CN102393992A - Alarm terminal capable of automatically detecting tumble of human body - Google Patents
Alarm terminal capable of automatically detecting tumble of human body Download PDFInfo
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- CN102393992A CN102393992A CN2011100625911A CN201110062591A CN102393992A CN 102393992 A CN102393992 A CN 102393992A CN 2011100625911 A CN2011100625911 A CN 2011100625911A CN 201110062591 A CN201110062591 A CN 201110062591A CN 102393992 A CN102393992 A CN 102393992A
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Abstract
The invention discloses an alarm terminal capable of automatically detecting tumble of a human body. The terminal comprises a controller and a tri-axial acceleration transducer, wherein the tri-axial acceleration transducer is connected to the controller through an I2C bus; when rising edge levels are generated in turn by INT1 and INT2 pins of the tri-axial acceleration transducer and the tri-axial acceleration transducer is subjected to FREEFALL interruption, ACTIVE interruption and INACTIVE interruption in turn within a preset time, a tri-axial acceleration value of the tri-axial acceleration transducer is acquired and a square of an acceleration value vector sum is calculated by the controller; and when a difference between the square of the acceleration value vector sum and the square of an initial acceleration value vector sum is more than a preset value or the rising edge levels are continuously and repeatedly generated by the INT1 pin of the tri-axial acceleration transducer, the controller is connected to a network node and is used for sending alarm information carrying power value information of a network access point. The alarm terminal capable of automatically detecting tumble of the human body provided by the invention can be used for accurately judging if the human body tumbles and alarming when the human body tumbles.
Description
Technical field
The present invention relates to breaker technical field, more particularly, relate to the automatic detection alarm of a kind of falling over of human body terminal.
Background technology
According to world's disease control and prevention tissue statistics, surpass 65 years old old man in the world, have three an every year/fall down for a moment, and in disposable falling down, nearly 10% can cause grievous injury or disease.And the shared population ratio of the old man of Chinese society more than 60 years old has surpassed 10% at present, really becomes aging population country; In the face of huge elderly population quantity like this, reduce the impact that brings to health when the elderly falls down and effectively to alleviate the injury that the accident of falling down is brought; And for the old man who has fallen down, the length of relief stand-by period has directly determined ill degree.
Therefore, arise at the historic moment in the automatic detection alarm of a kind of falling over of human body terminal, when detecting the people and fall down, can send alerting signal, so that the paramedic in time learns and take treatment work.Application number is to disclose a kind of people autoalarm of falling in 200720125141.1 the application documents; It has adopted a 3-axis acceleration sensor to come human body acceleration and pitch angle; When body inclination surpasses 40 degree angles, report to the police, perhaps when acceleration is greater than 1.5g, report to the police, though this method recall rate is high; But False Rate is also higher, can't fall down and run jumping, bend over etc. be moved and distinguish.
Summary of the invention
Whether in view of this, the present invention provides the automatic detection alarm of a kind of falling over of human body terminal, fall down to judge human body accurately, and report to the police when falling down when judging.
For realizing above-mentioned purpose, the existing scheme that proposes is following:
The automatic detection alarm of a kind of falling over of human body terminal comprises: controller and the 3-axis acceleration sensor that links to each other through the I2C bus with this controller, wherein:
When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said controller obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps; When said 3-axis acceleration sensor INT1 pin continues repeatedly to produce the rising edge level, said controller access network nodes, and send the warning message that carries Network Access Point performance number information.
Preferably, also comprise: the input block that links to each other with said controller, when this input block is triggered, said controller access network nodes, and send the warning message that carries Network Access Point performance number information.
Preferably, also comprise alarm unit, be used for when said controller access network nodes also sends the warning message that carries Network Access Point performance number information, reporting to the police.
Preferably, when said 3-axis acceleration sensor INT1 pin produced the rising edge level, said controller was waken up.
Preferably; When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; Judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said controller obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square; And when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value, if said INACTIVAE interrupts continuing Preset Time, the warning message of said controller transmission is serious warning message.
Preferably, said controller comprises single-chip microcomputer and the transceiver that links to each other with said single-chip microcomputer; Wherein:
When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said single-chip microcomputer obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps; When said 3-axis acceleration sensor INT1 pin continued repeatedly to produce the rising edge level, the said transceiver access network nodes of said Single-chip Controlling, transmission carried the warning message of Network Access Point performance number information.
Preferably, said transceiver is the ZigBee transceiver.
Preferably, also comprise timer in the said single-chip microcomputer, when this timer then after, the said transceiver access network nodes of said Single-chip Controlling, send the warning message carry Network Access Point performance number information.
Preferably, said controller is for gathering the single-chip microcomputer that transmission-receiving function is arranged, and this single-chip microcomputer comprises control module and Transmit-Receive Unit, wherein:
When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said control module obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps; When said 3-axis acceleration sensor INT1 pin continued repeatedly to produce the rising edge level, said control module was controlled said Transmit-Receive Unit access network nodes, is sent the warning message that carries Network Access Point performance number information.
Preferably, also comprise timer in the said single-chip microcomputer, when this timer then after, said control module is controlled said Transmit-Receive Unit access network nodes, is sent the warning message carry Network Access Point performance number information.
Can find out from above-mentioned technical scheme; In the automatic detection alarm of the falling over of human body disclosed by the invention terminal; INT1 and INT2 pin order generation rising edge level when 3-axis acceleration sensor; Judge that the FREEFALL interruption takes place this 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; And controller judge three of the 3-axis acceleration sensors obtain the accekeration vector and square with initial acceleration value vector and square difference during greater than preset value, explain that the people who wears the automatic detection alarm of falling over of human body terminal has fallen down; Perhaps; When the INT1 of 3-axis acceleration sensor pin continues repeatedly to produce the rising edge level; Explain that the people who wears the automatic detection alarm of falling over of human body terminal falls from high altitude, at this moment, the controller access network nodes; And send the warning message that carries Network Access Point performance number information, provide the wearer at the automatic detection alarm of staff's falling over of human body terminal to meet accident.
And the race of human body is beated when doing, and 3-axis acceleration sensor INACTIVE generally can not take place interrupts, interrupt even INACTIVE takes place, 3-axis acceleration value vector and square with initial acceleration value vector and square difference also can be less than preset value; When human body bent over to move, the ACTIVE interruption can not take place in 3-axis acceleration sensor and INACTIVE interrupts; Therefore; The testing process that the automatic detection alarm of falling over of human body of the present invention terminal is described only to the weightlessness of falling down process, with collision on the ground, collision static a series of actions in back; All can not be judged as for the everything that does not satisfy this process and to fall down, reduce False Rate.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation at the automatic detection alarm of the disclosed a kind of falling over of human body of embodiment of the invention terminal;
Fig. 2 is the structural representation at the automatic detection alarm of the disclosed a kind of falling over of human body of another embodiment of the present invention terminal;
Fig. 3 is the structural representation at the automatic detection alarm of the disclosed a kind of falling over of human body of another embodiment of the present invention terminal;
Fig. 4 is the structural representation at the automatic detection alarm of the disclosed a kind of falling over of human body of another embodiment of the present invention terminal;
Fig. 5 is the structural representation at the automatic detection alarm of the disclosed a kind of falling over of human body of another embodiment of the present invention terminal.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention discloses the automatic detection alarm of a kind of falling over of human body terminal, whether fall down, and report to the police when falling down when judging to judge human body accurately.
For easy to use, Wrist belt-type is made at the automatic detection alarm of the disclosed falling over of human body of present embodiment terminal, directly is worn on user's the wrist to get final product.
The automatic detection alarm of the disclosed falling over of human body of present embodiment terminal, as shown in Figure 1, comprising: controller 101 and the 3-axis acceleration sensor 102 that links to each other through the I2C bus with controller 101, wherein:
When 3-axis acceleration sensor 102INT1 and INT2 pin order generation rising edge level; And judge that 3-axis acceleration sensor in the Preset Time order FREEFALL interruption takes place, ACTIVE interrupts and INACTIVAE interrupts; Controller 101 obtain the 3-axis acceleration value of 3-axis acceleration sensor 102 and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps, when 3-axis acceleration sensor 102INT2 pin high level and be judged as INACTIVAE and interrupt, interrupt and during lasting Preset Time; Perhaps; When 3-axis acceleration sensor 102INT1 pin continues repeatedly to produce the rising edge level, controller 101 access network nodes, and send the warning message that carries Network Access Point performance number information.
Concrete; In the present embodiment; The interruption that when the movement of falling object takes place 3-axis acceleration sensor 102, produces is interrupted FREEFALL; The interruption that when 3-axis acceleration sensor 102 moves, produces makes ACTIVE interrupt, and the interruption of generation is interrupted INACTIVAE when 3-axis acceleration sensor 102 is static.With the INT1 pin of FREEFALL interrupt map, when the level of this pin transfers high level to by low level, explain that FREEFALL takes place to interrupt to 3-axis acceleration sensor 102; ACTIVE is interrupted arriving with the INACTIVAE interrupt map INT2 pin of 3-axis acceleration sensor 102; And; ACTIVE interrupts and INACTIVAE interrupts in 8 inner interrupt source registers of respectively corresponding 3-axis acceleration sensor; For example: for example ACTIVE interrupts taking place, and this position will be changed to 1, otherwise is 0.The INT2 pin of 3-axis acceleration sensor 102 transfers high level to by low level; Controller 101 this moments can be through the value of I2C bus to the above-mentioned interrupt source register of 3-axis acceleration sensor 102 inquiries; Judge interrupt type through this value, and the value of register can automatic clear after being read at every turn.
INT1 and INT2 pin order generation rising edge level when 3-axis acceleration sensor 102; And judge that the FREEFALL interruption takes place this 3-axis acceleration sensor 102 order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Controller 101 obtain the 3-axis acceleration value of 3-axis acceleration sensor 102 and calculate the accekeration vector and square; And when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value, explain that the wearer at the automatic detection alarm of falling over of human body terminal has fallen down; When the INT1 of 3-axis acceleration sensor 102 pin continues repeatedly to produce the rising edge level; The wearer that the automatic detection alarm of falling over of human body terminal is described falls from high altitude; At this moment; Controller 101 access network nodes, and send the warning message that carries Network Access Point performance number information, provide the wearer at the automatic detection alarm of staff's falling over of human body terminal to meet accident.
FREEFALL interrupts, ACTIVE interrupts and INACTIVAE interrupts when 3-axis acceleration sensor order 102 in Preset Time takes place; Controller 101 obtain the 3-axis acceleration value of 3-axis acceleration sensor 102 and calculate the accekeration vector and square; Judge said accekeration vector and square with initial acceleration value vector and square difference greater than preset value; And detection obtains said INACTIVAE and interrupts more than the lasting 5S, explains that the wearer at the automatic detection alarm of falling over of human body terminal takes place seriously to fall down; At this moment, the warning message of controller 101 transmissions is serious warning message.
Generally speaking; Set 3-axis acceleration sensor order in 5S FREEFALL interruption, ACTIVE interruption and INACTIVAE interruption take place; The wearer at the automatic detection alarm of falling over of human body terminal just might fall down, and this time can set according to actual operating position certainly.
The accekeration vector of 3-axis acceleration sensor 102 and square account form following:
If three of 3-axis acceleration sensor 102 is X, Y, Z, wherein: the accekeration of X axle is x, and Y axle acceleration value is y, and Z axle acceleration value is z, so, the accekeration vector and quadratic sum be x
2+ y
2+ z
2
The accekeration vector that calculates when judgement and quadratic sum and initial acceleration value vector and square difference greater than (0.7g)
2The time, can judge that the wearer at the automatic detection alarm of falling over of human body terminal falls down, certainly, above-mentioned comparison value can reset as the case may be, is not limited in (0.7g)
2
The power consumption at the automatic detection alarm of existing falling over of human body terminal is all higher, can bring inconvenience the automatic detection alarm of the disclosed falling over of human body of present embodiment terminal to use; Promptly get into dormant state after accomplishing initialization, have only controller 101 inner real time clock operations this moment, power consumption reaches the uA level; Can reduce power consumption, prolong supplying cell serviceable life, when 3-axis acceleration sensor 102INT1 pin produces the rising edge level; Controller 101 is waken up, begins to accomplish subsequent operation, and; In case report to the police after the end, the terminal has got into dormant state again.
Yet another embodiment of the invention also discloses the automatic detection alarm of a kind of falling over of human body terminal, and is as shown in Figure 2, comprises controller 101,3-axis acceleration sensor 102 and input block 103, wherein:
Concrete, in the present embodiment, input block 103 can be designed to the button form, also can be designed to other forms.
Yet another embodiment of the invention also discloses the automatic detection alarm of a kind of falling over of human body terminal, and is as shown in Figure 3, comprises controller 101,3-axis acceleration sensor 102 and alarm unit 104, wherein:
Above-mentioned three the automatic detection alarm of the disclosed falling over of human body of embodiment terminals, controller can have two kinds of ways of realization, below describes through two embodiment again.
One of which: as shown in Figure 4, controller comprises single-chip microcomputer 201 and the transceiver 202 that links to each other with single-chip microcomputer 201; Wherein:
When 3-axis acceleration sensor 203INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor 203 order in 5S, ACTIVE interrupts and INACTIVAE interrupts; Single-chip microcomputer 201 obtain the 3-axis acceleration value of 3-axis acceleration sensor 203 and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference greater than (0.7g)
2The time; Perhaps, when 3-axis acceleration sensor 203INT1 pin continued repeatedly to produce the rising edge level, single-chip microcomputer 201 control transceivers 202 access network nodes, transmission carried the warning message of Network Access Point performance number information.
And; The automatic detection alarm of the disclosed falling over of human body of present embodiment terminal; Can also comprise timer in the single-chip microcomputer 201, when this timer then after, single-chip microcomputer 201 control transceivers 202 access network nodes, send the warning message that carries Network Access Point performance number information.
Concrete, single-chip microcomputer 201 according to the 3-axis acceleration value calculate the accekeration vector and square, when judge the accekeration vector and square with initial acceleration value vector and square difference greater than (0.7g)
2The time, perhaps, when the timer of single-chip microcomputer 201 then after; Single-chip microcomputer 201 control transceivers 202 send and insert claim frame; Receive that at the access point of the automatic detection alarm terminal surrounding of falling over of human body the request back to the terminal return information, receives single-chip microcomputer 201 through transceiver 202, single-chip microcomputer 201 calculates to be received the performance number of answer and selects the maximum access point of performance number; Control transceiver 202 access networks, and the data that will contain warning message and access point performance number information send through transceiver 202.
And; After each access point is received the access claim frame at the automatic detection alarm of falling over of human body terminal; Because can only have an access point to take wireless transmission channel, so each access point is not the horse back return information at synchronization; But random delay a period of time (1～39ms), send a reply information simultaneously to avoid a plurality of access points.
The disclosed transceiver of present embodiment adopts the ZigBee transceiver, can solve the automatic detection alarm of existing falling over of human body terminal and adopt GPS to combine GSM and the cost that causes is high, problem such as is not easy to carry.
Its two: as shown in Figure 5, said controller has the single-chip microcomputer 301 of transmission-receiving function for set, and this single-chip microcomputer comprises control module and Transmit-Receive Unit, wherein:
When 3-axis acceleration sensor 302INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor 302 order in 5S, ACTIVE interrupts and INACTIVAE interrupts; The control module of single-chip microcomputer 301 obtain the 3-axis acceleration value of 3-axis acceleration sensor 302 and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps; When 3-axis acceleration sensor 302INT1 pin continued repeatedly to produce the rising edge level, the control module of single-chip microcomputer 301 control Transmit-Receive Unit access network nodes, transmission carried the warning message of Network Access Point performance number information.
The concrete working condition at the automatic detection alarm of the disclosed falling over of human body of present embodiment terminal is identical with the disclosed content of the foregoing description, sees also the disclosed content of the foregoing description, repeats no more here.
And, also comprise timer in the single-chip microcomputer 301, when this timer then after, the Transmit-Receive Unit access network nodes of the control module control single chip computer 301 of single-chip microcomputer 301, send the warning message carry Network Access Point performance number information.
Equally; The disclosed 3-axis acceleration sensor of above-mentioned two embodiment 302 orders take place FREEFALL interrupts, ACTIVE interrupts and INACTIVAE interrupts time, 3-axis acceleration sensor 302 accekeration vectors and square with initial acceleration value vector and square the comparison value of difference all be not limited to above-mentioned openly value, can change as the case may be.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the automatic detection alarm of a falling over of human body terminal is characterized in that, comprising: controller and the 3-axis acceleration sensor that links to each other through the I2C bus with this controller, wherein:
When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said controller obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps; When said 3-axis acceleration sensor INT1 pin continues repeatedly to produce the rising edge level, said controller access network nodes, and send the warning message that carries Network Access Point performance number information.
2. terminal according to claim 1; It is characterized in that, also comprise: the input block that links to each other with said controller, when this input block is triggered; Said controller access network nodes, and send the warning message that carries Network Access Point performance number information.
3. terminal according to claim 1 is characterized in that, also comprises alarm unit, is used for when said controller access network nodes also sends the warning message that carries Network Access Point performance number information, reporting to the police.
4. terminal according to claim 1 is characterized in that, when said 3-axis acceleration sensor INT1 pin produced the rising edge level, said controller was waken up.
5. terminal according to claim 1; It is characterized in that; When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; Judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said controller obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square; And when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value, if said INACTIVAE interrupts continuing Preset Time, the warning message of said controller transmission is serious warning message.
6. terminal according to claim 1 is characterized in that, said controller comprises single-chip microcomputer and the transceiver that links to each other with said single-chip microcomputer; Wherein:
When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said single-chip microcomputer obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps; When said 3-axis acceleration sensor INT1 pin continued repeatedly to produce the rising edge level, the said transceiver access network nodes of said Single-chip Controlling, transmission carried the warning message of Network Access Point performance number information.
7. terminal according to claim 6 is characterized in that, said transceiver is the ZigBee transceiver.
8. terminal according to claim 6 is characterized in that, also comprises timer in the said single-chip microcomputer, when this timer then after, the said transceiver access network nodes of said Single-chip Controlling, send the warning message carry Network Access Point performance number information.
9. terminal according to claim 1 is characterized in that, said controller is for gathering the single-chip microcomputer that transmission-receiving function is arranged, and this single-chip microcomputer comprises control module and Transmit-Receive Unit, wherein:
When said 3-axis acceleration sensor INT1 and INT2 pin order generation rising edge level; And judge that the FREEFALL interruption takes place 3-axis acceleration sensor order in Preset Time, ACTIVE interrupts and INACTIVAE interrupts; Said control module obtain the 3-axis acceleration value of said 3-axis acceleration sensor and calculate the accekeration vector and square, and when judge said accekeration vector and square with initial acceleration value vector and square difference during greater than preset value; Perhaps; When said 3-axis acceleration sensor INT1 pin continued repeatedly to produce the rising edge level, said control module was controlled said Transmit-Receive Unit access network nodes, is sent the warning message that carries Network Access Point performance number information.
10. terminal according to claim 9; It is characterized in that; Also comprise timer in the said single-chip microcomputer, when this timer then after, said control module is controlled said Transmit-Receive Unit access network nodes, is sent the warning message carry Network Access Point performance number information.
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| CN2011100625911A CN102393992A (en) | 2011-03-15 | 2011-03-15 | Alarm terminal capable of automatically detecting tumble of human body |
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| CN104157094B (en) * | 2013-05-14 | 2018-03-23 | 纬创资通股份有限公司 | Emergency detection method for mobile device |
| CN104103150A (en) * | 2014-07-11 | 2014-10-15 | 成都理想科技开发有限公司 | Tumble alarm |
| CN105078471A (en) * | 2015-09-09 | 2015-11-25 | 成都手杖科技有限公司 | Falling monitoring apparatus based on ZigBee |
| EP3327690A1 (en) * | 2016-11-29 | 2018-05-30 | Telecom Design | Improved fall detection device |
| FR3059454A1 (en) * | 2016-11-29 | 2018-06-01 | Telecom Design | METHOD AND DEVICE FOR MONITORING AND DETECTING FALLS |
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| CN109035702A (en) * | 2018-09-30 | 2018-12-18 | 胡青青 | Fall detection method, device and wearable device |
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