CN110652303A - Medical intelligent mattress based on piezoelectric ceramic sensor - Google Patents
Medical intelligent mattress based on piezoelectric ceramic sensor Download PDFInfo
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- CN110652303A CN110652303A CN201911093049.5A CN201911093049A CN110652303A CN 110652303 A CN110652303 A CN 110652303A CN 201911093049 A CN201911093049 A CN 201911093049A CN 110652303 A CN110652303 A CN 110652303A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1102—Ballistocardiography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/113—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb occurring during breathing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4806—Sleep evaluation
- A61B5/4818—Sleep apnoea
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
- A61B5/6891—Furniture
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/30—General characteristics of devices characterised by sensor means
- A61G2203/34—General characteristics of devices characterised by sensor means for pressure
Abstract
The invention provides a medical intelligent mattress sleep monitoring device and method based on a piezoelectric ceramic sensor. The device comprises a piezoelectric ceramic sensor unit, a signal amplification and filtering unit, a microprocessor unit, a communication unit, a USB power supply unit and the like. The method is characterized in that: the piezoelectric ceramic sensor unit is used for placing a piezoelectric sensor. The unit consists of a plurality of sensors, and the sensor unit is connected with a signal amplifying and filtering unit through a lead. The signal amplification and filtering unit completes the amplification and filtering of the original vital sign signals, and the signals are sent to the microprocessor unit after being amplified and filtered. And the microprocessor unit completes data analysis and processing on the amplified and filtered signals, and finally obtains vital sign signals of bed respiration, heart rate, body movement and the like. The invention realizes the monitoring of physiological states such as bed heart rate, respiration, body movement and the like by sensing the slight pressure change of the human body. The method has the characteristics of high accuracy, low cost and the like, is suitable for common consumers, and has certain market prospect and popularization value.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to an Internet of things medical intelligent mattress sensing electrocardio impact signals based on a piezoelectric ceramic sensor.
Background
In the field of old people, China is in the trend of rapid development of aged people at present, and the attention on physical and mental health of the aged, particularly the solitary aged, is particularly important. With the age, the sleep quality of the old people is reduced, various chronic diseases can be induced, and one third of the time of the old people is spent in sleeping, so that the physiological state of the human body is sensed in a continuous and non-contact manner in the natural state, and the method has important significance for finding and predicting related cardiovascular and cerebrovascular diseases, respiratory diseases and other diseases in advance.
In intelligent hardware and intelligent house field, generally adopt intelligent bracelet to monitor child rhythm of the heart breathing and sleep quality on the market at present. On the one hand, need children to hand-carry intelligent bracelet, the smart mobile phone in the market is almost all photoelectric sensing in addition, and the influence of bracelet environment humiture is very big, and it is also great also to have the error. As parents, the intelligent bracelet is more concerned about when children go to bed to sleep and how the sleep quality is, so that the intelligent bracelet cannot be realized. The intelligent mattress without contact is significant in detecting the vital signs and the sleep quality of children.
In the medical field, the perception of vital signs such as heart rate respiration can only rely on traditional mode, needs a plurality of electrodes of patient adhesion, tests vital signs such as heart rate respiration through expensive medical instrument. On the one hand, the operation of the medical staff is very complicated, the patient is not easy to move, and the expensive detection cost is required. The vital sign real-time monitoring health equipment has important meaning and popularization value, can monitor vital signs such as heart rate, breathing and body movement of a patient in real time, and can monitor the sleep quality of the patient.
Disclosure of Invention
The invention aims to avoid the defects in the prior art and provides an Internet of things medical-grade intelligent mattress based on a piezoelectric ceramic sensor.
The invention is realized by the following technical scheme:
the utility model provides a medical intelligent mattress based on piezoceramics sensor which characterized by: the intelligent mattress comprises a vital sign piezoelectric ceramic sensor unit (1), a sensor signal amplification and filtering unit (2), a microprocessor signal processing unit (3), a communication unit (4) and a USB power supply unit (5). The method is characterized in that: the piezoelectric ceramic sensor unit is used for placing a piezoelectric sensor, consists of a plurality of sensor boards and is used for collecting vital sign signals. The sensor signal amplifying and filtering unit is used for finishing amplification and filtering of original vital sign signals. And the microprocessor signal processing unit is used for analyzing and processing the amplified and filtered signals to finally obtain vital sign signals such as bed respiration, heart rate, body movement and the like. The communication unit is transmitted to the server or the mobile terminal through wired Ethernet or wireless wifi or Bluetooth or 2G or 4G. And the USB power supply unit supplies power to each unit through a USB adapter.
The communication unit has a plurality of communication modes to choose. The Bluetooth communication is used for the direct communication between the mobile terminal and the intelligent mattress; the Ethernet and the wifi are connected with the cloud server through the local area network; the 2G and the 4G are connected with the cloud server based on the mobile communication base station.
