本文介绍了一种基于英飞凌SP30 传感器的无源轮胎压力监测系统(Battery-lessTPMS)的设计,并给出了相关的程序流图、通信协议等。该系统可测定轮胎内部的温度和气压，确定故障轮胎并实
上传时间： 2013-08-03
上传用户：icarus
为了有效地提升铅酸蓄电池的使用寿命，同时实现对充电过程的监控，设计出一种用单片机控制的36 V铅酸蓄电池充电电源。本电路采用反激式拓扑，连续电流工作模式，电源管理IC设计在电源的副边，由ELAN公司的EM78P258N单片机模拟，是用可编程器件模拟电源管理IC，实现智能电源低成本化的一次成功尝试，通过对单片机的软件设计实现了充电电源的状态显示、充电时间控制、报警、过温保护、过压保护、过流保护等功能。本充电器真正的实现了铅酸蓄电池的三段式充电过程，其最高输出功率可达90 W，效率约85%，成本不到20元，具有很高的市场竞争力。 Abstract: In order to extend the life of lead-acid battery efficiently and supervise the charging process meanwhile， a 36V lead-acid battery charge powe supply controlled by microcontroller is designed. The charger is flyback switching power supply and works in CCM mode. A EM78P258N microcontroller made by ELAN microelectronics corporation is used as power management IC which is designed at the secondary circuit. The project is a successful attempt to low-cost intelligent power used microcontroller simulating power management IC. The charger also has the functions of the status reveal， charge time control， alarming， thermal protect， current limit and overvoltage protect by the software design. The circuit actually implements the three-step charge process， whose power is up to 90W and whose efficiency can get 85%. The net cost of this charger is less than 20 RMB， so that the charger is of powerful market competitiveness.
上传时间： 2013-11-16
上传用户：cepsypeng
Finds the polynomial p10 of degree less than or equal to 10 that interpolates cos x on the interval [0, PI/2] at 11 equally spaced points. Study the error betwee between the function and the polynomial at 41 equally spaced points over the same interval. Repeat the latter but use your 11 points to be Chebyshevs.
标签： interpolates polynomial the interval
上传时间： 2015-04-06
上传用户：hakim
fastDNAml is an attempt to solve the same problem as DNAML, but to do so faster and using less memory, so that larger trees and/or more bootstrap replicates become tractable. Much of fastDNAml is merely a recoding of the PHYLIP 3.3 DNAML program from PASCAL to C.
标签： fastDNAml attempt problem faster
上传时间： 2014-01-24
上传用户：bjgaofei
Overview DSN-Less Connection dBASE Excel Text File Visual FoxPro Access database SQL Server Oracle MySQL AS400 Sybase Sybase SQL AnyWhere DSN Connection
标签： Connection Overview DSN-Less database
上传时间： 2014-01-11
上传用户：努力努力再努力
huge hex convert to dec. the value limite is less that 10^50
上传时间： 2015-11-10
上传用户：我们的船长
How to detect Battery voltage in DragonBall SZ platform
标签： DragonBall platform Battery voltage
上传时间： 2014-01-08
上传用户：ynzfm
AVR450 Battery Charger for SLA, NiCd, NiMH and Li-ion Batter
标签： Battery Charger Batter Li-ion
上传时间： 2014-01-02
上传用户：坏天使kk
A distributed, peer-to-peer, server-less communication & messaging solution for JAVA (JMS), C++ and .NET applications, integrates with JBoss, WebLogic & WebSphere. Offers guaranteed delivery, security and transactions. Supports TCP, SSL & HTTP protocols
标签： communication peer-to-peer distributed server-less
上传时间： 2014-11-28
上传用户：wangchong
The library contain AVC H.264 baseline codec,which can process video less than 12 minutes.
标签： baseline library contain process
上传时间： 2014-08-24
上传用户：虫虫虫虫虫虫
