CN109673084A - Dynamic and static human body sense light and its control method based on three-dimensional electric field - Google Patents
Dynamic and static human body sense light and its control method based on three-dimensional electric field Download PDFInfo
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Abstract
A kind of dynamic and static human body sense light and its control method based on three-dimensional electric field, it is related to intelligent power saving control lighting area, sense light includes human body sensing system, control system, lighting system, power-supply system, and human body sensing system includes three-diemsnional electrode sensor, signal source module, signal processor.Method is that signal source module generates stabilization signal load on three-diemsnional electrode sensor, three-diemsnional electrode sensor real-time detection is to X, Y, the electrode signal of Z-direction, the electrode signal is fitted, obtain three-dimensional electric field sensitivity coefficient, coupling sensitivity coefficient matrix is determined again, operation after further doing related denoising to observation electrode signal, obtain electric field level on tri- directions X, Y, Z, again after operation compared with preset threshold, human body is judged whether in sensing region, to control opening or closing for lighting apparatus.The present invention is able to achieve dynamic and static human body induction, has the characteristics that stability is good, discrimination is high, structure is simple, low in energy consumption, use easy to spread.
Description
Technical field
The present invention relates to intelligent power savings to control lighting area, especially a kind of dynamic and static human body induction based on three-dimensional electric field
The control method of lamp.
Background technique
Common human body detection mode has ultrasonic listening, microwave sounding etc. active active and passive infrared (PIR) heat
Release the passive passive-type two major classes such as electrical resistivity survey survey.Ultrasonic wave and microwave human body detection be based on Doppler effect and it is manufactured, can only
The human body for detecting movement, is a kind of dynamic Human Detection, can not detect the human body to remain static.Simultaneously this two
Kind detection mode can generate certain energy radiation, certain injury can be caused to human body under this environment for a long time, no
It is suitable for the requirement of Energy Saving Control.
Static human detection mode mainly has at present: infrared image processing, life detection radar and follow-on pyroelectricity
The modes such as passive infrared detection.Infrared image processing and life detection radar are expensive, are difficult popularization and application to LED illumination section
In can control, follow-on pyroelectricity passive infrared detection, infrared image processing are examined based on being in accordance with human body temperature
It surveys, is easy to be affected by the ambient temperature, when temperature is close to human body temperature, error is very big, cannot achieve in LED energy conservation
It is promoted and applied in illumination.
Authorization Notice No. be CN 103197354B patent of invention " digital passive infrared human body detector and its
Detection method ", a kind of detector and its detection method with passive infrared detection static human body is disclosed, the invention is mainly logical
It crosses rotation Passive Infrared Sensor and realizes movement, while utilizing computing cross-correlation.It has the disadvantage in that (1) passive infrared passes
The principle of sensor detection human body is also based on human body temperature detection, is easy to be affected by the ambient temperature, when temperature is close to human body
When temperature, error is very big；(2) movement is realized by rotation Passive Infrared Sensor, transports Passive Infrared Sensor often
Turn, keep its power consumption very big, structure is complicated, is unable to reach effect conveniently, energy saving；(3) only weakened using computing cross-correlation
Still there is the interference of alien frequencies signal in the interference of homogenous frequency signal；And the normalized crosscorrelation letter obtained by computing cross-correlation
Number Sequence and threshold value compare to realize and judge whether someone, but without specific threshold value, with period control method complexity.
Authorization Notice No. is CN103852649 B patent of invention " the three-dimensional electric field measurement method based on coplanar sensing unit "
It mentions and measures electric field with three-dimensional electric field sensor, coupling sensitivity coefficient matrix is determined based on the sensitivity coefficient of calculating, then with
Direct electric field sensor response signal does data processing, but application condition in this way is big, be easy to be interfered by ambient noise or other
Signal interference, False Rate are high.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of dynamic and static human body sense light and its control based on three-dimensional electric field
Method processed, with solve it is of the existing technology can only detect movement human body and can not detect the human body to remain static,
The shortcoming that structure is complicated, power consumption is big, False Rate is high.
The technical solution for solving above-mentioned technical problem is: a kind of dynamic and static human body sense light based on three-dimensional electric field, including
Control system, lighting system, power-supply system, the output end of power-supply system are connect with control system, lighting system respectively, further include
Human body sensing system, human body induction system include three-diemsnional electrode sensor, signal source module, signal processor；The letter
Number source module is used to generate stabilization signal and loads each electrode in three-diemsnional electrode sensor, three-diemsnional electrode sensor it is defeated
Outlet is connected by signal processor and the input terminal of control system, and the output end of control system and the input terminal of lighting system connect
It connects.
A further technical solution of the present invention is: the three-diemsnional electrode sensor is in X, Y, Z three-dimensional space, often
A directional spreding is symmetrically installed with a pair of electrodes.
A further technical solution of the present invention is: the signal source module generates stable multichannel standard signal, signal voltage
Variable, variable reference voltage 1.8V~5 V, variable frequency range 60kHz~160kHz with frequency-flat.
A further technical solution of the present invention is: the signal processor includes the detection mould being connected in turn
The input terminal of block, amplification module, filter module, detection module is connect with electrode sensor, the output end of filter module and control
System connection.
A further technical solution of the present invention is: the power-supply system includes power-supply system I, power-supply system II, power supply
The output end of system I is connect with human body sensing system, control system respectively, and the output end and lighting system of power-supply system II connect
It connects.
It is of the invention another solution is that a kind of control method of the dynamic and static human body sense light based on three-dimensional electric field,
This method is that the signal source module of human body sensing system generates stabilization signal, and the signal loading is each three-diemsnional electrode sensor
On electrode, the electrode signal of three-diemsnional electrode sensor real-time detection to tri- directions X, Y, Z, control system by the electrode signal into
Row fitting, obtains three-dimensional electric field sensitivity coefficient, then determine its coupling sensitivity coefficient matrix by three-dimensional electric field sensitivity coefficient,
Further done to collected observation electrode signal it is related denoising after operation, obtain electric field level on tri- directions X, Y, Z, then right
X, the electric field in tri- directions Y, Z is done after operation compared with preset threshold, human body is judged whether in sensing region, to control
Lighting apparatus processed being opened or closing.
A further technical solution of the present invention is: method includes the following steps:
S1. the acquisition of ambient noise
In sensing region nobody in the case where ambient noise signal acquired store, the ambient noise sequence of sampling is q (1), q
(2), (3) x ... q (2k-1), q (2k), wherein q (2k) indicates that the 2K sampled point, 2K are the points of sampling；
S2. the sensitivity coefficient sequence of three-dimensional electric field is sought
Apply pumping signal to tri- direction electrodes of X, Y, Z of three-diemsnional electrode sensor, and corresponding output signal is intended
It closes, obtains sensitivity coefficient sequence Px1, Px2, Px3 ... Pxn, Py1, Py2, Py3 ... Pyn of three-dimensional electric field respectively,
Pz1,Pz2,Pz3…Pzn；
S3. the coupling sensitivity coefficient matrix of three-dimensional electric field is determined
According to the sensitivity coefficient sequence of three-dimensional electric field, the coupling sensitivity coefficient matrix of three-dimensional electric field is determined such as
Under:
S4. the acquisition of electrode signal is observed
Acquisition observation electrode signal, the observation electrode signal sequence are x (1), x (2), x (3), x (k-1) ... x (k), wherein x
(k) indicate that k-th sampled point, K are the points of sampling；
S5. electrode signal sequence auto-correlation computation is observed
Auto-correlation computation is carried out to observation electrode signal sequence；
S6. computing cross-correlation
Ambient noise sequence and the observation electrode signal sequence after auto-correlation computation are made into computing cross-correlation, and to X, Y, Z tri-
Electrode signal on a direction makees Correlation method for data processing, the electrode signal sequence f after being denoised1、f2……fn；
S7. the electric field level on tri- directions X, Y, Z is sought
First seek the electric field level on tri- directions X, Y, Z:
,
Operation is done to the electric field in tri- directions X, Y, Z again, obtains space electric field E:
Wherein, Ex, Ey, Ez are respectively the electric field level on tri- directions X, Y, Z, E X, tri- directions Y, Z electric field do operation
The space electric field obtained afterwards, f1、f2……f3For the electrode signal sequence after denoising；
S8. judge in sensing region with the presence or absence of movement or static people
The peak value of space electric field E is judged whether in preset threshold range, if peak value except preset threshold range, exports nothing
People's signal, lighting system are in close state, and repeat step S2；If peak value in preset threshold range, exports
Someone's signal, and control starting lighting system postpones certain time, lighting system until peak value is except preset threshold range
It is automatically closed, repeats step S2.
The further technical solution of the present invention is: in step s 5, carrying out auto-correlation fortune to observation electrode signal sequence
It calculates, operational formula are as follows:
,
Y (t) indicates that t moment observes electrode signal, and y (t+ ψ) indicates that the t+ ψ moment observes electrode signal, and ψ is delay time.
The further technical solution of the present invention is: in step s 6, including step in detailed below:
S61. the energy f of ambient noise sequence is calculatedqq(0):
,
X (t) indicates t-th of ambient noise sampled point；
S62. the energy f of calculating observation electrode signal sequencexx(0):
；
S63. ambient noise sequence and the observation electrode signal sequence after auto-correlation computation are made into computing cross-correlation, operation function
Are as follows:
,
τ is delay time；
S64. Correlation method for data processing is made to the observation electrode signal on tri- directions X, Y, Z:
,
fqy(τ)、fqz(τ) respectively indicates ambient noise sequence signal and Y, the Z-direction observation electrode signal after auto-correlation computation
Sequence makees the function of computing cross-correlation.
The further technical solution of the present invention is: in step s 8, the preset threshold range is 0.3~0.7.
Due to the adoption of the above technical scheme, the dynamic and static human body sense light and its controlling party based on three-dimensional electric field of the present invention
Method compared with prior art, has the advantages that
1. can realize that dynamic and static human body incudes
Due to the dynamic and static human body sense light of the invention based on three-dimensional electric field include control system, lighting system, power-supply system,
Human body sensing system, wherein human body sensing system includes three-diemsnional electrode sensor, signal source module, signal processor；Signal source
Module is used to generate stabilization signal and loads each electrode in three-diemsnional electrode sensor, the output end of three-diemsnional electrode sensor
It is connected by signal processor and the input terminal of control system, the output end of control system and the input terminal of lighting system connect.
The control method of dynamic and static human body sense light based on three-dimensional electric field of the invention is the signal of human body sensing system
Source module generates stabilization signal, and the signal loading is on three-diemsnional electrode sensor, three-diemsnional electrode sensor real-time detection to X, Y, Z
The electrode signal is fitted by the electrode signal in three directions, control system, obtains three-dimensional electric field sensitivity coefficient, then by three
Dimension electric field sensitivity coefficient determines its coupling sensitivity coefficient matrix, further does related go to collected observation electrode signal
Operation after making an uproar, obtains electric field level on tri- directions X, Y, Z, then to the electric field in tri- directions X, Y, Z do after operation with it is default
Threshold value compares, and human body is judged whether in sensing region, to control opening or closing for lighting apparatus.
Therefore, the present invention is based on environment of electric field variation detection dynamic and static human body with the presence or absence of sensing region, when someone exists
When, sensing region electric field can change, and the induction electrode for loading signal changes, cause the variation of capacitor's capacity, from
And cause the variation of voltage, and then detection senses region whether someone, regardless of the people of static people or movement can change sense
Region electric field is known, so being able to achieve dynamic and static human body induction.
2. stability is good, discrimination is high
The electrode signal of three-diemsnional electrode sensor acquisition of the invention includes strong background noise and useful weak electric field signal, is
It can extract useful weak electric field signal, the first electrode signal to tri- directions X, Y, Z of acquisition from strong background noise
It is fitted, obtains three-dimensional electric field sensitivity coefficient, then its coupling sensitivity coefficient square is determined by three-dimensional electric field sensitivity coefficient
Battle array, further does related denoising to collected observation electrode signal, can weaken ambient noise interference significantly.Therefore, of the invention
It is not affected by the ambient temperature, small by ambient noise interference, stability is good, discrimination is high.
3. intelligence degree is high, convenient and practical
Due to the dynamic and static human body sense light based on three-dimensional electric field of the present invention include control system, lighting system, power-supply system,
Human body sensing system, wherein human body sensing system is made of three-diemsnional electrode sensor, signal source module, signal processor, the people
Body induction system can detect automatically with judge sensing region whether presence of people, to realize opening for Automatic Control lighting apparatus
Or close, intelligence degree is high, convenient and practical.
4. structure is simple, low in energy consumption
The dynamic and static human body sense light based on three-dimensional electric field of the present invention includes control system, lighting system, power-supply system, human body
Induction system, wherein human body sensing system is made of three-diemsnional electrode sensor, signal source module, signal processor, structure ratio
It is relatively simple, lower production costs, and often operated without Passive Infrared Sensor, low in energy consumption, use easy to spread.
In the following, in conjunction with the accompanying drawings and embodiments to the dynamic and static human body sense light and its control based on three-dimensional electric field of the present invention
The technical characteristic of method is further described.
Detailed description of the invention
Fig. 1: the system block diagram of the dynamic and static human body sense light based on three-dimensional electric field of the present invention described in embodiment one,
Fig. 2: the system block diagram of human body sensing system described in embodiment one,
Fig. 3: the structural schematic diagram of human body sensing system described in embodiment one.
Specific embodiment
Embodiment one
A kind of dynamic and static human body sense light based on three-dimensional electric field, including power-supply system, human body sensing system, control system, photograph
Bright system, system block diagram are as shown in Figure 1.
The power-supply system includes power-supply system I, power-supply system II, the output end of power-supply system I respectively with human body sense
System, control system connection are answered, the output end of power-supply system II is connect with lighting system.
The human body sensing system includes three-diemsnional electrode sensor, signal source module, signal processor, system block diagram
As shown in Figure 2；Wherein:
For the signal source module signal source module for generating stable multichannel standard signal, signal voltage and frequency-flat can
Become, variable reference voltage 1.8V~5 V, variable frequency range 60kHz~160kHz, the multichannel standard signal are respectively loaded on three
On each electrode for tieing up electrode sensor.
The three-diemsnional electrode sensor is used for real-time perception human body information, and the output end of the three-diemsnional electrode sensor passes through
Signal processor and the input terminal of control system connect, and the three-diemsnional electrode sensor is in X, Y, Z three-dimensional space, often
A directional spreding is symmetrically installed with a pair of electrodes, and electrode is respectively as follows: electrode JX1、JX2、JY1、JY2、JZ1、JZ2(human body sensing system
Structural schematic diagram is referring to Fig. 3).
The signal processor includes the detection module being connected in turn, amplification module, filter module, detection mould
The input terminal of block is connect with electrode sensor, and the output end of filter module and the input terminal of control system connect.
The output end of the control system and the input terminal of lighting system connect, which is used for signal processing
Device transmission come signal and preset threshold compare, judge the signal sensed whether presence of people, and then control lighting system
Switch.
Embodiment two
A kind of control method of the dynamic and static human body sense light based on three-dimensional electric field, this method is the signal source of human body sensing system
Module generates stabilization signal, and the signal loading is on three-diemsnional electrode sensor, three-diemsnional electrode sensor real-time detection to X, Y, Z tri-
The electrode signal is fitted by the electrode signal in a direction, control system, obtains three-dimensional electric field sensitivity coefficient, then by three-dimensional
Electric field sensitivity coefficient determines its coupling sensitivity coefficient matrix, further does related denoising to collected observation electrode signal
Operation afterwards, obtains electric field level on tri- directions X, Y, Z, then to the electric field in tri- directions X, Y, Z do after operation with default threshold
Value compares, and human body is judged whether in sensing region, to control opening or closing for lighting apparatus.
Method includes the following steps:
S1. the acquisition of ambient noise
In sensing region nobody in the case where ambient noise signal acquired store, the ambient noise sequence of sampling is q (1), q
(2), (3) x ... q (2k-1), q (2k), wherein q (2k) indicates that the 2K sampled point, 2K are the points of sampling；Ambient noise sequence
The points of column sampling are 2k, are twice of observation electrode signal of acquisition, are to make the signal frequency after correlation and useful signal
Frequency is consistent, improves the precision of detection signal；
S2. the sensitivity coefficient sequence of three-dimensional electric field is sought
Apply pumping signal to tri- direction electrodes of X, Y, Z of three-diemsnional electrode sensor, and corresponding output signal is intended
It closes, obtains sensitivity coefficient sequence Px1, Px2, Px3 ... Pxn, Py1, Py2, Py3 ... Pyn of three-dimensional electric field respectively,
Pz1,Pz2,Pz3…Pzn；
S3. the coupling sensitivity coefficient matrix of three-dimensional electric field is determined
According to the sensitivity coefficient sequence of three-dimensional electric field, the coupling sensitivity coefficient matrix of three-dimensional electric field is determined such as
Under:
S4. the acquisition of electrode signal is observed
Acquisition observation electrode signal, the observation electrode signal sequence are x (1), x (2), x (3), x (k-1) ... x (k), wherein x
(k) indicate that k-th sampled point, K are the points of sampling；
S5. electrode signal sequence auto-correlation computation is observed
Auto-correlation computation, operational formula are carried out to observation electrode signal sequence are as follows:
,
Y (t) indicates that t moment observes electrode signal, and y (t+ ψ) indicates that the t+ ψ moment observes electrode signal, and ψ is delay time；
S6. computing cross-correlation
Ambient noise sequence and the observation electrode signal sequence after auto-correlation computation are made into computing cross-correlation, and to X, Y, Z tri-
Electrode signal on a direction makees Correlation method for data processing, the electrode signal sequence f after being denoised1、f2……fn；
S7. the electric field level on tri- directions X, Y, Z is sought
First seek the electric field level on tri- directions X, Y, Z:
,
Operation is done to the electric field in tri- directions X, Y, Z again, obtains space electric field E:
Wherein, Ex, Ey, Ez are respectively the electric field level on tri- directions X, Y, Z, E X, tri- directions Y, Z electric field do operation
The space electric field obtained afterwards, f1、f2……f3For the electrode signal sequence after denoising；
S8. judge in sensing region with the presence or absence of movement or static people
Judge the peak value of space electric field E whether in preset threshold range 0.3~0.7, if peak value preset threshold range it
Outside, unmanned signal is exported, lighting system is in close state, and repeats step S2；If peak value is in preset threshold range
It is interior, then someone's signal is exported, and control starting lighting system, until peak value is except preset threshold range, postpones certain time,
Lighting system is automatically closed, and repeats step S2.
In step s 6, including in detailed below step:
S61. the energy f of ambient noise sequence is calculatedqq(0):
,
X (t) indicates t-th of ambient noise sampled point；
S62. the energy f of calculating observation electrode signal sequencexx(0):
,
y2(t) square of the electrode signal of t moment sampling, y are indicated2The electrode signal of (t+ ψ) expression t+ ψ instance sample
Square；
S63. ambient noise sequence and the observation electrode signal sequence after auto-correlation computation are made into computing cross-correlation, operation function
Are as follows:
,
τ is delay time；
S64. Correlation method for data processing is made to the observation electrode signal on tri- directions X, Y, Z:
,
fqy(τ)、fqz(τ) respectively indicates ambient noise sequence signal and Y, the Z-direction observation electrode signal after auto-correlation computation
Sequence makees the function of computing cross-correlation.
Claims (10)
1. a kind of dynamic and static human body sense light based on three-dimensional electric field, including control system, lighting system, power-supply system, power supply
The output end of system is connect with control system, lighting system respectively；It is characterized by also including human body sensing system, the human bodies
Induction system includes three-diemsnional electrode sensor, signal source module, signal processor；The signal source module is for generating stabilization
Signal simultaneously loads on each electrode of three-diemsnional electrode sensor, the output end of three-diemsnional electrode sensor by signal processor with
The input terminal of control system connects, and the output end of control system and the input terminal of lighting system connect.
2. the dynamic and static human body sense light according to claim 1 based on three-dimensional electric field, it is characterised in that: the three-dimensional
For electrode sensor in X, Y, Z three-dimensional space, each directional spreding is symmetrically installed with a pair of electrodes.
3. the dynamic and static human body sense light according to claim 1 based on three-dimensional electric field, it is characterised in that: the signal
Source module generates stable multichannel standard signal, and signal voltage and frequency-flat are variable, and the V of variable reference voltage 1.8V~5 can
Frequency range 60kHz~160kHz.
4. the dynamic and static human body sense light according to claim 1 based on three-dimensional electric field, it is characterised in that: the signal
Processor includes the detection module being connected in turn, amplification module, filter module, and the input terminal and electrode of detection module pass
Sensor connection, the output end of filter module are connect with control system.
5. the dynamic and static human body sense light according to claim 1 based on three-dimensional electric field, it is characterised in that: the power supply
System includes power-supply system I, power-supply system II, and the output end of power-supply system I connects with human body sensing system, control system respectively
It connects, the output end of power-supply system II is connect with lighting system.
6. a kind of control method of the dynamic and static human body sense light based on three-dimensional electric field, it is characterised in that: this method is human body sense
The signal source module of system is answered to generate stabilization signal, the signal loading is on each electrode of three-diemsnional electrode sensor, three-dimensional electricity
To the electrode signal in tri- directions X, Y, Z, which is fitted pole sensor real-time detection by control system, obtains three
Tie up electric field sensitivity coefficient, then its coupling sensitivity coefficient matrix determined by three-dimensional electric field sensitivity coefficient, further with acquisition
To observation electrode signal do operation after related denoising, obtain electric field level on tri- directions X, Y, Z, then to tri- sides X, Y, Z
To electric field do after operation compared with preset threshold, human body is judged whether in sensing region, to control lighting apparatus
Open or close.
7. the control method of the dynamic and static human body sense light according to claim 6 based on three-dimensional electric field, it is characterised in that:
Method includes the following steps:
S1. the acquisition of ambient noise
In sensing region nobody in the case where ambient noise signal acquired store, the ambient noise sequence of sampling is q (1), q
(2), (3) x ... q (2k-1), q (2k), wherein q (2k) indicates that the 2K sampled point, 2K are the points of sampling；
S2. the sensitivity coefficient sequence of three-dimensional electric field is sought
Apply pumping signal to tri- direction electrodes of X, Y, Z of three-diemsnional electrode sensor, and corresponding output signal is intended
It closes, obtains sensitivity coefficient sequence Px1, Px2, Px3 ... Pxn, Py1, Py2, Py3 ... Pyn of three-dimensional electric field respectively,
Pz1,Pz2,Pz3…Pzn；
S3. the coupling sensitivity coefficient matrix of three-dimensional electric field is determined
According to the sensitivity coefficient sequence of three-dimensional electric field, the coupling sensitivity coefficient matrix of three-dimensional electric field is determined such as
Under:
S4. the acquisition of electrode signal is observed
Acquisition observation electrode signal, the observation electrode signal sequence are x (1), x (2), x (3), x (k-1) ... x (k), wherein x
(k) indicate that k-th sampled point, K are the points of sampling；
S5. electrode signal sequence auto-correlation computation is observed
Auto-correlation computation is carried out to observation electrode signal sequence；
S6. computing cross-correlation
Ambient noise sequence and the observation electrode signal sequence after auto-correlation computation are made into computing cross-correlation, and to X, Y, Z tri-
Electrode signal on a direction makees Correlation method for data processing, the electrode signal sequence f after being denoised1、f2……fn；
S7. the electric field level on tri- directions X, Y, Z is sought
First seek the electric field level on tri- directions X, Y, Z:
,
Operation is done to the electric field in tri- directions X, Y, Z again, obtains space electric field E:
Wherein, Ex, Ey, Ez are respectively the electric field level on tri- directions X, Y, Z, E X, tri- directions Y, Z electric field transport
The space electric field obtained after calculation, f1、f2……fnFor the electrode signal sequence after denoising；
S8. judge in sensing region with the presence or absence of movement or static people
The peak value of space electric field E is judged whether in preset threshold range, if peak value except preset threshold range, exports nothing
People's signal, lighting system are in close state, and repeat step S2；If peak value in preset threshold range, exports
Someone's signal, and control starting lighting system postpones certain time, lighting system until peak value is except preset threshold range
It is automatically closed, repeats step S2.
8. the control method of the dynamic and static human body sense light according to claim 7 based on three-dimensional electric field, it is characterised in that:
In step s 5, auto-correlation computation, operational formula are carried out to observation electrode signal sequence are as follows:
,
Y (t) indicates that t moment observes electrode signal, and y (t+ ψ) indicates that the t+ ψ moment observes electrode signal, and ψ is delay time.
9. the control method of the dynamic and static human body sense light according to claim 8 based on three-dimensional electric field, it is characterised in that:
In step s 6, including in detailed below step:
S61. the energy f of ambient noise sequence is calculatedqq(0):
,
X (t) indicates t-th of ambient noise sampled point；
S62. the energy f of calculating observation electrode signal sequencexx(0):
；
S63. ambient noise sequence and the observation electrode signal sequence after auto-correlation computation are made into computing cross-correlation, operation function
Are as follows:
,
τ is delay time；
S64. Correlation method for data processing is made to the observation electrode signal on tri- directions X, Y, Z:
,
fqy(τ)、fqz(τ) respectively indicates ambient noise sequence signal and Y, the Z-direction observation electrode signal after auto-correlation computation
Sequence makees the function of computing cross-correlation.
10. the control method of the dynamic and static human body sense light according to claim 7 based on three-dimensional electric field, feature exist
In: in step s 8, the preset threshold range is 0.3~0.7.
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