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Proximity sensing detection circuit, capacitance calibration method and device, and electronic equipment

A detection circuit and proximity sensing technology, applied in the field of communication, can solve problems such as detection failure of the detection path of the SARSensor chip, and achieve the effect of avoiding detection failure and flexible working range

Pending Publication Date: 2021-06-25
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiment of the present application is to provide a proximity sensing detection circuit, capacitance calibration method, device and electronic equipment, which can solve the detection failure problem existing in the detection channel of the existing SAR Sensor chip

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  • Proximity sensing detection circuit, capacitance calibration method and device, and electronic equipment
  • Proximity sensing detection circuit, capacitance calibration method and device, and electronic equipment
  • Proximity sensing detection circuit, capacitance calibration method and device, and electronic equipment

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0029] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," et...

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Abstract

The invention discloses a proximity sensing detection circuit, a capacitance calibration method and device, and electronic equipment, and belongs to the technical field of communication. The proximity sensing detection circuit comprises a proximity sensor which comprises a detection port, a detection branch and a central processing unit, wherein the detection branch is correspondingly connected with the detection port, the detection branch comprises an external capacitor and a capacitor adjusting unit, and the capacitor adjusting unit is connected with the detection port and the external capacitor; and the central processing unit is respectively connected with the capacitor adjusting unit and the proximity sensor. According to the invention, the capacitor adjusting unit is additionally arranged on the detection branch so that the external capacitance value of the proximity sensor is adjustable, the problem that the detection of the detection path of the proximity sensor fails in the use process of a user can be effectively avoided, and the working range of the proximity sensor is more flexible.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a proximity sensing detection circuit, a capacitance calibration method, device and electronic equipment. Background technique [0002] SAR (Specific Absorption Rate) Sensor is a smart capacitive proximity sensor specially designed for SAR applications. When the user uses the electronic device installed with the SAR Sensor, when the human hand approaches, the proximity will be reported. Among them, the key indicator of proximity is the useful value, which is the real-time dynamic range based on the calibration offset, and the offset represents the static operating point of the external capacitance of the Sar Sensor chip. [0003] With the continuous development of mobile communication technology, the continuous popularization of electronic equipment (such as mobile phones). The product structure design of electronic equipment and the complexity of antenna m...

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Application Information

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IPC IPC(8): G01V3/02G01V13/00
CPCG01V3/02G01V13/00
Inventor 胡雨晨唐金欢
Owner VIVO MOBILE COMM CO LTD