JPH10232990A - Remote monitor system and monitor device for abnormality reporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely and speedily detect a fault of the abnormality reporting device of the remote monitor system. SOLUTION: The remote monitor system wherein a center device 1 and the abnormality reporting device 2 are connected together by a communication line 3 is provided with a specific signal sending-out device 5 which always sends a specific signal out to a disconnection monitor device 42. The disconnection monitor device 42 sends an abnormality signal out to the center device 1 once receiving no specific signal. A monitor device 6 is provided between the abnormality reporting device 2 and specific signal sending-out device 5. This monitor device 6 detects a monitor pulse that the abnormality reporting device 2 outputs to a sensor and stops supplying electric power to the specific signal sending-out device 5 when the monitor pulse is not detected. Consequently, if the abnormality monitor device gets out of order, no specific signal is sent out of the specific signal sending-out device, so that abnormality can be detected on the center device side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention monitors the status of a building such as a condominium, a detached house, a building, etc., and sends a status signal of the building to a monitoring center at a remote location via a communication line. The present invention relates to a remote monitoring system for monitoring a state of a building.

[0002]

2. Description of the Related Art As a remote monitoring system, various systems such as a mechanical security system and a building monitoring system have been put into practical use. Here, a conventional technique will be described using a mechanical security system as an example. FIG. 1 shows a configuration of a conventional mechanical security system.

A conventional mechanical security system is configured by connecting a center device 1 provided in a central monitoring center and an abnormality reporting device 2 provided in a monitoring building via a communication line 3 such as a telephone line. You. Reference numeral 4 denotes an exchange provided on the communication line 3, which is composed of an exchange 41 and a disconnection monitoring device 42. Reference numeral 5 denotes a specific signal transmission device provided between the communication line 3 and the abnormality notification device 2.

[0004] The operation of the above mechanical security system will be described. The abnormality notification device 2 transmits an abnormality signal when an abnormal state such as a fire or intrusion is detected by a sensor, or when an abnormality such as a failure of the sensor is detected.
An abnormal state is notified to the center device 1 via the specific signal transmitting device 5, the exchange 41, and the communication line 3.

[0005] The specific signal transmitting device 5 receives power supply from the abnormality reporting device 2 and constantly transmits a specific signal to the disconnection monitoring device 42 via the communication line 3. Disconnection monitoring device 42
Receives a specific signal from the specific signal transmitting device 5 and, when the communication line 3 is disconnected and the specific signal is no longer received, reports an abnormal signal to the center device 1 via the exchange 41 and the communication line 3. . In the central monitoring center, when the center device 1 receives an abnormal signal from the abnormality reporting device 2 or the disconnection monitoring device 42, it takes a measure according to each situation.

[0006] When the entire abnormality reporting device 2 fails, the power supply to the specific signal transmitting device 5 is stopped. As a result, the operation of the specific signal transmitting device 5 stops, and the specific signal is no longer transmitted.
Sends an abnormal signal to the That is, the abnormality notification device 2
In the case of the failure, an abnormal signal is also sent to the center device 1.

[0007]

However, in the above-mentioned mechanical security system, even if the control unit of the abnormality notification device 2 fails, the power supply unit may be sound. In this case, since the specific signal transmitting device 5 continues to transmit the specific signal in response to the power supply, the disconnection monitoring device 42 does not transmit the abnormal signal, and the center device 1 knows the occurrence of the abnormality in the abnormality reporting device 2. Can not do. In this case, since the control unit has failed, the device abnormality signal cannot be transmitted, and the center device 1 assumes that the abnormality notification device 2 is normal.

In order to cope with this, the abnormality report device 2 is caused to periodically report its own status signal, and when the status signal is not received by the center device 1 for a predetermined period, an abnormality occurs in the abnormality report device 2. May be determined. However, it is difficult to make a change for the periodic notification to the abnormality notification devices 2 already installed in large numbers. Further, if the interval of the periodic notification is long, the detection of the abnormality is delayed, and if the interval is short, the communication cost is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to enable a central monitoring center to know a failure of an abnormality notification device in a remote monitoring system reliably and promptly. Another object of the present invention is to make it possible to install a monitoring device for monitoring an abnormality of an abnormality notification device in a remote monitoring system without making any changes to the abnormality notification device.

[0010]

Means for Solving the Problems In the first invention,
From an abnormality reporting device that has a sensor monitoring unit that sends a monitoring output to the sensor to monitor the state of the sensor, the abnormality reporting device sends a failure report to the center device via a communication line, thereby providing a remote monitoring system that remotely monitors the center device. , A specific signal transmission device, a disconnection monitoring device, a power supply control unit, and a monitoring unit.

When an abnormality is detected by the sensor, the abnormality reporting device reports the abnormality to the center device via the specific signal transmitting device, the communication line, and the exchange. The specific signal transmission device receives power supply from the power supply control unit,
A specific signal is output to the disconnection monitoring device via the communication line. The disconnection monitoring device is provided between the specific signal transmitting device and the center device, and notifies the center device of an abnormality when the specific signal is no longer received from the specific signal transmitting device.

The monitoring means is connected to the sensor monitoring unit of the abnormality notification device, and when a failure occurs in the abnormality notification device and the monitoring output from the sensor monitoring unit is no longer detected, the power supply to the specific signal transmission device is performed. Stop by the supply control means.
Next, the operation of the thus configured remote monitoring system will be described. When a failure occurs in the abnormality notification device, the abnormality notification device forcibly stops power supply to the specific signal transmission device. Therefore, the specific signal transmitting device stops transmitting the specific signal to the disconnection monitoring device. Then, the disconnection monitoring device stops receiving the specific signal, and sends an abnormal signal to the center device via the exchange. When the central monitoring center receives the abnormal signal, the central monitoring center takes necessary measures such as dispatching a response person.

[0013] In the second invention, a monitoring device that sends a monitoring output to the sensor and has a sensor monitoring unit that monitors the state of the sensor and that monitors the abnormality of the abnormality reporting device itself is provided. It comprises monitoring means and reporting means. The monitoring unit monitors the monitoring output from the sensor monitoring unit of the abnormality notification device, and when the monitoring output is not detected, notifies the outside by the notification unit.

Since this monitoring device utilizes the sensor monitoring function originally provided in the abnormality notification device, it can be installed without any change to the already installed abnormality notification device. . In addition, by incorporating the function of the monitoring device into the abnormality notification device, the monitoring device does not need to be installed outside, and the installation space is reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the present invention is applied to a mechanical security system will be described with reference to the drawings. The mechanical security system shown in FIG. 2 is configured by connecting a center device 1 provided in a central monitoring center and an abnormality reporting device 2 provided in a monitored building via a communication line 3 such as a telephone line. You.
Reference numeral 4 denotes an exchange provided in the communication line 3, and an exchange 41
And a disconnection monitoring device 42. Reference numeral 5 denotes a specific signal transmission device provided between the communication line 3 and the abnormality notification device 2. Further, a monitoring device 6 is provided between the abnormality notification device 2 and the specific signal transmission device 5.

FIG. 3 shows the configuration of the abnormality notification device 2. In the figure, reference numeral 17 denotes a control unit, which comprises a CPU, a memory, and the like, and controls each unit in the apparatus according to a predetermined program. Reference numerals 11, 12, and 13 denote sensors for detecting the state of the monitored building. Examples of the sensors 11 to 13 include an intruder sensor installed at a place where there is a risk of intrusion into a monitored building, and a fire sensor installed at a place where a fire can be detected. In the following description, 11 is a fire sensor.

Reference numeral 14 denotes a sensor monitoring unit, and each of the sensors 11 to
A monitoring pulse is output to the device 13 at a predetermined cycle. When the sensor does not detect any abnormality, the voltage of the return pulse from each sensor is attenuated by the resistance in the sensor and becomes a voltage equal to or lower than a predetermined value. Further, when the sensor detects an abnormality, the switch is switched on the fire sensor 11 as indicated by a broken line, and there is no attenuation due to resistance, so that the value becomes a predetermined value or more. Further, when there is a disconnection in the sensor circuit, it becomes 0.

The control unit 17 monitors the state of each of the sensors 11 to 13 via the sensor monitoring unit 14. Further, the sensor monitoring unit 14 also sends the wirings S1 and S1 to the monitoring device 6.
2 to output a monitoring pulse. The monitoring pulse to the monitoring device 6 will be described later.

Reference numeral 15 denotes a reporting unit. When an abnormality is detected by the sensors 11 to 13, the control unit 17 outputs an abnormality signal from the notification unit 15 to the wirings L <b> 1 and L <b> 2 and notifies the center device 1 via the communication line 3. A display unit 16 notifies the user of the situation of the monitored building by sound or display. 21
Is an AC-DC converter that converts commercial AC 100 V to DC 12 V that operates the abnormality notification device 2.
Reference numeral 22 denotes DC5V used by the control unit 17 for DC12V.
This is a DC / DC converter that converts the data into. 23 is DC
12V is supplied to the specific signal transmitting device 5 via the wirings P1 and P2.
Power supply unit for supplying power to the

The specific signal transmitting device 5 is provided for monitoring the disconnection of the communication line 3. The specific signal transmitting device 5
Receiving power supply from the power supply unit 23 of the abnormality notification device 2;
A specific signal is constantly transmitted to the disconnection monitoring device 42. That is, the specific signal transmitting device 5 has a function of transmitting the specific signal. In addition, the specific signal transmitting device 5 is the abnormality reporting device 2
And relays an abnormal signal from the abnormality reporting device 2 to the communication line 3.

The disconnection monitoring device 42 recognizes that the communication line 3 is normal when receiving the specific signal. In this case, the disconnection monitoring device 42 does not transmit a signal. On the other hand, when the specific signal is not received, it is determined that a disconnection has occurred in the communication line 3, and an abnormal signal is transmitted to the center device 1. FIG. 4 shows the configuration of the monitoring device 6.

The monitoring device 6 includes a power supply line 31, which connects between power supply lines P1 and P2 from the abnormality notification device 2 and power supply lines P3 and P4 to the disconnection monitoring device 5.
32, and a power supply control unit 33 provided between the power supply 32 and controlling the supply and stop of the supply of power. In addition, wirings S1 and S2 from the sensor monitoring unit 14 of the abnormality notification device 2
And a pulse monitoring unit 34 for monitoring a monitoring pulse transmitted through the unit.

The pulse monitoring section 34 detects a monitoring pulse by the pulse detecting section 35 and outputs a signal to the timer section 36 when the pulse is detected. The timer 36 repeats start and restart by inputting a signal, and counts up and outputs a signal to the reset unit 37 of the power supply control unit 33 when no signal is input for a predetermined time. In the power supply control unit 33, when a signal is input from the timer unit 36, that is, when the monitoring pulse from the sensor monitoring unit 14 of the abnormality notification device 2 is interrupted for a predetermined time or more, the transistor 3
8 is turned off. Thereby, the power supply from the abnormality notification device 2 to the disconnection monitoring device 6 is cut off.

Reference numeral 39 denotes an energization indicator light that lights when power is supplied to the disconnection monitoring device. Next, the operation of the mechanical security system having the above configuration will be described. Now, assume that a fire has occurred in the monitoring building. Error reporting device 2
Then, since the fire sensor 11 short-circuits the sensor circuit as shown by the broken line, the voltage of the return pulse received by the sensor monitoring unit 14 becomes larger than a predetermined value, and the control unit 17 detects an abnormality. When detecting an abnormality, the control unit 17 displays the display unit 16.
In addition to sounding a buzzer and an indication of a fire,
An alarm signal is sent from the notification unit 15 to notify the center device 1 of the occurrence of a fire via the communication line 3.

When the center device 1 receives the abnormal signal, the supervisor of the central monitoring center knows the fire of the monitored building from the display of the center device 1 and prompts the person in charge of the monitored building. Then, the coping person performs an appropriate measure according to the situation of the fire. For example, if the fire can be extinguished with a fire extinguisher, the initial fire extinguishing is performed. Also, sensor 1
When a disconnection occurs in the wiring to 1 to 13, the voltage of the return pulse received by the sensor monitoring circuit 14 becomes 0. The control unit 17 detects the disconnection of the sensor circuit, and performs the same operation as described above.

Here, if the communication line 3 is disconnected from the exchange 4 on the side of the abnormality reporting device 2 or becomes disconnected, even if the abnormality reporting device 2 detects an abnormality, it is transmitted from the abnormality reporting device 2. The abnormal signal does not reach the center device 1. Therefore, a situation occurs in which the center device 1 cannot know the occurrence of an abnormality. However, in the present system, when the communication line 3 is disconnected, the specific signal transmitted by the specific signal transmitting device 5 at a regular time is transmitted to the disconnection monitoring device 4.
2 cannot be received, and sends an abnormal signal to the center device 1.

When this abnormal signal is received by the center device 1, the supervisor of the central monitoring center contacts the emergency responder who is in charge of the monitored building, and the responder rushes to the monitored building to confirm the abnormality of the building. Do. Until the disconnection of the communication line 3 is restored, the person in charge monitors the safety of the monitored building by monitoring what is called a manned person. Next, the abnormality notification device 2
The operation of the monitoring device 6 when a failure occurs will be described.

When the abnormality notification device 2 breaks down, the monitoring pulse output from the sensor monitoring unit 14 at a predetermined cycle is not output. Thereby, the pulse monitoring unit 3 of the monitoring device 6
In No. 4, since the pulse detection unit 35 does not receive the monitoring pulse, no signal is output to the timer unit 36. Clock section 3
In No. 6, the clock is continued because no signal is input. After a lapse of a predetermined time (for example, one second), a signal is output from the clock unit 36 to the reset unit 37 of the power supply control unit 33. Upon receiving this signal, the reset unit 37 turns off the transistor 38 and stops power supply to the specific signal transmission device 5.

The operation of the specific signal transmitting device 5 is stopped when the power supply is stopped, so that the specific signal transmitting device 5 stops transmitting the specific signal. When the disconnection monitoring device 42 stops receiving the specific signal, it sends an abnormal signal to the center device. When the center device 1 receives this abnormal signal, the supervisor of the central monitoring center prompts the responder to the relevant monitored building to perform appropriate processing.

In this way, the abnormality of the abnormality reporting device 2 can be constantly monitored by the central monitoring center.
The security system is more reliable. And the monitoring device 6
Uses the sensor monitoring function originally provided by the abnormality notification device, so that the abnormality notification device can be installed without any change. Furthermore, since the abnormality monitoring of the abnormality reporting device 2 can be performed only by connecting the monitoring device 6 to the sensor monitoring unit 14 of the abnormality reporting device 2, the monitoring of the existing abnormality reporting device can be easily performed.

Further, since it is possible to reduce the transmission interval of the regular status signal notification from the abnormality notification device 2 to the center device 1 as in the related art, it is possible to reduce the system cost. As mentioned above, although one Embodiment of this invention was described, this invention is not limited to said Embodiment.

For example, in the above embodiment, when the monitoring device 6 detects an abnormality of the abnormality notification device 2, the power supply to the specific signal transmitting device 5 is stopped to notify the central monitoring center of the abnormality. In addition, the monitoring device 6 can be provided with a reporting means to directly report an abnormality to the central monitoring center. Further, the buzzer may be sounded in the monitoring device 6 to notify a nearby person.

Further, the monitoring device can be incorporated in the abnormality reporting device. This example will be described with reference to FIG. The abnormality notification device 2 'of FIG.
The power supply control unit 33 is inserted between the AC-DC converter 21 and the power supply unit 23. Note that the power supply control unit 33
It can also be inserted on the input side of the AC-DC converter 21. Further, the power supply unit 23 and the disconnection monitoring device 5 are directly connected by the wirings P3 and P4.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a conventional mechanical security system.

FIG. 2 is a diagram showing a configuration of a mechanical security system to which the present invention is applied.

FIG. 3 is a diagram showing a configuration of an abnormality notification device in FIG. 2;

FIG. 4 is a diagram showing a configuration of a monitoring device in FIG. 2;

FIG. 5 is a diagram showing a configuration of a modification of the abnormality notification device of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Center apparatus 2 ... Abnormality notification apparatus 3 ... Communication line 4 ... Exchange 41 ... Exchange 42 ... Disconnection monitoring apparatus 5 ... Specific signal transmission apparatus 6 ... Monitoring apparatus 11, 12, 13 ... Sensor 14 ... Sensor monitoring unit 15 ... Notification Unit 17 ... Control unit 21 ... AC-DC converter 23 ... Power supply unit 31, 32 ... Power supply line 33 ... Power supply control unit 34 ... Pulse monitoring unit 35 ... Pulse detection unit 36 ... Time measuring unit 37 ... Reset unit

Claims (3)

[Claims] An abnormality notification device having a sensor monitoring unit that sends a monitoring output to a sensor to monitor the state of the sensor.
In a remote monitoring system for performing remote monitoring at the center device by notifying an abnormality to the center device via a communication line, a specific signal transmitting device that is supplied with power from the outside and constantly outputs a specific signal to the communication line A disconnection monitoring device connected to the communication line and notifying the center device of an abnormality when not receiving a specific signal from the specific signal transmitting device; and supplying power and stopping power supply to the specific signal transmitting device. And a power supply control unit for performing the above operation. The power supply control unit is connected to a sensor monitoring unit of the abnormality notification device, detects a monitoring output of the sensor monitoring unit, and when the monitoring output is not detected, causes the power supply control unit to stop power supply. A remote monitoring system comprising monitoring means. 2. A monitoring device for monitoring an abnormality of an abnormality notification device having a sensor monitoring unit for sending a monitoring output to a sensor to monitor a state of the sensor, wherein the monitoring unit detects a monitoring output from the sensor monitoring unit. And a notifying means for notifying the outside when the monitoring means does not detect the monitoring output. 3. An abnormality notification device incorporating the monitoring device according to claim 2.