KR102235095B1 - Door opening/closing control method for measuring the temperature of automatic door access requester - Google Patents

Abstract

The present invention provides an access door opening and closing control method, comprising the steps of: as an access requester enters an access door, activating a display screen, taking an IR image of a face, and if being a real person face, activating a white LED and checking whether the access requester wears a mask; if the access requester does not wear a mask, giving an alarm for not wearing a mask; if being in a state of wearing a mask, searching whether the image of the face taken through white light exists in an access history information storage unit; if the face is not searched, checking whether all the persons are allowed to enter the access door, and if it is checked that no persons are allowed to enter the access door, outputting that the face is unregistered; if the face is searched in the access history information storage unit or it is checked that all the persons are allowed to enter the access door, and it is checked that a body temperature measurement function is set, controlling a temperature sensor to emit IR light for temperature measurement; receiving the body temperature measured by the temperature sensor through the IR light for temperature measurement; if the body temperature is equal to or greater than a set value, activating a red LED, outputting that the body temperature is high, and then maintaining a normal turn-on state of an IR camera; if the body temperature measurement function is not set or the body temperature is less than the set value, activating a green LED and outputting a relay signal for opening the access door to an external automatic door opening and closing controller; and outputting a message of normal body temperature via voice or on a screen and maintaining the normal turn-on state of the IR camera. The present invention can control the entrance of an access requester whose body temperature exceeds a preset value.

Description

Door opening/closing control method with body temperature measurement function of access requester {DOOR OPENING/CLOSING CONTROL METHOD FOR MEASURING THE TEMPERATURE OF AUTOMATIC DOOR ACCESS REQUESTER}

The present invention relates to a door opening and closing control method having a body temperature measurement function of the access requester, and more particularly, by recognizing the face as the access requester's face approaches and measuring the body temperature of the face, the recognized access requester and the normal temperature are The present invention relates to a door opening/closing control method having a body temperature measurement function of an access requester in which only the recognized access requester passes through the door.

Humans are classified as warm-blooded animals, and when an outbreak occurs, changes in body temperature occur due to the action of internal immune functions. Such a phenomenon may be a phenomenon that is common from serious infectious diseases such as MERS (Middle East Respiratory Syndrome, MERS) or SARS (Severe Acute Respiratory Syndrome (SARS)), and coronavirus infection-19 (COVID-19). In the case of MERS in 2015, the failure to manage patients infected with MERS caused many people to fear infection and incur a large social cost.

Since then, hospitals and clinics at different levels, and postpartum care centers have been controlling outpatients and visitors.

However, this control simply limits the visiting time, and there is a problem that it is impossible to prepare if an infected person enters and exits within the controlled visiting time.

Therefore, as a method of restricting access, a method of measuring the body temperature of a person entering has emerged.

0001) Korean Patent Registration No. 10-1416568 (2014. 07. 01.) (Face recognition surveillance camera system for entrance doors) 0002) Korean Patent Application Publication No. 2019-0141068 (December 23, 2019) (Smart doorbell system with face recognition function)

Accordingly, the technical problem of the present invention is focused on this point, and an object of the present invention is to recognize a real person's face as the face of the access requester is close and measure the body temperature of the person's face to recognize the recognized access requester and the normal temperature. It is to provide an access door opening/closing control method that has the body temperature measurement function of the access requester in which only the authorized access requester passes through the door.

delete

In order to realize the object of the present invention, an automatic door opening/closing control method having a body temperature measurement function of an access requester according to an embodiment comprises the steps of checking whether an access requester enters while an IR camera is always on. ; Activating a display screen as the access requester enters, controlling a first IR light emitting unit and a second IR light emitting unit to emit IR light for real person recognition, and controlling an IR camera to capture an IR face image; Checking whether the IR face image photographed with IR light is a real human face; Deactivating the display screen if it is checked that it is not an actual human face, and feeding back the IR camera in a state in which it is always turned on; Activating the LEDs so that white light is emitted when it is checked that it is a real human face, and checking whether a mask wearing function is set; If it is checked that the mask wearing function is set, checking whether the access requester is wearing the mask in the captured image; If it is checked that the access requester is not wearing the mask, outputting a mask non-wearing alert through the voice output unit and feeding back to the step of checking whether the mask is worn; If it is checked that the mask wearing function is not set or that the mask wearing state is checked, searching whether a face image photographed through white light exists in the access history information storage unit; If the face is checked as not being searched in the access history information storage unit, checking whether access of all persons is permitted; If it is checked that everyone's access is not allowed, displaying that a face is not registered through a display screen and outputting a voice form through a voice output unit; Checking whether a body temperature measurement function is set when the face is checked as being searched in the access history information storage unit or when it is checked that everyone is allowed to enter; If it is checked that the body temperature measurement function is set, controlling the temperature sensor to emit IR light for temperature measurement; Receiving a body temperature measured by a temperature sensor through IR light for temperature measurement; Checking whether the measured body temperature is greater than or equal to a set value; When the body temperature is checked above the set value, the red LED is activated to emit red light, and the voice and screen indicating that the body temperature is high are output through the audio output unit and the display screen, and the IR camera is always turned on. step; When it is checked that the body temperature measurement function is not set or the body temperature is checked below the set value, activating a green LED to emit green light, and outputting a relay signal for opening the door to an external automatic door opening/closing control controller; And outputting the relay signal, outputting a voice and a screen indicating normal body temperature through a voice output unit and a display screen, and feeding back the IR camera to the step of maintaining an always-on state.

delete

delete

delete

delete

delete

delete

delete

delete

According to the door opening/closing control method having the body temperature measurement function of the access requester, only the recognized access requester and the recognized access requester having a normal temperature by recognizing the face as the access requester's face is close and measuring the body temperature of the face are opened. By passing through, it is possible to control the access of access requesters with fever symptoms.

In addition, it is possible to store and manage the access history of the access requester who enters through the door.

In addition, even if an access requester who enters through the entrance door wears a mask, it is possible to check whether there is heat through a partially exposed face.

1 is a block diagram illustrating an access door opening/closing control system having a body temperature measurement function of an access requester according to an embodiment of the present invention.
FIG. 2 is an example of a screen of a user implementing an access door opening/closing control system having a body temperature measurement function of an access requester shown in FIG. 1.
3A and 3B are flowcharts illustrating a method of controlling the opening and closing of an access door having a body temperature measurement function of an access requester according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than the actual size for clarity of the present invention.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being added.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

1 is a block diagram illustrating an access door opening/closing control system having a body temperature measurement function of an access requester according to an embodiment of the present invention.

Referring to FIG. 1, a door opening/closing control system having a body temperature measurement function of an access requester according to an embodiment of the present invention includes a live-action camera 111, LEDs 112, an IR camera 113, and a first IR light. It includes an emission unit 114, a second IR light emission unit 115, a temperature sensor 116, a processing unit 120, and an output unit 130.

The live-action camera 111 photographs the face of the access requester in a photo-realistic manner, and the photographed face image of the access requester is displayed on the display screen 131.

The LEDs 112 output various color lights such as white, red, and green, including white LED, red LED, and green LED. For example, the white LED emits white light, the red LED emits red light, and the green LED emits green light. In this embodiment, the white light may be used to provide insufficient light when photographing a live image by the live camera 111. The red light may be used to provide a warning that a mask is not worn or an alarm that the body temperature is high. The green light may be used to provide that the door is normally open.

The IR camera 113 photographs the face of the access requester in an IR method, and provides the photographed image to the controller 124.

The first IR light emitting part 114 emits a first IR light as an auxiliary light of the IR camera 113, and the second IR light emitting part 115 is a second light as an auxiliary light of the IR camera 113. It emits IR light. The first IR light emitting part 114 is disposed on one side of the terminal to emit a first IR light in the left area based on the front side, and the second IR light emitting part 115 is disposed on the other side of the terminal to be 2nd IR light may be emitted in the right area based on.

