JPH04127298A - Remote supervisory device - Google Patents

Abstract

PURPOSE:To prevent reception data from being erased even when accident warning are issued intensively by providing a means which stops reception when difference in a write direction between a written address and a read out address is less than a prescribed number of addresses decided in advance. CONSTITUTION:A communication control unit 6 moniters the difference in the write direction between a reception buffer write address and a reception buffer read-in address, and stops the function of communication reception equipment 1 when it is decreased to a value less than the prescribed number of addresses decided in advance. During that time, a control part 21 reads out the reception data stored in a reception buffer sequentially, and updates the reception buffer read-in address, and reads out a building name or a facility name stored in a memory device 3, and also, stores abnormality information, and sends data to a reception data display device 4 and a reception data printer 5. Thereby, it is possible to prevent the reception data from building terminal equipment received by a central supervisory device from being erased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote monitoring device that monitors the status of various equipment installed in each of a number of buildings with a central monitoring device located 1 meter away.

[Conventional technology]

A conventional remote monitoring device is, for example, disclosed in Japanese Patent Application Laid-Open No. 59-24226.
As disclosed in Publication No. 0, a building terminal device is installed in a building where equipment such as air conditioning equipment and elevators are installed, and these multiple building terminal devices and a central monitoring device installed at a service company etc. They are connected to each other by telephone lines.

Building terminal equipment electrically monitors the status of building equipment and sensors, and if an abnormality occurs in the equipment being monitored or a sensor operates, it will be sent to the central monitoring station via telephone line. A code representing a specific building and abnormal condition data are sent to the device as an alarm signal. The central monitoring device that receives this abnormality information stores it in the reception buffer, and then reads out the salt and equipment name stored in the storage device based on the received abnormality information, and also stores the abnormality information. . Next, the name of the device where the abnormal condition occurred, the name of the abnormal condition, the name of the building, etc. are output to the display device and the printing device. Then, while looking at the abnormality information displayed on the display device, the monitoring personnel of the central monitoring device communicate with the necessary departments to take appropriate countermeasures, and if necessary, service personnel can repair the problem. In order to do so, they go to the building where the abnormal situation occurred and perform repair work on the equipment.

In addition, the building terminal equipment monitors the power supply voltage to the building terminal equipment, and if a power outage is detected, the battery backup power is used to notify the central monitoring equipment that the equipment cannot be monitored due to a power outage. It is designed to issue a power outage signal to notify you. Even when the power outage is restored, a power outage recovery signal is sent to the central monitoring device. At the central monitoring device, a supervisor who sees a power outage signal displays and contacts the department that can quickly restore the power outage.

[Problems to be Solved by the Invention] In the above conventional technology, for example, when a wide area power outage occurs and power outage signals are sent to the central monitoring device from all the building terminal devices in the area, the processing capacity of the central monitoring device is reduced. When more alarms are received, the reception buffer becomes full, and the newly received data ends up overwriting the previously received data, causing data received from building terminal equipment in areas other than the power outage area to be overwritten. The problem was that it disappeared.

The purpose of the present invention is to solve the problems in the above-mentioned prior art,
To provide a remote monitoring device capable of preventing received data from being erased even if alarms are concentrated.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a large number of terminal devices, a receiving section and a storage section that receive signals from these terminal devices, and a storage section that stores the signals received by the receiving section in the storage section. a writing means for writing and storing the signals stored in the storage section in the order of the addresses; a reading means for reading out the signals stored in the storage section in the order of the addresses; and an output means for outputting the signals read by the reading means to a predetermined peripheral device. In a remote monitoring device, the determination is made to determine whether the difference in the writing direction between the address being written by the writing means and the address being read by the reading means is less than or equal to a predetermined number of addresses. and reception stopping means for stopping reception by the receiving unit when the difference is less than or equal to the number of addresses.

[For production]

For example, if a wide-area power outage occurs in an area monitored by a central monitoring device, and all building terminal equipment in the area intensively sends power outage signals to the central monitoring device, the processing capacity of the central monitoring device will be affected. If the number of alarms exceeds 100, the reception buffer (storage unit) that stores the received data may overflow, and the already stored received data may be lost. For this reason, in the configuration of the present invention, the remaining writable storage area of the reception buffer is monitored, and when this area decreases below a predetermined number of addresses, reception on the telephone line is stopped, and previously received and stored areas are stored in the reception buffer. To prevent newly received data from overwriting existing received data. By restarting reception on the telephone line after the central monitoring device has caught up and processed the received data in the reception buffer, the central monitoring device can handle the received data from the building terminal equipment without disappearing.

〔Example〕

Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 is a block diagram of a remote monitoring device according to an embodiment of the present invention. When the line receiving device 1 of the central monitoring bag WK receives analog signals from the building terminal devices T1 to Tn via the telephone line, it replaces them with digital signals and writes them into the receiving buffer 22 of the received data processing device 2. The control unit 21 of the received data processing device 2 reads out the building name and equipment name stored in the storage unit W3 based on the abnormality information written in the reception buffer 22, stores the abnormality information, and displays the received data. The device 4 sends the data to the received data printing device 5. The line control device 6 monitors the remaining writable area of the reception buffer 22, and when this area decreases below the predetermined number of addresses, the line control device 6 stops the function of the line reception device 10 and stops the signal from the building terminal devices T1 to Tn. Disable reception.

Next, the operation of this embodiment will be explained. For example, if a wide-area power outage occurs in an area monitored by the central monitoring device, all building terminal bags WT1 to Tn in that area will automatically send a power outage signal to the central monitoring device K over the telephone line. I'll come. The line receiving device 1 replaces the received signals from the building terminal devices TI-Tn, which arrive one after another via the telephone line, with digital signals, writes them into the receiving buffer 22 of the receiving digital processing device 2, and updates the receiving buffer write address. . The control unit 21 reads the received data in the receive buffer 22 at the position of the receive buffer read address, and then updates the receive buffer read address.

However, in the case of a wide-area power outage, the control unit 21 will receive a notification that exceeds its processing capacity by 8, so received data will accumulate in the reception buffer 22 one after another, and the reception buffer write address will also be updated one after another. 0 line control device 6
monitors the difference in the writing direction between the receive buffer write address and the receive buffer read address, and when this difference decreases to a predetermined number of addresses or less, the function of the line receiving device 1 is stopped and the telephone line ■ Even if an incoming signal of No. 7 is detected, the incoming call does not arrive, and signals from the building terminal devices T1 to Tn are not received. During this time, the control unit 21 sequentially reads out the received data accumulated in the receive buffer, updates the receive buffer read address, reads out the building name and equipment name stored in the storage device 3 based on the received data, and also reads the abnormality information. is stored, and the data is sent to the received data display device 4 and received data printing device 5. The line control bag W6, which monitors the difference in the writing direction between the receive buffer write atrus and the receive buffer read address, detects this when the difference expands beyond a predetermined number of addresses and controls the line receiving device 1. function and resume receiving calls on the telephone line. Thereby, the received data from the building terminal devices T1 to Tn received by the central monitoring device is not erased in the receiving buffer 22, and the received data can be reliably handled. Furthermore, the building terminal device T
1 to Tn, if the telephone line is busy and the central monitoring device K cannot be notified, the call is repeated to the telephone line again after an appropriate period of time, so the building terminal devices T1 to Tn Alerts can always be received by the central monitoring device.

According to this embodiment, the received data from the building terminal devices T1 to Tn received by the central monitoring device K will not be lost, and therefore, the received data can be reliably dealt with, so failure notifications of important equipment will be missed. This has the effect of allowing appropriate countermeasures to be taken without causing any problems.

〔Effect of the invention〕

As described above, in the present invention, reception on the telephone line is stopped when the reception buffer for temporarily storing data becomes full due to the concentration of alarms from the building terminal equipment, so that the building terminal The data received from the device will not disappear, and even if an abnormality occurs in the building's equipment or a sensor is activated, the data can be reliably received by the central monitoring device, allowing appropriate countermeasures to be taken.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a remote monitoring device according to an embodiment of the present invention. K......Central monitoring device, T......
...Building terminal equipment, L...Telephone line, L
・・・・・・・・・Line receiving device, 2・・・・・・・・・
- Received data processing device, 3... Storage device, 4... Received data display device, 5...
...Received data printing device, 6...
・Line control device.

Claims (1)

[Claims] A large number of terminal devices, a receiving section for receiving signals from these terminal devices, a storage section, and a writing means for writing and storing the signals received by the receiving section in the storage section in the order of the addresses of the storage section. , a remote monitoring device comprising: reading means for reading out the signals stored in the storage unit in the order of the addresses; and output means for outputting the signals read by the reading means to a predetermined peripheral device. determining means for determining whether a difference in the writing direction between the address written by the means and the address read by the reading means is less than or equal to a predetermined number of addresses; 1. A remote monitoring device comprising: reception stopping means for stopping reception of the receiving section when the receiving unit stops receiving data.