Optical Wireless Communication Line Optimization for Component Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In communication systems for automatic machines like electronic component mounting devices, the transmission of both processed data and raw image data through a single communication line leads to inefficiencies, as the large amount of raw image data during abnormalities increases bandwidth requirements, reducing transmission efficiency and potentially increasing manufacturing costs.
Innovation Solution
Implementing a dual communication system where processed data is transmitted via optical wireless communication and raw image data is transmitted via near field communication, such as TransferJET, when abnormalities occur, allowing for optimized data transmission speed according to data volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single communication line is used to transmit both processing result data and actual image data, then device complexity is reduced, but transmission efficiency deteriorates due to bandwidth requirements for large data volumes during abnormalities
Solution Approach 1:
The patent divides the communication system into two separate communication lines: a first communication line for transmitting processing result data and a second communication line for transmitting actual image data. This segmentation allows each communication line to be optimized for its specific data type, preventing large image data from bottlenecking the transmission of smaller processing results, thereby resolving the contradiction between device simplicity and transmission efficiency.
2Reliability
If the bandwidth of the communication line is increased to handle large amounts of data during abnormalities, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
By segmenting the communication lines into two separate channels, the system can use a lower-bandwidth, lower-cost first communication line for processing result data and a higher-bandwidth second communication line only when needed for actual image data transmission. This eliminates the need to provision high bandwidth capacity on the primary communication line for all scenarios, reducing manufacturing costs while maintaining reliability during abnormal conditions.
Solution Approach 2:
The system dynamically switches between using only the first communication line during normal operation and activating both communication lines during abnormalities. This dynamic adaptation allows the system to maintain high reliability when needed while avoiding the permanent cost overhead of provisioning high-bandwidth capacity on the first communication line for scenarios that only occur during abnormal conditions.
3Reliability
If a small amount of processing result data is transmitted through a high-speed communication line, then transmission efficiency is reduced, but reliability is improved
Solution Approach 1:
The patent creates a dedicated first communication line for processing result data that can be optimized for low-latency, high-reliability transmission of small data packets, while a separate second communication line handles large-volume actual image data. This segmentation allows the first communication line to achieve high transmission efficiency for its intended purpose without being constrained by the bandwidth requirements of the second line.
Solution Approach 2:
Each communication line is optimized with different quality characteristics matched to its specific usage: the first communication line is optimized for reliable, low-latency transmission of small processing result data, while the second communication line is optimized for handling large volumes of actual image data. This local optimization resolves the contradiction by allowing each line to excel at its specific function rather than compromising both for a middle-ground configuration.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is provided a communication system in which transmission efficiency is improved by the optimization of a communication line according to the amount of data to be transmitted and manufacturing costs are consequently reduced, and an electronic component mounting device using the communication system. An electronic component mounting device 10 includes, on a mounting head 28, a part camera 96 that images an electronic component sucked by a suction nozzle and a mark camera 98 that images a reference position mark of a circuit board. Each of the cameras 96 and 98 transmits the processing result data of image processing to a controller 201 through optical wireless communication that is performed through an optical wireless device 221 and the like. When it is determined that actual image is necessary on the basis of the received processing result data, the controller 201 performs control for transmitting actual image data to each of the cameras 96 and 98. Each of the cameras 96 and 98 transmits the actual image data to the controller 201 through near field communication that is performed through communication sections 217 and 237 and the like.