CN104296773A - Electronic type odometer sensor for commercial vehicle - Google Patents
Electronic type odometer sensor for commercial vehicle Download PDFInfo
- Publication number
- CN104296773A CN104296773A CN201410558891.2A CN201410558891A CN104296773A CN 104296773 A CN104296773 A CN 104296773A CN 201410558891 A CN201410558891 A CN 201410558891A CN 104296773 A CN104296773 A CN 104296773A
- Authority
- CN
- China
- Prior art keywords
- article
- output terminal
- branch road
- hall sensing
- module
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses an electronic type odometer sensor for a commercial vehicle. The electronic type odometer sensor for the commercial vehicle comprises a power supply module and a Hall induction module which is used for inducing field intensity variation generated by the rotation of an induction target wheel, wherein the power supply module is connected with the Hall induction module; the output end of the Hall induction module is connected with a signal processing module and the output end of the signal processing module is used as an output driving module to be connected with a whole vehicle instrument; a high-resolution field intensity peak value detection unit is arranged in a Hall induction IC and an overturning threshold point of the Hall induction IC can be determined in a self-adaptive manner, so that the field intensity variation of a tooth crest and a tooth root, caused by the Hall induction IC under the condition that the target wheel is eccentric, can be accurately induced, and the precision and the accuracy of the sensor are improved; and meanwhile, the Hall induction IC is internally provided with a low pass filter so that the interference rejection of the Hall induction IC is improved.
Description
Technical field
The invention belongs to automobile sensor field, particularly relate to a kind of commercial car electronic odometer sensor.
Background technology
Current domestic commercial vehicle market generally still uses the mechanical type master of earlier technique, follower structure kilometer sensor, compared with electronic odometer sensor, this sensor construction is simple, cost is low, but because long-time mechanical drive causes tool to wear and tear, this wearing and tearing can cause sensor sensing inaccurate, serious meeting causes sensor directly to lose efficacy, car load instrument shows without the speed of a motor vehicle, and along with commercial car (especially highway haulage vehicle, as engineering machinery vehicle) to the raising of sensor request for utilization and the development of automotive electronic technology, switch the trend that Non-contact electronic kilometer sensor is market development.
The principle of work of electronic odometer sensor is generally divided into two kinds, Hall type induction type and coil form induction type, both work essence is all motivate simulating signal by electromagnetic induction, the former needs to use Hall type sensitive element, this Element Technology threshold is low, manufacturer is more, but the element produced at present is difficult to meet commercial car request for utilization in the technical indicator such as temperature, vibration; Coil form structure is simple, can directly in market purchasing or processing voluntarily, the production technology of coil directly determines reliability and the accuracy of its induction, manufacturer's two kinds of structures of current electronic odometer sensor have and relate to, but from existing market reaction, the environment for use in commercial car does not all reach good effect.
Mostly be the kilometer sensor adopting Hall type sensitive element in the market, the B of the Hall switch in this sensor operationally by setting
oP(Operate Point working point) and B
rP(Release Point point of release) judges that the change of field intensity produces the upset of signal, but because the external disturbance factors such as car load vibration, environment temperature, electromagnetic interference (EMI) may produce disturbance to the field intensity of sensitive element induction, sensor sensing is caused to lose efficacy, instrument display is inaccurate, and accumulative mileage has error.
Summary of the invention
A kind of commercial car electronic odometer sensor that the present invention proposes, mate based on the installation of Fa Shite wheel box, precisely can judge that transmission internal target wheel rotates, improve the interference free performance of sensor, by the matching test with existing market main flow instrument, good result of use can be reached.
To achieve these goals, the technical solution used in the present invention is: a kind of commercial car electronic odometer sensor, the hall sensing module comprising power module and change for the field intensity that inductive target wheel rotates generation, described power module connects hall sensing module, the output terminal of hall sensing module is connected with signal processing module, and the output terminal of signal processing module connects car load instrument as output driver module;
Described power module comprises power supply VCC, power supply VCC connects the input end of commutation diode D1, the output terminal of commutation diode D1 is divided into three branch roads, Article 1, branch road is by electric capacity C1 ground connection, the input end of Article 2 branch road contact resistance R1, the output terminal of resistance R1 connects stake resistance C2 respectively, the base stage of ground connection Zener diode regulator D2 and triode emitter follower Q1, the collector of Article 3 branch road connecting triode emitter follower Q1, the emitter-base bandgap grading output terminal of triode emitter follower Q1 comprises three branch roads, Article 1, branch road is by electric capacity C3 ground connection, Article 2 branch road is as pull-up power supply V
outoutput terminal, Article 3 branch road by series connection resistance R3 and resistance R4 ground connection, be provided with reference voltage V between resistance R3 and resistance R4
refoutput terminal,
Described hall sensing module comprises pull-up power supply V
outwith hall sensing IC, described pull-up power supply V
outoutput terminal be divided into three branch roads, what Article 1 branch road connected hall sensing IC connects test pin, Article 1, branch road is also provided with and carries out to input voltage the direct earth capacitance C4 that interference is gone in filtering, Article 2 branch road connects the power input pin of hall sensing IC, Article 3 branch road contact resistance R2; The grounding pin of hall sensing IC connects earth signal, and the output terminal pin of hall sensing IC is divided into two branch roads, and Article 1 branch road is by electric capacity C5 ground connection, and the output terminal of Article 2 branch road contact resistance R2 is as hall sensing IC output voltage V
halloutoutput terminal;
Described hall sensing IC also comprises IC induced inside unit Hall and by forward peak detection unit PDAC, the high resolving power field intensity peak detection unit that reversed peak detecting unit NDAC and logic amending unit (logic update) form, the original signal that IC induced inside unit Hall exports is by operational amplifier (Hall Amp), temperature compensation calibration unit, low-pass filtering, reference calibration sends to fader DDA, the output terminal of fader DDA is divided into two branch roads, Article 1, branch road connects the input end of forward peak detection unit PDAC and reversed peak detecting unit NDAC respectively, logic amending unit (logic update) is connected with between forward peak detection unit PDAC and reversed peak detecting unit NDAC, forward peak detection unit PDAC is connected the input end of operational mode threshold selector switch with the output terminal of reversed peak detecting unit NDAC, the output terminal of operational mode threshold selector switch and the Article 2 of fader DDA export the input end that branch road all accesses Schmidt trigger, the output terminal of described Schmidt trigger passes through mode control module, current limit module exports hall sensing IC output voltage V
hallout.
Described signal processing module comprises hall sensing IC output voltage V
hallout, reference voltage V
ref, operational amplifier U1A and operational amplifier U1B, hall sensing IC output voltage V
halloutthe in-phase input end of concatenation operation amplifier U1A and the inverting input of operational amplifier U1B respectively, reference voltage V
refoutput terminal be divided into two branch roads, Article 1, branch road is by electric capacity C6 ground connection, Article 2 branch road is the inverting input of concatenation operation amplifier U1A and the in-phase input end of operational amplifier U1B respectively, operational amplifier U1A and operational amplifier U1B power input pin all with pull-up power supply V
outconnect, operational amplifier U1A is connected earth signal with the grounding pin of operational amplifier U1B; The output terminal of described operational amplifier U1A is connected with resistance R5, and the output terminal of resistance R5 is divided into two branch roads, and Article 1 branch road is by electric capacity C7 ground connection, and Article 2 branch output signal A is to car load instrument; Operational amplifier U1B is connected with resistance R6, and the output terminal of resistance R6 is divided into two branch roads, and Article 1 branch road is by electric capacity C8 ground connection, and Article 2 branch output signal B is to car load instrument.
The service area of described power module is designed to DC8V ~ 24V.
Described sensor is arranged on output shaft of gear-box bearing cap.
The housing external thread of described sensor is designed and sized to M18 × 1.5.
Described hall sensing IC is integrated with permanent magnet.
Described target wheel is the target wheel of 8 teeth or 16 teeth.
Described triode emitter follower Q1 adopts NPN structure triode.
Sensor of the present invention rotates by head Hall type sense element senses target wheel foremost the field intensity change produced, and motivate simulating signal, back-end circuit is amplified signal, reverse process, produces output drive signal.
The present invention is directed to the commercial car of Fa Shite wheel box coupling, according to QC/T 783-2007 standard in conjunction with the requirement of commercial car Full Vehicle System, design and develop and meet commercial car electronic odometer sensor, target wheel (being generally 8 teeth or 16 teeth) that this electronic sensor is exported on main shaft by real-time judge wheel box rotates thus output frequency signal, is calculated current vehicle speed and is shown after instrument accepts this frequency signal by the parameter such as axle ratio, tire radius after superposition car load.
Sensor of the present invention has following beneficial effect: in hall sensing IC circuit, be provided with high-resolution field intensity peak detection unit, can the upset threshold point of self-adaptation determination hall sensing IC, even if ensure that hall sensing IC, to the correct induction of tooth top, the change of tooth root field intensity, improves precision and the accuracy rate of sensor under eccentric situation taken turns by target; In hall sensing IC circuit, be provided with the vulnerability to jamming that low-pass filter improves hall sensing IC simultaneously; By rectification diode D1, rectification, oppositely short-circuit protection are carried out to power supply VCC, have employed triode and penetrate the mu balanced circuit that grade follower Q1 mates Zener diode regulator D2 and power to the back-end, ensure back-end circuit for electrical stability.
Further, the present invention is designed with the signal processing module that hall sensing IC outputs signal, and carries out shaping and reverse process, improve reliability and stability of the present invention to IC signal.
Accompanying drawing explanation
Fig. 1 is working sensor schematic diagram of the present invention.
Fig. 2 is sensor internal circuit module.
Fig. 3 is power module schematic diagram.
Fig. 4 is hall sensing modular structure schematic diagram.
Fig. 5 is hall sensing IC inner structure schematic diagram.
Fig. 6 be field intensity when being greater than BOP output state open.
Fig. 7 be field intensity when being less than BRP output state close.
Fig. 8 is operational amplifier comparator circuit structural representation.
Fig. 9 is sensor signal output waveform structural representation.
Figure 10 is sensor contour structures schematic diagram.
In accompanying drawing: 1, power input pin, 2, output pin, 3, test pin, 4, grounding pin.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with the drawings and specific embodiments.
See Fig. 1, a kind of commercial car electronic odometer sensor, comprise service area be designed to the power supply VCC of DC8V ~ 24V and rotate the hall sensing IC of the field intensity change produced for inductive target wheel, power supply VCC connects hall sensing IC, and hall sensing IC is integrated with permanent magnet.
See Fig. 2, power module connects hall sensing module, and the output terminal of hall sensing module is connected with signal processing module, and the output terminal of signal processing module connects car load instrument as output driver module;
See Fig. 3, power module comprises power supply VCC and adopts the triode emitter follower Q1 of NPN structure, power supply VCC connects the input end of commutation diode D1, the output terminal of commutation diode D1 is divided into three branch roads, Article 1, branch road is by electric capacity C1 ground connection, the input end of Article 2 branch road contact resistance R1, the output terminal of resistance R1 connects stake resistance C2 respectively, the base stage of ground connection Zener diode regulator D2 and triode emitter follower Q1, the collector of Article 3 branch road connecting triode emitter follower Q1, the emitter-base bandgap grading output terminal of triode emitter follower Q1 comprises three branch roads, Article 1, branch road is by electric capacity C3 ground connection, Article 2 branch road is as pull-up power supply V
outoutput terminal, Article 3 branch road by series connection resistance R3 and resistance R4 ground connection, be provided with reference voltage V between resistance R3 and resistance R4
refoutput terminal, by rectification diode D1, rectification, oppositely short-circuit protection are carried out to power supply VCC, have employed triode and penetrate the mu balanced circuit that grade follower Q1 mates Zener diode regulator D2 and power to the back-end, ensure back-end circuit for electrical stability.
See Fig. 4, hall sensing module comprises pull-up power supply V
outwith hall sensing IC, described pull-up power supply V
outoutput terminal be divided into three branch roads, what Article 1 branch road connected hall sensing IC connects test pin 3, Article 1, branch road is also provided with and carries out to input voltage the direct earth capacitance C4 that interference is gone in filtering, Article 2 branch road connects the power input pin 1 of hall sensing IC, Article 3 branch road contact resistance R2; The grounding pin 4 of hall sensing IC connects earth signal, and the output terminal pin 2 of hall sensing IC is divided into two branch roads, and Article 1 branch road is by electric capacity C5 ground connection, and the output terminal of Article 2 branch road contact resistance R2 is as hall sensing IC output voltage V
halloutoutput terminal.
See Fig. 5, Fig. 6 and Fig. 7, hall sensing IC also comprises IC induced inside unit Hall and by forward peak detection unit PDAC, the high resolving power field intensity peak detection unit that reversed peak detecting unit NDAC and logic amending unit (logic update) form, the original signal that IC induced inside unit Hall exports is by operational amplifier (Hall Amp), temperature compensation calibration unit, low-pass filtering, reference calibration sends to fader DDA, the output terminal of fader DDA is divided into two branch roads, Article 1, branch road connects the input end of forward peak detection unit PDAC and reversed peak detecting unit NDAC respectively, logic amending unit (logic update) is connected with between forward peak detection unit PDAC and reversed peak detecting unit NDAC, forward peak detection unit PDAC is connected the input end of operational mode threshold selector switch with the output terminal of reversed peak detecting unit NDAC, the output terminal of operational mode threshold selector switch and the Article 2 of fader DDA export the input end that branch road all accesses Schmidt trigger, the output terminal of described Schmidt trigger passes through mode control module, current limit module exports hall sensing IC output voltage V
hallout,
High resolving power field intensity peak detection unit is made up of forward peak detection unit PDAC, reversed peak detecting unit NDAC and logic amending unit (logic update), three carries out real-time follow-up to the field intensity change in the hall sensing IC course of work, forward peak value, reversed peak is calculated by data analysis accumulative in induction process, the data drawn compare with DDA current output signal again, thus finally judge the sense state of IC.Just based on to continuous, the dynamic real-time analysis of field intensity data variation and correction, comparison procedure thus ensure that hall sensing IC judges accurate, the high resolving power that field intensity is responded to.
The output signal of forward peak detection unit PDAC and reversed peak detecting unit NDAC is exported after being compared by Schmidt trigger, Schmidt trigger inside is integrated with a pre-set magnetic hysteresis interval (Hysteresis), the output state of trigger just meeting saltus step when the input signal of trigger is only greater than BRP (Release point) or is less than BOP (Operate point), interval between BRP and BOP is called magnetic hysteresis (Hysteresis), magnetic hysteresis interval can avoid product in the course of the work due to mechanical vibration, the erroneous judgement that external electromagnetic interference is brought induction field intensity values, thus improve the vulnerability to jamming of product.
See Fig. 8, signal processing module comprises hall sensing IC output voltage V
hallout, reference voltage V
ref, operational amplifier U1A and operational amplifier U1B, hall sensing IC output voltage V
halloutthe in-phase input end of concatenation operation amplifier U1A and the inverting input of operational amplifier U1B respectively, reference voltage V
refoutput terminal be divided into two branch roads, Article 1, branch road is by electric capacity C6 ground connection, Article 2 branch road is the inverting input of concatenation operation amplifier U1A and the in-phase input end of operational amplifier U1B respectively, operational amplifier U1A and operational amplifier U1B power input pin all with pull-up power supply V
outconnect, operational amplifier U1A is connected earth signal with the grounding pin of operational amplifier U1B; The output terminal of described operational amplifier U1A is connected with resistance R5, and the output terminal of resistance R5 is divided into two branch roads, and Article 1 branch road is by electric capacity C7 ground connection, and Article 2 branch output signal A is to car load instrument; Operational amplifier U1B is connected with resistance R6, and the output terminal of resistance R6 is divided into two branch roads, and Article 1 branch road is by electric capacity C8 ground connection, and Article 2 branch output signal B is to car load instrument.
See Fig. 8 and Fig. 9, adopt above-mentioned two-way operational amplifier U1 to V
ref, V
halloutinput signal compare, produce two-way output signal, operational amplifier U1A produce output signal A, operational amplifier U1B produce output signal B, as we know from the figure this two paths of signals phase differential 180 °; Design two-way output signal has following advantage: one is meet the semaphore request (user can according to car load ECU require access high level or low level) of passenger car to vehicle power-up initializing kilometer sensor; Two is that two-way exports and can be car load and provide a road space signal, or adopt two paths of signals to drive different loads to increase the driving force of product, in figure, the port short-circuit protection that is designed to of resistance R5, resistance R6 is given security, the present invention carries out secondary reshaping output by the comparator circuit of operational amplifier to signal, improves reliability and stability of the present invention; As can be seen from Figure 8, this product is by V
halloutsignal directly exports to load by U1, and the operational amplifier of employing draws electric current I
sourcecan 30mA be reached, fill with electric current I
sinkfor 20mA.
See Figure 10, the installation site of sensor is on output shaft of gear-box bearing cap, and housing external thread is designed and sized to M18 × 1.5 and installs to mate bearing cap; The spacing that after installing according to three-dimensional assembly simulation and measuring and calculating sensor, its housing end face is taken turns to main shaft target, housing head is designed and sized to 35mm, product connects connector according to ISO 15170 " road vehicle---four pole electric connectors of band pin and twistlock " standard design, the target wheel of target wheel employing 8 tooth or 16 teeth.
The reliable operating temperature scope of hall sensing IC of the present invention is-40 ° ~ 150 °, meets the environment temperature requirement that commercial car is strict.
According to QC/T783-2007 requirement, Sensor Output Characteristic meets following requirement
| Characteristic project | Output characteristics parameter |
| (often turning) umber of pulse | 8,16 |
| Cycle T | When 10ms, 750r/min, during 375r/min, during 1000r/min etc. |
| Dutycycle D | 30％-70％ |
| Rise time t R | Rise(10％-90％)；15us–30?us |
| Fall time t P | Fall(90％-10％)；3.5us–20?us |
| Low level voltage V OL | ≤0.5V |
| High level voltage V OH | ≥5V |
Table 1 Sensor Output Characteristic parameter.
Claims (8)
1. a commercial car electronic odometer sensor, it is characterized in that: the hall sensing module comprising power module and change for the field intensity that inductive target wheel rotates generation, described power module connects hall sensing module, the output terminal of hall sensing module is connected with signal processing module, and the output terminal of signal processing module connects car load instrument as output driver module;
Described power module comprises power supply VCC, power supply VCC connects the input end of commutation diode D1, the output terminal of commutation diode D1 is divided into three branch roads, Article 1, branch road is by electric capacity C1 ground connection, the input end of Article 2 branch road contact resistance R1, the output terminal of resistance R1 connects stake resistance C2 respectively, the base stage of ground connection Zener diode regulator D2 and triode emitter follower Q1, the collector of Article 3 branch road connecting triode emitter follower Q1, the emitter-base bandgap grading output terminal of triode emitter follower Q1 comprises three branch roads, Article 1, branch road is by electric capacity C3 ground connection, Article 2 branch road is as pull-up power supply V
outoutput terminal, Article 3 branch road by series connection resistance R3 and resistance R4 ground connection, be provided with reference voltage V between resistance R3 and resistance R4
refoutput terminal,
Described hall sensing module comprises pull-up power supply V
outwith hall sensing IC, described pull-up power supply V
outoutput terminal be divided into three branch roads, what Article 1 branch road connected hall sensing IC connects test pin (3), Article 1, branch road is also provided with and the direct earth capacitance C4 that interference is gone in filtering is carried out to input voltage, Article 2 branch road connects the power input pin (1) of hall sensing IC, Article 3 branch road contact resistance R2; The grounding pin (4) of hall sensing IC connects earth signal, the output terminal pin (2) of hall sensing IC is divided into two branch roads, Article 1, branch road is by electric capacity C5 ground connection, and the output terminal of Article 2 branch road contact resistance R2 is as hall sensing IC output voltage V
halloutoutput terminal;
Described hall sensing IC also comprises IC induced inside unit Hall and by forward peak detection unit PDAC, the high resolving power field intensity peak detection unit that reversed peak detecting unit NDAC and logic amending unit (logic update) form, the original signal that IC induced inside unit Hall exports is by operational amplifier (Hall Amp), temperature compensation calibration unit, low-pass filtering, reference calibration sends to fader DDA, the output terminal of fader DDA is divided into two branch roads, Article 1, branch road connects the input end of forward peak detection unit PDAC and reversed peak detecting unit NDAC respectively, logic amending unit (logic update) is connected with between forward peak detection unit PDAC and reversed peak detecting unit NDAC, forward peak detection unit PDAC is connected the input end of operational mode threshold selector switch with the output terminal of reversed peak detecting unit NDAC, the output terminal of operational mode threshold selector switch and the Article 2 of fader DDA export the input end that branch road all accesses Schmidt trigger, the output terminal of described Schmidt trigger passes through mode control module, current limit module exports hall sensing IC output voltage V
hallout.
2. a kind of commercial car electronic odometer sensor according to claim 1, is characterized in that: described signal processing module comprises hall sensing IC output voltage V
hallout, reference voltage V
ref, operational amplifier U1A and operational amplifier U1B, hall sensing IC output voltage V
halloutthe in-phase input end of concatenation operation amplifier U1A and the inverting input of operational amplifier U1B respectively, reference voltage V
refoutput terminal be divided into two branch roads, Article 1, branch road is by electric capacity C6 ground connection, Article 2 branch road is the inverting input of concatenation operation amplifier U1A and the in-phase input end of operational amplifier U1B respectively, operational amplifier U1A and operational amplifier U1B power input pin all with pull-up power supply V
outconnect, operational amplifier U1A is connected earth signal with the grounding pin of operational amplifier U1B; The output terminal of described operational amplifier U1A is connected with resistance R5, and the output terminal of resistance R5 is divided into two branch roads, and Article 1 branch road is by electric capacity C7 ground connection, and Article 2 branch output signal A is to car load instrument; Operational amplifier U1B is connected with resistance R6, and the output terminal of resistance R6 is divided into two branch roads, and Article 1 branch road is by electric capacity C8 ground connection, and Article 2 branch output signal B is to car load instrument.
3. a kind of commercial car electronic odometer sensor according to claim 1, is characterized in that: the service area of described power module is designed to DC8V ~ 24V.
4. a kind of commercial car electronic odometer sensor according to claim 1, is characterized in that: described sensor is arranged on output shaft of gear-box bearing cap.
5. a kind of commercial car electronic odometer sensor according to claim 4, is characterized in that: the housing external thread of described sensor is designed and sized to M18 × 1.5.
6. a kind of commercial car electronic odometer sensor according to claim 1, is characterized in that: described hall sensing IC is integrated with permanent magnet.
7. a kind of commercial car electronic odometer sensor according to claim 1, is characterized in that: described target wheel is the target wheel of 8 teeth or 16 teeth.
8. a kind of commercial car electronic odometer sensor according to claim 1, is characterized in that: described triode emitter follower Q1 adopts NPN structure triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558891.2A CN104296773B (en) | 2014-10-20 | 2014-10-20 | A kind of commercial vehicle electric minor kilometer sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558891.2A CN104296773B (en) | 2014-10-20 | 2014-10-20 | A kind of commercial vehicle electric minor kilometer sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104296773A true CN104296773A (en) | 2015-01-21 |
| CN104296773B CN104296773B (en) | 2017-07-28 |
Family
ID=52316606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410558891.2A Active CN104296773B (en) | 2014-10-20 | 2014-10-20 | A kind of commercial vehicle electric minor kilometer sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104296773B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697278A (en) * | 1985-03-01 | 1987-09-29 | Veeder Industries Inc. | Electronic hub odometer |
| CN2666721Y (en) * | 2003-12-22 | 2004-12-29 | 陈建海 | Direct driving electronic vehicle speed hodometer |
| CN201408199Y (en) * | 2009-03-26 | 2010-02-17 | 南京奥联汽车电子电器有限公司 | Rotating speed sensor for Hall gear |
| CN201892975U (en) * | 2010-10-18 | 2011-07-06 | 马专利 | Electronic transducer for automobile mileage valuation |
| CN201955093U (en) * | 2010-11-30 | 2011-08-31 | 长城汽车股份有限公司 | Sensor of automobile milometer |
| CN102278999A (en) * | 2011-07-01 | 2011-12-14 | 南京信息工程大学 | Intelligent digital velocity mileage metering installation |
| CN202710076U (en) * | 2012-07-06 | 2013-01-30 | 徐州工业职业技术学院 | Digital display odometer of electrombile |
| CN204202620U (en) * | 2014-10-20 | 2015-03-11 | 陕西法士特齿轮有限责任公司 | A kind of commercial car electronic odometer sensor |
-
2014
- 2014-10-20 CN CN201410558891.2A patent/CN104296773B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697278A (en) * | 1985-03-01 | 1987-09-29 | Veeder Industries Inc. | Electronic hub odometer |
| CN2666721Y (en) * | 2003-12-22 | 2004-12-29 | 陈建海 | Direct driving electronic vehicle speed hodometer |
| CN201408199Y (en) * | 2009-03-26 | 2010-02-17 | 南京奥联汽车电子电器有限公司 | Rotating speed sensor for Hall gear |
| CN201892975U (en) * | 2010-10-18 | 2011-07-06 | 马专利 | Electronic transducer for automobile mileage valuation |
| CN201955093U (en) * | 2010-11-30 | 2011-08-31 | 长城汽车股份有限公司 | Sensor of automobile milometer |
| CN102278999A (en) * | 2011-07-01 | 2011-12-14 | 南京信息工程大学 | Intelligent digital velocity mileage metering installation |
| CN202710076U (en) * | 2012-07-06 | 2013-01-30 | 徐州工业职业技术学院 | Digital display odometer of electrombile |
| CN204202620U (en) * | 2014-10-20 | 2015-03-11 | 陕西法士特齿轮有限责任公司 | A kind of commercial car electronic odometer sensor |
Non-Patent Citations (2)
| Title |
|---|
| 路国庆等: "脉冲检测方法的霍尔传感器在里程表中的应用", 《机械设计与制造》 * |
| 邱淑贤: "霍尔式汽车车速传感器检测系统", 《长春工业大学学报(自然科学版)》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104296773B (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201408199Y (en) | Rotating speed sensor for Hall gear | |
| CN104569476A (en) | Non-contact engine speed detection circuit | |
| CN204202620U (en) | A kind of commercial car electronic odometer sensor | |
| CN108414785A (en) | Sensor and detection device | |
| CN102645547B (en) | Speed sensor and speed-measuring system of traction motor rotor | |
| CN201259505Y (en) | Accurate wheel speed sensor | |
| CN103954799A (en) | Magnetic rotation speed sensor self-checking device and system and method thereof | |
| CN102393208A (en) | Mile detection device | |
| CN101832749B (en) | Anti-error displacement transducer for Hall-type single-path signal output | |
| CN203941183U (en) | Six passage locomotive shaft-end speed probes | |
| CN104296773A (en) | Electronic type odometer sensor for commercial vehicle | |
| CN105387879A (en) | Absolute position magnetic encoder of large center hole axial magnetization structure | |
| CN103258411A (en) | Intelligent water meter reading system based on GPRS technology | |
| CN203024914U (en) | Direction torque sensor of automobile electric power steering system | |
| CN105067833A (en) | Automobile engine rotating speed detection apparatus based on power controller | |
| CN103604440A (en) | High precision odometer | |
| CN207339817U (en) | A kind of key phase preamplifier | |
| CN212111470U (en) | Speed sensor | |
| CN203870123U (en) | Magnetic rotating speed sensor self-checking device and system | |
| CN201885880U (en) | Automobile brake inspection bench | |
| CN203996044U (en) | Interface circuit between a kind of vehicle speed signal and ECU | |
| CN107192852A (en) | A kind of contactless testing device of speed sensor | |
| CN201817765U (en) | Adaptive control device for asphalt distribution and asphalt distribution truck | |
| CN202281614U (en) | Noncontact speed sensor | |
| CN206892133U (en) | A kind of contactless testing device of speed sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |