CN111504384A - Monitoring system and method for small and medium-sized motor driving equipment - Google Patents
Monitoring system and method for small and medium-sized motor driving equipment Download PDFInfo
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- CN111504384A CN111504384A CN202010388484.7A CN202010388484A CN111504384A CN 111504384 A CN111504384 A CN 111504384A CN 202010388484 A CN202010388484 A CN 202010388484A CN 111504384 A CN111504384 A CN 111504384A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
Abstract
The invention discloses a monitoring system and a method for small and medium-sized motor driving equipment, wherein the monitoring system comprises: the system comprises a data acquisition module, a distributed intelligent sensor, a microcontroller module, a wireless communication module, a power management module, a state indication module and a cloud diagnosis platform. The data acquisition module, the microcontroller module, the wireless communication module, the power management module and the state indication module are all located inside the motor junction box, and the distributed intelligent sensor is located outside the motor. The invention can realize real-time state monitoring of the medium and small motor driving equipment, simultaneously monitor and record the running, abnormal and fault states of the equipment in real time, guide predictive maintenance work through a cloud diagnosis platform and prolong the service life of the motor. A set of low-cost equipment state monitoring scheme which is simple in structure, easy to deploy and expand is provided for small and medium-sized motor driving equipment.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment state monitoring, and particularly relates to a monitoring system and method for small and medium-sized motor driving equipment.
Background
The operation state of the mechanical equipment influences the production benefit of enterprises and the safety of field workers, the operation state of the equipment is mastered in real time, the personal safety of operators can be guaranteed, the production efficiency is improved, the equipment asset loss can be effectively avoided, and the possibility of providing planned spare parts for the enterprises is provided. The state monitoring of the large key equipment through the predictive maintenance technology can discover equipment faults in advance, reduce shutdown loss and ensure smooth production.
The hardware cost and the deployment cost of the predictive maintenance technology in large key equipment are smaller than the self value and the shutdown loss of the equipment, so the application of the predictive maintenance technology is gradually popularized. In actual production, the operation of part of small and medium-sized motor driving equipment also influences the production efficiency and personal safety of enterprises. But aiming at the predictive maintenance technology of small and medium-sized motor driving equipment, the problems of high cost, difficult deployment, low expandability and the like are faced.
Disclosure of Invention
The invention aims to provide a monitoring system and a monitoring method for small and medium-sized motor driving equipment, and aims to solve the problems of high cost, difficulty in deployment and low expandability of equipment predictive maintenance on the small and medium-sized motor driving equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a monitoring system for small and medium-sized motor driving equipment comprises: the system comprises a microcontroller module, a data acquisition module, a distributed intelligent sensor, a state indication module and a wireless communication module, wherein the data acquisition module, the distributed intelligent sensor, the state indication module and the wireless communication module are respectively connected with the microcontroller module; the data acquisition module, the microcontroller module, the state indication module and the wireless communication module are arranged inside the motor junction box, and the distributed intelligent sensor is arranged outside the motor;
the data acquisition module comprises: the current transformer is arranged at the power supply wiring end of the motor and is used for monitoring the working current of the motor; the voltage transformer is arranged on a power supply terminal of the motor and is used for monitoring the working voltage of the motor; the motor temperature sensor is arranged at the upper cover of the motor junction box and used for monitoring the working temperature of the motor; and the encoder is arranged on the outer side of the motor fan and used for monitoring the rotating speed of the motor.
The distributed smart sensor includes: the lubricating oil temperature sensor is arranged on the motor shell and used for monitoring the temperature of the lubricating oil; the lubricating oil quality sensor is arranged on the motor shell and used for monitoring the quality of the lubricating oil; the vibration temperature sensor is arranged on the motor shell and used for monitoring a motor vibration signal;
the wireless communication module is used for connecting the microcontroller module into a wireless communication network and establishing communication with the cloud diagnosis platform.
Specifically, the data acquisition module further includes: the winding temperature sensor is arranged on the motor and used for monitoring the temperature of the motor winding; the microcontroller module is connected with the winding temperature sensor.
Specifically, the microcontroller module is composed of an MCU and an F L ASH, and is configured to control data acquisition, data caching, data compression, data communication, and status indication in the monitoring system.
Specifically, the state indicating module is a three-color indicating lamp arranged on the outer side of a box cover of the motor junction box and used for indicating the running state of the motor.
The power management module is connected with the data acquisition module, the distributed intelligent sensor, the microcontroller module, the state indication module and the wireless communication module respectively and supplies power.
Specifically, when the motor is located indoors, the wireless communication module communicates by using a WiFi signal, and when the motor is located outdoors, the wireless communication module communicates by using 4G, 5G, or NBIoT.
Specifically, the position information, the data acquisition mode and the data compression algorithm of the monitoring system can be configured online, and two configuration modes are supported, wherein one mode is that a mobile phone configuration end is used for realizing local configuration through WiFi, and the other mode is that a PC end is used for realizing remote configuration through the Internet; and the mobile phone end and the PC end receive and display the motor diagnosis result from the cloud diagnosis platform.
Specifically, the power management module performs non-invasive electricity taking through a coil penetrating through a motor power input lead, and outputs a direct current power supply through rectification, filtering and AC/DC conversion.
Specifically, lubricating oil temperature sensor, lubricating oil quality sensor, the temperature sensor that shakes pass through RS485 bus connection respectively the microcontroller module, lubricating oil temperature sensor, lubricating oil quality sensor, shake the temperature sensor and connect mutually through the RS485 bus equally between the sensor.
The other technical scheme of the invention is as follows:
a monitoring method for small and medium-sized motor driving equipment utilizes the monitoring system to comprise the following steps:
the microcontroller module controls the wireless communication module to transmit data acquired by the data acquisition module and the distributed intelligent sensor to the cloud diagnosis platform through a wireless communication network; the cloud diagnosis platform performs data analysis and fault diagnosis, then issues a diagnosis result to the microcontroller module, and finally indicates the current state of the motor driving device through the state indication module.
The invention has the advantages that:
the embodiment of the invention provides a monitoring system for small and medium-sized motor driving equipment, which comprises: the system comprises a microcontroller module, a data acquisition module, a distributed intelligent sensor, a state indication module and a wireless communication module, wherein the data acquisition module, the distributed intelligent sensor, the state indication module and the wireless communication module are respectively connected with the microcontroller module; the current, voltage, winding temperature, motor working temperature, motor rotating speed, lubricating oil temperature, lubricating oil quality, motor vibration temperature and other indexes of the small and medium-sized motor can be comprehensively monitored with the advantages of low cost, easiness in deployment and expandability, and the cost is controlled to be 5% -10% of the cost of the motor.
Specifically, a microcontroller module consisting of the MCU and the F L ASH only needs to complete basic functions such as data acquisition, data caching, data compression, data transmission and the like locally, and the motor state monitoring and diagnosing tasks are completed by the cloud diagnosis platform, so that the performance requirements on the microprocessor and the external memory are reduced, and the construction cost is low.
Specifically, the data acquisition module deploys the sensing equipment inside the motor junction box, and the distributed intelligent sensor can be selectively accessed, so that the number of cables for deploying the data acquisition equipment is reduced to a lower requirement, and the deployment cost is low.
Specifically, the monitoring system is located inside the motor junction box, and the external module box is not required to be installed and fixed in the deployment process.
Specifically, the power management module utilizes a coil penetrating through a motor power input lead to carry out non-invasive electricity taking, the structural modification of the motor is minimum, and the arrangement is easy to realize.
Specifically, the cloud diagnosis platform pushes the diagnosis result to the state indication module, and the health state of the equipment is indicated locally through the three-color indicator lamp, so that the equipment condition can be conveniently checked and maintained on site.
Specifically, lubricating oil temperature sensor, lubricating oil quality sensor, the temperature sensor that shakes pass through RS485 bus connection respectively the microcontroller module, lubricating oil temperature sensor, lubricating oil quality sensor, shake the temperature sensor and connect mutually through the RS485 bus equally between the sensor. The sensor equipment is easy to expand and access, and selective acquisition of various signals can be realized, so that services can be customized.
Compared with the traditional manual inspection, the monitoring system and the monitoring method for the small and medium-sized motor driving equipment provided by the embodiment of the invention are used for monitoring the motor state, so that a large amount of manpower and time are saved, the operation efficiency of the small and medium-sized motor is improved, and the smooth operation of related enterprises is guaranteed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a deployment diagram of an application of a monitoring system on a motor driving device according to an embodiment of the present invention;
FIG. 2 is a system block diagram of a monitoring system provided by an embodiment of the present invention;
fig. 3 is a structural diagram of a data acquisition module of the monitoring system according to the embodiment of the present invention;
fig. 4 is a structural composition diagram of a distributed intelligent sensor of the monitoring system according to the embodiment of the present invention;
FIG. 5 is a schematic view of a monitoring system configuration according to an embodiment of the present invention;
the labels in the figure are: the system comprises a data acquisition module, a 2-distributed intelligent sensor, a 3-microcontroller module, a 4-state indication module, a 5-power management module, a 6-wireless communication module, a 7-wireless communication network, an 8-cloud diagnosis platform, a 9-motor junction box, a 11-current transformer, a 12-voltage transformer, a 13-motor temperature sensor, a 14-encoder, a 15-winding temperature sensor, a 21-lubricating oil temperature sensor, a 22-lubricating oil quality sensor and a 23-vibration temperature sensor.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
The embodiment of the invention provides a monitoring system and a monitoring method for small and medium-sized motor driving equipment.
Referring to fig. 1 and 2, a monitoring system for small and medium-sized motor driving devices includes a data acquisition module 1, a distributed intelligent sensor 2, a microcontroller module 3, a status indication module 4, a power management module 5, and a wireless communication module 6. The data acquisition module 1, the distributed intelligent sensor 2, the state indication module 4, the power management module 5 and the wireless communication module 6 are respectively connected with the microcontroller module 3. The power management module 5 is respectively connected with the data acquisition module 1, the distributed intelligent sensor 2, the microcontroller module 3, the state indication module 4 and the wireless communication module 6. The data acquisition module 1, the microcontroller module 3, the state indication module 4, the power management module 5 and the wireless communication module 6 are installed inside the motor junction box 9, and the distributed intelligent sensor 2 is installed outside the motor.
Referring to fig. 3, the data acquisition module 1 includes: the current transformer 11 is arranged on a power supply terminal of the motor and is used for monitoring the working current of the motor; the voltage transformer 12 is arranged on a power supply terminal of the motor and is used for monitoring the working voltage of the motor; the motor temperature sensor 13 is arranged at the upper cover of the motor junction box 9 and is used for monitoring the working temperature of the motor; the encoder 14 is arranged on the outer side of the motor fan, and the encoder 14 is a key phase sensor and is used for monitoring the rotating speed of the motor; in addition, a winding temperature sensor 15 carried by the motor is connected, so that the cost of sensing equipment is reduced while the temperature of the motor winding is monitored.
Referring to fig. 4, the distributed smart sensor 2 includes: a lubricating oil temperature sensor 21 mounted on the motor housing for monitoring the lubricating oil temperature; a lubricating oil quality sensor 22 mounted on the motor housing for monitoring the quality of the lubricating oil; install temperature sensor 23 that shakes on motor housing for monitor motor vibration signal, this distributed intelligence sensor 2 passes through RS485 bus connection microcontroller module 3, distributed intelligence sensor 2 is connected through the RS485 bus each other equally, and is concrete, lubricating oil temperature sensor 21, lubricating oil quality sensor 22, the temperature sensor 23 that shakes are respectively through RS485 bus connection microcontroller module 3, lubricating oil temperature sensor 21, lubricating oil quality sensor 22, shake and connect mutually through the RS485 bus equally between the temperature sensor 23. And can be selectively deployed according to the actual data acquisition requirements.
The microcontroller module 3 is composed of an MCU (microprogrammed control unit) and an F L ASH (asynchronous serial bus) flash memory and is used for controlling functions of the monitoring system such as data acquisition, data caching, data compression, data communication, state indication and the like.
The state indicating module 4 is a three-color indicating lamp arranged on the outer side of a box cover of the electrode junction box 9 and used for indicating the equipment state fed back to the state indicating module 4 by the cloud diagnosis platform 8, and the indicating lamp comprises three colors of green, yellow and red and respectively represents three states of normal operation, warning and danger of equipment. The state indicating module 4 is used for indicating the current running state of the motor.
And the power management module 5 is used for supplying power to the data acquisition module 1, the distributed intelligent sensor 2, the microcontroller module 3, the state indication module 4 and the wireless communication module 6. The power management module 5 carries out non-invasive electricity taking through a coil penetrating through a motor power input lead, and outputs a direct current power supply through rectification, filtering and AC/DC conversion, so that the power supply requirements of a monitoring unit circuit and a sensor are met.
The wireless communication module 6 is used for accessing the microcontroller module 3 into a wireless communication network 7 to establish communication with a cloud diagnosis platform 8. When the motor is located indoors, the wireless communication module 6 communicates by using WiFi signals, and when the motor is located outdoors, the wireless communication module 6 communicates by using wide area wireless signals such as 4G, 5G, or NBIoT (Narrow Band Internet of Things).
Referring to fig. 5, in the monitoring system for small and medium-sized motor driving devices according to the embodiment of the present invention, position information, a data acquisition mode, a data compression algorithm, and the like may be configured on line. And two configuration modes are supported, one is to realize local configuration by using a WiFi (wireless fidelity) of a mobile phone, and the other is to realize remote configuration by using a PC (personal computer) end through the Internet. Meanwhile, the mobile phone end and the PC end can receive and display the motor diagnosis result from the cloud diagnosis platform 8.
The monitoring system performs tasks such as data acquisition, data caching, compression transmission and the like locally, and transmits acquired data to a cloud diagnosis platform 8 through a wireless communication network 7; the cloud diagnosis platform 8 performs tasks such as data analysis and fault diagnosis, sends a diagnosis result to the monitoring system, and finally indicates the current state of the motor driving device through the three-color lamp, so that the requirements on the performance of the micro-processing module and an external memory are reduced.
Compared with large motor driving equipment, medium and small motor driving equipment has lower cost, but the state of the medium and small motor driving equipment influences the operation of the equipment and even a unit, so that online state monitoring on the medium and small motor driving equipment is also important, and a monitoring system needs to be deployed on the medium and small motor driving equipment. If the monitoring system is deployed on the small and medium-sized motors according to the standard of large motor driving equipment, firstly, the deployment is difficult, secondly, the cost is high, and thirdly, the capacity expansion is difficult. The monitoring system provided by the embodiment of the invention is suitable for small and medium-sized motor driving equipment, is low in deployment difficulty on the small and medium-sized motor driving equipment, can monitor multiple indexes, and has strong practical value, most importantly, the cost can be controlled to be 5% -10% of that of the small and medium-sized motor driving equipment.
The other technical scheme of the invention is as follows:
a monitoring method for small and medium-sized motor driving equipment utilizes the monitoring system to comprise the following steps:
the microcontroller module 3 controls the wireless communication module 6 to transmit data acquired by the data acquisition module 1 and the distributed intelligent sensor 2 to the cloud diagnosis platform 8 through the wireless communication network 7; the cloud diagnosis platform 8 performs data analysis and fault diagnosis, then sends the diagnosis result to the microcontroller module 3, and finally indicates the current state of the motor driving device through the state indication module 4.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. The utility model provides a monitoring system towards middle-size and small-size motor drive equipment which characterized in that includes: the system comprises a microcontroller module (3), and a data acquisition module (1), a distributed intelligent sensor (2), a state indication module (4) and a wireless communication module (6) which are respectively connected with the microcontroller module (3); the data acquisition module (1), the microcontroller module (3), the state indication module (4) and the wireless communication module (6) are arranged inside the motor junction box (9), and the distributed intelligent sensor (2) is arranged outside the motor;
the data acquisition module (1) comprises: the current transformer (11) is arranged on a power supply terminal of the motor and is used for monitoring the working current of the motor; the voltage transformer (12) is arranged on a power supply terminal of the motor and is used for monitoring the working voltage of the motor; the motor temperature sensor (13) is arranged at the upper cover of the motor junction box (9) and used for monitoring the working temperature of the motor; the encoder (14) is arranged outside the motor fan and used for monitoring the rotating speed of the motor;
the distributed smart sensor (2) comprises: a lubricating oil temperature sensor (21) mounted on the motor housing for monitoring the lubricating oil temperature; a lubricant quality sensor (22) mounted on the motor housing for monitoring lubricant quality; the vibration temperature sensor (23) is arranged on the motor shell and used for monitoring a motor vibration signal;
the wireless communication module (6) is used for accessing the microcontroller module (3) into a wireless communication network (7) and establishing communication with a cloud diagnosis platform (8).
2. The monitoring system for medium and small motor-driven equipment according to claim 1, wherein the data acquisition module (1) further comprises: the winding temperature sensor (15) of the motor is used for monitoring the temperature of the motor winding; the microcontroller module (3) is connected with the winding temperature sensor (15).
3. The monitoring system for medium and small motor driving equipment as recited in claim 1, wherein the microcontroller module (3) is composed of MCU and F L ASH, and is used for controlling data collection, data buffering, data compression, data communication, and status indication in the monitoring system.
4. The monitoring system facing the small and medium motor driving device as recited in claim 1, wherein the status indication module (4) is a three-color indicator lamp installed on the outer side of the box cover of the motor junction box (9) for indicating the running status of the motor.
5. The monitoring system for the small and medium-sized motor driving equipment as recited in claim 1, further comprising a power management module (5) installed inside the motor junction box (9), wherein the power management module (5) is respectively connected with the data acquisition module (1), the distributed intelligent sensor (2), the microcontroller module (3), the status indication module (4) and the wireless communication module (6) and supplies power.
6. The monitoring system for small and medium sized motor driving equipment as recited in claim 1, characterized in that the wireless communication module (6) communicates with WiFi signal when the motor is located indoors, and the wireless communication module (6) communicates with 4G, 5G or NBIoT when the motor is located outdoors.
7. The monitoring system for the small and medium-sized motor driving equipment as claimed in claim 1, wherein the position information, the data acquisition mode and the data compression algorithm of the monitoring system can be configured on line, and support two configuration modes, one is to use a mobile phone configuration end to realize local configuration through WiFi, and the other is to use a PC end to realize remote configuration through Internet; and the mobile phone end and the PC end receive and display the motor diagnosis result from the cloud diagnosis platform (8).
8. The monitoring system for the small and medium-sized motor driving equipment as recited in claim 5, wherein the power management module (5) performs non-invasive electricity taking through a coil passing through a motor power input lead, and outputs direct current power through rectification, filtering and AC/DC conversion.
9. The monitoring system for the small and medium-sized motor driving devices as recited in claim 1, wherein the lubricating oil temperature sensor (21), the lubricating oil quality sensor (22) and the vibration temperature sensor (23) are respectively connected to the microcontroller module (3) through an RS485 bus, and the lubricating oil temperature sensor (21), the lubricating oil quality sensor (22) and the vibration temperature sensor (23) are also connected to each other through the RS485 bus.
10. A monitoring method for small and medium-sized motor driving equipment, using the monitoring system of any one of claims 1 to 9, characterized by comprising:
the microcontroller module (3) controls the wireless communication module (6) to transmit data acquired by the data acquisition module (1) and the distributed intelligent sensor (2) to the cloud diagnosis platform (8) through the wireless communication network (7); the cloud diagnosis platform (8) performs data analysis and fault diagnosis, then issues a diagnosis result to the microcontroller module (3), and finally indicates the current state of the motor driving device through the state indication module (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010388484.7A CN111504384A (en) | 2020-05-09 | 2020-05-09 | Monitoring system and method for small and medium-sized motor driving equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010388484.7A CN111504384A (en) | 2020-05-09 | 2020-05-09 | Monitoring system and method for small and medium-sized motor driving equipment |
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| CN111504384A true CN111504384A (en) | 2020-08-07 |
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| CN202010388484.7A Pending CN111504384A (en) | 2020-05-09 | 2020-05-09 | Monitoring system and method for small and medium-sized motor driving equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114764111A (en) * | 2021-01-14 | 2022-07-19 | 广州中国科学院先进技术研究所 | Non-access type machine fault prediction system |
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Application publication date: 20200807 |