CN106953701A - A kind of Internet of Things radio interference source measuring system and method - Google Patents
A kind of Internet of Things radio interference source measuring system and method Download PDFInfo
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- CN106953701A CN106953701A CN201710139510.0A CN201710139510A CN106953701A CN 106953701 A CN106953701 A CN 106953701A CN 201710139510 A CN201710139510 A CN 201710139510A CN 106953701 A CN106953701 A CN 106953701A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/27—Monitoring; Testing of receivers for locating or positioning the transmitter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/12—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
Abstract
The present invention relates to a kind of Internet of Things radio interference source measuring system and method, methods described includes the horizontal arrival bearing of measurement interference signal；Adjusting means time reference makes the markers of each device unified；Determining device current time true horizontal position (xi,yi)；It is determined that the RSSI value of current maximum interference signal；It is determined that the arrival bearing of current maximum interference signal；With the arrival bearing of maximum signal and the true horizontal position of device, pass through y=tan βnx+(yn‑tanβnxn) and y=tan βmx+(ym‑tanβmxm) calculate obtain maximum signal position of interference source (x, y).The advantage of system and method for the present invention compared with prior art is that device volume is small in system, and low cost is low in energy consumption；Multiple devices can synchronize measurement in system, and measuring method is quick and easy；And the systematic error of the present invention can be limited between ± 3 °, measurement accuracy requirement is met, is easy to quick location interference source position, the interference source measurement and positioning of the equipment close quarters such as the factory that is particularly suitable for use in.
Description
Technical field
This invention relates generally to radio monitoring technology, and a kind of more specifically it relates to Internet of Things radio interference
Source measuring system and method.
Background technology
Internet of Things is developed rapidly, and the Internet of Things wireless system overwhelming majority uses common frequency band, and the intensive application of equipment
And the aggravation of electromagnetic environmental pollution, further such that the complete deployment of Internet of Things and effectively operation difficulty increase, in many fields
Close, particularly dense urban and plant area, effectively identification interference source strength and location interference orientation are, it is necessary to a succinct new side
Case.
Public's Internet of Things uses more 2.4G frequency ranges and 433M frequency ranges, in addition, such as power private network uses 230M frequency ranges
Deng.Generally, many omnidirectional antennas arranged by multiple spot of existing method, extract RSSI receiver signal strengths, then comprehensively sentence
It is fixed, it is costly and time consuming；Also judge arrival bearing using single directional antenna, speed is slow, and low precision, to the position of interference source
Put location ambiguity.
The content of the invention
Regarding to the issue above, the present invention is solved existing by a kind of Internet of Things radio interference source measurement apparatus and its method
Have technology can not and meanwhile realize under the conditions of lower-cost it is quick accurate determine radio interference source the problem of.
To achieve these goals, the present invention is adopted the following technical scheme that.
A kind of Internet of Things radio interference source measurement apparatus, it is characterised in that including：
Motor drives triangle body rotary module, and the module includes the direct current generator of a table-surface level, and one by three faces
Size identical directional aerial is mutually set and the regular triangular prism shape rotary units of composition, a rotary shaft in 60 degree, and one subtracts
Fast gear and a bearing, the rotary shaft are arranged on described rotary unit one end and along along the direction of triangular prism axis, described
The main shaft of motor connects the rotary shaft by the reduction gearing and the bearing and drives it to horizontally rotate, the rotary unit
For obtaining interference signal on a large scale；
Module is run, for controlled motor driving triangle body rotary module and the binding analysis processing motor driving triangle
Signal obtained by the measurement of body rotary module, including：
Real time clock unit, for providing high-precision time reference for device other units and realizing timing function,
3D magnetic direction collecting units, for gathering current demand signal in earth's magnetic field X, Y and the magnetic-field component H of Z-directionx、HyWith
Hz,
Wireless interference signal acquiring unit, the RSSI value for determining the current interference signal that rotary unit is obtained, and from
Real time clock unit obtains current time index, and the RSSI value is combined with markers,
MCU units, for reading, storing and handle obtained by wireless interference signal acquiring unit and 3D magnetic direction collecting unit
To information, current maximum signal interference source is first judged, pass through the magnetic-field component (H ' of the interference sourceX,H’y) obtain this dress
True horizontal position (X, Y) is put, and passes through β=arctan (H 'y/H’x) calculate obtain current maximum signal interference source and
The horizontal sextant angle β in earth's magnetic field, wherein (H 'X,H’y)=(X, Y)；
The motor driving triangle body rotary module and the operation module are connected by wired or wireless way.
Further, the operation module also includes infrared remote control unit, for realizing that it is infrared controlled that external command passes through
Motor processed drives the rotary mode of triangle body rotary module.
Further, the operation module also includes liquid crystal display, for passing through the liquid crystal display contained by it
The information acquired in wireless interference signal acquiring unit is shown in real time.
It is a further object of the present invention to provide a kind of Internet of Things radio interference source positioning measurment system, it is characterised in that
Including at least two above-mentioned measurement apparatus and a master controller, the master controller collects MCU units in each device and obtained
To device true horizontal position and its maximum signal interference source and the horizontal sextant angle in earth's magnetic field finally determine interference source
Position；The device of each in system is connected to master controller by wired or wireless mode, and wherein preferred wireless is connected.
Unless otherwise instructed, heretofore described signal intensity refers to RSSI value.
It is a further object of the present invention to provide a kind of radio based on Internet of Things radio interference source positioning measurment system
Interference source locating measurement method, it is characterised in that including：
(1) radio interference source positioning measuring device i motor makes the rotary unit water of its drive device in activation system
Flat rotation, to obtain interference signal on a large scale, wherein i is the sequence number of the device in systems；
(2) time reference of radio interference source positioning measuring device i real time clock unit makes each in regulating system
The markers of device is unified；
(3) radio interference source positioning measuring device i gathers current by its 3D magnetic direction collecting unit respectively in system
Signal is in earth's magnetic field X, Y and the magnetic-field component H of Z-directionx、HyAnd Hz；
(4) radio interference source positioning measuring device i is determined by its wireless interference signal acquiring unit respectively in system
The RSSI value of the current interference signal obtained from rotary unit, and current time index is obtained from real time clock unit, by the RSSI value
Combined with markers；
(5) radio interference source positioning measuring device i reads and handled respectively air interference by its MCU unit in system
Information obtained by signal acquiring unit and 3D magnetic direction collecting units, first judges device i current maximum signal interference
Source, passes through the magnetic-field component (H ' of the interference sourceXi,H’yi) obtain device i true horizontal position (Xi,Yi), and pass through βi=
arctan(H’yi/H’xi) calculate the current maximum signal interference source for obtaining device i and the horizontal sextant angle β in earth's magnetic fieldi, wherein
(H’yi,H’xi)=(Xi,Yi)；
(6) master controller collects radio interference source positioning measuring device i true horizontal position (X respectivelyi,Yi) and its
Maximum signal interference source and the horizontal sextant angle β in earth's magnetic fieldi, and obtain maximum signal interference source using the calculating of the following group formula
Position (x, y):
Y=tan βnx+(yn-tanβnxn),
Y=tan βmx+(ym-tanβmxm),
Wherein, n ∈ i, m ∈ i, n ≠ m.
Further, the horizontal rotation is to be rotated centered on rotary shaft with 15 rpms of speed.
Further, the RSSI value be wireless interference signal acquiring unit according to the frequency investigation more than or equal to 10Hz and
Averaged after 5 original RSSI values for obtaining interference signal obtained by calculating.
The advantage of system and method for the present invention compared with prior art is that device volume is small in system, cost
It is low, it is low in energy consumption；Multiple devices can synchronize measurement in system, and measuring method is quick and easy；And the systematic error of the present invention
It can be limited between ± 3 °, meet measurement accuracy requirement, be easy to quick location interference source position, being applied to factory etc. by it sets
The interference source measurement and positioning of standby close quarters.
Brief description of the drawings
Fig. 1 is according to a kind of exemplary of Internet of Things radio interference source measurement apparatus one embodiment disclosed by the invention
Structure chart；
Fig. 2 is a kind of example according to another embodiment of Internet of Things radio interference source measurement apparatus disclosed by the invention
The structure chart of property；
Fig. 3 be according to it is disclosed by the invention based on Internet of Things radio interference source positioning measurment system one embodiment one
Plant exemplary structure chart；
Fig. 4 is according to final step in radio interference source locating measurement method one embodiment disclosed by the invention
Schematic diagram；
Fig. 5 is oriented according to Internet of Things radio interference source measurement apparatus one embodiment disclosed by the invention
Antenna radiation pattern.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.The refer to the attached drawing
The embodiment of description is exemplary, is only used for explaining the present invention, and can not be considered as limitation of the present invention.In order to avoid need not
Strategic point obscures the embodiment, and this part to some techniques knowns, i.e., is aobvious to those skilled in the art
And the technology being clear to, it is not described in detail.
Embodiment 1
As shown in figure 1, a kind of Internet of Things radio interference source measurement apparatus 100, it is characterised in that including：
Motor driving triangle body rotary module 110, the module includes the direct current generator 111 of a table-surface level, one
Mutually rotated by three face size identical directional aerial 112a, 112b and 112c in 60 degree of regular triangular prism shapes for setting and constituting single
Member 112, a rotary shaft 113, a reduction gearing 114 and a bearing 115, the rotary shaft 113 are arranged on the rotation
One end of unit 112 and along along the direction of triangular prism axis, the main shaft of the motor 111 passes through the reduction gearing 114 and described
Bearing 115 connects described its horizontal rotation of the driving of rotary shaft 113, and the rotary unit 112 is used to obtain interference signal on a large scale；
Module 120 is run, for controlled motor driving triangle body rotary module and the binding analysis processing motor driving
Signal obtained by the measurement of triangle body rotary module, including：
Real time clock unit 121, for providing high-precision time reference for device other units and realizing timing function,
3D magnetic direction collecting unit 122, for gathering current demand signal in earth's magnetic field X, Y and the magnetic-field component H of Z-directionx、Hy
And Hz,
Wireless interference signal acquiring unit 123, the RSSI value for determining the current interference signal that rotary unit is obtained, and
Current time index is obtained from real time clock unit, the RSSI value is combined with markers,
MCU units 124, for reading, storing and handling wireless interference signal acquiring unit and 3D magnetic direction collecting units
Resulting information, first judges current maximum signal interference source, passes through the magnetic-field component (H ' of the interference sourceX,H’y) obtain
Present apparatus true horizontal position (X, Y), and pass through β=arctan (H 'y/H’x) calculate and obtain the interference of current maximum signal
Source and the horizontal sextant angle β in earth's magnetic field, wherein (H 'X,H’y)=(X, Y)；
The motor driving triangle body rotary module 110 and the operation module 120 are connected by wired mode.
Embodiment 2
As shown in Fig. 2 a kind of Internet of Things radio interference source measurement apparatus 200, it is characterised in that including：
Motor driving triangle body rotary module 210, the module includes the 5V direct current generators 211 of a table-surface level, one
It is individual mutually to be set by three face size identical gains and constituted in 60 degree for 10dBi directional aerial 212a, 212b and 212c
Regular triangular prism shape rotary unit 212, a rotary shaft 213, a reduction gearing 214 and a bearing 215, the rotary shaft
213 are arranged on described one end of rotary unit 212 and along along the direction of triangular prism axis, and the main shaft of the motor 211 passes through described
Reduction gearing 214 and the bearing 215 connect described its horizontal rotation of the driving of rotary shaft 213, and the rotary unit 212 is used for big
Scope obtains interference signal；
Module 220 is run, for controlled motor driving triangle body rotary module and the binding analysis processing motor driving
Signal obtained by the measurement of triangle body rotary module, including：
Real time clock unit 221, for providing high-precision time reference for device other units and realizing timing function,
3D magnetic direction collecting unit 222, for gathering current demand signal in earth's magnetic field X, Y and the magnetic-field component H of Z-directionx、Hy
And Hz, the collecting unit of the present embodiment is provided which 12 data resolutions, measurable +/- 150mT magnetic fields in each measurement direction
In the range of field intensity so that it has 0.098mT/ high-precision resolution ratio,
Wireless interference signal acquiring unit 223, the RSSI value for determining the current interference signal that rotary unit is obtained, and
Current time index is obtained from real time clock unit, the RSSI value is combined with markers, is preferred to use for 2.4G frequency range the present embodiment
General Internet of Things chip realizes the unit, and the chip has -100 to -30dBm RSSI automatic measurement scopes,
MCU units 224, for reading, storing and handling wireless interference signal acquiring unit and 3D magnetic direction collecting units
Resulting information, first judges current maximum signal interference source, passes through the magnetic-field component (H ' of the interference sourceX,H’y) obtain
Present apparatus true horizontal position (X, Y), and pass through β=arctan (H 'y/H’x) calculate and obtain the interference of current maximum signal
Source and the horizontal sextant angle β in earth's magnetic field, wherein (H 'X,H’y)=(X, Y),
Infrared remote control unit 225, triangle body rotary module is driven for realizing external command by infrared control motor
Rotary mode,
Liquid crystal display 226, for showing that wireless interference signal is obtained in real time by the liquid crystal display contained by it
Information acquired in unit；
The motor driving triangle body rotary module 210 and the operation module 220 are wirelessly connected.
Below, the radio with reference to a specific Internet of Things radio interference source positioning measurment system embodiment and based on it
The intent of the present invention is explained further in interference source locating measurement method.
A kind of Internet of Things radio interference source positioning measurment system 1000, including at least two devices 200:200A and
200B, and a master controller 300, the master controller 300 collect what MCU unit judges in device 200A and 200B were obtained
The horizontal arrival bearing of maximum signal interference source and the true horizontal position of each device come the final position for determining interference source
Put；Device is wirelessly connected to master controller 300 by 200A and 200B in system.
Based on the radio interference source locating measurement method of Internet of Things radio interference source positioning measurment system 1000, it is special
Levy and be, including：
(1) drive it with the motor of radio interference source positioning measuring device 200A and 200B in infrared remote control activation system
15 rpms of horizontal rotations of rotary unit 360 degree of dynamic device, to obtain interference signal on a large scale；
(2) in regulating system radio interference source positioning measuring device 200A and 200B real time clock unit time base
Standard makes the markers of 200A and 200B devices unified；
(3) radio interference source positioning measuring device 200A and 200B gather current by its 3D magnetic direction respectively in system
Signal is in earth's magnetic field X, Y and the magnetic-field component H of Z-directionxa、Hya、Hza、Hxb、HybAnd Hzb；
(4) radio interference source positioning measuring device 200A and 200B are obtained by its wireless interference signal respectively in system
Unit determines the RSSI value of the current interference signal obtained from rotary unit, and obtains current time index from real time clock unit, will
The RSSI value is combined with markers, and the RSSI value is that wireless interference signal acquiring unit is investigated according to the frequency more than or equal to 10Hz
With calculating gained of being averaged after 5 original RSSI values for obtaining interference signal；
(5) radio interference source positioning measuring device 200A and 200B are read and located by its MCU unit respectively in system
Information obtained by wireless interference signal acquiring unit and 3D magnetic direction collecting units is managed, first judges device A's and device B respectively
Current maximum signal interference source, passes through the magnetic-field component (H ' of correspondence interference sourceXa,H’ya) and (H 'Xb,H’yb) obtain device A
True horizontal position (Xa,Ya) and device B true horizontal position (Xb,Yb), and pass through βi=arctan (H 'yi/H’xi)
Calculate the current maximum signal interference source for obtaining device A and device B and the horizontal sextant angle β in earth's magnetic fieldaAnd βb, wherein
(H’yi,H’xi)=(Xi,Yi)；
(6) peak signal that master controller collection radio interference source positioning measuring device 200A and 200B are drawn respectively is strong
The arrival bearing of interference source and device 200A and 200B true horizontal position are spent, and maximum letter is obtained using the calculating of the following group formula
Number intensity position of interference source (x, y):
Y=tan βax+(ya-tanβaxa),
Y=tan βbx+(yb-tanβbxb)。
Claims (7)
1. a kind of Internet of Things radio interference source measurement apparatus, it is characterised in that including：
Motor drives triangle body rotary module, and the module includes the direct current generator of a table-surface level, and one by three face sizes
Identical directional aerial is mutually in 60 degree of regular triangular prism shape rotary units for setting and constituting, a rotary shaft, a reducing gear
Wheel and a bearing, the rotary shaft are arranged on described rotary unit one end and along along the direction of triangular prism axis, the motor
Main shaft the rotary shaft connected by the reduction gearing and the bearing drive it to horizontally rotate, the rotary unit is used for
It is a wide range of to obtain interference signal；
Module is run, for controlled motor driving triangle body rotary module and the binding analysis processing motor driving triangle body rotation
Signal obtained by the measurement of revolving die block, including：
Real time clock unit, for providing high-precision time reference for device other units and realizing timing function,
3D magnetic direction collecting units, for gathering current demand signal in earth's magnetic field X, Y and the magnetic-field component H of Z-directionx、HyAnd Hz,
Wireless interference signal acquiring unit, the RSSI value for determining the current interference signal that rotary unit is obtained, and from real-time
Clock unit obtains current time index, and the RSSI value is combined with markers,
MCU units, believe obtained by wireless interference signal acquiring unit and 3D magnetic direction collecting units for reading, storing and handle
Breath, first judges current maximum signal interference source, passes through the magnetic-field component (H ' of the interference sourceX,H’y) to obtain the present apparatus exhausted
To horizontal level (X, Y), and pass through β=arctan (H 'y/H’x) calculate obtain current maximum signal interference source and earth magnetism
The horizontal sextant angle β of field, wherein (H 'X,H’y)=(X, Y)；
The motor driving triangle body rotary module and the operation module are connected by wired or wireless way.
2. device according to claim 1, it is characterised in that the operation module also includes infrared remote control unit, is used for
Realize that external command drives the rotary mode of triangle body rotary module by infrared control motor.
3. device according to claim 1 or 2, it is characterised in that the operation module also includes liquid crystal display, is used
In showing the information acquired in wireless interference signal acquiring unit in real time by the liquid crystal display contained by it.
4. a kind of Internet of Things radio interference source positioning measurment system, it is characterised in that appoint including at least two claim 1-3
Device and a master controller described in one, it is exhausted that the master controller collects the device that MCU units are obtained in each device
The final position for determining interference source is come to horizontal level and its maximum signal interference source and the horizontal sextant angle in earth's magnetic field；System
In each device master controller is connected to by wired or wireless mode, wherein preferred wireless is connected.
5. a kind of radio interference source locating measurement method based on system described in claim 4, it is characterised in that including：
(1) radio interference source positioning measuring device i motor revolves the rotary unit level of its drive device in activation system
Turn, to obtain interference signal on a large scale, wherein i is the sequence number of the device in systems；
(2) time reference of radio interference source positioning measuring device i real time clock unit makes each device in regulating system
Markers it is unified；
(3) radio interference source positioning measuring device i gathers current demand signal by its 3D magnetic direction collecting unit respectively in system
X, Y and the magnetic-field component H of Z-direction in earth's magnetic fieldx、HyAnd Hz；
(4) radio interference source positioning measuring device i is determined from rotation by its wireless interference signal acquiring unit respectively in system
Turn the RSSI value of the current interference signal of unit acquisition, and obtain current time index from real time clock unit, by the RSSI value and when
Mark is combined；
(5) radio interference source positioning measuring device i reads and handled respectively wireless interference signal by its MCU unit in system
Information obtained by acquiring unit and 3D magnetic direction collecting units, first judges device i current maximum signal interference source, leads to
Cross the magnetic-field component (H ' of the interference sourceXi,H’yi) obtain device i true horizontal position (Xi,Yi), and pass through βi=
arctan(H’yi/H’xi) calculate the current maximum signal interference source for obtaining device i and the horizontal sextant angle β in earth's magnetic fieldi, wherein
(H’yi,H’xi)=(Xi,Yi)；
(6) master controller collects radio interference source positioning measuring device i true horizontal position (X respectivelyi,Yi) and its it is maximum
Signal intensity interference source and the horizontal sextant angle β in earth's magnetic fieldi, and obtain maximum signal position of interference source using the calculating of the following group formula
(x,y):
Y=tan βnx+(yn-tanβnxn),
Y=tan βmx+(ym-tanβmxm),
Wherein, n ∈ i, m ∈ i, n ≠ m.
6. method according to claim 5, it is characterised in that the horizontal rotation is every with 15 turns centered on rotary shaft
The speed rotation of minute.
7. the method according to claim 5 or 6, it is characterised in that the RSSI value is wireless interference signal acquiring unit
According to calculating gained of being averaged after the frequency investigation more than or equal to 10Hz and 5 original RSSI values of acquisition interference signal.
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