CN104127185A - Method and system for monitoring behaviors of getting in and out of bed - Google Patents
Method and system for monitoring behaviors of getting in and out of bed Download PDFInfo
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- ORCSMBGZHYTXOV-UHFFFAOYSA-N bismuth;germanium;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Ge].[Ge].[Ge].[Bi].[Bi].[Bi].[Bi] ORCSMBGZHYTXOV-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a method and a system for monitoring behaviors of getting in and out of a bed. The method includes that a piezoelectric sensor for sensing pressure on the bed is arranged below a bed foot and comprises a first-stage pressure sensing unit and a second-stage pressure sensing unit; the first-stage pressure sensing unit acquires first electric signals relating to changes of actions of getting in and out of the bed through pressure changes; the second-stage pressure sensing unit acquires second electric signals relating to heartbeat of a user through pressure changes; when the first electric signals dramatically change and finally be stable, actions of getting in and out of the bed occur; after the first electric signals dramatically change and finally be stable, if heart impact signals are extracted form the second electric signals, someone is in the bed; if no heart impact signal is extracted from the second electric signals, no one is in the bed. Voltage values measured by the piezoelectric sensor are subjected to sample analyzing and calculating to judge whether the behavior of the user is getting in or out of the bed, so that effective monitoring of user's behaviors of getting in and out of the bed is realized.
Description
Technical field
The invention belongs to monitoring technique field, relate to a kind of bunk bed behavior monitoring method and system.
Background technology
Along with social development and scientific and technological progress, people more and more focus on the way to keep in good health, and the modes such as various health cares, prevent disease emerge in an endless stream.Various articles for use in daily life have also been set up contacting more or less with health preserving at leisure.Take floor as example, in order to prevent that old man from falling down unmanned discovery, increasing intelligent place should need and give birth to.These intelligent floors are substantially all that by means of the characteristic research of all kinds of piezoelectric transducers out its application provides great convenience and intelligent monitoring for people's life undoubtedly, can effectively reduce old man and fall down because nobody knows the best opportunity of missing treatment.The sensor that utilizes the piezoelectric effect of the stressed rear generation of some medium to make when piezoelectric transducer.So-called piezoelectric effect refers to when some electrolyte, being subject to the External Force Acting of a direction, deformation (comprising bending and telescopic shape change) occurs, and due to the polarization phenomena of internal charge, can produce on its surface the phenomenon of electric charge.Piezoelectric generally can be divided into piezoelectric monocrystal, piezoelectricity polycrystalline and organic piezoelectric materials.In piezoelectric transducer, use maximum be the quartz crystal belonging in all kinds of piezoelectric ceramics and the piezoelectric monocrystal of piezoelectricity polycrystalline.Other piezoelectric monocrystals are applicable to the Lithium metaniobate of hyperthermia radiation environment and lithium tantalate, lithium gallium oxide, bismuth germanium oxide etc. in addition.
Along with the intellectuality of life, the scheme of detecting people's various actions in bed by piezoelectric transducer is also badly in need of proposing, but also do not have at present related personnel to study in correlative technology field, therefore the present invention is directed to people's various actions in bed and proposed a kind of detecting scheme.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of bunk bed behavior monitoring method and system, for solving the blank in prior art bunk bed behavior monitoring field.
For achieving the above object and other relevant objects, the invention provides a kind of bunk bed behavior monitoring method and system.
A kind of bunk bed behavior monitoring method, described bunk bed behavior monitoring method comprises:
The piezoelectric transducer of induction bed upward pressure is set under cabinet base; Described piezoelectric transducer comprises first order pressure sensitive unit and second level pressure sensitive unit; Described first order pressure sensitive unit changes first signal of telecommunication obtaining about the variation of bunk bed action by pressure; Described second level pressure sensitive unit changes second signal of telecommunication obtaining about user's heart beating by pressure;
When after described the first signal of telecommunication generation drastic change and be finally attributed to when steady, represent to have occurred bunk bed action;
After described the first signal of telecommunication generation drastic change and after being finally attributed to steadily, if extracted heart impact signal from described second signal of telecommunication, calculate heart rate value, representing has people on bed; If do not extract heart impact signal from described second signal of telecommunication, represent the upper no one of bed.
Preferably, described piezoelectric transducer comprise first order pressure with reference to sensing unit and second level pressure with reference to sensing unit; Described first order pressure changes the first reference electrical signal obtaining about the variation of bunk bed action by pressure with reference to sensing unit; Described second level pressure changes the second reference electrical signal obtaining about user's heart beating by pressure with reference to sensing unit; Described the first reference electrical signal is as the reference signal of weighing described the first signal of telecommunication accuracy; Described the second reference electrical signal is as the reference signal of weighing described the second signal of telecommunication accuracy.
Preferably, described piezoelectric transducer is uploaded the signal of telecommunication one time every Preset Time; Described method for supervising judges monitored results one time according at least 2 group signals of telecommunication.
A kind of bunk bed Behavior Monitor System, described bunk bed Behavior Monitor System comprises: piezoelectric transducer, monitoring processing unit; Described piezoelectric transducer is arranged under cabinet base, in order to induction bed upward pressure; Described piezoelectric transducer comprises first order pressure sensitive unit and second level pressure sensitive unit; Described first order pressure sensitive unit changes first signal of telecommunication obtaining about the variation of bunk bed action by pressure; Described second level pressure sensitive unit changes second signal of telecommunication obtaining about user's heart beating by pressure; Described monitoring processing unit is connected respectively with second level pressure sensitive unit with described first order pressure sensitive unit, and after described the first signal of telecommunication generation drastic change and be finally attributed to when steady, the monitored results of bunk bed action has occurred in output; Described monitoring processing unit also, after described the first signal of telecommunication generation drastic change and after being finally attributed to steadily, provides according to whether can extract heart impact signal from described second signal of telecommunication monitored results that whether has people on bed; If can extract heart impact signal, calculate heart rate value, on output bed, there is people's monitored results; Otherwise the upper no one's of output bed monitored results.
Preferably, described piezoelectric transducer also comprises: first order pressure is with reference to sensing unit, and second level pressure is with reference to sensing unit; Described first order pressure is communicated by letter and is connected with described monitoring processing unit with reference to sensing unit, obtain the first reference electrical signal about the variation of bunk bed action by senses change in pressure, and will be uploaded to described monitoring processing unit as the first reference electrical signal of weighing described the first signal of telecommunication accuracy; Described second level pressure is communicated by letter and is connected with described monitoring processing unit with reference to sensing unit, obtain the second reference electrical signal about user's heart beating by senses change in pressure, and will be uploaded to described monitoring processing unit as the second reference electrical signal of weighing described the second signal of telecommunication accuracy.
Preferably, described piezoelectric transducer is positive characteristic piezoelectric transducer or negative characteristic piezoelectric transducer.
Preferably, described first order pressure sensitive unit and first order pressure are pre-amplifier AD modular converter with reference to sensing unit; Described second level pressure sensitive unit and second level pressure are post-amplifier AD modular converter with reference to sensing unit.
As mentioned above, bunk bed behavior monitoring method and system of the present invention, have following beneficial effect:
The invention provides a kind of criterion, the magnitude of voltage that piezoelectric transducer is measured carries out sample analysis calculating, thereby judges that people's behavior is gone to bed or from bed, thereby realizes the effective monitoring to the behavior of user's bunk bed.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of bunk bed behavior monitoring method of the present invention.
Fig. 2 is the structural representation of bunk bed Behavior Monitor System of the present invention.
Fig. 3 is the waveform schematic diagram of first signal of telecommunication that records while having people on bed.
Fig. 4 be bed upper nobody time second signal of telecommunication that records waveform schematic diagram.
