A testing fixture for humidifier controllers and instruments

Abstract

This utility model discloses a testing fixture for a humidifier controller and instrument, including a humidity detection module, a temperature detection module, a flow control module, a data acquisition module, and a host computer. The humidity detection module, temperature detection module, and flow control module are used to measure the relative humidity, temperature, and flow rate of the gas in the pipeline of the humidifier under test, respectively. The data acquisition module is electrically connected to the temperature detection module, humidity detection module, and flow control module, and then uploads the acquired data to the host computer, thereby realizing the reading, display, and fitting calculation of the acquired data. This utility model can assist in the effective detection of the protective functions of the humidifier controller and instrument, including temperature, flow rate, relative humidity, humidification output, and hazardous output, thus providing accurate and reliable testing basis for the safe use of humidifiers and their accessories. It has the advantages of simple structure, convenient operation, flexible use, accuracy, and high efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment metrology and testing technology, specifically relating to a testing fixture for a humidifier controller and instrument. Background Technology

[0002] Because gases used for medical purposes do not contain sufficient moisture, direct use can damage or irritate the respiratory tract. Therefore, a humidifier is needed to increase the humidity of the gas delivered to the patient. Insufficient humidity at the patient connection point can cause dryness of the upper respiratory tract or dryness of tracheobronchial secretions at the tracheostomy tube site, which may lead to airway narrowing or even obstruction.

[0003] Currently, many humidifiers primarily use heating to increase the humidity of the output gas, while simultaneously heating the breathing tubing to improve conversion efficiency and reduce moisture loss (condensation) and heat loss within the tubing. However, typical breathing tubing may not be able to withstand the heat generated by the humidifier and the heating device in the breathing tubing. Furthermore, many humidifier manufacturers configure heated breathing tubing with different output power; although physically interchangeable, they are not electrically interchangeable. Using an incompatible humidifier and heated breathing tubing could lead to gas overheating, tubing melting, burns to the patient and operator, or even fire. Therefore, the safe use of humidifiers depends on the interaction between the humidifier and various accessories, which imposes specific requirements on the basic safety and performance of humidifiers and their accessory combinations.

[0004] Based on this, the Chinese industry standard YY9706.274 "Medical electrical equipment - Part 2-74: Particular requirements for basic safety and basic performance of respiratory humidification equipment" puts forward specific requirements for the accuracy of humidifier controllers and instruments and the protection against dangerous outputs. These mainly include 210.12.1.101 measurement of humidification output, 210.12.1.103 measurement of the function of the gas temperature monitoring device, and 201.12.4 measurement of the protection function (over-temperature) of dangerous outputs. However, there is currently no complete and reliable testing tooling to assist in the effective testing of the accuracy of humidifier controllers and instruments and the protection performance against dangerous outputs. Summary of the Invention

[0005] Purpose of the invention: In order to ensure the safe use of humidifiers and their accessory assemblies, this utility model provides a testing fixture for humidifier controllers and instruments, which can assist in the effective testing of the output of the humidifier controller and instrument under test, including temperature, flow rate, relative humidity, humidification output, and the protective function (specific enthalpy) of dangerous output, thereby providing a testing basis for the process supervision of humidifiers and their accessory assemblies.

[0006] Summary of the Invention: To achieve the above objectives, this utility model provides a testing fixture for a humidifier controller and instrument, including a humidity detection module, a temperature detection module, a flow control module, a data acquisition module, and a host computer. The humidity detection module measures the relative humidity of the gas in the pipeline of the humidifier under test; the temperature detection module measures the temperature of the gas in the pipeline of the humidifier under test; and the flow control module measures and controls the flow rate of the gas in the pipeline of the humidifier under test. The data acquisition module is electrically connected to the temperature detection module, humidity detection module, and flow control module, thereby enabling data acquisition. The acquired data is then uploaded to the host computer, enabling the reading, display, and fitting calculation of the acquired data.

[0007] Specifically, the humidity detection module includes a humidity sensor and a first mounting housing. The humidity sensor is installed at the detection end of the first mounting housing and is electrically connected to the data acquisition module through an output wire passing through the first mounting housing. The temperature detection module includes a temperature sensor and a second mounting housing. The temperature sensor is installed at the detection end of the second mounting housing and is electrically connected to the data acquisition module through an output wire passing through the second mounting housing.

[0008] Furthermore, the testing fixture also includes an intermediate connector, which is a hollow tube used to connect the gas pipeline of the humidifier under test. The tube wall of the intermediate connector is provided with humidity detection holes and temperature detection holes, which are respectively adapted to the detection ends of the first mounting shell and the second mounting shell.

[0009] Furthermore, the detection ends of the first mounting housing and the second mounting outer shell adopt an outward contraction design, and correspondingly, the inner walls of the two detection holes adopt an inward contraction design to facilitate insertion and fixation.

[0010] Furthermore, the air inlet of the flow control module can be connected to the output pipeline of the humidifier under test through an intermediate connector, thereby measuring and controlling the output gas flow rate of the humidifier under test. At the same time, it can also be connected to a humidity detection module and a temperature detection module through two detection holes on the intermediate connector, thereby simultaneously measuring the output gas temperature and relative humidity of the humidifier under test.

[0011] Furthermore, the outlet of the flow control module is connected to a tapered pipe to increase the air resistance of the pipeline, which facilitates the normal operation of the humidifier and its accessories.

[0012] Furthermore, both the first mounting housing and the second mounting outer shell are constructed as L-shaped hollow shells, thereby fixing the humidity sensor and the temperature sensor in the detection end of the first mounting housing and the second mounting outer shell respectively. The output wires of the humidity sensor and the temperature sensor pass through the first mounting housing and the second mounting outer shell respectively and are connected to a quick plug, thereby forming a wiring terminal.

[0013] Specifically, the data acquisition module includes a humidity acquisition module, a temperature acquisition module, and a USB expansion module. The humidity detection module is electrically connected to the USB expansion module through the humidity acquisition module, the temperature detection module is electrically connected to the USB expansion module through the temperature acquisition module, the flow control module is electrically connected to the USB expansion module, and the USB expansion module is electrically connected to the host computer, thereby outputting the acquired data to the host computer via USB communication.

[0014] Generally, only one flow control module is needed, which is used to measure and control the flow rate of the gas output from the humidifier under test; while the number of temperature detection modules and humidity detection modules can be selected according to different test requirements, thereby measuring the temperature and relative humidity of the gas input and output of the humidifier under test (preferably 3 groups are used to measure the temperature and humidity data of the air inlet, air outlet and patient connection port of the humidifier under test respectively).

[0015] Furthermore, the testing fixture also includes a fixture housing for integrating the flow control module and the data acquisition module; the fixture housing is provided with an air inlet and an air outlet, which are respectively connected to the flow control module through air pipes; the fixture housing is provided with a humidity detection connector, a temperature detection connector, and a host computer connector, thereby realizing the electrical connection between the data acquisition module and the humidity detection module, the temperature detection module, and the host computer.

[0016] Preferably, the tooling housing is provided with one air inlet, one air outlet, three temperature detection connectors and three humidity detection connectors, so as to make electrical connections with three sets of temperature and humidity detection modules to form three sets of serial port channels, thereby meeting different testing requirements (such as humidification output and hazardous output testing).

[0017] Furthermore, the testing fixture also includes a power supply module for supplying power to the temperature detection module, humidity detection module, flow control module, and data acquisition module.

[0018] Beneficial effects: This utility model can assist in the effective detection of the protective functions (specific enthalpy) of the controller and instrument output of the tested humidifier, including temperature, flow rate, relative humidity, humidification output, and dangerous output. This provides accurate and reliable detection basis for the safe use of humidifiers and their accessories. It has the advantages of simple structure, convenient operation, flexible use, accuracy and efficiency.

[0019] Specifically, the aforementioned intermediate connector and temperature and humidity detection module are flexible in their usage, and can be flexibly connected to different interfaces according to different testing needs. Alternatively, the temperature and humidity detection module can be directly attached to the port being tested. Furthermore, this invention features multiple temperature and humidity detection channels, allowing selection of the appropriate temperature and humidity serial port channel for fitting calculations, thereby completing the calculation of humidification output and hazardous output (i.e., specific enthalpy). Attached Figure Description

[0020] Figure 1 This is a circuit diagram of the detection tooling in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the humidity detection module in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the temperature detection module in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the intermediate connecting member in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the tooling housing in an embodiment of the present utility model;

[0025] Figure 6 This is a test connection diagram of the humidification output when the input gas source is dry gas in an embodiment of this utility model;

[0026] Figure 7 This is a test connection diagram of the humidification output when the input gas source is a non-dry gas in an embodiment of this utility model;

[0027] Figure 8 This is a test connection diagram of the specific enthalpy in an embodiment of this utility model;

[0028] Figure 9 This is a block diagram illustrating the testing principle of an embodiment of the present invention;

[0029] The diagram includes: 1. Humidity detection module, 2. Temperature detection module, 3. Flow control module, 4. Humidity acquisition module, 5. Temperature acquisition module, 6. USB expansion module, 7. Power module, 8. Host computer, 9. Humidity sensor, 10. Long arm, 11. Short arm, 12. Output wire, 13. Temperature sensor, 14. Intermediate connector, 15. Humidity detection port, 16. Temperature detection port, 17. Connecting handle, 18. Humidity detection connector, 19. Temperature detection connector, 20. Host computer connector, 21. Air inlet, 22. Air pipe, 23. Conical tube, 24. Power button, 25. Power input interface, 26. Tooling housing. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0031] Reference Figure 1 The testing fixture for a humidifier controller and instrument provided in this embodiment mainly includes a humidity detection module 1, a temperature detection module 2, a flow control module 3, a humidity acquisition module 4, a temperature acquisition module 5, a USB expansion module 6, a power supply module 7, and a host computer 8.

[0032] Specifically, the humidity detection module 1 measures the relative humidity of the gas in the humidifier pipeline under test and is electrically connected to the USB expansion module 6 through the humidity acquisition module 4, thereby realizing data acquisition and recording; the temperature detection module 2 measures the temperature of the gas in the humidifier pipeline under test and is electrically connected to the USB expansion module 6 through the temperature acquisition module 5, thereby realizing data acquisition and recording; the flow control module 3 measures and controls the gas flow rate (generally mass flow rate) in the humidifier pipeline under test and is electrically connected to the USB expansion module 6, thereby realizing control, acquisition, and recording; the USB expansion module 6 is used to upload the acquired data to the host computer 8, and the power module 7 is used to supply power to the above modules; the host computer 8 can be a computer, which receives the acquired data transmitted by the USB expansion module 6 through USB communication, thereby realizing the reading, display, and fitting calculation of the acquired data.

[0033] Specifically, the humidity detection module 1 mainly includes a humidity sensor 9 and a first mounting housing. The humidity sensor 9 is mounted on the detection end of the first mounting housing and is electrically connected to the humidity acquisition module 4 via an output wire 12 passing through the first mounting housing. For example, the humidity sensor 9 is model HIH-4000-003; refer to... Figure 2 The first mounting housing is an L-shaped hollow component, including a long arm 10 and a short arm 11 that are interconnected. The humidity sensor 9 is fixed inside the long arm 10 by adhesive, so that its sensing surface is exposed outside the first mounting housing, thereby forming a detection end. The output wire 12 passes through the short arm 11 and is connected to a quick plug, thereby forming a wiring end. In addition, the short arm 11 can also be used as a plug handle.

[0034] Specifically, the temperature detection module 2 mainly includes a temperature sensor 13 and a second mounting housing. The temperature sensor 13 is also mounted on the detection end of the second mounting housing and is electrically connected to the temperature acquisition module 5 via an output wire 12 passing through the second mounting housing. For example, the model number of the temperature sensor 13 is 192-103LET-A01; see reference... Figure 3The housing structure and wiring method of the temperature detection module 2 are basically the same as those of the humidity sensor 9, and will not be described in detail here.

[0035] Furthermore, the aforementioned testing fixture also includes an intermediate connector 14. (Refer to...) Figure 4 The intermediate connector 14 is a hollow cylindrical component, which connects to the interface of the humidifier under test. Two detection holes, a humidity detection hole 15 and a temperature detection hole 16, are provided on the wall of the intermediate connector 14, respectively adapted to the detection ends of the humidity detection module 1 and the temperature detection module 2. Preferably, the detection ends of the humidity detection module 1 and the temperature detection module 2 are designed to taper outwards, while the inner walls of the humidity detection hole 15 and the temperature detection hole 16 are designed to taper inwards, facilitating the insertion and fixation of the detection ends. Furthermore, a connecting handle 17 can be provided on the intermediate connector 14 for easy gripping. In addition, the aforementioned mounting housing and the intermediate connector 14 can be made of plastic to allow for some elastic compression space during insertion.

[0036] Furthermore, the flow control module 3, humidity acquisition module 4, temperature acquisition module 5, USB expansion module 6, and power module 7 are all housed within the fixture housing 26, thus forming an integrated fixture that facilitates on-site testing. (Refer to...) Figure 5 The aforementioned fixture housing 26 has a three-channel humidity detection connector 18, a three-channel temperature detection connector 19, a host computer connector 20, and an air inlet 21 on one side, and a power input interface 25, a power button 24, and an air outlet on the other side. The two connectors are adapted to the quick-connect plugs of the humidity sensor 1 and the temperature detection module 2, respectively. The air inlet 21 is connected to the flow control module 3 via an air pipe 22, and then the air is discharged through the air outlet via the air pipe 22. Preferably, the air inlet 21 can be connected to the output pipeline of the humidifier under test via an intermediate connector 14, thereby measuring and controlling the output gas flow rate of the humidifier under test. Furthermore, the air outlet of the fixture housing 26 can be connected to a tapered tube 23 via an extended air pipe 22 to increase the air resistance of the test pipeline, facilitating the normal operation of the humidifier and its accessories.

[0037] For example, the humidity acquisition module 4 mainly includes a USB-6003 data acquisition unit, used to acquire relative humidity data measured by the humidity detection module 1; the temperature acquisition module 5 mainly includes a DAQM-4207 temperature acquisition unit, used to acquire temperature data measured by the temperature detection module 2; the data acquired by the flow control module 3, humidity acquisition module 4, and temperature acquisition module 5 are all output to the host computer 8 through the USB expansion module 6, thereby realizing the reading and display of data including gas temperature, flow rate, and relative humidity, and realizing the calculation and display of humidification output and hazardous output (specific enthalpy) through data fitting calculation.

[0038] According to the Chinese industry standard YY9706.274 "Medical Electrical Equipment - Part 2-74: Basic Safety and Basic Performance Requirements for Respiratory Humidification Equipment", the humidification output is defined as the mass of water vapor in a unit volume of gas under BTPS reference conditions. It can be measured using the gravimetric method (see Appendix CC of the above standard for details on the humidification output measurement method). When using dry input air, any moisture in the output air is added by the humidifier. When using non-dry input air, the moisture in the output air is the sum of the ambient humidity and the moisture added by the humidifier.

[0039] Specifically, the measurement method for humidification output is as follows:

[0040] When the input gas source is dry gas, refer to the hospital wall exhaust system and follow the instructions. Figure 6 The humidifier under test and the corresponding pipeline are connected in the following manner: the dry gas source is connected to the air inlet of the humidifier under test through a flow meter, thereby measuring and controlling the input gas flow rate of the humidifier under test. The outlet of the humidifier under test is connected to the flow control module 3 through the output pipeline; an intermediate connector 14 is connected to the input and output pipelines of the humidifier under test respectively, and the temperature detection module 2 is connected through the temperature detection hole 16 of the intermediate connector 14, thereby measuring the input and output gas temperatures T1 and T2 of the humidifier under test;

[0041] When the input gas source is a non-dry gas, if referring to normal atmospheric conditions, follow... Figure 7 The humidifier under test and its accessories are connected in the following manner: the air inlet of the humidifier under test and its accessories is connected to a non-drying gas source, and the air outlet of the humidifier under test and its accessories is connected to the flow control module 3 through the output pipeline; an intermediate connector 14 is connected to the input pipeline of the humidifier under test and its accessories, and the humidity detection module 1 and the temperature detection module 2 are connected through the humidity detection port 15 and the temperature detection port 16 of the intermediate connector 14, respectively, thereby measuring the input gas temperature of the humidifier under test and its accessories. and relative humidity A middle connector 14 is connected to the output pipeline of the humidifier and its accessories under test. The temperature detection module 2 is connected through the temperature detection hole 16 of the middle connector 14, thereby measuring the output gas temperature T2 of the humidifier and its accessories under test.

[0042] Furthermore, the measurement steps for humidification output are as follows:

[0043] a) Configure the humidifier and its accessories according to the user manual;

[0044] b) Confirm that the ambient temperature of the experiment is within the range of 17℃ to 23℃;

[0045] c) Depending on the input gas source, according to Figure 6 , 7 Connect the humidifier under test and the corresponding piping in the following manner;

[0046] d) If the input is dry gas, use a flow meter to set the gas flow rate to the maximum rated flow rate with a deviation of not less than ±5%, then turn on the humidifier under test and set it to the maximum output level; if the input is non-dry gas, adjust the flow control module 3 connected to the humidifier to the maximum flow rate (such as the maximum rated working pressure), and read the corresponding flow rate value at the patient connection port.

[0047] e) Turn off the humidifier, disconnect all accessories and equipment, including the dry air source, electrical connections and all extension tubes, and eliminate factors that are not related to the mass measurement. Weigh only the humidifier, its contents and the recommended breathing tubing using a weighing instrument, and record this mass as m0, which is the initial mass of the humidifier.

[0048] f) Depending on the input gas source, according to Figure 6 , 7 Reconnect all accessories and devices;

[0049] g) Start the humidifier, timer, and testing fixture;

[0050] h) The host computer records the start time as t0 and maintains the operator's settings throughout the entire test process;

[0051] i) Stop the test when the following test requirements are met and the total measurement accuracy can be ensured to be ±1 mg / L:

[0052] The humidifier used a sufficient amount of water from the effective volume of the storage tank, and the test lasted for a sufficient period of time (confirming that the experiment lasted for more than 2 hours to ensure that the error caused by the preheating time of the humidifier was minimized).

[0053] j) Record the end time t1, and record the test duration via the host computer. =(t1—t0)

[0054] k) Finally, weigh the humidifier again using a weighing instrument to determine its mass m1, and record the mass difference between the start and end of the test. =(m0—m1)

[0055] l) Calculate the volume of humidified gas V during the test using formula (1). BRPS :

[0056] (1);

[0057] In the formula, This indicates the gas flow rate under reference standard conditions, i.e., the gas flow rate value displayed by the mass flow meter (or humidifier accessory device);

[0058] SF represents the correction factor for BTPS. The mass flow meter used in this embodiment is under BTPS standard conditions, so the correction factor is 1 (for other conditions, refer to the correction factor provided in Table CC.1 of the above standard).

[0059] Indicates the duration of the test;

[0060] m) Calculate the humidification output (mg / L) using formulas (2) and (3):

[0061] (2);

[0062] (3);

[0063] In the formula, The mass change of the humidifier is expressed in milligrams (mg), and is determined by weighing using a standard balance.

[0064] This indicates the temperature of the input gas to the humidifier, in degrees Celsius (°C).

[0065] This indicates the absolute humidity of the input gas, based on the input gas temperature. and relative humidity The calculation yields a result in milligrams per liter (mg / L) when the input is dry gas. =0;

[0066] This indicates the relative humidity of the input non-dry gas.

[0067] Furthermore, according to the Chinese industry standard YY9706.274 "Medical Electrical Equipment - Part 2-74: Basic Safety and Basic Performance Requirements for Respiratory Humidification Equipment", the protection function for hazardous output (over-temperature) means that under normal use, single fault condition, rated flow range and maximum rated operating temperature conditions, the average temperature of the gas transmitted by the humidifier should not exceed the energy equivalent to 43°C and 100% relative humidity (specific enthalpy should not exceed 197 kJ / m dry gas).

[0068] Specifically, in order to calculate the specific enthalpy of the gas (see Appendix DD of the aforementioned standard for details on the specific enthalpy measurement method), the temperature T (°C), pressure P (Pa), and dew point temperature T of the transported gas are required. d (°C). Reference Figure 8The outlet of the humidifier under test and its accessories is connected to the flow control module 3 via an output pipeline; an intermediate connector 14 is connected to the outlet of the humidifier under test, and the temperature detection module 2 is connected through the temperature detection port 16 of the intermediate connector 14, thereby measuring the outlet gas temperature T of the humidifier under test. h A middle connector 14 is connected to the end of the output pipeline (i.e., the patient connection port), and a temperature detection module 2 is connected through the temperature detection hole 16 of the middle connector 14 to measure the transmission gas temperature T of the humidifier under test.

[0069] Furthermore, the test procedure for specific enthalpy is as follows:

[0070] A) Assemble the humidifier, breathing tubing, and accessories according to the instructions in the user manual. Figure 8 Connect the humidifier under test and the corresponding piping in the following manner;

[0071] B) Before each test, fill the humidification chamber to the maximum level, run the humidifier at the minimum rated flow rate, and preheat for 30 minutes.

[0072] C) Quickly adjust the flow rate to the maximum rated flow rate, with a sampling period of no more than 2 seconds, and measure the gas temperature over the next 240 seconds:

[0073] The gas temperature T (at the patient connection port) is the gas temperature T measured at the end of the output pipeline;

[0074] Gas temperature T at the humidifier outlet h and dew point temperature T d Take the smaller value between T and Th;

[0075] D) For 20℃≤T d For temperatures ≤60℃ and 20℃≤T≤80℃, the specific enthalpy ΔH of the gas is calculated using formula (4). s :

[0076] (4);

[0077] In the formula, air density Calculate according to formula (5):

[0078] (5);

[0079] In the formula, the specific humidity of the gas Calculate according to formula (6):

[0080] (6);

[0081] In the formula, saturated vapor pressure Calculate according to formula (7):

[0082] (7);

[0083] In the formula, The molecular weight of water vapor is expressed as 18.0153 g / mol.

[0084] The molecular mass of dry air is expressed as 28.9645 g / mol.

[0085] This represents the constant-pressure specific heat capacity of dry air, taken as 1.0051 kJ / (kg·K);

[0086] This represents the constant-pressure specific heat capacity of water vapor, taken as 1.8662 kJ / (kg·K);

[0087] This represents the latent heat of vaporization of water at 0℃, taken as 2501 kJ / kg;

[0088] R represents the universal gas constant, which is taken as 8.31446 J / (K·mol);

[0089] P represents atmospheric pressure, taken as 101325 Pa.

[0090] The specific implementation method of this embodiment is as follows:

[0091] First, connect the humidifier under test and its accessories according to the instructions. Then, install the temperature detection module 2 and humidity detection module 1 on the input pipeline of the humidifier under test through the intermediate connector 14 (select the installation position according to the different input air sources). Install the temperature detection module 2 and humidity detection module 1 at the air outlet of the humidifier under test and at the end of the output pipeline through the intermediate connector 14. This realizes the detection of temperature and relative humidity at three key locations (i.e., the air inlet, air outlet and patient connection port of the humidifier under test). In addition, connect the output pipeline of the humidifier under test and its accessories to the air inlet 21 on the tool housing 26 through the intermediate connector 14 to realize the detection of output gas flow rate.

[0092] In addition, the temperature detection module 2 / humidity detection module 1 can be directly attached to the port to be tested, or the temperature detection module 2 / humidity detection module 1 can be installed using the intermediate connector 14. Unused detection holes on the intermediate connector 14 can be sealed with corresponding plugs.

[0093] After completing all piping and wiring connections, first perform a preheating process for the humidifier and its accessories according to the testing requirements, and then proceed with the testing phase. (Refer to...) Figure 9 The testing methods implemented via a host computer include:

[0094] S1: Select the corresponding serial port channel to open or complete the settings of the corresponding serial port channel according to the test function;

[0095] S2: Open the serial port channel for gas temperature testing, connect and record 3 channels of temperature test data;

[0096] S3: Open the serial port channel for gas relative humidity testing, connect and record 3 channels of relative humidity test data;

[0097] S4: Set the maximum gas flow rate through the flow control module 3, open the serial port channel, connect and record one flow test data stream;

[0098] S5: Select the humidification output test function, select the temperature channel and relative humidity channel to be connected, calculate the humidification output based on the relevant parameters entered, and record the data;

[0099] S6: Select the protection test for hazardous output, select the temperature channel, relative humidity channel, and flow channel to be connected, calculate the specific enthalpy based on the relevant parameters entered, and record the data.

[0100] This invention provides three channels for humidity detection and measurement, three channels for temperature detection and measurement, and one channel for flow control detection. This enables the detection of temperature, flow rate, and relative humidity of the input and output gases. By integrating and calculating the data from the corresponding channels, it completes the detection of humidification output and hazardous output (i.e., specific enthalpy), thereby providing accurate and reliable detection data for the safe use of the humidifier and its accessories.

[0101] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A humidifier controller and meter detection fixture, characterized by, The system includes a humidity detection module, a temperature detection module, a flow control module, a data acquisition module, and a host computer. The humidity detection module measures the relative humidity of the gas in the pipeline of the humidifier under test. The temperature detection module measures the temperature of the gas in the pipeline of the humidifier under test. The flow control module measures and controls the flow rate of the gas in the pipeline of the humidifier under test. The data acquisition module is electrically connected to the temperature detection module, humidity detection module, and flow control module to acquire data and upload the acquired data to the host computer, thereby enabling the reading, display, and fitting calculation of the acquired data.

2. The inspection tool of claim 1, wherein The humidity detection module includes a humidity sensor and a first mounting housing. The humidity sensor is installed at the detection end of the first mounting housing and is electrically connected to the data acquisition module through an output wire passing through the first mounting housing. The temperature detection module includes a temperature sensor and a second mounting housing. The temperature sensor is installed at the detection end of the second mounting housing and is electrically connected to the data acquisition module through an output wire passing through the second mounting housing.

3. The inspection tool of claim 2, wherein, It also includes an intermediate connector, which is a hollow tube used to connect the gas pipeline of the humidifier under test. The tube wall of the intermediate connector is provided with humidity detection holes and temperature detection holes, which are respectively adapted to the detection ends of the first mounting shell and the second mounting shell.

4. The inspection tool of claim 3, wherein, The detection ends of the first mounting housing and the second mounting outer shell are designed to retract outwards.

5. The inspection tool of claim 3, wherein, The air inlet of the flow control module is connected to the output pipeline of the humidifier under test through an intermediate connector.

6. The inspection tool of claim 5, wherein, The air outlet of the flow control module is connected to a tapered pipe.

7. The inspection tool of claim 2, wherein, Both the first mounting housing and the second mounting outer shell are constructed as L-shaped hollow shells, thereby fixing the humidity sensor and the temperature sensor in the detection end of the first mounting housing and the second mounting outer shell respectively. The output wires of the humidity sensor and the temperature sensor pass through the first mounting housing and the second mounting outer shell respectively and are connected to a quick plug, thereby forming a wiring terminal.

8. The inspection tool of claim 1, wherein, The data acquisition module includes a humidity acquisition module, a temperature acquisition module, and a USB expansion module. The humidity detection module is electrically connected to the USB expansion module through the humidity acquisition module, the temperature detection module is electrically connected to the USB expansion module through the temperature acquisition module, the flow control module is electrically connected to the USB expansion module, and the USB expansion module is electrically connected to the host computer, thereby outputting the acquired data to the host computer via USB communication.

9. The inspection tool of claim 1, wherein, It also includes a tooling housing for integrating the flow control module and the data acquisition module; the tooling housing is provided with an air inlet and an air outlet, which are respectively connected to the flow control module through air pipes; the tooling housing is provided with a humidity detection connector, a temperature detection connector and a host computer connector, thereby realizing the electrical connection between the data acquisition module and the humidity detection module, the temperature detection module and the host computer respectively.

10. The inspection tool of claim 1, wherein, It also includes a power supply module to power the temperature detection module, humidity detection module, flow control module, and data acquisition module.

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