The temperature sensor 116 is a non-contact temperature sensor and measures the body temperature by using the IR light emissivity of the face without contacting the face of the person requesting access to be measured, and the measured body temperature is displayed on the display screen 131. The temperature sensor 116 includes a clock in consideration of the size or distance of the measurement object, the type of the measurement object surface in consideration of the emissivity, the atmospheric effect and the spectral response to transmission through the surface, the temperature range and mounting method, response time, constraint conditions, A signal processing method or the like can be selected.

The temperature sensor 116 may have a distance sensing function. For example, the temperature sensor 116 emits IR light, uses the reflected IR light to calculate a distance to an access requester as a subject, and the calculated distance is displayed on the display screen 131.

The processing unit 120 includes an access history information storage unit 121, a face recognition unit 122, an application linking unit 123, and a control unit 124, and controls whether to open or close the door according to the face and body temperature of the access requester. do.

Specifically, the access history information storage unit 121 stores a picture of the face of a person who is permitted to enter, and a time when the person enters.

The face recognition unit 122 checks the identity of the access requester by comparing the face information of the access requester with the face photo of the access permission person stored in the access history information storage unit 121 through a face recognition algorithm. That is, the face recognition unit 122 extracts the feature points of the access requester through pattern recognition of the entire face of the access requester, that is, eyebrows, eyes, nose, mouth, and chin, and stores the access history information in the access history information storage unit 121. The existence of an access requester is checked through comparison with the stored characteristics of the access permission person. Meanwhile, the face recognition unit 122 may check the identity of the access requester even when the access requester wears a mask. That is, when wearing a mask, even if not only the chin or mouth, but also the nose is covered by the mask, the feature points of the access requester are extracted through pattern recognition such as eyebrows, eyes, and part of the nose, and the extracted feature points are stored in the access history information. The identity of the access requester can be verified by checking whether it exists in (121).

The application linking unit 123 converts and transmits a signal to interwork with an application program downloaded by a user or receives a signal provided from an application program. For example, the application linkage unit 123 may provide a face image of an access requester requesting an access door to a user's application program, and if the access requester is an unregistered access permission person, the access requester's access is temporarily permitted. You may be provided with a signal to do.

As the infrared image is captured through the IR camera 113, the controller 124 determines the person's face and controls the opening and closing of the door based on the temperature measured by the temperature sensor 116.

The output unit 130 includes a display screen 131, an audio output unit 132, a relay output unit 133 and a communication unit 134, displays an image, outputs audio, and requests automatic door opening and closing. .

Specifically, the display screen 131 includes a photographed face image of the access requester, the current date and time, a square box for face recognition surrounding the face of the access requester, a window for entering a password, a page for face registration, and setting Display a page for

The voice output unit 132 outputs an alarm for not wearing a mask, a voice indicating that the face has not been registered, a voice indicating that the body temperature is normal, and a voice indicating that the body temperature is high.

The relay output unit 133 outputs a signal for requesting automatic door opening/closing, and the communication unit 134 is connected in wired/wireless communication with a side provided with a controller for controlling automatic door opening and closing, and transmits a signal output from the relay output unit 133. Send. In this embodiment, the communication unit 134 may employ a Wiegand communication method. Here, the Wigand communication method is a method of transmitting a small amount of data using two D0 and D1 lines, and is mainly used for a communication method between a reader and a controller of an access control device. If D0 is low, it means that the bit value is 0, and if D1 is low, it means that the bit value is 1. Therefore, D0 and D1 do not go low at the same time, and there is no set timing. For example, if D0 is low, an automatic door close is requested, and if D1 is low, an automatic door open may be requested.

FIG. 2 is an example of a screen of a user implementing an access door opening/closing control system having a body temperature measurement function of an access requester shown in FIG. 1.

