Vehicle Bluetooth Earphone Docking for Interference-Resistant Call Control
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Solution Overview
Problem
Existing vehicle-mounted earphones that use magnetic field detection for answering or hanging up calls are prone to misjudgment due to external signal interference, affecting user experience and safety during driving.
Innovation Solution
A vehicle-mounted earphone system utilizing a car charger with magnetic members and terminal posts, along with sensing elements, ensures automatic connection and disconnection of Bluetooth earphones for call management, enhancing safety and convenience by avoiding manual intervention and reducing unstable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnetic field detection is used to answer or hang up calls, then the operation is automated and convenient, but the detection accuracy deteriorates due to external signal interference causing misjudgment
Solution Approach 1:
The patent introduces a magnetic shield as an intermediary component between the magnetic sensor and the external environment. This shield selectively blocks external magnetic field interference while allowing the magnetic field from the earphone's magnetic member to reach the sensor, thereby resolving the contradiction between automated operation convenience and detection accuracy
Solution Approach 2:
The patent extracts and isolates the magnetic sensing function from general environmental magnetic fields by using a magnetic shield that filters out external interference. This allows the system to respond only to the specific magnetic field generated by the earphone's magnetic member, improving measurement precision while maintaining automated operation
2Extent of automation
If the earphone is taken out from the earphone position to answer a call, then the call connection is established, but the risk of accidental disconnection increases due to unstable placement
Solution Approach 1:
The patent replaces the mechanical placement-based detection system with a magnetic field-based detection system. The magnetic sensor detects the presence of the earphone's magnetic member to trigger call answering, eliminating the need for physical removal and reducing accidental disconnections while maintaining automated operation
Solution Approach 2:
The system uses the earphone's own magnetic field as the triggering mechanism for call answering. When the earphone approaches or is placed in the earphone position, its magnetic field automatically triggers the sensing element to initiate the call connection, making the system self-activating without requiring manual intervention
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system allows for seamless call management through magnetic and sensing mechanisms, ensuring the earphones remain connected or disconnected based on voltage and magnetic field detection, improving driving safety and user experience by eliminating the need for manual handling and reducing the risk of accidental disconnections.
Implementation Method 1
a second magnetic member and two second terminal posts are provided in the Bluetooth earphone. When the Bluetooth earphone is placed in the earphone position, the second magnetic member and the first magnetic member attract each other
Data Source
AI summary
A vehicle-mounted earphone call system includes a car charger and a Bluetooth earphone; an earphone position is provided on the car charger and used for placing the Bluetooth earphone; a first magnetic member and two first terminal posts are provided in the earphone position; a second magnetic member and two second terminal posts are provided in the Bluetooth earphone; when the Bluetooth earphone is placed in the earphone position, the second magnetic member and the first magnetic member attract each other, and the two second terminal posts are connected to the two first terminal posts; when the mobile phone is requested to communicate, the Bluetooth earphone is used for answering, the Bluetooth earphone is taken out from the earphone position, and the mobile phone is controlled to answer; when the Bluetooth earphone returns to the earphone position, the Bluetooth earphone controls the mobile phone to hang up.