Limit Level Switch Parameterization Using Environmental Influence Intervals
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Solution Overview
Problem
Existing limit level switches in process and automation technology require complex and resource-intensive methods to ensure reliable switching points, often necessitating continuous measurement of environmental parameters to account for disturbances like temperature and pressure variations.
Innovation Solution
A method for parameterizing limit level switches that determines influence intervals for received signals based on environmental parameters, allowing for the selection of switching points that are optimally adapted to switching states and environmental conditions, reducing the need for continuous measurement and simplifying design and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous measurement of environmental parameters is implemented to account for disturbances, then reliability of switching points is improved, but device complexity and resource consumption increase
Solution Approach 1:
The patent applies preliminary action by determining influence intervals for environmental parameters during the parameterization phase before the device is put into operation. This allows the system to pre-calculate compensation values for temperature, pressure, and humidity effects, eliminating the need for continuous environmental measurement during operation while maintaining reliable switching points.
Solution Approach 2:
The patent changes parameters by using influence intervals that describe how received signals vary with environmental parameters. By determining these intervals once during parameterization and using them to adjust switching points, the system accounts for environmental disturbances without requiring continuous measurement, thus improving reliability while avoiding increased device complexity.
2Measurement precision
If influence intervals are determined for each device individually, then measurement precision is improved, but time and resources for parameterization increase
Solution Approach 1:
The patent performs the time-consuming determination of influence intervals and switching points during the initial parameterization phase rather than during continuous operation. This preliminary action allows precise, device-specific calibration to be completed once, after which the device can operate efficiently without repeated measurement cycles.
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 simplifies the parameterization of limit level switches by allowing for one-time determination of influence intervals, enabling reliable switching points without continuous environmental parameter measurement, thus enhancing operational efficiency and reducing design complexity.
Implementation Method 1
Determining at least one influence interval for a received signal received by the sensor unit as a function of at least one environmental parameter
Data Source
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AI summary
The present invention relates to a method for parameterizing an apparatus (1) for determining and/or monitoring a predefinable filling level, comprising at least one sensor unit (2) and electronics (6). The method comprises the following method steps: determining at least one influence interval (AE(U)) for a reception signal (E) received from the sensor unit (2) on the basis of at least one environmental parameter (U), determining a first value (E1) for the reception signal (E) or a variable derived from the reception signal (E) corresponding to a first switching state (S1), at which value the sensor unit (2) is in a first state, determining a second value (E2) for the reception signal (E) or a variable derived from the reception signal (E) corresponding to a second switching state (S2), at which value the sensor unit (2) is in a second state, and determining at least one third value (E3) for the reception signal (E) or a variable derived from the reception signal (E) corresponding to a first switching point (P1) on the basis of the first switching state (S1) and/or second switching state (S2) and taking into account the at least one influence interval (ΔE(U)).