CN103675353A - Signal testing device of fixed frequency sensor - Google Patents
Signal testing device of fixed frequency sensor Download PDFInfo
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- CN103675353A CN103675353A CN201210321723.2A CN201210321723A CN103675353A CN 103675353 A CN103675353 A CN 103675353A CN 201210321723 A CN201210321723 A CN 201210321723A CN 103675353 A CN103675353 A CN 103675353A
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Abstract
A signal testing device of a fixed frequency sensor comprises a motor, a signal panel, a test platform, a sensor fixing frame, a power supply, an oscilloscope and a shaping circuit, wherein the signal panel adopts a disc-shaped structure; a plurality of alternated panel teeth are formed at the periphery of the disc-shaped structure; a motor shaft is fixed at the center position of the signal panel; the signal panel is driven by the motor, and rotates coaxially with the motor shaft; the sensor is used for collecting signals of the signal panel mounted on the motor and rotating at a fixed speed; the panel teeth at the periphery of the signal panel have a space therebetween. The signal testing device provided by the invention can determine whether the sensor is normal in signal collection or not by comparing the formed square wave collected by sensing the panel teeth and space transformation through the sensor with prospective parameters of the sensor, and has the advantages of less detection time, visible detection results, and capability of improving production detection efficiency.
Description
Technical field
The present invention relates to the technical field that sensor detects, is a kind of working environment that utilizes the signal panels analog sensor of fixed rotating speed specifically, thus the signal-testing apparatus of the fixed frequency sensor that sensor parameters is detected in advance.
Background technology
The type of speed probe is a lot, because of Hall element there is contactless, long-life, high reliability, no-spark, without self-sustained oscillation, temperature performance is good, contamination resistance is strong, simple structure, firm, volume is little, the advantage such as shock-resistant, so select Hall effect proximity sensor as speed probe.This sensor is on-off element, is directly output as pulse duration frequency signal, but owing to there being electromagnetic noise interference, must carry out filtering and shaping to signal, improves and gathers accuracy and antijamming capability.Signal after processing converts the square-wave signal of standard to, and the input capture function by single-chip microcomputer can accurately obtain its pulse generation time, for control module computing and control provide rotating speed and top dead centre reference signal.
Hall revolution speed transducer is to utilize metal of Hall effect principle work or wafer to be placed in magnetic field, magnetic field is perpendicular to thin slice, when thin slice passes to electric current, on the two sides of thin slice, will produce a micro-Hall voltage, if change the intensity in magnetic field, the size of Hall voltage also changes thereupon, when magnetic field disappears, and Hall voltage vanishing.The signal of Hall effect tachometric transducer output is rectangular pulse signal, is well suited for digital control system, and antijamming capability is strong.Sensor output voltage signal stabilization, as long as there is magnetic field, always Hall element produces identical voltage, and the size of output signal voltage and rotating speed are irrelevant, even under low speed state, still can obtain higher accuracy in detection.
In prior art, do not provide the technical scheme how Hall element being detected, thereby cannot learn that whether the product sensor of producing is normal, and how to simulate that tach signal tests sensor be the problem facing in practical application.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of working environment that utilizes the signal panels analog sensor of fixed rotating speed, thus the signal-testing apparatus of the fixed frequency sensor that sensor parameters is detected in advance.
The technical scheme that the present invention takes for the technical matters existing in solution known technology is:
The signal-testing apparatus of fixed frequency sensor of the present invention, comprising: motor, and by power drives, the rotation of drive motor axle; Signal panels, form disk-like structure, form a plurality of alternate dish teeth in the periphery of disk-like structure, and center and the motor shaft of signal panels are fixed, by driven by motor and with motor shaft coaxial rotating; Test platform, upper plane fixed electrical machinery and fixing rack for sensor; Fixing rack for sensor, is arranged on test platform, fixation of sensor, the signal panels on the corresponding motor in its position; Power supply is motor and sensor power supply; Oscillograph, is connected with sensor to be measured, gathers and record the waveform that shows working sensor; Shaping circuit, connects and is arranged between sensor to be measured and oscillograph, and the work wave collecting is carried out to shaping.
The present invention can also be by the following technical solutions:
Above-mentioned motor is fixed rotating speed motor.
The dish tooth size of described signal panels periphery and respectively to coil the space length reserving between tooth identical.
Advantage and good effect that the present invention has are:
In the signal-testing apparatus of fixed frequency sensor of the present invention, by sensor collection, be arranged on the signal of the signal panels that rotate with fixed rotating speed on motor, between the outer repeater tooth of signal panels, leave space, thereby tooth and spatial alternation gather the square wave of formation and the parameter of sensor expection compares to coiling to utilize sensor sensing, whether the signals collecting that can draw sensor is normal, testing process holding time is few, and testing result is intuitively visible, has improved the efficiency of production testing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the signal-testing apparatus of fixed frequency sensor of the present invention;
Fig. 2 is the structural representation of signal panels in the signal-testing apparatus of fixed frequency sensor of the present invention.
Embodiment
Referring to drawings and Examples, the present invention will be described in detail.
Fig. 1 is the structural representation of the signal-testing apparatus of fixed frequency sensor of the present invention; Fig. 2 is the structural representation of signal panels in the signal-testing apparatus of fixed frequency sensor of the present invention.
As shown in Figure 1 and Figure 2, the signal-testing apparatus of fixed frequency sensor of the present invention, comprising: motor 1, and by power drives, 3 rotations of drive motor axle; Signal panels 2, form disk-like structure, form a plurality of alternate dish teeth 4 in the periphery of disk-like structure, and center and the motor shaft of signal panels are fixed, by driven by motor and with motor shaft coaxial rotating; Test platform 5, upper plane fixed electrical machinery and fixing rack for sensor 6; Fixing rack for sensor 6, is arranged on test platform, fixation of sensor, the signal panels on the corresponding motor in its position; Power supply is motor 1 and sensor 7 power supplies; Oscillograph (not shown), is connected with sensor to be measured, gathers and record the waveform that shows working sensor; Shaping circuit (not shown), connects and is arranged between sensor to be measured and oscillograph, and the work wave collecting is carried out to shaping.
Motor is fixed rotating speed motor, and the rotating speed that drives signal panels to rotate remains unanimously, produces fixing frequency signal.
The dish tooth size of signal panels periphery and respectively to coil the space length reserving between tooth identical.
In the signal-testing apparatus of fixed frequency sensor of the present invention, by sensor collection, be arranged on the signal of the signal panels that rotate with fixed rotating speed on motor, between the outer repeater tooth of signal panels, leave space, thereby tooth and spatial alternation gather the square wave of formation and the parameter of sensor expection compares to coiling to utilize sensor sensing, whether the signals collecting that can draw sensor is normal, testing process holding time is few, and testing result is intuitively visible, has improved the efficiency of production testing.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention with preferred embodiment openly as above, yet, not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (3)
1. a signal-testing apparatus for fixed frequency sensor, is characterized in that, comprising: motor, and by power drives, the rotation of drive motor axle; Signal panels, form disk-like structure, form a plurality of alternate dish teeth in the periphery of disk-like structure, and center and the motor shaft of signal panels are fixed, by driven by motor and with motor shaft coaxial rotating; Test platform, upper plane fixed electrical machinery and fixing rack for sensor; Fixing rack for sensor, is arranged on test platform, fixation of sensor, the signal panels on the corresponding motor in its position; Power supply is motor and sensor power supply; Oscillograph, is connected with sensor to be measured, gathers and record the waveform that shows working sensor; Shaping circuit, connects and is arranged between sensor to be measured and oscillograph, and the work wave collecting is carried out to shaping.
2. the signal-testing apparatus of fixed frequency sensor according to claim 1, is characterized in that: above-mentioned motor is fixed rotating speed motor.
3. the signal-testing apparatus of fixed frequency sensor according to claim 1, is characterized in that: the dish tooth size of signal panels periphery and respectively to coil the space length reserving between tooth identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321723.2A CN103675353A (en) | 2012-09-04 | 2012-09-04 | Signal testing device of fixed frequency sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321723.2A CN103675353A (en) | 2012-09-04 | 2012-09-04 | Signal testing device of fixed frequency sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103675353A true CN103675353A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210321723.2A Pending CN103675353A (en) | 2012-09-04 | 2012-09-04 | Signal testing device of fixed frequency sensor |
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| CN (1) | CN103675353A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248997A (en) * | 2016-08-22 | 2016-12-21 | 沈阳华创风能有限公司 | A kind of speed probe test equipment |
| CN113533773A (en) * | 2021-08-17 | 2021-10-22 | 中国航发贵阳发动机设计研究所 | Aircraft engine fan rotational speed measuring device |
-
2012
- 2012-09-04 CN CN201210321723.2A patent/CN103675353A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248997A (en) * | 2016-08-22 | 2016-12-21 | 沈阳华创风能有限公司 | A kind of speed probe test equipment |
| CN113533773A (en) * | 2021-08-17 | 2021-10-22 | 中国航发贵阳发动机设计研究所 | Aircraft engine fan rotational speed measuring device |
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Application publication date: 20140326 |