CN112859492A - Optical sensor assembly - Google Patents
Optical sensor assembly Download PDFInfo
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- CN112859492A CN112859492A CN202011628927.1A CN202011628927A CN112859492A CN 112859492 A CN112859492 A CN 112859492A CN 202011628927 A CN202011628927 A CN 202011628927A CN 112859492 A CN112859492 A CN 112859492A
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- shell
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- cavity
- sealing
- heat dissipation
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses an optical sensor assembly, which comprises a shell, wherein a lens sealing device is arranged at the upper end of the front surface of the shell, an infrared receiver is embedded into the lower end of the front surface of the shell, an infrared exciter is arranged at a position, close to the lens sealing device, inside the shell, a PCB is arranged at the middle position, the upper surface of the PCB is provided with a measurement control circuit, the lower end of the PCB is fixedly provided with a heat dissipation device, and a cable is arranged at a position, close to the heat dissipation device, of the lower end of the PCB. According to the invention, the lens sealing device is arranged, the connecting flange is used for fixing the lens and the shell, the sealing shell is arranged at the connecting position of the lens and the shell, the liquid silica gel is injected through the silica gel injection port, the silica gel layer is formed in the sealing shell after the liquid silica gel is solidified to seal the connecting position of the lens and the shell, and the good sealing effect is realized by matching with the sealing ring.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to an optical sensor assembly.
Background
The optical sensor is a sensor which performs measurement based on an optical principle, has many advantages such as non-contact and non-destructive measurement, almost no interference, high-speed transmission, telemetering, remote control and the like, mainly comprises optical sensors and instruments such as general optical metering instruments, laser interference type, grating, encoder and optical fiber type and the like, and is mainly used for detecting whether a target object appears or not in design or performing motion detection of various industries, automobiles, electronic products and retail automation.
In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: 1. in the prior art, the connection position of a lens of an optical sensor and a shell is poor in tightness when the lens is installed, and when the optical sensor is used in a humid environment, external moisture easily enters the sensor through a gap, so that internal electronic components are corroded, and the normal use of the optical sensor is influenced; 2. in the prior art, the optical sensor has low power and generates low heat, and meanwhile, a special heat dissipation structure cannot be arranged for protecting the sealing performance of the optical sensor, but when the optical sensor is used in hot weather or in high environment temperature, the heat accumulation is generated in the optical sensor due to sealing, so that the temperature is increased, the use performance of the optical sensor is influenced, and even components are damaged.
To this end, an optical sensor assembly is proposed.
Disclosure of Invention
The invention aims to provide an optical sensor assembly, which can fix a lens and a shell by a connecting flange through arranging a lens sealing device, can realize good sealing effect by arranging a sealing shell at the connecting position of the lens and the shell and injecting liquid silica gel through a silica gel injection hole, can form a silica gel layer in the sealing shell to seal the connecting position of the lens and the shell after the liquid silica gel is solidified, and is matched with a sealing ring to realize good sealing effect, can effectively prevent external moisture from entering the inside of an optical sensor, avoid the problem that the internal electronic components are corroded and influence the normal use of the optical sensor, can radiate heat to the outside by arranging a heat radiating device between a PCB (printed circuit board) and the shell, and realize better heat radiating effect by utilizing heat conduction glue and a heat conduction guide pillar to transfer the heat to a heat radiating plate which is embedded in the lower surface of the shell, the problem that when the optical sensor is used in hot weather or in high environment temperature, the temperature is increased due to heat accumulation generated in the optical sensor in a sealing mode, the use performance of the optical sensor is affected, and even the components are damaged is solved, and the problem in the background technology is solved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an optical sensor subassembly, includes the casing, the front surface upper end of casing is provided with camera lens sealing device, the embedding of the front surface lower extreme of casing is provided with infrared receiver, the inside position that is close to camera lens sealing device of casing is provided with infrared exciter, casing internal intermediate position is provided with the PCB board, PCB board upper surface is provided with measurement control circuit, PCB board lower extreme fixed mounting has heat abstractor, heat abstractor lower extreme and casing embedding installation, the position that PCB board lower extreme is close to heat abstractor is provided with the cable.
The invention can fix the lens and the shell by arranging the lens sealing device and utilizing the connecting flange, realize good sealing effect by arranging the sealing shell at the connecting position of the lens and the shell and injecting liquid silica gel through the silica gel injection port, and forming the silica gel layer in the sealing shell to seal the connecting position of the lens and the shell after the liquid silica gel is solidified, and by matching with the sealing ring, can effectively prevent external moisture from entering the inside of the optical sensor, thereby avoiding the problem of corrosion to internal electronic components and influencing the normal use of the optical sensor. The problem that the temperature is increased due to the accumulation of heat generated by sealing in the optical sensor, the use performance of the optical sensor is influenced, and even components are damaged is solved.
The camera lens sealing device comprises a camera lens embedded into a shell, a connecting flange is arranged on the side surface of the camera lens, the camera lens is fixedly connected with the shell through the connecting flange, a sealing shell is fixedly arranged on the inner surface of the shell, close to the camera lens, in the position, a silica gel injection port is formed in the top end of the sealing shell, and a silica gel layer is filled in the sealing shell.
Utilize flange to fix camera lens and casing, through setting up sealed shell at camera lens and casing hookup location to pour into liquid silica gel through the silica gel filling opening, can seal camera lens and casing hookup location at the inside silica gel layer that forms of sealed shell after waiting that liquid silica gel solidifies, cooperate the sealing washer, realized good sealed effect.
The heat dissipation device comprises a heat conduction cavity fixedly arranged in the middle of the lower surface of the PCB, heat conduction glue is filled in the heat conduction cavity, the lower surface of the PCB penetrates through the heat conduction cavity and is provided with a plurality of heat conduction guide pillars, and a heat dissipation plate is fixedly arranged at the bottom end of the heat conduction cavity.
Through adopting above-mentioned technical scheme, utilize heat-conduction glue, heat conduction guide pillar with heat transfer for the heating panel, heating panel embedding casing lower surface sets up, can lead the external world with heat dissipation, has realized better radiating effect.
The bottom of the heat dissipation device is provided with a groove, the groove penetrates through a heat dissipation plate, an expansion mechanism is arranged in the groove, the expansion mechanism comprises an expansion body and a metal mesh frame wrapped outside the expansion body, a cavity is formed in the inner side of the expansion body, thermal expansion liquid is filled in the cavity, a cylindrical cavity is formed in the axis of the inner side of a heat transfer guide pillar, a backflow cavity is formed in the outer side of the cylindrical cavity, the upper end and the lower end of the backflow cavity are respectively communicated with the upper end and the lower end of the cylindrical cavity, a partition plate is arranged in the middle of the inner side of the cylindrical cavity, a piston is arranged above the partition plate and is in sliding connection with the inner wall of the cylindrical cavity, a liquid inlet cavity is formed between the partition plate and the piston and is communicated;
the inner part of the silicone rubber layer is provided with a bowl-mouth-shaped expansion ring, the cambered surface of the expansion ring faces the lens, the expansion ring is communicated with the conduit, and the cavity is communicated with the conduit.
Preferably, a sealing ring is arranged at the embedded connection position of the lens and the shell, and the sealing ring is a rubber component.
Through adopting above-mentioned technical scheme, the sealing washer can cooperate the silica rubber layer to realize double-deck sealed, has guaranteed the sealing performance of camera lens and casing.
Preferably, the heat dissipation plate is a metal member, and the heat dissipation plate is inserted into the bottom of the housing.
Through adopting above-mentioned technical scheme, the heating panel is a metal material's component, just the heating panel runs through embedding casing bottom and sets up, can disperse the heat of conduction to the outside, improves the heat dispersion of device.
Preferably, the position of the upper end of the PCB, which is close to the measurement control circuit, is electrically connected with a work indicator lamp through a wire.
Through adopting above-mentioned technical scheme, the operating condition of light sensor can be observed by the staff of being convenient for to the work pilot lamp, the operation of being convenient for.
Preferably, the upper end of the measurement control circuit is electrically connected with a sensitivity adjustment potentiometer through a lead, and the sensitivity adjustment potentiometer penetrates through the shell and is provided with a sensitivity adjustment button.
Through adopting above-mentioned technical scheme, the upper end of measuring control circuit has sensitivity adjustment potentiometer through wire electric connection, and sensitivity adjustment potentiometer cooperation sensitivity adjustment button can adjust the sensitivity of light sensor.
Compared with the prior art, the invention has the beneficial effects that:
1. the expansion mechanism can extrude thermal expansion liquid into the expansion ring when being heated, contracted when being cooled and immersed in deep water, so that the expansion ring is further expanded to expand the silicon rubber layer, support the lens and ensure the sealing effect of the silicon rubber layer on the lens;
2. when the expansion mechanism is heated to expand and extrude the thermal expansion liquid, the thermal expansion liquid is extruded into the liquid inlet cavity of the heat transfer guide pillar, the piston moves upwards to extrude the heat transfer oil to move downwards, so that the heat transfer efficiency of the heat transfer guide pillar is accelerated, the heat dissipation efficiency of the heat dissipation device is further improved, and particularly under the condition of repeated and rapid heat generation caused by intermittent work of the optical sensor, the expansion body can be continuously heated to expand and recover, so that the piston continuously moves up and down in the cylindrical cavity, and the heat dissipation efficiency of the heat dissipation device is accelerated;
3. according to the invention, the lens sealing device is arranged, the lens and the shell are fixed by the connecting flange, the sealing shell is arranged at the connecting position of the lens and the shell, the liquid silica gel is injected through the silica gel injection port, the silica gel layer is formed in the sealing shell after the liquid silica gel is solidified to seal the connecting position of the lens and the shell, and the sealing ring is matched, so that a good sealing effect is realized, external moisture can be effectively prevented from entering the optical sensor, and the problems that the corrosion is caused to internal electronic components and the normal use of the optical sensor is influenced are avoided.
4. According to the invention, the heat dissipation device is arranged between the PCB and the shell, heat is transferred to the heat dissipation plate by utilizing the heat conduction glue and the heat conduction guide pillar, the heat dissipation plate is embedded in the lower surface of the shell, the heat can be dissipated and conducted to the outside, a good heat dissipation effect is realized, and the problems that when the LED light source is used under the condition of hot weather or high ambient temperature, the temperature is increased due to heat accumulation generated in the optical sensor due to sealing, the use performance of the optical sensor is influenced, and even the components are damaged are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic structural diagram of a lens sealing device according to the present invention;
FIG. 3 is a schematic structural diagram of a heat dissipation device according to the present invention;
FIG. 4 is a schematic view of the overall structure of the present invention;
FIG. 5 is a schematic sectional view of the inflatable body of the present invention;
FIG. 6 is a schematic cross-sectional view of the heat transfer pillars of the present invention.
Description of reference numerals:
in the figure: 1. a housing; 2. an infrared receiver; 3. a lens sealing device; 31. a lens; 32. a connecting flange; 33. a seal ring; 34. a silica gel injection port; 35. a silicone rubber layer; 36. sealing the shell; 4. a sensitivity adjustment button; 5. an infrared exciter; 6. a sensitivity adjustment potentiometer; 7. a work indicator light; 8. a PCB board; 9. a heat sink; 91. a heat conducting cavity; 92. heat conduction glue; 93. a heat transfer guide post; 94. a heat dissipation plate; 10. a measurement control circuit; 11. a cable; 12. an expansion body; 13. a cavity; 14. a metal mesh frame; 15. an expansion ring; 16. a conduit; 17. a cylindrical cavity; 18. a partition plate; 19. a piston; 20. a reflux cavity; 21. a liquid inlet cavity; 22. and (4) slotting.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution of an optical sensor assembly:
an optical sensor assembly, as shown in fig. 1, includes a housing 1, a lens sealing device 3 is disposed on the upper end of the front surface of the housing 1, an infrared receiver 2 is disposed on the lower end of the front surface of the housing 1 in an embedded manner, wherein the infrared receiver 2 may be selected from the following models: 1GD-868M type, the inside of casing 1 near the position of lens sealing device 3 is provided with infrared exciter 5, wherein, the optional model of infrared exciter 5 is: GL04 type, the inside intermediate position of casing 1 is provided with PCB board 8, PCB board 8 upper surface is provided with measurement control circuit 10, 8 lower extreme fixed mounting of PCB board has heat abstractor 9, heat abstractor 9 lower extreme and casing 1 embedding installation, the position that 8 lower extremes of PCB board are close to heat abstractor 9 is provided with cable 11.
By adopting the technical scheme, the lens sealing device 3 is arranged, the lens 31 and the shell 1 are fixed by using the connecting flange 32, the sealing shell 36 is arranged at the connecting position of the lens 31 and the shell 1, the liquid silica gel is injected through the silica gel injection hole 34, the silica gel layer 35 is formed in the sealing shell 36 after the liquid silica gel is solidified to seal the connecting position of the lens 31 and the shell 1, and the sealing ring 33 is matched to realize good sealing effect, so that the external moisture can be effectively prevented from entering the inside of the optical sensor, the problems of corrosion to internal electronic components and influence on the normal use of the optical sensor are avoided, the heat radiating device 9 is arranged between the PCB 8 and the shell 1, the heat is transmitted to the heat radiating plate 94 by using the heat conduction glue 92 and the heat conduction guide post 93, the heat radiating plate 94 is embedded in the lower surface of the shell 1, and can radiate the heat, the better radiating effect is realized, and the problems that the temperature is increased and the use performance of the optical sensor is influenced or even the components are damaged due to the fact that heat accumulation is generated in the optical sensor due to sealing when the optical sensor is used under the condition that the weather is hot or the ambient temperature is high are avoided.
Specifically, as shown in fig. 2, the lens sealing device 3 includes a lens 31 embedded in the housing 1, a connecting flange 32 is disposed on a side surface of the lens 31, the lens 31 is fixedly connected to the housing 1 through the connecting flange 32, a sealing shell 36 is fixedly disposed on an inner surface of the housing 1 near the lens 31, a silicone injection port 34 is disposed at a top end of the sealing shell 36, and a silicone rubber layer 35 is filled in the sealing shell 36.
Through adopting above-mentioned technical scheme, utilize flange 32 to fix lens 31 and casing 1, through setting up sealed shell 36 at lens 31 and casing 1 hookup location to inject liquid silica gel through silica gel filling opening 34, can seal lens 31 and casing 1 hookup location at the inside silicone rubber layer 35 that forms of sealed shell 36 after liquid silica gel solidifies, cooperation sealing washer 33 has realized good sealed effect.
Specifically, as shown in fig. 2, a sealing ring 33 is disposed at a position where the lens 31 is embedded in the housing 1, and the sealing ring 33 is a rubber member.
By adopting the technical scheme, the sealing ring 33 can be matched with the silicone rubber layer 35 to realize double-layer sealing, so that the sealing performance of the lens 31 and the shell 1 is ensured.
Specifically, as shown in fig. 3, the heat dissipation device 9 includes a heat conduction cavity 91 fixedly disposed at a middle position of a lower surface of the PCB 8, the heat conduction cavity 91 is filled with a heat conduction adhesive 92, the lower surface of the PCB 8 penetrates through the heat conduction cavity 91 and is provided with a plurality of heat conduction pillars 93, and a heat dissipation plate 94 is fixedly mounted at a bottom end of the heat conduction cavity 91.
Through adopting above-mentioned technical scheme, utilize heat-conduction glue 92, heat conduction guide pillar 93 to give heating panel 94 with heat transfer, heating panel 94 embedding casing 1 lower surface sets up, can lead the external world with the heat dissipation, has realized better radiating effect.
Specifically, as shown in fig. 3, the heat dissipation plate 94 is made of a metal material, and the heat dissipation plate 94 is inserted into the bottom of the housing 1.
By adopting the above technical scheme, the heat dissipation plate 94 is a member made of metal material, and the heat dissipation plate 94 is arranged by penetrating the bottom of the embedded casing 1, so that the conducted heat can be dissipated to the outside, and the heat dissipation performance of the device is improved.
As shown in fig. 2, 3, 5 and 6, the bottom of the heat sink 9 is provided with a slot 22, the slot 22 penetrates through the heat dissipation plate 94, an expansion mechanism is arranged in the slot 22, the expansion mechanism comprises an expansion body 12 and a metal net frame 14 wrapped outside the expansion body 12, a cavity 13 is arranged on the inner side of the expansion body 12, the cavity 13 is filled with thermal expansion liquid, the inner axis of the heat transfer guide pillar 93 is provided with a cylindrical cavity 17, the outer side of the cylindrical cavity 17 is provided with a return cavity 20, the upper end and the lower end of the reflux cavity 20 are respectively communicated with the upper end and the lower end of the cylindrical cavity 17, the middle part of the inner side of the cylindrical cavity 17 is provided with a clapboard 18, a piston 19 is arranged above the partition plate 18, the piston 19 is connected with the inner wall of the cylindrical cavity 17 in a sliding way, a liquid inlet cavity 21 is formed between the partition plate 18 and the piston 19, the liquid inlet cavity 21 is communicated with the cavity 13, and heat conduction oil is stored at the upper part of the piston 19 in the cylindrical cavity 17; it should be noted that the pipeline connecting the expansion body 12 and the liquid inlet chamber 21 is not labeled in the drawing, and the pipeline should penetrate into the heat sink 9 and be connected with the liquid inlet chamber 21.
The inside of the silicon rubber layer 35 is provided with a bowl-mouth-shaped expansion ring 15, the arc surface of the expansion ring 15 faces the lens 31, the expansion ring 15 is communicated with the conduit 16, and the cavity 13 is communicated with the conduit 16. It should be noted that the pipeline connected to the expansion body 12 is not labeled in the drawings, and the pipeline connected to the expansion body 12 should pass through the expansion body 12 to communicate with the cavity 13 and can communicate with the conduit 16.
Because the metal net frame 14 is wrapped outside the expansion mechanism, the expansion mechanism cannot expand and deform outwards, so that the expansion mechanism can extrude thermal expansion liquid inwards when being heated, contracted when being cooled and immersed in deep water, the thermal expansion liquid is extruded into the expansion ring 15, the expansion ring 15 is further expanded to expand the silicon rubber layer 35, the lens 31 is supported, and the sealing effect of the silicon rubber layer 35 on the lens 31 is ensured; and when being heated, the thermal expansion liquid expands to extrude the thermal expansion liquid into the expansion ring 15, so that the supporting effect on the lens 31 is further improved, and the sealing performance of the silicone rubber layer 35 is ensured.
When the expansion mechanism is heated to expand and extrude the thermal expansion liquid, the thermal expansion liquid is extruded into the liquid inlet cavity 21 of the heat transfer guide pillar 93, so that the piston 19 moves upwards to extrude the heat transfer oil to move downwards, thereby accelerating the heat transfer efficiency of the heat transfer guide pillar 93, further improving the heat dissipation efficiency of the heat dissipation device 9, and particularly aiming at the situation of repeated and rapid heat generation caused by repeated starting work of the optical sensor during intermittent measurement of the optical sensor, the expansion body 12 can be continuously expanded and recovered by heating, so that the piston 19 continuously moves up and down in the cylindrical cavity 17, and the heat dissipation efficiency of the heat dissipation device 9 is accelerated; and when being heated, the thermal expansion liquid expands to extrude the thermal expansion liquid into the liquid inlet cavity 21, so that the driving effect on the piston 19 is further improved, and the piston 19 can extrude the heat conduction oil to ensure that the heat conduction oil moves downwards.
Specifically, as shown in fig. 1, the position of the upper end of the PCB board 8 near the measurement control circuit 10 is electrically connected to a work indicator light 7 through a wire.
Through adopting above-mentioned technical scheme, the operating condition of light sensor, the operation of being convenient for is observed to the staff that work pilot lamp 7 can be convenient for.
Specifically, as shown in fig. 1, the upper end of the measurement control circuit 10 is electrically connected to a sensitivity adjustment potentiometer 6 through a wire, wherein the selectable types of the sensitivity adjustment potentiometer 6 are: 3590S-2-101 model, the sensitivity adjustment potentiometer 6 penetrates the shell 1 and is provided with a sensitivity adjustment button 4.
By adopting the technical scheme, the upper end of the measurement control circuit 10 is electrically connected with the sensitivity adjusting potentiometer 6 through a lead, and the sensitivity adjusting potentiometer 6 is matched with the sensitivity adjusting button 4 to adjust the sensitivity of the optical sensor.
The working principle is as follows: the invention realizes good sealing effect by arranging the lens sealing device 3, fixing the lens 31 and the shell 1 by using the connecting flange 32, arranging the sealing shell 36 at the connecting position of the lens 31 and the shell 1, injecting liquid silica gel through the silica gel injection port 34, forming the silica gel layer 35 in the sealing shell 36 to seal the connecting position of the lens 31 and the shell 1 after the liquid silica gel is solidified, and matching with the sealing ring 33, thereby effectively preventing external moisture from entering the inside of the optical sensor, avoiding the problem that the internal electronic components are corroded to influence the normal use of the optical sensor, arranging the heat dissipation device 9 between the PCB 8 and the shell 1, transferring heat to the heat dissipation plate 94 by using the heat conduction glue 92 and the heat conduction guide post 93, embedding the heat dissipation plate 94 into the lower surface of the shell 1, and conducting the heat to the outside, thereby realizing better heat dissipation effect, the problem that when the optical sensor is used in hot weather or in high environment temperature, the temperature is increased due to heat accumulation generated in the optical sensor in a sealing mode, the use performance of the optical sensor is affected, and even damage to components is caused is solved.
The using method comprises the following steps: when the invention is used, the connecting position of the lens 31 and the shell 1 is connected and sealed firstly, the lens 31 and the shell 1 are fixed by the connecting flange 32, the sealing shell 36 is arranged at the connecting position of the lens 31 and the shell 1, liquid silica gel is injected through the silica gel injection port 34, a silica gel layer 35 is formed in the sealing shell 36 to seal the connecting position of the lens 31 and the shell 1 after the liquid silica gel is solidified, the sealing of the connecting position is realized by matching with the sealing ring 33, when the optical sensor works, an operator inputs a control signal through the cable 11, the measuring control circuit 10 controls the infrared exciter 5 to emit laser, the laser is received by the infrared receiver 2 after being emitted by an object, the singlechip arranged in the PCB 8 calculates the movement speed and other parameters of the object according to the time difference and feeds back the information to a user through the cable 11, the upper end of the measuring control circuit 10 is electrically connected with the sensitivity adjusting potentiometer 6 through a lead, sensitivity adjustment potentiometer 6 cooperation sensitivity adjustment button 4 can adjust the sensitivity of light sensor, and when light sensor used under the higher circumstances of hot or ambient temperature of weather, through setting up heat abstractor 9, utilized heat-conduction glue 92, heat-conduction guide pillar 93 to give heating panel 94 with heat transfer, heating panel 94 embedding casing 1 lower surface sets up, can lead the external world with heat dissipation, has realized better radiating effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An optical sensor assembly comprising a housing (1), characterized in that: the infrared camera is characterized in that a lens sealing device (3) is arranged at the upper end of the front surface of the shell (1), an infrared receiver (2) is embedded into the lower end of the front surface of the shell (1), an infrared exciter (5) is arranged at a position, close to the lens sealing device (3), in the shell (1), a PCB (8) is arranged at a middle position in the shell (1), a measurement control circuit (10) is arranged on the upper surface of the PCB (8), a heat dissipation device (9) is fixedly installed at the lower end of the PCB (8), the lower end of the heat dissipation device (9) is embedded into the shell (1), and a cable (11) is arranged at a position, close to the heat dissipation device (9), of the lower end of the PCB (8);
the lens sealing device (3) comprises a lens (31) embedded in a shell (1) for installation, a connecting flange (32) is arranged on the side surface of the lens (31), the lens (31) is fixedly connected with the shell (1) through the connecting flange (32), a sealing shell (36) is fixedly installed on the inner surface of the shell (1) close to the position of the lens (31), a silica gel injection port (34) is formed in the top end of the sealing shell (36), and a silica gel layer (35) is filled in the sealing shell (36);
the heat dissipation device (9) comprises a heat conduction cavity (91) fixedly arranged in the middle of the lower surface of the PCB (8), heat conduction glue (92) is filled in the heat conduction cavity (91), the lower surface of the PCB (8) penetrates through the heat conduction cavity (91) and is provided with a plurality of heat conduction guide pillars (93), and a heat dissipation plate (94) is fixedly arranged at the bottom end of the heat conduction cavity (91);
the bottom of the heat dissipation device (9) is provided with a slot (22), the slot (22) penetrates through a heat dissipation plate (94), an expansion mechanism is arranged in the slot (22), the expansion mechanism comprises an expansion body (12) and a metal mesh frame (14) wrapped on the outer side of the expansion body (12), a cavity (13) is arranged on the inner side of the expansion body (12), thermal expansion liquid is filled in the cavity (13), the axis of the inner side of the thermal conduction column (93) is provided with a cylindrical cavity (17), the outer side of the cylindrical cavity (17) is provided with a backflow cavity (20), the upper end and the lower end of the backflow cavity (20) are respectively communicated with the upper end and the lower end of the cylindrical cavity (17), a partition plate (18) is arranged in the middle of the inner side of the cylindrical cavity (17), a piston (19) is arranged above the partition plate (18), the piston (19) is in sliding connection with the inner wall of the cylindrical cavity (17), and a liquid inlet cavity (, the liquid inlet cavity (21) is communicated with the cavity (13), and heat conducting oil is stored at the upper part of a piston (19) in the cylindrical cavity (17);
the inner part of the silicone rubber layer (35) is provided with a bowl-mouth-shaped expansion ring (15), the arc surface of the expansion ring (15) faces the lens (31), the expansion ring (15) is communicated with the conduit (16), and the cavity (13) is communicated with the conduit (16).
2. An optical sensor assembly according to claim 1, wherein: a sealing ring (33) is arranged at the embedded connection position of the lens (31) and the shell (1), and the sealing ring (33) is a rubber component.
3. An optical sensor assembly according to claim 1, wherein: and one side of the expansion body is also communicated with a high-pressure liquid injection hole for adding liquid into the cavity.
4. An optical sensor assembly according to claim 1, wherein: the heat dissipation plate (94) is a component made of metal materials, and the heat dissipation plate (94) penetrates through the bottom of the embedded shell (1).
5. An optical sensor assembly according to claim 1, wherein: the position of the upper end of the PCB (8) close to the measurement control circuit (10) is electrically connected with a work indicator lamp (7) through a lead.
6. An optical sensor assembly according to claim 1, wherein: the upper end of the measurement control circuit (10) is electrically connected with a sensitivity adjusting potentiometer (6) through a lead, and the sensitivity adjusting potentiometer (6) penetrates through the shell (1) and is provided with a sensitivity adjusting button (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011628927.1A CN112859492A (en) | 2020-12-31 | 2020-12-31 | Optical sensor assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011628927.1A CN112859492A (en) | 2020-12-31 | 2020-12-31 | Optical sensor assembly |
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| CN112859492A true CN112859492A (en) | 2021-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019258A (en) * | 2022-01-07 | 2022-02-08 | 江苏浦丹光电技术有限公司 | Electric field sensor is with encapsulation apron that has high sensitivity and packaging hardware thereof |
| CN115236923A (en) * | 2022-08-04 | 2022-10-25 | 国网河南省电力公司商丘供电公司 | Outdoor intelligent monitoring equipment of scheduling equipment for power transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114019258A (en) * | 2022-01-07 | 2022-02-08 | 江苏浦丹光电技术有限公司 | Electric field sensor is with encapsulation apron that has high sensitivity and packaging hardware thereof |
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| CN115236923A (en) * | 2022-08-04 | 2022-10-25 | 国网河南省电力公司商丘供电公司 | Outdoor intelligent monitoring equipment of scheduling equipment for power transmission |
| CN115236923B (en) * | 2022-08-04 | 2023-08-22 | 国网河南省电力公司商丘供电公司 | Outdoor intelligent monitoring equipment of scheduling equipment for power transmission |
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Application publication date: 20210528 |