Current Tester for Automotive Parasitic Leak Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting parasitic leaks in automotive circuits are time-consuming and challenging due to limited space, requiring technicians to remove fuses and use amp meters, which is cumbersome and inefficient.
Innovation Solution
A current tester with probes, a computing device, and an output device that measures voltage drop across a component, converts it to current, and signals the presence or absence of current using pre-determined voltage drop/current relationships, allowing for hands-free operation and simplified detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an amp meter is used to measure current in series with the component, then current measurement is accurate, but the operation becomes cumbersome and time-consuming due to requiring fuse removal and precise positioning in limited space
Solution Approach 1:
The patent introduces a current tester as an intermediary device that uses voltage drop measurement across the fuse as a mediator to indirectly determine current flow. Instead of directly measuring current through series connection, the device measures voltage drop in parallel and converts it to current information, eliminating the need for fuse removal and complex positioning while maintaining diagnostic capability
Solution Approach 2:
The patent replaces the mechanical/physical connection method (series connection requiring fuse removal) with an electrical measurement method (voltage drop measurement in parallel). By using voltage measurement instead of direct current measurement, the system eliminates mechanical manipulation while achieving the same diagnostic objective through electrical field interaction
2Difficulty of detecting and measuring
If traditional current testing methods are used requiring fuse removal and amp meter positioning, then current can be detected, but the diagnostic process becomes time-consuming and inefficient
Solution Approach 1:
The current tester performs preliminary voltage drop measurement across the fuse while it remains installed in the circuit. By preparing the measurement setup beforehand and using the existing circuit configuration, the device eliminates time-consuming fuse removal and reinstallation steps, enabling rapid current detection without disrupting circuit integrity
Solution Approach 2:
The current tester serves multiple functions: it measures voltage drop, converts voltage to current information, and provides diagnostic output all in one device. This multi-functionality consolidates what would otherwise require separate operations (fuse removal, meter connection, measurement, interpretation) into a single integrated tool, significantly reducing diagnostic time
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 quick and convenient detection of current in circuits, reducing the time and effort required to identify parasitic leaks, improving diagnostic efficiency in automotive diagnostics.
Implementation Method 1
measuring a voltage drop across the component, converting the voltage drop to a current via the current tester
Data Source
AI summary
A current tester includes: a probe, a computing device for converting a voltage drop across a component to a current, and an output device for signaling a presence or non-presence of current. The computing device stores a pre-determined voltage drop/current relationship for the component. A method for detecting current in a circuit includes: connecting a current tester to the component, measuring a voltage drop across the component, converting the voltage drop to a current via the current tester, and producing a signal by the current tester indicating a presence or non-presence of current in the circuit. A method for detecting current in a circuit may also comprises: connecting probes of a testing device to a component in the circuit; determining via whether the probes are properly connected to the component; and determining a voltage drop across the component to determine the presence or non-presence of current.