Active Stylus with Multi-Sensor Attitude and Gas Flow Sensing
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Solution Overview
Problem
Current active styluses lack comprehensive functionality and do not fully utilize the advantage of providing status information to touch control terminals, limiting their capabilities in touch control applications.
Innovation Solution
An active stylus equipped with sensors to sense attitude, gas flow parameters, and pen head stress, allowing for advanced touch control devices to generate paintings or calligraphy based on touch position, attitude, and gas flow information, simulating various writing and drawing experiences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If active stylus provides status information to touch control terminal, then functionality is improved, but device complexity increases due to power supply and signal transmitting module
Solution Approach 1:
The active stylus integrates multiple functions including attitude sensing via first sensor, gas flow sensing via second sensor, and stress sensing via third sensor, allowing a single device to perform writing, drawing, and fluid dynamics simulations without requiring multiple separate tools
Solution Approach 2:
The gas passage acts as an intermediary component that allows gas flow to be channeled through the stylus body to the outlet, enabling fluid dynamics interactions while maintaining a compact structure that balances functionality with device complexity
2Measurement precision
If multiple sensors are added to sense attitude, gas flow, and stress, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The sensing system is segmented into three independent sensor modules: first sensor for attitude information, second sensor for gas flow parameters, and third sensor for stress detection. This segmentation allows each sensor to be optimized for its specific function while maintaining overall system manageability
Solution Approach 2:
Multiple sensing functions are merged into a single integrated stylus device, with all sensors communicating through a unified signal transmitting module to the touch control terminal, reducing the need for separate devices and simplifying the overall system architecture
3Adaptability or versatility
If gas passage is added to enable fluid dynamics simulation, then adaptability is improved, but device complexity increases
Solution Approach 1:
The gas passage integrates multiple functions: it serves as a structural component of the stylus body, a sensing chamber for the second sensor, and a fluid dynamics simulation tool for creating virtual droplet effects, eliminating the need for separate tools for each function
Solution Approach 2:
The gas flow parameters (flow rate and pressure) are dynamically adjusted to simulate different writing and drawing effects, allowing the same hardware structure to produce varied outcomes by changing operational parameters rather than adding complex mechanical components
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 the functionality of active styluses by enabling the generation of realistic paintings or calligraphy on touch screens, simulating chalk, fountain pen, or brush pen effects, and achieving blowpipe graffiti through real-time data processing and fluid dynamics calculations.
Implementation Method 1
the first sensor comprises at least one of a gyroscope and a gravity sensor
Implementation Method 2
the first sensor comprises at least one of a gyroscope and a gravity sensor
Implementation Method 3
the second sensor comprises at least one of a varistor, a thin film transistor, and a MEMS based gas pressure sensor
Implementation Method 4
the third sensor being configured to sense stress on a tip of the pen head
Implementation Method 5
an active stylus can transmit a driving signal to change an electric field at the touch point, thereby changing an electrode capacitance at the touch point. By detecting the change of the electrode capacitance, a control chip of a touch screen of a touch control terminal can determine the position of the touch point
Data Source
AI summary
An active stylus comprising: a pen body, a pen head connected to the pen body, and a first sensor disposed in at least one of the pen body and the pen head. The first sensor is configured to sense attitude information of the active stylus. The active stylus is adapted to realize touch control on the touch control device based on the attitude information, thereby generating an effect of simulating chalk writing and drawing.