Defogging device for surveying instrument lens of surveying and mapping engineering

Abstract

The utility model discloses a surveying and mapping engineering surveying instrument lens demisting device which comprises a surveying instrument body and a demisting mechanism, an air inlet connector and an air exhaust connector are arranged on the side face of an inner cavity of a lens of the surveying instrument body, an air blowing pipeline is fixedly arranged on the upper portion of the inner cavity of the lens of the surveying instrument body, and an air exhaust pipeline is fixedly arranged at the bottom of the inner cavity of the lens of the surveying instrument body. The demisting mechanism comprises a circulating fan, the air outlet end of the circulating fan is communicated with a heating assembly, the other end of the heating assembly is communicated with an air inlet connector through an air blowing hose, the air inlet end of the circulating fan is communicated with a dehumidification filtering assembly, and the other end of the dehumidification filtering assembly is communicated with an air exhaust connector through an air exhaust hose. The circulating fan, the heating assembly and the dehumidifying and filtering assembly in the demisting mechanism work cooperatively, mist in the lens can be removed rapidly, and compared with a traditional mode that the lens is detached to wipe the mist, the mode greatly shortens the demisting time, and continuity of surveying and mapping work can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of defogging devices for surveying instruments, and specifically refers to a defogging device for the lens of a surveying instrument in surveying engineering. Background Technique

[0002] Surveying instruments are indispensable and important tools in surveying engineering. It is widely used in many fields such as topographic surveying, engineering surveying, and building surveying, and can accurately measure various geometric parameters such as the position, distance, and angle of the target. The surveying instrument obtains the image information of the measurement object through its lens, and the optical performance of the lens is crucial for the accuracy of surveying data. In various complex surveying environments, the surveying instrument needs to maintain a good working state to ensure the smooth progress of the measurement work.

[0003] During the actual use process, fog is likely to form inside the lens of the surveying instrument. This is mainly because surveying work often faces different environmental conditions. For example, in an environment with high humidity, when the surveying instrument suddenly enters a high-temperature environment from a low-temperature environment, or vice versa, the air humidity inside the lens will change. Since the inside of the lens is a relatively enclosed space, the change in air temperature and humidity easily causes water vapor to condense on the inner wall of the lens to form fog. The fog inside the lens will seriously affect the normal use of the surveying instrument, reduce the light transmittance and imaging clarity of the lens, and thus affect the accuracy of the measurement data. This fog problem is relatively common in outdoor surveying operations and brings many inconveniences to surveying work.

[0004] The traditional method for defogging surveying instruments is mainly to disassemble the lens to wipe off the fog. This method has many defects. First of all, disassembling the lens is a relatively complex operation process that requires professional skills. General surveying staff may not be able to master it proficiently, and improper operation may also damage the surveying instrument, affecting its accuracy and service life. Secondly, the process of disassembling the lens to wipe off the fog is rather cumbersome and takes a lot of time. In surveying work, time is often very precious, especially in some urgent measurement tasks or projects that require continuous measurement. This defogging method will seriously affect work efficiency. Content of the Utility Model

[0005] (1) Technical Problem

[0006] The utility model provides a defogging device for the lens of a surveying instrument in surveying engineering, aiming to solve the problems that fog is likely to form inside the lens of the surveying instrument and the traditional defogging method is inefficient.

[0007] (2) Technical Content

[0008] To solve the above technical problems, the technical solution of the present utility model is as follows: A defogging device for a surveying and mapping instrument lens in a surveying and mapping project, comprising a surveying and mapping instrument body and a defogging mechanism. An air inlet joint and an air outlet joint are provided on the side of the inner cavity of the lens of the surveying and mapping instrument body. The defogging mechanism is communicated with the inner cavity of the lens of the surveying and mapping instrument body through the air inlet joint and the air outlet joint. A blowing pipeline is fixedly provided at the upper part of the inner cavity of the lens of the surveying and mapping instrument body, and an exhaust pipeline is fixedly provided at the bottom of the inner cavity of the lens of the surveying and mapping instrument body. The defogging mechanism includes a circulation fan. The air outlet end of the circulation fan is communicated with a heating component. The other end of the heating component is communicated with the air inlet joint through a blowing hose. The air inlet end of the circulation fan is communicated with a dehumidification and filtration component. The other end of the dehumidification and filtration component is communicated with the air outlet joint through an exhaust hose.

[0009] Further, the end of the air inlet joint extending into the inner cavity of the lens of the surveying and mapping instrument body is communicated with the blowing pipeline, and the air outlet joint is connected to the exhaust pipeline.

[0010] Further, the heating component includes a housing fixedly provided at the air outlet end of the circulation fan. An electric heating wire is fixedly provided inside the housing, and a temperature sensor is fixedly provided inside the housing. A PLC controller is fixedly provided outside the circulation fan. The temperature sensor and the electric heating wire are both electrically connected to the PLC controller.

[0011] Further, the dehumidification and filtration component includes a second housing fixedly provided at the air inlet end of the circulation fan. A dust-proof net and a silica gel dehumidification component are fixedly provided inside the second housing in sequence from bottom to top. The silica gel dehumidification component includes a hollow box body and silica gel drying particles filled inside.

[0012] Further, a plurality of air blowing ports with the blowing direction pointing to the inner wall of the lens are provided on the blowing pipeline.

[0013] (III) Technical effects

[0014] The present utility model has the following advantages compared with the prior art:

[0015] 1. Improve defogging efficiency: The circulation fan, heating component and dehumidification and filtration component in the defogging mechanism work together to quickly remove the fog inside the lens. The circulation fan promotes the circulation of air between the inner cavity of the lens and the defogging mechanism. The heating component heats the air, and the hot air blows to the inner wall of the lens through the air blowing ports on the blowing pipeline, so that the fog quickly evaporates. Compared with the traditional method of disassembling the lens to wipe off the fog, this method greatly shortens the defogging time and can ensure the continuity of the surveying and mapping work. Removing the fog quickly and effectively can quickly restore the light transmittance and imaging clarity of the lens to normal, thus ensuring the optical performance of the surveying and mapping instrument lens and improving the accuracy of the surveying and mapping data.

[0016] 2. Avoid disassembly risks: There is no need to disassemble the lens for defogging, which avoids damage to the surveying instrument caused by improper operation during the disassembly process, such as scratches on the lens and loosening of the connection part with the body. This helps maintain the integrity of the surveying instrument, extend its service life, and reduce maintenance costs.

[0017] 3. Automatically adjust the temperature: The temperature sensor in the heating component cooperates with the PLC controller to automatically adjust the heating temperature of the electric heating wire according to the actual needs of the lens cavity. This automated temperature control ensures that the temperature of the hot air during the defogging process can quickly evaporate the fog and will not damage the lens due to excessive temperature.

[0018] 4. Automatic dehumidification and filtration: The silica gel dehumidification component and dust filter in the dehumidification and filtration component can automatically dehumidify and filter the circulating air, removing water vapor and dust in it, ensuring that the air entering the lens cavity is dry and clean, further optimizing the defogging effect, and at the same time reducing the impact of dust accumulation inside the lens on the optical performance. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of a lens defogging device for a surveying instrument in a surveying project of the present utility model Figure 1 .

[0020] Figure 2 is a three-dimensional structural schematic diagram of a lens defogging device for a surveying instrument in a surveying project of the present utility model Figure 2 .

[0021] Figure 3 is a three-dimensional structural schematic diagram of a lens defogging device for a surveying instrument in a surveying project of the present utility model Figure 3 .

[0022] Figure 4 is a front view structural schematic diagram of a lens defogging device for a surveying instrument in a surveying project of the present utility model.

[0023] As shown in the figure: 1. Surveying instrument body; 2. Air inlet joint; 3. Blowing pipeline; 4. Exhaust pipeline; 5. Circulating fan; 6. Heating component; 7. Blowing hose; 8. Exhaust joint; 9. Dehumidification and filtration component; 10. Exhaust hose; 11. Housing; 12. Electric heating wire; 13. Temperature sensor; 14. PLC controller; 15. Second housing; 16. Dust filter; 17. Silica gel dehumidification component; 18. Air outlet. Detailed Implementation Modes

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present utility model.

[0025] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, terms such as "provided with", "installed", "connected", "coupled", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The following further describes the present utility model in detail with reference to the drawings.

[0027] Combined with the attached Figure 1 to the attached Figure 4 A defogging device for a surveying and mapping instrument lens in a surveying and mapping project includes a surveying and mapping instrument body 1 and a defogging mechanism. An air inlet joint 2 and an air outlet joint 8 are provided on the side of the inner cavity of the lens of the surveying and mapping instrument body 1. The defogging mechanism is communicated with the inner cavity of the lens of the surveying and mapping instrument body 1 through the air inlet joint 2 and the air outlet joint 8. A blowing pipeline 3 is fixedly provided at the upper part of the inner cavity of the lens of the surveying and mapping instrument body 1. A plurality of air blowing ports 18 with the blowing direction pointing to the inner wall of the lens are provided on the blowing pipeline 3. An exhaust pipeline 4 is fixedly provided at the bottom of the inner cavity of the lens of the surveying and mapping instrument body 1. The defogging mechanism includes a circulation fan 5. The air outlet end of the circulation fan 5 is communicated with a heating component 6. The other end of the heating component 6 is communicated with the air inlet joint 2 through a blowing hose 7. The air inlet end of the circulation fan 5 is communicated with a dehumidification and filtration component 9. The other end of the dehumidification and filtration component 9 is communicated with the air outlet joint 8 through an exhaust hose 10. The end of the air inlet joint 2 extending into the inner cavity of the lens of the surveying and mapping instrument body 1 is communicated with the blowing pipeline 3, and the air outlet joint 8 is connected to the exhaust pipeline 4.

[0028] In this embodiment, as a preferred technical solution, the heating component 6 includes a housing 11 fixedly provided at the air outlet end of the circulation fan 5. An electric heating wire 12 is fixedly provided inside the housing 11. A temperature sensor 13 is fixedly provided inside the housing 11. A PLC controller 14 is fixedly provided outside the circulation fan 5. The temperature sensor 13 and the electric heating wire 12 are both electrically connected to the PLC controller 14.

[0029] In this embodiment, as a preferred technical solution, the dehumidification and filtration component 9 includes a second housing 15 fixedly arranged at the air inlet end of the circulation fan 5. Inside the second housing 15, a dust-proof net 16 and a silica gel dehumidification component 17 are fixedly arranged in sequence from bottom to top. The silica gel dehumidification component includes a hollow box body and silica gel drying particles filled inside.

[0030] The working principle of a fog-removing device for a surveying and mapping instrument lens in a surveying and mapping project of the present utility model is as follows: This fog-removing device for a surveying and mapping instrument lens mainly removes the fog inside the lens based on the principles of air circulation, heating, dehumidification, and filtration. The circulation fan 5 serves as a power source to drive the air to circulate between the lens inner cavity of the surveying and mapping instrument body 1 and the fog-removing mechanism. The air enters the dehumidification and filtration component 9 from the lens inner cavity through the exhaust connection 8 and the exhaust hose 10. In the dehumidification and filtration component 9, the air first passes through the dust-proof net 16 to filter out impurities such as dust, and then passes through the silica gel dehumidification component 17 to remove water vapor, becoming dry and clean. Then, the dry air enters the circulation fan 5 and is sent by the circulation fan 5 into the heating component 6. In the heating component 6, the electric heating wire 12 heats the air under the control of the PLC controller 14 according to the temperature signal fed back by the temperature sensor 13. The heated air enters the blowing pipeline 3 in the lens inner cavity through the blowing hose 7 and the air inlet connection 2, and finally blows out from the air outlet 18. The hot air blows towards the inner wall of the lens to evaporate the fog, and the evaporated water vapor enters the dehumidification and filtration component 9 again with the air circulation and is removed. In this way, the cycle is repeated to achieve the purpose of fog removal.

[0031] The usage process of a fog-removing device for a surveying and mapping instrument lens in a surveying and mapping project of the present utility model is as follows:

[0032] 1. When fog removal is not required, the fog-removing mechanism and the surveying and mapping instrument body 1 are placed separately, and the air inlet connection 2 and the exhaust connection 8 are blocked with soft rubber plugs. When fog removal is required, check the connection between the fog-removing mechanism and the lens inner cavity of the surveying and mapping instrument body 1, that is, whether the connections between the air inlet connection 2 and the blowing pipeline 3, the exhaust connection 8 and the exhaust pipeline 4, the blowing hose 7 and the air inlet connection 2, and the exhaust hose 10 and the exhaust connection 8 are firm.

[0033] 2. Start the circulation fan 5, and the circulation fan 5 starts to work. The air in the lens inner cavity starts to circulate under the action of the fan. The air is first drawn from the exhaust pipeline 4 at the bottom of the lens inner cavity through the exhaust connection 8 and the exhaust hose 10 into the dehumidification and filtration component 9.

[0034] 3. Air dehumidification and filtration. In the dehumidification and filtration component 9, the air first passes through the dust-proof net 16 inside the second housing 15, and the dust-proof net 16 intercepts particulate matters such as dust and impurities in the air. Then the air passes through the silica gel dehumidification component 17, and the silica gel drying particles in the silica gel dehumidification component 17 adsorb the water vapor in the air, making the air dry and clean.

[0035] 4. Air heating: The air that has been dehumidified and filtered enters the circulation fan 5 and then is sent into the heating component 6. Inside the heating component 6, the electric heating wire 12 fixed inside the housing 11 starts to heat the air. At the same time, the temperature sensor 13 monitors the temperature of the air in real time and feeds the temperature signal back to the PLC controller 14. The PLC controller 14 compares the set temperature value with the signal fed back by the temperature sensor 13 and automatically controls the heating power of the electric heating wire 12 to ensure that the temperature of the heated air is appropriate, which can quickly evaporate the fog on the inner wall of the lens without damaging the lens.

[0036] 5. Hot air defogging: The heated air enters the blowing duct 3 in the lens cavity through the blowing hose 7 and the air inlet joint 2. Then, the hot air blows out from the air outlet 18 on the blowing duct 3, and the blowing direction of the air outlet 18 points to the inner wall of the lens. The hot air contacts the inner wall of the lens, causing the fog to quickly evaporate, thus achieving the purpose of removing the fog inside the lens.

[0037] 6. Circulating defogging: The evaporated water vapor enters the dehumidification and filtration component 9 again with the air circulation and is removed. It works in such a cycle until the fog inside the lens is completely cleared and the clear imaging of the lens is restored. Finally, the defogging mechanism is removed, and the air inlet joint 2 and the exhaust joint 8 are sealed with soft rubber plugs.

[0038] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative purpose of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A defogging device for a surveying and mapping engineering surveying instrument lens, comprising a surveying instrument body (1) and a defogging mechanism, wherein an air inlet joint (2) and an air exhaust joint (8) are provided on the side of the lens inner cavity of the surveying instrument body (1), and the defogging mechanism is connected to the lens inner cavity of the surveying instrument body (1) through the air inlet joint (2) and the air exhaust joint (8), and is characterized in that: A blowing duct (3) is fixedly provided at the upper part of the lens inner cavity of the surveying instrument body (1), and an exhaust duct (4) is fixedly provided at the bottom of the lens inner cavity of the surveying instrument body (1). The defogging mechanism comprises a circulating fan (5), the air outlet end of the circulating fan (5) is connected to a heating component (6), the other end of the heating component (6) is connected to an air inlet joint (2) through a blowing hose (7), the air inlet end of the circulating fan (5) is connected to a dehumidification filter component (9), and the other end of the dehumidification filter component (9) is connected to an exhaust joint (8) through an exhaust hose (10).

2. The lens defogging device for surveying and mapping engineering surveying and mapping instrument according to claim 1 is characterized by: The air inlet connector (2) extends into one end of the lens inner cavity of the surveying and mapping instrument body (1) and is connected to the air blowing duct (3), and the air exhaust connector (8) is connected to the air exhaust duct (4).

3. The lens defogging device for surveying and mapping engineering surveying and mapping instrument according to claim 1 is characterized by: The heating component (6) comprises a shell (11) fixedly arranged at the air outlet end of the circulation fan (5), an electric heating wire (12) fixedly arranged inside the shell (11), a temperature sensor (13) fixedly arranged inside the shell (11), a PLC controller (14) fixedly arranged outside the circulation fan (5), and the temperature sensor (13) and the electric heating wire (12) are both electrically connected to the PLC controller (14).

4. The lens defogging device for surveying and mapping engineering surveying and mapping instrument according to claim 1 is characterized by: The dehumidification filter assembly (9) comprises a second shell (15) fixedly arranged at the air inlet end of the circulation fan (5), and a dustproof net (16) and a silica gel dehumidification assembly (17) are fixedly arranged in sequence from bottom to top inside the second shell (15), and the silica gel dehumidification assembly comprises a hollow box body and silica gel drying particles filled inside the hollow box body.

5. The lens defogging device for surveying and mapping engineering surveying and mapping instrument according to claim 1, characterized in that: The air blowing duct (3) is provided with a plurality of air blowing openings (18) with the air blowing direction pointing toward the inner wall of the lens.

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