Automatic Milking Machine Single-Control Locking for Safe Remote Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Automatic milking machines face safety issues due to potential personal injury risks from remote control operations and difficulties in ensuring that control commands and parameter settings are effectively applied, particularly with dual control interfaces.
Innovation Solution
A control system that locks the milking machine into single-control mode, requiring exclusive operation from a designated remote terminal, with visual and acoustic indicators to inform operators of the current operation mode, ensuring only authorized physical presence can interrupt or control the machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If remote control operation of the milking machine is implemented, then operational flexibility and efficiency are improved, but safety risks increase due to potential personal injury from unauthorized control
Solution Approach 1:
The system applies preliminary anti-action by implementing a lock command mechanism that prevents unauthorized remote control operations before they can cause harm. The control unit locks the milking machine to accept commands only from a designated remote terminal, thereby preemptively blocking potential safety hazards while maintaining operational efficiency.
Solution Approach 2:
The control unit acts as an intermediary between multiple remote terminals and the milking machine. It mediates control access by receiving lock commands from authorized terminals and filtering subsequent control commands accordingly, ensuring that only authenticated remote operations can control the machine while maintaining system efficiency.
2Adaptability or versatility
If dual control interfaces (local and remote) are provided, then operational flexibility is improved, but control reliability deteriorates due to difficulty in ascertaining which interface's commands are executed
Solution Approach 1:
The system implements dynamic control mode switching between single-control and dual-control modes. The control unit can dynamically adjust which interfaces are active based on operational requirements, allowing the system to transition from flexible dual-interface operation to reliable single-interface operation as needed, thereby resolving the contradiction between flexibility and reliability.
Solution Approach 2:
The control unit changes the operational parameter of control interface accessibility by accepting or rejecting lock commands from remote terminals. This parameter change dynamically controls whether remote interfaces can issue commands, allowing the system to switch between modes that prioritize either flexibility or reliability based on current operational context.
3Reliability
If single-control mode locking is implemented, then safety and control reliability are improved, but operational flexibility deteriorates due to restricted access to control functions
Solution Approach 1:
The system performs preliminary action by obtaining authentication from the control source before locking single-control mode. This preliminary verification ensures that only authorized users can restrict access, maintaining safety while preserving flexibility for legitimate operational needs. The lock command itself is a preliminary action that sets up future control restrictions.
Solution Approach 2:
The control unit periodically checks for lock commands from authorized remote terminals and adjusts control accessibility accordingly. This periodic evaluation allows the system to maintain safety through restricted access while periodically reopening control flexibility when authorized users require it, balancing both requirements through time-based reassessment.
Data Source
Figure 1
Figure 2
AI summary
A control unit (120) controls (Ctrl) an automatic milking machine (110) to operate in accordance with control commands and/or parameter settings (CMD). A local user interface (130) is fixedly arranged at the milking machine (110) to receive operator- generated instructions, and in response thereto produce the control commands and/or parameter settings (CMD) to the control unit (120). Alternatively, the control commands and/or parameter settings (CMD) are received via a network (150) and a communication interface (140) from a remote terminal (161, 162, 163). In response to a first operator-generated instruction, the local user interface (130) produces a lock command (CMD[lk]) causing the automatic milking machine (110) to be set in a single-control mode in which it is locked to operate exclusively in response to control commands and/or parameter settings (CMD) from a single control source (130, 161, 162, 163) identified in connection with producing the lock command (CMD[lk]). The single control source is either the local user interface (130) or a particular remote terminal (161, 162, 163). This kind of locking guarantees a predictable operation of the milking machine (110), which is a key safety factor for any personnel located in proximity of the milking machine (110).