CN203063691U - Automobile speed alarm device - Google Patents
Automobile speed alarm device Download PDFInfo
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- CN203063691U CN203063691U CN 201320083231 CN201320083231U CN203063691U CN 203063691 U CN203063691 U CN 203063691U CN 201320083231 CN201320083231 CN 201320083231 CN 201320083231 U CN201320083231 U CN 201320083231U CN 203063691 U CN203063691 U CN 203063691U
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Abstract
The utility model relates to an automobile speed alarm device. The device consists of a vehicle speed sensor, a photocoupling trigger, a singlechip controller, a speed regulation unit, a sound and light alarm unit, an input device, an LED display unit and a power supply voltage reduction and stabilization unit. According to the utility model, three speed alarming threshold values can be set according to road conditions and the model of an automobile, so as to realize real-time vehicle speed reminding. The device is of positive significance for improving the safety of the automobile, and reducing the acquisition cost of the automobile.
Description
Technical field
The utility model relates to a kind of vehicle overspeed alarming device, relates in particular to a kind of vehicle overspeed alarming device.
Background technology
In recent years, along with increasing progressively fast year by year of the recoverable amount of automobile, traffic accident takes place frequently, especially the traffic accident rate that causes with hypervelocity is the highest, and the consequence that accident causes is very serious, become a great difficult problem that influences safety traffic, therefore how to have controlled the important means that the speed of a motor vehicle has become the radical cure traffic accident in real time.
At present, existing speed of a motor vehicle control type of alarm has two kinds, and the one, employing vehicle GPS system provides locating information and the speed information of vehicle, but expensive; The 2nd, adopt the embedded onboard speed-limit device, when automobile design, just consider and embed during fabrication in the finished vehicle electronic control system.The second way was used in homemade medium-to-high grade manned vehicle in 2005, but the not installation of most of automobiles.Therefore, design a kind of external hanging type vehicle overspeed alarming device for improving vehicle safety, the acquisition cost that reduces automobile has positive meaning.
Summary of the invention
The purpose of this utility model is to provide a kind of vehicle overspeed alarming device to be used for the monitoring running car speed of a motor vehicle in real time, reminds chaufeur in case overspeed of vehicle.
In order to realize above-mentioned task, the utility model adopts following technical scheme:
A kind of vehicle overspeed alarming device comprises car speed sensor, photoelectricity coupling binary pair, singlechip controller, speed governing unit, acousto-optic warning unit, input equipment, led display unit and power supply lowering and stabilizing blood pressure unit; Car speed sensor records speed information and be transferred to singlechip controller after the conversion of photoelectricity coupling binary pair; Power supply lowering and stabilizing blood pressure unit, input equipment and speed governing unit are unidirectional to be connected to singlechip controller; The unidirectional connection of singlechip controller to acousto-optic warning unit and led display unit.
It is the micro controller system of AT89C51 that singlechip controller adopts model.
It is the photoelectricity coupling binary pair of PC817 that photoelectricity coupling binary pair adopts model.
Power supply lowering and stabilizing blood pressure unit is selected three terminal integrated voltage stabilizer W7805 for use.
Acousto-optic warning unit adopts miniwatt combined aural and visual alarm CBSHD.
The beneficial effects of the utility model are that a kind of vehicle overspeed alarming device can arrange three speed of a motor vehicle alarming threshold values according to vehicle and condition of road surface, manually select alarming threshold value according to road conditions, realize online Realtime Alerts and the prompting of the speed of a motor vehicle.
Description of drawings
Fig. 1 is composition diagram of the present utility model.
Fig. 2 is control flow chart of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of vehicle overspeed alarming device comprises car speed sensor, photoelectricity coupling binary pair, singlechip controller, speed governing unit, acousto-optic warning unit, input equipment, led display unit and power supply lowering and stabilizing blood pressure unit; Car speed sensor records speed information and be transferred to singlechip controller after the conversion of photoelectricity coupling binary pair; Power supply lowering and stabilizing blood pressure unit, input equipment and speed governing unit are unidirectional to be connected to singlechip controller, to singlechip controller input power supply and control command; The unidirectional connection of singlechip controller is to being connected with led display unit with acousto-optic warning unit, and output command.
It is the micro controller system of AT89C51 that singlechip controller adopts model.
It is the photoelectricity coupling binary pair of PC817 that photoelectricity coupling binary pair adopts model.It is to be a kind of electrical-optical-power conversion device of media transmission signal with light, is made up of light emitting source and light-receiving device.When the car speed sensor signal is positioned at high level, the luminous and control light-receiving device conducting of light emitting source, then the light-receiving device mouth produces the voltage signal consistent with the car speed sensor frequency.Because what car speed sensor produced is constant current low resistance signal, magnitude of voltage is subjected to the influence of external loading big.The purpose that adopts photoelectrical coupler PC817 transmission vehicle speed signal is that elimination car speed sensor signal is to the adverse effect of micro controller system for the contacting directly of runner wagon speed sensors and micro controller system.
Acousto-optic warning unit adopts miniwatt combined aural and visual alarm CBSHD.
Power supply lowering and stabilizing blood pressure unit is made up of three terminal integrated voltage stabilizer W7805.
The speed governing unit is realized that by band switch band switch is divided into three gears, corresponding three speed of a motor vehicle alarming threshold values.Three branch haptic elements are connected with three input pins of singlechip controller respectively, and total haptic element links to each other with power supply, and three input pins of singlechip controller have only a pin to communicate with power supply at any time.
Be illustrated in figure 2 as alert program of the present utility model, assembly language is adopted in software programming, uses singlechip controller as timer.The time of setting timer is 50ms, and timing one arrives, and overflows interruption, in interrupt service routine, the interruption times register is added 1, repeats regularly to interrupt 20 times, and the time is 1s.The 1s timing arrives, and reads the input pulse number of timer, is real-time vehicle speed value.The setting threshold values of this vehicle speed value and singlechip controller inside is compared, judge whether exceed the speed limit.
Claims (5)
1. vehicle overspeed alarming device, its feature comprise car speed sensor, photoelectricity coupling binary pair, singlechip controller, speed governing unit, acousto-optic warning unit, input equipment, led display unit and power supply lowering and stabilizing blood pressure unit; Car speed sensor records speed information and be transferred to singlechip controller after the conversion of photoelectricity coupling binary pair; Power supply lowering and stabilizing blood pressure unit, input equipment and speed governing unit are unidirectional to be connected to singlechip controller; The unidirectional connection of singlechip controller to acousto-optic warning unit and led display unit.
2. a kind of vehicle overspeed alarming device as claimed in claim 1, the model that it is characterized in that singlechip controller is AT89C51.
3. a kind of vehicle overspeed alarming device as claimed in claim 1 is characterized in that photoelectricity coupling binary pair model is PC817.
4. a kind of vehicle overspeed alarming device as claimed in claim 1 is characterized in that power supply lowering and stabilizing blood pressure unit selects three terminal integrated voltage stabilizer W7805 for use.
5. a kind of vehicle overspeed alarming device as claimed in claim 1 is characterized in that acousto-optic warning unit adopts miniwatt combined aural and visual alarm CBSHD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083231 CN203063691U (en) | 2013-02-22 | 2013-02-22 | Automobile speed alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083231 CN203063691U (en) | 2013-02-22 | 2013-02-22 | Automobile speed alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203063691U true CN203063691U (en) | 2013-07-17 |
Family
ID=48762511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320083231 Expired - Fee Related CN203063691U (en) | 2013-02-22 | 2013-02-22 | Automobile speed alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203063691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454404A (en) * | 2018-02-11 | 2018-08-28 | 周丰 | A kind of automobile multiple speed warning device and its method |
-
2013
- 2013-02-22 CN CN 201320083231 patent/CN203063691U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454404A (en) * | 2018-02-11 | 2018-08-28 | 周丰 | A kind of automobile multiple speed warning device and its method |
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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: 20130717 Termination date: 20140222 |