Active and passive integrated high-penetration imaging equipment

Abstract

The invention provides active and passive integrated high-penetration imaging equipment which comprises a shell and a lens, a collimator, an infrared lens, a display screen and an image intensifier of a light cone camera installed outside the shell, a battery, an infrared detector, a light source, a DDG time sequence control panel and an NX main control panel are further installed inside the shell, and the battery is used for supplying power; the NX main control board is in signal connection with the light cone camera, the DDG time sequence control board, the display screen, the key board, the infrared detector and the light source, and the DDG time sequence control board is in signal connection with the image intensifier. According to the active and passive integrated high-penetration imaging equipment, visibility is improved, visualization in low-visibility environments such as flames, smog, foggy days, glass, curtains and nights is achieved, and meanwhile multifunctional integrated use is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of complex fire scene reconnaissance and rescue, and police reconnaissance, and in particular relates to an active and passive integrated high-penetration imaging device. Background Art

[0002] As the hot smoke from the fire spreads and accumulates in the building, the smoke concentration is high and the environmental visibility is poor. The bright flames in the burning space will cause a "blindness" effect, making it difficult for fire rescue personnel to conduct search and rescue of people in the building, detect dangerous goods, and plan retreat routes. This leads to frequent situations such as stepping on empty space and getting lost, which seriously reduces the efficiency of handling and even causes casualties to rescue personnel. How to conduct efficient on-site reconnaissance, search and rescue, and retreat in such a complex and harsh building environment has always been a pain point that has plagued fire rescue personnel. When tracking fleeing vehicles and investigating crime scenes, the police need to penetrate glass, thick fog and other environments to conduct on-site reconnaissance.

[0003] At present, the reconnaissance equipment used by fire rescue teams when conducting internal attack and fire fighting and rescue work in buildings are mainly high-intensity flashlights and portable infrared thermal imagers. However, as a lighting tool, the high-intensity flashlight has limited ability to penetrate smoke, and its application effect is poor in high-concentration smoke environments. Infrared thermal imagers have a certain penetrating effect on low-temperature smoke, and play an important auxiliary role in fire reconnaissance such as determining the location of the fire, judging the direction of the spread of the fire, and temperature detection. However, flames and high-temperature smoke can cause infrared detectors to be "blind" and unable to see objects around and behind the flames. Therefore, visual enhancement technology in flame and smoke environments is of great significance to improving the initial fire control, rapid internal attack, and personnel search and rescue capabilities of building fires.

[0004] At present, the key technology that has been verified by experiments to achieve imaging through flames, glass, curtains and other media is mainly laser gate imaging technology, which requires the active emission of laser pulses and is therefore an active imaging technology. The technology that is better at penetrating media such as thick smoke and water mist is mainly medium and long-wave infrared imaging technology, which mainly relies on imaging the target's own emission spectrum and is therefore a passive imaging technology. However, when firefighters, police and other demand parties perform their tasks, the media they need to penetrate are complex, and the number and weight of equipment they can carry are limited. Therefore, there is an objective demand for multifunctional integrated equipment that can achieve multi-media penetration. Summary of the invention

[0005] In view of this, the present invention aims to propose an active and passive integrated high-penetration imaging equipment to solve the problem of low visibility in flames, smoke, fog, glass, curtains, and at night.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows: An active-passive integrated high-penetration imaging equipment comprises a shell and a lens of a light cone camera, a collimator, an infrared lens, a display screen, and an image intensifier installed on the outside of the shell; a battery, an infrared detector, a light source, a DDG timing control board, and an NX main control board are also installed inside the shell, and the battery is used for power supply; the NX main control board is respectively connected to the light cone camera, the DDG timing control board, the display screen, a keypad, the infrared detector, and the light source, and the DDG timing control board is connected to the image intensifier by signal.

[0007] Furthermore, the lens of the light cone camera, the image intensifier and the infrared lens of the infrared detector are installed in parallel on the top of the shell, and the collimator is fixedly installed above the image intensifier, a switch is installed at the bottom of the shell, a display screen is installed on one side, and a keypad is installed inside the display screen; a plurality of parallel light sources are arranged inside the shell, a DDG timing control board and an NX main control board are installed on one side of the light source, the trigger connection between the light source and the image intensifier is connected by an SMA plug, and the light source and the collimator are connected by a combined optical fiber.

[0008] Furthermore, the NX main control board provides a hot-swap function for the image intensifier, thereby realizing automatic connection of the device.

[0009] Furthermore, the NX main control board is configured with an adaptive exposure control module, a mode switching module and an image fusion algorithm.

[0010] Furthermore, the DDG timing control board is configured with a distance gate control algorithm for dynamically adjusting the pulse width and delay time of the light source according to the target distance.

[0011] Furthermore, an active and passive integrated high-penetration imaging equipment also includes a switch, and the switch is used to control the on and off of battery power supply.

[0012] Furthermore, the keypad is an 8-key keypad, including 5 GPIO keys and 3 interrupt keys.

[0013] Furthermore, a temperature control module, a power management module, a data storage module and a wireless communication module are also provided inside the shell. The temperature control module is used to automatically adjust the working temperature of the infrared detector and the light source when switching between the infrared passive imaging mode and the range gate imaging mode; the power management module is used to automatically adjust the power supply strategy of the battery when switching between the infrared passive imaging mode and the range gate imaging mode to optimize power consumption and battery life; the data storage module is used to store imaging data in the infrared passive imaging mode and the range gate imaging mode in real time; the wireless communication module is used to transmit data and remotely control with external devices.

[0014] Furthermore, the battery is a 18650 battery, which ensures a 40-minute working time at full power.

[0015] Furthermore, an active and passive integrated high-penetration imaging equipment also includes a self-test module, a backup power module, an autofocus module and an image enhancement module, which are respectively connected to the NX main control board signal.

[0016] Furthermore, the battery is a 18650 battery, and the battery 6 ensures a working time of 40 minutes at full load power.

[0017] Compared with the prior art, the active and passive integrated high-penetration imaging equipment described in the present invention has the following advantages: (1) The active and passive integrated high-penetration imaging equipment described in the present invention improves visibility, realizes visualization in low-visibility environments such as fire, smoke, fog, glass, curtains, and night, and at the same time realizes multi-functional integrated use.

[0018] (2) The active and passive integrated high-penetration imaging equipment described in the present invention has a compact structure inside the shell, which reduces the space area and is conducive to heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a working principle diagram of an active and passive integrated high-penetration imaging device according to an embodiment of the present invention; Figure 2 Schematic diagram of an active and passive integrated high-penetration imaging device according to an embodiment of the present invention Figure 1 ; Figure 3 Schematic diagram of an active and passive integrated high-penetration imaging device according to an embodiment of the present invention Figure 2 .

[0020] Description of reference numerals: 1-Lens; 2-Collimator; 3-Infrared lens; 4-Display screen; 5-Keyboard; 6-Battery; 7-Image intensifier; 8-Infrared detector; 9-Light source; 10-DDG timing control board; 11-NX main control board; 12-Heat sink. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0025] An active and passive integrated high-penetration imaging device, such as Figures 1 to 3 As shown, it includes a shell and a lens 1 of a light cone camera, a collimator 2, an infrared lens 3, a display screen 4, and an image intensifier 7 installed on the outside of the shell. A battery 6, an infrared detector 8, a light source 9, a DDG timing control board 10, and an NX main control board 11 are also installed inside the shell. The battery 6 is used to power the imaging equipment; the NX main control board 11 is respectively connected to the light cone camera, the DDG timing control board 10, the display screen 4, the keypad 5, the infrared detector 8 and the light source 9, and the DDG timing control board 10 is connected to the image intensifier 7 by signal.

[0026] In one or more embodiments, the lens 1 of the light cone camera, the image intensifier 7 and the infrared lens 3 of the infrared detector 8 are installed in parallel on the top of the housing, and the collimator 2 is fixedly installed on the top of the image intensifier 7, a switch is installed on the bottom of the housing, a display screen 4 is installed on one side, and a keypad 5 is installed inside the display screen 4. A plurality of parallel light sources 9 are arranged inside the housing, and a DDG timing control board 10 and an NX main control board 11 are installed on one side of the light source 9. The components inside the housing have a compact structure, which is conducive to reducing space; the trigger connection between the light source 9 and the image intensifier 7 is connected by an SMA plug, and the power input is 12V DC. The light source 9 and the collimator 2 are connected by an 18-beam optical fiber, the core diameter of the optical fiber is 200um, the cladding is 220um, the transmission is greater than 80%, the socket type of the beam-combining end is SMA905, and the LD end is a customized plug.

[0027] The NX main control board 11 provides the image intensifier 7 with a hot-swap function to achieve automatic connection of the device.

[0028] The NX main control board 11 and the display screen 4 are connected via a mipi dsi cable.

[0029] The NX main control board 11 is equipped with a mode switching module for automatically switching between the infrared passive imaging mode and the range gate imaging mode; the mode switching module automatically selects the optimal imaging mode according to the environmental visibility, target distance and light source intensity, and adjusts the working parameters of the image intensifier 7 through the DDG timing control board 10. The mode switching module dynamically adjusts the pulse frequency and intensity of the light source through the real-time data feedback of the infrared detector and the light cone camera to optimize the imaging effect in the range gate imaging mode.

[0030] The NX main control board 11 is equipped with an image fusion algorithm for real-time fusion of images in the infrared passive imaging mode and the range gate imaging mode to generate a high-definition composite image. The image fusion algorithm is optimized through a deep learning model and can automatically adjust the fusion weight according to environmental conditions and target features to improve imaging quality.

[0031] The NX main control board 11 is equipped with an adaptive exposure control module for automatically adjusting the exposure time of the light cone camera and the infrared detector according to the ambient light conditions and the target reflectivity to ensure the imaging brightness and contrast.

[0032] The DDG timing control board 10 is configured with a range gate control algorithm for dynamically adjusting the pulse width and delay time of the light source according to the target distance to improve the resolution and penetration capability in the range gate imaging mode. The communication between the DDG timing control board 10 and the image intensifier 7 is connected via a TypeA USB 3.0 cable.

[0033] The image intensifier 7 provides trigger output externally, the connector type is SMA, and the communication port type is microB USB 3.0. The power input of the image intensifier 7 is 12V DC. A filter is placed in front of the image intensifier 7.

[0034] The lens 1 of the light cone camera uses a short-focus lens, so that objects more than 10m away are relatively clear.

[0035] Collimator 2 uses a TIDS collimator, and the beam adjustment range is from 1m@10m in diameter to 0.3m@30m in diameter.

[0036] An active and passive integrated high-penetration imaging device also includes a switch, which is used to control the on and off of the power supply of the battery 6.

[0037] Keyboard 5 is an 8-key keyboard board. It includes 5 GPIO keys and 3 interrupt keys. The 3 interrupt keys are commonly used, which are used for taking photos, starting video recording, and ending video recording. The demonstration is 5 GPIO buttons, which are used for post-disaster data transmission and data demonstration.

[0038] Display 4 is as large as possible. There is an option on the upper left side of the interface of Display 4, the parameter configuration page. It provides contrast, working distance, MCP Gain, push-scan range adjustment, and displays the battery level.

[0039] An independent anti-drop rope is provided on the housing. Preferably, a heat sink 12 is also provided on the housing, and the heat sink 12 is convenient for discharging the heat generated inside the housing. A temperature control module is provided inside the housing, which is used to automatically adjust the working temperature of the infrared detector and the light source when switching between the infrared passive imaging mode and the range gate imaging mode to ensure imaging stability. The temperature control module is controlled by the NX main control board, and uses a temperature sensor to monitor the temperature of the infrared detector and the light source in real time, and dynamically adjusts it through the heat sink and the fan.

[0040] A power management module is provided inside the shell, which is used to automatically adjust the power supply strategy of the battery when switching between the infrared passive imaging mode and the range gate imaging mode, so as to optimize the power consumption and the battery life.

[0041] A data storage module is provided inside the shell for storing imaging data in the infrared passive imaging mode and the range gate imaging mode in real time. The NX main control board exports the data through a USB interface or a wireless transmission module.

[0042] The housing is provided with a wireless communication module for data transmission and remote control with external devices, supporting Wi-Fi, Bluetooth and 4G / 5G communication protocols. The wireless communication module is controlled by the NX main control board, capable of real-time transmission of imaging data and device status information, and supports remote control and firmware upgrades.

[0043] The shell is provided with a waterproof and dustproof structure on the outside to ensure the normal operation of the device in harsh environments. At the same time, a sealing ring and a waterproof coating are provided on the inside to prevent water vapor and dust from entering.

[0044] An active and passive integrated high-penetration imaging equipment also includes a self-test module, a backup power module, an autofocus module and an image enhancement module. The self-test module is controlled by the NX main control board, and can monitor the operating status of each module of the equipment in real time, and automatically alarm or switch to the backup module when a fault is found. The backup power module is controlled by the NX main control board, and can automatically switch to the backup power supply when the main battery power is less than 10%, and prompt the user to replace the battery in time through the display screen. The autofocus module is controlled by the NX main control board, and can adjust the focal length in real time according to the target distance and environmental conditions to ensure clear imaging effects at different distances. The image enhancement module is integrated through the NX main control board, and can automatically adjust the enhancement parameters according to the characteristics of the imaging data to ensure high-quality imaging effects in different environments.

[0045] Battery 6 is a 18650 battery. Battery 6 powers the lens, light cone camera, timing control board, image intensifier, infrared lens, infrared detector, light source, display, NX main control board, light source and other modules at the same time. Since the air call time of fire rescue personnel is about 40 minutes, the 18650 battery 6 ensures that the working time is 40 minutes at full load power. The working principle of an active and passive integrated high-penetration imaging equipment is: Press the switch and the battery will power each module.

[0046] The main control circuit of the NX main control board 11 controls the display screen 4, and each module is powered on, and then the video real-time stream is displayed (cyclic push-scan, push-scan). The overall control center of the entire equipment is the NX main control board 11. When the switch is turned on, the NX main control board 11, the display screen 4, and the light source 9 are turned on through DC input. Under the control of the NX main control board 11, the light cone camera, the light source 9, and the infrared detector 8 enter the standby state respectively. When switched to the infrared working mode, the display screen 4 switches to display the infrared image. Similarly, when switched to the laser range gate imaging, the screen displays the range gate imaging image 4.

[0047] Specifically, there is an option on the upper right side of the display screen interface. To view the album, press up or down. The color of the edge of the album option changes, indicating that it is selected. Press the middle confirmation key to enter the album interface to view the album. Press up, down, left, and right to view pictures or videos. After pressing the confirmation selection, if it is a video, there are four options on the interface. In this interface, the four options correspond to four buttons, fast forward (right button), fast rewind (left button), pause (confirmation button) and return (down button). Return option returns to the previous interface; if it is a picture, there is a left and right scroll bar with zoom in and out functions. The left and right buttons correspond to zoom in and out respectively. This interface also has a return option. The up and down buttons can select the return option (the color around the option changes when selected, indicating that this option is selected). Press the confirmation button to return to the previous interface. Press the confirmation button for 8 seconds to enter the parameter adjustment interface. This interface has various parameter options and a return option. Select return to return to the main interface. The main interface is a real-time video stream display. Press the photo, the camera works, take a photo, and the image is saved in the album. After completion, the real-time video stream is still displayed. Press the record button to enter the video mode. A red dot will appear in the upper left corner of the interface, indicating that the video is being recorded and showing the recording duration. Press the end record button to end the recording and return to the main interface. The three buttons for taking a photo, starting recording and ending recording have interrupt functions. Pressing these three buttons will enter the corresponding mode.

[0048] When smoke is the main visual influencing factor, the display screen 4 is switched to the mid-infrared imaging mode with one key, and the infrared and infrared detectors are started. At this time, the dynamic image of the infrared imaging is displayed on the screen.

[0049] When flame is the main visual influencing factor, the display screen 4 is switched to the range gate imaging mode with one key, and the light source, light cone camera, timing control board and image intensifier are started.

[0050] The range gate imaging is achieved by actively emitting a beam of medium-wave infrared laser. To avoid damage to distant targets, the laser has a 30° emission angle, a laser peak power of 1000W, and a pulse width of 10ns. When the laser passes through the flame and reaches the target, the weak signal laser reflected back enters the lens and is amplified by the image intensifier to achieve high signal-to-noise ratio output, with a magnification of 10 to the fifth power. An important point in this process is that the shutter of the image intensifier is only opened when the signal returned from the target distance enters the lens, and the shutter is closed when objects at other distances are reflected to the lens, so the target to be imaged can be accurately captured. At this time, the time control of the shutter opening and closing is controlled by the DDG timing control board circuit.

[0051] Because the light source, the main control board, the timing control board, etc. will generate a certain amount of heat during operation, a heat sink 12 is provided.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active and passive integrated high-penetration imaging device, characterized in that: It includes a shell and a lens, collimator, infrared lens, display screen, and image intensifier for a light cone camera installed on its outside. A battery, infrared detector, light source, DDG timing control board, and NX main control board are also installed inside the shell. The battery is used for power supply; the NX main control board is respectively connected to the light cone camera, DDG timing control board, display screen, keypad, infrared detector, and light source, and the DDG timing control board is connected to the image intensifier by signal.

2. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: The lens of the light cone camera, the image intensifier and the infrared lens of the infrared detector are installed in parallel on the top of the shell, and the collimator is fixedly installed on the top of the image intensifier. The switch is installed at the bottom of the shell, and the display screen is installed on one side. The keypad is installed inside the display screen. Several parallel light sources are arranged inside the shell, and the DDG timing control board and the NX main control board are installed on one side of the light source. The trigger connection between the light source and the image intensifier is connected by an SMA plug, and the light source and the collimator are connected by a combined optical fiber.

3. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: The NX main control board provides hot-swap function for the image intensifier, realizing automatic connection of the device.

4. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: The NX main control board is equipped with an adaptive exposure control module, a mode switching module and an image fusion algorithm.

5. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: The DDG timing control board is equipped with a distance gate control algorithm to dynamically adjust the pulse width and delay time of the light source according to the target distance.

6. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: A switch is also included, and the switch is used to control the on and off of the battery power supply.

7. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: The keypad is an 8-key keypad, including 5 GPIO keys and 3 interrupt keys.

8. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: A temperature control module, a power management module, a data storage module and a wireless communication module are also provided inside the housing. The temperature control module is used to automatically adjust the working temperature of the infrared detector and the light source when switching between the infrared passive imaging mode and the range gate imaging mode; The power management module is used to automatically adjust the battery power supply strategy when switching between the infrared passive imaging mode and the range gate imaging mode to optimize power consumption and battery life; The data storage module is used to store the imaging data in the infrared passive imaging mode and the range gate imaging mode in real time, and the wireless communication module is used to transmit data and conduct remote control with external devices.

9. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: The battery is a 18650 battery, which ensures a working time of 40 minutes at full load power.

10. The active and passive integrated high-penetration imaging equipment according to claim 1, characterized in that: It also includes a self-test module, a backup power supply module, an autofocus module and an image enhancement module which are respectively connected to the NX main control board signals.

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