JPS62285199A - central monitoring device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention Industrial Field of Application Relating to a centralized monitoring device that transmits abnormality information such as fire, crime prevention, gas leakage, equipment failure, etc. detected by a plurality of terminal devices to a center device. .

2. Description of the Related Art In general, a centralized monitoring system that automatically reports abnormality information to a center includes a signal transmission path monitoring section, an abnormal signal detection section, and a reporting section on the terminal device side.

When an abnormal state is detected and the signal transmission path monitoring section determines that the transmission path to the center is usable, the reporting section transmits the abnormality information to the center.

At this time, the first reporting unit reports the latest information obtained as abnormality information.

The problem that the invention seeks to solve However, in such a centralized monitoring device.

In a state where the signal transmission path is unavailable, that is, during a period when other terminal devices and the center device are communicating.

If the abnormal information that the terminal device was trying to transmit is canceled or changed to another abnormal information, the latest information will be transmitted, but the previous information will disappear without being transmitted to the center device. There is a problem with putting it away. Therefore, there were situations in which the center could not manage the progress of the abnormality occurrence status of each terminal.

The present invention solves these conventional problems, and provides a centralized monitoring device in which abnormal information detected by each terminal device is always reported to a central device, and the progress of the situation can be fully grasped. It is something.

Means for Solving the Problems In the centralized monitoring device of the present invention, each terminal device includes a signal transmission path monitoring section, a timekeeping section, and an abnormal state detection section.

and a reporting unit including a plurality of abnormality information holding units that hold abnormality signals from the detection unit.The central monitoring device of the present invention is configured to: When an abnormality state is detected,
The information is held in the abnormality information holding section within the reporting section, and at the same time, time information from the timekeeping section is also added and stored. When the signal transmission path is available, the 1-notification section notifies the center device of the abnormality information stored in the abnormality information holding section and the 1-hour information together with the identification number assigned to the terminal. By the way, when information exists in one of the plurality of error information holding sections, the signal transmission path remains unusable due to other terminals, that is, the busy state continues, and during this time, a new If an abnormal condition occurs,
The information is stored in an abnormality information storage section different from the one described above. Thereafter, when the signal transmission line becomes usable, each piece of information in the above-mentioned abnormality information holding section is sequentially reported to the center together with time information.

In this way, even if the abnormal state changes while the signal transmission line is busy, the abnormality information that has occurred will be reliably transmitted to the center device. In addition, time information that allows you to know the time when the abnormal state occurred and the time when the normal state returned is transmitted together with each abnormality information, making it convenient for the center to manage the terminals. will be greatly improved.

Embodiment Hereinafter, a central monitoring device according to an embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.
1 center device, 2-1, 2-2°...2-n
A plurality of terminal devices are connected via signal transmission paths. The signal transmission path may be a dedicated line or a general telephone line. Each of the terminal devices includes a signal transmission path monitoring section 3, a timekeeping section 4, an abnormal state detection section 5, 6-1
, 6-2, 6-3 three abnormality information holding units, and
It is composed of seven reporting sections including the abnormality information holding section. 3 pB-Kou 吋觻世蔗IGod-・Tsuka Δ short story rhyme IF
Detects whether the transmission line is busy or not. The clock section 4 has a clock function and transmits time information to the reporting section 7. When an abnormality is detected by the abnormal state detection unit 5, the signal is transmitted to the reporting unit 7, and the reporting unit 1 stores the above-mentioned abnormality information together with the time information at the time of occurrence of the event in one of the plurality of abnormality information holding units. Store them one after another in one of them.

That is, when there is information in 6-1 that has not been reported to the center device at the previous point in time, it is stored in 6-2.

After that, if the signal transmission path is not busy and the information in 6-1 is transmitted from this terminal device to the center device, 6-2
The friend information stored in is moved to area 6-1 and then transmitted to the center device. After that, if there is no change in the event, the terminal device does not report the same information to the center. In this way, all abnormality information that has occurred is transmitted from each terminal device to the center device.

Moreover.

Each event is reliably transmitted along with the time information when it occurred.

The center device also has a master clock section 9 and a terminal information management section 8 that sends and receives signals to and from terminal devices and manages received information. Along with the abnormality information from the predetermined terminal device,
When the reported time information is transmitted, if there is a difference of more than a predetermined value from the time of the main timer, the main timer information is transmitted to the predetermined terminal device in order to match the timer of the terminal device with the main timer. It also communicates.

FIG. 2 is an example of a specific transmission protocol for information to be reported from each terminal device to the center device according to the present invention. (8 is the protocol configuration when transmitting the abnormal information stored in 6-1 in FIG. 1, and (protocol configuration is when the trout transmits the abnormal information stored in 6-2.

Between rSTXJ, which indicates the beginning of the message, and ETXJO, which indicates the end of the message, the ID assigned to each terminal, that is, the identification number, or the telephone number when using the line, is shown, followed by abnormality information I and (2) Then, time information I and H are attached so that the time when each occurrence can be recognized.

The time information may be the time of occurrence measured by the timer of the terminal device, or the difference between the current time when reporting from each terminal and the time of occurrence, that is, how many minutes before the first report occurred. It may also be information indicating. As explained later, if signals are transmitted using elapsed time information instead of absolute time, even if there is a difference in clock time between the center and each terminal, the center can take the lead in correcting the abnormality occurrence time. .

Effects of the Invention As described above, the central monitoring device of the present invention includes a signal transmission line monitoring section, a timekeeping section, an abnormal state detection section, and an abnormality detection section from the detection section on each terminal device side that reports to the center device. It is composed of a reporting unit including a plurality of abnormality information holding units that hold signals, and therefore the following effects can be obtained.

(1) Information indicating the abnormal state detected by each terminal device is stored in the storage unit until it is reported to the central device, and even if the contents of the abnormal state change during the process, the information indicating the abnormal state detected by each terminal device is stored together with time information that shows the time of occurrence. Since everything is reliably transmitted, the center side can grasp changes in the status of each terminal over time.

(2) Even if the time indicated by the clock function provided at the center and each terminal is not corrected, the elapsed time after the occurrence of the event is recognized, which eliminates management inconveniences and allows clock correction information to be This eliminates the need for signal transmission for system checks.

(3) When abnormality information is transmitted, if the main timekeeping information of the center device and the timekeeping information of the general terminal device are combined,
Corrections are made on the terminal device side each time, and there is no need for correction on the central device, which reduces the burden of managing a large number of terminals.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a central monitoring device showing an embodiment of the present invention, and FIGS. 2(A) and 2(B) are diagrams showing transmission protocols containing different abnormality information. DESCRIPTION OF SYMBOLS 1... Center device, 2... Terminal device, 3... Signal transmission path monitoring section, 4... Timing section, 5... Abnormal condition detection unit, 6...
Abnormality information holding unit, 7... Reporting unit.

Claims (5)

[Claims] (1) A center device and a plurality of terminal devices are connected, and each terminal device has a signal transmission path monitoring section, a timekeeping section, an abnormal state detection section, and a plurality of terminal devices that hold abnormal signals from the detection section. It consists of a reporting section including an abnormality information holding section, and
The center device is a central monitoring device that has a terminal information management section and a master clock section. (2) Each abnormal state detected by the abnormal state detection section continues to be held in the abnormal information holding section until the transmission of each information from each terminal device to the center device is completed. central monitoring equipment. (3) The reporting unit of each terminal device sets the time when the abnormal state detection unit detects the abnormality using the signal from the clock unit, and includes it as time information in the transmission protocol of the detection information to be reported to the center device. A central monitoring device according to claim 2. (4) The centralized monitoring device according to claim 2, wherein the time information in the transmission protocol to the center device is the time difference between the abnormal state occurrence time and the current time. (5) Add the timekeeping unit information at the time of reporting to the transmission protocol from each terminal device, and when the time difference from the main clock unit at the center device exceeds a predetermined value, the time information from the main clock unit is sent to the approximate terminal. A centralized monitoring device according to claim 1, which transmits data and corrects a timekeeping section.