JPH0544365A - Card key device - Google Patents

Abstract

PURPOSE:To facilitate the registration and erasion of a card key by providing first photo-interrupters for reading holes in a card key, and second photo- interrupters for determining the timing of reading. CONSTITUTION:A plurality of first photo-interrupters 13a through 13e are provided in a slot for receiving a card key 1, orthogonal to the direction of insertion of the card key 1, for reading holes in the card key 1. Further, a plurality of second photo-interrupters 14a though 14e are provided arrayed in the direction of insertion of the card key 1, for detecting one end part of the card key 1 so as to determine the timing of reading. Then, digital data from a card key 1 obtained in a reading part 10 are processed by a microcomputer. Unlocking is made in response to a collation with data stored in memory, and further, the registration and erasion of the card key 1 are carried out by storing and erasing data in and from the memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention optically and accurately reads the arrangement of holes from a card key in which information is recorded by the number of holes and the arrangement of the holes, and converts it into digital data, which is stored in a memory. If the card key with the number and arrangement of pre-registered holes is checked by checking the registered data, an unlock signal will be generated and the registration and deletion of the card key will be easy. It relates to the device.

[0002]

2. Description of the Related Art In an apartment house such as a condominium, a remote door unlocking device is installed at the entrance to secure the security of each resident.

The remote unlocking device installed on the door of the entrance checks the visitor who came to the entrance by an intercom or the like, and then each resident remotely operates the unlocking of the door from the living room side or The person himself / herself is configured to unlock the entrance door by the lock of the living room and enter.

In such a conventional automatic door locking,
Since the resident unlocks the front door with the room key, if the resident changes, the room key is replaced with a new one and the front door key is also changed. There is a problem that it requires a lot of cost and labor because it has to be done.

Therefore, in order to facilitate the change of the key of the living room when the resident is changed, the Japanese Patent Publication No. 59 is used.
As disclosed in Japanese Patent Publication No. 21417, as shown in FIG. 4, a card / key device mechanically operated by a perforated card 1 in which an identification code is represented by the number of a plurality of holes 2 and the arrangement of the holes 2 is known. ing.

[0006] Such a mechanically operating card / key device is installed in each room of an apartment house such as an apartment,
In addition, in the case where the entrance door is also unlocked, the number and the arrangement of the holes 2 in some areas 6 out of the number and the arrangement of the holes 2 formed in the card key 1 are spread over all the living rooms. In common, in the entrance unlocking device, only the common area 6 is read to perform the unlocking operation.

[0007]

In such a conventional entrance unlocking device, since the unlocking operation is performed by reading only the common area 6 of the card key 1, the amount of information that can be handled is small. In addition, even if some residents are replaced, it is not possible to prevent the resident from unlocking unless the holes in the common part of the card key are changed. In the end, there was a problem that the card keys of all rooms and the unlocking device at the entrance had to be changed.

[0008]

An elongated hole into which a card key in which information is recorded according to the number and arrangement of holes is inserted, a pair of guide grooves provided subsequent to the elongated hole, and an inside of the elongated hole. , A plurality of first photo interrupters arranged in a direction orthogonal to the insertion direction of the card key to read holes of the card key, and arranged in the insertion direction of the card key at the end of the card key. A reading unit having a plurality of second photo interrupters for detecting the unit and determining the reading timing is provided, and the digital data of the card key obtained by the reading unit is processed by the microcomputer. , You can unlock the card by checking it against the data stored in the memory, registering it by storing it in the memory, or deleting the data stored in the memory. The recording or erasure is obtained by tightening if easy.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1 with the front panel removed, an elongated hole (not shown) formed in the front panel into which the card key 1 is inserted, and a pair of guides following this hole. Grooves 12, 12 are provided and are arranged in a direction orthogonal to the insertion direction of the card key 1 on the inside of the entire surface panel, and a plurality of first photo-reading holes 2 for reading the card key 1 are formed.
Interrupters 13a to 13e and a plurality of second photo interrupters 14a to 14e arranged in the insertion direction of the card key 1 to detect the leading end 7 of the card key 1 to determine the reading timing. A reading unit 10 having

Each of these photo interrupters 13a-1
3e and 14a to 14e each have a light emitting diode 15 which emits a light beam toward the card key 1 and a phototransistor 16 which detects the reflected light from the card key 1, as shown in FIG. A so-called reflection type photo interrupter is suitable, and is configured so that the surface through which light rays enter and exit faces downward to avoid contamination.

The column of the first photo interrupters 13a to 13e reads the holes 2 formed in the card key 1 row by row. In the portion where the holes 2 are present, the light is emitted from the light emitting diode 15. The light rays transmitted through the hole 2 do not generate reflected light, but in the portion where the hole 2 does not exist, the light rays emitted from the light emitting diode 15 are reflected by the surface of the card key 1 to be reflected light. And enters the phototransistor 16.

The rows of the second photo interrupters 14a to 14e are the row with the hole 2 of the card key 1 and the hole 2 in the middle of the row.
Is directed to the non-existing portion 3 and determines the timing of reading the hole 2 of each row. When each row reaches directly below the first photo interrupters 13a to 13e, the card key 1 is read. The tips 7 are arranged so as to sequentially cross directly under the second photo interrupters 14a to 14e.

The phototransistor 16 of each of the first and second photo interrupters 13a to 13e and 14a to 14e.
In order to process the output of the above to generate an unlock signal and to perform registration and deregistration, it comprises a CPU 21, a memory 22 and a PIO 23 connected by an address bus and a data bus, as shown in FIG. It has a microcomputer.

First and second photo interrupters
Output terminals of the phototransistors 16 of 13a to 13e and 14a to 14e and two contacts 17 and 18 of the changeover switch 9.
Are connected to the input terminals of the PIO 23, respectively, and the drive circuit 4 for driving the unlocking solenoid 5 is connected to the output terminal of the PIO 23. The two contacts 17 and 18 of the changeover switch 9 are grounded via the resistor 8 and the movable piece is connected to the positive terminal of the power supply.

Next, a registration operation, a normal operation, and an erasing operation of the card / key device configured as described above will be described.

(Registration operation) After the changeover switch 9 is switched to the contact 17 side and the input "1" is applied to set the registration operation state, the card key 1 to be registered is set to the pair of guide grooves of the reading section 10. Insert along 12, 12. When the card key 1 is inserted all the way, the card key 1 is inserted in all the phototransistors 16 of the second photo interrupters 14a to 14e.
The reflected light from the surface of the
It is determined that the card key 1 has been fully inserted by being applied to the CPU 21 via the PIO 23.

Next, when the card key 1 is pulled out in the opposite direction, the outputs of the phototransistors 16 of the second photointerrupters 14a to 14e sequentially change from "1" to "0" from the back. Change.

Thus, the second photo interrupter
The output of the photo transistor 16 of 14a to 14e is "1" or more.
The moment when the card key 1 changes to 0 "is the moment when the tip portion 7 of the card key 1 sequentially crosses directly under the second photo interrupters 14a to 14e, and the hole 2 of each row of the card key 1
At the moment when it reaches directly below the first photo interrupters 13a to 13e, which coincides with the timing of reading the hole 2.

Output of each phototransistor 16 of the first photointerrupters 13a to 13e when the output of the phototransistor 16 of the second photointerrupter 14a changes from "1" to "0". Indicates the state of the hole 2 in the first row of the card key 1, and is stored in the first address of the memory 22. Similarly, each output of the photo transistor 16 of the photo interrupters 14b to 14e is "1".
The output of each phototransistor 16 of the first photointerrupters 13a to 13e when it changes to "0".
The data are sequentially stored at 22nd to 5th addresses.

In this way, when the holes 2 of all the rows have been read, the total output of the phototransistors 16 of the second photo interrupters 14a to 14e becomes "0". It is determined that the key 1 has been completely extracted, and for the data temporarily stored in the first to fifth addresses of the memory 22, the other five consecutive addresses of the memory 22 are searched, and the same data is found. Check if it is already registered.

If the same data has already been registered, the data temporarily stored in the first to fifth addresses of the memory 22 is erased and the processing ends, but if it is unregistered data Finds five consecutive free addresses and stores them.

(Normal operation) In normal use,
Set the normal operating state by neutralizing the movable piece of the change-over switch 16 and applying "0" to the two inputs of the PIO 23,
Waiting for key 1 to be inserted.

When the card key 1 is inserted and pulled out, the hole 2 of the card key 1 is carried out in the same manner as the registration operation.
Is temporarily stored in the memory 22 at the first to fifth addresses. Then, with respect to the stored data, another five consecutive addresses in the memory 22 are searched to check whether or not the same data is registered.

When the same data is registered in the memory 22, an output is generated to the drive circuit 4 via the PIO 23, the unlocking solenoid 5 is driven to perform the unlocking operation, and the processing is ended. .. However, if the same data is not registered in the memory 22, the process is terminated without generating an output to the drive circuit 4.

(Erase operation) Cards already registered
When erasing the key data, the movable piece of the changeover switch 9 is switched to the contact 18 side to apply the input "1" to set the erasing operation state, and then the card / key 1 to be erased is read by the reading unit 10 Insert and pull out.

When the card key 1 is inserted and pulled out, the data of the hole 2 of the card key 1 is temporarily stored in the first to fifth addresses of the memory 22 in the same manner as the registration operation. Then, for the stored data, another five consecutive addresses in the memory 22 are searched to check whether the same data is registered, and if the same data is found, the registered data is deleted. To do.

(Other Embodiments) In the embodiments described above, the setting of the registration operation and the erasing operation of the hole data of the card / key is selected by the changeover switch 9.
It is also possible to set using a card key with specific holes. Both hole data of the front and back of a specific card key are stored in the memory in advance, and when the specific card key is inserted face up, the hole data of the next card key inserted once Only allow you to register a specific card
When the key is inserted face down, the hole data of the card key to be inserted next may be erased only once.

Alternatively, three specific card keys for registration, normal use and erasure are prepared, and these three card keys are
Store key hole data in memory in advance and register the operating status by inserting any card key,
Usually, it may be configured to select one of the erasures.

In the embodiment described above, the hole 2 is read when the card key 1 is inserted and then withdrawn, but the second photo interrupter 14 is used.
The output of phototransistor 16 from a to 14e is "1" rather than "0"
When you read in time to change to
It can be read when the card key 1 is inserted.

The light emitting diode 15 of each photo interrupter does not need to be constantly lit, and means for detecting the insertion of the card key is provided so that it is lit only for a short time when the card key is inserted. You may comprise.

In the embodiment described above, the holes 2 of 5 rows and 5 columns are formed in the card key, but the number of holes and the number of rows that can be formed in one row may be arbitrarily determined. , If both are set to a large amount, the amount of information will increase and the safety can be improved. Further, the holes formed in one row do not necessarily have to be arranged in a straight line, but may be bent and arranged in a zigzag manner as shown in FIG.

[0032]

As described above, according to the card / key device of the present invention, the second photo interrupter is used.
Since the holes are read while the timing is adjusted by 14, the reading is accurate, and with the simple operation of the changeover switch and the insertion and removal of the card key, registration to allow unlocking with the card key is performed. ,
It is possible to extremely easily cancel registration for disabling unlocking with a card key for each card key.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a reading unit of a card / key device according to the present invention.

FIG. 2 is a block diagram showing a circuit that processes an output obtained by the reading unit shown in FIG.

FIG. 3 is a side view of a photo interrupter used in the apparatus of FIG.

4 is a plan view showing an example of a card key used in the device of FIG. 1. FIG.

5 is a plan view showing another example of a card key used in the device of FIG. 1. FIG.

[Explanation of symbols]

 1 Card Key 2 Hole 4 Drive Circuit 5 Solenoid 9 Changeover Switch 10 Reading Unit 13a-13e First Photo Interrupter 14a-14e Second Photo Interrupter 15 Light Emitting Diode 16 Photo Transistor 21 CPU 22 Memory 23 PIO

Claims (1)

[Claims] 1. An elongated hole into which a card key having information recorded according to the number and arrangement of holes is inserted, a guide groove of the card key provided subsequent to the elongated hole, and inside the elongated hole. , A plurality of first photo interrupters arranged in a direction orthogonal to the insertion direction of the card key to read the hole of the card key, and arranged in the insertion direction of the card key, A card / key device comprising: a reading unit including a plurality of second photo interrupters that detect the end of the key to determine the reading timing.