A method for testing detection sensitivity of ultraviolet receiving device

Abstract

The present invention discloses a method for testing the detection sensitivity of an ultraviolet receiving device, belonging to the field of sensitivity testing methods, and comprising the following steps: Step 1: within the operating band of the receiving device, based on an investigation of actual conditions, formulating an atmospheric transmittance standard that meets the conditions; Step 2: based on the assumed working environment conditions when the receiving device is designed, formulating a radiation intensity equivalent standard that meets the conditions; Step 3: designing an ultraviolet light source to simulate the characteristics of an ultraviolet threat source reaching the receiving device from the transmitting end; Step 4: testing the ultraviolet detection sensitivity of the receiving device to determine whether it meets the design indicators; In step 1, formulating the atmospheric transmittance standard specifically comprises: S101: using a spectrophotometer to test the filters of multiple qualified receiving devices. The present invention can determine whether the ultraviolet detection sensitivity of the receiving device meets the design indicators, providing a reference basis for determining whether the ultraviolet detection sensitivity of the receiving device is qualified.

Description

Technical Field

[0001] The invention relates to the field of sensitivity testing methods, in particular to a method for testing the detection sensitivity of an ultraviolet receiving device. Background Art

[0002] Ultraviolet detection primarily involves imaging the UV signal from a UV threat source through a receiver. After image processing, the system issues an alert to the target. Ultraviolet detection sensitivity is defined as the minimum radiation intensity E required for a UV threat source to be successfully received by the receiver after transmitting light of intensity E through the atmosphere over a distance L.

[0003] The current test method for ultraviolet detection capability is to use an ultraviolet simulation source to irradiate the receiving device and observe whether an alarm signal is generated. This method can only determine whether the receiving device has the alarm capability, but cannot determine whether its detection sensitivity meets the design indicators. Therefore, it is impossible to determine whether the product is qualified.

[0004] Therefore, those skilled in the art provide a method for testing the detection sensitivity of an ultraviolet receiving device to solve the problems raised in the above background technology. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for testing the detection sensitivity of an ultraviolet receiving device, which can determine whether the ultraviolet detection sensitivity of the receiving device meets the design indicators and provide a reference basis for whether the ultraviolet detection sensitivity of the receiving device is qualified, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for testing the detection sensitivity of an ultraviolet receiving device comprises the following steps:

[0008] Step 1: Based on the actual situation, formulate an atmospheric transmittance standard that meets the conditions within the operating band of the receiving device;

[0009] Step 2: Based on the assumed working environment conditions when designing the receiving device, formulate a radiation intensity equivalent standard that meets the conditions;

[0010] Step 3: Design a UV light source to simulate the characteristics of the UV threat source from the transmitter to the receiver;

[0011] Step 4: Test the UV detection sensitivity of the receiving device to determine whether it meets the design specifications.

[0012] As a further solution of the present invention: in step 1, the atmospheric transmittance standard is formulated as follows:

[0013] S101: Use a spectrophotometer to test the filters of multiple qualified receiving devices, and record the center wavelengths and passband ranges of 20 groups of filters respectively;

[0014] S102: Calculate the test data and take the average of the center wavelengths of all filters as the actual center wavelength λ;

[0015] S103: Under the conditions of meteorological atmospheric visibility of 23 km, horizontal transmission distance equal to the ultraviolet detection sensitivity design index L of the receiving device, and altitude equal to the altitude parameter corresponding to the design index L, determine the atmospheric attenuation coefficient α(λ) for ultraviolet light having a wavelength of λ;

[0016] S104: Determine the atmospheric transmittance τ(α) based on the atmospheric attenuation coefficient.

[0017] As a further solution of the present invention: in step 2, the radiation intensity equivalent standard is formulated as follows:

[0018] S201: Using a photon counting method, measure the maximum ultraviolet radiation intensity of commonly used ultraviolet threat sources in the working band of the receiving device, and take the average value as I;

[0019] S202: Based on the atmospheric transmittance τ(α) and the average radiation intensity of the ultraviolet threat source I, L, the ultraviolet detection sensitivity design index of the receiving device is taken, and the equivalent radiation intensity E of the ultraviolet radiation source reaching the receiving device end when the transmission distance L is calculated using the formula.

[0020] As a further solution of the present invention: in step 3, the characteristics of the ultraviolet threat source are simulated as follows:

[0021] S301: Design a collimator to simulate a target at infinity. The spectrum of the collimator is the working range of the receiving device.

[0022] S302: Adjust the radiation intensity of the light source emitted by the collimator. The light source is designed to include three different radiation intensity levels, namely, level 1 greater than E, level 2 equal to E, and level 3 less than E.

[0023] S303: Design the experimental platform as an optical platform, which uses vibration isolation materials to avoid optical path jitter caused by vibration and other factors;

[0024] S304: Make tooling for fixing the receiving device and the UV radiometer;

[0025] S305: Fix the collimator on the optical platform and the UV radiometer on the tooling. Use the UV radiometer to measure the radiation intensity of the collimator at three levels to determine whether it satisfies the conditions of being greater than E, equal to E, or less than E.

[0026] As a further solution of the present invention: the collimator includes two parallel collimator fixing brackets, and the bottom end surface of the collimator fixing bracket is provided with four collimator fixing screw holes distributed in a rectangular shape, the top ends of the two collimator fixing brackets are commonly fixedly connected to a collimator protective shell, and an ultraviolet light source is fixedly connected to one side of the interior of the collimator protective shell, one side of the ultraviolet light source is fixedly connected to frosted glass, and one side of the frosted glass is fixedly connected to a graticule, one side of the graticule is fixedly connected to a reflector, and one side of the reflector is fixedly connected to an objective lens, one side of the objective lens is fixedly connected to a light outlet, the ultraviolet light source emits ultraviolet light, and the ultraviolet light passes through the frosted glass, the graticule, the reflector and the objective lens and is emitted from the light outlet.

[0027] As a further solution of the present invention: the tooling for fixing the ultraviolet radiometer includes a bracket, and a radiometer fixing screw hole is opened in the middle of the top end surface of the bracket, and bracket mounting screw holes are symmetrically opened on both sides of the bottom end surface of the bracket.

[0028] As a further solution of the present invention: the tooling for fixing the receiving device includes a receiving device fixing bracket, and the bottom end surface of the receiving device fixing bracket is provided with four bracket fixing screw holes distributed in a rectangular shape, a receiving device vertical fixing screw hole is provided in the middle position of the top end surface of the receiving device fixing bracket, and a receiving device placement hole is provided on one side surface of the receiving device fixing bracket, and a receiving device horizontal fixing screw hole is provided on the other side surface of the receiving device fixing bracket.

[0029] As a further solution of the present invention: in step 4, the specific process of testing the ultraviolet detection sensitivity of the receiving device is as follows:

[0030] S401: Use the collimator to test the receiving device in the first gear to determine whether the receiving device has the alarm capability;

[0031] S402: Use the collimator in the second gear to test the receiving device to determine whether the sensitivity of the receiving device meets the design specifications;

[0032] S403: Use the collimator to test the receiving device at three levels to determine whether the sensitivity of the receiving device is better than the design index.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention is applied to the test of ultraviolet detection sensitivity, and provides a radiation intensity equivalence method, a set of simulated light source equipment simulating parallel light, a set of corresponding test tooling, and a test method for ultraviolet detection sensitivity. According to the test method of the patent of the present invention, it is possible to determine whether the ultraviolet detection sensitivity of the receiving device meets the design indicators, and provide a reference basis for whether the ultraviolet detection sensitivity of the receiving device is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a flow chart of a method for testing the detection sensitivity of an ultraviolet receiving device;

[0036] Figure 2 A schematic diagram of a collimator used in a method for testing the detection sensitivity of an ultraviolet receiving device;

[0037] Figure 3 A schematic diagram of a fixture for fixing an ultraviolet radiometer in a method for testing the detection sensitivity of an ultraviolet receiving device;

[0038] Figure 4 The figure is a schematic diagram of a fixture for fixing a receiving device in a method for testing the detection sensitivity of an ultraviolet receiving device.

[0039] In the figure: 101, collimator fixing screw hole; 102, collimator fixing bracket; 103, ultraviolet light source; 104, frosted glass; 105, reticle; 106, reflector; 107, collimator protective housing; 108, objective lens; 109, ultraviolet light; 1010, light outlet; 201, radiometer fixing screw hole; 202, bracket; 203, bracket mounting screw hole; 301, receiving device vertical fixing screw hole; 302, receiving device placement hole; 303, receiving device horizontal fixing screw hole; 304, receiving device fixing bracket; 305, bracket fixing screw hole. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] As mentioned in the background technology of this application, research has found that the existing test method for ultraviolet detection capability is: use an ultraviolet simulation source to irradiate the receiving device and observe whether an alarm signal is generated. This method can only determine whether the receiving device has an alarm capability, but cannot determine whether its detection sensitivity can meet the design indicators. Therefore, it is impossible to determine whether the product is qualified, and there are certain defects.

[0042] In order to solve the above defects, the present application discloses a method for testing the detection sensitivity of an ultraviolet receiving device, which can determine whether the ultraviolet detection sensitivity of the receiving device meets the design indicators and provide a reference basis for whether the ultraviolet detection sensitivity of the receiving device is qualified.

[0043] The following will describe in detail how the solution of this application solves the above technical problems with reference to the accompanying drawings.

[0044] See also Figure 1 In an embodiment of the present invention, a method for testing the detection sensitivity of an ultraviolet receiving device includes the following steps: Step 1: within the operating band of the receiving device, based on the exploration of actual conditions, formulate an atmospheric transmittance standard that meets the conditions; Step 2: based on the assumed working environment conditions when the receiving device is designed, formulate a radiation intensity equivalent standard that meets the conditions (i.e., simulate the actual conditions to the laboratory); Step 3: design an ultraviolet light source to simulate the characteristics of the ultraviolet threat source from the transmitting end to the receiving device end; Step 4: test the ultraviolet detection sensitivity of the receiving device to determine whether it meets the design indicators. This application can determine whether the ultraviolet detection sensitivity of the receiving device meets the design indicators, providing a reference basis for whether the ultraviolet detection sensitivity of the receiving device is qualified.

[0045] In this embodiment, in step 1, the atmospheric transmittance standard is formulated as follows: S101: using a spectrophotometer to test the filters of multiple qualified receiving devices, and recording the center wavelengths and passband ranges of 20 groups of filters respectively. More specifically, multiple measurements are performed on the filters of more than three qualified receiving devices, and the passband ranges and center wavelengths of the filters are measured using a full ultraviolet band spectrophotometer, and 20 groups of data are recorded; S102: calculating the test data, taking the average value of the center wavelengths of all filters as the actual center wavelength λ, and more specifically, calculating the passband range and center wavelength of the 20 groups of data. Calculate the average value, and the passband range is λ1-λ2 (actually, the lower and upper limits of the 20 passband ranges are averaged to obtain the lower limit λ1 and upper limit λ2), with a central wavelength of λ (i.e., the central values ​​of the 20 passband ranges are averaged). S103: Under the meteorological atmospheric visibility of 23 km, the horizontal transmission distance equal to the receiver's ultraviolet detection sensitivity design index L, and the altitude parameter corresponding to the design index L, determine the atmospheric attenuation coefficient α(λ) for ultraviolet light with a wavelength of λ. S104: Based on the atmospheric attenuation coefficient, determine the atmospheric transmittance τ(α). The atmospheric attenuation coefficient is a quantitative indicator that describes the atmospheric attenuation effect on electromagnetic wave propagation. It represents the proportion of energy lost during electromagnetic wave propagation. The magnitude of the atmospheric attenuation coefficient depends on many factors, including the frequency of the electromagnetic wave, the propagation path, meteorological conditions, and atmospheric composition. Atmospheric transmittance is the ratio of the electromagnetic radiation flux after atmospheric attenuation to the incident electromagnetic radiation flux when the electromagnetic wave propagates through the atmosphere. It is an important factor affecting the transmission of ultraviolet radiation and is significantly affected by meteorological conditions. The relationship between the atmospheric attenuation coefficient and the atmospheric transmittance can be expressed by the following formula:

[0046] t(x)=exp(-μ·d(x))t(x)=\exp(-\mu\cdotd(x))t(x)=exp(-μ·d(x))

[0047] Here, t(x) represents the atmospheric transmittance at position x, μ represents the extinction coefficient (also known as the atmospheric attenuation coefficient), and d(x) represents the optical path length of light. This formula shows that, given a certain propagation distance, the greater the attenuation coefficient, the lower the atmospheric transmittance.

[0048] In this embodiment, in step 2, the radiation intensity equivalent standard is specifically formulated as follows: S201: Using the photon counting method, the maximum ultraviolet radiation intensity of commonly used ultraviolet threat sources is measured in the working band of the receiving device, and the average value is taken as I. More specifically, for commonly used ultraviolet threat sources, the maximum radiation intensity of the threat source in the λ1-λ2 band is measured, and the average value is recorded as I; S202: Based on the atmospheric transmittance τ(α) and the average radiation intensity I,L of the ultraviolet threat source, the ultraviolet detection sensitivity design index of the receiving device is taken, and the equivalent radiation intensity E of the ultraviolet radiation source reaching the receiving device end is calculated using the formula when the transmission distance L of the ultraviolet radiation source is L. It should be noted that the equivalent radiation intensity E of the UV radiation source reaching the receiver when the transmission distance is L is calculated based on the atmospheric transmittance τ(α), the average radiation intensity I of the UV threat source, and the UV detection sensitivity design index L of the receiver (here L represents a parameter related to sensitivity, but is not usually used directly as a sensitivity index in standard formulas. Instead, other parameters such as the detector's quantum efficiency and area are used to represent sensitivity. However, to simplify the calculation, L is temporarily accepted as a comprehensive parameter related to sensitivity). However, directly providing a formula that includes all these parameters may not be intuitive, because the sensitivity L does not usually appear directly in radiation transmission formulas. However, a conceptual framework can be constructed to understand this process. First, consider the atmospheric attenuation of UV radiation. The atmospheric transmittance τ(α) represents the proportion of radiation that is not absorbed or scattered when passing through the atmosphere. Therefore, if the average radiation intensity of the UV threat source is I, then the radiation intensity before reaching the receiver after atmospheric attenuation can be expressed as:

[0049] I_transmitted=I*τ(α)

[0050] Next, we need to consider the sensitivity of the receiver. Although L is not a standard parameter that directly represents sensitivity, it can be assumed to be related to the detection efficiency, area, or other sensitivity-related factors of the receiver. To simplify the problem, a sensitivity factor S can be introduced, which combines all sensitivity-related parameters of the receiver (including the possible L parameter):

[0051] S=f(L, other sensitivity parameters)

[0052] Then, the equivalent radiation intensity E at the receiving device can be expressed as a certain relationship between the radiation intensity after atmospheric attenuation and the sensitivity of the receiving device. Since the sensitivity is usually inversely proportional to the minimum radiation intensity that can be detected (that is, the higher the sensitivity, the lower the minimum radiation intensity that can be detected), it can be assumed that the equivalent radiation intensity E is a certain product or ratio of the radiation intensity after transmission I_transmitted and the sensitivity factor S (the specific form depends on how S and E are defined). However, in order to keep the calculation simple and avoid introducing unnecessary complexity, it can be simply assumed that E is proportional to I_transmitted and inversely proportional to S (in some normalized sense):

[0053] E=(I*τ(α)) / S'

[0054] Where S' is a normalized or adjusted form of the sensitivity factor S, which takes into account factors such as the actual detection capability of the receiving device and background noise. Note that S' here is not a direct function of L, but a comprehensive result of L and other sensitivity parameters.

[0055] In this embodiment, in step three, the characteristics of the ultraviolet threat source are simulated as follows: S301: designing a collimator to simulate a target at infinity, with the spectrum of the collimator being the working range of the receiving device; S302: adjusting the radiation intensity of the light source emitted by the collimator, and designing the light source to include three gears with different radiation intensities, namely, gear one greater than E, gear two equal to E, and gear three less than E; S303: designing the experimental platform as an optical platform, and using vibration isolation materials on the optical platform to avoid optical path jitter caused by factors such as vibration; S304: making a tooling to fix the receiving device and the ultraviolet radiometer; S305: fixing the collimator on the optical platform, fixing the ultraviolet radiometer on the tooling, and using the ultraviolet radiometer to measure the radiation intensity of the three gears of the collimator to determine whether it meets the requirements of greater than E, equal to E, and less than E.

[0056] In this embodiment, if Figure 2As shown, the collimator includes two parallel collimator fixing brackets 102, and the bottom end surface of the collimator fixing brackets 102 is provided with four collimator fixing screw holes 101 distributed in a rectangular shape. The top ends of the two collimator fixing brackets 102 are commonly fixedly connected to a collimator protective housing 107, and an ultraviolet light source 103 is fixedly connected to one side of the interior of the collimator protective housing 107. One side of the ultraviolet light source 103 is fixedly connected to a frosted glass 104, and one side of the frosted glass 104 is fixedly connected to a graticule 105, one side of the graticule 105 is fixedly connected to a reflector 106, and one side of the reflector 106 is fixedly connected to an objective lens 108, and one side of the objective lens 108 is fixedly connected to a light outlet 1010. The ultraviolet light source 103 emits ultraviolet light 109, and the ultraviolet light 109 passes through the frosted glass 104, the graticule 105, the reflector 106 and the objective lens 108 and is emitted from the light outlet 1010.

[0057] In this embodiment, if Figure 3 As shown, the fixture for fixing the UV radiometer includes a bracket 202, and a radiometer fixing screw hole 201 is provided in the middle of the top surface of the bracket 202, and bracket mounting screw holes 203 are symmetrically provided on both sides of the bottom surface of the bracket 202. During use, the collimator is fixed to the optical platform through the collimator fixing screw hole 101 using fixing screws. The UV radiometer with an operating frequency of λ1 to λ2 is fixed to the bracket 202 using the fixing screws and the radiometer fixing screw hole 201. The bracket 202 is fixed to the optical platform through the bracket mounting screw hole 203 and the fixing screws, ensuring that the incident optical axis of the UV radiometer is parallel to the output optical axis of the collimator and that the optical centers are on the same horizontal line, thereby facilitating subsequent measurement and calibration of the three gears of the collimator.

[0058] In this embodiment, if Figure 4 As shown, the tooling for fixing the receiving device includes a receiving device fixing bracket 304, and the bottom end surface of the receiving device fixing bracket 304 is provided with four bracket fixing screw holes 305 distributed in a rectangular pattern. A vertical receiving device fixing screw hole 301 is provided in the middle of the top surface of the receiving device fixing bracket 304. A receiving device placement hole 302 is provided on one side of the receiving device fixing bracket 304, and a horizontal receiving device fixing screw hole 303 is provided on the other side of the receiving device fixing bracket 304. During use, the receiving device is placed in the receiving device placement hole 302, and fixing screws are screwed into the vertical receiving device fixing screw holes 301 and the horizontal receiving device fixing screw holes 303 to fix the receiving device to the receiving device fixing bracket 304. The receiving device fixing bracket 304 is fixed to the optical platform through the bracket fixing screw holes 305 and the screws, ensuring that the optical axis of the receiving device is parallel to the output optical axis of the collimator, the optical centers are on the same horizontal line, and the position of the receiving device objective lens is at the same position as the receiving end of the radiometer.

[0059] In this embodiment, in step 4, the specific process of testing the ultraviolet detection sensitivity of the receiving device is as follows: S401: using the first gear of the collimator to test the receiving device to determine whether the receiving device has the alarm capability. More specifically, using the first gear of the collimator to simulate the radiation source to irradiate the receiving device, the receiving device generates an alarm signal, indicating that it has the alarm capability, otherwise the receiving device does not have the alarm capability; S402: using the second gear of the collimator to test the receiving device to determine whether the sensitivity of the receiving device meets the design indicators. More specifically, using the second gear of the collimator to simulate the radiation source to irradiate the receiving device. If the receiving device generates an alarm signal, it means that it has the alarm capability. Otherwise, the receiving device does not have the alarm capability. The second-level simulated radiation source of the collimator is used to irradiate the receiving device that can generate an alarm in the first level of the collimator. The receiving device generates an alarm signal, indicating that the ultraviolet detection sensitivity index of the receiving device is qualified, otherwise it is unqualified; S403: Use the third level of the collimator to test the receiving device to determine whether the sensitivity of the receiving device is better than the design index. More specifically, use the third-level simulated radiation source of the collimator to irradiate the receiving device that can generate an alarm in the second level of the collimator. The receiving device generates an alarm signal, indicating that the ultraviolet detection sensitivity of the receiving device is better than the design index.

[0060] The present invention is applied to the test of ultraviolet detection sensitivity, and provides a radiation intensity equivalence method, a set of simulated light source equipment simulating parallel light, a set of corresponding test tooling, and a test method for ultraviolet detection sensitivity. According to the test method of the patent of the present invention, it is possible to judge whether the ultraviolet detection sensitivity of the receiving device meets the design indicators, and provide a reference basis for whether the ultraviolet detection sensitivity of the receiving device is qualified.

[0061] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0062] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A method for testing the detection sensitivity of an ultraviolet receiving device, characterized in that: The following steps are involved: Step 1: Based on the actual situation, formulate an atmospheric transmittance standard that meets the conditions within the operating band of the receiving device; Step 2: Based on the assumed working environment conditions when designing the receiving device, formulate a radiation intensity equivalent standard that meets the conditions; Step 3: Design a UV light source to simulate the characteristics of the UV threat source from the transmitter to the receiver; Step 4: Test the UV detection sensitivity of the receiving device to determine whether it meets the design specifications.

2. The method for testing the detection sensitivity of an ultraviolet receiving device according to claim 1, wherein: In step 1, the atmospheric transmittance standard is formulated as follows: S101: Use a spectrophotometer to test the filters of multiple qualified receiving devices, and record the center wavelengths and passband ranges of 20 groups of filters respectively; S102: Calculate the test data and take the average of the center wavelengths of all filters as the actual center wavelength λ; S103: Under the conditions of meteorological atmospheric visibility of 23 km, horizontal transmission distance equal to the ultraviolet detection sensitivity design index L of the receiving device, and altitude equal to the altitude parameter corresponding to the design index L, determine the atmospheric attenuation coefficient α(λ) for ultraviolet light with a wavelength of λ; S104: Determine the atmospheric transmittance τ (α) based on the atmospheric attenuation coefficient.

3. The method for testing the detection sensitivity of an ultraviolet receiving device according to claim 2, wherein: In step 2, the radiation intensity equivalent standard is formulated as follows: S201: Using a photon counting method, measure the maximum ultraviolet radiation intensity of commonly used ultraviolet threat sources in the working band of the receiving device, and take the average value as I; S202: Based on the atmospheric transmittance τ (α) and the average radiation intensity I, L of the ultraviolet threat source, the ultraviolet detection sensitivity design index of the receiving device is taken, and the equivalent radiation intensity E of the ultraviolet radiation source reaching the receiving device end when the transmission distance L is calculated using the formula.

4. The method for testing the detection sensitivity of an ultraviolet receiving device according to claim 3, wherein: In step 3, the characteristics of the ultraviolet threat source are simulated as follows: S301: Design a collimator to simulate a target at infinity. The spectrum of the collimator is the working range of the receiving device. S302: Adjust the radiation intensity of the light source emitted by the collimator. The light source is designed to include three different radiation intensity levels, namely, level 1 greater than E, level 2 equal to E, and level 3 less than E. S303: Design the experimental platform as an optical platform, which uses vibration isolation materials to avoid optical path jitter caused by vibration and other factors; S304: Make tooling for fixing the receiving device and the UV radiometer; S305: Fix the collimator on the optical platform and the UV radiometer on the tooling. Use the UV radiometer to measure the radiation intensity of the collimator at three levels to determine whether it satisfies the conditions of being greater than E, equal to E, or less than E.

5. The method for testing the detection sensitivity of an ultraviolet receiving device according to claim 4, wherein: The collimator comprises two parallel collimator fixing brackets (102), and the bottom end surface of the collimator fixing bracket (102) is provided with four collimator fixing screw holes (101) distributed in a rectangular shape, the top ends of the two collimator fixing brackets (102) are fixedly connected to a collimator protection housing (107), and one side of the interior of the collimator protection housing (107) is fixedly connected to an ultraviolet light source (103), one side of the ultraviolet light source (103) is fixedly connected to a frosted glass (104), and the frosted glass (104) is fixedly connected to the collimator protection housing (107). 04), a grating plate (105) is fixedly connected to one side of the grating plate (105), a reflector (106) is fixedly connected to one side of the reflector (106), an objective lens (108) is fixedly connected to one side of the objective lens (108), a light outlet (1010) is fixedly connected to one side of the objective lens (108), the ultraviolet light source (103) emits ultraviolet light (109), and the ultraviolet light (109) passes through the frosted glass (104), the grating plate (105), the reflector (106) and the objective lens (108) and is emitted from the light outlet (1010).

6. The method for testing the detection sensitivity of an ultraviolet receiving device according to claim 5, wherein: The fixture for fixing the ultraviolet radiometer comprises a bracket (202), wherein a radiometer fixing screw hole (201) is provided at the middle position of the top end surface of the bracket (202), and bracket mounting screw holes (203) are symmetrically provided on both sides of the bottom end surface of the bracket (202).

7. A method for testing the detection sensitivity of an ultraviolet receiving device according to claim 6, characterized in that: The tooling for fixing the receiving device comprises a receiving device fixing bracket (304), and the bottom end surface of the receiving device fixing bracket (304) is provided with four bracket fixing screw holes (305) distributed in a rectangular shape, a receiving device vertical fixing screw hole (301) is provided at the middle position of the top end surface of the receiving device fixing bracket (304), and a receiving device placement hole (302) is provided on one side surface of the receiving device fixing bracket (304), and a receiving device horizontal fixing screw hole (303) is provided on the other side surface of the receiving device fixing bracket (304).

8. A method for testing the detection sensitivity of an ultraviolet receiving device according to claim 7, characterized in that: In step 4, the specific process of testing the ultraviolet detection sensitivity of the receiving device is as follows: S401: Use the collimator to test the receiving device in the first gear to determine whether the receiving device has the alarm capability; S402: Use the collimator in the second gear to test the receiving device to determine whether the sensitivity of the receiving device meets the design specifications; S403: Use the collimator to test the receiving device at three levels to determine whether the sensitivity of the receiving device is better than the design index.

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