CN1101632C

CN1101632C - intelligent monitoring device for four-picture image acquisition device

Info

Publication number: CN1101632C
Application number: CN95111013A
Authority: CN
Inventors: 吴乐南; 陈坚
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-19
Filing date: 1995-04-19
Publication date: 2003-02-12
Anticipated expiration: 2015-04-19
Also published as: CN1120711A; CN1514396A; CN1313959C

Abstract

The present invention relates to an intelligent supervisory control device for a four-picture image collector, which is the renovation of an ordinary video monitoring and supervisory control system of a slowly recording video recorder of a four-picture divider. The present invention belongs to the technical fields of computer application, computer safety protection, and image data collection, compression and storage. The present invention directly combines and integrates a black and white four-picture divider and a microcomputer image collecting card into a 'four-picture image collecting card'. The present invention simplifies the existing 'analog-digital-analog' system and the existing 'analog-digital-analog-digital' system into an 'analog-digital' system to adopt a compression algorithm combining intraframe coding and interframe coding. The present invention can simultaneously or respectively monitor images from four cameras and store image information.

Description

Intelligent monitoring device for four-picture image acquisition device

One, technical field:

The present invention a kind ofly adds the ordinary video of recording video tape recorder slowly to four image splitters and monitors and the innovation of supervisory control system, belongs to the technical field of computer application in safety precaution and image data acquiring and compressed storage.

Two, background technology:

For security personnel are monitored and record with taking precautions against target, all use industrial camera and video-frequency monitor and common TV video tape recorder at present, but writing time is limited.Desire prolongs writing time, optional time lag (record slowly) video tape recorder, and except that price was more expensive, the picture frame prompt drop was low, and is also influenced synchronously.In addition, in order to monitor a plurality of targets simultaneously and to reduce system synthesis originally, adopt video switcher or multi-image divider to make a plurality of cameras public same monitors of energy and video tape recorder, wherein black and white four image splitters are more common, and the cost of " mould-number-Mo " of this employing camera+four image splitters+video-frequency monitor/time lapse imaging recorder or " mould-number-Mo-number " system is still than higher.Adopting analog video tape in addition is wearing and tearing along with magnetic head and tape as the inherent defect of storage medium, the picture quality of playback can be worse and worse, and be subject to the journal mode of video tape and mechanism's inertia of video tape recorder, the intelligent degree of these supervising devices is low, can not accomplish being monitored object and recorded content is accepted or rejected to some extent.

Three, summary of the invention:

(1) goal of the invention

Purpose of the present invention just provides that a kind of access speed is fast, automaticity is high and price is lower, is the intelligent monitoring device for four-picture image acquisition device of " mould-number " system with whole monitoring system by " mould-number-Mo " or " mould-number-Mo-number " system simplification.

(2) technical scheme

Technical solution of the present invention is directly black and white four image splitters and the merging of microcomputer image pick-up card to be integrated into one " four-picture image capture card ".With existing " mould-number-Mo " and " mould-number-Mo-number " system simplification is " mould-number " system, and the compression method that has adopted intraframe coding to combine with interframe encode.Specifically be to adopt one vision signal amplified preliminary treatment with level clamping, a vision signal four is selected a switch, one to the analog to digital converter through pretreated video signal sampling, a sync separator that vision signal is extracted the row field sync signal, the time schedule controller that the sequential of entire image collection and demonstration is controlled, the address generator of a frame memory when carrying out IMAQ, data during a selection images acquired, the address, Microcomputer Data when control bus and image show, the address, the either-or switch of control bus, a frame memory that is used to store view data, and microcomputer interface, constitute the four-picture image capture card, be hardware components of the present invention.Wherein preliminary treatment comprises four tunnel identical preprocessor circuit, sync separator also has four tunnel identical synchronizing separator circuits, the output that four inputs of preliminary treatment and sync separator connect four cameras respectively is AV1-AV4, pretreated four outputs connect four inputs that vision signal four is selected a switch respectively, vision signal four is selected the input of the output termination analog to digital converter of a switch, the output termination either-or switch of analog to digital converter, the output and the time schedule controller of sync separator join, the control output " CB " of sequential control circuit is held directly and either-or switch joins, address wire is joined the data wire of either-or switch " DB " by address wire " AB " end of address generator and either-or switch, control line " CB ", address wire " AB " respectively with frame memory and microcomputer interface in corresponding " DB ", " CB ", " AB " line is connected.

Preliminary treatment comprises that four tunnel identical pre-process circuits are preprocessor 1-1, preprocessor 1-2, preprocessor 1-3, preprocessor 1-4, and wherein preprocessor 1-1 comprises capacitor C P101-103, resistance R P101-104, operational amplifier U101; Vision signal four selects a switch mainly to comprise U210A-201D, and the output of four tunnel in the preliminary treatment is that the output of operational amplifier selects four inputs of a switch to join with vision signal four respectively.Analog to digital converter is main to constitute by U301, and the output that vision signal four is selected a switch is that " VIN " of U301 holds and be connected by capacitor C 201 and analog-to-digital input.Sync separator also is made of four tunnel identical synchronizing separator circuits, i.e. separated in synchronization 4-1, separated in synchronization 4-2, separated in synchronization 4-3, separated in synchronization 4-4.Time schedule controller mainly comprises integrated circuit U501, U502, camera 1-4 four output line AV1-AV4 be connected with the input of separated in synchronization 1-4 with preprocessor 1-4 accordingly respectively.Separated in synchronization 4-1 is mainly by capacitor C P401-403, resistance R P401-403 and integrated circuit U401 constitute, the interface " VSN; CSN; ODEN " of its output integrated circuit U401 is connected with the interface " INO; INI; IN2 " of integrated U501 respectively, corresponding separated in synchronization 4-2, separated in synchronization 4-3, separated in synchronization 4-4 output also be connected with the interface " IN7-IN13 " of integrated U501 respectively, the output of interface " IN0-IN2 " the termination separated in synchronization 4-1 of integrated circuit U501 in the time schedule controller (5), the interface of integrated circuit U501 " IN3-IN6 " end connects four respectively and selects the interface " C " of integrated circuit U201A-D in the switch to hold, and the interface of integrated circuit U501 " IN7-IN13; I/O21; I/O22 " meets separated in synchronization 4-2 respectively, separated in synchronization 4-3, the output of separated in synchronization 4-4.Address generator comprises U601-604; Either-or switch comprises integrated circuit U701-704; Frame memory comprises integrated circuit U801 and U802; Microcomputer interface comprises integrated circuit U901-904.Wherein the output of either-or switch is that the interface " 1Y-3Y " of the interface " 1Y-4Y " of integrated circuit U701-703 and integrated circuit U704 is integrated circuit U801 with the data wire of frame memory respectively, the interface of U802 " A0-A14 " is connected, select of the sampling of the vision signal of a switch process through preliminary treatment and vision signal four like this through analog to digital converter, with the sampling after DID and the Microcomputer Data bus through microcomputer interface, send into integrated circuit U801 in the frame memory by either-or switch, the data line interface of U802 " D2-D7 " respectively with microcomputer interface in integrated circuit U901, the interface of U902 " B3-B8 " end links to each other, and the interface " I/00-I/011 " that meets the integrated circuit U502 in the time schedule controller, interface " QA; QB; QC; the QD " end of integrated circuit U601-604 in the device of the interface of integrated circuit U701-704 " 1A-4A " end difference ground connection location in the either-or switch, the interface of integrated circuit U701-704 " 1B-4B " end meets " MA1-MA15 " in the microcomputer interface bus respectively, like this control signal and the system controlled by computer bus signals to frame memory of the time schedule controller generation control end of sending into frame memory by either-or switch.In addition, integrated circuit U301 " B0-B5 " holds the interface " IN8-IN13 " that meets integrated circuit U502 in the time schedule controller respectively in the analog to digital converter.

The course of work of this device is: at first microcomputer sends acquisition through microcomputer interface to the acquisition controlling mouth, after time schedule controller (being made of programming device) receives, produces the required name of IMAQ and plants control signal.This moment, either-or switch was selected required data, address, the control general line of IMAQ.Four tunnel vision signals (from four different cameras) select a switch to select one road signal to enter analog to digital converter through preliminary treatment by vision signal four, and the DID of output is sent into frame memory through either-or switch.The frame memory address of this moment is produced by address generator.Control signal is produced by time schedule controller.Microcomputer is constantly inquired about the acquisition controlling mouth, finishes until inquiring to gather, and this moment, microcomputer can be taken over the frame memory (or using interrupt method) on the image pick-up card.Either-or switch is selected data, address, the control bus of microcomputer.At this moment the video memory (VRAM) that view data can be sent into Video Graphics Array (VGA) directly shows, also can deposit with data file.One width of cloth digital picture transmits and finishes, and sends out the acquisition controlling word by software again, circulation said process (gather, store, transmit).

Pretreated four outputs among the present invention select the input of a switch directly to link to each other with vision signal four, and one of formation can be amplified incoming video signal, level promotes, the elementary video signal output apparatus of level clamping; Elementary vision signal is sent into analog to digital converter and is sampled, and the DID after the sampling links to each other with the data wire of frame memory by either-or switch through microcomputer interface with the Microcomputer Data bus; Address generator links to each other with the address wire of frame memory by either-or switch through microcomputer interface with the microcomputer address bus; The control signal to frame memory that time schedule controller produces links to each other with the control end of frame memory by either-or switch with the system controlled by computer bus; The capable field sync signal and the parity field identification signal of sync separator output are sent into time schedule controller; Microcomputer Data, control bus link to each other with time schedule controller by microcomputer interface, the mutually other entire image collection of transmitting control information and show that required various timing control signals produce by time schedule controller, are sent to vision signal four and select a switch, analog to digital converter, address generator, either-or switch, frame memory, microcomputer interface.

(3) technique effect

The present invention directly is integrated into one " four-picture image capture card " with black and white four image splitters and the merging of microcomputer image pick-up card, " space-time is multiplexing " mode timesharing digitlization with uniqueness, read and the direct image frame (sampling resolution to each camera is 320 * 200) that on same microcomputer monitor, shows simultaneously from four different cameras, also can be by the program control selection collection of main frame, show any one tunnel in four tunnel, two-way or three road images, and correspondingly accelerated display speed, initiative is " mould-number " system with existing " mould-number-Mo " and " mould-number-Mo-number " system simplification thus.For reduced volume, reduce cost and improve reliability, fast and effeciently directly utilize the hard disk of main frame to store view data as much as possible, the compression method that has adopted intraframe coding to combine with interframe encode, and can be in compressed storage according to judging with the comparative result of predefined motion thresholding, send corresponding alarm signal, or live view is reached at a distance.Because the employing of computer, image is scalable when recovering to show, strengthen and carry out other processing, and function can constantly expand.

It combines TV tech and computer technology, makes full use of the video complex functionality that Video Graphics Array (VGA) card itself provides, thereby omits the synthetic and monitor of digital-to-analog converter (D/A) video of traditional capture card, reduces cost, improves cost performance.The control of IMAQ card is simple in addition, gives the software work person with the great degree of freedom.The picture compression efficiency height, alarm threshold can be set according to actual conditions, the high wide application of degree of intelligence.

Develop voluntarily according to self-technique deposit and market demand information.Because along with development of market economy, fields such as bank, traffic, electric power, railway, market, public security, security, museum, warehouse, hotel, office building and military installations are increasing for the demand of safety precaution and on-the-spot record warning system, requirement is more and more higher, adapt to and existing video recorder system is difficult, the present invention can be used as a kind of regeneration product, directly is difficult to estimate with indirect economy and social benefit.

Four, description of drawings:

Fig. 1 is a structured flowchart of the present invention, comprising microcomputer 10;

Fig. 2 is the circuit theory diagrams that preliminary treatment 1 among the present invention, vision signal four are selected a switch 2, analog to digital converter 3, sync separator 4, time schedule controller 5;

Fig. 3 is the circuit theory diagrams of address generator 6 among the present invention, either-or switch 7, frame memory 8;

Fig. 4 is the circuit theory diagrams of microcomputer interface 9 among the present invention.

Five, embodiment

Narrate one embodiment of the present of invention below in conjunction with accompanying drawing:

The input of integrated circuit U101 in the preliminary treatment 1 is connected to resistance R P101, RP102, potentiometer RP103 and capacitor C P101, CP102, CP103, and regulator potentiometer RP103 can change multiplication factor, and the output of integrated circuit U101 is connected to resistance R P104; Four road pre-process circuit structures in the preliminary treatment 1 are the same.

Vision signal four selects the integrated circuit U201 in the switch 2 to adopt MC14066.

Integrated circuit U301 in the analog to digital converter 3 adopts CA3306, is connected to resistance R 301, R302 and capacitor C 302, C303, C304, C305, C306 at the input of integrated circuit U301.

Integrated circuit U401 in the sync separator 4 adopts LM1881, is connected to resistance R P401, RP402, RP403 at the input of integrated circuit U401, and different RP403 can produce a row composite synchronizing signal of PAL or TSC-system; No. four synchronizing separator circuit structures are the same in the sync separator 4.

Integrated circuit U501, U502 in the time schedule controller 5 adopts electric erazable programmable logical device BPLDATV2500H, and programming language is the ATMEL-ABEL language.

Integrated circuit U601, U602, U603, U604 in the address generator 6 all adopt 74LS161.

Integrated circuit U701, U702, U703, U704 in the either-or switch 7 all adopt 74LS157.

Integrated circuit U801, U802 in the frame memory 8 all adopts AT28H256 (or other 32K * 8bits static RAM (SRAM)).

Integrated circuit U901, U902 in the microcomputer interface 9 all adopt 74LS245, and integrated circuit U903 adopts 74LS688, and integrated circuit U905 adopts LM7805.

The interface of integrated circuit U301 " B0-B5 " end connects the interface " IN8-IN13 " of the integrated circuit U502 in the time schedule controller 5 respectively in the analog to digital converter 3, the output of the interface of integrated circuit U501 " IN0-IN2 " termination separated in synchronization 4-1 in the time schedule controller 5, the interface of integrated circuit U501 " IN3-IN6 " end connects four respectively and selects the interface " C " of integrated circuit U201A-D in the switch 2 to hold, the interface of integrated circuit U501 " IN7-IN13; I/O21; I/O22 " meets separated in synchronization 4-2 respectively, separated in synchronization 4-3, the output of separated in synchronization 4-4, interface " QA; QB; the QD " end of integrated circuit U601-604 in the generator 6 of the interface of integrated circuit U701-704 " 1A-4A " end difference ground connection location in the either-or switch 7, the interface of integrated circuit U701-U704 " 1B-4B " end connects " MA1-MA15 " interface in microcomputer interface 9 buses respectively, the output interface " 1Y-4Y " of integrated circuit U701-703 and the end of the interface " 1Y-3Y " among the integrated circuit U704 meet integrated circuit U801 in the frame memory 8 respectively, interface among the U802 " A0-A14 ", integrated circuit U801 in the frame memory 8, the data line interface of U802 " D2-D7 " respectively with microcomputer interface 9 in integrated circuit U901, interface " I/00-I/011 " end of integrated U502 in the interface of U902 " B3-B8 " end and the time schedule controller 5 joins.

After will assembling with top, link up, just can monitor all images or the arbitrary image that transmit by four-way CCD camera simultaneously, and signal can be stored or reach at a distance by microcomputer interface 9 and microcomputer 10.

Claims

1, a kind of intelligent monitoring device for four-picture image acquisition device, form by IMAQ part and control part branch, the IMAQ that it is characterized in that this device comprises that partly one is amplified preliminary treatment (1) with level clamping to vision signal, vision signal four is selected a switch (2), analog to digital converter (3), sync separator (4), control section comprises time schedule controller (5), address generator (6), either-or switch (7), frame memory (8), microcomputer interface (9), directly four image splitters and the merging of microcomputer image pick-up card are integrated into a device for four-picture image acquisition, wherein preliminary treatment (1) comprises four tunnel identical preprocessor circuit, sync separator (4) also has four tunnel identical synchronizing separator circuits, the output signal end that four inputs of preliminary treatment (1) and sync separator (4) connect four cameras respectively is AV1-AV4, four outputs of preliminary treatment (1) connect four inputs that vision signal four is selected a switch (2) respectively, vision signal four is selected the input of the output termination analog to digital converter (3) of a switch (2), the output termination either-or switch (7) of analog to digital converter (3); The output of sync separator (4) and time schedule controller (5) join, the control output " CB " of time schedule controller (5) is held directly and either-or switch (7) joins, the address wire of time schedule controller (5) is joined by address wire " AB " end of address generator (6) with either-or switch (7), and the data " DB " of either-or switch (7), control " CB ", address " AB " line are connected with middle corresponding " DB, CB, the AB " line of frame memory (8) and microcomputer interface (9) respectively.

2, intelligent monitoring device for four-picture image acquisition device according to claim 1 is characterized in that interface " B0-B5 " end of integrated circuit U301 in the analog to digital converter (3) connects the interface " IN8-IN13 " of the integrated circuit U502 in the time schedule controller (5) respectively.

3, intelligent monitoring device for four-picture image acquisition device according to claim 1 and 2, the output that it is characterized in that interface " IN0-IN2 " the termination separated in synchronization (4-1) of integrated circuit U501 in the time schedule controller (5), the interface of integrated circuit U501 " IN3-IN6 " end connects four respectively and selects the interface " C " of integrated circuit U201A-D in the switch (2) to hold, and the interface of integrated circuit U501 " IN7-IN13, I/O21, I/O22 " connects the output of separated in synchronization (4-2), separated in synchronization (4-3), separated in synchronization (4-4) respectively.

4, intelligent monitoring device for four-picture image acquisition device according to claim 1, interface " QA; QB; the QD " end that it is characterized in that the middle integrated circuit U601-604 of interface " 1A-4A " end difference ground connection location generator (6) of integrated circuit U701-704 in the either-or switch (7), the interface of integrated circuit U701-U704 " 1B-4B " end connects " MA1-MA15 " interface in microcomputer interface (9) bus respectively, and the output interface " 1Y-4Y " of integrated circuit U701-703 and the end of the interface " 1Y-3Y " among the integrated circuit U704 meet integrated circuit U801 in the frame memory (8) respectively, interface among the U802 " A0-A14 ".

5, according to claim 1 or 4 described intelligent monitoring device for four-picture image acquisition device, the data line interface " D2-D7 " that it is characterized in that integrated circuit U801, U802 in the frame memory (8) is held with the interface " B3-B8 " of microcomputer interface (9) middle integrated circuit U901, U902 respectively, and the interface " I/00-I/011 " of the integrated U502 in the time schedule controller (5) end joins.