Devedlopment Of Explosion Flame Temperature Measurement Device

Temperature is one of the most important parameters to identify the substances state. Its measurement and control play an important role in national defense, military, scientific experiments, industrial and agricultural production. High temperature measurement occupies a very important position in aerospace, materials, energy, metallurgy and other fields specially. To the process of missile instantaneous explosion, the temperature is one of important physical quantities marking the missile performance, which is also a symbol of nation's military strength, so developing explosion flame temperature measurement device has a very important practical significance.This paper's main work is to develop the explosion flame temperature measurement device with multi-spectral thermometry. Multi-spectral thermometry is to get the brightness information of several spectrums from different channels. Then the temperature and spectral emissivity of material is calculated through processing the information data. Multi-spectral thermometry has advantages such as not affecting the target temperature, fast response and no maximum temperature, so this method is now widely used in the high-temperature rapid measurement system.The paper mainly consists of two parts: the design of the measurement device and calibration of the measurement device. Through the analysis of the domestic and international rapid flame temperature measurement methods and according to practical demands of the explosion flame temperature measurement, the paper gives the hardware and software specific design of the measurement device, which mainly include the detector choice, the measurement wavelength choice, optical system design, the amplifier circuit design, high-speed data acquisition system design, data transmission design, the calculation of the true temperature of the flame, the design of prevention of the destroy and the choice of the method of measurement device calibration. Meanwhile, using Labview programming simplifies the process of programming and shortens the development cycle.