A tap sensor and tap detection system
CN224695276UActive Publication Date: 2026-08-28UNITED AUTOMOTIVE ELECTRONICS SYST
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Patent Information
- Application Number
- CN202521869192.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-29
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-08-29
AI Technical Summary
Technical Problem
[0004]鉴于以上现有技术的缺点，本实用新型的目的在于提供一种敲击传感器及敲击检测系统，以解决现有技术汽车的人手敲击式人车交互方式中在实现人手敲击识别时，普遍存在误触率高、环境适应性差、成本与性能难以兼顾等问题
Benefits of technology
[0019]本实用新型采用电容变化和加速度波形特征双重交叉验证机制，只有当人手接触引起电容变化且振动信号符合人手敲击的力学特征(如频率、幅值、时间间隔等)时，才判定为有效敲击，该机制可有效排除异物冲击和环境干扰，大幅提升了识别准确率，尤其在雨雪、沙石飞溅等复杂工况下表现优异，解决了传统单一传感器易受环境干扰的问题，并且仅需一个加速度传感器与一组或多组电容电极，无需多传感器阵列，极大地节省了硬件与算法成本，使用电容电极还可定位敲击区域，通过多组电容电极可提高定位精度，通过判断多次敲击是否为同一位置提高防误触性能。
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Abstract
The utility model provides a kind of knock sensor and knock detection system, knock sensor includes: the capacitive electrode component for obtaining capacitance signal, the capacitive electrode component is bonded in vehicle to be detected area;Shell, circuit board is installed in the shell, and acceleration detection module and micro-control unit for obtaining acceleration signal are integrated on the circuit board, the micro-control unit is connected with the capacitive electrode component, the acceleration detection module communication connection.The utility model can effectively exclude foreign matter impact and environmental interference, greatly improve the identification accuracy, solve the problem that traditional single sensor is vulnerable to environmental interference, and only one acceleration sensor and one or more groups of capacitive electrode are needed, without multiple sensor array, greatly save hardware and algorithm cost.
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