CN202793412U - Crankshaft position sensor - Google Patents
Crankshaft position sensor Download PDFInfo
- Publication number
- CN202793412U CN202793412U CN 201220329350 CN201220329350U CN202793412U CN 202793412 U CN202793412 U CN 202793412U CN 201220329350 CN201220329350 CN 201220329350 CN 201220329350 U CN201220329350 U CN 201220329350U CN 202793412 U CN202793412 U CN 202793412U
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- CN
- China
- Prior art keywords
- main body
- circuit board
- shell
- chip
- hall chip
- 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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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model relates to a crankshaft position sensor, which comprises a main body, a shell, a sealing ring, a permanent magnet, a chip, a circuit board and pins. The circuit board is arranged in a square slot on the side surface of the main body. A Hall chip is arranged in a square slot on the front end surface of the main body. The permanent magnet positioned right above the Hall chip is arranged in a circular slot on the side surface of the main body. The Hall chip is connected with the circuit board through brazing. The circuit board is also connected with three pins on the main body through brazing. The main body and the shell are connected together through the ultrasonic welding manner. The shell is filled with silica gel. The crankshaft position sensor has the advantages of simple structure and reasonable design and ensures the accuracy and the consistency of output signals. Meanwhile, the output signals are square-wave signals and are directly provided to an electronic control unit (ECU) without the need of waveform shaping. Tests on products show that the precision of the output signals is 1 degree and the consistency of the output signals is high.
Description
Technical field
The utility model relates to a kind of crankshaft position sensor, detects the crankshaft position sensor that speed of crankshaft and position obtain engine speed information thereby particularly relate to a kind of Hall effect principle that adopts.
Background technology
At present, the sensor that is widely used in various car engine machine testing speeds of crankshaft and position is the magneto-electric principle of induction, the coiling of inner employing enameled wire loop, its output signal is sinusoidal signal, exist accuracy of detection low, need to carry out the problem of signal processing and shaping, affect the control accuracy of igniting control system for engine.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, can the output Shaping signal, and can guarantee the crankshaft position sensor of signal accuracy.
In order to achieve the above object, the technical solution adopted in the utility model is: comprise main body, shell, O-ring seal, permanent magnet, chip, circuit board, contact pin, in the square groove of described main body side circuit board is housed, in the body front end face square groove Hall chip is housed, permanent magnet is positioned at the main body side circular groove directly over the Hall chip, Hall chip is connected with the circuit board soldering, circuit board also is connected with three contact pin solderings on the main body, main body is connected by the ultrasonic soldering mode with shell, and is perfused with silica gel in the shell.
The utility model has the advantages that:
Simple in structure, reasonable in design, can guarantee precision and the consistance of product output signal, and output signal is square wave, directly offer ECU and use, do not need to carry out wave shaping, be 1 degree by the product test output signal accuracy, and consistance is higher.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the variation synoptic diagram of magnetic flux in the magnetic circuit of the present utility model;
Fig. 3 is sensor output signal voltage synoptic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
By Fig. 1-Fig. 3 as can be known, the utility model comprises main body 1, shell 2, O-ring seal 3, permanent magnet 4, chip 5, circuit board 6, contact pin 7, in the described main body 1 side square groove circuit board 6 is housed, in the main body 1 front end face square groove Hall chip 5 is housed, permanent magnet 4 is positioned at the main body 1 side circular groove directly over the Hall chip 5, Hall chip 5 is connected with circuit board 6 solderings, circuit board 6 also is connected with three contact pin 7 solderings on the main body 1, main body 1 is connected by the ultrasonic soldering mode with shell 2, and is perfused with silica gel in the shell 2.The utility model circuit board 6 is packed in main body 1 square groove, permanent magnet 4 is packed in main body 1 circular groove, Hall chip 5 is positioned under the permanent magnet 4, circuit board 6 carries out soldering with the pin of Hall chip 5 and three contact pins 7 on the main body 1 respectively, three contact pins 7 connect Engine ECU, thereby flow to Engine ECU by contact pin after signal process circuit board 6 shapings that realize Hall chip 5 is detected.Simultaneously, main body 1 and shell 2 concentric interference fit, and connect by the ultrasonic soldering mode, can guarantee to connect reliable.Be perfused with silica gel between shell 2 and the main body 1, seal.
The utility model is installed on the engine, when the signal wheel rotates, forms the magnetic circuit of a variation between signal wheel and the sensor internal permanent magnet, as shown in Figure 2.When double wedge during over against sensor probe, the magnetic flux of permanent magnet just consists of the loop through Hall chip and double wedge, the magnetic flux value that the magnetic flux that passes through chip that Hall chip will detect this moment and chip internal are set compares, when greater than setting value, the transistor turns of chip controls output stage, sensor output signal voltage is low level, as shown in Figure 3, for example, when supply voltage was 5V, low level signal voltage was 0.1～0.4 V.When double wedge leaves sensor probe, the magnetic flux of permanent magnet consists of the loop through Hall chip, this moment by chip magnetic flux less than setting value, the transistor of chip controls output stage is closed, sensor output signal voltage is high level, for example, when supply voltage was 5V, high level signal voltage was 4.8～5.0 V.In addition, output is high level or low level during the relative double wedge of sensor probe, and namely the output signal logical relation corresponding with signal wheel double wedge can require to set accordingly according to different ECU.
The signal that crankshaft position sensor handle of the present utility model detects is through after the inner modulation, output signal is square wave, solved the larger problem of old-fashioned magnetoelectric sensor output sinusoidal signal error, signal accuracy by modulation output is higher, satisfy the accuracy requirement of car engine ignition control, make gas fuel burning more abundant, satisfy automobile dynamic quality and exhaust emissions index.
Claims (1)
1. crankshaft position sensor, comprise main body (1), shell (2), O-ring seal (3), permanent magnet (4), chip (5), circuit board (6), contact pin (7), it is characterized in that: in the square groove of described main body (1) side circuit board (6) is housed, in main body (1) the front end face square groove Hall chip (5) is housed, permanent magnet (4) is positioned at main body (1) the side circular groove directly over the Hall chip (5), Hall chip (5) is connected with circuit board (6) soldering, circuit board (6) also is connected with three contact pins (7) soldering on the main body (1), main body (1) is connected by the ultrasonic soldering mode with shell (2), and is perfused with silica gel in the shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329350 CN202793412U (en) | 2012-07-09 | 2012-07-09 | Crankshaft position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329350 CN202793412U (en) | 2012-07-09 | 2012-07-09 | Crankshaft position sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793412U true CN202793412U (en) | 2013-03-13 |
Family
ID=47820658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220329350 Expired - Fee Related CN202793412U (en) | 2012-07-09 | 2012-07-09 | Crankshaft position sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202793412U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767945A (en) * | 2017-01-10 | 2017-05-31 | 瑞安市科丰电子科技有限公司 | Automobile crane position sensor |
| CN112729101A (en) * | 2020-12-24 | 2021-04-30 | 奇瑞汽车股份有限公司 | Position sensor mounting structure and vehicle |
-
2012
- 2012-07-09 CN CN 201220329350 patent/CN202793412U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767945A (en) * | 2017-01-10 | 2017-05-31 | 瑞安市科丰电子科技有限公司 | Automobile crane position sensor |
| CN112729101A (en) * | 2020-12-24 | 2021-04-30 | 奇瑞汽车股份有限公司 | Position sensor mounting structure and vehicle |
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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: 20130313 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |