Integrated Materials Measurement with Synchronized Low-Noise Signals
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Solution Overview
Problem
Current experimental setups for measuring materials' properties, such as electron transport properties, face challenges with high noise and interference due to the use of disparate equipment units, leading to difficulties in system-wide noise mitigation, calibration, and synchronization, which affects the accuracy and repeatability of measurements.
Innovation Solution
A measurement system comprising a source unit, a measurement unit, and a control unit with digital signal processing, synchronization, and calibration capabilities, which provides a synchronized and calibrated source and measurement signal, and includes features like lock-in analysis, AC/DC measurement, and noise analysis to mitigate noise and interference system-wide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate equipment units are used for measurement, then functional versatility is improved, but system-wide noise mitigation and measurement precision deteriorate
Solution Approach 1:
The patent combines multiple separate measurement equipment units (signal source, lock-in amplifier, voltmeter, ammeter, A/D converter) into a single integrated measurement system. This consolidation eliminates the need for multiple independent devices, reducing the overall noise floor and interference while maintaining all required measurement functions. The integrated architecture allows for system-wide noise mitigation strategies that cannot be implemented with disparate units.
Solution Approach 2:
The integrated measurement system is designed to perform multiple measurement functions (voltage, current, resistance, impedance, phase) within a single platform. The system includes multiple measurement channels and configurable signal sources that can handle various measurement types, replacing the need for separate specialized equipment while maintaining functional versatility.
2Adaptability or versatility
If multiple separate equipment units are used for measurement, then functional versatility is improved, but device complexity and calibration difficulty increase
Solution Approach 1:
By merging multiple measurement functions into a single integrated system, the patent reduces the complexity of system-wide calibration and synchronization. Instead of calibrating multiple independent devices with different time bases and reference standards, the integrated system allows for centralized calibration procedures that ensure consistency across all measurement channels.
Solution Approach 2:
While integrating multiple functions, the system is organized into distinct measurement channels and functional modules that can be independently configured and calibrated. This modular segmentation within the integrated architecture allows for manageable complexity while maintaining the benefits of system-wide coordination.
3Ease of operation
If separate equipment units with independent clocks are used, then device independence is maintained, but synchronization precision deteriorates
Solution Approach 1:
The integrated measurement system uses a single master clock that synchronizes all measurement channels and signal sources. This eliminates the synchronization errors that arise from using multiple independent clocks with different time bases, ensuring that all measurements are time-coordinated with high precision.
Data Source
AI summary
A measurement system includes a source unit to provide a source signal to a sample and a voltage source and/or a current source and a memory. The system also includes a measurement unit configured to acquire from the sample an measurement signal that may be responsive to the source signal and a voltage measuring unit, a current measuring unit, and/or a capacitance measuring unit, and a memory. The system also includes a control unit including a digital signal processing unit; a source converter; a measurement converter. The system further includes a synchronization unit configured to synchronize clocks of the digital signal processing unit, the source converter, the measurement converter, the source unit, and the measurement unit; a calibration unit for calibrating aspects of the system including the control unit; and a reference voltage supply configured to supply a common reference voltage for the control unit.