CN218600594U

CN218600594U - Automatic correction and inspection system of encoder

Info

Publication number: CN218600594U
Application number: CN202223288579.5U
Authority: CN
Inventors: 黄威; 徐艳超; 高人翔; 李秋辉; 王成; 赖小明; 禹建勇
Original assignee: Nanjing Pancon Microgrid Technology Co ltd; Nanjing Keyuan Intelligent Technology Group Co ltd
Current assignee: Nanjing Pancon Microgrid Technology Co ltd; Nanjing Keyuan Intelligent Technology Group Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-03-10
Anticipated expiration: 2032-12-08

Abstract

The utility model discloses an automatic correction and inspection system of an encoder, which comprises a stepping motor, a clamping device, a stepping motor driving system, a PLC, an encoder testing system, an HMI display screen and a code scanning gun; the stepping motor is connected with the encoder to be tested through the clamping device; the encoder testing system is connected with the stepping motor through the stepping motor driving system; the HMI display screen is respectively connected with the PLC, the code scanning gun and the encoder testing system; the encoder test system is in communication connection with the encoder to be tested. The utility model discloses can realize the true simulation service environment of different speeds to but a plurality of encoders of real-time synchronous detection have improved detection efficiency and reliability greatly.

Description

Automatic correction and inspection system of encoder

Technical Field

The utility model relates to an automatic calibration and inspection system of encoder.

Background

An encoder is a device that can formulate and convert a signal (e.g., a bit stream) or data into a form of signal that can be communicated, transmitted and stored. At present, along with the increase of application requirements, the number of turns and the precision of the encoder are also promoted year by year along with the development depth, and meanwhile, the requirement on the reliability of the encoder is higher and higher. The currently used inspection tools have fewer inspection quantities at the same time, cannot truly simulate the use environment at different speeds, cannot count and sort inspection data, and need to be improved.

Disclosure of Invention

The utility model aims at providing an automatic inspection system that rectifies of encoder in order to solve the problem that above-mentioned prior art exists.

In order to achieve the aim, the utility model provides an automatic correction and inspection system of an encoder, which comprises a stepping motor, a clamping device, a stepping motor driving system, a PLC, an encoder testing system, an HMI display screen and a code scanning gun; the stepping motor is connected with the encoder to be tested through the clamping device; the encoder testing system is connected with the stepping motor through a stepping motor driving system; the HMI display screen is respectively connected with the PLC, the code scanning gun and the encoder testing system; the encoder test system is in communication connection with the encoder to be tested.

In order to realize the purpose that detects many encoders simultaneously, the utility model discloses the automatic checkout system that rectifies of encoder adopts a plurality of encoder test systems, step motor. Each encoder test system is connected with a corresponding stepping motor through a corresponding stepping motor driving system; each stepping motor clamps the corresponding encoder to be tested; and each encoder system is respectively in communication connection with the corresponding encoder to be tested.

Further, in some embodiments, the present invention employs a 24VDC switching power supply to provide power to the entire system.

The encoder to be tested is connected with the encoder testing system and is communicated through 485, and connection state detection, coded data reading, data calculation and encoder calibration instruction issuing are achieved.

Sweep a yard rifle and be connected through bluetooth and HMI display screen communication, realize the encoder that awaits measuring and leave factory number, production batch number etc. data acquisition and storage function.

The stepping motor driving system is communicated with the encoder testing system through the USART, so that real-time position acquisition of the motor, accurate stepping position control and different-speed sectional testing are realized.

Adopt modbusRTU communication between PLC and the HMI display screen, realize issuing and equipment state upload function of control signal such as power, radiator fan, ac contactor.

And the encoder test system and the HMI display screen adopt ModbusRTU communication to realize the issuing function of real-time test data acquisition, instruction and configuration.

The stepping motor and the encoder to be tested are connected through the clamping device, real-time transmission is achieved, and testing precision is guaranteed.

Compared with the prior art, the utility model has the following advantages:

the utility model discloses utilize encoder test system and step motor, realize the true simulation service environment of different speeds to but a plurality of encoders of real-time synchronous detection have improved detection efficiency and reliability greatly.

The utility model discloses the interface that accessible HIM display screen provided sets up test speed, stop position etc to send the encoder test system to the setting parameter, test and rectify the encoder with established test flow, judge whether qualified test data index is in real time. And will upload the test information to HMI display screen in real time, HMI display screen is after the test is accomplished, with product serial number, production batch number, test time, tester's production relevant information unified record and save, relevant personnel can consult, save, derive the information with information interaction, it is more convenient to use.

The utility model discloses utilize encoder test system control step motor, will detect that the precision improves to single circle resolution ratio 0.1 °, speed by 5RPM ~ 3000RPM can set up, can set up final stop position, can show in real time and detect state, can detect 25 encoders simultaneously, and detect and can derive, improved detection efficiency and reliability greatly.

Drawings

Fig. 1 is a block diagram of an automatic calibration and inspection system of an encoder according to the present invention;

FIG. 2 is a circuit diagram of the encoder testing system of FIG. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the utility model relates to an automatic calibration inspection system of encoder, include HMI display screen, PLC, encoder test system, step motor and actuating system, ac contactor, earth leakage protection switch, 24VDC switching power supply, pilot lamp, sweep yard rifle and wait to detect the encoder.

PLC, encoder test system, sweep a yard rifle and all link to each other with the HMI display screen, step motor and actuating system, pilot lamp, quilt encoder all link to each other with encoder test system, and ac contactor is connected with PLC, and 24VDC switching power supply provides the power for entire system.

According to the testing requirements of the encoder, power supply control logic is written in the PLC, a checking flow is written in the encoder testing system, the encoder is subjected to full-stroke verification, and a display interactive interface is written in the HMI display screen. And setting test parameters in the HMI display screen, initiating a test instruction, executing a full-stroke test by the encoder test system according to the parameters and the instruction, acquiring and comparing test data in real time, and judging whether the test index is qualified according to a comparison result.

The utility model discloses rectify inspection system and can realize carrying out instruction correction, encoder gear bite to the encoder and detect, assembly error detection, encoder defect detection etc. and support to sweep a yard rifle and type into production batch number, product serial number and tester information etc. can preserve and derive the statement to information such as testing result.

The utility model discloses whole correction inspection system can use 25 encoder test systems as shown in figure 2 simultaneously, and mutual independence work carries out the data acquisition and the processing of the encoder that awaits measuring. The encoder testing system adopts an embedded real-time operating system, and maintains encoder testing work such as acquisition, testing, processing, driving and the like by 4 tasks. The code value of the encoder to be tested is read through the encoder testing system, whether the encoder is consistent with a preset action value or not is judged in real time, and information such as an error value, an error state and a software version in the encoder is judged and processed through 485 communication.

And data reading, instruction issuing and parameter setting are carried out on the encoder test system through the modbus through the HMI display screen, real-time data preview is realized, and test results are stored.

And the HMI display screen is used for reading data and issuing instructions to the PLC through the modbus, so that the power supply of the system is controlled.

When the whole system is powered on, the system corrects the internal communication, the action condition of the stepping motor and the internal high-precision code, and enters an operation interface after the correction is finished. Before formal detection, the system calls the speed parameter set last time, and requires a user to use an account number to log in (code scanning can be used for logging in), and a code scanning gun is used for correspondingly recording production batch numbers, test stations and product codes of all encoders to be detected one by one. In the testing process, a user can obtain basic information such as real-time testing progress, testing speed, product tolerance, testing results and the like through the HMI display screen. After the test is finished, the system automatically stores the information, provides an output interface, and can be exported to a storage medium or imported to a production management system through a USB.

The system provides a self-checking method, a user can carry out the self-checking according to the instruction of the HMI screen, and after the checking is finished, the system outputs a checking record for exporting the reservation.

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 modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. An automatic correction and inspection system of an encoder is characterized by comprising a stepping motor, a clamping device, a stepping motor driving system, a PLC (programmable logic controller), an encoder testing system, an HMI (human machine interface) display screen and a code scanning gun; the stepping motor is connected with the encoder to be tested through the clamping device; the encoder testing system is connected with the stepping motor through a stepping motor driving system; the HMI display screen is respectively connected with the PLC, the code scanning gun and the encoder testing system; and the encoder test system is in communication connection with the encoder to be tested.

2. The system for automated calibration verification of an encoder according to claim 1, wherein the encoder test system and the stepping motor are provided in plurality; each encoder test system is connected with a corresponding stepping motor through a corresponding stepping motor driving system; each stepping motor clamps the corresponding encoder to be tested respectively; and each encoder system is respectively in communication connection with the corresponding encoder to be tested.

3. The system of claim 2, further comprising a 24VDC power supply for powering the entire system.

4. The system of claim 3, wherein the encoder test system is communicatively coupled to the encoder under test via 485; the HMI display screen is in communication connection with the PLC through Bluetooth; the encoder test system is in communication connection with the stepping motor drive system through a USART; and the HMI display screen communicates with the PLC and the encoder test system by adopting ModbusRTU.