CN201331352Y - Non-contact type double signal air throttle position sensor - Google Patents
Non-contact type double signal air throttle position sensor Download PDFInfo
- Publication number
- CN201331352Y CN201331352Y CNU2008202149970U CN200820214997U CN201331352Y CN 201331352 Y CN201331352 Y CN 201331352Y CN U2008202149970 U CNU2008202149970 U CN U2008202149970U CN 200820214997 U CN200820214997 U CN 200820214997U CN 201331352 Y CN201331352 Y CN 201331352Y
- Authority
- CN
- China
- Prior art keywords
- air throttle
- fixed
- magnetic steels
- position sensor
- converting circuit
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a non-contact type double signal air throttle position sensor in the field of sensors, which comprises a shell and a converting circuit, wherein a rotor frame whose one end is connected with a rotation shaft of an air throttle is arranged in the shell, the other end of the rotor frame is provided with a cylindrical hollow cavity, a ring-shaped shielding cover is coaxially fixed in the hollow cavity, two strip-shaped magnetic steels are arranged inside the shielding cover, N poles and S poles of the two magnetic steels are oppositely arranged, the two magnetic steels form central symmetry around rotor shafts, a circuit board of the converting circuit is fixed on the shell, a mounting seat is fixed on the circuit board, the column-shaped lug boss which axially extends into the magnetic steels is arranged on the mounting seat, and two Hall elements for switching-in the converting circuit are arranged in the lug boss in a face to face mode. When in work, the rotation shaft of the air throttle drives the magnetic steels to rotate, and the Hall elements send voltage signals which are generated on two ends to an ECU through the converting circuit for further adjusting the opening degree of the air throttle. The device adopts the non-contact design, does not have abrasion, has reliable use and long service life, and can be used in control systems of engines.
Description
Technical field
The utility model relates to a kind of sensor, particularly the engine throttle position sensing device.
Background technology
In the prior art, the effect of engine throttle position sensing device is that the position of air throttle or aperture are converted to electric signal, is transferred to ECU (Electrical Control Unit) (ECU), judges the foundation of engine operation condition as ECU (Electrical Control Unit).During its work, the driver tramples the depth degree of gas pedal by the accelerator pedal position sensor perception, and is transferred to ECU, after ECU receives order, send instruction, make throttle valve drive motor via reducer structure control throttle opening, throttle position sensor detects and gives ECU with signal feedback.At present, a kind of dual signal contact throttle position sensor is arranged, its structure mainly includes the rotor rack that links with the air throttle rotating shaft, rotor rack is arranged in the housing, also is provided with change-over circuit in the housing, and the circuit board of change-over circuit is arranged in the housing, the power supply input and the signal output interface of change-over circuit are arranged on the housing, be provided with two pots that insert the change-over circuit input end in the housing, potentiometric resistance board is circular arc, and potentiometric slip contact is arranged on the rotor rack end; During its work, the air throttle rotating shaft is rotated can change the throttle opening size, simultaneously, the air throttle rotating shaft is rotated and is driven the rotor rack rotation, the slip contact slides on resistance board thereupon, changes potentiometric resistance, thereby realizes the change of electric signal, by change-over circuit the variation of the signal on two pots is real-time transmitted to ECU (Electrical Control Unit), and compare judgement, realize distributive value control, simultaneously, ECU (Electrical Control Unit) constitutes closed-loop control system with feedback signal, with the control throttle opening.Its weak point is: can produce wearing and tearing because the slip contact slides on resistance board; cause its practical life-span shorter; in addition; engine luggine can cause sliding contact moment throws off; the abrasive particle that the oxidation of resistance board, slip contact, wearing and tearing produce can cause loose contact or output resistance to change; cause distorted signals, engine operating condition is bad, has influenced the reliable use of engine.
The utility model content
The purpose of this utility model provides a kind of non-contact double-signal throttle position sensor, makes its long service life, dependability height.
The purpose of this utility model is achieved in that non-contact double-signal throttle position sensor, comprise housing and change-over circuit, be provided with the rotor rack that an end is connected with the air throttle rotating shaft in the housing, the rotor rack other end is provided with cylindrical cavity, the coaxial radome that is fixed with annular in the described cavity, the radome inboard is provided with two bar magnets that are parallel to each other, the N of two bar magnets, the S utmost point is provided with in opposite directions, and two bar magnets rotating shaft setting that is centrosymmetric that rotates, the circuit board of change-over circuit is fixed on the housing, be fixed with mount pad on the circuit board, mount pad is provided with a boss that is cylindricality, boss is from axially stretching in the magnet steel, and the inside face opposite of described boss is placed with the Hall element of two access change-over circuit input ends.
During this device work, the air throttle rotating shaft drives rotor rack and rotates, magnet steel and radome rotate with rotor rack, radome is made by soft iron, other associated components of rotating shaft of maskable air throttle and air throttle, avoid its signal output to exert an influence to Hall element, when magnet steel rotates, magnetic field produces deflection, the voltage signal variation that Hall element will produce at its two ends passes to change-over circuit, by circuit design, the signal that can make one road Hall element from low to high, the signal of another road Hall element is from high to low, on the pairing any angular position of air throttle rotating shaft, the signal value that two Hall elements produce adds up to fixed value, can satisfy synchronous requirement, and this signal passes to ECU so that further throttle opening is adjusted.Compared with prior art, the utility model adopts contactless design, and not wearing and tearing are used reliably, and the life-span is long, can avoid a series of shortcomings of contact double-signal throttle position sensor, and this device can be used in the control system of engine.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that the B-B of Fig. 1 is to partial view.
Wherein, 1 rotor rack, 2 Hall elements, 3 circuit boards, 4 mount pads, 5 magnet steel, 6 radomes, 7 housings, 8 air throttle rotating shafts.
Embodiment
As Fig. 1 and 2, be non-contact double-signal throttle position sensor, comprise housing 7 and change-over circuit, housing 7 is used to encapsulate the governor motion of air throttle rotating shaft 8, be provided with the rotor rack 1 that an end is connected with air throttle rotating shaft 8 in the housing 7, rotor rack 1 other end is provided with cylindrical cavity, the coaxial radome 6 that is fixed with annular in this cavity, radome 6 inboards are provided with two bar magnets 5, two magnet steel 5 can be inlayed and be fixed on radome 6 inboards, the N of two magnet steel 5, the S utmost point is provided with in opposite directions, and the sub-rotating shaft setting that is centrosymmetric that rotates of two bar magnets 5, and the circuit board 3 of change-over circuit is fixed on the housing 7, be fixed with mount pad 4 on the circuit board 3, be cylindricality on the mount pad 4 and stretch out a boss, boss is from axially stretching in the magnet steel 5, and the inside face opposite of boss is placed with the Hall element 2 of two access change-over circuit input ends.
During its work, air throttle rotating shaft 8 is rotated and is driven rotor rack 1 rotation, magnet steel 5 and radome 6 rotate with rotor rack 1, radome is made by soft iron, other associated components of rotating shaft of maskable air throttle and air throttle, avoid its signal output to exert an influence to Hall element, when magnet steel rotates, magnetic field produces deflection, the voltage signal variation that Hall element 2 will produce at its two ends passes to change-over circuit, the signal of one road Hall element from low to high, the signal of another road Hall element from high to low, on air throttle rotating shaft 8 pairing any angular position, the signal value that two Hall elements 2 produce adds up to fixed value, can satisfy synchronous requirement, this signal passes to ECU so that further throttle opening is adjusted.Two Hall elements are placed face-to-face, can satisfy the Redundancy Design requirement.
Claims (1)
1, non-contact double-signal throttle position sensor, comprise housing and change-over circuit, be provided with the rotor rack that an end is connected with the air throttle rotating shaft in the housing, it is characterized in that the rotor rack other end is provided with cylindrical cavity, the coaxial radome that is fixed with annular in the described cavity, the radome inboard is provided with two bar magnets that are parallel to each other, the N of two bar magnets, the S utmost point is provided with in opposite directions, and two bar magnets rotating shaft setting that is centrosymmetric that rotates, the circuit board of change-over circuit is fixed on the housing, be fixed with mount pad on the circuit board, mount pad is provided with a boss that is cylindricality, boss is from axially stretching in the magnet steel, and the inside face opposite of described boss is placed with the Hall element of two access change-over circuit input ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202149970U CN201331352Y (en) | 2008-12-30 | 2008-12-30 | Non-contact type double signal air throttle position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202149970U CN201331352Y (en) | 2008-12-30 | 2008-12-30 | Non-contact type double signal air throttle position sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331352Y true CN201331352Y (en) | 2009-10-21 |
Family
ID=41224735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202149970U Expired - Fee Related CN201331352Y (en) | 2008-12-30 | 2008-12-30 | Non-contact type double signal air throttle position sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201331352Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267535A (en) * | 2013-04-20 | 2013-08-28 | 重庆佰斯顿电子科技有限公司 | Non-contact throttle position sensor |
| WO2018053793A1 (en) * | 2016-09-23 | 2018-03-29 | Hamlin Electronics (Suzhou) Co., Ltd. | Integrated dual rotary position sensor |
-
2008
- 2008-12-30 CN CNU2008202149970U patent/CN201331352Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267535A (en) * | 2013-04-20 | 2013-08-28 | 重庆佰斯顿电子科技有限公司 | Non-contact throttle position sensor |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20131230 |