Precision irrigation monitoring device

A monitoring device and precise technology, applied in watering devices, horticulture, agriculture, etc., can solve the problems of comprehensive crop information monitoring devices or methods, complex measurement mechanisms, and easy failures, and achieve low requirements for the measurement environment and convenient and simple measurement , cheap effect

Active Publication Date: 2012-06-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 s

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0033] The implementation process will be described below by taking the cultured cucumber as an example.

[0034] step one

[0035] The cucumber plant is suspended and fixed with a string through the crop suspension bar 6 . Record the values ​​of the cultivation tank load sensor 1, the crop load sensor 2, and the residual liquid weight sensor 3 displayed on the 3-channel LED display 12.

[0036] step two

[0037]Open solenoid valve 17 and start irrigation. When the solenoid valve is closed to end irrigation, the value of the cultivation tank load sensor 1 is recorded, and the value of the cultivation tank load sensor 1 recorded twice is calculated by formula (1) to obtain the cucumber irrigation amount.

[0038] step three

[0039] After a period of time Δt, record the values ​​of the cultivation tank load sensor 1 , the crop load sensor 2 , and the residual liquid weight sensor 3 displayed on the 3-channel LED display 12 again.

[0040] step four

[0041] The values ​​r...

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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,...

Claims

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Application Information

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IPC IPC(8): A01G25/16
CPCY02A40/10
Inventor 姚舟华左志宇邹升朱文静张晓东
Owner JIANGSU UNIV
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