Duplicate Detection Lines for Parallel Current Sensor Wiring
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Solution Overview
Problem
The increasing number of sensors in motor vehicles requires more connection pins to the engine control computer, leading to higher manufacturing costs and increased electrical failure risks due to splices in the wiring harness.
Innovation Solution
A duplication device that duplicates detection lines from current sensors, allowing them to be connected in parallel without splices, using a connection device with terminals for each detection line and its duplicate, reducing the need for additional pins and splices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of sensors is increased to improve monitoring accuracy, then measurement precision is improved, but the number of connection pins and splices increases leading to higher manufacturing costs and increased electrical failure risks
Solution Approach 1:
The patent combines multiple detection lines (first detection line and second detection line) into a single integrated sensor unit with internal parallel connection capability. This merging allows multiple sensors to be electrically connected in parallel without requiring external splices in the wiring harness, thereby maintaining monitoring accuracy while reducing electrical failure risks associated with multiple connection points.
Solution Approach 2:
The sensor design incorporates a universal connection structure that can handle multiple detection lines through a single integrated interface. The connection device is designed to accommodate both the first and second detection lines along with their duplicates, creating a multi-functional connection point that reduces the overall number of required connection pins and splices across the system.
2Quantity of substance
If current sensors are connected in parallel using splices in the wiring harness, then the number of connection pins to the engine control computer is reduced, but manufacturing cost increases and electrical failure risk increases
Solution Approach 1:
The patent extracts the duplication function from the external wiring harness and relocates it inside the sensor unit. The duplication device is integrated within the sensor, eliminating the need for external splices to create duplicate detection lines. This extraction of the duplication function to the sensor level simplifies the overall manufacturing process and reduces costs associated with wiring harness assembly.
3Adaptability or versatility
If splices are added to the wiring harness to connect current sensors in parallel, then adaptability of the sensor system is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent implements a nested structure where the duplication device is contained within the sensor unit, which itself is connected to the engine control computer. The first and second detection lines are nested within the sensor, along with their duplicates, creating a compact integrated unit. This nesting eliminates the need for complex external wiring harness modifications while maintaining system adaptability.
Data Source
AI summary
A current sensor including a sensitive portion with a first detection line and a second detection line; the sensitive portion is suitable for detecting the passage of a moving target, a connection device suitable for delivering a detection signal arising from the sensitive portion. The current sensor further includes a duplication device suitable for duplicating the first detection line to make a duplicate first detection line and for duplicating the second detection line to make a duplicate second detection line.