WO2012003610A1

WO2012003610A1 - Networked fog penetrating imaging monitor

Info

Publication number: WO2012003610A1
Application number: PCT/CN2010/001374
Authority: WO
Inventors: 王新赛; 沈邱建
Original assignee: 彪马集团有限公司
Priority date: 2010-07-06
Filing date: 2010-09-08
Publication date: 2012-01-12

Abstract

The present invention relates to an imaging monitor, especially a networked fog penetrating imaging monitor, which is characterized in that it includes a filter disc switching control circuit, a charge coupled device (CCD) imaging processing circuit, a broadband fog penetrating processing circuit and a digital/analog (D/A) input-output circuit, the circuits are connected with each other in the manner of D/A circuit internal bus. After receiving an internal control command or an external control command of the D/A input-output circuit, the broadband fog penetrating processing circuit analyses and judges the classificatory attribute of the control command and sends out a corresponding control command to the filter disc switching control circuit to drive the filter bracket to make a common filter disc or a coated filter disc work. The broadband fog penetrating processing circuit receives the analog images outputted by the CCD imaging process circuit. According to the instruction code of the control command, the broadband fog penetrating processing circuit starts the corresponding work state which is original image state, fog penetrating state or enhanced fog penetrating state, and simultaneously outputs the corresponding analog image signals and digital image signals which are in original image mode, fog penetrating mode or enhanced fog penetrating mode.

Description

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Instruction manual

Networked fog imaging monitor

The invention relates to an imaging monitor, in particular to a networked through-fog imaging monitor.

Background technique

With the development of digital imaging technology, real-time monitoring of observation targets using CCD imaging technology has been widely used in various fields of social life and industrial applications. However, the quality of CCD imaging is greatly affected by the atmospheric environment, especially in poor visibility environments such as smoke, fog, water vapor, and helium. The quality of CCD imaging is greatly reduced, which greatly reduces the effective distance and resolution of detection and recognition targets.

The imaging quality of the CCD is greatly affected by the visibility of the environment. When the visibility is not good, the direct effect on the CCD is that the image contrast is degraded, the noise is increased, and the image quality is drastically reduced, and even the imaging cannot be performed normally.

At present, there are two ways to implement CCD imaging technology.

The color-shifting black CCD camera has a working band of 0. 4Mm~0. 78μπι, and its working mode is divided into color imaging and black-and-white imaging mode. The camera works in color mode when the light is strong, and switches through the filter when the light is dimmed. Convert to black and white mode. However, in the case of poor visibility, neither the color mode nor the black and white mode can solve the purpose of clear imaging.

The working wavelength of the CCD fog imaging system is 0.4Mm~: L OMm, and its working mode is divided into original image imaging and fog imaging mode. The working band of the original image is 0. 4ΜΠ! ~ 0. 78μηι, the fog imaging working band is 0. 8μπ! ~ 1. 0Pm.

The CCD through-fog imaging system mainly includes: a fog-transmissive camera, a fog-transmissive processing module, and a central control module. The overall structure of the CCD fog imaging system: The overall structure is divided into three parts, namely the central control module, and the fog

1 ϋ 本 Module and fog camera. The fog-transmitting camera is set at a specific position corresponding to the required observation target, and the fog-transmissive processing module is disposed in the independently arranged outdoor connection box at the lower end of the fog-transmitting camera, and the central control module is disposed in the monitoring center control room; the central control module and the fog-permeable camera The connection is realized by an RF cable or an optical cable; the central control module and the transparent mist processing module are connected by a control cable or an optical cable; the through-fog camera and the transparent mist processing module are connected by a network cable or a twisted pair cable, because the transmission distance of the network cable or the twisted pair cable Limited (generally can't exceed 100 meters), so the outdoor connection box with the fog-passing module can only be placed next to the position where the fog camera is set.

CCD fog imaging system, its working mode is divided into three types. In the case of good visibility, the CCD works in the color original mode. The fog processing module is the core module of the CCD fog imaging system, and its function is through the embedded micro processing. The image processing is performed on the image signal. At this time, the fog processing module is in an inoperative state, and the image is not processed, and the output is in the analog color original mode; when the visibility is poor, the CCD works in the fog mode, and the fog processing module works in the ordinary mode. The fog-transparent processing state, at this time, the fog-through processing module performs an ordinary through-fog algorithm on the image, and the output is a simulated fog-transmissive image; when the visibility is extremely weak, the CCD operates in an enhanced fog-through mode, and the fog-through processing module works in an enhanced fog-through process. State, at this time, the fog-through processing module performs an enhanced fog-through algorithm on the image, and the output is an analog enhanced fog-transparent image.

CCD fog imaging system, its control implementation is in the case of good visibility, in the central control room by pressing the original control button of the central control module to issue control commands to the serial port circuit of the through-half processing module through the 485 control cable, The serial port circuit of the fog processing module sends a control command to the filter switching control circuit of the fog camera through the network cable or the twisted pair cable, and controls the filter holder switching. At this time, the fog processing module does not work as a color original analog signal, and the color The original analog signal is transmitted to the central control module via the video cable. In the case of poor visibility, press the fog control button of the central control module to send a control command to the serial port circuit of the fog processing module through the 485 control cable, and the serial port circuit of the fog processing module sends a control command to send through the network cable or twisted pair. To the filter switching control circuit of the fog camera, control the filter When the frame is switched, the working output of the fog-transmissive processing module is a fog-transmission image analog signal, and the fog-transmission image analog signal is transmitted to the central control module through the video cable. In the case of extremely weak visibility, press the enhanced fog button of the central control module to send a control command to the serial port circuit of the fog processing module through the 485 control cable, and the serial port circuit of the fog processing module issues a control command through the network cable or twisted pair. The line is sent to the filter switching control circuit of the filtering camera to control the filter holder switching. At this time, the working output of the fog processing module is an analog enhanced fog image signal, and the enhanced fog image analog signal is transmitted to the central control module through the video cable.

In summary, the image output of the CCD fog imaging system is an analog signal in both the original mode and the fog-transparent mode, so the conditions used are limited, because the output image is an analog signal and cannot be directly connected. Into the computer network, so the system can only be used in certain work environments, such as the need to provide video cable connection in the field, if there is no video cable connection in some daily use environment, CCD fog imaging system can not The connection of the signal is normally implemented.

Summary of the invention

In view of the problems in the prior art, it is an object of the present invention to provide a technical solution for a networked through-fog imaging monitor.

The networked through-fog imaging monitor is characterized in that it comprises a filter switching control circuit, a CCD imaging processing circuit, a wide-band transparent fog processing circuit and a digital-to-analog input-output circuit, and a digital-mode internal bus mode is adopted between the circuits. After the connection, the wide-band transparent fog processing circuit receives the internal control command or the external control command of the digital-to-analog input-output circuit, analyzes and judges the class attribute of the control command, and issues a corresponding control command to the filter switching control circuit to activate the filter holder. Working from ordinary filter work or coated filter, the wide-band transparent fog processing circuit receives the analog image output from the CCD imaging processing circuit. According to the command code of the control command, the wide-band transparent fog processing circuit starts the corresponding working state, that is, the original image state. The fog-passing state and the fog-enhancing state are enhanced, and the corresponding analog image signal and digital image signal are outputted at the same time, that is, the original image mode, the fog-transmissive mode, and the enhanced fog-through mode. The networked through-fog imaging monitor is characterized in that the digital-analog input-output circuit is disposed in a backplane of the monitor body, and can output an analog image signal and a digital image signal, and a digital-to-analog input-output circuit. The back panel interface is respectively connected to an analog image input interface, a digital image input interface, an analog image output interface, a digital image output interface, a 485 input control port, a button switch connection, a serial port circuit and a switch circuit.

The networked through-fog imaging monitor is characterized in that the control button of the wide-band translucent processing circuit is disposed on a back panel of the monitor, and a 485 input interface is disposed on the back panel of the monitor, so that The wide-band translucent processing circuit can be connected to the external control device through the 485 input control port provided on the back panel of the monitor, so that the operation of the wide-band translucent processing circuit is controlled by the monitor body and external control;

The microprocessor FPGA in the wide-band transmissive processing circuit is respectively connected with a video encoding circuit, a relay, a video decoding circuit, and an internal control circuit, and the signal of the video decoding circuit is directly outputted through the relay, and the other is analog-digital converted. After the circuit is processed, the serial port circuit and the switch circuit of the internal control circuit are respectively connected to the serial port circuit and the switch circuit of the digital-analog input-output circuit.

The networked through-fog imaging monitor is characterized in that the internal control circuit is provided with a control microprocessor, and the serial port circuit and the switch circuit of the control microprocessor are respectively connected with the serial port circuit and the switch circuit, and the control microprocessor is controlled. The digital code is connected to the microprocessor FPGA via a digital interface.

The networked through-fog imaging monitor is characterized in that the analog-to-digital conversion circuit receives the signal of the relay, sends the signal to the A/D signal processor through the analog interface, and finally sends the signal through the digital interface. Digital image input interface.

The networked through-fog imaging monitor is characterized in that the microprocessor FPGA adopts EP3C40F324 of ALTERA Company, and the image fog-through processing or the enhanced fog-through processing is completed by the fog-through processing software embedded in the microprocessor FPGA. The video encoding circuit adopts AD company ADV7123 釆 chip, video decoding circuit Using TI's TVP5147 display control chip, the internal control circuit's control microprocessor uses ALTERA's MAX II 570G CPLD, relays and relays use NEC's EA2- 5, serial port circuit uses MAX3487, switch circuit uses CAT1161, digital-to-analog conversion circuit The A/D signal processor uses AD's SV7123.

The networked through-fog imaging monitor is characterized in that the button switch is a self-circulating button-type switch button, which can be an original image processing button, a fog-transmissive button, and an enhanced fog-transmissive button.

The networked through-fog imaging monitor is characterized in that the 485 input control port comprises a B-line terminal, and is connected to the central control room control device via a control cable.

The networked through-fog imaging monitor is characterized in that the analog image input interface is a connection terminal in the monitor body, and is provided with a 75-ohm joint, and is connected to the relay through a video line; the digital image input interface is The connection terminal of the monitor body is provided with a double-row 10-pin pin digital cable connector, and is connected to the digital interface through a 10-core digital cable.

The networked through-fog imaging monitor is characterized in that the analog image output interface is an external connection terminal of the monitor, and is provided with a 75-ohm joint, and is connected with a central control room video recording device through a video cable or an analog optical transceiver; The digital image output interface is an external connection terminal of the monitor, and is provided with an RJ45 network connector, and is connected to the central control room video recording device through a digital optical transceiver.

The above-mentioned networked through-fog imaging monitor adopts the cutting-edge technology in the field of image processing to solve the problem that the conventional CCD cannot be normally imaged under the condition of low visibility. The monitor overcomes the fact that the existing CCD fogging product can only output the simulated image in actual use. The limitations and defects of the signal can adapt to various application environment sites, providing users with great convenience and flexibility in practical applications, and have broad application prospects. The wide-band transmissive imaging processing circuit 103 adopts CYCLONE III series. EP3C40F324 model FPGA ultra-large-scale programmable array, using high-resolution video acquisition ADV7123 chip and TVP5147 video display control chip, the input CCD image acquisition, quantization, encoding, after digitization, converted to high gray level simulation Video output, and at the same time can output analog image signals and networked digital image signals.

DRAWINGS

Figure 1 is a schematic structural view of the present invention;

2 is a schematic structural view of a wide-band transmissive processing circuit;

3 is a schematic structural diagram of an analog-to-digital conversion circuit;

Figure 4 is a schematic diagram showing the structure of a digital-to-analog input-output circuit;

Figure 5 is a schematic diagram of the structure of the internal control circuit.

In the figure: 101-filter switching control circuit, 102-CCD imaging processing. Circuit, 103-wideband fog processing circuit, 104-digital-to-analog input and output circuit, 201-video encoding circuit, 202-relay, 203-microprocessor FPGA, 204-internal control circuit, 205-relay, 206-video decoding Circuit, 207-analog-to-digital conversion circuit, 208-switch circuit, 209-serial circuit, 301-analog interface, 302-A/D signal processor, 303-digital interface, 401-analog image input interface, 402-digital image input Interface, 403-serial circuit, 404 - switch circuit, 405-backplane interface, 406-485 input control port, 407-button switch, 408-analog image output interface, 409-digital image output interface, 501-serial circuit, 502-switch circuit, 503-control microprocessor, 504-digital code, 505-digital interface.

detailed description

The present invention will be further described below in conjunction with the drawings of the specification:

As shown in the figure, a networked through-fog imaging monitor includes a filter switching control circuit 101, a CCD imaging processing circuit 102, a wide-band transmissive processing circuit 103, and a digital-to-analog input-output circuit 104, and a digital-to-analog circuit is used between the circuits. Internal bus mode connection, these buses include digital signal lines and analog signal lines, so that the signal transmission is faster and the bit error rate is lower. The wide-band transmissive processing circuit 103 receives the internal control command or external control of the digital-to-analog input-output circuit 104. After the command, the category attribute of the control command is analyzed and judged, and a corresponding control command is issued to the filter switching control circuit 101 to operate the filter holder, which is operated or coated by the ordinary filter. The filter works, the wide-band transmissive processing circuit 103 receives the analog image output from the CCD imaging processing circuit 102, and according to the instruction code of the control command, the wide-band transmissive processing circuit 103 activates the corresponding working state, that is, the original image state, the fog-through state, The fog-transparent state is enhanced, and the corresponding analog image signal and digital image signal are outputted at the same time, that is, the original image mode, the fog-through mode, and the enhanced fog-through mode.

4微米。 The monitor uses a working band of 0. 4μπ! ~ 1. lMm.

The control mode of the networked through-fog imaging monitor is: After power-on, the control microprocessor 503 in the internal control circuit 204 detects and receives the control command sent from the serial port circuit 501 and the switch circuit 502, and controls the micro-processing. After parsing 503, it is digitally encoded 504 and sent to the digital interface 505, and uploaded to the microprocessor FPGA 203. The microprocessor FPGA 203 analyzes and sends a filter control command to the relay 202, and the relay 202 closes and sends the command to the filter switching control circuit 101. The filter switch is started; at the same time, the microprocessor FPGA 203 starts the algorithm program in the resident microprocessor, and the image input signal passes through the video encoding circuit 201 to the microprocessor FPGA 203 for image processing, and is output to the video decoding circuit 206 to the relay 205. The relay 205 is closed and simultaneously outputs the image to the digital-analog input-output circuit 104. The image outputted by the relay 205 is an analog color original image, the simulated fog-transformed image, the simulated enhanced fog-transformed image, and the other image is output to the digital-to-analog conversion circuit. 207, A/D letter in the analog-to-digital conversion circuit 207 The image processor 302 digitally encode the analog output to a digital to analog input and output circuits 104, into a digital image output of a color original image, the digital image through the fog processing, digital image processing enhancement through the fog.

The filter switching control circuit 101, the CCD camera has this function, and the filter holder is provided with two kinds of filters, that is, a common filter and a coated filter, and the function is to switch the control circuit through the filter 1 0 1 The filter switching command is issued to enable the filter to switch to the normal filter or the coated filter state, and the reflected light intensity of the object is filtered through the filter.

The CCD imaging processing circuit 102, the CCD camera has this function, and the function is to sample, encode, image, decode, and restore the analog image signal. The digital-to-analog input-output circuit 104 is disposed in the back panel of the monitor body, and can output both an analog image signal and a digital image signal. The back-plate interface 405 in the digital-to-analog input-output circuit 104 is respectively connected to the analog image input. The interface 401, the digital image input interface 402, the analog image output interface 408, the digital image output interface 409, the 485 input control port 406, the push button switch 407 are connected, the serial port circuit 403, and the switch circuit 404.

The digital-to-analog input-output circuit 104 is controlled by the 485 input control port 406 and the button switch 407 to receive and control the output image of the monitor.

The control button of the wide-band transmissive processing circuit 103 is disposed on the back panel of the monitor, and the 485 input interface is disposed on the back panel of the monitor, so that the wide-band transparent mist processing circuit 104 can pass through the monitor back The 485 input control port 406 disposed on the board is connected to the external control device, and the operation of the wide-band transmissive processing circuit 103 is controlled by the monitor body and the external control.

The microprocessor FPGA 203 in the wide-band transmissive processing circuit 103 is respectively connected to the video encoding circuit 201, the relay 202, the video decoding circuit 206, and the internal control circuit 204, and the signal of the video decoding circuit 206 is directly outputted through the relay 205. The other circuit is processed and output by the analog-to-digital conversion circuit 207. The serial port circuit 209 and the switch circuit 208 of the internal control circuit 204 are respectively connected to the serial port circuit 403 and the switch circuit 404 of the digital-to-analog input-output circuit 104.

The wide-band transmissive processing circuit 103 is controlled by the internal control circuit 204 to detect the command signals of the serial port circuit 209 and the switch circuit 208, and is reported to the microprocessor FPGA 203. The microprocessor FPGA 203 performs parsing to make a decision, and the control command passes. The relay 202 is sent to the filter switching control circuit 101; the working command is sent to the video encoding circuit 201 and the video decoding circuit 206; the image input is digitally encoded by the video encoding circuit 201, and the image processing is performed to the microprocessor FPGA 203 to the video decoding circuit 206. The decoding is restored to an analog image and output via the relay 205.

The internal control circuit 204 is provided with a control microprocessor 503 for controlling the string of the microprocessor 503. The port circuit 501 and the switch circuit 502 are respectively connected to the serial port circuit 209 and the switch circuit 208, and the digital code 504 of the control microprocessor 503 is connected to the microprocessor FPGA 203 via the digital interface 505.

The control mode of the internal control circuit 204 detects the signal state of the serial port circuit 501 and the switch circuit 502 by controlling the microprocessor 503, and determines the type of the control command. When a command signal is detected, the control microprocessor 503 determines the signal type. A corresponding control command is then issued to the digital code 504, which encodes the control command and sends it to the digital interface 505.

The internal control circuit 204 controls the commands into two categories according to the command category, one is an internal control command from the switch circuit 404, and the command is an analog switch signal, corresponding to three analog switch signals, that is, the original image, Through the fog, enhance the fog, the analog switch signal is generated by the push button switch 407 in Figure 4; the other is the external control command from the serial port circuit 403, this command is a 485 serial command, corresponding to three serial control commands The original picture, the fog, and the enhanced fog, the 485 serial command is generated by the 485 input control port 406 of FIG. 4 receiving the command sent by the central control unit.

The internal control circuit 204, the class analysis of the control command is received by the control microprocessor 503 and sent to the digital code 504, and the digital code 504 is encoded as a different digital code according to the preset requirement and sent to the microprocessor FPGA 203. The processor FPGA 203 performs code comparison according to program presets, and issues corresponding control commands and work commands.

The internal control circuit 204 implements a control flow from the button switch 407 command: After the monitor is powered on, when the control microprocessor 503 detects the switch signal of the switch circuit 502, it analyzes the switch signal to the following three types. Status:

The original switch quantity signal: The control microprocessor 503 sends a command to the digital code 504 for corresponding encoding, and the code is uploaded to the microprocessor FPGA 203, and the microprocessor FPGA 203 issues a corresponding control command to the filter switching control circuit 10, 1 filter. Switching to the normal filter working state, at this time, the wide-band transmissive processing circuit 103 does not work, and the image signal from the CCD imaging processing circuit 102 passes through the wide-band transmissive processing circuit 103. Output to relay 205, the output image is an analog color original image.

The fogging switch signal: the control microprocessor 503 sends a command to the digital code 504 for corresponding encoding, and the code is uploaded to the microprocessor FPGA 203, and the microprocessor FPGA 203 issues a corresponding control command to the filter switching control circuit 10, 1 filter. Switching to the working state of the coating filter, at this time, the wide-band transmissive processing circuit 103 operates simultaneously, and starts the fog-through processing program preset to the microprocessor FPGA 203, and the image signal from the CCD imaging processing circuit 102 passes through the wide-band transparent fog processing circuit. After the fogging process of 103, it is output to the relay 205, and the output image is an analog fog-transformed image.

Enhancing the translucent switching signal: The control microprocessor 503 sends a command to the digital encoding 504 for corresponding encoding, and the encoding is uploaded to the microprocessor FPGA 203, and the microprocessor FPGA 203 issues a corresponding control command to the filter switching control circuit 1 0 1. The film is switched to the working state of the coated filter. At this time, the wide-band transmissive processing circuit 103 operates simultaneously, and the enhanced fog-through processing program preset on the microprocessor FPGA 203 is started, and the image signal from the CCD imaging processing circuit 102 passes through the wide-band fog. After the mist processing of the processing circuit 103, it is output to the relay 205, and the output image is an analog enhanced fog-transmissive image.

The internal control circuit 204 implements a control flow from the 485 input control port 406 command: after the monitor is powered up, when the control microprocessor 503 detects the serial code signal received by the serial port circuit 501, analyzes the serial When the code signal is in the following three states:

The original serial code signal: The control microprocessor 503 sends a command to the digital code 504 for corresponding encoding, and the code is uploaded to the microprocessor FPGA 203, and the microprocessor FPGA 203 issues a corresponding control command to the filter switching control circuit 101, and the filter is switched. In the normal filter operating state, the wide-band transmissive processing circuit 103 does not operate at this time, and the image signal from the CCD imaging processing circuit 102 passes through the wide-band transmissive processing circuit 103 and is output to the relay 205, and the output image is an analog color original image.

Through-fog serial code signal: The control processor 503 sends a command to the digital code 504 for corresponding encoding, and the code is uploaded to the microprocessor FPGA 203, and the microprocessor FPGA 203 issues a corresponding control command to the filter switch. The control circuit 101 switches the filter to the working state of the coated filter. At this time, the wide-band transmissive processing circuit 103 operates simultaneously, and starts the fog-through processing program preset on the microprocessor FPGA 203. The image signal from the CCD imaging processing circuit 102 passes. After the through-diffusion process of the wide-band translucent processing circuit 103, it is output to the relay 205, and the output image is an analog transmissive processed image.

The fog-transferred serial code signal is enhanced: the control processor 503 sends a command to the digital code 504 for corresponding encoding, and the code is uploaded to the microprocessor FPGA 203, and the microprocessor FPGA 203 issues a corresponding control command to the filter switching control circuit 101, and the filter switches. For the working state of the coating filter, the wide-band transmissive processing circuit 103 simultaneously operates to activate the enhanced fog-through processing program preset to the microprocessor FPGA 203, and the image signal from the CCD imaging processing circuit 102 passes through the wide-band transparent fog processing circuit. After the fogging process of 103, it is output to the relay 205, and the output image is an analog enhanced fog-transparent processed image.

The internal control circuit 204 can receive the internal control command sent by the switch circuit 404 and the external control command sent by the serial port circuit 403.

After receiving the signal of the relay 205, the analog-to-digital conversion circuit 207 sends the signal to the A/D signal processor 302 via the analog interface 301, and finally sends the signal to the digital image input interface 402 via the digital interface 303.

The A/D signal processor 302 is controlled in such a manner that the analog interface 301 accepts an analog image signal sent from the relay 205, and the analog image signal is an analog color original image or a simulated fog image or a simulated enhanced fog image. The analog image is sampled, quantized, encoded by the A/D signal processor, converted to a digital signal, transmitted to the digital interface 303, and uploaded to the digital image input interface 402 by the digital interface 303.

The microprocessor FPGA 203 adopts EP3C40F324 of ALTERA Company, and the image fogging process or the enhanced fogging process is completed by the fog-through processing software embedded in the microprocessor FPGA203, and the video encoding circuit 201 adopts the ADV7123 chipset of the AD company, and the video is decoded. Circuit 206 uses TI's TVP5147 display control chip, and internal control circuit 204 controls microprocessor 503 using ALTERA's MAX II 570G. The CPLD, the relay 202 and the relay 205 are EA2- 5 of NEC Corporation, the serial port circuit 209 is MAX3487, the switch circuit 208 is CAT1161, and the A/D signal processor 302 of the digital-to-analog conversion circuit 207 is the SV7123 of AD company.

The button 407 is a self-circulating button switch button, which can be an original image processing button, a fog permeable processing button, and an enhanced fog permeable processing button.

The 485 input control port 406 includes A and B two-wire terminals, and is connected to the central control room control device through a control cable.

The analog image input interface 401 is a connection terminal in the monitor body, and is provided with a 75-ohm connector, and is connected to the relay 205 through a video cable; the digital image input interface 402 is a connection terminal in the monitor body, and is provided with a double row. A 10-pin digital cable connector is connected to the digital interface 303 via a 10-pin digital cable.

The analog image output interface 408 is an external connection terminal of the monitor, and is provided with a 75-ohm joint, and is connected to the central control room video recording device through a video cable or an analog optical transceiver; the digital image output interface 409 is an external connection terminal of the monitor. It is equipped with an RJ45 network connector and is connected to the central control room video recording device via a digital optical transceiver.

The wide-band through-fog imaging processing circuit 103 of the present invention adopts the CYCLONE III series EP3C40F324 type FPGA ultra-large-scale programmable array, adopts high-resolution video acquisition ADV7123 chip and TVP5147 video display control chip, and collects, quantizes and encodes the input CCD image. After being digitized, it is converted into a high-gradation analog video output, and at the same time, an analog image signal and a networked digital image signal can be output.

Claims

Claim

A networked through-fog imaging monitor, comprising: a filter switching control circuit (101), a CCD imaging processing circuit (102), a wide-band transmissive processing circuit (103), and a digital-to-analog input-output circuit (104), Each circuit is connected by a digital-analog circuit internal bus, and the wide-band transmissive processing circuit (103) receives the internal control command or the external control command of the digital-to-analog input/output circuit (104), and analyzes and judges the class attribute of the control command. The corresponding control command is issued to the filter switching control circuit (101) to operate the filter holder, and the ordinary filter working or the coating filter works, and the wide-band transmissive processing circuit (103) receives the output from the CCD imaging processing circuit (102). Analog image, wide-band transmissive processing circuit according to the command code of the control command

(103) Start the corresponding working state, that is, the original image state, the fogging state, and the enhanced fogging state, and simultaneously output the corresponding analog image signal and the digital image signal, that is, the original image mode, the fog-through mode, and the enhanced fog-through mode.

