CN203133278U - Reversing anti-collision device for household mini-size electric automobile - Google Patents
Reversing anti-collision device for household mini-size electric automobile Download PDFInfo
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- CN203133278U CN203133278U CN 201320076848 CN201320076848U CN203133278U CN 203133278 U CN203133278 U CN 203133278U CN 201320076848 CN201320076848 CN 201320076848 CN 201320076848 U CN201320076848 U CN 201320076848U CN 203133278 U CN203133278 U CN 203133278U
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- ultrasonic
- electric automobile
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Abstract
The utility model discloses a reversing anti-collision device for a household mini-size electric automobile. The reversing anti-collision device for the household mini-size electric automobile includes an ultrasonic-wave sensor, an ultrasonic-wave-transmitting and echo-receiving circuit, an ultrasonic-wave amplifying and reshaping circuit, a dual 4-channel analog switch, a single-chip microprocessor and a sound alarm circuit. The ultrasonic-wave sensor is connected with the ultrasonic-wave-transmitting and echo-receiving circuit. The ultrasonic-wave-transmitting and echo-receiving circuit is connected to the single-chip microprocessor through the dual 4-channel analog switch. One end of the ultrasonic-wave amplifying and reshaping circuit is connected with the dual 4-channel analog switch while the other end is connected with the single-chip microprocessor. The sound alarm circuit is connected with the single-chip microprocessor. The utility model adopts the ultrasonic-wave sensor, the ultrasonic-wave-transmitting and echo-receiving circuit and the single-chip microprocessor and realizes ultrasonic-wave intelligent distance measurement with high accuracy and no error. The reversing anti-collision device for the household mini-size electric automobile can be used for prompting a driver to reverse the automobile safely in a human-based manner, so that the automobile using safety is improved.
Description
Technical field
The utility model belongs to the electric automobile applied technical field, particularly a kind of domestic miniature electric automobile reversing collision avoidance system.
Background technology
Along with the development of society, the car owning amount of China is increasing, and environmental pollution, energy shortage problem are also serious day by day.Electric automobile just grows up, and much regional in China, the mini domestic electric automobile is brought into use, but a lot of configuration is still waiting further perfect.At present, two kinds of new technologies have appearred in reversing: ultrasonic ranging and backsight shooting.The shooting of radar for backing car and backsight cuts both ways, and the former has the advantage of definite judging distance, but to the reinforcing bar of the ditch at car rear, cliff, protrusion, bamboo bar etc., ultrasound wave can't be responded to, and this also is the dead angle on the reversing safety; Latter's image is intuitively true, but can't obtain accurate distance.How both advantages are got up, the shortcoming of eliminating both is the emphasis difficult problem that reversing multimedia visual range finding terminal solves.
The utility model content
In view of this, the purpose of this utility model provides a kind of domestic miniature electric automobile reversing collision avoidance system, and is simple in structure, cost is cheap, volume is little, long service life.
To achieve these goals, the utility model is by the following technical solutions:
A kind of domestic miniature electric automobile reversing collision avoidance system, wherein, domestic miniature electric automobile reversing collision avoidance system comprises that ultrasonic sensor, ultrasound wave emission and echo receiving circuit, ultrasound wave amplification and shaping circuit, two four select an analog switch, single-chip microcomputer and sound warning circuit; Emission is connected with the echo receiving circuit described ultrasonic sensor with ultrasound wave, and the ultrasound wave emission selects an analog switch to be connected single-chip microcomputer with echo receiving circuit warp two four, and the ultrasound wave amplification is selected an analog switch with shaping circuit one termination two four, and the other end connects single-chip microcomputer; Described audible alarm circuit connects single-chip microcomputer.
As preferably, described domestic miniature electric automobile reversing collision avoidance system also comprises display circuit.
As preferably, described audible alarm circuit is hummer.
The beneficial effects of the utility model are:
The utility model adopts ultrasonic sensor, ultrasound wave emission and echo receiving circuit and single-chip microcomputer, has realized the ultrasonic intelligent range finding, accuracy height, error free, but hommization ground points out the driver to move backward safely, has improved and has used car safety.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can from practice of the present utility model, obtain instruction.Target of the present utility model and other advantages can realize and obtain by specifically noted structure in following instructions or the accompanying drawing.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is the emission of the utility model ultrasound wave and echo receiving circuit schematic diagram.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, the utility model comprises ultrasonic sensor 1, the ultrasound wave emission is amplified with echo receiving circuit 2, ultrasound wave and shaping circuit 3, two four selects an analog switch 7, single-chip microcomputer 4, audible alarm circuit 5 and display circuit 6.Emission is connected with echo receiving circuit 2 ultrasonic sensor 1 with ultrasound wave, the ultrasound wave emission selects an analog switch 7 to be connected single-chip microcomputer 4 with echo receiving circuit 2 through two four, ultrasound wave amplifies and shaping circuit 3 one terminations two four are selected an analog switch 7, and the other end connects single-chip microcomputer 4; Audible alarm circuit 5 connects single-chip microcomputer 4.Audible alarm circuit 5 is selected hummer for use, and display circuit 6 adopts the LED charactron.
As shown in Figure 2, the ultrasound wave emission is to improve the pulse voltage amplitude that drives ultrasonic sensor with the main effect of echo receiving circuit, carry out electricity/sound conversion effectively, increase hyperacoustic transmitting range, and the ultrasonic sensor by transceiver, the ultrasound wave that returns is transformed into faint electric signal.
When reversing automobile, the utility model is connected system power supply automatically, and system power-on reset enters duty.Mcu programming produces the square-wave voltage of a string 40kHz, selects an analog switch to be added to ultrasound wave through four and launches and the echo receiving circuit, launches ultrasound wave through amplifying the driving ultrasonic sensor, and single-chip microcomputer picks up counting simultaneously.The ultrasound wave of launching forms reflection wave after running into barrier, the part reflection wave returns and acts on ultrasonic sensor, and the sound/electricity conversion through ultrasonic sensor becomes faint electric signal, this faint electric signal produces negative leaping voltage through amplification, shaping, sends to single-chip microcomputer and interrupts application.After single-chip microcomputer was received the signal that interrupts application, the external interrupt service routine was carried out in interruptions that make an immediate response, and stops timing, the time T that obtains the ultrasound wave transmission and return, calculate launching site from barrier apart from S, that is: S=(CT)/2.C is the aerial reception and registration speed of ultrasound wave, and when 25 ℃ of normal temperature, C is about 346m/s.If the ultrasound wave of launching does not run into barrier in finding range, regularly interrupt producing up to single-chip microcomputer, carry out regularly interrupt service routine, select next road, order by Hou Zuolu, back Zuo Zhonglu, back You Zhonglu, back right wing continues to transmit and receive ultrasound wave successively, and through computing.Four tunnel detections dispose, and select the lowest distance value of measuring in four tunnel and show by the LED charactron.When lowest distance value during less than predefined alarm distance, single-chip microcomputer is connected the power supply of hummer, and hummer sends chimes of doom.Interrupt application if four the tunnel survey no echo, then show " .--", showing does not have barrier in safe distance, continues the loop detection of next round again and handles.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. domestic miniature electric automobile reversing collision avoidance system is characterized in that: domestic miniature electric automobile reversing collision avoidance system comprises that ultrasonic sensor, ultrasound wave emission select an analog switch, single-chip microcomputer and sound warning circuit with echo receiving circuit, ultrasound wave amplification and shaping circuit, two four; Emission is connected with the echo receiving circuit described ultrasonic sensor with ultrasound wave, and the ultrasound wave emission selects an analog switch to be connected single-chip microcomputer with echo receiving circuit warp two four, and the ultrasound wave amplification is selected an analog switch with shaping circuit one termination two four, and the other end connects single-chip microcomputer; Described audible alarm circuit connects single-chip microcomputer.
2. a kind of domestic miniature electric automobile reversing collision avoidance system according to claim 1, it is characterized in that: described domestic miniature electric automobile reversing collision avoidance system also comprises display circuit.
3. a kind of domestic miniature electric automobile reversing collision avoidance system according to claim 1, it is characterized in that: described audible alarm circuit is hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320076848 CN203133278U (en) | 2013-02-16 | 2013-02-16 | Reversing anti-collision device for household mini-size electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320076848 CN203133278U (en) | 2013-02-16 | 2013-02-16 | Reversing anti-collision device for household mini-size electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203133278U true CN203133278U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320076848 Expired - Lifetime CN203133278U (en) | 2013-02-16 | 2013-02-16 | Reversing anti-collision device for household mini-size electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203133278U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761453A (en) * | 2016-03-14 | 2016-07-13 | 汕头市奥斯卡网络科技有限公司 | Electronic device avoiding watching television at close range |
| CN107505618A (en) * | 2017-08-31 | 2017-12-22 | 安徽信息工程学院 | Automobile preposition detects the device of section width |
-
2013
- 2013-02-16 CN CN 201320076848 patent/CN203133278U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761453A (en) * | 2016-03-14 | 2016-07-13 | 汕头市奥斯卡网络科技有限公司 | Electronic device avoiding watching television at close range |
| CN107505618A (en) * | 2017-08-31 | 2017-12-22 | 安徽信息工程学院 | Automobile preposition detects the device of section width |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
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| CX01 | Expiry of patent term |