CN112577607A - Double-light detection device, unmanned aerial vehicle and method - Google Patents
Double-light detection device, unmanned aerial vehicle and method Download PDFInfo
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- CN112577607A CN112577607A CN202011440698.0A CN202011440698A CN112577607A CN 112577607 A CN112577607 A CN 112577607A CN 202011440698 A CN202011440698 A CN 202011440698A CN 112577607 A CN112577607 A CN 112577607A
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 53
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 16
- 238000003384 imaging method Methods 0.000 claims abstract description 12
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
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- Signal Processing (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention discloses a double-light detection device, an unmanned aerial vehicle and a method, wherein the double-light detection device comprises the following components: the system comprises a double-light temperature measurement component and a thermal imager optical component; the thermal imager comprises a thermal imager optical assembly, a thermal imaging system and a dual-light temperature measuring assembly, wherein the dual-light temperature measuring assembly comprises a dual-light lens and a detector, the thermal imager optical assembly comprises a plug-in chopper and an optical filter, the optical filter is arranged on the plug-in chopper, the plug-in chopper is arranged between the dual-light lens and the detector, and a target object radiation signal converged by the dual-light lens is subjected to wave band selection through the plug-in chopper and then imaged in the detector. The problem of interference of vibration of the unmanned aerial vehicle on imaging quality is solved through air damping, adaptive replacement of a chopper and an optical filter in a thermal imager optical assembly is achieved through a plug-in chopper, and the limitation of an existing infrared application method is solved.
Description
Technical Field
The invention relates to the technical field of double-light temperature measuring cameras, in particular to a double-light detection device, an unmanned aerial vehicle and a method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
An infrared camera is a device that converts an image of the temperature distribution of a subject into a visible image by detecting infrared radiation of the subject, and performing signal processing, photoelectric conversion, and the like using an infrared thermal imaging technique. The infrared camera accurately quantifies the actually detected heat and images the whole object in a surface form in real time, so that the suspected fault area which is generating heat can be accurately identified. At present, infrared cameras are widely used in the fields of security inspection, power grid equipment inspection, human body temperature measurement, gas detection and the like.
The infrared equipment that has now adopts fixed mounting or hand-held type design more, along with unmanned aerial vehicle's development, the extensive extension that the application field of machine-carried miniaturized infrared equipment obtained, but current infrared equipment has the installation compatibility relatively poor when carrying out unmanned aerial vehicle and carries on, the image format is nonstandard, be difficult to pass through design problems such as unmanned aerial vehicle picture transmission, and non-refrigeration detector is because its imaging principle, when carrying on the use on unmanned aerial vehicle, unmanned aerial vehicle's vibrations can cause great interference to formation of image quality, especially because the imaging time section when unmanned aerial vehicle fast motion, can cause infrared image fuzzy, the peripheral condition such as halo that appears, greatly reduced infrared monitoring image's visualization and temperature measurement performance. Meanwhile, the infrared detector is high in cost, the existing infrared equipment mostly adopts the design of sealing an optical system of the infrared equipment, the matched optical filters cannot meet the use of a whole scene, the whole detector is often required to be replaced aiming at different detection targets, and the usability of the infrared camera is greatly reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a double-light detection device, an unmanned aerial vehicle and a method, the problem of interference of vibration of the unmanned aerial vehicle on imaging quality is solved through air damping, adaptive replacement of a chopper and an optical filter in a thermal imager optical assembly is realized through a plug-in chopper, and the limitation of the existing infrared application method is solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a dual light detection device, comprising: the system comprises a double-light temperature measurement component and a thermal imager optical component; the thermal imager comprises a thermal imager optical assembly, a thermal imaging system and a dual-light temperature measuring assembly, wherein the dual-light temperature measuring assembly comprises a dual-light lens and a detector, the thermal imager optical assembly comprises a plug-in chopper and an optical filter, the optical filter is arranged on the plug-in chopper, the plug-in chopper is arranged between the dual-light lens and the detector, and a target object radiation signal converged by the dual-light lens is subjected to wave band selection through the plug-in chopper and then imaged in the detector.
In a second aspect, the present invention provides an unmanned aerial vehicle, comprising: the dual light detection device of the first aspect.
In a third aspect, the present invention provides an operating method based on the above dual light detection apparatus, including:
a plug-in chopper is arranged between a double-light lens and a detector in the double-light temperature measuring assembly, a radiation signal of a target object is converged by the double-light lens and transmitted to the plug-in chopper, and the radiation signal is imaged in the detector after being subjected to wave band selection by the plug-in chopper.
Compared with the prior art, the invention has the beneficial effects that:
the invention innovatively develops a double-light detection device, designs an unmanned aerial vehicle carrying the double-light detection device, and provides a detection method of the unmanned aerial vehicle carrying the double-light detection device, wherein a double-light temperature measurement assembly and a thermal imager optical assembly are connected through air damping, and the partition frequency of the air damping corresponds to the vibration frequency of the unmanned aerial vehicle, so that the problem of interference of vibration of the unmanned aerial vehicle on imaging quality is solved; the thermal imager optical assembly adopts the plug-in chopper, and the plug-in chopper replaces optical filters with different absorption wavelength ranges according to different application scenes, so that the adaptive replacement of the chopper and the optical filters in the thermal imager optical assembly is realized, and the limitation of the existing infrared application method is solved.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a structural diagram of a dual optical detection device of an unmanned aerial vehicle according to embodiment 1 of the present invention;
fig. 2 is a structural diagram of a dual-optical temperature measurement assembly according to embodiment 1 of the present invention;
fig. 3 is a structural diagram of an optical assembly of a thermal imager according to embodiment 1 of the present invention;
fig. 4 is a structural diagram of a plug-in chopper provided in embodiment 1 of the present invention;
fig. 5 is a structural diagram of a power panel provided in embodiment 1 of the present invention;
the device comprises a cradle head interface track 11, a cradle head interface track 12, a cradle head interface 13, a shell, 14, a visible light lens window 15, an infrared lens window 21, a visible light lens 22, a power panel 23, an infrared lens 24, an imaging panel 25, a flexible cable 26, a detector interface 27, air damping dampers 31, a plug-in chopper 32, an infrared detector window 33, a cold screen 34, an optical filter 41, a chopper base 42 and a through hole.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and may be a fixed connection, or may be an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example 1
As shown in fig. 1-2, the present embodiment provides a dual optical detection device for an unmanned aerial vehicle, including: the system comprises a double-light temperature measurement component and a thermal imager optical component; the thermal imager comprises a thermal imager optical assembly, a thermal imaging system and a dual-light temperature measuring assembly, wherein the dual-light temperature measuring assembly comprises a dual-light lens and a detector, the thermal imager optical assembly comprises a plug-in chopper and an optical filter, the optical filter is arranged on the plug-in chopper, the plug-in chopper is arranged between the dual-light lens and the detector, and a target object radiation signal converged by the dual-light lens is subjected to wave band selection through the plug-in chopper and then imaged in the detector.
In the present embodiment, the dual light is a combination of visible light and infrared light, the dual light lens includes a visible light lens 21 and an infrared lens 23, and the detector includes a visible light detector and an infrared detector.
As shown in fig. 1, in this embodiment, the dual-optical temperature measurement component includes a pan-tilt interface track 11, a pan-tilt interface 12, a housing 13, a visible light lens window 14, and an infrared lens window 15;
an air damping damper 27 is arranged in the shell 13 of the double-light temperature measuring assembly, and the air damping damper 27 is used for being connected with the thermal imager optical assembly to reduce the interference of the vibration of the unmanned aerial vehicle on the imaging quality;
preferably, the air damping damper 27 is located below the infrared detector and the housing;
preferably, the cut-off frequency of the air shock absorption damper 27 is 70Hz to 200Hz, which corresponds to the vibration frequency of a common rotary wing type unmanned aerial vehicle.
Preferably, the housing 12 is an integrated aluminum alloy housing, and is used for mounting each module of the camera and connecting with an external cradle head.
In this embodiment, the cradle head interface track 11 is disposed on the side surface of the housing 13, the cradle head interface 12 is disposed on the cradle head interface track 11, the cradle head interface 12 integrates a communication interface and a power interface, and small-scale movement can be achieved through the cradle head interface track to adjust the mounting center of gravity of the cradle head.
As shown in fig. 2, the dual-light temperature measurement assembly further includes a visible light lens 21, a power panel 22, an infrared lens 23, an imaging panel 24, a flexible cable 25, and a detector interface 26;
in the embodiment, the visible light lens 21 and the infrared lens 23 are installed on the front surface of the housing 13, and are connected vertically side by side and located on the same central axis;
in the present embodiment, the infrared detector and the visible light detector are connected to the detector interface 26, and are also connected vertically in parallel and on the same central axis;
in the embodiment, the infrared detector and the imaging plate 24 are connected by two flexible cables 25, the two cables are respectively connected from the left and the right of the detector, and the middle position is used for installing the plug-in chopper.
Preferably, the infrared detector is a 640-resolution staring uncooled infrared detector;
preferably, the infrared lens is made of germanium materials and is plated with an antireflection film, the wave band of the infrared lens covers the range of 3-5 microns, and the infrared lens is a transmission type optical system;
preferably, the visible light lens is a 1080 high-definition camera;
preferably, the power panel is used for supplying power for the dual-light temperature measurement component.
As shown in fig. 3, in the present embodiment, the thermal imager optical assembly includes a plug-in chopper 31, a cold screen 33, and an optical filter 34;
the plug-in chopper 31 is positioned between the infrared lens 23 and the infrared detector window 32, and the filter 34 is installed on the plug-in chopper 31.
As shown in fig. 4, the plug-in chopper 31 includes a chopper base 41, the chopper base 41 is a clip-type structure with an upper part and a lower part rounded, and a through hole 42 is left at the lower part, and the through hole 42 is used for arranging an optical filter;
preferably, the filter 34 is a narrow-band filter with a thickness of less than 1mm and a diameter of 25.4/23.0 mm;
preferably, the optical filters in different absorption wavelength ranges can be replaced by opening the base clamping piece of the plug-in chopper;
preferably, the through hole is 26mm in diameter.
The thermal imager optical assembly can also be used for mounting and fixing a lens, switching an optical filter, an infrared detector, an infrared imaging circuit, a display, a power supply and the like; after the infrared radiation signals of the target object are converged by the infrared lens, the wavelength range is selected by the plug-in chopper, and imaging is carried out on a focal plane of the detector through a detector window 32 and a cold screen 33.
In this embodiment, as shown in fig. 5, the dual-light detection device for the unmanned aerial vehicle further includes an infrared imaging circuit, where the infrared imaging circuit includes a radio follower circuit, a high-input-impedance single-ended differential operational amplifier, a precision reference source, a power board, an AD analog-to-digital converter, and a LAYOUT; wherein:
the emitter follower circuit realizes the enhancement of the driving capability of the output of the signal source;
the single-break differential operational amplifier adopts an AD8138 chip, the reference voltage is 2.5V, the negative terminal voltage is 3V which is the average value of the output range of the detector which is 1.6-4.4V, and a sinusoidal signal of 1.6-4.4V is selected for simulation;
the operational amplifier type precise reference source adopts two types of precise voltage sources of 1V and 3V;
the AD acquisition adopts a single-chip four-way parallel sampling chip, and has smaller packaging size and packaging form;
LAYOUT is a noise performance design, and avoids overheating mainly by improving power supply power;
the power panel adopts 28V power supply, the output voltage is 1.2, 3.3, 2.5 and 1.8V digital voltage, and the analog voltage is 5, 8, 1.8 and-5V voltage.
In the embodiment, the board card for heat insulation and heat dissipation assistance adopts a multi-stage power supply filtering method, the phenomenon of excessive heating of power is fully considered, and a power supply scheme is improved; the smaller the difference value between the input electricity and the output electricity is, the smaller the working temperature is, so that the heat generation can be greatly reduced by changing the original 12V to 5V of the main power supply in the embodiment; the sum of all chip power consumptions remains within at most 1/2 of the power chip's maximum power consumption.
In addition, heat is conducted in a main heat production area by adopting a method of spreading copper in a large area, and direct heat conduction is avoided by adopting a method of deducting partial areas on the board card in a power supply area and a simulation area; the power supply of the analog chip adopts more than two stages of capacitance filtering and is close to the chip as much as possible; according to the recommended design of the thermal pads, the array type through holes are connected with the corresponding networks, so that not only is the heat dissipation of the chip facilitated, but also the connection and placement of the corresponding pads of the peripheral decoupling capacitors are facilitated.
In this embodiment, the system further comprises a main control circuit, wherein the main control circuit is composed of a voltage stabilizing power supply circuit and an output signal processing and analyzing chip circuit, the voltage stabilizing power supply adopts a 12V power supply, and after voltage reduction, voltage division and rectification, the voltage stabilizing chip provides +5V and 12V working voltages for the system, so that the single chip microcomputer system can normally work; the output signal processing and analyzing chip circuit consists of a crystal oscillator circuit, a reset circuit and a processing chip.
In further embodiments, there is also provided:
an unmanned aerial vehicle, comprising: the double-light detection device of embodiment 1, the double-light temperature measurement device is installed on the unmanned aerial vehicle through a holder interface.
A method of dual light detection, comprising:
a plug-in chopper is arranged between a double-light lens and a detector in the double-light temperature measuring assembly, a radiation signal of a target object is converged by the double-light lens and transmitted to the plug-in chopper, and the radiation signal is imaged in the detector after being subjected to wave band selection by the plug-in chopper.
In this embodiment, avoid because unmanned aerial vehicle's vibrations are to the interference of formation of image through air damping, can change corresponding light filter according to the different wavelength ranges of the gas of being surveyed through the plug-in chopper, can realize the infrared camera of convenient change chopper subassembly in order to realize the infrared wide application on unmanned aerial vehicle.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a two optical detection devices of unmanned aerial vehicle which characterized in that includes: the system comprises a double-light temperature measurement component and a thermal imager optical component; the thermal imager comprises a thermal imager optical assembly, a thermal imaging system and a dual-light temperature measuring assembly, wherein the dual-light temperature measuring assembly comprises a dual-light lens and a detector, the thermal imager optical assembly comprises a plug-in chopper and an optical filter, the optical filter is arranged on the plug-in chopper, the plug-in chopper is arranged between the dual-light lens and the detector, and a target object radiation signal converged by the dual-light lens is subjected to wave band selection through the plug-in chopper and then imaged in the detector.
2. The dual optical detection device of claim 1, wherein the dual optical temperature measurement assembly is connected with the thermal imager optical assembly through air damping.
3. The dual optical detection device of claim 1, wherein the dual optical temperature measurement assembly comprises a pan/tilt interface track, a pan/tilt interface, and a housing; and a cradle head interface track is arranged on the side surface of the shell, and a cradle head interface is arranged on the cradle head interface track.
4. A twin-light detector for unmanned aerial vehicle as claimed in claim 1, wherein the twin-light lens includes a visible light lens and an infrared lens, and the detector includes a visible light detector and an infrared detector.
5. The dual optical detection device of claim 4, wherein the visible light lens and the infrared lens, and the infrared detector and the visible light detector are connected vertically and side by side and are located on the same central axis.
6. The dual optical detection device of claim 1, wherein the dual optical temperature measurement assembly further comprises an imaging plate and a flexible cable; the detector and the imaging plate are connected through a flexible cable, and the flexible cable is connected from two sides of the detector respectively.
7. The unmanned aerial vehicle double-light detection device of claim 1, wherein the plug-in chopper comprises a chopper base, the chopper base is of a clip type structure with an upper part and a lower part being rounded, and a through hole is reserved in the lower part and used for installing the optical filter.
8. An unmanned aerial vehicle, comprising: a dual light detection arrangement as claimed in any one of claims 1 to 7.
9. The drone of claim 8, wherein the dual light temperature measurement device is carried on the drone by a pan/tilt interface.
10. A method of operating a dual light detection assembly as claimed in any one of claims 1 to 7, including:
a plug-in chopper is arranged between a double-light lens and a detector in the double-light temperature measuring assembly, a radiation signal of a target object is converged by the double-light lens and transmitted to the plug-in chopper, and the radiation signal is imaged in the detector after being subjected to wave band selection by the plug-in chopper.
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| CN202011440698.0A CN112577607A (en) | 2020-12-11 | 2020-12-11 | Double-light detection device, unmanned aerial vehicle and method |
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| CN202011440698.0A CN112577607A (en) | 2020-12-11 | 2020-12-11 | Double-light detection device, unmanned aerial vehicle and method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208134646U (en) * | 2018-05-07 | 2018-11-23 | 广西壮族自治区地理信息测绘院 | A kind of 2.5 hundred million pixel oblique photograph camera of UAV system |
| CN110487409A (en) * | 2019-07-09 | 2019-11-22 | 国家海洋局温州海洋环境监测中心站 | The infrared water surface temperature measurement accuracy bearing calibration of unmanned plane based on thumb wheel rotating mechanism |
| CN210093355U (en) * | 2019-09-10 | 2020-02-18 | 深圳市大疆创新科技有限公司 | Imaging device and unmanned aerial vehicle |
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2020
- 2020-12-11 CN CN202011440698.0A patent/CN112577607A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208134646U (en) * | 2018-05-07 | 2018-11-23 | 广西壮族自治区地理信息测绘院 | A kind of 2.5 hundred million pixel oblique photograph camera of UAV system |
| CN110487409A (en) * | 2019-07-09 | 2019-11-22 | 国家海洋局温州海洋环境监测中心站 | The infrared water surface temperature measurement accuracy bearing calibration of unmanned plane based on thumb wheel rotating mechanism |
| CN210093355U (en) * | 2019-09-10 | 2020-02-18 | 深圳市大疆创新科技有限公司 | Imaging device and unmanned aerial vehicle |
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