SU1160610A1 - Infra-red imager - Google Patents

Abstract

A thermal imager containing an optically coupled telescopic mirror system, an optomechanical scanner consisting of kinematically connected horizontal and vertical scanning units and a drive motor, and the first radiation receiver, as well as a two-coordinate information display unit, characterized in that increased reproduction accuracy, an optical switch, N - 1 radiation detectors, an electrical switch mechanically connected to the optical switch, the first and second angular field sensors stress. mechanically connected, respectively, with frame and line scan nodes, linearly varying voltage generator, synchronizer, two adders, and N level discriminators, whose outputs are connected to the modulating inputs of two coordinate display unit, the N inputs of the electric switch N outlets under; Connected to the inputs of the respective level discriminators, and (L + 1) -th output through the first adder to the first coordinate input of the two-coordinate information display unit, the output of the first angular position sensor through the series-connected synchronizer, linear voltage generator and the second sum. connected to the second ko-, (L ordinate input of the two-coordinate information display unit, the second input of the first adder is connected to the output of the first angular position sensor, the third input of the first sum ora - the first input of the second adder, a second input coupled to an output of the second angular position sensor, N radiation receivers optically coupled to the optical switch, which is kinematically coupled to uzO5 scrap horizontal.

Description

The invention relates to a technique of television and can be used to study the processes associated with heat generation and radiation of heated surfaces and to study the processes of combustion. The purpose of the invention is to increase the reproduction accuracy. The drawing shows a structural diagram of the imager. The imager contains a telescopic mirror system 1, an optomechanical scanner consisting of a human resource unit 2 and a horizontal scanning unit 3, a drive motor 4, a mirror 5, an optical switch 6, a drive mechanism 7, a housing 8, an electrical switch 9, receivers 10- i radiation, where 14i4N, the first and second sensors 11 and 12 of the angular position, the generator 13 of linearly varying voltage, the synchronizer 14, two adders 15 and 16, the discriminators 17-i level, the amplifiers 18-i and the two-coordinate information display unit 19 and matching amplifier 20. Thermal imager works as follows. The telescopic mirror system focuses on the object of study. The radiation flux, separated by the optical system, hits the swinging mirror of the vertical scanning unit 2 and is directed to the multifaceted rotating prism of the horizontal scanning unit 3. The radiation flux reflected from the mirror prism face by the mirror 5 is directed to the optical switch 6, which, depending on the angular position determined by the drive mechanism 7, directs the radiation flux to one or another radiation receiver 10-i. Receivers 10-i convert the radiation flux into electrical signals. The mechanism 7 is driven by the motor 4. 02 From the sensors 11 and 12 of the angular position, the signals are fed to the inputs of the adders 15 and 16, respectively. The inputs of the adders 15 and 16 also supply the output signal of the generator 13 linearly varying voltage, with the beginning of the signal synchronized in time with the beginning of the signal of sensor 12 using a synchronizer 14. An electric switch 9 mounted on the same shaft with the optical switch 6 switches the receivers 10 -1 radiation, and to the adder 16, via a matching amplifier 20, a signal is supplied from the radiation receiver 10-i of the i-ro channel to which the radiation flux enters at the described time instant. The adders 15 and 16 are connected to the inputs of the two-coordinate information display unit 19, for which a tri-color kinescope can be used. At a low speed of spectrum recording, a multi-channel recorder can be used. Simultaneously feeding the input of a two-coordinate block 19 in rows, frames and an additional signal from generator 13 creates the effect of quasi-volume (relief) of a panoramic picture from the study of the object being studied, which, while preserving the main advantages of presenting information graphically - heuristic perception with prediction of subsequent actions - allows you to reduce the difficulty in decoding. The signal from one of the radiation receivers 10-1 through the amplifier 18-i and the discriminator 17 of the level is fed to the input of the two-coordinate unit 19, allowing to identify certain areas of the panoramic picture of the radiation of the investigated volume according to the energy feature. To protect against extraneous radiation from receivers 10-i, the optical part of the imager is placed in housing 8.

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Claims (1)

A TEPLOVISOR containing optically coupled telescopic mirror system, an optical-mechanical scan unit, consisting of kinematically coupled horizontal and vertical scan nodes and a drive motor, and a first radiation receiver, as well as a two-coordinate information display unit, characterized in that, in order to increase the accuracy of reproduction introduced an optical switch, N - 1 radiation receivers, an electric switch mechanically connected to the optical switch, the first and second angular position sensors, mechanically connected respectively with the nodes of vertical and horizontal scanning, a ramp generator, a synchronizer, two adders, and N level discriminators, the outputs of which are connected to the modulating inputs of two coordinate information display units, N inputs of an electrical switch are connected to the outputs of the respective radiation receivers, N outputs _g under the keys corresponding to the input level discriminators, a (N + 1) -th output from the first adder to the first xY coordinate input unit of the information display, the output of the first angular position sensor through a synchronizer connected in series, the ramp generator and the second adder is connected to the second co-ordinate input of the two-coordinate information display unit, the second input of the first adder is connected to the output of the first angle position sensor, the third input of the first adder is with the first input of the second adder, the second input of which is connected to the output of the second angular position sensor, N radiation receivers are optically coupled to optical switch, which is kinematically connected to the horizontal scanning node.