CN207650595U - A kind of motor multi-protection test and control device - Google Patents
A kind of motor multi-protection test and control device Download PDFInfo
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- CN207650595U CN207650595U CN201721545100.8U CN201721545100U CN207650595U CN 207650595 U CN207650595 U CN 207650595U CN 201721545100 U CN201721545100 U CN 201721545100U CN 207650595 U CN207650595 U CN 207650595U
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- Control Of Electric Motors In General (AREA)
- Control Of Ac Motors In General (AREA)
- Protection Of Generators And Motors (AREA)
Abstract
The utility model discloses a kind of motor multi-protection test and control devices; including current transformer, sampling unit, transducing unit, display unit, communication module, input and output unit and control unit; the current transformer is connect with sampling unit; the sampling unit, transducing unit, display unit, communication module and input and output unit are connect with control unit; the input and output unit includes outputing control circuit and to open into detection circuit, it is described output control circuit and open connect with control unit into detection circuit.The utility model, which realizes, integrates the functions such as measurement, protection, control, communication.
Description
Technical field
The utility model is related to motor technology fields, and more specifically, more particularly to a kind of motor comprehensive protection is surveyed
Control device.
Background technology
Phase asynchronous ac motor (hereinafter referred to as motor) is widely used in coal mine, petrochemical industry, smelting, electric power, building
Etc. industries field of power distribution, it is ensured that the security control and economical operation of motor are just particularly important, motor protection observing and controlling
Device is widely used.Traditional motor protecting device based on fuse, electrothermal relay, but sensitivity is low, error is big,
Stability is poor, and protection is unreliable, and protecting effect is not satisfactory, after the collection measurement that is proposed based on 8/16 microcontroller be protected in
The first generation measuring and controlling protective device of one, not in time, function is not also comprehensive for the microcontroller reaction speed slow-response used.Thus
Domestic minority producer also has developed the motor protection product of new generation based on 32 microcontrollers, but wiring phase in actual use
To more complicated, input and output terminal is fewer so that electrical design personnel can only sacrifice part control and monitoring function, is opening
It is also the underaction being fixed to enter to output the corresponding function of terminal, outputs the control mode of relay and can only control break-make, opens
The normality level entered is also fixed, this have the consequence that having a single function, compatibility is not strong, reliability is low.It is existing electronic
Machine protective device does not have real-time status, the motor operation management related information of intuitive monitoring motor, and failure is difficult to
Investigation.
Utility model content
The purpose of this utility model is to provide a kind of motor integrating the functions such as measurement, protection, control, communication
Integrated protection and monitoring device.
In order to achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of motor multi-protection test and control device, including current transformer, sampling unit, transducing unit, display unit,
Communication module, input and output unit and control unit, the current transformer are connect with sampling unit, the sampling unit, change
Unit, display unit, communication module and input and output unit is sent to be connect with control unit, the input and output unit includes opening
Go out control circuit and to open into detection circuit, it is described output control circuit and open connect with control unit into detection circuit.
Further, the sampling unit includes that three phase metering chip, bleeder circuit, the triode of model V9203 are put
Big circuit, the three phase metering chip the 26th, 29 pins exported after being connect with transistor amplifier, the three phase metering core
17th pin of piece is connect with bleeder circuit.
Further, the bleeder circuit includes resistance R14, resistance R16 and capacitance C8, one end of the resistance R14 with+
5V power supplys connect, and the other end of resistance R14 after resistance R16 by being grounded, and capacitance C8 and resistance R16 are parallel with one another, the three-phase
17th pin of computation chip is connected between resistance R14 and resistance R16.
Further, the transistor amplifier includes triode Q1 and triode Q2, the base stage of the triode Q1
It is connect with the 29th pin of three phase metering chip, the collector connection+3.3V power supplys of triode Q1, the emitter of triode Q1 is made
For output end, the base stage of the triode Q2 is connect with the 26th pin of three phase metering chip, and the connection of the collector of triode Q2+
3.3V power supplys, the emitter of triode Q2 is as output end.
Further, described control unit is the microcontroller of model STM32.
Further, the display unit is LCD display.
Further, described to output the driver U1 and model HF32FA-G/ that control circuit includes model ULN2003
The 16th pin of the relay JQ1, the driver U1 of 5-HSL2G are connect by resistance R1 with the 2nd pins of relay JQ1.
Further, it is described open into detection circuit include model TLP785 optocoupler, and the ends PCL1 of the optocoupler and
The ends PLC- connect the anode and cathode of an isolated power supply.
Further, the transducing unit includes the electric current loop chip and low-pass filter of model XTR117, electric current loop
The output end of the input connection low-pass filter of chip.
Further, the communication module is RS485 communication modules.
Compared with prior art, the utility model has the advantage of：The utility model realize basic measurement, control,
Defencive function, realize on this basis input and output terminal function can custom programming, the original state of input and output
Can also custom programming, and the output for outputing relay supports pulse and level two ways, the spaced time of pulse also may be used
With custom programming so that control function is more flexible, and operation is more convenient, and system redundancy higher enhances reliability.
Electric motor starting and tripping can be shown in operational management picture with real-time display primary side wiring simulation drawing on panel liquid crystal
Relevant information, facilitate operational management and later maintenance.In addition, external in input and output, analog output, 485 communications etc.
Interface design uses quarantine measures, has ensured safe operation.
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 principle framework figure of the utility model motor multi-protection test and control device.
Fig. 2 is the circuit diagram of sampling unit in the utility model motor multi-protection test and control device.
Fig. 3 is the circuit diagram that control circuit is outputed in the utility model motor multi-protection test and control device.
Fig. 4 is the circuit diagram opened in the utility model motor multi-protection test and control device into detection circuit.
Fig. 5 is the circuit diagram of transmitting module circuit in the utility model motor multi-protection test and control device.
Fig. 6 is the circuit diagram of communication module circuitry in the utility model motor multi-protection test and control device.
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.
As shown in fig.1, a kind of motor multi-protection test and control device of the utility model offer, including current transformer,
Sampling unit, transducing unit, display unit, communication module, input and output unit and control unit, the current transformer with adopt
Sample unit connects, and the sampling unit, transducing unit, display unit, communication module and input and output unit are and control unit
Connection, the input and output unit includes outputing control circuit and opening into detection circuit, described to output control circuit and open into inspection
Slowdown monitoring circuit is connect with control unit.
The utility model, which realizes, integrates the functions such as measurement, protection, control, communication.
As shown in fig.2, the sampling unit includes three phase metering chip, bleeder circuit, the triode of model V9203
Amplifying circuit, the most fast renewal rate of three phase metering chip V9203 measuring speeds are 20ms, and the 26th, the 29 of three phase metering chip draws
Foot exports after being connect with transistor amplifier, i.e., the 26th, 29 feet by transistor amplifier by amplified electrical energy pulse
Signal is exported, and the 17th pin of three phase metering chip is connect with bleeder circuit, three phase metering chip the 40th, 41,42 feet
With SPI communications protocol by data transfer to main control unit.
To obtain the rolling electrical phenomena of motor in the process of running, the utility model dexterously applies three phase metering chip
Detection of power loss function, construct bleeder circuit in its 17th foot, when system voltage be less than 3.3V when three phase metering chip can lead to
It crosses interrupt pin and power down information is reported to main control unit.The signal of electric current and voltage transformer give by marked as IAP,
IBP, ICP, UAP, UBP, UCP access three phase metering chip pin.
The bleeder circuit includes resistance R14, resistance R16 and capacitance C8, and one end of resistance R14 is connect with+5V power supplys,
For the other end of resistance R14 by being grounded after resistance R16, capacitance C8 and resistance R16 are parallel with one another, and the 17th of three phase metering chip draws
Foot is connected between resistance R14 and resistance R16.
The transistor amplifier includes triode Q1 and triode Q2, base stage and the three phase metering core of triode Q1
29th pin of piece connects, the collector connection+3.3V power supplys of triode Q1, and the emitter of triode Q1 is as output end, and three
The base stage of pole pipe Q2 is connect with the 26th pin of three phase metering chip, the collector connection+3.3V power supplys of triode Q2, triode
The emitter of Q2 is as output end.
The control unit is the microcontroller of model STM32, carries clock chip and memory, the power supply of microcontroller
I/O port is connected with decoupling capacitance.Control unit is connect with sampling unit by the form of contact pin, and the survey of acquisition sampling unit is responsible for
Data are measured, that input and output unit is told before being driven when being out of order by measurement test outputs relay, by failed motor
It is cut off from power grid.Control unit is connect into detection circuit by the form of contact pin with outputing control circuit and open, and is detected
Signal acquisition user instruction, contactor, the circuit-breaker status of intake control the relay of input and output unit by IO level
Output.Control unit is connect with display unit by the form of contact pin, with the parallel port FSMC protocol integrated test system LCD liquid of microcontroller
It is brilliant.Control unit is connect with transducing unit by the form of contact pin, is exported with the PWM registers control duty ratio of microcontroller,
To reach the function of making transmitting module export 4-20mA or 0-20mA.Control unit is connected with communication module by the form of contact pin
It connects, physical connection is showed by the USART causes for gossip of microcontroller, modbus agreements are realized on software.
The display unit is LCD display, and there are 8 LED lamps and 5 Independent keys, the utility model to use
The liquid crystal dot matrix screen that one piece of resolution ratio is 128*128, it is main to show measurement data and user setting menu.The function of button is main
It is the human-computer interaction realized with user, wherein the function of retaining a button is to reset the malfunction of motor.This practicality is new
Type devise 8 LED lamps be used to refer to startup, stopping, operation, failure, on the spot, a distant place, communication, the protective devices such as the machine shape
State.
As shown in fig.3, described outputs the driver U1 and model that control circuit includes model ULN2003
The relay JQ1 of HF32FA-G/5-HSL2G, the 16th pin of the driver U1 are drawn by resistance R1 and relay JQ1 the 2nd
Foot connects, the i.e. controllable relay JQ1 of the low and high level by controlling input pin.
As shown in fig.4, it is described open into detection circuit include model TLP785 optocoupler, realize input and internal circuit
Isolation, and the ends PCL1 of the optocoupler connect the anode and cathode of an isolated power supply with the ends PLC-.
As shown in fig.5, the function of the transducing unit, which is the PWM wave for being passed to control unit, is converted to 0~20mA
Output, transducing unit includes the electric current loop chip and low-pass filter of model XTR117, the input connection of electric current loop chip
The output end of low-pass filter.When in use, the low-pass filter being made of resistance R5, resistance R6 and capacitance C3 is by high-frequency PWM
Signal is filtered into the d. c. voltage signal of 0-3.3V, and the input of electric current loop chip connects the output of low-pass filter, electric current loop chip
By the proportional output 0-20mA signals of the DC voltage of input.
As shown in fig.6, the communication module is RS485 communication modules.Communication module receives master control list by serial ports
The USART rs 232 serial interface signals of member, are converted into RS485 level, and to reach isolation features, the power supply of electrical level transferring chip is system
+ 3.3V power supplys obtain 3.3V after DC turns DC isolated power supply modules.
The current transformer is to give the proportional 0-3.75V signals that are converted to of the electric current of motor primary side to sampling list
Member uses, and current transformer is connect by cable with protective device.
For the utility model other than realizing and the basic functions such as measuring, control, protect, communicate, the utility model can basis
It is actual to need to devise primary circuit state simulation figure, open into and output terminal function to redefine, open into and output initial shape
State custom programming outputs control mode custom programming, outputs pulse width time custom programming, operation and maintenance information
Deng, that is to say, that motor multi-protection test and control device provided by the utility model can be according to the requirement of actual motion motor
Carry out corresponding secondary development.Such as it is shown below：
Primary circuit state simulation figure in the utility model includes real-time display circuit-breaker status, contactor state and electricity
Motivational state, when detecting breaker intake break-make, breaker shows that picture changes therewith；When detecting that contactor opens
When entering amount break-make, contactor shows that picture changes therewith；When motor is currently running, motor symbol also can be in picture
Rotation, be otherwise stationary state.The method of realization is mainly the picture point and setting-out power function using LCD.
The utility model, which realizes, to be opened into and outputs terminal function and redefine, and software is stored by defining a sharing body
The function number of user setting, it is shown in the following example：
When detecting the variation of a certain intake, search reference numeral and may know that corresponding operating function, then into
The corresponding function treatment of row.The amount of outputing terminal function custom feature is also to be realized by establishing similar structure.
The utility model, which realizes, opens into and outputs original state custom programming, for the amount of outputing be initially at it is normally closed still
Normally open is stored in the data of a 16Bit, state 1 represent normally opened 0 represent it is normally closed, wherein the state for opening 0-11 is
The original state of intake user setting may know that the break-make shape of external switch by being compared with corresponding position when intake detects
State.The original state for outputing relay is stored in the data of a 8Bit, state 1 represent normally closed 0 represent it is normally opened, wherein opening 0-
8 states are the original state of the amount of outputing user setting, and when output directly exports corresponding bit and can control relay
Output.
The control mode custom programming of outputing of the utility model is broadly divided into level output and pulse output, for level
Output is most directly to control the break-make of relay, and it is then when reaching the pulsewidth of user setting after relay is attracted that pulse, which exports,
Between after disconnect relay, realize pulse output, this is very useful to circuit breaker trip coil.
The pulse width time custom programming of outputing of the utility model is mainly to control the width of relay pulse output,
For controlling the electrical equipment of breaker one kind.
The operation and maintenance information of the utility model includes motor start-up time, motor stop time, motor operation
Number, motor tripping times, motor start-up used time etc., motor start-up time are after motor start-up by the instant time
It stores and starts in time data structure, and number of operations adds 1；The motor start-up time is will be instant after motor stopping
In time storage to stop time data structure, and tripping times add 1；The motor start-up used time is to subtract the time of operation to open
The dynamic time；This partial function facilitates maintenance management.
The utility model realizes basic measurement, control, defencive function, realizes the end of input and output on this basis
Subfunction can custom programming, the original state of input and output can also custom programming, and output the output branch of relay
Hold pulse and level two ways, the spaced time of pulse can also custom programming so that control function is more flexible, operation
More convenient, system redundancy higher enhances reliability.It can be simulated with real-time display primary side wiring on panel liquid crystal
Figure, the relevant information of electric motor starting and tripping can be shown in operational management picture, facilitates operational management and later maintenance.
In addition, using quarantine measures in external interfaces designs such as input and output, analog output, 485 communications, safe fortune has been ensured
Row.
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 (10)
1. a kind of motor multi-protection test and control device, it is characterised in that：Including current transformer, sampling unit, transducing unit,
Display unit, communication module, input and output unit and control unit, the current transformer is connect with sampling unit, described to adopt
Sample unit, transducing unit, display unit, communication module and input and output unit are connect with control unit, the input and output
Unit includes outputing control circuit and to open into detection circuit, described to output control circuit and open into detection circuit and control unit
Connection.
2. motor multi-protection test and control device according to claim 1, it is characterised in that：The sampling unit includes type
Number be V9203 three phase metering chip, bleeder circuit, transistor amplifier, the three phase metering chip the 26th, 29 pins
It is exported after being connect with transistor amplifier, the 17th pin of the three phase metering chip is connect with bleeder circuit.
3. motor multi-protection test and control device according to claim 2, it is characterised in that：The bleeder circuit includes electricity
Resistance R14, resistance R16 and capacitance C8, one end of the resistance R14 are connect with+5V power supplys, and the other end of resistance R14 passes through resistance
It is grounded after R16, capacitance C8 and resistance R16 are parallel with one another, and the 17th pin of the three phase metering chip is connected to resistance R14 and electricity
Between resistance R16.
4. motor multi-protection test and control device according to claim 2, it is characterised in that：The transistor amplifier
Including triode Q1 and triode Q2, the base stage of the triode Q1 is connect with the 29th pin of three phase metering chip, triode
Collector connection+3.3V the power supplys of Q1, the emitter of triode Q1 is as output end, base stage and the three-phase meter of the triode Q2
The 26th pin connection of chip is measured, the collector connection+3.3V power supplys of triode Q2, the emitter of triode Q2 is as output
End.
5. motor multi-protection test and control device according to claim 1, it is characterised in that：Described control unit is model
For the microcontroller of STM32.
6. motor multi-protection test and control device according to claim 1, it is characterised in that：The display unit is LCD
Display screen.
7. motor multi-protection test and control device according to claim 1, it is characterised in that：It is described to output control circuit packet
Include the of the relay JQ1, the driver U1 of the driver U1 and model HF32FA-G/5-HSL2G of model ULN2003
16 pins are connect by resistance R1 with the 2nd pins of relay JQ1.
8. motor multi-protection test and control device according to claim 1, it is characterised in that：It is described to open into detection circuit packet
The optocoupler of model TLP785 is included, and the ends PCL1 of the optocoupler connect the anode and cathode of an isolated power supply with the ends PLC-.
9. motor multi-protection test and control device according to claim 1, it is characterised in that：The transducing unit includes type
Number be XTR117 electric current loop chip and low-pass filter, electric current loop chip input connection low-pass filter output end.
10. motor multi-protection test and control device according to claim 1, it is characterised in that：The communication module is
RS485 communication modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721545100.8U CN207650595U (en) | 2017-11-18 | 2017-11-18 | A kind of motor multi-protection test and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721545100.8U CN207650595U (en) | 2017-11-18 | 2017-11-18 | A kind of motor multi-protection test and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207650595U true CN207650595U (en) | 2018-07-24 |
Family
ID=62890117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721545100.8U Expired - Fee Related CN207650595U (en) | 2017-11-18 | 2017-11-18 | A kind of motor multi-protection test and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207650595U (en) |
-
2017
- 2017-11-18 CN CN201721545100.8U patent/CN207650595U/en not_active Expired - Fee Related
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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: 20180724 Termination date: 20211118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |