Modular Fluid Handling Control System With Distributed Intelligence
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Solution Overview
Problem
Traditional fluid handling systems require substantial engineering for each product, leading to inefficiencies in system performance, flexibility, reliability, and maintenance due to the need for purpose-built controllers, even for similar products.
Innovation Solution
A modular, intelligent fluid handling control system is divided into specialized components, such as a fluid control module, HMI, heater control, and motor control, with distributed intelligence and communication, using a standardized cable assembly and CAN bus for communication, allowing for localized monitoring and control, and enabling easy expansion and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If purpose-built controllers are used for each product, then system control functionality is achieved, but engineering effort and system complexity increase substantially
Solution Approach 1:
The control system is segmented into modular intelligent components (fluid control module, HMI module, heater control module, motor control module) that can be independently developed, tested, and maintained. Each module encapsulates specific control functions, allowing parallel development and reducing overall engineering effort while maintaining system functionality.
Solution Approach 2:
The standardized communication bus and protocol enable a universal platform that can support multiple product variants. The same modular components can be reconfigured for different applications, reducing the need for purpose-built controllers for each product and substantially decreasing engineering effort across the product portfolio.
2Device complexity
If a single multi-function controller is used, then all control functions are integrated, but system reliability decreases when a portion fails
Solution Approach 1:
By dividing the monolithic controller into separate functional modules connected via a communication bus, the system achieves fault isolation. If one module fails, the others can continue operating independently, maintaining system functionality at a reduced capacity and improving overall reliability.
Solution Approach 2:
The communication bus acts as an intermediary layer between modular components, enabling loose coupling. This allows individual modules to fail without cascading failures affecting the entire system, as the bus manages communication and can route around failed components.
3Ease of operation
If modular components are distributed throughout the system, then localized monitoring and control improve, but wiring complexity increases
Solution Approach 1:
The standardized cable assembly serves as a universal interface that integrates power and communication functions. This single standardized connector replaces multiple specialized wiring harnesses, simplifying the physical distribution of modular components while maintaining localized control capabilities.
Solution Approach 2:
Power and communication signals are merged into a single standardized cable assembly rather than requiring separate wiring for each function. This consolidation reduces wiring complexity while enabling distributed modular architecture and localized control.
Data Source
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AI summary
A fluid handling control/monitoring system is divided into a network of modular, intelligent components. These individual components are generally specific to a certain function within the system and contain all the intelligence necessary to perform that function without external guidance. Examples of the different types of components include but are not limited to: human-machine interface (HMI), fluid control, heater control, motor control, field-bus communications and the like. While each type of board is specialized in function, it may control several items of the same nature. For instance, a heater control may be able to control several heaters on one system. Similarly, a fluid board may have the ability to receive input from more than one flow meter and then control fluid flow of more than one point. An example might be a plural component metering and dispensing system where two fluid components have to be combined in a precise mix ratio.