KEY

Energy efficiency is the most important design goal for wireless sensor networks (WSNs). In this paper, we propose an energy-efficient cooperative MIMO scheme, which combines energy-efficient LEACH (EE-LEACH) protocol and cooperative MIMO. We name it as EE-LEACH-MIMO scheme. EE-LEACH is an improved LEACH algorithm, in which the network is partitioned to sectors with equal angle for avoiding the distribution non-uniformity of cluster heads. In EE-LEACH-MIMO scheme, the location and the residual energy of each node are considered when the cluster heads for clustering and cooperative nodes for MIMO system are chosen. For comparisons, LEACH, EE-LEACH, the simple cooperative scheme with LEACH and MIMO (LEACHMIMO), and EE-LEACH-MIMO scheme are simulated. The result shows that EE-LEACH-MIMO scheme can well balance the network load, save energy and prolong the network lifetime

基于STM32的室内温度控制系统设计含pcb短路图原理图完整文档(STM32 u6700 u5C0F u7CFB u7EDFpcb u548C u539F u7406 u56FE u5C01 u88C5 u5E93)

设计的电机驱动控制系统的主要功能有①控制电机的正转、反转；②为电机设计控制速度，有5m/s、10m/s、15m/s三个等级；③给电机设定转动的位移，让电机按照设定的位移移动；④1602液晶上显示电机的位移和速度；⑤利用4*4键盘数字输入控制电机的速度、按键C和D控制正反转、按键B控制三个档位的速度。(Using SCM software and hardware systems to achieve precision stage displacement, velocity through three or four phase stepper motors (motors meet the acceleration and deceleration characteristics), control the direction, location. Completion of the control circuit board hardware, including CPU, power amplifier, buttons, LED display. Software can be implemented in C.)

2014/3/12飞思卡尔光电组函数，线性ccd二值化成功，ccd控制舵机转角成功，直流电机成功，速度PID模块不成功，可以一战。(2014/3/12 Freescale photoelectric set of functions, linear ccd binary success, ccd control steering angle is successful, the success of the DC motor, the speed PID module fails, you can fight.)

双步进电机综合控制 用于51单片机 (Dual stepper motor integrated control)

24L01无线模块的驱动程序。包含发射与接收的程序。(24L01 wireless driver module. Contains the transmitting and receiving program.)

cd4052用stm32来写的程序，，实现电子开关电路 (CD4052 uses STM32 to write the program, the electronic switch circuit)

说明：  本程序基于单片机实现RTC实时时钟，简单易懂(The program is based MCU RTC real time clock, easy to understand)

以c51单片机为核心，利用1760芯片进行语音报时，51单片机控制(With c51 microcontroller core, the use of 1760 chip for voice timekeeping, 51 MCU control)

AT89C51驱动直流电机，有仿真跟C语言。直流电机驱动，实现直流电机的正、反转，PWM调速。(AT89C51-driven DC motor, a simulation with the C language. DC motor drives, DC motor forward and reverse PWM speed control.)