Inspection equipment and inspection method for passive sensors

Abstract

To provide an inspection instrument and an inspection method, which enhance work efficiency of inspection work for a monitoring system including passive sensors.SOLUTION: An inspection instrument 11 is provided, comprising an inspection seat 12, a power supply device 13, connectors 14, and a detector 15. The inspection seat 12 holds a passive sensor 5. The power supply device 13 supplies power to the passive sensor 5 held by the inspection seat 12. The detector 15 detects an open / closed state of the passive sensor 5 held by the inspection seat 12. Probes 16 of the detector 15 are removably connected to the connectors 14.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an inspection tool and method for a passive sensor. [Background technology]

[0002] Patent Document 1 discloses an example of a surveillance system that includes multiple security sensors, such as passive sensors that use infrared rays to detect people. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-56000 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the monitoring system of Patent Document 1, multiple security sensors are connected in series. Therefore, if an abnormality such as a breakdown occurs in one of the security sensors, it is not possible to identify which security sensor the abnormality occurred in. This can result in poor work efficiency in inspection work to deal with the abnormality.

[0005] The present disclosure is directed to solving such problems, and provides an inspection tool and an inspection method that can improve the efficiency of inspection work for monitoring systems that include passive sensors. [Means for solving the problem]

[0006] The inspection tool disclosed herein is an inspection tool for a passive sensor that switches the open / close state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / close state is monitored by a controller of a monitoring system, and is equipped with an inspection base that holds the passive sensor, a power supply unit that supplies power to the passive sensor held on the inspection base, and a connector to which a detector probe that detects the open / close state of the passive sensor held on the inspection base is detachably connected.

[0007] The inspection method according to the present disclosure is a method for inspecting the passive sensor using the above-mentioned inspection tool, and includes disconnecting the passive sensor from the controller, attaching and holding the passive sensor that has been disconnected from the controller to the inspection base, and confirming that the detector has detected a change in the open / closed state of the passive sensor by holding a hand over the passive sensor held on the inspection base. The inspection method disclosed herein is a method for inspecting a passive sensor using the above-mentioned inspection tool, which further includes a cover that covers the passive sensor held on the inspection base, and includes disconnecting the passive sensor from the controller, attaching and holding the passive sensor that has been disconnected from the controller to the inspection base, and covering the passive sensor held on the inspection base with the cover, thereby confirming that the detector has detected a change in the open / closed state of the passive sensor. The inspection method disclosed herein is a method for inspecting a passive sensor using the above-mentioned inspection tool, which is arranged to face the passive sensor held on the inspection base and further includes an infrared generator that can be switched on or off to generate infrared rays by operating a switch, and includes disconnecting the passive sensor from the controller, attaching and holding the passive sensor that has been disconnected from the controller to the inspection base, and operating the switch of the infrared generator to confirm that the detector has detected a change in the open / closed state of the passive sensor. The inspection method disclosed herein is a method for inspecting a passive sensor using an inspection tool for a passive sensor that switches the open / close state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / close state is monitored by a controller of a monitoring system, the inspection tool including an inspection base that holds the passive sensor, a power supply unit that supplies power to the passive sensor held on the inspection base, and a detector that detects the open / close state of the passive sensor held on the inspection base, and includes disconnecting the passive sensor from the controller, attaching and holding the passive sensor that has been disconnected from the controller to the inspection base, and holding a hand over the passive sensor held on the inspection base to confirm that the detector has detected a change in the open / close state of the passive sensor. The inspection method disclosed herein is a method for inspecting a passive sensor using an inspection tool for a passive sensor that switches the open / close state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / close state is monitored by a controller of a monitoring system, the inspection tool including an inspection base that holds the passive sensor, a power supply unit that supplies power to the passive sensor held on the inspection base, a detector that detects the open / close state of the passive sensor held on the inspection base, and a cover that covers the passive sensor held on the inspection base, and includes disconnecting the passive sensor from the controller, attaching and holding the passive sensor that has been disconnected from the controller to the inspection base, and covering the passive sensor held on the inspection base with the cover, thereby confirming that the detector has detected a change in the open / close state of the passive sensor. [Effects of the Invention]

[0008] According to the inspection tool or inspection method of the present disclosure, the work efficiency of the inspection work of a monitoring system including a passive sensor can be further improved. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a configuration diagram of a monitoring system according to a first embodiment. [Figure 2] 1 is a perspective view of an inspection tool according to a first embodiment. [Figure 3] 1 is a perspective view of the inspection tool according to the first embodiment, showing a state in which an inspection base holds a passive sensor. FIG. [Figure 4] 3A to 3C are diagrams illustrating an example of a method for inspecting a passive sensor according to the first embodiment. [Figure 5] FIG. 10 is a configuration diagram of an inspection tool according to a second embodiment. [Figure 6] FIG. 10 is a configuration diagram of an inspection tool according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The embodiments for carrying out the present disclosure will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals, and redundant explanations are appropriately simplified or omitted. Note that the subject matter of the present disclosure is not limited to the following embodiments, and any component of the embodiments may be modified or omitted within the scope of the gist of the present disclosure.

[0011] Embodiment 1 FIG. 1 is a configuration diagram of a monitoring system 1 according to the first embodiment.

[0012] The monitoring system 1 is a system that monitors the presence or absence of people in a monitored area 2. The monitored area 2 is, for example, an area inside or outside a building. The monitoring system 1 may be, for example, a security system that monitors for people entering the monitored area 2, or a lighting management system that controls the turning on and off of lights based on the presence or absence of people in the monitored area 2. The monitoring system 1 includes a monitoring circuit 3 and a controller 4.

[0013] The monitoring circuit 3 is a circuit that detects the presence or absence of a person in the monitored area 2. The monitoring circuit 3 includes one or more passive sensors 5. In this example, the monitoring circuit 3 includes multiple passive sensors 5. The passive sensor 5 is a sensor that detects the presence of a person based on infrared rays emitted by the person. The passive sensor 5 includes a pair of power terminals 6 and a pair of sensor terminals 7. The power terminals 6 are terminals that receive power. The sensor terminals 7 are terminals used to obtain the detection result of the presence of a person. The passive sensor 5 switches the open / closed state between the pair of sensor terminals 7 depending on the presence or absence of detection of a person based on infrared rays using, for example, a pyroelectric element. Here, the open / closed state between the pair of sensor terminals 7 is not limited to mechanical open / close, but may also be switching between the presence and absence of current using a switching element. The monitoring circuit 3 connects the sensor terminals 7 of the multiple passive sensors 5 in series.

[0014] The passive sensor 5 is placed, for example, on the ceiling of the monitored area 2. The passive sensor 5 is attached to a base 8. The base 8 is a device that holds the passive sensor 5. One of the passive sensor 5 and the base 8 is provided with a mounting fixture 9. The other of the passive sensor 5 and the base 8 is provided with a mounting hole 10 that holds the mounting fixture 9. In this example, the mounting fixture 9 is attached to the passive sensor 5. At this time, the mounting hole 10 is provided in the base 8. The mounting fixture 9 is, for example, a protrusion such as a hook. The mounting hole 10 is, for example, a potbelly hole. The passive sensor 5 is held on the base 8 by inserting the mounting fixture 9 into the mounting hole 10 of the base 8 and turning it. When held on the base 8, the pair of sensor terminals 7 and the pair of power terminals 6 of the passive sensor 5 are connected to the corresponding terminals of the base 8.

[0015] The controller 4 is a device that monitors the presence or absence of a person in the monitored area 2 by monitoring the open / closed states of the passive sensors 5. The controller 4 monitors the open / closed states of the multiple passive sensors 5 connected in series to the monitoring circuit 3. The controller 4 supplies power to the passive sensors 5 through the power terminals 6 of each passive sensor 5. This causes a preset signal voltage to be applied between a pair of sensor terminals 7 of each passive sensor 5. The signal voltage is, for example, 12 V DC. The controller 4 monitors the open / closed states of the multiple passive sensors 5 using a signal based on the signal voltage thus applied to each passive sensor 5.

[0016] Here, in the monitoring system 1, a failure such as a disconnection or short circuit may occur in one of the passive sensors 5. When this happens, an inspection of the monitoring system 1 is performed. Here, since the sensor terminals 7 of the multiple passive sensors 5 are directly connected, the controller 4 does not identify which passive sensor 5 has experienced an abnormality. For this reason, the worker inspecting the monitoring system 1 uses an inspection tool to identify the passive sensor 5 in which the abnormality has occurred.

[0017] FIG. 2 is a perspective view of the inspection tool 11 according to the first embodiment.

[0018] The inspection tool 11 includes an inspection base 12, a power supply 13, and a connector 14.

[0019] The inspection base 12 is a device that holds the passive sensor 5 to be inspected. The inspection base 12 is a device with a configuration similar to that of the base 8 used in the monitoring system 1, for example. The inspection base 12 in this example has ring-shaped holes as mounting holes 10. The passive sensor 5 is held on the inspection base 12 by inserting a mounting fixture 9 into the mounting holes 10 of the inspection base 12 and turning it. When held on the inspection base 12, the pair of sensor terminals 7 and the pair of power terminals 6 of the passive sensor 5 are connected to the corresponding terminals of the inspection base 12.

[0020] The power supply device 13 is connected to the terminals of the inspection base 12 that correspond to the power terminals 6 of the passive sensor 5. The power supply device 13 is a device that supplies power to the passive sensor 5 held on the inspection base 12. The power supply device 13 is, for example, a battery box. The power supply device 13 supplies power to the passive sensor 5 so that a signal voltage set in the monitoring system 1 is applied between a pair of sensor terminals 7 of the passive sensor 5 held on the inspection base 12.

[0021] The connector 14 is connected to a terminal of the inspection base 12 that corresponds to the sensor terminal 7 of the passive sensor 5. The connector 14 has a function of holding inserted electric wires or electrodes, etc., so that they do not fall out. The connector 14 may also have a function of switching between holding and releasing electric wires, etc., using a lever or the like.

[0022] FIG. 3 is a perspective view of the inspection tool 11 according to the first embodiment, showing a state in which the inspection base 12 holds the passive sensor 5. As shown in FIG.

[0023] The inspection tool 11 includes a detector 15. The detector 15 is, for example, a general-purpose portable tester that detects electrical signals such as current or voltage, and electrical characteristics such as resistance. A probe 16 of the detector 15 is connected to a connector 14. The probe 16 of the detector 15 is held by the connector 14 so as not to fall off. The detector 15 may also include an alarm that notifies the user of a change in the detected signal by sound. The detector 15 may also include an indicator light that notifies the user of a change in the detected signal by turning on, off, flashing, or the like.

[0024] Next, an example of a method for inspecting the passive sensor 5 will be described with reference to FIG. FIG. 4 is a diagram illustrating an example of a method for inspecting the passive sensor 5 according to the first embodiment.

[0025] The worker heads to the inspection site with the inspection tool 11. At the inspection site, the worker connects the probe 16 of the detector 15 to the connector 14.

[0026] Next, the worker removes any one of the passive sensors 5 arranged in the monitored area 2 from the base 8. This disconnects the passive sensor 5 from the controller 4.

[0027] Next, the worker attaches and holds the passive sensor 5, which has been removed from the pedestal 8 and disconnected from the controller 4, on the inspection pedestal 12. At this time, the power terminal 6 and the sensor terminal 7 of the passive sensor 5 are connected to the corresponding terminals of the inspection pedestal 12.

[0028] Next, the worker holds his / her hand over the passive sensor 5 held on the inspection pedestal 12. At this time, infrared rays emitted from the worker's hand in response to body heat will switch the open / closed state between the pair of sensor terminals 7 of the passive sensor 5 if the passive sensor 5 is normal. When the worker can confirm a change in the open / closed state of the passive sensor 5 through an instruction, display, or notification from the detector 15, the worker determines that the passive sensor 5 is normal. On the other hand, when the worker cannot confirm a change in the open / closed state of the passive sensor 5 through the detector 15, the worker determines that the passive sensor 5 is abnormal.

[0029] Next, the worker removes the passive sensor 5 for which the presence or absence of an abnormality has been confirmed from the inspection pedestal 12. After that, the worker similarly attaches the other passive sensors 5 for which the presence or absence of an abnormality has not yet been confirmed to the inspection pedestal 12 and checks for the presence or absence of an abnormality using the detector 15. By sequentially checking for the presence or absence of an abnormality in this manner for each passive sensor 5 connected to the monitoring circuit 3, the worker identifies the passive sensor 5 in which an abnormality has occurred. Note that if no passive sensor 5 has an abnormality, the worker may determine that an abnormality has occurred in the communication path, such as the wiring of the controller 4 or the monitoring circuit 3.

[0030] As described above, the inspection tool 11 according to the first embodiment includes the inspection base 12, the power supply 13, the connector 14, and the detector 15. The inspection base 12 holds the passive sensor 5. The power supply 13 supplies power to the passive sensor 5 held on the inspection base 12. The detector 15 detects the open / closed state of the passive sensor 5 held on the inspection base 12. The probe 16 of the detector 15 is detachably connected to the connector 14.

[0031] With this configuration, the operation of the passive sensor 5 can be checked by attaching it to the inspection base 12, making it easier to check the operation of the passive sensor 5. In particular, it becomes easier to check the operation of multiple passive sensors 5 consecutively. This further improves the efficiency of inspection work on the monitoring system 1 including the passive sensors 5. Note that the detector 15 may be an external device to the inspection tool 11. Also, the inspection tool 11 does not need to have the connector 14. In this case, the detector 15 is directly connected to the corresponding terminal of the inspection base 12.

[0032] The connector 14 also holds the probe 16 of the detector 15 so that it does not fall off.

[0033] With this configuration, the probe 16 of the detector 15 is less likely to fall off during inspection work, making it easier to check the operation of the passive sensor 5.

[0034] In addition, the power supply unit 13 supplies power to the passive sensor 5 so that the same voltage as the voltage applied by the controller 4 between the pair of sensor terminals 7 of the connected passive sensor 5 is applied between the pair of sensor terminals 7 of the passive sensor 5 held on the inspection base 12.

[0035] With this configuration, the operating conditions of the passive sensor 5 held on the inspection pedestal 12 are the same as those of the passive sensor 5 connected to the controller 4, thereby further increasing the reliability of the operation check.

[0036] The detector 15 may issue a notification by sound when the open / closed state of the passive sensor 5 held on the inspection base 12 is switched.

[0037] This configuration allows the worker to check for any changes in the open / closed state without reading the display or instructions of the detector 15, thereby improving the efficiency of the inspection work. In addition, since the detector 15 does not use electromagnetic waves such as light for notification, it is less likely that the passive sensor 5 will malfunction due to the notification.

[0038] Embodiment 2 In the second embodiment, differences from the example disclosed in the first embodiment will be described in particular detail. For features not described in the second embodiment, any of the features of the example disclosed in the first embodiment may be adopted.

[0039] FIG. 5 is a configuration diagram of an inspection tool 11 according to the second embodiment.

[0040] The inspection tool 11 includes a cover 17. The cover 17 is a device that covers the passive sensor 5 held on the inspection base 12.

[0041] Next, an example of a method for inspecting the passive sensor 5 will be described.

[0042] The worker attaches any one of the passive sensors 5 arranged in the area to be monitored 2 to the inspection base 12 and holds it.

[0043] Next, the worker covers the passive sensor 5 held on the inspection base 12 with the cover 17. At this time, the worker may cover the passive sensor 5 with the cover 17 that the worker has warmed, for example, with his or her hands. In this way, if the passive sensor 5 is normal, the infrared rays emitted from the warmed cover 17 will switch the open / closed state between the pair of sensor terminals 7 of the passive sensor 5. When the worker can confirm a change in the open / closed state of the passive sensor 5 through an instruction, display, or notification from the detector 15, the worker determines that the passive sensor 5 is normal. On the other hand, when the worker cannot confirm a change in the open / closed state of the passive sensor 5 through the detector 15, the worker determines that the passive sensor 5 is abnormal.

[0044] Alternatively, the worker may cover the passive sensor 5 with an unheated cover 17. In this case, the cover 17 blocks infrared rays emitted from the worker's hand or the like in response to body heat. Therefore, even if the worker holds his / her hand over the passive sensor 5 through the cover 17, if the passive sensor 5 is normal, the open / closed state between the pair of sensor terminals 7 of the passive sensor 5 will not be changed. When the worker can confirm a change in the open / closed state of the passive sensor 5 covered with the unheated cover 17 using the detector 15, the worker determines that the passive sensor 5 is abnormal. This allows the worker to identify whether the abnormality is due to a broken wire or a short circuit in the passive sensor 5.

[0045] Embodiment 3 In the third embodiment, differences from the examples disclosed in the first or second embodiment will be described in particular detail. For features not described in the third embodiment, any of the features of the examples disclosed in the first or second embodiment may be adopted.

[0046] FIG. 6 is a configuration diagram of an inspection tool 11 according to the third embodiment.

[0047] The inspection tool 11 includes an infrared generator 18. The infrared generator 18 is a device that generates infrared rays that can be detected by the passive sensor 5. The infrared generator 18 is, for example, a heater or an infrared LED (Light Emitting Diode). The infrared generator 18 is arranged so as to face the passive sensor 5 held on the inspection base 12. The infrared generator 18 includes a switch 19 that switches between emitting and not emitting infrared rays.

[0048] Next, an example of a method for inspecting the passive sensor 5 will be described.

[0049] The worker attaches any one of the passive sensors 5 arranged in the area to be monitored 2 to the inspection base 12 and holds it.

[0050] Next, the worker operates the switch 19 of the infrared generator 18. If the passive sensor 5 is normal, the infrared rays generated by the infrared generator 18 switch the open / close state between the pair of sensor terminals 7 of the passive sensor 5. When the worker can confirm a change in the open / close state of the passive sensor 5 through an instruction, display, or notification from the detector 15, the worker determines that the passive sensor 5 is normal. On the other hand, when the worker cannot confirm a change in the open / close state of the passive sensor 5 through the detector 15, the worker determines that the passive sensor 5 is abnormal. In this way, whether or not the infrared rays for confirming the operation of the passive sensor 5 are generated becomes clear, so that it becomes possible to more clearly determine whether or not the passive sensor 5 is abnormal.

[0051] To summarize the above explanation, possible configurations of the technology according to the present disclosure include the configurations listed below as appendices. (Appendix 1) An inspection tool for a passive sensor that switches an open / close state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / close state is monitored by a controller of a monitoring system, an inspection base that holds the passive sensor; a power supply device that supplies power to the passive sensor held on the inspection base; a detector that detects the open / closed state of the passive sensor held on the inspection base; An inspection tool comprising: (Appendix 2) The detector issues an audio notification when the open / closed state of the passive sensor held on the inspection base is switched. Inspection equipment as described in Appendix 1. (Appendix 3) An inspection tool for a passive sensor that switches an open / close state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / close state is monitored by a controller of a monitoring system, an inspection base that holds the passive sensor; a power supply device that supplies power to the passive sensor held on the inspection base; a connector to which a probe of a detector for detecting the open / closed state of the passive sensor held on the inspection base is detachably connected; An inspection tool comprising: (Appendix 4) The connector holds the probe of the detector so that it does not fall off. Inspection equipment as described in Appendix 3. (Appendix 5) The power supply device supplying power to the passive sensor so that a voltage identical to a voltage applied by the controller between the pair of sensor terminals of the passive sensor connected to the controller is applied between the pair of sensor terminals of the passive sensor held on the inspection base; 10. An inspection tool according to any one of claims 1 to 4. (Appendix 6) A cover that covers the passive sensor held on the inspection base 6. An inspection tool according to any one of claims 1 to 5, comprising: (Appendix 7) an infrared generator that is arranged to face the passive sensor held on the inspection base and that can be switched on and off by operating a switch; 7. An inspection tool according to any one of claims 1 to 6, comprising: (Appendix 8) A method for inspecting the passive sensor using the inspection tool according to any one of Supplementary Note 1 to Supplementary Note 7, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; By placing a hand over the passive sensor held on the inspection base, it is confirmed that the detector has detected a change in the open / closed state of the passive sensor; An inspection method comprising: (Appendix 9) A method for inspecting the passive sensor using the inspection tool described in Supplementary Note 6, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; By covering the passive sensor held on the inspection base with the cover, it is confirmed that the detector has detected a change in the open / closed state of the passive sensor; An inspection method comprising: (Appendix 10) A method for inspecting the passive sensor using the inspection tool described in Appendix 7, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; confirming that the detector detects a change in the open / closed state of the passive sensor by operating the switch of the infrared generator; An inspection method comprising: [Explanation of symbols]

[0052] 1 monitoring system, 2 monitored area, 3 monitoring circuit, 4 controller, 5 passive sensor, 6 power terminal, 7 sensor terminal, 8 base, 9 mounting fixture, 10 mounting hole, 11 inspection tool, 12 inspection base, 13 power supply, 14 connector, 15 detector, 16 probe, 17 cover, 18 infrared generator, 19 switch

Claims

1. An inspection tool for a passive sensor that switches an open / close state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / close state is monitored by a controller of a monitoring system, an inspection base that holds the passive sensor; a power supply device that supplies power to the passive sensor held on the inspection base; a connector to which a probe of a detector for detecting the open / closed state of the passive sensor held on the inspection base is detachably connected; An inspection tool comprising:

2. The connector holds the probe of the detector so that it does not fall off.

2. The inspection tool of claim 1.

3. The power supply device supplying power to the passive sensor so that a voltage identical to a voltage applied by the controller between the pair of sensor terminals of the passive sensor connected to the controller is applied between the pair of sensor terminals of the passive sensor held on the inspection base; 3. An inspection tool according to claim 1 or 2.

4. A cover that covers the passive sensor held on the inspection base The inspection tool according to claim 1 or 2, comprising:

5. an infrared generator that is arranged to face the passive sensor held on the inspection base and that can be switched on and off by operating a switch; The inspection tool according to claim 1 or 2, comprising:

6. A method for inspecting the passive sensor using the inspection tool according to claim 1 or claim 2, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; By placing a hand over the passive sensor held on the inspection base, it is confirmed that the detector has detected a change in the open / closed state of the passive sensor; An inspection method comprising:

7. A method for inspecting the passive sensor using the inspection tool according to claim 4, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; By covering the passive sensor held on the inspection base with the cover, it is confirmed that the detector has detected a change in the open / closed state of the passive sensor; An inspection method comprising:

8. A method for inspecting the passive sensor using the inspection tool according to claim 5, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; confirming that the detector detects a change in the open / closed state of the passive sensor by operating the switch of the infrared generator; An inspection method comprising:

9. A method for inspecting a passive sensor using an inspection tool for a passive sensor that switches between an open / closed state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / closed state is monitored by a controller of a monitoring system, the inspection tool comprising an inspection base that holds the passive sensor, a power supply unit that supplies power to the passive sensor held on the inspection base, and a detector that detects the open / closed state of the passive sensor held on the inspection base, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; By placing a hand over the passive sensor held on the inspection base, it is confirmed that the detector has detected a change in the open / closed state of the passive sensor; An inspection method comprising:

10. A method for inspecting a passive sensor using an inspection tool for a passive sensor that switches between an open / closed state between a pair of sensor terminals depending on whether or not a person is detected based on infrared rays, and the open / closed state is monitored by a controller of a monitoring system, the inspection tool comprising an inspection base that holds the passive sensor, a power supply that supplies power to the passive sensor held on the inspection base, a detector that detects the open / closed state of the passive sensor held on the inspection base, and a cover that covers the passive sensor held on the inspection base, disconnecting the passive sensor from the controller; Attaching and holding the passive sensor, which has been disconnected from the controller, to the inspection base; By covering the passive sensor held on the inspection base with the cover, it is confirmed that the detector has detected a change in the open / closed state of the passive sensor; An inspection method comprising:

Images