KR19980040226A - Motor Inspection System Using Computer System - Google Patents

Abstract

The present invention relates to a motor inspection system using a computer system.

The motor inspection system includes a computer-based motor inspection system that amplifies a key input section including a motor inspection execution key and an output signal of the key input section at a predetermined amplification ratio, thereby creating a test start signal, and also amplifies its own M lock signal. Jig set and jig set for rotating the motor for inspection so as to correspond to the output signal of the amplifying unit for outputting each of the amplifying unit, the motor starting unit for outputting the motor driving signal by the test start signal and the MLOCK signal output from the amplifying unit, and the jig set. A displacement unit that converts and outputs information about the rotation period of the motor mounted in the periodic signal into a periodic signal, an oscilloscope that displays and outputs the output signal in the form of a displacement, and measures the current and frequency applied to the inspection motor from the motor moving unit. Current detector and frequency shift detector, frequency detector and oscillator A computer system connected to a scope and a GP-IB cable to communicate with each other, and output a control signal for controlling the output of the amplifier, and noise included in the M LOCK signal connected to the output of the amplifier and output from the amplifier. It is composed of the M LOCK noise detector which outputs to the computer system.

Description

Motor Inspection System Using Computer System

1 is a block diagram of a motor inspection system using a computer system according to the present invention.

* Explanation of symbols for main parts of the drawings

11 key input, 12 amplifier, 13 motor moving part, 14 jig set, 15 computer system, 16 current detector, 17 frequency fluctuation detection part, 18 oscilloscope, 19 displacement part, 20 M lock noise Detector

The present invention relates to a motor inspection system using a computer system, and more particularly, to a motor inspection system for inspecting characteristics of a scanner motor using a computer system with a laser beam printer (LBP).

Conventionally, to check the characteristics of the LBP scanner motor, the inspector directly checks and records the analog ammeter provided in the motor inspection jig set, and also checks the RRO value with the connected oscilloscope of the motor inspection jig set, and the frequency detector (Wow Flutter). In addition, the rotational speed per minute (RPM) of the motor was examined, and the noise of the M LOCK signal applied to the motor moving part was visually inspected by the inspector. Therefore, in order to determine the defective state of the motor, the inspector judged the characteristics of the inspected motor based on the specification.

In the conventional inspection method, the inspector has to inspect the measuring instruments one by one, and thus the inspection point is inconsistent, and thus the reliability is poor as an accurate judgment data, and there is a defect that the inspector must have to check visually.

An object of the present invention is to provide a motor inspection system using a computer system that can automatically inspect the motor by using a conventional computer system to solve such a disadvantage.

In order to achieve the above object, the present invention provides a key input unit having a motor test execution key, and amplifies the output signal of the key input unit at a predetermined amplification ratio, thereby creating a test start signal and amplifying the M LOCK signal generated by itself. An amplifying unit for outputting each, a motor moving unit for outputting a motor driving signal by the test start signal and the M LOCK signal output from the amplifying unit, and a jig set for rotating the inspection motor to correspond to the output signal of the motor moving unit. And a displacement unit for converting and outputting information about a rotation period of the inspection motor mounted on the jig set into an electrical signal, an oscilloscope for displaying and outputting the output signal of the displacement unit in a waveform form, and the inspection at the drive movable unit. A frequency variation detector for detecting a change in frequency applied to the motor for driving the motor A current detecting unit for detecting a value of the current applied to the inspection motor by the moving unit, and a motor operating control signal applied to the amplifying unit, and connected to the current detecting unit, the frequency variation detecting unit, and the oscilloscope by mutual communication cables. And a computer system for communicating.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration, operation and effects of the present invention.

1 is a block diagram of a motor inspection system using a computer system according to the present invention.

Referring to FIG. 1, a motor inspection system using a computer according to the present invention amplifies an output signal of a key input section 11 and a key input section 11 having a motor test execution key at a predetermined amplification ratio and starts a test. Amplification unit 12 for generating a signal and amplifying the M LOCK signal, which is generated by itself, and outputting the motor, and a motor driving unit 13 for outputting a motor driving signal by the test start signal and the M LOCK signal output from the amplifying unit 12. ), A displacement for converting the jig set 14 which rotates the inspection motor so as to correspond to the output signal of the motor movable part 13, and the information about the rotation period of the motor mounted on the jig set 14 by converting it into a periodic signal and outputting it. The unit 19, an oscilloscope 18 for displaying the output signal of the displacement unit 19 in the form of a waveform, and a current detector 16 for measuring the current and frequency applied from the motor moving unit 13 to the test motor. And frequency The control unit 17, the current detecting unit 16, the frequency changing unit 17 and the oscilloscope 19 are connected to each other by a GP-IB cable to communicate with each other, and control for controlling the output of the amplifying unit 12. A computer system 15 for outputting a signal and an M LOCK noise detector connected to an output terminal of the amplifier 12 and outputting noise contained in the M LOCK signal output from the amplifier 12 to the computer system 15 ( 20).

The operation of the motor inspection system using the computer system of such a configuration is as follows.

When the inspection motor is mounted on the jig set 14 and the motor inspection execution key provided in the key input unit 11 is selected, the amplification unit 12 detects this and amplifies the inspection start signal and the self-made M LOCK signal. Print each. The motor moving unit 13 detects information on the rotational state of the motor mounted on the jig set 14 so as to correspond to the test start signal and the M LOCK signal, converts the information into an electrical signal, and applies it to the oscilloscope 18. Therefore, the user can observe the state of the rotation cycle of the test motor as a waveform. At the same time, the current detector 16 and the frequency fluctuation detector 17 detect the current value and the frequency fluctuation value provided from the motor moving part 13 to the test motor, respectively.

Since the computer system 15 is connected to the current detector 16, the frequency fluctuation detector 17, and the oscilloscope 18 by GP-IB cables so as to communicate with each other, the detected results are all microcomputers in the computer system 15. Is stored in the monitor and is displayed on a monitor provided in the computer system 15 in a set format in comparison with a reference value.

In addition, the noise detection value detected by the M LOCK noise detection unit 20 is also compared with the reference value in the microcomputer in the computer system 15, and the result is also displayed on the monitor in the set format.

According to the present invention as described above, since the characteristics of the LBP scanner motor and similar motors can be automatically inspected using a computer system, more reliable test results can be obtained, and the computer system can be inspected even if the inspector is not present. Setting the conditions and time has the advantage of obtaining the desired test results.

Claims (2)

A key input unit including a motor test execution key, an amplification unit for amplifying an output signal of the key input unit at a predetermined amplification ratio to generate a test start signal, and amplifying and outputting a self-made M LOCK signal; A motor moving unit for outputting a motor driving signal by the output test start signal and the M lock signal, a jig set for rotating the test motor to correspond to an output signal of the motor moving unit, and a test motor mounted to the jig set; A displacement unit for converting and outputting information about a rotation period of the signal into an electrical signal, an oscilloscope for displaying and outputting the output signal of the displacement unit in a waveform form, and detecting a change in frequency applied by the drive moving unit to the inspection motor. The frequency fluctuation detection section and all the voltages applied to the inspection motor by the drive movable section. And a computer system for applying a motor operation control signal to the amplifying unit and for communicating with the current detecting unit, the frequency variation detecting unit, and the oscilloscope via a communication cable. Motor inspection system using a computer system characterized in that. And the M LOCK noise detector for inputting the M LOCK signal output from the amplifier to detect the noise included in the M LOCK signal and output the noise to the computer system. Motor inspection system using computer system.