CN107087839B - Positioning belt, positioning system and localization method - Google Patents
Positioning belt, positioning system and localization method Download PDFInfo
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- CN107087839B CN107087839B CN201710202895.0A CN201710202895A CN107087839B CN 107087839 B CN107087839 B CN 107087839B CN 201710202895 A CN201710202895 A CN 201710202895A CN 107087839 B CN107087839 B CN 107087839B
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- wearer
- positioning belt
- location information
- positioning
- acceleration
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- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010001897 Alzheimer's disease Diseases 0.000 description 1
- 208000000044 Amnesia Diseases 0.000 description 1
- 206010001954 Amnestic disease Diseases 0.000 description 1
- 206010039966 Senile dementia Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound 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Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41F—GARMENT FASTENINGS; SUSPENDERS
- A41F9/00—Belts, girdles, or waistbands for trousers or skirts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- 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
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
Abstract
Positioning belt, positioning system and localization method provided by the invention, the positioning belt, belt body are equipped with controller, locator, combined aural and visual alarm, power supply and are evenly distributed with multiple acceleration transducers along its length；Locator is used to obtain the location information of wearer；Acceleration transducer is used to obtain the acceleration of wearer；Power supply is used to power to positioning belt；Controller is also used to judge whether wearer is in the hole according to the location information of wearer, if in the hole, starting combined aural and visual alarm is alarmed.With being conveniently worn on, and according to preset danger zone, judge whether wearer faces a danger, peritropous personnel seek help.The positioning belt is low when apart from distant, reading location information frequency according to reading location information at a distance from danger zone, high when apart from closer, reading location information frequency, has the advantages that low in energy consumption, stand-by time length.
Description
Technical field
The invention belongs to communication technique fields, and in particular to positioning belt, positioning system and localization method.
Background technique
With the development of science and technology, existing positioning method is varied, as GPS positioning, base station location, wifi are fixed
The positioning of the tag recognitions such as position, IP positioning, RFID/ two dimensional code, bluetooth positioning etc..Location technology is increasingly applied in the daily of people
In life, such as in terms of electronic commerce context, emergency management and rescue, in terms of public safety, many benefits and just have been brought
Benefit.
Children because the age is small thoughtless, individually outgoing often to occur various accidents such as overboard, hits etc., at present I
State has a large amount of children missing every year, brings great misfortune to society, thus existing many positioning products come into being, small
The specific location of child is found and found out when child faces a danger in time, for example the mobile phone with GPS positioning function is placed on child's body
On, also such as with the wrist-watch etc. of positioning function.The current astogeny in China is got worse, the elderly with year growth,
Physiological function gradually failure, such as amnesia, senile dementia etc., it is individually outgoing that household is usually allowed to be difficult to trust, thus household is normal
The positioning product with positioning function is worn, to them often so as to the searching under fortuitous event.
Existing various positioning products and localization method have brought very big help really, allow household or guardian can
There is unexpected child or lost old man to search out, but existing positioning product is typically all timing to server or prison
It protects people's terminal and sends location information, between generally 10 minutes to one hour, since location information transmission is more frequent, just make
At positioning product power consumption compared with high, power consumption is big, stand-by time is short.And existing positioning product, head of a family or guardian are away from child
Or old man farther out when, be difficult to be on the scene in time receiving alarm and seeking help and be succoured.
Summary of the invention
For the defects in the prior art, the present invention provides positioning belt, positioning system and localization method, it is low in energy consumption, to
The machine time is long, and whether the personnel that can detect wearing locator automatically face a danger, and peritropous personnel seek help.
Including belt body and the buckle at belt body both ends is arranged in positioning belt, and belt body is equipped with control
Device processed, locator, combined aural and visual alarm, power supply and it is evenly distributed with multiple acceleration transducers along its length；Locator
For obtaining the location information of wearer；Acceleration transducer is used to obtain the acceleration of wearer；Power supply is used to give positioning waist
Band power supply, power supply is linked to be power circuit by two buckle snappings, when two buckle snappings, power circuit closure；Controller
It is also used to judge whether wearer is in the hole according to the location information of wearer, if in the hole, starting sound
Light crossing-signal is alarmed.
Preferably, one layer of rubber layer for wrapping up its outer surface is additionally provided on the buckle.
Positioning system, including above-mentioned positioning belt, server and mobile terminal；Server is for being preset with danger area
Domain；Positioning belt is used to obtain the location information and acceleration of wearer, and judges whether wearer is in conjunction with danger zone
Precarious position controls the combined aural and visual alarm and alarms if wearer is in the hole；Positioning belt be also used to by
Warning message is sent to mobile terminal by server.
Localization method is run in above-mentioned positioning system；Include:
S1: multiple danger zones are preset on server；
S2: positioning belt obtains the location information of wearer, is defined as monitoring location information, and be sent to server；
S3: server obtains the danger zone in monitoring range according to the monitoring location information of wearer, and is sent to and determines
Position waistband；
S4: positioning belt obtains the location information and acceleration of wearer in real time, and combines the danger area in monitoring range
Domain judges whether wearer is in the hole, if wearer is in the hole, controls the combined aural and visual alarm and carries out
Alarm；
S5: warning message is sent to mobile terminal by server by positioning belt.
Preferably, in the S4, positioning belt obtains the location information at the time of point of wearer are as follows:
Ti+1=Ti+Lj/3Vi；
Wherein, Ti+1For positioning belt next time reading position information at the time of, TiFor positioning belt last time reading position
At the time of information, LjIt is positioning belt at a distance from j-th of danger zone, ViFor being averaged in a monitoring time on positioning belt
Speed.
Preferably, in the S4, when the location information for judging wearer is fallen into danger zone, it is defined as dangerous shape
State；That is: work as LjWhen less than preset safe distance, judges that wearer falls into danger zone, be defined as precarious position.
Preferably, in the S4, when judging wearer's disequilibrium in conjunction with acceleration, it is defined as precarious position；That is:
Wherein, a is resultant force of all acceleration in detection plane component, ak+1It is+1 acceleration of kth in detection plane
Upper component, K are the quantity of acceleration transducer；B is all acceleration in the resultant force perpendicular to detection plane component, bk+1For
+ 1 acceleration of kth is perpendicular to detection plane component；The detection plane is plane locating for acceleration transducer, wherein
Whole acceleration transducers are in the same plane；
When a be greater than preset detection plane component threshold value, b be greater than it is preset perpendicular to detect plane component threshold value and
When the location information of wearer is fallen into danger zone, judges wearer's disequilibrium, be defined as precarious position.
Preferably, in the S4, when detect that wearer is in the hole and receive release alarm command when, positioning
Waistband obtains the danger zone being presently in, and is defined as releasing alarm region；Alarm region is released when detecting that wearer is in
When interior, control the combined aural and visual alarm and close；When detecting that the current location information of wearer is detached from releasing alarm region, clearly
Sky releases alarm region.
Preferably, further includes:
S6: when the location information for detecting positioning belt is detached from monitoring range, S2 is returned to.
Preferably, further includes:
S7: the positioning belt is also used to record the driving path of wearer: driving path includes starting point and inflection point；
Starting point is original position-information when positioning belt starts；
Positioning belt obtains the moving direction of wearer according to setpoint frequency and is defined as routing information, when being consecutively detected
When the number of the routing information of identical moving direction is more than preset linear movement number, the last routing information is saved；
When the moving direction for the wearer that positioning belt detects deviates the moving direction in last routing information, this road is saved
Diameter information, is defined as inflection point.
As shown from the above technical solution, positioning belt provided by the invention, positioning system and localization method, are conveniently worn on
With, and according to preset danger zone, judge whether wearer faces a danger, and carry out sound-light alarm, peritropous personnel
It seeks help.The positioning belt at a distance from danger zone according to location information is read, when apart from distant, reading location information
Frequency is low, high when apart from closer, reading location information frequency, has the advantages that low in energy consumption, stand-by time is grown.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the structural schematic diagram of positioning belt.
Fig. 2 is the structural block diagram of positioning system.
Fig. 3 is the flow chart of localization method.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.It should be noted that unless otherwise indicated, technical term or scientific term used in this application are should be belonging to the present invention
The ordinary meaning that field technical staff is understood.
Embodiment:
Positioning belt, as shown in Figure 1, including belt body and the buckle that belt body both ends are arranged in, waistband sheet
Body is equipped with controller, locator, combined aural and visual alarm, power supply and is evenly distributed with multiple acceleration sensings along its length
Device；Locator is used to obtain the location information of wearer；Acceleration transducer is used to obtain the acceleration of wearer；Power supply is used for
It powers to positioning belt, power supply is linked to be power circuit by two buckle snappings, and when two buckle snappings, power circuit is closed
It closes；Controller is also used to judge whether wearer is in the hole according to the location information of wearer, if in dangerous shape
State, starting combined aural and visual alarm are alarmed.
The waistband is embedded in belt body in use, fastening in the line in loins, waistband between modules, when by two
Buckle snapping, the power circuit closure in such waistband, power supply are started to work to the power electronic equipment in waistband.Accelerate
Degree embodies wearer's moment mobile speed degree, and acceleration is bigger, and wearer's movement is faster.It, can when acceleration is excessive
To be determined as that wearer is in a falling state.When it is implemented, acceleration transducer is distributed along the length direction of belt body
And be located in same level height, if in this way, acceleration is flat perpendicular to detection when wearer above moves in only the horizontal direction
The resultant force of component is zero on face；If wearer only moves in the vertical direction, conjunction of the acceleration in detection plane component
Power is zero；If wearer is in heeling condition, acceleration is in detection plane and perpendicular to there are divide in detection plane
Amount, if wearer fall, acceleration detection plane or perpendicular to detection plane on component it is excessive.The positioning belt side
Just with being worn on, and according to preset danger zone, judge whether wearer faces a danger, and carry out sound-light alarm, cause
The personnel's note that peritropous personnel seek help on periphery.
Wearer gets an electric shock in order to prevent, is additionally provided with one layer of rubber layer for wrapping up its outer surface on the buckle.It is specific real
Shi Shi is also provided with velocity sensor in belt body, for detecting the mobile speed of wearer.On one of buckle
It equipped with through-hole, is outwardly protruded on the side of another buckle equipped with clamping part, two buckles pass through through-hole interference by clamping part
Cooperate snapping, clamping part includes rubber section and the flexible conductive layer for being covered on rubber section outer surface, wherein flexible conductive layer and gold
Belong to the surface fitting of button.Rubber section can deformation occurs, so that clamping part passes through through-hole and is interference fitted snapping, when force, rubber
Deformation occurs in glue portion makes clamping part be detached from through-hole.When flexible conductive layer is guaranteed with through-hole snapping, between two buckles just
Normal open electricity.
Positioning system, as shown in Fig. 2, including above-mentioned positioning belt, server and mobile terminal；Server is for presetting
Dangerous region；Positioning belt is used to obtain the location information and acceleration of wearer, and judges wearer in conjunction with danger zone
It is whether in the hole, if wearer is in the hole, controls the combined aural and visual alarm and alarm；Positioning belt
It is also used to warning message being sent to mobile terminal by server.
Danger zone includes the regions such as river bank, stair, highway, which can be set either by guardian
Server is customized.In addition danger zone can also be by the way of being manually entered, i.e., server is by map transmission to mobile whole
End, guardian mark the side for needing alarm region according to the concrete condition of wearer manually in the map of mobile terminal load
Boundary forms the danger zone.After alarm, positioning belt is by warning message (location information, precarious position including wearer
Deng) mobile terminal is given, facilitate guardian to understand the position and precarious position that wearer is presently in time, and rescued in time
It helps.
Localization method, as shown in figure 3, being run in above-mentioned positioning system；Include:
S1: multiple danger zones are preset on server；
S2: positioning belt obtains the location information of wearer, is defined as monitoring location information, and be sent to server；
S3: server obtains the danger zone in monitoring range according to the monitoring location information of wearer, and is sent to and determines
Position waistband；
S4: positioning belt obtains the location information and acceleration of wearer in real time, and combines the danger area in monitoring range
Domain judges whether wearer is in the hole, if wearer is in the hole, controls the combined aural and visual alarm and carries out
Alarm；
S5: warning message is sent to mobile terminal by server by positioning belt.
When it is implemented, defining its initial location information when positioning belt starting as monitoring location information, monitoring position
Confidence breath needs the regional scope that monitors for indicate, and monitoring range can be the preset prison to monitor location information as the center of circle
Ranging is from the round monitoring region formed for radius.Step S2-S3 is used to reduce the danger zone quantity for needing to monitor, i.e., only needs
The danger zone for monitoring nearby (i.e. in monitoring range), does not need to monitor all danger zones, reduces positioning belt
Monitoring quantity reduces the power consumption of positioning belt, extends stand-by time.
The location information at the time of point of positioning belt acquisition wearer are as follows:
Ti+1=Ti+Lj/3Vi；
Wherein, Ti+1For positioning belt next time reading position information at the time of, TiFor positioning belt last time reading position
At the time of information, LjIt is positioning belt at a distance from j-th of danger zone, ViFor being averaged in a monitoring time on positioning belt
Speed.
When it is implemented, wearer can be best understood from if the frequency of positioning belt reading position information is higher
Location and it can know whether wearer is in dangerous as early as possible, but positioning belt continually reading position information,
Cause power consumption larger.But if in order to reduce power consumption, extend positioning belt read access time, allowing for guardian cannot be in time
Grasp the location of wearer.The interval of positioning belt twi-read location information and L in this wayj、ViIt is related, by upper
Formula can be seen that Lj/ViValue it is bigger, the interval of twi-read location information is longer, Lj/ViIndicate that wearer reaches j-th of danger
The time in danger zone domain illustrates wearer there are also the long periods to get to j-th of danger zone, Ke Yiyan if the time is longer
The time of long reading position information next time, reduces the number of positioning belt reading position information, reduce the power consumption of positioning belt.Separately
Outside, in order to guarantee in time to position wearer, the coefficient of detection moment point is preferably 3 in this method, as wearer
Reach the 1/3 of danger zone time.1/3 had both been not in that the positioning interval time is too long, and causing could not be dangerous in wearer's arrival
The location information that wearer is obtained before region occurs dangerous；It is too short the positioning interval time occur, leads to wearer's distance
The far location information for just obtaining wearer in danger zone, 1/3 while guaranteeing to obtain the location information of wearer in time, energy
Enough reduce the work times of locator to the greatest extent, preferably reduction power consumption.This method is according to the reading positioning at a distance from danger zone
Information, it is low when apart from distant, reading location information frequency, it is high when apart from closer, reading location information frequency, there is power consumption
Advantage low, stand-by time is long.
Precarious position in the S4 can judge by the following method:
Method one: in the S4, when the location information for judging wearer is fallen into danger zone, it is defined as dangerous shape
State；That is: work as LjWhen less than preset safe distance, judges that wearer falls into danger zone, be defined as precarious position.I.e. when fixed
Position waistband is too small at a distance from j-th of danger zone, is less than safe distance, it is believed that wearer is in the hole, safe distance
It is set according to the concrete condition of wearer.
Method two: in the S4, when judging wearer's disequilibrium in conjunction with acceleration, it is defined as precarious position；That is:
Wherein, a is resultant force of all acceleration in detection plane component, ak+1It is+1 acceleration of kth in detection plane
Upper component, K are the quantity of acceleration transducer；B is all acceleration in the resultant force perpendicular to detection plane component, bk+1For
+ 1 acceleration of kth is perpendicular to detection plane component；The detection plane is plane locating for acceleration transducer, wherein
Whole acceleration transducers are in the same plane；
When a be greater than preset detection plane component threshold value, b be greater than it is preset perpendicular to detect plane component threshold value and
When the location information of wearer is fallen into danger zone, judges wearer's disequilibrium, be defined as precarious position.
It ought detect that all acceleration are greater than detection plane component threshold value in the resultant force of detection plane component, and
All acceleration judge the pendant when the resultant force perpendicular to detection plane component is greater than perpendicular to detection plane component threshold value
Wearer falls or slides into.Detect plane component threshold value and perpendicular to detection plane component threshold value according to wearer's concrete condition
It determines.If wearer falls or slides into, and when falling into danger zone, judges that wearer is in the hole.If all add
Speed is greater than detection plane component threshold value and all acceleration flat perpendicular to detection in the resultant force of detection plane component
The resultant force of component is greater than perpendicular to detection plane component threshold value on face, but the location information of wearer does not fall within danger zone
It is interior, it does not alarm at this time.
In the S4, when detect that wearer is in the hole and receive release alarm command when, positioning belt obtains
The danger zone being presently in is taken, is defined as releasing alarm region；When detecting that wearer is in releasing alarm region, control
The combined aural and visual alarm is made to close；When detecting that the current location information of wearer is detached from releasing alarm region, releasing is emptied
Alarm region.
When it is implemented, releasing alarm command can be obtained by the releasing alarm button being arranged in belt body, such as
When fruit positioning belt false alarm, wearer can release alarm button releasing alarm by pressing, and illustrate when in the danger
It does not alarm when in region.After receiving releasing alarm command, before wearer does not leave the danger zone, even if detecting pendant
Wearer is in the hole, does not also alarm.If emptying data after detecting that wearer leaves the danger zone.The step is used
In the warning message of wearer's manual correction positioning belt inaccuracy, the accuracy of alarm is improved, while being also avoided not
The region repetition of alarms for needing to alarm.
Further include:
S6: when the location information for detecting positioning belt is detached from monitoring range, wearer is positioned again, is obtained
New monitoring region returns to S2.
Further include:
S7: the positioning belt is also used to record the driving path of wearer: driving path includes starting point and inflection point；
Starting point is original position-information when positioning belt starts；
Positioning belt obtains the moving direction of wearer according to setpoint frequency and is defined as routing information, when being consecutively detected
When the number of the routing information of identical moving direction is more than preset linear movement number, the last routing information is saved；
When the moving direction for the wearer that positioning belt detects deviates the moving direction in last routing information, this road is saved
Diameter information, is defined as inflection point.
This method is also used to record the driving path of wearer and is sent to mobile terminal, and guardian is facilitated quickly to search out
Wearer finds loss article on the driving path of wearer.The data that driving path mainly saves include starting point and
Inflection point；This method is after the routing information for obtaining a certain number of identical moving directions, it is believed that is currently at linear movement, then not
The routing information obtained in the same straight-line travelling section in face after being saved, saves the data volume of storage.When detecting movement side
To when deviateing the moving direction in last routing information, it is believed that wearer turns round, and records the inflection point.This method only passes through record
A small amount of data point can obtain the driving path of wearer, save the memory space of data occupancy.Move linearly number
It can be set as 3-5.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (6)
1. localization method, which is characterized in that
It is run in positioning system；The positioning system includes positioning belt, server and mobile terminal；Server is for presetting
Dangerous region；Positioning belt is used to obtain the location information and acceleration of wearer, and judges wearer in conjunction with danger zone
Whether in the hole, if wearer is in the hole, control combined aural and visual alarm is alarmed；Positioning belt is also used
In warning message is sent to mobile terminal by server；
The positioning belt includes belt body and the buckle that belt body both ends are arranged in, and belt body is equipped with control
Device, locator, combined aural and visual alarm, power supply and it is evenly distributed with multiple acceleration transducers along its length；Locator is used
In the location information for obtaining wearer；Acceleration transducer is used to obtain the acceleration of wearer；Power supply is used for positioning belt
Power supply, power supply is linked to be power circuit by two buckle snappings, when two buckle snappings, power circuit closure；Controller is also
Judge whether wearer is in the hole for the location information according to wearer, if in the hole, starts acousto-optic
Alarm is alarmed；
The localization method includes:
S1: multiple danger zones are preset on server；
S2: positioning belt obtains the location information of wearer, is defined as monitoring location information, and be sent to server；
S3: server obtains the danger zone in monitoring range, and be sent to positioning waist according to the monitoring location information of wearer
Band；
S4: positioning belt obtains the location information and acceleration of wearer in real time, and the danger zone in monitoring range is combined to sentence
Whether disconnected wearer is in the hole, if wearer is in the hole, controls the combined aural and visual alarm and alarms；
S5: warning message is sent to mobile terminal by server by positioning belt；
In the S4, positioning belt obtains the location information at the time of point of wearer are as follows:
Ti+1=Ti+Lj/3Vi；
Wherein, Ti+1For positioning belt next time reading position information at the time of, TiFor positioning belt last time reading position information
At the time of, LjIt is positioning belt at a distance from j-th of danger zone, ViFor the average speed on positioning belt in a monitoring time.
2. localization method according to claim 1, which is characterized in that in the S4, when the location information for judging wearer
When falling into danger zone, it is defined as precarious position；That is: work as LjWhen less than preset safe distance, judge that wearer falls into danger
In the domain of danger zone, it is defined as precarious position.
3. localization method according to claim 2, which is characterized in that in the S4, when combination acceleration judges wearer
When disequilibrium, it is defined as precarious position；That is:
Wherein, a is resultant force of all acceleration in detection plane component, ak+1Divide in detection plane for+1 acceleration of kth
Amount, K are the quantity of acceleration transducer；B is all acceleration in the resultant force perpendicular to detection plane component, bk+1For kth+1
A acceleration is perpendicular to detection plane component；The detection plane is plane locating for acceleration transducer, wherein all
Acceleration transducer is in the same plane；
When a is greater than preset detection plane component threshold value, b is greater than preset perpendicular to detection plane component threshold value and wearing
When the location information of person is fallen into danger zone, judges wearer's disequilibrium, be defined as precarious position.
4. localization method according to claim 2, which is characterized in that in the S4, when detect wearer be in danger
It state and receives when releasing alarm command, positioning belt obtains the danger zone that is presently in, is defined as releasing alarm region；
When detecting that wearer is in releasing alarm region, controls the combined aural and visual alarm and close；When detecting that wearer is current
Location information be detached from release alarm region when, empty releasing alarm region.
5. localization method according to claim 1, which is characterized in that further include:
S6: when the location information for detecting positioning belt is detached from monitoring range, S2 is returned to.
6. localization method according to claim 1, which is characterized in that further include:
S7: the positioning belt is also used to record the driving path of wearer: driving path includes starting point and inflection point；
Starting point is original position-information when positioning belt starts；
Positioning belt obtains the moving direction of wearer according to setpoint frequency and is defined as routing information, identical when being consecutively detected
When the number of the routing information of moving direction is more than preset linear movement number, the last routing information is saved；When fixed
When the moving direction for the wearer that position waistband detects deviates the moving direction in last routing information, this path letter is saved
Breath, is defined as inflection point.
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| CN109118829A (en) * | 2018-09-10 | 2019-01-01 | 北京航空航天大学东营研究院 | A kind of airport personnel dynamic monitoring and controlling method and system |
| CN109413583A (en) * | 2018-11-28 | 2019-03-01 | 浙江大华技术股份有限公司 | A kind of ranging control method and device |
| CN110558954A (en) * | 2019-09-10 | 2019-12-13 | 哈尔滨亿尚医疗科技有限公司 | Monitoring method, monitoring device and computer storage medium |
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| CN103247144A (en) * | 2012-02-07 | 2013-08-14 | 宇龙计算机通信科技(深圳)有限公司 | Traffic safety prompting method and mobile terminal |
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