An infrared processing device and system

Abstract

The application relates to the technical field of infrared processing, and discloses an infrared processing device and system, which comprises a collection module and a storage module; the collection module comprises an optical lens group unit, a switching unit and a data collection unit; the switching unit is configured to control different filter subunits in the optical lens group unit to periodically switch, so that the optical lens group unit periodically acquires first-waveband light and second-waveband light of infrared light; the data collection unit is used for generating first-waveband image data and second-waveband image data respectively according to the first-waveband light and the second-waveband light; and the storage module is used for storing the first-waveband image data and the second-waveband image data. The first-waveband light and the second-waveband light of the infrared light are periodically acquired by the optical lens group unit in the collection module, higher-quality and higher-definition image data are obtained, and the image data is directly stored in the storage module, so that negative effects of compression on the quality of the image data are avoided.

Description

Technical Field

[0001] This application relates to the field of infrared processing technology, and in particular to an infrared processing device and system. Background Technology

[0002] Existing infrared thermometry devices used in rockets and other spacecraft are affected by wireless communication channels, making it difficult to transmit high-resolution images for measuring the temperature of the target. As a result, the images obtained are usually of low quality, making it difficult to obtain more accurate temperature readings of the target.

[0003] In summary, there is a need to provide an infrared processing device and system capable of obtaining higher quality infrared images. Summary of the Invention

[0004] To address the above problems, this application proposes an infrared processing device and system.

[0005] In a first aspect, embodiments of this application propose an infrared processing device, comprising: a data acquisition module and a storage module; The acquisition module includes an optical lens group unit, a switching unit, and a data acquisition unit; The switching unit is configured to control the periodic switching of different filter subunits in the optical lens group unit, so that the optical lens group unit periodically acquires the first band light and the second band light of the infrared light. The data acquisition unit is used to generate first-band image data and second-band image data respectively based on the first-band light and the second-band light. The storage module is used to store the first band image data and the second band image data.

[0006] Preferably, the optical lens assembly unit includes: a lens assembly subunit, a first filter subunit, and a second filter subunit; The lens assembly subunit is used to acquire infrared light emitted by the target. The first filter subunit is used to obtain the first band light from the infrared light; The second filter subunit is used to extract the second band light from the infrared light; The first filter subunit and the second filter subunit are arranged along a first direction, which is perpendicular to the emission direction of the infrared light; The input surface of the first filter subunit is parallel to the input surface of the second filter subunit, and the output surface of the first filter subunit is parallel to the output surface of the second filter subunit.

[0007] Preferably, the switching unit includes an electromagnetic drive subunit; the electromagnetic drive subunit is used to control the first filter subunit and the second filter subunit to periodically move to a preset position.

[0008] Preferably, the data acquisition unit includes an infrared focal plane sensor; the infrared focal plane sensor is used to generate first band image data based on the radiation energy of the first band light, or to generate second band image data based on the radiation energy of the second band light.

[0009] Preferably, the storage module includes: a storage unit and a protective casing; the storage unit is placed inside the protective casing; The storage unit includes solid-state storage particles; The protective shell is made of cobalt-manganese steel.

[0010] Preferably, it further includes a control module; the control module is used to receive the first band image data or the second band image data and send it to the storage module.

[0011] Preferably, the control module is configured to control the acquisition module and the storage module to start in response to a takeoff command; and / or to control the acquisition module and the storage module to stop working in response to a separation command.

[0012] Preferably, the system further includes a power management module and a power supply module, wherein the power management module is connected to the acquisition module, the control module, and the storage module; and the power supply module is connected to the power management module. The power management module is used to convert the received power supply voltage to provide operating voltage to the acquisition module, the control module and the storage module; The power module is used to provide the power supply voltage to the power management module; The power module includes: dry cell batteries.

[0013] Preferably, it further includes: a processing module; the processing module is used to determine the temperature of the target body based on the first band image data and the second band image data.

[0014] Secondly, embodiments of this application propose a propulsion system including an infrared processing device as described in any of the first aspects.

[0015] The advantages of this application are: the first and second bands of infrared light are periodically acquired by the optical lens group unit in the acquisition module; then, the first and second bands of image data are generated by the data acquisition unit using the first and second bands of light respectively, thereby obtaining image data with higher quality and better clarity; the first and second bands of image data are directly stored in the storage module, thereby avoiding the negative impact of compression on the quality of the image data. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of an infrared processing device provided in this application; Figure 2 This is a schematic diagram of the optical lens assembly of an infrared processing device provided in this application; Figure 3 This is a schematic diagram of another infrared processing device provided in this application; Figure 4 This is a schematic diagram of the 1-14μm blackbody radiation curve of an infrared processing device provided in this application; Figure 5 This is a schematic diagram of the spectral response curve of a sensor in an infrared processing device provided in this application. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0018] Firstly, to address the aforementioned problems, embodiments of this application propose an infrared processing device, such as... Figure 1 As shown, it includes: a data acquisition module 100 and a storage module 200; as Figure 1As shown, the acquisition module 100 includes an optical lens assembly unit 101, a switching unit 102, and a data acquisition unit 103. The switching unit is configured to control the periodic switching of different filter sub-units in the optical lens assembly unit, so that the optical lens assembly unit periodically acquires the first and second bands of infrared light. The data acquisition unit is used to generate first-band image data and second-band image data respectively based on the first and second bands of light. The storage module 200 is used to store the first-band image data and the second-band image data. The first and second bands of light are generated by the radiant energy of infrared light after passing through the optical lens assembly unit.

[0019] like Figure 2 The optical lens assembly unit shown includes: a lens assembly subunit 111, a first filter subunit 112, and a second filter subunit 113; the lens assembly subunit 111 is used to acquire infrared light emitted by the target object; the first filter subunit 112 is used to acquire a first wavelength of light from the infrared light; the second filter subunit 113 is used to acquire a second wavelength of light from the infrared light; the first filter subunit 112 and the second filter subunit 113 are arranged along a first direction, which is perpendicular to the emission direction of the infrared light; the input surface of the first filter subunit 112 is parallel to the input surface of the second filter subunit 113, and the output surface of the first filter subunit 112 is parallel to the output surface of the second filter subunit 113. The first direction is perpendicular to either the emission direction or the incident direction of the infrared light.

[0020] The lens assembly subunit 111 includes a replaceable lens, which comprises an optical lens group. The embodiments of this application use one lens assembly subunit 111 and two filter subunits (a first filter subunit 112 and a second filter subunit). Compared to using two lens assembly subunits and two filter subunits, i.e., one filter subunit corresponding to one filter subunit, the embodiments of this application can avoid errors between the first and second bands of infrared light acquired due to actual optical errors between the two lens assembly subunits, thereby improving the accuracy and precision of the acquired data.

[0021] The switching unit includes an electromagnetic drive subunit; the electromagnetic drive subunit is used to control the first filter subunit 112 and the second filter subunit 113 to periodically move to a preset position.

[0022] The period during which the first filter subunit 112 and the second filter subunit 113 move to the preset position can be set by a preset period, including 10 milliseconds, 20 milliseconds, 30 milliseconds, 40 milliseconds, and 50 milliseconds. Therefore, the electromagnetic drive subunit can control the first filter subunit 112 and the second filter subunit 113 to switch to the preset position within 10 milliseconds, 20 milliseconds, 30 milliseconds, 40 milliseconds, or 50 milliseconds. The first filter subunit 112 and the second filter subunit 113 include different filters. The preset position includes a position between the lens assembly subunit 111 and the data acquisition unit that enables the data acquisition unit to acquire light of the first or second wavelength band.

[0023] The data acquisition unit includes an infrared focal plane sensor; the infrared focal plane sensor is used to generate first-band image data based on the radiation energy of first-band light, or to generate second-band image data based on the radiation energy of second-band light.

