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1394b optical bus monitor and monitoring method thereof

A technology of bus monitor and optical bus, applied in electromagnetic wave transmission system, digital transmission system, electrical components, etc., can solve problems such as system status monitoring, achieve low power consumption, increase real-time display, and small size

Inactive Publication Date: 2012-08-15
BEIHANG UNIV
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Problems solved by technology

This method is used in the verification process of the system design, but it cannot monitor the system status when the system is running normally

Method used

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  • 1394b optical bus monitor and monitoring method thereof
  • 1394b optical bus monitor and monitoring method thereof
  • 1394b optical bus monitor and monitoring method thereof

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Embodiment Construction

[0026] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0027] The invention proposes a 1394b optical bus bus monitor and its monitoring method. The 1394b optical bus protocol defines three protocol layers: physical layer, link layer and transaction layer. The transaction layer is used to generate or process transaction information; the link layer realizes the conversion between data packets and transactions; the function of the physical layer is to arbitrate the bus, transmit data and receive data. Since the 1394b optical bus is a broadcast-type bus protocol, no matter the destination address of the data packet is any node, the physical layer can obtain all data packets on the bus and send them to the link layer, and the link layer analyzes whether the node is Target node and process. Based on the above characteristics and the task characteristics undertaken by the bus monitor, the present invention prop...

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Abstract

The invention provides a 1394b optical bus monitor and a monitoring method thereof, belonging to the technical field of 1394b optical buses. The bus monitor comprises a 1394b physical layer chip, an FPGA (Field Programmable Gate Array) module, a photoelectric conversion module and a storage, wherein the photoelectric conversion module realizes photoelectric conversion between a signal of an optical interface and the serial electric signal of the 1394b physical layer chip through impedance matching; and the bus monitor is connected into the 1394b optical bus by the optical interface; the 1394b physical layer chip decodes the received serial electric signal and transmits a data packet and state information to the FPGA module; and the FPGA module records and stores the data packet and state information in the storage. The bus monitor provided by the invention is simple in structural design, low in power consumption and small in volume. The bus monitor has configurable working mode, can be designed for recording all businesses or conducting record only when data transmission and node state are failed according to system needs.

Description

technical field [0001] The invention belongs to the technical field of 1394b optical bus, in particular to a bus monitor of 1394b optical bus and a monitoring method thereof. Background technique [0002] In military applications and space applications, the 1394b optical bus has attracted widespread attention due to its advantages in high bandwidth, flexible topology, and strong anti-interference ability. It is used in various distributed systems with multiple nodes and multiple tasks. [0003] In the distributed system, each node cooperates with each other to execute system tasks, and the 1394b optical bus provides a transmission channel for information synchronization and data exchange between nodes. In order to realize the correct execution of distributed system tasks, it is necessary to ensure that the interconnected nodes in the distributed system can transmit data correctly. Therefore, it is very necessary to supervise and manage the data transmission on the 1394b opti...

Claims

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Application Information

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IPC IPC(8): H04B10/08H04L12/26H04B10/077
Inventor 伊小素王明张春熹龙映雪朱榆涵
Owner BEIHANG UNIV
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