Breathing machine control circuit and breathing machine equipment

Abstract

The utility model relates to the technical field of electronic control, in particular to a breathing machine control circuit and breathing machine equipment. The breathing machine control circuit comprises the breathing machine control module and the microphone module, the microphone module is connected with the breathing machine control module, medical staff can conveniently input various control instructions to the breathing machine through the microphone module, and the breathing machine control module controls the breathing machine to execute related instructions after receiving the instructions. Medical staff directly control the breathing machine through voice, manual close-range contact type operation is not needed, the control process is more efficient and convenient, and operation of the medical staff is greatly facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control, in particular to a ventilator control circuit and ventilator equipment. Background Art

[0002] A ventilator is a medical device that assists or replaces a patient's breathing function and maintains the patient's life by providing a mixture of oxygen and air.

[0003] In clinical practice, medical staff need to be close to the ventilator and manually operate it. If the ventilator is far away from the medical staff, they cannot operate it at close range. Even in the process of emergency medical treatment, manual control of the ventilator may delay the treatment of the patient and cause unpredictable damage. Utility Model Content

[0004] The embodiments of the utility model provide a ventilator control circuit and a ventilator device to solve the problem in the prior art that the ventilator needs to be controlled at a close distance, which causes inconvenient device operation.

[0005] In a first aspect, the utility model provides a ventilator control circuit, comprising: a ventilator control module and a microphone module, wherein a data output end of the microphone module is connected to an input end of the ventilator control module, a clock end of the microphone module is connected to an output end of the ventilator control module, and the microphone module is used to output a ventilator voice control signal from a data output end to the ventilator control module according to a clock signal output from the output end of the ventilator control module.

[0006] In one embodiment, a processor is provided in the ventilator control module, and the microphone module includes a first digital microphone chip, wherein a data output end of the first digital microphone chip is connected to an input end of the processor, and a clock end of the first digital microphone chip is connected to an output end of the processor.

[0007] In one embodiment, the microphone module further includes a second digital microphone chip, a data output terminal of the second digital microphone chip is connected to an input terminal of the processor, and a clock terminal of the second digital microphone chip is connected to an output terminal of the processor.

[0008] In one embodiment, the microphone module also includes: a first resistance branch and a second resistance branch, the first resistance branch is arranged in series between the data output end of the first digital microphone chip and the input end of the processor, and the second resistance branch is arranged in series between the clock end of the first digital microphone chip and the output end of the processor.

[0009] In one embodiment, the microphone module also includes: a third resistance branch and a fourth resistance branch, the third resistance branch is arranged in series between the data output end of the second digital microphone chip and the input end of the processor, and the fourth resistance branch is arranged in series between the clock end of the second digital microphone chip and the output end of the processor.

[0010] In one embodiment, the microphone module further includes: a first filter circuit, wherein an input end of the first filter circuit is used to connect to a first power supply, and an output end of the first filter circuit is connected to a power input end of the first digital microphone chip.

[0011] In one embodiment, the microphone module further includes: a second filter circuit, wherein an input end of the second filter circuit is used to connect to a first power supply, and an output end of the second filter circuit is connected to a power input end of the second digital microphone chip.

[0012] In one embodiment, the first filtering circuit includes: a first inductor and a first capacitor, one end of the first inductor is used to connect to a first power supply, the other end of the first inductor is connected to a power input end of the first digital microphone chip, the other end of the first inductor is connected to one end of the first capacitor, and the other end of the first capacitor is grounded.

[0013] In one embodiment, the second filtering circuit includes: a second inductor and a second capacitor, one end of the second inductor is used to connect to the first power supply, the other end of the second inductor is connected to the power input end of the second digital microphone chip, the other end of the second inductor is connected to one end of the second capacitor, and the other end of the second capacitor is grounded.

[0014] In a second aspect, the present embodiment provides a ventilator device, which includes a control host and an air source component, wherein the control host is provided with a ventilator control circuit as described in the first aspect and its improvement.

[0015] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0016] The ventilator control circuit of the utility model includes a ventilator control module and a microphone module. The microphone module is connected to the ventilator control module, which is convenient for medical staff to input various control instructions to the ventilator through the microphone module. After receiving the instructions, the ventilator control module controls the ventilator to execute the relevant instructions. Medical staff can directly control the ventilator through voice without manual close contact operation. The control process is more efficient and convenient, which greatly facilitates the operation of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the module structure of a ventilator control circuit provided by an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the module structure of a ventilator control circuit provided by an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the module structure of a ventilator control circuit provided by an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the module structure of a ventilator control circuit provided by an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the module structure of a ventilator control circuit provided by an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the module structure of a ventilator control circuit provided by an embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of the module structure of a ventilator control circuit provided by an embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the connection of a first filter circuit provided by an embodiment of the utility model;

[0026] Fig. 9 This is a schematic diagram of the connection of a first filter circuit provided by an embodiment of the utility model;

[0027] Fig.10 This is a circuit connection diagram of a microphone module provided in one embodiment of the utility model;

[0028] Among them, 1. ventilator control module, 2. microphone module, 11. processor, 21. first digital microphone chip, 22. second digital microphone chip, 23. first resistor branch, 24. second resistor branch, 25. third resistor branch, 26. fourth resistor branch, 27. first filter circuit, 28. second filter circuit. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by 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.

[0030] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0033] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0034] In one embodiment, if Figure 1As shown, a module structure schematic diagram of a ventilator control circuit is provided, including: a ventilator control module 1 and a microphone module 2, wherein the data output end of the microphone module 2 is connected to the input end of the ventilator control module 1, the clock end of the microphone module 2 is connected to the output end of the ventilator control module 1, and the microphone module 2 is used to output a ventilator voice control signal from the data output end to the ventilator control module 1 according to the clock signal output from the output end of the ventilator control module 1.

[0035] The microphone module 2 in this embodiment can be any type of microphone chip, which can be a digital microphone, an analog microphone, a condenser microphone, or a piezoelectric microphone. Preferably, the microphone in this embodiment is a digital microphone, the clock end of the microphone module 2 is the Clock end of the digital microphone, and the data output end of the microphone module 2 is the DATA end of the digital microphone.

[0036] The ventilator voice control signal includes the control of the working mode and / or the control of the working parameters. The working mode includes but is not limited to suction mode, rescue mode or ventilation mode. The working parameters include but are not limited to: pressure, respiratory rate, etc. Preferably, the ventilator voice control signal can also control the shutdown and startup of the ventilator.

[0037] The working process of the above-mentioned ventilator control circuit is: the microphone module 2 controls the ventilator voice control signal input to the ventilator control module 1 according to the clock signal output by the ventilator control module 1, and the ventilator control module 1 controls the ventilator to execute relevant instructions after receiving the signal.

[0038] In the ventilator control circuit of this embodiment, the clock signal is used to synchronize the data transmission between the microphone module and the ventilator control module. The medical staff can directly control the ventilator through voice without manual close contact operation. The control process is more efficient and convenient, which greatly facilitates the operation of the medical staff.

[0039] In one embodiment, if Figure 2 As shown, a schematic diagram of the module structure of a ventilator control circuit is provided. Figure 1 On the basis of the ventilator control circuit shown, a processor 11 is provided in the ventilator control module 1, and the microphone module 2 includes a first digital microphone chip 21, the data output end of the first digital microphone chip 21 is connected to the input end of the processor 11, and the clock end of the first digital microphone chip 21 is connected to the output end of the processor 11.

[0040] The processor 11 in this embodiment can be any kind of processor, such as MCU, DSP, MPU, etc. Preferably, the processor 11 in this embodiment is MCU.

[0041] The working process of the above-mentioned ventilator control circuit is as follows: the first digital microphone chip 21 controls the ventilator voice control signal input to the processor 11 according to the clock signal output by the processor 11, and the processor 11 controls the ventilator to execute relevant instructions after receiving the signal.

[0042] In the ventilator control circuit of this embodiment, the microphone module 2 can be configured as a first digital microphone chip. The digital microphone chip has the advantages of small size, high performance, low power consumption, high sensitivity, wide frequency response range, low noise, etc., which greatly improves the stability of the circuit.

[0043] In one embodiment, if Figure 3 As shown, a schematic diagram of the module structure of a ventilator control circuit is provided. Figure 2 On the basis of the ventilator control circuit shown, the microphone module 2 also includes a second digital microphone chip 22, the data output end of the second digital microphone chip 22 is connected to the input end of the processor 11, and the clock end of the second digital microphone chip 22 is connected to the output end of the processor 11.

[0044] Preferably, the selection pin of the first digital microphone chip 21 is grounded, the selection pin of the second digital microphone chip 22 is connected to the first power supply, the two digital microphone chips share a common clock terminal and data output terminal, and each digital microphone chip is configured to generate its own output at different edges of the clock signal.

[0045] It is understandable that the ventilator voice control signal collected by the first digital microphone chip 21 and the ventilator voice control signal collected by the second digital microphone chip 22 are the same ventilator voice control signal.

[0046] The working process of the above-mentioned ventilator control circuit is: when the clock signal is a rising edge signal, the first digital microphone chip 21 outputs the ventilator voice control signal to the processor 11, and when the clock signal is a falling edge signal, the second digital microphone chip 22 outputs the ventilator voice control signal to the processor 11.

[0047] In the ventilator control circuit of this embodiment, two digital microphone chips share a clock terminal and a data terminal. Each digital microphone chip is configured to generate its own output at different edges of the clock signal. The outputs of the two microphone chips can be synchronized with each other to ensure that the data of each channel can be captured at the same time.

[0048] In one embodiment, if Figure 4 As shown, a schematic diagram of the module structure of a ventilator control circuit is provided. Figure 2Based on the ventilator control circuit shown, the microphone module 2 also includes: a first resistor branch 23 and a second resistor branch 24, the first resistor branch 23 is connected in series between the data output end of the first digital microphone chip 21 and the input end of the processor 11, and the second resistor branch 24 is connected in series between the clock end of the first digital microphone chip 21 and the output end of the processor 11.

[0049] It can be understood that the first resistance branch 23 in the present embodiment may have only one resistor connected in series or may have multiple resistors, the second resistance branch 24 in the present embodiment may have only one resistor connected in series or may have multiple resistors, and the structures of the first resistance branch 23 and the second resistance branch 24 in the present embodiment may be the same or different. Preferably, the first resistance branch 23 and the second resistance branch 24 have the same structure, and only one resistor is connected in series in the first resistance branch 23 and the second resistance branch 24.

[0050] The working process of the above-mentioned ventilator control circuit is as follows: the clock signal output by the processor 11 flows to the first digital microphone chip 21 through the second resistor branch 24, and the ventilator voice control signal output by the first digital microphone chip 21 flows to the processor 11 through the first resistor branch 23.

[0051] The ventilator control circuit of this embodiment can suppress interference on the signal on the path, prevent electrostatic damage, and improve signal stability and anti-interference ability by providing the first resistance branch 23 and the second resistance branch 24.

[0052] In one embodiment, if Figure 5 As shown, a schematic diagram of the module structure of a ventilator control circuit is provided. Figure 3 Based on the ventilator control circuit shown, the microphone module 2 also includes: a third resistor branch 25 and a fourth resistor branch 26, the third resistor branch 25 is connected in series between the data output end of the second digital microphone chip 22 and the input end of the processor 11, and the fourth resistor branch 26 is connected in series between the clock end of the second digital microphone chip 22 and the output end of the processor 11.

[0053] It can be understood that the third resistor branch 25 in the present embodiment may have only one resistor connected in series or may have multiple resistors, the fourth resistor branch 26 in the present embodiment may have only one resistor connected in series or may have multiple resistors, and the structures of the third resistor branch 25 and the fourth resistor branch 26 in the present embodiment may be the same or different. Preferably, the third resistor branch 25 and the fourth resistor branch 26 have the same structure, and only one resistor is connected in series in the third resistor branch 25 and the fourth resistor branch 26.

[0054] The working process of the above-mentioned ventilator control circuit is as follows: the clock signal output by the processor 11 flows to the second digital microphone chip 22 through the fourth resistor branch 26 , and the data signal output by the second digital microphone chip 22 flows to the processor 11 through the third resistor branch 25 .

[0055] The ventilator control circuit of this embodiment can suppress interference, prevent electrostatic damage, and improve signal stability and anti-interference ability by providing the third resistor branch 25 and the fourth resistor branch 26.

[0056] In one embodiment, if Figure 6 As shown, a schematic diagram of the module structure of a ventilator control circuit is provided. Figure 4 On the basis of the ventilator control circuit shown, the microphone module 2 further includes: a first filter circuit 27, the input end of the first filter circuit 27 is used to connect to the first power supply, and the output end of the first filter circuit 27 is connected to the power input end of the first digital microphone chip 21.

[0057] It can be understood that the first filtering circuit 27 in this embodiment is any kind of filtering circuit. Only a resistor can be set in the circuit for filtering, or only a capacitor can be set in the circuit for filtering, or a resistor and a capacitor can be set in the circuit for RC filtering, or a resistor, a capacitor and an inductor can be set in the circuit for RCL filtering. Preferably, a resistor, a capacitor and an inductor are set in the circuit for RCL filtering.

[0058] The working process of the above-mentioned ventilator control circuit is as follows: the first power signal output by the first power supply is filtered by the first filtering circuit 27, and then flows to the power input end of the first digital microphone chip 21 to provide a power signal for the first digital microphone chip 21.

[0059] In the ventilator control circuit of this embodiment, a first filter circuit 27 is provided between the first power supply and the power input terminal of the first digital microphone chip 21. The first filter circuit 27 can filter and stabilize the first power supply signal to improve the reliability and stability of the circuit.

[0060] In one embodiment, if Figure 7 As shown, a schematic diagram of the module structure of a ventilator control circuit is provided. Figure 5 On the basis of the ventilator control circuit shown, the microphone module 2 also includes: a second filter circuit 28, the input end of the second filter circuit 28 is used to connect to the first power supply, and the output end of the second filter circuit 28 is connected to the power input end of the second digital microphone chip 22.

[0061] It can be understood that the second filter circuit 28 in this embodiment can be any type of filter circuit, and can be set to the same structure as the first filter circuit 27, or can be set to a different structure from the first filter circuit 27. Preferably, the second filter circuit 28 has the same structure as the first filter circuit 27.

[0062] The working process of the above-mentioned ventilator control circuit is as follows: the first power signal output by the first power supply is filtered by the second filtering circuit 28, and then flows to the power input end of the second digital microphone chip 22 to provide a power signal for the second digital microphone chip 22.

[0063] In the ventilator control circuit of this embodiment, a second filter circuit 28 is provided between the first power supply and the power input terminal of the second digital microphone chip 22. The second filter circuit 28 can filter and stabilize the first power supply signal to improve the reliability and stability of the circuit.

[0064] In one embodiment, if Figure 8 As shown, a circuit connection diagram of a circuit is provided. Figure 6 Based on the ventilator control circuit shown, the first filter circuit 27 includes: a first inductor L1 and a first capacitor C1, one end of the first inductor L1 is used to connect to the first power supply, the other end of the first inductor L1 is connected to the power input end of the first digital microphone chip 21, the other end of the first inductor L1 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.

[0065] It is understandable that the first power supply can be set to any value according to actual requirements. In this embodiment, the first power supply is set to 3.3V.

[0066] The working process of the above-mentioned ventilator control circuit is as follows: the first power signal 3.3V output by the first power supply is stabilized by the first inductor L1, filtered by the first capacitor C1, and then flows to the power input end of the first digital microphone chip 21 to provide a power signal for the first digital microphone chip 21.

