CN116158640A - Intelligent mattress based on intensive distributed optical fiber sensing technology and monitoring method - Google Patents
Intelligent mattress based on intensive distributed optical fiber sensing technology and monitoring method Download PDFInfo
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
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- H—ELECTRICITY
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- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses an intelligent mattress based on a dense distributed optical fiber sensing technology, which comprises a sensing optical cable arranged in the mattress, wherein the sensing optical cable is positioned below the surface layer of the mattress, optical fiber connectors are respectively arranged at two ends of the sensing optical cable and are matched with optical fiber interfaces of demodulation equipment, a demodulator is connected with a cloud server through a built-in wifi module of the demodulator, and the cloud server is connected with APP software information for data display and analysis at a mobile phone end; the sensing optical cable is sequentially bent along the length direction to form a plurality of rings, and a space is arranged between every two adjacent rings. The invention provides a dense distributed optical fiber technology, which adopts a double-core optical fiber as a temperature, vibration and strain sensor and is applied to a household intelligent mattress. The innovative optical fiber ring-shaped processing technology is adopted, so that the touch habit of sleeping of a human body is met, the density of the sensor is increased, and the accuracy of data is improved.
Description
Technical Field
The invention relates to an intelligent mattress based on a dense distributed optical fiber sensing technology and a monitoring method.
Background
The life of a person spends one third of the time in the bed, the sleeping is just needed by the human body, and the bed is just needed by the human body to sleep, so the necessity is obvious. In order to make people feel well asleep, the mattress industry has actually struggled for over 1 century, undergoing three revolution.
The first time is the Simmons age, the Simmons mattress in the open period is reformed to fly to the sea and come into the country, and the first bedding revolution in China is driven, and the bedding enters the Simmons age. At this time the mattress product is mainly upgraded around the springs, replacing the traditional wood boards, and thus the bed is resilient.
The second time is the "comfort era", which is the second revolution mainly driven by the application of independent springs and natural latex.
The third time is the "deep sleep age" and the frequent application of high-tech and memory sponge technology, which pushes sleep to an age where consumers are thoroughly respected and cared.
However, at present, an electrical sensor is generally adopted in the intelligent mattress, because the sensor needs to be powered, and the sensor is implanted into the bed body for a long time, on one hand, the sensor is too many in number and easy to fail, and on the other hand, the sensor is low in concentration and high in cost.
Patent publication No. CN 203203730U: the human body lying pressure distribution measuring device based on the fiber bragg grating only uses a fiber bragg grating sensor to measure human body lying pressure distribution. It is not an intelligent mattress based on intensive distributed fiber optic sensing technology. Patent publication number CN112971723 a: an intelligent remote home care system is mainly used for monitoring vital signs of old people, is not an intelligent mattress based on a dense distributed optical fiber sensing technology, and performs fire early warning in a smoke detector mode without using optical fibers for fire alarm. Patent publication No. CN 209404749U: the information acquisition device relates to the arrangement of annular optical fibers, but only aims at the distribution of optical fiber sensing under a mattress, the text is described as annular optical fibers, but the text is actually in a serpentine reciprocating arrangement of optical fibers, and a strain sensor of the information acquisition device is an optical fiber sensor, but vibration detection adopts an optical fiber sensor instead of a vibration sensitive sensor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides an intelligent mattress based on a dense distributed optical fiber sensing technology, and provides an intelligent mattress based on the dense distributed optical fiber sensing technology, which is applied to a household intelligent mattress by adopting a double-core optical fiber as a temperature, vibration and strain sensor. The innovative optical fiber ring-shaped processing technology is adopted, so that the touch habit of sleeping of a human body is met, the density of the sensor is increased, and the accuracy of data is improved.
In order to achieve the above purpose, the technical scheme of the invention is to design an intelligent mattress based on a dense distributed optical fiber sensing technology, which comprises a sensing optical cable arranged in the mattress, wherein the sensing optical cable is positioned below the surface layer of the mattress, two ends of the sensing optical cable are respectively provided with an optical fiber connector, the optical fiber connectors are matched with optical fiber interfaces of demodulation equipment, a demodulator is connected with a cloud server through a built-in wifi module of the demodulator, and the cloud server is connected with APP software information for data display and analysis at a mobile phone end;
the sensing optical cable is sequentially bent along the length direction to form a plurality of rings, and a space is arranged between every two adjacent rings. The cloud server stores and processes the information and then sends the data to the mobile phone APP; the length of the mattress is 2 meters and the width is 1.8 meters; 1440 rings were provided, each fiber ring and extending on both sides had an average circumference of 20cm. The innovative optical fiber ring-shaped processing technology is adopted, so that the touch habit of sleeping of a human body is met, the density of the sensor is increased, and the accuracy of data is improved.
The further technical scheme is that the demodulator comprises a distributed optical fiber temperature measuring demodulator and a distributed optical fiber vibration and strain demodulator; two optical fibers are arranged in the sensing optical cable, two optical fibers at any end of the sensing optical cable with two cores are respectively connected with an optical fiber connector, and the two optical fiber connectors at any end are respectively connected with the distributed optical fiber temperature measuring demodulation instrument and the distributed optical fiber vibration and strain demodulation instrument. The distributed optical fiber vibration and strain demodulation instrument comprises a case, wherein two optical path modules, namely a vibration module and a strain module, are arranged in the case, and after the two optical path modules are processed, data are summarized and sent into a set of software system. After the temperature and vibration of any position are collected, the software comprehensively alarms and judges (a digital signal is formed after analysis by demodulation modules in the two optical path modules and is sent to a data analysis and processing module, the data analysis and processing module sends data to a cloud server through a wifi module, and the cloud server stores and processes information and then sends the data to APP software of a mobile phone terminal, and comprehensively alarms according to the setting of the APP).
The other technical scheme is that the demodulator comprises a distributed optical fiber temperature measuring demodulator, a distributed optical fiber vibration demodulator and a distributed optical fiber strain demodulator; three optical fibers are arranged in the sensing optical cable, the three optical fibers at any end of the sensing optical cable with three cores of one cable are respectively connected with an optical fiber connector, and the three optical fiber connectors at any end are respectively connected with the distributed optical fiber temperature measuring demodulation instrument, the distributed optical fiber vibration demodulation instrument and the distributed optical fiber strain demodulation instrument. The model of the distributed optical fiber vibration demodulator is optical fiber vibration BLY-DAS-5S, and the model of the distributed optical fiber strain demodulator is optical fiber strain BOTDA1000.
The further technical proposal is that the diameters of the rings are the same and are all 5cm; the optical fiber connector is arranged in the mattress; the distributed optical fiber temperature measuring demodulator is a high-spatial resolution distributed optical fiber sensing demodulator. The optical fiber connector of the optical fiber connector and the demodulation equipment is connected tightly through FC/APC, or E2000 (FC (ferrule contactor) is an optical fiber jumper connector, is an optical fiber connector with circular threads), but the installation time is long because of rotation, the optical fiber connector is commonly used for an optical fiber distribution frame APC (Angled Physical Contact) and is an optical fiber end face grinding mode, and is usually ground into an 8-degree inclined plane, the APC end face return loss is-60 dB.E2000 optical fiber connector adopts a push-pull locking arrangement, is easy to install, a shell is made of engineering plastics, is convenient for dense installation, is mainly used for single-mode light, and is provided with a dust cover. The high-spatial-resolution distributed optical fiber sensing demodulator for temperature sensing adopts a unified scheme integrating optical time domain demodulation and optical frequency domain demodulation, and the main body structure of the optical fiber sensing scanning radar system based on the Raman optical frequency domain and optical time domain technology is specifically described in another application of the applicant on the same day: the system comprises a light source, a first 1X2 optical switch, a second 1X2 optical switch, a pulse scanning module, a network analysis and data acquisition unit, a waveform modulator, an electro-optic modulator, a beam splitter, a first photomultiplier, a second photomultiplier, a third photomultiplier, a coupler, a Raman filter and a sensing optical fiber; the light source is in optical signal connection with the pulse scanning module, the pulse scanning module is connected with the network analysis and data acquisition unit, and the network analysis and data acquisition unit is used for carrying out pulse modulation on the light source and inputting the light after pulse modulation into the first 1X2 optical switch; the network analysis and data acquisition unit is also connected with the input end of the first 1X2 optical switch; one output end of the first 1X2 optical switch is connected with the input end of the coupler, and the other output end of the first 1X2 optical switch is connected with the optical input end of the electro-optical modulator; the optical output end of the electro-optical modulator is connected with the optical splitter, the output end of the waveform modulator is connected with the control input end of the electro-optical modulator, and the network analysis and data acquisition unit is also connected with the input end of the waveform modulator; the optical splitter is respectively connected with the coupler and the first photomultiplier, the output end of the first photomultiplier is connected with the data acquisition end of the network analysis and data acquisition unit, the two output ports of the coupler are respectively connected with the Raman filter and the second 1X2 optical switch, the two output ports of the Raman filter are respectively connected with the second photomultiplier and the third photomultiplier, and the output ends of the second photomultiplier and the third photomultiplier are both connected with the data acquisition end of the network analysis and data acquisition unit; two output ends of the second 1X2 optical switch are respectively connected with two input ends of the annular sensing optical fiber; the demodulation principle is as follows: when the optical time domain demodulation mode is used, the system light source is connected with a ps precision pulse scanning module, the light source can be subjected to pulse modulation through a network analysis and data acquisition unit, the pulse light source is selected to directly enter a coupler through a 1X2 optical switch, an optical fiber entering a port 1 or a port 2 is determined through another optical switch at the coupler end, a ps precision rising edge narrow pulse is sent into a sensing optical fiber with the thickness of 1m-20000m, then the scattered Raman scattered light carrying temperature information is sent into a Raman optical filter, the Raman scattered light is separated into reference light of Stokes sotkes and anti-Stokes light with temperature information, the reference light and the anti-Stokes light with the temperature information are respectively sent into photomultiplier (APD 2 and APD 3), high-speed data acquisition of the data acquisition unit is carried out through network analysis, digital signals are formed, and the digital information is processed, and the temperature information is analyzed. The Stokes Raman scattered light is used as a reference channel, and the anti-Stokes Raman scattered signal light is compared with the Stokes Raman scattered signal light, so that the instability of a light source and the influence caused by coupling loss, optical fiber joint loss, optical fiber bending loss, optical fiber transmission loss and the like in the optical fiber transmission process are effectively eliminated. When the optical frequency domain demodulation mode is adopted, the 1X2 optical switch is switched to the electro-optical modulator, the network analysis and data acquisition unit directly controls the electro-optical modulator through the waveform modulator, and the electro-optical modulator is controlled through 99:1, sending 1% of modulated intrinsic optical signals into a photomultiplier APD1, and 99% of modulated optical signals pass through another optical switch at a coupler end to determine that the modulated intrinsic optical signals enter a sensing optical fiber of a port 1 or a port 2, meanwhile, raman scattered light carrying temperature information passes through the coupler and enters a Raman optical filter to be separated into reference light of Stokes sotkes and anti-Stokes light with temperature information, and sending the reference light and the anti-Stokes light into photomultiplier APDs (APD 2 and APD 3), respectively, demodulating the intrinsic light passing through the APD1 and the anti-Stokes light passing through the APD2 Stokes sotkes and the anti-Stokes light passing through the APD3 through a network analysis and data acquisition unit, forming digital signals through conversion and anti-Fourier conversion, and analyzing the digital information to obtain the temperature information. The main principle of raman optical frequency domain temperature demodulation is that a laser with frequency f0 is modulated by a sinusoidal signal with frequency fm in an electro-optical modulator and then coupled into an optical fiber at z=0, f m is a set of discrete equidistant modulation frequencies, stokes and anti-Stokes optical power generated by a signal generator is detected by an avalanche photodiode, and the power of the input laser (i.e. Stokes light) as a reference is detected by an avalanche photodiode. And detecting the obtained power, and finally obtaining the spatial distribution of the temperature through a data processing system.
The cloud server is connected with the intelligent home system platform information.
The further technical scheme is that a laser is arranged in the distributed optical fiber vibration and strain demodulation instrument, the laser is connected with a coupler, the coupler is connected with a demodulation module, and the demodulation module is connected with a data analysis processing module; an alarm module connected with cloud server information is further arranged in the distributed optical fiber vibration and strain demodulator, and the alarm module sends real-time early warning signals to a monitoring room through an Ethernet or RS485 or wireless connection module; the optical fiber is connected with the coupler.
The further technical proposal is that the diameter of the ring positioned at the central part of the mattress is 5cm, and the diameter of the ring positioned near the edge part of the mattress is 7-9 cm. Considering that a person often sits at the bedside in a bedroom, the diameter of the ring at the edge of the mattress is set larger, so that the ring of the optical cable is prevented from being easily damaged when the edge of the mattress is stressed.
The further technical proposal is that the ring near the edge of the mattress is obliquely arranged, and the oblique direction is gradually downward inclined from the edge of the mattress to the central direction. Considering that a person sitting at the bedside often occurs in a bedroom, the diameter of the ring at the edge of the mattress is not only set larger, but also inclined (but due to the angle setting, strain data detected at the edge need to be corrected to a certain extent to ensure that the strain data is detected more accurately), so that the ring of the optical cable is prevented from being easily damaged when the edge of the mattress is stressed.
The invention also provides a technical scheme that the intelligent mattress monitoring method based on the intensive distributed optical fiber sensing technology comprises the following steps:
the sensing optical cable detects temperature, vibration and strain data of a human body during sleeping, a digital signal is formed after analysis by the demodulation module and is sent to the data analysis processing module, the data analysis processing module sends the data to the cloud server through the wifi module, and the cloud server stores and processes information and then sends the data to APP software of a mobile phone terminal; the cloud server also sends the data to the intelligent home system platform.
According to the further technical scheme, the intelligent home system platform compares the temperature data of the environment where the transmitted person is located with data stored in a database in the intelligent home system platform and then sends out an instruction for adjusting an air conditioner or a floor heater, and the air conditioner or the floor heater adjusts the corresponding temperature;
a database is arranged in the distributed optical fiber vibration and strain demodulation instrument or the distributed optical fiber vibration demodulation instrument, and the database stores vibration data of the turning-over action of a person vibrating at high frequency and vibration data of earthquake vibrating at infrasound; the data analysis processing module is used for comparing the vibration signals acquired by the optical fibers with data stored in the database and sending signals to the alarm module.
The invention has the advantages and beneficial effects that: the common optical fiber is particularly advantageous as a novel sensor of a mattress. Firstly, pure optical fiber materials and passive materials have no potential damage to human body such as electric radiation, and meanwhile, the sensor is of a cable type structure, is soft, is easy to integrate with a mattress, forms a close-packed sensor array, and is a sensor unit every 5 cm. A single common mattress can integrate tens of thousands of optical fiber sensors for monitoring the sleeping state of a person in real time.
Firstly, a dense distributed optical fiber technology is provided, a double-core optical fiber is adopted as a temperature, vibration and strain sensor, and the optical fiber sensor is applied to a household intelligent mattress.
The density of the sensors reaches that of a common single mattress, 14400 optical fiber sensors are integrated, wherein the number of the temperature sensors 7200 and the number of the vibration and strain sensors 7200 are integrated.
The innovative optical fiber ring-shaped processing technology is adopted, so that the touch habit of sleeping of a human body is met, the density of the sensor is increased, and the accuracy of data is improved.
The temperature sensor provides effective analysis data for human habit through real-time monitoring of updating once in 1 second on average in 24 hours, and has larger data value. If the temperature monitoring is intensive, the human body temperature distribution, night turn-over habit and early warning of fever of adults and children can be known in real time, and a large amount of useful medical data is provided for individuals through the accumulation analysis of the human body temperature data in the long-term month and the long-term month, so as to assist medical examination.
The vibration and strain data can provide micro-fibrillation and respiratory reaction data in the sleeping process of the human body, the distributed strain data can provide skeleton change and lumbar vertebra state data of the human body for the individual, and the wrong sleeping posture is corrected through medical analysis.
Through long-term big data analysis, whether the bed meets the current requirements of lumbar bones of human body can be known, and effective data support is provided for further customized softness, material characteristics and the like of the bed.
Through intensive sensing array, at ordinary times, but real-time supervision mattress place indoor environment's temperature change, say open warm in winter, open the air conditioner in summer, the influence that the temperature non-uniformity that corresponds the bed produced through big data analysis air conditioner air outlet to the human body. The floor heating in winter is moderate in temperature and normal in temperature uniformity.
The distributed acoustic vibration sensing system DAS has earthquake monitoring function, can provide a certain earthquake early warning, especially in areas with frequent earthquakes, the earthquakes often occur in night sleeping states, and when vibration which is not perceived by a human body is generated, a large-scale vibration sensor array under a mattress can finish early warning in advance, and an alarm device is started.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an intelligent mattress based on dense distributed fiber optic sensing technology in accordance with the present invention;
FIG. 2 is a schematic diagram of the demodulator of FIG. 1;
fig. 3 is a schematic diagram of a second embodiment of the present invention.
In the figure: 1. a sensing optical cable; 2. a mattress; 3. a ring; 4. a distributed optical fiber temperature measuring demodulator; 5. a distributed optical fiber vibration and strain demodulation instrument; 6. a laser; 7. a coupler; 8. a demodulation module; 9. and the data analysis processing module.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Embodiment one:
the invention relates to an intelligent mattress based on a dense distributed optical fiber sensing technology, which comprises 6 parts, namely a cable double-core common sensing optical fiber, a common mattress, an optical fiber connector, a distributed optical fiber temperature measuring demodulator, a distributed optical fiber vibration and strain demodulator and APP software for displaying and analyzing mobile phone end data.
1. All the sensing optical cables 1 are distributed in a ring shape with the diameter of 5cm (the specific preparation method is that the optical cables are wound around an insulating PVC material and fixedly bonded on a PVC material sheet), as shown in figure 1, for a mattress 2 with the length of 2 meters and the width of 1.8 meters. The total number of the intelligent mattress is 1440, the average circumference of the extension of each optical fiber ring 3 and two sides is 20cm, the average of each optical fiber ring is 5cm as a sensor of an independent channel through the distributed setting of the channel of the demodulation equipment, the whole intelligent mattress is provided with 7200 temperature sensors and 7200 strain and vibration sensors, the total number of the sensors reaches 14400, and the number of the sensors is as low as below 0.1 yuan.
2. The combination of the common mattress and the optical fiber sensor adopts an annular structure, can be produced in batch by adopting an industrial automatic production process and can be produced by using a simple process.
3. The fiber connector is placed in the mattress, when the fiber connector is installed, the fiber connector of the fiber connector and demodulation equipment is directly and physically connected through FC/APC or E2000 connector, in environments such as production, transportation and the like, the demodulation instrument (as shown in figure 2, a laser is also arranged in the distributed fiber vibration and strain demodulation instrument { the distributed fiber temperature measurement demodulation instrument is connected with a coupler, the coupler is connected with a demodulation module, the demodulation module is connected with a data analysis processing module } is internally provided with a laser 6, the laser is connected with the coupler, the coupler 7 is connected with the demodulation module 8, the demodulation module is connected with the data analysis processing module 9, an alarm module connected with cloud server information is also arranged in the distributed fiber vibration and strain demodulation instrument, and the alarm module sends real-time early warning signals to a monitoring room through an Ethernet or RS485 or wireless connection module, and the fiber is connected with the coupler).
4. The distributed optical fiber temperature measuring demodulator 4 adopts ROFDR technology, the single scanning time is within 1 second, 7200 physical units of optical fiber sensing channels can be scanned each time, 7200 temperature data are summarized, and a thermal pseudo-color map is drawn and corresponds to the physical positions of the mattress one by one.
5. The distributed vibration and strain sensor 5 combines a distributed optical fiber acoustic wave vibration sensing technology DAS and a distributed Brillouin strain sensing demodulation technology, performs time-sharing measurement through an optical switching module, and detects strain and vibration of a physical unit of an optical fiber sensor channel in real time.
6. And the mobile phone APP terminal software, the distributed optical fiber temperature data and the data of the distributed optical fiber vibration and strain sensor send the data to the cloud server through a WIFI module of the equipment, and the mobile phone APP displays the data of the intelligent mattress in real time and can provide a related sleeping state report according to the sleeping habit of the user.
The innovative optical fiber ring-shaped processing technology is adopted, so that the touch habit of sleeping of a human body is met, the density of the sensor is increased, and the accuracy of data is improved.
The temperature sensor provides effective analysis data for human habit through real-time monitoring of updating once in 1 second on average in 24 hours, and has larger data value. If the temperature monitoring is intensive, the human body temperature distribution, night turn-over habit and early warning of fever of adults and children can be known in real time, and a large amount of useful medical data is provided for individuals through the accumulation analysis of the human body temperature data in the long-term month and the long-term month, so as to assist medical examination.
The vibration and strain data can provide micro-fibrillation and respiratory reaction data in the sleeping process of the human body, the distributed strain data can provide skeleton change and lumbar vertebra state data of the human body for the individual, and the wrong sleeping posture is corrected through medical analysis. The strain data of sleeping of the person is drawn into a net structure, and the stress is different at different positions, for example, the bed body is softer, and the human body is in a bending state, so that the stress can be larger. If the bed body is harder, the human body is not sunken, the stress is smaller and the bed body is more uniform. The human head and the feet are lighter, the stress is smaller, the human buttocks and the human trunk are heavier, and the stress is larger. If the old people sleep on the soft bed, the stress is larger, and the classification shows that the bed is not suitable for the old people in the stress state, the hardness of the bed needs to be adjusted, but the hardness is adjusted to a certain degree, so that the comfort level can be ensured, and the spine can be ensured to have a good rest, namely, the bed needs big data support. In the future, domestic big data are increasing. In the future, obvious statistical analysis shows that the relationship between the weight, the body type and the lumbar condition of the mattress and the human is of medical statistical significance.
Through long-term big data analysis, whether the bed meets the current requirements of lumbar bones of human body can be known, and effective data support is provided for further customized softness, material characteristics and the like of the bed.
Through intensive sensing array, at ordinary times, but real-time supervision mattress place indoor environment's temperature change, say open warm in winter, open the air conditioner in summer, the influence that the temperature non-uniformity that corresponds the bed produced through big data analysis air conditioner air outlet to the human body. The floor heating in winter is moderate in temperature and normal in temperature uniformity. The data are docked into the intelligent home system platform in the adjustment mode, and the system platform takes the temperature of the environment where people are, rather than the temperature of an air conditioning port, as the adjustment basis. All things are based on people. For example, the floor heating is also carried out, and the latest environmental temperature of a person is taken as the adjusting basis.
The distributed acoustic vibration sensing system DAS has earthquake monitoring function, can provide a certain earthquake early warning, especially in areas with frequent earthquakes, the earthquakes often occur in night sleeping states, and when vibration which is not perceived by a human body is generated, a large-scale vibration sensor array under a mattress can finish early warning in advance, and an alarm device is started. The turning-over action of the human body is caused by high-frequency vibration above 10HZ, the frequency of earthquake is subsonic vibration below 10HZ and even below 1HZ, and the animal has perception capability. Fiber optic vibration sensors are currently in use for seismic related applications. The ultra-low frequency measuring device has the capability of measuring ultra-low frequency.
Embodiment two:
the difference from the first embodiment is that, as shown in fig. 3, the demodulator includes a distributed optical fiber temperature measuring demodulator, a distributed optical fiber vibration demodulator and a distributed optical fiber strain demodulator; three optical fibers are arranged in the sensing optical cable, the three optical fibers at any end of the sensing optical cable with three cores of one cable are respectively connected with an optical fiber connector, and the three optical fiber connectors at any end are respectively connected with the distributed optical fiber temperature measuring demodulation instrument, the distributed optical fiber vibration demodulation instrument and the distributed optical fiber strain demodulation instrument. The diameter of the ring positioned at the center of the mattress is 5cm, and the diameter of the ring near the edge of the mattress is 7-9 cm. The ring near the edge of the mattress is inclined in the direction gradually downwards from the edge of the mattress to the center.
Although the above design and use of the sensing optical fiber implantation method, on the premise of multiple sensing optical fibers, we can select only measuring temperature, or only measuring shape talk, or only measuring vibration, and any combination of the three technologies. Under the condition of meeting the requirements of various application scenes, the cost can be saved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (10)
1. The intelligent mattress based on the intensive distributed optical fiber sensing technology is characterized by comprising a sensing optical cable arranged in the mattress, wherein the sensing optical cable is positioned below the surface layer of the mattress, optical fiber connectors are respectively arranged at two ends of the sensing optical cable and are matched with optical fiber interfaces of demodulation equipment, a demodulator is connected with a cloud server through a built-in wifi module of the demodulator, and the cloud server is connected with APP software information for data display and analysis at a mobile phone end;
the sensing optical cable is sequentially bent along the length direction to form a plurality of rings, and a space is arranged between every two adjacent rings.
2. The intelligent mattress based on the dense distributed optical fiber sensing technology of claim 1, wherein the demodulator comprises a distributed optical fiber temperature-measuring demodulator, a distributed optical fiber vibration and strain demodulator; two optical fibers are arranged in the sensing optical cable, two optical fibers at any end of the sensing optical cable with two cores are respectively connected with an optical fiber connector, and the two optical fiber connectors at any end are respectively connected with the distributed optical fiber temperature measuring demodulation instrument and the distributed optical fiber vibration and strain demodulation instrument.
3. The intelligent mattress based on the dense distributed optical fiber sensing technology of claim 1, wherein the demodulator comprises a distributed optical fiber temperature-measuring demodulator, a distributed optical fiber vibration demodulator and a distributed optical fiber strain demodulator; three optical fibers are arranged in the sensing optical cable, the three optical fibers at any end of the sensing optical cable with three cores of one cable are respectively connected with an optical fiber connector, and the three optical fiber connectors at any end are respectively connected with the distributed optical fiber temperature measuring demodulation instrument, the distributed optical fiber vibration demodulation instrument and the distributed optical fiber strain demodulation instrument.
4. A smart mattress based on dense distributed optical fiber sensing technology as claimed in claim 2 or 3, wherein the rings are the same diameter and are each 5cm; the optical fiber connector is arranged in the mattress; the distributed optical fiber temperature measuring demodulator is a high-spatial resolution distributed optical fiber sensing demodulator.
5. The intelligent mattress based on the dense distributed fiber sensing technology of claim 4, wherein the cloud server is in information connection with an intelligent home system platform.
6. The intelligent mattress based on the intensive distributed optical fiber sensing technology, as set forth in claim 5, is characterized in that a laser is arranged in the distributed optical fiber vibration and strain demodulation instrument, the laser is connected with a coupler, the coupler is connected with a demodulation module, and the demodulation module is connected with a data analysis processing module; an alarm module connected with cloud server information is further arranged in the distributed optical fiber vibration and strain demodulator, and the alarm module sends real-time early warning signals to a monitoring room through an Ethernet or RS485 or wireless connection module; the optical fiber is connected with the coupler.
7. A smart mattress based on dense distributed optical fiber sensing technology as claimed in claim 2 or 3, wherein the diameter of the loop at the center of the mattress is 5cm and the diameter of the loop near the edge of the mattress is 7-9 cm.
8. The intelligent mattress based on the dense distributed optical fiber sensing technology of claim 7, wherein the ring near the edge of the mattress is arranged obliquely and the oblique direction is gradually downward from the edge of the mattress to the central direction.
9. The method for monitoring the intelligent mattress based on the intensive distributed optical fiber sensing technology as claimed in claim 6, comprising the following steps:
the sensing optical cable detects temperature, vibration and strain data of a human body during sleeping, a digital signal is formed after analysis by the demodulation module and is sent to the data analysis processing module, the data analysis processing module sends the data to the cloud server through the wifi module, and the cloud server stores and processes information and then sends the data to APP software of a mobile phone terminal; the cloud server also sends the data to the intelligent home system platform.
10. The method for monitoring the intelligent mattress based on the intensive distributed optical fiber sensing technology according to claim 9, wherein the intelligent home system platform compares the temperature data of the environment where the transmitted person is located with the data stored in the database in the intelligent home system platform and then sends out an instruction for adjusting the air conditioner or the floor heating, and the air conditioner or the floor heating adjusts the temperature correspondingly;
a database is arranged in the distributed optical fiber vibration and strain demodulation instrument or the distributed optical fiber vibration demodulation instrument, and the database stores vibration data of the turning-over action of a person vibrating at high frequency and vibration data of earthquake vibrating at infrasound; the data analysis processing module is used for comparing the vibration signals acquired by the optical fibers with data stored in the database and sending signals to the alarm module.
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