WO2012032968A1 - Monitor device with position detection unit - Google Patents

Monitor device with position detection unit Download PDF

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Publication number
WO2012032968A1
WO2012032968A1 PCT/JP2011/069580 JP2011069580W WO2012032968A1 WO 2012032968 A1 WO2012032968 A1 WO 2012032968A1 JP 2011069580 W JP2011069580 W JP 2011069580W WO 2012032968 A1 WO2012032968 A1 WO 2012032968A1
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WO
WIPO (PCT)
Prior art keywords
warning
intruder
line
monitoring device
detection unit
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Application number
PCT/JP2011/069580
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French (fr)
Japanese (ja)
Inventor
林出幸治
池田祐幸
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オプテックス株式会社
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Publication of WO2012032968A1 publication Critical patent/WO2012032968A1/en

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier

Definitions

  • the present invention relates to a monitoring device with a position detection unit that detects the position of an intruder who has entered a warning area and monitors the intruder.
  • an alarm is issued when an intruder who has illegally entered the alert area is detected by the opposing warning line cutoff detection sensor, etc., and the surveillance camera is turned to the intruder's passing position to image the intruder. And monitor intruders.
  • the counter-type warning line cutoff detection sensor for example, a cutoff type sensor that detects a change in the amount of light due to cutoff of a detection wave that has been projected and received, on both ends of the longitudinal direction (direction perpendicular to the intrusion direction) of the warning area, It is known that a transmitter and a receiver having optical axes parallel to each other in the longitudinal direction in a substantially horizontal plane are provided so as to face each other, and the intruder's passing direction and size are discriminated by blocking the detection wave of the intruder ( For example, Patent Document 1).
  • the conventional counter-type warning line cut-off detection sensor simply determines the intruder's passing direction and size, and can detect the intruder's passing position and direct the surveillance camera based on it. There wasn't.
  • the conventional counter-type warning line cut-off detection sensor simply determines the intruder's passing direction and size, and can detect the intruder's passing position and direct the surveillance camera based on it. There wasn't.
  • An object of the present invention is to provide a monitoring device with a position detection unit that can easily detect the position of an intruder with a simple configuration and low cost by solving the above-described problems.
  • the monitoring device with a position detection unit is configured such that a transmitter and a receiver of a counter-type warning line cutoff detection sensor that sets a warning line including a detection wave in a warning area are detected waves in a side view. Are arranged opposite to each other so as to form a warning line including at least two detection waves having a substantially horizontal transmission path and having transmission paths that are oblique to each other in plan view.
  • a monitoring device that detects and monitors an intruder and includes a position detection unit that detects a passing position of the intruder based on the interception of the diagonal warning line by the intruder.
  • the transmission paths that are oblique to each other in plan view refer to a state in which the detection waves (warning lines) are not parallel to each other in plan view.
  • At least two diagonal warning lines are blocked by an intruder, that is, based on the time difference of the warning line cutoff that changes according to the intrusion position of the warning area because the warning line is diagonal. Since the passing position of the intruder is detected, the passing position of the intruder can be easily detected with a simple configuration and low cost.
  • the opposed warning line cutoff detection sensor has two sets of transmitters and receivers installed at both ends in the longitudinal direction of the warning area, and one end of each of the sets of transmitters and receivers is connected to the one end of the warning area.
  • Two diagonal warning lines are formed with the other end of each set arranged close to each other at the other end, spaced apart in a direction perpendicular to the longitudinal direction. Therefore, by detecting the time difference between the interception of the two diagonal warning lines by the intruder, the passing position of the intruder can be easily detected with a simple configuration and low cost.
  • the opposed warning line cutoff detection sensor Preferably, in the opposed warning line cutoff detection sensor, four sets of transmitters and receivers are installed at both ends in the longitudinal direction of the warning area, and each pair of transmitters or receivers is provided at the both ends of the warning area.
  • the four warning lines Arranged at each end in a direction orthogonal to the direction, the four warning lines have a substantially horizontal transmission line in a side view, and the two warning lines are parallel to the longitudinal direction in a plan view. It has a road and is formed so as to have an oblique transmission line so that the other two warning lines cross each other at the approximate center of the warning area in plan view. Therefore, the passage position of the intruder can be detected more accurately and quickly by detecting the time difference between the interruption of the two parallel warning lines and the two oblique warning lines.
  • a monitoring camera for imaging a warning area is provided, and the monitoring camera is set to be able to be directed to the detected passing position of the intruder. Moreover, based on the detection result by the position detection unit, a passing position information signal for turning the surveillance camera to the passing position of the intruder is output. Therefore, the intruder can be easily captured by video based on the position detection of the intruder.
  • a single surveillance camera is provided in a plurality of alert areas. Therefore, monitoring based on the position detection of an intruder can be performed with a single monitoring camera, and the cost of the apparatus can be reduced.
  • the passing position of the intruder is detected based on the time difference of the warning line interruption that changes according to the intrusion position of the warning area.
  • the passing position of the intruder can be easily detected at low cost.
  • FIG. 1 is a configuration diagram illustrating a monitoring device 1 with a position detection unit according to a first embodiment of the present invention.
  • the monitoring device 1 is provided with a pair of sensor installation locations 4 extending in the y direction, for example, provided at both ends of the longitudinal direction of the elongated warning area (section) A in a plan view, that is, in the direction x orthogonal to the intrusion (entry) direction y. (4A, 4B) arranged opposite to each other, consisting of two sets of transmitter T1, receiver R1, transmitter T2, and receiver R2 that project and receive two detection waves S1 and S2 of a projection beam such as infrared rays.
  • a projection beam such as infrared rays.
  • Type surveillance line blocking detection sensor 2 and surveillance camera 3 which is set so as to be able to be directed to the passing position of intruder (human body) H, and detects intruder H and detects the passing position. And a control unit 5 that performs control.
  • the intrusion detection unit U is configured by the opposed warning line cutoff detection sensor 2 and the control unit 5.
  • the two transmitters T1 and T2 of the opposed warning line cutoff detection sensor 2 are close to each other in the y-direction substantially central part 4A0 in the rightmost sensor installation location 4A, and the y in the leftmost sensor installation location 4B.
  • the receivers R1 and R2 that receive the two detection waves from the transmitters T1 and T2, respectively, are arranged so as to be spaced apart from each other in the upper end (back) portion 4B1 and the lower end (front) portion 4B2.
  • These two detection waves S1 and S2 form a warning line S.
  • the substantially horizontal transmission line in the side view includes a slightly inclined transmission line, and it is sufficient that the detection wave exists within a range where the human body H can be detected.
  • the receivers R1 and R2 are located close to each other at a substantially central portion 4A0 of the sensor installation location 4A, and the transmitters T1 and T2 are separated from the upper end (back) portion 4B1 and the lower end (front) portion 4B2 of the sensor installation location 4B.
  • position so that it may mutually oppose, and you may arrange
  • one of the transmitter and the receiver may be spaced apart from the upper and lower ends of the sensor installation location 4A, and the other may be disposed close to the approximate center of the sensor installation location 4B.
  • the control unit 5 controls the entire apparatus and includes an intrusion detection unit 6, a position detection unit 7, an alarm output unit 8, a camera operation output unit 9, and a memory 10.
  • the intrusion detection unit 6 emits light from the transmitter T and is received by the receiver R when the detected light level changes below the predetermined reference level due to change in the amount of light due to interruption of the warning line S (transmission path) due to intrusion. Intruder H is detected.
  • the position detection unit 7 detects the passing position of the intruder H based on the interception of the diagonal warning line S by the intruder H detected to be intruded.
  • the alarm output unit 8 detects the passage of the intruder H
  • the alarm output unit 8 outputs a detection signal for issuing a warning by reporting to the security system or by voice or lighting display.
  • the camera operation output unit 9 activates the surveillance camera 3 and operates its horizontal and vertical angles with a remote control to detect the intruder H's detected position.
  • a passing position information signal for automatically turning to the passing position is output.
  • the memory 10 stores various data such as the angle of the warning line S and the detection position of the intruder H.
  • the position detector 7 will be described in detail.
  • the warning distance L is selected by a setting switch or the like when the apparatus is installed, but may be obtained by calculation based on angle information ⁇ a and ⁇ b (°) from the angle sensor or the like when adjusting the optical axes of the transmitter and the receiver.
  • ⁇ (°) tan ⁇ 1 (L / (W / 2))
  • the moving speed v (m / sec) of the intruder H for calculating the passing position of the intruder H is detected when the warning lines S1 and S2 are interrupted.
  • the warning received by the receiver R1 Infrared light receiving width wb (m) and intruder H thickness (average human body thickness) wh (m) set on the transmission line of line S1, and blocking time ts (sec) on intruder H alert line S1
  • the moving speed v (m / sec) of the intruder H is calculated.
  • v (m / sec) (wh (m) -wb (m)) / ts (sec)
  • the distance Y between the interrupted warning line S1 and the warning line S2 ( m) is calculated.
  • the time t is the time difference between the diagonal warning lines S1 and S2, and the distance Y (m) between the diagonal warning lines S1 and S2 corresponds to the y-direction position in the warning area A.
  • the detection position of H in the y direction is specified.
  • Y (m) v (m / sec) ⁇ t (sec)
  • FIG. 2 is a flowchart showing the operation of the monitoring device 1.
  • the angle ⁇ (°) with respect to the y direction of the warning lines S1 and S2 obtained from the warning distance L (m) in the x direction and the width W (m) in the y direction is stored in the memory 10 in advance (step).
  • step 1 the angle ⁇ (°) with respect to the y direction of the warning lines S1 and S2 obtained from the warning distance L (m) in the x direction and the width W (m) in the y direction is stored in the memory 10 in advance (step).
  • the moving speed v (m / sec) of the intruder H is calculated based on the intercept time (step).
  • the intruder H As the intruder H moves in the y direction, the intruder H is cut off from the time t (sec) from the start of the warning line S1 to the start of the warning line S2 and the moving speed v (m / sec) of the intruder H.
  • a distance Y (m) in the y direction between the warning line S1 and the warning line S2 is calculated (step S3).
  • a distance X (m) in the x direction from the side edge of the sensor installation location 4A in the alert area A to the intruder H position is calculated from the distance Y (m) and the angle ⁇ (°) (step S4).
  • an alarm based on the position detection in the x and y directions based on the distances X and Y (m) of the intruder H is output, and the detected positions in the x and y directions are output (step S5).
  • the passing position of the intruder H is detected based on the time difference between the interruption of the warning lines S1 and S2 that changes according to the intrusion position of the warning area A.
