CN2435294Y - Wireless image anti-theft means for vehicle - Google Patents

Abstract

The utility model relates to a wireless image theftproof device for a vehicle, which can monitor in real time and has the function of image storage. The utility model comprises a transmitting part which is composed of a camera, a code insertion circuit for address codes, a sensor, a sensing signal amplifying circuit, a power supply controlling circuit, a modulating circuit and a transmitting circuit, and a receiving part which is composed of a radio frequency receiver, a demodulation device, a TV amplifier, a memory card, a display screen and a buzzer. The device can learn that whether an automobile is stolen or not in time and learn the situation of the temporal field, and field image information is stored when a burglary case occurs. The stored data can be stored in a computer and is regarded to provide a suasive clue for solving the case.

Description

Automobile wireless image anti-joyride device

The utility model relates to the radio alarming device, relate in particular to a kind of automobile burglar that is applicable to, it is carried out the wireless visual anti-joyride device of remote monitor.

At present, the stolen phenomenon of automobile is very serious, and the car owner in time learns field condition when relying on general auto alarm device to be difficult in report to the police to take place, and not only reports by mistake to the car owner and brings very big inconvenience, and can't obtain to support the strong clue of solving a case again after the burglar generation.This makes the public security officer track down when stealing the car case need spend a large amount of police strength, material resources, and the time of solving a case simultaneously is long, case-solving rate is low, is difficult in time arrest criminal, and the vehicle of finding lost brings serious harm to people's lives.

The purpose of this utility model is the deficiency at above-mentioned existence, and a kind of automobile burglar that is applicable to is provided, and has the automobile wireless image anti-joyride device of warning and image demonstration, memory function.

Automobile wireless image anti-joyride device of the present utility model, comprise: radiating portion and receiving unit, it is characterized in that: radiating portion has the camera of a capture video signal, this camera is inserted decoding circuit with the transmitting terminal address code simultaneously and is connected with modulation circuit, modulation circuit is connected with transmission circuit, the transducing signal amplifying circuit is connected with power control circuit, and power control circuit is connected with car direct current power supply; The radio-frequency (RF) receiving circuit of receiving unit is connected with address decoding circuitry, and address decoding circuitry is connected with buzzer phone and video decode circuit, and the video decode circuit is connected with the storage card and the read-out of store video picture.

The operational process of automobile wireless image anti-joyride device of the present utility model is: the sensor of radiating portion sends alerting signal when car door is illegally opened, alerting signal starts power supply behind amplifying circuit and power control circuit, the vision signal order that camera produces is launched with the radio frequency form after address code is inserted decoding circuit, modulation circuit, transmission circuit; The radio-frequency (RF) receiving circuit of receiving unit at first receives and demodulates address code signal, the promotion buzzer phone gives the alarm, this signal starts the video decode and the display circuit of receiving end simultaneously, the car owner can see field condition by read-out, and will the picture of the valuable help of solving a case be stored in the storage card.

Automobile wireless image anti-joyride device of the present utility model is owing to be provided with read-out, storage card at receiving unit, so when the stolen situation of automobile takes place, not only give the alarm by vehicle body, the car owner also can receive warning immediately, and see the scene of a crime situation by read-out, simultaneously the picture to the valuable help of solving a case such as criminal's looks is stored, provide line of force rope for the police in time find and arrest criminal.Thereby alleviated the detection work amount of case greatly, thereby effectively improved case-solving rate, saved a large amount of police strength, material resources, criminal can be arrested early, stolen vehicle can be got back in owner of lost property's hand as early as possible.

The concrete structure of automobile wireless of the present utility model image anti-joyride device by the following drawings and

Embodiment provides in detail.

Fig. 1 is the radiating portion circuit block diagram of automobile wireless image anti-joyride device;

Fig. 2 is the receiving unit circuit block diagram of automobile wireless image anti-joyride device;

Fig. 3 and Fig. 4 are the circuit diagrams of automobile wireless image anti-joyride device radiating portion shown in Figure 1;

Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are the circuit diagrams of automobile wireless image anti-joyride device receiving unit shown in Figure 2.

Embodiment: can see from Fig. 1, the radiating portion of automobile wireless image anti-joyride device is by the camera 1 of capture video signal, the transmitting terminal address code is inserted decoding circuit 2, modulation circuit 3, transmission circuit 4, be used to predict stolen sensor and transducing signal amplifying circuit 5, and power control circuit 6 is formed, the annexation of each circuit is: camera 1 is inserted decoding circuit 2 with the transmitting terminal address code simultaneously and is connected with modulation circuit 3, modulation circuit 3 is connected with transmission circuit 4, transducing signal amplifying circuit 5 is connected with power control circuit 6, and power control circuit 6 is connected with car direct current power supply.Deliver to power control circuit 6 after sensor and transducing signal amplifying circuit 5 amplify the signal that obtains and start power supply, camera 1 is started working, camera 1 is inserted the vision signal that captures decoding circuit 2, is transferred to rf carrier by modulation circuit 3 through the transmitting terminal address code, by transmission circuit 4 emissions.

From Fig. 2 as seen, the receiving unit of automobile wireless image anti-joyride device is made up of storage card 10, buzzer phone 11 and the address decoding circuitry 12 of radio-frequency (RF) receiving circuit 7, video decode circuit 8, read-out 9, store video picture, described each circuit with annexation is: radio-frequency (RF) receiving circuit 7 is connected with address decoding circuitry 12, address decoding circuitry 12 is connected with buzzer phone 11 and video decode circuit 8, and video decode circuit 8 is connected with the storage card 10 and the read-out 9 of store video picture.After radio-frequency (RF) receiving circuit 7 receives radiofrequency signal, send into demodulator circuit, address code signal through demodulation promotes buzzer phone 11 warnings, and the vision signal one tunnel after the demodulation enters video decode circuit 8 output R, G, the B signal promotes read-out 9, and another road is to the storage card 10 of store video picture.The car owner can be stored in the picture on the read-out 9 in the storage card 10 at any time.

The radiating portion of the following automobile wireless image anti-joyride device that specifies present embodiment with reference to circuit diagram and the structure of receiving unit are formed and function separately.

Referring to Fig. 3 and Fig. 4, the sensor control power supply of radiating portion constitutes by being used to predict stolen sensor and transducing signal amplifying circuit 5 and power control circuit 6, and the slotting sign indicating number of address code is inserted decoding circuit 2 with the video modulation emission by modulation circuit 3, transmission circuit 4, camera 1, transmitting terminal address code and constituted.

Sensor control power supply: emission warning pulse after the stolen information of sensor senses, pulse clock as d type flip flop after amplifying circuit amplifies is imported, the d type flip flop clock end triggers to latch and is output as high level, makes aerotron become the conducting state energized by off condition.

Address code is inserted sign indicating number and video modulation emission: behind the power connection, CCD camera 1 outputting standard composite video signal is inserted the input of decoding circuit 2 as address code.Address code insert decoding circuit 2 by synchronizing separator circuit, select horizontal pulse to produce circuit, communication interface circuit, insert decoding circuit, compositions such as automatic reset circuit, microcontroller circuit, mainly finish with address information being inserted into the 7th row-Di 19 of TV Field blanking interval capable in.This device adopts LM1881 to separate composite synchronizing signal with monostable circuit 74LS221 from composite video signal, adopts 74L123 generation field blanking signal (VB) control generation to select the counting of putting number and row synchronous (HS) of the GAL device of horizontal pulse.The effect of selecting horizontal pulse to produce circuit is when working as a certain predefined blank lines of TV signal vertical blanking period and arriving, and produces an interrupt signal to microprocessor, and its width is delegation (64us).Selecting horizontal pulse to produce circuit is finished by GAL20V8.Address code insert sign indicating number by address code generator, insert the row coder, TV channel three parts are formed, data exchange between the three, the time continuous control by the communication interface circuit realization, communication interface circuit is made up of 74LS244 and MAX232E.The function of inserting decoding circuit is that the address code data message that serial port of single chip computer is exported is inserted in a few row of TV Field black-out intervals, and what this device took is the 7th row-Di 19 row.Inserting decoding circuit is realized by aerotron 3CK2B.Automatic reset circuit is at situation about crashing as if appearance and design-calculated, and its exportable high level resets micro controller system.Two 74LS123 of automatic reset electro route finish.The heart of inserting the row coder is a microprocessor, and that this device adopts is 89C51.The composite video signal of camera 1 output after address code is inserted decoding circuit 2 as the input of modulation circuit.The principle of modulation circuit 3 is that the composite video signal of will insert behind the sign indicating number forms the amplitude modulation radio television signal through balanced amplitude modulation device and filter network, imports transmission circuit 4 then and outputs on the emitting antenna after through preposition amplification in Class A and Class C power gain.

Referring to Fig. 5: the radio-frequency (RF) receiving circuit 7 of receiving unit mainly by tuner and in put two modules of plate and form.The radiofrequency signal that antenna receives enters tuner, and output intermediate-freuqncy signal IF is put plate module IF signal input part 1 pin in being exported to by 8 pin after tuner amplification, mixing.Middle amplification module AFT, AGC control end link to each other with tuner corresponding signal mouth, by 6 pin, 11 pin difference outputting video signal VIDEO and the sound signal AUDIO video and audio signal input end to video decode circuit 8.

Referring to Fig. 6: address decoding circuitry 12 mainly is made up of synchronous extraction circuit, selection circuit, data extraction circuit, several parts of microcontroller circuit.Its working process is: the video signal VIDEO that the receiver demodulation is come out is delivered to 2 pin of Sync Separator Chip LM1881 through aerotron Q101, the 3 pin output field synchronizing signal VS of LM1881, produce the preset signal of field blanking signal VB as GAL20V8 through monostable circuit 74LS221,1 pin of LM1881 output composite synchronizing signal CSYN produces line synchronising signal HS through another monostable circuit and delivers to the pin of GAL20V8 as control signal simultaneously.Adjust the pulsewidth of VB, it is capable to require its width to cover field flyback 15-25.Selection circuit only produces one at the 7th row place and selects horizontal pulse like this, thereby guarantees that data accurately receive.Selection circuit is finished by GAL20V8, it is to be produced by field blanking signal VB and line synchronising signal HS control GAL20V8 to select horizontal pulse, the effect of this circuit is when a certain predefined blank lines of TV signal vertical blanking period arrives, produce an interrupt signal and give microprocessor, its width is delegation (64us).The radical function of data extraction circuit is that the data signal extraction that is inserted in vertical blanking period is come out.For the reliable extraction that guarantees data adopts simulant electronic switch 4053 TV signal is intercepted out.Penetrating grade purpose of follower Q201 is for better isolation, and 4053 input end is delivered in its output, by the break-make of field blanking signal VB master cock.4053 A, B, C are control end, and A meets VB, and B, C connect row shielding pulse synchronously, guarantee that vision signal can enter the back level by multiple way switch at field blanking interval, and end the vision signal impassabitity at switch At All Other Times.The peak-detector circuit and the valley detecting circuit that in data extraction circuit, adopt IC203 and IC204 (LM311) to form, with behind the video rectification as the datum of comparator, guaranteed the reliable extraction of data.The detection principle is: D201 disconnects with output 7 pin of IC203 when row arrives synchronously, and D202 and R214 disconnection keep C203, C204, the last voltage of R206 constant substantially substantially.All the other time circuits are connected, and the comparative level on 2 pin of IC205 is the aviation value of peak detection and valley detection.Signal extraction is to adopt LM311 (IC205) to realize.LM311 is a hysteresis comparator, and relatively postponing is 300ns, can eliminate the shake in the switching process.The microprocessor of decoding circuit adopts the 89C51 identical with coder, and its function is mainly finished the reading in of address code data, output and address and stored.12 pin that select horizontal pulse to deliver to 89C51 of being elected to the generation of row circuit produce when interrupting, and the data that it is about to comparator IC205 the 7th pin are read in the micro controller system, at first addressing information are separated and are confused and compare with this machine address, then start subsequent conditioning circuit work if conform to.

Referring to Fig. 7: video decode circuit 8 is finished by the colour decoding integrated package CXA1621S and the power amplifier integrate circuit TDA2822M of special use, and its effect is that vision signal is converted to sound signal with three primary colours, synchronizing signal and the promotion buzzer phone of LCD LCDs coupling.Vision signal is from the V-IN port input of circuit, by connecing the 27th pin of IC1 (CXA1621S) behind luminance threshold and the contrast ratio potential device W4; From the 16th, 17, the 18 pin output of IC1, synchronizing signal is exported from the 2nd pin of IC1 respectively for R (P1), G (P2), B (P3) tristimulus signals, short circuit K1, K2, and field synchronization VS is exported by CN2-1, and the synchronous HS of row is exported by CN2-2.W5, W3, W6 are respectively colourity, frequency correction and colour pase regulator potentiometer.Sound signal is held input from R, L, and 6,7 pin through W1, W2 enter power amplifier integrate circuit IC2 by CN3 output, directly promote buzzer phone 11.

Referring to Fig. 8: picture storage card 10 is made up of mould/number conversion circuit, address production electric circuit, memory circuit and interface circuit, its principle of work such as Fig. 8: row, field sync signal HS, VS that video decode circuit 8 produces provide timing information and control information for mould/transformation of variables, address production electric circuit.Mould/number conversion circuit TLC5510 converts the vision signal of simulation to digital signal, so that the storage of data.Video signal VIDEO by the output of receiver demodulator circuit is entered by TLC5510 input end of analog signal AIN, under the device clock control analog video signal is converted to digital signal, is exported by data output end D1-D8.Sampling clock is 10MHz, and (about 64 μ s) adopt 512 picture elements to every capable TV signal, and each picture element 8bit quantizes, television image sampling 256 row.Digital signal after the conversion writes non-volatile memory chips W M8128B by the address, and the address produces two counting machines being realized by EPLD and finishes, and the high address is started by field synchronization VS, and synchronous HS counts to get to row, sign sampling line number sequence number; Low order address is started by the synchronous HS of row, and Dot Clock is counted to get, and indicates the sampling point sequence number of every row.Data in the storage card 10 are imported computing machine by asynchronous communication chip TLC550 into by serial ports under Single-chip Controlling.The data bus D0-D7 of storage card 10 links to each other with the data bus D0-D7 of TLC550, and the data parallel in the storage card 10 enters TLC550, by the serial data mouth SOUT serial output of TLC550.The data of TLC550 and control signal pin link to each other with computing machine RS-232 interface respective pin, realize the communication of storage card 10 and computing machine.The data of importing computing machine into can be reappeared the picture of depositing through the software processing on read-out 9.

Claims (3)

1. automobile wireless image anti-joyride device, comprise: radiating portion and receiving unit, it is characterized in that: radiating portion has the camera (1) of a capture video signal, this camera (1) is inserted decoding circuit (2) with the transmitting terminal address code simultaneously and is connected with modulation circuit (3), modulation circuit (3) is connected with transmission circuit (4), transducing signal amplifying circuit (5) is connected with power control circuit (6), and power control circuit (6) is connected with car direct current power supply; The radio-frequency (RF) receiving circuit of receiving unit (7) is connected with address decoding circuitry (12), address decoding circuitry (12) is connected with buzzer phone (11) and video decode circuit (8), and video decode circuit (8) is connected with the storage card (10) and the read-out (9) of store video picture.

2. automobile wireless image anti-joyride device according to claim 1, it is characterized in that: the radio-frequency (RF) receiving circuit of receiving unit (7) is the full range radio-frequency (RF) receiving circuit.

3. automobile wireless image anti-joyride device according to claim 1 and 2, it is characterized in that: radiating portion is provided with the switch of removing alarm condition.

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