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| Fisher, Daniel K.; Sui, Ruixiu. |
| Liquid levels are measured in a variety of agricultural applications, and are often measured manually, which can be time-consuming and labor-intensive. Rapid advances in electronic technologies have made a variety of inexpensive sensing, monitoring, and control capabilities available. A monitoring system was developed and evaluated for automatic measurement of liquid levels, and demonstrated by monitoring water levels in evaporation pans used in evaporation studies and irrigation scheduling. The system is composed of an ultrasonic sensor, a microcontroller-based data logger, and a temperature sensor. The ultrasonic sensor measures the distance from the sensor to the liquid surface. Air temperature is measured by the temperature sensor, and is used to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Edge effect compensation; Hyperspectral imaging; Canker; Spatial correction; Geometric correction. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2343 |
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