1、翻 译 部 分英文原文Present situation and developing trend of coal mine automationand communication technologyHU Suiyan(Changzhou Automation Research Institute，China Coal Research Institute，Changzhou 213015，China)Abstract : The paper introduced the development history of the mine automation and communication
2、 technology.The paper analyzed the function features of the present mine automation and communication technology.The paper provided some key technologies to be solved in the near future.Key Word : mine automation; dispatch communication; industrial Ethemet; GEPON; mine wireless communication;1 Devel
3、oping process of coal mine automation and communication1.1 Coal mine automationCoal mine automation in China can be traced back to the l 960s.It explored from early simplestart stop and locking control by relaying to more complicated control system updated gradually by transistorsmal1scale integrate
4、d circuit and SCM .At presentmost coal mines have established special monitoting and con仃ol systems such as safety and production monitoring and conol system.electriccon system for belt conyevOrpower monitoring and control system，and integrated these systems by highspeed network，and gradually comple
5、ted and deve1oped local production automation systems，towards integrated mine wide automation1.2 Coal mine communicationCoal mine communication is integrant for coalmine production and dispatchingDue to multiprocedure and scattered working spots，it is difficult to cover mine width by one communicati
6、on system or one communication modeIn terms of operating mode，coal mine communication consists of fixed communication and mobile communication；in term s of usingarea，it consists of dispatching and communication system for mine width and local communicationsystem In China explosion proof electromagne
7、tic telephone has been employed for mine dispatching andcommunication in early timeIn 1980s。mineused analog program-controlled dispatching and communication system were developed，and in 1 990s，digitalprogram controlled dispatching and com unicationsystem were developed with capacity of hundreds of t
8、elephones in mine underground，which could meetmain dispatching and com unication requirements ofvarious coal minesMobile commun ication systems for coal mine include systems of throughground communication，leakage com unication， inductive communication，carrier com un ication，PHS communication，CDM Aco
9、m unication and so on2 Coal mine automation technology2.1Highspeed monitoring and control networkThe present highspeed monitoring and control network in coal mines in China mainly is industrialEthernet，special industrial Controlnet，GEPON and M CTP And redundant industrial Ethernet is used for main t
10、ransmission in coal mine automation systems and is wellknown and used in most coal minesin ChinaThe special industrial Controlnet is usedonly in a few mines and is to be phased out becauseOf its poor openness.Based on highspeed EthernetandTDM(TimeDivisiMultiplexing)MAC(Media Access Contro1)the new G
11、EPON system employs point-to-point structure and passive optical transmission，which can provide broad band access for various integrated services which are suitable for video，data and voice transmission and will have wide application.2.2 Autom ation platform softwareAutomation platform softwarethe k
12、ey element for coal mine automation，consists of management and control software and W EB service softwarewhich are installed in management and control server of control layer and in W EB server of management layer respectivelyAutomation platform software has two options:one is to make configuration
13、design and secondary development based on the present configuration softwareand the other is to make customized design according to coal，mine conditionThe configurationsoftware is more suitable for subsystemsHM Ithanfor data postprocessing and inform ation interchange of management layerBut the cust
14、omized automation platform software has advantages with high operating efi ciency，introducing in thirdparty software and meeting special requirem ents of users.2.3 Local production autom ation(1) 1 Safety monitoring and control system for coal mineExisting monitonng system s operating in coal mines
15、in China are independently developed by ourselves including KJ95 KJ9O，KJ4。KJ2000 etcBut the monitoring and control systems for coal mine in China are of decentralized type，and employing technologies of maste slave.narrowband and lowrate communication structure and time division communication with RS
16、485，FSK and DPSK commtmication modes，which have slow response speed，poor stability and electro.magnetic anti-jamming abilityThe newly issued AQ620 12006 general technical requirements of safety monitoring and control system for coal mine strengthened stability requirement of mineused sensor and added EM C inspection for monitoring and control systemThe monitoring and control systems will