[0024] like Figure 3 As shown, the storage module 200 includes: a storage unit and a protective casing; the storage unit is placed inside the protective casing; the storage unit includes solid-state storage particles; the material of the protective casing includes: cobalt-manganese steel.

[0025] like Figure 3 As shown, the embodiments of this application also include a control module; the control module is used to receive first band image data or second band image data and send it to the storage module 200.

[0026] like Figure 3 As shown, the control module 300 is used to control the acquisition module 100 and the storage module 200 to start in response to a takeoff command; and / or to control the acquisition module 100 and the storage module 200 to stop working in response to a separation command.

[0027] The takeoff command is generated when the device leaves the Earth's surface; the separation command is generated during flight when the various parts separate from the main propulsion unit to which the device is attached. These parts include: escape towers, boosters, interstages, fairings, and propulsion systems.

[0028] The control module receives takeoff and separation commands from the system equipment. Upon receiving the takeoff command, the control module sends a start command to the acquisition module 100 and the storage module 200, receives the first-band image data and / or second-band image data output by the acquisition module 100, and outputs the first-band image data and / or second-band image data to the storage module 200. The first-band and second-band image data are both raw images. Upon receiving the separation command, the control module sends a stop command to the acquisition module 100 and the storage module 200 to stop acquisition and storage.

[0029] After receiving a start command from the control module, the acquisition module 100 periodically switches the positions of the first filter subunit 112 and the second filter subunit 113 to acquire radiation energy in two different bands (first band light and second band light) and image them on the infrared focal plane sensor of the data acquisition unit, generating first band image data and second band image data. The first band image data and second band image data are then output to the control module. Upon receiving a stop command from the control module, the acquisition module 100 stops acquiring the first band image data and second band image data.

[0030] After receiving the start command from the control module, the storage module 200 begins to receive the first-band image data and the second-band image data sent by the control module. After receiving the stop command from the control module, it stops receiving the first-band image data and the second-band image data and stops storing them.

[0031] like Figure 4 As shown, the embodiments of this application also include a power management module 400 and a power supply module 500. The power management module 400 is connected to the acquisition module 100, the control module, and the storage module 200; the power supply module 500 is connected to the power management module 400; the power management module 400 is used to convert the received power supply voltage to provide operating voltage to the acquisition module 100, the control module, and the storage module 200; the power supply module 500 is used to provide power supply voltage to the power management module 400; the power supply module 500 includes: a dry cell battery.

[0032] In the embodiments of this application, image acquisition and storage are achieved through an acquisition module 100, a control module, a storage module 200, and an electrical management module 400.

[0033] like Figure 3 As shown, embodiments of this application further include: a working switch and a debugging interface; the working switch can be connected to one of the control module, the power management module 400, and the power module 500; the debugging interface can be connected to one of the control module, the power management module 400, and the power module 500. The debugging interface can also be used for charging.

[0034] The embodiments of this application further include: a processing module; the processing module is used to determine the temperature of the target body based on the first band image data and the second band image data.

[0035] The processing module is connected to the storage module 200 via a data transmission line after the storage module 200 is recycled.

[0036] The implementation of this application is based on the principle of dual-color temperature measurement and adopts binocular imaging technology. Binocular imaging is achieved through the lens group subunit 111, the first filter subunit 112 and the second filter subunit 113 in the optical lens group unit, thereby enabling high-precision temperature measurement in the range of 0-500℃.

[0037] The implementation method of this application can be used as an independent system on a rocket, which can be self-powered through the power management module 400 and the power module 500, and independently complete the acquisition and storage of infrared images.

[0038] In this embodiment, the device is connected to the rocket's operating port via a cable. This cable can be used for switching on / off, debugging, charging, and data reading.

[0039] The infrared focal plane array sensor in the data acquisition unit can be an uncooled vanadium oxide sensor. The imaging band is determined based on the blackbody radiation curve and the spectral response curve of the actual uncooled vanadium oxide sensor. Figure 4 The diagram shows a blackbody radiation curve from 1 to 14 μm, where T is the temperature, the spectral range is from 1 μm to 14 μm, and 5 to 14 μm can meet the temperature measurement requirements from 273 K to 573 K (Kelvin). The band is mainly concentrated in the mid-infrared region.

[0040] Therefore, for targets requiring medium and low temperature measurement, a spectral response curve such as... Figure 5 The uncooled vanadium oxide sensor shown retains more detailed information, ensuring accurate temperature measurement. According to... Figure 5 The spectral response curves shown can be used to select two spectral bands, 8-10.5μm and 11.5μm-14μm, as the output spectral bands of the first filter subunit 112 and the second filter subunit 113 for colorimetric temperature measurement.

[0041] The temperature measurement principle of this application is dual-color temperature measurement. The dual-color temperature measurement method measures the radiation integral of a target (object) in two wavelength bands, and then determines the object's radiation temperature by their ratio. Generally, two wavelength bands are selected, the radiation energy within both bands is collected, they are converted into electrical signals, and then calculated and compared. The temperature of the target is then determined by the ratio. In this application, the first filter subunit 112 and the second filter subunit 113 are periodically and rapidly moved to preset positions by a switching unit, thereby acquiring the radiation energy within the two wavelength bands.

[0042] Let the blackbody radiant exitance be M0(λ,T), then the spectral irradiance of a target with temperature T and emissivity ε(λ) on the detector surface is: (1) Where D and f' are the aperture and focal length of the optical system, respectively; τ aτ(λ) and τ0(λ) are the spectral transmittance of the atmosphere and the optical system, respectively, where λ is the wavelength and ε is the emissivity.

[0043] In the two temperature measurement bands [λ] 1min , λ 1max ] and [λ 2min , λ 2max Within [the area], the signal levels output by the detector are as follows: (2) Among them, R V1 (λ) and R V2 (λ) represents the spectral responsivity of the detectors in the two temperature measurement bands, respectively; A is the area of ​​the detector element, d is the integral sign, and λ 1min λ is the minimum value of the first band. 1max λ is the maximum value of the first band. 2min The minimum value for the second band, λ 2max This is the maximum value for the second band.

[0044] In two-color thermometry, the target is typically assumed to be a blackbody or a graybody, i.e., ε(λ) is a constant. In this case, the ratio of the two-band signals is defined as: (3) Assuming the temperature measurement distance is limited, the influence of atmospheric transmittance is negligible, and further utilization of the optical system in the [λ] band... 1min , λ 1max ] and [λ 2min , λ 2max Average transmittance within and Equation (3) can be simplified to: (4) As can be seen from equation (4), as long as the voltage values ​​U1(T) and U2(T) of the target radiation received by the detector in different bands are accurately measured, the spectral response function R of the detector in different bands can be measured and fitted. V1 (λ) and R V2 (λ), and the optical system in the temperature measurement band [λ] 1min , λ 1max] and [λ 2min , λ 2max Average transmittance within and Substituting into equation (4), Q(T) can be obtained, where Q is the ratio. Using a temperature-adjustable blackbody to simulate the radiation target, and measuring the radiation energy of the two bands with a detector, the relationship curve between the dual-band output signal ratio Q(T) and temperature T can be calibrated. Based on the relationship between Q(T) and T, the temperature T of the target radiation source can be obtained.

[0045] If two images g1(x, y) and g2(x, y) are actually obtained, then the temperature image T(x, y) can be obtained from the ratio of the input images: (5) Where g1 is the gray value of the first image, g2 is the gray value of the second image, x represents the horizontal coordinate of the pixel, and y represents the vertical coordinate of the pixel.

