• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    27 ABSTRACT A shock Watch device (10) comprises a first body portion (20), a second bodyportion (30) arranged movably relative to the first body portion, a springarrangement (40) arranged to urge the second body portion from a biasedposition (81) to a released position (82), an inductor arrangement (60) and aradio transmitter (70). A locking mechanism can be arranged in a lookingposition (83) between the first body portion and the second body portion inthe biased position and is adapted to be released When the shock Watch deviceis exposed for an external shock. The inductor arrangement has a permanentmagnet part (61) and a coil part (62), giving rise to an induced current Whentravelling relative each other. The radio transmitter is connected to the coilpart of the inductor arrangement and is arranged for transmitting a predeterrnined radio signal as a response to the induced current. (Pig. 2)
    公开号:SE1550809A1
    申请号:SE1550809
    申请日:2015-06-15
    公开日:2016-12-16
    发明作者:Brunnberg Anders；Wallinder Jonas；Stark Fredrik
    申请人:Valhall Trading Ab；
    IPC主号:
    专利说明:

    lO SHOCK WATCH EQUIPMENT T ECHNICAL FIELD The present document relates in general to warning systems, and in particular to shock watch devices, systems and methods.
    BACKGROUND When road maintenance work is to be performed, barrier markers arefrequently used to close off and redirect traffic from the areas in Which theWork takes place. The barrier markers can be of different kinds, ranging fromsimple plastic conesto steel or concrete partitioning units. The barriermarkers are also often provided with light devices to enhance the warning effect to the traffic, in particular during the night.
    The main purpose of the barrier markers is to be conspicuous. However, theactual physical obstruction provided by such barrier markers is in general notvery efficient. Light-weight barrier markers are easy to handle and distribute,however, they cannot Withstand impacts from travelling vehicles. Heavierbarriers provide a more reliable physical protection, but are instead difficultto arrange. Also quite heavy barriers cannot Withstand the impact of a fully loaded truck.
    In order to reduce the risk for injuries when vehicles accidentally or onpurpose break barriers in connection to road maintenance Work, differenttypes of warning systems are proposed. Most of these systems are based on asensing of a breaking of the barrier and the emission of a sound and /or lightalarm. The audible and/ or visible alarm is intended to Warn the road Workersin order to have a possibility to move into safe positions or at least reduce the risk for injuries. lO 2 In the published patent application FR 2 886 952 Al, a warning systemcomprising cones with a light, a Shock detector, a radio transmitter and apower supply system. The system further compríses badges intended to beworn by persons within the Working area. The badges are equipped with aradio receiver, a power supply and means for emitting a warning sound and/ orlight. The system also compríses a central unit, arranged to react on emitted radio signals from the cones and to emit signals for alarming the badges. ln the published patent US 7,230,546 Bl, a roadway incursion alert systemis dísclosed. Incursíon detector units on e.g. traffic cones are activated byautomatic activation sensors. Alerts are generated, powered by a powersource, in response to impacts detected by an incursion detector andtransmitted to one or more incursion receiver unit or personal unit, which annunciate the alert by audio, light or tactile outputs to warn personnel. ln the published patent application GB 2486075 A, a perimeter breach alarmsystem is disclosed. A lantern compríses a sensor unit arranged for detectinga collísion or impact is further arranged for generating a wireless alert signalin response to a detected impact. The sensor unit is powered from the same battery used by a light source of the lantern.
    A general problem with proposed solutions according to prior art is thehandling of the batteries or power sources connected to the sensors. Sensorequipment in which the battery is shared with other equipment, such as lightsources, reduces the flexibility to provide the sensors in a road working area.Sensor equipment with their own battery source is easier to position in aflexible manner, but the status of the battery has to be verified regularly toensure a proper operation. The sensors are moreover often placed in toughenvironments, where dirt and moisture may harm the battery performance and/ or life. lO SUMMARY A general object of the present technology is to provide devices and method forshook watch having improved operation reliability and that still enable flexible po sitioning.
    This object is achieved by devices and methods according to the attachedindependent patent claims. Preferred embodiments are defined in dependentolaims. In general words, in a first aspect, a shook watch device comprises afirst body portion, a second body portion, a spring arrangement, a lookingmechanism, an induotor arrangement and a radio transmitter. The secondbody portion is arranged movably relative to the first body portion. The springarrangement is arranged between the first body portion and the second bodyportion. The spring arrangement is arranged to urge the second body portionfrom a biased position relative to the first body portion to a released positionrelative to the first body portion. The looking mechanism is adapted to bemechanically arranged in a looking position between the first body portion andthe second body portion in the biased position. The looking mechanism isthereby preventing relative movements between the first body portion and thesecond body portion. The looking mechanism is adapted to be released fromthe looking position when the shook watch device is exposed for an externalshook, overooming forces aoting for maintaining the looking mechanism in thelooking position. The induotor arrangement has a permanent magnet part anda coil part. One of the permanent magnet part and the coil part is arranged inthe first body portion and the other of the permanent magnet part and the coilpart is arranged in the second body portion. The permanent magnet part andthe coil part are arranged to move relative to each other when he second bodyportion moves from the biased position relative to the first body portion to thereleased position relative to the first body portion. Thereby a change ofmagnetic flux through said coil is created, giving rise to an induoed current.The radio transmitter is connected to the coil part of the induotor arrangement. The radio transmitter is arranged for transmitting a lO 4 predetermined radio signal as a response to and powered by an induced current from the coil part.
    In a second aspect, a shock watch system compríses at least one shock watchdevice according to the first aspect and at least one alarm device. The alarmdevice in turn compríses a receiver arranged for reception of thepredetermined radio signal, and an alarm arrangement. The alarmarrangement is arranged for activating an alarm signal as a response of a received predetermined radio signal.
    In a third aspect, a Shock watch method compríses tightening of a springarrangement by placing a first body portion of a shock watch device in a biasedposition relative to a second body portion of the shock watch device. A lockingmechanism of the shock watch device is arranged in a locking positionbetween the first body portion and the second body portion in the biasedposition. This prevents relative movements between the first body portion andhe second body portion. The arranging of the locking mechanism is performedto allow a releasing from the locking position when the shock watch device isexposed for an external shock, overcoming forces acting for maintaining thelocking mechanism in the looking position. The second body portion is movedrelative to the first body portion from the biased position to a released positionurged by the tightened spring arrangement, when the looking mechanism isreleased from the locking position. A current is induced in a coil by apermanent magnet by the moving of the second body portion. A predeterminedradio signal is transmitting as a response to and powered by the induced current.
    One advantage with the presently presented technology is that highly reliableshock watch devices can flexibly be distributed in a work area. Otheradvantages becomes obvious when reading the detailed description of ernbodiments further below.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention, together With further objects and advantages thereof, may bestbe understood by making reference to the following description taken togetherWith the accompanying drawings, in Which: FIG. l is a schematic illustration of an embodiment of a shock Watchsystem; FIG. 2 is a cross-sectional view of an embodiment of a shock Watchdevices in a biased condition; FIG. 3 is a cross-sectional view of the embodiment of Fig. 2 in a releasedcondition; FIG. 4 is a cross-sectional view of another embodiment of a shock Watchdevice; FIG. 5 is a cross-sectional view of yet another embodiment of a shockwatch device; FIG. 6 is a schematic view of an embodiment of a design for improvingtilting of shock Watch devices; FIG. 7 is a cross-sectional view of yet another embodiment of a shockWatch device; FIG. 8 is a cross-sectional view of yet another embodiment of a shockWatch device; FIG. 9 is a Simplified exploded vievv of any of the embodiments of Figs 7or 8; FIG. 10 is a schematic illustration of an embodiment of a mounting of ashock Watch device; FIG. 1 l is a schematic block scheme of an example of an alarm deviceuseful in a shock Watch system; FIG. 12 is a floW diagram of steps of an embodiment of a shock Watchmethod; and i FIG. 13 is a schematíc illustration of an embodiment of Work flows for the use of a shock Watch device in practical use. l0 DETAILED DESCRIPTION Throughout the draWings, the same reference numbers are used for similar or corresponding elements.
    Fig. 1 illustrates schematically an embodiment of a shock watch system l.The illustration shows a site Where a number of persons 2 are present in anarea 3. There is a potential risk that heavy and relatively fast travelling objects4 may intrude into the area 3 and thereby expose the persons 2 for an injuryrisk. A typical example of such a site is, as discussed above, a roadmaintenance area, Where road workers are present in an area into Whichvehicles by mistake or by purpose is driven. Another typical example would bea railway area in Which maintenance Work is performed. Yet another exampleis a factory area, in Which different types of vehicles or machine parts maymove. Common for these sites is that persons may be injured by heavy objectsfor some reasons entering into an area in Which persons are present. Byhaving an alarm functionality, the persons 2 may be given an additional short time for avoiding being hit by the moving object 4.
    The shock Watch system l of the embodiment of Fig. l comprises at least oneshock Watch device 10, and preferably a plurality of shock Watch devices 10.The shock Watch devices 10, of Which some embodiments are discussed infurther detail below, are arranged for emitting a radio signal 5 as a responseto a detection of a shock or impact on the shock Watch device 10. The shockWatch system 1 of the embodiment of Fig. 1 further comprises at least onealarm device 90, and preferably a plurality of alarm devices 90. In a furtherpreferred embodiment, every person 4 within the area 3 has access to at leastone alarm devices 90. The alarm devices 90 are arranged for activating analarm signal perceivable by the persons as a response of a received radiosignal. The alarm signal can e.g. be an audio signal, a light signal, a tactilesignal etc. In particular embodiments, the shock Watch system 1 may also comprise one or more intermediate stations, arranged for assisting in transferring the signal emítted from the shock watch devices 10 to the alarm devices 90.
    The shock watch devices 10 are mounted at a distance 6 from the area 3 inthe direction from which any possible heavy object 4 may intrude. If a heavyobject 4 is heading towards the area 3, it Will then first reach the shock watchdevices 10 and the shock watch devices 10 will detect the impact from theheavy object 4 and emit a radio signal. The alarm devices 90 will receive theradio signals, directly or indirectly, and will activate the alarm signal. If theprocessing times in the shock watch devices 10 and the alarm devices 90 areshort, and the distance 6 is long enough, the persons 2 may have a fewmoments to be aware of the danger and maybe move away or at least prepare for the impact.
    A human being, that is unaware of a coming situation, needs typically 1-2seconds to perceive an alarm signal and to initiate any measures against e.g.treat coming closer. As an example, a vehicle running with a speed of 90 km/ hwill travel 50 m within 2 seconds. By for instance installing the shock watchdevices 10 at a distance 6 of 100 m before the area 3, the persons 2 will therebyapproximately have 2-3 seconds to act to avoid the vehicle. From this example, it is obvious that the shock watch system 1 has to be a fast Operating system.
    In Fig. 1 there is thus shown a shock watch system 1, comprising at least one shock watch device 10 and at least one alarm device 90.
    In prior art alarm systems, the shock sensors are generally based on electricenergy from a battery to produce an alert signal. However, as discussed above,the use of batteries have certain distinct disadvantages. One insight hastherefore been to instead utilíze mechanical energy stored in a springarrangement to instantly produce current, which can be utilized for providing an alert signal.
    Fig. 2 illustrates schematically a cross-sectional view of an embodiment of ashock Watch device 10. The shock Watch device 10 comprises a first bodyportion 20, a second body portion 30, a spring arrangement 40, a lockingmechanism 50, an inductor arrangement 60 and a radio transmitter 70. Thesecond body portion 30 is arranged movably relative to the first bodyportion20. In the present embodiment, the first body portion comprises acylinder 21, in Which the second body portion 30, in the present embodimentcomprising a piston 31, is provided. The piston 31 is possible to move alongthe central axis of the cylinder. In other Words, the second body portion 30comprises a piston 31 and the first body portion 20 comprises a cylinder 21, in which the piston 31 is linearly movable.
    In the ernbodiment of Fig. 2, the first body portion 20 further comprises a lid25, engaged by a threading 28 to an upper part of the cylinder 21. The lid 25defines by an inner surface 27 a through hole 26 directed along the main axisof the first body portion 20. The second body portion 30 further comprises ashaft 34 connecting the piston 31 and a knob 35. The shaft 34 is arrangedthrough the though hole 26. By pulling the knob 35, the piston 31 can be moved Within the cylinder 21 in order to e.g. bías the coil spring 41.
    In preferred embodiments, at least a part of the second body portion 30 is, atleast in one plane, encircled by the first body portion 20. The shock watchdevice 10 may thereby be designed to maintain most of the moving andsensitive parts at least partly protected by the first body portion 20. In theernbodiment of Fig. 1, the piston 31 and the coil spring 41 are comprised in acompartment that Will be essentially free from dirt and moisture. Failure risk due to obstructing dirt or corrosion may thereby be reduced.
    The spring arrangement 40, in the present embodiment a coil spring 41, isarranged between the first body portion 20 and the second body portion 30.The spring arrangement 40 is arranged to urge the second body portion 30from a biased position 81 relative to the first body portion 20 to a released position 82 relative to the first body portion 20. In other Words, if the second 9 body portion 30 is free to move and is positioned in the biased position 81, thespring arrangement 40 drives the second portion 30 towards the released position 82.
    In preferred embodiment, a guídance surface 86 of the second body portion30 is, during a movement between the biased position 81 and the releasedposition 82, arranged for being guided by a guiding surface 85 of the first bodyportion 20. In the present embodiment, the guídance surface 86 is to a partcomposed by the radially outer surface of the piston 31. The guiding surface85 is to a part composed by the inner surface of the cylinder Wall 22.Furthermore, a part of the guídance surface 86 is also composed by a surface36 of the shaft 34, Which is guided by a part of the guiding surface 85 beingcomposed by the inner surface 27 of the hole 26. By having such guídanceaction between the first body portion 20 and the second body portion 30, awell-defined motion is easily achieved. The first body portion 20 and thesecond body portion 30 will thereby less likely be stuck during the relative motion.
    In the present embodiment, the second body portion 30 is arranged to movein a linear movement between the biased position 81 and the released position82. When the piston 31 is placed at the biased position 81, the coil spring 41is compressed. The biased coils spring 41 thereby stores an amount ofmechanical energy. lf the piston 31 is allowed to move, the coil spring 41pushes the piston 31 towards the released position 82, utilizing the stored mechanical energy of the coil spring 41 to move the piston 31.
    The relative motion of the first body portion 20 and the second body port 30can be utilized for creating electrical energy. To this end, the inductorarrangement 60 has a permanent magnet part 61 and a coil part 62. One ofthe permanent magnet 61 part and the coil part 62, in the present embodimentthe coil part 62, is arranged in the first body portion 20 and the other of thepermanent magnet part and the coil part, in the present embodiment the permanent magnet part 61, is arranged in the second body portion. The permanent magnet part 61 and the coil part 62 are arranged to move relativeto each other When the second body portion 30 moves from the biased position81 relative to the first body portion 20 to the released position 82 relative tothe first body portion 20. This movement thereby creates a change of magneticflux through the coil part 62, Which gives rise to an induced current in the coilpart 62. In the present embodiment, the permanent magnet part 61 ismounted in the side of the piston 31. The coil part 62 is integrated in the Wall22 of the cylinder 21. When the coil spring 41 urges the piston 31 towards thereleased position 82, the permanent magnet part 61 moves Within the coil part 62, Which results in an induced current.
    Due to the mechanical energy that originally was stored in the coil spring, themovement of the permanent magnet part 61 can be performed very rapidly,thereby causing a large induced current, however, during a relatively limitedtime period. The speed of the process is of benefit, since the available timebefore an alert signal has to be emitted is limited. As a non-limiting example,a coil spring delivering a force of 50 N during a movement of 5 cm releases anenergy of 2.5 J. If the inductor arrangement 60 can be designed to give anefficiency of 40%, a total electrical energy of 1 J may be available for creatinga radio signal as an alert signal. The alert signal is then typically used foractivation of an alarm signal for persons being in the vicinity of any alarm devices 90.
