Multi-channel optical detection device

Abstract

The present invention discloses a multi-channel optical detection device, including a light source, a light source distributor and a detection component, wherein the light source distributor has a light-transmitting area and a light-shielding area; the detection component includes a light receiving unit, a photoelectric detection channel, and an optical sensor, wherein the light receiving unit receives light and transmits it to the photoelectric detection channel, and the light signal data generated by the feedback is then transmitted to the optical sensor for analysis to form electrical signal data. The light receiving unit of the present invention is arranged in a cluster, and after the light source distributor is driven to rotate by the driving component, each group of light receiving units takes turns to receive the light passing through the light-transmitting area. The beneficial effects of the present invention are mainly reflected in that the light receiving units at the same position in each group of light receiving units are connected to the same optical sensor through their respective one-to-one corresponding photoelectric detection channels, and the optical sensor can be selectively used for detection according to the photoelectric detection channel to be detected, thereby improving the utilization rate of the optical sensor and avoiding the waste of resources.

Description

Technical Field

[0001] The present invention relates to the technical field of optical signal processing, and in particular to a multi-channel optical detection device. Background Art

[0002] In the common inspection instruments based on optical signal processing on the market, optical sensors and specific algorithms are often used to parse the optical signal data fed back through the photoelectric detection channel (including the object to be detected), so as to parse the required electrical signal data.

[0003] For example, the multi-channel optical detection device for dry chemical analysis with authorization announcement number CN 201897567 U consists of a light source incident channel and four photoelectric detection channels. The four photoelectric detection channels are symmetrically distributed around the device, and one end of each photoelectric detection channel is a reagent sheet. The feedback light signal data is received and processed by the corresponding detector (optical sensor) set at the other end. The photoelectric detection channels in the device correspond one-to-one to the detector (optical sensor), and the detector (optical sensor) is expensive, resulting in high overall cost of the detection device and reduced product competitiveness.

[0004] In addition, more importantly, in actual detection, not all photoelectric detection channels need to be detected synchronously every time. It may be necessary to detect only the first and second photoelectric detection channels. However, the device detects all photoelectric detection channels synchronously, which leads to low utilization rate of the detector and waste of resources. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a multi-channel optical detection device.

[0006] A multi-channel optical detection device, comprising:

[0007] Light source, which produces light;

[0008] A light source distributor, having a light-transmitting area and a light-shielding area, so that a part of the light passes through the light-transmitting area, and another part of the light is blocked by the light-shielding area;

[0009] A driving assembly, used for driving the light source distributor to rotate, so that the light area passing through the light-transmitting area changes sequentially;

[0010] The detection component includes a light receiving unit, a photoelectric detection channel, and an optical sensor. The light receiving unit faces the light source and is arranged on the other side of the light source distributor relative to the light source. The light receiving unit is connected to the photoelectric detection channel corresponding to the light receiving unit. The light receiving unit receives the light and transmits it to the photoelectric detection channel. The photoelectric detection channel receives the light and feeds back light signal data. The light signal data fed back through the photoelectric detection channel is transmitted to the optical sensor for analysis to form electrical signal data.

[0011] Wherein, the light receiving units are arranged in a cluster, the number of light receiving units in each light receiving unit group is the same, and the deflection angles of adjacent light receiving unit groups relative to the rotation direction of the light source distributor are the same, the number of light receiving units in each light receiving unit group is the same as the number of the optical sensors, and the light receiving units at the same position in each light receiving unit group are connected to the same optical sensor through the photoelectric detection channels corresponding to each other;

[0012] After the driving component drives the light source distributor to rotate, each group of light receiving units receives the light passing through the light-transmitting area in turn.

[0013] Preferably, the light receiving unit is an optical fiber.

[0014] Preferably, the number of light receiving units in each group of light receiving units is at least.

[0015] Preferably, the light source distributor is hemispherical or disc-shaped.

