JPWO2021145428A5

JPWO2021145428A5 -

Info

Publication number: JPWO2021145428A5
Application number: JP2021571261A
Authority: JP
Filing date: 2021-01-15
Publication date: 2024-01-23

Claims

A first oscillation circuit unit including a first impedance and a second impedance of a different type from the first impedance, one of the first impedance and the second impedance having a sensor function.
A sensor output device comprising: a first specifying section that analyzes an output waveform of the first oscillation circuit section to specify characteristics of a sensor target;
The first oscillation circuit section includes a 1-1 impedance of the same type as the first impedance or a 2-1 impedance of the same type as the second impedance,
The 1-1 impedance has a smaller external environment change sensitivity than the first impedance having the sensor function,
The 2-1 impedance has a smaller external environment change sensitivity than the second impedance having the sensor function,
A first switching unit that switches between the first and 1-1 impedances or a second switching unit that switches between the second and 2-1 impedances,
switching between a measurement mode in which the first impedance and the second impedance are selected and a reference mode in which the 1-1 impedance and the 2-1 impedance are selected;
Output device for sensor.

The output device for a sensor according to claim 1, wherein the specifying section analyzes the output waveform of the oscillation circuit section using a clock of 1 MHz or more.

The output device for a sensor according to claim 1 or 2, wherein the first impedance is a resistance and the second impedance is a capacitor.

4. The sensor output device according to claim 1, wherein a comparator, an operational amplifier, or a zero-drift amplifier with suppressed zero drift is used in the first oscillation circuit section.

The sensor output device according to any one of claims 1 to 4, further comprising a timing control unit that suspends operation of the oscillation circuit unit.

The output device for a sensor according to claim 1 , further comprising an output correction section that analyzes the output in the reference mode and corrects the output in the measurement mode.

7. The sensor output device according to claim 1 , further comprising a waveform adjustment section that changes the pattern of the output waveform in the measurement mode and the output waveform in the reference mode.

8. The output device for a sensor according to claim 1, further comprising a timing generating section that controls the switching section to specify a time-series arrangement of the output of the measurement mode and the output of the reference mode.

9. The sensor output device according to claim 8 , wherein the timing generator outputs the measurement mode output and the reference mode output alternately and continuously.

A first oscillation circuit section comprising a first impedance and a second impedance of a different type from the first impedance, one of the first impedance and the second impedance having a sensor function.
An output device for a sensor, comprising a first identifying section that analyzes an output waveform of the first oscillation circuit section to identify characteristics of a sensor target,
A second oscillation circuit section comprising a 1-1 impedance of the same type as the first impedance and a 2-1 impedance of the same type as the second impedance,
The 1-1 impedance has a smaller external environment change sensitivity than the first impedance having the sensor function,
The 2-1 impedance further includes a second oscillation circuit section having a smaller external environment change sensitivity than the second impedance having the sensor function,
Further comprising a second specifying section that analyzes the output waveform of the second oscillation circuit section in the same way as the first specifying section,
A sensor including an output correction section that corrects the output of the measurement mode based on the output of the reference mode, with the output of the first oscillation circuit section as a measurement mode and the output of the second oscillation circuit section as a reference mode. output device.

The output device for a sensor according to claim 10 , further comprising a timing generator that specifies a time-series arrangement of the output of the measurement mode and the output of the reference mode.

11. The sensor output device according to claim 10, wherein the timing generator outputs the measurement mode output and the reference mode output alternately and continuously.

The output device for a sensor according to claim 1 or 10 , further comprising a timing generation section that controls the switching section to select the measurement mode, the reference mode, and the rest mode.

14. The sensor output device according to claim 1 , wherein the switching section comprises a three-state buffer.

A first oscillation circuit unit including a first impedance and a second impedance of a different type from the first impedance, one of the first impedance and the second impedance having a sensor function.
A sensor output device comprising: a first specifying section that analyzes an output waveform of the first oscillation circuit section to specify characteristics of a sensor target;
A sensor in which the external environment change sensitivity of the first impedance, which is larger in the external environment change sensitivity and the second impedance, is equal to the external environment change sensitivity of the characteristic specified by the first identifying section. In the output device for
A comparator, an operational amplifier, or a zero-drift amplifier with suppressed zero drift is used in the first oscillation circuit section,
The output device for a sensor further includes an output correction section that analyzes the output in the reference mode and corrects the output in the measurement mode.