CN210377090U - Electric actuator speed measurement system based on USB and virtual instrument - Google Patents
Electric actuator speed measurement system based on USB and virtual instrument Download PDFInfo
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- CN210377090U CN210377090U CN201921339787.9U CN201921339787U CN210377090U CN 210377090 U CN210377090 U CN 210377090U CN 201921339787 U CN201921339787 U CN 201921339787U CN 210377090 U CN210377090 U CN 210377090U
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Abstract
The utility model discloses an electric actuator system of testing speed based on USB and virtual instrument, including host computer, serial ports to USB converter and the electric actuator triplex that is equipped with LabVIEW software. The utility model relates to an electric actuator speed measurement system based on USB and virtual instrument, which realizes the communication between an upper computer provided with LabVIEW software and a PIC single chip microcomputer in the electric actuator; the upper computer can control the positive and negative rotation and stop of a motor in the electric actuator by sending an instruction to the PIC singlechip; real-time speed information collected by a single-loop absolute encoder and sent by a PIC single chip microcomputer is received through a serial port-to-USB converter, and curve display of the real-time rotating speed of a motor in the operation of the electric actuator is achieved through LabVIEW software.
Description
Technical Field
The utility model relates to an electric actuator technical field that tests the speed, in particular to can utilize curve real-time display electric actuator's real-time rotational speed's of motor electric actuator system that tests the speed.
Background
The electric actuator is an important actuating mechanism in an industrial automation system, and is widely applied to important fields of chemical industry, petroleum, water and electricity, ships and the like, so that the stability of the electric actuator is very important. For manufacturers, the electric actuator needs to be strictly checked before leaving the factory, and the detection of the rotating speed of the electric actuator is an important link. With the continuous maturity of the variable frequency speed control technology, the application of regulating the rotating speed of the motor through variable frequency is increasingly wide. The problem that follows is that the measurement of the variable frequency speed regulation effect is difficult due to the complex structure of the electric actuator.
Most of the existing speed measuring devices for the electric actuators cannot perform real-time curve display on the rotating speed of a motor of the electric actuator, and only can perform simple measurement, so that the effect of variable frequency speed regulation cannot be intuitively judged. The existing speed measuring device for the electric actuator cannot judge the quality of variable frequency speed regulation, and can limit the control effect of the electric actuator in the using process to a certain extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a but the real-time curve shows electric actuator motor speed's electric actuator system that tests the speed based on USB and virtual instrument to the technical defect who exists among the prior art.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
an electric actuator speed measurement system based on a USB and a virtual instrument comprises an upper computer, a serial port-to-USB converter and an electric actuator; and the upper computer establishes communication with the electric actuator through the serial port-to-USB converter and performs information interaction.
The upper computer is a computer provided with LabVIEW software.
The serial port-to-USB converter is FB-U1001 in model.
The electric actuator comprises a PIC single chip microcomputer, an RS-422-to-RS-485 module, a single-coil absolute encoder and a motor, wherein the single-coil absolute encoder is BM-XMD-1 in a two-wire system and is an SSI signal.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses can utilize the host computer that is equipped with LabVIEW software can be through sending the instruction to the PIC singlechip, the motor among the control electric actuator just reversing and stopping, change the real-time speed information that the single circle absolute encoder that the USB converter sent was received to the PIC singlechip was gathered through the serial ports to realize the curve display to the real-time rotational speed of motor in the electric actuator operation through LabVIEW software. Through accurate measurement of the rotating speed of the electric actuator, possible problems in the variable-frequency speed regulation process are found, and therefore the quality of the electric actuator is improved.
Drawings
Fig. 1 is a structural block diagram of an electric actuator speed measurement system based on USB and LabVIEW.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the utility model discloses an electric actuator system that tests speed based on USB and virtual instrument includes:
the device comprises an upper computer provided with LabVIEW software, a serial port-to-USB converter and an electric actuator. The electric actuator comprises a PIC single chip microcomputer, an RS-422-to-RS-485 module, a single-ring absolute encoder and a motor. The upper computer provided with the LabVIEW software can send instructions to the PIC singlechip through the serial port-to-USB converter to control the positive and negative rotation and stop of the motor in the electric actuator, receive real-time speed information collected by a single-ring absolute encoder sent by the PIC singlechip, and realize curve display of the real-time rotating speed of the motor in the operation of the electric actuator through the LabVIEW software.
The electric actuator adopts a BM-XMD-1 single-loop absolute encoder to acquire the rotating speed of the motor and transmits the rotating speed to a PIC single chip microcomputer in the electric actuator.
The serial port-to-USB converter is FB-U1001 in model, and serial port equipment can be connected to a computer through a USB interface of the computer or a workstation, so that the function of converting the USB to the serial port or the serial port to the USB is realized. The FB-U1001 type USB-RS 485 converter is easy to install and use, the FB-U1001 does not need an external power supply, an interface mode is directly set in equipment attributes, a switch is not needed, the FB-U1001 type USB-RS 485 converter is compatible with a USB 2.0, a needle type DB9 and a USB connector, and the communication between an upper computer and a PIC single chip microcomputer in an electric actuator can be established when the serial port speed can reach 921.6 kbps.
The upper computer provided with the LabVIEW software is communicated with a PIC single chip microcomputer in the electric actuator through a serial port-to-USB converter, sends instructions to the PIC single chip microcomputer through the serial port-to-USB converter to control the positive and negative rotation and stop of a motor in the electric actuator, receives real-time speed information collected by a single-turn absolute encoder sent by the PIC single chip microcomputer, analyzes the information of the rotating speed of the motor, performs digital system conversion, and then performs real-time curve display on data by using a oscillogram.
The system of the utility model is provided with a PIC singlechip in a LabVIEW upper computer which is communicated with an electric actuator through a serial port-to-USB converter; the PIC singlechip is communicated with a single-ring absolute encoder for outputting SSI signals through an RS-422 to RS-485 conversion module, so that the upper computer is ensured to acquire real-time rotating speed information of a motor in the electric actuator and perform real-time curve display.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. An electric actuator speed measurement system based on a USB and a virtual instrument comprises an upper computer, a serial port-to-USB converter and an electric actuator; the upper computer establishes communication with the electric actuator through the serial port-to-USB converter and performs information interaction; the electric actuator comprises a PIC singlechip, an RS-422-to-RS-485 module, a single-ring absolute encoder and a motor; the upper computer is a computer provided with LabVIEW software; the upper computer can send instructions to the PIC single chip microcomputer through the serial port-to-USB converter to control the positive and negative rotation and stop of the motor in the electric actuator, receive real-time speed information collected by the single-loop absolute encoder and sent by the PIC single chip microcomputer, and realize curve display of the real-time rotating speed of the motor in the operation of the electric actuator through LabVIEW software.
2. The USB and virtual instrument based electric actuator speed measurement system of claim 1, wherein the serial to USB converter is FB-U1001.
3. The USB and virtual instrument based electric actuator velocity measurement system of claim 1, wherein the single turn absolute encoder model is BM-XMD-1, a two wire system, SSI signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921339787.9U CN210377090U (en) | 2019-08-19 | 2019-08-19 | Electric actuator speed measurement system based on USB and virtual instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921339787.9U CN210377090U (en) | 2019-08-19 | 2019-08-19 | Electric actuator speed measurement system based on USB and virtual instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210377090U true CN210377090U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921339787.9U Active CN210377090U (en) | 2019-08-19 | 2019-08-19 | Electric actuator speed measurement system based on USB and virtual instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210377090U (en) |
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2019
- 2019-08-19 CN CN201921339787.9U patent/CN210377090U/en active Active
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