KR101558728B1 - Visitor supervisory apparatus and system for notification service of visitor information having the same, and method thereof - Google Patents

Abstract

The present invention relates to a visitor notification service system and a method thereof, and more particularly, to a system and method for a visitor notification service, which can acquire image information and time information of a visitor only when a visitor staying at a certain distance from a door stays for a predetermined time, Can be utilized more efficiently, and the invasion of privacy due to image abuse can be minimized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a visitor monitoring apparatus and a visitor notification service system including the visitor monitoring apparatus,

The present invention relates to a visitor monitoring apparatus and a visitor notification service system including the same, and more particularly, to a system and method for a visitor notification service including a visitor monitoring service and a method thereof, And a visitor notification service system including the same and a method thereof.

In general, the CCTV distribution is expanding for the purpose of crime prevention, but the problem of video abuse, which is a problem thereof, is also increasing.

Although the present CCTV has motion detection function, it is difficult to judge whether the person is passing through or the action to be performed in the area to be monitored because it receives a change of image or input of a human body sensor signal.

That is, there are various events for storing images in CCTV. The most commonly used method is to use the human body sensor and image difference.

The human body sensor has a problem in that many malfunctions occur in an external environment (for example, wind, light, etc.) and stores images by using all passing persons as events.

One of the other methods, the motion detection method using the difference of the image, has a problem of storing an image by generating an event in every motion as well as a person.

In the end, almost all methods can not solve the problems of video abuse and privacy invasion that store images unnecessarily. Therefore, there is a need for a more reliable method of detecting human motion.

On the other hand, the interphone, which depends on the home or office building, uses a camera built in the door bell to identify the visitor. However, since the visitor's information is not stored in the external server, the door is exposed to a crime.

On the other hand, in some schools, students are receiving good responses from parents who are aware of RFID (Radio Frequency Identification) when they come into the school and provide this information to parents' smartphones. However, it is an inefficient problem for parents to use RFID to obtain information that they come home after school or at home when their parents are away from home.

Korea Patent No. 10-0978516

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a visitor monitoring system, which can acquire image information and time information of a visitor only when a visitor staying at a certain distance from the door stays for a predetermined time, Device and a visitor notification service system including the same and a method thereof.

According to an aspect of the present invention, there is provided an image processing apparatus including an image acquiring unit acquiring an image of a specific area at a certain distance from a door; An ultrasonic sensor unit for sensing a visitor at a certain distance from the door using transmission and reception of ultrasonic waves; And a control unit for controlling the image acquiring unit to acquire image information of the visitor when the visitor stays for a predetermined period of time by determining whether a visitor staying at a certain distance from the door is staying for a predetermined time through the ultrasonic sensor unit, And a controller for controlling the time information to be stored in a separate memory together with the image information of the visitor acquired through the web browser.

Here, it is preferable that an acceleration sensor unit for detecting the opening of the door using the change values in the X, Y and Z directions is further included, and the controller detects whether a visitor staying at a certain distance from the door through the ultrasonic sensor unit stays for a predetermined time If the visitor is provided with the opening detection signal of the door from the acceleration sensor unit, the image information and the time information of the visitor stored in the memory are transmitted to a separate visitor management server or registered in advance To the mobile communication terminal.

Preferably, the mobile communication terminal further includes a microphone and a speaker for performing input / output of voice, and the controller may control the microphone and the speaker to communicate with the visitor in real time.

Preferably, the image acquiring unit may be an infrared (IR) camera.

A second aspect of the present invention is a visitor monitoring device installed near a door of a building and acquiring image information and time information of a visitor when a visitor staying at a certain distance from the door stays for a predetermined time; A visitor management server for receiving the image information and time information of the visitor obtained from the visitor monitoring device and storing and managing the database in a database (DB); And a mobile communication terminal for receiving image information and time information of a visitor stored in the visitor management server and displaying the information on a screen.

Here, if the visitor monitoring device detects opening of a door after a predetermined distance from a door has been left for a predetermined time, the visitor monitoring device transmits the acquired image information and time information of the visitor to the visitor management server, To the registered mobile communication terminal.

Preferably, the visitor monitoring device includes: an image acquiring unit that acquires an image of a specific area at a certain distance from a door; An ultrasonic sensor unit for sensing a visitor at a certain distance from the door using transmission and reception of ultrasonic waves; And a control unit for controlling the image acquiring unit to acquire image information of the visitor when the visitor stays for a predetermined period of time by determining whether a visitor staying at a certain distance from the door is staying for a predetermined time through the ultrasonic sensor unit, And a control unit for controlling the time information to be stored in a separate memory together with the image information of the visitor acquired through the display unit.

Preferably, the portable terminal further includes an acceleration sensor unit for detecting whether the door is opened using the change values in the X, Y, and Z directions, and the controller determines whether a visitor staying at a certain distance from the door through the ultrasonic sensor unit stays for a predetermined time The controller transmits the image information and the time information of the visitor stored in the memory to the visitor management server when the acceleration sensor unit receives the opening detection signal from the acceleration sensor unit after determining that the visitor stays for a predetermined time, And simultaneously transmitted to the mobile communication terminal registered in advance.

Preferably, the mobile communication terminal accesses the visitor management server using a pre-installed dedicated application, and can search and confirm image information and time information of a visitor stored in advance.

Preferably, the mobile communication terminal is capable of real-time conversation with a visitor through a microphone and a speaker separately provided to the visitor monitoring device using a pre-installed dedicated application.

A third aspect of the present invention is a method for performing a visitor notification service using a system including a visitor monitoring device, a visitor management server, and a mobile communication terminal, the method comprising: (a) Determining whether or not to stay for a predetermined period of time; (b) acquiring image information and time information of a visitor through the visitor monitoring device when a visitor staying at a certain distance from the entrance door stays for a predetermined time as a result of the determination in the step (a); (c) storing (DB) the image information and time information of the visitor acquired in the step (b) through the visitor management server and storing and managing the database; And (d) displaying the image information and the time information of the visitor stored in the step (c) through the mobile communication terminal on a screen.

Preferably, in the step (b), when it is detected through the visitor monitoring device that a visitor staying at a certain distance from the entrance is staying for a predetermined period of time and detects opening of the entrance door, Information to the visitor management server and transmitting the information to the mobile communication terminal registered in advance.

Preferably, after step (b), storing the image information and the time information of the visitor acquired through the visitor monitoring device in a separate memory may be further included.

The method may further include searching for and checking image information and time information of a visitor previously connected to the visitor management server through a dedicated application installed in the mobile communication terminal after step (d) .

Preferably, after step (d), the mobile communication terminal may further include a step of real-time conversing with a visitor through a microphone and a speaker separately provided to the visitor monitoring device using a dedicated application installed in the mobile communication terminal.

According to the visitor monitoring apparatus of the present invention and the visitor notification service system including the same as described above, when the visitor staying at a certain distance from the entrance is staying for a predetermined time through the visitor monitoring apparatus installed near the entrance door, Information and time information can be obtained and stored separately so that the storage space and driving power can be used very efficiently and privacy invasion due to image abuse can be minimized.

Further, according to the present invention, video information and time information of a visitor are transmitted to a separate visitor management server and / or a mobile communication terminal registered in advance via a wired / wireless communication network to more effectively manage video information and time information of a visitor And can retrieve the video information and time information of the visitor at any time regardless of the time and place, which is advantageous in preventing crime.

In addition, according to the present invention, real-time voice transmission and reception can be performed between a visitor monitoring apparatus installed near a door and a mobile communication terminal, and real-time conversation with a visitor is enabled.

FIG. 1 is a block diagram illustrating a visitor notification service system including a visitor monitoring apparatus according to an exemplary embodiment of the present invention. Referring to FIG.
FIG. 2 is a flowchart illustrating a method for providing a visitor notification service according to an exemplary embodiment of the present invention. Referring to FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will be more apparent from the following detailed description taken in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. "And / or" include each and every combination of one or more of the mentioned items.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. Therefore, it goes without saying that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the technical spirit of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

FIG. 1 is a block diagram illustrating a visitor notification service system including a visitor monitoring apparatus according to an exemplary embodiment of the present invention. Referring to FIG.

Referring to FIG. 1, a visitor notification service system including a visitor monitoring device according to an exemplary embodiment of the present invention includes a visitor monitoring device 100, a visitor management server 200, and a mobile communication terminal 300 .

Herein, the visitor monitoring apparatus 100 is installed in the form of an ordinary interphone near a door of a building. When a visitor staying at a certain distance from a door is staying for a predetermined period of time, .

The visitor monitoring apparatus 100 includes an image acquiring unit 110, an ultrasonic sensor unit 120, a controller 130, and the like.

Here, the image acquiring unit 110 acquires an image of a specific area at a certain distance from the door. The image acquiring unit 110 may be an infrared (IR) camera or a CCD camera capable of photographing even in a dark place, but the present invention is not limited thereto, and any device capable of photographing a specific place can be used.

Although not shown in the drawing, the image acquisition unit 110 typically includes an image sensor, an image signal processor (ISP), a back end chip, and the like.

The image sensor outputs an imaging signal formed by light incident from a lens as raw Bayer RGB format data. The image signal processor ISP converts the Bayer RGB format data into RGB format data and converts it into YUV format data required in a display screen output.

The back end chip is responsible for camera module control including processing the YUV format data output from the image signal processor (ISP) and outputting the photographed image on the display screen. As such a back end chip, A modem (Mobile Switching Modem, MSM) or a digital signal processor (DSP) may be used.

That is, when taking an image using the image acquiring unit 110, according to the imaging signal formed by the light incident from the lens, the Bayer RGB format data in which the image sensor has not been processed is subjected to IIC (Inter Integrated Circuit) The image signal processor ISP receives the RGB format data and converts the RGB format data into a YUV format required in a back-end chip for image processing, Data, and outputs it by using an IIC (Inter Integrated Circuit) communication. Then, the back-end chip processes the received YUV format data and outputs the captured image through a display screen.

The ultrasonic sensor unit 120 performs a function of detecting a visitor at a certain distance from the door using transmission and reception of ultrasonic waves.

The ultrasonic sensor unit 120 is a sensor module for sensing the movement of a person, and is a sensor module for sensing a person staying in a place desired by a user (e.g., a front door of a house).

That is, the ultrasonic sensor unit 120 receives ultrasonic waves reflected from an object and receives a return signal from the ultrasonic sensor unit 120, and measures the distance with a return time. Since the approximate propagation speed is approximately 340 m / s in air, it is possible to measure the distance of an object with this property.

Meanwhile, in the embodiment of the present invention, the ultrasonic sensor unit 120 is used to detect movement of a person, but the present invention is not limited thereto. For example, it may be a sensor for detecting a human body such as a thermal image sensor.

The control unit 130 performs overall control of the device. Specifically, the control unit 130 determines whether a visitor staying at a predetermined distance from the door is staying for a predetermined time through the ultrasonic sensor unit 120. If the visitor stays for a predetermined time, And controls the acquisition unit 110 to acquire image information of the visitor.

In addition, the control unit 130 controls the time information to be stored in the separate memory 140 together with the image information of the visitor acquired through the image acquisition unit 110.

In addition, the visitor monitoring apparatus 100 may further include an acceleration sensor unit 150 for sensing the state in which the door is opened or closed using the change values in the X, Y, and Z directions. At this time, If it is detected through the sensor unit 120 that the visitor staying at a certain distance from the entrance door has been staying for a predetermined period of time and the visitor has been staying for a predetermined period of time and then receives an opening detection signal from the acceleration sensor unit 150, It is preferable to control the image information and time information of the visitor stored in the memory 140 via the wireless communication network 10 to be transmitted to the separate visitor management server 200 or to be transmitted to the mobile communication terminal 300 registered in advance Do.

That is, when a person staying at a specific location is detected using the ultrasonic sensor unit 120, the image is stored in the self memory 140, but the stored image is transmitted to a separate visitor management server 200, And does not transmit any information to the mobile communication terminal 300 such as a smart phone.

When the door is opened, the acceleration sensor unit 150 senses a change in the x or y direction. At this time, the visitor information and time information of the visitor are transmitted to the visitor management server 200 and / or the mobile communication terminal 300, Lt; / RTI >

On the other hand, if only the acceleration sensor unit 150 is used, when the door is opened, the user does not have enough time to obtain visitor image information, and if only the ultrasonic sensor unit 120 is used, . Therefore, if two sensors are used, the problem of invasion of privacy due to image abuse can be solved.

On the other hand, the wired / wireless communication network 10 may be, for example, a wired or wireless Internet, or may be a wired network such as a Bluetooth, a Wi-Fi, a wired public network, It may be an integrated core network.

The visitor monitoring apparatus 100 may further include a microphone 160 and a speaker 170 for performing input and output of voice. In this case, the control unit 130 may control the mobile communication terminal 300 and the wired / 10 to control the microphone 160 and the speaker 170 to enable real-time conversation with the visitor.

Meanwhile, it is preferable that a separate battery is used as the power supply for the visitor monitoring apparatus 100 configured as described above. However, the present invention is not limited to this, and a commercial AC power source (for example, AC 220V) DC power supply.

In addition, the visitor monitoring apparatus 100 may further include a predetermined button. When the button is pressed, the control unit 130 displays a voice message (for example, "an image can be stored" To be output through the output terminal.

The visitor management server 200 receives the image information and the time information of the visitor acquired from the visitor monitoring apparatus 100 and performs a function of storing and managing the database (DB).

The visitor management server 200 includes a web server for connecting the mobile communication terminal 300 or another user terminal such as a notebook computer or a personal computer connected through the wired / And may provide various web services of the visitor management server 200 through a specific web page.

The mobile communication terminal 300 receives the video information and the time information of the visitor stored in the visitor management server 200 and performs a function of displaying the information on the screen.

In addition, the mobile communication terminal 300 can access the visitor management server 200 using a pre-installed dedicated application and search and check the image information and time information of the previously stored visitor.

In addition, the mobile communication terminal 300 may be configured to enable real-time conversation with a visitor through a microphone 160 and a speaker 170 provided in the visitor monitoring apparatus 100 using a pre-installed dedicated application.

The mobile communication terminal 300 may be a smart phone, a tablet, or the like, but is not limited thereto. For example, a cellular phone, a PCS phone, A personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), and a personal digital assistant A wireless application protocol phone, and a mobile game station (mobile play-station).

Hereinafter, a method for performing a visitor notification service using a visitor notification service system including a visitor monitoring device according to an embodiment of the present invention will be described in detail.

FIG. 2 is a flowchart illustrating a method for providing a visitor notification service according to an exemplary embodiment of the present invention. Referring to FIG.

1 and 2, a visitor notification service method according to an embodiment of the present invention first determines whether a visitor staying at a certain distance from a door is staying for a predetermined time through the visitor monitoring device 100 (S100 ).

That is, the step S100 is a process of detecting a movement of a person, and a more detailed procedure is as follows.

First, a timer is initialized in the distance measurement between the controller 130 of the visitor monitoring apparatus 100 and the ultrasonic sensor unit 120 (S110).

Thereafter, ultrasonic waves are generated through the ultrasonic sensor unit 120 and the current timer time is measured and stored (S120).

Then, when a radio wave is received through the ultrasonic sensor unit 120, the distance is calculated by calculating the difference between the timer value and the stored timer value when the ultrasonic wave is generated (S130). In this case, the distance calculation is preferably performed at a speed of about 340 m per second, for example.

Next, when the distance calculated in step S130 is measured at a certain distance (for example, within about 30 cm, which can be corrected), '1' is incremented to the object detection variable. If the distance is calculated to be farther than this distance, And the ultrasonic wave generating routine is executed again (S140).

Thereafter, when the object detection variable is '3' (it is possible to modify), it is determined that the object operates in the monitoring area (S150), the image is acquired through the image acquisition unit 110, And stores it in its own memory 140 after encoding.

On the other hand, if the interval for generating ultrasonic waves is about one second and is continuously detected about three times, it is used as an image storage event. Otherwise, the image is not stored because it is judged as a passing person or a malfunction. Since the sensing time interval or the number of sensing times used herein can be changed, the values can be changed according to the installation environment.

As a result of the determination in step S100, if a visitor staying at a certain distance from the door stays for a predetermined time, the visitor monitoring apparatus 100 acquires image information and time information of the visitor (S200).

Thereafter, the image information and the time information of the visitor obtained in the step S200 are stored in the database (DB) and managed and stored in the visitor management server 200 (S300).

Then, the mobile communication terminal 300 displays the video information and the time information of the visitor stored in step S300 on the screen (S400).

In addition, in step S200, when it is detected through the visitor monitoring device 100 that a visitor staying at a certain distance from the entrance door has been staying for a predetermined time and then detects opening of the entrance door through the acceleration sensor unit 150, And transmitting the image information and the time information of the corresponding visitor to the separate visitor management server 200 and transmitting the image information and the time information to the mobile communication terminal 300 registered in advance.

Furthermore, after step S200, the step of storing the image information and the time information of the visitor acquired through the visitor monitoring device 100 in the separate memory 140 may be further included.

In addition, after step S400, the mobile communication terminal 300 may further include a step of accessing the visitor management server 200 through a dedicated application installed in the mobile communication terminal 300 to search for and confirm image information and time information of a visitor stored in advance have.

After step S400, a step of real-time conversing with a visitor through a microphone 160 and a speaker 170 separately provided to the visitor monitoring apparatus 100 using a dedicated application installed in the mobile communication terminal 300 .

Although the visitor monitoring apparatus and the visitor notification service system including the visitor monitoring service system according to the present invention have been described above, the present invention is not limited thereto, It is possible to carry out various modifications within the scope and also belong to the present invention.

10: wired / wireless communication network, 100: visitor monitoring device,
110: image acquisition unit, 120: ultrasonic sensor unit,
130: control unit, 140: memory,
150: acceleration sensor unit, 160: microphone,
170: speaker, 200: visitor management server,
300: mobile communication terminal

Claims (15)

An image acquiring unit acquiring an image of a specific area at a certain distance from the door;
An ultrasonic sensor unit for sensing a visitor at a certain distance from the door using transmission and reception of ultrasonic waves;
An acceleration sensor unit for sensing whether the door is opened using change values in the X, Y, and Z directions; And
The image acquisition unit controls the image acquisition unit to acquire the image information of the visitor when the visitor stays for a predetermined period of time through the ultrasound sensor unit, And controlling the time information to be stored in a separate memory together with the image information of the acquired visitor,
Wherein the control unit determines that the visitor stays for a predetermined time when the calculated object detection variable is equal to or greater than a predetermined object detection variable based on the object detection variable calculated according to the distance of the visitor from the door,
The object detection variable is set to '1' when the distance of the visitor is within a predetermined distance from the door, and is set to '0' when the distance of the visitor from the door exceeds a predetermined distance Visitor monitoring device featured.
The method according to claim 1,
The control unit senses whether a visitor staying at a predetermined distance from the entrance door through the ultrasonic sensor unit has been staying for a predetermined time, and when the visitor is provided with a door open signal from the acceleration sensor unit after determining that the visitor has stayed for a predetermined time, Wherein the control unit controls the image information and the time information of the visitor stored in the memory to be transmitted to a separate visitor management server or to be transmitted to a mobile communication terminal registered in advance.
3. The method of claim 2,
Wherein the control unit further comprises a microphone and a speaker for performing input / output of voice, and the control unit controls the microphone and the speaker to communicate with the mobile communication terminal to enable real-time conversation with a visitor.
3. The method of claim 2,
Wherein the image acquiring unit comprises an infrared (IR) camera.
A visitor monitoring device installed near a door of a building and acquiring image information and time information of the visitor when the visitor staying at a certain distance from the door stays for a predetermined time;
A visitor management server for receiving the image information and time information of the visitor obtained from the visitor monitoring device and storing and managing the database in a database (DB); And
And a mobile communication terminal for receiving image information and time information of a visitor stored in the visitor management server and displaying the image information on the screen,
The visitor monitoring device comprises:
An ultrasonic sensor unit for sensing a visitor at a certain distance from the door using transmission and reception of ultrasonic waves;
An acceleration sensor unit for sensing whether the door is opened using change values in the X, Y, and Z directions; And
And a control unit for determining whether a visitor staying at a predetermined distance from the door through the ultrasonic sensor unit stays for a predetermined time,
Wherein the control unit determines that the visitor stays for a predetermined time when the calculated object detection variable is equal to or greater than a predetermined object detection variable based on the object detection variable calculated according to the distance of the visitor from the door,
The object detection variable is set to '1' when the distance of the visitor is within a predetermined distance from the door, and is set to '0' when the distance of the visitor from the door exceeds a predetermined distance Features a visitor notification service system.
6. The method of claim 5,
When the visitor monitoring device detects opening of a door after a visitor staying at a certain distance from the entrance door has been staying for a predetermined time, the visitor monitoring device transmits the acquired image information and time information of the visitor to the visitor management server, And transmits the generated information to the mobile communication terminal.
6. The method of claim 5,
The visitor monitoring device comprises:
Further comprising an image acquisition unit for acquiring an image of a specific area at a certain distance from the door,
The control unit determines whether a visitor staying at a certain distance from the door is staying for a predetermined time through the ultrasonic sensor unit and controls the image acquisition unit to acquire image information of the visitor when the visitor stays for a predetermined time, And a controller for controlling the time information to be stored in a separate memory together with the image information of the visitor acquired through the image acquisition unit.
8. The method of claim 7,
The control unit senses whether a visitor staying at a predetermined distance from the entrance door through the ultrasonic sensor unit has been staying for a predetermined time, and when the visitor is provided with a door open signal from the acceleration sensor unit after determining that the visitor has stayed for a predetermined time, And transmits the image information and time information of the visitor stored in the memory to the visitor management server and controls the visitor information to be transmitted to the mobile communication terminal registered in advance.
6. The method of claim 5,
Wherein the mobile communication terminal accesses the visitor management server using a pre-installed dedicated application and searches and confirms image information and time information of a visitor stored in advance.
6. The method of claim 5,
Wherein the mobile communication terminal is configured to enable real-time conversation with a visitor through a microphone and a speaker separately provided to the visitor monitoring device by using a dedicated dedicated application installed therein.
1. A method for performing a visitor notification service using a system including a visitor monitoring device, a visitor management server, and a mobile communication terminal,
(a) detecting a visitor at a distance from the door using ultrasonic transmission / reception through the visitor monitoring device, and determining whether a visitor staying at a certain distance from the door is staying for a predetermined time;
(b) acquiring image information and time information of a visitor through the visitor monitoring device when a visitor staying at a certain distance from the entrance door stays for a predetermined time as a result of the determination in the step (a);
(c) storing (DB) the image information and time information of the visitor acquired in the step (b) through the visitor management server and storing and managing the database; And
(d) displaying, on the screen, the image information and the time information of the visitor stored in the step (c) through the mobile communication terminal,
In the step (b), if the calculated object detection variable is equal to or greater than a predetermined object detection variable based on an object detection variable calculated according to the distance of the visitor from the entrance door, it is determined that the visitor stays for a predetermined time And detecting the opening of the door using the change values in the X, Y, and Z directions,
The object detection variable is set to '1' when the distance of the visitor is within a predetermined distance from the door, and is set to '0' when the distance of the visitor from the door exceeds a predetermined distance Features a visitor notification service method.
12. The method of claim 11,
If it is detected in step (b) that a visitor staying at a certain distance from the door is staying for a predetermined time through the visitor monitoring device and then the opening of the door is detected,
And transmitting the obtained image information and time information of the corresponding visitor to the visitor management server and transmitting the image information and the time information to the mobile communication terminal registered in advance.
12. The method of claim 11,
Further comprising the step of storing the image information and the time information of the visitor acquired through the visitor monitoring device in a separate memory after the step (b).
12. The method of claim 11,
Further comprising: after the step (d), accessing the visitor management server through a dedicated application installed in the mobile communication terminal to search for and confirm image information and time information of a visitor stored in advance, Notification service method.
12. The method of claim 11,
Further comprising the step of, after the step (d), interacting with a visitor through a microphone and a speaker separately provided to the visitor monitoring device in real time using a dedicated application installed in the mobile communication terminal Way.

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