Distributed integration oscillograph mother board and parallel bus structure

Abstract

The invention discloses a distributed integration oscillograph mother board and a parallel bus structure, belonging to a dynamic oscillographing device system. The mother board is a common active mother board, is provided with a large-scale integrated circuit chip, a control circuit and a sub oscillograph bus slot, and integrates a set of parallel buses which are controlled by corresponding control circuits. The parallel buses include a clock bus, a control bus, a state bus, a timing bus and a reset bus; the control circuits include an automatic detection and signal switching control circuit, a calculation control synchronous circuit, an oscillograph synchronous control circuit, a queue synchronous control circuit, a timing signal processing circuit and a system resetting circuit; and the clock bus is also connected with a clock automatic switching circuit of each sub oscillograph. An RS485 network, an RS422 network and an SPI synchronous series network with priority token rings are integrated on the mother board which is provided with an expending slot so as to form an expending system. By combining the distribution and the integration, the invention realizes strict synchronization of the oscillographs and has the advantages of high reliability, high system capacitance, favorable expandability, wide data transmission communication bands, distributed storage of files and convenient calculation and retrieval.

Description

Technical field [0001] The invention belongs to the field of computer applications, and relates to a computer-processed high-speed measurement and recording system, in particular to a parallel distributed dynamic large-capacity wave recording device. Background technique [0002] The dynamic wave recording device is a digital high-speed measuring and recording instrument. The instrument can perform uninterrupted high-speed synchronous tracking and sampling detection of multiple fast-changing related signals connected externally, so as to capture the instantaneous abnormality, sudden change or occurrence of a specific event of the detected signal, and then analyze all related signals as required Real-time dynamic recording and analysis. Because this instrument can track and record multi-parameter systems for a long time, and automatically capture and find faults or abnormalities of the detected system, it has been widely used in scientific research and various fields of nati...

AI Technical Summary

Problems solved by technology

[0003] 1. Poor reliability

Due to the adoption of a centralized rather than distributed structure, the risk is very concentrated. Once the background computer fails, the entire system will not work normally

[0004] 2. The overall performance is restricted by the system structure and the performance of the background machine

The first is the limitation of system capacity

When the number of measurement channels increases and the data flow increases to a certain extent, the communication between the front-end and back-end machines becomes blocked due to bandwidth limitations

Secondly, the computing power of a single background computer is limited

When the amount of data increases to a certain extent, a single computer cannot complete the tasks of real-time calculation and wave recording

The third is that data remote transmission is affected by bandwidth

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