2 . The networked fog imaging monitor of claim 1 , wherein the digital-to-analog input/output circuit ( 104 ) is disposed in a back panel of the monitor body, and can output an analog image signal and output. The digital image signal, the backplane interface (405) in the digital-to-analog input-output circuit (104) is respectively connected to the analog image input interface (401), the digital image input interface (402), the analog image output interface (408), and the digital image output. Interface (409), 485 input control port (406), push button switch (407) connection, serial port circuit (403) and switch circuit (404).

3. The networked fog imaging monitor of claim 1 wherein the control button of the wideband transmissive processing circuit (103) is disposed on the back panel of the monitor, on the back of the monitor. The 485 input interface is arranged on the board, so that the wide-band transmissive processing circuit (104) can be connected to the external control device through the 485 input control port (406) provided on the back panel of the monitor to realize a wide-band transmissive processing circuit (103) The work is controlled by the monitor body and external control;

The microprocessor FPGA (203) in the wide-band transmissive processing circuit (103) is respectively connected to a video encoding circuit (201), a relay (202), a video decoding circuit (206), and an internal control circuit (204). The signal of the video decoding circuit (206) is directly outputted by the relay (205), and the other circuit is output by the analog-to-digital conversion circuit (207), and the serial port circuit (209) and the switching circuit of the internal control circuit (204) ( 208) respectively connected to the serial port circuit (403) and the switch circuit (404) of the digital-to-analog input-output circuit (104).

The networked fog imaging monitor according to claim 3, wherein the internal control circuit (204) is provided with a control microprocessor (503) for controlling a serial port circuit of the microprocessor (503) ( 501), the switch circuit (502) is respectively connected to the serial port circuit (209) and the switch circuit (208) to control the microprocessor

The digital code (504) of (503) is connected to the microprocessor FPGA (203) via the digital interface (505).

The networked fog-transmissive imaging monitor according to claim 3, wherein the analog-to-digital conversion circuit (207) receives the signal of the relay (205) and sends the signal to the A via the analog interface (301). The /D signal processor (302) processes and finally sends the signal to the digital image input interface (402) via the digital interface (303).

The networked fog imaging monitor according to claim 1, wherein the microprocessor FPGA (203) adopts ALTERA's EP3C40F324, image fogging processing or enhanced fog processing through a microprocessor FPGA. (203) The embedded fog processing software is completed, the video encoding circuit (201) adopts the ADV7123 acquisition chip of AD company, the video decoding circuit (206) adopts TI's TVP5147 display control chip, and the internal control circuit (204) controls the microprocessor. (503) using ALTERA's MAX II 570G CPLD, relay (202) and relay (205) using NEC's EA2- 5, serial port circuit (209) using MAX3487, switching circuit (208) using CAT1161, digital-to-analog conversion circuit ( The A/D signal processor (302) of 207) uses the SV7123 of AD Corporation.

7 . The networked fog imaging monitor according to claim 1 , wherein the button switch ( 407 ) is a self-circulating button switch button, which can be an original image processing button and a fog processing button. , enhanced fog through button.

8. The networked fog imaging monitor of claim 1 wherein said 485 input control port (406) includes A and B two-wire terminals for connection to a central control room control device via a control cable.

The networked fog imaging monitor according to claim 1, wherein the analog image input interface (401) is a connection terminal in the monitor body, and is provided with a 75-ohm joint and a relay (205). The video image input interface (402) is a connection terminal in the monitor body, and is provided with a double-row 10-pin pin digital cable connector, and is connected with the digital interface (303) through a 10-core digital cable.

10. The networked fog imaging monitor according to claim 1, wherein said analog image output interface (408) is an external connection terminal of the monitor, and is provided with a 75-ohm joint, and a central control room video recording device. Connected by a video cable or an analog optical transceiver; the digital image output interface (409) is an external connection terminal of the monitor, and is provided with an RJ45 network connector, and is connected to the central control room video recording device through a digital optical transceiver.