Wireless Friction Drive Conveyor Controllers
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Solution Overview
Problem
Friction drive conveyor systems face high installation and maintenance costs due to the need for extensive wiring and unreliable wireless communication between drive motors and central controllers, especially in complex manufacturing environments with obstacles that interfere with signal transmission.
Innovation Solution
Implementing independent and intelligent drive controllers that communicate wirelessly with each other, eliminating the need for direct wired connections to a central controller, and using repeaters to maintain reliable communication across the system, with sensors reading tags on workpiece carriers for routing and manufacturing data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used between drive motors and central controller, then reliable communication is achieved, but installation and modification costs increase significantly
Solution Approach 1:
The patent replaces the mechanical wiring system with a wireless communication system. Drive controllers communicate with the central controller and each other via wireless signals, eliminating the need for physical wire runs, conduits, and drilling through floors. This substitution maintains communication reliability while dramatically reducing installation complexity and cost.
Solution Approach 2:
The patent introduces wireless communication as an intermediary medium between drive controllers and the central controller. Instead of direct wired connections, wireless signals serve as the mediator to transmit control commands and status information, enabling flexible deployment without extensive infrastructure installation.
2Ease of manufacture
If wireless communication is used between drive motors and central controller, then installation costs are reduced, but communication reliability deteriorates in environments with signal-interfering obstacles
Solution Approach 1:
The patent segments the communication network into multiple drive controllers that can communicate with each other wirelessly in addition to the central controller. This creates a distributed communication architecture where each drive controller operates semi-independently, allowing the system to maintain functionality even if some wireless connections are blocked by obstacles.
Solution Approach 2:
The patent implements feedback mechanisms where drive controllers continuously monitor communication status and can adapt their behavior accordingly. If wireless communication is blocked, the system can detect this through feedback signals and switch to alternative communication paths or methods, maintaining operational reliability despite environmental interference.
3Manufacturing precision
If friction drive motors are in constant contact with workpiece carriers, then control precision is improved, but system complexity and maintenance requirements increase
Solution Approach 1:
The patent implements dynamic control where friction drive motors adjust their engagement with workpiece carriers based on real-time conditions. The wireless communication system enables continuous feedback about carrier position and system state, allowing controllers to dynamically optimize motor engagement - maintaining constant control when needed while reducing engagement when carriers are spaced apart, thereby reducing wear and complexity.
Data Source
AI summary
A conveyor system having a conveyor path and friction drive spaced along the path to drive carriers along the path. Each friction drive is controlled by a drive controller, which communicates tracking, routing, and other information directly to other drive controllers within range via a wireless signal. The drive controllers may also directly communicate wirelessly with a central controller. If the central controller or a desired destination drive controller is out of range of a particular drive controller, that drive controller may communicate through other drive controllers until the desired destination drive controller is reached, or a drive controller that is within range of the central controller is reached.