SU1358110A1 - Apparatus for forming infra-red image - Google Patents

Abstract

Invention m. used in non-destructive testing systems based on pyroel vidicon. The purpose of the invention is to simplify the device by eliminating the memory block and reducing the memory capacity of the video processor. The device contains a transmitting thermal imaging camera 1 on a pirikon, ADC 2, converter 3 codes, clock generator 4, adder 5, memory blocks 6 and 7, switch 8, video processor 9, video viewing unit 10. Switch 11 is entered. 1 slug. O) with SD 00

Description

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The invention relates to television and can be used in non-destructive monitoring systems created on the basis of a pyroelectric video.

The aim of the invention is to simplify the device by eliminating the memory block and reducing the memory capacity of the video processor.

The drawing shows a structural electrical circuit of the proposed device.

The thermal imaging device contains a transmitting thermal imaging camera 1 on a pyric, an analog-to-digital converter (ADC) 2, a code converter 3, a clock generator 4, an adder 5, the first 6 and a second 7 memory blocks, the first switch 8, a video processor 9, the video viewing unit 10 and the second switch 11. The device operates as follows.

At the output of the transmitting thermal imaging camera 1 on a pyricon operating in television mode under the control of the synchro-generator 4, when registering thermal radiation, a useful signal arises at the level of the pedestal signal. In ADC 2, the analog signal is converted to a digital code. To simplify the circuit solution, the operation of subtracting digital, code-open and closed frames is replaced by the addition of the forward code of one frame and the reverse code of another. In the applied standard ADC K 1107PV2, a straight code or additional code is formed at the outputs, which. adder 5 is converted to the opposite by adding a low-order bit. In the above codes, the converter 3 is controlled by the signals of the synchronous generator 4. The digital codes of the open frame from the corresponding Ix outputs of the converter 3 through the second switch 11 are entered into the first memory block 6. The information of the next closed frame is removed from the ADC 2 in additional codes, supplied by the converter 3 to the first inputs of the adder.

At the same time, the memorized forward open frame codes are synchronously read from the first block of 6 memory. Their addition in the adder 5 with the corresponding correction of the additional code in the reverse allows the output

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adder 5 to obtain codes of an improved thermal image with a compensated pedestal level and a relatively increased useful signal.

The first memory block works in read-write mode. It records the closed and open frames in turn. Thus, if a memorized open frame is read from the first code from the first memory block 6 in the forward code, then the current closed frame in the additional code is also written to it.

The results of the addition codes are recorded in the second memory block 7, which also operates in read-write mode. The read information enters the video processor .9 and through the first switch B to the video viewing unit 10, on the screen of which, in the television scan mode, the contents of the second memory block 7 are displayed. Video processor 9 leads the conversion of information programmatically.

In this case, such operations as scaling, image rotation, contouring, isotherm extraction, etc. can be performed. In a special way, the processed information from the output of the video processor 9 through the second input of the second switch 11 is recorded in the first memory block 6, since the full image of the summed frame necessary for the video processor 9 to work is contained in the second memory block 7. Recording the information received from the video processor 9 into the first memory block 6 makes it possible to bring it through the first switch 8 to the screen of the video viewing block 10.

Claims (1)

Invention Formula A thermal imaging device comprising serially connected transmitters. a pyrikon thermal imaging camera, an analog-to-digital converter and a code converter, whose synchronization inputs are connected to the output of a synchronous generator, an adder, a first memory block, a second memory block, the output of which is connected through the first switch to the input of a video viewing unit, a video processor, characterized in that , with the aim of simplifying the device by eliminating the memory block and reducing the video processor memory size, the output of the code converter and the input of the first memory block is entered by the second switch, the second input of which is connected to the video processor output, input is co-editor A. Shandor Compiled by G. Rosatkevich Tehred M. Khodanich Proofreader M. Maksimishinets Order 60P9 / 57 Circulation 636 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow. Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, st. Project, 4 Secondly, it is connected to the output of the second memory block, the input of which is connected to the output of the adder, the input of which is connected to the output of the code converter, while the second input of the first switch is connected to the output of the first memory block.