Remote Machine Control System with Communication Threshold Monitoring
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Solution Overview
Problem
Remotely controlled machines often experience communication issues such as signal delays, errors, or loss, leading to inaccurate or delayed commands, which can compromise the machine's operation and safety.
Innovation Solution
A system that includes a remote input device, transmitter, and receiver, with a controller that generates and transmits remote control signals, determines communication parameters, and compares them to a desired threshold to ensure timely and accurate signal reception, stopping the machine if parameters fall outside the threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If remote control signals are transmitted over long distances or through challenging environments, then the machine can be operated remotely in inaccessible locations, but signal delays, errors, or loss occur leading to inaccurate or delayed commands
Solution Approach 1:
The system continuously monitors communication parameters (signal strength, latency, error rates) and uses this feedback to dynamically adjust operation. When parameters fall below thresholds, the system automatically transitions to a safe state, creating a closed-loop control system that ensures reliable operation despite varying transmission conditions
Solution Approach 2:
The system establishes predetermined communication thresholds and safe states in advance. By preparing these protective measures beforehand, the system can quickly respond to degradation without waiting for critical failure, cushioning against potential hazards from poor signal conditions
2Reliability
If the system continuously monitors communication parameters to ensure safety, then operational reliability improves, but system complexity increases
Solution Approach 1:
The machine's control system autonomously monitors its own communication status and makes self-determined decisions about operational state. The system serves itself by automatically detecting parameter degradation and transitioning to safe states without external intervention, reducing the need for complex external monitoring infrastructure
3Measurement precision
If signal transmission intervals are reduced to improve responsiveness, then command accuracy improves, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts signal transmission based on communication parameter quality. When parameters are good, transmission can be less frequent; when parameters degrade, the system increases monitoring frequency. This dynamic adaptation optimizes the balance between command accuracy and energy consumption throughout operation
Data Source
AI summary
A system for remotely controlling a machine includes a remote input device, a transmitter remote from the machine, and a receiver at the machine. A controller is configured to store a desired communications threshold, receive input commands from the remote input device, generate a plurality of remote control input signals based upon the input commands, and transmit the plurality of remote control input signals at a location remote from the machine. The controller is further configured to receive at least some of the plurality of remote control input signals at the machine, determine a communications parameter based upon at least one of the plurality of remote control input signals, compare the communications parameter to the desired communications threshold, and generate a command to stop the machine if the communications parameter is outside the desired communications threshold.