This application report discusses the design of non-invasive optical plethysmography also called as pulsoximeter using the MSP430FG437 Microcontroller (MCU). The pulsoximeter consists of a peripheral probe combined with the MCU displaying the oxygen saturation and pulse rate on a LCD glass. The same sensor is used for both heart-rate detection and pulsoximetering in this application. The probe is placed on a peripheral point of the body such as a finger tip, ear lobe or the nose. The probe includes two light emitting diodes (LEDs), one in the visible red spectrum (660nm) and the other in the infrared spectrum (940nm). The percentage of oxygen in the body is worked by measuring the intensity from each frequency of light after it transmits through the body and then calculating the ratio between these two intensities.
標簽： plethysmography non-invasive application discusses
上傳時間： 2014-01-17
上傳用戶：天誠24
This paper will discuss the design of an asynchronous FIFO,Asynchronous FIFOs are widely used in the computer networking industry to receive data at a particular frequency and transmit them at another frequency. An asynchronous FIFO has two different clocks: one for read and one for write.
標簽： Asynchronous asynchronous the discuss
上傳時間： 2013-12-09
上傳用戶：Thuan
5800C Fm芯片資料和驅動代碼 技術特點： *國內首顆采用CMOS工藝的調頻收音機芯片； *驅動能力強，可直接驅動耳機及放大器； *功耗低，比國外先進方案還低1mA； *頻率覆蓋從76M-108M的各國調頻波段； *高度集成度，所需外圍器件數為零； *強大的LOW-IF數字音頻結構； *強大的數字信號處理技術（DSP）,實現自動頻率控制和自動增益控制； *數字自適應噪聲抑制 接受靈敏度高、音質出色、立體聲效果優異； *支持重低音，可調式電臺搜尋、柔軟靜音和混音等功能； *只需一個32.768K晶振作為參考時鐘； *支持I2C和SPI數字接口，支持I2S音頻接口，可以配合所有多媒體處理芯片； *可調去加重（50／75 us) ； *模擬和數字音量控制； *線性模擬輸出電壓； *兩線和三線控制接口模式； *封裝面積： 4×4mm，24-pin QFN
上傳時間： 2017-06-21
上傳用戶：1101055045
The Hilbert Transform is an important component in communication systems, e.g. for single sideband modulation/demodulation, amplitude and phase detection, etc. It can be formulated as filtering operation which makes it possible to approximate the Hilbert Transform with a digital filter. Due to the non-causal and infinite impulse response of that filter, it is not that easy to get a good approximation with low hardware resource usage. Therefore, different filters with different complexities have been implemented. The detailed discussion can be found in "Digital Hilbert Transformers or FPGA-based Phase-Locked Loops" (http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4629940). The design is fully pipelined for maximum throughput.
標簽： e.g. communication Transform important
上傳時間： 2017-06-25
上傳用戶：gxf2016
This file is a function under matlab which allow to compute and plot fast fourier transform of a signal. We can observe the effect of the signal parameter can be changed such as frequency and N points.
標簽： transform function compute fourier
上傳時間： 2017-06-27
上傳用戶：米卡
This file is a function under matlab which allow to read, play and plot audio signals from wav file. We can also extract the sampling frequency and coding bit number
標簽： file function signals matlab
上傳時間： 2014-01-25
上傳用戶：diets
基于LPC2478硬件平臺的IAP和遠程WEB應用。 系統共分為三個部分，BOOT區，LOW區和HIGH區。可通過WEB實現對芯片的遠程IAP在線升級.
上傳時間： 2017-06-28
上傳用戶：huannan88
The LN2410SBC is a high performance single board computer based on ARM920T (MMU included). Its ultra low power consumption, various built-in IO ports and support for Linux/WinCE/RTOS make it suitable for many industry applications.
標簽： performance computer included single
上傳時間： 2013-12-08
上傳用戶：ljt101007
The document explains the concept of multiple-bandpass filtering and compacting of arbitrarily spaced frequency bands.
標簽： multiple-bandpass arbitrarily compacting filtering
上傳時間： 2017-07-03
上傳用戶：pinksun9
ImpulseC Codeveloper fft code. This file implements the hardware portion of a 256 sample FFT using a radix-4 algorithm. This implementation demonstrates that results similar to hand-coded HDL can be achieved using the C language, and without using a low-level style of C code.
標簽： Codeveloper implements ImpulseC hardware
上傳時間： 2014-01-16
上傳用戶：hustfanenze
