A high-speed data buffer apparatus and method

Abstract

The invention discloses a high-speed data buffer device and a method. The device comprises a first-level device and a second-level device. The first level device is connected with the second level device through a parallel bus; The first-level device is provided with a first-level buffer area. The first-level device is used for receiving data sent by a data source, buffering the data to the first-level buffer area, and sending the buffered data to the second-level device through the parallel bus. The first-level device is used for receiving the data sent by the data source and buffering the data to the first-level buffer area. The second level device comprises a first processing core, a second processing core, a second level buffer area and a third level buffer area; The first processing core and the second processing core share the secondary buffer area; The first processing core is used for storing the data sent by the first-level device to the second-level buffer area. The second processing core is configured to store data in the secondary buffer area to the tertiary buffer area. The invention has the advantages of high real-time performance, fast buffer speed and good stability.

Description

technical field [0001] The invention relates to the technical field of high-speed data caching, in particular to a high-speed data caching device and method, and is especially suitable for caching high-speed data of converters. Background technique [0002] In the converter control system, the switching frequency of the power electronic device is high, and the voltage and current change rate during the turn-on and turn-off process of the device is very large; there are many sensors in the system to collect the voltage and current of the converter in real time, etc. High-speed, real-time data; analyzing the data of power electronic devices and sensors is of great significance for the research on the health status and life of devices in the converter system. [0003] The status data of power electronic devices has the characteristics of high real-time performance (the rate reaches nanoseconds) and large data volume (a converter module has multiple devices, about 30 pieces of d...

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Problems solved by technology

[0004] In the converter control system, common data caching methods include data structures such as hash tables, linked lists, and ring buffers. In the converter control system, due to the small memory space and the limited processor operation speed, these schemes are used to cache The data has a serious waste of storage space and low real-time performance. It is feasible for caching slow and non-real-time data, but not feasible for caching high-speed real-time data (speed reaches microsecond level).

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