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技术资料 基于单片机无线自动控制技术的栽培设施研究

为了解决栽培设施中的便捷性、准确性、稳定性及布线困难等问题,本文利用nRF2401无线模块设计了一种基于STC89C54RD+微处理器的自动检测温湿度控制系统。该控制系统能自动检测土壤的温湿度,并根据检测值与设定值比较自动完成对土壤浇水和人机界面交互等功能。通过设计合理可靠的通信协议使本系统能完成稳定的收发通信,经过现 ...
https://www.eeworm.com/dl/897124.html
下载: 6
查看: 3697

电源技术 DN458降压转换器简化低电压设计

  Many system designers need an easy way to producea negative 3.3V power supply. In systems that alreadyhave a transformer, one option is to swap out the existingtransformer with one that has an additional secondarywinding. The problem with this solution is that manysystems now use transfor ...
https://www.eeworm.com/dl/505/24335.html
下载: 152
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单片机编程 PCA9517 Level translating I2C-

The PCA9517 is a CMOS integrated circuit that provides level shifting between lowvoltage (down to 0.9 V) and higher voltage (2.7 V to 5.5 V) I2C-bus or SMBus applications.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of t ...
https://www.eeworm.com/dl/502/30990.html
下载: 143
查看: 1099

Java编程 December 19, 2006 - Ant 1.7.0 Available Apache Ant 1.7.0 is now available for download. Ant 1.7

December 19, 2006 - Ant 1.7.0 Available Apache Ant 1.7.0 is now available for download. Ant 1.7 introduces a resource framework. Some of the core ant tasks such as <copy/> are now able to process not only file system resources but also zip entries, tar entries, paths, ... Resource collections group ...
https://www.eeworm.com/dl/633/369410.html
下载: 32
查看: 1098

数学计算 SuperLU is a general purpose library for the direct solution of large, sparse, nonsymmetric systems

SuperLU is a general purpose library for the direct solution of large, sparse, nonsymmetric systems of linear equations on high performance machines. The library is written in C and is callable from either C or Fortran. The library routines will perform an LU decomposition with partial pivoting and ...
https://www.eeworm.com/dl/641/407093.html
下载: 31
查看: 1135

微处理器开发 The MINI2440 is an effecient ARM9 development board with a comprehensive price, it characterizes sim

The MINI2440 is an effecient ARM9 development board with a comprehensive price, it characterizes simple method and high performance-price ratio. Based on the Samsung S3C2440 microprocessor, it embodies professional stable CPU core power source chip and reset chip to ensure the stability of the syste ...
https://www.eeworm.com/dl/655/465118.html
下载: 166
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书籍 Smart Homes

In this research, we have designed, developed implemented a wireless sensor networks based smart home for safe, sound and secured living environment for any inhabitant especially elderly living alone. We have explored a methodology for the development of efficient electronic real time data processin ...
https://www.eeworm.com/dl/522299.html
下载: 1
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技术资料 高级PID控制算法.

Simulation can provide a lot of information about what the system is doing. We canadd the effect of different element, like Encoder resolution, ADC sampling rate, etc and understand how does it affect the system. Another benefit is the possibility to slow down the process, to gain insight on what ha ...
https://www.eeworm.com/dl/839911.html
下载: 3
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技术资料 基于单片机的水产养殖监控系统设计

针对高密度精养水产养殖,设计了水产养殖监控系统。采用STC15F2K60S2单片机作为主控制器,有效的控制水温、水位、流速、含氧量、pH值,有效提高水产养殖成活率,系统可靠性高。In view of high-density intensive aquaculture, the aquaculture monitoring system is designed.STC15 F2 K60 S2 MCU is used as the main control ...
https://www.eeworm.com/dl/895514.html
下载: 3
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技术资料 基于单片机的自动智能加油系统设计

设计了一种基于单片机的自动智能加油系统,系统主要包括控制单元、通讯单元、输入装置、显示模块、机械手、传感器等,实现给车辆自动加油,减少了加油过程中人员参与的工作量,降低了人工成本,有很大的推广价值。An automatic intelligent refueling system based on SCM is designed.The system mainly includes control units ...
https://www.eeworm.com/dl/897708.html
下载: 7
查看: 4918