Multi-Hop Mesh Gateway Network for Low-Power Forest Fire Detection
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Solution Overview
Problem
Existing forest fire detection systems are expensive, require high power consumption, and have limitations in early detection and predicting fire spread, with satellite-based systems being costly and inefficient, while ground-based systems suffer from false alarms and limited effectiveness at night or in dusty conditions.
Innovation Solution
A mesh gateway network with a multi-hop communication system using terminals, relays, and gateways, including self-sufficient energy supplies, enables reliable, expandable, and cost-effective forest fire detection, allowing for early detection and prediction of fire spread direction and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite-based monitoring is used, then detection coverage is improved, but cost and maintenance expense increase significantly
Solution Approach 1:
The patent divides the monitoring system into multiple ground-based sensor stations distributed across the monitoring area, each covering a local zone. These stations work independently but can be coordinated through the mesh network, replacing the single expensive satellite system with multiple affordable ground units that collectively achieve the same coverage.
Solution Approach 2:
The patent introduces mesh network gateways as intermediary devices that relay data between sensor stations and central servers. This intermediary infrastructure enables cost-effective ground-based monitoring by providing communication capabilities without requiring expensive satellite links for each sensor, thus reducing overall system cost while maintaining coverage.
2Measurement precision
If optical sensors are used for detection, then detection capability is improved, but false detections increase due to susceptibility to dust and night conditions
Solution Approach 1:
The patent combines multiple types of sensors (optical sensors, gas detection sensors, temperature sensors, humidity sensors) into integrated sensor stations. By merging different sensing modalities, the system cross-validates measurements and distinguishes actual fire conditions from false alarm sources like dust or nighttime conditions, thereby improving reliability while maintaining detection capability.
Solution Approach 2:
The patent implements feedback mechanisms where sensor data is continuously analyzed and compared against historical patterns and environmental conditions. The mesh network enables real-time data exchange between stations, allowing the system to learn from multiple data sources and reduce false detections through collective intelligence and adaptive algorithms.
3Loss of time
If control terminal triggers alarm directly, then alarm response time is improved, but power consumption of sensors increases
Solution Approach 1:
The patent extracts the alarm triggering function from the sensor units and relocates it to the mesh network gateways and server infrastructure. Sensors only perform their primary function of detecting and transmitting data, while the more power-intensive alarm generation and communication functions are performed by external gateways with larger power supplies, thus reducing sensor power consumption without delaying alarm response.
Solution Approach 2:
The patent introduces mesh network gateways as intermediary devices between sensors and the alarm system. These gateways buffer and forward sensor data, enabling sensors to enter low-power sleep modes while the gateway maintains network connectivity and triggers alarms when needed, thus decoupling the timing requirements from power consumption constraints.
4Measurement precision
If GPS unit constantly sends signal, then location accuracy is improved, but battery service life decreases
Solution Approach 1:
The patent implements periodic location updates instead of continuous GPS signaling. Sensors transmit their location information at scheduled intervals through the mesh network, maintaining sufficient location accuracy for fire detection purposes while allowing batteries to conserve energy during idle periods, thus extending service life without significantly compromising location precision.
Data Source
AI summary
The invention relates to a forest fire early detection system comprising a mesh gateway network having a network server, multiple first gateways, and multiple terminals, wherein the shortest communication connection between a terminal and the network server of the mesh gateway network is a multi-hop connection and wherein the multi-hop connection has two or more hops between similar elements, as well as a corresponding method for communication in a mesh network.