Compact PCI is transformed on the basis of PCI technology, and has the characteristics of openness, high reliability, and hot-swappability. Compact PCI industrial computer can build a high-availability system, which is suitable for communications, network, finance, rail transit, medical equipment, self-service terminals and other industrial fields that require high reliability and long-term use, as well as real-time system control, industrial automation, real-time data collection and other fields that require high-speed computing.
Compact PCI uses pinhole bus connectors, and compared to PCI cards with gold finger connectors, they have the characteristics of a secure connection, completely hermetically sealed, and the cards are highly resistant to vibration and corrosion. In addition, the Compact PCI card adopts a straight installation and front extraction structure, which improves the heat dissipation, vibration resistance and easy protection of the industrial computer. The details have the following characteristics:
1. The system has strong vibration resistance. The Compact PCI card is held in place by rails at the top and bottom, and the front end of the card is connected to the backplane by an airtight pinhole connector, and each connector has a strong bonding force. The card can be screwed to the chassis of the IPC. The front and back of the Compact PCI card are fixed to the top and bottom, so the system is highly vibration-resistant.
2. Support the card to be plugged and unplugged with electricity. The Compact PCI backplane uses a short, medium and long pin structure, with the Power and Ground pins being the longest, to ensure that the card is securely inserted and unplugged. In addition, the board selection signal IDSEL, BD_SEL the shortest pin, allows the system to know whether the card is in the process of piercing or unplugging. In addition, Compact PCI has developed a hot-swappable hardware process and software management interface to ensure the effectiveness of the hot-swap process.
3. The wiring after the support is convenient for convenient wiring. Compact PCI's card signal cables do not need to be led out of the front panel of the card, but can be routed through the backplane and out of the back end using an adapter plate. When replacing a card, there is no need to replace the signal line, which reduces the workload of replacing the card and reduces the probability of making mistakes caused by replacing the signal line.
4. The card is installed straight, which is conducive to heat dissipation. The Compact PCI card adopts the European card structure, which is installed straight, and the heat dissipation airflow of the system blows from the bottom to the top, which is in line with the principle of air convection, and the heat dissipation effect of the industrial computer is better.
5. Compact PCI card has better electrical characteristics. The Compact PCI backplane pins and connectors are all gold-plated, and the maximum length of the signal line, the impedance of the PCB, the decoupling capacitance, and the resistance of the PCI pull-up resistor are strictly demarcated. Therefore, the electrical characteristics of Compact PCI are better than those of PCI industrial computers.
6. Good anti-corrosion and electromagnetic shielding. The Compact PCI uses pinhole bus connectors, which cannot be corroded by salt spray, acid mist, and charged dust. In addition, Compact PCI's all-aluminum chassis housing and card's U-shaped spring blades provide outstanding electromagnetic shielding protection.
7. Good antistatic. The Compact PCI card has an electrostatic export strip on the lower end, which allows static electricity to be exported to the floor. In addition, the Compact PCI rule system is logically isolated from the chassis of the industrial computer to keep the system free from external interference. However, the IPC according to PICMGl.0 cannot achieve the isolation of the chassis and the logic.
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