CN205176050U - Motor speed sensor of vehicle electron parking system - Google Patents
Motor speed sensor of vehicle electron parking system Download PDFInfo
- Publication number
- CN205176050U CN205176050U CN201520891395.9U CN201520891395U CN205176050U CN 205176050 U CN205176050 U CN 205176050U CN 201520891395 U CN201520891395 U CN 201520891395U CN 205176050 U CN205176050 U CN 205176050U
- Authority
- CN
- China
- Prior art keywords
- hall chip
- circuit board
- motor speed
- parking system
- measuring device
- 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
Links
- 230000005611 electricity Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 101000844751 Metallosphaera cuprina (strain Ar-4) DNA-binding protein 7 Proteins 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 230000001421 changed effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Abstract
The utility model provides a motor speed sensor of vehicle electron parking system, including motor shaft and circuit board, the motor shaft is located the top of circuit board. The utility model discloses still include magnetic ring, hall chip and fixing support, the magnetic ring is fixed to be cup jointed in the motor shaft outside, and on fixing support was fixed in the circuit board, the hall chip set up inside fixing support, and the hall chip is connected with circuit board electricity, and the hall chip is mutually supported with the magnetic ring. The utility model discloses can effectively satisfy electron parking electrical system's needs.
Description
Technical field
The utility model belongs to automobile production processing technique field, the motor speed measuring device of a kind of vehicle electric parking system of specific design.
Background technology
Electronic parking (EPB) is that 8 mistake parking buttons send parking (release) instruction to ECU (Electrical Control Unit), ECU (Electrical Control Unit) controls motor rotation, driven by motor turbine and worm and zip, zip effect on the brake, thus realizes parking (release) function of vehicle.
In electronic parking electric-control system, motor speed is a very important feedback signal, directly can affect parking (release) time and parking power precision.Therefore, need a speed measuring device to realize the feedback of motor real-time rotate speed, and then improve the product quality of electronic parking.
Motor speed measuring device conventional at present has Hall-type and photo-electric.Hall-type structural principle is simple, cost is low but accuracy of measurement is not high; Photoelectric type measuring accurately but take up room large, cost is high.
Utility model content
The purpose of this utility model is exactly the defect for prior art, provides a kind of motor speed measuring device of vehicle electric parking system, to meet the needs of electronic parking electric-control system.
The utility model provides a kind of motor speed measuring device of vehicle electric parking system, comprises motor shaft and circuit board, and motor shaft is positioned at the top of circuit board.The utility model also comprises magnet ring, Hall chip and hold-down support, magnet ring is fixedly sleeved outside in motor shaft, and hold-down support is fixed on circuit board, and Hall chip is arranged at hold-down support inside, Hall chip is electrically connected with circuit board, and Hall chip and magnet ring cooperatively interact.
The outer setting of described hold-down support has pin seat, and the pin of Hall chip is electrically connected with circuit board through pin seat.Hold-down support top is symmetrical arranged finite place piece, and described locating part matches with the top end face of Hall chip.
Described circuit board is provided with MCU, and Hall chip is by its pin and MCU electrical connection.Circuit board is also provided with power supply unit and signal processor, the pin of Hall chip is connected with the input end of signal processor, the output terminal of signal processor is electrically connected with MCU, and power supply unit is electrically connected with Hall chip, signal processor and MCU respectively, is its power supply.
Described Hall chip is arranged at immediately below magnet ring.
Described circuit board is provided with for the hard-wired pilot hole of realizing circuit plate, circuit board is fixed on the shell of electronic parking system by pilot hole.
Magnetic element of the present utility model adopts magnet ring, and is fixed and is socketed on machine shaft.Compared with traditional Alnico of prior art, the utility model improves its stability in electric machine rotation process, improves measurement accuracy.Hall chip of the present utility model adopts hold-down support to fix, and improves the stability of system under vibration operating mode, improves measurement accuracy.Meanwhile, hold-down support is directly fixed on circuit boards by pilot hole.Both precisely define the relative position of magnet ring and Hall element, improve measurement accuracy; In turn save space.Based on above improvement, the utility model both had conventional Hall formula motor speed measuring device in cost, advantage spatially, there is again the advantage of Traditional photovoltaic formula motor speed measuring device in accuracy, meet the requirement of electronic parking system to motor speed measuring.
Accompanying drawing explanation
Fig. 1 is the utility model principle schematic;
Fig. 2 is the utility model structural representation
Wherein, 1-magnet ring, 2-hold-down support, 3-Hall chip, 4-motor shaft, 5-pilot hole, 6-circuit board, 7-MCU, 8-locating part, 9-pin seat, 10-pin.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, is convenient to be well understood to the utility model, but they do not form restriction to the utility model.
As shown in Figure 1, the utility model provides a kind of motor speed measuring device of vehicle electric parking system, and comprise motor shaft 4 and circuit board 6, motor shaft 4 is positioned at the top of circuit board 6.The utility model also comprises magnet ring 1, Hall chip 3 and hold-down support 2, magnet ring 1 is fixedly sleeved outside in motor shaft 4, and hold-down support 2 is fixed on circuit board 6, and it is inner that Hall chip 3 is arranged at hold-down support 2, Hall chip 3 is electrically connected with circuit board 6, and Hall chip 3 and magnet ring 1 cooperatively interact.The outer setting of described hold-down support 2 has pin seat, and pin seat, perpendicular to the outer wall of hold-down support 2, pin seat 9 is evenly provided with four through holes paralleled with hold-down support 2 axis.The pin 10 of Hall chip 3 is electrically connected with circuit board 6 through the through hole on pin seat 9.Described Hall chip 3 is arranged at immediately below magnet ring 1.Described circuit board 6 is provided with for the hard-wired pilot hole 5 of realizing circuit plate 6.Described hold-down support 2 is arranged between two pilot holes 5.Hold-down support 2 top is symmetrically arranged with 2 locating parts 8, and described locating part 8 matches with the top end face of Hall chip 3.Hold-down support is the tubular structure of upper and lower opening.Locating part is the spring structure of end wedgewise.During installation, first hold-down support 2 is welded on circuit board, then Hall chip is inserted hold-down support along locating part inner.After Hall chip installation, the end of Hall chip is arranged in locating part, when ensureing to use, and the installation stability of Hall chip.
Circuit board is also provided with power supply unit and signal processor, and the pin of Hall chip is connected with the input end of signal processor, and the output terminal of signal processor is electrically connected with MCU, and power supply unit is respectively Hall chip, signal processor and MCU and powers.
As shown in Figure 2, magnet ring 1 number of pole-pairs is 4 right.Described circuit board 6 is provided with MCU7, and Hall chip 3 is by its pin and MCU electrical connection.When electric machine rotation, magnet ring 1 rotates and the magnetic field of Hall chip 3 periphery is changed, and Hall effect occurs for magnet ring 1 and Hall chip 3.Hall chip 3 exports according to variation magnetic field pulse electrical signal can to calculate motor according to signal frequency to MCU, MCU rotating speed through signal processor.This pulse electrical signal rotates with motor and produces cyclical variation.If be a pulse by each period definition of voltage, then motor speed calculating formula is:
Motor speed (rev/min)=potential pulse number/magnet ring number of pole-pairs per minute
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. the motor speed measuring device of a vehicle electric parking system, comprise motor shaft (4) and circuit board (6), motor shaft (4) is positioned at the top of circuit board (6), characterized by further comprising magnet ring (1), Hall chip (3) and hold-down support (2), magnet ring (1) is fixedly sleeved outside in motor shaft (4), hold-down support (2) is fixed on circuit board (6), it is inner that Hall chip (3) is arranged at hold-down support (2), Hall chip (3) is electrically connected with circuit board (6), Hall chip (3) and magnet ring (1) cooperatively interact.
2. the motor speed measuring device of vehicle electric parking system according to claim 1, it is characterized in that the outer setting of hold-down support (2) has pin seat (9), the pin of Hall chip (3) is electrically connected with circuit board (6) through pin seat.
3. the motor speed measuring device of vehicle electric parking system according to claim 2, it is characterized in that hold-down support (2) top is symmetrical arranged finite place piece (8), described locating part (8) matches with the top end face of Hall chip (3).
4. the motor speed measuring device of vehicle electric parking system according to claim 2, is characterized in that circuit board (6) is provided with MCU (7), and Hall chip (3) is by its pin and MCU (7) electrical connection.
5. the motor speed measuring device of vehicle electric parking system according to claim 4, it is characterized in that circuit board is also provided with power supply unit and signal processor, the pin of Hall chip is connected with the input end of signal processor, the output terminal of signal processor is electrically connected with MCU, and power supply unit is electrically connected with Hall chip, signal processor and MCU respectively.
6. the motor speed measuring device of vehicle electric parking system according to claim 1, is characterized in that Hall chip (3) is arranged at immediately below magnet ring (1).
7. the motor speed measuring device of vehicle electric parking system according to claim 1, is characterized in that circuit board (6) is provided with for realizing circuit plate (6) hard-wired pilot hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520891395.9U CN205176050U (en) | 2015-11-10 | 2015-11-10 | Motor speed sensor of vehicle electron parking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520891395.9U CN205176050U (en) | 2015-11-10 | 2015-11-10 | Motor speed sensor of vehicle electron parking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205176050U true CN205176050U (en) | 2016-04-20 |
Family
ID=55740026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520891395.9U Expired - Fee Related CN205176050U (en) | 2015-11-10 | 2015-11-10 | Motor speed sensor of vehicle electron parking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205176050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444719A (en) * | 2018-12-06 | 2019-03-08 | 浙江精通自动控制技术有限公司 | A kind of burning of skylight control circuit board and function test fixture and method |
-
2015
- 2015-11-10 CN CN201520891395.9U patent/CN205176050U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444719A (en) * | 2018-12-06 | 2019-03-08 | 浙江精通自动控制技术有限公司 | A kind of burning of skylight control circuit board and function test fixture and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |