Mr . fung had been actively contributing to the development of the upper - air sounding system in the hko - from manual operation to automatic sounding as well as the upgrade to use a new series of radiosonde 冯先生一直以来积极参与部门发展高空空气探测系统工作，开始时人手操作，发展到自动探测，及至发展到现时采用无线电探空仪。
The theoretic in this thesis consists of three parts : basal principle and system structure of data fusion technology ; principle and method of fire detecting and fire detecting system based on data fusion system 本论文的主要理论研究工作包括三方面的内容，即数据融合技术的基本原理及体系结构、火灾探测的原理与方法和基于数据融合的火灾自动探测系统。
In order to achieve the auto - detecting of the icing under complex environment , we have put forward an icing detecting method based on the vibration principle in this paper , established the physical model of vibrating - tube ice - detector and got the theoretical formula of its parameters 为了实现复杂环境中结冰的自动探测，本文提出了一种基于振动原理的的结冰探测方法，建立了振管式结冰传感器的物理模型，并推导出了其参数的理论计算公式。
According to the mil - std - 188 - 220b protocol of american army , data packets can be relayed and forwarded automatically by nodes in network . the network can detect the change of topology in internal system and assure the information to be sent to the destination node in connective network . furthermore , it comprises of the radio data transmitting network for some equipments such as tactical data terminal and computer so on 本质上，它属于无中心的自组织分组无线网，按照美军战术互联网“数字消息传输设备子系统互操作标准” ( mil - std - 188 - 220b协议) ，通过节点对数据分组的自动中继转发，使网络能够自动探测到系统内部拓扑结构发生的变化，保证信息能达到网络中所有连通的节点，为战术数据终端和计算机等设备提供无线数据传输网络。
The system consists of an at89c51 single - chip microprocessor and interface circuits . when visitors or audience come near , the sensor will detects them and the system plays the commentary what is recorded in advance and in the same time , a special chip controls the lights from dark to light changing slowly . when no visitor there the lights become dark automatically , the energy - saving is achieved 该系统以89c51单片机为控制核心，利用热释电传感器自动探测是否有观众走近观看，通过软件模拟spi通讯协议控制单片语音录/放芯片播放录制好的解说词，同时控制灯光控制芯片控制展台的背景灯光的暗、亮，达到节能效果。
This paper summarizes the current technologies in the domain of fire auto detect & alarm system , sums up the advantages and disadvantages of all kinds of fire auto alarm control system , puts forward a novel fire auto alarm control system based on can - bus , and details the principle and structure of the system 本文综述了火灾自动探测报警系统领域的技术现状，在总结各种模式的火灾自动报警控制系统利弊的基础上，提出了一种基于can总线的火灾自动报警控制系统，并详细介绍了该系统的原理与构成。
