JP2001333416A - Network supervisory camera system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a network supervisory camera system that is provided with a supervisory camera, a fault sensor and a camera terminal which conducts automatic alarm processing of transmission data wherein error is detected, and that is communication-connected to a center supervisory unit by a digital communication channel. SOLUTION: The network supervisory camera system consists of a camera terminal 4 provided with a supervisory camera 1, a sensor means 2, an analog/ digital converter 10, a compression means 12, a transmission data selection section 13, a cyclic recording means 14, an alarm means 15, an alarm control means 16 making an alarm control command, and a communication control section 20, and of a digital communication channel, and of a center supervisory unit 6 provided with a center communication control section 30, a supervisory data separation section 31, a recording and reproducing means 34, an alarm data recognition means 35, and a center control command means 36 having a center control command section 36a that transmits a center command to the camera terminal 4 via the digital communication channel 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance camera system, and more particularly, to a surveillance camera, an abnormality detection sensor, and a camera control device for controlling recording and transmission of a camera signal in a wide area, and a packet communication line. The present invention relates to a network surveillance camera system that communicates with a center monitoring device.

[0002]

2. Description of the Related Art Surveillance cameras installed in a wide area, such as large-scale building monitoring, factory premises monitoring, dam and power transmission facility monitoring, and tunnel and irrigation weir monitoring, use a dedicated communication line to provide central monitoring equipment. Is connected for communication. Remote control such as zooming, panning and tilting of individual camera devices is performed by a camera control line or a camera control channel. The occurrence of an abnormal situation at the monitoring site is detected by a predetermined sensor and an alarm signal is notified to the center. The monitoring center recognizes an abnormal situation based on the image of the monitoring monitor or the notified alarm signal, and issues a control command to the corresponding camera device from the center monitoring device. However, since dozens or more camera images are monitored regardless of day or night, problems such as abnormal oversight and delay in recognition tend to occur. In addition, setting up a dedicated communication line requires a large amount of construction cost. There is a need for a surveillance camera system in which processing functions on the camera side when an abnormality occurs are distributed to camera devices for automatic processing, and are connected to a center monitoring device using an existing digital public line.

[0003]

SUMMARY OF THE INVENTION In view of the above-described problems and problems, the present invention provides a monitoring camera, an abnormality detection sensor, and a camera terminal device for performing automatic alarm processing of transmission data of abnormality detection. The purpose of the present invention is to propose a network surveillance camera system that is connected to a center monitoring device via a digital communication line.

[0004]

[Means for Solving the Problems] Monitoring cameras installed at a plurality of monitoring sites such as monitoring of intruders, monitoring of factories and power generation facilities, monitoring of dams and tunnels, and movements for detecting abnormal situations at the monitoring sites. Sensor means such as a detection sensor or an infrared sensor; an A / D for converting an input video signal from a camera into image data; a compression means for compressing or thinning out image data to generate compressed data; A transmission data selection unit that selects compressed data and selects and outputs transmission data; a cyclic recording unit that selects compressed data or non-compressed data and cyclically records the data; Alarm means for judging a situation to generate and output an alarm; and a compression ratio of compressed data, transmission data selection, and cyclic recording means based on the alarm. A camera terminal device having an alarm control means for performing alarm control command, and a communication control unit that communicates outputs such transmission data and the sensor detection data,
A dedicated or public digital communication line for communication connection of a plurality of camera terminal devices, a center communication control unit for communication connection with the digital communication line, a monitoring data separation unit for separating monitoring data from received data of the center communication control unit,
Recording / reproducing means for temporarily storing monitoring data and converting and outputting continuous monitoring data; an image signal generating unit for generating an image signal from the continuous monitoring data; an alarm data separating unit for separating alarm data from the received data; An alarm data recognizing means having a type judging unit for judging an alarm type based on data; an alarm command table storing an alarm processing command for each alarm type; and an alarm processing command when an alarm is output from the alarm data recognizing means. A center control command unit having a center control command unit for transmitting a center command to the camera terminal device via a digital communication line.

[0005] The sensor means is additionally provided with a smoke sensor for detecting smoke emission of a fire, a collapse sensor for detecting collapse or collapse of a building or debris, or a lightning strike to a power generation facility or a transmission facility. Additional installation of a lightning strike sensor to detect, installation of an inundation sensor to detect flooding due to flood damage and flooding due to overflow of the storage tank, additional installation of a fire alarm reception terminal to receive alarm data from the fire alarm Or additionally provide a gas detector terminal for receiving detection data from the gas detector.

The camera terminal device is connected between an A / D for converting an input video signal from a camera into image data, an image data compression unit for compressing image data such as an MPEG format or a JPEG format, or a data for thinning out image data. Draw section, transmission data selection section for selecting and outputting transmission data by selecting compressed data or non-compression data, recording selection section for selecting and inputting recording data by selecting compressed data or non-compression data, and circulating through recording data Circulating means having a recording memory for temporarily storing and a recording control unit for controlling storage and reproduction of the recording memory, a terminal ID memory for storing the ID of the camera terminal device, and sensor detection from the alarm detecting means. An abnormality determination unit that performs a simple abnormality determination based on data and a determination condition memory that stores the determination conditions for the abnormality determination; An alarm control table that stores an alarm control command corresponding to the type of alarm and an alarm control unit that issues an alarm control command to each unit in the device based on the alarm command when an abnormality is determined. It comprises an alarm control means, and a communication control section for superimposing transmission data and alarm data from the alarm control means and sending the data to a digital communication line.

The camera terminal has an audio input terminal and an A / D for converting an audio signal into digital audio data.
Or a center command separation unit for separating and outputting the center command received from the center monitoring device via the digital communication line.

The recording memory of the cyclic recording means is a detachable semiconductor disk or IC card, or an HDD by magnetic recording / reproducing means.

In the judgment condition memory of the alarm means,
When sensor detection data is repeatedly input a predetermined number of times, an additional determination condition for making an abnormality determination is additionally stored. When the sensor detection data indicates an intermediate value with an abnormal value, an intermediate determination for making an intermediate abnormality determination is made. A condition is additionally stored, or a plurality of determination conditions for performing an abnormality determination based on a plurality of sensor detection data are additionally stored.

In the control table of the alarm control means, a circulation recording stop command mode for stopping the new recording in the circulation recording means is additionally stored, and a circulation reproduction command mode for circulating and reproducing the recording data cyclically recorded in the circulation recording means is provided. Additional storage of a cyclic reproduction superimposition command mode for circulating and reproducing the recording data circulated and recorded in the circulating recording means and superimposing the circulated reproduction data on real image data for transmission, and adding an alarm data transmission command mode A priority transmission request mode for requesting a permission application for transmitting the transmission data from the camera terminal device with priority to the center monitoring device is additionally stored, or a command to change the compression ratio or the thinning ratio to the compression means. Is additionally stored.

[0011] The digital communication line is a LAN by wired or wireless means, a communication line conforming to the IEEE 1394 standard, a packet communication line by wireless means such as a mobile telephone network, or a communication satellite is used. It is a packet communication line.

[0012] A priority transmission command mode for giving priority to transmission to a specific camera terminal device is additionally stored in the alarm processing table of the center monitoring device, and transmission of monitoring data cyclically reproduced to a specific camera terminal device is commanded. The cyclic playback command mode is additionally stored, or the cyclic recording command mode for instructing a specific camera terminal device to restart the cyclic recording is additionally stored.

[0013] A terminal setting operation unit for setting a predetermined terminal ID in a terminal ID memory of a specific camera terminal device is additionally installed in the center monitoring device via a digital communication line. A terminal setting operation unit for selecting and setting a predetermined sensor is additionally installed in an alarm control unit of a specific camera terminal device. The predetermined determination condition is stored in a determination condition memory of the specific camera terminal device via a digital communication line. A terminal setting operation section for setting is additionally installed, or a terminal setting for recording / setting monitoring data of a predetermined compression rate or thinning rate in the cyclic recording means of a specific camera terminal device via a digital communication line. Install additional operation units.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration and operation of a network surveillance camera system according to an embodiment of the present invention will be described with reference to FIG. The network surveillance camera system of the embodiment detects surveillance cameras 1 installed at a plurality of surveillance sites, such as surveillance of intruders, surveillance of factories and power generation facilities, and monitoring of dams and tunnels, and detects abnormal situations at the surveillance sites. A / D1 for converting a sensor means 2 such as a motion detection sensor or an infrared sensor, and an input video signal from the camera 1 into image data
0, a compression unit 12 for compressing or thinning out image data to generate compressed data, a transmission data selection unit 13 for selecting various types of compressed data or uncompressed data and selectively outputting transmission data, a compressed data or non- Cyclic recording means 14 for selecting the compressed data and cyclically recording the data; and alarm means 15 for selecting the sensor detection data from the sensor means and generating and outputting an alarm upon judging an abnormal situation.
And an alarm control means 16 for issuing an alarm control command to a compression ratio of compressed data, transmission data selection, and a cyclic recording means based on an alarm, and a communication control unit 20 for communicating and outputting transmission data and sensor detection data. Camera terminal device 4 having a plurality of camera terminal devices 4,
4 ', a dedicated or public digital communication line 5 for communication connection, a center communication control unit 30 for communication connection with the digital communication line 5, and a monitoring data separation unit 31 for separating monitoring data from data received by the center communication control unit 30. ,
A recording / reproducing unit 34 for temporarily storing monitoring data and converting and outputting continuous monitoring data, an image signal generating unit 32 for generating an image signal from the continuous monitoring data, and an alarm data separating unit 35a for separating alarm data from received data.
Alarm data recognizing means 35 having a type determining unit 35b for determining the type of alarm based on the alarm data.
And a center command to the camera terminal device 4 via the digital communication line 5 based on the alarm processing command at the time of alarm output from the alarm data recognition means 35 and the alarm command table 36b storing the alarm processing command for each alarm type. The center monitoring device 6 having a center control commanding unit 36 having a center control commanding unit 36a to send out, and a center monitoring device 6 having a center control commanding unit 36a.

Further, although not shown, the sensor means includes a smoke sensor for detecting smoke caused by a fire, a collapse sensor for detecting collapse or collapse of a building or debris, and a lightning strike to a power generation facility or a power transmission facility. Lightning sensor, flood sensor that detects flooding caused by flood damage, flooding caused by overflow of the water storage tank, etc., a fire alarm receiving terminal that receives alarm data from a fire alarm, and receives detection data from a gas detector. An additional gas detector terminal is installed.

Next, the general operation will be described. At the time of normal monitoring, the camera terminal device 4 converts the monitoring video signal captured by the camera 1 into compressed data by the compression unit 12 and generates
The compressed data is sent to the center monitoring device 6 via the digital communication line 5 and the compressed data is cyclically recorded by the cyclic recording means 14. The sensor detection data of the sensor means 2 is constantly monitored by the alarm means 15, and when the alarm means 15 determines that an abnormal situation has occurred, the alarm control means 16 determines the compression ratio of the compressed data, the transmission data selection, and the cyclic recording means. Control by condition. Further, the transmission data controlled under predetermined conditions is transmitted to the center monitoring device 6 via the digital communication line 5. The center monitoring device 6
The center control command section 36a sends a center command to the camera terminal device 4 via the digital communication line 5 based on the alarm processing command.

A configuration and detailed operation of the camera terminal device will be described with reference to FIG. 2 showing a main block diagram of an embodiment of the camera terminal device according to the present invention. The camera terminal device 4 of the embodiment includes an A / D 10 that converts an input video signal from the camera 1 into image data, and an MPE that compresses the image data.
An image data compression unit 12c in G format or JPEG format or a data thinning unit 12d for thinning out image data, a transmission data selection unit 13 for selecting and outputting transmission data by selecting various types of compressed data or uncompressed data, and various types of compression It has a recording selection unit 14a for selecting and inputting recording data by selecting data or uncompressed data, a recording memory 14b for recording recording data cyclically, and a recording control unit 14c for controlling storage and reproduction of the recording memory 14b. Patrol means 14
And a terminal ID storing the ID of the camera terminal device 4
A memory 21 and an abnormality determination unit 15 for performing a simple abnormality determination based on sensor detection data from the alarm detection means 15
a alarm means 15 having a judgment condition memory 15b for storing judgment conditions for storing judgment conditions for judgment of abnormality and an alarm control table 16b for storing alarm commands corresponding to the types of alarms. An alarm control unit 16 having an alarm control unit 16a for issuing an alarm control command to each unit in the apparatus based on the alarm command when the judgment is made;
A data superimposing unit 17 for generating superimposed transmission data in which alarm data and device ID data are superimposed, a time axis compression unit 19 for compressing the superimposed transmission data in a time axis,
Digital transmission line 5
And a communication control unit 20 for sending the data to the server.

Further, the center monitoring device 6 receives via the voice input terminal 3, the A / D 11 for converting a voice signal into digital voice data, and the digital communication line 5.
Command separation unit 18 that separates and outputs the center command
Etc. are additionally installed. Further, an image sensor 2b for detecting the movement of the intruder from the image data is additionally provided.

The detailed operation will be described with reference to FIG. 3 showing an example of data transmission after an alarm is generated according to the present invention and a schematic flowchart of alarm processing. The video signal from the camera 1 is converted to image data by the A / D 10, while the audio signal from the additionally provided audio input terminal 3 is converted to the audio data (digital audio data) by the A / D 11,
2 is input. After both are added by the data adder 12a, they are output as monitoring data in direct data, compressed data and thinned data formats.

