基于三次样条曲线插值的压力传感器温度补偿研究

压阻式压力传感器受半导体温度特性的影响,易产生热零点漂移和热灵敏度漂移,这是影响传感器性能的主要因素。现介绍了采用三次样条曲线插值方法对压阻式压力传感器热零点漂移和热灵敏度漂移进行补偿修正的方法,通过试验验证了三次样条曲线插值补偿方法对压力传感器热零点漂移和热灵敏度漂移的补偿效果。该方法对于解决高精度压力传感器的温度补偿问题具有较高的推广应用价值。     

长途MSTP以太网专线业务组网研究

随着需求的不断增长,运营商开始酝酿推出长途MSTP以太网专线业务。如何在传统的传送网上提供长途MSTP以太网专线业务成为传统运营商关注的问题,本文提出并给出了该业务的组网方案,包括承载网方案和MSTP设备互通及管理方案。     

IC快览

本表列出的新集成电路未包括在本刊产品撷英和新品发布栏目中。所有IC项目现在都可买到,除非另有说明。     

世界各地蜂窝电话发展近况

世界各地蜂窝电话发展近况电子工业部科技情报研究所马琳由于蜂窝电话是采用无线方式通信，因而用户可以用它在室外及旅途中进行电话联系。利用这一特点，蜂窝电话在商业界已被广泛应用．因为商业用户需要到各地出差并且在旅途中仍需与其办公室保持联系。移动通信设备．如...     

PetroChina Inks Bio-Fuel Deal with the State Forestry Administration

11 January 2007, Beijing - PetroChina Company Limited （PetroChina） signed a framework agreement with the State Forestry Administration （SFA） on the development of forest bin-fuel and officially kicked off the construction of the first batch of forest bio-fuel tree breeding bases in Yunnan and Sichuan, marking a substantial step forward in the cooperation of forest bio-fuel development between the two parties.     

China Holds Exercises of Oil Spills Emergency Control

Chinese emergency services carried out their largest ever exercise in early June to tackle an oil spill in the Bohai Sea to test their ability to protect the ocean environment. The drill involved a scenario in which a 10,000-ton oil tanker exploded and spilt 500 tons of oil. Soon after the oil tanker Tianpeng ＂exploded＂, a fireboat arrived to fight the fire and a helicopter hovered above to spread chemicals to control oil spill, followed by more vessels and another helicopter.     

logy, Fujian Agricul

2Many Cucurbitaceae plants were known to be Chinese medicine herbs and contain ribosome-inactivating proteins (RIP), a group of toxic proteins that have been proposed and demonstrated to play potential use as toxins in the therapy of a variety of human tumors and viruses inc     

npn AlGaN/GaN HBT模型与特性分析

基于实验数据对GaN材料的少子寿命和碰撞电离率进行了建模,应用漂移-扩散传输模型开展了npnAlGaN/GaN异质结双极晶体管的特性研究,给出了器件导通电压、偏移电压和饱和电压的解析式.结果表明:实际器件导通电压、偏移电压及饱和电压较大的原因主要是高基区电阻和基区接触的非欧姆特性,为器件的工艺制造提供了理论指导.     

China to Ban Unlicensed Production of Cakes and Moon Cakes Next Year

On August 29th, Pu Changcheng, Deputy Director of AQSIQ, addressing a national press conference on cake and moon cake quality safety market access, reported that as of the end of July 2007, 761cake and moon cake enterprises had gained market access qualifications and had obtained food production licenses.