Diagnostic method of cross-wire fault
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Solution Overview
Problem
Existing diagnostic methods are ineffective in detecting cross-wire faults, which can cause unusual behaviors in monitored devices, and require skilled personnel to identify.
Innovation Solution
A diagnostic method using a controller to identify active heating devices, perform tests involving unique pairings of these devices, and determine deviations in temperature responses to detect cross-wire faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional heater-centric diagnostic methods are used, then specific device performance can be monitored, but cross-wire faults cannot be detected
Solution Approach 1:
The diagnostic method is designed to perform multiple functions: it can detect both device-specific failures and cross-wire faults by monitoring temperature deviations across multiple heating devices. The controller compares expected versus actual temperature responses to identify various fault types, making the diagnostic system universally applicable to different failure modes.
Solution Approach 2:
The patent introduces temperature deviation analysis as an intermediary diagnostic mechanism. By monitoring the difference between expected and actual temperature responses in heating devices, the system can indirectly detect cross-wire faults without directly measuring wiring conditions. This intermediary approach enables detection of faults that would otherwise be invisible to traditional diagnostic methods.
2Reliability
If cross-wire faults are detected through manual observation by skilled personnel, then unusual behaviors can be noticed, but the process is time-consuming and requires high expertise
Solution Approach 1:
The diagnostic system performs self-diagnosis by automatically monitoring temperature responses and comparing them against expected values. The controller independently identifies cross-wire faults through algorithmic analysis of temperature deviations, eliminating the need for manual observation by skilled personnel. This self-service capability reduces both time and expertise requirements while maintaining detection reliability.
Solution Approach 2:
The system implements continuous feedback monitoring of temperature responses from heating devices. By comparing actual temperature readings against expected values in real-time, the controller can immediately detect deviations indicative of cross-wire faults. This feedback mechanism enables automatic, rapid fault detection without requiring manual intervention or extended service time.
3Measurement precision
If unique pairing tests are performed on all active heating devices, then cross-wire faults can be identified, but the diagnostic process complexity increases
Solution Approach 1:
The diagnostic process is segmented into distinct phases: identifying active heating devices, performing unique pairing tests on those devices, and analyzing temperature responses. By dividing the diagnostic task into manageable segments focused only on active devices rather than all devices in the system, the method maintains precision while reducing unnecessary complexity.
Solution Approach 2:
The patent applies partial action by performing unique pairing tests only on active heating devices rather than all devices in the system. This selective approach maintains fault identification accuracy for relevant devices while avoiding the excessive complexity that would result from testing every device regardless of its operational state. The diagnostic effort is optimized to match the actual system configuration.
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 method effectively detects cross-wire faults and identifies responsible devices, enabling quick and focused service actions, unlike conventional methods that rely on chance discoveries.
Implementation Method 1
a temperature sensor disposed downstream of the heat exchanger
Data Source
AI summary
A diagnostic method of a system having at least one device under test and at least one peripheral device, the diagnostic method including obtaining a response of a test action conducted on the at least one device under test; and obtaining a response of a test action conducted on the at least one peripheral device; wherein if both the response of the test action conducted on the at least one device under test deviates from an expected result based on the test action conducted on the at least one device under test and the response of the test action conducted on the at least one peripheral device deviates from an expected result based on the test action conducted on the at least one peripheral device, a cross-wire fault is raised.