CN203965533U - A kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument - Google Patents
A kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument Download PDFInfo
- Publication number
- CN203965533U CN203965533U CN201420211779.7U CN201420211779U CN203965533U CN 203965533 U CN203965533 U CN 203965533U CN 201420211779 U CN201420211779 U CN 201420211779U CN 203965533 U CN203965533 U CN 203965533U
- Authority
- CN
- China
- Prior art keywords
- dsp
- chip
- module
- circuit
- data
- 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.)
- Expired - Lifetime
Links
- 238000005070 sampling Methods 0.000 claims abstract description 97
- 230000015654 memory Effects 0.000 claims abstract description 26
- 230000003993 interaction Effects 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims description 58
- 238000007405 data analysis Methods 0.000 claims description 50
- 238000004891 communication Methods 0.000 claims description 43
- 239000004973 liquid crystal related substance Substances 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 22
- 238000004458 analytical method Methods 0.000 abstract description 19
- 238000007726 management method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 14
- 238000003745 diagnosis Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 230000003750 conditioning effect Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model provides a kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument based on double T MS320F2812, this instrument is for carrying out continuous on-line monitoring and record to the energy consumption data of individual line subscriber, record data are imported in removable memory by external interface simultaneously, and through upper computer software, carry out labor and obtain individual line subscriber energy-saving potential report, the two DSP frameworks of the utility model based on up-to-date, high-precision A/D Sampling techniques, large capacity storage technology and friendly human-computer interaction technology, and adopt the measurement means of science, guarantee the automatic monitoring record of the accurate real-time online of user's energy data to be measured, the utlity model has sample rate fast, computational accuracy is high, portable easy to operate, the features such as intellectuality is strong, this utility model has telecommunications functions simultaneously, can serve more high-rise business information analysis and management system.
Description
Affiliated technical field
The utility model relates to the diagnosis of individual line subscriber energy-saving potential and power quality harnessed synthetically field, particularly relates to a kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument based on double T MS320F2812.
Background technology
Economizing on energy and electricity diagnosis is as the tentative diagnosis of excavating for business electrical situation and energy conservation potential in energy auditing, can better judge that enterprise produces power consumption, excavates scientific and reasonable electricity consumption to enterprise's energy conservation potential, focus on the targets such as power quality and Electrical Safety, be significant.
The data acquisition system (DAS) of large user's loaded termination of the marketing department of grid company can obtain user's whole electricity consumption situation at present, but large user's terminal cannot be collected the detailed electricity consumption situation of user's interior distribution system and load.After visiting in a large number investigation early stage, find, the distribution system of most large users inside has only been joined a small amount of electric simulation instrument and without any memory function, has only been had minority advanced person's large enterprise inside to have comparatively complete electric monitoring and data acquisition system (DAS).
Simultaneously, at the U.S. Fluke435 using on the market and day, put the general price of the electric energy quality monitors such as HOIKI3196 all seven or eight ten thousand yuan of left and right, be unfavorable for that general small enterprise carries out energy-saving potential diagnosis and power quality harnessed synthetically, therefore can not on market, promote well.A kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument based on two DSP of utility model, carries out long-time Real-Time Monitoring and record to user's low-pressure side distribution system power consumption data, for upper computer software carries out analyzing and diagnosing, provides sufficient Data support.Utilize two DSP interaction data treatment technologies, modern power electronics technology, high-precision A/D Sampling techniques, man-machine interaction friendly interface technology, large capacity storage technology etc. simultaneously, make that this instrument has that cost is low, portability is convenient, sampling precision is high, calculatings is accurate, strong operability, easily observation, can ultra-long time continuous recording, the feature such as practical, can effectively solve individual line subscriber energy-saving potential and diagnose and the too high problem of power quality harnessed synthetically input cost.
Based on this, the utility model provides a kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument based on double T MS320F2812.
Utility model content
The utility model provides a kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument based on double T MS320F2812, greatly reduce the cost of the diagnosis of individual line subscriber energy-saving potential and power quality harnessed synthetically aspect, increase substantially the efficiency of electric energy-saving diagnostic work and power quality harnessed synthetically, the level of informatization and automaticity.
Individual line subscriber energy-saving potential and a quality of power supply intelligent diagnosing instrument, it comprises removable memory and the data acquisition unit being connected successively, data analysis unit, DSP peripheral functional modules; Removable memory is connected to described data analysis unit; Data acquisition unit is connected to individual line subscriber circuit to be measured;
Described data acquisition unit comprises sensing module, signal condition module and A/D sampling module;
Described data analysis unit comprises 1#DSP data analysis chip and 2#DSP data analysis chip, and wherein, 1#DSP data analysis chip is connected to A/D sampling module; 2#DSP data analysis chip is connected to 1#DSP data analysis chip by SPI serial communication interface;
Described DSP peripheral functional modules comprises peripheral interface module, DSP peripheral expansion module, data read-write module and human-computer interaction module, and DSP peripheral functional modules is connected to the 2#DSP data analysis chip of described data analysis unit;
Described removable memory is connected to the peripheral interface module in DSP peripheral functional modules.
Further, described data acquisition unit comprises sensing module, signal condition module and A/D sampling module;
Wherein, sensing module adopts Hall element CLSM-10mA, is used for high voltage transitions to become low voltage;
Signal condition module adopts frequency overlapped-resistable filter, OP4227 operational amplifier, comparer, phase-locked loop circuit, sampling holder and A/V change-over circuit, and this module is carried out frequency multiplication 256 times to sample frequency;
A/D sampling module adopts MAX1324 chip, and 14,8 passages, synchronized sampling ADC converter, has excellent dynamic perfromance and DC characteristic.
Further, the 1#DSP data analysis chip in described data analysis unit and 2#DSP data analysis chip adopt the TMS320F2812 chip that YiTI company produces;
Wherein, between 1#DSP data analysis chip and 2#DSP data analysis chip, by SPI serial communication interface, connect;
1#DSP data analysis chip is connected to A/D sampling module, and 2#DSP data analysis chip is connected to described DSP peripheral functional modules.
Further, described DSP peripheral functional modules comprises peripheral interface module, DSP peripheral expansion module, data read-write module and human-computer interaction module;
Wherein, peripheral interface module mainly adopts RS-232 interface, DC+5V interface, SD card interface and USB interface;
DSP peripheral expansion module mainly comprises RS232 telecommunication circuit, peripheral clock circuit, extend out RAM circuit and extend out FLASH circuit, peripheral RS232 circuit adopts UART chip TL16C550 and SP3232 chip, peripheral clock circuit adopts the serial clock chip DS1305 of Dallas company, extend out RAM circuit and adopt IS61LV25616AL chip, extend out FLASH circuit and adopt SST39VF800 chip;
Data read-write module mainly comprises reading and writing data circuit, SD card interface circuit and USB flash disk interface circuit, and reading and writing data circuit adopts CH376 file management chip, is connected with described 2#DSP;
Human-computer interaction module mainly comprises level shifting circuit, display module and keyboard input circuit, and level shifting circuit adopts 74ALVC16245 chip, and display module adopts LCD12864 liquid crystal.
Further, between described 1#TMS320F2812 chip and 2#TMS320F2812 chip, pass through the high-speed serial communication between high-speed serial communication Interface realization DSP and external unit or another DSP.
Further, utilize IS61LV25616AL chip and SST39VF800 chip to expand respectively RAM and the FLASH of described 1# and 2#DSP, make DSP can carry out large capacity program, storage Large Volume Data.
Further, removable memory adopts large capacity SD card or USB flash disk, utilizes file management control chip CH376 read and write the monitoring record data volume at least one week and be stored in SD card or USB flash disk.
Individual line subscriber energy-saving potential based on double T MS320F2812 and the quality of power supply intelligent diagnosing instrument of this utility model have following advantage:
1, this utility model is based on two DSP data chip TMS320F2812 frameworks, and a DSP is specifically designed to control data acquisition, and DSP is specifically designed to data are carried out analytical calculation, shown and store control in real time.Two DSP share out the work and help one another, by SPI high-speed serial communication interface, carry out the communication between 1#DSP and 2#DSP, improve data acquisition, analyze and processing speed, guarantee high precision, fast detecting and the every data of processing, comprise three-phase and zero line electric current and voltage, power factor (PF), active power, reactive power, applied power, voltage deviation, frequency departure, fundamental power factor, imbalance of three-phase voltage, three-phase current unbalance, each electric current and voltage harmonic content, the parameters of electric power such as each harmonic aberration rate, for individual line subscriber energy-saving potential diagnosis and power quality harnessed synthetically analysis software provide accurate, detailed supported data, abundant excavation individual line subscriber energy-saving potential and solution power quality problem are had great importance.
2, the utility model adopts MAX1324 chip as AD sampled data chip, measuring accuracy is high, slewing rate is fast, greatly reduce switching time, and reduced the complexity of AD conversion chip hardware setting and Software for Design, by 1#DSP, AD sampling A/D chip is implemented to synchronous ADC conversion and control, guarantee that sample-synchronous is carried out and 128 points of sampling in one-period.
3, utilize zero balancing and the phase locking frequency multiplying method of sampling, can eliminate asynchronous sampling and the impact of period measurement error on measuring accuracy.
4, from cost control and system optimization, consider chip type selecting, utilize two DSP frameworks, make full use of DSP Resources on Chip and peripheral hardware resource, make instrument brief efficient, possess the diagnosis of the individual line subscriber of measurement energy-saving potential and the required supported data of power quality harnessed synthetically, compare Fluke on the market series and day and put 3196 serial power quality analyzers, cost many.
5, this utility model adopts large capacity SD card or USB flash disk, flexible and changeable, and removable, the above individual line subscriber low-pressure side distribution system online monitoring data of capacity storage one week greatly, make the copy of Monitoring Data more convenient, for upper computer software provides the record data of enough aspects such as user power utilization situation, the quality of power supply and energy consumption, and realize the diagnosis of individual line subscriber energy-saving potential and electric energy and comprehensive quality control local analysis, for individual line subscriber enterprise, produce, tool has very important significance.
Accompanying drawing explanation
Fig. 1 is the individual line subscriber energy-saving potential based on double T MS320F2812 of an embodiment and the system principle diagram of quality of power supply intelligent diagnosing instrument.
embodiment
Below in conjunction with accompanying drawing, to this practicality, newly the individual line subscriber energy-saving potential based on double T MS320F2812 and the embodiment of quality of power supply intelligent diagnosing instrument are described in detail.
Fig. 1 is the individual line subscriber energy-saving potential based on double T MS320F2812 of an embodiment and the system principle diagram of quality of power supply intelligent diagnosing instrument, shown in Figure 1.
Utility model is by data acquisition unit, data analysis unit, and DSP peripheral functional modules, four parts of removable memory form.Wherein, data analysis unit comprises sensing module, signal condition module and A/D sampling module; Data analysis unit comprises 1# and 2#DSP data analysis chip; DSP peripheral functional modules comprises peripheral interface module, DSP peripheral expansion module, data read-write module and human-computer interaction module.The utility model is by sensing module, gather individual line subscriber low-pressure side distribution system circuit three-phase voltage to be measured, electric current and zero line electric current and voltage, and carry out anti-aliasing filter, operation amplifier, cross a series of processing such as zero balancing, synchronizing and frequency doubling, sampling maintenance through signal condition module, in the process of processing, three-phase voltage after anti-aliasing filter is processed and a zero line voltage signal part are through OP4227 operational amplifier, a part is through comparer and phaselocked loop, and jointly sends into the sampling holder maintenance of sampling; Three-phase after anti-aliasing filter is processed and zero line voltage signal are also delivered to sampling holder after OP4227 operational amplifier is processed, and after sampling holder is processed, with 4 road voltage signals (UA, UB, UC, UN), send into tetra-voltage analog input channels of CH4, CH5, CH6, CH7 of the MAX1324 sampling A/D chip of A/D sampling module; And three-phase after sampling holder is processed and neutral line current signal become four-way voltage-type signal (M_IA, M_IB, M_IC, M_IN) after carrying out A/V conversion process by A/V change-over circuit, and be sent to tetra-current analog amount input channels of CH0, CH1, CH2, CH3 of the MAX1324 sampling A/D chip of A/D sampling module.Zhe Ba road analog input signal (UA, UB, UC, UN, M_IA, M_IB, M_IC, M_IN) is after high precision fast A/D conversion, with 12 (DB0 ~ DB11) digital signals, be sent to the 1#DSP in data analysis unit, the I/O mouth of 1#DSP sends control signal and controls voltage and current enlargement factor by stripping and slicing control circuit simultaneously, A/D sampling module is carried out to synchronous A/D conversion and control simultaneously.This 12 railway digital signal is delivered to 2#DSP by high speed SPI serial communication interface by 1#DSP, by 2#DSP, control the 74ALVC16245 level shifting circuit that this 12 railway digital signal is sent into human-computer interaction module, these digital signals latch buffered in this circuit, finally by Liquid Crystal Module, show the electric parameters parameter that these are basic, by button inputting circuits, operate liquid crystal display and preservation, instrument parameter is set simultaneously.This 12 position digital signal is stored in and extends out RAM(and realize by IS61LV25616 chip through 2#DSP chip controls in addition) in, and by controlling CH376 file management chip in data read-write module by extending out reading and writing data in RAM to SD card or USB flash disk, extend out FLASH(simultaneously and realize by SST39VF800 chip) be used for storing large calculation of capacity handling procedure.Dsp chip improves outside precisely clock through DS1305 clock circuit, for apparatus measures record provides precise time; #DSP chip carries out RS232 data communication through SP3232 communication chip simultaneously, contacts upper machine data management system.Through SPI high-speed serial communication interface, 1#DSP passes to 12 position digital signals of 2#DSP, after digital filtering, carry out Fast Fourier Transform (FFT) (FFT) Treatment Analysis, processing signals is decomposed into each harmonic voltage and current, each electric parameters parameter that Treatment Analysis obtains the on the one hand LCD12864 Liquid Crystal Module in human-computer interaction module shows, and reads and writes in outside SD card or USB flash disk removable memory on the other hand through CH376 file management chip from extend out RAM.So, by IS61LV25616 chip and SST39VF800 chip, expand RAM and the FLASH of 2#DSP, so that storage Large Volume Data and calculation procedure.The large capacity storage function of SD card or USB flash disk guarantees the data volume that instrument can at least one week of continuous recording, makes this instrument have the function that can plug mobile storage simultaneously.
2#DSP carries out real-time computing to the data from 1#DSP, can realize three-phase voltage, current signal real-time follow-up, in real time calculating voltage effective value, current effective value, electric current and voltage tri-phase unbalance factor, active power, reactive power, applied power, frequency, power factor and analysis stable state harmonic wave.These electric parameters parameters import in the analysis of host computer energy-saving potential and power quality harnessed synthetically simulation software through the GRPS of communication module radio communication or through SD card, USB flash disk, this software is write based on Matlab emulation platform, can derive the comprehensive analysis report of user's energy-saving potential analysis report and the quality of power supply, comprise voltage fluctuation and flickering, voltage deviation, 1 ~ 25 electric current and voltage harmonic wave, the power quality index control measures such as three-phase imbalance.
The utility model is based on two DSP frameworks, and adopt modern power electronics technology, high-precision A/D Sampling techniques, man-machine interaction friendly interface technology, large capacity storage technology etc., make that this instrument has that cost is low, portability is convenient, sampling precision is high, calculatings is accurate, strong operability, easily observation, can ultra-long time continuous recording, the feature such as practical, can effectively solve individual line subscriber energy-saving potential and diagnose and the too high problem of power quality harnessed synthetically input cost
Individual line subscriber energy-saving potential based on double T MS320F2812 and quality of power supply intelligent diagnosing instrument comprise 4 parts: data acquisition unit, data analysis unit, DSP peripheral functional modules and removable memory.Wherein, data acquisition unit comprises sensing module, signal condition module and A/D sampling module; Data analysis unit comprises 1#DSP and 2#DSP data analysis chip; DSP peripheral functional modules comprises peripheral interface module, DSP peripheral expansion module, data read-write module and human-computer interaction module; Removable memory comprises SD card or USB flash disk.Concrete each functions of modules describes in detail as follows.
Sensing module gathers circuit three-phase voltage to be measured, electric current and zero line voltage, electric current, and high voltage, large current transitions are low-voltage, little electric current, and are incorporated into instrument sampling plate;
Signal condition module is to the 4 road low voltage signals from sensing module, little current signal carries out anti-aliasing filter and operation amplifier, wherein 4 road voltage signals are delivered to sampling holder after anti-aliasing filter and operation amplifier, 4 road current signals are after anti-aliasing filter and operation amplifier, through comparer and phaselocked loop, carry out after synchronizing and frequency doubling is processed for 256 times sending into sampling holder, the frequency-doubled signal obtaining is as the cycle control signal of A/D sampling, realized and in a power frequency period, gathered 256 points, be 12.8kSPS, and between these 256 points, are sync interval samplings, real-time and the reliability of measurement data have been guaranteed.From sampling holder 4 road voltage signals out, enter A/D sampling A/D chip, 4 road current signals convert 4 road voltage-type signals to through A/V change-over circuit, and enter A/D sampling A/D chip.Therefore, signal condition module realizes to 4 road voltages, current signal is carried out anti-aliasing filter, operation amplifier, crosses and with 8 road voltage-type signals, send into A/D sampling A/D chip after a series of processing such as zero balancing, synchronizing and frequency doubling, sampling maintenance and carry out ADC conversion;
A/D sampling module is converted to 12 position digital signal DB0 ~ DB11 to 8 channel analog signals from signal condition module.1#DSP synchro control A/D sampling A/D chip, guarantees at 256 points of one-period inter-sync sampling, thereby makes measurement data have real-time effectiveness.
1# DSP controls sheet choosing and the read-write of A/D sampling A/D chip, A/D sampling A/D chip is implemented to synchronous conversion and control, make 256 points of one-period inter-sync sampling, the order of magnitude of the current signal detecting according to 1#DSP simultaneously, control instrument amplifier switches to corresponding enlargement factor and amplifies, by the change enlargement factor that gains, realize range and switch, guarantee measure linear degree and the precision of the current signal of each order of magnitude.1#DSP, when controlling electric current and voltage sampling channel and A/D sampling A/D chip in real time, is delivered to 2#DSP by 14 digital signals from A/D sampling A/D chip by SPI high-speed synchronous communications serial interface and carries out next step computing.
