JP7359906B1 - Information processing device, measuring device and measuring method - Google Patents

Abstract

An object of the present invention is to easily associate measurement points of a measurement target with measurement data. [Solution] An information processing device includes an image acquisition unit that acquires a captured image including a measurement target and a contact type sensor, and stores a reference image captured in advance at the time of measurement when the sensor is in contact with the measurement target. and a determination unit that determines whether the acquired captured image and the reference image match. This information processing device associates measurement data measured by the sensor when a match is determined with a measurement point of the measurement object corresponding to a captured image acquired when a match is determined. [Selection diagram] Figure 3

Description

The present invention relates to a measurement technique using a contact sensor.

2. Description of the Related Art Techniques for measuring the dimensions of a measurement object using a contact sensor such as a linear gauge are known. By bringing the contact of the linear gauge into contact with the surface of the object to be measured, the scale integrated with the contact is displaced. By detecting the displacement of this scale with a built-in magnetic sensor, the position of its surface can be detected, and the dimensions of the object to be measured can be calculated (Patent Document 1).

When acquiring data from such a sensor, it is necessary to specify which part of the object to be measured is the information measured by the sensor. Conventionally, methods such as using a sensor-specific application to obtain the correspondence relationship or creating a separate program to automate the timing of measurement and data acquisition have been taken.

Japanese Patent Application Publication No. 2011-53046

However, when adopting a sensor-specific application, it is not easy to link it with equipment other than the measuring instrument including the sensor. Furthermore, it is difficult to create an automation program, and it is necessary to update the program every time the environment such as the measurement process changes. In any case, there was a problem in terms of versatility.

An embodiment of the present invention is an information processing device. This information processing device includes an image acquisition unit that acquires a captured image including a measurement target and a contact type sensor, and a reference image that stores a reference image captured in advance during measurement when the sensor is in contact with the measurement target. It includes a storage section and a determination section that determines whether the acquired captured image and the reference image match. This information processing device associates measurement data measured by the sensor when a match is determined with a measurement point of the measurement object corresponding to a captured image acquired when a match is determined.

An embodiment of the present invention is a measuring device. This measuring device includes an imaging section that captures an image of the measurement object, a contact type sensor that measures the measurement object, and an information processing section that processes measurement data of the measurement object. The information processing unit includes an image acquisition unit that acquires a captured image including the measurement target and the sensor, and a reference image storage unit that stores a reference image captured in advance during measurement when the sensor is in contact with the measurement target. , and a determination unit that determines whether the acquired captured image and the reference image match. The information processing unit associates the measurement data measured by the sensor when a match is determined with a measurement location of the measurement object corresponding to the captured image acquired when a match is determined.

An embodiment of the present invention is a measurement method. This measurement method consists of a step of storing a reference image taken in advance during measurement when a contact type sensor is in contact with a measurement target, a step of acquiring a captured image including the measurement target and the sensor, and a step of acquiring a captured image including the measurement target and the sensor. and determining whether the captured image matches the reference image. The measurement data measured by the sensor when a match is determined is associated with the measurement point of the measurement object corresponding to the captured image acquired when the match is determined.

According to the present invention, it is possible to easily associate a measurement point of a measurement object with measurement data based on a captured image including the measurement object and a sensor.

FIG. 1 is a plan view schematically showing a measurement system according to an embodiment. FIG. 2 is a perspective view schematically showing the configuration of the main parts of the measuring device. FIG. 2 is a cross-sectional view showing the configuration of a sensor. FIG. 2 is a functional block diagram of an information processing device. An example of an image captured by the imaging unit is shown. It is a flow chart showing measurement processing by an information processing device. 7 is a diagram illustrating a method for measuring a measurement target according to Modification 1. FIG. FIG. 7 is a diagram illustrating a method for measuring a measurement target according to a second modification. FIG. 7 is a diagram showing processing at the time of measurement according to modification example 3;

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view schematically showing a measurement system according to an embodiment.
The measurement system 1 is a system that measures the dimensions of a measurement object W that is sequentially conveyed along a predetermined trajectory. The measurement system 1 includes a transport device 2 that transports a measurement object W, a measurement device 4 that measures the dimensions of the measurement object W when the measurement object W is located in a predetermined measurement region R, and the transport device 2 and the measurement device. 4 is provided.

The conveyance device 2 is a belt conveyor in this embodiment. The measuring device 4 includes an imaging unit 7 that images the measurement target W, a sensor 8 that detects the position of each surface of the measurement target W, and processes the captured image of the imaging unit 7 and the detection information of the sensor 8 to obtain the measurement target W. includes an information processing device 10 that calculates the dimensions of. The sensor 8 is a contact type sensor, and in this embodiment is a linear gauge (details will be described later). The control device 6 includes a transport control section 12 that drives and controls the transport device 2, and a sensor drive section 14 that drives and controls the sensor 8.

FIG. 2 is a perspective view schematically showing the configuration of the main parts of the measuring device 4. As shown in FIG.
A measurement area R is set at a predetermined position along the transport path of the transport device 2. The sensor 8 is provided above the measurement region R so as to be movable arbitrarily. That is, the sensor 8 is movable in the conveyance direction (X direction) by the belt conveyor, the depth direction (Y direction) perpendicular to the conveyance direction, and the vertical direction (Z direction), and the sensor drive unit 14 controls the movement. . Although FIG. 2 shows an example in which the belt conveyor is driven to the left, it may also be driven to the right.

When the measurement target W reaches the measurement region R, the sensor 8 descends and its tip (that is, a contact) comes into contact with the surface of the measurement target W. The position of the surface of the object W to be measured is detected based on the sensor signal output when this contact comes into contact. The imaging unit 7 is a camera, and includes an image sensor (imaging element) such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge-Coupled Device). This camera has a resolution of about 1 million pixels (1224 x 1024) and can capture up to 60 images per second.

The imaging unit 7 captures an image including the measurement target W and the sensor 8. The information processing device 10 can identify the measurement location of the measurement target W based on the captured image captured during measurement by the sensor 8 . That is, the position (height in the example of FIG. 2) of the measurement point can be calculated. Details of this measurement method will be described later.

FIG. 3 is a cross-sectional view showing the configuration of the sensor 8. As shown in FIG.
The sensor 8 includes a cylindrical main body 20, a spindle 22 supported by the main body 20, a contact 24 provided at the tip of the spindle 22, a scale 26 provided at the rear end of the spindle 22, and a scale 26. It is equipped with a magnetic sensor 28 that detects the position of. A ball spline bearing structure 30 is provided on the distal end side of the main body 20, and supports the spindle 22 so as to be slidable in the axial direction of the main body 20.

The main body 20 is constructed by assembling an outer cylinder 32, a cylinder housing 34, and a cover case 36 in the axial direction. A ball spline bearing structure 30 is provided in the outer cylinder 32. The ball spline bearing structure 30 includes a spline groove 33 provided on the outer peripheral surface of the spindle 22, a plurality of balls 35 disposed between the outer cylinder 32 and the spline groove 33, and a rotatable structure for rotating these balls 35. It has a retainer 37 that moves in the axial direction of the spindle 22 while holding it.

A cylindrical packing 38 is provided at the tip opening of the outer cylinder 32. The spindle 22 passes through the packing 38 and is driven in the direction of advancing or retracting from the main body 20. Thereby, the sensor 8 is configured to expand and contract in the axial direction.

An air cylinder mechanism 40 for driving the spindle 22 in the axial direction is provided inside the cylinder housing 34. The contactor 24 is exposed from the main body 20, and is attached to and detached from the surface of the measurement target W by driving the spindle 22. The scale 26 moves in the axial direction inside the main body 20 in conjunction with the contactor 24 . A position detection pattern (magnetization pattern) is formed on the scale 26 . A magnetic sensor 28 is provided inside the main body 20 so as to face the pattern of the scale 26 .

With this configuration, when the spindle 22 is displaced, the magnetic sensor 28 reads the pattern of the scale 26 as position information. The magnetic sensor 28 is connected to a signal cable 48 via a flexible printed circuit board 44 and a connector 46. The detection signal of the sensor 8 is output to the information processing device 10 via the signal cable 48. In this embodiment, a magnetic sensor is used in this way, but an optical or electrostatic sensor may also be used.

FIG. 4 is a functional block diagram of the information processing device 10.
Each component of the information processing device 10 includes hardware including arithmetic units such as a CPU (Central Processing Unit) and various auxiliary processors, storage devices such as memory and storage, wired or wireless communication lines connecting them, and storage devices. It is realized by software that is stored in the computer and supplies processing instructions to the arithmetic unit. A computer program may be composed of a device driver, an operating system, various application programs located in an upper layer thereof, and a library that provides common functions to these programs. Each block described below indicates a functional unit block rather than a hardware unit configuration.

Note that each component of the control device 6 (see FIG. 1) includes hardware including arithmetic units such as a processor, storage devices such as memory and storage, and wired or wireless communication lines that connect them, and is stored in the storage device. It may also be realized by software that supplies processing instructions to the arithmetic unit. Although the information processing device 10 is configured as a device separate from the control device 6 in this embodiment, it may be configured as a device integrated with the control device 6.

Information processing device 10 includes an input/output interface section 110, a data processing section 112, and a data storage section 114. The input/output interface unit 110 is in charge of processing related to input/output interfaces including exchanging data with external devices or devices. The data processing unit 112 executes various processes based on the data acquired by the input/output interface unit 110 and the data stored in the data storage unit 114. The data processing section 112 also functions as an interface for the input/output interface section 110 and the data storage section 114. The data storage unit 114 stores various programs and setting data.

The input/output interface section 110 includes an input section 120 and an output section 122. The input section 120 includes an image acquisition section 124 and a measurement data acquisition section 126. The image acquisition unit 124 acquires a captured image captured by the imaging unit 7. The measurement data acquisition unit 126 acquires measurement data measured by the sensor 8. The output section 122 includes a display section 128. The display unit 128 displays various images as a user interface.

The data storage section 114 includes a reference image storage section 140 and a measurement data storage section 142. The reference image storage unit 140 stores a reference image captured in advance at the time of measurement by the sensor 8, that is, when the contactor 24 is in contact with the measurement target W. This reference image is a captured image acquired during measurement by the sensor 8, and is an image for determining which part of the measurement object W the measurement point is, and is an image for determining which part of the measurement object W the measurement point is set in the measurement object W. There are as many as Each reference image is stored so as to be associated with a measurement ID indicating a measurement location. The measurement data storage unit 142 stores measurement data in association with a measurement ID every time a measurement is performed. The data storage unit 114 includes a memory that functions as a working area when the data processing unit 112 performs arithmetic processing.

The data processing section 112 includes an imaging processing section 130, a measurement data management section 132, a determination section 134, a clock section 136, and a notification section 138. The imaging processing unit 130 controls the imaging unit 7 to capture an image including the measurement target W and the sensor 8 . The measurement data management unit 132 associates a measurement ID indicating a measurement location of the measurement object W with a reference image and registers them in the reference image storage unit 140. Furthermore, each time measurement data is acquired, the measurement data management unit 132 associates the measurement data with a measurement ID and stores the measurement data in the measurement data storage unit 142.

Note that the measurement target W may be a processed product or a semi-finished product in the middle of processing. If there are multiple types of measurement targets W, a reference image is registered for each type. If there are a plurality of measurement points in the measurement target W, a reference image is registered for each measurement point.

The determination unit 134 determines whether the acquired captured image and the reference image match. Specifically, the determination unit 134 compares the sequentially acquired captured images with each of the plurality of reference images registered in the reference image storage unit 140, and determines their coincidence (similarity). If the degree of similarity between the captured image and the reference image falls within predetermined criteria, it is determined that they match. This matching determination may be performed pixel by pixel of the image. Alternatively, contours and characteristic shapes may be extracted from each image and their consistency may be determined.

The measurement data management unit 132 stores the measurement data measured by the sensor 8 when it is determined that the captured image and the reference image match, of the measurement target W that corresponds to the captured image that was acquired when it was determined that they match. Correlate with the measurement location. That is, the measurement ID indicating the relevant measurement location and the measurement data are associated and stored in the measurement data storage unit 142. Thereby, the measurement results by the sensor 8 are saved. The determining unit 134 only determines whether the images match, and the determination result does not include the measurement results (measured values) by the sensor 8. When it is determined that the images match, the measurement location on the measurement object W based on the determination result is associated with the measurement result by the sensor 8, and as a result, the measurement has been performed.

The clock unit 136 drives a timer that clocks a predetermined time for measurement processing. The notification unit 138 executes a predetermined notification process when a match between the captured image and the reference image is not determined within a set time after the captured image is acquired. The notification unit 138 causes the display unit 128 to display a processing defect such as the processing accuracy of the measurement object W being lower than a reference value, a malfunction of the sensor 8, etc. as a measurement error. The notification unit 138 may notify the measurement error by voice or the like.

Next, a method for measuring the measurement target W will be described in detail.
FIG. 5 shows an example of an image captured by the imaging unit 7. In this example, the measurement target W has a stepped shape, and a first surface F1 at a low position and a second surface F2 at a high position are set as measurement points. The first surface F1 corresponds to the "first measurement point", and the second surface F2 corresponds to the "second measurement point". FIG. 5(A) shows a captured image (first captured image) when measuring the first surface F1, and FIG. 5(B) shows a captured image (second captured image) when measuring the second surface F2.

In measuring the measurement target W, the transport control of the measurement target W by the transport control unit 12 and the drive control of the sensor 8 by the sensor drive unit 14 cooperate. The sensor drive unit 14 (see FIG. 1) causes the sensor 8 to stand by above the measurement region R. When the measurement target W reaches a predetermined position in the measurement area R, the conveyance control unit 12 temporarily stops the belt conveyor of the conveyance device 2. At this time, the first surface F1 of the measurement target W is located directly below the sensor 8. The working distance of the imaging unit 7 is set in advance so that the measurement target W and the sensor 8 are included in the angle of view at this time.

Then, the sensor drive unit 14 lowers the sensor 8 from the standby position, and stops the lowering when the contactor 24 contacts the first surface F1, that is, when the detection signal of the sensor 8 is output. In the example shown in FIG. 5(A), the sensor 8 maintains a substantially fully extended state. The imaging unit 7 performs continuous imaging (continuous imaging by first imaging) during a set time including at least before and after the contact 24 contacts the first surface F1.

This set time is determined by determining the timing at which each measurement point contacts the contactor 24 in advance when the machining accuracy of the measurement target W is within the allowable range, through experiments and analysis, and by setting a predetermined margin before and after that timing. It may also be made to last. For example, a time that is deemed necessary and sufficient when acquiring a reference image may be set as the set time.

The determining unit 134 determines whether the plurality of captured images acquired at this time match any of the reference images. When the processing accuracy of the first surface F1 is within the allowable range, one of the plurality of captured images matches the reference image (first reference image) corresponding to the measurement of the first surface F1. Measured data when this coincidence is determined is stored as indicating the height position of the first surface F1. Note that the height position of the first surface F1 can be calculated based on the three-dimensional coordinate (Z coordinate) of the sensor 8 and the amount of displacement of the scale 26 detected by the magnetic sensor 28 of the sensor 8.

Subsequently, the sensor drive unit 14 raises the sensor 8 to the standby position. The conveyance control unit 12 drives the belt conveyor by a predetermined amount. At this time, the second surface F2 of the measurement object W is located directly below the sensor 8. Then, the sensor drive unit 14 lowers the sensor 8 again, and stops the lowering of the sensor 8 after the contactor 24 contacts the second surface F2.

In the example of FIG. 5(B), the sensor 8 is lowered to the same position as when measuring the first surface F1. On the other hand, since the second surface F2 is located at a higher position than the first surface F1, the sensor 8 is in a contracted state by a predetermined length. The imaging unit 7 performs continuous imaging (continuous imaging by second imaging) during a set time including at least before and after the contact 24 contacts the second surface F2. It is assumed that this set time includes the time during which the sensor 8 can shrink. In this embodiment, this setting time is the same as in the case of measuring the first surface F1, but it may be different in a modified example.

The determining unit 134 determines whether the plurality of captured images acquired at this time match any of the reference images. When the processing accuracy of the second surface F2 is within the allowable range, one of the plurality of captured images matches the reference image (second reference image) corresponding to the measurement of the second surface F2. Measured data obtained when this coincidence is determined is stored as indicating the height position of the second surface F2. Note that the height position of the second surface F2 can be calculated based on the three-dimensional coordinate (Z coordinate) of the sensor 8 and the amount of displacement of the scale 26 detected by the magnetic sensor 28 of the sensor 8.

In addition, in a modification, the lowering position of the sensor 8 when measuring the second surface F2 may be different from that when measuring the first surface F1. Depending on the type of measurement target W, the number of measurement points may be one or three or more. A reference image is prepared according to the number and position of the measurement points, and the driving of the sensor 8 and the imaging of the imaging section 7 are controlled.

FIG. 6 is a flowchart showing measurement processing by the information processing device 10.
This process is executed when the measurement target W reaches the measurement region R and the transport control unit 12 and the sensor drive unit 14 start operations for measurement.

The clock section 136 clears a timer (not shown) and starts clocking (S10). The image acquisition unit 124 sequentially acquires images captured by the imaging unit 7. When the determination unit 134 determines that the first captured image matches the first reference image (Y in S12), the determination unit 134 stores the measurement data (first measurement data) acquired for the coincidence in association with the measurement ID ( S14). Further, if it is determined that the second captured image matches the second reference image (Y in S16), the measurement data (second measurement data) acquired for the match is stored in association with the measurement ID (S18).

Then, when the preset data acquisition time has elapsed (Y in S20), if the measurement of each measurement point for that measurement target W has been completed (Y in S22), the process moves to the measurement of the next measurement target W. Therefore, the process returns to S10. If the measurement of each measurement point for the measurement target W is not completed (N in S22), the notification unit 138 reports a measurement error (S24). That is, the display unit 128 displays an alert image indicating that normal measurement was desired or that the processing dimensions of the measurement object W deviate greatly from the design values. Note that the "data acquisition time" is set in advance to a necessary and sufficient time according to the number of measurement points on the measurement target W.

As explained above, in this embodiment, the contact type sensor 8 is brought into contact with the measurement target W to obtain measurement data, and the measurement location and measurement data are determined based on the captured image including the sensor 8 and the measurement target W. can be matched. That is, the measurement location is identified from the captured image, and the measurement result is obtained from the sensor output. Therefore, the measurement location can be easily identified and accurate measurement data can be obtained. Since the captured image is sufficient as long as it can specify the measurement location, the image resolution can be kept lower than in the method of measuring based on the captured image, and the cost of the imaging unit (camera) can also be reduced.

Since it is sufficient to determine whether the captured image and the reference image match, a dedicated application is not necessarily required. Since a method is adopted in which measurement data is captured using the match between the captured image and the reference image as a trigger, even if the measurement environment changes, it is sufficient to update the reference image, and there is no need to update the program itself. Therefore, the measuring device 4 has high versatility.

[Modified example]
FIG. 7 is a diagram illustrating a method for measuring the measurement target W according to the first modification.
In this modification, the comparison between the captured image and the reference image is performed not on the entire image but on a part of the image. That is, a specific portion P2 to be compared is set for each measurement location in the captured image P1. However, the specific portion P2 is set to include the contact portion between the sensor 8 and the measurement target W.

In the example of FIG. 7, a specific portion P2 is set for measurement of the first surface F1. The determining unit 134 determines whether the specific portion P2 of the captured image P1 matches the corresponding portion in the reference image. Measured data when this coincidence is determined is stored as indicating the height position of the first surface F1. Note that the same applies to the measurement of the second surface F2.

By using a portion of the captured image as a determination target in this way, the determination processing time can be shortened. In addition, by reducing the size of the image portion to be determined, the influence of the background of the measurement target W is eliminated, so that it is also possible to improve the determination accuracy.

FIG. 8 is a diagram illustrating a method for measuring the measurement target W according to the second modification.
In this modification, the measuring device 204 includes a sensor 8 (first sensor) and a sensor 208 (second sensor). The sensor 8 is driven in the Z direction and measures the position of the upper surface (first measurement location) of the measurement target W. The sensor 208 is driven in the Y direction and measures the position of the side surface (second measurement location) of the measurement target W.

In the example of FIG. 8, the surface measured by the sensor 208 is the back surface of the measurement target W when viewed from the imaging unit 7 side. Therefore, the contact 224 of the sensor 208 is hidden behind the measurement target W during measurement, and the contact state between the contact 224 and the measurement target W does not appear in the captured image. Therefore, in this modification, a time difference is set between the measurement at the first measurement location and the measurement at the second measurement location. The data storage section 114 includes a time difference storage section, and the time difference storage section stores the time difference in advance. This "time difference" may be measured when acquiring the reference image.

That is, the measurement by the sensor 208 is performed a predetermined time after the measurement by the sensor 8 is performed. The determination unit 134 determines whether the captured image and the reference image match the measurement at the first measurement location. The measurement data management unit 132 stores the measurement data measured by the sensor 8 when it is determined that the captured image and the reference image match, of the measurement target W that corresponds to the captured image that was acquired when it was determined that they match. Correlate with the measurement location. Then, after the measurement data is associated with the first measurement location, the measurement data management unit 132 associates the measurement data measured by the sensor 208 when the above-mentioned time difference has elapsed as a predetermined time with the second measurement location. Attach.

In this way, when the contact state between the sensor and the object to be measured appears in the captured image, measurement data (first measurement data) may be acquired based on the match between the captured image and the reference image. If the contact state between the sensor and the measurement target does not appear in the captured image, measurement data (second measurement data) may be acquired in accordance with the elapse of the time difference from the acquisition of the first measurement data. .

FIG. 9 is a diagram illustrating processing at the time of measurement according to Modification 3.
In this modification, it is determined whether or not there is a failure in the sensor 8 prior to the start of measurement, and when a failure is determined, an error notification indicating the fact is executed. This determination process is performed when the sensor 8 is on standby.

As an example of a failure, assume here that a foreign object gets caught in the sliding portion of the spindle 22 (see FIG. 3), causing the sensor 8 to contract in the standby state. In such a case, normal measurement by the sensor 8 cannot be expected. Therefore, in this modification, the presence or absence of such a failure is determined based on the consistency of captured images.

The reference image storage unit 140 stores in advance a second reference image that serves as a determination standard when the sensor 8 is normal. This second reference image is taken in advance during standby before the start of measurement, and as shown in FIG. 9(A), the sensor 8 is in a fully extended state.

The determining unit 134 determines whether the captured image acquired when the sensor 8 is on standby and the second reference image match. The notification unit 138 executes a predetermined notification process when it is not determined that the captured image and the second reference image match. The notification unit 138 causes the display unit 128 to display an alert indicating a failure of the sensor 8. The notification unit 138 may notify the alert by voice or the like.

[Other variations]
In the embodiment described above, a linear gauge is illustrated as the contact type sensor 8, but a touch probe or other sensor may be employed. In the case of a touch probe, there is no function to expand or contract the part connected to the contact.

In the above embodiment, a belt conveyor is illustrated as the conveyance device 2, but a moving body such as a loading platform that moves along a rail on a track or other conveyance device may be employed.

Although not described in the above embodiment, the information processing device 10 may calculate the dimensions of the measurement target W based on the measurement data of the sensor 8. The determination unit 134 may determine the measurement object W to be a defective product when the error between the calculated dimension and the design dimension exceeds a predetermined determination reference value. Then, the notification unit 138 may notify that the product is defective.

In the embodiment described above, a configuration is shown in which the measurement target W is measured using a single sensor 8, but a plurality of sensors may be used to measure a plurality of measurement points on the measurement target. Measurements by multiple sensors may be performed sequentially or simultaneously. In that case, the reference image storage unit stores reference images captured in advance at the time of measurement by a plurality of sensors. The determination unit determines whether the acquired captured image and the reference image match.

Although not described in the above embodiment, the sensor may measure the size of a hole formed in the measurement target. In that case, there is a possibility that the contact of the sensor will not appear in the captured image due to being inserted into the hole. Even in that case, a reference image captured in advance at the time of measurement when the sensor is in contact with the surface of the hole is stored. The determination unit determines whether the acquired captured image and the reference image match. In this case, although the contact does not appear in either the captured image or the reference image, it is possible to determine whether the images match each other. By storing a reference image captured during measurement in advance and comparing the captured image with this, it does not matter whether the contact state between the sensor and the object to be measured appears in the image or not.

In the above embodiment, the "measurement time of the sensor" is defined as the time when the sensor 8 comes into contact with the measurement target W. However, if the sensor 8 is of the expandable type as in the above embodiment, the sensor 8 comes into contact with the measurement target W. It may be done at the moment of contact, or it may be set after a predetermined time (time for the sensor to shrink) after contact. If a predetermined period of time has elapsed after contact, the imaging time may be taken at the time of contact.

In the above embodiments and modifications, the first measurement point and the second measurement point are illustrated as the measurement points of the measurement target, but it goes without saying that there may be three or more measurement points, such as a third measurement point. stomach. The number of reference images corresponding to the number of measurement points may be stored in advance, such as preparing the same number of reference images as the number of measurement points.

It should be noted that the present invention is not limited to the above-described embodiments and modified examples, and can be embodied by modifying the constituent elements without departing from the scope of the invention. Various inventions may be formed by appropriately combining a plurality of components disclosed in the above embodiments and modified examples. Furthermore, some components may be deleted from all the components shown in the above embodiments and modified examples.

1 measurement system, 2 transport device, 4 measurement device, 6 control device, 7 imaging unit, 8 sensor, 10 information processing device, 12 transport control unit, 14 sensor drive unit, 20 main body, 22 spindle, 24 contact, 26 scale , 28 magnetic sensor, 30 ball spline bearing structure, 40 air cylinder mechanism, 110 input/output interface unit, 112 data processing unit, 114 data storage unit, 120 input unit, 122 output unit, 124 image acquisition unit, 126 measurement data acquisition unit , 128 display unit, 130 imaging processing unit, 132 measurement data management unit, 134 determination unit, 136 time measurement unit, 138 notification unit, 140 reference image storage unit, 142 measurement data storage unit, 204 measurement device, 208 sensor, 224 contact , F1 first surface, F2 second surface, P1 captured image, P2 specific portion, R measurement area, W measurement target.

Claims (8)

an image acquisition unit that acquires a captured image including the measurement target and the contact sensor;
a reference image storage unit that stores a reference image captured in advance at the time of measurement when the sensor is in contact with the measurement target;
a determination unit that determines whether the acquired captured image matches the reference image,
An information processing device that associates measurement data measured by the sensor when the match is determined with a measurement point of the measurement target corresponding to a captured image acquired when the match is determined. The information processing apparatus according to claim 1, wherein the determination unit determines whether a specific portion that is a part of the captured image matches a corresponding portion in the reference image. The measurement points of the measurement target include a first measurement point and a second measurement point,
The image acquisition unit includes, as the captured images, a first captured image obtained by first capturing performed when measuring the first measurement location, and a second captured image obtained by second imaging performed during measurement of the second measurement location. Acquired,
The reference image storage section stores in advance, as the reference images, a first reference image corresponding to the first captured image and a second reference image corresponding to the second captured image,
The information processing apparatus according to claim 1 or 2, wherein the determination unit determines whether each captured image matches a corresponding reference image. The measurement points of the measurement target include a first measurement point and a second measurement point,
further comprising a time difference storage unit that stores in advance a time difference between the measurement at the first measurement location and the measurement at the second measurement location,
After the measurement data is associated with the first measurement location based on the match between the captured image and the reference image, the measurement data measured by the sensor when the time difference has elapsed is transferred to the second measurement location. The information processing device according to claim 1 or 2, wherein the information processing device is associated with. 3 . The image forming apparatus according to claim 1 , further comprising a notification unit that executes a predetermined notification process when a match between the captured image and the reference image is not determined within a set time after the captured image is acquired. Information processing device. The reference image storage unit further stores in advance a second reference image captured in advance while the sensor is on standby before starting measurement;
The determination unit determines whether the captured image acquired during standby of the sensor and the second reference image match;
The information processing device according to claim 1 or 2, further comprising a notification unit that performs predetermined notification processing when it is determined that the captured image and the second reference image match. an imaging unit that images the measurement target;
a contact type sensor for measuring the measurement target;
an information processing unit that processes measurement data of the measurement target;
A measuring device comprising:
The information processing unit includes:
an image acquisition unit that acquires a captured image including the measurement target and the sensor;
a reference image storage unit that stores a reference image captured in advance at the time of measurement when the sensor is in contact with the measurement target;
a determination unit that determines whether the acquired captured image matches the reference image,
A measurement device that associates measurement data measured by the sensor when the match is determined with a measurement point of the measurement target corresponding to a captured image acquired when the match is determined. a step of storing a reference image captured in advance at the time of measurement when the contact type sensor is in contact with the measurement target;
acquiring a captured image including the measurement target and the sensor;
a step of determining a match between the acquired captured image and the reference image,
A measuring method, comprising associating measurement data measured by the sensor when the match is determined with a measurement point of the measurement target corresponding to a captured image acquired when the match is determined.

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