[0067] The ventilator control circuit of this embodiment is provided with a first inductor L1 to prevent the change of current in the first power supply signal, smooth the first power supply voltage, and ensure that the first digital microphone chip 21 can obtain stable power supply; the first capacitor C1 is provided to store charge and adjust the signal frequency, smooth the power supply voltage, and filter out the high-frequency signal in the first power supply signal at the same time, so as to avoid the high-frequency signal from interfering with the circuit, thereby ensuring the stability and reliability of the circuit.

[0068] In one embodiment, if Fig. 9 As shown, a schematic diagram of the module structure of a signal acquisition circuit is provided. Figure 7Based on the ventilator control circuit shown, the second filtering circuit 28 includes: a second inductor L2 and a second capacitor C2, one end of the second inductor L2 is used to connect to the first power supply, the other end of the second inductor L2 is connected to the power input end of the second digital microphone chip 22, the other end of the second inductor L2 is connected to one end of the second capacitor C2, and the other end of the second capacitor C2 is grounded.

[0069] It is understandable that the first power supply can be set to any value according to actual requirements. In this embodiment, the first power supply is set to 3.3V.

[0070] The working process of the above-mentioned ventilator control circuit is as follows: the first power signal output by the first power supply is stabilized by the second inductor L2, filtered by the second capacitor C2, and then flows to the power input end of the second digital microphone chip 22 to provide a power signal for the second digital microphone chip 22.

[0071] The ventilator control circuit of this embodiment is provided with a second inductor L2 to prevent the change of current in the first power supply signal, smooth the first power supply voltage, and ensure that the second digital microphone chip 22 can obtain stable power supply; the second capacitor C2 is provided to store charge and adjust the signal frequency, smooth the power supply voltage, and filter out the high-frequency signal in the first power supply signal at the same time, so as to avoid the high-frequency signal from interfering with the circuit, thereby ensuring the stability and reliability of the circuit.

[0072] In one embodiment, if Fig.10 As shown, a circuit connection diagram of a microphone module is provided, including a ventilator control module 1 and a microphone module 2, wherein the ventilator control module 1 is provided with a processor 11, and the microphone module 2 includes: a first digital microphone chip 21, a second digital microphone chip 22, a first resistor branch 23, a second resistor branch 24, a third resistor branch 25, a fourth resistor branch 26, a first filter circuit 27 and a second filter circuit 28;

[0073] The input end of the first filter circuit 27 is used to connect to the first power supply, the output end of the first filter circuit 27 is connected to the power input end of the first digital microphone chip 21, the input end of the second filter circuit 28 is used to connect to the first power supply, the output end of the second filter circuit 28 is connected to the power input end of the second digital microphone chip 22, the data output end of the first digital microphone chip 21 is connected to one end of the first resistor branch 23, the other end of the first resistor branch 23 is connected to the input end of the processor 11, the clock end of the first digital microphone chip 21 is connected to one end of the second resistor branch 24, the other end of the second resistor branch 24 is connected to the output end of the processor, the data output end of the second digital microphone chip 22 is connected to one end of the third resistor branch 25, the other end of the third resistor branch 25 is connected to the input end of the processor 11, the clock end of the second digital microphone chip 22 is connected to one end of the fourth resistor branch 26, and the other end of the fourth resistor branch 26 is connected to the output end of the processor 11.

[0074] On the basis of the above-mentioned ventilator control circuit, the working process of the above-mentioned ventilator control circuit is as follows: the first power signal output by the first power supply is filtered by the first filtering circuit 27, and then flows to the power input end of the first digital microphone chip 21 to power the first digital microphone chip 21; the first power signal output by the first power supply is filtered by the second filtering circuit 28, and then flows to the power input end of the second digital microphone chip 22 to power the second digital microphone chip 22; the clock signal output by the processor 11 flows to the first digital microphone chip 21 through the second resistor branch 24; the clock signal output by the processor 11 flows to the second digital microphone chip 22 through the fourth resistor branch 26; when the clock signal is a rising edge signal, the first digital microphone chip 21 outputs a data ventilator voice control signal through the first resistor branch 23 and inputs it into the processor 11; when the clock signal is a falling edge signal, the second digital microphone chip 22 outputs a data ventilator voice control signal through the third resistor branch 25 to the processor 11.

[0075] The ventilator control circuit of the present embodiment is provided with two digital microphone chips in the microphone module 2, and the two digital microphone chips share a clock terminal and a data terminal, and each digital microphone chip is configured to generate respective outputs at different edges of the clock signal, and the outputs of the two microphone chips can maintain a mutually synchronous design, ensuring that the data of each channel can be captured at the same time. By providing a first resistor branch 23, a second resistor branch 24, a third resistor branch 25, and a second resistor branch 26, interference to the signal on the path can be suppressed, electrostatic damage can be prevented, and the stability and anti-interference ability of the signal can be improved. A first filter circuit 27 is provided between the first power supply and the power input terminal of the first digital microphone chip 21, and a second filter circuit 28 is provided between the first power supply and the power input terminal of the second digital microphone chip 22. The first filter circuit 27 and the second filter circuit 28 can filter and stabilize the first power supply signal, thereby improving the stability and reliability of the circuit.

[0076] In one embodiment, a ventilator device is provided, which includes a control host and an air source component, and the control host is provided with the ventilator control circuit mentioned in any of the above embodiments.

[0077] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A ventilator control circuit, characterized in that: include: A ventilator control module and a microphone module, wherein the data output end of the microphone module is connected to the input end of the ventilator control module, the clock end of the microphone module is connected to the output end of the ventilator control module, and the microphone module is used to output a ventilator voice control signal from the data output end to the ventilator control module according to the clock signal output from the output end of the ventilator control module.

2. The ventilator control circuit according to claim 1, characterized in that: The ventilator control module is provided with a processor, and the microphone module includes a first digital microphone chip, wherein a data output end of the first digital microphone chip is connected to an input end of the processor, and a clock end of the first digital microphone chip is connected to an output end of the processor.

3. The ventilator control circuit according to claim 2, characterized in that: The microphone module further includes a second digital microphone chip, a data output terminal of the second digital microphone chip is connected to an input terminal of the processor, and a clock terminal of the second digital microphone chip is connected to an output terminal of the processor.

4. The ventilator control circuit according to claim 2, characterized in that: The microphone module also includes: a first resistor branch and a second resistor branch, the first resistor branch is arranged in series between the data output end of the first digital microphone chip and the input end of the processor, and the second resistor branch is arranged in series between the clock end of the first digital microphone chip and the output end of the processor.

5. The ventilator control circuit according to claim 3, characterized in that: The microphone module also includes: a third resistance branch and a fourth resistance branch, the third resistance branch is arranged in series between the data output end of the second digital microphone chip and the input end of the processor, and the fourth resistance branch is arranged in series between the clock end of the second digital microphone chip and the output end of the processor.

6. The ventilator control circuit according to claim 4, characterized in that: The microphone module further includes: a first filter circuit, wherein an input end of the first filter circuit is used to connect to a first power supply, and an output end of the first filter circuit is connected to a power input end of the first digital microphone chip.

7. The ventilator control circuit according to claim 5, characterized in that: The microphone module further includes: a second filter circuit, wherein an input end of the second filter circuit is used to connect to a first power supply, and an output end of the second filter circuit is connected to a power input end of the second digital microphone chip.

8. The ventilator control circuit according to claim 6, characterized in that: The first filtering circuit includes: a first inductor and a first capacitor, one end of the first inductor is used to connect to a first power supply, the other end of the first inductor is connected to a power input end of the first digital microphone chip, the other end of the first inductor is connected to one end of the first capacitor, and the other end of the first capacitor is grounded.

9. The ventilator control circuit according to claim 7, characterized in that: The second filtering circuit includes: a second inductor and a second capacitor, one end of the second inductor is used to connect to the first power supply, the other end of the second inductor is connected to the power input end of the second digital microphone chip, the other end of the second inductor is connected to one end of the second capacitor, and the other end of the second capacitor is grounded.

10. A ventilator device, comprising a control host and an air source component, characterized in that: The control host is provided with a ventilator control circuit as described in any one of claims 1-9.

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