Industrial Machine Data Buffering for Lower Communication Load
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Solution Overview
Problem
High communication load occurs when data from industrial machines is acquired at a predetermined timing, leading to increased load on the communication system.
Innovation Solution
A communication system is implemented with a data collection apparatus, controller, motor control apparatus, and sensor, where state data is copied from an original storage area to a secondary storage area at a desired timing using synchronous communication, allowing for reduced communication load by transmitting data from the secondary storage area at a later time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data is acquired and transmitted immediately at predetermined timing, then data freshness is improved, but communication load increases
Solution Approach 1:
The patent applies preliminary action by copying state data from the original storage area to a transmission storage area in advance at predetermined timing, before actual transmission occurs. This allows the system to prepare data for future transmission without immediately transmitting it, thereby reducing communication load while maintaining data availability. The copy operation is performed proactively at timing when communication load is lower, separating data preparation from data transmission.
Solution Approach 2:
The patent uses copying by creating a duplicate of the state data in the transmission storage area from the original storage area. This copy serves as a buffer that can be transmitted later without affecting the original data or requiring immediate communication resources. The copying mechanism enables decoupling of data acquisition timing from data transmission timing, reducing peak communication load.
2Quantity of substance
If data transmission is delayed to reduce communication load, then communication load is reduced, but data freshness deteriorates
Solution Approach 1:
The patent segments the data handling process into distinct storage areas: an original storage area for real-time state data and a transmission storage area for buffered data ready for transmission. This segmentation allows the system to maintain real-time data acquisition while separating the transmission timing control, enabling delayed transmission without compromising data freshness in the original system.
Solution Approach 2:
The transmission storage area acts as an intermediary buffer between the original storage area and the communication interface. It temporarily holds copied state data, allowing transmission to be scheduled at optimal times when communication load is lower, while the original data remains fresh and accessible in its source location.
3Productivity
If multiple data operations are performed simultaneously, then processing efficiency is improved, but system complexity increases
Solution Approach 1:
The patent divides the storage system into multiple distinct storage areas (original storage area and transmission storage area) with clearly defined roles. This segmentation simplifies the management of concurrent data operations by providing separate spaces for different purposes, reducing the complexity of coordinating simultaneous read/write operations compared to using a single shared storage area.
Data Source
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AI summary
Provided is a communication system (1) including a first industrial machine (20) and a second industrial machine (30), which are configured to communicate with each other. The first industrial machine (20) includes a copy instruction transmission module (202) configured to transmit a copy instruction to the second industrial machine (30). The second industrial machine (30) includes: an update module (301) configured to update data in a first storage area based on its own operation; a copy module (302) configured to copy the data in the first storage area to a second storage area when the copy instruction is received; and a transmission module (303) configured to transmit the data in the second storage area to the first industrial machine (20).