Materials Handling Vehicle Zone Control for Dynamic Restriction Policies
Solution Overview
Problem
Current vehicle systems in covered environments, such as warehouses, lack the ability to dynamically detect and avoid objects while maintaining operational efficiency, particularly in restriction zones where vehicles must comply with specific policies.
Innovation Solution
A materials handling vehicle equipped with sensors and transceivers, coupled with a computing device, determines its location and orientation to adjust operations in compliance with dynamically defined zone policies, including speed, height, and deceleration policies, using technologies like LiDAR, UWB, and RADAR to navigate restriction zones effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static zones are used to require vehicle speed reduction, then safety in restriction zones is improved, but operational efficiency deteriorates due to unnecessary speed reductions
Solution Approach 1:
The patent transitions from static restriction zones to dynamic zones that adjust boundaries and policies in real-time based on detected objects and environmental conditions. The system continuously monitors the environment using sensors (LiDAR, cameras, RFID) and dynamically modifies zone parameters, allowing vehicles to maintain higher speeds when zones are clear while still enforcing safety when objects are present, thus resolving the contradiction between safety compliance and operational efficiency
Solution Approach 2:
The system implements continuous feedback loops where sensors detect objects and conditions within restriction zones, this information is processed by the control system, and policies are adjusted accordingly. The feedback mechanism allows the system to learn from environmental conditions and optimize zone enforcement, maintaining safety when needed while minimizing unnecessary operational disruptions, thereby balancing safety compliance with operational efficiency
2Difficulty of detecting and measuring
If comprehensive sensor detection is implemented to detect all objects, then detection capability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple detection technologies (LiDAR, cameras, RFID sensors, ultrasonic sensors) into an integrated sensor system that operates cooperatively. By merging these detection methods, the system achieves comprehensive object detection while sharing processing loads and utilizing complementary strengths of each sensor type, thus improving detection capability without proportionally increasing overall system complexity
Solution Approach 2:
The control system is designed to handle multiple sensor types and detection modalities through a unified processing architecture. The system can detect various object types (pedestrians, vehicles, obstacles) using the same integrated platform, reducing the need for separate specialized systems and thereby improving detection capability while managing device complexity through multi-functional design
3Adaptability or versatility
If dynamic zone policies are implemented with real-time adjustments, then adaptability is improved, but computational requirements increase
Solution Approach 1:
The system pre-calculates potential zone adjustments and prepares policy options based on predicted vehicle trajectories and common scenarios. By performing preliminary computations for anticipated situations, the system reduces the computational burden during real-time operation, allowing dynamic policy adaptation while minimizing energy consumption during critical decision-making moments
Solution Approach 2:
The system implements dynamic adjustments selectively based on the situation, applying full computational resources only when necessary (e.g., when objects are detected or conditions change). During normal operation with clear zones, the system uses reduced computational effort, thus achieving adaptability when needed while managing computational energy consumption through partial action strategies
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 the vehicle's ability to navigate restriction zones by dynamically adjusting operations based on real-time environmental data, improving safety and operational efficiency by ensuring compliance with predefined policies.
Implementation Method 1
the vehicle transceiver includes an ultra wide band (UWB) transceiver that communicates with a plurality of UWB transceiver anchors that are fixed to stationary objects in the covered environment for detecting the location of the materials handling vehicle in the covered environment
Implementation Method 2
the vehicle sensor includes at least one of the following: a light detection and ranging (LiDAR) sensor, a wheel speed sensor, a weight sensor, a steer angle sensor, an odometer, a wireline sensor, a gyroscope, an accelerometer, an onboard inertial measurement unit (IMU)
Implementation Method 3
the vehicle sensor includes at least one of the following: a light detection and ranging (LiDAR) sensor
Implementation Method 4
a RADAR system
Data Source
AI summary
Embodiments provided include a method that includes creating a first restriction zone for a covered environment, where the first restriction zone defines an area within which a vehicle must comply with a first policy, defining the first policy, and defining a second policy for the first restriction zone. Some embodiments include determining a location and an orientation of the vehicle, determining from the location and the orientation, that the vehicle is approaching the first restriction zone, and in response to determining that the vehicle is approaching the first restriction zone, determining whether the first policy applies to the vehicle and, in response to determining that the first policy applies to the vehicle, sending the vehicle the first policy, which causes the vehicle to adjust current operation to comply with the first policy when the vehicle enters the first restriction zone.