CN207650289U - A kind of three-phase intelligent Digital-typed Generator electric parameters transducer - Google Patents
A kind of three-phase intelligent Digital-typed Generator electric parameters transducer Download PDFInfo
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- CN207650289U CN207650289U CN201721545101.2U CN201721545101U CN207650289U CN 207650289 U CN207650289 U CN 207650289U CN 201721545101 U CN201721545101 U CN 201721545101U CN 207650289 U CN207650289 U CN 207650289U
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Abstract
The utility model discloses a kind of three-phase intelligent Digital-typed Generator electric parameters transducers, including main control unit, the digital signal being connect with main control unit by I/O interfaces turns electric current ring element, electric energy output unit, RS485 communication units, survey calculation unit and OLED display unit, and the power circuit for transmitter power supply.The utility model uses Digital Measuring Technique and digital current loop technique, improves anti-interference ability.
Description
Technical field
The utility model is related to motor technology fields, more specifically, more particularly to a kind of digital hair of three-phase intelligent
Motor electric parameters transducer.
Background technology
Electric parameters transducer is a kind of by tested electrical parameter (such as electric current, voltage, power, frequency, power factor signal)
It is converted into DC current, DC voltage and output analog signal is isolated.Electric parameters transducer is mostly used in domestic power plant
Made of analog computing amplifier Combination Design, as analog electric parameters transducer.
Higher and higher with power plant intelligence degree, integrated system equipment is also more next more, results in device context
Electromagnetic environment also becomes increasingly complex, and traditional analog electric parameters transducer is easier to be interfered and output signal is caused to be beated.
It is fixed and partially narrow, core devices sampling using the existing analog electric parameters transducer range design of traditional technology
It is directly saturated after crossing range with CT, as a result causes to measure to export and be fluctuated between 0 and full scale.Such as occur in Power Plant in Chongqing
The accident of the technology electric parameters transducer is used together, since system transience failure causes transmitter output bounce, Bu Nengshi
Circuit electricity time of day is reflected on border, causes steam turbine to adjust malfunction, the major accident of larger fluctuation is caused to power grid.
Traditional Transmitters measurement and calibration is to prevent from loosening in transit after the completion of calibration using potentiometer regulation technology
Often its knob is fixed using the technique of drop wax, is less susceptible to using middle recalibration in the later stage.Calibrating mode also compares
Complexity, often only professional person can just be calibrated to perfect condition.
Not having human-computer interaction function for electric parameters transducer at present, is debugged in early period, later maintenance seems inconvenient,
Lead to the disadvantage debugged and maintenance cost is higher, less efficient.
With continuous universal, the continuous improvement of industrial automation technology of the technology of internet.Traditional electric parameters transducer
Due to not having digital communication technology and digital signal transmission technology, the trend that cannot be complied with nowadays is had a single function.
Utility model content
It is existing to overcome the purpose of this utility model is to provide a kind of three-phase intelligent Digital-typed Generator electric parameters transducer
The defects of technology.
In order to achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of three-phase intelligent Digital-typed Generator electric parameters transducer, including main control unit, pass through I/O interfaces and main control unit
The digital signal of connection turns electric current ring element, electric energy output unit, RS485 communication units, survey calculation unit and OLED and shows
Unit, and the power circuit for transmitter power supply.
Further, it includes the filter circuit being connected with each other and computation chip electricity that the digital signal, which turns electric current ring element,
The input terminal on road, the filter circuit is connect with survey calculation unit, and the output end of the computation chip circuit passes through I/O interfaces
It is connect with main control unit.
Further, the filter circuit includes resistance R5, resistance R6 and capacitance C3, the resistance R5 and resistance R6 mutual
Series connection, one end of the resistance R5 are connect with survey calculation unit, and one end of the resistance R6 is connect with main control unit, the electricity
Hold C3 to be connected between resistance R5 and resistance R6.
Further, the computation chip circuit includes the computation chip of model AT7022E, triode Q2 and resistance R9
With capacitance C5, the wherein second pin of computation chip is connect with survey calculation unit, the 6th pin and triode of computation chip
The base stage of Q2 connects, and the 5th pin of computation chip is connect with the emitter of triode Q2, the 7th pin of computation chip and three
The collector of pole pipe Q2 connects, and the collector connection+15V power supplys of triode Q2, the collector of triode Q2 also passes through capacitance
4th pin of C5 and computation chip connects, and the 4th pin of computation chip also passes through resistance R9 connection electric energy output units, meter
Measure the first pin connection+2.5V power supplys of chip, the 8th pin connection+5V power supplys of computation chip.
Further, the electric energy output unit is an optical coupling isolation circuit.
Compared with prior art, the utility model has the advantage of：The utility model uses Digital Measuring Technique and number
Formula electric current loop technique, improves anti-interference ability；Anti-saturation ability is improved using high current CT, prevents from exporting when failure unstable
It is fixed；It is integrated with friendly human-computer interaction interface, real-time display measurement data, it is convenient to adjust analog output range, be arranged
Messaging parameter, electrical energy pulse constant and its auxiliary setting, improve the efficiency of debugging and maintenance, have higher user experience
Effect.It uses digital communication technology and supports electric power MODBUS-RTU stipulations, meet that industrial automation interconnects becomes
Gesture.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram of the utility model three-phase intelligent Digital-typed Generator electric parameters transducer.
Fig. 2 is the circuit diagram that digital signal turns electric current ring element in the utility model.
Fig. 3 is the circuit diagram of electric energy output unit in the utility model.
Fig. 4 is the circuit diagram of RS485 communication units in the utility model.
Fig. 5 is the circuit diagram of power circuit in the utility model.
Fig. 6 is the circuit diagram of survey calculation unit in the utility model.
Fig. 7 is the circuit diagram of main control unit in the utility model.
Specific implementation mode
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear to be made to the scope of protection of the utility model
Define.
Refering to fig. 1 shown in-Fig. 7, the utility model provides a kind of three-phase intelligent Digital-typed Generator electric parameters transducer, including
Main control unit 1, the digital signal being connect with main control unit 1 by I/O interfaces turn electric current ring element 3, electric energy output unit 4,
RS485 communication units 6, survey calculation unit 2 and OLED display unit 5, and the power circuit 7 for transmitter power supply.
As shown in fig.2, it includes the filter circuit and computation chip being connected with each other that the digital signal, which turns electric current ring element 3,
The input terminal of circuit, the filter circuit is connect with survey calculation unit 2, and the output end of the computation chip circuit passes through I/O
Interface is connect with main control unit 1.
The digital signal turns electric current ring element 3 and receives the modulated pwm signal of main control unit 1, is then converted into the world
4~20mA output signals of standard.The filtered circuit conversion of signal of use is at the d. c. voltage signal of 0~3.3V to metering
Chip XTR117 is used, the output DC current signal that XTR117 passes through the voltage signal equal proportion of input.
The filter circuit includes resistance R5, resistance R6 and capacitance C3, and the resistance R5 and resistance R6 are serially connected, institute
The one end for stating resistance R5 is connect with survey calculation unit 2, and one end of the resistance R6 is connect with main control unit 1, the capacitance C3
It is connected between resistance R5 and resistance R6.
The computation chip circuit includes the computation chip of model AT7022E, triode Q2 and resistance R9 and capacitance
C5, the wherein second pin of computation chip are connect with survey calculation unit 2, the base of the 6th pin and triode Q2 of computation chip
Pole connects, and the 5th pin of computation chip is connect with the emitter of triode Q2, the 7th pin and the triode Q2 of computation chip
Collector connection, the collector connection+15V power supplys of triode Q2, the collector of triode Q2 also passes through capacitance C5 and meter
The 4th pin connection of chip is measured, the 4th pin of computation chip also passes through resistance R9 connection electric energy output unit 4, computation chip
The first pin connection+2.5V power supplys, the 8th pin connection+5V power supplys of computation chip.
As shown in fig.3, the electric energy output unit 4 is an optical coupling isolation circuit, it is to realize that isolation exports aforementioned meter
Measure chip electrical energy pulse output signal.
As shown in fig.4, RS485 communication units are the USART rs 232 serial interface signals for receiving main control unit 1, it is converted into
RS485 level, to reach isolation features, the power supply of electrical level transferring chip is that system+5V power supplys turn DC isolated power supply moulds by DC
It is obtained after block.
OLED display unit is mainly directly connected by winding displacement and main control unit 1 by liquid crystal producer OLED module, model:
The bus protocol of M128_64_SSD1306, use are serial ports USART agreements.4 Independent keys are devised in the present embodiment, are used
To receive the operation button information of user.
As shown in fig.7, the main control unit 1 uses ARM microcontrollers, crystal oscillating circuit, decoupling electricity are connected on pin
Hold, ferroelectric memory.
The embedded mainstream ARM technology platforms of the utility model set, digital sampling technique, band isolation digital communication skill
Art turns electric current loop technique, the electricity pick-up with isolation electrical energy pulse output circuit, man-machine interactive system with isolation digital signal
Device.
The utility model uses Digital Measuring Technique and digital current loop technique, improves anti-interference ability；Using big
Electric current CT improves anti-saturation ability, prevents from exporting when failure unstable；It is integrated with friendly human-computer interaction interface, real-time display is surveyed
Measure data, it is convenient to adjust analog output range, setting messaging parameter, electrical energy pulse constant and its auxiliary setting carry
High debugging and the efficiency safeguarded, have higher user experience effect.It uses digital communication technology and supports electric power
MODBUS-RTU stipulations meet the trend that industrial automation is interconnected.
Although being described in conjunction with the accompanying the embodiment of the utility model, patent owner can want in appended right
Various deformations or amendments are made within the scope of asking, and model is protected as long as described no more than the claim of the utility model
It encloses, should all be within the protection scope of the utility model.
Claims (5)
1. a kind of three-phase intelligent Digital-typed Generator electric parameters transducer, it is characterised in that：Including main control unit, pass through I/O interfaces
The digital signal being connect with main control unit turns electric current ring element, electric energy output unit, RS485 communication units, survey calculation unit
And OLED display unit, and the power circuit for transmitter power supply.
2. three-phase intelligent Digital-typed Generator electric parameters transducer according to claim 1, it is characterised in that：The number letter
It includes the filter circuit being connected with each other and computation chip circuit, the input terminal of the filter circuit and measurement number to turn electric current ring element
Computing unit connects, and the output end of the computation chip circuit is connect by I/O interfaces with main control unit 1.
3. three-phase intelligent Digital-typed Generator electric parameters transducer according to claim 2, it is characterised in that：The filtered electrical
Road includes resistance R5, resistance R6 and capacitance C3, and the resistance R5 and resistance R6 are serially connected, one end of the resistance R5 and measurement
Computing unit connects, and one end of the resistance R6 connect with main control unit, the capacitance C3 be connected to resistance R5 and resistance R6 it
Between.
4. three-phase intelligent Digital-typed Generator electric parameters transducer according to claim 2, it is characterised in that：The metering core
Piece circuit includes the computation chip of model AT7022E, triode Q2 and resistance R9 and capacitance C5, wherein the second of computation chip
Pin is connect with survey calculation unit, and the 6th pin of computation chip is connect with the base stage of triode Q2, and the 5th of computation chip the
Pin is connect with the emitter of triode Q2, and the 7th pin of computation chip is connect with the collector of triode Q2, the triode
The collector of the collector connection+15V power supplys of Q2, triode Q2 is also connected by the 4th pin of capacitance C5 and computation chip,
4th pin of computation chip also passes through resistance R9 connection electric energy output units, the first pin connection+2.5V electricity of computation chip
Source, the 8th pin connection+5V power supplys of computation chip.
5. three-phase intelligent Digital-typed Generator electric parameters transducer according to claim 1, it is characterised in that：The electric energy is defeated
It is an optical coupling isolation circuit to go out unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721545101.2U CN207650289U (en) | 2017-11-18 | 2017-11-18 | A kind of three-phase intelligent Digital-typed Generator electric parameters transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721545101.2U CN207650289U (en) | 2017-11-18 | 2017-11-18 | A kind of three-phase intelligent Digital-typed Generator electric parameters transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207650289U true CN207650289U (en) | 2018-07-24 |
Family
ID=62889221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721545101.2U Expired - Fee Related CN207650289U (en) | 2017-11-18 | 2017-11-18 | A kind of three-phase intelligent Digital-typed Generator electric parameters transducer |
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| Country | Link |
|---|---|
| CN (1) | CN207650289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856534A (en) * | 2018-12-18 | 2019-06-07 | 南京南自电力仪表有限公司 | A kind of generator electric parameters transducer based on the Hart communication technology |
-
2017
- 2017-11-18 CN CN201721545101.2U patent/CN207650289U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856534A (en) * | 2018-12-18 | 2019-06-07 | 南京南自电力仪表有限公司 | A kind of generator electric parameters transducer based on the Hart communication technology |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180724 Termination date: 20211118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |