Compact optical filter wheel type multichannel radiometer mechanism

Abstract

The utility model discloses a compact optical filter wheel type multi-channel radiometer mechanism, relates to the technical field of radiometers, and aims to solve the technical problem that the overall size is relatively large due to the fact that an optical head of the existing multi-channel radiometer is separated from a control electric box. The compact optical filter wheel type multi-channel radiometer mechanism comprises a shell of which one side is provided with a cable socket, a mounting base plate is fixedly arranged at one end of the shell in a closed mode, a visible channel and an infrared channel are fixedly mounted on the face, facing the shell, of the mounting base plate, a support is fixedly mounted at the ends, away from the mounting base plate, of the visible channel and the infrared channel, and a rotating shaft is rotatably mounted in the support. A rotating shaft is arranged on the support, an optical filter wheel body is fixedly arranged on the outer edge face of the rotating shaft, outer teeth are formed on the outer edge face of the optical filter wheel body, a plurality of band-pass optical filters are embedded in the optical filter wheel body, a driving motor is fixedly installed on one side of the support, and the driving motor is connected with a gear which can be rotationally meshed with the outer teeth through a motor shaft. The optical head has the advantage of reducing the complexity and the size of the optical head.

Description

Technical Field

[0001] The utility model relates to the technical field of radiometers, and more specifically, to a compact filter wheel type multi-channel radiometer mechanism. Background Art

[0002] Multi-channel radiometers have a wide range of applications in the fields of environmental monitoring, meteorological observation, agricultural research, etc., and can be used for measuring parameters such as atmospheric aerosol thickness, water vapor content, solar radiation measurement, and ground object reflectivity. At present, the multi-channel radiometers used in China all have the optical head separated from the control electric box, resulting in a relatively large overall volume; in addition, in order to shorten the measurement time, some designs use one detector for each channel, which can collect multiple measurement signals simultaneously, but this also increases the volume of the optical head and limits the miniaturization potential of the system.

[0003] In view of this, we propose a compact filter wheel type multi-channel radiometer mechanism. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet the actual needs, and provide a compact filter wheel type multi-channel radiometer mechanism to solve the technical problem that the current existing multi-channel radiometers have the optical head separated from the control electric box, resulting in a relatively large overall volume.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A compact filter wheel type multi-channel radiometer mechanism, including a housing with a cable socket arranged on one side;

[0006] One end of the housing is fixedly closed with an installation substrate. On the side of the installation substrate facing the housing, a visible channel and an infrared channel are fixedly installed. The ends of the visible channel and the infrared channel far from the installation substrate are jointly fixedly installed with a bracket. A rotating shaft is rotatably installed inside the bracket. An outer gear tooth is fixedly arranged on the outer edge surface of the rotating shaft. A filter wheel body is embedded with a plurality of band-pass filters. A driving motor is fixedly installed on one side of the bracket. The driving motor is connected by a motor shaft with a gear that can rotatably engage with the outer gear tooth. A signal amplification module is fixedly arranged between the bracket and the installation substrate. A main control acquisition module is arranged inside the housing between the cable socket and the bracket.

[0007] The present utility model integrates the visible channel, infrared channel, signal amplification module, and main control acquisition module after modular unit design inside the optical head, optimizes the internal wiring layout, effectively reduces the overall size of the system, and the gear engages with the external teeth on the edge of the filter wheel body for transmission, enabling the filter wheel body to rotate 360 degrees around the rotation axis. Multiple band-pass filters embedded in the filter wheel body are used to selectively transmit light radiation within a specific wavelength range. After the band-pass filters are reasonably arranged, the centers of two band-pass filters can be simultaneously aligned with the optical axes of the visible channel and the infrared channel respectively during each measurement, realizing simultaneous measurement by the visible detector and the infrared detector. Two channels are used to achieve multi-channel multiplexing, reducing the number of required optical channels and detectors, thereby reducing the complexity and volume of the optical head.

[0008] Preferably, a target detector is fixedly installed on one side of the mounting substrate away from the visible channel and the infrared channel, and the target detector is arranged in parallel with the visible channel and the infrared channel.

[0009] Preferably, a visible stray light elimination diaphragm for eliminating stray light outside the field of view of the visible channel is fixedly installed at the front end position of the visible channel on the side of the mounting substrate where the target detector is provided.

[0010] Preferably, an infrared stray light elimination diaphragm for eliminating stray light outside the field of view of the infrared channel is fixedly installed at the front end position of the infrared channel on the side of the mounting substrate where the target detector is provided, and a waterproof breathable valve for balancing the air pressure inside and outside the housing is fixedly provided on the side of the mounting substrate where the target detector is provided.

[0011] Preferably, the filter wheel body is installed at the ends of the visible channel and the infrared channel, and a visible detector and an infrared detector are installed on the other side of the filter wheel body. The axis of the visible detector coincides with the optical axis of the visible channel, and the axis of the infrared detector coincides with the optical axis of the infrared channel.

[0012] Preferably, an optical lens one for converging the incident light of the measurement target onto the visible detector is arranged inside the visible channel, and an optical lens two for converging the incident light of the measurement target onto the infrared detector is arranged inside the infrared channel.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] The utility model integrates the visible channel, infrared channel, signal amplification module and main control acquisition module after modular unit design inside the optical head, optimizes the internal wiring layout, effectively reduces the overall size of the system, and the gear meshes with the external teeth on the edge of the filter wheel body for transmission, enabling the filter wheel body to rotate 360 degrees around the rotation axis. A plurality of band-pass filters are embedded in the filter wheel body, which are used to selectively transmit light radiation within a specific wavelength range. After the band-pass filters are reasonably arranged, the centers of two band-pass filters can be simultaneously aligned with the optical axes of the visible channel and the infrared channel respectively during each measurement, realizing the simultaneous measurement of the visible detector and the infrared detector. Two channels are used to achieve multi-channel multiplexing, reducing the number of required optical channels and detectors, thereby reducing the complexity and volume of the optical head, and solving the problem that the existing multi-channel radiometers have the optical head and the control electric box separated, resulting in a relatively large overall volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model.

[0016] Description of the reference numerals in the drawings:

[0017] 1. Mounting substrate; 2. Visible stray light diaphragm; 3. Infrared stray light diaphragm; 4. Target detector; 5. Visible channel; 6. Infrared channel; 7. Rotation axis; 8. Band-pass filter; 9. Filter wheel body; 10. Visible detector; 11. Infrared detector; 12. Main control acquisition module; 13. Driving motor; 14. Gear; 15. Signal amplification module; 16. Waterproof and breathable valve; 17. Cable socket; 18. Housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] As Figure 1 shown, a compact filter wheel type multi-channel radiometer mechanism related to the utility model includes a housing 18 with a cable socket 17 arranged on one side. One end of the housing 18 is fixedly closed with a mounting substrate 1. A visible channel 5 and an infrared channel 6 are fixedly installed on the side of the mounting substrate 1 facing the housing 18. A bracket is fixedly installed at the ends of the visible channel 5 and the infrared channel 6 away from the mounting substrate 1. A rotation axis 7 is rotatably installed inside the bracket. An external tooth is formed on the outer edge surface of the rotation axis 7, and a filter wheel body 9 is fixedly arranged on the outer edge surface of the rotation axis 7. A plurality of band-pass filters 8 are embedded in the filter wheel body 9. A driving motor 13 is fixedly installed on one side of the bracket. The driving motor 13 is connected by a motor shaft with a gear 14 that can rotatably mesh with the external teeth. A signal amplification module 15 is fixedly arranged between the bracket and the mounting substrate 1. A main control acquisition module 12 is arranged inside the housing 18 between the cable socket 17 and the bracket.

[0019] The signal amplification module 15 is used to amplify the electrical signals generated by the visible detector 10 and the infrared detector 11;

[0020] The main control and acquisition module 12 is used for functions such as signal acquisition measurement and controlling the driving motor 13.

[0021] In the embodiment of the present utility model, as Figure 1 shown, a target detector 4 is fixedly installed on one side of the mounting substrate 1 away from the visible channel 5 and the infrared channel 6. The target detector 4 is arranged in parallel with the visible channel 5 and the infrared channel 6. A visible stray light elimination diaphragm 2 for eliminating the stray light outside the field of view of the visible channel is fixedly installed on the side of the mounting substrate 1 where the target detector 4 is located and at the front end position of the visible channel 5. An infrared stray light elimination diaphragm 3 for eliminating the stray light outside the field of view of the infrared channel is fixedly installed on the side of the mounting substrate 1 where the target detector 4 is located and at the front end position of the infrared channel 6. A waterproof breathable valve 16 for balancing the air pressure inside and outside the housing 18 is fixedly arranged on the side of the mounting substrate 1 where the target detector 4 is located.

[0022] In the embodiment of the present utility model, as Figure 1 shown, the filter wheel body 9 is installed at the ends of the visible channel 5 and the infrared channel 6. A visible detector 10 and an infrared detector 11 are installed on the other side of the filter wheel body 9. The axis of the visible detector 10 coincides with the optical axis of the visible channel 5, and the axis of the infrared detector 11 coincides with the optical axis of the infrared channel 6. An optical lens one for converging the incident light of the measurement target onto the visible detector 10 is arranged inside the visible channel 5, and an optical lens two for converging the incident light of the measurement target onto the infrared detector 11 is arranged inside the infrared channel 6.

[0023] The embodiments disclosed in the present utility model are preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A compact filter wheel multi-channel radiometer mechanism, characterized in that: It comprises a housing (18) with a cable socket (17) disposed on one side; A mounting substrate (1) is fixedly mounted on one end of the housing (18), a visible channel (5) and an infrared channel (6) are fixedly mounted on a side of the mounting substrate (1) facing the housing (18), a bracket is fixedly mounted on one end of the visible channel (5) and the infrared channel (6) away from the mounting substrate (1), a rotating shaft (7) is rotatably mounted inside the bracket, a filter wheel body (9) is fixedly mounted on the outer edge surface of the rotating shaft (7), external teeth are formed on the outer edge surface of the filter wheel body (9), and a plurality of bandpass filters (8) are embedded in the filter wheel body (9), a driving motor (13) is fixedly mounted on one side of the bracket, the driving motor (13) is connected to a gear (14) rotatably meshed with the external teeth via a motor shaft, a signal amplification module (15) is fixedly mounted between the bracket and the mounting substrate (1), and a main control acquisition module (12) is arranged inside the housing (18) between the cable socket (17) and the bracket.

2. A compact filter wheel multi-channel radiometer mechanism according to claim 1, characterized in that: A target detector (4) is fixedly mounted on a side of the mounting substrate (1) away from the visible channel (5) and the infrared channel (6); the target detector (4) is arranged in parallel with the visible channel (5) and the infrared channel (6).

3. A compact filter wheel multi-channel radiometer mechanism according to claim 1, characterized in that: The mounting substrate (1) is provided with a target detector (4) on one side and a visible stray light elimination diaphragm (2) for eliminating stray light outside the visible channel field of view is fixedly installed at the front end of the visible channel (5).

4. A compact filter wheel multi-channel radiometer mechanism according to claim 3, characterized in that: The mounting substrate (1) is provided with a target detector (4) on one side and an infrared stray light elimination diaphragm (3) for eliminating stray light outside the infrared channel field of view is fixedly installed at the front end of the infrared channel (6); and the mounting substrate (1) is provided with a waterproof breathable valve (16) for balancing the air pressure inside and outside the housing (18) on one side.

5. A compact filter wheel multi-channel radiometer mechanism according to claim 1, characterized in that: The filter wheel body (9) is installed at the ends of the visible channel (5) and the infrared channel (6); a visible detector (10) and an infrared detector (11) are installed on the other side of the filter wheel body (9); the axis of the visible detector (10) coincides with the optical axis of the visible channel (5), and the axis of the infrared detector (11) coincides with the optical axis of the infrared channel (6).

6. A compact filter wheel multi-channel radiometer mechanism according to claim 1, characterized in that: An optical lens 1 for converging incident light of a measurement target onto a visible detector (10) is disposed inside the visible channel (5), and an optical lens 2 for converging incident light of a measurement target onto an infrared detector (11) is disposed inside the infrared channel (6).

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