FR3110015A1 - Temperature measurement module for access control device, method of operating such a device, and device thus equipped and configured - Google Patents

Abstract

Device (1) for the access control of an access point, said device comprising: a base (2), comprising a display screen (8) and a programmable intelligent component (16), and a second means (10) fixing, and a second electronic connection means (12), and an additional module (3), comprising a temperature sensor (7), a camera (4), and a first suitable fixing means (9) to cooperate with said second fixing means (10), and a first electronic connection means (11) adapted to cooperate with said second connection means (12), said base (2) being configured to display the image recorded by said camera (4) and the temperature determined using said temperature sensor (7). Figure for the abstract: Fig 1.

Description

Temperature measurement module for an access control device, method of operating such a device, and device thus equipped and configured

Technical field of the invention

The invention relates to the field of building access control devices and systems. More particularly, it relates to a temperature measurement module for an access control device. This device is able to measure and display the temperature of a person who comes in front of the device. This device can be integrated into an integrated system for centralized security management. The invention also relates to a method for using and operating such a device equipped with such a module. The invention also relates to a device equipped with said module, and configured to exploit said method.

State of the art

Various building access control systems are known. Some of these systems are designed to be part of integrated systems for centralized security management (including access control, intrusion detection, video surveillance and technical building management). Such an integrated system is marketed by the applicant under the name Micro-Sesame®. It typically includes a central computer machine used as a server, configuration station and operating station, as well as autonomous automatons for controlling one or more functions (such as: access control, intrusion control, video surveillance, management building technology), said automatons were configured to communicate with the central computer machine via an Ethernet IP type network.

Each autonomous PLC can be linked via interface cards to peripherals such as card readers, keyboards, display screens, cameras, access control devices (barriers, locks, tripods etc.) , actuators (sirens, lighting), sensors (contacts, intrusion detectors, smoke detectors, etc.), some of these functions can also be integrated into the PLCs themselves (for example a keyboard, a display screen, a camera).

For each of these functions there are several technologies; this is particularly the case for the access control function. Such systems are described in numerous patent documents, for example in documents US 2015/0228133 (Illinois Tool Works), US 2017/0142581 (Sensormatic Electronics) and US 2014/0002236 (Viscount Security Systems). The applicant offers a multifunction programmable controller for access control and intrusion under the name Tillys ®.

It appeared the need to measure the temperature of a user in an autonomous and automated way before he enters the premises protected by an access control system. We are looking for a simple and reliable system that allows a user to measure his body temperature. This measurement must be able to be done discreetly, insofar as it concerns personal data relating to his state of health.

Objects of the invention

According to the invention, the problem is solved by a device for access control of an access point, which comprises:

a base, comprising a display screen and a programmable intelligent component (typically of the microcontroller or microprocessor or programmable logic circuit type), and a second fixing means, and a second electronic connection means, and

an additional module, comprising a temperature sensor, a camera, and a first fixing means capable of cooperating with said second fixing means, and a first electronic connection means capable of cooperating with said second connection means, and optionally a means communication module configured to exchange data with a remote programmable logic controller,

said base being configured to display the image recorded by said camera and the temperature determined using said temperature sensor.

Said data communication with a remote programmable automaton can take place via a wireless link or via a wired link.

Advantageously, said additional module comprises an identification means reader carried by a user.

The device may comprise at least one actuator that can be actuated by a user, said actuator being located on the additional module and/or on the base, and in the latter case preferably in the form of a specially programmed zone of its screen. display which in this case is a touch screen.

Said programmable intelligent component can be configured to communicate with an external programmable automaton, via a means of communication such as a wireless link or a wired link. Thus the device, suitably configured (in particular suitably programmed at the level of its programmable intelligent component) can be integrated into an integrated system for the centralized management of the safety of a site.

More generally, said programmable intelligent component of the device is configured to execute a method comprising the following steps:

a) The camera of the additional module takes the image of a user who appears in front of said device,

b) The image is displayed on the base screen with a visual cue to allow the user to position his face in relation to the camera,

c) The shot is validated, and the temperature sensor of the additional module measures the skin temperature of the user, preferably at the level of his forehead,

d) The measured temperature is displayed on the screen.

Said method may comprise a step of verifying an identification means presented by the user to a reader placed in said additional module.

Such a device represents a first object of the present invention.

A second object is an additional module for the device according to the invention, characterized in that it comprises:

a contactless temperature sensor, a camera, and a first attachment means able to cooperate with a second attachment means, and a first electronic connection means able to cooperate with a second electronic connection means, and optionally an actuator and/or a reader.

Yet another object of the invention is a method for controlling access to an access point using a device according to the invention, in which:

a) The camera of the additional module takes the image of a user who appears in front of said device,

b) The image is displayed on the base screen with a visual cue to allow the user to position his face in relation to the camera,

c) The shot is validated, and the temperature sensor of the additional module measures the skin temperature of the user, preferably at the level of his forehead,

d) The measured temperature is displayed on the screen.

The method may include a step of verifying an identification means presented by the user to a reader placed in said additional module.

A last object is an integrated system for the centralized management of the security of a site, comprising at least one device according to the invention, and at least one programmable automaton, said device and said programmable automaton being configured to exchange data, said system optionally comprising a central computer machine, said central computer machine and said programmable automaton being configured to exchange data.

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schematically shows a device according to the invention.

schematically shows an access control system according to the invention.

The following numerals are used in the figure and in the description:

1 Device according to the invention

2 Basic

3 Additional module

4 Camera

5 Actuator

6 Player

7 Temperature sensor

8 Display screen

9.10 First and second attachment means

11.12 First and second means of electronic connection

13 User head image

14 Frame

15 Temperature display area

16 Programmable smart component

17 Means of communication with a network

20 Central Computer Machine

21 PLC

22 Other detection and monitoring system (eg smoke detector).

detailed description

The invention relates to a device 1 which comprises a first part called base 2 , and a second part called additional module 3 . Each of these two parts is configured to cooperate with the other. Said device 1 is part of a system which also includes an autonomous automaton 21 .

The base comprises a screen 8 , preferably a touch screen, configured to serve as a display screen, and advantageously also to allow a user to enter data. The base 8 also comprises a programmable intelligent component 16 of the microcontroller or microprocessor type or programmable logic circuit (for example an FPGA), and optionally a means of communication 17 with an external programmable logic controller; this communication means 17 can be a wired communication interface, or a wireless communication means such as a transceiver. The base 2 can be a product of known type, for example the product marketed by the company TIL Technologies under the trade name Tactillys™, which has been specially adapted and configured to be able to cooperate with the additional module. This specific adaptation and configuration mainly concerns the programming of its programmable intelligent component 16 .

The additional module 3 comprises a reader 6 of means of identification worn by the user who comes in front of said module, and a temperature sensor 7 configured to determine the skin temperature of the user who comes in front of said module. It may include a camera 4 configured to generate a shot of the user who is in front of it. The additional module 3 can also include one or more actuators 5 that can be actuated by the user; the function of these actuators will be explained below, knowing that the device can be configured to operate without an actuator, which is preferred.

Said reader 6 of identification means carried by the user can be a contact or contactless reader, and it can comprise one or more detection means, such as magnetic detection, electronic reading, radiofrequency detection ( according to RFID technology for example) or optical detection, which notably includes a camera. It can be configured to read in particular an RFID card or a magnetic card or a smart card or a visual code (for example a one-dimensional (bar code) or a two-dimensional code (for example the coding known by the acronym QR, which stands for "Quick Response")). The term “means of identification carried by the visitor” is used here in such a way as to include here the body of the user. Thus, said identification means reader can be configured to record and analyze one or more types of biometric data of the user, for example a fingerprint, the geometry of his hand, the venous system, the profile of his voice, the shape of his face, his face, the image of his iris, the venous network of the retina, of the finger or of the hand.

Said temperature sensor 7 configured to determine the skin temperature of the user is advantageously an infrared temperature sensor. A thermopile-based infrared sensor system can be used; advantageously this sensor detects in the spectral band characterized by a wavelength comprised between approximately 5.5 μm and approximately 14 μm. Said infrared sensor system advantageously has a temperature resolution better than 0.5°C, preferably better than 0.30°C, and even more preferably better than 0.20°C.

According to an advantageous embodiment, said additional module 3 is configured to be fixed to the base 2 , for example above the base or below the base or to the right of the base or to the left of the base. To this end, the additional module 3 comprises appropriate first fixing means 9 , capable of cooperating with corresponding second fixing means 10 with which the base is provided. In addition to said fixing means, said module is provided with first means for exchanging data with the base, configured to cooperate with second corresponding means for exchanging data of the base. These first and second data exchange means comprise, respectively, a first 11 and second 12 connection means between the additional module 3 and the base 2 . Different types of connectors, standard or specific, can be used for this purpose, for example USB, USB-C or micro-USB connectors, screw terminal blocks (RS485 type) or other fast connectors of known or unknown type .

Said skin temperature of the user is advantageously his forehead temperature, ie the temperature of his forehead. It must be determined for an optimum distance between the surface of the sensor 7 and the surface of the face (more precisely of the forehead). The adjustment of this distance is made by the user, preferably in the following way: the camera of the additional module takes an image of the user's head, and this image is displayed on the screen of the base, with a geometric reference such as a frame. This marker allows the user to position himself correctly and at the right distance from the camera and the temperature sensor; typically the face should completely fill the frame. The device is configured to detect correct positioning of the face with respect to the mark, which triggers the measurement of the temperature. The device is designed so that said optimum distance is between approximately 15 cm and approximately 30 cm, and preferably between approximately 15 cm and approximately 25 cm.

The measured temperature is displayed in a specific zone 15 of the screen 8 of the base 2 . A device may be provided which limits the field of vision of the screen, in order to guarantee the confidentiality of this display, for example with respect to persons accompanying the user. This device can be represented by side protections of the screen, and/or by a confidentiality filter affixed to the screen. The small optimal distance between the user and the device contributes to blocking the vision for others.

In a preferred embodiment, the camera 4 is permanently active, and it is the detection of a face that activates the display method on the screen 8 , which allows the user to optimize his positioning by relative to the camera 8 and the temperature sensor 7 . Alternatively, a proximity sensor (not shown in the figures) can be provided in the additional module 3 which activates the camera 4 . It is the finding by the programmable intelligent component 15 of the correct framing of the visitor's face relative to the camera 4 that triggers the temperature measurement.

In a first embodiment of the method according to the invention, the device executes a method in which:

(Step 1) The user presents a means of identification (for example a magnetic badge or an RFID badge) to a device located near an access point controlled by the system.

(Step 2) Said identification means is verified by the access control device 1 , by comparison with a pre-established identifier;

(Step 3): The camera 4 of the additional module takes an image of the head 13 of the user.

(Step 4): This image is displayed on screen 8 of the base, to allow the user to position himself correctly in relation to the camera and to the temperature sensor; to this end the screen can display a marker such as a frame 14 within which the user must position his head, and the shot is validated when the position of the head 13 is correct;

(Step 5): The temperature sensor 7 of the additional module measures the skin temperature Tc of the user at face level;

(Step 6): The value of Tc is displayed on a zone 15 of the screen 8 of the base 2 ;

(Step 7): The system verifies the identification of the user and his access authorization for this access point; if the identification is correct and the user is authorized for this access point, the access point controlled by the access control device is released for this user.

The validation of the position in step 4 can be carried out automatically by the system. As such, it is possible to use artificial intelligence software trained with an artificial neural network using a library of face photographs (available for example in the OpenCV library (Open Source Computer Vision Library)); this software makes it possible to recognize the eyes and evaluates their distance and their position to validate that a face is facing the module and at the expected distance. Alternatively, provision can be made for the user to activate an actuator on the additional module or on the touch screen of the base to validate the framing of his face.

The verification in step 2 of the identification means presented in step 1 by the user can be done in known manner, and will not be described here in greater detail. It typically involves said autonomous automaton 21 (which is connected to a central computer machine 20 ). It typically consists of searching in a database containing the identifiers of authorized users. This base is typically found in the programmable automaton 20 with which the base 2 communicates via its communication means 17 , or in a central computer machine 20 of an integrated system for the centralized management of security, whose device 1 is part.

An additional step 5bis can be provided after step 5: “If the value of Tc is less than a reference value Tr minus x degrees, the user is invited to repeat step 3” . The purpose of step 5bis is to rule out measurements of the skin temperature which are manifestly erroneous.

The reference temperature is the skin temperature, measurable on the face, of a healthy human, who is in particular not affected by an infectious disease likely to increase his body temperature. Thus, in the context of the present invention, the reference temperature is typically between 36.0°C and 37.5°C, and in this case the value of x can be for example 2.0°C or 2, 5°C. It is desirable to configure the temperature sensor 7 so that the measured skin temperature is as representative as possible of the body temperature of the user. There is an accessible parameter in the system called Offset which allows shifting the reference temperatures according to the surrounding conditions of the device and in particular the outside temperature and the physical location.

In this first embodiment, the order of these steps can be modified: steps 3, 4, 5 and 6 can be executed before steps 1 and 2. As described above, it is advantageous for detection by the programmable intelligent component 15 of a face in the images captured by the camera 4 which triggers this process. Provision can be made for steps 1, 2 and 7 to be completely independent of steps 3, 4.5 and 6, and for the temperature measurement not to be communicated to the programmable automaton 21 of the system.

In a first variant of this first embodiment, the device 1 is configured so that the display of the temperature Tc in step 6 is intended solely for the user, for personal information purposes, and so that this information is neither associated with his identity nor stored; in particular, it is not transmitted to the programmable automaton 21 or to the central computer machine 20 . This makes it possible to guarantee the protection of the user's personal data concerning his state of health.

In a second variant of this method, step 6 is replaced by a step 6a: “The temperature value is displayed on the screen of the base and compared with a reference value”. Step 7 is replaced by a step 7bis : "If the user's identification is correct and the value of Tc is less than or equal to the reference value Tr, the access controlled by the access control device is released for this user" .

The verification of said means of identification can be a biometric verification, for example of a fingerprint or the shape of a hand presented by the user, or any other means of biometric identification mentioned above.

In a third variant which can be combined with the second variant, said verification is a biometric verification from a shot taken by the base camera. This biometric verification may relate to iris recognition and/or facial recognition. This shot may be a specific shot, different from that described in step (iv), the purpose of which is to allow the user to position his head in relation to the temperature sensor.

The second and third variant can each be combined with the first, if the information relating to the temperature is not transmitted either to the central computer machine 20 or to the programmable logic controller 21 : in this case this information is processed in the module base, and only the instruction to release access or the instruction not to release access is transmitted to the programmable logic controller 21 and/or to the central computer machine 20 .

In a second embodiment of the method according to the invention, the device executes a method in which:

(Step 1) The user presents a means of identification (for example a magnetic badge or an RFID badge) to a device located near an access point controlled by the system.

(Step 2) Said means of identification is verified by the access control device by comparison with a pre-established identifier;

(Step 3): The camera of the additional module takes an image of the user.

(Step 4): This image is displayed on the base screen, to allow the user to position himself correctly in relation to the camera and the temperature sensor; to this end, the screen can display a marker such as a frame within which the user must position his head, and the shot is validated when the position of the head is correct;

(Step 5): The temperature sensor of the additional module measures the skin temperature Tc of the user at face level;

(Step 6bis): The temperature value is displayed on the base screen and compared to a reference value.

(Step 6ter): If the value of Tc is greater than the reference value Tr, the system triggers an action A.

(Step 7bis): The system checks the identification of the user and his access authorization for this access point. If the user identification is correct and if the user is authorized for this access point, and if the value of Tc is less than or equal to the reference value Tr, and no action A has been triggered in step 6ter, the access point controlled by the access control device is released for this user.

Step 5bis indicated above, namely "If the value of Tc is less than a reference value Tr minus x degrees, the user is invited to repeat step 3" , can be added after step 5 and before step 6bis.

At step 6ter, said action A may be, for example, one or more actions selected from the following list:

A1: Display of information on the base screen; this information may include instructions for the user, for example the instruction to put a protective mask on his face;

A2: Sending a message to one or more predetermined recipients; these recipients may have the mission of welcoming the user to escort him to the isolation room or to accompany him outside;

A3: The recording of the temperature in a file, associated or not with the identifier of the user;

A4: Temporary suspension of authorization;

A5: The activation of an intercom link between the device and a monitoring center;

A6: The activation of a video link between the device and a monitoring center.

In this second embodiment, the order of these steps can be modified: steps 3, 4, 5 and 6bis can be executed before steps 1 and 2.

It can be provided that after step 6bis or 6ter the user can block the transmission of the temperature value to the system, by activating an actuator located on the additional module or displayed on the touch screen of the base; in this case step 7bis does not run, and the access point will not open. It can also be provided that the transmission of the temperature value to the system is only done after triggering by the user, for example in response to a question put to him on the screen of the base. It is also possible to provide for this question to be asked by a pre-recorded voice message emanating from the base or the additional module, one or the other being equipped with a loudspeaker for this purpose.

In a first variant of this second embodiment, the system is configured so that the display of the temperature Tc in step 6bis is intended solely for the user, for personal information purposes, and so that this information is neither associated with his identity nor stored; in particular, it is not transmitted to the programmable automaton 21 or to the central computer machine 20 . In this case, step 7bis is replaced by step 7ter: “The system checks the identification of the user and his access authorization for this access point. If the user's identification is correct and if the user is authorized for this access point, the access point controlled by the access control device is released for this user”; in this case, action A need not be action A3 or A4, and will preferably only be action A1.

In a second variant of this second embodiment, the third variant of the first embodiment described above is implemented.

In a third embodiment, the device is configured to allow the user to execute only steps 3, 4, 5 and 6, or 3,4,5, 6bis and possibly 6ter (in the latter case the action A triggered step 6ter is action A1). As described above, it is the detection by the programmable intelligent component 15 of a face in the images captured by the camera 4 which triggers this process. Alternatively, this process can be triggered by actuating an actuator, which can be placed on the additional module or on the touch screen of the base.

As mentioned above, the device according to the invention can be part of an integrated system for the centralized management of the security of a site, which is schematically illustrated in Figure 2. In this example it comprises a central computer machine 20 and two programmable logic controllers 21a , 21b (which can be located for example in two different buildings on the same site, which can be an industrial, hospital or tertiary site); the central computer machine communicates with the programmable automatons for example via an IP network. Each programmable automaton 21a , 21b communicates with three devices 1a , 1b , 1c ; 1d , 1e , 1f according to the invention each control an individual access. Provision can be made for the programmable logic controllers 21a , 21b to also communicate with each other. These links between the programmable automaton 21 and the device 1 and between two programmable automatons are typically RS485 type links.

The integrated system for the centralized management of the safety of a site can comprise other monitoring devices and other detection systems, symbolized in FIG. 2 by the reference numeral 22 . It may for example be a smoke detector.

Claims (11)

Device (1) for access control of an access point, said device comprising:
a base (2), comprising a display screen (8) and a programmable intelligent component (16) of the microcontroller or microprocessor or programmable logic circuit type, and second fixing means (10), and second connection means ( 12) electronic, and
an additional module (3), comprising a temperature sensor (7), a camera (4), and first fixing means (9) capable of cooperating with said second fixing means (10), and first connection means (11) electronics capable of cooperating with said second connection means (12), and optionally a communication means (17) configured to exchange data with a remote programmable logic controller,
said base (2) being configured to display the image recorded by said camera (4) and the temperature determined using said temperature sensor (7). Device (1) according to Claim 1, characterized in that the said additional module comprises a reader (6) of means of identification carried by a user. Device (1) according to Claim 1 or 2, characterized in that it is configured to be integrated into an integrated system for the centralized management of the security of a site. Device (1) according to any one of Claims 1 to 3, characterized in that it comprises at least one actuator (5) which can be actuated by a user, the said actuator being located on the additional module (3) and/or on the base (2), and in the latter case preferably in the form of a specially programmed area of its display screen (8) which in this case is a touch screen. Device (1) according to any one of Claims 1 to 4, characterized in that the said programmable intelligent component (16) is configured to communicate with an external programmable automaton, via a communication means (17) such a wireless link or a wired link. Device (1) according to claim 5, characterized in that said programmable intelligent component (16) is configured to execute a method comprising the following steps:
a) The camera (6) of the additional module (3) takes the image of a user who appears in front of said device (1),
b) The image is displayed on the screen (8) of the base (2) with a visual cue to allow the user to position his face in relation to the camera (3),
c) The shot is validated, and the temperature sensor of the additional module measures the skin temperature of the user, preferably at the level of his forehead,
d) The measured temperature is displayed on the screen (8). Device according to Claim 6, characterized in that the said method comprises a step of verifying an identification means presented by the user to a reader (6) placed in the said additional module (3). Additional module (3) for device according to any one of Claims 1 to 7, characterized in that it comprises:
a contactless temperature sensor (7), a camera (4), and a first fixing means (9) suitable for cooperating with a second fixing means, and a first electronic connection means (11) suitable for cooperating with a second means of electronic connection, and optionally an actuator (6) and/or a reader (6). Method of controlling access to an access point using a device (1) according to any one of Claims 1 to 7, in which:
a) The camera (6) of the additional module (3) takes the image of a user who appears in front of said device (1),
b) The image is displayed on the screen (8) of the base (2) with a visual cue to allow the user to position his face in relation to the camera (3),
c) The shot is validated, and the temperature sensor of the additional module measures the skin temperature of the user, preferably at the level of his forehead,
d) The measured temperature is displayed on the screen (8). Method according to Claim 9, characterized in that it comprises a step of verifying an identification means presented by the user to a reader (6) placed in the said additional module (3). Integrated system for the centralized management of the security of a site, comprising at least one device (1) according to any one of Claims 1 to 7, and at least one programmable automaton (21), the said device (1) and the said programmable logic controller (21) being configured to exchange data, said system optionally comprising a central computing machine (20), said central computing machine (20) and said programmable logic controller (21) being configured to exchange data.