After that the microprocessor samples and processes it and communicates with the computer , it processes the data and gets the relative position between the light source and psd . the method avoids the low - response in the traditional position detecting by scanning model . the whole system is low power , fast - response , and can be widely used 此方法避免了通常利用固体图像传感器件以扫描成像方式测量位置时，响应速度慢的缺点；系统具有实现简单、功耗低、响应快等特点，它可以应用于许多远距离位置测量和一般工业控制场合。
2 . there are three measuring positions for temperature transducer : inner sand temperature of double disk cooler ; testing sand temperature near feeding hopper can reflect low temperature condition of old sand ; the temperature of double disk cooler top can reflect inner temperature change of double disk ; therefore , it can estimate temperature change according to this change 2温度传感器的测量位置有三处： 1双盘冷却器内部砂温2进料口附近检测砂温，能够反馈旧砂降温情况3双盘冷却器顶部抽风口气温，反映双盘内气温变化情况，由此气温可大致判断双盘内砂温变化情况。
( 4 ) considering the combination of the calculation of measuring placement , the digital signals processing technology , the frequency - changing technology , the single chip computer technology and the measurement data of fieldwork , the measuring brainpower apparatus can largely make use of the man - machine conversation technology and measuring knowledge . by using this apparatus , the errors between the measured results and real grounding resistance can be eliminated largely 通过短距智能测量仪能将测量位置计算、变频技术、单片机技术、数字信号处理技术和现场测量数据有机的结合起来，充分利用人机交互与已有知识的优势，可以简单、准确地得到待测系统的接地电阻值。
