On-line evaluation and optimization system for operating status of PWM variable drug applicator

Abstract

The invention provides an on-line evaluation and optimization system for the operating status of a PWM variable drug applicator. The control system is based on the onsite bus distribution type system architecture of a CAN bus. The upper computer comprises an in-field information processing computer and the controller transmits the working parameters related to the drug spraying pressure, the liquid amount, the machine operating speed, and the liquid height to the in-field information processing computer through the CAN bus in real time. The in-field information processing computer detects and evaluates the various parameters through the built-in drug liquid pump working state online monitoring and evaluating module, the overflow device working state online monitoring and evaluating module, and the spray nozzle working state online monitoring and evaluating module and changes the control unit in real time to optimize and regulate the control parameters so as to improve the working quality. According to the invention, it is possible to carry out real-time evaluation on the drug administrating quality for PWM variable drug spraying, to match parameters in real time, and to achieve optimized regulations. For different planting environments and different agricultural products, multiple combinations can be realized, allowing the system to be applied to various plant protection machines.

Description

technical field

[0001] The invention relates to the field of agricultural plant protection machinery, in particular to an online evaluation and optimization system for the operating state of a PWM variable pesticide applicator. Background technique

[0002] Variable spraying means that the pesticide equipment prepares to spray the required amount of pesticides to the disaster-stricken area according to the specific conditions of crop diseases, insect pests and weeds in each small area of ​​the farmland, and sprays pesticides on demand according to the specific conditions of each area. Variable-variable spraying control mainly has three realization methods: variable pressure type, variable injection type of pesticide stock solution and pulse width modulation type. The variable pressure type realizes the change of the spray flow rate by adjusting the spray pressure. The variable injection type of pesticide stock solution realizes the adjustment of the actual pesticide applicat...

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