KR20210156723A - Door malfunction prevention apparatus - Google Patents

Abstract

The present invention relates to a door malfunction prevention apparatus, and more particularly, to a door malfunction prevention apparatus which detects a human body approaching from a medium or long distance through a first sensor, and at the same time, verifies a BL key for a smartphone, received through a second sensor, to operate an object only when the verification is satisfied.

Description

Door malfunction prevention apparatus

The present invention relates to a malfunction prevention door device, and more particularly, to a malfunction prevention door device combining a motion detection sensor (PIR sensor or microwave sensor, etc.), an ultrasonic detection sensor, and Bluetooth signal detection.

The conventional method using a key key makes it impossible to use if the key is lost, and there is a risk of fraudulent use due to theft and copying of the key key. ham is pointed out.

In addition, untact is required to protect the source from diseases such as corona virus.

As an alternative to this, a digital door lock device with an electronic number key method has been released, but there is a possibility that the password may be forgotten, and there is a possibility that the password may be leaked due to the damage of the keypad and only the worn out password. In addition, in the case of card reader-type equipment, security is required like office furniture used in banks or financial institutions because the card must be recognized every time to operate. would.

Recently, biometric authentication methods using biometric (fingerprint, vein, iris, voice, etc.) recognition have been invented. It is difficult to expand the base of

Conventionally, a door lock system using a portable terminal has been proposed to overcome the disadvantages of the classic independent door lock system. may have security vulnerabilities in which information is leaked to other media.

In order to solve this problem, there have been attempts to use various short-distance communication methods.

One of them was Bluetooth, but the problem was that the door lock device always communicates with the adjacent Bluetooth device, so power consumption is large.

Since the door lock device generally receives power only from a portable battery and does not have a separate power terminal, there may be a problem in that the operating time of the door lock is shortened.

However, the recently developed Bluetooth 4.0 is a low-energy wireless technology that consumes only a very small amount of power compared to the existing (classic) Bluetooth, and is positioned as a core technology in the newly emerging Bluetooth smart device market.

Bluetooth refers to a short-range wireless technology standard for exchanging information by connecting mobile devices such as smartphones, laptops, and earphones/headphones.

For example, it is mainly used when a low-power wireless connection is required at an ultra-short distance of around 10 meters.

In the conventional opening and closing method of the common front door of a building using Bluetooth (Bluetooth), when the Bluetooth module installed in the common front door transmits a Bluetooth signal or a beacon signal, the smart phone scans the Bluetooth signal, the beacon signal, etc. to measure the signal strength. When the smart phone comes within a certain distance, that is, when the signal strength is within the range, or when a motion sensor such as a microwave recognizes an approaching object, the smart phone application sends a signal to an external server, There is a way to open the door by sending a signal to the Bluetooth module of the front door.

At this time, the Bluetooth module scans the Bluetooth signal beacon signal transmitted by the smart phone and receives authentication information from the smart phone when the motion sensor detects the smart phone at a certain distance or at a signal strength at a certain distance to open the common front door. can be operated in this way.

However, since policies and functions for Bluetooth are different for each smartphone manufacturer, smartphone type, and OS (Operation System), either BLE (Bluetooth Low Energy) method or Beacon method among detailed functions of Bluetooth. There is a problem in that smooth access is impossible in this method.

Also, in general, the problem of devices that pass through wireless communication to authenticate a person has a problem in that communication detection time delay between wireless devices or operation at an appropriate distance between wireless devices cannot be guaranteed.

Meanwhile, as shown in FIG. 1A, Korean Patent Registration No. 2082511 discloses an IoT-based method for managing visitors to a movie theater, the method comprising: sensing, by a camera module and an infrared sensor built into a door, a visitor entering the movie theater; Sensing, by a communication terminal, a ticket input into the smart phone of the visitor using a beacon short-range communication method; receiving, by a central server, information on the sensed visitor from the camera module and the infrared sensor; receiving, by the central server, information on the sensed ticket from the communication terminal; generating, by a processor, visitor information based on the sensed information on the visitor and the sensed information on the ticket; and a database storing the generated visitor information and converting it into data. including,

The visitor information includes whether the visitor purchases a ticket, whether the sensed ticket matches the number of the movie theater, the seat of the visitor, information on the total number of visitors and non-entrants, photo information of the visitor, and the visitor including information about the height of the , the method comprising: deriving, by the processor, the age of the visitor by analyzing the photo information of the visitor; determining, by the processor, whether or not to view the visitor by comparing the age of the visitor with the age grade of the movie being screened; transmitting, by the processor, an alarm to a manager through the central server when it is determined that the visitor is not allowed to watch; and outputting a warning screen and a warning sound by an electric sign provided on the door.

However, when the sensor that senses the visitor enters from a long distance, it does not sense accurately and malfunctions occur.

In addition, Korea Patent No. 2086722 discloses that, when the door short-range wireless communication module is installed at the center of the door, most users approach the door from the center of the door. While limiting the detection angle range (α1), the user must approach the door to some extent to understand the intention to enter. In order to recognize this, the second detection angle range (β2) from the upper center of the door toward the floor outside the building to detect whether there is a mobile communication terminal in the detection area when it approaches the door to some extent. More specifically, it is an invention that enables a mobile communication terminal to be recognized within an angle range of β2 that is greater than or equal to β1 and less than or equal to β3.

However, if an error occurs in the angle calculation, a problem of malfunction occurs due to incorrect sensing.

In addition, the existing Bluetooth smart key is not practical because the Bluetooth pairing time is too long or the sensing distance is not constant due to the characteristics of the wireless device.

Korean Patent No. 0614596 Korean Patent No. 1598793 Korean Patent Publication No. 2006-0064138

The present invention has been made to solve the above problems, and the present invention detects a smartphone and an encrypted Bluetooth beacon signal possessed by a user, transmits it to the central server, and transmits an access permission signal through pre-registered occupant authentication in the server. An object of the present invention is to provide a malfunction prevention door device that allows the door to be opened at an appropriate distance from the door and a comfortable entry and exit is possible.

In addition, the present invention uses a motion detection sensor (PIR sensor or microwave sensor) and an ultrasonic sensor to set an appropriate sensing area so that the door is always opened at an appropriate position by the occupant to prevent malfunction of the door opening and closing at an appropriate distance. An object of the present invention is to provide a malfunction prevention door device that maximizes security and convenience.

In order to solve the above problems, the present invention provides a door device for preventing malfunction of a smart phone including individual ID information, comprising: a first sensor for detecting a medium distance or a long distance; a second sensor for detecting a short distance; and a central processing unit connected to the first sensor and the second sensor through a wired or wireless network. The central processing unit detects a human body approaching from a medium or long distance through the first sensor, and at the same time verifies the BL key for the smartphone received through the second sensor and operates the object only when it is satisfied.

When the second sensor signal is detected in the smart phone, the BL key including the smart phone number and the door password is encrypted and transmitted.

The second sensor is a beacon, and the beacon receiving the smart phone information transmits the received data to the management server.

The management server that has received the data decrypts the password, completes authentication by comparing it with the previously registered entrants, and encrypts and transmits the access permission signal to the central processing unit.

The first sensor is a motion detection sensor for detecting motion.

A battery is connected to the first sensor, the second sensor, and the central processing unit.

The first sensor includes a PIR sensor or a microwave sensor and an ultrasonic sensor.

The second sensor is a beacon that transmits and receives a beacon signal, and advertises the beacon signal according to a predetermined period and simultaneously operates a motion detection sensor and an ultrasonic sensor.

A combination of a first sensor that is a motion detection sensor, a second sensor that is a Bluetooth sensor, and a third sensor that is an ultrasonic sensor inside the malfunction prevention door device can discriminate whether a human body inside or outside the door is detected and opened.

By recognizing the ultrasonic wave of the third sensor in the smart phone, the presence of a human body inside or outside the door is distinguished to prevent malfunction of the door.

The second sensor and the third sensor may be replaced with a hybrid beacon.

The present invention made as described above guarantees immediate and stable operation by combining a motion detection sensor (PIR sensor or microwave sensor) and Bluetooth signal detection.

In addition, the present invention maximizes security and convenience by preventing a malfunction of the door opening and closing at an appropriate distance.

1 is a view showing a configuration according to the prior art.
2 is a view showing the overall configuration of a malfunction prevention door device according to an embodiment of the present invention.
3 is a diagram illustrating a configuration in which a malfunction prevention door device and a management server are connected according to an embodiment of the present invention.
4 is a diagram illustrating that a sensor and a Bluetooth communication channel of a smart phone are connected according to an embodiment of the present invention.
5 is a view for explaining a Bluetooth communication mode according to another embodiment of the present invention.
6 is a view showing the front part of the malfunction prevention door device directly manufactured according to another embodiment of the present invention.
7 is a view showing the rear part of the malfunction prevention door device directly manufactured according to another embodiment of the present invention.
8 is a flowchart illustrating a method of operating a malfunction prevention door device according to another embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

The present invention relates to a malfunction prevention door device made of a smart phone including individual ID information.

As shown in Fig. 2a, the malfunction prevention door device 1 according to the present invention includes a first sensor for detecting a medium distance or a long distance; a second sensor 20 for detecting a short distance; and a central processing unit connected to the first sensor and the second sensor through a wired or wireless network.

As shown in Table 1 below, the central processing unit detects a human body approaching from a medium or long distance through the first sensor and at the same time verifies the BL key for the smartphone received through the second sensor and operates the object only when it is satisfied make it

Also, as shown in FIG. 2B , a third sensor 25 for determining the position of the human body may be further included.

If Bluetooth is detected even inside the door and the door opening malfunctions, the mobile phone detects the sound wave of the ultrasonic generator installed together with the door sensor and separates Bluetooth sensing inside and outside the door to prevent malfunction.

The third sensor 25 is an ultrasonic sensor, and ultrasonic waves, also called 'Ultra-Sonic' or 'Ultra-Sound', have a high frequency and detect sound waves in a range that humans cannot hear. say

That is, a sound wave with a frequency of 16 kHz or higher that exceeds the normal audible range is called ultrasonic.

In the present invention, it is possible to accurately open the door by a combination of the first sensor 10 which is a motion sensor, the second sensor 20 which is a Bluetooth sensor, and the third sensor 25 which is an ultrasonic sensor.

In addition, a hybrid beacon may be used as the third sensor 25 , and the hybrid beacon includes a Bluetooth beacon and an ultrasonic sensor function.

More specifically, the combination of the first sensor 10 as a motion detection sensor, the second sensor 20 as the Bluetooth sensor, and the third sensor 25 as the ultrasonic sensor inside the malfunction prevention door device is used to detect the human body inside or outside the door. It can be opened by distinguishing whether it is detected or not.

The third sensor 25 is installed in the same space as the first sensor 10 which is a motion detection sensor and the second sensor 20 which is a Bluetooth sensor together with the door sensor.

The third sensor 25 detects the sound wave of the ultrasonic generator by the smart phone, distinguishes the presence of a human body inside or outside the door according to the detection signal, and operates together with the Bluetooth sensing function of the second sensor 20 .

The second sensor 20 and the third sensor 25 may be replaced with hybrid beacons.

The hybrid beacon sends a different signal to each door with a high-frequency sound that is inaudible to the human ear instead of the Bluetooth method, and when the microphone of the smartphone recognizes this sound, it recognizes whether the entrant is inside the door or outside the door.

At this time, since the hybrid beacon utilizes a high-frequency sound, the user does not need to operate Bluetooth, and it can be used alone without the first sensor 20 or the second sensor 20 among the three sensors described above.

Meanwhile, the central processing unit may access the management server 40 to verify the BL key for the smart phone.

For example, if it is determined whether the combination of passwords stored in the smartphone satisfies the initially set combination standard, and if it is satisfied, a thing (eg, a door, an important file storage box, a secret doorway, etc.) is operated to enter or an object inside Or make the file available.

In addition, in the step of verifying the ID signal, it is determined whether the input password is the same as the password stored in the memory, and when the input password is the same as the password stored in the memory, the thing is operated.

Specifically, as shown in FIG. 3, in the present invention, when the second sensor signal is detected in the smart phone, the central processing unit 30 encrypts the BL key including the smart phone number and the door password, and the management server ( 40) to the

As an embodiment, a QR code is attached to a specific area, and a program is installed for the malfunction prevention door device by driving the app in the smart phone 50 receiving the QR code input.

Then, input the internally determined smartphone number (or individual identification number) and door password to run the installed program. Only after this process is completed, the malfunction prevention door device operates normally.

That is, through the process of obtaining a QR (quick response) code provided by using the camera of the smartphone 50, the QR code is obtained before establishing a connection with the management server 40, and the obtained QR code It includes the process of loading and installing access app information based on the

The second sensor 20 is a beacon, and the beacon receiving the smart phone information transmits the received data to the management server 40 .

The management server 40 that has received the data decrypts the password, completes authentication by comparing it with a previously registered entrant, and encrypts and transmits an access permission signal to the central processing unit.

The first sensor is a motion detection sensor for detecting motion. The motion detection sensor may be used more effectively in combination with, for example, a human body detection sensor and a conventional CCTV camera.

A battery is connected to the first sensor 10 , the second sensor 20 , and the central processing unit 30 .

Accordingly, the first sensor 10 , the second sensor 20 , and the central processing unit 30 are not connected to the management server 40 by wire, but receive power through a battery and wirelessly transmit data to each other.

The second sensor is a beacon (BLE) that transmits and receives a beacon signal, and advertises the beacon signal according to a predetermined period and simultaneously operates the motion sensor.

As an embodiment, low-power BLE (Bluetooth Low Energy) has a coverage of a distance of about 50 m and is useful for application of the present invention in determining and confirming a location. However, the communication protocol applied to the present invention is not limited to the above, and it is technically possible to connect and disconnect a plurality of beacons and the smart phone 50, and various communication methods that can cover an area of about 5m or more can be applied. will be able

That is, each beacon is connected to the management server 40 through a predetermined link, and the management server 40 identifies a local ID for each beacon, and is selective to the smart phone 50 connected to a plurality of beacons. It transmits a local item to and functions to receive input information from the smartphone 50 in some cases.

The connection between the beacon and the management server 40 may be a wired link such as LAN, WAN, or P1C or a wireless link such as 802.11 wireless LAN, GSM, and UMTS. In addition, a short-distance communication method using the above-described RFID, NFC, Zigbee, Bluetooth, or IR may be considered.

A Bluetooth module such as a beacon according to the present invention forms a transport layer between a Bluetooth module, which is essential to be mounted when implementing an IoT device, and a smartphone, so that a Bluetooth function can be quickly applied.

For example, as shown in FIGS. 4 and 5 , the HOST MCU of the central processing unit 30 connected to the second sensor 20 connects a lossless Bluetooth communication channel with a smart phone or PC to transmit data.

In addition, the central processing unit 30 may set the Bluetooth function with an AT Command (eg, AT-CMD Select).

In addition, the central processing unit 30 is equipped with a Bluetooth SDK/transport layer, and has GPIO-IN/OUT (10 channels), ADC (3 channels), and Calendar (RTC) functions.

In addition, the central processing unit 30 is a Bluetooth service profile, NUS (Nordic UART Service: basic service of the transport layer), DIS (Device Information Service: manufacturer, model, serial number, version information), DFU (Device Firmware Update: firmware) update) function.

The Bluetooth module connected to the MCU is divided into 1) AT-Command mode for setting the operating environment, and 2) Transfer mode for transmitting/receiving data.

The AT-Command mode can set the execution environment inside the Bluetooth module, and when the Bluetooth is not connected or the PIN (P0.11) is Low, the AT command transmitted from the MCU is interpreted and a response is sent to the MCU.

In the transfer mode, data transmitted from the MCU and the smartphone (PC) are mutually transferred through an internal transport layer.

In addition, UART setting consists of commands that can change or test the communication setting of the connected HOST MCU.

As the advertising function of the Bluetooth module, the Bluetooth device in the Broadcast/Peripheral role outputs important information that can be recognized by the nearby Central/Observer devices as packets.

These packets are transmitted to Primary Advertising Channels (3) out of 40 channels at the period set in the Advertising Interval.

Advertising packet is mainly divided into Device Name, Service UUID and additional Scan Response data.

In the connection establishments of the Bluetooth module, a packet of a connectable peripheral advertised in Primary Advertising Channels of the Central role is obtained and a connection is attempted.

The peripheral performs linsten on the corresponding channel for a while for the central to be connected in the advertising process.

If the Central device makes a Connection Request while listening, the Connection process is performed.

The central device is responsible for maintaining the connection and exchanging the connection parameter information with the peripheral.

After this series of processes, a connection is established and a connection event for data exchange occurs at a set period called Connection Interval.

Also, at every Connection Event, the two devices exchange data, and at this time, they interact with the value set in the parameter shown below.

In addition, among the above parameters, the connection parameter, the period at which the Bluetooth device exchanges data (Connection Interval), the number of times that the peripheral ignores data exchange (Slave Latency), and the maximum time the connection is terminated because data transmission/reception does not occur (Supervision Timeout) You can edit one of them.

As another embodiment of the present invention, the short-distance sensor that can be attached to the malfunction prevention door device specifically uses a PIR sensor, and responds to a person as a sensor that passively responds to heat (infrared) emitted from an object.

When a person moving in a certain direction encounters a PIR sensor or a laser Doppler speedometer, the output of the PIR sensor output is a PIR sensor output signal for a person moving at a speed below a certain value or a PIR sensor output for a person moving at a speed above a certain value signal can be controlled.

The PIR sensor is a sensor using the pyroelectric effect that converts incident infrared rays into a voltage form to enable photodetection. charge is generated.

Motion is detected by using the PIR sensor manufactured with these sensitive characteristics, and because it operates on the principle of detecting the difference from the ambient temperature, a person with a temperature difference from the ambient temperature (eg body temperature) moves and approaches the sensor. when the sensitivity is the best.

The PIR sensor has various types depending on the intended use, and is divided into short-range, medium-range, and long-range types according to the sensing distance, and is divided into a ceiling type and a wall type according to a fixed type.

For example, the PIR sensor attached to the upper wall of the door is used to detect a wide area with a horizontal sensing angle of 45 degrees or more.

In addition, a human body having a temperature generally emits radiation, and an optical device for focusing radiation, such as a Fresnel lens, may be further installed above the PIR sensor for accurate detection.

It shows the difference in output signal when an entrant moves at a slow speed or at a high speed at a distance of 1 m.

The human body emits infrared rays with a wavelength of 9.4 to 10.4㎛, and the PIR sensor detects the human body by converting the infrared rays change into a voltage form.

The output signal of the PIR sensor is displayed in the form of a DC voltage superimposed with a very small detection signal of several μV.

Meanwhile, as the second sensor used in the present invention, the laser Doppler sensor is a velocity measuring device using the Doppler effect.

The Doppler effect refers to a phenomenon in which the frequency of light scattered from a moving human body shifts from the frequency of incident light according to the movement speed of the human body.

를 일으킨다.That is, when the light of the frequency f of the Doppler sensor is incident at a certain angle (eg, within 110 degrees) with respect to the moving direction of the human body, the frequency change as in Equation 1 due to the Doppler effect

causes

는 매질 중의 빛의 파장, v는 운동하는 속도이다. 따라서 주파수 변화

를 측정하면, 인체(출입자)의 이동속도를 측정할 수 있다. here,

is the wavelength of light in the medium, and v is the speed of motion. So the frequency change

By measuring , it is possible to measure the movement speed of the human body (entrance and exit).

The above-described measurement method has characteristics such as non-contact measurement, which does not cause confusion of the measurement target (human body), has high spatial resolution, has good linearity from low to high speed, and can measure a wide range.

Here, λ is the wavelength of the signal. The signal reflected from the human body is phase-modulated. If the magnitude of the displacement change of the human body is small compared to the magnitude of the signal wavelength, the phase change will be small.

Accordingly, as the approaching distance of a person increases through the second sensor (phase change measurement) including the PIR sensor or the Doppler sensor, the detection of a human body becomes easier, thereby preventing a malfunction. In order to adjust the detection rate, the RANGE value of FIG. 7 may be increased.

Hereinafter, an operation method using the malfunction prevention door device for carrying out the present invention will be described in detail with reference to FIG. 8 .

First, the malfunction prevention door device made of a smart phone including individual ID information is operated (S101).

The first sensor 10 and the second sensor 20 and the central processing unit connected to the wired or wireless network detects a human body approaching from a medium or long distance through the first sensor (S102, S103).

And at the same time, it proceeds to the step of verifying the BL key (ID signal, etc.) for the smart phone received through the second sensor 20 (S104, S105).

Finally, the step of operating the object only when the first sensor 10 and the second sensor 20 are logically satisfied (S106).

10: first sensor
20: second sensor
25: third sensor
30: central processing unit
40: management server
50: smartphone

Claims (8)

In the malfunction prevention door device made of a smart phone including individual ID information,
a first sensor 10 for detecting a medium or long distance;
a second sensor 20 for detecting a short distance;
a third sensor 25 which is an ultrasonic sensor; and
The first sensor 10 and the second sensor 20 and the central processing unit 30 connected to the wired or wireless network; includes;
The central processing unit detects a human body approaching from a medium or long distance through the first sensor and at the same time mutually recognizes and verifies the BL key for the smartphone received through the second sensor 20, and the third sensor ( 25), a malfunction prevention door device, characterized in that the smart phone recognizes the presence of a human body inside or outside the door to prevent malfunction of the door. According to claim 1,
Malfunction prevention door device, characterized in that when the second sensor signal is detected by the smart phone, the BL key including the smart phone number and the door password is encrypted and transmitted. According to claim 1,
The second sensor 20 is a beacon,
The beacon receiving the smart phone information is a malfunction prevention door device, characterized in that it transmits the received data to the management server (40). 4. The method of claim 3,
The management server that has received the data decrypts the password, completes authentication by comparing it with the previously registered entrants, and encrypts and transmits the access permission signal to the central processing unit. According to claim 1,
The first sensor is a motion detection sensor for detecting a motion; Malfunction prevention door device, characterized in that. According to claim 1,
The malfunction prevention door device, characterized in that the second sensor (20) and the third sensor (25) are replaced by a hybrid beacon. According to claim 1,
The first sensor (10) is a malfunction prevention door device, characterized in that it comprises a PIR sensor or a microwave sensor. The method of claim 1,
The second sensor is a beacon (BLE) that transmits and receives a beacon signal, and advertises the beacon signal according to a predetermined period and simultaneously operates the motion detection sensor.

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