CN201594119U - Electrical parameter testing device for automobile hub speed sensor - Google Patents
Electrical parameter testing device for automobile hub speed sensor Download PDFInfo
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- CN201594119U CN201594119U CN2009202587382U CN200920258738U CN201594119U CN 201594119 U CN201594119 U CN 201594119U CN 2009202587382 U CN2009202587382 U CN 2009202587382U CN 200920258738 U CN200920258738 U CN 200920258738U CN 201594119 U CN201594119 U CN 201594119U
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- speed sensor
- electrical parameter
- data processor
- rotation speed
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Abstract
The utility model relates to an electrical parameter testing device for an automobile hub speed sensor. The device comprises a voltage input interface and a common ground connecting interface corresponding to the speed sensor, wherein the two interfaces are connected with an input terminal and a ground terminal of a data processor respectively, and a measuring switch and a testing resistance are connected between the input terminal and the ground terminal of the data processor. The utility model can realize the testing data acquisition of a passive ABS automobile hub speed sensor.
Description
Technical field
The utility model relates to the measuring technology of bearing apparatus, is specifically related to a kind of vehicle hub rotation speed sensor electrical parameter test device.
Background technology
Automobile hub unit ABS speed probe divides two kinds of active and passive types.Active speed probe adopts special-purpose magnetosensitive rotating speed electronic component, the proportional pulse signal of output frequency and rotating speed; Passive type speed probe utilization generator principle, coil and magnetosphere relative motion, output amplitude and rotating speed are proportional, frequency and rotating speed and enclose the proportional AC sine signal of magnetic number.
Automotive hub ABS passive type rotation speed sensor electrical parameter mainly comprises coil resistance, inductance, rotating speed voltage constant and four major parameters of a circle magnetic number.Be illustrated in figure 1 as the electric part schematic diagram of automotive hub ABS passive type speed probe, wherein r is the lead internal resistance, L is a coil inductance, ω is a hub angle of rotation frequency, and n is the hub rotating speed, and k is the rotating speed voltage constant, V is a voltage source, its size is V=kn (k is the rotating speed voltage coefficient) with the pass of rotation speed n, and N is speed probe one a circle magnetic number, the relation of ω and n:
At present, be used for the related electric parameter that testing automobile wheel hub ABS passive type speed probe can not obtain speed probe; Existing LCR automatic measuring instrument employing electronics and computer technology are to the precision measurement that carries out of conventional electrical appliance element inductance L, capacitor C and resistance R, and complex structure costs an arm and a leg.
The utility model content
The purpose of this utility model is to provide a kind of vehicle hub rotation speed sensor electrical parameter test device, with the collection of the test data that realizes automotive hub ABS passive type speed probe.
For achieving the above object, the technical solution of the utility model is to provide a kind of vehicle hub rotation speed sensor electrical parameter test device, this device comprises voltage input interface corresponding with speed probe and connecting interface altogether, two interfaces are connected with earth terminal with the input end of data processor respectively, are connected with the cascaded structure of measuring switch and test resistance between the input end of data processor and the earth terminal.
Be provided with low-pass filter circuit and shaping circuit between the input end of data processor and the voltage input interface.
For further optimization, measuring switch is a relay switch, by the data processor controlled folding; Test resistance is a precision resistance.
Vehicle hub rotation speed sensor electrical parameter test device of the present utility model comprises voltage input interface corresponding with speed probe and connecting interface altogether, two interfaces are connected with earth terminal with the input end of data processor respectively, be connected with measuring switch and test resistance between the input end of data processor and the earth terminal, can be by closure and the disconnection of pilot relay switch J1, realize the data sampling of computing machine to the open loop output signal of ABS passive type speed probe and the closed loop output signal under specific resistance, simple in structure, cost is low, and is automobile hub unit ABS coil resistance, inductance, the calculating of a rotating speed voltage constant and a circle magnetic number provides the accurate data source; Be provided with low-pass filter circuit and shaping circuit between the input end of data processor and the voltage input interface,, improved accuracy of test for data processor provides waveform signal preferably.
Description of drawings
Fig. 1 is the electrical schematic diagram of automobile hub unit ABS passive type speed probe;
Fig. 2 is automobile hub unit speed probe test philosophy figure.
Embodiment
As shown in Figure 2, the vehicle hub rotation speed sensor electrical parameter test device of present embodiment, comprise voltage input interface A corresponding and connecting interface B altogether with speed probe, two interfaces are connected with earth terminal AGND with the input end ADO of computing machine 1 respectively, be connected with the cascaded structure of relay switch J1 and precision resistance R between the input end ADO of computing machine 1 and the earth terminal AGND, be provided with low-pass filter circuit 3 and shaping circuit 4 between the input end ADO of computing machine 1 and the voltage input interface A; More easily electric parameter is detected for more accurate in addition, the control port of frequency converter 7 is connected with the control port C of computing machine 1, the driving circuit of frequency converter 7 is connected with the driving circuit of motor 6, accurately control motor 6 driving automobile hubs 5 rotate under friction speed, with frequency converter 7 external power supplys, motor 6 is driven.
Test process, closure and the disconnection of pilot relay switch J1 realize that computing machine input end ADO test voltage changes, thereby better provide data preferably for calculating electric parameter under the condition of fc-specific test FC resistance.
When work, open loop output signal and J1 closed loop output signal when closed of timing sampling automotive hub ABS passive type speed probe when J1 disconnects under twice different rotating speeds respectively, handle and correlation computations by the sampled data that automotive hub is rotated a circle, obtain automobile hub unit ABS coil resistance, inductance, rotating speed voltage constant and four major parameters of a circle magnetic number.
In the foregoing description, adopt computing machine, can certainly adopt microprocessor to carry out data processing as data processor.
The unimodal number of all signals is that the calculating of the magnetic number N of speed probe can be added up the acquisition pulse number and obtains in the present embodiment, can also adopt additive method, as the statistics individual pulse cycle, thereby calculates the size of N value.The calculating of the magnetic number N of speed probe belongs to known knowledge for the technician in abs sensor field, is not repeated herein.
In the present embodiment voltage effective value be calculated as the sector technician common practise, be not repeated herein.
Claims (4)
1. vehicle hub rotation speed sensor electrical parameter test device, comprise voltage input interface corresponding and connecting interface altogether with speed probe, two interfaces are connected with earth terminal with the input end of data processor respectively, it is characterized in that: the cascaded structure that is connected with measuring switch and test resistance between the input end of described data processor and the earth terminal.
2. vehicle hub rotation speed sensor electrical parameter test device as claimed in claim 1 is characterized in that: be provided with low-pass filter circuit and shaping circuit between the input end of data processor and the voltage input interface.
3. vehicle hub rotation speed sensor electrical parameter test device as claimed in claim 2 is characterized in that: described measuring switch is a relay switch, by the data processor controlled folding.
4. vehicle hub rotation speed sensor electrical parameter test device as claimed in claim 3 is characterized in that: described test resistance is a precision resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202587382U CN201594119U (en) | 2009-12-02 | 2009-12-02 | Electrical parameter testing device for automobile hub speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202587382U CN201594119U (en) | 2009-12-02 | 2009-12-02 | Electrical parameter testing device for automobile hub speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594119U true CN201594119U (en) | 2010-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202587382U Expired - Lifetime CN201594119U (en) | 2009-12-02 | 2009-12-02 | Electrical parameter testing device for automobile hub speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727868A (en) * | 2012-10-15 | 2014-04-16 | 上海大众汽车有限公司 | System for measuring performance indexes of inductive sensor |
-
2009
- 2009-12-02 CN CN2009202587382U patent/CN201594119U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727868A (en) * | 2012-10-15 | 2014-04-16 | 上海大众汽车有限公司 | System for measuring performance indexes of inductive sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180516 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: Luoyang Bearing Research Institute Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: Zhouyan Science and Technology Co., Ltd., Luoyang |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100929 |
|
| CX01 | Expiry of patent term |