PMT debugging device and method

Abstract

The invention relates to an optical commissioning device, in particular a PMT commissioning device and method, the commissioning device comprising a light source plate on which a light source is provided; the bracket is provided with a first channel for accommodating the PMT and a second channel for accommodating the moving part; an optical channel is arranged in the side part, close to the PMT, of the bracket; the moving part is arranged in the second channel, and the elastic part is used for pushing the moving part, so that the moving part extrudes the PMT arranged in the first channel; the first shading piece is arranged between the light source plate and the support, and test light emitted by the light source penetrates through the first shading piece and the optical channel and is received by the PMT arranged in the first channel; the support, the light source plate and the moving part are arranged in the first light shield. The device has the advantages of being simple in structure, portable and the like, and is applied to PMT manufacturing.

Description

Technical Field

[0001] The invention relates to PMT manufacturing, and in particular to a PMT debugging device and method. Background Art

[0002] PMT is a vacuum electronic device that converts weak light signals into electrical signals. It is based on the theory of external photoelectric effect, secondary electron emission and electron optics, and combines the characteristics of high gain, low noise, high frequency response and large signal receiving area. It is a photosensitive vacuum electronic device with extremely high sensitivity and ultra-fast time response.

[0003] PMT is one of the key components of chemiluminescent immunoassay instrument. Its accuracy affects the detection performance of chemiluminescent immunoassay instrument. Therefore, before PMT is assembled into chemiluminescent immunoassay instrument, it is necessary to carry out accurate photometric calibration.

[0004] The existing PMT debugging equipment controls the light source component to emit a specified light intensity, and the PMT directly or indirectly measures the detection light source to determine whether the light intensity measured by the PMT is consistent with the light intensity of the set light source, and then determines whether the accuracy of the PMT is accurate, and then debugs the PMT based on the results. However, the existing PMT debugging equipment often has shortcomings such as large size, complex structure and high cost, which makes it inconvenient to carry and cannot adapt to the use conditions of multiple times and multiple places. Summary of the invention

[0005] In order to solve the deficiencies in the above-mentioned prior art solutions, the present invention provides a PMT debugging device.

[0006] The objective of the present invention is achieved through the following technical solutions: A PMT debugging device, comprising a light source board, wherein a light source is arranged on the light source board; the debugging device further comprises: A bracket having a first channel for accommodating a PMT and a second channel for accommodating a moving member; an optical channel is arranged inside the side of the bracket facing the PMT; A moving member and an elastic member, wherein the moving member is arranged in the second channel, and the elastic member is used to push the moving member so that the moving member squeezes the PMT arranged in the first channel; a first light shielding member, wherein the first light shielding member is disposed between the light source plate and the bracket, and the test light emitted by the light source passes through the first light shielding member and the optical channel and is received by the PMT disposed in the first channel; A first light shield, wherein the bracket, the light source panel and the moving part are arranged in the first light shield.

[0007] Another object of the present invention is to provide a working method of the above-mentioned PMT debugging device, and the object of the invention is achieved by the following technical solutions: The working method of the PMT debugging device according to the present invention comprises the following steps: (A1) Opening the first light shield, the light source on the light source board adopts a standard light source, pushing the moving member to move in the second channel, and the elastic member is compressed; Installing a standard PMT in the first channel, loosening the moving part, and squeezing the standard PMT by the moving part; Close the first light shield and measure the reference curve C1 using the standard PMT; (A2) opening the first light shield and replacing the light source on the light source board with a test light source; Close the first light shield, and adjust the control parameters of the test light source so that the deviation between the curve C2 measured by the standard PMT and the reference curve C1 is less than a set value; (A3) opening the first light shield, pushing the movable member to move in the second channel, and the elastic member is compressed; Installing the PMT to be tested in the first channel, loosening the moving part, and squeezing the PMT to be tested by the moving part; The first light shield is closed, and the control parameters of the PMT to be tested are adjusted so that the deviation between the curve C3 and the curve C2 measured by the PMT to be tested is less than the set value.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The structure is simple and the volume is small; the components such as the bracket, the moving part and the elastic part have a simple structure and a small volume, which improves the portability of the debugging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. In the drawings: Figure 1 is a simplified structural diagram of a PMT debugging device according to an embodiment of the present invention; Figure 2 4 is a cross-sectional structural diagram of a PMT debugging device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0010] Figure 1-Figure 2The following description describes the optional embodiments of the present invention to teach those skilled in the art how to implement and reproduce the present invention. In order to teach the technical solution of the present invention, some conventional aspects have been simplified or omitted. It should be understood by those skilled in the art that variations or substitutions derived from these embodiments will be within the scope of the present invention. It should be understood by those skilled in the art that the following features can be combined in various ways to form multiple variations of the present invention. Thus, the present invention is not limited to the following optional embodiments, but is only limited by the claims and their equivalents.

[0011] Example 1.

[0012] The PMT debugging device of the embodiment of the present invention is as follows: Figure 1-Figure 2 Shown, incl.

[0013] The light source is disposed on the light source board 61 .

[0014] The support 11 has a first channel 111 for accommodating the PMT 31 and a second channel 112 for accommodating the moving member 21 ; an optical channel is provided inside the side of the support 11 facing the PMT 31 .

[0015] The moving member 21 is disposed in the second channel 112 , and the elastic member 22 is used to push the moving member 21 so that the moving member 21 squeezes the PMT 31 disposed in the first channel 111 .

[0016] The first light shielding member 51 is disposed between the light source plate 61 and the bracket 11 . The test light emitted by the light source passes through the first light shielding member 51 and the optical channel and is received by the PMT 31 disposed in the first channel 111 .

[0017] The bracket 11 , the light source panel 61 and the moving member 21 are disposed in the first light shielding cover 71 .

[0018] In order to prevent external light from affecting the debugging, the debugging device further includes: The second light shield 72 wraps the light source panel 61 and is fixed on the bracket 11 .

[0019] In order to facilitate electrical connection, further, the upper side of the second light shield 72 has a through hole 721 , and the interface of the power board 61 is arranged at the through hole 721 .

[0020] In order to improve the debugging accuracy, the debugging device further includes: The cylindrical component 41 is arranged in the optical channel, the first shading member 51 is between the light source plate 61 and the cylindrical component 41, the cylindrical component 41 is open at one end and closed at the other end, and a through hole is provided at the center of the closed end, and the test light passes through the inside of the cylindrical component 41 and the through hole in sequence.

[0021] In order to improve the debugging accuracy, the debugging device further includes: The second light shielding member 52 is disposed between the bracket 11 and the PMT 31 and allows the test light to pass through; The light-scattering column 43 is disposed in the optical channel, and the test light passes through the first light-shielding member 51 , the cylindrical member 41 , the light-scattering column 43 , and the second light-shielding member 52 in sequence.

[0022] In order to make the moving member 21 stably translate along the second channel 112, further, the moving member 21 includes: The vertical portion 212 is connected to the upper side of the horizontal portion 211 and is disposed in the second channel 112 . The horizontal portion 211 is disposed at the lower side of the second channel 112 . The extending direction of the horizontal portion 211 is perpendicular to the central axis of the optical channel.

[0023] In order to make the moving member 21 translate stably along the second channel 112 , the bracket 11 is further fixed on the bottom plate 91 , and the bottom side of the bracket 11 on both sides of the second channel 112 has a notch 113 , the height of the notch 113 is equal to the height of the horizontal portion 211 , and the horizontal portion 211 passes through the two notches 113 .

[0024] In order to make the moving member 21 stably translate along the second channel 112, further, the vertical portion 212 includes: A gap is defined between the first vertical portion and the second vertical portion which are arranged in parallel, allowing the connection terminal of the PMT 31 to be inserted.

[0025] In order to facilitate the placement and removal of the PMT 31 , further, the upper ends of the brackets 11 on both sides of the first channel 211 are provided with fan-shaped notches 114 .

[0026] The working method of the PMT debugging device of this embodiment includes the following steps: (A1) The first light shield 71 is opened, the light source on the light source board 61 is a standard light source, the moving member 21 is pushed to move in the second channel 112, and the elastic member 22 is compressed; Install the standard PMT 31 in the first channel 111, loosen the moving member 21, and the moving member 21 squeezes the standard PMT 31; Close the first light shield 71 and measure the reference curve C1 using the standard PM31T; (A2) opening the first light shield 71 and replacing the light source on the light source board 61 with a test light source; Close the first light shield 71, and adjust the control parameters of the test light source so that the deviation between the curve C2 measured by the standard PMT 31 and the reference curve C1 is less than a set value; (A3) Opening the first light shield 71, pushing the moving member 21 to move in the second channel 112, and the elastic member 22 is compressed; The PMT 31 to be tested is installed in the first channel 111, and the moving member 21 is released, so that the moving member 21 squeezes the PMT 31 to be tested; The first light shield 71 is closed, and the control parameters of the PMT 31 to be tested are adjusted so that the deviation between the curve C3 and the curve C2 measured by the PMT 31 to be tested is smaller than the set value.

[0027] Example 2.

[0028] An application example of the PMT debugging device and method according to embodiment 1 of the present invention.

[0029] In this application example, Figure 1-Figure 2 As shown, the first light shield 71 includes a housing and an upper cover to prevent external light from entering the housing. A bottom plate 91 is arranged on the bottom wall of the housing.

[0030] The light source is arranged on the light source board 61, and the second light shield 72 wraps the light source board 61 and is fixed on the bracket 11. The upper side of the second light shield 72 has a through hole 721, and the interface of the power board 61 is arranged at the through hole 721.

[0031] The bracket 11 is fixed on the bottom plate 91 and has a through optical channel, a first channel 111 and a second channel 112. The upper end of the bracket 11 on both sides of the first channel 11 has a fan-shaped notch 114, and the lower end of the bracket 11 on both sides of the second channel 112 has a notch 113.

[0032] The optical channel is provided with a cylindrical component 41, a sponge gasket 42 and a diffuser column 43 in sequence. The cylindrical component 41 is open at one end and closed at the other end, and a through hole is provided at the center of the closed end, and the test light passes through the inside of the cylindrical component 41 and the through hole in sequence. The first light shielding member 51 and the second light shielding member 52 are rubber pads with a through hole in the center. The first light shielding member 51 is provided between the light source plate 61 and the bracket 11, and the second light shielding member 52 is provided between the bracket 11 and the PMT 31.

[0033] The moving member 21 comprises a horizontal portion 211 and two vertical portions 212, the two vertical portions 212 being arranged in the second channel 112, and having a width equal to that of the second channel 112. The horizontal portion 211 passes through the notch 113, and the height of the horizontal portion 211 is the same as that of the notch 113. Based on the design of width and height, the moving member 21 can only be translated along the second channel 112, and the translation direction is parallel to the central axis of the optical channel. The elastic member 22 adopts a spring and is arranged between the moving member 21 and the bracket 11.

[0034] The PMT 31 is disposed in the first channel 111 , and the moving member 21 presses the PMT 31 under the push of the elastic member 22 . The connection terminal of the PMT 31 is inserted into the gap between the two vertical portions 212 .

[0035] The working method of the PMT debugging device of this embodiment includes the following steps: (A1) The first light shield 71 is opened, the light source on the light source board 61 is a standard light source, and the moving member 21 is pushed by hand to translate forward in the second channel 112 , and the elastic member 22 is compressed.

[0036] The standard PMT 31 is installed in the first channel 111 , and the moving member 21 is released. Under the elastic force of the elastic member 22 , the moving member 21 translates in the opposite direction and presses the standard PMT 31 , so that the standard PMT 31 is squeezed between the bracket 11 and the moving member 21 .

[0037] When the first light shield 71 is closed, the test light emitted by the standard light source passes through the first light shielding member 51, the cylindrical member 41, the sponge gasket 42, the light guide column 43 and the second light shielding member 52 in sequence, and is received by the standard PMT 31, which outputs an electrical signal, thereby measuring the reference curve C1.

[0038] (A2) Open the first light shield 71 and the second light shield 72 , replace the light source on the light source board 61 with a test light source; and reinstall the second light shield 72 .

[0039] When the first light shield 71 is closed, the test light emitted by the test light source passes through the first light shielding member 51 , the cylindrical member 41 , the sponge gasket 42 , the light guide column 43 and the second light shielding member 52 in sequence and is received by the standard PMT 31 .

[0040] The control parameters of the test light source are adjusted so that the deviation between the curve C2 measured by the standard PMT 31 and the reference curve C1 is smaller than a set value, and the smaller the set value, the better.

[0041] (A3) Open the first light shield 71 and manually push the moving member 21 to translate forward in the second channel 112 , so that the elastic member 22 is compressed.

[0042] Take out the standard PMT 31, install the PMT 31 to be tested in the first channel 111, release the moving member 21, and under the elastic force of the elastic member 22, the moving member 21 translates in the opposite direction and presses the standard PMT 31, so that the PMT 31 to be tested is squeezed between the bracket 11 and the moving member 21.

[0043] When the first light shield 71 is closed, the test light emitted by the test light source passes through the first light shielding member 51, the cylindrical member 41, the sponge gasket 42, the light guide column 43 and the second light shielding member 52 in sequence, and is received by the PMT 31 to be tested, and the PMT 31 to be tested outputs an electrical signal.

[0044] Adjust the control parameters of the PMT 31 to be tested so that the deviation between the curve C3 and the curve C2 measured by the PMT 31 to be tested is smaller than the set value. The smaller the set value, the better.

Claims

1. A PMT debugging device, comprising a light source board, on which a light source is arranged; characterized in that: The debugging device also includes: A bracket having a first channel for accommodating a PMT and a second channel for accommodating a moving member; an optical channel is arranged inside the side of the bracket facing the PMT; A moving member and an elastic member, wherein the moving member is arranged in the second channel, and the elastic member is used to push the moving member so that the moving member squeezes the PMT arranged in the first channel; a first light shielding member, wherein the first light shielding member is disposed between the light source plate and the bracket, and the test light emitted by the light source passes through the first light shielding member and the optical channel and is received by the PMT disposed in the first channel; A first light shield, wherein the bracket, the light source panel and the moving part are arranged in the first light shield.

2. The PMT debugging device according to claim 1, characterized in that: The debugging device also includes: A second light shield wraps the light source panel and is fixed on the bracket.

3. The PMT debugging device according to claim 2, characterized in that: The upper side of the second light shield has a through hole, and the interface of the power board is arranged at the through hole.

4. The PMT debugging device according to claim 1, characterized in that: The debugging device also includes: A cylindrical component is arranged in the optical channel, the first shading member is between the light source plate and the cylindrical component, one end of the cylindrical component is open and the other end is closed, a through hole is provided at the center of the closed end, and the test light passes through the inside of the cylindrical component and the through hole in sequence.

5. The PMT debugging device according to claim 4, characterized in that: The debugging device also includes: a second light shielding member, which is disposed between the bracket and the PMT and allows the test light to pass through; A light-scattering column is provided in the optical channel, and the test light passes through the first light-shielding member, the cylindrical member, the light-scattering column and the second light-shielding member in sequence.

6. The PMT debugging device according to claim 1, characterized in that: The moving part comprises: A horizontal portion and a vertical portion, wherein the vertical portion is connected to the upper side of the horizontal portion and is arranged in the second channel, and the horizontal portion is arranged at the lower side of the second channel, and the extension direction of the horizontal portion is perpendicular to the central axis of the optical channel.

7. The PMT debugging device according to claim 6, characterized in that: The bracket is fixed on the bottom plate, and the bottom sides of the brackets on both sides of the second channel are provided with notches, the height of the notches is equal to the height of the horizontal part, and the horizontal part passes through the two notches.

8. The PMT debugging device according to claim 7, characterized in that: The vertical portion comprises: The first vertical portion and the second vertical portion have a gap therebetween for allowing the terminal of the PMT to be inserted.

9. The PMT debugging device according to claim 1, characterized in that: The upper ends of the brackets on both sides of the first channel are provided with fan-shaped notches.

10. The working method of the PMT debugging device according to any one of claims 1 to 9, comprising the following steps: (A1) Opening the first light shield, the light source on the light source board adopts a standard light source, pushing the moving member to move in the second channel, and the elastic member is compressed; Installing a standard PMT in the first channel, loosening the moving part, and squeezing the standard PMT by the moving part; Close the first light shield and measure the reference curve C1 using the standard PMT; (A2) opening the first light shield and replacing the light source on the light source board with a test light source; Close the first light shield, and adjust the control parameters of the test light source so that the deviation between the curve C2 measured by the standard PMT and the reference curve C1 is less than a set value; (A3) opening the first light shield, pushing the movable member to move in the second channel, and the elastic member is compressed; Installing the PMT to be tested in the first channel, loosening the moving part, and squeezing the PMT to be tested by the moving part; The first light shield is closed, and the control parameters of the PMT to be tested are adjusted so that the deviation between the curve C3 and the curve C2 measured by the PMT to be tested is less than the set value.

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