Sealed waterproof light quantum sensor

Abstract

The utility model belongs to the technical field of sensors, in particular relates to a sealed waterproof light quantum sensor, and aims to solve the problem that a photosensitive element of a conventional photosynthetic effective sensor is easily influenced by weather factors and water vapor in a measurement process due to the defects of a sealing structure. In the prior art, the waterproof problem is solved by using a drying device or adopting a large amount of potting glue, and the following scheme is provided: the waterproof device comprises a shell, the shape of the top of the shell is matched with that of a light filtering cap, the top of the light filtering cap is sleeved with a soft silica gel sheet, the light filtering cap is provided with an accommodating space, and a PCB assembly is installed in the accommodating space. The output end of the PCB assembly is connected with the transmission line, a locking ring is fixedly connected into the shell, the upper side of the locking ring makes contact with the PCB assembly and the light filtering cap, a quick and simple sealing structure is adopted, the light sensitive element is reliably protected, the sealing performance is high, cost is low, and the measuring effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a sealed and waterproof photon sensor. Background Art

[0002] All life on Earth depends on the sun for growth. Solar radiation is one of the fundamental elements for the survival and reproduction of life on Earth. Plant photosynthesis is inseparable from light radiation. In agricultural production, light conditions directly affect crop yield and quality. Traditional agriculture can only passively adapt to sunlight exposure and its diurnal and seasonal variations to create a light radiation environment suitable for plant growth. To achieve this light radiation environment regulation, it is necessary to accurately measure the photosynthetically active radiation of lighting sources—the amount of light radiation used by plants for photosynthesis.

[0003] A photon sensor uses the photoelectric effect to convert light energy into an electrical signal. It consists of a photosensor and a circuit system. The photosensor, typically a photodiode or photoresistor, senses light intensity and generates a corresponding change in current or resistance. The circuit system converts the electrical signal generated by the photosensor into a readable digital or analog signal.

[0004] Photon sensors are primarily used to measure photosynthetically active radiation (PAR), a key parameter for measuring the role of light in plant and crop growth. By measuring light absorption in plants and crops, photosynthetic activity sensors can be used to assess photosynthetic efficiency and crop growth. PAR sensors can also be used in agriculture, helping farmers determine optimal lighting conditions and irrigation strategies to improve crop yield and quality. They can also be used in environmental monitoring and ecological research, helping to understand the ecosystem functions of plant communities and their responses to environmental changes.

[0005] Existing traditional photosynthetically active sensors are susceptible to weather and moisture during measurement due to structural defects in their sealing structure. This often requires the use of internal drying devices or the use of large amounts of glue to address waterproofing issues. The desiccant requires regular inspection and replacement, and large quantities of glue must be dried before proceeding to the next step. This results in complex production processes and high labor costs. Utility Model Content

[0006] The utility model provides a sealed and waterproof photon sensor, which solves the shortcomings of the conventional photosynthetic active sensor in the prior art, that is, due to the defects of the sealing structure during the measurement process, the photosensor is easily affected by weather factors and water vapor, and often requires the use of a drying device or a large amount of glue filling to solve the waterproof problem.

[0007] The utility model provides the following technical solutions:

[0008] A sealed and waterproof optical quantum sensor includes a housing, the top shape of the housing being adapted to a filter cap, the top of the filter cap being sleeved with a soft silicone sheet, the filter cap being provided with a receiving space, a PCB assembly being mounted within the receiving space, the output end of the PCB assembly being connected to a transmission line, a locking ring being fixedly connected within the housing, the upper side of the locking ring being in contact with the PCB assembly and the filter cap, the locking ring pressing the PCB assembly, the filter cap, and the soft silicone sheet against the top of the housing, an upper layer of sealant being coated on the lower surface of the PCB assembly, and the housing being fixedly connected to a sealing base.

[0009] In this way, when the upper side of the locking ring pushes the PCB assembly, the filter cap and the soft silicone sheet on the top of the shell, and the soft silicone sheet is pressed between the shell and the filter cap to form a first seal, an upper layer of sealant is applied to the lower surface of the PCB assembly to form a second seal. The first and second seals can seal the PCB assembly and the filter cap to prevent water vapor from entering.

[0010] In a possible implementation, the upper layer of sealant is quick-drying silicone, and the second seal can be quickly formed by applying the quick-drying silicone.

[0011] In a possible implementation, a lower layer of sealant is further potted on the lower side of the locking ring. Potting the lower layer of sealant can form a third seal, thereby improving the sealing performance.

[0012] In a possible implementation, the lower layer of sealant is polyurethane silicone.

[0013] In a possible implementation, the polyurethane silicone occupies 1 / 4 of the capacity of the housing, and the soft silicone sheet, filter cap, PCB assembly and locking ring are all encapsulated in the polyurethane silicone.

[0014] In a possible implementation, a through hole is provided on the top of the housing, a diffuser is installed in the through hole, a protruding filter is provided in the middle of the filter cap, and the filter is in contact with the diffuser.

[0015] In a possible implementation, the soft silicone sheet is annular, the center hole of the soft silicone sheet is adapted to the size of the filter, and the first seal is formed by the soft silicone sheet.

[0016] In a possible implementation, the shell is made of aluminum alloy, an internal thread is provided on the inner side of the shell, the locking ring is connected to the internal thread through threads, and the locking ring can be fixedly connected to the shell through threads.

[0017] In a possible implementation, a threaded cylindrical wall is provided in the middle of the sealing base, the threaded cylindrical wall is fixedly connected to the internal thread of the outer shell via a thread, and the outer shell is fixedly connected to the sealing base.

[0018] In a possible implementation, a plurality of threaded holes are formed on the sealing base, and fixing screws are disposed in the threaded holes.

[0019] It should be understood that the above general description and the following detailed description are merely illustrative and do not limit the present invention.

[0020] The utility model has the advantages of simple and quick production and assembly and good protection performance, which well solves the protection problem, greatly improves the service life of the product, and enhances the stable and reliable measurement performance of the product.

[0021] In the utility model, a quick and simple sealing structure is adopted, the photosensitive element is reliably protected, the sealing performance is strong, the cost is low, and the measuring effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the explosion structure of a sealed and waterproof photon sensor provided in an embodiment of the present utility model.

[0023] Reference numerals:

[0024] 1. Housing; 2. Soft silicone sheet; 3. Filter cap; 4. PCB assembly; 5. Locking ring; 6. Threaded barrel wall; 7. Sealing base. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0026] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0027] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0028] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0029] Example, see Figure 1 A sealed and waterproof photon sensor includes a shell 1, which is made of aluminum alloy. An internal thread is provided on the inside of the shell 1. A locking ring 5 is connected to the internal thread through a thread. A threaded barrel wall 6 is provided in the middle of the sealing base 7. The threaded barrel wall 6 is fixedly connected to the internal thread of the shell 1 through a thread. A plurality of threaded holes are provided on the sealing base 7, and fixing screws are provided in the threaded holes.

[0030] The shape of the top of the shell 1 is adapted to the filter cap 3. A soft silicone sheet 2 is provided on the top of the filter cap 3. The filter cap 3 is provided with an accommodating space. A PCB assembly 4 is installed in the accommodating space. The output end of the PCB assembly 4 is connected to the transmission line. A locking ring 5 is fixedly connected to the shell 1. The upper side of the locking ring 5 contacts the PCB assembly 4 and the filter cap 3. The locking ring 5 presses the PCB assembly 4, the filter cap 3 and the soft silicone sheet 2 on the top of the shell 1. The lower surface of the PCB assembly 4 is coated with an upper layer of sealant. The upper layer of sealant is quick-drying silicone. The shell 1 is fixedly connected to the sealing base 7.

[0031] The lower side of the locking ring 5 is also potted with a lower layer of sealant, which is polyurethane silicone. The polyurethane silicone occupies 1 / 4 of the capacity of the shell. The soft silicone sheet 2, filter cap 3, PCB assembly 4 and locking ring 5 are all potted in the polyurethane silicone.

[0032] A through hole is provided on the top of the shell 1, and a diffuser is installed in the through hole. A protruding filter is provided in the middle of the filter cap 3, and the filter is in contact with the diffuser. The soft silicone sheet 2 is annular, and the center hole of the soft silicone sheet 2 is adapted to the size of the filter.

[0033] A sealed and waterproof optical quantum sensor, the structural components of which include an aluminum alloy shell 1, a soft silicone sheet, a high-polymer polytetrafluoroethylene filter cap 3, a PCB assembly 4 (photosensitive detection element, data acquisition and conversion circuit board), a locking ring 5, a communication cable and other components;

[0034] Product assembly process: First, put the soft silicone sheet on the top of the filter cap, then install the PCB assembly 4 in the filter cap 3.

[0035] The locking ring 5 is locked to hold the PCB, so that the silicone sheet is completely attached to the top of the aluminum alloy shell, completing the first fitting and sealing, and also achieving structural protection;

[0036] Then, the first glue filling process is carried out, and a small amount of white quick-drying silicone is applied to the PCB surface pressed by the locking ring 5. The purpose is to isolate the entire PCB assembly 4 from the outside, so that the photosensitive components are effectively protected and the second sealing protection is completed;

[0037] Fill the shell with black polyurethane silicone with good fluidity again, occupying 1 / 4 of the shell capacity, and fill all the internal parts of the shell with black glue. Let it dry and solidify in a 40-degree temperature environment for about 2 hours to form a smooth and beautiful soft solid surface, completing the third sealing protection. Cover the sealing base 7 and install the fixing plate to complete the assembly process.

[0038] After the product is sealed and assembled through the above process, no matter it is in a high or low temperature environment or completely immersed in water, the product has intact sealing performance and no water vapor penetrates, ensuring that the photosensitive components and circuits work stably and reliably, and ensuring that the protection level reaches IP68.

[0039] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The embodiments of the present utility model and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present utility model shall be based on the scope of protection of the claims.

Claims

1. A sealed and waterproof optical quantum sensor, characterized by: It includes a shell, the top shape of the shell is adapted to the filter cap, the top of the filter cap is covered with a soft silicone sheet, the filter cap is provided with a accommodating space, the PCB assembly is installed in the accommodating space, the output end of the PCB assembly is connected to the transmission line, a locking ring is fixedly connected to the shell, the upper side of the locking ring is in contact with the PCB assembly and the filter cap, the locking ring presses the PCB assembly, the filter cap and the soft silicone sheet on the top of the shell, the lower surface of the PCB assembly is coated with an upper layer of sealant, and the shell is fixedly connected to the sealing base.

2. The sealed and waterproof optical quantum sensor according to claim 1, characterized in that: The upper layer sealant is quick-drying silica gel.

3. The sealed and waterproof optical quantum sensor according to claim 2, characterized in that: The lower side of the locking ring is also sealed with a lower layer of sealant.

4. The sealed and waterproof optical quantum sensor according to claim 3, characterized in that: The lower layer of sealant is polyurethane silicone.

5. The sealed and waterproof optical quantum sensor according to claim 4, characterized in that: The polyurethane silicone occupies 1 / 4 of the capacity of the housing, and the soft silicone sheet, filter cap, PCB assembly and locking ring are all encapsulated in the polyurethane silicone.

6. The sealed and waterproof optical quantum sensor according to claim 1, characterized in that: The top of the shell is provided with a through hole, a diffuser is installed in the through hole, and a protruding filter is provided in the middle of the filter cap, and the filter is in contact with the diffuser.

7. The sealed and waterproof optical quantum sensor according to claim 6, characterized in that: The soft silicone sheet is annular, and the center hole of the soft silicone sheet is adapted to the size of the filter.

8. The sealed and waterproof optical quantum sensor according to claim 1, characterized in that: The shell is made of aluminum alloy, an internal thread is provided on the inner side of the shell, and the locking ring is connected to the internal thread through threads.

9. The sealed and waterproof optical quantum sensor according to claim 8, characterized in that: A threaded cylindrical wall is provided in the middle of the sealing base, and the threaded cylindrical wall is fixedly connected to the internal thread of the shell through threads.

10. A sealed and waterproof optical quantum sensor according to any one of claims 1 to 9, characterized in that: The sealing base is provided with a plurality of threaded holes, and fixing screws are arranged in the threaded holes.

Images