JPH07200979A - Monitoring system equipped with terminal abnormality monitoring device - Google Patents

Abstract

PURPOSE:To find out the abnormality of a detector in early stages by judging that abnormality occurs in the detector when the number of detection signals sent from the detector to a terminal abnormality monitoring device exceeds a threshold value. CONSTITUTION:The terminal abnormality monitoring device 4 outputs a clock start signal from a central processing part 4 to a timer part 47, and starts clock by clearing the timer part 47 and all the signal number storage parts 43, 44, and 45. When a fire signal from the detector 1 is received, the central processing part 42 stores the number in which one is added to the number of signals in the signal number storage part 43 storing the receiving number of detection signals from the detector 1 as the number of reception signals again in the signal number storage part 43. When the nunof reception signals exceeds, for example, the threshold value of 20 times, a terminal abnormality signal outputted from a terminal abnormality signal generating part 8 and the address number of the detector 1 are transmitted to a monitoring center. Simultaneously, a transmission prohibition signal which prohibits the transmission of the detection signal to the center even when it is received from the detector 1 is transmitted to the detector 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor installed in a security area for detecting information relating to air conditioning, lighting, fire, intrusion, etc. of the security area, and a detection signal from the sensor for monitoring a security company via a telephone line. The present invention relates to a detection device that transmits to a center, and a monitoring system that monitors an abnormality in a guarded area such as a fire or an intrusion based on received information received by a monitoring device installed in a monitoring center.

[0002]

2. Description of the Related Art Conventionally, there have been the following types of monitoring systems for detecting an abnormality in a security area and notifying it to a monitoring center of a security company. A sensor that detects information about air conditioning, lighting, fire, intrusion, etc., and a detection device that transmits that information are installed in the security area, and security information from the detection device is received, and an abnormality in the security area is detected by the received detection signal. A monitoring device that outputs information is provided in the monitoring center.

With the above arrangement, all detection signals detected by the sensor are transmitted to the monitoring center of the security company via the telephone line by the detecting device and received by the monitoring device installed in the monitoring center. As for the monitoring device, the received signal is
When the signal indicates the state of the security area such as entry and exit, the type of the detection signal and the detection device that transmitted the detection signal are displayed on the monitoring device installed in the monitoring center. However, if the received signal is a signal indicating an abnormality in the security area such as a fire or intrusion, an alarm is output and the security officer of the security company goes to the security area to check the situation and also to the fire department, police, emergency contact I try to contact them.

However, the detection device sometimes fails for some reason and continues to transmit a detection signal. In such a case, in the conventional monitoring system, if the detection signal is an abnormal signal, an alarm is output and an abnormality of the terminal is likely to be detected, but the detection signal is a security area such as air conditioning, lighting, entrance and exit. If the alarm is not output with the signal indicating the state of 1, the detection of the detection device that continues to transmit the detection signal takes time. In addition, the detection device shall continue to send a signal after the detection device fails and starts transmitting security information to the monitoring device until the observer notices an abnormality in the detection device and repairs or replaces the detection device. become. Then, in the monitoring system, since the detection device continues to transmit to the monitoring device through the telephone line, an unexpectedly high telephone charge may be charged.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a terminal abnormality detection device receives a detection signal from a detection device installed in a security area. The terminal abnormality detection device transmits the terminal abnormality signal and the address number of the detection device determined to be abnormal to the monitoring center when a detection signal is received a predetermined number of times or more within a predetermined time from any one of the detection devices. To do. In the monitoring center, the monitoring device receives the signal from the terminal abnormality detection device and notifies the abnormality of the detection device. The purpose of this is to detect an abnormality in the detection device at an early stage and take prompt action. Another object of the present invention is to prevent the monitoring device from receiving a detection signal from a detection device that is determined to be abnormal, thereby preventing an expensive telephone charge.

[0006]

In order to solve the above-mentioned problems, the present invention provides a detection device in which a sensor detects information relating to air conditioning, lighting, fire, intrusion, etc. in a security area and sends a detection signal to a monitoring device. Installed in the security area, the detection signal from the detection device is received by the monitoring device installed in the monitoring center of the security company via the telephone line, and it is judged from the received information whether there is an abnormality in the security area, In a monitoring system that outputs an alarm when it is determined that an abnormality has occurred,
A signal number storage unit that is provided so as to correspond to the detection device, stores the number of received signals of detection signals from the corresponding detection device, and clears all the signal numbers at the same time when the timer unit starts timing, and a central processing unit. It is cleared by receiving the time measurement start signal from the department, starts the time measurement, sends a time measurement end signal to the central processing unit after a predetermined time measurement, and is cleared when the time measurement start signal is received again, and starts the time measurement. When a signal count storage unit counts the number of signals equal to or more than a predetermined number, the detection unit corresponding to the signal count storage unit determines that there is an abnormality, and notifies the monitoring device of a terminal abnormality signal. A terminal abnormality detection device is provided that transmits the address number of the detection device determined to be abnormal to the monitoring center and sends a transmission prohibition signal to the detection device determined to be abnormal to prohibit the transmission of detection signals to the monitoring device. .

[0007]

According to the monitoring system provided with the terminal abnormality monitoring device of the present invention, in the terminal abnormality monitoring device, any one of the signal number storage units of the detection signals transmitted from the detection device installed in the security area has a predetermined number. When the number of signals above is counted, the detection device corresponding to the signal number storage unit is determined to be abnormal, and the terminal abnormality signal and the address number of the detection device determined to be abnormal are transmitted to the monitoring device, causing a failure. The detected device can be found early. Further, by transmitting a transmission prohibition signal for prohibiting the transmission of the detection signal to the monitoring device to the detection device determined to be abnormal, it is possible to prevent the detection signal from the faulty detection device from being repeatedly transmitted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a terminal abnormality monitoring device which detects an abnormality of a detection device according to a reception state of security information from a detection device which transmits information of a security area and transmits a terminal abnormality signal to the monitoring device. It is a block diagram of the provided monitoring system. FIG. 2 shows a flowchart of the operation of the terminal abnormality monitoring device.

In FIG. 1, the detection devices 11, 21, 31 installed in the security areas 1, 2, 3 detect the information of the respective security areas and transmit the information to the terminal abnormality monitoring device 4.

The detection signal received by the terminal abnormality monitoring device 4 is transmitted to the central processing unit 42 via the interface 41. The central processing unit 42 determines from which security zone the received detection signal is transmitted, and the reception of the signal number storage units 43, 44 and 45 storing the number of signals from the corresponding detection devices, respectively. 1 is added to the number of signals in the signal number storage unit corresponding to the signal. At the same time, the signal transmission unit 46 transmits a detection signal. When the central processing unit 42 transmits a time count start signal to the timer unit 47, the time counts of all the signal number storage units 43, 44, 45 and the timer unit 47 are cleared, and the timer unit 47 starts counting a predetermined time. To do. After the elapse of a predetermined time, the timer unit 47 transmits a time measurement end signal to the central processing unit 42. Then, the central processing unit 42 transmits a time measurement start signal, clears the time measurement of the timer unit 47, and restarts the time measurement. Upon receiving the detection signal, the central processing unit 42 confirms whether the number of signals obtained by adding 1 to the number of signals in the signal number storage unit corresponding to the received signal is equal to or more than a predetermined value, and is equal to or more than the predetermined value. If the terminal abnormal signal is generated, the terminal abnormal signal generation unit 48 transmits the terminal abnormal signal and the transmission prohibition signal generation unit 49 transmits the transmission prohibition signal to the signal transmission unit 46 via the interface, and the signal transmission unit 46 transmits the terminal abnormal signal to the monitoring center 5.
To the corresponding detection device.

In the monitoring center 5, the detection signals are received by the central processing unit 52 via the interface 51, and all the received detection signals are transmitted to the display unit 54 and displayed. At the same time, the received detection signal is an abnormal signal such as fire or intrusion,
If it is a terminal abnormality signal, the alarm generation unit 53 is caused to output an alarm.

Next, an embodiment of the present invention will be described with reference to the flowchart of FIG.

First, the detection device 1 installed in the security area 1
The case where a fire is detected from 1 will be described. When the terminal abnormality monitoring device 4 starts the operation, the central processing unit 42 outputs a clock start signal to the timer unit 47, and the timer unit 47.
Then, all the signal number storage units 43, 44, 45 are cleared (step 1), and clocking is started (step 2). at the same time,
The central processing unit 42 determines whether or not the detection signal is received (step 3). Since the fire signal from the detection device 1 is received, the central processing unit 42 adds 1 to the number of signals in the signal number storage unit 43 that stores the number of detection signals received from the detection device 1. Is again stored in the signal number storage unit 43 as the number of received signals from the detection device 1 (step 4). The central processing unit 42 determines whether the number of received signals exceeds 20 times when 1 is added to the number of signals stored in the signal number storage unit 43 (step 5). If the number of times is 20 or more, the terminal abnormality signal output from the terminal abnormality signal generator 48 and the address number of the detection device 1 are transmitted to the monitoring center (step 6). At the same time, the detection device 1
Even if the detection signal from the device is received, a transmission prohibition signal that prohibits transmission to the monitoring center 5 is transmitted to the detection device 1 (step 7). At this time, it is determined whether or not 20 minutes or more have elapsed since the timer unit 47 started measuring time (step 8). If 20 minutes have not elapsed, the reception of the detection signal is continued. However, if 20 minutes have elapsed, the central processing unit 42 outputs the time counting start signal again, clears the timer unit 47 and all the signal number storage units 43, 44, 45 (step 1), and the timer unit The timing of 47 is started (step 2). If it does not exceed 20 times, the fire signal and the address signal of the detection device 1 are transmitted to the monitoring center (step 9), and the same as when the detection signal is received 20 times or more,
It is detected whether or not 20 minutes or more have elapsed since the timer unit 47 started measuring time (step 8). In the monitoring center 5, since the received detection signal is a fire signal, the central processing unit 5
2 is a detection unit 1 that has detected a fire and a fire signal display unit 54
Is displayed, and an alarm generation signal is output to the alarm generation unit 53 to output an alarm. Based on this warning and the display on the display unit 54, the fire department is requested to carry out fire fighting activities. In addition, the guard of the security company goes to the security area 1 and confirms the state of the security area 1.

Next, the detection device 1 installed in the security area 1
A case where entry / exit information is detected from 1 will be described.
When the operation of the terminal abnormality monitoring device 4 is started, the central processing unit 42 outputs a clocking start signal to the timer unit 47, and clears the timer unit 47 and all the signal number storage units 43, 44, 45 (step 1). , Start timing (step 2). At the same time, the central processing unit 42 determines the presence or absence of a detection signal (step 3). Since the entrance / exit information is received from the detection device 11, the central processing unit 42 adds 1 to the number of signals in the signal number storage unit 43 that stores the number of detection signals received from the detection device 11. Is stored again in the signal number storage unit 43 as the number of received signals from the detection device 11 (step 4). The central processing unit 42 determines whether or not the number of received signals exceeds 20 when 1 is added to the number of signals stored in the signal number storage unit 43 (step 5). If the number of times is 20 or more, the terminal abnormality generation unit 48 transmits the terminal abnormality signal and the address number of the detection device 11 to the monitoring center 5 (step 6), and even if the detection signal from the detection device 11 is received. A transmission prohibition signal for prohibiting transmission to the monitoring center 5 is transmitted to the detection device 11 (step 7). Similar to the case where a fire is detected, it is judged at this time whether the timer unit 47 has started counting time (step 8), 20
If the minutes have not elapsed, the detection signal continues to be received. However, if 20 minutes or more have elapsed, the central processing unit 42 outputs the time measurement start signal again, and the timer unit 47
Then, all the signal number storage sections are cleared (step 1), and the timer section 47 starts counting time (step 2). If it does not exceed 20 times, the entry / exit information and the address signal of the detection device 11 are transmitted to the monitoring center (step 9), and the timer unit 47 keeps the same time as when the detection signal is received 20 times or more. It is detected whether 20 minutes or more have elapsed since the start (step 8). In the monitoring center 5, since the received detection signal is the entry / exit information, the central processing unit 52 causes the display unit 54 to display the detection device 11 that has detected the entry / exit and the entry / exit information.

The same applies when a detection signal such as a fire or entry / exit information is transmitted from the detection device 21 or 31 installed in the monitoring area 2 or 3. Detection device 21 or 31
When the detection signal is received from the detection device 21 or 31
The number of signals received from the detection device 21 or 3 is obtained by adding 1 to the number of signals in the number-of-signals storage unit 44 or 45 that stores the number of received signals from the detection device 21 or 3.
It is stored again in step 5 (step 4). At this time, it is judged whether or not the number of received signals exceeds 20 (step 5). When it is 20 times or more, the terminal abnormal signal from the terminal abnormal signal generator 48 and the detection device 21 or 31
To the monitoring center 5 (step 6), and transmits a transmission prohibition signal to the detection device 21 or 31 for prohibiting transmission to the monitoring center 5 even if the detection signal from the detection device 21 or 31 is received. (Step 7). At this time, 20 minutes after the timer unit 47 starts counting time,
Judge whether or not more than minutes have passed (step 8), 2
If 0 minutes or more has not passed, the reception of the detection signal is continued. However, if 20 minutes or more have passed, the central processing unit 42 outputs the time counting start signal again, and the timer unit 47 and all the signal number storage units 43, 44, 45 are cleared (step 1), and the timer is started. The timing of the section 47 is started (step 2). If it does not exceed 20 times, the detection signal and the address signal of the detection device 21 or 31 are transmitted to the monitoring center 5 (step 9), and the timer unit 47 keeps the same time as when the detection signal is received 20 times or more. Since starting 2
It is detected whether 0 minutes or more has passed (step 8). In the monitoring center 5, a display regarding reception of a detection signal is displayed on the display unit 54, and an alarm is output from the alarm generation unit 53 according to the type of the detection signal.

[0016]

As described above, in the monitoring system provided with the terminal abnormality monitoring device of the present invention, the detection device may fail for some reason and continue to send the detection signal from the security area. Even if the terminal abnormality monitoring device receives the detection signal once and receives a predetermined number or more of detection signals within the predetermined time, the detection device is determined to be abnormal, and the detection device that is determined to be abnormal transmits the detection signal to the monitoring center. Banned.

This makes it possible to detect a faulty detection device at an early stage and take prompt action, and to prevent a detection signal from the faulty detection device from being repeatedly transmitted, thereby preventing an expensive telephone bill from being charged. it can.

[Brief description of drawings]

FIG. 1 is a block diagram of a monitoring system of the present invention.

FIG. 2 is a flowchart showing the operation of the terminal abnormality monitoring device of the monitoring system of the present invention.

[Explanation of symbols]

 1,2,3 Security area 11,21,31 Detection device 4 Terminal abnormality monitoring device 41 Interface 42 Central processing unit 43,44,45 Signal number storage unit 46 Signal transmission unit 47 Timer unit 48 Terminal abnormality signal generation unit 49 Transmission prohibited Signal generation unit 5 Monitoring center 51 Interface 52 Central processing unit 53 Alarm generation unit 54 Display unit

Claims (2)

[Claims] 1. A detection device installed in a security area for detecting information on fire, intrusion, air conditioning, lighting, etc. in the security area and a monitoring center of a security company, and the information from the detection device is transmitted via a telephone line. In a monitoring system equipped with a monitoring device that receives an error and monitors an abnormality in the guarded area, it is cleared by a timing start signal from the central processing unit, starts timing, and after a predetermined period of time, centrally processes the timing end signal. It is provided to correspond to each of a plurality of connected detection devices and a timer unit that is cleared when the timekeeping start signal is received again and restarts timekeeping. When the number of received signals of detection signals is stored and the number of stored signals is cleared at the same time as the timer starts counting, when the number of any of the number of signal storage exceeds a predetermined number. end A terminal abnormality signal generator that outputs a terminal abnormality signal, and when normal, sends all detection signals to the monitoring device of the above monitoring center, and when a signal is output from the terminal abnormality signal generator, the monitoring device A signal transmission unit that transmits the terminal abnormality signal and the address number of the detection device that is determined to be abnormal is provided, and when one of the signal number storage units counts the number of signals equal to or more than a predetermined number, the detection corresponding to the signal number storage unit is performed. A monitoring system with a terminal abnormality monitoring device, which determines that the device is abnormal and transmits a terminal abnormality signal to the monitoring device. 2. A detection device installed in a security area for detecting information on fire, intrusion, air conditioning, lighting, etc. in the security area, and a detection device installed in a monitoring center of a security company and transmitting information from the detection device via a telephone line. In a monitoring system equipped with a monitoring device that receives an error and monitors an abnormality in the guarded area, it is cleared by a timing start signal from the central processing unit, starts timing, and after a predetermined period of time, centrally processes the timing end signal. It is provided to correspond to each of a plurality of connected detection devices and a timer unit that is cleared when the timekeeping start signal is received again and restarts timekeeping. When the number of received signals of detection signals is stored and the number of stored signals is cleared at the same time as the timer starts counting, when the number of any of the number of signal storage exceeds a predetermined number. end A terminal abnormality signal generator that outputs a terminal abnormality signal, a transmission prohibition signal generator that outputs a transmission prohibition signal when the value in any of the signal number storage units exceeds a predetermined number, and when all are normal, all Sending a detection signal to the monitoring device of the above-mentioned monitoring center, and sending a signal to the monitoring device when the signal is output from the terminal abnormality signal generation unit, and sends the terminal abnormality signal and the address number of the detection device determined to be abnormal. When a signal count storage unit counts the number of signals equal to or more than a predetermined number, it is determined that the detection device corresponding to the signal count storage unit is abnormal, and a terminal abnormality signal is transmitted to the monitoring device. A monitoring system with a terminal abnormality monitoring device, comprising: a terminal abnormality detection device that sends a transmission prohibition signal that prohibits transmission of a detection signal to the monitoring device to a detection device that is determined to be abnormal.