Wireless measuring system and measuring method for multi-node resonant surface acoustic wave sensor
A surface acoustic wave and wireless measurement technology, which is applied in the field of wireless sensing, can solve the problems of measurement result error, longer polling time, and lower signal-to-noise ratio, so as to achieve accurate value of the object to be measured, improve real-time measurement, reduce Effect of Small Measurement Errors
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[0038] The technical scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings:
[0039] Please refer to image 3 As shown, the wireless measurement system of the multi-node resonant surface acoustic wave sensor of the present invention is composed of a reader and several resonant surface acoustic wave sensor nodes; among them: several resonant surface acoustic wave sensor nodes are divided into two types, one One is a common node, that is, the node has only one resonant surface acoustic wave sensor, and the other is a differential node, that is, the node includes two resonant surface acoustic wave sensors; each resonant surface acoustic wave sensor has adjacent But the frequency bands that do not overlap each other; corresponding to the frequency band of each resonant surface acoustic wave sensor, the reader simultaneously emits excitation signals at multiple frequency points to measure the resonant frequencies of all ...
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