Label declaration
200 bunk bed Behavior Monitor Systems
210 piezoelectric transducers
211 first order pressure sensitive units
212 second level pressure sensitive units
213 first order pressure are with reference to sensing unit
214 second level pressure are with reference to sensing unit
215 check-out consoles
220 monitoring processing units
Detailed description of the invention
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this description.The present invention can also be implemented or be applied by other different detailed description of the invention, and the every details in this description also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Refer to accompanying drawing.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Embodiment
The invention provides a kind of bunk bed behavior monitoring method, as shown in Figure 1, described bunk bed behavior monitoring method comprises:
The piezoelectric transducer of induction bed upward pressure is set under cabinet base; Described piezoelectric transducer comprises first order pressure sensitive unit and second level pressure sensitive unit; Described first order pressure sensitive unit changes first signal of telecommunication obtaining about the variation of bunk bed action by pressure; Described second level pressure sensitive unit changes second signal of telecommunication obtaining about user's heart beating by pressure.Piezoelectric transducer is pressed under cabinet base, and people just can produce pressure when stirring in bed or having other actions, the variation that these pressure just can make piezoelectric transducer produce some signals of telecommunication, and the variation of these signals of telecommunication just becomes data source.Wherein, second signal of telecommunication is the amplification of first signal of telecommunication, the amplitude range of first signal of telecommunication is 0～1023, be [462 by the first electrical signal amplitude scope, 562] the capable magnify 20 that carries out of ripple, the waveform that amplifies is out the waveform of second signal of telecommunication, " 0～1023 " is wherein quantized value, there is no unit, 0-4.2V when corresponding reference voltage value scope.First order pressure sensitive unit is to detect bunk bed operating pressure; Second level pressure sensitive unit is that the signal that first order pressure sensitive unit is detected amplifies, and then detects heart beating.
Further, described piezoelectric transducer comprise first order pressure with reference to sensing unit and second level pressure with reference to sensing unit; Described first order pressure changes the first reference electrical signal obtaining about the variation of bunk bed action by pressure with reference to sensing unit; Described second level pressure changes the second reference electrical signal obtaining about user's heart beating by pressure with reference to sensing unit; Described the first reference electrical signal is as the reference signal of weighing described the first signal of telecommunication accuracy; Described the second reference electrical signal is as the reference signal of weighing described the second signal of telecommunication accuracy.The signal of piezoelectric transducer is divided into pre-amplifier AD switching signal (be described first signal of telecommunication, can be designated as s0) and post-amplifier AD switching signal (be described second signal of telecommunication, can be designated as s1), and the precision of the signal of piezoelectric transducer can reach 1/1023.In addition, described the first reference electrical signal can be designated as s2, and described the second reference electrical signal can be designated as s2, and s2 and s3 are respectively as the contrast reference of s0 and s1, and s0 and s2 can preferentially select one in the time of follow-up computing, and s1 and s3 also can preferentially select one in the time of follow-up computing.
When after described the first signal of telecommunication generation drastic change and be finally attributed to when steady, express possibility bunk bed action has occurred;
After described the first signal of telecommunication generation drastic change and after being finally attributed to steadily, if extracted heart impact signal from described second signal of telecommunication, calculate heart rate value, representing has people on bed; If do not extract heart impact signal from described second signal of telecommunication, represent the upper no one of bed.Particularly, if having people on bed, will there is heartbeat, now record and in second signal of telecommunication, there will be in Fig. 3 special waveform, i.e. IJK wave group in black circle.IJK wave group is the saying in BCG, and corresponding ECG(electrocardiogram is called for short electrocardiogram) in QRS wave group, J is peak, a minimum point K immediately after peak, I is in centre; And in adjacent IJK wave group, the spacing of IJ is roughly the same, the spacing of JK is also roughly the same.In short, extract the method for heartbeat and find out exactly peak J, then find out thereafter minimum point K immediately.Spacing between J-K in black circle is all roughly identical, too many even if difference can not differ yet.If nobody on bed, referring to Fig. 4, first signal of telecommunication does not have IJK wave group.
Described piezoelectric transducer is uploaded the signal of telecommunication one time every Preset Time; Described method for supervising judges monitored results one time according at least 2 group signals of telecommunication.General, in order to make the data that calculate more accurate, then can carry out computing just also need to do some data collections.For example: piezoelectric transducer is uploaded one group of data for every 5 seconds, data backstage is starting to collect after data, wait for could be to first judged result (at bed/from bed) after within 30 seconds, receiving 6 groups of data, then the data that newly receive afterwards for 5 seconds provide second judged result in conjunction with 5 groups of data above again, by that analogy.Each calculating is all taking 6 groups of data as calculating sample, and object is just to reduce erroneous judgement situation.
The invention provides a kind of method that judges the behavior of user's bunk bed based on piezoelectric transducer, it provides a kind of criterion, and the magnitude of voltage that piezoelectric transducer is measured carries out sample analysis calculating, thereby judges that people's behavior is gone to bed or from bed.Bunk bed behavior monitoring method of the present invention can realize the effective monitoring to the behavior of user's bunk bed.
The present invention is only applicable to single bed, and acquiescence is only for single effective.
The present invention also provides a kind of bunk bed Behavior Monitor System, and this system can realize above-mentioned bunk bed behavior monitoring method, but the implement device of described bunk bed behavior monitoring method includes but not limited to bunk bed Behavior Monitor System of the present invention.As shown in Figure 2, described bunk bed Behavior Monitor System 200 comprises: piezoelectric transducer 210, monitoring processing unit 220; It is date processing backstage that described piezoelectric transducer 210 is given monitoring processing unit 220(by gateway by the data upload of output).Described piezoelectric transducer 210 is arranged under cabinet base, in order to induction bed upward pressure; Described piezoelectric transducer 210 comprises check-out console 215, first order pressure sensitive unit 211 and second level pressure sensitive unit 212; Described check-out console 215 is in order to the variation of induction pressure; Described first order pressure sensitive unit 211 is connected with described check-out console 215, changes first signal of telecommunication obtaining about the variation of bunk bed action by pressure; Described second level pressure sensitive unit 212 is connected with described check-out console 215, changes second signal of telecommunication obtaining about user's heart beating by pressure; Described monitoring processing unit 220 is connected respectively with second level pressure sensitive unit 212 with described first order pressure sensitive unit 211, and after described the first signal of telecommunication generation drastic change and be finally attributed to when steady, the monitored results of bunk bed action has occurred in output; Described monitoring processing unit 220 also, after described the first signal of telecommunication generation drastic change and after being finally attributed to steadily, provides according to whether can extract heart impact signal from described second signal of telecommunication monitored results that whether has people on bed; If can extract heart impact signal, calculate heart rate value, on output bed, there is people's monitored results; Otherwise the upper no one's of output bed monitored results.
Further, described piezoelectric transducer 210 also comprises: first order pressure is with reference to sensing unit 213, and second level pressure is with reference to sensing unit 214; Described first order pressure is communicated by letter and is connected respectively with described monitoring processing unit 220 with described check-out console 215 with reference to sensing unit 213, obtain the first reference electrical signal about the variation of bunk bed action by senses change in pressure, and will be uploaded to described monitoring processing unit as the first reference electrical signal of weighing described the first signal of telecommunication accuracy; Described second level pressure is communicated by letter and is connected respectively with described monitoring processing unit 220 with described check-out console 215 with reference to sensing unit 214, obtain the second reference electrical signal about user's heart beating by senses change in pressure, and will be uploaded to described monitoring processing unit as the second reference electrical signal of weighing described the second signal of telecommunication accuracy.
Further, described piezoelectric transducer is positive characteristic piezoelectric transducer or negative characteristic piezoelectric transducer.
Different piezoelectric transducers has different characteristics, as: align the pressurization of characteristic piezoelectric transducer, the voltage of its output can reduce suddenly, and along with circuit discharges and recharges effect, then the voltage waveform of positive characteristic piezoelectric transducer output can revert near 512; Align the decompression of characteristic piezoelectric transducer, the voltage of its output can increase suddenly, and along with circuit discharges and recharges effect, then the voltage waveform of positive characteristic piezoelectric transducer output can revert near 512.And to the pressurization of negative characteristic piezoelectric transducer, the voltage of its output can increase suddenly, along with circuit discharges and recharges effect, then the voltage waveform of negative characteristic piezoelectric transducer output can revert near 512; To the decompression of negative characteristic piezoelectric transducer, the voltage of its output can reduce suddenly, and along with circuit discharges and recharges effect, then the output voltage waveforms of negative characteristic piezoelectric transducer can revert near 512.
Further, described first order pressure sensitive unit and first order pressure are pre-amplifier AD modular converter with reference to sensing unit; Described second level pressure sensitive unit and second level pressure are post-amplifier AD modular converter with reference to sensing unit.
In hardware circuit design, the output voltage values of piezoelectric transducer after amplifying pind down by upper and lower two high resistance, in the time that pressure signal changes, can produce change in electric, once pressure signal disappears, output electrical signals can slowly revert to initial intermediate value state.
Particularly, it (is described first signal of telecommunication that the signal of piezoelectric transducer output is divided into pre-amplifier AD switching signal, can be designated as s0) and post-amplifier AD switching signal (be described second signal of telecommunication, can be designated as s1), the precision of the signal of piezoelectric transducer can reach 1/1023.In addition, described the first reference electrical signal can be designated as s2, and described the second reference electrical signal can be designated as s2, and s2 and s3 are respectively as the contrast reference of s0 and s1, and s0 and s2 can preferentially select one in the time of follow-up computing, and s1 and s3 also can preferentially select one in the time of follow-up computing.S0 and s2 be for detection of compared with big-movement, as stand up, and sits up, from bed etc.; S1 and s3 do for detection of fine motions such as heart beatings.
In the time being bestowed with weight on the check-out console of the piezoelectric transducer of positive characteristic, the value of s0 and s2 occurs suddenly to drop, and is even directly reduced to 0; Owing to adjusting the actions such as sleeping position, s0 and s2 have a series of 0-1023 to be changed up and down afterwards; Get off not have big-movement behavior generation once calm down, the value of s0 and s2 is tending towards near 512.Now observe again s1 and s3, these two signals of telecommunication are mainly used to comparison and detection heart beating numerical value, when detect the heart impact signal (BCG) of rule from s1 and s3 time, just can extract heart rate value according to heart impact signal, now can think that state becomes " bed has people " from " empty bed ".Due to the action of people from bed central mobile to bedside, can cause the value of s0 and s2 to have a series of 0-1023 to change up and down, afterwards because people has left bed, be equivalent to bed and a upper moment lacked a weight, can there is drastic change rising in the value of s0 and s2, even leaps to 1023, next, owing to there is no weight on bed, cabinet base tends to be steady to the pressure of check-out console, and now s0 and s2 can revert near intermediate value 512 lentamente.If piezoelectric transducer is negative characteristic, situation is completely contrary.
The present invention has filled up the blank in detecting people this field of exercises in bed, not only can monitor people's bunk bed behavior, can also estimate people's heart beating.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (7)
1. a bunk bed behavior monitoring method, is characterized in that, described bunk bed behavior monitoring method comprises:
The piezoelectric transducer of induction bed upward pressure is set under cabinet base; Described piezoelectric transducer comprises first order pressure sensitive unit and second level pressure sensitive unit; Described first order pressure sensitive unit changes first signal of telecommunication obtaining about the variation of bunk bed action by pressure; Described second level pressure sensitive unit changes second signal of telecommunication obtaining about user's heart beating by pressure;
When after described the first signal of telecommunication generation drastic change and be finally attributed to when steady, represent to have occurred bunk bed action;
After described the first signal of telecommunication generation drastic change and after being finally attributed to steadily, if extracted heart impact signal from described second signal of telecommunication, calculate heart rate value, representing has people on bed; If do not extract heart impact signal from described second signal of telecommunication, represent the upper no one of bed.
2. bunk bed behavior monitoring method according to claim 1, is characterized in that: described piezoelectric transducer comprise first order pressure with reference to sensing unit and second level pressure with reference to sensing unit; Described first order pressure changes the first reference electrical signal obtaining about the variation of bunk bed action by pressure with reference to sensing unit; Described second level pressure changes the second reference electrical signal obtaining about user's heart beating by pressure with reference to sensing unit; Described the first reference electrical signal is as the reference signal of weighing described the first signal of telecommunication accuracy; Described the second reference electrical signal is as the reference signal of weighing described the second signal of telecommunication accuracy.
3. bunk bed behavior monitoring method according to claim 1, is characterized in that: described piezoelectric transducer is uploaded the signal of telecommunication one time every Preset Time; Described method for supervising judges monitored results one time according at least 2 group signals of telecommunication.
4. a bunk bed Behavior Monitor System, is characterized in that, described bunk bed Behavior Monitor System comprises:
Piezoelectric transducer, is arranged under cabinet base, in order to induction bed upward pressure; Described piezoelectric transducer comprises first order pressure sensitive unit and second level pressure sensitive unit; Described first order pressure sensitive unit changes first signal of telecommunication obtaining about the variation of bunk bed action by pressure; Described second level pressure sensitive unit changes second signal of telecommunication obtaining about user's heart beating by pressure;
Monitoring processing unit, is connected respectively with second level pressure sensitive unit with described first order pressure sensitive unit, and after described the first signal of telecommunication generation drastic change and be finally attributed to when steady, the monitored results that bunk bed moves has occurred in output; Described monitoring processing unit also, after described the first signal of telecommunication generation drastic change and after being finally attributed to steadily, provides according to whether can extract heart impact signal from described second signal of telecommunication monitored results that whether has people on bed; If can extract heart impact signal, calculate heart rate value, on output bed, there is people's monitored results; Otherwise the upper no one's of output bed monitored results.
5. bunk bed Behavior Monitor System according to claim 4, is characterized in that, described piezoelectric transducer also comprises:
First order pressure is with reference to sensing unit, communicate by letter and be connected with described monitoring processing unit, obtain the first reference electrical signal about the variation of bunk bed action by senses change in pressure, and will be uploaded to described monitoring processing unit as the first reference electrical signal of weighing described the first signal of telecommunication accuracy;
Second level pressure is with reference to sensing unit, communicate by letter and be connected with described monitoring processing unit, obtain the second reference electrical signal about user's heart beating by senses change in pressure, and will be uploaded to described monitoring processing unit as the second reference electrical signal of weighing described the second signal of telecommunication accuracy.
6. bunk bed Behavior Monitor System according to claim 4, is characterized in that: described piezoelectric transducer is positive characteristic piezoelectric transducer or negative characteristic piezoelectric transducer.
7. bunk bed Behavior Monitor System according to claim 4, is characterized in that: described first order pressure sensitive unit and first order pressure are pre-amplifier AD modular converter with reference to sensing unit; Described second level pressure sensitive unit and second level pressure are post-amplifier AD modular converter with reference to sensing unit.
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| CN106539564A (en) * | 2017-01-25 | 2017-03-29 | 深圳贝特莱电子科技股份有限公司 | A kind of bunk bed monitoring method based on Sleeping band |
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| CN108814614A (en) * | 2018-03-30 | 2018-11-16 | 东软熙康阿尔卑斯（沈阳）科技有限公司 | It is a kind of for monitoring the method, apparatus and system of user action |
| CN110638460A (en) * | 2019-09-16 | 2020-01-03 | 深圳和而泰家居在线网络科技有限公司 | Method, device and equipment for detecting state of object relative to bed |
| CN110638460B (en) * | 2019-09-16 | 2022-07-15 | 深圳数联天下智能科技有限公司 | Method, device and equipment for detecting state of object relative to bed |
| CN113476022A (en) * | 2020-11-24 | 2021-10-08 | 四川远邦益安科技有限公司 | Sleep monitoring system for resident students |
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Application publication date: 20141105 |