CN109085421A - A kind of integral integration module - Google Patents
A kind of integral integration module Download PDFInfo
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- CN109085421A CN109085421A CN201811144794.3A CN201811144794A CN109085421A CN 109085421 A CN109085421 A CN 109085421A CN 201811144794 A CN201811144794 A CN 201811144794A CN 109085421 A CN109085421 A CN 109085421A
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- integral
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
Abstract
A kind of integral integration module, comprising: regulated power supply, communication module is isolated in voltage front end isolation signals processing module, electric current Roots's coil signal processing module, signal acquisition module, processor, memory, communication signal isolation module, multichannel；The voltage front end isolation signals processing module and the electric current Roots coil signal processing module are connected with signal acquisition module respectively, the voltage signal and electric current Roots's coil signal obtained for acquiring the voltage front end isolation signals processing module and the electric current Roots coil signal processing module, signal sends processor to after the signal acquisition module acquisition process, the processor is to be processed and/or processed signal for storing for memory, communication module is transferred to through communication signal isolation module through processor integral operation treated signal, communication module exports data obtained.
Description
Technical field
The present invention relates to measurement tests, instrument and meter, technical field of integrated circuits, and in particular to a kind of comprehensive mould of integral
Block.
Background technique
Rogowski coil current transformer based on current measurement coil principle is a kind of annulus of nonmagnetic core, can be with
For measuring the electric current in annulus middle conductor；Due to it is good with the linearity, without spies such as saturation, measurement accuracy height
Property, gradually it is applied to the Super-Current Measurement of ore furnace secondary detection.The secondary electricity of Rogowski coil current transformer coil output
Pressure signal is the differential of primary current signal, therefore tested primary current signal must be restored by corresponding integral element.
Existing integral element, which has, realizes also there is the metering chip digital integration using ADE7858 using RC breadboardin integrating circuit
Device.
Traditional integral element mainly uses analog integrator circuit to realize, but resistance, the capacitor that analog integrator circuit uses
Device is not ideal component, amplifier direct current offset, the leakage of integrating capacitor and loss, amplifier and other analog devices when drift and
The factors such as temperature drift can all have an impact integral result, so that integral be caused deviation occur, reduce the accurate of current transformer
Degree.
Using the metering chip digital integrator of ADE7858, the limitation of metering chip there is, can only measure three-phase electricity
The angle of stream, voltage value and Current Voltage.It can not obtain angle, phase angle and the active power consumption of three-phase between electric current, nothing
Function power consumption；The products application can only measure phase voltage, phase current, active when the Super-Current Measurement system of ore furnace secondary side
Idle parameter can not measure electrode current after secondary corner connection.
Summary of the invention
In view of problems of the prior art, one of the objects of the present invention is to provide a kind of integral integration modules, adopt
It can be improved the measurement accuracy of measuring instrument with the integral integration module.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of integral integration module includes: voltage front end isolation signals processing module, electric current Roots's coil signal processing mould
Regulated power supply, communication module is isolated in block, signal acquisition module, processor, memory, communication signal isolation module, multichannel；It is described
Voltage front end isolation signals processing module and the electric current Roots coil signal processing module are connected with signal acquisition module respectively
It connects, the electricity obtained for acquiring the voltage front end isolation signals processing module and the electric current Roots coil signal processing module
Pressure signal and electric current Roots's coil signal, signal send processor, memory to after the signal acquisition module acquisition process
The processor is to be processed and/or processed signal for storing, through processor integral operation treated signal through communicating
Signal isolation module transfer exports data obtained to communication module, communication module.
As a preferred embodiment, the voltage front end isolation signals processing module is the processing of three-phase voltage front end isolation signals
Module, the electric current Roots coil signal processing module are three-phase current Roots coil signal processing module.
As a preferred embodiment, the signal acquisition module includes AD acquisition CS5451 chip.
As a preferred embodiment, the processor includes LPC2138FBD64 chip.
As a preferred embodiment, the communication signal isolation module includes ADUM1201 chip.
As a preferred embodiment, the communication module includes SP485EEN chip, has RS485 communication interface.
As a preferred embodiment, the integral integration module can be used in phase voltage, phase current, line voltage, line current, function
The measurement of rate, at least one parameter in electric energy multiple parameters.
As a preferred embodiment, the three-phase voltage front end isolation signals processing module is isolated using mutual inductor, and pressure resistance reaches
DC2500V。
As a preferred embodiment, the integral integration module temperature drift :≤50ppm/ DEG C.
As a preferred embodiment, the signal acquisition module uses 6 channel 4K synchronized samplings.
Compared with prior art, the present invention is at least had the advantages that
During Rogowski coil current transformer measures mineral hot furnace high current, Roche is realized using digital integration processing
In coil current transformer measurement to amplitude, waveform, angle regulating error, with the multiple spot error compensation side of digital integrator
Method improves the measurement accuracy of whole measuring device.
The shortcomings that metering chip digital integrator using ADE7858 can be overcome simultaneously, ore furnace secondary can be measured
The electrode current of side, electrode current can intuitively reflect rise fall of electrodes movement bring electric parameter variation, compared to mutually electricity
Stream more operation is referring to property.
Detailed description of the invention
Fig. 1 is the modular construction schematic diagram of the integral one of preferred embodiment of integration module of the present invention；
Fig. 2 be integral integration module of the present invention with external loading, with the circuit connection diagram of measuring circuit；
Fig. 3 a- Fig. 3 c is the circuit structure schematic diagram of three-phase voltage front end isolation signals processing module of the present invention；
Fig. 4 is the circuit structure schematic diagram of three-phase current Roots coil signal processing module of the present invention；
Fig. 5 is the circuit structure schematic diagram of signal acquisition module of the present invention；
Fig. 6 is the circuit structure schematic diagram of processor of the present invention；
Fig. 7 is the circuit structure schematic diagram of memory of the present invention；
Fig. 8 is the circuit structure schematic diagram of communication signal isolation module of the present invention；
Fig. 9 a and Fig. 9 b are the circuit structure schematic diagrams of multichannel isolation regulated power supply of the present invention；
Figure 10 is the circuit structure schematic diagram of communication module of the present invention.
Figure 11 is defined as follows table for integral each terminal of integration module shown in Fig. 2.
The present invention is described in more detail below.But following examples is only simple example of the invention, not generation
Table or limitation the scope of the present invention, protection scope of the present invention are subject to claims.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, of the invention is typical but non-limiting
Embodiment is as follows:
The product for three-phase electricity parameter measurement application of integral being a highly integrated of integration module of the present invention,
It can be used in accurately measuring three-phase alternating voltage, three-phase phase current (true rms measurement), three-phase line current using genuine standard (very
Effective value measurement), total active power, reactive power, power factor, each single-phase power, frequency, total active electrical degree, total idle electricity
In the measuring instrument instrument of at least one of the electric parameters such as degree.As a preferred embodiment, the integral integration module has RS-
485 communication interfaces.Measured data can be controlled by communication to the higher level needed for other, without other DA digital-to-analogue conversions
Journey is conducive to the raising of measurement accuracy.The module can be widely applied to electric power, communication, railway, traffic, environmental protection, petrochemical industry, steel
Etc. in industries, three in the electric current and electric quantity consumption situation and power distribution network and enterprise for monitoring the large scale equipment of three-phase motor driving
The metering and monitoring of phase electric energy.
Fig. 1 is the modular construction schematic diagram of the integral one of preferred embodiment of integration module of the present invention；Under
Face combines Fig. 1 to illustrate integral integration module of the present invention, it is to note that applicant is it is emphasized that Fig. 1
The structural schematic diagram is only the exemplary illustration to basic inventive concept of the invention, must not be not understood as of the invention unique
Correct embodiment.
A kind of integral integration module includes: three-phase voltage front end isolation signals processing module 10, three-phase current Roots's coil
Signal processing module 20, signal acquisition module 30, processor 40, memory 50, communication signal isolation module 60, multichannel isolation are steady
Voltage source 70, communication module 80, signal acquisition module 30 shown in Fig. 1 are that AD acquires CS5451 chip, and processor 40 is
CPU arithmetic processor, communication module 80 are RS-485 communication interface；The three-phase voltage front end isolation signals processing module 10
It is connected respectively with signal acquisition module 30 with the three-phase current Roots coil signal processing module 20, for acquiring described three
The three-phase electricity that phase voltage front end isolation signals processing module 10 and the three-phase current Roots coil signal processing module 20 obtain
Pressure signal and three-phase current Roots's coil signal, signal send processor to after 20 acquisition process of signal acquisition module
40, the processor 40 is to be processed and/or processed signal for storing for memory 50, handles through 40 integral operation of processor
Signal afterwards is transferred to communication module 80 through communication signal isolation module 40, and data obtained are sent to it by communication module 80
He needs to control or the host computer of signal output.
The integral integration module is for Rogowski coil current transformer signal sampling, AD processing, and the signal of AD processing is again
The direct current signal biasing in signal is eliminated through wave filter, integral operation is carried out by filtered signal again.
The output voltage e (t) of Rogowski coil current transformer is proportional to the change rate of tested electric current:
In above formula-M mutual inductance between mutual inductor coil and a bus, i is tested primary current, and t is the time.
It is integrated by the output voltage to Rogowski coil current transformer coil, restores tested current signal, it may be assumed that
The adjustment of integral operation parameter, come realize Rogowski coil current transformer measurement in amplitude, waveform, angle mistake
Difference is adjusted, and improves the measurement accuracy of whole measuring device, obtains the controllable controlling of production process effect of measuring device composition error.
Fig. 2 be integral integration module of the present invention with external loading, with the circuit connection diagram of measuring circuit；Its
In integral integration module each terminal shown in Fig. 2 be specifically defined such as Figure 11.
Fig. 3 a- Fig. 3 c is the circuit structure principle of three-phase voltage front end isolation signals processing module 10 of the present invention
Figure.
Wherein V11, V12, V21, V22, V31, V32 signal input part in Fig. 3 a correspond to the signal input part in Fig. 2
U11, U12, U21, U22, U31, U32, as shown in Figure 2 described signal input part U11, U12, U21, U22, U31, U32 respectively with
The transformer A of three-phase transformer, transformer B, transformer C current input terminal connected with output end.UAN signal in Fig. 3 a
End, UBN signal end, UCN signal end and AGND signal end respectively with UAN signal end, the UBN signal end, UCN in Fig. 3 b and Fig. 3 c
Signal end is connected with AGND signal end.It will be appreciated by those skilled in the art that circuit diagram more complicated for certain structures,
For convenience of description it is generally necessary to entire circuit diagram interconnected is presented by multiple individual circuits, in different electricity
In the figure of road with same tag signal end i.e. indicate both be it is interconnected, the applicant inventor emphasizes again that above-mentioned base
This principle is also applied for the circuit diagram mentioned hereinafter, and in some specific cases, the circuit diagram given by specification is
When can clearly express the connection relationship between circuit, to save specification length, specification word part descriptions thereof will
It is omitted or simplified.
Fig. 4 is the circuit structure schematic diagram of three-phase current Roots coil signal processing module of the present invention；Wherein Fig. 4
In I11, I12, I21, I22, I31, I32 signal input part correspond to Fig. 2 in signal input part I11, I12, I21, I22,
I31, I32, as shown in Figure 2 described signal input part I11, I12, I21, I22, I31, I32 respectively with measurement three-phase transformer
The both ends of Roots's coil of the electric current of transformer A, transformer B, transformer C are connected.
Fig. 5 is the circuit structure schematic diagram of signal acquisition module of the present invention, and the signal acquisition module includes
CS5451A chip, CS5451A are that Cirrus Logic company is highly integrated delta-sigma A/D turns that the energy measures industrial design
Parallel operation.CS5451A is integrated with 6 delta-sigma A/D converters, filter and one and microcontroller or DSP phase on a single die
The serial line interface of connection.The current divider and resistance divider of CS5451A and current transformer or measurable electric current or measurement change
Depressor is directly connected to.The product has been initialised completely set up with function simultaneously, and including a reference voltage.For
The connection type of CS5451A and other circuits on the one hand according to the use characteristic of CS5451A chip itself, still further aspect according to
Than more visible shown in Fig. 5, character property description is not being carried out here to save length.
Fig. 6 is the circuit structure schematic diagram of processor of the present invention；The processor includes: LPC2138FBD64
Chip, LPC2138FBD64 chip are by the embedding based on a support real-time simulation benefit of the Pu En Zhi semiconductor company (NXP) production
Enter 32 ARM7TDMI-SCPU of formula tracking, and the high speed flash storage with 512kB insertion.It is loaded by boot in piece
Program realizes in-system programming/in-service units (ISP/IAP).128 bit wide interfaces/accelerator can realize that up to 60MHz makees
Frequency enables 32 codes to run under maximum clock rate.Lesser encapsulation and very low power consumption keep LPC2138 especially suitable
For in the small applications such as access control and POS machine；CP is due in the built-in serial communication interface of wide scope and the piece of 32kB
SRAM, they are also admirably suitable for communication gate, protocol converter, software modem, speech recognition, low side imaging, answer for these
With the large-scale buffer area of offer and powerful processing function.Multiple serial line interfaces, including 2 16C550 industrial standard UART, 2
A High Speed I IC bus (400kbit/s), SPI and the SSP with buffer function and data length changeable.Multiple 32 fixed
When device, ADC, 1 10 channel DAC, PWM, 47 GPIO and up to 9 edges on 2 10 8 tunnels or level triggers it is outer
It interrupts and is make them particularly suitable for use in Industry Control Application system in portion.For the connection type one of LPC2138FBD64 and other circuits
According to the use characteristic of LPC2138FBD64 chip itself, still further aspect than more visible, is aspect according to Fig.6,
It saves length and is not carrying out character property description here.
Fig. 7 is the circuit structure schematic diagram of memory of the present invention；The memory includes FM24CL64 chip,
FM24CL64 is the 64K bit non-volatile memory using the manufacture of advanced ferroelectricity technique.Ferroelectric Random Access Memory (FRAM) tool
Have it is non-volatile, and can as RAM fast reading and writing.Data in FM24CL64 can save 45 years after a power failure.Phase
To EEPROM or other nonvolatile memories, FM24CL64 has structure simpler, and system reliability is more high many excellent
Point.
Unlike EEPROM series, FM24CL64 carries out write operation with bus speed, without delay.Data are dealt into
Specific element address is written directly to after FM24CL64, next bus operation can be immediately begun to, and be not necessarily to data polling.This
Outside, the read/writable number ratio EEPROM of FM24CL64 is several orders of magnitude higher.Simultaneously as it is not necessarily to internal booster circuit,
The write operation power consumption of FM24CL64 is very low.FM24CL64 characteristic: 64Kbit Nonvolatile ferroelectric memory, structural capacity are
8,192x 8, read/write number saves 45 years without limitation, power failure data, no-delay write operation, using advanced high reliability
Ferroelectricity manufacturing process, quick two-wire serial interface, bus frequency can directly replace EEPROM up to 1MHZ on hardware, support with
Preceding 100kHz&400kHz clock frequency；Low power consumption operation, operating voltage: 2.7V~3.6V, operating current (100kHz):
75uA, standby current 1uA；Industrial temperature: -40 DEG C~+85 DEG C, 8 foot SOIC encapsulation.
Fig. 8 is the circuit structure schematic diagram of communication signal isolation module of the present invention, the communication signal isolation mode
Block includes ADUM1201 chip, and ADUM1201 is the two-channel digital isolator using 1/1 channel direction, public based on ADI
DepartmentTechnology.These isolating devices combine high-speed cmos and single-chip transformer technology together, have and are better than light
The outstanding performance characteristic of the alternative devices such as coupler.ICoupler device does not have to LED and photodiode, because may be not present one
As difficult design relevant to photo-coupler.Simple iCoupler digital interface and stable performance feature, can eliminate optocoupler
The problems such as current transfer ratio that clutch usually has is uncertain, nonlinear transfer function and temperature and service life influence.This
A little iCoupler products do not need peripheral driver and other discrete devices.In addition, the situation suitable in signal data rate
Under, the power consumption of iCoupler device only has the 1/10 to 1/6 of photo-coupler.
Fig. 9 a and Fig. 9 b are the circuit structure schematic diagrams of multichannel isolation regulated power supply of the present invention；Wherein Fig. 9 a is steady
Volt circuit structure principle chart, Fig. 9 b are isolation circuit structure principle charts, and the voltage regulator circuit and isolation circuit are electricity field
Common basic circuit elements, Fig. 9 a and 9b are merely exemplary explanation, and those skilled in the art are without prejudice to the present application
In the case where purpose, other any circuit structures that multichannel isolation voltage stabilizing function may be implemented can be selected.
Figure 10 is the circuit structure schematic diagram of communication module of the present invention；The communication module includes SP485EEN
Chip is enhanced -485 transceiver of low-power consumption half-duplex RS, has RS485 communication interface, and measured data pass through communication
It is high to measure essence without other DA digital-to-analogue conversion processes to higher level's control needed for other.
The core devices of integration module of the present invention are 2, and it is logical to use 32 arm processor LPC2138 and 6
16, the road dedicated A/D chip CS5451A of ammeter, AD are sampled with the data rate synchronous of 4K, calculate electricity by ARM processor analysis meter
The parameters such as pressure, electric current, power, phase, electric energy.
The differential current signals of Roots's coil input are handled through the digital integrator of processor (CPU), and shifted and number
Word correction, realizes high-precision measurement.
The integral integration module is provided with RS485 communication interface, and measured data are by communication to needed for other
It is high to measure essence without other DA digital-to-analogue conversion processes for higher level's control.It is described integral integration module finished product include integrator hardware and
Software, wherein software is using the form of firmware for being embedded in processor.Meanwhile the end PC for providing verification error compensation parameter setting is soft
Part is communicated by RS485 communication interface with PC.
The production of the integral integration module uses the production of automation equipment, using surface mount elements and subsequent possible school
Test the interface that process automation production needs.
Measuring signal due to being matched in the integrator of Rogowski coil current transformer cannot function as final variable, also need
Follow-up measurement, new approaches and key of the invention: using integrated circuit, carries out high-speed ADC to input analog quantity and is converted to number
Amount, and integral operation is carried out using high speed numerical processor.Others do not have similar products to turn by DAC to result for another example after operation
It is changed to the digital circuit of analog quantity, but the data after integral are directly subjected to electrical parameter metering, in this way without intermediate DA, AD mistake
Journey, therefore the error of this process will not be generated.
This highly integrated digital integrator has more precision, can also more precisely adjust measurement error；For the big electricity of mineral hot furnace
Flow the integral synthesizer of the Rogowski coil current transformer of detection, the highly integrated device of collection integral and metering one.The integral
Integration module can directly measure the electrode current that can measure ore furnace secondary side, electrode impedance, electrode power factor, electrode function
Rate parameter.
The present invention is manufactured using modern large scale integrated circuit technology using stringent production technology, and inside is using advanced
Anti-Jamming Technique overcome the shortcoming of analogue integrator applied to the digital integrator of Rogowski coil current transformer,
Realize primary current signal accurate reproduction.Compared with analogue integrator, digital integrator not only stablize by performance, and phase characteristic is excellent
It is good, not by temperature drift and when the influence of direct current offset that is influenced, and analogue integrator can be overcome not to be avoided that of drift parameter.
The present invention is highly integrated digitlization integrator, further comprises function of measuring.Therefore more devices in series are solved
Bring overlay error is measured, product has more high integration.
The integral integration module can directly measure the electrode current that can measure ore furnace secondary side, electrode impedance, electricity
Pole power factor, electrode power parameter.
In some preferred embodiments, integral integration module of the present invention functional characteristics specific as follows:
Acquire ore heat furnace transformer secondary side three-phase electric parameter, including phase voltage, phase current, line voltage, line current, function
A electric parameter of rate, electric energy etc. more than 40, information are complete.
Using special measurement chip, true rms measurement mode is exchanged, measurement accuracy is high.
Communication protocol uses standard Modbus-RTU mode, and good compatibility facilitates programming.
RS-485 communication interface with esd protection circuit.
Wide operating voltage DC12~36V, and have and prevent that reversed defencive function, reversed power supply will not damage module.
Using technical grade chip, built-in house dog, and there is perfect lightning protection interference protection measure, guarantee reliability.
High-isolating, voltage and current input signal are isolated using Miniature precision mutual inductor, and pressure resistance reaches DC2500V.
It is the configurable real time data update cycle, convenient to be applied to various measurement requests.
Band LED indication working condition, is convenient for site installation test.
Technical parameter:
Three-phase alternating current input:
Input frequency: power frequency, 45~65Hz；
Voltage range: 260V, 450V etc. are optional；
Current range: 1KA, 10KA ... wait optional；It is determined by matching Ross coil mutual inductance device outside；
Signal processing: chip, 6 channel 4K synchronized samplings are measured using special high-accuracy AD；
The data update cycle: 0.1S~1.00S is configurable；
Overload capacity: 1.2 times of ranges are sustainable；5 times of electric current of moment (< 10 cycle), 3 times of ranges of voltage do not damage；
Input impedance: voltage channel > 1k Ω/V；Current channel integrator signal > 10k Ω/V；
Communication interface:
Interface type: RS-485 interface；
Communication protocol: MODBUS-RTU Standards Code；
Data format: can software setting, " n, 8,1 ", " e, 8,1 ", " o, 8,1 ", " n, 8,2 "；
Communication speed: settable 1200,2400,4800,9600,19200,38400Bps；
Measure output data:
A electric parameter of voltage, electric current, power, electric energy etc. more than 40；
Measurement accuracy:
Voltage, electric current: ± 0.2%FS；Electricity: ± 0.5%FS；1 grade of active electrical degree, 2 grades of idle electric degree；
Isolation:
DC power supply, RS-485 interface, voltage input, electric current input between it is mutually isolated；Pressure resistance 2500VDC is isolated；
Power supply:
DC+12~36V；
When DC+12~36V powers, crest voltage must not exceed+40V；Typical power consumption :≤0.5W；
Working environment:
Operating temperature: -20~+70 DEG C；Storage temperature: -40~+85 DEG C；
Relative humidity: 5~95%, no moisture condensation (at 40 DEG C)；
Height above sea level: 0~3000 meter；
Environment: without explosion, etchant gas and electro-conductive dust, without the significant place shaken, vibrate and impacted；
Temperature drift :≤50ppm/ DEG C；
The Applicant declares that the present invention is explained by the above embodiments detailed construction feature of the invention, but the present invention is simultaneously
It is not limited to above-mentioned detailed construction feature, that is, does not mean that the present invention must rely on above-mentioned detailed construction feature and could implement.Institute
Belong to those skilled in the art it will be clearly understood that any improvement in the present invention, to the equivalence replacement of component selected by the present invention
And increase, selection of concrete mode of accessory etc., all of which fall within the scope of protection and disclosure of the present invention.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of integral integration module, comprising: voltage front end isolation signals processing module, electric current Roots's coil signal handle mould
Regulated power supply, communication module is isolated in block, signal acquisition module, processor, memory, communication signal isolation module, multichannel；It is described
Voltage front end isolation signals processing module and the electric current Roots coil signal processing module are connected with signal acquisition module respectively
It connects, the electricity obtained for acquiring the voltage front end isolation signals processing module and the electric current Roots coil signal processing module
Pressure signal and electric current Roots's coil signal, signal send processor, memory to after the signal acquisition module acquisition process
The processor is to be processed and/or processed signal for storing, through processor integral operation treated signal through communicating
Signal isolation module transfer exports data obtained to communication module, communication module.
2. integral integration module as described in claim 1, the voltage front end isolation signals processing module is before three-phase voltage
Isolation signals processing module is held, the electric current Roots coil signal processing module is that three-phase current Roots coil signal handles mould
Block.
3. integral integration module as described in claim 1, the signal acquisition module includes AD acquisition CS5451 chip.
4. integral integration module as described in claim 1, the processor includes LPC2138FBD64 chip.
5. integral integration module as described in claim 1, the communication signal isolation module includes ADUM1201 chip.
6. integral integration module as described in claim 1, the communication module includes SP485EEN chip, logical with RS485
Communication interface.
7. integral integration module, the integral integration module can be used in phase voltage, phase current, line as described in claim 1
The measurement of voltage, line current, power, at least one parameter in electric energy multiple parameters.
8. integral integration module as described in claim 1, the three-phase voltage front end isolation signals processing module uses mutual inductance
Device isolation, pressure resistance reach DC2500V.
9. the integral integration module temperature drift: integral integration module as described in claim 1 is not more than 50ppm/ DEG C.
10. integral integration module as described in claim 1, the signal acquisition module uses 6 channel 4K synchronized samplings.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110477901A (en) * | 2019-08-27 | 2019-11-22 | 武汉吉星医疗科技有限公司 | A kind of physiological signals acquisition card |
| CN113110254A (en) * | 2021-05-20 | 2021-07-13 | 美钻石油钻采系统(上海)有限公司 | Oil gas signal processing and control system of ocean platform and communication device thereof |
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