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.
標簽： Transmission Protection Line
上傳時間： 2020-06-07
上傳用戶：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.
標簽： Chipless_Radio_Frequency_Identifi cation
上傳時間： 2020-06-08
上傳用戶：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).
標簽： Processing Digital Signal RFID for
上傳時間： 2020-06-08
上傳用戶：shancjb
#define PI (3.14159265)// 度數表示的角速度*1000#define MDPS (70)// 弧度表示的角速度#define RADPS ((float)MDPS*PI/180000)// 每個查詢周期改變的角度#define RADPT (RADPS/(-100))// 平衡的角度范圍；+-60度(由于角度計算采用一階展開，實際值約為46度)#define ANGLE_RANGE_MAX (60*PI/180)#define ANGLE_RANGE_MIN (-60*PI/180)// 全局變量pid_s sPID; // PID控制參數結構體float radian_filted=0; // 濾波后的弧度accelerometer_s acc; // 加速度結構體，包含3維變量gyroscope_s gyr; // 角速度結構體，包含3維變量int speed=0, distance=0; // 小車移動的速度，距離int tick_flag = 0; // 定時中斷標志int pwm_speed = 0; // 電機pwm控制的偏置值，兩個電機的大小、正負相同，使小車以一定的速度前進int pwm_turn = 0; // 電機pwm控制的差異值，兩個電機的大小相同，正負相反，使小車左、右轉向float angle_balance = 0; // 小車的平衡角度。由于小車重心的偏移，小車的平衡角度不一定是radian_filted為零的時候
上傳時間： 2022-06-01
上傳用戶：
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.
上傳時間： 2022-06-20
上傳用戶：
VIP專區-嵌入式/單片機編程源碼精選合集系列（38）資源包含以下內容：1. 看看名字就應該知道是干什么用的了吧！ 這可是個好東東！我搜索了很久才找到的！ 獨樂樂.2. 51單片機c語言中斷的實現 還有很多例子可以參考。包括常用的中斷模塊 c語言單片機開發很有用.3. 這是利用C51語言編寫的讀寫AT24C512的程序.4. 這是利用CYPRESS CY7C63723匯編語言編寫的讀寫AT24C512的程序.5. 這個是我參考過的多級菜單.6. 可以用H.264編碼解碼器源碼(c語言).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點漢字的C++實現代碼.18. TC與BC++用戶界面程序設計 《Turbo CBorland C++用戶界面程序設計》（西安交通大學出版社 周升鋒 李立新 等著）的隨書軟盤.19. 用VB通過并口控制I2C總線.20. pcb封裝詳解.21. uClinux 下MicroWindows開發的電機控制平臺軟件和模擬示波器的雙路數據采集系統源碼.22. 51單片機PID計算程序.23. 詳細的介紹,以及其中庫函數的描述說明,用法等.24. 日本人設計的電子熱水瓶的全部嵌入式源碼,很好的實例.25. 一個極好的192*64LCD的C源代碼！.26. 51單片機.27. 自啟動vxworks---一個自啟動vx程序的開發文檔 vx編程指南----vx的一些基本編程介紹和操作手冊 tornado ---- tornado使用手冊 linux內核分析 ----- 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. 一個resist的程序.33. 在nios環境下的LCD的包括測試.34. nios 環境下的軟件編程.35. nios 的開發程序.36. 單片機與pc機.37. uIP0.9版本.38. lwip1.0.0協議棧tcpip.39. lwip在ucos上的移植.40. 網友張巍提供的tcpip協議棧,是一個成功穩定的以太網接口上的TCP/IP協議程序。里面包括有說明.
上傳時間： 2013-04-15
上傳用戶：eeworm
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