JP2015043174A - Electronic part counting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably and easily count a plurality of electronic parts attached on a tape body wound around a reel.SOLUTION: Using a perspective imaging means which includes a radiation source 1 for generating radiation and emitting toward an analyte and a radiation detector 4 for detecting the radiation transmitting a tape body 101: the tape body 101 which is wound around a reel 102 and in which a plurality of electronic parts 103 are arranged and attached on the longitudinal direction is picturized; two-dimensional distribution of radiation dose detected by the radiation detector 4 is imaged; figures of the electronic parts 103 are extracted from the image; and the number of the electronic parts 103 is counted.

Description

  The present invention relates to a counting device for a plurality of electronic components that are arranged and stuck in a longitudinal direction of a tape body wound around a reel.

  As described in Patent Document 1, some electronic components such as resistors, capacitors, and semiconductor devices are attached and fixed to a tape body (carrier tape: TAB tape) made of an insulating film. In this tape body, a plurality of electronic components are aligned and pasted in the longitudinal direction. This tape body is stored and transported while being wound around a reel (chip cassette). The diameter of the reel around which the tape body is wound is, for example, about 180 mm to 380 mm. Such an electronic component is detached from the tape body and mounted on an electronic circuit board to constitute an electronic circuit.

  Such electronic components need to be counted at the time of inventory, etc. in a state where they are attached to a tape body wound around a reel. Conventionally, a counting device (chip counter) is used to count such electronic components. As shown in FIG. 7, the counting device is configured to pull out the tape body 101 from one reel 102 around which the tape body 101 is wound and to wind the tape body 101 onto the other reel 104. . The counting device is configured to detect and count an electronic component on the tape body 101 moving from one reel 102 to the other reel 104 by an optical sensor 105 or the like at a predetermined position.

JP 2000-025709 A

  By the way, in the counting device as described above, since the electronic parts are detected and factored one by one while the tape body 101 is pulled out from the reel 102 and moved, man-hours for winding and rewinding are required. For example, even if counting is completed in one minute, it is necessary to rewind in the next one minute. Including the time for extending and setting the tape body 101, it takes about 3 minutes to 4 hours.

  In addition, in this counting device, the tape body 101 and the electronic component may be damaged because the tape body 101 is wound and rewound at a high speed.

  Accordingly, the present invention has been proposed in view of the above-described circumstances, and a plurality of electronic components attached to a tape body wound around a reel can be quickly transferred without damaging the tape body and the electronic components. Another object of the present invention is to provide a counting device for electronic components that can be easily counted.

  An electronic component counting device according to the present invention has any one of the following configurations in order to solve the above-described problems.

[Configuration 1]
A radiation source that generates radiation and emits it toward a subject including a plurality of electronic components; a fluoroscopic imaging means having a radiation detector that detects radiation transmitted through the subject; and a radiation amount detected by the radiation detector. Signal processing means for imaging a dimensional distribution and extracting an image of an electronic component in the image, and the subject is a tape body in which a plurality of electronic components are arranged in a longitudinal direction and attached and wound on a reel, The number of electronic components is counted by the counting means based on the image of the electronic components extracted in the captured image.

[Configuration 2]
In the electronic component counting apparatus having configuration 1, the radiation detector is a line sensor having a sensor line having a length corresponding to the radius of the reel, and maintains the state in which the direction of the sensor line is the radial direction of the reel. The entire tape body is imaged by rotating the reel together with the tape body or by rotating the fluoroscopic imaging means.

[Configuration 3]
In the electronic component counting apparatus having the configuration 1 or the configuration 2, the counting unit counts the number of electronic components by an image analysis unit based on a factorization method.

  In the electronic component counting apparatus according to the present invention having the configuration 1, the fluoroscopic imaging unit images a tape body in which a plurality of electronic components are arranged and attached in the longitudinal direction and wound around a reel, and the captured image is captured. Since the number of electronic components is counted based on the image of the electronic components extracted in step 1, it is not necessary to take up and rewind the tape body, and quickly and easily without damaging the tape body and the electronic components. The number of electronic components can be counted.

  In the electronic component counting apparatus according to the present invention having the configuration 2, the radiation detector is a line sensor having a sensor line having a length corresponding to the radius of the reel, and the direction of the sensor line is defined as the reel radial direction. In this state, the entire tape body is imaged by rotating the reel together with the tape body or by rotating and operating the fluoroscopic imaging means, thereby simplifying the device configuration and reducing the manufacturing cost. It can be inexpensive.

  In the electronic component counting device according to the present invention having the configuration 3, the number of electronic components is counted by the image analysis means based on the factorization method, so that the electronic components distributed three-dimensionally can be surely and easily obtained. Can be counted.

  That is, the present invention provides an electronic component that can quickly and easily count a plurality of electronic components attached to a tape body wound around a reel without damaging the tape body and the electronic component. A counting device can be provided.

It is a side view which shows the structure of the measuring device of the electronic component which concerns on this invention. It is a top view which shows the tape body wound by the reel used as the test object in the measuring device of the electronic component which concerns on this invention. It is a perspective view which shows the structure of the measuring device of the electronic component which concerns on this invention. It is a perspective view which shows the structure using the long line sensor in the measuring device of the electronic component which concerns on this invention. It is a perspective view which shows the structure using the short line sensor in the measuring device of the electronic component which concerns on this invention. It is a figure which shows the actual image imaged in the measuring device of the electronic component which concerns on this invention. It is a top view which shows the structure of the measuring device of the conventional electronic component.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Configuration of electronic device measuring device]
FIG. 1 is a side view showing a configuration of an electronic component measuring apparatus according to the present invention.

  As shown in FIG. 1, this electronic component measuring apparatus detects X-ray tube 1 as a radiation source that emits radiation such as X-rays and emits it toward the subject, and radiation detection that detects the radiation that has passed through the subject. A fluoroscopic imaging means having an X-ray detector 4 serving as a detector is provided.

  FIG. 2 is a plan view showing a tape body wound around a reel serving as a subject in the electronic component measuring apparatus according to the present invention.

  As shown in FIGS. 1 and 2, the subject is a tape body 101 in which a plurality of electronic components 103 are affixed in a longitudinal direction and are wound around a reel 102.

  The X-ray tube 1 emits a radial X-ray beam X toward the tape body 101. The X-ray tube 1 is controlled by an X-ray control device 2. The X-ray control device 2 is controlled by the control device 10.

  FIG. 3 is a perspective view showing the configuration of the electronic device measuring apparatus according to the present invention.

  As shown in FIGS. 1 and 2, the tape body 101 is installed on the moving operation mechanism 3. The moving operation mechanism 3 moves the tape body 101 in a direction crossing the X-ray beam X within the radiation range of the X-ray beam X.

  Note that the control device 10 can also move the X-ray tube 1 using the movement operation mechanism 11.

  The tape body 101 is moved and operated in the direction orthogonal to the paper surface in FIG. 1 and the right and left direction along the paper surface by the movement operation mechanism 3. The X-ray beam X emitted from the X-ray tube 1 and transmitted through the tape body 101 is detected by the X-ray detector 4.

  As the X-ray detector 4, a commonly used imaging tube type can be used. This type of X-ray detector 4 detects on the principle that the charge charged in proportion to the X-ray dose in the sensing unit is scanned and read by an electron beam.

  Since the X-ray beam X is a beam that is emitted from the X-ray tube 1 and diffuses radially, it is diffused even after passing through the tape body 101 and detected by the X-ray detector 4. Therefore, the X-ray detector 4 detects an enlarged transmission image of the tape body 101. The enlargement ratio at this time is determined by the ratio between the distance from the X-ray tube 1 to the tape body 101 and the distance from the X-ray tube 1 to the X-ray detector 4 and is, for example, about 8 to 10 times.

  The X-ray detector 4 may be a two-dimensional sensor (surface sensor) or a line sensor. When the X-ray detector 4 is a two-dimensional sensor, the two-dimensional distribution of the radiation dose (X-ray dose) transmitted through the entire tape body 101 is imaged without moving the tape body 101 and the X-ray tube 1. can do. As the X-ray detector 4 in this case, there are an X-ray flat panel detector, an X-ray image intensifier, an MCP (multichannel plate) and the like.

  FIG. 4 is a perspective view showing a configuration using a long line sensor in the electronic component measuring apparatus according to the present invention.

  When the X-ray detector 4 is a line sensor, as shown in FIG. 4, the tape body 101 is moved in one direction indicated by an arrow A in FIG. 4, or the X-ray tube 1 is moved. By doing so, the two-dimensional distribution of the radiation dose (X dose) transmitted through the entire tape body 101 can be imaged in a time division manner. The direction of moving the tape body 101 or the X-ray tube 1 is a direction orthogonal to the sensor line 4 a of the X-ray detector 4. Note that both the tape body 101 and the X-ray tube 1 may be moved at the same time.

  FIG. 5 is a perspective view showing a configuration using a short line sensor in the electronic component measuring apparatus according to the present invention.

  When the X-ray detector 4 is a line sensor, as shown in FIG. 5, the length of the sensor line 4a of the X-ray detector 4 is equivalent to the radius of the reel 102 (in consideration of the enlargement ratio). Length). In this case, by rotating the reel 102 together with the tape body 101 in one direction indicated by the arrow B in FIG. 5, or by rotating and moving the X-ray tube 1 and the X-ray detector 4, the tape body. A two-dimensional distribution of the radiation dose (X-ray dose) transmitted through the whole 101 can be imaged in a time division manner. In this case, the state in which the direction of the sensor line 4a of the X-ray detector 4 is in the radial direction of the reel 102 is maintained, the reel 102 is rotated, or the X-ray tube 1 and the X-ray detector 4 are moved. Rotate and move.

  As shown in FIG. 1, the X-ray detector 4 is connected to a detector controller 5 and controlled by the detector controller 5, and the detected radiation intensity information is amplified. The radiation intensity information amplified by the detector controller 5 is supplied to an imaging circuit 6 serving as a signal processing means. The imaging circuit 6 converts the detection output (two-dimensional distribution of radiation dose) of the X-ray detector 4 into an image signal and sends the image signal to the display device 7 and the counting circuit 12 serving as counting means. The imaging circuit 6 extracts an image of the electronic component 103 from the captured image.

  FIG. 6 is a diagram showing an actual image captured by the electronic component measuring apparatus according to the present invention.

  In this way, as shown in FIG. 6, images of the tape body 101 and the electronic component 103 wound around the reel 102 are obtained.

  The display device 7 displays an image corresponding to the signal sent from the imaging circuit 6. The counting circuit 12 counts the number of electronic components 103 based on the image of the electronic component 103 extracted from the captured image.

  In this electronic component counting apparatus, counting the number of electronic components 103 of the entire tape body 101 wound around one reel 102 is completed in about one minute, for example.

[Measurement method]
The counting of the number of electronic components 103 by the counting circuit 12 can be determined from the projected area (number of pixels) of one electronic component 103 and the projected areas (number of pixels) of all the captured electronic components 103. That is, it is assumed that the projected area (number of pixels) in the imaged image of one electronic component 103 is known. Then, the entire tape body 101 is imaged, and the projection area (number of pixels) of all the electronic components 103 is obtained. Then, by dividing the projected area (number of pixels) of all the electronic components 103 by the projected area (number of pixels) of one electronic component 103, the quantity (number) of the electronic components 103 can be obtained.

  The counting of the number of electronic components 103 by the counting circuit 12 can be performed by, for example, a factorization method. The factorization method includes a statistical method, and it is assumed that the observation data is a composite amount and tries to obtain individual components and feature amounts.

  The present invention is applied to a counting device for a plurality of electronic components that are arranged and stuck in the longitudinal direction of a tape body wound around a reel.

1 X-ray source (radiation source)
3 Moving operation mechanism 4 X-ray detector (radiation detector)
6 Imaging circuit (signal processing means)
10 control device 12 counting device (counting means)
101 Tape body 102 Reel 103 Electronic component X X-ray beam (radiation)

Claims (3)

A fluoroscopic imaging means having a radiation source that emits radiation and emits the radiation toward a subject including a plurality of electronic components;
A signal processing means for imaging a two-dimensional distribution of the radiation dose detected by the radiation detector, and extracting an image of the electronic component in the image;
The subject is a tape body in which a plurality of electronic components are arranged and pasted in the longitudinal direction and wound around a reel.
An electronic component counting apparatus, wherein the number of the electronic components is counted by a counting means based on an image of the electronic components extracted from the captured image. The radiation detector is a line sensor having a sensor line having a length corresponding to the radius of the reel, and maintains the state in which the direction of the sensor line is the radial direction of the reel, and the reel is attached to the tape. 2. The electronic component counting apparatus according to claim 1, wherein the entire tape body is imaged by rotating the body together with the body or by rotating and operating the fluoroscopic imaging unit. 3. The electronic component counting apparatus according to claim 1, wherein the counting unit counts the number of the electronic components by an image analysis unit based on a factorization method.

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