1、 xx 大学学士学位论文 - I - 传感器准数字信号处理方法的研究 摘要 频率是电子技术领域内的一个基本参数，同时也是一个非常重要的参数。稳定的时钟在高性能电子系统中有着举足轻重的作用，直接决定系统性能的优劣。特别是对于传感器，输出信号中所携带的信息是由信号中的时间参量频率表示的，这种频率即准数字信号。随着电子技术的发展，测频系统使用时钟的提高 ,测频技术有了相当大的发展，测频方法多种多样，但是精度不尽相同。 DSP 数字信 号 处理 (Digital Signal Processing，简称 DSP)是一门涉及许多学科而又广泛应用于许多领域的新兴学科。 20 世纪 60 年代以来，随着计算
2、机和信息技术的飞速发展，数字信号处理技术应运而生并得到迅速的发展。 传感器数字信号处理是利用传感器对模拟信号或数字信号进行采集并把其转换成计算机可识别的电信号，并利用计算机对信号进行处理以达到计算机辅助控制或是计算机自动控制的目的。 本 文 从数据处理的基本理论出发，通过分析 1 个计数误差的来源 ，介绍了多周期同步等精度测频法， 提出以高性能数字信号处理器 为 基础的硬件实现框架，并详细介绍了硬件实现的各个部分以及各个模块之间的接口，包括芯片选用、硬件连接和软件编程。 介绍了误差的来源及结果精 度分析。 关键词 准数字信号 ； 数字频率计 ； 同步等精度 ； TMS320F2812； xx
3、大学学士学位论文 - II - Research On Digital Signal Processing Of Sensor Abstract Frequency is a basic parameter of electronics field, meanwhile, its a very important parameter. Stable clock is very important in high performance electronics system, determining the system performance directly. With the develo
4、pment of technology of electronics, the frequency measurement system using higher clock, the frequency measurement technology has very nice development, there are various of methods, but the precisions are not in the same level. DSP (Digital Signal Processing) is a new subject applied abroad to many
5、 areas, it refers to many sciences. Since 60s of 12th century, as the development of computer and information, the technique of Digital Signal Processing was born and developed rapidly. Digital signal processing of sensor is a method to process the signal (digital or analog) which captive by sensor
6、and had convert to the digital one, the digital one that can be identified by computer. That implemented by computer to come true the Automation. In this paper, first discussed the framework and characteristic of data collection and processing system, then based on the instantaneous frequency measur
7、ement receivers, as well as to the mode of sampling data formats, the author offers to a project based on high-performance digital signal processor, and explicate the various parts of the hardware and the interface between modules, including chip selection, connecting hardware and software programming. Find out the cause of the error and analyzing the precision. Keywords Digital Signal Processing； Digital Frequency Meter； Synchronization Precision；TMS320F2812；