  • the passing position of the intruder H can be easily detected with a simple configuration and low cost.
  • FIG. 3 is a configuration diagram illustrating a monitoring device 1A with a position detection unit according to the second embodiment.
  • the opposing warning line cutoff detection sensor 2 arranges two sets of transmitters T1 and T2 and receivers R1 and R2 that project and receive two detection waves S1 and S2 so as to face each other.
  • the opposing warning line cutoff detection sensor 2 includes a single transmitter T that projects light by expanding the transmission path of the detection wave, and two receivers R1 that receive the detection wave S, By arranging R2 so as to face each other, warning lines S1 and S2 are substantially configured.
  • the angle ⁇ (°) formed by the diagonal warning lines S1 and S2 is determined from the warning distance L (m) in the x direction of the warning area A and the width W (m) in the y direction.
  • ⁇ (°) 2 ⁇ tan ⁇ 1 ((W / 2) / L)
  • the right edge of the warning area A is calculated after the moving speed v (m / sec) of the intruder and the distance Y (m) between the blocked warning line S1 and the warning line S2 are calculated.
  • the distance X (m) in the x direction from the side edge of the sensor installation location 4A to the intruder H position is calculated by the following equation.
  • Other configurations are the same as those in the first embodiment.
  • X (m) (Y (m) / 2) / tan ( ⁇ / 2) (°)
  • the spread of the transmission path of the infrared beam from a single transmitter T to the two receivers R1 and R2 is used.
  • the moving speed v (m / sec) of the intruder H Of the infrared beam that has been projected from a single transmitter T and whose transmission path has been expanded, the infrared light receiving width wb (m) of the warning lines S1 and S2 that are preset light receiving widths of the receivers R1 and R2 are used.
  • a single transmitter T and two receivers R1 and R2 are arranged opposite to each other, and by detecting the time difference between the interception lines S1 and S2 by the intruder H, a simple configuration and low The passing position of the intruder H can be easily detected at a cost.
  • FIG. 4 is a configuration diagram illustrating a monitoring device 1B with a position detection unit according to the third embodiment.
  • the third embodiment is different from the first embodiment in that the opposing warning line cutoff detection sensor 2 constitutes four warning lines S1 to S4, and four sets of transmitters T1 to T4 and receivers R1 that project and receive light respectively.
  • R4 are installed opposite to each other in a pair of sensor installation locations 4 (4A, 4B) provided at both ends in the x direction of the warning area A and extending in the y direction. Each set has its own set of transmitter or receiver.
  • the transmitter T1 is disposed at the upper end (back) portion 4B1 of the leftmost sensor installation location 4B, and the receiver R1 is disposed at the upper end (backward) portion 4A1 of the rightmost sensor installation location 4A.
  • the transmitter T2 is disposed at the lower end (front) portion 4A2 of the rightmost sensor installation location 4A, and the receiver R2 is disposed at the upper end (backward) portion 4B1 of the leftmost sensor installation location 4B.
  • the receiver R3 is arranged at the lower end (front side) portion 4B2 at the leftmost sensor installation location 4B to project and receive light on the alert line S3, and the transmitter T4 is the leftmost sensor.
  • the receiver R4 is located at the right end.
  • alert line S4 is arranged at the lower end (front) portion 4A2 of capacitors location 4A.
  • a warning line S is formed by these four warning lines S1 to S4.
  • the warning line S includes four warning lines S1 to S4 having a substantially horizontal transmission line in a side view, and two warning lines S1 and S4 having a transmission line parallel to the x direction in a plan view. Is an angle ⁇ c (in relation to the x direction) with respect to the y direction between the lower end (front side) 4A2 of the sensor installation location 4A and the upper end (back) portion 4B1 of the sensor installation location 4B in plan view.
  • the other one of the warning lines S3 in plan view is the upper end (back) portion 4A1 of the sensor installation location 4A and the lower end (front side) of the sensor installation location 4B.
  • the two warning lines S2 and S3 are substantially at the center of the warning area A with a transmission line that forms an angle ⁇ d with respect to the part 4B2 (angle ⁇ d with respect to the x direction) with respect to the y direction.
  • one set or two or more sets of transmitters and receivers are arranged in the opposite positions. May be.
  • the position detection unit 7 of the third embodiment will be described.
  • ⁇ (°) tan ⁇ 1 (L / W)
  • v (m / sec) (wh (m) -wb (m)) / ts (sec)
  • y between the interrupted warning line S1 and the warning line S2 A direction distance Y1 (m) is calculated.
  • Y1 (m) v (m / sec) ⁇ t1 (sec)
  • a distance Y2 (m) in the y direction between the interrupted alert line S2 and the alert line S3 is calculated from a time t2 (sec) from when the alert line S2 is interrupted to when the alert line S3 is interrupted.
  • Y2 (m) v (m / sec) ⁇ t2 (sec)
  • a distance Y3 (m) in the y direction between the interrupted alert line S3 and the alert line S4 is calculated from a time t3 (sec) from the commencement of the alert line S3 to the alert start of the alert line S4.
  • Y3 (m) v (m / sec) ⁇ t3 (sec)
  • the times t1, t2, and t3 are the time differences of the interruptions in the warning lines including the diagonal warning lines S2 and S3, and the distances Y1, Y2, and Y3 (m) between the warning lines including the diagonal warning lines S2 and S3.
  • X1 (m) Y1 (m) ⁇ tan ⁇ (°)
  • X2 (m) (W (m) / 2) ⁇ tan ⁇ (°) ⁇ (Y2 (m) / 2)
  • X3 (m) Y3 (m) ⁇ tan ⁇ (°)
  • the distances in the x direction from the x-direction center line (center position) of the alert area A to the intruder H position are L / 2-X1, L / 2-X2, and L / 2-X3 (m), respectively. .
  • FIG. 5 is a flowchart showing an example of the operation of the monitoring device 1B according to the third embodiment.
  • the angle ⁇ (°) of the alert lines S2 and S3 obtained from the alert distance L (m) in the x direction and the width W (m) in the y direction is stored in the memory 10 in advance (step S11).
  • the moving speed v (m / sec) of the intruder H is calculated based on the intercept time (step S12).
  • a distance Y1 (m) between the blocked alert line S1 and the alert line S2 is calculated (step S13).
  • the distance Y2 (m) between the interrupted alert line S2 and the alert line S3 from the time t2 (sec) from the commencement of the alert line S2 to the alert start of the alert line S3 is the alert line.
  • the distance Y3 (m) between the blocked warning line S3 and the warning line S4 is calculated.
  • Step S14 distances X1, X2, and X3 (m) in the x direction from the side edge of the sensor installation location 4A to the intruder H position are calculated from the distances Y1, Y2, and Y3 (m) and the angle ⁇ (°).
  • Step S14 an alarm based on the position detection in the x and y directions based on the distances X and Y (m) of the intruder H is output, and the detected positions in the x and y directions are output (step S15).
  • the passage position of the intruder H is detected more accurately and quickly by detecting the time difference between the interruption of the two parallel warning lines S1 and S4 and the interruption of the two oblique warning lines S2 and S3. be able to.
  • the angle of the warning line is increased and the blocking time is increased, so that the resolution can be increased.
  • the intruder H blocks from the alert line S1 to S3. Since the fact that the vehicle is passing the right side of the alert area A can be determined when the alert line S2 or S3 is interrupted, the approximate passing position of the intruder H can be detected before the intruder H is accurately detected.
  • the surveillance camera 3 can be turned to the right or left side of the warning area A through which the intruder H passes, so that before the intruder H accurately detects the position. In addition, it is possible to quickly output a passing position information signal for directing the surveillance camera 3 to the approximate passing position of the intruder H.
  • the monitoring device 1B Unlike the case where the moving speed v (m / sec) of the intruder is detected when the warning line S1 is cut off, the other example is that the moving speed v (m / sec) of the intruder is set to the warning line S1.
  • FIG. 6 is a flowchart showing the operation of another example of the monitoring device 1B of the third embodiment.
  • the angle ⁇ (°) of the warning lines S2 and S3 obtained from the warning distance L (m) in the x direction and the width W (m) in the y direction is stored in the memory 10 in advance (step S21).
  • the movement speed v (m / sec) of the intruder is the time t (sec) from the start of shutting down the alert line S1 to the start of shutting down the alert line S4, or the time during which the alert lines S1, S2, and S3 are shut off. It is calculated from the total time t (sec) of t1, t2, t3 (sec) and the width W (m) in the y direction of the alert area A (step S23).
  • the distance Y1 (m), the distance Y2 (m), and the distance Y3 (m) are calculated from the times t1, t2, and t3 (sec) and the moving speed v (m / sec) of the intruder H. (Step S24).
  • Step S25 distances X1, X2, and X3 (m) in the x direction from the side edge of the sensor installation location 4A to the intruder H position are calculated from the distances Y1, Y2, and Y3 (m) and the angle ⁇ (°).
  • Step S25 an alarm based on the position detection in the x and y directions based on the distances X and Y of the intruder H is output, and the detected positions in the x and y directions are output (step S26).
  • the moving speed v (m / sec) of the intruder H can be accurately obtained from the total time t (sec) and the width W (m). Since the position detection of the intruder H passes after the warning area A, it is mainly used for monitoring the intruder H after leaving the warning area A. Note that the movement speed v (m / sec) is calculated by using the calculation based on the total time t (sec) and the width W (m) and the calculation based on one interruption time of the warning line S in the third embodiment. May be acquired.
  • blocking detection sensor 2 uses infrared rays as a detection wave, even if it uses the device which can be alerted in a line shape, such as a laser and a microwave. Good.
  • a single warning area A is used.
  • the present invention may be applied to a case where a plurality of warning areas are provided in the x direction with respect to a long warning distance in the x direction.
  • a single camera 3 may be used. Thereby, cost reduction of an apparatus can be achieved.
  • the position detection accuracy may be improved by increasing the number of the warning lines S by adding the opposing type warning line cutoff detection sensor 2.
  • the opposing warning line cutoff detection sensor 2 may be multistage in the vertical direction as viewed from the side, or the height may be adjustable. Thereby, a human body and a small animal, a bird, etc. can be distinguished easily.
  • the sensor installation location 4 and the control part 5 are arrange
  • the sensor installation location 4 may not be integrated, and a unit for controlling the information from each detection sensor 2 unit may be provided so that the unit of each detection sensor 2 can be installed at an arbitrary position.
  • the camera operating output unit 9 when the camera operation output unit 9 detects the passing position of the intruder H, the camera operating output unit 9 outputs a passing position information signal for the surveillance camera 3 to be automatically directed to that position.
  • a guard or the like may manually turn the surveillance camera 3.
  • the monitoring camera 3 may be omitted, and a security guard or the like may be informed of an intruder position detection alarm. In this case, a guard or the like can rush to the detection position by an alarm notification.
  • Monitoring device with position detection unit 2 Opposing warning line cutoff detection sensor 3: Monitoring camera 5: Control unit 7: Position detection unit 8: Alarm output unit 9: Output unit for camera operation A: Warning area H: Intruder S: Warning line T: Transmitter R: Receiver

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Abstract

A transmitter (T) and a receiver (R) of an oppositely-arranged caution line blocking detection sensor (2), which define a caution line (S) comprised of a detection wave in a caution region (A), are arranged opposite each other so as to form the caution line (S) which includes two detection waves (S1, S2) having transmission paths which are substantially horizontal from a side viewpoint and mutually oblique from a plan viewpoint, and a position detection unit (7) is provided such that intrusion is detected by the blocking of the caution line (S) and an intruder (H) is monitored, and the passing position of the intruder (H) is detected on the basis of the blocking of the oblique caution line (S) by the intruder (H).

