CN204694597U - Intelligent mouth mask based on mobile terminal is breathed and PM detection system - Google Patents
Intelligent mouth mask based on mobile terminal is breathed and PM detection system Download PDFInfo
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- CN204694597U CN204694597U CN201520236620.5U CN201520236620U CN204694597U CN 204694597 U CN204694597 U CN 204694597U CN 201520236620 U CN201520236620 U CN 201520236620U CN 204694597 U CN204694597 U CN 204694597U
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 22
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
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Abstract
A kind of intelligent mouth mask based on mobile terminal of the utility model is breathed and PM detection system, belongs to electronic information and medicine technology field; This system comprises intelligent mouth mask and mobile terminal, and described intelligent mouth mask comprises mask body, the first filtrator, the second filtrator, PM alarm lamp, power module, PM air mass sensor, microcontroller, bluetooth sending module and respiration transducer; The utility model purifies air under the weather of haze, achieve the detection to human body respiration, PM concentration value in air ambient is monitored in real time, the utility model uses simple, and easy to operate, audient crowd is wide, there is good application, utility model have also contemplated that the feature of portability simultaneously, and whole system is integrated in mouth mask, and person easy to use carries.
Description
Technical Field
The utility model belongs to the technical field of electronic information and medical science, concretely relates to intelligent gauze mask breathes and PM detecting system based on mobile terminal.
Background
Along with the continuous progress and development of society, industrial pollution is more and more serious, and at present, the frequency of respiratory diseases suffered by people is continuously increased, human respiratory signals are important basis for diagnosing the respiratory diseases, the respiratory rhythm of the human body is detected, abnormal respiratory signals are identified, whether the human body is sick or not can be found in time, and therefore the monitoring and analysis of daily respiratory signals of people become more important; meanwhile, the quality of air determines the body quality of people, a large part of people lack air pollution consciousness, cannot know the air quality condition of the place where people are located, and lack an air pollution early warning mechanism; the mask becomes a shield for protecting the health of people, the research on intelligent masks becomes more and more valuable, the traditional mask only has a single air filtering function, the breathing health condition of a wearer cannot be interactively detected in real time, the PM air pollution cannot be pre-warned, and the mask is far from enough for today with more and more serious air pollution and frequent respiratory diseases.
SUMMERY OF THE UTILITY MODEL
To prior art's shortcoming, the utility model provides an intelligence gauze mask is breathed and PM detecting system based on mobile terminal to reach air-purifying, detect human breathing, real time monitoring PM air quality, portable and the purpose of simplified operation.
The utility model provides an intelligence gauze mask is breathed and PM detecting system based on mobile terminal which characterized in that: the intelligent mask comprises an intelligent mask and a mobile terminal;
the intelligent mask comprises a mask body, a first filter, a second filter, a PM alarm lamp, a power module, a PM air quality sensor, a microcontroller, a Bluetooth sending module and a breathing sensor;
the first filter is connected with the left side wall of the mask body through an interface, and the second filter is connected with the right side wall of the mask body through an interface; the breathing sensor is fixedly arranged on the left inclined wall of the mask body, the PM air quality sensor is fixedly arranged on the right inclined wall of the mask body, the PM alarm lamp is fixedly arranged at the joint of the triangular front panel and the left inclined wall of the mask body, the microcontroller is fixedly arranged on the triangular front panel of the mask body, the Bluetooth sending module is fixedly arranged on the microcontroller, and the power supply module is fixedly arranged at the upper end of the bottom plate of the mask body;
the respiration sensor comprises a respiration signal acquisition circuit, a primary differential amplification circuit, a low-pass filter circuit and a post-stage amplification circuit;
the output end of the respiration signal acquisition circuit is connected with the input end of the primary differential amplification circuit, the output end of the primary differential amplification circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit is connected with the input end of the post-stage amplification circuit.
The power supply module is characterized in that a voltage output end of the power supply module is connected with a power supply port of the PM air quality sensor, a power supply port of the microcontroller and a power supply port of the breathing sensor, an output end of the PM air quality sensor is connected with a first input end of the microcontroller, an output end of the breathing sensor is connected with a second input end of the microcontroller, a first output end of the microcontroller is connected with an input end of the Bluetooth sending module, and a second output end of the microcontroller is connected with an input end of the PM alarm lamp.
The first filter and the second filter are filled with cotton and activated carbon.
The respiration signal acquisition circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor;
the signal acquisition circuit is characterized in that one end of a first resistor of the signal acquisition circuit is connected with a power supply, the other end of the first resistor is simultaneously connected with one end of a second resistor, one end of a third resistor and one end of a fourth resistor, the other end of the second resistor is grounded, the other end of the third resistor is connected with one end of a fifth resistor, the other end of the fourth resistor is connected with one end of a sixth resistor, the other end of the fifth resistor is connected with the other end of the sixth resistor and is grounded, the other end of the third resistor and the other end of the fourth resistor are used as output ends of the signal acquisition circuit, the fifth resistor is used as a temperature change acquisition resistor in the mask, and the sixth resistor is used as an external temperature reference resistor.
The primary differential amplifying circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a first capacitor, a second capacitor, a first operational amplifier, a second operational amplifier, a third operational amplifier and a fourth operational amplifier;
one end of the seventh resistor is simultaneously connected with one end of the eighth resistor and the non-inverting input end of the first operational amplifier, the other end of the eighth resistor is grounded, one end of the ninth resistor is simultaneously connected with one end of the tenth resistor and the inverting input end of the first operational amplifier, the other end of the seventh resistor and the other end of the ninth resistor are used as the input ends of the primary differential amplifying circuit, the other end of the tenth resistor is simultaneously connected with the output end of the first operational amplifier and one end of the eleventh resistor, the other end of the eleventh resistor is simultaneously connected with one end of the twelfth resistor, one end of the first capacitor and the inverting input end of the second operational amplifier, the other end of the twelfth resistor is simultaneously connected with the other end of the first capacitor, the output end of the second operational amplifier and one end of the thirteenth resistor, the non-inverting input end of the second operational amplifier is connected with one end of the fourteenth resistor, and the other, the other end of the thirteenth resistor is simultaneously connected with one end of a fifteenth resistor and the non-inverting input end of a third operational amplifier, the other end of the fifteenth resistor is grounded, the inverting input end of the third operational amplifier is simultaneously connected with one end of a sixteenth resistor, one end of a seventeenth resistor and one end of a second capacitor, the output end of the third operational amplifier is simultaneously connected with the other end of the seventeenth resistor, the other end of the second capacitor and the non-inverting input end of a fourth operational amplifier, the other end of the sixteenth resistor is grounded, and the inverting input end of the fourth operational amplifier is connected with the output end of the fourth operational amplifier and serves as the output end of the primary differential amplifying circuit.
The low-pass filter circuit comprises an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a fifth operational amplifier, a sixth operational amplifier, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor;
one end of the eighteenth resistor is simultaneously connected with one end of the nineteenth resistor and one end of the third capacitor, the other end of the eighteenth resistor is used as the input end of the low-pass filter circuit, the other end of the nineteenth resistor is simultaneously connected with one end of the fourth capacitor and the non-inverting input end of the fifth operational amplifier, the other end of the fourth capacitor is grounded, the other end of the third capacitor is simultaneously connected with the output end of the fifth operational amplifier, one end of the twentieth resistor and one end of the twenty-first resistor, the other end of the twentieth resistor is simultaneously connected with one end of the twenty-second resistor and the inverting input end of the fifth operational amplifier, the other end of the twenty-second resistor is grounded, the other end of the twenty-first resistor is simultaneously connected with one end of the twenty-third resistor and one end of the fifth capacitor, the other end of the twenty-third resistor is simultaneously connected, the other end of the sixth capacitor is grounded, the other end of the fifth capacitor is simultaneously connected with the output end of the sixth operational amplifier and one end of the twenty-fourth resistor, the other end of the twenty-fourth resistor is simultaneously connected with the inverting input end of the sixth operational amplifier and one end of the twenty-fifth resistor, and the other end of the twenty-fifth resistor is grounded.
