Sensing Control Strip Trajectory Direction Detection
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Solution Overview
Problem
Existing sensing control methods for devices like massagers are prone to mis-triggering due to individual differences in user-operated conductive media, leading to inaccurate control of output parameters such as vibration intensity, heating, and rotation frequency.
Innovation Solution
A sensing control apparatus and method that utilizes multiple sensor units with predetermined threshold values to accurately determine the direction of an external object's trajectory, allowing for precise control of output parameters based on the sensed direction without requiring precise gestures, using proximity sensing and electrical signal variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If capacitance sensing is used to detect touch on control strip, then control functionality is achieved, but control accuracy deteriorates due to individual differences in user's finger characteristics
Solution Approach 1:
The sensing control strip is divided into multiple sensing units with different threshold values. Each sensing unit corresponds to a specific region and has a predetermined threshold. When an external object (finger) moves across the strip, different sensing units are activated based on their thresholds, enabling accurate determination of the object's trajectory direction without being affected by individual finger characteristics.
Solution Approach 2:
Different sensing units are assigned different threshold parameters. The thresholds are predetermined and vary across the sensing units. This parameter differentiation allows the system to recognize trajectory direction by comparing which sensing units are activated, thereby achieving accurate control despite variations in user's finger size, shape, or conductivity.
2Measurement precision
If trajectory direction sensing is implemented, then control precision is improved, but device complexity increases due to multiple sensor units
Solution Approach 1:
The sensing control strip is segmented into multiple independent sensing units, each with a predetermined threshold value. This segmentation enables the system to detect trajectory direction by comparing which segments are activated, achieving precise control while maintaining a relatively simple overall structure that can be integrated into existing devices.
3Measurement precision
If multiple sensing units with different thresholds are used, then trajectory direction detection accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
Different threshold parameters are assigned to different sensing units along the control strip. These threshold variations can be implemented through standard manufacturing processes such as varying the capacitance values or geometric dimensions of different sensing unit regions, making the solution manufacturable while achieving accurate trajectory detection.
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
Enhances control sensitivity and reliability, enabling users to achieve desired control effects with ease by accurately triggering output changes based on the sensed trajectory direction, reducing mis-triggering and improving user experience.
Implementation Method 1
the sensor is configured for generating an electrical signal variation in response to the approaching of an external object; the main control unit is configured for acquiring a trajectory direction of the external object according to electrical signal variations of the sensor
Data Source
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AI summary
The invention provides a sensing control method and apparatus, and a vibration massage apparatus. The method comprises: arranging a sensor which senses a trajectory of an external object, and controlling the change of output based on the direction of the trajectory. With the invention, a desirable control effect can be obtained based on the sensed direction of the trajectory of the external object without accurate positioning of the sensor. Not only the convenience of the sensing operation can be improved significantly, but also the control accuracy can be improved; meanwhile, the invention can be well applied to any device for control using several input control signals or variable input control signals for control, thus having a wide range of application and significantly optimizing user experience.