CN103852670A - Transient state electricity energy quality information acquisition module with high sampling rate - Google Patents
Transient state electricity energy quality information acquisition module with high sampling rate Download PDFInfo
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Abstract
The invention discloses a transient state electricity energy quality information acquisition module with high sampling rate. The transient state electricity energy quality information acquisition module with high sampling rate comprises an input interface, a conditioning circuit (a current clamp is adopted for inputting information for a non-conditioning circuit), a protective circuit, an acquisition and control module and an output interface which are connected step by step; the input interface comprises a signal input module provided with eight acquisition channels; the conditioning circuit comprises a mutual inductor module; the protective circuit comprises an EMC (electro magnetic compatibility) anti-interference module and a withstand voltage protective module; the acquisition and control module is provided with an FPGA (field programmable gate array) module as the acquisition control module of a main control unit, and is connected between an ADC (analog to digital converter) module and the output interface, so that the sampling frequency is 102.4kHz maximally; the time precision error of synchronous acquisition of each acquisition channel is 1 microsecond maximally. The information collecting module provided by the invention is a front end collecting module of a transient state electricity energy quality monitoring/acquiring device, has a simple interface, is convenient to integrate, is high in sampling rate, is good in data synchronization, can accurately extract the transient state electricity energy quality information, and can be applied to transient state electricity energy quality monitoring devices.
Description
Technical field
The present invention relates to information acquisition, particularly relate to a kind of transient electric-energy quality information acquisition module of high sampling rate.
Background technology
Existing electric energy quality monitoring analyzing device is subject to the restriction of acquisition hardware and data processing, sampling rate is not high, can only realize the monitoring of stable-state index of power quality and Power Quality Transient index, wherein stable-state index of power quality comprises voltage deviation, frequency departure, voltage/current harmonic wave, voltage/current three-phase imbalance, voltage fluctuation and flickering, and Power Quality Transient index comprises voltage swell, voltage dip and short time voltage interruption.If sampling rate is lower, cannot catch the transient electric-energy quality information occurring in Operation of Electric Systems, these transient electric-energy quality informations are because operation is improper, are struck by lightning, and break down and produce.Transient electric-energy quality event has contingency and rapidity, require monitoring device to possess large storage capacity, high-speed sampling, high signal recognition and processing power, transient electric-energy quality monitoring/acquisition component in existing quality of power supply device front-end collection module, be difficult to meet standard GB/T/T18481-2001 " quality of power supply temporary overvoltage and transient overvoltage " about the monitoring requirement to transient electric-energy quality.
Summary of the invention
A technical matters to be solved by this invention is the defect that makes up above-mentioned prior art, and a kind of transient electric-energy quality information acquisition module of high sampling rate is provided.
Another technical matters to be solved by this invention is the defect that makes up above-mentioned prior art, and a kind of transient electric-energy quality information acquisition module for current clamp input message of high sampling rate is provided.
The transient electric-energy quality information acquisition module technical matters of high sampling rate of the present invention is solved by the following technical programs.
The transient electric-energy quality information acquisition module of this high sampling rate, comprise the input interface connecting step by step, modulate circuit, holding circuit, acquisition control module and output interface, described acquisition control module comprises analog digital conversion (the Analog Digital Converter that input end is connected with described holding circuit and described output interface respectively, initialism is ADC) module, and input end is connected with described ADC module, CPLD (the ComplexProgrammable Logic Device that output terminal is connected with output interface, initialism is CPLD), described ADC module comprises A/D converter and peripheral circuit thereof, for controlling the sampling rate of each road acquisition channel, reliablely and stablely image data and translation data, described CPLD is for decoding and logic control output, receive synchronizing signal and supply with ADC module, ADC module is realized and gathers sequential control, synchronous acquisition is from the multiplexer channel data of input interface.
The feature of the transient electric-energy quality information acquisition module of this high sampling rate is:
Described input interface comprises the signal input module that is provided with eight road acquisition channels, described signal input module comprises three-phase voltage and three-phase current input interface, 1 road N phase voltage, 1 road N phase current input interface, the function of described input interface is to gather analog quantity voltage signal and the current signal that transient electric-energy quality information is contained on eight tunnels, the analog quantity voltage signal that transient electric-energy quality information is contained on described eight tunnels and current signal Shi San road three-phase simulation voltage signal, three road three-phase simulation current signals, N phase analog voltage signal He Yi road, a road N phase analog current signal.
Described modulate circuit comprises mutual inductor module, described mutual inductor module comprises voltage transformer (VT), current transformer, and its function is input interface to be gathered to the analog quantity voltage signal and the current signal that contain transient electric-energy quality information in Ba road be converted to the receptible eight road 3.53V voltage signals of analog signals tablet.
Described holding circuit comprises by electric capacity, magnetic bead, transition twin zener dioder (Transient Voltage Suppressor; initialism is TVS) electromagnetic compatibility (the Electromagnetic Compatibility of pipe composition; initialism is EMC) immunity module and withstand voltage protection module, the function of described holding circuit is that the analog quantity voltage signal that contains transient electric-energy quality information and the current signal to inputting described ADC module provides the anti-interference and withstand voltage protection of EMC.
Described acquisition control module is to be provided with field programmable gate array (Field-Programmable Gate Array, initialism is FPGA) module is as the acquisition control module of main control unit, described FPGA module is connected between described ADC module and described output interface, carry out data acquisition buffer memory for jointly controlling described ADC module with described CPLD, make sample frequency be up to 102.4kHz, the IGIB-B coded signal importing into according to outside to transient electric-energy quality sampled data carry out high precision to time process, reduce time error accumulation long-term in board, the time precision error of the synchronous acquisition of Shi Ge road acquisition channel is 1 μ s to the maximum.After described ADC module is once sampled and is finished, described FPGA reads the data of described ADC module by read operation, busy (BUSY) signal producing according to ADC module and the selection signal Input Address line (SAI) that gathers address produce sheet choosing (the Chip Select that controls ADC, initialism is CS) signal, (SWR) signal and OPADD line (SAO) signal driver light emitting diode (Light Emitting Diode are write in reception, initialism is LED) output, as the indication of corresponding test or duty.
The transient electric-energy quality information acquisition module technical matters of high sampling rate of the present invention is solved by following further technical scheme.
Described acquisition control module is also provided with impact damper (BUFFER) module, described BUFFER module is connected between described ADC module and described output interface as door switch, in the time that outside will gather analog data, controlling described BUFFER enables effectively, described BUFFER is for strengthening the driving force to analog signals, prevent analog signals decay, and realize the impedance matching of analog signals tablet and analog signals filtering, guarantee the precision of transient electric-energy quality image data.
Described output interface is the Europlug of 96 loopers, the output terminal of described output interface respectively with described BUFFER, described FPGA module and described CPLD connect, receive respectively described BUFFER, described FPGA module and described CPLD signal after treatment, described output interface is also connected with data bus and described ADC module respectively, by the described BUFFER receiving, described FPGA module, described CPLD signal after treatment exports other module of transient electric-energy quality monitoring device to, and feedback synchronization signal is to described ADC module, jointly described ADC module is realized and gathers sequential control with the logic control output of described CPLD, synchronous acquisition is from the multiplexer channel data of described input interface.
Described input interface is Phoenix connector, is provided with the output that 4 tie points connect four road current clamps.
The transient electric-energy quality information acquisition module technical matters of high sampling rate of the present invention by below further technical scheme solved.
Described voltage transformer (VT) is that model is the voltage transformer (VT) of TV5202-120V/3.53V.
Described current transformer is that model is the current transformer of TV5202-10A/3.53V.
Described A/D converter is that to adopt model be AD7606 16, the A/D converter of eight passage acquisition chips, need to configure the reference voltage source outside sheet.
Described CPLD is that model is the CPLD of EPM3202A.
Described FPGA module is that model is the FPGA module of EP3C16F256I7.
Described BUFFER is that model is the BUFFER of SN74LVC16245ADGGR.
The transient electric-energy quality information acquisition module technical matters for current clamp input message of high sampling rate of the present invention is solved by the following technical programs.
The transient electric-energy quality information acquisition module of the current clamp input message of this high sampling rate, comprise the input interface connecting step by step, holding circuit, acquisition control module and output interface, described acquisition control module comprises the ADC module that input end is connected with described holding circuit and described output interface respectively, and input end is connected with described ADC module, the CPLD that output terminal is connected with output interface, described ADC module comprises A/D converter and peripheral circuit thereof, for controlling the sampling rate of each road acquisition channel, reliablely and stablely image data and translation data, described CPLD is for decoding and logic control output, receive synchronizing signal and supply with ADC module, ADC module is realized and gathers sequential control, synchronous acquisition is from the multiplexer channel data of input interface.
The feature of the transient electric-energy quality information acquisition module of the current clamp input message of this high sampling rate is:
Described input interface comprises the signal input module that is provided with eight road acquisition channels, described signal input module comprises current clamp input interface, three-phase voltage and three-phase current input interface, 1 road N phase voltage, 1 road N phase current input interface, the function of described input interface is to gather analog quantity voltage signal and the current signal that transient electric-energy quality information is contained on eight tunnels, the analog quantity voltage signal that transient electric-energy quality information is contained on described eight tunnels and current signal Shi San road three-phase simulation voltage signal, three road three-phase simulation current signals, one N phase analog voltage signal He Yi road, road N phase analog current signal.
Described holding circuit comprises by electric capacity, magnetic bead, TVS manages the EMC immunity module and the withstand voltage protection module that form, and the function of described holding circuit is that the analog quantity voltage signal that contains transient electric-energy quality information and the current signal to inputting described ADC module provides the anti-interference and withstand voltage protection of EMC.
Described acquisition control module is to be provided with the acquisition control module of FPGA module as main control unit, described FPGA module is connected between described ADC module and described output interface, carry out data acquisition buffer memory for jointly controlling described ADC module with described CPLD, make sample frequency be up to 102.4kHz, the IGIB-B coded signal importing into according to outside to transient electric-energy quality sampled data carry out high precision to time process, reduce time error accumulation long-term in board, the time precision error of the synchronous acquisition of Shi Ge road acquisition channel is 1 μ s to the maximum.After described ADC module is once sampled and is finished, described FPGA reads the data of described ADC module by read operation, busy (BUSY) signal producing according to ADC module and the selection signal Input Address line (SAI) that gathers address produce the CS signal of controlling ADC, (SWR) signal and OPADD line (SAO) signal driver LED output are write in reception, as the indication of corresponding test or duty.
The transient electric-energy quality information acquisition module technical matters for current clamp input message of high sampling rate of the present invention is solved by following further technical scheme.
Described acquisition control module is also provided with BUFFER module, described BUFFER module is connected between described ADC module and described output interface as door switch, in the time that outside will gather analog data, controlling described BUFFER enables effectively, described BUFFER is for strengthening the driving force to analog signals, prevent analog signals decay, and realize the impedance matching of analog signals tablet and analog signals filtering, guarantee the precision of transient electric-energy quality image data.
Described output interface is the Europlug of 96 loopers, the output terminal of described output interface respectively with described BUFFER, described FPGA module and described CPLD connect, receive respectively described BUFFER, described FPGA module and described CPLD signal after treatment, described output interface is also connected with data bus and described ADC module respectively, by the described BUFFER receiving, described FPGA module, described CPLD signal after treatment exports other module of transient electric-energy quality monitoring device to, and feedback synchronization signal is to described ADC module, jointly described ADC module is realized and gathers sequential control with the logic control output of described CPLD, synchronous acquisition is from the multiplexer channel data of described input interface.
Described input interface is Phoenix connector.
The transient electric-energy quality information acquisition module technical matters for current clamp input message of high sampling rate of the present invention by below further technical scheme solved.
Described A/D converter is that to adopt model be AD7606 16, the A/D converter of eight passage acquisition chips, need to configure the reference voltage source outside sheet.
Described CPLD is that model is the CPLD of EPM3202A.
Described FPGA module is that model is the FPGA module of EP3C16F256I7.
Described BUFFER is that model is the BUFFER of SN74LVC16245ADGGR.
The present invention's beneficial effect is compared with prior art:
Information acquisition module of the present invention is the front-end collection module of transient electric-energy quality monitoring/harvester, and interface is simple, integrated convenience, sampling rate is high, data synchronism is good, can accurately extract transient electric-energy quality information, can be used for transient electric-energy quality monitoring device.
Accompanying drawing explanation
Fig. 1 is the compositional block diagram of the specific embodiment of the invention one;
Fig. 2 is the compositional block diagram of the specific embodiment of the invention two;
Fig. 3 is the compositional block diagram of the acquisition control module in Fig. 1, Fig. 2.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention will be described.
Embodiment one
A kind of as Fig. 1, the transient electric-energy quality information acquisition module of the high sampling rate shown in 3, comprise the input interface connecting step by step, modulate circuit, holding circuit, acquisition control module and output interface, acquisition control module comprises the ADC module that input end is connected with holding circuit and output interface respectively, and input end is connected with ADC module, the model that output terminal is connected with output interface is the CPLD of EPM3202A, ADC module comprises that model is 16 of AD7606, A/D converter A/D converter and the peripheral circuit thereof of eight passage acquisition chips, comprise the reference voltage source outside configuration sheet, for controlling the sampling rate of each road acquisition channel, reliablely and stablely image data and translation data, CPLD is for decoding and logic control output, receive synchronizing signal and supply with ADC module, ADC module is realized and gathers sequential control, synchronous acquisition is from the multiplexer channel data of input interface.
Input interface comprises the signal input module that is provided with eight road acquisition channels, signal input module comprises three-phase voltage and three-phase current input interface, 1 road N phase voltage, 1 road N phase current input interface, the function of input interface is to gather analog quantity voltage signal and the current signal that transient electric-energy quality information is contained on eight tunnels, the analog quantity voltage signal that transient electric-energy quality information is contained on eight tunnels and current signal Shi San road three-phase simulation voltage signal, three road three-phase simulation current signals, N phase analog voltage signal He Yi road, a road N phase analog current signal.
Modulate circuit comprises mutual inductor module, mutual inductor module comprises that model is the voltage transformer (VT) of TV5202-120V/3.53V, the current transformer that model is TV5202-10A/3.53V, and its function is input interface to be gathered to the analog quantity voltage signal and the current signal that contain transient electric-energy quality information in Ba road be converted to the receptible eight road 3.53V voltage signals of analog signals tablet.
Holding circuit comprises by electric capacity, magnetic bead, TVS manages the EMC immunity module and the withstand voltage protection module that form, and the function of holding circuit is to provide the anti-interference and withstand voltage protection of EMC to the analog quantity voltage signal that contains transient electric-energy quality information and the current signal of input ADC module.
Acquisition control module is that to be provided with model be that the FPGA module of EP3C16F256I7 is as the acquisition control module of main control unit, FPGA module is connected between ADC module and output interface, carry out data acquisition buffer memory for jointly controlling ADC module with CPLD, make sample frequency be up to 102.4kHz, the IGIB-B coded signal importing into according to outside to transient electric-energy quality sampled data carry out high precision to time process, reduce time error accumulation long-term in board, the time precision error of the synchronous acquisition of Shi Ge road acquisition channel is 1 μ s to the maximum.After ADC module is once sampled and is finished, FPGA reads the data of ADC module by read operation, busy (BUSY) signal producing according to ADC module and the selection signal Input Address line (SAI) that gathers address produce sheet choosing (the Chip Select that controls ADC, initialism is CS) signal, (SWR) signal and OPADD line (SAO) signal driver light emitting diode (Light Emitting Diode are write in reception, initialism is LED) output, as the indication of corresponding test or duty.
Acquisition control module is also provided with the BUFFER module that model is SN74LVC16245ADGGR, BUFFER module is connected between ADC module and output interface as door switch, in the time that outside will gather analog data, controlling BUFFER enables effectively, BUFFER is for strengthening the driving force to analog signals, prevent analog signals decay, and realize the impedance matching of analog signals tablet and analog signals filtering, guarantee the precision of transient electric-energy quality image data.
Output interface is the Europlug of 96 loopers, the output terminal of output interface respectively with BUFFER, FPGA module and CPLD connect, receive respectively BUFFER, FPGA module and CPLD signal after treatment, output interface is also connected with data bus and ADC module respectively, by the BUFFER receiving, FPGA module, CPLD signal after treatment exports other module of transient electric-energy quality monitoring device to, and feedback synchronization signal is to ADC module, jointly ADC module is realized and gathers sequential control with the logic control output of CPLD, synchronous acquisition is from the multiplexer channel data of input interface.
Input interface is Phoenix connector.
Embodiment two
The transient electric-energy quality information acquisition module for current clamp input message of high sampling rate as shown in Figure 2,3, its built-up circuit is basic identical with embodiment one, and difference is: for current clamp input message, do not need to arrange modulate circuit.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make without departing from the inventive concept of the premise some alternative or obvious modification that are equal to; and performance or purposes identical, all should be considered as belonging to the present invention by the definite scope of patent protection of submitted to claims.
Claims (10)
1. the transient electric-energy quality information acquisition module of a high sampling rate, comprise the input interface connecting step by step, modulate circuit, holding circuit, acquisition control module and output interface, described acquisition control module comprises the analog digital conversion ADC module that input end is connected with described holding circuit and described output interface respectively, and input end is connected with described ADC module, the complex programmable logic device (CPLD) that output terminal is connected with output interface, described ADC module comprises A/D converter and peripheral circuit thereof, for controlling the sampling rate of each road acquisition channel, reliablely and stablely image data and translation data, described CPLD is for decoding and logic control output, receive synchronizing signal and supply with ADC module, ADC module is realized and gathers sequential control, synchronous acquisition is from the multiplexer channel data of input interface, it is characterized in that:
Described modulate circuit comprises mutual inductor module, described mutual inductor module comprises voltage transformer (VT), current transformer, and its function is input interface to be gathered to the analog quantity voltage signal and the current signal that contain transient electric-energy quality information in Ba road be converted to the receptible eight road 3.53V voltage signals of analog signals tablet;
Described holding circuit comprises by electric capacity, magnetic bead, transition twin zener dioder TVS manages the electromagnetic compatibility EMC immunity module and the withstand voltage protection module that form, and the function of described holding circuit is that the analog quantity voltage signal that contains transient electric-energy quality information and the current signal to inputting described ADC module provides the anti-interference and withstand voltage protection of EMC;
Described acquisition control module is to be provided with the acquisition control module of on-site programmable gate array FPGA module as main control unit, described FPGA module is connected between described ADC module and described output interface, carry out data acquisition buffer memory for jointly controlling described ADC module with described CPLD, make sample frequency be up to 102.4kHz, the IGIB-B coded signal importing into according to outside to transient electric-energy quality sampled data carry out high precision to time process, reduce time error accumulation long-term in board, the time precision error of the synchronous acquisition of Shi Ge road acquisition channel is 1 μ s to the maximum, after described ADC module is once sampled and is finished, described FPGA reads the data of described ADC module by read operation, the sheet that the selection signal Input Address line of the busy signal producing according to ADC module and collection address produces control ADC selects CS signal, receive write signal and the output of OPADD line signal driver LED, as the indication of corresponding test or duty.
2. the transient electric-energy quality information acquisition module of high sampling rate as claimed in claim 1, is characterized in that:
Described acquisition control module is also provided with impact damper BUFFER module, described BUFFER module is connected between described ADC module and described output interface as door switch, in the time that outside will gather analog data, controlling described BUFFER enables effectively, described BUFFER is for strengthening the driving force to analog signals, prevent analog signals decay, and realize the impedance matching of analog signals tablet and analog signals filtering, guarantee the precision of transient electric-energy quality image data.
3. the transient electric-energy quality information acquisition module of high sampling rate as claimed in claim 1 or 2, is characterized in that:
Described output interface is the Europlug of 96 loopers, the output terminal of described output interface respectively with described BUFFER, described FPGA module and described CPLD connect, receive respectively described BUFFER, described FPGA module and described CPLD signal after treatment, described output interface is also connected with data bus and described ADC module respectively, by the described BUFFER receiving, described FPGA module, described CPLD signal after treatment exports other module of transient electric-energy quality monitoring device to, and feedback synchronization signal is to described ADC module, jointly described ADC module is realized and gathers sequential control with the logic control output of described CPLD, synchronous acquisition is from the multiplexer channel data of described input interface.
4. the transient electric-energy quality information acquisition module of high sampling rate as claimed in claim 3, is characterized in that:
Described input interface is Phoenix connector, is provided with the output that 4 tie points connect four road current clamps.
5. the transient electric-energy quality information acquisition module of high sampling rate as claimed in claim 4, is characterized in that:
Described voltage transformer (VT) is that model is the voltage transformer (VT) of TV5202-120V/3.53V;
Described current transformer is that model is the current transformer of TV5202-10A/3.53V;
Described A/D converter is that to adopt model be AD7606 16, the A/D converter of eight passage acquisition chips, need to configure the reference voltage source outside sheet;
Described CPLD is that model is the CPLD of EPM3202A;
Described FPGA module is that model is the FPGA module of EP3C16F256I7;
Described BUFFER is that model is the BUFFER of SN74LVC16245ADGGR.
