Wireless Soil Sensor with Dual-Frequency Capacitive Sensing
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Solution Overview
Problem
Conventional soil moisture monitoring systems are inefficient due to manual operation, expensive and cumbersome installation methods, and susceptibility to damage from field operations, leading to inaccurate data and resource wastage.
Innovation Solution
A wireless soil sensor system with a housing, processing unit, and capacitive sensing nodes that measure soil moisture and salinity, allowing for easy installation and continuous data transmission without trenching, using high and low frequency oscillators to calculate these properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If conventional environmental sensors are installed, then automatic interruption of the controller is achieved, but extensive installation time and difficult installation methods are required
Solution Approach 1:
The patent replaces the mechanical trenching system with a wireless transmission system. Instead of installing physical cables through trenches to connect probes to the controller, the system uses wireless communication to transmit data, thereby eliminating the complex mechanical installation process while maintaining automatic control functionality
Solution Approach 2:
The patent extracts the transmission medium from the system by removing physical cables and trenches. The essential function of data transmission is maintained through wireless communication, separating the control functionality from the transmission infrastructure and simplifying installation
2Reliability
If cables are trenched to each probe, then continuous data transmission is enabled, but the cables are susceptible to being severed by normal field operations
Solution Approach 1:
The patent replaces the mechanical cable connection system with a wireless communication system. This eliminates the physical cables that are vulnerable to damage from field operations while maintaining the reliability of continuous data transmission through wireless signal communication
3Productivity
If manual monitoring and control of system parameters is performed, then plant growth optimization is achieved, but time consumption and possibility of mistakes increase
Solution Approach 1:
The patent implements self-service automation where the system automatically monitors soil conditions, processes data, and controls irrigation without requiring manual intervention. The system serves itself by continuously measuring parameters, analyzing data, and executing control actions, thereby optimizing plant growth while eliminating time consumption and human error
Solution Approach 2:
The patent establishes a closed-loop feedback system where sensor data continuously feeds back to the control system. This automated feedback mechanism allows the system to monitor plant conditions, adjust irrigation accordingly, and optimize growth without manual monitoring, reducing time loss and eliminating mistakes
4Loss of information
If hand records are kept for plant growth analysis, then detailed analysis of data trends is possible, but additional time and effort are required with possibility of mistakes
Solution Approach 1:
The patent replaces manual data recording with automated electronic data collection and processing. The system automatically records soil parameters, plant growth data, and environmental conditions, eliminating the need for hand records while maintaining accuracy and reducing time consumption through digital storage and automated analysis
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, continuous monitoring of soil conditions, reducing manual intervention and equipment damage, enabling efficient watering and fertilization practices while minimizing resource wastage.
Implementation Method 1
capacitive sensing nodes that measure soil moisture and salinity
Implementation Method 2
using high and low frequency oscillators to calculate these properties
Data Source
AI summary
The present invention is a sensor device comprising: a housing; a processing unit assembly disposed within the housing, wherein the processing unit comprising a high frequency oscillator, a first voltage meter, a low frequency oscillator, a second voltage meter; a probe having a predetermined shape and profile attached to the processing unit and extending from the housing a predetermined distance; and a first sensing unit integrated into the probe and in electrical communication with the high frequency oscillator and the first voltage meter; a second sensing unit integrated into the probe relative to the first sensing unit and in electrical communication with the low frequency oscillator and the second voltage meter.