Remote Control Wearable for Order Picking Trucks
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Solution Overview
Problem
Operators of low-level order picking trucks face inefficiencies in stock picking operations due to the need to frequently relocate the vehicle, which interrupts the picking process and reduces time available for actual stock selection.
Innovation Solution
A remote control device worn by the operator allows wireless control of materials handling vehicles, enabling the vehicle to move autonomously based on signals from the operator, with sensors detecting objects and people to prevent collisions and ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operator manually relocates the vehicle between picking locations, then the vehicle can be positioned at different stock locations, but the picking process is interrupted and time is lost during relocation
Solution Approach 1:
The control functions are extracted from the vehicle and placed on a wearable remote control device worn by the operator. This allows the operator to control vehicle movement remotely while focusing on picking activities, eliminating the need to manually relocate the vehicle and interrupt the picking process
Solution Approach 2:
The vehicle is equipped with sensors that automatically detect objects and people in its path, and the control system automatically prevents movement when safety conditions are not met. This self-monitoring and self-protection capability eliminates the need for manual safety checks during remote operation
2Productivity
If the operator focuses on stock picking activities, then picking productivity increases, but the operator cannot simultaneously control vehicle movement
Solution Approach 1:
The mechanical control system is replaced with a wireless remote control system. The operator wears a remote control device that transmits control signals wirelessly to the vehicle, eliminating the need for physical contact with vehicle controls and allowing simultaneous focus on picking activities
3Speed
If the vehicle moves autonomously without safety detection, then response time to movement requests decreases, but collision risk with objects and people increases
Solution Approach 1:
Sensors continuously monitor the environment ahead of the vehicle before movement is initiated. The system performs preliminary safety checks by detecting objects and people in the vehicle's path, and only allows movement when the path is clear, preventing collisions before they can occur
Solution Approach 2:
The control system receives continuous feedback from sensors that detect objects and people in the vehicle's path. This feedback loop allows the system to automatically adjust or prevent movement based on real-time safety conditions, maintaining both speed and safety
Data Source
AI summary
A materials handling vehicle includes an operator platform from which an operator can drive the vehicle; a traction control system for advancing the vehicle across a floor surface; at least one sensor configured to detect the presence of an object located at a position proximate to the vehicle; and a controller communicably coupled to the at least one sensor and the traction control system. The controller is responsive to the output of the at least one sensor to stop or slow down the vehicle if an object is detected proximate to the vehicle and the vehicle is traveling in response to a remote travel request. However, the controller does not slow down or stop the vehicle if an object is proximate to the vehicle while the operator is driving the vehicle on the operator platform.