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The flame temperature is the most important one of the thermodynamic parameters of the combustion process . Today, China has strongly advocated energy conservation . Automobile industry advocate to reduce automobile emissions , and encourage the development and design of low-pollution and efficient new car engines ; coal industry , and advocate to improve the power station coal-fired boilers of pulverized coal combustion stability , cleanliness and economy . The flame temperature is not only related to the combustion efficiency and combustion stability , but also related to the formation and emission of pollutants . The flame temperature measurement technology helps to improve combustion efficiency , improved combustion performance , thereby reducing pollution . In addition , the design of a variety of strategic and tactical weapons launch platform , engine gas flow flame temperature directly affects the design specifications and the way to achieve the target . Therefore, an accurate measurement of the flame temperature , both for cars, coal and electricity industries , strategic and tactical weapons firing platform has important significance . As an important method of flame temperature measurement , non-contact infrared temperature measurement can make full use of the flame radiation characteristics , temperature range , accuracy , adaptability , selectivity and physical quantities integrated measurement unparalleled advantage. In this paper, on the basis of the existing infrared thermometry method to increase the temperature range to improve measurement accuracy and adaptability as the main purpose , designed to be applied to a complex environment , highly accurate and stable measurement system . Flame temperature measurement system hardware design, the infrared spectrum of the flame first measurement to determine the double wavelength selection , based as a choice to select the infrared optical detectors ; then received on the detector signal conditioning , primarily related to the signal amplification, filtering , and shaping ; finally choose the data acquisition card , the signal input into the computer until the follow-up treatment . Flame temperature measurement system software design , the use of LabVIEW software , designed five systems include dual-channel data acquisition function module , dual- wavelength temperature measurement function module , data retention module , data playback function module and instrument calibration function module module , dual-wavelength thermometry . Take advantage of the system to the actual measurement of the candle flame , error analysis and propose improvement methods for measuring the value of the reference standard value .
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