CN205809253U - A kind of motor measurement apparatus - Google Patents

Abstract

The utility model relates to a motor measuring device, wherein the main control unit includes a control chip and upper computer software based on LabVIEW; the measuring instrument uses self-made three current transmitters, three voltage transmitters, torque speed sensors, data Acquisition card, and upper computer; multiple signal input terminals of the data acquisition unit are respectively connected to the output terminals of the voltage transmission group, current transmission group, torque sensor, and torque sensor to complete the accurate collection of system data; the power supply unit includes Solar cells and storage batteries used to power the data acquisition unit, main control unit, and torque speed sensor, and a three-phase contact voltage regulator used to power the load motor, voltage and current transducer group, and magnetic powder brake , and has a complete detection circuit. By adopting the above structure, the utility model can effectively monitor the motor in real time, thereby greatly ensuring the normal operation of the motor and the safety and reliability of the power system.

Description

A motor measuring device

technical field

The utility model relates to a motor detection technology, in particular to a motor measuring device with simple operation and convenient use.

Background technique

The motor is the most widely used energy conversion device in production and life. The stable operation of the motor is an important factor to ensure production, and the motor measurement device is particularly important. With the development of power electronics technology, the performance index of the motor is also improved and perfected day by day. These changes put forward higher and higher performance and quality indicators for the motor, and also make the accurate test of the motor performance more important.

Traditional manual control instruments and motor measurement methods that rely entirely on manual visual readings still exist in many motor manufacturers in my country. Not only are the work efficiency low, the labor intensity of workers is high, and there are also indeterminate measurement errors. The traditional manual operation of motor parameter measurement is not suitable for the rapidly developing industry in terms of quantity or quality. If we want to follow the development trend, reduce labor intensity and improve measurement accuracy and efficiency, we must have a motor measurement system with high reliability and efficiency.

Contents of the invention

In order to overcome the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a system capable of effectively monitoring the motor parameters in real time, so as to ensure the accuracy and reliability of the motor parameter measurement.

The research of this patent is to design a motor measuring device on the basis of a virtual instrument, reduce equipment loss and capital investment, and also improve the accuracy of motor measurement parameters. Due to the high flexibility of the virtual instrument equipment, the instrument module can be replaced in real time and quickly according to the site requirements, and the measurement of different motors and parameters can be completed, which reduces the difficulty of the experiment and reduces the workload.

The technical scheme of the utility model is:

A motor measuring device, wherein the main control unit includes a control chip and upper computer software based on LabVIEW; the measuring instrument uses three self-made current transmitters and three voltage transmitters, a torque speed sensor, a data acquisition card, and Host computer; the multiple signal input terminals of the data acquisition unit are respectively connected to the output terminals of the voltage transmission group, current transmission group, torque sensor, and torque sensor to complete the accurate collection of system data; the power supply unit includes Data acquisition unit, main control unit, solar battery and storage battery for power supply of torque speed sensor, and three-phase contact voltage regulator for power supply of load motor, voltage and current transmitter group, and magnetic powder brake, and has a complete detection circuit. By adopting the above structure, the utility model can effectively monitor the motor in real time, thereby greatly ensuring the normal operation of the motor and the safety and reliability of the power system.

The above-mentioned novel motor measuring device, wherein the main control unit adopts an ARM microprocessor, the data acquisition unit adopts a USB-V5.0 data acquisition card, the torque sensor adopts a JN338 torque sensor, and the voltage and current transmission The instrument is a self-made instrument.

The above-mentioned novel motor measurement device, wherein the main control unit adopts ARM microprocessor STM32F103, uses high-performance ARM® Cortex™-M3 (32-bit RISC core), the operating frequency is 72MHz, and the built-in high-speed memory (up to 128K words Sections of flash memory and 20K bytes of SRAM), rich enhanced I/O ports and peripherals connected to two APB buses.

The above-mentioned novel motor measuring device, wherein the upper computer software is a complete system based on LabVIEW including modules such as user login, data acquisition, data processing, data storage, and data callback.

In the above novel motor measurement device, the data acquisition unit further includes a current transmitter, a voltage transmitter, and a torque speed sensor connected to the measurement unit.

In the above-mentioned novel motor measurement device, the power supply unit monitoring circuit includes a battery voltage acquisition module, a battery current acquisition module, a battery temperature acquisition module and a battery main controller module, and the battery voltage acquisition module, battery current acquisition module and battery temperature acquisition module The signal output ends of the modules are respectively connected to the input ends of the main battery controller module, and at the same time, the two-way communication is performed between the main battery controller module and the main control unit through a wired communication module.

The beneficial effects of the utility model are: by adopting the above-mentioned structure, the utility model can effectively monitor the parameters of the motor in real time, thus ensuring that the motor works in a normal state, and can give a timely warning when there is a potential fault, which greatly ensures The normal operation of the motor and the safety and reliability of the power system.

Description of drawings

Figure 1 is a schematic diagram of the circuit structure of the motor measuring device.

Figure 2 is a functional diagram of the upper computer software of the motor measuring device.

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

As shown in FIG. 1 , a motor measuring device includes a main control unit, a measuring instrument unit, and a power supply unit. The main control unit includes the control chip and the upper computer software based on LabVIEW; the measuring instrument unit uses three self-made current transmitters and three voltage transmitters, torque speed sensors, data acquisition cards, and upper computer; the data acquisition unit Multiple signal input terminals of the system are respectively connected to the output terminals of the voltage transmission group, current transmission group, torque sensor, and torque sensor to complete the accurate collection of system data; the power supply unit includes data acquisition unit, main control The unit, the solar battery and the storage battery for the power supply of the torque speed sensor, and the three-phase contact voltage regulator for the power supply of the load motor, the voltage and current transmitter group, and the magnetic powder brake, and a complete detection circuit.

As shown in Figure 2, the host computer software of a motor measurement device, considering the overall function, the practical design of this theory can be divided into the following functional modules: the motor test module, to complete the motor test of the motor measurement system, mainly Including the no-load test, load test, stall test, torque speed test and other performance tests of the motor under test; the historical data callback module, in the process of measuring various electrical parameters of the motor, collects the test data as The specific format is stored in the specified directory, and the data of the motor under test is recalled in a specific format during the callback test data or display test waveforms, and the relevant data and waveforms during the test process are displayed in the form of waveform curves. The curve fitting method displays the characteristics of the motor and provides a basis for future analysis in an intuitive and vivid way; the data management module, in the measurement system, effective measurement data plays a very important role in the system. The data management module, its main function is to manage the display format of the data in the test process, so as to realize the diversification of data display; the system help module, the system help module, reflects whether a software is humanized to a large extent. The use of software is always a process from shallow to deep. Only by constantly exploring and learning can it be easier and faster to master. Software without system help function is like equipment without instruction manual, its development prospect can be imagined. Providing help to users quickly and accurately is the main function of this module.

By adopting the above structure, the utility model can carry out more comprehensive and effective real-time monitoring of motor parameters, specifically, three current transmitters and three voltage transmitters, torque speed sensors, data acquisition cards, and host computers , can determine the real-time parameters of the voltage, current, torque, and speed of the motor during operation, and record and save the data in time through the host computer, and calculate other parameters of the motor operation through the host computer software, such as power, power factor, etc. , In addition, when the motor runs incorrectly, the data collected through the data acquisition card enters the host computer software for identification and processing. After analysis, the motor power can be cut off in time through the relevant settings of the host computer program to ensure the minimum loss. By installing a battery monitoring circuit, it can ensure a safer, more stable and effective power supply to the motor measuring device, thus greatly ensuring the performance of the motor measuring device. When the monitored corresponding parameters are abnormal, there is a potential failure , the main control unit will control the system to stop and send out an error alarm signal in order to take further protective measures.

Further, for the above motor measuring device, wherein the main control unit adopts an ARM microprocessor, the data acquisition unit adopts a USB-V5.0 data acquisition card, the torque sensor adopts a JN338 torque sensor, and the voltage and current The transmitter is a self-made instrument.

As a further preference, for the above-mentioned motor measuring device, wherein the main control unit adopts the ARM microprocessor STM32F103, uses a high-performance ARM® Cortex™-M3 (32-bit RISC core), the frequency of work is 72MHz, and the built-in high-speed memory ( Up to 128K bytes of flash memory and 20K bytes of SRAM), rich enhanced I/O ports and peripherals connected to two APB buses.

As a further preference, for the above-mentioned motor measuring device, the host computer software is a complete system based on LabVIEW including modules such as user login, data acquisition, data processing, data storage, and data callback.

As a still further preference, for the above motor measuring device, the data acquisition unit further includes a current transmitter, a voltage transmitter, and a torque speed sensor connected to the measurement unit.

As a still further preference, for the above motor measurement device, the power supply unit monitoring circuit includes a battery voltage acquisition module, a battery current acquisition module, a battery temperature acquisition module and a battery main controller module, and the battery voltage acquisition module, battery current The signal output ends of the acquisition module and the battery temperature acquisition module are respectively connected to the input end of the main battery controller module, and the two-way communication between the main battery controller module and the main control unit is carried out through a wired communication module.

In summary, by adopting the above structure, the utility model can effectively monitor the parameters of the motor in real time, thereby ensuring that the motor works in a normal state, and can give a timely warning when there is a potential fault, which greatly ensures the normal operation of the motor and power system security and reliability.

Above in conjunction with the accompanying drawings, the preferred specific implementations and examples of the present utility model have been described in detail, but the present utility model is not limited to the above-mentioned implementations and examples, within the scope of knowledge possessed by those skilled in the art, it can also be Various changes are made under the premise of breaking away from the utility model design.

Claims (5)

1. A motor measuring device, wherein the main control unit includes a control chip and an upper computer based on LabVIEW; the measuring unit includes three self-made current transmitters and three voltage transmitters, torque speed sensors, data acquisition card, And the upper computer; the multiple signal input ends of the data acquisition unit are respectively connected with the output ends of the voltage transmission group, current transmission group, torque sensor, and torque sensor to complete the accurate collection of system data; the power supply unit includes Solar cells and storage batteries for powering the data acquisition unit, main control unit, and torque speed sensor, and a three-phase contact voltage regulator for powering the load motor, voltage and current transducer group, and magnetic powder brake, and a complete monitoring circuit. 2. A kind of motor measuring device as claimed in claim 1, characterized in that: the main control unit adopts an ARM microprocessor, the data acquisition unit adopts a USB-V5.0 data acquisition card, and the torque sensor A JN338 torque sensor is used, and the voltage and current transmitter is a self-made instrument. 3. A kind of motor measuring device as claimed in claim 1, characterized in that: said main control unit adopts ARM microprocessor STM32F103, uses high-performance ARM® Cortex-M3, the working frequency is 72MHz, built-in high-speed memory , rich enhanced I/O ports and peripherals connected to two APB buses. 4. A motor measurement device according to claim 1, characterized in that: the data acquisition unit further comprises a current transmitter, a voltage transmitter, and a torque speed sensor connected to the measurement unit. 5. A kind of motor measuring device as claimed in claim 1, characterized in that: the power supply unit monitoring circuit includes a battery voltage acquisition module, a battery current acquisition module, a battery temperature acquisition module and a battery master controller module, and the The signal output terminals of the battery voltage acquisition module, the battery current acquisition module and the battery temperature acquisition module are respectively connected to the input terminals of the battery main controller module, and at the same time, the battery main controller module and the main control unit are connected by wired The communication module performs two-way communication.