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粮食温度数字转换电路类型多,方法不一.其中,阶梯型温度数字电桥转换电路比较简单.本文从实际温度数字转换电路的基本原理出发,通过分析,提出数字桥路参数的计算方法.采用BOLK线性法对非线性元件热敏电阻进行线性化处理,为在数字电桥测温中采用不同类型热敏电阻提供一种简便的计算手段.在误差估计和分析比较中,指出了采用一致性好的热敏电阻作为测温元件的优点.
There are many types and different methods of grain temperature digital conversion circuit.According to the basic principle of actual temperature digital conversion circuit, the method of calculating the digital bridge parameters is put forward.Finally, BOLK linear method is used to linearize the thermistor of non-linear element, which provides a simple calculation method for different types of thermistors used in temperature measurement of digital bridge.In the error estimation and analysis and comparison, A good thermistor temperature sensor as the advantage.