CN107561521A - A kind of method and apparatus of wireless distance finding - Google Patents
A kind of method and apparatus of wireless distance finding Download PDFInfo
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- CN107561521A CN107561521A CN201610509784.XA CN201610509784A CN107561521A CN 107561521 A CN107561521 A CN 107561521A CN 201610509784 A CN201610509784 A CN 201610509784A CN 107561521 A CN107561521 A CN 107561521A
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Abstract
The invention discloses a kind of method of wireless distance finding, applied to beacon equipment, this method includes：Calibration parameter for mobile terminal ranging is determined according to the test data of multiple calibration points；The calibration parameter includes：The corresponding relation of the signal intensity for the reception signal that the distance of each calibration point to beacon equipment receives with the calibration point from the beacon equipment；Send and broadcast the message to mobile terminal, wherein carrying the calibration parameter.The present invention can improve the precision of wireless distance finding.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of method and apparatus of wireless distance finding.
Background technology
With the development of the communication technology, location Based service (Location Based Service, LBS) is gradual
As indispensable instrument in people's daily life.The system of customer position information, which can typically be provided, includes GPS
The navigation positioning system such as (Global Positioning System, global positioning system), the Big Dipper.Positioning using GPS as representative
System mainly solves the problems, such as outdoor positioning, and indoor positioning technologies are the problems that current each major company is actively being studied.
It is the indoor positioning technologies of representative due to its extensive popularization using short range wireless transmission technologies such as bluetooth, Wifi
And the advantage of low cost, widely used.In the indoor positioning technologies based on Bluetooth technology, generally use base
Location algorithm is resolved in the position of distance.I.e. mobile device goes to calculate firstly the need of the intensity according to the wireless signal received
The distance of mobile device and signal transmitting terminal, when mobile device measure with multiple signals (>3), can after the distance of transmitting terminal
By resolving a prescription journey, the absolute coordinate of mobile device is extrapolated, so as to realize the purpose of indoor positioning.Therefore, movement is set
Standby resolved with the distance of signal sending end is part most crucial in indoor positioning.
The distance of mobile device and signal sending end resolves main solution using measuring reception signal at present
Power parameter RSSI (Received Signal Strength Indication, received signal strength indicator), then according to one
Fixed signal attenuation model estimates the distance for sending and receiving end, but because the propagation model of signal is extremely complex, therefore
The distance estimated generally has larger error.
To improve precision, calibration (Calibration) process is may require that in existing solution, that is, needs first to survey
The signal intensity of known distance is tried, is then estimated using wireless signal free space transmission model.Most typical application is
The i-Beacon technologies of Apple companies are, it is necessary to calibrate the RSSI signal intensities with a distance from one 1 meter from transmitting terminal, its calibration process
It is relatively easy, mainly using the broadcast packet in BLE (BlueTooth Low Energy, low-power consumption bluetooth) specification, at one
Or the node of multiple fixations places the BLE equipment as Beacon (beacon equipment).The equipment is not stopped according to BLE specification
Broadcast packet is externally launched on ground, and after receiving portion (being typically the wireless terminal of user) receives BLE broadcast packet, pass through solution
The content of broadcast packet is analysed, so as to obtain certain information, including various available retail shop's information, advertising message and positioning letter
Breath, wherein i-Beacon embedded in its transmit power after calibration, the transmit power using a byte in broadcast packet
It is the measured power that signal is sent by Beacon equipment tested in 1 meter of battle-sight range in calibration.In practical application
In, recipient can real-time testing go out the RSSI numerical value of current Beacon equipment, in combination with the school parsed from broadcast packet
Quasi- value, rule of thumb the derivation of equation goes out the distance value of current mobile device and Beacon equipment, and then completes follow-up interior and determine
Bit function.
Because i-Beacon standards only calibrate the performance number of 1 meter of distance, therefore its reference role is extremely limited, also results in
Its roughening estimated.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of method and apparatus of wireless distance finding, it is possible to increase wireless to survey
Away from precision.
The embodiments of the invention provide a kind of method of wireless distance finding, applied to beacon equipment, this method includes：
Calibration parameter for mobile terminal ranging is determined according to the test data of multiple calibration points；The calibration parameter bag
Include：The signal for the reception signal that the distance of each calibration point to beacon equipment receives with the calibration point from the beacon equipment
The corresponding relation of intensity；
Send and broadcast the message to mobile terminal, wherein carrying the calibration parameter.
Alternatively, the calibration parameter for mobile terminal ranging is determined according to the test data of multiple calibration points, including held
Row following steps a)-e)：
A) the number n of test point, the position of test point, the method for curve matching, the exponent number of fit polynomial function are set,
N is more than 1；
B) test data of each test point is obtained, the test data includes：Distance of the test point to beacon equipment
The corresponding relation of the signal intensity of the reception signal received with the test point from the beacon equipment；
C) according to the test data of the n test point got, the method for the curve matching based on setting and fitting are multinomial
The exponent number of formula function carries out curve fitting；
D) whether the result of judgment curves fitting meets calibration accuracy requirement, is then to perform step e), otherwise return to step
a)；
E) the n test point is defined as calibration point, by the distance of each calibration point to beacon equipment and the calibration
The corresponding relation of the signal intensity for the reception signal that point receives from the beacon equipment is as calibration parameter.
Alternatively, methods described also includes：
Made an appointment recommended parameter with mobile terminal, and/or recommended parameter is carried in the broadcast message；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method.
Alternatively, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
The embodiment of the present invention additionally provides a kind of method of wireless distance finding, and applied to mobile terminal, this method includes：
The broadcast message that beacon equipment is sent is received, calibration parameter is obtained from the broadcast message；The calibration parameter
Including：What the distance of each calibration point of n calibration point to beacon equipment received with the calibration point from the beacon equipment
The corresponding relation of the signal intensity of reception signal, n are more than 1；
Carried out curve fitting according to the calibration parameter of the n calibration point got, determine mobile terminal and beacon equipment
Functional relation between distance and the signal intensity of mobile terminal reception signal；
According to the signal intensity of the reception signal received from the beacon equipment and the functional relation determined, calculate
Go out the distance of this terminal and the beacon equipment.
Alternatively, methods described also includes：
Arrange recommended parameter with the beacon equipment, and/or recommended parameter is obtained from the broadcast message；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method.
Alternatively, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
The embodiment of the present invention additionally provides a kind of device of wireless distance finding, applied to beacon equipment, including：
Calibration parameter determining module, for determining the school for mobile terminal ranging according to the test data of multiple calibration points
Quasi- parameter；The calibration parameter includes：Each calibration point is to distance and the calibration point of beacon equipment from the beacon equipment
The corresponding relation of the signal intensity of the reception signal received；
Broadcast module, broadcast the message for being sent to mobile terminal, wherein carrying the calibration parameter.
Alternatively, calibration parameter determining module, for being determined to be used for mobile terminal according to the test data of multiple calibration points
The calibration parameter of ranging, including perform following steps a)-e)：
A) the number n of test point, the position of test point, the method for curve matching, the exponent number of fit polynomial function are set,
N is more than 1；
B) test data of each test point is obtained, the test data includes：Distance of the test point to beacon equipment
The corresponding relation of the signal intensity of the reception signal received with the test point from the beacon equipment；
C) according to the test data of the n test point got, the method for the curve matching based on setting and fitting are multinomial
The exponent number of formula function carries out curve fitting；
D) whether the result of judgment curves fitting meets calibration accuracy requirement, is then to perform step e), otherwise return to step
a)；
E) the n test point is defined as calibration point, by the distance of each calibration point to beacon equipment and the calibration
The corresponding relation of the signal intensity for the reception signal that point receives from the beacon equipment is as calibration parameter.
Alternatively, described device also includes：
Recommended parameter determining module, for being made an appointment recommended parameter with mobile terminal, and/or in the broadcast message
Carry recommended parameter；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method.
Alternatively, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
The embodiment of the present invention additionally provides a kind of device of wireless distance finding, applied to mobile terminal, including：
Calibration parameter acquisition module, for receiving the broadcast message of beacon equipment transmission, obtained from the broadcast message
Calibration parameter；The calibration parameter includes：Each calibration point of n calibration point to beacon equipment distance and the calibration point from
The corresponding relation of the signal intensity for the reception signal that the beacon equipment receives, n are more than 1；
Functional relation determining module, for being carried out curve fitting according to the calibration parameter of the n calibration point got, it is determined that
Functional relation between the signal intensity of the distance and mobile terminal reception signal of mobile terminal and beacon equipment；
Distance calculation module, for the signal intensity according to the reception signal received from the beacon equipment and determination
The functional relation gone out, calculate the distance of this terminal and the beacon equipment.
Alternatively, described device also includes：
Recommended parameter acquisition module, for arranging recommended parameter with the beacon equipment, and/or from the broadcast message
Obtain recommended parameter；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method.
Alternatively, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
Compared with prior art, the method and apparatus of a kind of wireless distance finding provided by the invention, beacon equipment is by multiple schools
Distance (the distance between calibration point and beacon equipment) on schedule is believed with the reception that the calibration point receives from the beacon equipment
Number the mapping relations of signal intensity (RSSI) be broadcast to mobile terminal as calibration parameter, mobile terminal receives beacon equipment
After the calibration parameter of broadcast, distance and the functional relation of received signal strength are determined based on multiple spot curve matching, utilize the letter
Number relations and this terminal actual test to received signal strength value determine the distance between this terminal and the beacon equipment
Value, so as to improve the precision of wireless distance finding.
Brief description of the drawings
Fig. 1 be lieutenant colonel of the embodiment of the present invention on schedule and calibrated distance schematic diagram.
Fig. 2 is low-power consumption bluetooth broadcast packet structural representation.
Fig. 3 be Fig. 2 shown in broadcast packet PDU in information data parameter schematic diagram.
Fig. 4 is a kind of method flow diagram (beacon equipment) of wireless distance finding of the embodiment of the present invention.
Fig. 5 is a kind of method flow diagram (mobile terminal) of wireless distance finding of the embodiment of the present invention.
Fig. 6 is a kind of schematic device (beacon equipment) of wireless distance finding of the embodiment of the present invention.
Fig. 7 is a kind of schematic device (mobile terminal) of wireless distance finding of the embodiment of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
The maximum application distance that the embodiment of the present invention defines Bluetooth beacon (Beacon) equipment is Max_Dis, the i.e. bluetooth
The ultimate range that Beacon equipment can operate；The value is relevant with the transmission power of bluetooth equipment, and currently used bluetooth is set
It is standby, usually 10 meters or so；
The number for defining the calibration point that Beacon equipment needs is Num_Cal, i.e., the quantity of the calibration point needed in system；
It is RSSI_Cal to define RSSI test value of each calibration point in calibrationn, n=1,2 ..., Num_Cal；
The distance for defining each calibration point distance Beacon equipment is Dn, n=1,2 ..., Num_Cal；
As shown in figure 1, origin is Beacon equipment in figure, the equipment externally launches broadcast packet always, when calibration, small
In Max_Dis distance (i.e. effective working distance) in division Num_Cal calibrate node (can equidistantly divide or
Any spacing division).Using the wireless device of bluetooth is supported, as calibration point, respective rssi measurement value is recorded respectively, is true
Accuracy is protected, calibration point can each test several times, do weighted average.The result of test can be recorded as the table of table 1
Lattice：
| Distance | D1 | D2 | D3 | … | DNum_Cal |
| RSSI value | RSSI_Cal1 | RSSI_Cal2 | RSSI_Cal3 | … | RSSI_CalNum_Cal |
Table 1
According to the test result of table 1, by the way of curve matching, the functional relation between distance D and RSSI is obtained, such as
Shown in equation 1 below -1：
Y=a0+a1x+a2x2+a3x3+...+amxm (1-1)
Wherein, y is distance, and x is rssi measurement value；
In curve fitting algorithm, least square method (also known as least squares method) is more commonly used method, and it passes through minimum
The quadratic sum for changing error finds the optimal function matching of data, so as to complete the process of curve matching.
According to the data of table 1, using least square method, coefficient a can be easily solved0, a1..., am, estimate away from
From the functional relation with RSSI, and ensure that the root mean square of sample point tolerance is minimum.The solution of least square method has a variety of ready-made
Formula, such as newton elimination approach.Parameter m size determines the exponent number of fit polynomial function, can be according to being actually needed
Set.
During calibration point is arranged, using the calibration method of multiple points, in node known to each distance, record
Its RSSI test value (can be the average value repeatedly measured), is then carried out curve fitting using least square method.Calibrating
During, can by changing the position of calibration point, distance, the parameter adjustment calibration accuracy such as exponent number of fit polynomial function,
Untill result is satisfied with.Calibration accuracy satisfaction after, calibration parameter value can be recorded in Beacon equipment, and by this
A little calibration parameter values (distance and corresponding RSSI value) are embedded into Beacon broadcast packet according to certain form, send out in real time
Onsite user is given, after user extracts corresponding distance and RSSI value from broadcast packet, in the upper layer software (applications) of mobile terminal
In by least square method, calculate coefficient a0, a1..., am, and with reference to the RSSI that mobile terminal is measured in real time at present, adopt
With formula 1-1, the distance of user and Beacon equipment are calculated.
As shown in Fig. 2 in the broadcast pack arrangement of low-power consumption bluetooth, for broadcast channel, Access Address are arranged to
0x8E89BED6, for other data channels, address part is determined by different connections.PDU (Protocol Data Unit,
Protocol Data Unit) include datagram header (2 bytes：State payload data length and type --- whether equipment props up
Hold connection etc.) and the currently active load data (most 37 bytes).Wherein, first 6 bytes in payload data are
The MAC Address of equipment, so actual information data highest can account for 31 bytes.As shown in figure 3, technical scheme,
In this 31 byte, special field is defined, for transmitting above-mentioned calibration parameter.
Prefix:Bag prefix, for distinguishing the identifier of application；Can be according to Bluetooth protocol, and by user's self-defining；
Order:Define the fit polynomial function exponent number that Beacon equipment is recommended, i.e. multinomial in formula 1-1
Function exponent number；
Num：Define the number of calibration point；
ParData:Calibration value on each calibration point, unnecessary part completion zero, its form using [distance RSSI] to
Mode, distance use rice as unit
Table 2 below is a kind of example of frame format：
Table 2
" AABBCCDDEEFFGGHHII " that the frame uses is uses 4 rank multinomial letters using prefix, iunction for curve
Number, employs altogether 7 calibration points, and the distance of this 7 calibration points is respectively：1,2,3,4,5,6,7 meter, RSSI test values point
Wei not FF, F0, E0, D0, C2, B1, A1.
As shown in figure 4, the embodiments of the invention provide a kind of method of wireless distance finding, applied to beacon equipment, this method
Including：
S410, the calibration parameter for mobile terminal ranging is determined according to the test data of multiple calibration points；The calibration
Parameter includes：The reception signal that the distance of each calibration point to beacon equipment receives with the calibration point from the beacon equipment
Signal intensity corresponding relation；
S420, send and broadcast the message to mobile terminal, wherein carrying the calibration parameter；
Wherein, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
Wherein, the signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal；
Wherein, methods described also includes：
Made an appointment recommended parameter with mobile terminal, and/or recommended parameter is carried in the broadcast message；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method；
For example curve-fitting method can make an appointment, the number n of calibration point and the exponent number of fit polynomial function can be with
Carried in broadcast message；
Wherein, the method for the curve matching includes：Least square method；
Wherein, the calibration parameter for mobile terminal ranging is determined according to the test data of multiple calibration points, including performed
Following steps a)-e)：
A) the number n of test point, the position of test point, the method for curve matching, the exponent number of fit polynomial function are set,
N is more than 1；
B) test data of each test point is obtained, the test data includes：Distance of the test point to beacon equipment
The corresponding relation of the signal intensity of the reception signal received with the test point from the beacon equipment；
C) according to the test data of the n test point got, the method for the curve matching based on setting and fitting are multinomial
The exponent number of formula function carries out curve fitting；
D) whether the result of judgment curves fitting meets calibration accuracy requirement, is then to perform step e), otherwise return to step
a)；
E) the n test point is defined as calibration point, by the distance of each calibration point to beacon equipment and the calibration
The corresponding relation of the signal intensity for the reception signal that point receives from the beacon equipment is as calibration parameter；
As shown in figure 5, the embodiments of the invention provide a kind of method of wireless distance finding, applied to mobile terminal, this method
Including：
S510, the broadcast message that beacon equipment is sent is received, calibration parameter is obtained from the broadcast message；The calibration
Parameter includes：The distance of each calibration point of n calibration point to beacon equipment receives with the calibration point from the beacon equipment
The corresponding relation of the signal intensity of the reception signal arrived, n are more than 1；
S520, carried out curve fitting according to the calibration parameter of the n calibration point got, determine that mobile terminal is set with beacon
Functional relation between standby distance and the signal intensity of mobile terminal reception signal；
S530, closed according to the signal intensity of the reception signal received from the beacon equipment and the function determined
System, calculate the distance of this terminal and the beacon equipment；
Wherein, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
Wherein, the signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal；
Wherein, methods described also includes：
Arrange recommended parameter with the beacon equipment, and/or recommended parameter is obtained from the broadcast message；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method；
For example curve-fitting method can make an appointment, the number n of calibration point and the exponent number of fit polynomial function can be with
Carried in broadcast message；
Wherein, the method for the curve matching includes：Least square method；
As shown in fig. 6, the embodiments of the invention provide a kind of device of wireless distance finding, applied to beacon equipment, including：
Calibration parameter determining module 601, for being determined to be used for mobile terminal ranging according to the test data of multiple calibration points
Calibration parameter；The calibration parameter includes：Each calibration point is to distance and the calibration point of beacon equipment from the beacon
The corresponding relation of the signal intensity for the reception signal that equipment receives；
Broadcast module 602, broadcast the message for being sent to mobile terminal, wherein carrying the calibration parameter.
Wherein, calibration parameter determining module 601, for being determined to be used for mobile terminal according to the test data of multiple calibration points
The calibration parameter of ranging, including perform following steps a)-e)：
A) the number n of test point, the position of test point, the method for curve matching, the exponent number of fit polynomial function are set,
N is more than 1；
B) test data of each test point is obtained, the test data includes：Distance of the test point to beacon equipment
The corresponding relation of the signal intensity of the reception signal received with the test point from the beacon equipment；
C) according to the test data of the n test point got, the method for the curve matching based on setting and fitting are multinomial
The exponent number of formula function carries out curve fitting；
D) whether the result of judgment curves fitting meets calibration accuracy requirement, is then to perform step e), otherwise return to step
a)；
E) the n test point is defined as calibration point, by the distance of each calibration point to beacon equipment and the calibration
The corresponding relation of the signal intensity for the reception signal that point receives from the beacon equipment is as calibration parameter.
Wherein, described device also includes：
Recommended parameter determining module 603, disappear for being made an appointment recommended parameter with mobile terminal, and/or in the broadcast
Recommended parameter is carried in breath；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method.
Wherein, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
Wherein, the method for the curve matching includes：Least square method；
As shown in fig. 7, the embodiments of the invention provide a kind of device of wireless distance finding, applied to mobile terminal, including：
Calibration parameter acquisition module 701, for receiving the broadcast message of beacon equipment transmission, obtained from the broadcast message
Take calibration parameter；The calibration parameter includes：Distance and the calibration point of each calibration point of n calibration point to beacon equipment
The corresponding relation of the signal intensity of the reception signal received from the beacon equipment, n are more than 1；
Functional relation determining module 702, for being carried out curve fitting according to the calibration parameter of the n calibration point got,
Determine the functional relation between the distance of mobile terminal and beacon equipment and the signal intensity of mobile terminal reception signal；
Distance calculation module 703, for according to the signal intensity of reception signal received from the beacon equipment and
The functional relation determined, calculate the distance of this terminal and the beacon equipment.
Wherein, described device also includes：
Recommended parameter acquisition module, for arranging recommended parameter with the beacon equipment, and/or from the broadcast message
Obtain recommended parameter；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, fit polynomial function
Exponent number, curve-fitting method.
Wherein, the broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
Wherein, the method for the curve matching includes：Least square method；
A kind of method and apparatus for wireless distance finding that above-described embodiment provides, beacon equipment is by the distance of multiple calibration points
The signal for the reception signal that the distance between (calibration point with beacon equipment) receives with the calibration point from the beacon equipment is strong
The mapping relations for spending (RSSI) are broadcast to mobile terminal as calibration parameter, and mobile terminal receives the calibration of beacon equipment broadcast
After parameter, distance and the functional relation of received signal strength are determined based on multiple spot curve matching, utilize the functional relation and this
Terminal actual test to received signal strength value determine the distance between this terminal and the beacon equipment value, so as to improve
The precision of wireless distance finding.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits, accordingly
Ground, each module/unit in above-described embodiment can be realized in the form of hardware, can also use the shape of software function module
Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
It should be noted that the present invention can also have other various embodiments, without departing substantially from of the invention spiritual and its essence
In the case of, those skilled in the art can make various corresponding changes and deformation according to the present invention, but these are corresponding
Change and deform the protection domain that should all belong to appended claims of the invention.
Claims (14)
1. a kind of method of wireless distance finding, applied to beacon equipment, this method includes：
Calibration parameter for mobile terminal ranging is determined according to the test data of multiple calibration points；The calibration parameter includes：
The signal for the reception signal that the distance of each calibration point to beacon equipment receives with the calibration point from the beacon equipment is strong
The corresponding relation of degree；
Send and broadcast the message to mobile terminal, wherein carrying the calibration parameter.
2. the method as described in claim 1, it is characterised in that：
Calibration parameter for mobile terminal ranging is determined according to the test data of multiple calibration points, including performs following steps
a)-e)：
A) the setting number n of test point, the position of test point, the method for curve matching, the exponent number of fit polynomial function, n are big
In 1；
B) test data of each test point is obtained, the test data includes：Test point to beacon equipment distance with should
The corresponding relation of the signal intensity for the reception signal that test point receives from the beacon equipment；
C) according to the test data of the n test point got, the method and polynomial fitting letter of the curve matching based on setting
Several exponent numbers carry out curve fitting；
D) whether the result of judgment curves fitting meets calibration accuracy requirement, is then to perform step e), otherwise return to step a)；
E) the n test point is defined as calibration point, by the distance of each calibration point to beacon equipment and the calibration point from
The corresponding relation of the signal intensity for the reception signal that the beacon equipment receives is as calibration parameter.
3. the method as described in claim 1, it is characterised in that methods described also includes：
Made an appointment recommended parameter with mobile terminal, and/or recommended parameter is carried in the broadcast message；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, the rank of fit polynomial function
Number, curve-fitting method.
4. such as the method any one of claim 1-3, it is characterised in that
The broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
5. a kind of method of wireless distance finding, applied to mobile terminal, this method includes：
The broadcast message that beacon equipment is sent is received, calibration parameter is obtained from the broadcast message；The calibration parameter includes：
The distance of each calibration point of n calibration point to beacon equipment is believed with the reception that the calibration point receives from the beacon equipment
Number signal intensity corresponding relation, n be more than 1；
Carried out curve fitting according to the calibration parameter of the n calibration point got, determine the distance of mobile terminal and beacon equipment
Functional relation between the signal intensity of mobile terminal reception signal；
According to the signal intensity of the reception signal received from the beacon equipment and the functional relation determined, this is calculated
Terminal and the distance of the beacon equipment.
6. method as claimed in claim 5, it is characterised in that methods described also includes：
Arrange recommended parameter with the beacon equipment, and/or recommended parameter is obtained from the broadcast message；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, the rank of fit polynomial function
Number, curve-fitting method.
7. the method as described in claim 5 or 6, it is characterised in that：
The broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
8. a kind of device of wireless distance finding, applied to beacon equipment, including：
Calibration parameter determining module, for determining the calibration ginseng for mobile terminal ranging according to the test data of multiple calibration points
Number；The calibration parameter includes：The distance of each calibration point to beacon equipment receives with the calibration point from the beacon equipment
The corresponding relation of the signal intensity of the reception signal arrived；
Broadcast module, broadcast the message for being sent to mobile terminal, wherein carrying the calibration parameter.
9. device as claimed in claim 8, it is characterised in that：
Calibration parameter determining module, for determining the calibration ginseng for mobile terminal ranging according to the test data of multiple calibration points
Number, including perform following steps a)-e)：
A) the setting number n of test point, the position of test point, the method for curve matching, the exponent number of fit polynomial function, n are big
In 1；
B) test data of each test point is obtained, the test data includes：Test point to beacon equipment distance with should
The corresponding relation of the signal intensity for the reception signal that test point receives from the beacon equipment；
C) according to the test data of the n test point got, the method and polynomial fitting letter of the curve matching based on setting
Several exponent numbers carry out curve fitting；
D) whether the result of judgment curves fitting meets calibration accuracy requirement, is then to perform step e), otherwise return to step a)；
E) the n test point is defined as calibration point, by the distance of each calibration point to beacon equipment and the calibration point from
The corresponding relation of the signal intensity for the reception signal that the beacon equipment receives is as calibration parameter.
10. device as claimed in claim 8, it is characterised in that described device also includes：
Recommended parameter determining module, for being made an appointment recommended parameter with mobile terminal, and/or carried in the broadcast message
Recommended parameter；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, the rank of fit polynomial function
Number, curve-fitting method.
11. such as the device any one of claim 8-10, it is characterised in that
The broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
12. a kind of device of wireless distance finding, applied to mobile terminal, including：
Calibration parameter acquisition module, for receiving the broadcast message of beacon equipment transmission, calibration is obtained from the broadcast message
Parameter；The calibration parameter includes：Each calibration point of n calibration point to beacon equipment distance and the calibration point from described
The corresponding relation of the signal intensity for the reception signal that beacon equipment receives, n are more than 1；
Functional relation determining module, for being carried out curve fitting according to the calibration parameter of the n calibration point got, it is determined that mobile
Functional relation between the signal intensity of the distance and mobile terminal reception signal of terminal and beacon equipment；
Distance calculation module, for according to the signal intensity of reception signal that is received from the beacon equipment and determining
Functional relation, calculate the distance of this terminal and the beacon equipment.
13. device as claimed in claim 12, it is characterised in that described device also includes：
Recommended parameter acquisition module, for arranging recommended parameter with the beacon equipment, and/or obtained from the broadcast message
Recommended parameter；
Wherein, the recommended parameter includes at least one of following information：The number of calibration point, the rank of fit polynomial function
Number, curve-fitting method.
14. the device as described in claim 12 or 13, it is characterised in that：
The broadcast message is the broadcast packet of low-power consumption bluetooth BLE specifications；
The signal intensity of the reception signal includes：The received signal strength indicator RSSI of the reception signal.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389610A (en) * | 2018-01-26 | 2018-08-10 | 深圳市沃特沃德股份有限公司 | The data record method and device of flying disc |
| CN109116341A (en) * | 2018-07-31 | 2019-01-01 | 北京小米移动软件有限公司 | Method for building up, distance detection method and device, the electronic equipment of range function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625447A (en) * | 2012-03-14 | 2012-08-01 | 东南大学 | Heuristic node localization method in wireless sensor network |
| CN103237344A (en) * | 2013-04-08 | 2013-08-07 | 北京航空航天大学 | Indoor antenna sensor network positioning method based on received signal strength indication |
| CN104036136A (en) * | 2014-06-10 | 2014-09-10 | 杭州电子科技大学 | Close-range precise positioning method based on RSSI (Received Signal Strength Indication) |
| CN104113849A (en) * | 2013-04-17 | 2014-10-22 | 普天信息技术研究院有限公司 | Correction method of propagation model |
| CN104144496A (en) * | 2014-07-28 | 2014-11-12 | 北京升哲科技有限公司 | Indoor positioning method and system based on beacon devices |
-
2016
- 2016-06-30 CN CN201610509784.XA patent/CN107561521A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625447A (en) * | 2012-03-14 | 2012-08-01 | 东南大学 | Heuristic node localization method in wireless sensor network |
| CN103237344A (en) * | 2013-04-08 | 2013-08-07 | 北京航空航天大学 | Indoor antenna sensor network positioning method based on received signal strength indication |
| CN104113849A (en) * | 2013-04-17 | 2014-10-22 | 普天信息技术研究院有限公司 | Correction method of propagation model |
| CN104036136A (en) * | 2014-06-10 | 2014-09-10 | 杭州电子科技大学 | Close-range precise positioning method based on RSSI (Received Signal Strength Indication) |
| CN104144496A (en) * | 2014-07-28 | 2014-11-12 | 北京升哲科技有限公司 | Indoor positioning method and system based on beacon devices |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389610A (en) * | 2018-01-26 | 2018-08-10 | 深圳市沃特沃德股份有限公司 | The data record method and device of flying disc |
| CN110736994B (en) * | 2018-07-18 | 2021-09-07 | 北京小米移动软件有限公司 | Distance detection function establishing method and device and distance detection method and device |
| CN110736994A (en) * | 2018-07-18 | 2020-01-31 | 北京小米移动软件有限公司 | Distance detection function establishing method and device and distance detection method and device |
| CN109116341A (en) * | 2018-07-31 | 2019-01-01 | 北京小米移动软件有限公司 | Method for building up, distance detection method and device, the electronic equipment of range function |
| CN109116342A (en) * | 2018-08-27 | 2019-01-01 | 网易（杭州）网络有限公司 | Localization method, device, medium and calculating equipment |
| CN109116342B (en) * | 2018-08-27 | 2021-03-12 | 杭州易现先进科技有限公司 | Positioning method, positioning device, positioning medium and computing equipment |
| CN109541543A (en) * | 2019-01-09 | 2019-03-29 | 深圳市民明科技有限公司 | A kind of fire-fighting Field Force positioning system, localization method and detection positioning device |
| CN109752708A (en) * | 2019-02-28 | 2019-05-14 | 杭州羿腾科技有限公司 | It is a kind of that method and system are lost based on seeking for low-power consumption bluetooth signal ranging |
| CN110031800A (en) * | 2019-04-28 | 2019-07-19 | 京东方科技集团股份有限公司 | Localization method, device, computer equipment and storage medium |
| CN110231595A (en) * | 2019-05-28 | 2019-09-13 | 武汉盛硕电子有限公司 | A kind of method of bluetooth ranging, the test method of bluetooth equipment and system |
| CN110231595B (en) * | 2019-05-28 | 2024-05-14 | 武汉盛硕电子有限公司 | Bluetooth ranging method, bluetooth equipment testing method and system |
| CN113325404A (en) * | 2021-05-26 | 2021-08-31 | Oppo广东移动通信有限公司 | Method and device for measuring equipment distance and electronic equipment |
| WO2022247390A1 (en) * | 2021-05-26 | 2022-12-01 | Oppo广东移动通信有限公司 | Method and apparatus for measuring device distance, electronic device, and readable storage medium |
| CN115484497A (en) * | 2021-06-16 | 2022-12-16 | 瑞昱半导体股份有限公司 | Playing device and playing method |
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