通讯系统

A system model ofthe measurement and control based on client/server model with COM technology is designed with utilizing the COM technologys merit and conjoining the characteristic of the system. The communication between the procedures is come through the COM technology taken the replace of DDE.

利用COM技术的优点，结合测量与控制系统的特点，设计了采用COM技术的客户／服务器结构的测量与控制系统模型，用COM技术代替DDE技术实现进程之间的通讯。

The company's smart SIS Safety Instrumented Systems will also be installed on an independent network, with diagnostics communication to the process systems.

公司的智能SIS安全仪器系统也将被安装在一个独立的网络中，为过程系统提供诊断通讯。

The paper researches and designs the natural gas compressor operating mode monitoring system, according to the actual situation of compressor application in the natural gas collection and transport process. This system is mainly composed of the sensor; the signal recuperates circuit, the ADμC812 single-chip microcomputer, the Personal Computer, and the communication connection.

本论文根据天然气集输过程压缩机应用的实际情况，研究设计出天然气压缩机工况监测系统，该系统主要由传感器及信号调理电路、ADμC812单片机、PC机、通讯接口等构成。

The whole text designs the demand system in two parts of the hardware and software by divided several parts, that include the transplantation of the μ c/ OS-Ⅱembedded operate system transplanting into the ARM microprocessor , the communication of the USB interface in PC, the transplantation of the FAT16 file system transplanting into the μ c/ OS-Ⅱ embedded operate system, and the program design of the man-machine interface and the digital audio-frequency decoding.

全文从硬件和软件两个部分，分多个模块来安排设计我所要求的系统，其中包括μc/OS-Ⅱ嵌入式操作系统在ARM微处理器上的移植，与上位机上USB接口的通讯，FAT16文件系统在μc/OS-Ⅱ嵌入式操作系统上的移植，以及人机界面和数字音频解码的程序设计等。

This system adopted microprocessor 89C51 as the kernel component, and consisted of limiting amplifier circuit, buffer circuit, level indicating, audio-frequency decoding circuit, coding and decoding system for microprocessor, COM port communication circuit and etc.

系统以单片机89C51为核心部件，由限幅放大电路、缓冲电路、电平指示、音频解码电路、解码指示、单片机解码编码系统、串口通讯电路等模块组成。

It publishes original research, reviews, opinions and correspondence in systematics and evolutionary and interactive biology. The topics include taxonomic works in zoology, application of systematics in biological control, agriculture, aquaculture, medical and veterinary zoology, cladistics, experimental taxonomy, parasitology, ecology, behavior and the interaction of organisms with their environment.

该杂志主要发表有关系统学、进化和交互生物学的原创性论文、综述、观点以及通讯等，其内容涵盖动物分类学，系统学在生物控制、农学、水产中的应用，药物和畜牧动物学，遗传分类学，实验分类学，寄生虫学，生态学，行为以及生物与环境的相互影响等。

Square-wave passive standby UPS based on MCU is presented. There are some functions of the system: realizing the uninterruptible power supply according to following the track of grid and changing grid and inverter in phase when grid is abnormal; advanced battery management; communication and supervision with PC. The principle of the system is analyzed.

研究了一种单片机控制的单相方波输出后备式UPS，该系统实现了在市电不同状态下，系统逆变输出与市电的同相切换，实现了对设备的不间断供电；实现了对蓄电池的智能管理；可以与 PC机进行通讯，便于用户监控等功能。

The remote inspection system of street lighting insulation resistance and Freeway Power Line Guard System development method will discuss in this thesis.

由於科技的蓬勃发展，电力线载波与GPRS无线通讯技术的快速进步，使得远距即时监控得以实现，本论文将探讨路灯绝缘电阻远距检测系统及高速公路电力线路防盗系统之研制方法。

Microcontroller of 51 series is applied in the hardware and the underwater buoy communicates with the receiving and processing system of the land station by RS-485 serial interfaces.

硬件部分采用51系列单片机实现，水下测量浮标通过RS-485串行口与岸站接收处理系统进行通讯。岸站接收处理系统的软件使用Visual Basic6.0编写。

Access-reception System takes charge providing multifarious means to accept and treat the access from E-business customer, while Management System administers the information in the platform in all-round on the basis of Certification Authorize System. Payment System achieve the task that customer pay their money in bank to the dealer. Safeguard System is the basis of other three systems, and it concerns with the safety of while transaction system. Safeguarding System includes many fields, such as safety of system management, safety of operating system, safety of network communication etc.

其中接入体系主要负责为用户提供各种不同的接入手段，例如电话、计算机等，并提供相关接入层的计费管理等功能；平台的管理体系建立在身份安全认证体系基础之上，为具体业务应用提供综合性的管理，其中主要包含信息交换的管理和运营数据的管理两个方面；支付体系实现各种电子商务业务的支付和结算工作；安全体系则是电子商务服务平台其它三个体系的基础，它的完善与否直接关系到整个系统交易的安全，它本身覆盖了系统管理安全、操作系统安全、网络通讯安全等多个方面。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。