Rotation positioning and transmission limit judgment reading device for certificate storage equipment

Abstract

The present invention relates to the field of data reading, and is a rotation positioning and transmission limit judgment and reading device for certificate storage equipment, which solves the problem in the prior art that the motor is powered off or the motor is mistakenly triggered to rotate, resulting in position changes, thereby affecting the data reading performance. The present invention includes an encoder disk, a circular storage disk and a single-chip microcomputer; the encoder disk includes an absolute encoder disk and an incremental encoder disk, and the encoder disk is arranged in a concentric circle; the circular storage disk rotates in unison with the outer ring incremental encoder disk, and the encoder disk does not rotate with the outer ring incremental encoder disk. The present invention combines the technical advantages of absolute value servo motors and incremental stepper motors with optical coupling switches, and determines the storage slot position through the algorithm of the single-chip microcomputer, avoiding the problem of data reading performance caused by power failure or mistaken triggering of motor rotation during operation; through the effective cooperation of optical sensors, certificate push, and circular storage disk drive, accurate transmission and effective limit of certificates are completed.

Description

Technical Field

[0001] The invention relates to the field of data reading, in particular to a rotation positioning and transmission limit determination reading device for a certificate storage device. Background Art

[0002] In the document storage device, when the document enters the storage device, the motor drives the storage disk to rotate. How to locate the storage position so that the document can be smoothly entered or taken out of the storage slot? The existing absolute servo motor and incremental stepper motor can realize the positioning function by using angle subdivision positioning technology. The motor rotates 360 degrees to subdivide the angle value of each storage slot. For example: the document storage slot has 100 storage slots, and the motor subdivides 360° / 100 slots = 3.6°. It determines how many turns the motor rotates to achieve positioning. Power failure during motor operation or false triggering of motor rotation and electromagnetic interference will cause position changes.

[0003] In the existing technology, the position limiter uses a limiter and an infrared diffuse reflection sensor to give feedback signals through close distance or physical impact. However, the ID card is too small, which will cause the sensor to fail and the document transmission to fail. When the document transmission device transmits the document to the disc storage card slot, it cannot determine the accurate transmission position, which will cause the transmission device gear to be overloaded and severely worn, affecting the practical life.

[0004] There is an urgent need for a new type of data reading device for a certificate storage device that can solve the above problems. Summary of the invention

[0005] The device for rotation positioning and transmission limit judgment and reading of a certificate storage device proposed in the present invention solves the problem in the prior art that the motor is powered off or the motor is mistakenly triggered to rotate, resulting in position changes and electromagnetic interference, thereby affecting the data reading performance.

[0006] The technical solution of the present invention is implemented as follows: a rotation positioning and transmission limit judgment reading device for a certificate storage device includes an encoder disk, a slot-type optical coupling combination for reading data, a circular storage disk for storing certificates, a certificate conveying device for feeding certificates into the circular storage disk, and a circular storage disk driving device for driving the circular storage disk, and also includes a single-chip microcomputer, the single-chip microcomputer is respectively connected to the slot-type optical coupling combination, the certificate conveying device and the circular storage disk driving device; the encoder disk includes an absolute encoder disk and an incremental encoder disk, and the encoder disks are arranged in concentric circles; the incremental encoder disk is arranged on the outer ring; the absolute encoder disk is arranged on the inner ring, and the slot-type optical coupling combination is arranged across the inner ring and the outer ring; the encoder disk is arranged directly below the circular storage disk; the outer ring is provided with segments, the segments are aligned with the slots of the certificate storage disk, and the circular storage disk driving device is mechanically connected to the circular storage disk; the circular storage disk rotates in unison with the outer ring incremental encoder disk, and the encoder disk does not rotate with the outer ring incremental encoder disk.

[0007] The slot-type optical coupler combination includes a judgment optical coupler switch for judging the absolute zero position, two A-phase optical coupler switches and B-phase optical coupler switches for counting and judging the rotation direction of the code disk; the judgment optical coupler switch, the A-phase optical coupler switch 2 and the B-phase optical coupler switch are grooves; the judgment optical coupler switch is placed under the inner ring absolute encoder disk segment; the A-phase optical coupler switch and the B-phase optical coupler switch are respectively placed under the outer ring incremental encoder disk segment; the A-phase optical coupler switch and the B-phase optical coupler switch generate a 90° phase difference; The circular storage disk includes a central hole passing through the middle, and also includes a slot with a vertical line of the center of the circle as the axis, and the slot includes two isosceles triangular prism accommodating spaces for storing documents.

[0008] Preferably, the encoder disk is arranged on one side of the circular storage disk, and an annular light-transmitting hole smaller than the center hole is also arranged on the disk; a light sensor for collecting light changes in the annular light-transmitting hole is also arranged on the side of the encoder disk away from the circular storage disk; the document conveying device is arranged on the other side of the circular storage disk, including a document conveying channel for inserting and pushing the document into the clamping part and a light source arranged at the upper end of the clamping part; the light sensor is used to collect light changes in the annular light-transmitting hole to determine whether the document is sent into the storage slot. When the document is sent into the storage slot, the light source from the upper end of the clamping part is blocked by the document, and the light sensor cannot collect light, so it can be determined that the document is sent into the slot, and the collected information is transmitted to the single-chip microcomputer; the light sensor and the circular storage disk drive device are communicated and connected to the single-chip microcomputer.

[0009] The photosensitive device of the slot-type optocoupler is arranged on the side wall of the groove, and the slot-type optocoupler is triggered to output a high-level detection signal by shielding; the detection signal output end is electrically connected to the set signal receiving end on the circuit board.

[0010] The document storage device rotation positioning and transmission limit judgment and reading device disclosed in the present invention combines the technical advantages of absolute value servo motor and incremental stepper motor, and designs the coding disk under the document storage disk to adopt internal and external hybrid encoder, which is divided into outer ring and inner ring, the outer ring uses incremental encoder disk, and the inner ring uses absolute value encoder; each segment of the outer ring is aligned with the document storage disk slot. The inner ring incremental code disk is installed with an optical coupler switch, and the outer ring absolute code disk is installed with two photoelectric optical coupler switches. The length of each segment of the code disk is different. When the storage disk rotates, the code disk segment passes through the optical coupler switch, and the optical coupler switch records the time of each segment. The storage slot position is judged by the algorithm of the single-chip microcomputer, so as to avoid the problem of position change caused by power failure or false triggering of motor rotation during operation, thereby affecting the data reading performance; by connecting the single-chip microcomputer, the optical sensor, document push, and circular storage disk drive are effectively coordinated to complete the accurate transmission and effective limit of the document. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 : Schematic diagram of the structure of the present invention; Figure 2 : A schematic diagram of the structure of the slot-type optical coupler assembly in the present invention; Figure 3 : A schematic diagram of the structure of the document storage disk in the present invention; Figure 4 : Schematic diagram of level signals of the A-phase optical coupler switch and the B-phase optical coupler switch in different directions in the present invention; Figure 5 : A schematic diagram of the structure of one side of the encoder disk of the present invention; Figure 6 : Internal circuit diagram of slot-type optocoupler; Figure 7 : Front view of slot type optocoupler; Figure 8 : Cross-sectional view of slot type optocoupler; Fig. 9 : Bottom view of slot type optocoupler; Fig.10 : A structural schematic diagram of the present invention from another angle; Fig.11 : Schematic diagram of zero point judgment; Wherein: 1. circular storage disk; 2. slot-type optocoupler combination; 2.1. judgment optocoupler switch; 2.2. A-phase optocoupler switch; 2.3. B-phase optocoupler switch; 3. groove; 4. certificate transmission device; 5. circular storage disk drive device; 6. absolute encoder disk; 7. incremental encoder disk; 8. light source; 9. optical sensor; 10. certificate; 11. certificate transmission channel; 12. clamping part; 13. slot; 14. center hole; 15. annular light-transmitting hole. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] The device for rotating positioning and determining transmission limit of a certificate storage device disclosed in the present invention comprises an encoder disk, a slot-type optical coupling assembly 2 for reading data, a circular storage disk 1 for storing a certificate 10, a certificate conveying device 4 for feeding the certificate 10 into the circular storage disk 1, and a circular storage disk driving device 5 for driving the circular storage disk. The device also comprises a single-chip microcomputer, which is respectively connected to the signal of the slot-type optical coupling assembly 2, the certificate conveying device 4 and the circular storage disk driving device 5; the encoder disk comprises an absolute encoder disk 6 and an incremental encoder disk 7, and the encoder disk is designed as an integral whole with the certificate storage disk; The encoder disks are arranged in concentric circles; the incremental encoder disk 7 is arranged on the outer ring; the absolute encoder disk 6 is arranged on the inner ring, and the index item is used to determine the absolute zero position; the slot-type optical coupling assembly 2 is arranged across the inner ring and the lower part of the outer ring, and is used to simultaneously collect information of the absolute encoder disk 6 and the incremental encoder disk 7; the encoder disk is arranged directly below the circular storage disk 1, and the outer ring is provided with segments, and the segments are aligned with the document storage disk slots 13, and the circular storage disk drive device 5 is mechanically connected to the circular storage disk 1; the circular storage disk 1 and the outer ring incremental encoder disk 7 rotate in unison; Fig.11 As shown, the minimum gap edge of the absolute encoder disk 6 forms a center line with the node of the incremental encoder disk 7 and the document storage slot 13, which is the zero point.

[0015] The slot type optocoupler combination 2 comprises a judgment optocoupler switch 2.1 for judging the absolute zero position, two A-phase optocoupler switches 2.2 and B-phase optocoupler switches 2.3 for counting and judging the rotation direction of the code disk; the judgment optocoupler switch 2.1, the A-phase optocoupler switch 2.2 and the B-phase optocoupler switch 2.3 are grooves 3; the judgment optocoupler switch 2.1 is arranged below the inner ring absolute encoder disk 6 segment; the A-phase optocoupler switch 2.2 and the B-phase optocoupler switch 2.3 are respectively arranged across below the outer ring incremental encoder disk 7 segment; when the motor controls the code disk to rotate, the A-phase optocoupler switch 2.2 and the B-phase optocoupler switch 2.3 produce a 90° phase difference, which can judge the rotation direction of the motor. The length of each segment of the code disk is different. When the circular storage disk 1 rotates, the optocoupler switch passes through the segment leakage position, and the time of each segment is recorded through the single-chip microcomputer data algorithm to judge the position of the storage slot 13, and the number of reads is recorded; The inner circle is used to judge the absolute zero position by using the optical coupler switch 2.1. The inner circle is divided into several small sections, each of which corresponds to several yardsticks on the outer circle. The time it takes to pass through groove 3 can be used to judge the current value range. The groove 3 with the smallest time is used to judge the zero point position. In this way, a zero point position can be set for the code disk to facilitate outer circle counting.

[0016] The circular storage disk 1 includes a central hole 14 passing through the middle, and also includes a slot 13 with a vertical line of the center of the circle as the axis. The slot 13 includes two isosceles triangular prism accommodating spaces for storing documents, which are used for placing documents.

[0017] Preferably, the encoder disk is arranged on one side of the circular storage disk 1, and an annular light-transmitting hole 15 smaller than the center hole 14 is also arranged on the disk; the encoder disk is also provided with a light sensor 9 for collecting light changes in the annular light-transmitting hole 15 on the side away from the circular storage disk; the document conveying device 4 is arranged on the other side of the circular storage disk 1, including a document conveying channel 11 for inserting and pushing the document 10 into the clamping part 12 and a light source 8 arranged at the upper end of the clamping part 12; the light sensor 9 and the circular storage disk drive device 5 are communicated and connected to the single-chip microcomputer. The light sensor 9 is used to collect the light changes of the annular light-transmitting hole 15 to determine whether the document is sent into the storage slot. When the document is sent into the storage slot, the light source 8 from the upper end of the clamping part 12 is blocked by the document 10, and the light sensor 9 cannot collect light, so it can be determined that the document 10 is sent into the slot, and the collected information is transmitted to the single-chip microcomputer; utilizing the shading effect, the light sensor 9 is used to receive the top light source 8, and the light source 8 passes through the annular light-transmitting hole 15 of the circular storage disk 1. When the document 10 is delivered to the position, the document 10 just blocks the top light source 8, and the light sensor 9 cannot receive the light source 8. The signal of the single-chip microcomputer determines it to be a switch state of 0 or 1, and the single-chip microcomputer gives the motor of the circular storage disk drive device 5 an instruction to stop or continue to rotate.

[0018] The photosensitive device of the slot-type optocoupler is arranged on the side wall of the groove 3, and the slot-type optocoupler is triggered to output a high-level detection signal by blocking; the detection signal output end is electrically connected to the set signal receiving end on the circuit board.

[0019] Slot-type photocoupler is an optical switch, also known as photocoupler switch or photoelectric eye transmission sensor. It triggers signal changes through occlusion and is used to record changes in position and quantity; The document storage device rotation positioning and transmission limit judgment and reading device disclosed in the present invention combines the technical advantages of absolute value servo motor and incremental stepper motor, and the coding disk designed under the circular storage disk 1 of the document adopts an internal and external hybrid encoder, which is divided into an outer ring and an inner ring, and the outer ring uses an incremental encoder disk 7, and the inner ring uses an absolute value encoder; each segment of the outer ring is aligned with the document storage disk slot 13. The inner ring incremental code disk is installed with an optical coupling switch, and the outer ring absolute code disk is installed with two photoelectric optical coupling switches. The length of each segment of the code disk is different. When the storage disk rotates, the code disk segment passes through the optical coupling switch, and the optical coupling switch records the time of each segment. The position of the storage slot 13 is judged by the algorithm of the single-chip microcomputer, so as to avoid the problem of position change caused by power failure or erroneous triggering of the motor rotation during operation, thereby affecting the data reading performance; by connecting the single-chip microcomputer, the optical sensor 9, the document 10 push, and the circular storage disk 1 drive are effectively coordinated to complete the accurate transmission and effective limit of the document 10.

[0020] Of course, without departing from the spirit and essence of the invention, technicians familiar with the field should be able to make various corresponding changes and modifications based on the invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the invention.

Claims

1. A rotation positioning and transmission limit determination and reading device for a certificate storage device, characterized in that: It includes an encoder disk, a slot-type optical coupler assembly for reading data, and a circular storage disk for storing documents, and the slot-type optical coupler assembly, the document transmission device, and the circular storage disk drive device are respectively connected; The encoder discs include an absolute encoder disc and an incremental encoder disc, and the encoder discs are arranged in concentric circles; the incremental encoder disc is arranged on the outer circle; and the absolute encoder disc is arranged on the inner circle; The slot-type optical coupling assembly is arranged across the inner ring and the lower part of the outer ring, and is used to simultaneously collect information of the absolute encoder disk and the incremental encoder disk; the encoder disk is arranged directly below the circular storage disk; the outer ring is provided with segments, and the segments are aligned with the slots of the certificate storage disk; The circular storage disk drive device is mechanically connected to the circular storage disk; the circular storage disk rotates in unison with the outer ring incremental encoder disk.

2. The rotation positioning and transmission limit determination and reading device for a certificate storage device according to claim 1, characterized in that: The slot-type optical coupler combination includes a judgment optical coupler switch for judging the absolute zero position, and two A-phase optical coupler switches and B-phase optical coupler switches for counting and judging the rotation direction of the code disk; The optical coupler switch, the second optical coupler switch of phase A and the optical coupler switch of phase B are judged to be grooves; The judgment optocoupler switch is placed under the inner ring absolute encoder disk segment; the A-phase optocoupler switch and the B-phase optocoupler switch are respectively placed under the outer ring incremental encoder disk segment; the A-phase optocoupler switch and the B-phase optocoupler switch produce a 90° phase difference.

3. The rotation positioning and transmission limit determination and reading device for a certificate storage device according to claim 2, characterized in that: The circular storage disk includes a central hole passing through the middle, and also includes a slot with a vertical line of the central hole as an axis, and the slot includes two isosceles triangular prism accommodating spaces for storing documents.

4. The rotation positioning and transmission limit determination and reading device for a certificate storage device according to claim 3, characterized in that: The encoder disk is arranged on one side of the circular storage disk, and an annular light-transmitting hole smaller than the central hole is also arranged on the disk. A light sensor for collecting light changes in the annular light-transmitting hole is also arranged on the side of the encoder disk away from the circular storage disk; The document conveying device is arranged on the other side of the circular storage disk, and includes a document conveying channel for inserting and pushing the document into the clamping part and a light source arranged on the upper end of the clamping part; The optical sensor and the circular storage disk drive device are communicatively connected to the single chip microcomputer.

5. The rotation positioning and transmission limit determination and reading device for a certificate storage device according to claim 4, characterized in that: The photosensitive device of the slot-type optocoupler is arranged on the side wall of the groove, and the slot-type optocoupler is triggered to output a high-level detection signal by blocking; the detection signal output end is electrically connected to the setting signal receiving end on the single-chip microcomputer.

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