[0046] A dual-color thermometer determines an object's temperature by measuring the infrared radiation energy emitted by an object in two different spectral ranges and calculating the ratio of these two energies. This method does not rely on the object's absolute radiation energy, but rather utilizes the stability of the radiation energy ratio to reduce the influence of factors such as emissivity and eliminate environmental interference (e.g., dust, smoke, steam). Therefore, dual-color thermometers can maintain higher measurement accuracy and stability in complex or harsh environments.

[0047] The processing module determines the temperature of the target body using the first-band image data and the second-band image data in the manner described above.

[0048] Secondly, embodiments of this application propose a propulsion system including an infrared processing device as described in any of the first aspects.

[0049] In the embodiments of this application, the first and second bands of infrared light are periodically acquired by the optical lens group unit in the acquisition module; then, the first and second bands of image data are generated by the data acquisition unit using the first and second bands of light, respectively, thereby obtaining image data with higher quality and better clarity; the first and second bands of image data are directly stored in the storage module, thereby avoiding the negative impact of compression on the quality of image data, achieving a measurement accuracy of ±5% (standard blackbody), and a temperature measurement range of 273K to 673K.

[0050] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An infrared processing device, characterized in that, include: Acquisition module and storage module; The acquisition module includes an optical lens group unit, a switching unit, and a data acquisition unit; The switching unit is configured to control the periodic switching of different filter subunits in the optical lens group unit, so that the optical lens group unit periodically acquires the first band light and the second band light of the infrared light. The data acquisition unit is used to generate first-band image data and second-band image data respectively based on the first-band light and the second-band light. The storage module is used to store the first band image data and the second band image data.

2. The infrared processing device according to claim 1, characterized in that, The optical lens assembly unit includes: a lens assembly subunit, a first filter subunit, and a second filter subunit; The lens assembly subunit is used to acquire infrared light emitted by the target. The first filter subunit is used to obtain the first band light from the infrared light; The second filter subunit is used to extract the second band light from the infrared light; The first filter subunit and the second filter subunit are arranged along a first direction, which is perpendicular to the emission direction of the infrared light; The input surface of the first filter subunit is parallel to the input surface of the second filter subunit, and the output surface of the first filter subunit is parallel to the output surface of the second filter subunit.

3. The infrared processing device according to claim 2, characterized in that, The switching unit includes an electromagnetic drive subunit; the electromagnetic drive subunit is used to control the first filter subunit and the second filter subunit to periodically move to a preset position.

4. The infrared processing device according to claim 2, characterized in that, The data acquisition unit includes an infrared focal plane sensor; the infrared focal plane sensor is used to generate first band image data based on the radiation energy of the first band light, or to generate second band image data based on the radiation energy of the second band light.

5. The infrared processing device according to claim 1, characterized in that, The storage module includes: a storage unit and a protective casing; the storage unit is placed inside the protective casing. The storage unit includes solid-state storage particles; The protective shell is made of cobalt-manganese steel.

6. The infrared processing device according to claim 1, characterized in that, It also includes a control module; the control module is used to receive the first band image data or the second band image data and send it to the storage module.

7. The infrared processing device according to claim 6, characterized in that, The control module is configured to, in response to a takeoff command, control the acquisition module and the storage module to start; and / or, in response to a separation command, control the acquisition module and the storage module to stop working.

8. The infrared processing device according to claim 6, characterized in that, It also includes a power management module and a power supply module, wherein the power management module is connected to the acquisition module, the control module, and the storage module; and the power supply module is connected to the power management module. The power management module is used to convert the received power supply voltage to provide operating voltage to the acquisition module, the control module and the storage module; The power module is used to provide the power supply voltage to the power management module; The power module includes: dry cell batteries.

9. The infrared processing device according to claim 5, characterized in that, Also includes: The processing module is used to determine the temperature of the target body based on the first band image data and the second band image data.

10. A propulsion system, characterized in that, Including the infrared processing device as described in any one of claims 1 to 9.

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