CN110232880A - A method of optical cable marker peg and intelligent early-warning with intelligent early-warning function - Google Patents
A method of optical cable marker peg and intelligent early-warning with intelligent early-warning function Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 90
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- 238000001228 spectrum Methods 0.000 claims description 82
- 230000002123 temporal effect Effects 0.000 claims description 30
- 238000004891 communication Methods 0.000 claims description 22
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- 238000005265 energy consumption Methods 0.000 abstract description 11
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
- G09F27/004—Displays including an emergency or alarm message
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
- G09F27/005—Signs associated with a sensor
Abstract
The present invention relates to a kind of method of optical cable marker peg and intelligent early-warning with intelligent early-warning function, including mark pile body, marker peg body interior is cavity structure, and the cavity wall of cavity is equipped with aperture；It further include the monitoring control unit module being installed in mark pile body, power module, alarm module, power module is electrically connected with monitoring control unit module, and alarm module is connect with monitoring control unit module by signal；It further include multiple acceleration transducers outside mark pile body, acceleration transducer is connect with monitoring control unit module by signal.The real-time vibration signal that monitoring control unit module acquires acceleration transducer is compared with the characteristic value of preset sample signal, judges that alarm module is warned, and prevents pedestrian or vehicle from damaging to neighbouring optical cable.The present apparatus is small in size, structure is simple, and low energy consumption, is quick on the draw, and timely and effective can play the role of early warning, avoid damaging optical cable.
Description
Technical field
The present invention relates to monitoring instrument fields, and in particular to a kind of optical cable marker peg and intelligence with intelligent early-warning function
The method of early warning.
Background technique
Buried optical cable is embedded in underground, when other staff do not know optical cable arrangement situation herein, is easy to make optical cable
At accidental destruction (such as the vehicle passed by damages by pressure, construction machinery damages), once cause optical cable to destroy, it will usually it generates
Huge loss.Usually used optical cable marker peg is a concrete stake, red prompting printed words is printed with thereon, by close
The eye recognition of personnel achieve the purpose that prompting, cannot personnel or vehicle etc. close to when carry out in advance it is effective pre-
It is alert, the effect that prevention optical cable is destroyed well is not achieved.
Summary of the invention
The present invention for the technical problems in the prior art, provides a kind of optical cable mark with intelligent early-warning function
The method of stake and intelligent early-warning, marker peg is small in size, structure is simple, and low energy consumption, is quick on the draw, and timely and effective can play early warning
Effect, avoid damaging optical cable.
The technical scheme to solve the above technical problems is that
A kind of optical cable marker peg with intelligent early-warning function, including indicate pile body, the marker peg body interior is
Cavity structure, the cavity wall of the cavity are equipped with aperture, this marker peg further includes the monitoring being installed in the mark pile body
Control unit module, power module, alarm module, the power module is electrically connected with the monitoring control unit module, described
Alarm module is connect with the monitoring control unit module by signal；It further include multiple acceleration outside the mark pile body
Sensor, the acceleration transducer are connect with the monitoring control unit module by signal；
The power module provides power supply；
Multiple acceleration transducers acquire real-time vibration signal；
Power spectrum, the power spectrum that the category signal as sample value is prestored in the monitoring control unit module are average
Value, the monitoring control unit module extract characteristic value to the real-time vibration signal, judge the class of the real-time vibration signal
Type, and the power spectrum of the real-time vibration signal, power spectrum average value are calculated, the power spectrum of the real-time vibration signal is averaged
It is worth and is compared, judges with the power spectrum average value prestored, and alarm signal is exported according to judging result；
The alarm module carries out the alarm of corresponding alarm signal.
Using above technical scheme, multiple acceleration transducers, monitoring control unit module, alarm module constitute alarm control
System processed, power module provide working power for the alarm control system.Multiple acceleration transducers are mounted near optical cable
Subsurface, near optical cable when vibration without exception, monitoring control unit module does not issue alarm signal, alarm module not work
Make, it is low in energy consumption；It is stored in monitoring control unit module special as referential vibration sample signal temporal signatures value and frequency domain
Signal is divided into pedestrian's walk signal (personnel's row according to the Zero-crossing Number in temporal signatures value by value indicative and calculated power spectrum
The vibration signal walked), vehicle driving signal (comprising vehicle driving and construction machinery signal), and be stored in corresponding data respectively
In library.When people or vehicle are close or nearby when constructing, optical cable nearby generates abnormal vibration, and multiple acceleration pass
Sensor, which vibrates scene, carries out real-time sampling, and the physical signal sampled is converted to electric signal and is transmitted to monitoring control unit
Module monitors control unit module for vibration sample signal characteristic value (Zero-crossing Number, function of the real-time vibration signal of sampling and storage
Rate spectrum, power spectrum average value) it is compared, classifies, judges, if the comparison knot of vibration signal value and vibration sample signal in real time
Fruit reaches alert if, monitors control unit module according to classification (pedestrian's walk signal or the vehicle row of real-time vibration signal
Sail signal) alarm signal is exported respectively to alarm module, alarm module carries out early warning, carries out level-one to pedestrian's walk signal
Warning indicators carry out second level warning indicators to vehicle driving signal, remind neighbouring personnel to have optical cable herein, pay attention to avoiding damage to
Optical cable.This mark pilework is simple, and low energy consumption, is quick on the draw, and timely and effective can play the role of early warning, avoid causing optical cable
It destroys.
Preferably, multiple acceleration transducers are arranged in array.Multiple acceleration transducers are in around optical cable
Array arrangement can monitor the vibration variation near optical cable more accurately.
Preferably, the power module includes solar panel, small battery and power management chip, the sun
Energy solar panel is mounted on the marker peg body outer surface, and the small battery and the power management chip are mounted on described
In the intrinsic cavity of marker peg；The solar panel is electrically connected with the small battery, the small battery with
The power management chip electrical connection, the power management chip are electrically connected with the monitoring control unit module.Solar-electricity
Pond plate is preferably mounted at marker peg bodies top outer surface, convenient for farthest receiving solar energy.Solar panel will
Solar energy is converted to electric energy and is stored in small battery, and small battery provides power supply for entire marker peg live part.This
Low energy consumption for marker peg, using the electric energy that solar panel is converted is enough that this marker peg is supported to be worked normally；Work as solar energy
When sufficient, extra electric energy is stored in small battery, for continuing as the power supply of this marker peg when solar energy deficiency.Mark
Stake is often provided on the field environment of no supervision, and the setting of this power module does not need to provide additional electricity for this marker peg
Source substantially increases the applicability of this marker peg.
Preferably, the alarm module includes alerting loudspeaker and warning lamp, the alarm loudspeaker and the warning lamp
Be separately mounted to it is described mark pile body in and with it is described mark pile body on aperture cooperate, the alarm loudspeaker with it is described
Warning lamp is connect with the monitoring control unit module by signal respectively.When monitoring control unit module exports alarm signal to warning
When module, alarm loudspeaker plays preset prompt tone, while warning lamp is bright or flashes, and has herein with the personnel near reminding
Optical cable prevents from causing unexpectedly to destroy to optical cable.Sound is reminded with light cooperation, is reminded than tradition by eye recognition
More effectively.
Preferably, wireless communication module, the wireless communication module and the monitoring are additionally provided in the mark pile body
The connection of control unit module by signal, the wireless communication module are also electrically connected with the power management chip.The wireless communication
Module is communicated to connect by wireless network and host computer.When the abnormal vibrations triggering alarm that this monitoring control unit module monitors arrive
When, wireless communication module by this monitoring control unit module monitors to abnormal vibrations data be sent to by wireless network it is upper
Machine, monitoring personnel understand the state of each marker peg in host computer in time.Monitoring personnel can be remote by wireless network in host computer
The unlatching and closing alarm of each marker peg of process control.The status information of each component part of this monitoring control unit module simultaneously
It is sent to host computer, is convenient for the timely discovering device failure of monitoring personnel (such as battery capacity deficiency etc.).
Preferably, audio collection module, the audio collection module and the prison are also equipped in the mark pile body
The connection of observing and controlling unit module signal.When triggering alarm, audio collection module acquires the voice signal near marker peg, passes through nothing
Line communication module is sent to host computer, understands the actual conditions at marker peg convenient for monitoring personnel.Simultaneously when service personnel reaches
When being overhauled at marker peg, audio collection module and alarm loudspeaker cooperation can be with the realizations pair of the audio frequency apparatus on host computer
Say function, easy access personnel link up in time with monitoring personnel.
Preferably, the audio collection module is sound pick-up.Sound pick-up collection site sound receives sound vibrations, by sound
Sound signal is converted to electric signal and is sent to monitoring control unit module.
Preferably, image capture module, described image acquisition module and the prison are also equipped in the mark pile body
The connection of observing and controlling unit module signal.When triggering alarm, image capture module collection site image, and live image is converted
It is digital data transmission to monitoring control unit module, module is sent to host computer by wireless communication, is convenient for monitoring personnel
The actual conditions of Xie Biaozhizhuanchu.
Preferably, described image acquisition module is camera.Camera can be captured or be recorded to live image.
According to the method for the intelligent early-warning of marker peg described above, include the following steps,
Real-time vibration signal is acquired, waveform processing is carried out to real-time vibration signal, and it is special to extract its temporal signatures value, frequency domain
Value indicative；
The type of the real-time vibration signal is judged according to the temporal signatures value of real-time vibration signal；
The power spectrum that the real-time vibration signal is calculated according to the frequency domain character value of real-time vibration signal, then calculates
Its power spectrum average value；
For different type vibration signal, its power spectrum average value is compared with the sample value that preparatory training obtains and is sentenced
It is disconnected, alarm signal is exported according to judging result.
Preferably, the training process of the sample value includes:
Waveform processing is carried out to multiple sample signals, extracts its temporal signatures value, frequency domain character value；
Zero-crossing Number is calculated according to the temporal signatures value of multiple sample signals, the sample is judged according to Zero-crossing Number size
The type of this signal；
The power spectrum that multiple sample signals are calculated according to the frequency domain character value of multiple sample signals, is then counted
Calculate its power spectrum average value；
For different types of vibration signal, by its temporal signatures value, frequency domain character value, power spectrum, power spectrum average value
Carry out classification storage.
Preferably, the temporal signatures value according to real-time vibration signal judges the type of the real-time vibration signal,
Including calculating Zero-crossing Number according to the temporal signatures value of real-time vibration signal, judging the real-time vibration according to Zero-crossing Number size
The type of signal.
Preferably, power spectrum and power spectrum average value are calculated using the overlapping method of average of weighting, comprising:
By signal value xN(n) it is divided into M sections, obtains block signal value xN·i(n), it is overlapped each section of part signal value；So
Segment signal value each in the single sampling period is smoothed using window function afterwards；Secondly, to each section of power spectrumIt is averaging, obtains power spectrum average valueIf the length of all block signal values is all L, and stipulated that every
Segment data overlappingThen signal value xN(n) total length is
It is calculated by the following formula and obtains power spectrumAnd power spectrum average value
xN·i(n)=xN[n+(i-1)L]w(n) (3)
In formula, 0≤n≤L-1,1≤i≤M；W (n) is window function.
The beneficial effects of the present invention are: this marker peg is small in size, structure is simple, low energy consumption, is quick on the draw, can be timely and effective
Play the role of early warning, avoids damaging optical cable；It is energized using solar energy, without being additionally provided power supply, while environmentally friendly
Increase the applicability of this marker peg；The setting of wireless communication module enables monitoring personnel remotely to understand marker peg everywhere immediately
State, coped in time when exception occur；The setting of audio collection module and image capture module, passes through monitoring personnel
Sound with image is more acurrate, intuitively understands each marker peg and the state of marker peg attachment optical cable.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is control principle drawing of the present invention；
Fig. 3 is pedestrian's walking waveform diagram in the present invention；
Fig. 4 is vehicle driving waveform diagram in the present invention；
Fig. 5 is pedestrian's walk signal power spectrum chart of the present invention；
Fig. 6 is vehicle driving signal power spectrogram of the present invention；
Fig. 7 is sample of the present invention signal processing flow figure；
Fig. 8 is present invention vibration signal processing flow chart in real time.
In attached drawing, parts list represented by the reference numerals are as follows:
1, mark pile body, 2, monitoring control unit module, 201, acceleration transducer, 202, wireless communication module, 3,
Power module, 301, solar panel, 302, small battery, 303, power management chip, 4, audio collection module, 5, figure
As acquisition module, 6, alarm module, 601, alarm loudspeaker, 602, warning lamp, 7, host computer, 8, ground.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Fig. 1~2, a kind of optical cable marker peg with intelligent early-warning function is mounted near optical cable, especially suitable
In the occasion of field no supervision.It includes mark pile body 1, and mark 1 lower part of pile body embedment ground 8 is hereinafter, with fixed mark
The position of will stake.Indicate to be cavity structure inside pile body 1, the cavity wall of the cavity is equipped with multiple apertures；This marker peg is also
Including being installed on the monitoring control unit module 2 indicated in pile body 1, power module 3, alarm module 6, power module 3 and prison
Observing and controlling unit module 2 is electrically connected, and alarm module 6 is connect with monitoring 2 signal of control unit module；This marker peg further includes being set to
Indicate that multiple acceleration transducers 201 outside pile body 1, acceleration transducer 201 and monitoring 2 signal of control unit module connect
It connects；
The power module 3 provides power supply for the live part of entire marker peg；
Multiple acceleration transducers 201 acquire real-time vibration signal and are transported to the monitoring control unit module 2
In；
Power spectrum, the power spectrum that the category signal as sample value is prestored in the monitoring control unit module 2 are average
Value, the monitoring control unit module 2 extract characteristic value to the real-time vibration signal, judge the class of the real-time vibration signal
Type, and the power spectrum of the real-time vibration signal, power spectrum average value are calculated, the power spectrum of the real-time vibration signal is averaged
It is worth and is compared, judges with the power spectrum average value prestored, and alarm signal is exported according to judging result；
Specifically, being equipped in database A and database B, database A and database B in the monitoring control unit module 2
Prestore the signal and its characteristic value of classification.More specifically, pedestrian's walk signal as sample value is stored in database A
Temporal signatures value, frequency domain character value and calculated power spectrum, power spectrum average value are stored as sample in database B
Temporal signatures value, frequency domain character value and calculated power spectrum, the power spectrum average value of the vehicle driving signal of value.Vehicle
The vibration signal that running signal is defaulted as vehicle driving or construction machinery generates.2 pairs of control unit module acquisitions of the monitoring
The real-time vibration signal extracts temporal signatures value, frequency domain character value, calculates the mistake in a sampling period in temporal signatures value
Zero number, the type of the real-time vibration signal is judged by Zero-crossing Number；Zero-crossing Number threshold value is set as 110, if vibration in real time
The Zero-crossing Number of signal is then determined as pedestrian's walk signal, i.e. letter of the pedestrian in the vibration of cable attachment walking generation less than 110
Number；If the Zero-crossing Number of real-time vibration signal is not less than 110, then it is determined as vehicle driving signal, i.e. vehicle driving or construction
The vibration signal that machinery generates near optical cable.The power spectrum and function of the real-time vibration signal are calculated by frequency domain character value
Rate composes average value, and the power spectrum average value as sample value prestored in pedestrian's walk signal and database A is compared, simultaneously time
Go through all power spectrum average values as sample value in database A, what is prestored in vehicle driving signal and database B is used as sample
The power spectrum average value of this value is compared and all power spectrum average values as sample value in the B of ergodic data library；Work as reality
When vibration signal power spectrum average value be greater than or equal to correspondence database in prestore any power spectrum average value when, output police
Show signal.Level-one alarm signal is exported for the judgement result of pedestrian's walk signal, for the judgement result of vehicle driving signal
Export second level alarm signal.
The alarm module 6 carries out the alarm for corresponding to pedestrian's walk signal or the vehicle driving signal, to pedestrian
Walk signal carries out level-one warning indicators, carries out second level warning indicators to vehicle driving signal, neighbouring personnel is reminded to have herein
Optical cable pays attention to avoiding damage to optical cable.
Using above technical scheme, multiple acceleration transducers 201, monitoring control unit module 2, alarm module 6 are constituted
Alarm control system, power module 3 provide working power for the alarm control system.Multiple acceleration transducers 201 are mounted on
Subsurface near optical cable, near optical cable when vibration without exception, monitoring control unit module 2 does not issue alarm signal, alert
Show that module 6 does not work, it is low in energy consumption；It is stored in monitoring control unit module 2 special as referential vibration sample signal time domain
Value indicative and frequency domain character value and calculated power spectrum will vibrate sample signal point according to the Zero-crossing Number in temporal signatures value
For the pedestrian's walk signal vibration signal of walking (personnel), vehicle driving signal (vehicle driving and construction machinery signal), and
It respectively corresponds in deposit database A or database B.When people or vehicle are close or nearby when constructing, optical cable is nearby produced
Raw abnormal vibration, the 201 pairs of scene vibrations of multiple acceleration transducers carry out real-time sampling, the physical signal sampled are converted
For electric signal and it is transmitted to monitoring control unit module 2, monitoring control unit module 2 is by the real-time vibration signal of sampling and stores
Vibration sample signal characteristic value (Zero-crossing Number, power spectrum) be compared, classify, judge, if in real time vibration signal value and vibration
The comparison result of dynamic sample signal reaches alert if, monitors control unit module 2 according to the classification (pedestrian of real-time vibration signal
Walk signal or vehicle driving signal) for output alarm signal to alarm module 6, alarm module 6 carries out early warning, right respectively
Pedestrian's walk signal carry out level-one warning indicators, to vehicle driving signal carry out second level warning indicators, remind neighbouring personnel this
There is optical cable at place, pays attention to avoiding damage to optical cable.This mark pilework is simple, and low energy consumption, is quick on the draw, and timely and effective can play early warning
Effect, avoid damaging optical cable.The difference of level-one warning indicators and second level warning indicators is the voice of warning indicators
Content and speech frequency are different.
In the present embodiment, multiple 201 circular array of acceleration transducer arrangements.Multiple acceleration transducers 201 surround
The arrangement of optical cable circular array can monitor the vibration variation near optical cable more accurately.Using acceleration transducer array
Composition signal acquisition unit samples scene vibration and noise and vibration, and by monitoring control unit module 2 to personnel and
The screening (being carried out by the comparison of the characteristic value of vibration signal value and sample signal to sampling) in the potential dangers such as vehicle source,
And judge whether danger source is more than security level.If being more than that security level triggers alarm mode, reported by alarm module 6
It is alert.
In the present embodiment, power module 3 includes solar panel 301, small battery 302 and power management chip
303, solar panel 301 is mounted on mark 1 outer surface of pile body, and small battery 302 and power management chip 303 are installed
In the cavity in mark pile body 1；Solar panel 301 is electrically connected with small battery 302, small battery 302 with
The power management chip 303 connects, and the power management chip 303 is electrically connected with monitoring control unit module 2, is this mark
Each module for power supply in stake.Solar panel 301 is preferably mounted at mark 1 outer surface of cupular part of pile body, convenient for farthest
Receive solar energy.Solar panel 301 converts the solar into electric energy and is stored in small battery 302, small-sized electric power storage
Pond 302 provides power supply for entire marker peg live part.Low energy consumption for this marker peg, the electricity converted using solar panel 301
Can be enough that this marker peg is supported to be worked normally；When solar energy abundance, extra electric energy is stored in small battery 302
It is interior, for continuing as the power supply of this marker peg when solar energy deficiency.Marker peg is often provided on the field environment of no supervision, this
The setting of power module 3 does not need to provide additional power supply for this marker peg, substantially increases the applicability of this marker peg.
Whole system uses automatic dormancy/awaking operating mode, can be from sleeping when acceleration transducer is after detecting dynamic acceleration
It is automatically waken up in sleep mode, and interrupt notification monitoring 2 startup program of control unit module operation, to reduce power consumption, improve continuation of the journey
Ability.
In the present embodiment, alarm module 6 includes alarm loudspeaker 601 and warning lamp 602, alerts loudspeaker 601 and warning
Lamp 602 is separately mounted in mark pile body 1 and cooperates with the aperture in mark pile body 1, alerts loudspeaker 601 and warning lamp
602 connect with monitoring 2 signal of control unit module respectively.When monitoring control unit module 2 exports alarm signal to alarm module 6
When, alarm loudspeaker 601 plays preset prompt tone, while warning lamp 602 is bright or flashes, to remind neighbouring personnel herein
There is optical cable, prevents that optical cable is caused unexpectedly to destroy.Sound is reminded with light cooperation, is mentioned than tradition by eye recognition
It wakes up more effective.The multiple warning lamps 602 being looped around on marker peg are preferably provided, make warning lamp 602 when alarming from marker peg week
Any angle for enclosing it can be seen that.
In the present embodiment, indicate and be additionally provided with wireless communication module 202 in pile body 1, wireless communication module 202 and monitoring are controlled
2 signal of unit module connection processed, the wireless communication module 202 are also electrically connected with the power management chip 303.Wireless communication
Module 202 is communicated to connect by wireless network and host computer 7.It is preferable to use 4G networks for wireless network.When this monitoring control module 2
When the abnormal transient vibration signal triggering alarm monitored, the exception that wireless communication module 202 monitors this monitoring control module 2 is shaken
Dynamic data are sent to host computer 7 by wireless network, and monitoring personnel understands the state of each marker peg in host computer 7 in time.Prison
Control personnel can remotely control the unlatching of each marker peg by wireless network in host computer 7 and close alarm.This mark simultaneously
The status information of each component part of stake is sent to host computer 7, convenient for the timely discovering device failure of monitoring personnel (such as battery capacity
Deficiency etc.), so as to on-call maintenance.
In the present embodiment, indicate and be also equipped with audio collection module 4 in pile body 1, audio collection module 4 and monitoring control
The connection of 2 signal of unit module.When triggering alarm, audio collection module 4 acquires the voice signal near marker peg, passes through channel radio
Letter module 202 is sent to host computer, understands the actual conditions at marker peg convenient for monitoring personnel.Simultaneously when service personnel is to up to standard
When being overhauled at will stake, audio collection module 4 and alarm loudspeaker 601 cooperate, and can realize with the audio frequency apparatus on host computer 7
Intercommunication function, easy access personnel link up in time with monitoring personnel.
In the present embodiment, audio collection module 4 is sound pick-up.Sound pick-up collection site sound receives sound vibrations, by sound
Sound signal is converted to electric signal and is sent to monitoring control unit module 2, and monitoring control unit module 2 again passes through sound electric signal
Wireless communication module 202 is sent to host computer.
In the present embodiment, indicate and be also equipped with image capture module 5 in pile body 1, image capture module 5 and monitoring control
The connection of 2 signal of unit module.When triggering alarm, 5 collection site image of image capture module, and number is converted by live image
Word signal is transferred to monitoring control unit module 2, and module 202 is sent to host computer by wireless communication, is convenient for monitoring personnel
The actual conditions of Xie Biaozhizhuanchu.At least two image capture modules 5 are preferably provided, so that the range of Image Acquisition covers mark
Any one circumferential angle of will stake.
In the present embodiment, image capture module 5 is camera.Camera can be captured or be recorded to live image
System, and picture signal is transmitted to monitoring control unit module 2 and is handled.
According to the method for the intelligent early-warning of marker peg described above, as illustrated in the flowchart of Figure 8, include the following steps,
Real-time vibration signal is acquired, waveform processing is carried out to real-time vibration signal using matlab, and extract its time domain spy
Value indicative, frequency domain character value；
The type of the real-time vibration signal is judged according to the temporal signatures value of real-time vibration signal；
The power spectrum that the real-time vibration signal is calculated according to the frequency domain character value of real-time vibration signal, then calculates
Its power spectrum average value；
For different type vibration signal, its power spectrum average value is compared with the sample value that preparatory training obtains and is sentenced
It is disconnected, alarm signal is exported according to judging result.
Preferably, as shown in a flowchart of fig. 7, the training process of the sample value includes:
Waveform processing is carried out to multiple sample signals using matlab, extracts its temporal signatures value, frequency domain character value；
Zero-crossing Number is calculated according to the temporal signatures value of multiple sample signals, the sample is judged according to Zero-crossing Number size
The type of this signal；
The power spectrum that multiple sample signals are calculated according to the frequency domain character value of multiple sample signals, is then counted
Calculate its power spectrum average value；
For different types of vibration signal, by its temporal signatures value, frequency domain character value, power spectrum, power spectrum average value
Carry out classification storage.
Preferably, the temporal signatures value according to real-time vibration signal judges the type of the real-time vibration signal,
Including calculating Zero-crossing Number according to the temporal signatures value of real-time vibration signal, judging the real-time vibration according to Zero-crossing Number size
The type of signal.
Zero-crossing Number is the important feature of signal identification in the time domain.Zero-crossing Number refers to the amplitude of time-domain signal in certain a period of time
It is worth the total degree Jing Guo specific threshold, uses this number as the temporal signatures of vibration signal.The Zero-crossing Number and sample rate of signal
Closely related, herein certain refers to any one sampling period to real-time vibration signal for a period of time.Signal sample rate not
In the case where change, the frequency of Zero-crossing Number and signal has direct relation.If the frequency of certain sinusoidal signal is f, Zero-crossing Number is
N=kf (1)
I.e. Zero-crossing Number is directly proportional to frequency, and k is proportionality coefficient.
Zero-crossing Number is unrelated with signal amplitude, and anti-interference ability is stronger in this way for institute.
Zero-crossing Number threshold value is also preset, preset Zero-crossing Number threshold value is 110 in the present embodiment.The zero passage of the sample signal
When number is less than the Zero-crossing Number threshold value, corresponding sample signal is judged for pedestrian's walk signal, pedestrian's walk signal indicates personnel
The vibration signal that walking generates；When the Zero-crossing Number of the sample signal is greater than or equal to the Zero-crossing Number threshold value, corresponding signal
For vehicle driving signal, vehicle driving signal mainly indicates the vibration signal that vehicle or construction machinery generate.It is illustrated in figure 3
The vibrational waveform figure of pedestrian's walking, is illustrated in figure 4 the vibrational waveform figure of vehicle driving.Pedestrian walk when step action time very
Short, vibration signal can be approximately periodically pulsing, and signals of vehicles is continuous, and the frequency of step signal is far below vehicle
The Zero-crossing Number for the vibration signal that the dominant frequency of signal, i.e. vehicle driving generate is significantly more than single walking letter within certain time
Number.So if the Zero-crossing Number gap that the zero-crossing values threshold value determined makes to calculate within certain time two class signals is enough big,
It can effectively identify both targets.Principle is as follows:
For stable Gaussian random signal of the frequency range from f1 to f2, the zero passage in unit length is counted and power G (f)
Between existing relationship be
From formula (2) if in as can be seen that signal dominant frequency it is higher, unit produce length in Zero-crossing Number it is more；If signal
Dominant frequency it is lower, the Zero-crossing Number in unit length is fewer.
Preferably, power spectrum and power spectrum average value are calculated using the overlapping method of average of weighting.It is illustrated in figure 5 pedestrian's walking
Power spectrum chart, Fig. 6 be vehicle driving power spectrum chart.Calculation method includes:
By signal value xN(n) it is divided into M sections, obtains block signal value xN·i(n), it is overlapped each section of part signal value；So
Segment signal value each in the single sampling period is smoothed using window function afterwards；Secondly, to each section of power spectrum
It is averaging, obtains power spectrum average valueIf the length of all block signal values is all L, and stipulated that every segment data weight
It is foldedThen signal value xN(n) total length is
It is calculated by the following formula and obtains power spectrumAnd power spectrum average value
xN·i(n)=xN[n+(i-1)L]w(n) (3)
In formula, 0≤n≤L-1,1≤i≤M；W (n) is window function.
After calculating the power spectrum average value of real-time vibration signal, by the power spectrum average value of real-time vibration signal and its
Sample signal power spectrum average value in signal type correspondence database is compared, judges, when the power of real-time vibration signal
When composing the sample signal power spectrum average value that average value is less than in its correspondence database, alarm signal is not exported；When real-time vibration
When the power spectrum average value of signal is greater than or equal to the sample signal power spectrum average value in its correspondence database, according to real-time vibration
The signal type of dynamic signal exports different types of alarm signal, for example, if vibration signal is pedestrian's walk signal in real time, i.e., it is defeated
The level-one alarm signal of pedestrian's walk signal is corresponded to out, if vibration signal is vehicle driving signal in real time, that is, exports corresponding vehicle
The second level alarm signal of running signal.
Workflow:
Monitoring personnel by wireless network be remotely the present embodiment marker peg booting, can also small battery 302 with
Power switch is set between monitoring control unit module 2, live booting is carried out on marker peg.Multiple acceleration transducers 201
The subsurface being mounted near optical cable samples real-time vibration signal.It is stored in monitoring control unit module 2 as ginseng
The vibration sample signal temporal signatures value and frequency domain character value and calculated power spectrum examined, according in temporal signatures value
Zero-crossing Number be divided into the pedestrian's walk signal vibration signal of walking (personnel), vehicle driving signal (vehicle for sample signal is vibrated
Traveling and construction machinery signal), and be stored in corresponding database respectively.Near optical cable when vibration without exception, monitoring
Control unit module 2 does not issue alarm signal, and alarm module 6 does not work, low in energy consumption；When people or vehicle are close or nearby exist
When being constructed, optical cable nearby generates abnormal vibration, and the 201 pairs of scene vibrations of multiple acceleration transducers carry out real-time sampling,
The physical signal sampled is converted into electric signal and is transmitted to monitoring control unit module 2, monitoring control unit module 2 will adopt
The real-time vibration signal of sample is compared with the vibration sample signal characteristic value (Zero-crossing Number, power spectrum average value) of storage, classifies,
Judgement monitors control unit module 2 if the comparison result of vibration signal value and vibration sample signal reaches alert if in real time
Corresponding alarm signal is exported respectively according to the classification (pedestrian's walk signal or vehicle driving signal) of real-time vibration signal to arrive
Alarm module 6, alarm module 6 carry out early warning, level-one warning indicators are carried out to pedestrian's walk signal, to vehicle driving signal
Carry out second level warning indicators.Monitoring control unit module 2 exports corresponding alarm signal to alarm module 6, alerts loudspeaker 601
Audio alert prompt is carried out, neighbouring personnel is reminded to have optical cable herein, pays attention to avoiding damage to optical cable, audio alert while warns
Lamp 602 flashes.While alarm module 6 is alarmed, 4 collection site audio signal of audio collection module, image capture module 5
It captures or studio image, and audio signal and picture signal are transmitted to host computer 7 by module 202 by wireless communication,
Understand marker peg and its neighbouring optical cable state immediately convenient for monitoring personnel.202 timing of wireless communication module is by the real-time of marker peg
State is sent to host computer 7, finds Reflector stake immediately convenient for monitoring personnel and maintenance personal is assigned to handle；Audio collection mould
Block 4 can realize intercommunication function with the audio frequency apparatus on host computer 7, and easy access personnel link up in time with monitoring personnel.
The present embodiment marker peg is small in size, structure is simple, and low energy consumption, is quick on the draw, can the timely and effective work for playing early warning
With avoiding damaging optical cable；It is energized using solar energy, without being additionally provided power supply, this mark is increased while environmentally friendly
The applicability of stake；The setting of wireless communication module enables monitoring personnel remotely to understand the state of marker peg everywhere immediately, to go out
It is coped in time when now abnormal；The setting of audio collection module and image capture module makes monitoring personnel pass through sound and image more
Accurately, the state of each marker peg and marker peg attachment optical cable is intuitively understood.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of optical cable marker peg with intelligent early-warning function, including mark pile body (1), the mark pile body (1) are interior
Portion is cavity structure, and the cavity wall of the cavity is equipped with aperture, which is characterized in that this marker peg further includes being installed on the mark
Monitoring control unit module (2), power module (3) in pile body (1), alarm module (6), the power module (3) and institute
Monitoring control unit module (2) electrical connection is stated, the alarm module (6) connect with monitoring control unit module (2) signal；
Further include set on described outer multiple acceleration transducers (201) of mark pile body (1), the acceleration transducer (201) with
Monitoring control unit module (2) the signal connection；
The power module (3) provides power supply；
Multiple acceleration transducers (201) acquire real-time vibration signal；
Power spectrum, the power spectrum average value of the category signal as sample value are prestored in monitoring control unit module (2),
The monitoring control unit module (2) extracts characteristic value to the real-time vibration signal, judges the class of the real-time vibration signal
Type, and the power spectrum of the real-time vibration signal, power spectrum average value are calculated, the power spectrum of the real-time vibration signal is averaged
It is worth and is compared, judges with the power spectrum average value prestored, and alarm signal is exported according to judging result；
The alarm module (6) carries out the alarm of corresponding alarm signal.
2. a kind of optical cable marker peg with intelligent early-warning function according to claim 1, which is characterized in that the power supply mould
Block (3) includes solar panel (301), small battery (302) and power management chip (303), the solar battery
Plate (301) is mounted on mark pile body (1) outer surface, the small battery (302) and the power management chip
(303) it is mounted in the cavity in mark pile body (1)；The solar panel (301) and the small battery
(302) it is electrically connected, the small battery (302) is electrically connected with the power management chip (303), the power management chip
(303) it is electrically connected with the monitoring control unit module (2).
3. a kind of optical cable marker peg with intelligent early-warning function according to claim 1, which is characterized in that the warning mould
Block (6) includes alarm loudspeaker (601) and warning lamp (602), and the alarm loudspeaker (601) and the warning lamp (602) are divided
It is not mounted in mark pile body (1) and cooperates with the aperture on mark pile body (1), the alarm loudspeaker
(601) it is connect respectively with monitoring control unit module (2) signal with the warning lamp (602).
4. a kind of optical cable marker peg with intelligent early-warning function according to claim 1, which is characterized in that the marker peg
It is additionally provided on ontology (1) wireless communication module (202), the wireless communication module (202) and the monitoring control unit module
(2) signal connects, and the wireless communication module (202) is electrically connected with the power management chip (303).
5. a kind of optical cable marker peg with intelligent early-warning function according to claim 1, which is characterized in that the marker peg
It is also equipped on ontology (1) audio collection module (4), the audio collection module (4) and the monitoring control unit module (2)
Signal connection.
6. a kind of optical cable marker peg with intelligent early-warning function according to claim 1, which is characterized in that the marker peg
It is also equipped on ontology (1) image capture module (5), described image acquisition module (5) and the monitoring control unit module (2)
Signal connection.
7. a kind of method of the intelligent early-warning based on optical cable marker peg, the optical cable marker peg includes for acquiring vibration letter in real time
Number multiple acceleration transducers, monitoring control unit module and alarm module for realizing intelligent early-warning, it is special
Sign is, the described method comprises the following steps,
Real-time vibration signal is acquired, waveform processing is carried out to real-time vibration signal, and extract its temporal signatures value, frequency domain character
Value；
The type of the real-time vibration signal is judged according to the temporal signatures value of real-time vibration signal；
The power spectrum that the real-time vibration signal is calculated according to the frequency domain character value of real-time vibration signal, then calculates its function
Rate composes average value；
For different type vibration signal, judgement is compared with the sample value that preparatory training obtains in its power spectrum average value,
Alarm signal is exported according to judging result.
8. the method according to the description of claim 7 is characterized in that the training process of the sample value includes,
Waveform processing is carried out to multiple sample signals, extracts its temporal signatures value, frequency domain character value；
Zero-crossing Number is calculated according to the temporal signatures value of multiple sample signals, judges that the sample is believed according to Zero-crossing Number size
Number type；
The power spectrum that multiple sample signals are calculated according to the frequency domain character value of multiple sample signals, then calculates
Its power spectrum average value；
For different types of vibration signal, its temporal signatures value, frequency domain character value, power spectrum, power spectrum average value are carried out
Classification storage.
9. the method according to the description of claim 7 is characterized in that described sentence according to the temporal signatures value of real-time vibration signal
Break the type of the real-time vibration signal, including, Zero-crossing Number is calculated according to the temporal signatures value of real-time vibration signal, according to mistake
Zero number size judges the type of the real-time vibration signal.
10. the method according to the description of claim 7 is characterized in that calculating power spectrum and power using the overlapping method of average is weighted
Compose average value, comprising:
By signal value xN(n) it is divided into M sections, obtains block signal value xN·i(n), it is overlapped each section of part signal value；Then it adopts
Segment signal value each in the single sampling period is smoothed with window function；Secondly, to each section of power spectrumIt asks
It is average, obtain power spectrum average valueIf the length of all block signal values is all L, and stipulated that every segment data is overlappedThen signal value xN(n) total length is
It is calculated by the following formula and obtains power spectrumAnd power spectrum average value
xN·i(n)=xN[n+(i-1)L]w(n) (3)
In formula, 0≤n≤L-1,1≤i≤M；W (n) is window function.
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