Classifications

• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B15/00—Systems controlled by a computer
  • G05B15/02—Systems controlled by a computer electric
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Program-control systems
  • G05B19/02—Program-control systems electric
  • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
  • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
  • G05B19/0426—Programming the control sequence
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B2219/00—Program-control systems
  • G05B2219/20—Pc systems
  • G05B2219/26—Pc applications
  • G05B2219/2642—Domotique, domestic, home control, automation, smart house
• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B13/00—Burglar, theft or intruder alarms
  • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
  • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
  • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
  • G08B13/191—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using pyroelectric sensor means

Definitions

• TITLE Method and device for home automation control with presence and proximity event detection
• the technical field of the invention is that of the management of spaces by a home automation control device comprising the detection of presence and proximity events.
• the present invention relates to a method and a home automation control device with presence and proximity event detection, in particular for managing spaces in hotels.
• Home automation control devices with presence event detection comprising a control screen and a presence detection sensor, that is to say making it possible to detect a person several meters away, so that the home automation control device can launch programs in the room. This is particularly the case for home automation devices in hotels to start the air conditioning, and turn on the light when a person enters a hotel room.
• It is also known home automation control devices with proximity event detection comprising a proximity detection sensor, that is to say detection of a person a few centimeters from the sensor, to produce a signal control of an internal or external device.
• the control signal from an internal device can be, for example, to turn on the screen of the control device, and the control signal to an external device can be, for example, a control of lights or even of a means of door opening.
• the invention offers a solution to the problems mentioned above, by making it possible to use a single heat motion sensor of the infrared pyroelectric type, also called PIR, to detect an event and identify whether the event is at a distance of presence event and/or a proximity event distance.
• a single heat motion sensor of the infrared pyroelectric type also called PIR
• a home automation control device comprising: a pyroelectric infrared heat motion sensor producing an analog signal, a man/machine interface comprising control interfaces and information interfaces, a light device (diodes or screen) for illuminating the man/machine interface, a control unit comprising an input for receiving the analog signal from the heat movement sensor, the control unit comprising: a first line connected to the input of the control unit for receiving the analog signal from the heat motion sensor, comprising a first amplifier and filter stage and an analog-to-digital converter, connected together in series to process and convert the analog signal from the heat motion sensor movement of heat into a first corresponding processed digital signal, a second line comprising a second stage of amplification and filtering, and an analog-to-digital converter, connected together in series to convert the received analog signal into a second processed digital signal, a first comparator arranged to compare the value of the first processed digital signal with a first threshold, a second comparator arranged to compare the value of the second
• the home automation device comprises only one heat movement sensor that can detect a proximity event and a presence event and separate these two detections according to the signal received by the heat sensor. heat movement.
• the infrared pyroelectric type heat movement sensor makes it possible to operate in a home automation device comprising a solid front (without hole), for example, a vitrified wall of a touch screen.
• An infrared pyroelectric sensor uses the pyroelectric effect of ceramics by absorbing the infrared rays emitted by the human body and produces an analog signal according to these absorbed infrared rays. It is a heat movement sensor and not a motionless presence sensor.
• the infrared pyroelectric sensor is sensitive to far infrared waves, i.e. it is able to perceive the heat radiation emitted in its environment. It equilibrates slowly with respect to the temperature configuration that it perceives in its field of action and is activated by any rapid temperature variation, however small, with respect to this equilibration.
• This type of sensor is not configured to measure a distance, unlike other distance sensors such as proximity meters or rangefinders. This type of sensor can therefore detect a proximity event if a hand or human passes through the detection fields of the sensor and can also have a lens to detect a presence event several meters away.
• a movement causes an analog signal variation, more or less great depending on the distance and the speed of the movement.
• the variation of analog signal will be more or less important according to the distance of the person.
• the first stage of amplification and filtering makes it possible to amplify this signal variation and to process the noises of the analog signal coming from the sensor in order to calibrate the signal from the sensor and the analog-to-digital converter transforms the analog signal into a digital value to obtain a value greater than or equal to the first if the processed signal variations are significant enough for the analog signal variation to be considered as a proximity event.
• the fact of using the second line makes it possible to amplify and filter the signal (which can already be filtered and amplified by the first stage of amplifier and filtering) to calibrate the signal by amplifying the analog signal of the sensor and to obtain a digital value higher by the converter or equal to a predetermined value if the variations of signals processed are sufficiently large.
• An analog-to-digital converter CAN allows a processor to perform high-order algorithmic calculations on the digital values that represent the analog signal. Without the numerical values, it is very difficult to determine the event. Additionally, the analog signal supplied to the control unit will contain noise from infrared rays unrelated to the motions of the event, such as those emitted by a radiator between the moving target and the sensor, a window, etc.
• the CAN digital analog converter allows the calculation of the average of the first processed analog signal (proximity) and of the second processed analog signal (presence) over a certain time thanks to the use of a low pass filter to keep a continuous component of the signal. .
• the device of home automation control therefore does not use the pyroelectric infrared motion sensor to measure a distance but to measure a movement and to differentiate whether the movement is in a short distance range or a long distance range.
• the analog-to-digital converter therefore produces the first and second processed digital signals each comprising a digital value comparable to a threshold value by the corresponding comparator.
• the control unit can control external and/or internal home automation devices according to the signal from the sensor according to its digital value processed and amplified differently and compared with thresholds corresponding to a proximity event and a presence event.
• the home automation control device may have one or more additional features from among the following, considered individually or in all technically possible combinations:
• the second stage is connected to the output of the first stage so that the output signal from the first stage is amplified and filtered by the second stage.
• the combination of amplification by the first stage of amplification and filtering and the second stage of amplification and filtering allows a greater and less costly amplification gain, thus making it possible to calibrate the analog signal from the sensor for the analog-to-digital converter in order to that a second processed signal can be transformed into a digital value by the analog-to-digital converter.
• the processing by the second amplification and filtering stage of the first processed signal comprises an amplifier sufficient for the total amplification of the first and second amplification and filtering stages to be between 60db and 80db, for example 68db.
• the first threshold is a digital value corresponding to the first digital signal processed after a variation of the analog signal from the sensor during a heat movement of a human at a first predetermined distance
• the second threshold is a digital value corresponding to the second digital signal processed when a variation of the analog signal of the sensor corresponding to heat movement of a human at a second predetermined distance greater than the first predetermined distance.
• the first predetermined distance corresponds to twenty centimeters and the second first predetermined distance corresponds to 4.5 m.
• the processing by the first amplification and filtering stage of the analog signal at the output of the infrared pyroelectric type heat motion sensor is between 25db and 45db, for example it is 33db.
• control unit is configured to detect a presence event alone when the value of the first digital signal processed is lower than the first threshold corresponding to a proximity event and the value of the second digital signal treated is greater than or equal to the second threshold.
• control unit is configured to launch a scenario or transmit a command to an external home automation device when the presence event alone has been detected.
• control unit is configured for, when the first digital signal is greater than or equal to the first threshold corresponding to a proximity event and the second digital signal is greater than or equal to the second threshold, launch a scenario or transmit a command to an external home automation device different from the control signal transmitted to an external home automation device when the presence event alone has been detected.
• the first amplifier and filter stage comprises an amplifier and an analog filter in series one after the other, the first amplifier and filter stage is located electrically between the motion sensor heat sink and the analog-to-digital converter, the second amplifier and filter stage includes an amplifier and an analog filter in series one after the other and in that this second amplifier and filtering stage is located electrically between the filter of the first amplifier and filtering stage and an input of the analog-to-digital converter.
• the piroelectric infrared sensor can provide an analog signal having an amplitude of approximately 1 mv.
• the second stage of amplification and filtering in series with the first stage thus allows to have a high gain (for example 72db) for the motion detection part and the first stage is sufficient to process the signal from the sensor when the signal variation corresponds to a change in close heat (less than a first predetermined distance for example 20cm ) to be converted by the analog-to-digital converter.
• the second amplification and filtering stage is a digital filter located after the analog-to-digital converter produced by software implemented by a microcontroller and a memory of the home automation device.
• the software is implemented in a firmware of the home automation device.
• the first stage of analog amplification and filtering converts for the analog-to-digital converter which is then digitally amplified.
• the pyroelectric infrared heat motion sensor is passive. This makes it possible to expend very little energy and also to be able to transform the infrared rays received through glazing.
• the control unit comprises a microcontroller comprising the analog-to-digital converter of the first line and of the second line.
• the microcontroller comprises a processor forming the first and second comparator.
• control unit comprises a first microcontroller forming the analog-to-digital converter of the first line and a second microcontroller forming the analog-to-digital converter of the second line.
• the first amplifier and filtering stage comprises a low-pass filter to perform the filtering.
• the second amplifier and filtering stage comprises a low-pass filter to perform the filtering.
• the home automation control device comprises a touch screen comprising the luminous device and at least part of a control surface of the man/machine interface for transmitting usual information to a user and transmitting control information to the control unit by the user.
• the home automation control device comprises a front face comprising the control surface of the man/machine interface comprising a glazed surface forming the touch surface of the touch screen and a transparent part infrared rays emitted by a human, the heat movement sensor being opposite this transparent part of the glazed surface.
• the man/machine interface may comprise glazing and buttons passing through the glazing.
• the man/machine interface may comprise glazing and touch sensors.
• the front face may in this example be a flat surface.
• the home automation control device comprises a front face comprising an interface control surface man/machine and a part transparent to infrared waves allowing the heat movement sensor to capture infrared waves.
• the home automation control device comprises a front face and the infrared pyroelectric type heat movement sensor is mounted facing a glass or resin glazing forming at least a part of the front face, through which infrared radiation can pass, the infrared pyroelectric type heat motion sensor producing an analog signal proportional to changes in infrared rays passing through the glazing.
• the glazing may be a glass or resin pane allowing the infrared rays to pass.
• the home automation control device comprises a recessed box to be mounted in a wall and the glazing of the front face forms a control surface of the man / machine interface, covering the recessed box completely.
• the glazing may include part of a touch screen.
• the device comprises a lens for infrared pyroelectric sensor. This increases the detection distance.
• control signal to an external home automation device is a specific home automation control signal for a device from among the heating, air conditioning, light.
• control unit comprises a memory comprising a program for a home automation scenario and in that the control unit launches the home automation scenario when the value of the second digital signal is greater than or equal to the second threshold corresponding to a presence event by transmitting command signals at different times to one or more external home automation devices.
• Another aspect of the invention relates to a method for home automation control of a home automation control device according to the first aspect of the invention with or without the different characteristics of one or more embodiments described, comprising the steps : detecting an analog signal at the output of an infrared pyroelectric type heat motion sensor, a first processing of the analog signal at the output of the infrared pyroelectric type heat motion sensor by a first amplification stage and filtering, to obtain a first processed analog signal, of a second processing of the first processed analog signal by a second stage of amplification and filtering, to obtain a second processed analog signal for converting the first processed analog signal into a first digital signal comprising a digital value, for converting the second processed analog signal into a second digital signal comprising a digital value, for comparing the first digital signal with a first threshold, for comparing the second digital signal with a second threshold, for controlling a light device when the value of the first digital signal is greater than or equal to the first threshold, producing and sending a control signal for an external home
• the step of converting the first processed analog signal into a first digital signal comprises a sub-step: of calculating the average of the output of the first stage over a certain time by using a low-pass filter to obtain a first DC component of the signal, for measuring a first noise by comparing the minimum value and the maximum value of the first processed signal, of determining the digital value of the first signal, as a function of the first noise measured and of the first DC component of the signal
• the step of converting the second processed analog signal into a second digital signal comprises the sub-steps: of calculating the average of the output of the second stage for a certain time using a low pass filter to obtain a second DC component of the signal, measuring a second noise by comparing the minimum value and the maximum value of the second processed signal, determining the numerical value of the second signal as a function of the second noise measured and of the second continuous component of the signal.
• FIG. 1 shows a schematic representation of a home automation control device according to one embodiment of the invention.
• FIG. 2 shows a schematic view of a control panel of a home automation control device according to an example of the embodiment of the invention.
• FIG. 3 shows a schematic representation of heat motion detection.
• FIG. 1 shows a representation of a block diagram of a home automation control device D according to a first embodiment.
• the home automation control device D comprises a heat movement sensor 1 of the infrared pyroelectric type, producing an analog signal 10.
• the analog signal 10 has, in this example, an amplitude of approximately 1 mv.
• the heat movement sensor 1 is capable of perceiving the heat radiations emitted in its environment.
• the heat movement sensor 1 may comprise a balancing configuration for a predetermined period with respect to the temperature configuration it perceives in its field of action and then activates by any rapid temperature variation, however small, with respect to this balancing configuration by transmitting an analog signal.
• the home automation control device D comprises, in this example, a flush-mounting box 9 to fit into a wall such as a wall of a room, for example a hotel room.
• the home automation control device D comprises a man/machine interface 7 comprising control interfaces 70, 72, 73, 74, 75 and information interfaces 71, 720 represented in a figure 2.
• the man/machine interface 7 comprises a wall which covers the flush-mounting box 9 to allow only one front face of the home automation control device D to be seen.
• This front face comprises the control surface of the man/machine interface 7.
• the heat movement sensor 1 is therefore mounted opposite a part 79 of the wall of the front face, thus comprising a glazing which can be made of glass or resin to allow the infrared radiation to pass.
• the home automation control device D comprises a light device 6 to illuminate the control face 7.
• the light device 6 can be a screen or diodes and the man/machine interfaces of the control face 7 can be buttons for control (dimmer or switch) or touch sensors.
• the control face 7 can therefore include control buttons passing through its wall, but in this example the control face 7 comprises a flat control surface comprising glazing and touch sensors performing the man/machine control interface function.
• the home automation control device D comprises a touch screen 76 forming the light device 6 and part of the control surface of the man / machine interface 7, but could understand the entire surface of the man/machine interface 7.
• FIG. 2 schematically represents an example of the front face comprising the surface of the touch screen 76 and the part 79.
• the surface of the touch screen 76 is therefore a control surface of the man/machine interface 7, the controls of which can change according to the display control and touch control of the touch screen 76.
• the part of the control surface of the man/machine interface 7 formed by the touch screen 76 of the home automation control device D can comprise an on/off touch control interface 70, an interface of information displaying ventilation or air conditioning 71, a heating touch control interface 72 with a temperature information interface 720, a concierge call touch control interface 73, a touch control interface for controlling a warning light a do not disturb door 74, a cleaning request touch control interface 75.
• this display is an example and may change according to different display scenarios.
• the home automation control device D can comprise a means of communication such as an antenna and a wifi communication module (not shown) to allow a service to be called, such as the concierge or the cleaning service of a hotel, or even control an external home automation device 8 such as a radiator or an air conditioning or ventilation unit, an external door light, etc.
• a service such as the concierge or the cleaning service of a hotel
• an external home automation device 8 such as a radiator or an air conditioning or ventilation unit, an external door light, etc.
• the part 79 of the wall forming the flat surface of the front face may comprise a menu control interface touch sensor 77 of the man/machine interface 7.
• the front face of the home automation control device D is therefore one face of a glazing of the touch screen 76 and of the part 79 mounted opposite the heat movement sensor 1 to capture the infrared waves passing through the glazing.
• Glazing can be glass or resin.
• a wavelength of a human body, at 37° C. therefore 310 K, emits radiation with a wavelength of about 10 ⁇ m (medium infrared), and the heat movement sensor 1 is therefore arranged to detect changes or variation of infrared waves through the glazing.
• the home automation control device D further comprises a control unit 2 comprising an input for receiving the analog signal 10 from the heat movement sensor 1.
• the control unit 2 communicates with the display screen 76 to send him information or receive information, by sample order.
• the control unit 2 and the display screen 76 can be formed by a single block.
• the control unit 2 comprises a first line comprising a first stage of amplification and filtering 3 and an analog-digital converter 50, connected together to receive the analog signal 10 from the heat movement sensor 1.
• the first stage of amplification and filtering 3 is upstream of the analog-digital converter 50, and filters the analog signal 10 of the heat movement sensor 1 into a first processed analog signal 310.
• the first stage of amplification and filtering 3 comprises an amplifier 30 and a filter 31 in series with each other, and in particular the amplifier 30 is upstream of the filter 31.
• the filter 31 is for example a band pass filter to suppress noise in the analog signal amplified by the amplifier 30 and thus have the processed (amplified and filtered) analog signal 310 at the output.
• the analog-to-digital converter 50 therefore receives in a first analog input the first processed analog signal 310 to convert it into a first processed digital signal 501 having a value.
• the control unit 2 further comprises a second line comprising a second amplification and filtering stage 4, and the analog-to-digital converter 50, connected together in this embodiment to the first line to receive the filtered analog signal.
• the second amplification and filtering stage 4 is upstream of the converter 50.
• the second amplification and filtering stage 4 comprises an amplifier 40 and a filter 41 in series with each other.
• amplifier 40 is upstream of filter 41.
• the amplifier 40 receives and amplifies the first processed analog signal 310 by the amplifier 4, the amplified signal is filtered by the filter 41 which is for example band pass to remove noise in the first processed analog signal 310 amplified by the amplifier 40 and thus have at output a second processed analog signal 410.
• the analog converter 50 therefore receives in a second analog input the second processed analog signal 410 to convert it into a second processed digital signal 502 having a value.
• the control unit 2 further comprises a first comparator 51 connected to an output of the first line to receive the first processed digital signal 501 .
• the first comparator 51 compares this first processed digital signal 501 with a first threshold S1 and produces a proximity event signal 510 when the value of the first processed digital signal 501 is greater than the first threshold S1.
• the first threshold S1 can be parameterized by the man/machine interface 7 but can also be implemented by a remote man-machine interface.
• a remote man-machine interface this can be achieved by plugging into a connector of the home automation control device D or can be connected wirelessly to the home automation control device D, in which case the home automation control device D includes a means of wireless communication, for example wifi.
• the remote man-machine interface can be that of a device such as a smartphone (telephone with touch screen) or a computer or a tablet.
• the control unit 2 further comprises a second comparator 52 connected to an output of the second line to receive the second processed digital signal 502.
• the second comparator 52 compares this first processed digital signal 502 with a first threshold S2 and produces a presence event signal 520 when the value of the second processed digital signal 502 is greater than the second threshold S2.
• the first threshold S1 can be configured by the man/machine interface 7 like that of the first threshold, but can also be implemented by the remote man-machine interface described above.
• the first threshold S1 is a digital value corresponding to the first processed digital signal 501 after a variation of the analog signal 10 of the heat movement sensor 1 corresponding to a heat movement of a human at a first predetermined distance D1, ( shown in Figure 3).
• the control unit 2 comprises a calculation unit 22 comprising a memory 21 and a microprocessor 5 configured to control and receive the instructions between the man-machine interface 7 and control programs of the control unit 2 memorized in memory 21 .
• a program for displaying a menu is displayed on the touch screen, when the menu control interface touch sensor 77 detects a pressure, the displayed menu comprising a tab for choosing, for example, the first predetermined distance D1 and the microprocessor 5 calculation or determines using a database in the memory 21 the first threshold S1.
• the second threshold S2 is a digital value corresponding to the second processed digital signal 502 during a variation of the analog signal 10 of the heat movement sensor 1 corresponding to a heat movement of a human at a second predetermined distance D2 greater than the first predetermined distance D1.
• Figure 3 shows a schematic example of heat motion detection.
• the home automation control device D has, in this example, its recessed box 9 embedded in a wall M.
• the first predetermined distance D1 corresponds to twenty centimeters and the second first predetermined distance D2 corresponds to 4.5 m.
• the analog signal 10 from the heat movement sensor 1 will include a signal variation or a signal corresponding to this variation and the first line will produce the first processed digital signal 501 having a value greater than the first threshold S1 but the second line will produce the second processed digital signal 502 also having a value greater than the second threshold S2.
• a proximity event 51 1 there is by definition a presence event 521.
• the control unit 2 is configured to transmit a control signal to the light device 6 when the value of the first processed digital signal 501 is greater than or equal to the first threshold S1, that is to say a signal of proximity event 510 at the output of the first comparator 51 corresponding to a proximity event 51 1 .
• the control unit 2 can be configured to transmit a control signal to an external home automation device 8 when there is a presence event signal 520 at the output of the second comparator 52 corresponding to a presence event 521 .
• the control unit 2 can also be configured to detect a presence event only 522 when there is only a presence event signal presence 520 at the output of the second comparator 52, that is to say when the value of the first processed digital signal 501 is lower than the first threshold S1 and the value of the second processed digital signal 502 is greater than or equal to the second threshold S2 .
• the control unit 2 can thus be configured to launch a scenario or transmit a command to an external home automation device 8 when the presence event only 521 has been detected.
• the control unit 2 can remain inactive when the value of the first processed digital signal 501 is less than the first threshold S1 and the value of the second processed digital signal 502 is less than or equal to the second threshold S2. Unless specified otherwise, the same element appearing in different figures has a single reference.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Automation & Control Theory (AREA)
• General Engineering & Computer Science (AREA)
• Geophysics And Detection Of Objects (AREA)
• Electronic Switches (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2021
  • 2021-12-21 FR FR2114091A patent/FR3131017B1/fr active Active
• 2022
  • 2022-12-20 WO PCT/EP2022/086868 patent/WO2023118057A1/fr not_active Ceased
  • 2022-12-20 EP EP22836265.3A patent/EP4453673A1/de active Pending

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