Pump System Concentration Measurement with Temperature Compensation
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Solution Overview
Problem
Existing pump systems in hydraulic and solar heating systems face challenges in accurately detecting liquid properties, such as concentration, under various operational conditions, leading to imprecise measurements.
Innovation Solution
A pump system equipped with a concentration measurement device that includes a sensor and an evaluation device, which utilizes additional signal sources to compensate for temperature and operational changes, ensuring precise concentration detection by integrating sensors within the flow path and connecting them to control electronics for real-time evaluation and correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If a concentration sensor is used to detect liquid properties in a pump system, then the ability to detect concentration is improved, but measurement precision deteriorates under varying operational conditions
Solution Approach 1:
The evaluation device receives signals from both the concentration sensor and a temperature sensor, then uses the temperature information to compensate for operational condition variations. This feedback mechanism allows the system to adjust concentration readings based on actual temperature conditions, thereby maintaining measurement precision despite changing operational parameters.
Solution Approach 2:
The system changes the parameters used for evaluation by incorporating temperature data alongside concentration sensor signals. The evaluation device processes both parameters together, using temperature as a compensating factor that adjusts the interpretation of concentration readings according to the actual operational conditions, thus resolving the precision issue.
2Measurement precision
If additional signal sources are integrated into the pump system, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The evaluation device is designed to handle multiple signal types (concentration sensor signals and temperature sensor signals) using a unified processing approach. This multi-functional design allows the same evaluation device to perform both temperature compensation and concentration measurement without requiring separate dedicated components, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent combines the concentration sensor and temperature sensor into a single measurement system that feeds into one evaluation device. By merging these functions into an integrated system rather than separate independent systems, the patent achieves improved measurement accuracy while controlling the overall device complexity through shared evaluation infrastructure.
Data Source
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Figure 2a
AI summary
The invention refers to a pump (2) system with a pump, at least one flow path (14) for a liquid and at least one first sensor (22; 28) arranged in or at said flow path, wherein the pump system comprises a concentration measurement device measuring a concentration in said liquid inside said flow path (14), wherein this concentration measurement device comprises said at least one first sensor (22; 28) and an evaluation device (26), said at least one first sensor (22; 28) is a concentration sensor and connected to the evaluation device (26) for evaluating the readings of said at least one first sensor (22; 28), said evaluation device (26) is connected to at least one further signal source (20; 24) providing at least one further parameter, and that said evaluation device (26) is designed in a manner such that it carries out an evaluation of at least one reading of said at least one first sensor (22; 28) whilst taking into account the at least one further parameter provided by the further signal source (20, 24) to output the concentration in the liquid, and a solar heating system comprising such a pump system.