Precision irrigation monitoring device

Abstract

The invention discloses a precision irrigation monitoring device, which belongs to the field of precision irrigation in modern agriculture and capable of continuously monitoring irrigation amount, evapotranspiration, growth amount, recovery amount of residual liquid, soil humidity and leaf temperature of crops in real time so as to provide parameter basis for precision irrigation. Irrigation amount, evapotranspiration, growth amount and recovery amount of residual liquid of the crops are monitored by a differential gravimetric method. A measuring structure comprises a culture tank load sensor (1), a crop load sensor (2), a residual liquid weight sensor (3), a culture tank (4), residual liquid leaks (5), a crop suspension bar (6), a free suspension support (7), culture tank suspension ropes (8), a soil humidity sensor (9), a leaf temperature sensor (10), an electromagnetic valve (17) and a residual liquid measuring support (18). The precision irrigation monitoring device is simple in structure, low in price, convenient in operation and effective in measurement, can be connected with an upper computer for communication, and can send start activating signals to an irrigation control system.

Description

technical field [0001] The invention relates to a precision irrigation monitoring device, in particular to a device capable of comprehensive monitoring of crop irrigation information. This device belongs to the field of precision irrigation in modern agriculture. It can continuously monitor the irrigation amount of crops, residual liquid recovery, transpiration, crop growth, soil humidity, and leaf temperature in real time, and transmit the data to the host computer. Irrigation provides a parameter basis. Background technique [0002] Water and fertilizer are the most basic needs of plants, and the amount of irrigation is an important factor affecting crop growth. Crop transpiration is an important plant physiological function, and its transpiration is an important parameter for calculating crop water demand, and is also the key information for greenhouse automation control. At present, the calculation methods for obtaining crop transpiration include water balance method,...

AI Technical Summary

Problems solved by technology

For example, a displacement lysimeter disclosed in Patent Application No. 201010518670.4 calculates the transpiration by measuring the displacement generated by the swing of the counterweight rod. The measurement accuracy is high, but the measurement mechanism is complicated and prone to failure

For example, the reflection spectrum-based automatic monitoring system for greenhouse crop growth status published in patent application No. 201010200985.4 uses spectral analysis to measure crop leaf area and other growth information, but the cost is relatively high

The above devices or methods are all based on the monitoring of individual crop information, and there is no device or method for comprehensive crop information monitoring, that is, there is a lack of a comprehensive monitoring of these information at the same time and can provide a start signal for the automatic irrigation control system installation

Images