6. the transient electric-energy quality information acquisition module for current clamp input message of a high sampling rate, comprise the input interface connecting step by step, holding circuit, acquisition control module and output interface, described acquisition control module comprises the ADC module that input end is connected with described holding circuit and described output interface respectively, and input end is connected with described ADC module, the CPLD that output terminal is connected with output interface, described ADC module comprises A/D converter and peripheral circuit thereof, for controlling the sampling rate of each road acquisition channel, reliablely and stablely image data and translation data, described CPLD is for decoding and logic control output, receive synchronizing signal and supply with ADC module, ADC module is realized and gathers sequential control, synchronous acquisition is from the multiplexer channel data of input interface, it is characterized in that:
Described input interface comprises the signal input module that is provided with eight road acquisition channels, described signal input module comprises current clamp input interface, three-phase voltage and three-phase current input interface, 1 road N phase voltage, 1 road N phase current input interface, the function of described input interface is to gather analog quantity voltage signal and the current signal that transient electric-energy quality information is contained on eight tunnels, the analog quantity voltage signal that transient electric-energy quality information is contained on described eight tunnels and current signal Shi San road three-phase simulation voltage signal, three road three-phase simulation current signals, one N phase analog voltage signal He Yi road, road N phase analog current signal,
Described holding circuit comprises by electric capacity, magnetic bead, TVS manages the EMC immunity module and the withstand voltage protection module that form, and the function of described holding circuit is that the analog quantity voltage signal that contains transient electric-energy quality information and the current signal to inputting described ADC module provides the anti-interference and withstand voltage protection of EMC;
Described acquisition control module is to be provided with the acquisition control module of FPGA module as main control unit, described FPGA module is connected between described ADC module and described output interface, carry out data acquisition buffer memory for jointly controlling described ADC module with described CPLD, make sample frequency be up to 102.4kHz, the IGIB-B coded signal importing into according to outside to transient electric-energy quality sampled data carry out high precision to time process, reduce time error accumulation long-term in board, the time precision error of the synchronous acquisition of Shi Ge road acquisition channel is 1 μ s to the maximum, after described ADC module is once sampled and is finished, described FPGA reads the data of described ADC module by read operation, the selection signal Input Address line of the busy signal producing according to ADC module and collection address produces the CS signal of controlling ADC, receive write signal and OPADD line signal driver LED output, as the indication of corresponding test or duty.
7. the transient electric-energy quality information acquisition module for current clamp input message of high sampling rate as claimed in claim 6, is characterized in that:
Described acquisition control module is also provided with BUFFER module, described BUFFER module is connected between described ADC module and described output interface as door switch, in the time that outside will gather analog data, controlling described BUFFER enables effectively, described BUFFER is for strengthening the driving force to analog signals, prevent analog signals decay, and realize the impedance matching of analog signals tablet and analog signals filtering, guarantee the precision of transient electric-energy quality image data.
8. the transient electric-energy quality information acquisition module for current clamp input message of the high sampling rate as described in claim 6 or 7, is characterized in that:
Described output interface is the Europlug of 96 loopers, the output terminal of described output interface respectively with described BUFFER, described FPGA module and described CPLD connect, receive respectively described BUFFER, described FPGA module and described CPLD signal after treatment, described output interface is also connected with data bus and described ADC module respectively, by the described BUFFER receiving, described FPGA module, described CPLD signal after treatment exports other module of transient electric-energy quality monitoring device to, and feedback synchronization signal is to described ADC module, jointly described ADC module is realized and gathers sequential control with the logic control output of described CPLD, synchronous acquisition is from the multiplexer channel data of described input interface.
9. the transient electric-energy quality information acquisition module for current clamp input message of high sampling rate as claimed in claim 8, is characterized in that:
Described input interface is Phoenix connector.
10. the transient electric-energy quality information acquisition module for current clamp input message of high sampling rate as claimed in claim 9, is characterized in that:
Described A/D converter is that to adopt model be AD7606 16, the A/D converter of eight passage acquisition chips, need to configure the reference voltage source outside sheet;
Described CPLD is that model is the CPLD of EPM3202A;
Described FPGA module is that model is the FPGA module of EP3C16F256I7;
Described BUFFER is that model is the BUFFER of SN74LVC16245ADGGR.
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