CN202928688U - Binary-channel visible light intensity meter calibration experimental apparatus - Google Patents
Binary-channel visible light intensity meter calibration experimental apparatus Download PDFInfo
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- CN202928688U CN202928688U CN 201220622466 CN201220622466U CN202928688U CN 202928688 U CN202928688 U CN 202928688U CN 201220622466 CN201220622466 CN 201220622466 CN 201220622466 U CN201220622466 U CN 201220622466U CN 202928688 U CN202928688 U CN 202928688U
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- intensity meter
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Abstract
The utility model discloses a binary-channel visible light intensity meter calibration experimental apparatus, comprising a light source device, a light path adjusting device, and a measurement device. The light source device comprises a light source and a light source adjusting device. The light path adjusting device comprises a beam splitter mirror and a completely reflecting mirror. The measurement device comprises a measurement and control device, a calibration light intensity meter, and a light intensity meter to be calibrated. The light source adjusting device is connected with the light source. Emergent light rays emitted by the light source is divided into two equal-intensity light beams through the beam splitter mirror, wherein one beam enters into the calibration light intensity meter while the other beam enters into the light intensity meter to be calibrated through the completely reflecting mirror. The calibration light intensity meter and the light intensity meter to be calibrated are both connected to the measurement and control device, and the light intensity meter to be calibrated receives instruction feedbacks from the measurement and control device. The apparatus is simple in structure and convenient for measurement. The emergent light rays emitted by utilizing the same light source are divided into the two synchronous light beams, and simultaneously the calibration light intensity meter and the light intensity meter to be calibrated are detected in a synchronous manner, thereby realizing the objective of calibration, and reducing the calibration difficulty while increasing the calibration precision at the same time.
Description
Technical field
The utility model relates to a kind of light intensity meter standardization experimental apparatus, particularly binary channels visible light light intensity meter standardization experimental apparatus.
Background technology
Light intensity value is the most frequently used measurement parameter that arrives in the Photoelectric Detection process.Converting light signal to electric signal by photodetector and further process, is to carry out the common method that light intensity value is measured.In the education experiment of Photoelectric Detection, the student will measure light intensity by light intensity meter often, and the calibration before light intensity meter uses often is left in the basket, and does not also go to do concern for the accuracy of measured value more; In the layout of experiment content almost not to the performance test of checkout equipment own.The relevant design problem of luminous intensity measurement is also arranged in the graduation project of photoelectricity Major often, also main the concern and the completing of measurement function mostly in complete process, less for the concern of accuracy.On light intensity meter was demarcated, manufacturer's many Application standards Source calibration was subject to the condition restriction such as instrument, environment in the students practise process, and often can not guarantee provides standard sources to test, thus the precision that can affect experiment and measure.
The utility model content
For addressing the above problem, the disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus, simple in structure, two bundles that employing is told by the diverging light of same light source are measured light beam, reduced the requirement of light intensity meter demarcation to light source, effectively avoid simultaneously the fluctuation of light source on the impact of light intensity meter demarcation, also reduced the difficulty of demarcating when having improved the light intensity meter stated accuracy.
the disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus, comprise light supply apparatus, light path regulating device and measurement mechanism, described light supply apparatus comprises light source and light source adjustment device, described light path regulating device comprises beam splitter and completely reflecting mirror, described measurement mechanism comprises to be measured and control device, verification light intensity meter and light intensity meter to be checked, described light source adjustment device is connected with light source, the emergent ray that described light source sends is divided into two bundle isocandela light beams through beam splitter, a branch of verification light intensity meter that enters wherein, reflection enters light intensity meter to be checked to another bundle through completely reflecting mirror, described verification light intensity meter and light intensity meter to be checked all are connected to the instruction feedback that measurement and control device are accepted in measurement and control device and light intensity meter to be checked.The disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus simple in structure, easy to use, by utilizing the two bundle equal strength of being told by same light source synchronously to detect light beam, not only reduce light intensity meter and demarcated the requirement that detects light source, also reduced the impact of light fluctuation on the light intensity meter stated accuracy, effectively reduced experiment or detected the equipment requirement that light intensity meter is demarcated when light intensity meter detects stated accuracy improving, thus precision experiment or detect the cost of demarcating.
