CAMERA20170920

电动工具无刷电机控制解决方案，基于单片机控制的无刷电机驱动，可立即启停，高性能，低耗能，锂电池充电。(Electric tools brushless motor control solutions, brushless motor driver based on single chip microcomputer control, can immediately stop, high performance, low energy, lithium battery.)

saber软件搭建的BUCK双闭环控制模块，电流内环和电压外环，直接能用。(saber software built BUCK double-loop control module, the current inner and outer voltage, can be used directly.)

说明：  CPU正在执行一项任务A，然后突然停止任务A去执行任务B，执行完任务B再回来继续执行任务A的过程。(CPU is performing A task. A, then suddenly stop tasks to perform A task B, perform the task B come back again continue to perform the task A process.)

本项目是基于Cortex-M3 的地沟油快速检测装置，旨在实现“地沟油”快速，现场检测。MCU控制可编程的直接数字频率合成器（DDS）产生正弦激励信号，经过可变增益放大器（VGA）和低通滤波器（LPF）作用于食用油阻抗传感器（实验室制作）信号经过仪器放大器送入微控制器（MCU）的模数转化（ADC）通道，MCU对采集的信号通过快速傅里叶变换（DFT）处理，实现食用油阻抗与相角的检测；USB和以太网接口，可与计算机通讯，以便对采集的数据进行存储和分析。(The project is based on the Cortex-M3 waste oil rapid detection device designed to achieve " waste oil" rapid, on-site testing. MCU control programmable direct digital frequency synthesizer (DDS) generates sinusoidal excitation signal through a variable gain amplifier (VGA) and a low-pass filter (LPF) acting on the oil-impedance sensor (lab produced) to send signals through the instrumentation amplifier into the microcontroller (MCU) modulo conversion (ADC) channels, MCU signal acquisition via Fast Fourier Transform (DFT) processing, oil resistance and phase angle detection USB and Ethernet interfaces, and computer communication, in order to collect data for storage and analysis.)

说明：  在keil下，主要提供了ad9851,12864(st7920),zlg7289,ads7886,51单片机外围程序。(In keil, the main provider of the ad9851, 12864 (st7920), zlg7289, ads7886, 51 MCU peripheral procedures.)

Rotating Machinery dimensional hologram of practical spectrum calculation routines, Complex modulation coherent pulse train signal, Including the final calculation of the compressed image peak signal to noise ratio and compression of the source.

说明：  HR202设计思路及程序电路 AD元件图3D图(Design Thought and Programming Circuit of HR202)

STM32L152的定时唤醒程序,唤醒之后PB10LED闪烁(STM32L152 timer wake-up program, wake up after PB10LED flashing)

基于PIC单片机的红外遥控液晶显示程序，远程控制液晶显示(Based on the infrared remote control LCD PIC microcontroller program the remote control LCD)

电子爱好者们经常希望测试自己的音频设备如声卡、碟机、功放、音箱等的性能指标，却苦于没有价格高昂的专业测试设备而无从下手，设计制作时也无法进行必要的测试指导。有些CD碟提供了测试信号，如著名的“雨果发烧碟（一）”、“My Disk”等，《无线电》也曾推出音频测试CD。但CD信号的精度有限，而且没有操作系统的配合，测量、记录和分析都很不方便。(Electronic fans often want to test their audio devices such as sound cards, CD, amplifier, speakers and other performance indicators, but have no specialized test equipment without the high price the start, can not carry out the necessary tests to guide the design of production. Some CD discs provide a test signal, such as the famous Hugo Audiophile CD (a) , My Disk and so on, Radio has launched an audio test CD. CD signal but the accuracy is limited, and there is no tie, measurement, recording and analysis of the operating system is very inconvenient.)