Signal simulation device of respiratory monitoring module and respiratory monitoring equipment

Abstract

The utility model discloses a signal simulation device of a respiration monitoring module and respiration monitoring equipment, a simulation air pump function, a simulation light source function and an atmospheric pressure simulation function are integrated in one device and are controlled by a single chip microcomputer of the respiration monitoring module, connection of a plurality of accessory board cards can be omitted only by connecting a parameter mainboard of a respiration control-releasing module, and the signal simulation device is simple in structure and convenient to use. The technical problems that more and more accessory board cards of the respiratory monitoring module are provided, more complex connection among the board cards is provided, more complex assembly needs to be carried out before a module is tested, the efficiency of building a test environment and manually debugging detection parameters is low, and the cost is high are solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment detection, and in particular to a signal simulation device for a respiratory monitoring module and a respiratory monitoring device. Background Art

[0002] The development of medical level constantly requires the technical update of medical equipment, among which the monitoring of respiratory monitoring module becomes more and more important. The most important thing about respiratory monitoring module is parameter collection and analysis. Before the respiratory monitoring module is put into use, it is necessary to carefully test the signals of each part of the module, and it can be put into use only after passing the test. However, with the increase of respiratory gas parameters and higher requirements, the number of accessory boards of respiratory monitoring module increases, and the connection between boards becomes more and more complicated. Before testing a module, more complicated assembly is required, and there are technical problems such as low efficiency and high cost in setting up the test environment and manually debugging the test parameters. Summary of the invention

[0003] The present application provides a signal simulation device and respiratory monitoring equipment for a respiratory monitoring module, which solves the technical problems that the respiratory monitoring module has an increasing number of accessory boards and the connections between the boards are becoming more complicated, and a more complicated assembly is required before testing a module, and the construction of the test environment and manual debugging of detection parameters are inefficient and costly.

[0004] In view of this, the first aspect of the present application provides a signal simulation device for a respiratory monitoring module, the device comprising:

[0005] Simulated air pump module 101, air pump driving circuit 102, simulated light source module 103, light source driving circuit 104, signal output circuit 105, simulated atmospheric pressure module 106, air pressure block proportional valve control circuit 107, first connecting seat J1 and second connecting seat J2;

[0006] The air pump driving circuit 102 is connected to the first input terminal and the first output terminal of the analog air pump module 101 through the first input pin and the second input pin of the first connecting socket J1;

[0007] The light source driving circuit 104 is connected to the second input end of the analog light source module 103 through the third input pin of the first connecting socket J1, and the second output end of the analog light source module 103 is connected to the single chip computer 100 of the respiratory monitoring module through the fourth input pin of the first connecting socket J1;

[0008] The air pressure block proportional valve control circuit 107 is connected to the air pressure block control terminal of the simulated atmospheric pressure module 106 via the fifth input pin of the second connection socket J2;

[0009] The signal input ends of the air pump driving circuit 102, the light source driving circuit 104, the air pressure block proportional valve control circuit 107, the signal output end of the signal output circuit 105, and the signal output end of the atmospheric pressure sensor provided in the simulated atmospheric pressure module 106 are respectively connected to the single chip microcomputer 100 of the respiratory monitoring module.

[0010] Optionally, the analog air pump module is specifically two first resistors R1 connected in parallel.

[0011] Optionally, the air pump driving circuit specifically includes:

[0012] The first end of the second resistor R2 is connected to the first signal output end of the single chip computer 100 of the respiratory monitoring module, and the second end of the second resistor R2 is respectively connected to the G pole of the first MOS tube Q1 and the first end of the third resistor R3;

[0013] The second end of the third resistor R3 is respectively connected to the first end of the first capacitor C1, the fourth resistor R4 and the first end of the fifth resistor R5;

[0014] The second ends of the first capacitor C1, the fourth resistor R4 and the fifth resistor R5 are respectively connected to the S pole of the first MOS transistor Q1 and the first end of the sixth resistor R6;

[0015] The second end of the sixth resistor R6 is connected to the first signal input end of the single chip microcomputer 100 of the respiratory monitoring module through the signal output circuit 105;

[0016] The D pole of the first MOS transistor Q1 is respectively connected to the anode of the first diode D1, the first end of the second capacitor C2 and the second end of the third connection socket J3;

[0017] The first end of the third connection socket J3 is respectively connected to the cathode of the first diode D1 and the second end of the second capacitor C2, and the first end of the third connection socket J3 is respectively grounded through the third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5, and connected to the first power supply voltage through the inductor L;

[0018] The first end of the third connection socket J3 is connected to the first input end of the analog air pump module through the first input pin of the first connection socket, and the second end of the third connection socket J3 is connected to the first output end of the analog air pump module through the second input pin of the first connection socket.

[0019] Optionally, the analog light source module is specifically a plurality of seventh resistors R7 connected in parallel.

[0020] Optionally, the light source driving circuit specifically includes:

[0021] The in-phase input terminal of the first operational amplifier OPA1 is connected to the second signal output terminal of the single-chip microcomputer 100 of the respiratory monitoring module, the reverse input terminal of the first operational amplifier OPA1 is connected to the power output terminal of the single-chip microcomputer 100 of the respiratory monitoring module through the eighth resistor R8, the reverse input terminal of the first operational amplifier OPA1 is also connected to the base of the transistor Q3 through the eighteenth capacitor C18, the ninth resistor R9 and the twentieth resistor R20 in sequence, the output terminal of the first operational amplifier OPA1 is connected to the base of the transistor Q3 through the twentieth resistor R20, the negative pole of the power supply of the first operational amplifier OPA1 is grounded, and the positive pole of the power supply is connected to the second power supply voltage and grounded through the eighth capacitor C8;

[0022] The collector of the transistor Q3 is respectively connected to the twenty-first resistor R21, the first end of the tenth resistor R10 and the negative electrode of the RS resistor;

[0023] The second ends of the twenty-first resistor R21 and the tenth resistor R10 are grounded through the ninth capacitor C9 and the tenth capacitor C10, and are connected to the second power supply voltage and the positive electrode of the RS resistor;

[0024] The emitter of the transistor Q3 is connected to the second input end of the analog light source module through the third input pin of the first connecting socket, and is grounded through the eleventh resistor R11 and the twelfth resistor R12 in sequence, and is connected to VIN through the eleventh resistor R11.

[0025] Optionally, the signal output circuit specifically includes:

[0026] A fifth operational amplifier QPA5, wherein a non-inverting input terminal of the fifth operational amplifier QPA5 is connected to a second terminal of a sixth resistor R6 of the air pump driving circuit 102;

[0027] The inverting input terminal of the fifth operational amplifier QPA5 is connected to the output terminal;

[0028] The output terminal of the fifth operational amplifier QPA5 is connected to the first signal input terminal of the single chip microcomputer 100 of the respiratory monitoring module through the twenty-second resistor R22.

[0029] Optionally, the atmospheric pressure simulation module specifically includes:

[0030] Housing, air pipe, air pressure block and atmospheric pressure sensor;

[0031] The housing is fixedly arranged on the circuit board to form a closed space, and the atmospheric pressure sensor is arranged in the closed space;

[0032] The air pressure block is connected to the outer shell through an air pipe, so that the air pressure block can evacuate or inflate the enclosed space;

[0033] The control end of the air pressure block is connected to the air pressure block proportional valve control circuit via the fifth input pin of the second connecting seat.

[0034] Optionally, the pneumatic block proportional valve control circuit specifically includes:

[0035] A first voltage follower unit, a proportional valve control unit and a second voltage follower circuit;

[0036] The input terminal of the first voltage follower unit is connected to the third signal output terminal of the single chip computer 100;

[0037] An output terminal of the first voltage follower unit is connected to a first input terminal of the proportional valve control unit;

[0038] The input end of the second voltage follower circuit is respectively connected to the second input end and the first output end of the proportional valve control unit, and the output end of the second voltage follower circuit outputs a flow control valve proportional control analog signal.

[0039] Optionally, the first voltage follower unit specifically includes:

[0040] A first end of the twelfth resistor R12 is connected to the third signal output end of the single chip microcomputer 100 of the respiratory monitoring module, and a second end of the twelfth resistor R12 is grounded through an eleventh capacitor C11 and connected to the non-inverting input end of the second operational amplifier OPA2;

[0041] The inverting input terminal of the second operational amplifier OPA2 is connected to the output terminal, the negative electrode of the power supply of the second operational amplifier OPA2 is grounded, the positive electrode of the power supply is connected to the third power supply voltage, and the positive electrode of the power supply is grounded through the twelfth capacitor C12;

[0042] The output end of the second operational amplifier OPA2 is connected to the same line input end of the third operational amplifier OPA3 through a thirteenth resistor R13, and the thirteenth resistor R13 is grounded through a fourteenth resistor R14 and a thirteenth capacitor C13;

[0043] The proportional valve control unit specifically includes:

[0044] The inverting input terminal of the third operational amplifier OPA3 is connected to the in-phase input terminal of the fourth operational amplifier OPA4 through the fifteenth resistor R15, the negative electrode of the power supply of the third operational amplifier OPA3 is grounded, the positive electrode of the power supply is connected to the third power supply voltage, and the positive electrode of the power supply is grounded through the fourteenth capacitor C14;

[0045] The output end of the third operational amplifier OPA3 is connected to the G electrode of the second MOS tube Q2 through the sixteenth resistor R16, and the sixteenth resistor R16 is also grounded through the seventeenth resistor R17;

[0046] The D pole of the second MOS tube Q2 is respectively connected to the anode of the second diode D2, the first end of the fifteenth capacitor C15 and the fifth input pin of the second connection base;

[0047] The cathode of the second diode D2 and the second end of the fifteenth capacitor C15 are grounded through the sixteenth capacitor C16 and the seventeenth capacitor C17 respectively, and the cathode of the second diode D2 and the second end of the fifteenth capacitor C15 are connected to the fourth power supply voltage;

[0048] The second voltage follower unit specifically includes:

[0049] The non-inverting input terminal of the fourth operational amplifier OPA4 is connected to the S pole of the second MOS tube Q2, and the non-inverting input terminal is grounded through the eighteenth resistor R18;

[0050] The output end of the fourth operational amplifier OPA4 outputs a flow control valve proportional control analog signal through the nineteenth resistor R19.

[0051] The second aspect of the present application further provides a respiratory monitoring device, comprising a single chip microcomputer 100 and a signal simulation device of the respiratory monitoring module described in any one of the first aspects of the present application.

[0052] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0053] In the present application, a signal simulation device and a respiratory monitoring equipment for a respiratory monitoring module are provided, which integrate a simulated air pump, a simulated light source and a simulated atmospheric pressure function into one device, which is controlled by a single-chip microcomputer of the respiratory monitoring module. It only needs to be connected to the parameter mainboard of the respiratory control module, and the connection of multiple accessory boards can be omitted. This solves the technical problems that the number of accessory boards of the respiratory monitoring module is increasing, the connection between the boards is becoming more and more complicated, and more complicated assembly is required before testing a module. There are also low efficiency and high cost in setting up the test environment and manually debugging the detection parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a circuit framework diagram of a signal simulation device for a respiratory monitoring module in an embodiment of the present application;

[0055] Figure 2 This is the electrical diagram of the simulated air pump module;

[0056] Figure 3 It is the electrical diagram of the air pump drive circuit;

[0057] Figure 4 An electrical diagram for simulating a light source module;

[0058] Figure 5 An electrical diagram of the light source driving circuit;

[0059] Figure 6 An electrical diagram of the signal output circuit;

[0060] Figure 7 This is the electrical diagram of the pneumatic block proportional valve control circuit. DETAILED DESCRIPTION

[0061] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0062] The present application designs a signal simulation device for a respiratory monitoring module, which solves the technical problems that the number of accessory boards of the respiratory monitoring module is increasing, the connections between the boards are becoming more and more complicated, and more complicated assembly is required before testing a module, and the setting up of the test environment and manual debugging of detection parameters are inefficient and costly.

[0063] For easier understanding, see Figure 1 , Figure 1 : is a circuit framework diagram of a signal simulation device of a respiratory monitoring module in an embodiment of the present application, such as Figure 1 As shown, specifically:

[0064] Simulated air pump module 101, air pump driving circuit 102, simulated light source module 103, light source driving circuit 104, signal output circuit 105, simulated atmospheric pressure module 106, air pressure block proportional valve control circuit 107, first connecting seat J1 and second connecting seat J2;

[0065] The air pump driving circuit 102 is connected to the first input terminal and the first output terminal of the analog air pump module 101 through the first input pin and the second input pin of the first connecting socket J1;

[0066] The light source driving circuit 104 is connected to the second input end of the analog light source module 103 through the third input pin of the first connecting socket J1, and the second output end of the analog light source module 103 is connected to the single chip computer 100 of the respiratory monitoring module through the fourth input pin of the first connecting socket J1;

[0067] The air pressure block proportional valve control circuit 107 is connected to the air pressure block control terminal of the simulated atmospheric pressure module 106 via the fifth input pin of the second connection socket J2;

[0068] The signal input ends of the air pump driving circuit 102, the light source driving circuit 104, the air pressure block proportional valve control circuit 107, the signal output end of the signal output circuit 105, and the signal output end of the atmospheric pressure sensor provided in the simulated atmospheric pressure module 106 are respectively connected to the single chip microcomputer 100 of the respiratory monitoring module.

[0069] Furthermore, if Figure 2 As shown, Figure 2 The electrical diagram of the simulated air pump module 101 is shown. The simulated air pump module 101 is specifically two first resistors R1 connected in parallel.

[0070] Furthermore, if Figure 3 As shown, Figure 3 : is an electrical diagram of the air pump drive circuit 102, and the air pump drive circuit 102 specifically includes:

[0071] The first end of the second resistor R2 is connected to the first signal output end of the single chip computer 100 of the respiratory monitoring module, and the second end of the second resistor R2 is respectively connected to the G pole of the first MOS tube Q1 and the first end of the third resistor R3;

[0072] The second end of the third resistor R3 is respectively connected to the first end of the first capacitor C1, the fourth resistor R4 and the first end of the fifth resistor R5;

[0073] The second ends of the first capacitor C1, the fourth resistor R4 and the fifth resistor R5 are respectively connected to the S pole of the first MOS transistor Q1 and the first end of the sixth resistor R6;

[0074] The second end of the sixth resistor R6 is connected to the first signal input end of the single chip microcomputer 100 of the respiratory monitoring module through the signal output circuit 105;

[0075] The D pole of the first MOS transistor Q1 is respectively connected to the anode of the first diode D1, the first end of the second capacitor C2 and the second end of the third connection socket J3;

[0076] The first end of the third connection socket J3 is respectively connected to the cathode of the first diode D1 and the second end of the second capacitor C2, and the first end of the third connection socket J3 is respectively grounded through the third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5, and connected to the first power supply voltage through the inductor L;

[0077] The first end of the third connection socket J3 is connected to the first input end of the analog air pump module 101 through the first input pin of the first connection socket, and the second end of the third connection socket J3 is connected to the first output end of the analog air pump module 101 through the second input pin of the first connection socket J1.

[0078] It should be noted that the respiratory monitoring module needs to be connected to the air pump during debugging, and then detect parameters such as the air pump drive signal and pump current. The device of the present application can save the step of connecting the air pump. The device board adopts the method of simulating the air pump, that is, simulating the air pump work by the method of parallel resistance. The single-chip microcomputer of the respiratory monitoring module will generate an air pump drive signal, and the air pump drive signal passes through the simulated air pump to drive the "air pump" to work, generate the same current as the original air pump, and then send it to the single-chip microcomputer of the respiratory monitoring module to detect the pump current.

[0079] The simulated air pump is designed on the device board. The respiratory monitoring module board was originally connected to both ends of the air pump, but now it is connected to both ends of the simulated air pump.

[0080] The simulated air pump is composed of two resistors with appropriate resistance values ​​connected in parallel and is arranged on the main board of the simulation device. PUMPJ1_1 and PUMPJ1_2 are driving signals passing through the simulated air pump to make the simulated air pump work.

[0081] The air pump driving circuit 102 is on the respiratory monitoring module mainboard, and is connected to the two ends of the analog air pump seat PUMPJ1_1 and PUMPJ1_2 through the two ends of the third connecting seat J3. PUMP PWM is the air pump PWM wave, which changes the speed of the first MOS tube Q1 switch by changing the duty cycle, thereby changing the power of the air pump. PUMP_CIR is the air pump current, which is sent to the single-chip microcomputer 100 for detection.

[0082] Furthermore, if Figure 4 As shown, Figure 4 To simulate the electrical diagram of the light source module 103 , the simulated light source module 103 is specifically a plurality of seventh resistors R7 connected in parallel.

[0083] Furthermore, if Figure 5 As shown, Figure 5 : is an electrical diagram of the light source driving circuit 104, and the light source driving circuit 104 specifically includes:

[0084] The in-phase input terminal of the first operational amplifier OPA1 is connected to the second signal output terminal of the single-chip microcomputer 100 of the respiratory monitoring module, the reverse input terminal of the first operational amplifier OPA1 is connected to the power output terminal of the single-chip microcomputer 100 of the respiratory monitoring module through the eighth resistor R8, the reverse input terminal of the first operational amplifier OPA1 is also connected to the base of the transistor Q3 through the eighteenth capacitor C18, the ninth resistor R9 and the twentieth resistor R20 in sequence, the output terminal of the first operational amplifier OPA1 is connected to the base of the transistor Q3 through the twentieth resistor R20, the negative pole of the power supply of the first operational amplifier OPA1 is grounded, and the positive pole of the power supply is connected to the second power supply voltage and grounded through the eighth capacitor C8;

[0085] The collector of the transistor Q3 is respectively connected to the twenty-first resistor R21, the first end of the tenth resistor R10 and the negative electrode of the RS resistor;

[0086] The second ends of the twenty-first resistor R21 and the tenth resistor R10 are grounded through the ninth capacitor C9 and the tenth capacitor C10, and are connected to the second power supply voltage and the positive electrode of the RS resistor;

[0087] The emitter of the transistor Q3 is connected to the second input end of the analog light source module through the third input pin of the first connecting socket, and is grounded through the eleventh resistor R11 and the twelfth resistor R12 in sequence, and is connected to VIN through the eleventh resistor R11.

[0088] Furthermore, if Figure 6 As shown, Figure 6 : is an electrical diagram of the signal output circuit 105, and the signal output circuit 105 specifically includes:

[0089] A fifth operational amplifier QPA5, wherein a non-inverting input terminal of the fifth operational amplifier QPA5 is connected to a second terminal of a sixth resistor R6 of the air pump driving circuit 102;

[0090] The inverting input terminal of the fifth operational amplifier QPA5 is connected to the output terminal;

[0091] The output terminal of the fifth operational amplifier QPA5 is connected to the first signal input terminal of the single chip microcomputer 100 of the respiratory monitoring module through the twenty-second resistor R22.

[0092] It should be noted that PUMP_CIR is the air pump current detection signal. By detecting the voltage across the fourth resistor R4 / / fifth resistor R5 and sending it to the PUMP_CIR_AD port of the microcontroller 100 for detection via the fifth operational amplifier QPA5, the current signal flowing through the air pump circuit can be detected.

[0093] The light source driving circuit is on the main board of the respiratory monitoring module. Vset is the light source driving signal. The light source driving current VCC_IR is generated through the operational amplifier and the switching circuit to start the analog light source working.

[0094] Furthermore, the simulated atmospheric pressure module 106 specifically includes:

[0095] Housing, air pipe, air pressure block and atmospheric pressure sensor;

[0096] The housing is fixedly arranged on the circuit board to form a closed space, and the atmospheric pressure sensor is arranged in the closed space;

[0097] The air pressure block is connected to the outer shell through an air pipe, so that the air pressure block can evacuate or inflate the enclosed space;

[0098] The control end of the air pressure block is connected to the air pressure block proportional valve control circuit via the fifth input pin of the second connecting seat.

[0099] It should be noted that the working environment of the respiratory monitoring module is in the atmospheric environment, and the relevant parameters of the respiratory monitoring module have a corresponding relationship with the ambient atmospheric pressure. When testing the respiratory gas parameters, it is necessary to control the atmospheric pressure more accurately to calculate the corresponding gas parameters. The general respiratory monitoring module is completed in an environmental chamber. The environmental chamber refers to a large device that can completely hold the entire respiratory monitoring machine. The internal pressure, humidity, etc. can be changed in a controllable manner. If a closed environment can be made in the respiratory monitoring module to simulate the external atmospheric environment, the operation of the environmental chamber can be omitted.

[0100] By setting a mini closed environment on the mainboard of the simulation detection device, the device is tightly fitted with the mainboard, and the atmospheric pressure sensor is placed in it, so that the overall airtightness is good. The closed environment is composed of a hard shell that fits tightly against the board, a silicone hose, an air pressure block, and several silicone rings connecting various parts.

[0101] The implementation process is that when the air pressure block is not working, the atmosphere in the closed environment is connected to the external atmospheric environment, and the monitoring module measures the gas parameters under the external atmospheric pressure environment;

[0102] When the air pressure block is working, the closed environment is evacuated and inflated through the silicone hose, and the power of the air circuit block is controlled by the program. The working time of the air pressure block is calculated by calculating the volume of the corresponding evacuated / inflated gas, thereby calculating the difference in atmospheric pressure. Finally, the difference is subtracted from the external atmospheric pressure value to obtain the current atmospheric pressure value in the closed environment.

[0103] Furthermore, if Figure 7 As shown, Figure 7 : is an electrical diagram of the pneumatic block proportional valve control circuit 107, and the pneumatic block proportional valve control circuit 107 specifically includes:

[0104] A first voltage follower unit, a proportional valve control unit and a second voltage follower circuit;

[0105] The input terminal of the first voltage follower unit is connected to the third signal output terminal of the single chip computer 100;

[0106] An output terminal of the first voltage follower unit is connected to a first input terminal of the proportional valve control unit;

[0107] The input end of the second voltage follower circuit is respectively connected to the second input end and the first output end of the proportional valve control unit, and the output end of the second voltage follower circuit outputs a flow control valve proportional control analog signal.

[0108] Furthermore, the first voltage follower unit specifically includes:

[0109] A first end of the twelfth resistor R12 is connected to the third signal output end of the single chip microcomputer 100 of the respiratory monitoring module, and a second end of the twelfth resistor R12 is grounded through an eleventh capacitor C11 and connected to the non-inverting input end of the second operational amplifier OPA2;

[0110] The inverting input terminal of the second operational amplifier OPA2 is connected to the output terminal, the negative electrode of the power supply of the second operational amplifier OPA2 is grounded, the positive electrode of the power supply is connected to the third power supply voltage, and the positive electrode of the power supply is grounded through the twelfth capacitor C12;

[0111] The output end of the second operational amplifier OPA2 is connected to the same line input end of the third operational amplifier OPA3 through a thirteenth resistor R13, and the thirteenth resistor R13 is grounded through a fourteenth resistor R14 and a thirteenth capacitor C13;

[0112] The proportional valve control unit specifically includes:

[0113] The inverting input terminal of the third operational amplifier OPA3 is connected to the in-phase input terminal of the fourth operational amplifier OPA4 through the fifteenth resistor R15, the negative electrode of the power supply of the third operational amplifier OPA3 is grounded, the positive electrode of the power supply is connected to the third power supply voltage, and the positive electrode of the power supply is grounded through the fourteenth capacitor C14;

[0114] The output end of the third operational amplifier OPA3 is connected to the G electrode of the second MOS tube Q2 through the sixteenth resistor R16, and the sixteenth resistor R16 is also grounded through the seventeenth resistor R17;

[0115] The D pole of the second MOS tube Q2 is respectively connected to the anode of the second diode D2, the first end of the fifteenth capacitor C15 and the fifth input pin of the second connection base;

[0116] The cathode of the second diode D2 and the second end of the fifteenth capacitor C15 are grounded through the sixteenth capacitor C16 and the seventeenth capacitor C17 respectively, and the cathode of the second diode D2 and the second end of the fifteenth capacitor C15 are connected to the fourth power supply voltage;

[0117] The second voltage follower unit specifically includes:

[0118] The non-inverting input terminal of the fourth operational amplifier OPA4 is connected to the S pole of the second MOS tube Q2, and the non-inverting input terminal is grounded through the eighteenth resistor R18;

[0119] The output end of the fourth operational amplifier OPA4 outputs a flow control valve proportional control analog signal through the nineteenth resistor R19.

[0120] It should be noted that the CONTROL_PROPORTION_VALVE1 signal is a control voltage signal. After voltage following, the voltage is divided to the input voltage range of the third operational amplifier OPA3. The output voltage of the third operational amplifier OPA3 controls the output current of the second MOS tube Q2IRFZ48N, and the output current controls the operation of the proportional valve connected between 12V_T and PROPORTION_VALVE1. Since the input voltage of the second MOS tube Q2 is proportional to the output current, and the output current is proportional to the rate of the proportional valve, there is a relevant calculation formula for the proportional valve rate and the extracted air volume.

[0121] Therefore, by controlling the input voltage, the speed of the proportional valve can be controlled, and then by calculating with the working time, the corresponding change in the atmospheric pressure value can be obtained.

[0122] The second embodiment of the present application further provides a respiratory monitoring device, comprising a single chip microcomputer 100 and a signal simulation device of the respiratory monitoring module described in any one of the first embodiments of the present application.

[0123] The embodiment of the present application provides a signal simulation device and respiratory monitoring equipment for a respiratory monitoring module, which integrates a simulated air pump, a simulated light source, and a simulated atmospheric pressure function into one device, which is controlled by a single-chip microcomputer of the respiratory monitoring module. It only needs to be connected to the parameter mainboard of the respiratory control module, and the connection of multiple accessory boards can be omitted. This solves the technical problems that the number of accessory boards of the respiratory monitoring module is increasing, the connection between the boards is becoming more and more complicated, and more complicated assembly is required before testing a module. There are also low efficiency and high cost in setting up the test environment and manually debugging the detection parameters.

[0124] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these 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 application.

Claims

1. A signal simulation device for a respiratory monitoring module, characterized in that: include: A simulated air pump module (101), an air pump driving circuit (102), a simulated light source module (103), a light source driving circuit (104), a signal output circuit (105), a simulated atmospheric pressure module (106), an air pressure block proportional valve control circuit (107), a first connecting seat (J1), and a second connecting seat (J2); The air pump driving circuit (102) is connected to the first input end and the first output end of the analog air pump module (101) via the first input pin and the second input pin of the first connecting socket (J1); The light source driving circuit (104) is connected to the second input end of the analog light source module (103) via the third input pin of the first connecting socket (J1), and the second output end of the analog light source module (103) is connected to the single-chip computer (100) of the respiratory monitoring module via the fourth input pin of the first connecting socket (J1); The air pressure block proportional valve control circuit (107) is connected to the air pressure block control terminal of the simulated atmospheric pressure module (106) via the fifth input pin of the second connection socket (J2); The signal input ends of the air pump driving circuit (102), the light source driving circuit (104), the air pressure block proportional valve control circuit (107), the signal output end of the signal output circuit (105), and the signal output end of the atmospheric pressure sensor provided in the simulated atmospheric pressure module (106) are respectively connected to the single chip microcomputer (100) of the respiratory monitoring module.

2. The signal simulation device of the respiratory monitoring module according to claim 1, characterized in that: The simulated air pump module (101) is specifically two first resistors (R1) connected in parallel.

3. The signal simulation device of the respiratory monitoring module according to claim 2, characterized in that: The air pump driving circuit (102) specifically comprises: A first end of a second resistor (R2) is connected to a first signal output end of the single chip microcomputer (100) of a respiratory monitoring module, and a second end of the second resistor (R2) is respectively connected to a G pole of a first MOS tube (Q1) and a first end of a third resistor (R3); The second end of the third resistor (R3) is respectively connected to the first end of the first capacitor (C1), the fourth resistor (R4) and the first end of the fifth resistor (R5); The second ends of the first capacitor (C1), the fourth resistor (R4) and the fifth resistor (R5) are respectively connected to the S pole of the first MOS tube (Q1) and the first end of the sixth resistor (R6); The second end of the sixth resistor (R6) is connected to the first signal input end of the single chip microcomputer (100) of the respiratory monitoring module through the signal output circuit (105); The D pole of the first MOS tube (Q1) is respectively connected to the anode of the first diode (D1), the first end of the second capacitor (C2) and the second end of the third connection socket (J3); The first end of the third connection base (J3) is respectively connected to the cathode of the first diode (D1) and the second end of the second capacitor (C2), and the first end of the third connection base (J3) is respectively grounded through the third capacitor (C3), the fourth capacitor (C4) and the fifth capacitor (C5), and connected to the first power supply voltage through the inductor (L); The first end of the third connection socket (J3) is connected to the first input end of the analog air pump module (101) via the first input pin of the first connection socket, and the second end of the third connection socket (J3) is connected to the first output end of the analog air pump module (101) via the second input pin of the first connection socket (J1).

4. The signal simulation device of the respiratory monitoring module according to claim 1, characterized in that: The analog light source module (103) is specifically a plurality of seventh resistors (R7) connected in parallel.

5. The signal simulation device of the respiratory monitoring module according to claim 4, characterized in that: The light source driving circuit (104) specifically comprises: The in-phase input terminal of the first operational amplifier (OPA1) is connected to the second signal output terminal of the single chip microcomputer (100) of the respiratory monitoring module, the reverse input terminal of the first operational amplifier (OPA1) is connected to the power output terminal of the single chip microcomputer (100) of the respiratory monitoring module through an eighth resistor (R8), the reverse input terminal of the first operational amplifier (OPA1) is also connected to the base of the transistor (Q3) through an eighteenth capacitor (C18), a ninth resistor (R9) and a twentieth resistor (R20) in sequence, the output terminal of the first operational amplifier (OPA1) is connected to the base of the transistor (Q3) through the twentieth resistor (R20), the negative electrode of the power supply of the first operational amplifier (OPA1) is grounded, and the positive electrode of the power supply is connected to the second power supply voltage and is grounded through the eighth capacitor (C8); The collector of the transistor (Q3) is respectively connected to the first end of the twenty-first resistor (R21), the tenth resistor (R10) and the negative electrode of the RS resistor; The second ends of the twenty-first resistor (R21) and the tenth resistor (R10) are grounded through the ninth capacitor (C9) and the tenth capacitor (C10), and are connected to the second power supply voltage and the positive electrode of the RS resistor; The emitter of the transistor (Q3) is connected to the second input end of the analog light source module through the third input pin of the first connecting socket, and is grounded through the eleventh resistor (R11) and the twelfth resistor (R12) in sequence, and is connected to VIN through the eleventh resistor (R11).

6. The signal simulation device of the respiratory monitoring module according to claim 5, characterized in that: The signal output circuit (105) specifically comprises: a fifth operational amplifier (QPA5), wherein a non-inverting input terminal of the fifth operational amplifier (QPA5) is connected to a second end of a sixth resistor (R6) of the air pump drive circuit (102); The inverting input terminal of the fifth operational amplifier (QPA5) is connected to the output terminal; The output end of the fifth operational amplifier (QPA5) is connected to the first signal input end of the single chip microcomputer (100) of the respiratory monitoring module via a twenty-second resistor (R22).

7. The signal simulation device of the respiratory monitoring module according to claim 1, characterized in that: The simulated atmospheric pressure module (106) specifically comprises: Housing, air pipe, air pressure block and atmospheric pressure sensor; The housing is fixedly arranged on the circuit board and forms a closed space, and the atmospheric pressure sensor is arranged in the closed space; The air pressure block is connected to the housing through the air pipe, so that the air pressure block can evacuate or inflate the enclosed space; The control end of the air pressure block is connected to the air pressure block proportional valve control circuit (107) via the fifth input pin of the second connection socket (J2).

8. The signal simulation device of the respiratory monitoring module according to claim 7, characterized in that: The pneumatic block proportional valve control circuit (107) specifically comprises: A first voltage follower unit, a proportional valve control unit and a second voltage follower circuit; The input terminal of the first voltage follower unit is connected to the third signal output terminal of the single chip computer (100); The output terminal of the first voltage follower unit is connected to the first input terminal of the proportional valve control unit; The input end of the second voltage follower circuit is connected to the second input end and the first output end of the proportional valve control unit respectively, and the output end of the second voltage follower circuit outputs a flow control valve proportional control analog signal.

9. The signal simulation device of the respiratory monitoring module according to claim 8, characterized in that: The first voltage following unit specifically includes: A first end of a twelfth resistor (R12) is connected to a third signal output end of the single chip microcomputer (100) of a respiratory monitoring module, and a second end of the twelfth resistor (R12) is grounded via an eleventh capacitor (C11) and connected to a non-inverting input end of a second operational amplifier (OPA2); The inverting input terminal of the second operational amplifier (OPA2) is connected to the output terminal, the negative electrode of the power supply of the second operational amplifier (OPA2) is grounded, the positive electrode of the power supply is connected to the third power supply voltage, and the positive electrode of the power supply is grounded through a twelfth capacitor (C12); The output end of the second operational amplifier (OPA2) is connected to the same-row input end of the third operational amplifier (OPA3) through a thirteenth resistor (R13), and the thirteenth resistor (R13) is grounded through a fourteenth resistor (R14) and a thirteenth capacitor (C13); The proportional valve control unit specifically comprises: The inverting input terminal of the third operational amplifier (OPA3) is connected to the non-inverting input terminal of the fourth operational amplifier (OPA4) through a fifteenth resistor (R15), the negative electrode of the power supply of the third operational amplifier (OPA3) is grounded, the positive electrode of the power supply is connected to the third power supply voltage, and the positive electrode of the power supply is grounded through a fourteenth capacitor (C14); The output end of the third operational amplifier (OPA3) is connected to the G pole of the second MOS tube (Q2) through a sixteenth resistor (R16), and the sixteenth resistor (R16) is also grounded through a seventeenth resistor (R17); The D pole of the second MOS tube (Q2) is respectively connected to the anode of the second diode (D2), the first end of the fifteenth capacitor (C15) and the fifth input pin of the second connection base; The cathode of the second diode (D2) and the second end of the fifteenth capacitor (C15) are grounded through the sixteenth capacitor (C16) and the seventeenth capacitor (C17), respectively, and the cathode of the second diode (D2) and the second end of the fifteenth capacitor (C15) are connected to a fourth power supply voltage; The second voltage following unit specifically includes: The non-inverting input terminal of the fourth operational amplifier (OPA4) is connected to the S pole of the second MOS tube (Q2), and the non-inverting input terminal is grounded through an eighteenth resistor (R18); The output end of the fourth operational amplifier (OPA4) outputs a flow control valve proportional control analog signal through a nineteenth resistor (R19).

10. A respiratory monitoring device, characterized in that: The invention comprises a single chip microcomputer (100) and a signal simulation device of a respiratory monitoring module as claimed in any one of claims 1 to 9.

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