CN110221029A - A kind of simulator and analogy method of real human body respiratory - Google Patents
A kind of simulator and analogy method of real human body respiratory Download PDFInfo
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Abstract
The invention discloses the simulators and analogy method of a kind of real human body respiratory, comprising: electric power driving module, for the component power supply to need power supply in the simulator；Parameter adjustment module, for inputting the adjustment signal of respiratory rate and respiratory capacity；Embedded micro-control module, the adjustment signal for being inputted according to parameter adjustment module adjusts the pwm control signal and relay control signal of output, for exporting real-time respiratory rate and respiratory capacity；PWM control module, for exporting the control signal of air pump motor；Display, for receiving and showing the real-time respiratory rate and respiratory capacity of embedded micro-control module output；Air pump realizes that the real human body respiratory of predetermined respiratory rate and respiratory capacity is simulated for the revolving speed and steering according to air pump motor.The device of the invention can simulate human body respiration feature；It can be used under analog detection particle contamination substance environment, human body microenvironment and respiratory tract endoparticle pollutant suck exposure concentrations.
Description
Technical field
The invention belongs to breathe analogue technique field and breath exposure studying technological domain, it is related to a kind of real human body and exhales
It is drawn through the simulator and analogy method of journey.
Background technique
With the continuous social and economic development, the air quality problems of many countries are on the rise in the world, seriously endanger
Human health；Wherein, the disease incidence of respiratory disease is high and becomes worse.
People is the main body of environment, and people not only can be the receptor of dispersion of pollutants in environment, it is also possible to pollution sources；Human body
Heat dissipation can also have an impact the propagation in human peripheral flow field and pollutant, thus when carrying out correlative study necessary someone ginseng
With.But in the research process in some environmental correclation fields, experimental study is carried out using true man and is angularly considered from healthy and safe
It is worthless, for example, in the research process for carrying out breathing simulation and breath exposure.
To sum up, it needs to develop a kind of device for simulating human normal respiratory for replacing true man, to assess breathing
Exposure level.
Summary of the invention
The purpose of the present invention is to provide the simulators and analogy method of a kind of real human body respiratory, on solving
It states.The device of the invention can simulate human body respiration feature；It can be used for analog detection particle contamination
Under substance environment, human body microenvironment and respiratory tract endoparticle pollutant suck exposure concentrations.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of simulator of real human body respiratory, comprising:
Electric power driving module, for the component power supply to need power supply in the simulator；
Parameter adjustment module, for inputting the adjustment signal of respiratory rate and respiratory capacity；
Embedded micro-control module, the adjustment signal for being inputted according to parameter adjustment module adjust the PWM control of output
Signal and relay control signal, while for exporting real-time respiratory rate and respiratory capacity；
PWM control module, the control of the pwm control signal output air pump motor for being exported according to embedded micro-control module
Signal processed adjusts revolving speed and the steering of air pump motor；
Display, for receiving and showing the real-time respiratory rate and respiratory capacity of embedded micro-control module output；
Air pump, for realizing that the real human body of predetermined respiratory rate and respiratory capacity is exhaled according to the revolving speed and steering of air pump motor
Inhale process simulation；The air pump is communicated with air intake duct and exhaust tube, and the first solenoid valve is provided on air intake duct, is arranged on exhaust tube
There is second solenoid valve；
Relay, relay control signal for being exported according to embedded micro-control module realize the first solenoid valve and the
The on-off of two solenoid valves；Wherein, when the first solenoid valve is connected to, second solenoid valve is disconnected；When second solenoid valve is connected to, the first electromagnetism
Valve disconnects.
A further improvement of the present invention is that the electric power driving module includes: adapter and voltage reduction module；
The adapter supplies voltage reduction module, parameter regulation for connecting external voltage, the adapter output 24V voltage
Module, air pump motor, the first solenoid valve and second solenoid valve；
Voltage reduction module exports 3.3V voltage and supplies embedded micro-control module, display and relay.
A further improvement of the present invention is that embedded micro-control module includes: microprocessor STM32 single-chip microcontroller and its control
Driving circuit processed；Control driving circuit is connected with PWM control module, display and parameter adjustment module respectively；For driving
Display is also used for the output of control signal for driving the regulating key in parameter adjustment module.
A further improvement of the present invention is that single-chip microcontroller is STM32F103 single-chip microcontroller, it is built-in using Cortex-M3 kernel
Timer can produce multi-channel PWM output and multiple operate two-way GPIO port；It passes through GPIO pin and parameter regulation
The data letter of the pwm signal receiving terminal and GPIO control terminal, display in regulating key, PWM control module in module
Number input terminal and relay are connected.
A further improvement of the present invention is that parameter adjustment module includes parameter regulation plate；
The regulating key of parameter regulation plate includes: that respiratory rate adds that key a, respiratory rate subtract key b, respiratory capacity adds key
C, respiratory capacity subtracts key d, runs/stop key e and simulator master switch f；
Respiratory rate add key a and respiratory rate subtract key b to embedded micro-control module send respiratory rate increase or
Reduce order；
Respiratory capacity adds keycSubtract key d with respiratory capacity and increases or decreases life to embedded micro-control module transmission respiratory capacity
It enables；
Key commands adjust output to the pwm control signal of PWM control module to embedded micro-control module based on the received.
A further improvement of the present invention is that embedded micro-control module based on the received give by key commands adjusting output
The specific steps of the pwm control signal of PWM control module include:
When step 1, by key pressing, signal feeds back to embedded micro-control module, make two GPIO mouthfuls according to control logic
Table exports corresponding high level or low level；Meanwhile it exports pwm control signal to PWM by the output port of microcontroller and controlling
Molding block；Wherein, control logic table are as follows:
| IN1 | IN2 | ENA | Export result |
| 0 | 0 | X | Brake |
| 1 | 1 | X | Vacantly |
| 1 | 0 | PWM | Rotate forward speed regulation |
| 0 | 1 | PWM | Reversion speed regulation |
| 1 | 0 | 1 | It rotates forward at full speed |
| 0 | 1 | 1 | It inverts at full speed |
；
Step 2, light-coupled isolation is carried out by PWM control module and signal amplifies, for believing pwm signal and logic control
Number stablize and be not driven circuit interference, to control revolving speed and the steering of air pump motor to realize respiratory capacity and respiratory rate
It adjusts.
A further improvement of the present invention is that the range that respiratory rate is adjusted is 10-20 time/min, the increase of each key or
The respiratory rate of reduction is 0.5 time/min；The range that respiratory capacity is adjusted is 6-12L/min, and what each key increased or decreased exhales
Pipette is 0.5L/min.
A further improvement of the present invention is that PWM control module includes: L298N direct current motor drive circuit, light-coupled isolation
Circuit, under-voltage current foldback circuit；Wherein, L298N direct current motor drive circuit is used to export embedded micro-control module
Signal amplifies, to control the speed regulation and positive and negative rotation of motor；Optical coupling isolation circuit is for eliminating the driving of L298N direct current generator
Interference of the circuit to embedded micro-control module input signal；Under-voltage current foldback circuit is for preventing transient high-current from burning mould
Block.
A further improvement of the present invention is that, further includes: integral box；
Embedded type control module, electric power driving module, PWM control module, air pump, the first solenoid valve and second solenoid valve are equal
It is fixedly mounted in integral box to be opened/closed；
Display and parameter adjustment module are fixedly mounted on the outer wall of integral box.
A kind of analogy method of real human body respiratory, based on the above-mentioned simulator of the present invention, comprising the following steps:
S1 inputs the adjustment signal of respiratory rate and respiratory capacity by parameter adjustment module；
S2 is controlled by embedded micro-control module according to the PWM that the adjustment signal that parameter adjustment module inputs adjusts output
Signal and relay control signal processed, while for exporting real-time respiratory rate and respiratory capacity；
S3 exports air pump motor according to the pwm control signal that embedded micro-control module exports by PWM control module
Signal is controlled, revolving speed and the steering of air pump motor are adjusted；
S4 receives by display and shows the real-time respiratory rate and respiratory capacity of embedded micro-control module output；
S5 realizes the real human body of predetermined respiratory rate and respiratory capacity by air pump according to the revolving speed of air pump motor and steering
Respiratory simulation；In simulation process, the relay control signal that is exported by relay according to embedded micro-control module
Realize the on-off of the first solenoid valve and second solenoid valve；Wherein, when the first solenoid valve is connected to, second solenoid valve is disconnected；Second electricity
When magnet valve is connected to, the first solenoid valve is disconnected.
Compared with prior art, the invention has the following advantages:
The device of the invention is a kind of breathing simulator based on micro control system, by respiratory rate and breathing
The simulation to human body respiration feature is realized in the accurate control of amount；It can be used for analog detection particle contamination substance environment servant's body micro-loop
Border and respiratory tract endoparticle pollutant suck exposure concentrations；Testing result can be to judge that particle contamination substance environment exhales real human body
The influence for inhaling road provides relatively reliable data basis and theoretical direction.Specifically, breathing simulator of the invention can simulate very
The characteristics of real human body respiration, it is able to satisfy the respiratory rate and respiratory capacity of real human body, the gas flow of breathing meets sine gauge
Curve is restrained, the mode of original constant flow can be replaced in this way, human body respiration process can be reacted, more really so as to true
It reacts human body and sucks air event, react the pollutant exposure level in human body respiration area；In addition people also can more really be reacted
Body aspiration contamination object propagation law.The device of the invention has used high performance microcontroller and advanced PWM control technology, control
The respiratory of human body is realized in the positive and negative rotation and speed regulation of air pump processed, controls to adjust that precision is high, stability is good, and response is fast.
Human body respiration analogy method of the invention can be overcome based on human body respiration simulator of the invention using original
Human body respiration device brought by experimental error, experiment condition can be improved to the actual response degree of real working condition, can be accurate
Reaction human body respiration area Pollution exposure is horizontal and the propagation law of human body respiration pollutant, can in solving environment pollutant
Propagation problem is improved and is played a significant role in air quality.
Detailed description of the invention
Fig. 1 is a kind of entirety of real human body respiratory simulator based on micro control system of the embodiment of the present invention
Structural schematic diagram；
Fig. 2 is power supply in a kind of real human body respiratory simulator based on micro control system of the embodiment of the present invention
The electrical schematic of module；
Fig. 3 be the embodiment of the present invention a kind of real human body respiratory simulator based on micro control system in detect
With control signal system schematic illustration；
Fig. 4 is the circuit diagram of PWM control module in the embodiment of the present invention；
In figs. 1 to 3,1, embedded micro-control module；2, electric power driving module；3, PWM control module；4, air pump；
5, the first solenoid valve；6, second solenoid valve；7, display；9, parameter regulation plate；10, relay.
Specific embodiment
Invention is further described in detail in the following with reference to the drawings and specific embodiments.
Referring to Fig. 1, a kind of real human body respiratory simulator based on micro control system of the embodiment of the present invention,
It include: embedded micro-control module 1, electric power driving module 2, PWM control module 3, air pump 4, display 7 and parameter regulation plate 9.
Embedded micro-control module 1 includes microprocessor STM32 single-chip microcontroller and its control driving circuit；It controls driving circuit and PWM is controlled
Molding block 3, display 7 are connected with parameter regulation plate 9, for driving the regulating key in display 7 and parameter regulation plate 9
A, b, c, d, e, f, be also used for coordinating each modular assembly, detection feedback signal and to its processing, control the output of signal.Specifically
, embedded micro-control module 1 includes STM32 single-chip microcontroller, reset circuit, crystal oscillating circuit and GPIO port output circuit；Monolithic
Machine is STM32F103 single-chip microcontroller, and using Cortex-M3 kernel, built-in timer can produce the PWM output on up to 4 tunnels, and
A considerable number of operates two-way GPIO port, while meeting the display in the present invention, PWM output, regulating key and relay
The driving and demand for control of device；Embedded micro-control module runs control, including output logic letter for the program of whole device
Number, control relay, driving display and to its transmit real-time parameter data, output original PWM signals pulse, to parameter regulation
Feedback is made in the adjusting of plate.It is attached between microprocessor and peripheral circuit using optical coupling isolation circuit, for eliminating forceful electric power band
The interference come, the very stability of high-transmission signal.
Electric power driving module 2 and embedded micro-control module 1, PWM control module 3, air pump 4, the first solenoid valve 5, second
Solenoid valve 6, display 7 and parameter regulation plate 9 connect, for providing the electricity of operating electrical characteristics match therewith for each modular assembly
Source input, i.e., for embedded micro-control module, PWM control module, air pump, the first solenoid valve, second solenoid valve, display
The power input of operating electrical characteristics match therewith is provided with parameter regulation plate.
PWM control module 3 is connect with embedded micro-control module 1 and air pump 4, for embedded micro-control module 1 is defeated
Original PWM signals out are converted, to realize the brake of air pump motor, positive and negative rotation and speed regulation.
Air pump 4 and electric power driving module 2, PWM control module 3, the first solenoid valve 5, second solenoid valve 6 and output precision phase
Connection, for as the power source exhaled with air-breathing, delivery hose A realization to be exhaled, and hose B realizes air-breathing.
Display 7 is connect with embedded micro-control module 1 and electric power driving module 2, is driven by embedded micro-control module
With display data input, when for showing the value of the real-time respiration parameter of MCU and adjust respiration parameter by parameter regulation plate, ginseng
Several real-time changes.
Parameter regulation plate 9 includes that respiratory rate adds key a, respiratory rate to subtract key b, respiratory capacity adds key c, respiratory capacity to subtract
Key d, run/stop key e and device master switch f；Parameter regulation plate 9 and embedded micro-control module 1 and power drives mould
Block 2 connects, and for respiratory rate and respiratory capacity to be adjusted, and is fed back to embedded micro-control module 1.Specifically,
Using the key in parameter regulation plate, the important parameter of respiratory rate and respiratory capacity the two human body respirations can be adjusted,
It can also realize the operation and stopping of device, air pump motor is in vacant state at this time, and adjusting feeds back to embedded micro-control module,
Processing through STM32 single-chip microcontroller, adjustment signal export the operation of adjusting and device that parameter is realized to each operating component.
Referring to Fig. 2, in the embodiment of the present invention, it is straight that the input power of electric power driving module 2 by adapter is converted to 24V
Regulated power supply is flowed, it, can be directly by 24V pressure stabilizing electricity for air pump 4, the first solenoid valve 5, second solenoid valve 6 and parameter regulation plate 9
Source power supply；And for embedded micro-control module 1, display 7 and relay 10, then it is powered by a power supply the decompression built in module 2
Module is depressurized to 3.3V, can power to above-mentioned modular assembly.
Referring to Fig. 3, embedded micro-control module 1 is the core of whole device control system, received as signal, processing
And the release of control signal.Specifically, the STM32 single-chip microcontroller in embedded micro-control module 1 passes through GPIO pin and parameter tune
Save a, b, c, d, e, f key in plate 9, pwm signal receiving terminal and GPIO control terminal, display in PWM control module 3
7 data signal input and relay 10 is connected.
The respiratory rate of parameter regulation plate 9 adds key a, respiratory rate to subtract key b by GPIO mouthfuls to embedded microcontroller
Module 1 sends respiratory rate and increases or decreases order, and the range that respiratory rate is adjusted is 10-20 times/min, and each key increases
Or the respiratory rate of reduction is 0.5 time/min, and adjustment process keeps adjustment process more intuitive by 7 real-time display of display.
The respiratory capacity of parameter regulation plate 9 add key c, respiratory capacity subtract key d by GPIO mouthfuls to embedded micro-control module 1 send breathe
Amount increases or decreases order, and the range that respiratory capacity is adjusted is 6-12L/min, and the respiratory capacity that each key increases or decreases is
0.5L/min, and adjustment process passes through 7 real-time display of display.It is embedded in STM32 single-chip microcontroller according to demand for control compiler, it should
Program realizes the hardware driving and real-time display control data transmission of display 7, receives pin by the serial ports of MCU and receives data,
It is transmitted to LCD screen, realizes real time monitoring.Specifically, program includes to ginseng by compiled burning program to STM32 single-chip microcontroller
The judgement of number adjustable plate key feedback is believed with processing code, the driving of LCD display and realtime curve code, pwm pulse
Number generation and air pump motor logic control code and GPIO port operation code so that all fortune of whole device
The orderly work of row component.
Key commands adjust output to the pwm control signal of PWM control module to embedded micro-control module based on the received
Specific steps include: step 1, when by key pressing, signal feeds back to embedded micro-control module, passes through the control of preparatory burning
Program (has disclosed), makes corresponding two GPIO mouthfuls of corresponding high level of output or low level, specific control logic referring to
Table 1, while export pwm control signal to PWM control module by the output port of microcontroller；Step 2, it is controlled by PWM
Module carries out light-coupled isolation and signal amplification, it is ensured that and pwm signal and logic control signal are stable and are not driven circuit interference, from
And revolving speed and the steering of air pump motor are controlled to realize the adjusting of respiratory capacity and respiratory rate.
For example, control program description: writing program using modular thought, what is connect with STM32F103 single-chip microcontroller is outer
Connecing hardware is key, display, relay, and using the function built in single-chip microcontroller has the channel CH2 of timer, TIM4 that PWM occurs
Signal, serial communication.Modularly write key scan feedback process, LCD display initialization driver, PWM initialization
Generating program, timer initialization program, delay initialization function, interrupts configuration, system initialization journey at initialization of (a) serial ports program
Sequence.System initialization, delay initialization are carried out in principal function first, interrupts configuration, initialization of (a) serial ports, key initialization, LCD liquid
Crystal display initialization, PWM initialization.It is sent by serial ports to LCD and shows initial respiratory rate (10 times/min), respiratory capacity
The character string of (12L/min) and operating status (stopping)；Then key scan is carried out, by judging whether corresponding key is pressed
Thus to execute corresponding order: respiratory rate add-substract key is adjusted by controlling the disconnection actuation interval time of relay
Save the size of respiratory rate；Respiratory capacity add-substract key adjusts the plus-minus of respiratory capacity by adjusting the duty ratio of output pwm signal.It is logical
LCD liquid crystal display is sent to by serial ports when crossing the fructufy of key adjusting and realizes visualized operation.
PWM control module includes: L298N direct current motor drive circuit, optical coupling isolation circuit, under-voltage current foldback circuit.
Wherein L298N direct current motor drive circuit is for amplifying the embedded type control module GPIO signal exported, to control
The speed regulation and positive and negative rotation of motor, specific control logic is referring to table 1；Optical coupling isolation circuit is for eliminating motor-drive circuit to insertion
The interference of formula control module input signal；Under-voltage current foldback circuit can prevent transient high-current from burning module.Physical circuit can
As shown in Figure 4.
The working principle of the invention:
In the embodiment of the present invention, the control mode to air pump is mainly PWM technology, i.e., to inverter circuit switching device
On-off is controlled, and so that output end is obtained a series of equal pulse of amplitudes, sine wave or required is replaced with these pulses
Waveform.Multiple pulses are namely generated in the half period of output waveform, and the equal threshold voltages of each pulse is made to be positive string waveform,
Output smoothing obtained and low-order harmonic is few.The width of each pulse is modulated by certain rule, i.e., changeable inversion
Output frequency also can be changed in the size of circuit output voltage.When respiratory rate and respiratory capacity are adjusted by parameter regulation plate
When, key feeds back to STM32 single-chip microcontroller by GPIO mouthfuls, and regulating command is judged in insertion program, exports from GPIO mouthfuls
The pwm signal of different pulse widths adjusts the motor speed of air pump by changing the duty ratio of PWM, to realize respiratory capacity
Big minor adjustment；And pass through the cycle-index of routine change pwm pulse, the adjusting of Lai Shixian respiratory rate size.Pwm pulse letter
Number definition codetermined by respiratory rate, respiratory capacity and to the logic control of air pump motor, respiratory rate determines air pump
The period of motor positive and inverse, respiratory capacity determine the brake of the revolving speed and air pump motor of air pump motor positive and negative rotation, hanging control
System is realized by corresponding pwm signal pulse.
The pwm pulse signal exported through embedded type control module 1 is sent to PWM control module 3 with GPIO pin, carries out
The boosting of pwm signal is adjusted, and controls the unlatching and closure of the inverter circuit switching device in PWM control module 3, exports a system
The equal periodic voltage pulses of column amplitude control air pump 4, and specific control logic is referring to table 1.
GPIO through embedded type control module 1 controls the first solenoid valve 5 and the second electromagnetism the relay 10 that controls
The conducting and closing of valve 6 cooperate air pump PWM control module 3 to realize the hose A outlet from output precision, hose B air inlet.
When the conducting of the first solenoid valve 5, second solenoid valve 6 are closed and control the motor rotating forward of air pump 4, hose A exhales；And when the
When the conducting of two solenoid valves 6, the first solenoid valve 5 close and control the motor reversal of air pump 4, hose B carries out air-breathing.This is one
Respiratory cycle, so circulation simulate the breathing of people.
1. air pump motor of table controls signal logic schematic diagram
| IN1 | IN2 | ENA | Export result |
| 0 | 0 | X | Brake |
| 1 | 1 | X | Vacantly |
| 1 | 0 | PWM | Rotate forward speed regulation |
| 0 | 1 | PWM | Reversion speed regulation |
| 1 | 0 | 1 | It rotates forward at full speed |
| 0 | 1 | 1 | It inverts at full speed |
Preferably, the embedded type control module 1 in the embodiment of the present invention, electric power driving module 2, PWM control module 3, gas
Pump 4, solenoid valve 5 and solenoid valve 6 are fixed to be placed in one and customized opens in iron sheet case；Display 7, parameter regulation plate 9
It is placed on iron sheet chamber door, convenient for being intuitively adjusted and controlling；Expiration hose A and inhaling hose B warp in output precision
Iron sheet chamber door stretches out and extends 50cm, more convenient to be tested.The present embodiment human body respiration simulator only needs 220V to turn 24V's
Adapter can work normally, small and exquisite, facilitate installation and movement.
In conclusion breathing simulator of the invention can simulate the characteristics of real human body breathing, it is able to satisfy real human body
Respiratory rate and respiratory capacity, the gas flow of breathing meets sinusoidal rule curve, in this way can be instead of original constant flow
Mode more really reacts human body respiration process, so as to really react human body sucking air event, reacts human body respiration
The pollutant exposure level in area；In addition human body respiration dispersion of pollutants rule also can more really be reacted.This dress of the invention
It sets and has used high performance microcontroller and advanced PWM control technology, control positive and negative rotation and the speed regulation of air pump to realize human body
Respiratory, control to adjust that precision is high, and stability is good, response is fast.Human body respiration simulation is carried out by the present apparatus, is overcome
Use experimental error brought by original human body respiration device.Experiment condition is improved to the actual response journey of real working condition
Degree can accurately react the propagation law of human body respiration area Pollution exposure level and human body respiration pollutant, to solve environment
Middle dispersion of pollutants problem improves air quality and plays a significant role.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although referring to above-described embodiment pair
The present invention is described in detail, those of ordinary skill in the art still can to a specific embodiment of the invention into
Row modification perhaps equivalent replacement these without departing from any modification of spirit and scope of the invention or equivalent replacement, applying
Within pending claims of the invention.
Claims (10)
1. a kind of simulator of real human body respiratory characterized by comprising
Electric power driving module (2), for the component power supply to need power supply in the simulator；
Parameter adjustment module, for inputting the adjustment signal of respiratory rate and respiratory capacity；
Embedded micro-control module (1), the PWM that the adjustment signal for being inputted according to parameter adjustment module adjusts output control letter
Number and relay (10) control signal, while for exporting real-time respiratory rate and respiratory capacity；
PWM control module (3), the pwm control signal for being exported according to embedded micro-control module (1) export air pump motor
Signal is controlled, revolving speed and the steering of air pump motor are adjusted；
Display (7), for receiving and showing the real-time respiratory rate and respiratory capacity of embedded micro-control module (1) output；
Air pump (4), for realizing that the real human body of predetermined respiratory rate and respiratory capacity is exhaled according to the revolving speed and steering of air pump motor
Inhale process simulation；The air pump (4) is communicated with air intake duct and exhaust tube, and the first solenoid valve (5), exhaust tube are provided on air intake duct
On be provided with second solenoid valve (6)；
Relay (10), relay (10) the control signal for being exported according to embedded micro-control module (1) realize the first electricity
The on-off of magnet valve (5) and second solenoid valve (6)；Wherein, when the first solenoid valve (5) is connected to, second solenoid valve (6) is disconnected；Second
When solenoid valve (6) is connected to, the first solenoid valve (5) is disconnected.
2. a kind of simulator of real human body respiratory according to claim 1, which is characterized in that the power supply drives
Dynamic model block (2) includes: adapter and voltage reduction module；
The adapter is for connecting external voltage；The adapter output 24V voltage supplies voltage reduction module, parameter regulation mould
Block, air pump motor, the first solenoid valve (5) and second solenoid valve (6)；
Voltage reduction module exports 3.3V voltage and supplies embedded micro-control module (1), display (7) and relay (10).
3. a kind of simulator of real human body respiratory according to claim 1, which is characterized in that embedded micro-control
Molding block (1) includes: microprocessor STM32 single-chip microcontroller and its control driving circuit；It controls driving circuit and controls mould with PWM respectively
Block (3), display (7) are connected with parameter adjustment module；For driving display (7), for driving in parameter adjustment module
Regulating key, be also used for control signal output.
4. a kind of simulator of real human body respiratory according to claim 3, which is characterized in that single-chip microcontroller is
STM32F103 single-chip microcontroller, using Cortex-M3 kernel, built-in timer can produce multi-channel PWM output and multiple operate
Two-way GPIO port；It is believed by the regulating key in GPIO pin and parameter adjustment module, the PWM in PWM control module (3)
Number receiving terminal is connected with GPIO control terminal, the data signal input of display (7) and relay (10).
5. a kind of simulator of real human body respiratory according to claim 1, which is characterized in that parameter regulation mould
Block includes parameter regulation plate (9)；
The regulating key of parameter regulation plate (9) includes: that respiratory rate adds that key a, respiratory rate subtract key b, respiratory capacity adds key
C, respiratory capacity subtracts key d, runs/stop key e and simulator master switch f；
Respiratory rate add key a and respiratory rate subtract key b to embedded micro-control module (1) send respiratory rate increasing add deduct
Few order；
Respiratory capacity add key c and respiratory capacity subtract key d to embedded micro-control module (1) send respiratory capacity increase or decrease life
It enables；
Key commands adjust output to the PWM control letter of PWM control module (3) to embedded micro-control module (1) based on the received
Number.
6. a kind of simulator of real human body respiratory according to claim 5, which is characterized in that embedded micro-control
Key commands adjust output to the specific steps packet of the pwm control signal of PWM control module (3) to molding block (1) based on the received
It includes:
When step 1, by key pressing, signal feeds back to embedded micro-control module (1), make two GPIO mouthfuls according to control logic table
Export corresponding high level or low level；Meanwhile it exports pwm control signal to PWM by the output port of microcontroller and controlling
Module (3)；Wherein, control logic table are as follows:
Step 2, light-coupled isolation is carried out by PWM control module (3) and signal amplifies, for believing pwm signal and logic control
Number stablize and be not driven circuit interference, to control revolving speed and the steering of air pump motor to realize respiratory capacity and respiratory rate
It adjusts.
7. a kind of simulator of real human body respiratory according to claim 5, which is characterized in that
The range that respiratory rate is adjusted is 10-20 times/min, and the respiratory rate that each key increases or decreases is 0.5 time/min；
The range that respiratory capacity is adjusted is 6-12L/min, and the respiratory capacity that each key increases or decreases is 0.5L/min.
8. a kind of simulator of real human body respiratory according to claim 1, which is characterized in that PWM controls mould
Block (3) includes: L298N direct current motor drive circuit, optical coupling isolation circuit, under-voltage current foldback circuit；
Wherein, L298N direct current motor drive circuit is used to amplify the signal that embedded micro-control module (1) exports, from
And control the speed regulation and positive and negative rotation of motor；
Optical coupling isolation circuit is for eliminating L298N direct current motor drive circuit to embedded micro-control module (1) input signal
Interference；
Under-voltage current foldback circuit is for preventing transient high-current from burning module.
9. a kind of simulator of real human body respiratory according to any one of claim 1 to 8, feature exist
In, further includes: integral box；
Embedded type control module, electric power driving module (2), PWM control module (3), air pump (4), the first solenoid valve (5) and second
Solenoid valve (6) is fixedly mounted in integral box to be opened/closed；
Display (7) and parameter adjustment module are fixedly mounted on the outer wall of integral box.
10. a kind of analogy method of real human body respiratory, which is characterized in that it is based on simulator described in claim 1,
The following steps are included:
S1 inputs the adjustment signal of respiratory rate and respiratory capacity by parameter adjustment module；
S2 is controlled by embedded micro-control module (1) according to the PWM that the adjustment signal that parameter adjustment module inputs adjusts output
Signal and relay (10) control signal, while for exporting real-time respiratory rate and respiratory capacity；
S3 exports air pump motor according to the pwm control signal that embedded micro-control module (1) exports by PWM control module (3)
Control signal, adjust revolving speed and the steering of air pump motor；
S4 receives by display (7) and shows the real-time respiratory rate and respiratory capacity of embedded micro-control module (1) output；
S5 realizes the real human body of predetermined respiratory rate and respiratory capacity by air pump (4) according to the revolving speed of air pump motor and steering
Respiratory simulation；In simulation process, the relay that is exported by relay (10) according to embedded micro-control module (1)
(10) control signal realizes the on-off of the first solenoid valve (5) and second solenoid valve (6)；Wherein, when the first solenoid valve (5) is connected to,
Second solenoid valve (6) disconnects；When second solenoid valve (6) is connected to, the first solenoid valve (5) is disconnected.
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