CN202631732U - Ultrasonic rear-end collision preventing system - Google Patents
Ultrasonic rear-end collision preventing system Download PDFInfo
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- CN202631732U CN202631732U CN 201220284964 CN201220284964U CN202631732U CN 202631732 U CN202631732 U CN 202631732U CN 201220284964 CN201220284964 CN 201220284964 CN 201220284964 U CN201220284964 U CN 201220284964U CN 202631732 U CN202631732 U CN 202631732U
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Abstract
The utility model discloses an ultrasonic rear-end collision preventing system, comprising a controller. The controller is respectively connected with a front ultrasonic receiving circuit of a vehicle, a rear ultrasonic receiving circuit of the vehicle, a warning device and a taillight flickering device; the controller is connected with an ultrasonic emitting sensor through an ultrasonic emitting circuit; the controller is connected with an ultrasonic receiving sensor through an amplification frequency selector and a phase-locked decoding circuit; and the controller is connected with a distance display device through the decoding circuit and a driving circuit. As being provided with a singlechip, the ultrasonic rear-end collision preventing system can judge whether barriers exist in front or back of the vehicle, can prevent rear-end collision of vehicles on expressways, has the functions of preventing opposite collision, moving around the barriers and preventing people from being knocked down, and is simple in design, convenient to use and high in cost performance.
Description
Technical field
The utility model relates to a kind of anti-system that knocks into the back, particularly a kind of ultrasonic wave anti-overtaking-collision system.
Background technology
China has become world car production and marketing first big country, and automotive safety becomes one of urban development urgent problem.For realizing vehicle safety, be necessary the generation of taking intelligent control as far as possible to avoid traffic accident.
The mode of automobile anti-rear end collision still leans on people's vision, the sense of hearing to judge that this mode is under good weather and road conditions at present, and visibility is than higher, and the driver knows quite well the situation in the place ahead, rear crash event can not take place.But when driver's visual determination is slipped up, will have an accident.As under dense fog and the lower situation of visibility in evening, driver's sighting distance diminishes, and it is exactly frequent that rear-end collision takes place.Though this mode is simple, dangerous high, under the only suitable normal condition, be not suitable for emergency case.Therefore, development is necessary based on the anti-technology of knocking into the back of ultrasonic sensor, improves though have on this technology cost slightly; But security has very big assurance; Not only can prevent car tracing cauda, can also prevent knock-on collision, the cut-through thing with prevent to bump against the people.This anti-system intelligent degree that knocks into the back is high, and cost of investment is moderate, is fit to various large, medium and small vehicles.
The utility model content
For addressing the above problem, the purpose of the utility model provides a kind of ultrasonic wave anti-overtaking-collision system, and is higher based on knock into the back engineering reliability and remolding sensitivity of ultrasonic sensor anti-, can make a response rapidly, prevents that rear-end collision from taking place, and reduces traffic hazard.
The apprizing system of appearance treatment plant reaches above-mentioned technique effect for realizing above-mentioned technical purpose, and the utility model is realized through following technical scheme:
A kind of ultrasonic wave anti-overtaking-collision system; Comprise controller, said controller connects the preceding ultrasound wave receiving circuit of car, ultrasound wave receiving circuit behind the car respectively; Warning device and taillight flashing device; Said controller links to each other with the ultrasonic emitting sensor through ultrasonic transmit circuit, and said controller links to each other with the ultrasound wave receiving sensor with lock phase decoding scheme through amplifying frequency selector, and said controller links to each other with distance display device through decoding, driving circuit.
Further, said controller is a singlechip chip.
Further, said controller also links to each other with warning circuit.
Further, said distance display device is four positive high-power charactrons altogether.
Further; Said distance display device driving circuit comprises position choosing mouthful driving circuit and section choosing mouthful driving circuit two parts; Institute's rheme choosing mouthful driving circuit mainly is made up of four positive-negative-positive triodes, and a said section choosing mouthful driving circuit is made up of reverse drive chip and current-limiting resistance.
The principle of the utility model is:
The utility model when system works through ultrasonic sensor detect vehicle apart from situation, through amplify frequency selector and lock mutually decoding scheme information transmission is arrived controller; Controller is through decoding, driving circuit command range display device work, range of a signal and giving the alarm in the scope that the distance of front and back car is being set, otherwise range of a signal.
The beneficial effect of the utility model is:
The utility model Implemented by Using Single-chip Processor can be judged the forward and backward barrier that whether has, and can prevent car tracing cauda, also has the knock-on collision of preventing, the cut-through thing with prevent to bump against the people, simplicity of design, easy to use, cost performance is high.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is ultrasonic transmit circuit and ultrasound wave receiving circuit fundamental diagram;
Fig. 3 is the distance display device cut-away view;
Fig. 4 is controller power supply the principle figure;
Fig. 5 is the workflow diagram of the utility model.
Label declaration among the figure:
1, controller, 2, ultrasonic transmit circuit, 3, the ultrasonic emitting sensor, 4, ultrasound wave receiving circuit before the car; 5, ultrasound wave receiving circuit behind the car, 6, decoding, driving circuit, 7, distance display device; 8, warning device, 9, the taillight flashing device, 10, lock phase decoding scheme.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the utility model.
Referring to shown in Figure 1, a kind of ultrasonic wave anti-overtaking-collision system comprises controller 1; Said controller 1 connects the preceding ultrasound wave receiving circuit 4 of car respectively; Ultrasound wave receiving circuit 5 behind the car, warning device 8 and taillight flashing device 9, said controller 1 links to each other with ultrasonic emitting sensor 3 through ultrasonic transmit circuit 2; Said controller 1 links to each other with the ultrasound wave receiving sensor with lock phase decoding scheme 10 through amplifying frequency selector, and said controller 1 links to each other with distance display device 7 through decoding, driving circuit 6.During system works through ultrasonic sensor detect vehicle apart from situation, through amplify frequency selector and lock mutually decoding scheme information transmission is arrived said controller 1; Said controller 1 is through said distance display device 7 work of said decoding, driving circuit 6 controls, range of a signal and giving the alarm in the scope that the distance of front and back car is being set, otherwise range of a signal.
Further, said controller 1 is a singlechip chip.
Further, said controller 1 also links to each other with warning circuit.
Further, said distance display device 7 is four positive high-power charactrons altogether.
Further; Said distance display device 7 driving circuits comprise position choosing mouthful driving circuit and section choosing mouthful driving circuit two parts; Institute's rheme choosing mouthful driving circuit mainly is made up of four positive-negative-positive triodes, and a said section choosing mouthful driving circuit is made up of reverse drive chip and current-limiting resistance.
Referring to shown in Figure 2, said ultrasonic transmit circuit 2 is the pulse signals that sent by said controller 1, through after the signal shaping, passes to ultrasonic transducer (centre frequency is 40kHz).Convert electrical energy into mechanical energy, go out through sensor emission.Before the said car behind ultrasound wave receiving circuit 4 and the said car ultrasound wave receiving circuit 5 be to be 40 kHz ultrasound waves by ultrasound wave receiving sensor receive frequency; Assurance has enough driving voltages; Signal is given CX20106A; Can produce a low level falling pulse at the 7th pin after the amplification of process CX20106A, amplitude limit, bandpass filtering, detection, integration, the shaping, this signal is received the external interrupt pin (INT0 or INT1) of said controller 1 and is imported as look-at-me.
Referring to shown in Figure 3, said distance display device 7 is four high-power positive charactrons altogether, its driving circuit section of being divided into choosing mouthful driving circuit and position choosing mouthful driving circuit two parts.The driving circuit of each mainly is made up of a positive-negative-positive triode in the position choosing mouthful driving circuit, and the emitter of triode connects the 5V direct supply, and the resistance that base stage meets 1K is connected with SMG again, and collector connects the position choosing end of charactron.A section choosing mouthful driving circuit mainly is made up of chip for driving 74HC595_1 and current-limiting resistance; The section route selection of single-chip microcomputer connects the input end of chip for driving, and chip for driving output terminal QA-QH connects the section choosing mouth of charactron through current-limiting resistance.The mode that shows control employing scan round is carried out, and promptly lights one digit number sign indicating number pipe one by one, and switches at a high speed, because the vision of human eye stops characteristic, it is looked seem a plurality of charactrons steady display simultaneously.
Referring to shown in Figure 4, the external voltage that the chip that boosts (or coil) needs is 12-14V, and said controller 1 WV is 4.0-5. 5V; Consider from cost and compatible aspect; In design, selected the single power supply power supply for use, power supply adopts the 12V direct supply, output 5V voltage behind the L7805 Voltage stabilizing module; Supply with single-chip microcomputer and testing circuit, and the 12V power supply can directly be the chip that boosts (or coil) power supply.
Referring to shown in Figure 5, the utility model realizes that major function has the forward and backward spacing information of automatic detection, judges the size of spacing, show, and when forward and backward spacing is reported to the police in risk range, the size of a range of a signal when overruning.The utility model master routine comprises system initialization, and the counting unit zero clearing starts ultrasonic emitting, starts timer T1/T0; Close ultrasonic transmit circuit, carry out the judgement of ultrasonic signal, if not receiving to return continues to receive, if receive timeing closing device T1/T0; Handle range data, carry out data presentation then, interrupt routine is respectively timer T0 interrupt service routine and timer T1 interrupt service routine, wherein T0 interrupt service routine car front signal control; Signal controlling behind the T1 interrupt service routine car comprises the interruption inlet apart from counting procedure, keeps the scene intact the replacement time constant; The counting of adjusting the distance recovers on-the-spot, interrupts returning.Alert program comprises interrupts inlet, keeps the scene intact, and carries out distance and judges, if in scope, directly do not recover on-the-spot, if in scope, reports to the police earlier and recovers on-the-spot again, interrupts at last returning.
Claims (5)
1. ultrasonic wave anti-overtaking-collision system; Comprise controller (1); It is characterized in that: said controller (1) connects the preceding ultrasound wave receiving circuit (4) of car respectively; Ultrasound wave receiving circuit (5) behind the car, warning device (8) and taillight flashing device (9), said controller (1) links to each other with ultrasonic emitting sensor (3) through ultrasonic transmit circuit (2); Said controller (1) links to each other with the ultrasound wave receiving sensor with lock phase decoding scheme (10) through amplifying frequency selector, and said controller (1) links to each other with distance display device (7) through decoding, driving circuit (6).
2. ultrasonic wave anti-overtaking-collision according to claim 1 system, it is characterized in that: said controller (1) is a singlechip chip.
3. ultrasonic wave anti-overtaking-collision according to claim 1 system, it is characterized in that: said controller (1) also links to each other with warning circuit.
4. ultrasonic wave anti-overtaking-collision according to claim 1 system is characterized in that: said distance display device (7) is four positive high-power charactrons altogether.
5. ultrasonic wave anti-overtaking-collision according to claim 1 system; It is characterized in that: said distance display device (7) driving circuit comprises position choosing mouthful driving circuit and section choosing mouthful driving circuit two parts; Institute's rheme choosing mouthful driving circuit mainly is made up of four positive-negative-positive triodes, and a said section choosing mouthful driving circuit is made up of reverse drive chip and current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284964 CN202631732U (en) | 2012-06-18 | 2012-06-18 | Ultrasonic rear-end collision preventing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284964 CN202631732U (en) | 2012-06-18 | 2012-06-18 | Ultrasonic rear-end collision preventing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631732U true CN202631732U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220284964 Expired - Fee Related CN202631732U (en) | 2012-06-18 | 2012-06-18 | Ultrasonic rear-end collision preventing system |
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| Country | Link |
|---|---|
| CN (1) | CN202631732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513253A (en) * | 2012-06-18 | 2014-01-15 | 苏州卫生职业技术学院 | Ultrasonic anti-tailgating system |
-
2012
- 2012-06-18 CN CN 201220284964 patent/CN202631732U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513253A (en) * | 2012-06-18 | 2014-01-15 | 苏州卫生职业技术学院 | Ultrasonic anti-tailgating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130618 |