Scanning Probe Microscope Programmable Logic Peripheral Control
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Solution Overview
Problem
Scanning probe microscopes face limitations in data acquisition speed, processing efficiency, and flexibility due to their reliance on complex bus systems, which lead to inaccuracies in signal processing and difficulties in expanding or modifying the system with new peripheral devices.
Innovation Solution
Implementing a programmable logic system without a multi-drop bus, where peripheral devices are directly connected to a central programmable logic unit, enabling parallel control and high data rates, and allowing for reconfiguration without altering the hardware architecture, thus simplifying expansion and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a multi-drop bus system is used to connect peripheral devices, then the system architecture is standardized and easy to implement, but the data acquisition speed and processing efficiency are limited
Solution Approach 1:
The patent extracts the multi-drop bus system from the architecture and replaces it with direct point-to-point connections between the FPGA and peripheral devices. This eliminates the bus arbitration and polling overhead, enabling parallel data acquisition from multiple devices simultaneously, thus dramatically increasing data acquisition speed while reducing system complexity.
Solution Approach 2:
The patent segments the centralized bus control into distributed direct connections. Each peripheral device (A/D converter, D/A converter, digital input/output device) is independently connected to the FPGA, allowing autonomous parallel operation. This segmentation removes the single-point bottleneck of the bus system and enables high-speed concurrent data processing.
2Measurement precision
If a multi-drop bus system is used, then device connectivity is simplified, but signal processing accuracy deteriorates due to electromagnetic interference
Solution Approach 1:
The patent removes the shared bus infrastructure that acts as an electromagnetic interference channel. By implementing direct dedicated connections between the FPGA and each peripheral device, the common impedance coupling and signal crosstalk inherent in bus systems are eliminated, thereby improving signal processing accuracy and reducing electromagnetic interference.
Solution Approach 2:
The FPGA acts as an intermediary with dedicated direct connection interfaces to each peripheral device. This intermediary architecture provides isolated communication channels that prevent electromagnetic interference from propagating between devices, while the FPGA's internal logic ensures synchronized and accurate signal processing.
3Adaptability or versatility
If the hardware architecture is fixed, then system stability is maintained, but flexibility and ease of expansion are reduced
Solution Approach 1:
The patent implements a dynamic architecture where the FPGA's point-to-point connection matrix can be reconfigured through software without hardware changes. New peripheral devices can be integrated by programming the FPGA to establish new direct connections, allowing the system to adapt to different configurations while maintaining stable operational characteristics through the consistent FPGA interface layer.
Solution Approach 2:
The FPGA serves as a universal interface that can directly connect to and control multiple types of peripheral devices (A/D converters, D/A converters, digital input/output devices) through standardized direct connection protocols. This multi-functional capability allows the same hardware architecture to support various system configurations and expansions without requiring physical hardware modifications.
4Productivity
If peripheral devices are connected through a bus system, then system integration is simplified, but control precision and parallel processing capability are reduced
Solution Approach 1:
The patent segments the monolithic bus control architecture into multiple independent direct connection channels between the FPGA and each peripheral device. This segmentation enables true parallel processing where the FPGA can simultaneously control and acquire data from multiple devices without bus arbitration delays, dramatically improving productivity while the modular connection approach keeps the architecture manageable.
Solution Approach 2:
The patent merges the control functions for multiple peripheral devices directly within the FPGA logic, eliminating the need for external bus controllers and arbitration logic. By combining the control intelligence into the FPGA itself with direct connections to each device, the system achieves high-speed parallel processing while reducing overall system complexity through integrated control.
Data Source
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AI summary
The invention relates to a microscope, in particular to a scanning probe microscope provided with at least one peripheral electric component and comprising a programmable logic to which said peripheral electric component is connected without inserting a data bus.