Sprinkler Pipe RF Communication for Fire Detection and Corrosion Monitoring
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Solution Overview
Problem
Fire protection systems, particularly dry pipe sprinkler systems, face challenges in communication and corrosion monitoring due to the need for extensive wiring and power supply to each device, and the difficulty in detecting corrosion within pipes without disrupting system operations.
Innovation Solution
The use of microwave or RF signals as a communication medium within the pipes of fire protection systems, allowing for low-power device communication and corrosion monitoring by processing signal changes to detect surface alterations indicative of corrosion, eliminating the need for external power and extensive wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If extensive wiring and power supply are provided to each device in dry pipe sprinkler systems, then communication and control capabilities are improved, but system complexity and installation difficulty increase
Solution Approach 1:
The existing fire protection pipes serve multiple functions: they transport water for fire suppression and simultaneously function as waveguides for microwave signal transmission. This eliminates the need for separate communication wiring infrastructure, reducing system complexity while maintaining communication reliability.
Solution Approach 2:
The patent replaces traditional electrical wiring and power supply systems with a microwave-based communication system that uses the existing pipe infrastructure. Low-power RFID devices communicate via microwave signals transmitted through the pipes, eliminating extensive electrical wiring requirements.
2Ease of operation
If traditional communication methods are used in fire protection systems, then device communication is achieved, but power consumption and wiring requirements increase
Solution Approach 1:
Low-power RFID devices in the fire protection system harvest energy from the microwave signals transmitted through the pipes, enabling them to operate without external power connections. The system uses itself (the transmitted microwave signals) to power the communication devices.
Solution Approach 2:
The patent transitions from high-power traditional communication systems to low-power RFID devices that operate by harvesting energy from microwave signals. This parameter change in power consumption levels enables simpler device design and reduced wiring requirements.
3Measurement precision
If corrosion monitoring is performed by disrupting system operations, then corrosion detection accuracy is improved, but system availability and safety are reduced
Solution Approach 1:
The microwave signal transmission through the pipes continues uninterrupted during normal fire protection system operation. Corrosion monitoring occurs continuously in the background without requiring system shutdown or disruption, maintaining both detection precision and system availability.
Solution Approach 2:
The same microwave signals used for communication also serve as the probe for corrosion monitoring. By analyzing changes in signal characteristics as they travel through the pipes, the system detects corrosion without requiring separate monitoring infrastructure or system disruption.
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
Enables a reliable, secure, and efficient communication network within fire protection systems, reducing maintenance needs and allowing for continuous corrosion monitoring without disrupting system operations, with the ability to pinpoint corrosion locations and predict maintenance requirements.
Implementation Method 1
The pipes of the fire protection system can act as a waveguide through which electronic components of the sprinkler system can communicate
Implementation Method 2
a first RFID device includes at least one first antenna that receives a fire detection signal from the sensor, and a processing circuit that causes the at least one first antenna to transmit a radio frequency (RF) signal corresponding to the fire detection signal through an internal volume of a pipe
Data Source
AI summary
A communication system includes a first radio frequency identification (RFID) device coupled to a sensor that monitors a fire condition and a second RFID device. The first RFID device includes at least one first antenna that receives a fire detection signal from the sensor, and a processing circuit that causes the at least one first antenna to transmit a radio frequency (RF) signal corresponding to the fire detection signal through an internal volume of a pipe coupled to a fluid source. The second RFID device includes at least one second antenna that receives the RF signal through the internal volume of the pipe. The second RFID device controls operation of a fluid distribution device responsive to receiving the indication of the fire detection signal.