Wireless Sensor Data Loss Detection and Iterative Complementing
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Solution Overview
Problem
Existing robot systems face challenges in acquiring complete acceleration information due to partial losses during wireless transmission, leading to inefficiencies in vibration reduction and learning control.
Innovation Solution
A machine system with a sensor attached to a movable part that detects and wirelessly transmits information, includes a loss detection unit to identify partial losses, an iterative operation command unit to repeat the operation, and a complementing information unit to end the repetition when all lost parts are contained in re-detected information, ensuring complete data acquisition in fewer repetitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless transmission is used to transmit acceleration information from the robot, then the complexity of wiring is reduced and ease of operation is improved, but information loss occurs during transmission leading to incomplete data for vibration reduction control
Solution Approach 1:
The system performs preliminary detection of information loss during the first operation, then proactively repeats the operation to acquire missing information before final control decisions are made. This preliminary detection and repetition mechanism ensures complete information is gathered without compromising the ease of wireless operation.
Solution Approach 2:
The loss detection unit continuously monitors transmitted acceleration information and provides feedback about missing data to the control device. This feedback triggers automatic repetition of operations and complementation of lost information, resolving the contradiction by maintaining wireless operation simplicity while ensuring data completeness through closed-loop monitoring.
2Reliability
If the machine repeats the predetermined operation multiple times to acquire complete information, then information completeness is improved, but the time required for operation increases
Solution Approach 1:
Instead of repeating all operations a fixed number of times, the system performs partial repetitions only for specific operations where information loss was detected. The complementing information determination unit identifies exactly which operations need repetition, avoiding unnecessary time consumption while ensuring complete information acquisition.
Solution Approach 2:
The system dynamically changes the repetition parameter based on detected information loss. Rather than using a static repetition count, the control device adjusts the number and type of repetitions based on the specific patterns of lost information, optimizing the balance between information completeness and time efficiency.
3Measurement precision
If all lost information is complemented before control is executed, then measurement precision is improved, but the time delay for control execution increases
Solution Approach 1:
The system uses the acceleration information that is already available from the first operation to initiate vibration reduction control, while simultaneously complementing lost information in the background. The control device self-services by executing control with available data rather than waiting for complete information, thus maintaining measurement precision while reducing time delay.
Solution Approach 2:
The control execution process continues uninterrupted while information complementation occurs. Rather than pausing control execution to wait for all lost information to be recovered, the system maintains continuous useful action by executing control with currently available information and progressively improving it through background complementation operations.
Data Source
AI summary
Provided is a machine system including a machine including a movable part; a control device; a sensor detecting information about the movable part during a predetermined operation of the machine; a transmitting unit wirelessly transmitting the detected information during the predetermined operation; a receiving unit receiving the wirelessly transmitted information; a storage unit storing the received information; a detection unit detecting a loss in the received information; a command unit causing the machine to repeat the predetermined operation, in a case where a loss in the information is detected; a determination unit determining whether or not every lost part of the information detected first is contained in the information detected during the repeated operation; and an complementing unit ending the repeated operation in a case where every lost part is determined to be contained and complementing the information detected first with the information detected during the repeated operation.