Pulse type LC oscillation induction type angle sensor and angle position measuring method

Abstract

The invention relates to a pulse type LC oscillation induction type angle sensor and an angle position measuring method. The pulse type LC oscillation induction type angle sensor comprises a rotatingshaft capable of rotating around the center, a disc fixed on the rotating shaft and a plurality of inductance coils arranged above the disc, wherein the disc comprises a metallized half disc. The pulse type LC oscillation induction type angle sensor is characterized in that the plurality of inductance coils are uniformly distributed by taking a coil rotation center shaft as the center, the coil rotation center shaft and the rotating shaft are concentric and coaxial, one ends of the plurality of inductance coils are connected together and then are connected to the grounding end of a measuring circuit; the other ends are connected to switches arranged at different pulse generator ports of the measuring circuit respectively, when trigger pulses are turned on and different switches are turnedoff respectively, a pulse generator is turned off after N pulses pass through, and then the position and the rotating direction of the metallized half disc can be derived by reading the voltage on a second capacitor C2. The liquid flowing direction and the number of rotating turns are detected through angle judgment, and the purpose of positive and negative rotation metering is achieved.

Description

technical field [0001] The invention relates to an angle sensor, and in particular discloses a pulse-type LC oscillation induction angle sensor and an angle position measurement method. The pulse-type LC oscillation induction is used to realize the angle sensor for the purpose of testing the flow direction and measurement of flowing liquid. Background technique [0002] In the prior art, the LC oscillation circuit realizes the angle measurement sensor, and there are two schemes: [0003] 1. It is necessary to use the excitation coil and the receiving coil. The excitation coil initiates oscillation, the receiving coil receives the oscillation, and the voltage value of the receiving coil is read to judge the position of the induction metal rotor. This scheme is affected by the area due to the existence of the excitation coil and the receiving coil at the same time. , the number of turns of the uniformly distributed coil will decrease, and the inductance value will decrease acc...

AI Technical Summary

Problems solved by technology

The reading of the voltage value of the oscillation wave in this scheme is affected by the oscillation frequency, phase and amplitude, and the voltage change value of whether there is a metal rotor under the coil is about 10mV, and the distance between the metal rotor and the coil becomes smaller as the distance between the metal rotor and the coil becomes smaller, resulting in reading The difficulty and error are very large, resulting in the wrong judgment of the position of the metal rotor

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