CN2238765Y

CN2238765Y - Monitor for preventing run-into when vehicle backing-up

Info

Publication number: CN2238765Y
Application number: CN 95219098
Authority: CN
Inventors: 兰天
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-18
Filing date: 1995-08-18
Publication date: 1996-10-30
Anticipated expiration: 2005-08-18

Abstract

The utility model relates to a monitor for preventing run-into when vehicle backing-up which is composed of a power supply, a CCD lens, an image sensor, a signal control circuit, and a TV display. The signal control circuit is composed of a transfer switch circuit, a functional conversion circuit, and a sampling clamp circuit. The transfer switch circuit and the sampling clamp circuit are connected to the functional conversion circuit. The functional conversion circuit is communicated with the image sensor and the TV display. The monitor has the advantages of simple and reasonable structure, favorable anti-shock performance, and long service life. The accident of the collision when the vehicle backing-up can be effectively avoided, and the utility model can be used for a monitor instrument of the situation at the back of the vehicle.

Description

The crashproof monitoring device of reversing automobile

The utility model relates to the crashproof monitoring device of a kind of reversing automobile, belongs to a kind of photovoltaic, can solve the automotive rear-view blind zone problem effectively.

In numerous prior aries, for this technical field of the crashproof monitoring device of reversing automobile, many patent applications have appearred, scenery after mostly adopting optic principle of reflection with automobile reflexes to operator's compartment, the major defect of this scheme is a complex structure, and the optical system automobile that is unsuitable for moving and jolts; Chinese patent 93228130 discloses a kind of reversing automobile monitoring device, it is by camera lens, camera, television monitor is formed, comprise that also one makes monitoring device be operated in the automatic switching control equipment that receives tv state or Monitor for reverse state, this device is connected with the reversing automobile switch, and the subject matter that this patented technology exists is:

1. to being in the monitoring device latch-up-free that receives tv state, the driver may simultaneously drive simultaneously to see and bring great accident potential to safety traffic by TV;

2. the monitoring device situation after reversing the time just can show car only can not be given full play to the effect that it monitors situation behind car;

3. adopt camera as imageing sensor,, cause damage easily, comprise glass tube with vacuum for being installed to this situation consideration deficiency on the vehicle, filament, the damage of deflecting yoke, the life-span is also short;

4. the monitoring range to state behind the car is little;

The purpose of this utility model is to overcome the deficiencies in the prior art and provides a kind of simple and reasonable for structure, and easy to use, multiple functional, cost is low, the crashproof monitoring device of the reversing automobile of long service life.

The crashproof monitoring device of reversing automobile of the present utility model, by power supply, the CCD camera lens, imageing sensor, signal control circuit, television indicator is formed, the CCD camera lens is installed on the rear portion of vehicle, television indicator is satisfied with in the operator's compartment, base is characterised in that: above-mentioned CCD camera lens is connected with solid state image sensor, and signal control circuit is by conversion switch circuit, and function conversion circuit and sampling clamping circuit are formed, conversion switch circuit and sampling clamping circuit are connected to function conversion circuit, function conversion circuit connected graph image-position sensor and television indicator.

The crashproof monitoring device of reversing automobile of the present utility model, simple and reasonable for structure, the situation that can effectively observe vehicle rear, the accident rate that cause the blind area when reducing reversing is greatly also provided convenience to state behind the observation of the vehicle in the advancing car, is suitable for hurdle, special vehicle such as police car and cash transit carrier owing to adopt solid CCD camera lens, is not only installed hidden convenience, and shockproof properties is good, make the life of acting long, particularly cooperate and go up Doppler's sonic sensor, safety factor is higher, use more conveniently, purposes is more extensive.

For introducing the crashproof monitoring device of reversing automobile of the present utility model in detail, be elaborated below in conjunction with accompanying drawing:

Fig. 1 is the circuit theory scheme drawing of the crashproof monitoring device of reversing automobile of the present utility model;

Fig. 2 is the principle of work scheme circuit of CCD camera lens and imageing sensor;

Fig. 3 is the circuit diagram of the crashproof monitoring device of reversing automobile of the present utility model;

Fig. 4 is the schematic circuit diagram that have the crashproof monitoring device of Doppler's sonic sensor;

Fig. 5 is that main reflection connects Doppler's sonic sensor, drives the scheme circuit of the concrete control circuit of steer motor.

Referring to Fig. 1, the crashproof monitoring device of reversing automobile of the present utility model, by power supply 1, CCD camera lens 2, image passes device 3, signal control circuit 4, television indicator 5 is formed, and power supply 1 is provided by storage battery in the automobile, mostly be 12V, CCD camera lens 2 is installed on the rear portion of vehicle in use, and television indicator 5 is satisfied with in the operator's compartment, and wherein said CCD camera lens 2 is connected with solid state image sensor 3, signal control circuit 4 is by conversion switch circuit 41, function conversion circuit 42 and sampling clamping circuit 43 are formed, and conversion switch circuit 41 and sampling clamping circuit 43 are connected to function conversion circuit 42, function conversion circuit 42 connected graph image-position sensors 3 and television indicator 5.

The CCD camera lens 2 of present comparative maturity and the circuit of imageing sensor 3 are disclosed among Fig. 2, CCD is the abbreviation of English Charge C0up Led Device (charge-coupled device), it is in the sense of solid sensing chip black and white (colour) the pixel sensing unit that resembled on the window surface cloth, when ambient light bundle of lines projects is to the induction window, these pixel sensing units just detect black and white (colour) image of throwing into above it, the output analog picture signal.By peripheral circuit it is advanced opto-electronic conversion again, synchro control, level translation and video amplification etc. becomes corresponding video signals and is sent to television indicator.

Its principle of work is: A shakes and raises device and B and shake and raise device and produce major clock and starting clock respectively, and offer synchronous circuit and produce three kinds of control signal SH (cranking signal), RS (reset signal), φ 1, φ 2 (transmission two phase clock).These signals are added to 4,9,11,14 of CCD respectively after driver stage is made level conversion, 21 pin make the CCD normal operation.

The optical signal that is sensed by CCD is after opto-electronic conversion, and again through level translation, it is vision signal about 1V by the amplifier out-put dynamic range that video amplifies the back by the output of 1 pin.

Referring to Fig. 3, conversion switch circuit 41, function conversion circuit 42 and sampling clamping circuit 43 have constituted signal control circuit jointly, and wherein conversion switch circuit 41 and sampling clamping circuit 43 are connected to function conversion circuit 42; Function conversion circuit 42 is integrated simulation switch circuit, and referring to circuit among the figure, it adopts existing simulation switch circuit U1, as CD0501B; Conversion switch circuit 41 is to be connected with aerotron BG1, diode D1 and a touch switch 0 by the integrated package NE555 that has bistable circuit now to form, and its junction circuit does not elaborate at this for existing general circuit; The output pin 3 of bistable circuit integrated package NE555 joins with each control end of simulation switch circuit U1.Below by the introduction of its principle of work, specifically disclose the circuit connecting relation and the corresponding effect of its each several part;

Its principle of work is: open automobile power source, connect system switching K, integrated analog switch circuit U 1 and vdd terminal that automobile storage battery voltage (power supply 1) is added to as function conversion circuit 42 make entire circuit work.

U1 is not when receiving other control signal, and each switch all is in initial condition, and 15 pin are supplied with CCD with the 12V voltage of 16 pin makes imageing sensor work send vision signal.3,4 pin, 19,20 pin make the line scanning of monitoring device 5 oppositely export to horizontal deflection coil, the back view picture and the vehicle right and left back mirror homophase that allow telltale show; 11,12 pin are added to looking of vision receiver with the output of the video of CCD and put level; 7,8 pin are turned off audiofrequency output with the volume potentiometer ground connection of vision receiver, and label and corresponding components are enumerated as follows in the drawings:

Line scan coil 61, vertical sweep coil 62, volume potentiometer 63,

In put chip 64, AC generator for vehicle 65, automotive battery 66.

Stop and have a rest in the time of to watch telecast, as long as touch soft-touch control 0 as conversion switch circuit, the human-induced signal just is added to the ground level of BG1, make its conducting, collecting electrode output transfers low level to by high level, the NE555 that constitutes bistable circuit exports each control end that high level add to simulation switch circuit U1 by output pin 3, makes each switch motion, and vision receiver is by source state received television program.15 pin of the switch circuit of simulation simultaneously U1 are unsettled, and CCD loses 12V voltage and shuts down automatically.

For guaranteeing traffic safety, to stop to watch electricity to see program in the navigating mate parking, clamping circuit is made of aerotron BG2, and the collecting electrode of aerotron BG2 links to each other with the reset terminal RS of simulation switch circuit U1; When 65 runnings of automobile alternator, the voltage of alternating current generator 65 outputs is added to the ground level of aerotron BG2 through diode D2, make aerotron BG2 conducting, collecting electrode transfers low level to by high level, be added to the reset terminal RS of simulation switch circuit U1, force simulation switch circuit U1 to get back to initial condition, total system can only be made backsight and use.

Referring to Figure 4 and 5, for strengthening the effect of backsight supervisory system more, CCD camera lens 2 is connected with two range finders 72 by steer motor on it 73 and control circuit 71; Range finder is contained on two arms of angle in rear portion of automobile; This range finder 72 comprises and is used to launch the supersonic Doppler ultrasonic probe, receive amplify, Doppler amplifies, two pulse detects, CCD turns to driving circuit and audible and visual alarm display circuit; Control circuit 71 wherein and probe 72 ' signal communication, steer motor 73 and audible and visual alarm display circuit 74 on the control circuit 71 driven CCD camera lenses, provide its scheme circuit among Fig. 5 in detail, ultrasonic emitting part wherein connects into a unstable state multi-resonant oscillating circuit by the IC1555 time base circuit, adjust potential device RV2, make its oscillation frequency at 40KHZ, by sonac T40-16 to spatial emission.R40-16 changes space 40KHZ super sonic into the 40KHZ pulse voltage by BG1, and BG2 carries out prime and amplifies.When the accessible object of space exploration, what prime was amplified is stable 40KHZ signal, if the object of relative motion has appearred in space exploration, the super sonic that is then reflected in this mobile can be offset by occurrence frequency, and this phenomenon is Doppler effect.What this moment, prime was amplified is two formed beat frequencies of frequency, by D1, and the D2 detection, C6, beat signal is taken out in C7 filtering, and through BGx, BG4, BG5, ICz-a, z-b etc. carry out multistage amplification, for improving antijamming capability, put the wrong report that only causes because of factors such as accidental disturbances, ad hoc meter two pulse detects comparator circuit.One road beat signal directly amplifies the driving LED luminotron through ICz-c, the indication detected state, the two-stage delay monostable multivibrator circuit that is made of dual time-base ic ICZ is delivered on another road, exports one through time-delay, the level behind the broadening, this two paths of signals is given BG7 by D3 and D4, when having only this two paths of signals simultaneously for high level, BG7 just overturns, and promotes BG8 and drives the steer motor action, the CCD camera lens is rotated enlarge rear vision area in certain angle, think only angle orientation at chaufeur.Simultaneously, buzzer phone sends the sound and informs that chaufeur has obstacle, is the difference alarm, and the LED luminotron all can show to a beat frequency whenever, and buzzer phone is that output is just arranged when a succession of Doppler effect is arranged.

The utility model mainly has the following advantages:

1. adopt CCD solid wide angle picture sensor, compare with traditional pick-up tube, do not have Frangible glass tube with vacuum is arranged, do not have filament and deflection coil, so the life-span can be improved 10 times More than, and low in energy consumption, volume is little, is not subjected to the interference of external magnetic field and affects all solids Change, shockproof properties is strong, especially is fit to be installed on the automobile that often jolts, and has red Outer luminous tube, can night unglazed according to the time use.

2. adopt the integrated electronic switch circuit, when making backsight and using with two groups of electronic switches Horizontal deflection coil is oppositely exported in line scanning, need not be inverted camera and can realize Backsight shows and left and right sides side mirror homophase, utilizes simultaneously one group of electronic switch to cut off Volume, absence of audio noise jamming when making backsight.

3. by the conversion of soft-touch control control function, received television signal is simultaneously by one group of electricity Sub-switch turn-offs the power supply of ccd sensor, and the CCD camera lens is quit work.

4. the electric signal that extracts automobile current generator removes to switch by force electronic switch by clamping circuit, stops to watch in the driver drives vehicle TV.

5. by the obstacle after the doppler ultrasound wave sensor probe vehicles or the distance of trailing automobile, remind the visual angle of chaufeur and automatic or manual control CCD probe to adapt to demand to local backsight by sound and light alarm.

Like this, this product can be applicable to any vehicle, is specially adapted to the large box type lorry, passenger vehicle, mine dumping car and police car, hurdle, cash transit carrier, special vehiclees such as limousine.

Claims

1, the crashproof monitoring device of a kind of reversing automobile, by power supply, the CCD camera lens, imageing sensor, signal control circuit, television indicator is formed, it is characterized in that: above-mentioned CCD camera lens is connected with solid state image sensor, and signal control circuit is by conversion switch circuit, and function conversion circuit and sampling clamping circuit are formed, conversion switch circuit and sampling clamping circuit are connected to function conversion circuit, function conversion circuit connected graph image-position sensor and television indicator.

2, the crashproof monitoring device of reversing automobile according to claim 1, its feature is the integrated analog switch circuit in above-mentioned function conversion circuit; Conversion switch circuit is to be connected with aerotron BG1, diode D1 and a touch switch 0 by existing bistable circuit integrated package NE555 to form; The output pin 3 of bistable circuit integrated package NE555 joins with each control end of simulation switch circuit; Clamping circuit is made of aerotron BG2, and the collecting electrode of aerotron BG2 links to each other with the reset terminal RS of simulation switch circuit U1.

3, the crashproof monitoring device of reversing automobile according to claim 1 and 2 is characterized in that above-mentioned CCD camera lens is connected with two range finders by steer motor on it and control circuit; Control circuit is communicated with steer motor on the control circuit driven CCD camera lens and audible and visual alarm display circuit with the probe letter.