Workpiece Working Control Using Radar-Based Speed and Distance Sensing
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Solution Overview
Problem
Existing workpiece working apparatuses struggle to balance safety and efficiency in their operational restrictions, particularly in the presence of moving objects.
Innovation Solution
A control device that sets the operation mode of a working section based on distance and speed information from a radio wave sensor, adjusting the operation speed to prevent contact with moving objects, including modes such as normal, small-slow, medium-slow, and stop modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operational restriction is strengthened to improve safety, then safety is improved, but efficiency deteriorates
Solution Approach 1:
The operational restriction level is dynamically adjusted based on real-time detection of moving objects. The control device switches between multiple operation modes (first mode with higher restriction, second mode with lower restriction) depending on whether a moving object is detected, allowing the system to adapt its safety measures to actual conditions rather than maintaining fixed restrictions
Solution Approach 2:
The control device changes operational parameters (operation mode) based on detection results. When a moving object is detected, the system transitions to a more restrictive mode; when no moving object is present, it returns to a less restrictive mode, thereby optimizing the balance between safety and efficiency through parameter adjustment
2Productivity
If operational restriction is weakened to improve efficiency, then efficiency is improved, but safety deteriorates
Solution Approach 1:
The system dynamically adjusts its operational restriction level based on real-time conditions. When no moving objects are detected in the vicinity, the control device allows operation in a less restrictive mode (second operation mode), thereby improving efficiency while maintaining safety through continuous monitoring and adaptive control
3Productivity
If operation speed is increased to improve efficiency, then efficiency is improved, but safety deteriorates
Solution Approach 1:
The operation speed is dynamically adjusted based on the presence of moving objects. When a moving object is detected, the control device reduces the operation speed to a lower level (first operation mode) to ensure safety. When no moving object is present, the operation speed can be increased (second operation mode) to improve efficiency, creating a dynamic speed control system that adapts to real-time conditions
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
Enables more appropriate control that balances safety and efficiency by adjusting operation speed based on the proximity and speed of moving objects, preventing contact and optimizing performance.
Implementation Method 1
distance information between a moving object (for example, operator) that is present outside the workpiece working apparatus and the working section and speed information of the moving object which moves toward the working section, which are acquired from the radio wave sensor
Data Source
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Figure 3
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AI summary
A control device is used in a workpiece working apparatus that has operation modes including a first mode in which a working section configured to execute a predetermined work on a workpiece is operated in a first operation, a second mode in which the working section is operated in a second operation slower than the operation in the first mode, and a stop mode in which the operation of the working section is stopped. The control device includes a control section configured to acquire, from a radio wave sensor, distance information between a moving object, being provided outside the workpiece working apparatus, and the working section, and acquire speed information of the moving object, moving toward the working section, which enables to set an executing mode of the working section from the operation modes based on the distance information and the speed information so acquired.