Integrated Auto Diagnosis Circuits for Precise Circuit Fault Analysis
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Solution Overview
Problem
Traditional automobile diagnosis devices are unable to accurately determine specific fault causes in circuit faults, as they rely solely on fault code data and lack adaptability for measuring voltage, current, and signal waveforms.
Innovation Solution
The integration of a multimeter circuit, oscilloscope circuit, and signal generating circuit within the automobile diagnosis device, which sends data to a master controller and host computer via a communication module, enabling the collection and analysis of multimeter and oscilloscope data to complement fault code information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional automobile diagnosis device reads fault code for diagnosis, then fault code data can be obtained, but specific fault cause cannot be accurately determined
Solution Approach 1:
The patent combines fault code reading capability with multimeter and oscilloscope measurement capabilities into a single integrated diagnosis device. The control unit coordinates all three measurement functions, allowing the device to transition between reading fault codes and performing voltage/current/signal waveform measurements, thereby resolving the contradiction between diagnostic precision and device adaptability.
Solution Approach 2:
The diagnosis device is designed with multi-functionality to perform multiple diagnostic tasks: reading fault codes from the vehicle's electronic control system, measuring voltage and current using the multimeter circuit, and analyzing signal waveforms using the oscilloscope circuit. This universal capability allows the device to adapt to various fault diagnosis scenarios, whether simple code-based diagnosis or complex electrical parameter measurement is required.
2Ease of operation
If only fault code data is used for diagnosis, then diagnosis process is simple, but adaptability to different circuit faults is poor
Solution Approach 1:
The diagnosis device employs dynamic measurement capabilities where the multimeter and oscilloscope can be activated based on the specific diagnostic needs identified from fault codes. The control unit dynamically switches between different measurement modes (voltage, current, signal waveform) and adjusts measurement parameters, allowing the device to adapt its operation to various circuit fault scenarios while maintaining ease of use through automated control.
3Loss of information
If multimeter circuit and oscilloscope circuit are integrated into diagnosis device, then comprehensive diagnostic data can be collected, but device complexity increases
Solution Approach 1:
The patent implements a nested structure where the multimeter circuit and oscilloscope circuit are integrated within the diagnosis device's architecture, with the control unit coordinating all measurement functions. The control unit acts as a central coordinator that manages the complexity by providing a unified interface for operating all measurement functions, while the multimeter and oscilloscope modules are nested within the overall device structure, allowing comprehensive data collection without proportionally increasing operational complexity.
Data Source
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AI summary
Disclosed are an automobile diagnosis device (100), system (300) and method. The automobile diagnosis device (100) comprises: a diagnosis protocol transceiver (10) for acquiring fault code data of an automobile to be diagnosed; a communication module (20); a main controller (30), respectively electrically connected to the diagnosis protocol transceiver (10) and the communication module (20); a multimeter circuit (40), electrically connected to the main controller (30), and used for sending multimeter data to the main controller (30); an oscilloscope circuit (50), electrically connected to the communication module (20), and used for sending oscilloscope data to the upper computer (200) by means of the communication module (20); and a signal generating circuit (60), electrically connected to the main controller (30), and used for generating an analog waveform signal in response to a driving signal of the main controller (30).