Capacitance-type sensing system and wearable device for indirect contact
AssigneesInterface Technology (ChengDu) Co., Ltd., Interface Optoelectronics (Shenzhen) Co., Ltd., General Interface Solution Limited
InventorsHua-Yueh Hsieh, Hsuan-Yun Lee, Ching-Lin Li, Yen-Heng Huang, Teng-Chi Chang, Bo-Rong Lin
Life of this patent
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Abstract
A capacitance-type sensing system for indirect contact includes a capacitance-type sensor and a grounding conductor. The capacitance-type sensor includes a sensing electrode and a driving circuit electrically connected to the sensing electrode. The driving circuit has a grounding terminal. The grounding conductor is electrically connected to the grounding terminal and configured to contact a grounding surface. A contact area of the grounding conductor is greater than or equal to 3000 mm2.
Claims18
A capacitance-type sensing system for indirect contact, comprising:
- a capacitance-type sensor comprising a sensing electrode and a driving circuit, wherein the sensing electrode and the driving circuit are electrically connected with each other, and the driving circuit has a grounding terminal;
- a grounding conductor electrically connected to the grounding terminal and configured to contact a grounding surface;
- a contacting conductor configured to contact the sensing electrode, wherein when the contacting conductor contacts the sensing electrode, the driving circuit obtains a first capacitance value of the sensing electrode to the grounding terminal;
- and
- a first conductor to-be-tested configured to contact the contacting conductor, wherein when the first conductor to-be-tested contacts the contacting conductor, the driving circuit obtains a second capacitance value of the sensing electrode to the grounding terminal, and determines whether the first conductor to-be-tested contacts the contacting conductor according to a difference value between the first capacitance value and the second capacitance value,
- wherein a contact area of the grounding conductor is greater than or equal to 3000 mm2.
A capacitance-type sensing wearable device for indirect contact, comprising:
- a capacitance-type sensor configured to be worn on a human body, the capacitance-type sensor comprising a sensing electrode and a driving circuit, wherein the sensing electrode and the driving circuit are electrically connected with each other, and the driving circuit has a grounding terminal, wherein when the human body contacts the sensing electrode, the driving circuit obtains a first capacitance value of the sensing electrode to the grounding terminal;
- and
- a grounding conductor configured to be worn on the human body, the grounding conductor electrically connected to the grounding terminal and configured to contact a grounding surface;
- wherein when a first conductor to-be-tested contacts the human body, the driving circuit obtains a second capacitance value of the sensing electrode to the grounding terminal, and determines whether the first conductor to-be-tested contacts the human body according to a difference value between the first capacitance value and the second capacitance value,
- wherein a contact area of the grounding conductor is greater than or equal to 3000 mm2.
Dependencies are inferred from the claim text.