Magnetic Joystick Sensor With Synchronous Motion Detection

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Solution Overview

Problem

Existing joystick sensors face issues with short service life due to wear and poor contact in variable resistance components, and bulky circuit boards with complex reset structures lead to low control accuracy and synchronization problems.

Innovation Solution

The implementation of a synchronous joystick sensor using magnetic induction elements for non-contact detection, integrated with polyurethane elastic blocks and piezoelectric ceramic components for improved reset sensitivity and control accuracy, along with a neural network-based processing method to enhance synchronization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If variable resistance components with brush and carbon resistor are used, then resistance detection function is achieved, but service life is short due to wear and contact failure

Engineering Contradiction:

Improveservice lifeVSAvoidwear and contact failure

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the mechanical contact-based variable resistance component (brush and carbon resistor) with a magnetic field-based detection system. The joystick arm assembly includes a magnet that moves with the joystick, and the detection assembly includes a magnetic sensor that detects the magnet's position without physical contact. This substitution eliminates wear and contact failure while maintaining the resistance detection function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the joystick arm and the detection system. The magnet attached to the joystick arm generates a magnetic field that the magnetic sensor detects, allowing indirect measurement of joystick position without direct mechanical contact between the brush and carbon resistor.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If bulky circuit board and complex reset assembly structure are used, then reset function is achieved, but control accuracy decreases due to gaps and loose structure

Engineering Contradiction:

Improvecontrol accuracyVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the circuit board and reset assembly into a unified integrated structure. The circuit board serves dual functions as both the structural support and the reset mechanism base, while the reset assembly is integrated directly onto the circuit board rather than being a separate component. This reduces the number of parts and eliminates gaps between components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent uses a flexible printed circuit board (FPC) as the circuit board, which allows for compact integration of the reset assembly. The FPC can be bent and shaped to fit within the limited space, enabling the reset assembly to be positioned close to the joystick arm assembly without requiring a bulky rigid circuit board structure.

Inventive Principle:

Principle #30Flexible shells and thin films

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 extends the service life of joystick sensors, miniaturizes the circuit board, improves synchronization, and enhances control accuracy by using magnetic induction elements and polyurethane elastic blocks, while the neural network processing method ensures precise detection and correction of joystick movements.

Implementation Method 1

The swing detection assembly is configured to measure swing amount in the first direction and the second direction through a magnetic detecting element, and convert the swing amount into a first electronic signal and a second electronic signal

Methodology Applied

Scientific EffectMagnetic induction: Electromagnetic Induction

Implementation Method 2

determining whether an electronic signal set output by a piezoelectric ceramic assembly of the synchronous joystick sensor according is received

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Data Source

PatentUS11669122B2Synchronous joystick sensor, controller, synchronous processing method

Publication Date: 2023.06.06 GUANGDONG K SILVER IND CO LTD

AI summary

A synchronous joystick sensor is provided, the synchronous joystick sensor includes a joystick, a joystick arm assembly, a swing detection assembly, a reset assembly. The joystick arm assembly is sleeved on the joystick, the arm assembly is driven by the joystick to swing in a first direction and a second direction perpendicular to the first direction. The swing detection assembly is configured to swing detection assembly, and configured to measure the swing amount in the first direction and the second direction through a magnetic detecting element, and convert the swing amount into a first electronic signal and a second electronic signal; a reset assembly configured to make the joystick being in a vertical reset state when there is no external force.