Hot plug device and method based on AT96 bus

A hot-swapping and bus technology, applied in the field of reactor instrumentation and control, can solve the problem that the AT96 bus does not support the hot-swapping function of functional boards, and achieve the effect of improving the ability of timely recovery

Inactive Publication Date: 2018-05-18
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the AT96 bus itself does not support the hot-swap function of functional boards, so a hot-swap design is required to achieve the above requirements

Method used

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  • Hot plug device and method based on AT96 bus
  • Hot plug device and method based on AT96 bus

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Embodiment Construction

[0025] The invention provides a hot plug device and method based on the AT96 bus, which realizes the removal and replacement of damaged functional boards without shutting down the system or cutting off the power supply, thereby better improving the recovery and expansion capabilities of the system.

[0026] In order to be able to understand the above objectives, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other if they do not conflict with each other.

[0027] In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the scope described here. Therefore, the prote...

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Abstract

The invention discloses a hot plug device and method based on an AT96 bus. The device comprises a CPU (Central Processing Unit) board card, a backboard and a functional board card, wherein the backboard is provided with the physical layer of the AT96 bus; the CPU board card finishes controlling the functional board card through a backboard AT96 bus; the functional board card is provided with an AT96 connector, a control circuit and rest circuits; and the AT96 connector is provided with a power supply pin, a signal pin and a Key pin, wherein the length of the power supply pin, the signal pin and the Key pin is in a descending order. In a process that the functional board card is inserted, the power supply pin, the signal pin and the key pin finish electrical connection in sequence. In a process that the functional board card is pulled out, the key pin, the signal pin and the power supply pin are successively separated from the electrical connection, and the timely recovery ability, theexpansibility and the flexibility for disasters can be improved.

Description

Technical field [0001] The invention relates to the field of reactor instrumentation and control, and in particular to a hot plug device and method based on the AT96 bus. Background technique [0002] At present, the nuclear power reactor I&C system has gradually realized digitization, and its essence is the application of a universal digital I&C platform in different professions. The CPU board in the digital instrument control platform conducts close data interaction with each functional board through the AT96 bus on the backplane to achieve different functional requirements. AT96 bus is an industrial computer bus standard initiated and formulated by German Siemens. It is compatible with ISA bus technology, adopts PC's Wintel architecture, has strong impact resistance, reasonable mechanical structure, is suitable for industrial field use, and is easy to maintain. [0003] The CPU board in this system controls each function board through the AT96 bus to obtain data or issue comman...

Claims

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Application Information

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IPC IPC(8): G06F13/40
CPCG06F13/4081
Inventor 陈杰冯威叶奇韩文兴叶常青青先国
Owner NUCLEAR POWER INSTITUTE OF CHINA
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