Magnetic Detection Device with Mode Switch Circuit
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Solution Overview
Problem
Current magnetic detection devices require separate manufacturing for different output modes, leading to increased costs as they cannot easily switch between bipolar 1-output, bipolar 2-output, and single-pole 1-output modes.
Innovation Solution
A magnetic detection device with a sensor unit and integrated circuit that can switch between output modes by adjusting the short-circuit or non-short-circuit state of switch terminals, allowing for easy selection between 1-output and 2-output modes using a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate magnetic detection devices are manufactured for different output modes, then each device can provide its specific output mode reliably, but the manufacturing cost increases and device versatility decreases
Solution Approach 1:
The magnetic detection device is designed with a mode switch circuit that can operate in multiple output modes (bipolar 1-output mode, bipolar 2-output mode, and single-pole 1-output mode) using a single device structure. This multi-functionality allows one device to replace what would traditionally require three separate devices, thereby reducing manufacturing costs while maintaining reliable performance in each mode through dedicated circuit pathways.
Solution Approach 2:
The device incorporates a mode switch circuit with switch terminals that can dynamically change their connection state based on external control signals. The circuit transitions between different output modes by altering the electrical connection configuration, enabling the same physical device to adapt its output characteristics dynamically without requiring physical reconfiguration or multiple devices.
2Adaptability or versatility
If a single magnetic detection device is designed to provide multiple output modes, then manufacturing cost decreases and versatility improves, but the device complexity increases
Solution Approach 1:
The mode switch circuit is segmented into distinct functional modules, each handling a specific output mode. The circuit is divided into multiple pathways that can be independently activated or deactivated through the mode switch terminals. This segmentation allows the complex multi-mode functionality to be organized into manageable, modular components, making the overall device easier to design, manufacture, and maintain despite its versatility.
3Manufacturing precision
If multiple magnetic detection devices are used to cover all output modes, then each device can be optimized for its specific mode, but the device quantity and system complexity increase
Solution Approach 1:
Multiple magnetic detection devices designed for different output modes are merged into a single integrated device. The mode switch circuit combines the functional capabilities of what would otherwise require separate devices into one unified structure. This merging reduces the total number of devices needed in the system from three to one, simplifying system integration and reducing component quantity while maintaining the optimized performance characteristics of each output mode through dedicated circuit pathways.
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 cost-effective operation of electrical products in desired output modes by eliminating the need for multiple devices, allowing users to select between bipolar 1-output, bipolar 2-output, and single-pole 1-output modes using a single magnetic detection device.
Implementation Method 1
A magnetic detection device (magnetic sensor) provided with a magnetoresistive effect element may be employed for detecting open/close state of an electrical product such as a folding mobile phone and a refrigerator. The electric resistance value of the magnetoresistive effect element changes in accordance with the external magnetic field intensity.
Data Source
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AI summary
A magnetic detection device is capable of switching among plural output modes, and is installed in an electrical product. An integrated circuit 22 is provided with two output terminals 40, 41 and a mode switch circuit 50 including a pair of switch terminals 58, 59. The mode switch circuit 50 is allowed to switch the output mode between the 1-output mode for outputting the (+) magnetic field detection signal and the (-) magnetic field detection signal from the output terminal 40, and the 2-output mode for outputting the (+) magnetic field signal from the output terminal 40 as one of the output terminals, and the (-) magnetic field detection signal from the output terminal 41 as the other output terminal in accordance with the shortcircuit state or the non-shortcircuit state between the switch terminals 58 and 59. The switch terminals 58, 59 are exposed on the surface of the device, and the shortcircuit state and the non-shortcircuit state may be externally adjusted.