The direct data is output as a through output 12b.

The compressed data is a data compression unit 12c capable of controlling the compression ratio from the outside. The data compression unit 12c is a moving image data compression tool, and the still image data compression tool is JPEG.
Data is compressed by such means.

The thinned data is output as intermittent data (general time lapse data) thinned out in units of fields or frames by a data thinning unit 12 d capable of externally controlling the thinning rate.

The recording selection unit 14a selects predetermined monitoring data from the compression unit 12 and cyclically records it in the recording memory 14b. As the recording memory 14b, a standardly equipped semiconductor memory, a detachable semiconductor disk or IC memory card, an HDD, or the like is selectively adopted depending on the data capacity of the cyclic recording. Recording control unit 14c
Performs control such as recording in the recording memory 14b, stopping recording, and cyclic playback in accordance with a control command from the alarm control unit 16a.

The transmission data selection unit 13
The data adding unit 12a selects the predetermined monitoring data from
To enter. The selection of the transmission data is performed by the alarm control unit 16
Set by the control command from a.

The data adder 12a outputs transmission data obtained by adding the above-described monitoring data, terminal ID data, alarm data, and the like in time series. The transmission data is input to the communication control unit 20 after the time axis of the data is compressed by the time axis compression unit 19. The compression of the time axis is for transmitting and receiving transmission signals from a plurality of camera terminal apparatuses to the same digital communication line in the form of packet communication transmission. In the system of the embodiment in which about 20 camera terminal apparatuses are connected. Then 1
The time axis is compressed below / 20.

The sensor selection unit 2a selects detection data from the various sensors described above based on a control command from the alarm control unit 16a and inputs the data to the abnormality determination unit 15a. The abnormality determination unit 15a determines and outputs occurrence of an abnormal situation based on the determination conditions stored and registered in the determination condition memory 15b. Judgment conditions are as follows: simple ON-OFF input such as infrared sensor input, fire alarm input, collapse sensor input, temperature sensor if it is determined that there is a repeated input such as input from an image sensor. In this case, a criterion is provided for, for example, a case where the follow-up observation is first performed in an intermediate manner using analog data, a case where a plurality of data such as an infrared sensor and an image sensor are combined and determined.

When the abnormality determination unit 15a outputs an abnormality determination, the alarm control unit 16a issues a control command to each unit in the device based on a command mode for each alarm type stored and registered in the control table 16b. Control table 16b
A circulating recording stop command mode for stopping the new recording in the circulating recording means 14, a circulating reproduction command mode for circulating and reproducing the recording data circulated and recorded in the circulating recording means 14, A cyclic reproduction superimposition command mode in which the cyclic reproduction data is superimposed on the real image data and transmitted, and an alarm data transmission command mode. The transmission data from the camera terminal device 4 is given priority to the center monitoring device 6. Priority transmission request mode for requesting permission to transmit, and compression means 1
2, a compression change command mode for issuing a command to change the compression ratio or the thinning ratio is stored and registered.

The communication control unit 20 sends the transmission data compressed on the time axis to the center monitoring device 6 via the digital communication line 5. The monitoring camera 1 of the embodiment is installed in a wide area for the purpose of monitoring a large-scale building, monitoring a factory premises, monitoring a dam or a power transmission facility, monitoring a tunnel or a water weir, and is installed in a disaster prevention center. Center monitoring device 6
Is connected by a public digital communication line and the rest is connected by a dedicated digital communication line. Wired optical LAN is used for monitoring inside buildings, and wireless LA is used in departments where line connection is difficult.
N is used. In another building, the existing IEEE13
A 94 standard serial line is used.

[0029] Dams in remote areas, transmission facilities, tunnels,
The camera terminal device 4 installed in a water weir or the like is communicatively connected by a packet communication line using a mobile phone. The camera terminal device 4 located in a non-reception area of a mobile phone, such as a mountain area or a remote island, uses a satellite telephone line using a communication satellite. Communication connection with a plurality of forms of digital communication lines is quasi-integratedly operated by packet communication transmission means using a communication control server (not shown).

A supplementary description of the center monitoring device 6 will be given.
The alarm processing table 36b of the center monitoring device 6 includes a priority transmission command mode for giving priority to transmission to a specific camera terminal device, a cyclic playback command mode for instructing transmission of monitoring data cyclically reproduced to a specific camera terminal device, A traveling recording command mode for instructing a specific camera terminal device to resume traveling recording is additionally stored.

Further, a terminal setting operation unit 38 b for setting a predetermined terminal ID in the terminal ID memory 21 of a specific camera terminal device via the digital communication line 5 in the center monitoring device 6, an alarm of the specific camera terminal device Control unit 1
Terminal setting operation section 38 for selectively setting a predetermined sensor in 6a
b, a terminal setting operation unit 38b for setting predetermined judgment conditions in the judgment condition memory 15b, and a terminal setting operation unit 38b for setting recording selection of monitoring data of a predetermined compression rate or thinning rate in the cyclic recording means 14 are additionally provided. I have.

The center communication control unit 30 has a role of a communication server for the 20 camera terminal devices connected to the digital communication line 5, and all the communication control units 20, 2
0 '. . Is given permission to send. Normally, 20 camera terminals 4, 4 '. . The transmission data that has been time-axis-compressed to 1/20 of the received data is sequentially received and demodulated. The monitoring data separation unit 31 separates monitoring data such as an image and a sound from the received and demodulated transmission data, and temporarily records the monitoring data in the recording / reproducing means. The image signal generation unit 32 reads out image data of a specific device ID on a real time axis, converts the read image data into standard image data, and includes a built-in D / A (Digital Analog Converter).
To generate an analog video signal, which is displayed on the monitor 7 for monitoring. At this time, image generation processing such as expansion processing of a compressed image, a multi-screen in which a plurality of camera images are superimposed, a sequential display image in which a plurality of camera images are sequentially displayed, and a smoothing image for generating a continuous video signal from thinned image data Is performed, but the description is omitted because it is not the essence of the present application.

As in the case of the image signal generation, the audio signal generation unit 33 reads out audio data of a specific device ID on a real time axis, generates an audio signal, and outputs the audio signal from the audio output unit 8.

The alarm recognizing unit 35 monitors the presence / absence of alarm data for each device ID in the transmission data by the alarm separating unit 35a, separates the alarm data and inputs the alarm data to the type determining unit 35b, and determines and outputs the type of the alarm. I do. The center control command unit 36 sends a control command to all the camera terminal devices 4 based on the command mode stored and registered in the alarm command table 36b in accordance with the judgment of the type of the alarm by the alarm recognition unit 35. The control command is sent to each camera terminal device 4 via the center communication control unit 30 and the digital communication line 5. At the same time, a line control command is also issued to the center communication control unit 30. Based on the line control command, the center communication control unit 30 performs line control such as assigning a preferential transmission time to the camera terminal device having the specific device ID or suppressing transmission from another device.

The command modes stored and registered in the alarm command table 36 b include a priority transmission command mode for giving a transmission priority to a specific camera terminal device, a cyclic reproduction command mode for commanding transmission of cyclically reproduced monitoring data,
This is a patrol recording command mode for instructing resumption of patrol recording. The instruction of the command mode of the center operation unit 3
Operation input is performed from 8a.

The alarm signal generator 37 generates an alarm signal based on the separated alarm data, and superimposes the generated alarm signal on the monitoring data. The alarm signal superimposed on the monitoring data is superimposed on the video signal or the audio signal and output.

FIG. 3A shows a flow of transmission data in which the recorded image data of the cyclic recording unit 14 is cyclically reproduced after the alarm is generated, and transmitted while being superimposed on the real image data. (B) is a schematic operation flow at the time of alarm processing. The transmission data is real image data (UD
P) Frame 1, header, recorded image data (TCP),
Header, real layer data (UDP) frame 2, header, recorded image data (TCP). . . However, as a matter of course, the real image data is decimated to 1/2 or data-compressed, resulting in image data sacrificing image quality.

The presence or absence of an alarm is normally set in a frame period unit ST2. In the normal monitoring state, recording of image data is performed cyclically in the recording memory 14b, and new real image data is overwritten and recorded on an image data portion exceeding the recording memory capacity. If the remaining recording time is within several tens of seconds, a standard internal memory is sufficient, but if the remaining recording time is more than tens of minutes depending on the monitoring site, a removable semiconductor disk or HDD is additionally mounted.

When an alarm occurs, ST2, the transmission data is transmission ST12 of the real image (frame 1) for one frame, transmission ST13, then, the recorded data is reproduced from the head and transmitted sequentially ST14, and then the real image (frame 2).
, And the reproduction data of the next recording data is transmitted. . . . . Becomes This transmission mode continues until the last frame of the recording data, and when the transmission of the last frame ends, the process returns to the normal monitoring state in ST16.

