Sensor assembly for respirator detection

Abstract

The utility model discloses a sensor assembly for respirator detection, which relates to the technical field of respirator detection and comprises a fixed box, the fixed box is arranged in a cabin for respirator detection, a head mold is arranged in the cabin, and the head mold is used for wearing a hood of a detected respirator; a first wind pressure transmitter, a second wind pressure transmitter, a carbon dioxide sensor, a first particle laser counter and a second particle laser counter are fixedly arranged in the fixed box; a first temperature and humidity sensor is fixedly arranged in a right ear of the head mold, a noise sensor is fixedly arranged in a left ear of the head mold, the device further comprises a second temperature and humidity sensor which is fixedly arranged in the cabin body and located in the space outside the head cover, and the second temperature and humidity sensor is located outside the fixing box. The device can be used for detecting various indexes such as static pressure difference, dynamic pressure difference, temperature and humidity, filtering efficiency, dead space and noise of a hood in respirator detection, and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of respirator detection, in particular to a sensor component used for respirator detection. Background Art

[0002] With the increasing number of highly pathogenic infectious diseases and highly contagious group infection incidents with increasingly shorter occurrence cycles, equipment and instruments for responding to biological threats and unknown viruses and biological contamination, such as powered air-exhaust purifying respirators, are playing an increasingly key role in the large-scale isolation and transfer of group infected people. It can play a key role in quickly isolating abnormally infected people and effectively curbing the speed of transmission.

[0003] The existing devices or instruments for testing the indicators of relevant protective equipment such as air-purifying respirators are relatively simple. The test items specified in the relevant standards can only be tested by a single test device for one item or function; for example: the static pressure difference, dynamic pressure difference, temperature and humidity, filtration efficiency, dead space, noise and other indicators of the positive and negative pressure hoods. The existing tests can only use different testing equipment or instruments to test the above indicators separately. There is no device or testing instrument in the industry that can perform special tests on the key indicators of positive and negative pressure hoods on the same platform or device, and test different indicators or functions.

[0004] Due to the lack of human head simulation, most of the current tests are not tests after wearing. Respiratory products can only be tested using testing instruments, and wearable tests cannot be performed. Utility Model Content

[0005] The purpose of the utility model is to provide a sensor assembly for respirator detection, so as to solve the problems existing in the above-mentioned prior art and realize the detection of multiple indicators in respirator detection.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a sensor assembly for respirator detection, comprising a fixed box, the fixed box is arranged in a cabin for respirator detection, and a head model is arranged in the cabin, the head model is used to wear the head cover of the respirator to be detected; a first wind pressure transmitter, a second wind pressure transmitter, a carbon dioxide sensor, a first particle laser counter and a second particle laser counter are fixed in the fixed box;

[0008] A first placement hole is provided at the forehead of the head mold, a first probe of the first wind pressure transmitter is provided at the first placement hole, and the first wind pressure transmitter is connected to the first probe of the first wind pressure transmitter through a first connecting pipe, the first probe of the first wind pressure transmitter is used to measure the air pressure of the cavity between the hood and the head mold, the second probe of the second wind pressure transmitter is provided in the cabin, and the second probe of the second wind pressure transmitter is used to measure the air pressure of the space in the cabin outside the hood;

[0009] The first probe of the second wind pressure transmitter is arranged in the breathing tube of the mouth of the head mold, the first probe of the second wind pressure transmitter is arranged at the second placement hole, and the second wind pressure transmitter is connected to the first probe of the second wind pressure transmitter through a second connecting pipe, the first probe of the second wind pressure transmitter is used to measure the air pressure of the cavity between the hood and the head mold, the second probe of the second wind pressure transmitter is arranged in the space outside the hood in the cabin, and the second probe of the second wind pressure transmitter is used to measure the air pressure of the space outside the hood in the cabin;

[0010] The carbon dioxide sensor is connected to the air outlet of the air pump through a third connecting pipe, and the air inlet of the air pump is connected to the air inlet of the breathing tube through a fourth connecting pipe;

[0011] The probe of the first particle laser counter is connected to the air inlet of the breathing tube through the fifth connecting tube, and one end of the fourth connecting tube connected to the breathing tube and one end of the fifth connecting tube connected to the breathing tube are both inserted into the head mold;

[0012] The probe of the second particle laser counter is arranged in a space outside the hood in the cabin;

[0013] A first temperature and humidity sensor is fixedly installed in the right ear of the head model, a noise sensor is fixedly installed in the left ear of the head model, and a second temperature and humidity sensor is fixedly installed in the space outside the hood in the cabin, and the second temperature and humidity sensor is located outside the fixed box.

[0014] Preferably, it also includes a controller, which is fixed in the fixed box, and the first wind pressure transmitter, the second wind pressure transmitter, the carbon dioxide sensor, the first particle laser counter, the second particle laser counter, the first temperature and humidity sensor, the second temperature and humidity sensor and the noise sensor are respectively communicatively connected to the controller, and the controller is connected to the host computer signal.

[0015] Preferably, the second temperature and humidity sensor is fixed on a head mold bracket for supporting the head mold.

[0016] Preferably, a second bracket is fixedly provided in the right ear, and the first temperature and humidity sensor is fixedly connected to the second bracket.

[0017] Preferably, a first bracket is fixedly disposed in the left ear, and the noise sensor is fixedly connected to the first bracket.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The sensor assembly for respirator detection of the utility model can be used for detecting multiple indicators such as static pressure difference, dynamic pressure difference, temperature and humidity, filtration efficiency, dead space, noise, etc. of the hood during respirator detection. It is easy to use and avoids the time-consuming and laborious problem of using multiple different devices to detect the above-mentioned indicators in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a sensor assembly for respirator detection of the utility model;

[0022] Figure 2 It is a partial structural schematic diagram of a sensor assembly for respirator detection of the utility model;

[0023] in:

[0024] 1. Head model;

[0025] 2. The first temperature and humidity sensor;

[0026] 3. The first probe of the first wind pressure transmitter;

[0027] 4. Breathing tube;

[0028] 5. The second bracket;

[0029] 6. Noise sensor;

[0030] 7. Second particle laser counter;

[0031] 8. The first particle laser counter;

[0032] 9. Second wind pressure transmitter;

[0033] 10. The first wind pressure transmitter;

[0034] 11. Carbon dioxide sensor;

[0035] 12. Fixed box;

[0036] 13. Cabin;

[0037] 14. First connecting pipe;

[0038] 15. Second connecting pipe;

[0039] 16. The third connecting pipe;

[0040] 17. Fourth connecting pipe;

[0041] 18. Fifth connecting pipe;

[0042] 19. The first probe of the second wind pressure transmitter;

[0043] 20. The first bracket. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] The purpose of the utility model is to provide a sensor assembly for respirator detection, so as to solve the problems existing in the above-mentioned prior art and realize the detection of multiple indicators in respirator detection.

[0046] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] like Figure 1 to Figure 2 As shown, this embodiment provides a sensor assembly for respirator detection, including a fixed box 12, the fixed box 12 is arranged in a cabin 13 for respirator detection, and a head mold 1 is arranged in the cabin 13, and the head mold 1 is used to wear the head cover of the respirator to be detected; a first wind pressure transmitter 10, a second wind pressure transmitter 9, a carbon dioxide sensor 11, a first particle laser counter 8 and a second particle laser counter 7 are fixedly arranged in the fixed box 12;

[0048] A first placement hole is provided at the forehead of the head mold 1, a first probe 3 of the first wind pressure transmitter is provided at the first placement hole, and the first wind pressure transmitter 10 is connected to the first probe 3 of the first wind pressure transmitter through a first connecting pipe 14, the first probe 3 of the first wind pressure transmitter is used to measure the air pressure of the cavity between the hood and the head mold 1, the second probe of the second wind pressure transmitter 9 is provided in the cabin 13, and the second probe of the second wind pressure transmitter 9 is used to measure the air pressure of the space outside the hood in the cabin 13;

[0049] The first probe 19 of the second wind pressure transmitter is arranged in the breathing tube 4 of the mouth of the head mold 1, the first probe 19 of the second wind pressure transmitter is arranged at the second placement hole, and the second wind pressure transmitter 9 is connected to the first probe 19 of the second wind pressure transmitter through the second connecting pipe 15, the first probe 19 of the second wind pressure transmitter is used to measure the air pressure of the cavity between the hood and the head mold 1, the second probe of the second wind pressure transmitter 9 is arranged in the space outside the hood in the cabin 13, and the second probe of the second wind pressure transmitter 9 is used to measure the air pressure of the space outside the hood in the cabin 13;

[0050] The carbon dioxide sensor 11 is connected to the air outlet of the air pump through the third connecting pipe 16, and the air inlet of the air pump is connected to the air inlet of the breathing tube 4 through the fourth connecting pipe 17. It should be noted that the air inlet of the breathing tube 4 specifically refers to the position of the breathing tube 4 at the mouth of the head mold 1;

[0051] The probe of the first particle laser counter 8 is connected to the air inlet of the breathing tube 4 through the fifth connecting tube 18, and one end of the fourth connecting tube 17 connected to the breathing tube 4 and one end of the fifth connecting tube 18 connected to the breathing tube 4 are both inserted into the head mold 1;

[0052] The probe of the second particle laser counter 7 is arranged in the space outside the head cover in the cabin 13;

[0053] A first temperature and humidity sensor 2 is fixedly installed in the right ear of the head mold 1, and a noise sensor 6 is fixedly installed in the left ear of the head mold 1. It also includes a second temperature and humidity sensor (not shown in the figure) fixedly installed in the space outside the hood in the cabin 13, and the second temperature and humidity sensor is located outside the fixed box 12.

[0054] The sensor assembly for respirator detection of this embodiment can be used to detect multiple indicators such as static pressure difference, dynamic pressure difference, temperature and humidity, filtration efficiency, dead space, noise, etc. of the head cover during respirator detection. It is easy to use and avoids the time-consuming and laborious problem of using multiple different devices to detect the above indicators in the prior art. Specifically:

[0055] The detection of static pressure difference and dynamic pressure difference is realized by the first wind pressure transmitter 10 and the second wind pressure transmitter 9. Since the first probe 3 of the first wind pressure transmitter and the first probe 19 of the second wind pressure transmitter can measure the air pressure of the cavity between the hood and the head mold 1, the second probe of the first wind pressure transmitter 10 and the second probe of the second wind pressure transmitter 9 can measure the air pressure of the space outside the hood in the cabin 13, so the first wind pressure transmitter 10 and the second wind pressure transmitter 9 can measure the static pressure difference and dynamic pressure difference of the hood, and due to the different setting positions of the first probe 3 of the first wind pressure transmitter and the first probe 19 of the second wind pressure transmitter, the measurement structure is more objective, thereby improving the accuracy of the hood pressure difference measurement;

[0056] The measurement of the temperature and humidity of the cavity between the hood and the head mold 1 is achieved through the first temperature and humidity sensor 2. The first temperature and humidity sensor 2 is set in the right ear of the head mold 1, and the cavity between the hood and the head mold 1 is connected to the right ear of the head mold 1, so the first temperature and humidity sensor 2 can measure the temperature and humidity of the cavity between the hood and the head mold 1. The temperature and humidity of the space outside the hood in the cabin 13 is measured by the second temperature and humidity sensor. By comparing the detection values ​​of the first temperature and humidity sensor 2 and the second temperature and humidity sensor, the performance of the respirator hood can be objectively reflected;

[0057] The measurement of the filtration efficiency is achieved by the first particle laser counter 8 and the second particle laser counter 7. The first particle laser counter 8 detects the number of particles in the cavity between the hood and the head mold 1, and the second particle laser counter 7 detects the number of particles in the space outside the hood in the cabin 13. By comparing the above two detection parameters, the filtration efficiency of the respirator hood can be intuitively reflected.

[0058] Regarding the measurement of dead space: the dead space in the air supply and exhaust filtering respirator refers to the volume fraction of the carbon dioxide gas re-inhaled in the previous exhalation, which is used to evaluate the safety of the respiratory system and determine the performance of the personal protective equipment; after an exhalation, the air supply and exhaust filtering respirator needs to discharge the gas between the head cover and the hood, but due to the limitations of the fan of the air supply and exhaust filtering respirator and the defects of the physical structure design, the carbon dioxide gas exhaled into the cavity between the hood and the head mold 1 in the last exhalation cannot be completely discharged to the external environment, resulting in the carbon dioxide gas in the previous exhalation being re-inhaled during the next inhalation, and the carbon dioxide sensor 11 can detect the concentration of carbon dioxide in the gas inhaled by the breathing tube 4 of the head mold 1 during the next inhalation, thereby facilitating the dead space test.

[0059] Regarding noise measurement: the noise measurement is achieved through a noise sensor 6 arranged in the left ear of the head mold 1. The cavity between the hood and the head mold 1 is connected to the left ear of the head mold 1, so the measurement through the noise sensor 6 in the left ear of the head mold 1 can objectively reflect the noise that the wearer can hear when the hood is working.

[0060] In this embodiment, the first wind pressure transmitter 10, the second wind pressure transmitter 9, the carbon dioxide sensor 11, the first particle laser counter 8 and the second particle laser counter 7 are integrated in the fixed box 12, the first temperature sensor is arranged in the right ear of the head mold 1, and the noise sensor 6 is arranged in the left ear of the head mold 1. Only the second temperature and humidity sensor is fixed in the space outside the hood in the cabin 13, and each sensor is connected to its own probe through a pipeline, so that the structure of the sensor assembly is simplified to the greatest extent, making the structure of the sensor assembly simple and easy to use.

[0061] It should be noted that for the convenience of illustration and observation, Figure 1 The head mold 1 in the figure is not located in the cabin 13, but in actual application the head mold 1 is arranged inside the cabin 13. The first connecting tube 14, the second connecting tube 15, the fourth connecting tube 17 and the fifth connecting tube 18 extend into the head mold 1 from the neck of the head mold 1 to avoid the first connecting tube 14, the second connecting tube 15, the fourth connecting tube 17 and the fifth connecting tube 18 interfering with the wearing of the head mask.

[0062] In the optional scheme of this embodiment, it is more preferred to further include a controller, which is fixed in the fixed box 12. The first wind pressure transmitter 10, the second wind pressure transmitter 9, the carbon dioxide sensor 11, the first particle laser counter 8, the second particle laser counter 7, the first temperature and humidity sensor 2, the second temperature and humidity sensor and the noise sensor 6 are respectively communicated with the controller, and the controller is connected to the host computer signal; the controller is used to receive the detection values ​​of each sensor and feed them back to the host computer for calculation and display.

[0063] In an optional solution of this embodiment, it is more preferred that the second temperature and humidity sensor is fixed on a head mold 1 bracket for supporting the head mold 1 .

[0064] In an optional solution of the present embodiment, it is more preferred that a second bracket 5 is fixedly provided in the right ear, and the first temperature and humidity sensor 2 is fixedly connected to the second bracket 5 .

[0065] In an optional solution of the present embodiment, more preferably, a first bracket 20 is fixedly provided in the left ear, and the noise sensor 6 is fixedly connected to the first bracket 20 .

[0066] In the description of the present invention, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0067] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A sensor assembly for respirator detection, characterized in that: The invention comprises a fixed box, wherein the fixed box is arranged in a cabin for testing a respirator, and a head model is arranged in the cabin, and the head model is used to wear the head cover of the tested respirator; a first wind pressure transmitter, a second wind pressure transmitter, a carbon dioxide sensor, a first particle laser counter and a second particle laser counter are fixed in the fixed box; A first placement hole is provided at the forehead of the head mold, a first probe of the first wind pressure transmitter is provided at the first placement hole, and the first wind pressure transmitter is connected to the first probe of the first wind pressure transmitter through a first connecting pipe, the first probe of the first wind pressure transmitter is used to measure the air pressure of the cavity between the hood and the head mold, the second probe of the second wind pressure transmitter is provided in the cabin, and the second probe of the second wind pressure transmitter is used to measure the air pressure of the space in the cabin outside the hood; The first probe of the second wind pressure transmitter is arranged in the breathing tube of the mouth of the head model, and the second wind pressure transmitter is connected to the first probe of the second wind pressure transmitter through a second connecting pipe, the first probe of the second wind pressure transmitter is used to measure the air pressure of the cavity between the hood and the head model, the second probe of the second wind pressure transmitter is arranged in the space outside the hood in the cabin, and the second probe of the second wind pressure transmitter is used to measure the air pressure of the space outside the hood in the cabin; The carbon dioxide sensor is connected to the air outlet of the air pump through a third connecting pipe, and the air inlet of the air pump is connected to the air inlet of the breathing tube through a fourth connecting pipe; The probe of the first particle laser counter is connected to the air inlet of the breathing tube through the fifth connecting tube, and one end of the fourth connecting tube connected to the breathing tube and one end of the fifth connecting tube connected to the breathing tube are both inserted into the head mold; The probe of the second particle laser counter is arranged in a space outside the hood in the cabin; A first temperature and humidity sensor is fixedly installed in the right ear of the head model, a noise sensor is fixedly installed in the left ear of the head model, and a second temperature and humidity sensor is fixedly installed in the space outside the hood in the cabin, and the second temperature and humidity sensor is located outside the fixed box.

2. The sensor assembly for respirator detection according to claim 1, characterized in that: It also includes a controller, which is fixed in the fixed box. The first wind pressure transmitter, the second wind pressure transmitter, the carbon dioxide sensor, the first particle laser counter, the second particle laser counter, the first temperature and humidity sensor, the second temperature and humidity sensor and the noise sensor are respectively connected to the controller for communication, and the controller is connected to the host computer signal.

3. The sensor assembly for respirator detection according to claim 1, characterized in that: The second temperature and humidity sensor is fixed on a head mold bracket used for supporting the head mold.

4. The sensor assembly for respirator detection according to claim 1, characterized in that: A second bracket is fixedly disposed in the right ear, and the first temperature and humidity sensor is fixedly connected to the second bracket.

5. The sensor assembly for respirator detection according to claim 1, characterized in that: A first bracket is fixedly arranged in the left ear, and the noise sensor is fixedly connected to the first bracket.

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