CN104538930A - Automatic motor fault detection system and method - Google Patents
Automatic motor fault detection system and method Download PDFInfo
- Publication number
- CN104538930A CN104538930A CN201410693208.6A CN201410693208A CN104538930A CN 104538930 A CN104538930 A CN 104538930A CN 201410693208 A CN201410693208 A CN 201410693208A CN 104538930 A CN104538930 A CN 104538930A
- Authority
- CN
- China
- Prior art keywords
- fault detection
- power supply
- motor
- automatic fault
- binding post
- Prior art date
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title description 5
- 238000004804 winding Methods 0.000 claims abstract description 55
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 238000004378 air conditioning Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Landscapes
- Control Of Electric Motors In General (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a motor automatic fault detection system and a motor automatic fault detection method. The motor automatic fault detection system comprises a motor, a main control panel and a power relay, wherein the motor comprises a main winding wiring terminal and a plurality of auxiliary winding wiring terminals, the main winding wiring terminal is connected to one end of a power supply through the main control panel, and the plurality of auxiliary winding wiring terminals are connected to the other end of the power supply through electronic relays corresponding to the auxiliary winding wiring terminals; the motor automatic fault detection system also comprises an electrifying detection element and a control unit, wherein the electrifying detection element is connected between the secondary winding wiring terminal and the corresponding electronic relay in series, and the control unit is used for receiving the signal of the electrifying detection element and controlling the on-off of the power supply relay according to the received signal. By adopting the technical scheme of the invention, when two or more than two secondary winding wiring terminals are simultaneously electrified, the automatic motor fault detection system can automatically cut off the power supply, thereby protecting the motor from being damaged due to abnormal operation and improving the reliability of the 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 detection system and method.
Background technology
Single-phase capacitance formula many taps motor in existing air conditioner is generally the speed governing that the break-make changing each gear tapping power supply by electronic relay realizes motor, under normal circumstances, single-phase capacitance formula many taps electric machine speed regulation principle is: motor main winding terminal is connected to one end of power line by master control borad, and each auxiliary winding terminal of motor is connected to the other end of power line respectively by electronic relay.When air conditioner needs high-grade rotating speed, mainboard control relay closes, and other relays are in off-state, and motor main winding and the energising of high-grade auxiliary winding, make motor be in high rotating speed running status.Other middle-grade, low-grade, low-low operational modes are similar.Air conditioner is according to the needs of various operating mode, and the closed and disconnection of continuous transfer relay, obtains the corresponding rotating speed of motor, to reach the object of automatic governing speed.
But; there is certain defect in existing method; such as when control logic is made mistakes or relay fault time; there will be the situation that the two or more auxiliary winding of motor is energized simultaneously; if and when motor has two or more auxiliary winding to be energized, electrical fault can be caused even to burn, and motor itself does not have automatic protection functions simultaneously simultaneously; therefore there is certain potential safety hazard in system, reduces the reliability of air-conditioning system.
Summary of the invention
A kind of motor automatic fault fault detection system and method are provided in the embodiment of the present invention, can automatic cut-off power, protection motor can not run and damage under abnormal condition, the reliability of raising air-conditioning system.
For solving the problems of the technologies described above, the embodiment of the present invention provides a kind of motor automatic fault detection system, comprise motor, master board and power supply relay, described motor comprises main winding binding post and multiple auxiliary winding binding post, described main winding binding post is connected to one end of power supply by master board, described multiple auxiliary winding binding post is connected to the other end of power supply by electronic relay corresponding with it; Described motor automatic fault detection system also comprises: energising detecting element, and described energising detecting element is connected between described auxiliary winding binding post and corresponding described electronic relay; Control unit, for receiving the signal of described energising detecting element, and according to the break-make of the signal control power supply relay received.
As preferably, described energising detecting element is current sensor.
As preferably, described control unit comprises control chip, the signal that described control chip sends for receiving and detect current sensor, and exports the break-make of corresponding signal control power supply relay.
As preferably, described motor automatic fault detection system also comprises alarm, and described alarm is connected to described control unit.
Another aspect of the present invention, also provides a kind of motor automatic fault detection method, comprises the following steps: S1. detects the break-make situation of each auxiliary winding binding post in real time; S2. the opening and closing of power supply relay is controlled according to the break-make situation of each auxiliary winding binding post detected.
As preferably, described step S2 comprises: S21: the quantity judging the current signal simultaneously detected; S22: according to the quantity of the current signal detected, controls the break-make of power supply relay.
As preferably, described step S22 comprises: S221: when detecting that the quantity of current signal is one, judgement system is normally run; S222: when detecting that the quantity of current signal is for two or more, judges system exception, controlling power supply relay and disconnecting.
As preferably, described step S22 also comprises: S223: while control power supply relay disconnects, open alarm.
Apply technical scheme of the present invention, motor automatic fault detection system, comprise motor, master board and power supply relay, motor comprises main winding binding post and multiple auxiliary winding binding post, main winding binding post is connected to one end of power supply by master board, and multiple auxiliary winding binding post is connected to the other end of power supply by electronic relay corresponding with it; Motor automatic fault detection system also comprises energising detecting element and control unit, energising detecting element is connected between auxiliary winding binding post and corresponding electronic relay, control unit for receiving the signal of energising detecting element, and according to the break-make of the signal control power supply relay received.Owing to adopting above-mentioned technical scheme; when detect have two or more auxiliary winding binding post to be energized simultaneously simultaneously time; motor automatic fault detection system meeting automatic cut-off power, protection motor can not run and damage under abnormal condition, improves the reliability of air-conditioning system.
Accompanying drawing explanation
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
10, motor; 20, master board; 30, power supply relay; 40, control unit; 50, alarm; 11, main winding binding post; 12, high-grade auxiliary winding binding post; 13, middle-grade auxiliary winding binding post; 14, low-grade auxiliary winding binding post; 15, low-low auxiliary winding binding post; 16, high-grade current sensor; 17, middle-grade current sensor; 18, low-grade current sensor; 19, low-low current sensor; 21, high-grade electronic relay; 22, middle-grade electronic relay; 23, low-grade electronic relay; 24, low-low electronic relay.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Fig. 1 is the structural representation of the motor automatic fault fault detection system of the embodiment of the present invention.As shown in Figure 1, motor automatic fault detection system, comprises motor 10, master board 20, power supply relay 30, energising detecting element and control unit 40.Motor 10 comprises main winding binding post 11 and multiple auxiliary winding binding post 12, 13, 14, 15, main winding binding post 11 is connected to one end of power supply by master board 20, in the embodiment of the present invention, motor 10 is unidirectional condenser many taps motor, auxiliary winding binding post 12, 13, 14, 15 comprise four, be respectively high-grade auxiliary winding binding post 12, middle-grade auxiliary winding binding post 13, 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 by high-grade electronic relay 21 corresponding with it, middle-grade electronic relay 22, low-grade electronic relay 23 and low-low electronic relay 24 are connected to the other end of power supply.
At auxiliary winding binding post 12, between 13,14,15 and the electronic relay 21,22,23,24 of correspondence, be provided with energising detecting element, the detecting element that is energized in the embodiment of the present invention is current sensor 16,17,18,19, comprise high-grade current sensor 16, middle-grade current sensor 17, low-grade current sensor 18 and low-low current sensor 19, for detecting the break-make of respective lines, and signal is sent 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 comprise two, three, four even more auxiliary winding binding posts, is not limited to four cited in the embodiment of the present invention.Accordingly, the electronic relay corresponding with auxiliary winding binding post is identical with the quantity of auxiliary winding binding post with the quantity of the detecting element that is energized, and is also not limited to four cited by the present invention.
Preferably, control unit 40 comprises control chip, can select IC chip, adopts the signal that control chip reception and detection current sensor 16,17,18,19 send, and exports the break-make of corresponding signal control power supply relay 30.
Adopt motor automatic fault fault detection system of the present invention, energising detecting element can detect the break-make situation of auxiliary winding binding post 12,13,14,15 in real time, and send signal to control unit 40, control unit 40, according to the break-make situation of each auxiliary winding binding post 12,13,14,15 detected, controls the opening and closing of power supply relay 30.
In the embodiment of the present invention, when one of them auxiliary winding binding post is energized, such as, when high-grade auxiliary winding binding post 12 is energized, just have electric current in corresponding high-grade current sensor 16 to pass through, high-grade current sensor 16 sends high level signal and is input on the control chip of control unit 40, is detected the quantity of high level signal, and export the opening and closing of corresponding signal control power supply relay 30 by control chip.Now, if air-conditioning normally runs, only having a current sensor has high level signal to export, namely the high level signal only having high-grade current sensor 16 to send is input in control chip, control chip receives a high level signal, be judged as that system is normally run, power supply relay 30 can not disconnect, and motor 10 can normally run.When master board 20 logical mistake or electronic relay 21,22,23,24 break down, when causing having two or more electronic relays to close simultaneously, current sensor corresponding in circuit just all can export high level signal to control chip, when control chip has detected that two or more high level signal inputs simultaneously, system of will judging is abnormal operating state, now control chip can export corresponding signal, deenergization relay 30, guarantee system can not be run under abnormal condition.
Preferably, electric motor automatic detection system also comprises alarm 50, and alarm 50 is connected to control unit 40, and when judgement system is abnormal operating state, control unit 40, while control power supply relay 30 disconnects, opens alarm 50.
Certainly, be more than the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art, under the prerequisite not departing from its general principles, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (8)
1. a motor automatic fault detection system, comprise motor (10), master board (20) and power supply relay (30), described motor (10) comprises main winding binding post (11) and multiple auxiliary winding binding post (12,13,14,15), described main winding binding post (11) is connected to one end of power supply by master board (20), described multiple auxiliary winding binding post (12,13,14,15) is connected to the other end of power supply by electronic relay (16,17,18,19) corresponding with it; It is characterized in that, described motor automatic fault detection system also comprises:
Energising detecting element, described energising detecting element is connected between described auxiliary winding binding post (12,13,14,15) with corresponding described electronic relay (21,22,23,24);
Control unit (40), for receiving the signal of described energising detecting element, and according to the break-make of the signal control power supply relay (30) received.
2. motor automatic fault detection system according to claim 1, is characterized in that, described energising detecting element is current sensor (16,17,18,19).
3. motor automatic fault detection system according to claim 2, it is characterized in that, described control unit (40) comprises control chip, described control chip is used for the signal received and detection current sensor (16,17,18,19) sends, and exports the break-make of corresponding signal control power supply relay (30).
4. motor automatic fault detection system according to claim 1, is characterized in that, described motor automatic fault detection system also comprises alarm (50), and described alarm is connected to described control unit (40).
5. a motor automatic fault detection method, is characterized in that, comprises the following steps:
S1. the break-make situation of each auxiliary winding binding post is detected in real time;
S2. the opening and closing of power supply relay is controlled according to the break-make situation of each auxiliary winding binding post detected.
6. motor automatic fault detection method according to claim 5, it is characterized in that, described step S2 comprises:
S21: the quantity judging the current signal simultaneously detected;
S22: according to the quantity of the current signal detected, controls the break-make of power supply relay.
7. motor automatic fault detection method according to claim 6, it is characterized in that, described step S22 comprises:
S221: when detecting that the quantity of current signal is one, judgement system is normally run;
S222: when detecting that the quantity of current signal is for two or more, judges system exception, controlling power supply relay and disconnecting.
8. motor automatic fault detection method according to claim 7, it is characterized in that, described step S22 also comprises:
S223: while control power supply relay disconnects, open alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410693208.6A CN104538930B (en) | 2014-11-25 | 2014-11-25 | Automatic motor fault detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410693208.6A CN104538930B (en) | 2014-11-25 | 2014-11-25 | Automatic motor fault detection system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104538930A true CN104538930A (en) | 2015-04-22 |
| CN104538930B CN104538930B (en) | 2017-11-10 |
Family
ID=52854422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410693208.6A Active CN104538930B (en) | 2014-11-25 | 2014-11-25 | Automatic motor fault detection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104538930B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123095A (en) * | 2018-10-31 | 2020-05-08 | 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 regulating motor protection circuit, single-phase speed regulating motor and fan coil |
| 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 | Automatic fault detection system for motor |
-
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 regulating motor protection circuit, single-phase speed regulating motor and fan coil |
| 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 | Automatic fault detection system for motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123095A (en) * | 2018-10-31 | 2020-05-08 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104538930B (en) | 2017-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100374961C (en) | Safety controller and system using same | |
| US8054014B2 (en) | Control system for an electrical machine | |
| CN101099414B (en) | Device for the controlled switching of a lamp, use of the device and corresponding operating method | |
| CN103277871B (en) | Outdoor fan of air-conditioner speed-regulating control device | |
| CN1312816C (en) | Power distribution unit, installation including this power distribution and electric protection method | |
| CN105372549A (en) | High-voltage load short circuit detection system and method | |
| CN204333925U (en) | Automatic fault detection system for motor | |
| US20150348728A1 (en) | Method of redundant monitoring and protection of ac power generation channels | |
| CN105116274A (en) | Wiring detection device, three-phase power supply equipment and wiring detection method | |
| CN202483338U (en) | Power window system based on control of BCM (body control module) | |
| CN207039447U (en) | Fault detection circuit | |
| CN104538930A (en) | Automatic motor fault detection system and method | |
| WO2020115630A1 (en) | Dahlander electromotor startup module | |
| CN109193915B (en) | Switch machine control circuit, system, control method and fault detection method | |
| CN104076209B (en) | Motor detection device | |
| CN204028321U (en) | Motor detection device | |
| CN103607824B (en) | A kind of controlling apparatus for indicator lamp and system | |
| CN205080418U (en) | Strong oil circulation forced air cooling of transformer is intelligent control device but | |
| CN108879607B (en) | Anti-adhesion control device and control method for contactor | |
| KR20190104506A (en) | Power transfer control method using automatic power transfer control device with load short detection function | |
| EP2430501B1 (en) | System and method of communication for electronic apparatuses | |
| CN110556787A (en) | motor protection circuit and protection control method | |
| CN204440088U (en) | Output switch parameter self-protection circuit | |
| KR100765168B1 (en) | Apparatus for protecting incorrect connection of multi-system air-conditioner and method of controlling the same | |
| CN111525494B (en) | Drive control circuit, control method, device, compressor, air conditioner and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |