CN105911401A - Power supply condition monitoring system - Google Patents
Power supply condition monitoring system Download PDFInfo
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- CN105911401A CN105911401A CN201610500702.5A CN201610500702A CN105911401A CN 105911401 A CN105911401 A CN 105911401A CN 201610500702 A CN201610500702 A CN 201610500702A CN 105911401 A CN105911401 A CN 105911401A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The invention discloses a power supply condition monitoring system which comprises a sensor probe, a photoelectric detector, a voltage collector and a signal processor, wherein the sensor probe is used for sending out an optical signal according to the mains supply use conditions of the user side; the photoelectric detector is connected with the sensor probe by an optical cable and used for converting the optical signal into a corresponding electric signal after the optical signal is transmitted to the photoelectric detector via the optical fiber; the voltage collector is connected with the photoelectric detector and used for converting the electric signal into a digital signal; and the signal processor is used for processing the digital signal so as to monitor whether the power supply condition of the user side is normal. The power supply condition monitoring system can solve the technical problems that since conventional electronic sensors are easy to be affected by electromagnetic interference in a power supply environment while performing sensing measurement via an electronic circuit and transmitting information via a wireless or signal cable, the information acquisition accuracy is affected; and since power supply is needed for a sensing or transmission system, if the power supply system has fault, normal operation of the electronic system is affected.
Description
Technical field
The present invention relates to field of power, in particular to a kind of power supply state monitoring system.
Background technology
Information technology and automatic electronic increasingly become human society prior development direction and become indispensable one
Part, all kinds of O-E Products are widely applied, and the universal every field covering mankind's activity.Such as,
The field such as smart city, intelligent grid, starts gradually the modern technologies such as network, automatic monitoring to be introduced, and cause
The revolutionary change in this field, improves work efficiency and service quality.
Power supply state monitoring is very important link in power system or electrical power services system, by real-time monitoring
The power supply state of user, it is possible to can make a response in time when disconnection fault occurs in customer power supply, with the shortest time
Problem is solved, it will be greatly promoted the service quality of power supply management for power supply user.
Traditional measurement electronic sensor, typically can carry out sensing measurement by electronic circuit, by wireless or signal is electric
Cable transfers information to information terminal and processes.On the one hand, electronic sensor is easily subject to electromagnetism under power supply environment
Interference, affects the accuracy of acquisition of information, in the application scenario that some are special, and such as electromagnetic field, radiation field etc., pass
The electronic measuring method of system suffers from disturbing the biggest；On the other hand, sense and transmission system needs power supply, at certain
Also need to during a little long-distance transmissions increase indispensable relay station, particularly when remote transmission, typically not over several public affairs
In be necessary for build relay station to compensate the loss of signal, once electric power system breaks down, it will affect electronic system
Normal operation.
For the problems referred to above, effective solution is the most not yet proposed.
Summary of the invention
Embodiments provide a kind of power supply state monitoring system, passing through at least solving conditional electronic sensor
Electronic circuit carries out sensing measurement, by wireless or signal cable transmission information time, be easily subject under power supply environment
Electromagnetic interference, affects the accuracy of acquisition of information, and sensing and transmission system need power supply, and once electric power system goes out
Existing fault, it will affect the technical problem that electronic system runs well.
An aspect according to embodiments of the present invention, it is provided that a kind of power supply state monitoring system, including: sensor is visited
Head, for using the situation of civil power to send optical signal according to user side；Photodetector, by optical cable and above-mentioned sensing
Device probe connects, and is used at above-mentioned optical signal after above-mentioned optical cable transmission to above-mentioned photodetector, is believed by above-mentioned light
Number be converted to the signal of telecommunication of correspondence；Voltage collector, is connected with above-mentioned photodetector, for above-said current signal being turned
It is changed to digital signal；Signal processor, for processing above-mentioned digital signal, to monitor the confession of above-mentioned user side
Electricity condition is the most normal.
Further, the sensor probe includes multiple, and wherein, each sensor probe is for according to a user
End uses the situation of civil power to send the laser with predetermined wavelength and predetermined carrier frequency, and wherein, said system also includes:
Optical-fiber bundling device, for being combined into a branch of by the probe tail optical fiber that all the sensors is popped one's head in；Light wave Multiplexing module, passes through optical cable
It is connected with above-mentioned optical-fiber bundling device, transmits through corresponding probe tail optical fiber for the laser sent at each sensor probe
To above-mentioned optical-fiber bundling device, then after optical cable transmission to above-mentioned light wave Multiplexing module, the laser of different wave length is carried out
Beam splitting processes, and wherein, above-mentioned photodetector includes multiple, and each photodetector is with above-mentioned light wave Multiplexing module even
Connect, for receiving the laser of a kind of corresponding wavelength, and the laser of this corresponding wavelength is converted to the signal of telecommunication of correspondence.
Further, the signal of telecommunication that above-mentioned each photodetector is converted to is mixed with swashing of multiple carrier frequency
Optical information, wherein, said system also includes: multiple filter circuits, and each wave filter and a photodetector connect,
The signal of telecommunication for being converted to above-mentioned each photodetector filters, and obtains swashing of above-mentioned multiple carrier frequency
Optical information, wherein, above-mentioned voltage collector is plurality of voltages harvester, is connected with above-mentioned multiple filter circuits, is used for
The each self-corresponding signal of telecommunication of laser intelligence of above-mentioned multiple carrier frequency is converted to digital signal.
Further, the sensor probe includes: electric pressure converter, for by the civil power in user side supply line
Be converted to low-voltage DC；Laser instrument, is used for sending optical signal；Frequency modulator, for sending the modulation letter of predeterminated frequency
Number；Laser driver, is connected with above-mentioned frequency modulator, and is connected with above-mentioned laser instrument, is used for exporting superposition above-mentioned pre-
If the continuous current of the modulated signal of frequency, to drive above-mentioned laser instrument to send optical signal；Manostat, with above-mentioned voltage
Transducer connects, and is the most also connected with above-mentioned frequency modulator and above-mentioned laser driver, for according to above-mentioned low-voltage DC
Burning voltage is provided for above-mentioned frequency modulator and above-mentioned laser driver.
Further, the voltage that burning voltage is+5V that above-mentioned manostat provides.
Further, the sensor probe also includes: sensor outer housing, wherein, above-mentioned electric pressure converter, above-mentioned
Laser instrument, above-mentioned frequency modulator, above-mentioned laser driver and above-mentioned manostat are encapsulated in the sensor enclosure.
Further, above-mentioned laser driver is constant-current source circuit.
Further, above-mentioned constant-current source circuit is to use constant-current circuit based on Current Negative Three-Point Capacitance.
Further, above-mentioned laser instrument is semiconductor laser.
In embodiments of the present invention, the mode of fiber optic conduction is used, by arranging sensing in power supply state monitoring system
Device probe, photodetector, voltage collector, signal processor, wherein, sensor probe, for according to user
End uses the situation of civil power to send optical signal；Photodetector, is connected with sensor probe by optical cable, at light
Signal, after optical cable transmission to photodetector, converts optical signals to the signal of telecommunication of correspondence；Voltage collector, with
Photodetector connects, and is used for converting electrical signals to digital signal；Signal processor, for carrying out digital signal
Process, the most normal to monitor the power supply state of user side, when having reached remote transmission, up to a hundred kilometers can be reached
Transmission range, it is capable of community and powers the purpose of function that user's power-off monitors in real time, it is achieved thereby that electromagnetic interference
Technique effect, and then solve conditional electronic sensor carrying out sensing measurement by electronic circuit, by wireless or
During person's signal cable transmission information, under power supply environment, it is easily subject to electromagnetic interference, affects the accuracy of acquisition of information,
And sensing and transmission system need power supply, once electric power system breaks down, it will affects electronic system and runs well
Technical problem.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.At accompanying drawing
In:
Fig. 1 is the structure chart of a kind of optional power supply state monitoring system according to embodiments of the present invention；
Fig. 2 is the structure chart of a kind of optional power supply state monitoring system according to embodiments of the present invention；
Fig. 3 is the structure chart of a kind of optional sensor probe according to embodiments of the present invention；
Fig. 4 is the circuit diagram of a kind of optional laser driver according to embodiments of the present invention.
In Fig. 2: 1-sensor probe 1,2-sensor probe 2,3-sensor probe 3,4-sensor probe 4,
5-sensor probe 5,6-sensor probe 6,7-sensor probe 7,8-sensor probe 8,9-sensor probe
9,10-sensor probes 10,11-sensor probe n, 12-optical-fiber bundling device, 13-optical cable, 14-DWDM, 15-
Photodetector 1,16-photodetector 2,17-photodetector 3,18-wave filter 1,19-wave filter 2,20-
Wave filter 3,21-voltage collector (e.g., plurality of voltages signal picker), 22-signal processor；
In Fig. 3: 23-optical fiber pigtail, 24-sensor outer housing, 25-cable, 26-electric pressure converter, 27-manostat is (i.e.
Voltagre regulator), 28-laser driver, 29-frequency modulator, 30-laser instrument.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with in the embodiment of the present invention
Accompanying drawing, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that described embodiment
It is only the embodiment of a present invention part rather than whole embodiments.Based on the embodiment in the present invention, ability
The every other embodiment that territory those of ordinary skill is obtained under not making creative work premise, all should belong to
The scope of protection of the invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that this
Sample use data can exchange in the appropriate case, in order to embodiments of the invention described herein can with except
Here the order beyond those illustrating or describing is implemented.Additionally, term " includes " and " having " and they
Any deformation, it is intended that cover non-exclusive comprising, such as, contain the process of a series of unit, system, product
Product or equipment are not necessarily limited to those unit clearly listed, but can include the most clearly listing or for these
Other unit that process, product or equipment are intrinsic.
Embodiment 1
According to embodiments of the present invention, it is provided that the embodiment of a kind of power supply state monitoring system.
Fig. 1 is the structure chart of a kind of optional power supply state monitoring system according to embodiments of the present invention, as it is shown in figure 1,
This system includes: sensor probe 102, for using the situation of civil power to send optical signal according to user side；Light electrical resistivity survey
Survey device 104, be connected with sensor probe 102 by optical cable, be used at optical signal through optical cable transmission to photodetection
After device 104, convert optical signals to the signal of telecommunication of correspondence；Voltage collector 106, is connected with photodetector 104,
For converting electrical signals to digital signal；Signal processor 108, for processing digital signal, with monitoring
The power supply state of user side is the most normal.
Specifically, during enforcement, being arranged in the supply line of user side by sensor probe, sensor probe can be real
Time detection supply line on the signal of telecommunication, and generate corresponding optical signal according to the signal of telecommunication that detects, and then by visiting
Fine by the optical signal transmission generated to photodetector end to end, now photodetector converts optical signals to correspondence again
The signal of telecommunication, for the ease of computer disposal, voltage collector can carry out sampling processing to this signal of telecommunication, thus by telecommunications
Number be converted to corresponding digital signal, and by digital data transmission to signal processor, make signal processor according to reception
The power supply state of the digital signal monitoring user side arrived is the most normal.
Owing to using optical fiber technology can overcome electromagnetic interference, when remote transmission, owing to attenuated optical signal is the faintest,
Therefore without relay station or for electrically amplified etc. in tens kilometers, thus the transmission range of up to a hundred kilometers can be reached,
Simplifying quantities and the system complexity of transmission so that system is simple and reliable, pilot process is without power supply, without electromagnetism
Disturbing, the most do not produce any electromagnetic radiation or electric leakage, safety is higher, is that conditional electronic mode cannot be reached far away
's.
By the embodiment of the present invention, use the mode of fiber optic conduction, by arranging sensing in power supply state monitoring system
Device probe, photodetector, voltage collector, signal processor, wherein, sensor probe, for according to user
End uses the situation of civil power to send optical signal；Photodetector, is connected with sensor probe by optical cable, at light
Signal, after optical cable transmission to photodetector, converts optical signals to the signal of telecommunication of correspondence；Voltage collector, with
Photodetector connects, and is used for converting electrical signals to digital signal；Signal processor, for carrying out digital signal
Process, the most normal to monitor the power supply state of user side, when having reached remote transmission, up to a hundred kilometers can be reached
Transmission range, it is capable of community and powers the purpose of function that user's power-off monitors in real time, it is achieved thereby that electromagnetic interference
Technique effect, and then solve conditional electronic sensor carrying out sensing measurement by electronic circuit, by wireless or
During person's signal cable transmission information, under power supply environment, it is easily subject to electromagnetic interference, affects the accuracy of acquisition of information,
And sensing and transmission system need power supply, once electric power system breaks down, it will affects electronic system and runs well
Technical problem.
Embodiment 2
Fig. 2 is the structure chart of a kind of optional power supply state monitoring system according to embodiments of the present invention, as in figure 2 it is shown,
The sensor probe can include multiple, such as, be respectively as follows: 1-sensor probe 1,2-sensor probe 2,3-
Sensor probe 3,4-sensor probe 4,5-sensor probe 5,6-sensor probe 6,7-sensor probe 7,
8-sensor probe 8,9-sensor probe 9,10-sensor probe 10,11-sensor probe n, wherein, each
Sensor probe for using the situation of civil power to send to have predetermined wavelength and predetermined carrier frequency according to user side
Laser, wherein, said system can also include: optical-fiber bundling device 12, for the probe tail popped one's head in by all the sensors
Fibre is combined into a branch of；Light wave Multiplexing module, is also called intensive light wave Multiplexing module (Dense Wavelength division
Multiplexing, referred to as 14-DWDM), it is connected with optical-fiber bundling device by optical cable, for visiting at each sensor
The laser that hair goes out is transferred to optical-fiber bundling device 12 through corresponding probe tail optical fiber 23, then is transferred to light through optical cable 13
After ripple Multiplexing module 14, the laser of different wave length being split process, wherein, photodetector includes multiple, often
Individual photodetector is connected with light wave Multiplexing module, for receiving the laser of a kind of corresponding wavelength, and by this corresponding wavelength
Laser be converted to correspondence the signal of telecommunication.
Concrete, when implementing, each sensor probe is arranged in the supply line of a corresponding user side,
Such as, in the supply line of the x-th user side that x-th sensor probe is separately mounted to correspondence, different biographies
Sensor probe can detect the signal of telecommunication in corresponding supply line respectively in real time, and right according to the signal of telecommunication generation detected
The optical signal answered, has different predetermined wavelengths (such as respectively λ according to the optical signal that the different signals of telecommunication generates1-λn)
With different predetermined carrier frequencies (such as respectively f1-fm), by probe tail optical fiber by generate above-mentioned have predetermined wavelength and
Each optical signal transmission of predetermined carrier frequency is to optical-fiber bundling device, and this optical-fiber bundling device is for popping one's head in all the sensors
Probe tail optical fiber be combined into a branch of, be connected with optical-fiber bundling device by an optical cable (i.e. optical cable 13), optical cable by optical fiber close
The optical signal of the different wave length transmitted is split process to DWDM, this DWDM by the optical signal transmission of bundle device,
Obtain the optical signal of different wave length (such as λ1-λn), the optical signal of different wave length is transferred to corresponding photodetector respectively,
Such as, wavelength is λ1Optical signal transmission give a photodetector, wavelength is λ2Optical signal transmission to light electrical resistivity survey
Surveying device, wavelength is λnOptical signal transmission give another photodetector, due to photodetector by optical signal change
During for voltage signal so that be mixed with the laser intelligence of multiple carrier frequency in this signal, corresponding photodetector connects
After receiving the optical signal of respective wavelength, be converted to corresponding voltage signal, give corresponding wave filter through optical cable transmission.As
Shown in Fig. 2, the voltage signal converted through photodetector 15 transmits to wave filter 18, through photodetector 16
The voltage signal transmission converted is transmitted to wave filter to wave filter 19, the voltage signal converted through photodetector 17
20.As such, it is possible to the signal filtering of several different frequencies is drawn.Wherein, filtered multiline message is all by multichannel
Voltage collector 21 is changed into the digital signal that can calculate process, and transfers to signal processor 22 to process.
By the embodiment of the present invention, the probe tail utilizing optical-fiber bundling device to be popped one's head in by all the sensors is combined into a branch of, thus
The optical signal of different wave length and frequency is combined into a branch of so that the optical signal that different sensors probe sends can be multiple with wavelength-division
With unified root optical cable, it is possible to realize community and power the function that user's power-off monitors in real time, have wide market prospect and
Higher practical value.The laser instrument using different wave length can realize multi-probe wavelength-division multiplex so that multiple sensings
Device can simultaneously multiplexing transmission in same circuit；Use the carrier wave of multi-frequency, utilize the difference of co-wavelength signal
Frequency modulation(PFM) realizes multi-probe multiplexing；In conjunction with wavelength-division multiplex and ZAP, it is possible to improve probe multiplexing on a large scale
Quantity, apply for the scale of sensor and provide convenience condition.
Alternatively, the signal of telecommunication that above-mentioned each photodetector is converted to is mixed with the laser of multiple carrier frequency
Information, wherein, said system can also include: multiple filter circuits, and each wave filter and a photodetector are even
Connect, filter for the signal of telecommunication that each photodetector is converted to, obtain the laser letter of multiple carrier frequency
Breath, wherein, voltage collector is plurality of voltages harvester, is connected with multiple filter circuits, for multiple carrier frequency
The each self-corresponding signal of telecommunication of laser intelligence of rate is converted to digital signal.
By the embodiment of the present invention, different wavelength is used to be modulated from different frequencies realizing wavelength-division multiplex and frequency
Rate modulates the combination addressing technique combined, it is possible to significantly expands the multiplexing capacity of sensor, improves the multiple spot of system
Monitoring capability.
Alternatively, as it is shown on figure 3, the sensor probe in said system may include that electric pressure converter 26, it is used for
Civil power in user side supply line is converted to low-voltage DC；Laser instrument 30, is used for sending optical signal；Frequency modulator
29, for sending the modulated signal of predeterminated frequency；Laser driver 28, is connected with frequency modulator 29, and and laser instrument
30 connect, for exporting the continuous current of the modulated signal of superposition predeterminated frequency, to drive laser instrument 28 to send light
Signal；Manostat 27, is connected with electric pressure converter 26, is the most also connected with frequency modulator 29 and laser driver 28,
For providing burning voltage according to low-voltage DC for frequency modulator 29 and laser driver 28.It addition, sensor probe
Input can connect cable 25, outfan can connect optical fiber pigtail 23.
That is, the sensor probe is main by electric pressure converter, manostat, frequency modulator, laser driver, laser
Device, optical fiber pigtail and sensor outer housing etc. form.Wherein, electric pressure converter is by the city of power consumer supply line
Electricity is converted to low-voltage DC；Electric pressure converter is connected with Voltagre regulator；Voltagre regulator and laser driver and
Frequency modulator is connected, and provides stable voltage for it；Frequency modulator produces the sinusoidal modulation signal of frequency f and is sent to perseverance
Stream device, galvanostat produce frequency be f sinusoidal carrier modulation electric current drive to laser instrument, make laser instrument send wavelength X,
Frequency is the laser output of f；Different sensors has different wavelength or different modulating frequencies, is used for distinguishing
Sensor, therefore, each sensor is with (λ, f) can uniquely identify out, does not haves two complete phases of parameter
Same situation.
Alternatively, the voltage that burning voltage is+5V that manostat provides.Pass according to the assembling of structural representation shown in Fig. 2
Sensor is popped one's head in, and wherein, the electric pressure converter of each sensor probe is connected by electric wire with manostat, and manostat exports
Voltage is+5V voltage, and is connected with frequency modulator and laser driver by electric wire, and frequency modulator sends a certain modulation
The signal of telecommunication of frequency passes to laser driver, and laser driver is that the continuous current of the output one superposition modulated signal of telecommunication is used
In directly driving laser instrument, laser instrument to send laser and exported by optical fiber pigtail, above several parts all by hermetically sealed in
In sensor outer housing.
When the power supply state of user side is normal, the normal civil power that user is used will be delivered to sensor by cable
Probe is internal, and then laser instrument just can normally work, and output one is fixed certain wavelength and fixes the laser of certain frequency.Wherein,
The differentiation of sensor is as shown in the table:
Visible, each sensor has different wavelength and different modulating frequencies, therefore, it can by wavelength and tune
Frequency processed is tabled look-up and is drawn the position of respective sensor/user, thus builds a multiple spot time supervision covering a large number of users
System.
Alternatively, as it is shown on figure 3, the sensor probe can also include: sensor outer housing 24, wherein, voltage
It is internal that transducer, laser instrument, frequency modulator, laser driver and manostat are encapsulated in sensor outer housing 24.Sensor
Shell 24 can protect electric pressure converter, laser instrument, frequency modulator, laser driver and the manostat etc. being provided with,
To prevent these parts damages.
Alternatively, laser driver can be constant-current source circuit.Alternatively, constant-current source circuit can be to use based on electricity
Flow degenerative constant-current circuit.Alternatively, laser instrument can be semiconductor laser.
Laser instrument may select DFB semiconductor laser in the present embodiment.Frequency modulator uses MAX038 signal generator core
Sheet can produce the sinewave modulation signal of standard.Laser driver uses constant-current circuit based on Current Negative Three-Point Capacitance, such as figure
Shown in 4, modulated signal is loaded on I_reset, and Vcc is that+the 5V that manostat output provides powers.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not has in certain embodiment
The part described in detail, may refer to the associated description of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be passed through other
Mode realize.Wherein, device embodiment described above is only schematically, the division of such as said units,
Can be that a kind of logic function divides, actual can have other dividing mode, the most multiple unit or assembly when realizing
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, institute
The coupling each other shown or discuss or direct-coupling or communication connection can be by some interfaces, unit or mould
The INDIRECT COUPLING of block or communication connection, can be being electrical or other form.
The above-mentioned unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to
On multiple unit.Some or all of unit therein can be selected according to the actual needs to realize the present embodiment scheme
Purpose.
The most above-mentioned is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improve and profit
Decorations also should be regarded as protection scope of the present invention.
Claims (9)
1. a power supply state monitoring system, it is characterised in that including:
Sensor probe, for using the situation of civil power to send optical signal according to user side；
Photodetector, is connected with described sensor probe by optical cable, is used at described optical signal through described
Described optical signal, to after described photodetector, is converted to the signal of telecommunication of correspondence by optical cable transmission；
Voltage collector, is connected with described photodetector, for the described signal of telecommunication is converted to digital signal；
Signal processor, for processing described digital signal, to monitor the power supply state of described user side
The most normal.
System the most according to claim 1, it is characterised in that
Described sensor probe includes multiple, and wherein, each sensor probe is for using according to a user side
The situation of civil power sends the laser with predetermined wavelength and predetermined carrier frequency,
Wherein, described system also includes:
Optical-fiber bundling device, for being combined into a branch of by the probe tail optical fiber that all the sensors is popped one's head in；
Light wave Multiplexing module, is connected with described optical-fiber bundling device by optical cable, for sending out at each sensor probe
The laser gone out is transferred to described optical-fiber bundling device through corresponding probe tail optical fiber, then through optical cable transmission to described light
After ripple Multiplexing module, the laser of different wave length is split process,
Wherein, described photodetector includes multiple, and each photodetector is connected with described light wave Multiplexing module,
For receiving the laser of a kind of corresponding wavelength, and the laser of this corresponding wavelength is converted to the signal of telecommunication of correspondence.
System the most according to claim 2, it is characterised in that the telecommunications that described each photodetector is converted to
All being mixed with the laser intelligence of multiple carrier frequency in number, wherein, described system also includes:
Multiple filter circuits, each wave filter and a photodetector connect, for described each smooth electrical resistivity survey
The signal of telecommunication that survey device is converted to filters, and obtains the laser intelligence of described multiple carrier frequency,
Wherein, described voltage collector is plurality of voltages harvester, is connected with the plurality of filter circuit, is used for
The each self-corresponding signal of telecommunication of laser intelligence of described multiple carrier frequency is converted to digital signal.
System the most according to any one of claim 1 to 3, it is characterised in that described sensor probe includes:
Electric pressure converter, for being converted to low-voltage DC by the civil power in user side supply line；
Laser instrument, is used for sending optical signal；
Frequency modulator, for sending the modulated signal of predeterminated frequency；
Laser driver, is connected with described frequency modulator, and is connected with described laser instrument, is used for exporting superposition institute
State the continuous current of the modulated signal of predeterminated frequency, to drive described laser instrument to send optical signal；
Manostat, is connected with described electric pressure converter, the most also connects with described frequency modulator and described laser driver
Connect, for providing burning voltage according to described low-voltage DC for described frequency modulator and described laser driver.
System the most according to claim 4, it is characterised in that the burning voltage that described manostat provides is+5V's
Voltage.
System the most according to claim 4, it is characterised in that described sensor probe also includes:
Sensor outer housing, wherein, described electric pressure converter, described laser instrument, described frequency modulator, described laser
Driver and described manostat are encapsulated in inside described sensor outer housing.
System the most according to claim 4, it is characterised in that described laser driver is constant-current source circuit.
System the most according to claim 7, it is characterised in that described constant-current source circuit is negative anti-for using based on electric current
The constant-current circuit of feedback.
System the most according to claim 4, it is characterised in that described laser instrument is semiconductor laser.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344910A (en) * | 2018-01-18 | 2018-07-31 | 珠海市飞天科技有限公司 | A kind of power system monitoring equipment, system and method |
| CN108390721A (en) * | 2018-05-10 | 2018-08-10 | 武汉锐科光纤激光技术股份有限公司 | A kind of laser internal signal transmission system |
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