Integrated Sensor Substrate for Vehicle Power Circuit Detection
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Solution Overview
Problem
Conventional detection devices for vehicle power supply circuits are cumbersome due to the increased number of parts required for current, voltage, and ground fault detection, which complicates the detection process and increases the number of components.
Innovation Solution
A detection device with a common substrate mounting a current detector, voltage detector, and ground fault detector, along with a controller that processes signals from these detectors, and positive and negative terminals connected to the power supply circuit, allowing for integrated detection and reduced wiring complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate detectors (current detector, voltage detector, ground fault detector) are mounted on the vehicle to detect power supply circuit conditions, then detection accuracy is improved, but the number of parts increases and device complexity increases
Solution Approach 1:
The patent combines multiple separate detectors (current detector, voltage detector, ground fault detector) into a single integrated detector unit. This merging approach maintains the detection accuracy of each individual detector while reducing the overall number of parts and simplifying the device structure. The integrated detector contains all necessary detection circuits and components in one unified module.
Solution Approach 2:
The integrated detector is designed to perform multiple detection functions simultaneously - measuring current, voltage, and ground faults - through a single device. This multi-functional design eliminates the need for separate specialized detectors for each parameter, thereby reducing part count while maintaining comprehensive detection capabilities across all power supply circuit conditions.
2Reliability
If multiple separate detectors are installed for current, voltage, and ground fault detection, then comprehensive detection coverage is improved, but wiring complexity increases
Solution Approach 1:
By merging multiple detection functions into a single integrated detector, the patent significantly reduces wiring complexity. Instead of requiring separate wire harnesses and connections for each individual detector, the integrated detector requires a single unified connection interface, thereby maintaining comprehensive detection coverage while simplifying the wiring architecture.
3Reliability
If separate detectors are mounted for each detection parameter, then detection reliability is improved, but the detection device size increases
Solution Approach 1:
The patent merges multiple detection functions into a single compact integrated detector unit. This consolidation maintains the reliability of each detection parameter by preserving all necessary sensing and processing circuits within the unified device, while significantly reducing the overall volume compared to mounting separate detectors for each function.
Data Source
AI summary
A sensor unit includes a current sensor that detects a current, a voltage sensor that detects a voltage, a ground fault sensor that detects a ground fault, and a common substrate on which the current sensor, the voltage sensor, and the ground fault sensor are mounted. In the sensor unit, for example, in a power supply circuit of a vehicle, the three sensors of the high voltage system can be integrated on the common substrate, so that an increase in the number of parts can be suppressed.