Remote Control Feedback for Construction Machine Mismatch Detection
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Solution Overview
Problem
Existing remote operation systems for construction machines face delays in detecting operational discrepancies between the master and slave devices, leading to potential interference with surrounding objects due to communication interruptions or motor breakdowns, as they rely on actuation direction signal comparisons that only detect abnormalities after the actuator starts moving.
Innovation Solution
A remote operation system with a master and slave device configuration, including sensors and communication units that detect and compare operation amounts in real-time, triggering stop control and alarm mechanisms to automatically halt the construction machine if discrepancies are detected, ensuring prompt intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If actuation direction signal comparison is used to detect abnormalities, then the system can identify operational discrepancies, but the detection is delayed until the actuator actually starts moving
Solution Approach 1:
The patent compares operation direction signals from the master device with actuation direction signals from the slave device before the actuator actually moves. This preliminary comparison allows the system to detect abnormalities in the signal transmission or processing chain before physical movement occurs, thereby reducing detection response time while maintaining reliability
Solution Approach 2:
The system establishes a feedback loop where the slave device transmits actuation direction signals back to the master device for real-time comparison with operation direction signals. This feedback mechanism enables continuous monitoring and immediate detection of any discrepancies between intended and actual actuation commands
2Ease of operation
If communication path is used to transmit operation amounts, then remote operation is enabled, but communication interruption or noise may cause operational discrepancies
Solution Approach 1:
The slave device transmits actuation direction signals back through the communication path to the master device, creating a feedback loop that enables real-time verification of communication integrity. Any interruption or noise in the communication path can be detected by comparing the transmitted operation direction signals with the received actuation direction signals
Solution Approach 2:
The system performs preliminary comparison of operation and actuation direction signals to detect potential communication issues before they result in actual operational discrepancies. This allows the system to take preventive measures or alert the operator before unsafe conditions develop
3Extent of automation
If motor is used to give operating power to the operation lever, then automated operation is achieved, but the motor may break down causing operational failure
Solution Approach 1:
The slave device transmits actuation direction signals that reflect the actual state and operation of the motor and operation lever. By comparing these signals with the master device's operation commands, the system can detect motor breakdowns or failures in the automated operation chain, enabling timely intervention
Data Source
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AI summary
On detection of a difference between the operation amount detected by a first sensor and the operation amount received by a first communication unit from a slave, a master side controller executes at least one of stop control to automatically stop a construction machine and alarm control to cause a warning device to issue an alarm. On detection of a difference between the operation amount detected by a second sensor and the operation amount received by a communication unit from the master, a slave side controller executes at least one of the stop control to automatically stop the construction machine and the alarm control to cause the warning device to issue the alarm.