Supercharge Your Innovation With Domain-Expert AI Agents!

Paddy field moisture sensor

A sensor and moisture technology, applied in instruments, analytical materials, scientific instruments, etc., can solve problems such as the difficulty of reducing the cost of signal processing circuits

Active Publication Date: 2012-11-07
SOUTH CHINA AGRI UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of pure optical methods, the influence of soil type and soil particle size on the measurement results is reduced, and the sensitivity and accuracy of moisture testing are improved, but the complex optical system and its supporting signal processing circuits are difficult to reduce costs.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Paddy field moisture sensor
  • Paddy field moisture sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] There are impurities in the water in the paddy field, both dielectric and conductive particles. The electrodes inserted into the water can be equivalent to an RC parallel circuit. When the difference in water quality is not significant, the resistivity and dielectric coefficient of water are constant. The resistance value of the equivalent resistance of the electrode is inversely proportional to the depth of the electrode in the water, and the capacity of the equivalent capacitance is proportional to the depth of the electrode in the water. Measuring the RC change of this electrode can measure the depth of the electrode in the water. If the lower end of the electrode is close to the soil, the height of the paddy field water layer can be measured.

[0023] Paddy field soil contains moisture and impurities, among which water has important dielectrics and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a moisture sensor in paddy, comprising a case(3), a soil moisture probe(1) arranged on the bottom of the case(3), an aqueous layer probe(2) pasted on the two sides of the case(3), and a detection circuit(4) arranged inside the case(3), the detection circuit(4) emits a pulse square wave incentive signal to the soil moisture probe(1) and the aqueous layer probe(2), and receives the peak signal of the charging voltage of the two probes. The invention has precise detection, simple structure, and low cost.

Description

technical field [0001] The invention relates to the field of farmland information collection, in particular to a paddy field moisture sensor. Background technique [0002] The rice growth and maturity stages have different requirements for field water holding capacity. During the growth stage, the field should not be short of water, but the water layer should not be higher than the seedlings. During the maturity stage, the field should be drained and dried three times, but it should not be excessively dry. At present, these operations are decided by farmers based on experience. In the rice precision operation system, the decision-making of precision irrigation and drying requires a scientific measuring instrument to automatically monitor the field water holding capacity, mainly to monitor the water layer level and soil moisture content of the rice field. This requires the installation of paddy field moisture sensors in paddy fields. [0003] At present, the mature soil moi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00G01N27/00G01F23/00
Inventor 罗锡文胡均万周志艳阮欢
Owner SOUTH CHINA AGRI UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com