Magnetism Sensor Mode Switching Circuit

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Solution Overview

Problem

Existing magnetic detectors require reconfiguration of the circuit to switch between single output and dual output modes, increasing costs and complexity.

Innovation Solution

A bipolar detection-compatible magnetic detector with a mode switching portion in the integrated circuit, utilizing a logic circuit to switch between single output and dual output modes using a NOR or OR circuit, allowing both modes to be enabled with a simple circuit configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the circuit is reconfigured to switch between single output and dual output modes, then the magnetic detector can adapt to different application requirements, but the device complexity and production costs increase

Engineering Contradiction:
Improveoutput mode adaptabilityVSAvoidcircuit configuration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The integrated circuit is designed to perform multiple functions by incorporating a mode switching portion that can operate in both single output mode and dual output mode. The same circuit structure supports different output configurations, eliminating the need for separate circuits for each mode and thereby reducing overall device complexity while maintaining adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The circuit configuration is made dynamic through the mode switching portion, which can change its operational state based on the selected output mode. The switching mechanism allows the circuit to adapt its behavior dynamically, enabling it to function as either a single output or dual output circuit without requiring physical reconfiguration, thus reducing complexity.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the circuit is reconfigured to switch between single output and dual output modes, then the magnetic detector can adapt to different application requirements, but production costs increase

Engineering Contradiction:
Improveoutput mode adaptabilityVSAvoidproduction cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By designing a single integrated circuit that can operate in multiple output modes through an internal switching mechanism, the manufacturer produces one universal component rather than multiple specialized components. This reduces production costs by simplifying the manufacturing process, reducing inventory requirements, and lowering assembly complexity while maintaining the ability to adapt to different application needs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If a mode switching portion is added to the integrated circuit, then switching between output modes becomes possible, but the circuit complexity increases

Engineering Contradiction:
Improveoutput mode switching capabilityVSAvoidintegrated circuit complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The mode switching portion is merged into the integrated circuit as an integral component rather than being implemented as a separate external circuit. This integration combines the switching functionality with the existing circuit architecture, reducing the overall number of discrete components and interconnections, thereby minimizing the increase in circuit complexity while enabling mode switching capability.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables switching between single output and dual output modes using a single integrated circuit, reducing production costs and simplifying the circuit configuration while maintaining effective magnetic field detection capabilities.

Implementation Method 1

a first magnetoresistance element 23, which utilizes magnetoresistance effect that electric resistance varies on the basis of a variation in magnetic field strength of an external magnetic field in a (+) direction

Methodology Applied
Scientific EffectMagnetoresistance effect: Magnetoresistance

Data Source

PatentEP2065719B1Magnetism sensor
Publication Date: 2015.07.01 ALPS ALPINE CO LTD
  • EP2065719B1 patent drawingFigure 1
  • EP2065719B1 patent drawingFigure 2~3
  • EP2065719B1 patent drawingFigure 4~5

AI summary

A mode switching portion 50 that is able to switch between a single output mode and a dual output mode is provided. In the single output mode, both a (+) magnetic field detection signal and a (-) magnetic field detection signal are output from a first external output terminal 40. In the dual output mode, the (+) magnetic field detection signal is output from the first external output terminal 40 and the (-) magnetic field detection signal is output from a second external output terminal 41. By providing the mode switching portion 50 in an integrated circuit 22, mode selection is implemented. Particularly, such mode selection may be implemented by providing the single integrated circuit 22 with a simple circuit configuration. This can reduce production cost.