英文Wireless environmental monitoring through wireless mobile communications (GPRS / CDMA) and the Internet (INTERNET) seamless docking with real-time data acquisition, remote transmission, remote storage and web publishing functions, may facilitate the realization of a variety of remote site monitoring and management, through analysis of data mining and the combination of knowledge and experience of experts can provide remote diagnostics of the relevant objects and control management. Wireless remote environmental testing real-time monitoring system integration technology, modern sensor technology, wireless communication, computer network technology as a whole, from the structure and composition was divided into three parts: the terminal acquisition transmit modules, the server receives storage module, Web-based data dissemination and analysis modules.Wireless monitoring and control is a remote control unit terminal devices, monitoring and control terminal set A / D functions and I / O functions as one, is responsible for on-site signals, industrial equipment monitoring and control. DTD110 RTU series wireless module is through a long period of Xi'an Datai electronics companies to explore and develop with feedback from users of wireless telemetry remote terminal equipment. The module uses 16-bit low-power16-bit MCU control, and DTD465 series wireless module with wireless telemetry and remote control. Provides 4 analog input and 4 analog outputs; or 4-way switch input, 4-way switch output. Analog can be a 0 ~ 5V voltage signal, it can be 4 ~ 20mA current signal. Industrial field transmitter can capture a variety of analog output, digital signal; to output control signals to control the relay output.There is also a remote wireless environmental monitoring simulation device. For unattended monitoring of remote environmental issues, an experimental simulation system design. Modular design, mainly by the energy harvesting module, the control center module, the sensor monitors the node module, the wireless transmission module and LCD display modules and other components. Monitoring center and the monitoring node with AVRAtmega16L microcontroller as the control and monitoring of environmental monitoring nodes encoded by amplitude modulation signal from the wireless transceiver module sent to the monitoring center. Environmental monitoring by the energy harvesting modules supply nodes, without replacing the battery. The system is low power consumption, flexible configuration node, simple structure, can achieve the temperature, humidity and light intensity monitoring, wireless and digital display.Simulator wireless environmental monitoring on the instructions there are so few parts. 1. Monitoring and detection of the terminal nodes with a circular air core coil antenna with a diameter of less than 1mm enameled wire or wire insulation jacket made of a tightly wound 5 turns. Coil diameter (3.4 ± 0.3) cm (One battery can be used for skeleton). Medium between the antenna coil air. Wireless carrier frequencies below 30MHz, modulation custom. Terminal node and detection monitoring shall not be used other than the provisions of the antenna coupling outside. Wireless transceiver circuitry to be made, not by the wireless sending and receiving finished module. Whether the changes in illumination, the method used to achieve occlusion photoelectric sensor. 2. Play some of the basic requirements to be in the detection delay and detection range to meet the requirements under the premise implementation. 3. Testing the detection of the node power consumption of nodes in Figure 2 shows the distribution map, keep a distance D + D1 = 50cm, by measuring the battery supply current detection node A to estimate the power consumption. Current test circuit shown in Figure 3. The figure for the filter capacitor capacitance C, current meter with 3 ½-digit multimeter DC current file and read the normal work of the maximum display value. If the D + D1 reach 50cm, this item is not tested. 4. Body of the report should include the design of the overall system block diagram, the core circuit schematic, the main flow, the main test results. Complete circuit diagram, it is important to use accessories given source.Space constraints, you can visit anytime, anywhere Internet, no longer have to network cabling and frustration. However, wireless communication is that people are dream-related technology, with it, we do not have the time during the exchange of data by time and the wireless network technology is too much, after all, good and bad. The current popular technology for a simple introduction.Narrow-band wide area network.1.HSCSDHSCSD (High Speed Circuit Switched Data) for wireless users to provide wireless data transmission rate of 38.3kbps transmission, it is faster than standard GSM communication standard 4 times faster data rate, can be prepared using the fixed telephoneUsers compared to the demodulator. At present, GSM network time slot in each single channel can only support one user, HSCSD by allowing a user at the same time, simultaneous access to multiple channels to dramatically improve data access rate. But the fly in the ointment is that this will lead to user costs. Assuming a standard data transfer rate is 14 400bps, to use with 4 slot HSCSD enable data access rate up to 57.6Kbps. Currently supports HSCSD phone with NOKIA's 6210 and 6250.2.GPRSGPRS (General Packet Radio Service multi-slot) is a very easy interface and IP packet switching business, its rate up to 9.6 ~ 14.4kbps, or even reach 115kbps, and can transmit voice and data. This technology is to improve Internet access speed of the current hot technology, but also may be used in wide area network. GPRS is considered the GSM Phase 2 Enhanced (GSM Phase2 +) access technology. Although GPRS packet data transmission on GSM standard, but can be and IS-136 standard used in combination. With the development of Internet and the popularity of cellular mobile communications, GSM development for all to see, so the prospect of GPRS technology is very broad.GPRS is a new GSM carrier services, improve and simplify the wireless data packet network access method, packet data can be directly in the GSM base stations and other points between the transmission network. It has access to a short time, the rate is high. Because it is a team approach, so you can charge by the number of bytes, the traditional dial-up access to these and a long time, according to the duration of charging circuit was different. At the same time, GPRS GSM network is divided on the network, it actually is the one Internet subnets. In support of GPRS, GSM can provide: E-mail, web browsing, enhanced short message service, instant wireless image transfer, look like a business, text, and shelter sharing, surveillance, Voice over Internet, broadcasting services. Because it uses a group technology with traditional business in the implementation of radio circuits have completely different characteristics.GPRS network supports both IPv4 and IPv6, is the way to third generation mobile communication network an important step. It is suitable for sudden Internet / Intranet services and can provide point to point carrier services and the completion of the short message service delivery. Expected in the future, it also provides a single point to multiple points of business. More importantly, GPRS has a limited QoS support, because it can be specified by the relevant parameters inherit the business, reliability, delay, traffic.Currently on the market is still difficult to get support for GPRS mobile phone, and China Mobile currently does not support GPRS. Reported that China Mobile is developing a "Monternet" may apply the technology is GPRS.3.CDPDCDPD (Cellular Digital Packet Data) using packet data mode, is widely recognized as the best wireless public network data communication protocols. It is based on TCP / IP based on an open system architecture, the open interface, high transmission speed, user unit to determine the air link encryption, air data encryption, compression, error correction and retransmission ofdata and the IP world standards Addressing mode wireless access organically combine to provide seamless connectivity with the network layer, multi-protocol networks.The system consists of wireless sensor multi-point detection coils - Detection of the terminal components, to achieve a number of monitoring points (simulation of the actual number of monitoring points with two monitoring points) and the monitoring terminalhalf-duplex communication, the terminal monitoring points can be monitored real-time acquisition sub- point of the surrounding temperature and light information, and monitoring by the midpoint of the main points - from the data communication between machines, the system uses FSK modulation with a carrier, child monitoring points and monitoring points in the terminal can be battery-powered low power 3V MCU AVR Atmega16L consumption for the control of the core, the company launched MOTOROLA FM transmitter ICs MC2833 monolithic form FSK modulation circuit, MC3363 monolithic narrowband VHF FM receiver chips FSK demodulation circuit, the photosensitive resistor and the digital temperature sensor composed of sensing DS18B20 system. The design ideas clear, simple and reasonable agency, low cost circuits to achieve most of the features requested topic indicators, monitoring simulation device probe time delay of not more than 5s, communication distance up to 50cm or more.Future wireless communication systems will use a variety of wireless communication technology, users will also be various types of user devices through heterogeneous wireless access networks. For the user, regardless of access technology want to have access to a wealth of wireless communications services. Environment Network's goal is to better plug and play support heterogeneous networks, so a more efficient use of network resources, and from a business point of view to better support the wireless communications market kinds of competition and collaboration modes. This book first describes the overall concept of the network environment and architecture, which focuses on environmental network architecture of the two basic characteristics, namely, environmental control hierarchical model space and the environment; then introduces the overall concept of environmental networks in a number of specific technology, including security, network synthesis, general environmental network signaling, multiple wireless access, mobility management, overlay network, network management context-aware and the environment. This book is the future of the wireless network development and application provides a new perspective. Electronic book available to institutions of higher learning, communication, information processing, computer and other professional or senior undergraduate students with lower grades, but also for engineering and technical personnel in these areas, industry analysts and executives Reference Although the wireless LAN has been gradually accepted by the people in network planning, system configuration, so there are still many users Sidongfeidong. The following describes some of the basics of wireless local area network and application profile.A wireless LAN can be used as an extension to use the wired LAN, wired LAN can also be used as an alternative to independent facilities, the wireless LAN provides a strong networking flexibility. Nevertheless, the formation of the network but there are still many issues to consider, sum up, the following aspects:1. Equipment purchase early preparations.Terms on the purchase of equipment, I always thought that the more important focus on product consistency, that choose the same vendor, the same rate of the product, so you can get the best compatibility and stability of the speed. Attention to look at the product packaging, and support for the product only supports the 802.11b 11M wireless speed seems slightly slower but the price is very affordable.The product currently supports most of 54M 802.11g products, is currently the mainstream of speed, its technical support and relevant information is also very complete, is the focus of the optional information; and 802.11g + generally support rate for the 108 108M, this is the futuretransfer rate within one year of the mainstream, wireless network if you have certain requirements for speed, more appropriate to buy such products, in fact, the price is not quite that expensive, wireless devices Ma, certainly slightly more expensive than the wired devices.2. Topological structure is not chaos.Topology of the network structure has been based on plane, built in the beginning of any network, they should consider the actual network environment.Wired and wireless coexistence environment:If you already have a wired network, to build a wireless network on this basis, it should be considered compatible with wired and wireless equipment, in line with the most to do with the least investment in the principles of things; the average family cable network are ADSL Modem + Router structure, the simplest way is to add a wireless AP as a wireless signal relay, and then configure the computer to a wireless network card; the wireless AP does not have a virtual dial-up feature, so it should be connected with the broadband router, near The unified management of a broadband router to wired and wireless networks, and networks to achieve two visits (although such management configuration up more trouble).The configuration is slightly simpler, more convenient way to manage is to replace the wired router with a wireless router, and wireless router can be wired with a LAN port connected to a computer; so that a router can be a good wired and wireless communications.IT168 has the co-existence on the wired and wireless installation and configuration of the article, we refer to can.Separate wireless environment:The establishment of a new wireless network environment, the same recommended wireless network card wireless router + structure, because it has maximum flexibility. When you need a wired connection, wireless router's LAN port can provide useful. The specific structures of such environments and configuration of the same articles, please refer to the station, there will not elaborate.3. Signal coverage to be cautious.Although wireless networks out of the shackles of cable, but how to ensure network coverage after the Establishment, it is to pay attention to. This is the main wireless signal transmitter and then place the book side of the issue. General wireless AP or wireless router, the coverage in the open area of about 100m, indoor coverage in the space cut off from the main subject of the situation, usually in the 15m range of the signal can penetrate 20cm of two block partition or wall of brick and concrete structure 20cm cut off and the guarantee of ordinary concrete and stable operation of the network; When the distance is too far away or during the partition is large, the coverage of the wireless network signal does not have enough margin to ensure stable operation of the network.So in order to solve the structure of the building complex of buildings, especially the wireless AP or wireless router within the coverage of small problems, you can increase the wireless AP or wireless router, the layout density, the installation of the antenna gain, and try to ensure that the signal coverage of wireless devices measures used within the solution.After 10 years of development, Wireless LAN technology has matured, applications become increasingly wide range of applications from small wireless LAN to enter the mainstream. Expects global sales of wireless LAN access point from 50 million units in 2000 increased steadily to 450 million units, the annual increase of 55%. Sales of wireless LAN will be about 3 million in 2000 increased to 34,000,000 in 2005, the annual increase was 53%. The next few years, wireless LAN technology will be more mature, product performance will be more stable, the market will continuously increase, the price will continue to decrease, large equipment providers will enter the market, most businesses and companies will use wireless LAN internal network building.Faced with such good prospects for development, China should vigorously promote the wireless LAN technology research and practical, to seize the opportunity for the developmentof wireless local area network. This not only greatly promoted the development process of the State of information, also for China's information industry and telecommunications market into the international market with excellent opportunities.中文无线环境监测是通过无线移动通信（GPRS/CDMA）和互联网络（INTERNET）的无缝对接，具有数据的实时采集、远程传输、异地存储和网络发布等功能，可方便实现对各种现场进行远程监控和管理，通过进行数据分析挖掘和专家知识经验的结合，可提供对有关对象的远程诊断与调控管理等功能。