CN213846227U

CN213846227U - Intelligent motor protector

Info

Publication number: CN213846227U
Application number: CN202022252475.3U
Authority: CN
Inventors: 戢卫平; 王锦友; 吴海峰
Original assignee: Energiedaten Technology Shanghai Co ltd
Current assignee: Energiedaten Technology Shanghai Co ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-07-30
Anticipated expiration: 2030-10-12

Abstract

The utility model provides an intelligent motor protector, which comprises a device body, wherein the device body is internally provided with an MCU, a digital signal output module, an electrical parameter measuring module, a switching power supply module, a digital signal input module and a temperature measuring module; the output end of the MCU is respectively and electrically connected with the digital signal output module, and the input end of the MCU is respectively and electrically connected with the output ends of the electrical parameter measuring module, the switching power supply module, the digital signal input module and the temperature measuring module. Data monitored by the electrical parameter measuring module and the temperature measuring module are fed back to the MCU, and the MCU controls the digital signal output module so as to realize protection when faults such as phase failure, overload, short circuit, undervoltage, overvoltage, electric leakage and the like occur to the motor; the time control, software self-diagnosis, incoming call self-recovery, self-starting sequence, fault memory and self-locking are realized through the MCU program.

Description

Intelligent motor protector

Technical Field

The utility model belongs to the technical field of the electron and specifically relates to an intelligent motor protector.

Background

The number of domestic motors is huge, but the number of motors burnt out every year and economic losses caused by the motors are also huge. At present, an effective way for solving the problem of motor burnout is to add a motor protector.

The main types of motor protectors in the prior art are three: 1. the thermal relay has the characteristics of inverse time limit performance and simple structure in the aspect of protecting the overload of the motor. But has the advantages of few functions, no open-phase protection, unsmooth ventilation, chamber sweeping, rotation blockage and long-term overload on the motor; faults such as frequent start-up do not play a role in protection. 2. The temperature relay has the advantages of simple structure, reliable action, wide protection range and the like, but the action is slow and the return time is long. 3. The electronic motor protector can detect phase failure or overload signal based on the principle of detecting the change of current in the wire including sampling, positive sequence, negative sequence, zero sequence and overcurrent. Besides the function of phase failure protection, the device also has the functions of overload and locked rotor protection. The motor protector has relatively single function.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: an intelligent motor protector with multi-functional protection is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: an intelligent motor protector comprises a device body, wherein an MCU, a digital signal output module, an electrical parameter measuring module, a switching power supply module, a digital signal input module and a temperature measuring module are arranged in the device body; the output end of the MCU is respectively and electrically connected with the digital signal output module, and the input end of the MCU is respectively and electrically connected with the output ends of the electrical parameter measuring module, the switching power supply module, the digital signal input module and the temperature measuring module;

the digital signal output module is used for controlling an output signal of the digital signal output module according to a signal sent by the MCU;

the electric parameter measuring module is used for collecting voltage and current signals of the motor;

the switching power supply module converts 220V alternating current into low-voltage direct current to provide power supply for the whole device;

the digital signal input module is used for acquiring an externally accessed digital signal;

the temperature measuring module is used for measuring temperature data of the motor.

The input end of the analog quantity output module is electrically connected with the output end of the MCU, and the analog quantity output module is used for equivalently converting a signal into 4-20 mA current to be output in a communication mode of a product;

the input end of the RS485 communication interface is electrically connected with the output end of the MCU, and the device is used for realizing the communication between the device body and the upper computer and realizing the remote monitoring of the device.

And the liquid crystal display module is electrically connected with the output end of the MCU and is used for displaying the electrical parameter data and the temperature data output by the MCU.

And the input end of the indicator light module is electrically connected with the output end of the MCU and used for indicating the running state of the current device, including starting, stopping, tripping and alarming.

The beneficial effects of the utility model reside in that: data monitored by the electrical parameter measuring module and the temperature measuring module are fed back to the MCU, and the MCU controls the digital signal output module so as to realize protection when faults such as phase failure, overload, short circuit, undervoltage, overvoltage, electric leakage and the like occur to the motor; the time control, software self-diagnosis, incoming call self-recovery, self-starting sequence, fault memory and self-locking are realized through the MCU program.

Drawings

Fig. 1 is a schematic circuit diagram of a motor protector according to a first embodiment of the present invention;

description of reference numerals:

10. a device body; MCU; 12. a liquid crystal display module; 13. a digital signal output module; 14. an indicator light module; 15. an analog quantity output module; 16. an electrical parameter measurement module; 17. a switching power supply module; 18. A digital signal input module; 19. a temperature measurement module; 20. and an RS485 communication interface.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1, an intelligent motor protector comprises a device body, wherein an MCU, a digital signal output module, an electrical parameter measuring module, a switching power supply module, a digital signal input module and a temperature measuring module are arranged in the device body; the output end of the MCU is respectively and electrically connected with the digital signal output module, and the input end of the MCU is respectively and electrically connected with the output ends of the electrical parameter measuring module, the switching power supply module, the digital signal input module and the temperature measuring module;

The utility model discloses a working process: the device is firstly installed on a motor needing to be detected, data acquisition is carried out through digital signal input, a module electrical parameter module and a temperature measurement module, the digital signal, the electrical parameter data and the temperature data are transmitted to an MCU (microprogrammed control unit) for analysis and judgment, and after the MCU judges the working state of the motor, the opening and closing of the motor are controlled through a digital signal output module.

From the above description, the beneficial effects of the present invention are: data monitored by the electrical parameter measuring module and the temperature measuring module are fed back to the MCU, and the MCU controls the digital signal output module so as to realize protection when faults such as phase failure, overload, short circuit, undervoltage, overvoltage, electric leakage and the like occur to the motor; the time control, software self-diagnosis, incoming call self-recovery, self-starting sequence, fault memory and self-locking are realized through the MCU program.

According to the description, the analog output module is used as a communication mode and is used for being compatible with old-fashioned communication items, and the RS485 communication interface is used as another communication mode and is used for realizing the communication between the device body and the upper computer and realizing the remote monitoring of the device.

As can be seen from the above description, the electrical parameter data and the temperature data are visually displayed on the liquid crystal screen by means of a bar graph, a line graph, a vector diagram, or the like.

As can be seen from the above description, the indicator light module is provided so that a user can clearly understand the current operating state of the motor and perform analysis by combining various operating states with electrical parameter data and temperature data.

Referring to fig. 1, the first embodiment of the present invention is:

the intelligent motor protector of this embodiment, including device body 10, the inside of device body 10 is provided with MCU11, liquid crystal display module 12, digital signal output module 13, analog output module 15, pilot lamp module 14, electrical parameter measurement module 16, switching power supply module 17, digital signal input module 18 and temperature measurement module 19, still disposes RS485 communication interface 20. The output end of the MCU11 is electrically connected to the input ends of the digital signal output module 13, the indicator light module 14, the RS485 communication interface 20, and the analog output module 15.

The input end of the MCU11 is electrically connected with the output ends of the electrical parameter measuring module 16, the switching power supply module 17, the digital signal input module 18 and the temperature measuring module 19 respectively.

The input end of the RS485 communication interface is electrically connected with the output end of the MCU 11.

The digital signal output module 13 is used for controlling the output signal of the digital signal output module 13 according to the signal sent by the MCU 11.

The analog output module 15 is used for a communication mode of a product, equivalently converts signals into 4-20 mA current for output, and is compatible with some old communication items.

The electrical parameter measuring module 16 is used for collecting voltage and current signals of the motor and transmitting the signals to the MCU 11.

The switching power supply module 17 converts the 220V ac power into a low voltage dc power to supply power to the entire apparatus.

The digital signal input module 18 is used for collecting externally accessed digital signals and transmitting the digital signals to the MCU 11.

The temperature measuring module 19 is used for measuring the temperature data of the motor and transmitting the temperature data to the MCU 11.

The RS485 communication interface 20 is used as another communication mode for realizing the communication between the device body and the upper computer and realizing the remote monitoring of the device.

The MCU11 comprehensively determines the operating status of the motor based on the digital signals, the electrical parameter data and the temperature data, and transmits the electrical parameter data and the temperature data to the lcd module 12 for display, optionally in the form of bar chart, line chart, vector chart, etc.

The input end of the indicator light module 14 is electrically connected with the output end of the MCU11, and is used for indicating the current running state of the device, including starting, stopping, tripping and alarming according to the data processed by the MCU 11.

The utility model discloses a theory of operation and use flow specifically do: firstly, the device is arranged on a motor to be detected, data acquisition is carried out through a digital signal input module 18, an electrical parameter module and a temperature measurement module 19, digital signals, electrical parameter data and temperature data are transmitted to an MCU11 for analysis and judgment, and the MCU11 visually displays the electrical parameter data and the temperature data on a liquid crystal screen in modes of a column diagram, a line diagram, a vector diagram and the like; after the MCU11 judges the working state of the motor, the running state of the motor is displayed through the indicator light module 14; the on-off of the motor is controlled by the digital signal output module 13. Meanwhile, the MCU11 is electrically connected with the analog quantity output module 15, and the analog quantity output module 15 outputs current signals for being compatible with some old-fashioned communication items; the MCU11 electricity is connected RS485 communication interface 20 and is uploaded data to the host computer, realizes that the computer networking transmits motor operation data to the high in the clouds, can monitor, monitor many motor work simultaneously.

To sum up, the utility model provides an intelligent motor protector integrates protection, remote measurement, communication and remote control, the data monitored by the electrical parameter measuring module and the temperature measuring module are fed back to the MCU, the MCU controls the digital signal output module, and then the protection is realized when the motor is controlled to have faults such as phase failure, overload, short circuit, undervoltage, overvoltage, electric leakage and the like; displaying current and voltage by setting a liquid crystal display module; the time control, software self-diagnosis, incoming call self-recovery, self-starting sequence, fault memory and self-locking are realized through an MCU program; an analog output module and an RS485 communication interface are configured, so that computer networking is realized, and meanwhile, the work of a plurality of motors can be monitored and monitored, and remote alarm can be realized.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. An intelligent motor protector comprises a device body and is characterized in that an MCU, a digital signal output module, an electrical parameter measuring module, a switching power supply module, a digital signal input module and a temperature measuring module are arranged in the device body; the output end of the MCU is respectively and electrically connected with the digital signal output module, and the input end of the MCU is respectively and electrically connected with the output ends of the electrical parameter measuring module, the switching power supply module, the digital signal input module and the temperature measuring module;

2. The intelligent motor protector as claimed in claim 1, further comprising an analog output module and an RS485 communication interface, wherein the input end of the analog output module is electrically connected with the output end of the MCU, and is used for a communication mode of a product to equivalently convert a signal into a current of 4 to 20mA for output;

3. The intelligent motor protector of claim 1 further comprising a liquid crystal display module electrically connected to the output of the MCU for displaying the electrical parameter data and temperature data output by the MCU.

4. The intelligent motor protector of claim 1 further comprising an indicator light module having an input electrically connected to the output of the MCU for indicating the current device operating status including start, stop, trip and alarm.