Robot Arm Communication Synchronization Under Wireless Disconnection
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Solution Overview
Problem
Robot arm systems face issues with erroneous operations and loss of real-time properties due to disconnection of wireless communication, especially when the robot arm's orientation causes blocking objects or moves out of the communicable region, leading to instability in control signal transmission.
Innovation Solution
A communication apparatus that combines a transmission apparatus, a reception apparatus, and a wireless communication unit, where a synchronization signal is transmitted via a cable to ensure timely operation data transmission, even when wireless communication is disconnected, using a burst synchronization signal superimposed on a power supply cable and operation data transmitted wirelessly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wireless communication is used to transmit operation data, then the number of communication cables is reduced, but disconnection occurs when the robot arm moves out of communicable region or blocking objects intervene
Solution Approach 1:
The communication system is segmented into two independent channels: wireless communication for operation data and cable-based communication for synchronization signals. This segmentation allows each channel to fulfill its specific function optimally while compensating for the weaknesses of the other, resolving the contradiction between reducing cable quantity and maintaining connection stability.
Solution Approach 2:
A synchronization signal transmitted via cable acts as an intermediary reference that enables the receiving apparatus to accurately timestamp and synchronize operation data received through wireless communication. This intermediary mechanism ensures real-time properties are maintained even when wireless communication experiences intermittent disconnections.
2Reliability
If multiple communication cables are used to transmit various signals, then all signals can be transmitted reliably, but the thickness of robot arm increases
Solution Approach 1:
Multiple communication functions are merged into a single cable by transmitting both power and synchronization signals through the same physical medium. This combining approach reduces the number of separate cables needed, thereby reducing robot arm thickness while maintaining reliable signal transmission.
Solution Approach 2:
The cable is designed to serve multiple functions simultaneously: power supply and synchronization signal transmission. This multi-functionality eliminates the need for separate dedicated cables for each function, reducing overall cable quantity and robot arm thickness while preserving transmission reliability.
3Device complexity
If wireless communication is used, then real-time properties may be lost when disconnection occurs, but using cables increases complexity
Solution Approach 1:
The synchronization signal is continuously transmitted via cable in advance, establishing a permanent time reference before operation data transmission. This preliminary action ensures that even if wireless communication disconnects, the receiving apparatus can maintain accurate timing and real-time properties using the pre-established synchronization reference.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces erroneous operations and maintains real-time properties by ensuring continuous operation data transmission, even during wireless communication disconnections, and reduces the need for multiple communication cables, thereby minimizing the thickness and increasing the durability of robot arm links.
Implementation Method 1
the transmission apparatus transmits a synchronization signal to the reception apparatus via the cable
Implementation Method 2
the transmission apparatus transmits the operation data corresponding to an operation of the apparatus in a predetermined period to the reception apparatus using the wireless communication unit
Data Source
AI summary
A communication apparatus includes a transmission apparatus configured to transmit operation data for an apparatus, a reception apparatus configured to receive the operation data, a wireless communication unit via which the transmission apparatus and the reception apparatus wirelessly communicate with each other, and a cable configured to connect the transmission apparatus and the reception apparatus, wherein the transmission apparatus transmits a synchronization signal to the reception apparatus via the cable, the synchronization signal indicating a timing to execute the operation data, and wherein the transmission apparatus transmits the operation data corresponding to an operation of the apparatus in a predetermined period to the reception apparatus using the wireless communication unit.