A kind of improvement of the disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus, described beam splitter and completely reflecting mirror be arranged in parallel.Beam splitter and the completely reflecting mirror of this improvement by be arrangeding in parallel, realized detecting the Simultaneous Determination of light path, reduced the impact of light source fluctuation on detection effect and accuracy of detection in the light beam transmittance process, thereby reduced the light source requirements of light intensity meter demarcation to experiment or detection, thereby reduced requirement and cost that light intensity meter is demarcated.
The disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus.Simple in structure, easy to use, the strong detection light source such as grade of not only telling by homology has realized the synchronous detection of verification light intensity meter and light intensity meter to be checked, has also improved simultaneously the precision that detects and test, and has improved the stated accuracy of light intensity meter and has demarcated efficient.
Description of drawings
The syndeton schematic diagram of Fig. 1, the disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus;
The fundamental diagram of Fig. 2, the disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand following embodiment and only be used for explanation the utility model and be not used in restriction scope of the present utility model.Need to prove, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, word " interior " and " outward " refer to respectively towards or away from the direction of particular elements geometric center.
as depicted in figs. 1 and 2, the disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus, comprise light supply apparatus, light path regulating device and measurement mechanism, described light supply apparatus comprises light source and light source adjustment device, described light path regulating device comprises beam splitter and completely reflecting mirror, described measurement mechanism comprises to be measured and control device, verification light intensity meter and light intensity meter to be checked, described light source adjustment device is connected with light source, the emergent ray that described light source sends is divided into two bundle isocandela light beams through beam splitter, a branch of verification light intensity meter that enters wherein, reflection enters light intensity meter to be checked to another bundle through completely reflecting mirror, described verification light intensity meter and light intensity meter to be checked all are connected to the instruction feedback that measurement and control device are accepted in measurement and control device and light intensity meter to be checked.The disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus simple in structure, easy to use, by utilizing the two bundle equal strength of being told by same light source synchronously to detect light beam, not only reduce light intensity meter and demarcated the requirement that detects light source, also reduced the impact of light fluctuation on the light intensity meter stated accuracy, effectively reduced experiment or detected the equipment requirement that light intensity meter is demarcated when light intensity meter detects stated accuracy improving, thus precision experiment or detect the cost of demarcating.
As a kind of preferred, described beam splitter and completely reflecting mirror be arranged in parallel.Beam splitter and the completely reflecting mirror of this improvement by be arrangeding in parallel, realized detecting the Simultaneous Determination of light path, reduced the impact of light source fluctuation on detection effect and accuracy of detection in the light beam transmittance process, thereby reduced the light source requirements of light intensity meter demarcation to experiment or detection, thereby reduced requirement and cost that light intensity meter is demarcated.
Specific embodiment
The disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus comprises light supply apparatus, light path regulating device and measurement mechanism, and as shown in Figure 1, light supply apparatus comprises light source and light source adjustment device.Light path is divided into binary channels by light source adjustment device, and beam splitter and a completely reflecting mirror that light source adjustment device is 1:1 by a splitting ratio consist of.Measurement mechanism comprises measurement and control device, verification light intensity meter and light intensity meter to be checked.
The red laser diode of light source take visible light device wavelength as 650nm is as light source component, and light source adjustment device is regulated the generation pulsating wave makes light source device by the emission of pulse form, thereby realizes that light intensity is adjustable.
Pulsed optical signals enters light path regulating device, incide beam splitter, beam splitter and incident light are in angle of 45 degrees, incident light is divided into two bundles that light intensity equates, transmitted light enters the photoelectricity receive window of verification light intensity meter, reflected light forms one tunnel light beam parallel with transmitted light through the one side completely reflecting mirror parallel with beam splitter, incides the photoelectricity receive window of light intensity meter to be checked.
The two aplanatic light signals of bundle carry out opto-electronic conversion on passage separately.When light source had fluctuation, because this two-beam derives from same light beam, the fluctuation situation of this two-beam is identical, and was identical at the light intensity signal that the photoelectricity receive window receives, also should be identical at the measured electric signal of synchronization, light intensity value.For this reason, the fluctuation of light source does not impact this caliberating device, light source choose the restriction that no longer is subjected to standard sources.The measuring-signal of verification light intensity meter one tunnel is as the standard value of calibration.
Circuit part structure such as Fig. 2, verification light intensity meter comprise general serial line interface transmission light intensity value, and this light intensity value reads by data-reading unit.Light intensity meter to be checked inside has photoelectric conversion module that light signal is converted to electric signal, measure to measure this electric signal with control device and can obtain light intensity value, and this electric signal is easy to measure, and records by voltage measurement unit.Synchronizing signal acts on that numerical value reads and voltage measurement unit, makes light intensity value and the electric signal of synchronization isocandela two-beam be obtained simultaneously.Change the intensity of light source in test, make the intensity of light source by by force to a little less than gradually change, the output of synchronizing signal of every variation once obtains one group of light intensity value and magnitude of voltage.Many group light intensity values and magnitude of voltage enter the data scaling unit successively.Light intensity value I and magnitude of voltage U answer linear I=aU+b, and a, b are fitting coefficient.Because light intensity meter to be checked can not reach the standard of verification light intensity meter on circuit design, must exist non-linear in measuring process, the non-linear two ends of measuring range that are mainly reflected in of light intensity meter to be checked, in the data scaling unit, many groups light intensity-magnitude of voltage of obtaining is done staging treating, low intensity values zone I=lU
L+ b
L, high light intensity value zone I=Hu
H+ b
H, all the other regional light intensity value I=aU+b.The data scaling function of light intensity value-voltage match is joined in the operation part of light intensity meter to be checked, by the download online circuit with program Solidification in the internal program memory of light intensity meter to be checked.
When light intensity meter to be checked independently uses, press the big or small U of magnitude of voltage
L, U, U
HAnd light intensity-voltage fitting function is three sections processing.Can obtain more accurately light intensity value.
The disclosed binary channels visible light of the utility model light intensity meter standardization experimental apparatus.Simple in structure, easy to use, the strong detection light source such as grade of not only telling by homology has realized the synchronous detection of verification light intensity meter and light intensity meter to be checked, has also improved simultaneously the precision that detects and test, and has improved the stated accuracy of light intensity meter and has demarcated efficient.Realized utilizing dual channel approaches to the demarcation of light intensity meter to be checked, light intensity has been demarcated no longer be confined to standard sources.Improved the measuring accuracy of instrument.Strengthened student's understanding to instrument performance in the Photoelectric Detection process, and to the understanding of instrumental calibration process
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme that is comprised of above technical characterictic combination in any.The above is embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (2)
1. binary channels visible light light intensity meter standardization experimental apparatus, it is characterized in that: comprise light supply apparatus, light path regulating device and measurement mechanism, described light supply apparatus comprises light source and light source adjustment device, described light path regulating device comprises beam splitter and completely reflecting mirror, described measurement mechanism comprises to be measured and control device, verification light intensity meter and light intensity meter to be checked, described light source adjustment device is connected with light source, the emergent ray that described light source sends is divided into two bundle isocandela light beams through beam splitter, a branch of verification light intensity meter that enters wherein, reflection enters light intensity meter to be checked to another bundle through completely reflecting mirror, described verification light intensity meter and light intensity meter to be checked all are connected to the instruction feedback that measurement and control device are accepted in measurement and control device and light intensity meter to be checked.
2. binary channels visible light light intensity meter standardization experimental apparatus according to claim 1, it is characterized in that: described beam splitter and completely reflecting mirror be arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622466 CN202928688U (en) | 2012-11-22 | 2012-11-22 | Binary-channel visible light intensity meter calibration experimental apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622466 CN202928688U (en) | 2012-11-22 | 2012-11-22 | Binary-channel visible light intensity meter calibration experimental apparatus |
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| CN202928688U true CN202928688U (en) | 2013-05-08 |
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| CN 201220622466 Expired - Fee Related CN202928688U (en) | 2012-11-22 | 2012-11-22 | Binary-channel visible light intensity meter calibration experimental apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957426A (en) * | 2018-07-17 | 2018-12-07 | 中科院合肥技术创新工程院 | A kind of laser radar photoelectric detecting system detection performance test method and device |
-
2012
- 2012-11-22 CN CN 201220622466 patent/CN202928688U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957426A (en) * | 2018-07-17 | 2018-12-07 | 中科院合肥技术创新工程院 | A kind of laser radar photoelectric detecting system detection performance test method and device |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20141122 |
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| EXPY | Termination of patent right or utility model |