As shown in (a) of FIG. 2, when the face of an access requester enters the screen, the distance is sensed, and a message or voice is outputted to tell the user to move closer to the sensing distance.

If the face of the access requester is normally entered on the screen and is an authenticated face and the body temperature is lower than the set body temperature, as shown in Fig. 2(b), the door open message is displayed while displaying information on each body temperature and distance. do.

When the face registration button is pressed in (a) of FIG. 2, as shown in (c) of FIG. 2, a photograph of the face taken by the live camera 111 is captured and stored, and the name, affiliation, and telephone number are stored. You can register the face you enter.

When the setting button is selected in (a) of FIG. 2, a window for inputting a password is displayed.

If the password entered in the password input window is low, it is output if the body temperature is normal or the mask is worn according to the option settings such as body temperature check and mask check, and if the mask is not worn, the mask is not worn.

3A and 3B are flowcharts illustrating a method of controlling the opening and closing of an access door having a body temperature measurement function of an access requester according to an embodiment of the present invention.

3A and 3B, the controller 124 checks whether or not an access requester enters in a state in which the IR camera 113 is constantly turned on (step S100).

As the access requester enters in step S100, the control unit 124 activates the display screen 131 (step S102), and the control unit 124 is a first IR light emitting unit 114 to emit IR light for real person recognition. And controlling the second IR light emitting unit 115 and controlling the IR camera 113 to capture an IR face image (step S104).

The control unit 124 checks whether the IR face image photographed with the IR light is a real human face (step S106). Here, checking whether the face of the access requester is the face of the person requesting access may actually enter the face of the person requesting access, but since a printed matter or screen where the face of the access requester was photographed may enter, it is to block the case of such a print or screen entering. to be.

If it is checked that it is not an actual human face in step S106, the controller 124 deactivates the display screen 131 (step S108), and then feeds back the IR camera 113 in a state in which it is always turned on.

If it is checked that it is a real human face in step S106, the control unit 124 activates the LEDs 112 so that white light is emitted (step S110).

Subsequently, the control unit 124 checks whether or not the mask wearing function is set (step S112).

If it is checked that the mask wearing function is set in step S112, the controller 124 checks whether the access requester is wearing a mask in the captured image (step S114).

If it is checked in step S114 that the access requester is not wearing a mask, the control unit 124 outputs a mask non-wearing alert through the voice output unit 132 (step S116), and then feeds back to step S112 to check whether the mask is worn. do.

On the other hand, if it is checked that the mask wearing function is not set in step S112 or that the mask wearing state is checked in step S114, the control unit 124 determines whether the face image photographed through white light exists in the access history information storage unit 121 or the like. Search (step S118).

In step S118, the control unit 124 checks whether or not a face is retrieved from the access history information storage unit 121 or the like (step S120).

If it is checked that the face has not been searched in step S120, the control unit 124 checks whether or not everyone is allowed to enter (step S122).

If it is checked that everyone's access is not allowed, the control unit 124 displays that the face is not registered through the display screen 131 and outputs it in an audio format through the voice output unit 132 (step S124).

On the other hand, if it is checked that the face is searched in step S120 or that everyone's access is allowed in step S122, the control unit 124 checks whether the body temperature measurement function is set (step S126).

If it is checked that the body temperature measurement function is set in step S126, the control unit 124 controls the temperature sensor 116 to emit IR light for temperature measurement (step S128).

Subsequently, the temperature sensor 116 measures the body temperature through IR light for temperature measurement and provides the measured body temperature to the control unit 124 (step S130).

In step S130, the control unit 124 checks whether the measured body temperature is equal to or greater than the set value (step S132). Here, the set value may be, for example, a body temperature of 37.5 degrees Celsius.

When the body temperature is checked above the set value in step S132, the control unit 124 controls to emit red light by activating the red LEDs of the LEDs 112 (step S134).

The control unit 124 outputs the voice and screen indicating that the body temperature is high through the voice output unit 132 and the display screen 131 (step S136), and then feeds back the IR camera 113 to the step of maintaining the always on state. .

On the other hand, if it is checked that the body temperature measurement function is not set in step S126 or if the body temperature is checked in step S132 below the set value, the controller 124 controls the LEDs 112 to emit green light by activating the green LED (step S138).

The control unit 124 outputs a relay signal for opening the door to an external automatic door open/close control controller (not shown) through the relay output unit 133 (step S140).

Subsequently, the control unit 124 outputs the voice and screen of normal body temperature through the voice output unit 132 and the display screen 131 (step S142), and feedback to the step of maintaining the IR camera 113 always on. do.

As described above, according to the present invention, as the face of the access requester approaches, by recognizing the face and measuring the body temperature of the face, only the recognized access requester and the recognized access requester having a normal temperature pass through the door, Access to access requesters with fever symptoms can be controlled. In addition, it is possible to store and manage the access history of the access requester who enters through the door. In addition, even if an access requester who enters through the entrance door wears a mask, it is possible to check whether there is heat through a partially exposed face.

An access door opening/closing control system having a body temperature measurement function of an access requester according to the present invention may be employed in an access control system, a face recognition system, a time and attendance management system, and the like.

Although the above has been described with reference to Examples, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the following claims. You can understand.

111: live camera 112: LEDs
113: IR camera 114: first IR light emitting unit
115: second IR light output unit 116: temperature sensor
120: processing unit 121: access history information storage unit
122: face recognition unit 123: application linkage unit
124: control unit 130: output unit
131: display screen 132: audio output unit
133: relay output unit 134: communication unit

Claims (9)

delete delete delete delete delete delete delete delete Checking whether an access requester enters while the IR camera is always on;
Activating a display screen as an access requester enters, controlling a first IR light emitting unit and a second IR light emitting unit to emit IR light for real person recognition, and controlling an IR camera to capture an IR face image;
Checking whether the IR face image photographed with IR light is a real human face;
Deactivating the display screen if it is checked that it is not an actual human face, and feeding back the IR camera in a state in which it is always turned on;
Activating the LEDs so that white light is emitted when it is checked that it is a real human face, and checking whether a mask wearing function is set;
If it is checked that the mask wearing function is set, checking whether the access requester is wearing the mask in the captured image;
If it is checked that the access requester is not wearing the mask, outputting a mask non-wearing alert through the voice output unit and feeding back to the step of checking whether the mask is worn;
If it is checked that the mask wearing function is not set or that the mask wearing state is checked, searching whether a face image photographed through white light exists in the access history information storage unit;
If the face is checked as not being searched in the access history information storage unit, checking whether access of all persons is permitted;
If it is checked that everyone's access is not allowed, displaying that a face is not registered through a display screen and outputting a voice form through a voice output unit;
Checking whether a body temperature measurement function is set when the face is checked as being searched in the access history information storage unit or when it is checked that everyone is allowed to enter;
If it is checked that the body temperature measurement function is set, controlling the temperature sensor to emit IR light for temperature measurement;
Receiving a body temperature measured by a temperature sensor through IR light for temperature measurement;
Checking whether the measured body temperature is greater than or equal to a set value;
When the body temperature is checked above the set value, the red LED is activated to emit red light, and the voice and screen indicating that the body temperature is high are output through the audio output unit and the display screen, and the IR camera is always turned on. step;
When it is checked that the body temperature measurement function is not set or the body temperature is checked below the set value, activating a green LED to emit green light, and outputting a relay signal for opening the door to an external automatic door opening/closing control controller; And
After outputting the relay signal, outputting a voice and a screen called normal body temperature through an audio output unit and a display screen, and feeding back to the step of maintaining the IR camera always on, measuring body temperature of an access requester. Automatic door opening and closing control method with functions.

Images