CN104236746B - Device for monitoring temperature and monitoring method for motor - Google Patents
Device for monitoring temperature and monitoring method for motor Download PDFInfo
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- CN104236746B CN104236746B CN201410473436.2A CN201410473436A CN104236746B CN 104236746 B CN104236746 B CN 104236746B CN 201410473436 A CN201410473436 A CN 201410473436A CN 104236746 B CN104236746 B CN 104236746B
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Abstract
Present invention is disclosed a kind of device for monitoring temperature for motor and monitoring method, at motor, temperature sensor is all set with being installed in the encoder of motor external shell, with in induction motor, the change of external temperature, and in utilizing, temperature difference produced by external temperature monitors the working condition of two induction apparatuss, make motor can operate under the temperature range of safety, reach to protect the function of motor, avoid motor burnout, the life-span that motor uses can be effectively increased, and protect motor that good high power can be maintained at normal working temperature to export, and temperature sensor is carried out signal transmission by single transmission line, dispensing efficiency can be promoted and reduce distribution cost.
Description
Technical field
The present invention relates to a kind of device for monitoring temperature for motor and monitoring method.
Background technology
Though the internal temperature sensor that is equiped with of general motor, but when motor has produced the phenomenon of high temperature the most, and often motor is because of the too high damage of temperature, related burn motor other part internal.
Therefore; have in the monitoring system of motor temperature protection mechanism at present; burn in order to avoid motor inside is caused because temperature is too high; generally temperature sensor detect motor temperature exceed a certain temperature spot time; can carry out cutting off output and allowing motor decommission; avoid motor to damage and perform defencive function; but after motor shuts down; user has to wait for again just can again operating after motor temperature drops to a certain design temperature point, so can cause the inconvenience that user operates.
On the other hand; the most also there is the temperature warning device of a kind of motor; but alarming device is only at motor external connection buzzer or speaker etc.; when temperature sensor senses that motor temperature exceedes a certain temperature spot; sound is utilized to reach to warn function; but the volume of general work place machine operation often can be more than buzzer volume; if therefore can be excessive because of the volume of mechanical movement after buzzer or speaker start; make staff cannot hear the sound that buzzer or speaker send, cause cannot discovering the overheated phenomenon of motor immediately and causing motor to damage.
But, if the temperature sensor within motor damages, whether cannot exceed a certain temperature spot by normal detection motor temperature, even if motor is provided with the functions such as jerk protection or temperature warning, also cannot sense the phenomenon that motor is overheated.
Summary of the invention
It is an object of the invention to the deficiency overcoming prior art to exist, it is provided that a kind of device for monitoring temperature for motor and monitoring method, make motor operate under the temperature range of safety, it is to avoid motor burnout.
The purpose of the present invention is achieved through the following technical solutions:
A kind of device for monitoring temperature for motor, including
Driver, has a temperature monitoring unit, and produces a driving signal in order to control and to drive motor running；
Encoder, it is installed on the external shell of motor, has a processing unit, and described feedback signal is also back to driver by the feedback signal that exported during in order to read motor running；
First temperature sensor, is arranged in motor, in order to detect the variations in temperature within motor, to produce the first temperature signal；
Second temperature sensor, is arranged in encoder and is attached at the external shell of motor, in order to detect the variations in temperature of the external shell of motor, to produce the second temperature signal；And
First transmission line, for concatenating described first temperature sensor and encoder, in order to be sent in encoder by described first temperature signal；
Second transmission line, for concatenating described second temperature sensor and encoder, in order to be sent in encoder by described second temperature signal；
The processing unit of described encoder is integrated the first temperature signal and the second temperature signal and is exported the 3rd temperature signal, 3rd temperature signal is sent in the temperature monitoring unit of described driver by the 3rd transmission line, makes the internal variations in temperature with external shell of temperature monitoring unit monitoring motor.
Preferably, described temperature monitoring unit also comprises a temperature sensor abnormality alarm device and a motor overtemperature warning system, described temperature sensor abnormality alarm device system in order to indicate the first temperature sensor and the working condition of the second temperature sensor, described motor overtemperature warning system in order to indicate motor by thermal conditions.
Preferably, described first temperature sensor and the second temperature sensor are critesistor, thermal diode or thermocouple.
Preferably, described first temperature signal is sent in the processing unit of described encoder by described first temperature sensor by described first transmission line；Described second temperature signal is sent in the processing unit of described encoder by described second temperature sensor by described second transmission line.
