JPH0399398A - Remote monitoring device - Google Patents

Abstract

PURPOSE:To automatically detect abnormality by transferring an image of movement in the visual field of a monitoring camera to a monitoring center at the time of detecting the movement and displaying an alarm at the time of detecting the movement. CONSTITUTION:A video signal from the camera 1 is converted into a digital signal by an A/D conversion part 7 and stored in a frame memory part 8 as the data of one picture. The space of two pictures is prepared in the memory part 8 and the succeeding picture data are stored on the other memory part 8. A collating circuit part 9 compares the data of both areas of the memory part 8. When the noncoincidence of collation is generated, an alarm signal is informed to a control part 12. The control part 12 drives a coding part 10, compresses the data volume of the picture data of the memory part 8 and stores the contents in a storage part 11. The control part 12 drives an INS interface part 13 and connects the part 13 to a receiver through a digital exchange network 3. Thus, an economical system can be constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote monitoring system using a digital switching network.

[Conventional technology]

The conventional device is equipped with a detection means for detecting an abnormal state, as described in Japanese Patent Application Laid-Open No. 62-256194,
When an abnormality is detected, it is configured to notify the receiver via the telephone line.◇ The above conventional technology requires a dedicated detection means to detect the abnormal state, and also Since the abnormality is only reported and no video display is performed, there is a problem that it is not easy to know what kind of situation the F/C is in.The purpose of the present invention is to provide a remote control system that can solve the above problems. This is achieved by automatically detecting abnormalities by using a surveillance camera that sends images to a monitoring center in the event of an abnormality, without providing a dedicated detection means for detecting abnormal conditions.

[Effect]

The surveillance camera constantly monitors the condition, automatically detects movement within the camera's field of view, determines this to be an abnormal condition, activates the automatic call function, and transmits the image data via the digital exchange network. is transferred to the monitoring center and displayed as a video.At the same time, an alarm indicator also sounds at the monitoring center. [Example] Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a system to which the remote monitoring device of the present invention is applied. In FIG. 1, a transmitter (SEND) 2 and a receiver (RIC) 4 are connected to a digital switching network (INS) 5. - generally 5il per REC
The ND is composed of n units.

A surveillance camera (CAM) 1 is connected to each of the 5END2, and an operation unit (OPII) 6 and an alarm indicator (ALM) that control the system are connected to the RIiC4.
)5 are connected.

In this system, when the target to be monitored is the cash machine corner of a bank, etc., normally 811! Connect to iD2, C
The video taken with the AME t is displayed on the OPM6 display, but when there is no movement of the monitored object at night or on holidays, there are many unnecessary connections, which is uneconomical. Therefore, during nights and holidays like this, only when an abnormality occurs in the monitored object5.
It is necessary to connect from 11ND2 to R111C4 via IN53 and report abnormalities. Conventionally, a dedicated detection means (for example, a door open sensor, etc.) was used to detect abnormalities in the monitored object. However, the present invention attempts to detect abnormalities using image data from a surveillance camera.

FIG. 2 is a configuration diagram of the transmitter (SIND) 2 which is the main part of the present invention. The video signal from the camera (CAM!RI 1) is converted to a digital signal by the analog/digital converter (A/D) 7, and is converted to a digital signal by the frame memory unit (FRM) 8. The data for one screen is stored in FRM8.Here, FRM8 is prepared for two screens, and the next screen data is stored in the other FRM in the same way as above.
Stored in RM8 - In this state, the previous screen and current screen are stored in two FRM8s, so the matching circuit section (GOM
P) In step 9, compare the data of both FRM2. If they all match, it is assumed that there is no movement in the monitored object, and the next screen data is stored in the first FRM 21C and compared in the same manner. As a result, if a match mismatch occurs, an alarm signal is sent to the control unit (c'rL) 12. This is it, 9C
'I'L12 operates the encoding unit (COD) 10,
'The amount of screen data of RM8 is compressed and the storage section (MF
iM).

C'l'L12 is lN85 interface engineering department (knee IN
F) 15 is operated and connected to the receiver (RIC) 4 via the digital switching network (INS) 5.

Here, the data such as the telephone number for connecting to the iC4 is input in advance from the operation unit (OPM) 6 of the monitoring center.
Set it to MIM 11 of 5IND2 via
The configuration is such that an alarm signal is issued as a mismatch when a difference of more than a certain value occurs, taking into account differences due to quantization noise in the parts.

〔Effect of the invention〕

According to the present invention, since the presence/absence of an abnormality can be automatically determined from the video signal of a surveillance camera, there is no need to install an abnormality detection sensor or cable construction, and an economical system can be configured. .

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a transmitter, which is a main part of the present invention. 1... Surveillance camera, 2... Transmitter, 3... Digital exchange network, 4... Receiver, 5... Alarm indicator, 6
...Operation unit, 7...Analog/digital conversion unit,
8... Frame mesori part? ... Verification circuit section, 10
... Encoding section 11... Storage section, 12... Control section,
13...INSSNS Intafnee.

Claims (1)

[Claims] 1. In a remote monitoring system that monitors remote areas using a digital switching network, when movement is detected within the field of view of the surveillance camera, an automatic transmission function is activated and the image is transmitted to the surveillance center. , a remote monitoring device characterized by displaying an alarm at a center and displaying a video.