Temperature Sensor Monitoring Fluid Solidification
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Solution Overview
Problem
Existing devices for monitoring and controlling fluids, such as water meters, face challenges in accurately measuring temperature changes, particularly the freezing point of water, due to the limited precision and cost of temperature sensors, which also vary over time, leading to imprecise detection and increased costs.
Innovation Solution
A device with a temperature sensor installed near the conduit to track temperature changes and evaluate the rate of variation, generating a warning signal when the temperature decrease indicates solidification, using a processing module to analyze signals from multiple sensors to ensure accuracy and avoid false alarms, and incorporating a second sensor for environmental temperature reference to confirm phase change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If inexpensive temperature sensors are used, then device cost is reduced, but measurement precision deteriorates
Solution Approach 1:
The system divides temperature monitoring into two segments: a primary inexpensive sensor for general monitoring and a secondary reference sensor for calibration. This segmentation allows the use of low-cost sensors while maintaining precision through the reference sensor's data
Solution Approach 2:
The system changes the parameter being measured from absolute temperature to temperature variation rate (dT/dt). This transformation allows inexpensive sensors to provide sufficient precision because the rate of change is more distinct and easier to detect than absolute temperature values, especially near phase transition points
2Measurement precision
If accurate temperature sensors are used, then measurement precision is improved, but device cost increases
Solution Approach 1:
A reference temperature sensor is introduced as an intermediary element. This reference sensor, positioned away from the conduit, provides a stable baseline that allows the primary sensor's readings to be corrected and calibrated, achieving high precision without requiring the primary sensor to be inherently accurate
Solution Approach 2:
The system creates a virtual reference by using the reference sensor's stable readings to establish a baseline temperature profile. This copied reference data is then used to correct and enhance the precision of the primary sensor's measurements
3Duration of action of moving object
If temperature sensors are used over time, then continuous monitoring is achieved, but sensor dispersion increases
Solution Approach 1:
The system implements feedback by continuously comparing the primary sensor's readings against the reference sensor's stable baseline. When drift or dispersion is detected in the primary sensor over time, the system uses the reference data to identify and correct these deviations, maintaining consistent precision throughout the monitoring duration
Solution Approach 2:
The reference sensor is pre-positioned and calibrated to provide a stable baseline before the monitoring period begins. This preliminary establishment of a reference profile allows for ongoing correction and compensation of sensor drift throughout the entire monitoring duration
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
The device provides precise detection of fluid solidification with modest-cost sensors, reducing resource consumption and generating reliable warning signals for fluid monitoring and control systems, suitable for water meters and other fluid monitoring applications.
Implementation Method 1
a temperature sensor capable of supplying values of temperature as a function of time
Implementation Method 2
capable of evaluating a rate of variation of temperature, and of generating a signal warning of the transformation of said fluid into the solid phase, when said rate of variation of temperature decreases within a given interval of time
Data Source
AI summary
A device for reading and transmitting measured temperature values for a device for monitoring a fluid flowing inside a pipe is disclosed. The device may include a temperature sensor configured to provide temperature values in accordance with time and a processing module, as well as a transmitter connected to the temperature sensor and configured to transmit signals that represent said temperature values, and a receiver configured to receive said signals. The temperature sensor may be mounted in a position that is close to the pipe. In addition, the processing module may be configured to assess a temperature variation speed, and of producing a signal to alert of the transformation of the fluid to the solid phase, when the temperature variation speed decreases over a given time interval.