CN103914948B - Based on old man care system and the method thereof of intelligent mobile terminal - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 64
- 230000036541 health Effects 0.000 claims abstract description 46
- 230000001133 acceleration Effects 0.000 claims abstract description 32
- 230000005484 gravity Effects 0.000 claims abstract description 13
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Abstract
The invention discloses a kind of old man care system based on intelligent mobile terminal and method thereof, system is made up of the gravity sensor be arranged on intelligent mobile terminal, acceleration transducer, camera, receiver, global position system GPS, health analysis module, safety analysis module, communication module, loudspeaker.Method is: information gravity sensor, acceleration transducer, camera, receiver gathered, be input to respectively in health analysis module and safety analysis module, realize rhythm of the heart, amount of exercise statistics, urgent SOS calling, Indoor Video, the prompting of appliance door window safe, the management of kitchen event notification, health account, trip whereabouts are monitored, intelligent navigation goes home ten functions.The present invention can make old man's each side in daily life obtain omnibearing nurse.
Description
Technical field
The invention belongs to communication technical field, further relate to a kind of old man care system based on intelligent mobile terminal in technical field of image processing and method thereof.The present invention can realize the multiple function such as going home to the rhythm of the heart of old man, amount of exercise statistics, trip monitoring, intelligent navigation according to image processing algorithm, thus makes old man's each side in daily life obtain omnibearing nurse.
Background technology
Along with aging population constantly aggravates, the problem such as safe, healthy of the elderly becomes the focus that we pay close attention to thereupon, and the nurse problem of the elderly becomes in order to a social concern.At present, some manufacturers have released various old man's monitor system towards family expenses, but some facilities and equipment use cost is high, usable range is little, portable degree is lower, and need a large amount of external device.Some portable devices, but function singleness, have obvious weak point, brings great inconvenience thus to user in experience.
The patented claim " old man nurses pulse watch " (application number 2013102562371 application publication number CN103431852A) that Ding Baozhong proposes discloses a kind of old man and nurses pulse watch.This wrist-watch comprises pulse collection device, the master control set be connected with described pulse collection device and the watch displays panel be connected with master control set, its concrete function is: master control set comprises locating device, device for signalling and for controlling locating device, the primary processor of device for signalling, master control set is connected with described pulse collection device, device for signalling comprises data-signal conveyer and note device for signalling, the pulse information that pulse collection device collects is sent to data sink by Internet of Things server by data-signal conveyer, note device for signalling directly communicates with data sink.The pulse information of old man or positional information being sent to Internet of Things server has Internet of Things server to be forwarded on children or tutorial smart mobile phone again.Solve the nurse problem of old man.The deficiency that this patented claim exists is: first, function singleness, just achieves the monitoring of old man position and pulse information; Secondly, functional realiey is complicated, needs multiple device to realize.
The patented claim " old man care system based on RFID technique " (application number 201120283812.3 application publication number CN202145316U) that University Of Suzhou proposes discloses a kind of old man care system based on RFID technique, its implementation is: comprise a plurality of Wrist belt-type patient monitor with RFID label tag, be installed in room, the a plurality of reader coordinated with RFID label tag in Wrist belt-type patient monitor and be arranged at and nurse the server in standing, Wrist belt-type patient monitor described in each is made up of wrist strap and the controller be arranged on wrist strap, sensor group and RFID label tag is provided with in controller, the output terminal of sensor group is connected with RFID label tag, reader receives the data that corresponding RFID label tag sends, and be connected with described server through wireless network.By coordinating of RFID wireless radio-frequency and sensor group, Real-time Collection is nursed the condition information of old man, utilizes RFID to be wirelessly transmitted on the server at nurse station, realizes, to old man's nurse, ensureing that the elderly's is healthy.The deficiency that this patented claim exists is: first, need peripheral hardware, a large amount of RFID label tag and sensor device; Secondly, cost is high, because needs a large amount of peripheral hardware whole system cost is very high.
Summary of the invention
The object of the invention is for above-mentioned the deficiencies in the prior art, propose a kind of supervisory system based on intelligent mobile terminal and method thereof.
The thinking realizing the object of the invention is, the nurse of old man is mainly set about from healthy and life security two aspect, by being arranged at the gravity sensor on intelligent mobile terminal, acceleration transducer, camera, global position system GPS, receiver obtains movable information and the voice messaging of old man, then these information are processed by the different units in health analysis module and safety analysis module, realize rhythm of the heart, amount of exercise is added up, urgent SOS calling, Indoor Video, appliance door window safe is reminded, kitchen event notification, health account manages, the monitoring of trip whereabouts, intelligent navigation is gone home ten functions, thus accomplish the omnibearing nurse of old man.
System of the present invention, comprises the gravity sensor be arranged on mobile terminal, acceleration transducer, camera, receiver, global position system GPS, health analysis module, safety analysis module, communication module, loudspeaker, wherein.
Gravity sensor, acceleration transducer, for obtaining the component of acceleration of three-dimensional when old man moves.
Camera, points RGB RGB image, old man's current indoor scene image for obtaining old man.
Receiver, for obtaining " emergency " and " help " voice messaging that old man sends.
Global position system GPS, for obtaining the latitude and longitude coordinates of old man's current location.
Health analysis module, judges aged health state for the information gathered in conjunction with gravity sensor, acceleration transducer.
Safety analysis module, the information for gathering camera, receiver, global position system GPS judges the safety case of old man.
Communication module, for the people by the setting in advance of the judged result of health analysis module, safety analysis module notice.
Loudspeaker, for reporting the judged result of safety analysis module.
Method of the present invention, comprises step as follows:
(1) Information Monitoring:
By being arranged at gravity sensor, acceleration transducer, camera, receiver, the global position system GPS on intelligent mobile terminal, gather by the motion of nurse old man, voice messaging;
(2) Security Information Analysis:
(2a) the old man's current location latitude and longitude coordinates information gathered by global position system GPS is as centre coordinate, senile hip fracture address is as center and senile hip fracture radius, be input to the appliance door window safe reminding unit in safety analysis module, utilization departs from center position computing method, obtain the current distance departing from center of old man, this distance is deducted senile hip fracture radius, obtains the deviation value in old man's distance residence;
(2b) the old man's current location latitude and longitude coordinates information gathered by global position system GPS is as centre coordinate, to be everlasting zone of action radius as center and old man in senile hip fracture address, be input to intelligent navigation in safety analysis module to go home unit, utilization departs from center position computing method, obtain the current distance departing from center of old man, this distance is deducted old man frequent zone of action radius, obtain the deviation value of old man's distance home;
(2c) when the trip monitoring button that old man clicks, old man's current location latitude and longitude coordinates information that global position system GPS gathers, and be entered into the trip monitoring unit in safety analysis module, intelligent terminal shows the trip track of old man;
(2d) time that old man is arranged is input to the kitchen event notification unit in safety analysis module, and by set time controling, kitchen event notification unit carries out countdown operation;
(2e) the Indoor Video unit in safety analysis module, be often separated by 5 minutes by camera shooting old man current indoor scene image once, and take image subtraction with the last time, according to the following formula, calculate the grey scale change value of subtracting each other in gained image:
ΔT
m＝T
n-T
n-1
Wherein, Δ T
mrepresent grey scale change value, T
nrepresent that current time subtracts each other the gray-scale value of all pixels in gained image, T
n-1represented that a upper moment subtracted each other the gray-scale value of all pixels in gained image, n represents shooting image number of times, and value is 1,2,3,4, the m change frequencies representing grey scale change value, and value is 1,2,3;
(2f) 3 the grey scale change value Δ T obtained after continuous 4 times being done difference
1, Δ T
2, Δ T
3, do difference with threshold value respectively, difference is designated as X, Y, Z, and when X, Y, Z are all less than 0, calling communication module sends note to the people of setting in advance;
(3) health and fitness information analysis:
(3a) the step distance information of old man being tested oneself, walking accekeration are input to the amount of exercise statistic unit in health analysis module, according to the following formula, calculate acceleration change value when old man moves:
S＝|V
t-V
t-1|
Wherein, acceleration change value when S represents that old man moves, V
trepresent the average acceleration value of three-dimensional when current time old man moves, V
t-1represent the average acceleration value of upper three-dimensional when a moment, old man moved, || represent the operation that takes absolute value;
(3b), when the acceleration change value S when old man moves is greater than the walking accekeration of testing oneself, the step-length number of corresponding old man's walking, is multiplied step-length number with the step distance of input and obtains old man's amount of exercise;
(3c) the rhythm of the heart unit in health analysis module, statistics camera collection to old man point the number of all pixels of RGB RGB image, adding up R component in all pixels higher than the number of pixel R component mean value all in image is divided by with sum, obtains density; Calculate the crest in 10 seconds, once will fluctuate and be designated as a heartbeat, beats, divided by the time, obtains the heart rate of old man;
(3d) old man's common drug information is input to the medicine house keeper unit in health analysis module, sets up index information;
(3e) the statistics autostore of the heart rate information in step (3b) and (3c) and movable information gets up by health control unit in health analysis module automatically;
(4) alarm:
(4a) the rhythm of the heart unit in health analysis module, amount of exercise statistic unit record by old man heart rate information, amount of exercise information and healthy old men conventional value compare, and judge aged health state; And check heart rate information in the past and amount of exercise information by the health account administrative unit in health analysis module;
(4b) the voice help-asking unit in safety analysis module puts through the phone of the people of setting in advance; Indoor Video unit, intelligent navigation are gone home unit, and calling communication module sends note respectively to the people of setting in advance; Appliance door window safe reminding unit triggers loudspeaker alarm, reminds it to close electrical equipment door and window; Kitchen event notification unit, timing terminates, and triggers loudspeaker alarm prompt.
The present invention compared with prior art has the following advantages:
First, the present invention is by being arranged at gravity sensor, camera, acceleration transducer, global position system GPS, the receiver on intelligent mobile terminal, overcome the shortcoming that the portable degree of other nursing systems in prior art is lower, need a large amount of external device, make the present invention have portable degree well, cost is low, without the need to the feature of peripheral hardware.
Second, present system comprises health analysis and the large module of safety analysis two, multiple functions such as can realizing the rhythm of the heart to old man, amount of exercise is added up, trip is monitored, intelligent navigation is gone home, overcome the deficiency of other nursing system function singlenesses in prior art, make the present invention have multiple functional feature.
3rd, the present invention adopts image processing techniques, speech recognition technology, overcomes the shortcoming of other nursing system functional realiey complexity in prior art, makes the present invention have feature simple to operate.
Accompanying drawing explanation
Fig. 1 is the module map of present system;
Fig. 2 is the process flow diagram of the inventive method.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
With reference to Fig. 1, system of the present invention, comprises the gravity sensor be arranged on mobile terminal, acceleration transducer, camera, receiver, global position system GPS, health analysis module, safety analysis module, communication module, loudspeaker, wherein.
Gravity sensor, acceleration transducer, for obtaining the component of acceleration of three-dimensional when old man moves.
Camera, points RGB RGB image, old man's current indoor scene image for obtaining old man.
Receiver, for obtaining " emergency " and " help " voice messaging that old man sends.
Global position system GPS, for obtaining the latitude and longitude coordinates of old man's current location.
Health analysis module, judges aged health state for the information gathered in conjunction with gravity sensor, acceleration transducer, comprises rhythm of the heart unit, amount of exercise statistic unit, medicine house keeper unit, health account administrative unit; Wherein, described rhythm of the heart unit is for monitoring the heart rate information of old man, described amount of exercise statistic unit is for adding up the amount of exercise information of old man, described medicine house keeper is for storing old man's common drug information, and described health account administrative unit is for the heart rate information that stores old man and measured and amount of exercise information in the past.
Safety analysis module, information for gathering camera, receiver, global position system GPS judges the safety case of old man, comprises Indoor Video unit, kitchen event notification unit, intelligent navigation go home unit, go on a journey monitoring unit, voice help-asking unit, appliance door window safe reminding unit; Wherein, described Indoor Video unit be used for old man long-time static time, photos and sending messages gives the people of in advance setting, and described kitchen event notification unit is used for old man at kitchen work time reminding.Intelligent navigation unit of going home is opened positioning system navigation when being everlasting behaviour area for leaving old man it is self-servicely gone home.Trip monitoring unit is used for old man and leaves and record its positional information when being everlasting zone of action and issue the people specified in advance.Voice help-asking unit is used for the phone of the people being put through setting in advance when old man runs into emergency situations by voice.Appliance door window safe is reminded and is used for reminding it to close electrical equipment door and window when old man leaves residence.
Communication module, for the people by the setting in advance of the judged result of health analysis module, safety analysis module notice.
Loudspeaker, for reporting the judged result of safety analysis module.
With reference to Fig. 2, the concrete steps of method of the present invention are described below.
Step 1, Information Monitoring.
By being arranged at gravity sensor, acceleration transducer, camera, receiver, the global position system GPS on intelligent mobile terminal, gather by the motion of nurse old man, voice messaging.
Comprised by the movable information of nurse old man described in step 1, when old man moves, the component of acceleration information of three-dimensional, old man's step distance information, old man point RGB RGB image information, old man's common drug information.The described voice messaging by nurse old man comprises, " emergency " and " help " voice messaging that old man sends, the latitude and longitude coordinates information of old man's current location, old man's current indoor scene image information, old man frequent zone of action radius information, old man residence latitude and longitude coordinates and area information.
Step 2, Security Information Analysis.
The old man's current location latitude and longitude coordinates information gathered by global position system GPS is as centre coordinate, senile hip fracture address is as center and senile hip fracture radius, be input to the appliance door window safe reminding unit in safety analysis module, utilization departs from center position computing method, obtain the current distance departing from center of old man, this distance is deducted senile hip fracture radius, obtains the deviation value in old man's distance residence.
The old man's current location latitude and longitude coordinates information gathered by global position system GPS is as centre coordinate; to be everlasting zone of action radius as center and old man in senile hip fracture address; be input to intelligent navigation in safety analysis module to go home unit; utilization departs from center position computing method; obtain the current distance departing from center of old man; this distance is deducted old man frequent zone of action radius, obtain the deviation value of old man's distance home.
The described computing method departing from center position are as follows:
The first step, according to the following formula, calculates the arc length in old man's current position coordinates and the center position coordinates circle of longitude:
L＝|X
1-X
2|*π*R*cos(Y
1)/180
Wherein, L represents arc length in old man's current position coordinates and the center position coordinates circle of longitude, X
1represent center longitude coordinate, X
2represent old man's current location longitude coordinate, π represents circular constant, and R represents earth radius, and cos represents that cosine operates, Y
1represent center latitude coordinate, || represent the operation that takes absolute value;
Second step, according to the following formula, calculates the arc length in old man's current position coordinates and center position coordinates latitude circle:
S＝|Y
1-Y
2|*π*R/180
Wherein, S represents the arc length in old man's current position coordinates and center position coordinates latitude circle, Y
1represent center latitude coordinate, Y
2represent old man's current location latitude coordinate;
3rd step, according to the following formula, calculates current old man and departs from center position:
Wherein, D represents the distance of old man's current position coordinates and center position coordinates, and corresponding old man departs from center position.
When the trip monitoring button that old man clicks, old man's current location latitude and longitude coordinates information that global position system GPS gathers, and be entered into the trip monitoring unit in safety analysis module, intelligent terminal shows the trip track of old man.
The time that old man is arranged is input to the kitchen event notification unit in safety analysis module, and by set time controling, kitchen event notification unit carries out countdown operation.
Indoor Video unit in safety analysis module, be often separated by 5 minutes by camera shooting old man current indoor scene image once, and take image subtraction with the last time, according to the following formula, calculate the grey scale change value of subtracting each other in gained image:
ΔT
m＝T
n-T
n-1
Wherein, Δ T
mrepresent grey scale change value, T
nrepresent that current time subtracts each other the gray-scale value of all pixels in gained image, T
n-1represented that a upper moment subtracted each other the gray-scale value of all pixels in gained image, n represents shooting image number of times, and value is 1,2,3,4, the m change frequencies representing grey scale change value, and value is 1,2,3.
3 the grey scale change value Δ T obtained after continuous 4 times being done difference
1, Δ T
2, Δ T
3, do difference with threshold value respectively, difference is designated as X, Y, Z, and when X, Y, Z are all less than 0, calling communication module sends note to the people of setting in advance.
Threshold value be according to gray-scale values all in white image and, consider error component, its span is [10,50];
Step 3, health and fitness information analysis.
The step distance information of old man being tested oneself, walking accekeration are input to the amount of exercise statistic unit in health analysis module, according to the following formula, calculate acceleration change value when old man moves:
S＝|V
t-V
t-1|
Wherein, acceleration change value when S represents that old man moves, V
trepresent the average acceleration value of three-dimensional when current time old man moves, V
t-1represent the average acceleration value of upper three-dimensional when a moment, old man moved, || represent the operation that takes absolute value.
When acceleration change value S when old man moves is greater than the walking accekeration of testing oneself, the step-length number of corresponding old man's walking, is multiplied step-length number with the step distance of input and obtains old man's amount of exercise.
Rhythm of the heart unit in health analysis module, statistics camera collection to old man point the number of all pixels of RGB RGB image, adding up R component in all pixels higher than the number of pixel R component mean value all in image is divided by with sum, obtains density; Calculate the crest in 10 seconds, once will fluctuate and be designated as a heartbeat, beats, divided by the time, obtains the heart rate of old man.
Old man's common drug information is input to the medicine house keeper unit in health analysis module, sets up index information.
The statistics autostore of the heart rate information in step (3b) and (3c) and movable information gets up by health control unit in health analysis module automatically.
Step 4, alarm.
The heart rate information that rhythm of the heart unit in health analysis module, amount of exercise statistic unit record by old man, amount of exercise information and healthy old men conventional value compare, and judge aged health state; And check heart rate information in the past and amount of exercise information by the health account administrative unit in health analysis module.
Voice help-asking unit in safety analysis module puts through the phone of the people of setting in advance; Indoor Video unit, intelligent navigation are gone home unit, and calling communication module sends note respectively to the people of setting in advance; Appliance door window safe reminding unit triggers loudspeaker alarm, reminds it to close electrical equipment door and window; Kitchen event notification unit, timing terminates, and triggers loudspeaker alarm prompt.
Claims (5)
1. the old man based on intelligent mobile terminal sees a maintaining method, and adopt intelligent mobile terminal to realize, concrete steps comprise as follows:
(1) Information Monitoring:
By being arranged at gravity sensor (1), acceleration transducer (2), camera (3), receiver (4), the global position system GPS (5) on intelligent mobile terminal, gather by the motion of nurse old man and voice messaging;
(2) Security Information Analysis:
(2a) the old man's current location latitude and longitude coordinates information gathered by global position system GPS (5) is as centre coordinate, senile hip fracture address is as center and senile hip fracture radius, be input to the appliance door window safe reminding unit in the safety analysis module (7) be arranged on intelligent mobile terminal, utilization departs from center position computing method, obtain the current distance departing from center of old man, this distance is deducted senile hip fracture radius, obtains the deviation value in old man's distance residence;
(2b) the old man's current location latitude and longitude coordinates information gathered by global position system GPS (5) is as centre coordinate, to be everlasting zone of action radius as center and old man in senile hip fracture address, be input to intelligent navigation in safety analysis module (7) to go home unit, utilization departs from center position computing method, obtain the current distance departing from center of old man, this distance is deducted old man frequent zone of action radius, obtain the deviation value of old man's distance home;
(2c) when old man clicks trip monitoring button, global position system GPS (5) gathers old man's current location latitude and longitude coordinates information, and the trip monitoring unit be entered in safety analysis module (7), intelligent terminal shows the trip track of old man;
(2d) time that old man is arranged is input to the kitchen event notification unit in safety analysis module (7), and by set time controling, kitchen event notification unit carries out countdown operation;
(2e) the Indoor Video unit in safety analysis module (7), often be separated by 5 minutes by camera (3) shooting old man current indoor scene image once, and take image subtraction with the last time, according to the following formula, calculate the grey scale change value of subtracting each other in gained image:
ΔT
m＝T
n-T
n-1
Wherein, Δ T
mrepresent grey scale change value, T
nrepresent that current time subtracts each other the gray-scale value of all pixels in gained image, T
n-1represented that a upper moment subtracted each other the gray-scale value of all pixels in gained image, n represents shooting image number of times, and value is 1,2,3,4, the m change frequencies representing grey scale change value, and value is 1,2,3;
(2f) 3 the grey scale change value Δ T obtained after continuous 4 times being done difference
1, Δ T
2, Δ T
3, do difference with threshold value respectively, difference is designated as X, Y, Z, when X, Y, Z are all less than 0, call the communication module (8) be arranged on intelligent mobile terminal and sends note to the people of setting in advance;
(3) health and fitness information analysis:
(3a) the step distance information of old man being tested oneself, walking accekeration are input to the amount of exercise statistic unit in the health analysis module (6) be arranged on intelligent mobile terminal, according to the following formula, calculate acceleration change value when old man moves:
S＝|V
t-V
t-1|
Wherein, acceleration change value when S represents that old man moves, V
trepresent the average acceleration value of three-dimensional when current time old man moves, V
t-1represent the average acceleration value of upper three-dimensional when a moment, old man moved, || represent the operation that takes absolute value;
(3b), when the acceleration change value S when old man moves is greater than the walking accekeration of testing oneself, the step-length number of corresponding old man's walking, is multiplied step-length number with the step distance of input and obtains old man's amount of exercise;
(3c) the rhythm of the heart unit in health analysis module (6), the old man that statistics camera (3) collects points the number of all pixels of RGB RGB image, adding up R component in all pixels higher than the number of pixel R component mean value all in image is divided by with sum, obtains density; Calculate the crest in 10 seconds, once will fluctuate and be designated as a heartbeat, beats, divided by the time, obtains the heart rate of old man;
(3d) old man's common drug information is input to the medicine house keeper unit in health analysis module (6), sets up index information;
(3e) the statistics autostore of the heart rate information in step (3b) and step (3c) and movable information gets up by health control unit in health analysis module (6) automatically;
(4) alarm:
(4a) the rhythm of the heart unit in health analysis module (6), amount of exercise statistic unit record by old man heart rate information, amount of exercise information and healthy old men conventional value compare, and judge aged health state; And check heart rate information in the past and amount of exercise information by the health account administrative unit in health analysis module (6);
(4b) the voice help-asking unit in safety analysis module (7) puts through the phone of the people of setting in advance; Indoor Video unit, intelligent navigation are gone home unit, and calling communication module (8) sends note respectively to the people of setting in advance; Appliance door window safe reminding unit triggers loudspeaker (9) alarm be arranged on intelligent mobile terminal, reminds it to close electrical equipment door and window; Kitchen event notification unit, timing terminates, and triggers loudspeaker (9) alarm prompt.
2. a kind of old man based on intelligent mobile terminal according to claim 1 sees maintaining method, it is characterized in that, comprised by the movable information of nurse old man described in step (1), when old man moves, the component of acceleration information of three-dimensional, old man's step distance information, old man point RGB RGB image information and old man's common drug information.
3. a kind of old man based on intelligent mobile terminal according to claim 1 sees maintaining method; it is characterized in that; comprised by the voice messaging of nurse old man described in step (1), " emergency " and " help " voice messaging that old man sends, the latitude and longitude coordinates information of old man's current location, old man's current indoor scene image information, old man's frequent zone of action radius information and old man residence latitude and longitude coordinates and area information.
4. a kind of old man based on intelligent mobile terminal according to claim 1 sees maintaining method, it is characterized in that, the computing method departing from the distance of center described in step (2a), step (2b) are as follows:
The first step, according to the following formula, calculates the arc length in old man's current position coordinates and the center position coordinates circle of longitude:
L＝|X
1-X
2|*π*R*cos(Y
1)/180
Wherein, L represents arc length in old man's current position coordinates and the center position coordinates circle of longitude, X
1represent center longitude coordinate, X
2represent old man's current location longitude coordinate, π represents circular constant, and R represents earth radius, and cos represents that cosine operates, Y
1represent center latitude coordinate, || represent the operation that takes absolute value,
*represent multiplication operations;
Second step, according to the following formula, calculates the arc length in old man's current position coordinates and center position coordinates latitude circle:
S＝|Y
1-Y
2|*π*R/180
Wherein, S represents the arc length in old man's current position coordinates and center position coordinates latitude circle, Y
1represent center latitude coordinate, Y
2represent old man's current location latitude coordinate;
3rd step, according to the following formula, calculates current old man and departs from center position:
Wherein, D represents the distance of old man's current position coordinates and center position coordinates, and corresponding old man departs from center position.
5. a kind of old man based on intelligent mobile terminal according to claim 1 sees maintaining method, it is characterized in that, threshold value span described in step (2f) is [10,50].
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| US9572503B2 (en) * | 2014-11-14 | 2017-02-21 | Eric DeForest | Personal safety and security mobile application responsive to changes in heart rate |
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