KR20000074031A - Electronic door opening/closing system using RF key and control method thereof - Google Patents

Abstract

PURPOSE: There are provided a non-contact electronic door opening/shutting system using no battery radio frequency key through power induction and a method of controlling the system, wherein an RF key is supplied with power in the power induction manner instead of contacting manner for radiating an intrinsic ID frequency to the system to determine whether the ID frequency is in accordance with a registered ID to release a door lock, thereby improving the lifespan of the key and the system semi-permanently without the danger of copy of the key. CONSTITUTION: An electronic door opening/shutting system using no battery radio frequency key includes a transponder key(10) charging its operation power through power induction method from the system when accessing the system to transmit user ID data in radio, and a system main body(30) which is set on the inner side of a door, generates a radio frequency signal to allow the transponder key to be charged with its operation power in standby state, and judges if the user ID data received from the transponder key corresponds to one of registered IDs to switch door lock between closing and closing cancellation.

Description

Electronic door opening / closing system using RF key and control method

The present invention relates to an electronic door opening and closing system and a control method thereof, and more particularly, to a non-contact electronic door opening and closing system using a no battery radio frequency (RF) key using a power induction method and a control method thereof.

In general, the electronic door opening and closing system using the electronic key is classified according to whether the electronic key and the data communication are contact or non-contact.

The key pad method for determining whether the contact electronic key matches the registered password code by inputting the password code by the keypad without using a separate key, and the personal ID of the card magnetically on the card The magnetic card is classified into a magnetic card method for determining a user ID in the system by inserting a magnetic card into the system and a floating key method for using a key ring type without a battery as a floating contact with the system.

The key pad method is a keyless encryption code method does not have to worry about losing the key, but the password security is difficult, frequent breakdown of the button, has the disadvantage of being weak to foreign substances and malfunction in moisture. In addition, while the magnetic card method is inexpensive, it is easy to duplicate the key, weak to foreign matters, and may malfunction due to moisture, and the card data may be lost due to magnetic force, and the device has a short lifespan. Floating key method has the advantage of being difficult to duplicate the key, light weight and compact, but has the disadvantage that it is inconvenient to use, expensive and expensive, and may malfunction in foreign matter and moisture.

On the other hand, the contactless electronic key has a built-in battery, a remote control key method for performing communication using a radio frequency between the electronic key and the system. This method is very convenient to use because it can be operated wirelessly from a long distance, difficult password security, can cause problems due to radio interference, there is a problem that the battery must be embedded in the key.

As described above, in the case of the contact type, there is no need to embed a battery in the electronic key, so it is not inadvertently disabled.However, there is a disadvantage in that password security is difficult and malfunctions may occur due to foreign substances or moisture. Although it is convenient to use, it must have a built-in battery and increase the output of radio waves so that it can be used at a long distance.

Accordingly, the present invention has been made in view of the problems of the prior art, and its object is to provide operating power in a power-induced manner from the system when the No Battery radio frequency (RF) key is approached to the system. The present invention provides a non-contact electronic door opening / closing system and a control method thereof, in which a unique ID is launched at a radio frequency and the system receives the received ID to determine whether the registration ID matches the registration ID.

1 is a block circuit diagram of an electronic door opening and closing system according to the present invention;

Figure 2a is a front view showing a part appearing outside the door of the present invention,

Figure 2b is a front view showing a part shown inside the door of the present invention,

3 is a flow chart for explaining the opening and closing operation of the electronic door opening and closing system according to the present invention,

4 is a flowchart illustrating a new card registration operation of the electronic door opening and closing system according to the present invention;

5 is a flowchart illustrating a card deletion operation of the electronic door opening and closing system according to the present invention.

* Explanation of Signs of Major Parts of Drawings *

10; Transponder key 20; door

21; Contact window 30; System body

31; Housing 32; CPU

40; RF recognition section 44; Antenna coil

47; Solenoid driving circuit 50; Solenoid

In order to achieve the above object, the present invention is a transponder key for wirelessly transmitting user ID data by charging the operating power from the system in a power-induced manner when the system is close to, and is installed on the indoor side of the door and in a standby state When the transponder key generates a high frequency signal so that the operating power is charged by the power induction method, and determines whether the user's ID data received from the transponder key matches any of the registered ID lock the door lock It provides a non-contact / electronic door opening and closing system using a radio frequency key, characterized in that the system body for switching to the unlocked / unlocked state.

