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date_collect_
- 基于单片机的数据采集系统 完成数据采集并对采集的数据进行时频域分析 软硬结合 -based SCM data acquisition system as well as data acquisition completed the data collection time-frequency domain analysis of the software and hardware combination
duijiangji
- 最新对讲机芯片RDA1845的控制程序,包含发送和结束程序,带液晶实时显示频率,唯一的RDA1845的详细编程注释-Latest radio chip RDA1845 control procedures, including procedures for sending and ending with LCD display real-time frequency, the only detailed programming notes RDA1845
temperature
- 此设计以单片机STC89C51为核心,由声音传感器采集脉搏信号,经过LM324前置放大电路、滤波电路和比较电路后得到与脉搏相关的脉冲信号,将该脉冲信号作为定时/计数器T1中断信号交由单片机进行脉冲周期的计算,T0做定时器。然后得出每分钟的脉搏搏动次数(即心率),并将结果1602LCD上显示心率。在对人体脉搏检测时,具有检错排错的功能。若出现误操作(如不小心移动时产生的噪声)造成检测到的心跳次数不正确的结果,所以在程序中检测时间到达第5秒时,先对其进行计算,若结果超出正常范围则自动返回重新检测,直
msp430_hs0038
- msp430写的红外线通行程序,可通过设置计时时间来调节发射频率和发射编码-msp430 wrote infrared access procedures, time to adjust by setting time-frequency firing and launch codes
NRF2401
- 设计了基于射频nRF2401和数字温度传感器DS18B20的无线测温报警系统。整个系统由测温发射机和显示、控制接收机组成:首先利用温度传感器DS18B20采集测温信号 ,第二步把温度信号存储在主控芯片中,通过无线射频nRF2401发送到接收机,第三步由接收机控制LCD动态显示,最后接收机控制指示灯和报警器做出相应的反应。形成无线通信、控制等功能于一体的新型系统。系统设计了简明的人机交流按键和指示灯,能够实现实时设置上下限报警温度,有效传输距离达到20-40米,测试表明其便携性与实用性兼备,工作性
c8051f020_pwm
- 运用C8051F020单片机,编写频率可调的PWM波,并通过1206的液晶实时地显示此时频率和占空比的大小-The use of the the C8051F020 monolithic integrated circuit, the preparation of the of the PWM of frequency adjustable wave, and and through the the the 1206 of the LCD in real-time display the the
DTFT
- 该程序可以用于验证DTFT的各种性质,包括时间反转特性、频率反转特性、卷极性、调制性等等。-The program can be used to verify the nature of the various DTFT, including time-reversal properties,frequency-reversal properties, convolutional properties, modulational properties and so on.
kekongfangda
- 用单片机AT89s52对可编程滤波器芯片MAX262 进行程序控制,可以同时对两路输入信号进行二阶低通、高通、带通、带阻以及全通滤波处理,滤波器的中心频率在15kHz~50kHz 频率范围内实现64 级程控调节,其Q 值在0.5~64 范围实现128 级程控调节。-In a simple, accurate, reliable, stable and universal principles, use of a hierarchical design to match the idea of i
12345
- time frequency analysis
SOUNDER
- ST套件产生报警音 本实例的目的是让大家学会用单片机产生声音的方法,学会计算程序所用时间 本实例的功能是能PIC16F84产生报警音,频率分两个0.1s第一个 0.1S频率从1.8K-3.5K匀速增加第二个0.1S频率从3.5K-1.8K匀速减少, 程序复位后,蜂鸣器开始报警 PIC单片机学习网-----http://www.pic16.com 烧写时应注意:配置位已经在程序中写明,加载HEX文件时会自动加载,烧写时不用再手动设置配置位。 实验时
Equalization_Tutorial
- Adaptive equalization教程-Adaptive equalizers compensate for signal distortion attributed to intersymbol interference (ISI), which is caused by multipath within time-dispersive channels. Typically employed in high-speed communication
timer-frequency-output
- 本程序利用51单片机的定时器定时时间的变化,由P1.0 口 产生200——250HZ变化的频率。-The program uses 51 SCM-up time changes, generated from the P1.0 port 200- 250HZ changes in frequency.
time
- 带频率的流水灯,主要是用输出时间次数,和8位端口循环显示。-Light water with a frequency output number of times, and eight port cycle.
TIME
- 基于MSP430定时器测两个上升沿脉冲的时差,可以作为精确频率计-Based on the MSP430 timers measure the time difference of the two rising edge of the pulse, can be used as a precision frequency meter
time
- 通过P1.0端口以1HZ的频率输出信号,使用该信号点亮一个LED指示灯, 并将信号接入到INT1,统计中断的次数。 将中断的次数通过两个七段数码管采用十进制显示出来。当超过99次后,清零并 重新计数。-Through P1.0 port with 1 hz frequency output signal, using the signal light an LED light, And access to the signals to the INT1, statistical in
16BITPWMCAP
- 采用TI M4芯片,利用捕捉方式对输入频率进行高精度测量。捕捉频率上升沿脉冲时间,进行频率计算。-Using TI M4 chip, the input frequency is measured by using the method of capture. To catch the rising frequency of the pulse time, frequency calculation.
STM32F407输入捕获代码
- STM32F407输入捕捉代码,能测量输入信号的高、低电平时间,频率等,最高测量频率可达20MHz(STM32F407 input capture code, can measure the input signal of high, low level, time, frequency, etc., the highest measurement frequency of up to 20MHz)
frequency(PA0)
- 频率计的基本原理是用一个频率稳定度高的频率源作为基准时钟,对比测量其他信号的频率。通常情况下计算每秒内待测信号的脉冲个数,此时我们称闸门时间为1秒。闸门时间也可以大于或小于一秒。闸门时间越长,得到的频率值就越准确,但闸门时间越长则没测一次频率的间隔就越长。闸门时间越短,测的频率值刷新就越快,但测得的频率精度就受影响。本文数字频率计是用数字显示被测信号频率的仪器,被测信号可以是正弦波,方波或其它周期性变化的信号。如配以适当的传感器,可以对多种物理量进行测试,比如机械振动的频率,转速,声音的频率以及
xjrcw
- Based on SVPWM three-level inverter matlab simulation, For time-frequency analysis algorithm, Energy spectrum analysis and calculation.
2542
- For time-frequency analysis algorithm, Mainly based on the mtlab procedures, Filtering summation way broadband beamforming.