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Clock synchronization implementation method of wind tunnel pressure measurement system

A technology of clock synchronization and implementation method, which is applied in the measurement of fluid pressure, time division multiplexing systems, measurement devices, etc., and can solve problems such as incompatibility

Active Publication Date: 2022-07-22
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the requirements of the wind tunnel pressure test test have very high confidentiality, and any equipment on the test site is strictly prohibited from accessing external applications, so GPS, Beidou and atomic clocks are not suitable for the timing of the wind tunnel pressure test system

Method used

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  • Clock synchronization implementation method of wind tunnel pressure measurement system
  • Clock synchronization implementation method of wind tunnel pressure measurement system
  • Clock synchronization implementation method of wind tunnel pressure measurement system

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Embodiment Construction

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] The invention provides a clock synchronization implementation method of a wind tunnel pressure measurement system, such as figure 1 shown, including the following steps:

[0051] S101, taking the time of the data acquisition server in the wind tunnel pressure measuring system as the reference time as the master clock, and taking the time of multiple upper computers and multiple digital pressure measuring modules in the wind tu...

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Abstract

The invention relates to the technical field of wind tunnel pressure measurement, and discloses a clock synchronization implementation method for a wind tunnel pressure measurement system, and the method comprises the steps: taking the time of a data collection server in the wind tunnel pressure measurement system as the reference time as a master clock, and taking the time of a plurality of upper computers and a plurality of digital pressure measurement modules in the wind tunnel pressure measurement system as slave clocks; the data acquisition server synchronizes the upper computer based on an NTP protocol; the upper computer carries out soft synchronization on the digital pressure measuring module in a mode of broadcasting a command message. In this way, aiming at the current situation that networking or satellite coverage master clocks cannot be added on a wind tunnel site, the NTP protocol and a software synchronization mechanism are combined, synchronization of all equipment clocks of a wind tunnel pressure measuring system and clocks of a data acquisition server can be achieved, and the requirement for data confidentiality is met.

Description

technical field [0001] The invention relates to the technical field of wind tunnel pressure measurement, in particular to a clock synchronization implementation method of a wind tunnel pressure measurement system. Background technique [0002] The conventional pressure measurement test of the wind tunnel is usually to measure the surface pressure of the model under steady conditions, and it is concerned with the pressure distribution of the model surface. The pressure at a certain point under the same wind speed and the same model state is determined and repeatable. In the constant step test, at each angle, delay a certain time, and then collect multiple data of a certain length of time to average, the synchronization between multiple devices is not high, and it can be in the order of milliseconds. [0003] At present, the timing accuracy of the mainstream wind tunnel pressure measurement system can be controlled within 20ms to meet the pressure measurement test requirements...

Claims

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Application Information

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IPC IPC(8): H04J3/06G01L11/00G01M9/06
CPCH04J3/0667H04J3/0644G01L11/00G01M9/06Y02P90/02
Inventor 徐开明姜裕标梁磊张林刘忠华吴志刚贾英杰高大鹏魏春华尹熹伟杨升科廖先辉蒋海林
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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