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通常气压传感器的标定补偿方法复杂耗时,开发了一种新的方法去简化气压传感器的标定补偿。首先,设计恒温结构,并通过PID算法自动调节,使气压传感器的核心敏感元件工作于某一个固定温度(此温度稍高于气压传感器需要工作的最高温度点);其次,把气压传感器在与这个固定温度点相等的环境温度下进行标定;最后,完成标定后不管环境温度如何变化,气压传感器敏感元件始终工作在一个恒定的温度,因此气压传感器的标定与补偿可以得到简化。经测试,气压传感器在一定的环境温度范围内实现恒温工作,标定后可以以较高的精度测量气压,实验结果表明经过标定补偿后的气压传感器可以在实际中应用。
Usually the pressure sensor calibration calibration method is complex and time-consuming, has developed a new method to simplify the pressure sensor calibration compensation. First of all, the thermostat structure is designed and automatically adjusted by the PID algorithm to make the core sensor of the pressure sensor work at a certain fixed temperature (this temperature is slightly higher than the maximum temperature point that the pressure sensor needs to work); Secondly, Fixed temperature at the same ambient temperature calibration; Finally, after the calibration is completed regardless of the ambient temperature changes, pressure sensor sensor always works at a constant temperature, so the pressure sensor calibration and compensation can be simplified. After testing, barometric pressure sensor in a certain range of ambient temperature to achieve constant temperature, calibration can be measured with high precision air pressure, the experimental results show that after calibration of the pressure sensor can be used in practice.