JP2729862B2 - Card carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card transfer device for transferring a card to a predetermined position in order to read and write data from and to an inserted card.

[0002]

2. Description of the Related Art Generally, a card reader device reads and writes magnetic data on a card inserted and conveyed, punches a balance as a guide, and prints a balance for confirmation. When performing punching, printing, and the like, it is necessary to convey the card to a predetermined position. Conventionally, the following three methods have been adopted as a method for performing such positioning. That is, as a first method, there is a method of applying a brake by cutting off a power supply line for driving a motor for transporting a card and stopping the motor. As a second method, there is a method in which the motor is reversed for a certain period of time to apply a brake. Further, as a third method, the motor is reversed and the motor speed is detected using a motor speed detection circuit, and when the motor speed becomes extremely low, the motor reversing operation is released and a brake is applied. is there.

[0003]

The first method for determining the card stop position in the prior art has the disadvantage that it takes time until the motor decelerates and that the stop position fluctuates significantly depending on the load on the motor. . Further, in the case of the second method, there is a problem that the card is transported in the reverse direction to the transport direction due to the reversal of the motor due to the variation of the motor itself and the load applied to the motor.
If the reversal time of the motor is set in consideration of this, it takes time until the motor decelerates, as in the first method. As a result, the stop position of the card fluctuates. Further, in the case of the third method, the optimum motor reversal time can be set by absorbing the influence of the variation of the motor and the load applied to the motor. However, similarly to the first and second methods, the variation of the motor and the Due to such a load, there is a problem that it is difficult to hold the stop position of the card at a fixed position.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems , the present invention provides a card conveying means for conveying a card by rotation output, and a clock pulse for generating a clock pulse corresponding to the number of rotations of the card conveying means. braking and generating means, for the first click <br/> locking pulse number and card conveying means corresponding to the distance between the a clock pulse counting means for counting the number of clock pulses, the insertion opening and eye position initiating braking Doi location and with presetting second click <br/> number lock pulses corresponding to the distance between the target position, the card is first and second clock transported from the insertion opening Based on pulse number
And inversion control means for inverting control card transfer means when it is determined to have reached the Hazuki braking position, and detecting means for detecting a low rotational output of the card conveying means after the inversion control, low card transfer means by the detection means in which rotational output is a means for very low-speed normal rotation control this card conveying means to the target position in accordance with a second number of clock pulses when it is detected.

[0005]

The card conveyed from the insertion slot has reached the braking position is determined by counting the number of clock pulses arriving, and in this case, the card conveying means is controlled to be inverted. Then, after the reversal control is performed, when the low rotation output of the card transporting means is detected by measuring, for example, the interval of the clock pulse, the card transporting means is controlled to the low-speed forward rotation to the target position.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an apparatus to which the card transport device of the present invention is applied. In the figure, 1 is a main control unit, 2 is a power supply unit, 3 is a reader / writer unit that carries an inserted card and reads and writes data to and from this card.
This is the S-232C signal. In the reader / writer unit 3, reference numeral 5 denotes a CPU for controlling the entire reader / writer unit 4, reference numeral 10 denotes an I / O unit, reference numeral 11 denotes a ROM, and reference numeral 12 denotes a ROM.
Denotes a RAM, 13 denotes a timer unit, and 14 denotes a timer control circuit. Reference numeral 20 denotes a sensor buffer, 21 denotes an optical processing unit, 22 denotes a motor control unit driving circuit, 23 denotes a shutter driving circuit, 24 denotes a punch driving circuit, 25 denotes a magnetic reproducing unit, and 26 denotes a magnetic reproducing unit.
Denotes a write circuit, and 27 denotes a thermal head pressing solenoid drive circuit. Further, 30 is a sensor, 31 is a bar code sensor, 32 is an encoder motor, 33 is a shutter solenoid, 34 is a punch solenoid, 35 is a magnetic head, 36 is a thermal head pressing solenoid, and 37 is a thermal head.

Next, the motor control unit drive circuit 22 in the reader / writer unit 3 configured as described above changes the speed of the motor 32 to a high speed and an extremely low speed (when a certain load or more is applied to the motor 32). In this case, two types of speed control (speed at which the rotation of the motor 32 is stopped immediately after the driving of the motor 32 is stopped) are possible, and a function of generating a clock pulse proportional to the rotation speed of the motor 32 is provided. I have. That is, as shown in FIG. 2, the motor control unit drive circuit 22 sends the above-described high-speed control signal a and the extremely low-speed control signal b to the motor 32 in accordance with an instruction from the CPU 5 to control the motor 32 at a high speed and an extremely low speed. At the same time, a forward rotation control signal c and an inversion control signal d are transmitted to control the rotation in the forward and reverse directions. On the other hand, the motor control unit drive circuit 22 is provided with a clock pulse generator (tach generator) 50 that receives a motor rotation signal e from the motor 32 and generates a fixed amount of clock pulses. It generates a fixed amount of clock pulses in proportion. When the clock pulses from the clock pulse generator 50 are counted by the pulse counting unit 51 in the CPU 5, the number of rotations of the motor is proportional to the transport distance of the card, and the transport distance of the card corresponding to one clock pulse is obtained. Is known, the transport distance of the card can be accurately calculated from the count value of the pulse counting section 51 described above.

Next, FIGS. 4 to 6 are timing charts showing an example of a control method of the motor 32. FIG. 4 to 6, (a) is a forward signal, (b) is an inverted signal, and (c)
Indicates a high-speed signal, (d) indicates an extremely low-speed signal, (e) indicates a clock pulse signal, and (1) to (14) indicate clock pulse numbers. In section (a), the motor is rotated forward to convey the card.In section (b), the motor is reversed and the brake is applied.In section (c), the motor is rotated forward at an extremely low speed, and the section (c) is rotated. D) The card is stopped at the target position. FIG. 4 shows an example in which the motor torque and the load applied to the motor are of a normal magnitude. FIG. 5 shows that the time of the section (b) is extended when the motor torque is weak or the motor load is small. An example is shown. FIG. 6 shows an example in which the time of the section (b) is shortened when the torque of the motor is high or the load on the motor is large. As can be seen from the examples shown in FIGS. 4 to 6, the time of the section (b) which fluctuates according to the magnitude of the torque or the magnitude of the load is absorbed in the section (c). Then, the transport distance of the card,
That is, when all the clock pulses have the same value (14 pulses in the present embodiment), the motor stops and the card stops accurately at the target position.

Next, the CPU of such a card transport device
The operation of No. 5 will be described based on the flowchart of FIG.
First, in step 100, the number X of clock pulses for stopping the card at the target position is set in the first register (in the example of FIGS. 4 to 6, the time indicated by the clock pulse number (14), ie, X = 14). Next, step 1
01, the maximum brake application clock pulse number Y is set to the second
(In the example of FIGS. 4 to 6, the number of clocks indicated by clock pulse numbers (9) to (14), ie, Y
= 6). Subsequently, in step 102, the number of motor braking start clock pulses, that is, XY-α = Z, is set in the third register (here, α may be “0” when the value of Y is large. 4 to 6, the clock pulse number
(8), ie, Z = 8).

Thereafter, the card inserted from the insertion slot is conveyed by rotating the motor forward in step 103,
In step 104, the arrival of the clock pulse is determined. When the clock pulse arrives, the number of motor drive start clock pulses Z is decremented by one in step 105, and it is determined in step 106 whether or not Z is equal to “0”. And the arrival of the clock pulse is determined again. If Z becomes “0” and “Y” is determined in step 106, step 107
To reverse the motor. Due to the reversing operation of the motor, the transporting operation of the card is braked, and the card is transported at a low speed.

In step 108, the arrival of a clock pulse arriving from the motor whose reversal is controlled is determined. When the clock pulse arrives, in step 109, the maximum brake application clock pulse number Y is decremented by one.
In step 110, the pulse interval is detected to check the card transport speed. If the pulse interval is short and the card transport speed is determined to be high, the process returns to step 108 while maintaining the motor reversal control, and the arrival of the clock pulse is determined again. If so, the motor is rotated forward in step 112, the card is transported at an extremely low speed in step 113, and the arrival of a clock pulse is determined in step 114. Then, when the clock pulse arrives, step 114 is executed.
Is determined to be "Y", the maximum brake application clock pulse number Y is decremented by one in step 115, and it is determined in step 116 whether or not the value of Y is "0". In the case of, the flow returns to step 114 to judge the arrival of the clock pulse again, but when the value of the maximum number of clock pulses for applying brake Y becomes “0”, it means that the card has been conveyed to the target stop position. In step 117, the motor is stopped and the process ends.

As described above, when it is determined from the count value of the number of clock pulses that the card conveyed from the insertion slot has reached the braking position, the motor 32 is reversely controlled. After the reversal control is performed, the motor 32
If the low-speed output of the card is detected, for example, by measuring the clock pulse interval, the motor is controlled to rotate forward at low speed until the card reaches the target position, and it is determined by the count value of the number of clock pulses that the card has reached the target position. Then, the motor 3
Stop 2

[0013]

As described above, according to the present invention, when the card conveyed from the insertion slot reaches the braking position, the card conveying means is controlled to be reversed, and after the reversal control, the card conveying means is rotated at a low speed. When the output is detected, the card conveying means is controlled to perform low-speed normal rotation to the target position, so that the card can be accurately stopped at the target position where card data can be read and written.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a device to which a card transport device of the present invention is applied.

FIG. 2 is a functional configuration diagram illustrating a functional operation in the card transport device.

FIG. 3 is a flowchart illustrating the operation of the card transport device.

FIG. 4 is a timing chart in the case where the magnitude of the motor torque or its transport load indicates a normal magnitude.

FIG. 5 is a timing chart when the magnitude of the motor torque or its transport load is small.

FIG. 6 is a timing chart when the magnitude of the motor torque or the transport load thereof is large.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main control part 3 Reader / writer unit 5 CPU 13 Timer part 22 Motor control part drive circuit 32 Encoder motor 50 Clock pulse generator 51 Pulse count part a High speed control signal b Very low speed control signal c Forward rotation control signal d Inversion control signal e Motor rotation signal

Claims (1)

(57) [Claims] 1. A card transport device for transporting and stopping a card inserted from an insertion slot to a predetermined target position, comprising: card transport means for transporting the card by rotation output; A clock pulse generating means for generating a clock pulse corresponding to the number of rotations; and a clock pulse counting means for counting the number of clock pulses, wherein a first clock corresponding to a distance between the insertion port and the target position is provided. br /> Kuparusu number and a second corresponding to the distance between the target position and the braking Doi location to start braking to said card conveyor means
The number of clock pulses is set in advance, and the card conveyed from the insertion slot is used for the first and second clocks.
It is determined that the braking position has been reached based on the number of shock pulses.
A reversing control means for controlling the reversing of the card conveying means when the reversing control is performed; a detecting means for detecting a low rotation output of the card conveying means after the reversing control; and a detecting means for detecting a low rotation output of the card conveying means. Sometimes the second black
And a means for controlling the card conveying means to rotate at extremely low speed to the target position in accordance with the number of clock pulses .