CN105337259B - A kind of motor rotation blockage guard method and device - Google Patents
A kind of motor rotation blockage guard method and device Download PDFInfo
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- CN105337259B CN105337259B CN201510822783.6A CN201510822783A CN105337259B CN 105337259 B CN105337259 B CN 105337259B CN 201510822783 A CN201510822783 A CN 201510822783A CN 105337259 B CN105337259 B CN 105337259B
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Abstract
The invention discloses a kind of motor rotation blockage guard method and devices, belong to motor control technology field, do not have special rotation-clogging protection function to solve existing electrical equipment, there is the problems such as machinery is stuck, the hidden danger of motor damage in the process of running and design.Motor rotation blockage guard method provided by the invention, the reference oscillation waveform under motor normal work gathered in advance is stored by memory module, the real-time vibrational waveform of the motor is acquired by vibrating sensor, the real-time vibrational waveform of the motor is compared by control module with the reference oscillation waveform under the normal work of the motor, if the difference between the two is more than preset value, then the control module sends out protection signal, fast response time, control is accurate, motor can be protected in time, prevent motor stuck because of caused by mechanical breakdown, vibration, situations such as abrasion is abnormal.The present invention also provides a kind of motor rotation blockage protective devices.
Description
Technical field
The present invention relates to motor control technology field more particularly to a kind of motor rotation blockage guard methods and motor rotation blockage to protect
Device.
Background technology
With the continuous development of motor insulation material, present insulated aging life-span is long, therefore motor is normally being transported
There is higher reliability in the case of turning.But motor is in use, can still have burning machine situation, sum up, mainly
Due to following two aspect：The first is electrical aspect reason, including electric voltage exception, phase shortage, overload etc.；Second is machinery
Reason, stall caused by mainly various machineries are stuck.
So, for the first situation, there is overcurrent protection in electrical design at present, lack anti-phase protection, overheating protection etc.
Deng.For the second situation, motor rotation blockage may result in high current, and temperature increases, although overcurrent protection and temperature protection also may be used
To play a role to this, still, overcurrent protection is for short circuit originally, and only motor rotation blockage meeting is increased with electric current,
So just subsidiary protective effect, although moreover, motor rotation blockage electric current can increase, the size of curent change still has larger
Difference, often the use habit of people is to like that overcurrent protection value is turned up, and often filters out rotation-clogging protection in this process
Effect, so, overcurrent protection is not rotation-clogging protection truly；In addition, temperature protection has hysteresis, often also not
Stall can be protected abnormal in time.
In short, electrical equipment does not have the function of special rotation-clogging protection substantially at present, when equipment in the process of running can
There is the hidden danger that machinery is stuck, and motor is damaged.
Invention content
An object of the present invention is to provide a kind of fast response time, control accurately motor rotation blockage guard methods, prevent
Only because mechanical breakdown leads to motor damage；
It is another object of the present invention to propose one kind simple in structure, fast response time, control accurately motor rotation blockage
Protective device prevents from leading to motor damage because of mechanical breakdown.
For this purpose, on the one hand, the following technical solutions are proposed by the present invention：
A kind of motor rotation blockage guard method stores the benchmark under motor normal work gathered in advance by memory module and shakes
Dynamic waveform, acquires the real-time vibrational waveform of the motor by vibrating sensor, and control module is by the real-time vibration of the motor
Waveform is compared with the reference oscillation waveform under the normal work of the motor, if the difference between the two is more than preset value,
Then the control module sends out protection signal.
Further, this approach includes the following steps：
Step A, the reference oscillation waveform under the motor normal work gathered in advance is stored by the memory module,
The reference oscillation waveform includes starting reference oscillation waveform and operation reference oscillation waveform, and the startup reference oscillation waveform is
The reference oscillation waveform that the motor detects when normally starting；The operation reference oscillation waveform is the motor normal operation
Under reference oscillation waveform；
Step B, the real-time vibrational waveform in the case of the electric motor starting is acquired；
Step C, the described control module by the real-time vibrational waveform acquired in step B and the startup reference oscillation waveform into
Row compares, and judges whether the difference between the two is more than predetermined value, if it is not, then D is entered step, if it is, entering step G；
Step D：Motor enters operating status；
Step G：Control module sends out protection signal.
Further, in step C, the real-time vibrational waveform in the case of the electric motor starting and the startup reference oscillation
Difference between waveform includes the case where vibrating sensor does not collect real-time vibrational waveform more than predetermined value.
Further, this method is further comprising the steps of after step D：
Step E, the described vibrating sensor acquires the real-time vibrational waveform in the case of the motor operation；
Step F, the described control module shakes the real-time vibrational waveform in the case of the motor operation with the operation benchmark
Dynamic waveform is compared, and judges whether the difference between the two is more than predetermined value, if it is, G is entered step, if it is not, then returning
Return step E.
Further, the reference oscillation waveform and real-time vibrational waveform are by mounted on motor rear and front end
Vibrating sensor on bearing chamber or bearing cap is acquired.
Further, the protection signal that the control module is sent out includes controlling the power switch closing of the motor.
On the other hand, the following technical solutions are proposed by the present invention：
A kind of motor rotation blockage protective device, including control module, vibrating sensor and memory module, the vibration module and
The memory module is communicated with the control module and is connected；The vibrating sensor is used to acquire the real-time vibration wave of motor
Shape；The memory module is used to store the reference oscillation waveform under the motor normal work gathered in advance；The control mould
Reference oscillation waveform under block is used to work normally the real-time vibrational waveform of the motor with motor is compared, and in the two
Between difference be more than preset value when send out protection signal.
Further, the vibrating sensor is set on the bearing chamber or bearing cap of the rear and front end of the motor.
Further, the control module and the power switch communication of the motor connect.
Further, further include at least one of alarm whistle and alarm lamp, the control module and the alarm
The communication connection of the switch of whistle and the alarm lamp.
Beneficial effects of the present invention are：
Motor rotation blockage guard method provided by the invention acquires the real-time vibrational waveform of motor, control by vibrating sensor
The advance acquisition that molding block will store in the real-time vibrational waveform for the motor that the vibrating sensor acquires and memory module
The lower reference oscillation waveform of motor normal work be compared, if the real-time vibrational waveform exception of the motor,
The control module sends out protection signal, and fast response time, control are accurate, can protect motor in time, prevent motor because of machinery therefore
Situations such as stuck caused by barrier, vibration, abnormal abrasion, solve the problems, such as that temperature protection mode lags.
Motor rotation blockage protective device provided by the invention is simple in structure, fast response time, controls precisely, effectively prevents
The motor damage caused by mechanical breakdown.
Description of the drawings
Fig. 1 is the structural schematic diagram for the motor rotation blockage protective device that the embodiment of the present invention provides；
Fig. 2 is one of the flow chart for the motor rotation blockage guard method that the embodiment of the present invention provides；
Fig. 3 is the two of the flow chart for the motor rotation blockage guard method that the embodiment of the present invention provides.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
Embodiment：
A kind of motor rotation blockage protective device is present embodiments provided, as shown in Figure 1 comprising control module, vibrating sensing
Device and memory module, vibration module and memory module are communicated with control module and are connected；Vibrating sensor is for acquiring motor
Real-time vibrational waveform；Memory module is used to store the reference oscillation waveform under motor normal work gathered in advance；Control module
It is compared for the reference oscillation waveform under working normally the real-time vibrational waveform of motor with motor, and the difference between the two
Value sends out protection signal when being more than preset value.
As more specific embodiment, vibrating sensor is set to the bearing chamber of the rear and front end of motor.
As further embodiment, the power switch communication connection of control module and motor；In addition, the device
Can also include alarm whistle and alarm lamp, control module and the switch communication of alarm whistle and alarm lamp connect, also may be used certainly
It is not provided with alarm whistle and alarm lamp or either-or setting with selection.
The present invention also provides a kind of motor rotation blockage guard methods, as shown in Fig. 2, being stored by memory module in this method
Reference oscillation waveform under motor normal work gathered in advance, the real-time vibration wave of the motor is acquired by vibrating sensor
Shape, control module compare the real-time vibrational waveform of the motor and the reference oscillation waveform under the normal work of the motor
Compared with if the difference between the two is more than preset value, the control module sends out protection signal.
In the present embodiment, the real-time vibrational waveform of motor is acquired by vibrating sensor to judge that motor oscillating whether there is
Abnormal, fast response time, control are accurate, can protect motor in time, prevent motor stuck because of caused by mechanical breakdown, vibration,
Situations such as abrasion is abnormal, solves the problems, such as that temperature protection mode lags.
More specifically, as shown in figure 3, this approach includes the following steps：
Step A, the reference oscillation waveform under the motor normal work gathered in advance is stored by the memory module,
The reference oscillation waveform includes starting reference oscillation waveform and operation reference oscillation waveform, and the startup reference oscillation waveform is
The reference oscillation waveform that the motor detects when normally starting；The operation reference oscillation waveform is the motor normal operation
Under reference oscillation waveform；
Step B, the real-time vibrational waveform in the case of the electric motor starting is acquired；
Step C, the described control module by the real-time vibrational waveform acquired in step B and the startup reference oscillation waveform into
Row compares, and judges whether the difference between the two is more than predetermined value, if it is not, then D is entered step, if it is, entering step G；
Step D：Motor enters operating status；
Step G：Control module sends out protection signal.
Further, in step C, the real-time vibrational waveform in the case of the electric motor starting and the startup reference oscillation
Difference between waveform includes the case where vibrating sensor does not collect real-time vibrational waveform more than predetermined value.
The debugging stage before motor comes into operation can acquire the vibrational waveform letter in the case of two kinds of electric motor starting and operation
Number be used as reference oscillation waveform.If stall occurs in start-up course or stall will occur for motor, generally can be due to stall
Can not normal rotation, vibrating sensor detection at this time do not acquire or collects shaking in real time in the case of very faint electric motor starting
Dynamic waveform, therefore, control module send out protection signal according to comparison result, execute protection act, which can be straight
The power switch for connecing control motor is closed, and to prevent motor fret, can also start alarm whistle and flicker alarm lamp simultaneously, with
Staff is reminded to handle.
In the above method, if motor normally starts, into operating status, then this method enters following step：
Step E, the described vibrating sensor acquires the real-time vibrational waveform in the case of the motor operation；
Step F, the described control module shakes the real-time vibrational waveform in the case of the motor operation with the operation benchmark
Dynamic waveform is compared, and judges whether the difference between the two is more than predetermined value, if it is, G is entered step, if it is not, then returning
Return step E.
Further, said reference vibrational waveform and real-time vibrational waveform are by mounted on motor rear and front end
Vibrating sensor on bearing chamber is acquired.
After motor enters the operation phase, real-time vibrational waveform and reference oscillation wave that control module detects vibrating sensor
Shape is compared, if stall occurs for motor in operational process, is vibrated and is necessarily mutated, at this point, control module then feedback letter
Number execute protection act.
In addition, vibrating sensor is selectively also set to motor in motor rotation blockage protective device in the present embodiment
On the bearing cap of rear and front end, correspondingly, in motor rotation blockage guard method, reference oscillation waveform and real-time vibrational waveform also may be used
Being acquired by the vibrating sensor on the bearing cap of motor rear and front end.
Motor rotation blockage guard method fast response time provided in this embodiment, control are accurate, can protect motor in time, prevent
Motor is stuck because of caused by mechanical breakdown, vibration, wears situations such as abnormal, solves the problems, such as that temperature protection mode lags.
Motor rotation blockage protective device provided in this embodiment is simple in structure, fast response time, controls precisely, is effectively prevented
Caused by mechanical breakdown motor damage.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and it cannot be construed to limiting the scope of the invention in any way.Based on the explanation herein, the technology of this field
Personnel would not require any inventive effort the other specific implementation modes that can associate the present invention, these modes are fallen within
Within protection scope of the present invention.
Claims (9)
1. a kind of motor rotation blockage guard method, which is characterized in that store motor gathered in advance by memory module and work normally
Under reference oscillation waveform, acquire the real-time vibrational waveform of the motor by vibrating sensor, control module is by the motor
Real-time vibrational waveform be compared with the reference oscillation waveform under the normal work of the motor, if the difference between the two is super
Preset value is crossed, then the control module sends out protection signal；
Wherein, include the following steps：
Step A, the reference oscillation waveform under the motor normal work gathered in advance is stored by the memory module, it is described
Reference oscillation waveform includes starting reference oscillation waveform and operation reference oscillation waveform, and the startup reference oscillation waveform is described
The reference oscillation waveform detected when motor normally starts；The operation reference oscillation waveform is under the motor normal operation
Reference oscillation waveform；
Step B, the real-time vibrational waveform in the case of the electric motor starting is acquired；
Step C, the described control module compares the real-time vibrational waveform acquired in step B and the startup reference oscillation waveform
Compared with judging whether difference between the two is more than predetermined value, if it is not, then D is entered step, if it is, entering step G；
Step D：Motor enters operating status；
Step G：Control module sends out protection signal.
2. a kind of motor rotation blockage guard method according to claim 1, which is characterized in that in step C,
Real-time vibrational waveform and the difference started between reference oscillation waveform in the case of the electric motor starting are more than predetermined value
Not the case where real-time vibrational waveform not being collected including the vibrating sensor.
3. a kind of motor rotation blockage guard method according to claim 1, which is characterized in that after step D further include following
Step：
Step E, the described vibrating sensor acquires the real-time vibrational waveform in the case of the motor operation；
Step F, the described control module is by real-time vibrational waveform and the operation reference oscillation wave in the case of the motor operation
Shape is compared, and judges whether the difference between the two is more than predetermined value, if it is, G is entered step, if it is not, then returning to step
Rapid E.
4. a kind of motor rotation blockage guard method according to any one of claims 1 to 3, which is characterized in that the reference oscillation
Waveform and real-time vibrational waveform be by the vibrating sensor on the bearing chamber or bearing cap of motor rear and front end into
Row acquisition.
5. a kind of motor rotation blockage guard method according to any one of claims 1 to 3, which is characterized in that the control module
The protection signal sent out includes controlling the power switch closing of the motor.
6. a kind of motor rotation blockage protective device, which is characterized in that such as 1~5 any one of them motor rotation blockage guard method is used,
The motor rotation blockage protective device includes control module, vibrating sensor and memory module, the vibrating sensor and described is deposited
It stores up module and communicates connection with the control module；
The vibrating sensor is used to acquire the real-time vibrational waveform of motor；
The memory module is used to store the reference oscillation waveform under the motor normal work gathered in advance；
The control module be used for by the real-time vibrational waveform of the motor and motor normal work under reference oscillation waveform into
Row compare, and the difference between the two be more than preset value when send out protection signal.
7. a kind of motor rotation blockage protective device according to claim 6, which is characterized in that the vibrating sensor is set to
On the bearing chamber or bearing cap of the rear and front end of the motor.
8. a kind of motor rotation blockage protective device described according to claim 6 or 7, which is characterized in that the control module and institute
State the power switch communication connection of motor.
9. a kind of motor rotation blockage protective device described according to claim 6 or 7, which is characterized in that further include alarm whistle and
At least one of alarm lamp, the control module and the switch communication of the alarm whistle and the alarm lamp connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510822783.6A CN105337259B (en) | 2015-11-24 | 2015-11-24 | A kind of motor rotation blockage guard method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510822783.6A CN105337259B (en) | 2015-11-24 | 2015-11-24 | A kind of motor rotation blockage guard method and device |
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| CN105337259A CN105337259A (en) | 2016-02-17 |
| CN105337259B true CN105337259B (en) | 2018-09-07 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765177B (en) * | 2016-08-15 | 2020-06-09 | 珠海格力电器股份有限公司 | Method and device for detecting running state of permanent magnet synchronous motor |
| CN108061854B (en) * | 2016-11-08 | 2024-02-13 | 广州奥睿智能科技有限公司 | Steering engine locked rotor detection method and detection device |
| CN106602266B (en) * | 2016-12-14 | 2019-11-12 | 深圳日海通讯技术股份有限公司 | A kind of electricity tune method and device of mobile communication intelligent antenna |
| CN108242908B (en) * | 2016-12-23 | 2020-03-24 | 宝沃汽车（中国）有限公司 | Motor locked-rotor protection control method and device for electric vehicle and electric vehicle |
| CN107065720A (en) * | 2017-04-20 | 2017-08-18 | 哈尔滨理工大学 | Intelligent electric machine failure wave-recording early warning system |
| CN109656156A (en) * | 2017-10-12 | 2019-04-19 | 苏州宝时得电动工具有限公司 | Electric tool starts control method and device |
| CN110031757B (en) * | 2019-03-22 | 2020-08-07 | 中国地质大学（武汉） | Method for rapidly detecting locked rotor of motor closed-loop system |
| CN109884385A (en) * | 2019-04-09 | 2019-06-14 | 上海汇像信息技术有限公司 | Contactless voltage detecting sensor |
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| CN103888322A (en) * | 2014-04-15 | 2014-06-25 | 重庆贻科科技有限公司 | Monitoring method and monitoring system of motor |
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| CN201550076U (en) * | 2009-11-05 | 2010-08-11 | 王桂林 | Intelligent alternating electromagnetic induction motor control protector |
| JP5725833B2 (en) * | 2010-01-04 | 2015-05-27 | Ntn株式会社 | Rolling bearing abnormality diagnosis device, wind power generation device and abnormality diagnosis system |
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| JP6196093B2 (en) * | 2012-12-25 | 2017-09-13 | Ntn株式会社 | Vibration analysis method for bearing device, vibration analysis device for bearing device, and state monitoring device for rolling bearing |
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| CN2686178Y (en) * | 2004-02-24 | 2005-03-16 | 张建兴 | Electrocar block power-off protection circuit |
| CN103888322A (en) * | 2014-04-15 | 2014-06-25 | 重庆贻科科技有限公司 | Monitoring method and monitoring system of motor |
| CN104346528A (en) * | 2014-10-22 | 2015-02-11 | 中国电子科技集团公司第四十一研究所 | Effective vibration data interception method based on waveform characteristic statistics |
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