Hardware Meter Unit Bus Interface Reduces Processor Load
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Solution Overview
Problem
Existing metering systems in automated control processes are hindered by processor system load, latency, and installation complexity due to dependence on processor systems for data routing and spatial distribution of meter modules.
Innovation Solution
A hardware-based meter unit with a bus interface module that allows direct coupling to a bus system, enabling independent metering functions, reducing processor system load and complexity through direct data routing and flexible connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If meter modules are integrated in a processor system or directly connected to it, then the metering function can be provided within the control device, but the processor system is loaded with additional software execution and data routing tasks
Solution Approach 1:
The control device is segmented into distinct functional units: the processor system for control tasks and the separate meter unit for metering tasks. This segmentation allows each unit to specialize in its specific function, reducing the processor system's load while maintaining integration benefits through bus coupling.
2Adaptability or versatility
If meter modules are implemented as software function modules in the processor system, then they can be easily integrated, but software-related delays adversely affect latency and jitter performance
Solution Approach 1:
The software-based metering implementation is replaced with a hardware-based meter unit. This substitution eliminates software-related delays and processing overhead, achieving deterministic real-time performance with reduced latency and jitter while maintaining the metering function within the control device.
3Speed
If meter modules are arranged remote from the control device to receive signals directly from sensors, then spatial distribution is enabled, but many separate connection lines increase installation and maintenance complexity
Solution Approach 1:
The bus system serves as an intermediary between the control device and the meter unit, enabling data exchange without requiring direct physical connection lines. This intermediary approach allows the meter unit to be positioned flexibly while using the existing bus infrastructure for communication, reducing installation complexity.
4Productivity
If input data are routed via the processor system to meter modules, then data processing can be performed, but the processor system capacity is consumed and data throughput is limited
Solution Approach 1:
The metering function is extracted from the processor system and implemented as a separate hardware meter unit. This extraction removes the data routing and metering tasks from the processor system, freeing up its capacity for control functions while enabling high-throughput data processing at the meter unit level directly from the bus system.
Data Source
AI summary
A meter unit having at least one meter module and a bus interface module, wherein the meter unit is in the form of hardware and the bus interface module can be used to couple the meter unit to a bus system, as a result of which input data for the meter module can be received from a bus system and result data from the meter module can be output onto the bus system. In addition, a control system having such a meter unit is provided, also comprising a control device and a bus system, wherein the meter unit and the control device are connected to the bus system.