AGV Signal-Based Safety Range Control for Collision Prevention
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Solution Overview
Problem
Automated guided vehicles (AGVs) often collide with workers or devices during operation, leading to casualties or damage, as existing systems fail to effectively prevent such collisions.
Innovation Solution
Equipping AGVs with a first receiver to detect a signal of a specific frequency from transmitters on movable or fixed objects, allowing the controller to control the vehicle's operation, including stopping or decelerating, based on signal reception, and using a second receiver for additional safety distance detection to ensure safe operation ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the AGV operates at normal speed without collision detection, then productivity is improved, but the risk of colliding with workers or devices increases
Solution Approach 1:
The patent applies preliminary action by detecting the presence of workers or devices in advance using signal transmitters and receivers before the AGV reaches them. The controller receives signals from transmitters worn by workers or placed on devices, determines their positions, and proactively adjusts the AGV's speed or trajectory to prevent collisions, allowing the AGV to operate at higher speeds safely.
Solution Approach 2:
The patent implements feedback by continuously monitoring the environment through signal transmitters and receivers, providing real-time information about workers and devices. The controller uses this feedback to dynamically adjust the AGV's operation, creating a closed-loop safety system that enables faster speeds while maintaining collision prevention.
2Reliability
If the AGV uses multiple receivers and transmitters for enhanced safety detection, then collision prevention capability is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a multi-functional signal transmission system where transmitters can be worn by workers or placed on various types of devices (fixed or movable). The same receiver and controller infrastructure handles detection for both workers and devices, eliminating the need for separate detection systems and reducing overall complexity while maintaining high reliability.
Data Source
Figure 1
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AI summary
Disclosed is an automated guided vehicle (101), which relates to the technical field of smart devices. The automated guided vehicle (101) comprises : a first receiver (1011) configured to receive a first signal of a first frequency that is sent by a first transmitter (1021) worn on a movable object or a fixed object; and a controller (1013) configured to control the running of the automated guided vehicle (101) depending on whether the first receiver (1011) receives the first signal. The automated guided vehicle (101) can determine, depending on whether the first receiver (1011) receives a signal, whether the automated guided vehicle (101) is within a safe running range with respect to an object (102) to be protected, so as to control the running of the automated guided vehicle (101), thereby preventing the automated guided vehicle (101) from colliding with an object (102) to be protected, such as a person or a device, during running. Further disclosed are a method and system for controlling an automated guided vehicle (101).