Industrial Truck Collision Avoidance with Separation Zone Positioning
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Solution Overview
Problem
Existing collision avoidance systems in goods logistics facilities often lead to unnecessary safety measures due to frequent false alarms, reducing productivity and failing to effectively minimize accident risks in complex and cluttered environments.
Innovation Solution
A system utilizing electromagnetic signal propagation delay measurements between stationary positioning apparatuses and transmitters/receivers on industrial trucks and movable objects to determine object positions and collision risks, with a separation zone feature to prevent false alarms by defining safe zones and contour extension zones based on object and truck positions, speeds, and movement directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If warning signals (acoustic or optical) are continuously activated to improve collision avoidance, then safety awareness is enhanced, but false alarms increase and productivity decreases
Solution Approach 1:
The system dynamically changes the activation state of warning signals based on calculated collision risk parameters. Instead of continuous activation, warnings are triggered only when the probability of collision exceeds a predefined threshold, thereby maintaining safety while reducing false alarms and preserving productivity.
Solution Approach 2:
The system continuously monitors the positions of the industrial truck and movable objects, calculates collision probabilities in real-time, and provides feedback by activating or deactivating warning signals accordingly. This closed-loop control ensures warnings are issued only when necessary, avoiding both safety gaps and unnecessary interruptions.
2Object-affected harmful factors
If acoustic signals are used for collision warning, then warnings can be heard, but ambient noise prevents effective perception
Solution Approach 1:
The system introduces an intermediary evaluation layer that processes sensor data and collision probability calculations before triggering any warning signal. This intermediary layer determines whether a warning is genuinely necessary, filtering out false alarms caused by noise or irrelevant proximity, thereby improving the reliability and effectiveness of warning signals.
Solution Approach 2:
The system dynamically adjusts the type and intensity of warning signals based on environmental parameters and calculated risk levels. In high-noise environments or when collision risk is low, warnings may be suppressed or modified, while in high-risk scenarios, more prominent warnings are activated to ensure effective perception.
3Object-affected harmful factors
If optical signals are used for collision warning, then visual contact provides awareness, but signals are easily overlooked due to other light signals and unclear visibility
Solution Approach 1:
The system applies local quality by directing warning signals specifically toward the operator's field of view based on determined relative positions. Instead of omnidirectional or fixed-position light signals, the system tailors the visibility and intensity of optical warnings to the specific spatial context, ensuring they are noticed when relevant and suppressed when not needed.
Solution Approach 2:
The system continuously monitors the spatial relationship between the industrial truck and movable objects, providing real-time feedback on whether optical warning signals should be activated. This feedback mechanism ensures warnings are only displayed when they will be effectively perceived and are genuinely necessary, reducing visual interference and improving reliability.
4Reliability
If warning signals are activated when the industrial truck is moving away from a person, then safety coverage is maximized, but unnecessary warnings occur and may be ignored
Solution Approach 1:
The system dynamically changes the activation state of warning signals based on the direction of motion and calculated collision probability. When the industrial truck is moving away from a movable object or the collision risk is negligible, warnings are suppressed. This parameter-based control maintains comprehensive safety coverage while preserving signal relevance by eliminating unnecessary warnings.
Solution Approach 2:
The system introduces an intermediary collision probability calculation layer that evaluates whether a warning is truly necessary before activating it. This intermediary layer analyzes motion direction, relative positions, and environmental factors to determine signal relevance, preventing loss of information by ensuring only meaningful warnings are communicated to operators.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances safety by accurately determining collision risks and initiating appropriate safety measures while minimizing unnecessary interventions, thus maintaining operational efficiency in goods logistics facilities.
Implementation Method 1
the system is set up for determining an object position of the movable object within the monitoring zone by means of a propagation delay measurement of a signal between the second transmitter and receiver apparatus and the positioning apparatuses
Data Source
AI summary
A system and a method for collision avoidance within a monitoring zone includes a first transmitter and receiver apparatus disposed on an industrial truck, a second transmitter and receiver apparatus disposed on a movable object, and at least two stationary positioning apparatuses that are set up for transmitting and receiving electromagnetic signals. A position of the movable object within the monitoring zone is determined. It is determined whether a collision risk exists between the industrial truck and the movable object, and safety measures are initiated if such a collision risk exists. The monitoring zone may include at least one separation zone, wherein no collision risk between the industrial truck and the movable object is determined to exist if the object position is located within the separation zone.