The post-stage amplification circuit comprises a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor and a seventh operational amplifier;
one end of the twenty-sixth resistor is simultaneously connected with one end of the twenty-seventh resistor and the inverting input end of the seventh operational amplifier, the other end of the twenty-sixth resistor is used as the input end of the post-stage amplification circuit, the other end of the twenty-seventh resistor is connected with the output end of the seventh operational amplifier and used as the output end of the respiration sensor, the non-inverting input end of the seventh operational amplifier is connected with one end of the twenty-eighth resistor, and the other end of the twenty-eighth resistor is grounded.
The utility model has the advantages that:
the utility model relates to an intelligent gauze mask breathing and PM detecting system based on mobile terminal, which combines the emerging scientific research technology with the gauze mask, realizes the detection of human breathing while purifying the air in the haze weather, and realizes the monitoring of the daily breathing rhythm and the identification of breathing abnormity, etc.; the utility model can monitor the PM concentration value in the air environment in real time, avoid the serious pollution area and maintain the physical and mental health of the mask wearer; the utility model has simple using steps, convenient operation, wide audience population and good applicability; simultaneously the utility model discloses also consider the characteristics of portability, breathe detection module and PM detection module through modern PCB board integrated circuit minimizing, to the integrated gauze mask of entire system in, the person of facilitating the use carries.
Drawings
Fig. 1 is a front view of an intelligent mask according to an embodiment of the present invention;
fig. 2 is a rear view of an intelligent mask according to an embodiment of the present invention;
FIG. 3 is a respiratory signal acquisition circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a primary differential amplifier circuit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a low pass filter circuit according to an embodiment of the invention;
FIG. 6 is a diagram of a post-amplification circuit according to an embodiment of the invention.
Detailed Description
An embodiment of the present invention will be further described with reference to the accompanying drawings.
In the embodiment, the intelligent mask breathing and PM detection system based on the mobile terminal comprises an intelligent mask and the mobile terminal;
in this embodiment, the mobile terminal adopts a smart phone;
in this embodiment, the intelligent mask is as shown in fig. 1 and 2, in which fig. 1 is a mask body, 2 is a first filter, 3 is a second filter, 4 is a PM alarm lamp, 5 is a PM air quality sensor, 6 is a microcontroller, 7 is a bluetooth sending module, 8 is a breathing sensor, and 9 is a power module in fig. 2; wherein,
the mask body 1 adopts a 3M6200 dustproof mask, the PM alarm lamp 4 adopts a Risym 5mm LED lamp bead, the PM air quality sensor 5 adopts a Japanese dust sensor GP2Y1010AU0F, the microcontroller 6 adopts a microcontroller with ultra-low power consumption of msp430f14916 of Ti Texas instruments, the Bluetooth sending module 7 adopts a Bluetooth serial port module XM-10B 4.0BLE, the first filter 2 and the second filter 3 are filled with cotton and activated carbon, and the power supply module 9 converts a 9V power supply into a 5V power supply and a-5V power supply to supply power to the intelligent mask;
the interface of the first filter 2 is in threaded connection with the mounting interface of the left side wall of the mask body 1, and the interface of the second filter 3 is in threaded connection with the mounting interface of the right side wall of the mask body 1; the breathing sensor 8 is fixedly arranged on the left inclined wall of the mask body 1, the PM air quality sensor 5 is fixedly arranged on the right inclined wall of the mask body 1, the PM alarm lamp 4 is fixedly arranged at the joint of the triangular front panel and the left inclined wall of the mask body 1, the microcontroller 6 is fixedly arranged on the triangular front panel of the mask body 1, the Bluetooth sending module 7 is fixedly arranged on the microcontroller 6, and the power supply module 9 is fixedly arranged at the upper end of the bottom plate of the mask body 1;
the voltage output end of the power supply module 9 is connected with a power supply port of the PM air quality sensor 5, a power supply port of the microcontroller 6 and a power supply port of the respiration sensor 8, a second pin 2 of the PM air quality sensor 5 is connected with a grounding pin GND of the microcontroller 6, a third pin 3 of the PM air quality sensor 5 is connected with a twelfth pin P12 of the microcontroller 6, a fifth pin 5 of the PM air quality sensor 5 is connected with a sixty-five pin P65 of the microcontroller 6, and a sixth pin 6 of the PM air quality sensor 5 is connected with a 5V power supply pin VCC5 of the microcontroller 6; the output end of the respiration sensor 8 is connected with a sixty-sixth pin P66 of the microcontroller 6; a thirty-fourth pin P34 of the microcontroller 6 is connected with a receiving pin RXD of the Bluetooth transmitting module 7, and a thirty-fifth pin P35 of the microcontroller 6 is connected with a transmitting pin TXD of the Bluetooth transmitting module 7; a tenth pin P10 of the microcontroller 6 is connected to the input of the PM warning lamp 4;
in this embodiment, the respiration sensor includes a respiration signal acquisition circuit, a primary differential amplification circuit, a low-pass filter circuit, and a post-amplification circuit; wherein,
the output end of the respiration signal acquisition circuit is connected with the input end of the primary differential amplification circuit, the output end of the primary differential amplification circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit is connected with the input end of the post-stage amplification circuit;
as shown in fig. 3, the respiration signal acquisition circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6;
in this embodiment, the fifth resistor R5 and the sixth resistor R6 are MF58NTC glass-sealed thermistors, the fifth resistor R5 is placed inside the mask body 1 as a temperature acquisition resistor, the sixth resistor R6 is placed outside the mask body 1 as an external temperature reference resistor, the resistor R5 changes a resistance value along with the change of the air temperature inside the mask, so as to change a voltage value, the voltage values of the fifth resistor R5 and the sixth resistor R6 are subtracted, and an obtained voltage difference signal is a voltage signal of the temperature change inside the mask when a mask wearer breathes;
one end of a first resistor R1 of the signal acquisition circuit is connected with a 5V power supply, the other end of the first resistor R1 is simultaneously connected with one end of a second resistor R2, one end of a third resistor R3 and one end of a fourth resistor R4, the other end of the second resistor R2 is grounded, the other end of the third resistor R3 is connected with one end of a fifth resistor R5, the other end of the fourth resistor R4 is connected with one end of a sixth resistor R6, the other end of the fifth resistor R5 is connected with the other end of a sixth resistor R6 and grounded, the other end of the third resistor R3 and the other end of the fourth resistor R4 are used as output ends of the signal acquisition circuit, the fifth resistor R5 is used as a mask internal temperature change acquisition resistor, and the sixth resistor R6 is used as an external temperature reference resistor;
as shown in fig. 4, the primary differential amplifying circuit includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, a first capacitor C1, a second capacitor C2, a first operational amplifier U1, a second operational amplifier U2, a third operational amplifier U3, and a fourth operational amplifier U4;
in the embodiment, the first operational amplifier U1, the second operational amplifier U2, the third operational amplifier U3 and the fourth operational amplifier U4 all adopt an OP07 chip;
one end of the seventh resistor R7 is connected to one end of the eighth resistor R8 and the non-inverting input end of the first operational amplifier U1, the other end of the eighth resistor R8 is grounded, one end of the ninth resistor R9 is connected to one end of the tenth resistor R10 and the inverting input end of the first operational amplifier U1, the negative power terminal VEE of the first operational amplifier U1 is connected to a voltage of-5V, the positive power terminal VDD of the first operational amplifier U1 is connected to a voltage of 5V, the other end of the seventh resistor R7 and the other end of the ninth resistor R9 are used as the input ends of the primary differential amplifier circuit, the other end of the tenth resistor R10 is connected to the output end of the first operational amplifier U1 and one end of the eleventh resistor R11, the other end of the eleventh resistor R11 is connected to one end of the twelfth resistor R7378, one end of the first capacitor C6866 and the inverting input end of the second operational amplifier U2, and the other end of the twelfth resistor R12 is connected to the other end of the first capacitor C29, An output end of a second operational amplifier U2 and one end of a thirteenth resistor R13, a non-inverting input end of the second operational amplifier U2 is connected with one end of a fourteenth resistor R14, a power supply negative terminal VEE of the second operational amplifier U2 is connected with a voltage of-5V, a power supply positive terminal VDD of the second operational amplifier U2 is connected with a voltage of 5V, the other end of the fourteenth resistor R14 is grounded, the other end of the thirteenth resistor R13 is simultaneously connected with one end of a fifteenth resistor R15 and the non-inverting input end of a third operational amplifier U3, the other end of a fifteenth resistor R15 is grounded, an inverting input end of the third operational amplifier U3 is simultaneously connected with one end of a sixteenth resistor R16, one end of a seventeenth resistor R17 and one end of a second capacitor C2, an output end of the third operational amplifier U3 is simultaneously connected with the other end of a seventeenth resistor C17, the other end of a second capacitor C2 and the non-inverting input end of, a power supply negative pin VEE of a third operational amplifier U3 is connected with a voltage of-5V, a power supply positive pin VDD of a third operational amplifier U3 is connected with a voltage of 5V, the other end of a sixteenth resistor R16 is grounded, an inverting input end of a fourth operational amplifier U4 is connected with an output end of the fourth operational amplifier U4 and serves as an output end of the primary differential amplification circuit, a power supply negative pin VEE of a fourth operational amplifier U4 is connected with a voltage of-5V, and a power supply positive pin VDD of a fourth operational amplifier U4 is connected with a voltage of 5V;
as shown in fig. 5, the low-pass filter circuit includes an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a fifth operational amplifier U5, a sixth operational amplifier U6, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6;
in the present embodiment, the fifth operational amplifier U5 and the sixth operational amplifier U6 both use OP07 chips;
one end of the eighteenth resistor R18 is connected to one end of the nineteenth resistor R19 and one end of the third capacitor C3, the other end of the eighteenth resistor R18 is used as the input end of the low-pass filter circuit, the other end of the nineteenth resistor R19 is connected to one end of the fourth capacitor C4 and the non-inverting input end of the fifth operational amplifier U5, the other end of the fourth capacitor C4 is grounded, the other end of the third capacitor C3 is connected to the output end of the fifth operational amplifier U5, one end of the twentieth resistor R20 and one end of the twenty-first resistor R21, the negative power pin VEE of the fifth operational amplifier U5 is connected to the voltage of-5V, the positive power pin VDD of the fifth operational amplifier U5 is connected to the voltage of 5V, the other end of the twentieth resistor R20 is connected to one end of the twenty-second resistor R22 and the inverting input end of the fifth operational amplifier U5, and the other end of the twenty, the other end of the twenty-first resistor R21 is simultaneously connected with one end of a twenty-third resistor R23 and one end of a fifth capacitor C5, the other end of the twenty-third resistor R23 is simultaneously connected with one end of a sixth capacitor C6 and the non-inverting input end of a sixth operational amplifier U6, the other end of the sixth capacitor C6 is grounded, the other end of the fifth capacitor C5 is simultaneously connected with the output end of the sixth operational amplifier U6 and one end of a twenty-fourth resistor R24, the other end of the twenty-fourth resistor R24 is simultaneously connected with the inverting input end of the sixth operational amplifier U6 and one end of the twenty-fifth resistor R25, the power supply cathode pin VEE of the sixth operational amplifier U6 is connected with a voltage of-5V, the power supply anode pin of the sixth operational amplifier U6 is connected with a voltage of VDD, and the other end of the twenty-fifth resistor R25 is;
as shown in fig. 6, the post-stage amplifying circuit includes a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28, and a seventh operational amplifier U7;
in this embodiment, the seventh operational amplifier U7 is an OP07 chip;
one end of the twenty-sixth resistor R26 is simultaneously connected with one end of the twenty-seventh resistor R27 and the inverting input end of the seventh operational amplifier U7, the other end of the twenty-sixth resistor R26 is used as the input end of the post-amplification circuit, the other end of the twenty-seventh resistor R27 is connected with the output end of the seventh operational amplifier U7 and is used as the output end of the respiration sensor, a power supply negative electrode pin VEE of the seventh operational amplifier U7 is connected with-5V voltage, a power supply positive electrode pin VDD of the seventh operational amplifier U7 is connected with 5V voltage, the non-inverting input end of the seventh operational amplifier U7 is connected with one end of the twenty-eighth resistor R28, and the other end of the twenty-eighth resistor R28 is grounded;
in this embodiment, the mobile terminal includes a denoising module, a calculation module, and a path planning module; wherein,
a denoising module: the device comprises a calculation module, a temperature change voltage difference digital signal processing module and a noise elimination module, wherein the calculation module is used for receiving the temperature change voltage difference digital signal sent by the respiration sensor in the respirator of the respirator wearer during respiration, denoising the temperature change voltage difference digital signal and sending the denoised temperature change voltage difference digital signal to the calculation module;
a calculation module: the device is used for calculating and obtaining the breathing rate value of the mask wearer according to the denoised temperature change voltage difference digital signal;
a path planning module:
when detecting the PM air quality, the system is used for receiving an actual PM concentration value sent by a PM air quality sensor and sending the actual PM concentration value to a network server through a wireless network;
and during path planning, the method is used for positioning the mask wearer, receiving the actual PM concentration value of the area where the mask wearer is located in the network server through the wireless network according to the destination determined by the mask wearer, and planning the optimal path of the PM air quality.
Claims (7)
1. The utility model provides an intelligence gauze mask is breathed and PM detecting system based on mobile terminal which characterized in that: the intelligent mask comprises an intelligent mask and a mobile terminal;
the intelligent mask comprises a mask body, a first filter, a second filter, a PM alarm lamp, a power module, a PM air quality sensor, a microcontroller, a Bluetooth sending module and a breathing sensor;
the first filter is connected with the left side wall of the mask body through an interface, and the second filter is connected with the right side wall of the mask body through an interface; the breathing sensor is fixedly arranged on the left inclined wall of the mask body, the PM air quality sensor is fixedly arranged on the right inclined wall of the mask body, the PM alarm lamp is fixedly arranged at the joint of the triangular front panel and the left inclined wall of the mask body, the microcontroller is fixedly arranged on the triangular front panel of the mask body, the Bluetooth sending module is fixedly arranged on the microcontroller, and the power supply module is fixedly arranged at the upper end of the bottom plate of the mask body;
the respiration sensor comprises a respiration signal acquisition circuit, a primary differential amplification circuit, a low-pass filter circuit and a post-stage amplification circuit;
the output end of the respiration signal acquisition circuit is connected with the input end of the primary differential amplification circuit, the output end of the primary differential amplification circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit is connected with the input end of the post-stage amplification circuit.
2. The intelligent mask breathing and PM detection system based on mobile terminal of claim 1, wherein: the power supply module is characterized in that a voltage output end of the power supply module is connected with a power supply port of the PM air quality sensor, a power supply port of the microcontroller and a power supply port of the breathing sensor, an output end of the PM air quality sensor is connected with a first input end of the microcontroller, an output end of the breathing sensor is connected with a second input end of the microcontroller, a first output end of the microcontroller is connected with an input end of the Bluetooth sending module, and a second output end of the microcontroller is connected with an input end of the PM alarm lamp.
3. The intelligent mask breathing and PM detection system based on mobile terminal of claim 1, wherein: the first filter and the second filter are filled with cotton and activated carbon.
4. The intelligent mask breathing and PM detection system based on mobile terminal of claim 1, wherein: the respiration signal acquisition circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor;
the signal acquisition circuit is characterized in that one end of a first resistor of the signal acquisition circuit is connected with a power supply, the other end of the first resistor is simultaneously connected with one end of a second resistor, one end of a third resistor and one end of a fourth resistor, the other end of the second resistor is grounded, the other end of the third resistor is connected with one end of a fifth resistor, the other end of the fourth resistor is connected with one end of a sixth resistor, the other end of the fifth resistor is connected with the other end of the sixth resistor and is grounded, the other end of the third resistor and the other end of the fourth resistor are used as output ends of the signal acquisition circuit, the fifth resistor is used as a temperature change acquisition resistor in the mask, and the sixth resistor is used as an external temperature reference resistor.
5. The intelligent mask breathing and PM detection system based on mobile terminal of claim 1, wherein: the primary differential amplifying circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a first capacitor, a second capacitor, a first operational amplifier, a second operational amplifier, a third operational amplifier and a fourth operational amplifier;
one end of the seventh resistor is simultaneously connected with one end of the eighth resistor and the non-inverting input end of the first operational amplifier, the other end of the eighth resistor is grounded, one end of the ninth resistor is simultaneously connected with one end of the tenth resistor and the inverting input end of the first operational amplifier, the other end of the seventh resistor and the other end of the ninth resistor are used as the input ends of the primary differential amplifying circuit, the other end of the tenth resistor is simultaneously connected with the output end of the first operational amplifier and one end of the eleventh resistor, the other end of the eleventh resistor is simultaneously connected with one end of the twelfth resistor, one end of the first capacitor and the inverting input end of the second operational amplifier, the other end of the twelfth resistor is simultaneously connected with the other end of the first capacitor, the output end of the second operational amplifier and one end of the thirteenth resistor, the non-inverting input end of the second operational amplifier is connected with one end of the fourteenth resistor, and the other, the other end of the thirteenth resistor is simultaneously connected with one end of a fifteenth resistor and the non-inverting input end of a third operational amplifier, the other end of the fifteenth resistor is grounded, the inverting input end of the third operational amplifier is simultaneously connected with one end of a sixteenth resistor, one end of a seventeenth resistor and one end of a second capacitor, the output end of the third operational amplifier is simultaneously connected with the other end of the seventeenth resistor, the other end of the second capacitor and the non-inverting input end of a fourth operational amplifier, the other end of the sixteenth resistor is grounded, and the inverting input end of the fourth operational amplifier is connected with the output end of the fourth operational amplifier and serves as the output end of the primary differential amplifying circuit.
6. The intelligent mask breathing and PM detection system based on mobile terminal of claim 1, wherein: the low-pass filter circuit comprises an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a fifth operational amplifier, a sixth operational amplifier, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor;
one end of the eighteenth resistor is simultaneously connected with one end of the nineteenth resistor and one end of the third capacitor, the other end of the eighteenth resistor is used as the input end of the low-pass filter circuit, the other end of the nineteenth resistor is simultaneously connected with one end of the fourth capacitor and the non-inverting input end of the fifth operational amplifier, the other end of the fourth capacitor is grounded, the other end of the third capacitor is simultaneously connected with the output end of the fifth operational amplifier, one end of the twentieth resistor and one end of the twenty-first resistor, the other end of the twentieth resistor is simultaneously connected with one end of the twenty-second resistor and the inverting input end of the fifth operational amplifier, the other end of the twenty-second resistor is grounded, the other end of the twenty-first resistor is simultaneously connected with one end of the twenty-third resistor and one end of the fifth capacitor, the other end of the twenty-third resistor is simultaneously connected, the other end of the sixth capacitor is grounded, the other end of the fifth capacitor is simultaneously connected with the output end of the sixth operational amplifier and one end of the twenty-fourth resistor, the other end of the twenty-fourth resistor is simultaneously connected with the inverting input end of the sixth operational amplifier and one end of the twenty-fifth resistor, and the other end of the twenty-fifth resistor is grounded.
7. The intelligent mask breathing and PM detection system based on mobile terminal of claim 1, wherein: the post-stage amplification circuit comprises a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor and a seventh operational amplifier;
one end of the twenty-sixth resistor is simultaneously connected with one end of the twenty-seventh resistor and the inverting input end of the seventh operational amplifier, the other end of the twenty-sixth resistor is used as the input end of the post-stage amplification circuit, the other end of the twenty-seventh resistor is connected with the output end of the seventh operational amplifier and used as the output end of the respiration sensor, the non-inverting input end of the seventh operational amplifier is connected with one end of the twenty-eighth resistor, and the other end of the twenty-eighth resistor is grounded.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457177A (en) * | 2016-01-16 | 2016-04-06 | 郑辉 | Intelligent mask with built-in detection device |
| CN107307482A (en) * | 2017-08-23 | 2017-11-03 | 贵州千客科技有限公司 | A kind of mouth mask of detectable haze concentration |
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2015
- 2015-04-17 CN CN201520236620.5U patent/CN204694597U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457177A (en) * | 2016-01-16 | 2016-04-06 | 郑辉 | Intelligent mask with built-in detection device |
| CN107307482A (en) * | 2017-08-23 | 2017-11-03 | 贵州千客科技有限公司 | A kind of mouth mask of detectable haze concentration |
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