Fire Suppression Sensor Units for Temperature-Compensated Leak Detection
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Solution Overview
Problem
Existing fire suppression systems struggle to accurately differentiate between pressure changes caused by temperature fluctuations and actual leaks in pressurized tanks, leading to false alarms or undetected leaks, especially in chemical suppression systems where temperature variations can significantly affect tank pressure.
Innovation Solution
A sensor unit with integrated temperature and pressure sensors, coupled with a controller and antenna, calculates normalized pressure to account for temperature fluctuations, detecting leaks by analyzing pressure changes independent of temperature variations, and communicates data through a network for centralized monitoring and alerting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature and pressure monitoring are implemented in fire suppression tanks, then leak detection capability is improved, but false alarms increase due to temperature-induced pressure variations
Solution Approach 1:
The system transforms the pressure parameter into a temperature-compensated pressure value by incorporating temperature measurements and applying compensation algorithms. This allows the system to distinguish between pressure changes caused by temperature fluctuations and those caused by actual leaks, thereby improving leak detection accuracy while reducing false alarms.
Solution Approach 2:
The system continuously monitors both temperature and pressure parameters, using temperature data as feedback to adjust pressure interpretations. By establishing a relationship between temperature and pressure readings over time, the system can predict expected pressure values at given temperatures and identify deviations that indicate actual leaks rather than thermal effects.
2Reliability
If continuous monitoring of pressure and temperature is performed, then leak detection reliability is improved, but energy consumption increases
Solution Approach 1:
The sensor unit operates in periodic measurement cycles rather than continuous monitoring, taking pressure and temperature readings at predetermined time intervals. This periodic operation maintains adequate leak detection reliability while significantly reducing energy consumption compared to continuous monitoring, as the sensors and processing circuits remain inactive between measurement cycles.
Solution Approach 2:
The system performs measurements at sufficient intervals to detect leaks reliably without over-monitoring. By determining appropriate measurement frequencies that balance detection needs with energy constraints, the system achieves adequate leak detection reliability while minimizing energy consumption through selective rather than exhaustive monitoring.
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 system provides accurate leak detection in fire suppression tanks by normalizing pressure data, reducing false alarms and ensuring the system's readiness for fire suppression, suitable for environments where water-based suppression may damage sensitive assets.
Implementation Method 1
a pressure sensor configured to sense pressure and provide pressure data related to a pressure of the pressurized fluid
Implementation Method 2
a temperature sensor configured to sense temperature and provide temperature data related to a temperature of the pressurized fluid
Implementation Method 3
an antenna configured to wirelessly transfer the pressure data and the temperature data
Data Source
AI summary
A sensor unit for a fire suppression system includes a sensor module, a display module, a controller, and an antenna. The sensor module includes a first housing including a fitting configured to be coupled to a tank containing a fluid, a pressure sensor located within the first housing and configured to sense a pressure of a fluid and provide pressure data related to the pressure of the fluid, and a temperature sensor located within the first housing and configured to sense a temperature and provide temperature data related to the temperature of the fluid. The display module includes a second housing selectively attached to the first housing such that the display module is selectively removable from the display module, and a user interface. The controller is operatively coupled to the pressure and temperature sensors. The antenna is configured to transfer the pressure data and the temperature data to a network.


