CN203672908U - Photoelectric non-contact type tachometer calibrator - Google Patents
Photoelectric non-contact type tachometer calibrator Download PDFInfo
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- CN203672908U CN203672908U CN201420056090.1U CN201420056090U CN203672908U CN 203672908 U CN203672908 U CN 203672908U CN 201420056090 U CN201420056090 U CN 201420056090U CN 203672908 U CN203672908 U CN 203672908U
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- contact type
- tachometer gage
- photoelectric non
- type tachometer
- photoelectric
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Abstract
The utility model discloses a photoelectric non-contact type tachometer calibrator, which comprises a circuit cavity, a first bolt, a second bolt and a light-emitting diode, wherein the circuit cavity is provided with an electro-optical conversion circuit; the first bolt and the second bolt respectively extend along one side of the circuit cavity, are served as two pins of the electro-optical conversion circuit, and are respectively connected with signal output terminals of a photoelectric non-contact type tachometer to be calibrated; and the light-emitting diode is arranged on the other side of the circuit cavity, and is connected in series with a resistor in the electro-optical conversion circuit. The photoelectric non-contact type tachometer calibrator is simple and reasonable in structure, adopts a standard electrical signal source with high precision and high stability as the standard rotation speed value, and simulates a standard rotation signal to be measured by the calibrated tachometer through directly converting an electrical signal into an optical pulse signal, thereby achieving the purpose of calibrating the photoelectric non-contact type tachometer, and being high in calibration precision and efficiency.
Description
Technical field
The utility model relates to tachometer gage calibrating field, particularly a kind of photoelectric non-contact type tachometer gage calibrating instrument.
Background technology
Tachometer gage is the instrument of measuring for object velocity of rotation, there are contact and contactless two large classes, the contactless electromagnetic type of classifying again, photo-electric, optical frequency are flash etc., photo-electric mainly contains entire spectrum light and two kinds of light sources of laser, and it is basically identical as the element (sensor) of photoinduction, can make a response to entire spectrum light, and be converted to electric impulse signal.Gauge internal is to electric impulse signal count measurement, by distinctive setting, can demonstrate the speed that object rotates, and unit is for turning per minute (rpm). for guarantee tachometric survey accurately, before Instrument use, all to examine and determine/calibrate, can use after qualified.
The calibrating of photoelectric non-contact type digital revmeter adopts a rotating speed generating means to rotate, velocity of rotation is adjustable, reflective pad pasting or paper are sticked on rotation axis, tachometer gage is placed in to duty, the light vertical irradiation that tachometer gage sends is on rotation axis, the reflective pad pasting or the paper that rotate with rotation axis reflect light, and tachometer gage photo-sensitive cell produces electric signal after receiving reflected light.And the frequency of electric signal is measured to the rotating speed measured value of rotation axis, the actual speed value of this measured value and rotation axis (actual speed value measures than the higher tachometer gage of accredited tachometer gage precision by one) is relatively obtained to the error criterion of tachometer gage, thereby judge that whether tachometer gage is qualified.
Prior art needs a mechanical hook-up to produce adjustable actual speed, need a high-precision tachometer gage to do standard, operation relative complex, it is limited that whole process mechanism device produces stability and the precision of adjustable actual speed, causes photoelectric non-contact type tachometer gage calibration accuracy and efficiency all not high.
Utility model content
The utility model is in order to overcome defect in above-mentioned prior art, provides a kind of simple and reasonable, easy to use, all high photoelectric non-contact type tachometer gage calibrating instruments of calibration accuracy and efficiency.
For achieving the above object, provide a kind of photoelectric non-contact type tachometer gage calibrating instrument according to the utility model, comprising: circuit cavity, it has electro-optical conversion circuit; The first latch and the second latch, stretch out along a side of circuit cavity respectively, as two pins of electro-optical conversion circuit, respectively with the signal output part sub-connection of photoelectric non-contact type tachometer gage to be examined and determine; Light emitting diode, is positioned at the opposite side of circuit cavity, is associated in electro-optical conversion circuit with resistor string.
In technique scheme, circuit cavity is rectangular structure, and upper and lower two sides are arc surface, and left and right sides are Long Circle.
In technique scheme, the cross section of the first latch and the second latch is circle, stretches out respectively along the lateral vertical of circuit cavity.
In technique scheme, light emitting diode is white light emitting diode.
In technique scheme, the resistance of resistor is 500 Ω.
Compared with prior art, the utlity model has following beneficial effect: this photoelectric non-contact type tachometer gage calibrating instrument is simple and reasonable, utilize the standard electric signal source of high precision and high stability as rated rotational frequency value, by electric signal is converted into light pulse signal, the turn signal that simulates a standard is measured for accredited tachometer gage, thereby the object that reaches calibrating photoelectric non-contact type tachometer gage, calibration accuracy and efficiency are all high.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of photoelectric non-contact type tachometer gage calibrating instrument of the present utility model;
Fig. 2 is the left side TV structure schematic diagram of photoelectric non-contact type tachometer gage calibrating instrument of the present utility model;
Fig. 3 is the right side TV structure schematic diagram of photoelectric non-contact type tachometer gage calibrating instrument of the present utility model;
Fig. 4 is the plan structure schematic diagram of photoelectric non-contact type tachometer gage calibrating instrument of the present utility model;
Fig. 5 is the electro-optical conversion circuit figure of photoelectric non-contact type tachometer gage calibrating instrument of the present utility model;
Description of reference numerals:
1-circuit cavity, 2-the first latch, 3-the second latch, 4-white light emitting diode, 5-resistor.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of embodiment.It will be appreciated that, mentioned in following embodiment of the present utility model " on ", D score, " left side ", " right side ", " front " and " reverse side " be all take the direction shown in each figure as benchmark, these words that are used for limiting direction are only used to be convenient to explanation, do not represent the restriction to the concrete technical scheme of the utility model.
Photoelectric non-contact type tachometer gage calibrating instrument of the present utility model is simple and reasonable, utilize the standard electric signal source of high precision and high stability as rated rotational frequency value, by electric signal is converted into light pulse signal, the turn signal that simulates a standard is measured for accredited tachometer gage, thereby the object that reaches calibrating photoelectric non-contact type tachometer gage, calibration accuracy and efficiency are all high.
Detailed description by way of example but unrestriced mode has illustrated the disclosure, should be understood that the realization that can be combined by independent realization or with other aspects in various aspect of the present disclosure below.This instructions clearly enables those skilled in the art to manufacture and uses us to believe for new and non-obvious improvement, describe some embodiment, alternative, modification, alternatives and system applies, comprised the current best mode that is considered to carry out the utility model principle of describing in this instructions.In the time describing element or feature and/or embodiment, be intended to expression titled with " one " " one " " be somebody's turn to do " and " described " and there are one or more in element or feature.Term " comprises " that " comprising " and " having " is intended to is comprising property, and also has extra element or feature beyond being illustrated in those specifically described elements or feature.
As shown in Figures 1 to 4, this photoelectric non-contact type tachometer gage calibrating instrument belongs to a kind of electrical to optical converter of electric light non-contact type tachometric table calibrating, is converted into light pulse signal for the frequency signal various calibration/calibration equipments, measures for accredited tachometer gage.Its concrete structure comprises: circuit cavity 1 and stretch out the first latch 2 of circuit cavity 1 from a side, the second latch 3 and the white light emitting diode (LED) 4 that is positioned at circuit cavity 1 opposite side, circuit cavity 1 has electro-optical conversion circuit, as shown in Figure 5, two pins of this electro-optical conversion circuit take the first latch 2 and the second latch 3 as circuit both ends, white light emitting diode 4 and resistor 5 are connected in this electro-optical conversion circuit, when detection this electro-optical conversion circuit by the first latch 2 and the second latch 3 respectively with the signal output part sub-connection of photoelectric non-contact type tachometer gage to be examined and determine, make the ac signal of tachometer gage output act on two pins of this photoelectric non-contact type tachometer gage calibrating instrument, the white light emitting diode 4 that is connected to pin each signal period all can conducting once and send visible light pulses, now the optical pulse frequency of calibrating instrument equals the frequency of electric signal, the frequency that this electric signal frequency is also equivalent to object rotation is tach signal, photoelectric non-contact type tachometer gage to be examined and determine often detects a light pulse, be equivalent to detect that object rotates one week.Due to electric signal frequency by equipment through tracing to the source and qualified quartz clock source determines, precision high stability is good, can use as the measured value of rated rotational frequency table, different tachometer values can be easily by artificial or program control setting, thereby the object that reaches calibrating photoelectric non-contact type tachometer gage, calibration accuracy and efficiency are all high.
As shown in Figures 1 to 4, circuit cavity 1 is rectangular structure, and upper and lower two sides are arc surface, and left and right sides are Long Circle.The first latch 2 and the second latch 3 cross sections are circular, vertically stretch out respectively the first latch 2 and signal output terminal corresponding be connected of the second latch 3 with photoelectric non-contact type tachometer gage to be examined and determine when detection along circuit cavity 1 left surface.The spacing of the first latch 2 and the second latch 3 is consistent with existing electronic equipment lead-out terminal normal pitch, can be applicable to the signal source equipment of different manufacturers.
White light emitting diode 4 is positioned at the right upper portion of circuit cavity 1, when detection, white light emitting diode 4 is aimed at the light-receiving window of photoelectric non-contact type tachometer gage to be examined and determine, optical pulse irradiation produces electric signal and completes the measurement to rated rotational frequency to optical receiving sensor, and the setpoint frequency of this measured value and equipment relatively can obtain the error of tested tachometer gage.The resistance of resistor 5 is 500 Ω.
Testing process is as follows, first the first latch 2 of this photoelectric non-contact type tachometer gage calibrating instrument and the second latch 3 are inserted in to the signal output terminal of photoelectric non-contact type tachometer gage to be examined and determine, the amplitude of the ac signal of photoelectric non-contact type tachometer gage output to be examined and determine is between 5V to 10V, electric current fan-out capability is greater than 5mA, it acts on two pins (the first latch 2 and the second latch 3) of the electro-optical conversion circuit of this photoelectric non-contact type tachometer gage calibrating instrument, white light emitting diode (LED) 4 all can conducting once send visible light pulses in each signal period, the optical pulse frequency of this photoelectric non-contact type tachometer gage calibrating instrument equals the frequency of electric signal.The frequency that this electric signal frequency is also equivalent to object rotation is tach signal.Photoelectric non-contact type tachometer gage to be examined and determine often detects a light pulse, is equivalent to detect that object rotates one week.Because electric signal frequency is by determining through quartz clock that trace to the source and qualified source in equipment, precision high stability is good, can use as the measured value of rated rotational frequency table, and different tachometer values can be easily by artificial or program control setting, and calibrating is efficiently conveniently completed.
To sum up, this photoelectric non-contact type tachometer gage calibrating instrument is simple and reasonable, utilize the standard electric signal source of high precision and high stability as rated rotational frequency value, by electric signal is converted into light pulse signal, the turn signal that simulates a standard is measured for accredited tachometer gage, thereby the object that reaches calibrating photoelectric non-contact type tachometer gage, calibration accuracy and efficiency are all high.
Finally it should be noted that: above embodiment is only in order to illustrate the utility model and the described technical scheme of unrestricted the utility model; Therefore, although this instructions has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can modify or be equal to replacement the utility model; And all do not depart from technical scheme and the improvement thereof of spirit and scope of the present utility model, it all should be encompassed in claim scope of the present utility model.
Claims (5)
1. a photoelectric non-contact type tachometer gage calibrating instrument, is characterized in that, comprising:
Circuit cavity, it has electro-optical conversion circuit;
The first latch and the second latch, stretch out along a side of described circuit cavity respectively, as two pins of described electro-optical conversion circuit, respectively with the signal output part sub-connection of photoelectric non-contact type tachometer gage to be examined and determine;
Light emitting diode, is positioned at the opposite side of described circuit cavity, is associated in described electro-optical conversion circuit with resistor string.
2. photoelectric non-contact type tachometer gage calibrating instrument according to claim 1, is characterized in that: described circuit cavity is rectangular structure, and upper and lower two sides are arc surface, and left and right sides are Long Circle.
3. photoelectric non-contact type tachometer gage calibrating instrument according to claim 1, is characterized in that: the cross section of described the first latch and the second latch is circle, stretches out respectively along the lateral vertical of described circuit cavity.
4. according to the photoelectric non-contact type tachometer gage calibrating instrument described in any one in claims 1 to 3, it is characterized in that: described light emitting diode is white light emitting diode.
5. photoelectric non-contact type tachometer gage calibrating instrument according to claim 4, is characterized in that: the resistance of described resistor is 500 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056090.1U CN203672908U (en) | 2014-01-29 | 2014-01-29 | Photoelectric non-contact type tachometer calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056090.1U CN203672908U (en) | 2014-01-29 | 2014-01-29 | Photoelectric non-contact type tachometer calibrator |
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| Publication Number | Publication Date |
|---|---|
| CN203672908U true CN203672908U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420056090.1U Expired - Fee Related CN203672908U (en) | 2014-01-29 | 2014-01-29 | Photoelectric non-contact type tachometer calibrator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445497A (en) * | 2015-11-16 | 2016-03-30 | 陕西航空电气有限责任公司 | Method for calibrating photoelectric tachometer |
| CN110297102A (en) * | 2019-08-01 | 2019-10-01 | 重庆杰恒蠕动泵有限公司 | Pump head rotating speed measurement method |
| CN112858726A (en) * | 2021-01-21 | 2021-05-28 | 中国计量科学研究院 | High-rotating-speed standard device |
| CN113899918A (en) * | 2021-11-23 | 2022-01-07 | 中国人民解放军92493部队计量测试研究所 | Photoelectric tachometer calibration method based on wavelength-adjustable LED pulse light source |
-
2014
- 2014-01-29 CN CN201420056090.1U patent/CN203672908U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445497A (en) * | 2015-11-16 | 2016-03-30 | 陕西航空电气有限责任公司 | Method for calibrating photoelectric tachometer |
| CN110297102A (en) * | 2019-08-01 | 2019-10-01 | 重庆杰恒蠕动泵有限公司 | Pump head rotating speed measurement method |
| CN112858726A (en) * | 2021-01-21 | 2021-05-28 | 中国计量科学研究院 | High-rotating-speed standard device |
| CN113899918A (en) * | 2021-11-23 | 2022-01-07 | 中国人民解放军92493部队计量测试研究所 | Photoelectric tachometer calibration method based on wavelength-adjustable LED pulse light source |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20190129 |