• 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:

    公开号:SE1251336A1
    申请号:SE1251336
    申请日:2012-11-27
    公开日:2014-04-15
    发明作者:Johnny Berlic
    申请人:Mindmancer AB；
    IPC主号:
    专利说明:

    Measures have been taken to avoid false alarms in some monitoring systems by detecting false alarms that reduce the number of alarm trigger signals sent to the operator.
    Thus, sometimes one and the same event, which may be false or true, triggers the surveillance camera or cameras more than once, which gives a number of alarms for one and the same event. An example might be an object in the form of a plastic bag which is transported by a blowing wind which gives a plurality of false alarm signals to the camera or cameras.
    Similar false alarm trigger signals can occur, for example, when it is snowing, when snow ings trigger the same camera fl times, which gives rise to false alarm signals that exhaust the operator as he / she has to evaluate each alarm signal.
    Despite the various measures to avoid false alarms, there is sometimes a stressful situation for the operator who has to evaluate an excessive number of alarms for his / her capacity. This is of course a disadvantage. Thus, there is a need to address at least some of the disadvantages set forth above.
    SUMMARY OF THE INVENTION According to a first aspect of the invention, these and other objects are achieved by an alarm handling device for handling alarms in a monitoring system, the alarm handling device comprising an alarm evaluation and control unit having a first, a second and a third interface, and an alarm signal controller. the first interface is designed to communicate with and receive an alarm signal from a video camera adapted to capture a video sequence where the images in the video sequence have a resolution interval between VGA and full HD, the second interface is designed to communicate with the alarm signal controller arranged to check a state of the alarm signal capable of assuming at least one of a first or a second state, the third interface is adapted to provide the captured video sequence from the camcorder to a surveillance display, the alarm signal controller further being arranged to provide an alarm to an operator if the received alarm signal is in the first state, by setting the alarm signal to the second state, and wherein the operator handles the alarm signal and a resulting eraser alarm signal provided by the operator is arranged to be fed back to the alarm evaluation and control unit to restore the alarm signal to the first condition.
    As mentioned above, preferably the images in the video sequence have a (pixel) resolution interval between VGA and full HD, i.e. preferably from 640x480 pixels resolution (width to height d) to 1920x1080 pixels resolution. In a preferred embodiment, the alarm handling device is further adapted to provide the operator with statistics regarding previous alarms generated by a specific video camera via the monitoring display. In the event that a specific alarm position (eg the monitoring of a specific video camera) is transferred between several operators, this further adaptation of the alarm handling device gives the new operator important information about what has previously happened (at the specific alarm position), which may be of greatest interest to handling of subsequent alarms.
    The alarm handling device is preferably included in a surveillance system, further comprising at least one video camera adapted to capture a video sequence where the images in the video sequence have a resolution interval between VGA and fi all HD, and at least one surveillance display presenting surveillance information to an operator.
    The camcorder is preferably a PTZ (pan / tilt / zoom camera) camera that can be adjusted to monitor a custom area.
    According to a second aspect of the invention, there is provided a method of handling the alarm in a monitoring system, the method comprising receiving in an alarm control unit an input signal from a monitoring detector unit via a first interface, communicating with an alarm signal control unit via a second interface, communicating with a display unit via a third interface, check a state of the alarm signal with at least one first or second state, set the alarm signal to the second state, present an alarm to an operator thereof if the input signal is in the first state where the operator handles the alarm signal and a resulting reset signal is provided to be fed back to the alarm evaluation and control unit to restore the alarm signal to the first state.
    According to a third aspect of the invention, there is provided a computer program product comprising a computer readable medium having stored thereon computer program means for providing the handling of the alarm in a monitoring system, the computer program product comprising code for receiving an alarm signal from a video camera in an alarm evaluation and control unit. wherein the Camcorder is adapted to capture a video sequence where the images in the video sequence have a resolution interval between VGA and full HD, via a first interface, code for communicating with an alarm signal controller via a second interface, code for communicating the captured video sequence from the Camcorder to a surveillance display via a third interface, code for checking a state of the alarm signal having at least one first or a second state, code for setting the alarm signal to the second state, code for presenting an alarm to an operator if the input signal is in it 30 first condition the operator handling the alarm signal and a resulting eraser alarm signal is sent back to the alarm evaluation and control unit (12a) to reset the alarm signal to the first state.
    The computer readable medium may be any of a releasably stable RAM (random access memory), a hard disk, a floppy disk, a CD-ROM, a DVD-ROM, a USB memory, an SD memory card, or a similar known computer readable medium.
    An advantage of the invention described here is that they prevent a number of alarm trigger signals from being produced for an event. Only one alarm trigger signal will be produced for one and the same event for one and the same camera. Problems relating to operators who have problems handling an excessive number of alarms for his / her capacity are thus avoided.
    Additional features and advantages of the present invention will become apparent when the appended claims and the following description are studied. Those skilled in the art will appreciate that various features of the present invention may be combined to create embodiments other than those described below, without departing from the scope of the present invention.
    BRIEF DESCRIPTION OF THE DRAWINGS These and other aspects of the present invention will now be described in more detail with reference to the accompanying drawings which show presently preferred embodiments of the invention, in which: Fig. 1 is a schematic block diagram of a monitoring system including an alarm handling device in which embodiments of the invention are implemented, and Pig. 2 is a flow chart showing an embodiment of a method for handling the alarm.
    DETAILED DESCRIPTION The present invention will now be described in more detail hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments described herein, but these embodiments are provided for the sake of thoroughness and completeness and convey the full scope of the invention to those skilled in the art. The same reference numerals refer to like elements throughout the text. Fig. 1 shows an example of a monitoring system comprising an alarm handling device in which embodiments of the invention can be implemented. As shown in Fig. 1, the surveillance system 10 comprises a number of video cameras 15, here four 15 a-d. The video cameras 15 may be in the form of surveillance cameras, such as CCD cameras covering a surveillance area 16 where e.g. one or fl your objects are to be monitored. The monitoring system 10 further includes an alarm handling device 12 (shown in phantom) for handling the alarm. The alarm handling device 12 is connected to, or can communicate with, the video cameras 15 and a display unit 19, which may comprise a number of display subunits 19a - d, which for example correspond to the number of video cameras 15a - d.
    For example, a display subunit 19a may display a real-time image of the monitor area 16, while another camcorder 15a may display a stored sequence of images on the display subunit 19b that have been stored due to. an event. The event that triggered the camcorder 15 or the cameras may, for example, be something unusual that has occurred. An example of an event which gives a false alarm trigger signal, hereinafter referred to as "alarm signal" L is an object in the form of a plastic bag which is transported by a blowing wind which gives a number of false alarm trigger signals to the camera or cameras. If e.g. a person climbs over a fence surrounding the monitoring area 16, a true alarm signal will be produced. In some systems 10, “intelligent” detectors may be provided which can reduce the number of alarm trigger signals given by various measures. However, this will not be described in this context.
    Here, the term "alarm signal" includes any component or parameter that represents a particular "alarm". Here, the term "event" refers to anything that gives an alarm signal L. Typically, an event is something unusual that has happened.
    The alarm handling device 12 comprises an evaluation and control unit 12a implemented, for example, in a computer server, such as a specifically adapted video server, in which computer programs such as scripts can be implemented by a person skilled in the art of computer programming. It should be noted that the functionality provided by a video server can be provided as a unit and / or by means of a number of units, e.g. in a distributed computer processing cluster, e.g. seen from a "cloud computing perspective".
    The alarm management device 12 typically includes a first, second and third interface 14, 17, 18, although interfaces already present in the video server may also be used to the extent desired. For simplicity, only one interface 14, 17 and 18 is shown, although it is obvious that all camcorders 15 communicate with the first interface 14, etc. Typically, the evaluation and control unit 12a receives images produced by, or transmitted from, the camcorders. Via the first interface 14, evaluates these and finally sends them via the third interface 18 to the display unit 19 which is monitored by an operator (not shown). Typically, there is also an alarm signal controller 12b, a database 12c for storing data and / or computer programs, typically for implementing an alarm handling device 12. There is also an application unit 12d for handling alarms and events. The application unit l2d may contain and provide video control functions required, including such functions, which will not be described in more detail, as will be apparent to those skilled in the art of surveillance systems and programming.
    With further reference to Fig. 2 which shows an example of a function according to an embodiment of the invention in the form of a fate diagram. The first interface 14 is designed to receive an alarm signal from the camcorders 15, the second interface 17 is designed to communicate with the alarm signal controller 12b, and the third interface 18 to communicate with the display unit 19 among other units, where the latter units (shown) not) will be described in more detail below.
    Initially, the evaluation and control unit 12a receives, step 201, an input, in the form of a special alarm L1 caused by a special event, from a video camera 15 via the first interface 14. The input may come from a false, or true, event which triggers the camcorder, as shown by a timeline in Fig. 2, where F represents false events and S represents true events. All events can be false or true even if they are not shown in this particular figure. Thus, the number of events does not matter.
    In a next step, the evaluation and control unit 12a, which communicates, 203, with the alarm signal control unit 12b via the second interface 17, step 205, checks a state of the alarm signal, here L1, which has at least a first state here designated "GREEN", or a other conditions, here referred to as "RED". The evaluation and control unit 12a is typically implemented by a script in software in the video server. The alarm signal L1, which here comes from a first video camera 15, is set to the second state, RED, step 206 and presented, step 207, to the operator if the state of the input alarm signal L1 was in the first state GREEN, in step 205, the operator handling , typically, the alarm signal L1 and a resulting erasure signal STATUS = CLEAR are returned, step 209, to the evaluation and control unit 12a to restore, step 212, the state of the alarm signal L1 to the first state GREEN, provided that the operator has erased the alarm signal L1 , step 211. 10 Conversely, if the alarm signal L1 was in state RED in step 205, or not deleted, step 211, or if the alarm signal was not alarm signal L1, or the event was in practice no alarm, no alarm is presented to the operator in step 207. In this way, fl your alarms triggered by the same video camera 15, for the same alarm signal L1 of the same event will only be presented once for ope the rat.
    If the operator has not deleted the alarm signal for this particular event L1 and set STATUS = CLEAR for L1, the state of the alarm signal L1 will not be GREEN, steps 211 and 212, and a new alarm from the same camera will not be presented to the operator.
    Alarms L2, LS etc. from other camcorders 15 will be handled in the same way as for L1, i.e. The alarm signal status will be checked and evaluated before any alarm is presented to the operator. An example might be an alarm signal L2 coming from a second camera, which is checked in step 205, which is in the second state RED, i.e. L2 = RED. Then, this alarm signal is not presented to the operator in step 207.
    Furthermore, if the operator has not reset the alarm signal L1, then in step 211, or if the status is not clear, L1 will not be set to the first state GREEN again but will remain in RED.
    Furthermore, if the alarm checked in step 211 is not the first alarm L1 coming from a particular camera, but comes from another camera giving another, say a second alarm signal L2, L1 cannot be set to GREEN in step 212 because it does not was the first alarm signal without the second coming from different cameras.
    A major advantage of this embodiment is that it makes it easier for the operator of the monitoring system to focus on the monitoring without many disturbing false alarms, or even innumerable disturbing true alarms, for one and the same event.
    Another advantage of some of the embodiments shown here is that they are easy to implement for a person skilled in the art of computer programming of simple scripts for the video server.
    Furthermore, although the invention has been described with reference to specific exemplary embodiments, many different changes, modifications or the like will become apparent to those skilled in the art. Variations of the described embodiments may be understood and created by those skilled in the art upon practice of the claimed invention, upon study of the drawings, description and appended claims. The requirements do not exclude the word “includes” other elements or steps, and indefinite form does not exclude a number. A single processor or other device can handle the functions of your parts recited in the requirements. The fact that certain measures are recited in different dependent requirements does not indicate that a combination of these measures cannot be used to advantage. Furthermore, a unilateral reference in the text has been made solely for the sake of consistency and simplicity.
    权利要求:
    Claims (9)
    [1]
    An alarm handling device (12) for handling alarms in a monitoring system (10), the alarm handling device (12) comprising: - an alarm evaluation and control unit (12a) with a first, a second and a third interface (14, 17, 18) , and an alarm signal control unit (12b), wherein: - the first interface (14) is designed to communicate with and receive an alarm signal (L) from a video camera (15) adapted to capture a video sequence where the images in the video sequence have a resolution interval between VGA and full HD, - the second interface (17) is designed to communicate with the alarm signal controller (12b) arranged to check a state of the alarm signal (L) which may assume at least one of a first (L = GREEN) or a second (L = RED ), the third interface (18) is adapted to provide the captured video sequence from the camcorder (15) to a monitoring display (19), the alarm signal control unit (12b) being further arranged to provide a 1a to the operator if the received alarm signal (L) is in the first state (L = GREEN), by setting the alarm signal to the second state, and the operator handles the alarm signal (L) and a resulting erase alarm signal (STATUS = CLEAN) provided from the operator is arranged to be fed back to the alarm evaluation and control unit (12a) to reset the alarm signal to the first state (L = GREEN).
    [2]
    Alarm handling device (12) according to claim 1, wherein the operator can handle the alarm signal (L) according to selectable levels.
    [3]
    The alarm handling device (12) according to claim 2, wherein the selectable levels include accepting, deleting and creating a state of the alarm signal (L1 = CREATE, ACCEPT, CLEAN).
    [4]
    An alarm handling device (12) according to any one of the preceding claims, further comprising: - via the monitoring display (19) providing the operator with statistics regarding previous alarms generated by a specific video camera (15). 10 15 20 25 30 10
    [5]
    Surveillance system (10), comprising: - at least one video camera (15) adapted to capture a video sequence where the images in the video sequence have a resolution interval between VGA and full HD, - at least one surveillance display (19) presenting surveillance information to an operator, and an alarm handling device (12) according to any one of claims 1 to 4 for handling alarms in the monitoring system (10).
    [6]
    The surveillance system (10) of claim 5, wherein the camcorder (15) is a PTZ (pan / tilt / zoom camera) camera.
    [7]
    A method for handling the alarm in a monitoring system (10), which method comprises: - in an alarm evaluation and control unit (12a) receiving (201) an alarm signal (L) from a video camera (15), the video camera (15) adapted to capture a video sequence where the images in the video sequence have a resolution interval between VGA and fi all HD, via a first interface (14), - communicate (203) with an alarm signal control unit (12b) via a second interface (17), - communicate the captured video sequence from the camcorder (15) to a surveillance display via a third (18) interface, - checking (205) a state of the alarm signal (L) having at least one first (L = GREEN) or a second (L = RED) state, - setting (206) the alarm signal (L) to the second state, - present (207) an alarm to an operator if the input signal is in the first state (L = GREEN) whereby the operator handles the alarm signal (L) and a resulting eraser alarm signal (STATUS = CLEAR) sent back (209) to alarm TV the earthing and control unit (12a) to reset the alarm signal to the first state (L = GREEN).
    [8]
    The method of claim 7, further comprising: - providing, to the operator, statistics regarding previous alarms generated by a specific video camera (15). 10 15 20 11
    [9]
    A computer program product comprising a computer readable medium having stored thereon computer program means for providing alarm handling in a monitoring system (10), the computer program product comprising: - code for receiving in an alarm evaluation and control unit (12a) an alarm signal (L ) from a video camera (15), the video camera (15) being adapted to capture a video sequence where the images in the video sequence have a resolution interval between VGA and full HD, via a first interface (14), - code for communicating with an alarm signal control unit (12b) via a second interface (17), - code for communicating the captured video sequence from the camcorder (15) to a surveillance display via a third (18) interface, - code for checking a state of the alarm signal (L) having at least one first ( L = GREEN) or a second (L = RED) state, - code for setting the alarm signal (L) to the second state, - code for presenting an alarm to an operator if the input signal ä r in the first state (L = GREEN) whereby the operator handles the alarm signal (L) and a resulting eraser alarm signal (STATUS = CLEAR) is sent back to the alarm evaluation and control unit (12a) to reset the alarm signal to the first state (L = GREEN). The computer program product according to claim 9, wherein the computer program product further comprises: - code for providing, to the operator, statistics regarding previous alarms generated by a specific video camera (15).
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    同族专利:
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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
    SE1251336A|SE536629C2|2012-11-27|2012-11-27|Alarm management device and method for handling an alarm in a monitoring system|SE1251336A| SE536629C2|2012-11-27|2012-11-27|Alarm management device and method for handling an alarm in a monitoring system|
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