Because the highway toll system needs to be in the field under high temperature / low temperature, humidity, electromagnetic, dust, vibration and other complex environmental conditions uninterrupted, long-term stable operation, while the system's MTBF> 30000 hours, the system's MTTR <1 hour. It is obviously difficult for commercial PCs to adapt to such conditions. To ensure that the toll collection system effectively fulfills its own charges and monitoring functions, it is only possible to use industrial control computers for system control. The industrial chassis with more moisture-proof, dust-proof, and electromagnetic-proof capabilities is selected. Industrial CPU cards that last longer, adapt to larger temperature ranges and vibration requirements are selected, and various industrial-level control cards and management modules are selected. The products manufactured by North China Industrial Control Co., Ltd., which has been dedicated to research and manufacturing in the industrial control industry, are meeting their requirements.
System Components:
A company in Spain is responsible for the construction of charging systems, monitoring (security) systems, power supply lighting systems, and communication systems through an international bidding process. Among them, the charging system is designed for open charging. The entire charging system is divided into a three-tiered computer management system, namely, a charging center (the management office is located in a toll building), a toll station and a toll lane. The toll center communicates data with the toll station and the toll station computer through a fiber optic transmission system.
The entire charging system consists of three parts: the charging center management system, the toll management system, and the lane charging system. Although we have introduced the entire charging system in three parts, the three are actually an organic whole. The toll center controls the entire toll system; toll stations collect toll lane data and implement data transfer between the toll center and the toll lane; the toll lanes implement the correct lane control system configuration for passing vehicles as required by the toll center as follows:
RPC-208:
1. 8-slot wall-mounted industrial chassis, in line with CE/FCC standard all-steel structure, providing white, gray black and black colors for customers to choose;
2. Provides a 5.25-inch and two 3.5-inch drive positions, and three HDDs can be attached to the drive through hard disk adapters.
3. Cooling system, configure a 80MM high-speed cooling fan with filter cotton, a back-end 80MM power supply fan;
4. The use of standard industrial CPU motherboard NORCO-630V;
5. Power Supply: PW-250 Industrial Power Supply, PW-300/360 ATX Industrial Power Supply
NORCO-630V: The Intel 440BX AGPset chipset is used to provide users with a high-performance, high-security, high-stability industrial computer platform. The card uses Socket370 microprocessor sockets and supports all Intel Pentium III FC-PGA and Intel CeleronTM PPGA370 microprocessors. In terms of system memory, PC66MHz/PC100MHz SDRAM memory is supported, and the capacity can reach 1GB. It also provides other advanced features, such as ESD protection, three-stage Watchdog Timer, and large-capacity DOC (Disk on Chip) function, making the system more perfect. In addition, the motherboard provides AGP display and RS232/422/485 communication port. In addition, this board contains an "invincible lock" that protects the BIOS (to prevent the destruction of current computer viruses such as the CIH), and the user will get a powerful computer system working environment.
CPU: PIII 800
Memory: 64M ECC
Hard Disk: 40G/MOXA-C104
system assesment:
When preparing the construction of the highway systems, the Spanish company fully considered the harsh and complex environmental factors in the area and inspected many manufacturers of industrial control products including the United States and Taiwan. The North China company finally proved its strength and won orders with its excellent performance in the industrial control industry over the years. The entire charging system uses RPC-500 IPC as image processing computer, charge management computer and lane tolling machine; RPC-208 IPC is selected as data processing computer and IC card management computer; RPC-208 PCL-725 eight-channel relay output and light are selected. Isolated digital input card.
Comprehensive evaluation
At present, the system has 56 NORCO industrial PCs that have been continuously working on the expressway for more than one year. It has been highly praised by users, and has also greatly improved the efficiency of merchants, bringing higher profits to merchants. .
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