CN201740794U - Detection auxiliary device for vehicle speed sensor - Google Patents
Detection auxiliary device for vehicle speed sensor Download PDFInfo
- Publication number
- CN201740794U CN201740794U CN201020223788XU CN201020223788U CN201740794U CN 201740794 U CN201740794 U CN 201740794U CN 201020223788X U CN201020223788X U CN 201020223788XU CN 201020223788 U CN201020223788 U CN 201020223788U CN 201740794 U CN201740794 U CN 201740794U
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- vehicle speed
- speed sensor
- signal
- servicing unit
- switch
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Abstract
The utility model provides a detection auxiliary device for a vehicle speed sensor, which is used for detecting the performances of the vehicle speed sensor. Interfaces of the vehicle speed sensor comprise a power supply end, a signal end and a ground end. The detection auxiliary device comprises a power supply output end, a signal input end, a grounding end, a first power supply and a first switch; the power supply output end, the signal input end and the grounding end are respectively used for connecting with the power supply end, the signal end and the ground end of the vehicle speed sensor; the signal input end and the grounding end are simultaneously connected to an oscilloscope; the first power supply is used for supplying a direct current power; and the first switch is connected to the power supply output end and can be selectively connected to the first power supply. Due to the detection auxiliary device for the vehicle speed sensor, the working efficiency can be improved and the field service quality can be effectively enhanced. Simultaneously, the detection auxiliary device can also be used for business promotion and demonstration of working principle of the vehicle speed sensor.
Description
Technical field
The utility model relates to a kind of detection servicing unit, and is particularly related to a kind of input servicing unit of vehicle speed sensor.
Background technology
Vehicle speed sensor is used for detecting the speed of a motor vehicle of automobile, and controlling computer utilizes this input signal to control engine idle, the torque converter locking of automatic transmission, other functions such as the switching of automatic gearbox gear shifting and cooling fan of engine and the constant speed of cruising.
Magneto-electric and photo-electric vehicle speed sensor are to use two kinds of maximum vehicle speed sensor on automobile.The output signal of vehicle speed sensor can be the magneto-electric AC signal, also can be Hall-type digital signal or photo-electric digital signal.
Type vehicle speed sensor at all events, its waveform all can change along with the difference of the speed of a motor vehicle, and for example the magneto-electric vehicle speed sensor is along with the increase of the speed of a motor vehicle, and the peak value of its waveform is high more, and frequency is also fast more; Photo-electric vehicle speed sensor for example again, along with the speed of a motor vehicle only changes signal frequency, and the dutycycle of signal and amplitude all remain unchanged under any speed of a motor vehicle.
Vehicle speed sensor is self-evident for the importance of automobile.At the entrucking scene, if need the inspection vehicle speed sensors, then need the signal end and the earth terminal of vehicle speed sensor are inserted on the oscillograph, the slip-stick artist is able to according to the waveform that shows on the oscillograph, judges the quality of vehicle speed sensor.
Yet, in testing process, provide testing tool without any utility appliance at present, for example the supply voltage of Bian Huaing is to measure the performance of vehicle speed sensor under overvoltage condition etc.When the slip-stick artist need detect the performance of vehicle speed sensor under the different operating environment, need manually to connect complicated circuit, very inconvenience.
The utility model content
The utility model proposes a kind of detection servicing unit of vehicle speed sensor, increase work efficiency, can effectively improve on-the-spot service quality.Simultaneously, this detection servicing unit also can be used for commercial affairs to be promoted, the principle of work of demonstration vehicle speed sensor.
In order to achieve the above object, the utility model proposes a kind of detection servicing unit of vehicle speed sensor, be used for the performance of inspection vehicle speed sensors.The interface of vehicle speed sensor comprises power end, signal end and ground end.The detection servicing unit comprises: power output end, signal input part and earth terminal, be respectively applied for the power end, signal end and the ground end that connect vehicle speed sensor, and synchronous signal input end and earth terminal are connected to oscillograph; First power supply provides direct supply; First switch is connected to power output end, and first switch is linked optionally with first power supply.
Say that further the detection servicing unit of vehicle speed sensor also comprises external power source, first switch selectively connects external power source.
Say that further in the detection servicing unit of vehicle speed sensor, the voltage range of external power source is between 12V～28V.
Say that further the detection servicing unit of vehicle speed sensor also comprises second switch, is connected to signal input part; Signal power source, second switch selectively connects signal power source.
Say that further the detection servicing unit of vehicle speed sensor also comprises adjustable resistor, between connection and signal input part and second switch.
Say that further in the detection servicing unit of vehicle speed sensor, first power source voltage is 12V.
Say that further in the detection servicing unit of vehicle speed sensor, oscillograph is an automobile instrument panel.
