CN103245974A - Fall detecting method and system - Google Patents
Fall detecting method and system Download PDFInfo
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- CN103245974A CN103245974A CN2012100254899A CN201210025489A CN103245974A CN 103245974 A CN103245974 A CN 103245974A CN 2012100254899 A CN2012100254899 A CN 2012100254899A CN 201210025489 A CN201210025489 A CN 201210025489A CN 103245974 A CN103245974 A CN 103245974A
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Abstract
The invention provides a fall detecting method and system which are used for a splicable fall detecting carpet. The splicable fall detecting carpet comprises a plurality of areas capable of outputting electrical signals. The fall detecting method comprises the following steps: firstly, acquiring the quantities of the electrical signals output by the areas of the splicable fall detecting carpet at least twice; and secondly, confirming whether a fall happens on the basis of the acquired quantities of the electrical signals every twice. According to the detecting method, whether the fall happens can be confirmed only on the basis of the change of the twice acquired quantities of the electrical signals which are output by the splicable fall detecting carpet. The fall detecting method is simple and easy to carry out, and can be extensively applied in homes, welfare houses, hospitals and the like.
Description
Technical field
The present invention relates to detection range, particularly relate to a kind of fall detection method and system.
Background technology
Along with China enters aging society, old man colony increases rapidly, and the old man is owing to the reason of health is very likely fallen, and old man's the behavior of falling is fatal often.
Existing fall detection technology has a variety of, classify from the channel of signals collecting, the fall detection technology can be divided into four classes: based on the fall detection technology of video, based on the fall detection technology of acoustics, based on the fall detection technology of Wearable sensor and based on the fall detection technology of pressure transducer.
Fall detection technology based on video is to catch the human motion picture by one or several video frequency pick-up head, determines whether to exist the characteristics of image of falling through image processing algorithm again.For example, the fall detection method based on video by Canadian Caroline Rougier design is by in monitored person family video frequency pick-up head being installed, utilize computer vision algorithms make to carry out the analysis of human body attitude, motion process and human figure variation are combined, survey monitored person thus and whether taken place to fall.
Be that sound signal when falling by analysis detects based on the fall detection technology of acoustics.The precision of common this method is relatively poor, general the auxiliary detection as other detection methods.
Fall detection technology based on the Wearable sensor is that the fall detection device is worn on monitored person's the body, come the variation of its body posture of perception by the acceleration change of three orthogonal directionss of monitored person in motion process, and judge this monitored person generation of whether falling by Algorithm Analysis.
Generally be applied to indoorly based on the fall detection technology of pressure transducer, its ultimate principle is at underfloor a plurality of pressure transducers to be installed, and judges the generation of whether falling based on the information analyses such as shape to the signal of pressure transducer.
The applied algorithm complexity of above-mentioned fall detection technology needs higher hardware configuration to support complex calculations, therefore is difficult to popularize.So, how to provide whether a kind of algorithm is easy, cost is not high, can monitor the old man simultaneously again in real time has the fall detection method and system that take place of falling to become the technical task that those skilled in the art need to be resolved hurrily.
Summary of the invention
The shortcoming of prior art the object of the present invention is to provide a kind of fall detection method and system that are simple and easy to execute in view of the above.
Reach other relevant purposes for achieving the above object, the invention provides a kind of fall detection method, be used for sliceable fall detection carpet, wherein said sliceable fall detection carpet has a plurality of zones that can export electric signal, and described fall detection method comprises step at least: 1) at least twice quantity of obtaining the electric signal of zone that described sliceable fall detection carpet comprises exporting; 2) based on the generation that determined whether to fall of the quantity of the electric signal that obtains for per twice.
Preferably, described step 2) also comprise: based on the generation that determined whether to fall of the quantity of the electric signal that obtains for per twice and acquisition time.
Preferably, described step 1) also comprises: the quantity of periodically obtaining the electric signal of zone that described sliceable fall detection carpet comprises exporting.
Preferably, described step 2) also comprise: when the difference of the acquisition time of the electric signal that obtains for twice less than the quantity difference of schedule time threshold value and the electric signal that obtains for twice greater than 6, then define the generation of falling.
Based on above-mentioned purpose, the present invention also provides a kind of fall detection system, be used for sliceable fall detection carpet, wherein said sliceable fall detection carpet has a plurality of zones that can export electric signal, described fall detection system comprises at least: acquisition module is used at least twice quantity of obtaining the electric signal of zone that described sliceable fall detection carpet comprises exporting; Judge module is used for the generation that determined whether to fall of quantity based on the electric signal that obtains for per twice.
Preferably, described judge module also comprises: the first sub-judge module is used for based on the generation that determined whether to fall of the quantity of the electric signal that obtains for per twice and acquisition time.
Preferably, described acquisition module also comprises: sub-acquisition module is used for periodically obtaining the quantity of the electric signal of zone that described sliceable fall detection carpet comprises exporting.
Preferably, described one sub-judge module also comprises: the second sub-judge module is used for when the difference of the acquisition time of the electric signal that obtain for twice less than the quantity difference of schedule time threshold value and the electric signal that obtains for twice then defining the generation of falling greater than 6.
As mentioned above, fall detection method and system of the present invention, have following beneficial effect: method of the present invention only needs can determine whether the generation of falling based on the variation of the quantity of the electric signal of exporting in the sliceable fall detection carpet that obtains for twice, this law is simple and easy to execute, and can be widely used in places such as family, welfare home, hospital.
Description of drawings
Fig. 1 is shown as the process flow diagram of fall detection method of the present invention.
Fig. 2 is shown as the structural representation of fall detection system of the present invention.
The element numbers explanation
1 fall detection system
11 acquisition modules
12 judge modules
The S1-S2 step
Embodiment
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 instructions.The present invention can also be implemented or be used by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
Fig. 1 is shown as the process flow diagram of fall detection method of the present invention.Described fall detection method is used for sliceable fall detection carpet, wherein, described sliceable fall detection carpet has a plurality of zones that can export electric signal, preferably, each zone forms a kind of button structure, when a zone is trampled, can export an electric signal, when the zone is not trampled, then do not export electric signal.
Wherein, described fall detection method is mainly carried out by fall detection system, and described fall detection system is to be installed in application module in the computer equipment etc.This computer equipment is a kind ofly can carry out the modernized intelligent electronic device of massive values computation and various information processings automatically, at high speed according to prior program stored, and its hardware includes but not limited to microprocessor, FPGA, DSP, embedded device etc.
In step S1, described fall detection system at least twice obtains the quantity of the electric signal of zone that described sliceable fall detection carpet comprises exporting.
Wherein, the described fall detection system mode of obtaining the quantity of the electric signal of zone that described sliceable fall detection carpet comprises exporting includes but not limited to: link to each other to fetch by the communication interface with described fall detection carpet and obtain etc.
Then, in step S2, described fall detection system is based on the generation that determined whether to fall of the quantity of the output electric signal that obtains for per twice.
Particularly, described fall detection system is based on the whether a predetermined level is exceeded threshold value generation that determined whether to fall of the quantity difference of the electric signal that obtains for adjacent twice.
For example, described fall detection system based on the quantity of the electric signal that obtains for the first time be 2, the quantity of the electric signal that obtains for the second time is 9, the quantity difference of determining the electric signal that obtains for twice is 7, and a predetermined level is exceeded threshold value 6, and then described fall detection system defines the generation of falling.
As a kind of preferred version, the method according to this invention also comprises based on the quantity of the electric signal that obtains for per twice and acquisition time and determines whether the step of falling and taking place.
Particularly, described fall detection system based on the quantity difference of the electric signal that obtains for twice whether a predetermined level is exceeded threshold value and the difference of acquisition time of obtaining electric signal for twice whether less than the generation that determined whether to fall of schedule time threshold value.
For example, the acquisition time of twice electric signal that described fall detection system obtains is respectively 2011-12-12 10:13:58 and 2011-12-12 10:13:59, the quantity of twice electric signal that obtains is respectively 3 and 13, then described fall detection system is 10 based on the quantity difference of the electric signal that obtains for twice, the difference of the acquisition time of a predetermined level is exceeded threshold value 6 and twice electric signal is 1 second, less than schedule time threshold value 2 seconds, define the generation of falling.
As a kind of preferred version, described step S1 also comprises step S1 ' (not giving diagram).
In step S1 ', described fall detection system periodically obtains the quantity in the zone of output electric signal in the zone that described sliceable fall detection carpet comprises.
For example, described fall detection system with p.s. 30 times frequency read the data of the communication interface of described sliceable fall detection carpet, and store the electric signal of described sliceable each regional current output of fall detection carpet and the electric signal of output of previous cycle, subsequently, whether described fall detection system by relatively draw the electric signal quantity that described sliceable fall detection carpet exports in one-period variation has taken place again, if do not change then the generation of determining not fall, effectively reduce the load of equipment.
Fig. 2 is shown as the structural representation of fall detection system of the present invention.Described fall detection system comprises: acquisition module 11, judge module 12.
Described acquisition module 11 is used at least twice quantity of obtaining the electric signal of zone that described sliceable fall detection carpet comprises exporting.
Wherein, described acquisition module 11 mode of obtaining the quantity of the electric signal of zone that described sliceable fall detection carpet comprises exporting includes but not limited to: link to each other to fetch by the communication interface with described fall detection carpet and obtain etc.
Described judge module 12 is used for the generation that determined whether to fall of quantity based on the output electric signal that obtains for per twice.
Particularly, described judge module 12 is based on the whether a predetermined level is exceeded threshold value generation that determined whether to fall of the quantity difference of the electric signal that obtains for adjacent twice.
For example, described judge module 12 based on the quantity of the electric signal that obtains for the first time be 2, the quantity of the electric signal that obtains for the second time is 9, the quantity difference of determining the electric signal that obtains for twice is 7, and a predetermined level is exceeded threshold value 6, and then described judge module 12 defines the generation of falling.
As a kind of preferred version, described judge module 12 also comprises the first sub-judge module (not giving diagram).
The described first sub-judge module is used for based on the generation that determined whether to fall of the quantity of the electric signal that obtains for per twice and acquisition time.
Preferably, the described first sub-judge module also comprises the second sub-judge module (not giving diagram).The described second sub-judge module be used for based on the quantity difference of the electric signal that obtains for twice greater than 6 and the difference of acquisition time of obtaining electric signal for twice whether less than the generation that determined whether to fall of schedule time threshold value.
For example, the acquisition time of twice electric signal that described acquisition module 11 obtains is respectively 2011-12-12 10:13:58 and 2011-12-12 10:13:59, the quantity of twice electric signal that obtains is respectively 3 and 13, then the described second sub-judge module is 10 based on the quantity difference of the electric signal that obtains for twice, surpass 6 and the difference of the acquisition time of twice electric signal be 1 second, less than schedule time threshold value 2 seconds, define the generation of falling.
As a kind of preferred version, described acquisition module 11 also comprises sub-acquisition module (not giving diagram).
Described sub-acquisition module is used for periodically obtaining the quantity in the zone of the zone output electric signal that described sliceable fall detection carpet comprises.
For example, described sub-acquisition module with p.s. 30 times frequency read the data of the communication interface of described sliceable fall detection carpet, and store the electric signal of described sliceable each regional current output of fall detection carpet and the electric signal of output of previous cycle, subsequently, whether described sub-acquisition module by relatively draw the electric signal quantity that described sliceable fall detection carpet exports in one-period variation has taken place again, if do not change then the generation of determining not fall, effectively reduce the load of equipment.
In sum, method and system of the present invention only need can determine whether the generation of falling based on the variation of the quantity of the electric signal of exporting in the sliceable fall detection carpet that obtains for twice, this law is simple and easy to execute, and can be widely used in places such as family, welfare home, hospital.So the present invention has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (8)
1. a fall detection method is used for sliceable fall detection carpet, and wherein said sliceable fall detection carpet has a plurality of zones that can export electric signal, it is characterized in that, described fall detection method comprises step at least:
A) at least twice quantity of obtaining the electric signal of zone that described sliceable fall detection carpet comprises exporting;
B) based on the generation that determined whether to fall of the quantity of the electric signal that obtains for per twice.
2. fall detection method according to claim 1 is characterized in that: described step 2) also comprise:
Based on the generation that determined whether to fall of the quantity of the electric signal that obtains for per twice and acquisition time.
3. fall detection method according to claim 1, it is characterized in that: described step 1) also comprises:
Periodically obtain the quantity of the electric signal of zone that described sliceable fall detection carpet comprises exporting.
4. fall detection method according to claim 2 is characterized in that: described step 2) also comprise:
When the difference of the acquisition time of the electric signal that obtains for twice less than the quantity difference of schedule time threshold value and the electric signal that obtains for twice greater than 6, then define the generation of falling.
5. a fall detection system is used for sliceable fall detection carpet, and wherein said sliceable fall detection carpet has a plurality of zones that can export electric signal, it is characterized in that described fall detection system comprises at least:
Acquisition module is used at least twice quantity of obtaining the electric signal of zone that described sliceable fall detection carpet comprises exporting;
Judge module is used for the generation that determined whether to fall of quantity based on the electric signal that obtains for per twice.
6. fall detection system according to claim 5, it is characterized in that: described judge module also comprises:
The first sub-judge module is used for based on the generation that determined whether to fall of the quantity of the electric signal that obtains for per twice and acquisition time.
7. fall detection system according to claim 5, it is characterized in that: described acquisition module also comprises:
Sub-acquisition module is used for periodically obtaining the quantity of the electric signal of zone that described sliceable fall detection carpet comprises exporting.
8. fall detection system according to claim 6, it is characterized in that: described one sub-judge module also comprises:
The second sub-judge module is used for when the difference of the acquisition time of the electric signal that obtain for twice less than the quantity difference of schedule time threshold value and the electric signal that obtains for twice then defining the generation of falling greater than 6.
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| CN2012100254899A CN103245974A (en) | 2012-02-06 | 2012-02-06 | Fall detecting method and system |
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| CN2012100254899A CN103245974A (en) | 2012-02-06 | 2012-02-06 | Fall detecting method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205049A (en) * | 2016-08-07 | 2016-12-07 | 周红林 | The intelligent carpet of detection alarm technique fallen down by a kind of band |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06168391A (en) * | 1992-11-30 | 1994-06-14 | Matsushita Electric Works Ltd | Fall-down alarming device |
| CN1731953A (en) * | 2002-11-20 | 2006-02-08 | 赫艾纳医疗公司 | Devices and methods for passive patient monitoring |
| EP2050426A1 (en) * | 2007-10-19 | 2009-04-22 | INSERM (Institut National de la Santé et de la Recherche Médicale) | Active floor mate to monitor sick person |
| CN201469560U (en) * | 2009-08-26 | 2010-05-19 | 深圳市翰群科技有限公司 | Induction cushion |
| CN101972102A (en) * | 2010-08-31 | 2011-02-16 | 浙江大学 | Bath mat with accidental fall alarm prompt function |
-
2012
- 2012-02-06 CN CN2012100254899A patent/CN103245974A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06168391A (en) * | 1992-11-30 | 1994-06-14 | Matsushita Electric Works Ltd | Fall-down alarming device |
| CN1731953A (en) * | 2002-11-20 | 2006-02-08 | 赫艾纳医疗公司 | Devices and methods for passive patient monitoring |
| EP2050426A1 (en) * | 2007-10-19 | 2009-04-22 | INSERM (Institut National de la Santé et de la Recherche Médicale) | Active floor mate to monitor sick person |
| CN201469560U (en) * | 2009-08-26 | 2010-05-19 | 深圳市翰群科技有限公司 | Induction cushion |
| CN101972102A (en) * | 2010-08-31 | 2011-02-16 | 浙江大学 | Bath mat with accidental fall alarm prompt function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205049A (en) * | 2016-08-07 | 2016-12-07 | 周红林 | The intelligent carpet of detection alarm technique fallen down by a kind of band |
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