Modern power systems involve large amount of investment. An electric power system comprises of generation, transmission, and distribution of electric energy. Growth of power systems has led to very complex networks extended across large areas. In such situations, the proper functioning of a modern power system is heavily dependent upon the healthy operation of the transmission lines within it. Transmission lines are used to transmit a huge amount of power over a long distance. But as these lines are located in the open atmosphere, they are highly affected by different types of abnormal conditions or faults.
标签： Transmission Protection Line
上传时间： 2020-06-07
上传用户：shancjb
Introduction to Radio Frequency Identification (RFID): RFID is a wireless modulation and demodulation technique for automatic identification of objects, tracking goods, smart logistics, and access con- trol. RFID is a contactless, usually short‐distance transmission and reception technique for unique ID data transfer from a tagged object to an interrogator (reader). The generic configuration of an RFID system comprises (i) an ID data‐carrying tag, (ii) a reader, (iii) a middleware, and (iv) an enterprise application.
标签： Chipless_Radio_Frequency_Identifi cation
上传时间： 2020-06-08
上传用户：shancjb
Identification is pervasive nowadays in daily life due to many complicated activities such as bank and library card reading, asset tracking, toll collecting, restricted access to sensitive data and procedures and target identification. This kind of task can be realized by passwords, bio- metric data such as fingerprints, barcode, optical character recognition, smart cards and radar. Radiofrequencyidentification(RFID)isatechniquetoidentifyobjectsbyusingradiosystems. It is a contactless, usually short distance, wireless data transmission and reception technique for identification of objects. An RFID system consists of two components: the tag (also called transponder) and the reader (also called interrogator).
标签： Processing Digital Signal RFID for
上传时间： 2020-06-08
上传用户：shancjb
#define PI (3.14159265)// 度数表示的角速度*1000#define MDPS (70)// 弧度表示的角速度#define RADPS ((float)MDPS*PI/180000)// 每个查询周期改变的角度#define RADPT (RADPS/(-100))// 平衡的角度范围；+-60度(由于角度计算采用一阶展开，实际值约为46度)#define ANGLE_RANGE_MAX (60*PI/180)#define ANGLE_RANGE_MIN (-60*PI/180)// 全局变量pid_s sPID; // PID控制参数结构体float radian_filted=0; // 滤波后的弧度accelerometer_s acc; // 加速度结构体，包含3维变量gyroscope_s gyr; // 角速度结构体，包含3维变量int speed=0, distance=0; // 小车移动的速度，距离int tick_flag = 0; // 定时中断标志int pwm_speed = 0; // 电机pwm控制的偏置值，两个电机的大小、正负相同，使小车以一定的速度前进int pwm_turn = 0; // 电机pwm控制的差异值，两个电机的大小相同，正负相反，使小车左、右转向float angle_balance = 0; // 小车的平衡角度。由于小车重心的偏移，小车的平衡角度不一定是radian_filted为零的时候
上传时间： 2022-06-01
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INTRODUCTION In the past, adding speech recording and playback capability to a product meant using a digital signal processor or a specialized audio chip. Now, using a simplified Adaptive Differential Pulse Code Modulation(ADPCM) algorithm, these audio capabilities can be added to any PICmicro device. This application note will cover the ADPCM compression and decompression algorithms, performance comparison of all PICmicro devices, and an application using a PIC16C72 micro-controller.DEFINITION OF TERMS step size -value of the step used for quantization of ana-log signals and inverse quantization of a number of steps.quantization -the digital form of an analog input signal is represented by a finite number of steps.adaptive quantization -the step size of a quantizer is dramatically changed with time in order to adapt to a changing input signal.inverse quantizer -a finite number of steps is converted into a digital representation of an analog signal.
上传时间： 2022-06-20
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VIP专区-嵌入式/单片机编程源码精选合集系列（38）资源包含以下内容：1. 看看名字就应该知道是干什么用的了吧！ 这可是个好东东！我搜索了很久才找到的！ 独乐乐.2. 51单片机c语言中断的实现 还有很多例子可以参考。包括常用的中断模块 c语言单片机开发很有用.3. 这是利用C51语言编写的读写AT24C512的程序.4. 这是利用CYPRESS CY7C63723汇编语言编写的读写AT24C512的程序.5. 这个是我参考过的多级菜单.6. 可以用H.264编码解码器源码(c语言).7. Application of Bootstrap Loader in MSP430 With Flash Hardware and Software Proposal.8. Features of the MSP430 Bootstrap Loader.9. Implementing a Real-Time Clock on the MSP430.10. Experiments for the MSP430 Starter Kit.11. Solid State Voice Recorder Using Flash MSP430.12. Application of Bootstrap Loader in MSP430 With Flash Hardware and Software Proposal.13. Interfacing the DAC8574 to the MSP430F449.14. Interfacing the MSP430 and TMP100 Temperature Sensor.15. Ultrasonic Distance Measurement With the MSP430.16. Implementing a Direct Thermocouple Interface With the MSP430x4xx and ADS1240.17. 24点汉字的C++实现代码.18. TC与BC++用户界面程序设计 《Turbo CBorland C++用户界面程序设计》（西安交通大学出版社 周升锋 李立新 等著）的随书软盘.19. 用VB通过并口控制I2C总线.20. pcb封装详解.21. uClinux 下MicroWindows开发的电机控制平台软件和模拟示波器的双路数据采集系统源码.22. 51单片机PID计算程序.23. 详细的介绍,以及其中库函数的描述说明,用法等.24. 日本人设计的电子热水瓶的全部嵌入式源码,很好的实例.25. 一个极好的192*64LCD的C源代码！.26. 51单片机.27. 自启动vxworks---一个自启动vx程序的开发文档 vx编程指南----vx的一些基本编程介绍和操作手册 tornado ---- tornado使用手册 linux内核分析 ----- l.28. EasyARM 程序 RTC_TEST.29. EasyARM 程序 uart_TEST.30. EasyARM 程序 SPI_TEST.31. EasyARM 程序 I2C_TEST.32. 一个resist的程序.33. 在nios环境下的LCD的包括测试.34. nios 环境下的软件编程.35. nios 的开发程序.36. 单片机与pc机.37. uIP0.9版本.38. lwip1.0.0协议栈tcpip.39. lwip在ucos上的移植.40. 网友张巍提供的tcpip协议栈,是一个成功稳定的以太网接口上的TCP/IP协议程序。里面包括有说明.
上传时间： 2013-04-15
上传用户：eeworm