    The radio transmitter 70 of the shock Watch device 10 isltherefore connectedto the coil part 62 of the inductor arrangement 60. The radio transmitter 70is arranged for transmitting a predetermined radio signal, as the alert signal,as a response to an induced current from the coil part 62. The radio signalfunctioning as the alert signal has predetermined properties in terms of e.g.frequencies, timing and/ or duration. These predetermined properties are usedby the alarm devices to distinguish the alert signal from other types of receivedelectromagnetic signals. The predetermined radio signals in differentembodiments be formed as predetermined pulse trains, a combination of a number of predetermined single frequency tones, or any other predetermined 11 combination of time and frequency properties for distinguishing thepredetermined radio signals from other external sources to prohibit accidental re semblance.
    The radio transmitter 70 may in different embodiments be based onelectronics hardware, processors and software or any combination thereof.The details of the radio transmitter 70 configuration is of minor importancefor the general idea in this disclosure. Many different suitable circuits orprogram are available, as such, within the prior art, to produce thepredetermined radio signal within a suitably short time. Any person skilled in the art can easily find suitable solutions concerning the radio transmitter 70.
    As a non-limíting example, having 1 J of electric energy available, circuitryusing 20 mA at a voltage of 5 V will be able to operate for 5 s. This transmittíngtime would in a typical case be sufficient for causing an alarm signal at thealarm devices 90. Since the equipment is intended to warn for fast movingvehicles, the vehicle is supposed to travel over relatively long distances during5 s, and any alert signals after such a long time will typically be unnecessary, since the vehicle very well may have reached the working area already.
    The remaining part to discuss is the locking mechanism 50. In order to releasethe predetermined radio signal at the intended occasion, i.e. when the shockwatch device 10 is exposed for an impact, there has to be a mechanism thatin a normal case prohibits the first body portion 20 to move, but when animpact occurs will permit a relative movement between the first and secondbody portions, 20, 30. To this end, the locking mechanism 50 is adapted to bemechanically arranged in a locking position 83 between the first body portion209 and the second body portion 30 in the biased position 81. The lockingmechanism 50 thereby prevents relative movements between the first bodyportion 20 and the second body portion 30. In other words, the lockingmechanism 50 constitutes a mechanical obstacle making the movementimpossible. The locking mechanism 50 is further adapted to be released from the locking position 83 when the shock watch device 10 is exposed for an 12 external shook that is large enough to overcome forces acting for maintaining the looking mechanism 50 in the looking position 83.
    In the present embodiment, the first body portion 20 comprises a pin 23protruding axially within the cylinder 21 and the looking mechanism 50comprises a rod 51. The length of the rod 51 oorresponds to a distance D, inan axial direction A, between a tip 24 of the pin 23 and the second body portion30, in this embodiment the piston 31, when the second body portion 30 ispositioned in the biased position 81. Thereby, when the rod 51 is placedbetween the tip 24 of the pin 23 and the second body portion 30 when thesecond body portion 30 is positioned in the biased position 81, the rod 51prevents the relative movements between the first body portion 20 and thesecond body portion 30. In the present embodiment, the coil spring 41 givesa bias force onto the rod 51, and the rod 51 is thereby pushed against the tip24 of the pin 23. Due to friotional forces, the rod 51 is prevented from sliding in the sideward direction when the shook watch device 10 is kept at rest.
    In the present embodiment, the piston 31 is provided with protrusions 32 thatfits around a spherically shaped end 52 of the rod 51. The end 52 of the rod51 is thereby contained within a hollow space defined by the protrusions 32.Small projections 33 directed radially inwards from the protrusions 32 createsa constriction holding the end 52 of the rod 51 in place, but allows the rod 51to tilt.
    Fig. 3 illustrate the shook Watch device 10 of Fig. 2, when the coil spring 81has been allowed to move the second body portion 30 to the released position82. The looking mechanism 50 does no longer prohibit any relative motionbetween the second body portion 30 and the first body portion 20. In thisparticular embodiment, this is achieve by tilting away the rod 51 from the tip24 of the pin 23. During the movement from the situation depicted in Fig. 2and the situation depicted in Fig. 3, the permanent magnet part 61 has movedrelative to the coil part 62 of the inductor arrangement 60, and a current has been induced. The removal of the mechanical connection between the rod 51 lO 13 and the tip 24 of the pin 23, can during operation be caused by a sudden forceapplied on the shock watch device 10. This can e.g. be caused by a vehiclecolliding with the shock watch device 10. The inertia of the mass of the rod 51then creates force which is larger than the frictional forces between the rod 51and the tip 24 of the pin 23 and the rod slides off the tip 24. The coil spring41 rapidly pushes the piston 31 to the released position 82.
    If the shock watch device 10 is to be released without giving rise to any alertsignal, e.g. when a work area is to be closed down, the shaft 34 and/ or knob35 can be held in a fixed relation to the cylinder 21 when the shock watchdevice 10 is stroked, releasing the rod 51. Thereafter, the piston 31 can beallowed to slowly be moved into the released position 81. The so inducedcurrent is then associated with a power that is too low for causing any transmission of any radio signal.
    The tightening or biasing of the shock watch device 10 is performed in toopposite manner. The shaft 34 and/ or knob 35 is first pulled out from thereleased position 82 to the biased position 81, and a small distance beyond.The shock watch device 10 is then kept with the main axis or the shaft 34 ina vertical direction. The rod 51, which by its end 52 is maintained within theprotrusions 32, is by the gravitational forces directed in the vertical direction,i.e. pointing at the tip 24 of the pin 23. If the shaft 34 and/ or knob 35 is gentlyallowed to move towards the released position 82, the rod 51 will eventuallycome into contact with the tip 24 of the pin 23, and the frictional forces therebetween will then keep it in place, as is shown in Fig. 2. The shock watch device 10 is now ready to be used.
    In many situations, it is beneficial if one may be able to check whether or nota shock watch device 10 is biased. With the embodiment of Figs. 2 and 3, thisis easily concluded by observing the relative position of the knob 35 and lid25. In order to facilitate such an inspection from a distance, in a preferredembodiment, a shock watch device 10 comprises adaptation indícator arrangement 89. The adaptation indícator arrangement 89 is configured to 14 present a sign 88, viewable from an outside of the shock watch device 10,when the second body portion 30 is positioned in the biased position 81 andthe adaptation indicator arrangement 89 is configured to hide that sign 88,then being non-viewable from the outside of the shock watch device 10, whenthe second body portion 30 is positioned in the released position 82. In theembodiment of Figs 2 and 3, the sign 88 of the adaptation indicatorarrangement 89 is simply a coloured surface of the shaft 34. When the piston31 is in the biased position 81, the shaft 34 is seen outside the lid 25 and thecoloured' surface of the shaft 34 can be easily detected also from a distance.When the piston 31 is in the released position 82, the shaft is hidden insidethe cylinder 21.
    As anyone skilled in the art realizes, the different arrangements of the shockWatch device 10 can be implemented in numerous Ways. In the presentdescription, just a handful of examples are presented, but the person skilled in the art can easily configure other detailed configurations.
    Another embodiment of a shock Watch device 10 based in a linear relativemotion is illustrated in Fig. 4. Instead of a knob on the shaft 34, the secondbody portion 30 here comprises an envelope part 38. The inner surfaces of theenvelope part 38 is provided in the vicinity of the outer surfaces of the cylinder21. Another pair of guidance surface/guiding surface 86/85 is achieved,Which increases the stability of the shock Watch device 10. In thisembodiment, the permanent magnet part 61 is provided integrated in the envelope part and moves therefore relative the coil part 62 on the outside.
    Another difference in this embodiment is that the rod 51 is maintained incontact With the piston 31 by means of a magnet 37 attracting a magneticupper end of the rod 51. The rod is as before allowed to tilt and the biasing procedure will be essentially the same as before.
    In the embodiment of Fig 4, the sign 88 of the adaptation indicator arrangement 89 is a coloured or patterned surface on the outside of the cylinder 21. This coloured or patterned surface is covered by the envelope part38 when the second body part 30 is positioned in the released position 82while it is uncovered when the second body part 30 is positioned in the biased position 8 1.
    Fig. 5 illustrates another embodiment of a shock watch device 10. In thisembodiment, the permanent magnet part 61 is provided integrated in the firstbody portion 20, in this embodiment the cylinder 21. Instead, the coil part 62is integrated in the second body portion 30, in this embodiment the piston 31.In order to facilitate the electrical connections, the radio transmitter 70 is inthis embodiment provided in the second body portion 30, in this embodiment the piston 31.
    When the shock watch device 10 is exposed for a serious impact action, thelocking mechanism 50 of the shock watch device 10 should be released.However, small influences such as ordinary vibrations or swinging in thesupporting means should not cause any action. The level of forces necessaryfor releasing the shock watch device 10 has to be determined depending onthe actual implementation. Simple adjustments in e.g. the surface structuresof the rod 51 and the tip 24 can be made in order to change the frictioncondition. The width of the tip 24 and the rod 51 also influences the forcenecessary for releasing the contact there between. With a narrower contactarea, a shorter movement of the rod 51 caused by the inertia action will actfor breaking the locking function of the rod 51. The spring force of the springarrangement 40 is also of importance for how easily the locking mechanism50 can be removed. A smaller spring force will give rise to smaller frictíonalforces, which in turn facilitates the release. I-Iowever, the spring force has tobe kept high enough to provide the suitable induced current. It is, however,easy for any person skilled in the art to make small adjustments in order tofind the appropriate level of forces needed to release the locking mechanism 50. 16 In the embodiments presented above, the forces that are of main importancefor causing a release of the contact between the locking mechanism 50 andthe first body portion are the components perpendicular to the rod 51.Therefore, upon mounting the shock watch device 10 should preferably bepositioned in a direction so that the most probable impact direction isperpendicular or at least transverse to the axis of the cylinder 21. If, in atheoretical case, all impact forces are applied parallel to the axis, no forces arein theory present to release the locking mechanism 50. However, in practice,if the shock watch device 10 is not mounted to a support too rigidly, any highforce stroke on the shock watch device 10 will cause the entire shock watchdevice 10 to fall over or at least change its position very rapidly. This will thus also give rise to transvers forces on the locking mechanism.
    Fig. 6 illustrates schematically an embodiment of a shock watch device 10,which has been adapted for performing such tilting actions more easily. Theupper part of the shock watch device 10 has a surface that is inclined. Thismeans that a force F applied onto the shock Watch device 10 even in the exactdirection of the main axis of shock watch device 10 anyway will give rise to asideward directed force causing the shock watch device 10 to fall over.Furthermore, by making the supporting bottom surface narrower, such fall-over will be even more facilitated. Various other mechanical designs can alsobe used to assure that forces are applied to the locking mechanism in suitable directions, independent of in which direction the original bump is directed.
    Fig. 7 illustrates schematically another embodiment of a shock watch device10 in a cross-sectional view. This embodiment is based on a rotational relatívemovement between the first body portion 20 and the second body portion 30.In other Words, the second body portion 30 is arranged to move in a rotationalmovement between a biased position and a released position. In the presentembodiment, the first body portion 20 comprises a support 121 having a baseplate 128 and a border 129. The second body portion 30 comprises a disc 131,which fits within the border 129 of the support 121. The first body portion 20 comprises a support surface 123, on Which the disc 131 is rotationally 17 movable. The disc 131 rests with an interaction surface 139 on the supportsurface 121. A screw 122 is positioned through a hole 138 in the disc 131 andfastened by a thread into the base plate 128. A head 124 of the screw 122prohibits the disc 131 to be removed from the base plate 128. However, thescrew 122 allows the disc 131 to be rotated around the screw relative to the base plate 128.
    The spring arrangement 40 comprises in this embodiment a coil spring 149mounted between a support attachment 141 and a disc attachment 142. Thespring and the relative positions are configured such that when the spring isreleased, the disc 131 is positioned in a released position relative to thesupport 121. When the disc 131 is rotated relative to the support 121, e.g. byusing the knob 137, the coil spring 149 in tensioned and strives to rotate the disc 131 back to the released position.
    In a preferred embodiment, a guidance surface 186 of the second body portion30 is, during a movement between the biased position and the releasedposition, arranged for being guided by a guiding surface 185 of the first bodyportion 20. In the present embodiment, the guidance surface 186 is to a partcomposed by the radially outer surface 135 of the disc 131. The guidingsurface 185 is to a part composed by the inner surface of the border 129.Furthermore, a part of the guidance surface 186 is also composed by thesurface of the hole 138, which is guided by a part of the guiding surface 185being composed by the outer surface of the screw 122. Furthermore, theinteraction surface 139 and the support surface 123 also constitute a pair ofa guidance surface 186 and a guiding surface 185. By having such guidanceaction between the first body portion 20 and the second body portion 30, a well-defined motion is easily achieved.
    In the embodiment of Fig. 7, the locking mechanism 50 comprises a sphere151. The support surface 123 of the first body portion 20 comprises a recess125 enabling reception of a part of the sphere 151. The second body portion 30 has a hole 133 in the interaction surface 139 facing the support surface 18 123. The hole 133 has a diameter that is slightly larger than the sphere 151.The hole 133 is positioned in front on the recess 125 When the second bodyportion 30 is positioned in a bíased position. The sphere 151 may then beplaced in the recess 125, Whereby a part of the sphere 151 still penetrates outin the hole 133. The surface of the sphere 151 interacts mechanically With anedge 132 of the hole 133 and an edge of the recess 125 and the sphere therebyobstructs any relative motion between the first body portion 20 and the secondbody portion 30. In other Words, the sphere 151, When placed in the recess125 and the hole 133 When the second body portion 30 is positioned in thebíased position prevents the relative movements between the first body portion20 and the second body portion 30. If more than half the sphere 151 iscontained in the recess 125, the force applied to the sphere 151 from thebíased disc 131 presses the sphere slightly downwards. If half the sphere 151or less than half the sphere 151 is contained in the recess 125, frictional forcesmay under some conditions still keep the sphere 151 in place, prohibiting therelative motion. In either case, if the shock watch device 10 is exposed for asufficiently large strike, the sphere 151 Will be knocked out from the lookingposition in the recess 125 into the hole 133 and the thereby release the disc131 from the support 121, and the spring arrangement 40 Will turn the discback to a released positon. A lid 134 is preferably provided for closing the hole133 at the upper part of the disc 131 in order to maintain the sphere in thehole 133. In a particular embodiment, the lid 134 may be manufactured by atransparent material, Which facilitates the operation of biasing the spring arrangement and check that the sphere 151 falls into the recess 125.
    In the embodiment of Fig. 7, the inductor arrangement 60 comprises apermanent magnet part 61 integrated into the side of the disc 131, and a coilpart 62 integrated in the border 129. The relative rotational motion of the disc131 and the support 121 causes an inducted current in the coil part 62, inturn causing the radio transmitter 70 to produce the predetermined radio signal. 19 In a preferred embodiment, the shock watch device comprises an adaptationindicator arrangement 89. The adaptation indicator arrangement 89 isconfigured to present a sign 88, viewable from an outside of the shock Watchdevice 10, when the second body portion 30 is positioned in the biased position81 and the adaptation indicator arrangement 89 is configured to hide thatsign 88, then being non-viewable from the outside of the shock watch device10, When the second body portion 30 is positioned in the released position 82.ln the present embodiment, the sign 88 is provided on a part of the outersurface 135 of the disc 131. By manufacturing a sector of the border 129 in atransparent material 126, the sign 88 can be viewed through the transparentmaterial. The sign 88 is placed relative to the transparent material 126 in sucha way that the sign 88 is visible through the transparent material When thesecond body portion30 is placed in the biased position, but that the sign 88 ishidden behind a non-transparent part of the border 129 when the second body portion30 is placed in the released position.
    Fig. 8 illustrates schematically another embodiment of a shock watch device10. In this embodiment, the inductor arrangement 60 comprises a permanentmagnet part 61 integrated into the base plate 128, and a coil part 62 integratedclose to the interaction surface 139 of the disc 131. The radio transmitter 70 is provided within the disc 131.
    In this embodiment, the looking arrangement 50 further comprises anadjustment screw 152. The base plate 128 is provided With a threaded hole136 between a lower surface of the base plate and the bottom of the recess125. The adjustment screw 152 is inserted With thread interaction in the hole136 and the tip of the adjustment screw 152 may be adjusted to protrude intothe recess 125. In that Way, the efficient depth of the recess 125 can beadapted from the outside. A change in the efficient depth of the recess 125 willchange the level of forces that are necessary to cause a removal of the sphere151 from the recess. The adjustment screw 152 can thereby be used to adapteach shock watch device 10 to the actual conditions in Which it is going to operate.
    Fig. 9 is a schematic elevation illustration of the mounting principles of the embodiments of Figs. 7 and 8.
    Fig. 10 illustrates a possible mounting of the shock watch device 10. A clip 99attached to the base plate 128 enables to hang the shock watch device 10 onany type of barrier equipment. Furthermore, the elasticity of the clip 99 alsoprovides tilting of the shock watch device 10 when exposed for an external force, which enables detection of external forces from any direction.
    Fig. 11 illustrates an embodiment of an alarm device 90,,which is possible touse together with the shock watch devices 10 described above. The alarmdevice 90 comprises a receiver 96 arranged for reception of the predeterminedradio signal. The alarm device 90 further comprises an alarm arrangement 91,which is arranged for activating an alarm signal as a response of a receivedsaid predetermined radio signal. The detailed configuration of the alarmarrangement 91 can be constructed in various ways. One example of aconfiguration is described here below, but the person skilled in the art realizesthat there are numerous of alternatives of suitable alarm devices available, assuch, within prior art, as long as the alarm arrangement 91 is arranged foractivating an alarm signal as a response of a received said predetermined radio signal.
    In the present embodiment, the alarm arrangement 91 comprises a battery 9 1supporting the alarm arrangement 91 and the receiver 96 with necessarypower. The battery can be complemented by an external power connection 95,for charging the battery and/ or for saving the battery life when there is accessto external power supplies. The alarm arrangement 91 further compriseselectronics 92, configured for detecting any occurrence of a received saidpredetermined radio signal and for initiating the emission of an alarm signal.The alarm arrangement 91 thereby has a signal control unit 93 configured foremitting an alarm signal as a response to the initíation of the electronics 92.
    If the alarm signal is to be emitted by another device, e.g. a loudspeaker, 21 communication to such a device can be performed e.g. using Bluetooth. Tothis end, the alarm arrangement 91 comprises a Bluetooth communication unit 94.
    When a said predetermined radio signal reaches the alarm device 90, anantenna of the receiver 96 receives the signal and the signal is forwarded tothe electronics 92 of the alarm arrangement 91. The electronics 92 recognisesthe predetermined radio signal and initiates an alarm signal emission byalerting the signal control unit 93. The signal control unit 93 either by itselfemits an alarm signal or sends an order of suchan emission to an external unit.
    Fig. 12 illustrates a flow diagram of steps of an embodiment of a shock Watchmethod. The method starts in step 200. In step 210, a spring arrangement istightened by placing a first body portion of a shock Watch device in a biasedposition relative to a second body portion of the shock Watch device. In step220 a locking mechanism of the shock Watch device is arranged in a lockingposition between the first body portion and the second body portion in thebiased position. Such a positioning prevents relative movements between thefirst body portion and he second body portion. The arranging of the lockingmechanism is performed to allow a releasing from the locking position Whenthe shock Watch device is exposed for an external shock that overcomes forcesacting for maintaining the locking mechanism in the locking position. ln step230, the second body portion is moved relative to the first body portion fromthe biased position to a released position urged by the tightened springarrangement, When the locking mechanism is released from the lockingposition. In step 240 a current is induced in a coil by a permanent magnet bythe moving of the second body portion. Instep 250, a predetermined radiosignal is transmitted as a response to the induced current. The procedure ends in step 299.
    Fig. 13 illustrates possible Work flows for the use of a shock Watch device in practical use. ln state 301, the shock Watch device is stored. During the 22 storage, the shock watch device is preferably kept in a released condition, í.e.the first and second body portions are positioned in the released positionrelative each other. When having transported the shock watch devices to thearea in which they are going to be used, the shock watch devices are biased302, í.e. the first and second body portions are moved into the biased positionrelative each other. Typically, the shock watch device is then, in a biasedcondition 303, placed in a position where a possible impact of e.g. a vehiclemay occur. If an impact of an external body hits 304 the shock watch device,an alarm signal is caused to emitted 305. The shock watch device then has returned to a released condition 306.
    If the shock watch device has not been released by any external impact, therelease can be trigged manually 307. Preferably, this trigging is performed ina controlled manner 308 and slow enough for not causing any alarm, í.e. ade-biasing. The mechanics is then checked to be Operating and the shockWatch device then has returned to a released condition 306. The manuallytrigging 307 of the shock watch device can also be performed as a simulationof an external impact, which then can be used for testing 309 the entire shockWatch system. The shock watch device then has returned to a released condition 306.
    The shock watch devices can from the released condition 306 be stored until they are going to be used the next time.
    The embodiments described above are to be understood as a few illustrativeexamples of the present invention. It will be understood by those skilled in theart that various modifications, combinations and changes may be made to theembodiments without departing from the scope of the present invention. Inparticular, different part solutions in the different embodiments can becombined in other configurations, where technically possible. The scope of the present invention is, however, defined by the appended claims.
    权利要求:
    Claims (12)
    [1] 1. A shock Watch device (10), comprising - a first body portion (20); - a second body portion (30) arranged movably relative to said first bodyportion (20); - a spring arrangement (40) arranged between said first body portion(20) and said second body portion (30); said spring arrangement (40) being arranged to urge said second bodyportion (30) from a bíased position (81) relative to said first body portion (20)to a released position (82) relative to said first body portion (20); - a looking mechanism (50), adapted to be meohanically arranged in alooking position (83) between said first body portion (20) and said second bodyportion (30) in said bíased position (81), preventing relative movementsbetween said first body portion (20) and said second body portion (30); said looking mechanism (50) being adapted to be released from saidlooking position (83) when said shock Watch device (10) being exposed for anexternal shock, overooming forces aoting for maintaining said lookingmechanism (50) in said looking position (83); - an induotor arrangement (60), having a permanent magnet part (61)and a coil part (62); one of said permanent magnet part (61) and said coil part (62) beingarranged in said first body portion (20) and the other of said permanentmagnet part (61) and said coil part (62) being arranged in said second bodyportion (30); said permanent magnet part (61) and said coil part (62) being arrangedto move relative to each other when said second body portion (30) moves fromsaid bíased position (81) relative to said first body portion (20) to said releasedposition (82) relative to said first body portion (20), thereby creating a changeof magnetic flux through said coil, giving rise to an induced current; and - a radio transmitter (70), connected to said coil part (62) of said induotor arrangement (60); 24 said radio transmitter (70) being arranged for transmitting apredetermined radio signal as a response to and powered by an induced current from said coil part (62).
    [2] 2. The shock watch device according to claim 1, characterised in that atleast a part of said second body portion (30) is, at least in one plane, encircled by said first body portion (20).
    [3] 3. The shock watch device according to claim 1 or 2, characterised inthat a guidance surface (86; 186) of said second body portion (30) is, duringa movement between said biased position and said released position, arranged for being guided by a guiding surface (85; 185) of said first body portion (20).
    [4] 4. The shock watch device according to any of the claims 1 to 3,characterised in that said second body portion (30) is arranged to move in alinear movement between said biased position (81) and said released position(82).
    [5] 5. The shock watch device according to claim 4, characterised in thatsaid second body portion (30) comprises a piston (31) and said first bodyportion (20) comprises a cylinder (21), in which said piston (31) is linearly movable.
    [6] 6. The shock watch device according to claim 5, characterised in thatsaid first body portion (20) comprises a pin (23) protruding aXíally Within saidcylinder (21) and said locking mechanism (50) comprises a rod (51), whereina length of said rod (51) corresponds to a distance (D), in an axial direction(A), between a tip (24) of said pin (23) and said second body portion (30) whensaid second body portion (30) is positioned in said biased position (81),whereby said rod (51) when placed between said tip (24) of said pin (23) andsaid second body portion (30) when said second body portion (30) is positionedin said biased position (81) prevents said relative movements between said first body portion (20) and said second body portion (30).p
    [7] 7. The shock Watch device according to any of the clairns 1 to 3,characterised in that said second body portion (30) is arranged to move in arotational movement between said biased position (81) and said released position (82).
    [8] 8. The shock Watch device according to claim 7, characterised in thatsaid second body portion (30) comprises a disc (131) and said first bodyportion (20) comprises a support surface (123), on which said disc (131) is rotationally movable.
    [9] 9. The shock watch device according to claim 8, characterised in that said looking mechanism (50) comprises a sphere (151) ; said support surface (123) comprises a recess (125) enabling receptionof a part of said sphere (l51); and said second body portion (30) having a hole ( 133) in an interactionsurface (139) facing said support surface (123), said hole (133) having adiameter larger than said sphere (151) ; Wherein said hole (133) is positioned in front on said recess (125) Whensaid second body portion (30) is positioned in said biased position (81); Whereby said sphere (151) When placed in said recess (125) and hole(133) When said second body portion (30) is positioned in said biased position(81) prevents said relative movements between said first body portion (20) and said second body portion (30).
    [10] 10. The shock Watch device according to any of the claims 1 to 9,characterised by an adaptation indicator arrangement (89), configured topresent a sign (88), viewable from an outside of said shock Watch device (10),When said second body portion (30) is positioned in said biased position (81)and configured to hide said sign (88), being non-viewable from said outside ofsaid shock Watch device (10), When said second body portion (30) is positioned in said released position (82). 26
    [11] 11. A shock watch system (1), comprising: at least one shock watch device (10) according to any of the claims 1to 10; and at least one alarm device (90); said alarm device (90) in turn comprising a receiver (96) arranged forreception of said predetermined radio signal, and alarm arrangement (91); said alarm arrangement (91) being arranged for activating an alarm signal as a response of a received said predetermined radio signal.
    [12] 12. A shock watch method, comprising the steps of: - tightening (210) a spring arrangement by placing a first body portionof a shock watch device in a biased position relative to a second body portionof said shock watch device; - arranging (220) a locking mechanism of said shock watch device in alocking position between said first body portion and said second body portionin said biased position, preventing relative movements between said first bodyportion and said second body portion; said arranging of said locking mechanism being performed to allow areleasing from said locking position when said shock watch device beingexposed for an external shock, overcoming forces acting for maintaining saidlocking mechanism in said locking position; - moving (230) said second body portion, relative to said first bodyportion from said biased position to a released position urged by said tightenedspring arrangement, when said locking mechanism being released from saidlocking position; - inducing (240) a current in a coil by a permanent magnet by saidmoving of said second body portion; and - transmitting (250) a predetermined radio signal as a response to and powered by said induced current.
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    同族专利:
    公开号 | 公开日
    SE538844C2|2016-12-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2021066684A1|2019-09-30|2021-04-08|Saab Ab |A shock event recording unit, a shock detection system, a mobile application for processing of data relating to a shock event and a method for monitoring if an apparatus has been exposed to a shock|
    法律状态:
    2019-01-29| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1550809A|SE538844C2|2015-06-15|2015-06-15|A shock watch device, a shock watch system and a shock watchmethod|SE1550809A| SE538844C2|2015-06-15|2015-06-15|A shock watch device, a shock watch system and a shock watchmethod|
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