KR102489929B1 - Door opening/closing control system for measuring the temperature of automatic door access requester - Google Patents

Abstract

A door opening and closing control system having a function of measuring the body temperature of the access requester, which recognizes the face of the access requester and measures the body temperature of the face as the face of the access requester approaches, and allows only the recognized access requestor and the recognized access requester with normal temperature to pass through the door. do. The door opening and closing control system having the function of measuring the body temperature of the access requester includes an IR camera that photographs the face of the access requester in an infrared manner; a temperature sensor for measuring the body temperature of the face of the access requester; audio output unit; and a control unit that determines that an infrared image is captured by the IR camera as a human face and controls opening and closing of the door based on the temperature measured by the temperature sensor, wherein the control unit is set to have a mask wearing function. If it is checked, if it is checked that the access requester is not wearing a mask in the captured image, a mask non-wearing alarm is output through the audio output unit.

Description

Door opening and closing control system having a function of measuring the body temperature of a person requesting access

The present invention relates to a door opening and closing control system having a function of measuring the body temperature of an access requester, and more particularly, recognizes the face of the access requester as the face approaches and measures the body temperature of the face to have a normal temperature with the recognized access requester. The present invention relates to a door opening and closing control system having a function of measuring the body temperature of an access requester in which only a 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 the internal immune function. This phenomenon may be a common phenomenon from serious infectious diseases such as Middle East Respiratory Syndrome (MERS) or Severe Acute Respiratory Syndrome (SARS). In the case of MERS in 2015, many people suffered from fear of MERS infection due to the failure to manage MERS-infected patients, resulting in large social costs.

Since then, hospitals and clinics of all levels, postpartum care centers, etc. are performing control on outpatients and visitors.

However, this control simply limits visitation time, and there is a problem in that preparation cannot be made when an infected person enters and exits within the controlled visitation time.

Therefore, a method of measuring the body temperature of an entrant has emerged as a method of restricting access.

0001) Korean Patent Registration No. 10-1416568 (2014. 07. 01.) (Face recognition surveillance camera system for entrance only) 0002) Korean Patent Publication No. 2019-0141068 (2019. 12. 23.) (Smart doorbell system with face recognition function)

Therefore, the technical task of the present invention is to focus on this point, and the object of the present invention is to recognize a real human face as the access requester's face approaches and measure the body temperature of the person's face to recognize that the recognized access requestor has a normal temperature. It is to provide a door opening and closing control system having a function of measuring the body temperature of an access requester in which only the access requester passes through the door.

In order to realize the above object of the present invention, a door opening and closing control system having a function of measuring the body temperature of an access requester according to an embodiment includes an IR camera for photographing a face of an access requester in an infrared method; a temperature sensor for measuring the body temperature of the face of the access requester; audio output unit; and a control unit that determines that an infrared image is captured by the IR camera as a human face and controls opening and closing of the door based on the temperature measured by the temperature sensor, wherein the control unit is set to have a mask wearing function. If it is checked, if it is checked that the access requester is not wearing a mask in the captured image, a mask non-wearing alarm is output through the audio output unit.

In one embodiment, the door opening and closing control system having a body temperature measurement function of the access requester includes a display screen displaying a face image of the access requester, current time information, and body temperature information; a first IR light emitting unit for emitting a first IR light as an auxiliary light of the IR camera; and a second IR light emitting unit configured to emit a second IR light as an auxiliary light of the IR camera, wherein the control unit activates the display screen when an access requester enters while the IR camera is always turned on. and controls the first IR light emitting unit and the second IR light emitting unit to emit IR light for real person recognition, controls the IR camera to capture an IR face image, and captures an IR face image with IR light If it is checked that the face is not a real human face, the display screen may be deactivated, and then the IR camera may be controlled to keep turned on.

