Detection device

• US 10,006,971 B2
• Filed: 04/06/2016
• Issued: 06/26/2018
• Est. Priority Date: 10/09/2013
• Status: Active Grant

• Current Assignee: Ablic Inc. (MinebeaMitsumi Inc.)
• Original Assignee: Ablic Inc. (MinebeaMitsumi Inc.)
• Inventors: Ariyama, Minoru
• Primary Examiner(s): Aurora, Reena
• Application Number:
  US15/091,784
• Publication Number:
  US 20160216339A1
• Time in Patent Office: 811 Days
• Field of Search: 324244
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for
• CPC Class Codes: G01D 3/10 with provision for switching-in of additional or auxiliary indicators or recorders
• CPC Class Codes: G01R 33/0023 Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration G01R33/0017 takes precedence
• CPC Class Codes: G01R 33/02 Measuring direction or magnitude of magnetic fields or magnetic flux G01R33/20 takes precedence

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.

Claims

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.