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A platform for research: civil engineering, architecture and urbanism
To provide a resonance type capacitive proximity sensor capable of detecting the proximity of a human body with high reliability by suppressing false detection and detection omission.SOLUTION: A capacitive proximity sensor 1 includes: oscillation means 33: an LCR resonance circuit 10 including a sensor electrode 11; a sensor circuit 20 which outputs a determination voltage signal Saccording to the capacitance of the sensor electrode 11; and a controller 32 which detects the proximity of a human body to the sensor electrode 11 based on the determination voltage signal S. The controller 32 includes a control to repeat alternately a calibration step for updating a detection frequency fand a first threshold Vand a detection step of detecting the proximity of a human body to the sensor electrode 11.SELECTED DRAWING: Figure 2
【課題】 誤検出と検出漏れ抑制し、人体の近接を高い信頼性をもって検出することができる共振方式の静電容量式近接センサを提供する。【解決手段】 静電容量式近接センサ１は、発振手段３３と、センサ電極１１を含むＬＣＲ共振回路１０と、センサ電極１１の容量に応じた判定電圧信号Ｓ１を出力するセンサ回路２０と、判定電圧信号Ｓ１に基づいてセンサ電極１１への人体の近接を検出する制御部３２を備える。制御部３２は、検出周波数ｆ１と第１閾値Ｖｔｈ１を更新するための較正ステップと、センサ電極１１への人体の近接を検出する検出ステップを交互に繰り返し実行する制御を含んでいる。【選択図】 図２
To provide a resonance type capacitive proximity sensor capable of detecting the proximity of a human body with high reliability by suppressing false detection and detection omission.SOLUTION: A capacitive proximity sensor 1 includes: oscillation means 33: an LCR resonance circuit 10 including a sensor electrode 11; a sensor circuit 20 which outputs a determination voltage signal Saccording to the capacitance of the sensor electrode 11; and a controller 32 which detects the proximity of a human body to the sensor electrode 11 based on the determination voltage signal S. The controller 32 includes a control to repeat alternately a calibration step for updating a detection frequency fand a first threshold Vand a detection step of detecting the proximity of a human body to the sensor electrode 11.SELECTED DRAWING: Figure 2
【課題】 誤検出と検出漏れ抑制し、人体の近接を高い信頼性をもって検出することができる共振方式の静電容量式近接センサを提供する。【解決手段】 静電容量式近接センサ１は、発振手段３３と、センサ電極１１を含むＬＣＲ共振回路１０と、センサ電極１１の容量に応じた判定電圧信号Ｓ１を出力するセンサ回路２０と、判定電圧信号Ｓ１に基づいてセンサ電極１１への人体の近接を検出する制御部３２を備える。制御部３２は、検出周波数ｆ１と第１閾値Ｖｔｈ１を更新するための較正ステップと、センサ電極１１への人体の近接を検出する検出ステップを交互に繰り返し実行する制御を含んでいる。【選択図】 図２
CAPACITIVE PROXIMITY SENSOR
静電容量式近接センサ
KUBO MAMORU (author)
2020-08-06
Patent
Electronic Resource
Japanese
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