JPH0734240B2 - Central monitoring device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a centralized monitoring device for transmitting abnormality information such as fire, crime prevention, gas leak, equipment failure, etc. detected by a plurality of terminal devices to a center device.

Conventional technology In general, a centralized monitoring system that automatically reports abnormality information to a center has a signal transmission path monitoring unit, an abnormality signal detection unit, and a notification unit on the terminal device side, and an abnormal state is detected.
When the signal transmission line monitoring unit determines that the transmission line to the center is available, the notification unit transmits the abnormality information to the center. At this time, the reporting unit reports the latest information obtained as the abnormality information.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a centralized monitoring device, when the signal transmission path is unavailable, that is, while the terminal device communicates with another terminal device center device, The abnormal information you were trying to transmit was canceled, or
Although the latest information is transmitted when the abnormal information is changed to another abnormal information, there is a problem that the previous information disappears without being transmitted to the center device. Therefore, there was a situation where the center could not manage the progress of the abnormality occurrence status of each terminal.

The present invention solves such a conventional problem and provides a centralized monitoring device capable of notifying the center device of abnormality information detected by each terminal device without fail and sufficiently grasping the progress of the situation. Is.

Means for Solving Problems The centralized monitoring device of the present invention comprises a center device and a plurality of terminal devices, and each of the terminal devices includes a signal transmission path monitoring unit, a clock unit, an abnormal state detection unit, The center unit has at least a terminal information management unit and a main timekeeping unit, and the notification unit of each terminal device is composed of a notification unit including a plurality of abnormality information holding units that hold an abnormal signal from the detection unit. , The time when the abnormal state detection unit detects an abnormality or the time difference between the abnormal state occurrence time and the current time is set by the signal of the timekeeping unit and included as time information in the transmission protocol of the detection information to notify the center device. If the time information at the time of notification is added and transmitted, and the terminal information management unit of the center device determines that the time information is different from the time of the main timekeeping unit by a predetermined value or more, the time information of the main timekeeping unit The applicable terminal It is transmitted to the device to correct the clock section.

Action The centralized monitoring device of the present invention, when an abnormal state is detected,
The information is held in the abnormality information holding unit in the notification unit, and at the same time, the time information from the timer unit is added and stored. When the signal transmission path is available, the reporting unit reports the abnormality information stored in the abnormality information holding unit and the time information to the center device together with the identification number assigned to the terminal. By the way, in a state in which information is present in one of the plurality of abnormal information holding units, the signal transmission path cannot be used for another terminal, that is, the busy state continues. When an abnormal condition occurs,
Information is stored in an abnormality information holding unit different from the above. After that, when the signal transmission path becomes usable, each information of the above-mentioned abnormality information holding unit is sequentially notified to the center together with time information and time information at the time of notification.

By doing so, even if the abnormal state changes while the signal transmission path is busy, the generated abnormal information is reliably transmitted to the center device side. Moreover, the time information at which the abnormal state occurs and the time at which the abnormal state is restored is known is transmitted together with the respective abnormal information. Further, the time information at the time of the notification transmitted at the same time may be compared with the time information of the main timekeeping section of the center device, and if there is a large deviation, correction may be added. Therefore, the convenience in managing the terminal on the center side is greatly improved.

Embodiment A centralized monitoring apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.
A plurality of terminal devices 2-1, 2-2, ... 2-n are connected to one center device via a signal transmission path. A dedicated line may be used as the signal transmission line, or a general telephone line may be used. Each of the terminal devices includes three signal transmission line monitoring units,
It is composed of a timekeeping unit 4 and an abnormal state detection unit 5 and three abnormal information holding units 6-1, 6-2 and 6-3, and 7 reporting units including the abnormal information holding unit. The signal transmission line monitoring unit 3 detects whether the signal transmission line used for reporting to the center is in a busy state. The timekeeping unit 4 has a clock function and transmits time information to the reporting unit 7. When an abnormality is detected by the abnormal state detection unit of No. 5, the signal is transmitted to the notification unit of the above-mentioned No. 7, and the notification unit of the abnormal information holding unit having a plurality of the above-mentioned abnormality information together with the time information at the time of the event occurrence. Sequentially store 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 time point, it is stored in 6-2. After that, if the signal transmission line is not busy and the information of 6-1 is transmitted from the terminal device to the center device, the information stored in 6-2 is 6-
It is moved to area 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 the abnormal information that has occurred is transmitted from each terminal device to the center device. Moreover, it is transmitted reliably along with the time information when each event occurs.

Further, the center device has a main clock unit 9 and a terminal information management unit 8 for transmitting / receiving signals to / from the terminal device and managing received information. With the abnormal information from a predetermined terminal device,
When the reported time information is transmitted, if there is a difference of at least a predetermined value from the time of the main timekeeping unit, the main timekeeping unit information is sent to the predetermined terminal device in order to match the timekeeping unit of the terminal device with the main timekeeping unit. It is also transmitted.

FIG. 2 is an example of a specific transmission protocol of information notified from each terminal device of the present invention to the center device. (A)
2 is a protocol configuration when transmitting the abnormality information stored in 6-1 of FIG. 1, and (B) is a protocol configuration when transmitting the abnormality information stored in 6-2. Each shows the ID assigned to each terminal between "STX", which indicates the beginning of the message, and "ETX," which indicates the end, that is, the identification number or telephone number when using the line, followed by the anomaly content. The abnormal information I and II and the time information I and II by which the time when each occurred can be recognized are attached. Furthermore, when transmitting the information of 6-1 the current time information of the clock unit 4 is added to the time information I.

The time information may be the time of occurrence measured by the timekeeping unit of the terminal device, or the difference between the current time and the time of occurrence when making a notification from each terminal, that is, how many minutes before the time of the notification. It may be information indicating. If the signal is transmitted not by the absolute time but by the elapsed time information like the latter, even if there is a difference in the clock time between the center side and each terminal side, the center can correct the abnormality occurrence time. .

EFFECTS OF THE INVENTION As described above, in the centralized monitoring device of the present invention, each terminal device has a plurality of signal transmission path monitoring units, a time counting unit, an abnormal state detection unit, and a plurality of abnormal signals from the detection unit. The center device has at least a terminal information management unit and a main timekeeping unit, and the notification unit of each terminal device has a time or a time when the abnormal state detection unit detects an abnormality. The time difference between the abnormal state occurrence time and the current time is set by a signal from the timekeeping section, included as time information in the transmission protocol of the detection information to be notified to the center device, and the time information at the time of notification is added and transmitted. However, when the terminal information management unit of the center device determines that the time information is different from the time of the main timekeeping unit by a predetermined value or more, the time information of the main timekeeping unit is transmitted to the corresponding terminal device to correct the timekeeping unit. It was a configuration to do Therefore, the following effects can be obtained.

Information indicating the abnormal state detected by each terminal device is stored in the holding unit until it is notified to the center device, and even if the content of the abnormal state changes on the way, with the time information that the occurrence time is known, surely, Since everything is transmitted, the center side can grasp the situation change of each terminal over time. Further, when the abnormality information is transmitted, the main timekeeping information of the center device and the timekeeping information of the corresponding terminal device are compared,
When there is a large deviation, the terminal device side is corrected each time, so it is possible to manage many terminals with accurate time information.

[Brief description of drawings]

FIG. 1 is a block diagram of a centralized monitoring apparatus showing an embodiment of the present invention, and FIGS. 2 (A) and 2 (B) are diagrams showing a transmission protocol including different abnormality information. 1 ... Center device, 2 ... Terminal device, 3 ... Signal transmission line monitoring unit, 4 ... Time measuring unit, 5 ... Abnormal state detection unit, 6 ...
… Abnormality information storage unit, 7 …… Notification unit.

Continuation of the front page (72) Inventor Hosui Ikukawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-55-34791 (JP, A) JP-A-61-91797 (JP) , A) JP-A-60-239819 (JP, A)

Claims (2)

[Claims] 1. A center device and a plurality of terminal devices, wherein each of the terminal devices holds a signal transmission line monitoring unit, a timekeeping unit, an abnormal state detection unit, and an abnormal signal from the detection unit. The reporting unit including the abnormal information holding unit of the above, and the center device has at least a terminal information management unit and a main timekeeping unit, and the reporting unit of each terminal device has a time when the abnormal state detection unit detects an abnormality. Alternatively, the time difference between the abnormal state occurrence time and the current time is set by a signal from the timekeeping section, and is included as time information in the transmission protocol of the detection information to be notified to the center device, and time information at the time of notification is added. When the terminal information management unit of the center device determines that the time information is different from the time of the main timekeeping unit by a predetermined value or more, the time information of the main timekeeping unit is transmitted to the corresponding terminal device and the timekeeping unit is corrected. Centralized monitoring Location. 2. The abnormal state detected by the abnormal state detecting section is continuously held in the abnormal information holding section until transmission of each information from each terminal device to the center device is completed. Centralized monitoring device according to the item.