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Time sequence controlling and recording device suitable for high-speed photographic image and sensor signal

A sensor signal, timing control technology, applied in the direction of image communication, color TV components, TV system components, etc. The effect of increased automation, repeatability and stability

Active Publication Date: 2018-04-20
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For these reasons, in the characteristic analysis of transient flow, image signal analysis and sensor measurement analysis are often carried out independently, and it is difficult to establish the relationship between the overall characteristics of the flow, image and flow field characteristics

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  • Time sequence controlling and recording device suitable for high-speed photographic image and sensor signal
  • Time sequence controlling and recording device suitable for high-speed photographic image and sensor signal
  • Time sequence controlling and recording device suitable for high-speed photographic image and sensor signal

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Embodiment Construction

[0026] Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described here.

[0027] In the current experimental measurement, the measurement and control system based on sensors and data acquisition cards and the visual image capture through high-speed cameras are two independent systems. Among them, the acquisition of signal parameters adopts a relatively mature measurement control system, which is realized by automatic control and timing triggering, and image acquisition is mostly realized by manual triggering of high-speed cameras. An important problem caused by manually triggering image acquisition is that it is impossible to know ...

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Abstract

The invention relates to a time sequence controlling and recording device suitable for a high-speed photographic image and a sensor signal. The time sequence controlling and recording device comprisesa signal acquisition unit and a photographic instrument, wherein the time sequence controlling and recording device further comprises a time sequence processing unit and a pulse generator; the time sequence processing unit is used for outputting a synchronous triggering level signal of the signal acquisition unit and the photographic instrument, so that start and stop recording of the photographic instrument and signal acquisition of the signal acquisition unit are synchronously triggered; and the pulse generator is used for converting the synchronous triggering level signal output by the time sequence processing unit into two pulse signals, wherein the photographic instrument alternatively starts shooting and stops shooting while receiving the pulse signals. The invention provides a triggering and recording device based on a programmable time sequence and for acquisition of the photographic instrument and measurement of the sensor in the liquid measurement aspect; an image signal shot by the photographic instrument and a digital signal acquired by the signal acquisition unit can be automatically matched on the timeline; and thus, integral analysis on flow characteristics and parameters is realized.

Description

technical field [0001] The invention belongs to the field of fluid observation, and in particular relates to a timing control and recording device suitable for high-speed photographic images and sensor signals. Background technique [0002] High-speed photography is a widely used experimental observation method for high-speed motion. For the motion of transient change, high-speed photography can shoot and record the dynamic change process at a high frequency, and the recorded images can directly reflect the change trend of the high-speed transient change process, providing reliable data for the study of high-speed motion mechanism and law . In the field of fluids, a large number of flows belong to unsteady flow fields or transient flows, such as turbulent flow, fluid velocity, flow field, bubbles, boiling, two-phase flow, etc. In the observation and analysis of these flow characteristics, high-speed photography plays an irreplaceable role. [0003] In most cases, the comp...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/60H04N23/65
Inventor 杨晨声方杰张玉环王培聪蔡国飙
Owner BEIHANG UNIV
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