In one embodiment, the door opening and closing control system having a function of measuring the body temperature of the person requesting access further includes an access history information storage unit that recognizes a face and stores access history information of a person having a normal temperature face, and the control unit , If it is checked that the mask-wearing function is not set or the mask-wearing state is checked, it is searched whether a face image photographed through white light exists in the access history information storage unit, and the face is detected in the access history information storage unit. If it is checked that not searched, it is checked whether everyone's access is allowed, and if it is checked that everyone's access is not allowed, it is displayed on the display screen that the face is not registered, and the voice output unit displays the voice. can be output in the form

In one embodiment, the control unit checks whether the body temperature measurement function is set when it is checked that the face is searched in the access history information storage unit or that all people are allowed to enter and exit, and determines that the body temperature measurement function is set. If checked, the temperature sensor is controlled to emit IR light for temperature measurement, the body temperature measured by the temperature sensor is received through the IR light for temperature measurement, and red LED is emitted to emit red light when the body temperature is checked above the set value. is activated, and after outputting a voice and a screen indicating that the body temperature is high through the voice output unit and the display screen, the IR camera maintains a constant on state, and it is checked that the body temperature measurement function is not set or the body temperature is less than the set value. When this happens, the green LED is activated to emit green light, and a relay signal for opening the door is output to the external automatic door opening and closing control controller. output and the IR camera can remain on at all times.

In one embodiment, the temperature sensor may include an infrared temperature sensor.

In one embodiment, the door opening and closing control system having a function of measuring the body temperature of the person requesting access may further include an application interlocking unit that provides access history information of the person in conjunction with an external management application in order to service access data.

In one embodiment, the door opening and closing control system having a function of measuring the body temperature of the access requester includes a camera for photographing the face of the access requester; and an LED emitting white light to capture a face by the camera, and the controller may activate the LED to emit white light when it is checked that the face is a real human face.

According to the door opening and closing control system having the body temperature measurement function of the access requester, the face of the access requester is recognized as the face approaches and the body temperature of the face is measured, so that only the recognized access requester and the recognized access requester having a normal temperature can open the door. 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 access requesters entering and exiting through the door.

In addition, even if a person requesting access through the door wears a mask, fever can be checked through a partially exposed face.

1 is a block diagram for explaining a door opening and closing control system having a function of measuring the body temperature of an access requester according to an embodiment of the present invention.
FIG. 2 is examples of user screens implementing the door opening/closing control system having a function of measuring the body temperature of an access requester shown in FIG. 1 .
3A and 3B are flowcharts for explaining a method for controlling opening and closing of a door having a function of measuring the body temperature of a person requesting access according to an embodiment of the present invention.

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

Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention.

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

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless defined otherwise, 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 such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a block diagram for explaining a door opening and closing control system having a function of measuring the body temperature of an access requester according to an embodiment of the present invention.

Referring to FIG. 1, the door opening and closing control system having a function of measuring the body temperature of a person requesting access according to an embodiment of the present invention includes a live camera 111, LEDs 112, an IR camera 113, and a first IR light. It includes an emitting unit 114, a second IR light emitting 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 live action manner, and the photographed face image of the access requester is displayed on the display screen 131 .

The LEDs 112 include a white LED, a red LED, and a green LED, and output various color lights such as white, red, and green. 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 action image by the live action camera 111 . The red light may be used to provide a warning that a mask is not worn or an alarm that a body temperature is high. The green light may be used to provide that a door is normally opened.

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

The first IR light emitter 114 emits a first IR light as an auxiliary light of the IR camera 113, and the second IR light emitter 115 emits a second IR light as an auxiliary light of the IR camera 113. Emits IR light. The first IR light emitting unit 114 is disposed on one side of the terminal and emits the first IR light to the left area with respect to the front, and the second IR light emitting unit 115 is disposed on the other side of the terminal and emits the first IR light to the front side. The second IR light may be emitted to the right area based on .

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

The temperature sensor 116 may have a distance sensing function. For example, the temperature sensor 116 emits IR light and uses the reflected IR light to calculate the distance to the person requesting access, 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 the door is opened or closed according to the face and body temperature of the access requester. do.

Specifically, the entry/exit history information storage unit 121 stores a face photo of a person permitted to enter, an entry/exit time of the person, and the like.

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 permitter stored in the access history information storage unit 121 through a face recognition algorithm. That is, the face recognition unit 122 extracts feature points of the access requester through pattern recognition of the entire face of the access requester, that is, eyebrows, eyes, nose, mouth, chin, etc., and stores the access history information in the access history information storage unit 121. The existence of the access requester is checked through comparison with the stored feature points of the access permittee. Meanwhile, the face recognition unit 122 can confirm the identity of the access requester even when the access requester wears a mask. That is, when a mask is worn, even if the mask covers not only the chin and mouth, but also the nose, the feature points of the access requester are extracted through pattern recognition of the eyebrows, eyes, and parts of the nose, and the extracted feature points are stored in the access history information storage unit The identity of the access requester can be confirmed by checking whether or not it exists in (121).

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

The control unit 124 judges the infrared image as a person's face as the infrared image is captured through the IR camera 113, and controls 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 a voice, 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 access requester's face, a window for password input, a page for face registration, and settings. display pages for

The audio output unit 132 outputs a mask non-wearing alarm, a voice indicating that the face is not 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 requesting opening and closing of the automatic door, and the communication unit 134 is connected through wired/wireless communication with a controller for controlling automatic door opening and closing, and receives a signal output from the relay output unit 133. transmit In this embodiment, the communication unit 134 may employ a Wiegand communication method. Here, the Wiegand 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. When D0 is low, the bit value is 0, and when D1 is low, 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, it may be configured to request an automatic door close when D0 is low and to request an automatic door open when D1 is low.

FIG. 2 is examples of user screens implementing the door opening/closing control system having a function of measuring the body temperature of an access requester shown in FIG. 1 .

As shown in (a) of FIG. 2, when the face of the access requester enters the screen, the distance is detected, and if the face is outside the detection distance, a message or voice is output to tell the user to come a little closer.

If the face of the access requester normally enters the screen and is an authenticated face and the body temperature is lower than the set body temperature, as shown in (b) of FIG. do.

When the face registration button is pressed in (a) of FIG. 2, as shown in (c) of FIG. It is possible to register a face by entering it.

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, according to the option settings such as temperature check or mask check, if the body temperature is normal or the mask is worn, it is output, and if the mask is not worn, the mask is not worn.

3A and 3B are flowcharts for explaining a method for controlling opening and closing of a door having a function of measuring the body temperature of a person requesting access according to an embodiment of the present invention.

Referring to FIGS. 3A and 3B , in a state where the IR camera 113 is always turned on, the control unit 124 checks whether an access requester enters (step S100).

As the access requester enters in step S100, the controller 124 activates the display screen 131 (step S102), and the controller 124 uses the first IR light emitter 114 to emit IR light for real person recognition. and controls the IR camera 113 to capture an IR face image by controlling the second IR light emitter 115 (step S104).

The controller 124 checks whether the IR face image photographed with IR light is a real human face (step S106). Here, checking whether or not it is the face of the access requester is to block the case where the actual access requester's face may enter, but the printout or screen on which the access requester's face is photographed may enter. to be.

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

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

Subsequently, the controller 124 checks whether the mask wearing function is set (step S112).

If it is checked that the mask wearing function is set in step S112, the control unit 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 alarm through the audio output unit 132 (step S116), and then feeds back to step S112 to check whether or not 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 is worn in step S114, the control unit 124 checks whether a 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 the face is retrieved from the access history information storage unit 121 or the like (step S120).

If it is checked in step S120 that no face has been detected, the control unit 124 checks whether all persons are permitted to enter or not (step S122).

If it is checked that all persons are not permitted to enter, the control unit 124 displays that the face is not registered through the display screen 131 and outputs it in the form of audio through the audio output unit 132 (step S124).

On the other hand, if it is checked that the face is searched in step S120 or that entry of all persons is allowed in step S122, the controller 124 checks whether the body temperature measuring function is set (step S126).

If it is checked in step S126 that the body temperature measurement function is set, the controller 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 controller 124 (step S130).

