CN202130318U - Speed measuring device for electric vehicle - Google Patents
Speed measuring device for electric vehicle Download PDFInfo
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- CN202130318U CN202130318U CN201120203795U CN201120203795U CN202130318U CN 202130318 U CN202130318 U CN 202130318U CN 201120203795 U CN201120203795 U CN 201120203795U CN 201120203795 U CN201120203795 U CN 201120203795U CN 202130318 U CN202130318 U CN 202130318U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The utility model discloses a speed measuring device for an electric vehicle, which comprises a central processing unit, a speed collecting module, a display module and a power module; the power module is used for power supply; and the speed collecting module is connected with the central processing unit. A collected speed signal is transmitted to the central processing unit to process; and the processed data is displayed through the display module so as to monitor and remind users of safely driving in real time.
Description
Technical field
The utility model relates to a kind of battery-driven car safety alarm device, more specifically is a kind of battery-driven car speed measuring device.
Background technology
Because traffic congestion, the battery-driven car of present increasing choose convenient power-saving is made in the trip instrument, however in the traffic accident, just have 8 one-tenths above relevant with battery-driven car, and the dead accident of battery-driven car traffic also rises continuous.
Traffic control department is detected battery-driven car; Find that many manufacturers change the engineering design standard of national regulation without authority; The speed regulator of scalable power is installed, is made the speed of Electrical Bicycle generally surpass 20 kilometers speed per hour of design production standard defined.
In addition, still lack a kind of speed warning device on the battery-driven car market, sound is very little in the electric vehicle running process, and the pedestrian in the place ahead does not often know that there is battery-driven car at the rear, if the unexpected lane change of pedestrian in this time, the battery-driven car excessive velocities is easy to occurrence of traffic accident.
The utility model content
The technical matters that the utility model solves provides a kind of portable speed-measuring device that can measure battery-driven car speed in real time.
For solving the problems of the technologies described above a kind of battery-driven car speed measuring device that the utility model provides; Comprise central process unit, speed acquisition module, display module and the power module that is used to supply power; Said speed acquisition module links to each other with central process unit; The speed signal that collects is sent to central process unit handle, the data after handling are shown through display module.
Further, also comprise the memory module that is used to store data in a kind of battery-driven car speed measuring device of the utility model, said memory module links to each other with central process unit.
Further, also comprise data communication module in a kind of battery-driven car speed measuring device of the utility model, said data communication module links to each other with central process unit.
Further, also comprise buzzer phone in a kind of battery-driven car speed measuring device of the utility model, said buzzer phone links to each other with central process unit, is used to remind the user.
The utility model compared with prior art has the following advantages: electric vehicle running speed can be monitored in (1), store electricity motor-car driving information; (2) along with the battery-driven car velocity variations; The sound of buzzer phone also can send variation, and speed is fast more, and buzzer phone sound is loud more; Play warning function in the process of moving; Prompting the place ahead or blind area pedestrian notice that there is electric vehicle running at the rear, and actv. has guaranteed traffic safety, has reduced the traffic accident incidence.
Description of drawings
Fig. 1 battery-driven car safety traffic device circuit block diagram.
Fig. 2 central process unit and display module circuit connection diagram.
The specific embodiment
As shown in Figure 1, the utility model battery-driven car speed measuring device comprises central process unit, display module, data communication module, speed acquisition module, buzzer phone and power module.Central process unit links to each other with power module with display module, data communication module, speed acquisition module, buzzer phone respectively; This equipment adopts ARMS3C2410; A kernel has the data space of lcd controller, usb host, USB device, a constant volume based on 32 risc processors of High Performance of ARM920T.Central process unit is used for control and coordinates other each module work, and central process unit control rate acquisition module is gathered the velocity information of battery-driven car, and the velocity information after will handling is shown to the user through display module.Central process unit control buzzer phone sounding, the faster buzzer phone sound of speed is big more.
Display module adopts LCD to show, is used to show the speed and the mileage information of battery-driven car.Central process unit S3C2410 supports the LCD of TFT/STN type, and inner integrated lcd controller is used for looking the screen data and producing the necessary control signal of transfer frame buffer memory.Central process unit is processed into corresponding data format with video data, and VD [23:3] pin through lcd controller sends the LCD screen to.The VFRAME of central process unit lcd controller, VCLK, VLINE, VM pin link to each other the frame synchronizing signal between VFRAME:LCD controller and the lcd driver respectively at VFRAM, VCLK, VLINE, the VM pin of LCD screen actuator; Line synchronizing pulse signal between VLINE:LCD controller and the lcd driver; The VM:VM signal is used to change the polarity of voltage of row and column by lcd driver, thus the demonstration of control pixel or extinguish.VCLK is the pixel clock signal between lcd controller and the lcd driver.