[0016] Preferably, the light source distributor is a hemispherical cover body, the cover body is provided with a plurality of through grooves, the through grooves are configured to define the light-transmitting area, the parts of the cover body except the through grooves are the light-shielding area, the plurality of through grooves are arranged in sequence from top to bottom along the axis of the cover body, and are evenly distributed at equal angles around the axis on the spherical wall of the cover body, and the plurality of through grooves are arranged in a spiral shape on the cover body.

[0017] Preferably, the cover body is provided with four through grooves, and the total area of ​​the through grooves is one quarter of the area of ​​the outer circumferential surface of the cover body.

[0018] Preferably, a sleeve is sleeved on the cover body, the shortest distance between the inner wall of the sleeve and the outer circumferential surface of the cover body is always equal, the sleeve body is provided with mounting holes having the same number as the light receiving units, and the light receiving units are inserted into the mounting holes one by one.

[0019] Preferably, the driving assembly comprises a driving motor, a connecting frame is fixedly provided on the housing of the driving motor, the sleeve is fixedly provided on the connecting frame, and a motor shaft of the driving motor is fixedly connected to the cover body via a coupling.

[0020] Preferably, a signal collection flag is fixedly provided on the motor shaft and / or the coupling of the driving motor, and an optical coupler for sensing the position of the signal collection flag is provided on the connecting frame.

[0021] Preferably, a connecting plate is fixedly provided on the cover body, a light source is fixedly provided on the connecting plate, and a central axis of the light source is coaxial with a central axis of the cover body.

[0022] Preferably, the light source distributor comprises at least a disc-shaped cover body pivotally arranged on a frame, a fan-shaped through groove is formed on the cover body, and the area of ​​the through groove is one quarter of the surface area of ​​the cover body.

[0023] Preferably, a sleeve fixed on the frame is provided on the side of the cover away from the light source, the sleeve is parallel to the cover and is provided with mounting holes having the same number as the light receiving units, and the light receiving units are inserted into the mounting holes one by one.

[0024] Preferably, the driving assembly at least includes a driving motor fixedly mounted on the frame, a coupling is fixedly mounted on the motor shaft of the driving motor, a rotating shaft is fixedly mounted on the other end of the coupling, and the rotating shaft passes through the sleeve and is fixedly connected to the cover.

[0025] Preferably, a lamp holder is fixedly provided on the frame, the light source is fixedly provided on the lamp holder, and the central axis of the light source is coaxial with the central axis of the cover body.

[0026] The beneficial effects of the present invention are mainly reflected in:

[0027] The above design is ingenious. The light receiving units at the same position in each light receiving unit group are connected to the same optical sensor through their own corresponding photoelectric detection channels. The optical sensor can be selectively used for detection according to the photoelectric detection channel to be detected, thereby improving the utilization rate of the optical sensor and avoiding the waste of resources. In addition, the device is highly integrated, reducing the number of optical sensors, greatly reducing costs, improving the competitiveness of the device, and being beneficial to enterprise development.

[0028] The light source distributor is hemispherical, which can make the distance between the light source and all the light receiving units the same, ensuring that the light intensity received by the light receiving units is consistent, thereby reducing the error of the optical signal data transmitted to the photoelectric detection channel and improving accuracy.

[0029] The optical coupler and the acquisition signal flag cooperate with each other to monitor the position of the motor shaft or coupling of the drive motor in real time, ensure the accuracy of the position, and further improve the accuracy of the optical signal data.

[0030] The light source distributor is disc-shaped, and the assembly structure between the cover body and the sleeve body is simple and convenient, which is easy to disassemble, replace and repair, greatly improving work efficiency. At the same time, the assembly structure is stable and reliable and has a wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0032] Figure 1 : Schematic diagram of the multi-channel optical detection device of the present invention;

[0033] Figure 2 : A front view of a preferred embodiment of the present invention;

[0034] Figure 3 : A cross-sectional view of a preferred embodiment of the present invention;

[0035] Figure 4 : A three-dimensional diagram of the sleeve in a preferred embodiment of the present invention;

[0036] Figure 5 : A three-dimensional diagram of a cover body in a preferred embodiment of the present invention;

[0037] Figure 6 : A cross-sectional view of a cover body in a preferred embodiment of the present invention;

[0038] Figure 7 : A front view of a second embodiment of the present invention;

[0039] Figure 8 : A cross-sectional view of a second embodiment of the present invention;

[0040] Fig. 9 : A front view of the sleeve and cover body in the second embodiment of the present invention. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0043] The present invention discloses a multi-channel optical detection device, the principle diagram of which is as follows: Figure 1As shown, it includes a light source 2 for generating light, and a light source distributor 1 is provided on one side of the light source 2, and the light source distributor 1 has a light-transmitting area 101 and a light-shielding area 102, so that a part of the light passes through the light-transmitting area 101, and another part of the light is blocked by the light-shielding area 102. The positions of the light-transmitting area 101 and the light-shielding area 102 can be adjusted accordingly according to actual needs. Generally speaking, the light-shielding area is arranged around the light-transmitting area. The light source distributor 1 can be driven to rotate by a driving component 5 to cause the light area passing through the light-transmitting area 101 to change sequentially.

[0044] The multi-channel optical detection device of the present invention further includes a detection component, which is the same as the prior art in that: the detection component includes a light receiving unit 6, a photoelectric detection channel 3, and an optical sensor 4. The light receiving unit 6 faces the light source 2 and is arranged on the other side of the light source distributor 1 relative to the light source 2, and the light receiving unit 6 is connected to the photoelectric detection channel 3 corresponding to it one by one; the light receiving unit 6 is an optical fiber.

[0045] The light receiving unit 6 receives the light and transmits it to the photoelectric detection channel 3. The photoelectric detection channel 3 receives the light and feeds back light signal data (such as spectrum, light wave, etc.). The light signal data fed back through the photoelectric detection channel 3 is transmitted to the optical sensor 4 for analysis to form electrical signal data (that is, a signal that can be processed by a computer).

[0046] The present invention is characterized in that: the light receiving units 6 are arranged in a cluster, the number of light receiving units 6 in each light receiving unit group is the same, and the deflection angles of adjacent light receiving unit groups relative to the rotation direction of the light source distributor 1 are the same, and the number of light receiving units 6 in each light receiving unit group is the same as the number of optical sensors 4. In order to maximize the use efficiency of the optical sensor, the light receiving units 6 at the same position in each light receiving unit group are connected to the same optical sensor 4 after passing through the corresponding photoelectric detection channels 3. After the driving component 5 drives the light source distributor 1 to rotate, each light receiving unit group receives the light passing through the light-transmitting area 101 in turn, and performs subsequent detection steps.

[0047] In the present invention, the number of light receiving units 6 in each light receiving unit group is at least 1, and the actual number can be adjusted accordingly according to actual needs, all of which fall within the scope of protection of the present invention, and no further details are given here. The photoelectric detection channel 3 can be a fiber optic coupling device and an automatic coupling control method for a fiber optic coupling device as disclosed in Chinese patent CN117192707B, and of course, it can also be other detection devices, all of which fall within the scope of protection of the present invention.

[0048] The light receiving units 6 at the same position in each light receiving unit group of the present invention are connected to the same optical sensor 4 through the photoelectric detection channels 3 corresponding to each other, and the optical sensor can be selectively used for detection according to the photoelectric detection channel to be detected, thereby improving the utilization rate of the optical sensor and avoiding the waste of resources. In addition, the device is highly integrated, the number of optical sensors is reduced, the cost is greatly reduced, the competitiveness of the device is improved, and it is beneficial to the development of enterprises.

[0049] The following briefly describes the working process of the present invention, which includes the following steps:

[0050] S1. Mark the position of the light-transmitting area 101 on the light source distributor 1 as the initial position.

[0051] S2 , controlling the light source 2 to radiate light toward the light source distributor 1 , and part of the light passes through the light-transmitting area 101 and enters the light-receiving unit 6 .

[0052] S3, the light receiving unit 6 receives the light and transmits it to the photoelectric detection channel 3, the photoelectric detection channel 3 receives the light and feeds back light signal data, and the light signal data fed back by the photoelectric detection channel 3 is transmitted to the optical sensor 4 for analysis to form electrical signal data.

[0053] S4, the driving component 5 drives the light source distributor to rotate, so that the light area passing through the light-transmitting area 101 changes sequentially, and the photoelectric detection channel 3 also performs sequential detection.

[0054] The design concept of the present invention is specifically introduced below through two embodiments.

[0055] like Figures 2 to 6As shown, it is the first preferred embodiment of the present invention. The light source distributor 1 is a hemispherical cover 11, and a plurality of through grooves 12 are provided on the cover 11. The through grooves 12 are configured to define the light-transmitting area 101. The parts of the cover 11 except the through grooves 12 are all the light-shielding area 102. The plurality of through grooves 12 are arranged in sequence from top to bottom along the axis of the cover 11, and are evenly distributed on the spherical wall of the cover 11 at equal angles around its axis. The plurality of through grooves 12 are arranged in a spiral shape on the cover 11. In the above, four through grooves 12 are provided on the cover 11, and the through grooves 12 are distributed in a quadrant in a three-dimensional coordinate system. The total area of ​​the through grooves 12 is about one-fourth of the outer circumferential surface area of ​​the cover 11. In practice, the total area of ​​the through grooves 12 can be slightly larger or smaller than one-fourth of the outer circumferential surface area of ​​the cover 11, and no specific limitation is made thereto. The cover body 11 is sleeved with a sleeve 13, and the shortest distance between the inner wall of the sleeve 13 and the outer circumferential surface of the cover body 11 is always equal. The sleeve 13 is provided with mounting holes 14 having the same number as the light receiving units 6, and the light receiving units 6 are inserted into the mounting holes 14 one by one.

[0056] In this preferred embodiment, 96 mounting holes 14 are evenly distributed on the sleeve 13, a total of 24 mounting holes 14 are covered in the light-transmitting area 101, and 6 mounting holes 14 are covered in each through-groove 12. The above is the best embodiment of the present invention, taking the through-groove 12 covering a quarter of the mounting holes 14 as an example. Of course, other numbers of mounting holes 14 can also be arranged on the sleeve 13, and they are arranged according to other fractions, which all belong to the protection scope of the present invention and will not be described in detail here.

[0057] The driving assembly 5 includes a driving motor 51, a connecting frame 52 is fixedly provided on a housing 511 of the driving motor 51, the sleeve 13 is fixedly provided on the connecting frame 52, and the motor shaft of the driving motor 51 is fixedly connected to the cover body 11 via a coupling 53. In the above, each time the driving motor 51 drives the cover body 11 to flip, the angle is 90°, which can also be adjusted to 30°, 45°, etc., and can be adjusted according to actual needs.

[0058] The drive motor 51 is integrated with an encoder, and a signal collection flag 54 is fixedly provided on the motor shaft and / or coupling 53 of the drive motor 51. An optical coupler 55 for sensing the position of the signal collection flag 54 is provided on the connecting frame 52. The optical coupler 55, the signal collection flag 54 and the encoder cooperate with each other to monitor the position of the motor shaft or coupling 53 of the drive motor 51 in real time, thereby ensuring the accuracy of the position and improving the accuracy of the optical signal data.

[0059] The cover body 11 is fixedly provided with a connecting plate 10, and the connecting plate 10 is fixedly provided with a light source 2. The central axis of the light source 2 is coaxial with the central axis of the cover body 11. This design enables the distance from the center of the light source 2 to the head end of the light receiving unit 6 to be equal, and the intensity of the light received by the light receiving unit is almost uniform.

[0060] The working process of the preferred embodiment of the present invention is briefly described below: the position of the through groove 12 on the cover body 11 is marked as the initial position. At this time, the light source 2 is controlled to radiate light toward the light source distributor 1, and part of the light passes through the through groove 12 and is emitted into the light receiving unit 6.

[0061] The light receiving unit 6 receives the light and transmits it to the photoelectric detection channel 3. The photoelectric detection channel 3 receives the light and feeds back light signal data. The light signal data fed back through the photoelectric detection channel 3 is transmitted to the optical sensor 4 for analysis to form electrical signal data.

[0062] After the above detection is completed, the driving motor 51 is started to drive the cover body 11 to rotate 90 degrees to detect the lower group of light receiving units until the cover body 11 rotates to the initial position to complete the detection of all photoelectric detection channels 3.

[0063] like Figures 7 to 9 As shown, it is the second preferred embodiment of the present invention. The light source distributor is in the shape of a disk, and at least includes a disk-shaped cover body 11 pivotally mounted on a frame 19, and a fan-shaped through groove 12 is provided on the cover body 11, and the area of ​​the through groove 12 is about one-fourth of the surface area of ​​the cover body 11. In practice, the total area of ​​the through groove 12 can be slightly larger or smaller than one-fourth of the outer circumferential surface area of ​​the cover body 11, and no specific limitation is made thereto. A sleeve 13 fixedly mounted on the frame 19 is provided on the side of the cover body 11 away from the light source 2, and the sleeve 13 is parallel to the cover body 11, and is provided with the same number of mounting holes 14 as the light receiving units 6, and the light receiving units 6 are inserted into the mounting holes 14 one by one.

[0064] In this embodiment, the driving assembly 5 at least includes a driving motor 51 fixedly mounted on the frame 19, a coupling 53 is fixedly mounted on the motor shaft of the driving motor 51, a rotating shaft 59 is fixedly mounted on the other end of the coupling 53, and the rotating shaft 59 penetrates the sleeve 13 and is fixedly connected to the cover 11. A lamp holder 58 is fixedly mounted on the frame 19, and the light source 2 is fixedly mounted on the lamp holder 58, and the central axis of the light source 2 is coaxial with the central axis of the cover 11.

[0065] The working process of the second embodiment of the present invention is briefly described below: the position of the through slot 12 on the cover 11 is marked as the initial position. At this time, the light source 2 is controlled to radiate light toward the light source distributor 1, and part of the light passes through the through slot 12 and enters the light receiving unit 6. The light receiving unit 6 receives the light and transmits it to the photoelectric detection channel 3. The photoelectric detection channel 3 receives the light and feeds back to generate light signal data. The light signal data fed back through the photoelectric detection channel 3 is transmitted to the optical sensor 4 for analysis to form electrical signal data.

[0066] After the above detection is completed, the drive motor 51 is started, and drives the cover body 11 to rotate 90° through the coupling 53 and the shaft to detect the lower group of light receiving units until the cover body 11 rotates to the initial position, completing the detection of all photoelectric detection channels 3.

[0067] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0068] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-channel optical detection device, characterized in that: include: A light source (2) generates light; A light source distributor (1) having a light-transmitting area (101) and a light-shielding area (102), such that a portion of the light passes through the light-transmitting area (101) and another portion of the light is blocked by the light-shielding area (102); A driving assembly (5) for driving the light source distributor (1) to rotate, so that the light area passing through the light-transmitting area (101) changes sequentially; The detection component comprises a light receiving unit (6), a photoelectric detection channel (3), and an optical sensor (4); the light receiving unit (6) faces the light source (2) and is arranged on the other side of the light source distributor (1) relative to the light source (2); the light receiving unit (6) is connected to the photoelectric detection channel (3) corresponding thereto; the light receiving unit (6) receives the light and transmits it to the photoelectric detection channel (3); the photoelectric detection channel (3) receives the light and feeds back light signal data; the light signal data fed back by the photoelectric detection channel (3) is transmitted to the optical sensor (4) for analysis to form electrical signal data; The light receiving units (6) are arranged in a cluster, the number of light receiving units (6) in each light receiving unit group is the same, and the deflection angles of adjacent light receiving unit groups relative to the rotation direction of the light source distributor (1) are the same, the number of light receiving units (6) in each light receiving unit group is the same as the number of the optical sensors (4), and the light receiving units (6) at the same position in each light receiving unit group are connected to the same optical sensor (4) through the corresponding photoelectric detection channels (3) respectively; After the driving component (5) drives the light source distributor (1) to rotate, each group of light receiving units receives the light passing through the light-transmitting area (101) in turn; The light source distributor (1) is hemispherical or disc-shaped; When the light source distributor (1) is a hemispherical cover (11), a plurality of through grooves (12) are provided on the cover (11), the through grooves (12) are configured to define the light-transmitting area (101), and the portion of the cover (11) other than the through grooves (12) is the light-shielding area (102), the plurality of through grooves (12) are arranged in sequence from top to bottom along the axis of the cover (11), and are evenly distributed at equal angles around the axis on the spherical wall of the cover (11), and the plurality of through grooves (12) are arranged in a spiral shape on the cover (11); When the light source distributor (1) comprises a disc-shaped cover body (11) pivotally arranged on a frame (19), a fan-shaped through-groove (12) is provided on the cover body (11), and the area of ​​the through-groove (12) is one quarter of the surface area of ​​the cover body (11).

2. The multi-channel optical detection device according to claim 1, characterized in that: The light receiving unit (6) is an optical fiber.

3. The multi-channel optical detection device according to claim 1, characterized in that: The number of light receiving units (6) in each group of light receiving units is at least 1.

4. The multi-channel optical detection device according to claim 1, characterized in that: The cover body (11) is provided with four through grooves (12), and the total area of ​​the through grooves (12) is one quarter of the area of ​​the outer circumferential surface of the cover body (11).

5. The multi-channel optical detection device according to claim 4, characterized in that: The cover body (11) is sleeved with a sleeve body (13), the shortest distance between the inner wall of the sleeve body (13) and the outer circumferential surface of the cover body (11) is always equal, the sleeve body (13) is provided with mounting holes (14) having the same number as the light receiving units (6), and the light receiving units (6) are inserted into the mounting holes (14) in a one-to-one correspondence.

6. The multi-channel optical detection device according to claim 5, characterized in that: The drive assembly (5) comprises a drive motor (51), a connecting frame (52) is fixedly provided on a housing (511) of the drive motor (51), the sleeve (13) is fixedly provided on the connecting frame (52), and a motor shaft of the drive motor (51) is fixedly connected to the cover body (11) via a coupling (53).

7. The multi-channel optical detection device according to claim 6, characterized in that: A collection signal flag (54) is also fixedly mounted on the motor shaft and / or the coupling (53) of the driving motor (51), and an optical coupler (55) for sensing the position of the collection signal flag (54) is mounted on the connecting frame (52).

8. The multi-channel optical detection device according to claim 7, characterized in that: A connecting plate (10) is fixedly provided on the cover body (11), a light source (2) is fixedly provided on the connecting plate (10), and a central axis of the light source (2) is coaxial with a central axis of the cover body (11).

9. The multi-channel optical detection device according to claim 1, characterized in that: A sleeve (13) fixedly mounted on the frame (19) is provided on a side of the cover (11) away from the light source (2); the sleeve (13) is parallel to the cover (11) and is provided with mounting holes (14) having the same number as the light receiving units (6); the light receiving units (6) are inserted into the mounting holes (14) in a one-to-one correspondence.

10. The multi-channel optical detection device according to claim 9, characterized in that: The driving assembly (5) comprises a driving motor (51) fixedly mounted on the frame (19); a coupling (53) is fixedly mounted on the motor shaft of the driving motor (51); a rotating shaft (59) is fixedly mounted on the other end of the coupling (53); and the rotating shaft (59) passes through the sleeve (13) and is fixedly connected to the cover body (11).

11. The multi-channel optical detection device according to claim 10, characterized in that: A lamp holder (58) is fixedly disposed on the frame (19), the light source (2) is fixedly disposed on the lamp holder (58), and the central axis of the light source (2) is coaxial with the central axis of the cover body (11).

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