Research on the Electrical Model of a Capacitive Soil Moisture Sensor

2012 ◽  
Vol 260-261 ◽  
pp. 917-925 ◽  
Author(s):  
Yan Xu ◽  
Wei Dong Yi ◽  
Ko Wen Jwo
Keyword(s):  
Experimental Data ◽  
Soil Moisture ◽  
Double Layer ◽  
Relative Permittivity ◽  
Electric Double Layer ◽  
Output Voltage ◽  
Sensor Output ◽  
Electrical Model ◽  
Moisture Sensor ◽  
Soil Moisture Sensor

The electrical model of a capacitive soil moisture sensor is considered in this paper. In the new model established, the contact resistor and contact capacitance are taken into account. It is pointed out that the electric double layer causes the formation of the contact resistor and contact capacitance. The electrical properties of the electric double layer are the effect of both physical electricity and electrochemistry, so the relationship between the contact capacitance and the soil relative permittivity does not follow the formula of the parallel plate capacitor. Based upon the diffuse electric double layer model, this paper successfully derives the formula of the contact capacitor , whose coefficients are determined by MATLAB simulation based on experimental data, and the soil relative permittivity. Besides, this paper has established the sensor-output-voltage-Vo -soil-moisture-θ curve and compared it to that derived from the model without considering the electric double layer. It is demonstrated that the correlation coefficient between the curve derived from the model this paper established and the experimental data is 0.9997, more accurately describing the relation between the sensor output voltage Vo and soil moisture θ.

PROTOTIPE APLIKASI PENYIRAMAN TANAMAN MENGGUNAKAN SENSOR KELEMBABAN TANAH BERBASIS MICRO CONTOLLER ATMEGA 328

2019 ◽  
Vol 5 (1) ◽  
pp. 97-106
Author(s):  
Rudi Budi Agung ◽  
Muhammad Nur ◽  
Didi Sukayadi
Keyword(s):  
Soil Moisture ◽  
Growth And Development ◽  
Large Scale ◽  
Simple Method ◽  
Moisture Sensor ◽  
Sensor Development ◽  
Soil Moisture Sensor ◽  
Application Systems ◽  
Harvesting Systems ◽  
Working Principle

The Indonesian country which is famous for its tropical climate has now experienced a shift in two seasons (dry season and rainy season). This has an impact on cropping and harvesting systems among farmers. In large scale this is very influential considering that farmers in Indonesia are stilldependent on rainfall which results in soil moisture. Some types of plants that are very dependent on soil moisture will greatly require rainfall or water for growth and development. Through this research, researchers tried to make a prototype application for watering plants using ATMEGA328 microcontroller based soil moisture sensor. Development of application systems using the prototype method as a simple method which is the first step and can be developed again for large scale. The working principle of this prototype is simply that when soil moisture reaches a certainthreshold (above 56%) then the system will work by activating the watering system, if it is below 56% the system does not work or in other words soil moisture is considered sufficient for certain plant needs.

scholarly journals Agricultural soil moisture sensor based on U-bend Plastic Optical Fibre (POF)

2021 ◽  
Vol 733 (1) ◽  
pp. 012025
Author(s):  
Murti Marinah ◽  
Nadhifa Aqilla Husna ◽  
Hafiz Salam ◽  
Agus Muhamad Hatta
Keyword(s):  
Soil Moisture ◽  
Optical Fibre ◽  
Agricultural Soil ◽  
Moisture Sensor ◽  
Soil Moisture Sensor

scholarly journals Crop Cultivation in a Greenhouse using IOT

2021 ◽  
Vol 9 (VI) ◽  
pp. 4432-4437
Author(s):  
K. Akanksha
Keyword(s):  
Soil Moisture ◽  
Crop Yield ◽  
Mobile Phones ◽  
Temperature Sensor ◽  
Moisture Level ◽  
Crop Cultivation ◽  
Moisture Sensor ◽  
Soil Moisture Sensor ◽  
Turn On ◽  
Light Sensor

Nowadays gardening has become a hobby for everyone. Everyone is showing interest in growing their own plants in their houses like terrace farming. So we have decided to do a project which can be useful for everyone even the farmers can be benefitted by our project. In our project we are preparing a greenhouse for cultivating different kinds of crops. Our greenhouse consists of arduino UNO, sensors like (temperature sensor, soil moisture sensor, colour sensor and light sensor), actuators. All these are used in sensing the outside environment and giving signals to arduino so that it sends the signal through GSM module and this GSM module will give us a message alert through our mobile phones like for example if the moisture is less in soil then we will get alert “your moisture has decreased water the plants” so that we can turn on our motor pumps to water. Here we are using thingspeak cloud for coding the arduino through IOT. Our project will also do its watering by itself when the moisture level decreases, this is done by soil moisture sensor. It is very reasonable and complete greenhouse can be constructed under Rs.10,000 which can save lots of money for the farmers. The crop yield will also be very good and this will be useful in increasing the economy of farming.

scholarly journals RANCANG BANGUN SISTEM PENYIRAMAN TANAMAN SAYUR BERBASIS ARDUINO DENGAN SENSOR KELEMBABAN TANAH

2020 ◽  
Vol 1 (1) ◽  
pp. 23-32
Author(s):  
Sampurna Dadi Riskiono ◽  
Roy Harry Syidiq Pamungkas ◽  
Yudha Arya
Keyword(s):  
Soil Moisture ◽  
Water Content ◽  
Manual Work ◽  
Tomato Plants ◽  
Moisture Sensor ◽  
Final Project ◽  
Soil Moisture Sensor ◽  
Turn On ◽  
System Components ◽  
Arduino Uno

Development at this time is increasing, people expect a tool or technology that can help human work, so technology becomes a necessity for humans. This final task is made a device that can do the job of watering tomato plants automatically. This tool aims to replace the manual work becomes automatic. The benefit of this tool is that it can facilitate the work of humans in watering chili plants. This tool uses a soil moisture sensor which acts as a soil moisture detector and sends an order to Arduino Uno to turn on the relay driver so that the wiper motor can splash water according to the needs of the soil automatically. The making of this final project is done by designing, making and implementing system components which include Arduino uno as a controller, driver relay to blow on and off the wiper motor, LCD (Linquit Cristal Display) to display the percentage value of water content

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