Modular BMS Controller With Hot-Swappable I/O Configuration
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Solution Overview
Problem
Existing building management systems (BMS) face challenges with fixed point count and type input/output (I/O) interfaces, leading to redundant circuitry and increased costs due to the need for different controllers or input output modules (IOMs) to meet specific application requirements.
Innovation Solution
A modular controller device with a base and removable modules, featuring a processor and interface for power and communication, allowing for flexible configuration of I/O points and types through hot-swappable modules that are automatically identified and addressed by the main processor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed point count and type I/O interfaces are provided on controllers or IOMs, then the system can meet specific application requirements, but the cost of the controller or IOM increases and redundant circuitry is added
Solution Approach 1:
The controller is divided into a base unit and separate I/O interface modules. The base contains common circuitry (power supply, communication interfaces, processor), while I/O modules are separate components that can be attached as needed. This segmentation eliminates redundant circuitry in the base unit while allowing flexible configuration of I/O points through module selection.
Solution Approach 2:
The base controller is designed with universal, standardized interfaces that can accommodate multiple types of I/O modules. A single base unit can work with different I/O modules (analog inputs, digital outputs, communication modules) through standardized mechanical and electrical connections, making the base unit multi-functional and adaptable to various application requirements.
2Adaptability or versatility
If different field controllers or IOMs are purchased to obtain the right fixed point count, type and/or mix, then the appropriate I/O configuration is achieved, but additional redundant circuitry including power supply and communication interfaces is required
Solution Approach 1:
Multiple I/O interface types are merged into a single controller unit through the modular architecture. Instead of requiring separate controllers for analog I/O, digital I/O, and communication functions, the system combines these capabilities by attaching multiple I/O modules to one base controller, reducing the total number of devices needed.
Solution Approach 2:
The base controller is designed as a universal platform that can accommodate various I/O modules through standardized interfaces. This multi-functionality allows a single base unit to replace multiple specialized controllers, as it can be configured with different I/O modules depending on the application requirements.
3Ease of manufacture
If fixed point count I/O interfaces are provided, then the system can operate with standardized interfaces, but the cost increases and the configuration cannot be optimized for specific applications
Solution Approach 1:
The system segments the standardized interface functionality into the base controller while placing application-specific I/O functionality in separate modules. This allows the base to be manufactured with standardized, simplified circuitry while the modules provide the application-specific configuration options needed for different deployments.
Data Source
AI summary
A device for use in a building management system (BMS) is a controller device. The device includes a base comprising a first processor and a base interface, the first processor being configured to provide control operations for a device in the building system, and a first module installable on and removable from the base. The first module includes a first module interface for receiving power from and communicating with the base via the base interface. In some embodiments, the device includes an optional a second module installable on and removable from the base, the second module comprising a second module interface for receiving power from and communicating with the base via the base interface.