CN112565557A

CN112565557A - Thermal imaging system

Info

Publication number: CN112565557A
Application number: CN201910910429.7A
Authority: CN
Inventors: 杨金华
Original assignee: Hangzhou Hikmicro Sensing Technology Co Ltd
Current assignee: Hangzhou Hikmicro Sensing Technology Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2021-03-26

Abstract

The invention provides a thermal imager, which comprises a shell, a visible light assembly, a thermal imaging assembly, a battery bin assembly and a control module which are arranged in the shell, and an eyepiece arranged at the rear end of the shell; video signals collected by the thermal imaging assembly and/or the visible light assembly are input to the control module, converted into digital signals through the control module and output to the ocular lens; the thermal imaging assembly comprises a thermal imaging lens and a multiplying lens, the thermal imaging lens is arranged at the front end of the shell, and the multiplying lens is detachably connected to the thermal imaging lens through a lens bayonet on the thermal imaging lens; the thermal imaging assembly and the battery bin assembly are symmetrically arranged on two sides of the shell in the width direction, the visible light assembly is arranged between the thermal imaging assembly and the battery bin assembly, the diameters of the thermal imaging assembly and the battery bin assembly are corresponding, and the diameter of the visible light assembly is smaller than that of the thermal imaging assembly.

Description

Thermal imaging system

Technical Field

The present invention relates to a thermal imager.

Background

Nowadays to thermal imaging system function demand more and more, multi-functional thermal imaging system is the bulky mostly on the market, and weight is heavy, and the fixed bolster formula is installed, and unable fine adaptation removes the control scene. Conventional thermal imaging single optical equipment has single function and cannot meet the requirement of simultaneous monitoring at daytime and night, so that a multifunctional dual-photothermal imager needs to be designed to meet the requirements of multispectral and portable.

Disclosure of Invention

In view of the above, the present invention is directed to a thermal imaging apparatus, which decomposes a thermal imaging lens covering a large observation range into a base lens with a lower magnification and a zoom lens in the form of an accessory, so as to reduce the volume and weight occupied by the thermal imaging module, improve the utilization rate of the thermal imaging lens as the base lens, and greatly improve the debugging efficiency of the thermal imaging module during the use process.

One embodiment of the invention provides a thermal imager, which comprises a shell, a visible light assembly, a thermal imaging assembly, a battery bin assembly, a circuit board and a control module which are arranged in the shell, and two eyepieces arranged at the rear end of the shell;

video signals collected by the thermal imaging assembly and/or the visible light assembly are input to the control module, converted into digital signals through the control module and output to the eyepiece, and the battery compartment assembly provides power for the visible light assembly (20), the thermal imaging assembly and the control module through the circuit board;

the thermal imaging assembly comprises a thermal imaging lens and a multiplying lens, the thermal imaging lens is arranged at the front end of the shell, and the multiplying lens is detachably connected to the thermal imaging lens through a lens bayonet on the thermal imaging lens;

the thermal imaging assembly and the battery bin assembly are symmetrically arranged on two sides of the shell in the width direction, the visible light assembly is arranged between the thermal imaging assembly and the battery bin assembly, the diameters of the thermal imaging assembly and the battery bin assembly are corresponding, and the diameter of the visible light assembly is smaller than that of the thermal imaging assembly.

Preferably, further comprising:

the laser ranging assembly is arranged between the thermal imaging assembly and the battery bin assembly and is positioned below the visible light assembly.

Preferably, the housing comprises: a middle shell with openings at the front end and the rear end, a front shell covering the front end of the middle shell, and a rear shell covering the rear end of the middle shell,

the battery compartment assembly comprises a battery compartment arranged in the middle shell and a battery cover which can detachably seal the battery compartment, the visible light assembly comprises a visible light lens,

thermal imaging camera lens and battery cover set up symmetrically before the both sides on the width direction of shell, visible light camera lens and laser range finding subassembly set up in the center of preceding shell to be located thermal imaging subassembly with between the battery compartment subassembly, the eyepiece sets up on the backshell.

Preferably, the battery cover is in threaded connection with the battery compartment.

Preferably, the key further comprises a silica gel coating layer wrapping the outer surface of the middle shell, and a plurality of keys arranged on the upper surface of the middle shell,

each key comprises a key component and a keycap positioned at the top end of the key component, and the keycaps are integrally formed on the silica gel cladding.

Preferably, the silica gel cladding is provided with a holding part, the holding part corresponds to the left side and the right side of the middle shell, and the keycap is arranged at the tail end of the holding part.

Preferably, the digital signal is output to the eyepiece through the display module.

Preferably, further comprising a proximity switch assembly, the proximity switch assembly comprising a sensor disposed on the rear housing,

the proximity switch assembly is connected with the circuit board, and the controller turns on or off the power supply of the display module according to the detection signal of the sensor.

Preferably, the rear shell has a platform disposed between the two eyepieces, the platform being recessed toward the interior of the housing in a vertical direction,

the thermal imager further comprises an input/output interface disposed on the sinking platform.

Preferably, the upper surface of the middle shell further comprises an antenna shell, the antenna shell is made of a non-metal material, and an antenna is arranged in the antenna shell.

According to the technical scheme, in a normal situation, the observation requirement of a far range is low in the use condition of the thermal imaging device, if the thermal imaging lens covering a large observation range is configured for the requirement of low occupation ratio, the occupied volume and weight of the thermal imaging component can be increased, the thermal imaging lens covering the large observation range is decomposed into the basic lens with a low multiple and the multiplying lens in an accessory form, the occupied volume and weight of the thermal imaging component can be reduced, the utilization rate of the thermal imaging lens serving as the basic lens is improved, and the debugging efficiency of the thermal imaging component in the use process can be greatly improved.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is a schematic structural view of a thermal imaging camera of the present invention.

Fig. 2 is a schematic structural view of a front case of the thermal imaging camera of the present invention.

Fig. 3 is a schematic structural view of a middle case of the thermal imaging camera of the present invention.

Fig. 4 is a schematic structural view of a rear case of the thermal imaging camera of the present invention.

Fig. 5 is a schematic circuit diagram of the thermal imager of the present invention.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, the drawings are only schematic representations of the parts relevant to the invention, and do not represent the actual structure of the product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.

In order to solve the problems that a thermal imaging camera in the prior art is large in size and heavy in weight and cannot meet requirements of multi-spectrum and portability, the invention aims to provide the thermal imaging camera, and the thermal imaging camera covering a large observation range is decomposed into a basic lens with a lower multiple and a doubling mirror serving as an accessory form, so that the size and the weight occupied by a thermal imaging component can be reduced, the utilization rate of the thermal imaging camera serving as the basic lens is improved, and the debugging efficiency of the thermal imaging component in the using process can be greatly improved.

Fig. 1 is a schematic structural view of a thermal imaging camera of the present invention. Fig. 2 is a schematic structural view of a front case of the thermal imaging camera of the present invention. Fig. 5 is a schematic circuit diagram of the thermal imager of the present invention. As shown in fig. 1, 2 and 5, one embodiment of the present invention provides a thermal imaging camera, which includes a housing 10, a visible light assembly 20, a thermal imaging assembly 30, a battery compartment assembly 40, a circuit board 50 and a control module (not shown) disposed in the housing 10, and two eyepieces 60 disposed at the rear end of the housing 10.

The video signals collected by the thermal imaging assembly 30 and/or the visible light assembly 20 are input to the control module, and are converted into digital signals by the control module to be output to the eyepiece 60 for the user to observe, and the battery chamber assembly 40 supplies power to the components connected with the circuit board 50, such as the visible light assembly 20, the thermal imaging assembly 30, the control module, and the like.

The thermal imaging assembly 30 includes a thermal imaging lens 31 and a zoom lens (not shown), the thermal imaging lens 31 is disposed at the front end of the housing 10, and the zoom lens is detachably connected to the thermal imaging lens 31 through a lens mount 32 on the thermal imaging lens 31.

The thermal imaging assembly 30 and the battery compartment assembly 40 are symmetrically arranged on two sides of the housing 10 in the width direction, the visible light assembly 20 is arranged between the thermal imaging assembly 30 and the battery compartment assembly 40, the diameters of the thermal imaging assembly 30 and the battery compartment assembly 40 correspond, and the diameter of the visible light assembly 20 is smaller than that of the thermal imaging assembly 30.

In the present embodiment, the visible light assembly 20 is used for video monitoring in daylight or low light conditions for observing details of the target; the thermal imaging assembly 30 is used for nighttime imaging to obtain a thermal image. The visible light assembly 20 and the thermal imaging assembly 30 can operate independently or as a dual optical fusion.

The control module may include, for example, a controller, a memory, a video codec module, and the like, and the controller may convert the video signal collected by the visible light module 20 and/or the thermal imaging module 30 into a digital image signal through the video codec module and store the digital image signal in the memory. The digital image is imaged by the video output and the human eye can observe the imaging effect through the eyepiece 60.

Preferably, the lens of the visible light assembly 20 may adopt a fixed focus scheme, and the lens of the thermal imaging assembly 30 may adopt an electric focusing scheme, so as to facilitate observation of targets at different distances.

In order to be suitable for a wider range of viewing in existing thermal imaging cameras, it is often necessary to provide the thermal imaging assembly with a lens or lens group that covers a wider range, which greatly increases the volume and weight occupied by the thermal imaging assembly. Therefore, the thermal imaging assembly tends to become the largest volume-occupying component of the thermal imaging camera, and thus becomes a major factor affecting the volume of the thermal imaging camera as a whole. In the present embodiment, the thermal imaging assembly 30 includes a thermal imaging lens 31 and a zoom lens, wherein the thermal imaging lens 31 can be selected as a basic lens with a lower magnification, and the observation range can only cover most daily use cases, such as 50mm, 75mm, 100mm, etc., and when the thermal imaging lens 31 as the basic lens cannot satisfy the observation range, the observation range can be increased by the zoom lens to satisfy the requirement.

In general, the observation requirement of a longer range is lower in the use condition of the thermal imaging instrument, and if a thermal imaging lens covering a larger observation range is configured for the requirement of lower occupation ratio, the volume and the weight occupied by the thermal imaging component are increased.

In the present embodiment, the diameter of the base lens corresponds to (i.e., is equal to or the same as) the diameter of the battery compartment assembly 40 by dividing the thermal imaging lens into a lower-magnification base lens and a magnification-increasing mirror in the form of an accessory, and therefore, the thermal imaging assembly 30 and the battery compartment assembly 40 are symmetrically disposed on both sides of the housing 10 in the width direction, the visible light assembly 20 is disposed between the thermal imaging assembly 30 and the battery compartment assembly 40, the thermal imaging assembly 30 and the battery compartment assembly 40 correspond in diameter, and the diameter of the visible light assembly 20 is smaller than the diameter of the thermal imaging assembly 30. By doing so, as shown in FIG. 2, the housing 10 may have a consistent height, which is determined by the diameter of the thermal imaging assembly 30 and the battery compartment assembly 40. Thus, by breaking down the thermal imaging lens into a lower power base lens and a magnification-enhancing mirror as an accessory, the thermal imaging assembly 30 is no longer the primary (sole) factor affecting the overall volume of the thermal imager.

Preferably, as shown in fig. 2 and 5, the thermal imaging camera of the present embodiment further includes:

and the laser ranging assembly 70 is arranged between the thermal imaging assembly 30 and the battery cabin assembly 40, and the laser ranging assembly 70 is positioned below the visible light assembly 20.

Specifically, as shown in fig. 1 to 4, the housing 10 includes: a middle case 12 opened at both front and rear ends, a front case 11 covering the front end of the middle case 12, and a rear case 13 covering the rear end of the middle case 12. The rear end as referred to herein is the end facing the user and is oriented in the same direction as the thermal imaging camera is in use.

The battery compartment assembly 40 includes a battery compartment (not shown) mounted in the middle case 12 and a battery cover 41 detachably sealing the battery compartment, the visible light assembly 20 includes a visible light lens 21, the thermal imaging lens 31 and the battery cover 41 are symmetrically disposed at both sides of the front case 11 in the width direction, the visible light lens 21 and the laser ranging assembly 70 are disposed at the center of the front case 11 and between the thermal imaging assembly 30 and the battery compartment assembly 40, and the eyepiece 60 is disposed on the rear case 13. As shown in FIG. 2, the components of the embodiment are stacked compactly, which is beneficial to reducing the size of the whole machine and the weight of the equipment.

Preferably, the battery cover 41 is threadedly connected to the battery compartment. The battery cover 41 is circular, and the rotating connection mode can greatly reduce the occupied volume of the battery bin assembly compared with a flip-type battery bin. The battery cover 41 may be provided with knurling lines at its periphery for easy operation, and the battery cover 41 may be provided with a circular boss at its top for easy installation of a hanging rope, thereby effectively preventing the battery cover from being lost when the battery is replaced.

As shown in fig. 3 and 5, the thermal imaging camera of the present embodiment may further include a silicone rubber cladding 80 covering the outer surface of the middle casing 12, and a plurality of keys 90 disposed on the upper surface of the middle casing 12, each key 90 including a key assembly and a key cap 91 located at the top end of the key assembly, the key cap 91 being integrally formed on the silicone rubber cladding 80. The keys 90 are used for the user to operate the thermal imager, and may include, for example, a power switch, a menu unit, a mode switching key, a distance measuring key, a photographing/recording key, an electric focus + key, and an electric focus-key.

In this embodiment, the button 90 has adopted the silica gel button of flattening formula, this part of button clamp plate has promptly been got rid of, but the mode that has adopted the key cap 91 that forms integratedly on silica gel covering 80 and has combined with key component, then the key cap 91 both has the effect of key cap itself, can play sealed waterproof function again, can cancel the sealing member that sets up alone like this, thereby button clamp plate has been cancelled, the button development cost has not only been reduced effectively, guarantee the reliability of button, and can avoid the bad feeling that the metal button arouses, thereby promote man-machine experience.

As shown in fig. 3, the silicone rubber cladding 80 further includes a holding portion 81, the positions of the holding portion 81 correspond to the left and right sides of the middle shell 12, that is, the positions correspond to the operation positions of human hands, and the holding portion 81 corresponds to the positions of fingers of an operator, so that the key cap 91 is disposed at the end of the holding portion 81 to effectively guide the user operation and enhance the experience and the operation precision. The holding portion 81 has a groove structure, and the shape corresponds to the position corresponding to the fingers.

Preferably, an inflation inlet is reserved at the bottom of the middle shell 12 and is sealed according to an inflation inlet screw, so that the waterproof effect can be rapidly detected conveniently during production. As shown in fig. 3, the bottom of the center housing 12 has a mounting interface 66 for mounting and securing a thermal imaging camera. An electronic compass component can be further installed in the middle shell, and the azimuth information of the observation point can be conveniently detected.

As shown in fig. 5, the display module 61 is further included, and the digital signal is output to the eyepiece 60 through the display module 61. Wherein the eyepiece 60 may further include an adjustment module and an eye cup. Display module 61 mainly turns into image output with digital signal, and adjusting module realizes adjusting the eyepiece moderate degree to make things convenient for different eyesight crowds to observe the image, eye-shade mainly used shelters from the light in the environment, reduces the interference to observing, can also prevent to show that image light reveals, exposes the observation personnel position.

As shown in fig. 4 and 5, the portable electronic device further comprises a proximity switch assembly, the proximity switch assembly comprises a sensor 62 arranged on the rear housing 13, the proximity switch assembly is connected with the circuit board 50, the controller turns on or off the power supply of the display module 61 according to a detection signal of the sensor 62, and the display module 61 is turned off in time, so that the cruising ability of the device can be improved.

As shown in fig. 4, the rear housing 13 has a platform 63 disposed between the two eyepieces 60, the platform 63 being vertically recessed toward the interior of the housing 10 to avoid the nasal bridge position of the user. The thermal imaging camera further includes an input/output interface 64, and the input/output interface 64 is provided on the stage 63. The input/output interface 64 enables data transfer and/or power transfer for thermal imager data transfer, system upgrades, and the like. The rear shell 13 is provided with a plurality of screw counter bores, so that the exposed area of the screws can be reduced while the screws are conveniently fixed, and the overall coordination and unification of the appearance are ensured.

As shown in fig. 3, the upper surface of the middle case 12 further includes an antenna case 65, the antenna case 65 is made of a non-metallic material, and an antenna 100 is disposed in the antenna case 65. The antenna 100 may include a GPS (Global Positioning System) antenna and a WiFi (Wireless Fidelity) antenna, and the antenna housing made of a non-metal material can avoid shielding of the antenna by metal to ensure the usability.

As shown in fig. 5, to improve the device modular installation and manufacturability, each component can be independently installed and connected to the Circuit board 50 through FPC (Flexible Printed Circuit) lines. The battery compartment assembly 40 supplies power to various components connected with the circuit board 50 through the circuit board 50, and may include a thermal imaging assembly 30, a visible light assembly 20, a laser ranging assembly 70, an antenna 100, a display module 61, an electronic compass, and the like. The battery compartment can be powered by a multi-section rechargeable 18650.

In order to ensure the waterproof performance of the equipment, sealing rings are arranged between the front shell 11 and the middle shell 12, between the middle shell 12 and the rear shell 13, between the lens and the front shell 12 and between the antenna cover and the middle shell 12, so that the waterproof sealing requirement is met.

According to the technical scheme, the thermal imager adopts a rotary battery bin structure, so that the volume of the whole thermal imager is effectively reduced, the waterproof sealing requirement is met, equipment on the market mostly adopts a flip cover form, the occupied space of a moving part is large, and the appearance of the whole thermal imager is thick; the large-area flattening rubber-coated keys are adopted, so that the key development cost can be reduced, the human-computer experience is improved, and products on the market mostly adopt a form of silica gel keys and key pressing plates, so that the assembly is complex and the appearance is influenced; the thermal imaging lens adopts a buckle type interface, so that the lens expansion is convenient to carry out and the volume of the thermal imaging lens can be reduced, and most of products on the market adopt a lens replacement mode to realize the lens expansion, so that the thermal imaging lens is inconvenient, and the camera body is heavy and inconvenient to operate; a plastic antenna cover is arranged above the machine body, and a GPS (global positioning system) antenna and a WIFI (wireless fidelity) antenna are arranged in the plastic antenna cover, so that the shielding of metal on the antenna can be avoided, and the service performance is ensured; the manual focusing ocular lens is adopted, so that users with different eyesight conditions can be met; the use of the eye shield can improve the concealment of night observation.

The whole machine shell comprises a front shell, a middle shell and a rear shell, preferably, the shell is made of magnesium alloy materials, the weight of the whole machine shell is greatly reduced compared with most aluminum alloy equipment on the market, and the portability is improved. The front shell is provided with a thermal imaging assembly, a visible light assembly, a battery assembly and a laser ranging assembly. Thermal imaging subassembly and battery pack are located the shell left and right sides before respectively, and visible light subassembly and laser range finding subassembly are located shell central authorities before, and wherein the visible light subassembly is located laser range finding subassembly top. The whole stacking is compact, the size of the whole machine is reduced, and the weight of the equipment is reduced. The left side and the right side of the middle shell are provided with hanging holes, so that accessory parts such as wrist straps, lens covers, braces and the like can be conveniently installed. The bayonet structure reserved in the thermal imaging lens is convenient for lens expansion; the round battery cover can effectively reduce the size, the sealing ring is arranged between the battery cover and the front shell to achieve the waterproof effect, the knurling structures are arranged on the periphery of the battery cover to facilitate hand screwing, the round boss is arranged on the top of the battery cover to facilitate rope hanging installation, and the battery cover can be effectively prevented from being lost when the battery is replaced.

In this document, "a" does not mean that the number of the relevant portions of the present invention is limited to "only one", and "a" does not mean that the number of the relevant portions of the present invention "more than one" is excluded.

Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of the features without departing from the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. A thermal imaging camera is characterized by comprising a shell (10), a visible light assembly (20), a thermal imaging assembly (30), a battery compartment assembly (40), a circuit board (50) and a control module which are arranged in the shell (10), and two eyepieces (60) which are arranged at the rear end of the shell (10);

video signals collected by the thermal imaging assembly (30) and/or the visible light assembly (20) are input to the control module, converted into digital signals through the control module and output to the eyepiece (60), and the battery compartment assembly (40) provides power for the visible light assembly (20), the thermal imaging assembly (30) and the control module through the circuit board (50);

the thermal imaging assembly (30) comprises a thermal imaging lens (31) and a multiplying lens, the thermal imaging lens (31) is arranged at the front end of the shell (10), and the multiplying lens is detachably connected to the thermal imaging lens (31) through a lens bayonet (32) on the thermal imaging lens (31);

the thermal imaging assembly (30) and the battery compartment assembly (40) are symmetrically arranged on two sides of the shell (10) in the width direction, the visible light assembly (20) is arranged between the thermal imaging assembly (30) and the battery compartment assembly (40), the diameters of the thermal imaging assembly (30) and the battery compartment assembly (40) correspond to each other, and the diameter of the visible light assembly (20) is smaller than that of the thermal imaging assembly (30).

2. A thermal imaging camera according to claim 1, further comprising:

a laser ranging assembly (70), the laser ranging assembly (70) disposed between the thermal imaging assembly (30) and the battery compartment assembly (40) and below the visible light assembly (20).

3. A thermal imaging camera according to claim 2, characterized in that said housing (10) comprises: a middle shell (12) with openings at the front end and the rear end, a front shell (11) covering the front end of the middle shell (12), and a rear shell (13) covering the rear end of the middle shell (12),

the battery compartment assembly (40) comprises a battery compartment arranged in the middle shell (12) and a battery cover (41) which can detachably seal the battery compartment, the visible light assembly (20) comprises a visible light lens (21),

thermal imaging lens (31) and battery cover (41) set up symmetrically preceding shell (11) the width direction both sides on, visible light camera lens (21) and laser range finding subassembly (70) set up preceding shell (11) central authorities, and be located thermal imaging subassembly (30) with between battery compartment subassembly (40), eyepiece (60) set up on backshell (13).

4. A thermal imaging camera according to claim 3, characterised in that said battery cover (41) is screwed to said battery compartment.

5. The thermal imaging camera according to claim 3, further comprising a silicone coating (80) wrapping an outer surface of the middle case (12), and a plurality of keys (90) provided on an upper surface of the middle case (12),

each key (90) comprises a key assembly and a key cap (91) positioned at the top end of the key assembly, wherein the key caps (91) are integrally formed on the silica gel cladding (80).

6. The thermal imaging camera according to claim 5, wherein the silicone cladding (80) further comprises a holding portion (81), the holding portion (81) is located corresponding to the left and right sides of the middle shell (12), and the key cap (91) is disposed at the end of the holding portion (81).

7. A thermal imager as claimed in claim 3, further comprising a display module (61), said digital signal being output to said eyepiece (60) via said display module (61).

8. A thermal imaging camera according to claim 7, further comprising a proximity switch assembly comprising a sensor (62) provided on the rear housing (13),

the proximity switch assembly is connected with the circuit board (50), and the controller turns on or off the power supply of the display module (61) according to a detection signal of the sensor (62).

9. A thermal imaging camera according to claim 3, characterized in that the rear shell (13) has a sinking platform (63) arranged between two eyepieces (60), the sinking platform (63) being recessed towards the inside of the housing (10) in a vertical direction,

the thermal imaging camera further comprises an input/output interface (64), wherein the input/output interface (64) is arranged on the sinking platform (63).

10. A thermal imaging camera according to claim 3, characterized in that the upper surface of the middle shell (12) further comprises an antenna shell (65), the antenna shell (65) is made of non-metallic material, and an antenna (100) is arranged in the antenna shell (65).