Moving Body Sensor Range Switching Near Line Members
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Solution Overview
Problem
In working systems where a moving body supplies necessary members to multiple modules along a line, the presence of a line constituent member on its path can cause delays due to sensor detection, as enlarging the detection range to ensure safety results in the moving body being unable to proceed.
Innovation Solution
The system includes a moving body with a sensor and a control section that can switch between detection ranges, using a light projecting section and receiving section to differentiate between the line constituent member and interfering objects, allowing the moving body to approach the line constituent member while preventing collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detection range of the sensor is enlarged to ensure safety, then the ability to detect interfering objects is improved, but the moving body cannot proceed when a line constituent member enters the detection range causing replenishment work to be delayed
Solution Approach 1:
The detection space is segmented into two distinct ranges: a first detection range with a larger detection angle for monitoring areas adjacent to the moving body, and a second detection range with a smaller detection angle for monitoring the moving path. This segmentation allows the sensor to focus detection resources appropriately for each zone, enabling the moving body to proceed when only line constituent members are present in the first range while maintaining safety monitoring in both ranges.
Solution Approach 2:
The detection range is made dynamic and adjustable based on operational context. The control unit switches between the first detection range (larger angle) and second detection range (smaller angle) depending on whether the moving body is approaching a line constituent member or operating normally. This dynamic adjustment optimizes both safety monitoring and operational efficiency in different situations.
2Productivity
If the detection range is reduced to allow the moving body to proceed, then the productivity is improved, but the safety monitoring capability is reduced
Solution Approach 1:
Safety monitoring is segmented between two detection ranges: the first range (larger angle) monitors areas adjacent to the moving body where line constituent members are expected, while the second range (smaller angle) monitors the moving path. This segmentation maintains comprehensive safety monitoring while allowing the moving body to proceed when the path is clear.
Solution Approach 2:
The detection range dynamically adapts to operational needs. When the moving body approaches a line constituent member, the system switches to the first detection range for broader monitoring. When moving normally, it uses the second detection range for focused path monitoring, ensuring safety is maintained across all operational phases.
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
This configuration enables the moving body to continue replenishment operations and detect interfering objects effectively, even when a line constituent member is on its path, ensuring safe and uninterrupted operation.
Implementation Method 1
a light projecting section configured to project light toward the moving body along the moving path of the moving body
Implementation Method 2
a light receiving section configured to receive light from the light projecting section
Data Source
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AI summary
The working system includes multiple modules constituting a work line, a moving body that moves along the work line in which the multiple modules are arranged to supply necessary members to each module, and a line constituent member constituting a part of the work line. The line constituent member can be installed on the moving path of the moving body and has a light projecting section that projects light toward the moving body along the moving path of the moving body. The moving body has a sensor configured to detect the presence of an interfering object; a light receiving section configured to receive light from the light projecting section, and a control section configured to monitor for the presence of the interfering object within a detection range of the sensor and, in a case of the line constituent member being installed on the moving path of the moving body, the control section stops the movement of the moving body when the interfering object is detected while monitoring for the presence of the interfering object on the moving path to the line constituent member based on a state of light received from the light receiving section. The control section of the moving body can switch the detection range of the sensor between a first detection range and a second detection range smaller than the first detection range.