CN209707585U - A kind of integral integration module - Google Patents
A kind of integral integration module Download PDFInfo
- Publication number
- CN209707585U CN209707585U CN201821596871.4U CN201821596871U CN209707585U CN 209707585 U CN209707585 U CN 209707585U CN 201821596871 U CN201821596871 U CN 201821596871U CN 209707585 U CN209707585 U CN 209707585U
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- communication
- processing module
- integral integration
- 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 - Fee Related
Links
- 230000010354 integration Effects 0.000 title claims abstract description 39
- 238000004891 communication Methods 0.000 claims abstract description 47
- 238000002955 isolation Methods 0.000 claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 40
- 230000015654 memory Effects 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 15
- 238000005070 sampling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 20
- 230000006870 function Effects 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 230000005621 ferroelectricity Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 102100028175 Abasic site processing protein HMCES Human genes 0.000 description 1
- 101001006387 Homo sapiens Abasic site processing protein HMCES Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
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 utility model relates to measure test, instrument and meter, technical field of integrated circuits, and in particular to a kind of integral synthesis
Module.
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.
Utility model content
In view of problems of the prior art, one of the purpose of this utility model is to provide a kind of comprehensive mould of integral
Block can be improved the measurement accuracy of measuring instrument using the integral integration module.
For this purpose, the utility model uses 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 utility model 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 signal of the integral one of preferred embodiment of integration module described in the utility model
Figure；
Fig. 2 is integral integration module described in the utility model with external loading, the circuit connection signal with measuring circuit
Figure；
Fig. 3 a- Fig. 3 c is the circuit structure principle of three-phase voltage front end isolation signals processing module described in the utility model
Figure；
Fig. 4 is the circuit structure schematic diagram of three-phase current Roots coil signal processing module described in the utility model；
Fig. 5 is the circuit structure schematic diagram of signal acquisition module described in the utility model；
Fig. 6 is the circuit structure schematic diagram of processor described in the utility model；
Fig. 7 is the circuit structure schematic diagram of memory described in the utility model；
Fig. 8 is the circuit structure schematic diagram of communication signal isolation module described in the utility model；
Fig. 9 a and Fig. 9 b are the circuit structure schematic diagrams of multichannel isolation regulated power supply described in the utility model；
Figure 10 is the circuit structure schematic diagram of communication module described in the utility model.
The utility model is further described below.But following examples is only the simple example of the utility model
Son, does not represent or limits the rights protection scope of the utility model, and the protection scope of the utility model is with claims
It is quasi-.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
For the utility model is better described, it is easy to understand the technical solution of the utility model, the typical case of the utility model
But non-limiting embodiment is as follows:
Integral being a highly integrated of integration module described in the utility model is directed to what the parameter measurement of three-phase electricity was applied
Product can be used in accurately measuring three-phase alternating voltage, three-phase phase current (true rms measurement), triple line electricity using genuine standard
Flow (true rms measurement), total active power, reactive power, power factor, each single-phase power, frequency, total active electrical degree, total nothing
In the measuring instrument instrument of at least one of the electric parameters such as function electric degree.As a preferred embodiment, the integral integration module tool
There is RS-485 communication interface.Measured data can be controlled by communication to the higher level needed for other, without other DA digital-to-analogues
Conversion process is conducive to the raising of measurement accuracy.The module can be widely applied to electric power, communication, railway, traffic, environmental protection, stone
In the industries such as change, steel, for monitor the large scale equipment of three-phase motor driving electric current and electric quantity consumption situation and power distribution network and
The metering and monitoring of three-phase electric energy in enterprise.
Fig. 1 is the modular construction signal of the integral one of preferred embodiment of integration module described in the utility model
Figure；Integral integration module described in the utility model is illustrated below with reference to Fig. 1, it is to note that applicant needs strong
What is adjusted is the exemplary illustration for the basic utility model design that structural schematic diagram described in Fig. 1 is only to the utility model, must not
It is not understood as the utility model uniquely 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, Lai Shixian 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 is integral integration module described in the utility model with external loading, the circuit connection signal with measuring circuit
Figure；Wherein integral integration module each terminal shown in Fig. 2 is defined as follows (table 1)
Table 1
| Terminal | Definition | Explanation | Terminal | Definition | Explanation |
| 1 | V+ | 12~36V power supply is just | 24 | U11 | A phase voltage input 1 |
| 2 | V- | Power ground | 23 | U12 | A phase voltage input 2 |
| 3 | PGND | Protecting field | 22 | U21 | B phase voltage input 1 |
| 4 | A+ | 485 signals are just | 21 | U22 | B phase voltage input 2 |
| 5 | B- | 485 signals are negative | 20 | U31 | C phase voltage input 1 |
| 6 | GND | Communicatively | 19 | U32 | C phase voltage input 2 |
| 7 | NC | It is empty | 18 | I11 | A phase current inputs 1 (Roots's coil * is just) |
| 8 | NC | It is empty | 17 | I12 | A phase current input 2 (Roots's coil-is negative) |
| 9 | NC | It is empty | 16 | I21 | B phase current inputs 1 (Roots's coil * is just) |
| 10 | NC | It is empty | 15 | I22 | B phase current input 2 (Roots's coil-is negative) |
| 11 | NC | It is empty | 14 | I31 | C phase current inputs 1 (Roots's coil * is just) |
| 12 | NC | It is empty | 13 | I32 | C phase current input 2 (Roots's coil-is negative) |
Fig. 3 a- Fig. 3 c is that the circuit structure of three-phase voltage front end isolation signals processing module 10 described in the utility model is former
Reason 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 utility model people emphasizes again that
State the circuit diagram that basic principle is also applied for mentioning hereinafter, in some specific cases, the circuit diagram given by specification
When having been able to clearly express the connection relationship between circuit, to save specification length, it is retouched in specification word part
Stating will be omitted or simplified.
Fig. 4 is the circuit structure schematic diagram of three-phase current Roots coil signal processing module described in the utility model；Its
I11, I12, I21, I22, I31, I32 signal input part in middle Fig. 4 correspond to signal input part I11, I12 in Fig. 2, I21,
I22, I31, I32, as shown in Figure 2 described signal input part I11, I12, I21, I22, I31, I32 respectively with measure three phase-change pressures
The transformer A of device, the both ends of Roots's coil of the electric current of transformer B, transformer C are connected.
Fig. 5 is the circuit structure schematic diagram of signal acquisition module described in the utility model, the signal acquisition module packet
CS5451A chip is included, CS5451A is that Cirrus Logic company is the highly integrated delta-sigma that the energy measures industrial design
A/D converter.CS5451A is integrated with 6 delta-sigma A/D converters, filter and one and microcontroller on a single die
Or the joining serial line interface of DSP.The current divider and resistance divider of CS5451A and current transformer or measurable electric current or survey
Amount is directly connected to transformer.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 described in the utility model；The processor includes:
LPC2138FBD64 chip, LPC2138FBD64 chip are to be supported by the Pu En Zhi semiconductor company (NXP) production based on one
32 ARM7TDMI-SCPU of real-time simulation benefit Embedded Trace, and the high speed flash storage with 512kB insertion.Pass through
Boot load module realizes in-system programming/in-service units (ISP/IAP) in piece.128 bit wide interfaces/accelerator can be real
It is now up to 60MHz working frequency, 32 codes is enable to run under maximum clock rate.Lesser encapsulation and very low power consumption make
LPC2138 is especially suitable in the small applications such as access control and POS machine；CP is due to the built-in serial communication interface of wide scope
With the on-chip SRAM of 32kB, they are also admirably suitable for communication gate, protocol converter, software modem, speech recognition, low side
Imaging provides large-scale buffer area and powerful processing function for these applications.Multiple serial line interfaces, including 2 16C550
Industrial standard UART, 2 High Speed I IC buses (400kbit/s), SPI and with buffer function and data length changeable
SSP.Multiple 32 bit timing devices, 2 10 8 tunnels ADC, 1 10 channel DAC, PWM, 47 GPIO and up to 9 edges
Or the external interrupt of level triggers is make them particularly suitable for use in Industry Control Application system.For LPC2138FBD64 and other electricity
For the connection type on road on the one hand according to the use characteristic of LPC2138FBD64 chip itself, still further aspect is equal according to Fig.6,
Than more visible, character property description is not being carried out here to save length.
Fig. 7 is the circuit structure schematic diagram of memory described in the utility model；The memory includes FM24CL64 core
Piece, FM24CL64 are the 64K bit non-volatile memories using the manufacture of advanced ferroelectricity technique.Ferroelectric Random Access Memory (FRAM)
With non-volatile, and can as RAM fast reading and writing.Data in FM24CL64 can save 45 years after a power failure.
Opposite EEPROM or other nonvolatile memories, FM24CL64 have 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 described in the utility model, the communication signal every
It include ADUM1201 chip from module, ADUM1201 is the two-channel digital isolator using 1/1 channel direction, is based on
ADI companyTechnology.These isolating devices combine high-speed cmos and single-chip transformer technology together, have
Better than the outstanding performance characteristic of the alternative devices such as photo-coupler.ICoupler device do not have to LED and photodiode, because without
In the presence of difficult design generally relevant to photo-coupler.Simple iCoupler digital interface and stable performance feature, can disappear
Except the current transfer ratio that photo-coupler usually has is not known, nonlinear transfer function and temperature and service life influence etc. are asked
Topic.These iCoupler products do not need peripheral driver and other discrete devices.In addition, in the comparable feelings of signal data rate
Under condition, 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 described in the utility model；Wherein Fig. 9 a
It is voltage regulator circuit structure schematic diagram, Fig. 9 b is isolation circuit structure principle chart, and the voltage regulator circuit and isolation circuit are electricity
The common basic circuit elements in field, Fig. 9 a and 9b are merely exemplary explanation, and those skilled in the art are without prejudice to the application
In the case where purpose of utility model, 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 described in the utility model；The communication module includes
SP485EEN chip is enhanced -485 transceiver of low-power consumption half-duplex RS, has RS485 communication interface, measured data
It is controlled by communicating to the higher level needed for other, without other DA digital-to-analogue conversion processes, it is high to measure essence.
The core devices of integration module described in the utility model are 2, use 32 arm processor LPC2138 and
6 16, channel ammeter dedicated A/D chip CS5451A, 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, the new approaches and key of the utility model: using integrated circuit, carries out high-speed ADC to input analog quantity and is converted to
Digital quantity, and integral operation is carried out using high speed numerical processor.Others do not have similar products to pass through to result for another example after operation
DAC is converted to the digital circuit of analog quantity, but the data after integral are directly carried out electrical parameter metering, in this way without centre
DA, AD process, 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 utility model is manufactured using modern large scale integrated circuit technology using stringent production technology, and inside uses
Advanced Anti-Jamming Technique overcomes the deficiency of analogue integrator applied to the digital integrator of Rogowski coil current transformer
Place realizes primary current signal accurate reproduction.Compared with analogue integrator, digital integrator not only stablize by performance, phase
Characteristic 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 utility model is highly integrated digitlization integrator, further comprises function of measuring.Therefore more devices are solved
Series connection measurement bring overlay error, product have 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 described in the utility model 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 utility model illustrates the detailed construction feature of the utility model through the foregoing embodiment, but
The utility model is not limited to above-mentioned detailed construction feature, that is, does not mean that the utility model must rely on above-mentioned detailed construction
Feature could be implemented.It should be clear to those skilled in the art, any improvement to the utility model, practical new to this
The equivalence replacement of component selected by type and increase, the selection of concrete mode of accessory etc., all fall within the utility model
Within protection scope and the open scope.
Preferred embodiments of the present invention are described in detail above, still, the utility model is not limited to above-mentioned reality
Apply the detail in mode, in the range of the technology design of the utility model, can to the technical solution of the utility model into
The a variety of simple variants of row, these simple variants belong to the protection scope of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the utility model is to each
No further explanation will be given for the possible combination of kind.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (10)
1. a kind of integral integration module, it is characterised in that: include: voltage front end isolation signals processing module, electric current Roots's coil
Signal processing module, processor, memory, communication signal isolation module, multichannel isolation regulated power supply, leads at signal acquisition module
Interrogate module；The voltage front end isolation signals processing module and the electric current Roots coil signal processing module respectively with the letter
Number acquisition module is connected, and the processor is isolated with the signal acquisition module, the memory, the communication signal respectively
Module is connected with multichannel isolation regulated power supply；The communication signal isolation module is also connected with the communication module, institute
Multichannel isolation regulated power supply is stated also to be connected with the communication module.
2. integral integration module as described in claim 1, it is characterised in that: the voltage front end isolation signals processing module is
Three-phase voltage front end isolation signals processing module, the electric current Roots coil signal processing module are three-phase current Roots coil letter
Number processing module.
3. integral integration module as described in claim 1, it is characterised in that: the signal acquisition module includes AD acquisition
CS5451 chip.
4. integral integration module as described in claim 1, it is characterised in that: the processor includes LPC2138FBD64 core
Piece.
5. integral integration module as described in claim 1, it is characterised in that: the communication signal isolation module includes
ADUM1201 chip.
6. integral integration module as described in claim 1, it is characterised in that: the communication module includes SP485EEN chip,
With RS485 communication interface.
7. integral integration module as described in claim 1, it is characterised in that: the integral integration module can be used in mutually electricity
The measurement of pressure, phase current, line voltage, line current, power, at least one parameter in electric energy multiple parameters.
8. integral integration module as described in claim 1, it is characterised in that: three-phase voltage front end isolation signals handle mould
Block is isolated using mutual inductor, and pressure resistance reaches DC2500V.
9. integral integration module as described in claim 1, it is characterised in that: the integral integration module temperature drift: less
In 50ppm/ DEG C.
10. integral integration module as described in claim 1, it is characterised in that: the signal acquisition module is same using 6 channel 4K
Step sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821596871.4U CN209707585U (en) | 2018-09-29 | 2018-09-29 | A kind of integral integration module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821596871.4U CN209707585U (en) | 2018-09-29 | 2018-09-29 | A kind of integral integration module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209707585U true CN209707585U (en) | 2019-11-29 |
Family
ID=68634604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821596871.4U Expired - Fee Related CN209707585U (en) | 2018-09-29 | 2018-09-29 | A kind of integral integration module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209707585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085421A (en) * | 2018-09-29 | 2018-12-25 | 无锡北科自动化科技有限公司 | A kind of integral integration module |
-
2018
- 2018-09-29 CN CN201821596871.4U patent/CN209707585U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085421A (en) * | 2018-09-29 | 2018-12-25 | 无锡北科自动化科技有限公司 | A kind of integral integration module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205992050U (en) | A kind of insulation line monitoring device check system | |
| CN102692883B (en) | An analog input circuit for engineering-machinery-dedicated controller | |
| CN101915903A (en) | Power meter calibrating system and power meter calibrating method for intelligent electric meter | |
| CN105306056A (en) | Scale factor temperature compensating method of current frequency conversion circuit | |
| CN209327889U (en) | 4-20mA programmable precision current source | |
| CN103888140A (en) | Analog-to-digital conversion error self-correction device and method | |
| CN105680860B (en) | Improve the circuit and method of microcontroller A/D conversion accuracy | |
| CN103148055B (en) | Electro-hydraulic servo valve frequency characteristic test system | |
| CN204302480U (en) | A kind of monolithic processor controlled teslameter | |
| CN103995526B (en) | Power-supply controller of electric analog quantity parameter calibration system and method based on CAN | |
| CN209707585U (en) | A kind of integral integration module | |
| CN109085421A (en) | A kind of integral integration module | |
| CN203881815U (en) | Simple high-precision DC electronic load | |
| CN103383443B (en) | Modularization three-phase instrument calibration device used for intelligent electric network | |
| CN107315156B (en) | High-precision direct-current standard electric energy meter | |
| CN103616086B (en) | Thermal resistance temperature transmitter | |
| CN103235175B (en) | Power consumption detection circuit | |
| CN108562795A (en) | A kind of solar cell impedance measurement system | |
| CN105159349A (en) | Temperature change simulating device and method | |
| CN103163924A (en) | System on chip (SoC) chip and compensation method and compensation device of operational amplifier offset voltage thereof | |
| CN204389668U (en) | A kind of ground voltage influence amount simulator | |
| CN204116452U (en) | A kind of measurement mechanism for transmission line of electricity | |
| CN207946514U (en) | An electronic transformer multi-acquisition channel calibrator | |
| CN202281803U (en) | Pre-calibrated electric energy metering circuit | |
| CN114325535A (en) | Temperature sampling method for direct current sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |