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D_f_apparatus
- 频率测量和周期测量的基本方法是采用以固定时钟作为参考时钟,分别测量单个周期的计数为周期,单位时间的计数为频率。但是由于被测信号的频率不同,测量精度会发生变化,采用低频测量周期,高频测量频率,然后分别求倒数,便可得到对应的频率和周期-frequency measurement and measurement cycle is the basic method used to a fixed clock as a reference clock, measured single cycle to c
single_clock_divider.rar
- 单周期除法器,速度快,满足频率要求,使得单周期内得到除数,Single-cycle divider speed, to meet the frequency requirements
ADC0832_test.rar
- ADC0832是一个8-bit的ADC转化芯片,工作频率为250Khz,最大频率可达400Khz,转化通道有两个,输入电压可分有单端或差分形式。本测试使用单端电压输入形式,从昔年的CH0输入电压,使用Xilinx XC3S200AN开发板,并且使用Xilinx ise工具中的ChipScope工具来查看转化后的DO数据是否正确。经验证,输入电压范围是0V--5.5V,当电压达到5.5V时,满刻度.,ADC0832 is an 8-bit conversion of the ADC chip, t
ddfs
- 使用单片机控制FPGA完成直接数字频率合成(DDFS),采用Keil C51-Complete single-chip FPGA to control the use of direct digital frequency synthesizer (DDFS), using Keil C51
ad_fpga
- 单片机控制FPGA的程序,包括AD转换,频率输出,测试程序-Single-chip FPGA-control procedures, including the AD conversion, the frequency of the output, test procedures
pinlvji
- 考虑到只基于单片机的频率测量计设计主要是以单片机为基础,原理简单,但由于自身精度问题,测量的范围小。而基于FPGA和单片机结合的频率测量设计主要是以单片机作为系统的主控部件,FPGA完成对时序逻辑控制、计数功能,能较好的利用了FPGA的高精度、高速等方面的优势。-Taking into account only single-chip based on the frequency meter is based on single-chip design based on a simple pri
EP3C8020111219125810_ROM_OK5
- 采用DSP builder v9.1实现正交两路单频输出,已经在EP3C80上面跑通,经实际验证是正确的。此例程非常简洁明了,可以作为DSP builder的入门示例。里面已经包含了生成好的modelsim仿真示例和仿真结果。-Achieved using DSP builder v9.1 orthogonal two single-frequency output, has been run through the EP3C80 above, are proven to be correct.
pulse_generating
- 采用VHDL语言实现输入一定的数字量,从而输出一定的频率可调的脉冲,可以与单片机接口,实现对特定对象的控制-VHDL language used to achieve a certain degree of digital input, so the frequency of certain adjustable output pulse, with the single-chip interface, the achievement of specific targets for the co
00012
- 基于单片机及LCD液晶显示的频率计,采用protues进行仿真-LCD liquid crystal display based on single chip and the frequency meter, using protues simulation
fpga
- vhdl和c编写,fpga结合单片机完成测频计的功能,fpga主要完成频率的测量并把数据发送给单片机,单片机控制12864液晶完成显示-vhdl and c preparation, fpga of the single chip to complete the function of frequency meter, fpga major to complete the measurement frequency and the data sent to the MCU, MCU contro
step_motor
- 步进电机是一种能够将电脉冲信号转换成角位移或线位移的机电元件,它实际上是一 种单相或多相同步电动机。单相步进电动机有单路电脉冲驱动,输出功率一般很小,其用途 为微小功率驱动。多相步进电动机有多相方波脉冲驱动,用途很广。使用多相步进电动机时, 单路电脉冲信号可先通过脉冲分配器转换为多相脉冲信号,在经功率放大后分别送入步进电 动机各相绕组。每输入一个脉冲到脉冲分配器,电动机各相的通电状态就发生变化,转子会 转过一定的角度(称为步距角)。正常情况下,步进电机转过的总角度和
djdplj
- 运用等精度测量原理,结合单片机技术设计了一种数字式频率计,由干采用了屏蔽驱动电路及数字均值滤波等技术措施,因而能在较宽的频率范围和幅度范围内对频率、周期、脉宽、占空比等参数进行测量并可通过调整闸门时间预置测量精度。-The use of other precision measuring principle in combination with single chip technology to design a digital frequency meter, shielded from t
Channel_EstimationMIMO
- 本文对MIMO技术中的信道估计、空时编码和单载波频域均衡技术(SC-FDE)及其在FPGA上的实现进行了深入的研究-In this paper, MIMO channel estimation techniques, space-time coding and single-carrier frequency domain equalization (SC-FDE) and its implementation on FPGA-depth study carried out
phase_FPGA
- 这是利用FPGA来测量频率的,把两路信号经过异或后变成方波,然后测高脉宽的个数和整个周期的脉宽数,算出占空比即相位,最后把数据传到单片机上显示出来。-This is used to measure the frequency of the FPGA, the two signals through different or later into a square wave, and then measured the number of high-pulse width and the cycl
ddsaom-200M
- 直接频率合成器 (DDS)ad9954 单点频功能程序,利用单片机控制ad9954,通过串口设置不同频率字,即可设置不同的频率。-Direct frequency synthesizer (DDS) ad9954 single frequency function procedures, the use of single-chip control ad9954, set a different frequency of the word through the serial port, you
frequency-counter
- 基于测周法的简单频率计,以STC89C52单片机为核心构成单片机应用系统。系统主要有单片机、显示电路两部分组成。-Measurement method based on a simple frequency counter weeks to form the core of the microcontroller chip STC89C52 applications. There are single-chip system, display circuit composed of two pa
frequency-meter-of-same-precision
- 本系统采用了以Altera芯片EPF10K10LC84-4和单片机仿真器伟福H51/S POD-H8X5X 为核心,同时辅有8位七段数码管和7219数码管驱动芯片。设计使用max+plus2,keil3和伟福开发环境,其中FPGA计数功能,FPGA与单片机的接口通信,单片机计算数据并驱动显示模块等功能。 系统实现了4hz~12Mhz频率的测量,并利用科学计数法显示。测量相对误差在0.005 以内,每个频段均显示6位有效数字。 本系统的特点在于高精度,显示界面科学友好。硬件部分VHD
frequency
- 等精度频率计(FPGA部分),通过单片机发送频率控制字给FPGA,FPGA实现计数,再将计数结果发送给单片机后进行数据处理最后发送到数码管或液晶屏显示待测频率-Precision frequency meter (FPGA part) by the single-chip transmit frequency control word to the FPGA, FPGA, to achieve the count, and then finally sent to the digital dat
final_PLL_130T_240Mhz
- Verilog 调试LMX2541,上板测试正常!单频输出,SPI方式控制。-Verilog debugging the LMX2541, on board test normal! Single-frequency output SPI control.
fenpin4
- 使用fpga实现四分频,将单一频率信号的频率降低为原来的1/4。(Using FPGA to achieve four frequency division, the frequency of a single frequency signal is reduced to the original 1/4.)
