CN103350692A - Method of electronic parking braking of novel tension sensor - Google Patents
Method of electronic parking braking of novel tension sensor Download PDFInfo
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- CN103350692A CN103350692A CN2013103424720A CN201310342472A CN103350692A CN 103350692 A CN103350692 A CN 103350692A CN 2013103424720 A CN2013103424720 A CN 2013103424720A CN 201310342472 A CN201310342472 A CN 201310342472A CN 103350692 A CN103350692 A CN 103350692A
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- permanent magnet
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- hall sensing
- displacement
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Abstract
The invention relates a method of electronic parking braking of a novel tension sensor. The method comprises the following steps: 1, a braking motor shaft drives a spring seat which is connected with the braking motor shaft, and a spring connected with the spring seat is compressed and deformed under compressing of the spring seat, then, the stress acting on the spring is equal to the axial tension of a brake motor; 2, a permanent magnet on the spring seat moves together with the spring seat during the stressing process of the spring, the displacement of the spring is the displacement of the permanent magnet, 3,a hall sensor chip is fixed on the shell of a sensor, the spring, the spring seat, the permanent magnet and the Hall sensor chip are mounted in the shell of the sensor. The hall sensor chip is in relatively static state, and magnetic field intensity of the hall sensor chip at the induction point is changed when the permanent magnet generates the displacement; 4, during the moving process of the permanent magnet, the magnetic field intensity is changed and translated into a metabolic voltage signal, and then delivered to an ECU( Engine Control Unit ) of a car.
Description
Technical field
The present invention relates to a kind of electronic parking braking method, relate in particular to a kind of electronic parking braking method of novel pulling force sensor.
Background technology
Modern automobile is more and more pursued comfortable pulsation-free driving environment, and traditional parking brake emergency brake system complicated operation, chaufeur need to move at provisional parking and the long-time time brake operating that stops more complicated, and the driver behavior traveling comfort is poor.
Summary of the invention
The invention provides for above problem that a kind of braking during standstill program is simple, the electronic parking braking method of the novel pulling force sensor of convenient operation.
In order to overcome the above problems the electronic parking braking method that the invention provides a kind of novel pulling force sensor, it is characterized in that: may further comprise the steps:
The first step: the conversion of braking motor axle pulling force and spring pressure: the braking motor axle drives coupled spring perch and moves, and the spring that links to each other with spring perch produces compressive deformation under the compression of spring perch, namely produce straight-line displacement; At this moment, the spring pressure equals the axial pulling force of braking motor;
Second step: braking motor axle pulling force is to the conversion of permanent magnet displacement: the permanent magnet on the spring pressurized process is hit by a bullet spring abutment is mobile with spring perch, and the displacement of spring is the displacement of permanent magnet;
The 3rd step: permanent magnet is displaced to the conversion of hall sensing chip induction point change of magnetic field strength: the hall sensing chip is fixed on the sensor housing, spring, spring perch, permanent magnet, hall sensing chip are arranged in the sensor housing, the hall sensing chip is in relative static conditions, so, the position of hall sensing chip is fixed, when permanent magnet is subjected to displacement, when producing displacement, for the magnetic-field intensity at hall sensing chip induction point place change has occured;
The 4th step: the hall sensing chip is in the process that permanent magnet moves, and the induced field Strength Changes also sends the voltage signal that this variation is converted into variation to automobile ECU.
Being converted into of the first step described braking motor axle pulling force and spring 1 pressure: braking motor axle tensile force f=spring 1 pressure Fs; According to spring performance: Fs=Ks, its K is that the elasticity modulus of spring 1 is definite value, and s is the compression displacement amount of spring 1;
The 3rd step, described permanent magnet 3 was displaced to being converted into of hall sensing chip 4 induction point change of magnetic field strength, the displacement that casehistory is worked as permanent magnet 3 changes to 3mm by 0, and hall sensing chip 4 induction point magnetic-field intensitys are by the variation of-480 Gausses to 537.2 Gausses; The maximum of displacement needs to decide according to sensor housing 5 horizontal space sizes.
The 4th goes on foot the variation of described hall sensing chip 4 induced field intensity and this is changed into the output voltage signal of variation, casehistory: when hall sensing chip 4 induction point magnetic-field intensitys by the variation of-480 Gausses to 537.2 Gausses, the output voltage of hall sensing chip 4 is changed to 1.0V to 4.2V.
The inventive method is converted into braking during standstill power voltage signal and feeds back to automobile ECU, so that automobile electronic parking braking system has formed closed loop control, navigating mate no longer pulls at traditional hand-braking, operates more comfortable.
Description of drawings
Fig. 1 is the inventive method diagram of circuit;
Fig. 2 is the novel pulling force sensor structural representation that the inventive method is used;
Fig. 3 is the performance diagram of the inventive method spring;
Fig. 4 is the inventive method hall sensing chip induction point place change of magnetic field strength graph of relation;
Fig. 5 is that the inventive method draws hall sensing chip output voltage variation relation diagram of curves according to hall sensing chip induction point place change of magnetic field strength;
Fig. 6 is detected tensile force f and output voltage variation relation diagram of curves by the inventive method sensor.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As illustrated in fig. 1 and 2, the invention provides a kind of electronic parking braking method of novel pulling force sensor, may further comprise the steps:
The first step: the conversion of braking motor axle pulling force and spring 1 pressure: the braking motor axle drives coupled spring perch 2 and moves, the spring 1 that links to each other with spring perch 2 produces compressive deformation under the compression of spring perch 2, namely produce straight-line displacement, at this moment, spring 1 pressure equals the axial pulling force of braking motor;
Second step: braking motor axle pulling force is to the conversion of permanent magnet 3 displacements: the permanent magnet 3 on spring 1 pressurized process is hit by a bullet spring abutment 2 is mobile with spring perch 2, and the displacement of spring is the displacement of permanent magnet;
The 3rd step: permanent magnet 3 is displaced to the conversion of hall sensing chip 4 induction point change of magnetic field strength: hall sensing chip 4 is fixed on the sensor housing 5, spring 1, spring perch 2, permanent magnet 3, hall sensing chip 4 are arranged in the sensor housing 5, hall sensing chip 4 is in relative static conditions, so, the position of hall sensing chip 4 is fixed, when permanent magnet 3 is subjected to displacement, when producing displacement, for the magnetic-field intensity at hall sensing chip 4 induction point places change has occured;
The 4th step: hall sensing chip 4 is in the process that permanent magnet 3 moves, and the induced field Strength Changes also sends the voltage signal that this variation is converted into variation to automobile ECU.
By foregoing description following corresponding relation is arranged:
Braking motor axle tensile force f=spring 1 pressure Fs;
According to spring performance: in the Fs=Ks(formula, K is that the elasticity modulus of spring 1 is definite value, and s is the compression displacement amount of spring 1, the i.e. axial displacement of braking motor axle), Fig. 3 is the performance diagram of spring 1;
According to the compression displacement amount of spring 1, draw hall sensing chip 4 induction point place change of magnetic field strength relation curves and be illustrated in fig. 4 shown below.
Draw hall sensing chip 4 output voltage variation relation curves as shown in Figure 5 according to hall sensing chip 4 induction point place change of magnetic field strength.
According to above-mentioned spring 1 characteristic curve, hall sensing chip 4 induction point place change of magnetic field strength curves and hall sensing chip 4 output voltage change curves draw tensile force f that sensor detects and output voltage variation relation curve is illustrated in fig. 6 shown below.
The above is the preferred embodiments of the present invention only, is not restricted to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (3)
1. the electronic parking braking method of a novel pulling force sensor is characterized in that: may further comprise the steps:
The first step: the conversion of braking motor axle pulling force and spring (1) pressure: it is mobile that the braking motor axle drives coupled spring perch (2), the spring (1) that links to each other with spring perch (2) produces compressive deformation under the compression of spring perch (2), namely produce straight-line displacement, at this moment, spring (1) pressure equals the axial pulling force of braking motor;
Second step: braking motor axle pulling force is to the conversion of permanent magnet (3) displacement: the permanent magnet (3) on spring (1) pressurized process is hit by a bullet spring abutment (2) is mobile with spring perch (2), and the displacement of spring is the displacement of permanent magnet;
The 3rd step: permanent magnet (3) is displaced to the conversion of hall sensing chip (4) induction point change of magnetic field strength: hall sensing chip (4) is fixed on the sensor housing (5), spring (1), spring perch (2), permanent magnet (3), hall sensing chip (4) is arranged in the sensor housing (5), hall sensing chip (4) is in relative static conditions, so, the position of hall sensing chip (4) is fixed, when permanent magnet (3) when being subjected to displacement, when producing displacement, for the magnetic-field intensity at hall sensing chip (4) induction point place change has occured;
The 4th step: hall sensing chip (4) is in the mobile process of permanent magnet (3), and the induced field Strength Changes also sends the voltage signal that this variation is converted into variation to automobile ECU.
2. the electronic parking braking method of a kind of novel pulling force sensor according to claim 1 is characterized in that: being converted into of the first step described braking motor axle pulling force and spring (1) pressure: braking motor axle tensile force f=spring (1) pressure Fs; According to spring performance: Fs=Ks, its K is that the elasticity modulus of spring (1) is definite value, and s is the compression displacement amount of spring (1).
3. the electronic parking braking method of a kind of novel pulling force sensor according to claim 1, it is characterized in that: the 3rd described permanent magnet of step (3) is displaced to being converted into of hall sensing chip (4) induction point change of magnetic field strength: along with the displacement of permanent magnet (3), displacement changes to 3mm by 0, and hall sensing chip (4) induction point magnetic-field intensity is by the variation of-480 Gausses to 537.2 Gausses;
The variation of the 4th step described hall sensing chip (4) induced field intensity also with this output voltage signal that changes into variation is: along with hall sensing chip (4) induction point magnetic-field intensity by the variation of-480 Gausses to 537.2 Gausses, the output voltage of hall sensing chip (4) is changed to 1.0V to 4.2V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103424720A CN103350692A (en) | 2013-08-08 | 2013-08-08 | Method of electronic parking braking of novel tension sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103424720A CN103350692A (en) | 2013-08-08 | 2013-08-08 | Method of electronic parking braking of novel tension sensor |
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| CN103350692A true CN103350692A (en) | 2013-10-16 |
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| CN2013103424720A Pending CN103350692A (en) | 2013-08-08 | 2013-08-08 | Method of electronic parking braking of novel tension sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197626A (en) * | 2016-09-12 | 2016-12-07 | 韶关学院 | A kind of beam type pressure transducer based on Hall effect |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007127482A (en) * | 2005-11-02 | 2007-05-24 | Advics:Kk | Tension sensor and electric parking brake |
| KR20110060985A (en) * | 2009-12-01 | 2011-06-09 | 대성전기공업 주식회사 | Tension measuring assembly for electrical parking brake |
| KR20110075151A (en) * | 2009-12-28 | 2011-07-06 | 현대모비스 주식회사 | Load sensor for electronic parking brake |
| CN202372292U (en) * | 2011-12-20 | 2012-08-08 | 东风汽车公司 | Electronic parking force measurement device |
| CN103105258A (en) * | 2011-11-14 | 2013-05-15 | 株式会社万都 | Sensor unit for measuring braking power of parking cable and electronic parking brake |
| DE102011119310A1 (en) * | 2011-11-24 | 2013-05-29 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Force sensor arrangement for parking brake of motor car, has force sensor spring that is operated in direction immediately against support element or counter bearing, and tension spring element that is set to apply bias voltage |
| CN203011601U (en) * | 2012-12-27 | 2013-06-19 | 浙江万向精工有限公司 | Tension sensor of electronic parking brake device |
-
2013
- 2013-08-08 CN CN2013103424720A patent/CN103350692A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007127482A (en) * | 2005-11-02 | 2007-05-24 | Advics:Kk | Tension sensor and electric parking brake |
| KR20110060985A (en) * | 2009-12-01 | 2011-06-09 | 대성전기공업 주식회사 | Tension measuring assembly for electrical parking brake |
| KR20110075151A (en) * | 2009-12-28 | 2011-07-06 | 현대모비스 주식회사 | Load sensor for electronic parking brake |
| CN103105258A (en) * | 2011-11-14 | 2013-05-15 | 株式会社万都 | Sensor unit for measuring braking power of parking cable and electronic parking brake |
| DE102011119310A1 (en) * | 2011-11-24 | 2013-05-29 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Force sensor arrangement for parking brake of motor car, has force sensor spring that is operated in direction immediately against support element or counter bearing, and tension spring element that is set to apply bias voltage |
| CN202372292U (en) * | 2011-12-20 | 2012-08-08 | 东风汽车公司 | Electronic parking force measurement device |
| CN203011601U (en) * | 2012-12-27 | 2013-06-19 | 浙江万向精工有限公司 | Tension sensor of electronic parking brake device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197626A (en) * | 2016-09-12 | 2016-12-07 | 韶关学院 | A kind of beam type pressure transducer based on Hall effect |
| CN106197626B (en) * | 2016-09-12 | 2019-01-04 | 韶关学院 | A kind of beam type pressure sensor based on Hall effect |
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| CB03 | Change of inventor or designer information |
Inventor after: Xu Zhenhua Inventor after: Wang Xingliang Inventor before: Xu Zhenhua |
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Free format text: CORRECT: INVENTOR; FROM: XU ZHENHUA TO: XU ZHENHUA WANG XINGLIANG |
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Application publication date: 20131016 |