The main body of the system is installed on the indoor side of the door and generates a high frequency signal so that the transponder key can be charged with operating power in a power induction manner when in standby state, and recognizes a radio frequency for receiving a user ID from the transponder key. Means, ID memory means for storing the ID data of the registered user, door lock status determining means for determining the state of the door lock, and user ID data received from the transponder key match any of the registered IDs. And control means for generating a control signal for switching the state of the door lock to the previous state, and a door lock actuator for switching the door lock according to the control signal.

The system includes a door lock release switch for manually releasing the door lock, a door lock lock switch for manually locking the door lock, a melody selection switch for sequentially changing the melody played among a plurality of melodies stored each time the switch is operated; Set buzzer driver that emits melody when user registration is confirmed at the time of ID registration confirmation and buzzer sound when ID registration is not confirmed, and the waiting time before door lock is automatically locked in door lock automatic lock mode. It is preferable to further include a timer setting switch for.

The door lock state determining means may include a first sensor for detecting a locked state of the door lock, a second sensor for detecting a unlocked state of the door lock, and a third sensor for detecting a malfunction of the door lock.

The apparatus further includes an ID registration switch used to register the ID of the new user, and an ID delete switch for deleting all previously registered IDs.

The radio frequency recognition means includes an oscillation circuit for generating a high frequency oscillation signal, an amplification circuit for amplifying the oscillated high frequency signal, an antenna coil for transmitting an amplified RF signal located in a contact window, and a transformer through the antenna coil. And a receiving unit for receiving the user ID data resent from the fender key, removing the noise signal, and applying it to the control means.

According to another feature of the invention, in response to the user approaching the transponder key to the contact window of the door, the RF coil is induced between the antenna coil of the key and the antenna coil of the system which generates an RF magnetic field when in standby. Receiving the operating power of the key, transmitting the unique ID of the user stored in the memory through the antenna coil at a radio frequency when the operating power is charged to the key, and receiving the user ID detected by the antenna coil of the system. Determining whether one of the pre-registered ID matches, and if there is an ID matching the determination result, the current lock state of the door lock is determined, and if the door lock is in the locked state, the door lock is unlocked. Drive the door lock in a locked state when the door lock is in the unlocked state. Yonghan provides a non-contact / electronic door opening and closing control method.

As described above, in the present invention, when the battery-free radio frequency key is approached to the system, the RF key is supplied with operating power from the system in a power-induced manner to launch a unique ID frequency, and the system receives it to determine whether it matches the registration ID. It is convenient to use as it is a non-contact type that opens and closes the door lock, and the life of keys and equipment is semi-permanent.It is impossible to duplicate keys, so it is easy to maintain security, and the power induction method does not require batteries. The built-in chip prevents malfunction due to moisture.

(Example)

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Attached Figure 1 is a block circuit diagram of the electronic door opening and closing system according to the present invention, Figure 2a is a front view showing a part shown outside the door of the present invention, Figure 2b is a front view showing a part shown inside the door of the present invention.

As shown in FIG. 1, the electronic door opening and closing system according to the present invention includes a small transponder key 10 having a large ferroelectric semiconductor integrated circuit (IC) 3 embedded in the key body 1. And a system main body 30 attached to the rear surface of the door 20 to switch the door lock to the locked / unlocked state.

In the system of the present invention, a contact window 21 is provided on the front surface of the door 20 to make the key 10 close to each other, and the lock / unlock state of the door lock is displayed so that the user can determine the state of the system. Only a door lock status indicator (LED1) 36 consisting of a red LED is shown, and a power indicator (LED2) 37 consisting of a yellow LED indicating a power status.

In addition, the rear surface of the door 20 is equipped with a housing 31 of the system main body 30 for switching the door lock to the locked / unlocked state, and the lower front of the housing 31 is provided with a door lock during manual operation of the door lock. The door lock release switch (SW1) for manually releasing the lock, the door lock lock switch (SW2) for manually locking the door lock, and the melody generated when the user registers at the time of confirmation of ID registration are confirmed every time the switch is operated. Melody selection switch (SW3) that selects one of eight melodies in order that the melody played back is sequentially changed, ID registration switch (SW4) used to register a new user's ID, and all registered IDs. ID deletion switch (SW5) for erasing, and a sliding timer for setting the waiting time timer to 5 or 10 seconds before the door lock is automatically locked in the automatic lock mode of the door lock. Forward switch (SW6) is fitted to the outside.

On the other hand, the system main body 30 of the present invention employs a microprocessor (CPU) 32 to control the system, and the door lock release switch SW1 and the lock switch SW2 described above are provided on the input side of the CPU 32. In addition to the melody selection switch (SW3), new ID registration switch (SW4), all ID deletion switch (SW5), and timer setting switch (SW6), the door lock is locked and unlocked due to the locked and unlocked state of the door lock and malfunction of the door lock. Three photo couplers PC1-PC3 are connected for detecting the state of staying in the intermediate state.

The CPU 32 includes a first memory M1 in which a system control program is stored and a second memory M2 for temporarily storing data being processed, and for storing ID data of registered users. The third memory M3 is connected to the outside, and the battery BAT 34 and the UPS power supply 35 are connected in parallel as operating power.

In addition, the CPU 32 is provided with a clock generation circuit for supplying a reference clock pulse and a reset circuit required for reset in a well-known manner, but is not shown.

On the other hand, in addition to the door lock status indicator (LED1) 36 and the power display lamp (LED2) 37 described above, the output of the CPU 32 is issued when the user's ID registration is confirmed at the time of confirming the user's ID registration. The buzzer driver 38 for driving the buzzer 39 is connected to generate a buzzer sound when the melody or ID registration is not confirmed.

In addition, a pair of relay driving transistors TR1 and TR2 operated in opposite states to change the direction of the current flowing to the door lock driving solenoid 50 to switch the door lock to the locked or unlocked state at the output of the CPU 32. Are connected, and the collector outputs of the relay drive transistors TR1 and TR2 are applied to the pair of relays REL1 and REL2 48 and 49 at opposite levels. As a result, voltages of opposite polarities are applied to the outputs of the pair of relays 48 and 49, that is, to the inputs of the door lock driving solenoid 50, thereby switching the door lock to the locked or unlocked state.

That is, for example, when the high level signal H is applied to the first transistor TR1 from the CPU 32 and the low level signal L is applied to the second transistor TR2, the first transistor TR1 is applied. When turned on, the low level signal L is output to the output of the first relay 48, and the second transistor TR2 is turned off and the high level signal H is output to the output of the second relay 49. Therefore, the door lock drive solenoid 50 unlocks the door lock.

However, when the low level signal L is applied from the CPU 32 to the first transistor TR1 and the high level signal H is applied to the second transistor TR2, the first transistor TR1 is reversed. When turned off, the high level signal H is output to the output of the first relay 48, and the second transistor TR2 is turned on and the low level signal L is output to the output of the second relay 49. Therefore, the door lock driving solenoid 50 moves in the opposite direction to unlock the door lock. In the solenoid driving circuit 47, R1 and R2 are base resistors of transistors, and D1 and D2 are diodes.

On the other hand, the CPU 32 has an oscillation circuit 41 for oscillating a high frequency signal in accordance with a control signal applied from the CPU 32 in the standby state, and amplifies the oscillated high frequency signal and is located in the contact window 21. An amplifier circuit 42 for transmitting an RF (Radio Frequency) signal through the antenna coil 44 and 125khz user ID data retransmitted from the transponder key 10 received through the antenna coil 44 to receive noise The RF recognition unit 40 made up of the receiving unit 46 which is applied to the CPU 32 after removing the signal is connected. The capacitors 43 and 45 of the RF recognition unit 40 are for DC blocking.

The transponder key 10 includes a ferroelectric semiconductor integrated circuit (IC) 3 which transmits user unique ID data through the antenna coil 7 at a frequency of 125 kHz in response to application of power from the system inside the key body 1. It is built in. The integrated circuit (IC) 3 is the antenna coil 44 of the RF recognition unit 40 and the antenna coil 7 of the key 10 when the transponder key 10 is brought into proximity or contact with the contact window 21. In the meantime, the operating power necessary for driving the circuit is charged to the capacitor 5 by the RF induction magnetic field. The integrated circuit (IC) 3 is then activated by the voltage charged in the condenser 5 and transmits user ID data stored in the memory inside the IC to the RF recognition unit 40 of the system via the antenna coil 7. .

The transponder key 10 may be manufactured in a key ring type, ID card type, necklace type, etc. according to the use. In the case of a card type, the transponder key 10 may be used as an ID card by transferring a company logo or a user picture on the surface thereof.

Figure 3 is a flow chart for explaining the opening and closing operation of the electronic door opening and closing system according to the present invention, Figure 4 is a flow chart for explaining the new card (ID) registration operation of the electronic door opening and closing system according to the present invention, Figure 5 Is a flow chart for explaining the operation of deleting the card ID of the electronic door opening and closing system.

First, when the user approaches the transponder key 10 to the contact window 21 of the door 20 (S2), it is disposed on the rear of the contact window 21 to generate an RF magnetic field in the standby state (S1). The key 10 is supplied with operating power by RF electromagnetic induction between the antenna coil 44 and the antenna coil 7 of the key (S3). When the operating power is charged in the key 10, the IC 3 is activated, thereby transmitting the unique ID of the user stored in the memory through the antenna coil 7 at the frequency 125khz (S4).

Accordingly, the received signal received by the antenna coil 44 of the RF recognition unit 40 is signaled after removing noise from the receiving unit 46 is applied to the CPU 32 (S5). The CPU 32 determines whether the received user ID matches any one of the IDs previously registered in the third memory M3 33 (S6), and if there is an ID that matches the determination result, the buzzer driver 38 By operating), the user hears the melody for confirming that the inquiry ID is the registration ID (S7). However, if there is no ID corresponding to the third memory M3 as a result of the determination, the buzzer driving unit 38 is operated to give a buzzer sound to warn the user that the inquiry ID is not the registration ID (S13). Set the system to standby so that you can query.

If the inquiry ID is a registration ID, a confirmation melody is heard and at the same time the lock state of the current door lock is judged based on the signals input from the three photocouplers PC1-PC3 (S8), and if the door lock is in the locked state, the CPU 32 applies a high level signal H to the first transistor TR1 and a low level signal L to the second transistor TR2 so that the door lock driving solenoid 50 unlocks the door lock. The door lock status indicator (LED1) 36 is turned off (S10).

However, when the door lock is in the unlocked state as a result of the determination, the CPU 32 applies the low level signal L to the first transistor TR1 and the high level signal H to the second transistor TR2. The door lock driving solenoid 50 is driven to lock the door lock (S11), and then the door lock status indicators (LED1) 36 are turned on (S12).

That is, when the door lock is currently in the locked state, the door lock is unlocked according to the key contact, and when the door lock is in the unlocked state, the door lock is switched to the locked state according to the key contact.

After that, when the user opens and closes the door 20, after the time set by the preset timer setting switch SW6 has elapsed, the CPU 32 sets the first and second transistors to lock the state of the door lock. Drive.

In addition, when the user leaves the room from the outside to operate the manual unlocking switch (SW1) (S14), the door lock can be released (S9, S10), on the contrary by operating the manual lock switch (SW2) (S15) The door lock can be set in a locked state (S11, S12).

On the other hand, the new ID registration is as shown in Figure 4, the key 10 close to the contact window 21 to recognize the user ID to the system (S21), pressing the ID registration switch (SW4) new ID, that is, Registration of the key is completed (S23).

In addition, in order to delete all previously registered IDs, when ID deletion switch SW5 is pressed (S31), all the keys ID registered in the third memory M3 are deleted (S32). Therefore, when all IDs are deleted by pressing ID deletion switch SW5, IDs must be newly registered.

In the system of the present invention, three photo couplers PC1-PC3 can detect a state in which the door lock remains in the intermediate state of locking and unlocking due to the locked and released state of the door lock and the malfunction of the door lock. Therefore, when the relay driving circuit and the photocoupler PC3 are set to the operating state for a long time due to a malfunction of the door lock, the CPU 32 prevents damage to the circuit due to the overload of the first transistor TR1 and the first transistor. 2 Cut off the signal for transistor TR2.

In the above embodiment, three photo couplers are used to detect the state of the door lock, but other types of position sensors may be used, and a driving method of the solenoid may be modified in other manners well known to those skilled in the art. will be. It is also possible to modify the registration and deletion procedures of the new ID in other ways.

The present invention system can be operated in various ways in conjunction with a crime prevention and disaster prevention system based on convenience, stability and practicality. For example, by checking the ID of each key user in the system each time the key is used and processing the signal, the outsider's access control, employee attendance management, parking management, patrol management, restaurant management, production process management, logistics management, material management, It can be used for membership management, academic management, book loan management, membership management, and apartment unmanned security.

As described above, in the present invention, when the RF key is close to the system, the RF key is supplied with operating power from the system in a power-induced manner to launch a unique ID frequency, and the system receives the door lock by determining whether it matches the registration ID. It is convenient to use as it is a non-contact type that opens and closes the door, and the life of keys and equipment is semi-permanent.It is impossible to duplicate keys, so it is easy to maintain security.The key does not require batteries by the power induction method and does not cause malfunctions due to moisture. Will not.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

Claims (5)

A transponder key for wirelessly transmitting user ID data by receiving operating power from the system in a power-induced manner when approaching the system; It is installed on the indoor side of the door and generates a high frequency signal so that the transponder key can be charged with operating power in a power induction method when it is in a standby state, and the user's ID data received from the transponder key is associated with any one of registered IDs. Non-contact / electronic door opening and closing system using a radio frequency key, characterized in that the system main body is configured to switch the door lock to the locked / unlocked state by determining the match. The system of claim 1, wherein the system body is It is installed on the indoor side of the door to generate a high frequency signal so that the transponder key can be charged with the operating power in the power induction mode when it is in the standby state, and to generate the high frequency oscillation signal to receive the user ID from the transponder key. An oscillation circuit, an amplification circuit for amplifying the oscillated high frequency signal, an antenna coil for transmitting the amplified RF signal located in the contact window, and user ID data retransmitted from the transponder key through the antenna coil to receive a noise signal After removing the radio frequency recognition means consisting of a receiving unit for applying to the control means, ID memory means for storing ID data of a registered user; Door lock status determination means comprising a first sensor for detecting a locked state of the door lock, a second sensor for detecting a unlocked state of the door lock, and a third sensor for detecting a malfunction of the door lock; Control means for generating a control signal for switching the state of the door lock to the opposite state when the ID data of the user received from the transponder key matches any of the registered IDs; Non-contact / electronic door opening and closing system using a radio frequency key, characterized in that the door lock actuator for switching the door lock according to the control signal. The door lock release switch of claim 1, further comprising: a door lock release switch for manually releasing the door lock; A contactless / electronic door opening and closing system using a radio frequency key, further comprising a door lock locking switch for manually locking the door lock. The method according to claim 1 or 2, A melody selection switch in which a melody played out of a plurality of stored melodies is sequentially changed at each operation of the switch; A buzzer driving unit which emits a melody when the registration is confirmed at the time of confirming the ID registration of the user and generates a buzzer when the registration of the ID is not confirmed; And a timer setting switch for setting a waiting time before the door lock is automatically locked in the automatic lock mode of the door lock. The method according to claim 1 or 2, ID registration switch used when registering the ID of a new user, Non-contact / electronic door opening and closing system using a radio frequency key, characterized in that it further comprises an ID deletion switch for deleting all the registered ID.