Dual Ranging Sensor Tracking for Mobile Machine Safety
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Solution Overview
Problem
Existing distance-measuring systems for mobile machines require complex adjustment processing when initialized or when the machines move, which can be time-consuming and inefficient.
Innovation Solution
A distance-measuring system comprising a first ranging sensor with a wide detection range and a second ranging sensor with a limited but high-resolution detection range, along with an image processing device that automatically adjusts the detection position and controls the mobile machine based on sensed data to enhance safety and simplify adjustment processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single ranging sensor with wide detection range is used, then the detection range is sufficient, but the measurement precision is insufficient
Solution Approach 1:
The detection system is divided into two separate ranging sensors: a first ranging sensor with a wide detection range for broad area coverage, and a second ranging sensor with a limited but high-resolution detection range for precise measurement. This segmentation allows each sensor to be optimized for its specific function, resolving the contradiction between coverage area and measurement precision.
2Measurement precision
If adjustment processing is performed manually when the mobile machine moves, then the detection accuracy can be maintained, but the operation complexity and time consumption increase
Solution Approach 1:
The system performs automatic adjustment processing through the image processing device, which dynamically adjusts the detection position of the second ranging sensor based on the detected position of the mobile machine. This self-service mechanism eliminates the need for manual adjustment operations while maintaining detection accuracy, resolving the contradiction between measurement precision and ease of operation.
3Ease of operation
If the detection position is fixed, then the system is simple to operate, but it cannot track the mobile machine when it moves
Solution Approach 1:
The detection position of the second ranging sensor is made dynamic rather than fixed. The image processing device continuously adjusts the detection position based on the real-time position of the mobile machine, enabling the system to adapt and track the moving target while maintaining operational simplicity through automated control.
4Measurement precision
If adjustment processing is performed frequently when the mobile machine moves, then the detection accuracy is maintained, but the productivity decreases
Solution Approach 1:
The system implements a feedback mechanism where the image processing device detects the position of the mobile machine and automatically adjusts the detection position of the second ranging sensor in real-time. This closed-loop feedback control maintains detection accuracy without requiring frequent manual intervention, thereby preserving system productivity and efficiency.
Data Source
AI summary
A distance-measuring system includes: a first ranging sensor; a second ranging sensor that covers a detection range more limited than a detection range covered by the first ranging sensor and has resolution higher than resolution of the first ranging sensor; and an image processing device. The image processing device includes: a machine detector that detects a position of a mobile machine, based on a first sensed result obtained by the first ranging sensor; a sensor controller that controls a detection position to be detected by the second ranging sensor to detect the position of the mobile machine which has been detected; and a safety determiner that controls the mobile machine, based on a second sensed result obtained by the second ranging sensor.