Forest Fire Detection Sensor Unit Using Soil Moisture Analysis
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Solution Overview
Problem
Existing forest fire detection systems are inefficient due to high power consumption, limited battery life, and high costs associated with satellite monitoring and control terminal equipment, as well as the need for geostationary satellites and multiple mini-satellites, which also contribute to carbon emissions.
Innovation Solution
A forest fire early detection and risk analysis system comprising a sensor unit with a signal source and detector, a communication unit for wireless data transmission, and an evaluation unit that uses gas and temperature sensors, moisture sensors, and a mesh gateway network with LoRaWAN protocol for efficient data communication and low-power operation, allowing for reliable and cost-effective monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite monitoring is used for forest fire detection, then monitoring coverage is improved, but cost and carbon emissions increase significantly
Solution Approach 1:
The patent replaces expensive satellites with numerous inexpensive ground-based sensors distributed throughout the forest area. These low-cost sensors provide continuous monitoring coverage without the prohibitive costs of satellite acquisition, launch, and maintenance, directly resolving the contradiction between coverage area and manufacturing cost.
Solution Approach 2:
Instead of using a single expensive satellite to monitor the entire forest area, the patent deploys multiple copies of inexpensive sensor units across the terrain. Each sensor unit replicates the detection function locally, collectively providing comprehensive coverage that matches or exceeds satellite capability at a fraction of the cost.
2Reliability
If control terminal with GPS unit and powerful RF unit is used, then fire alarm functionality is improved, but power consumption increases
Solution Approach 1:
The patent extracts the GPS and powerful RF alarm functions from the distributed sensor units and concentrates them in a central control terminal. This allows the sensor units to operate with minimal power consumption for detection only, while the control terminal handles communication and alerting functions, resolving the power consumption issue.
Solution Approach 2:
The patent combines multiple functions (detection, processing, communication, and alarm) into an integrated system where sensor units communicate with a central control terminal. This consolidation allows efficient power management where battery-powered sensors perform only detection, and the control terminal handles energy-intensive communication and alerting functions.
3Duration of action of stationary object
If geostationary satellite is used for monitoring, then continuous monitoring is achieved, but orbital completion time increases area unmonitored
Solution Approach 1:
The patent divides the continuous monitoring function into multiple distributed sensor units that operate simultaneously across different locations. Unlike a single satellite that must complete its orbital cycle, these segmented sensors provide overlapping coverage zones that ensure continuous monitoring without gaps, eliminating the unmonitored time problem.
4Area of stationary object
If multiple mini-satellites are deployed for low orbit monitoring, then coverage is improved, but launch cost and complexity increase
Solution Approach 1:
The patent replaces multiple expensive mini-satellites with numerous inexpensive ground-based sensor units. Each sensor unit is a low-cost, simple device that can be deployed in large numbers to achieve the same coverage area, dramatically reducing both financial cost and operational complexity while maintaining or improving monitoring effectiveness.
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 reliable, precise, and cost-effective forest fire detection and risk analysis by reducing power consumption, extending battery life, and using a network of inexpensive sensors, while minimizing carbon emissions and operational costs.
Implementation Method 1
A sensor unit has a signal source for emitting a signal and a detector unit for detecting a backscattered signal
Implementation Method 2
The signal comprises an acoustic and/or electrical signal and/or an electromagnetic wave with a wavelength range of 1 mm to 30 cm
Data Source
AI summary
The invention relates to a forest fire early detection system and/or forest fire risk analysis system with a sensor unit and an evaluation unit for analyzing the measured signals supplied by the sensor unit, the sensor unit having a signal source for emitting a signal, which signal source is suitable and intended for passing a signal into a nearby test specimen, as well as a method for forest fire early detection and/or forest fire risk analysis.