JPH0793686A - Remote monitoring system - Google Patents

Abstract

PURPOSE:To prevent erroneous information to a monitoring center from being issued in a remote monitoring system which performs the remote monitoring of plural parts to be monitored by the monitoring center. CONSTITUTION:Parts 2-1 to 2-n to be monitored are equipped with plural kinds of sensors 4, transmission parts 5 which send out an alarm signal to the monitoring center 1 based on the detection signal of the sensor 4, and setting tables 6 on which erroneous information preventing time corresponding to the plural kinds of sensors 4 are set, and the transmission part 5 which reads out the er-roneous information preventing time corresponding to the sensor 4 set on the setting table 6 based on the detection signal from the sensor 4, and sends out the alarm signal to the monitoring center 1 as a correct detection signal when the detection signal is still continued after the erroneous information preventing time elapses.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring system for monitoring monitored parts distributed by monitoring centers. Buildings, warehouses, and general households of various companies are used as monitored parts, and various sensors are arranged. Based on the detection signals of the sensors, alarm signals are sent to the monitoring center, and the monitoring center guards by receiving the alarm signals. Remote monitoring systems for dispatching personnel are known. In such a remote monitoring system, the problem of false alarms has increased as the number of monitored parts has increased.

[0002]

2. Description of the Related Art FIG. 4 is an explanatory view of a conventional example. 31 is a monitoring center, 32-1 to 32-n are monitored parts, 33 is a switching network, 34-1 to 34-10 are sensors, and 35 is Transmitter, 3
6 is an entrance / exit gate, 37 is a building, 38 is an entrance door, 39 is a corridor, and 40 and 41 are rooms. 42 is a communication control device,
43 is a data processing device, 44 is a display device, and 45 is an operation input unit.

The sensors 34-1 to 34-10 have various configurations. For example, the entrance / exit gate 36 is provided with an intrusion infrared sensor 34-1 in which an infrared light source and an infrared sensor are arranged to face each other. An intruder passing through the entrance / exit gate 36 is detected during a monitoring time zone such as nighttime and holidays. Further, an entrance magnet sensor 34-2 is provided on the entrance door 38, and the case where the entrance door 38 is opened to enter the building 37 during the monitoring time period is detected. In addition, the infrared sensor 34-
3, 34-4 are provided to detect an intruder passing through the corridor 39 during the monitoring time period. In addition, in the room 40 and 41, intrusion infrared sensors 34-5 and 34-6, fire sensors 34-7 and 34-8 that detect smoke by detecting smoke and temperature, and city gas for cooking and heating. And a gas leak sensor 34-9, 34-10 for detecting propane gas or gas for chemical treatment are provided to detect an intruder in the room 40, 41 during the monitoring time zone and to detect a fire. , Gas leak detection.

The transmitter 35 is provided with the sensors 34-1 to 34-34.
10 and a sensor 34
Based on the detection signals of −1 to 34-10, the monitoring center 31 is automatically called, and when the transmission unit 35 and the monitoring center 31 are connected via the switching network 33, the transmission unit 35 monitors the monitored target. An alarm signal with part information added is transmitted.

In the monitoring center 31, the communication control device 42 receives it, processes it by the data processing device 43 to identify the monitored part and the like, displays the alarm generation monitored part on the display device 44, and stays at the monitoring center 31. A security guard who is in the vicinity of the monitored unit that has transmitted the alarm signal is contacted, and the guard is dispatched to the monitored unit that has transmitted the alarm signal. In the case of an alarm signal indicating a fire, the fire department will also be contacted. Therefore, the monitoring center 31
Thereby, each monitored part 32-1 to 32-n can be remotely monitored.

[0006]

[Problems to be Solved by the Invention] The monitored part 3 of the conventional example
The transmission units 35 of 2-1 to 32-n use the sensors 34-1 to 34-3.
In response to the detection signal 4-10, the monitoring center 31 is automatically called immediately and an alarm signal is transmitted. Therefore, in the case of an emergency detection signal such as the detection signals of the fire sensors 34-7 and 34-8, the alarm signal can be immediately transmitted to the monitoring center 31.

However, in the case of the intrusion infrared sensor 34-1 provided in the entrance / exit gate 36, even when a small animal such as a dog or a cat passes during the monitoring time period, or when a tree or the like is blown by the wind. Even if a detection signal occurs and you are not the actual intruder,
An alarm signal will be transmitted to the monitoring center 31 based on the detection signal. The alarm signal in this case is a false alarm.

If the intrusion magnet sensor 34-2 detects that the entrance door 38 of the building 37 has been opened, small animals such as dogs and cats will not open the entrance door 38.
This is a case where an actual intruder opens the door, and an alarm signal may be immediately transmitted to the monitoring center 31 based on the detection signal. In addition, an intrusion infrared sensor 34 provided in the corridor 39-
3, 34-4 may generate a detection signal even when, for example, a pet such as a dog or a cat passes, and if an alarm signal is transmitted to the monitoring center 31 based on this detection signal, it will be a false alarm.

Since the monitoring center 31 cannot determine whether or not it is an erroneous report, a guard must be dispatched to each of the alarm signals from the monitored units 32-1 to 32-n, and the monitored units are to be sent. If there are a large number of 32-1 to 32-n, there is a problem that unnecessary work is increased due to the false alarm even if the false alarm occurrence probability is low. It is an object of the present invention to prevent false alarms from being sent to the monitoring center by setting false alarm prevention time in correspondence with the types and arrangement positions of various sensors.

[0010]

A remote monitoring system according to the present invention will be described with reference to FIG. 1. The remote monitoring system includes a plurality of monitored units 2-1 to 2-n connected via a switching network 3 to a monitoring center. 1
In the remote monitoring system for monitoring, the monitored parts 2-1 to 2-n are provided with a plurality of types of sensors 4 and an alarm signal to the monitoring center 1 based on the detection signals of these sensors 4. And a plurality of sensors 4 of a plurality of types
The transmission unit 5 refers to the setting table 6 based on the detection signal from the sensor 4, and continues to exceed the false alarm prevention time set in the setting table 6. Monitoring signal 1
It is configured to send an alarm signal to.

[0011]

The setting table 6 is a table in which the false alarm prevention time is set for each sensor 4. For example, the false alarm prevention time for the intruding infrared sensor provided at the entrance / exit gate is long and the false alarm for the intruding magnet sensor provided at the entrance door is set. Set the prevention time short. Therefore, when the detection signal of the intrusion infrared sensor provided in the entrance / exit gate continues for more than the false alarm prevention time set in the setting table 6, the transmission unit 5 differs from that in which a small animal or a tree passes temporarily, When it is determined that the intruder is an actual intruder, the monitoring center 1 is automatically called and an alarm signal is transmitted. Therefore, false alarm can be prevented.

[0012]

EXAMPLE FIG. 2 is an explanatory view of an example of the present invention.
Is a monitoring center, 12-1 to 12-n are monitored units, 13 is a switching network, 14-1 to 14-m are various sensors, 15 is a transmitting unit, 16 is a setting table, 17 is a program and data, etc. Stored memory, 18 is a processor (CPU), 1
9 is an interface unit, 20 is a line control unit (NCU),
21 is a display unit, 22 is an operation input unit for performing setting input operation, 23 is a communication control device, 24 is a data processing device, and 25 is a data processing device.
Is a display device, and 26 is an input operation unit.

The monitored parts 12-1 to 12-n are provided with sensors 14-1 to 14-m of a type suitable for the purpose of detection at various places for the purpose of detecting an intruder or a fire. The interface unit 19 of the transmission unit 15 is connected. Also the transmitter 15
The line control unit 20 has an automatic calling function for the monitoring center 11. Further, the display unit 21 includes the sensors 14-1 to 14-1.
The status of 14-m, the status of alarm signal transmission, etc. can be displayed. Further, the false alarm prevention time setting input information and the like by the operation input unit 22 can be displayed.

Further, the setting table 16 can be constructed by utilizing a partial area of the memory in the transmitting section 15, or can be constructed by attaching the transmitting section 15 externally. In this setting table 16, the sensors 14-1 to 14-
Set the false alarm prevention time for m response. This setting can be performed by the operation input unit 22 or the like when constructing the system, and if the number of monitoring units is increased during system operation, a sensor is arranged in the monitoring unit and the type and position of the sensor are set. Corresponding false alarm prevention time, operation input unit 22
By inputting, the false alarm prevention time corresponding to the sensor is newly set in the setting table 16. When it is necessary to change the false alarm prevention time when the type of sensor is changed, the false alarm prevention time can be updated by designating the sensor number by the operation input unit 22.

For this false alarm prevention time, if the intruding infrared sensor installed outdoors such as the entrance / exit gate is number 1, the detection signal when a small animal passes or a tree is blown is ignored. The prevention time is 500 ms. Further, if the intrusion magnet sensor installed at the entrance door of the building is No. 2, it is necessary to immediately send an alarm signal when it is detected that this entrance door is opened.
Set the false alarm prevention time to 30 ms. If two intruding infrared sensors installed in a building such as a corridor are number 3 and 4, for example, the false alarm prevention time is set to 500 ms. If the fire sensor is number m, it is necessary to immediately send an alarm signal by the detection signal, so the false alarm prevention time is set to 20 ms, for example.

The detection signals of the sensors 14-1 to 14-m are
When the detection signal is added to the interface unit 19 of the transmission unit 15, and the detection signal is applied to the interface unit 19, the processor 18 identifies the number of the sensor that generated the detection signal,
The false alarm prevention time corresponding to the sensor number is read from the setting table 16, and it is monitored whether the detection signal continues beyond the false alarm prevention time. If the false alarm prevention time is exceeded, the line control unit 20 is controlled. Then, the monitoring center 11 is automatically called.

In accordance with the automatic call from the transmitter 15, the switching network 13 calls the monitoring center 11, the communication control device 23 of the monitoring center 11 responds by the automatic response function, and the line controller 20 of the transmitter 15 is called. When the response of the monitoring center 11 is confirmed, transmits an alarm signal to which the monitored portion information formed by the processing of the processor 18 is added.

In the monitoring center 11, the alarm signal received via the communication control unit 23 is processed by the data processing unit 24, and the display unit 25 displays the presence / absence of an alarm corresponding to the monitored portion or sends the alarm signal. Displays the name and address of the monitored part. Based on that, the guards will be contacted.

FIG. 3 is a flow chart of the embodiment of the present invention, in which the processor 18 judges whether or not the detection signal of the sensor is applied (a), and the detection signal is the interface unit 1.
When it is input to 9, it is determined whether or not it is the first sensor S1 (b), and if it is not the first sensor S1, it is determined whether or not it is the second sensor S2 (e). Similarly, it is determined whether or not the sensor is the m-th sensor Sm. Then, the process returns to step (a).

When it is determined that the sensor S1 is the first sensor S1 when there is a sensor input, the processor 18 refers to the setting table 16 and reads out the false alarm prevention time of the first sensor S1, for example, 500 ms. It is determined whether or not the detection signal of the sensor S1 of No. 1 continues beyond the false alarm prevention time of 500 ms (c), and when the detection signal of the sensor S1 exceeds the false alarm prevention time of 500 ms, the intrusion infrared ray is detected. Assuming that the intruder is detected by the sensor, an alarm signal based on the detection signal of the sensor S1 is sent to the monitoring center 11
(D).

Further, not the detection signal of the first sensor S1
When it is determined that it is the detection signal of the second sensor S2, 30 ms set as the false alarm prevention time of the second sensor S2 of the setting table 16 is read, and the detection signal of the second sensor S2 is the false alarm prevention of 30 ms. It is determined whether or not the time has continued (f), and when the detection signal of the sensor S2 exceeds the false alarm prevention time of 30 ms, it is determined that the intruder is detected by the intrusion magnet sensor. An alarm signal based on the detection signal is sent to the monitoring center 11
(G).

As described above, the monitored parts 12-1 to 12-
If the false alarm prevention time differs depending on the scale and type of n and the type and position of the installed sensor, the sensor 1
Set false alarm prevention time for 4-1 to 14-m correspondence Table 1
When the detection signal is set to 6, and the detection signal continues beyond this false alarm prevention time, an alarm signal is sent to the monitoring center 11 on the assumption that the target detected object is detected. Can be prevented.

[0023]

As described above, according to the present invention, the monitored parts 2-1 to 2-n include a plurality of sensors 4 of a plurality of types.
The transmitter 5 and the setting table 6 in which the false alarm prevention time corresponding to the sensor 4 is set are provided, and the transmitter 5 refers to the setting table 6 based on the detection signal from the sensor 4 to prevent the false alarm corresponding to the sensor 4. When the detection signal exceeds the time, it is determined that the detection signal is correct and an alarm signal is sent to the monitoring center 1. If the set false alarm prevention time is not exceeded, it is determined that the detection purpose is not actually detected, and no alarm signal is sent to the monitoring center 1. Therefore, even if the detection signals of a plurality of sensors are simultaneously input to the transmission unit 5, only when the actual detection purpose is detected, the monitoring center 1
Since an alarm signal can be sent to, there is an advantage that false alarms can be prevented.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is an explanatory diagram of an example of the present invention.

FIG. 3 is a flowchart of an embodiment of the present invention.

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 Monitoring Center 2-1 to 2-n Monitored Part 3 Switching Network 4 Sensor 5 Transmitter 6 Setting Table

Claims (1)

[Claims] 1. A remote monitoring system for monitoring a plurality of monitored units (2-1 to 2-n) connected via a switching network (3) in a monitoring center (1), wherein The monitoring unit (2-1 to 2-n) includes a plurality of sensors (4) of a plurality of types and the monitoring center (1) based on a detection signal of the sensor (4).
And a setting table (6) in which a false alarm prevention time is set for each of the plurality of types of sensors (4). The setting table (6) is referred to on the basis of the detection signal from the sensor (4), and when the detection signal continues beyond the false alarm prevention time set in the setting table (6), the monitoring center (1) A remote monitoring system characterized by being configured to send an alarm signal to the.