Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Photosynthesis pid control method based on chlorophyll fluorescence as feedback signal

A chlorophyll fluorescence and photosynthesis technology, which is applied in the field of photosynthesis PID control, can solve the problems that sugars cannot be used as feedback signals to control photosynthesis, and state quantities cannot be measured.

Active Publication Date: 2021-03-30
JIANGNAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a practical problem is that in the short time of real-time control (in seconds), the state quantities of the system such as the amount of sugar cannot be measured, so the sugar itself cannot be used as a feedback signal to control photosynthesis

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
  • Photosynthesis pid control method based on chlorophyll fluorescence as feedback signal
  • Photosynthesis pid control method based on chlorophyll fluorescence as feedback signal
  • Photosynthesis pid control method based on chlorophyll fluorescence as feedback signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0030] The system output ChlF is measurable, and the fluorescence curve can reflect the important characteristics of plant growth, which has been widely used in fault diagnosis, automation, radar system and missile tracking. The extended Kalman filter technology can use the output to estimate the state quantity . The present invention proposes a method for estimating photosynthesis state variables using extended Kalman filter technology, and uses the most widely used PID control technology in the industry to regulate plant photosynthesis, which is of great significance to plant growth control.

[0031] Step 1: Test the chlorophyll fluorescence curve with a chlorophyll fluorescence...

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

No PUM Login to View More

Abstract

The invention discloses a photosynthesis PID control method taking chlorophyll fluorescence as a feedback signal. The invention relates to a photosynthesis PID closed-loop control method using chlorophyll fluorescence as the feedback signal. Through considering limited land resources and water resources, the controlling of plant growth is important. A current greenhouse control strategy mainly depends on the experience of farmers, regardless of the actual need of the photosynthesis of plants, therefore, optimal crop yields and effective and reasonable resource utilization can not be achieved.In the invention, the main process of the photosynthesis is represented by an overall mathematical model in which the chlorophyll fluorescence (ChlF) from measurable photosystem II (PSII) is used as output. Further, through an example, experimental data is fit to determine the parameter of a model, which is the rate constant of reaction.

Description

technical field [0001] The invention relates to the field of plant growth control, in particular to a photosynthesis PID control method based on chlorophyll fluorescence as a feedback signal. Background technique [0002] Plants can use solar energy to provide energy and food for living organisms. Considering limited resources and land, controlling plant growth is the future development trend of botany and automatic control. It's one of 125 global puzzles published by Science magazine. Greenhouse control strategies based on plant photosynthesis can reduce resource waste and increase crop yields. Therefore, it is extremely important to develop plant growth control strategies based on the photosynthetic needs of plants. According to modern control theory, models covering the main photosynthetic responses are essential for the development of plant growth control strategies. Therefore, it is necessary to design a feasible photosynthetic dynamics model system for maximizing p...

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): G05B11/42
CPCG05B11/42
Inventor 郭亚付丽疆夏倩朱启兵黄敏
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com