CN106602961A - Disconnecting switch operating mechanism driver based on single chip microcomputer - Google Patents
Disconnecting switch operating mechanism driver based on single chip microcomputer Download PDFInfo
- Publication number
- CN106602961A CN106602961A CN201611202447.2A CN201611202447A CN106602961A CN 106602961 A CN106602961 A CN 106602961A CN 201611202447 A CN201611202447 A CN 201611202447A CN 106602961 A CN106602961 A CN 106602961A
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- China
- Prior art keywords
- chip microcomputer
- circuit
- isolation
- operating mechanism
- voltage
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
Abstract
The invention provides a disconnecting switch operating mechanism driver based on a single chip microcomputer. The disconnecting switch operating mechanism driver comprises a wide-voltage DC voltage isolation measuring circuit, a switching value isolation acquiring circuit, a temperature and humidity acquisition circuit, a driving current detection circuit, an IGBT driving circuit, a relay isolation driving circuit, a USB anti-static communication circuit and a 485 lightning protection communication circuit which are connected with the single chip microcomputer in sequence. The disconnecting switch operating mechanism driver has the advantages that: the driver adapts to the AC/DC wide voltage and solves the problems that the voltage fluctuations of a power grid along the railway line are great and the like; the motor drive adopts an IGBT duty ratio automatic adjusting method for soft starting, thereby being capable of greatly reducing a motor start-up current and the impact thereof on a transmission part, and being suitable for wide voltage requirement; the start-up current is reduced from 3-5 times the original motor rated current to be approximately equal to the motor rated current; and the disconnecting switch operating mechanism driver provides event logging and wave recording functions, and can read historical data quickly to facilitate fault analysis and equipment health management.
Description
Technical field
This device is related to a kind of SCM Based isolator operating mechanism driver, and this invention is suitable for new isolation
The drive control of switch, Temperature and Humidity Control, Control on Communication, failure and health control.
Background technology
At present, it is inside 10kV-220kV isolator operating mechanisms case to adopt relay-contactor as motor-driven more
Core, is controlled while being aided with temperature and humidity controller and carrying out humiture state to its inside.With on off state collection capacity
Constantly increase remote control and measurement parameter with disconnecting switch day by day to increase, needed with the operating mechanism box of existing structure a large amount of
Signal cable cause cost ramp and be difficult transmission analog signalses carry out monitor in real time while cannot provide such as event
The function such as record, record ripple, health control and failure predication, quick on-line debugging, traditional relay structural cable control program is
Railway intelligentized design operation demand cannot be met.Developing intellectual resource disconnecting switch driving means can not urgently be treated.
The content of the invention
To solve problem present in above-mentioned technology, it is an object of the invention to provide a kind of SCM Based disconnecting switch
Operating mechanism driver, the driving means can meet operating mechanism Motor drive, humiture automatically control, it is Control on Communication, online
Debugging, logout and record wave energy, so as to reach the function needed for Intelligent isolation switch.
For achieving the above object, the technical solution used in the present invention be to provide a kind of driver include successively with monolithic
The Width funtion DC voltage isolated measurement circuit of machine connection, switching value isolation Acquisition Circuit, temperature humidity Acquisition Circuit, driving electricity
Current detection circuit, IGBT drive circuit, relay isolated drive circuit, USB antistatics telecommunication circuit and 485 lightning protection communication electricity
Road.
The Width funtion DC voltage measuring circuit will be sent after the signal entered after external power source rectified bridge conversion isolation
To Chip Microcomputer A/D pin, switching value isolation Acquisition Circuit will deliver to single-chip processor i/o after external switch amount signal converted isolation, temperature
Outside humiture acquired converted signals are delivered to single-chip microcomputer by degree humidity collection circuit, and motor is driven by driving current detection circuit
Galvanic electricity delivers to Chip Microcomputer A/D pin after flowing through isolation conversion, single-chip microcomputer sends duty cycle signals Jing IGBT drive circuits and amplifies driving
Motor, single-chip microcomputer send low and high level signal Jing relays isolated drive circuit and amplify rear-guard motor type relay, the communication of USB antistatics
Circuit will be usb communication signal converted after deliver to single chip communication pin, 485 lightning protection telecommunication circuits by 485 signal of communication Jing every
Single chip communication pin is delivered to after conversion.
The invention has the beneficial effects as follows：
1 driving equipment adapt to alternating current-direct current Width funtion, meet Along Railway line voltage float it is big the problems such as.
2 Motor drives carry out soft start using IGBT dutycycle adjust automatically modes, can significantly reduce electric motor starting electric current
With its impact to drive disk assembly, while adapt to Width funtion demand.Starting current is reduced for 3-5 times by original Rated motor electric current
To being approximately equal to Rated motor electric current.
3 provide event recording function and record wave energy, can quickly read historical data and facilitate accident analysis and equipment health
Management.This device provides two-region event recording function (all record, error loggings) and records wave energy with driving current, there is provided storage
128 logouts are no less than per area, 15 driving current recorder datas can be quickly read by 485 or USB.
4 are internally integrated temperature and humidity controller, and simplified operation mechanism case internal structure saves space about 10%.
The control of 5 logical calculated has inside single-chip microcomputer to be carried out, and can significantly simplify 70% improve production efficiency of external cabling quantity.
6 support USB on-line debuggings can real time inspection include power drive voltage, electric current, dutycycle, temperature, humidity, switch
Location status, heated condition, mode of operation and various input/output state equipment relevant parameter states transfer relevant historical data
(record ripple, logout).
Description of the drawings
Fig. 1 is inventive drive means structure total figure；
Fig. 2 is the Width funtion DC voltage isolated measurement circuit of the single-chip microcomputer connection of the present invention
Fig. 3 is the switching value input circuit of the single-chip microcomputer connection of the present invention；
Fig. 4 is the humiture collection circuit of the single-chip microcomputer connection of the present invention；
Fig. 5 is the driving current detection circuit of the single-chip microcomputer connection of the present invention；
Fig. 6 is the IGBT drive circuit of the single-chip microcomputer connection of the present invention；
Fig. 7 is 485 lightning protection telecommunication circuits of the single-chip microcomputer connection of the present invention；
Fig. 8 is the USB antistatic telecommunication circuits of the single-chip microcomputer connection of the present invention；
Fig. 9 is the relay isolated drive circuit of the single-chip microcomputer connection of the present invention；
In figure：
1st, Width funtion DC voltage isolated measurement circuit 2, switching value isolation Acquisition Circuit 5, single-chip microcomputer 3, temperature humidity are adopted
Collector 4, driving current detection circuit 6, IGBT drive circuit 7, relay isolated drive circuit 8, USB antistatics communication electricity
Road 9,485 lightning protection telecommunication circuits 10, damping resistance 11, difference amplifier 12, common amplifier, 13 linear optical couplings, 14 current-limiting resistances 15,
Indicate diode 16, optocoupler 17, pull-up exclusion 18, filter capacitor 19, Temperature Humidity Sensor 20, from single-chip microcomputer 21, hall sensing
Device 22, proportion resistor 23, IGBT drive optocoupler 24, IGBT 25, fly-wheel diode 26, unidirectional TVS 27, π type filter circuits
28th, 485 isolation communication modules 29, two-way TVS 30, coiling lightning protection resistance 31, three end discharge tubes 32, usb protocol conversion chip
33rd, USB-TVS 34, USB-B types seat 35, Schmidt's not gate 36, NPN triode 37, Schottky diode 38, relay
39th, terminal
Specific embodiment
The SCM Based isolator operating mechanism activation configuration of the present invention is illustrated with reference to accompanying drawing.
The present invention SCM Based isolator operating mechanism activation configuration as shown in figure 1, using single-chip microcomputer as
Total system core, the driver include be connected with single-chip microcomputer 5 successively Width funtion DC voltage isolated measurement circuit 1, open
Pass amount isolation Acquisition Circuit 2, temperature humidity Acquisition Circuit 3, driving current detection circuit 4, IGBT drive circuit 6, relay every
From drive circuit 7, USB antistatics telecommunication circuit 8 and 485 lightning protection telecommunication circuits 9.
The Width funtion DC voltage measuring circuit 1 will be sent after the signal entered after external power source rectified bridge conversion isolation
To single-chip microcomputer 5AD pins, switching value isolation Acquisition Circuit 2 will deliver to single-chip microcomputer 5I/ after external switch amount signal converted isolation
Outside humiture acquired converted signals are delivered to single-chip microcomputer 5, driving current detection circuit 4 by O, temperature humidity Acquisition Circuit 3
Motor drive current is delivered to into single-chip microcomputer 5AD pins Jing after isolation conversion, single-chip microcomputer 5 sends duty cycle signals Jing IGBT and drives electricity
Motor is amplified on road 6, and single-chip microcomputer 5 sends low and high level signal Jing relays isolated drive circuit 7 and amplifies rear-guard motor type relay,
USB antistatics telecommunication circuit 8 will be usb communication signal converted after deliver to 5 communications pins of single-chip microcomputer, 485 lightning protection telecommunication circuit 9 will
485 signals of communication deliver to 5 communications pins of single-chip microcomputer Jing after isolation conversion.
The single-chip microcomputer 5 is STC15W4K32S4 single-chip microcomputers as host scm, and STC15W408AS is used as association's single-chip microcomputer.
What the SCM Based isolator operating mechanism driver functions of the present invention were realized in：
1 internal structure of Width funtion DC voltage isolated measurement circuit of the connection of the single-chip microcomputer 5 is as shown in Fig. 2 drive electricity
Pressure is input into the incoming difference amplifier 11 Jing after damping resistance 10 is decayed by DC+ in Fig. 2 and DC-, is exported to common amplifier 12 after conversion
Export to linear optical coupling 13 and isolated, linear optical coupling opposite side export common amplifier 12 to side of isolation it is converted after export to
5 switched pins VADC of single-chip microcomputer, single-chip microcomputer carry out analog digital conversion and obtain external voltage after calculating being put into internal memory to analogue signal
In it is alternative.
The switching value of the connection of single-chip microcomputer 5 isolates Acquisition Circuit internal structure as shown in figure 3, switching value Jing outside input DIN1
～DIN4 incoming optocouplers 16 Jing after 14 current limliting of current-limiting resistance are exported Jing pull-up exclusions 17 Jing after isolation and are combined into filter capacitor 18
Filter circuit signal is filtered after transmit to single-chip microcomputer 5I/O, single-chip microcomputer 5 can be acquired to outside switching value, switch
Signal input incoming Light-Emitting Diode 15 Jing after current-limiting resistance 14, after external switch signal input, diode 15 is luminous is referred to
Show and can quickly check input state.
The humiture collection circuit inner structure of the connection of single-chip microcomputer 5 is as shown in figure 3, humiture integrative sensor 19SHT10
After the completion of collection data are preserved into internal RAM from 20 timing of single-chip microcomputer is carried out into going to be converted to true temperature humidity, will
Data are transferred to single-chip microcomputer 5 by RX TX, and single-chip microcomputer judges whether to start heating output after carrying out acceptance process.
The driving current detection circuit structure of the connection of single-chip microcomputer 5 is as shown in figure 5, driving current has MOTOR+IN stream such as Hall
Current sensor 21 is flowed out by MOTOR+OUT, and Hall current sensor 21 is exported after changing to current signal to ratio electricity
Resistance 22 is input into export to 5 IADC of single-chip microcomputer after common amplifier 12 carries out voltage follow after carrying out ratio adjustment carries out analog digital conversion
Be calculated true driving current value be put into it is stand-by in internal memory.
The IGBT drive circuit structure of the connection of single-chip microcomputer 5 is as shown in fig. 6, driving voltage drives output by DC+, DC- input
There are MOTOR+, MOTOR- to be connected to motor, single-chip microcomputer 5 is enabled signal and passed through by MOTOREN and PWM inputs with duty cycle signals
IGBT drives optocoupler 23 to carry out isolation drive drive IGBT 24 and is amplified duty cycle signals, by 5 internal algorithm of single-chip microcomputer
Duty cycle signals are adjusted outside equivalent voltage is obtained, due to external connection for motor when IGBT 25 is off
And motor can carry out afterflow by fly-wheel diode 25 under the rotation situation and prevent IGBT 24 from puncturing burning.
485 lightning protection telecommunication circuit internal structures of the connection of single-chip microcomputer 5 are as shown in fig. 7, power input adopts unidirectional TVS 26
Protection, ensures subsequent conditioning circuit safety under the conditions of being opened in front-end circuit isolation breakdown, power supply can be obtained Jing after the filtering of π types filter circuit 27
The steady operation that less ripple ensures 485 isolation modules 28 is obtained, 485 isolation modules 28 are by MCU RX and MCU TX and monolithic
Machine 5 carries out data exchange by Transistor-Transistor Logic level signal isolation and is converted into 485 level differential signals, the two-way TVS pipes 29, lightning protection of Jing around
Line resistance 30, three end discharge tube 31 can shield to surge on 485 holding wires and sensing spike under protecting.
Single-chip microcomputer 5 can carry out fast data exchange with computer by the telecommunication circuits of USB antistatics shown in Fig. 8, can be to reality
When state, the logout of storage inside and recorder data be read out, write configuration can be carried out to driver running parameter.
After the insertion data cable of USB-B types interface 34, holding wire and power supply are entered with usb protocol conversion chip 32 via after USB-TVS 33
Row connection, when there is electrostatic impact, 33 action protection conversion chips of USB-TVS are not breakdown, and usb protocol changes core 32 by USB
Communication Protocol Conversion is processed for data Jing MCU RX, MCU TX are reached single-chip microcomputer 5 after USART, and data are sent out by single-chip microcomputer 5
Computer Jing software processes are reached after delivering to conversion chip process to be shown.
Single-chip microcomputer 5 is driven to relay by relay isolated drive circuit shown in Fig. 9, single-chip microcomputer 5I/O outputs
Drive signal Jing Schmidts 35 shapings of not gate are counter to back-drive optocoupler 16,16 isolation and amplifier drive signal Jing NPN triodes of optocoupler
36 amplification rear-guard motor type relay, 38 coil completes coil drive, and relay contact is connected to terminal 39 and facilitates external linkage, wherein
Coil both sides parallel connection Schottky diode 37 is used as afterflow in order to avoid producing high pressure damage other devices in coil both sides.
The workflow of the SCM Based isolator operating mechanism driver of the present invention：
Into after normal mode of operation, host scm 5 is detected to external input voltage by Fig. 2 circuits, so as to count
Calculate that IGBT 24 drives largest duty cycle value used and to accelerate adjustment interval to be stored in be used in RAM.When using 485 communication
Single-chip microcomputer carries out data exchange with outside 485 equipment by 485 lightning protection telecommunication circuits Fig. 7, now can read current input and output
State, logout, recorder data etc., data are analyzed disconnecting switch health degree can be estimated.When external USB electricity
After cable insertion, single-chip microcomputer can carry out data exchange with exterior PC by the USB antistatic traffic diagrams circuit 8 that single-chip microcomputer connects.Now
Input/output state, logout, recorder data are can read, system time, driver address, driving current protection ginseng is can configure
The whole adjustable parameter such as number, Temperature and Humidity Control threshold value.On-line debugging can be carried out to driver, conveniently be fixed a breakdown.
When driver receives external cable control when division is instructed, 485 Control on Communication, USB debugging controls division instruction
When, host scm carries out whether logical judgment meets drive condition, meets and then enables driving power supply relay and throw over relay,
And produce PWM ripples IGBT 24 be driven, according to the calculated PWM adjusting parameters maximum of external voltage for measuring, plus
Speed interval is adjusted to PWM ripples and then drives IGBT 24 to complete the soft start to motor and controls.In mechanism, running is continuous
Constantly measure external voltage state and driving current size to carry out PWM adjustment and whether carry out excessively stream, overtime protection and incite somebody to action
Current data preserves into RAM to be used.When mechanism run to it is spacing or drive process interrupt when, by recorder data preserve to
In FLASH, and record dependent event.
Claims (2)
1. a kind of SCM Based isolator operating mechanism driver, is characterized in that：The driver include successively with list
Width funtion DC voltage isolated measurement circuit (1) that piece machine (5) connects, switching value isolation Acquisition Circuit (2), temperature humidity collection
Circuit (3), driving current detection circuit (4), IGBT drive circuit (6), relay isolated drive circuit (7), USB antistatics lead to
Letter circuit (8) and 485 lightning protection telecommunication circuits (9)；
The Width funtion DC voltage measuring circuit (1) will be delivered to after the signal entered after external power source rectified bridge conversion isolation
Single-chip microcomputer (5) AD pins, switching value isolation Acquisition Circuit (2) will deliver to single-chip microcomputer after external switch amount signal converted isolation
(5) outside humiture acquired converted signals are delivered to single-chip microcomputer (5), driving current by I/O, temperature humidity Acquisition Circuit (3)
Motor drive current is delivered to single-chip microcomputer (5) AD pins Jing after isolation conversion by detection circuit (4), and single-chip microcomputer (5) sends dutycycle
Signal Jing IGBT drive circuits (6) amplifies motor, and single-chip microcomputer (5) sends low and high level signal Jing relays isolation drive electricity
Road (7) amplify rear-guard motor type relay, USB antistatic telecommunication circuits (8) will be usb communication signal converted after deliver to single-chip microcomputer (5)
485 signals of communication are delivered to single-chip microcomputer (5) communications pins Jing after isolation conversion by communications pins, 485 lightning protection telecommunication circuits (9).
2. SCM Based isolator operating mechanism driver according to claim 1, is characterized in that：Single-chip microcomputer (5)
Be STC15W4K32S4 single-chip microcomputers as host scm, STC15W408AS is used as association's single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202447.2A CN106602961A (en) | 2016-12-23 | 2016-12-23 | Disconnecting switch operating mechanism driver based on single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202447.2A CN106602961A (en) | 2016-12-23 | 2016-12-23 | Disconnecting switch operating mechanism driver based on single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106602961A true CN106602961A (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611202447.2A Pending CN106602961A (en) | 2016-12-23 | 2016-12-23 | Disconnecting switch operating mechanism driver based on single chip microcomputer |
Country Status (1)
| Country | Link |
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| CN (1) | CN106602961A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490991A (en) * | 2017-09-13 | 2017-12-19 | 广西电网有限责任公司电力科学研究院 | A kind of isolator operating mechanism intelligence control system |
| CN109709853A (en) * | 2018-12-28 | 2019-05-03 | 川铁电气（天津）股份有限公司 | A kind of cassette drive array unit based on network switching control station |
| CN110045665A (en) * | 2019-05-27 | 2019-07-23 | 上海格兆电器有限公司 | A kind of control circuit and its working method for D.C. contactor |
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| CN104659759A (en) * | 2015-02-01 | 2015-05-27 | 登高电气有限公司 | Intelligent operating mechanism of high-voltage isolation switch |
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Patent Citations (5)
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| CN202103583U (en) * | 2011-06-24 | 2012-01-04 | 天地（常州）自动化股份有限公司 | Mining explosion-proof and intrinsically safe AC frequency converter |
| CN202374202U (en) * | 2011-11-16 | 2012-08-08 | 川铁电气（天津）集团有限公司 | Electric operating mechanism for controlling circuit through solid state relay |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490991A (en) * | 2017-09-13 | 2017-12-19 | 广西电网有限责任公司电力科学研究院 | A kind of isolator operating mechanism intelligence control system |
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| CN110045665A (en) * | 2019-05-27 | 2019-07-23 | 上海格兆电器有限公司 | A kind of control circuit and its working method for D.C. contactor |
| CN110045665B (en) * | 2019-05-27 | 2024-03-19 | 上海格兆电器有限公司 | Control circuit for direct current contactor and working method thereof |
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Application publication date: 20170426 |
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