CN2828739Y - Sensor for pedal position of motor-vehicle - Google Patents
Sensor for pedal position of motor-vehicle Download PDFInfo
- Publication number
- CN2828739Y CN2828739Y CN 200520034042 CN200520034042U CN2828739Y CN 2828739 Y CN2828739 Y CN 2828739Y CN 200520034042 CN200520034042 CN 200520034042 CN 200520034042 U CN200520034042 U CN 200520034042U CN 2828739 Y CN2828739 Y CN 2828739Y
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- sensor
- permanent magnet
- pedal
- pedal shaft
- sensing device
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Abstract
The utility model relates to a sensor on the pedal position of a motor-vehicle. A permanent magnet which is driven by a pedal rotating shaft to rotate is arranged on the pedal rotating shaft, and sensors which are matched with the permanent magnet are arranged in the magnetic sensing range of the permanent magnet, wherein the number of the sensors is two at least; at least one second sensor is arranged at the corresponding position of the maximum magnetic sensing intensity of the permanent magnet corresponding to the start and stop point position where the pedal rotating shaft lies in a full release state; the rest sensors used as first sensors are arranged at a position in magnetic sensing stroke range when the permanent magnet is driven by the pedal rotating shaft to rotate. The utility model not only can realize the detection for the angular displacement state of the pedal rotating shaft, but also can exactly detect and judge whether the pedal rotating shaft is in the start and stop point position. Thus, the utility model is especially suitable for automatic speed changing vehicles.
Description
Technical field
The utility model relates to the sensing device that position and angular displacement status to pedal of vehicles detect.
Background technology
Rotary body is carried out the detection sensing of angular displacement rotation status in the magnetoelectricity mode, present existing mode normally on turning axle with one heart or the off-centre permanent magnet that is connected, a magneto sensor is connected on the support of rotating shaft, when the permanent magnet that together rotates with axle rotates, magnetic field intensity or polarity of the magnetic field between permanent magnet and the magneto sensor change gradually, cause magneto sensor to export a linear change of corresponding curtage therewith, determine the corner of rotating shaft according to the curtage linear relationship corresponding with magnetic field intensity or polarity.This technology has more comprehensively disclosure at US 3,112 in 464 United States Patent (USP)s " Hall effect conversion equipment ".
Above-mentioned technology is for the sensing of the angle electrical output signal based on a kind of linearity, and to the sensing of motor vehicles pedal, except that the turning angle shifting status signal of a kind of pedal of needs, also needs a kind of accurate dead-centre position signal.For example, when complete release the accelerator pedal, accelerator pedal externally under the elastic mechanism effect, is back to top dead center position, and a kind of manipulation intention that makes engine be in idling mode or make vehicle deceleration has been represented in this position; And for example, under external force, when forcing brake pedal to leave top dead center position, represented a kind of intention that vehicle is braked or the like, these intentions often all need to be transferred to controller by the electric signal that a kind of dead-centre position with corresponding pedal gear can accurately be discerned judgement, again by controller to each respective execution mechanisms, control as engine air throttle, braking system etc.When these controlling object relate to traffic safety, the dead-centre position signal of these pedals is carried out high precision and its importance is just showed in highly reliable identification especially.Obtaining of these dead-centre position signals according to the general knowledge of person in electronics, can obtain the stop signal of above-mentioned pedal by the comparison techniques of a kind of voltage or electric current from the linear signal of a same expression angle.But this comparison must be based upon on the basis of certain voltage or difference between current, and the actual anglec of rotation having represented rotating shaft of this difference specifically reflects described a kind of idle motion in the industry on pedal.When the difference scope is too small, favourable to dwindling the unnecessary idle motion aspect of pedal, but the reliability and stability of dead-centre position identification are reduced; When needs improve the reliability and stability of dead-centre position identification, must enlarge difference range, but the idle motion of pedal is increased.Therefore, above-mentioned technical literature and corresponding other public technology can not be satisfactory when the accurate sensing that realizes the dead-centre position of motor vehicles pedal and angular displacement.
Publication number is that the Chinese patent literature of CN1145673A discloses a kind of " device for controlling accelerator pedal of vehicle ", relate to a pedal position sensor, be used to detect the working position of accelerator pedal, its pedal position sensor is made of a variable resistor, and therefore belonging to is a kind of angular displacement sensor.Though the document does not spell out the identification to dead-centre position, but the ultimate principle by its potentiometer inner structure is appreciated that it is the dead-centre position signal that obtains a rotating shaft by the mode that increases a hard contact between moving, the stator of inside.But by general knowledge as can be known, easily there is the restriction of mechanical life between the contact of mechanical slidingtype, therefore is difficult to satisfy the requirement of vehicle driving mileage.
US6689016 discloses a kind of " formation transfers to the method and apparatus of low-grade signal ", wherein transfer to low-grade signal from a linear hall sensor, when the accelerator pedal displacement sharply changes or enter a bottom dead center position, automatic transmission is provided the signal of a gear down.This sensing of finishing the displacement and the dead-centre position of pedal by a linear transducer, though it is simple in structure, but all can change the output line sexual intercourse of linear hall sensor as the natural loss of excitation of the temperature characterisitic of linear hall sensor, permanent magnet and temperature characterisitic etc., thereby the dead-centre position signal is changed, thereby can not be satisfactory on the accuracy of identification of dead-centre position, be not suitable for the sensing requirement of high precision dead-centre position.
Among the DE19855358 disclosed " measuring the apparatus and method of displacement ", by more than one linear transducer and more than one switch sensor are set, correspondence is provided with bar magnet and the mutual component groups of magnetic pole etc. simultaneously, and each signal of sensor Combined Ration decided the displacement of brake pedal after, purpose is to improve the sensing accuracy of pedal displacement and reduces the sensor fault level.In the displacement sensing mode, what it adopted is the mutual component groups of a kind of magnetic pole, and also requirements such as distance have been stipulated as 1mm for the magnet of adjacent pole, the physical distance size that is provided with has determined the precision of displacement sensing, prior art is created conditions down and will inevitably be reduced the sensing accuracy of pedal displacement, also makes whole device complicated simultaneously.
The utility model content
At above-mentioned situation, the utility model will provide a kind of motor vehicle pedal position sensing device of new structure form, make it can not only realize detection, and can whether be in the terminal position to pedal shaft and detect accurately and judge the angular displacement status of pedal shaft.This device is specially adapted in the fluid drive vehicle.
The basic structure of motor vehicle pedal position sensing device of the present utility model, being still that pedal shaft is provided with can be by the permanent magnet of its driven rotary, and is provided with the sensor that adapts with it in its magnetic transducing scope.Wherein said sensor has two at least, wherein have at least one second sensor to be arranged on the maximum magnetic transducing intensity corresponding position that is in corresponding this permanent magnet in full release conditions terminal position with pedal shaft, the position in the magnetic transducing stroke range when being arranged on said this permanent magnet by the pedal shaft driven rotary as all the other sensors of first sensor.
For permanent magnet, two magnetic poles of its N, S are its strongest magnetic transducing position ends.Therefore the second above-mentioned sensor generally should be arranged on and the corresponding sensing location of this end place: both can also can all be provided with corresponding sensor at two ends respectively for being arranged at an end wherein, and use as said second sensor jointly.
In above-mentioned structure, structure as a kind of simple form that can embodiment for reference, be to adopt two said sensors, the corresponding position of magnetic transducing stroke range when one of them is arranged on permanent magnet by the pedal shaft driven rotary is as first sensor; Another is arranged on the maximum magnetic transducing intensity corresponding position that is in corresponding this permanent magnet in full release conditions terminal position with pedal shaft, as second sensor.
The sensing device of said structure form is when work, and when pedal shaft was positioned at the position of terminal, this second sensor and permanent magnetism physical efficiency remained an effective output state; When pedal shaft is subjected to the external force effect and rotates, permanent magnet has left its terminal position, this second sensor also loses sensing thereupon, and the displacement of permanent magnet is simultaneously rotated to make again and remained a kind of changing from small to big or condition sensing that magnetic induction degree from large to small changes between itself and the first sensor.
Said this permanent magnet generally can adopt the form that is fixed on the pedal shaft, but be not limited to this in the said structure, is having under special requirement and/or the situation, do not get rid of also can make this permanent magnet through the kind of drive by the pedal shaft driven rotary.
As above-mentioned, in meeting this sensing device that the utility model structure is provided with requirement, the specific constructive form that is arranged at this permanent magnet on the pedal shaft to being connected need not too much restriction.For example, in a specific embodiment, said this permanent magnet is to adopt the arc permanent-magnet structure body that is provided with along the pedal shaft periphery, this that adapts second sensor is arranged on the corresponding position that is in corresponding this permanent magnet pole end, full release conditions terminal position with pedal shaft with it.In a further embodiment, said this permanent magnet then is adopted as multi-form to has along the pedal shaft permanent-magnet structure body of extended structure radially, second sensor that adapts with it then adopts the different modes that adapts with separately magnet structure to be arranged on the corresponding position that is in corresponding this permanent magnet pole end, full release conditions terminal position with pedal shaft.
The said sensor that adapts with the permanent magnet sensing sources in the utility model said apparatus can be selected according to the usual manner of present electronic technology, for example can select for use as components and parts commonly used such as ambipolar linear hall sensor and/or switch Hall sensors.
Below, foregoing of the present utility model is described in further detail again by embodiment by the accompanying drawing illustrated embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following embodiment.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.
Description of drawings
Fig. 1 is the basic principle schematic of the utility model motor vehicle pedal position sensing device.
Fig. 2 is a kind of corresponding output state synoptic diagram of two sensors.
Fig. 3 is the another kind of corresponding output state synoptic diagram of two sensors.
Fig. 4 is the synoptic diagram of the another kind of basic structure form of the utility model motor vehicle pedal position sensing device.
Fig. 5 is the synoptic diagram of another basic structure form of the utility model motor vehicle pedal position sensing device.
Fig. 6 is based on the synoptic diagram of a kind of concrete application structure of Fig. 1.
Fig. 7 is the left-hand structural representation of Fig. 6.
Embodiment
Shown in Figure 1, be a kind of basic structure principle of the utility model motor vehicle pedal position sensing device.The permanent-magnet structure body 1 that periphery is connected and is provided with an arc on pedal shaft 6.Two different magnetic poles of arc-shaped permanent magnet 1 have been represented at A among the figure, B two ends, have reflected the maximum magnetic field strength zone of each magnetic pole near its two ends, according to the physics law that the magnetic line of force distributes, when getting over away from the two-end-point position, a little less than the Ci field intensity Du more.In its magnetic transducing scope, one second sensor 3 is arranged on the A that is in corresponding this permanent magnet 1 in full release conditions terminal position with pedal shaft 6 and holds maximum magnetic transducing intensity corresponding position, the position in the magnetic transducing stroke range when all the other sensors of another first sensor are arranged on said this permanent magnet 1 by pedal shaft 6 driven rotary.
For convenience of description, specifying first sensor here is a kind of ambipolar linear hall sensor; Second sensor is a kind of switch Hall sensor, but the scope of the described sensor of this claim is also not exclusively contained in this appointment.Situation when a among the figure has represented that pedal is in dead-centre positions of complete release conditions, the physical location of this stop can be realized by a kind of conventional mechanical position-limit mechanism to pedal at present.A finds out from figure, and when pedal was in dead-centre position, second sensor 3 was sitting at the A end of permanent magnet 1, is in condition sensing, exports a low level signal; First sensor 2 is arranged near the B end of permanent magnet 1 with pedal shaft 6 rotating distance magnetic transducing scopes, exports a lower or higher level.When permanent magnet 1 clockwise rotates with rotating shaft, shown in b among the figure, the A end of permanent magnet leaves second sensor 3, draw under the level effect last after losing sensing, be high level state on second sensor, 3 output terminals, away from B end, magnetic induction density weakens or strengthens first sensor 2 gradually gradually, has obtained level from low to high or linear change from high to low on its output terminal.
The corresponding output state of two sensors can be as shown in Figure 2 in the said process.Y-axis among the figure has been represented a dead-centre position of pedal, and X-axis has been represented the angular displacement degree of pedal shaft; 2A has represented the output state of second sensor 3, and 2B has represented the output state of first sensor 2.As shown in the figure, when pedal was positioned at dead-centre position, first sensor 2 output state 2B were in high level or low level, depended on the polarity of external magnetic field or the physical surface of bipolarity sensor.Output character shown in Figure 2 is that a kind of oblique line is shown in a or b among Fig. 2.Also can be a kind of shown in a among Fig. 3, b for a kind of curve, depend on the Changing Pattern of outside rotating magnetic field.This Changing Pattern often depends on the geometric configuration of permanent magnet again, particularly when the gabarit of permanent magnet 1 is a kind of irregular arc.As required, also can obtain a kind of irregular curve by 2B.
On the basis of above-mentioned principle, change permanent magnet 1 outer shape and/or change the relevant position of first, second sensor, or the two is combined and the different embodiments that obtain, can obtain effect same as described above equally.
Wherein:
Fig. 4 is on basis shown in Figure 1, and the geometric configuration that changes permanent magnet 1 obtains the another kind of mode of same effect.A among Fig. 4 is based on the mutual alignment relation of two sensors and permanent magnet 1, and permanent magnet 1 can only turn clockwise; The mutual alignment of two sensors and permanent magnet 1 is changed into shown in b among Fig. 4, then can be made permanent magnet 1 along being rotated counterclockwise.
Fig. 5 is on basis shown in Figure 1, permanent magnet 1 is changed over a kind of by the suitable given shape that combines of arc and bar shaped by single arc, can obtain identical effect.
Fig. 6 and Fig. 7 are based on a kind of concrete basic structure design form of above-mentioned principle.Among the figure, this permanent magnet 1 is fixed on rotating shaft 6 outer peripheral faces, and rotating shaft 6 is rotationally connected by bearing 5 and housing 4, and housing 4 is equal to the above-mentioned alleged rotary shaft rack of the utility model, and first permanent magnet 2 and second permanent magnet 3 are fixed on the housing 4.Rotating shaft 6 is connected with pedal cantilever rigidity through the mechanical connection manner of routine.Drive the rotation of rotating shaft 6 and permanent magnet 1 by the motion of pedal, thereby on first sensor 2, obtain corresponding therewith linear voltage or current value, so the angular displacement of pedal is obtained identification; When outside pedal by the mechanical positioning mechanics limit of routine during at one dead-centre position, according to above-mentioned drive connection, kept one between second sensor 3 and the permanent magnet 1 just by the position of sensing, the dead-centre position of pedal has also obtained identification accurately and reliably.
This shows, the motor vehicle pedal position sensing device of this version provided by the utility model, can overcome the deficiency of present similar technology, can not only realize detection to the angular displacement status of pedal shaft, and can whether be in the terminal position to pedal shaft and detect accurately and judge, and use in being particularly suitable in the fluid drive vehicle.
Claims (7)
1. motor vehicle pedal position sensing device, pedal shaft (6) is provided with can be by the permanent magnet (1) of its driven rotary, in its magnetic transducing scope, be provided with the sensor that adapts with it, it is characterized in that said sensor has two at least, wherein have at least one second sensor (3) to be arranged on and be in the maximum magnetic transducing intensity corresponding position of full release conditions terminal corresponding this permanent magnet in position (1), the position in the magnetic transducing stroke range when being arranged on said this permanent magnet (1) by pedal shaft (6) driven rotary as all the other sensors of first sensor with pedal shaft (6).
2. motor vehicle pedal position sensing device as claimed in claim 1, it is characterized in that said sensor is two, wherein first sensor (2) is arranged on and the magnetic transducing stroke range corresponding position of permanent magnet (1) during by pedal shaft (6) driven rotary, and second sensor (3) is arranged on the maximum magnetic transducing intensity corresponding position that is in full release conditions terminal corresponding this permanent magnet in position (1) with pedal shaft (6).
3. motor vehicle pedal position sensing device as claimed in claim 1 is characterized in that said permanent magnet (1) is fixed on the pedal shaft (6).
4. motor vehicle pedal position sensing device as claimed in claim 3, it is characterized in that the arc permanent-magnet structure body of said permanent magnet (1) for being provided with along pedal shaft (6) periphery, second sensor (3) is arranged on the corresponding position that is in full release conditions terminal corresponding this permanent magnet in position (1) pole end piece with pedal shaft (6).
5. motor vehicle pedal position sensing device as claimed in claim 3, it is characterized in that said permanent magnet (1) for having along pedal shaft (6) the permanent-magnet structure body of extended structure radially, second sensor (3) is arranged on the corresponding position that is in full release conditions terminal corresponding this permanent magnet in position (1) pole end piece with pedal shaft (6).
6. motor vehicle pedal position sensing device as claimed in claim 5 is characterized in that the bar shaped permanent-magnet structure body of said permanent magnet (1) for radially extending along pedal shaft (6).
7. as the described motor vehicle pedal position sensing device of one of claim 1 to 6, it is characterized in that said sensor is ambipolar linear hall sensor and/or switch Hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034042 CN2828739Y (en) | 2005-04-28 | 2005-04-28 | Sensor for pedal position of motor-vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034042 CN2828739Y (en) | 2005-04-28 | 2005-04-28 | Sensor for pedal position of motor-vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2828739Y true CN2828739Y (en) | 2006-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520034042 Expired - Fee Related CN2828739Y (en) | 2005-04-28 | 2005-04-28 | Sensor for pedal position of motor-vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2828739Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216377B (en) * | 2007-12-28 | 2011-03-23 | 联合汽车电子有限公司 | Automobile acceleration pedal durability test machine |
| WO2018053793A1 (en) * | 2016-09-23 | 2018-03-29 | Hamlin Electronics (Suzhou) Co., Ltd. | Integrated dual rotary position sensor |
| CN109489695A (en) * | 2018-12-28 | 2019-03-19 | 成都宏明电子股份有限公司 | A kind of magneto-dependent sensor for the output of RS422 digital signal |
-
2005
- 2005-04-28 CN CN 200520034042 patent/CN2828739Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216377B (en) * | 2007-12-28 | 2011-03-23 | 联合汽车电子有限公司 | Automobile acceleration pedal durability test machine |
| WO2018053793A1 (en) * | 2016-09-23 | 2018-03-29 | Hamlin Electronics (Suzhou) Co., Ltd. | Integrated dual rotary position sensor |
| US11125583B2 (en) | 2016-09-23 | 2021-09-21 | Suzhou Littelfuse Ovs Co., Ltd. | Integrated dual rotary position sensor |
| CN109489695A (en) * | 2018-12-28 | 2019-03-19 | 成都宏明电子股份有限公司 | A kind of magneto-dependent sensor for the output of RS422 digital signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANXING INDUSTRIAL DEVELOPMENT CO., LTD., JIANGXI Free format text: FORMER OWNER: CHENGDU EMTA HIGH-TECH CO., LTD. Effective date: 20080201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080201 Address after: C, building 601, Sanxing building, 289 West Station Road, Jiangxi, Nanchang, China, 330002 Patentee after: Jiangxi Sanxing Industiral Co., Ltd. Address before: No. two, 1, Ke garden, Chengdu hi tech Zone, Sichuan, China: 610041 Patentee before: Chengdu Emta High-Tech Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: NANCHANG ZHENGDAO SCIENTIFIC AND TECHNICAL INDUSTR Free format text: FORMER OWNER: JIANGXI SAMSUNG INDUSTRIAL DEVELOPMENT CO., LTD. Effective date: 20100115 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100115 Address after: North section of Qingshan Lake Avenue, Nanchang City, Jiangxi Province, China: 330039 Patentee after: Nanchang Zhengdao Technology Industries Co.,Ltd. Address before: C, building 601, Sanxing building, 289 West Station Road, Jiangxi, Nanchang, China, 330002 Patentee before: Jiangxi Sanxing Industiral Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061018 Termination date: 20120428 |