Utilize the detection servicing unit of the vehicle speed sensor that the utility model provides, vehicle speed sensor is connected to oscillograph, the signal level of its output signal, dutycycle etc. are examined and determine, and can detect the performance of vehicle speed sensor under superpotential, the excess current duty, increase work efficiency, can effectively improve on-the-spot service quality.Simultaneously, this detection servicing unit also can be used for commercial affairs to be promoted, the principle of work of demonstration vehicle speed sensor.
Description of drawings
Figure 1 shows that the function block schematic diagram of the utility model preferred embodiment.
Embodiment
In order more to understand technology contents of the present utility model, especially exemplified by specific embodiment and cooperate appended graphic being described as follows.
Please, Figure 1 shows that the function block schematic diagram of the utility model preferred embodiment referring to Fig. 1.
The utility model proposes a kind of detection servicing unit 200 of vehicle speed sensor, be used for the performance of inspection vehicle speed sensors 100.
The interface of vehicle speed sensor 100 mainly comprises power end 101, signal end 102 and ground end 103.Power end 101 is used to receive supply voltage, and the voltage of vehicle speed sensor 100 is essentially 12V in the automobile, but, is that the voltage that the power end 101 of vehicle speed sensor 100 receives may be between 12V～28V starting or stopping.Therefore, the performance of inspection vehicle speed sensors 100 under superpotential (power end voltage is greater than 12V) environment also is crucial.The signal end 102 of vehicle speed sensor 100 and ground end 103 are used to be connected to automobile instrument panel, so that automobile instrument panel can read the signal that vehicle speed sensor 100 is exported, thereby represent to the user.
Please refer to Fig. 1, the interface that the utility model proposes a kind of detection servicing unit 200 of vehicle speed sensor mainly comprises power output end 201, signal input part 202 and earth terminal 203.Power output end 201, signal input part 202 and earth terminal 203 are connected to power end 101, signal end 102 and the ground end 103 of vehicle speed sensor 100 respectively.
The signal input part 202 and the earth terminal 203 that detect servicing unit 200 are connected to oscillograph 300, therefore whether the user can read the signal that the signal end 102 of vehicle speed sensor 100 is exported from oscillograph 300, correct to judge parameters such as its dutycycle, level, slope.
Detect servicing unit 200 and also comprise first power supply 204, direct supply is provided, generally the voltage of first power supply 204 is 12V.Power output end 201 is connected to first switch, 206, the first switchs 206 and selectively is connected to first power supply 204.Power output end 201 is connected to first power supply 204 by first switch 206, in order to when power end 101 is connected to power output end 201, provides vehicle speed sensor 100 supply voltages.
Detect servicing unit 200 and also comprise signal power source 207, signal power source 207 selectively is connected to signal input part 202 by second switch 208.When the user need not the performance of inspection vehicle speed sensors 100 under overcurrent situations, utilize being connected of second switch, 208 shutoff signal power supplys 207 and signal input part 202; When the user needs the performance of inspection vehicle speed sensors 100 under overcurrent situations, utilize being connected of second switch, 208 connection signal power supplys 207 and signal input part 202, in order to the performance of inspection vehicle speed sensors 100 under the superpotential situation of signal.
Further, second switch 208 is provided with adjustable resistor 209 with signal input part 202, by regulating adjustable resistor 209, the performance of inspection vehicle speed sensors 100 under the signal overcurrent situations.
It should be noted that oscillograph 300 also can be panel board in the present embodiment, signal input part 202 and the earth terminal 203 that detects servicing unit 200 is connected to the panel board respective lines, then can observe testing result from panel board.
When the scene is detected, can carry out following operation:
If vehicle speed sensor 100 is installed in the car, then signal end 102 and the ground end 103 with vehicle speed sensor 100 is connected to signal input part 202 and the earth terminal 203 that detects servicing unit 200, simultaneously, the signal input part 202 and the earth terminal 203 that detect servicing unit 200 are connected to oscillograph 300, directly under vehicle speed sensor 100 duties, detect, can observe the waveform of the signal of vehicle speed sensor 100 outputs from the oscillograph 300.
If vehicle speed sensor 100 is not installed in the car, power end 100, signal end 102 and the ground end 103 of vehicle speed sensor 100 are connected to power output end 201, signal input part 202 and the earth terminal 203 that detects servicing unit 200 respectively, first switch 206 connects first power supply 204 or external power source 205, by the rotating shaft of direct current generator or hand rotation vehicle speed sensor 100, parameters such as the level of observation signal, dutycycle and slope.
Duty when needing inspection vehicle speed sensors 100 at overvoltage of power supply, power end 100, signal end 102 and the ground end 103 of vehicle speed sensor 100 are connected to power output end 201, signal input part 202 and the earth terminal 203 that detects servicing unit 200 respectively, first switch 206 is switched to connection external power source 205, parameters such as the level of observation signal, dutycycle and slope.
Duty when needing inspection vehicle speed sensors 100 in the signal superpotential switches to connection signal power source 207, parameters such as the level of observation signal, dutycycle and slope with second switch 208.
Duty when needing inspection vehicle speed sensors 100 in the signal excess current switches to connection signal power source 207 with second switch 208, and regulates adjustable resistor 209, parameters such as the level of observation signal, dutycycle and slope.
The detection servicing unit of the vehicle speed sensor that the utility model provides, vehicle speed sensor is connected to oscillograph, the signal level of its output signal, dutycycle etc. are examined and determine, and can detect the performance of vehicle speed sensor under superpotential, the excess current duty, increase work efficiency, can effectively improve on-the-spot service quality.Simultaneously, this detection servicing unit also can be used for commercial affairs to be promoted, the principle of work of demonstration vehicle speed sensor.
Though the utility model discloses as above with preferred embodiment, so it is not in order to limit the utility model.Have in the technical field under the utility model and know the knowledgeable usually, in not breaking away from spirit and scope of the present utility model, when being used for a variety of modifications and variations.Therefore, protection domain of the present utility model is as the criterion when looking claims person of defining.
Claims (7)
1. the detection servicing unit of a vehicle speed sensor is used for the performance of inspection vehicle speed sensors, and the interface of described vehicle speed sensor comprises power end, signal end and ground end, it is characterized in that, detects servicing unit and comprises:
Power output end, signal input part and earth terminal are respectively applied for the power end, signal end and the ground end that connect described vehicle speed sensor, and described signal input part and earth terminal are connected to oscillograph simultaneously;
First power supply provides direct supply; And
First switch is connected to described power output end, and described first switch is linked optionally with described first power supply.
2. the detection servicing unit of vehicle speed sensor according to claim 1 is characterized in that, also comprises:
External power source, described first switch selectively connects described external power source.
3. the detection servicing unit of vehicle speed sensor according to claim 2 is characterized in that, the voltage range of wherein said external power source is between 12V～28V.
4. the detection servicing unit of vehicle speed sensor according to claim 1 is characterized in that, also comprises:
Second switch is connected to described signal input part; And
Signal power source, described second switch selectively connects described signal power source.
5. the detection servicing unit of vehicle speed sensor according to claim 1 is characterized in that, also comprises:
Adjustable resistor is between connection and described signal input part and described second switch.
6. the detection servicing unit of vehicle speed sensor according to claim 1 is characterized in that, wherein, described first power source voltage is 12V.
7. the detection servicing unit of vehicle speed sensor according to claim 1 is characterized in that, wherein said oscillograph is an automobile instrument panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020223788XU CN201740794U (en) | 2010-06-11 | 2010-06-11 | Detection auxiliary device for vehicle speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020223788XU CN201740794U (en) | 2010-06-11 | 2010-06-11 | Detection auxiliary device for vehicle speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201740794U true CN201740794U (en) | 2011-02-09 |
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ID=43556072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020223788XU Expired - Lifetime CN201740794U (en) | 2010-06-11 | 2010-06-11 | Detection auxiliary device for vehicle speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201740794U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782917A (en) * | 2016-08-24 | 2018-03-09 | 联合汽车电子有限公司 | The fault diagnosis and processing method of vehicle speed sensor |
| CN107884595A (en) * | 2016-12-29 | 2018-04-06 | 比亚迪股份有限公司 | Vehicle, speed acquisition device and its self-checking unit and self checking method |
| CN108241071A (en) * | 2016-12-23 | 2018-07-03 | 大陆汽车电子（连云港）有限公司 | There are the test system and method for the velocity sensor of angle detecting |
-
2010
- 2010-06-11 CN CN201020223788XU patent/CN201740794U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782917A (en) * | 2016-08-24 | 2018-03-09 | 联合汽车电子有限公司 | The fault diagnosis and processing method of vehicle speed sensor |
| CN107782917B (en) * | 2016-08-24 | 2020-01-14 | 联合汽车电子有限公司 | Fault diagnosis and processing method for vehicle speed sensor |
| CN108241071A (en) * | 2016-12-23 | 2018-07-03 | 大陆汽车电子（连云港）有限公司 | There are the test system and method for the velocity sensor of angle detecting |
| CN107884595A (en) * | 2016-12-29 | 2018-04-06 | 比亚迪股份有限公司 | Vehicle, speed acquisition device and its self-checking unit and self checking method |
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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: SHANGHAI DEKE ELECTRONIC INSTRUMENT CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110221 Address after: 200093 No. 2100, Jiangpu Road, Shanghai Co-patentee after: Shanghai Delco Electronics & Instrumentation Co., Ltd. Patentee after: Shanghai Sentech Automotive Electronic Co.,Ltd. Address before: 200093 No. 2100, Jiangpu Road, Shanghai Patentee before: Shanghai Sentech Automotive Electronic Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |