Weld Zone Measurement Circuit for Faster Multi-Point Inspection
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Solution Overview
Problem
Existing weld zone measurement devices require significant time to measure multiple weld zones due to the need to reposition probes for each zone, leading to prolonged measurement times.
Innovation Solution
A measuring device that applies current to multiple weld zones simultaneously and detects combined voltage drops to determine the state of each zone, allowing for quicker assessment of multiple weld zones without repositioning probes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If probes are repositioned for each weld zone measurement, then measurement precision is maintained, but measurement time increases
Solution Approach 1:
The patent combines multiple individual weld zone measurements into a single simultaneous measurement process. By applying current to multiple weld zones through different application circuits and detecting the combined voltage response, the system evaluates multiple zones at once rather than sequentially repositioning probes for each zone.
Solution Approach 2:
The measurement system is designed with multi-functionality to handle multiple weld zones simultaneously. The application circuits and detection circuit are configured to work together on multiple zones at once, making the measurement device capable of performing multiple measurement functions in parallel rather than requiring separate measurements for each zone.
2Productivity
If multiple application circuits are used to apply current to multiple weld zones, then measurement speed increases, but device complexity increases
Solution Approach 1:
The measurement system is segmented into multiple independent application circuits, each capable of applying current to a specific weld zone. This segmentation allows parallel operation on multiple zones while maintaining modular simplicity in each individual circuit, rather than requiring a single complex circuit to handle all zones sequentially.
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
This approach significantly reduces measurement time by enabling the simultaneous evaluation of multiple weld zones based on combined voltage values, identifying defective zones efficiently.
Implementation Method 1
measures a resistance value of the weld zone... applying a current from one first probe to the weld zone and detecting an output signal
Implementation Method 2
detecting a voltage obtained by combining voltages indicating magnitudes of voltage drops generated respectively by the plurality of weld zones
Data Source
AI summary
A measuring device measures a state of a plurality of weld zones formed when a weldment is welded to a workpiece at a plurality of locations. This measuring device includes a plurality of application circuits that apply a current to each of one or more weld zones exclusively selected among the plurality of weld zones, and a detection circuit that detects a voltage obtained by combining voltages indicating magnitudes of voltage drops generated respectively by the plurality of more weld zones due to the application of the current. The measuring device further includes a processor that outputs information indicating the state of the plurality of weld zones on the basis of the voltages detected by the detection circuit.