Description

位置検出部付き監視装置Monitoring device with position detector 関連出願Related applications
　本願は、日本国で２０１０年９月７日に出願した特願２０１０－１９９６３５の優先権を主張するものであり、その全体を参照により本願の一部をなすものとして引用する。 This application claims the priority of Japanese Patent Application No. 2010-199635 filed on September 7, 2010 in Japan, and is incorporated herein by reference in its entirety.
　本発明は、警戒領域へ侵入した侵入者の位置を検出して、侵入者を監視する位置検出部付き監視装置に関する。 The present invention relates to a monitoring device with a position detection unit that detects the position of an intruder who has entered a warning area and monitors the intruder.
　この種の監視装置では、警戒領域へ不法に侵入した侵入者を対向式警戒ライン遮断検知センサ等で検知したときに警報を発するとともに、侵入者の通過位置に監視カメラを振り向けて侵入者を映像で捉え、侵入者を監視する。 With this type of monitoring device, an alarm is issued when an intruder who has illegally entered the alert area is detected by the opposing warning line cutoff detection sensor, etc., and the surveillance camera is turned to the intruder's passing position to image the intruder. And monitor intruders.
　前記対向式警戒ライン遮断検知センサとしては、例えば投受光された検知波の遮断による光量変化を検知する遮断式のセンサで、警戒領域の長手方向（侵入方向に直交する方向）の両端側に、略水平面内で長手方向に互いに平行な光軸を有するトランスミッターとレシーバーを相対向させて設け、侵入者の検知波遮断により、侵入者の通過方向および大きさを判別するものが知られている（例えば、特許文献１）。 As the counter-type warning line cutoff detection sensor, for example, a cutoff type sensor that detects a change in the amount of light due to cutoff of a detection wave that has been projected and received, on both ends of the longitudinal direction (direction perpendicular to the intrusion direction) of the warning area, It is known that a transmitter and a receiver having optical axes parallel to each other in the longitudinal direction in a substantially horizontal plane are provided so as to face each other, and the intruder's passing direction and size are discriminated by blocking the detection wave of the intruder ( For example, Patent Document 1).
特開平１０－３３４３５１号公報JP-A-10-334351
　しかし、従来の対向式警戒ライン遮断検知センサでは、単に侵入者の通過方向および大きさを判別するにすぎず、侵入者の通過位置を検出してこれに基づいて監視カメラを振り向けることができなかった。一方、物体の位置検出をするために、警戒領域を区分化して対向式警戒ライン遮断検知センサを各区域に配置することが考えられるが、センサが多数必要となり、設備が大型化するとともに、複数の設置に要する費用等で高コスト化する。 However, the conventional counter-type warning line cut-off detection sensor simply determines the intruder's passing direction and size, and can detect the intruder's passing position and direct the surveillance camera based on it. There wasn't. On the other hand, in order to detect the position of an object, it is conceivable to divide a warning area and arrange an opposing warning line cutoff detection sensor in each area. The cost will be increased due to the cost required for the installation.
　また、複数の警戒領域に単一の監視カメラを設置して低コスト化を図る場合、この複数の警戒領域による広い区域に対して、侵入者の位置を容易に検出できることが必要となる。 Also, in order to reduce the cost by installing a single surveillance camera in a plurality of warning areas, it is necessary to be able to easily detect the position of an intruder in a wide area by the plurality of warning areas.
　本発明は、前記の問題点を解決して、簡単な構成かつ低コストで、侵入者の位置を容易に検出できる位置検出部付き監視装置を提供することを目的とする。 An object of the present invention is to provide a monitoring device with a position detection unit that can easily detect the position of an intruder with a simple configuration and low cost by solving the above-described problems.
　前記目的を達成するために、本発明にかかる位置検出部付き監視装置は、警戒領域に検知波からなる警戒ラインを設定する対向式警戒ライン遮断検知センサのトランスミッターとレシーバーが、側面視で検知波が略水平な伝送路をもち、平面視で互いに斜めの伝送路をもつ少なくとも２本の検知波を含む警戒ラインを形成するように相対向して配置されて、前記警戒ラインの遮断により侵入を検知し、侵入者を監視する監視装置であって、侵入者による前記斜めの警戒ラインの遮断に基づいて、侵入者の通過位置を検出する位置検出部を備えている。
　ここで、平面視で互いに斜めの伝送路とは、平面視で検知波（警戒ライン）が互いに平行ではない状態をいう。 In order to achieve the above object, the monitoring device with a position detection unit according to the present invention is configured such that a transmitter and a receiver of a counter-type warning line cutoff detection sensor that sets a warning line including a detection wave in a warning area are detected waves in a side view. Are arranged opposite to each other so as to form a warning line including at least two detection waves having a substantially horizontal transmission path and having transmission paths that are oblique to each other in plan view. A monitoring device that detects and monitors an intruder, and includes a position detection unit that detects a passing position of the intruder based on the interception of the diagonal warning line by the intruder.
Here, the transmission paths that are oblique to each other in plan view refer to a state in which the detection waves (warning lines) are not parallel to each other in plan view.
　この構成によれば、侵入者による少なくとも２本の斜めの警戒ラインの遮断、つまり警戒ラインが斜めであることから警戒領域の侵入位置に応じて変化する警戒ラインの遮断の時間差に基づいて、侵入者の通過位置を検出するので、簡単な構成かつ低コストで、侵入者の通過位置を容易に検出することができる。 According to this configuration, at least two diagonal warning lines are blocked by an intruder, that is, based on the time difference of the warning line cutoff that changes according to the intrusion position of the warning area because the warning line is diagonal. Since the passing position of the intruder is detected, the passing position of the intruder can be easily detected with a simple configuration and low cost.
　好ましくは、前記対向式警戒ライン遮断検知センサは、２組のトランスミッターおよびレシーバーが警戒領域の長手方向の両端に設置され、この警戒領域の一方端に、それぞれ各組のトランスミッターまたはレシーバーの一方が前記長手方向と直交する方向に離間して配置され、他方端に、各組の他方が互いに近接して配置されて、２本の斜めの警戒ラインが形成されている。したがって、侵入者による２本の斜めの警戒ラインの遮断の時間差を検出することにより、簡単な構成かつ低コストで、侵入者の通過位置を容易に検出することができる。 Preferably, the opposed warning line cutoff detection sensor has two sets of transmitters and receivers installed at both ends in the longitudinal direction of the warning area, and one end of each of the sets of transmitters and receivers is connected to the one end of the warning area. Two diagonal warning lines are formed with the other end of each set arranged close to each other at the other end, spaced apart in a direction perpendicular to the longitudinal direction. Therefore, by detecting the time difference between the interception of the two diagonal warning lines by the intruder, the passing position of the intruder can be easily detected with a simple configuration and low cost.
　好ましくは、前記対向式警戒ライン遮断検知センサは、４組のトランスミッターおよびレシーバーが、警戒領域の長手方向の両端に設置されて、この警戒領域の両端に、それぞれ各組のトランスミッターまたはレシーバーが前記長手方向と直交する方向の各端部に配置されて、前記４本の警戒ラインは、側面視で略水平の伝送路をもち、その２本の警戒ラインが平面視で前記長手方向に平行の伝送路をもち、他の２本の警戒ラインが平面視で互いに警戒領域の略中央で交差するように斜めの伝送路をもつように形成されている。したがって、２本の平行の警戒ラインの遮断と２本の斜めの警戒ラインの遮断の時間差を検出することにより、侵入者の通過位置をより正確かつ迅速に検出することができる。 Preferably, in the opposed warning line cutoff detection sensor, four sets of transmitters and receivers are installed at both ends in the longitudinal direction of the warning area, and each pair of transmitters or receivers is provided at the both ends of the warning area. Arranged at each end in a direction orthogonal to the direction, the four warning lines have a substantially horizontal transmission line in a side view, and the two warning lines are parallel to the longitudinal direction in a plan view. It has a road and is formed so as to have an oblique transmission line so that the other two warning lines cross each other at the approximate center of the warning area in plan view. Therefore, the passage position of the intruder can be detected more accurately and quickly by detecting the time difference between the interruption of the two parallel warning lines and the two oblique warning lines.
　好ましくは、警戒領域を撮像する監視カメラが設けられ、前記監視カメラが前記検出された侵入者の通過位置に振り向け可能に設定されている。また、前記位置検出部による検出結果に基づいて、前記監視カメラを侵入者の通過位置に振り向けるための通過位置情報信号を出力する。したがって、侵入者の位置検出に基づいて容易に侵入者を映像で捉えることができる。 Preferably, a monitoring camera for imaging a warning area is provided, and the monitoring camera is set to be able to be directed to the detected passing position of the intruder. Moreover, based on the detection result by the position detection unit, a passing position information signal for turning the surveillance camera to the passing position of the intruder is output. Therefore, the intruder can be easily captured by video based on the position detection of the intruder.
　好ましくは、複数の警戒領域に、単一の監視カメラが設けられている。したがって、単一の監視カメラで侵入者の位置検出に基づく監視が可能となり、装置の低コスト化を図ることができる。 Preferably, a single surveillance camera is provided in a plurality of alert areas. Therefore, monitoring based on the position detection of an intruder can be performed with a single monitoring camera, and the cost of the apparatus can be reduced.
　本発明では、少なくとも２本の警戒ラインが斜めであることから警戒領域の侵入位置に応じて変化する警戒ラインの遮断の時間差に基づいて、侵入者の通過位置を検出するので、簡単な構成かつ低コストで、侵入者の通過位置を容易に検出することができる。 In the present invention, since at least two warning lines are diagonal, the passing position of the intruder is detected based on the time difference of the warning line interruption that changes according to the intrusion position of the warning area. The passing position of the intruder can be easily detected at low cost.
　請求の範囲および／または明細書および／または図面に開示された少なくとも２つの構成のどのような組合せも、本発明に含まれる。特に請求の範囲の各請求項の２つ以上のどのような組合せも、本発明に含まれる。 Any combination of at least two configurations disclosed in the claims and / or the specification and / or drawings is included in the present invention. In particular, any combination of two or more of each claim in a claim is included in the present invention.
　本発明は、添付の図面を参考にした以下の好適な実施形態の説明から、より明瞭に理解されるであろう。しかしながら、実施形態および図面は単なる図示および説明のためのものであり、この発明の範囲を定めるために利用されるべきものではない。この発明の範囲は添付の請求の範囲によって定まる。添付図面において、複数の図面における同一の部品符号は同一部分を示す。
本発明の第１実施形態に係る位置検出部付き監視装置を示す構成図である。 図１の監視装置の動作を示すフローチャートである。 第２実施形態の位置検出部付き監視装置を示す構成図である。 第３実施形態の位置検出部付き監視装置を示す構成図である。 図４の位置検出部付き監視装置の一例の動作を示すフローチャートである。 図４の位置検出部付き監視装置の他例の動作を示すフローチャートである。 The present invention will be understood more clearly from the following description of preferred embodiments with reference to the accompanying drawings. However, the embodiments and drawings are for illustration and description only and should not be used to define the scope of the present invention. The scope of the invention is defined by the appended claims. In the accompanying drawings, the same component symbols in a plurality of drawings indicate the same parts.
It is a block diagram which shows the monitoring apparatus with a position detection part which concerns on 1st Embodiment of this invention. It is a flowchart which shows operation | movement of the monitoring apparatus of FIG. It is a block diagram which shows the monitoring apparatus with a position detection part of 2nd Embodiment. It is a block diagram which shows the monitoring apparatus with a position detection part of 3rd Embodiment. It is a flowchart which shows operation | movement of an example of the monitoring apparatus with a position detection part of FIG. It is a flowchart which shows operation | movement of the other example of the monitoring apparatus with a position detection part of FIG.
　以下、本発明の実施形態を図面にしたがって説明する。図１は本発明の第１実施形態に係る位置検出部付き監視装置１を示す構成図である。この監視装置１は、例えば平面視で細長い警戒領域（区間）Ａの長手方向、つまり侵入（進入）方向ｙに直交する方向ｘの両端に設けられて、ｙ方向に延びる一対のセンサ設置場所４（４Ａ、４Ｂ）にそれぞれ配置された、赤外線のような投光ビームの２本の検知波Ｓ１、Ｓ２を投光し受光する２組のトランスミッターＴ１、レシーバーＲ１およびトランスミッターＴ２、レシーバーＲ２からなる対向式警戒ライン遮断検知センサ２と、侵入者（人体）Ｈの通過位置に振り向け可能に設定されて、警戒領域Ａを撮像する監視カメラ３と、侵入者Ｈを検知し、その通過位置を検出する制御を行う制御部５とを備えている。対向式警戒ライン遮断検知センサ２と制御部５とにより侵入検知ユニットＵを構成する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram illustrating a monitoring device 1 with a position detection unit according to a first embodiment of the present invention. The monitoring device 1 is provided with a pair of sensor installation locations 4 extending in the y direction, for example, provided at both ends of the longitudinal direction of the elongated warning area (section) A in a plan view, that is, in the direction x orthogonal to the intrusion (entry) direction y. (4A, 4B) arranged opposite to each other, consisting of two sets of transmitter T1, receiver R1, transmitter T2, and receiver R2 that project and receive two detection waves S1 and S2 of a projection beam such as infrared rays. Type surveillance line blocking detection sensor 2 and surveillance camera 3 which is set so as to be able to be directed to the passing position of intruder (human body) H, and detects intruder H and detects the passing position. And a control unit 5 that performs control. The intrusion detection unit U is configured by the opposed warning line cutoff detection sensor 2 and the control unit 5.
　前記監視装置１は、右端のセンサ設置場所４Ａにおけるｙ方向の略中央部４Ａ０に互いに近接して対向式警戒ライン遮断検知センサ２の２つのトランスミッターＴ１、Ｔ２が、左端のセンサ設置場所４Ｂにおけるｙ方向の上端（奥）部４Ｂ１と下端（手前）部４Ｂ２に離間して、それぞれトランスミッターＴ１、Ｔ２からの２本の検知波を受光するレシーバーＲ１、Ｒ２が相対向するように配置されている。この２本の検知波Ｓ１、Ｓ２が警戒ラインＳを形成する。２本の警戒ラインＳ１、Ｓ２は、側面視で略水平の伝送路をもち、かつ平面視でそれぞれセンサ設置場所４Ａの略中央部４Ａ０とセンサ設置場所４Ｂの両端部４Ｂ１、４Ｂ２との間をｙ方向に対して角度θａ（ｘ方向に対して角度π－θａ）、角度θｂ（ｘ方向に対して角度π－θｂ）をなす（斜めの）伝送路をもつ。この例では、θａ＝θｂ＝θとする。前記側面視で略水平の伝送路には、若干傾いた伝送路も含まれ、人体Ｈが検出できる範囲に検知波が存在すればよい。 In the monitoring device 1, the two transmitters T1 and T2 of the opposed warning line cutoff detection sensor 2 are close to each other in the y-direction substantially central part 4A0 in the rightmost sensor installation location 4A, and the y in the leftmost sensor installation location 4B. The receivers R1 and R2 that receive the two detection waves from the transmitters T1 and T2, respectively, are arranged so as to be spaced apart from each other in the upper end (back) portion 4B1 and the lower end (front) portion 4B2. These two detection waves S1 and S2 form a warning line S. The two warning lines S1 and S2 have a substantially horizontal transmission line in a side view, and between a substantially central portion 4A0 of the sensor installation location 4A and both end portions 4B1 and 4B2 of the sensor installation location 4B in a plan view. It has a transmission line that forms an angle θa with respect to the y direction (angle π−θa with respect to the x direction) and an angle θb (angle π−θb with respect to the x direction). In this example, θa = θb = θ. The substantially horizontal transmission line in the side view includes a slightly inclined transmission line, and it is sufficient that the detection wave exists within a range where the human body H can be detected.
　なお、センサ設置場所４Ａの略中央部４Ａ０に互いに近接してレシーバーＲ１、Ｒ２を、センサ設置場所４Ｂの上端（奥）部４Ｂ１と下端（手前）部４Ｂ２に離間してトランスミッターＴ１、Ｔ２をそれぞれ相対向させて配置してもよいし、いずれか一組のトランスミッターとレシーバーを互いに入れ替えて配置してもよい。また、センサ設置場所４Ａの上下端部に離間してトランスミッターまたはレシーバーの一方、センサ設置場所４Ｂの略中央部に互いに近接して他方を配置してもよい。 It should be noted that the receivers R1 and R2 are located close to each other at a substantially central portion 4A0 of the sensor installation location 4A, and the transmitters T1 and T2 are separated from the upper end (back) portion 4B1 and the lower end (front) portion 4B2 of the sensor installation location 4B. You may arrange | position so that it may mutually oppose, and you may arrange | position one set of transmitters and receivers mutually. Alternatively, one of the transmitter and the receiver may be spaced apart from the upper and lower ends of the sensor installation location 4A, and the other may be disposed close to the approximate center of the sensor installation location 4B.
　前記制御部５は、装置全体を制御するとともに、侵入検知部６、位置検出部７、警報出力部８、カメラ操作用出力部９およびメモリ１０を備えている。前記侵入検知部６は、トランスミッターＴから投光されてレシーバーＲで受光する検知波が、侵入による警戒ラインＳ（伝送路）の遮断によって光量が変化して所定基準レベルを下回る出力レベルのとき、侵入者Ｈを検知する。 The control unit 5 controls the entire apparatus and includes an intrusion detection unit 6, a position detection unit 7, an alarm output unit 8, a camera operation output unit 9, and a memory 10. The intrusion detection unit 6 emits light from the transmitter T and is received by the receiver R when the detected light level changes below the predetermined reference level due to change in the amount of light due to interruption of the warning line S (transmission path) due to intrusion. Intruder H is detected.
　前記位置検出部７は、侵入検知された侵入者Ｈによる斜めの警戒ラインＳの遮断に基づいて、侵入者Ｈの通過位置を検出する。前記警報出力部８は、侵入者Ｈの通過を検出したとき、警備システムへの通報や、音声や点灯表示などによる警報を発するための検出信号を出力する。前記カメラ操作用出力部９は、侵入者Ｈの通過位置を検出したとき、監視カメラ３を起動させてその略水平および垂直角度などをリモートコントロールで操作して、前記検出された侵入者Ｈの通過位置に自動的に振り向けるための通過位置情報信号を出力する。前記メモリ１０は、警戒ラインＳの角度や侵入者Ｈの検出位置など各種データを記憶する。 The position detection unit 7 detects the passing position of the intruder H based on the interception of the diagonal warning line S by the intruder H detected to be intruded. When the alarm output unit 8 detects the passage of the intruder H, the alarm output unit 8 outputs a detection signal for issuing a warning by reporting to the security system or by voice or lighting display. When the intruder H's passing position is detected, the camera operation output unit 9 activates the surveillance camera 3 and operates its horizontal and vertical angles with a remote control to detect the intruder H's detected position. A passing position information signal for automatically turning to the passing position is output. The memory 10 stores various data such as the angle of the warning line S and the detection position of the intruder H.
　以下、前記位置検出部７について詳細に説明する。まず、警戒領域Ａのｘ方向の警戒距離Ｌ（ｍ）と、ｙ方向の幅Ｗ（ｍ）とから、斜めの警戒ラインＳ１およびＳ２がそれぞれｙ方向に対してなす角度θａ＝θｂ＝θ（°）が予め得られる。警戒距離Ｌは、装置設置時に設定スイッチ等で選択されるが、トランスミッターとレシーバーの光軸調整時に角度センサ等からの角度情報θａ、θｂ（°）に基づく演算により得てもよい。
　θ（°）＝ｔａｎ－１（Ｌ／（Ｗ／２）） Hereinafter, the position detector 7 will be described in detail. First, the angle θa = θb = θ () formed by the oblique warning lines S1 and S2 with respect to the y direction from the warning distance L (m) in the x direction of the warning area A and the width W (m) in the y direction. °) is obtained in advance. The warning distance L is selected by a setting switch or the like when the apparatus is installed, but may be obtained by calculation based on angle information θa and θb (°) from the angle sensor or the like when adjusting the optical axes of the transmitter and the receiver.
θ (°) = tan −1 (L / (W / 2))
　侵入者Ｈの通過位置を演算するための、侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）は、警戒ラインＳ１、Ｓ２を遮断したときに検出されるもので、例えば、レシーバーＲ１が受光する警戒ラインＳ１の伝送路の予め設定された赤外線受光幅ｗｂ（ｍ）および侵入者Ｈの厚み（人体の平均厚み）ｗｈ（ｍ）と、侵入者Ｈの警戒ラインＳ１における遮断時間ｔｓ（ｓｅｃ）とに基づいて、侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）が算出される。
　ｖ（ｍ／ｓｅｃ）＝（ｗｈ（ｍ）－ｗｂ（ｍ））／ｔｓ（ｓｅｃ） The moving speed v (m / sec) of the intruder H for calculating the passing position of the intruder H is detected when the warning lines S1 and S2 are interrupted. For example, the warning received by the receiver R1 Infrared light receiving width wb (m) and intruder H thickness (average human body thickness) wh (m) set on the transmission line of line S1, and blocking time ts (sec) on intruder H alert line S1 Based on the above, the moving speed v (m / sec) of the intruder H is calculated.
v (m / sec) = (wh (m) -wb (m)) / ts (sec)
　そして、警戒ラインＳ１の遮断から警戒ラインＳ２の遮断までの時間ｔ（ｓｅｃ）と、前記移動速度ｖ（ｍ／ｓｅｃ）とから、遮断された警戒ラインＳ１と警戒ラインＳ２の間の距離Ｙ（ｍ）が算出される。時間ｔは、斜めの警戒ラインＳ１と警戒ラインＳ２における遮断の時間差であり、斜めの警戒ラインＳ１、Ｓ２間の距離Ｙ（ｍ）は、警戒領域Ａにおけるｙ方向位置に対応するので、侵入者Ｈのｙ方向の検出位置が特定される。
　Ｙ（ｍ）＝ｖ（ｍ／ｓｅｃ）×ｔ（ｓｅｃ） Then, from the time t (sec) from the interruption of the warning line S1 to the interruption of the warning line S2 and the moving speed v (m / sec), the distance Y (between the interrupted warning line S1 and the warning line S2 ( m) is calculated. The time t is the time difference between the diagonal warning lines S1 and S2, and the distance Y (m) between the diagonal warning lines S1 and S2 corresponds to the y-direction position in the warning area A. The detection position of H in the y direction is specified.
Y (m) = v (m / sec) × t (sec)
　前記した距離Ｙ（ｍ）と角度θ（°）とから、警戒領域Ａの右端のセンサ設置場所４Ａの側縁から侵入者Ｈ位置までのｘ方向の距離Ｘ（ｍ）が算出される。
　Ｘ（ｍ）＝（Ｙ（ｍ）／２）×ｔａｎθ（°）
　なお、警戒領域Ａの左端のセンサ設置場所４Ｂの側縁から侵入者Ｈ位置までのｘ方向の距離はＬ－Ｘ（ｍ）である。 From the distance Y (m) and the angle θ (°), the distance X (m) in the x direction from the side edge of the sensor installation location 4A at the right end of the alert area A to the intruder H position is calculated.
X (m) = (Y (m) / 2) × tan θ (°)
Note that the distance in the x direction from the side edge of the sensor installation location 4B at the left end of the alert area A to the intruder H position is LX (m).
　図２は、監視装置１の動作を示すフローチャートである。
　まず、ｘ方向の警戒距離Ｌ（ｍ）とｙ方向の幅Ｗ（ｍ）とから得られた警戒ラインＳ１、Ｓ２のｙ方向に対する角度θ（°）が、予めメモリ１０に記憶される（ステップＳ１）。つぎに、侵入者Ｈが警戒領域Ａに侵入し、ｙ方向に警戒ラインＳ１を遮断したとき、その遮断時間に基づいて、侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）が算出される（ステップＳ２）。 FIG. 2 is a flowchart showing the operation of the monitoring device 1.
First, the angle θ (°) with respect to the y direction of the warning lines S1 and S2 obtained from the warning distance L (m) in the x direction and the width W (m) in the y direction is stored in the memory 10 in advance (step). S1). Next, when the intruder H enters the alert area A and interrupts the alert line S1 in the y direction, the moving speed v (m / sec) of the intruder H is calculated based on the intercept time (step). S2).
　侵入者Ｈのｙ方向移動に伴って、警戒ラインＳ１の遮断開始から警戒ラインＳ２の遮断開始までの時間ｔ（ｓｅｃ）と、前記侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）とから、遮断された警戒ラインＳ１と警戒ラインＳ２間のｙ方向の距離Ｙ（ｍ）が算出される（ステップＳ３）。そして、距離Ｙ（ｍ）と角度θ（°）とから、警戒領域Ａのセンサ設置場所４Ａの側縁から侵入者Ｈ位置までのｘ方向の距離Ｘ（ｍ）が算出される（ステップＳ４）。最後に、侵入者Ｈの距離Ｘ、Ｙ（ｍ）によるｘ、ｙ方向の位置検出に基づく警報が出力され、当該ｘ、ｙ方向の検出位置が出力される（ステップＳ５）。 As the intruder H moves in the y direction, the intruder H is cut off from the time t (sec) from the start of the warning line S1 to the start of the warning line S2 and the moving speed v (m / sec) of the intruder H. A distance Y (m) in the y direction between the warning line S1 and the warning line S2 is calculated (step S3). Then, a distance X (m) in the x direction from the side edge of the sensor installation location 4A in the alert area A to the intruder H position is calculated from the distance Y (m) and the angle θ (°) (step S4). . Finally, an alarm based on the position detection in the x and y directions based on the distances X and Y (m) of the intruder H is output, and the detected positions in the x and y directions are output (step S5).
　これにより、警戒ラインＳ１、Ｓ２が斜めであることから警戒領域Ａの侵入位置に応じて変化する警戒ラインＳ１、Ｓ２の遮断の時間差に基づいて、侵入者Ｈの通過位置を検出するので、簡単な構成かつ低コストで、侵入者Ｈの通過位置を容易に検出することができる。 As a result, since the warning lines S1 and S2 are diagonal, the passing position of the intruder H is detected based on the time difference between the interruption of the warning lines S1 and S2 that changes according to the intrusion position of the warning area A. The passing position of the intruder H can be easily detected with a simple configuration and low cost.
　図３は、第２実施形態の位置検出部付き監視装置１Ａを示す構成図である。第１実施形態では、対向式警戒ライン遮断検知センサ２は、２本の検知波Ｓ１、Ｓ２を投光し受光する２組のトランスミッターＴ１、Ｔ２およびレシーバーＲ１、Ｒ２をそれぞれ相対向させて配置していたが、第２実施形態では、対向式警戒ライン遮断検知センサ２は、検知波の伝送路を広げて投光する単一のトランスミッターＴと、その検知波Ｓを受光する２つのレシーバーＲ１、Ｒ２とをそれぞれ相対向させて配置することで、実質的に警戒ラインＳ１、Ｓ２を構成している。 FIG. 3 is a configuration diagram illustrating a monitoring device 1A with a position detection unit according to the second embodiment. In the first embodiment, the opposing warning line cutoff detection sensor 2 arranges two sets of transmitters T1 and T2 and receivers R1 and R2 that project and receive two detection waves S1 and S2 so as to face each other. However, in the second embodiment, the opposing warning line cutoff detection sensor 2 includes a single transmitter T that projects light by expanding the transmission path of the detection wave, and two receivers R1 that receive the detection wave S, By arranging R2 so as to face each other, warning lines S1 and S2 are substantially configured.
　この場合、警戒領域Ａのｘ方向の警戒距離Ｌ（ｍ）と、ｙ方向の幅Ｗ（ｍ）とから、斜めの警戒ラインＳ１およびＳ２がなす角度θ（°）が求められる。
　θ（°）＝２・ｔａｎ－１（（Ｗ／２）／Ｌ）
　第１実施形態と同様に、侵入者の移動速度ｖ（ｍ／ｓｅｃ）と、遮断された警戒ラインＳ１と警戒ラインＳ２間の距離Ｙ（ｍ）とが算出された後に、警戒領域Ａの右端のセンサ設置場所４Ａの側縁から侵入者Ｈ位置までのｘ方向の距離Ｘ（ｍ）が次式により算出される。その他の構成は、第１実施形態と同様である。
　Ｘ（ｍ）＝（Ｙ（ｍ）／２）÷ｔａｎ（θ／２）（°） In this case, the angle θ (°) formed by the diagonal warning lines S1 and S2 is determined from the warning distance L (m) in the x direction of the warning area A and the width W (m) in the y direction.
θ (°) = 2 · tan −1 ((W / 2) / L)
Similarly to the first embodiment, the right edge of the warning area A is calculated after the moving speed v (m / sec) of the intruder and the distance Y (m) between the blocked warning line S1 and the warning line S2 are calculated. The distance X (m) in the x direction from the side edge of the sensor installation location 4A to the intruder H position is calculated by the following equation. Other configurations are the same as those in the first embodiment.
X (m) = (Y (m) / 2) / tan (θ / 2) (°)
　第２実施形態は、単一のトランスミッターＴから２つのレシーバーＲ１、Ｒ２への赤外線ビームの伝送路の広がりを利用するもので、侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）の演算には、単一のトランスミッターＴから投光されて伝送路が広がった赤外線ビームのうち予め設定されたレシーバーＲ１、Ｒ２の受光幅である警戒ラインＳ１、Ｓ２の赤外線受光幅ｗｂ（ｍ）が用いられる。 In the second embodiment, the spread of the transmission path of the infrared beam from a single transmitter T to the two receivers R1 and R2 is used. For calculating the moving speed v (m / sec) of the intruder H, Of the infrared beam that has been projected from a single transmitter T and whose transmission path has been expanded, the infrared light receiving width wb (m) of the warning lines S1 and S2 that are preset light receiving widths of the receivers R1 and R2 are used.
　これにより、単一のトランスミッターＴと２つのレシーバーＲ１、Ｒ２とを相対向させて配置し、侵入者Ｈによる斜めの警戒ラインＳ１、Ｓ２の遮断の時間差を検出することにより、簡単な構成かつ低コストで、侵入者Ｈの通過位置を容易に検出することができる。 As a result, a single transmitter T and two receivers R1 and R2 are arranged opposite to each other, and by detecting the time difference between the interception lines S1 and S2 by the intruder H, a simple configuration and low The passing position of the intruder H can be easily detected at a cost.
　図４は、第３実施形態の位置検出部付き監視装置１Ｂを示す構成図である。第３実施形態は、第１実施形態と異なり、対向式警戒ライン遮断検知センサ２は４本の警戒ラインＳ１～Ｓ４を構成し、それぞれ投光し受光する４組のトランスミッターＴ１～Ｔ４とレシーバーＲ１～Ｒ４とが、警戒領域Ａのｘ方向の両端に設けられてｙ方向に延びる一対のセンサ設置場所４（４Ａ、４Ｂ）にそれぞれ相対向して設置され、このセンサ設置場所４のｙ方向両端部にそれぞれ各組のトランスミッターまたはレシーバーが配置されている。 FIG. 4 is a configuration diagram illustrating a monitoring device 1B with a position detection unit according to the third embodiment. Unlike the first embodiment, the third embodiment is different from the first embodiment in that the opposing warning line cutoff detection sensor 2 constitutes four warning lines S1 to S4, and four sets of transmitters T1 to T4 and receivers R1 that project and receive light respectively. R4 are installed opposite to each other in a pair of sensor installation locations 4 (4A, 4B) provided at both ends in the x direction of the warning area A and extending in the y direction. Each set has its own set of transmitter or receiver.
　前記監視装置１Ｂは、トランスミッターＴ１が左端のセンサ設置場所４Ｂにおける上端（奥）部４Ｂ１に、レシーバーＲ１が右端のセンサ設置場所４Ａにおける上端（奥）部４Ａ１に配置されて警戒ラインＳ１に投受光し、トランスミッターＴ２が右端のセンサ設置場所４Ａにおける下端（手前）部４Ａ２に、レシーバーＲ２が左端のセンサ設置場所４Ｂにおける上端（奥）部４Ｂ１に配置されて警戒ラインＳ２に投受光し、トランスミッターＴ３が右端のセンサ設置場所４Ａにおける上端（奥）部４Ａ１に、レシーバーＲ３が左端のセンサ設置場所４Ｂにおける下端（手前）部４Ｂ２に配置されて警戒ラインＳ３に投受光し、トランスミッターＴ４が左端のセンサ設置場所４Ｂにおける下端（手前）部４Ｂ２に、レシーバーＲ４が右端のセンサ設置場所４Ａにおける下端（手前）部４Ａ２に配置されて警戒ラインＳ４に投受光する。この４本の警戒ラインＳ１～Ｓ４で警戒ラインＳを形成する。 In the monitoring device 1B, the transmitter T1 is disposed at the upper end (back) portion 4B1 of the leftmost sensor installation location 4B, and the receiver R1 is disposed at the upper end (backward) portion 4A1 of the rightmost sensor installation location 4A. The transmitter T2 is disposed at the lower end (front) portion 4A2 of the rightmost sensor installation location 4A, and the receiver R2 is disposed at the upper end (backward) portion 4B1 of the leftmost sensor installation location 4B. Is arranged at the upper end (back) portion 4A1 at the rightmost sensor installation location 4A, and the receiver R3 is arranged at the lower end (front side) portion 4B2 at the leftmost sensor installation location 4B to project and receive light on the alert line S3, and the transmitter T4 is the leftmost sensor. At the lower end (front side) 4B2 at the installation location 4B, the receiver R4 is located at the right end. For projecting light to alert line S4 is arranged at the lower end (front) portion 4A2 of capacitors location 4A. A warning line S is formed by these four warning lines S1 to S4.
