CN-122028264-A - Agricultural environment light control method and system based on multi-sensing mechanism

CN122028264ACN 122028264 ACN122028264 ACN 122028264ACN-122028264-A

Abstract

The invention discloses an agricultural environment light control method and a control system based on a multi-sensing mechanism, comprising the steps of obtaining environment data in an agricultural environment; according to the environment data, calculating a dynamic illumination target value through an environment influence weighted fusion model, calculating an intermediate illumination target value through a smooth transition model according to the corrected illumination data and the dynamic illumination target value, calculating an illumination deviation value according to the corrected illumination data and the intermediate illumination target value, generating an illumination control signal based on a PID control algorithm according to the illumination deviation value, and outputting the illumination control signal to a light supplementing execution mechanism so as to realize illumination control in an agricultural environment. The system has the advantages that the sensing precision is improved through multi-dimensional environment data correction, the illumination requirement is matched through a dynamic fusion model, and finally the system robustness is enhanced through smooth transition and PID control, so that accurate and self-adaptive agricultural light control is realized.

Inventors

Sha Enqi
ZHU HANLIANG
HUI SHIQI
WANG SIYU
ZHOU ZHENGJIE
ZHANG YINGYING

Assignees

南京晓庄学院

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. An agricultural ambient light control method based on a multi-sensing mechanism is characterized by comprising the following steps: Acquiring environmental data in an agricultural environment, wherein the environmental data comprises temperature data, humidity data, air pressure data and corrected illumination data; according to the environmental data, calculating a dynamic illumination target value through an environmental impact weighted fusion model; calculating an intermediate illumination target value through a smooth transition model according to the corrected illumination data and the dynamic illumination target value; calculating an illumination deviation value according to the corrected illumination data and the intermediate illumination target value; And generating an illumination control signal based on a PID control algorithm according to the illumination deviation value and outputting the illumination control signal to the light supplementing executing mechanism so as to realize illumination control in the agricultural environment.
2. The agricultural ambient light control method based on the multi-sensing mechanism according to claim 1, the method is characterized in that the obtaining of the corrected illumination data comprises the following steps: Obtaining visible light data and infrared data in an agricultural environment, and calculating to obtain effective illumination radiation data; and dynamically compensating the effective illumination radiation data according to the temperature data, the humidity data and the air pressure data to obtain corrected illumination data.
3. The agricultural ambient light control method based on a multi-sensing mechanism according to claim 2, wherein the expression of the effective illumination radiation data is as follows: ; In the formula, Representing effective illumination radiation data at time t; visible light data representing a time t; infrared light data representing a time t; Representing the IR suppression coefficient; the expression of the corrected illumination data is as follows: ; In the formula, The corrected illumination data at time t; Representing a temperature correction coefficient; temperature data representing a time t; Representing a humidity correction coefficient; Humidity data representing a time t; Representing the air pressure correction coefficient; Air pressure data at time t is shown.
4. The agricultural ambient light control method based on a multi-sensor mechanism according to claim 1, wherein the expression of the dynamic illumination target value is: ; In the formula, Representing a dynamic illumination target value at a time t; representing a reference illumination requirement value when the growth stage is S; Representing a temperature weight coefficient; representing a humidity weight coefficient; representing the air pressure weight coefficient; A temperature influence function based on the temperature data T and the growth phase S at a time T; a humidity influence function based on humidity data H and growth stage S at time t; the barometric pressure influence function based on barometric pressure data P and growth phase S at time t is shown.
5. The agricultural ambient light control method based on a multi-sensor mechanism according to claim 4, wherein the expression of the reference illumination demand value is as follows: ; In the formula, Representing a reference illumination requirement value when the growth stage is S; representing the initial growth reference illumination intensity; representing the reference illumination intensity of the growth maturity; representing a growth stage mapping function.
6. The agricultural ambient light control method based on a multi-sensing mechanism according to claim 4, wherein the expression of the temperature influence function is as follows: ; In the formula, A temperature influence function based on the temperature data T and the growth phase S at a time T; temperature data representing a time t; The safety illumination proportionality coefficient under low-temperature stress is represented; representing a safe illumination proportionality coefficient under high temperature stress; a minimum temperature tolerance threshold value when the growth stage is S; the lower limit of the optimum temperature interval when the growth stage is S is shown; the upper limit of the optimum temperature interval when the growth stage is S is shown; A maximum temperature tolerance threshold value when the growth stage is S; the expression of the humidity influence function is as follows: ; In the formula, A humidity influence function based on humidity data H and growth stage S at time t; Humidity data representing a time t; represents the safe illumination proportionality coefficient under low humidity stress, Representing a safe illumination proportionality coefficient under high humidity stress; A minimum humidity tolerance threshold value when the growth stage is S; Indicating the growth stage as The lower limit of the optimal humidity interval; the upper limit of the optimal humidity interval when the growth stage is S is shown; A maximum humidity tolerance threshold value when the growth stage is S; the expression of the air pressure influence function is as follows: ; In the formula, A barometric pressure influence function based on barometric pressure data P and growth phase S at time t; air pressure data representing the time t; the basic coefficient representing the influence of the air pressure, A minimum air pressure tolerance threshold value when the growth stage is S; the highest air pressure tolerance threshold at the growth stage S is indicated.
7. The agricultural ambient light control method based on a multi-sensor mechanism according to claim 1, wherein the expression of the intermediate illumination target value is as follows: ; In the formula, An intermediate illumination target value at time t; the corrected illumination data at time t; Representing a dynamic illumination target value at a time t; Representing the coefficient of the smooth transition and, 。
8. The method for controlling agricultural environment light based on a multi-sensing mechanism according to claim 1, wherein the calculating the illumination deviation value comprises: calculating a normalized illumination value according to the corrected illumination data and the intermediate illumination target value; According to the normalized illumination value, calculating to obtain an illumination deviation value, wherein the expression of the illumination deviation value is as follows: ; ; In the formula, A light bias value at time t; Representing the normalized illumination value at time t; An intermediate illumination target value at time t; the corrected illumination data at time t is shown.
9. The agricultural ambient light control method based on a multi-sensing mechanism of claim 1, wherein the expression of the illumination control signal is as follows: ; In the formula, A lighting control signal representing a time t; representing a scaling factor with respect to illumination; representing an integral factor with respect to the illumination; Representing differential coefficients with respect to illumination; Represents the differentiation of time t; A light bias value at time t; representing an integral of the illumination deviation value at time t; the differentiation of the illumination deviation value at time t is shown.
10. An agricultural environmental light control system based on a multi-sensing mechanism, which is applicable to the agricultural environmental light control method based on the multi-sensing mechanism as claimed in any one of claims 1 to 9, and is characterized by comprising: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring environmental data in an agricultural environment, and the environmental data comprise temperature data, humidity data, air pressure data and corrected illumination data; The dynamic illumination module is used for calculating a dynamic illumination target value through an environment influence weighted fusion model according to the environment data; The intermediate illumination module is used for calculating an intermediate illumination target value through a smooth transition model according to the corrected illumination data and the dynamic illumination target value; The illumination deviation module is used for calculating an illumination deviation value according to the corrected illumination data and the intermediate illumination target value; And the illumination control module is used for generating an illumination control signal based on a PID control algorithm according to the illumination deviation value and outputting the illumination control signal to the light supplementing executing mechanism so as to realize illumination control in the agricultural environment.

Description

Agricultural environment light control method and system based on multi-sensing mechanism Technical Field The invention relates to an agricultural environment light control method and system based on a multi-sensing mechanism, and belongs to the technical field of environment light control. Background At the environment perception level, the traditional illumination control method has the defect of single dimension. When the illumination sensor in the existing scheme is used for measuring, the interference of environmental factors such as temperature, humidity and air pressure cannot be fully considered. Specifically, the high temperature environment aggravates the sensor thermal noise, the change of humidity is easy to cause the change of the refractive index of the optical path, and the air pressure fluctuation affects the spectral transmission characteristic. These factors act together to cause a significant deviation between the raw measurement values obtained by the sensor and the effective amount of optical radiation actually received by the crop canopy, so that the underlying sensory data is misaligned, thereby affecting the reliability of all subsequent control decisions. In the aspect of generating a control target, the existing illumination control technology mostly adopts fixed illumination setting values or can only perform limited stage switching. The static target setting mode is difficult to match with different physiological demands of crops in different growth stages such as seedling stage and fruiting stage, and does not consider dynamic influence of environmental stress factors on actual illumination tolerance capability and demand intensity of the crops. For example, when temperature discomfort or humidity is too high, the crop's response to environmental stress can change its actual ability to withstand light. However, existing control strategies lack intelligent decision mechanisms that can fuse the real-time state of the environment with the crop growth model, resulting in the disjoint of illumination supply from the actual demands of the crop. In addition, existing lighting control strategies also suffer from significant drawbacks in terms of robustness and adaptability. The PID control scheme is adopted to directly act on the absolute deviation between the fixed target value and the measured value, and when the illumination set value needs to be greatly adjusted due to crop replacement or growth stage conversion, the direct control mode is extremely easy to cause system oscillation, and control stability is affected. Meanwhile, the existing normalization method is designed based on a fixed range, cannot adapt to the dynamic change of a target value, so that the system has poor adaptability across working conditions under different working conditions, and is difficult to maintain stable and reliable control effects in complex and changeable agricultural environments. Disclosure of Invention The invention aims to overcome the defects in the prior art and provides an agricultural environment light control method and a control system based on a multi-sensing mechanism, wherein the sensing precision is improved by correcting multi-dimensional environment data, and the illumination requirement is matched by a dynamic fusion model; and finally, the robustness of the system is enhanced through smooth transition and PID control, so that accurate and self-adaptive agricultural light control is realized. In order to achieve the above purpose, the invention is realized by adopting the following technical scheme: in one aspect, the invention discloses an agricultural ambient light control method based on a multi-sensing mechanism, comprising the following steps: Acquiring environmental data in an agricultural environment, wherein the environmental data comprises temperature data, humidity data, air pressure data and corrected illumination data; according to the environmental data, calculating a dynamic illumination target value through an environmental impact weighted fusion model; calculating an intermediate illumination target value through a smooth transition model according to the corrected illumination data and the dynamic illumination target value; calculating an illumination deviation value according to the corrected illumination data and the intermediate illumination target value; And generating an illumination control signal based on a PID control algorithm according to the illumination deviation value and outputting the illumination control signal to the light supplementing executing mechanism so as to realize illumination control in the agricultural environment. Further, the obtaining of the corrected illumination data includes: Obtaining visible light data and infrared data in an agricultural environment, and calculating to obtain effective illumination radiation data; Dynamically compensating the effective illumination radiation data according to the temperature data, the humidity d