Humidity detection tool and temperature and humidity detection system for drying tube
By combining the temperature and humidity detection module, ADC acquisition module, motor control module and main control module in the drying pipe humidity detection tool, we can determine whether the drying pipe is blocked based on the motor speed, which solves the problem that the existing technology cannot determine the blockage of the drying pipe, and realizes the More accurate service life assessment and replacement timing.
Patent Information
- Application Number
- CN202420094155.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-15
AI Technical Summary
The existing humidity detection circuit cannot determine whether the drying pipe is blocked, and can only detect humidity data. It cannot determine the blockage of the drying pipe to be measured based on the motor operation.
A humidity detection tool for drying pipes is designed, including temperature and humidity detection module, ADC acquisition module, motor control module and main control module. The temperature and humidity data are obtained through the temperature and humidity detection module, and the drying pipe to be tested is judged based on the motor speed. Whether it is blocked.
The temperature and humidity detection of the drying pipe to be tested is realized, and whether it is blocked is determined based on the motor speed is provided, which provides a more accurate service life prediction and replacement time, avoids blockage and measurement errors caused by water vapor in the gas.
Smart Images
Figure CN222188406U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a humidity detection technology for medical equipment, in particular to a humidity detection tool for a drying tube and a temperature and humidity detection system. Background Art
[0002] At present, some medical equipment needs to consider the temperature and humidity issues during the research and development process. For example, during the production process of the monitor, its end-tidal CO2 module needs to verify the service life and dehumidification capacity of the sampling tube (i.e., drying tube) it is equipped with. When the service life is reached, it needs to be replaced in time, otherwise the water vapor in the gas will cause the sampling tube to be blocked or form water mist, affecting the monitor's acquisition of the physiological parameters of the human body. Therefore, it is necessary to test the drying capacity of the drying tube and predict the service life of the drying tube.
[0003] However, the humidity detection circuits in the prior art are all for the detection of the human body or a specific environment (such as a ward, soil, atmospheric environment, etc.). For example, the utility model patent with application number 202221043957.0 and the name of a humidity sensor measurement circuit discloses that the capacitance signal of the humidity-sensitive element is converted into a frequency signal and sent to the main control circuit through a humidity detection circuit, and the temperature signal of the heating element is measured by a temperature measurement circuit and sent to the main control circuit. The main control circuit generates corresponding humidity information according to the frequency signal, and generates a heating control signal according to the result of comparing the temperature signal with the set temperature. The heating element is controlled to work based on the heating control signal, which can effectively reduce the response time of the humidity sensor under low temperature and high humidity conditions. However, this patent can only obtain humidity data, and cannot know whether the drying tube to be tested is blocked based on the operation of the motor. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a humidity detection tool for a drying tube, which can detect the temperature and humidity data of the drying tube to be tested and determine whether the drying tube to be tested is blocked according to the rotation of the motor.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A humidity detection tool for a drying tube comprises a temperature and humidity detection module, an ADC acquisition module, a motor control module and a main control module. When the main control module enables the motor control module to work and control the motor to start, the temperature and humidity detection module obtains the temperature and humidity of the drying tube to be tested and converts them into corresponding electrical signals. The ADC acquisition module converts the electrical signals into digital signals and sends them to the main control module. The main control module obtains corresponding temperature data and humidity data according to the digital signals, and determines whether the drying tube to be tested is blocked according to the rotation speed of the motor.
[0007] In the humidity detection tooling of the drying tube, there are two temperature and humidity detection modules, and the ADC acquisition module includes a chip selection unit and an ADC conversion unit. The electrical signals converted by the two temperature and humidity detection modules are sent to the ADC conversion unit after being selected by the chip selection unit, and are converted into digital signals by the ADC conversion unit and sent to the main control module.
[0008] The humidity detection tooling of the drying tube further comprises a display module, and the main control module controls the display module to display the temperature data and the humidity data.
[0009] In the humidity detection tooling of the drying tube, the display module includes a display driving unit and display units of the same number as the temperature and humidity detection module. The display driving unit enables the display unit to display the temperature data, the humidity data, or cyclically display the temperature data and the humidity data according to the control of the main control module.
[0010] In the humidity detection tooling of the drying tube, the main control module includes a main control chip, the chip select unit includes a chip select chip, a first resistor, a second resistor, a third resistor, a fourth resistor and a first capacitor, the X2 pin and the X3 pin of the chip select chip are connected to a temperature and humidity detection module, the X4 pin and the X5 pin of the chip select chip are connected to another temperature and humidity detection module, the X end of the chip select chip is connected to the ADC conversion unit through the first resistor and is also grounded through the first capacitor, the C pin of the chip select chip is connected to the motor control module through the second resistor, the B pin of the chip select chip is connected to the motor control module through the third resistor, and the A pin of the chip select chip is connected to the motor control module through the fourth resistor.
[0011] In the humidity detection tooling of the drying tube, the ADC conversion unit includes an ADC chip, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor, the AIN0 pin of the ADC chip is connected to one end of the first resistor and one end of the first capacitor, the SCLK pin of the ADC chip is connected to the PB13 pin of the main control chip through the fifth resistor, the CS non-pin of the ADC chip is connected to the PB12 pin of the main control chip through the sixth resistor, the DIN pin of the ADC chip is connected to the PB15 pin of the main control chip through the seventh resistor, and the DOUT pin of the ADC chip is connected to the PB14 pin of the main control chip through the eighth resistor.
[0012] In the humidity detection tooling of the drying tube, the motor control module includes a motor drive chip, the A7 pin and the A6 pin of the motor drive chip are each connected to the main control module through a resistor, and the B7 pin and the B6 pin of the motor drive chip are each connected to a motor.
[0013] In the humidity detection tooling of the drying tube, the display driving unit includes a display driving chip, each of the display units includes a digital tube, the CLK pin and the STB pin of the display driving chip are connected to the main control module, the SEG1 / KS1 pin of the display driving chip is connected to the 11th pin of the digital tube, the SEG2 / KS2 pin of the display driving chip is connected to the 7th pin of the digital tube, the SEG3 / KS3 pin of the display driving chip is connected to the 4th pin of the digital tube, the SEG4 / KS4 pin of the display driving chip is connected to the 2nd pin of the digital tube, and the display The SEG5 / KS5 pin of the display driver chip is connected to the 1st pin of the digital tube, the SEG6 / KS6 pin of the display driver chip is connected to the 10th pin of the digital tube, the SEG7 / KS7 pin of the display driver chip is connected to the 5th pin of the digital tube, the SEG8 / KS8 pin of the display driver chip is connected to the 3rd pin of the digital tube, the DIG2 pin of the display driver chip is connected to the 12th pin of the digital tube, the DIG3 pin of the display driver chip is connected to the 9th pin of the digital tube, and the DIG4 pin of the display driver chip is connected to the 8th pin of the digital tube.
[0014] In the humidity detection tooling of the drying tube, the temperature and humidity detection module includes a temperature and humidity sensor, a second capacitor and a third capacitor. The T pin of the temperature and humidity sensor is connected to the X2 pin or X4 pin of the chip select chip and is also grounded through the second capacitor. The RH pin of the temperature and humidity sensor is connected to the X3 pin or X4 pin of the chip select chip and is also grounded through the third capacitor.
[0015] A temperature and humidity detection system comprises an air supply device, a humidifier and a humidity detection device, wherein the humidity detection device comprises a detection chamber and a humidity detection tooling for a drying tube as described in any one of the above items; the drying tube to be tested and the humidifier are placed in the air supply device, the gas generated by the air supply device and the water vapor generated by the humidifier flow through the drying tube to be tested and are then sent into the detection chamber, and the temperature and humidity detection module of the humidity detection tooling for the drying tube obtains the temperature and humidity of the drying tube to be tested.
[0016] Compared with the prior art, the humidity detection tooling for a drying tube provided by the utility model comprises a temperature and humidity detection module, an ADC acquisition module, a motor control module and a main control module. When the main control module enables the motor control module to work and control the motor to be turned on, the temperature and humidity detection module obtains the temperature and humidity of the drying tube to be tested and converts them into corresponding electrical signals. The ADC acquisition module converts the electrical signals into digital signals and sends them to the main control module. The main control module obtains corresponding temperature data and humidity data according to the digital signals, and determines whether the drying tube to be tested is blocked according to the rotation speed of the motor, thereby realizing the detection of the temperature and humidity of the drying tube to be tested, and judging whether the drying tube to be tested is blocked according to the rotation speed of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a structural block diagram of the humidity detection tooling for the drying tube provided by the utility model.
[0018] Figure 2 This is a circuit schematic diagram of a main control module of a humidity detection tool for a drying tube provided by the utility model.
[0019] Figure 3 The utility model provides a circuit schematic diagram of the ADC acquisition module of the humidity detection tooling of the drying tube.
[0020] Figure 4 The utility model provides a circuit schematic diagram of a motor control module of a humidity detection tool for a drying tube.
[0021] Figure 5 The utility model provides a circuit schematic diagram of a display module of a humidity detection tool for a drying tube.
[0022] Figure 6 The utility model provides a circuit schematic diagram of the temperature and humidity detection module of the humidity detection tooling of the drying tube.
[0023] Description of Reference Numerals
[0024] Temperature and humidity detection module 10, ADC acquisition module 20, motor control module 30, main control module 40, chip selection unit 21, ADC conversion unit 22, display module 50, display drive unit 51, display unit 52, main control chip U1, chip selection chip U2, first resistor R1, second resistor R2, third resistor R3, fourth resistor R4, first capacitor C1, ADC chip U3, fifth resistor R5, sixth resistor R6, seventh resistor R7, eighth resistor R8, motor drive chip U4, display drive chip U5, digital tube U6, temperature and humidity sensor U7, second capacitor C2, third capacitor C3 DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0026] See also Figure 1 The humidity detection tooling of the drying tube provided by the utility model includes a temperature and humidity detection module 10, an ADC acquisition module 20, a motor control module 30 and a main control module 40, and the temperature and humidity detection module 10, the ADC acquisition module 20 and the motor control module 30 are connected to the main control module 40.
[0027] The temperature and humidity detection module 10 is used to obtain the temperature and humidity of the drying tube to be tested, and convert them into corresponding electrical signals (such as generating corresponding voltage signals). The ADC acquisition module 20 is used to convert the electrical signals output by the temperature and humidity detection module 10 into digital signals and send them to the main control module 40. The motor control module 30 is used to control the motor (which is a motor that generates negative pressure) to start so that air flows through the drying tube to be tested. The main control module 40 is used to obtain corresponding temperature data and humidity data according to the digital signals, and judge whether the drying tube to be tested is blocked according to the rotation speed of the motor. If the motor rotation speed is lower than the set value, it is considered that the drying tube to be tested is blocked.
[0028] Please continue reading Figure 1 In the humidity detection tooling of the present utility model, there are two temperature and humidity detection modules 10, one for obtaining the temperature and humidity of the drying tube to be tested, and the other for obtaining the temperature and humidity of the comparison drying tube (such as a drying tube of another brand), so as to provide a comparison of the detection data of the two. The ADC acquisition module 20 includes a chip selection unit 21 and an ADC conversion unit 22. Both temperature and humidity detection modules 10 are connected to the chip selection unit 21, and the chip selection unit 21 is connected to the ADC conversion unit 22. The chip selection unit 21 is used to select the data detected by a temperature and humidity detection module 10 and send it to the ADC conversion unit 22. The electrical signals converted by the two temperature and humidity detection modules 10 are sent to the ADC conversion unit 22 after being selected by the chip selection unit 21, or the electrical signals converted by the two temperature and humidity detection modules 10 are successively sent to the chip selection unit 21, and then converted into digital signals by the ADC conversion unit 22 and sent to the main control module 40.
[0029] Please continue and see Figure 1 The humidity detection tool of the present invention further includes a display module 50. The main control module 40 is connected to the display module 50 and is used to control the display module 50 to display temperature data and humidity data.
[0030] In this embodiment, the display module 50 includes a display driving unit 51 and display units 52 of the same number as the temperature and humidity detection module 10, and the main control module 40 is connected to each display unit 52 through the display driving unit 51. The display driving unit 51 enables the display unit 52 to display temperature data, humidity data, or cyclically display temperature data and humidity data according to the control of the main control module 40.
[0031] That is, each display unit 52 can display only temperature data or humidity data, or can display temperature data and humidity data in a loop, so that the tester can intuitively know the dehumidification capacity of the tested drying tube according to the humidity data. By testing two tested drying tubes at the same time, the tested drying tube with stronger dehumidification capacity can be intuitively displayed.
[0032] Please also read Figure 2 and Figure 3The main control module 40 includes a main control chip U1, and the chip selection unit 21 includes a chip selection chip U2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first capacitor C1. The first resistor R1 and the first capacitor C1 constitute an RC filter circuit, which is used to filter out the noise of the temperature and humidity signal collected by the temperature and humidity detection module 10 and send it to the chip selection chip U2.
[0033] The X2 pin and X3 pin of the chip select chip U2 are connected to a temperature and humidity detection module 10, the X4 pin and X5 pin of the chip select chip U2 are connected to another temperature and humidity detection module 10, the X end of the chip select chip U2 is connected to the ADC conversion unit 22 through the first resistor R1 and is also grounded through the first capacitor C1, the C pin of the chip select chip U2 is connected to the motor control module 30 through the second resistor R2, the B pin of the chip select chip U2 is connected to the motor control module 30 through the third resistor R3, and the A pin of the chip select chip U2 is connected to the motor control module 30 through the fourth resistor R4.
[0034] The main control chip U1 can adopt the MCU model STM32F103C8T6, and the chip select chip U2 can adopt the chip model CD74HC4051 PWR, which includes two inputs and one output, one of which is the temperature and humidity electrical signals input from the X2 pin and the X3 pin, and the other is the temperature and humidity electrical signals input from the X4 pin and the X5 pin. Finally, one output is selected through the X pin to be output to the ADC conversion unit 22 for analog-to-digital conversion.
[0035] Please continue reading Figure 2 and Figure 3 The ADC conversion unit 22 includes an ADC chip U3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8. The AIN0 pin of the ADC chip U3 is connected to one end of the first resistor R1 and one end of the first capacitor C1. The SCLK pin of the ADC chip U3 is connected to the PB13 pin of the main control chip U1 through the fifth resistor R5. The CS pin of the ADC chip U3 is connected to the PB12 pin of the main control chip U1 through the sixth resistor R6. The DIN pin of the ADC chip U3 is connected to the PB15 pin of the main control chip U1 through the seventh resistor R7. The DOUT pin of the ADC chip U3 is connected to the PB14 pin of the main control chip U1 through the eighth resistor R8.
[0036] The ADC chip U3 may be an integrated chip of model ADS1118, which communicates with the main control chip U1 via the SPI bus, and is used to send the converted digital signal to the main control chip U1 via the SPI bus.
[0037] Please also read Figure 4The motor control module 30 includes a motor driver chip U4. The motor driver chip U4 may be a chip of model SN74LV245ATPWP. The A7 pin and A6 pin of the motor driver chip U4 are each connected to the main control module 40 through a resistor. The B7 pin and B6 pin of the motor driver chip U4 are each connected to a motor. The motor driver chip U4 also communicates with the main control chip U1 through the SPI bus, controls the motor speed according to the control signal of the main control chip U1, and obtains the motor speed in real time. When the motor speed is lower than the preset threshold, the main control chip U1 can stop the motor and display the display unit 52.
[0038] Furthermore, the humidity detection tooling of the utility model may also include an alarm module. When the motor speed is too low, the main control chip U1 controls the alarm module to output an alarm signal to prompt the tester that the drying tube is clogged, thereby determining the service life of the drying tube.
[0039] Please also read Figure 5 The display driving unit 51 includes a display driving chip U5, and each display unit 52 includes a digital tube U6. The display driving chip U5 can use a driving chip of model STLED316SMTR, and the digital tube U6 can use a chip of KW5-404AGB.
[0040] The CLK pin and STB pin of the display driver chip U5 are connected to the main control module 40, the SEG1 / KS1 pin of the display driver chip U5 is connected to the 11th pin of the digital tube U6, the SEG2 / KS2 pin of the display driver chip U5 is connected to the 7th pin of the digital tube U6, the SEG3 / KS3 pin of the display driver chip U5 is connected to the 4th pin of the digital tube U6, the SEG4 / KS4 pin of the display driver chip U5 is connected to the 2nd pin of the digital tube U6, the SEG5 / KS5 pin of the display driver chip U5 is connected to the 1st pin of the digital tube U6, the SEG6 / KS6 pin of the display driver chip U5 is connected to the 10th pin of the digital tube U6, the SEG7 / KS7 pin of the display driver chip U5 is connected to the 5th pin of the digital tube U6, the SEG8 / KS8 pin of the display driver chip U5 is connected to the 3rd pin of the digital tube U6, the D IG2 pin of the display driver chip U5 is connected to the 12th pin of the digital tube U6, the D The IG3 pin is connected to the 9th pin of the digital tube U6, and the D IG4 pin of the display driver chip U5 is connected to the 8th pin of the digital tube U6. In this embodiment, the temperature and humidity data are cyclically displayed through the digital tube U6 for intuitive reading by the test personnel.
[0041] Please also read Figure 6The temperature and humidity detection module 10 includes a temperature and humidity sensor U7, a second capacitor C2 and a third capacitor C3. The T pin of the temperature and humidity sensor U7 is connected to the X2 pin or X4 pin of the chip select chip U2 and is also grounded through the second capacitor C2. The RH pin of the temperature and humidity sensor U7 is connected to the X3 pin or X4 pin of the chip select chip U2 and is also grounded through the third capacitor C3.
[0042] The temperature and humidity sensor U7 can use the sensor model SHT3X-ARP, which can simultaneously collect the temperature and humidity of the drying tube, and is intelligent and highly accurate.
[0043] Based on the above-mentioned drying tube humidity detection tooling, the utility model also provides a temperature and humidity detection system, which includes an air supply device, a humidifier and a humidity detection device, the humidity detection device includes a detection chamber and the above-mentioned humidity detection tooling; the drying tube to be tested and the humidifier are placed in the air supply device, the gas generated by the air supply device and the water vapor generated by the humidifier flow through the drying tube to be tested and then sent into the detection chamber, and the temperature and humidity detection module 10 of the drying tube humidity detection tooling obtains the temperature and humidity of the drying tube to be tested. Since the humidity detection tooling has been described in detail above, it will not be repeated here.
[0044] Among them, the function of the humidifier is to generate water vapor to maintain a certain humidity in the air path, and the function of the air supply device is to send the water vapor in the humidifier through the drying tube to be tested to the air cavity of the humidity detection tooling, and the temperature and humidity sensor U7 outputs the test results.
[0045] In order to better understand the technical solution of the utility model, the following Figures 1 to 6 , the practical humidity detection tooling and temperature and humidity detection system are described in detail:
[0046] Put the humidifier in working state so that the cavity (or pipeline) is filled with water vapor, and the air supply device is turned on to output the water vapor in the humidifier and flow to the humidity detection tooling after passing through the drying tube to be tested. When the water vapor passes through the detection cavity on the humidity detection tooling, the temperature and humidity sensor U7 in the cavity detects the humidity and temperature of the water vapor and generates a corresponding voltage value, which is sent to the ADC chip U3 after passing through the chip selection chip U2, and the collected electrical signal is converted into a digital signal. The ADC chip U3 communicates with the main control chip U1 through SPI. After being processed by the main control chip U1, the digital tube U6 controls the LED light to cyclically display the temperature and humidity.
[0047] The utility model uses the same digital tube U6 to cyclically display the humidity and temperature values through the control of the main control chip U1, which can save the volume of the humidity detection tooling. The humidity detection tooling realizes the basic detection function, and can intuitively distinguish the dehumidification capacity of the drying tube. The main control chip U1 records and outputs a motor drive signal with a certain duty cycle, and makes the motor work at a constant speed. Since the motor in the humidity detection tooling only needs to pump air, one end of the motor is grounded, and the other end receives the high and low PWM signals output by the main control chip U1 to control the speed of the motor. When the dehumidification capacity of the drying tube to be tested reaches the limit, the motor will stop because it cannot pump air, and the alarm method is used to warn the tester that the drying tube to be tested is blocked. And the method of detecting two drying tubes at the same time can compare the dehumidification capacity and life of the two drying tubes.
[0048] In addition, the utility model has the characteristics of simple circuit structure, stable operation, low cost, etc.
[0049] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.
Claims
1. A humidity detection tool for a drying tube, characterized in that: The invention comprises a temperature and humidity detection module, an ADC acquisition module, a motor control module and a main control module. When the main control module enables the motor control module to work and control the motor to be turned on, the temperature and humidity detection module obtains the temperature and humidity of the drying tube to be tested and converts them into corresponding electrical signals. The ADC acquisition module converts the electrical signals into digital signals and sends them to the main control module. The main control module obtains corresponding temperature data and humidity data according to the digital signals, and determines whether the drying tube to be tested is blocked according to the rotation speed of the motor.
2. The humidity detection tool for the drying tube according to claim 1, characterized in that: There are two temperature and humidity detection modules, and the ADC acquisition module includes a chip selection unit and an ADC conversion unit. The electrical signals converted by the two temperature and humidity detection modules are selected by the chip selection unit and sent to the ADC conversion unit, and then converted into digital signals by the ADC conversion unit and sent to the main control module.
3. The humidity detection tool for the drying tube according to claim 1 or 2, characterized in that: It also includes a display module, and the main control module controls the display module to display the temperature data and humidity data.
4. The humidity detection tool for the drying tube according to claim 3, characterized in that: The display module includes a display driving unit and display units having the same number as the temperature and humidity detection module. The display driving unit enables the display unit to display the temperature data, the humidity data, or cyclically display the temperature data and the humidity data according to the control of the main control module.
5. The humidity detection tool for the drying tube according to claim 2, characterized in that: The main control module includes a main control chip, and the chip select unit includes a chip select chip, a first resistor, a second resistor, a third resistor, a fourth resistor and a first capacitor. The X2 pin and the X3 pin of the chip select chip are connected to a temperature and humidity detection module, and the X4 pin and the X5 pin of the chip select chip are connected to another temperature and humidity detection module. The X end of the chip select chip is connected to the ADC conversion unit through the first resistor and is also grounded through the first capacitor. The C pin of the chip select chip is connected to the motor control module through the second resistor, the B pin of the chip select chip is connected to the motor control module through the third resistor, and the A pin of the chip select chip is connected to the motor control module through the fourth resistor.
6. The humidity detection tool for the drying tube according to claim 5, characterized in that: The ADC conversion unit includes an ADC chip, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor. The AIN0 pin of the ADC chip is connected to one end of the first resistor and one end of the first capacitor. The SCLK pin of the ADC chip is connected to the PB13 pin of the main control chip through the fifth resistor. The CS pin of the ADC chip is connected to the PB12 pin of the main control chip through the sixth resistor. The DIN pin of the ADC chip is connected to the PB15 pin of the main control chip through the seventh resistor. The DOUT pin of the ADC chip is connected to the PB14 pin of the main control chip through the eighth resistor.
7. The humidity detection tool for the drying tube according to claim 1, characterized in that: The motor control module comprises a motor drive chip, wherein the A7 pin and the A6 pin of the motor drive chip are respectively connected to the main control module via a resistor, and the B7 pin and the B6 pin of the motor drive chip are respectively connected to a motor.
8. The humidity detection tool for the drying tube according to claim 4, characterized in that: The display driving unit includes a display driving chip, each of the display units includes a digital tube, the CLK pin and the STB pin of the display driving chip are connected to the main control module, the SEG1 / KS1 pin of the display driving chip is connected to the 11th pin of the digital tube, the SEG2 / KS2 pin of the display driving chip is connected to the 7th pin of the digital tube, the SEG3 / KS3 pin of the display driving chip is connected to the 4th pin of the digital tube, the SEG4 / KS4 pin of the display driving chip is connected to the 2nd pin of the digital tube, and the S The EG5 / KS5 pin is connected to the 1st pin of the digital tube, the SEG6 / KS6 pin of the display driver chip is connected to the 10th pin of the digital tube, the SEG7 / KS7 pin of the display driver chip is connected to the 5th pin of the digital tube, the SEG8 / KS8 pin of the display driver chip is connected to the 3rd pin of the digital tube, the DIG2 pin of the display driver chip is connected to the 12th pin of the digital tube, the DIG3 pin of the display driver chip is connected to the 9th pin of the digital tube, and the DIG4 pin of the display driver chip is connected to the 8th pin of the digital tube.
9. The humidity detection tool for the drying tube according to claim 5, characterized in that: The temperature and humidity detection module includes a temperature and humidity sensor, a second capacitor and a third capacitor. The T pin of the temperature and humidity sensor is connected to the X2 pin or the X4 pin of the chip select chip and is also grounded through the second capacitor. The RH pin of the temperature and humidity sensor is connected to the X3 pin or the X4 pin of the chip select chip and is also grounded through the third capacitor.
10. A temperature and humidity detection system, characterized in that: It comprises an air supply device, a humidifier and a humidity detection device, wherein the humidity detection device comprises a detection chamber and a humidity detection tooling for the drying tube as claimed in any one of claims 1 to 9; the drying tube to be tested and the humidifier are placed in the air supply device, the gas generated by the air supply device and the water vapor generated by the humidifier flow through the drying tube to be tested and are then sent into the detection chamber, and the temperature and humidity detection module of the humidity detection tooling for the drying tube obtains the temperature and humidity of the drying tube to be tested.