EP3682205A1 - Device for analysing infrared radiation from a surface of a motor vehicle passenger compartment - Google Patents
Device for analysing infrared radiation from a surface of a motor vehicle passenger compartmentInfo
- Publication number
- EP3682205A1 EP3682205A1 EP18793702.4A EP18793702A EP3682205A1 EP 3682205 A1 EP3682205 A1 EP 3682205A1 EP 18793702 A EP18793702 A EP 18793702A EP 3682205 A1 EP3682205 A1 EP 3682205A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- passenger compartment
- motor vehicle
- infrared radiation
- infrared
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 65
- 238000004458 analytical method Methods 0.000 claims description 45
- 238000010438 heat treatment Methods 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 20
- 238000004378 air conditioning Methods 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 17
- 238000013507 mapping Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000035807 sensation Effects 0.000 description 6
- 230000004907 flux Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/0075—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being solar radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00792—Arrangement of detectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2226—Electric heaters using radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H2001/2228—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters
- B60H2001/224—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters automatic operation, e.g. control circuits or methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Definitions
- the present invention relates to devices for analyzing infrared radiation of a surface of a vehicle interior, in particular an automobile. It relates to such an analysis device. It also relates to a passenger compartment of the motor vehicle equipped with such a device. It also relates to a method of implementing such a device.
- a motor vehicle is commonly equipped with a ventilation, heating and / or air conditioning system for modifying a temperature of an air contained inside a passenger compartment of the motor vehicle, from an admission and / or a recirculation of an air flow.
- the motor vehicle is incidentally equipped with radiant panels that are able to generate infrared waves to warm the passenger compartment and therefore the passengers of the vehicle.
- the thermal sensation is often disconnected from a temperature of the air contained inside the passenger compartment.
- the infrared radiation from the outside or radiant panels present in the cabin does not always influence the temperature of the air contained inside the cabin.
- the disadvantage of such a temperature sensor lies in the fact that it does not take into account a thermal sensation of the user.
- An object of the present invention is to provide an analysis device that is capable of providing information that takes into account a thermal sensation of the user. Indeed, such a thermal sensation is often disconnected from a temperature of the air contained inside the habitat.
- An object of the present invention is therefore to provide an analysis device that is capable of providing information to the thermal comfort management system that takes into account a thermal sensation of the user.
- the subject of the present invention is a device for analyzing a radiation infrared reflected by at least one surface of a passenger compartment of a motor vehicle, characterized in that it comprises at least one infrared camera arranged and oriented so as to measure at least a portion of the infrared radiation reflected by the at least one surface of the cockpit.
- an analysis device makes it possible to take into account the infrared radiation reflected on the surfaces of the passenger compartment, which allows a better management of comfort taking into account parameters other than the temperature of the passenger compartment, which does not always reflect the temperature felt by the vehicle users.
- this infrared camera the data relating to the comfort of the passenger compartment now take into account the temperature felt.
- the installation of such an infrared camera has the advantage of being simple and quick to implement and install inside the passenger compartment of the motor vehicle.
- the use of the infrared camera offers other interesting avenues to exploit for comfort management or safety in the motor vehicle. It should be noted that, by the terms "arranged and oriented" is meant that the field of view of the at least one infrared camera comprises at least a portion of the surfaces of the passenger compartment.
- any surface within the cabin on which the infrared radiation is likely to be reflected it is understood any surface within the cabin on which the infrared radiation is likely to be reflected. According to one or more characteristic (s) that can be taken alone or in combination, it can be provided that:
- the analysis device comprises a control unit associated with the at least one infrared camera and is configured to control a ventilation, heating and / or air conditioning, and / or at least one radiant panel present in the cockpit.
- the control unit instructs the installation to ventilate a flow of conditioned or heated air to reach a set temperature.
- the control unit is configured to control the infrared radiation emitted by the radiant panel. For example, if the infrared radiation is too strong relative to a set point, the control unit orders a decrease in the production of infrared radiation of part or all of the radiant panels.
- the analysis device is in the form of a dome, the analysis device having a field of view between 180 to 360 degrees.
- the dome comprises at least one infrared camera.
- the camera or cameras, each equipped with an identical or specific sensor and optics, are arranged and oriented so as to delimit together a field of view between 180 and 360 degrees.
- a dome can cover either a portion of the passenger compartment, including a portion comprising the front seats or the entire cabin.
- the analysis device is intended to be fixed in the passenger compartment of the motor vehicle.
- the analysis device is intended to be attached to an element of the passenger selected from a roof of the passenger compartment and a pillar of the passenger compartment. Thus, the visibility of the at least one camera is optimal.
- the at least one infrared camera has a resolution greater than or equal to 24 x 32 pixels. In the presence of several infrared cameras, at least one of the infrared cameras has a resolution greater than or equal to 24 x 32 pixels. In one embodiment, each infrared camera has a resolution greater than or equal to 24 x 32 pixels. Such a resolution allows an accurate analysis of the infrared radiation in the passenger compartment. For example, this resolution allows a mapping of more than 700 distinct points.
- the at least one infrared camera is configured to determine an average temperature of a wall of the passenger compartment of dimension between 10 and 100mm.
- the infrared camera has a spatial resolution less than or equal to 100mm.
- Each of the four cameras has a scanning angle of at least 90 degrees, the cameras being arranged so that each measuring field is superimposed on at least one other measurement field.
- the at least one infrared camera is intended to be arranged and oriented so as to analyze the infrared radiation delivered by all the surfaces of the passenger compartment.
- the at least one infrared camera is intended to be arranged and oriented to analyze at least a portion of the infrared radiation delivered by a radiant panel.
- the analysis device is also configured to analyze the radiation emitted by a radiant panel. It is understood that the field of view of the camera comprises the surfaces of the passenger compartment and at least a portion of the radiant panel present in the passenger compartment.
- the invention also relates to a passenger compartment of a motor vehicle comprising at least one surface, characterized in that the passenger compartment comprises an analysis device as defined above.
- the analysis device is attached to an element of the passenger compartment selected from a roof of the passenger compartment and a pillar of the passenger compartment.
- the at least one infrared camera is attached to a roof of the cockpit. Such a location facilitates the analysis of infrared radiation from a height position of the infrared camera inside the passenger compartment.
- the infrared camera is placed in the middle of the pavilion or near the middle of the pavilion, ie less than 30 cm from the middle of the pavilion. It is understood that the middle of the flag is the point of the flag located equidistant from the edges of the flag. More specifically, the middle of the flag is located equidistant from the doors of the motor vehicle placed vis-à-vis one another. It is also understood that the middle is the point of the flag of the motor vehicle located equidistant from the dashboard and a rear end of the motor vehicle. Thus, the middle is a point belonging to both the median longitudinal plane and the median vertical plane of the motor vehicle. This particular location of the infrared camera gives it an optimal visibility of the passenger compartment.
- the infrared camera is placed on a pillar of the passenger compartment, that is to say on one of the structural elements that connect the body with the roof of the passenger compartment, between the various windows.
- the field of view of the analysis device is understood between 90 and 180 °.
- the infrared camera is configured to analyze the infrared radiation delivered by the at least one radiant panel located in the motor vehicle, as well as the infrared radiation emitted or reflected by walls of the passenger compartment.
- the at least one infrared camera of the analysis device is arranged and oriented towards a dashboard, and / or a side window, and / or a windshield, and / or a front sun visor of the motor vehicle, and / or a seat and / or a seat back and / or rear and / or a steering wheel.
- At least one of the surfaces of the passenger compartment is a cabin cockpit or a pillar of the cockpit or a sun visor or a glazed upper portion of a door or a dashboard or a door trim, or an armrest or surface defining a cellar with feet or a floor portion or a seat base or a seatback or part of a steering wheel or a windshield.
- the control unit of the analysis device is configured to control the ventilation system, heating and / or air conditioning for delivering a flow of air.
- the control unit orders the ventilation, heating and / or air conditioning system to ventilate a flow of conditioned or heated air to reach a set temperature in the passenger compartment.
- the control unit of the analysis device is configured to control the at least one radiant panel.
- the control unit orders the radiant panel to emit more or less infrared rays.
- the at least one radiant panel oriented towards the cockpit.
- radiant panels are arranged in the passenger compartment so as to cover at least one head zone and / or a bust zone and / or a foot zone and / or a leg zone.
- covering it is meant that the infrared radiation emitted by each of the radiant panels is directed to at least one of these zones.
- the head zone is located at a headrest
- the bust area is located at a seat back
- the foot zone is located at a cellar feet
- the one leg area is located at a seat base.
- a first set of radiant panels comprises a radiant panel disposed on the roof, above a window of the vehicle and another radiant panel disposed on a pillar.
- a second set of radiant panels includes a radiant panel located in a door trim and a second radiant panel located under the steering wheel.
- a third set of radiant panels comprising three radiant panels are provided, with a first radiant panel located on the floor, a second radiant panel located on one side of a central console and a third radiant panel located on a lower part of the dashboard.
- a fourth set of radiant panels comprises a first radiant panel disposed on an amount of the motor vehicle and a second radiant panel under the dashboard.
- At least one radiant panel is oriented towards the head zone.
- At least one radiant panel is oriented towards the bust area.
- At least one radiant panel is oriented towards the foot zone.
- At least one radiant panel is oriented towards the leg zone.
- the subject of the invention is also a method for implementing an infrared radiation analysis device fitted to the passenger compartment as defined above, characterized in that the method comprises:
- Such a method then makes it possible to know the surface temperatures of the surfaces of the passenger compartment.
- the infrared radiation acquired during the first step is the infrared radiation emitted by each of the surface elements of the passenger compartment.
- This infrared radiation is emitted towards each of the pixels of the sensor or sensors arranged opposite each of the surface elements of the passenger compartment.
- opposite means that the sensor is arranged to receive infrared radiation from at least one surface element, in particular by its position, its orientation, its resolution and / or the specificity of its optics.
- the surface temperature converted during the second step is the average surface temperature associated with each of the surface elements.
- This conversion notably takes into account the infrared emissivity of each surface element.
- the infrared emissivity of a surface element is previously calibrated and entered in a computer of the analysis device.
- the first step is performed using the at least one infrared camera.
- the second step is performed by a calculator of the analysis device.
- the second stage of the process is performed by calculating at least one average surface temperature per zone of the passenger compartment.
- the second step includes a measurement of infrared radiation delivered by the at least one radiant panel present inside the passenger compartment.
- the method comprises a third step of controlling a ventilation system, heating and / or air conditioning, and / or a radiant panel to control a temperature felt inside the passenger compartment.
- the method comprises a fourth step of measuring a differential temperature, the differential temperature being defined as a difference between an internal temperature of the air contained inside the passenger compartment and an outside temperature of the air present in the passenger compartment; outside the motor vehicle.
- the method comprises a fifth step of mapping the surface temperatures of the passenger compartment and / or the radiant panel. This fifth step is made to calculate a radiative temperature for at least one area of the body of at least one passenger.
- the radiative temperature for at least one area of the body is that which allows calculate the infrared heat flux received by this zone of the body, independently of the thermal flux received by the heat exchanges with the air.
- FIG. 1 is a partial view of a longitudinal section of a passenger compartment of a motor vehicle equipped with an analysis device according to the present invention
- FIG. 2 is a partial perspective view of a vertical section of the passenger compartment illustrated in FIG. 1;
- FIG. 3 is a diagrammatic illustration of a method of the present invention.
- the names longitudinal, transverse, vertical, lateral, left, right, upper, lower, front, rear refer to the orientation, in an orthonormal Oxyz coordinate system, of a motor vehicle 1.
- the Ox axis represents the longitudinal direction
- the axis Oy represents the transverse direction
- the axis Oz represents the vertical direction of the object in question, in particular the motor vehicle 1.
- the axis Ox extends in one of the plans defining the orthonormal reference Oxyz and the direction of travel of the motor vehicle moving forward or backward.
- the axis Oy extends in a plane parallel to the ground and perpendicular to the axis Ox, previously defined. Commonly, the axis Oy extends between two doors 2 arranged opposite one another, in other words on one side of the motor vehicle 1 to another side of the motor vehicle 1 so as to measure a path before, a rear track or an overall width of the vehicle, along this axis Oy.
- the axis Oz extends in a plane parallel to the axis of gravity and extends between a roof 3 and a floor 4 of the motor vehicle 1.
- a longitudinal character of an element implies that this element is extended along the Ox axis.
- a transversal character of an element implies that the element is extended along the axis Oy.
- a vertical character of an element implies that the element is extended along the Oz axis.
- a longitudinal plane is parallel to the Oxz plane
- a transverse plane is parallel to the Oxy plane
- a vertical plane is parallel to an Oyz plane.
- the lateral denomination characterizes an element which is located on one side or the other of a median longitudinal plane of the motor vehicle 1, the median longitudinal plane being a longitudinal plane separating the motor vehicle 1 into two equal portions of the two sides. the other of the median Oxz longitudinal plane.
- the names right or left characterize a portion of the motor vehicle 1 located on either side of the median longitudinal plane, a left portion comprising for example a steering wheel 5 of the motor vehicle 1, a straight portion being exempt.
- the upper and lower denominations characterize a portion of the motor vehicle 1 located on either side of a median transverse plane Oxy, the upper part comprising the roof 3 and the lower part comprising the floor 4.
- the median transverse plane is a plane transversal separating the motor vehicle 1 into two equal portions.
- the front and rear names characterize a portion of the motor vehicle 1 located on either side of a vertical plane Oyz median, the front part comprising the steering wheel 5 and the rear portion being free of steering wheel.
- the median vertical plane is a vertical plane separating the motor vehicle 1 into two equal portions.
- Figure 1 shows that the motor vehicle 1 comprises a passenger compartment 7 inside which a user is likely to take place.
- the passenger compartment 7 comprises surfaces 21 which can be subjected to infrared radiation.
- This infrared radiation can come from an environment outside the vehicle, such as solar radiation, or can come from a radiant panel 10 present in the passenger compartment 7 of the motor vehicle 1, as will be described below.
- the passenger compartment 7 comprises different surfaces 21, on which the infrared rays are reflected.
- An indicative list is given below.
- the roof 3 can be divided into several parts, with a first part extending from the windshield 17 to a highest point of the roof 3, this first part being disposed close to a sun visor 14, a second part located between a highest point of the roof 3 and an upper portion of the doors 2, this portion being commonly curved, a third portion overlooking the front seats 15 and optionally a fourth portion overlooking the rear seats, when they are present.
- the dashboard 16 is a transverse element of the motor vehicle 1 located under a windshield 17 of the motor vehicle 1 and comprising the wall of the steering wheel 5 of the motor vehicle 1.
- the dashboard 16 comprises the indicators of the motor vehicle 1 which are necessary for the navigation of the latter, such as counters, navigators or the like.
- the dashboard 16 is generally oriented towards the bust of a user installed in the front seats 15, indifferently driver or passenger.
- the center console meanwhile, is a longitudinal element of the motor vehicle 1 extending on the floor 4 of the motor vehicle 1.
- the central console comprises for example a handbrake, when it is present or storage.
- the center console with the dashboard 16 together define cellars with feet of the vehicle 1.
- the cellar with feet is a lower zone of the front part of the motor vehicle 1, in particular located at the front of the front seats 15, indifferently driver or passenger.
- the cellar with feet is intended to receive the feet of users installed at the front of the motor vehicle 1.
- the surfaces 21 of the passenger compartment 7 there is also the door trim 2, the arm rest 18 fitted to these doors 2 and the side windows of the vehicle, on which the infrared radiation is reflected, being reflected towards the bust and / or the arms of a user.
- the surfaces 21 of the passenger compartment 7 there are also the surfaces forming the seats 15 of the vehicle, such as the seats, the seat backs, the headrests 15a and the rear seat.
- these surfaces 21 are subjected to infrared radiation and are then likely to heat up strongly. In this case, these surfaces 21 reflect and refract infrared radiation at the interior of the passenger compartment 7 and are likely to heat a user and / or to give the latter a thermal sensation of high heat, regardless of an internal temperature Tint of the air contained inside the interior 7.
- the term “indoor air” the air contained inside the passenger compartment 7 of the motor vehicle 1 and is called “outside air” an air present outside of the motor vehicle 1.
- the term “internal temperature” Tint characterizes a temperature of the air contained inside the passenger compartment 7 while an “outside temperature” Text equates to an air temperature present outside the motor vehicle 1.
- zones ZI, Z2, Z3, Z4 in the passenger compartment 7, in which a user of the vehicle 1 is intended to evolve, when the latter is present in the vehicle.
- the head zone ZI is an area of the passenger compartment 7 adapted to receive a head of the user
- the bust zone Z2 is intended to receive a bust of the user
- the foot zone Z3 is intended receiving the feet of the user
- the leg zone Z4 is intended to receive the legs of the user.
- the head zone ZI overhangs the bust zone Z2 which overhangs the foot zone Z3
- the leg zone Z4 is interposed vertically between the bust zone Z2 and the foot zone Z3.
- the motor vehicle 1 is provided with a device 50 for analyzing the infrared radiation reflected by the surfaces 21 of the passenger compartment 7.
- the analysis device 50 comprises at least one infrared camera 51 which is suitable for measure, remotely, the infrared radiation reflected by at least one of the surfaces 21 7.
- the infrared camera 51 is arranged and oriented towards the zones ZI, Z2, Z3, Z4 in which a user can be present.
- infrared camera 51 any device for acquiring images and / or videos in the spectrum of the infrared at least, the spectrum of the infrared corresponding to wavelengths included between 7 and 14 micrometers.
- the infrared radiation reflected by at least one of the surfaces 21 of the passenger compartment 7 is measured in all cases by at least one infrared camera 51 located inside the passenger compartment 7.
- the infrared radiation measured by the infrared camera 51 is exclusively located in the passenger compartment 7.
- the infrared camera 51 is arranged and oriented to capture the infrared radiation at a point or a surface of the passenger compartment 7.
- the infrared camera 51 is arranged and oriented to capture the infrared radiation at a point or a surface of the passenger compartment 7, such as a surface 21 of the passenger compartment. With the aid of the analysis device 50, this infrared radiation is quantized and is then converted into a surface temperature Ts1 of a given surface 21 or point.
- the infrared camera 51 is able to simultaneously measure the infrared radiation of the entire cabin located in its field of view and thus allow the analysis device 50 to simultaneously deduce a first surface temperature Tsl of at least one of the surfaces 21 and a second surface temperature Ts2 of at least one of the other surfaces 21.
- the analysis device 50 is configured to map the infrared radiation measurements as well as the surface temperatures Ts1, Ts2. More specifically, the infrared camera 51 is configured to establish an infrared image at least two dimensions of at least a portion of the passenger compartment 7, which is located in a field of view of the infrared camera 51. Preferably, the camera infrared 51 is configured to establish a two-dimensional infrared image zones ZI, Z2, Z3, Z4 likely to receive a user or a body part of the user.
- the infrared cameras 51 are able to establish a three-dimensional infrared image of the passenger compartment 7 and / or zones ZI, Z2, Z3, TA .
- the infrared camera is configured to determine an average temperature of a wall of the passenger compartment of dimension less than or equal to 100mm.
- each infrared camera 51 is a camera with a spatial resolution of between 10 and 100 mm.
- the infrared camera 51 is advantageously arranged in a medium M of the roof 3 of the motor vehicle 1.
- the middle M is the point of the roof 3 of the motor vehicle 1 located equidistant from the doors 2 of the motor vehicle placed vis-à-vis of the other, along the axis Oy.
- the middle M is the point of the roof 3 of the motor vehicle 1 which is located at an equal distance from the dashboard 16 and at one end rear 20 of the motor vehicle 1, along the axis Ox.
- the medium M is a point belonging both to the median longitudinal plane and to the median vertical plane of the motor vehicle 1.
- This particular location of the infrared camera 51 makes it possible for it to offer an optimized visibility of the passenger compartment 7 and in particular the surfaces 21 able to reflect the infrared radiation in order to establish an optimized analysis of the surface temperatures Tsl, Ts2 of the surfaces 21.
- the infrared camera 51 is disposed in a rear part of the roof 3, that is to say above the rear seats. According to another variant embodiment, the infrared camera 51 is installed in a front portion of the horn 3, for example at the foot of a central rearview mirror.
- the analysis device 50 is capable of comprising a plurality of infrared cameras 51 which, together, are capable of covering a 360 ° field of view to establish a complete analysis of the infrared radiation of the surfaces 21 of the passenger compartment. that the infrared cameras 51 are able to take into account any part of the passenger compartment 7, which is subjected to infrared radiation, such as infrared radiation emitted by radiant panels 10 or from solar sources, or by other specific constraints.
- a dome for example hemispherical, houses one or more infrared cameras 51 whose sum of viewing angles preferably covers at least 180 ° and preferentially still 360 °.
- the infrared cameras 51 are arranged radially around the middle M of the flag 3, so that their respective angles of view succeed one another circularly one after the other around the middle M to cover 360 ° together.
- the infrared camera 51 advantageously has a refresh rate of the measurement which is between one second and ten seconds, the heat exchange being on a time scale of between one second and ten seconds.
- the measurement provides a surface temperature Ts1, Ts2 corresponding to an average temperature associated with each pixel with a precision which is less than +/- 2 ° C.
- the spatial resolution of the temperature measurement is sufficient to be able to isolate maximum and minimum temperatures from the surfaces 21 located in the field of view of the infrared camera 51.
- a control unit 52 which is in communication with the analysis device 50 and the infrared camera or cameras 51, is able to appropriately control the thermal comfort of the passenger compartment.
- the control unit 52 is able to control a system 6 for managing the comfort of the passenger compartment, hereinafter referred to as the system 6.
- the system 6 comprises, for example, a ventilation, heating and / or air conditioning installation 8, hereinafter referred to as the installation 8, which is capable of modifying the internal temperature Tint from an inlet and / or a recirculation of an air flow FA inside the passenger compartment 7 of the motor vehicle 1, in order to reach a set temperature Te.
- a ventilation, heating and / or air conditioning installation 8 hereinafter referred to as the installation 8, which is capable of modifying the internal temperature Tint from an inlet and / or a recirculation of an air flow FA inside the passenger compartment 7 of the motor vehicle 1, in order to reach a set temperature Te.
- Such an installation 8 comprises a housing 30 which houses a blower 31 for circulating the air flow FA in the housing 30 towards the passenger compartment 7, and a heat exchanger 32 able to modify a temperature of the air flow FA during the passage of heat exchanger 32.
- the system 6 also comprises a heater 9 of the passenger compartment 7 from a heating by radiation.
- the heater 9 includes at least one radiant panel 10 for
- such a radiant panel 10 By emitting infrared waves radiating and reflecting if necessary on the surfaces 21 of the passenger compartment 7 or the user, such a radiant panel 10 improves the thermal comfort felt by the user. More specifically, the radiant panel 10 improves a temperature felt by the user, so that the user has the impression that the system 6 has reached the set temperature Te. It should be noted that the radiant panel 10 has little effect on the actual temperature Tint of the passenger compartment 7.
- Each radiant panel 10 comprises a plurality of electrodes capable of delivering heat by infrared radiation.
- the electrodes are for example obtained by screen printing on a conductive substrate.
- the heating device 9 comprises a plurality of radiant panels 10 arranged at various locations in the passenger compartment 7. More specifically, the radiant panels 10 are housed inside the passenger compartment 7 and are oriented so as to emit infrared waves towards the passenger compartment 7 and not towards the outside of the motor vehicle 1.
- the radiant panels 10 are attached to walls 40 delimiting the passenger compartment 7. These walls 40 define, for example, the doors 2, the roof 3, the floor 4 and / or the dashboard 16 .
- Each radiant panel 10 is for example intended to heat one of the zones ZI, Z2, Z3, Z4 of the passenger compartment 7 capable of receiving a user or a body part of the user, by emitting infrared rays towards the particular zone which is assigned to him.
- each radiant panel 10 is assigned to the heat treatment of one of the zones ZI, Z2, Z3, Z4 of the passenger compartment 7.
- at least a part of an orthogonal projection of the surface of the radiant panel 10 to the interior of the passenger compartment 7 is intended to meet at least partially the user.
- the radiant panels 10 are oriented towards at least one zone ZI, Z2, Z3, Z4 of the passenger compartment 7 which is intended to be heated by infrared radiation.
- the infrared camera 51 measuring the infrared radiation reflected by the surfaces 21, can also be configured to measure the infrared radiation emitted by the panels. 10.
- the analysis device 50 derives a first surface temperature Tsl from the surfaces 21 and another surface temperature Ts3 of the radiant panels 10, and then communicate by appropriate means, wired or remote, these temperatures. to the control unit 52, which is able to control the installation 8 and / or the heating device 9, according to the nature of these surface temperatures Tsl, Ts3.
- the unit 52 which is in communication with the analysis device 50 and the infrared camera (s) 51, is able to appropriately control the comfort management system 6.
- the infrared camera 51 measures the infrared radiation reflected by the surfaces 21, or even the radiant panels 10 too. These data are taken into account, in real time, by the analysis device 50 which deduces the surface temperatures Tsl, Ts2, Ts3 from the surfaces 21, or even the radiant panels 10 as well.
- the analysis device 50 communicates, by appropriate means, wired or remote, these surface temperatures Tsl, Ts2, Ts3 to the control unit 52, which is then able to control the installation 8 of ventilation, heating and / or air conditioning and possibly the heating device 9, when it is present, as a function of these surface temperatures Ts 1, Ts 2, Ts 3.
- the control unit 52 orders the installation 8 of ventilation, heating and / or air conditioning to cool the passenger compartment 7, and if radiant panels 10 are present , the control unit 52 orders a decrease in the production of infrared radiation of some or all of the radiant panel (s) covering this zone ZI, Z2, Z3, TA.
- the control unit 52 orders the installation 8 of ventilation, heating and / or air conditioning to heat the passenger compartment 7, and if Radiant panels 10 are present, the control unit 52 orders an increase in the production of infrared radiation of some or all of the radiant panel (s) covering this zone ZI, Z2, Z3, Z4.
- control unit 52 is able to make a radiative thermal balance of the surfaces 21 and therefore the zones ZI, Z2, Z3, Z4 of the passenger compartment 7 from the information provided by the infrared camera 51 to finally control the temperature felt by the user.
- the control unit 52 is also able to calculate and take into account a radiative temperature of the passenger compartment 7.
- control unit 52 is able to control the installation 8 ventilation, heating and / or air conditioning and possibly the heater 9, when it is present.
- control unit 52 is configured, by calculation, to optimize the setting implementation of the ventilation system 8, heating and / or air conditioning, and / or the heating device 9, to obtain as quickly and as effectively as possible the set temperature Te, at least in temperature felt by the user.
- the control unit 52 is also able to detect an abnormal heating of the passenger compartment 7 or one of its zones, so as to alert a user for example in case of departure of a fire in the passenger compartment 7
- the control unit 52 is also able to detect the presence of a person or an animal while the vehicle is locked.
- the control unit 52 is configured to alert, for example by triggering, the vehicle's optical signaling devices, such as flashing warning lights, and / or by triggering the horn of the vehicle. vehicle, and / or through the use of a satellite network, and / or by remote notification via a smartphone application.
- FIG. 3 schematizes a method 100 for implementing the analysis device 50, which comprises at least a first step E 1 of acquiring infrared radiation in the passenger compartment 7 of the motor vehicle 1.
- This first step E 1 is carried out with the aid of the infrared cameras 51 constituting the analysis device 50. More specifically, this first step comprises a measurement of the first surface temperature Tsl from minus one of the surfaces 21 of the passenger compartment 7.
- the method 100 comprises a second step E2 in which the infrared radiation measured during the first step E1 is converted into surface temperature Ts1, Ts2, Ts3. At least one of these surface temperatures Tsl, Ts2 is representative of the temperature of at least one of the surfaces 21 of the passenger compartment 7.
- this second step E2 may also include the calculation of the surface temperature Ts3 of a radiant panel 10 present in the passenger compartment 7. It should be noted that after this second step E2, the method 100 may comprise a step of displaying a map of the surface temperatures calculated in the passenger compartment 7.
- the method 100 then comprises a third step E3 for controlling the ventilation, heating and / or air conditioning installation 8 fitted to the motor vehicle 1 and / or a heating device 9, that is to say part or all of the radiant panels 10, depending on the surface temperature Tsl, Ts2 measured in the previous step.
- This control step E3 consists, for example, in controlling the infrared radiation reflected by the surfaces 21 in the direction of a zone ZI, Z2, Z3, Z4 of the passenger compartment 7.
- This third control step E3 is implemented at the using the control unit 52 previously described.
- the piloting of the ventilation, heating and / or air conditioning installation 8 fitted to the motor vehicle 1 makes it possible to control the internal temperature Tint of the air contained inside the passenger compartment 7.
- the control unit 52 is able to modify a thermal power delivered in the passenger compartment 7. If the first surface temperature Ts1 and / or the second surface temperature Ts2 measured is greater than a set value Te, the control unit 52 is able to stop the heating device 9 and / or start in cooling mode the installation 8. If the first surface temperature Tsl and / or the second surface temperature Ts2 measured is less than the value of set point Te, the control unit 52 is able to turn on the heating device 9 and / or to start the installation in heating mode 8.
- the control unit 52 is able to modify a thermal power delivered by the installation 8. If the first surface temperature Tsl and / or the second surface temperature Ts2 measured is greater than a set value, the control unit 52 is able to start up in cooling mode the installation 8. If the first surface temperature Tsl and / or the second surface temperature Ts2 measured is less than the set value, the control unit 52 is able to start up the installation in heating mode 8.
- the unit of command 52 is for example able to precondition a passenger compartment 7 in the absence of a user as soon as a setpoint is exceeded.
- the control unit 52 is able to modify a thermal power delivered by the heating device 9. If the first temperature of Tsl surface and / or the second surface temperature Ts2 measured is greater than a set value, the control unit 52 is able to stop the heating device 9. If the first surface temperature Tsl and / or the second temperature of measured surface Ts2 is lower than the set value, the control unit 52 is able to start the heating device 9.
- the control unit 52 is for example able to precondition a passenger compartment 7 in the absence of user as soon as a setpoint is exceeded.
- the control unit 52 is for example intended to precondition the passenger compartment 7 in the absence of a user, especially when a setpoint is exceeded.
- the method 100 comprises a fourth step E4 for measuring a differential temperature Tr defined as a difference between the internal temperature Tint of the air contained inside the passenger compartment 7 and the outside temperature Text of the air present outside the motor vehicle 1.
- the differential temperature Tr is for example displayed on a display simultaneously with the mapping of surface temperatures Tsl, Ts2, Ts3.
- the method 100 may also comprise a fifth step E5 of performing a mapping of the surface temperatures Tsl, Ts2, Ts3 of the passenger compartment 7, in order to calculate a radiative temperature for at least one area of the body of at least one passenger.
- the radiative temperature for at least one zone of the body is that which makes it possible to calculate the infrared heat flux received by this zone of the body, independently of the thermal flux received by the heat exchange with the air.
- This mapping can then be displayed in order to obtain a thermal image of the passenger compartment 7.
- this mapping makes it possible to determine the equivalent ambient temperatures seen by each part of the user's body and to adjust accordingly the thermal comfort. of the passenger compartment 7.
- the analysis device 50 allows rapid analysis of the rapid temperature and simplified comfort control thanks to the presence of the control unit 52.
- the result is optimized comfort from the achievement of a temperature felt close to a set value Te, as soon as possible after operation of the installation 8 and / or the heating device 9.
- Set temperature Te can be reached within 10 to 30 seconds at a given point.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air-Conditioning For Vehicles (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Radiation Pyrometers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1758456A FR3071056B1 (en) | 2017-09-12 | 2017-09-12 | DEVICE FOR ANALYSIS OF INFRARED RADIATION FROM A SURFACE OF A MOTOR VEHICLE INTERIOR |
PCT/FR2018/052197 WO2019053359A1 (en) | 2017-09-12 | 2018-09-10 | Device for analysing infrared radiation from a surface of a motor vehicle passenger compartment |
Publications (1)
Publication Number | Publication Date |
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EP3682205A1 true EP3682205A1 (en) | 2020-07-22 |
Family
ID=61027829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18793702.4A Pending EP3682205A1 (en) | 2017-09-12 | 2018-09-10 | Device for analysing infrared radiation from a surface of a motor vehicle passenger compartment |
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US (1) | US11841275B2 (en) |
EP (1) | EP3682205A1 (en) |
JP (1) | JP2020533235A (en) |
KR (1) | KR102398346B1 (en) |
CN (1) | CN111587366A (en) |
FR (1) | FR3071056B1 (en) |
WO (1) | WO2019053359A1 (en) |
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KR20200108219A (en) * | 2019-03-08 | 2020-09-17 | 현대자동차주식회사 | Heat-loss managing system for vehicle and controlling method therefor |
US11993204B2 (en) * | 2020-12-24 | 2024-05-28 | Ronald E. Smith, JR. | Vehicle and pedestrian alert system and vehicle including an alert system |
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KR101477233B1 (en) * | 2013-09-16 | 2014-12-29 | 현대모비스 주식회사 | Customized air conditioner controlling system and method thereof |
JP2015096413A (en) * | 2013-10-11 | 2015-05-21 | パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America | Processing method, program, processing device, and detection system |
FR3015064B1 (en) * | 2013-12-13 | 2016-02-19 | Dav | MAN-MACHINE INTERFACE FOR MOTOR VEHICLE |
KR20160070869A (en) * | 2014-12-10 | 2016-06-21 | 현대자동차주식회사 | Heating panel for vehicle |
KR20160124461A (en) | 2015-04-20 | 2016-10-28 | 한온시스템 주식회사 | Vehicle air conditioner having infrared camera |
JP6409709B2 (en) | 2015-07-29 | 2018-10-24 | 株式会社デンソー | Control device |
JP6459952B2 (en) * | 2015-12-22 | 2019-01-30 | 株式会社デンソー | Air conditioner for vehicles |
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US10272742B2 (en) * | 2017-01-26 | 2019-04-30 | GM Global Technology Operations LLC | HVAC systems and methods for controlling zoned interior temperatures of a vehicle including display of thermographic anthropomorphic figures |
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2017
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2018
- 2018-09-10 EP EP18793702.4A patent/EP3682205A1/en active Pending
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- 2018-09-10 JP JP2020515018A patent/JP2020533235A/en active Pending
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- 2018-09-10 US US16/646,778 patent/US11841275B2/en active Active
- 2018-09-10 WO PCT/FR2018/052197 patent/WO2019053359A1/en unknown
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KR20200053562A (en) | 2020-05-18 |
FR3071056A1 (en) | 2019-03-15 |
WO2019053359A1 (en) | 2019-03-21 |
CN111587366A (en) | 2020-08-25 |
FR3071056B1 (en) | 2021-01-08 |
JP2020533235A (en) | 2020-11-19 |
KR102398346B1 (en) | 2022-05-13 |
US20200290430A1 (en) | 2020-09-17 |
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