　前記警戒ラインＳは、４本の警戒ラインＳ１～Ｓ４が側面視で略水平の伝送路をもち、その２本の警戒ラインＳ１、Ｓ４が平面視でx方向に平行の伝送路をもち、他の１本の警戒ラインＳ２が平面視でセンサ設置場所４Ａの下端（手前）部４Ａ２とセンサ設置場所４Ｂの上端（奥）部４Ｂ１との間をｙ方向に対して角度θｃ（ｘ方向に対して角度π－θｃ）をなす（斜めの）伝送路をもち、他の１本の警戒ラインＳ３が平面視でセンサ設置場所４Ａの上端（奥）部４Ａ１とセンサ設置場所４Ｂの下端（手前）部４Ｂ２との間をｙ方向に対して角度θｄ（ｘ方向に対して角度π－θｄ）をなす（斜めの）伝送路をもって、２本の警戒ラインＳ２、Ｓ３は互いに警戒領域Ａの略中央ＡＯで交差する。この例では、θｃ＝θｄ＝θとする。 The warning line S includes four warning lines S1 to S4 having a substantially horizontal transmission line in a side view, and two warning lines S1 and S4 having a transmission line parallel to the x direction in a plan view. Is an angle θc (in relation to the x direction) with respect to the y direction between the lower end (front side) 4A2 of the sensor installation location 4A and the upper end (back) portion 4B1 of the sensor installation location 4B in plan view. The other one of the warning lines S3 in plan view is the upper end (back) portion 4A1 of the sensor installation location 4A and the lower end (front side) of the sensor installation location 4B. The two warning lines S2 and S3 are substantially at the center of the warning area A with a transmission line that forms an angle θd with respect to the part 4B2 (angle π−θd with respect to the x direction) with respect to the y direction. Cross at AO. In this example, θc = θd = θ.
　なお、対向式警戒ライン遮断検知センサ２の４組のトランスミッターＴ１～Ｔ４とレシーバーＲ１～Ｒ４のうち、１組または２組以上のトランスミッターとレシーバーとをそれぞれ左右逆の位置に入れ替えて配置するようにしてもよい。 Of the four sets of transmitters T1 to T4 and receivers R1 to R4 of the opposed warning line cutoff detection sensor 2, one set or two or more sets of transmitters and receivers are arranged in the opposite positions. May be.
　以下、第３実施形態の位置検出部７について説明する。まず、警戒領域Ａのｘ方向の警戒距離Ｌ（ｍ）と、ｙ方向の幅Ｗ（ｍ）とから、斜めの警戒ラインＳ２およびＳ３がそれぞれｙ方向に対してなす角度θｃ＝θｄ＝θ（°）が求められる。
　θ（°）＝ｔａｎ－１（Ｌ／Ｗ） Hereinafter, the position detection unit 7 of the third embodiment will be described. First, the angle θc = θd = θ () formed by the oblique warning lines S2 and S3 with respect to the y direction from the warning distance L (m) in the x direction of the warning area A and the width W (m) in the y direction. °) is required.
θ (°) = tan −1 (L / W)
　侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）は、警戒ラインＳ１を遮断したときに検出される。上記と同様に、
　ｖ（ｍ／ｓｅｃ）＝（ｗｈ（ｍ）－ｗｂ（ｍ））／ｔｓ（ｓｅｃ） The moving speed v (m / sec) of the intruder H is detected when the warning line S1 is interrupted. As above,
v (m / sec) = (wh (m) -wb (m)) / ts (sec)
　そして、警戒ラインＳ１の遮断開始から警戒ラインＳ２の遮断開始までの時間ｔ１（ｓｅｃ）と、前記移動速度ｖ（ｍ／ｓｅｃ）とから、遮断された警戒ラインＳ１と警戒ラインＳ２の間のｙ方向の距離Ｙ１（ｍ）が算出される。
　Ｙ１（ｍ）＝ｖ（ｍ／ｓｅｃ）×ｔ１（ｓｅｃ）
　また、警戒ラインＳ２の遮断開始から警戒ラインＳ３の遮断開始までの時間ｔ２（ｓｅｃ）から、遮断された警戒ラインＳ２と警戒ラインＳ３の間のｙ方向の距離Ｙ２（ｍ）が算出される。
　Ｙ２（ｍ）＝ｖ（ｍ／ｓｅｃ）×ｔ２（ｓｅｃ）
　さらに、警戒ラインＳ３の遮断開始から警戒ラインＳ４の遮断開始までの時間ｔ３（ｓｅｃ）から、遮断された警戒ラインＳ３と警戒ラインＳ４の間のｙ方向の距離Ｙ３（ｍ）が算出される。
　Ｙ３（ｍ）＝ｖ（ｍ／ｓｅｃ）×ｔ３（ｓｅｃ）
　時間ｔ１、ｔ２、ｔ３は、斜めの警戒ラインＳ２、Ｓ３を含む警戒ラインにおける各遮断の時間差であり、斜めの警戒ラインＳ２、Ｓ３を含む各警戒ライン間の距離Ｙ１、Ｙ２、Ｙ３（ｍ）は、警戒領域Ａにおけるｙ方向位置に対応するので、侵入者Ｈのｙ方向の検出位置が特定される。 Then, from the time t1 (sec) from the start of the interruption of the warning line S1 to the start of the interruption of the warning line S2, and the moving speed v (m / sec), y between the interrupted warning line S1 and the warning line S2 A direction distance Y1 (m) is calculated.
Y1 (m) = v (m / sec) × t1 (sec)
Further, a distance Y2 (m) in the y direction between the interrupted alert line S2 and the alert line S3 is calculated from a time t2 (sec) from when the alert line S2 is interrupted to when the alert line S3 is interrupted.
Y2 (m) = v (m / sec) × t2 (sec)
Further, a distance Y3 (m) in the y direction between the interrupted alert line S3 and the alert line S4 is calculated from a time t3 (sec) from the commencement of the alert line S3 to the alert start of the alert line S4.
Y3 (m) = v (m / sec) × t3 (sec)
The times t1, t2, and t3 are the time differences of the interruptions in the warning lines including the diagonal warning lines S2 and S3, and the distances Y1, Y2, and Y3 (m) between the warning lines including the diagonal warning lines S2 and S3. Corresponds to the y-direction position in the alert area A, so that the detection position of the intruder H in the y-direction is specified.
　前記したｙ方向の距離Ｙ１、Ｙ２、Ｙ３（ｍ）と角度θ（°）とから、警戒領域Ａの左端のセンサ設置場所４Ｂの側縁から侵入者Ｈ位置までのｘ方向の距離Ｘ１、Ｘ２、Ｘ３（ｍ）がそれぞれ算出される。
　Ｘ１（ｍ）＝Ｙ１（ｍ）×ｔａｎθ（°）
　Ｘ２（ｍ）＝（Ｗ（ｍ）／２）×ｔａｎθ（°）－（Ｙ２（ｍ）／２）×ｔａｎθ（°）
　Ｘ３（ｍ）＝Ｙ３（ｍ）×ｔａｎθ（°）
　なお、警戒領域Ａのｘ方向中心線（中央位置）から侵入者Ｈ位置までのｘ方向の距離は、それぞれＬ／２－Ｘ１、Ｌ／２－Ｘ２、Ｌ／２－Ｘ３（ｍ）である。 The distances X1, X2 in the x direction from the side edge of the sensor installation location 4B at the left end of the warning area A to the intruder H position from the distances Y1, Y2, Y3 (m) in the y direction and the angle θ (°). , X3 (m) are respectively calculated.
X1 (m) = Y1 (m) × tan θ (°)
X2 (m) = (W (m) / 2) × tan θ (°) − (Y2 (m) / 2) × tan θ (°)
X3 (m) = Y3 (m) × tan θ (°)
The distances in the x direction from the x-direction center line (center position) of the alert area A to the intruder H position are L / 2-X1, L / 2-X2, and L / 2-X3 (m), respectively. .
　図５は、第３実施形態に係る監視装置１Ｂの一例の動作を示すフローチャートである。まず、ｘ方向の警戒距離Ｌ（ｍ）とｙ方向の幅Ｗ（ｍ）とから得られた警戒ラインＳ２、Ｓ３の角度θ（°）が、予めメモリ１０に記憶される（ステップＳ１１）。そして、侵入者Ｈが警戒領域Ａに侵入し、ｙ方向に警戒ラインＳ１を遮断したとき、その遮断時間に基づいて、侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）が算出される（ステップＳ１２）。 FIG. 5 is a flowchart showing an example of the operation of the monitoring device 1B according to the third embodiment. First, the angle θ (°) of the alert lines S2 and S3 obtained from the alert distance L (m) in the x direction and the width W (m) in the y direction is stored in the memory 10 in advance (step S11). Then, when the intruder H enters the alert area A and interrupts the alert line S1 in the y direction, the moving speed v (m / sec) of the intruder H is calculated based on the intercept time (step S12). ).
　つぎに、侵入者Ｈのｙ方向移動に伴って、警戒ラインＳ１の遮断開始から警戒ラインＳ２の遮断開始までの時間ｔ１（ｓｅｃ）と、侵入者の移動速度ｖ（ｍ／ｓｅｃ）とから、遮断された警戒ラインＳ１と警戒ラインＳ２間の距離Ｙ１（ｍ）が算出される（ステップＳ１３）。このとき、同様に、警戒ラインＳ２の遮断開始から警戒ラインＳ３の遮断開始までの時間ｔ２（ｓｅｃ）から、遮断された警戒ラインＳ２と警戒ラインＳ３の間の距離Ｙ２（ｍ）が、警戒ラインＳ３の遮断開始から警戒ラインＳ４の遮断開始までの時間ｔ３（ｓｅｃ）から、遮断された警戒ラインＳ３と警戒ラインＳ４の間の距離Ｙ３（ｍ）が、それぞれ算出される。 Next, with the movement of the intruder H in the y direction, from the time t1 (sec) from the start of blocking the warning line S1 to the start of blocking the warning line S2, and the moving speed v (m / sec) of the intruder, A distance Y1 (m) between the blocked alert line S1 and the alert line S2 is calculated (step S13). At this time, similarly, the distance Y2 (m) between the interrupted alert line S2 and the alert line S3 from the time t2 (sec) from the commencement of the alert line S2 to the alert start of the alert line S3 is the alert line. From the time t3 (sec) from the start of blocking of S3 to the start of blocking of the warning line S4, the distance Y3 (m) between the blocked warning line S3 and the warning line S4 is calculated.
　そして、距離Ｙ１、Ｙ２、Ｙ３（ｍ）と角度θ（°）とから、センサ設置場所４Ａの側縁から侵入者Ｈ位置までのｘ方向の距離Ｘ１、Ｘ２、Ｘ３（ｍ）がそれぞれ算出される（ステップＳ１４）。最後に、侵入者Ｈの距離Ｘ、Ｙ（ｍ）によるｘ、ｙ方向の位置検出に基づく警報が出力され、当該ｘ、ｙ方向の検出位置が出力される（ステップＳ１５）。 Then, distances X1, X2, and X3 (m) in the x direction from the side edge of the sensor installation location 4A to the intruder H position are calculated from the distances Y1, Y2, and Y3 (m) and the angle θ (°). (Step S14). Finally, an alarm based on the position detection in the x and y directions based on the distances X and Y (m) of the intruder H is output, and the detected positions in the x and y directions are output (step S15).
　これにより、２本の平行の警戒ラインＳ１、Ｓ４の遮断と２本の斜めの警戒ラインＳ２、Ｓ３の遮断の時間差を検出することにより、侵入者Ｈの通過位置をより正確かつ迅速に検出することができる。 Thereby, the passage position of the intruder H is detected more accurately and quickly by detecting the time difference between the interruption of the two parallel warning lines S1 and S4 and the interruption of the two oblique warning lines S2 and S3. be able to.
