CN201035029Y - Vehicle speed signal capturing machine for vehicle driving recorder - Google Patents
Vehicle speed signal capturing machine for vehicle driving recorder Download PDFInfo
- Publication number
- CN201035029Y CN201035029Y CNU2007200790744U CN200720079074U CN201035029Y CN 201035029 Y CN201035029 Y CN 201035029Y CN U2007200790744 U CNU2007200790744 U CN U2007200790744U CN 200720079074 U CN200720079074 U CN 200720079074U CN 201035029 Y CN201035029 Y CN 201035029Y
- Authority
- CN
- China
- Prior art keywords
- vehicle speed
- vehicle
- speed signal
- acquisition module
- signal acquisition
- 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
Landscapes
- Time Recorders, Dirve Recorders, Access Control (AREA)
Abstract
A vehicle speed signal collector for vehicle traveling data recorder belongs to intelligent traffic technique fields, which is composed by a holt hoop iron with multipole magnetic steel installed on the vehicle transmission shaft and a signal acquisition module installed on the vehicle chassis, the signal acquisition module comprises a giant magnetic resistor corresponding to the holt hoop iron magnetic steel and an A/D converter which is electrically connected with the giant magnetic resistor. The utility model has the advantages that the vehicle speed signal collector is not affected by other components, which can precisely acquire the relative vehicle speed signal when driving. The utility model is suitable for various vehicles driven by transmission shaft.
Description
Technical field
The utility model relates to the vehicle speed signal collector that a kind of automobile travel recorder is used.Belong to intelligent transportation detection technique field.
Background technology
Automobile travel recorder is the real-time watch device that present road safety administrative authority is used for writing down long-distance passenger and freight transportation vehicle running state.Existing automobile travel recorder mostly uses the mechanical sensor of being made up of rotor that has eight magnetic poles and Hall switch to obtain vehicle speed signal.The mechanical sensor rotor is installed on the follower gear of automobile gearbox, and the upper end links to each other with the speed of a motor vehicle/speedmeter cable.When the output shaft drive wheels of wheel box is rotated, the driven tooth of wheel box also drives the rotor sensor rotation, epitrochanterian eight magnetic poles are rotation synchronously also, Hall switch will carry out periodic switch motion under the effect of eight magnetic pole permanent magnets, rotor sensor whenever circles, Hall switch opens and closes 8 times, by 8 pulses of external circuit output.This pulse signal sends into that automobile travel recorder counts and computing, thereby obtains speed of a motor vehicle output.Find that according to road traffic accident investigation there is following shortcoming in the mechanical sensor on this follower gear that is installed in automobile gearbox:
1., when damaging, the wheel box follower gear skids or speedmeter cable when acutely rocking, this vehicle speed sensor will be affected and running that can not be stable, so that the pulse signal disorder of its output, therefore make the vehicle speed data of automobile travel recorder record, storage inconsistent with the actual speed of a motor vehicle, can not reflect vehicle actual travel situation at that time fully really, can accurately not provide objective basis for handling road traffic accident and eliminating safe hidden trouble.
2., the multipole magnet steel on this rotor sensor is long-term with the stator inner wall of sensor outside because the high speed rotating of rotor and mutual friction mutually, have more than is needed pulse signal disorder that magnet steel wearing and tearing or irregular the rocking of rotor how long will occur and sensor is exported.Cause the vehicle speed data of automobile travel recorder record, storage inconsistent, can not reflect vehicle actual travel situation at that time fully really with the actual speed of a motor vehicle.
3., pile up dust on this rotor sensor or other break flour just can not rotate rotor easily, sensor does not just have pulse signal to export like this.Cause the follower gear in the wheel box to damage when more serious.Both of these case all can cause Tachographs not have the vehicle speed data record.
The utility model content
The purpose of this utility model is the above-mentioned shortcoming that overcomes existing vehicle speed sensor, for automobile travel recorder provides a kind of vehicle speed signal collector that can not collect vehicle speed signal with accurately not leaking.
This vehicle speed signal collector is constituted by being installed in anchor ear that has multipole magnet steel on the truck drive shaft and the signal acquisition module that is installed on the automobile chassis, and described signal acquisition module is made of giant magnetoresistance device relative with the anchor ear magnet steel and the A/D converter that is electrically connected with the giant magnetoresistance device.During running car, the transmission shaft rotating band anchor ear and is rotated, multistage magnet steel on the anchor ear also rotates synchronously and produces synchronous rotating magnetic field, rotating magnetic field acts on the giant magnetoresistance device of signal acquisition module, the giant magnetoresistance device produces the electric signal that changes synchronously, and this electric signal passes to automobile travel recorder through the square-wave pulse signal that the high-performance A/D converter converts standard to.
Compared with the aforementioned existing similar products, this vehicle speed signal collector has following advantage:
1., fully be not subjected to the influence of other parts, as long as automobile will collect corresponding vehicle speed signal accurately travelling.Excellent working performance, accuracy height, good stability.
2., simple in structure, easy for installation, the installation site changes each parts circuit of former car flexibly and not.
3., dustproof, waterproof, vibration resistance, moisture-proof heat, not affected by environment, long service life.
4., be fit to various transmission shafts and drive the vehicle use.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Embodiment
As shown in Figure 1, this vehicle speed signal collector is made of the signal acquisition module that is installed in the anchor ear that has multipole magnet steel 23 on the truck drive shaft 1 and be installed on the automobile chassis 4, and described signal acquisition module is made of giant magnetoresistance device 5 relative with anchor ear magnet steel 2 and the A/D converter 6 that is electrically connected with the giant magnetoresistance device.Giant magnetoresistance device 5 is selected import RM type giant magnetoresistance device or MTG type giant magnetoresistance device for use.A/D converter 6 selects for use army's grade chipset of U.S. national company to become.7 is automobile travel recorder among the figure.
Claims (1)
1. vehicle speed signal collector that automobile travel recorder is used, it is characterized in that described signal picker is constituted by being installed in anchor ear that has multipole magnet steel on the truck drive shaft and the signal acquisition module that is installed on the automobile chassis, described signal acquisition module is made of giant magnetoresistance device relative with the anchor ear magnet steel and the A/D converter that is electrically connected with the giant magnetoresistance device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200790744U CN201035029Y (en) | 2007-04-10 | 2007-04-10 | Vehicle speed signal capturing machine for vehicle driving recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200790744U CN201035029Y (en) | 2007-04-10 | 2007-04-10 | Vehicle speed signal capturing machine for vehicle driving recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201035029Y true CN201035029Y (en) | 2008-03-12 |
Family
ID=39195919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200790744U Expired - Fee Related CN201035029Y (en) | 2007-04-10 | 2007-04-10 | Vehicle speed signal capturing machine for vehicle driving recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201035029Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962581A (en) * | 2018-09-25 | 2019-07-02 | 制旋科技（深圳）有限公司 | An external rotary resolver for electric vehicles |
-
2007
- 2007-04-10 CN CNU2007200790744U patent/CN201035029Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962581A (en) * | 2018-09-25 | 2019-07-02 | 制旋科技（深圳）有限公司 | An external rotary resolver for electric vehicles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101567655B (en) | Control method of IPM electromotor for driving electric motor car | |
| CN201035029Y (en) | Vehicle speed signal capturing machine for vehicle driving recorder | |
| CN204142746U (en) | The speed encoder mounting structure of a kind of AGV | |
| CN210074852U (en) | Railway wagon axle induction power generation device | |
| CN203941183U (en) | Six passage locomotive shaft-end speed probes | |
| CN110212626B (en) | Axle induction power generation device for railway wagon | |
| CN201637755U (en) | Vehicle speed sensor | |
| CN203352376U (en) | Motor integrated with speed reduction and differential mechanism | |
| CN2906557Y (en) | Contact-less photoelectric train speed sensor | |
| CN201181217Y (en) | Magnetic inductive speedometer | |
| CN203785686U (en) | Odometer specially for electric vehicle | |
| CN207197543U (en) | A kind of wheel hub motor encoder | |
| CN102680724B (en) | Two-freedom-degree speed measurement mechanism and speed measurement method for mobile robot car | |
| CN202978574U (en) | Planet transmission combined motor for electric car | |
| CN201021120Y (en) | Hybrid double-power electric automobile | |
| CN202004594U (en) | Gear reduction type electric bicycle motor with built-in torque sensor | |
| CN203078321U (en) | Digital instrument of motorcycle | |
| CN211554045U (en) | High-precision wheel speed reading structure | |
| CN203214258U (en) | Spontaneous power generation device of motor vehicle | |
| CN2212202Y (en) | Sensor of vehicle speed | |
| CN2204422Y (en) | Speed sensor | |
| CN102882305A (en) | One-way clutch motor | |
| CN201548553U (en) | Optical fiber vehicle speed sensor | |
| CN2279587Y (en) | Electronic sensor of speed odometer for vehicle | |
| CN1818568A (en) | Photoelectric speed monitoring method and device for train with magnetic transmission |
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: 20080312 Termination date: 20120410 |