Security system, control device, and sensor setting method

Abstract

When installing numerous sensors on a security target, the challenge is to efficiently and reliably prevent sensor configuration errors. [Solution] After setting the angle of the mirror part of the sensor 20 installed on the security target (S1), the control device 10 notifies the sensor 20 of a device status request (S2). When the security sensor 20 receives the device status request, it notifies the control device 10 of the device status information, including the angle set for itself (S3). The control device 10 uses the received device status information to determine and display the setting status of each sensor (S4). For example, the sensor 20 with sensor number "A01" installed at the entrance will display a setting status of "set", and the sensor 20 with sensor number "A02" installed at the hall entrance will display a setting status of "forgotten to set".

Description

Technical Field

[0001] The present invention relates to a security system, a control device, and a sensor setting method that efficiently prevent setting omissions of sensors when a large number of sensors are installed for a security target.

Background Art

[0002] Conventionally, in a security system, various sensors are arranged in a facility to be secured, and when a control device receives a detection signal from a sensor, an occurrence of an abnormality is notified to a monitoring center at a remote location.

[0003] For example, Patent Document 1 discloses a sensor that is installed for a security target and detects the presence or absence of a person by detecting infrared rays arriving from a preset detection area.

[0004] In such a sensor, in order to reliably detect a person, the detection area of the sensor is individually set in accordance with the purpose, position, installation environment, etc. at the time of installation of the sensor.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, when a large number of sensors are installed for a security target, it becomes unclear which sensor setting work has been completed, and setting omissions may occur. To prevent this, a maintenance worker advances the sensor setting while writing in drawings or the like, which not only takes time but also causes setting omissions of the sensors if a misentry occurs, and it becomes impossible to detect an intruder.

[0007] The present invention was made to solve the problems (challenges) of the above-mentioned prior art, and aims to provide a security system, control device, and sensor setting method that can efficiently and reliably prevent sensor setting errors when a large number of sensors are installed on a security target. [Means for solving the problem]

[0008] To solve the above problems, the present invention provides a security system having a sensor installed on a security target and a control device capable of communicating with the sensor, wherein the control device comprises a device status request unit that makes a device status request to the sensor, a device status information receiving unit that receives device status information transmitted from the sensor in response to the device status request, a determination unit that determines whether or not the sensor is set based on at least the device status information, and a notification unit that notifies the determination result made by the determination unit.

[0009] Furthermore, the present invention is characterized in that, in the above invention, the sensor comprises a storage unit for storing identification information that uniquely identifies the device, an acceleration sensor, an infrared sensor unit for detecting abnormalities in the security target, and a mirror unit for reflecting external light to the infrared sensor unit.

[0010] Furthermore, the present invention is characterized in that, in the above invention, the device status information includes the identification information of the sensor and the acceleration value of the acceleration sensor.

[0011] Furthermore, the present invention is characterized in that, in the above invention, when the determination unit receives the device status information, if the acceleration value is an initial value that means it has not been set, it determines that the setting has been forgotten.

[0012] Furthermore, the present invention is characterized in that, in the above invention, when the determination unit receives the device status information, if the acceleration value is not an initial value and the identification information does not match the previously stored set identification information, it determines that it is already set.

[0013] Furthermore, the present invention is a control device capable of communicating with a sensor installed on a security target, comprising: a device status request unit that makes a device status request to the sensor; a device status information receiving unit that receives device status information transmitted from the sensor in response to the device status request; a determination unit that determines whether or not the sensor has been set up based on at least the device status information; and a notification unit that notifies the determination result made by the determination unit.

[0014] Furthermore, the present invention relates to a sensor setting method in a security system having a sensor installed on a security target and a control device capable of communicating with the sensor, characterized in that the method includes: a device status request step in which the control device makes a device status request to the sensor; a device status information reception step in which the control device receives device status information transmitted from the sensor in response to the device status request; a determination step in which the control device determines whether or not the sensor has been set based on at least the device status information; and a notification step in which the determination result from the determination step is notified. [Effects of the Invention]

[0015] According to the present invention, when installing a large number of sensors on a security target, it is possible to efficiently and reliably prevent omissions in sensor settings. [Brief explanation of the drawing]

[0016] [Figure 1] Figure 1 is an explanatory diagram illustrating the overview of the security system according to the embodiment. [Figure 2] Figure 2 shows the system configuration of the security system according to the embodiment. [Figure 3] Figure 3 is a functional block diagram showing the configuration of the sensor shown in Figure 2. [Figure 4] Figure 4 shows an example of the serial number data shown in Figure 3. [Figure 5] Figure 5 is a functional block diagram showing the configuration of the control device shown in Figure 2. [Figure 6]FIG. 6 is a diagram showing an example of the production number data, security target data, and sensor history data shown in FIG. 5. [Figure 7] FIG. 7 is a diagram showing an example of the sensor state data and operation mode data shown in FIG. 5. [Figure 8] FIG. 8 is a functional block diagram showing the configuration of the center device shown in FIG. 2. [Figure 9] FIG. 9 is a diagram showing an example of the sensor state data and operation mode data shown in FIG. 8. [Figure 10] FIG. 10 is a diagram showing an example of the detection area in the sensor according to the embodiment. [Figure 11] FIG. 11 is a diagram showing an example of the angle setting in the sensor according to the embodiment. [[ID=I6]] [Figure 12] FIG. 12 is a diagram showing the operation of the acceleration sensor according to the embodiment. [Figure 13] FIG. 13 is a flowchart showing a processing procedure related to the determination of the appropriateness of the angle setting of the sensor according to the embodiment.

Embodiments for Carrying Out the Invention

[0017] Hereinafter, embodiments of the security system, control device, and sensor setting method according to the present embodiment will be described in detail based on the drawings.

[0018] <Overview of the Security System According to the Embodiment> First, an overview of the security system according to the present embodiment will be described. FIG. 1 is an explanatory diagram of the overview of the security system according to the present embodiment. The security system according to the present embodiment has a plurality of sensors 20 installed in the security target. When installing each sensor 20, the maintenance staff adjusts the angle of the mirror part in the sensor to set the detection range of each sensor 20 (S1).

[0019] When the installation work of all the sensors 20 is completed and the maintenance staff performs a predetermined operation on the control device 10, the control device 10 notifies all the sensors 20 installed in the security target of a device state request (S2).

[0020] When sensor 20 receives a device status request, it notifies the control device 10 of device status information, including information indicating the angle of the mirror part of its device (S3). The control device 10 uses the received device status information to determine and display the setting status of each sensor 20 (S4).

[0021] For example, sensor 20 with sensor number "A01" installed at the entrance will display a setting status of "configured," while sensor 20 with sensor number "A02" installed at the hall entrance will display a setting status of "forgotten to configure."

[0022] Thus, in the security system according to this embodiment, after setting the angle of the mirror portion of the sensor 20, the system is configured to determine the setting status by acquiring device status information of each sensor 20 from the control device 10. Therefore, when a large number of sensors 20 are installed on the object to be monitored, it is possible to efficiently and reliably prevent any omissions in the setting of the sensors 20.

[0023] <System configuration of the security system according to the embodiment> Next, the system configuration of the security system according to this embodiment will be described. Figure 2 is a diagram showing the system configuration of the security system according to this embodiment.

[0024] As shown in Figure 2, the sensor 20 is connected to the control device 10 via a communication line within the area being guarded. The control device 10 is connected to the central device 40 via a network N. Network N may be a network dedicated to the security system or a public network such as the Internet.

[0025] Sensor 20 is a sensor that is horizontally installed on the ceiling or other surface of the area to be guarded and detects objects such as people using infrared light. When sensor 20 receives a device status request from control device 10, it associates the serial number, which is identification information that uniquely identifies the device, with the acceleration value detected by the acceleration sensor included in the device, and notifies the control device 10 of the device status information.

[0026] Furthermore, if the sensor 20 detects an object using infrared light, it notifies the control device 10 of the detection information.

[0027] The control device 10 is a device that monitors the installation status of devices such as security sensors 20 and controls security-related functions. When the control device 10 receives an operation related to a device status request, it notifies the sensor 20 of the device status request.

[0028] Furthermore, if the control device 10 receives device status information from the sensor 20, it stores the received data as sensor status data. If the control device 10 receives an operation to switch operating modes by a maintenance worker or the like, or an operation indicating the completion of setting work by a maintenance worker or the like, it stores the sensor status data in the sensor history data and updates it.

[0029] Furthermore, the control device 10 uses the "acceleration value" and "serial number" data of the sensor 20 stored in the sensor status data and sensor history data, as well as the initial acceleration value (the acceleration value based on the angle of the mirror part at the time of factory shipment), to determine whether or not angle setting has been performed. It then displays the result of the determination of whether or not angle setting has been performed. In addition, if the control device 10 receives an operation to switch the operating mode by a maintenance worker or an operation indicating the completion of the setting work by a maintenance worker or the like, it transmits the sensor status data, including the determination result, to the center device 40.

[0030] Furthermore, the control device 10 has three operating modes: a security mode in which it notifies the central device 40 of abnormal detection information when it receives detection information from the sensor 20; a deactivation mode in which it does not notify the central device 40 even when it receives a detection signal; and a maintenance mode for maintenance personnel to perform inspection work on the security system. The control device 10 performs a transition process between operating modes in response to operations by maintenance personnel, etc., and transmits operating mode data indicating the transitioned operating mode to the central device 40.

[0031] Furthermore, the control device 10 has pre-stored data indicating the installation location and security target of each sensor 20. If the operating mode is security mode when detection information is received from the sensor 20, it notifies the central device 40 of abnormality detection information, which includes the data indicating the installation location and security target of the sensor 20.

[0032] The central device 40 is a device that monitors the abnormality detection status of each security target, as well as the settings and operating modes of the sensors 20. When the central device 40 receives sensor status data from the control device 10, it stores the received data.

[0033] Furthermore, if the center device 40 receives operating mode data from the control device 10, it stores the received data. If the center device 40 receives abnormality detection information from the control device 10, it displays the security target and installation location included in this abnormality detection information as an alert.

[0034] <Configuration of Sensor 20> Next, the configuration of the sensor 20 shown in Figure 2 will be described. Figure 3 is a functional block diagram showing the configuration of the sensor 20 shown in Figure 2. As shown in Figure 3, the sensor 20 has an acceleration sensor unit 21, an infrared sensor unit 22, a mirror unit 23, a communication unit 24, a storage unit 25, and a control unit 26.

[0035] The acceleration sensor unit 21 is fixed to the mirror unit 23 and is a device that detects acceleration values ​​in the x, y, and z directions on the mirror unit 23. For example, as shown in Figure 12(a), if the acceleration sensor unit 21 is installed horizontally, it will detect 0G in the x and y directions and 1G in the z direction. Also, as shown in Figure 12(b), if the acceleration sensor unit 21 is installed at a 30-degree angle from the horizontal, it will detect 0G in the x direction, 0.5G in the y direction, and 0.86G in the z direction. The set angle of the mirror unit 23 can be recognized by these detected acceleration values.

[0036] The infrared sensor unit 22 is a device that detects the presence or absence of a heat source from infrared rays reflected by the mirror unit 23. The mirror unit 23 is a mirror that reflects external light to the infrared sensor unit 22, and the angle of reflection can be changed manually. The communication unit 24 is an interface unit for data communication with the control device 10 via a communication line.

[0037] The memory unit 25 is a storage device such as a non-volatile memory, and stores the serial number data 25a. The serial number data 25a is data indicating the serial number individually assigned to the sensor 20.

[0038] The control unit 26 is a control unit that performs overall control of the sensor 20 and includes a request receiving unit 26a, a self-device status notification unit 26b, and a detection unit 26c. In practice, these programs are loaded into the CPU (Central Processing Unit) and executed, causing the request receiving unit 26a, the self-device status notification unit 26b, and the detection unit 26c to execute the processes corresponding to them.

[0039] The request receiving unit 26a is a processing unit that performs the processing of receiving device status requests. When the request receiving unit 26a receives a device status request from the control device 10, it passes a notification instruction to its own device status notification unit 26b.

[0040] The self-device status notification unit 26b is a processing unit that performs notification processing of device status information. When the self-device status notification unit 26b receives a notification instruction from the request receiving unit 26a, it associates the serial number data 25a with the acceleration values ​​in the x, y, and z axes detected by the acceleration sensor unit 21 and notifies the control device 10 of the device status information.

[0041] If the amount of change in infrared radiation detected by the infrared sensor unit 22 over time exceeds a threshold, the detection unit 26c notifies the control device 10 of the abnormality detection information.

[0042] Next, an example of data stored in the memory unit 25 of the sensor 20 shown in Figure 3 will be described. Figure 4 shows an example of the serial number data 25a shown in Figure 3. The serial number data 25a shown in Figure 4 indicates that the serial number of the sensor 20 is "123456789".

[0043] <Configuration of the control device 10> Next, the configuration of the control device 10 shown in Figure 2 will be described. Figure 5 is a functional block diagram showing the configuration of the control device 10 shown in Figure 2. As shown in Figure 5, the control device 10 is connected to the display unit 11 and the input unit 12 and has a first communication unit 13, a second communication unit 14, a storage unit 15, and a control unit 16.

[0044] The display unit 11 is a display device such as an LCD panel or a display device. The input unit 12 is an input device such as a keyboard or mouse. The first communication unit 13 is an interface unit for data communication with the sensor 20 via a communication line. The second communication unit 14 is an interface unit for data communication with the center device 40 via the network N.

[0045] The memory unit 15 is a storage device such as a hard disk drive or non-volatile memory, and stores serial number data 15a, security target data 15b, sensor history data 15c, sensor status data 15d, and operation mode data 15f.

[0046] The serial number data 15a is data indicating the serial number of the control device 10. The security target data 15b is data indicating the security target on which the control device 10 and sensor 20 are installed. The sensor history data 15c includes the "installation location," "acceleration value," and the "serial number" of the sensor 20, and indicates the state of the sensor 20 as stored based on the previous device state information. The sensor status data 15d includes the "installation location," "acceleration value," and the "serial number" of the sensor 20, and indicates the current state of the sensor 20, and includes "setting status" data indicating the angle setting status of the mirror unit 23.

[0047] The operation mode data 15f is data indicating the operation mode of the control device 10.

[0048] The control unit 16 is a control unit that performs overall control of the control device 10, and includes a device status request unit 16a, a device status receiving unit 16b, a device status determination unit 16c, a device status storage unit 16d, a device status notification unit 16e, a security control unit 16f, and an anomaly notification unit 16g. In practice, by loading these programs into the CPU and executing them, the processes corresponding to the device status request unit 16a, the device status receiving unit 16b, the device status determination unit 16c, the device status storage unit 16d, the device status notification unit 16e, the security control unit 16f, and the anomaly notification unit 16g are executed, respectively.

[0049] The device status request unit 16a is a processing unit that notifies the sensor 20 of a device status request. When the device status request unit 16a receives an operation related to a device status request from the input unit 12, it notifies the sensor 20 of the device status request.

[0050] The device status receiving unit 16b is a processing unit that receives device status information from the sensor 20. When the device status receiving unit 16b receives device status information from the sensor 20, it stores the received data in the sensor status data 15d.

[0051] The device status determination unit 16c is a processing unit that determines whether or not the angle of the mirror portion 23 of the sensor 20 has changed, that is, whether or not angle setting has been performed. The device status determination unit 16c uses the "installation location," "acceleration value," and "serial number" data in the sensor status data 15d and sensor history data 15c, as well as the initial value of the acceleration of the mirror portion 23 (the acceleration value based on the angle of the mirror portion at the time of factory shipment), to determine whether or not angle setting has been performed according to the following procedure.

[0052] If the "installation location" in the sensor status data 15d is the same as the data in the sensor history data 15c, and the "acceleration values" in both are the same, and the "serial numbers" in both are the same, then the sensor 20 in question is the one that was previously installed, and the angle of the mirror unit 23 has not been changed, so it is determined that "no setting change". If the "serial numbers" in both are different, then the sensor 20 has been replaced for some reason, and the angle of the mirror unit 23 has been set to have the same detection area as the sensor 20 before replacement, so it is determined that "set up due to equipment replacement".

[0053] If the "installation location" in the sensor status data 15d is the same as the data in the sensor history data 15c, but the "acceleration values" in both are different, and the "acceleration value" in the sensor status data 15d is at its initial value, then it means that the sensor 20 was installed but the adjustment of the detection area by the mirror unit 23 was not performed, so it is determined to be "setting forgotten". If the "acceleration value" in the sensor status data 15d is not at its initial value and the "serial numbers" in both are the same, then it means that the angle of the mirror unit 23 was changed in order to change the detection area of ​​the sensor 20 for some reason, so it is determined to be "setting changed". If the "serial numbers" in both are different, then it means that the sensor 20 itself was replaced and the mirror unit 23 was set to have a different detection area than the previously installed sensor 20, so it is determined to be "setting changed due to equipment replacement".

[0054] If data for the same location as the "installation location" in the sensor status data 15d does not exist in the sensor history data 15c, and the "acceleration value" in the sensor status data 15d is at its initial value, it means that a new sensor 20 has been installed but the detection area has not been adjusted, so it is determined to be "forgotten to set during initial setup". If the "acceleration value" in the sensor status data 15d is not at its initial value, it means that a new sensor 20 has been installed and the angle of the mirror unit 23 has also been adjusted, so it is determined to be "set during initial setup".

[0055] Furthermore, the device status determination unit 16c stores and updates the determination result of whether or not angle setting has been performed as the "setting status" in the sensor status data 15d.

[0056] The device state storage unit 16d is a processing unit that manages the sensor history data 15c. When the device state storage unit 16d receives an operation from the input unit 12 indicating a change in operating mode by a maintenance worker or the completion of setting work by a maintenance worker or the like, it stores the data in the sensor state data 15d in the sensor history data 15c and updates it.

[0057] The device status notification unit 16e is a processing unit that performs notification and transmission processing of sensor status data 15d. If the sensor status data 15d is updated by the device status determination unit 16c, the device status notification unit 16e displays the sensor status data 15d on the display unit 11. Then, it transmits the sensor status data 15d, including the security target data 15b, to the central device 40.

[0058] The security control unit 16f is a processing unit that controls the operating mode. The security control unit 16f performs operation mode transition processing in response to operations by maintenance personnel, etc., on the input unit 12 or an operating device (not shown). Specifically, when maintenance personnel, etc., perform an operation on the input unit 12 to set the operating mode to deactivation mode, a security transition instruction requesting a transition to deactivation mode is passed from the input unit 12 to the security control unit 16f. The security control unit 16f authenticates the maintenance personnel, etc. who performed the operation, and if the maintenance personnel, etc. is authenticated as a legitimate person, it controls the operating mode to deactivation mode and updates the operating mode data 15f to "deactivation mode". Also, when maintenance personnel perform an operation on the input unit 12 to set the operating mode to security mode, a security transition instruction requesting a transition to security mode is passed from the input unit 12 to the security control unit 16f. The security control unit 16f authenticates the maintenance personnel, etc. who performed the operation, and if the maintenance personnel, etc. is authenticated as a legitimate person, it controls the operating mode to security mode and updates the operating mode data 15f to "security mode". Then, the security target data 15b is added to the operation mode data 15f and transmitted to the central device 40. The authentication of the maintenance worker who performed the operation is performed by comparing the PIN entered by the maintenance worker through the input unit 12, the card information of the maintenance worker read by a card reader (not shown), and the facial information of the maintenance worker captured by a camera (not shown) with pre-registered information to verify whether the maintenance worker is a legitimate person.

[0059] The abnormality notification unit 16g is a processing unit that notifies the central device 40 of the detection of an abnormality when an abnormality is detected. When the abnormality notification unit 16g receives detection information from the sensor 20, it notifies the central device 40 of the abnormality detection information, which includes the location of the sensor 20 and the security target data 15b.

[0060] Next, an example of data stored in the memory unit 15 of the control device 10 shown in Figure 5 will be described. Figures 6 and 7 show an example of the serial number data 15a, security target data 15b, sensor history data 15c, sensor status data 15d, and operation mode data 15f shown in Figure 5.

[0061] The serial number data 15a shown in Figure 6(a) indicates that the serial number of the control device 10 is "678901234". The security target data 15b shown in Figure 6(b) indicates that the security target of the control device 10 is "KB001".

[0062] The sensor history data 15c shown in Figure 6(b) indicates that for sensor number "A01", the installation location is "Entrance", the serial number is "234567890", the acceleration value x is "0" G, the acceleration value y is "0.71" G, and the acceleration value z is "0.71" G.

[0063] Furthermore, sensor history data 15c shows that for sensor number "A02", the installation location is "hall entrance", the serial number is "345678901", the acceleration value x is "0" G, the acceleration value y is "0.5" G, and the acceleration value z is "0.86" G.

[0064] The sensor status data 15d shown in Figure 7(b) indicates that for sensor number "A01", the installation location is "Entrance", the serial number is "123456789", the acceleration value x is "0" G, the acceleration value y is "0.71" G, the acceleration value z is "0.71" G, and the setting status is "Set up after equipment replacement".

[0065] Furthermore, sensor status data 15d indicates that for sensor number "A02", the installation location is "hall entrance", the serial number is "012345678", the acceleration value x is "0"G, the acceleration value y is "0"G, the acceleration value z is "1"G, and the setting status is "setting forgotten".

[0066] The operation mode data 15f shown in Figure 7(b) indicates that the operation mode is "release mode".

[0067] <Configuration of Center Device 40> Next, the configuration of the center device 40 shown in Figure 2 will be described. Figure 8 is a functional block diagram showing the configuration of the center device 40 shown in Figure 2. As shown in Figure 8, the center device 40 is connected to the display unit 41 and the input unit 42 and has a communication unit 43, a storage unit 45, and a control unit 46.

[0068] The display unit 41 is a display device such as an LCD panel or a display device. The input unit 42 is an input device such as a keyboard or mouse. The communication unit 43 is an interface unit for data communication with the control device 10 via the network N.

[0069] The memory unit 45 is a storage device such as a hard disk drive or non-volatile memory, and stores sensor state data 45a and operation mode data 45c.

[0070] Sensor status data 45a is data indicating the status of the sensors 20 installed on each security target. Operation mode data 45c is data indicating the operation mode of the control device 10 installed on each security target.

[0071] The control unit 46 is a control unit that performs overall control of the central device 40 and includes a device status management unit 46a, a security status management unit 46b, and a notification unit 46c. In practice, by loading these programs into the CPU and executing them, the device status management unit 46a, the security status management unit 46b, and the notification unit 46c are made to execute the processes corresponding to them.

[0072] The device status management unit 46a is a processing unit that manages the sensor status data 45a. When the device status management unit 46a receives sensor status data from the control device 10, it stores the received data in the sensor status data 45a.

[0073] The security status management unit 46b is a processing unit that manages the operation mode data 45c. When the security status management unit 46b receives operation mode data from the control device 10, it stores the received data in the operation mode data 45c.

[0074] The notification unit 46c is a processing unit that notifies abnormality detection information. When the notification unit 46c receives abnormality detection information from the control device 10, it displays the security target and installation location included in this abnormality detection information as an alert on the display unit 41.

[0075] Next, an example of data stored in the memory unit 45 of the sensor device 40 shown in Figure 8 will be described. Figure 9 shows an example of the sensor state data 45a and operation mode data 45c shown in Figure 8.

[0076] The sensor status data 45a shown in Figure 9(a) indicates that for the security target "KB001" and sensor number "A01", the installation location is "Entrance", the serial number is "123456789", the acceleration value x is "0" G, the acceleration value y is "0.71" G, the acceleration value z is "0.71 G", and the setting status is "Set up after equipment replacement".

[0077] Furthermore, the sensor status data 45a indicates that for the security target "KB001" and sensor number "A02", the installation location is "hall entrance", the serial number is "012345678", the acceleration value x is "0"G, the acceleration value y is "0"G, the acceleration value z is "1"G, and the setting status is "setting forgotten".

[0078] The operation mode data 45c shown in Figure 9(b) indicates that the security target is "KB001" and the operation mode is "Deactivation Mode", and that the security target is "KB002" and the operation mode is "Security Mode".

[0079] <An example of detection area and angle setting in the sensor 20 according to the embodiment> Next, an example of the detection area and angle setting in the sensor 20 according to this embodiment will be described. Figure 10 is a diagram showing an example of the detection area in the sensor 20 according to this embodiment, and Figure 11 is a diagram showing an example of the angle setting in the sensor 20 according to this embodiment.

[0080] In sensor 20, the detectable range changes by changing the angle of the mirror portion 23. For example, as shown in Figure 10(a), when the angle of the mirror portion 23 is set to α, the range of area A becomes detectable. As shown in Figure 10(b), when the angle of the mirror portion 23 is set to β, the range of area B becomes detectable.

[0081] The angle of the mirror unit 23 can be set by manually moving the mirror unit 23, as shown in Figure 11. Specifically, it is set to an angle determined by the height at which the sensor 20 is mounted and the maximum detection distance. For example, if the mounting height is 3m and the maximum detection distance is 5.2m, the angle to be set will be 30 degrees.

[0082] <Function of the acceleration sensor unit 21 according to this embodiment> Next, the operation of the acceleration sensor unit 21 according to this embodiment will be explained. Figure 12 is a diagram showing the operation of the acceleration sensor unit 21 according to this embodiment.

[0083] The acceleration sensor unit 21 can detect acceleration values ​​in the x, y, and z directions. For example, as shown in Figure 12(a), if the acceleration sensor unit 21 is installed horizontally, it will detect 0G in the x and y directions and 1G in the z direction.

[0084] Furthermore, as shown in Figure 12(b), if the acceleration sensor unit 21 is installed at a 30-degree angle from the horizontal, it will detect 0G in the x-axis direction, 0.5G in the y-axis direction, and 0.86G in the z-axis direction.

[0085] <Processing procedure for determining the appropriateness of the angle setting of the sensor 20 according to the embodiment> Next, the processing procedure for determining whether the angle setting of the sensor 20 according to this embodiment is appropriate will be described. Figure 13 is a flowchart showing the processing procedure for determining whether the angle setting of the sensor 20 according to this embodiment is appropriate.

[0086] As shown in Figure 13, after notifying the sensor 20 of a device status request (step S101), if the control device 10 receives device status information from the sensor 20 (step S102; Yes), it stores the device status information as sensor status data 15d and checks whether data for the same location as the "installation location" in the sensor status data 15d exists in the sensor history data 15c (step S103). If the control device 10 has not received device status information from the sensor 20 (step S102; No), it returns to step S102.

[0087] If data for the same location as the "installation location" in the sensor status data 15d exists in the sensor history data 15c (step S103; Yes), then the "acceleration values" of the sensor status data 15d and the sensor history data 15c are compared (step S105).

[0088] If the "acceleration values" in the sensor status data 15d and the sensor history data 15c are the same (Step S105; Yes), and the "serial numbers" in the sensor status data 15d and the sensor history data 15c are the same (Step S106; Yes), then it is determined that the sensor 20 has not been replaced and the angle of the mirror unit 23 has not been changed, and it is determined that "no setting changes" (Step S112). If the "serial numbers" are different (Step S106; No), then it is determined that the sensor 20 has been replaced for some reason and the mirror unit 23 has been set to the same angle as the sensor 20 that was installed before the replacement, and it is determined that "set by equipment replacement" (Step S113).

[0089] If the "acceleration value" in the sensor status data 15d and the sensor history data 15c are different (Step S105; No), and the "acceleration value" in the sensor status data 15d is the initial value (Step S107; Yes), then the angle of the mirror unit 23 is in the factory default state, which means that the setting work for the mirror unit 23 was forgotten, and it is determined that "setting forgotten" (Step S111).

[0090] If the "acceleration value" in the sensor status data 15d is not the initial value (Step S107; No), and the "serial number" in the sensor status data 15d and the sensor history data 15c are the same (Step S108; Yes), then the sensor 20 has not been replaced, but the angle of the mirror part 23 has been changed, so it is determined to be "set" (Step S110). If the "serial numbers" are different (Step S108; No), then the sensor 20 has been replaced for some reason, and the angle of the mirror part 23 has been changed to a different angle than before, so it is determined to be "set due to equipment replacement" (Step S109).

[0091] If data for the same location as the "installation location" in the sensor status data 15d does not exist in the sensor history data 15c (step S103; No), and the "acceleration value" in the sensor status data 15d is at its initial value (step S104; Yes), then the sensor 20 is newly installed and the angle of the mirror unit 23 is still at the factory default setting, so it is determined that "setting was forgotten during initial setup" (step S114). If the "acceleration value" is not at its initial value (step S104; No), then the sensor 20 is newly installed and the angle of the mirror unit 23 is not at the factory default setting, so it is determined that "setting was completed during initial setup" (step S115).

[0092] Once it is determined whether or not the angle setting has been performed, the determination result is displayed on the display unit 11. The maintenance worker confirms from the display on the display unit 11 that the setting work for all sensors 20 has been completed, and when they perform an operation to indicate the completion of the setting work using the input unit 12, the determination result is stored in the sensor status data 15d and notified to the center device 40 (step S116), and the process ends.

[0093] As described above, in the security system according to this embodiment, after setting the angle of the mirror portion of the sensor, the control device acquires the acceleration value of the acceleration sensor provided on each sensor to determine the setting status of the mirror portion of that sensor. Therefore, when installing a large number of sensors, it is possible to efficiently and reliably prevent any omissions in the setting of sensors.

[0094] In the above embodiment, a configuration was described in which, after setting the angle of the mirror portion of the sensor, the acceleration value of each sensor is obtained from the control device to determine whether or not the setting work for each sensor has been performed. However, the present invention is not limited to this. The system can also be configured to manage the history of sensor angle settings and equipment replacements by storing all sensor status data, including the setting status of each sensor, in chronological order.

[0095] Furthermore, in the above embodiment, after setting the angle of the mirror portion of the sensor, the acceleration value of each sensor is obtained from the control device, and when a maintenance worker confirms that the setting work for all sensors 20 has been completed and performs an operation to indicate the completion of the setting work, the determination result is stored in the sensor status data 15d. However, the present invention is not limited to this. The system can also be configured to obtain the acceleration value of each sensor from the control device and store the obtained result as sensor status data 15d when the setting of the operating mode for the security target is changed, such as when patrolling begins, when patrolling ends, when security begins, when security ends, etc., or when the power is turned ON / OFF. In addition, the conditions for acquisition may be set arbitrarily.

[0096] Furthermore, in the above embodiment, the angle of the mirror is recognized from the acceleration value detected by the acceleration sensor unit 21 fixed to the mirror unit 23, but this is not the only way to do so. If a switch or dial for setting the angle of the mirror unit 23 is provided, the angle of the mirror unit 23 may be determined based on the setting of this switch or dial.

[0097] It should be noted that the configurations illustrated in the above embodiments are functional schematics and do not necessarily have to be physically represented as shown. In other words, the distributed and integrated forms of each device are not limited to those shown, and all or part of them can be functionally or physically distributed and integrated in any unit according to various loads and usage conditions. [Industrial applicability]

[0098] The security system, control device, and sensor setting method according to the present invention are suitable for efficiently and reliably preventing sensor setting errors when a large number of sensors are installed on a security target. [Explanation of Symbols]

[0099] N Network 10 Control device 11 Display section 12 Input section 13. First Communications Department 14. Second Communications Department 15 Storage section 15a Serial Number Data 15b Security target data 15c Sensor history data 15d Sensor status data 15f Operating Mode Data 16 Control Unit 16a Device status request unit 16b Device status receiving unit 16c Device status determination unit 16d Device state storage unit 16e Device Status Notification Unit 16F Security Control Unit 16g Abnormality notification section 20 sensors 21 Acceleration sensor section 22 Infrared sensor unit 23 Mirror section 24 Communications Department 25 Memory section 25a Serial Number Data 26 Control Unit 26a Request receiving unit 26b Self-device status notification unit 26c detection unit 40 Center device 41 Display section 42 Input section 43 Communications Department 45 Storage section 45a Sensor status data 45c Operating Mode Data 46 Control Unit 46a Device Status Management Unit 46b Security Status Management Department 46c News Department

Claims

1. A security system comprising a sensor installed on a security target and a control device capable of communicating with the sensor, The control device is A device status request unit that requests a device status from the aforementioned sensor, A device status information receiving unit that receives device status information transmitted from the sensor in response to the device status request, A determination unit that determines whether the sensor has been set based on at least the device status information, A notification unit that notifies the determination result of the determination unit, and A security system characterized by having the following features.

2. The aforementioned sensor is The security system according to claim 1, comprising a storage unit for storing identification information that uniquely identifies the device, an acceleration sensor, an infrared sensor unit for detecting abnormalities in the security target, and a mirror unit for reflecting external light to the infrared sensor unit, wherein the acceleration sensor is provided on the mirror unit.

3. The device status information is, The security system according to claim 2, characterized in that it includes the identification information of the sensor and the acceleration value of the acceleration sensor.

4. The determination unit, The security system according to claim 3, characterized in that when the device status information is received, if the acceleration value is an initial value indicating that it has not been set, it is determined that the setting has been forgotten.

5. The determination unit, The security system according to claim 3, characterized in that when the device status information is received, if the acceleration value is not an initial value and the identification information does not match a pre-stored set identification information, it is determined that it is already set.

6. A control device capable of communicating with sensors installed on the object being guarded, A device status request unit that requests a device status from the aforementioned sensor, A device status information receiving unit that receives device status information transmitted from the sensor in response to the device status request, A determination unit that determines whether the sensor has been set based on at least the device status information, A notification unit that notifies the determination result of the determination unit, and A control device characterized by being equipped with

7. A method for setting sensors in a security system having sensors installed on a security target and a control device capable of communicating with the sensors, The control device performs a device status request step in which it requests the sensor to perform a device status request, A device status information receiving step, which receives device status information transmitted from the sensor in response to the device status request, A determination step of determining whether the sensor has been set up, based at least on the device status information, A notification step that notifies the result of the determination step described above, and A sensor setting method characterized by including the following.

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