Modular Control System for Transport Refrigeration Units
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Solution Overview
Problem
Existing transport refrigeration units have fixed control systems with limited flexibility and scalability, making it difficult to add features or upgrade for increased storage or monitoring capabilities, which restricts diagnostic and prognostic functionalities.
Innovation Solution
A modular control system with a user interface, power control module, and interchangeable modules featuring flexibly configurable input and output connectors, an interface bus, and diagnostic tools that allow for modular identification and configuration, enabling enhanced diagnostic and prognostic capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed integrated control system is used, then the system structure is simple and reliable, but the flexibility and scalability are limited
Solution Approach 1:
The control system is divided into modular components that can be independently configured and combined. Each module performs a specific function, allowing the system to be customized for different applications by selecting and assembling appropriate modules rather than using a fixed integrated design.
Solution Approach 2:
The modular control system employs universal interfaces and standardized communication protocols that allow the same basic modules to serve multiple functions across different applications. This enables a single modular platform to adapt to various refrigeration unit configurations and requirements.
2Reliability
If additional features and functionality are added to fixed control systems, then diagnostic and prognostic capabilities improve, but storage and monitoring capacities remain limited
Solution Approach 1:
The control system features dynamic expandability where storage and monitoring capacities can be increased by adding modular components as needed. The system architecture allows for progressive enhancement of diagnostic and prognostic capabilities without being constrained by fixed initial configurations.
Solution Approach 2:
The modular design prepares the system for future upgrades by establishing standardized interfaces and protocols from the outset. This preliminary structuring enables seamless addition of enhanced diagnostic and monitoring modules when needed, without requiring complete system redesign.
3Adaptability or versatility
If a complex control system with fixed inputs and outputs is designed, then it meets complex application needs, but unused inputs and outputs are wasted when used on simpler systems
Solution Approach 1:
The control system separates inputs and outputs into discrete modular components, allowing each module to be individually selected and connected based on the specific application requirements. This eliminates wasted connections by only assembling the necessary input/output modules for each particular use case.
Solution Approach 2:
Different modules are designed with specific input/output characteristics optimized for their intended functions. Each module provides the appropriate number and type of connections locally required for its function, rather than forcing a uniform complex interface on all system components.
Data Source
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AI summary
A control system (200, 300) for a refrigeration unit (100) is disclosed. The control system (200, 300) may include a user interface (202, 302), an interface bus (214, 314), a power control module (204, 304), a first module (206, 306), and a second module (208, 308). The interface bus (214, 314) may communicatively couple the user interface (202, 302), the power control module, the first module (206, 306), and the second module (208, 308). The user interface (202, 302) may be capable of receiving and dispatching information. The power control module (204, 304) may be capable of distributing and monitoring power to the control system (200, 300). The second module (208, 308) may have at least one connector with flexible input (208a, 308a) and output (208b, 308b) configuration capabilities. The first module (206, 306) may have a controller and at least one connector with flexible input (206a, 306a) and output (206b, 306b) configuration capabilities.