Coaxial separation type infrared movement and infrared detector

Abstract

The utility model discloses a coaxial separation type infrared movement and an infrared detector. The coaxial separation type infrared movement comprises a detector, a detector driving board, an image processing board and a user interface board. The detector driving plate and the detector are coaxially arranged and fixedly connected; the image processing board and the detector driving board are coaxially arranged, and the image processing board and the detector driving board are spaced and are connected through a flexible cable; the user interface board and the image processing board are coaxially arranged and fixedly connected. The detector, the detector driving board, the image processing board and the user interface board of the coaxial separated infrared movement and infrared detector are separated through the interval, so that the influence of heat generated by the image processing board and the user interface board on the detector and the detector driving board is avoided, and the temperature drift of the detector is reduced; therefore, the dynamic range and the image quality of the infrared movement are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of detectors, and particularly relates to a coaxial separation type infrared core module and an infrared detector. Background Art

[0002] An infrared sensor actively detects the thermal radiation of an external target and is a thermal sensitive device. The heat generated by the core module itself affects the imaging quality. In existing thermal imagers, the detector driving board, the image processing board, the user interface board, etc. usually adopt a connection method of board-to-board direct connection or FPC (flexible printed circuit board). The board-to-board direct connection and the FPC connection method have obvious disadvantages while having a compact structure. The board-to-board direct connection has no heat insulation design, and heat is directly conducted back and forth. The image processing board is the main heat source of the whole system and is connected to the driving board through a board-to-board connector. The space is relatively close, and heat is directly radiated. The connector pins are generally made of copper, with strong heat conduction ability. The heat of the processing board directly affects the infrared detector on the driving board through radiation and conduction, causing the detector to heat up, and then leading to obvious temperature drift of the detector, affecting the gray scale dynamic range and the non-uniformity of the picture of the detector. Moreover, the integrated structure of the board-to-board direct connection limits the application of some product forms. Further, for handheld devices, such as monocular telescopes, binocular telescopes, single-light and multi-light pods, etc., their internal space is compact, there are many equipment components to be installed, and the integrated core module is often too high in height, occupying installation space and not being flexible enough in space utilization. The FPC connection method avoids the disadvantages of the board-to-board connection to a certain extent, but it is not perfect enough. The FPC connection is easy to loosen and has poor earthquake resistance. During the use of an optoelectronic pod as a drone payload, the vibration is large. After long-term use, the easy loosening of the FPC connector leads to problems such as image screen distortion and communication failure. In addition, there are many signals to be transmitted between the driving board and the image processing board, and a relatively wide FPC line is required. The relatively wide line is not conducive to threading. The FPC line has no reference return layer and cannot perform impedance control, which is not conducive to the transmission of high-speed signals and is prone to signal integrity problems.

[0003] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the utility model and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a coaxial separation type infrared core module, which can reduce the influence of the heat generated by the core module on the detector.

[0005] To achieve the above object, a specific embodiment of the present utility model provides a coaxial separation type infrared core module, which includes: a detector, a detector driving board, an image processing board, and a user interface board. The detector driving board is coaxially arranged with and fixedly connected to the detector; the image processing board is coaxially arranged with the detector driving board, and there is a gap between the image processing board and the detector driving board and they are connected by a flexible cable; the user interface board is coaxially arranged with and fixedly connected to the image processing board.

[0006] In one or more embodiments of the present utility model, the image processing board and the user interface board are connected by a connecting member, and the image processing board and the user interface board are respectively arranged on both sides of the connecting member.

[0007] In one or more embodiments of the present utility model, the side edge of the connecting member extends along the circumferences of the image processing board and the user interface board, and the side edge of the connecting member abuts against the image processing board and the user interface board.

[0008] In one or more embodiments of the present utility model, both ends of the flexible cable are provided with fixing heads, and the fixing heads are configured to be fixed on the detector driving board and the image processing board.

[0009] In one or more embodiments of the present utility model, the fixing heads are detachably connected to the detector driving board and the image processing board.

[0010] In one or more embodiments of the present utility model, the flexible cable is wrapped with a shielding layer for blocking electromagnetic interference.

[0011] In one or more embodiments of the present utility model, the flexible cable is coaxially arranged with the detector driving board and the image processing board.

[0012] In one or more embodiments of the present utility model, a bearing platform is arranged between the detector and the detector driving board for connecting the detector and the detector driving board; the detector and the detector driving board are respectively arranged on both sides of the bearing platform.

[0013] In one or more embodiments of the present utility model, the side wall of the bearing platform extends along the circumference of the detector and encloses the detector.

[0014] Compared with the prior art, in the coaxial separation type infrared core of the present utility model, the detector, the detector driving board, the image processing board and the user interface board are separated by intervals, avoiding the influence of the heat generated by the image processing board and the user interface board on the heat-sensitive detector and the detector driving board, reducing the temperature drift of the detector, and thus improving the dynamic range and image quality of the infrared core. Moreover, the reliability, seismic resistance and utilization rate of the structural space of the coaxial separation type infrared core are improved, and it has stronger anti-interference ability.

[0015] Another specific embodiment of the present utility model provides an infrared detector, which includes a housing and a coaxial separation type infrared core. The interior of the housing has a receiving space; the coaxial separation type infrared core is disposed in the receiving space and abuts against the housing.

[0016] Compared with the prior art, the internal structure distribution of the infrared detector of the present utility model is more reasonable, the heat generated by the core will not affect the detector, reducing the temperature drift of the infrared detector, and thus improving the dynamic range and image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural diagram of a coaxial separation type infrared core in an embodiment of the present utility model;

[0019] Figure 2 It is a schematic diagram of an infrared detector in an embodiment of the present utility model;

[0020] Figure 3 It is an exploded view of an infrared detector in an embodiment of the present utility model.

[0021] MAIN REFERENCE NUMERAL DESCRIPTION:

[0022] 1 - Detector, 2 - Detector driving board, 3 - Image processing board, 4 - User interface board, 5 - Flexible cable, 51 - Fixed head, 6 - Connecting piece, 61 - Side, 7 - Bearing platform, 71 - Side wall, 8 - Housing, 9 - Interval, A - Coaxial separation type infrared core. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figure 1 shown, a coaxial separation type infrared core A in an embodiment of the present utility model includes: a detector 1, a detector drive board 2, an image processing board 3, and a user interface board 4. The detector drive board 2 is coaxially arranged with and fixedly connected to the detector 1. For example, the detector drive board 2 and the detector 1 can be fixedly connected through a board-to-board connector. The image processing board 3 is coaxially arranged with the detector drive board 2, and there is a gap 9 between the image processing board 3 and the detector drive board 2 and they are connected through a flexible cable 5; the user interface board 4 is coaxially arranged with and fixedly connected to the image processing board 3. For example, the user interface board 4 and the image processing board 3 can be fixedly connected through a board-to-board connector.

[0025] In the above embodiment, the user interface board 4 mainly places user interfaces, a primary power processing unit, and necessary signal protection circuits. The image processing board 3 places a core processing chip and a minimum system circuit around the processing unit including necessary power supplies, etc. The detector drive board 2 mainly places an analog processing circuit of the detector 1 and a multi-channel bias power supply.

[0026] During the operation of the infrared core, the user interface board 4 and the image processing board 3 are mainly digital circuits, thus becoming the main heat sources of the infrared core. In this embodiment, the user interface board 4 and the image processing board 3 are arranged together, and there is a gap 9 between the image processing board 3 and the detector drive board 2. The heat generated by the user interface board 4 and the image processing board 3 will not be transferred to the detector drive board 2 and the detector 1 due to the existence of the gap 9, thus effectively avoiding overheating of the detector 1.

[0027] In an embodiment, the image processing board 3 and the user interface board 4 are connected through a connector 6, and the image processing board 3 and the user interface board 4 are respectively arranged on both sides of the connector 6. The image processing board 3 and the user interface board 4 are tightly connected together through the connector 6, with a compact layout and reliable connection.

[0028] Further, in one embodiment, the connecting member 6 may have a rectangular frame structure. The side edges 61 of the connecting member 6 extend along the circumferences of the image processing board 3 and the user interface board 4, and the side edges 61 of the connecting member 6 are in contact with the image processing board 3 and the user interface board 4. The heat of the image processing board 3 and the user interface board 4 can be transferred to the outside through the connecting member 6, thus avoiding the influence of heat accumulation on the heat dissipation and heat insulation effects of the space 9.

[0029] In one embodiment, a bearing platform 7 is provided between the detector 1 and the detector driving board 2 for connecting the detector 1 and the detector driving board 2. The detector 1 and the detector driving board 2 are respectively arranged on both sides of the bearing platform 7. The detector driving board 2 is mainly an analog circuit and hardly generates heat, and its heat has almost negligible influence on the detector 1. Therefore, the detector 1 can be fixed on the detector driving board 2 by a bayonet pin or fixed to the detector driving board 2 by welding.

[0030] In one embodiment, the bearing platform 7 may also have a rectangular frame structure. For example, the side wall 71 of the bearing platform 7 extends along the circumference of the detector 1 and encloses the detector 1, so that the heat generated by the detector 1 itself can be transferred to the outside through the bearing platform 7.

[0031] In one embodiment, fixing heads 51 are provided at both ends of the flexible cable 5, and the fixing heads 51 are configured to be fixed on the detector driving board 2 and the image processing board 3. The fixing heads 51 are detachably connected to the detector driving board 2 and the image processing board 3. The fixing heads 51 at both ends of the flexible cable 5 can be connected to the detector driving board 2 and the image processing board 3 by pressing or a locking mechanism. With such a setting, the stable connection between the fixing heads 51 and the detector driving board 2 and the image processing board 3 is ensured, and there will be no loosening even under large vibrations.

[0032] The flexible cable 5 may also be wrapped with a shielding layer, which can effectively block various electromagnetic interferences, improve the signal quality, and extend the signal transmission distance. Moreover, the wire diameter of the flexible cable 5 is extremely thin, and it can be randomly inserted into the gaps in the cavity of the detector and bent arbitrarily. In one embodiment, the flexible cable 5 and the detector driving board 2 and the image processing board 3 can be coaxially arranged, so that the same set of circuit boards can adapt to multiple products, improving the versatility and saving the costs of design, production, and material preparation.

[0033] The use of the flexible cable 5 separates the detector 1, the detector drive board 2, the image processing board 3, and the user interface board 4 into a front-end part and a back-end part. The front-end part and the back-end part are separated by a gap 9, achieving thermal isolation between the back-end part with heat-generating processing units such as the image processing board 3 and the user interface board 4 and the front-end part of the heat-sensitive detector 1 and the detector drive board 2, reducing the temperature drift of the detector 1, thereby enhancing the dynamic range and image quality of the infrared core module. In addition, the flexible cable 5 improves the signal transmission quality and the ability to resist electromagnetic interference, enabling the signal to be transmitted farther.

[0034] In summary, in the coaxial separation type infrared core module A of the present utility model, the detector 1, the detector drive board 2, the image processing board 3, and the user interface board 4 are separated by a gap 9, avoiding the influence of the heat generated by the image processing board 3 and the user interface board 4 on the heat-sensitive detector 1 and the detector drive board 2, reducing the temperature drift of the detector 1, thereby enhancing the dynamic range and image quality of the infrared core module. Moreover, the reliability, seismic resistance, and utilization rate of the structural space of the coaxial separation type infrared core module A are improved, and it has a stronger anti-interference ability.

[0035] An infrared detector in another embodiment of the present utility model. As Figure 2 and 3 shown, the infrared detector includes a housing 8 and the above-mentioned coaxial separation type infrared core module A. The interior of the housing 8 has a receiving space; the coaxial separation type infrared core module A is disposed in the receiving space and abuts against the housing 8.

[0036] This infrared detector uses the coaxial separation type infrared core module A, and its internal structure is more reasonably distributed. The heat generated by the core module will not affect the detector 1 part, reducing the temperature drift of the infrared detector 1, thereby enhancing the dynamic range and image quality.

[0037] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0038] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coaxial separable infrared core unit, characterized in that, Comprising: A detector; A detector drive board, coaxially arranged with and fixedly connected to the detector; An image processing board, coaxially arranged with the detector drive board, and there is a gap between the image processing board and the detector drive board and they are connected by a flexible cable; And A user interface board, coaxially arranged with and fixedly connected to the image processing board.

2. The coaxial separation type infrared core unit according to claim 1, characterized in that The image processing board and the user interface board are connected by a connecting member, and the image processing board and the user interface board are respectively arranged on both sides of the connecting member.

3. The coaxial separation type infrared core unit according to claim 2, characterized in that, The side edge of the connecting member extends along the circumferences of the image processing board and the user interface board, and the side edge of the connecting member abuts against the image processing board and the user interface board.

4. The coaxial separation type infrared core unit according to claim 1, wherein Both ends of the flexible cable are provided with fixing heads, and the fixing heads are configured to be fixed on the detector drive board and the image processing board.

5. The coaxial separated infrared core unit according to claim 4, wherein The fixing heads are detachably connected to the detector drive board and the image processing board.

6. The coaxial separation type infrared core unit according to claim 1, wherein, The flexible cable is wrapped with a shielding layer for blocking electromagnetic interference.

7. The coaxial separation type infrared core unit according to claim 1, wherein The flexible cable is coaxially arranged with the detector drive board and the image processing board.

8. The coaxial separation type infrared core unit according to claim 1, wherein A bearing platform is arranged between the detector and the detector drive board for connecting the detector and the detector drive board; the detector and the detector drive board are respectively arranged on both sides of the bearing platform.

9. The coaxial separation type infrared core unit according to claim 8, characterized in that, The side wall of the bearing platform extends along the circumference of the detector and encloses the detector.

10. An infrared detector, characterized in that, Comprising: A housing having an accommodation space inside; And The coaxial separation type infrared core as described in any one of claims 1-9, arranged in the accommodation space and abutting against the housing.

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