Wireless Teaching Pendant Dynamic Signal Interval Control
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Solution Overview
Problem
Existing automatic machine systems with wireless teaching pendants face safety issues due to unstable wireless communication, leading to potential delays and increased operation distances during emergency stops, especially when the communication instability is caused by obstacles or interference, and the frequency of emergency stops is higher with shorter LIVE signal repetition periods.
Innovation Solution
A wireless teaching pendant and control apparatus system that adjusts the transmission and reception intervals of periodic data, such as LIVE signals and emergency stop signals, based on the operation speed and mode of the robot or machine tool, ensuring timely and safe operation by shortening intervals during high-speed operations and lengthening them during low-speed operations to balance safety and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmission interval of LIVE signals is shortened to improve safety response time, then emergency stop response speed is improved, but the frequency of unnecessary emergency stops due to communication instability increases
Solution Approach 1:
The patent applies dynamics by making the transmission interval of LIVE signals variable rather than fixed. The control apparatus dynamically adjusts the transmission interval based on the current operation speed of the robot - using shorter intervals during high-speed operations for rapid emergency response, and longer intervals during low-speed operations to reduce unnecessary stops due to communication instability.
Solution Approach 2:
The patent changes the parameter of transmission interval based on operation conditions. By monitoring the robot's operation speed and adjusting the LIVE signal transmission interval accordingly, the system optimizes both safety response time and operation continuity - shorter intervals when speed is high, longer intervals when speed is low.
2Productivity
If the transmission interval of LIVE signals is lengthened to reduce unnecessary emergency stops, then operation continuity is improved, but emergency stop response time increases
Solution Approach 1:
The system dynamically adjusts the LIVE signal transmission interval based on real-time operation speed. During low-speed operations, longer intervals are used to maintain operation continuity and reduce unnecessary stops. During high-speed operations, the interval is automatically shortened to ensure rapid emergency stop response.
Solution Approach 2:
The transmission interval parameter is changed according to operation speed conditions. The control apparatus monitors operation speed and adjusts the interval parameter - extending it during low-speed phases to improve continuity, and contracting it during high-speed phases to ensure safety response time.
3Reliability
If the transmission interval is fixed at a short period, then safety is improved during high-speed operations, but the system becomes less adaptable to varying operation conditions
Solution Approach 1:
The patent makes the transmission interval dynamic rather than fixed, allowing the system to adapt to varying operation conditions. The control apparatus continuously monitors operation speed and adjusts the LIVE signal transmission interval accordingly, providing both safety during high-speed operations and reduced unnecessary stops during low-speed operations.
Solution Approach 2:
The system changes the transmission interval parameter based on operation speed variations. This parameter adaptation allows the system to maintain short intervals for safety during high-speed operations while automatically extending intervals during low-speed operations to improve overall adaptability and reduce unnecessary emergency stops.
Data Source
AI summary
A wireless teaching pendant for operating a control apparatus of a robot or a machine tool by wireless communication includes a wireless communication unit for performing wireless communication with the control apparatus and a transmission interval change unit for changing a transmission interval of periodic data transmitted by the wireless communication unit to the control apparatus.