1、 Equipment appearance

2、 Networking method

GPRSThe foundation of communication is based onIPData is transmitted in the form of packets,GPRSTerminal access to ChinamovingGPRSAfter networking, throughUDP、TCPImplementing data transmission protocols with other computers on the networkData communication. due toGPRSNetwork andINTERNETThere are gateway restrictions between them, resulting in different application solutions.

Option 1: The center adopts a fixed public networkIPAccess.

1The terminal directly initiates a connection to the center, ensuring reliable and stable operation.

2The central data traffic is not restricted.

3The cost of central access is relatively high.

4Due to gateway restrictions, applications initiated by the center to query downwards require heartbeat to maintain routing.

Option 2: The center adopts public network dynamicIPAccess.

Using public network dynamicsIP+DNSAnalysis service.ADSLBroadband services are generally dynamicIPThe customer applies firstDynamic domain name service, with terminals connected using domain addressing methodDNSServer, and thenDNSServer found the central public network dynamicsIPAnd establish a connection.

1It can greatly save on fixed public networksIPThe cost, but stability is limited byDNSServer andADSLAccess method.

2The central data traffic is not restricted.

3The cost of central access is relatively low.

4Due to gateway restrictions, applications initiated by the center to query downwards require heartbeat to maintain routing.

5High daily operating expenses

Option Three: Adopting MobileVPNVirtual Private Network and FixedIP.

The center adoptsGPRS MODEMDial up to access a virtual private network and obtain theIPThe address does not change with location or time, and the terminal also connects to the virtual private network.

1Both the center and the terminal can initiate connections proactively.

2High stability and safety.

3The cost of central access is relatively low.

4Low daily operating expenses.

5The central data traffic is limited.

Option 4: The center adoptsAPNDedicated line, all points are fixed within the internal networkIP

Center through one2M APNDedicated line access to mobile companiesGPRSNetwork, private fixed connection is used between routers on both sides for interconnectionIPAddress for wide area connection, inGGSNThe use of internet routers between mobile companiesGRETunnel. Assign dedicated resources to customersAPN. Used forGPRSThe private networkSIMThe card is only activated for this specific purposeAPN, restrict the use of othersAPNGet itAPNAfterwards, assign mobile internal fixation to all monitoring points and centersIPEnd to end encryption is used between mobile terminals and server platforms to avoid possible information leakage throughout the entire transmission process. Both parties adopt firewalls for isolation and carry out operations on the firewallsIPAddress and port filtering.This scheme greatly improves real-time performance, security, and stability compared to the previous two schemes, making it suitable for application environments with high security requirements, multiple data points, and high real-time requirements. The optimal networking method, subject to financial constraints.

3、 Application scope

4G data transmission module, fully compatible with 4G (China Mobile, China Unicom, China Telecom) and 3G, 2G (China Mobile)Dynamic and Unicom Network is an industrial grade wireless communication product with multiple interfaces, high reliability, and flexible working modes. It is a serial port instrument/The best companion for device networking communication, which can be applied in many fields.

Serial port acquisition: Collect data from serial devices such as flow meters, energy metersPLC, etc;

Wireless communication: through4G/3G/2G wireless network enables device networking;

Support and1-4 remote communication monitoring centers;

SMS alarm: supports sending alarm SMS to mobile phones;

Remote maintenance: Equipment can be remotely maintained and upgraded.

4、 Equipment installation

Installation method: rail type

Installation size: standardDIN-35mmGuide rail fixture

5、 Equipment features

1. The working mode can be set
Real time online, on-demand online (low-power mode), customized for each center;
2. Optional reporting mode
Proactively report and inquire from the center;
3. Automatic switching of communication mode
Support different ports, networking modes (dedicated line or private network), and communication methods (TCP \ UDP \ SMS) for different centers
Addressing method (fixed IP or domain name resolution), communication protocol (transparent protocol or other protocol)
Support local port specification or randomization.
4. Automatic caching of meter reading data to ensure no loss
Built in meter reading buffer, automatic caching of upstream and downstream data, first in first out;
The communication network is temporarily interrupted, but data is not lost.
5. Support private network cloud applications
Realize one-to-one and one to many communication between devices through the Pingsheng private network cloud.
6. Support various configuration software and users to develop their own software systems
Support mainstream configuration software in China, such as Asia Control (Kingview), 3D Force Control, Easy Control, etc.
7. Industrial grade design
Good stability and high reliability.