Abstract
The article deals with the issues of improving the accuracy of measurements of the geometric parameters of objects by optoelectronic systems, based on a television multiscan. A mathematical model of a multiscan with scanistor activation is developed, expressions for its integral output current and video signal are obtained, and the mechanism of their formation is investigated. An expression for the video signal is obtained that reflects the dual nature of the discrete–continuous multiscan structure: the video signal can have a discrete (pulse) or analog (continuous) form, depending on the step voltage between the photodiode cells of the multiscan. A Vernier discrete–analog method for measuring the parameters of the light zone on a multiscan is proposed, in which in order to increase the accuracy of the measurements, the location of the video pulse is determined relative to the neighboring reference pulses of a rigid geometric raster due to the slope of the discrete structure of the multiscan. It is established that the Vernier method enables one to make precision measurements of the coordinates, dimensions, and movements of the light zones by an overlay on a video raster of reference pulses from cells—a uniform sequence of Vernier pulses with a recurrence interval, followed by determining the number of the Vernier pulse that coincides with the raster pulse. An optoelectronic device based on a discrete–continuous multiscan, implemented on the basis of the proposed Vernier method of measuring the coordinates of the light zones, which has a high sensitivity to movement, is characteristic of continuous structures, and has increased stability and linearity of the coordinate characteristics typical for discrete structures, is developed.
Highlights
IntroductionThe development of television, robotics, automatic control and monitoring systems, image recognition, and the creation of visual receptors for artificial intelligence systems is directly related to the development of highly sensitive and high-speed vision systems [1,2,3,4,5]
The Vernier strobe at the output of the T3 trigger, lasting from the beginning of the information video signal until the output, combines pulses CP of raster pulses (RP), and the VP pulses of the AND2 circuit arrives at the first input of the AND4 circuit, the second input of which is supplied with Vernier pulses from the VPG
A Vernier discrete analog method for measuring the parameters of the light zone on a multiscan is proposed, in which in order to increase the accuracy of the measurements, the location of the information video pulse is determined relative to the adjacent reference pulses of a rigid geometric raster due to the topology of the discrete structure of the multiscan
Summary
The development of television, robotics, automatic control and monitoring systems, image recognition, and the creation of visual receptors for artificial intelligence systems is directly related to the development of highly sensitive and high-speed vision systems [1,2,3,4,5]. 3 ofthe circuit (Figure 2), with the simplest multiscan switching and low voltage survey in analog mode, provides highly accurate measurements with the necessary geometric parameters of the object’s coordinates, dimensions, and movement, as well as controlling the luminance distribution along the multiscan photosensitive surface. In this most rameters of the object’s coordinates, dimensions, and movement, as well as controlling the commonly used traditional “scanistor” switching scheme, multiscan continuous resistive luminance distribution along the multiscan photosensitive surface.
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