JPS61182391A - Fault supervisory device - Google Patents

Abstract

PURPOSE:To attain automatic supervision and recording of fault occurrence by simplifying a video signal from a television camera and transmitting and receiving a facsimile signal. CONSTITUTION:A video image at normal state is coded into a digital signal in advance and simplified and stored. If abnormity such as burglar or a fire takes place afterward, since the video image is changed, the change is detected to activate a signal converter 6 and transmitted to a transmission line 7 as a facsimile signal. A conventional facsimile signal is enough for the receiver 8 and the receiver 8 records the abnormity of an installed part. In using the facsimile receiver, automatic reception is attained and it is not required for supervision at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an abnormality monitoring device using a television camera.

[Conventional technology]

Conventionally, in this type of device, it has been common to transmit signals captured by a television camera as they are and display them on a monitor television for monitoring.

[Problem that the invention seeks to solve].

However, the above-mentioned conventional devices require constant human monitoring, and it is difficult to check and record images when an abnormality occurs, and extra equipment is required, which is expensive. There was a problem.

The present invention has been made in order to eliminate the above-mentioned conventional problems.1) To obtain an abnormality monitoring device that can automatically monitor and record the occurrence of abnormalities and that can simplify the device. The purpose is to

[Means for solving problems]

In the present invention, the signal from the television camera is simplified and temporarily stored, compared with the subsequent video signal, and if there is a change, the video signal is converted to a facsimile signal and sent out, and this facsimile signal is transmitted to the receiving device. I received it now.

[Effect]

In the present invention, since the video signal is simplified and the transmission and reception is performed using facsimile signals, it is possible to automatically monitor and record the occurrence of abnormalities, and furthermore, the signal transmission can be performed easily and at high speed. can.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a television camera, 9 is an A/D converter 2,
Signal processing section 3. Storage device 4. A signal processing device includes a change detecting section 52 and a signal converting device 6, 7 is a transmission path, and 8 is a receiving device.

In the above configuration, a video signal obtained by the television camera 1 is converted into a digital signal by the A/D converter 2 and input to the signal processing section 3. The signal processing unit 3 simplifies this digital signal, decomposes it into pixels, and temporarily stores it in the storage device 4 . Further, the signal processing section 3 similarly processes the video signal inputted from the television camera 1 after the signal processing, and sends it to the change detection section 5. The change detection section 5 compares the currently sent signal with the signal stored in the storage device 4, detects the change, and sends out an activation signal. The signal conversion device 6 converts the currently obtained signal from the signal processing section 3 into a facsimile signal in response to the activation signal from the change detection section 5, and sends it to the transmission line 7. The receiving device 8 is constituted by a commonly used facsimile receiver, and receives facsimile signals from the transmission line 7.

The above device constitutes an automatic monitoring system using the television camera 1, and is used to quickly detect an abnormality such as an intrusion or a fire at the installation location and obtain video information of the location. That is, the normal video is converted into a digital signal, simplified, and stored in advance. If there is an abnormality such as an intrusion or a fire, the image changes, so the change is detected, the signal converter 6 is activated, and the facsimile signal is sent to the transmission line 7. The receiving device 8 may be a normal facsimile receiver, and records any abnormality at the location where the receiving device 8 is installed. Using a facsimile receiver enables automatic reception, eliminating the need for constant monitoring.

〔Effect of the invention〕

As described above, the present invention simplifies the video signal from the television camera and sends and receives it as a facsimile signal, and it is possible to automatically monitor and record the occurrence of abnormalities, and also to transmit the signal. can be done easily and quickly. Furthermore, since a television camera is used as a sensor, no special sensor is required, and an existing facsimile machine can be used, resulting in an economically efficient device.

[Brief explanation of the drawing]

The drawing is a configuration diagram of an abnormality monitoring device according to the present invention. 1. Television camera, 2. A/D converter, 3.
...Signal processing section, 4.Storage device, 5.Change detection section, 6.Signal conversion device, 7.Transmission line, 8..
- Receiving device, 9... signal processing device. '9: I own name is tm

Claims (1)

[Claims] (1) A television camera, a device that digitizes and simplifies the video signal from the television camera, a storage device that stores the digitized and simplified video signal, and a digitized and simplified video signal and storage device. a change detection device that detects a change in the signal by comparing the signal stored in the change detection device; a signal conversion device that converts a video signal from a television camera into a facsimile signal when the change detection device detects a change; An abnormality monitoring device comprising: a device that sends out this facsimile signal; and a receiving device that receives the sent out facsimile signal.