• 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:
    Traction force sensor for recording and monitoring physical exercise. It comprises at least one strain gauge (3) in a tension piece (1) comprising a central rectilinear segment (11) and two angled folds (10), significantly thicker than the central rectilinear segment. The strain gauge (3) is arranged in said central rectilinear segment, all in such a way that a force detracting at the fixing ends (12) of the tensioning piece (1) is transformed into a "U" (4) deformation in the central rectilinear segment. It also comprises a processor module (5) connected to the strain gauge (3), adapted to detect and process in data the elastic deformations produced in the central rectilinear segment by the longitudinal efforts generated by the traction of the fixing ends (12) of the tensioning piece. It allows the realization of a wireless sensor, portable and low cost. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2665309A1
    申请号:ES201631367
    申请日:2016-10-25
    公开日:2018-04-25
    发明作者:Ramon Bragos Bardia；Miguel Angel GONZALEZ GARCIA；Juan Jose Ramos Castro；Sergio Rodriguez Jimenez；Gerard Moras Feliu；Montserrat SUBIRANA CLÈRIC
    申请人:Estel Sl；
    IPC主号:
    专利说明:

    Tensile force sensor for recording and monitoring physical exercise OBJECT OF THE INVENTION
    The invention falls within the sector of physical activity and sports training, both in the field of health and high performance.
    The present invention relates to a tensile force sensor for recording and monitoring physical exercise, equipped with an extensometric gauge, of sufficient accuracy, minimum weight and reduced cost, for monitoring and analysis of physical exercise.
    The sensor of the present invention also finds application in other uses, such as for example, measurement of deformations in resistant structures, item weighing, material dosing, etc. STATE OF THE TECHNIQUE
    There are several solutions for the measurement of mechanical stress although all are based on the transduction of the force to a deformation that, later, will be estimated by resistive, capacitive, inductive or piezoelectric sensors.
    In the sector of physical activity and sport, and in sports training, there are various types of force transducers. Some devices are integrated in large fixed machines, and therefore not portable, to monitor the forces that are applied in the specific movements for which the machine has been designed.
    There are also portable sensors for the assessment of the force exerted by the human body or parts thereof. For example, patent EP0083568B1 describes a classic manual unidirectional compression force sensor, based on strain gauges.
    Similarly, US5090421 discloses an apparatus for use in muscle titration tests comprising a force transducer, based on strain gauges, to provide accurate deflection readings, even in different directions of force application. The device is connected by means of a cable to an external device, a computer, which collects and presents the force data obtained.
    The document US4307608A describes an apparatus that allows to digitally visualize the value of the muscular force exerted in compression or traction, and which consists of a console with an electronic circuit that receives the output signal of an independent load cell, connected by cable to the console, which is capable of transforming the elastic deformations of a rigid piece into electrical changes from the use of strain gauges.
    Patent application document WO2014125424A1 discloses a system for suspension training that can also include a sensor for recording the force (supposedly tensile) generated during the suspension exercises of the body or parts thereof, and that interacts with the user or coach through graphic or audio interface. In addition, the force registration sensor may include an accelerometer to determine movements or vibrations, or other types of additional external sensors, such as ECG, EMG, heart rate meters, etc. The sensors can interact with computers, mobile devices
    or tablets
    The application US20140148317A1 describes a system for muscular exercise comprising a clip for fixing elastic bands to a fixed point, and a sleeve or sleeves for fixing to cylindrical body parts such as a leg or an arm. The sleeve has at least one fixing device for anchoring to the elastic bands. The shape of a part of the clip allows spiral or helical winding of the elastic band. The clip may include a tensile load measuring system, for example an strain gauge, to measure the peak or average force generated in the elastic band.
    Patent application GB2528234A, which is considered as the “closest prior art” describes a sensor device consisting of two housings, right housing and left housing, each containing a force sensor based on a load cell, which allows measure separately the force exerted on the right and left side. Both housings have anchor points for fixing to external resistance systems such as rubber, pulleys, etc. Both housings are fixed to each other by a pivoting system or hinge that allows them to rotate and align with the direction of the tensile force to which the system is subjected. A final fixing point facilitates the fixation of the device to any fixed point. Logs provided by load cells can be sent wirelessly to a remote device, such as a computer or smartphone. A software associated with the device allows the analysis of the records, as well as assessing the activity performed by the user, and suggest various exercises to improve the fitness.
    As can be seen from the description of the closest state of the art, the main drawback, of a general nature, is to build a sensor system of reduced cost and minimum weight (<0.175 kg) but with sufficient accuracy (resolution <0.3 kg) and sufficient nominal load capacity (up to 250-300 kg) to wirelessly monitor the levels of force exerted during actions and exercises typical of strength training. In addition, GB2528234A describes a sensor that requires two strain gauges, which has the disadvantage of making the device more expensive and giving complexity to its management.
    The use of commercial load cells is discarded because it has a cost that is too high to meet the requirements of the application, and does not adapt to the functional needs of minimum weight and small size.
    Another more concrete drawback is to design a tensioning piece, of suitable shape, material, and dimensions so that, at a low manufacturing cost, it meets the requirements of measurement accuracy, minimum weight and sufficient functionality. EXPLANATION OF THE INVENTION
    The purpose of the present invention is to solve the above problems and disadvantages. For this purpose, the object of the present invention, according to claim 1, is a tensile force sensor for recording and monitoring physical exercise, of the type described at the beginning, which in essence is characterized in that it comprises a tensioning piece (which carries out the primary force-deformation transduction), made of a hard material with a certain elastic constant, and comprising a central rectilinear segment and two angled folds, significantly thicker than the central rectilinear segment, being a strain gauge arranged in said central rectilinear segment. A tensile force at the fixing ends of the tensioning piece is transformed into a U-deformation in the central rectilinear segment, which is measured by the strain gauge.
    Preferred embodiments of the present invention are described in claims 2 and following.
    Therefore, the invention is certainly innovative and advantageous features, especially since it allows sensors to be reduced in one piece, of small size and light materials, compared to those of the state of the art, differing from the existing devices with similar functions, among other reasons, because it can be manufactured by stamping, reducing machining needs.
    The sensor system according to the present invention combines high performance, based on high precision, high maximum load capacity, and high functionality at a reduced cost, which allows wireless monitoring of tensile force levels exerted during dynamic actions and exercises and static typical of strength training.
    Another competitive advantage is the absence in the market, today, of low-cost tensile force sensors such as the present invention, which allow the device to be controlled and manipulated data obtained in a friendly way through applications for mobile phones and tablets or other mobile devices. BRIEF DESCRIPTION OF THE DRAWINGS
    Next, the detailed description of a preferred embodiment of the wireless tensile force sensor of the present invention is made, for
    whose best understanding is accompanied by drawings, given merely
    illustrative and not limiting, in which:
    Fig. 1 is a perspective view of a preferred design of the sensor tensioning part of the present invention;
    Fig. 2 is a top plan view of the drawing of the tensioning piece of Fig. 1;
    Fig. 3 is a profile view of the tensioning piece of Fig. 1, free of solicitations;
    Fig. 4 is an analogous view, but on whose tensioning piece a tensile force (F) is indicated, indicated by the arrows, and in which the deformation of the rectilinear center segment of the tensioning piece according to the present invention is appreciated;
    Fig. 5 is a profile and detailed view of said central rectilinear segment, with two angled folds of the tensioning piece, significantly thicker than the central rectilinear segment. Note that the central rectilinear segment is intended for adhesion of the strain gauge;
    Fig. 6 is a top plan view of the central rectilinear segment of Fig. 5;
    Fig. 7 is a perspective view of an example of a complete tensioning system, incorporating the tensioning part according to the invention, covered by a housing;
    Fig. 8 is an exploded view of the tensioning system of Fig. 7, with the housing removed in which the processor module is shown and the wireless emitter module is appreciated; Y
    Fig. 9 shows an example of the use of the force sensing system of the present invention, adapted to a bicep curl. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
    In said drawings the constitution and the operating mode of the force sensing system of the present invention can be seen.
    This sensor system object of the invention consists of a tensioning piece (1), which carries out the primary force-deformation transduction ”, and which consists of a simple hard material body with a certain elasticity constant and which can be obtained by stamping , based on a central rectilinear segment (11) with two angled folds (10) significantly thicker than the central rectilinear segment (11). This allows a tensile force at the fixing ends (12) of the tensioning piece (1) to be transformed into a "U" deformation (4) in the central rectilinear segment (11), adhering to said segment central rectilinear
    (11) a single deformation sensor, such as an strain gauge (3), connected in turn to a processor module (5) capable of detecting and processing in data the slight elastic deformations of said central rectilinear segment (11) by the longitudinal forces generated by the traction of the fixing ends (12) of the tensioning piece (1). An example is shown in Fig. 6 in which the gauge is mounted on the upper face of the central rectilinear segment (11), although it is considered the case in which it can also be mounted on its lower face, or even on both sides ( examples not shown in the drawings).
    In addition, the two fixing ends (12) of the tensioning part (1) of the sensor system have spaces intended for fixing by means of conventional anchoring systems, such as carabiners, to conventional machines and resistance systems for physical exercise with external overloads, such as resistance machines with gravitational pulleys, elastic bands, or rigid straps for suspension training, among others.
    In accordance with an essential feature of the present invention, the force sensing system comprises a processor module (5) (Fig. 8), connected to the strain gauge (3), adapted to detect and process in data the elastic deformations produced in the central rectilinear segment (11) by the longitudinal stresses generated by the traction (F) of the fixing ends (12) of the tensioning piece (1). The processor module (5) may be arranged near the central rectilinear segment (11) of the tensioning piece (1).
    In Fig. 8 it can be seen that the system also has a wireless transmitter module (13) that sends the elastic deformation data to an external device, such as a smartphone or a tablet or a server that processes them . This processing is preferably carried out by means of a specific App to present the information to the user and save the results of the registration in said external device.
    In association with the processor module (5), there is a conditioning circuit for the strain gauge (3), a memory module for data storage, a low-power wireless transmitter module (Bluetooth LE module), a rechargeable battery that feeds the system, a USB port for recharging the battery, a triaxial accelerometer, and a sequential push-button, all these components, together with the central rectilinear segment (11) and the angled folds (10) of the tensioning piece (1), integrated into spaces made inside a rigid and light housing (6) (Fig. 7), forming a compact assembly that conceals and protects the central rectilinear segment (11) of the tensioning piece (1) and the processor module (5) and provides the sensor system with the consistency necessary to withstand falls and unwanted impacts during operation in the usual environment of use.
    In addition, the rigid housing (6) is composed of two separate parts, the base (8), inside which the tensioning piece (1) and the processor module (5) are assembled with all its components, and the cover (9), which have a rubber seal system on its contour that allows the case to be sealed tightly
    (6) rigid and is capable of absorbing, due to its elastic properties, the necessary deformation of the tensioning piece (1) when subjected to tensile forces within the nominal working range.
    With all this, a sensor system is obtained that allows measurements of the voltages generated in any type of action that involves traction (F), and sends the data recorded in real time by means of the wireless transmitter module (13) to an external device such as a smartphone or tablet that processes them through a specific App that can present the results to the user in real time offering instant feedback of the average and maximum strength levels achieved, the number of repetitions performed, the rhythm of repetition execution, or the duration, among other variables of interest.
    The sensor system of the invention can be anchored between two points where a tensile force (F) is generated, which can measure instantaneous voltage levels both in dynamic conditions, in which the sensor system moves according to the action or exercise in which the voltage to be measured is generated, as in static conditions, in which the sensor system is anchored by one of the fixing ends (12) of the tensioning piece (1), for example through a carabiner, to a fixed immovable point from which the voltage is generated.
    An example of use in a recording action in dynamic conditions is shown in Fig. 9, in which the sensor system is anchored by one of its fixing ends (12) of the tensioning piece (1) to one end of a elastic band from which the tension is generated, and the traction handle of the subject is anchored on the other of its fixing ends (12). In this case, the sensor system would record the tensile force that the subject is able to perform when stretching the elastic band during the bicep curl exercise.
    Another example (not shown in the drawings) is another recording action under static conditions in which the sensor system is anchored by one of its fixing ends (12) of the tensioning piece (1) to an immovable fixed point from the which generates the tension, and on the other of its fixing ends (12) it is anchored, for example, to one of the ends of a chain. In this case, the sensor system would record the tensile force that the subject is able to perform by tensioning the free end of the chain.
    Therefore, the sensor of the invention results in certain novel and advantageous characteristics, acquiring its own life and preferential character with respect to existing devices with similar functions. According to the
    The invention proposes a wireless sensor system for the registration of tensile forces, for application in a wide variety of conventional machines of variable resistance available in the sector of physical activity and sport with which you can perform exercises with different levels of tensile forces, with which 5 advantageous functional characteristics are obtained, since the structural design of its essential components allows to obtain a sensor system at a reduced cost, with a minimum weight (<0.175 kg) and of sufficient accuracy in a wide voltage range (Nominal capacity: 300 kg; measurement resolution: <0.3 kg), also allowing quick and easy placement of the sensor and transmission
    10 wireless real-time data to an electronic smartphone or tablet that will manage the information through a specific App, thus providing an effective solution to the problems posed in the current state of the art.
    The object of the invention can also be used in other applications where
    15 it is interesting to measure the tensile force made by humans as well as by any other element that develops a force lower than the maximum limit thought for the device. As a practical example of other applications, outside the context of physical exercise, it could be used for weighing objects.
    权利要求:
    Claims (6)
    [1]

    1.-Tensile force sensor for recording and monitoring physical exercise, of the type that are equipped with at least one strain gauge (3), characterized in that it comprises a tensioning piece (1) made of a hard material with certain elastic constants, and comprising a central rectilinear segment (11) and two angled folds (10), significantly thicker than the central rectilinear segment (11), said strain gauge (3) being arranged in said central rectilinear segment (11), all this in such a way that a tensile force at the fixing ends (12) of the tensioning piece (1) is transformed into a U-deformation in the central rectilinear segment (11).
    [2]
    2. Sensor according to claim 1, characterized in that it comprises
    - a processor module (5) connected to the strain gauge (3), adapted to detect and process in data the elastic deformations produced in the central rectilinear segment (11) by the longitudinal stresses generated by the traction of the fixing ends (12) of the tensioning piece (1);
    - and a wireless transmitter module that sends the elastic deformation data to an external device, such as a smartphone or a tablet or a server that processes them.
    [3]
    3.-Sensor according to claim 2, characterized in that the processing is carried out by means of a specific application for mobile or tablet to present the information to the user and save the results of the registration in said external device.
    [4]
    4. Sensor according to claim 2, characterized in that the components of the processor module (5), together with the central rectilinear segment (11) and the angled folds (10) of the tensioning piece (1), are integrated and assembled in spaces made inside a rigid, resistant and light housing (6), forming a compact assembly that conceals and protects the central segment of the tensioning piece (1) and the processor module (5) and provides the sensor system with consistency necessary to withstand falls and unwanted impacts during operation in the usual environment of use.
    [5]
    5. Sensor according to any one of the preceding claims, characterized in that it comprises fixing ends (12) in the tensioning piece (1) with spaces intended for anchoring carabiners, threading elements, or handles for
    5 its secure attachment to conventional resistance systems for physical exercise.
    [6]
    6. Sensor according to any one of the preceding claims, characterized in that the tensioning piece (1) is made of an alloy of a metal. 10
    FIG. one
     FIG. 2 
    FIG. 4
     FIG. 6 
    FIG. 7
    FIG. 9
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    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201631367A|ES2665309B1|2016-10-25|2016-10-25|Traction force sensor for recording and monitoring physical exercise|ES201631367A| ES2665309B1|2016-10-25|2016-10-25|Traction force sensor for recording and monitoring physical exercise|
    EP17863407.7A| EP3534127A4|2016-10-25|2017-10-25|Traction force sensor for recording and monitoring physical exercise|
    PCT/ES2017/000142| WO2018078197A1|2016-10-25|2017-10-25|Traction force sensor for recording and monitoring physical exercise|
    US16/345,190| US11027171B2|2016-10-25|2017-10-25|Tensile force sensor for recording and monitoring physical exercise|
    CN201780065401.7A| CN110168331B|2016-10-25|2017-10-25|Tension sensor for recording and monitoring physical exercises|
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