Industrial Vehicle State Estimation Using Sound and Acceleration Signals
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Solution Overview
Problem
Conventional industrial vehicle control devices face challenges in accurately estimating the state of industrial vehicles due to the inability to distinguish between signals acquired from sensors, leading to incomplete understanding of the necessary information for estimation.
Innovation Solution
An industrial vehicle control device that acquires and processes multiple signals, including sound and acceleration data, to perform data processing based on time-series data, allowing for accurate state estimation by distinguishing between different signal aspects and clustering feature quantities into categories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple signals are acquired from sensors to improve state estimation accuracy, then the estimation accuracy is improved, but the complexity of processing and distinguishing the signals increases
Solution Approach 1:
The patent segments the acquired signals into distinct categories (first signal from first sensor, second signal from second sensor) and processes each separately through dedicated data processing units before combining results. This segmentation allows systematic handling of multiple signals while maintaining estimation accuracy.
Solution Approach 2:
The patent introduces an intermediary data processing unit that acts as a mediator between signal acquisition and state estimation. This unit distinguishes and processes different signal types (e.g., sound data, acceleration data) before feeding them to the state estimation unit, reducing the complexity burden on the estimation algorithm itself.
2Loss of information
If multiple types of sensor data (sound, acceleration) are processed to improve state estimation, then the comprehensiveness of state understanding is improved, but the data processing requirements increase
Solution Approach 1:
The patent performs preliminary data processing on sound data and acceleration data separately before combining them for state estimation. The data processing unit pre-processes each signal type (extracting features, filtering, etc.) in advance, which reduces the computational burden during real-time state estimation and improves processing efficiency.
3Measurement precision
If signal distinction and categorization are performed to improve estimation accuracy, then the precision of state estimation is improved, but the processing complexity increases
Solution Approach 1:
The patent segments the signal processing task by creating distinct data processing paths for different sensor types. The first data processing unit handles first sensor signals while the second data processing unit handles second sensor signals, making the distinction and processing of each signal type more manageable and less complex.
Data Source
AI summary
An industrial vehicle control device for controlling an industrial vehicle includes: a first signal acquisition unit that acquires a first signal; a second signal acquisition unit that acquires a second signal; a data processing unit that performs data processing based on time-series data of the first signal and the second signal; and a state estimation unit that estimates a state of the industrial vehicle by distinguishing results of the data processing.