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Method for improving measurement precision of photometry measuring instrument

A technology of measuring accuracy and measuring instruments, which is applied in the field of measurement, can solve problems such as increased differences in measurement results, decreased measurement accuracy of instruments, and incomplete responses, etc., and achieves the effects of improved measurement accuracy, low cost, and simple and easy methods

Inactive Publication Date: 2007-09-12
郑晓明
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Problems solved by technology

[0014] 5. The influence of environmental temperature and humidity, etc.
Since the semiconductor light-emitting diode has a discontinuous spectrum, and the response of the detector to different colors (bands) of light is not exactly the same, this leads to a decrease in the measurement accuracy of the instrument and an increase in the difference in measurement results between instruments of the same level

Method used

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  • Method for improving measurement precision of photometry measuring instrument
  • Method for improving measurement precision of photometry measuring instrument
  • Method for improving measurement precision of photometry measuring instrument

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Embodiment Construction

[0034] As shown in the figure, the test method provided by the present invention is: the measured light A, after V(λ) calibration (that is, the aforementioned filter calibration), is received by the detector B and converted into a current signal, and converted into a voltage through an IV converter The signal is amplified and then converted into a digital signal (sampling value) by the A / D converter, and then the digital signal is processed (usually processed by a single-chip microcomputer, including: the instrument calibration coefficient calibrated with the standard light source C, that is, the intercept and slope, compared, and calculate the measurement result), and send the processing result to a PC or a monitor for display; the above are conventional measurement steps of existing photometric measuring instruments.

[0035] The modification made by the present invention is: the instrument is calibrated by standard light sources of different spectral ranges in advance to obt...

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Abstract

This invention relates to a method of advancing photometric quantity measuring apparatus accuracy of measurement. Method include; measured light through V ( lambda) regulation then be received by detector to turn to current signal, passing iv transducer turn ro voltage alarm, after magnifying then passing A / D transducer turn to digital signal; processing the digital signal, and send the results to PC machine or scope for presentation;this instrument beforehand has passed difference spectral range standard light source adjust, gain different instrument calibration coefficient; And use homologize wave band's instrument calibration coefficient while use this instrument to measure difference wave band light source. The described standard light source is linear light source that has scaling measured by instrument of higher order of accuracy. The described difference spectral range divided into red green blue yellow white five colors.

Description

technical field [0001] The invention relates to a measurement method, in particular to a method for improving the measurement accuracy of a photometric measuring instrument. Background technique [0002] In light radiation measurement, there are two types of energy-related quantities: one is physical, referred to as radiation; the other is physiological, called photometric (including luminous flux, luminous intensity, illuminance, luminance, etc.). The radiation amount of light includes all radiant energy of ultraviolet radiation, visible light and infrared radiation. Human vision not only excludes invisible ultraviolet radiation and infrared radiation, but also in terms of quantity, the light radiation energy felt by the human eye is not completely equal to the actual energy of the visible part of light radiation (visible light). The basic method of photometric measurement can be divided into two types according to the different receivers used to measure the photometric qu...

Claims

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Application Information

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IPC IPC(8): G01J1/42
Inventor 郑晓明
Owner 郑晓明
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