JP6637202B2 - Detection device, detection method, and program - Google Patents

Description

  The present invention relates to object detection, and more particularly, to a detection device, a detection method, and a program for detecting a foreign substance in a card insertion slot.

  Automatic transaction machines such as ATMs (Automated Teller Machines) or CDs (Cash Dispensers) are widely used. The automatic transaction machine authenticates a user using information written on a card (for example, a magnetic card that magnetically stores information).

  In recent years, crimes that illegally steal information written on cards, so-called skimming crimes, have become a social problem.

  An unauthorized person who intends to perform skimming attaches a device (skimming device or skimming unit) for reading information recorded on a card to a card insertion slot such as an ATM or a CD. Therefore, a detection device for dealing with skimming monitors or detects the installation of an unauthorized device (unit) at the card insertion slot (for example, see Patent Documents 1 and 2). Such a detecting device uses, for example, an infrared sensor as a detector for detecting skimming equipment.

  It is desirable that the detection device can detect an unauthorized device (skimming unit) as much as possible. Therefore, it is desirable that the detection device has a high detection accuracy and a wide detection range.

  However, in an environment where the detection device is installed, there are factors that affect the detection performance of the detection device. Such factors include factors related to light (for example, disturbance light such as sunlight and lighting), factors related to the light receiving portion (for example, dust or dirt), and factors related to the vicinity of the card insertion slot. (For example, an insect, a user, or a user's belongings).

  If the detection sensitivity of the detector of the detection device is improved to improve the detection accuracy or the detection range, the detection device is likely to be affected by the above factors.

  Therefore, various methods are used, as in Patent Literature 1 and Patent Literature 2.

  The technology described in Patent Document 1 improves detection accuracy by providing foreign matter sensors above and below a card insertion slot.

  Further, the technique described in Patent Document 2 irradiates a light beam in a lattice pattern and captures reflected light with an infrared monitoring camera.

JP 2010-250711 A JP 2008-027259 A

  However, the foreign matter sensor described in Patent Document 1 can detect only a limited position near the card insertion slot. That is, the technique described in Patent Document 1 has a problem that the range in which foreign matter can be detected is narrow.

  In addition, the technique described in Patent Document 2 needs to irradiate a predetermined pattern with a light beam having a lattice pattern. In order to irradiate a light beam on a lattice-like pattern, a light source (for example, a laser light source) that emits a light beam that is narrowed down to a predetermined range and an optical device for narrowing down the light are required. In addition, in order to irradiate a light beam on a lattice-like pattern, a high-precision optical device such as a polygon mirror is required. That is, the technology described in Patent Document 2 has a problem that high-performance and high-precision optical equipment (hereinafter, referred to as advanced optical equipment) is required.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a detection device, a detection method, and a program for improving the detection range and detection accuracy of a device provided in a card insertion slot without requiring an advanced optical device. To provide.

  A detection device according to an embodiment of the present invention includes a first light emitting unit that emits first detection light, and a first light emitting unit that is provided on a side opposite to the first light emitting unit with respect to a card insertion slot for inserting a card. A second light-emitting unit that emits the second detection light, and a second light-emitting unit that is installed at a predetermined distance from the first light-emitting unit and the second light-emitting unit to detect the first detection light and the second detection light Detecting means, and the first light emitting means and the second light emitting means emit light using respective predetermined patterns, and the first detecting light pattern and the second detecting light pattern are obtained using the detecting means. Then, it is determined whether or not the pattern of the first detection light and the pattern of the second detection light match the pattern for emitting light, and the pattern of the first detection light or the pattern of the second detection light is determined. At least one of the patterns does not match the pattern for emitting light. In this case, the color information at a predetermined position when the first light emitting unit and the second light emitting unit do not emit light is acquired, and whether the acquired color information matches the color information stored in advance is determined. Determining means for determining whether a foreign object is attached when the color information matches.

  A detection method according to an embodiment of the present invention includes a first light emitting unit that emits first detection light, and a first light emitting unit that is provided on a side opposite to the first light emitting unit with respect to a card insertion slot for inserting a card. A second light-emitting unit that emits the second detection light, and a second light-emitting unit that is installed at a predetermined distance from the first light-emitting unit and the second light-emitting unit to detect the first detection light and the second detection light The first light emitting means and the second light emitting means emit light using respective predetermined patterns, and the first detecting light pattern and the second detection light are detected using the detecting means. A light pattern is obtained, and it is determined whether the first detection light pattern and the second detection light pattern match the pattern for emitting light, and the first detection light pattern or the second detection light pattern is determined. At least one of the detection light patterns If the pattern does not match, the color information at a predetermined position when the first light emitting means and the second light emitting means do not emit light is acquired, and the acquired color information and the color information stored in advance are acquired. Are determined to match, and if the color information matches, it is determined that a foreign object is attached.

  A program according to an embodiment of the present invention includes a first light emitting unit that emits first detection light, and a second light emitting unit that is provided on a side opposite to the first light emitting unit with respect to a card insertion slot for inserting a card. A second light-emitting unit that emits the first detection light and a first light-emitting unit and a second light-emitting unit that are located at a predetermined distance from the second light-emitting unit to detect the first detection light and the second detection light Processing for causing a computer, which is a detection device including a detection unit, to emit light using the first light-emitting unit and the second light-emitting unit using respective predetermined patterns; A process of acquiring a pattern of the second detection light, a process of determining whether the pattern of the first detection light and the pattern of the second detection light match the pattern for emitting light, Pattern of the second detection light or the pattern of the second detection light A process of acquiring color information at a predetermined position when the first light emitting means and the second light emitting means do not emit light when at least one of the patterns does not match the pattern for emitting light; A process for determining whether or not the color information matches the color information stored in advance, and a process for determining that a foreign substance is attached when the color information matches, are executed.

  ADVANTAGE OF THE INVENTION According to this invention, the effect of improving the detection range and the detection accuracy of the apparatus provided in the card insertion slot can be achieved without requiring advanced optical equipment.

FIG. 1 is a diagram illustrating an example of the configuration of the detection device according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating an example of a configuration of the detection device according to the first embodiment. FIG. 3 is a block diagram illustrating an example of a configuration of the detection device according to the first embodiment. FIG. 4 is a block diagram illustrating an example of a configuration of the detection device including a detailed configuration of the determination unit according to the first embodiment. FIG. 5 is a flowchart illustrating an example of the operation of the detection device according to the first embodiment. FIG. 6 is a diagram illustrating an example of another configuration of the light emitting unit according to the first embodiment. FIG. 7 is a block diagram illustrating an example of another configuration of the detection device according to the first embodiment. FIG. 8 is a block diagram illustrating an example of another configuration of the detection device according to the first embodiment.

  Next, an embodiment of the present invention will be described with reference to the drawings.

  Each drawing is for describing an embodiment of the present invention. However, the present invention is not limited to the description of each drawing. In addition, the same reference numerals are given to the same components in each drawing, and the repeated description thereof may be omitted.

  In addition, in the drawings used in the following description, the configuration of a portion that is not relevant to the description of the present invention is omitted and may not be illustrated.

  Note that the embodiment of the present invention detects a foreign substance installed near the card insertion slot for inserting a card. Therefore, in the present embodiment, there is no particular limitation on the card inserted into the card insertion slot. For example, the card of the present embodiment may be a magnetic card including a magnetic stripe on the front surface, the back surface, both surfaces, or inside. Alternatively, the card of the present embodiment may be an IC (Integrated Circuit) card for electrically reading and writing information. Alternatively, the card of the present embodiment may be a card having a magnetic recording surface on one entire surface (for example, a magnetic ticket). That is, in the following description, a card is an object having a substantially planar shape, and an object that stores information on its surface or inside.

<First embodiment>
First, the configuration of the detection device 100 according to the first embodiment of the present invention will be described.

(Description of configuration)
FIG. 1 is a diagram illustrating an example of a configuration of the detection device 100 according to the first embodiment.

  As shown in FIG. 1, the detection device 100 includes a card insertion slot 30, a light emitting unit 40, a light emitting unit 50, and a detecting unit 60. As will be described later, the detection device 100 includes a determination unit 20 not shown in FIG. When the light emitting unit 40 and the light emitting unit 50 are distinguished from each other, they are referred to as a first light emitting unit and a second light emitting unit, respectively. Further, as described later, the detection unit 60 detects light emitted by the light emitting unit 40 and the light emitting unit 50. Therefore, the light emitted by the light emitting unit 40 and the light emitted by the light emitting unit 50 are referred to as first detection light and second detection light, respectively.

  The card insertion slot 30 is an opening for inserting the card 10.

  The light emitting unit 40 and the light emitting unit 50 emit light in a predetermined pattern under the control of the determination unit 20, as described later. However, the light emitting unit 40 and the light emitting unit 50 only need to emit light that can be detected by the detection unit 60. Therefore, the light emitting unit 40 and the light emitting unit 50 do not require a special optical device. For example, the light emitting unit 40 and the light emitting unit 50 may be light emitting diodes (LEDs).

  It is desirable that the light emitting unit 40 and the light emitting unit 50 emit light (for example, infrared light) that cannot be recognized by a person in order to avoid erroneous recognition by the user. This is to prevent an unauthorized person who intends to install skimming equipment from noticing that the detection device 100 is installed. However, the light emitting unit 40 and the light emitting unit 50 may emit visible light.

  The detection unit 60 detects light emitted by the light emitting units 40 and 50. More specifically, the detection unit 60 only needs to detect light to such an extent that the determination unit 20 can recognize the light emission patterns of the light emitting units 40 and 50, as described later. For example, when the determination unit 20 can detect the pattern based on the light emitting state and the light-off state in the light emitting unit 40 and the light emitting unit 50, if the detecting unit 60 can detect the light emitting state and the light off state of the light emitting unit 40 and the light emitting unit 50, Good. Therefore, the detection unit 60 does not require a high-precision optical system. The detection unit 60 is, for example, an image sensor or a CCD (Charge Coupled Device) camera module.

  The light emitting unit 40, the light emitting unit 50, and the detecting unit 60 are arranged at positions described below.

  The light emitting unit 40 and the light emitting unit 50 are arranged at positions sandwiching the card insertion slot 30. That is, the light emitting unit 40 and the light emitting unit 50 are arranged at positions facing the card insertion slot 30. This is to make it possible to detect an unauthorized device (skimming device) on either side of the card insertion slot 30.

  The detection unit 60 is arranged on the same side of either the light emitting unit 40 or the light emitting unit 50 with respect to the card insertion slot 30 and at a predetermined distance from the light emitting unit 40 and the light emitting unit 50. Here, the predetermined distance is a distance including a range in which a foreign substance is assumed to be installed. As described above, since the detection unit 60 is separated from the light emitting unit 40 and the light emitting unit 50 by a predetermined distance, the detection device 100 can realize a wide detection range.

  Further, the detecting unit 60 is arranged at the following position with respect to the light emitting unit 40 or the light emitting unit 50 arranged between the card insertion openings 30.

  As an example, it is assumed that the detection unit 60 is arranged on the same side as the light emitting unit 40. In this case, the detection unit 60 is arranged at the following position. That is, the detection unit 60 is arranged at a position where the light emitted by the light emitting unit 40 can be detected. Further, the detection unit 60 can detect light emitted from the light emitting unit 50 when the card 10 is not inserted into the card insertion slot 30, and detect the light emitted by the light emitting unit 50 when the card 10 is inserted into the card insertion slot 30. 50 is disposed at a position where the emitted light cannot be detected.

  Therefore, the detecting unit 60 can detect the light emitted by the light emitting unit 40 as long as there is no foreign matter. In addition, when the card 10 is not inserted into the card insertion slot 30, the detecting unit 60 can detect the light emitted by the light emitting unit 50 unless there is a foreign substance. However, when the card 10 is inserted into the card insertion slot 30, the detection unit 60 cannot detect the light emitted by the light emitting unit 50.

  However, the detection unit 60 may be arranged at a position where the light emitted by the light emitting unit 50 can be detected regardless of the position of the card 10.

  Further, in FIG. 1, the detection device 100 is illustrated as including one light emitting unit 40, one light emitting unit 50, and one detection unit 60, but this is an example. The detection device 100 may include a plurality of any or all of the light emitting unit 40, the light emitting unit 50, and the detecting unit 60.

  For example, the detection device 100 may include two sets of the light-emitting unit 40, the light-emitting unit 50, and the detection unit 60 so as to sandwich the vicinity of each of the left and right ends of the card insertion slot 30.

  Alternatively, the detection device 100 may detect the light emitted by the light emitting unit 40 and the light emitted by the light emitting unit 50 using different detecting units 60. However, even in this case, the detection unit 60 that detects the light emitting unit 50 can detect the light emitted by the light emitting unit 50 when the card 10 is not inserted, and can detect the light emitted by the light emitting unit 50 when the card 10 is inserted. 50 is disposed at a position where the emitted light cannot be detected.

  Note that the light emitting unit 40, the light emitting unit 50, and the detecting unit 60 are desirably arranged at positions described below.

  When the detection device 100 uses the card 10 including a magnetic stripe, the skimming device is arranged around (near) the card insertion slot 30 at a position where the magnetic stripe passes when the card 10 is transported. In order to detect the skimming device arranged as described above, it is desirable that the light emitting unit 40 and the light emitting unit 50 be arranged so as to sandwich a position in the card insertion slot 30 through which the magnetic stripe of the card 10 passes. Then, it is desirable that the detection unit 60 is arranged at a position where the foreign matter at a position where the magnetic stripe of the card 10 passes can be detected.

  Although FIG. 1 shows the card insertion slot 30 horizontally, this is an example. In the detection device 100, the card insertion slot 30 may be provided in the vertical direction. In that case, the light emitting unit 40, the light emitting unit 50, and the detecting unit 60 may be arranged in a horizontal direction so as to sandwich the card insertion slot 30.

  In the following description of the present embodiment, as an example, as illustrated in FIG. 1, the detection device 100 will be described as including one light emitting unit 40, one light emitting unit 50, and one detection unit 60.

  FIG. 2 is a sectional view of the detection device 100 taken along line AA in FIG.

  The detection device 100 illustrated in FIG. 2 includes a transport unit 80 in addition to the configuration illustrated in FIG. 2, the same reference numerals are given to the components shown in FIG. 1, and detailed description thereof will be omitted. Therefore, the transport unit 80 will be described below.

  The transport unit 80 automatically transports the card 10. For example, the detection device 100 operates as follows. The detection device 100 includes an insertion sensor that detects an insertion position of the card 10 (not shown). When detecting that the card 10 has been inserted to a position where the card 10 can be transported using the transport unit 80 based on the insertion sensor, the detection device 100 transports the card 10 using the transport unit 80. The transport unit 80 is, for example, a roller.

  FIG. 3 is a block diagram illustrating an example of a configuration of the detection device 100 according to the first embodiment.

  As described above, the detection device 100 illustrated in FIG. 3 includes the determination unit 20 that determines the presence or absence of a foreign substance, in addition to the configuration illustrated in FIG. The same reference numerals are given to the components shown in FIG. 1 and their detailed description is omitted. Therefore, the determination unit 20 will be described below.

  The determination unit 20 causes the light emitting unit 40 and the light emitting unit 50 to emit light in a predetermined pattern. Here, the predetermined pattern is not particularly limited. For example, the determination unit 20 may hold a plurality of patterns, select a pattern from among them, and use the selected pattern.

  Note that the pattern is a pattern in which the determination unit 20 causes the light emitting unit 40 and the light emitting unit 50 to emit light and turn off the light. More specifically, the pattern is a combination of a light-emitting time and a light-off time, and includes one or more light-emitting times and a light-off time.

  In addition, the determination unit 20 may change the emission color or the emission intensity as the emission pattern of the light emitting unit 40 or the light emitting unit 50, not limited to the emission time and the extinguishing time. In this case, it is desirable that the detection unit 60 can detect the color or light intensity of the light emitted by the light emitting unit 40 and the light emitting unit 50.

  Hereinafter, a pattern including a change in color and light intensity is referred to as a pattern.

  However, it is desirable that the pattern used by the determination unit 20 has a low possibility of being predicted by the skimming device. Therefore, it is desirable that the determination unit 20 causes the light emitting unit 40 and the light emitting unit 50 to emit light using a random pattern. Here, the random pattern is a pattern in which the next light emission pattern cannot be estimated from the past light emission pattern. That is, a random pattern is a pattern that cannot be estimated by other devices such as skimming devices.

  Therefore, the determination unit 20 may include, for example, a random pattern generation unit (not shown), and cause the light emitting unit 40 and the light emitting unit 50 to emit light using a pattern generated by the random pattern generation unit. Alternatively, the determination unit 20 may include a pseudo random number generation circuit (not shown), and determine the light emission time and the light off time of the light emission pattern based on the random number generated by the pseudo random number generation circuit. Alternatively, the determination unit 20 may hold a plurality of random patterns in advance, and select a light emitting pattern from the held random patterns using a pseudo random number. Hereinafter, these operations are collectively referred to as “random pattern selection”.

  Then, the determination unit 20 determines the presence or absence of a foreign object such as a skimming device based on a pattern (detection result) detected by using the detection unit 60 when the light emitting units 40 and 50 emit light. More specifically, the determining unit 20 determines that there is a foreign substance when the pattern used when the light emitting units 40 and 50 emit light does not match the pattern recognized using the detecting unit 60. .

  Further, the determination unit 20 determines the type of the foreign object based on information (color information) on the color at the predetermined position detected by the detection unit 60 when the light emitting unit 40 and the light emitting unit 50 do not emit light. Here, the color information is information for calculating a color difference described later. Therefore, the detection device 100 may determine the color information based on the color difference used for the determination.

  Next, the determination unit 20 will be further described with reference to the drawings.

  FIG. 4 is a block diagram illustrating an example of a configuration of the detection device 100 including an example of a more detailed configuration of the determination unit 20. 4, the same components as those in FIG. 3 are denoted by the same reference numerals. Therefore, detailed description of the same configuration is omitted.

  The determination unit 20 includes a driving unit 240, a driving unit 250, a recognition unit 260, and a control unit 270. In the case where the driving unit 240 and the driving unit 250 are distinguished from each other, they are hereinafter referred to as a first driving unit and a second driving unit, respectively.

  The drive unit 240 drives the light emitting unit 40 based on the control of the control unit 270. That is, the driving unit 240 causes the light emitting unit 40 to emit light using the pattern selected by the control unit 270 based on the instruction of the control unit 270. The driving unit 240 may directly control the light emitted by the light emitting unit 40. Alternatively, the driving section 240 may indirectly control the light emission of the light emitting section 40. For example, when the light emitting unit 40 includes an LED and a liquid crystal shutter, the driving unit 240 may control the light emitted by the light emitting unit 40 by controlling the liquid crystal shutter.

  The driving unit 250 drives the light emitting unit 50 based on the control of the control unit 270. That is, the driving unit 250 causes the light emitting unit 50 to emit light using the pattern selected by the control unit 270 based on the instruction of the control unit 270. Note that the driving unit 250 may directly or indirectly control the light emitting unit 50 in the same manner as the driving unit 240.

  When the determination unit 20 causes the light emitting unit 40 and the light emitting unit 50 to emit light simultaneously in the same pattern, the determination unit 20 uses one of the driving unit 240 and the driving unit 250 to emit the light emitting unit 40 and the light emitting unit 50. The unit 50 may emit light. In that case, the determination unit 20 may not include any one of the driving unit 240 and the driving unit 250.

  The recognition unit 260 recognizes or extracts information used for the determination by the control unit 270 from the signal detected by the detection unit 60 based on the control of the control unit 270. That is, the recognition unit 260 recognizes the light emission patterns of the light emitting units 40 and 50 based on the detection result of the detection unit 60. Further, the recognition unit 260 extracts color information of a predetermined position used by the control unit 270 based on the detection result of the detection unit 60. The color information need not be limited to colors in the visible light range. For example, the color information may include an infrared band.

  The control unit 270 controls each of the above components, and controls the entire operation of the determination unit 20. Further, the control unit 270 controls each of the above-described components to determine the presence / absence of a foreign substance and the type of the foreign substance near the card insertion slot 30 as described later.

(Description of operation)
Next, the operation of the detection device 100 according to the first embodiment will be described with reference to the drawings.

  FIG. 5 is a flowchart illustrating an example of the operation of the detection device 100 according to the first embodiment. In the following description of the operation, the subject of the operation is the control unit 270 of the determination unit 20 unless otherwise specified.

  The control unit 270 stores, in advance, information (color information) of the color recognized by the recognition unit 260 at a predetermined location (position) in the detection range of the detection unit 60. Hereinafter, the color information stored here is referred to as “initial color information”.

  For example, the control unit 270 stores the initial color information as follows. When the detection device 100 is first installed, the control unit 270 sets the recognition unit 260 to a position different from the light emitting unit 40 and the light emitting unit 50 in the vicinity of the card insertion slot 30 where the skimming device is likely to be mounted. To acquire the color information of. The recognition unit 260 recognizes the color information using the detection unit 60 based on the instruction, and transmits the color information to the control unit 270. The control unit 270 stores the received color information as initial color information. However, the control unit 270 may store the color information without being based on the above operation. For example, the control unit 270 may store in advance the initial color information calculated based on the design information of the detection device 100.

  Further, the control unit 270 may store color information at a plurality of positions instead of one position as the initial color information.

  Next, the details of the specific operation of the detection device 100 will be described. However, in the initial state of the following operation, it is assumed that the light emitting unit 40 and the light emitting unit 50 are turned off.

  First, the control unit 270 of the determination unit 20 selects a random pattern to cause the light emitting unit 40 and the light emitting unit 50 to emit light (step S101).

  Next, the control unit 270 causes the light emitting unit 40 and the light emitting unit 50 to emit light by using the driving unit 240 and the driving unit 250 so as to match the selected random pattern (step S102).

  Then, the control unit 270 uses the detection unit 60 and the recognition unit 260 to acquire the light emission patterns of the light emitting units 40 and 50 (step S103). More specifically, the detection device 100 operates as follows. The control unit 270 instructs the recognition unit 260 to detect the light emission pattern using the detection unit 60. Based on this instruction, the recognition unit 260 uses the detection unit 60 to recognize the light emitting patterns of the light emitting units 40 and 50. Then, the recognition unit 260 transmits the light emission pattern to the control unit 270 as a recognition result.

  If the recognition unit 260 or the detection unit 60 cannot distinguish and recognize the light emitting unit 40 and the light emitting unit 50, the control unit 270 controls each of the light emitting unit 40 and the light emitting unit 50 individually, and performs steps S102 and S103. And execute it. When the light emitting unit 40 and the light emitting unit 50 emit light separately, the control unit 270 may cause the light emitting unit 40 and the light emitting unit 50 to emit light using different light emitting patterns.

  Next, the control unit 270 determines whether the pattern selected in step S101 matches the pattern acquired in step S103 for each of the light emitting units 40 and 50 (step S104).

  When the card 10 is inserted into the card insertion slot 30, the detecting unit 60 cannot detect the light from the light emitting unit 50. For example, when the transport unit 80 is operating, the detection unit 60 cannot detect the light of the light emitting unit 50. However, the detection device 100 controls the transport unit 80 based on an insertion sensor (not shown) as described above. Therefore, the control unit 270 can determine whether or not the card 10 is inserted into the card insertion slot 30 based on an insertion sensor or the like.

  Therefore, when the card 10 is inserted into the card insertion slot 30, the control unit 270 determines whether the card 10 is completely inserted into the card insertion slot 30 or after the card 10 is removed from the card insertion slot 30. The light from the light emitting unit 50 may be detected using the detection unit 60.

  When the patterns of the light emitting unit 40 and the light emitting unit 50 match (Yes in step S104), the control unit 270 returns to step S101. That is, control unit 270 determines that there is no foreign matter.

  If at least one of the patterns does not match the light emitting unit 40 or the light emitting unit 50 (No in step S104), the control unit 270 proceeds to step S105. When the pattern of at least one of the light emitting unit 40 and the light emitting unit 50 does not match, at least one of the upper side and the lower side of the card insertion slot 30, an object that blocks light, emits light, or reflects light. May exist. That is, when the pattern of at least one of the light emitting unit 40 and the light emitting unit 50 does not match, there is a possibility that a foreign matter is present around the card insertion slot 30. Therefore, control unit 270 proceeds to the next determination.

  Thus, the determination in step S104 is a determination of the presence or absence of a foreign substance.

  Here, the skimming device is generally created so as not to be found in order to prevent fraud from being found. That is, there is a high possibility that the skimming device has the same color as the periphery of the card insertion slot 30. Therefore, the detection device 100 determines whether the foreign matter is an illegal foreign matter based on the color information, as described below.

  If the patterns do not match (No in step S104), control unit 270 acquires the current color information at the position where the initial color information was acquired (step S105). The control unit 270 may instruct the recognition unit 260 to acquire the color information based on the same operation as when the initial color information is acquired. Note that the control unit 270 may instruct the recognition unit 260 to acquire the color information at the same time or in parallel with the acquisition of the light emission pattern in step S103. However, the control unit 270 acquires color information when the light emitting unit 40 and the light emitting unit 50 do not emit light. This is because the control unit 270 compares the initial color information with the color information acquired in step S105. Hereinafter, the color information acquired in step S105 is referred to as “detected color information”.

The control unit 270 determines whether the initial color information matches the detected color information (Step S106). Note that the environment of the detection device 100 changes. For example, the brightness differs between early morning and noon. In addition, the brightness differs between fine weather and rainy weather. Therefore, the control unit 270 determines whether or not the absolute value of the difference (color difference) between the initial color information and the detected color information is equal to or less than a predetermined threshold as a determination of the match between the initial color information and the detected color information. judge. Further, control unit 270 may detect environmental light and correct detected color information using recognition unit 260 and detection unit 60. The color difference used in the present embodiment is not particularly limited. For example, the control unit 270 may use a difference in lightness or hue value as the color difference. Alternatively, the control unit 270 uses “ΔE ^* ab = ((ΔL ^* ) ² + (Δa ^* ) ² + (Δb ^* ) ² ) ^1/2 ” which is a color difference in the L ^* a ^* b ^* color system. You may.

  When the color information does not match (No in Step S106), the control unit 270 returns to Step S101. That is, the control unit 270 determines that the color is not an illegal foreign substance when the color is clearly different.

  If the color information matches (Yes in Step S106), the control unit 270 determines that the foreign object is a malicious foreign object (for example, a foreign object related to skimming equipment). Then, the control unit 270 notifies a predetermined device (for example, an alarm device) of the detection of the foreign matter (step S107).

  Thus, the determination in step S106 is a determination of the type of foreign matter.

  Note that the detection device 100 may operate to proceed to step 107 when it is determined that the patterns do not match in step S104 (No in step S104) in order to bring the determination to the safe side. In this case, if it is determined in step S104 that they match (Yes in step S104), the detection device 100 proceeds to step S105.

(Explanation of effect)
Next, effects of the present embodiment will be described.

  As described above, the detection device 100 according to the first embodiment can obtain the effect of improving the detection range of the device near the card insertion slot 30.

  The reason is as follows.

  The detecting device 100 arranges the light emitting unit 40 and the light emitting unit 50 so as to sandwich the card insertion slot 30. Then, the detecting device 100 moves the detecting unit 60 to the card insertion slot 30 on the same side as either the light emitting unit 40 or the light emitting unit 50 and at a predetermined distance from the light emitting unit 40 and the light emitting unit 50. To place. Therefore, the determination unit 20 of the detection device 100 can detect devices in the range from the light emitting unit 40 and the light emitting unit 50 to the detecting unit 60. That is, the detection device 100 can detect a foreign substance that is separated from the card insertion slot 30 by a predetermined distance. This is because the detection device 100 can improve the detection range in the vicinity of the card insertion slot 30 based on such a configuration.

  Further, the detection device 100 can provide an effect of improving detection accuracy.

  The reason is as follows.

  The determination unit 20 causes the light emitting unit 40 and the light emitting unit 50 to emit light based on a pattern (for example, a random pattern) that cannot be estimated. Therefore, an illegal foreign substance such as a skimming device cannot imitate light emission for detection by the detection device 100. Then, the detection device 100 compares the pattern detected by the detection unit 60 with the pattern in which the light emitting unit 40 and the light emitting unit 50 emit light. That is, the detection device 100 can detect a foreign substance based on a pattern that cannot be imitated by a skimming device.

  Further, the detection device 100 determines whether there is a change in color information near the card insertion slot 30. Therefore, the detection device 100 can detect non-illegal foreign substances such as insects near the card insertion slot 30. That is, this is because the detection device 100 can improve the detection accuracy of an illegal foreign substance.

  Further, the detection device 100 does not require high-precision optical equipment.

  The reason is as follows.

  The light emitting unit 40 and the light emitting unit 50 only need to be able to emit light reaching the detection unit 60. The detection unit 60 only needs to be able to determine the presence or absence of light. Therefore, the detection device 100 does not require high-precision optical devices for the light emitting unit 40, the light emitting unit 50, and the detecting unit 60.

[Modification]
Next, a modification of the first embodiment will be described.

[Modification 1]
The detection unit 60 does not necessarily need to be included in the detection device 100. The detection unit 60 may be a device external to the detection device 100.

  FIG. 7 is a diagram illustrating an example of the present modification.

  The detecting device 101 shown in FIG. 7 includes an external detecting unit 70 in place of the detecting unit 60 in the detecting device 100. Here, the detection unit 70 is, for example, a box-type or dome-type camera generally used for crime prevention. Note that the detection unit 70 is not limited to a wired connection, and may be connected to the detection device 101 via wireless.

  The detection unit 70 implements the same function as the detection unit 60. Therefore, the detection device 101 according to the first modification can achieve the same effect as the detection device 100.

  Further, the present modification can provide the effect of further expanding the detection range and improving the degree of freedom of the setting layout of the detection unit 70.

  The reason is that the detection unit 70 can be set at a position different from that of the detection device 101.

[Modification 2]
Either or both of the light emitting unit 40 and the light emitting unit 50 may include a plurality of light emitters (light emitting elements).

  FIG. 6 is a diagram illustrating an example of the light emitting unit 41 and the light emitting unit 51 including a plurality of light emitters. The light emitting unit 41 and the light emitting unit 51 include a plurality of light emitters 401 and light emitters 501, respectively.

  The light emitter 401 and the light emitter 501 are, for example, light emitting elements such as LEDs.

  The detection device 100 and the detection device 101 (hereinafter, collectively referred to as the detection device 100) may include the light emitting unit 41 and / or the light emitting unit 51 instead of the light emitting unit 40 and / or the light emitting unit 50.

  When a plurality of light emitters are included like the light emitting unit 41 and the light emitting unit 51, the determination unit 20 may change the number of light emitters that emit light at the same time. That is, the determination unit 20 may include the number of light emitters in the pattern.

  The present modified example has an effect of being able to detect even when the skimming device is downsized, in addition to the effect of the first embodiment. Further, the present modified example has an effect that skimming devices can be detected in a wider range.

  The reason is that the light emitting unit 41 and the light emitting unit 51 include the plurality of light emitting bodies 401 and the light emitting bodies 501, so that the detecting unit 60 can output a more detailed detection result.

  Further, the present modification can provide an effect of being resistant to dirt.

  The reason is that the light-emitting unit 41 and the light-emitting unit 51 include the plurality of light-emitting bodies 401 and the light-emitting bodies 501. Therefore, even if a part of the light-emitting body 401 and the light-emitting body 501 becomes dirty, the detection unit 60 sets This is because the light emitted by the light emitting unit 51 can be detected.

[Modification 3]
Note that the detection device 100 described so far is configured as follows.

  For example, each component of the detection device 100 may be configured by a hardware circuit.

  Further, the detection device 100 may be configured using a plurality of devices in which each component is connected via a network.

  Further, in the detection device 100, a plurality of components may be configured by one piece of hardware.

  In addition, the determination unit 20 of the detection device 100 may be realized as a computer device including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The determination unit 20 of the detection device 100 may be realized as a computer device including an input / output connection circuit (IOC) and a port interface circuit (PIC) in addition to the above configuration. Good.

  FIG. 8 is a block diagram illustrating an example of a configuration of the determination unit 600 according to the present modification.

  The determination unit 600 includes a CPU 610, a ROM 620, a RAM 630, an internal storage device 640, an IOC 650, and a PIC 680, and forms a computer device.

  CPU 610 reads a program from ROM 620. Then, the CPU 610 controls the RAM 630, the internal storage device 640, the IOC 650, and the PIC 680 based on the read program. Then, the computer including the CPU 610 controls these components, and realizes each function as the determination unit 20 illustrated in FIGS.

  When realizing each function, the CPU 610 may use the RAM 630 or the internal storage device 640 as temporary storage of a program.

  In addition, the CPU 610 may use a storage medium reading device (not shown) to read a program included in the storage medium 700 that stores the program in a computer-readable manner. Alternatively, the CPU 610 may receive a program from an external device (not shown) via the PIC 680, store the program in the RAM 630, and operate based on the stored program.

  The ROM 620 stores programs executed by the CPU 610 and fixed data. The ROM 620 is, for example, a P-ROM (Programmable-ROM) or a flash ROM.

  RAM 630 temporarily stores programs and data executed by CPU 610. The RAM 630 is, for example, a D-RAM (Dynamic-RAM).

  The internal storage device 640 stores data and programs stored by the determination unit 600 for a long term. Further, the internal storage device 640 may operate as a temporary storage device of the CPU 610. The internal storage device 640 is, for example, a hard disk device, a magneto-optical disk device, an SSD (Solid State Drive), or a disk array device.

  Here, the ROM 620 and the internal storage device 640 are non-transitory storage media. On the other hand, the RAM 630 is a volatile storage medium. The CPU 610 is operable based on a program stored in the ROM 620, the internal storage device 640, or the RAM 630. That is, the CPU 610 can operate using a nonvolatile storage medium or a volatile storage medium.

  The IOC 650 mediates data between the CPU 610 and the input device 660 and the display device 670. The IOC 650 is, for example, an IO interface card or a USB (Universal Serial Bus) card.

  The input device 660 is a device that receives an input instruction from an operator of the detection device 100. The input device 660 is, for example, a keyboard, a mouse, or a touch panel.

  The display device 670 is a device that displays information to an operator of the detection device 100. The display device 670 is, for example, a liquid crystal display. For example, the display device 670 may display a notification of detection of a foreign substance in step S107.

  The PIC 680 relays data exchange with other components (for example, the light emitting unit 40, the light emitting unit 50, and the detecting unit 60) via a bus or a signal line. That is, the PIC 680 operates as a part of the driving unit 240, the driving unit 250, and the recognition unit 260. The PIC 680 is, for example, a PCI (Peripheral Component Interface) card, a NIC (Network Interface Circuit) card, or a LAN (Local Area Network) card. Alternatively, the PIC 680 is a parallel input / output circuit (PIO: Parallel Input Output circuit) and an AD / DA (Analog Digital / Digital Analog) converter.

  The determining unit 600 configured as described above can obtain the same effect as the determining unit 20 shown in FIGS.

  The reason is that the CPU 610 of the determination unit 600 can realize the same function as the determination unit 20 based on a program.

<Second embodiment>
The detection device 100 may further include a determination operation in addition to the determination described with reference to FIG.

Therefore, as a second embodiment, an additional determination will be described.
Note that the configuration of the second embodiment is the same as the detection device 100 shown in FIG. 1 and the detection device 101 shown in FIG. Therefore, the description of the configuration in the second embodiment is omitted. Hereinafter, description will be made with reference to the detection device 101 shown in FIG. However, the present embodiment may be configured using the computer shown in FIG.

  The operation of the detection device 101 according to the second embodiment is the same as that of the first embodiment except for additional determination. Therefore, the description of the same operation as in the first embodiment will be omitted, and the operation unique to the present embodiment will be described. Note that the detection device 101 according to the second embodiment may perform the determination described below independently of the determination operation in the first embodiment, or may perform the determination in combination.

  The detection device 101 according to the present embodiment uses the detection unit 70 to determine foreign matter based on the shape of the card 10 at a predetermined position. Here, the predetermined position is, for example, a position where the card 10 is inserted from the card insertion slot 30 for a predetermined length. The detection device 101 may detect a predetermined position using the insertion sensor (not shown) described above.

  More specifically, the detection device 101 operates as follows.

  First, the control unit 270 of the determination unit 20 uses the detection unit 70 and the recognition unit 260 in advance (for example, when the detection device 101 is installed) to determine the shape of the card 10 at a predetermined position (for example, the length shown in FIG. 7). (L) and width (W)) are measured and stored. Hereinafter, the shape at this time is referred to as an “initial shape”.

  Note that the recognition unit 260 may measure the shape of the card 10 using general image processing. For example, the recognition unit 260 may measure the shape of the card 10 based on the color information of the image information detected by the detection unit 70.

  However, the detection device 100 may store the initial shape without based on the measurement. For example, the detection device 100 may store a calculated value of the shape of the card 10 at a predetermined position calculated based on the design specification of the detection device 100.

  Then, the control unit 270 of the detection device 101 measures the shape of the card 10 using the detection unit 70 and the recognition unit 260 when the card 10 is inserted into a predetermined position. Hereinafter, the shape at this time is referred to as a “detected shape”. Note that the detection device 100 may measure the shape every predetermined number of times instead of every time the card 10 is inserted.

  Then, control unit 270 determines whether or not the initial shape and the detected shape match. As this determination, control unit 270 determines whether or not the difference between the initial shape and the detected shape falls within a predetermined range.

  If the shapes match, control unit 270 determines that there is no foreign substance.

  On the other hand, if the shapes do not match, control unit 270 determines that there is a foreign substance.

  As described above, the present embodiment can achieve the effect of improving the detection accuracy of foreign matter, in addition to the effect of the first embodiment.

  The reason is that the determination unit 20 of the present embodiment can detect foreign matter based on the shape of the card 10 at a predetermined position using the detection unit 70 and the recognition unit 260.

DESCRIPTION OF SYMBOLS 10 Card 20 Judgment part 30 Card insertion slot 40 Light emission part 41 Light emission part 50 Light emission part 51 Light emission part 60 Detection part 70 Detection part 80 Transport part 100 Detection device 101 Detection device 240 Drive part 250 Drive part 260 Recognition part 270 Control part 401 Light emission Body 501 Light-emitting body 600 Judgment unit 610 CPU
620 ROM
630 RAM
640 Internal storage device 650 IOC
660 Input device 670 Display device 680 PIC
700 storage medium

Claims (8)

First light emitting means for emitting first detection light;
A second light emitting unit that emits second detection light provided on a side opposite to the first light emitting unit with respect to a card insertion slot for inserting a card;
A detecting unit that is installed at a position separated by a predetermined distance from the first light emitting unit and the second light emitting unit and detects the first detection light and the second detection light;
The first light emitting means and the second light emitting means are caused to emit light using respective predetermined patterns, and the pattern of the first detection light and the pattern of the second detection light are obtained using the detection means. Then, it is determined whether or not the pattern of the first detection light and the pattern of the second detection light coincide with the pattern for emitting light, and the pattern of the first detection light or the second When at least one of the detection light patterns does not match the pattern for causing light emission, color information at a predetermined position when the first light emitting means and the second light emitting means do not emit light is obtained. A determination unit that determines whether the acquired color information matches the color information stored in advance, and determines that a foreign object is attached when the color information matches. apparatus. The determining means includes:
Driving means for emitting light using the respective predetermined patterns of the first light emitting means and the second light emitting means;
Recognition means for recognizing the pattern of the first detection light and the pattern and color information of the second detection light using the detection means,
The detection device according to claim 1, further comprising: a control unit that controls the driving unit and the recognition unit to execute the determination. The determining means includes:
Using the detecting means, measure the shape of the card inserted into a predetermined position of the card insertion slot,
The detection device according to claim 1, wherein the presence or absence of a foreign object is determined based on the measured shape and an initial shape held in advance. The detection device according to any one of claims 1 to 3, wherein at least one of the first light emitting unit or the second light emitting unit includes a plurality of light emitters. The detecting means,
The detection device according to any one of claims 1 to 4, wherein the detection device is an external device connected to the detection device. The determining means includes:
The detection device according to any one of claims 1 to 5, wherein the first light emitting means and the second light emitting means emit light using different random patterns. First light emitting means for emitting first detection light;
A second light emitting unit that emits second detection light provided on a side opposite to the first light emitting unit with respect to a card insertion slot for inserting a card;
A detection unit that is installed at a position separated by a predetermined distance from the first light emitting unit and the second light emitting unit, and that detects the first detection light and the second detection light;
Causing the first light emitting means and the second light emitting means to emit light using respective predetermined patterns,
Using the detection means to obtain a pattern of the first detection light and a pattern of the second detection light,
It is determined whether or not the pattern of the first detection light and the pattern of the second detection light match the pattern for emitting light,
When at least one of the pattern of the first detection light or the pattern of the second detection light does not match the pattern for emitting light, the first light emitting means and the second light emitting means emit light. To obtain the color information of the predetermined position when not
Determine whether the obtained color information matches the color information stored in advance,
A detection method for determining that a foreign object is attached when the color information matches. First light emitting means for emitting first detection light;
A second light emitting unit that emits second detection light provided on a side opposite to the first light emitting unit with respect to a card insertion slot for inserting a card;
A detection unit that is installed at a position separated by a predetermined distance from the first light emitting unit and the second light emitting unit, and that detects the first detection light and the second detection light. On the computer,
Processing of causing the first light emitting means and the second light emitting means to emit light using respective predetermined patterns;
A process of acquiring the pattern of the first detection light and the pattern of the second detection light using the detection unit;
A process of determining whether the pattern of the first detection light and the pattern of the second detection light match the pattern for emitting light,
When at least one of the pattern of the first detection light or the pattern of the second detection light does not match the pattern for emitting light, the first light emitting means and the second light emitting means emit light. Processing for acquiring color information at a predetermined position when the color information is not
A process of determining whether the acquired color information matches the color information stored in advance,
And a process for determining that a foreign object is attached when the color information matches.

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