Localized Sprayer Injection Interfaces for Zero-Lag Dosing
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Solution Overview
Problem
Agricultural sprayers face challenges in minimizing lag time and latency between the introduction of injection products and their application with the proper concentration due to upstream mixing and distribution inefficiencies, leading to uneven product distribution in irregular fields.
Innovation Solution
A localized product injection system that provides a pressurized source of injection products directly at the product dispensers, such as sprayer sections or nozzles, allowing for instantaneous mixing and application without significant lag time or flow rate dependency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If injection product is introduced upstream in the carrier flow, then the system can maintain a simpler structure, but lag time and latency increase between injection and application
Solution Approach 1:
The injection system is segmented into multiple independent localized injection interfaces distributed along the carrier boom, with each interface serving a specific product dispenser. This segmentation allows instantaneous injection at each location without requiring complex upstream mixing systems, thereby reducing lag time while maintaining manageable system complexity through modular design.
Solution Approach 2:
Each localized injection interface provides injection capability specific to its associated product dispenser, allowing independent concentration control at each location. This local quality approach eliminates the need for centralized upstream mixing, reducing lag time while keeping each local interface relatively simple in structure.
2Manufacturing precision
If injection product is mixed in-line through header and boom tubes, then distribution can be achieved, but unpredictable variation in application occurs
Solution Approach 1:
The system segments the mixing function into individual localized injection interfaces, each responsible for mixing injection product with carrier flow at its specific product dispenser. This eliminates unpredictable variation caused by centralized in-line mixing through header and boom tubes, while each simple local mixer maintains low complexity.
Solution Approach 2:
Each localized injection interface acts as an intermediary between the injection product source and the product dispenser, providing controlled mixing at the point of application. This intermediary approach ensures uniform application by preventing variation introduced by long-distance in-line mixing, while keeping each intermediary unit relatively simple.
3Loss of time
If centralized injection system is used, then fewer components are needed, but lag time between injection and application increases
Solution Approach 1:
Injection products are pre-positioned in pressurized reservoirs at each localized injection interface, ready for instantaneous injection when needed. This preliminary action eliminates lag time between injection command and actual injection, while the modular nature of having multiple small reservoirs keeps each component simple despite the increased number of interfaces.
Solution Approach 2:
Pressurized reservoirs at each localized injection interface use pneumatic or hydraulic pressure to maintain injection product readiness and enable instantaneous injection. This approach eliminates lag time associated with pump response and flow delivery, while the use of standard pressurized reservoirs keeps each interface relatively simple despite multiplying the number of interfaces.
4Measurement precision
If upstream injection is used, then system structure is simpler, but flow rate dependency causes concentration variation
Solution Approach 1:
The injection control is segmented into independent localized interfaces, each with its own injection product reservoir and control valve. This segmentation allows each interface to control injection concentration independently of carrier flow rate variations, eliminating concentration variation caused by upstream injection, while each simple local control valve maintains low complexity.
Solution Approach 2:
Each localized injection interface serves as an intermediary that directly controls the concentration of injection product at its associated product dispenser. This intermediary position allows precise concentration control independent of upstream flow variations, while each intermediary unit remains relatively simple in structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables instantaneous and individually controlled application of agricultural products with precise concentration adjustments, ensuring even distribution across varying field conditions and eliminating lag time, even in low flow situations.
Implementation Method 1
maintain a pressurized source of the injection product immediately adjacent to each of the product dispensers
Implementation Method 2
the injection product is instantaneously provided through the injection port to the dispenser
Data Source
AI summary
A localized product injection system for use with a product dispensing system includes a product injection reservoir coupled with an injection header. One or more injection boom tubes are coupled with the injection head. A plurality of localized injection interfaces are configured for coupling at corresponding product dispensers of a plurality of product dispensers. The plurality of localized injection interfaces in communication with the one or more injection boom tubes. Each of the localized injection interfaces includes an interface valve and an injection port in communication with the interface valve. The injection port is configured for localized coupling and injection to the corresponding product dispenser. The plurality of localized injection interfaces maintains a controlled pressurized environment of an injection product to the plurality of product dispensers.