KR102551422B1 - Door malfunction prevention apparatus - Google Patents

Abstract

The present invention relates to a malfunction prevention door device, and more particularly, detects a human body approaching from a medium or long distance through a first sensor and at the same time verifies and satisfies a BL key for a smartphone received through a second sensor It relates to a malfunction prevention door device that operates objects only when the

Description

Malfunction prevention door device {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 sensor (PIR sensor or microwave sensor, etc.), an ultrasonic sensor, and a Bluetooth signal detection.

The method using the conventional key key is not only impossible to use if the key is lost, but there is a risk of fraudulent use due to theft and copying of the key key. Ham is pointed out.

In addition, there is a demand for untact to protect the source from diseases such as corona virus.

As an alternative to this, an electronic number key-type digital door lock device is being released, but there is a possibility that the password may be lost, and the password may be leaked due to damage to the keypad and wear of frequently used passwords. In addition, in the case of card reader-type equipment, it operates only when the card is recognized every time, so it is less convenient to operate when applied to furniture or safes that require security but require frequent opening and closing of doors, such as office furniture used by banks or financial institutions. would.

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

Conventionally, a door lock system using a portable terminal that is always carried has been proposed to overcome the disadvantages of the classic independent door lock system, but a system in which an authentication procedure is performed through a base station and the base station provides the authentication result to the door lock device to drive the lock device. may have security vulnerabilities in which information is leaked to other media.

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

One of them was Bluetooth, but there was a problem that power consumption was high because the door lock device always communicated with an adjacent Bluetooth device.

Since the door lock device is generally powered by a portable battery and does not have a separate power terminal, the operation time of the door lock may be shortened.

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

Bluetooth refers to a short-distance wireless technology standard that exchanges information by connecting mobile devices such as smartphones, laptops, and earphones/headphones to each other.

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

In the conventional method of opening and closing the common front door of a building using 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, beacon signal, etc. to measure the signal strength. When the smart phone reaches a certain distance, that is, when the signal strength comes within the range, or when a motion sensor such as microwave recognizes an approaching object, the smart phone application transmits a signal to an external server and rejoins the 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, receives authentication information from the smart phone when the motion sensor detects the smart phone at a certain distance or strength of the signal at a certain distance, and opens the common front door. can be operated in such a way.

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

In addition, devices that undergo authentication through wireless communication generally have a problem in that communication detection time delay between wireless devices or operation at an appropriate distance between wireless devices cannot be guaranteed.

On the other hand, as shown in FIG. 1A, Korean Patent Registration No. 2082511 discloses an IoT-based method for managing visitors to a movie theater, wherein a camera module and an infrared sensor built into a door sense the visitors entering the movie theater; Sensing, by a communication terminal, a ticket entered 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 converting the generated visitor information into data by a database. including,

The visitor information includes whether or not the visitor has purchased a ticket, whether or not the sensed ticket and the number of movie theaters are matched, the seat of the visitor, information on the total number of visitors and non-entrants, photo information of the visitor, and information on the number of visitors and deriving, by the processor, the age of the visitor by analyzing photo information of the visitor; determining, by the processor, whether or not the visitor watches the movie by comparing the age of the visitor with an age rating of the screening movie; 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 the electric signboard provided in the door.

However, when a sensor for sensing a visitor enters from a long distance, a malfunction occurs because it cannot accurately sense the sensor.

In addition, Korean Patent Registration No. 2086722 discloses that when the door short-range wireless communication module is installed in the center of the door, most users access the door from the center of the door, so the first step for the left and right directions is based on the center of the door. While limiting the detection angle range (α1), the user needs to approach the door to some extent to determine the intention to enter. Therefore, in order to recognize this, the second detection angle range (β2) to detect whether there is a mobile communication terminal in the detection area when approaching the door to a certain extent. More specifically, it is an invention that allows a mobile communication terminal to be recognized within an angular range of β2, which is equal to or greater than β1 and equal to or less than β3.

However, when an error occurs in such angle calculation, a malfunction occurs because sensing is not performed accurately.

In addition, existing Bluetooth smart keys are rarely used due to lack of practicality because the Bluetooth pairing time is too long or the detection distance is not constant due to the characteristics of wireless devices.

Korean Registered Patent No. 0614596 Korea 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 possessed by a user and an encrypted Bluetooth beacon signal, transmits it to a central server, and passes an access permission signal through pre-registered visitor authentication in the server. It is an object of the present invention to provide a malfunction-preventing door device that receives a door and opens the door at an appropriate distance from the door so that the person can enter and exit comfortably.

In addition, the present invention utilizes 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 person entering the door, thereby preventing malfunction of the door opening and closing at an appropriate distance. The purpose is to provide a malfunction prevention door device that maximizes security and convenience.

In order to solve the above problems, the present invention is a malfunction prevention door device made of a smart phone including individual ID information, a first sensor for detecting a medium or long distance; a second sensor that senses 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 simultaneously verifies the BL key for the smartphone received through the second sensor, and operates the object only when satisfied.

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.

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

The management server that has received the data decrypts the password, compares it with a pre-registered visitor, completes authentication, and encrypts and transmits an access permission signal to the central processing unit.

The first sensor is a motion 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 signal of the beacon according to a predetermined period and simultaneously operates a motion detection sensor and an ultrasonic sensor.

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

The smart phone recognizes the ultrasonic wave of the third sensor, and distinguishes whether there is a human body inside or outside the door 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 malfunction of the door opening and closing at an appropriate distance.

1 is a diagram showing a configuration according to the prior invention.
Figure 2 is a view showing the overall configuration of the malfunction prevention door device according to an embodiment of the present invention.
3 is a diagram showing 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 showing 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 diagram illustrating a Bluetooth communication mode according to another embodiment of the present invention.
6 is a view showing a front portion of a malfunction prevention door device manufactured directly according to another embodiment of the present invention.
7 is a view showing a rear part of a malfunction prevention door device manufactured directly according to another embodiment of the present invention.
8 is a flowchart showing 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 examples described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer explanation. It should be noted that in each drawing, the same members are sometimes indicated by the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are 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 middle or long distance; a second sensor 20 that senses 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 satisfied let it

In addition, 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 waves of the ultrasonic generator installed together with the door sensor to distinguish the 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 transmit sound waves in a range that humans cannot hear. say

In other words, sound waves with a frequency of 16 kHz or higher beyond the normal audible range are called ultrasonic waves.

According to the present invention, the door can be accurately opened 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 sensing sensor function.

In detail, a combination of the first sensor 10 as a motion sensor, the second sensor 20 as a Bluetooth sensor, or the third sensor 25 as an ultrasonic sensor inside the malfunction prevention door device is used to enter the door. It can be opened by distinguishing whether inside or outside human body is detected.

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

The smart phone detects the sound waves of the ultrasonic generator of the third sensor 25, 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 a hybrid beacon.

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

At this time, since the hybrid beacon utilizes a high-frequency sound, the user does not have 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 smartphone.

For example, if it is determined whether the combination of passwords stored in the smartphone satisfies the initially set combination specification, and if it is satisfied, an object (e.g., a door, an important file locker, a secret entrance, etc.) is operated to enter or enter the interior 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 if the input password is the same as the password stored in the memory, the object is operated.

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

As an embodiment, a QR code is attached to a specific area, and a program is installed for a malfunction prevention door device by driving an app in the smartphone 50 that has received the QR code.

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

That is, through a process of obtaining a QR (quick response) code provided 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 Based on this, it includes a process of loading and installing access app information.

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

The management server 40 that has received the data decrypts the password, compares it with a pre-registered visitor, completes authentication, and encrypts and transmits an access permission signal to the central processing unit.

The first sensor is a motion sensor for detecting motion. The motion sensor may be used more effectively by combining a human body sensor and a conventional CCTV camera, for example.

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

Therefore, 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 transmit data wirelessly.

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

As an embodiment, Bluetooth Low Energy (BLE) of low power has a coverage of up to about 50 m and is useful for the 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 technically, a plurality of beacons and smart phone 50 can be connected and disconnected, and various communication methods capable of covering an area of about 5 m or more can be applied. You will be able to.

That is, each of the beacons is connected to the management server 40 through a predetermined link, and this management server 40 identifies the local ID for each beacon and selects the smart phone 50 connected to the plurality of beacons. It transmits a local item to, and functions to receive input information from the smart phone 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, or UMTS. In addition, a short-range communication method using the aforementioned RFID, NFC, Zigbee, Bluetooth, or IR may also be considered.

A Bluetooth module such as a beacon according to the present invention forms a transmission layer between a Bluetooth module and a smartphone, which must be installed when implementing an IoT device, so that Bluetooth functions 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 smart phone or PC through a lossless Bluetooth communication channel 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 CPU 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 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 an 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 Bluetooth is not connected or PIN (P0.11) is Low, the AT command transmitted from the MCU is interpreted and a response is sent to the MCU.

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

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

As an advertising function of the Bluetooth module, the Bluetooth device in the role of Broadcast/Peripheral outputs important information in the form of packets that the central/observer devices around it can recognize.

These packets are transmitted to Primary Advertising Channels (3) among 40 channels at intervals set in the Advertising Interval.

Advertising packets are mainly divided into Device Name, Service UUID and additional Scan Response data.

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

The Peripheral temporarily performs Linsten in the corresponding channel for the Central to be connected in the advertising process.

If the central device makes a connection request during the listening process, the connection process is performed.

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

When this series of processes is completed, a connection is established and connection events for data exchange occur at set intervals called Connection Interval.

In addition, at every connection event, the two devices exchange data, and at this time, they mutually operate with the value set in the parameter below.

In addition, among the above parameters, the connection parameters, which are the period in which the Bluetooth device exchanges data (Connection Interval), the number of times peripheral ignores data exchange (Slave Latency), and the maximum time when the connection is terminated due to no data transmission/reception (Supervision Timeout) One of them can be modified.

As another embodiment of the present invention, the short-range 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 rays) emitted from objects.

When a visitor moving in a certain direction encounters a PIR sensor or a laser Doppler speedometer, the PIR sensor output outputs the PIR sensor output signal for a person moving at a speed below a certain value or the 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 a pyroelectric effect that enables optical detection by converting incident infrared rays into a form of voltage, and is made of crystal metal, and when heat is applied to a portion exposed to infrared rays, the surface charge is generated.

The PIR sensor manufactured with such sensitive characteristics is used to detect movement, and since it operates on the principle of detecting the difference with the ambient temperature, the person (e.g., body temperature) with the temperature difference between the ambient temperature and the ambient temperature may move and get closer to the sensor. The sensitivity is best when

The PIR sensor has various types according to usage, and is divided into short, medium, and long-range types according to sensing distance, and is divided into ceiling type and wall-mounted type according to a fixed type.

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

Also, in general, a human body having a temperature emits radiation, and an optical device for focusing the radiation, such as a Fresnel lens, may be further installed on the upper part of the PIR sensor to accurately detect the radiation.

If the visitor moves at a slow speed or at a high speed at a distance of 1m, the difference in output signal is shown.

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

The output signal of the PIR sensor appears in the form of a very small detection signal of several μV superimposed on a DC voltage.

Meanwhile, the laser Doppler sensor as the second sensor used in the present invention is a speed measurement 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 moving human body, the frequency change as shown in Equation 1 by 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 at which it moves. Hence the frequency change

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

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

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

Therefore, as the approach distance of a person gets closer through the second sensor (phase change measurement) including a PIR sensor or a Doppler sensor, the human body can be easily detected, thereby preventing an erroneous operation. In order to adjust the detection rate, the RANGE value of FIG. 7 may be increased.

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

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

The central processing unit connected to the first sensor 10 and the second sensor 20 through a 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 a step of verifying the BL key (ID signal, etc.) related to the smartphone transmitted through the second sensor 20 (S104, S105).

Finally, the step of operating the object proceeds 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 smartphone containing individual ID information,
A first sensor (10) for detecting medium- or long-distance movement;
A hybrid beacon including a second sensor 20, which is a Bluetooth sensor for detecting the movement of a short-range object, and a third sensor 25, which is an ultrasonic sensor; and
A central processing unit 30 connected to the first sensor 10 and the hybrid beacon through a wired or wireless network; includes,
Under the condition that the central processing unit detects a human body approaching from a medium or long distance through the first sensor, the smartphone number and door password received through the second sensor 20 are mutually recognized and verified. The door is opened only when the conditions are satisfied at the same time,
By recognizing the ultrasonic wave of the third sensor of the hybrid beacon on the smart phone, the presence of a human body inside or outside the door is distinguished to prevent malfunction of the door,
The management server receiving the data transmitted by the second sensor 20 of the hybrid beacon decrypts the password, compares it with a pre-registered visitor, completes authentication, and encrypts and transmits an access permission signal to the central processing unit. Malfunction prevention door device to be. delete According to claim 1,
The second sensor 20 is a beacon,
The beacon receiving the information of the smart phone malfunction prevention door device, characterized in that for transmitting the received data to the management server (40). delete According to claim 1,
The first sensor is a motion detection sensor for detecting motion; malfunction prevention door device, characterized in that. delete 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. According to claim 1,
The second sensor is a beacon (BLE) that transmits and receives a beacon signal; and advertises the signal of the beacon according to a certain period and operates a motion sensor at the same time.

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