CN104538930B - Motor automatic fault detecting system and method - Google Patents
Motor automatic fault detecting system and method Download PDFInfo
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- CN104538930B CN104538930B CN201410693208.6A CN201410693208A CN104538930B CN 104538930 B CN104538930 B CN 104538930B CN 201410693208 A CN201410693208 A CN 201410693208A CN 104538930 B CN104538930 B CN 104538930B
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- power supply
- automatic fault
- motor
- auxiliary winding
- winding binding
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Abstract
The present invention discloses a kind of motor automatic fault detecting system and method.Motor automatic fault detecting system includes motor, master board and power supply relay, motor includes main winding binding post and multiple auxiliary winding binding posts, main winding binding post is connected to one end of power supply by master board, and multiple auxiliary winding binding posts are connected to the other end of power supply by corresponding electronic relay；Motor automatic fault detecting system also includes energization detecting element and control unit, energization detecting element is connected between auxiliary winding binding post and corresponding electronic relay, control unit is used for the signal for receiving energization detecting element, and according to the break-make of the signal control power supply relay received.Using technical scheme; when detecting while have two or more auxiliary winding binding posts while when being powered; motor automatic fault detecting system can automatically cut off power supply, and protection motor will not run and damage under abnormal condition, improve the reliability of air-conditioning system.
Description
Technical field
The present invention relates to the motor device of air-conditioning, in particular to a kind of motor automatic fault detecting system and method.
Background technology
Single-phase capacitance formula multi-tap motor in existing air conditioner generally by electronic relay change each gear around
The break-make of group tap power supply realizes the speed governing of motor, and under normal circumstances, single-phase capacitance formula multi-tap electric machine speed regulation principle is：Electricity
Owner's winding terminals are connected to one end of power line by master control borad, and each auxiliary winding terminal of motor passes through electronic relay respectively
It is connected to the other end of power line.When air conditioner needs high-grade rotating speed, mainboard control relay closure, other relays are in
Off-state, motor main winding and high-grade auxiliary winding are powered, and motor is in high rotating speed running status.Other middle-grades, low grade, surpass
Underdrive operating mode is similar.Air conditioner constantly switches closure and the disconnection of relay, obtains electricity according to the needs of various operating modes
The corresponding rotating speed of machine, to reach the purpose for automatically adjusting speed.
However, existing method has the defects of certain, such as when control logic error or relay failure, can go out
The situation that the existing two or more auxiliary winding of motor are powered simultaneously, and if motor has two or more pairs simultaneously
Winding is powered simultaneously when, electrical fault can be caused or even burnt, and motor does not have automatic protection functions in itself, therefore system is deposited
In certain potential safety hazard, the reliability of air-conditioning system is reduced.
The content of the invention
A kind of motor automatic fault fault detection system and method are provided in the embodiment of the present invention, electricity can be automatically cut off
Source, protection motor will not run and damage under abnormal condition, improve the reliability of air-conditioning system.
In order to solve the above technical problems, a kind of motor automatic fault detecting system of offer of the embodiment of the present invention, including motor,
Master board and power supply relay, the motor include main winding binding post and multiple auxiliary winding binding posts, the master around
Group binding post is connected to one end of power supply by master board, and the multiple auxiliary winding binding post passes through corresponding electricity
Electric relay is connected to the other end of power supply；The motor automatic fault detecting system also includes：Energization detecting element is described logical
Electrical detecting element is connected between the auxiliary winding binding post and the corresponding electronic relay；Control unit, for connecing
The signal of the energization detecting element is received, and according to the break-make of the signal control power supply relay received.
Preferably, the energization detecting element is current sensor.
Preferably, described control unit includes control chip, the control chip is used to receiving and detecting current sense
The signal that device is sent, and export the break-make of corresponding signal control power supply relay.
Preferably, the motor automatic fault detecting system also includes alarm, the alarm is connected to the control
Unit processed.
Another aspect of the present invention, a kind of motor automatic fault detection method is also provided, comprised the following steps：S1. it is real-time
Detect the break-make situation of each auxiliary winding binding post；S2. according to the control of the break-make situation of each auxiliary winding binding post detected
The opening and closing of power supply relay.
Preferably, the step S2 includes：S21：Judge the quantity of current signal being detected simultaneously by；S22：According to inspection
The quantity of the current signal measured, control the break-make of power supply relay.
Preferably, the step S22 includes：S221：When detect current signal quantity be one, judge system just
Often operation；S222：When the quantity for detecting current signal is two or more, system exception is judged, control power supply relay
Device disconnects.
Preferably, the step S22 also includes：S223：While controlling power supply relay to disconnect, alarm is opened
Device.
Apply the technical scheme of the present invention, motor automatic fault detecting system, including motor, master board and power supply relay
Device, motor includes main winding binding post and multiple auxiliary winding binding posts, main winding binding post are connected by master board
To one end of power supply, multiple auxiliary winding binding posts are connected to the other end of power supply by corresponding electronic relay；Electricity
Machine automatic fault detecting system also includes energization detecting element and control unit, and energization detecting element is connected on auxiliary winding terminals
It is sub that control unit is used for the signal for receiving energization detecting element between corresponding electronic relay, and according to the letter received
Number control power supply relay break-make.It is two or more when detecting while having due to using above-mentioned technical scheme
Auxiliary winding binding post is powered simultaneously when, motor automatic fault detecting system can automatically cut off power supply, and protection motor will not be non-
Run and damage under normal circumstances, improve the reliability of air-conditioning system.
Brief description of the drawings
Fig. 1 is the structural representation of the motor automatic fault fault detection system of the embodiment of the present invention.
Description of reference numerals
10th, motor；20th, master board；30th, power supply relay；40th, control unit；50th, alarm；11st, main winding wiring
Terminal；12nd, high-grade auxiliary winding binding post；13rd, middle-grade auxiliary winding binding post；14th, low-grade auxiliary winding binding post；15th, surpass
Low-grade auxiliary winding binding post；16th, high-grade current sensor；17th, middle-grade current sensor；18th, low-grade current sensor；19、
Low-low current sensor；21st, high-grade electronic relay；22nd, middle-grade electronic relay；23rd, low-grade electronic relay；24th, surpass
Low-grade electronic relay.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as the limit to the present invention
It is fixed.
Fig. 1 is the structural representation of the motor automatic fault fault detection system of the embodiment of the present invention.It is as shown in figure 1, electric
Machine automatic fault detecting system, including motor 10, master board 20, power supply relay 30, energization detecting element and control unit
40.Motor 10 includes main winding binding post 11 and multiple auxiliary winding binding posts 12,13,14,15, main winding binding post 11
It is connected to one end of power supply by master board 20, in the embodiment of the present invention, motor 10 is unidirectional condenser multi-tap motor, secondary
Winding connection terminal 12,13,14,15 includes four, respectively high-grade auxiliary winding binding post 12, middle-grade auxiliary winding binding post
13rd, low-grade auxiliary winding binding post 14 and low-low auxiliary winding binding post 15, above-mentioned auxiliary winding binding post 12,13,14,15
Pass through corresponding high-grade electronic relay 21, middle-grade electronic relay 22, low-grade electronic relay 23 and low-low electronics
Relay 24 is connected to the other end of power supply.
It is provided between auxiliary winding binding post 12,13,14,15 and corresponding electronic relay 21,22,23,24 logical
Electrical detecting element, energization detecting element is current sensor 16,17,18,19 in the embodiment of the present invention, including high-grade current sense
Device 16, middle-grade current sensor 17, low-grade current sensor 18 and low-low current sensor 19, for detecting respective lines
Break-make, and send the signal to control unit 40, control unit is according to the break-make of the signal control power supply relay 30 received.
In fact, in a unshowned embodiment, motor 10 can be including two, three, four or even more
Auxiliary winding binding post, however it is not limited to cited four in the embodiment of the present invention.Accordingly, it is corresponding with auxiliary winding binding post
Electronic relay and energization detecting element quantity it is identical with the quantity of auxiliary winding binding post, be also not necessarily limited to listed by the present invention
Four lifted.
Preferably, control unit 40 includes control chip, can select IC chip, and electricity is received and detected using control chip
The signal that flow sensor 16,17,18,19 is sent, and export the break-make of corresponding signal control power supply relay 30.
Using the motor automatic fault fault detection system of the present invention, energization detecting element can detect auxiliary winding in real time and connect
The break-make situation of line terminals 12,13,14,15, and signal is sent to control unit 40, control unit 40 is according to each pair detected
The break-make situation of winding connection terminal 12,13,14,15, control the opening and closing of power supply relay 30.
In the embodiment of the present invention, when one of auxiliary winding binding post is powered, for example, working as high-grade auxiliary winding terminals
When son 12 is powered, electric current is just had by the way that high-grade current sensor 16 sends high level in corresponding high-grade current sensor 16
Signal is input on the control chip of control unit 40, and the quantity of high level signal is detected by control chip, and is exported corresponding
Signal control power supply relay 30 opening and closing.Now, if air-conditioning normal operation, only having a current sensor has high electricity
Flat signal output, i.e., the high level signal that only high-grade current sensor 16 is sent are input in control chip, and control chip connects
A high level signal is received, is judged as system normal operation, power supply relay 30 will not disconnect, and motor 10 can be transported normally
OK.When the logical mistake of master board 20 or the failure of electronic relay 21,22,23,24, cause there are two or two simultaneously
When above electronic relay closes, corresponding current sensor just can all export high level signal to control chip in circuit,
When control chip has been detected simultaneously by two or more high level signal inputs, it is improper that will judge system
Working condition, now control chip can export corresponding signal, deenergization relay 30, ensure system under abnormal condition
It will not run.
Preferably, electric motor automatic detection system also includes alarm 50, and alarm 50 is connected to control unit 40, works as judgement
When system is abnormal operating state, control unit 40 opens alarm 50 while controlling power supply relay 30 to disconnect.
Certainly, above is the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art
For, on the premise of its general principles are not departed from, some improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of motor automatic fault detecting system, including motor (10), master board (20) and power supply relay (30), described
Motor (10) includes main winding binding post (11) and multiple auxiliary winding binding posts (12,13,14,15), and the main winding connects
Line terminals (11) are connected to one end of power supply by master board (20), the multiple auxiliary winding binding post (12,13,14,
15) other end of power supply is connected to by corresponding electronic relay (16,17,18,19)；Characterized in that, the electricity
Machine automatic fault detecting system also includes：
Energization detecting element, the energization detecting element be connected on the auxiliary winding binding post (12,13,14,15) with it is corresponding
The electronic relay (21,22,23,24) between；
Control unit (40), for receiving the signal of the energization detecting element, and according to the signal control power supply received after
The break-make of electrical equipment (30).
2. motor automatic fault detecting system according to claim 1, it is characterised in that the energization detecting element is electricity
Flow sensor (16,17,18,19).
3. motor automatic fault detecting system according to claim 2, it is characterised in that described control unit (40) includes
Control chip, the control chip is used to receiving and detecting the signal that current sensor (16,17,18,19) is sent, and exports phase
The break-make for the signal control power supply relay (30) answered.
4. motor automatic fault detecting system according to claim 1, it is characterised in that the motor automatic fault detection
System also includes alarm (50), and the alarm is connected to described control unit (40).
5. a kind of motor automatic fault detection method, it is characterised in that comprise the following steps：
S1. the break-make situation of each auxiliary winding binding post is detected in real time；
S2. according to the opening and closing of the break-make situation of each auxiliary winding binding post detected control power supply relay.
6. motor automatic fault detection method according to claim 5, it is characterised in that the step S2 includes：
S21：Judge the quantity of current signal being detected simultaneously by；
S22：According to the quantity of the current signal detected, the break-make of power supply relay is controlled.
7. motor automatic fault detection method according to claim 6, it is characterised in that the step S22 includes：
S221：When detect current signal quantity be one, judge system normal operation；
S222：When the quantity for detecting current signal is two or more, system exception is judged, control power supply relay breaks
Open.
8. motor automatic fault detection method according to claim 7, it is characterised in that the step S22 also includes：
S223：While controlling power supply relay to disconnect, alarm is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410693208.6A CN104538930B (en) | 2014-11-25 | 2014-11-25 | Motor automatic fault detecting system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410693208.6A CN104538930B (en) | 2014-11-25 | 2014-11-25 | Motor automatic fault detecting system and method |
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| Publication Number | Publication Date |
|---|---|
| CN104538930A CN104538930A (en) | 2015-04-22 |
| CN104538930B true CN104538930B (en) | 2017-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410693208.6A Active CN104538930B (en) | 2014-11-25 | 2014-11-25 | Motor automatic fault detecting system and method |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123095B (en) * | 2018-10-31 | 2022-09-27 | 佛山市顺德区美的电热电器制造有限公司 | Detection circuit, motor detection method, motor and household appliance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203367994U (en) * | 2013-07-15 | 2013-12-25 | 珠海格力电器股份有限公司 | Single-phase speed-regulation motor protection circuit, single-phase speed-regulation motor and blower fan coil pipe |
| CN103986376A (en) * | 2014-04-09 | 2014-08-13 | 浙江桐庐电机厂 | Multi-gear power source interface circuit of fan coil |
| CN204333925U (en) * | 2014-11-25 | 2015-05-13 | 珠海格力电器股份有限公司 | Motor automatic fault detection system |
-
2014
- 2014-11-25 CN CN201410693208.6A patent/CN104538930B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203367994U (en) * | 2013-07-15 | 2013-12-25 | 珠海格力电器股份有限公司 | Single-phase speed-regulation motor protection circuit, single-phase speed-regulation motor and blower fan coil pipe |
| CN103986376A (en) * | 2014-04-09 | 2014-08-13 | 浙江桐庐电机厂 | Multi-gear power source interface circuit of fan coil |
| CN204333925U (en) * | 2014-11-25 | 2015-05-13 | 珠海格力电器股份有限公司 | Motor automatic fault detection system |
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| Publication number | Publication date |
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| CN104538930A (en) | 2015-04-22 |
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| CB03 | Change of inventor or designer information |
Inventor after: Tan Jianming Inventor after: Wu Chao Inventor after: Chen Sheng Inventor after: Yu Hongtao Inventor after: Li Kaiyou Inventor after: Wen Zijian Inventor before: Liu Wu Inventor before: Wu Chao Inventor before: Chen Sheng Inventor before: Yu Hongtao Inventor before: Li Kaiyou Inventor before: Wen Zijian |
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