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单片机开发 Decoding most of the infrared signals can be easily handled by PIC16C5X microcontrollers. This appl
Decoding most of the infrared signals can be easily
handled by PIC16C5X microcontrollers. This application
note describes how this decoding may be done.
The only mandatory hardware for decoding IR signals
is an infrared receiver. The use of two types is
described here. Both are modular types used of ...
matlab例程 Example of a digital data transmission implementing GMSK modulation This Simulink model simulates a
Example of a digital data transmission implementing GMSK modulation
This Simulink model simulates as an example the transmission and reception of random digital data modulated with GMSK. The purpose of this model is to illustrate how part of the GSM transmission and reception works. It also measures ...
通讯/手机编程 In this letter, the error performance of an ultra-wideband (UWB) system with a hybrid pulse amplitud
In this letter, the error performance of an ultra-wideband (UWB) system with a hybrid pulse amplitude and position modulation (PAPM) scheme over indoor lognormal fading channels is analyzed. In the PAPM UWB system, input data is modulated onto both the pulse amplitudes and pulse positions.
书籍 Bandwidth-Efficient+Digital+Modulation
Traditional modulation methods adopted by space agencies for transmit-
ting telecommand and telemetry data have incorporated subcarriers as a sim-
ple means of separating different data types as well ensuring no overlap
between the radio frequency (RF) carrier and the modulated data’s frequency
spe ...
书籍 Wavelength Division Multiplexing
Wavelength division multiplexing (WDM) refers to a multiplexing and transmission
scheme in optical telecommunications fibers where different wavelengths, typically
emitted by several lasers, are modulated independently (i.e., they carry independent
information from the transmitters to the receivers) ...
技术资料 RT8059
The RT8059 is a high efficiency Pulse Width Modulated
(PWM) step-down DC/DC converter, capable of delivering
1A output current over a wide input voltage range from
2.8V to 5.5V. The RT8059 is ideally suited for portable
electronic devices that are powered by 1-cell Li-ion battery
or by other power s ...
技术资料 基于STM32 单片机光纤传感系统的研究
以STM32单片机为核心设计一种光纤传感气体检测系统。当调制激光进入光声池后通过光声效应得到声信号,所得信号由设置在光声池上的微音器检测经后置的解调电路完成检测。利用中心波长锁定来减小测量所得误差,利用二次谐波来消除气体背景噪声,从而进一步提高系统信噪比。该气体传感器的性能通过对水汽气体进行检测得以验证,此 ...
技术资料 B型剩余电流保护器设计
随着光伏发电系统快速发展,以及电动汽车充电桩的普及,传统的剩余电流保护器无法满足实际需求。介绍了一款B型剩余电流保护器,采用磁调制剩余电流互感器和零序电流互感器采集剩余电流。根据GB/T 22794—2017标准要求,可识别1 kHz及以下的正弦交流、带和不带直流分量的脉动直流、平滑直流等剩余电流信号。经信号调理电路将电压 ...
技术资料 基于ICL8038等构成的函数发生器电路
摘要：本系统以ICL8038集成块为核心器件，制作一种函数信号发生器，制作成本较低。适合学生学习电子技术测量使用。ICL8038是一种具有多种波形输出的精密振荡集成电路，只需要个别的外部元件就能产生从0.001Hz~30KlHz的低失真正弦波、三角波、矩形波等脉冲信号。输出波形的频率和占空比还可以由电流或电阻控制。另外由于该芯 ...
技术资料 基于单片机的直流电机调速控制
设计基于单片机的直流电机转速调速系统。以单片机为核心,加上测速、键盘输入及电机驱动等模块构成整个电机控制系统。对单片机内部资源和外围模块编程实现电机转速的采集和显示、键盘输入目标转速、内部运行增量式PID控制算法得到增量,根据增量对输出脉宽PWM占空比进行调制,使电机达到设定转速并匀速运转。PID控制是闭环控制 ...