CN105551194B - Fall detection method and device - Google Patents
Fall detection method and device Download PDFInfo
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- CN105551194B CN105551194B CN201610137313.0A CN201610137313A CN105551194B CN 105551194 B CN105551194 B CN 105551194B CN 201610137313 A CN201610137313 A CN 201610137313A CN 105551194 B CN105551194 B CN 105551194B
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 230000037396 body weight Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000006872 improvement Effects 0.000 description 11
- 230000002463 transducing effect Effects 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
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- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0407—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis
- G08B21/043—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis detecting an emergency event, e.g. a fall
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0438—Sensor means for detecting
- G08B21/0446—Sensor means for detecting worn on the body to detect changes of posture, e.g. a fall, inclination, acceleration, gait
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a falling detection method and a falling detection device, wherein a first pressure sensor arranged on the inner side of a sole, a second pressure sensor arranged on the inner side of a middle upper of a shoe back and a third pressure sensor arranged on the inner side of the upper of the shoe back are used for respectively acquiring a first pressure signal, a second pressure signal and a third pressure signal in real time; if the duration of the acquired first pressure signal, the acquired second pressure signal and the acquired third pressure signal meeting the following conditions reaches a preset time threshold: if the first pressure signal is smaller than a first preset threshold, the second pressure signal is larger than a second preset threshold or the third pressure signal is larger than a third preset threshold, the person is judged to fall; and sending out a falling alarm signal when the user determines that the user falls. The invention can accurately detect falling, and has simple realization method and low cost.
Description
Technical field
The present invention relates to intelligent shoe field, more particularly to a kind of fall detection method and falling detection device.
Background technology
Counted according to related data, tumble is the most common accident of current children, accounts for the 44% of all children's accidents；Fall
As one of over-65s old man's accident disability and dead major reason.When tumble accident occurs, if tumble person cannot
Treatment in time, causing it, gesture is delayed the great threat caused to health situation due to wound, and for cardiovascular and cerebrovascular disease
Even lethal possibility can occur for the patient of disease and hypertension.Therefore, fall detection is carried out extremely to potential tumble people at highest risk
Close important.
In order to detect tumble event, it has been proposed that the measure detected for tumble event.Such as：Three axles are accelerated
Degree sensor, angular-rate sensor and pressure sensor are located at sole, and three groups of different biographies are measured simultaneously by three kinds of sensors
Data are felt to judge whether human body falls.But 3-axis acceleration sensor and angular speed of this method because employing high cost
Sensor make it that its cost of implementation is high to detect user's tumble state, meanwhile, sensed by 3-axis acceleration sensor, angular speed
The sensing data species that device and pressure sensor are got is more, causes to answer the processing procedure of data in the fall detection method
It is miscellaneous.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of fall detection method and device, can accurately detect
Fall, and cost of implementation is low, implementation method is simple.
In order to solve the above technical problems, fall detection method provided by the invention, comprises the following steps：
S1：Pass through the first pressure sensor on the inside of sole, the second pressure sensor after footwear on the inside of middle side
And the 3rd pressure sensor on the inside of counter collection first pressure signal, second pressure signal and the in real time respectively
Three pressure signals；
S2：If the first pressure signal, second pressure signal and the 3rd pressure signal that collect meet following condition
Duration reach default time threshold：First pressure signal is less than the first predetermined threshold value, second pressure signal is more than the
Two predetermined threshold values or the 3rd pressure signal are more than the 3rd predetermined threshold value, then are judged as falling；
S3：Tumble alarm signal is sent in the case where being judged as falling.
As the improvement of such scheme, in addition to step：
In the case where the first pressure signal, second pressure signal and the 3rd pressure signal are 0, described the is reduced
The frequency acquisition of one pressure sensor, second pressure sensor and the 3rd pressure sensor.
As the improvement of such scheme, the step S2 is specifically included：
First pressure signal, second pressure signal and the 3rd pressure signal are read by default reading frequency；Institute
State the frequency acquisition that reading frequency is less than or equal to first pressure sensor, second pressure sensor and the 3rd pressure sensor；
If the first pressure signal, second pressure signal and the 3rd pressure signal that read meet holding for following condition
The continuous time reaches default time threshold：It is pre- more than second that first pressure signal is less than the first predetermined threshold value, second pressure signal
If threshold value or the 3rd pressure signal are more than the 3rd predetermined threshold value, then it is judged as falling.
As the improvement of such scheme, in addition to step：
In the case where the first pressure signal, second pressure signal and the 3rd pressure signal are 0, the reading is reduced
Take frequency.
As the improvement of such scheme, before step S2, in addition to：
When the first pressure signal collected reaches default human body weight scope first, the institute that will currently collect
State first pressure signal, second pressure signal and the 3rd pressure signal and be recorded as the first predetermined threshold value, the second predetermined threshold value respectively
With the 3rd predetermined threshold value.
In order to solve the above technical problems, the present invention also provides a kind of falling detection device, including：
First pressure sensor, on the inside of sole, for gathering first pressure signal；
Second pressure sensor, after footwear on the inside of middle side, for gathering second pressure signal；
3rd pressure sensor, on the inside of counter, for gathering the 3rd pressure signal；
Central processing module, if for the first pressure signal, second pressure signal and the 3rd the pressure letter collected
Number meet that the duration of following condition reaches default time threshold：First pressure signal is less than the first predetermined threshold value, second
Pressure signal is more than the second predetermined threshold value or the 3rd pressure signal is more than the 3rd predetermined threshold value, then is judged as falling；
Alarm module, for central processing module judges for fall in the case of send tumble alarm signal.
As the improvement of such scheme, the falling detection device also includes：
Frequency acquisition adjustment module, for equal in the first pressure signal, second pressure signal and the 3rd pressure signal
In the case of 0, the frequency acquisition of the first pressure sensor, second pressure sensor and the 3rd pressure sensor is reduced.
As the improvement of such scheme, the central processing module includes：
Reading unit, for reading the first pressure signal, second pressure signal and the by default reading frequency
Three pressure signals；The reading frequency is less than or equal to first pressure sensor, second pressure sensor and the 3rd pressure sensing
The frequency acquisition of device；
Judging unit, if expiring for the first pressure signal, second pressure signal and the 3rd pressure signal read
The duration for being enough lower condition reaches default time threshold：First pressure signal is less than the first predetermined threshold value, second pressure
Signal is more than the second predetermined threshold value or the 3rd pressure signal is more than the 3rd predetermined threshold value, then is judged as falling.
As the improvement of such scheme, the central processing module also includes：
Reading frequency adjustment unit, for first pressure signal, the second pressure signal read in the reading unit
In the case of being 0 with the 3rd pressure signal, the reading frequency is reduced.
Improvement as such scheme, it is characterised in that the falling detection device also includes：
Presetting module, for when the first pressure signal collected reaches default human body weight scope first, inciting somebody to action
The first pressure signal, second pressure signal and the 3rd pressure signal currently collected is recorded as the first default threshold respectively
Value, the second predetermined threshold value and the 3rd predetermined threshold value.
As the improvement of such scheme, the falling detection device also includes：
Power module, for the first pressure sensor, second pressure sensor, the 3rd pressure sensor and center
Processing module is powered.
Compared with prior art, a kind of fall detection method provided by the invention and device pass through different on the inside of shoe cavity
The pressure sensor of position gathers multiple pressure signals in real time, and the data of abundance, Ke Yiti are provided for the judgement of tumble state
The accuracy of high detection；The foot of human body fitting situation different from ground when being in tumble state according to human body, meeting to adopt
First pressure signal, second pressure signal and the 3rd pressure signal collected meets that first pressure signal is less than the first default threshold
Value, second pressure signal are more than the second predetermined threshold value or the 3rd pressure signal and reach pre- more than the duration of the 3rd predetermined threshold value
If time threshold condition judgment to fall, just send alarm signal in the case where being judged as falling, the detection method is accurate
Really, simply, can effectively avoid that erroneous judgement of falling occurs；Pertain only in this process at single pressure sensor signal simultaneously
Reason, signal processing are simple；In addition, because sensor type used in the device is single, cost is relatively low, additionally it is possible to reduce
The cost of device.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation applied the present invention relates to a kind of fall detection method and device on shoes.
Fig. 2 is the schematic flow sheet of the fall detection method of the embodiment of the present invention 1.
Fig. 3 is the step S2 of the embodiment of the present invention 2 refinement schematic flow sheet.
Fig. 4 is the predetermined threshold value of record first, the second predetermined threshold value and the 3rd predetermined threshold value step of the embodiment of the present invention 3
Refine schematic flow sheet.
Fig. 5 is the structural representation of the falling detection device of the embodiment of the present invention 4.
Fig. 6 is the structural representation of the falling detection device including frequency acquisition adjustment module of inventive embodiments 5.
Fig. 7 is the structure of the falling detection device for including central processing module refinement functional module of the embodiment of the present invention 6
Schematic diagram.
Fig. 8 is the structural representation for the falling detection device that the embodiment of the present invention 6 includes reading frequency adjustment unit.
Fig. 9 is the structural representation of the falling detection device including presetting module of the embodiment of the present invention 7.
Figure 10 is the structural representation for the falling detection device that the embodiment of the present invention 4 includes power supply.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is the structural representation applied the present invention relates to a kind of fall detection method and device on shoes referring to Fig. 1.Such as
Shown in Fig. 1, the fall detection method and device are included located at 2 first pressure sensor 10, the middle side 3 after footwear on the inside of sole
The second pressure sensor 11 of inner side and the 3rd pressure sensor 12 located at the inner side of counter 4.Wherein, sole inner side 2 is
The user face that shoes are contacted with the sole of user foot 1 after shoes are put on；Shoes are being put in the middle inner side of side 3 for user after footwear
Shoes are in contact inwall with the side of user foot 1 afterwards；The inner side of counter 4 shoes and user foot after shoes are put on for user
1 heel position contact inwall.
Referring to Fig. 1~2, fall detection method of the invention comprises the following steps：
S1：By being passed located at 2 first pressure sensor 10, the second pressure after footwear on the inside of middle side 3 on the inside of sole
Sensor 11 and the 3rd pressure sensor 12 on the inside of counter 4 gather first pressure signal, second pressure in real time respectively
Signal and the 3rd pressure signal；
S2：If the first pressure signal collected, second pressure signal and the 3rd pressure signal meet holding for following condition
The continuous time reaches default time threshold：It is pre- more than second that first pressure signal is less than the first predetermined threshold value, second pressure signal
If threshold value or the 3rd pressure signal are more than the 3rd predetermined threshold value, then it is judged as falling；
S3：Tumble alarm signal is sent in the case where being judged as falling.
Multiple pressure sensors are located on the inside of shoe cavity by the fall detection method, to gather multiple positions pair of user foot
Pressure signal caused by shoe cavity, and judge whether user is in tumble state with the use of multiple pressure signals.Such as：Work as user
When facing sky and lying on the ground, if the outside of user's counter 4 contacts with ground, the 3rd pressure sensor 12 can detect
Larger pressure signal, and middle side 3 does not contact with ground on the outside of sole and after footwear, first pressure sensor 10 and second pressure pass
The pressure signal very little that sensor 11 detects, even 0；, can be to the middle production of side 3 after footwear if being bonded on the outside of the sole of user with ground
Raw larger extruding, then second pressure sensor 11 detects larger pressure signal, and pressure is less than user on the outside of sole
For pressure under normal attitude, the pressure signal that first pressure sensor 10 detects still very little.When user plane is lain prone towards ground
When on the ground or lying on one's side on the ground, 3 pressures of middle side are smaller on the outside of user's sole and after footwear, because of side 3 in after footwear outside
Side is bonded with ground, and second pressure sensor 12 detects larger pressure signal.Therefore, in the present embodiment, can be passed through
One pressure signal is less than the first predetermined threshold value, second pressure signal is more than the second predetermined threshold value or the 3rd pressure signal is more than the 3rd
Predetermined threshold value, it is above-mentioned state accurately to detect user.
To improve the accuracy judged, avoid causing erroneous judgement because user oneself stands up after tumble, detecting
User can just be judged as falling when the duration of above-mentioned state reaching default time threshold, wherein, default time threshold
Value is preferably 1 minute or other times.In the case where being judged as tumble, alarm signal is sent, can specifically be passed through
The mode for sending alarming short message is realized.Type sensing signal is single in the fall detection method, to the processing side of transducing signal
Method is simple, can effectively reduce the complexity of this method.
In implementing 1, to reduce energy consumption, in addition to step：In first pressure signal, second pressure signal and the 3rd pressure
In the case that signal is 0, first pressure sensor 10 is reduced, the pressure sensor 12 of second pressure sensor 11 and the 3rd is adopted
Collect frequency.
It should be understood that to reach the purpose of energy-conservation, can also be in first pressure signal, second pressure signal and the 3rd pressure
In the case that force signal is 0, only first pressure signal is gathered using first pressure sensor 10.It is not in first pressure signal
When 0, just first pressure sensor 10, the pressure sensor 12 of second pressure sensor 11 and the 3rd is controlled all to carry out transducing signal
Collection.
Referring to Fig. 1 and 3, wherein, Fig. 3 is the step S2 of the embodiment of the present invention 2 refinement schematic flow sheet, based on the present invention
Embodiment 1, step S2 specifically includes：
S21：First pressure signal, second pressure signal and the 3rd pressure signal are read by default reading frequency；Read
Frequency is taken to be less than or equal to the collection frequency of first pressure sensor 10, the pressure sensor 12 of second pressure sensor 11 and the 3rd
Rate；
S22：If the first pressure signal read, second pressure signal and the 3rd pressure signal meet holding for following condition
The continuous time reaches default time threshold：It is pre- more than second that first pressure signal is less than the first predetermined threshold value, second pressure signal
If threshold value or the 3rd pressure signal are more than the 3rd predetermined threshold value, then it is judged as falling.
In the present embodiment 2, to reduce energy consumption, the fall detection method, in addition to step：In first pressure signal,
In the case that two pressure signals and the 3rd pressure signal are 0, reading frequency is reduced.
It should be understood that to reach the purpose of energy-conservation, can also be in first pressure signal, second pressure signal and the 3rd pressure
In the case that force signal is 0, the first pressure signal of first pressure sensor collection is only read；It is not in first pressure signal
When 0, first pressure sensor 10, the transducing signal of the pressure sensor 12 of second pressure sensor 11 and the 3rd collection are read.
It is the predetermined threshold value of record first, the second predetermined threshold value and the 3rd predetermined threshold value of the embodiment of the present invention 3 referring to Fig. 4
The refinement schematic flow sheet of step.The fall detection method, before step S2, in addition to：
S11：When the first pressure signal collected reaches default human body weight scope first, will currently collect
One pressure signal, second pressure signal and the 3rd pressure signal are recorded as the first predetermined threshold value, the second predetermined threshold value and respectively
Three predetermined threshold values.
In embodiment 3, when the first pressure signal collected reaches default human body weight scope first, user is in
Erectility, it is respectively first pre- now to record the first pressure signal collected, second pressure signal and the 3rd pressure signal
If threshold value, the second predetermined threshold value and the 3rd predetermined threshold value, being used as user, its foot passes to each pressure under non-tumble state
The normal pressure value of sensor.
It is the structural representation of the falling detection device of the embodiment of the present invention 4 referring to Fig. 1 and 5.The falling detection device,
Including：
First pressure sensor 10, located on the inside of sole 2, for gathering first pressure signal；
Second pressure sensor 11, the middle inner side of side 3 after footwear, for gathering second pressure signal；
3rd pressure sensor 12, located at the inner side of counter 4, for gathering the 3rd pressure signal；
Central processing module 13, if for the first pressure signal, second pressure signal and the 3rd pressure signal that collect
Meet that the duration of following condition reaches default time threshold：First pressure signal is less than the first predetermined threshold value, the second pressure
Force signal is more than the second predetermined threshold value or the 3rd pressure signal is more than the 3rd predetermined threshold value, then is judged as falling；
Alarm module 14, for central processing module 13 be judged as fall in the case of send tumble alarm signal.
Multiple pressure sensors are located on the inside of shoe cavity by the falling detection device, to gather multiple positions pair of user foot
Pressure signal caused by shoe cavity, and judge whether user is in tumble state with the use of multiple pressure signals.Such as：Work as user
When facing sky and lying on the ground, if the outside of user's counter 4 contacts with ground, the 3rd pressure sensor 12 can detect
Larger pressure signal, and middle side 3 does not contact with ground on the outside of sole and after footwear, first pressure sensor 10 and second pressure pass
The pressure signal very little that sensor 11 detects, even 0；, can be to the middle production of side 3 after footwear if being bonded on the outside of the sole of user with ground
Raw larger extruding, then second pressure sensor 11 detects larger pressure signal, and the pressure being subject on the outside of sole is less than use
Family is pressure suffered under normal attitude, the pressure signal that first pressure sensor 10 detects still very little.Work as user plane
When lying prone on the ground or lie on one's side on the ground towards ground, 3 pressures of middle side are smaller on the outside of the sole of user and after footwear, after footwear
The middle outside of side 3 is bonded with ground, and second pressure sensor 11 detects larger pressure signal.Therefore, in the present embodiment, may be used
First predetermined threshold value is less than by first pressure signal, second pressure signal is more than the second predetermined threshold value or the 3rd pressure signal is big
In the 3rd predetermined threshold value, accurate detection user is above-mentioned state.
To improve the accuracy judged, avoid causing erroneous judgement because user oneself stands up after tumble, detecting
User is then judged as falling when the duration of above-mentioned state reaching default time threshold, wherein, default time threshold
Preferably 1 minute or other times.In the case where being judged as tumble, alarm module 14 sends alarm signal, tool
Body, the alarm modules 14 can be SMS platform.In the falling detection device, it can be achieved with using single pressure sensor
It is low to the accurate judgement of user's tumble state, its cost of implementation.
It is the structural representation of the falling detection device including frequency acquisition adjustment module of inventive embodiments 5 referring to Fig. 6
Figure.To reduce the energy consumption of the device, its endurance is lifted, the falling detection device also includes：Frequency acquisition adjustment module 20,
In the case of being 0 in first pressure signal, second pressure signal and the 3rd pressure signal, reduce the first pressure and pass
The frequency acquisition of sensor 10, the pressure sensor 12 of second pressure sensor 11 and the 3rd.
It should be understood that to reach the purpose of energy-conservation, can also be in first pressure signal, second pressure signal and the 3rd pressure
In the case that force signal is 0, only first pressure signal is gathered using first pressure sensor 10.It is not in first pressure signal
When 0, just first pressure sensor 10, the pressure sensor 12 of second pressure sensor 11 and the 3rd is controlled all to carry out transducing signal
Collection.
It is the falling detection device for including central processing module refinement functional module of the embodiment of the present invention 6 referring to Fig. 7
Structural representation.The central processing module 13 of the device specifically includes：
Reading unit 131, for reading first pressure signal, second pressure signal and the 3rd by default reading frequency
Pressure signal；Reading frequency is less than or equal to first pressure sensor 10, the pressure sensor of second pressure sensor 11 and the 3rd
12 frequency acquisition；
Judging unit 132, if meeting for the first pressure signal, second pressure signal and the 3rd pressure signal read
The duration of following condition reaches default time threshold：First pressure signal is less than the first predetermined threshold value, second pressure is believed
Number being more than the second predetermined threshold value or the 3rd pressure signal is more than the 3rd predetermined threshold value, then is judged as falling.
It is the structural representation for the falling detection device that the embodiment of the present invention 6 includes reading frequency adjustment unit referring to Fig. 8
Figure.Based on embodiment 6, to reduce the energy consumption of the device, its endurance is lifted, the central processing module 13 of the device also wraps
Include：Reading frequency adjustment unit 133, for first pressure signal, the second pressure signal and the 3rd read in reading unit
In the case that pressure signal is 0, reading frequency is reduced.
It should be understood that to reach the purpose of energy-conservation, can also be in first pressure signal, second pressure signal and the 3rd pressure
In the case that force signal is 0, the first pressure signal of first pressure sensor collection is only read；It is not in first pressure signal
When 0, first pressure sensor 10, the transducing signal of the pressure sensor 12 of second pressure sensor 11 and the 3rd collection are read.
It is the structural representation of the falling detection device including presetting module of the embodiment of the present invention 7 referring to Fig. 9.This falls
Detection means also includes：Presetting module 30, for reaching default human body weight model first when the first pressure signal collected
When enclosing, the first pressure signal currently collected, second pressure signal and the 3rd pressure signal are recorded as first respectively and preset
Threshold value, the second predetermined threshold value and the 3rd predetermined threshold value.
In embodiment 7, when the first pressure signal collected reaches default human body weight scope first, user is in
Erectility, it is respectively first pre- now to record the first pressure signal collected, second pressure signal and the 3rd pressure signal
If threshold value, the second predetermined threshold value and the 3rd predetermined threshold value, being used as user, its foot passes to each pressure under non-tumble state
The normal pressure value of sensor.
It is the structural representation for the falling detection device that the embodiment of the present invention 4 includes power supply referring to Figure 10.The tumble is examined
Surveying device also includes：Power module 40, for first pressure sensor 10, second pressure sensor 11, the 3rd pressure sensing
Device 12 and central processing module 13 are powered.
In summary, a kind of fall detection method provided by the invention and device pass through located at diverse location on the inside of shoe cavity
Pressure sensor gathers multiple pressure signals in real time, provides the data of abundance for the judgement of tumble state, can improve detection
Accuracy；The foot of human body fitting situation different from ground when being in tumble state according to human body, meeting what is collected
First pressure signal, second pressure signal and the 3rd pressure signal meet that first pressure signal is less than the first predetermined threshold value, second
When pressure signal reaches default more than the second predetermined threshold value or the 3rd pressure signal more than the duration of the 3rd predetermined threshold value
Between threshold value condition judgment to fall, just send alarm signal in the case where being judged as falling, the detection method is accurate, letter
It is single, can effectively avoid that erroneous judgement of falling occurs；Pertain only to handle single pressure sensor signal in this process simultaneously, signal
Processing procedure is simple；In addition, because sensor type used in the device is single, cost is relatively low, additionally it is possible to reduce device
Cost.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of fall detection method, it is characterised in that comprise the following steps：
S1：By the first pressure sensor on the inside of sole, the second pressure sensor after footwear on the inside of middle side and
Collection first pressure signal, second pressure signal and the 3rd press the 3rd pressure sensor on the inside of counter in real time respectively
Force signal；
S2：If the first pressure signal collected is less than the first predetermined threshold value and the duration reaches default time threshold
Value, second pressure signal are more than the second predetermined threshold value and the duration reaches default time threshold or the 3rd pressure signal is more than
3rd predetermined threshold value and duration reach default time threshold, then are judged as falling；
S3：Tumble alarm signal is sent in the case where being judged as falling.
2. fall detection method according to claim 1, it is characterised in that also including step：
In the case where the first pressure signal, second pressure signal and the 3rd pressure signal are 0, first pressure is reduced
The frequency acquisition of force snesor, second pressure sensor and the 3rd pressure sensor.
3. fall detection method according to claim 1, it is characterised in that the step S2 is specifically included：
First pressure signal, second pressure signal and the 3rd pressure signal are read by default reading frequency；The reading
Frequency is taken to be less than or equal to the frequency acquisition of first pressure sensor, second pressure sensor and the 3rd pressure sensor；
If the first pressure signal read is less than the first predetermined threshold value and duration and reaches default time threshold, the
Two pressure signals are more than the second predetermined threshold value and the duration reaches default time threshold or the 3rd pressure signal is more than the 3rd
Predetermined threshold value and duration reach default time threshold, then are judged as falling.
4. fall detection method according to claim 3, it is characterised in that also including step：
In the case where the first pressure signal, second pressure signal and the 3rd pressure signal are 0, described read frequently is reduced
Rate.
5. fall detection method according to claim 1, it is characterised in that before step S2, in addition to：
When the first pressure signal collected reaches default human body weight scope first, will currently collect described
One pressure signal, second pressure signal and the 3rd pressure signal are recorded as the first predetermined threshold value, the second predetermined threshold value and respectively
Three predetermined threshold values.
A kind of 6. falling detection device, it is characterised in that including：
First pressure sensor, on the inside of sole, for gathering first pressure signal；
Second pressure sensor, after footwear on the inside of middle side, for gathering second pressure signal；
3rd pressure sensor, on the inside of counter, for gathering the 3rd pressure signal；
Central processing module, if reaching for the first pressure signal collected less than the first predetermined threshold value and duration
Default time threshold, second pressure signal are more than the second predetermined threshold value and the duration reaches default time threshold or the 3rd
Pressure signal is more than the 3rd predetermined threshold value and the duration reaches default time threshold, then is judged as falling；
Alarm module, for central processing module judges for fall in the case of send tumble alarm signal.
7. falling detection device according to claim 6, it is characterised in that the falling detection device also includes：
Frequency acquisition adjustment module, for being 0 in the first pressure signal, second pressure signal and the 3rd pressure signal
In the case of, reduce the frequency acquisition of the first pressure sensor, second pressure sensor and the 3rd pressure sensor.
8. falling detection device according to claim 6, it is characterised in that the central processing module includes：
Reading unit, for reading the first pressure signal, second pressure signal and the 3rd pressure by default reading frequency
Force signal；The reading frequency is less than or equal to first pressure sensor, second pressure sensor and the 3rd pressure sensor
Frequency acquisition；
Judging unit, if reaching default less than the first predetermined threshold value and duration for the first pressure signal read
Time threshold, second pressure signal is more than the second predetermined threshold value and duration and reaches default time threshold or the 3rd pressure
Signal is more than the 3rd predetermined threshold value and the duration reaches default time threshold, then is judged as falling.
9. falling detection device according to claim 8, it is characterised in that the central processing module also includes：
Reading frequency adjustment unit, for first pressure signal, the second pressure signal and read in the reading unit
In the case that three pressure signals are 0, the reading frequency is reduced.
10. falling detection device according to claim 6, it is characterised in that the falling detection device also includes：
Presetting module, it is current for when the first pressure signal collected reaches default human body weight scope first, inciting somebody to action
The first pressure signal, second pressure signal and the 3rd pressure signal collected is recorded as the first predetermined threshold value, respectively
Two predetermined threshold values and the 3rd predetermined threshold value.
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