Robotic Work Cell Proximity Detection for Automatic Motion Halt
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Solution Overview
Problem
Modern inventory systems face challenges in efficiently coordinating tasks between various components, leading to inefficient resource utilization, long response times, and poor system performance due to the need for manual intervention and knowledge of complex shutdown procedures for robotic devices.
Innovation Solution
A system where user devices transmit signals to control the motion of mobile drive units and robotic devices autonomously, simplifying the process of starting and stopping these devices without manual interaction, thereby enhancing user experience and reducing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual intervention is used to control robotic devices, then device complexity can be reduced, but system productivity and response time deteriorate
Solution Approach 1:
The robotic device autonomously detects the user's presence via proximity sensors and automatically adjusts its operational state without requiring manual commands. The system serves itself by making control decisions based on detected proximity, eliminating the need for complex manual control interfaces while maintaining high productivity.
Solution Approach 2:
The system continuously monitors proximity sensor data and uses this feedback to dynamically adjust the robotic device's operational state. This closed-loop control enables automatic response to user presence, improving productivity without requiring complex pre-programmed control sequences.
2Reliability
If complex shutdown procedures are implemented, then device safety can be improved, but ease of operation deteriorates
Solution Approach 1:
The robotic device automatically initiates shutdown procedures when user proximity is detected, eliminating the need for users to manually execute complex shutdown sequences. The system handles safety-critical shutdown actions autonomously, maintaining reliability while simplifying user interaction to mere presence detection.
Solution Approach 2:
The system performs safety checks and preparatory actions automatically upon detecting user proximity, before the user would need to initiate any manual shutdown procedure. This preliminary automated action ensures safety protocols are followed without requiring user knowledge of complex shutdown sequences.
3Ease of operation
If automated proximity-based control is implemented, then ease of operation improves, but device complexity increases
Solution Approach 1:
The system replaces complex mechanical control interfaces with optical/electromagnetic proximity sensing. Instead of requiring users to interact with physical controls or complex software interfaces, the system uses non-contact sensor-based detection to automatically determine operational state, simplifying user interaction while managing technical complexity through sensor integration.
Data Source
AI summary
Techniques for controlling motion of physical, moving devices within a robotic work cell of an inventory system are disclosed. A user device (e.g., a wearable device) can be used within the workspace to transmit wireless signals. One of these signals can be received by one or more receiving devices associated with the robotic work cell. A proximity monitoring engine can transmit notification data to a machine controller while the signal is being received. Transmitting the notification data may cause the machine controller to execute instructions to halt motion of the robotic device (and/or other moving devices associated with the robotic work cell). The devices of the robotic work cell may remain in a halted state while the signal continues to be received. When the signal is no longer being received, the devices of the robotic work cell may be instructed to resume motion.