Modular RTU Architecture with Direct Controller I/O Connectors
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Solution Overview
Problem
Conventional remote terminal units (RTUs) have fixed data inputs and outputs, limiting their adaptability to installations requiring additional or different types of inputs/outputs, often necessitating multiple units, increasing size and cost.
Innovation Solution
The RTU hardware architecture features a modular design with a controller module and I/O modules connected via direct connectors that transport data and power, allowing for easy expansion and reduction of I/O ports without additional wiring or costly components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional RTUs with fixed I/O types are used, then they can be deployed in many environments without modification, but they require multiple units to meet specific installation requirements, increasing size and cost
Solution Approach 1:
The RTU system is divided into a controller module and multiple interchangeable I/O modules, each handling different data types (analog, digital, communication). This segmentation allows the system to be configured with only the necessary I/O module types for each specific installation, avoiding the need to deploy multiple complete RTU units and reducing overall system complexity.
Solution Approach 2:
The controller module is designed with universal connectivity capabilities through standardized connectors that can interface with various I/O module types. This multi-functionality enables a single controller module to work with different combinations of I/O modules, providing adaptability to different installation requirements without requiring multiple specialized RTU units.
2Adaptability or versatility
If multiple RTUs are deployed to meet specific I/O requirements, then the installation can accommodate diverse data types, but the size and cost of the installation increases
Solution Approach 1:
By segmenting the I/O functionality into separate, interchangeable modules, the system can accommodate diverse data types (analog inputs, digital outputs, communication interfaces) using only the specific modules needed for each installation, rather than deploying complete RTU units with all possible I/O types, thereby reducing the quantity of equipment required.
Solution Approach 2:
Multiple I/O module functionalities that would traditionally require separate RTU units are merged into a single controller module through standardized connectors, allowing diverse data types to be handled by one consolidated unit rather than multiple distributed units, reducing installation size and component quantity.
3Ease of manufacture
If fixed I/O configurations are used in RTUs, then manufacturing and deployment is simplified, but the system requires additional wiring and networking devices for expansion
Solution Approach 1:
The standardized connector design provides universal interfaces between the controller module and various I/O modules, eliminating the need for complex additional wiring or networking devices when expanding functionality. The same connector type handles all I/O module connections, maintaining manufacturing simplicity while enabling easy system expansion through module addition rather than additional components.
Data Source
AI summary
An apparatus includes a remote terminal unit (RTU) having one or more input/output (I/O) modules and a controller module. Each of the one or more I/O modules includes multiple I/O channels. The controller module includes at least one processing device configured to communicate with at least one industrial field device via the I/O channels of the I/O modules. The controller module includes a first connector, and a first of the one or more I/O modules includes a second connector. The first connector is configured to be physically connected to the second connector, and the first and second connectors are configured to transport data and power directly between the controller module and the first I/O module.