Analog I/O Module Integrating HART Data Separation
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Solution Overview
Problem
Current PLC systems require separate products for HART communication, increasing costs and complexity due to the need for both a transmitter interface and a communication module to handle analog signals and HART data, which is not efficient.
Innovation Solution
An integrated analog I/O module that separates and processes HART data within the PLC system, eliminating the need for a separate transmitter interface by incorporating signal processing units to convert analog signals to digital data and manage HART communication directly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate transmitter interface and communication module are used for HART communication, then HART communication function is achieved, but device complexity and installation cost increase
Solution Approach 1:
The patent combines the transmitter interface and communication module into a single integrated analog input module. The module includes an analog signal processing unit that handles both analog signal conversion and HART data separation, and a digital signal processing unit that processes HART communication data. This integration eliminates the need for separate transmitter interface and communication module, reducing device complexity while maintaining HART communication functionality.
Solution Approach 2:
The analog input module is designed to perform multiple functions: analog signal to digital conversion, HART data separation, and HART communication processing. By making the module universal and multi-functional, it replaces multiple specialized components, thereby reducing overall system complexity and installation cost while preserving adaptability for HART communication.
2Adaptability or versatility
If separate transmitter interface and communication module are used, then HART communication is supported, but installation cost increases
Solution Approach 1:
By merging the transmitter interface and communication module into one integrated analog input module, the patent reduces the number of components that need to be manufactured, installed, and maintained. This consolidation directly lowers installation cost while preserving full HART communication support through the module's integrated signal processing and communication capabilities.
3Adaptability or versatility
If transmitter interface separates HART data from analog signal, then HART data processing is enabled, but device complexity increases
Solution Approach 1:
The analog input module is segmented into distinct functional units: an analog signal processing unit for separating HART data from analog signals, and a digital signal processing unit for processing HART communication data. This segmentation allows complex HART data processing to be distributed across specialized sub-units, reducing the complexity burden on any single component while maintaining overall processing capability.
Data Source
AI summary
Provided is an analog input and output module, the module comprising a first signal processing unit configured to separate analog signal inputted from a plurality of HART transmitters from first HART data, convert the analog signal to digital data, transmit the first HART data to a second signal processing unit, and transmit second HART data received from the second signal processing unit to at least one of the plurality of HART transmitters; and the second signal processing unit configured to control the first signal processing unit and storing conversion result.