Analog Pressure Sensor for VR Controller Input Precision
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Solution Overview
Problem
Conventional hand-held controllers for virtual-reality systems can only register on/off states of user-input keys, limiting the control over the degree of actions performed in virtual environments.
Innovation Solution
Incorporating an analog throw switch with a pressure-sensitive sensor in the hand-held controller, allowing for the detection and differentiation of a range of pressures applied to user-input keys, enabling variable output beyond simple on/off states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional on/off switches are used in hand-held controllers, then the device complexity is reduced and ease of manufacture is improved, but the control precision and measurement precision of user input are limited to binary states only
Solution Approach 1:
The patent replaces conventional mechanical on/off switches with pressure-sensitive sensors that detect force magnitude. This substitution enables continuous analog input detection rather than binary states, improving measurement precision while accepting increased device complexity through the use of sophisticated sensing elements.
Solution Approach 2:
The invention changes the detection parameter from binary on/off states to continuous pressure magnitude. By measuring the degree of force applied rather than merely detecting presence or absence of input, the system achieves finer measurement precision and more nuanced control over virtual actions.
2Adaptability or versatility
If pressure-sensitive sensors are incorporated to detect range of pressures, then the control precision and action differentiation are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The pressure-sensitive switch serves multiple functions: it detects both the presence and magnitude of user input, enabling a single component to provide both binary and analog control capabilities. This multi-functionality increases adaptability while potentially simplifying the overall controller architecture by reducing the need for separate sensors.
3Ease of operation
If analog throw switches with pressure-sensitive sensors are used, then the ability to control degree of actions is improved, but the reliability and consistency of input detection may be affected by varying pressure thresholds
Solution Approach 1:
The system incorporates feedback mechanisms that monitor and respond to pressure magnitude in real-time. By providing continuous feedback about the degree of input applied, the system enables nuanced control while maintaining reliability through consistent detection thresholds and calibrated response levels.
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
This solution allows for nuanced control of actions in virtual-reality systems, enabling intermediate states such as partial hand opening or closing, enhancing the realism and precision of user interactions.
Implementation Method 1
The switch includes a sensor configured to detect and distinguish between a range of pressures applied to the casing
Data Source
AI summary
A method is performed at a virtual-reality system that includes a head-mounted display (HMD) and a hand-held controller. The hand-held controller includes a grip, a user-input surface, and a tracking ring. the user-input surface includes a user-input key that is mounted on the grip, and the user input key includes an analog pressure sensor. The tracking ring is coupled to the user-input surface and the tracking ring includes a plurality of illumination sources on an outer surface of the tracking ring. The method displays an image of a hand on the HMD, and senses pressure applied to the analog pressure sensor by a user holding the hand-held controller and wearing the HMD. The method displays, on the HMD, the degree of closing the image of the hand in proportion to the pressure applied to the analog pressure sensor.