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

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

The control unit 124 outputs a voice indicating that the body temperature is high and a screen, respectively, 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 in step S126 that the body temperature measurement function is not set or if the body temperature is checked to be less than the set value in step S132, the control unit 124 activates the green LED to control the LEDs 112 to emit green light (step S132). S138).

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

Subsequently, the control unit 124 outputs a voice and a screen saying that it is normal body temperature through the voice output unit 132 and the display screen 131 (step S142), and then the IR camera 113 is fed back to the step of maintaining the always-on state. do.

As described above, according to the present invention, as the face of the access requester approaches, the face is recognized and the body temperature of the face is measured so that only the recognized access requestor and the recognized access requester having a normal temperature pass through the door, 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 access requesters entering and exiting through the door. In addition, even if a person requesting access through the door wears a mask, fever can be checked through a partially exposed face.

The door opening and closing control system having a function of measuring the body temperature of a person requesting access 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 claims below. You will understand.

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

Claims (7)

An IR camera that captures the face of an access requester using an infrared method;
a temperature sensor for measuring the body temperature of the face of the access requester;
audio output unit;
a display screen displaying a face image of an access requester, current time information, and body temperature information;
an access history information storage unit that recognizes a face and stores access history information of a visitor having a normal temperature face; and
A control unit for determining that an infrared image is captured by the IR camera as a human face and controlling opening and closing of the door based on the temperature measured by the temperature sensor,
The control unit outputs a mask non-wearing alarm through the audio output unit when it is checked that the mask wearing function is set and it is checked that the access requester is not wearing a mask in the captured image;
If it is checked that the face is searched in the access history information storage unit or that everyone's access is allowed, it is checked whether the body temperature measurement function is set,
If it is checked that the body temperature measurement function is set, the temperature sensor is controlled to emit IR light for temperature measurement;
Receiving the body temperature measured by the temperature sensor through IR light for temperature measurement;
When the body temperature is checked above the set value, the red LED is activated to emit red light, and after outputting a voice and a screen indicating that the body temperature is high through the voice output unit and the display screen, the IR camera maintains a constant on state, and the body temperature measurement function If it is checked that is not set or the body temperature is checked to be less than the set value, the green LED is activated to emit green light, a relay signal for opening the door is output to the external automatic door opening and closing control controller, and the relay signal is output. A door opening and closing control system having a function of measuring the body temperature of an access requester, characterized in that the voice and screen of normal body temperature are output through the voice output unit and the display screen, and the IR camera is always turned on. According to claim 1,
a first IR light emitting unit for emitting a first IR light as an auxiliary light of the IR camera; and
Further comprising a second IR light emitter for emitting a second IR light as an auxiliary light of the IR camera,
The control unit,
Activate the display screen as the access requester enters in a state where the IR camera is always turned on;
Control the first IR light emitting unit and the second IR light emitting unit to emit IR light for real person recognition;
Control the IR camera to capture an IR face image;
When it is checked that the IR face image photographed with IR light is not a real human face, the display screen is deactivated, and then the IR camera is controlled to keep on at all times. control system. The method of claim 2, wherein the control unit,
If it is checked that the mask-wearing function is not set or the mask-wearing state is checked, whether a face image photographed through white light exists in the access history information storage unit is searched,
If it is checked that the face is not searched in the access history information storage unit, it is checked whether everyone is allowed to enter,
Door opening and closing control with a function of measuring the body temperature of the person requesting access, characterized in that when it is checked that entry of all persons is not allowed, it is displayed through the display screen that the face is not registered and output in the form of a voice through the audio output unit. system. delete The door opening and closing control system according to claim 1, wherein the temperature sensor includes an infrared temperature sensor. The door opening and closing control system according to claim 1, further comprising an application interlocking unit that interworks with an external management application to provide access data service and provides access history information of a visitor. The method of claim 1, further comprising: a camera for photographing the face of the access requester; and
Further comprising an LED emitting white light for face photographing by the camera,
The door opening and closing control system having a function of measuring the body temperature of the access requester, characterized in that the control unit activates the LED to emit white light when it is checked that it is a real human face.

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