WO2021240947A1 - Dispositif de mesure de contrainte - Google Patents

Dispositif de mesure de contrainte Download PDF

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Publication number
WO2021240947A1
WO2021240947A1 PCT/JP2021/009407 JP2021009407W WO2021240947A1 WO 2021240947 A1 WO2021240947 A1 WO 2021240947A1 JP 2021009407 W JP2021009407 W JP 2021009407W WO 2021240947 A1 WO2021240947 A1 WO 2021240947A1
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WIPO (PCT)
Prior art keywords
image
layer
stress
display
sample
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PCT/JP2021/009407
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English (en)
Japanese (ja)
Inventor
祐介 横井
倫誉 山川
直也 藤原
健太 足立
啓晃 津島
智生 篠山
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株式会社島津製作所
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Publication of WO2021240947A1 publication Critical patent/WO2021240947A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows

Definitions

  • This disclosure relates to a stress measuring device.
  • the durability and performance of the sample are verified by repeatedly applying a load to the sample using a deformation tester.
  • strain is generated around the defect and the sample may break.
  • Patent Document 1 discloses a mechanoluminescent evaluation device that measures and evaluates the luminescence intensity of a stress-stimulated luminescent material.
  • a stress-stimulated luminescent material is placed on the surface of a sample, and the stress-stimulated luminescent material is made to emit light by applying an external force to the stress-stimulated luminescent material together with the sample.
  • the stress (strain) generated in the sample can be measured.
  • an object of the present disclosure is to provide a stress measuring device capable of easily performing editing work on an image captured by an image pickup device or an image processed image.
  • the stress measuring device in the present disclosure is a stress measuring device that measures the stress generated in the sample by detecting the light emission of the stress-stimulated luminescent material arranged on the surface of the sample, and is an imaging device that captures the light emitted by the stress-stimulated luminescent material.
  • a processing device for processing an image captured by the image pickup device, an operation unit for receiving a user's operation input, and a display device are provided.
  • the image displayed on the display device includes the first to third layers displayed on top of each other.
  • the first layer contains an image captured by an image pickup device.
  • the second layer contains the image processed by the processing device.
  • the third layer contains an image written from the operation unit.
  • this stress measuring device it is possible to easily perform editing work on an image captured by an imaging device or an image processed.
  • FIG. 1 It is a block diagram which shows the whole structure of the stress measuring apparatus according to an embodiment. It is a figure explaining the operation of the load application mechanism shown in FIG. It is a block diagram which shows the structure of a controller functionally. It is a flowchart explaining the processing procedure of the stress measurement of a sample using a stress measuring apparatus. It is a timing chart for demonstrating the operation of a light source, a camera and a holder in a stress measuring apparatus. It is a flowchart which shows the detail of the procedure of the image processing executed by the controller in step S50 of FIG. It is a figure explaining the layer composition of the image displayed on a display. It is a figure explaining the layer composition of the image displayed on a display.
  • FIG. 1 is a block diagram showing an overall configuration of a stress measuring device according to an embodiment of the present disclosure.
  • the stress measuring device 100 is a device that measures the stress (strain) generated in the test object 1 (hereinafter referred to as “sample 1”) by utilizing the light emission phenomenon of the stress-stimulated luminescent material. be.
  • the stress measuring device 100 can also be used to test the durability against the stress generated in the sample 1.
  • Sample 1 has flexibility, for example, a flexible sheet or a flexible fiber.
  • the flexible sheet can form, for example, a part of a flexible display or a wearable device of a communication terminal such as a smartphone or a tablet.
  • the flexible fiber can form, for example, a part of an optical fiber cable.
  • a stress-stimulated luminescent material 2 is arranged on the surface of the sample 1.
  • the stress-stimulated luminescent material 2 is, for example, a stress-stimulated luminescent sheet containing a stress-stimulated luminescent material, and is arranged on the surface of at least a predetermined region of sample 1. This predetermined region is set to include a region where stress is generated when the flexible sheet is bent (a deformed region of the flexible sheet).
  • the stress-stimulated luminescent material 2 is integrally bent with the sample 1 to generate stress (strain).
  • the stress-stimulated luminescent material 2 is a member that emits light by a mechanical stimulus from the outside, and conventionally known ones can be used.
  • the stress-stimulated luminescent material 2 has a property of emitting light by strain energy applied from the outside, and its emission intensity changes according to the strain energy.
  • the stress-stimulated luminescent material 2 is a solid solution of an element that is the center of light emission in the skeleton of a crystal, and by selecting an inorganic matrix material and an element that is the center of light emission, it emits light at various wavelengths from ultraviolet to visible to infrared. Can be made to.
  • Defect-controlled strontium aluminate (SrAl 2 O 4 : Eu, which emits green light) with europium added as the emission center and zinc sulfide (ZnS:) whose structure is controlled by adding manganese as the emission center are typical compositions. Mn, glows yellow-orange), structure-controlled barium-calcium titanate ((Ba, Ca) TiO 3 : Pr, emits red), etc., to which placeodim is added as the emission center.
  • the stress measuring device 100 includes a load applying mechanism for applying a load to the sample 1.
  • the load applying mechanism is configured to be able to reproduce the load applied to the flexible display during the folding operation on the smartphone.
  • the load applying mechanism has a holder 10 and a first driver 20.
  • the holder 10 supports the sample 1 so that the surface of the sample 1 is located on the upper side (upper side of the paper surface in FIG. 1).
  • the first driver 20 is configured to be able to bend the sample 1 by shifting the holder 10 between the first posture and the second posture.
  • a deformation tester disclosed in Japanese Patent Application Laid-Open No. 2019-39743 can be applied.
  • the holder 10 has a first mounting plate 11, a second mounting plate 12, and a drive shaft 13.
  • the first mounting plate 11 has a rectangular main surface 11a.
  • the second mounting plate 12 has a rectangular main surface 12a.
  • the sample 1 is attached to the main surface 11a and the main surface 12a by adhering the back surface thereof.
  • the first driver 20 is attached to the base of the drive shaft 13.
  • the drive shaft 13 is rotatably supported with its central axis parallel to the X axis.
  • the first driver 20 includes a motor, a transmission, and a control unit (not shown) inside, and rotates the drive shaft 13 in the forward and reverse directions around the central shaft at a predetermined rotation angle and rotation speed. Let me.
  • the rotation angle and rotation speed of the drive shaft 13 are variable, so that the bending angle and bending speed in the bending test of the sample 1 described later can be appropriately changed.
  • the second mounting plate 12 is non-rotatably mounted on the drive shaft 13.
  • the second mounting plate 12 rotates with the rotation of the drive shaft 13.
  • the first mounting plate 11 also rotates.
  • FIG. 2 is a diagram illustrating the operation of the load applying mechanism shown in FIG. FIG. 2 shows a state in which the first mounting plate 11, the second mounting plate 12, and the sample 1 attached to these are viewed from the X-axis direction.
  • 2 (B) and 2 (C) show a state in which the sample 1 is bent from the state of FIG. 2 (A).
  • the sample 1 has a stress-stimulated luminescent material 2 arranged on the surface of the sample 1.
  • the load applying mechanism of FIG. 1 rotates the main surface 11a and the main surface 12a in a state where the end 12ac and the end 11ac are always parallel to the end 12ac and the end 11ac and the distance D1 is kept constant.
  • the portion of the sample 1 located between the vicinity of the end portion 12ac and the vicinity of the end portion 11ac is deformed, but the rest of the other sample 1 is hardly deformed.
  • the stress measuring device 100 further includes a light source 31, a housing 15, a camera 40, a second driver 42, a third driver 32, and a controller 50.
  • the light source 31 is arranged above the sample 1 and is configured to irradiate the stress-stimulated luminescent material 2 with excitation light. Upon receiving the excitation light, the stress-stimulated luminescent material 2 transitions to the light emitting state.
  • the excitation light is preferably light having a wavelength range of ultraviolet light to blue light.
  • As the excitation light light contained in the wavelength range of 10 to 600 nm (including the ultraviolet to visible light region) can be used.
  • an ultraviolet lamp, an LED (Light Emitting Diode), or the like can be used.
  • the stress luminescent material 2 is irradiated with the excitation light from two directions, but the light source 31 irradiates the stress-stimulated luminescent material 2 with the excitation light from one direction or three or more directions. It may be configured.
  • the holder 10 and the light source 31 are housed in the housing 15.
  • the housing 15 can be used as a dark room while the light source 31 is stopped.
  • the third driver 32 supplies electric power for driving the light source 31.
  • the third driver 32 can control the amount of excitation light emitted from the light source 31, the irradiation time of the excitation light, and the like by controlling the power supplied to the light source 31 in response to a command received from the controller 50.
  • the camera 40 is arranged above the sample 1 so as to include the stress-stimulated luminescent material 2 located on the predetermined region of the sample 1 in the imaging field of view.
  • the camera 40 is attached to the ceiling surface of the housing 15.
  • the camera 40 is arranged so that the focus position is located at at least one point in the predetermined region of the sample 1. It is preferable that at least one point in the predetermined region is located at the central portion of the bending of the sample 1.
  • the camera 40 is an image pickup device including an optical system such as a lens and an image pickup element.
  • the image pickup device is realized by, for example, a CCD (Charge Coupled Device) sensor, a CMOS (Complementary Metal Oxide Semiconductor) sensor, or the like.
  • the image pickup device generates an image pickup image by converting the light incident from the stress luminescent material 2 via the optical system into an electric signal.
  • the camera 40 is configured to capture the light emission of the stress-stimulated luminescent material 2 located on the predetermined region at a predetermined frame rate when a load is applied to the sample 1.
  • the image data generated by the image pickup of the camera 40 is transmitted to the controller 50.
  • the second driver 42 is configured to be able to change the focus position of the camera 40 in response to a command received from the controller 50.
  • the second driver 42 can adjust the focus position of the camera 40 by moving the camera 40 along the Z-axis direction and the Y-axis direction shown in FIG.
  • the second driver 42 has a motor that rotates a feed screw that moves the camera 40 in the Z-axis direction and the Y-axis direction, and a motor driver that drives the motor.
  • the feed screw is rotationally driven by the motor, so that the camera 40 is positioned at a designated position within a predetermined range in each of the Z-axis and Y-axis directions.
  • the second driver 42 transmits the position information indicating the position of the camera 40 to the controller 50.
  • the controller 50 controls the entire stress measuring device 100.
  • the controller 50 has a processor 501, a memory 502, an input / output interface (I / F) 503, and a communication I / F 504 as main components. Each of these parts is communicably connected to each other through a bus (not shown).
  • the processor 501 is typically an arithmetic processing unit such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit).
  • the processor 501 controls the operation of each part of the stress measuring device 100 by reading and executing the program stored in the memory 502. Specifically, the processor 501 realizes each of the processes of the stress measuring device 100 described later by executing the program.
  • FIG. 1 illustrates a configuration in which the number of processors is singular, the controller 50 may have a configuration having a plurality of processors.
  • the memory 502 is realized by a non-volatile memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), and a flash memory.
  • the memory 502 stores a program executed by the processor 501, data used by the processor 501, and the like.
  • the input / output I / F 503 is an interface for exchanging various data between the processor 501 and the first driver 20, the third driver 32, the camera 40, and the second driver 42.
  • the communication I / F 504 is a communication interface for exchanging various data between the stress measuring device 100 and another device, and is realized by an adapter, a connector, or the like.
  • the communication method may be a wireless communication method using a wireless LAN (Local Area Network) or the like, or a wired communication method using USB (Universal Serial Bus) or the like.
  • a display 60 and an operation unit 70 are connected to the controller 50.
  • the display 60 is composed of a liquid crystal panel or the like capable of displaying an image.
  • the operation unit 70 receives a user's operation input to the stress measuring device 100.
  • the operation unit 70 is typically composed of a touch panel, a keyboard, a mouse, and the like. As will be described later, in the present embodiment, the user can write (memo writing, etc.) from the operation unit 70 on the image displayed on the display 60.
  • the controller 50 is communicatively connected to the first driver 20, the third driver 32, the camera 40, and the second driver 42.
  • the communication between the controller 50 and the first driver 20, the third driver 32, the camera 40 and the second driver 42 may be realized by wireless communication or wired communication.
  • FIG. 3 is a block diagram functionally showing the configuration of the controller 50.
  • the controller 50 includes a stress control unit 61, a light source control unit 62, an image pickup control unit 63, a measurement control unit 64, a data acquisition unit 65, and a data processing unit 66. These are functional blocks realized based on the processor 501 executing a program stored in memory 502.
  • the stress control unit 61 controls the operation of the first driver 20. Specifically, the stress control unit 61 controls the operating speed, operating time, and the like of the first driver 20 according to preset measurement conditions. By controlling the operating speed and operating time of the first driver 20, the rotation angle, rotation speed, and the like of the drive shaft 13 in the holder 10 can be adjusted. Thereby, the bending angle, the bending speed, and the like of the sample 1 can be adjusted.
  • the light source control unit 62 controls the drive of the light source 31 by the third driver 32. Specifically, the light source control unit 62 generates a command for instructing the magnitude of the electric power supplied to the light source 31 and the supply time of the electric power to the light source 31 based on the preset measurement conditions. , The generated command is output to the third driver 32. By controlling the power supplied to the light source 31 by the third driver 32 in accordance with the command, the amount of excitation light emitted from the light source 31, the irradiation time of the excitation light, and the like can be adjusted.
  • the image pickup control unit 63 controls the movement of the camera 40 by the second driver 42. Specifically, the image pickup control unit 63 follows the movement of the predetermined area of the sample 1 based on the preset measurement conditions and the position information of the camera 40 input from the second driver 42, and causes the camera 40 to move. Generate a command to move. The image pickup control unit 63 outputs the generated command to the second driver 42. By moving the camera 40 according to the command, the second driver 42 can maintain the focus position of the camera 40 at at least one point in the predetermined area of the sample 1.
  • the image pickup control unit 63 further controls the image pickup by the camera 40. Specifically, the image pickup control unit 63 controls the camera 40 so as to take an image of the sample 1 at least when a load is applied according to preset measurement conditions.
  • the measurement conditions for imaging include the frame rate of the camera 40.
  • the data acquisition unit 65 acquires the image data generated by the imaging of the camera 40, and transfers the acquired image data to the data processing unit 66.
  • the data processing unit 66 measures the mechanoluminescence of the stress-stimulated luminescent material 2 by performing known image processing on the image data obtained by imaging the camera 40 when a load is applied.
  • the data processing unit 66 generates, for example, an image showing the distribution of the stress-stimulated luminescence intensity in the stress-stimulated luminescent material 2.
  • the data processing unit 66 can display an image captured by the camera 40 and an image showing the distribution of the mechanoluminescent intensity in the mechanoluminescent body 2 on the display 60.
  • the measurement control unit 64 comprehensively controls the stress control unit 61, the light source control unit 62, the image pickup control unit 63, the data acquisition unit 65, and the data processing unit 66. Specifically, the measurement control unit 64 gives a control command to each unit based on the measurement conditions input to the operation unit 70, the information of the sample 1, and the like.
  • the user can write to the image displayed on the display 60 from the operation unit 70.
  • operations such as surrounding a desired area with a frame and writing a memo can be performed from the operation unit 70.
  • the operation unit 70 designates the display position of the image to be written (the above frame, text, etc.) on the display 60 according to the operation input.
  • the image written from the operation unit 70 is displayed on the display 60 on a layer different from the image captured by the camera 40 and the image showing the distribution of the stress luminescence intensity.
  • the image captured by the camera 40 and the processed image showing the distribution of the stress luminescence intensity are also displayed on different layers.
  • the layer structure of the image displayed on the display 60 will be described in detail later.
  • FIG. 4 is a flowchart illustrating a processing procedure for stress measurement of sample 1 using the stress measuring device 100.
  • sample 1 is prepared with reference to FIG. 4 (step S10).
  • the sample 1 is mounted on the main surface 11a of the first mounting plate 11 and the main surface 12a of the second mounting plate 12 of the holder 10.
  • a deformation region is formed in the central portion of the sample 1 in the lateral direction (Y direction).
  • This deformation region has a band-like shape extending in the vertical direction (X direction).
  • the stress-stimulated luminescent material 2 is adhered to the surface of the sample 1 so as to be located at least on the deformation region of the sample 1.
  • the stress illuminant 2 has a rectangular shape having a size similar to that of the sample 1, and is arranged so as to cover the entire surface of the sample 1.
  • the stress-stimulated luminescent material 2 can be formed, for example, by attaching a stress-stimulated luminescent sheet containing a stress-stimulated luminescent material to a predetermined region of sample 1.
  • the stress-stimulated luminescent material 2 is, for example, defect-controlled strontium aluminate (SrAl 2 O 4 : Eu) to which europium is added, and exhibits green light emission.
  • the stress-stimulated luminescent material 2 is irradiated with excitation light (for example, ultraviolet rays) from the light source 31 (step S20).
  • excitation light for example, ultraviolet rays
  • the stress-stimulated luminescent material 2 receives excitation light and transitions to a light emitting state.
  • a load (bending load) is applied to the sample 1 by driving the first driver 20 to bend the sample 1 (step S30). As shown in FIG. 2, the sample 1 is bent by rotating the drive shaft 13 in the positive direction by the first driver 20.
  • the camera 40 captures the light emission of the stress-stimulated luminescent material 2 provided on the surface of the sample 1 (step S40). Specifically, the camera 40 generates a number of still images according to the frame rate while the load (bending load) is applied to the sample 1.
  • the controller 50 executes predetermined image processing on the image captured by the camera 40 (step S50). Specifically, the controller 50 detects the stress generation portion according to the light emission distribution of the stress luminescent body 2 for each of the number of images generated in step S40 according to the frame rate of the camera 40. For example, a region where the emission intensity is higher than the threshold value is detected as a stress generation site.
  • the image displayed on the display 60 is a layer of the image captured by the camera 40 (first layer) and an image processed by the controller 50 (detected). It is divided into a layer (second layer) of the image of the stress generation site) and a layer (third layer) of the image written by the user from the operation unit 70. Then, the image on which each layer is superimposed is displayed on the display 60 (step S60). This makes it possible to easily edit the captured image and the detected image of the stress generation portion on the display 60. This point will be explained in detail later.
  • FIG. 5 is a timing chart for explaining the operation of the light source 31, the camera 40, and the holder 10 in the stress measuring device 100.
  • FIG. 5 shows a waveform showing the irradiation timing of the excitation light in the light source 31, a waveform showing the imaging timing of the camera 40, and a waveform showing the operation timing of the holder 10 by the first driver 20.
  • the operation timing of the holder 10 is displayed by "number of tests".
  • the operation of transitioning the sample 1 from a flat state (FIG. 2 (A)) to a bent state (FIG. 2 (C)) is referred to as a single bending test (hereinafter, also simply referred to as "test"). Therefore, one test is performed in the first half of one operation cycle of the first driver 20. After one test, sample 1 is returned to a flat state. In the example of FIG. 5, the test is repeated.
  • the first test is also referred to as "T1" and the second test is also referred to as "T2".
  • the stress measuring device 100 measures the light emission of the stress luminescent material 2 arranged in a predetermined region including at least the region where the sample 1 is bent during the execution of the test.
  • test T1 is started at time t3.
  • the excitation light is irradiated from the light source 31 to the stress-stimulated luminescent material 2 at the time Ti from the time t1 to the time t2 before the time t3.
  • the time Tw from the time t2 to the time t3 corresponds to the waiting time from the end of the irradiation of the excitation light to the start of the measurement.
  • the image pickup by the camera 40 is started. That is, the start timing of the test T1 and the start timing of the image pickup by the camera 40 are matched. Imaging by the camera 40 is continuously executed until the test T1 is completed at time t4. That is, the test time Tm from the time t3 to the time t4 corresponds to the measurement time of the stress luminescence.
  • Tm (measurement time)
  • a number of still images corresponding to the frame rate of the camera 40 are generated.
  • a set of m frames (still images) acquired by imaging the camera 40 in one stress measurement process is also referred to as a "measurement set”.
  • the measurement set obtained by the first stress measurement process is also referred to as “S1”
  • the measurement set obtained by the second stress measurement process is also referred to as “S2”.
  • Each measurement set is composed of a frame F1 to a frame Fm.
  • FIG. 6 is a flowchart showing details of the image processing procedure executed by the controller 50 in step S50 of FIG.
  • the controller 50 first sets the variable i to 1 (step S10) and acquires an image of the frame Fi (step S20).
  • the controller 50 detects a region (stress generation site) in which the emission intensity is higher than the threshold value Is in the set ROI in the acquired image (step S30).
  • the threshold value Is is appropriately set to the emission intensity level that requires observation of the stress generation site.
  • the ROI may be the entire captured image or a region set by the user.
  • the controller 50 stores the image of the region (stress generation site) detected in step S30 in the memory 502 (FIG. 1) as the detection layer data of the frame Fi (step S40). That is, the detection layer data is the data of the layer (second layer) of the image (the image of the detected stress generation portion) processed by the controller 50.
  • the controller 50 determines whether or not the variable i is the number of frames m or more (step S50). When the variable i is smaller than the number of frames m (NO in step S50), the controller 50 increments the variable i by 1 (step S60) and returns the process to step S20. That is, the processes of steps S20 to S40 are repeatedly executed until the variable i reaches the number of frames m.
  • step S50 when it is determined in step S50 that the variable i has reached the number of frames m (YES in step S50), the controller 50 shifts the process to the end.
  • FIG. 7 and 8 are diagrams illustrating the layer configuration of the image displayed on the display 60.
  • FIG. 7 shows the layer structure in a plane
  • FIG. 8 shows the layer structure in a cross section.
  • the image displayed on the display 60 is composed of layers L1 to L4.
  • the layer L1 is a layer of an image captured by the camera 40 (acquired image layer).
  • the layer L2 is an image layer processed by the controller 50. That is, the layer L2 is a layer on which the stress generation portion detected by the controller 50 is displayed (detection layer).
  • Layers L3 and L4 are layers of images written by the user from the operation unit 70.
  • the layer L3 is provided for each frame Fi, and is a layer on which the edited contents (memo writing, area specification, etc.) for each frame Fi are displayed (individual layer).
  • the layer L4 is a layer that is commonly provided in the frames F1 to Fm and displays common editing contents (memo writing, area specification, etc.) in the frames F1 to Fm (common layer).
  • the layers L1 to L4 are stacked in this order, but the stacking order of the layers L1 to L4 is not limited to the order shown in the figure.
  • the data of the layer L1 is stored in the memory 502 for each frame Fi of the camera 40 in step S40 of FIG.
  • the data of the layer L2 is stored in the memory 502 each time the processing for the image of the frame Fi is executed in the image processing shown in FIG.
  • the data of the layer L3 is specified to be an individual edit for the image of the frame Fi displayed on the display 60 and written to the image displayed on the display 60 from the operation unit 70, the data is written. It is associated with the frame Fi and stored in the memory 502.
  • the operation unit 70 When the operation unit 70 writes to the image displayed on the display 60 by designating that the data of the layer L4 is a common edit for the images of each frame F1 to Fm, each frame. It is stored in the memory 502 as data common to F1 to Fm.
  • the designation of individual editing for the frame Fi and the designation of the common editing for the frames F1 to Fm can be performed, for example, by inputting or not inputting to the check box displayed on the display 60 (described later). ).
  • the stress measuring device 100 is configured to be able to switch the display / non-display of each layer L1 to L4 on the display 60.
  • the layer L1 of the captured raw image can be hidden and the layers L2 to L4 can be displayed.
  • the display / non-display switching for each of the layers L1 to L4 can be performed, for example, by the presence / absence of an input to the check box displayed on the display 60 (described later).
  • FIG. 9 is a diagram showing an image displayed on the display 60 for each layer. With reference to FIG. 9, it is assumed that m images of frames F1 to Fm are captured in a certain measurement set Sj according to the frame rate of the camera 40.
  • the image captured by the camera 40 is stored in the memory 502 as image data of the layer L1 (acquired image layer) for each frame F1 to Fm.
  • the controller 50 detects a stress generation site according to the light emission distribution of the stress luminescent material 2 in each image captured by the camera 40. In this example, a region where the emission intensity is higher than the threshold value is detected as a stress generation site. Then, the detected image of the stress generation portion is stored in the memory 502 as image data of the layer L2 (detection layer) for each frame F1 to Fm.
  • the user can specify that the image of the frame Fi displayed on the display 60 is individually edited, and write the image being displayed from the operation unit 70.
  • a memo can be written on the displayed image, or a desired area can be surrounded by a frame.
  • the edited content in this case is stored in the memory 502 as image data of the layer L3 (individual layer) for each frame F1 to Fm.
  • the text data of the memo 80 written from the operation unit 70 for the detected stress generation portion during the display of the image of the frame F2 is associated with the frame F2 together with the information of the display position. It is stored in the memory 502 as the data of the layer L3 (individual layer).
  • the user can specify that the editing is common to the images of each frame F1 to Fm, and write in common to the images of each frame F1 to Fm from the operation unit 70.
  • a common memo can be written in the images of the frames F1 to Fm, and a desired region common to the images of the frames F1 to Fm can be surrounded by a frame.
  • the edited content in this case is stored in the memory 502 as image data of the layer L4 (common layer) common to the frames F1 to Fm.
  • the data of the frame 82 and the memo 84 for the stress generation portion commonly and erroneously detected in the images of all frames F1 to Fm due to the uneven coating of the stress luminescent material 2 are combined with the information of the display position in the layer L4 (common). It is stored in the memory 502 as the data of the layer).
  • 10A to 10C are diagrams showing a display example of the display 60.
  • 10A to 10C show examples of displaying images corresponding to frames F1, F2, and Fm in one measurement set, respectively.
  • the display 60 can display layers L1 to L4 (FIG. 9) superimposed on the image display area 90. Whether or not to display each layer L1 to L4 in the area 90 can be switched depending on whether or not the check box corresponding to each layer of the layer display setting unit 92 is input or not.
  • the layer L4 common layer
  • the layer L4 is displayed, and when the check is removed, the layer L4 is hidden.
  • layer L3 (individual layer) will be displayed, and if you uncheck it, layer L3 will be hidden. If the "Detection” check box is checked, the layer L2 (detection layer) is displayed, and if the check box is unchecked, the layer L2 is hidden. If the "Acquisition” check box is checked, the layer L1 (acquired image) is displayed, and if the check box is unchecked, the layer L1 is hidden.
  • a memo setting unit 94 is further provided on the display 60. If the "common" check box of the memo setting unit 94 is checked, writing common to all frames F1 to Fm can be performed from the operation unit 70.
  • the image of the frame F1 is displayed (FIG. 10A)
  • a check is entered in the "common” check box, and in the area 90, the portion of the uneven coating is surrounded by a frame and a memo of "uneven coating" is displayed. It has been written.
  • This written data is stored in the memory 502 as data of the layer L4 (common layer), and if the "common" check box of the layer display setting unit 92 is checked, an image corresponding to another frame is displayed. It is also displayed at the time of (FIG. 10B, FIG. 10C).
  • FIG. 11 is a flowchart showing a processing procedure of the controller 50 for an input in the memo setting unit 94 shown in FIGS. 10A to 10C.
  • the controller 50 determines whether or not the user editing work (writing of a memo, a frame, etc.) in the image display area 90 (FIGS. 10A to 10C) has been performed from the operation unit 70 (step). S110). If the user editing work has not been performed (NO in step S110), the subsequent processing is not executed and the processing is transferred to the return.
  • the controller 50 confirms the check box of the memo setting unit 94 of the display 60, and the writing from the operation unit 70 is for the common layer (layer L4). It is determined whether it is for an individual layer (layer L3) or for an individual layer (layer L3) (step S120).
  • step S120 When a check is entered in the "common" check box in the memo setting unit 94 and it is determined in step S120 that the writing from the operation unit 70 is for the common layer, the controller 50 determines that the operation unit 70 is for the operation unit 70.
  • the data written from the above is stored in the memory 502 as the data of the common layer (layer L4) (step S130).
  • step S120 when a check is entered in the "individual" check box in the memo setting unit 94 and it is determined in step S120 that the writing from the operation unit 70 is for the individual layer, the controller 50 operates.
  • the data written from the unit 70 is associated with the displayed frame and stored in the memory 502 as the data of the individual layer (layer L3) (step S140).
  • FIG. 12 is a flowchart showing a processing procedure for an input in the layer display setting unit 92 shown in FIGS. 10A to 10C.
  • the display 60 displays the common layer (layer L4) when the check box of “common” of the layer display setting unit 92 is checked (YES in step S210) (step S212). ), If the "common" check box is not checked (NO in step S210), the common layer (layer L4) is hidden (step S214).
  • the display 60 displays an individual layer (layer L3) when a check is entered in the "individual" check box of the layer display setting unit 92 (YES in step S220) (step S222), and "individual”. If the check box of is not checked (NO in step S220), the individual layer (layer L3) is hidden (step S224).
  • step S230 when the check box of "Detection" of the layer display setting unit 92 is checked (YES in step S230), the display 60 displays the detection layer (layer L2) (step S232) and "detects". If the check box of is not checked (NO in step S230), the detection layer (layer L2) is hidden (step S234).
  • step S240 when the check box of "Acquisition" of the layer display setting unit 92 is checked (YES in step S240), the display 60 displays the acquired image layer (layer L1) (step S242). If the "Acquisition” check box is not checked (NO in step S240), the acquired image layer (layer L1) is hidden (step S244).
  • the display image of the display 60 is formed into a layer structure, and the image written by the user from the operation unit 70 is processed by the image captured by the camera 40 and the controller 50. Since it is configured in a layer different from the image (image of the detected stress generation site), it is possible to easily edit the image captured by the camera 40 and the image of the detected stress generation site. ..
  • a common user writing layer (layer L4) is provided for each frame F1 to Fm, common writing to the images of each frame F1 to Fm can be easily performed. ..
  • an individual user writing layer (layer L3) is provided for each frame Fi, individual writing can be performed for each frame Fi.
  • the stress measuring device is a stress measuring device that measures the stress generated in a sample by detecting the light emission of the stress-stimulated luminescent material arranged on the surface of the sample, and is emitted by the stress-stimulated luminescent material. It includes an image pickup device for capturing light, a processing device for processing an image captured by the image pickup device, an operation unit for receiving a user's operation input, and a display device.
  • the image displayed on the display device includes the first to third layers displayed on top of each other. The first layer contains an image captured by an image pickup device.
  • the second layer contains the image processed by the processing device.
  • the third layer contains an image written from the operation unit.
  • the display image of the display device is configured as a layer, and the image written by the user from the operation unit is a layer different from the image captured by the image pickup device and the image processed by the processing device. Therefore, it is possible to easily perform editing work on the image captured by the image pickup device and the image processed by the processing device.
  • the image pickup device is configured to continuously image at a predetermined frame rate.
  • the first and second layers are provided for each frame of the image pickup apparatus.
  • the third layer is commonly provided in a plurality of frames.
  • the image pickup device is configured to continuously image at a predetermined frame rate.
  • the first and second layers are provided for each frame of the image pickup apparatus.
  • the third layer is provided for each frame.
  • the image pickup device is configured to continuously image at a predetermined frame rate.
  • the first and second layers are provided for each frame of the image pickup apparatus.
  • the third layer includes a common layer commonly provided for a plurality of frames and an individual layer provided for each frame.
  • editing work common to a plurality of frames can be easily and easily performed without performing editing work for each frame while enabling editing work for each individual frame.
  • the stress measuring device sets whether or not to display each of the first to third layers on the display device. Further provided with a setting unit to be used.
  • the display / non-display of a specific layer can be switched, so that the display state desired by the user can be formed.
  • the operation unit designates the display position of the written image to the display device.
  • the image of the third layer includes text data input from the operation unit.
  • a desired memo, a frame, or the like can be left in a desired display area.
  • the embodiments disclosed this time should be considered to be exemplary and not restrictive in all respects.
  • the scope of the present invention is shown by the scope of claims rather than the description of the embodiment described above, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

Dispositif de mesure de contrainte (100) étant pourvu de ce qui suit : un appareil photo (40) qui capture une image de la lumière émise par un corps émettant de la lumière sous contrainte (2) ; un dispositif de commande (50) qui traite l'image capturée par l'appareil photo (40) ; une unité de fonctionnement (70) qui reçoit une entrée de fonctionnement d'un utilisateur ; et un dispositif d'affichage (60). Une image affichée sur le dispositif d'affichage (60) comprend des couches (L1 à L4) affichées de manière superposée. La couche (L1) comprend l'image capturée par l'appareil photo (40). La couche (L2) comprend l'image traitée par le dispositif de commande (50). Les couches (L3, L4) comprennent chacune une image écrite par l'unité de fonctionnement (70).
PCT/JP2021/009407 2020-05-26 2021-03-10 Dispositif de mesure de contrainte WO2021240947A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006284393A (ja) * 2005-03-31 2006-10-19 National Institute Of Advanced Industrial & Technology 応力測定システム
JP2015504161A (ja) * 2011-12-29 2015-02-05 エレクトロ サイエンティフィック インダストリーズ インコーポレーテッド 分光データ表示システム及び方法
US20150103333A1 (en) * 2013-10-10 2015-04-16 GunJin Yun Apparatus for quantitative measurements of stress distributions from mechanoluminescence materials
JP2019002702A (ja) * 2017-06-12 2019-01-10 株式会社トヨタプロダクションエンジニアリング 歪み量算出装置、歪み量算出方法及び歪み量算出プログラム
JP2020034468A (ja) * 2018-08-31 2020-03-05 株式会社トヨタプロダクションエンジニアリング 応力発光計測装置及び応力発光計測方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006284393A (ja) * 2005-03-31 2006-10-19 National Institute Of Advanced Industrial & Technology 応力測定システム
JP2015504161A (ja) * 2011-12-29 2015-02-05 エレクトロ サイエンティフィック インダストリーズ インコーポレーテッド 分光データ表示システム及び方法
US20150103333A1 (en) * 2013-10-10 2015-04-16 GunJin Yun Apparatus for quantitative measurements of stress distributions from mechanoluminescence materials
JP2019002702A (ja) * 2017-06-12 2019-01-10 株式会社トヨタプロダクションエンジニアリング 歪み量算出装置、歪み量算出方法及び歪み量算出プログラム
JP2020034468A (ja) * 2018-08-31 2020-03-05 株式会社トヨタプロダクションエンジニアリング 応力発光計測装置及び応力発光計測方法

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