CN115179890A - Respiration monitoring system and method based on intelligent sensor - Google Patents
Respiration monitoring system and method based on intelligent sensor Download PDFInfo
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- CN115179890A CN115179890A CN202211035228.5A CN202211035228A CN115179890A CN 115179890 A CN115179890 A CN 115179890A CN 202211035228 A CN202211035228 A CN 202211035228A CN 115179890 A CN115179890 A CN 115179890A
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- radar sensor
- sensor
- monitoring system
- automobile
- radar
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 9
- 235000015429 Mirabilis expansa Nutrition 0.000 claims description 6
- 244000294411 Mirabilis expansa Species 0.000 claims description 6
- 235000013536 miso Nutrition 0.000 claims description 6
- 230000001427 coherent effect Effects 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 2
- 230000000241 respiratory effect Effects 0.000 claims 1
- 206010021143 Hypoxia Diseases 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
- B60R21/01512—Passenger detection systems
- B60R21/0153—Passenger detection systems using field detection presence sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a respiration monitoring system and method based on an intelligent sensor, wherein the system comprises an MCU host and a radar sensor for detecting a human body, the radar sensor comprises a main radar sensor and a secondary radar sensor, the main radar sensor and the secondary radar sensor are electrically connected with the MCU host, and the MCU host is electrically connected with an automobile external circulation starting control part. The invention is characterized in that a radar sensor for detecting a human body is arranged at the top of an automobile, and the sensor can automatically open the external circulation of the automobile under the condition of sensing the existence of a person in the automobile, so that outside air enters the automobile, and the death of the person in the automobile due to oxygen deficiency is prevented.
Description
Technical Field
The invention relates to the technical field of monitoring, in particular to a respiration monitoring system and method based on an intelligent sensor.
Background
The environment in the vehicle is closed, and if a person is in the closed vehicle for a long time, oxygen deficiency can be caused, so that life danger is caused.
There are no high-precision sensors available in today's automobiles for detecting the presence of a human body, which makes no one very good interaction between the automobile and the human body. People leave the vehicle and do not lock the door, and the vehicle does not know; people sleep in the vehicle without external circulation, and the vehicle does not know.
In order to fundamentally prevent such problems, a large article must be made from the aspect of automobile safety.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a respiration monitoring system and method based on an intelligent sensor to solve the deficiencies of the prior art.
In order to achieve the purpose, the invention provides a respiration monitoring system based on an intelligent sensor, which comprises an MCU host and a radar sensor for detecting a human body, wherein the radar sensor comprises a main radar sensor and a secondary radar sensor, the main radar sensor and the secondary radar sensor are electrically connected with the MCU host, and the MCU host is electrically connected with an automobile external circulation starting control part.
Further, the master radar sensor and the slave radar sensor adopt A111 pulse coherent radar sensors.
Further, the MCU host adopts a 32-bit ARMCortex-M7 ATSAME70Q20A microprocessor.
Furthermore, the master radar sensor and the slave radar sensor are powered by a 1.8V single power supply.
Further, the master radar sensor and the slave radar sensor are connected with a 20-80MHz reference clock.
The invention also provides a working method of the intelligent sensor-based respiration monitoring system, wherein the master radar sensor and the slave radar sensor monitor whether a person is in the vehicle or not in real time, and when the person is monitored, a signal is sent to the MCU host computer, and the MCU host computer controls the external circulation of the vehicle to be started; when the master radar sensor and the slave radar sensor monitor in real time, the input MOSI and the output MISO of serial data transmission of the radar sensors are synchronized by the SPI _ CLK, and a slave selection signal SS must be low in the data transmission process; MOSI reads data at the rising edge of SCLK, MISO changes the value of data at the falling edge of SCLK, and SS is pulled high after data transmission is finished.
The invention has the beneficial effects that:
the invention is characterized in that a radar sensor for detecting a human body is arranged at the top of an automobile, and the sensor can automatically open the external circulation of the automobile under the condition that the sensor senses that a person is in the automobile, so that outside air enters the automobile, and the person in the automobile is prevented from being killed due to oxygen deficiency.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a schematic diagram of the connection of the sensor of the present invention to a power supply and clock.
Fig. 3 is a system control timing diagram of the present invention.
FIG. 4 is a graph showing the results of the detection according to the present invention.
Detailed Description
As shown in figure 1, the invention provides a respiration monitoring system based on an intelligent sensor, which comprises an MCU host and a radar sensor for detecting a human body, wherein the radar sensor comprises a main radar sensor and a secondary radar sensor, the main radar sensor and the secondary radar sensor are electrically connected with the MCU host, and the MCU host is electrically connected with an automobile external circulation starting control part.
In this embodiment, a master radar sensor and a slave radar sensor are a111 pulse coherent radar sensors. The detection is carried out by adopting a PCR (pulse coherence) radar sensor, the sensor works in an ISM free frequency band of 60GHZ, and the principle is that the ultra-wideband is utilized to carry out high-precision micro-motion detection, so that the breathing of people can be detected. It features that it can be installed in hidden mode through plastic casing and is beautiful. Can be detected for a moving person, and can be detected for a still or a very asleep person.
A111-pulse coherent radar sensor of Acconeer is selected as a main chip, a 60GHz radar system is optimized for high precision and ultra-low power consumption, and a single-package solution integrating a baseband, a radio frequency front end and an antenna package (AiP) is provided, so that the sensor can be easily integrated into any portable battery driving device, the technical development threshold is greatly reduced, and the sensor is simple and easy to use.
A111 is based on advanced proprietary sensor technology, has picosecond time resolution, is capable of measuring absolute distances with millimeter accuracy, has a maximum range of 2 meters (1), and has a configurable update rate.
The a111 radar is not affected by any natural interference sources, such as noise, dust, color, and direct or indirect light.
In this embodiment, the MCU host uses a 32-bit ARMCortex-M7 ATSAME70Q20A microprocessor. ATSAME70Q20A is equipped with 384 KB SRAM and 1 MB flash with a maximum core processor frequency of 300 MHz.
As shown in fig. 2, the master radar sensor and the slave radar sensor are powered by a 1.8V single power supply, and a rechargeable battery is added on the basis of the original hardware, so that the battery can be charged during the running process of the automobile, and the electric quantity in the battery is fully charged when the automobile stops. Meanwhile, the power supply voltage required by the detection equipment is very small and is only 1.8V, so that the normal communication of the detection equipment can be completely ensured. The master radar sensor and the slave radar sensor are connected with a 20-80MHz reference clock, and a Serial Peripheral Interface (SPI) is a 4-wire serial bus used for configuring and reading the output of the A111 radar sensor. The a111 radar sensor is an SPI slave, connected to an SPI master (master MCU), and allows multiple devices to be connected on the same SPI bus with dedicated slave select signals. The sensor supports enabling and interrupting as interrupt signals, and the interrupt signals are always output and used as interrupts in the host MCU. The sensor supports an optional control signal that is configured by software, for example, to control the operating state of the sensor to be idle in a sleep state.
The invention also provides a working method of the intelligent sensor-based respiration monitoring system, wherein the master radar sensor and the slave radar sensor monitor whether a person is in the vehicle or not in real time, and when the person is monitored, a signal is sent to the MCU host computer, and the MCU host computer controls the external circulation of the vehicle to be started; as shown in fig. 3, when the master radar sensor and the slave radar sensor monitor in real time, the input MOSI and the output MISO of serial data transmission of the radar sensors are synchronized by the SPI _ CLK, and the slave selection signal SS must be low during data transmission; MOSI reads data at the rising edge of SCLK, MISO changes the value of data at the falling edge of SCLK, and SS is pulled high after data transmission is finished.
As shown in fig. 4, the waveform curves detected by the detection device are greatly different between the presence and absence of a person in the vehicle, and exhibit a gentle trend of change when no person is present and a greatly drastic change when a person is detected in the vehicle.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The utility model provides a respiratory monitoring system based on intelligent sensor which characterized in that: including MCU host computer and the radar sensor who is used for detecting the human body, radar sensor includes main radar sensor, follows radar sensor, main radar sensor, follow radar sensor and MCU host computer electricity are connected, the MCU host computer is connected with the outer circulation of car opening control part electricity.
2. The intelligent sensor-based respiration monitoring system of claim 1, wherein: the master radar sensor and the slave radar sensor adopt A111 pulse coherent radar sensors.
3. The intelligent sensor-based respiration monitoring system of claim 1, wherein: the MCU host adopts a 32-bit ARMCortex-M7 ATSAME70Q20A microprocessor.
4. The smart sensor-based respiration monitoring system of claim 1 wherein: the main radar sensor and the auxiliary radar sensor adopt 1.8V single power supply for power supply.
5. The intelligent sensor-based respiration monitoring system of claim 1, wherein: the master radar sensor and the slave radar sensor are connected with a 20-80MHz reference clock.
6. A working method of a respiration monitoring system based on an intelligent sensor is characterized in that: the master radar sensor and the slave radar sensors monitor whether a person is in the automobile or not in real time, and when the fact that the person is in the automobile is monitored, signals are sent to the MCU host computer, and the MCU host computer controls the external circulation of the automobile to be started; when the master radar sensor and the slave radar sensor monitor in real time, the input MOSI and the output MISO of serial data transmission of the radar sensors are synchronized by the SPI _ CLK, and a slave selection signal SS must be low in the data transmission process; MOSI reads data at the rising edge of SCLK, MISO changes the value of data at the falling edge of SCLK, and SS is pulled high after data transmission is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211035228.5A CN115179890A (en) | 2022-08-26 | 2022-08-26 | Respiration monitoring system and method based on intelligent sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211035228.5A CN115179890A (en) | 2022-08-26 | 2022-08-26 | Respiration monitoring system and method based on intelligent sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115179890A true CN115179890A (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211035228.5A Pending CN115179890A (en) | 2022-08-26 | 2022-08-26 | Respiration monitoring system and method based on intelligent sensor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206856438U (en) * | 2017-06-15 | 2018-01-09 | 广东轻工职业技术学院 | A kind of in-car delay personnel self-help apparatus |
| CN111907453A (en) * | 2019-05-10 | 2020-11-10 | 现代自动车株式会社 | Vehicle and method for protecting a person remaining in a vehicle |
| CN112767661A (en) * | 2020-12-29 | 2021-05-07 | 上海企树网络科技有限公司 | Internal organism detection alarm system of automobile |
| CN114932858A (en) * | 2022-06-01 | 2022-08-23 | 四川野马汽车股份有限公司 | Monitoring system and method for preventing child from being locked in vehicle by mistake |
-
2022
- 2022-08-26 CN CN202211035228.5A patent/CN115179890A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206856438U (en) * | 2017-06-15 | 2018-01-09 | 广东轻工职业技术学院 | A kind of in-car delay personnel self-help apparatus |
| CN111907453A (en) * | 2019-05-10 | 2020-11-10 | 现代自动车株式会社 | Vehicle and method for protecting a person remaining in a vehicle |
| US20200353940A1 (en) * | 2019-05-10 | 2020-11-12 | Hyundai Motor Company | Vehicle and method for protecting person left in vehicle |
| CN112767661A (en) * | 2020-12-29 | 2021-05-07 | 上海企树网络科技有限公司 | Internal organism detection alarm system of automobile |
| CN114932858A (en) * | 2022-06-01 | 2022-08-23 | 四川野马汽车股份有限公司 | Monitoring system and method for preventing child from being locked in vehicle by mistake |
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Application publication date: 20221014 |