Said data communication module adopts usb communication; Communication module links to each other with power module respectively at central process unit; When needs extract electric vehicle running information, only need USB flash disk be inserted USB interface, just can read the electric vehicle running information of storing in the central process unit.There are 2 USB host and a USB device interface in S3C2410 inside, and this equipment has adopted the USB.host structure.
Said speed acquisition module converts the speed of a motor vehicle to impulse singla through Hall element, and central process unit utilizes in-to-in timing function, and the pulse that sends of picking rate acquisition module at regular intervals calculates mileage, the speed of a motor vehicle etc. and handles in real time.In this device design process, use the timer/counter of central process unit, with the lasting record of the time gap of 0.2S and store car moving velocity value and car brakeing status signal.A down counter is set in addition is used for writing down the pulse count that speed sensor transmits in the corresponding time, be used to calculate the moving velocity of automobile.The GPG11 of central process unit can be set to the TCLK1 input, is connected to speed sensor.Speed formula is
; The pulse number of wheel revolutions one all sensor output is n, the vehicle pulse count f that speed sensor transmits in 0.2S; The travelled distance of battery-driven car can calculate through the pulse count that speed sensor in the statistics running time transmits.
It is main system memory that said memory module has been expanded a slice SDRAM, and a slice NORFlash is used for store program code, and a slice NandFlash is used to store running data.The address bus of S3C2410, data bus and control bus link to each other with NorFlash address bus, data bus and control bus respectively, and the nGCS0 of S3C2410 connects the chip selection signal of NorFlash.When memory module is used SDRAM as main system memory, use S3C2410 Memory Controller Bank6 memory set, the SDRAM sheet selects pin to connect the nGCS6 pin of S3C2410.The I/O0-I/O7 pin of NandFlash chip directly links to each other with the DATA0-DATA7 of the data bus of S3C2410A, sends address, order and data through data bus.
Said buzzer phone links to each other with central process unit, and main control module is according to the velocity information control buzzing sounding of gathering, and when speed was slow, buzzer phone was not sounded; When speed accelerated, it is big that the sound of buzzer phone becomes thereupon.Be used to point out the battery-driven car driver to note moving velocity on the one hand, be used to warn pedestrian or vehicle on the other hand and note dodging.Central process unit uses pwm signal to drive buzzer phone work through GPB0 IO mouth, and the GPB0 mouth is a multiplexing IO mouth, use it to get and be arranged to TOUT0 PWM output mode to him earlier.PWM (pulse width modulation) simply says it is one of a kind of converter technique, is to come control output voltage by changing pulse width, controls the buzzer phone sounding thereby control its output frequency through the change cycle.
This device needs+5V ,+3.3V, three kinds of power supplys of+1.8V are respectively central process unit, display module, data communication module, speed acquisition module and buzzer phone working power are provided.Multiple power supplies obtains through the method for step-down one by one; At first power supply on the battery-driven car is converted into+5V voltage through LM2675; The power supply of general+5V is converted into 3.3V voltage through the LT1764A_3V3 chip again, and 3.3V voltage is converted into 1.8V voltage through the TPS76718QD chip again.
Claims (4)
1. battery-driven car speed measuring device; It is characterized in that: comprise central process unit, speed acquisition module, display module and the power module that is used to supply power; Said speed acquisition module links to each other with central process unit; The speed signal that collects is sent to central process unit handle, the data after handling are shown through display module.
2. a kind of battery-driven car speed measuring device according to claim 1 is characterized in that: also comprise the memory module that is used to store data, said memory module links to each other with central process unit.
3. a kind of battery-driven car speed measuring device according to claim 1 and 2 is characterized in that: also comprise data communication module, said data communication module links to each other with central process unit.
4. a kind of battery-driven car speed measuring device according to claim 1 is characterized in that: also comprise buzzer phone, said buzzer phone links to each other with central process unit, is used to remind the user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203795U CN202130318U (en) | 2011-06-17 | 2011-06-17 | Speed measuring device for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203795U CN202130318U (en) | 2011-06-17 | 2011-06-17 | Speed measuring device for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202130318U true CN202130318U (en) | 2012-02-01 |
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ID=45519100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120203795U Expired - Fee Related CN202130318U (en) | 2011-06-17 | 2011-06-17 | Speed measuring device for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202130318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105644366A (en) * | 2016-03-23 | 2016-06-08 | 严松法 | Speed-limiting system for moped |
-
2011
- 2011-06-17 CN CN201120203795U patent/CN202130318U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105644366A (en) * | 2016-03-23 | 2016-06-08 | 严松法 | Speed-limiting system for moped |
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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: 20120201 Termination date: 20130617 |