Electromagnetic Valve Control via Current Voltage Analysis
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Solution Overview
Problem
Electromagnetic valves used in fluid dosing for internal combustion engines and exhaust gas treatment lack reliable operation and diagnosis capabilities, requiring significant hardware and computational resources for current and voltage monitoring.
Innovation Solution
A device with input devices writing measured values into memory, analysis and evaluation devices processing these values to modify control variables, and a processor-based system for state and change-over-time analysis to ensure reliable operation and diagnosis, utilizing digital/analog converters and direct memory access for efficient data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If comprehensive current and voltage monitoring is implemented for electromagnetic valve diagnosis, then diagnostic reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex hardware monitoring systems with a software-based evaluation method. The control device uses existing sensor data (current and voltage measurements) processed through software algorithms to perform comprehensive valve diagnosis, including overload detection, blockage detection, and dosing accuracy verification, without requiring additional hardware components.
Solution Approach 2:
The patent creates a virtual model of the electromagnetic valve operation by continuously monitoring and evaluating current and voltage characteristics. This software-based model replicates the function of complex hardware diagnostic systems, allowing comprehensive valve state assessment through computational analysis of electrical parameters.
2Measurement precision
If separate hardware components are used for current and voltage evaluation, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines current evaluation and voltage evaluation functions into a single integrated control device. Both measurements are processed together through software algorithms that analyze the relationship between current and voltage to detect valve faults, eliminating the need for separate hardware evaluation components while maintaining diagnostic accuracy.
Solution Approach 2:
The control device is designed to perform multiple functions: it monitors both current and voltage, evaluates valve operation status, detects faults, and controls the electromagnetic valve. This multi-functional approach consolidates what would traditionally require separate specialized hardware components into one universal control system.
3Reliability
If comprehensive valve operation monitoring is implemented, then operational reliability is improved, but productivity decreases due to increased processing requirements
Solution Approach 1:
The patent implements monitoring focused on critical parameters and threshold-based evaluation. Rather than continuously analyzing all possible valve parameters in detail, the system monitors key electrical parameters (current, voltage) and compares them against predefined thresholds to detect faults, providing sufficient operational reliability without excessive processing overhead.
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 reliable operation and diagnosis of electromagnetic valves by detecting potential defects and ensuring accurate dosing, reducing the risk of valve destruction and improving precision through cost-effective software-based solutions adaptable to various valves.
Implementation Method 1
electromagnetic valve (100)
Data Source
AI summary
In a device for controlling an electromagnetic valve, input device(s) write a multitude of measured values for the current and/or the voltage into a first memory to represent a characteristic. Analysis device(s) perform a state analysis and/or a change-over-time analysis. On the basis of the state analysis and/or the change-over-time analysis, evaluation device(s) correct at least one control variable, which characterizes the control, and write it into a second memory. Control device(s) control an output stage on the basis of the control variables.