Eddy current sensor
The utility model provides an eddy current sensor, which is used for solving the crosstalk problem when a plurality of sensors work simultaneously and improving the accuracy of the eddy current sensor. The eddy current sensor comprises a signal generation circuit and a detection circuit. The signal...
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| creator | ZHAO JIANHU DU KAIYU MENG DESHI YIN DERUI |
| description | The utility model provides an eddy current sensor, which is used for solving the crosstalk problem when a plurality of sensors work simultaneously and improving the accuracy of the eddy current sensor. The eddy current sensor comprises a signal generation circuit and a detection circuit. The signal generation circuit comprises a microcontroller, a voltage-controlled band-pass filter and a power amplifier; wherein the voltage-controlled band-pass filter comprises a band-pass filter and a voltage-controlled gain amplifier which forms a feedback loop between an output port and an input port of the band-pass filter; the input end and the output end of the band-pass filter are connected to the input end of the microcontroller and the input end of the voltage-controlled gain amplifier respectively. The output end of the voltage-controlled gain amplifier is connected to the input end of the band-pass filter after passing through an operational amplifier; and the input end and the output end of the power amplifier ar |
| format | Patent |
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The eddy current sensor comprises a signal generation circuit and a detection circuit. The signal generation circuit comprises a microcontroller, a voltage-controlled band-pass filter and a power amplifier; wherein the voltage-controlled band-pass filter comprises a band-pass filter and a voltage-controlled gain amplifier which forms a feedback loop between an output port and an input port of the band-pass filter; the input end and the output end of the band-pass filter are connected to the input end of the microcontroller and the input end of the voltage-controlled gain amplifier respectively. 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The eddy current sensor comprises a signal generation circuit and a detection circuit. The signal generation circuit comprises a microcontroller, a voltage-controlled band-pass filter and a power amplifier; wherein the voltage-controlled band-pass filter comprises a band-pass filter and a voltage-controlled gain amplifier which forms a feedback loop between an output port and an input port of the band-pass filter; the input end and the output end of the band-pass filter are connected to the input end of the microcontroller and the input end of the voltage-controlled gain amplifier respectively. The output end of the voltage-controlled gain amplifier is connected to the input end of the band-pass filter after passing through an operational amplifier; and the input end and the output end of the power amplifier ar</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AMPLIFIERS BASIC ELECTRONIC CIRCUITRY CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS RESONATORS TESTING |
| title | Eddy current sensor |
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