tongxin

基于单片机控制I/O 和模拟电压线性输出，用于基本系统控制(failed to translate)

在淘宝上购买的毕业论文，价值400的源程序，包含全部文件。一款基于单片机的灭火机器人模型的设计。系统以STC89C52RC单片机为控制核心，创新自制了火焰传感器用来测量火源，使用TCRT5000型光电对管检测循迹黑线，L298驱动电机前后转动，LCD1602液晶显示灭火的次数，通过控制继电器开关风扇灭火。(On Taobao buy thesis, the value of the 400 source code, including all documents. Fire fighting robot model based on a single-chip design. System microcontroller STC89C52RC to control core, innovation homemade flame sensor is used to measure the fire source, tracking black line on the tube use TCRT5000 photoelectric detection, L298 drive motor rotating back and forth, the LCD1602 LCD number of fire-fighting, fire control relay switch fan .)

滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)

利用easyx写的矩阵键盘仿真，希望可以给爱好者提供参考。(Use easyx wrote matrix keyboard emulation, hoping to provide a reference for enthusiasts.)

STM32F103VET6下的SD卡驱动，有需要的朋友请下。(rfef fsdfiw )

基于STC89C52单片机的12864动画显示程序，有详细的代码。(STC89C52 12864 based animation program, a detailed code.)

DDS9850，亲测可用，有中文解释，信号发生器(DDS9850, pro-test is available, there are Chinese explanation, the signal generator)

关于瑞士SHT11程序，把采集的数据在液晶上显示(Switzerland SHT11 procedures on the data collected in the liquid crystal display)

瑞萨 pwm 控制（自带头文件）压缩包打包 (Renesas pwm control (from the lead file) compressed packed)

读取ssdt函数当前地址，详见源码中、。。。。(Ssdt function reads the current address, see the source code. . . .)