JP2010072739A - Data collection device - Google Patents

Abstract

The present invention provides a data collection device capable of clarifying the relationship between an actual workpiece abnormality and an operation state of a production facility and sufficiently analyzing the abnormality.
A high-speed imaging means, an electric signal input unit for inputting an electric signal, a synchronizing means for synchronizing image data picked up by the high-speed imaging means and voltage change data of the electric signal, First storage means 74 for storing image data obtained by overwriting new image data on old image data and image data picked up by the high-speed image pickup means 34, and voltage change of the electric signal input from the electric signal input unit The second storage means 78 that stores the voltage change data by overwriting the old voltage change data with the new voltage change data, and the image data captured by the high-speed imaging means 34 and the voltage change data of the electrical signal at the same time. Display means 32 for displaying.
[Selection] Figure 5

Description

  The present invention relates to a data collection device that collects data.

  In production facilities and the like, the line may be temporarily stopped due to the occurrence of defective products (so-called chocolate stop). Such a chocolate stop itself does not pose a problem because it operates normally again by resetting a workpiece or the like. However, if the number of chocolate stops frequently occurs, the operating rate decreases, so that it becomes necessary to investigate the cause of the chocolate stop.

  For example, when a base paper such as toilet paper is manufactured, defects such as perforations, tears, and folded doubles may occur in a roll (called a log) around which the base paper is wound. In order to detect such a defect in the log, an apparatus for detecting a defect by capturing a raw paper traveling on a roll with a high-speed camera and processing the captured image in an image processing apparatus is already known. (For example, refer to Patent Document 1).

  Further, in the welded shape steel production line, a method for monitoring the bead removal state of the weld bead part, which is obtained by imaging the bead removal part of the shape steel with a high-speed camera and processing the captured data as a stereoscopic still image. A method for determining normality / abnormality is known (see, for example, Patent Document 2).

Note that the abnormality determination means described above is intended to detect abnormality by image processing means from image data captured by the imaging means.
However, a data collection device that stores various numerical values of processing executed in a production facility or the like is also conventionally known (see, for example, Patent Document 3).

JP 2008-134107 A JP-A-5-261553 JP 2006-226846 A

  In a production facility monitoring apparatus using a high-speed camera as described above, image data captured by a high-speed camera is subjected to image processing to determine defects and abnormalities. However, there is a problem that the relationship between the actual work abnormality and the production equipment operation state is not clear.

  Similarly, the conventional data collection device can recognize the relationship between mere numerical values and time, but the specific work situation is unknown, and the actual work abnormalities and the operational status of the production facility are still unknown. There is a problem that the relevance is not clear.

  Therefore, the present invention is made to solve the above-described problems, and the object of the present invention is to clarify the relationship between the actual work abnormality and the operation state of the production facility, and to sufficiently analyze the abnormality. It is to provide a collecting device.

In order to achieve the above object, the present invention comprises the following arrangement.
That is, according to the data collection device of the present invention, a high-speed imaging unit that can image an object at an arbitrary frame rate, an electrical signal input unit that inputs an electrical signal, and an image captured by the high-speed imaging unit Synchronizing means for synchronizing data and voltage change data of the electrical signal, and image data captured by the high-speed imaging means are stored for a plurality of frames, and newly captured image data is calculated based on the number of frames that can be stored. The first storage means for storing the image data by overwriting the new image data over the old image data, and the voltage change data of the electric signal input from the electric signal input unit for a predetermined time. If the voltage change data of the newly input electrical signal exceeds the predetermined storable time, new voltage change data is added to the old voltage change data. Second storage means for storing the overwrite to the voltage change data, the high-speed imaging device is characterized by comprising a display means for displaying the voltage change data of the image data and the electrical signal obtained by imaging the same time.
By adopting this configuration, while grasping the actual work status in the production facility, etc., with images, the electrical signals or noise data, vibration data, etc. output from the production facilities and various sensors are synchronized with this image. It can be displayed in synchronization. For this reason, it is possible to clarify the relationship between the workpiece state and the operation state of the production facility.

Further, when the voltage value of the voltage change data exceeds or falls below a preset threshold value, the image data picked up by the high-speed imaging means after a predetermined time has elapsed since the threshold value was exceeded or fallen below Level trigger means for stopping storage in the first storage means and storage of the voltage change data of the electrical signal in the second storage means may be provided.
According to this configuration, during normal operation, the image data and the voltage change data of the electric signal are always stored in an overwritten state, but when the electric signal changes (when the abnormal state exceeds or falls below the threshold) ) Is stored for a predetermined time from the time of change, and thereafter the storage of the image data and the voltage change data of the electric signal is stopped, so that each data before and after the change is surely saved. And by redisplaying the data before and after the change, you can pursue the cause of the change, etc., and clarify the relationship between the work status and the operating status of the production equipment, etc. be able to.

Further, when there is a change in the image data picked up by the high-speed image pickup means, the image data picked up by the high-speed image pickup means is sent to the first storage means after a predetermined time has elapsed since the change. And image trigger means for stopping the storage of the voltage change data of the electrical signal in the second storage means.
According to this configuration, during normal operation, the image data and the voltage change data of the electric signal are always stored in an overwritten state, but when the image changes (when there is some movement in the work or production equipment). Is stored for a predetermined time from the time of change and thereafter stops storing the image data and the voltage change data of the electric signal, so that each data before and after the change is reliably saved. And by redisplaying the data before and after the change, you can pursue the cause of the change, etc., and clarify the relationship between the work status and the operating status of the production equipment, etc. be able to.

The image trigger means may further include trigger detection area setting means for setting a trigger detection area for specifying an image position where the image trigger means changes.
According to this configuration, it is possible to specify which part of the object being imaged is to be detected for change.

  The trigger detection area setting means may be provided so that the size and position of the trigger detection area in the display means can be changed.

  The image trigger means may store the first storage of image data when at least one of luminance and color difference of image data changes by a predetermined threshold or more in the set trigger detection area. The storage in the means and the storage of the voltage change data of the electric signal in the second storage means may be stopped.

Furthermore, when there is a change in the waveform shape of the voltage change data of the electric signal input from the electric signal input unit, the image data picked up by the high-speed image pickup means after a predetermined time has elapsed since the change. Waveform triggering means for stopping storage in the first storage means and storage of the voltage change data of the electrical signal in the second storage means may be provided.
According to this configuration, during normal operation, the image data and the voltage change data of the electric signal are always stored in an overwritten state. However, when the waveform shape of the electric signal changes (for example, changes from a sine wave to a triangular wave) ) Is stored for a predetermined time from the time of change, and thereafter the storage of the image data and the voltage change data of the electric signal is stopped, so that each data before and after the change is surely saved. And by redisplaying the data before and after the change, you can pursue the cause of the change, etc., and clarify the relationship between the work status and the operating status of the production equipment, etc. be able to.

In addition, after a predetermined time has elapsed from an arbitrary time, storage of the image data captured by the high-speed imaging unit in the first storage unit and storage of the voltage change data of the electrical signal in the second storage unit Manual trigger means for stopping the operation may be provided.
According to this configuration, during normal operation, the image data and the voltage change data of the electrical signal are always stored in an overwritten state. However, if an arbitrary time is specified by the operator, a predetermined time is stored from that time. Thereafter, the storage of the image data and the voltage change data of the electric signal is stopped, so that each data before and after the time designated by the operator is surely saved. Then, by displaying the data before and after the point specified by the worker again, the cause of the change can be pursued, etc., and the relationship between the work state and the operating state of the production equipment etc. is clarified can do.

The apparatus may further comprise trigger selection means that can select and trigger at least one of the level trigger means, the image trigger means, the waveform trigger means, and the manual trigger means.
According to this configuration, the relevance between the work state and the operation state of the production facility or the like can be confirmed in the most suitable state depending on the type or environment of the production facility.

  Furthermore, a trigger condition that can combine at least two or more of the level trigger means, the image trigger means, the waveform trigger means, and the manual trigger means, and set conditions in the combined means by AND or OR. A setting unit may be provided.

The level trigger means, the image trigger means, the waveform trigger means, and the manual trigger means can be used to store image data and electrical signals stored in the first storage means or the second storage means. A third storage means for storing the voltage change data may be provided.
According to this configuration, by saving the data saved with the trigger in another storage means, the data saved with the trigger can be deleted from the first storage means and the second storage means. It becomes like this. For this reason, it becomes possible to newly perform imaging of an object and check of an electric signal using the first storage unit and the second storage unit.

  According to the data collection device of the present invention, the relationship between the actual workpiece state and the state of the production facility can be clarified, and abnormality analysis can be sufficiently performed.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an external configuration of a data collection device according to the present embodiment, FIG. 2 shows a side view of the data collection device body, and FIG. 3 shows a rear view of the data collection device body.

(Appearance configuration and general operation)
The data collection device 30 includes a data collection device main body 31 having a monitor 32 and a high-speed camera 34 that is an imaging means connected to the data collection device main body 31 by a camera cable 33.
The high-speed camera 34 in the present embodiment is not provided with a storage device for storing data, and the captured image data is poured into the data collection device main body 31 as needed. The image data is temporarily stored in a ring buffer (described later) provided in a predetermined capacity provided in the data collection device main body 31, and is stored in the ring buffer when the captured image data exceeds the capacity of the ring buffer. The old data is overwritten and stored in order.

  The data collection device main body 31 is configured such that the first housing 31a and the second housing 31b can be folded, and various switches 39 are arranged on the surface of the first housing 31a. A monitor 32 serving as a display unit is provided on the opposite surface of the second housing 31b that faces the surface of the first housing 31a. When the first casing 31a and the second casing 31b are folded, the switches 39 of the first casing 31a and the monitor 32 of the second casing 31b are provided so as not to be exposed to the outside.

  As an example of a removable storage medium, the data collection device main body 31 includes a card slot 35 into which a CF (Compact Flash) card (third storage means) can be inserted, a LAN port 36 to which a LAN cable can be connected, and a USB connector. A connectable USB port 37 is provided.

  Further, the data collection device main body 31 is connected to a camera cable connector 41 to which a camera cable to be connected to the high-speed camera 34 is connected, and an analog to which an analog signal cable for electric signal input is connected so that an electric signal is input. Signal cable connectors 38a to 38d. A plurality of analog signal cable connectors are provided, and a plurality of different electrical signals can be input simultaneously. In the present embodiment, four analog signal cable connectors 38a to 38d are provided, and electrical signals from ch1 to ch4 can be input.

  Also, the electrical signals input from the analog signal cable connectors 38a to 38d are temporarily stored in a ring buffer (described later) having a predetermined capacity, and when the input electrical signal exceeds the capacity of the ring buffer, The old data stored in the buffer is overwritten and stored in order.

As an object to be input as an electric signal, when the object to be imaged by the high-speed camera 34 is a device such as a production machine, any electric signal that can be output from this device and that can confirm an operation state can be considered.
However, as an electrical signal, a volume sensor (noise sensor), vibration sensor, or the like is connected so that an electrical signal in which the volume change is represented by a voltage change or an electrical signal in which the vibration amount is represented by a voltage change is input. Also good.

  The connector 41 provided on the back surface of the data collection device main body 31 is a camera cable connector 41 to which the camera cable 33 can be connected.

(High speed camera)
Next, the high-speed camera will be described with reference to FIG.
The high-speed camera 34 used in this embodiment includes an optical lens 40 and an image sensor 42. As the image sensor 42, a CCD, a CMOS, or the like can be employed. Analog image data captured by the image sensor 42 is output to the data collection device main body 31 by the camera cable 33. In the present embodiment, the high-speed camera 34 is not provided with a memory or the like for storing captured image data.

(Data collector main unit)
Next, the configuration of the data collection device main body 31 will be described with reference to FIG.
The data collection device main body 31 is provided with an image data control unit 70 to which analog image data captured by the high-speed camera 34 is input. The image data control unit 70 includes A / D conversion means 72 that converts the input analog image data into digital image data for each frame (sometimes simply referred to as image data) at a set frame rate, and A A ring buffer (first storage means) 74 for temporarily storing the image data subjected to the / D conversion for each frame;

  The image data control unit 70 continues to store the digitally converted image data in the ring buffer 74 while image data (analog) captured by the high-speed camera 34 is input. When the image data is stored to the full capacity of the ring buffer 74, new image data is overwritten and stored on the old image data.

  Further, when the A / D conversion unit 72 generates image data at a predetermined frame rate, the image data control unit 70 outputs a frame signal for each frame unit. The frame signal is used to synchronize the electric signal and the image data as will be described later.

  The data collection device main body 31 is provided with a data logger control unit 76 to which electric signals input from the analog signal cable connectors 38a to 38d are input. The data logger control unit 76 stores the generated instantaneous value data, and A / D conversion means 77 for generating the instantaneous value data of the voltage as the digital data from the input analog electric signal at a preset sampling rate. And a ring buffer (second storage means) 78.

The data collection device main body 31 is provided with a main control unit 50 that performs overall control of the operation of the entire data collection device.
Further, the main control unit 50 has trigger output means 82 for outputting a trigger signal to a synchronization control unit 80 described later to stop storing image data and instantaneous value data in the ring buffers 74 and 78. .

Further, the data collection device main body 31 is provided with a synchronization control unit 80 for synchronizing image data and instantaneous value data.
A trigger signal from the main control unit 50 and a frame signal from the image data control unit 70 are input to the synchronization control unit 80. When the trigger signal is input from the main control unit 50, the synchronization control unit 80 applies to the image data control unit 70 and the data logger control unit 76 in accordance with the next frame signal input from the time of the trigger signal input. A synchronous trigger signal synchronized with the frame signal is output. For this reason, the synchronization trigger signal is simultaneously input to the image data control unit 70 and the data logger control unit 76.

The image data control unit 70 to which the synchronization trigger signal is input stops storing image data in the ring buffer 74 after a preset time has elapsed since the synchronization trigger signal was input.
Similarly, the data logger control unit 76 to which the synchronization trigger signal is input stops storing instantaneous value data in the ring buffer 78 after a preset time has elapsed since the synchronization trigger signal was input.

The synchronization control unit 80 also outputs a synchronization trigger signal to the main control unit 50. The main control unit 50 assumes that the image data and instantaneous value data are actually stored on the basis of this synchronization trigger signal, and image data for a preset time before and after the synchronization trigger signal is centered from the ring buffer 74. Can be extracted.
Similarly, the main control unit 50 can extract instantaneous value data for a preset time before and after the synchronization trigger signal from the ring buffer 78.

When the reproduction switch 61 (included in the various switches 39 described above) connected to the main control unit 50 is pressed, the main control unit 50 is preset from the ring buffer 74 before and after the synchronization trigger signal. Image data for a predetermined period of time, and instantaneous value data for a predetermined period before and after the synchronization trigger signal is extracted from the ring buffer 78 and displayed on the monitor 32 on the same screen. Thus, each data is transmitted to the monitor control unit 84 (see FIG. 6).
As shown in FIG. 6, the monitor 32 simultaneously displays image data and a graph that is displayed in a continuous manner with instantaneous value data.

  The monitor control unit 84 has a function of generating an image signal to be actually displayed on the monitor 32 and outputting the image signal to the monitor 32. The monitor control unit 84 determines the contrast between the image data input from the main control unit 50 and the instantaneous value data. After adjustment, an image signal is generated and output to the monitor 32.

Hereinafter, other functions of the main control unit will be described with reference to FIG.
The main control unit 50 is provided with a frame rate selection means 81 that allows the operator to set the frame rate when the image data captured by the high-speed camera 34 is stored in the ring buffer 74 by the operator operating the switch 39. Yes.
The frame rate is provided so that the operator can select between 50 fps and 8000 fps, and the storable seconds for the ring buffer 74 increase at a small frame rate, and the storable seconds for the ring buffer 74 decrease at a large frame rate. . The frame rate selection unit 81 outputs a control signal to the image data control unit 70 so as to store the image at the set frame rate.

Further, the main control unit 50 is provided with display position changing means 86 for changing the display position of the instantaneous value data (voltage change waveform) on the monitor 32. This is because if the instantaneous value data is displayed overlapping important positions in the image data, the image data may be difficult to see.
The display position of the instantaneous value data can be moved by the operator operating the switch 39. The display position changing means 86 changes the display position of the instantaneous value data based on the switch operation, and outputs the image data and the instantaneous value data to the monitor control unit 84.

  Such a main control unit 50 includes a CPU and memories such as a ROM and a RAM. Each means mentioned above is implement | achieved when CPU reads and runs the various control programs previously memorize | stored in ROM.

(Trigger action)
FIG. 8 shows the trigger function in the data collection device main body 31.
The data collection device main body 31 includes trigger output means 82 that outputs a trigger signal serving as a trigger for storing data from the main control unit 50, but outputs the trigger signal when any condition is satisfied. This will be described below.

  The main control unit 50 is provided with level trigger means 52, image trigger means 54, waveform trigger means 56, and manual trigger means 58. In addition, a trigger detection area setting unit 55 that sets a trigger detection area to be used when the image trigger unit 54 is operated is also provided in the main control unit 50.

  The level trigger unit 52, the image trigger unit 54, the waveform trigger unit 56, the manual trigger unit 58, and the trigger detection area setting unit 55 are respectively a level trigger program, an image trigger program, and a waveform trigger stored in the memory area of the main control unit 50. The program and the manual trigger program are realized by being read and operated by the processor constituting the main control unit 50.

An operation switch 39 for setting each trigger means is connected to the main control unit 50, and an operator can select and determine one of the trigger means by operating the operation switch 39. .
The main controller 50 is provided with a recording switch 62. When the recording switch 62 is turned on, the manual trigger means 58 operates. That is, the trigger signal is output after a predetermined time has elapsed since the recording switch 62 was turned on.

(Level trigger means)
Then, each trigger means is demonstrated based on FIGS.
When the level trigger means 52 is set by operating the operation switch 39, the level trigger means 52 controls the data logger control unit 76 to determine whether the value of the instantaneous value data stored in the ring buffer 78 exceeds a preset threshold value. Always detect. Note that the threshold value is stored in advance in a predetermined area of the memory area of the main control unit 50 or in the memory area of the data logger control unit 76, and the value can be changed by operating the operation switch 39.
The level trigger unit 52 outputs a trigger signal from the trigger output unit 82 to the synchronization control unit 80 when a signal indicating that the value of the instantaneous value data exceeds a preset threshold value is input from the data logger control unit 76. Let

  The level trigger means 52 may be provided in the data logger control unit 76. In such a case, a signal indicating that a preset threshold value has been exceeded is output from the data logger control unit 76 to the trigger output means 82 of the main control unit 50.

In the operation of the level trigger means 52 described above, it was determined whether or not the voltage value exceeded the threshold value by looking at the rising edge of the electric signal.
However, the level trigger means 52 may determine whether or not the voltage value has fallen below the threshold value when the electric signal falls.
In this way, whether the level trigger means 52 sees the rise or the fall depends on whether the operator operates the operation switch 39 to set the level trigger means 52. You can choose to see or set.

(Image trigger means)
When set by operating the operation switch 39, the image trigger means 54 controls the image data control unit 70, and the trigger detection set by the trigger detection area setting means 55 among the image data stored in the ring buffer 74 is detected. Whether the image data in the region has changed is always detected. Note that the change in the image data here means that when all of the pixels in the image data existing in the trigger detection area have changed by a predetermined amount or more, either luminance or color difference, The image data control unit 70 determines that there has been a change.

  Specifically, the image data stored in the ring buffer 74 is configured in an image format defined by three types of luminance Y component, color difference U component, and color difference V component. What is the difference between the average value of the luminance Y component, the color difference U component, and the color difference V component in all the pixels in the trigger detection area and the average value of the comparison image (described later) with respect to the gradation of each component It is determined whether the image has changed due to the change.

  The detected change amount is set in advance by the operator so that the detected change amount can be set to any number of 5%, 10%, 20%, 30%, and 40% by the operation switch 39, for example. It can be set. The detected change amount set by the operator operating the operation switch 39 is stored in the memory area of the main control unit 50 or in the memory area of the image data control unit 70.

  When the high speed camera 34 is a monochrome camera, there is no color difference component. Therefore, in this case, the image trigger means 54 determines whether or not the image has changed depending on what percentage of the difference between the average value of the luminance component in all the pixels in the trigger detection region and the average value of the comparison image has changed. Is determined by the image data control unit 70.

  The comparison image in the image trigger means 54 may be image data that is a predetermined frame (or a predetermined time) before the latest image data, and is reference image data set in advance. There may be. In the present embodiment, comparison with image data that is a predetermined frame (or predetermined time) before the latest image data is referred to as difference detection, and comparison with preset reference image data is comparison detection. (Refer to FIG. 10).

  The detection of the image change by the difference detection or the image change detection by the comparison detection by the image data control unit 70 can be selected by the operator. The selection can be performed by operating the operation switch 39. When detecting that the operation switch 39 has selected the difference detection, the image trigger means 54 causes the image data control unit 70 to compare the latest image data with the image data of a predetermined time ago (for example, 100 ms) to detect the trigger. The difference between the average value of each of the luminance Y component, the color difference U component, and the color difference V component in all the pixels in the region and the average value of the comparison image (described later) has changed by what percentage with respect to the gradation of each component. Whether or not the image has changed is determined.

  On the other hand, when the image trigger means 54 detects that the operation switch 39 has selected comparison detection, the image trigger means 54 uses the reference image data preset in the image data control unit 70 as a memory area of the main control unit 50 or the image data control unit 70. Are extracted from the memory area and compared with the latest image data. As a result of the comparison, the difference between the average value of the luminance Y component, the color difference U component, and the color difference V component in all the pixels in the trigger detection area and the average value of the comparison image (described later) becomes the gradation of each component. On the other hand, it is determined whether the image has changed depending on what percentage has changed.

In the case of comparison detection, reference image data must be set in advance and stored in the memory area of the main control unit 50.
The reference image data is set by setting the image displayed on the monitor 32 as reference image data when the image trigger means 54 depresses the operation switch 39 when the operator selects the difference detection. It is determined by storing in the memory area or the memory area of the image data control unit 70.

In addition, the main control unit 50 is provided with a trigger detection area setting unit 55 that sets a target image position on the monitor 32 as a detection area. The trigger detection area setting means 55 can change the movement and range (size) of the position of the trigger detection area on the monitor 32 when the operator operates the operation switch 39. When the position and range of the trigger detection area are set, they are stored in the memory area of the main controller 50 or the memory area of the image data controller 70.
The image trigger unit 54 outputs a trigger signal to the synchronization control unit 80 when a signal indicating that the image in the trigger detection area has been changed is input to the image data control unit 70.

  The image trigger means 54 may be provided in the image data control unit 70. In such a case, a signal indicating that a preset threshold value has been exceeded is output from the image data control unit 70 to the trigger output means 82 of the main control unit 50.

When the waveform trigger means 56 is set by operating the operation switch 39, the waveform trigger means 56 controls the data logger control unit 76 to always determine whether or not the waveform formed by the value of the instantaneous value data stored in the ring buffer 78 has changed. Let it be detected.
Examples of the change in waveform include mutual changes in waveforms such as a sine wave, a triangular wave, a rectangular wave, a sawtooth wave, and a straight line.

The calculation of the change in waveform is executed by the waveform detection means 88 provided in advance in the data logger control unit 76.
For example, the waveform detecting means 88 extracts feature points of the waveform formed by the instantaneous value data, performs a flow line trace of that portion, and extracts a feature amount from the normal flow line to create a reference space. Then, the waveform detection means calculates the Mahalanobis distance between the feature quantity of the flow line extracted after the start of the operation of the waveform trigger means 56 and the feature quantity at the normal time, and the Mahalanobis distance exceeds a preset threshold value In addition, it can be determined that the waveform has changed.

  As another embodiment of the operation of the waveform detecting means 88, the waveform can be detected using the waveform of the input analog electric signal. In such a case, the waveform detection means creates a reference space by sampling a normal analog electrical signal at a predetermined sampling rate and extracting a feature amount. Then, the waveform detection means calculates the Mahalanobis distance between the feature quantity of the analog electrical signal extracted after the operation of the waveform trigger means 56 and the feature quantity at normal time, and the Mahalanobis distance exceeds a preset threshold value. If it is determined that the waveform has changed, it can be determined.

  When it is detected that the recording switch 62 is pressed, the manual trigger means 58 outputs a trigger signal after a predetermined time has elapsed since the pressing.

  Note that each of the trigger means described above may be provided so as to be set by combining any one of them. At this time, the trigger signal may be transmitted by each trigger means as long as any one of the conditions of each trigger means is satisfied, or the condition of any one of the plurality of trigger means is You may make it transmit a trigger signal, when satisfy | filling.

  In addition, when a plurality of electric signals are input, the level trigger means 52 transmits a trigger signal when the voltage values of the plurality of electric signals both exceed the threshold values set separately. It may be provided.

(Operation after triggering)
A trigger signal is output from the main control unit 50 to the synchronization control unit 80 by each trigger unit described above, and a synchronization trigger signal synchronized with each other is output from the synchronization control unit 80 to the image data control unit 70 and the data logger control unit 76. Then, the image data control unit 70 and the data logger control unit 76 stop storing data in the ring buffers 74 and 78 after a predetermined time has elapsed since the reception of the synchronization trigger signal.
The predetermined time may be provided so that the operator can set it.

After the trigger is applied and the data storage is stopped, the operator can read and reproduce the image data and instantaneous value data stored in the ring buffers 74 and 78.
At the time of reproduction, the image reproduction unit 92 provided in the main control unit 50 controls the image data control unit 70 and the data logger control unit 76 to set the forward / reverse direction, change the reproduction speed, frame advance A playback method used in normal video playback can be executed.

  A jog dial 90 that can be operated by an operator is connected to the image reproducing means 92. The jog dial 90 can output a pulse signal corresponding to the rotation speed to the image reproduction means 92 as the operator rotates it. In the image reproduction means 92, the image data and instantaneous value data stored in each of the ring buffers 74 and 78 are read at a speed corresponding to the pulse period of the pulse signal. For this reason, the operator can visually recognize the image data and the instantaneous value data at an arbitrary reproduction speed.

  Further, since the jog dial 90 can reverse the pulse polarity according to the rotation direction, the image reproduction means stores image data and instantaneous value data stored in the ring buffers 74 and 78 according to the polarity of the pulse signal. Can be changed to the forward direction or the reverse direction. For example, the image reproduction means displays the data in the forward direction in time by turning the jog dial clockwise by the worker, and displays the data in the reverse direction in time by turning the jog dial counterclockwise by the worker. Can be made.

(Storage to storage media)
The main control unit 50 is provided with card storage means 94 for reading out image data and instantaneous value data stored in each of the ring buffers 74 and 78 and storing them in the CF card 95 after triggering and data storage stop. ing.
The card storage means 94 operates when the operator operates the operation switch 39, and after the operator selects an image format (RAW or MPEG), the image data stored in the ring buffers 74 and 78 and The instantaneous value data is read out and stored in the CF card 95 in the selected image format.

  Note that the reproduction of the image data and the instantaneous value data can be performed by reading from the image data and the instantaneous value data stored in the CF card 95.

  While the present invention has been described in detail with reference to a preferred embodiment, the present invention is not limited to this embodiment, and it goes without saying that many modifications can be made without departing from the spirit of the invention. .

It is a perspective view which shows the external appearance structure of the data collection device of this invention. It is a side view of a data collection device. It is a rear view of a data collection device. It is explanatory drawing explaining the internal structure of a high-speed camera. It is explanatory drawing which shows schematic structure of a data collection device main body. It is an example of the image displayed on a monitor. It is explanatory drawing explaining the other function of a main control part. It is explanatory drawing explaining a trigger function. It is explanatory drawing which shows the place which applied the level trigger. It is explanatory drawing shown about the specific example of an image trigger. It is explanatory drawing explaining the reproduction | regeneration of an image and the memory | storage to a storage medium.

Explanation of symbols

30 Data collection device 31 Data collection device main body 32 Monitor 33 Camera cable 34 High speed camera 35 Card slot 36 LAN port 37 USB port 38a to 38d Analog signal cable connector 39 Switch 40 Optical lens 41 Camera cable connector 42 Image sensor 50 Main control unit 52 Level trigger means 54 Image trigger means 55 Trigger detection area setting means 56 Waveform trigger means 58 Manual trigger means 61 Playback switch 62 Recording switch 70 Image data control section 72 A / D conversion means 74, 78 Ring buffer 76 Data logger control section 77 A / D conversion unit 80 Synchronization control unit 81 Frame rate selection unit 82 Trigger output unit 84 Monitor control unit 86 Display position change unit 88 Waveform detection unit 90 Jog dial 92 Image Reproduction means 94 Card storage means 95 Card

Claims (11)

High-speed imaging means capable of imaging an object at an arbitrary frame rate;
An electric signal input unit for inputting an electric signal;
Synchronization means for synchronizing the image data captured by the high-speed imaging means and the voltage change data of the electrical signal;
The image data picked up by the high-speed image pickup means is stored for a plurality of frames, and when the number of newly picked up image data exceeds the number of frames that can be stored, the old image data is overwritten with the new image data. First storage means for storing image data,
When the voltage change data of the electric signal input from the electric signal input unit is stored for a predetermined time, and the voltage change data of the newly input electric signal exceeds the storable predetermined time, Second storage means for storing voltage change data by overwriting old voltage change data with new voltage change data;
A data collection apparatus comprising: display means for simultaneously displaying image data picked up by the high-speed image pickup means and voltage change data of the electric signal.   When the voltage value of the voltage change data exceeds or falls below a preset threshold value, the image data of the image data picked up by the high-speed imaging means after a predetermined time has elapsed from when the voltage value exceeds or falls below the threshold value. 2. The data collection device according to claim 1, further comprising level trigger means for stopping storage in the first storage means and storage of the voltage change data of the electrical signal in the second storage means.   When there is a change in the image data picked up by the high-speed image pickup means, the image data picked up by the high-speed image pickup means is stored in the first storage means after a predetermined time has elapsed since the change. 3. The data collecting apparatus according to claim 1, further comprising an image trigger unit that stops storing the voltage change data of the electric signal in the second storage unit.   4. The data collection apparatus according to claim 3, further comprising trigger detection area setting means for setting a trigger detection area for specifying an image position at which the image trigger means changes. The trigger detection area setting means includes
5. The data collection apparatus according to claim 4, wherein the trigger detection area in the display means is provided so that the size and position thereof can be changed.   The image trigger means is configured to transfer the image data to the first storage means when at least one of luminance and color difference of the image data changes by a predetermined threshold or more in the set trigger detection area. 6. The data collection device according to claim 4, wherein the storage of the data and the storage of the voltage change data of the electrical signal in the second storage means are stopped.   When there is a change in the waveform shape of the voltage change data of the electric signal input from the electric signal input unit, the image data picked up by the high-speed imaging means after a predetermined time has elapsed since the change. 7. A waveform trigger means for stopping storage in the first storage means and storage of the voltage change data of the electrical signal in the second storage means is provided. The data collection device according to any one of claims.   Stops storing the image data captured by the high-speed imaging unit in the first storage unit and the voltage change data of the electrical signal in the second storage unit after a predetermined time has elapsed from an arbitrary time. The data collection method according to claim 1, further comprising manual triggering means.   3. A trigger selecting unit capable of selecting and triggering at least one of the level trigger unit, the image trigger unit, the waveform trigger unit, and the manual trigger unit. 9. The data collection device according to any one of items 8.   Trigger condition setting means that can combine at least two of the level trigger means, the image trigger means, the waveform trigger means, and the manual trigger means, and set conditions in the combined means by AND or OR. The data collection device according to any one of claims 2 to 9, further comprising:   Voltage change of image data and electric signal stored in the first storage means or the second storage means by any one of the level trigger means, the image trigger means, the waveform trigger means, and the manual trigger means The data collection device according to any one of claims 2 to 10, further comprising third storage means for storing data.