Remote Backup Control for Working Machine Operation Failure
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Solution Overview
Problem
Existing working machines, such as mobile cranes, face operational challenges when their primary operation devices fail, as there is no effective alternative means to control and operate the machine, making restoration difficult.
Innovation Solution
A working machine and operation system that include an operation terminal connected via an external network, allowing the transmission of a false operation signal to control the machine's function units, providing an alternative means of operation when the primary operation device fails, with a control unit capable of switching between intrinsic and false operation signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the primary operation device is used for controlling the working machine, then normal operation is achieved, but the system becomes vulnerable to complete failure when the operation device fails
Solution Approach 1:
The control unit changes its operational parameters by switching between accepting intrinsic operation signals from the primary operation device and accepting false operation signals from the operation terminal. This parameter change enables the system to adapt to different operational states and maintain functionality despite device failures
Solution Approach 2:
The operation terminal acts as an intermediary device that can transmit false operation signals to the control unit when the primary operation device fails. This intermediary provides an alternative control path, ensuring continuous operability and improving system reliability
2Reliability
If an alternative operation terminal is added to provide backup control, then operational continuity is improved, but device complexity increases
Solution Approach 1:
The control unit is designed with multi-functionality to accept and process both intrinsic operation signals from the primary operation device and false operation signals from the operation terminal. This universal design allows a single control unit to handle multiple operation modes without requiring separate control systems, thereby improving reliability while minimizing the increase in device complexity
Data Source
Figure 1
AI summary
There is provided a working machine that includes an operated function unit, an in-vehicle network to be connected to an operation terminal via an external network, an operation unit that transmits an intrinsic operation signal related to operation of the operated function unit to the in-vehicle network, and a control unit that is connected to the operation unit via the in-vehicle network and controls the operated function unit on the basis of either a false operation signal generated by the operation terminal or the intrinsic operation signal.