A cost-effective design for a mid-range microcontroller-based lock-in amplifier

IF 1.9 4区计算机科学 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Microprocessors and Microsystems Pub Date : 2025-02-19 DOI:10.1016/j.micpro.2025.105145

Ignacio Horcas , David Moreno-Salinas , José Sánchez-Moreno

引用次数: 0

Abstract

Lock-in amplifiers are instruments widely used in physics and engineering laboratories, whose invention goes back to the 1940s. Due to the late electronic developments, the former analog implementations have been replaced with digital versions, mainly based on FPGAs (field-programmable gate arrays). The present work, exploiting the last advances in the microcontrollers field, consists in the development of a functional prototype of a low-cost lock-in amplifier based on a microcontroller with similar specifications to mid-range commercial amplifiers. The performance of the prototype has been tested and compared with commercial devices, showing a similar performance in common use cases at a much reduced cost.

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一种基于中档微控制器的锁相放大器的高性价比设计

锁相放大器是一种广泛应用于物理和工程实验室的仪器，其发明可以追溯到20世纪40年代。由于后期电子技术的发展，以前的模拟实现已经被主要基于fpga（现场可编程门阵列）的数字版本所取代。目前的工作，利用微控制器领域的最新进展，包括基于微控制器的低成本锁定放大器的功能原型的开发，其规格与中程商用放大器相似。原型机的性能已经过测试，并与商用设备进行了比较，在常见用例中显示出相似的性能，成本大大降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Microprocessors and Microsystems 工程技术-工程：电子与电气

CiteScore

6.90

自引率

3.80%

发文量

204

审稿时长

172 days

期刊介绍： Microprocessors and Microsystems: Embedded Hardware Design (MICPRO) is a journal covering all design and architectural aspects related to embedded systems hardware. This includes different embedded system hardware platforms ranging from custom hardware via reconfigurable systems and application specific processors to general purpose embedded processors. Special emphasis is put on novel complex embedded architectures, such as systems on chip (SoC), systems on a programmable/reconfigurable chip (SoPC) and multi-processor systems on a chip (MPSoC), as well as, their memory and communication methods and structures, such as network-on-chip (NoC). Design automation of such systems including methodologies, techniques, flows and tools for their design, as well as, novel designs of hardware components fall within the scope of this journal. Novel cyber-physical applications that use embedded systems are also central in this journal. While software is not in the main focus of this journal, methods of hardware/software co-design, as well as, application restructuring and mapping to embedded hardware platforms, that consider interplay between software and hardware components with emphasis on hardware, are also in the journal scope.