CN201936008U - Low-frequency radio vehicle back-up alarm system - Google Patents
Low-frequency radio vehicle back-up alarm system Download PDFInfo
- Publication number
- CN201936008U CN201936008U CN2010206742549U CN201020674254U CN201936008U CN 201936008 U CN201936008 U CN 201936008U CN 2010206742549 U CN2010206742549 U CN 2010206742549U CN 201020674254 U CN201020674254 U CN 201020674254U CN 201936008 U CN201936008 U CN 201936008U
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- processing module
- radiating antenna
- signal processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model discloses a low-frequency radio vehicle back-up alarm system. The system consists of an alarm module, a signal processing module, a signal emitting module, a signal receiving module and a radiating antenna, wherein the output end of the signal processing module is connected with the control end of the signal emitting module; the signal emitting end of the signal emitting module is connected with the input end of the radiating antenna; the output end of the radiating antenna is connected with the signal input end of the signal receiving module; the detection signal end of the signal receiving module is connected with the detection signal input end of the signal processing module; and the alarm control end of the signal processing module is connected with the alarm module. The detection and the alarm of a barrier when a vehicle backs up can be precisely realized through the system and the system is convenient to mount and has low cost.
Description
Technical field:
The utility model belongs to a kind of warning system, particularly a kind of low frequency radio car reversing anti-collision alarm system and detection method.
Background technology:
Traditional reversing automobile anti-collision alarm system generally adopts the ultrasonic listening system at present, and the 30k-40kHz signal that is produced by signal generator drives ultrasonic transducer emission ultrasound wave.When running into the obstacle object of automobile rear, reflection echo is to receiving ultrasonic transducer, and transducer is an electric signal with ultrasonic signal, and signal processor is through the relatively distance and the alarm of the time delay survey obstacle object of emission and echo.The patent No. is that 200620056519 patents such as " reversing radar of vehicle " all is based on this principle and realizes, though these radar for backing car have to hull back object detection ability advantages such as strong and rate of false alarm is low, weak point such as all have the installation complexity, cost is high and need hole on car body.
Summary of the invention:
The purpose of this utility model just is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of low frequency radio car reverse alarming system and detection method, this system not only can accurately realize the detection and the warning of barrier during backing of automobile, and has easy for installation, cheap.
As above design, the purpose of this utility model is achieved by the following technical solution:
A kind of low frequency radio car reverse alarming system is characterized in that: be made up of alarm module, signal processing module, signal emission module, signal receiving module and radiating antenna; The output terminal of signal processing module is connected with the control end of signal emission module, the signal transmitting terminal of signal emission module is connected with the input end of radiating antenna, the output terminal of radiating antenna is connected with the signal input part of signal receiving module, the detection signal end of signal receiving module is connected with the detection signal input end of signal processing module, and the controlling alarm end of signal processing module is connected with alarm module.
It is core processor that above-mentioned signal processing module adopts 89C2051.
Above-mentioned signal emission module is connected to form successively by bias control circuit, high frequency low-power transistor and transformer coupled feedback oscillation circuit.
Above-mentioned signal receiving module is connected to form by waveform shaping signal circuit and detecting circuit, wherein, the signal input part of waveform shaping signal circuit is connected with radiating antenna, and the detection signal end of detecting circuit is connected with the detection signal input end 6P3.2 of signal processing module.
Above-mentioned radiating antenna is constituted by many leads, and an end is connected simultaneously with signal emission module, signal receiving module, other end open circuit.
The utility model adopts the obstacle object at radio signal detection vehicle rear portion, and it externally forms the obstacle object that radiation is detectable rear portion, therefore, need not when mounted car body is changed, and directly attaches it in the rear vehicle bumper to get final product.It is simple in structure, with low cost, easy for installation, can be applicable to preferably that reversing automobile is crashproof.
Description of drawings:
Fig. 1 is the block diagram of system of the present utility model.
Fig. 2 is the signal emission module block scheme.
Fig. 3 is the signal receiving module block scheme.
Fig. 4 is the signal processing module block scheme.
Embodiment:
As shown in Figure 1: a kind of low frequency radio car reverse alarming system, be made up of alarm module, signal processing module, signal emission module, signal receiving module and radiating antenna.The output terminal of signal processing module is connected with the control end of signal emission module, the signal transmitting terminal of signal emission module is connected with an end of radiating antenna, this end of radiating antenna is connected with the signal input part of signal receiving module simultaneously, the detection signal end of signal receiving module is connected with the detection signal input end of signal processing module, and the controlling alarm end of signal processing module is connected with alarm module.Above-mentioned radiating antenna is constituted by many leads, and an end is connected simultaneously with signal emission module, signal receiving module, other end open circuit.
As shown in Figure 2: signal emission module is connected to form successively by bias control circuit, high frequency low-power transistor and transformer coupled feedback oscillation circuit, realize low frequency radio oscillator signal, the signal transmitting terminal of transformer coupled feedback oscillation circuit is connected with radiating antenna.Its medium-high frequency low-power transistor can adopt the triode of models such as 9018,8050, and bias control circuit and transformer feedback coupled circuit should be able to be realized positive feedback, is radiated in the space by radiating antenna to guarantee the radio signal that produces 200k-400kHz.
As shown in Figure 3: signal receiving module is connected to form by waveform shaping signal circuit and detecting circuit, wherein, the signal input part of waveform shaping signal circuit is connected with radiating antenna, the variation radio signal of received radiation antenna, the detection signal end of detecting circuit is connected with the detection signal input end 6P3.2 of signal processing module.
As shown in Figure 4: signal processing module is a core processor by 89C2051, adopt the work of 24MHz crystal oscillator, by frequency analysis and processing to detection signal input end 6P3.2 signal, detect extraneous barrier situation, and according to the distance of barrier, produce alarm control signal, send crashproof alarm signal, controlling alarm end 9P3.5 is connected with alarm module.
The course of work of the present utility model is: signal processing module control signal transmitter module produce the radio signal of 200k-400kHz by oscillator with transformer feedback and by radiating antenna to spatial emission, when existing the obstacle object, automobile tail will produce disturbance to the radio signal of radiation, and generation echo, signal receiving module carries out shaping and detection to received signal and signal is sent into signal processing module, the CPU89C2051 of signal processing module carries out frequency analysis and processing to the feedback signal that signal receiving module receives, and judges whether automobile rear exists the obstacle object.Produce alerting signal after the variation that detects signal is above the threshold value of setting, wherein threshold value can be provided with three from low to high, the distance of corresponding obstacle object distance car body, and produce three kinds of alerting signals to remind driver's attention.
Claims (5)
1. a low frequency radio car reverse alarming system is characterized in that: be made up of alarm module, signal processing module, signal emission module, signal receiving module and radiating antenna; The output terminal of signal processing module is connected with the control end of signal emission module, the signal transmitting terminal of signal emission module is connected with the input end of radiating antenna, the output terminal of radiating antenna is connected with the signal input part of signal receiving module, the detection signal end of signal receiving module is connected with the detection signal input end of signal processing module, and the controlling alarm end of signal processing module is connected with alarm module.
2. low frequency radio car reverse alarming according to claim 1 system is characterized in that: it is core processor that above-mentioned signal processing module adopts 89C2051.
3. low frequency radio car reverse alarming according to claim 1 system, it is characterized in that: above-mentioned signal emission module is connected to form successively by bias control circuit, high frequency low-power transistor and transformer coupled feedback oscillation circuit.
4. low frequency radio car reverse alarming according to claim 1 system, it is characterized in that: above-mentioned signal receiving module is connected to form by waveform shaping signal circuit and detecting circuit, wherein, the signal input part of waveform shaping signal circuit is connected with radiating antenna, and the detection signal end of detecting circuit is connected with the detection signal input end 6P3.2 of signal processing module.
5. low frequency radio car reverse alarming according to claim 1 system, it is characterized in that: above-mentioned radiating antenna is constituted by many leads, and an end is connected simultaneously with signal emission module, signal receiving module, other end open circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206742549U CN201936008U (en) | 2010-12-24 | 2010-12-24 | Low-frequency radio vehicle back-up alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206742549U CN201936008U (en) | 2010-12-24 | 2010-12-24 | Low-frequency radio vehicle back-up alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936008U true CN201936008U (en) | 2011-08-17 |
Family
ID=44447526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206742549U Expired - Fee Related CN201936008U (en) | 2010-12-24 | 2010-12-24 | Low-frequency radio vehicle back-up alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201936008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105123448A (en) * | 2015-09-02 | 2015-12-09 | 天津科技大学 | Wireless irrigation automatic control system and method with electric butterfly valve |
-
2010
- 2010-12-24 CN CN2010206742549U patent/CN201936008U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105123448A (en) * | 2015-09-02 | 2015-12-09 | 天津科技大学 | Wireless irrigation automatic control system and method with electric butterfly valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3127769U (en) | Vehicle reverse radar device that sounds an alarm when a car is close | |
| CN102390341B (en) | Automotive anti-collision alarm | |
| CN201856703U (en) | Safety getting-off early warning device for automobiles | |
| CN206161854U (en) | Ultrasonic wave intelligent distance -measuring alarm system | |
| CN203480702U (en) | Anti-crash early warning system and vehicle having same | |
| CN104139730A (en) | Vehicle ranging warning device | |
| CN203259653U (en) | Multi-target detection system of automotive anti-collision radar | |
| CN201936008U (en) | Low-frequency radio vehicle back-up alarm system | |
| CN201322805Y (en) | Full digital intelligent automobile anti-collision radar | |
| CN202243307U (en) | Intelligent anti-collision alarm for automobile | |
| CN103226199A (en) | Anti-collision alarm system for automobile reversing | |
| CN202956487U (en) | Reversing radar system with laser ranging function | |
| CN202966125U (en) | Back-up radar system based on receiving-and-sending of ultrasonic | |
| CN202614938U (en) | Vehicle accident warning device | |
| Zhang | Research of ultrasonic distance measurement device | |
| CN202815218U (en) | Host-free reversing radar | |
| CN203133278U (en) | Reversing anti-collision device for household mini-size electric automobile | |
| CN207000674U (en) | Detect warning device in a kind of electric bicycle side | |
| CN206161850U (en) | Mobile device intelligent distance -measuring system | |
| CN207257811U (en) | Anti- at most radar empennage | |
| CN102323588A (en) | Reversing radar automatic stop device | |
| CN202130376U (en) | Electric motor car | |
| CN203958061U (en) | A kind of vehicle-mounted anti-collision warning device during backing | |
| CN202512243U (en) | Anti-collision automatic alarm system of vehicle | |
| CN219162375U (en) | Ultrasonic detection circuit, ultrasonic sensor chip and automobile radar device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG STEELMATE SECURITY CO., LTD. Effective date: 20120206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120206 Address after: 100081 No. 5, Zhongguancun South Street, Haidian District, Beijing Co-patentee after: Guangdong Steelmate Security Co., Ltd. Patentee after: BEIJING INSTITUTE OF TECHNOLOGY Address before: 100081 No. 5, Zhongguancun South Street, Haidian District, Beijing Patentee before: BEIJING INSTITUTE OF TECHNOLOGY |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111224 |