CN1108765A - Rear-view device for automobile - Google Patents
Rear-view device for automobile Download PDFInfo
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- CN1108765A CN1108765A CN 93118433 CN93118433A CN1108765A CN 1108765 A CN1108765 A CN 1108765A CN 93118433 CN93118433 CN 93118433 CN 93118433 A CN93118433 A CN 93118433A CN 1108765 A CN1108765 A CN 1108765A
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Abstract
The automobile rear-view instrument is an anti-collision distance measuring device. It adopts electronic CCD imaging technology, supersonic technology, microprocessing technologyand infrared technology (night vision functional board) to detect the object at the back (or in front) of the automobile within a definite distance. It sends TV image display, digital distance display, and sound-flash alarm to the driver to make automobile possess of rear view function.
Description
Object after rear-view device for automobile application radar range finding and the solid photographic device probe vehicles in the certain distance, image, object distance information after the driver shows car, and send the sound, flashing light alarm indication.Make automobile have " backsight " function, it is applicable to various motor vehicles, and particularly not good truck, container car, various engineering special-purpose vehicle and the motorbus etc. of backsight bar body are the requisite safety features of automobile.
One. product structure:
This product mainly is made up of main frame and viameter two major parts.
Main frame: comprise data handling system, the TV screen image shows and LED charactron distance display, and the sound (loudspeaker), (LED luminotron) warning system of glistening.Mainframe is installed in above the indoor panel board of car steering.
Viameter: comprise in three probe cassettes of packing into such as solid-state image pickup system, ultrasound emission and receiving trap, infrared night vision plate, be installed in respectively below the automobile tail bumper.During this device start work, will behind car, form sector display (exploration) zone of certain distance.
Two. technical indicator:
1. camera lens: auto iris wide-angle lens
2. separate degree of elephant: 380 lines
3. minimal illumination: OLUX
4. TV screen: 4.5 inches black and white kinescopes
5. power supply: DC 12V 1A(gasoline car)
DC 24V 1A(diesel vehicle)
6. power: 13W
7. operating ambient temperature :-20 ℃-50 ℃
8. working environment humidity :≤90 ℃ (40 ℃ time)
9. distance display: image demonstration＞20M
The digital 0-7M that shows
10. report to the police and indicate:
| Alarm distance (rice) | 2--1.4 | 1.4--0.8 | 0.8--0 |
| Pilot lamp | The green light flash of light | The amber light flash of light | The red light flash of light |
| The sound | Pout ... pout | Clatter ... clatter | Tick ... tick |
| Frequency (HZ) | 440--540 | 840--1000 | 1400--1600 |
11. size: main frame: * 160(W 140(H) * 180(L))
Viameter: * 60(W 50(H) * 190(L))
12. weight: 3KG
Three. principle of work:
Please refer to Figure of description 1 block scheme.
Light image imaging on the CCD imaging plate through optics low-pass filter and infrared ray excision color filter by camera lens (LENS) is injected after the image of formation is made light-to-current inversion, is transported to the CCD output stage by driving pulse.The output signal of CCD is through the demultiplexing circuit of microprocessor, with signal (data) maintenance of taking a sample.And after information-processing circuit is handled, form necessary various signals, be distributed to each control circuit.The wherein main vision signal that forms is transported to video amplifier circuit, and the video image signal that obtains is enough to make the full width of cloth of teletron to modulate needed amplitude.Be transported on the teletron through video output stage.
By the vision signal that video amplifier input end takes out, be transported to synchronizing separator circuit and look separation trip, field boundary synchronizing signal the signal entirely from video.And after amplifying, synchronizing signal divide two-way to export.One passing point circuit is removed capable composition, is transported to the field boundary sweep circuit as the field boundary trigger pip, has good linear with formation, and the sawtooth current of enough amplitudes is transported to the field boundary deflection coil; Frequency or phase place levelling are carried out through the AFC phase detector in another road, and relatively the voltage of back formation removes the impulse disturbances influence through integrating circuit, the line of input sweep circuit, and formation has favorable linearity, and the sawtooth current of enough amplitudes is transported to deflection coil.Simultaneously, through line output transformer, high pressure, middle voltage rectifier are supplied with the teletron anode, and the high pressure intensifying ring is pressed in the focusing electrode.And the required voltage of video output stage.
