KR102573158B1 - Portable displacement type vibration sensor auto calibration system - Google Patents

Abstract

A portable vibration sensor automatic inspection device is disclosed. The portable vibration sensor automatic testing device includes a base portion having a horizontal upper surface; a sensor mounting jig disposed on one side of an upper surface of the base unit and having a vibration sensor to be inspected detachably provided; a gap measuring plate disposed such that one surface faces the sensor mounting jig; Gap measurement that is disposed to face the other surface of the gap measurement plate at an opposite side of the sensor mounting jig with the gap measurement plate interposed therebetween, and linearly moves the gap measurement plate in a direction approaching and away from the sensor mounting jig plate transfer unit; a distance measuring sensor measuring a separation distance between the gap measuring plate and the vibration sensor mounted on the sensor mounting jig; and controlling the gap measurement plate transporter to set a zero point so that the gap measurement plate comes in contact with or approaches the vibration sensor, and controls the gap measurement plate transporter to gradually distance the gap measurement plate from the vibration sensor after setting the zero point. , The distance measurement value output from the distance measurement sensor and the voltage value output from the vibration sensor are input, and the sensitivity of the vibration sensor according to the distance traveled by the gap measurement plate based on the distance measurement value and the voltage value It is characterized in that it comprises a control unit configured to measure and output.

Description

Portable vibration sensor automatic inspection device {PORTABLE DISPLACEMENT TYPE VIBRATION SENSOR AUTO CALIBRATION SYSTEM}

The present invention relates to a vibration sensor inspection device, and more particularly, to a portable vibration sensor automatic inspection device capable of accurately and quickly inspecting a vibration sensor for abnormalities.

As a conventional vibration sensor inspection device, there is a registered patent No. 10-1430370 "Static Calibration Device for Displacement Sensor Using Gravity".

In this patent, when the automatic selection switch is selected and the zero adjustment switch is pressed, a signal is applied from the control unit to the drive unit, the drive unit advances the reference measurement plate toward the measurement unit, and when the displacement sensor mounted on the measurement unit and the reference measurement plate touch, The driving part stops the forward movement of the reference measuring plate and checks the result of the zero point adjustment. When the zero point is adjusted, the value is displayed as zero on the micro gauge. When moving backward by a certain distance, the measuring unit measures the distance between the reference measuring plate and the displacement sensor at that time.

However, this patent has a problem in that it is difficult to accurately measure the zero point adjustment and movement distance of the reference measuring plate because the microgauge is mechanical.

In addition, there is a problem in that it is difficult to accurately determine whether or not the sensor is abnormal because there is no comparison function between the reference output value of the sensor according to the moving distance of the reference measuring plate, that is, the output value output from the displacement sensor based on the moving distance of the reference measuring plate.

In addition, since the inclined base and the device are bulky and heavy, it is not easy to carry, and accordingly, there is a problem in that it is difficult to immediately apply the displacement sensor to the field where it is used.

Therefore, the problem to be solved by the present invention is to reduce the movement error of the gap measuring plate, thereby enabling precise inspection of the vibration sensor and improving inspection reliability, quickly inspecting the vibration sensor, and quickly checking the presence or absence of abnormality of the vibration sensor. It is to provide a portable vibration sensor automatic inspection device that is easy to carry.

A portable vibration sensor automatic inspection device according to an embodiment of the present invention includes a base portion with a horizontal upper surface; a sensor mounting jig disposed on one side of an upper surface of the base unit and having a vibration sensor to be inspected detachably provided; a gap measuring plate disposed such that one surface faces the sensor mounting jig; Gap measurement that is disposed to face the other surface of the gap measurement plate at an opposite side of the sensor mounting jig with the gap measurement plate interposed therebetween, and linearly moves the gap measurement plate in a direction approaching and away from the sensor mounting jig plate transfer unit; a distance measuring sensor measuring a separation distance between the gap measuring plate and the vibration sensor mounted on the sensor mounting jig; and controlling the gap measurement plate transporter to set a zero point so that the gap measurement plate comes in contact with or approaches the vibration sensor, and controls the gap measurement plate transporter to gradually distance the gap measurement plate from the vibration sensor after setting the zero point. , The distance measurement value output from the distance measurement sensor and the voltage value output from the vibration sensor are input, and the sensitivity of the vibration sensor according to the distance traveled by the gap measurement plate based on the distance measurement value and the voltage value It is characterized in that it comprises a control unit configured to measure and output.

In one embodiment, the control unit may be configured to input an allowable error range of the measurement sensitivity of the vibration sensor in advance, and measure the error range of the measurement sensitivity of the vibration sensor and output the measured error range. .

In one embodiment, a communication port for electrically connecting an external terminal is provided on one side of an upper surface of the base unit, and the control unit may output an inspection result of the vibration sensor to an external terminal connected through the communication port.

In one embodiment, the sensor mounting jig may be detachably configured on the upper surface of the base part.

In one embodiment, the mobile box further includes a storage unit and a cover unit, the control unit and the base unit are accommodated in the storage unit, the sensor mounting jig, the gap measurement plate, the gap measurement plate transfer unit and the distance The measurement sensor may be housed in the portable box when the lid is closed.

In one embodiment, the gap measuring plate transfer unit may include a guide rail provided on an upper surface of the base unit; a moving block seated on the guide rail and slidably provided along the guide rail; A screw shaft screwed to the moving block; and a servo motor connected to the screw shaft to rotate the screw shaft, wherein the gap measurement plate is coupled to the moving block and moves along the guide rail together with the moving block.

According to the portable vibration sensor automatic inspection device according to the present invention, it is possible to precisely inspect the vibration sensor by reducing the movement error of the gap measuring plate and improve the inspection reliability, quickly inspect the vibration sensor, and check whether the vibration sensor is abnormal can be checked quickly, and has the advantage of being easy to carry.

1 is a perspective view showing the configuration of a portable vibration sensor automatic inspection device according to an embodiment of the present invention.
Figure 2 is a plan view of Figure 1;
FIG. 3 is a partially enlarged perspective view of FIG. 1 .
4 is a diagram illustrating an inspection report output from a control unit regarding the presence or absence of an abnormality in a vibration sensor to be inspected.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a portable vibration sensor automatic inspection device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, it should be understood that this is not intended to limit the present invention to the specific disclosed form, and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a perspective view showing the configuration of an automatic inspection device for a portable vibration sensor according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a partially enlarged perspective view of FIG. 1, and FIG. It is a diagram illustrating an inspection report output from the control unit regarding the presence or absence of abnormalities in the vibration sensor to be inspected.

1 to 3, the portable vibration sensor automatic inspection device according to an embodiment of the present invention includes a carrying box 110, a base part 120, a sensor mounting jig 130, a gap measuring plate 140, It may include a gap measurement plate transfer unit 150, a distance measurement sensor 160, and a controller (not shown).

The carrying box 110 includes a storage part 111 and a cover part 112 . The cover part 112 may be connected to one side of the accommodating part 111 through a hinge to cover the accommodating part 111 . For example, the portable box 110 may be provided in the form of a rectangular box in the shape of a rectangular parallelepiped.

The base part 120 has a horizontal upper surface and is accommodated in the accommodating part 111 . For example, the upper surface of the base part 120 may have a rectangular shape.

The sensor mounting jig 130 is disposed on one side of the upper surface of the base part 120 and is provided so that the vibration sensor 10 to be inspected is detachable. For example, the sensor mounting jig 130 may be equipped to mount the rod-type vibration sensor 10 . Alternatively, although not shown, a block type vibration sensor 10 may be provided to be mountable. In addition, the sensor mounting jig 130 may be detachably provided on the upper surface of the base part 120 .

The gap measuring plate 140 is disposed on the base part 120 so that one surface faces the sensor mounting jig 130 . That is, the gap measurement plate 140 is disposed so that both sides are perpendicular to the upper surface of the base part 120 and one side faces the sensor mounting jig 130 .

The gap measuring plate transfer part 150 faces the other side of the gap measuring plate 140 so as to place the gap measuring plate 140 between the sensor mounting jig 130 and the other side of the sensor mounting jig 130. is arranged so that the gap measuring plate 140 can be linearly moved in a direction approaching and moving away from the sensor mounting jig 130 .

Hereinafter, for convenience of description, the surface facing the sensor mounting jig 130 among both sides of the gap measuring plate 140 will be described as a "front" and the surface facing the gap measuring plate transfer unit 150 will be referred to as a "rear side". " to be explained.

For example, the gap measuring plate transfer unit 150 may be configured in the form of a ball screw. In this case, the gap measuring plate conveying part 150 is seated on the guide rail 151 provided on the upper surface of the base part 120 and the guide rail 151 to be slidably provided along the guide rail 151 It may include a moving block 152, a screw shaft 153 screwed to the moving block 152, and a servo motor 154 connected to the screw shaft 153 to rotate the screw shaft 153. The gap measuring plate 140 is coupled to the moving block 152 and can be moved along the guide rail 151 together with the moving block 152 .

The distance measuring sensor 160 measures the separation distance between the gap measuring plate 140 and the vibration sensor 10 mounted on the sensor mounting jig 130 . For example, the distance measurement sensor 160 is disposed on one side of the sensor mounting jig 130, emits a laser toward the front of the gap measurement plate 140 and receives the laser reflected from the front to measure the distance It may be a laser sensor that

The control unit may be accommodated in the accommodating unit 111 of the carrying box 110, and may be electrically connected to the gap measurement plate transfer unit 150, the distance measurement sensor 160, and the vibration sensor 10.

In addition, the control unit controls the gap measurement plate transfer unit 150 to set the zero point by bringing the gap measurement plate 140 into or close to the vibration sensor 10, and after setting the zero point, the gap measurement plate ( 140) may control the gap measuring plate transporter 150 so that it gradually moves away from the vibration sensor 10.

In addition, the control unit receives a distance measurement value output from the distance measurement sensor 160 and a voltage value output from the vibration sensor 10, and the gap measurement plate ( 140) may be configured to measure and output the sensitivity of the vibration sensor 10 according to the moved distance.

In addition, the control unit may input an allowable error range of the measurement sensitivity of the vibration sensor 10 of the measurement target in advance, measure the error range for the measurement sensitivity of the vibration sensor 10, and output the measured error range. can be configured.

On the other hand, a communication port 170 for electrically connecting an external terminal such as a tablet or a notebook may be provided on one side of the upper surface of the base part 120, and the control unit is externally connected through the communication port 170. A test result of the vibration sensor 10 may be output to the terminal.

Hereinafter, a process of inspecting the vibration sensor 10 using the portable vibration sensor automatic inspection device according to an embodiment of the present invention will be described.

First, the control unit controls the transfer unit 150 of the gap measurement plate 140 to move the gap measurement plate 140 toward the vibration sensor 10 mounted on the sensor mounting jig 130 . At this time, the gap measurement plate 140 may be brought into close contact with the probe of the vibration sensor 10 and the close contact state may be set as a zero point.

After setting the zero point, the control unit controls the gap measurement plate transfer unit 150 to move the gap measurement plate 140 so that the gap measurement plate 140 is gradually separated from the vibration sensor 10 . For example, the control unit may preset a stopping point at which the gap measurement plate 140 moves and stops at a predetermined distance or at a predetermined time interval. In this case, the gap measurement plate 140 stops at each preset stopping point and then moves again. can Each stop point may be determined based on a distance measurement value input in real time through the distance measuring sensor 160, and the gap measuring plate 140 may be stopped at each stop point.

When the gap measuring plate 140 stops at each stop point, the distance measurement value for the distance between the gap measuring plate 140 and the vibration sensor 10 at each stop point is input from the distance measuring sensor 160 to the control unit. At the same time, the voltage value of the vibration sensor 10 at each stop point is input to the controller.

The control unit measures the sensitivity of the vibration sensor 10 at each stop point based on the distance measurement value and the voltage value at each stop point, and when the sensitivity measurement of the vibration sensor 10 is completed at the last stop point, FIG. 4 As shown in Fig. 1, judgment data that determines the inspection of the vibration sensor 10 according to the output DC (v), measurement distance (mm), measurement sensitivity, error, and error at each stop point as Pass or Fail, and Results can be output to an external terminal as a chart.

Using the portable vibration sensor automatic inspection device according to an embodiment of the present invention, it is possible to accurately set and precisely control the moving distance of the gap measurement plate 140 through the distance measurement sensor 160 and the control unit, and to measure the gap Since the movement distance of the plate 140 is precisely controlled, a movement error of the gap measurement plate 140 is reduced, thereby enabling precise inspection of the vibration sensor 10 and improving inspection reliability.

In addition, since each component is accommodated in the carrying box 110, it has the advantage of being easy to carry, and has the advantage of being able to quickly inspect the vibration sensor 10 immediately at the site where the vibration sensor 10 is used.

In addition, when the movement of the gap measurement plate 140 is finally stopped, that is, when the gap measurement plate 140 stops at the maximum movement distance, the sensitivity of the vibration sensor 10 at each stop point preset by the control unit In summary, since the final inspection result of the vibration sensor 10 is configured to be output immediately, there is an advantage in quickly checking whether or not there is an abnormality in the vibration sensor 10 .

The description of the presented embodiments is provided to enable any person skilled in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

Claims (6)

Base portion 120 with a horizontal top surface;
a sensor mounting jig 130 disposed on one side of an upper surface of the base part 120 and provided to detach the vibration sensor 10 to be inspected;
a gap measuring plate 140 disposed such that one surface thereof faces the sensor mounting jig 130;
The sensor mounting jig ( 130), the gap measurement plate transfer unit 150 linearly moving in a direction approaching and moving away from it;
a distance measuring sensor 160 for measuring a separation distance between the gap measuring plate 140 and the vibration sensor 10 mounted on the sensor mounting jig 130; and
A zero point is set by controlling the gap measuring plate transporter 150 so that the gap measuring plate 140 comes into contact with or approaches the vibration sensor 10, and after setting the zero point, the gap measuring plate 140 moves the vibration sensor ( 10), the gap measurement plate transfer unit 150 is controlled to gradually move away from the distance measurement sensor 160 and the voltage value output from the vibration sensor 10 are input, and the distance measurement and a control unit configured to measure and output the sensitivity of the vibration sensor 10 according to the moving distance of the gap measurement plate 140 based on the value and the voltage value,
The control unit is configured to input an allowable error range of the measurement sensitivity of the vibration sensor 10 in advance, and the control unit measures the error range for the measurement sensitivity of the vibration sensor 10 and outputs the measured error range,
During the inspection of the vibration sensor 10, the control unit may preset a stop point at which the gap measurement plate 140 moves from the zero point and stops at a certain distance or at a certain time interval, and each stop point is It is determined based on the distance measurement value input in real time through the distance measurement sensor 160, and the gap measurement plate 140 is moved again after stopping at each stop point, and the gap measurement plate 140 If it stops at the stop point, the vibration sensor 10 at each stop point based on the distance measurement value and the voltage value for the distance between the gap measuring plate 140 and the vibration sensor 10 at each stop point Sensitivity is measured, and when the sensitivity measurement of the vibration sensor 10 is completed at the last stop point, the vibration sensor according to the output DC (v), measurement distance (mm), measurement sensitivity, error, and error at each stop point It is characterized by outputting the judgment data and results that make the judgment of the inspection of (10) Pass or Fail to an external terminal as a chart,
Portable vibration sensor automatic inspection device. delete According to claim 1,
A communication port 170 for electrically connecting an external terminal is provided on one side of the upper surface of the base part 120,
Characterized in that the controller outputs the inspection result of the vibration sensor 10 to an external terminal connected through the communication port 170,
Portable vibration sensor automatic inspection device. According to claim 1,
Characterized in that the sensor mounting jig 130 is detachably configured on the upper surface of the base part 120,
Portable vibration sensor automatic inspection device. According to claim 1,
Further comprising a carrying box 110 including a storage unit 111 and a cover unit 112,
The controller and the base part 120 are accommodated in the accommodating part 111,
The sensor mounting jig 130, the gap measuring plate 140, the gap measuring plate transfer part 150, and the distance measuring sensor 160 are accommodated in the mobile box 110 when the cover part 112 is closed. characterized in that,
Portable vibration sensor automatic inspection device. According to claim 1,
The gap measuring plate transfer unit 150,
a guide rail 151 provided on an upper surface of the base part 120;
a moving block 152 seated on the guide rail 151 and slidably provided along the guide rail 151;
A screw shaft 153 screwed to the moving block 152; and
A servo motor 154 connected to the screw shaft 153 to rotate the screw shaft 153,
Characterized in that the gap measuring plate 140 is coupled to the moving block 152 and moves along the guide rail 151 together with the moving block 152.
Portable vibration sensor automatic inspection device.