CN2752788Y - Vehicle anticollision visual radar capable of automatic braking - Google Patents
Vehicle anticollision visual radar capable of automatic braking Download PDFInfo
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- CN2752788Y CN2752788Y CN 200320121484 CN200320121484U CN2752788Y CN 2752788 Y CN2752788 Y CN 2752788Y CN 200320121484 CN200320121484 CN 200320121484 CN 200320121484 U CN200320121484 U CN 200320121484U CN 2752788 Y CN2752788 Y CN 2752788Y
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Abstract
The utility model relates to an automobile anti-collision visual radar capable of automatic brake, which is improved on the basis of a circuit of the prior art and is characterized in that the automobile anti-collision visual radar capable of automatic brake also comprises a distance prearranged circuit, an air pressure electromagnetic switch and an amplification and drive circuit. The utility model also adopts a double-way power amplification circuit and a double-way preamplification circuit with filter waves. The back part of a carriage is provided with two groups of ultrasonic sensors T1, T2, REC1, REC2, which are respectively connected with the double-way power amplification circuit and the double-way preamplification circuit with filter waves for respectively completing the emission and the receiving of ultrasonic wave signals. The input terminal of the distance prearranged circuit is connected with the output terminal of an ultrasonic wave preregulator, and the input terminal of the distance prearranged circuit is also connected with a single chip machine and the signal output terminal of a pulse generating circuit. The output terminal of the distance prearranged circuit is orderly connected with the amplification and drive circuit and the air pressure electromagnetic switch for realizing the automatic brake or reminding a driver to pay attention to brake. When an automobile is reversed to a prearranged distance, an automatic alarm is implemented and automatic brake can be realized. Accuracy and safety for automobile reverse and parking are ensured.
Description
Technical field
The utility model relates to the visual radameter of a kind of automobile, and the self-stopping automobile collision preventing video radar of particularly a kind of energy is applicable to the reversing occasion of various motor vehicles.
Background technology
Along with modern high technology, the high speed development of hi-tech industry, the automobile cause in the world and Chinese the earth flourish, but frequent accidents takes place, and gives country, enterprise and individual bring enormous economic loss and personnel's injury.Safer in order to reach driving, someone had once developed the automobile collision preventing video radar, it can be when reversing automobile reaches certain distance sounding alert, even on TV with automobile rear panoramic picture and distance display so that the reference when being provided at reversing or parking for the driver.But blemish in an otherwise perfect thing is to face a danger in reversing when needing tight the parking, can only rely on hand-operated brake, can't in time carry out self-actuating brake.
The utility model content
The purpose of this utility model is to design the self-stopping automobile collision preventing video radar of a kind of energy, it not only can be with automobile rear panoramic picture and distance display on the TV in face of the pilothouse driver, can also be on the distance that sets in advance, energy is brakes system automatically, realize automobile brake in time automatically, guarantee that automobile, pedestrains safety and reversing park accurate safety.
The main technical schemes that realizes above-mentioned purpose is: referring to accompanying drawing, it still comprises DC-DC power circuit (1), ultrasound wave presetting circuit (2), power amplification circuit, pre-amplification circuit, LCD TV (7) as terminal device, infrared photography sensor (8), single-chip microcomputer and pulse generating circuit (9), vision signal synchronizing separator circuit (10), and video character overlap-add procedure circuit compositions such as (11), wherein the signal input part of ultrasound wave presetting circuit (2) is that output terminal with single-chip microcomputer and pulse generating circuit (9) joins, the signal output part that wherein is installed on the infrared photography sensor (8) at rear, compartment joins by the input end of vision signal synchronizing separator circuit (10) and video character overlap-add procedure circuit (11) and single-chip microcomputer and pulse generating circuit (9) successively, wherein the signal input part as the liquid crystal TV set (7) of terminal presentation facility is to join by the signal output part of video character overlap-add procedure circuit (11) with single-chip microcomputer and pulse generating circuit (9), it is characterized in that it comprises that also (having additional) is apart from prewired circuit (5), air pressure electromagnetic switch (12), amplification and driving circuit (6) are formed, used power amplification circuit is two-way power amplification circuit (3), used pre-amplification circuit is the pre-amplification circuit (4) of two-way band filtering, wherein the signal input part of the pulse signal output end of ultrasound wave presetting circuit (2) and two-way power amplification circuit (3) joins, in the automobile bodies rear design two groups of ultrasonic sensor T1 are installed, T2, REC1, REC2 joins with emission and the reception of finishing ultrasonic signal respectively with the pre-amplification circuit (4) of two-way power amplification circuit (3) and the filtering of two-way band respectively, the signal output part of the signal input part of its middle distance prewired circuit (5) and ultrasound wave preregulator (2) joins, input end apart from prewired circuit (5) also is connected with the signal output part of single-chip microcomputer with pulse generating circuit (9), output terminal apart from prewired circuit (5) is connected with amplification and the gentle piezoelectricity magnetic switch of driving circuit (6) (12) successively, realizes self-actuating brake or reminds the driver to note stop (brake) with air pressure with the output brake.
The utility model is set up apart from prewired circuit, air pressure electromagnetic switch, amplification and driving circuit, and use two groups of ultrasonic sensor T1, T2, REC1, REC2 (i.e. two groups of sending and receiving sensors) to finish the emission and the reception of ultrasonic signal respectively, calculate echo by single-chip microcomputer and determine that obstacle distance is (when the reversing automobile time of arrival, tv display screen upper left corner range of a signal data, range data can change synchronously with moving of object, reaction in time, object stops to move, and range data is steady display also).When reversing reaches preset distance, the alarm of sounding automatically, when reaching predetermined minimum distance, data are glimmered automatically, follow sound alarm.This moment, the driver should note stopping, or self-actuating brake.This radar equipment working environment is-10 ℃-55 ℃, and finding range can reach the zone of 5M.The camera visual range can reach 10 meters.
Description of drawings
Fig. 1: be circuit structure block scheme of the present utility model.
Fig. 2: be circuit theory diagrams of the present utility model.
Wherein: 1～DC-DC (24V/12V) power circuit, 2～ultrasound wave preregulator, 3～two-way power amplification circuit, 4～pre-amplification circuit, 5～apart from prewired circuit, 6～amplify and driving circuit, 7～as the LCD TV of terminal presentation facility, 8～microminiature infrared photography sensor, 9～(AT89C51) single-chip microcomputers and pulse generating circuit, 10～vision signal synchronizing separator circuit, 11～video character overlap-add procedure circuit, 12～air pressure electromagnetic switch.
Embodiment
Referring to accompanying drawing 1, Fig. 2 as can be known, in physical circuit of the present utility model, wherein:
In described two-way power amplification circuit (3), 3 pin and the triode N2 base stage of 40KHZ oscillator U6 are wherein joined, the base stage of triode N2 emitter and triode N3 is joined, triode N3 collector joins by resistance R 20, inductance L 3 and+12V power supply, and the N3 collector joins with the sensor T2 positive pole of doing emission usefulness by capacitor C12 again.In order to obtain enough big emissive power and finding range, adopt two probe emissions.Another road power amplifier triode N2 emitter joins through the base stage of R45 and triode N4, and the collector of triode N4 joins by resistance R 19, inductance L 4 and+12V power supply, and the collector of N4 joins by capacitor C 13 and the sensor T1 positive pole of doing emission usefulness again.
In the pre-amplification circuit (4) of described two-way band filter, 1 pin and the receiving sensor REC2 of amplifier U8 wherein join, and prime amplifier U8 output terminal 7 pin join by resistance XR2 and triode N13 base stage.1 pin and the receiving sensor REC1 of the prime amplifier U7 of another road band filter join, and 7 pin join by resistance XR1 and triode N12 base stage, and synthetic received pulse joins through 12 pin of C36 and ultrasound wave preregulator (2) integrated circuit U5.
Described apart from prewired circuit (5), 10 pin of the 4 foot meridian capacitor device C003 of integrated circuit U9 wherein and ultrasound wave preregulator (2) integrated circuit U5 join, the 10 foot meridian capacitor device C005 of U9 and 5 pin of integrated circuit U10 join, and 6 pin and the potentiometer RR3 of U10 join.
Described air pressure electromagnetic switch (12) and amplification and driving circuit (6), air pressure electromagnetic switch (12) wherein is the two-position three way structure.Its driving circuit: the base stage of triode N14 is joined through 4 pin of resistance R 005 with integrated package U10.The N14 emitter joins through diode DD1 and triode amplifier N15 base stage, the N15 emitter joins through R009 and triode N16 base stage, the N16 collector joins through resistance R 011 and triode N17 base stage, the N17 collector joins through resistance R 012 and triode N18 base stage, N18 collector and relay join, relay node A joins with+24V power supply, and relay C point and two-position three way air pressure electromagnetic switch PK winding join.When on preset distance (for example 1M), after receiving echoed signal, air pressure electromagnetic switch winding adds+24V voltage that valve just is opened, and auto exhaust reaches the brake purpose.Noticing in the design does not influence the former brake system of automobile, and strong interference immunity is feasible through experiment is installed, convenient maintenance.
In described (AT89C51) single-chip microcomputer and pulse generating circuit (9), 2,3,1 pin of U2 joins in 1,4,5 pin of single-chip microcomputer U1 wherein and the video character overlap-add procedure circuit (11), and 2,3 pin of U1 join with the emitter of triode N9, N8 respectively.Can finish the character stack of a certain position by instruction mode as CPU and order set that this terminal signaling is handled, realize that ranging data superposes with live image, the serial communication receives cpu instruction, reaches the purpose of demonstration.U3 wherein is a pulse generating circuit, joins from the 3 pin outputting standard rect.p.s of U3 and 14 pin of U1, and distance accuracy can obtain from the frequency of regulating the U3 pulse producer.
Described vision signal synchronizing separator circuit (10), one end of resistance R 30 wherein is to join with small-sized image pickup sensor video output terminals, the R30 other end joins through C16, C19 and triode N5 base stage, the collector of N5 joins by 17 pin of the integrated circuit U2 in R39, C20 and the video character overlap-add procedure circuit (11), another road of image sensor video output terminals joins by capacitor C 17 and the base stage of triode N15, joins from 24 pin of N15 emitter outputting video signal and U2.
Described video character overlap-add procedure circuit (11), 24 pin of integrated package U2 wherein and the emitter of triode N15 join, 17 pin of U2 are imported synchronizing signal separations from the collector of N5 through resistance R 39,11,12 pin of U2 join with the two ends of crystal resonator X1, and join by capacitor C 11, C23 and ground respectively, finishing the processing of ranging data, the base stage from the 21 pin outputting video signals of U2 to triode N6, the N6 emitter through capacitor C 34 outputting video signals to liquid crystal TV set.
Used integrated package U1, U2, U3, U4, U5, U6, U7, U8, U9, the U10 of the utility model is respectively AT89C51, UPD6564, NE555, NE555, CD4098, NE555, CX20106A, 4098,4081 etc., but also can replace with the integrated package of other models using.
Circuit working principle of the present utility model is as follows:
With reference to accompanying drawing 1, Fig. 2, DC/DC supply convertor of the present utility model: input direct voltage 15V-30V, be transformed into the 50KC square-wave voltage through oversampling circuit, through full-wave rectification, the filtering of π type, output+12V ,+5V voltage uses for integrated circuit.Characteristics: power supply is the DC/DC module, good stability, and ripple is little, the efficient height, volume is little.
Range measurement system: the ultrasound wave preregulator produces the positive pulse of certain pulse width, as a whole the synchronizing pulse of circuit.It produces the ripple door of certain pulse repetition rate again, and the duty of control power amplifiers makes fire pulse width reach required value.
The two-way power amplifier in order to satisfy the needs of motor bus, enlarges finding range, adopts the two-way radiating circuit.The 40KC square-wave voltage exports emission sensor T1, T2 respectively to through N3, the power amplification of N4 triode, is transformed into ultrasonic signal and forwards launches.
The ultrasonic signal that ultrasonic sensor is launched is when running into the automobile rear barrier, and for example the surface of people, wall then reflects.The two-way prime amplifier is set, and receiving sensor receives echoed signal respectively through U7, the filtering of U8 prime amplifier, amplification, and shaping outputs to single chip computer AT 89C51 ' and carries out data processing.In order to satisfy finding range, adopt the two-way reception technique.Fine through the entrucking experiment effect.
AT89C51 single-chip microcomputer and pulse generating circuit: the measured target distance is to determine according to the echo time back and forth.Ultrasound wave velocity of propagation in air is 331.45 meter per seconds, and available formula is calculated obstacle distance.
Miniature transducer: adopt 1/4 inch colored shooting induction light electric conversion means, figure prime number 510 (H) * 492 (V).Terminal display image and automobile rear obstructions chart look like should be same direction, so as the correct disturbance in judgement object space of driver to.
The vision signal synchronizing separator circuit: major function is to isolate synchronizing signal from the image sensor output signal.Synchronizing signal is delivered to the stack that video character overlap-add procedure circuit 6465 chips are finished image and range finding numeral.Signal after the stack is delivered on the terminal display.The used terminal display of the utility model is to adopt 5.5 " black and white or colour television sets or 5.6 ", 7, and " lcd tv shows the rear view picture and demonstrates nearest obstacle distance data in the display screen upper left corner on the television display screen.For example: " 3.10M ", make the driver very clear, very directly perceived, when seeing distance for 0.60M, sound alarm is followed in the data flicker, and this moment, the driver should brake immediately.Ought suitable distance (as 1M) be set during reversing, but self-actuating brake.
Apart from prewired circuit: the utility model can not only reflect rear view picture and range finding, data and chimes of doom and can self-actuating brake.The prevention driver is because the major traffic accidents that inadvertent causes.Alarm distance can pre-determine, and for example is provided with 1 meter, and when automobile was backwards to from 1 meter of people, electric circuit inspection went out the echoed signal at 1 meter, and this signal amplifies through triode N15, N16, N17 and N18 again through the DD1 diode rectification, drives relay J node C closure.At this moment accumulator+24V voltage is input on the winding of air pressure electromagnetic switch PK, connects automobile exhaust pipeline, and wheel is checked in the rapid exhaust of automobile, reaches the brake purpose.And when driving gas ducting unimpeded.Electromagnetic switch PK can be installed in automobile bottom, should adopt strong interference immunity, product stable and reliable for performance.
Claims (7)
1, the self-stopping automobile collision preventing video radar of a kind of energy, it comprises DC-DC power circuit (1), ultrasound wave presetting circuit (2), power amplification circuit, pre-amplification circuit, LCD TV (7) as terminal device, infrared photography sensor (8), single-chip microcomputer and pulse generating circuit (9), vision signal synchronizing separator circuit (10), and video character overlap-add procedure circuit compositions such as (11), wherein the signal input part of ultrasound wave presetting circuit (2) is that output terminal with single-chip microcomputer and pulse generating circuit (9) joins, the signal output part that wherein is installed on the infrared photography sensor (8) at rear, compartment joins by the input end of vision signal synchronizing separator circuit (10) and video character overlap-add procedure circuit (11) and single-chip microcomputer and pulse generating circuit (9) successively, wherein the signal input part as the liquid crystal TV set (7) of terminal presentation facility is to join by the signal output part of video character overlap-add procedure circuit (11) with single-chip microcomputer and pulse generating circuit (9), it is characterized in that it also comprises apart from prewired circuit (5), air pressure electromagnetic switch (12), amplification and driving circuit (6) are formed, used power amplification circuit is two-way power amplification circuit (3), used pre-amplification circuit is the pre-amplification circuit (4) of two-way band filtering, wherein the signal input part of the pulse signal output end of ultrasound wave presetting circuit (2) and two-way power amplification circuit (3) joins, in the automobile bodies rear design two groups of ultrasonic sensor T1 are installed, T2, REC1, REC2 joins with emission and the reception of finishing ultrasonic signal respectively with the pre-amplification circuit (4) of two-way power amplification circuit (3) and the filtering of two-way band respectively, the signal output part of the signal input part of its middle distance prewired circuit (5) and ultrasound wave preregulator (2) joins, input end apart from prewired circuit (5) also is connected with the signal output part of single-chip microcomputer with pulse generating circuit (9), output terminal apart from prewired circuit (5) is connected with amplification and the gentle piezoelectricity magnetic switch of driving circuit (6) (12) successively, to realize self-actuating brake or to remind the driver to note brake.
2, the self-stopping automobile collision preventing video radar of energy according to claim 1, it is characterized in that in described two-way power amplifier circuit (3), 3 pin and the triode N2 base stage of 40KHZ oscillator U6 are wherein joined, the base stage of triode N2 emitter and triode N3 is joined, triode N3 collector is by resistance R 20, inductance L 3 is joined with+12V power supply, the N3 collector joins with the sensor T2 positive pole of doing emission usefulness by capacitor C12 again, another road power amplifier triode N2 emitter joins through the base stage of R45 and triode N4, the collector of triode N4 is by resistance R 19, inductance L 4 is joined with+12V power supply, and the collector of N4 joins by capacitor C 13 and the sensor T1 positive pole of doing emission usefulness again.
3, the self-stopping automobile collision preventing video radar of energy according to claim 1, it is characterized in that in the pre-amplification circuit (4) of described two-way band filter, 1 pin and the receiving sensor REC2 of amplifier U8 wherein join, prime amplifier U8 output terminal 7 pin join by resistance XR2 and triode N13 base stage, 1 pin and the receiving sensor REC1 of the prime amplifier U7 of another road band filter join, 7 pin join by resistance XR1 and triode N12 base stage, and synthetic received pulse joins through 12 pin of C36 and ultrasound wave preregulator (2) integrated circuit U5.
4, the self-stopping automobile collision preventing video radar of energy according to claim 1, it is characterized in that described apart from prewired circuit (5), the join 10 foot meridian capacitor device C005 of .U9 and 5 pin of integrated circuit U10 of 10 pin of the 4 foot meridian capacitor device C003 of integrated circuit U9 wherein and ultrasound wave preregulator (2) integrated circuit U5 join, and 6 pin and the potentiometer RR3 of U10 join.
5, the self-stopping automobile collision preventing video radar of energy according to claim 1, it is characterized in that described air pressure electromagnetic switch (12) and amplification and driving circuit (6), air pressure electromagnetic switch (12) wherein is the two-position three way structure, its driving circuit: the base stage of triode N14 is joined through 4 pin of resistance R 005 with integrated package U10, the N14 emitter joins through diode DD1 and triode amplifier N15 base stage, the N15 emitter joins through R009 and triode N16 base stage, the N16 collector joins through resistance R 011 and triode N17 base stage, the N17 collector joins through resistance R 012 and triode N18 base stage, N18 collector and relay join, relay node A joins with+24V power supply, relay C point and two-position three way air pressure electromagnetic switch PK winding join, when on preset distance, after receiving echoed signal, air pressure electromagnetic switch winding adds+24V voltage that valve just is opened, and auto exhaust is braked.
6, the self-stopping automobile collision preventing video radar of energy according to claim 1, it is characterized in that in described single-chip microcomputer and pulse generating circuit (9), 1 of single-chip microcomputer U1 wherein, 4,2 of the middle U2 of 5 pin and video character overlap-add procedure circuit (11), 3,1 pin joins, 2 of U1,3 pin respectively with triode N9, the emitter of N8 joins, can finish the character stack of a certain position by instruction mode as CPU and order set that this terminal signaling is handled, realize that ranging data superposes with live image, the serial communication receives cpu instruction, reach the purpose of demonstration, wherein the 3 pin outputting standard rect.p.s of pulse generating circuit U3 and 14 pin of U1 join, and distance accuracy can obtain from the frequency of regulating the U3 pulse producer.
7, according to the described energy of claim 1 self-actuating brake video radar for car, it is characterized in that the present invention used integrated package U1, U2, U3, U4, U5, U6, U7, U8, U9, U10 are respectively AT89C51, UPD6564, NE555, NE555, CD4098, NE555, CX20106A, 4098,4081.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121484 CN2752788Y (en) | 2003-12-30 | 2003-12-30 | Vehicle anticollision visual radar capable of automatic braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121484 CN2752788Y (en) | 2003-12-30 | 2003-12-30 | Vehicle anticollision visual radar capable of automatic braking |
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| Publication Number | Publication Date |
|---|---|
| CN2752788Y true CN2752788Y (en) | 2006-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320121484 Expired - Fee Related CN2752788Y (en) | 2003-12-30 | 2003-12-30 | Vehicle anticollision visual radar capable of automatic braking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435993A (en) * | 2011-11-30 | 2012-05-02 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted radar system and detection method thereof |
| CN102501839A (en) * | 2011-11-10 | 2012-06-20 | 湖南恒新环球科技发展有限公司 | Automatic anti-collision system for reversing |
-
2003
- 2003-12-30 CN CN 200320121484 patent/CN2752788Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501839A (en) * | 2011-11-10 | 2012-06-20 | 湖南恒新环球科技发展有限公司 | Automatic anti-collision system for reversing |
| CN102435993A (en) * | 2011-11-30 | 2012-05-02 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted radar system and detection method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Ruan Yueqing Document name: Notification to Pay the Fees |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060118 Termination date: 20101230 |