Preferably, described feedback signal includes the position of described motor, velocity and acceleration.
Preferably, described first transmission line, the second transmission line, the 3rd transmission line are same transmission line.
Present invention further teaches a kind of monitoring method according to the above-mentioned device for monitoring temperature for motor, comprise the steps:
S1, by the first temperature sensor and the second temperature sensor monitoring motor respectively internal and external temperature, and respectively will be in the first temperature signal of monitoring gained and the processing unit of the second temperature signal transmission extremely described encoder by the first transmission line and the second transmission line；
S2, the processing unit of described encoder are integrated the first temperature signal and the second temperature signal and are exported the 3rd temperature signal, in temperature monitoring unit by the 3rd transmission line to described driver, the change of the temperature that temperature monitoring unit monitoring motor is internal with outside；
S3, described temperature monitoring unit judge whether the temperature difference of first, second temperature sensor exceedes the temperature range of normal specification；
S4, when the temperature difference of described first temperature sensor and the second temperature sensor exceedes the temperature range of normal specification, the temperature sensor abnormality alarm device in described temperature monitoring unit sends abnormality alarm message；
S5, when the temperature difference of described first temperature sensor and the second temperature sensor is in the temperature range of normal specification, described temperature monitoring unit judges that motor is the most overheated；
S6, have gone up over proof temperature range when the internal temperature of described first the sensed motor of temperature sensor, or when the external shell temperature of the second sensed motor of temperature sensor has gone up and exceedes rated temperature range, described motor overtemperature warning system sends alert message；
S7, after described motor overtemperature warning system sends alert message; described driver exports an interruption signal and exceedes overtemperature protection scope in order to start motor safe jerk protection mechanism when motor temperature, will start a safe jerk protection mechanism in order to stop the operating of motor；
S8, when described first temperature sensor and the sensed temperature of the second temperature sensor are not yet increased beyond preset temperature range, and described motor normally works.
The beneficial effects are mainly as follows:
By all arranging temperature sensor at motor with being installed in the encoder of motor external shell, with in induction motor, the change of external temperature, and in utilizing, temperature difference produced by external temperature monitors the working condition of two induction apparatuss, motor can be operated under the temperature range of safety, reach to protect the function of motor, avoid motor burnout, the life-span that motor uses can be effectively increased, and protect motor that good high power can be maintained at normal working temperature to export, and temperature sensor is carried out signal transmission by single transmission line, dispensing efficiency can be promoted and reduce distribution cost.
Hereinafter accompanying drawing the most in conjunction with the embodiments, is described in further detail the detailed description of the invention of the present invention, so that technical solution of the present invention is more readily understood, grasps.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings technical solution of the present invention is described further:
Fig. 1: the structural representation of device for monitoring temperature of the present invention；
Fig. 2: the schematic flow sheet of temperature monitoring method of the present invention.
Detailed description of the invention
As it is shown in figure 1, the device for monitoring temperature 1 for motor includes: a driver 10, receive the input current 121 of power supply 12 and produce a driving signal 103, in order to control and to drive its motor 14 to operate, there is in it temperature monitoring unit 101；One encoder 16, it is installed on the external shell of motor 14, has a processing unit 161, in order to read the feedback signal 162 exported when motor 14 operates, and feedback signal 162 is back to driver 10；Therefore, motor 14 can be driven to operate after driver 10 starts because of power supply 12, and encoder 16 can sense the feedback signal 162 that motor 14 is exported, the feedback signal 162 in encoder 16 is collected again by driver 10, the signal 103 of generation driving after treatment is to control motor 14, and feedback signal 162 includes the position of motor 14, velocity and acceleration etc..
Device for monitoring temperature 1 for motor comprises one first temperature sensor T1 further, is arranged at motor 14 interior in order to detect the variations in temperature within motor 14, to produce one first temperature signal；And one second temperature sensor T2, it is arranged at encoder 16 internal and be attached at the external shell of motor 14, in order to detect the variations in temperature of motor 14 external shell, to produce one second temperature signal.It is internal and be attached at the external shell of motor 14 that the mode that described second temperature sensor T2 may utilize the mode sticked together or utilization is inlayed is arranged at encoder 16；Wherein the first temperature sensor T1 and the second temperature sensor T2 is respectively via two transmission lines, first temperature signal and the second temperature signal are transmitted to (line segment S1 and S2) in encoder 16, and integrated the first temperature signal and the second temperature signal by the processing unit 161 within encoder 16 and export one the 3rd temperature signal, 3rd temperature signal is sent in temperature monitoring unit 101 by a transmission line (line segment S3) again, makes the internal variations in temperature with external shell of temperature monitoring unit 101 monitoring motor 14.Connect the transmission line (line segment S1, S2) of the first temperature sensor T1 and the second temperature sensor T2, it can be considered same transmission line with being connected the processing unit 161 transmission line (line segment S3) with temperature monitoring unit 101, all in order to transmit temperature signal, the most single transmission line carries out temperature signal transmission, it is effectively reduced the complexity of distribution, promotes dispensing efficiency and reduce distribution cost.
In addition, temperature monitoring unit 101 also has temperature sensor abnormality alarm device 1011 and a motor overtemperature warning system 1012, wherein temperature sensor abnormality alarm device 1011 is in order to indicate the working condition of two temperatures sensing element (T1, T2), when the temperature difference of the first temperature sensor T1 and the second temperature sensor T2 exceedes the temperature range of normal specification, then temperature sensor abnormality alarm device 1011 can send abnormality alarm message, and warning user the first temperature sensor T1 and the second temperature sensor T2 produces the situation of temperature anomaly；Motor overtemperature warning system 1012 then in order to indicate motor 14 by thermal conditions, therefore over proof temperature range is had gone up when the internal temperature of the first sensed motor of temperature sensor T1 14, or when the external shell temperature of the second sensed motor of temperature sensor T2 14 has gone up over proof temperature range, thus can send a temperature alarm message in advance by motor overtemperature warning system 1012, the temperature of warning motor 14 has reached overtemperature protection scope, the most then can export one and interrupt signal one safe jerk protection mechanism of startup, shut down in order to control motor 14, reach to protect the purpose of motor 14.Thing to be illustrated, the first temperature sensor T1 and the second temperature sensor T2 are critesistor (Thermistor), thermal diode (Thermal Diode) or thermocouple (Thermal Couple) etc..
When motor 14 in the running, monitor the first temperature sensor T1 and the change of the second sensed temperature of temperature sensor T2 by the temperature monitoring unit 101 within driver 10 simultaneously, that is the variations in temperature of simultaneously monitoring motor 14 internal temperature and external shell, therefore when the internal temperature of the first sensed motor of temperature sensor T1 14 rises to rated temperature range or rises to rated temperature range when the external shell temperature of the second sensed motor of temperature sensor T2 14, motor overtemperature warning system 1012 will send temperature alarm message in advance, such as: pass through buzzer, speaker sends sound or passes through cresset flashing, reach to warn the temperature of motor 14 to reach overtemperature protection scope, inform that user motor 14 has overheated phenomenon；If the temperature of motor has exceeded overtemperature protection scope, now system can export interruption signal one safe jerk protection mechanism of startup further, shuts down in order to control motor 14, reaches to protect the function of motor.
Except in addition to being provided with temperature sensor in motor; also temperature sensor it is provided with in the encoder connect with motors; so even temperature sensor within motor damage and cannot be by thermal conditions inside actual induction motor; effect by temperature sensor set in encoder; although induction motor external shell by thermal conditions; but the internal current temperature of motor can be deduced according to the change of motor external shell temperature; equally can reach to protect the purpose of motor, motor can be operated under the temperature range of safety.
As in figure 2 it is shown, the flow process of described monitoring method is as follows:
Step 200: monitoring motor inside and external temperature；The change of the temperature internal and outside by the temperature monitoring unit monitoring motor of internal drive, that is observe the first temperature sensor T1 and the change of the second sensed temperature of temperature sensor T2, subsequently enter step 201.
Step 201: judge whether the temperature difference of two temperatures sensing element exceedes the temperature range of normal specification；If the temperature difference of the first temperature sensor T1 and the second temperature sensor T2 exceedes the temperature range of normal specification, skip to step 202 and sent abnormality alarm message by temperature sensor abnormality alarm device, warning user the first temperature sensor T1 and the second temperature sensor T2 produces the situation of temperature anomaly, if the temperature difference of the first temperature sensor T1 and the second temperature sensor T2 is under the temperature range of normal specification, then continue to 203.
Step 203: judge that motor is the most overheated；Temperature within detecting motor can be higher than the temperature of motor external shell, the temperature that first temperature sensor T1 and the second temperature sensor T2 is sensed, or the temperature difference of two temperatures sensing element can determine whether that current motor is by thermal conditions, in other words, when the internal temperature of the first sensed motor of temperature sensor has gone up over proof temperature range, when the external shell temperature of the second sensed motor of temperature sensor has gone up and exceedes rated temperature range, then skip to step 204, if the internal temperature of the first sensed motor of temperature sensor T1 is not yet increased beyond preset temperature range, or the second temperature sensor T2 sensed motor external shell temperature is not yet increased beyond preset temperature range, then to step 206.
Step 204: overtemperature warning system sends alert message；When motor inside and outside temperature has gone up and reaches rated temperature range, a temperature alarm message can be sent in advance such as: send sound by buzzer, speaker or pass through cresset flashing by overtemperature warning system, inform user motor superheat state, subsequently enter step 205.
Step 205: start motor safe jerk protection mechanism；When motor temperature exceedes overtemperature protection scope, a safe jerk protection mechanism will be started in order to stop the operating of motor, reach to protect the purpose of motor.
Step 206: motor is in normal operating temperature range.
In sum, owing to motor arranges temperature sensor in being installed on the encoder of motor external shell, two temperatures sensing element is utilized to be respectively induced the change of motor inside and outside portion case temperature, and temperature monitoring unit is set in driver monitors temperature difference produced by the temperature of inside and outside portion housing, can effectively monitoring motor by thermal conditions, and guarantee the working condition of temperature sensor, increase the life-span that motor uses, and make motor that good high power can be maintained at normal working temperature to export.
It is emphasized that: be the most only presently preferred embodiments of the present invention, not the present invention is made any pro forma restriction, every any simple modification, equivalent variations and modification made above example according to the technical spirit of the present invention, all still falls within the range of technical solution of the present invention.
Claims (7)
1. the device for monitoring temperature for motor, it is characterised in that: include
Driver, has a temperature monitoring unit, and produces a driving signal in order to control and to drive motor running；
Encoder, it is installed on the external shell of motor, has a processing unit, and described feedback signal is also back to driver by the feedback signal that exported during in order to read motor running；
First temperature sensor, is arranged in motor, in order to detect the variations in temperature within motor, to produce the first temperature signal；
Second temperature sensor, is arranged in encoder and is attached at the external shell of motor, in order to detect the variations in temperature of the external shell of motor, to produce the second temperature signal；And
First transmission line, for concatenating described first temperature sensor and encoder, in order to be sent in encoder by described first temperature signal；
Second transmission line, for concatenating described second temperature sensor and encoder, in order to be sent in encoder by described second temperature signal；
The processing unit of described encoder is integrated the first temperature signal and the second temperature signal and is exported the 3rd temperature signal, 3rd temperature signal is sent in the temperature monitoring unit of described driver by the 3rd transmission line, makes the internal variations in temperature with external shell of temperature monitoring unit monitoring motor.
Device for monitoring temperature for motor the most according to claim 1, it is characterized in that: described temperature monitoring unit also comprises a temperature sensor abnormality alarm device and a motor overtemperature warning system, described temperature sensor abnormality alarm device system in order to indicate the first temperature sensor and the working condition of the second temperature sensor, described motor overtemperature warning system in order to indicate motor by thermal conditions.
Device for monitoring temperature for motor the most according to claim 1 and 2, it is characterised in that: described first temperature sensor and the second temperature sensor are critesistor, thermal diode or thermocouple.
Device for monitoring temperature for motor the most according to claim 1, it is characterised in that: described first temperature signal is sent in the processing unit of described encoder by described first temperature sensor by described first transmission line；Described second temperature signal is sent in the processing unit of described encoder by described second temperature sensor by described second transmission line.
Device for monitoring temperature for motor the most according to claim 1, it is characterised in that: described feedback signal includes the position of described motor, velocity and acceleration.
Device for monitoring temperature for motor the most according to claim 1, it is characterised in that: described first transmission line, the second transmission line, the 3rd transmission line are same transmission line.
7. the monitoring method of the device for monitoring temperature for motor according to claim 1, it is characterised in that: comprise the steps,
S1, by the first temperature sensor and the second temperature sensor monitoring motor respectively internal and external temperature, and respectively will be in the first temperature signal of monitoring gained and the processing unit of the second temperature signal transmission extremely described encoder by the first transmission line and the second transmission line；
S2, the processing unit of described encoder integrate the first temperature signal and the second temperature signal and output temperature is poor, in the temperature monitoring unit by the 3rd transmission line to described driver, and the change of the temperature that temperature monitoring unit monitoring motor is internal with outside；
S3, described temperature monitoring unit judge whether the temperature difference of first, second temperature sensor exceedes the temperature range of normal specification；
S4, when the temperature difference of described first temperature sensor and the second temperature sensor exceedes the temperature range of normal specification, the temperature sensor abnormality alarm device in described temperature monitoring unit sends abnormality alarm message；
S5, when the temperature difference of described first temperature sensor and the second temperature sensor is in the temperature range of normal specification, described temperature monitoring unit judges that motor is the most overheated；
S6, have gone up over proof temperature range when the internal temperature of described first the sensed motor of temperature sensor, or when the external shell temperature of the second sensed motor of temperature sensor has gone up and exceedes rated temperature range, described motor overtemperature warning system sends alert message；
S7, after described motor overtemperature warning system sends alert message; described driver exports one and interrupts signal in order to start motor safe jerk protection mechanism; when motor temperature exceedes overtemperature protection scope, a safe jerk protection mechanism will be started in order to stop the operating of motor；
S8, when described first temperature sensor and the sensed temperature of the second temperature sensor are not yet increased beyond preset temperature range, and described motor normally works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410473436.2A CN104236746B (en) | 2014-04-30 | 2014-09-17 | Device for monitoring temperature and monitoring method for motor |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218282 | 2014-04-30 | ||
| CN2014202182828 | 2014-04-30 | ||
| CN201420218282.8 | 2014-04-30 | ||
| CN201410473436.2A CN104236746B (en) | 2014-04-30 | 2014-09-17 | Device for monitoring temperature and monitoring method for motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104236746A CN104236746A (en) | 2014-12-24 |
| CN104236746B true CN104236746B (en) | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410473436.2A Active CN104236746B (en) | 2014-04-30 | 2014-09-17 | Device for monitoring temperature and monitoring method for motor |
| CN201420533618.XU Withdrawn - After Issue CN204128709U (en) | 2014-04-30 | 2014-09-17 | For the device for monitoring temperature of motor |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420533618.XU Withdrawn - After Issue CN204128709U (en) | 2014-04-30 | 2014-09-17 | For the device for monitoring temperature of motor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236746B (en) * | 2014-04-30 | 2016-10-26 | 苏州新代数控设备有限公司 | Device for monitoring temperature and monitoring method for motor |
| JP6852476B2 (en) * | 2017-03-13 | 2021-03-31 | オムロン株式会社 | Rotating machine condition monitoring system, rotating machine condition monitoring method, programs and recording media |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769990A (en) * | 2008-12-26 | 2010-07-07 | 鸿富锦精密工业（深圳）有限公司 | System and method for testing temperature rising characteristic of motor |
| CN103032352A (en) * | 2011-10-04 | 2013-04-10 | 哈米尔顿森德斯特兰德公司 | Motor housing thermal sensing |
| CN103109460A (en) * | 2010-09-28 | 2013-05-15 | 日产自动车株式会社 | Temperature protection device |
| CN204128709U (en) * | 2014-04-30 | 2015-01-28 | 苏州新代数控设备有限公司 | For the device for monitoring temperature of motor |
-
2014
- 2014-09-17 CN CN201410473436.2A patent/CN104236746B/en active Active
- 2014-09-17 CN CN201420533618.XU patent/CN204128709U/en not_active Withdrawn - After Issue
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769990A (en) * | 2008-12-26 | 2010-07-07 | 鸿富锦精密工业（深圳）有限公司 | System and method for testing temperature rising characteristic of motor |
| CN103109460A (en) * | 2010-09-28 | 2013-05-15 | 日产自动车株式会社 | Temperature protection device |
| CN103032352A (en) * | 2011-10-04 | 2013-04-10 | 哈米尔顿森德斯特兰德公司 | Motor housing thermal sensing |
| CN204128709U (en) * | 2014-04-30 | 2015-01-28 | 苏州新代数控设备有限公司 | For the device for monitoring temperature of motor |
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| Publication number | Publication date |
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| CN104236746A (en) | 2014-12-24 |
| CN204128709U (en) | 2015-01-28 |
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Address after: 215000 Chunhui Road, Suzhou Industrial Park, Jiangsu Province Patentee after: New Generation Science and Technology (Suzhou) Co., Ltd. Address before: 215021 Xinsu Industrial Park, No. 5 Xinghan Street, Suzhou City, Jiangsu Province Patentee before: Suzhou Xindai Numerical Control Equipment Co., Ltd. |
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