Signal Processing Device Decoupling Acquisition and Forwarding Cycles
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Solution Overview
Problem
Existing signal processing devices struggle to remove wide-frequency noise due to limitations in sampling frequency, particularly when the sampling frequency is synchronized with a long forwarding cycle, leading to an inability to effectively remove high-frequency noise.
Innovation Solution
A signal processing device that acquires signals from sensors with a data acquisition cycle shorter than the forwarding cycle, allowing for the generation of time sequence data that can be processed to remove wide-range frequency noise without delay, and forwarded to a control device in high-precision form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the sampling frequency of the A/D converter is synchronized with a long forwarding cycle, then the forwarding cycle can be extended to several ms, but the sampling frequency becomes low and high-frequency noise cannot be removed
Solution Approach 1:
The patent divides the forwarding cycle into multiple data acquisition cycles. The data acquisition cycle is set shorter than the forwarding cycle, allowing multiple samples to be collected within one forwarding cycle. This segmentation enables the system to maintain a long forwarding cycle for control purposes while using shorter acquisition cycles to capture high-frequency signal components and enable effective noise removal through digital filtering.
2Measurement precision
If the sampling frequency is increased to remove high-frequency noise, then wide-range frequency noise can be removed, but the forwarding cycle becomes short and processing efficiency decreases
Solution Approach 1:
The patent segments the processing into data acquisition phase and forwarding phase. Multiple data acquisition cycles are performed within one forwarding cycle, allowing high-frequency noise removal during acquisition while maintaining efficient periodic forwarding to the control device. This resolves the conflict between sampling rate and processing efficiency.
Solution Approach 2:
The patent implements periodic data acquisition at a high rate within each forwarding cycle, followed by periodic forwarding at a lower rate. This periodic structure allows the system to achieve both high sampling frequency for noise removal and efficient processing through the use of longer forwarding cycles.
Data Source
AI summary
The invention relates to a signal processing device, a signal processing method, an information processing program and a recording medium, which removes wide-range frequency noise. In a signal processing device (10), a cycle of acquiring a signal from a sensor is a data acquisition cycle, which is shorter than a cycle of forwarding time sequence data from which noise is removed to a controller, that is, a forwarding cycle.