Detection device, sensor, electronic apparatus, and moving object

Patent metadata

Field	Value
Publication number	US-9869986-B2
Application number	US-201414551551-A
Country	US
Kind code	B2
Filing date	Nov 24, 2014
Priority date	Nov 25, 2013
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A detection device includes: a detection circuit which carries out detection processing of a physical quantity on the basis of a signal from a physical quantity transducer and outputs detected data of the physical quantity; and a correction unit which carries out correction processing on the detected data and outputs the data after the correction processing as output data. The correction unit carries out the correction processing to reduce an integration error generated in the case where the output data is subjected to integration processing, on the detected data of m bits, and outputs the output data of n bits (n and m being natural numbers, holding n<m).

First claim

What is claimed is:

1. A detection device comprising:
a detection circuit which carries out detection processing of a physical quantity on the basis of a signal from a physical quantity transducer and outputs detected data of the physical quantity; and
a correction unit which carries out correction processing on the detected data and outputs the data after the correction processing as output data;
wherein the correction unit carries out the correction processing to reduce an integration error generated in the case where the output data is subjected to integration processing, on the detected data of m bits, and outputs the output data of n bits (n and m being natural numbers, holding n<m),
wherein the correction unit carries out integration processing of an error in the output data with respect to the detected data and carries out the correction processing on the basis of an integration result value of the integration processing.

2. The detection device according to claim 1 , wherein
if there is a reading request for the output data, the correction unit outputs the data after the correction processing as the output data, and carries out integration processing of an error in the output data with respect to the detected data and holds an integration result value of the integration processing.

3. The detection device according to claim 2 , wherein
the correction unit carries out the correction processing on the output data outputted at the time of a next reading request, on the basis of the integration result value that is held.

4. The detection device according to claim 3 , wherein
the correction unit carries out comparison processing between the integration result value and a predetermined value, carries out addition processing of a result value of the comparison processing to the detected data, carries out discard processing of a decimal part of the detected data after the addition processing, and outputs the output data.

5. The detection device according to claim 1 , wherein
the correction unit carries out addition processing of a value obtained by multiplication processing of the integration result value by a predetermined gain, to the detected data, then carries out discard processing of a decimal part of the detected data after the addition processing, and outputs the output data.

6. The detection device according to claim 5 , wherein
the correction unit carries out multiplication processing of the integration result value by the gain that is set on the basis of an input rate of the detected data and an output rate of the output data, and carries out addition processing of a value obtained by the multiplication processing, to the detected data.

7. The detection device according to claim 1 , wherein
in a first mode, the data after the correction processing is outputted as the output data, and
in a second mode, the detected data on which the correction processing is not carried out is outputted as the output data.

8. The detection device according to claim 1 , wherein
the physical quantity transducer is an oscillator, and
the detected data is angular velocity data.

9. A sensor comprising:
the detection device according to claim 1 ; and
the physical quantity transducer.

10. A sensor comprising:
the detection device according to claim 2 ; and
the physical quantity transducer.

11. A sensor comprising:
the detection device according to claim 3 ; and
the physical quantity transducer.

12. An electronic apparatus comprising the detection device according to claim 1 .

13. An electronic apparatus comprising the detection device according to claim 2 .

14. An electronic apparatus comprising the detection device according to claim 3 .

15. A moving object comprising the detection device according to claim 1 .

16. A moving object comprising the detection device according to claim 2 .

17. A moving object comprising the detection device according to claim 3 .

18. A detection device comprising:
a detection circuit which carries out detection processing of a physical quantity on the basis of a signal from a physical quantity transducer and outputs detected data of the physical quantity; and
a correction unit which carries out correction processing on the detected data and outputs the data after the correction processing as output data;
wherein the correction unit carries out the correction processing to reduce an integration error generated in the case where the output data is subjected to integration processing, on the detected data of m bits, and outputs the output data of n bits (n and m being natural numbers, holding n<m),
in a first mode, the data after the correction processing is outputted as the output data, and
in a second mode, the detected data on which the correction processing is not carried out is outputted as the output data.

Assignees

• Seiko Epson Corp

Inventors

• Haneda Hideo

Classifications

• G05B19/054

  Input/output · CPC title

• G05B2219/25428

  Field device · CPC title

• G05B19/0423 Primary

  Input/output · CPC title

• G01C19/5614

  Signal processing · CPC title

• G01C19/5621 Primary

  the devices involving a micromechanical structure · CPC title