JPH0449479A - Token card reader - Google Patents

Abstract

PURPOSE:To improve workability by storing perforated data and unperforated data in each sensor, finding out a threshold level in each sensor and comparing the threshold level with a measured value. CONSTITUTION:A token card 1 perforated on prescribed positions is inserted into a reader 3, a scanning part 102 starts scanning when a switch 101 is turned on, and light emitting diodes are successively emitted. Thereby, data are successively outputted from an A/D converter 105 correspondingly to perforated positions and unperforated positions on the token card 1 and supplied to a threshold level calculating part 1010 to calculate respective threshold levels. The threshold levels calculated in respective photodetecting diodes are supplied to a comparator 109 and compared with measured data to decide the perforated state or unperforated state and an output signal corresponding to the decided result is generated. Thereby, a perforated state or an unperforated state can be decided in each photodetecting diode. Thus, setting operation can be simplified.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention reads the information of a hole punched at the planned punching position of a card, and reads the information held by the card (hereinafter, this information is defined as a token). ) is related to a token card reading device for identifying.

[Prior Art] Conventionally, for example, in a manufacturing process, in order to understand the flow of materials and information and to make the material procurement, production plan, or its progress appropriate, terminal devices are installed at necessary locations. Information read by this terminal device was sequentially sent to an information processing device for necessary management. In this case, a card called a token card was used to supply the necessary information to each terminal device.

For this card, a card with a predetermined size is prepared, and the planned drilling positions are determined, for example, in a matrix on the card.
The type of information, that is, the token, is specified by the combination of holes actually drilled.

For this reason, sensors are provided at portions corresponding to all planned drilling positions, and the presence or absence of holes is individually checked using the sensors.

The presence or absence of a hole is determined by the sensor output level when the hole is open,
The intermediate level of the sensor output level when there is no hole is defined as a threshold level, and when a signal greater than this threshold level is obtained from the sensor, it is determined that there is a hole.

[Problem to be solved by the invention] However, in such conventional devices, since the output level of the sensors varies, it is necessary to determine a threshold level that does not affect any of the sensors. Therefore, it was necessary to invest a considerable amount of man-hours in verification, and the work efficiency was poor.

[Means for Solving the Problems 1] In order to solve such problems, the present invention provides a first sensor that stores read data for each sensor when a punched token card is inserted into all the punched planned positions. A storage unit, a second storage unit that stores read data for each sensor when a token card with no holes punched anywhere at all is inserted in the planned punching position, and the stored data with holes and data with no holes. The sensor is equipped with a calculation unit that calculates a threshold level for each sensor.

[Action 1 Data for the case with holes and the case without holes are stored for every drilling position, and the threshold level for all drilling p fixed positions is calculated individually. As a result, a threshold level unique to each sensor is determined for each sensor.

A comparison with the actual imfIM is made at this threshold level.

[Implementation IN] FIG. 2 shows an example of a token card, and the token card 1 has holes 71 to 71 in 8 columns and 12 rows, for example, in the shape of a rix, p fixed positions 1. is determined, and tokens can be classified by type depending on which hole is drilled at a certain position. 1□ is a hole drilled at the planned punching position, and 13 is a notch to identify the front and back direction of this card, which is to prevent misreading when the token card is inserted in the opposite direction. It is.

This misreading prevention IF notch 13 comes into contact with a protrusion provided at the bottom of the reader when it is properly inserted into the reader, which will be described later. Therefore, unless card 1 is inserted correctly,
Card 1 cannot be inserted all the way to the bottom of the reader.

14 to 16 are frames for making necessary notes, etc., and 17
is an arrow indicating the direction of insertion of this card into the reader.

FIG. 3 is a side sectional view of the reader 2 into which the token card 1 is inserted to detect the presence or absence of a hole, and a light emitting element array 3 and a light receiving element array 4 are provided on both sides of the card.

In this embodiment, 96 light-emitting element arrays 3 and 96 light-receiving element arrays 4 are provided at intersections arranged in a matrix of 12 rows and 8 columns as shown in FIG. The light emitting element array 3 and the light receiving element array 4 are opposed to each other with the token card 1 in between, as shown in FIG. In the fifth section, 3 is a light emitting diode, 41 is a light receiving diode provided at a position to receive light from the light emitting diode 31, and 3□4□ is a light emitting diode 31. This is a transparent film to prevent the light receiving diode 4 from getting dirty, and this film can be easily replaced if it gets dirty. Reference numeral 33 and 43 are stainless steel plates with holes provided at the same positions as the light emitting diode 31 and the light receiving diode 4, and this stainless steel plate is designed to prevent the transparent film from being damaged. In this embodiment, 96 light emitting diodes and 96 light receiving diodes are provided, so 96 holes are provided in each of the stainless steel plates 33 and 43.

1st. IfA is a block diagram showing the overall configuration of a device that reads data from a token card, and includes a light emitting element array 3.
The light receiving element array 4 is connected to the control section 10.

When the token card is inserted into the reader 2 shown in FIG. 3, the switch 101 is turned on and the scanning section 02 starts operating. This scanning unit 1 (L+ supplies column signals to the column decoder 10□ via three column signal lines, and supplies row signals to the row decoder 104 via four row signal lines. Therefore, the column decoder 103 sequentially selects eight columns one by one as the column signal changes, and the row decoder 104 sequentially selects 12 rows one by one as the row signal changes. The light emitting diodes selected in the columns and rows are configured to emit light in sequence.Therefore, 96 light emitting diodes selected by the scanning unit 10□ sequentially emit light.

If the token card has a hole, the light emitted from the light emitting diode is received by the light receiving diode and sent to the A/D converter 10. supplied to Here, one electrode of the light receiving diodes of the light receiving element array 4 is connected in common, and the other electrode is also connected in common. The voltage generated between the electrodes is supplied to the A/D converter 105 and converted into a digital signal.

The signal generated by A/D converter 105 is supplied to switch 106. The signal level is high when it is a hole signal, and the signal level is low when it is a holeless signal, so the signal is separated by the switch 106 based on the signal and stored in the hole data storage section 107 or the no hole data storage section 108. It is now being supplied. On the other hand, an address signal indicating which light emitting diode is being scanned is supplied from the scanning section 102 to the data storage section 107 with holes and the data storage section 108 without holes.

At the time of factory shipment, data of a token card with holes punched at all punching positions and data of a token card with no holes punched anywhere are stored in respective storage sections. This is done by setting each storage section to the writing state by a method not shown, and then inserting a token card with holes in all the perforation positions into the reader, and the data corresponding to each hole is stored in the perforated data in sequence. The information is stored in the section 107. Next, when a token card without a hole is inserted into the reader, the output of the A/D converter 105 at that time is stored in the holeless data storage section 108.
is stored in Through the above scanning, data with holes and data without holes corresponding to the 96 holes are individually stored. At the time of shipment, the storage section is stored by a method not shown.
Set to read state.

When in use, a token card with holes punched at predetermined positions as shown in FIG. 2 is inserted into the reader.

At this time as well, when the switch 101 is turned on, the scanning unit 102 starts scanning, and the 96 light emitting diodes sequentially emit light, so that the areas of the token card with holes and the areas without holes are separated. In response to A/
D converter 10. Data is output sequentially from . This data is provided to comparator 109.

On the other hand, as described above, the scanning section 10□ outputs a signal indicating the address of the emitting light emitting diode, and the data storage section 107 with holes and the data storage section 1-08 without holes are output.
Since the data is read from the threshold level calculation unit 10. . is supplied to. Here, a threshold level corresponding to the output of the light receiving diode is calculated from the supplied data. This threshold level is the data with holes,
This is the sum of data without holes divided by half.

The calculated threshold level is supplied to the comparator 109, so the comparator compares the calculated threshold level for each light receiving diode with the actually measured data and determines whether there is a hole or not. It determines whether there is no hole or not, and generates an output signal corresponding to the determination result. This judgment is as follows, assuming that the data with holes is A, the data without holes is B, and the measured value is C.

If A+B, C, then there is a hole.If you do it like this, there will be a hole for each photodetector diode output,
Alternatively, since it is possible to determine whether there is a hole, even if the sensitivity of the light receiving diodes varies, there is no need to determine the threshold level in consideration of the outputs of other light receiving diodes, and the setting operation becomes simple.

It is also possible to make the #'J1 cut with or without holes as follows.

In this way, unstable data close to an intermediate state between five holes and no holes can be eliminated as an error.

[Effect of the invention 1 As explained above, the present invention stores data for the state with holes and the state without holes for each sensor, determines the threshold level for each sensor, and compares it with the actual measured value. Since the threshold level can be determined without correlation with other holes, stable detection can be achieved even if the sensitivity of the sensor varies.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of a token card, FIG. 3 is a diagram showing a beam beam, FIG. 4 is a diagram showing a diode array, and FIG. 5 is a diagram showing an example of a token card. FIG. 3 is a cross-sectional view showing details of the beamer. ■--Token card, 2... Leader, 3...
...Light emitting diode array, 4...Light receiving diode array, 10□...Scanning section, 1-07, J-O8.
...Storage section, 109-...Comparison! , 10□.・−・
-Threshold level calculation section.

Claims (1)

[Scope of Claim] A token card reading device that reads information on holes arbitrarily drilled at the planned drilling positions using a reading device provided with sensors in all parts of the token card corresponding to the plurality of planned drilling positions, comprising: A first storage section stores reading data for each sensor when a token card with holes drilled in all parts of the hole is inserted, and a token card with no holes drilled in any of the planned holes is inserted. a second storage unit that stores read data for each sensor when inserted; a calculation unit that calculates a threshold level for each sensor from the stored data with holes and data without holes; A token card reading device comprising a comparator that compares the threshold level with an actual value read from a token card actually used for each sensor.