CN204854761U - Odometer - Google Patents
Odometer Download PDFInfo
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- CN204854761U CN204854761U CN201520504217.6U CN201520504217U CN204854761U CN 204854761 U CN204854761 U CN 204854761U CN 201520504217 U CN201520504217 U CN 201520504217U CN 204854761 U CN204854761 U CN 204854761U
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- odometer
- hall switch
- pulse
- processor
- fixed band
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Abstract
The utility model provides an odometer, include: magnetic induction device includes along a plurality of magnets of the circumferencial direction evenly distributed of axis of rotation or wheel, hall sensor installs on the frame, including being used for the response magnet and output pulse's hall switch, with hall switch connects and the basis the treater of actual service life is calculated to the pulse number of hall switch output. The utility model provides an odometer, its mileage number that can counting vehicle traveles to simple to operate is applicable to any vehicle.
Description
Technical field
The utility model relates to a kind of odometer.
Background technology
Existing vehicle speed sensor technology mainly divides three classes: (1) photo-electric vehicle speed sensor: by rotating disk with holes, a light emitting diode, a phototriode as optical sensor forms, and light emitting diode shines the transmission and reception that photodiode realize light through the hole on rotating disk.(2) magneto-electric vehicle speed sensor: analog AC signal generator, produce AC signal, usually be made up of the magnetic core of band two binding posts and coil, gear one by one on magnetic group wheel will produce series of pulses one to one, the amplitude of output signal is directly proportional to the rotating speed that magnetic group is taken turns, the frequency size of signal finds expression in the rotating speed size of magnetic group wheel, thus draws the speed of a motor vehicle.
Existing product mainly divides two classes: dress market before the first kind, the i.e. vehicle speed sensor of former car configuration, speedometer and odometer, the speed pickup of former car usually and speedometer, mileometer separate, speed pickup is only responsible for producing vehicle speed pulse, speedometer acquisition pulse runs out travel speed, and mileometer accumulated pulse number calculates mileage.Fill market after Equations of The Second Kind, then fill market product and divide again two kinds, one is used to keep in repair and replaces former car sensor; Two is that installation is matching used to other vehicle-mounted product separately.
The defect of prior art:
(1) product filled before auto vendor, during damage, maintenance cost is high, trouble is installed, and most front dress product generally for security reason, does not open to the outside world, can not dock with third party's odometer related tool, and the speed sensor signal of some automobile does not directly input velometer and mileometer, is communicated by bus form, this just causes traditional taximeter cannot use these signals, must install new speed pickup additional, and some vehicle cannot be installed; The product of former car sensor is replaced in rear dress market for keeping in repair, defect is the same with former car.
(2) existing intelligent speed odometer is nearly all that employing 8 single-chip microcomputers and EEPROM store, because the arithmetic capability of 8 single-chip microcomputers is limited, the writing speed of EEPROM and restricted lifetime, for speed particularly low speed time, as during lower than 40km/h, velocity error is larger; And during for high speed, because EEPROM speed and life-span reason can not frequent operations, may do during parking power-off and lose a lot of mileage number, such produce market is positioned low-end applications.
(3) call a taxi software such as special train software, the share-car software of current trend can not receive the sensor signal of this two quasi-tradition, cause present software mileage calculation of calling a taxi very inaccurate, charge is chaotic, and existing vehicle speed sensor easily to be practised fraud replacing by user, in the occasion of charging with mileage, as taxi, special train, share-car etc., the interests of infringement consumer, taxi driver's cheating in the middle of reality, the phenomenon that passenger complains occurs repeatedly.
Utility model content
Based on above deficiency, the technical problems to be solved in the utility model is to provide a kind of odometer, and it can calculate the mileage number that vehicle travels, and easy for installation, is applicable to any vehicle.
For solving above technical matters, the utility model have employed following technical scheme:
A kind of odometer, comprising:
Magnetic-inductive device, comprises the equally distributed some magnets of circumferencial direction along rotation axis or wheel;
Hall element, is arranged on vehicle frame, comprise for respond to described magnet and export pulse Hall switch, to be connected with described Hall switch and to calculate the processor of distance travelled according to the pulse number that described Hall switch exports.
Described magnetic-inductive device also comprises annular fixed band, and described magnet is fixed on described fixed band, and described annular fixed band is arranged on rotation axis or wheel.
Described fixed band adopts rubber to make.
Described Hall switch is connected with the timer capture pin of described processor.
The shaping circuit to exporting pulse and carry out anti-interference process is also connected with between described Hall switch and described processor.
Described processor is also connected with storer.
Described storer is ferroelectric memory.
Described processor is outputed signal by the mode of wire communication or radio communication.
Described processor is 32 arm processors.
Adopt above technical scheme, the beneficial effect acquired by the utility model is:
1, the utility model odometer can obtain the umber of pulse of output when vehicle travels, and by the account form of recurrence interval, can improve speed and mileage calculation precision, greatly can improve velocity accuracy especially when low speed;
2, magnet is fixed on wheel or rotation axis by annular fixed band, easy for installation, and fixed band adopts the rubber of doughnut rank, can reach the corrosion resistant function of high-low temperature resistant;
3, storer adopts ferroelectric memory, there is read or write speed fast, the advantage of long service life, can write p.s. when storing mileage for several times or tire turn around write once, greatly improve mileage precision and resolution, and can not when parking power-off because more mileage number is lost too for a long time in write interval;
4, outputed signal by wired or wireless mode, can be connected with various fee register or the software APP that calls a taxi, have wide range of applications.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, technology of the present utility model is described in further detail:
Fig. 1 is the structural drawing that the utility model is had the records of distance by the log;
Fig. 2 is the structural drawing of the induction installation that the utility model is had the records of distance by the log;
Fig. 3 is the schematic block circuit diagram that the utility model is had the records of distance by the log.
Embodiment
As shown in Figure 1-Figure 3, the utility model provides a kind of odometer, comprises magnetic-inductive device 1 and Hall element 2, and magnetic-inductive device 1 comprises the equally distributed some magnets 11 of circumferencial direction along rotation axis or wheel; Hall element 2, is arranged on vehicle frame, comprise for respond to described magnet and export pulse Hall switch 21, to be connected with described Hall switch 21 and the pulse number exported according to described Hall switch calculates the processor 22 of distance travelled.
Magnetic-inductive device 1 also comprises annular fixed band 12, and magnet 11 is evenly fixed on annular fixed band 12, and annular fixed band 12 is fixed on rotation axis or wheel, and in the present embodiment, annular fixed band 12 is fixed on the rotation axis 3 of vehicle.Annular fixed band 12 expands into strip, and be provided with fixed orifice 121 in pairs between magnet 11 between two, according to the length of the girth cutting fixed band of automobile rotation axis or wheel during installation, and then the fixed band after cutting is made annular and on the rotation axis being fixed on vehicle or wheel.Described fixed band adopts rubber to make, and rubber selects the starting material of doughnut rank, to reach the functions such as high-low temperature resistant humidity is corrosion-resistant.By fixed magnets on annular fixed band, more annular fixed band is fixed on wheel or rotation axis, install more easy, and applicability is stronger.
The shaping circuit 23 to exporting pulse and carry out anti-interference process is also connected with between Hall switch 21 and processor 22.Described processor 22 is also connected with power supply 25 with ferroelectric memory 24.The utility model odometer uses ferroelectric memory to store data, has read or write speed fast, the feature of long service life.Common EEPROM or the writing speed of FLASH memory slow, the write life-span only has 100,000 ~ 1,000,000 times, and ferroelectric memory writing speed is more than 1000 times of EEPROM or FLASH, the write life-span is up to 1,000,000,000 times, can write p.s. when storing mileage for several times or tire turn around write once, greatly improve mileage precision and resolution, and can not when parking power-off because more mileage number is lost too for a long time in write interval.
Processor 22 can also communicate to connect with fee register or the software APP that calls a taxi, can by the mode of RS232 interface or the communication such as WIFI, bluetooth and pulse mode output signal, three kinds of modes all can be encrypted, allow user cannot reach the object of cheating by changing transducing signal, to be applicable to different application scenarios.
Processor 22 uses 32 arm processors, has powerful arithmetic capability, can greatly improve velocity survey scope, can realize the super large velocity survey scope of 0.0km/h ~ 1000.0km/h.
On the basis of technique scheme, the satellite positioning module such as the Big Dipper or GPS can be increased, or the car-mounted terminal of processor with band satnav is communicated to connect, the function of automatic correcting sensor parameter can be reached, greatly facilitate the usability of product, do not need manual synchronizing.
The principle of work of the utility model odometer is:
Automotive wheel rotates and drives magnet 11 to rotate, when magnet 11 turns to the position corresponding with Hall switch 21, Hall switch 21 exports pulse, pulse inputs the timer capture pin of 32 arm processors after carrying out anti-interference process by shaping circuit 23, calculate recurrence interval and pulse number by processor 22.Automobile's instant velocity computing method: set tire circumference as L rice, the umber of pulse that tire often turns 1 coil sensor generation is N, then the umber of pulse K=1000/ (L/N) of every kilometer, vehicle generation, because L and N is fixed value, therefore K is constant; Set the recurrence interval as P again, then frequency F=1/P; Then speed V=3600F/K=3600/ (PK).Method for Calculate Mileage: mileage equals umber of pulse divided by vehicle impulse ratio.Hall element 2 can calculate from installing to total accumulative mileage of vehicle traveling during product rejection and accumulated pulse number; And multiple single mileage and single accumulated pulse number can be calculated according to command request.The method that the speed of a motor vehicle uses the recurrence interval to calculate, can improve speed and mileage calculation precision, greatly can improve velocity accuracy especially when low speed, velocity accuracy can reach 0.1km/h, mileage operational precision can reach mileage number corresponding to 1 pulse, and this mileage number is less than 1 meter usually.
Cheating and preservation & testing: because the number being arranged on the magnet 11 on the rubber strip on rotation axis or wheel is fixing, it is also fixing for turning around 360 degree, so the pulse duty factor that Hall switch produces is fixing within the scope of permissible error, when microprocessor detects that pulse duty factor exceeds permissible error scope, if dutycycle becomes large, when namely measuring the speed of a motor vehicle than actual vehicle speed height, then illustrate that magnetic-inductive device may be revised cheating by car owner; If dutycycle diminishes, namely measure the speed of a motor vehicle lower than actual vehicle speed, then illustrate that magnetic-inductive device needs to safeguard.Microprocessor can exceed the situation of allowed band by wired or wireless instruction notification receiving end main frame dutycycle simultaneously, and as fee register, call a taxi APP etc.Radio communication or the wire communication of Hall element and Receiving Host communicate with enciphered data, as cracked, then need the instrument using specialty, and need expensive expense, so car owner can not pay expensive expense in order to practise fraud, lose more than gain.
The utility model odometer can prevent the mileage of taxi or other vehicle from practising fraud, Protection of consumer interests; Expand the application vehicle of sensor, can not can not installation rate sensor and change vehicle because of certain vehicle, save social resources, particularly encourage the overall situation of share-car in country under, can realize sharing fare according to mileage number, expense calculates fair.
Last it is noted that these are only preferred embodiment of the present utility model; be not limited to the utility model; although be described in detail the utility model with reference to embodiment; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; but it is all within spirit of the present utility model and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. an odometer, is characterized in that comprising:
Magnetic-inductive device, comprises the equally distributed some magnets of circumferencial direction along rotation axis or wheel;
Hall element, is arranged on vehicle frame, comprise for respond to described magnet and export pulse Hall switch, to be connected with described Hall switch and to calculate the processor of distance travelled according to the pulse number that described Hall switch exports.
2. odometer according to claim 1, is characterized in that: described magnetic-inductive device also comprises annular fixed band, and described magnet is fixed on described fixed band, and described annular fixed band is on rotation axis or wheel.
3. odometer according to claim 2, is characterized in that: described fixed band adopts rubber to make.
4. odometer according to claim 1, is characterized in that: described Hall switch is connected with the timer capture pin of described processor.
5. odometer according to claim 1, is characterized in that: be also connected with the shaping circuit to exporting pulse and carry out anti-interference process between described Hall switch and described processor.
6. odometer according to claim 1, is characterized in that: described processor is also connected with storer.
7. odometer according to claim 6, is characterized in that: described storer is ferroelectric memory.
8. odometer according to claim 1, is characterized in that: described processor is outputed signal by the mode of wire communication or radio communication.
9. the odometer according to any one of claim 1,6 or 8, is characterized in that: described processor is 32 arm processors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504217.6U CN204854761U (en) | 2015-07-13 | 2015-07-13 | Odometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504217.6U CN204854761U (en) | 2015-07-13 | 2015-07-13 | Odometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204854761U true CN204854761U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520504217.6U Expired - Fee Related CN204854761U (en) | 2015-07-13 | 2015-07-13 | Odometer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097460A (en) * | 2016-07-01 | 2016-11-09 | 北京聚利科技股份有限公司 | Taximeter |
| CN111006692A (en) * | 2019-11-29 | 2020-04-14 | 东风商用车有限公司 | Method for rapidly correcting vehicle speed and mileage of commercial vehicle instrument based on development of diagnostic instrument |
| CN111928871A (en) * | 2020-09-15 | 2020-11-13 | 深圳大学 | Precision magnetic Hall odometer |
| CN112432639A (en) * | 2019-08-24 | 2021-03-02 | 北京零偏科技有限责任公司 | Mileage wheel, mile wheel train device and underground pipeline positioning instrument provided with device |
| CN112895896A (en) * | 2021-02-03 | 2021-06-04 | 山东奥唯克智能科技有限公司 | Automatic control system and control method for oil-driven unmanned vehicle |
| CN113514061A (en) * | 2021-06-03 | 2021-10-19 | 北京自动化控制设备研究所 | Geomagnetic device-based high-speed rotation system movement speed calculation method and device |
-
2015
- 2015-07-13 CN CN201520504217.6U patent/CN204854761U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097460A (en) * | 2016-07-01 | 2016-11-09 | 北京聚利科技股份有限公司 | Taximeter |
| CN112432639A (en) * | 2019-08-24 | 2021-03-02 | 北京零偏科技有限责任公司 | Mileage wheel, mile wheel train device and underground pipeline positioning instrument provided with device |
| CN112432639B (en) * | 2019-08-24 | 2024-04-09 | 北京零偏科技有限责任公司 | Mileage wheel, mileage train device and underground pipeline positioning instrument with same |
| CN111006692A (en) * | 2019-11-29 | 2020-04-14 | 东风商用车有限公司 | Method for rapidly correcting vehicle speed and mileage of commercial vehicle instrument based on development of diagnostic instrument |
| CN111928871A (en) * | 2020-09-15 | 2020-11-13 | 深圳大学 | Precision magnetic Hall odometer |
| CN112895896A (en) * | 2021-02-03 | 2021-06-04 | 山东奥唯克智能科技有限公司 | Automatic control system and control method for oil-driven unmanned vehicle |
| CN113514061A (en) * | 2021-06-03 | 2021-10-19 | 北京自动化控制设备研究所 | Geomagnetic device-based high-speed rotation system movement speed calculation method and device |
| CN113514061B (en) * | 2021-06-03 | 2023-08-15 | 北京自动化控制设备研究所 | Geomagnetic device-based high-speed rotation system movement speed calculation method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151120 Address after: 305, 510665, 306, 137 light road, Guangzhou, Guangdong, Tianhe District Patentee after: GUANGZHOU GUOYEE ELECTRONIC TECHNOLOGY CO., LTD. Address before: 305, 510665, 306, 137 light road, Guangzhou, Guangdong, Tianhe District Patentee before: Xiao Jianhui |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20200713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |