CN103063954A - Multi-sensor array monitoring system on states of power equipment - Google Patents
Multi-sensor array monitoring system on states of power equipment Download PDFInfo
- Publication number
- CN103063954A CN103063954A CN2012105740268A CN201210574026A CN103063954A CN 103063954 A CN103063954 A CN 103063954A CN 2012105740268 A CN2012105740268 A CN 2012105740268A CN 201210574026 A CN201210574026 A CN 201210574026A CN 103063954 A CN103063954 A CN 103063954A
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- power equipment
- monitoring system
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a multi-sensor array monitoring system on states of power equipment. The multi-sensor array monitoring system on the states of the power equipment comprises a plurality of sensor arrays, a plurality of signal adjusting modules, a plurality of signal collecting modules and a server. The plurality of sensor arrays respectively and correspondingly collect a plurality of physical parameters and convert the physical parameters to corresponding physical parameter signals. The plurality of signal adjusting modules are respectively in corresponding connection with the sensor arrays and carry out preprocessing on the physical parameter signals. The plurality of signal collecting modules are respectively and correspondingly connected with the signal adjusting modules and collect the physical parameter signals which are preprocessed and convert the physical parameter signals to corresponding digital signals. The server is connected with the signal collecting modules through networks and receives the digital signals transmitted by the signal collecting modules. According to the multi-sensor array monitoring system on the states of the power equipment, the plurality of physical parameters of the power equipment can be collected, and on the basis of analysis on the physical parameters, monitoring and estimation on the operation states of the power equipment are conducted.
Description
Technical field
The present invention relates to a kind of monitoring system, relate in particular to a kind of signal monitoring system.
Background technology
Power equipment is subjected to the impact of external environment factor in During Process of Long-term Operation, various faults can occur inevitably, occur deteriorated, thereby affect power equipment normal operation, as fail in time to find and take suitable reclamation activities, then deteriorated can development, thereby accidents caused.
The single one physical amount is adopted in the at present status monitoring of power equipment and assessment mostly, for example adopts vibration monitoring to monitor the running status of power equipment.Vibration monitoring is installed simple, sensitive monitoring, and whole measuring system and power equipment are without electrical connection during on-line monitoring, and therefore safe and reliable, it is multiplex in winding and the situation unshakable in one's determination of monitoring transformer.
But in fact, the deteriorated rule of power equipment is subjected to the multiple factor, such as the impact of electricity, heat, machinery, chemistry, environment etc., therefore adopts at present single vibration monitoring can not accurately monitor the running status of power equipment.The other different phase of the major defect of power equipment in being in evolution, all kinds of physical parameter factors also can present different variation characteristics and value, if therefore can carry out comprehensive monitoring to the duty of power equipment by a plurality of physical parameter factors, will promote sensitivity and the reliability of monitoring, improve the accuracy of status monitoring and assessment, fault diagnosis, location and early warning.
Summary of the invention
The purpose of this invention is to provide a kind of electrical Equipment On-Line Monitoring System, it is by adopting a plurality of sensor arraies to gather a plurality of physical parameters, on the basis that these physical parameters are analyzed, the variation characteristic that comprehensive a plurality of physical parameter is right and value and the duty of power equipment is monitored and assessed, thereby promote sensitivity and the reliability of power equipment state monitoring, improve the accuracy of status monitoring and assessment, fault diagnosis.
In order to realize the foregoing invention purpose, the invention provides a kind of power equipment state monitoring system of multisensor array, it comprises:
Several sensor arraies, correspondence gathers several physical parameters respectively, and physical parameter is converted to corresponding physical parameter signal;
Several signal condition modules, its respectively with the corresponding connection of described each sensor array, each physical parameter signal is carried out pre-service;
Several signal acquisition module, its respectively with the corresponding connection of described each signal condition module, gather each through pretreated physical parameter signal, and be converted into corresponding digital signal;
One server, it is connected with described each signal acquisition module by network, receives the digital signal of each signal acquisition module transmission.
That is to say, in the technical program, adopt sensor array to detect several physical parameter signals of power equipment, then be transferred to each corresponding signal condition module each the physical parameter signal that detects is carried out pre-service, then each corresponding signal acquisition module collection is transferred to server analysis through pretreated physical parameter signal with it.
Further, in the power equipment state monitoring system of above-mentioned multisensor array, described several sensor arraies comprise a superfrequency (UHF, Ultra High Frequency, 300MHz-3000MHz) sensor array, a vibration detector arrays and an AE sensor (Acoustic Emission, i.e. calibrate AE sensor) array are respectively applied to detect ultrahigh-frequency signal, vibration signal and the acoustical signal of power equipment; Described several signal condition modules comprise a ultrahigh-frequency signal conditioning module, a vibration signal conditioning module and an AE signal condition module; Described several signal acquisition module comprise a ultrahigh-frequency signal acquisition module, a vibration signals collecting module and an AE signal acquisition module; Described superfrequency sensor array comprises several superfrequency sensors; Described vibration detector arrays comprises several vibration transducers; Described AE sensor array comprises several AE sensors.That is to say that the superfrequency sensor array is connected with the ultrahigh-frequency signal conditioning module, the ultrahigh-frequency signal conditioning module is connected with the ultrahigh-frequency signal acquisition module; Equally, vibration detector arrays is connected with the vibration signal conditioning module, and the vibration signal conditioning module is connected with the vibration signals collecting module; The AE sensor is connected with AE signal condition module, and AE signal condition module is connected with the AE signal acquisition module.
Further, described ultrahigh-frequency signal conditioning module is connected with AE signal condition module: be connected differential amplifier, low-pass filter and the signal isolation circuit that input direction connects successively with the AE signal along ultrahigh-frequency signal, so that ultrahigh-frequency signal and AE signal are amplified and filtering.
Further, in the power equipment state monitoring system of above-mentioned multisensor array, described vibration signal conditioning module comprises signal acquisition module and signal isolation filter module:
Described signal acquisition module comprises the adjustable voltage stabilizing integrated chip of three ends, the 3rd port of the adjustable voltage stabilizing integrated chip of this three end connects the positive pole of direct supply, the positive pole of this direct supply is through power filtering capacitor ground connection, connect the first resistance between the 1st port of the adjustable voltage stabilizing integrated chip of this three end and the 2nd port, the 2nd port of the adjustable voltage stabilizing integrated chip of this three end is successively through the second electric capacity and the second resistance eutral grounding, the two ends that are connected across the vibration transducer interface after the series connection of described the second electric capacity and the second resistance consist of to exchange to hold and hinder bleeder circuit, the node of described the second electric capacity and the second resistance is the signal output part of vibration transducer, the adjustable voltage stabilizing integrated chip of described three ends and the first resistance form constant current source, for described vibration transducer provides the galvanic current source;
Described signal isolation filter module comprises buffer circuit and holds the resistance filtering circuit that described buffer circuit comprises linear optical coupling.
Further, in the power equipment state monitoring system of above-mentioned multisensor array, described ultrahigh-frequency signal acquisition module and AE signal acquisition module include:
One AD chip, it is connected with described signal condition module;
One CPLD (CPLD, Complex Programmable Logic Device), it is connected with the AD chip, and control AD chip carries out signals collecting;
One storer, its data bus is connected with the data bus of described CPLD.
Further, described storer has the SRAM storage array.
Further, described AD chip is the double channel A/D chip, and sample frequency is greater than 50MHz.
Further, in the power equipment state monitoring system of above-mentioned multisensor array, described vibration signals collecting module comprises: a trigger module, a multi-channel synchronous A/D converter, a main control module and a memory module; Wherein:
Described trigger module comprises D/A converter and comparer, the input end of described comparer is connected with the output terminal of vibration signal conditioning module, the output terminal of comparer is connected with the control signal input end of main control module, the input end of described multi-channel synchronous A/D converter is connected with the output terminal of signal condition module, the control signal output terminal of described main control module is connected with the signal input channel of D/A converter, the analog signal output passage of D/A converter is connected with comparer, the first data bus of multi-channel synchronous A/D converter links to each other with the data bus of main control module, the second data bus of this multi-channel synchronous A/D converter links to each other with the data bus of memory module, the passage control interface of described main control module is connected with the passage control interface of memory module, and described main control module is connected with described server by network.
Further, in the power equipment state monitoring system of above-mentioned multisensor array, the number of described vibration transducer is 6, and the number of described superfrequency sensor is 6, and the number of described AE sensor is 6.
Further, in the power equipment state monitoring system of above-mentioned multisensor array, the frequency range of described vibration transducer is 0.04-1500Hz.
The power equipment state monitoring system of multisensor array of the present invention can gather a plurality of physical parameters of power equipment, on the basis that these physical parameters are analyzed, the variation characteristic of comprehensive a plurality of physical parameters and value and the duty of power equipment is monitored and assessed, thereby promote sensitivity and the reliability of power equipment state monitoring, improve the accuracy of status monitoring and assessment, fault diagnosis.
Description of drawings
Fig. 1 is the power equipment state monitoring system structured flowchart in one embodiment of multisensor array of the present invention.
Fig. 2 be multisensor array of the present invention the power equipment state monitoring system in one embodiment, the structured flowchart of ultrahigh-frequency signal conditioning module and ultrahigh-frequency signal acquisition module.
The power equipment state monitoring system that Fig. 3 has shown multisensor array of the present invention in one embodiment, the inner structure of the AD chip of AE signal acquisition module and ultrahigh-frequency signal acquisition module.
Fig. 4 has shown a kind of sampling time sequence figure of AD chip.
The power equipment state monitoring system that Fig. 5 has shown multisensor array of the present invention in one embodiment, the interface synoptic diagram of the AD chip of AE signal acquisition module.
The power equipment state monitoring system that Fig. 6 has shown multisensor array of the present invention in one embodiment, the interface synoptic diagram of the storer of AE signal acquisition module and ultrahigh-frequency signal acquisition module.
The power equipment state monitoring system that Fig. 7 has shown multisensor array of the present invention in one embodiment, the circuit diagram of signal acquisition module in the vibration signal conditioning module.
The power equipment state monitoring system that Fig. 8 has shown multisensor array of the present invention in one embodiment, the circuit diagram of signal isolation filter module in the vibration signal conditioning module.
The power equipment state monitoring system that Fig. 9 has shown multisensor array of the present invention in one embodiment, the structured flowchart of vibration signals collecting module.
Figure 10 be multisensor array of the present invention the power equipment state monitoring system in one embodiment, the circuit diagram of trigger module in the vibration signals collecting module.
Figure 11 be multisensor array of the present invention the power equipment state monitoring system in one embodiment, the circuit diagram of comparer in the trigger module of vibration signals collecting module.
Figure 12 be multisensor array of the present invention the power equipment state monitoring system in one embodiment, the circuit diagram of the multi-channel synchronous AD converter in the vibration signals collecting module.
Figure 13 be multisensor array of the present invention the power equipment state monitoring system in one embodiment, the circuit diagram of the main control module in the vibration signals collecting module.
Figure 14 be multisensor array of the present invention the power equipment state monitoring system in one embodiment, the circuit diagram of the memory module in the vibration signals collecting module.
Embodiment
Come the power equipment state monitoring system of multisensor array of the present invention is further explained explanation below in conjunction with specific embodiment and Figure of description.
As shown in Figure 1, the power equipment state monitoring system of this multisensor array comprises: superfrequency sensor array, vibration detector arrays and AE sensor array are respectively applied to detect ultrahigh-frequency signal, vibration signal and the acoustical signal of power equipment, and this superfrequency sensor array, vibration detector arrays and AE sensor array comprise respectively 6 superfrequency sensors, 6 vibration transducers and 6 AE sensors; Wherein the superfrequency sensor array is connected with the ultrahigh-frequency signal conditioning module, and the ultrahigh-frequency signal conditioning module is connected with the ultrahigh-frequency signal acquisition module; Vibration detector arrays is connected with the vibration signal conditioning module, and the vibration signal conditioning module is connected with the vibration signals collecting module; The AE sensor array is connected with AE signal condition module, and AE signal condition module is connected with the AE signal acquisition module; Ultrahigh-frequency signal acquisition module, vibration signals collecting module and AE signal acquisition module all are connected with server by the network switch, and the signal that server docks these signal acquisition module collections is analyzed, and judges the state of power equipment.
Fig. 2 has shown in one embodiment, the structured flowchart of ultrahigh-frequency signal conditioning module and ultrahigh-frequency signal acquisition module.As shown in Figure 2, the ultrahigh-frequency signal conditioning module comprises two differential amplifiers, two low-pass filters and two signal isolation circuit, ultrahigh-frequency signal amplifies from the differential signal input end input of differential amplifier, transfer single-ended signal to by differential signal, then carry out filtering by low-pass filter, then gathered by the ultrahigh-frequency signal acquisition module through after the isolation of buffer circuit.Equally, AE signal condition module also adopts this structure.
Please continue to consult Fig. 2, the ultrahigh-frequency signal acquisition module comprises the AD chip, and it is connected with buffer circuit, has two AD converter; The AD chip is connected with CPLD, and control AD chip carries out signals collecting; Data bus with storer of SRAM storage array is connected with the data bus of CPLD, CPLD can process the sampling output data of AD chip flexibly like this, namely both data can have been read in and carry out some filtering processing among the CPLD, again data are deposited in the local cache, or directly provide the write control signal of SRAM, sampled data is write local cache; A MCU also is connected with CPLD in addition.Wherein, the AD chip is the double channel A/D chip, and sample frequency is greater than 50MHz, and sampling resolution is preferably 14bit, for example the AD9248 chip of ADI company.Equally, the AE signal acquisition module also adopts this structure.
AD9248 is 14 binary channels analog-digital chips that ADI company releases, and this chip adopts the 3.3V power supply, and speed is chosen as three kinds of 20MS/s, 40MS/s and 60MS/s, and it has two independently SHA and ADC, a Voltage Reference that is integrated in chip internal.AD9248 adopts a multistage differential pipeline structure with output error correction logic, thereby high-precision 14 quantification output is provided.Twin-channel AD9248 can provide the dynamic property same with the single channel AD converter, but again than using 2 single channel AD converter to have better cross talk resistance energy.Fig. 3 has shown the built-in function block diagram of AD9248.In Fig. 3:
VIN+, VIN-: analog difference signal input end;
REFT, REFB: outside reference voltage input end;
D0-D13: data output;
OEA, OEB:A, B two channel data output enable positions, this position is 0 o'clock, the enable data bus is 1 o'clock, is output as high resistant;
PDWN_A, PDWN_B: the Power-Down function of two passages is selected the position, is 0 o'clock, enables passage, is 1 o'clock, closing passage;
DFS: the output data layout is selected the position, is 0 o'clock, and data output format is 1 o'clock for the scale-of-two of skew, and data output format is the two's complement form;
OTR_A, OTR_B: the Overflow flag of two passages;
MUX_SELECT: data-reusing model selection position, it is 0 o'clock, the A channel data are exported from the B passage, the B channel data is exported from A channel, be 1 o'clock, two channel datas are respectively from separately passage output, when this pin connects clock, two channel datas are with multiplexing output FPDP, and this moment, data output rate was the twice of sampling rate.
SENSE: reference mode is selected the position, and this position is 0 o'clock, uses internal reference voltage, is 1 o'clock, uses external reference voltage.
The principle of AD9248 is to adopt a plurality of low precision flashing type ADC that sampled signal is carried out scalar quantization, and then with quantized result combination at different levels, combines at last high-precision quantification output of formation.Circuit at different levels have respectively the track and hold circuit of oneself, therefore when every grade of circuit is passed to subordinate's circuit to signal, just can accept the higher level and pass the data of coming, every grade of circuit is once sampled and can be finished within a clock period, also just has the problem of a pipelining delay simultaneously.AD9248 receives the CLK signal just to begin to sample, because pipelining delay just can appear at output terminal after the final transformation result of each sampling will be waited for 7 clock period.
Fig. 4 has shown the sampling time sequence figure of AD9248, as shown in Figure 4, begin sampling after, spent 7 cycles just can obtain first sampled data.According to databook, output data delay t
PDMaximal value is 6ns.Corresponding to the 50MHz sampling system, the retention time of data is well-to-do on the middle AD output terminal of a clock period (20ns).
Fig. 5 has shown the interface synoptic diagram of AD9248.The simulating signal input requirements of AD9248 is difference, and therefore, the signal of single-ended input becomes differential signal after signal transformer is processed; And VCom lifts voltage level, and generally getting VCom is 1/2nd supply voltages; For guaranteeing the accuracy of AD conversion, applicable external voltage reference is proper, and Vref is the stable level that is produced by the voltage stabilizing chip; The sampled data output of two passages is stitched together and forms one 32 data, is connected in data bus DM_D[0..31] on; The driving clock signal of two passages of AD9248 provides by CPLD; Power supply sleep mode signal also is connected on the CPLD, accepts the control of CPLD.
In addition, the SRAM that adopts among some embodiment can be IS61LV51216, and IS61LV51216 is the asynchronous CMOS static RAM (SRAM) of 512K16bit of 3.3V power supply, has the characteristics figure of high-speed low-power-consumption.6 have shown the interface synoptic diagram of IS61LV51216.
In addition, the CPLD that adopts among some embodiment can adopt CPLD---the XC95144 of the XC9500XL series of Xilinx company production, XC95144.
In the technical program, then vibration signal carries out pre-service by the vibration signal conditioning module by the vibration detector arrays collection.Wherein, vibration transducer can be selected the LT0106T of Lanace company, and its frequency range is 0.04-1500Hz, and resolution is 0.00002g, and sensitivity is 1000mV/g, and range is 5g.
The vibration signal conditioning module comprises signal acquisition module and signal isolation filter module.Signal acquisition module is mainly used in obtaining simultaneously the output signal of vibration transducer to the vibration transducer power supply; Signal isolation filter module is mainly finished isolation transmission and the filtering of simulating signal, to eliminate under the rugged surroundings electromagnetic signal to the interference of system.Fig. 7 has shown the circuit diagram of signal acquisition module under a kind of embodiment.As shown in Figure 7, signal acquisition module comprises the adjustable voltage stabilizing integrated chip of three ends U1, the LM317 that for example selects, the 3rd port of the adjustable voltage stabilizing integrated chip of this three end U1 connects the positive pole of direct supply, the positive pole of this direct supply is through power filtering capacitor C1, E1 ground connection, connect the first resistance R 1 between the 1st port of the adjustable voltage stabilizing integrated chip of this three end U1 and the 2nd port, the 2nd port of the adjustable voltage stabilizing integrated chip of this three end U1 is successively through the second capacitor C 2 and the second resistance R 2 ground connection, the two ends that are connected across vibration transducer interface J1 after the second capacitor C 2 and the series connection of the second resistance R 2 consist of to exchange to hold and hinder bleeder circuit, the node of the second capacitor C 2 and the second resistance R 2 is the signal output part of vibration transducer, three ends are adjustable, and voltage stabilizing integrated chip U1 and the first resistance R 1 form constant current source, for vibration transducer provides the galvanic current source.
Fig. 8 has shown the circuit diagram of signal isolation filter module in a kind of embodiment.Among Fig. 8, U10 is current drive-type optocoupler HCNR201, its principle of work is, LED is the light of the certain light intensity of emission under the driving of electric current externally, when photodiode PD1, PD2 receive the exciting light that same LED sends, electric current on PD1, the PD2 is identical, can be according to the isolation transmission of above-mentioned characteristic settling signal.U12A is operational amplifier LM358, and it is output as, and LED provides exciting current among the U10, R12, PD1 ,+6V4DCI and-6V4DCI consists of negative-feedback circuit, makes U12A inverting input voltage follow input voltage Signal Out.When input voltage Signal Out changed, U12A changed the electric current output in the LED, equal input voltage Signal Out to the anti-phase input terminal voltage till.+ 5VDC, PD2, R13 and C10 form signal isolation acquisition cuicuit jointly, because the electric current on PD1, the PD2 is identical, R13 chooses the isolation transmission that suitable resistance value gets final product settling signal.U11, R14, R15 consist of in-phase amplifier, and enlargement factor is 2 times, and R11 and C11 consist of low-pass filter, the signal beyond the filtering useful band.
Fig. 9 has shown in a kind of embodiment, the structured flowchart of vibration signals collecting module.As shown in Figure 8, trigger module 3 comprises D/A converter 31 and comparer 32, the input end of comparer 32 is connected with the output terminal of vibration signal conditioning module, the output terminal of comparer 32 is connected with the control signal input end of main control module 5, the input end of multi-channel synchronous A/D converter 4 is connected with the output terminal of signal condition module, the control signal output terminal of main control module 5 is connected with the signal input channel of D/A converter 4, the analog signal output passage of D/A converter 31 is connected with comparer 32, the first data bus of multi-channel synchronous A/D converter 4 links to each other with the data bus of main control module 5, the second data bus of this multi-channel synchronous A/D converter 4 links to each other with the data bus of memory module 7, the passage control interface of main control module 5 is connected with the passage control interface of memory module 7, and main control module 5 also is connected with server by network.Wherein, trigger module 3 is finished the transfinite function of triggering collection of the dynamic setting of vibration signal threshold values and threshold values.
Figure 10 has shown in a kind of embodiment, the circuit diagram of trigger module 3, as shown in figure 10, U20 is SPI interface DA converter, wherein, 1 pin is that digital input port, 2 pin are that input end of clock mouth, 3 pin are the reference voltage input mouth for selecting pin, 6 pin, is connected with C22 with filter capacitor E20.5 pin are the analog output mouth that power port, 4 pin and 7 pin are respectively DA for ground, 8 pin, and its output is behind the low-pass filter that voltage follower and R25, C24, R20, the C21 of U21A and U21B composition form, as the threshold voltage of trigger pip.
Figure 11 has shown in a kind of embodiment, the circuit diagram of the comparer in the trigger module.The threshold values Trigger Function that transfinites is mainly finished by U22A LM393, its 3 pin meets threshold value setting signal VrefChl0, vibration signal AccAnaInput0 delivers to 2 pin of U22A after isolation transmission, filtering, as AccAnaInput0 during greater than VrefChl0, it is low level that U22 makes ARM_TrgCh0, thereby triggers high-speed data acquisition.
Figure 12 has shown in a kind of embodiment, multi-channel synchronous AD converter circuit diagram, and 3,4, No. 5 pins are the over-sampling selecting side among the figure, the over-sampling corresponding with LPC2292 in the main control module selects output pin to link to each other respectively, carries out over-sampling and selects; No. 6 pins are that the AD7606-6 interface mode is selected, and select the parallel output mode when connecing low level, connect high level and select serial output mode, connect low level among the present invention and select parallel mode; Whether No. 7 pins are hung up Low level effective for hanging up pin by master control module controls AD7606-6; No. 8 pins are that RANGE selects input end, connect 100K resistance R 500 ground connection, link to each other with the AD_RangeSel pin of main control module LPC2292 simultaneously, when the RANGE input end is low level, sample range is ± 5V that when the RANGE input end was high level, sample range was ± 10V; No. 23 pins are the VDRIE pin, adopt 3.3V; 9, No. 10 pins are first three road, rear three tunnel sample frequency input pins; No. 11 pin are the RST pin, before the AD7606-6 normal operation, need to carry out reset operation to it, are controlled by main control module; 12,13 pin are respectively read signal input pin and the chip selection signal input pin of AD7606-6 when reading the control data; No. 14 pin are the interrupt output pin, and each sampling is finished, and AD7606-6 will export look-at-me notice LPC2292 sampling and finish; No. 15 pin is FirstData sign pin, is used for serial output mode and plays the mark effect; 44,45 pin are respectively first three road, rear three road reference capacitance pins, meet pin AGND No. 46 after connecing 10uF capacitor C 504, guarantee reference voltage waveform stabilization in the sampling process.
Figure 13 has shown the circuit diagram of the main control module CPU LPC2292 that adopts in a kind of embodiment.Figure 14 has shown the circuit diagram of the memory module IS61WV102416BLL that adopts in a kind of embodiment.By Figure 13 and shown in Figure 14, J40, R40, R41, R41, R45 and C40 form program download interface and the system power-on reset circuit of U40 jointly.42 and 49 pin are the serial communication port, mainly communicate by letter with 61850 stipulations modular converters.33 pin and 99 pin are the trigger pip input port, and when trigger pip was arranged, by LPC2292 log-on data sampling routine, 59,61,68 and 12 pin consisted of the SPI communication port, and master cpu is mainly set threshold values by the SPI port to the output of DA converter.100 pin are that AD changes complete signal, when it is low level, show the AD EOC, and master cpu according to the rules sequential reads the AD conversion value.C43, C44, JT40 and R45 consist of the running clock of master cpu, for system provides stabilizing clock.Exi_DATA0-15 is the system data line.Xi_ADD0-23 is the system address line.Exi_nRD, Exi_nWR are respectively read-write control signal.CS_SRAM and AD_CS are respectively the select lines of memory module and AD converter.61850 stipulations modular converter OK6410 embedded boards are mainly finished the generation of 61850 standard signals, and by network interface Information Monitoring are sent.
The course of work of above-mentioned vibration signals collecting module is: when carrying out the collection of vibration signal, main control module output control signal is to multi-channel a/d converter, multi-channel a/d converter is a plurality of signal sampling channels of gating simultaneously, for example 6, main control module is exported the voltage control signal of certain amplitude according to predefined threshold values simultaneously, be delivered to trigger module and generate threshold voltage, the signal condition module provides steady current for vibration transducer, make normal operation of sensor, be delivered to 6 signal sampling channels of multi-channel a/d converter after the voltage signal process signal condition module of No. 6 vibration transducers, vibration transducer enters trigger module through one tunnel output signal of signal condition module, compare through comparer and threshold voltage, when surpassing threshold voltage, trigger module output gathers and controls signal to main control module, this main control module Vibration on Start-up signals collecting flow process.
Be noted that above enumerate only for specific embodiments of the invention, obviously the invention is not restricted to above embodiment, many similar variations are arranged thereupon.If those skilled in the art all should belong to protection scope of the present invention from all distortion that content disclosed by the invention directly derives or associates.
Claims (10)
1. the power equipment state monitoring system of a multisensor array is characterized in that, comprising:
Several sensor arraies, correspondence gathers several physical parameters respectively, and physical parameter is converted to corresponding physical parameter signal;
Several signal condition modules, its respectively with the corresponding connection of described each sensor array, each physical parameter signal is carried out pre-service;
Several signal acquisition module, its respectively with the corresponding connection of described each signal condition module, gather each through pretreated physical parameter signal, and be converted into corresponding digital signal;
One server, it is connected with described each signal acquisition module by network, receives the digital signal of each signal acquisition module transmission.
2. the power equipment state monitoring system of multisensor array as claimed in claim 1 is characterized in that, described several sensor arraies comprise a superfrequency sensor array, a vibration detector arrays and an AE sensor array; Described several signal condition modules comprise a ultrahigh-frequency signal conditioning module, a vibration signal conditioning module and an AE signal condition module; Described several signal acquisition module comprise a ultrahigh-frequency signal acquisition module, a vibration signals collecting module and an AE signal acquisition module; Described superfrequency sensor array comprises several superfrequency sensors; Described vibration detector arrays comprises several vibration transducers; Described AE sensor array comprises several AE sensors.
3. the power equipment state monitoring system of multisensor array as claimed in claim 2, it is characterized in that, described ultrahigh-frequency signal conditioning module is connected with AE signal condition module: be connected differential amplifier, low-pass filter and the signal isolation circuit that input direction connects successively with the AE signal along ultrahigh-frequency signal, so that ultrahigh-frequency signal and AE signal are amplified and filtering.
4. the power equipment state monitoring system of multisensor array as claimed in claim 2 is characterized in that, described vibration signal conditioning module comprises signal acquisition module and signal isolation filter module:
Described signal acquisition module comprises the adjustable voltage stabilizing integrated chips of three ends (U1), the 3rd port of this three end is adjustable voltage stabilizing integrated chip (U1) connects the positive pole of direct supply, the positive pole of this direct supply is through power filtering capacitor (C1, E1) ground connection, connect the first resistance (R1) between the 1st port of this three end is adjustable voltage stabilizing integrated chip (U1) and the 2nd port, the 2nd port of this three end is adjustable voltage stabilizing integrated chip (U1) is successively through the second electric capacity (C2) and the second resistance (R2) ground connection, the two ends that are connected across vibration transducer interface (J1) after the series connection of described the second electric capacity (C2) and the second resistance (R2) consist of to exchange to hold and hinder bleeder circuit, the node of described the second electric capacity (C2) and the second resistance (R2) is the signal output part of vibration transducer (1), described three ends are adjustable, and voltage stabilizing integrated chip (U1) and the first resistance (R1) form constant current source, for described vibration transducer (1) provides the galvanic current source; Described signal isolation filter module comprises buffer circuit and holds the resistance filtering circuit that described buffer circuit comprises linear optical coupling.
5. the power equipment state monitoring system of multisensor array as claimed in claim 2 is characterized in that, described ultrahigh-frequency signal acquisition module and AE signal acquisition module include:
One AD chip, it is connected with described signal condition module;
One CPLD, it is connected with the AD chip, and control AD chip carries out signals collecting;
One storer, its data bus is connected with the data bus of described CPLD.
6. the power equipment state monitoring system of multisensor array as claimed in claim 5 is characterized in that, described storer has the SRAM storage array.
7. the power equipment state monitoring system of multisensor array as claimed in claim 5 is characterized in that, described AD chip is the double channel A/D chip, and sample frequency is greater than 50MHz.
8. the power equipment state monitoring system of multisensor array as claimed in claim 2 is characterized in that, described vibration signals collecting module comprises: a trigger module, a multi-channel synchronous A/D converter, a main control module and a memory module; Wherein:
Described trigger module comprises D/A converter and comparer, the input end of described comparer is connected with the output terminal of vibration signal conditioning module, the output terminal of comparer is connected with the control signal input end of main control module, the input end of described multi-channel synchronous A/D converter is connected with the output terminal of signal condition module, the control signal output terminal of described main control module is connected with the signal input channel of D/A converter, the analog signal output passage of D/A converter is connected with comparer, the first data bus of multi-channel synchronous A/D converter links to each other with the data bus of main control module, the second data bus of this multi-channel synchronous A/D converter links to each other with the data bus of memory module, the passage control interface of described main control module is connected with the passage control interface of memory module, and described main control module is connected with described server by network.
9. the power equipment state monitoring system of multisensor array as claimed in claim 2 is characterized in that, the number of described vibration transducer is 6, and the number of described superfrequency sensor is 6, and the number of described AE sensor is 6.
10. the power equipment state monitoring system of multisensor array as claimed in claim 2 is characterized in that, the frequency range of described vibration transducer is 0.04-1500Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105740268A CN103063954A (en) | 2012-12-26 | 2012-12-26 | Multi-sensor array monitoring system on states of power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105740268A CN103063954A (en) | 2012-12-26 | 2012-12-26 | Multi-sensor array monitoring system on states of power equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103063954A true CN103063954A (en) | 2013-04-24 |
Family
ID=48106660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105740268A Pending CN103063954A (en) | 2012-12-26 | 2012-12-26 | Multi-sensor array monitoring system on states of power equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103063954A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749468A (en) * | 2015-03-31 | 2015-07-01 | 国家电网公司 | GIS fault diagnosis system and method thereof |
| CN105222826A (en) * | 2014-06-27 | 2016-01-06 | 国家电网公司 | A kind of power distribution network power consumer health index apparatus for evaluating and appraisal procedure |
| CN105700008A (en) * | 2014-11-26 | 2016-06-22 | 国家电网公司 | Cable channel external damage prevention underground sound monitoring early warning application system |
| CN108828313A (en) * | 2018-09-05 | 2018-11-16 | 保定威晟电力设备科技有限公司 | The wireless vector synchronized measurement system of zinc oxide arrester tester |
| CN109084889A (en) * | 2018-08-30 | 2018-12-25 | 华南农业大学 | A kind of vibration signal detection method |
| CN112485539A (en) * | 2020-11-18 | 2021-03-12 | 上海电力大学 | Electromagnetic environment monitoring device and monitoring method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0342597A2 (en) * | 1988-05-16 | 1989-11-23 | Hitachi, Ltd. | Abnormality system for a high voltage power supply apparatus |
| CN2538088Y (en) * | 2002-04-04 | 2003-02-26 | 宋嘉鸿 | Full autoamtic charger with three colour LED indication |
| CN201072435Y (en) * | 2007-06-07 | 2008-06-11 | 福建新大陆电脑股份有限公司 | Logic analyzer |
| CN102072774A (en) * | 2011-01-25 | 2011-05-25 | 西安交通大学 | Single-photon counting system for measuring weak luminescence of dielectric medium |
| JP2012058046A (en) * | 2010-09-08 | 2012-03-22 | Nissin Electric Co Ltd | Abnormality diagnosis device for power device |
| JP2012189513A (en) * | 2011-03-11 | 2012-10-04 | Toshiba Corp | Partial discharge detection sensor, partial discharge detection device and partial discharge detection method |
-
2012
- 2012-12-26 CN CN2012105740268A patent/CN103063954A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0342597A2 (en) * | 1988-05-16 | 1989-11-23 | Hitachi, Ltd. | Abnormality system for a high voltage power supply apparatus |
| CN2538088Y (en) * | 2002-04-04 | 2003-02-26 | 宋嘉鸿 | Full autoamtic charger with three colour LED indication |
| CN201072435Y (en) * | 2007-06-07 | 2008-06-11 | 福建新大陆电脑股份有限公司 | Logic analyzer |
| JP2012058046A (en) * | 2010-09-08 | 2012-03-22 | Nissin Electric Co Ltd | Abnormality diagnosis device for power device |
| CN102072774A (en) * | 2011-01-25 | 2011-05-25 | 西安交通大学 | Single-photon counting system for measuring weak luminescence of dielectric medium |
| JP2012189513A (en) * | 2011-03-11 | 2012-10-04 | Toshiba Corp | Partial discharge detection sensor, partial discharge detection device and partial discharge detection method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222826A (en) * | 2014-06-27 | 2016-01-06 | 国家电网公司 | A kind of power distribution network power consumer health index apparatus for evaluating and appraisal procedure |
| CN105222826B (en) * | 2014-06-27 | 2018-05-18 | 国家电网公司 | A kind of power distribution network power consumer health index apparatus for evaluating and appraisal procedure |
| CN105700008A (en) * | 2014-11-26 | 2016-06-22 | 国家电网公司 | Cable channel external damage prevention underground sound monitoring early warning application system |
| CN105700008B (en) * | 2014-11-26 | 2019-05-14 | 国家电网公司 | A kind of anti-external force destruction rock noise monitoring and warning application system of cable passage |
| CN104749468A (en) * | 2015-03-31 | 2015-07-01 | 国家电网公司 | GIS fault diagnosis system and method thereof |
| CN104749468B (en) * | 2015-03-31 | 2017-09-19 | 国家电网公司 | A kind of GIS fault diagnosis systems and its method |
| CN109084889A (en) * | 2018-08-30 | 2018-12-25 | 华南农业大学 | A kind of vibration signal detection method |
| CN108828313A (en) * | 2018-09-05 | 2018-11-16 | 保定威晟电力设备科技有限公司 | The wireless vector synchronized measurement system of zinc oxide arrester tester |
| CN108828313B (en) * | 2018-09-05 | 2024-01-30 | 保定威晟电力设备科技有限公司 | Wireless vector synchronous measurement system of zinc oxide arrester tester |
| CN112485539A (en) * | 2020-11-18 | 2021-03-12 | 上海电力大学 | Electromagnetic environment monitoring device and monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103063954A (en) | Multi-sensor array monitoring system on states of power equipment | |
| CN104483011B (en) | A kind of on-line checking of rotating machinery multi-channel Vibration Signal and analysis system and method | |
| CN101793933B (en) | Online measuring system for contact resistors of electric connector | |
| CN101715591A (en) | Multi-channel wireless measuring system with separated sensor interface module | |
| CN201654155U (en) | Power quality monitoring management terminal | |
| CN104569571A (en) | High-speed multichannel current-voltage multiplexing collection unit and data collection method | |
| CN1321315C (en) | Flexible strain signal spot colletion system | |
| CN102636289A (en) | Transformer winding temperature measuring device based on fluorescent fiber technique | |
| CN105527893B (en) | A kind of anti-interference multichannel analog amount sample circuit and method | |
| CN104965462A (en) | Sensing detection system | |
| CN206858674U (en) | A kind of aluminium electrolysis anode guide rod distributed current Detection ＆ Controling apparatus and system | |
| CN117288316A (en) | Vibration signal acquisition method for distributed wireless synchronous networking | |
| CN103616064A (en) | Long-table-face dynamic rail weighbridge weighing system | |
| CN101452048B (en) | Integrated circuit chip temperature test device and method | |
| CN210666477U (en) | DCS with power failure diagnosis function | |
| CN205374585U (en) | Current collection device | |
| CN207352394U (en) | A kind of data acquisition device of recording instrument without paper | |
| CN107219392B (en) | Real-time current signal data processing system | |
| CN202582781U (en) | Transformer winding temperature measuring device based on fluorescent optical fiber technology | |
| CN106501749A (en) | A kind of CT transient characterisitics and actual remanent magnetism detecting system | |
| CN210719453U (en) | Thermal resistance temperature measuring device based on RS485 bus | |
| CN113739825A (en) | Sensor with fault self-checking function | |
| CN103868617A (en) | Platinum resistor temperature measuring circuit | |
| CN202217012U (en) | Microcurrent detection module | |
| CN202110240U (en) | Switch cabinet current fault detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |