CN2847313Y - Digital radar sensor for reversing car - Google Patents
Digital radar sensor for reversing car Download PDFInfo
- Publication number
- CN2847313Y CN2847313Y CN 200520061553 CN200520061553U CN2847313Y CN 2847313 Y CN2847313 Y CN 2847313Y CN 200520061553 CN200520061553 CN 200520061553 CN 200520061553 U CN200520061553 U CN 200520061553U CN 2847313 Y CN2847313 Y CN 2847313Y
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- signal
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- sensor
- amplifying circuit
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Abstract
The utility model discloses a digital radar sensor for reversing a car, which has a structure comprising a casing, an ultrasonic probe, an emitting and receiving amplifying circuit board and a 3P plug wire connected with a host, wherein the 3P plug wire is composed of a power wire, a ground wire and a signal wire. By adopting the structure, when the sensor receives an emitted signal transferred by the host, an emitting circuit in the sensor drives the probe to emit an ultrasonic signal. After emitted ultrasonic waves meet an obstacle, are reflected back and are received by the probe, the signal is directly amplified by an amplifying circuit in the sensor. Then, the signal is transferred to the host to be processed through a connecting wire of the host. Thus, the interference immunity of the radar sensor for reversing a car is enhanced and reliability is good.
Description
Technical field
The utility model belongs to technical field of automotive electronics, is specifically related to a kind of digital-code type radar for backing car sensor.
Background technology
At present, the radar for backing car that uses on most of automobiles is to utilize ultrasonic sensor to launch and accept hyperacoustic, be positioned at the ultrasonic sensor emission ultrasound wave of automobile tail, when ultrasound wave runs into barrier, reflect, sensor carries out processing and amplifying by one section very long shielded conductor with the amplifying circuit that ultrasonic signal is sent on the main frame after receiving the ultrasound wave that reflects, and the signal after the processing and amplifying sends single-chip microcomputer to and demonstrates the corresponding warning signal.Because it is a very faint signal that ultrasonic sensor receives the signal that reflects, again through a very long section lead, signal attenuation is just littler like this, and lead also needs to use shielded conductor to prevent external interference, phenomenon such as so just be easy to generate false alarm or do not report to the police.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of digital-code type radar for backing car sensor simple in structure is provided, and to improve the anti-interference of radar for backing car, reduces the generation of problems such as false alarm.
For achieving the above object, the technical solution of the utility model is as follows: digital-code type radar for backing car sensor, its structure is formed and is comprised housing, be provided with emission in the housing and receive amplifying circuit board and ultrasonic probe, ultrasonic probe and emission and receive amplifying circuit board and is connected, and emission and reception amplifying circuit board are provided with a 3P plug wire that links to each other with the radar for backing car main frame.
The above-mentioned 3P plug wire that links to each other with main frame is respectively power lead, ground wire and signal wire.
The utility model is by adopting said structure, when sensor is received by transmitting that main frame sends, radiating circuit in the sensor drives probe emission ultrasonic signal, after ultrasonic waves transmitted signal chance barrier reflects by the probe reception, amplifying circuit in sensor directly amplifies signal, and then pass to host process by connecting line with main frame, improved the anti-interference of radar for backing car sensor, and good reliability.
Description of drawings
Fig. 1 is STRUCTURE DECOMPOSITION figure of the present utility model;
Fig. 2 is a surface structure synoptic diagram of the present utility model;
Fig. 3 is a principle of work block scheme of the present utility model;
Fig. 4 is circuit theory diagrams of the present utility model.
Among the figure:
1 housing
2 emissions and reception amplifying circuit board
3 ultrasonic probes
4 3P plug wires
5 main frames
6 displays
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment:
As shown in Figure 1 and Figure 2, the utility model has a housing 1, is provided with emission in the housing 1 and receives amplifying circuit board 2 and ultrasonic probe 3.Emission and reception amplifying circuit board 2 are provided with a 3P plug wire 4 that links to each other with the radar for backing car main frame, and this 3P plug wire 4 is respectively power lead, ground wire and signal wire.
As Fig. 3, shown in Figure 4, when the utility model uses, main frame 5 sends a ultrasonic signal and gives the emission in the utility model housing 1 and receive amplifying circuit board 2, it is that a higher ultrasonic signal of level drives ultrasonic probe 3 that the amplifying circuit of emission and reception amplifying circuit board 2 boosts signal, because barrier produces reflection to ultrasound wave, when ultrasonic probe 3 receives reflected signal, the amplifying circuit that the signal that reflects is given emission and received amplifying circuit board 2 amplifies after 3P connects lead 4 sends main frame 5 to and handle, make main frame 5 send corresponding signal and give display 6, display 6 is promptly made corresponding variation.
More than describing is that the utility model is sent out a certain embodiments, and the utility model is not limited only to the specific structure of above diagram or description, and claim will cover all changes scheme in connotation of the present utility model and the scope.
Claims (2)
1, digital-code type radar for backing car sensor, it is characterized in that: comprise a housing, be provided with emission in the housing and receive amplifying circuit board and ultrasonic probe, ultrasonic probe and emission and receive amplifying circuit board and is connected, and emission and reception amplifying circuit board are provided with a 3P plug wire that links to each other with the radar for backing car main frame.
2, digital-code type radar for backing car sensor according to claim 1 is characterized in that: the described 3P plug wire that links to each other with main frame is respectively power lead, ground wire and signal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520061553 CN2847313Y (en) | 2005-07-19 | 2005-07-19 | Digital radar sensor for reversing car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520061553 CN2847313Y (en) | 2005-07-19 | 2005-07-19 | Digital radar sensor for reversing car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2847313Y true CN2847313Y (en) | 2006-12-13 |
Family
ID=37512737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520061553 Expired - Fee Related CN2847313Y (en) | 2005-07-19 | 2005-07-19 | Digital radar sensor for reversing car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2847313Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220989A (en) * | 2020-01-17 | 2020-06-02 | 铁将军汽车电子股份有限公司 | Obstacle detection method and apparatus |
-
2005
- 2005-07-19 CN CN 200520061553 patent/CN2847313Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220989A (en) * | 2020-01-17 | 2020-06-02 | 铁将军汽车电子股份有限公司 | Obstacle detection method and apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061213 Termination date: 20140719 |
|
| EXPY | Termination of patent right or utility model |