KR20240015790A - Testing apparatus for speed measurement instrument and testing method for speed measurement instrument - Google Patents

Abstract

The present invention provides a test device for an object detection type speed meter. The testing device for the object detection type speed meter includes a plurality of motor units having a rotation axis on which a rotating body on which a target is formed is installed; a control unit that rotates the rotation axis of each of the plurality of motor units; A speed measuring unit that individually measures the first rotation speed of the target of each of the plurality of motor units rotated through rotation of the rotation shaft, and a speed measurement unit of the target of each of the plurality of motor units rotated through rotation of the rotation shaft. It includes a waveform measuring unit that individually measures waveforms generated according to rotation, and a comparison unit that compares the first rotational speed of each target and the second rotational speed calculated from the measured waveform.

Description

Test device for object detection type speed meter and test method for object detection type speed meter using same {TESTING APPARATUS FOR SPEED MEASUREMENT INSTRUMENT AND TESTING METHOD FOR SPEED MEASUREMENT INSTRUMENT}

The present invention relates to a testing device for an object-detecting speed meter and a test method for an object-detecting speed meter using the same. More specifically, the present invention relates to a test device for an object-detecting speed meter, which uses a delay pulse generator to form a time difference and transmits pulses to a plurality of motors for operation. This relates to a test device for an object detection type speed meter that can establish accuracy and reproducibility of speed measurement by calculating and measuring the operating speeds of operating motors and comparing them with each other through calculation and measurement, and a test method for an object detection type speed meter using the same.

Typically, when testing and evaluating an object-detecting speed meter, conventional manual tools are used, which often leads to difficulties in implementing the operation and problems with repeatability and reproducibility. In addition, a problem arises in which it is difficult to set an arbitrary section range.

Conventionally, loop emulator equipment is used, but the measurement between the entry sensor and the exit sensor, which is an important parameter, cannot be measured because it does not reach the length of both end sensors, and the inaccuracy of the horizontal error increases.

In addition, in the past, measurement values were written by hand, resulting in time loss and typos, and inconvenience to the tester as measurements were made on top of a conventional high jig. In recent years, the speed of speed has been improved while solving the above-mentioned problems. The development of a system that can achieve measurement accuracy and reproducibility is required.

Republic of Korea Patent No. 10-0981298 (registration date: September 3, 2010)

The present invention was devised to solve the above-mentioned problems, and the purpose of the present invention is as follows.

The purpose of the present invention is to create a time difference using a delay pulse generator, transmit pulses to a plurality of motors, operate them, calculate and measure the operating speeds of the operated motors, and compare them to form accuracy and reproducibility of speed measurement. The purpose is to provide a test device for an object-detection type speed meter and a test method for an object-detection type speed meter using the same.

The object of the present invention is not limited to the object mentioned above, and other objects and advantages of the present invention that are not mentioned above can be understood through the following description and will be more clearly understood by the examples of the present invention. . Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

In order to achieve the above objectives, the present invention provides a test device for an object detection type speed meter.

The testing device for the object detection type speed meter includes a plurality of motor units having a rotation axis on which a rotating body on which a target is formed is installed; a control unit that rotates the rotation axis of each of the plurality of motor units; A speed measuring unit that individually measures the first rotation speed of the target of each of the plurality of motor units rotated through rotation of the rotation shaft, and a speed measurement unit of the target of each of the plurality of motor units rotated through rotation of the rotation shaft. It includes a waveform measuring unit that individually measures waveforms generated according to rotation, and a comparison unit that compares the first rotational speed of each target and the second rotational speed calculated from the measured waveform.

Here, the rotating body is installed on the rotating shaft,

The target of each of the plurality of motor units is,

It is desirable to form one of a straight body, a cross body, or a polygonal body.

And each of the plurality of motor units is arranged sequentially,

It is preferable that the initial rotation position of each target is set differently according to the order of arrangement of the plurality of motor units.

In addition, the speed measuring unit,

It is preferable to include a distance sensor that measures the first rotational speed of each target rotated by emitting light along a set optical path.

In addition, the waveform measurement unit,

It is preferable to include optical sensors that emit light to each target and measure the waveform through an optical signal modified by the rotating target.

In particular, the control unit can variably set the initial rotation position of the target of each of the rotating bodies.

The testing device according to the invention includes a calibration jig.

The correction jig includes a first jig part in which the plurality of motor parts are arranged, and a second jig part in which the speed measurement part is arranged.

The first jig part includes a first jig body on which first rails are formed, and a first elevator that elevates the first jig body. First movable blocks are arranged to be movable on the first rail. Each of the plurality of motor units is disposed in the first moving blocks. The first moving blocks are moved to a certain position by driving a first moving motor driven under the control of the control unit.

And the second jig part is arranged to face the first jig part at a certain distance away from the first jig part.

The second jig part includes a second jig body on which second rails are formed, and a second elevator that elevates the second jig body. Second movable blocks are arranged to be movable on the second rail. The speed measurement unit is disposed in each of the second moving blocks. The second moving blocks are moved to a certain position by driving a second moving motor driven under the control of the control unit.

Additionally, in the control unit, a motor placement position and a speed measurement position of each speed measurement unit are preset according to each type of the plurality of motor units. The control unit is electrically connected to a selector, and the selector selects each type of the plurality of motor units and transmits a selection signal to the control unit.

The control unit moves the plurality of motor units to the corresponding motor placement position using the first movement motor according to the type of each of the plurality of motor units according to the transmitted selection signal, and uses the second movement motor to move the plurality of motor units to the corresponding motor placement position. Move the speed measurement unit to the relevant speed measurement position.

Additionally, each of the rotating bodies is equipped with a position sensor that measures the relevant position information and transmits it to the control unit.

The control unit may adjust the position of the speed measuring unit using the second elevator so that it corresponds to the measured location information.

According to another embodiment, the present invention prepares a plurality of motor units having a rotating shaft on which a rotating body on which a target is formed is installed,

Rotating the rotation axis of each of the plurality of motor units using a control unit,

Using a speed measuring unit, the first rotational speed of the target of each of the plurality of motor units rotated through rotation of the rotating shaft is individually measured,

Using a waveform measurement unit, the waveform generated according to the rotation of the target of each of the plurality of motor units rotated through rotation of the rotation shaft is individually measured,

A test method for an object detection type speed meter is provided that compares the first rotational speed of each target and the second rotational speed calculated from the measured waveform using a comparison unit.

Installing the rotating body on the rotating shaft,

The target of each of the plurality of motor units

You can choose between a straight body, a cross body, or a polygonal body.

Arrange each of the plurality of motor units sequentially,

Each of the targets may be set to have different initial rotation positions according to the order of arrangement of the plurality of motor units.

The speed measuring unit,

It may include a distance sensor that measures the first rotational speed of each target rotated by emitting light along a set optical path.

The waveform measurement unit,

It may include optical sensors that emit light to each target and measure the waveform through an optical signal modified by the rotating target.

As a means of solving the above problem, the present invention uses a delay pulse generator to form a time difference, transmits pulses to a plurality of motors, operates them, calculates and measures the operating speeds of the operated motors, and compares them with each other to determine the accuracy of speed measurement. and has the effect of forming reproducibility.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

Figure 1 is a conceptual diagram showing the configuration of a testing device for an object detection type speed meter according to the present invention.
Figure 2 is a conceptual diagram showing the principle of speed measurement in a test device for an object detection type speed meter.
Figure 3 is a diagram showing the data flow in the test device for an object detection type speed meter according to the present invention.
Figure 4 is a diagram showing a correction jig according to the present invention.

Hereinafter, with reference to the drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention.

The present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification.

Hereinafter, the “top (or bottom)” of the substrate or the provision or arrangement of any component on the “top (or bottom)” of the substrate means that any component is provided or disposed in contact with the upper (or lower) surface of the substrate. means that

Additionally, it is not limited to not including other components between the substrate and any components provided or disposed on (or under) the substrate.

Next, a test device for an object detection type speed meter of the present invention will be described with reference to the attached drawings.

Figure 1 is a conceptual diagram showing the configuration of a testing device for an object-detecting speed meter according to the present invention, Figure 2 is a conceptual diagram showing the principle of speed measurement in a testing device for an object-detecting speed meter according to the present invention, and Figure 3 is a conceptual diagram showing the configuration of a testing device for an object-detecting speed meter according to the present invention. This is a diagram showing the data flow in a test device for an object detection speed meter.

Referring to Figures 1 to 3, the test device for an object detection type speed meter according to the present invention includes a plurality of motor units 100, a control unit 200, a speed measurement unit 300, a waveform measurement unit 400, and , may include a comparison unit 500.

The plurality of motor units 100 may be direct current servo motors, and motors having specifications other than the motor units may be adopted. The plurality of motor units 100 may be composed of three motor units 110, 120, and 130, and may be more numerous.

Each of the plurality of motor units 110, 120, and 130 has a rotation axis 111, 121, and 131. A rotating body is detachably installed on the rotating shafts 111, 121, and 131 of each of the plurality of motor units 110, 120, and 130. Targets 112, 122, and 132 may be installed on the rotating body. The targets 112, 122, and 132 have their centers connected to the centers of the rotation axes 111, 121, and 131, and are formed in a symmetrical shape.

And the plurality of motor units 110, 120, and 130 are arranged in the same row at regular intervals from each other. The motor units 110, 120, and 130 arranged in this way are motors meeting the same standards, and since they are test subjects, they can be replaced with motors meeting different standards.

Additionally, the initial rotation position of each target 112, 122, and 132 of the motor units 110, 120, and 130 may be set at a constant rotation angle difference from one side to the other side based on the row. The settings may be set in advance in the control unit 200.

The control unit 200 according to the present invention can control the rotation shafts 111, 121, and 131 of each of the plurality of motor units 110, 120, and 130 to rotate. Here, the control unit 200 may include a delay pulse generator 210. The delay pulse generator 210 transmits pulses to each of the motor units 110, 120, and 130 by providing a predetermined time difference, and through this, the rotation timing of each of the rotation axes 111, 121, and 131 of the plurality of motor units 110, 120, and 130 is driven according to a predetermined time difference. This can be done.

The speed measuring unit 300 according to the present invention individually measures the first rotational speed of the target (112, 122, 132) of each of the plurality of motor units (110, 120, 130) rotated through rotation of the rotation shafts (111, 121, 131) and controls the control unit ( 200).

The speed measuring unit 300 is arranged at a certain distance from the plurality of motor units 110, 120, and 130, and may be placed facing each other.

Referring to FIGS. 1 to 3, the speed measuring unit 300 according to the present invention may be provided in a one-to-one correspondence with each of the motor units 110, 120, and 130.

Each of the speed measuring units 300 may include a light emitting unit 310 that emits light, and a light receiving unit 320 that receives the light reflected by the reflector 330 disposed at a certain position. .

Referring to Figure 1, emitted light and reflected light may follow a certain optical path. And the targets 112, 122, and 132 provided in each motor unit 110, 120, and 130 may be located on the optical path. In addition, the reflector 330 is disposed in a position facing the distance sensor having the light emitting unit 310 and the light receiving unit 320, and may be placed downstream of the plurality of motor units 110, 120, and 130.

Here, when the target (112, 122, 132) is rotated by driving the corresponding motor unit (110, 120, 130), the emitted light may be reflected and received by the rotating target (112, 122, 132), and through this, the distance value to the target (112, 122, 132) is calculated. This can be done, and when the targets 112, 122, and 132 are continuously rotated, the targets 112, 122, and 132 whose distance values are measured during the next rotation can be recognized. Through this, the first rotation speed of the target (112, 122, 132) can be measured through the time at which the rotating target (112, 122, 132) is repeatedly recognized and the distance value obtained as above, and transmitted to the control unit 200.

For example, when a plurality of motor units (110, 120, 130) are provided as the first, second, and third motor units (110, 120, and 130), each of the speed measurement units (300) measures the first, second, and third targets (112, 122, and 132) through the above-described method. The first rotation speed can be measured respectively.

Meanwhile, the waveform measurement unit 400 according to the present invention may include optical sensors 410 and an oscilloscope 420.

The optical sensors 410 emit light from each motor unit 110, 120, and 130 to the rotating targets 112, 122, and 132, and a waveform is generated while this light is blocked by hitting the rotating targets 112, 122, and 132, and an oscilloscope (420) can measure this. And the second rotation speed can be calculated through the cycle in which the waveform is repeated.

The second rotation speed of each of the first, second, and third targets (112,122,132) can be calculated through the waveforms of the first, second, and third targets (112,122,132) rotated by the first, second, and third motor units (110,120,130), respectively. there is.

And the comparison unit 500 according to the present invention can calculate the error rate by comparing the degree of coincidence between the first rotation speed and the second rotation speed of the first, second, and third motor units (110, 120, and 130).

Referring to FIGS. 1 to 3, a test method for an object-detecting speed meter using the test device for an object-detecting speed meter of the present invention will be described.

Prepare a plurality of motor units (110, 120, 130) having rotation axes (111, 121, 131) on which the rotating body on which the targets (112, 122, 132) are formed is installed. The plurality of motor units 110, 120, and 130 are test subjects and may be direct current servo motors.

The plurality of motor units 100 include first, second, and third motor units 110, 120, and 130, and the first, second, and third motor units 110, 120, and 130 are arranged at regular intervals along a set row.

A first rotating body is installed on the rotation axis 111 of the first motor unit 110. The first rotating body is formed with a cross-shaped first target 112. The center of the first rotating body is connected to the rotation axis 111. Since the first target 112 is shaped like a cross, ribs are formed that protrude at 90-degree intervals from the center.

Likewise, the second and third motor units 120 and 130 are respectively provided with second and third rotating bodies on which cross-shaped second and third targets 122 and 132 are formed.

However, the initial rotation positions of the first, second, and third rotors may be arranged at a certain rotation angle as shown in FIG. 5. In FIG. 5 , the first, second, and third targets 112, 122, and 132 are shown in the example of a cross shape, but a straight shape or a polygonal shape may also be applied.

Next, the control unit 200 uses the delay pulse generator 210 to generate pulses for driving the first, second, and third motor units (110, 120, and 130) with a time difference. The time difference can be variably set through the control unit 200.

Through this, the second motor unit 120 can be driven a certain time after the first motor unit 110 is driven, and the third motor unit 130 can be driven after this certain time. Therefore, the first, second, and third rotating bodies can be rotated at regular time intervals.

And using the speed measuring unit 300, the first rotational speed of the targets 112, 122, and 132 of each of the plurality of motor units 100 rotated through rotation of the rotation shafts 111, 121, and 131 can be individually measured.

That is, the speed measuring unit 300 disposed at a position corresponding to the first motor unit 110 measures the first rotational speed of the first rotating body with respect to the first target 112. Since the measurement of the first rotational speed is the same as the above-described method, description will be omitted.

And the first rotational speeds for the second and third targets (122,132) of the second and third rotating bodies of the second and third motor units (120,130) are also measured through the corresponding speed measuring unit (300) in the same manner as above. .

The measured first rotation speeds for the first, second, and third targets 112, 122, and 132 of the first, second, and third rotating bodies may be transmitted to the comparison unit 500.

And the waveform measurement unit 400 can be used to individually measure the waveforms generated according to the rotation of the targets 112, 122, and 132 of each of the plurality of motor units 100 rotated through rotation of the rotation shafts 111, 121, and 131. .

That is, by detecting that the light emitted through the first optical sensor 410 is transmitted to the rotating first target 112, the first motor unit 110 is driven and the first target 112 is rotated. One waveform can be measured through the oscilloscope 420.

At the same time, by detecting that the light emitted through the second and third optical sensors 410 is transmitted to the rotating second and third targets (122 and 132), the second and third motor units (120 and 130) are driven to rotate the second and third targets (122 and 132). The 2nd and 3rd waveforms for 3 targets (122, 132) can be measured. The second rotation speeds for the first, second, and third targets (112, 122, and 132) rotated according to the measured first, second, and third waveforms can be calculated, respectively.

Here, the first waveform is an entry waveform, the second waveform is an intermediate waveform, and the third waveform is an exit waveform.

Information about the second rotation speeds calculated in this way can be transmitted to the comparison unit 500.

And the comparison unit 500 according to the present invention compares the first rotational speeds of the first, second, and third targets (112, 122, and 132) with the second rotational speeds calculated from the measured first, second, and third waveforms.

Through this, the error rates of the first and second rotation speeds for the first motor unit 110 can be calculated. At the same time, the error rates of the first and second rotation speeds for the second and third motor units 120 and 130 can be calculated.

Here, the error rates of the first and second rotation speeds for the first motor unit 110 are referred to as the first error rate, and the error rates of the first and second rotation speeds for the second and third motor units 120 and 130 are referred to as the second and third error rates. Speaking of error rates, the 1st, 2nd, and 3rd error rates can be additionally compared to each other.

In addition, the comparison unit 500 selects a case with a relatively low error rate among the first, second, and third error rates, sets the selected error rate as a standard error rate, and transmits the selected error rate to the control unit 200. This standard error rate can be a standard that can be used when testing motors of the corresponding standard.

Through this, in the present invention, cross-verification may be possible by calculating the first and second rotation speeds and comparing the rotation speeds of motor units having the same specifications.

Therefore, the present invention uses a delay pulse generator to create a time difference, transmits pulses to a plurality of motors to operate them, and calculates and measures the operating speeds of the operated motors to compare them to achieve accuracy and reproducibility of speed measurement.

Figure 4 is a diagram showing a correction jig according to the present invention.

Referring to Figure 4, the testing device according to the present invention includes a calibration jig.

The correction jig includes a first jig part 600 in which the plurality of motor parts 110, 120, and 130 are arranged, and a second jig part 700 in which the speed measurement part 300 is arranged.

The first jig part 600 includes a first jig body 610 on which first rails 611 are formed, and a first elevator 620 that elevates the first jig body 610. First movable blocks (not shown) are movably disposed on the first rail 611. Each of the plurality of motor units 110, 120, and 130 is disposed in the first moving blocks. The first moving blocks are moved to a certain position by driving the first moving motor 630 driven under the control of the control unit 200.

And the second jig part 700 is arranged to face the first jig part 600 at a certain distance away.

The second jig part 700 includes a second jig body 710 on which second rails 711 are formed, and a second elevator 720 that elevates the second jig body 710. Second movable blocks (not shown) are movably disposed on the second rail. The speed measuring unit 300 is disposed in each of the second moving blocks. The second moving blocks are moved to a certain position by driving the second moving motor 730 driven under the control of the control unit 200.

In addition, in the control unit 200, the motor placement position and the speed measurement position of each of the speed measurement units are preset according to the type of each of the plurality of motor units 110, 120, and 130. The control unit 200 is electrically connected to the selector 220, and the selector 220 selects each type of the plurality of motor units 110, 120, and 130 and transmits a selection signal to the control unit 200.

The control unit 200 uses the first moving motor 630 to position the plurality of motor units 110, 120, and 130 according to each type of the plurality of motor units 110, 120, and 130 according to the transmitted selection signal. and moves the speed measurement unit 300 to the corresponding speed measurement position using the second movement motor 730.

In addition, each of the rotating bodies on which the targets 112, 122, and 132 are formed may be equipped with a position sensor 230 that measures the corresponding position information and transmits it to the control unit 200.

The control unit 200 can adjust the position of the speed measuring unit using the second elevator 720 so that it corresponds to the measured location information.

Through this, in the present invention, when the standard of the motor to be tested is set and the type of motor is selected, these motors are moved and arranged so that they are automatically placed in the corresponding position in the first compensation jig, and the first, There is also the advantage of being able to automate the measurement by measuring and comparing two rotation speeds.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

100: motor part
200: control unit
300: Speed measurement unit
400: Waveform measurement unit
500: Comparison section
600: 1st jig part
700: 2nd jig part

Claims (10)

In the test device for object detection type speed meter,
The test device is,
A plurality of motor units having a rotating shaft on which a rotating body on which a target is formed is installed;
a control unit that rotates the rotation axis of each of the plurality of motor units;
a speed measuring unit that individually measures a first rotation speed of the target of each of the plurality of motor units rotated through rotation of the rotation shaft; and,
a waveform measurement unit that individually measures waveforms generated according to the rotation of the target of each of the plurality of motor units rotated through rotation of the rotation shaft; and,
A testing device for an object detection type speed meter, comprising a comparison unit that compares the first rotational speed of each target and the second rotational speed calculated from the measured waveform.
According to clause 1,
The rotating body is installed on the rotating shaft,
The target of each of the plurality of motor units is,
Characterized by forming one of a straight body, a cross body, or a polygonal body
According to clause 2,
Each of the plurality of motor units is arranged sequentially,
Each of the targets is characterized in that its initial rotation position is set differently according to the order of arrangement of the plurality of motor units.
According to clause 3,
The speed measuring unit,
Characterized by comprising a distance sensor that measures the first rotational speed of each target rotated by emitting light along a set optical path.
According to clause 4,
The waveform measurement unit,
Characterized in that it includes optical sensors that emit light to each target and measure the waveform through an optical signal modified by the rotating target.
Prepare a plurality of motor units each having a rotation axis on which a rotating body on which a target is formed is installed,
Rotating the rotation axis of each of the plurality of motor units using a control unit,
Using a speed measuring unit, the first rotational speed of the target of each of the plurality of motor units rotated through rotation of the rotating shaft is individually measured,
Using a waveform measurement unit, the waveform generated according to the rotation of the target of each of the plurality of motor units rotated through rotation of the rotation shaft is individually measured,
A test method for an object detection type speed meter, characterized in that the first rotational speed of each target and the second rotational speed calculated from the measured waveform are compared using a comparison unit.
According to clause 6,
Installing the rotating body on the rotating shaft,
The target of each of the plurality of motor units
A test method for an object detection type speed meter, characterized in that one of a straight body, a cross body, or a polygonal body is selected.
According to clause 7,
Arrange each of the plurality of motor units sequentially,
A test method for an object detection type speed meter, characterized in that each target is set to have a different initial rotation position according to the order of arrangement of the plurality of motor units.
According to clause 8,
The speed measuring unit,
A test method for an object detection type speed meter, comprising a distance sensor that emits light along a set optical path and measures the first rotational speed of each target rotated.
According to clause 9,
The waveform measurement unit,
A test method for an object detection type speed meter, comprising optical sensors that emit light to each target and measure the waveform through an optical signal modified by the rotating target.