JP2020119205A - Control terminal and security system - Google Patents

Abstract

To provide a security system capable of carrying out daily inspection as planned, without generating any collision of communication.SOLUTION: In a security system, a control terminal for connecting a detector is synchronously switched from a warning mode to an inspection mode by broadcasting. The control terminal stores determination of whether inspection is acceptable or not without transmitting an alarm signal via daily inspection of the detector to a master unit in the inspection mode. The master unit subsequently transmits a result confirmation signal individually to each control terminal. Each control terminal thereof transmits the determination of whether inspection is acceptable or not, to the master unit according to the result confirmation signal.SELECTED DRAWING: Figure 1

Description

The present invention relates to a control terminal connected to a communication path between a detection device and a master device, and a security system using the control terminal.

Conventionally, a detection device in a security system needs to be inspected daily about once a week. The security system also needs daily inspections.

As a detection device, there is no paired device such as a heat ray type human body detection device that detects the body temperature of the human body or a fence sensor that installs a coaxial cable on the fence and detects intruders due to shaking of the fence (hereafter, these are independent (Detection device) or a receiver that is paired with a transmitter, and a detection device that performs an alarm operation such as issuing an alarm signal by detecting fluctuations or interruptions of electromagnetic waves due to the passage of people in a guard area between them (hereinafter , An opposed type detection device), and the alarm signals generated by these detection devices are sent to a master device such as a monitoring center.

More specifically, electromagnetic waves include microwaves, infrared rays, and the like, and those that are invisible to the human eye are particularly effective for security applications. Further, these are received by a receiver which is a pair of positions separated from the transmitter by several m to several hundred m. In particular, it is general that the distance is several tens to several hundreds meters outdoors.

In addition to transmitting an alarm signal, some alarm operations of the detection device emit a sound or light that threatens an intruder.

The daily inspection of the detection device is performed by the human body actually crossing the warning area if it is a heat ray type human body detection device, and by actually blocking the transmitter and the receiver with the human body if it is an opposed type detection device. , Confirm that an alarm signal is issued.

Daily inspection as a security system is performed by one person confirming the occurrence of an alarm at the monitoring center and another person going to the place where each detection device is installed and issuing an alarm. However, setting up a security system in a large building or a vast site increases the time required to move to the place where the detection device is installed, and consequently increases the time required for daily inspection.

Therefore, as in Patent Document 1, a technique has been developed for performing a system check at a monitoring center to determine an abnormality in the security system.

Patent Document 2 describes an inspection method that has an inspection mode and can be easily performed by one of the security sensors. However, in a large building or a vast site, in order to react all the security sensors by one person. Takes a long time to move, which causes inconvenience in security.

If a detection device is installed in a large building or a vast site, the wiring to the monitoring center and the power supply device becomes long and the wiring cost increases, so a security system using wireless communication is desired.

Wireless security systems have existed before, but if FSK or MSK modulation method (hereinafter referred to as conventional modulation method) is used, the conventional modulation installed at the control terminal connected to the detection device and the monitoring center is used. In general, the communication distance between wireless receivers is about 100 m, and if it exceeds that, it is necessary to install a relay device that retransmits radio waves between the control terminal and conventional modulation wireless receiver. Therefore, the installation cost of the relay device and the cost of wiring for supplying power or a solar power source increase.

Today, a communication method called LPWA (Low Power Wide Area) has been developed, and its communication distance can be extended to several tens of kilometers in sight. When a security system is set up on a vast site by using LPWA, it is not necessary to use the above-mentioned relay device.

As an application example, an example using the LoRa (registered trademark) system, which is a type of LPWA communication system, will be described. The LoRa system realizes the long-distance communication as described above by using the spread spectrum communication using the chirp signal. In the LoRa system, a base station communication device is installed in the monitoring center instead of the conventional modulation system wireless receiver, and the distance from the LoRa system communication device connected to the detection device is expanded up to several tens km. From this, it is possible to connect the detection devices installed in a wider site with one master communication device, and thus the number of connected detection devices will increase.

A feature of the LoRa system is that if the specified bandwidth of wireless communication is narrowed so that the communication distance becomes long, or if SF (Spreading Factor) is set high, the communication time becomes long. There are trade-off points. Specifically, although there are other factors such as antennas in the communication distance, there is a difference of several times from several kilometers to several tens of kilometers, and the communication time differs from several tens of milliseconds to several tens of seconds per signal transmission, which is a thousand times difference. Occurs.

JP, 2002-74557, A JP, 2000-235690, A

If the number of detection devices increases, the number of control terminals will increase accordingly. In such a case, if the master unit communication device communicates individually (by unicast) to each control terminal and inspects in order, the time during which one of the detection devices is inspected becomes long and the security system is incomplete. As a result, the inspection start signal is sent to all the control terminals connected to the master communication device by broadcasting at the same time, and the daily inspection of all the detection devices is started at the same time. The system is in a short time for a short time.

If the control terminal can immediately send the inspection pass/fail judgment to the master communication terminal after completing the daily inspection of the detection device, the daily inspection of the security system will be completed in a very short time. If the daily inspection is performed at the same time, the daily inspection will be completed at the same time, so the time it takes to send the inspection pass/fail judgment from the control terminal to the parent device via the parent device communication terminal will overlap, causing a communication collision due to radio waves. .. If a collision occurs, it will be resent, and the communication time will increase, so the time taken to inspect the security system will not be constant and it will be difficult to carry out routine inspections systematically.

In wireless communication, it is common to avoid a collision by confirming (carrier sense) that communication is not being performed in a frequency band in which communication is being performed, immediately before the communication is started in order to avoid a communication collision.

However, even if an attempt is made to avoid a collision by carrier sense in this way, if multiple communication devices simultaneously perform carrier sense, radio waves will be emitted at the same time, so a collision will occur, and as the number of control terminals increases, a communication collision will occur. The frequency increases.

The LoRa system is capable of long-distance communication as compared to conventional modulation wireless communication, and has a feature that the communication speed is slower in a trade-off with the communication distance. Collision avoidance of communication is an important issue to secure the speed.

Such communication collisions that occur during inspection of security systems are due to the simultaneous transmission of alarm signals by detectors, which normally do not occur in the alert state, but the detectors are inspected by unicast. Then, the security system will be incomplete for a long time.

When setting up a security system, we confirm that wireless communication can be performed without problems between the master communication device and the control terminal, but there is a possibility that wireless communication will be interrupted after installation due to temporary noise. At such a time, it is natural to send an inspection start signal a plurality of times in order to switch the control terminal to the inspection mode, and switch from the one that received the signal to the inspection mode. However, in that case, when the paired transmitter and receiver are connected to different control terminals in the opposite detection device, there will be a gap between the start of inspection mode and the end of inspection mode for each control terminal. Sends an alarm signal.

In order to avoid a communication collision, if the detection device is inspected daily for each control terminal without broadcasting, the inspection time of the security system becomes long.

If the detection device is composed of multiple devices and the device that should be controlled during daily inspection is different from the device that issues the alarm signal, make the master unit remember which control terminal the device that constitutes the detection device is connected to. However, since it becomes necessary to communicate with each control terminal, the settings on the master device become complicated and management of the security system becomes extremely difficult, and communication with multiple control terminals increases the communication amount, resulting in As a result, the inspection time of the security system increases. In addition, the opposed type detection device may be carried around and used for temporary security, and if it is necessary to input the paired information of the device to the master unit each time, the installation of the security system will be delayed and security will be hindered. Occurs.

The detection device generally does not include a general-purpose communication terminal such as an Ethernet (registered trademark) terminal, and providing a dedicated control terminal for controlling daily inspection of the detection device increases cost.

(1) In order to solve such a problem, the control terminal of the present invention connects one or more detection devices to a master communication device, and wirelessly sends an alarm signal of the detection device to the master communication device. A control terminal for transmitting, the control terminal after switching from the warning mode to the inspection mode, the control terminal, to the detection device, sends a control signal for transmitting an alarm signal, the control signal is received. The detection device transmits an alarm signal to the control terminal by performing an alarm operation, and the control terminal checks the detection device that has transmitted the alarm signal without transmitting the alarm signal to the master unit communication device. The pass/fail judgment is stored as a pass, the master transmits a result confirmation signal to the control terminal via the master communication device, and the control terminal detects the detection in the master communication device according to the result confirmation signal. It is characterized in that the inspection pass/fail judgment of the device is transmitted.

(2) Further, the control terminal shifts to the inspection mode in synchronization with another control terminal connected to the master unit communication device by receiving the inspection start synchronization signal at least once during the alert mode. It may be that.

(3) In order to solve such a problem, a security system of the present invention is connected to one or more of the detection devices, the control terminal according to (1) connected to the detection devices, and the control terminal. A security system in which the master unit communication device and a master unit connected to the master unit communication device are connected, the control terminal and the master unit communication device are connected by wireless communication, and the master unit is inspected. A start signal is sent to the master communication device, the master communication device broadcasts the inspection start signal to the control terminal, the control terminal switches from the warning mode to the inspection mode, and then the control terminal detects the detection. A control signal is sent to a device, and the detection device that receives the control signal sends an alarm signal to the control terminal by performing an alarm operation, and the control terminal sends the alarm signal to the master unit communication device. Instead, the inspection pass/fail judgment of the detection device is stored as a pass, and the master unit sends a result check signal for each control terminal after a predetermined time after sending the last inspection start signal to the master unit communication device. The control terminal transmits the inspection pass/fail judgment of the detection device to the master unit via the master communication device in response to the result confirmation signal, thereby shortening the inspection time and avoiding communication collision. It is characterized by

(4) In order to solve such a problem, the security system of the present invention is connected to one or more of the detection devices, the control terminal according to (2) connected to the detection devices, and the control terminal. A security system in which the master unit communication device and a master unit connected to the master unit communication device are connected, the control terminal and the master unit communication device are connected by wireless communication, and the master unit is inspected. A start synchronization signal is sent to the master communication device, the master communication device broadcasts the inspection start synchronization signal one or more times to the control terminal, and the control terminal switches from the warning mode to the inspection mode. The control terminal sends a control signal to the detection device, and the detection device which receives the control signal sends an alarm signal to the control terminal by performing an alarm operation, and the control terminal sends the alarm signal to the master unit. Without transmitting to the communication device, the inspection pass/fail judgment of the detection device is stored as a pass, and the master device is the predetermined time after sending the last inspection start synchronization signal to the master device communication device. Sending a result confirmation signal for each control terminal, the control terminal shortens the inspection time by transmitting the inspection pass/fail judgment of the detection device to the master unit via the master unit communication device in response to the result confirmation signal. It is also characterized by avoiding communication collision.

(5) Further, in the security system according to (4), the detection device is a detection device that includes a transmitter and a receiver, and transmits an alarm signal from the receiver to the control terminal. The transmitter is to stop the emission of electromagnetic waves, the master unit stores in advance connection information of the transmitter and the receiver connected to each of the control terminals, and the master unit is one of the detection devices. It is not necessary to memorize which of the transmitters and the receivers of (1) described above are paired, and the inspection mode may end in a short time.

(6) Further, in the security system described in (5), the detection device may be inspected by cutting off the power supply of the transmitter as the control signal.

According to the control terminal of the present invention, even if the daily inspections of the plurality of detection devices are simultaneously performed, the alarm signals do not collide with each other, and therefore the retransmission does not occur. Further, since the daily inspection of the detection device is completed at a predetermined time, it can be done systematically.

Further, according to the security system of the present invention, since communication collision does not occur, re-transmission from the control terminal due to this does not occur, and the time required for daily inspection as a security system is short.

It is an example of composition of a security system concerning the present invention. It is explanatory drawing which shows the inspection operation|movement of the security system which concerns on this invention. It is explanatory drawing which shows the synchronization of the control terminal which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration example of a security system according to the present invention. In the security system 100, the master device 200 is connected to the master device communication device 300 wirelessly or by wire, the master device communication device 300 is connected to the control terminal 400 by the LoRa method, and the control terminal 400 is connected to the detection device 500. To be done.

The parent device 200 is a computer equipped with a display device such as a liquid crystal display, a storage device, a computing device, a communication device, etc., and is installed in a monitoring center. The alarm signal S40 or the like transmitted to the parent device via the device 300 can be confirmed on the display device, and by operating, the setting of the security system 100 can be performed, the daily inspection is started, and the result can be confirmed. be able to. If the security system 100 is portable, the master 200 is preferably a portable computer such as a notebook computer. Moreover, you may select a programmable logic controller etc. according to a condition.

The base unit communication device 300 is a gateway device used in the LoRa system, and the LoRa system network forms a star-type network topology connecting the plurality of control terminals 400 with the gateway device as the center.

The control terminal 400 includes an antenna for bidirectionally communicating with the base station communication device 300 in the LoRa system, a communication IC, and an input device such as a contact input device so as to receive the alarm signal S40 from the detection device 500. It is installed near 500. Since the detection device 500 is an opposite detection device in this embodiment, there is a distance of tens to hundreds of meters between the pair of transmitters 501 and receivers 502, and they are connected to different control terminals 400.

The detection device 500 is an opposed detection device, and receives the electromagnetic wave E10 emitted from the transmitter 501 at the receiver 502 and transmits an alarm signal S40 to the control terminal 400 according to a change in the electromagnetic wave E10.

If the control terminal 400 is in the alert mode M10, the alarm signal S40 is transmitted from the control terminal 400 to the parent device 200 via the parent device communication device 300.

The inspection operation of the security system according to the present invention will be described below.

FIG. 2 shows a part of the security system 100 extracted for explaining the inspection operation. The parent device 200 transmits the inspection start synchronization signal S20 to the parent device communication device 300, and the parent device communication device 300 broadcasts the inspection start synchronization signal S20 to all the control terminals 400 associated in advance, and the control terminal 400. Switches from the warning mode M10 to the inspection mode M20. More specifically, in consideration of the possibility that the control terminal 400 cannot receive due to the communication environment, the inspection start synchronization signal S20 is transmitted a plurality of times, and the inspection start synchronization signal S20 is transmitted in advance after the last inspection start synchronization signal S2F is received. All the control terminals 400 simultaneously switch to the inspection mode M20 in synchronization with the set synchronization time T30, and the control terminal inspection mode time T20 continues for a predetermined time. Therefore, even if the transmitter 501 and the receiver 502 are separately connected to different control terminals 400, the inspection can be performed normally and the inspection time of the security system 100 can be shortened.

FIG. 3 illustrates synchronization of mode switching of the control terminal 400. The number of times the inspection start synchronization signal S20 is transmitted is arbitrary, but is four here for the sake of simplicity. The inspection start synchronization signal S20 is transmitted a total of four times S21 to S23 and S2F, and is transmitted at intervals of the transmission interval times T11 to T13. If any one of the inspection start synchronization signals S20 is received, the inspection mode is set to the synchronization time T30. Switch to M20.

The control terminal 400 that receives the inspection start synchronization signal S21 switches to the synchronization time T30 after the lapse of time T11+T12+T13+T1F, and the control terminal 400 that receives only the inspection start synchronization signal S2F switches to the inspection mode at the same synchronization time T30 after the passage of time T1F. After continuing the control terminal inspection mode time T20, the mode is switched to the warning mode M10. From this, the daily inspection of the detection device 500 is completed in the inspection mode time T20 which is a predetermined time, so that the systematic inspection can be performed. The same applies when the inspection start synchronization signals S22 and S23 are received.

After switching to the inspection mode M20, the control terminal 400 transmits the control signal S30 to the transmitter 501 connected to activate the detection device 500 to make an alarm operation, and stops emission of the electromagnetic wave E10. More specifically, after the control terminal 400 has switched to the inspection mode M20, the transmitter stops emission of the electromagnetic wave E10 by switching off the power supplied to the transmitter 501 as the control signal S30. As a result, the transmitter 501 of the detection device 500 does not need to have a communication function for stopping the emission of the electromagnetic wave E10, and an Ethernet terminal and other communication terminals are not required, resulting in a cost advantage. Since the detection device 500 is designed to issue an alarm if there is a change in the electromagnetic wave E10 that is greater than the amount that a human body passes between the transmitter 501 and the receiver 502, which is a pair, naturally, if the electromagnetic wave E10 is no longer emitted. The receiver 502 performs an alarm operation, and transmits an alarm signal S40 by relay contact output to the control terminal 400. Since the transmitter 501 has time to emit the electromagnetic wave E10 due to the electric charge stored inside even after the power supply is cut off, the control terminal inspection mode time T20 should be set to a time sufficiently longer than that.

When the control terminal 400 receives the alarm signal S40 from the receiver 502 during the inspection mode M20, the control terminal 400 stores the alarm signal S40 for each individual receiver 502, and unlike the alert mode M10, via the master communication device 300. The alarm signal S40 is not transmitted to the parent device 200. Accordingly, even if the daily inspections of the plurality of detection devices 500 are performed at the same time, the alarm signal S40 does not collide, and therefore the retransmission does not occur.

The control terminal 400 powers on the transmitter 501 connected thereto before ending the inspection mode M20, and if the detection device 500 is normal, controls the transmission of the alarm signal S40 to stop before switching to the warning mode M10. If the warning signal S40 is stopped by the time the signal S30 is stopped and switched to the warning mode M10, and the warning signal S40 is stored, the inspection device pass/fail judgment S50 is determined by passing the detection device 500 including the transmitter 501 and the receiver 502. Remember. Then, the control terminal 400 erases the storage of the alarm signal S40. Further, in the inspection pass determination S50, since the initial value is a failure, other than the ones that are passed here are failures.

In addition to the alarm signal S40, the detection device 500 is an environmental signal such as a signal that is emitted when heavy fog, heavy rain, or other conditions in which the performance of the detection device cannot be exhibited, or a tamper signal that is issued when the detection device is removed. Even in the inspection mode M20, these signals are transmitted from the control terminal 400 to the parent device 200 via the parent device communication device 300, as in the alert mode M10. The state in which these signals are emitted is not suitable for daily inspection of the security system, and the source of these signals should be improved first.

After the transmission interval time T1F+control terminal inspection mode time T20 has elapsed since the last inspection start synchronization signal S2F was transmitted, the master device 200 confirms the inspection pass/fail judgment S50 for each control terminal 400. More specifically, based on the connection information of the transmitter 501 and the receiver 502 for each control terminal 400 stored in the master 200 in advance, the master 200 is connected to the receiver 502 via the master communication device 300. The result confirmation signal S61 is transmitted by unicast to the control terminal 402 which is present. Upon receiving the result confirmation signal S61, the control terminal 402 transmits the inspection pass/fail judgment S51 to the parent device 200 via the parent device communication device 300. The inspection pass/fail judgment S50 includes, for example, information on whether each of the two receivers 502 has passed or failed the inspection if two receivers 502 are connected to a certain control terminal 400.

On the other hand, for example, when trying to inspect each of the detection devices 500, if the transmitter 501 configuring a certain detection device 500 is connected to any control terminal 400 and the emission of the electromagnetic wave E10 of the transmitter is stopped. In order to determine whether the alarm signal S40 is transmitted from the receiver 502 connected to any of the control terminals 400, the parent device 200 needs to store the paired information of the detection device 500 at the time of setting up the security system 100. There is.

However, in the security system 100 of the present invention, the parent device 200 does not need to store which transmitter 501 and receiver 502 are paired. The detection device 500 may carry the transmitter 501 or the receiver 502 connected to the control terminal 400, or a combination of the two as one unit and use it for temporary security. When the security system 100 is set up, different transmission is performed each time. The device 501 and the receiver 502 may constitute the detection device 500. If it is necessary to input the paired information of the detection device 500 to the master unit 200 every time it is set up, the setting up of the security system will be delayed and the security will be impaired, but such is not necessary in the security system of the present invention. ..

As described above, since the parent device 200 stores the connection information of the transmitter 501 and the receiver 502 connected to each control terminal 400 in advance, the result is obtained for the control terminal 400 to which the receiver 502 is not connected. The confirmation signal S60 is not transmitted. Therefore, by dividing the control terminal 400 connecting the transmitter 501 and the control terminal 400 connecting the receiver 502 as shown in FIG. 1, the number of times the master 200 sends the result confirmation signal S60 is halved. The time required is also halved.

When the parent device 200 receives the inspection pass/fail judgment S51, it transmits a result confirmation signal S62 to another control terminal 404 via the parent device communication device 300, and when it receives the inspection pass/fail determination S52, sends it to another control terminal 406. If all the control terminals 400 to which the receiver 502 is connected receive the inspection pass/fail judgment S50 in the master device 200, it can be determined that the communication network in the system is functioning, and the security system 100 is connected. If all the detecting devices 500 have passed, the system can judge as passing, and if there is a detecting device 500 that fails, the administrator confirms which detecting device 500 has failed in the master device 200. Then go to the adjustment. The inspection operation of the security system according to the present invention is as described above.

Although it has been stated that the master device 200 transmits the inspection start synchronization signal S20, the master device communication device 300 broadcasts the inspection start signal S10 to the control terminal 400 by transmitting the inspection start signal S10 a plurality of times. When 400 receives the inspection start signal S10, even if the daily inspection is performed without synchronization, the inspections can be performed almost at the same time, and therefore the daily inspection of the detection devices 500 is performed according to the number of the detection devices 500 to be subjected to the daily inspection. However, the detection device 500 can benefit from the present invention in a limited manner unless the detection device 500 is configured by a plurality of devices, because the time required for the inspection is not significantly increased. If the inspection start signal S10 is transmitted four times at the same timing as S20 in 3, the inspection start time may be extended because the transmission start time T11 to T13 is different depending on the transmission start time S11 to S13 and S1F. is there.

As an example of the problem that occurs when the control terminal 400 is not synchronized and switched to the inspection mode M20, when the control terminal 401 is switched to the inspection mode M20 before 402 and the power of the transmitter 521 is cut off, the receiver 522 is The alarm signal S41 is transmitted to the control terminal 402, and the control terminal 402 transmits the alarm signal S41 to the parent device 200 via the parent device communication device 300. Therefore, even if the intruder is not detected, the alarm signal S41 is transmitted. Will be sent. Further, if the same happens in other control terminals, communication collision may occur.

As another example of the trouble that occurs when the control terminal 400 is not switched to the inspection mode M20 in synchronization, the case of switching to the inspection mode M20 in the order of the control terminal 402 and the control terminal 401 will be described. However, since the transmitter 521 is not emitting electromagnetic waves, the receiver 522 is naturally in the state of transmitting the alarm signal S41 to the control terminal 402, and the control terminal 402 is the parent terminal. Since the alarm signal S41 is transmitted to the parent device 200 via the machine communication device 300, the alarm signal is transmitted even if the intruder is not detected. Further, if the same happens in other control terminals, communication collision may occur.

If the control terminal 400 switches to the inspection mode M20 in synchronization, such a problem does not occur. Since the control terminal 400 does not need to switch to the inspection mode M20 in synchronization with the security system including only the independent detection device, the master device 200 does not send the inspection start synchronization signal S20 via the master device communication device 300. The inspection start signal S10 may be sent to the control terminal 400.

The alarm signal is transmitted by the method of opening and closing a semiconductor or mechanical relay contact, the method of configuring a LAN (Local Area Network) by using an Ethernet terminal, etc., by TCP/IP, and other original communication methods. However, in this embodiment, the relay contact which can be constructed at the lowest cost is used.

Further, the present invention can be implemented without the LoRa system by providing the base unit communication device and the control terminal with the conventional modulation wireless communication function, but in the LoRa system in which the communicable distance and the communication speed are traded off. It exerts the maximum effect.

Further, in the present embodiment, the control terminal receives the alarm signal from the detection device during the inspection mode, and after passing the inspection pass/fail judgment before switching to the caution mode when the alarm signal stops, this is not necessarily the case. You don't have to. For example, it may be passed when an alarm signal is received from the detection device, or may be passed when the alarm signal stops after the alarm signal is received. It is okay, if the alarm signal is not received by the time of switching to the inspection mode and the mode is switched to the warning mode, it may be judged as a failure.

100 Security system 200 Master device 300 Master device Communication device 400 Control terminal 500 Detection device 501 Transmitter 502 Receiver S10 Inspection start signal S20 Inspection start synchronization signal S30 Control signal S40 Warning signal S50 Inspection pass/fail judgment S60 Result confirmation signal T10 Transmission interval time T20 control terminal inspection mode time T30 synchronization time E10 electromagnetic wave M10 warning mode M20 inspection mode

Claims (6)

One or more sensing devices,
A master terminal communication device, and a control terminal for connecting an alarm signal of the detection device to the master unit communication device by radio,
After the control terminal has switched from the warning mode to the inspection mode,
The control terminal sends a control signal for causing the detection device to transmit an alarm signal,
The detection device that receives the control signal transmits an alarm signal to the control terminal by performing an alarm operation,
The control terminal, without transmitting the alarm signal to the master communication device,
Store the detection device that has transmitted the alarm signal as a pass or fail inspection check,
The master unit transmits a result confirmation signal to the control terminal via the master unit communication device,
The control terminal, wherein the control terminal transmits the inspection pass/fail judgment of the detection device to the master communication device in response to the result confirmation signal. The control terminal receives an inspection start synchronization signal one or more times during the alert mode,
The control terminal according to claim 1, wherein the control terminal shifts to the inspection mode in synchronization with another control terminal connected to the master communication device. One or more of the sensing devices,
The control terminal according to claim 1, which is connected to the detection device,
The master communication device connected to the control terminal,
A security system in which a master unit connected to the master unit communication device is connected,
The control terminal and the master communication device are connected by wireless communication,
The base unit sends an inspection start signal to the base unit communication device,
The master unit communication device broadcasts the inspection start signal to the control terminal,
After the control terminal has switched from the warning mode to the inspection mode,
The control terminal sends a control signal to the detection device,
The detection device having received the control signal sends the alarm signal to the control terminal by performing an alarm operation,
The control terminal, without transmitting the alarm signal to the master communication device,
Store the inspection pass/fail judgment of the detection device as a pass,
The master unit sends a result confirmation signal for each control terminal after a predetermined time after sending the last inspection start signal to the master unit communication device,
The control terminal shortens the inspection time and avoids a communication collision by transmitting the inspection pass/fail judgment of the detection device to the master unit via the master unit communication device according to the result confirmation signal. And security system. One or more of the sensing devices,
The control terminal according to claim 2, which is connected to the detection device,
The master communication device connected to the control terminal,
A security system in which a master unit connected to the master unit communication device is connected,
The control terminal and the master communication device are connected by wireless communication,
The master unit sends an inspection start synchronization signal to the master unit communication device,
The master communication device broadcasts the inspection start synchronization signal one or more times to the control terminal,
The control terminal, after switching from alert mode to inspection mode,
The control terminal sends a control signal to the detection device,
Upon receiving the control signal, the detection device sends an alarm signal to the control terminal by performing an alarm operation,
The control terminal, without transmitting the alarm signal to the master communication device,
Store the inspection pass/fail judgment of the detection device as a pass,
The master unit sends a result confirmation signal for each control terminal after a predetermined time after sending the last inspection start synchronization signal to the master unit communication device,
The control terminal shortens the inspection time and avoids a communication collision by transmitting the inspection pass/fail judgment of the detection device to the base unit via the base unit communication device according to the result confirmation signal. And security system. The detection device is a detection device configured by a transmitter and a receiver, which transmits an alarm signal from the receiver to the control terminal,
The control signal causes the transmitter to stop emitting electromagnetic waves,
The parent device stores in advance connection information of the transmitter and the receiver connected to each of the control terminals,
The master unit does not need to memorize which of the transmitters and which of the receivers are paired by the detection device, and the inspection mode ends in a short time. Security system. The security system according to claim 5, wherein the detection device is inspected by cutting off the power supply of the transmitter as the control signal.

Images