The invention has the beneficial effects that:
the invention uses a high-sensitivity low-cost piezoelectric ceramic sensor array to collect micro vibration signals caused by heartbeat and respiration when a human body is at rest, analyzes and extracts the signals by utilizing modern digital signal processing and pattern recognition technology, forms two vital sign oscillograms of a ballistocardiogram and respiratory waves, and generates various vital sign parameters based on the oscillograms. The special vibration waveform generated by the heart pump blood is recorded by the ballistocardiogram, contains rich cardiovascular and circulatory system information, can be used for early discovery, diagnosis, postoperative evaluation and follow-up of cardiovascular diseases, and has great clinical value; by extracting the respiratory wave, the method can be applied to screening of respiratory system diseases.
The invention realizes the main functions:
1) real-time vital sign monitoring, comprising: and monitoring heartbeat and respiration in real time.
2) Real-time body motion state monitoring, including: and (5) monitoring the dynamic and static lying states of the body in real time.
3) Abnormal vital sign warning, namely warning is sent in time when abnormal vital signs appear by setting the range of the vital sign parameters, so that the patient can be conveniently rescued or sent to the doctor in time.
4) Bed leaving alarm monitoring: when the patient leaves the bed at night or the bed leaves overtime, an alarm can be sent, and the follow-up help or follow-up is facilitated.
5) Screening of sleep apnea syndrome: the incidence of sleep apnea syndrome increases with age, especially in obese people, and is not easily valued. In fact, the long-term insomnia apnea syndrome can cause serious hypoxemia and sleep disorder, is closely related to the occurrence of diseases such as hypertension, arrhythmia, cardiovascular and cerebrovascular diseases, respiratory failure and the like, and a few patients can die suddenly at night. The mattress can realize screening of sleep apnea syndrome by monitoring night respiratory waves of the old people, so that early intervention is realized, occurrence of related diseases is reduced, and progress of the related diseases is slowed down.
6) Assessment of cardiopulmonary health: by long-term analysis of the ballistocardiogram and respiratory wave data, the cardio-pulmonary function of the old can be effectively evaluated, and intervention or treatment is reminded.
Drawings
FIG. 1 is a schematic diagram of the structure of each functional unit of the present invention
Wherein: 1-sensor unit, 2-signal amplification and filtering unit, 3-microprocessing unit, 6-communication adapter unit, wherein the communication adapter unit 6 comprises a communication unit 4 and a USB power supply unit 5
FIG. 2 is a schematic diagram of the structure of the intelligent mattress
Wherein: 11-mattress upper cloth layer, 12-mattress upper sponge layer, 13-piezoelectric ceramic sensor layer, 14-insulating plastic board layer, 15-mattress lower sponge layer, 16-mattress lower cloth layer
FIG. 3 is a schematic diagram of a system for implementing the present invention
System architecture main intelligent mattress main body 207, communication adapter 206 and cloud server 208
Wherein each mattress body 207 comprises 5 head sensor modules and 5 chest sensor modules, wherein the head sensor modules are T1, T2, T3, T4, T5, respectively, and the chest sensor modules are X1, X2, X3, X4, X5, respectively, and a motherboard microprocessor module 203. Wherein each sensor module comprises a piezoceramic sensor 201 and an amplification filter module 202. Wherein each communication adapter 206 includes a communication module 204 and a USB power module 205. The communication adapter is placed outside the mattress, and the antenna effect for communication is guaranteed to be optimal.
Fig. 4 is a schematic diagram of a J-wave peak corresponding to an electrocardio-shock response diagram.
Detailed Description
The invention is further described with reference to the following examples.
A medical intelligent mattress based on piezoelectric ceramic sensors comprises an intelligent mattress main body 207, a communication module 206 and a cloud server 208. The intelligent mattress 207 comprises 10 sensor modules, wherein 5 head sensor modules are respectively T1, T2, T3, T4 and T5, and 5 chest sensor modules are respectively X1, X2, X3, X4 and X5. Each sensor module comprises a piezoceramic sensor 201 and an amplification filter module 202. Additionally, a motherboard microprocessor module 203 is included.
The sensor module is connected with the mainboard microprocessor module through a lead.
Each intelligent mattress body has a communication adapter 206 on the outside and a communication module 204 and a USB power supply module 205 inside. The communication adapter 206 is connected with the motherboard microprocessor module 203 through a USB serial port.
And A1, acquiring data of multiple parts of a human body in a sleep process by adopting piezoelectric ceramic sensor acquisition equipment to obtain multiple electrocardio impact corresponding graphs.
Step A2, performing low-pass filtering on the corresponding real-time electrocardio impact signals to remove high-frequency noise, wherein the filtering is performed by adopting a low-pass filter circuit with the cut-off frequency of 20 Hz-100 Hz;
step A3, performing high-pass filtering on the low-pass filtered real-time electrocardiosignals, removing low-frequency noise, and extracting to obtain effective electrocardiosignals, wherein the cut-off frequency of the high-pass filtering is 0.5 Hz-1 Hz;
and A4, processing the real-time electrocardiosignals after low-pass and high-pass filtering to restore an electrocardio impact response diagram.
And A5, after obtaining the electrocardio-impact response images, analyzing and extracting the characteristic value of each electrocardio-impact response image to obtain the characteristic value contained in the electrocardio-impact response images.
A6, acquiring J wave peak values in the electrocardio-shock response image according to a preset characteristic value algorithm, and acquiring all effective J wave peak values and the occurrence time point of each J wave peak;
step A7, calculating heart rate characteristic parameters according to the obtained J-wave peak values, wherein the time point of occurrence of each J-wave peak corresponds to the heart beat once;
as shown in fig. 4, each of the electro-cardio-impulse response maps contains several J-wave peaks, wherein each of the J-wave peaks corresponds to a heart beat, that is, one J-wave peak corresponds to one heart beat. Therefore, the frequency of the heart beat, namely the heart rate, can be obtained according to the wave crest of the J wave.
In the above embodiment, the electrocardiosignal is obtained by adopting band-pass filtering of 0.5Hz to 20Hz, and the J wave peak capable of reflecting the heart beat is obtained by signal processing, so as to obtain the heart rate characteristic parameter. In the invention, the breathing signal can be extracted by carrying out band-pass filtering on the electrocardiosignal at 0.1 Hz-1 Hz, and the breathing frequency corresponding to the breathing signal can be easily obtained through analyzing and processing the characteristic value of the signal, thereby realizing the real-time monitoring of the breathing vital sign.
Claims (5)
1. A medical intelligent mattress based on a piezoelectric ceramic sensor comprises a vital sign piezoelectric ceramic sensor unit (1), a sensor signal amplification and filtering unit (2), a microprocessor signal processing unit (3), a communication unit (4) and a USB power supply unit (5); the method is characterized in that: the piezoelectric ceramic sensor unit is provided with a piezoelectric sensor, consists of a plurality of sensor boards and is used for collecting vital sign signals; the sensor signal amplifying and filtering unit is used for amplifying and filtering original vital sign signals; the microprocessor signal processing unit completes data analysis processing on the amplified and filtered signals, and finally obtains vital sign signals of bed respiration, heart rate, body movement and the like; the communication unit is transmitted to a server or a mobile terminal through wired Ethernet or wireless wifi or Bluetooth or 2G or 4G; and the USB power supply unit supplies power to each unit through a USB adapter.
2. The method for detecting the medical intelligent mattress based on the piezoelectric ceramic sensor according to claim 1, wherein the vital sign signals acquired by the piezoelectric ceramic unit acquisition device are converted into corresponding electrocardio-impact signals for detecting the sleep quality in bed, and the method comprises the following steps: step 1, data acquisition is carried out on a plurality of different parts of a human body in a sleeping process through a plurality of piezoelectric sensor unit (1) acquisition devices to obtain a plurality of vital sign signals containing electrocardio-impact diagrams; step 2, amplifying and filtering the multiple paths of vital sign signals through the sensor signal amplifying and filtering unit (2), and extracting the required corresponding impact signals of the human body in the bed electrocardio from the original signals; and 3, analyzing and processing the multi-channel human body in-bed electrocardio shock response signals through the microprocessor signal processing unit (3), selecting the electrocardio shock signals which can reflect the vital signs of the human body most, and restoring the vital signs of respiration, heart rate, body movement and the like required by people.
3. The intelligent medical mattress based on the piezoelectric ceramic sensor is characterized in that a mattress main body sequentially comprises an upper fabric layer, an upper sponge layer, a piezoelectric ceramic sensor layer, an insulating plastic plate layer, a lower sponge layer and a lower fabric layer from top to bottom; the piezoelectric sensor board layer comprises a piezoelectric ceramic sensor unit (1) and a sensor signal amplifying and filtering unit (2); is connected to a microprocessor signal processing unit (3) through a lead.
4. A medical intelligent mattress based on piezoelectric ceramic sensors, according to claim 1, characterized in that its communication adapter (6) is independent from the outside of the intelligent mattress body, the communication adapter (6) comprises a communication unit (4) and a USB power supply unit (5), and is connected to the mattress motherboard microprocessor signal processing unit (3) through USB.
5. The intelligent medical mattress based on piezoelectric ceramic sensors as claimed in claim 1, wherein the communication unit (4) is connected with the signal processing unit (3) of the main board microprocessor through a serial port.
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| CN201911093049.5A CN110652303A (en) | 2019-11-11 | 2019-11-11 | Medical intelligent mattress based on piezoelectric ceramic sensor |
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| CN201911093049.5A CN110652303A (en) | 2019-11-11 | 2019-11-11 | Medical intelligent mattress based on piezoelectric ceramic sensor |
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Cited By (4)
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| CN111345802A (en) * | 2020-03-16 | 2020-06-30 | 南京润楠医疗电子研究院有限公司 | Device and method for acquiring double heartbeat frequency based on cardiac shock signal |
| CN112155526A (en) * | 2020-09-29 | 2021-01-01 | 李树志 | Sleep monitoring device and control method thereof |
| CN113749467A (en) * | 2021-09-29 | 2021-12-07 | 慕思健康睡眠股份有限公司 | Sleep improvement method and intelligent mattress |
| CN114869255A (en) * | 2022-04-28 | 2022-08-09 | 杭州师范大学钱江学院 | Non-contact vital sign monitoring system |
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