CN209106371U - A kind of intelligent mask for breathing detection - Google Patents
A kind of intelligent mask for breathing detection Download PDFInfo
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- CN209106371U CN209106371U CN201821192020.3U CN201821192020U CN209106371U CN 209106371 U CN209106371 U CN 209106371U CN 201821192020 U CN201821192020 U CN 201821192020U CN 209106371 U CN209106371 U CN 209106371U
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- resistance
- breathing detection
- arm chip
- power supply
- breathing
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Abstract
The utility model provides a kind of intelligent mask for breathing detection, including mask body, and mask body is equipped with breather valve, and breathing detection module is integrated on breather valve；Wherein, breathing detection module includes the ARM chip with function of Bluetooth communication and control function；Perceive temperature and the temperature sensor formed by NTC thermistor on breather valve；The resistance selection circuit for dividing and being formed by multiple lower arm resistance is carried out to voltage signal in NTC thermistor, wherein, one end of multiple lower arm resistance is individually connected with ARM chip respectively and ground connection is connected by ARM chip controls or is turned off, and the other end is connected after connecting together with NTC thermistor and ARM chip；The power supply powered to each component；The charging circuit to charge to power supply；And the antenna being connected with ARM chip.Implement the utility model, can be not only used for nose and mouth breathing occasion and not by human motion and Environmental Noise Influence, be also equipped with function of breath detection when movement.
Description
Technical field
The utility model relates to mask technical field more particularly to a kind of intelligent masks for breathing detection.
Background technique
Breathing is an important vital sign, and reflects basic health status, exercise intensity, one of sleep quality
Important indicator.During the motion, heart rate is lag for the reflection of exercise intensity, and breathe to reflect more in time
Exercise intensity, additionally it is possible to be used to active control exercise intensity；For example breathing should be with step during running for the promotion of rhythm Breathing Method
Consistent (three steps one are inhaled, two steps one are exhaled or two steps one are inhaled, a step one is exhaled) is adjusted, and by adjusting the rate control of breathing and cadence
Intensity of running and speed；Therefore the monitoring of respiration in motion process not only facilitates sporter and understands exercise intensity in time, more can
It is analyzed by data and helps sporter to find out the deficiency in control of breathing and improved, to improve sports achievement.
However, the sleep Scenario Design that existing breathing detection device and method are less both for human action greatly,
It is difficult to meet breathing detection demand when movement.
Inventors have found that mask can be used for nose and mouth breathing occasion, and not by human motion and Environmental Noise Influence,
But do not have detection function, it is therefore necessary to intellectualized reconstruction be carried out to mask, so that improved mask can be not only used for
Nose and mouth breathe occasion and not by human motions and Environmental Noise Influence, are also equipped with function of breath detection when movement.
Utility model content
The technical problem to be solved by the embodiment of the utility model is, providing a kind of intelligent mouth for breathing detection
Cover can be not only used for nose and mouth breathing occasion and not by human motion and Environmental Noise Influence, exhaling when being also equipped with movement
Inhale detection function.
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of intelligent mouth for breathing detection
Cover, including mask body, the mask body is equipped with breather valve, and breathing detection module is integrated on the breather valve；Its
In,
The breathing detection module includes:
ARM chip with function of Bluetooth communication and control function；
For perceiving the temperature variations of breather valve overdraught and being converted into the temperature sensor of voltage signal, the temperature
Degree sensor is set as NTC thermistor；
The resistance of temperature detection sensitivity is promoted for carrying out corresponding partial pressure to voltage signal in the NTC thermistor
Selection circuit, the resistance selection circuit are formed by multiple lower arm resistance；Wherein, one end of the multiple lower arm resistance respectively with
The ARM chip is individually connected and ground connection or shutdown, the other end of the multiple lower arm resistance is connected by the ARM chip controls
It is connected after connecting together with the NTC thermistor and the ARM chip is connected；
For the power supply of power supply, the power supply and the temperature sensor, resistance selection circuit and ARM chip
It is connected；
Charging circuit for charging to the power supply, the charging circuit are connected with the power supply；And
Antenna, the antenna are connected with the ARM chip.
Wherein, the NCP15WL473J03RC of the model Murata company of the NTC thermistor, corresponding B value are
4485, nominal resistance is 47K Ω, actual measurement thermal time constant is 0.27s.
Wherein, the DA14580 of the model Dialog Semiconductor of the ARM chip emits function in 0dBm
The reception electric current of the emission current of 5.1mA and 4.8mA under rate.
Wherein, there are six the multiple lower arm resistance, corresponding resistance value be 4M Ω, 2M Ω, 1M Ω, 500K Ω,
250K Ω and 125K Ω.
Wherein, the power supply uses 100mAh lighium polymer rechargeable battery.
Wherein, the charging circuit is formed by BQ21040 linear-charging IC.
Implement the utility model embodiment, has the following beneficial effects:
The utility model is integrated with breathing detection module on the breather valve of mask body, by selecting in breathing detection module
NTC thermistor acquires and passes through the ARM chip controls in breathing detection module to the temperature variations of breather valve
The number of lower arm resistance adjusts temperature detection sensitivity intelligently to realize to the breathing inspection under motion state in resistance selection circuit
It surveys, to reach not by human motion and Environmental Noise Influence, is also equipped with the purpose of function of breath detection when movement.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, obtains other drawings based on these drawings the scope for still falling within the utility model.
Fig. 1 is the plane structure chart of the intelligent mask provided by the embodiment of the utility model for breathing detection；
Fig. 2 is the working principle diagram of breathing detection module in Fig. 1；
Fig. 3 is the system structure diagram of breathing detection module in Fig. 1；
Fig. 4 be in Fig. 1 breathing detection module using AD sampled value in the case of different lower arm resistance and reference voltage relative to
The schematic diagram of the change rate of temperature.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
It as shown in Figure 1 to Figure 3, is a kind of intelligent mask for breathing detection provided in the utility model embodiment,
Including mask body T, mask body T is equipped with breather valve H, and breathing detection module M is integrated on breather valve H；Wherein,
Breathing detection module M includes:
ARM chip 1 with function of Bluetooth communication and control function；
For perceiving the temperature variations of breather valve H overdraught and being converted into the temperature sensor 2 of voltage signal, the temperature
Degree sensor 2 is set as NTC thermistor；
The resistance selection of temperature detection sensitivity is promoted for carrying out corresponding partial pressure to voltage signal in NTC thermistor
Circuit 3, the resistance selection circuit 3 are formed by multiple lower arm resistance (R1-Rn)；Wherein, one end of multiple lower arm resistance (R1-Rn)
Individually be connected with ARM chip 1 respectively and on or off ground connection controlled by ARM chip 1, multiple lower arm resistance (R1-Rn) it is another
One end is connected after connecting together with NTC thermistor and ARM chip 1 is connected；
For the power supply 4 of power supply, the power supply 4 and temperature sensor 2, resistance selection circuit 3 and ARM chip 1
It is connected；
Charging circuit 5 for charging to power supply 4, the charging circuit 5 are connected with power supply 4；And
Antenna 6, the antenna 6 are connected with ARM chip 1；.
In the utility model embodiment, the module size of breathing detection module M is 24mm × 20mm × 8mm, weight
4.6g, wherein power supply is the battery of 2.9g, and other hardware circuits are 1.7g.
In the utility model embodiment, the type selecting of NTC thermistor mainly considers that B value (heat sensitive index), hot time are normal
Three number, nominal resistance parameters；B value reflects the resistance variations between two temperature, and the bigger resistance value of B value varies with temperature brighter
Aobvious, measurement gain is higher；The speed that thermal time constant reflection resistance value varies with temperature, the smaller thermal capacity of thermistor volume are got over
Small, correspondingly resistance value varies with temperature faster；Nominal resistance is inversely proportional with power consumption, to reduce power consumption, is meeting ADC input impedance
Nominal resistance big as far as possible should be selected in the case where it is required that.Amid all these factors, we select model Murata company
NCP15WL473J03RC, the temperature-sensitive that corresponding B value is 4485, nominal resistance is 47K Ω, actual measurement thermal time constant is 0.27s
Resistance value is converted into voltage by gain control circuit and is sampled by AD by resistance as temperature sensor 2.
In the utility model embodiment, to extend system cruise duration as far as possible, we select model Dialog
The DA14580 of Semiconductor is as the ARM chip 1 with function of Bluetooth communication, the 5.1mA under 0dBm transmission power
Emission current and 4.8mA reception electric current.Far below TI CC2640, (6.1mA emission current, 5.9mA are received the ARM chip 1
Electric current), the work electricity of mainstreams bluetooth SOC under the same conditions such as nRF51822 (8.0mA emission current, 9.7mA receive electric current)
Stream, and quiescent current is down to 1.2uA.In the development phase, we store Software Mirroring, exploitation using W25X20CL SPI Flash
We replace the flash storage to reduce with OTP (One Time Programmable) memory of DA14580 after the completion
Cost.
In the utility model embodiment, for power consumption consideration, we select resistor voltage divider circuit, and pass through control lower arm
Resistance promotes detection sensitivity.Wherein, upper arm uses NTC thermistor, resistance value RtWith the relationship of absolute temperature T are as follows:
Wherein: R0The resistance value of thermistor, T at a temperature of being 25 DEG C0=298.15K is corresponding absolute temperature, and B is temperature-sensitive
Resistance B value.
At this point, corresponding resistance value is 4M Ω, 2M Ω, 1M Ω, 500K Ω, 250K there are six multiple lower arm resistance
Ω and 125K Ω.So that 0-40 DEG C of temperature range changes lower arm resistance R every the different resistor coupled in parallel of 4 DEG C of selectionsdResistance value, from
And higher temperature detection sensitivity can be obtained in 0-40 DEG C of temperature range.The selection of resistance passes through the GPIO of ARM chip 1
It realizes, when GPIO output 1, corresponding resistance eutral grounding, the resistance is selected, and when GPIO is in input state, corresponding resistance
It is equivalent to and connects infinite resistance ground connection, lower arm resistance will not be had an impact.Specific selection strategy are as follows: when AD sampling
When voltage is greater than 1.15V, small one grade of lower arm resistance is selected, output voltage full scale is prevented；When the highest electricity that AD is sampled in 5 seconds
It forces down when 1.1V, selects big one grade of lower arm resistance, improve temperature detection sensitivity；Upshift and downshift voltage difference 0.05V structure
At hysteresis loop, avoid switching excessively frequent.
Fig. 4 gives using change rate of the AD sampled value relative to temperature in the case of different lower arm resistance and reference voltage,
Higher temperature detection sensitivity can only be obtained within the scope of certain temperature using fixed lower arm resistance；And this works uses
Lower arm resistance selection circuit and strategy have benefited from the reasonable switching of resistance, can be obtained close to ideal situation in each temperature
(RdWith RtConsecutive variations make voltage output be fixed as 1.2V to obtain highest detection sensitivity) temperature detection sensitivity.
In the utility model embodiment, power supply 4 uses 100mAh lighium polymer rechargeable battery, due to charging electricity
Smaller (common lithium battery maximum charging current is 0.5C, and 100mAh battery is 50mA) is flowed, we select, and structure is simple, price is low
Honest and clean BQ21040 linear-charging IC constructs charging circuit 5, and maximum charging current is restricted to 45mA, avoids excessive charging
Electric current is damaged to battery.
Implement the utility model embodiment, has the following beneficial effects:
The utility model is integrated with breathing detection module on the breather valve of mask body, by selecting in breathing detection module
NTC thermistor acquires and passes through the ARM chip controls in breathing detection module to the temperature variations of breather valve
The number of lower arm resistance adjusts temperature detection sensitivity intelligently to realize to the breathing inspection under motion state in resistance selection circuit
It surveys, to reach not by human motion and Environmental Noise Influence, is also equipped with the purpose of function of breath detection when movement.
Above disclosed is only a kind of preferred embodiment of the utility model, certainly cannot be practical to limit with this
Novel interest field, therefore equivalent variations made according to the claim of the utility model still belong to what the utility model was covered
Range.
Claims (6)
1. a kind of intelligent mask for breathing detection, which is characterized in that including mask body, the mask body is equipped with and exhales
Valve is inhaled, and is integrated with breathing detection module on the breather valve；Wherein,
The breathing detection module includes:
ARM chip with function of Bluetooth communication and control function；
For perceiving the temperature variations of breather valve overdraught and being converted into the temperature sensor of voltage signal, the temperature is passed
Sensor is set as NTC thermistor；
The resistance selection of temperature detection sensitivity is promoted for carrying out corresponding partial pressure to voltage signal in the NTC thermistor
Circuit, the resistance selection circuit are formed by multiple lower arm resistance；Wherein, one end of the multiple lower arm resistance respectively with it is described
ARM chip is individually connected and ground connection is connected by the ARM chip controls or is turned off, and the other end of the multiple lower arm resistance simultaneously connects
It is connected after together with the NTC thermistor and the ARM chip is connected；
For the power supply of power supply, the power supply and the temperature sensor, resistance selection circuit and ARM chip are homogeneous
Even；
Charging circuit for charging to the power supply, the charging circuit are connected with the power supply；And
Antenna, the antenna are connected with the ARM chip.
2. being used for the intelligent mask of breathing detection as described in claim 1, which is characterized in that the type of the NTC thermistor
It number is the NCP15WL473J03RC of Murata company, corresponding B value is 4485, nominal resistance is 47K Ω, surveys the hot time
Constant is 0.27s.
3. being used for the intelligent mask of breathing detection as claimed in claim 2, which is characterized in that the model of the ARM chip
The DA14580 of Dialog Semiconductor, the reception of the emission current and 4.8mA of 5.1mA under 0dBm transmission power
Electric current.
4. being used for the intelligent mask of breathing detection as claimed in claim 3, which is characterized in that the multiple lower arm resistance has six
A, corresponding resistance value is 4M Ω, 2M Ω, 1M Ω, 500K Ω, 250K Ω and 125K Ω.
5. being used for the intelligent mask of breathing detection as claimed in claim 4, which is characterized in that the power supply uses
100mAh lighium polymer rechargeable battery.
6. as claimed in claim 5 be used for breathing detection intelligent mask, which is characterized in that the charging circuit by
BQ21040 linear-charging IC is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821192020.3U CN209106371U (en) | 2018-07-26 | 2018-07-26 | A kind of intelligent mask for breathing detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821192020.3U CN209106371U (en) | 2018-07-26 | 2018-07-26 | A kind of intelligent mask for breathing detection |
Publications (1)
| Publication Number | Publication Date |
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| CN209106371U true CN209106371U (en) | 2019-07-16 |
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ID=67196376
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821192020.3U Active CN209106371U (en) | 2018-07-26 | 2018-07-26 | A kind of intelligent mask for breathing detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230552A (en) * | 2021-05-13 | 2021-08-10 | 吉林师范大学 | Physical function breathing regulator for physical exercise |
-
2018
- 2018-07-26 CN CN201821192020.3U patent/CN209106371U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230552A (en) * | 2021-05-13 | 2021-08-10 | 吉林师范大学 | Physical function breathing regulator for physical exercise |
| CN113230552B (en) * | 2021-05-13 | 2022-04-08 | 吉林师范大学 | Physical function breathing regulator for physical exercise |
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