What Kind of Sensors are Popular in Precision Agriculture?

Applied Tech Review | Wednesday, October 06, 2021

Sensors give more precise soil characteristics, which are required to perform site-specific management decisions effectively.

FREMONT, CA: Increasing population growth, climate change, less rainfall, and the demand for more food to sustain the people throughout the world are putting a lot of strain on arable farming, with negative consequences for traditional farming practices.

Agriculture must become "smart" to meet the ever-increasing consumption requirements of the global population, which necessitates using modern smart technology to discover solutions for the efficient usage of precious resources.

Due to the Internet of Things (IoT) and digital transformation, such innovative technologies can remotely track soil moisture, crop growth, and preventive measures to identify crop problems and risks.

Agriculture is focusing on remote management of agricultural activities through automation utilizing wireless sensors and the IoT to bring new information and make a better decisions.

A sensor is a small, inexpensive device that monitors or analyzes real-world circumstances like motion, heat, or light and transforms them into analogue or digital representations. Sensors have several benefits over other analytical techniques like chromatography and spectroscopy, including their resilience, small size, adaptability, and low mass-production expenses.

Sensors of various types are used in precision agriculture to determine the most important physical and chemical qualities of the soil that influence production.

Optoelectronic sensors

The combination of electronic processes with light and optical processes is the subject of optoelectronics. Optoelectronic devices are devices that allow for such interaction. In general, the sensors use the properties of various materials to create a spectral signature. A light source (emitter) emits light in a wavelength range, and a sensor (detector) for specified wavelength ranges make up the system. A common type of sensor in this category is the soil organic matter (SOM) sensor.

Ion Selective Electrode sensors

 Ion-selective electrode sensors measure the prospective of a particular ion in a solution. They're also used to figure out how much nitrogen is in the soil. The power is measured against a constant-potential reference electrode. The activity of a particular ion in a solution determines the potential difference between the two electrodes. Such action is due to the specification's concentration, which allows the end-user to perform an analytical measurement.

Mechanical sensors

The mechanical resistance of the soil is evaluated by mechanical sensors. These sensors record the force detected by the strain gauge or load cells as they penetrate or cut through the soil.

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