　しかも、警戒ラインＳ２とＳ３を交差させているので、警戒ラインの角度が大きくなって、遮断時間が長くなるから分解能を高くできる。また、警戒ラインＳ２、Ｓ３の交差により、侵入者Ｈが侵入して警戒ラインＳ１からＳ２へ遮断するとき警戒領域Ａの左側を通過していること、侵入者Ｈが警戒ラインＳ１からＳ３へ遮断するとき警戒領域Ａの右側を通過していることを、警戒ラインＳ２またはＳ３の遮断時に判別できるので、侵入者Ｈの正確な位置検出前に、侵入者Ｈの概略の通過位置を検出できる。また、警戒ラインＳ２またはＳ３の遮断時に直ちに、監視カメラ３を侵入者Ｈが通過している警戒領域Ａの右側または左側の位置に振り向けることもできるので、侵入者Ｈの正確な位置検出前に、迅速に侵入者Ｈの概略の通過位置に監視カメラ３を振り向けるための通過位置情報信号を出力することができる。 Moreover, since the warning lines S2 and S3 are crossed, the angle of the warning line is increased and the blocking time is increased, so that the resolution can be increased. In addition, when the intruder H enters and shuts off from the alert line S1 to S2 due to the intersection of the alert lines S2 and S3, the intruder H blocks from the alert line S1 to S3. Since the fact that the vehicle is passing the right side of the alert area A can be determined when the alert line S2 or S3 is interrupted, the approximate passing position of the intruder H can be detected before the intruder H is accurately detected. In addition, immediately after the warning line S2 or S3 is interrupted, the surveillance camera 3 can be turned to the right or left side of the warning area A through which the intruder H passes, so that before the intruder H accurately detects the position. In addition, it is possible to quickly output a passing position information signal for directing the surveillance camera 3 to the approximate passing position of the intruder H.
　つぎに、第３実施形態に係る監視装置１Ｂの他例について説明する。前記した侵入者の移動速度ｖ（ｍ／ｓｅｃ）を、警戒ラインＳ１を遮断したときに検出するのと異なり、この他例は、侵入者の移動速度ｖ（ｍ／ｓｅｃ）を、警戒ラインＳ１の遮断開始から警戒ラインＳ４の遮断開始までの時間ｔ（ｓｅｃ）もしくは、警戒ラインＳ１の遮断開始から警戒ラインＳ２の遮断開始までの時間ｔ１（ｓｅｃ）、警戒ラインＳ２の遮断開始から警戒ラインＳ３の遮断開始までの時間ｔ２（ｓｅｃ）、および警戒ラインＳ３の遮断開始から警戒ラインＳ４の遮断開始までの時間ｔ３（ｓｅｃ）の合計時間ｔ（ｓｅｃ）＝ｔ１＋ｔ２＋ｔ３（ｓｅｃ）と、警戒領域Ａのｙ方向の幅Ｗ（ｍ）とから求めている。その他の構成は、前記監視装置１Ｂの一例と同様である。
　ｖ（ｍ／ｓｅｃ）＝Ｗ（ｍ）／ｔ（ｓｅｃ） Next, another example of the monitoring device 1B according to the third embodiment will be described. Unlike the case where the moving speed v (m / sec) of the intruder is detected when the warning line S1 is cut off, the other example is that the moving speed v (m / sec) of the intruder is set to the warning line S1. The time t (sec) from the start of shutting off the alert line S4 to the start of shutting off the alert line S1, or the time t1 (sec) from the start of shutting off the alert line S1 to the start of shutting off the alert line S2, the alert line S3 from the start of shutting off the alert line S2 The time t2 (sec) until the start of shutting off of the alarm line S3, and the total time t3 (sec) from the start of shutting down the alert line S3 to the start of shutting off the alert line S4 t (sec) = t1 + t2 + t3 (sec) It is obtained from the width W (m) in the y direction. Other configurations are the same as those of the monitoring apparatus 1B.
v (m / sec) = W (m) / t (sec)
　図６は、第３実施形態の監視装置１Ｂの他例の動作を示すフローチャートである。まず、ｘ方向の警戒距離Ｌ（ｍ）とｙ方向の幅Ｗ（ｍ）とから得られた警戒ラインＳ２、Ｓ３の角度θ（°）が、予めメモリ１０に記憶される（ステップＳ２１）。つぎに、侵入者Ｈが警戒領域Ａに侵入し、ｙ方向に移動するとき、警戒ラインＳ１の遮断開始から警戒ラインＳ４の遮断開始までの時間ｔ（ｓｅｃ）もしくは、警戒ラインＳ１の遮断開始から警戒ラインＳ２の遮断開始までの時間ｔ１（ｓｅｃ）と、警戒ラインＳ２の遮断開始から警戒ラインＳ３の遮断開始までの時間ｔ２（ｓｅｃ）と、警戒ラインＳ３の遮断開始から警戒ラインＳ４の遮断開始までの時間ｔ３（ｓｅｃ）とが算出される（ステップＳ２２）。 FIG. 6 is a flowchart showing the operation of another example of the monitoring device 1B of the third embodiment. First, the angle θ (°) of the warning lines S2 and S3 obtained from the warning distance L (m) in the x direction and the width W (m) in the y direction is stored in the memory 10 in advance (step S21). Next, when the intruder H enters the alert area A and moves in the y direction, the time t (sec) from the start of shutting off the alert line S1 to the start of shutting off the alert line S4 or the start of shutting off the alert line S1. Time t1 (sec) until the warning line S2 starts to be cut off, time t2 (sec) from the start of the warning line S2 to the start of warning line S3, and the start of the warning line S3 from the start of interruption of the warning line S4 Until the time t3 (sec) is calculated (step S22).
　つぎに、侵入者の移動速度ｖ（ｍ／ｓｅｃ）が、警戒ラインＳ１の遮断開始から警戒ラインＳ４の遮断開始までの時間ｔ（ｓｅｃ）もしくは、各警戒ラインＳ１、Ｓ２、Ｓ３を遮断する時間ｔ１、ｔ２、ｔ３（ｓｅｃ）の合計時間ｔ（ｓｅｃ）と、警戒領域Ａのｙ方向の幅Ｗ（ｍ）とから算出される（ステップＳ２３）。つぎに、時間ｔ１、ｔ２、ｔ３（ｓｅｃ）と、侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）とから、距離Ｙ１（ｍ）、距離Ｙ２（ｍ）、距離Ｙ３（ｍ）が算出される（ステップＳ２４）。 Next, the movement speed v (m / sec) of the intruder is the time t (sec) from the start of shutting down the alert line S1 to the start of shutting down the alert line S4, or the time during which the alert lines S1, S2, and S3 are shut off. It is calculated from the total time t (sec) of t1, t2, t3 (sec) and the width W (m) in the y direction of the alert area A (step S23). Next, the distance Y1 (m), the distance Y2 (m), and the distance Y3 (m) are calculated from the times t1, t2, and t3 (sec) and the moving speed v (m / sec) of the intruder H. (Step S24).
　そして、距離Ｙ１、Ｙ２、Ｙ３（ｍ）と角度θ（°）とから、センサ設置場所４Ａの側縁から侵入者Ｈ位置までのｘ方向の距離Ｘ１、Ｘ２、Ｘ３（ｍ）がそれぞれ算出される（ステップＳ２５）。最後に、侵入者Ｈの距離Ｘ、Ｙによるｘ、ｙ方向の位置検出に基づく警報が出力され、当該ｘ、ｙ方向の検出位置が出力される（ステップＳ２６）。 Then, distances X1, X2, and X3 (m) in the x direction from the side edge of the sensor installation location 4A to the intruder H position are calculated from the distances Y1, Y2, and Y3 (m) and the angle θ (°). (Step S25). Finally, an alarm based on the position detection in the x and y directions based on the distances X and Y of the intruder H is output, and the detected positions in the x and y directions are output (step S26).
　この他例では、前記合計時間ｔ（ｓｅｃ）と幅Ｗ（ｍ）とから侵入者Ｈの移動速度ｖ（ｍ／ｓｅｃ）を正確に得ることができる。侵入者Ｈの位置検出が警戒領域Ａを通り過ぎた後となるので、主として、警戒領域Ａを出た後の侵入者Ｈの監視に使用される。なお、移動速度ｖ（ｍ／ｓｅｃ）を、この合計時間ｔ（ｓｅｃ）と幅Ｗ（ｍ）に基づく演算と、第３実施形態における警戒ラインＳの１つの遮断時間に基づく演算とを併用して取得するようにしてもよい。 In this other example, the moving speed v (m / sec) of the intruder H can be accurately obtained from the total time t (sec) and the width W (m). Since the position detection of the intruder H passes after the warning area A, it is mainly used for monitoring the intruder H after leaving the warning area A. Note that the movement speed v (m / sec) is calculated by using the calculation based on the total time t (sec) and the width W (m) and the calculation based on one interruption time of the warning line S in the third embodiment. May be acquired.
　なお、上記各実施形態では、対向式警戒ライン遮断検知センサ２は、検知波として赤外線を使用しているが、レーザやマイクロウェーブなどライン状に警戒することを可能とするデバイスを使用してもよい。 In addition, in each said embodiment, although the opposing type | formula vigilance line interruption | blocking detection sensor 2 uses infrared rays as a detection wave, even if it uses the device which can be alerted in a line shape, such as a laser and a microwave. Good.
　なお、上記各実施形態では、単一の警戒領域Ａとしているが、ｘ方向に長い警戒距離に対してｘ方向に複数区間の警戒領域を設けた場合に適用してもよく、この場合、監視カメラ３を単一としてもよい。これにより、装置の低コスト化が図れる。 In each of the above embodiments, a single warning area A is used. However, the present invention may be applied to a case where a plurality of warning areas are provided in the x direction with respect to a long warning distance in the x direction. A single camera 3 may be used. Thereby, cost reduction of an apparatus can be achieved.
　また、対向式警戒ライン遮断検知センサ２を増設して、警戒ラインＳの数を増加させることにより、位置検出精度を向上させてもよい。この場合、側面視で対向式警戒ライン遮断検知センサ２を上下方向に多段にしてもよいし、高さ調節可能としてもよい。これにより、人体と小動物や鳥などとを容易に判別できる。 Further, the position detection accuracy may be improved by increasing the number of the warning lines S by adding the opposing type warning line cutoff detection sensor 2. In this case, the opposing warning line cutoff detection sensor 2 may be multistage in the vertical direction as viewed from the side, or the height may be adjustable. Thereby, a human body and a small animal, a bird, etc. can be distinguished easily.
　なお、上記各実施形態では、センサ設置場所４と制御部５は分離配置されているが、一体型であってもよい。また、センサ設置場所４は一体型でなくてもよく、各検知センサ２のユニットを任意の位置に設置できるようにし、各検知センサ２のユニットからの情報を制御するユニットを設けてもよい。 In addition, in each said embodiment, although the sensor installation location 4 and the control part 5 are arrange | positioned separately, an integrated type may be sufficient. In addition, the sensor installation location 4 may not be integrated, and a unit for controlling the information from each detection sensor 2 unit may be provided so that the unit of each detection sensor 2 can be installed at an arbitrary position.
　なお、上記各実施形態では、カメラ操作用出力部９は、侵入者Ｈの通過位置を検出すると、監視カメラ３がその位置に自動的に振り向けられるための通過位置情報信号を出力するが、カメラ操作用出力部９からの位置検出情報に基づいて、警備員などが監視カメラ３を手動で振り向けるようにしてもよい。また、監視カメラ３を省略して、警備員などへ侵入者の位置検出の警報を報知させるだけでもよい。この場合、警報の報知により警備員などが当該検出位置に駆けつけることができる。 In each of the above embodiments, when the camera operation output unit 9 detects the passing position of the intruder H, the camera operating output unit 9 outputs a passing position information signal for the surveillance camera 3 to be automatically directed to that position. Based on the position detection information from the operation output unit 9, a guard or the like may manually turn the surveillance camera 3. Alternatively, the monitoring camera 3 may be omitted, and a security guard or the like may be informed of an intruder position detection alarm. In this case, a guard or the like can rush to the detection position by an alarm notification.
以上のとおり図面を参照しながら好適な実施形態を説明したが、当業者であれば、本件明細書を見て、自明な範囲内で種々の変更および修正を容易に想定するであろう。したがって、そのような変更および修正は、添付の請求の範囲から定まる本発明の範囲内のものと解釈される。 As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily consider various changes and modifications within the obvious scope by looking at the present specification. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.
１：位置検出部付き監視装置
２：対向式警戒ライン遮断検知センサ
３：監視カメラ
５：制御部
７：位置検出部
８：警報出力部
９：カメラ操作用出力部
Ａ：警戒領域
Ｈ：侵入者
Ｓ：警戒ライン
Ｔ：トランスミッター
Ｒ：レシーバー
 
