Prev

Next

What's the difference between an industrial wireless... Terminal devices have different data access interfaces Wireless router provides one network interface of data access, terminal equipment need only with the network IP address as a gateway to the IP address of the terminal device must use specified or specify the IP address in the address period, and specify the IP address...

更多文章

VRRP function on industrial grade router VRRP is a selection protocol that dynamically assigns the responsibilities of a virtual router to one of the VRRP routers on the LAN. The VRRP router, which controls the virtual router's IP address, is called the master router and it forwards packets to these virtual IP addresses. Once the primary router is unavailable,...

更多文章

工业网关的功能组成 网关(Gateway)又称网间连接器、协议转换器。网关在网络层以上实现网络互连,是最复杂的网络互连设备,仅用于两个高层协议不同的网络互连。网关既可以用于广域网互连,也可以用于局域网互连。 网关是一种充当转换重任的计算机系统或设备。使用在不同的通信协议、数据格式或语言,甚至体系结构完全不同的两种系统之间,网关是一个翻译器。与网桥只是简单地传达信息不同,网关对收到的信息要重新打包,以适应目的系统的需求。 4G工业网关的基本功能是连接两个异构网络,这在工业物联网场景中尤为常见,因为传感器网络经常使用完全不同于普通网络层(长距离传输网络)的电信号和协议。   4G工业网关功能组成   网络层信号接口 它主要承担网络层信号的对接任务。与感知层信号接口相比,网络层信号接口一般简单得多,因为通常整个系统只需要一个标准的长途网络及其协议,因此相应的硬件接口和数据收发软件相对简单。然而,这并不是说它只能支持一种类型。在实际应用中,工业网关的制造商通常被设计为支持多种形式的长途网络,以实现产品的通用性。特定的表单可以是同时配置多个接口的方式,也可以以配置插件卡的形式设计产品,以便用户可以在离开工厂时选择要配置的不同配置。   传感层信号接口 主要负责传感器网络中各设备信号的对接工作。该模块包括用于不同电信号对接的硬件接口,以及相应的数据采集和指令发送软件。为了解决感知层的复杂性,工业网关厂商将根据各自的目标应用领域,装备感知层信号接口的硬件接口和协议组合。   就地数据库 在一些用于复杂数据处理流程或其他就地业务逻辑处理的场景中,处理后的数据还需要存储在网关本地数据库中。由于工业网关一般属于嵌入式计算设备,所以这类数据库也一般采用嵌入式数据库。嵌入式数据库功能简单,具有内存缓冲,提高了访问速度。   就地的业务逻辑 它主要处理与网关相关的传感器网络部分所连接的设备、传感器和执行器相关的本地系统的业务逻辑。不同网关的本地业务逻辑模块的丰富性和复杂性差异很大。如果工业网关中没有这样的功能模块,它通常被称为数据传输网关、协议转换器或通信管理器。有关就地业务逻辑的详细描述,请参见边缘计算。   数据处理 设备端数据处理主要解决数据不匹配问题。也就是说,服务器所需数据的范围、频率、完整性等等。数据处理的目的是对输入接口中的数据进行排序,将其转换为适合输出的数据形式,并将其推送到输出接口。输入端和输出端可以由设备端或服务器端播放,因此数据流是双向的,并且根据数据类型的不同而不同。   其他功能 除了上面的主要模块之外,网关还常常配置它的功能用户界面,要么使用按钮、命令行(通过Telnet或串口),要么使用图形界面(例如内置的WEB服务器,甚至面板)。如果网关具有适当的业务逻辑,它可能还需要工具来加载脚本文件、配置文件,等等,这些都是本地业务逻辑所需要的。 作为一种远程设备,4G工业网关的自我维护也非常重要。一般情况下,需要利用自己与服务器连接的优势,从服务器上自动下载自己的软件更新包并完成更新。还应通过远程登录完成部分设置和配置工作,以降低外派人员的现场维护成本,提高对用户需求的响应速度。

更多文章

Functional composition of 4G industrial gateway The basic function of the 4G industrial gateway is to connect the two heterogeneous networks, which is particularly common in the industrial Internet of things scenario, because the sensor network often USES completely different electrical signals and protocols from the common network layer (long distance transmission network).   4G...

更多文章

网关和路由器之间的区别 网关是充当转换代理的计算机系统或设备。网关是两个系统之间的转换器,它们使用不同的通信协议,数据格式或语言,甚至是完全不同的体系结构。与简单传达信息的网桥不同,网关重新打包它们收到的信息以满足预期系统的需要。那么网关和路由器之间的区别是什么? 网关和路由器之间的区别如下: 路由器的作用是连接不同的网络并传输信息。根据用途,可分为:接入,企业级,骨干级,太比特,多WAN和3G无线等。 网关 网关可以是路由器,交换机或PC。对于同一网段内的通信,不必涉及网关。只有当主机和非本地网段设备通信时,才需要将所有数据包发送到网关设备,然后通过网关设备转发或路由它们。 路由器是一个网络层系统。一般来说,市场上的路由器分为两类,一类是单协议路由器,另一类是多协议路由器。路由器可以转换数据格式,成为与协议不同的网络互连的必要设备。 网关与路由的关系可以表示为:网关是网络连接的基础,路由是网络连接的桥梁。 路由器使用静态或动态路由来确定网络之间的最短路径。静态路由需要管理员手动设置,动态路由USES协议以动态发现网络之间的路径并确定最短路径。通常,静态路由用于小型网络,动态路由用于大型复杂网络。 现在,路由器集成了网关功能,因此路由器也具有网关功能。 网关和路由器之间的区别 从网关和路由器的定义来看,如果只连接两个网络,则只需要一个网关。 假设只有两个网络:网络A和网络B. 为了使网络A和网络B能够通信,只使用网关连接两个网络,因为只有两个网络,并且不需要确定网络之间的最短路径。 如果需要连接多个网络,为了确保网络的可靠性,需要将网络结构设计为完整网络或部分网络。通过这种方式,网络之间的通信需要两个设备,网关和路由器。由于当前路由器集成了网关的功能,因此只能使用一个设备路由器。

更多文章

twitter

The difference between a gateway and a router

Category : 产品文章, 技术相关

A gateway is a computer system or device that ACTS as a transformation agent. A gateway is a translator between two systems that use different communication protocols, data formats, or languages, or even completely different architectures. Unlike Bridges that simply convey information, gateways repackage the information they receive to suit the needs of the intended system. So what’s the difference between a gateway and a router?

 

The differences between a gateway and a router are as follows:

 

The role of a router is to connect different networks and transmit information. According to usage, it can be divided into: access, enterprise level, backbone level, terabit, multi-WAN and 3G wireless, etc.

 

The gateway

 

A gateway can be a router, switch, or PC. For communication within the same network segment, it is not necessary to involve the gateway. Only when the host and non-local network segment devices communicate, it is necessary to send all the data packets to the gateway device, and then forward or route them through the gateway device.

 

Router is a network layer system. Generally speaking, routers in the market are divided into two categories, one is single-protocol router, and the other is multi-protocol router. The router can transform the data format and become a necessary device for network interconnection different from protocols.

 

The relationship between gateway and route can be expressed as: gateway is the foundation of network connection, and route is the bridge of network connection.

 

Routers use static or dynamic routing to determine the shortest path between networks. While static routing requires an administrator to set it manually, dynamic routing USES protocols to dynamically discover paths between networks and determine shortest paths. Typically, static routing is used for small networks and dynamic routing is used for large complex networks.

 

Now, routers integrate gateway functionality, so routers also have gateway functionality.

 

The difference between a gateway and a router

From the definition of gateway and router, if you simply connect two networks, you only need a gateway.

Suppose there are only two networks: network A and network B

To enable network A and network B to communicate, only use the gateway to connect the two networks, because there are only two networks, and do not need to determine the shortest path between the networks.

 

If multiple networks need to be connected, in order to ensure the reliability of the network, the network structure needs to be designed as a full network or a partial network. In this way, two devices, gateway and router, are needed for the communication between networks. Because the current router integrates the functions of the gateway, only one device, router, can be used.

The E-Lins H685 series 4G router with Ethernet is a compact, ruggedized 3G/4G/LTE cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.

In addition to the robustness, reliability, security, friendly-using, the H685 4G router with Ethernet is competent to be engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, AMR, vehicle, retails, vending machines, power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other fields.

Why would industrial routers set up VPN capabilities

Category : 产品文章

Industrial router is the industrial version added on the basis of ordinary router, while industrial VPN router is the VPN function added on the basis of industrial router. VPN generally refers to a virtual private network, which is simply a private network established on a public network for encrypted communication. VPN function is to achieve the target address conversion and remote access while encrypting the packet. Therefore, the industrial VPN router is very suitable for the data transmission security requirements of the project. Why would an industrial router set up a VPN function? So what are the benefits of the VPN feature?

VPN industrial router

VPNS allow you to work in a complex public network without worrying about security. Of course, this is also the basic function of industrial VPN routers;

2. It can solve the problem of networking with multiple devices at the same time and using the VPN function at any time. No more tedious operation after login and connection of each device is needed. As long as you switch a network, you can choose to use or not to use VPN function to achieve the effect of out-of-the-box;

3, a number of connected devices networking, some need to use local network, some use VPN network, so you can stagger the use of;

4. The industrial VPN router can connect multiple terminals with one account, no longer having to worry that the VPN account will limit the number of connected terminals;

Industrial router

5. Most of the industrial routers on the market have already supported the PPTP connection mode in the VPN, and the foolproof operation Settings are no longer the patent of the experts.

VPNS are very popular in industrial, commercial and civil applications. They can make network transmission more secure, professional and free. Classification of industrial VPN routers common classification of industrial VPN routers are PPTP, L2TP, IPSEC. The most common one is PPTP protocol. As mentioned above, most industrial routers on the market have PPTP security protocol, namely point-to-point tunnel protocol. Enables remote users to safely access the enterprise network through dialing into an ISP, through a direct connection to the Internet, or over other networks. L2TP is an industry standard VPN network transmission tunnel protocol, which is similar to the PPTP protocol in function. For example, it can also encrypt network data streams.

The difference is that PPTP USES a single tunnel and L2TP USES multiple tunnels. L2TP provides packet head compression and tunnel validation, while PPTP does not. IPSEC security protocol provides active protection and prevention of attacks through end-to-end security, which is the long-term direction of secure networking. In communications, only the sender and receiver are the only computers that are aware of IPSEC protection. IPSec security services require support for Shared keys for authentication and confidentiality, and require manual key entry. How to set up an industrial VPN router different brands of industrial VPN routers have different Settings, because the Settings and built-in web page Settings are made by the manufacturer. But the functionality is the same, and the setup is much the same.

The E-Lins H685 series 4G router with Ethernet is a compact, ruggedized 3G/4G/LTE cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.

In addition to the robustness, reliability, security, friendly-using, the H685 4G router with Ethernet is competent to be engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, AMR, vehicle, retails, vending machines, power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other fields.

告别SIM卡,eSIM时代到来!

Category : 产品文章, 技术相关

SIM卡是(Subscriber Identification Module ),也称为用户身份识别卡、智能卡,GSM数字移动电话机必须装上此卡方能使用。

在电脑芯片上存储了数字移动电话客户的信息,加密的密钥以及用户的电话簿等内容,可供GSM网络客户身份进行鉴别,并对客户通话时的语音信息进行加密。

解决SIM卡槽占用大量手机空间的难题SIM的尺寸经历了三种变化

标准卡:尺寸为 25mm×15mm×0.8mm

Micro Sim:俗称小卡,尺寸为12x15mm×0.8mm

Nano SIM:12.3mm×8.8mm×0.7mm

 

而如今随5G的到来,传统的SIM卡已经不能满足大众对于智能生活的需求,在这种情况下,eSIM应运而生。

 

eSIM卡,即Embedded-SIM,嵌入式SIM卡。eSIM卡的概念就是将传统SIM卡直接嵌入到设备芯片上,而不是作为独立的可移除零部件加入设备中,用户无需插入物理SIM卡,如同早年的小灵通。这一做法将允许用户更加灵活的选择运营商套餐,或者在无需解锁设备、购买新设备的前提下随时更换运营商。未来通用的eSIM标准建立将为普通消费者、企业用户节省更多移动设备使用成本,并带来更多的便利、安全性。

329日,中国联通宣布,全国范围内开通eSIM。这意味着eSIM将大规模走进公众视野。 

eSIM有什么好处?

1、不占空间,eSIM在制造过程中被嵌入到设备中,相比实体卡eSIM卡片能够节省更多的空间;

2、能适应异常恶劣的环境,与插拔式的传统SIM卡相比较设备集成的方式能够耐高温、防尘、抗震、具备适用面更广的电气特性;

3、灵活性灵活的选择运营商网络、OTA空中下载方式动态写入用户签约信息,可以实现产品销售后的用户自主激活;

4eSIM基于安全域的体系架构及PKI安全基础设施的引入,提供了更高的安全性。

综上,eSIM的优势不仅限于手机、可穿戴设备使用方便,它在优越性还体现在恶劣环境应用上。例如运行在高温、低温、高振动的环境中,设备插拔卡非常容易损坏,eSIM就能完美地解决这些问题。

例如工业路由器是一种,利用公用无线网络为用户提供无线的数据传输功能。已广泛应用于物联网产业链中的M2M行业,如智能电网、智能交通、智能家居、金融物联网无线通信路由器、移动POS终端、供应链自动化、工业自动化、智能建筑、消防、公共安全、环境保护、气象、数字化医疗、遥感勘测、农业、林业、水务、煤矿、石化等领域。通常它们需要工作在无人值守,甚至恶劣的天气下,在这种环境,eSIM的优势也给路由器带来福音。

 

伊林思科技的最新产品H900是一款双卡单模的4G/3G无线工业级路由器,最近已支持eSIM的应用。

其具备2LAN快速以太网口,2LAN千兆以太网口,及1WAN千兆以太网口,可选2.4Ghz+5Ghz双频WiFi,可支持POE,宽电压5-60V,串口等。具有多种工业级路由功能,可应用于多种工业场景。

Differences between industrial router and modem

Category : 产品文章

Industry level SMS cat is based on mobile GSM/GPRS network platform, embedded with industry level GSM/GPRS wireless module SMS and Internet devices. Modems are essential to computer networking, and because routers are often used with modems, many people confuse them. So, what are the differences between modems and routers?

 

Industrial MODEM is a modular product specially developed for remote control, remote data acquisition system and remote distributed control system. It is similar in shape to the size of business card, and is easy to connect with the user board.

 

 

What are the differences between industrial modems and routers

 

 

1. Different functions

 

Modem is a necessary equipment of computer networking, a dial-up modem computer can, and the router is a way to help multiple computers share a network device, with the help of the router, several computers can be in the same Internet line access to the Internet, however, necessary equipment of the router is not the Internet, no router, the computer can still connected to the Internet through modem.

 

 

2. Different connection modes

 

Due to the different functions, the two are connected in different ways. One end of a modem is connected to a telephone line, and the other end is connected to a computer or a router.

 

 

3. Different appearance

 

The modem has a simple shape, like a flat rectangular box, which is very small, while the router has a variety of shapes, including rectangular shape and oval shape, with a larger volume than the modem on the whole. In addition, the wireless router also has a number of different antenna devices.

 

4. Different ports

 

Modems generally have only two ports, one for the phone line and one for the Internet, while routers have more ports. Usually, there are five ports, one for the modem, and the rest can be connected to one or more computers at will.

 

Industry modem application:

 

Industrial modem applications are based on cabled data communication, and the industrial RS232 interface (RS232 or TTL level) is suitable for power, oil, telecommunications, military and other unmanned environments. Suitable for various industrial PC, meter reading system, remote control system, SCM remote data communication system;

 

Application: post and telecommunications, finance, power, government, transportation, military, enterprise and other data networks.

 

High-speed line :Internet access, lan-lan connection.

 

The E-Lins H700 series 4G router with Ethernet is a compact, ruggedized 3G/4G/LTE cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.

In addition to the robustness, reliability, security, friendly-using, the H685 4G router with Ethernet is competent to be engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, AMR, vehicle, retails, vending machines, power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other fields.

 

Highlights:

Multi-carrier 2G/3G/4G LTE support with dual SIM card slot

Cellular/WAN RJ45/WiFi client failover and Load Balance (Bandwidth link bonding)

Supports LTE Advanced with SIM-based auto-carrier selection

Cloud-managed (with NMS network management system), TR-069, Web management, SMS, SSH/Telnet/Command, SNMP

WiFi (802.11 a/b/g/n, 2.4Ghz)

Certified 3G/4G/LTE enterprise/industrial grade internal modems

Built-in transient and reverse polarity voltage protection, over-current and over-voltage protection;

5-40V DC voltage input range (5-60V DC option), Dual Power Inputs / Power Failover;

GPS / GNSS support

Serial Port support RS232+RS232 or RS232+RS485

DI/DO port * 4

Supports Ethernet (T1, DSL, Cable, MetroE), WiFi as WAN, and Metro WiFi

Ruggedized to ensure always-on connectivity

Create real-time alerts to monitor uptime

Offer secure, guest WiFi to passengers

Advanced security, VPN, and stateful firewall to protect sensitive data

Robust Metal Case is ruggedized for vibration, shock

Desktop, Wall-mount and Din-rail mount of installation

External antenna connectors for high gain antennas replacement

MIMO supported

 

All E-Lins communication terminals can be connected to the E-Lins remote managing and controlling platform (NMS), which brings the generous devices scattering in different areas to carry out concentrate monitor, configuration, updated, diagnose, maintenance, manage and control. Highly reduce the maintenance costing in the operator, integrator, devise supplier etc, increase the managing efficiency.

The detailed difference between 4G industrial router and 4G DTU

Category : 产品文章, 技术相关

 

4G industrial router and 4G DTU both realize the wireless network data transmission function, and the differences between them are mainly from the use method, appearance interface and application environment, etc. Today, we will introduce some differences between 4G router and 4G DTU.

 

Different methods of use:

 

4G industrial router:

 

The 4G router can convert Ethernet and fieldbus communication protocols. It only needs to set the IP address specified by the 4G router in the terminal device as the gateway. If the specified IP address (or the specified IP address segment) is not set, the communication function cannot be realized.

 

4 g DTU:

 

The main purpose of 4G DTU is to realize dial-up rather than a real gateway. For example, 4G DTU can be used as a new network device after the dialing process of the access terminal device is completed, and the terminal device address can be used as the binding address of 4G DTU.

 

Different application environments:

 

4G router: usually with VPN/APN function, with private network encryption, in addition, the industrial 4G router with WIFI function is suitable for outdoor WIFI wireless signal coverage projects and similar public transport WIFI and shopping mall WIFI sharing projects.

 

4G DTU: the transmission distance of field terminals is relatively scattered and the data communication rate is relatively high, so the real-time performance of 4G DTU can meet the requirements of most industrial fields and is usually used for data acquisition and monitoring system. For example, the charging pile remote monitoring system, environmental monitoring system, real-time monitoring of energy consumption, monitoring and application of dam water conservancy projects, etc.

 

Different network interfaces:

 

4 g router: provides one network interface of data access, terminal equipment needs only the IP address of the mouth to the 4 g router in the network as a gateway to the IP address of the terminal device must use specified or specify the IP address in the address period, 4 g router to and specify the IP address of the server host or server host IP address sections for data exchange, and all the other 4 g router is not set between the address of the can’t communicate.

 

4 g DTU

 

4 g DTU: DTU data access in general also provides a serial port or network interface, but their use is used to dial, not used to do in the true sense of the gateway, such as serial interface 4 g DTU after completion of the access terminal dial-up, 4 g DTU as terminal equipment of a new network equipment, terminal equipment address using the new network equipment binding address; However, 4G DTU of network interface is similar to ADSL of telecommunication to connect to the Internet, which generally requires the device to complete a dial-up action.

 

Different anti-interference of server network:

 

When using 4G router, the data transmission must comply with the preset regulations, otherwise, the correct communication can not be carried out, reducing the possibility of unnecessary network traffic; At the same time, according to the sent serial number and other key processing, to ensure that the server data will not be replay or retransmission.

 

4G DTU does not carry out relevant filtering during data transmission, so other machines can directly send some illegal information to the device terminal through the network. Meanwhile, 4G DTU increases unnecessary network traffic. At the same time, the data is not processed accordingly, which may lead to the replay or retransmission of wireless data, which will lead to the abnormity of the system, thus causing potential security risks.

 

The E-Lins H685 series 4G router with Ethernet is a compact, ruggedized 3G/4G/LTE cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.

In addition to the robustness, reliability, security, friendly-using, the H685 4G router with Ethernet is competent to be engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, AMR, vehicle, retails, vending machines, power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other fields.

 

Highlights:

Multi-carrier 2G/3G/4G LTE support with SIM card slot

Cellular/WAN RJ45/WiFi client failover and Load Balance (Bandwidth link bonding)

Supports LTE Advanced with SIM-based auto-carrier selection

Cloud-managed (with NMS network management system), TR-069, Web management, SMS, SSH/Telnet/Command, SNMP

WiFi (802.11 a/b/g/n, 2.4Ghz)

Certified 3G/4G/LTE enterprise/industrial grade internal modems

Built-in transient and reverse polarity voltage protection, over-current and over-voltage protection;

5-40V DC voltage input range (5-60V DC option), Dual Power Inputs / Power Failover;

POE (Power over Ethernet)

GPS / GNSS support

Serial Port

DI/DO port * 4

Supports Ethernet (T1, DSL, Cable, MetroE), WiFi as WAN, and Metro WiFi

Ruggedized to ensure always-on connectivity

Create real-time alerts to monitor uptime

Offer secure, guest WiFi to passengers

Advanced security, VPN, and stateful firewall to protect sensitive data

Robust Metal Case is ruggedized for vibration, shock

Desktop, Wall-mount and Din-rail mount of installation

External antenna connectors for high gain antennas replacement

MIMO supported

 

All E-Lins communication terminals can be connected to the E-Lins remote managing and controlling platform (NMS), which brings the generous devices scattering in different areas to carry out concentrate monitor, configuration, updated, diagnose, maintenance, manage and control. Highly reduce the maintenance costing in the operator, integrator, devise supplier etc, increase the managing efficiency.

What is a single/dual frequency wireless 4G router

Category : 产品文章

1. Introduction to “single frequency” router

The single-frequency router only works in the 2.4ghz band, which is generally supported by wireless terminals. However, the 2.4ghz band has large interference, which may affect the wireless rate and stability.

 

2. Introduction to “dual-frequency” router

Dual-frequency router works in two frequency bands of 2.4ghz and 5GHz, with less interference in 5GHz band. Currently, more and more mobile phones, laptops and other terminals in the market support 5GHz band (if all terminals at home do not support 5GHz band, it is recommended to choose single-frequency router; If you have a terminal that supports 5GHz band, it is recommended to choose a dual-frequency router for better wireless network speed experience.

 

Second. The difference between single/dual frequency wireless routers

The differences between single and dual frequency wireless routers mainly focus on signal range, transmission power, stability and anti-interference.

1. Compared with single frequency, dual frequency has a wider signal coverage. Dual-band wireless routers are more suitable for the complex structure of the house.

2. Dual-frequency wireless routers are more stable than single-frequency wireless devices.

3. Dual frequency wireless router has strong anti-interference performance.

 

Third. Choose “single frequency” or “dual frequency” for wireless router

As the name suggests, dual-band mainly refers to two types of wireless frequency bands: 2.4GHZ and 5GHZ, respectively. Compared with our ordinary router, 5G frequency band is added. Why do we need to add 5G frequency band?

 

In the 2.4ghz band, there are wireless buttons and mice, wireless earphones, bluetooth devices, etc., which also make this band very crowded. Moreover, it is equivalent to a good road, but there are too many cars, which start to cause serious congestion. Therefore, when using the wireless router working in the 2.4ghz band, we will often find that there are problems such as poor wireless signal, network congestion and frequent dropping of the line. There are a lot of household appliances in use will produce 2.4G interference, refrigerator, computer, microwave oven, electric cooker and so on, microwave oven is undoubtedly the most serious interference to wireless signal electrical appliances, so in the layout of the router, we should try to avoid all kinds of home appliances.

 

 

 

There will be interference within the same region, and in general, it will be difficult to get a perfect experience at 2.4g. . At that time if you choose 5 GHZ band patterns will be effective to avoid the spectrum signal interference, a corresponding transmission of wireless signal further, besides dual-band router in the family, almost no other things have a 5 g signals, and in the 5 GHZ frequency band, the mutual interference of channel working 22, considerably more than the mutual interference of 2.4 GHZ channel number. Like a 3-lane highway or a 22-lane highway, which is more accessible is self-evident.

 

 

 

In a word, dual-band routers, although usually more expensive, are definitely better than single-band (2.4ghz) routers. In terms of performance, dual-band routers are much stronger, with more stable signals, wider coverage and stronger penetration.

 

E-Lins has dual band routers H700&H820Q:

 

Among them, H700 is a more comprehensive product. The H700 series Cellular Router is designed for establish a 2G/3G/4G cellular wireless network and share a cellular broadband internet connection. The H700 series Cellular Router enables users to quickly create a secure Wi-Fi (802.11 b/g/n) network and provide access to the internet using a cellular network. By connect to cellular broadband network; an internet connection can be accessed and shared virtually anywhere within a wireless broadband network.

 

E-Linsmobile data products are widely used in more than twenty industrial fields, such as power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other areas.

 

H700 series support single module dual sim cards or dual module dual sim cards

A1) work with one sim card.

A2) work with two sim card. Two sim card backup each other (cold standby for failure backup).

 

 

Main:

Built-in 2G/3G/4G industrial cellular module, insert SIM/UIM card to work directly;

Built-in two sim card slots;

RJ45 LAN *4;

RJ45 WAN *1;

DB9*1

USB3.0*1

Terminal socket GPIO*1

SD card slot*1

 

Option feature:

1.WiFi

2.GPS

3.Serial to cellular gateway (RS232 or RS485 port)

4.DIO

 

Redundancy backup: cellular1+ cellular 2+ WAN RJ45

Industrial Application:

lRemote Data Monitor and Control

lCCTV, security surveillance

lWater, gas and oil flow metering and schedule

lAMR (automatic meter reading)

lPower station monitoring and control

lRemote POS (point of sale) terminals, ATM

lTraffic signals monitor and control, Traffic info guidance

lOil field, weather forecast, environmental protection, street lamp monitoring and control

lEarly Warning of Mountain Torrent

lFleet management

lPower distribution network supervision

lCentral heating system supervision

lWeather station data transmission

lHydrologic data acquisition

lVending machine

lTelemetry, SCADA

lVehicle logistics and diagnostics controlling

lParking meter and Taxi Monitor

lTelecom equipment supervision (Mobile base station, microwave or optical relay station)

Wireless communication DTU features

Category : 产品文章

Data Transfer unit (DTU) is a wireless terminal device specially used to convert serial Data into IP Data or convert IP Data into serial Data for transmission through wireless communication network.

 

DTU advantages:

Rapid and flexible network, short construction cycle, low cost; Wide network coverage; Good security and confidentiality;

 

 

Functional features:

 

1. Internal integration of TCP/IP protocol stack

 

GPRS DTU internally encapsulates PPP dial-up protocol and TCP/IP protocol stack and has an embedded operating system. From the perspective of hardware, it can be seen as the combination of embedded PC and wireless GPRSMODEM. It has the function of GPRS dial-up Internet and TCP/IP data communication.

 

2. Provide bidirectional conversion of serial data

 

GPRS DTU provides serial communication interface, including RS232 and RS485, RS422, etc are the commonly used serial communication mode, and GPRS DTU serial data into mostly on the design “transparent conversion” approach, that is to say, GPRS DTU can transform a serial port on the original data into TCP/IP packet transmission, and don’t need to change the original data communication content. As a result, GPRS DTU can be connected to a variety of user devices that use serial communication, and no changes are required to the user devices.

 

3, support automatic heartbeat, keep online forever

 

Is one of the advantages of GPRS communication network support GPRS terminal equipment permanently online, so typical of GPRS DTU are designed to support the permanent online function, which requires the DTU contains the heartbeat packets on electric automatic dialing, use to maintain permanent online (when long time data communication, mobile gateway connect DTU disconnected from center, heartbeat packets is DTU with data center to send a small data before the connection is disconnected, to keep connection is disconnected don’t), automatic reconnection, the bolt support automatic dialing, etc.

 

4, support parameter configuration, permanent save

 

As a kind of communication equipment, GPRS DTU is widely used. In different applications, the data center IP address and port number, serial port baud rate are different. Therefore, GPRS DTU should support parameter configuration and save the configured parameters in internal permanent storage devices (generally FLASH or EEPROM, etc.). Once powered on, it will automatically work according to the set parameters.

 

5. Support setting of user serial port parameters

 

The serial port parameters of different user devices are different. When DTU connects the serial port of user devices, the DTU terminal should be set according to the actual parameters of the serial port of user devices to ensure the normal communication and reliable data transmission of user devices.

 

Working process:

 

GPRS DTU initiates a TCP or UDP communication request to the data center through parameters such as the IP address of the data center (if the domain name of the data center is used, the IP address of the center will be resolved through the domain name of the center) and port number. Upon receiving the response from the center, GPRS DTU is deemed to have successfully shaken hands with the center, and then the communication connection is maintained. If the communication connection is interrupted, GPRS DTU will immediately shake hands with the center again. Now that the TCP/UDP communication connection has been established, data two-way communication is possible.

 

Application:

Power industry, water conservancy industry, oil industry, municipal industry, environmental protection industry, agricultural application, etc.

 

As Industrial grade router, the E-Lins H685 series 4G router with Ethernet is a compact, ruggedized 3G/4G/LTE cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.

In addition to the robustness, reliability, security, friendly-using, the H685 4G router with Ethernet is competent to be engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, AMR, vehicle, retails, vending machines, power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other fields.

The advantage of using wireless data transmission module in industrial control system

Category : 产品文章

Data transmission can be simply divided into two major types: wired (including the installation of optical cables, cables or leased telecommunication lines) and wireless (including the establishment of dedicated wireless data transmission system or the borrowing of CDPD, GSM, CDMA and other public network information platforms).

 

 

In comparison, the wireless data transmission mode with wireless data transmission module has the following advantages over other modes. The following describes the advantages of the wireless data transmission mode with wireless data transmission module compared with the wired communication mode.

 

 

1. Wireless communication is cheap

 

The establishment of wired communication means must erect cables or excavate cable trenches, which requires a lot of manpower and material resources. The use of wireless data stations to establish a dedicated wireless data transmission mode does not require the erection of cables or trenching, but only the connection of wireless data stations at each terminal and the erection of antennas at the appropriate height. Compared with the wireless data transmission module to establish a dedicated wireless data transmission mode, saving manpower and material resources, investment is quite economical.

 

 

Of course, in some short-range data communication systems, wireless communication is no cheaper than wired, but sometimes the actual field environment is difficult to wire, customers will choose wireless communication according to the needs of the field environment.

 

 

2. The construction period of wireless communication is short

 

When within a few kilometers to tens of kilometers distance to a remote site connection communication each other, with the method of cable, must set up a long cable long in cable trench, or mining may need several months the project cycle time, and with digital module build special-purpose wireless data transmission way, only need to set up appropriate height of antenna, the project cycle, only need a few days or weeks can, by contrast, can quickly establish a wireless way communication link, shorten the project cycle.

 

 

3. Good adaptability of wireless communication

 

Limitations of wired communication is too large, in case of some special applications, such as mountains, lakes, forests and other special geographical environment and the application of moving object, such as wiring difficult environment, to the wired network wiring project has extremely strong further reading.in, wireless data transmission module and establishing special will not be restricted by the wireless data transmission mode, so in wireless data transmission module build special-purpose wireless data transmission way to more extensive adaptability than the wired communications have better, almost without being limited by the geographical environment.

 

 

4. Good scalability of wireless communication

 

After users set up a communication network, new devices are often added for the needs of the system. If adopt the way of the cable, need to wiring, construction more troublesome, but also could undermine the original communications lines, but if the special set up by adopting the wireless digital radio wireless data transmission way, just put the new devices connected to wireless digital radio can realize the system expansion, in contrast with better extensibility.

 

 

5. Wireless communication equipment maintenance is easier to achieve

 

The maintenance of wired communication link requires the inspection along the line. In case of failure, it is difficult to find out the fault point in time. However, the establishment of dedicated wireless data transmission mode by adopting wireless data transmission module only requires the maintenance of data transmission module.

 

E-Lins mobile data products covers 4G/3G/2G/WiFi routers, modems, CPE, and other data transmission devices, which are widely used in more than 150 countries and regions, and more than twenty industrial fields, such as power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank, CCTV, security surveillance, and many other areas.

As Industrial grade router, the E-Lins H685 series 4G router with Ethernet is a compact, ruggedized 3G/4G/LTE cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.

In addition to the robustness, reliability, security, friendly-using, the H685 4G router with Ethernet is competent to be engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, AMR, vehicle, retails, vending machines, power control, water schedule, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other fields.

Highlight of H685 Mini size router:

Multi-carrier 2G/3G/4G LTE support with SIM card slot

Cellular/WAN RJ45/WiFi client failover

Supports LTE Advanced with SIM-based auto-carrier selection

Cloud-managed (with NMS network management system), TR-069, Web management, SMS, SSH/Telnet/Command, SNMP

WiFi (802.11 a/b/g/n, 2.4Ghz)

Certified 3G/4G/LTE enterprise/industrial grade internal modems

Built-in transient and reverse polarity voltage protection, over-current and over-voltage protection;

5-40V DC voltage input range (5-60V DC option), Dual Power Inputs / Power Failover;

POE (Power over Ethernet)

GPS / GNSS support

Serial Port

DI/DO port * 4

Supports Ethernet (T1, DSL, Cable, MetroE), WiFi as WAN, and Metro WiFi

Ruggedized to ensure always-on connectivity

Create real-time alerts to monitor uptime

Offer secure, guest WiFi to passengers

Advanced security, VPN, and stateful firewall to protect sensitive data

Robust Metal Case is ruggedized for vibration, shock

Desktop, Wall-mount and Din-rail mount of installation

External antenna connectors for high gain antennas replacement

4g router features of E-lins Technology

Category : 产品文章

With the development of new communication technologies and the continuous improvement of network efficiency and function of wireless communication, 4G has been widely used. 4G industrial-grade wireless routers are playing an increasingly important role in the applications of various industries, and the price is getting cheaper and cheaper. Currently, there are a lot of optional devices in the market, so how to choose one that can guarantee long-term use, stability and reliability, and affordable price is the problem that customers think about the most. The following is a specific selection reference for the 4G industrial wireless router of E-lins technology.

 

I. Industrial-grade design

1. Adopt high-performance industrial-grade 32-bit processor and adopt qualcomm chip, the world’s top wireless solution, with high processing speed, low power consumption, low heat output, strong compatibility and more stable, which can meet the requirement of 365 days a year, 7*24 hours long and stable operation without dropping the line.

2. Adopt high-performance industrial-grade communication module and high-quality communication module of huawei and other first-tier brands, with strong reception ability, stable signal and faster transmission.

The operating system uses OpenWRT, a highly modular, highly automated embedded Linux system, which makes the device more stable, has a large capacity of Flash and memory, and can support the requirements of customized development. High quality PCB circuit boards are manufactured with high quality materials and high standard. Stable industrial components are used for product components. All the machines are automated to realize patch production, ensuring the stability and reliability of the products. The power supply adopts wide voltage design to support dc5v-40v, with built-in anti-phase protection and over-voltage and over-current protection of the power supply, which can withstand the impact of instantaneous high voltage and current. Ethernet USES gigabit network port, built-in electromagnetic protection Ethernet interface built-in 1.5kv electromagnetic isolation protection, gigabit network port, faster transmission speed. The shell with strong anti-interference ability adopts thickened metal shell, shielding electromagnetic interference, and the equipment protection grade IP34, which is suitable for use in harsh industrial environment.

 

II. Powerful function

 

Multi-mode multi-card, load balancing

Expand network equipment and server bandwidth, increase throughput, enhance network data processing capacity, and improve network flexibility and availability.

 

Support global network formats

Support 2G, 3G and 4G networks of the three major domestic operators, or support Europe, southeast Asia, Africa, Latin America and other countries.

 

Support wired wireless backup

WAN port and LAN port can be flexibly switched to support wired and wireless backup of WAN port, with wired priority and wireless backup.

 

Serial transmission

Support simultaneous RS 232/485 serial port transmission.

 

Support APN/VPDN special network card, support a variety of VPN support APN/VPDN special network card use, at the same time support PPTP, L2TP, Ipsec, OpenVPN, GRE and other VPN.

 

Powerful WIFI function

WIFI supports 802.11b/g/n, WIFI AP, AP Client, repeater, relay bridge, WDS and other working modes, 802.11ac, or 5.8g (optional).

 

Support IP penetration function can achieve the IP address of the host IP obtained for the router, which is equivalent to the host directly plugging in the card to dial up the Internet to obtain the IP of the base station.

 

VLAN virtual LAN division through the division of VLAN, enhance the security of the LAN, VLAN technology, can be different locations, different networks, different users together, forming a virtual network environment. Support QOS, bandwidth speed limit support different network port bandwidth speed limit, IP speed limit, total bandwidth speed limit. Support DHCP, DDNS, firewalls, NAT and the function such as DMZ host support ICMP, TCP, UDP, Telnet, FTP, HTTP, HTTPS and network protocol support time to restart, SMS control, GPS/beidou positioning function (optional), support M2M cloud platform management, mobile monitoring and WEB monitoring, device data monitoring, traffic limit function, push resources, statistics, the remote device management (remote restart, WiFi switch), remote parameter modification, traffic restrictions, GPS tracking trajectory.

 

III. stable and reliable

1. Support hardware WDT watchdog, provide anti-dropping mechanism, and ensure that the data terminal is always online.

2. Support ICMP detection and traffic detection, automatically restart the equipment if network abnormality is found in time to ensure the stability and reliability of the system in long-term use.

3. Industrial-grade design, metal shell, anti-interference, anti-radiation, 95% humidity, no condensation, high temperature and low temperature resistance, minus 30 degrees to 75 degrees high temperature can work normally.

4. Our products have passed CCC certification, European CE certification and other certifications

 

Simple operation, easy to use

1. Simple Internet access, push-stick user card interface, insert mobile phone card/Internet of things card/special network card, and you can use the network port and WIFI after power on.

2. Support software and hardware to restore factory Settings, software can clear parameters, hardware RST one-key to restore factory Settings.

3. Product quick operation manual, WEB menu-type page, can quickly set up the device for use.

4. Diagnostic tools: log download and view, remote log record, ping detection, route tracking, easy to detect device information.

工业路由器NBMA网络转化为点到点的链路

Category : 产品文章

当我们使用点到点子接口将NBMA网络转化为点到点的链路时,整个NBMA网络将产生过多的PVC部分互联或全互联的网状结构,但这将产生一定的负面影响,会使网络中产生大量的LSP泛洪流量。我们都知道,运行IS-IS的工业路由器当接收到一个LSP报文后,会将此LSP从除接收接口以外的所有启用了IS-IS协议的接口泛洪出去,以使网络中的其他工业路由器都可以接收到此LSP。但是这种泛洪机制对于存在大量部分互联或全互联的网络将产生过多冗余的LSP扩散。

所谓全互联或全网状网络拓扑,是指所有工业路由器都与其他工业级无线路由器向连接(通常是点到点子接口)。在这样的一个网络中,当一台路由器从某接口收到邻居泛洪过来的LSP后,由于它并不知道这个LSP是否已经被其他邻居工业4g路由器收到,所以会再从其他接口泛洪出去,即使其他工业级4g路由器的链路状态数据库中已经存在这个LSP。如果网络中有n个全网路由器的话,那么网络中的每台工业级LTE路由器都会扩散n-2条冗余的LSP,这样总共被泛洪的多余的LSP将为(n-1)x(n-2),条而这些LSP的扩散是多余。如果每台工业全网通路由器都刷新一条LSP的话,那么这个数量还将会成倍数的增长,导致了大量带宽资源的浪费。

为了解这种在全互联或高度互联的网络中出现的LSP泛洪的冗余现象,IS-IS提供了一种解决方案——IS-IS全通组,也称作Mesh组。IS-IS全通组在RFC2973中进行了定义。所谓全通组,就是假设所有工业3G路由器之间都是完全互联的,每个工业级全网通路由器都会直接收到其他全网通工业级路由器泛洪的原始的LSP的拷贝。

可以将全网工业路由器的接口加入到某个全通组中,一个全网通工业路由器上可以存在多个全通组,全通组内接口之间的LSP泛洪是受限制的,全通组之间的LSP泛洪是正常的操作,未加入全通组的工业级3G路由器接口与全通组之间也是正常的LSP泛洪操作。全网通路由器  无线路由器