Multi-Path Current Difference Detection With Integrated Hall Sensing
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Solution Overview
Problem
Current detection methods, such as current transformers and Hall sensors, are bulky, complex, expensive, and inaccurate for multi-path current difference detection, especially when dealing with alternating and direct currents, and require multiple sensors for multiple paths, increasing costs.
Innovation Solution
A multi-path current difference detection device comprising an induction component and a determination unit, which calculates a net current value and provides a detection signal based on a current threshold, implemented as an integrated circuit, capable of non-contact or contact detection, and utilizing components like Hall components and operational amplifiers for accurate detection of current differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current transformers are used to detect current in multiple paths, then current detection capability is achieved, but device size becomes large and circuit complexity increases
Solution Approach 1:
The patent combines multiple current detection paths into a single integrated circuit device. The detection device integrates multiple sensing elements and signal processing circuits that can simultaneously detect currents in multiple paths, eliminating the need for separate current transformers for each path and reducing overall system complexity.
Solution Approach 2:
The detection device is designed with multi-functional capability to detect currents in multiple different paths using a single device. The device can selectively detect current differences across various paths through configurable sensing elements and control logic, replacing the need for dedicated detection devices for each path.
2Measurement precision
If Hall sensors are used for current detection, then detection accuracy is improved, but device cost increases when detecting multiple paths
Solution Approach 1:
The patent integrates multiple Hall sensing elements within a single integrated circuit package, allowing simultaneous detection of currents in multiple paths. By combining multiple sensing functions into one device, the total number of discrete Hall sensors required is reduced while maintaining detection accuracy across all paths.
Solution Approach 2:
The integrated detection device provides universal current detection capability across multiple paths through a single device architecture. The device can be configured to monitor different current paths using the same sensing and processing infrastructure, eliminating the need to deploy separate Hall sensors for each path.
3Measurement precision
If current transformers are used for current detection, then current measurement is achieved, but device size becomes large
Solution Approach 1:
The patent replaces traditional electromagnetic current transformers with a miniaturized integrated circuit detection device. By using solid-state Hall sensing elements and integrated signal processing circuits instead of bulky electromagnetic transformers, the device achieves accurate current measurement in a compact form factor suitable for modern electronic applications.
4Adaptability or versatility
If multiple Hall sensors are used to detect currents in multiple paths, then detection coverage is improved, but device cost increases
Solution Approach 1:
The patent consolidates multiple sensing functions into a single integrated device that can simultaneously monitor multiple current paths. The device incorporates multiple Hall sensing elements and signal processing circuits within one package, providing multi-path detection capability without requiring proportional increases in the number of discrete sensor components.
Solution Approach 2:
The detection device is designed with universal applicability to detect currents across multiple different paths using a single device platform. The device can be configured to monitor various current paths through its integrated sensing elements and control logic, providing versatile multi-path detection without requiring separate dedicated sensors for each path.
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
The device achieves compact size, accurate detection of current differences with high sensitivity and reduced electromagnetic interference, operating in harsh environments and providing detection times under one second with over 95% accuracy.
Implementation Method 1
The induction component is a Hall component, a tunneling magnetoresistance, an anisotropic magnetoresistance, a giant magnetoresistance, a colossal magnetoresistance, an ordinary magnetoresistance, or a shunt resistor
Implementation Method 2
The induction component is a Hall component, a tunneling magnetoresistance, an anisotropic magnetoresistance, a giant magnetoresistance, a colossal magnetoresistance, an ordinary magnetoresistance, or a shunt resistor
Implementation Method 3
The signal amplifier is an operational amplifier
Data Source
AI summary
A multi-path current difference detection device includes an induction component and a determination unit. The induction component induces a plurality of currents flowing through a plurality of paths, and calculates a net current value of a plurality of current values of the plurality of currents. The determination unit receives a current signal corresponding to the net current value, and provides a detection signal when determining that the current signal is greater than or equal to a current threshold.