JPH11187385A - Automatic monitoring device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To monitor a plurality of monitoring bases with one automatic monitoring device and to give a priority. The present invention detects a trigger signal from a monitoring station having a higher priority even when image information is transferred and recorded from a certain monitoring station by setting priorities to a plurality of monitoring stations. Then, the monitoring base is automatically switched to the monitoring base, so that the user can arbitrarily select desired image information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention provides a priority for each of a plurality of monitoring bases, so that even when image information is transferred and recorded from a certain monitoring base, a priority is given to the monitoring bases having higher priorities. The present invention relates to an automatic monitoring device that automatically switches to a monitoring site when a trigger signal is detected.

[0002]

2. Description of the Related Art In a conventional automatic monitoring apparatus, a monitoring base is always recorded to record an abnormality such as intrusion of an object, and when an object enters a monitoring base, a sensor detects an abnormality and starts recording. Some record abnormalities. When there are a plurality of monitoring bases, a recording device is required for each of them, and each recording information is reproduced as needed to find the cause of the abnormality. As a result, when there are a plurality of monitoring sites, monitoring devices that function independently of each other are required, and the monitoring devices record only specific monitoring sites.
The recorded information is reproduced from a plurality of monitoring sites as needed.

[0003]

In such a conventional automatic monitoring device, to monitor a plurality of monitoring sites,
An automatic monitoring device that functions independently of each other is required and is recorded only in that device, so that a large number of monitoring devices are required. In addition, there is a problem that much time is required for reproducing recorded information and confirming desired recorded information. Further, there is a problem that a large-capacity recording medium is required because non-compressed data of an audio image is recorded.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and voice and image information input from a microphone and a camera at a monitoring site is compressed by a codec, and the compressed data is compressed. In an automatic monitoring device that records data in the ring buffer of a hard disk and transfers the data from the ring buffer to a hard disk as needed, when multiple monitoring sites are installed, priority is given to each monitoring site arbitrarily. When a trigger signal from a monitoring site with a higher priority is detected while recording and detecting a trigger signal from a monitoring site by setting the order, it is automatically switched to that monitoring site and stored in the corresponding ring buffer. An automatic monitoring device in which the image information is recorded is provided.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram when audio and video information is recorded on a hard disk by the automatic monitoring apparatus of the present invention. In FIG. 1, 101, 104 and 10
7 is a microphone, 102, 105 and 108 are cameras,
103, 106 and 109 are sensors, 110 is an input switching device, 111 is a codec, 112 is a control device, 113 is a communication device, 114, 115 and 11
Reference numeral 6 denotes a ring buffer on the hard disk, 117 denotes a hard disk, and 118 denotes a monitor. The sound of the microphone 101 and the camera 1 based on FIG.
The operation until the image No. 02 is recorded on the hard disk 117 will be described.

Until the control device 112 detects the trigger signals from the sensors 103, 106 and 109, the control device 112 sequentially switches the audio / video information from the monitoring sites 201, 202 and 203 at the timing set by the input switching device 110. Input to the codec 111. Then, the compressed data output from the codec 111 is stored in the ring buffers 114 and 11 corresponding to the respective monitoring bases.
Recording is continued while overwriting until the next monitoring site is switched to 5 and 116. Therefore, the recording in the ring buffer and the management of the address of the ring buffer are performed by the control device 112, and when the recording is performed up to the last address of the ring buffer, the control returns to the top address again and continues recording.
Previously recorded information is destroyed.

When the control device 112 detects a trigger signal from the sensor 103 at the monitoring site 201, it controls the input switching device 110 to switch the input to the codec 111 to the monitoring site 201, and stores the input into the ring buffer 114 for a predetermined time. Be recorded. The information recorded in the ring buffer 114 before the detection of the trigger signal and the information recorded for a predetermined time after the detection of the trigger signal are transferred to and recorded on the hard disk 117 so that they can be reproduced in time series. The ring buffer is set to have such a size that recording for a predetermined time after detection of the trigger signal does not destroy all recordings before detection of the trigger signal.

When a trigger signal from the monitoring base 203 having a higher priority is detected during the recording in the ring buffer 114 after the detection of the trigger signal from the monitoring base 201, the control device controls the immediate input switching device 110 to control the codec 1
The input to 11 is switched to the monitoring site 203, recorded in the ring buffer 116, and the information before and after the detection of the trigger signal is transferred to the hard disk 117 for recording.

Thereafter, the input to the codec is monitored at the monitoring site 2
01, the audio / video information at a predetermined time after the detection of the trigger signal is recorded in the ring buffer 114, and the information before and after the detection of the trigger signal is transferred to the hard disk 117 for recording. Since the audio-visual information before and after the sensor 103 of the monitoring base 201 detects the abnormality is recorded on the hard disk, by reproducing it, the cause of the abnormality can be promptly confirmed. Using the communication device 113, the cause of the abnormality can be promptly confirmed even from a remote place.

[0010]

As described above, according to the present invention, even when image information is transferred and recorded from a certain monitoring base, priority is given to the monitoring bases from a plurality of monitoring bases. When the trigger signal is detected, the monitoring site is automatically switched to the monitoring site, so that the user can arbitrarily select desired image information.

[Brief description of the drawings]

FIG. 1 is a block diagram when recording is performed by the automatic monitoring device of the present invention.

[Explanation of symbols]

 Reference Signs List 101 microphone 102 camera 103 sensor 110 input switching device 111 codec 112 control device 113 communication device 114 ring buffer 117 hard disk 118 monitor 201 monitoring base

Claims (2)

[Claims] An audio and image information input from a microphone and a camera at a monitoring site is compressed by a codec, and the compressed data is recorded in a ring buffer of a hard disk. In an automatic monitoring device that transfers data to a hard disk and records it, when a plurality of monitoring sites are installed, the priority signal can be arbitrarily set for each monitoring site to detect and record a trigger signal from a certain monitoring site. An automatic monitoring device which automatically switches to the monitoring site when a trigger signal is detected from a monitoring site having a higher priority during the operation, and records the image information in a corresponding ring buffer. 2. The compressed data of voice and image from a plurality of monitoring sites recorded on a hard disk can be recorded and reproduced in time series or at each monitoring site.
Automatic monitoring device as described.