CN103142219B - Unrestraint type vital sign monitoring mattress - Google Patents
Unrestraint type vital sign monitoring mattress Download PDFInfo
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- CN103142219B CN103142219B CN201310106596.9A CN201310106596A CN103142219B CN 103142219 B CN103142219 B CN 103142219B CN 201310106596 A CN201310106596 A CN 201310106596A CN 103142219 B CN103142219 B CN 103142219B
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Abstract
The invention relates to an unrestraint type vital sign monitoring mattress. The unrestraint type vital sign monitoring mattress comprises a mattress body, wherein the mattress body is internally provided with a sign monitoring sensor for monitoring vital sign information; the sign monitoring sensor is electrically connected with an information analyzing and extracting circuit; and the information analyzing and extracting circuit identifies and stores corresponding heart rates, respiratory rates, body motion recognition and on-bed and/or off-bed states according to a monitoring signal of the sign monitoring sensor. According to the unrestraint type vital sign monitoring mattress disclosed by the invention, a human body to be monitored directly lies on the mattress body and the sign information of the human body to be monitored is detected by the sign monitoring sensor in the mattress body, so as to realize the monitoring of unrestraint type vital signs. The information of the sign monitoring sensor is analyzed through the information analyzing and extracting circuit so that the heart rates, the respiratory rates, the body motion state and the on-bed and/or off-bed states of the human body to be monitored are obtained; storage and transmission of monitoring state parameters can be realized; and the unrestraint type vital sign monitoring mattress is compact in structure, low in use cost, convenient to use, safe and reliable.
Description
Technical field
The present invention relates to a kind of monitoring mattress, especially a kind of without constraint formula vital sign monitoring mattress, belong to the technical field of signal monitoring.
Background technology
Internet of Things cognition technology is one of gateway of internet of things key technology, and along with the large-scale application of following Internet of Things, sensor will become main data acquisition equipment carrying person, and therefore, the maturation of sensor device will directly affect the development of Internet of Things industry.Sensor is generally made up of sensing element, conversion element, change-over circuit three parts: sensing element---effect is that direct feeling is measured, and the element of output and the measured a certain physical quantity that becomes to determine relation; Conversion element---effect is to be output as input with sensing element, and this input is converted to circuit parameter; Change-over circuit---effect is that the foregoing circuit Parameters Transformation of access is become to electric weight output.If measured enough large, the output of sensor has higher signal to noise ratio, can perception measured by output; If measured very faint, the signal to noise ratio of the output of sensor is very little, is difficult to perception measured by output, and at this moment sensor does not have the effect of sensing.If the monitoring of small-signal and recognition technology are applied to the output signal of detection and Identification sensor, although measured very faint, it is measured that sensor also can perception.
The most occupation modes that adopt contiguity constraint of existing vital sign detecting instrument, monitoring use cost is high, has hindered the promotion and application to vital sign equipment.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of and monitor mattress without constraint formula vital sign, its compact conformation, can effectively monitor and read vital sign parameter, and use cost is low, easy to use, safe and reliable.
According to technical scheme provided by the invention, described without constraint vital sign monitoring mattress, comprise mattress body; In described mattress body, be provided with the sign monitoring sensor for monitoring vital sign information, described sign monitoring sensor and information analysis extract circuit and be electrically connecteds, and information analysis extracts circuit and identify and store corresponding heart rate, breathing rate, body according to the monitor signal of sign monitoring sensor and move and identify and at bed and/or from bed state.
Described sign monitoring sensor comprises and is distributed in the intrinsic piezoelectric cable of mattress.
Described information analysis extracts circuit and comprises microcontroller, described microcontroller is connected with the outfan of sign monitoring sensor by operation amplifier and analog to digital conversion circuit, microcontroller is identified the moving identification of corresponding heart rate, breathing rate, body and at bed and/or from bed state, and by the heart rate of described identification, breathing rate, the moving identification of body and store in SD card at bed and/or from bed state.
Described microcontroller is connected with ethernet controller, and microcontroller is moved the heart rate of identification and/or storage, breathing rate, body identification and arrives Ethernet at bed and/or from bed state transfer by ethernet controller.
Described microcontroller is connected with buzzer, and the heart rate of microcontroller identification, breathing rate, body move identification and do not mate with canned data at bed and/or from bed state, and while exceeding warning value, microcontroller is reported to the police by buzzer.
Described microcontroller comprises Port Multiplier, the outfan of described Port Multiplier and regulator, the moving identification module of body and at bed/be connected from bed state recognition module, regulator is connected with heart rate identification module by amplification filtering module, and described heart rate identification module is connected with breathing rate identification module.
Advantage of the present invention: human body to be monitored directly lies on mattress body, the intrinsic sign monitoring sensor of mattress detects the sign information of human body to be monitored, realizes the monitoring without constraint vital sign.Extracting circuit by information analysis analyzes the information of sign monitoring sensor, thereby the moving state of the heart rate, breathing rate, body that obtain human body to be monitored, at bed/from bed state, and can realize storage and the transmission of monitoring state parameter, compact conformation, use cost is low, easy to use, safe and reliable.
Brief description of the drawings
Fig. 1 is the structured flowchart that information analysis of the present invention extracts circuit.
Fig. 2 is structured flowchart of the present invention.
Fig. 3 is the structured flowchart of microcontroller of the present invention.
Fig. 4 is the structured flowchart of heart rate identification of the present invention.
Description of reference numerals: 1-operation amplifier and analog to digital conversion circuit, 2-microcontroller, 3-buzzer, 4-ethernet controller, 5-SD card, 6-sign monitoring sensor, 7-information analysis extracts circuit, 8-vital sign historical data statistical analysis module, 9-Port Multiplier, 10-regulator, 11-amplification filtering module, 12-heart rate identification module, 13-breathing rate identification module, 14-body moves identification module, 15-is at bed/from bed state recognition module, 16-comparison module, 17-locking module and 18-decision-making module.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in Figure 2: in order conveniently to realize the monitoring to human body vital sign, the present invention includes mattress body; , be provided with the sign monitoring sensor 6 for monitoring vital sign information in described mattress body, described sign monitoring sensor 6 and information analysis extract circuit 7 and are electrically connected, and information analysis extracts circuit 7 and identify and store that corresponding heart rate, breathing rate, body are moving identifies and at bed and/or from bed state according to the monitor signal of sign monitoring sensor 6.
Particularly, in the embodiment of the present invention, sign monitoring sensor 6 adopts piezoelectric cable, and described piezoelectric cable is distributed in mattress body, and described mattress body can adopt conventional mattress fabric, and piezoelectric cable and mattress body form piezoelectricity mattress jointly.Piezoelectric cable is a kind of piezoelectric film sensor, adopts coaxial design, adopts between layers insulant, in the time that piezoelectric cable is compressed or stretch, piezoelectric effect can occur, thereby produces the electric charge or the voltage signal that are proportional to pressure.Piezoelectric cable, owing to adopting coaxial design, can reach the effect of self-shileding, can be applied under the environment of high electromagnetic interference; The coaxial combination technology of employing standard, it can be made into passive coaxial cable; Because the intensity of itself is good, can be applied in heavily card and count with the axle of truck; As linear sensor, it can be applied in large-area monitoring.Information analysis extracts circuit 7 can carry out analyzing and processing to the monitor signal of sign monitoring sensor 6, and after storage, form vital sign historical data statistical analysis module 8, can the historical data of monitoring be inquired about and be reviewed by vital sign historical data statistical analysis module 8.In the embodiment of the present invention, the moving identification of described body refers to action and the frequency of personnel to be monitored stirring on mattress body etc.
As shown in Figure 1: be the structured flowchart of information analysis extraction circuit 7 of the present invention.Described information analysis extracts circuit 7 and comprises microcontroller 2, described microcontroller 2 is connected with the outfan of sign monitoring sensor 6 by operation amplifier and analog to digital conversion circuit 1, microcontroller 2 is identified the moving identification of corresponding heart rate, breathing rate, body and at bed and/or from bed state, and by the heart rate of described identification, breathing rate, the moving identification of body and store in SD card 5 at bed and/or from bed state.Described operation amplifier and analog to digital conversion circuit 1 comprise operational amplifier and analog-to-digital conversion module, and the small-signal amplification filtering that described operation amplifier and analog to digital conversion circuit 1 can be exported sign monitoring sensor 6 is to the state that can drive microcontroller 2.
Described microcontroller 2 is connected with ethernet controller 4, and microcontroller 2 passes through ethernet controller 4 by the heart rate of identification and/or storage, breathing rate, the moving identification of body and arrives Ethernet at bed and/or from bed state transfer.Be that microcontroller 2 is transferred to remote control terminal by ethernet controller 4 by relevant status data, realize long-range monitoring.
Described microcontroller 2 is connected with buzzer 3, when heart rate, breathing rate, the body that microcontroller 2 is identified moves identification and do not mate with canned data at bed and/or from bed state, exceed while setting restriction (while exceeding the warning value of microcontroller 2 interior settings), microcontroller 2 is reported to the police by buzzer 3.In the embodiment of the present invention, can be in the parameter of heart rate, the breathing rate etc. of the interior pre-stored relevant human body to be monitored of microcontroller 2, when the signal of monitoring when sign monitoring sensor 6 does not mate with the interior pre-stored parameter of microcontroller 2, occur that pilot signal and stored parameter have relatively large deviation, now, microcontroller 2 can be reported to the police by buzzer 3, to remind relevant monitoring personnel.Meanwhile, the signal that microcontroller 2 can detect the sign monitoring sensor 6 of identification shows output by display screen or display instrument.
Described microcontroller 2 comprises Port Multiplier 9, the outfan of described Port Multiplier 9 and regulator 10, the moving identification module 14 of body and at bed/be connected from bed state recognition module 15, regulator 10 is connected with heart rate identification module 12 by amplification filtering module 11, and described heart rate identification module 12 is connected with breathing rate identification module 13.
Particularly, Port Multiplier 9 is assigned to respectively the moving identification module 14 in regulator 10, body by the monitor signal after amplification filtering and at bed/in bed state recognition module 15.
For piezoelectric, the frequency of breathing is crossed slow and is difficult to be detected, and for the breathing rate of breathing rate identification module 13 monitoring outputs, when the invention process, according to the relation of heart rate and breathing rate, is obtaining can calculating breathing rate after heart rate.
In the moving identification module 14 of body, owing to have pressure on mattress body time, the moving piezoelectric signal of body reaches tens of millivolts, and the moving threshold value of body can be set, and can be judged to be a body moving in the time that piezoelectric signal exceedes this threshold value in a certain period.
At bed/in bed state recognition module 15, from being transformed at bed state from bed state, piezoelectric signal can, from without heart rate small-signal, be converted to the positive pulse that produces several tens of millivolts of amplitudes, then changes and have by heart rate small-signal; And from being transformed at bed state from bed state, piezoelectric signal can be from there being heart rate small-signal, be converted to the negative pulse that produces several tens of millivolts of amplitudes, then transformation has or not heart rate small-signal.Can be according to the having or not of heart rate signal in small-signal, and the change procedure such as positive and negative of pulse signal, judge detected this at bed or from bed state.
As shown in Figure 4: the structured flowchart of heart rate identification module 12.Described heart rate identification module 12 comprises comparison module 16, locking module 17 and decision-making module 18, when the invention process, mainly uses sweep-frequency Békésy audiometer lock-in amplifier to complete, and is implemented as follows:
Comparison module 16, adopts traditional threshold value comparison method to detect pulse signal.Specific practice is, gets the approximately half of average of several peak value of pulses of nearest a period of time as threshold value.Signal after amplification filtering is carried out to threshold value discriminating, exceed threshold value person and be judged to be heart beating pulse.This method is simple and quick, but it is larger affected by environmental disturbances, and identification error is higher.
Locking module 17, utilizes the lock-in amplifier identification heart rate with frequency sweep function.Lock-in amplifier is to utilize relevant principle, extracts the effective ways of small-signal from noise.But frequency or its approximate frequency that prerequisite is noise are known, so just can produce same frequency reference signal, reach signal coherence and extract the object of small-signal.The output of traditional lock-in amplifier is the DC voltage that is directly proportional to signal intensity.For the vital sign monitoring mattress in this project, people's pulse frequency varies with each individual, and therefore its piezoelectric signal frequency also fluctuates, and traditional like this lock-in amplifier technology just can not obtain expected result.Therefore the present invention takes the way of frequency sweep: the frequency that makes reference signal in a specified scope by ascending repeatedly change (that is the frequency sweep) of certain step-length, in the time that lock-in amplifier has the direct current signal of stable output, can obtain heart rate by the frequency of reference signal.When specific implementation frequency sweep lock-in amplifier, can utilize rapid fourier change to accomplish easily, first the time-domain signal of piezoelectric cable is obtained to frequency-region signal as rapid fourier change, then find out the frequency of energy maximum in frequency-region signal, frequency can calculate heart rate thus.
In decision-making module 18, determine final rhythm signal according to the heart rate data signal of comparison module 16 and locking module 17 two-way.Two-way heart rate data is derived from two kinds of different heart rate acquisition methods, often respectively has quality in different environments for use.Decision-making module 18 will therefrom be got excellent roguing exactly, output heart rate data the most accurately.Concrete method can have multiple, and as simple averaging method, weighted sum method, approaches averaging method etc. most.Also can utilize artificial neural network, support vector regression, find the relation between two-way heart rate data and true heart rate data by the method for machine learning, utilize this relation to obtain final heart rate data according to two-way heart rate data.
As shown in Fig. 1 ~ Fig. 4: human body to be monitored directly lies on mattress body, the intrinsic sign monitoring sensor 6 of mattress detects the sign information of human body to be monitored, realizes the monitoring without constraint vital sign.Extracting circuit 7 by information analysis analyzes the information of sign monitoring sensor 6, thereby the moving state of the heart rate, breathing rate, body that obtain human body to be monitored, at bed/from bed state, and can realize storage and the transmission of monitoring state parameter, compact conformation, use cost is low, easy to use, safe and reliable.
Above are only one embodiment of the present of invention, its concrete enforcement is described as embodiment of the method, do not repeat them here, but not in order to limit the present invention.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of making within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. without a constraint vital sign monitoring mattress, comprise mattress body; It is characterized in that: in described mattress body, be provided with the sign monitoring sensor (6) for monitoring vital sign information, described sign monitoring sensor (6) and information analysis extract circuit (7) and be electrically connecteds, and information analysis extracts circuit (7) and identify and store corresponding heart rate, breathing rate, body according to the output signal of sign monitoring sensor (6) and move and identify and at bed and/or from bed state;
Described sign monitoring sensor (6) adopts piezoelectric cable, the output of the output of piezoelectric cable that is described sign monitoring sensor, and described piezoelectric cable is distributed in mattress body, and described piezoelectric cable and mattress body form piezoelectricity mattress jointly;
Described information analysis extracts circuit (7) and comprises microcontroller (2), described microcontroller (2) is connected with the outfan of sign monitoring sensor (6) by operation amplifier and analog to digital conversion circuit (1), microcontroller (2) is identified the moving identification of corresponding heart rate, breathing rate, body and at bed and/or from bed state, and by the heart rate of described identification, breathing rate, the moving identification of body and store in SD card (5) at bed and/or from bed state;
Described microcontroller (2) is connected with ethernet controller (4), and microcontroller (2) passes through ethernet controller (4) by the heart rate of identification and/or storage, breathing rate, the moving identification of body and arrives Ethernet at bed and/or from bed state transfer;
Described microcontroller (2) is connected with buzzer (3), and the heart rate of microcontroller (2) identification, breathing rate, body move identification and do not mate with canned data at bed and/or from bed state, and microcontroller (2) is reported to the police by buzzer (3);
Described microcontroller (2) comprises Port Multiplier (9), the outfan of described Port Multiplier (9) and regulator (10), the moving identification module (14) of body and at bed/be connected from bed state recognition module (15), regulator (10) is connected with heart rate identification module (12) by amplification filtering module (11), and described heart rate identification module (12) is connected with breathing rate identification module (13);
Described heart rate identification module (12) comprises comparison module (16), locking module (17) and decision-making module (18); Described comparison module (16), adopts traditional threshold value comparison method to detect pulse signal; Locking module (17), utilizes the lock-in amplifier identification heart rate with frequency sweep function; Decision-making module (18) is determined final heart rate signal according to the heart rate data signal of comparison module (16) and locking module (17) two-way;
Described Port Multiplier (9) is assigned to respectively the moving identification module (14) in regulator (10), body by the monitor signal after amplification filtering and at bed/in bed state recognition module (15);
Human body to be monitored directly lies on mattress body, the intrinsic sign monitoring sensor of mattress (6) output packet is containing the small-signal of the sign information of human body to be monitored, extracting circuit (7) by information analysis analyzes the information of sign monitoring sensor (6), thereby the moving state of the heart rate, breathing rate, body that obtain human body to be monitored, at bed/from bed state, realize the monitoring without constraint vital sign; And can realize storage and the transmission of monitoring state parameter.
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| CN201310106596.9A CN103142219B (en) | 2013-03-28 | 2013-03-28 | Unrestraint type vital sign monitoring mattress |
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| CN201310106596.9A CN103142219B (en) | 2013-03-28 | 2013-03-28 | Unrestraint type vital sign monitoring mattress |
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| CN103142219A CN103142219A (en) | 2013-06-12 |
| CN103142219B true CN103142219B (en) | 2014-09-10 |
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| CN104274181B (en) * | 2013-07-10 | 2018-12-18 | 上海宽带技术及应用工程研究中心 | Furniture type sign detection method, system and monitoring system |
| CN104510451A (en) * | 2013-09-29 | 2015-04-15 | 海思康利(北京)新技术有限公司 | Non-load monitoring system |
| WO2015171667A1 (en) * | 2014-05-05 | 2015-11-12 | Scanadu Incorporated | Portable device with multiple integrated sensors for vital signs scanning |
| CN104931073A (en) * | 2015-06-30 | 2015-09-23 | 奇瑞汽车股份有限公司 | Sensor based on signal adjusting circuit |
| CN105117007B (en) * | 2015-08-20 | 2019-02-12 | 小米科技有限责任公司 | Show control method, device and the intelligent pad of equipment |
| CN106236041B (en) * | 2016-08-23 | 2019-06-25 | 电子科技大学 | A kind of algorithm and system measuring heart rate and respiratory rate in real time and accurately |
| CN108498083A (en) * | 2017-02-24 | 2018-09-07 | 深圳市迈迪加科技发展有限公司 | A kind of physiologic information monitoring device and method |
| CN109394223A (en) * | 2017-08-17 | 2019-03-01 | 香港理工大学 | Monitor the method, apparatus and server of physical activity |
| CN111770705B (en) * | 2017-12-28 | 2023-06-02 | 数眠公司 | Bed with presence detection feature |
| CN107981846A (en) * | 2018-01-02 | 2018-05-04 | 湖北心源科技有限公司 | Contactless multi-parameter sleep acquisition analysis system |
| CN108433435A (en) * | 2018-03-28 | 2018-08-24 | 江苏兰菱机电科技有限公司 | A kind of lathe pad |
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| CN111210602A (en) * | 2019-12-27 | 2020-05-29 | 广州昆仑科技有限公司 | Night risk prevention and control method, system and storage medium |
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