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热释电摄象管红外电视测量目标温度是一种非接触式测温方法。为减少系统内部测温误差和适合各类红外电视的需要,本文对测温信号的几种转换方法及其准确度进行分析和讨论。红外电视的任务是显示目标的热象和对其温度分布进行测量。目标的红外辐射通过热释电摄象管转变为热电信号(热电信号的处理方法有切割采样、常态采样、象差采样等),继后对测温信号进行模-模(A/A)或模-数(A/D)转换,最后给出模拟或数字显示测量结果。便携式红外电视(CTR型)应用了亮带法测温,即用模拟亮带的长短来表示被测部分的温度值,故称模-模(A/A)转换型。它对热电信号进行切割采样而形成测温信号。亮带发生
Pyroelectric tube infrared TV measurement target temperature is a non-contact temperature measurement method. In order to reduce the error of the internal temperature measurement system and suit the needs of all kinds of infrared television, this paper analyzes and discusses several conversion methods of temperature signal and its accuracy. The mission of the infrared television is to show the thermal image of the target and to measure its temperature distribution. The target’s infrared radiation is converted into thermoelectric signals through the pyroelectric image tube (the thermoelectric signal processing method is cutting sampling, normal sampling, aberration sampling, etc.), then the temperature signal is mode-analog (A / A) or Analog-to-digital (A / D) conversion gives the analog or digital display of the measurement results. Portable Infrared TV (CTR type) application of bright band method temperature, that is, the length of the analog brightness band to indicate the measured part of the temperature, it is called A / A conversion type. It is cutting the thermoelectric signal sampling and temperature measurement signal. Bright band occurred