KR100700709B1 - Communication method for touchless door lock system - Google Patents

Abstract

The present invention relates to a remote control unit of a non-operational door lock system and a communication method therefor, which simplify the configuration of the product by unifying the frequencies used in the remote control unit and the door unit by microwaves, thereby reducing the size of the device. It is about.

The method of the present invention transmits its RU ID to the door side unit when the remote control unit having a transceiver having a transmission part and a reception part receives a transmission signal containing a DU ID from the door side unit, and the door side unit. In the communication method by the remote control unit of the non-operational door lock system to determine whether to unlock the door lock based on a result of comparing the received RU ID with a pre-registered ID when receiving the RU ID, (a Maintaining the received part in a power-on state only for a predetermined first time t _{1 at} a predetermined second time period t ₂ ; (b) extending the power-on state to a predetermined fifth time t ₅ when a wireless signal from the outside is received during the wave-on state; and (c) in advance within the fifth time t ₅ . And when the DU ID of the predetermined door side unit is received, activating the transmitting part to transmit the RU ID, wherein 1/2 * t ₃ <t ₂ <t ₃ (where t ₃ is the door). The third time, which is the total time the side unit transmits the transmission signal continuously), and 2 * t ₄ <t ₅ <t ₃ (where t ₄ is the time required to transmit a single transmission signal in the door unit) It is characterized by that.

No operation, Door lock, Power, Battery, Encryption

Description

Communication method for non-operational door lock system {communication method for touchless door lock system}

1 is a schematic block diagram of a conventional non-operational door lock system;

2 is a schematic block diagram of a non-operational door lock system of the present invention;

3 is a schematic block diagram of a remote control unit in the non-operational door lock system of the present invention;

4 is a schematic block diagram of a door side unit in the non-operational door lock system of the present invention;

5 is a flowchart illustrating a communication method between the door side unit and the remote control unit in the non-operational door lock system of the present invention;

6A and 6B are diagrams illustrating the transmission signals of the door unit and the remote control unit, respectively;

7 is a timing chart between signals according to the communication method of the non-operational door lock system of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: remote control unit, 11: high frequency oscillator,

12: first MCU, 13: transmitting unit,

14: transmit antenna, 15: low frequency oscillator,

16: second MCU, 17: receiving unit,

18: receiving antenna,

DU: door unit, RU: remote control unit,

32, 42: clock oscillator, 34, 44: MCU,

36, 46: transceiver, 37, 47: variation / demodulation oscillator,

38, 48: antenna,

100: CPU, 102: key input unit,

104: ROM, 106: flash memory,

108: power supply unit, 110: transceiver,

112: antenna, 114: RAM,

120: CPU, 122: key input section,

124: ROM, 126: flash memory,

128: power supply unit, 130: auxiliary component,

132: door lock component, 134: human body detection,

136: transceiver, 138: antenna,

140: RAM

The present invention relates to a communication method of a non-operational door lock system, and more particularly, to a communication method of a non-operational door lock system that simplifies the configuration of the system and significantly improves power saving and security performance.

Recently, with the development of electronic / communication technology, various convenience facilities have been proposed. One of such convenience facilities is a non-operational door lock system.

A non-operational door lock system is used between a locking device (hereinafter simply referred to as a 'door lock') installed on a door of a home, company or vehicle and a wireless communication device (hereinafter simply referred to as a 'remote control') carried by a user. It refers to a system that automatically unlocks the door lock by communicating according to the access to the door lock.

In the non-operational door lock system, radio waves are periodically generated for the non-operational operation, and since the independent power source such as a battery is used as the power required for this operation, there is a problem in that the battery needs to be replaced frequently if the power consumption is not reduced. In view of this, various power saving methods have been proposed, and Utility Model Registration No. 297570 has been proposed as a representative example.

Figure 1 is a schematic block diagram of a non-operational door lock system according to the prior art described above. As shown in FIG. 1, the conventional non-operational door lock system is largely divided into a remote control unit 10 and a door side unit (not shown), and the remote control unit 10 is normally kept in a sleep state again. The second microcontroller 16, which is connected to the first microcontroller 12 and the first microcontroller 12 and repeats the sleep state and the wake-up state at predetermined cycles, receives radio waves from the door unit. The clock signal for the operating frequency is supplied to the radio wave receiving unit 17, the receiving antenna 18, and the radio wave transmitting unit 13, the transmitting antenna 14, and the first microcontroller 12, which are required to transmit the radio wave to the door unit. It may include a low frequency oscillator 15 for providing a clock signal for the operating frequency to the high frequency oscillator 11 and the second microcontroller 16 to provide.

In the prior art having the above-described configuration, the second microcontroller 16 of the remote control unit 10 repeats the sleep state and the wake-up state at predetermined time periods, and the first microcontroller 12 is normally in the sleep state. Then, the device enters the wakeup state only when a wakeup signal is applied from the second microcontroller 16. And while in the wake-up state, the second microcontroller 16 turns on the receiver 17. In this state, when a radio wave is received from the door unit indicating the presence of self, the signal is received. The second microcontroller 16 is delivered to the second microcontroller 16, and the second microcontroller 16 that receives the wakeup wakes up the first microcontroller 12. As described above, when the first microcontroller 12 is in the wake-up state, the remote controller unique ID registered in advance is transmitted to the radio wave after the transmitter 13 is turned on, and the remote unit uniquely receives the received remote controller ID. The door lock is switched from the locked state to the unlocked state when it matches with the registered one.

However, according to the prior art as described above, the remote control unit because the self-existing notification signal transmitted from the door unit is modulated in a long wave of hundreds [KHz] band, and the remote controller unique ID is modulated in a very high frequency of hundreds [MHz] band. Since the receiver and the transmitter must inevitably be separated, and therefore, each antenna and the modulator oscillator must be used in the transmitter and the receiver, the configuration of the apparatus is complicated and the size of the product increases. Furthermore, the possibility of malfunction due to the interference of unnecessary radiation caused by the operation of the electric machine increases due to the use of the long wave, and the composition of the product becomes more complicated when using multiple filters to prevent this. .

Furthermore, since the presence alarm signal transmitted from the door unit is a simple frequency signal, the remote control unit and the door unit are responded by transmitting in response to the fact that their remote controller does not need to respond, even in a common house such as a company or an apartment. There is a problem that the power consumption of all increases, and thus the battery is quickly depleted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the operation of the product is simplified by unifying the frequencies used in the remote control unit and the door unit in a very short wave, thereby reducing the size of the device. It is an object of the present invention to provide a remote control unit of the door lock system and a communication method thereby.

Another object of the present invention is to provide a unique ID to the door-side unit, thereby preventing unnecessary communication between the unmatched remote-control unit and the door-side unit, thereby reducing power consumption. The present invention provides a communication method.

The apparatus according to an aspect of the present invention for achieving the above object transmits its ID to the door side unit when the remote control unit receives a transmission signal emitted from the door side unit, and the door side unit transmits the ID. In the remote control unit of the non-operational door lock system configured to determine whether to unlock the door lock according to a result of comparing the received ID with a pre-registered ID when receiving, wherein the wireless signal including the ID of the door is applied to the door side. A single transceiver having a transmitting part for transmitting to the unit and a receiving part for receiving a radio signal from the door side unit; A single modulation / demodulation oscillator for providing a modulation / demodulation frequency signal for the radio signal to the transceiver; A single transmit / receive antenna connected to the transceiver that emits a radio signal containing its ID, and captures a radio signal from the door unit, and always activates the reception part at a predetermined time period for a predetermined time. And a single microcontroller for activating the transmission part to transmit a radio signal including its own ID when the radio signal from the door unit is received through the reception part.

The method according to another aspect of the present invention transmits its RU ID to the door side unit when the remote control unit having a transceiver having a transmission part and a reception part receives a transmission signal including a DU ID from the door side unit. When the door side unit receives the RU ID, the door side unit determines whether to unlock the door lock based on a result of comparing the received RU ID with a previously registered ID. A method comprising: (a) maintaining the reception part in a power-on state only for a predetermined first time (t ₁ ) at a predetermined second time (t ₂ ) period; (b) extending the power-on state to a predetermined fifth time t ₅ when a wireless signal from the outside is received during the wave-on state; and (c) in advance within the fifth time t ₅ . And when the DU ID of the predetermined door side unit is received, activating the transmitting part to transmit the RU ID, wherein 1/2 * t ₃ <t ₂ <t ₃ (where t ₃ is the door). The third time, which is the total time the side unit transmits the transmission signal continuously), and 2 * t ₄ <t ₅ <t ₃ (where t ₄ is the time required to transmit a single transmission signal in the door unit) It is characterized by that.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to various embodiments of the remote control unit and the communication method of the remote control unit of the present invention.

FIG. 2 is a schematic block diagram of the non-operational door lock system of the present invention, and shows only a schematic configuration related to wireless communication with the outside. As shown in Fig. 2, the schematic configuration of the non-operational door lock system of the present invention is roughly divided into a remote control unit 30 and a door side unit 40. The remote control unit 30 is again a single microcontroller 34 that oversees the overall operation of the unit, a single clock oscillator 32 that provides a clock signal for the operating frequency to the microcontroller 34, and the door side unit 40. Transceiver 36 responsible for transmitting / receiving, a single modulation / demodulation oscillator 37 providing a modulation / demodulation frequency signal to the transceiver 36, for example, a microwave signal of 2.4 [GHz], and a single It can be made by including a transmit / receive dual antenna 38. The door side unit 40 also has a single microcontroller 44 which oversees the overall operation of the unit, a single clock oscillator 42 which provides a clock signal for the operating frequency to the microcontroller 44, a remote control unit 30 and Transceiver 46, which is responsible for transmitting / receiving, a single modulated / demodulated oscillator 47 that provides a modulated / demodulated frequency signal to the transceiver 46, for example a microwave signal of 2.4 [GHz], and a single It may be made by including a transmit / receive antenna 48.

As described above, the remote control unit 30 and the door unit 40 of the present invention uses a radio frequency of a single frequency band, for example, a microwave of 2.4 [GHz] band in both the remote control unit 30 and the door-side unit 40, so that the remote control In both the unit 30 and the door-side unit 40, the transmitter and receiver can be replaced by a single transceiver 36, 46. Furthermore, only one antenna 38, 48, which is also a transmit / receive antenna, is used. Since the number of parts can be reduced, the size of the product can be reduced. Furthermore, because of the use of ultra-short waves, the interference caused by the unnecessary radiation propagation in the surroundings is reduced, thereby reducing the number of filters.

FIG. 3 is a schematic block diagram of a remote control unit in the non-operational door lock system of the present invention, and for convenience of description, reference numerals are different from those of FIG. 2. As shown in FIG. 3, the remote control unit RU used in the non-operational door lock system of the present invention is configured to supply operating power to the CPU 100 and the unit RU, which largely control the overall operation of the unit RU. The power supply unit 108, a key input unit 102 for selecting or setting various functions such as registering a unique ID of the unit RU (hereinafter, simply referred to as 'RU unique ID'), and an operation control program of the unit RU are built-in. ROM 104, RAM 114 used for temporarily storing various data generated during operation of the unit RU, the transceiver 110 and the transmitter / receiver combined antenna 112, and the door-side unit DU And a flash memory 106 that stably registers and stores important data such as a unique ID (hereinafter, simply referred to as a 'DU unique ID'). In the above configuration, the CPU 100, the ROM 104, and the RAM 114 may be implemented as one-chip microcontrollers.

4 is a schematic block diagram of a door side unit in the non-operational door lock system of the present invention, and for convenience of description, reference numerals are different from those of FIG. 2. As shown in FIG. 4, the door side unit DU used in the non-operational door lock system of the present invention supplies operation power to the CPU 120 and the unit DU, which largely control the overall operation of the unit DU. Generated during operation of the unit DU, the power supply unit 128, the key input unit 122 used to select or set various functions related to the operation of the door lock, the ROM 124 in which the operation control program of the unit DU is embedded, RAM 140 for temporarily storing various data to be stored, the transceiver 136 and a flash memory 126 for stably registering and storing important data such as a dual transmit / receive antenna 138 and an RU unique ID, and access of a human body It consists of a human body sensing unit 134 for detecting the various components necessary for driving the door lock, for example, a motor or a solenoid for locking or unlocking the door by electric force, various limit switches for detecting a locking or unlocking state. Degree Alarm by detecting the lock driving section 132 and a low voltage state, and may comprise a secondary part (130) made of a configuration such as shown by a city / audible to the current operating state.

In the above configuration, the CPU 120, the ROM 124, and the RAM 140 may be implemented as a one-chip microcontroller. The human body detecting unit 134 may be made of an infrared sensor or the like. Other detailed configurations are disclosed in 2002 Patent Application No. 42950, filed by the applicant, and further description thereof will be omitted.

5 is a flowchart illustrating a communication method between the door side unit and the remote control unit in the non-operational door lock system of the present invention, and is mainly performed by each of the CPUs 100 and 120. 7 is a timing chart according to the communication method of the non-operational door lock system of the present invention. It is noted that there is no proportional relationship between the magnitudes of time shown.

First, in FIG. 5, the upper part of the dotted line indicates a process of registering a unique ID between the door unit DU and the remote control unit RU, and the lower part of the door unit DU communicates with the remote control unit RU. To unlock the door. In detail, when the product is released, the remote controller unit RU is released with its own unique RU ID stored therein. In this state, the RU unique ID still functioning as a key in the door unit DU is still present. Since it is not registered, the remote control unit RU must transmit the RU unique ID to the door side unit DU (step S10) for registration. And this transmission can be performed by the user to operate the RU unique ID setting switch provided in the remote control unit (RU).

Next, the door side unit DU stores the RU unique ID received from the remote control unit RU in step S10 in an arbitrary address of the flash memory 126 and registers it (step S12). Subsequently, the door side unit DU transmits the DU unique ID to the remote controller unit RU in order to register it (step S14), together with the address information of the flash memory 126 storing the RU unique ID. Will be sent. The reason why the RU address information is transmitted together is shortened because it takes a lot of time for the door-side unit DU to check and check it when there are many RU unique IDs registered in one door-side unit DU. For sake. That is, the door-side unit DU needs to check and collate only the RU unique ID stored in the address received from the remote control unit RU in a communication process for unlocking the door in the future, so that processing time can be shortened.

Next, in step S16, the remote controller unit RU stores and registers address information in which the DU unique ID received in step S14 and its RU unique ID are stored in the flash memory 106 (S16). 6A is a block diagram of the transmission signal of the door unit DU, and includes a preamble of a predetermined number of bits, a DU unique ID, and a CRC code sequence for error checking. Is uniquely assigned to each door-side unit Du, even if it is a product of the same company. The amount of data can be about 100 bits.

In this way, in the state in which the pre-registration procedure is completed, the door unit DU determines whether the human body detection signal IR is input through the human body detection unit 134, and the human body detection signal IR is input (step S20). In this case, by activating the receiving part of the transceiver 136, the transmission signal of FIG. 6A including its DU unique ID is decoded for a predetermined third time (t ₃ ), for example, 400 [m]. It transmits to the remote control unit (RU) without placing it. Herein, assuming that the transmission speed is 1 [Mbps] and the amount of data of the transmission signal is about 100 [bit], the fourth time t ₄ , which is the transmission time of the single transmission signal transmitted from the door unit DU, is It becomes around 100 [㎲].

On the other hand, the remote control unit RU supplies power only to the reception part of the transceiver 110 for a predetermined first time t ₁ , for example, 10 [mW] in order to reduce power consumption. Power supply pattern to cut off (hereinafter referred to as 'power-off' state) for the remaining time after every second time (t ₂ ), for example, 200 [m]. Since the second time t ₂ is less than 1/2 of the third time t ₃ , the transceiver 110 of the remote controller unit RU may receive a transmission signal from the door side unit DU. It becomes the number. Furthermore, if any signal is received, the duration of the power-on state from that moment is extended by a predetermined fifth time t ₅ , for example 200 [m], so that a complete transmission immediately after power-on is achieved. Even if it does not receive a signal, it is possible to receive a complete transmission signal transmitted from the door unit (DU) to the next.

In this way, the remote control unit RU having received the complete transmission signal demodulates the transmission signal, extracts the DU unique ID, and compares it with the DU unique ID registered in step S16 (step S24) to determine whether or not it matches (step S26). )do. As a result of the determination in step S26, if it matches, the RU unique ID is transmitted. If the RU unique ID is used as it is, there is a risk of hacking. Therefore, it is preferable to use the converted ID which is converted at every communication. To do this, the same encryption algorithm (for example, a matrix determined by a random number) is stored in the door unit (DU) and the remote control unit (RU) at the time of product shipment, and the matrix information containing the matrix value to be used for conversion at each communication. Is generated by a random number generation method to perform the conversion, and the transmission part of the transceiver 110 is activated to transmit the converted ID (hereinafter referred to as RU conversion ID), the matrix information, and the address information. 6B is a block diagram illustrating the transmission signal of the remote controller unit RU, and may include a preamble, address information, RU conversion ID, matrix information, and CRC code for error checking. It can be made of a large amount of data, for example, 300 [bit] or more than the transmission signal. Assuming that the transmission speed of the transmission signal of the remote control unit RU is 1 [Mbps] and the data amount is 300 [bit], the seventh time (t ₇ ) is about 300 [ms] to transmit all the single transmission signals. It takes

On the other hand, the door side unit DU deactivates the receiving part of the transceiver 136 and activates the transmitting part only after the third time t ₃ has elapsed. Therefore, the signal transmission time and the door of the remote control unit RU A time shift may occur between the reception waiting times of the side unit DU. In consideration of this, the remote control unit RU transmits the transmission signal by a predetermined number n, for example, three times at a predetermined sixth time t ₆ , for example, 200 [m], and the door side unit ( In the DU, the receiving part of the transceiver 136 is maintained in an active state for a predetermined eighth time t ₈ , for example, 1 [s]. In this way, when a complete transmission signal from the remote control unit RU is received, the door side unit DU demodulates the transmission signal to extract matrix information, and encrypts the matrix value indicated by the extracted matrix information. The RU unique ID is restored by substituting the RU unique ID, and after extracting the RU unique ID registered in the address, the RU unique ID is compared with the restored RU unique ID to determine whether it matches (step S32). As a result of the determination in step S32, if there is a match, the door is immediately unlocked (step S36), and if it does not match, the door is unlocked (step S38).

On the other hand, if the result of the determination in step S26 does not match, no further action is taken, whereby power consumption in the remote control unit RU and the door side unit DU can be prevented.

The contents of the first time t ₁ to the eighth time t ₈ described above are summarized as follows.

First time t ₁ : the constant power-on holding time of the remote control unit receiving part,

Second time t ₂ : the regular power-on state repetition time period of the remote control unit receiving part,

Third time t ₃ : time at which the door unit continuously transmits a transmission signal including the DU unique ID,

Fourth time t ₄ : time required to transmit a single transmission signal in the door unit,

Fifth time t ₅ : power-on extension time of the remote control unit receiving part at the time of receiving any signal,

Sixth time t ₆ : time period during which the remote control unit repeatedly transmits the RU ID,

Seventh time t ₇ : time required for the remote control unit to transmit a transmission signal including a single RU ID,

Eighth time t ₈ : Waiting time for reception of the transmission part of the door side unit.

And the relationship between each time is summarized as the following equation.

1/2 * t ₃ <t ₂ <t ₃

2 * t ₄ <t ₅ <t ₃

t ₈ <n * t ₆ <t ₄ + t ₈ (where n ≥2)

The remote control unit and the communication method thereof of the non-operational door lock system of the present invention are not limited to the above-described embodiments and can be modified in various ways within the scope of the technical idea of the present invention. For example, the first to eighth time periods described above may be appropriately changed within a range in which an equal sign relation is satisfied.

According to the remote control unit of the non-operational door lock system of the present invention as described above and the communication method therewith, the configuration of the product is simplified by unifying the frequencies used in the remote control unit and the door unit to ultra-high frequency, and thus the size of the device. The effect that can reduce is exerted.

Furthermore, by giving a unique ID to the door side unit, unnecessary communication between the unmatched remote control unit and the door side unit can be prevented, thereby reducing the power consumption of the door side unit and the remote control unit.

Claims (6)

delete When the remote control unit having a transceiver having a transmitting part and a receiving part receives a transmission signal including a DU ID from the door side unit, it transmits its RU ID to the door side unit, and the door side unit sends the RU ID. In the case of receiving, in the communication method by the remote control unit of the non-operational door lock system to determine whether to unlock the door lock according to the result of comparing the received RU ID with the registered ID, (a) maintaining the reception part in a power-on state only for a predetermined first time t _{1 at} a predetermined second time period t ₂ ; (b) extending the power-on state to a predetermined fifth time t ₅ when a wireless signal from the outside is received during the wave-on state; and (c) activating the transmission part and transmitting the RU ID when a DU ID of a door-side unit is received within the fifth time t ₅ . 1/2 * t ₃ <t ₂ <t ₃ (where t ₃ is the third time that is the total time that the door unit continuously transmits the transmission signal), 2 * t ₄ < t ₅ < t ₃ (where t ₄ is the time required to transmit a single transmission signal from the door side unit). The method of claim 2, wherein the RU ID is repeatedly transmitted at least n (an integer of 2 or more) at a predetermined sixth time period t ₅ t ₈ < n * t ₆ < t ₄ + t ₈ (where t ₈ is the waiting time for receiving the RU ID of the door side unit). 4. The communication method according to claim 3, wherein in step (c), the RU ID is transmitted together with the address information in which the RU ID is stored. 5. The method according to claim 4, wherein the RU ID is a RU conversion ID obtained by converting an RU unique ID, which is equivalent to both the door side unit and the remote control unit, by an encryption key. And transmitting the read information for reading the encryption key together with the RU conversion ID in the step (c). 6. The DU ID according to any one of claims 2 and 5, wherein the DU ID is an ID uniquely assigned to only the door side unit, and is wirelessly transmitted from the door side unit to the remote control unit by communication in the registration process after the product is shipped. Become, And transmitting the RU ID only when the DU ID coincides with a pre-registered DU ID in the step (c).

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