CN2881644Y - Ring-shaped Hall wheel speed sensor - Google Patents
Ring-shaped Hall wheel speed sensor Download PDFInfo
- Publication number
- CN2881644Y CN2881644Y CN 200620101554 CN200620101554U CN2881644Y CN 2881644 Y CN2881644 Y CN 2881644Y CN 200620101554 CN200620101554 CN 200620101554 CN 200620101554 U CN200620101554 U CN 200620101554U CN 2881644 Y CN2881644 Y CN 2881644Y
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- ring
- wheel speed
- hall
- gear ring
- permanent magnet
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- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000013016 damping Methods 0.000 description 8
- 230000006698 induction Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010034703 Perseveration Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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Abstract
The utility model discloses a ring-shape Hall wheel speed sensor, including a permanent magnet, a Hall generator, a gear ring and a ring-shape connection assembly, the permanent magnet, the Hall generator, the gear ring are arranged on the ring-shape connection assembly, the magnetic line of the permanent magnet leads to the gear ring through the Hall generator. The utility model has the high response frequency, high resistant electromagnetic interference capacity for the Hall wheel speed sensor while simple structure, high assembly accuracy and low cost.
Description
[technical field]
The utility model relates to sensor, relates in particular to wheel speed sensors.
[background technology]
Braking ability is one of main performance of automobile, and it is related to travel safety.The stability of direction when the basic index of braking ability of estimating an automobile is braking acceleration, braking distance, braking time and braking.
The stability of direction during braking still can be travelled by the track of the direction of appointment when being meant automobile brake.If make the complete locking of wheel because of the brake hard (when especially running at high speed) of automobile, that is breakneck.If the front-wheel locking will make automobile lose steering capability; If rear lock, whipping or tune (sideslip, sideslip) will appear especially under the wet and slippery situation in road surface, traffic safety is caused great harm.
The damping force of automobile depends on the friction force of detent, but the damping force that automobile brake is slowed down also is subjected to the restriction of ground attaching coefficient.When the damping force of detent generation increases to certain value, slippage will appear in doughnut on the ground.Its slip rate δ=(V
t-V
a)/V
t* 100%, wherein: δ--slip rate; V
t--the theoretical velocity of automobile; V
a--the actual speed of automobile.Confirm according to test,, therefore,, must control its slip rate in the 15%-20% scope in order to obtain best braking effect when wheel slip δ=15%---attachment coefficient reaches maximal value in the time of 20%.
Since nineteen fifty, first anti-lock braking system ABS (Ant-ilock Brake System) came out in the world, anti-lock braking system ABS had been widely used on aircraft and the automobile.After computer was popularized, the ABS that is controlled by computer also obtained using on the automobile of Europe, the U.S. and Japan gradually.In the car that countries in the world produce, there is nearly 75% car all to use ABS now.
The function of ABS is exactly when wheel will locking, reduces damping force, and can not increase damping force during locking when wheel, and so perseveration makes braking effect reach the best.
The control mode of ABS has two-parameter control and one-parameter to control two kinds.The ABS of two-parameter control is made up of vehicle speed sensor (velocity radar), wheel speed sensors, control device (computer) and topworks.Its principle of work is vehicle speed sensor and wheel speed sensors, with the speed of a motor vehicle and wheel speed signal input computer, calculates the actual slip rate by computer, and makes comparisons with desired slip rate 15%-20% respectively, increases and decreases the damping force of detent again by solenoid valve.This vehicle speed sensor is used the Doppler range rate measurement radar always.When running car, doppler antenna receives the electromagnetic wave that reflects again simultaneously with the continuous launching electromagnetic wave earthward of certain frequency, and the difference of measured automobiles radar emission and reception just can accurately calculate automobile speed.And wheel speed sensors is contained in gearbox case, is driven by transmission output shaft, and it is a pulse motor, and the frequency that is produced is directly proportional with wheel speed.Topworks is made up of solenoid valve and relay etc.Solenoid valve is adjusted damping force, so that keep desirable slip rate.This ABS can guarantee the ideal control of slip rate, and the anti-lock brake performance is good, but owing to increased a velocity radar, so structure is complicated, cost is also higher.Chinese patent ZL92221809.9 has more detailed explanation to this control mode.The ABS of one-parameter control is an object with the angular deceleration of control wheel, and the damping force of control wheel realizes ABS (Anti-lock Braking System), and its structure mainly is made up of wheel speed sensors, controller (computer) and solenoid valve.Wherein, wheel speed sensors is the critical component of total system.
