FR3106214A1 - Motion detection system, method of assisting with the installation of a motion detector and associated computer program - Google Patents

Abstract

Motion detection system, method of assisting with the installation of a motion detector and associated computer program The invention relates to a motion detection system (10) comprising a motion detector (12), the detector motion sensor (12) comprising a motion sensor (18) associated with an accelerometer (20), the accelerometer (20) being configured to determine information representative of the installation position of the motion detector (12), the system detection device further comprising a mobile terminal (14), separate from the movement detector (12), configured to display an image representative of the space monitored by the movement detector (12) on which at least one indicator of the movement. The detection area of the motion detector is superimposed according to the information representative of the installation position of the motion detector (12) transmitted by the motion detector (12). Figure for abstract: Figure 1

Description

Motion detection system, method for assisting the installation of a motion detector and associated computer program

The present invention relates to a system a motion detection device comprising a motion detector, the motion detector comprising a motion sensor.

The invention also relates to a method for assisting the installation of a motion detector.

The invention also relates to a computer program comprising software instructions which, when executed by a computer, implement such a method for assisting the installation of a motion detector.

Currently, to properly place a motion detector (i.e. presence detector) whose detection zone is generally invisible to the naked eye in a home including one or more pets, the presence of a professional installer is generally necessary. To do this, the professional installer generally uses a false detector generally on a ball joint incorporating a laser to simulate the detection zone of the real detector and to optimize the installation height, once the adjustment has been made, the false detector is replaced. by the real one on the support (ball joint).

If it is the user and not an installer who is responsible for the adjustment, he must carry out empirical tests by testing the detection field in real conditions, and to do this, activate the alarm then crawl and/or or move his animal around the room to check that the alarm does not detect the presence of the animal but only that of a human.

The object of the invention is therefore to propose a system motion detection system capable of being correctly installed independently without requiring the presence of a professional, nor the implementation of a series of time-consuming empirical tests.

To this end, the subject of the invention is a motion detection system comprising a motion detector, the motion detector comprising a motion sensor associated with an accelerometer, the accelerometer being configured to determine information representative of the position of installation of the motion detector, the motion detection system further comprising a mobile terminal, separate from the motion detector, configured to display an image representative of the space monitored by the motion detector on which at least one indicator of the detection area of the motion detector is superimposed according to the representative information of the installation position of the motion detector transmitted from the motion detector.

The invention thus makes it possible to view directly (i.e. almost instantaneously) on a mobile terminal the detection zone of a motion detector within a space to be monitored, and therefore to optimize the installation so that the zone of detection corresponds to the needs of the user.

According to other advantageous aspects of the invention, the motion detection system comprises one or more of the following characteristics, taken in isolation or in all technically possible combinations:

- the motion sensor is a pyroelectric sensor;

- the system further comprises a central management separate from the motion detector and separate from the mobile terminal, and in which the information representative of the installation position of the motion detector is transmitted by the motion detector to the central management ;

- the management unit is configured for:

- retransmit information representative of the installation position of the motion detector to the mobile terminal, or

- constructing said representative image of the space monitored by the motion detector on which at least one indicator of the detection zone of the motion detector is superimposed and transmitting it to the mobile terminal;

- information representative of the installation position of the motion detector is transmitted by the motion detector directly to the mobile terminal using a short-distance data exchange protocol;

- the motion detector is configured to encrypt said information representative of the installation position of the motion detector prior to its transmission;

- the motion detector is configured to transmit said information representative of the installation position of the motion detector during one or more predetermined phases;

- the mobile terminal comprises a camera suitable for scanning the space monitored by the motion detector, and in which the mobile terminal is configured to display in augmented reality said image representative of the space monitored by the motion detector on which at least an indicator of the detection area of the motion detector is superimposed;

- the detection zone is a cone whose vertex is the installation position of the motion sensor;

- the motion detector comprises at least one memory space configured to store a three-dimensional model of said cone;

- the accelerometer is further configured to determine the direction of installation, or being installed, of said motion detector along a vertical axis of a predetermined frame of reference and in which the mobile terminal is further configured to display an indicator representative of said direction of installation, or respectively during installation, transmitted by the motion detector;

The invention also relates to a method for assisting the installation of a motion detector implemented by a mobile terminal distinct from the motion detector, the motion detector comprising a motion sensor associated with an accelerometer, the the accelerometer being configured to determine information representative of the installation position of the motion detector, the method comprising at least the display of an image representative of the space monitored by the motion detector on which at least one indicator of the detection area of the motion detector is superimposed according to the information representative of the installation position of the motion detector transmitted by the motion detector.

According to other advantageous aspects of the invention, the method for assisting with the installation of a motion detector comprises one or more of the following characteristics, taken in isolation or in all technically possible combinations:

- said display is an augmented reality display, said display being preceded by a step of scanning the space monitored by the motion detector by a camera of said mobile terminal and a step of receiving information representative of the motion detector installation position;

- the method further comprises a step of receiving a direction of installation, or being installed, of said motion detector along a vertical axis of a predetermined reference frame, said direction of installation, or being installed installation, being determined by said accelerometer, and a step of displaying an indicator representative of said direction of installation or respectively during installation.

The invention also relates to a computer program comprising software instructions which, when executed by a computer, implement a validation method as defined above.

These characteristics and advantages of the invention will appear on reading the following description, given solely by way of example, and made with reference to the appended drawings, in which:

Figure 1 is a schematic representation of the motion detection system according to one embodiment of the present invention;

Figure 2 is a schematic representation of the detection zone within a space to be monitored;

FIG. 3 is a flowchart of a method for assisting the installation of a motion detector according to an exemplary embodiment of the invention.

FIG. 1 represents a motion detection system 10 according to the present invention comprising at least one motion detector 12 and one mobile terminal 14, the mobile terminal being separate from the motion detector (i.e. the mobile terminal and the motion detector are independent each other and associated respectively with different boxes). Preferably, the motion detection system 10 according to the present invention further comprises a management unit 16 that is both distinct from the motion detector 12 and from the mobile terminal 14.

According to a particular aspect, the motion detector 12 of the motion detection system 10 is mounted on a hinge (a single axis of freedom) or on a ball joint, which also makes it possible to manually modify its orientation because it is free of movement in rotation. . According to a particular variant of this aspect, the ball joint of the motion detection system 10 on which the motion detector is mounted is motorized and the motor module comprises a transceiver, not shown, configured to receive a movement command from the ball joint to modify the orientation of the motion detector 12 with respect to the vertical axis Z.

More precisely, the motion detector 12 comprises an electronic card (not shown) to which are connected a motion sensor 18, an accelerometer 20, a transmitter 22 or a transceiver 22, for example a radio transmitter 22 or a transmitter- radio receiver 22, an electronic processing unit 24 such as a microcontroller (MCU) and optionally a memory space (not shown) 18.

As shown in Fig. 1, the detection area of the motion sensor 18 is a three-dimensional detection cone, or a set of three-dimensional detection cones (not shown), the vertex of which is the installation position of the motion sensor. 18 embedded inside the motion detector 12. Such a cone, or set of detection cones, is characterized by a horizontal detection angle α in the plane (X, Y), a vertical detection angle β in the plane (Y, Z) as well as at least one P staff.

According to a particular aspect, the movement sensor 18 is a pyroelectric sensor (ie infrared movement from the English acronym PIR for passive infrared ).

According to another particular and/or complementary aspect, the motion sensor 18 has two modes of operation, one with immunity to animals (English pet immune ) and the other without immunity to animals, these two modes being activated respectively according to the direction of installation along the vertical axis Z. In other words, the vertical detection angle β in the plane (Y, Z) has an asymmetry with respect to the optical axis of the motion sensor 18 so for example that the sensor placed "head down" detects the movements of any element in contact with the ground, while the sensor placed "head up" only detects movements above a predetermined height in particular greater than the height of a pet or vice versa.

According to the present invention, the accelerometer 20 of the motion detector is configured to determine information representative of the installation position of the motion detector 12 in which it is fixed. Such an accelerometer corresponds for example to a MEMS accelerometer (English acronym for “microelectromechanical system”) the LIS2DE12 accelerometer. Such information representative of the position is relative position information corresponding to an orientation variation of the motion detector 12 with respect to a predetermined reference position. For example, such a predetermined reference position is obtained by the mobile terminal 14 by positioning it, on initialization, at the level of the motion detector 12. In other words, the position of the mobile terminal 14 at the level of the motion detector 12 is used, according to the present invention, to initialize that of the motion detector 12, and in optional addition used as the origin of the predetermined three-dimensional reference frame.

In particular, the accelerometer 20 is configured to provide an orientation variation of the motion detector with respect to the predetermined reference position within a predetermined three-dimensional reference frame, for example the X, Y, Z reference frame of FIG. 1, corresponding for example to the terrestrial reference frame. Alternatively, when the motion detector 12 is for example mounted on a ball joint, the accelerometer 20 is configured to provide information representative of the orientation of the motion detector 20 with respect to the vertical axis Z.

Furthermore, the accelerometer 20 is configured to determine the direction of installation, or during installation, of the motion detector along the vertical axis Z, namely whether the motion detector is installed "upside down" or "head up", and the motion detector 12 is configured to transmit such a direction of installation via the transceiver 22. Optionally, the accelerometer 20 is configured to determine the mode of operation of the motion sensor 18 associated in the direction of installation, or during installation, of the motion detector 12 along the vertical axis Z, and the motion detector 12 is configured to transmit such an operating mode (i.e. configuration C_C of operation of the motion sensor 18) via transceiver 22.

As an optional addition (represented by means of dashes instead of a solid line), the motion detector 12 is suitable for formatting the orientation information acquired by the accelerometer 20 prior to their transmission and/or comprises a module encryption 26 configured to encrypt the information representative of the installation position of the motion detector 12, and/or the direction of installation of the motion detector 12, prior to its/their transmission by the transmitter 22 (or the transceiver 22). The presence of such an encryption module makes it possible to secure the transmission of information representing the installation position, and/or the vertical direction of installation, of the motion detector so that it cannot be easily used by a malicious third party.

As an optional addition, the motion detector 12 is configured to transmit, via the transmitter 22, information representative of the position of installation of the motion detector, and/or the direction of installation of the motion detector, during a or more predetermined phases. By phase is meant a time window. In particular, the transmission of information representative of the installation position of the motion detector, and/or the direction of installation of the motion detector by the transmitter 22 of the motion detector 12 is configured to be activated only by installation phase and/or in the maintenance phase and/or in the mode change phase to switch from a mode with animal immunity to a standard mode or vice versa, and is deactivated outside these phases, in particular in the nominal operation. Such deactivation is in particular implemented by transmission to the transceiver 22 of a deactivation code for this type of transmission and/or by a mechanical operation, for example by using a switch, not shown, of the transmitter 22 or of the transceiver 22 making it possible to inhibit this type of transmission.

The mobile terminal 14, corresponds for example to a smartphone (English smartphone ) or to a tablet, provided with a display screen E, and a camera (not shown), and comprises in particular a transmitter- receiver 28, for example a radio transceiver 28.

In addition, the mobile terminal 14 comprises at least one display module 30 configured to display on the screen E an image I representative of the space monitored by the motion detector 12 on which at least one indicator of the detection zone of the motion detector 12 is superimposed according to the information representative of the installation position of the motion detector transmitted by the motion detector 12 and determined by the accelerometer 20.

As an optional addition, when the accelerometer 20 of the motion detector 12 is configured to determine the direction of installation, or during installation, of said motion detector 12 along the vertical axis Z, the display module 30 of the mobile terminal 14 is also configured to display on the screen E an indicator S_C of said direction of installation, or respectively during installation, such as a text message, a symbol, or even an image, representative of the direction of installation of the motion detector 12 or of the associated mode of operation.

Alternatively, instead of, or in addition to, displaying on the screen E an indicator S_C of said direction of installation or respectively during installation, the mobile terminal 14 is capable of restoring the direction of installation, or respectively in during installation, by means of an audible message corresponding directly to the direction of installation, for example "head down" or "head up" or to the associated operating mode such as "operating mode with pet immunity" versus “standard operating mode”.

The mobile terminal 14 is capable of implementing the audio and/or visual restitution of the direction of installation of the motion detector 12 or even of the associated mode of operation, before, simultaneously, after or independently of the restitution of the image. I representative of the space monitored by the motion detector on which at least one indicator of the detection zone of the motion detector is superimposed according to the information representative of the installation position of the motion detector transmitted by the detector of movement.

As an optional addition, the mobile terminal 14 comprises a module 32 for constructing the image representative of the space monitored by the motion detector on which at least one indicator of the detection zone of the motion detector is superimposed according to the information representative of the installation position of the motion detector transmitted by the motion detector 12. Such a construction module 32 corresponds according to a first variant to an augmented reality module configured to superimpose on an image actually representing the monitored space at least one virtual indicator of the detection zone of the motion detector 12.

In particular, preferably, the three-dimensional model of the detection zone of the motion sensor 18 is directly stored beforehand in a memory space of the mobile terminal 14, not shown, dedicated to the augmented reality module 32.

Alternatively, the storage of the three-dimensional model of the detection zone of the motion sensor 18 is outsourced to several servers organized in cloud computing, the three-dimensional model of the detection zone of the sensor movement 18 then being accessible and downloadable by the augmented reality module 32 of the mobile terminal 14.

For example, such an augmented reality module 32 (also called a software application) is obtained from a software development kit (SDK for the English Software Development Kit) according to the ARKit technology from Apple® or the ARCore technology from Google® and according to the present invention is configured to superimpose a virtual indicator of the detection zone of the motion detector 12 on the real image captured by the camera of the mobile terminal 14.

In particular, ARKit is a development kit allowing the detection of surfaces and objects within a real space associated with a predetermined three-dimensional reference frame, for example the X, Y, Z reference frame of figure 1, and allows virtually insert objects within an image representative of this real space.

According to the present invention, the use, for example of the ARkit kit, is specifically adapted to visualize in real time, via the mobile terminal 14, the detection zone of the motion detector 12. In this case, the user is this example suitable for scanning (i.e. scanning) the entire space to be monitored by the motion detector 12 by means of the camera of the mobile terminal 14 which it moves and places, before or after scanning, the mobile terminal 14 at the level of the motion detector 12, which initializes the predetermined reference position of the motion detector 12 then used as the origin of the predetermined three-dimensional reference frame of the ARkit kit. In other words, the position of the mobile terminal 14 at the level of the motion detector 12 is used, according to the present invention, to initialize that of the motion detector 12, and in optional addition used as the origin of the predetermined three-dimensional reference frame.

At the application level, an ARKit scene view (ARSCNView) is thus initialized, and a session launched. From the ARKit scene view, a node (i.e. point) (SCNNode), forming the detection cone corresponding to the detection zone of the motion sensor 18, is placed at the coordinates of the predetermined reference position corresponding in particular to the point origin of the repository. In particular, the apex of the cone is placed at the coordinates of the predetermined reference position. The ARKit scene view (ARSCNView) keeps a pointer (i.e. a memory reference) on the cone during the entire installation and/or maintenance phase and/or mode change to go from a mode with pet immunity to a standard mode or vice versa, such a pointer subsequently makes it possible to update the positioning of the detection zone of the motion sensor 18 in the event of movement of the latter.

The mobile terminal 14, according to the present invention, is then configured to receive, on request or not (i.e. any activity of the accelerometer 20 is automatically notified to the mobile terminal 14), the information representative of the installation position of the detector of movement 12 which, relatively with respect to the three-dimensional position of the accelerometer 20, allows, according to a particular embodiment variant, the mobile terminal 14, to deduce the three-dimensional position of installation of the movement sensor 18, or even its orientation when the motion detector 12 is for example mounted on a ball joint. From this information representative of the installation position of the motion detector 12, the three-dimensional model of the detection zone of the motion sensor 18, for example a cone or a set of cones, is imported and represented correctly in augmented reality. in the real image captured in real time by the augmented reality module 32, and the resulting image I is displayed by the display module 30. In other words, the three-dimensional model of the detection zone of the sensor of movement 18 is virtually integrated into the reality filmed by the camera of the mobile terminal 14.

It is the display module 30, or optionally the augmented reality module 32, which is able to deduce the three-dimensional installation position of the motion sensor 18, or even its orientation when the motion detector 12 is for example mounted on a ball joint from the information representative of the installation position of the motion detector 12 determined by the accelerometer 20 and transmitted by the transmitter 22 or the transceiver 22 of the motion detector 12.

When the user points the mobile terminal 14 towards the motion detector 12, the three-dimensional model of the detection zone is, for example, virtually transparently integrated into the image of the real monitored space with an indicator corresponding to a texture predetermined, for example hatched, or a predetermined color which makes it possible to easily visualize, in superposition, the detection zone of the motion sensor 18 of the motion detector 12 even though in reality this zone is invisible to the naked eye, and to modify, if necessary, the installation position of the motion detector 12 so that the detection zone corresponds to the detection needs of the user.

For example, using the ARkit of the previously mentioned augmented reality module 32, the detection cone corresponding to the detection zone of the motion sensor 18 is placed at the position (1,0,0) with respect to the origin of the three-dimensional reference frame using the following software instructions from the ARkit kit:

self.node.rotation = SCNVector4Make(1, 0, 0, -Float(Double.pi/2));

self.node.position = SCNVector3(x, y, z+0.1)

where "self" is the main class that contains the ARKit scene, "node" is the representation of the three-dimensional model of the detection zone of the motion detector (a shape of a cone for example); "rotation" and "position" are the accessors that allow the placement of the "node" within the scene and are mutable properties belonging to the three-dimensional model "node", "SCNVector4Make" and "SCNVector3" are object constructors of the SceneKit tool from the ARkit kit. An object of the SCNVector4Make type represents a vector structure with four components suitable for representing several types of data, for example here an axis-angle rotation (or torque), with a component along X equal to one, a component along Y and Z zero and a rotation angle (torque angle) equal to π radians, each component being expressed using a single-precision floating-point or floating-point value in the "Core Graphics" software framework or any other associated software framework, while that SCNVector3 represents a three-dimensional vector with three components along the X, Y and Z axes.

Advantageously, any modification of the installation position of the motion detector 12 is thus automatically visible almost instantaneously on the mobile terminal 14. More precisely, as soon as the user modifies the installation position of the motion detector 12, any change of position detected by the accelerometer 20 is notified on request or automatically to the mobile terminal 14. For example, when the mobile terminal 14 includes the augmented reality module 32 using the Apple ARkit kit, the mobile terminal 14 sends a request in the format JSON (JavaScript Object Notation) in the following form: "GET /api/sensor2/orientation" to determine the orientation of the motion detector 12 identified by the identifier "sensor2" and receives a response in the English form next:

{
"item_location": "Living room",
"item_type": "PIR sensor",
"orientation" :

{
pitch: 0.18,
roll: 0.47
}
}

This response specifying the location of the motion detector 12, namely in the living room, its type, namely based on a pyroelectric sensor and its orientation composed according to the example above of two angles the pitch angle and the roll angle expressed in degrees, or alternatively corresponding to a three-dimensional orientation vector.

Such orientation information expressed for example in the form of two angles of pitch (English pitch) and roll (English roll) are then taken into account by the mobile terminal 14 comprising the module 32 of reality augmented using Apple's ARkit to update the position of the detection zone of the motion detector 12 within the monitored space with for example the following software instruction:

self.node.rotation = SCNVector4Make(1, pitch_value, roll_value, -Float(Double.pi/2)).

In the event of movement of the motion detector 12 exceeding simple rotation, the mobile terminal 14 is capable of issuing a notification to the attention of the user to recalibrate the application by replacing the mobile terminal 14 at the level of the motion detector 12 .

As an optional addition, once the video scan of the space to be monitored has been carried out by means of the camera of the mobile terminal 14, the user is able to return with the camera to the installation location of the motion detector 12 and to select this location in pixels in the captured image, for example by tactile pressure, on the image captured by the camera. In this case, the information representative of the installation position of the motion detector 12 determined by the accelerometer 20 of the motion detector 12 makes it possible to confirm/reverse the location indicated by tactile pressure, and when the motion detector 12 is mounted on a ball joint, the information representative of the installation position of the motion detector 12 determined by the accelerometer 20 of the motion detector also makes it possible to determine the orientation of the motion detector with respect to the vertical axis Z , such an orientation making it possible to orient as precisely as possible the detection volume of the motion detector 12 thus installed within the monitored space and not being deducible from the location in pixels pointed out by tactile pressure from the user .

According to a particular optional aspect not shown, the terminal 14 comprises a module for recognizing object(s) captured by the camera and thereby determines independently and automatically (without tactile pressure from the user) the location in pixels of the motion detector in the image.

According to another particular optional aspect not shown, when the motion detector 12 of the motion detection system 10 is mounted on a motorized ball joint and the motor module associated with the ball joint comprises a transceiver not shown configured to receive a command from displacement of the ball joint to modify the orientation of the motion detector 12 with respect to the vertical axis Z, the mobile terminal 14 further comprises a motorized ball joint control-command module capable of receiving a change of orientation command of the motion detector entered by the user of the mobile terminal 14 and to transmit a command to move the ball joint intended for the transceiver of the motor module associated with the ball joint.

According to a second variant, the construction module 32 is not an augmented reality module and the image representing the monitored space is not a real representation (i.e. by real-time image capture) but a three-dimensional model of the pre-recorded monitored space within the mobile terminal 14. According to this second variant, the image construction module 32 is capable of dynamically superimposing thereon an indicator of the detection zone of the motion detector 12, the position of the indicator of the detection zone of the motion detector 12 within the three-dimensional model of the prerecorded monitored space automatically varying according to the value of the information representative of the installation position of the motion detector 12 transmitted by the movement 12.

As an optional addition, the mobile terminal 14 comprises a selection tool 34 enabling a user to enter or select from a predetermined list of models of motion detectors 12, or even of motion sensors 18, the detector model of movement 12, respectively of movement sensor 18, being installed or installed. Such a selection tool 34 is also configured to access the three-dimensional model of the detection zone of the motion sensor 18 selected, to download it if necessary and to supply it as input to the augmented reality module 32 for virtual overlay within the image of the monitored real space captured in real time by the camera of the mobile terminal 14.

According to a particular aspect, when the three-dimensional model of the detection zone of the motion sensor 18 is a set of three-dimensional detection cones, the selection tool 34 is also capable of constructing a three-dimensional outline globally surrounding such a set of detection cones. three-dimensional detection and provide only this contour as input to the augmented reality module 32 for virtual embedding within the image of the monitored real space captured in real time by the camera of the mobile terminal 14.

As an optional addition, the mobile terminal 14 comprises, when encryption is implemented on the side of the motion detector 12, a decryption module 36 configured to decrypt the information representative of the installation position of the motion detector 12 transmitted by motion detector 12.

In the example of FIG. 1, the mobile terminal 14 comprises an information processing unit 40, formed for example of a processor 42 such as a processor of the CPU ( Central Processing Unit ) type, of GPU type (from the English Graphics Processing Unit ), or VPU type (from the English Vision Processing Unit ), associated with a memory 44.

In the example of Figure 1, the display module 30, as well as optionally the augmented reality module 32, the selection tool 34, and the decryption module 36 of the mobile terminal 14 are each made under form of software executable by the processor 42.

The memory 44 of the information processing unit 40 is then capable of storing display software configured to display the image I representative of the space monitored by the motion detector on which at least one indicator of the area detection of the motion detector is superimposed according to the information representative of the installation position of the motion detector transmitted from the motion detector.

As an optional addition, the memory 44 of the information processing unit 40 is capable of storing augmented reality software configured to virtually insert a three-dimensional model of the detection zone of the motion sensor 18 into the image of space real monitored captured by means of the camera of the mobile terminal 14.

As an optional addition, the memory 44 of the information processing unit 40 is capable of storing selection software allowing a user to enter or select from a predetermined list of models of motion detectors 12, or even of motion sensors 18, the model of motion detector 12, respectively of motion sensor 18, being installed or installed.

As a further optional addition, when encryption is implemented on the side of the motion detector 12, the memory 44 of the information processing unit 40 is capable of storing decryption software capable of decrypting the information representative of the installation position of the motion detector 12 transmitted by the motion detector 12.

The processor 42 is then capable of executing the display software and in optional addition the augmented reality software, and/or the selection software and/or the decryption software.

In a variant not shown, the display module 30, as well as in optional addition the augmented reality module 32, the selection tool 34, and the decryption module 36 are each made in the form of a programmable logic component, such as an FPGA ( Field Programmable Gate Array ), or else in the form of a dedicated integrated circuit, such as an ASIC ( Application Specific Integrated Circuit ).

When at least part of the mobile terminal 14 is produced in the form of one or more software, that is to say in the form of a computer program, it is also able to be recorded on a medium, not shown, computer readable. The computer-readable medium is, for example, a medium capable of storing electronic instructions and of being coupled to a bus of a computer system. By way of example, the readable medium is an optical disc, a magneto-optical disc, a ROM memory, a RAM memory, any type of non-volatile memory (for example EPROM, EEPROM, FLASH, NVRAM), a magnetic card or an optical card. On the readable medium is then stored a computer program comprising software instructions.

According to a first embodiment, the motion detector 12 is capable of transmitting information representative of its installation position, namely its orientation relative to a predetermined and previously initialized reference position, directly to the mobile terminal 14 using a short-distance data exchange protocol (i.e. without using an entity separate from the motion detector 12 and the mobile terminal 14). For example, such a protocol is a Bluetooth® protocol, in particular Bluetooth low energy BLE or BTLE (Bluetooth Low Energy).

