JP6475055B2 - Detection device, detection method, and program - Google Patents

Description

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

  Automatic transaction machines such as ATM (Automated Teller Machine) or CD (Cash Dispenser) are widely used. The automatic transaction machine performs user authentication 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 social problems.

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

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

  However, there are factors that affect the detection performance of the detection device in the environment where the detection device is installed. Such factors include light-related factors (for example, ambient 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 slot. (For example, insects, users, or user belongings).

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

  Therefore, various methods such as Patent Document 1 and Patent Document 2 are used.

  In the technique described in Patent Document 1, foreign matter sensors are provided above and below the card insertion slot to improve detection accuracy.

  Moreover, the technique described in Patent Document 2 irradiates a light beam having 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.

  Further, the technique described in Patent Document 2 requires that a predetermined range is irradiated with rays of a lattice pattern. In order to irradiate a light beam on a lattice pattern, a light source (for example, a laser light source) that emits a light beam narrowed down to a predetermined range and an optical device for narrowing down are necessary. Further, in order to irradiate the lattice pattern with light rays, a highly accurate optical device such as a polygon mirror is required. That is, the technique described in Patent Document 2 has a problem in that it requires high-function and high-precision optical equipment (hereinafter referred to as advanced optical equipment).

  An object of the present invention is to provide a detection device, a detection method, and a program for solving the above-described problems and improving the detection range and detection accuracy of a device provided in a card insertion slot without requiring an advanced optical device. It is to provide.

  A detection device according to an aspect 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 the opposite side of the first light emitting unit with respect to a card insertion slot for inserting a card. A second light-emitting means for emitting two detection lights, and the first light-emitting means and the second light-emitting means are installed at a predetermined distance from the first light-emitting means and the second light-emitting means to detect the first detection light and the second detection light. The first detection light using the detection means, and the first detection light using the detection means, and the first light emission means and the second light emission means are emitted using a random pattern that cannot be estimated from the past pattern. The first detection light pattern and the second detection light pattern are acquired, and it is determined whether or not the first detection light pattern and the second detection light pattern match the light emission pattern. Detection light pattern or second detection When at least one of the 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 are not emitting light is acquired, and the acquired color information Determining means for determining whether or not the color information stored in advance matches, and determining that a foreign object is attached when the color information matches.

  A detection method according to an aspect 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 means for emitting two detection lights, and the first light-emitting means and the second light-emitting means are installed at a predetermined distance from the first light-emitting means and the second light-emitting means to detect the first detection light and the second detection light. In the detection apparatus including the detecting means, the first light emitting means and the second light emitting means are caused to emit light using a random pattern that is a pattern that cannot be estimated from the past pattern, and the detecting means is used. The first detection light pattern and the second detection light pattern are acquired, and it is determined whether or not the first detection light pattern and the second detection light pattern match the light emission pattern. And the first detection light Color information of a predetermined position when the first light emitting means and the second light emitting means are not emitting light when at least one of the pattern of the turn or the second detection light does not coincide with the pattern for emitting light. It is determined whether or not the acquired color information matches the color information stored in advance. If the color information matches, it is determined that a foreign object is attached.

  A program according to an aspect of the present invention includes a first light-emitting unit that emits first detection light, and a second light-emitting device provided on the opposite side of the first light-emitting unit with respect to a card insertion slot for inserting a card. The second light emitting means for emitting the detection light, and the first light emitting means and the second light emitting means are disposed at a predetermined distance from the first light emitting means and the second light emitting means to detect the first detection light and the second detection light. A process of causing a computer, which is a detection device including a detection means, to emit light using a random pattern that cannot be estimated from a past pattern as a pattern for causing the first light emission means and the second light emission means to emit light, and detection The process of obtaining the first detection light pattern and the second detection light pattern using the means, and the first detection light pattern and the second detection light pattern coincide with the pattern for emitting light. Do The first light-emitting means and the second light-emitting means when at least one of the first determination light pattern and the second detection light pattern does not match the light emission pattern. The color information matches the processing for acquiring the color information at a predetermined position when no light is emitted, the processing for determining whether the acquired color information matches the color information stored in advance, or not. In this case, a process for determining that a foreign object is attached is executed.

  According to the present invention, it is possible to achieve the effect of improving the detection range and detection accuracy of the device provided in the card insertion slot without requiring an advanced optical device.

FIG. 1 is a diagram illustrating an example of a configuration of a detection apparatus according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating an example of the configuration of the detection device according to the first embodiment. FIG. 3 is a block diagram illustrating an example of the configuration of the detection apparatus according to the first embodiment. FIG. 4 is a block diagram illustrating an example of a configuration of a 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 apparatus 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 apparatus according to the first embodiment. FIG. 8 is a block diagram illustrating an example of another configuration of the detection apparatus according to the first embodiment.

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

  Each drawing is for explaining an embodiment of the present invention. However, the present invention is not limited to the description of each drawing. Moreover, the same number is attached | subjected to the same structure of each drawing, and the repeated description may be abbreviate | omitted.

  Further, in the drawings used for the following description, the description of the configuration of the part not related to the description of the present invention is omitted, and there are cases where it is not illustrated.

  The embodiment of the present invention detects a foreign object installed in the vicinity of a 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, back surface, both surfaces, or inside. Alternatively, the card of the present embodiment may be an IC (Integrated Circuit) card that electrically reads and writes information. Alternatively, the card according to the present embodiment may be a card having a magnetic recording surface on one side (for example, a magnetic ticket). That is, in the following description, a card is an object having a substantially planar shape and storing information on the surface or inside.

<First Embodiment>
First, the configuration of the detection apparatus 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 the configuration of the detection apparatus 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 detection unit 60. As will be described later, the detection apparatus 100 includes a determination unit 20 (not shown in FIG. 1). Moreover, when distinguishing the light emission part 40 and the light emission part 50, each is called the 1st light emission part and the 2nd light emission part. Further, as will be 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 from the light emitting unit 40 and the light emitted from 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.

  As will be described later, the light emitting unit 40 and the light emitting unit 50 are controlled by the determination unit 20 to emit light in a predetermined pattern. 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 special optical equipment. For example, the light emitting unit 40 and the light emitting unit 50 may be light emitting diodes (LEDs).

  Note that the light emitting unit 40 and the light emitting unit 50 preferably emit light (for example, infrared rays) that cannot be recognized by a person in order to avoid misidentification by the user. This is to prevent an unauthorized person who wants 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 unit 40 and the light emitting unit 50. More specifically, the detection part 60 should just detect light to such an extent that the determination part 20 can recognize the light emission pattern of the light emission part 40 and the light emission part 50 so that it may demonstrate later. For example, if the determination unit 20 can detect a pattern based on the light emission state and the light-off state in the light-emitting unit 40 and the light-emitting unit 50, the detection 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 highly accurate optical system. The detection unit 60 is, for example, an image sensor or a CCD (Charge Coupled Device) camera module.

  And the light emission part 40, the light emission part 50, and the detection part 60 are arrange | positioned in the position demonstrated below.

  The light emitting unit 40 and the light emitting unit 50 are arranged at a position sandwiching the card insertion slot 30. That is, the light emitting unit 40 and the light emitting unit 50 are disposed at positions facing the card insertion slot 30. This is because an unauthorized device (skimming device) can be detected regardless of which side of the card insertion slot 30 is installed.

  The detection unit 60 is disposed on the same side as the light emitting unit 40 or the light emitting unit 50 with respect to the card insertion slot 30 at a position away from the light emitting unit 40 and the light emitting unit 50 by a predetermined distance. Here, the predetermined distance is a distance including a range in which a foreign object is assumed to be installed. Thus, 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.

  Furthermore, the detection 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 ports 30.

  As an example, it is assumed that the detection unit 60 is disposed 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 disposed at a position where the light emitted from the light emitting unit 40 can be detected. Furthermore, 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 when the card 10 is inserted into the card insertion slot 30, the light emitting unit It arrange | positions in the position which cannot detect the light which 50 emits light.

  Therefore, the detection unit 60 can detect the light emitted from the light emitting unit 40 as long as there is no foreign object. Moreover, the detection part 60 can detect the light which the light emission part 50 light-emits, as long as there is no foreign material, when the card | curd 10 is not inserted in the card insertion slot 30. FIG. However, the detection unit 60 cannot detect the light emitted from the light emitting unit 50 when the card 10 is inserted into the card insertion slot 30.

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

  Moreover, in FIG. 1, although the detection apparatus 100 is shown as including the light emission part 40, the light emission part 50, and the detection part 60, respectively, 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 the left and right ends of the card insertion slot 30.

  Alternatively, the detection device 100 may detect the light emitted from the light emitting unit 40 and the light emitted from the light emitting unit 50 using different detection units 60. However, even in this case, the detection unit 60 that detects the light emitting unit 50 can detect the light emitted from the light emitting unit 50 when the card 10 is not inserted, and the light emitting unit when the card 10 is inserted. It arrange | positions in the position which cannot detect the light which 50 emits light.

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

  When the detection device 100 uses the card 10 including the magnetic stripe, the skimming device is arranged around the card insertion slot 30 in a position where the magnetic stripe passes when the card 10 is conveyed. In order to detect the skimming device arranged in this way, it is desirable that the light emitting unit 40 and the light emitting unit 50 are arranged so as to sandwich the position where the magnetic stripe of the card 10 passes through the card insertion slot 30. And it is desirable for the detection part 60 to be arrange | positioned in the position which can detect the foreign material of the position where the magnetic stripe of the card | curd 10 passes.

  Moreover, although FIG. 1 has shown the card insertion slot 30 horizontally, this is an illustration. The detection apparatus 100 may provide the card insertion slot 30 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 side by side in the 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, it is assumed that the detection apparatus 100 includes one light emitting unit 40, one light emitting unit 50, and one detection unit 60.

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

  2 includes a transport unit 80 in addition to the configuration shown in FIG. 2, the same reference numerals are given to the components shown in FIG. 1, and detailed descriptions thereof are omitted. Therefore, the conveyance unit 80 will be described below.

  The transport unit 80 automatically transports the card 10. For example, the detection apparatus 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 up 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 the configuration of the detection apparatus 100 according to the first embodiment.

  As already described, the detection device 100 shown in FIG. 3 includes a determination unit 20 that determines the presence or absence of foreign matter in addition to the configuration shown in FIG. The same reference numerals are given to the components shown in FIG. 1, and a detailed description thereof will be 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 them, and use the selected pattern.

  The pattern is a pattern that the determination unit 20 causes the light emitting unit 40 and the light emitting unit 50 to emit light and extinguish. More specifically, the pattern is a combination of a light emission time and a light off time, and includes one or more light emission times and a light off time.

  Note that the determination unit 20 may change the light emission color or the light emission intensity as the light emission pattern of the light emitting unit 40 or the light emitting unit 50, limited to the light emission time and the light off time. In this case, it is desirable that the detection unit 60 can detect the color or light intensity of the light emitted from the light emitting unit 40 and the light emitting unit 50.

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

  However, it is desirable that the pattern used by the determination unit 20 is less likely to be 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, the random pattern is a pattern that cannot be guessed by another device such as a skimming device.

  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 emission 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 turn-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 emission pattern from the held random patterns using a pseudo random number. Hereinafter, these operations are collectively referred to as “random pattern selection”.

  And the determination part 20 determines the presence or absence of foreign materials, such as a skimming apparatus, based on the pattern (detection result) detected using the detection part 60 when the light emission part 40 and the light emission part 50 light-emitted. More specifically, the determination unit 20 determines that there is a foreign object when the pattern used when the light emitting unit 40 and the light emitting unit 50 emit light and the pattern recognized using the detection unit 60 do not match. .

  Furthermore, the determination unit 20 determines the type of foreign matter based on information (color information) regarding the color at a predetermined position detected by the detection unit 60 when the light emitting unit 40 and the light emitting unit 50 are not emitting light. Here, the color information is information for calculating a color difference which will be described later. Therefore, the detection apparatus 100 may determine color information based on the color difference used for 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 apparatus 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 drive unit 240, a drive unit 250, a recognition unit 260, and a control unit 270. In the case of distinguishing between the drive unit 240 and the drive unit 250, they are hereinafter referred to as a first drive unit and a second drive unit, respectively.

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

  The drive 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 from the control unit 270. In addition, the drive part 250 may control the light emission part 50 directly or indirectly like the drive part 240. FIG.

  In addition, when the determination part 20 makes the light emission part 40 and the light emission part 50 light-emit in the same pattern simultaneously, the determination part 20 uses any one of the drive part 240 or the drive part 250, and the light emission part 40 and light emission. The unit 50 may emit light. In that case, the determination unit 20 may not include any one of the drive unit 240 or the drive unit 250.

  Based on the control of the control unit 270, 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. That is, the recognition unit 260 recognizes the light emission patterns of the light emitting unit 40 and the light emitting unit 50 based on the detection result of the detection unit 60. Further, the recognition unit 260 extracts color information at 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, this color information may include an infrared band.

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

(Description of operation)
Next, the operation of the detection apparatus 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 apparatus 100 according to the first embodiment. In the following description of the operation, unless otherwise specified, the subject of the operation is the control unit 270 of the determination unit 20.

  The control unit 270 stores color information (color information) recognized by the recognition unit 260 at a predetermined location (position) in the detection range of the detection unit 60 in advance. 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 apparatus 100 is first installed, the control unit 270 is located at 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 attached to the recognition unit 260. Instructs the acquisition of color information. 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 the initial color information. However, the control unit 270 may store color information without being based on the above operation. For example, the control unit 270 may store the initial color information calculated based on the design information of the detection apparatus 100 in advance.

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

  Next, details of a specific operation of the detection apparatus 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 in order 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 using the driving unit 240 and the driving unit 250 so as to match the selected random pattern (step S102).

  And the control part 270 acquires the light emission pattern of the light emission part 40 and the light emission part 50 using the detection part 60 and the recognition part 260 (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 recognizes the light emission pattern in the light emitting unit 40 and the light emitting unit 50 using the detection unit 60. And the recognition part 260 transmits a light emission pattern to the control part 270 as a recognition result.

  In addition, when the recognition part 260 or the detection part 60 cannot distinguish and recognize the light emission part 40 and the light emission part 50, the control part 270 controls each of the light emission part 40 and the light emission part 50 separately, and step S102 and step S103 And execute. When the light emitting unit 40 and the light emitting unit 50 are caused to 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 emission patterns.

  Next, the control unit 270 determines, for each of the light emitting unit 40 and the light emitting unit 50, whether or not the pattern selected in step S101 matches the pattern acquired in step S103 (step S104).

  When the card 10 is inserted into the card insertion slot 30, the detection 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 from the light emitting unit 50. However, the detection apparatus 100 controls the transport unit 80 based on an insertion sensor (not shown) as already described. 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 has the card 10 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 detecting 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, the control unit 270 determines that there is no foreign object.

  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, an object that blocks light, an object that emits light, or an object that reflects light is at least either above or below the card insertion slot 30 May exist. That is, when at least one of the patterns of the light emitting unit 40 or the light emitting unit 50 does not match, there is a possibility that there is a foreign object around the card insertion slot 30. Therefore, the control unit 270 proceeds to the next determination.

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

  Here, the skimming device is generally created so as not to be detected in order to prevent fraud from being detected. 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 apparatus 100 determines whether the foreign object is an illegal foreign object based on the color information, as will be described next.

  If the patterns do not match (No in step S104), the control unit 270 acquires the current color information at the position where the initial color information has been acquired (step S105). The control unit 270 may instruct the recognition unit 260 to acquire color information based on the same operation as when initial color information is acquired. Note that the control unit 270 may instruct the recognition unit 260 to acquire color information simultaneously 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 are not emitting 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 or not the initial color information matches the detected color information (step S106). Note that the environment of the detection apparatus 100 changes. For example, the brightness is different between early morning and noon. Also, the brightness differs between clear 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, the control unit 270 may detect the ambient light by using the recognition unit 260 and the detection unit 60 and correct the detected color information. Note that the color difference used in the present embodiment is not particularly limited. For example, the control unit 270 may use a difference in brightness or hue 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. May be.

  If 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 it is not an illegal foreign object when the color is clearly different.

  When the color information matches (Yes in step S106), the control unit 270 determines that the object is a malicious foreign object (for example, a foreign object related to the skimming device). And the control part 270 notifies the detection of a foreign material to a predetermined | prescribed apparatus (for example, alarm device) (step S107).

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

  Note that the detection apparatus 100 may operate so as to proceed to step 107 when it is determined in step S104 that the patterns do not match (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 apparatus 100 proceeds to step S105.

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

  As described so far, the detection device 100 according to the first embodiment can obtain an effect that the detection range of the device in the vicinity of the card insertion slot 30 is improved.

  The reason is as follows.

  The detection device 100 arranges the light emitting unit 40 and the light emitting unit 50 so as to sandwich the card insertion slot 30. And the detection apparatus 100 is the position which left | separated predetermined distance from the light emission part 40 and the light emission part 50 on the same side as any one of the light emission part 40 or the light emission part 50 with respect to the card insertion port 30 with respect to the detection apparatus 100. To place. Therefore, the determination unit 20 of the detection apparatus 100 can detect the 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 apparatus 100 can detect a foreign object that is separated from the card insertion slot 30 by a predetermined distance. This is because the detection apparatus 100 can improve the detection range in the vicinity of the card insertion slot 30 based on such a configuration.

  Furthermore, the detection apparatus 100 can produce 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 that cannot be estimated (for example, a random pattern). For this reason, unauthorized foreign substances such as skimming equipment cannot imitate the light emission for detection by the detection device 100. And the detection apparatus 100 compares the pattern which the detection part 60 detected with the pattern which made the light emission part 40 and the light emission part 50 light-emit. That is, the detection apparatus 100 can detect a foreign object based on a pattern that cannot be imitated by a skimming device.

  Furthermore, the detection apparatus 100 determines whether or not there is a change in color information near the card insertion slot 30. Therefore, the detection device 100 can detect a foreign object such as a bug in the vicinity of the card insertion slot 30. That is, the detection apparatus 100 can improve the detection accuracy of unauthorized foreign substances.

  Moreover, the detection apparatus 100 does not require a highly accurate optical apparatus.

  The reason is as follows.

  The light emitting unit 40 and the light emitting unit 50 only need to emit light reaching the detection unit 60. Moreover, the detection part 60 should just determine the presence or absence of light. Therefore, the detection apparatus 100 does not require a highly accurate optical device for the light emitting unit 40, the light emitting unit 50, and the detection unit 60.

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

[Modification 1]
The detection unit 60 is not necessarily 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 this modification.

  A detection device 101 shown in FIG. 7 includes an external detection unit 70 instead of the detection unit 60 in the detection 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 realizes 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.

  Furthermore, the present modification can provide an effect that the detection range is further expanded and the degree of freedom of the setting layout of the detection unit 70 is improved.

  The reason is that the detection unit 70 can be set at a position different from 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 emitting bodies 401 and light emitting bodies 501, respectively.

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

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

  In addition, when including the some light-emitting body like the light emission part 41 and the light emission part 51, the determination part 20 may change the number of the light-emitting bodies made to light-emit simultaneously. That is, the determination unit 20 may include the number of light emitters in the pattern.

  In addition to the effect of the first embodiment, the present modification can provide an effect that it can be detected even when the skimming device is downsized. Moreover, this modification can produce an effect that the skimming device can be detected in a wider range.

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

  Moreover, this modification can have an effect of being resistant to dirt.

  The reason is that the light-emitting unit 41 and the light-emitting unit 51 include a plurality of light-emitting bodies 401 and light-emitting bodies 501, so that even if the light-emitting body 401 and the light-emitting body 501 are contaminated, the detection unit 60 This is because the light emitted from the light emitting unit 51 can be detected.

[Modification 3]
In addition, the detection apparatus 100 demonstrated so far is comprised as follows.

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

  Moreover, the detection apparatus 100 may be configured using a plurality of apparatuses in which each component is connected via a network.

  Moreover, the detection apparatus 100 may configure a plurality of components by a single piece of hardware.

  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 that includes an input / output 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 the configuration of the determination unit 600 according to this 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 constitutes a computer device.

  The CPU 610 reads a program from the ROM 620. The CPU 610 controls the RAM 630, the internal storage device 640, the IOC 650, and the PIC 680 based on the read program. The computer including the CPU 610 controls these configurations and implements each function as the determination unit 20 illustrated in FIGS. 3 and 4.

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

  The CPU 610 may read a program included in the storage medium 700 that stores the program so as to be readable by a computer using a storage medium reading device (not shown). 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.

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

  The internal storage device 640 stores data and programs that the determination unit 600 saves for a long time. Further, the internal storage device 640 may operate as a temporary storage device for 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 can operate 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, 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 apparatus 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 the operator of the detection apparatus 100. The display device 670 is a liquid crystal display, for example. For example, the display device 670 may display a notification of foreign object detection 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) or an AD / DA (Analog Digital / Digital Analog) converter.

  The determination unit 600 configured as described above can obtain the same effects as those of the determination unit 20 shown in FIGS.

  This is because the CPU 610 of the determination unit 600 can realize the same function as the determination unit 20 based on the program.

<Second Embodiment>
The detection apparatus 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.
The configuration of the second embodiment is the same as that of the detection apparatus 100 shown in FIG. 1 and the detection apparatus 101 shown in FIG. Therefore, the description about a structure is abbreviate | omitted to 2nd Embodiment. Hereinafter, description will be given with reference to the detection apparatus 101 shown in FIG. However, this embodiment may be configured using the computer shown in FIG.

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

  The detection apparatus 101 according to the present embodiment uses the detection unit 70 to determine a foreign object 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 by a predetermined length. The detection apparatus 101 may detect a predetermined position using the already-described insertion sensor (not shown).

  More specifically, the detection apparatus 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 apparatus 101 is installed) in advance 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 apparatus 100 may store the initial shape without being based on the measurement. For example, the detection device 100 may store the 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 apparatus 101 measures the shape of the card 10 using the detection unit 70 and the recognition unit 260 when the card 10 is inserted at 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, the control unit 270 determines whether or not the initial shape matches the detected shape. As this determination, the control unit 270 determines whether or not the difference between the initial shape and the detected shape is included in a predetermined range.

  When the shapes match, the control unit 270 determines that there is no foreign object.

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

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

  The reason is that the determination unit 20 of the present embodiment can detect a foreign object 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 Determination 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 Conveyance part 100 Detection apparatus 101 Detection apparatus 240 Drive part 250 Drive part 260 Recognition part 270 Control part 401 Light emission Body 501 illuminant 600 determination unit 610 CPU
620 ROM
630 RAM
640 Internal storage device 650 IOC
660 Input device 670 Display device 680 PIC
700 storage media

Claims (8)

First light emitting means for emitting first detection light;
A second light emitting means for emitting a second detection light provided on the opposite side of the first light emitting means with respect to a card insertion slot for inserting a card;
A detection means installed at a position away from the first light emission means and the second light emission means by a predetermined distance, and detecting 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 a random pattern that is a pattern that cannot be estimated from a past pattern, and the detection means is used to emit the first detection light. Obtaining a pattern and a pattern of the second detection light, determining 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 first detection light pattern or the second detection light pattern does not match the light emission pattern, the first light emission means and the second light emission means emit light. Color information at a predetermined position when the color information is not acquired, and it is determined whether the acquired color information matches the color information stored in advance. Detection device comprising a determination unit and is attached. The determination means is
Driving means for emitting light using the random pattern of the first light emitting means and the second light emitting means;
Recognizing means for recognizing the pattern of the first detection light and the pattern of the second detection light and the color information 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 determination means is
Using the detection 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 / 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 means or the second light emitting means includes a plurality of light emitters. The detecting means;
The detection apparatus according to claim 1, wherein the detection apparatus is an external apparatus connected to the detection apparatus. The determination means is
The detection device according to any one of claims 1 to 5, wherein the first light emitting unit and the second light emitting unit are caused to emit light using different random patterns. First light emitting means for emitting first detection light;
A second light emitting means for emitting a second detection light provided on the opposite side of the first light emitting means with respect to a card insertion slot for inserting a card;
Said first light emitting means and which is provided at a predetermined distance away from said second light emitting means, the detection device comprising detection means for detecting the first detection light and the second detection light,
As a pattern for causing the first light emitting means and the second light emitting means to emit light, light is emitted using a random pattern that cannot be estimated from a past pattern,
Using the detection means to obtain a pattern of the first detection light and a pattern of the second detection light;
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 first detection light pattern or the second detection light pattern does not match the light emission pattern, the first light emission means and the second light emission means emit light. Get the color information of the predetermined position when not
Determining whether the acquired 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 means for emitting a second detection light provided on the opposite side of the first light emitting means with respect to a card insertion slot for inserting a card;
And a detection unit that is installed at 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. On the computer,
A process of emitting light using a random pattern that is a pattern that cannot be estimated from a past pattern as a pattern for causing the first light emitting means and the second light emitting means to emit light;
Processing for obtaining the pattern of the first detection light and the pattern of the second detection light using the detection means;
A process of determining whether or not the pattern of the first detection light and the pattern of the second detection light match the pattern for causing light emission;
When at least one of the first detection light pattern or the second detection light pattern does not match the light emission pattern, the first light emission means and the second light emission means emit light. Processing to obtain color information at a predetermined position when not,
A process for determining whether or not the acquired color information matches the color information stored in advance;
A program that executes a process of determining that a foreign object is attached when the color information matches.

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