CN201653353U - Angle sensor based on giant magnetoresistance chip - Google Patents
Angle sensor based on giant magnetoresistance chip Download PDFInfo
- Publication number
- CN201653353U CN201653353U CN2010201046423U CN201020104642U CN201653353U CN 201653353 U CN201653353 U CN 201653353U CN 2010201046423 U CN2010201046423 U CN 2010201046423U CN 201020104642 U CN201020104642 U CN 201020104642U CN 201653353 U CN201653353 U CN 201653353U
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- circuit board
- axle center
- giant magnetoresistance
- shell
- axle
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Abstract
The utility model relates to the technical field of sensors, in particular to an angle sensor based on a giant magnetoresistance chip, which comprises an axle and a shell arranged at one end of the axle, wherein the other end of the axle is a top used for being linked with an accelerator; one end of the axle, which is located in the shell, is fixedly provided with a magnet; a circuit board is arranged in the shell; the circuit board is provided with two giant magnetoresistance chips for sensing the position change of the magnet corresponding to the position of the magnet; and the two giant magnetoresistance chips are respectively electrically connected with the circuit board. Due to the fact that the utility model adopts the giant magnetoresistance chips with low power consumption, good linear stability, high precision and high sensitivity, the angle sensor has the characteristics of low power consumption, good linear stability, high precision and high sensitivity.
Description
Technical field:
The utility model relates to sensor technical field, relates in particular to a kind of angular transducer based on the giant magnetoresistance chip.
Background technology:
At present, the accelerator pedal sensor that is applied to various vehicles is actually an angular transducer, it extracts the position signalling of moment gas pedal, and be translated into voltage signal and pass to engine controller, engine controller is according to throttle position signal, and the control engine is exported speed and the moment of torsion that the driver needs.
The existing angular transducer that is used for vehicle mainly comprises shell, the axle center, one end in axle center is used for and throttle linkage, the other end is set with magnet and is positioned at shell, also be provided with circuit board in the shell, the position of corresponding magnet is provided with the magnetic induction chip that is used for the induced magnet change in location on the circuit board, the magnetic induction chip is electrically connected with circuit board, when rotating with the axle center of throttle linkage, can drive magnet rotates, and the position signalling of throttle is extracted in the position that the magnetic induction chip rotates by induced magnet, and be converted into voltage signal by circuit board, export engine controller to, engine controller is according to throttle position signal, and the control engine is exported speed and the moment of torsion that the driver needs.But, the magnetic induction chip majority of existing angular transducer is to adopt the Hall effect sensing chip, and, cause these angular transducers that adopt the Hall effect sensing chips to have that Linear Stability is relatively poor, precision is not high, the not high shortcoming of sensitivity because the Hall effect sensing chip itself exists that Linear Stability is relatively poor, precision is not high, the not high weak point of sensitivity.
The utility model content:
The purpose of this utility model is exactly to provide the angular transducer based on giant magnetoresistance (GMR, GiantMagneto Resistive) chip that a kind of Linear Stability is good, precision is high, highly sensitive at the deficiency of prior art existence.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of angular transducer based on the giant magnetoresistance chip, it comprises the axle center, is arranged on the shell of axle center one end, the other end in axle center is the top that is used for throttle linkage, the end that the axle center is positioned at shell is set with magnet, be provided with circuit board in the shell, the position of corresponding magnet is provided with two giant magnetoresistance chips that are used for the induced magnet change in location on the described circuit board, and two giant magnetoresistance chips all are electrically connected with circuit board.
The model of described two giant magnetoresistance chips is GA5011 half-bridge chip.
Further comprise axle sleeve, axle sleeve body, axle sleeve is set in the middle part in axle center, the axle sleeve body is fixed on the bottom of axle sleeve, the shell snapping is fixed on the bottom of axle sleeve body, the common formation of axle sleeve body and shell one disposal area, the bottom in axle center is positioned at the disposal area, and the bottom in axle center is fixed with the axle center body, be outward extended with fixed arm on the body of axle center, described magnet is fixed on the fixed arm; Described circuit board is made up of first circuit board and second circuit board, first circuit board is electrically connected with second circuit board, first circuit board and second circuit board all are fixed in the disposal area, first circuit board is two parts to protrude stupefied spring folding, two giant magnetoresistance chips are symmetricly set on the both sides of protruding stupefied limit respectively, two giant magnetoresistance chips are electrically connected with first circuit board, and second circuit board is provided with the signal terminal that is used to export electric signal.
The bottom in described axle center is fixed with screw, and the bottom in axle center is arranged with returns medi-spring, returns medi-spring between axle center body and screw.
The described two ends of medi-spring of returning respectively are bent with a pin, and the side direction compacted under with respect to fixed arm on the body of axle center has limited block, and limited block is being returned between two pins of medi-spring.
Offer first ring groove between the top in described axle center and the middle part, be connected with " C " type ring in first ring groove; The middle part in described axle center offers second ring groove, is fixed with the axle center water proof ring in second ring groove.
Be provided with axle sleeve body water proof ring between the bottom of described axle sleeve body and the shell.
Described second circuit board is provided with the power supply terminal that is used to provide power supply.
The top in described axle center offers omission.
The top of described shell forms the snapping piece, and the top of axle sleeve body offers the snapping position with snapping piece coupling, and the snapping piece is connected in the snapping position.
The utility model beneficial effect is:
The angular transducer based on the giant magnetoresistance chip that the utility model provides comprises the axle center, is arranged on the shell of axle center one end, the other end in axle center is the top that is used for throttle linkage, the end that the axle center is positioned at shell is set with magnet, be provided with circuit board in the shell, the position of corresponding magnet is provided with two giant magnetoresistance chips that are used for the induced magnet change in location on the described circuit board, and two giant magnetoresistance chips all are electrically connected with circuit board; Because the utility model has adopted low-power consumption, Linear Stability is good, precision is high, highly sensitive giant magnetoresistance chip, therefore, the utlity model has low-power consumption, Linear Stability is good, precision is high, highly sensitive characteristics.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a decomposing schematic representation of the present utility model;
Fig. 3 is the structural representation of the utility model axle center body, magnet, first circuit board and two giant magnetoresistance chips;
Fig. 4 is the upward view of Fig. 3.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described, please refer to Fig. 1～4, the utility model comprises axle center 1, be arranged on the shell 4 of axle center 1 one ends, the other end in axle center 1 is to be used for extending outside the shell 4 with the top 11 of throttle linkage and its, the end that axle center 1 is positioned at shell 4 is set with magnet 142, be provided with circuit board in the shell 4, the position of corresponding magnet 142 is provided with two giant magnetoresistance chips 511 that are used for induced magnet 142 change in location on the described circuit board, two giant magnetoresistance chips 511 all are electrically connected with circuit board, more particularly, the utility model further comprises axle sleeve 2, axle sleeve body 3, axle sleeve 2 is set in the middle part 12 in axle center 1, axle sleeve body 3 is fixed on the bottom of axle sleeve 2, shell 4 snappings are fixed on the bottom of axle sleeve body 3, axle sleeve body 3 and shell 4 common formations one disposal area 5, the bottom 13 in axle center 1 is positioned at disposal area 5, and the bottom 13 in axle center 1 is fixed with axle center body 14, be outward extended with fixed arm 141 on the axle center body 14, described magnet 142 is fixed on the fixed arm 141; Described circuit board is made up of first circuit board 51 and second circuit board 52, first circuit board 51 is electrically connected with second circuit board 52, first circuit board 51 and second circuit board 52 all are fixed in the disposal area 5, first circuit board 51 is two parts to protrude 512 bendings of stupefied limit, two giant magnetoresistance chips 511 are symmetricly set on the both sides of protruding stupefied limit 512 respectively, and the center line of magnet 142 just faces toward the stupefied limit 512 of protrusion of first circuit board 51, promptly two giant magnetoresistance chips 511 also are symmetrically arranged with the center line of magnet 142, make that magnet 142 is identical (being that initial position is zero) with respect to the initial position of two giant magnetoresistance chips 511, two giant magnetoresistance chips 511 are electrically connected with first circuit board 51, second circuit board 52 is provided with the signal terminal 521 that is used to export electric signal, certainly, on second circuit board 52, also be provided with power supply terminal 522, be used to each circuit on the circuit board that working power is provided; Wherein, the model of described two giant magnetoresistance chips 511 is a GA5011 half-bridge chip, compare with the Hall effect sensing chip, advantages such as giant magnetoresistance chip 511 has low-power consumption, Linear Stability is good, precision is high, sensitivity height, therefore, the utlity model has low-power consumption, characteristics such as Linear Stability is good, precision is high, sensitivity height.Certainly, described two giant magnetoresistance chips 511 can also adopt the giant magnetoresistance chip of other model, are not limited to the GA5011 half-bridge chip that present embodiment is selected for use, if its have low-power consumption, advantages such as Linear Stability is good, precision is high, sensitivity height.
The bottom in present embodiment axle center 1 is fixed with screw 15, and this screw 15 is a word screw, certainly, in the present embodiment, also can adopt other clamping thing, as long as it can will return medi-spring 16 to block; The described bottom 13 of returning medi-spring 16 to be set in axle center 1, and return medi-spring 16 between axle center body 14 and screw 15, the described two ends of medi-spring 16 of returning respectively are bent with a pin 161, side direction compacted under with respect to fixed arm 141 on the axle center body 14 has limited block 143, limited block 143 is being returned between two pins 161 of medi-spring 16, promptly return the angle between two pins 161 of medi-spring 16, being exactly magnet 142 rotary angles, also is 511 angles that can respond to of giant magnetoresistance chip.
Offer between the top 11 in present embodiment axle center 1 and the middle part 12 in first ring groove, 17, the first ring grooves 17 and be connected with " C " type ring 171; The middle part 12 in axle center 1 offers in second ring groove, 18, the second ring grooves 18 and is fixed with axle center water proof ring 181; It is vacant 19 that the top 11 in axle center 1 offers, so that being connected and fixed of axle center 1 and throttle; Be provided with axle sleeve body water proof ring 31 between the bottom of described axle sleeve body 3 and the shell 4, said structure can prevent that steam or foreign material from entering in the disposal area 5.
The top of present embodiment shell 4 forms snapping piece 41, the top of axle sleeve body 3 offers the snapping position 32 with snapping piece 41 couplings, snapping piece 41 is connected in the snapping position 32, thereby shell 4 snappings are fixed on the bottom of axle sleeve body 3, certainly, described shell 4 also can adopt alternate manner to be fixed on the bottom of axle sleeve body 3, is not limited to the snapping form.
The utility model in use, axle center 1 with throttle linkage, when rotating, can drive the magnet 142 that is fixed on the fixed arm 141 rotates, and the position signalling of throttle is extracted in the position (being rotational angle) that symmetrically arranged two giant magnetoresistance chips 511 rotate by induced magnet 142, and be converted into voltage signal by first circuit board 51 and second circuit board 52, export engine controller to through signal terminal 521, engine controller is according to throttle position signal, and the control engine is exported speed and the moment of torsion that the driver needs; Certainly, under the effect of returning medi-spring 16, after magnet 142 rotates, can automatically reset.
The above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (10)
1. angular transducer based on the giant magnetoresistance chip, it comprises axle center (1), is arranged on the shell (4) of axle center (1) one end, the other end in axle center (1) is the top (11) that is used for throttle linkage, the end that axle center (1) is positioned at shell (4) is set with magnet (142), shell is provided with circuit board in (4), it is characterized in that: the position of corresponding magnet (142) is provided with two giant magnetoresistance chips (511) that are used for induced magnet (142) change in location on the described circuit board, and two giant magnetoresistance chips (511) all are electrically connected with circuit board.
2. a kind of angular transducer based on the giant magnetoresistance chip according to claim 1 is characterized in that: the model of described two giant magnetoresistance chips (511) is GA5011 half-bridge chip.
3. a kind of angular transducer according to claim 2 based on the giant magnetoresistance chip, it is characterized in that: further comprise axle sleeve (2), axle sleeve body (3), axle sleeve (2) is set in the middle part (12) of axle center (1), axle sleeve body (3) is fixed on the bottom of axle sleeve (2), shell (4) snapping is fixed on the bottom of axle sleeve body (3), axle sleeve body (3) constitutes a disposal area (5) jointly with shell (4), the bottom (13) in axle center (1) is positioned at disposal area (5), and the bottom (13) of axle center (1) is fixed with axle center body (14), be outward extended with fixed arm (141) on the axle center body (14), described magnet (142) is fixed on the fixed arm (141); Described circuit board is made up of first circuit board (51) and second circuit board (52), first circuit board (51) is electrically connected with second circuit board (52), first circuit board (51) and second circuit board (52) all are fixed in the disposal area (5), first circuit board (51) is two parts to protrude stupefied limit (512) bending, two giant magnetoresistance chips (511) are symmetricly set on the both sides of protruding stupefied limit (512) respectively, two giant magnetoresistance chips (511) are electrically connected with first circuit board (51), and second circuit board (52) is provided with the signal terminal (521) that is used to export electric signal.
4. a kind of angular transducer according to claim 3 based on the giant magnetoresistance chip, it is characterized in that: the bottom of described axle center (1) is fixed with screw (15), the bottom (13) in axle center (1) is arranged with returns medi-spring (16), returns medi-spring (16) to be positioned between axle center body (14) and the screw (15).
5. a kind of angular transducer according to claim 4 based on the giant magnetoresistance chip, it is characterized in that: the described two ends of medi-spring (16) of returning respectively are bent with a pin (161), the side direction compacted under that axle center body (14) is gone up with respect to fixed arm (141) has limited block (143), and limited block (143) is positioned between two pins (161) of returning medi-spring (16).
6. a kind of angular transducer according to claim 3 based on the giant magnetoresistance chip, it is characterized in that: offer first ring groove (17) between the top (11) of described axle center (1) and middle part (12), be connected with " C " type ring (171) in first ring groove (17); The middle part (12) in axle center (1) offers second ring groove (18), is fixed with axle center water proof ring (181) in second ring groove (18).
7. a kind of angular transducer based on the giant magnetoresistance chip according to claim 3 is characterized in that: be provided with axle sleeve body water proof ring (31) between the bottom of described axle sleeve body (3) and the shell (4).
8. a kind of angular transducer based on the giant magnetoresistance chip according to claim 3 is characterized in that: described second circuit board (52) is provided with the power supply terminal (522) that is used to provide power supply.
9. a kind of angular transducer based on the giant magnetoresistance chip according to claim 3 is characterized in that: the top (11) of described axle center (1) offers omission (19).
10. a kind of angular transducer according to claim 3 based on the giant magnetoresistance chip, it is characterized in that: the top of described shell (4) forms snapping piece (41), the top of axle sleeve body (3) offers the snapping position (32) with snapping piece (41) coupling, and snapping piece (41) is connected in the snapping position (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201046423U CN201653353U (en) | 2010-01-26 | 2010-01-26 | Angle sensor based on giant magnetoresistance chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201046423U CN201653353U (en) | 2010-01-26 | 2010-01-26 | Angle sensor based on giant magnetoresistance chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653353U true CN201653353U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201046423U Expired - Fee Related CN201653353U (en) | 2010-01-26 | 2010-01-26 | Angle sensor based on giant magnetoresistance chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653353U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506700A (en) * | 2011-11-28 | 2012-06-20 | 武汉理工大学 | Angle sensor for automobile steering wheel |
| CN109029239A (en) * | 2017-06-12 | 2018-12-18 | 英飞凌科技股份有限公司 | The angular transducer bridge of magnetoresistive element including star-like connection |
-
2010
- 2010-01-26 CN CN2010201046423U patent/CN201653353U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506700A (en) * | 2011-11-28 | 2012-06-20 | 武汉理工大学 | Angle sensor for automobile steering wheel |
| CN109029239A (en) * | 2017-06-12 | 2018-12-18 | 英飞凌科技股份有限公司 | The angular transducer bridge of magnetoresistive element including star-like connection |
| US10605626B2 (en) | 2017-06-12 | 2020-03-31 | Infineon Technologies Ag | Angle sensor bridges including star-connected magnetoresistive elements |
| CN109029239B (en) * | 2017-06-12 | 2020-09-11 | 英飞凌科技股份有限公司 | Angle sensor bridge comprising star-connected magnetoresistive elements |
| US11002567B2 (en) | 2017-06-12 | 2021-05-11 | Infineon Technologies Ag | Angle sensor bridges including star-connected magnetoresistive elements |
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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: GUO SHIQIU Free format text: FORMER OWNER: DONGGUAN MEIMA SENSOR TECHNOLOGY CO., LTD. Effective date: 20110212 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 523000 DONGGUAN MEIMAN SENSOR TECHNOLOGY CO., LTD., ROOM 1509, GUOTAI BUILDING, BEIQIFENG ROAD, DONGCHENG DISTRICT, DONGGUAN CITY, GUANGDONG PROVINCE TO: 523000 207, BUILDING B, GAOSHENG SCIENCE AND TECHNOLOGY PARK, NO.5, LONGXI ROAD, NANCHENG DISTRICT, DONGGUAN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110212 Address after: 523000 Guangdong Province, Dongguan Nancheng District Longxi Road No. 5 Goldman Science Park B building 207 Patentee after: Guo Shiqiu Address before: 523000 Guangdong city of Dongguan province Dongcheng District Gang Bei Qifeng road Cathay Building room 1509 Dongguan Meiman Sensor Technology Co. Ltd. Patentee before: Dongguan Meiman Sensor Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |