Integrated fiber optic transmission equipment for road checkpoint vehicle monitoring system

Integrated fiber optic transmission equipment for road checkpoint vehicle monitoring system

At present, many factories and parks manage and register the entry and exit of freight vehicles, including taking photos of the front, rear, carriage, and panoramic view of the vehicle for archiving, and using a truck scale for vehicle weighing. Some even issue cards at the entrance and implement one card management. The vehicle's driving license and driver information are photographed and recognized, and the conversation between the security personnel and the driver is also recorded in real-time in the system.

At present, some cameras have automatic recording, recognition, and recording functions, but for this multi camera system, there are some shortcomings such as high cost and limited capacity.

The characteristics of these systems include manned duty, slow vehicle speed, sufficient lighting, one camera per lane, and a large number of lane cameras. Therefore, they do not require supplementary lighting, high-definition cameras that can monitor multiple lanes, or low latency in image transmission processes. We adopt a solution of centralized processing and storage of data, transmitting all voice, data, and image data to a data processing center with better conditions in the data center. Due to the large amount of data, 100M or even 1000M fiber optic communication should be used.

Lane equipment configuration:

1. Automobile scale electronic scale (Rs232, RS485 interface),

2. Infrared trigger (Rs232, RS485 interface), used for the linkage shooting of three cameras.

3. High speed scanner, used for scanning and identifying driver's licenses, driving permits, delivery notes, QR codes, etc. Connect the computer through a USB port.

4. Emergency intercom system, voice communication equipment, used for duty officers to make emergency button calls, or for service quality supervision, voice recording, etc.

5. Surveillance cameras, in order to clearly identify license plates, should use cameras with 2 to 300 million pixels.

6. LED guidance display board, used to display prompt information for drivers and auxiliary security personnel, RS485 interface,

7. Barrier gate control system, used to control lane railings, RS485 interface

8. Lighting control system, automatic control of lighting, energy saving, RS485 interface.

1.                      Solution 1: IDM NTD421 Dual Physical Isolation Ethernet Solution

Assuming that all serial devices in the figure use RS485 interfaces. If using the Rs232 interface, an RS232/RS485 converter can be used.

All trigger photography functions are processed and controlled by the server, or can be controlled by the local computer.

IDM NTD421 provides an RS485 channel, which is converted into an Ethernet interface and connected to a computer through the serial server disk on G3CP at the central end. Various serial port terminals can be distinguished through the RS485 bus protocol.

Two voice channels are connected to the central end through the audio interface (which can be a telephone port or a pure tone frequency port) on IDM NTD421.

IDM NTD421 provides 4 Ethernet interfaces, with 1 to 3 ports sharing 100M bandwidth and 4 ports enjoying 100M bandwidth exclusively. It is suitable for applications that require 2 sets of physically isolated Ethernet.

2.                      Option 2: IDM POE-M08+Dual Port Gigabit Switch Mode

The IDM POE-M08+Gigabit Ethernet switch can provide up to 8 Ethernet switches with POE power output, with 3 Gigabit optical port directions, which can form a star Ethernet network.

IDM POE-M08+can be configured with 4 serial port server modules, providing conversion from RS232 serial port to Ethernet, which is more suitable for monitoring on-site use.

IDM POE-M08+can also be configured with 2 telephone gateway interfaces, which can provide IP access for telephone or voice, making it more suitable for remote use in offices and with people on duty.

IDM POE-M08+can be configured with remote power supply function, with a maximum single power supply capacity of 15W.

IDM POE-M08=Multiple 3 Gigabit Fiber Optic Transceivers+3 Gigabit Access 8-Port 100Mbps Ethernet Switch+POE Remote Power Supply Module+4 Port Serial Server (Option)+2 Port VOIP Telephone Gateway (Option). It is a highly integrated Ethernet remote access device that eliminates the need for interconnection between different devices and multiple power modules. It is an ideal device for remote IP access.

In the above figure, business aggregation is achieved through a 10GESW full fiber Ethernet switch on G3CP, which provides 10 Gigabit Ethernet optical ports and can access 10 remote devices.

IDM G3CP can also be equipped with a SIP protocol softswitch system, which can provide access to fixed telephones (with 32 concurrent channels) and registration and services for remote softphones. If connected to the dispatch console, it supports telephone dispatch function.

In this scheme, if multiple physically isolated Ethernet networks need to be provided, multiple fiber optic transceivers will be used, and multiple fiber optic cables will be rented or wavelength division multiplexing technology will be used.

3.                      System Function Description

The local processing of lane content, including scanning and recognition of driver's license, driving license, and delivery note, is handled at the entrance duty booth. Lane lighting control and gate control are processed locally, and weight data and vehicle guidance information are managed through centralized services.

Multimedia server functions: image storage, retrieval, license plate recognition, etc. Due to the large amount of data storage, a separate server is generally used.

Database server function: All vehicle data is stored on this server, and various calculation results are published in real-time to each intersection, prompting the weight of the vehicle, the content of the loaded materials, etc., and prompting lane personnel to check the corresponding procedures. When the time, loading content, load capacity, driver information, etc. are incorrect, the system automatically locks the gate.

The conversations between the duty personnel at the intersection and the driver, as well as the conversations at the emergency dispatch center, are all transmitted to the central end for recording and storage. When the duty personnel press the intercom button, they can speak to the dispatch center personnel, and the dispatch center can also monitor the service quality of the duty personnel at the intersection at any time.

This plan is applicable to the security management and loading management of large freight yards, docks, factories, etc.