CN203490298U - Three-phase power supply phase loss determining and phase sequence detecting device based on multiple microprocessors - Google Patents
Three-phase power supply phase loss determining and phase sequence detecting device based on multiple microprocessors Download PDFInfo
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- CN203490298U CN203490298U CN201320405740.4U CN201320405740U CN203490298U CN 203490298 U CN203490298 U CN 203490298U CN 201320405740 U CN201320405740 U CN 201320405740U CN 203490298 U CN203490298 U CN 203490298U
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Abstract
The utility model relates to a three-phase power supply phase loss determining and phase sequence detecting device based on multiple microprocessors. The device is composed of the following components: a three-phase power supply phase loss determining and phase sequence detecting circuit, a power supply detecting single-chip microcomputer and an electric executing mechanism main single-chip microcomputer. An input power supply finishes voltage reduction and signal conversion of the three-path power supply signal through the three-phase power supply phase loss determining and phase sequence detecting circuit. Three phases of pulse signals are accessed into PCA peripheral ports of the power supply detecting single-chip microcomputer. The power supply detecting single-chip microcomputer transmits the power supply phase loss and phase sequence determining result to the electric executing mechanism main single-chip microcomputer. The three-phase power supply phase loss determining and phase sequence detecting device provided by the utility model realizes phase loss failure determining and phase sequence self-adapting function of the electric executing mechanism, and improves interference resistance and adaptability of the phase loss determining and phase sequence detecting circuit.
Description
Technical field
The utility model relates to a kind of open phases of three-phase power source judgement and detection device for phase sequence based on multimicroprocessor.
Background technology
Electric operator start or the course of work in, power phase shortage can cause motor power hydraulic performance decline or motor not to turn, the more seriously excessive and motor damage of motor short-circuit current directly affects the security of operation of electric system.The correct judgement of power phase, can realize motor phase sequence adaptation function, promotes the intelligent performance of electric operator.
Summary of the invention
The purpose of this utility model is to provide a kind of open-phase fault simple and compact for structure, that realize electric operator to judge and phase sequence self-adaption function, improves phase shortage judgement and the interference free performance of circuit of testing the phase sequence and the open phases of three-phase power source judgement based on multimicroprocessor and detection device for phase sequence and the detection method thereof of applicability.
The technical solution of the utility model is: this device is judged and circuit of testing the phase sequence by open phases of three-phase power source, power supply detects single-chip microcomputer and electric operator host scm forms, the three-phase working power of device is accessed by electric operator external cabling terminal, input power is connected to open phases of three-phase power source judgement and circuit of testing the phase sequence, by open phases of three-phase power source judges and circuit of testing the phase sequence completes three-way power signal step-down and signal, change, form the three synchronous low voltage pulse signals in tunnel, three road pulse signals access respectively through pull-up resistor the PCA peripheral port that power supply detects single-chip microcomputer, power supply detects single-chip microcomputer, by serial port, power phase shortage and phase sequence testing result is sent to electric operator host scm, completes power phase shortage and reports to the police and phase sequence self-adaption function, and control electric operator and complete corresponding operating by host scm.
Described open phases of three-phase power source judgement and circuit of testing the phase sequence detect single-chip microcomputer, resistance, diode and photoelectric coupled circuit components and parts by power supply and form.
Between open phases of three-phase power source judgement and the every two-phase power supply circuit of circuit of testing the phase sequence, by current-limiting resistance, optocoupler and diode, be formed by connecting, for the relevant components and parts of protection hardware circuit, prevent that optocoupler excess current is breakdown, at electric power loop series winding current-limiting resistance, for preventing that optocoupler is reversed over-voltage breakdown, at the electric power loop diode of oppositely contacting, and at optocoupler input end oppositely and connect diode; Each optocoupler circuit of output terminal access pull-up resistor, output square-wave signal.
The utility model has solved open phases of three-phase power source and power phase in electric operator and has changed potential safety hazard and the operation inconvenience bringing, and traditional open phases of three-phase power source testing circuit complex structure, bulky, high in cost of production technical matters, by using two one chip microcomputers, form multimicroprocessor hardware configuration, the mode that adopts software and hardware to combine, realize open-phase fault judgement and the phase sequence self-adaption function of electric operator, improved interference free performance and the applicability of phase shortage judgement and circuit of testing the phase sequence.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model.
Fig. 2 is open phases of three-phase power source judgement and circuit of testing the phase sequence.
Fig. 3 is that power supply detects single-chip microcomputer signal deteching circuit.
Fig. 4 is electric operator host scm operating circuit.
Embodiment
The utility model device detects single-chip microcomputer, program software and electric operator host scm by open phases of three-phase power source judgement and circuit of testing the phase sequence, power supply and forms, main 3 sub-loops of open phases of three-phase power source judgement and circuit of testing the phase sequence form, every loop is comprised of input power, current-limiting resistance, optocoupler and diode, two input ends diode in parallel of optocoupler, to prevent that inverse overvoltage from puncturing optocoupler.The output terminal access pull-up resistor of optocoupler, optocoupler output terminal is exported 3 road power pulse signal WT, VT, UT, every road normal burst signal is to differ the square wave of 120 °, 3 tunnel square-wave signals are connected respectively to power supply and detect 6 of single-chip microcomputer, 8, 10 I/O pins, corresponding P0.1 respectively, P0.2, P0.3, power supply detects the seizure that single-chip microcomputer adopts programmable counter array peripheral hardware, comparing function, and interruption is set, when outside three-phase supply pulse waveform state changes, CPU produces once and interrupts, in interrupt routine, by reading current waveform signal state, the time calculating from last state to current state changes, by program related algorithm, complete phase shortage judgement and judging phase order.
Detection method is as follows:
A. the square-wave signal that power supply detection single-chip microcomputer is inputted mutually to each is constantly carried out state and is read, by the port arrangement of CPU and PCA peripheral hardware are arranged, when the every generation of waveform state once changes, CPU just produces once and interrupts, in interrupt routine, complete from once state to the Time Calculation of current state.According to three-phase supply frequency, can calculate the time that each triphasic wave shape state changes, under normal condition, each waveform state change time of 50Hz power supply is 3.33Ms.If CPU detects each triphasic wave shape state, change time irregular change time, be judged as phase shortage;
B. current waveform state and last waveform state are compared, according to the result of variations of state, the phase sequence of power supply is judged, can customize as forward or backwards;
C. consider external interference, to the time in a given a normal fluctuation range;
D. in order to reduce False Rate, to a, the variation in b requires same variation continuously within two cycles.
The judgement testing result that power supply detection single-chip microcomputer adopts the mode (MODBUS RTC agreement) of serial communication that power supply is detected to single-chip microcomputer is sent in electric operator host scm, by host scm, complete phase sequence self-adaption and open phases of three-phase power source fault alarm function, and control electric operator and carry out corresponding operating.
Claims (2)
1. the open phases of three-phase power source based on multimicroprocessor judges and detection device for phase sequence, it is characterized in that: this device is judged and circuit of testing the phase sequence by open phases of three-phase power source, power supply detects single-chip microcomputer and electric operator host scm forms, the three-phase working power of device is accessed by electric operator external cabling terminal, input power is connected to open phases of three-phase power source judgement and circuit of testing the phase sequence, by open phases of three-phase power source judges and circuit of testing the phase sequence completes three-way power signal step-down and signal, change, form the three synchronous low voltage pulse signals in tunnel, three road pulse signals access respectively through pull-up resistor the PCA peripheral port that power supply detects single-chip microcomputer, power supply detects single-chip microcomputer, by serial port, power phase shortage and phase sequence testing result is sent to electric operator host scm, completes power phase shortage and reports to the police and phase sequence self-adaption function, and control electric operator and complete corresponding operating by host scm.
2. open phases of three-phase power source judgement and the detection device for phase sequence based on multimicroprocessor according to claim 1, is characterized in that: described open phases of three-phase power source judgement and circuit of testing the phase sequence detect single-chip microcomputer, resistance, diode and photoelectric coupled circuit components and parts by power supply and form.
3. the open phases of three-phase power source based on multimicroprocessor according to claim 1 and 2 judges and detection device for phase sequence, it is characterized in that: between open phases of three-phase power source judgement and the every two-phase power supply circuit of circuit of testing the phase sequence, by current-limiting resistance, optocoupler and diode, be formed by connecting, for the relevant components and parts of protection hardware circuit, prevent that optocoupler excess current is breakdown, at electric power loop series winding current-limiting resistance, for preventing that optocoupler is reversed over-voltage breakdown, at the electric power loop diode of oppositely contacting, and at optocoupler input end oppositely and connect diode; Each optocoupler circuit of output terminal access pull-up resistor, output square-wave signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320405740.4U CN203490298U (en) | 2013-07-09 | 2013-07-09 | Three-phase power supply phase loss determining and phase sequence detecting device based on multiple microprocessors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320405740.4U CN203490298U (en) | 2013-07-09 | 2013-07-09 | Three-phase power supply phase loss determining and phase sequence detecting device based on multiple microprocessors |
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| CN203490298U true CN203490298U (en) | 2014-03-19 |
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| CN201320405740.4U Expired - Fee Related CN203490298U (en) | 2013-07-09 | 2013-07-09 | Three-phase power supply phase loss determining and phase sequence detecting device based on multiple microprocessors |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546832A (en) * | 2016-12-08 | 2017-03-29 | 珠海格力电器股份有限公司 | Detection device for three-phase power supply and use method thereof |
| CN106546831A (en) * | 2015-09-18 | 2017-03-29 | 承永资讯科技股份有限公司 | The judging phase order devices and methods therefor of three phase mains |
| CN111665400A (en) * | 2019-03-07 | 2020-09-15 | 丹佛斯（天津）有限公司 | Phase loss detection device, compressor comprising same and phase loss detection method |
| CN111521886B (en) * | 2020-04-28 | 2021-07-16 | 美的集团股份有限公司 | Phase-loss detection circuit and air conditioner |
-
2013
- 2013-07-09 CN CN201320405740.4U patent/CN203490298U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546831A (en) * | 2015-09-18 | 2017-03-29 | 承永资讯科技股份有限公司 | The judging phase order devices and methods therefor of three phase mains |
| CN106546831B (en) * | 2015-09-18 | 2019-09-10 | 承永资讯科技股份有限公司 | The judging phase order devices and methods therefor of three phase mains |
| CN106546832A (en) * | 2016-12-08 | 2017-03-29 | 珠海格力电器股份有限公司 | Detection device for three-phase power supply and use method thereof |
| CN111665400A (en) * | 2019-03-07 | 2020-09-15 | 丹佛斯（天津）有限公司 | Phase loss detection device, compressor comprising same and phase loss detection method |
| CN111521886B (en) * | 2020-04-28 | 2021-07-16 | 美的集团股份有限公司 | Phase-loss detection circuit and air conditioner |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YANGZHOU ELECTRIC POWER EQUIPMENT MANUFACTURE FACT Free format text: FORMER NAME: YANGZHOU ELECTRIC POWER EQUIPMENT REPAIR + MANUFACTURE FACTORY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 225003 Wenchang Middle Road, Jiangsu, China, No. 77, No. Patentee after: Company limited of Yangzhou Electric Power Equipment Repair & Manufacture Factory Address before: 225003 Wenchang Middle Road, Jiangsu, China, No. 77, No. Patentee before: Yangzhou Electric Power Equipment Repair & Manufacture Factory |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20200709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |