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实验计算了用YZ,YX LiNbO_3和(001)(110)Bi_12GeO_20基片的声面波(SAW)电压传感器对电压的响应.用差分技术改进对外加电压极性变化的响应对称性,获得满意的试验结果.于是电压传感器的应用扩展到低频交流电压的测量,并在20—50℃范围内测试了温度灵敏度.最后,在以探针的与温度有关的零偏置频率为误差信号的基础上,为交流和直流应用提出温度补偿技术.
The response of the SAW voltage sensor to YZ, YX LiNbO_3 and (001) (110) Bi_12GeO_20 substrates was experimentally calculated, and the response to the change of the applied voltage polarity was improved by using the differential technique. Test results The voltage sensor application was then extended to the measurement of low frequency AC voltage and the temperature sensitivity was tested in the range of 20-50 ° C. Finally, based on the temperature-dependent zero offset frequency of the probe as the error signal , For temperature compensation technology for AC and DC applications.