Range measurement system: transmitting oscillator is a multistable circuit that works in 40KC.It is controlled by the output of a set/reset bistable trigger circuit, by tuned circuit frequency of operation is transferred to optimum range (corresponding with the emitting head frequency response)." set " input of bistable circuit is produced by a low-frequency pulse producer.During set, bistable circuit is exported a gate signal (short pulse), and control generator sends a series of output pulses, and counting circuit and N pulse (progression N gives first setting), just makes bistable circuit reset to the output step-by-step counting when starting working.So, during transmitter work, it is N output of every string pulses that several strings are just arranged p.s., and counter circuit just sends a reset pulse after a string signal.
Receiver is receiving echoed signal, and through three-stage amplifier, input frequency selection circuit (ceramic filter) divides to detect echoed signal from noise signal.After the frequency selection circuit is the Shi Mite trigger circuit, and it can send the output signal with logical consistency, and signal conveys is to counting circuit, and it will send a reset pulse after the one group of several pulse that receives from transmitter.
For two reset pulses that transmitter counting circuit and receiver counting circuit are produced are converted to desired single output pulse, set/reset trigger circuit have just been designed, its is by from the pulse set of transmitter, and again by the pulsed reset from receiver.
The transmitter counting circuit provides a reset pulse to measuring logical circuit, and receiver counting circuit after the pulse of receiving similar number also provides signal pulse to measuring logical circuit, and two conversion of signals become one output pulse, its time equals the time that two signals are separated by.With the gate pulse of its output pulse as distance discrimination circuit count device, command range display circuit.Be transported to the LED charactron with range of a signal.
Equally, output voltage is transported to the warning judging circuit, carries out stepping and report to the police, by the LED luminotron flashing light alarm of red, yellow, green three kinds of colors; Equally, output voltage is added to warning judging circuit trigger, triggers audio oscillator circuit, carry out audible alarm.
Four. situation, feature and function
1. situation:
As everyone knows, traffic safety problem is a global big problem, and there are 500,000 people in the whole world because of traffic hazard dead every year approximately, and per 6 traffic hazards of China just have people's death.Especially in recent years, China's automobile quantity growth was very fast, and road safety facility and management all do not catch up with, and traffic safety problem is just more more outstanding.
Traffic hazard is from the technical elements analysis, and accident produces by three kinds of Fundamentals decisions: the one, and automobile and object distance, the 2nd, automobile relative velocity, the 3rd, the reflection time of person machine system in incident.Because residing ambient condition is very complicated, fast changing in the vehicle traveling process, but all to continuously receive various information inside and outside the automobile by the driver, judge at any time and finish exercises.And the driver has limited his broad view in pilothouse, other vehicles almost can't backsight (the sided mirror unit scope is very little) except that car, this just directly has influence on the driver, timely discovery situation, and in the exactly traffic hazard Fundamentals reflection time be to cause motor-vehicle accident the most complicated, the factor that the accounting example is the highest, one of design of Here it is invention rear-view device for automobile.
Secondly, make a general survey of the present situation of domestic and international solution automotive safety.Domestic research to the automobile electromechanical integrated product is at the early-stage, there is not substantial technological breakthrough, boffo " reversing ... please note " language chip, powerless, can only increase the city noise public hazards, and abroad some companies and research department have successively developed multiple collision avoidance radar (as U.S. La Xide company, Ka, X and the Cm wave band of developments such as West Germany Daimler Ben Ci company and car radar security system incorporated company are made radar and Japanese Nissan Motor pulse-doppler radar entirely), all facilitation has been played in the development of auto-safety mechanism.But, because complicated environment in the running car makes the range of application of these radar collision systems of external current development be subjected to certain restriction.In addition, problems such as systemic-function reliability, economy make these devices fail to be widely used.
2. feature:
Rear-view device for automobile design of the present invention mainly is to emphasize human factor, performance driver's subjective dynamic role.Automobile still will be driven it by the people.This device is exactly the visual field that utilizes advanced electronics technology open for the driver creates, and finds the condition of situation, and the alarm driver is to strive for creating the time of dealing with problems.So, just can significantly reduce the generation of traffic hazard.
This apparatus system reliable in function is quick on the draw, and interference free performance is good, and easy maintenance and installation has been created good conditions for applying.
3. function:
1., in the vehicle traveling process,, find that target conditions submits to the driver to finish various preventions actions by the various image informations of TV screen after the driver provides car.
2., when tune reversing, show object and automobile distance (charactron shows, TV screen monitor), and inform the driver with the sound, flash of light form, make it in time to take measures, prevent the collision of vehicle and object.
3., during running car, after when vehicle cut-ins is arranged, this device is reported to the police.
4., have on the car people climb onto a slow-going train, when climbing car, this device is reported to the police.
5., when having large piece article to drop on the car, this device is reported to the police.
6., keep a safe distance between the vehicle, this car driver has initiative by system.
Five. using method:
1. after checking and verify the power supply of this device and automobile voltage conforming to, this device power lead one end is inserted the automobile cigarette lighter socket, an end inserts the supply socket of this device.
2. in the automobilism, the driver can open certain part machine (switch) work as required, generally opens the range finding switch, range display continuous working (current sinking 0.2A), when reporting to the police, open TV monitor work (current sinking 0.8A) complete observation, follow-up work again.
3. in utmost point cold environment, emitting head, reception head and camera lens surface are coated with ice, snow, frost, mud etc., remove clean.
4. when checking maintenance, emitting head, reception head and camera lens can be scrubbed the surface for water, but (this device all with the resin glue sealing, has water resistance) washed away in not handy high-pressure water tap front.
Six. points for attention:
1. this device can increase the parallel connection of several roads and transmit and receive device according to customer requirements, and result of use will be better, as the railway carriage upper right corner, a left side or headstock front.
2. this device can be according to customer requirements, increases the multi-direction monitoring of making a video recording of several roads.At this moment, only need increase the function of image segmentation plate, the TV screen picture can be divided into several, and each camera lens that is independent of each other monitors effect.
3. this device design has television line, according to customer requirement install tuner, in put and sound channel.So, rating television image (making used as television) during driver's rest, but forbid in the process of moving to use.
This device fundamental purpose is to make great efforts to solve the automotive safety problem.Therefore, this installs universal machine tv program (giving over to the room) is not installed, and this moment, TV screen was made monitor usefulness.
Seven, explanation
Below in conjunction with drawings and Examples type of the present invention is further specified
Accompanying drawing 1 is the electric functional-block diagram of type of the present invention
Accompanying drawing 2 is that the implementation system of type of the present invention is installed the connection synoptic diagram
Accompanying drawing 3 is viameter (probe cassette) scheme of installations of type of the present invention
Accompanying drawing 4 is automobile tail ultrasonic velocity space search target coverage scope synoptic diagram of the viameter (probe cassette) of type of the present invention
In the accompanying drawing 2: 1) automobile storage battery 2) the rear-view device for automobile main frame, it is installed in above the automobile instrument panel, the driver dead ahead, the power lead of main frame inserts automobile cigarette lighter socket (if no cigar lighter can insert the automobile storage battery output terminal), can power.3) viameter comprises emission, reception, camera lens.Two kinds of project organizations of type of the present invention: first kind is that two range finding boxes are installed on the left and right both sides of automobile tail respectively, in emitting head be housed in one, receive head and CCD camera lens, dress only transmits and receives head in another.Second kind is three range finding boxes, and wherein two all are equipped with respectively and transmit and receive head, and are installed on the left and right both sides of automobile tail.And another is equipped with CCD camera lens and far infrared transmitter, be installed on automobile tail placed in the middle between.4), cable, adopt double shield five-core cable line, along automotive frame (chassis) the pilothouse main frame is connected assurance signal path and interference free performance with tailstock portion viameter.
In the accompanying drawing 3, range finding box installation dimension will be determined it through debugging according to vehicle.Among the figure, nominal size is definite according to homemade east wind car.Size A is decided by whether the car body tailstock blocks the detection wave beam, and size B is decided by the degree of reflection of the earth to echo.
In the accompanying drawing 4, the ultrasonic beam coverage of viameter, according to homemade east wind car back (by accompanying drawing 3 nominal sizes) being installed, to have formed M(in tailstock portion wide) * 7M(is long) coverage.
Claims (3)
1, a kind of collision prevention of vehicle distance measuring equipment-rear-view device for automobile that is used for the transport solution safety problem.Form by main frame and viameter two parts.It is characterized in that studying the outstanding problem of traffic safety, people (driver)--the effect of machine (automobile) system in the traffic safety incident, and obtain the inventive concept of this device.
2, have according to the described advanced electronics technology of claim:
1) solid CCD camera technique: utilize the CCD solid-state components take the photograph information through space samples, form signal through little processing outputting video signal, in order to guarantee the preferable image quality, we select the CA-100C type of MAT for use, adopt circle wide-angle lens with an automatic light meter to save the The Cloud Terrace scanning mechanism.
2) ultrasonic technique: utilize piezoceramic transducer, the spike train that oscillator at the corresponding levels is sent is converted to ultrasound wave, carry out space exploration, when finding target, echo is converted to spike train again by receiving head, pass through receiving equipment and select to detect reflected signal, pass through the distance required time, and calculate the distance of object by the logical process measuring-signal.Utilize the full system radar installations transmitting and receiving apparatus of ultrasonic technique simple, practical.
3) infrared technique: utilizing infrared technique mainly is at pitch-dark night, gives CCD solid-state image pickup camera lens, and infrared light supply is provided, and obtains image information (target) in the infrared light illumination range, makes rear-view device for automobile have night vision function.
4) display technique: utilize TV screen to make the driver observe vehicle back space situation intuitively, utilize numeral to show that (LED charactron) makes the driver accurately know the actual range of display screen object observing.
5) image Segmentation Technology: utilizing the image segmentation plate, make display terminal TV screen a tractor serves several purposes, solved the shared TV screen of multichannel CCD solid-state image pickup head, only is that picture is divided into several, observes simultaneously.Usually use 2 tunnel (before the car and behind the car) or 4 tunnel (car front, rear, left and right).
6) warning system: utilize the sound (loudspeaker), flash of light (LED luminotron) that the dangerous information alerting drivers of the generation traffic events in the vehicle operating is noted.Take effective treatment measures, export one tunnel information Control automobile emergency brake system simultaneously.
7) data handling system: information via one systematic logical circuit that utilizes data system that receiver is intercepted and captured, process, processing, computing, control the terminal device of this device respectively.
3, according to right technical requirement 1 described rear-view device for automobile, technical finesse on its structural design.Main machine structure is display terminal and all movement is structure-integrated with inserting rack.So, simple in structure, easy to installation and maintenance.Adopt 2 probe cassettes to be respectively charged into 11 receipts system on the viameter structure, and be installed on automobile rear bumper two respectively, other probe cassette pack into CCD pick-up lens and 2 tunnel emissions are installed in the middle of the bumper.Adopt 4 the tunnel to launch 2 tunnel receptions, to guarantee the hunting zone.Consider the severe environmental conditions of automobilism, taked damping, anti-interference, effective measures such as sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93118433 CN1108765A (en) | 1993-10-04 | 1993-10-04 | Rear-view device for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93118433 CN1108765A (en) | 1993-10-04 | 1993-10-04 | Rear-view device for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1108765A true CN1108765A (en) | 1995-09-20 |
Family
ID=4992468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93118433 Pending CN1108765A (en) | 1993-10-04 | 1993-10-04 | Rear-view device for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108765A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876707B (en) * | 2009-12-21 | 2012-05-23 | 曲常斌 | Millimeter wave/infrared composite detection radar |
| CN105823461A (en) * | 2016-04-05 | 2016-08-03 | 苏州佳像视讯科技有限公司 | Optical distance measuring camera |
| CN111064935A (en) * | 2019-12-30 | 2020-04-24 | 中祖建设安装工程有限公司 | Intelligent construction site personnel posture detection method and system |
-
1993
- 1993-10-04 CN CN 93118433 patent/CN1108765A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876707B (en) * | 2009-12-21 | 2012-05-23 | 曲常斌 | Millimeter wave/infrared composite detection radar |
| CN105823461A (en) * | 2016-04-05 | 2016-08-03 | 苏州佳像视讯科技有限公司 | Optical distance measuring camera |
| CN111064935A (en) * | 2019-12-30 | 2020-04-24 | 中祖建设安装工程有限公司 | Intelligent construction site personnel posture detection method and system |
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Addressee: Dou Shunchen Document name: Deemed as a notice of withdrawal |
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| WD01 | Invention patent application deemed withdrawn after publication |