Detection device

Patent metadata

Field	Value
Publication number	US-10006971-B2
Application number	US-201615091784-A
Country	US
Kind code	B2
Filing date	Apr 6, 2016
Priority date	Oct 9, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

Disclosed is a current output-type detection device capable of reducing an amount of power consumption without sacrificing detection accuracy. The detection device includes: a sensor circuit; a sensor signal processing circuit that outputs a detection signal upon receiving a signal of a detection result of the sensor circuit; and a control circuit that outputs control signals to the sensor circuit and the sensor signal processing circuit and receives the detection signal from the sensor signal processing circuit, configured in that the sensor circuit and the sensor signal processing circuit operate intermittently by the control signals from the control circuit.

First claim

What is claimed is:

1. A current output-type detection device that changes an amount of current consumption of the device itself in response to a detection result, the detection device comprising:
a sensor circuit that detects a physical quantity to be detected;
a sensor signal processing circuit that outputs a detection signal upon receiving a signal of a detection result from the sensor circuit; and
a control circuit that outputs control signals to the sensor circuit and the sensor signal processing circuit and receives the detection signal from the sensor signal processing circuit,
wherein the sensor circuit and the sensor signal processing circuit operate intermittently in response to the control signals.

2. The detection device according to claim 1 , wherein the control circuit outputs the control signal to at least either one of the sensor circuit and the sensor signal processing circuit during a period of receiving the detection signal from the sensor signal processing circuit, and increases the current consumption of the detection device.

3. The detection device according to claim 1 , wherein the control circuit outputs the control signal to at least either one of the sensor circuit and the sensor signal processing circuit during a period of not receiving the detection signal from the sensor signal processing circuit, and increases the current consumption of the detection device.

4. A current output-type detection device that changes an amount of current consumption of the device itself in response to a detection result, the detection device comprising:
a sensor circuit that detects a physical quantity to be detected;
a sensor signal processing circuit that outputs a detection signal upon receiving a signal of a detection result from the sensor circuit; and
a control circuit that outputs control signals to the sensor circuit and the sensor signal processing circuit and receives the detection signal from the sensor signal processing circuit,
wherein the sensor circuit and the sensor signal processing circuit operate intermittently in response to the control signals; and
a constant current circuit,
wherein the constant current circuit flows a constant current therefrom in response to a control signal from the control circuit and increases the current consumption of the detection device.

Assignees

• Sii Semiconductor Corp
• Ablic Inc

Inventors

• Ariyama Minoru

Classifications

• G01D21/00 Primary

  Measuring or testing not otherwise provided for · CPC title

• G01D3/10

  with provision for switching-in of additional or auxiliary indicators or recorders · CPC title

• G01R33/0023 Primary

  Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration (G01R33/0017 takes precedence) · CPC title

• G01R33/02

  Measuring direction or magnitude of magnetic fields or magnetic flux (G01R33/20 takes precedence) · CPC title

• G08C19/02

  in which the signal transmitted is magnitude of current or voltage (G08C19/36, G08C19/38 take precedence) · CPC title