 
  1: Monitoring device with position detection unit 2: Opposing warning line cutoff detection sensor 3: Monitoring camera 5: Control unit 7: Position detection unit 8: Alarm output unit 9: Output unit for camera operation A: Warning area H: Intruder S: Warning line T: Transmitter R: Receiver

Claims (7)

  1. 　警戒領域に検知波からなる警戒ラインを設定する対向式警戒ライン遮断検知センサのトランスミッターとレシーバーが、側面視で検知波が略水平の伝送路をもち、平面視で互いに斜めの伝送路をもつ少なくとも２本の検知波を含む警戒ラインを形成するように相対向して配置されて、前記警戒ラインの遮断により侵入を検知し、侵入者を監視する監視装置であって、
    　侵入者による前記斜めの警戒ラインの遮断に基づいて、侵入者の通過位置を検出する位置検出部を備えた、位置検出部付き監視装置。     The transmitter and receiver of the opposing warning line cutoff detection sensor that sets a warning line consisting of detection waves in the warning area have at least a transmission path in which the detection waves are substantially horizontal in a side view and have transmission paths that are oblique to each other in a plan view. A monitoring device that is arranged opposite to form a warning line including two detection waves, detects an intrusion by blocking the warning line, and monitors an intruder,
    A monitoring device with a position detection unit, comprising a position detection unit for detecting a passing position of an intruder based on the interception of the oblique warning line by the intruder.
  2. 　請求項１において、
    　前記対向式警戒ライン遮断検知センサは、２組のトランスミッターおよびレシーバーが警戒領域の長手方向の両端に設置され、この警戒領域の一方端に、それぞれ各組のトランスミッターまたはレシーバーの一方が前記長手方向と直交する方向に離間して配置され、他方端に、各組の他方が互いに近接して配置されて、２本の斜めの警戒ラインが形成されている、位置検出部付き監視装置。     In claim 1,
    In the opposing warning line cutoff detection sensor, two sets of transmitters and receivers are installed at both ends in the longitudinal direction of the warning area, and one of each pair of transmitter and receiver is connected to the longitudinal direction at one end of the warning area. A monitoring device with a position detector, which is spaced apart in a direction orthogonal to each other, and has two diagonal warning lines formed on the other end, with the other of each set placed close to each other.
  3. 　請求項１において、
    　前記対向式警戒ライン遮断検知センサは、４組のトランスミッターおよびレシーバーが、警戒領域の長手方向の両端に設置されて、この警戒領域の両端に、それぞれ各組のトランスミッターまたはレシーバーが前記長手方向と直交する方向の各端部に配置されて、
    　前記４本の警戒ラインは、側面視で略水平の伝送路をもち、その２本の警戒ラインが平面視で前記長手方向に平行の伝送路をもち、他の２本の警戒ラインが平面視で互いに警戒領域の略中央で交差するように斜めの伝送路をもつように形成されている、位置検出部付き監視装置。     In claim 1,
    In the opposed-type warning line cutoff detection sensor, four sets of transmitters and receivers are installed at both ends in the longitudinal direction of the warning area, and each pair of transmitters or receivers is orthogonal to the longitudinal direction at both ends of the warning area. Placed at each end in the direction to
    The four warning lines have a substantially horizontal transmission line in side view, the two warning lines have a transmission line parallel to the longitudinal direction in plan view, and the other two warning lines in plan view. The monitoring device with a position detecting unit is formed so as to have an oblique transmission path so as to cross each other at the approximate center of the warning area.
  4. 　請求項１において、
    　警戒領域を撮像する監視カメラが設けられ、
    　前記監視カメラが前記検出された侵入者の通過位置に振り向け可能に設定されている、位置検出部付き監視装置。     In claim 1,
    There is a surveillance camera that images the alert area,
    A monitoring device with a position detection unit, wherein the monitoring camera is set so as to be able to be directed to the detected passing position of the intruder.
  5. 　請求項１において、
    　前記位置検出部による検出結果に基づいて、前記監視カメラを侵入者の通過位置に振り向けるための通過位置情報信号を出力する、位置検出部付き監視装置。     In claim 1,
    A monitoring device with a position detection unit that outputs a passing position information signal for turning the monitoring camera to a passing position of an intruder based on a detection result by the position detection unit.
  6. 　請求項４において、
    　複数の警戒領域に、単一の監視カメラが設けられている、位置検出部付き監視装置。     In claim 4,
    A monitoring device with a position detection unit, in which a single monitoring camera is provided in a plurality of warning areas.
  7. 　請求項５において、
    　複数の警戒領域に、単一の監視カメラが設けられている、位置検出部付き監視装置。
     
     
          In claim 5,
    A monitoring device with a position detection unit, in which a single monitoring camera is provided in a plurality of warning areas.


PCT/JP2011/069580 2010-09-07 2011-08-30 Monitor device with position detection unit WO2012032968A1 (en)

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