Wheel speed sensors claims speed probe again, is the speed that is used for detecting wheel, and rate signal is imported the ECU (Electrical Control Unit) of ABS.At present, the speed pickup that is used for the ABS system mainly contains two kinds of electromagnetic type and Hall-types.Electromagnetic wheel speed mainly is made up of permanent magnet, pole axis, inductive coil and gear ring etc.During the gear ring rotation, tooth top and backlash replace the subtend pole axis.In the gear ring rotary course, thereby the magnetic flux alternate of inductive coil inside produces induction electromotive force, and this signal is by the ECU (Electrical Control Unit) of the cable input ABS of inductive coil end.When the rotating speed of gear ring changed, the frequency of induction electromotive force also changed.The ABS ECU (Electrical Control Unit) is come the inspection vehicle wheel speed by the frequency that detects induction electromotive force.The Hall-type wheel speed sensors mainly is made up of sensing head and gear ring, and sensing head is by permanent magnet, and compositions such as Hall element and electronic circuit, the magnetic line of force of permanent magnet pass Hall element and lead to gear.Along with the rotation of gear, the magnetic line of force that passes Hall element disperses a little while, magnetic field relatively a little less than, concentrate a little while, magnetic field is stronger relatively; Like this, when gear ring rotates, cause the variation of Hall voltage, Hall element will be exported the voltage signal that quasi sine distributes, and this signal is converted to the pulse voltage of standard again by electronic circuit.
The output signal voltage amplitude of Hall-type wheel speed sensors is not subjected to the influence of rotating speed; Its frequency response can be equivalent to the signal frequency of being sent when the speed of a motor vehicle is 1000km/h up to 20kHz; Its anti-electromagnetic wave interference performance is also stronger.But, the complex structure of Hall-type wheel speed sensors in the past, cost is higher.
[summary of the invention]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of ring-like Hall-type wheel speed sensors, and sensing head adopts novel permanent magnetic material, and with Hall generator combination, designs simplification, output signal is strong, and anti-interference is good.
For achieving the above object, the utility model proposes a kind of ring-like Hall-type wheel speed sensors, comprise permanent magnet, Hall generator, gear ring and ring-like coupling assembling, described permanent magnet, Hall generator, gear ring are installed on the ring-like coupling assembling, and the magnetic line of force of permanent magnet passes Hall generator and leads to gear ring.
The beneficial effects of the utility model: the utlity model has the high response frequency of Hall-type wheel speed sensors, high anti-electromagnetic wave interference performance, simultaneously simple in structure again, the assembly precision height, cost is low.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the structural representation of a kind of ring-like Hall-type wheel speed sensors of the utility model;
Fig. 2 is the structural representation of gear ring in a kind of ring-like Hall-type wheel speed sensors of the utility model.
[embodiment]
Be illustrated in figure 1 as the structural representation of a kind of ring-like Hall-type wheel speed sensors of the utility model.Be illustrated in figure 2 as the structural representation of gear ring in a kind of ring-like Hall-type wheel speed sensors of the utility model.Comprise permanent magnet 1, Hall generator 2, gear ring 3 and ring-like coupling assembling 4, described permanent magnet 1, Hall generator 2, gear ring 3 are installed on the ring-like coupling assembling 4, and the magnetic line of force of permanent magnet 1 passes Hall generator 2 and leads to gear ring 3.Along with the rotation of gear ring 3, the magnetic line of force that passes Hall generator 2 disperses a little while, magnetic field relatively a little less than, concentrate a little while, magnetic field is stronger relatively; Like this, when gear ring 3 rotates, cause the variation of Hall voltage, Hall element will be exported the voltage signal that quasi sine distributes, and this signal is converted to the pulse voltage of standard again by electronic circuit.
Ring-like Hall-type wheel speed sensors is the ring-like wheel speed sensors of metal in the present embodiment, the hub that is used for middle-size and small-size passenger car, the hub assembly of the ring-like wheel speed sensors of band metal is the pivoting support of car front hub, it connects front-wheel and driving shaft, indoor design is a biserial angular contact ball structure, therefore its advantage such as to have moment of friction little, and limit speed is higher, and carrying connected load ability is also bigger.The ring-like wheel speed sensors output signal of this metal is strong, must be one-time-reach-place but make upper sensor with cooperating of outer ring, unit, has unadjustable property.
Above-mentioned embodiment is to further specify of the present utility model, is not to concrete qualification of the present utility model, and any simple deformation and replacement on the utility model basis all belongs to protection domain of the present utility model.
Claims (1)
1. ring-like Hall-type wheel speed sensors, it is characterized in that: comprise permanent magnet (1), Hall generator (2), gear ring (3) and ring-like coupling assembling (4), described permanent magnet (1), Hall generator (2), gear ring (3) are installed on the ring-like coupling assembling (4), and the magnetic line of force of permanent magnet (1) passes Hall generator (2) and leads to gear ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101554 CN2881644Y (en) | 2006-03-10 | 2006-03-10 | Ring-shaped Hall wheel speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101554 CN2881644Y (en) | 2006-03-10 | 2006-03-10 | Ring-shaped Hall wheel speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881644Y true CN2881644Y (en) | 2007-03-21 |
Family
ID=37881488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620101554 Expired - Fee Related CN2881644Y (en) | 2006-03-10 | 2006-03-10 | Ring-shaped Hall wheel speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881644Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173296A (en) * | 2011-01-26 | 2011-09-07 | 北京交通大学 | Synchronized drive wheel type electromagnetic rail detecting device |
| CN106515692A (en) * | 2016-12-19 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Method and system of emergency parking of vehicle on slope |
| CN109975580A (en) * | 2019-03-27 | 2019-07-05 | 温州佳得智能科技有限公司 | A kind of magnetic bead type acceleration transducer |
-
2006
- 2006-03-10 CN CN 200620101554 patent/CN2881644Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173296A (en) * | 2011-01-26 | 2011-09-07 | 北京交通大学 | Synchronized drive wheel type electromagnetic rail detecting device |
| CN102173296B (en) * | 2011-01-26 | 2013-11-13 | 北京交通大学 | Synchronized drive wheel type electromagnetic rail detecting device |
| CN106515692A (en) * | 2016-12-19 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Method and system of emergency parking of vehicle on slope |
| CN106515692B (en) * | 2016-12-19 | 2018-12-25 | 安徽江淮汽车集团股份有限公司 | A kind of emergency vehicle method and system in slope |
| CN109975580A (en) * | 2019-03-27 | 2019-07-05 | 温州佳得智能科技有限公司 | A kind of magnetic bead type acceleration transducer |
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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: HANGZHOU ZHAOFENG AUTOMOBILE ACCESSORIES MANUFACT Free format text: FORMER OWNER: KONG SUFANG Effective date: 20080905 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080905 Address after: Hangzhou City, Zhejiang Province, South Block of Xiaoshan economic and Technological Development Zone Zhaofeng Road 6, zip code: 311232 Patentee after: Hangzhou Zhaofeng Auto Parts Manufacturing Co., Ltd. Address before: Hangzhou City, Zhejiang Province, South Block of Xiaoshan economic and Technological Development Zone Zhaofeng Road 6, zip code: 311232 Patentee before: Kong Sufang |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG ZHAOFENG MECHANICAL + ELECTRICAL CO., LTD Free format text: FORMER NAME: HANGZHOU ZHAOFENG AUTOMOBILE ACCESSORIES MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang Province, 311232 blocks south of Xiaoshan economic and Technological Development Zone, Zhaofeng Road No. 6 Patentee after: Zhejiang Zhaofeng Mechanical and Electronic Co., Ltd. Address before: Hangzhou City, Zhejiang Province, 311232 blocks south of Xiaoshan economic and Technological Development Zone, Zhaofeng Road No. 6 Patentee before: Hangzhou Zhaofeng Auto Parts Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20140310 |