Method for asynchronously storing massive data generated during high speed video measurement

Patent metadata

Field	Value
Publication number	US-12200396-B2
Application number	US-202217728960-A
Country	US
Kind code	B2
Filing date	Apr 25, 2022
Priority date	Jun 30, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

The present invention relates to a method for asynchronously storing massive data generated during high speed video measurement, the method including the following steps: step (1), constructing a high speed video measurement hardware model; and step (2) realizing asynchronous I/O real-time storage in a high speed solid state disk on the basis of Windows core programming. Compared with the prior art, the present invention solves the problems of incompleteness or frame drop during real-time storage of massive data, and realizes real-time and lossless storage of massive high speed data.

First claim

What is claimed is:

1. A method for asynchronously storing massive data generated during high speed video measurement, comprising the following steps:
step (1), constructing a high speed video measurement hardware model; and
step (2) realizing asynchronous I/O real-time storage in a high speed solid state disk on a basis of Windows core programming,
wherein the step (2) comprises:
step 201 , asynchronous I/O preprocessing process, comprising: step 2011 , providing an absolute path of a file to be stored; connecting a corresponding device by using the absolute path of the file to be stored as a parameter; creating an I/O completion port, and binding the I/O completion port to a started device; pre-sending a write command with four null bytes; setting to start to store data; and starting up a thread to prepare for the cyclic asynchronous I/O process of the massive data;
step 202 , cyclic asynchronous I/O processing process of massive data; and
step 203 , asynchronous I/O stopping-storing processing process.

2. The method for asynchronously storing massive data generated during high speed video measurement according to claim 1 , wherein the step (1) constructing the high speed video measurement hardware model specifically is as follows:
step 101 , constructing an analog data source hardware module;
step 102 , constructing a high speed transmission hardware module; and
step 103 , constructing a high speed storage hardware module.

3. The method for asynchronously storing massive data generated during high speed video measurement according to claim 2 , wherein the step 101 specifically is as follows:
using a complementary metal-oxide-semiconductor (CMOS) high speed camera as an analog data source, wherein a resolution of the COMS high speed camera is 2048×2000, an acquisition frame frequency of the COMS high speed camera is 500 fps, and an image bit depth of the COMS high speed camera is 8 bits.

4. The method for asynchronously storing massive data generated during high speed video measurement according to claim 2 , wherein the step 102 specifically is as follows:
using two optical fiber mediums to connect a CMOS high speed camera data simulator and a high speed image acquisition card, and using a Camera Link HS interface as a data transmission interface.

5. The method for asynchronously storing massive data generated during high speed video measurement according to claim 2 , wherein the step 103 specifically is as follows: using an M.2 type NVMe (non-volatile memory express) protocol high speed solid state disk as a storage medium, wherein the storage medium adopt a memory array form.

6. The method for asynchronously storing massive data generated during high speed video measurement according to claim 1 , wherein the step 202 specifically comprises the following steps:
step 2021 , first checking whether to start to store data; if not, then directly ending the processing process, otherwise executing step 2022 ;
step 2022 , checking an I/O completed queue;
step 2023 , determining whether a write command is completed; if not, then continuously checking the I/O completed queue, otherwise executing step 2024 ;
step 2024 , reading a data block from a buffer pool; and
step 2025 , sending a write-in-device command, and updating a written offset value.

7. The method for asynchronously storing massive data generated during high speed video measurement according to claim 6 , wherein the data block in the step 2024 is in a size of a single frame image.

8. The method for asynchronously storing massive data generated during high speed video measurement according to claim 1 , wherein the step 203 specifically comprises the following steps:
step 2031 , determining whether stopping-storing is triggered; if the stopping-storing is triggered, executing step 2032 ;
step 2032 , starting up a thread;
step 2033 , checking whether preset time is consistent with storage time; if the preset time is consistent with the storage time, executing step 2035 ; if the preset time is not consistent with the storage time, executing step 2034 ;
step 2034 , continuously waiting until the storage time is consistent with the preset time, and then executing step 2035 ; and
step 2035 , directly setting to stop storing.

Assignees

• Univ Tongji

Inventors

• Tong Xiaohua
• Chen Peng
• Ma Huangping
• Xie Huan
• Feng Yongjiu
• Liu Shijie
• Jin Yanmin
• Xu Xiong
• Liu Sicong
• Ye Zhen
• Wang Chao

Classifications

• H04N5/77 Primary

  between a recording apparatus and a television camera · CPC title

• H04N25/71

  Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors · CPC title

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• H04N5/907 Primary

  using static stores, e.g. storage tubes or semiconductor memories (H04N5/91 takes precedence) · CPC title

• G11B2020/10537

  Audio or video recording · CPC title