KR100255729B1 - Apparatus for infrared image - Google Patents

Abstract

PURPOSE: An infrared video device is provided to output an image only by a horizontal scanning by using a detector a valid vertical line thereof is more than 480 for covering the vertical scanning. CONSTITUTION: An infrared rays optical unit(100) senses infrared rays offered from an object to be outputted as an image. A reflection unit(105) biases the image of the object. A horizontal scanning unit(110) scans the image in the horizontal direction. A detecting unit(115) comprises pixels capable of covering a vertical line of the infrared rays signal of the image of the object, and detects an electrical analogue signal in accordance with the size of the infrared rays signal. An amplifying unit(120) amplifies the electrical analogue signal. An analogue-digital converter(125) converts the electrical analogue signal into a digital signal. A multiplexer(130) passes the digital signal selectively in accordance with a system timing control signal. A digital-analogue converter(135) converts the digital signal into an analogue image signal. A video signal processor(140) extracts only a video signal out of the analogue image signal. A display unit(145) displays the video signal on a screen.

Description

Infrared Imaging Device {Apparatus for infrared image}

The present invention relates to an imaging apparatus, and more particularly to an infrared imaging apparatus.

The operation of a general infrared imaging apparatus detects an image according to a heat from an object to be imaged, and applies the detector to a detector (not shown) to convert the thermal image into an electrical analog signal by vertically and horizontally scanning the thermal image. The electrical analog signal detected by the detector is converted into a digital signal, processed into a signal for image output, and then processed into an analog signal and outputted as an image. Infrared imaging devices have the same type of video output as RS170, so the effective vertical line should be at least 480 and the horizontal pixels should be at least 600. Like a typical Charge Couple Device (CCD) camera, when the number of detector pixels is 480 * 600 or more, the screen can be reproduced without a separate scanning device. However, since the heat detecting detector has only about 8 to 120 lines of vertical lines and only parts having 1 to 8 pixels horizontally, it is necessary to scan vertically and horizontally within the screen frame playback time. You can get video output. In order to reproduce the screen at 480 * 600, which is the normal number of detector pixels, 120 * 8 vertical * horizontal pixel lines are scanned horizontally 60 times in a single vertical scan within the screen reproduction time. You can repeat the 4 scans to get the desired image output. In other words, the thermal image of the object is detected, and the vertical syringe has to scan the TV screen, and the horizontal scan is synchronized with the vertical scan. Produces the same signal.

However, the infrared imaging apparatus needs to scan at high speed in order to match the scanning time to the screen frame time, and due to the high speed scanning apparatus, there is a problem in that the size of the system is increased and power consumption is high and the life is shortened.

The technical problem to be achieved by the present invention is to provide an infrared imaging device capable of outputting the image only by horizontal scanning using more than 480 detectors that can cover the vertical scanning.

1 is a block diagram showing the configuration of an infrared imaging apparatus according to the present invention.

FIG. 2 is a detailed view of the detector of the apparatus shown in FIG. 1.

An infrared imaging apparatus for solving the technical problem to be achieved by the present invention is an image processing apparatus for sensing and imaging an infrared signal provided from a subject, and deflects the infrared signal detected from the subject and is synchronized with the signal A scanning unit scanning a signal horizontally; A detector configured to cover the vertical line of the infrared signal scanned from the scan unit and detecting an electrical analog signal according to the magnitude of the infrared signal; And a signal processor configured to process the electrical analog signal detected by the detector as an image signal.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of an infrared imaging apparatus according to the present invention.

The apparatus shown in FIG. 1 includes an infrared optical unit 100 for detecting infrared rays provided from a subject to be output as an image, and a reflector 105 for deflecting an image of the subject by infrared rays detected by the infrared optical unit 100. The horizontal scan unit 110 horizontally scans the image of the subject deflected from the reflector 105, and the horizontal scan unit 110 may cover the vertical line of the infrared signal with respect to the image of the subject scanned from the horizontal scan unit 110. Comprising a pixel and the detection unit 115 for detecting an electrical analog signal according to the size of the infrared signal, the amplification unit 120, amplification unit 120 for amplifying the electrical analog signal detected by the detection unit 115 Analog-to-Digital Converter (ADC) 125 for converting the converted electrical analog signal into a digital signal, and the analog-D by the System Timing Control (STC) signal. A multiplexer (MUX: MUltipleX) 130 for selectively passing the digital signal converted by the optical converter 125 and a digital-to-analog converter for converting the digital signal selectively passed in the multiplexer 130 to an analog image signal ( DAC: Digital-Analog Converter 135, video signal processor 140 for extracting only video signals from analog-to-analog converter 135, and video signal processor 140 The display unit 145 displays a video signal on a screen.

FIG. 2 is a detailed view of the detector of the apparatus shown in FIG. 1.

Next, the present invention will be described in detail with reference to FIGS. 1 and 2.

An infrared ray imaging apparatus is an apparatus that converts an image according to heat detected from an object into an electrical signal to image an object that is difficult to see at night.

The infrared optical unit 100 detects infrared rays provided from a subject to be output as an image. The infrared optical unit 100 is a portion corresponding to a lens as compared to a charge coupled device camera. The infrared optical unit 100 does not pass visible light or ultraviolet rays provided from a subject and passes only heat, that is, infrared light, so as to detect an image according to heat. It is a lens.

The reflector 105 deflects the image of the subject due to the infrared rays detected by the infrared optical unit 100. The reflector 105 is replaced with a conventional vertical syringe (not shown). Since the vertical * horizontal line of the general detector is 480 * 600, and the vertical line of the detector 115 according to the present invention is 480, the screen can be reproduced without a separate vertical syringe. The image of the subject by the vertical line is deflected using the reflector 105.

The horizontal scan unit 110 horizontally scans an image of a subject by infrared rays reflected from the reflector 105. In a typical charge coupled device camera, if the vertical * horizontal line is 480 * 600, the screen can be reproduced even without a syringe. However, since the detection unit 115 of the infrared imaging device has 4 horizontal pixels, it can perform 150 high-speed scans horizontally within the screen frame playback time To play the screen.

The detection unit 115 is composed of enough pixels to cover the vertical line of the infrared signal with respect to the image of the subject scanned from the horizontal scanning unit 110 and detects an electrical analog signal according to the size of the infrared signal. . As illustrated in FIG. 2, the detector 110 includes 480 * 4 vertical and horizontal pixels, so that vertical scanning is not necessary. When the horizontal scanning is performed, the detection unit 115 detects an electrical analog signal corresponding to an infrared image of the subject. Can be detected.

That is, in order to reproduce the screen with the normal number of detector pixels, 480 * 600, a 480 * 4 vertical * horizontal pixel line can be scanned 150 times horizontally in one vertical scan within the screen reproduction time to obtain a desired image output. When the infrared image of the subject is detected by infrared rays, the vertical syringe should scan the image on the TV screen, and the horizontal scanning is performed in synchronization with the vertical scan.The detector receives signals and stores them sequentially. Produces a signal like a television picture.

The principle of converting the thermal image input to the detector 115 into an electrical analog signal is that the temperature is present because the signal input to the detector 115 is a signal according to the size of the infrared ray of the subject. Therefore, the detector 115 may set an voltage according to the color from the subject appearing in the form of different colors according to the infrared size, that is, the temperature, and output an analog signal corresponding to the color value. The electrical analog signal output from the detector 115 is sequentially stored in a storage unit (not shown) every scan.

The amplifier 120 amplifies the electrical analog signal detected by the detector 115. Since the electric analog signal for the subject output from the detector 115 is not only weak but also mixed with noise, it is difficult to output an image signal. Therefore, the amplifier 120 amplifies the electrical analog signal for the subject output from the detector 115 to output a reliable and clean signal.

The analog-digital converter 125 converts the electrical analog signal amplified by the amplifier 120 into a digital signal. The reason for converting the electric analog signal amplified by the amplifier 120 into a digital signal is to ensure signal processing. When the video signal is output from the analog signal, it is impossible to obtain a reliable video output due to noise or other problems, and the analog signal is output as a video signal through many different blocks, so it is converted into a digital signal to facilitate data processing. Let's do it.

The multiplexer 130 selectively passes the digital signal converted by the analog-digital converter 125 by the system timing control signal. Even if the infrared ray of the unwanted object is input, it is not output as an image signal unless it is passed through the multiplexer 130. The signal controlling this is a system timing control signal.

The digital-analog converter 135 converts the digital signal selectively passed by the multiplexer 130 into an analog image signal. The data processed signal is converted back into an analog signal, which is an image signal.

The video signal processor 140 extracts only the video signal from the analog video signal converted by the digital-analog converter 135. The video signal includes an audio signal and a video signal. Since the desired signal is a video signal, only the video signal is extracted.

The display unit 145 displays the video signal extracted by the video signal processor 140 on the screen.

In the present invention, the amplifier 120, the analog-to-digital converter 125, the multiplexer 130, the digital-analog converter 135, the video signal processor 140, the display unit 145 is a signal processor Replaced.

As described above, according to the present invention, since the vertical syringe is removed during screen reproduction, the configuration is simplified and the power consumption of the system is reduced, thereby improving reliability.

Claims (3)

An image processing apparatus for sensing and imaging an infrared signal provided from a subject, A scanning unit which deflects the infrared signal detected from the subject and scans the infrared signal horizontally in synchronization with the signal; A detector configured to cover the vertical line of the infrared signal scanned from the scan unit and to detect an electrical analog signal according to the magnitude of the infrared signal; And Infrared imaging device including a signal processor for processing the electrical analog signal detected by the detection unit as an image signal. The method of claim 1, wherein the signal processing unit And a storage unit which sequentially receives and stores an electrical analog signal detected by the detector at every scan. The infrared imaging apparatus of claim 1, further comprising a display unit for visualizing an image signal output from the signal processor.

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