CN215180705U - Motor state on-line monitoring system - Google Patents

Abstract

The utility model discloses a motor state on-line monitoring system, motor state on-line monitoring system includes shell, collection integrated circuit board and sensor, and collection integrated circuit board interface, collection port, power source, alarm output interface, communication port, antenna interface have been seted up to the shell, and collection integrated circuit board is installed in the shell, and collection integrated circuit board has AD sampling chip, CPU chip, communication module, jack and power module, and the sensor passes through the plug or the jack with the collection integrated circuit board links to each other, and the sensor contains voltage transmitter and current transformer. The utility model discloses can be different according to the motor power that the scene needs gathered, dispose external current sensor in a flexible way to the realization is to the real-time, the continuous monitoring of different power motor operating condition.

Description

Motor state on-line monitoring system

Technical Field

The utility model relates to a power equipment monitoring technology field especially relates to a motor state on-line monitoring system.

Background

The motor is called motor for short, is known as the mother of industry, has become the power base of most enterprises, and whether it can run safely and reliably is directly related to the smoothness of production work. Especially, fans, blowers, dust blowers, etc. based on high power motors are important for ensuring the motors to run in good condition.

With the development of sensing technology in recent years, maintenance of important industrial equipment such as motors has been developed to a mode of performing maintenance according to the state of the equipment and has evolved to a predictive maintenance mode. The state data is collected through various types of sensors and data collecting devices, the real-time state of the equipment is monitored, the condition of the summarized data is analyzed and provided for related personnel, and the arrangement of maintenance tasks is guided, so that the equipment with hidden trouble is responded as soon as possible, and further deterioration of the trouble is avoided.

The monitoring method to the motor state is realized based on vibration sensor mostly at present, but vibration sensor need fix on the motor, and is higher to mounted position and angle requirement on the one hand, and on the other hand has very big restriction in the aspect of mains operated, if use the battery then need regularly change, if adopt direct power supply then the construction wiring is very inconvenient. However, the conventional method for collecting the electrical parameters of the motor still depends on a common power meter, can only measure basic power utilization information, and cannot be used for motor state monitoring and predictive maintenance.

In order to solve the above problems, the present document provides an on-line motor state monitoring terminal which is convenient to install and can support predictive maintenance application, so that predictive maintenance of a motor is comprehensively realized, safe and effective operation of the motor is ensured, and a normal production order is maintained.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the motor state online detection terminal can be installed in an electrical cabinet far away from a motor, and flexibly configures the external current sensor according to different motor powers required to be collected on site, so that the working states of the motors with different powers can be continuously monitored in real time.

The utility model provides a technical scheme is, a motor state on-line monitoring system, a serial communication port, including shell 1, collection integrated circuit board (2) and sensor (3), shell 1 has been seted up and has been gathered integrated circuit board interface, collection port (11), power source (12), alarm output interface (13), communication port (14), antenna interface (15), it installs to gather integrated circuit board (2) in the shell 1, it has AD sampling chip (21), CPU chip (22), communication module (23), jack (24) and power module (25) to gather integrated circuit board (2), sensor (3) with it links to each other to gather integrated circuit board (2), the sensor contains voltage transmitter and current transformer, voltage transmitter with current transformer is the ring structure and is used for the cover on the terminal of motor.

Further, the antenna interface (15) is connected with a WiFi module and is arranged on the outer side of the shell 1.

Further, the acquisition board card (2) provides a DC voltage reduction function after 24V access through the power module 25.

Further, gather integrated circuit board (2) and be equipped with warning module, warning module includes one or more in alarm indicator and the buzzer.

Furthermore, one or more of a wired network module, a WiFi module, an RS485 interface and a CAN bus interface CAN be integrated in the communication unit (23).

Furthermore, a plug or a jack on the acquisition board card (2) is connected with the voltage and current transformer, the plug or the jack is preferably arranged on the outer side surface of the acquisition board card, and the outer side surface is exposed out of the shell when the acquisition board card is arranged in the shell.

Further, the shell 1 is installed on the motor control cabinet through a guide rail buckle arranged on the bottom surface.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

(1) the utility model discloses a motor state on-line monitoring terminal can carry out real-time, accurate monitoring to the running state of motor through the voltage and the electric current parameter of monitoring motor, when monitoring the parameter and surpassing the settlement threshold value, can report to the police in time, avoids appearing bigger problem;

(2) the utility model discloses a motor state on-line monitoring terminal can carry out high frequency sampling to the time domain waveform of the voltage of motor and electric current, after compression treatment, can transmit to gateway equipment or host computer and carry out advanced algorithm processing to discover the trouble hidden danger fast, in time, realize the predictive maintenance target, thereby let maintenance and maintenance work implement as early as possible, early warning in advance, prepare in advance, improve economic benefits;

(3) the motor state online monitoring terminal of the utility model can adaptively configure the current sensor according to the power of the motor to be detected, thereby meeting the state monitoring requirements of motors with different powers, different sizes and various models;

(4) the utility model discloses to current sensor design non-invasive mounting structure, need not to the motor outage when making the installation of sensor in the motor electric appliance cabinet, can not influence the normal operating condition of motor, the overall arrangement position is nimble, and easy operation is swift, can improve measuring accuracy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic illustration of a front interface of a housing;

FIG. 2 is a schematic view of a housing back interface;

FIG. 3 is a schematic diagram of an acquisition board card structure;

FIG. 4 is a schematic diagram of a sensor configuration;

in the figure, 1, a shell 11, an acquisition port 12, a power interface 13, an alarm output interface 14, a communication port 15, an antenna interface 2, an acquisition board card 21, an AD sampling chip 22, a CPU chip 23, a communication module 24, a jack 25, a power module 3 and a sensor are arranged.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the following specific embodiments.

Referring to fig. 1 to 4, the motor state online monitoring system of the present embodiment mainly includes a housing 1, a collecting board 2, a sensor 3, and other components. The housing 1 is made of a material which is not easy to corrode, such as a stainless steel plate, and is structurally shown in fig. 1 and 2, and an acquisition board card interface, an acquisition port 11, a power supply interface 12, an alarm output interface 13, a communication port 14 and an antenna interface 15 which are used for exposing the acquisition board card 2 are arranged on the outer side of the housing. The antenna interface 15 connected with the WiFi module is externally arranged on the shell 1, so that higher gain can be obtained, the sensitivity is high, and the directivity is good. The bottom surface of shell 1 has the guide rail buckle for with the guide rail cooperation installation of configuration on the motor control cabinet, make things convenient for monitor terminal to arrange in a flexible way in the motor control cabinet.

The acquisition board card 2 is installed in the housing 1, and the structure is as shown in fig. 3, and the acquisition board card 2 is integrated with an AD sampling chip 21, a CPU chip 22, a communication module 23, a jack 24 and a power module 25. One or more of a wired network module, a WiFi module, an RS485 interface, and a CAN bus interface may be integrated in the communication unit 23. The acquisition board card 2 is also provided with a warning module which comprises one or more of an alarm indicator lamp and a buzzer. The acquisition board card 2 provides a DC voltage reduction function after 24V access through the power module 25, and electricity is conveniently taken in the electrical cabinet.

The sensor contains voltage transmitter and current transformer, and plug or jack 24 on the collection integrated circuit board 2 link to each other with voltage transformer and current transformer, and the plug or jack are preferred to be laid on the lateral surface of gathering the integrated circuit board, and expose shell 1. The plug or jack 24 is preferably an industrial plug or jack, so as to effectively prevent dust, water and oil. The sensor 3 is of an openable circular structure and is buckled on a power terminal or a power lead of the motor to be tested after being opened, the motor does not need to be powered off or disconnected, and the motor is simple, convenient and quick to assemble and disassemble. The number of the sensors 3 is three, and the sensors are respectively sleeved on a three-phase alternating current wiring terminal or a three-phase alternating current lead of the motor when in use. The current transmitter adopts an open-close type structure and is fixed at a monitoring position in the motor electrical control cabinet in a non-invasive installation mode during use.

In the using process, the AD sampling chip 21 in the acquisition board card 2 can acquire detection signals which are generated by the sensor in an induction mode and represent the running state of the motor, such as working voltage and current, and the CPU chip 22 carries out preprocessing, data conversion and the like on the detection signals so as to generate corresponding sampling data; and the data is transmitted to an external gateway device or an upper computer through the communication module 23 for data analysis and fault prediction. One or more of a wired network module, a WiFi module, an RS485 interface, and a CAN bus interface may be integrated in the communication unit 23. The wired network module can be used for cloud communication or communication with local network equipment; the WiFi module can be used for cloud communication; and the RS485 interface and the CAN bus interface are used for local networking communication. By arranging the communication unit 23, the collected motor state data can be transmitted to a remote server or other types of peripheral equipment in real time, time domain waveform analysis is carried out, the motor state and faults are identified, and a planned and predictable maintenance strategy can be further customized for the motor. The acquisition board card 2 can also be provided with a warning module which comprises an alarm indicating lamp or a buzzer, and when the running state of the motor is abnormal, the motor can be immediately warned.

The sensor comprises a voltage transmitter and a current transformer which are used for sensing three-phase voltage and three-phase current data of the motor and generating corresponding detection signals. The current motor mostly adopts three-phase AC power supply, therefore this embodiment is preferred to be configured three sensor 3, during the use respectively the suit on the three-phase AC terminal or the three-phase AC lead wire of the motor that awaits measuring to detect the three-phase voltage and the three-phase current of inputing the motor that awaits measuring respectively, and then generate corresponding voltage and current detection signal, transmit to the voltage current collection integrated circuit board 2 of being connected with sensor 3, through high frequency sampling in order to convert the actual voltage of motor and electric current time domain curve, in order to realize treating the monitoring of motor operating condition that awaits measuring.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (7)

1. The utility model provides a motor state on-line monitoring system, a serial communication port, including shell 1, collection integrated circuit board (2) and sensor (3), collection integrated circuit board interface, collection port (11), power source (12), alarm output interface (13), communication port (14), antenna interface (15) have been seted up in shell (1), collection integrated circuit board (2) are installed in shell 1, collection integrated circuit board (2) integration has AD sampling chip (21), CPU chip (22), communication module (23), jack (24) and power module (25), sensor (3) with collection integrated circuit board (2) link to each other, the sensor contains voltage transmitter and current transformer, voltage transmitter with current transformer is the ring structure and is used for the cover on the terminal of motor.

2. The motor state online monitoring system according to claim 1, characterized in that: the antenna interface (15) is connected with a WiFi module and arranged on the outer side of the shell (1).

3. The motor state online monitoring system according to claim 1 or 2, characterized in that: the acquisition board card (2) provides a DC voltage reduction function after 24V access through a power module (25).

4. The motor state online monitoring system according to claim 1, characterized in that: gather integrated circuit board (2) and be equipped with warning module, warning module includes one or more in alarm indicator and the buzzer.

5. The motor state online monitoring system according to claim 1 or 4, characterized in that: one or more of a wired network module, a WiFi module, an RS485 interface and a CAN bus interface CAN be integrated in the communication module (23).

6. The motor state online monitoring system according to claim 1, characterized in that: the plug or jack on the acquisition board card (2) is connected with the voltage and current transformer, the plug or jack is preferably arranged on the outer side surface of the acquisition board card, and the outer side surface is exposed out of the shell when the acquisition board card is arranged in the shell.

7. The motor state online monitoring system according to claim 1, characterized in that: the shell (1) is installed on the motor control cabinet through a guide rail buckle distributed on the bottom surface.

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