A Method for Acquisition of Instantaneous Light Intensity Signals at Multiple Points in Space Based on Electronic Shutter

Abstract

The invention relates to a spatial multi-point transient light intense signal acquisition method based on an electronic shutter; the method is that: phototransistor working power supplies in all light intensity data acquisition units are controlled in a way that an electronic switch is controlled through a digital signal processing (DSP) chip, thus the phototransistors in all the light intensity data acquisition units are started to acquire spatial multi-point light intensity signals; and simultaneously, the output ends of all the phototransistors are connected with peak maintaining circuits,so that the acquired spatial multi-point light intensity signals are converted into voltage signals and locked in the peak maintaining circuits. The spatial multi-point transient light intense signalacquisition method based on the electronic shutter has the technical effects that: in an optical flow field test, a plurality of light intensity data acquisition units are fixedly arranged at a plurality of points in a space in which the light intensity signals need to be acquired, so that the real-time acquisition and the storage of the light irradiation signals at the points in the space can berealized, and the problems of the testing precision and the real-time performance of an optical flow field are solved.

Description

technical field [0001] The invention relates to a method for collecting instantaneous light intensity signals of multiple points in space, in particular to a method for collecting instantaneous light intensity signals of multiple points in space based on an electronic shutter. Background technique [0002] At present, in the optical flow field test, the real-time collection of optical radiation information of multiple points in space is a relatively difficult problem to solve. Using digital camera electronic shutter plus exposure technology, the instantaneous light intensity signals in several directions of the flow field to be measured can be obtained in the charge coupled device image sensor CCD (Charge Coupled Device) of the digital camera. However, in the collection of discrete spatial multi-point optical radiation information, the use of traditional shutter technology and a large number of charge-coupled device image sensors CCD not only increases the cost and complexi...

AI Technical Summary

Problems solved by technology

However, in the collection of discrete spatial multi-point optical radiation information, the use of traditional shutter technology and a large number of charge-coupled device image sensors CCD not only increases the cost and complexity of the system, but also makes it difficult to control exposure synchronization. The device achieves real-time acquisition

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