CN104602139A - Novel device for network communication technology - Google Patents

Abstract

The invention discloses a novel device for network communication technology. Through the adoption of the device, a plurality of GPRS users can share one wireless communication channel. The device has the following characteristics: (1) a wide network access range: network cabling is unnecessary on a borne and established wireless communication network, a remote access network function can be conveniently provided for each user using mobile terminals such as a mobile phone, a PAD and the like; (2) a high transmission rate: the transmission rate of the GPRS technology can achieve ~, J57.6Kbit/s, theoretically, the highest transmission rate can achieve ~ljlT1.2Kbps, and is more than ten times of the data exchange data in a GSM network, and the transmission efficiency is high; (3) real-time online performance: user equipment can access the network resource in real time as long as the user equipment is always in the online status; (4) automatic switching of data and voice service: a terminal user is capable of freely switching between the data service and the voice service at the same time while receiving and sending the network data; (5) billing by flow: the GPRS can charge according to the data amount of the data packets sent and received by a terminal user, even though the user is online for a long time, the charge cannot be produced if the data transmission is inexistent.

Description

A kind of novel for network communications technology device

(1) field

The present invention is a kind of novel belongs to electronic applications for network communications technology device.

(2) brief introduction

Telephone network digitlization automatic telephone exchanges and to be developed to " program control " mode by " electromechanics " mode is another major transformation of 20th century telephone communication.

SPC telephone exchange is computer-controlled telephone exchange, and it controls the subsequent duty of phone by computer technology by the program finished in advance.

The introducing of SPC (Stored program control) technology makes exchange controlling functions there occurs basic change, it is except obviously improving the speed of call treatment, quality and efficiency, also for the comprehensive automation of the network operation, management and failure diagnosis provides possibility.

Current ATM switch is mainly used in backbone network, and the high speed utilizing ATM to exchange and the pledge system to QOS provide semipermanent connection.

The deployment of NGN is implemented

Softswitch technology is a kind of new Call-Control1 technology, there is opening system framework, based on transmitted in packets, can the features such as plurality of access modes be provided, can provide the multiple real time business such as voice, multimedia, become the mainstream technology of circuit switching to packet switching evolution gradually.

From technology trends, circuit switching is by the soft switch evolution based on group technology, but switched telephone network will coexist with soft exchanging network within considerable time.

Soft switchcall server is made up of plurality of devices, mainly comprises Softswitch, Tandem Gateway, SGW, connects network equipment and the terminal side equipments such as IAD, sip terminal such as people's gateway, media server, application server.

The main application of soft switch concentrates on long-distance tandem, local user connects people's business and provide integrated communication solution for enterprise customer.

CCSA's (CCSA) network and the switching technology committee start to formulate soft switchcall server related specifications and standard from calendar year 2001, comprise equipment code, protocol specification, interface specification and business related specifications etc., complete related specifications 59 at present.

Adopt Softswitch technology to realize the evolution of telephone network, make telephone network to packetizing, broadband, intelligentized future development, will greatly promote the professional ability of telephone network, meet the development trend of network.

The introducing of soft switch makes based on Circuit-switched network transformation to be that key is that providing of its business is orderly, is can control with manageable based on IPization network.

Be different from the general business based on IP technology, and add the value-added service based on IP technology, make traditional speech business obtain new life.

Softswitch technology is not only the important technical of fixing speech network evolution, is also the only way which must be passed of mobile network's evolution simultaneously.

The challenge of technical development in the face of bringing based on network and the business of IP technology of IMS, the solution can controlling IP network is actively being sought by operator.The architectural framework of NGN make operator can control and management based on IP technology network and there is the ability of service management, and allow the network system possess the ability of fusion, there is in service layer the ability of flexible expansion and combination.

Can carry out meeting people to control in User Access Layer face, identify and management.IMS makes the fusion of mobile network and fixed network become possibility, and making becomes possibility based on the Service control of IP technology and management, NASS and RACE makes access-in management and control become possibility.

To the understanding of IMS with to understand also be constantly dark people, IMS is a kind of ability platform that network is possessed, and is applicable to the control based on SIP and business, is framework and the interface of global normalization, but IMS is a kind of business or a kind of application anything but, is not more the Unified Network framework to whole business.

The technical standard research of current industry to the uniform traffic framework that fixed network and mobile network merge mainly concentrates on IMS network.

With the release of CommonIMS for representative, IMS standardization effort has developed into a new stage.

At present, CCSA sets up at TC3 and TC5 the research that joint working group carries out common IMS standard, comprises the demand (first stage) of common IMS, the ergasia framework (first stage) of common IMS and common IMS networking general technical and requires (first stage).

Full-service operation is more urgent to the demand of fused business, and the application of IMS is more noticeable thus, although based on the control of SIP and business extremely important, whole business can not be supported after all at present.

Carriers in the world are all carrying out IMS test, and some operators are carried out simplifying and transforming; Some operators are bold in innovation and central controlled IMS are evolved into the IMS of distributed structure/architecture; Some operators try to explore, closely follow the tracks of, and progressively induce one.

External operator is not when having soft switch to dispose, employing IMS is carried out e-learning quality as the important means of IPization, and the operator of China has all made the overall arrangement for soft switch on fixed network and mobile network, demand for fused business is more urgent, whether IMS can show full-scale drama at the stage of China, depends on the professional ability whether can bringing market demand.

After network possesses WiMAX ability, mobile Internet will be flourish, the challenge that the development of mobile grouping field business also will bring multimedia control territory.

Realization fusion is a long-term target, and the factor related to is a lot.The value merged offers convenience for consumer and increases value, and IMS provides the possibility of integration technology at network and service layer, and its effect and value depend on cost and the performability of following business trend, IMS.

Information network technique development trend information network technique development trend is about the evolution of communication network, and Comrade Jiang Zemin gives the clear description of ubiquitous network evolution path in " development of new period China's IT industry " literary composition: " network technology is accelerated to broadband, wireless, intelligent future development.

Mobile communication broad band and fixed communication mobile 13 become to merging, and the various people's of connecing technology emerges in an endless stream, and the application prospect of REID is day by day wide.

The optical communication technique being feature with vast capacity, ultrahigh speed and extra long distance accelerates application, and the TPization process of communications network is constantly accelerated.

Telecommunications network, computer network, Broadcasting Cable Network convergence are obvious, by pool powerful by all kinds of means, multimedia comprehensive information platform, information network will cover each Terminal Type ".

The object of e-learning quality is to strengthen service competition ability, keeps the sustainable development of network, increases running income.Along with the development in Jie Ren market, broadband and becoming increasingly abundant of broadband service content, communication network has been inevitable to broadband, synthesization future development, the intension of NGN network also can constantly expand along with the development of technology and business and change, and weeding out the old and bring forth the new is the permanent power of the continuous evolution of communication network.

Future of network communications technology constantly carries out innovating and eventually to the historical progress merging direction evolution by being one in various aspect.

Software fault detection is the prerequisite of software fault location, eliminating, payment, comprises the software testing technology of Static and dynamic, software fault simulation, fault tree analysis and formalization detection method (Formal specification language technology and formal Verification Techniques) etc.

In general, in engineer applied, first the concrete phenomenon of fault will be determined, one should be had clearly to identify and locate to fault, when observation fault, the information of collection understands fully a lot of detailed problem, is in what process, in the past this process and runs whether success, this process when successful operation for the last time when such as fault occurs.

Understand fully that these problems are conducive to further tracing trouble.Software fault location passes through dump, print intermediate object program, follow the tracks of tracking, induction, deduction, control flow analysis, data-flow analysis, carrys out the character of diagnostic software fault based on the method such as code detection and program slice, degree and isolation software fault, determine fault happening part, for software fault is got rid of ready.

According to information before, consider the fault likely occurred, and they are sorted according to possibility, then progressively get rid of as the case may be, detecting really admits a fault is caused by hardware fault, makes increasing extent little, determine abort situation, make eliminating plan as early as possible.

It is by analyzing failure cause and fault location that software fault is eliminated, and modifies to the scope that fault and fault may have influence on, corrects.

The application and examination & verification, the formulation of eliminating plan, the eliminating plan that specifically comprise elimination perform, check software, software regression testing, examination & verification and payment.

The concrete maintenance measure of software aspect wants to reduce network communication failure, makes network more reliable and more stable, needs comprehensively to safeguard network.

For network maintenance staff, in software, common maintenance has the following aspects:

(1) network equipments such as switch, router and hub are checked, the system configuration of its running status and equipment be paid close attention to.

(2) check network settings, notice that whether server is normal, whether normally can access, also will check that whether agreement is normal.

(3) patency of Sampling network.Network is obstructed is the phenomenon often occurred in network operation; other main frame of concrete manifestation in a network certain 1 Ping; display packets need cost hundreds of even several thousand milliseconds; now file transfer slowly; in this case to check the state of hub and switch, according to circumstances judge.

(4) detection of internet security.The maintenance of this respect specifically comprises: carry out regular virus investigation virus killing to system, elimination virus and wooden horse; Fire compartment wall is opened to server, keeps the renewal often of version, detect whether there is user's intrusion behavior; Safety encipher is done to the database on computer, ensures the security performance of data.

Control pin (4), RST/VPD (9 pin): reset pin, pin occurs the high level of 2 machine cycles will make monolithic processor resetting; ALE/.PROG (30 pin): permission signal is deposited in address; .PSEN (29 pin): external memory storage read gate news signal; One EA/VPP (31 pin): the inside and outside gating of program storage, connects low level and read instruction from external program memory, if connect high level, reads instruction from internal program memory.

Software programming designs the main SCM Based design of this style running lamp design, is undertaken compiling, exporting hex file by writing assembler language.

With CJNE, this secondary program mainly judges which button is pressed, then jump to corresponding program entry address, performs instruction.Program starts by 0FFH assignment to Pl mouth, register A most, A and 0FEH compares by Application comparison not jump instruction, if Key1 key is pressed, namely P1.0 12 is low level, then program continuation execution is gone down, LcALL K1, jump to K1 subprogram, 07FH is assigned to A, A passes to P2 mouth, so first lamp is first bright, again numerical value is carried out moving to right one, just achieve second lamp and light, once perform, every lamp is once lighted from top to bottom, enough temporal for ensureing.

Time delay subroutine must be called.Compare with JNB instruction again, if Key2 key is pressed, then jumps to corresponding subprogram again and go down, otherwise continue to continue the first flower pattern.

Increase or reduce the time of light flash if necessary, then need to press Key6 key, this design can only convert 2 kinds of interval times.

The application system of software program design presentation single-chip microcomputer is made up of hardware and software, and need the height of coding control single chip computer pin level to change, realize LED one bright one goes out.

Software programming is an important component part in scm application system, is also the Focal point and difficult point of this design.

The present invention a kind of novel for network communications technology device program start just by 0FFH to Pl mouth, input to Pl mouth by signal, data are sent into register A again by Pl mouth, then data in A are compared with data-oriented 0FEH.

If Key1 key is pressed, not redirect, directly performs program below, namely jump in K1 subprogram and go; If Key1 key is not pressed, namely the signal that inputs of P1 12 and 0FEH different, then carry out redirect, program can jump to S1 subprogram, and whether in Sl subprogram, remain comparator input signal equal with 0FDH.Generally speaking, the CJNE instruction of applying here is used to judge which key of KeyI-Key5 is pressed, and go to jump in corresponding subprogram, hardware circuit shows as the conversion by switch control rule style.

Be below whether the judgement that Key1.Key5 is pressed: Key1 is pressed, then P1 mouth input data and sample 11111110b compare, identical, continue Kl, otherwise jump to sl; Whether sl:Key2 is pressed, then P1 mouth input data and 11111101b compare, identical, perform K1.

Otherwise jump to s2; Whether S2:Key3 is pressed, then P1 mouth input data and 1111101lb compare, identical, perform K2, otherwise jump to s3; Whether S3:Key4 is pressed, then Pl mouth input data and #1111011lb compare.

Identical, perform K3, otherwise jump to S4; Whether S4:Key5 is pressed, then P1 mouth input data and #11110111b compare, identical, perform K5, otherwise jump to MAIN main program; Now P1 mouth data are 0FFH.

Hardware program design working principle of hardware.Single-chip microcomputer:

1. XTAL1, XTAL2 connect external crystal-controlled oscillation.

2. P1.0 ~ P1.4 port outside connected switch is the reception of input signal; P2.0 ~ P2.7 port external LED strip connection resistance is the output of external signal, Low level effective.

3. RST connects reset signal.Crystal oscillating circuit: by the crystal oscillator part of two electric capacity and a 1MHZ, mainly provide basic clock signal to single-chip microcomputer.

Reset circuit: by two resistance, a switch, an electric capacity composition, is mainly used in the reset part of circuit.Switching circuit: be made up of 6 switches, one end ground connection, the other end connects the I/O mouth of single-chip microcomputer, for the selection that control single chip computer exports.LED circuit: be made up of 8 LED and resistance, a termination high level, the other end connects the output of single-chip microcomputer; Resistance is used for protecting LED, is protective resistance.

The low and high level control LED that P2 mouth exports lights or extinguishes.Definition and application communication, be use describe, describe, express one's emotion, the multiple gimmick such as words, specifically, vividly, reflect the one news report form of media event or typical character visually.

It is the one of narrative, is the conventional style of newspaper, broadcasting station, news agency.Communication is one of basic subject matter of publicity of the press, has the features such as content is true in detail specifically, formal freedom is flexible, expression way is various, language is vivid.

A kind of novel application for network communications technology device 5l single-chip microcomputer internal structure and individual I/O mouth of the present invention, the input and output etc. of signal, and participate in making in kind, beat one's brains and start, making in process in kind, wiring and welding, and circuit too much can may caused by short problem due to scolding tin, all allowed me acquire a lot of knowledge, a lot of experience.

Current design, problem still has, choosing of the such as selection of LED low and high level, and protective resistance, has just started at external about the 1K resistance of LED, but finds that lamp can not be bright, but P2 mouth has signal to export.

The production environment that long distance control system can allow staff's principle severe, and the current operating state that can determine equipment easily according to the display parameters of equipment.

If production process and equipment have occurred that unsafe state will send alarm signal to operator on duty, thus reduce the working strength of staff.

The development of this technology effectively can solve the wiring problem of cable network, is that one perfectly combines mobile communication technology and data communication technology, and he can allow multiple GPRS user share a radio communication channel simultaneously.

Also a single mobile subscriber can be allowed to use multiple channel simultaneously.The feature of GPSR network:

(1) network insertion scope is wide: the radio communication built up of carrying is online, without the need to network layout, the user of the mobile terminal such as each use mobile phone in position, pad easily can provide remote access network function.

(2) transmission rate is high: the transmission rate of GPRS technology can reach ~ and, J57.6Kbit/s, the highlyest in theory can reach ~ ljlT1.2Kbps, be more than ten times of exchanges data speed in GSM network, and the efficiency of order transmission is high.

(3) real-time online: as long as subscriber equipment is in online state all the time, realization that just can be real-time is to the access of Internet resources.

(4) data and speech business realize automatically switching.When terminal use is when receiving and send network data, free switching can be carried out between data service and speech business simultaneously.

(5) charge by flow: GPRS can according to terminal use transmit and receive data bag data total amount charge.If when not having data to transmit between them, even if permanent online of user, also rate can not be produced.

GPRS technology successfully breaches the circuit-switched communications mode that GSM network provides, work adds gateway support node and serving GPRS support node in gsm networks, and carries out part transformation to existing base station system and just can realize packet switching technology end to end.

The basic function of GPRS network system is that user adheres to ~ flPD F literary composition activation.

Mobile terminal is when starting to carry out Internet Transmission, and first need the work done to be exactly carry out network attachment, namely determine orientation and authentication, then accessed by PDP activation log on, system carries out address assignment by associated server.

In the process that user carries out, relate to a lot of unit as PCU, SGSN, HLR etc.Mobile terminal will carry out band of position renewal after being connected by attaching process ~ UGPRS network, thus initiates data transmission and receiving course.

After mobile subscriber application ~ IJIP address, just can be linked into specific data network by GPRS at any time.

Along with the development of technology, present GPRS technology also supports the access to netwoks based on WAP and TcP/IP protocol stack, data transmission service, electronic mail service, and multimedia service and wireless remote monitoring business, can well meet the demand of various application occasions.

It is can the virtual private data communication network of always online, transparent data transfer that GPRS DTU introduces GPRS DTU.

Mainly for be the application of the industries such as power automation, industrial monitoring, meteorology, coalfield, oil field, environment monitoring, utilize GPRS network can realize the transparent transmission of data message, thus complete remote monitoring function.

The realization of conventional GPRS technology adopts low-power consumption, high performance flush bonding processor, in ~ ICP/IP protocol, adopt transparent transfer of data, embedded watchdog function, system is recovered automatically, has several data interface, time the networking structure of 3 GPRS DTU adopts GPRS to carry out transfer of data, system can be divided into central server and terminal equipment, and terminal equipment is connected with GPRs DTU module.

What central server was conventional has following three kinds of access waies:

(1) center adopts computer to be fixed the mode of IP.Center public network fixes IP, and control point can initiate to connect directly to center, this mode stable and reliable operation.

(2) central site network adopts computer to add the mode of the Internet fixed field name analysis.Center public network dynamic IP+dns resolution service, the client business that first be engaged in DNS ~ E contact and opens DDNS, and control point first adopts domain name addressing system connection DNS ~ E business device, then finds center public network dynamic I P by dns server, connects.

This kind of mode can save the expense that public network fixes IP greatly, but stability is limited by the stable of DNA ~ E business device, so will find reliable DNS ~ E business business, this kind of scheme is applicable to small-scale application.

(3) center adopts computer to add mobile APN special line, the Intranet that a little all adopts fixes IE this kind of scheme Call center by an APN access via telephone line commmunication company GPRS network, adopt privately owned fixed ip address to carry out wide area connection between both sides' dlsw router, between GGSN and commmunication company's dlsw router, adopt gre tunneling.

For client distributes special APN, domestic consumer must not apply for this APN.SIM card for GPRS private network only opens this special APN, and restriction uses other APN.

After obtaining APN, move inner fixing IP to all control points and central dispense.Adopt End to End Encryption between mobile terminal and server platform, avoid the leakage that information is possible in whole transmitting procedure.

Both sides adopt fire compartment wall to isolate, and carry out IP address and ports filter on fire compartment wall.This scheme in real-time, safety and stability more first 3 kinds all greatly improve, be suitable for that security requirement is higher, data point is many, requirement of real-time is higher applied environment, at the best networking mode that fund allows situation to foretell.

GPRS wireless telecommunications are the technology in long distance control system with far-reaching prospect, along with the progress of science and technology and the reduction gradually of communication cost, use the long distance control system occupation rate commercially of GPRS technology to increase gradually.

The application of Fibre Optical Communication Technology is once global reform, and it has brought the highway of information the mankind.

Optical fiber communication plays leading role at information transfer connection, and in scientific progress in the future, it is light that optical fiber communication can play a part to lift lumping weight.

Ordinary optic fibre general single mode fiber is the most frequently used a kind of optical fiber.

Along with the development of optical communication system, light repeater span and single wavelength channel capacity increase, G.652.A the performance of optical fiber is also likely optimized further, show the lower attenuation coefficient in 1550rim district be not fully utilized and the lowest attenuation coefficient of optical fiber and zero dispersion point not at the same area.

Core net optical cable China adopts optical cable on main line (comprising main line in public backbones, inside the province main line and district) comprehensively, and wherein multimode fiber is eliminated, all adopts monomode fiber, comprises G.652 optical fiber and G.655 optical fiber.

Although G.653 optical fiber once adopted in China, from now on can not developing deeply.G.654 optical fiber its can not increase fibre system capacity very significantly, it did not use in the land optical cable of China.

Adopt discrete optical fiber in trunk cable, do not adopt fibre ribbon.Trunk cable is mainly used in outdoor, and in these optical cables, once used tight sleeve layer strand formula and skeleton construction, stopped using at present.

Optical cable in Access Network optical cable Access Network is apart from short, and branch is many, dividing and inserts frequently, in order to increase the capacity of net, normally increasing fiber number.Particularly in city's interior conduit, because internal diameter of the pipeline is limited, while increasing fiber number, increasing the optical fiber collection dress density of optical cable, reduce optic cable diameter and weight, is very important.

Access Network uses G.652 general single mode fiber and G.652.C low water peak single mode fiber.Low water peak single mode fiber is suitable for dense wave division multipurpose, has a small amount of use at present in China.

Communications optical cable optical fiber in power circuit is dielectric medium, and optical cable also can be made all dielectric, completely without metal.Such nonconductive optical fiber cable will be the optimal communication line of electric power system.

The nonconductive optical fiber cable laid for power line pole line has two kinds of structures: i.e. all dielectric self-supporting (ADSS) structure and the wound form structure on overhead ground wire.

ADSS optical cable can lay separately because of it, wide accommodation, is widely used in the power transmission system transformation of current China.

ADSS optical cable recent demand amount is at home comparatively large, is current a kind of hot product.

Realize the ideal that ultra-long span transmission repeaterless transmission is backbone transport networks, the company had at present can adopt dispersion to put in order technology, realizes the repeaterless transmission of 2000-5000Km.

Some companies improve optical fiber index just further, adopt Raman amplifiction technology, can extend the distance of optical transport larger.

Constantly there is the requirement in order to adapt to market in novel optical fiber, the technical indicator of optical fiber is being updated, and various novel optical fiber is continuing to bring out, and each major company is just stepping up to develop new kind simultaneously.

The first, for the novel high-capacity long-distance optical fiber of long distance communication.

The second, for the novel LWPF of metropolitan area network communications.

Three, for the novel multimode fiber of local area network (LAN).

Four, the hollow optic fibre of the non-h of future.

If light signal that multiple transmission wavelength suitably staggers by vast capacity WDM system transmits on a road optical fiber simultaneously, then greatly can increase the information carrying capacity of optical fiber, the basic ideas of Here it is wavelength division multiplexing (WDM).

All-optical network WDM wavelength-division multiplex technique practical, provides the effective way utilizing fiber bandwidth, makes high-capacity optical fiber transmission technology achieve breakthrough.

The raising of the Optical Fiber Transmission capacity between point-to-point, for the transmission of high-speed high capacity Broadband integrated service network provides effective way.

Optical communication technique, as the important support platform of information technology, will play an important role in Future Information society.

Claims (7)

1. a kind of novel introducing for network communications technology device SPC (Stored program control) technology of the present invention makes exchange controlling functions there occurs basic change, it is except obviously improving the speed of call treatment, quality and efficiency, also for the comprehensive automation of the network operation, management and failure diagnosis provides possibility;

Current ATM switch is mainly used in backbone network, and the high speed utilizing ATM to exchange and the pledge system to QOS provide semipermanent connection;

The deployment of NGN is implemented

Softswitch technology is a kind of new Call-Control1 technology, there is opening system framework, based on transmitted in packets, can the features such as plurality of access modes be provided, can provide the multiple real time business such as voice, multimedia, become the mainstream technology of circuit switching to packet switching evolution gradually.

2. the present invention is a kind of novel controls pin (4) for network communications technology device, RST/VPD (9 pin): reset pin, pin occurs the high level of 2 machine cycles will make monolithic processor resetting; ALE/.PROG (30 pin): permission signal is deposited in address; .PSEN (29 pin): external memory storage read gate news signal; One EA/VPP (31 pin): the inside and outside gating of program storage, connects low level and read instruction from external program memory, if connect high level, reads instruction from internal program memory;

Software programming designs the main SCM Based design of this style running lamp design, is undertaken compiling, exporting hex file by writing assembler language;

Program starts by 0FFH assignment to Pl mouth, register A most, A and 0FEH compares by Application comparison not jump instruction, if Key1 key is pressed, namely P1.0 12 is low level, then program continuation execution is gone down, LcALL K1, jump to K1 subprogram, 07FH is assigned to A, A passes to P2 mouth, so first lamp is first bright, again numerical value is carried out moving to right one, just achieve second lamp and light, once perform, every lamp is once lighted from top to bottom, enough temporal for ensureing.

3. a kind of novel application system introducing single-chip microcomputer for the programming of network communications technology device software of the present invention is made up of hardware and software, and need the height of coding control single chip computer pin level to change, realize LED one bright one goes out;

The present invention a kind of novel for network communications technology device program start just by 0FFH to Pl mouth, input to Pl mouth by signal, data are sent into register A again by Pl mouth, then data in A are compared with data-oriented 0FEH;

If Key1 key is pressed, not redirect, directly performs program below, namely jump in K1 subprogram and go; If Key1 key is not pressed, namely the signal that inputs of P1 12 and 0FEH different, then carry out redirect, program can jump to S1 subprogram, and whether in Sl subprogram, remain comparator input signal equal with 0FDH; Generally speaking, the CJNE instruction of applying here is used to judge which key of KeyI-Key5 is pressed, and go to jump in corresponding subprogram, hardware circuit shows as the conversion by switch control rule style.

4. the present invention a kind of novel be whether the judgement that Key1.Key5 is pressed: Key1 is pressed for network communications technology device, then P1 mouth input data and sample 11111110b compare, identical, continue Kl, otherwise jump to sl; Whether sl:Key2 is pressed, then P1 mouth input data and 11111101b compare, identical, perform K1;

Otherwise jump to s2; Whether S2:Key3 is pressed, then P1 mouth input data and 1111101lb compare, identical, perform K2, otherwise jump to s3; Whether S3:Key4 is pressed, then Pl mouth input data and #1111011lb compare;

Identical, perform K3, otherwise jump to S4; Whether S4:Key5 is pressed, then P1 mouth input data and #11110111b compare, identical, perform K5, otherwise jump to MAIN main program; Now P1 mouth data are 0FFH.

5. the present invention is a kind of novel for network communications technology device single-chip microcomputer:

1. XTAL1, XTAL2 connect external crystal-controlled oscillation;

2. P1.0 ~ P1.4 port outside connected switch is the reception of input signal; P2.0 ~ P2.7 port external LED strip connection resistance is the output of external signal, Low level effective;

3. RST connects reset signal; Crystal oscillating circuit: by the crystal oscillator part of two electric capacity and a 1MHZ, mainly provide basic clock signal to single-chip microcomputer;

Reset circuit: by two resistance, a switch, an electric capacity composition, is mainly used in the reset part of circuit; Switching circuit: be made up of 6 switches, one end ground connection, the other end connects the I/O mouth of single-chip microcomputer, for the selection that control single chip computer exports; LED circuit: be made up of 8 LED and resistance, a termination high level, the other end connects the output of single-chip microcomputer; Resistance is used for protecting LED, is protective resistance;

The low and high level control LED that P2 mouth exports lights or extinguishes; Definition and application communication, be use describe, describe, express one's emotion, the multiple gimmick such as words, specifically, vividly, reflect the one news report form of media event or typical character visually;

It is the one of narrative, is the conventional style of newspaper, broadcasting station, news agency; Communication is one of basic subject matter of publicity of the press, has the features such as content is true in detail specifically, formal freedom is flexible, expression way is various, language is vivid.

6. a kind of novel application for network communications technology device 5l single-chip microcomputer internal structure and individual I/O mouth of the present invention, the input and output etc. of signal, and participate in making in kind, beat one's brains and start, making in process in kind, wiring and welding, and circuit too much can may caused by short problem due to scolding tin, all allowed me acquire a lot of knowledge, a lot of experience;

Current design, problem still has, choosing of the such as selection of LED low and high level, and protective resistance, has just started at external about the 1K resistance of LED, but finds that lamp can not be bright, but P2 mouth has signal to export;

The production environment that long distance control system can allow staff's principle severe, and the current operating state that can determine equipment easily according to the display parameters of equipment;

If production process and equipment have occurred that unsafe state will send alarm signal to operator on duty, thus reduce the working strength of staff.

7. the present invention is a kind of novel allows multiple GPRS user share a radio communication channel for network communications technology device simultaneously;

(1) network insertion scope is wide: the radio communication built up of carrying is online, without the need to network layout, the user of the mobile terminal such as each use mobile phone in position, pad easily can provide remote access network function;

(2) transmission rate is high: the transmission rate of GPRS technology can reach ~ and, J57.6Kbit/s, the highlyest in theory can reach ~ ljlT1.2Kbps, be more than ten times of exchanges data speed in GSM network, and the efficiency of order transmission is high;

(3) real-time online: as long as subscriber equipment is in online state all the time, realization that just can be real-time is to the access of Internet resources;

(4) data and speech business realize automatically switching; When terminal use is when receiving and send network data, free switching can be carried out between data service and speech business simultaneously;

(5) charge by flow: GPRS can according to terminal use transmit and receive data bag data total amount charge; If when not having data to transmit between them, even if permanent online of user, also rate can not be produced;

GPRS technology successfully breaches the circuit-switched communications mode that GSM network provides, work adds gateway support node and serving GPRS support node in gsm networks, and carries out part transformation to existing base station system and just can realize packet switching technology end to end.