2#DSP carries out digital filtering and fast Fourier (FFT) Treatment Analysis to 12 position digital signals from 1#DSP, can realize three-phase voltage, current signal real-time follow-up, in real time calculating voltage effective value, current effective value, electric current and voltage tri-phase unbalance factor, active power, reactive power, applied power, frequency, power factor and analysis stable state harmonic wave.These basic electric parameters parameters show by the Liquid Crystal Module in human-computer interaction module on the one hand, are stored in and extend out in RAM on the other hand, and read and write in outside removable memory by CH376 file management chip.
Peripheral interface module will provide various interface function for the utility model.Wherein, SD card interface is used for inserting SD card, storage data; USB interface is inserted the removable memories such as USB flash disk; RS232 Interface realization data communication function; DC+5V interface provides ﹢ 5V direct supply for instrument, guarantees that instrument normally works.
DSP peripheral expansion module major function comprises, the one, utilize UART chip TL16C550 and SP3232 chip to realize RS232, RS485 wire communication mode and GPRS wireless communication mode, for providing reliably between Digital Circuit-terminating Equipment (DCE) and data terminal equipment (DTE), interface service flexibly; The 2nd, the serial realtime clock chip DS1305 that adopts Dallas company provides outside precisely clock signal for instrument; The 3rd, utilize IS61LV25616AL chip and SST39VF800 chip expansion RAM and FLASH respectively, make 2#DSP capacity storage Monitoring Data and calculation procedure greatly;
Data read-write module adopts CH376 file management chip to be connected with 2#DSP, realization is controlled sheet choosing, the read-write of CH376 chip, to extend out reading and writing data in RAM in removable memory, wherein, CH376 file management chip is connected with described USB flash disk interface circuit, its D-and the read-write of D+ port controlling USB flash disk; CH376 file management chip is connected with described SD card interface circuit, and its SD_CS, SD_D0, SD_CK, the read-write of SD_DI port controlling SD card, be stored in 2#DSP monitoring record and computational data in USB flash disk and SD card respectively.
In human-computer interaction module, level shifting circuit input interface is connected to described 2#DSP chip, and its output interface is connected to Liquid Crystal Module.Button inputting circuits is connected to level shifting circuit input interface, controls display module.Liquid Crystal Module is connected to level shifting circuit.The digital signal that will be shown by level shifting circuit output, and show by Liquid Crystal Module, these digital signals that show comprise various to the useful electric data of analysis user power consumption situation, comprise three-phase voltage, three-phase current, three phase power, power factor etc.
Removable memory comprises SD card and USB flash disk, and capacity storage instrument monitoring record data greatly, for upper computer software provides powerful basic data support.
Each functions of modules is introduced.Between modules, work in coordination, guarantee individual line subscriber low-pressure side distribution system power consumption data and power quality data real-time storage and be uploaded to host computer energy conservation potential to analyze and power quality harnessed synthetically simulation software, draw fast user's energy-saving potential analysis report and power quality harnessed synthetically analysis report.
In the utility model, between 1#DSP and 2#DSP, with serial communication mode, carry out data transmission.Two DSP move under work in series mode, and this work in series mode can be passed through DSP serial ports or DMA, also can pass through dual port RAM, FIFO, and even public internal memory is realized.Also can own extended serial port and DMA passage, and dual port RAM, FIFO and public internal memory, be all generally to be formed by user's expansion.Under serial communication mode, utilize dsp chip itself with serial port resource communicate.This kind of communication mode connects simply, and strong security, does not increase any fringe cost.Communication connection between 2 controllers and the functional block diagram of using.SPI and two kinds of serial communication interfaces of SCI between 1#DSP and 2#DSP are described.
SPI is a high-speed serial communication interface, can realize the high-speed serial communication between DSP and external unit or another DSP.In application, often use the shift register of SPI interface and expanding peripherals, the peripheral communications such as LCD demonstration and ADC, also can adopt master/slave pattern to realize the communication between multiprocessor.
SPI interface has advocates peace from 2 kinds of operator schemes.Main controller controls SPICLK signal, its log-on data transmission at any time.
Be operated under holotype, SPI provides clock at SPICLK pin for whole serial communication network.Data are exported from SPISIMO pin, and latch the data of inputting on SPISOMI pin.SPIBRR register is determined the speed of the data transmission of communication network, by SPIBRR register, can configure 126 kinds of different data transmission rates.Write data to SPIDAT or SPITXBUF register, the data that start on SPISIMO pin send, and that first send is highest significant position (MSB).Meanwhile, the data of reception move into the least significant bit (LSB) of SPIDAT by SPISOMI pin.After transferring specific figure place, the data that receive are sent to SPIRXBUF, in order to CPU, read.
From pattern, SPISOMI pin is data output pin, and SPISIMO pin is data input pin.SPICLK is the input of serial-shift clock.When the suitable clock edge of the SPICLK signal from SPI equipment Inspection arrival autonomous controller, the data that write SPIDAT or SPITXBUF register are sent on network.The all displacements that send character go out after SPIDAT register, and the data that are written to SPITXBUF register will be sent to SPIDAT register.In order to receive data, from SPI equipment, wait for that master controller sends SPICLK signal, is then moved into the data on SPISIMO pin in SPIDAT register.
Serial communication interface SCI adopts the asynchronous serial communication interface of dual-wire communications, the UART asynchronous communication model of support standard, and adopt NRZ (no-return-zero) data layout, can communicate by serial line interface and DSP or other asynchronous peripheral.SCI receiver and transmitter have independent enable and the interrupt bit of oneself, can independently operate, and under full-duplex mode, also can operate simultaneously.For guaranteeing data integrity, SCI module is interrupted, polarity, is transfinited and error-detecting the data that receive.By the baud rate control register to 16, programme, configure different SCI traffic rates.SCI module is supported multiprocessor communication, has 2 kinds of communication protocols: idle line multi-processor mode and address bit multi-processor mode, these 2 kinds of agreements allow to carry out active data transmission between multiprocessor.Meanwhile, SCI also provides Universal Asynchronous Receiver & transmission (UART) communication pattern, can communicate with the multiple peripheral hardware with standard serial port.Here introduce no longer in detail.
This schematic diagram detail display instrument work first half be the principle of signal sampling, the sampling of this part signal comprises sensing module, signal condition module, A/D sampling module and 1#DSP data analysis chip.The total principle of work of this part is described as: by described sensing module, gather individual line subscriber low-pressure side distribution system circuit three-phase voltage to be measured, electric current and zero line voltage, electric current, and carry out anti-aliasing filter, operation amplifier, cross a series of sampling conditioning such as zero balancing, synchronizing and frequency doubling, sampling maintenance processing through signal condition module, after processing, three-phase voltage is sent into tetra-voltage analog input channels of CH4, CH5, CH6, CH7 of the MAX1324 sampling A/D chip of A/D sampling module after sampling holder is processed with 4 road voltage signals (UA, UB, UC, UN); And three-phase current signal after sampling holder is processed becomes the voltage-type signal (M_IA, M_IB, M_IC, M_IN) of four-way after carrying out A/V conversion by A/V change-over circuit and be sent to tetra-current analog amount input channels of CH0, CH1, CH2, CH3 of the MAX1324 sampling A/D chip of A/D sampling module.Zhe Ba road analog input signal (UA, UB, UC, UN, M_IA, M_IB, M_IC, M_IN) is sent to 1#DSP core data process chip through high-precision rapid A/D conversion Hou Yi 12 tunnels (D1-D12) digital signal, after 1#DSP chip carries out a series of processing controls, by SPI high-speed serial communication interface, sends into the 2#DSP analysis that is for further processing.
Described sensing module comprises current clamp (containing AGND), voltage clamp (containing earth terminal UN), Hall element, magnifier and control switching circuit.Wherein, current clamp adopts KVL type current clamp, and electric current no-load voltage ratio is 4000:1, and pincers are to the three-phase bus of circuit to be measured, and ground current pincers pincers are to line neutral to be measured, and line current flow direction and current clamp positive dirction meet the right-hand rule; Voltage clamp is selected 50A type spring clamp, for introducing circuit three-phase voltage to be measured to instrument, is connected on the bus bar of circuit to be measured, and ground voltage clamping connection is to the earth terminal of equipment under test; Hall element adopts JLB-16 type, is used for high voltage to convert low-voltage to, and this linear sensor output, high precision, fast response time, antijamming capability are strong, are connected to three-phase voltage folder and three-phase current clamp signal output terminal; Control switching circuit, be connected to magnifier, the order of magnitude of current signal can be detected according to 1#DSP core data analysis chip, control instrument amplifier switches to corresponding enlargement factor and amplifies, by the change enlargement factor that gains, realize range and switch, guarantee measure linear degree and the precision of the current signal of each order of magnitude; Magnifier, be connected between voltage current transformer and frequency overlapped-resistable filter, there is the high and low power consumption of precision, common-mode rejection ratio is high, working band is wide feature, adopt the mode of multistage amplification, filtering, to current signal amplify step by step, filtering step by step, effectively suppress the impact of undesired signal and noise, improve precision and the signal to noise ratio (S/N ratio) of sampling.
Described signal condition module comprises: frequency overlapped-resistable filter, OP4227 operational amplifier, comparer, phaselocked loop, sampling holder, A/V change-over circuit etc.Wherein, frequency overlapped-resistable filter, operational amplifier, sampling holder form voltage signal conditioning circuit; Frequency overlapped-resistable filter, comparer, phaselocked loop, operational amplifier, A/V change-over circuit form current signal conditioning circuit.Voltage signal conditioning circuit, carries out anti-aliasing low-pass filtering, operation amplifier and sampling to three-phase voltage signal and keeps processing.Voltage signal band after processing powers on, and crimping earth signal UN is common forms 4 road voltage signals, is input to A/D sampling A/D chip; Meanwhile, by frequency overlapped-resistable filter, OP4227 operational amplifier, sampling holder, form a road current signal conditioning circuit.From frequency overlapped-resistable filter current signal out, after comparer and phaselocked loop, be input in sampling holder again, thereby form another road current signal conditioning circuit.Two-way current signal is input to A/V change-over circuit jointly after sampling holder keeps.Inner structure is described below.
Wherein, frequency overlapped-resistable filter adopts 4 rank Butterworth low-pass filters, and is connected to sampling holder by operational amplifier; Operational amplifier adopts OP4227 operation amplifier chip, and the three-phase voltage current signal of processing is after filtering carried out to operation amplifier processing, guarantees accurately sampling; Comparer adopts zero passage comparator circuit, and frequency multiplication of phase locked loop circuit consists of CD404, CD4040, and CD4046 is universal CMOS phase-locked loop intergrated circuit, linear voltage controlled oscillator, 2 phase comparators and low-pass filter circuit, consists of.By the frequency division effect of CD4040 chip, make this frequency multiplication of phase locked loop circuit to carrying out real-time follow-up from zero passage comparator circuit pulse voltage signal out, when tested voltage signal frequency change, circuit is from motion tracking quick lock in signal, guarantee all the time sample frequency by 256 times of survey line frequency; A/V change-over circuit comprises OP4227 operational amplifier and A/V switch, for the three-phase current signal that sampling is kept out, converts voltage-type channel signal to; A/V switch adopts CD4052 chip, controls current mode signal to the conversion of voltage-type signal, to be sent to A/D sampling module, carries out ADC conversion.
Described A/D sampling module mainly comprises: A/D sampling A/D chip.This A/D sampling A/D chip adopts MAX1324 chip, is 8 input channels, 14 high speeds, synchronized sampling ADC converter, is connected between signal condition module and 1#DSP.Its feature is: can provide ± 5V or 0 to+5V simulation discrepancy scope, and the overvoltage protection of can provide ± 16.5V, has dynamic perfromance and acquisition precision that switching rate is fast, excellent; Having independently sampling/maintenance (T/H) circuit samples for each passage provides simultaneously; Sample rate is high, and the time of conversion 8 passages can reach 3.8 us, and the handling capacity of every passage reaches 250kps; Bipolarity input, without negative supply, provide+16.5V overvoltage protection; Have that advanced person/first going out (FIFO) function can reduce interface overhead, and can between EOC or conversion, read transformation result; Without calibration, 14 of 16.6MHz can directly be connected with high-speed CPU for two-way simultaneous interface; The S/H that inner integrated bandwidth is 10MHz ,+2.5V reference voltage, internal clocking, 8 * 14 configuration registers for SRAM and gating sampling channel etc.; Dynamic perfromance: SFDR=90dBc, SINAD=76.5dB, DC precision is ± 2LSB INL, ± ILSBDNL; Can be operated in expansion level temperature range (40 ℃ ~+85 ℃).
MAX1324, as the kernel processor chip of this A/D sampling module, can be converted to 12 position digital signals by 8 channel analog signals.The analog input signal of 8 passages is M_IA, M_IB, M_IC, M_IN and CH_UA, CH_UB, CH_UC, CH_UN, is input to respectively CH0 to the CH7 passage of MAX1324 chip, quick sampling performance due to MAX1324, guarantee the real-time effectiveness of measurement data, by 1#DSP, controlled sheet choosing and the read-write of MAX1324, by DSP data analysis chip, guaranteed 256 points of one-period inter-sync sampling.
Data sampling schematic diagram also comprises: 1#DSP.1#DSP adopts TMS320F2812 data analysis chip, is connected with described A/D sampling A/D chip, is connected with 2#DSP simultaneously.1#DSP major function comprises: the one, control sheet choosing and the read-write of A/D sampling A/D chip, and A/D sampling A/D chip is implemented to synchronous conversion and control, make 256 points of one-period inter-sync sampling; The 2nd, according to the order of magnitude of the current signal that detects, control instrument amplifier switches to corresponding enlargement factor and amplifies, and by the change enlargement factor that gains, is realized range and is switched, and guarantees measure linear degree and the precision of the current signal of each order of magnitude; The 3rd, when controlling electric current and voltage passage enlargement factor and A/D sampling A/D chip in real time, by SPI high-speed synchronous communications serial interface, digital signal transfers is carried out to next step computing to 2#DSP.
This schematic diagram detail display instrument work latter half be the principle of data analysis, this partial data analysis comprises 2#DSP, DSP peripheral expansion module, data read-write module, human-computer interaction module, peripheral interface module and removable memory.The total principle of work of this part is described as: 1#DSP is delivered to 2#DSP by digital signal by SPI high-speed serial communication interface, 2#DSP carries out digital filtering and fast Fourier (FFT) Treatment Analysis to 12 position digital signals, can realize three-phase voltage, current signal real-time follow-up, in real time calculating voltage effective value, current effective value, electric current and voltage tri-phase unbalance factor, active power, reactive power, applied power, frequency, power factor and analysis stable state harmonic wave.These basic electric parameters parameters show by the LCD12864 in human-computer interaction module on the one hand, are stored in and extend out in RAM on the other hand, and read and write in outside removable memory by CH376 file management chip.Shown in data analysis schematic diagram each modular structure and function thereof be described in detail as follows.
Described 2#DSP also comprises the peripheral interface circuit being connected with DSP, 2#DSP is as core data process chip, be connected between 1#DSP and human-computer interaction module, data read-write module, DSP peripheral expansion module, be respectively these three modules chip selection signal and FFT digital processing signal are provided, control data read-write module and read and write data in SD card and USB flash disk; Control the level shifting circuit in human-computer interaction module, the data that DSP is processed show by Liquid Crystal Module; Realize the function of DSP peripheral expansion module.The TMS320F2812 chip that 2#DSP adopts TI company to produce, it is a 32 fixed-point DSP chip for the high-performance controlled, multi-functional, high performance-price ratio, the highest can work under 150MHz.This chip has a large amount of controlled GPIO mouths, and convenient control is connected with peripheral circuit; Chip integration is very high, fast operation, has remarkable digital signal processing capability, is the most frequently used chip platform in Digital Signals field.2#DSP utilizes FFT fast Fourier algorithm to calculate the frequency of first-harmonic and each harmonic, voltage, amplitude and phase place, and each phase active power, reactive power, applied power, power factor and each harmonic aberration rate, resultant distortion rate etc. parameters of electric power.
Fast Fourier Transform (FFT) (FFT) is a kind of variation that time-domain signal is changed into frequency-region signal, is in digital signal processing, to signal analysis, to be a kind of method of frequent employing.Utilize Fast Fourier Transform (FFT) (FFT) method can the first-harmonic of electric current and voltage of sampling is separated with each harmonic, and calculate respectively required fundametal compoment and each harmonic component, and then calculate the electric power basic parameter such as active power, reactive power, applied power, fundamental power factor, three-phase imbalance of electric current and voltage.
Described DSP peripheral expansion module comprises: RS232 telecommunication circuit, peripheral clock circuit, extend out RAM circuit and extend out FLASH circuit;
Described RS232 telecommunication circuit, extend out RAM circuit and extend out FLASH circuit and described dsp chip interconnects, described RS232 telecommunication circuit adopts UART chip TL16C550 and SP3232 chip, it adopts RS232, RS485 wire communication mode and GPRS wireless communication mode, its major function be for providing reliably between Digital Circuit-terminating Equipment (DCE) and data terminal equipment (DTE), interface service flexibly.By RS232 or RS485 interface, communicate by letter with monitoring equipment, the function of transmission measurement data and Real-Time Monitoring, on-line monitoring is provided.Meanwhile, this data communication function also can be realized with bluetooth module, makes the data can wireless transmission, improves detection efficiency, saves detection time; Described peripheral clock circuit adopts the serial realtime clock chip DS1305 of Dallas company, for energy-saving diagnosis instrument provides outside precisely clock, facilitates instrument record Monitoring Data.DS1305 is serial, with the real-time clock of alarm clock, be also full binary coded decimal (BCD) time-of-day clock, can be by simple serial interface access.This clock/calendar can provide second, minute, time, day, the moon, year information; The described RAM circuit that extends out adopts IS61LV25616AL chip, and is connected to CH376 chip, SD card interface and USB interface.The signal input of this chip A0-A17 Gong18 road, I/O0-I/O15 is totally 16 signal outputs, Qi18 road input signal is from 2#DSP chip, and by its sheet choosing of 2#DSP chip controls, read-write, for expanding the data-carrier store of described 2#DSP chip, by CH376 chip by the reading and writing data of depositing to SD card or USB(as USB flash disk) in, realize mass data storage function, thereby provide powerful essence data files for its supporting diagnosis of energy saving and energy auditing system software; The described FLASH circuit that extends out adopts SST39VF800 chip, the signal input of this chip A0-A18 Gong19 road, DQ0-DQ15 is totally 16 signal outputs, the signal input of Qi19 road is from 2#DSP chip, and by its sheet choosing of 2#DSP chip controls, read-write, for expanding the program storage of described 2#DSP chip, realize the large capacity storage of 2#DSP calculation procedure and sampling routine.
Extending out FLASH is a kind of involatile internal memory, under the condition that there is no electric current supply, also can keep muchly data, and storage characteristics is equivalent to hard disk.Extend out FLASH and utilize SST39VF800 chip to realize expanded function, be mainly used in storing DSP application program.Extending out RAM utilizes IS61LV25616AL chip to realize expanded function, can intactly deposit the data of dsp chip processing and monitoring record, for host computer software section, read, make the data transmission between 2#DSP and described DSP peripheral expansion module, data read-write module, human-computer interaction module more simple and efficient.
Described data read-write module comprises: reading and writing data circuit, SD card interface circuit and USB flash disk interface circuit.Wherein, reading and writing data circuit is connected on described 2#DSP kernel processor chip, and SD card interface circuit and USB flash disk interface circuit are connected to reading and writing data circuit;
Described reading and writing data circuit adopts CH376 file management chip to be connected with described 2#DSP chip TMS 320 F 2812, realizes sheet choosing, the read-write of CH376 chip are controlled, to controlling read-write from the data of 2#DSP chip in outside removable memory; CH376 file management chip is connected with described USB flash disk interface circuit, its D-and the read-write of D+ port controlling USB flash disk; CH376 file management chip is connected with described SD card interface circuit, its SD_CS, SD_D0, SD_CK, the read-write of SD_DI port controlling SD card; Described SD card interface circuit is used for accessing SD card, to store monitoring record data and DSP computing data; Described USB flash disk interface circuit is used for accessing USB flash disk, and function is the same with SD card.
Reading and writing data circuit adopts CH376 file management chip, and the input of this chip D0-D7 Gong Ba road signal, from 2#DSP.This chip slapper choosing and read-write are controlled by 2#DSP, guarantee to read and write data in real time in removable memory, facilitate the use of backstage upper computer analyzing software to data, have saved detection time, have improved efficiency.
Described human-computer interaction module comprises: level shifting circuit, display module, keyboard input circuit.Wherein, level shifting circuit input interface is connected to described 1#DSP and 2#DSP chip, and its output interface is connected to Liquid Crystal Module; Keyboard input circuit is connected to level shifting circuit input interface, controls display module; Display module is connected to level shifting circuit.The digital signal that will be shown by level shifting circuit output, and show by Liquid Crystal Module, these digital signals that show comprise various to the useful electric data of analysis user power consumption situation, comprise three-phase voltage, three-phase current, three phase power, power factor etc.;
Described level shifting circuit adopts 74ALVC16245 chip, and the digital signal from A/D sampling A/D chip and dsp chip is latched and buffered, guarantees that Liquid Crystal Module can show current user's to be measured electric parameters parameter situation in real time; Described display module adopts LCD12864 display module, this modular belt Chinese word library, and display resolution is high, can form complete Chinese man-machine interaction graphical interfaces.It shows the electric parameters parameter situation of current subscriber's line to be measured, facilitates tester to observe operation; Described keyboard input circuit adopts button trigger circuit, utilize the I/O mouth signal of DSP data analysis chip to control the operation of display screen, this keyboard input circuit is connected to the input port of level shifting circuit, for controlling manually liquid crystal display, preserves simultaneously and arrange detecting instrument parameter.
Described peripheral interface module comprises: DC+5V interface, SD card interface, USB interface and RS232 interface.Be mainly the utility model various interface function is provided.Wherein, SD card interface is used for inserting SD card, storage data; USB interface is inserted the removable memories such as USB flash disk; RS232 Interface realization data communication function; DC+5V interface provides ﹢ 5V direct supply for the utility model, guarantees that instrument normally works.
Described removable memory comprises: large capacity SD card or USB flash disk.The Monitoring Data amount that the utility model can at least be stored one week, these Real-time Monitoring Datas provide powerful basic data support for host computer energy conservation potential online automatic detection and power quality harnessed synthetically simulation software.
Should individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument based on double T MS320F2812 make comprehensive diagnos and assessment to special line energy-saving potential and the quality of power supply, for user maximizes production energy-saving, provide decision information.The two DSP frameworks of the utility model based on up-to-date, high-precision A/D Sampling techniques, large capacity storage technology and friendly human-computer interaction technology, and adopt the measurement means of science, guarantee the automatic monitoring record of the accurate real-time online of user's energy data to be measured; This utility model has telecommunications functions simultaneously, can serve more high-rise business information analysis and management system.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (6)
1. individual line subscriber energy-saving potential and a quality of power supply intelligent diagnosing instrument, is characterized in that, comprises removable memory and the data acquisition unit being connected successively, data analysis unit, DSP peripheral functional modules; Removable memory is connected to described data analysis unit; Data acquisition unit is connected to individual line subscriber circuit to be measured;
Described data acquisition unit comprises sensing module, signal condition module and A/D sampling module;
Described data analysis unit comprises 1#DSP data analysis chip and 2#DSP data analysis chip, and wherein, 1#DSP data analysis chip is connected to A/D sampling module; 2#DSP data analysis chip is connected to 1#DSP data analysis chip by SPI serial communication interface;
Described DSP peripheral functional modules comprises peripheral interface module, DSP peripheral expansion module, data read-write module and human-computer interaction module, and DSP peripheral functional modules is connected to the 2#DSP data analysis chip of described data analysis unit;
Described removable memory is connected to the peripheral interface module in DSP peripheral functional modules.
2. a kind of individual line subscriber energy-saving potential according to claim 1 and quality of power supply intelligent diagnosing instrument, is characterized in that described data acquisition unit comprises sensing module, signal condition module and A/D sampling module;
Wherein, sensing module adopts Hall element CLSM-10mA, is used for high voltage transitions to become low voltage;
Signal condition module adopts frequency overlapped-resistable filter, OP4227 operational amplifier, comparer, phase-locked loop circuit, sampling holder and A/V change-over circuit, and this module is carried out frequency multiplication 256 times to sample frequency;
A/D sampling module adopts MAX1324 chip, and 14,8 passages, synchronized sampling ADC converter, has excellent dynamic perfromance and DC characteristic.
3. a kind of individual line subscriber energy-saving potential according to claim 1 and quality of power supply intelligent diagnosing instrument, is characterized in that 1#DSP data analysis chip and the 2#DSP data analysis chip in described data analysis unit adopts TMS320F2812 chip;
Wherein, between 1#DSP data analysis chip and 2#DSP data analysis chip, by SPI serial communication interface, connect;
1#DSP data analysis chip is connected to A/D sampling module, and 2#DSP data analysis chip is connected to described DSP peripheral functional modules.
4. a kind of individual line subscriber energy-saving potential according to claim 1 and quality of power supply intelligent diagnosing instrument, is characterized in that described DSP peripheral functional modules comprises peripheral interface module, DSP peripheral expansion module, data read-write module and human-computer interaction module;
Wherein, peripheral interface module mainly adopts RS-232 interface, DC+5V interface, SD card interface and USB interface;
DSP peripheral expansion module mainly comprises RS232 telecommunication circuit, peripheral clock circuit, extend out RAM circuit and extend out FLASH circuit, peripheral RS232 circuit adopts UART chip TL16C550 and SP3232 chip, peripheral clock circuit adopts the serial clock chip DS1305 of Dallas company, extend out RAM circuit and adopt IS61LV25616AL chip, extend out FLASH circuit and adopt SST39VF800 chip;
Data read-write module mainly comprises reading and writing data circuit, SD card interface circuit and USB flash disk interface circuit, and reading and writing data circuit adopts CH376 file management chip, is connected with described 2#DSP;
Human-computer interaction module mainly comprises level shifting circuit, display module and keyboard input circuit, and level shifting circuit adopts 74ALVC16245 chip, and display module adopts LCD12864 liquid crystal.
5. a kind of individual line subscriber energy-saving potential according to claim 1 and quality of power supply intelligent diagnosing instrument, it is characterized in that utilizing IS61LV25616AL chip and SST39VF800 chip to expand respectively RAM and the FLASH of described 1# and 2#DSP, make DSP can carry out large capacity program, storage Large Volume Data.
6. a kind of individual line subscriber energy-saving potential according to claim 1 and quality of power supply intelligent diagnosing instrument, it is characterized in that removable memory adopts large capacity SD card or USB flash disk, utilize file management control chip CH376 read and write the monitoring record data volume at least one week and be stored in SD card or USB flash disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211779.7U CN203965533U (en) | 2014-04-28 | 2014-04-28 | A kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211779.7U CN203965533U (en) | 2014-04-28 | 2014-04-28 | A kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203965533U true CN203965533U (en) | 2014-11-26 |
Family
ID=51926097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420211779.7U Expired - Lifetime CN203965533U (en) | 2014-04-28 | 2014-04-28 | A kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203965533U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021911A (en) * | 2014-04-28 | 2015-11-04 | 苏州华天国科电力科技有限公司 | Intelligent energy-saving potential and electric energy quality diagnostic device for individual line user |
| CN107239874A (en) * | 2017-04-26 | 2017-10-10 | 广西电网有限责任公司电力科学研究院 | A kind of quality of power supply and energy-saving analysis system towards track traffic |
| CN109254919A (en) * | 2018-09-03 | 2019-01-22 | 吉林大学 | A kind of embedded software diagnostic system and method |
-
2014
- 2014-04-28 CN CN201420211779.7U patent/CN203965533U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021911A (en) * | 2014-04-28 | 2015-11-04 | 苏州华天国科电力科技有限公司 | Intelligent energy-saving potential and electric energy quality diagnostic device for individual line user |
| CN107239874A (en) * | 2017-04-26 | 2017-10-10 | 广西电网有限责任公司电力科学研究院 | A kind of quality of power supply and energy-saving analysis system towards track traffic |
| CN109254919A (en) * | 2018-09-03 | 2019-01-22 | 吉林大学 | A kind of embedded software diagnostic system and method |
| CN109254919B (en) * | 2018-09-03 | 2022-03-29 | 吉林大学 | Embedded software diagnosis system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201327515Y (en) | Distributed electrical energy quality online monitoring instrument based on dual-CPU | |
| CN102435847B (en) | High-precision electrical parameter analyzer | |
| CN201035098Y (en) | Power consumer harmonic monitoring statistical device | |
| CN202870226U (en) | Electric energy quality analyzer | |
| CN101881790A (en) | Intelligent electric power parameter tester | |
| CN101566845A (en) | Multi-channel synchronous vibration data collecting system | |
| CN103063936B (en) | A kind of LV-PLC channel noise measuring system for scene and method thereof | |
| CN103364629B (en) | A kind of electronic device energy consumption measuring method and system | |
| CN203965533U (en) | A kind of individual line subscriber energy-saving potential and quality of power supply intelligent diagnosing instrument | |
| CN105676041A (en) | Double CPU electric energy quality monitoring device based on DSP and ARM | |
| CN203811718U (en) | Intelligent diagnostic instrument of energy saving of special-line user | |
| CN103487701A (en) | Intelligent system for on-line automatic detection of electricity-saving potential and rapid energy audit | |
| CN104297583A (en) | DSP based power quality testing system | |
| CN206311666U (en) | A kind of energy-conservation detector | |
| CN207198217U (en) | A kind of multifunctional virtual oscillograph based on expansible platform | |
| CN105021911A (en) | Intelligent energy-saving potential and electric energy quality diagnostic device for individual line user | |
| CN205608103U (en) | Portable electric energy quality monitoring appearance of full touch screen | |
| CN206292324U (en) | A kind of frequency-characteristic measuring-testing instrument | |
| CN203587687U (en) | Three-phase multifunctional electric energy meter based on high-grade dual-AVR single-chip microcomputer | |
| CN102608423B (en) | Detection method of harmonic energy | |
| CN202486308U (en) | Harmonic electric quantity measuring system | |
| CN207718222U (en) | A kind of performance comprehensive test device of Distributed Control System | |
| CN202421332U (en) | High precision electric parameter analyzer | |
| CN202918317U (en) | Data acquisition terminal on-site communication analyzer | |
| CN105021910A (en) | Energy-saving intelligent diagnostic instrument for special-line user |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |