Cell Modem and Router for Scalable digital signage solutions

Cell modem and router is the cellular device with USB/RS232 port or RJ45 ports. With cell modem and cell router, users and system intergrators can build network via cellular wireless network without cable lines.

Now here is a solution with the cell modem and cell router for short information.

Many industries benefit by delivering messages to their customers through digital signage including retail, leisure, hotels, finance and transport. It conveys data such as road traffic congestion, parking directions and passenger information for bus, rail and taxis to ease the decision-making process. Furthermore, digital signage technologies such as video, TFT, LCD, LED and VFD provide ideal mediums for advertising and promotional activities for generating new revenue opportunities.

Business Challenge
Lack of accurate and up-to-date information often compounds problems and increases frustration. Examples include traffic congestion and road incidents where early warnings help to direct traffic away from problem areas. In many cases, "content" needs to be delivered in response to real-time events such as parking availability, bus arrival times and excessive vehicle speeds. Delivering strategic messages to digital signage enables passengers, customers, staff and the public at large to make better decisions. Advertising and promotional opportunities exist for retailers and brand owners. These are especially powerful where there is a captive audience e.g. public transport and retail queues, taxis and public conveniences. Key issues lie with fast updates to remote and mobile locations, especially where they are not easily accessible or in dangerous locations such as track & roadside. 

Scalable digital signage solutions
Video, graphic and text signs support proprietary protocols at TCP/IP, serial or Ethernet level. Communication can be added to digital signage using a modem which offers simple remote access or perhaps a router for an Ethernet networked device.
An Internet enabled modem provides access to FTP download sites and a content delivery system offers a complete solution. Intelligent Internet enabled modems enable legacy equipment to be monitored, which can be scaled to a remote monitoring system solution, where information can be delivered in response to real-time events.

Simply words, the remote device connects the cell modem by USB/RS232 port and the cell router by RJ45 ports. Get a sim card for the cell modem and router, it dialup to the internet network to create the wireless networks.

GPRS/CDMA modem is with RS232 ports. And HSPDA / HSPA modem is with USB port.

Traffic Solution with VPN Router and Cell Modem

Traffic Data Acquisition Application with VPN Router.and cell modem.

If the RTU device support RJ45 ports, then take VPN router. If the RTU is with RS232 or USB port, then take the cell modem.

3G VPN Router is a 3G cellular router with VPN feature, providing PPTP, L2TP, IPSec, GRE VPN tunnels to get a security network connections. Working under 3G networks, and back compatible to 2G networks.

Details:

Traffic Data Acquisition is among one important tasks in ITS. All the on-line or historical data are vital for the design and planning for the traffic management strategy. The traffic data acquisition device normal consists of two parts: the sensor and the controller. The controller links with the central through wire-line connection and send back the data collected from the sensor. However, installation of the wire-line relates to huge engineering efforts and the maintenance of fixed lines has always been difficult. There will be more problems to get wire-line connection in remote areas. When  the communication line goes down, data is lost unless a data Logger is further installed.

In this application, wireless module links with the Traffic Data Acquisition device using RS485 interface. The raw data from the detector is further analyzed by the data protocol analysis mechanism provided by the wireless module and sorted data is transmitted to the central Traffic Control Centre through GPRS network and Internet in TCP/IP packet. Data can be temporarily stored in the memory buffer when GPRS is disconnected. From the system integrator"s point of view, all the integration on the terminal wireless connection is achieved by the plug & play of wireless module and no change is necessary on the original detecting device. And only simple application is required at the central to access the terminal data. The total system implementation is accomplished within 3 weeks.