Heating Sensor Characteristic Curve Determination
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Solution Overview
Problem
Existing heating systems lack precise control over flow temperature due to unknown sensor characteristic curves, leading to suboptimal energy savings and increased installation effort, as they rely on interpreting outside temperature changes without accurate prediction of heat requirement adjustments.
Innovation Solution
A method that records resistance values from both an unknown flow or outside temperature sensor and a reference sensor with a known characteristic curve to determine the characteristic curve of the unknown sensor, allowing for precise correction of flow temperature through a simulated resistance value sent to the heating controller, enabling dynamic adaptation and energy savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If weather-compensated heating control is used to adapt heat supply to outside temperature, then energy savings are improved, but measurement precision deteriorates because the outside temperature sensor has an unknown characteristic curve that cannot be precisely interpreted
Solution Approach 1:
A reference temperature sensor with a known characteristic curve is introduced as an intermediary element. This reference sensor provides accurate temperature measurements that serve as a mediator between the unknown outside temperature sensor and the heating controller, enabling precise interpretation of the unknown sensor's readings through characteristic curve determination and superposition.
2Measurement precision
If characteristic curves of unknown sensors are determined through advance measurements, then measurement precision is improved, but device complexity increases due to additional installation effort
Solution Approach 1:
The system performs self-characterization by automatically determining the characteristic curve of the unknown temperature sensor during operation using the reference temperature sensor. This eliminates the need for advance manual measurements and complex installation procedures, as the system configures itself automatically through superposition of temperature values and characteristic curves.
3Adaptability or versatility
If correction values for flow temperature are imposed on heating controllers without separate input, then adaptability is improved, but device complexity increases due to intervention in existing sensor connections
Solution Approach 1:
The correction functionality is merged with the existing temperature sensor connection by superimposing the characteristic curve of the unknown sensor with the reference sensor's characteristic curve. This combining approach allows correction values to be imposed through the existing sensor input without requiring separate correction inputs or complex additional control system interventions.
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 method allows for precise adjustment of flow temperature, improving energy efficiency and reducing installation complexity by determining and adapting the characteristic curve of unknown sensors, enabling optimal energy savings and dynamic control.
Implementation Method 1
a resistance value of a flow or outside temperature sensor (3) with an unknown characteristic curve and a resistance value of a reference temperature sensor (6) with a known characteristic curve are recorded
Data Source
Figure 1
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Figure 4~5
AI summary
The method involves determining a parameter resistance value (Rv1) by determination of a characteristic line, where the value corresponds to a parameter temperature value (Tv1). A measuring value pair is analyzed from a resistance value (Rv) of supply or outer temperature sensors (3) and a reference temperature value of reference temperature sensors (6) for determining the line. Estimation functions of different wave shape are adapted to the value pair by determination of a parameter, and adaptation for the selection of the estimation functions are increased than the line. An independent claim is also included for a device for manipulating a temperature measurement variable to an input of a heater regulator, comprising a measurement connection.