According to a second embodiment, the motion detection system 10 further comprises the optional management unit 16 distinct from the motion detector 12 and distinct from the mobile terminal 14 (i.e. respectively in three different and separate respective boxes), and the information representative of the installation position of the motion detector 12 is transmitted periodically or each time the motion detector 12 moves, by the motion detector 12 to the management unit 16. In other words, according to this second embodiment the detector movement 12 and the mobile terminal 14 are unable to communicate with each other directly.

Such a management center 16 corresponds for example to a central management of an alarm system (i.e. of a surveillance system), to a central management of a lighting system, to a central management of opening/closing of access to a home or even preferably to an IoT (Internet of Things) gateway of an Internet access provision service.

The management unit 16 is for example connected via a first type of link to one or more motion detector(s) 12, for example a wired link, or a wireless link using a first communication protocol (e.g. by current carrier online), and connected to the mobile terminal 14 via a second communication protocol, for example WiFi.

Preferably, the management unit 16 and the motion detector 12 are connected by a wireless link, for example on the 868 MHz or 2.4 GHz band by means of a communication protocol (DomusRF, Zigbee, etc.)

According to this second embodiment, the management unit 16 acts as an intermediary between the motion detector 12 and the mobile terminal 14, which makes it possible to avoid the presence of two distinct means of communication, one dedicated to the communication with the central management 16 and one dedicated to communicating with the mobile terminal 14, in the motion detector 12 anyway connected to the central management 16 in case of motion detection.

To do this, the management unit 16 comprises a transceiver 46 capable of receiving information representative of the position of installation of the motion detector 12, and/or the direction of installation of the motion detector 12, transmitted by the transmitter 22 or the transceiver 22 of the motion detector 12. In addition, the transceiver 46 of the management unit 16 is also capable of retransmitting, in particular on periodic request from the mobile terminal 14, in particular by using a REST (Application Programming Interface representation state transfer) API application, or on its own initiative in the event of a change in the orientation of the motion detector 12, the information representative of the installation position of the motion detector 12 namely its orientation, and/or the direction of installation of the motion detector 12 towards the mobile terminal 14.

Such a management unit 16 is in particular suitable for receiving and centrally storing in a dedicated memory space 48, each piece of information representing the installation position and/or the installation direction of a plurality of distributed motion detectors for example within the same room, especially in the case of a large room to be monitored (i.e. greater than the detection range P of a single motion detector), or distributed within the same dwelling or the same building.

In this case, the management unit 16 is able to associate with each piece of information representative of the installation position and/or the direction of installation of a motion detector an identifier also known to the user of the mobile terminal 14 in order to that the latter can access such information on request via the mobile terminal 14 by entering said identifier.

According to a variant embodiment mentioned above, the image representing the monitored space is not a real representation (i.e. by real-time image capture) but a three-dimensional model of the monitored space pre-recorded within the control unit. management 16 then comprising an image construction module 50 suitable for dynamically superimposing thereon an indicator of the detection zone of the motion detector 12, the position of the indicator of the detection zone of the motion detector 12 within the three-dimensional model of the pre-recorded monitored space automatically varying according to the value of the information representative of the installation position of the motion detector 12 transmitted by the motion detector 12.

The resulting image I provided by the building module 50 of the management center 16 is then transmitted to the mobile terminal 14 by the transceiver 46 of the management center 16.

When the central management retransmits the information representative of the installation position of the motion detector 12, and/or the direction of installation of the motion detector 12 to the mobile terminal 14, the central management 16 optionally comprises a module encryption device 52 configured to encrypt the information representative of the installation position of the motion detector 12, and/or the direction of installation of the motion detector 12, received from the motion detector 12 before retransmission to the mobile terminal 14 by the radio transceiver 46 of the management center 16. In other words, according to this aspect the management center 16 also supports the encryption aspect for its radio link with the mobile terminal 14, which does not dispense with integrate the encryption module 26 within the motion detector 12 for a wireless link between the motion detector 12 and the management unit 16.

Alternatively, when encryption is implemented on the side of the motion detector 12, the management unit 16 comprises a decryption module 54 configured to decrypt the information representative of the installation position of the motion detector 12, and/or the direction of installation of the motion detector 12, transmitted by the motion detector 12, in particular with a view to subsequent use of this or these information(s) representative of the position of installation of the motion detector 12, and/or the direction of installation of the motion detector 12 by the image building module 50.

According to an aspect not shown, the central management unit 16 comprises an information processing unit, formed for example of a processor such as a processor of the CPU type ( Central Processing Unit ), of the GPU type (from the English Graphics Processing Unit ), or of the VPU type (from the English Vision Processing Unit ), associated with a memory comprising in particular the aforementioned dedicated memory space 48. The optional image construction 50, decryption 52 and decryption 54 modules of the management unit 16 are each produced in the form of software that can be executed by the processor (not shown) of the management unit 16. The memory ( not shown) of the information processing unit (not shown) of the management center 16 is then optionally capable of storing construction, and/or encryption and/or decryption software. The processor (not shown) of the management unit 16 is then optionally capable of executing the image construction software, and/or the encryption software, and/or the decryption software.

In a variant not shown, the optional image construction 50, decryption 52 and decryption 54 modules of the management unit 16 are each made in the form of a programmable logic component, such as an FPGA (from the English Field Programmable Gate Array ), or else in the form of a dedicated integrated circuit, such as an ASIC (from the English Application Specific Integrated Circuit ).

When at least a part of the management unit 16 is produced in the form of one or more software, that is to say in the form of a computer program, it is also capable of being recorded on a support, not shown, readable by computer. The computer-readable medium is, for example, a medium capable of storing electronic instructions and of being coupled to a bus of a computer system. By way of example, the readable medium is an optical disc, a magneto-optical disc, a ROM memory, a RAM memory, any type of non-volatile memory (for example EPROM, EEPROM, FLASH, NVRAM), a magnetic card or an optical card. On the readable medium is then stored a computer program comprising software instructions.

For purposes of illustration, FIG. 2 schematically represents the detection zone of the motion detector 12 within a space to be monitored 56. As illustrated by FIG. 2, the detection zone of the motion detector 12 presents a coverage three-dimensional 58.

According to a particular and/or complementary aspect illustrated by FIG. 2, the motion sensor of the motion detector 12 has an asymmetry with respect to its optical axis A so that the vertical detection angle in the plane (Y, Z) associated with zone 60 is different from the vertical detection angle in the plane (Y, Z) associated with zone 62. According to this aspect, a reversal of the direction of installation along the vertical axis Z of the motion detector 12 will produce a variation of the detection coverage 58 obtained. According to the present invention, two modes of operation, one with immunity to animals and the other without immunity to animals, are respectively associated with the direction of installation along the vertical axis Z of the motion detector 12.

The operation of the mobile terminal 14 according to an exemplary embodiment of the invention will now be described with the aid of FIG. 3 illustrating a flowchart of the method 64 for assisting in the installation of the motion detector 12.

According to a first optional step 66, the mobile terminal 14, placed at the level of the motion detector 12 is manipulated, for example according to a 90° rotation, so that the camera which it comprises captures the images associated with the monitored space. In other words, according to this step 66, a video scanning (scan) of the monitored space is implemented by means of the camera of the mobile terminal 14. In addition, such a placement of the mobile terminal 14 at the level of the motion detector 12 allows to initialize a reference position of the motion detector 12 subsequently used as the origin of the predetermined three-dimensional reference frame.

According to another optional step 68, the mobile terminal 14 is used by the user to select from a predetermined list of motion detector models 12, or even motion sensors 18, the motion detector model 12, respectively motion sensor 18, being installed or installed. In other words, according to this optional step 68, the selection tool 34 of the mobile terminal 14 is used by the user.

According to step 70, the mobile terminal 14 receives via its transceiver 28 at least one element allowing the subsequent display of the representative image I of the space monitored by the motion detector on which at least one indicator of the detection area of the motion detector is superimposed according to the information representative of the installation position of the motion detector transmitted from the motion detector, and/or the subsequent display of an indicator representative of the direction of installation , or respectively during installation of the motion detector.

According to a first variant 72 of step 70, this element corresponds directly to the information I.P representative of the installation position of the motion detector transmitted by the motion detector 12, namely its orientation. Such information I.P representative of the installation position of the motion detector transmitted by the motion detector 12 is either transmitted directly by the motion detector 12 when the motion detector 12 and the mobile terminal 14 are able to communicate directly without intermediary , or transmitted by the central management 16 when the motion detector 12 and the mobile terminal 14 are unable to communicate directly without the intermediary of the central management 16.

According to a second variant 74 of step 70, this element corresponds directly to the representative image I of the space monitored by the motion detector on which at least one indicator of the detection zone of the motion detector 12 is superimposed in function of the information representative of the installation position of the motion detector 12 transmitted by the motion detector 12, such an image I having been constructed and transmitted by the management unit 16.

According to a third variant 76 of step 70, this element corresponds directly to the configuration mode C_C of the motion sensor 18, namely with immunity to animals or without, such a mode being obtained from the direction of installation of the motion detector. movement 12.

According to a fourth variant 78 of step 70, this element corresponds to the direction S of installation of the motion detector 12 along a vertical axis.

According to an optional step 80, following reception 70, an image construction step 80 is implemented by the mobile terminal 14 via the image construction module 32. Such an optional step 80 is notably implemented by the mobile terminal 14 when, as an alternative, this construction step 80 is not implemented by an optional management unit 16. In other words, such an optional construction step 80 is implemented by the mobile terminal 14 when the mobile terminal 14 does not directly receive, according to sub-step 74, the representative image I of the space monitored by the motion detector 12 on which at least one indicator of the detection zone of the motion detector 12 is superimposed according to the information representative of the installation position of the motion detector 12.

Such a step 80 is preferably implemented by the mobile terminal 14, in particular implemented via the augmented reality module 32 using the ARkit kit has the advantage of building a real representation making the experience of installing the detector immersive. movement 12 of the user.

According to step 82, the mobile terminal 14 displays on the screen E via the display module 30 information relating to the detection implemented by the motion detection module 12. Such a step 82 comprises a sub-step 84 display A_I of the image I representative of the space monitored by the motion detector on which at least one indicator of the detection zone of the motion detector is superimposed according to the information representative of the position of installation of the motion detector transmitted by the motion detector, and/or a sub-step 86 of displaying A_S_C of an indicator representative of the direction of installation, or respectively being installed, of the motion detector 12, a such an indicator corresponding directly to the direction of installation or associated mode of operation.

It should be noted that the optional step 68 is capable of being implemented before, after or independently of the optional steps of scanning 66 and construction 80 and is not implemented when the mobile terminal 14 receives directly according to the sub - step 74 the representative image I of the space monitored by the motion detector 12 on which at least one indicator of the detection zone of the motion detector 12 is superimposed according to the information representative of the installation position motion detector 12.

In addition, the mobile terminal 14 is capable of implementing the reproduction according to step 86, sound and/or visual, of the direction of installation of the motion detector 12 or even of the associated mode of operation, previously, simultaneously, subsequently or independently of the restitution 84 of the image I representative of the space monitored by the motion detector on which at least one indicator of the detection zone of the motion detector is superimposed according to the information representative of the position of installation of the motion detector transmitted by the motion detector.

According to a step not shown, in the event of movement of the motion detector 12 exceeding simple rotation, the mobile terminal 14 is capable of issuing a notification to the attention of the user to re-calibrate the application by replacing the mobile terminal 14 at the motion detector 12. The method 64 is then restarted.

It is thus conceivable that the motion detection system 10 according to the present invention facilitates an autonomous installation of a motion detector, any modification of the installation position of the motion detector 12, in fact modifying the position of the detection zone in the monitored space 56, being according to the present invention visible on the screen E of the mobile terminal 14, which allows precise positioning of the detection zone while conforming to the needs of the user, in particular to avoid detecting the pet movements.

Claims (15)

A motion detection system (10) comprising a motion detector (12), the motion detector (12) comprising a motion sensor (18) associated with an accelerometer (20), the accelerometer (20) being configured to determine information representative of the installation position of the motion detector (12),
the motion detection system further comprising a mobile terminal (14), distinct from the motion detector (12), configured to display an image representative of the space monitored by the motion detector (12) on which at least one indicator of the detection area of the motion detector is superimposed according to the information representative of the installation position of the motion detector (12) transmitted from the motion detector (12). System (10) motion detection according to claim 1 wherein the motion sensor (18) is a pyroelectric sensor. System (10) motion detection according to claim 1 or 2, further comprising a management unit (16) distinct from the motion detector (12) and distinct from the mobile terminal (14), and in which the information representative of the installation position of the motion detector motion (12) is transmitted by the motion detector (12) to the management center (16). System (10) motion detection according to claim 3, in which the management unit (16) is configured for:
- retransmit the information representative of the installation position of the motion detector (12) to the mobile terminal (14), or
- constructing said representative image of the space monitored by the motion detector on which at least one indicator of the detection zone of the motion detector is superimposed and transmitting it to the mobile terminal (14). System (10) motion detection according to claim 1 or 2, wherein the information representative of the installation position of the motion detector is transmitted by the motion detector (12) directly to the mobile terminal (14) using a data exchange protocol to short distance. System (10) motion detection device according to any one of the preceding claims, in which the motion detector (12) is configured to encrypt said information representative of the installation position of the motion detector (12) prior to its transmission. System (10) motion detection device according to any one of the preceding claims, in which the motion detector (12) is configured to transmit said information representative of the installation position of the motion detector (12) during one or more predetermined phases . System (10) motion detection device according to any one of the preceding claims, in which the mobile terminal (14) comprises a camera capable of scanning the space monitored by the motion detector (12), and in which the mobile terminal (12) is configured to display in augmented reality said image representative of the space monitored by the motion detector (12) on which at least one indicator of the detection zone of the motion detector is superimposed. System (10) Motion detection sensor according to any one of the preceding claims, in which the detection zone is a cone whose vertex is the installation position of the motion sensor (18). System (10) motion detection device according to claim 9, wherein the motion detector (12) comprises at least one memory space configured to store a three-dimensional model of said cone. System (10) A motion detector according to any preceding claim wherein the accelerometer (20) is further configured to determine the direction of installation, or being installed, of said motion detector (12) along a vertical axis from a predetermined frame of reference and in which the mobile terminal (14) is furthermore configured to display an indicator representative of said direction of installation, or respectively during installation, transmitted by the motion detector (12). Method (64) for assisting the installation of a motion detector (12) implemented by a mobile terminal (14) separate from the motion detector (12), the motion detector (12) comprising a movement (18) associated with an accelerometer (20), the accelerometer (20) being configured to determine information representative of the installation position of the movement detector (12), the method comprising at least the display (82) of an image representative of the space monitored by the motion detector (12) on which at least one indicator of the detection zone of the motion detector (12) is superimposed according to the information representative of the position of installation of the motion detector (12) transmitted by the motion detector (12). Method (64) according to claim 12 wherein said display (82) is an augmented reality display (82), said display being preceded by a step of scanning (66) the space, monitored by the motion detector ( 12), by a camera of said mobile terminal (14) and a step (70) for receiving information representative of the installation position of the motion detector. Method (64) according to claim 12 or claim 13 further comprising a step of receiving (78) a direction of installation, or being installed, of said motion detector along a vertical axis of a predetermined reference , said direction of installation, or being installed, being determined by said accelerometer (20), and a step of displaying (86) an indicator representative of said direction of installation or being installed respectively. A computer program comprising software instructions which, when executed by a computer, implement a method according to any one of claims 12 to 14.