JPH03259400A - Abnormality informing device - Google Patents

Abstract

PURPOSE:To surely prevent the releasing operation of an information prohibiting switch forgotten by returning a mode to a monitoring mode when the information prohibiting switch of an abnormality signal is left as it is exceeding prescribed time. CONSTITUTION:When a prohibition mode is set by the information prohibiting switch 25, a constant time monitoring processing circuit 24b sends out a prohibition mode neglection signal to an information processing circuit 24c and a monitoring mode control circuit 24d after clocking the prescribed time. The circuit 24c receiving the signal informs the fact to a central monitoring device 4 via a communication port 23 and a communication line 3. Simultaneously, the circuit 24d cancels the prohibition mode, and sets the monitoring mode by closing a normally-closed contact 25b and opening a normally-open contact 25a, by which an ordinary monitoring state can be set. In such a way, it is possible to automatically return the mode to the monitoring mode even when the release of the switch 25 is forgotten, and to eliminate the impossibility of information of the abnormality.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an abnormality reporting device, and more particularly to an abnormality reporting device that detects an abnormality in a building and reports it to a central monitoring device.

[Prior Art] Generally, an abnormality reporting device that detects an abnormality in equipment in a building and reports it to a central monitoring device operates differently depending on whether it is in a normal monitoring state or during maintenance monitoring.

In other words, during maintenance work, maintenance personnel intentionally generate an abnormal signal, and in order to check the operating status of the abnormal notification device in response to this abnormal signal, they turn on the notification prohibition switch installed on the terminal device and perform central monitoring. The reporting function to the device has been stopped.

When maintenance work is completed, maintenance personnel are required to release the report prohibition switch and return to normal monitoring status. However, because people sometimes forget to do this, an abnormality may occur in the equipment in the building when it should be under normal monitoring conditions, and the abnormality may not be reported to the central monitoring system. may not function properly.

Therefore, in Japanese Patent Publication No. 63-26065, when an abnormality occurs in the equipment to be monitored while the terminal device is in the maintenance work mode, an alarm is generated, and the maintenance personnel who hear the alarm sound can activate the report prohibition switch. An abnormality reporting device has been proposed in which the abnormality notification device is released and causes the terminal device to report the abnormality.

The problem with the proposed abnormality reporting device is that if maintenance personnel intentionally generate an abnormality signal during maintenance work and perform inspection work, an alarm will be generated each time, making the maintenance personnel feel uncomfortable. be.

It is also known from experience that even if an alarm sounds during this work, maintenance personnel who are concentrating on the work often do not notice the alarm and do not release the report prohibition switch. ing.

[Problems to be Solved by the Invention] Therefore, the present application, filed as Japanese Patent Application No. 1-234432, discloses a detecting means for detecting an abnormality in equipment in a building, and a corresponding abnormality signal when the detecting means detects the abnormality. A terminal device that reports to the central monitoring device via a communication line, and a notification prohibition device that is set from monitoring mode to prohibition mode during maintenance work that intentionally generates this abnormal signal and prohibits reporting of abnormal signals to the central monitoring device. In an abnormality reporting device having a switch, if the above-mentioned notification prohibition switch is left in the prohibition mode for a preset period of time, the central monitoring device is notified of this neglect state. An abnormality reporting device with status reporting means was proposed.

However, manual operation by maintenance personnel is always required to switch back from prohibition mode to monitoring mode, so although notification of neglect is guaranteed, maintenance personnel must be dispatched from the central monitoring system to operate the notification prohibition switch. For example, if a report is made from a terminal device in the middle of the night, maintenance personnel at the central monitoring device will have to be dispatched unnecessarily.

An object of the present invention is to provide an abnormality notification device that can reliably prevent forgetting to release the notification prohibition switch.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a system in which a notification prohibition switch that prohibits notification of an abnormal signal to a central monitoring device is placed in a prohibition mode for a predetermined time period set in advance. The present invention is characterized in that a monitoring mode return means is provided for returning the report-prohibited pickpocket to the monitoring mode when the set idle state is reached.

[Operation] Since the abnormality notification device according to the present invention is configured as described above,
During maintenance work, maintenance personnel turn on the notification prohibition switch and set it in prohibition mode to prevent the intentionally generated abnormal signal from being reported to the central monitoring device, but they forget to release the notification prohibition switch after completing this inspection. If the user continues to leave the device in the prohibited mode without switching to the monitoring mode, the preset 1/4 will ensure that the user forgets to release the notification prohibition switch and continues to leave the device unattended. There is no need to dispatch maintenance personnel from the side.

[Example code] Embodiments of the present invention will be described below with reference to the drawings.

First, the configuration of the embodiment is shown in the block diagram of FIG.

Equipment 1 in a building is connected to a terminal device 2, and this terminal device 2 is connected to a central monitoring device N4 via a communication line 3.

Various types of equipment 1 are installed in a building, each of which has a detection means la consisting of a contact point or the like for detecting an abnormality. These facilities 1 are connected to a terminal device 2 in the same building to perform abnormality processing. Then, when an abnormality should be reported, the abnormality is reported to the central monitoring device M4 via the communication line 3.

Terminal installation! Inside equipment 2, equipment 1 is connected via communication port 21.
and the communication line 3 via the communication port 23, and further connected to the report prohibition switch 25 via the communication port 22.

Each circuit shown below is provided within the dotted line in the figure. First, the abnormal signal determination processing circuit 24a connected to the communication port 21 is a circuit that determines whether or not an abnormality has occurred in the equipment fl 11 based on information from the detection means 1a of the equipment 1 taken in from the communication port 21. be. The notification processing circuit 24c connected to the abnormal signal determination processing circuit 24a via the normally closed contact 25b is a circuit that reports the generated abnormal signal to the central monitoring device 4 via the communication port 23 and the communication line 3. Further, the monitoring mode control processing circuit 24d connected to the communication port 22 monitors the 1-report prohibition switch 25 to determine whether the mode is a monitoring mode indicating a normal monitoring state or a prohibition mode indicating a state in which reports are prohibited during maintenance work. This is a circuit to be set, and is electrically connected to the contacts 25a and 25b. The fixed time monitoring processing circuit 24b, which has the normally open contact 25a connected to the input side and the notification processing circuit 24c and the monitoring mode control processing circuit 24d connected to the output side, has a state of the prohibition mode set by the monitoring mode control circuit 24d in advance. This circuit performs a process of determining whether or not a set predetermined time has elapsed. Next, the operation of this fixed time period monitoring process will be explained.

In the normal monitoring state, the notification prohibition switch 25 is switched to the monitoring side terminal 25c and is released. Due to this state, the monitoring mode control processing circuit 24d is set to the monitoring mode, the normally closed contact 25b is closed, and the normally open contact 25 is set to the monitoring mode.
A is open circuit.

The abnormal signal determination circuit 24a constantly receives and monitors abnormal signals from the equipment 1 via the communication port 21. If an abnormality occurs in the installation f11 and the detection means 1a detects it, the abnormality signal determination circuit 24a determines the abnormality of the installation f11 based on the abnormality information, and generates an abnormal signal depending on the type of abnormality. Emitted. This abnormality signal is input to the notification processing circuit 24c via the normally closed contact 25b, and from there, an abnormality notification is sent to the central monitoring device w4 via the communication line 3.

By the way, when maintenance work is performed by maintenance personnel, the inspection work is performed by intentionally generating an abnormal signal, but in order to prevent this from being erroneously reported to the central monitoring device 4, the notification prohibition switch 25 is set to the prohibition side. Switch to terminal 25d. Thereby, the monitoring mode control circuit 24d switches from the monitoring mode to the prohibition mode and sets it. The normally closed contact 25b becomes open, and the abnormal signal is no longer input to the notification processing circuit 24c, and the central monitoring system! ! Abnormality reporting to 4 is prohibited. In this prohibition mode, the normally open contact 25a is closed, so the fixed time period monitoring processing circuit 24b starts measuring time.

This will now be explained using the time chart shown in FIG.

When the prohibition mode f1 is set at time t1, maintenance personnel can intentionally generate an abnormality signal and perform inspection work on the terminal device 2 without reporting the abnormality to the central monitoring device 4. Time measurement has started in the fixed time limit monitoring processing circuit 24b.

Then, at time t2 when various inspections are completed, the maintenance person switches the notification prohibition switch 25 to the monitoring side terminal 25c, that is, releases it. The monitoring mode control circuit 24d detects that the notification prohibition switch 25 is switched to the monitoring side terminal 25c, cancels the prohibition mode, and switches to the monitoring mode. As a result, the normally closed contact 25b is closed, the normally open contact 25a is opened, and the fixed time monitoring processing circuit 24
b cancels timekeeping. In this way, normal monitoring status is resumed.

However, a case will be described in which the user forgets to release the notification prohibition switch 25 even after the inspection work is completed, that is, the case is not switched to the monitoring side terminal 25c.

After the prohibition mode f1 is set at time t3, the prohibition mode f1 continues as it is unless the notification prohibition switch 25 is released at time t4 even though the inspection work is completed. In this case, the fixed time limit monitoring processing circuit 24b, which started counting at time t3, measures a predetermined time T, and at that point enters the neglect detection state f2, and sends a prohibition mode neglect signal to the notification processing circuit 24c and the monitoring mode control circuit 24d. be done.

Notification processing circuit 24c that received this prohibition mode neglect signal
Then, via the communication port 23 and the communication line 3, a notification is sent to the central monitoring device 4 that the notification prohibition switch 25 remains in the idle state and has not been released. Similarly, the monitoring mode control circuit 24d, which has received the prohibition mode leaving signal, cancels the prohibition mode, closes the normally closed contact 25b, and closes the normally open contact 25b.
A is opened to set the monitoring mode, and the normal monitoring state is resumed.

In this way, even if the maintenance worker forgets to release the notification prohibition switch 25 after the maintenance work is completed and continues to leave the system unattended, this will be reported to the central monitoring bag M4 when the predetermined time T has elapsed. , it is possible to reliably detect the state of neglect and to leave a record of it. In addition, since the monitoring mode is automatically set at the same time as the notification, maintenance personnel dispatched from the central monitoring device 4 are no longer required. Note that although the report prohibition switch 25 is turned on to the prohibition side terminal 25d,
It is sufficient to input it to the monitoring side terminal 25c during the next maintenance work.

[Effects of the Invention] As explained above, the present invention can provide a more reliable abnormality reporting device that eliminates the failure of regular notifications when maintenance work is completed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a system of an abnormality reporting device according to the present invention, and FIG. 2 is a time chart of its operation status. l...Equipment, 1a...Detection means, 2.
...Terminal bag. Because the system automatically returns to the monitoring mode, the user may forget to release the report prohibition switch, which may cause problems.
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Claims (1)

[Claims] 1. A detection means for detecting an abnormality in equipment in a building; a terminal device for reporting a corresponding abnormality signal to a central monitoring device via a communication line when the detection means detects an abnormality; In the abnormality reporting device, the abnormality reporting device includes a notification prohibition switch that is set from a monitoring mode to a prohibition mode during maintenance work to prohibit the notification of the abnormality signal to the central monitoring device, wherein the notification prohibition switch is set to a predetermined value that is set in advance. An abnormality reporting device characterized in that it is provided with monitoring mode return means for returning the reporting prohibition switch to the monitoring mode when the prohibition mode is set to the idle state for a period of time.