CN201181216Y - Electronic intelligent control instrument of motorcycle - Google Patents
Electronic intelligent control instrument of motorcycle Download PDFInfo
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- CN201181216Y CN201181216Y CNU2007200947651U CN200720094765U CN201181216Y CN 201181216 Y CN201181216 Y CN 201181216Y CN U2007200947651 U CNU2007200947651 U CN U2007200947651U CN 200720094765 U CN200720094765 U CN 200720094765U CN 201181216 Y CN201181216 Y CN 201181216Y
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Abstract
An electronic intelligent control instrument of motorcycles, which belongs to the field of instrument, consists of an electronic sensor, an LED digital display, three singlechips, three ICs, a power supply and a circuit board. The electronic intelligent control instrument can simultaneously digitally display the speed, the accumulative mileage and the rotation speed of the motor, and has the functions of automatic engine oil replacement prompt in running-in period, automatic periodic maintenance prompt, automatic overdrive prompt, automatic overdrive control and rotation speed simulation and display. The sensor and the instrument section have no mechanical contact and abrasion and no conventional transmission flexible shaft. The instrument has the advantages of stable performance, high accuracy, good reliability, high interference resistance, and long service life, and more prompt alarm and control functions can be added according to the use requirement.
Description
Technical field:
The utility model belongs to instrument field.
Background technology:
Traditional speed mileometer and tachometer gage all are the mechanical type instrument, all by driving snake signal is sent in the mechanical pointer instrument by counting gear, this instrument that is made of mechanical gear, flexible axle, hairspring, pointer etc. all needs frequent maintaining, cleans and refuels.Need the good lubricated normal use that could guarantee this mechanical type instrument, especially counting gear in the front-wheel and driving snake, the easiest damage, lubricating oil very easily solidifies in cold winter in the north, thereby cause the excessive wear of counting gear, locking and flexible axle twist off.Pointer instrument also exists the indication out of true, directly perceived, reaction velocity waits shortcoming slowly.
The mechanical type instrument more can not be accomplished overspeed alarming, functions such as the automatic prompting of maintaining.
At present, some electronic odometers are also arranged, though instrument has partly been made the instrument of electronic type, but also there are not thoroughly to break away from traditional counting gear and flexible axle aspect the signal obtaining, still to not obtain turn signal though some has flexible axle yet, so just thoroughly not break away from Mechanical Contact and mechanical wear yet with the counting gear in the front-wheel.
Summary of the invention:
In order to address the above problem, the utility model provides a kind of and does not adopt the direct mechanical contact and the motorcycle electric intelligent control instrument of employing digital and electronic Based Intelligent Control.
The utility model is equipped with the inductive head of sensor on wheel hub cover, on the wheel shaft of corresponding inductive head sensor block is installed, and its circuit theory is:
A, sensor circuit form inductosyn by inductive head and TCA305A integrated circuit and peripheral circuit;
The front-wheel turn signal that 5 pin of b, sensor TCA305A are sent, after the external interrupt P3.2 of mileage single-chip microcomputer interface INT012 pin receives, calculate the result again by P2 mouth carry-out bit sweep signal by mileage scm software program, the P0 mouth is exported 7 segment encodes and is sent charactron LED to show;
The 7 pin front-wheel turn signals that c, sensor TCA305A send, send into speed single-chip microcomputer external interrupt interface INT0 and INT1 i.e. 12 pin and 13 pin simultaneously, after calculating actual speed by speed scm software program again, export 7 segment encodes by P2 mouth carry-out bit sweep signal P0 mouth again, send into charactron LED and show actual vehicle speed.
Engine rotational speed signal circuit theory of the present utility model is: the tach signal of engine takes out from the voltage winding of magneto generator or the first utmost point of high-voltage ignition coil, after coupling capacitor C and dropping resistor R1 step-down, send into 10 pin of hardware divider integrated circuit CD4040,4 pole magnetoelectric machines are by the 6 pin output frequency division signals of CD4040; 8 pole magnetoelectric machines are by 2 pin output frequency division signals, signal behind the frequency division can directly be sent into 12 pin and 13 pin of single-chip microcomputer, single-chip microcomputer adopts external definition, crystal oscillator is after to be 24MHZ by the software program of single-chip microcomputer calculate actual speed, by P2 mouth and scanning of P0 mouth carry-out bit and segment encode, demonstrate rotating speed by the LED charactron again.
Advantages such as the new shape of this practicality has stable performance, shows accurately, need not safeguard, the long service life fault is few.
Description of drawings:
Fig. 1 is the utility model sensor sensing head and sensor block mounting structure synoptic diagram;
Fig. 2 is that the utility model circuit theory is always schemed.
Embodiment:
The utility model is equipped with the inductive head 1 of sensor on wheel hub cover, sensor block 2 is installed on the wheel shaft of corresponding inductive head 1, circuit part mainly comprises initialization module, speed mileage computing module, data memory module, mileage speed display control module, video data processing module, LED charactron display module, binary-coded decimal modular converter etc.
Its circuit theory is:
A, sensor circuit form inductosyn by inductive head 1 and TCA305A integrated circuit and peripheral circuit;
The front-wheel turn signal that 5 pin of b, sensor TCA305A are sent, after the external interrupt P3.2 of mileage single-chip microcomputer interface INT012 pin receives, calculate the result again by P2 mouth carry-out bit sweep signal by mileage scm software program, the P0 mouth is exported 7 segment encodes and is sent charactron LED to show;
The 7 pin front-wheel turn signals that c, sensor TCA305A send, send into speed single-chip microcomputer external interrupt interface INT0 and INT1 i.e. 12 pin and 13 pin simultaneously, after calculating actual speed by speed scm software program again, export 7 segment encodes by P2 mouth carry-out bit sweep signal P0 mouth again, send into charactron LED and show actual vehicle speed.
The induction pick-up of this speed mileometer can convert detected front-wheel turn signal to square wave and directly import in the single-chip microcomputer, calculate actual speed and mileage by single-chip microcomputer then, mileage with gained stores in the external data memory again, and accurately demonstrates the mileage of surveying and speed by the LED Digital module.Speed is shown as three figure places, and mileage is decimals of five integers, amounts to six figure places and can be accurate to 0.1km.Tachometer gage is shown as three figure places, and comprising a decimal, * 1000 change.Can be accurate to 100 rev/mins.
Engine rotational speed signal circuit theory of the present utility model is: the tach signal of engine takes out from the voltage winding of magneto generator or the first utmost point of high-voltage ignition coil, after coupling capacitor C and dropping resistor R1 step-down, send into 10 pin of hardware divider integrated circuit CD4040,4 pole magnetoelectric machines are by the 6 pin output frequency division signals of CD4040; 8 pole magnetoelectric machines are by 2 pin output frequency division signals, signal behind the frequency division can directly be sent into 12 pin and 13 pin of single-chip microcomputer, single-chip microcomputer adopts external definition, crystal oscillator is after to be 24MHZ by the software program of single-chip microcomputer calculate actual speed, by P2 mouth and scanning of P0 mouth carry-out bit and segment encode, demonstrate rotating speed by the LED charactron again.
The sensor of being made up of integrated circuit TCA305A and inductive head and peripheral circuit induces the signal of wheel from front hub, this signal is a square-wave signal that single-chip microcomputer can directly utilize, send into then and calculate speed and mileage among the single chip computer AT 89C52, result after will being calculated by single-chip microcomputer again sends into the LED show circuit and carries out the numeral demonstration, also sending into simultaneously external storage 24C02 stores, in order to can also normally showing accumulative mileage after the outage, clearly observe travel speed and mileage in order to make things convenient under steam, the speed mileage is designed to show simultaneously that respectively single-chip microcomputer also adopts two single-chip microcomputers to finish the calculating and the control of speed and mileage respectively respectively.So just can establish speed mileage switch no longer in addition, unclamp handlebar under the state that just can avoid running at high speed again and remove to press speed and mileage switch.
Oil change at regular intervals prompting in new car running-in period and the use: single-chip microcomputer P1.0 mouth will have signal to output to transistor base when new car drives to 300 kilometers 600 kilometers 1000 kilometers.Make the triode conducting, make more change engine oil of its luminous prompting thereby light the prompting light emitting diode.Behind change engine oil more, press the recovery button warning light and extinguish, after running-in period, will be once every 1,000 kilometers promptings.
Speed per hour prompting and hypervelocity control, the too high accident of very easily travelling of travel speed.The utility model has been set up three utmost point speed per hours prompting warning function, green prompting when adularescent light prompt speed per hour has reached 60 kilometers, 80 kilometers when speed per hour is 60 kilometers, and speed per hour has the red light prompting to report to the police when being 100 kilometers, also have the sound equipment prompting simultaneously.The prompting human pilot drives with caution, the hypervelocity control function: this function is that the control chip of velometer will be exported an overspeed signal when surpassing speed per hour pre-set before travelling, and this signal is by triode will light a fire trigger and ground short circuit.Make engine kill, the speed of a motor vehicle will descend rapidly.When dropping to the predefined speed of a motor vehicle, the speed of a motor vehicle can under the inertia that travels of car, rekindle engine again, in case the speed of a motor vehicle is higher than the setting speed per hour once more.Engine will stop working once more, and this has just controlled the speed of a motor vehicle effectively.And remind the driver to note travel speed and safety.
Engine speed indicator adopts single-chip microcomputer and LED numeral to show equally and finishes, and the rotating speed demonstration shows three-figure rotating speed with three LED charactrons.Tach signal can just take out extremely from magneto generator voltage winding or high-tension ignition winding, pass through step-down again, every directly, send into again behind the hardware divider in (12 pin and 13 pin) of single-chip microcomputer, go out the rotating speed of engine according to the frequency computation part of magnetic motor for motorcycle voltage, simulating rotating speed simultaneously in addition shows, simulation shows the display of being made up of a plurality of light emitting diodes, be that speed according to rotating speed changes, the diode of lighting when rotating speed is low is few, the diode of then lighting when rotating speed is high is also many, and is just similar with the variation of pointer, is not direct display digit.
Power unit of the present utility model is a two-stage voltage stabilizing anti-jamming power-supply, and the power supply of general motorcycle is 12V all, and the power supply of single-chip microcomputer generally all is that the 5V voltage phase difference is bigger, if only use the voltage stabilizing of one-level three terminal regulator, performance is with instability, and antijamming capability is also poor, so adopt the two-stage voltage stabilizing.It is 7805 three-terminal voltage-stabilizing power supplys that first order stabilized voltage supply adopts the 7809 three-terminal voltage-stabilizing second level, adopts the secondary stabilized voltage supply to work under higher temperature for a long time.
Because also there are a lot of interference sources in the electric system of motorcycle, the utility model has also been taked anti-interference method, and the loudspeaker on the motorcycle are exactly a very strong interference source and have two loudspeaker of high bass simultaneously, and the frequency of two loudspeaker is also different.So all will incorporate the electric capacity of one 0.1 microfarad at the both ends of power of every single-chip microcomputer, the both ends of power of external memory storage 24C02 is the electric capacity of necessary one 0.1 microfarad in parallel also, the both ends of power of sensor also all needs the electric capacity of 0.1 microfarad in parallel, disturbs that will distinguish the interference of loudspeaker or the interference of bass horn if also exist.If the interference of loudspeaker just needs the electric capacity of low capacity more in parallel, instrument ability operate as normal and be not subjected to the interference of loudspeaker like this.
The inductive head 1 of sensor is installed on the front wheel hub cap in Fig. 1, the end face of sensor sensing head 1 will produce a square-wave signal at the output terminal of integrated circuit TCA305A once there is metal sensor block 2 to skim over, this square-wave signal can directly be received by single-chip microcomputer AT89C52 and utilize, inductive head 1 end face and the metal sensor block 2 that skims over have the distance of 1mm, do not contact mutually, do not produce friction and wear, metal sensor block 2 be any metal all can, this can be same metal material with front hub just.Be convenient to repacking and production.
5 pin of single-chip microcomputer TCA305A and 6 pin in Fig. 2, promptly the P1.4 of P1 mouth and P1.5 interface are connected to an E
2Prom memory 24C02, P1.4 and P1.5 interface control store deposit taking-up in.12,13 pin are P3.2, and the P3.3 interface is the outer interrupting input end of count signal, and P0 mouth and P2 mouth are used for the segment encode and the scanning output of seven sections light-emitting diode displays.Remove the interface P1 and the P3 interface that have taken and also remain a part of interface outward, we just can utilize these interfaces to finish overspeed alarming and maintaining is pointed out automatically.
Mileage and speed adopt two single-chip microcomputers respectively, show mileage and speed respectively simultaneously in an instrument.Be convenient to observation speed and mileage in running at high speed, come operating speed mileage switch when avoiding running at high speed again.
Front-wheel turn signal by 5 pin of sensor TCA305A are sent after the external interrupt P3.2 of mileage single-chip microcomputer interface INT012 pin receives, calculates the result again by P2 mouth carry-out bit sweep signal by mileage scm software program.The P0 mouth is exported 7 segment encodes and is sent charactron LED to show.Accumulative mileage can show that a decimal is accurate to hundred meters.After writing all over automatically return-to-zero again from New count.
Speed also is another road (7 pin) front-wheel turn signal of being sent by same sensor TCA305A, sends into speed single-chip microcomputer external interrupt interface INT0 and INT1 i.e. 12 pin and 13 pin simultaneously.After calculating actual speed by speed scm software program again, export 7 segment encodes by P2 mouth carry-out bit sweep signal P0 mouth again, send into charactron LED and show actual vehicle speed.
Engine speed indicator by one independently instrument show.The tach signal of engine takes out from the voltage winding of magneto generator or the first utmost point of high-voltage ignition coil, after coupling capacitor C and dropping resistor R1 step-down, sends into 10 pin of hardware divider integrated circuit CD4040, and 4 pole magnetoelectric machines are by the 6 pin output frequency division signals of CD4040; 8 pole magnetoelectric machines are by 2 pin output frequency division signals, signal behind the frequency division can directly be sent into 12 pin and 13 pin of single-chip microcomputer, single-chip microcomputer adopts external definition, crystal oscillator is after to be 24MHZ by the software program of single-chip microcomputer calculate actual speed, by P2 mouth and scanning of P0 mouth carry-out bit and segment encode, demonstrate rotating speed by the LED charactron again.Rotating speed transfers unit to thousand, after thousand commentaries on classics decimal is arranged, and can be accurate to 100 changes.The highest demonstration more than ten thousand rev/mins.The tachometer gage part also is provided with simulation simultaneously and shows, promptly when refueling rapidly, rotating speed news speed rises, numeral fast-changing also have in addition simultaneously one row light emitting diode luminous successively, the light emitting diode that the rotating speed height is then lighted is just many, the low light emitting diode of lighting of rotating speed is just few, with bending of change in rotational speed, has increased the interest of tachometer gage.
More change engine oil prompting, when the new car P1.0 interface of single-chip microcomputer that travels 300,600,1000 kilometers the time will be exported the base stage of a high level to triode, make triode 9013 conductings, the negative pole of the collector sending and receiving optical diode of triode, the positive pole of the grounded emitter of triode (power cathode) diode connects positive source, when single-chip microcomputer when the milimeter number of change engine oil more arrives, just there is a high level output to make the triode conducting at the P1.0 mouth, diode also conducting is simultaneously lighted luminously, sends cue.
Changing a machine oil every 1000 kilometers after running-in period also will be reminded by light emitting diode.
To finish prompting by the P1.3 interface every 4000 kilometers maintainings.The method of finishing is identical with said method.
Speed per hour is reported to the police and is provided with three grades of alarm velocity, and three grades of 60km, 80km, 100km have reached 60km by white light-emitting diode prompting speed in the time of in speed reaches 60km.When 80km, point out by green LED.When speed reaches 100 kilometers, there is red light emitting diodes to send the ruddiness prompting.And also have sound equipment to point out simultaneously.
When speed arrives 60km, the P1.0 mouth of single-chip microcomputer will be exported a cue, make the triode saturation conduction, and white light-emitting diode is lighted.By P1.1 mouth output signal, light a green LED during 80km, then export alerting signal when the prompting speed per hour has reached 80km, 100km by the P1.2 mouth by the saturation conduction of triode.Light red light emitting diodes prompting speed by the triode conducting and reached 100 kilometers/hour.The news Chinese percussion instrument in parallel with light emitting diode also sends the sound equipment prompting simultaneously.
The hypervelocity control function: prompting during overspeed signal 60 kilometers by P1.0 mouth output cue.80km is by the P1.1 mouth, and 100km is by P1.2 mouth output overspeed alarm signal.When hypervelocity control, can earlier the toggle switch that is connected to the P1.1 mouth be dialled to " control " end, this just makes the signal of speed of a motor vehicle single-chip microcomputer output when reaching 80km turn to another control triode, the grounded emitter of this triode by toggle switch.Collector contact fire trigger, but triode is the engine normal ignition that oppositely ends at ordinary times, in case triode 9012 saturation conductions when single-chip microcomputer P1.1 mouth is exported a low level when speed per hour surpasses 80km, this just will light a fire trigger pip and ground short circuit.Make the igniting controllable silicon lose trigger pip and stop working, the speed of a motor vehicle will slow down gradually, the flame-out of engine also more clearly reminded the human pilot speed of a motor vehicle to reach the max. speed of setting, should be in deceleration, when the speed of a motor vehicle descends gradually, single-chip microcomputer P1.1 mouth is exported a high level and is made triode end igniting to recover normal when being lower than the 80km of setting, engine is lighted engine again under the inertia effect that travels, engine will stop working once more if exceed the speed limit once more, the such speed of 80km that just makes the speed of a motor vehicle can not exceed setting just is under control, and 80km, 100km all have identical control function.The sound equipment prompting is also arranged in the time of 100 kilometers simultaneously.
If the control toggle switch is not dialled to " control " end, and still at " prompting " end, then has only prompt facility, also can not stop working during hypervelocity, and have only to dial the flame-out function of hypervelocity can be arranged just behind " control " end.
All be respectively equipped with function conversion toggle switch at 80km, 100km, can set the control speed of a motor vehicle respectively.Human pilot can be set the control speed of a motor vehicle according to s own situation and category of roads, thereby avoids the accident of travelling that should not take place.
Software systems
Data handling procedure:
The mileometer software design is to multiply by the pulse number of every circle according to the girth of front-wheel in the number of turns of accumulative total 100 meters time of whenever travelling, and after having added up 100 meters pulse numbers that produced, calculation procedure will and add 1 to upper carry, software promptly in view of the above principle write.
The turn signal of front-wheel is exported the square wave that single-chip microcomputer can directly utilize after handling through sensor TCA305A, and the P3.2 interface (INT0) that this square-wave pulse is added to single-chip microcomputer provides effective input signal for single-chip microcomputer calculates mileage.After single-chip microcomputer detects P3.2 interface (12 pin) input is arranged, the mileage counting procedure interrupts 0 and realizes adding 1 counting with outer, earlier the input signal pulse is temporary in the 20H unit, reach 100 meters required pulse numbers that preset when count pulse after, again with the 20H zero clearing, and add with carry 1.And then as calculated, after the conversion of storage, binary-coded decimal and the data processing, last just can in the decimal place in the display that shows the charactron composition, add 1, promptly demonstrate the 0.1km mileage, deposit result of calculation in external memory storage 24C02 simultaneously after, outage back data can not lost yet, will long preservation.
Continuous input along with the front-wheel pulse, mileage counting procedure constantly clear 0 and add with carry one, the output demonstration also constantly adds one, promptly add the 0.1km maximum and can be added to demonstration 99999.9km, degree of accuracy can reach 0.25% behind full 99999.9 kilometers of meter, system begins to count again and continues to show mileage with automatic return-to-zero.
Velocity process:
Speed is to multiply by the front tyre girth with the one used time of circle of front-wheel revolution to calculate, and the signal pulse of speed is also taken from same sensor TCA305A.
Counter T1 is by outer interruption 1 input control signal, timing begins during high level, outer interruption 1 service routine is used to handle the chronometric data after front-wheel rotates a circle, when zone bit (00H) is 1, illustrate that counter overflows, put into maximum time value (#0FFH) when zone bit is 0, the value of counting unit (TL1, TH1,6CH, 6DH) is put into the 68H-6BH unit.Send binary-coded decimal conversion to send display module to show at last as calculated, show three figure places altogether, the highlyest be shown to hundred kilometers positions.
The same same program of rotating speed software systems and speed.Different is that engine speed is higher, the calculated rate that exceeds software, so behind the voltage tach signal that the voltage winding takes out, to use hardware divider earlier, frequency division adopts AT89C52 with integrated circuit CD4040 single-chip microcomputer, crystal oscillator is also voltage reduction, the rotating speed applied signal voltage of tach signal must be generally 8-12V before the 24MHZ hardware divider, after can connecting with 15K resistance R 1 with 0.1 microfarad capacitor C, step-down inserts input end 10 pin of CD4040, signal behind the 6 pin output frequency divisions is connected to 12 pin, 13 pin of single chip computer AT 89052.And 100K resistance R of indirect 2 resistance R 2 other end ground connection of connecting with resistance R 1 in capacitor C.Form a reduction voltage loop.
After tach signal passes through hardware divider, after P3.2 interface (INT0) P3.3 (INT1) interface of delivering to single-chip microcomputer by 6 pin of CD4040 detects the input signal of P3.2 and P3.3 as single chip computer AT 89C52, also, change through binary-coded decimal again by after T0 and the computing of T1 interrupt routine.Send display routine to be shown as three figure places at last by the LED charactron.Wherein show promptly that for units, units need * 1000 decimals 100 change before decimal, the decimal, promptly being accurate to 100 changes.
Claims (2)
1, a kind of motorcycle electric intelligent control instrument is characterized in that: the inductive head (1) of sensor is installed on wheel hub cover, sensor block (2) is installed on the wheel shaft of corresponding inductive head (1),
A, sensor circuit form inductosyn by inductive head (1) and TCA305A integrated circuit and peripheral circuit;
The front-wheel turn signal that 5 pin of b, sensor TCA305A are sent, after the external interrupt P3.2 of mileage single-chip microcomputer interface INT012 pin receives, calculate the result again by P2 mouth carry-out bit sweep signal by mileage scm software program, the P0 mouth is exported 7 segment encodes and is sent charactron LED to show;
The 7 pin front-wheel turn signals that c, sensor TCA305A send, send into speed single-chip microcomputer external interrupt interface INT0 and INT1 i.e. 12 pin and 13 pin simultaneously, after calculating actual speed by speed scm software program again, export 7 segment encodes by P2 mouth carry-out bit sweep signal P0 mouth again, send into charactron LED and show actual vehicle speed.
2, motorcycle electric intelligent control instrument according to claim 1, it is characterized in that: the engine rotational speed signal circuit theory is: the tach signal of engine takes out from the voltage winding of magneto generator or the first utmost point of high-voltage ignition coil, after coupling capacitor C and dropping resistor R1 step-down, send into 10 pin of hardware divider integrated circuit CD4040,4 pole magnetoelectric machines are by the 6 pin output frequency division signals of CD4040; 8 pole magnetoelectric machines are by 2 pin output frequency division signals, signal behind the frequency division can directly be sent into 12 pin and 13 pin of single-chip microcomputer, single-chip microcomputer adopts external definition, crystal oscillator is after to be 24MHZ by the software program of single-chip microcomputer calculate actual speed, by P2 mouth and scanning of P0 mouth carry-out bit and segment encode, demonstrate rotating speed by the LED charactron again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200947651U CN201181216Y (en) | 2007-12-12 | 2007-12-12 | Electronic intelligent control instrument of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200947651U CN201181216Y (en) | 2007-12-12 | 2007-12-12 | Electronic intelligent control instrument of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201181216Y true CN201181216Y (en) | 2009-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200947651U Expired - Fee Related CN201181216Y (en) | 2007-12-12 | 2007-12-12 | Electronic intelligent control instrument of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201181216Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878128A (en) * | 2017-12-13 | 2018-04-06 | 上海为彪汽配制造有限公司 | Guarantee to keep in good repair writing system and record the data acquisition device of tire pressure monitor measurement information |
| CN108891516A (en) * | 2018-07-17 | 2018-11-27 | 南京金城机械有限公司 | A kind of instrument that screen backlight color can be converted with speed |
-
2007
- 2007-12-12 CN CNU2007200947651U patent/CN201181216Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878128A (en) * | 2017-12-13 | 2018-04-06 | 上海为彪汽配制造有限公司 | Guarantee to keep in good repair writing system and record the data acquisition device of tire pressure monitor measurement information |
| CN107878128B (en) * | 2017-12-13 | 2024-02-27 | 上海为彪汽配制造有限公司 | Warranty write-in system and data acquisition device for recording measurement information of tire pressure monitor |
| CN108891516A (en) * | 2018-07-17 | 2018-11-27 | 南京金城机械有限公司 | A kind of instrument that screen backlight color can be converted with speed |
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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: 20090114 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |