Light source device

Abstract

The utility model relates to a light source device, which comprises a containing cabin, a light source, a light source, a light source and a light source, and is characterized in that the containing cabin is mounted on a tank flange sight glass of a storage tank; the light source is mounted in the accommodating cabin; the calibration mechanism is installed in the containing cabin, the calibration mechanism comprises an optical fiber, a collimating mirror and an electromagnetic valve, the tank body flange sight glass, the optical fiber and the collimating mirror form an optical path, and the electromagnetic valve controls connection and disconnection of the optical path through opening and closing; the front cover is installed at the measuring end of the containing cabin and blocks the opening, a center hole is formed in the front cover, and the central axis of the optical fiber, the central axis of the collimating lens and the central axis of the center hole coincide; the adapter plate is detachably installed on the front cover, a through hole is formed in the adapter plate, the through hole and the center hole are coaxially arranged, and the containing cabin is installed on the tank body flange sight glass through the adapter plate. According to the light source device provided by the utility model, the light source and the calibration mechanism are integrated in the accommodating cabin, so that the light source device has a better integration effect.

Description

Technical Field

[0001] This utility model relates to the field of near-infrared detection auxiliary equipment technology, specifically to a light source device. Background Technology

[0002] Near-infrared (NIR) detection technology performs sample analysis using signal acquisition equipment, optical paths, and specialized light source generators. The stability of the light source is a key factor in ensuring detection accuracy. Existing NIR detection solutions often face numerous engineering limitations. For example, integrated devices designed for low cost and miniaturization are limited by size and power consumption, making them unable to meet the required luminous flux in confined spaces. Split-type devices suffer from high costs due to redundancy and cumbersome calibration processes caused by complex installation. These limitations prevent the light source equipment from providing accurate and stable high-quality light. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a light source device.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A light source device, comprising:

[0006] A containment compartment, which is installed on the sight glass of the tank flange of the storage tank;

[0007] A light source, which is installed inside the accommodating compartment;

[0008] The calibration mechanism is installed inside the accommodating chamber. The calibration mechanism includes an optical fiber, a collimating lens, and a solenoid valve. The tank flange sight glass, the optical fiber, and the collimating lens constitute an optical path. The solenoid valve controls the conduction and cutoff of the optical path by opening and closing.

[0009] A front cover is installed on the measuring end of the accommodating chamber and seals the opening. A central hole is provided on the front cover, and the central axis of the optical fiber, the collimating lens and the central hole coincide.

[0010] An adapter plate is detachably mounted on the front cover. The adapter plate has a through hole that is coaxial with the center hole. The accommodating compartment is mounted on the tank flange sight glass via the adapter plate.

[0011] In some embodiments, the light source device further includes:

[0012] A support plate is disposed within the accommodating chamber. The support plate has optical fiber mounting holes and light source mounting holes. The collimating lens is installed in the optical fiber mounting holes. One end of the optical fiber is installed in the optical fiber mounting holes and is coaxially arranged with the collimating lens. The light source is installed in the light source mounting holes.

[0013] In some embodiments, the light source is a halogen bulb.

[0014] In some embodiments, there are multiple halogen bulbs, each arranged around the collimating lens.

[0015] In some embodiments, the accommodating compartment further includes a base plate, on which the support plate is mounted.

[0016] In some embodiments, a mounting bracket is also mounted on the support plate.

[0017] In some embodiments, the electromagnetic element includes:

[0018] Solenoid valve;

[0019] A reference plate is connected to the swing part of the solenoid valve and rotates with the swing part to block or avoid the center hole of the front cover.

[0020] An electromagnet is disposed on both sides of the swinging part and drives the swinging part to rotate when energized.

[0021] The light source device provided by this utility model integrates the light source and calibration mechanism in the housing, and the housing is installed on the sight glass of the tank flange. It has a good integration effect, a simple and compact structure, and avoids the cumbersome installation and calibration problems caused by the split structure. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of the light source device provided by this utility model;

[0023] Figure 2 This is the second schematic diagram of the structure of the light source device provided by this utility model;

[0024] Figure 3 This is the third schematic diagram of the structure of the light source device provided by this utility model;

[0025] Figure 4 The fourth schematic diagram of the structure of the light source device provided by this utility model;

[0026] Figure 5 This is the fifth schematic diagram of the structure of the light source device provided by this utility model;

[0027] Figure 6This is the sixth schematic diagram of the structure of the light source device provided by this utility model;

[0028] Figure 7 The seventh schematic diagram of the light source device provided by this utility model;

[0029] Figure 8 This is a schematic diagram of the top cover in the light source device provided by this utility model.

[0030] Figure 9 This is a schematic diagram of the structure of the front cover in the light source device provided by this utility model;

[0031] Figure 10 This is a schematic diagram of the structure of the base plate in the light source device provided by this utility model;

[0032] Figure 11 This is a schematic diagram of the support plate in the light source device provided by this utility model.

[0033] Figure 12 This is a schematic diagram of the structure of the halogen bulb in the light source device provided by this utility model.

[0034] Figure 13 This is a schematic diagram of the collimating lens in the light source device provided by this utility model.

[0035] Figure 14 This is a schematic diagram of the electromagnetic components in the light source device provided by this utility model.

[0036] Figure 15 A schematic diagram of the adapter plate in the light source device provided by this utility model;

[0037] Figure 16 This is a schematic diagram of the optical fiber structure in the light source device provided by this utility model.

[0038] Figure 17 This is a schematic diagram of the mounting bracket in the light source device provided by this utility model;

[0039] Figure 18 This is a schematic diagram of the internal components of the housing in the light source device provided by this utility model. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0043] Addressing the problems of existing light source generating devices being inconvenient to adjust luminous flux, difficult to calibrate, and complex to install, this invention adopts a simple structural design, facilitating manufacturing, providing ample internal space, reducing overall weight, and offering more effective heat dissipation. The device can support different types of light sources, including large and small spot sizes, and has high scalability, allowing for customized adapters to meet the needs of different detection windows. Furthermore, this invention also implements an automatic light source calibration function, improving the accuracy and stability of the light source.

[0044] In one specific implementation, such as Figure 1-18 As shown, the light source device provided by this utility model includes a housing, a light source, a calibration mechanism, and a controller. The housing is installed on the sight glass of the tank flange, and the tank can be used in various scenarios involving tanks, such as fermentation and chemical synthesis. The housing can be of various forms and is installed on the tank flange sight glass via connectors or its own structure. For example, the housing may include a bottom plate and a top cover. The top cover can be configured as an arc-shaped structure, with its bottom fixedly connected to the bottom plate. To ensure ventilation, multiple ventilation holes can be provided on the top cover.

[0045] The light source, specifically at least one halogen bulb, is installed within the accommodating chamber to provide the light source required for calibration. The calibration mechanism, also installed within the accommodating chamber, includes an optical fiber, a collimating lens, and a solenoid valve. The tank flange sight glass, the optical fiber, and the collimating lens constitute an optical path. The solenoid valve controls the conduction and cutoff of the optical path by opening and closing. The controller acquires a trigger command and the current ambient temperature, and generates an action command based on these parameters. This action command controls the rotation of the solenoid valve of the electromagnetic component to open or close the optical path. In other words, when the controller receives a trigger command and the current ambient temperature meets the requirements, it generates an action command. For example, if the controller has a preset normal operating temperature range (e.g., 18-25℃), and the trigger command is "Start Calibration," and the current temperature value is found to be within the preset temperature threshold range, a calibration command is generated. The solenoid valve receives the calibration command and activates, opening the optical path. Alternatively, if the trigger command is "Start Calibration," but the current ambient temperature exceeds the preset temperature threshold range, no calibration command will be generated. When the trigger command is to stop calibration, the temperature value still needs to be within the specified range. In this case, the solenoid valve is controlled to reverse its action to close the optical path. In this way, the current ambient temperature is integrated into the control algorithm, and calibration is only performed when the environment meets the calibration conditions, avoiding the influence of environmental factors on the calibration results and improving the accuracy of calibration. At the same time, the use of automatic control methods to realize the opening and closing of the optical path improves the automation performance.

[0046] Furthermore, to improve structural compactness while ensuring straight-line optical transmission, the measuring end of the housing has an opening. The light source device also includes a front cover, which is installed on the measuring end of the housing and seals the opening. The front cover has a central hole, and the central axes of the optical fiber, collimating lens, and the central hole coincide. For easy installation with a sight glass, an adapter plate is detachably mounted on the front cover. The adapter plate has a through hole coaxial with the central hole, allowing it to be mounted on the sight glass. Specifically, the adapter plate engages with the protruding portion of the front cover and is fixed to the three holes around the front cover using bolts.

[0047] In some embodiments, the light source device further includes a support plate disposed within the accommodating chamber and mounted on the base plate. The support plate has fiber optic mounting holes and light source mounting holes. A collimating lens is installed within the fiber optic mounting holes. One end of the fiber optic cable is installed within the fiber optic mounting hole and is coaxially aligned with the collimating lens. The light source is installed in the light source mounting hole. The fiber optic cable is mounted on the support plate, with one half of the fiber optic mounting hole at the center of the support plate housing the collimating lens and the other half housing the fiber optic cable. The fiber optic cable is positioned behind the collimating lens and is aligned with the collimating lens to ensure coaxiality.

[0048] In this way, the light source and optical fiber are installed inside the housing via a support plate, improving installation efficiency and structural compactness. The support plate also has mounting brackets for installing necessary electrical components such as circuit boards.

[0049] To ensure light source intensity, multiple halogen bulbs are used, each arranged around the collimating lens. In this embodiment, four halogen bulbs are evenly distributed around the circumference of the collimating lens. In principle, halogen bulbs are used because they provide a wider wavelength range. The near-infrared spectral acquisition system served by this light source device needs to operate in the near-infrared band (specifically, 900–1700 nm wavelengths in this product). Not all bulbs and emitters can provide this type of light; considering factors such as performance, cost, and attenuation, halogen bulbs are preferred. Structurally, all light sources in this device are bulbs, and all bulbs are halogen bulbs.

[0050] In some embodiments, the electromagnetic element includes a solenoid valve, a reference plate, and an electromagnet; wherein the reference plate is connected to the swing portion of the solenoid valve and rotates with the swing portion to block or avoid the center hole of the front cover; the electromagnet is disposed on both sides of the swing portion and drives the swing portion to rotate when energized. The reference plate is cut into a circle and pasted onto the swing portion of the solenoid valve. When energized, the solenoid valve rotates the swing portion to the position of the center hole of the front cover. Magnets are located on both sides of the swing portion; energization generates magnetism that attracts the swing portion of the solenoid valve to swing up and down. Figure 14 The circular part on the left side of the solenoid valve shown is the swing part.

[0051] In addition to the aforementioned light source device, this utility model also provides a calibration control method based on the aforementioned light source device, the method comprising:

[0052] Get the trigger command and the current ambient temperature;

[0053] An action command is generated based on the trigger command and the current ambient temperature. The action command is used to control the rotation of the solenoid valve of the electromagnetic component to open or close the optical path.

[0054] The current ambient temperature is acquired by other instruments (the spectrometer's built-in sensor) and then transmitted to the controller; this is typically temperature information. A preset valid range for the current ambient temperature is allowed; commands are only sent if the current ambient temperature falls within this range. The on / off strategy depends on the specific engineering requirements. In most scenarios, the strategy is as follows: when the temperature change exceeds a certain threshold, the host computer determines that a combination of actions is needed: calibration, then the solenoid valve closes the optical path for a specified period, and then the solenoid valve opens, restoring operation.

[0055] This utility model also provides a calibration control device based on the light source device described above, the device comprising:

[0056] The data acquisition unit is used to obtain the trigger command and the current ambient temperature;

[0057] The instruction generation unit is used to generate an action instruction based on the trigger instruction and the current ambient temperature. The action instruction is used to control the rotation of the solenoid valve of the electromagnetic component to open or close the optical path.

[0058] In one or more of the above-described specific embodiments, the light source device provided by this utility model integrates both the light source and the calibration mechanism within the housing, and installs the housing onto the tank flange sight glass. This integration provides a good effect, resulting in a simple and compact structure that avoids the cumbersome installation and calibration problems caused by separate structures. Furthermore, the device can support different types of light sources, including large and small spot light sources, and has high scalability, allowing for customized adapters to meet the needs of different detection windows. Specifically, scalability refers to the aforementioned adapter plate and support structure. This structure can be modified, or even new structures can be added, to address the structural and environmental requirements of the target tank to be installed, thus accommodating installation difficulties or additional requirements. Such modifications do not alter the function and structure of the light source, calibration mechanism, and other components within the housing, serving as a form of scalability for modular design. In addition, this utility model achieves automatic calibration of the light source through data acquisition and algorithms.

[0059] To facilitate understanding, the following uses a specific application scenario as an example to briefly describe the structural composition and working process of the light source device provided by this utility model.

[0060] like Figure 1-18 As shown, the light source device provided by this utility model includes a top cover 1 (such as...). Figure 8 (as shown), front cover 2 (as shown) Figure 9 As shown), base plate 3 (as shown) Figure 10 As shown), the top cover 1, front cover 2, and bottom plate 3 form a housing; the light source device also includes a support plate 4 disposed inside the housing (as shown). Figure 11 (as shown), halogen bulb 5 (such as) Figure 12 As shown), collimating lens 6 (as shown) Figure 13 As shown), electromagnetic component 7 (such as...) Figure 14 As shown), adapter board 8 (as shown) Figure 15 As shown), fiber optic 9 (as shown) Figure 16 As shown), mounting bracket 10 (as shown) Figure 17(As shown). During installation, first install the electromagnetic component 7 on the front cover 2. Install four halogen lamps 5 and a collimating lens 6 on the support plate 4. Install the required circuit boards and other electrical components on the mounting bracket 10. Install the assembled components on the base plate 3. Connect the optical fiber 9 to the collimating lens through the hole in the middle of the support plate 4. Pass the other end of the optical fiber through the hole reserved at the rear of the top cover 1. Install components such as fans and switches in the reserved holes at the rear of the top cover 1. Finally, fix the top cover 1 to the base plate 3. The adapter plate 8 is mainly used to connect the equipment to the tank flange sight glass. First, fix the adapter plate 8 to the flange sight glass, then fix the equipment to the adapter plate 8. Finally, the entire light source device can be fixed on the tank flange sight glass, providing a light source for the spectrometer during the spectrometer detection process.

[0061] During testing, the automatically calibrated light source device is first installed on the tank's viewing window. The power is turned on, the fan starts working, and the light source emits light via computer control. Halogen lamp 5 is activated, and the light source illuminates the medium inside the tank through the viewing window. The light is then reflected back into the light source (the interior of the light source refers to the interior of this device, including the front cover). Figure 9 The rear portion (which can be referred to as the internal portion) enters the optical fiber 9 through the collimating lens 6. A convex lens is embedded inside the collimating lens, which focuses the light reflected back into the light source. Since the collimating lens and the optical fiber are on a straight line, the focused light point can be directly focused on the front end of the optical fiber and thus enter the fiber. The collimating lens 6 allows sufficient light to enter the optical fiber 9. The light passes through the collimating lens 6 into the optical fiber 9 and then through the optical fiber 9 into the spectrometer (located at the other end of the optical fiber) for spectral analysis. When light source calibration is required, the controller receives a command to control the electromagnetic element 7. The swinging part of the electromagnetic element 7 moves upward, and the endpoint of the movement just blocks the center hole of the front cover. At this time, the light source is turned on, and the lamp shines on the reference plate on the electromagnetic element. The light returns to the collimating lens and the optical fiber to enter the spectrometer for light source calibration. After calibration, the computer controls the electromagnetic element's actuator to rotate downward. At this time, the center hole of the front cover is unobstructed, and normal data acquisition can be performed.

[0062] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this utility model should be included within the scope of protection of this utility model.

Claims

1. A light source device, characterized in that, include: A containment compartment, which is installed on the sight glass of the tank flange of the storage tank; A light source, which is installed inside the accommodating compartment; The calibration mechanism is installed inside the accommodating chamber. The calibration mechanism includes an optical fiber, a collimating lens, and a solenoid valve. The tank flange sight glass, the optical fiber, and the collimating lens constitute an optical path. The solenoid valve controls the conduction and cutoff of the optical path by opening and closing. A front cover is installed on the measuring end of the accommodating chamber and seals the opening of the accommodating chamber. A central hole is provided on the front cover, and the central axis of the optical fiber, the collimating lens and the central hole coincide. An adapter plate is detachably installed on the front cover. The adapter plate has a through hole that is coaxial with the center hole. The accommodating compartment is installed on the tank flange sight glass via the adapter plate.

2. The light source device according to claim 1, characterized in that, The light source device also includes: A support plate is disposed within the accommodating chamber. The support plate has optical fiber mounting holes and light source mounting holes. The collimating lens is installed in the optical fiber mounting holes. One end of the optical fiber is installed in the optical fiber mounting holes and is coaxially arranged with the collimating lens. The light source is installed in the light source mounting holes.

3. The light source device according to claim 2, characterized in that, The light source is a halogen bulb.

4. The light source device according to claim 3, characterized in that, There are multiple halogen bulbs, and each halogen bulb is arranged around the collimating lens.

5. The light source device according to claim 4, characterized in that, The accommodating compartment also includes a base plate, and the support plate is mounted on the base plate.

6. The light source device according to claim 5, characterized in that, The support plate is also equipped with a mounting bracket.

7. The light source device according to claim 6, characterized in that, Electromagnetic components include: Solenoid valve; A reference plate is connected to the swing part of the solenoid valve and rotates with the swing part to block or avoid the center hole of the front cover. An electromagnet is disposed on both sides of the swinging part and drives the swinging part to rotate when energized.

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