The overall operation of the additionally installed terminal setting operation unit 38b will be described. Since the detailed configuration of the terminal setting operation unit 38b is shown in the figure, the description is omitted, and only the setting function is introduced. The setting function of the camera terminal device includes a setting of a predetermined terminal ID in the terminal ID memory 21 of the specific camera terminal device 4, a selection setting of a predetermined sensor in the alarm control unit 16a,
The predetermined condition is set in the judgment condition memory 15b, and the recording selection setting of the monitoring data of the predetermined compression ratio or the thinning ratio is performed. The camera terminal devices 4, 4 ',. . . Sent to.

The control command data and the terminal setting data for the specific terminal ID transmitted from the center monitoring device 6 are:
The signal is received and demodulated by the communication control unit 20 of the corresponding terminal ID. The center command separation unit 34 separates these data from the received data and inputs the data to the alarm control unit 16a. The alarm control unit 16a issues a control command to each unit based on the input control command data and terminal setting data.

The terminal ID setting data is sent to the terminal ID memory 21 and overwritten and registered. The sensor selection setting data is transmitted from the alarm control unit 16a to the sensor selection unit 2a.
Make the settings corresponding to. The judgment condition setting data is input to the judgment condition memory 15b and overwritten or additionally registered. The recording selection setting data is transferred to the recording control unit 14c, and the setting of the monitoring data to be recorded is changed.

As described above, by using the additionally installed terminal setting operation unit 38b, the contents of the alarm generation or the monitoring data of the camera terminal device 4 installed at a remote place can be changed.
Can be controlled remotely. Alternatively, the monitoring data recorded cyclically can be reproduced again for accident analysis. Further, according to an operation command from the center operation unit 38a, it is possible to cause the specific camera device 4 to transmit only real image data without data compression at the time of an alarm.

[0044]

The present invention is embodied in the manner described above, and has the following effects. At the time of normal monitoring, the camera terminal device generates a compressed data of the monitoring video signal imaged by the camera by the compressing means, and then sends the compressed data to the center monitoring device via the digital communication line and cyclically transmits the compressed data to the cyclic recording means. Recording, the sensor detection data of the sensor means is constantly monitored by the alarm means, and if the alarm means determines that an abnormal situation has occurred, the alarm control means determines the compression ratio of the compressed data, the transmission data selection, and the cyclic recording means under predetermined conditions. And the transmission data controlled under predetermined conditions is transmitted to the center monitoring device via the digital communication line. The center monitoring device separates and recognizes the alarm data from the transmission data, and the center control command section performs the alarm processing. Send center command to camera terminal device via digital communication line based on command I was able to carry out the proposal of Ttowaku surveillance camera system.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of an embodiment of a network monitoring camera system according to the present invention.

FIG. 2 is a main part block diagram of an embodiment of a camera terminal device according to the present invention.

FIG. 3 is a schematic flow chart of an example of data transmission after alarm occurrence and alarm processing according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera 2 Sensor means 2a Sensor selection part 2b Image sensor 3 Audio input terminal 4, 4 'Camera terminal device 5 Digital communication line 6 Center monitoring device 7 Monitor 8 Audio output means 10, 11 A / D 12 Compression means 12a Data addition part 12b Through output 12c Data compression unit 12d Data thinning unit 13 Transmission data selection unit 14 Cyclic recording unit 14a Storage selection unit 14b Recording memory 14c Recording control unit 15 Alarm unit 15a Abnormality judgment unit 15b Judgment condition memory 16 Alarm control unit 16a Alarm control Unit 16b alarm control table 17 data superposition unit 18 center command separation unit 19 time axis compression unit 20 communication control unit 21 ID memory 30 center communication control unit 31 monitoring data separation unit 32 image signal generation unit 33 audio signal generation unit 34 recording / playback Step 35 Alarm data recognition unit 35a Alarm data separation unit 35b Type determination unit 36 Center control command unit 36a Center control command unit 36b Alarm command table 37 Alarm signal generation unit 38a Center operation unit 38b Terminal setting operation unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/173 620 H04N 7/173 620Z F term (Reference) 5C054 CA04 CA05 CD03 CG07 CH04 DA01 DA07 DA08 EA01 EA03 EA05 EA07 EB05 EG06 EG09 FE26 FE28 GA01 GA04 GD06 HA01 HA18 HA20 HA38 5C064 BA07 BB05 BC10 BC23 BC24 BC25 BD13 5C087 AA02 AA03 AA19 AA37 BB14 BB32 BB74 DD02 DD03 DD22 DD27 DD28 EE16 GG01 FF02 GG02 FF01 GG02 FF02

Claims (32)

[Claims] 1. monitoring of intruders, monitoring of factories and power generation facilities,
Surveillance television cameras (hereinafter referred to as cameras) installed at multiple surveillance sites such as dams and tunnels
A sensor means such as a motion detection sensor or an infrared sensor for detecting an abnormal situation at the monitoring site; and an A / D (An) for converting an input video signal from the camera into digital image data (hereinafter abbreviated as image data).
alog Digital Converter), compression means for compressing or thinning out the image data to generate compressed data, a transmission data selection unit for selecting and outputting transmission data by selecting the compressed data or uncompressed data, Cyclic recording means for selecting data or uncompressed data and cyclically recording the data; alarm means for selecting sensor detection data from the sensor means and judging an abnormal situation to generate and output an alarm; and A camera terminal device comprising: an alarm control unit that issues an alarm control command to a compression ratio of the compressed data, a selection of transmission data, and a cyclic recording unit, and a communication control unit that communicates and outputs the transmission data, sensor detection data, and the like. And a dedicated or public digital communication line for communicatively connecting the plurality of camera terminal devices, A center communication control unit for communication connection with the digital communication line, a monitoring data separation unit for separating monitoring data from data received by the center communication control unit, and a recording for temporarily recording the monitoring data and converting and outputting continuous monitoring data A reproducing unit; an image signal generating unit that generates an image signal from the continuous monitoring data; an alarm data separating unit that separates the alarm data from the received data; and a type determining unit that determines the type of the alarm based on the alarm data. An alarm data recognition unit, an alarm command table storing alarm processing commands for each alarm type, and the camera terminal device via the digital communication line based on the alarm processing command when the alarm data recognition unit outputs an alarm. Has a center control command section that sends a center command to And a center monitoring device having a center monitoring device having a center control device.In normal monitoring, the camera terminal device generates a monitoring video signal captured by the camera into compressed data by the compression device, and then connects the digital communication line. The compressed data is sent to the center monitoring device via the communication device and the compressed data is recorded in the traveling recording device cyclically. The sensor detection data of the sensor device is constantly monitored by the alarm device. When it is determined, the alarm control means controls the compression ratio of the compressed data, the transmission data selection, and the cyclic recording means under predetermined conditions, and transmits the transmission data selected under predetermined conditions to the center via the digital communication line. The center monitoring device separates and recognizes the alarm data from the transmission data. Network monitoring camera system the central control instruction unit, characterized in that the delivering center command to the camera terminal device via the digital communication line on the basis of the alarm processing instructions. 2. The network surveillance camera system according to claim 1, wherein a smoke sensor for detecting a smoke caused by a fire is additionally provided in said sensor means. 3. The network surveillance camera system according to claim 1, wherein a collapse sensor for detecting collapse or collapse of a building or debris is additionally provided in the sensor means. 4. The network surveillance camera system according to claim 1, wherein a lightning strike sensor for detecting a lightning strike to a power generation facility, a power transmission facility, or the like is additionally installed in the sensor means. 5. The network surveillance camera system according to claim 1, wherein an immersion sensor for detecting inundation due to flood damage, inundation due to overflow of the water storage tank, and the like is additionally provided in the sensor unit. 6. The network surveillance camera system according to claim 1, wherein a fire alarm receiving terminal for receiving alarm data from the fire alarm is additionally installed in the sensor means. 7. The network surveillance camera system according to claim 1, wherein a gas detector terminal for receiving detection data from a gas detector is additionally provided in the sensor means. 8. A camera terminal device comprising: an A / D for converting an input video signal from the camera into image data; and an image data compression unit for compressing image data, such as an MPEG format or a JPEG format, or an image data compression unit. A data thinning unit for thinning out (time laps), a transmission data selection unit for selecting and outputting the transmission data by selecting the compressed data or non-compressed data, and selecting and inputting the recording data by selecting the compressed data or non-compressed data A circulating means having a recording selection unit for performing recording, a recording memory for cyclically recording the recording data, a recording control unit for controlling storage and reproduction of the recording memory, and storing an ID (device number) of the camera terminal device. An abnormality judging unit for making a simple abnormality judgment based on the terminal ID memory which is present and the sensor detection data from the alarm detection means, and a judgment of the abnormality judgment. An alarm means having a judgment condition memory storing conditions, an alarm control table storing an alarm control command corresponding to the type of the alarm, and when an abnormality judgment is made, the inside of the device based on the alarm command is determined. An alarm control unit having an alarm control unit for performing an alarm control in each unit, and a communication control unit for superimposing the transmission data and the alarm data from the alarm control unit and transmitting the data to the digital communication line. 2. The network surveillance camera system according to claim 1, wherein 9. An audio input terminal and an A / D for converting an audio signal into digital audio data are provided to the camera terminal device.
9. The network surveillance camera system according to claim 8, further comprising: 10. The camera terminal device further comprises a center command separating unit for separating and outputting a center command received from the center monitoring device via the digital communication line. 2. A network surveillance camera system according to item 1. 11. The network surveillance camera system according to claim 8, wherein the recording memory of the patrol recording unit is a removable semiconductor disk or an IC card. 12. The network surveillance camera system according to claim 8, wherein the recording memory of the patrol recording unit is a hard disk drive (HDD) by a magnetic recording / reproducing unit. 13. The network surveillance camera system according to claim 8, wherein a plurality of judgment conditions for making an abnormality judgment based on a plurality of sensor detection data are additionally stored in a judgment condition memory of said alarm means. 14. A repetition detection judgment condition for judging an abnormality when sensor detection data is repeatedly inputted a predetermined number of times into a judgment condition memory of said alarm means. The network surveillance camera system as described. 15. When the sensor detection data indicates an intermediate value from an abnormal value in a judgment condition memory of the alarm means,
9. The network surveillance camera system according to claim 8, wherein an intermediate determination condition for performing an intermediate abnormality determination is additionally stored. 16. The network surveillance camera system according to claim 8, wherein a cycle recording stop command mode for stopping new recording in said cycle recording means is additionally stored in a control table of said alarm control means. 17. The network monitoring system according to claim 8, wherein a cycle reproduction command mode for circulating and reproducing said recording data circulated and recorded in said circulation recording means is additionally stored in a control table of said alarm control means. Camera system. 18. A recirculation reproduction superimposition command mode for recirculating recording data cyclically recorded by the recirculation recording means and superimposing and transmitting the cyclic reproduction data to real image data is added to the control table of the alarm control means. 9. The network surveillance camera system according to claim 8, wherein the system is stored. 19. The network surveillance camera system according to claim 8, wherein the alarm data transmission command mode is additionally stored in a control table of the alarm control means. 20. The control table of the alarm control means further stores a priority transmission request mode for requesting the center monitoring device to request permission to transmit transmission data from the camera terminal device with priority. 9. The network surveillance camera system according to claim 8, wherein: 21. The network surveillance camera according to claim 8, wherein a compression change command mode for instructing the compression means to change a compression rate or a thinning rate is additionally stored in a control table of the alarm control means. system. 22. The network surveillance camera system according to claim 1, wherein the digital communication line is a wired or wireless LAN (Local Area Network). 23. The digital communication line is connected to an IEEE
2. The network surveillance camera system according to claim 1, wherein the communication line conforms to a 1394 standard. 24. The network surveillance camera system according to claim 1, wherein the digital communication line is a packet communication line by wireless means such as a mobile telephone network. 25. The network surveillance camera system according to claim 1, wherein the digital communication line is a packet communication line using a communication satellite. 26. The network surveillance camera system according to claim 1, wherein a priority transmission command mode for giving a priority to transmission to a specific camera terminal device is additionally stored in an alarm processing table of the center monitoring device. . 27. The replay playback command mode for commanding the transmission of monitoring data replayed to a specific camera terminal device in the alarm processing table of the center monitoring device is additionally stored. Network surveillance camera system. 28. The network surveillance camera according to claim 1, wherein a tour recording command mode for instructing a specific camera terminal device to resume tour recording is additionally stored in the alarm processing table of the center monitoring device. system. 29. A terminal setting operation unit for setting a predetermined terminal ID in a terminal ID memory of the specific camera terminal device via the digital communication line in the center monitoring device. 2. The network surveillance camera system according to claim 1, wherein 30. A terminal setting operation unit for selecting and setting a predetermined sensor in the alarm control unit of the specific camera terminal device via the digital communication line, is additionally provided in the center monitoring device. The network surveillance camera system according to claim 1, wherein 31. A terminal setting operation unit for setting a predetermined judgment condition in a judgment condition memory of said specific camera terminal device via said digital communication line in said center monitoring device. 2. The network surveillance camera system according to claim 1, wherein 32. A terminal setting operation in which the center monitoring device sets, via the digital communication line, a recording selection setting of monitoring data of a predetermined compression ratio or a thinning ratio in a cyclic recording unit of the specific camera terminal device. 2. The network surveillance camera system according to claim 1, further comprising an additional unit.