PHYSICAL QUANTITY MEASUREMENT DEVICE, ELECTRONIC APPARATUS, AND MOVABLE BODY

To provide a physical quantity measurement device which can discriminate and detect faults on signal paths of first and second detection signals with simple processing and a simple configuration, and an electronic apparatus or a movable body and the like.SOLUTION: A physical quantity measurement dev...

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Bibliographic Details
Main Authors HIGUCHI TEPPEI, MURASHIMA NORIYUKI
Format Patent
LanguageEnglish
Japanese
Published 30.05.2019
Subjects
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary:To provide a physical quantity measurement device which can discriminate and detect faults on signal paths of first and second detection signals with simple processing and a simple configuration, and an electronic apparatus or a movable body and the like.SOLUTION: A physical quantity measurement device 5 includes: a sensor element 10 in which capacity couplings are formed between a drive electrode 13 and a first detection electrode 15 and between the drive electrode 13 and a second detection electrode 16; a driving circuit 30 supplying a driving signal DS to the drive electrode 13; a detection circuit 60 detecting physical quantity information corresponding to physical quantity on the basis of first and second detection signals S1 and S2 from first and second detection electrodes 15 and 16; and a circuit device 20 having a fault diagnosis circuit 150. The circuit device 20 has first and second switches SW1 and SW2 provided among first and second terminals TS1 and TS2 input with the first and second detection signals S1 and S2 and the detection circuit 60. The fault diagnosis circuit 150 performs fault diagnosis on the basis of a detection result of the detection circuit 60 when a connection state of the first and second switches SW1 and SW2 is changed.SELECTED DRAWING: Figure 1 【課題】簡素な処理、構成で第１、第２の検出信号の信号経路での故障を判別して検出できる物理量測定装置、電子機器又は移動体等の提供。【解決手段】物理量測定装置５は、駆動電極１３と第１の検出電極１５との間及び駆動電極１３と第２の検出電極１６との間に容量結合が形成されるセンサー素子１０と、駆動電極１３に駆動信号ＤＳを供給する駆動回路３０と、第１、第２の検出電極１５、１６からの第１、第２の検出信号Ｓ１、Ｓ２に基づき物理量に対応した物理量情報を検出する検出回路６０と、故障診断回路１５０とを有する回路装置２０を含む。回路装置２０は、第１、第２の検出信号Ｓ１、Ｓ２が入力される第１、第２の端子ＴＳ１、ＴＳ２と検出回路６０との間に設けられる第１、第２のスイッチＳＷ１、ＳＷ２を有し、故障診断回路１５０は、第１、第２のスイッチＳＷ１、ＳＷ２の接続状態を変化させたときの検出回路６０の検出結果に基づき故障診断を行う。【選択図】図１
Bibliography:Application Number: JP20170210816