DE102022208735A1 - Mobile lighting system, vehicle, method and computer program product - Google Patents

Abstract

The invention relates to a mobile lighting system (100) for detecting and providing light exposure information for a vehicle (10), comprising: - a light sensor (110) which is designed to measure the illuminance of sunlight (20) over a period of time, - a processor (120), which is designed to calculate light exposure information at least from the illuminance measured over the period of time, - a display (130), which is designed to output the light exposure information to a person (30), the light sensor ( 110), the processor (120) and the display (130) can be arranged in a vehicle (10), the processor (120) also being designed to provide at least one measure for increasing or reducing the person's (30) exposure to light determine and output to the person (30) via the display (130). The invention further relates to a vehicle, a method and a computer program product.

Description

The invention relates to a mobile light system for detecting and providing light exposure information for a vehicle, a vehicle, a method, and a computer program product.

The human organism depends on intense light to maintain circadian rhythms. Naturally, the planet's own rotation as an external rhythm generator causes the variation in the intensity of illumination on Earth due to both the alternation of day and night and the changing position of the sun during the day. This pacemaker is recognized in the human visual system, to which the organism adapts as best as possible.

Exposure to light in the subjective morning speeds up the running of the internal clock, while exposure to light in the subjective evening slows down the running of the internal clock.

For optimal human performance, it is advantageous if the internal clock is regularly adjusted to the natural course of the day. However, external influences, especially electronic devices such as smartphones (too bright) or staying in closed rooms (too dark), can lead to a deviation from the optimal running of the internal clock.

In addition, particularly in latitudes with distinct seasons where the days can become very short, natural light exposure may be too low to achieve optimal human performance. If the amount of sunlight absorbed is significantly too low for people, this can lead to a melancholic mood or a so-called winter depression.

Light therapy has now proven to be a proven treatment for such symptoms. The lack of natural sunlight is replaced by exposure to artificial light, thereby normalizing people's neurotransmitter levels. To do this, a user exposes themselves to a so-called daylight lamp for a period of around 20 to 6 minutes, the illuminance of which is usually between 2,500 and 10,000 lux. As a rule of thumb, the brighter the light, the shorter the exposure times can be.

The effectiveness is well proven at an exposure of 10,000 lux for half an hour, or 2,500 lux for two hours.

In people with winter depression, 60-90% of people with winter depression can improve their symptoms within 2 to 3 weeks.

Exposure to sunlight is therefore an important factor for human health and performance. However, substituting sunlight with artificial radiation sources that have the same or at least a similar effect is technically complex. In addition, a high degree of planning is usually necessary, which makes implementation into everyday life difficult for many people.

It is an object of the present invention to at least partially eliminate the above disadvantages known from the prior art. In particular, it is an object of the present invention to provide a mobile light system, a method, and a computer program product with which a person's exposure to light can be recorded and optimized. Another task is to implement the devices and methods in a particularly cost-effective manner.

The above object is achieved by a mobile lighting system with the features of claim 1, a vehicle with the features of claim 8, a method with the features of claim 10, and a computer program product with the features of claim 12. Further features and details of the invention result from the respective subclaims, the description and the drawings. Features and details that are described in connection with the mobile lighting system according to the invention naturally also apply in connection with the vehicle according to the invention, the method according to the invention and/or the computer program product according to the invention and vice versa, so that the disclosure of the individual aspects of the invention is always mutually referenced is or can be taken.

• - einen Lichtsensor, welcher dazu ausgeführt ist, eine Beleuchtungsstärke von Sonnenlicht über einen Zeitraum zu messen,
• - einen Prozessor, welcher dazu ausgeführt ist, zumindest aus der über den Zeitraum gemessenen Beleuchtungsstärke eine Lichtexpositionsinformation zu berechnen,
• - eine Anzeige, welche dazu ausgeführt ist, die Lichtexpositionsinformation an eine Person auszugeben,

wobei der Lichtsensor, der Prozessor und die Anzeige in einem Fahrzeug anordenbar sind, wobei der Prozessor ferner dazu ausgeführt ist, zumindest eine Maßnahme für eine Erhöhung und/oder Verringerung einer Lichtexposition der Person zu ermitteln und über die Anzeige an die Person auszugeben und/oder das Fahrzeug entsprechend anzuweisen.According to a first aspect of the invention, a mobile light system is provided for detecting and providing light exposure information for a vehicle, comprising:

• - a light sensor designed to measure the illuminance of sunlight over a period of time,
• - a processor which is designed to calculate light exposure information at least from the illuminance measured over the period of time,
• - a display designed to output the light exposure information to a person,

wherein the light sensor, the processor and the display can be arranged in a vehicle, wherein the processor is further designed to determine at least one measure for increasing and / or reducing the person's exposure to light and to output it to the person via the display and / or instruct the vehicle accordingly.

With reference to the present invention, the term mobile is intended to mean that the position of the lighting system can be changed, in particular by a person. It can be provided that a person can carry the mobile lighting system with them. Alternatively or in addition, it can also be provided that the mobile lighting system can be moved within a device, in particular a vehicle.

In the context of the invention, a detection should be understood to mean a measurement of a measured variable, which in particular can be subjected to further processing. For example, an illuminance can be calculated from a measured voltage, which results in the illuminance being recorded by measuring the voltage.

A provision can be understood as the provision of information for a person as well as for an information system, in particular for a computer with a computing unit and/or a database. In principle, the provision of information can be made accessible to a person using any sense, in particular visually and/or acoustically.

Light exposure information is information about the level of illumination a person is and/or was exposed to. In other words, the light exposure information includes both an illuminance and information about time in the sense of a point in time and/or a period of time.

In the context of the invention, a vehicle should in principle include any device suitable for moving a person. These can be air, water and/or land vehicles. In particular, the vehicle can be engine-driven. It can be provided that the vehicle is designed as a motor vehicle, in particular a passenger car or truck.

A light sensor in the context of the present invention is to be understood as a device which is designed to detect the strength and duration of sunlight. Such sensors are usually also referred to as photodetectors, optical or opto-electronic sensors. It can be provided that the photoelectric effect is exploited to enable measurement of the illuminance by detecting an electrical signal. It can also be provided that the light sensor is designed as a photomultiplier, CCD sensor, photodiode, phototransistor and/or photoresistor. While in technology light sensors are usually not only able to measure visible light, but can also generate a signal outside the visible spectrum, it is crucial for the light sensor of the present invention that it is designed to at least detect sunlight to be able to.

It can be provided that the light sensor is designed, in particular exclusively, to detect radiation in the area of emission from the sun and/or only radiation that is visible to humans and/or only radiation that is suitable for determining the circadian rhythm of humans and/or merely radiation which is suitable for counteracting winter depression in humans.

Illuminance describes the area-related luminous flux that hits an illuminated object or person. Their physical size is usually given in the SI unit lux, defined as lumens per square meter. It can be provided that the illuminance is only recorded from a lower threshold value. Sunlight has a very high illuminance. Even on an overcast winter day, for example, the illuminance is already 3500 Ix, while the lighting system of a TV studio or a football stadium usually only produces 1000-1400 Ix.

In principle, solar radiation refers to all radiation emitted by the sun. However, in the context of the present invention, only radiation that is emitted by the sun but has already passed through the earth's atmosphere and has been at least partially absorbed can be understood as solar radiation. In particular, solar radiation is the electromagnetic radiation of the sun, not the particles emitted by the sun.

For the purposes of the invention, a period should be understood as a duration. In particular, this duration does not have to be determined by the maximum possible measurement frequency of the light sensor. In other words, several measurements of the illuminance can be carried out over a certain period of time, which then can be accumulated and combined to form light exposure information.

The data recorded in the measurement by the light sensor is evaluated via a processor. The processor can be designed as a device, in particular as a computing unit, which is suitable for carrying out calculations. The processor can in particular be designed as a microchip, FPGA or ASIC. As an integrated circuit, an FPGA offers the advantage that, once arranged within a circuit, it can still be programmed and adapted according to requirements. An ASIC, on the other hand, offers the advantage that it can be produced cost-effectively in large quantities.

The calculation carried out by the process can include at least one arithmetic operation. However, it can also be provided that the processor uses a model to draw conclusions from the recorded measured values about the level of illumination that actually hits the person. In the simplest case, for example, a multiplication of the illuminance by the time of the period in which the measurement was taken can be provided. Then the light exposure information has the unit Lx*s.

Furthermore, it can be provided that optimal light exposure information is calculated. This offers the advantage that this optimal light exposure information can be taken into account when creating and/or selecting the measures.

It can also be provided that additional information about the measured radiation, additional information about the person who was irradiated and/or additional information about the vehicle are used for the calculation. This achieves the advantage that a particularly precise determination of the light exposure information or the desired light exposure information can be carried out.

A person in the sense of the invention means a human being. It may be intended that the person uses the lighting system and/or the vehicle. It can be provided that the light sensor is designed to determine an illuminance for several people and the processor is designed to calculate a measured illuminance as light exposure information for several people and the display is also designed to display the light exposure information ( en) can also be made available to several people.

The display can be designed differently depending on the requirements profile. In particular, the display can be an analog representation, in particular similar to a speedometer. Such a representation can be captured particularly quickly. Furthermore, it can be provided that the display is designed as a digital display. This offers the advantage that different representations of the light exposure information can be created and displayed to a person at low cost.

Outputting the light exposure information to the person should be understood to mean that the display is designed to display the light exposure information in such a way that it can be perceived and grasped by a person. The information must therefore meet certain physiologically determined minimum standards, e.g. B. the duration of the display as well as the size so that a person can actually capture the information.

The individual components of the mobile lighting system can be designed to be arranged in a vehicle. In other words, the components of the mobile lighting system have a size that is so small compared to the vehicle that they can still be arranged in the vehicle. Alternatively or in addition, the mobile lighting system can have a holding device to enable the mobile lighting system or the components of the mobile lighting system to be attached to or in the vehicle. Overall, this achieves the advantage that the illuminance can be measured with improved accuracy and the use of the mobile lighting system is also simplified for the person using the mobile lighting system.

In particular, it can be provided that the components of the mobile lighting system or the mobile lighting system as a whole can be arranged in an interior of the vehicle. This has the advantage that the person always has access to the mobile lighting system when driving in the vehicle and, in addition, the mobile lighting system is safely protected from the effects of the weather.

Furthermore, it can be provided that at least one component or all components of the mobile lighting system are permanently installed on or in the vehicle. This has the advantage that the light system can be easily used by the person (and, in particular, not forgotten) and is also safely protected from the effects of the weather.

It can be provided that the components of the mobile lighting system are arranged in a mobile phone. This has the advantage that the mobile lighting system is designed to be particularly compact and is also already integrated into everyday life for many people, so that handling or carrying the mobile lighting system does not represent a particularly high level of effort for the person.

Alternatively or in addition, it can be provided that the components of the lighting system within the mobile phone are not dedicated devices, but rather the functionality for the mobile lighting system is provided as a further function of the already existing components of the mobile phone. This has the advantage that costs are reduced compared to a dedicated mobile lighting system because no additional components have to be built and assembled.

In connection with the invention, measures are suggestions or actual changes to a state. Individual measures are presented in more detail below. The measures may involve changes to the vehicle and/or components associated with the vehicle and/or behavior of the person.

The definition of measures should be understood as meaning that a selection is made from a set of possible measures. The set of possible measures can already be determined at the time the processor makes a selection. However, it can also be provided that the measures are created dynamically and, in particular, in the event that no suitable measure can be found in a first step, further measures are calculated. Such an approach achieves the advantage that the computing power used to determine the measure is reduced. This can save costs.

By instructing the vehicle to carry out a measure it is meant that a signal is transmitted to the vehicle, which causes it to carry out the corresponding measures. Further details on how the measures can be designed will be explained in more detail below. As an example, it should be mentioned here that adjusting the route and/or opening a sunroof can be provided as measures. Accordingly, the processor's instruction would be to send a signal to the vehicle to change the route and/or open the sunroof to increase light exposure of the person.

Overall, the mobile light system according to the invention achieves the advantage that a person's exposure to light can be influenced in such a way that they can achieve increased performance. The measures can be designed in such a way that the light exposure occurs in such a way that the person's circadian rhythm is optimally adjusted. This is usually achieved by allowing the person to be exposed to sufficiently strong light in the morning hours and avoiding excessive lighting in the evening hours. If the person works shifts, the light exposure can be adjusted accordingly. In this way, the person's best performance can always be achieved. In addition, light exposure can be adjusted to prevent moodiness or winter blues or to alleviate symptoms. This is usually achieved by ensuring at least a certain minimum level of light exposure per day. Another advantage is the cost. No special light source needs to be provided and/or installed in the vehicle, but natural sunlight is used to arbitrarily increase or decrease light exposure. In the variants in which existing components of the vehicle or devices that the person already owns (e.g. a smartphone) form at least parts of the mobile lighting system, further costs can be saved.

Within the scope of the invention, it is also conceivable that the light sensor can be arranged on a windshield of the vehicle, in particular in a rain sensor module. In other words, at least the light sensor, in particular other or all components, can be attached to a windshield of the vehicle. The light emitted by the sun usually also has to pass through the windshield of the vehicle when it reaches the person in the form of illuminance. Therefore, measuring the illuminance can be simplified by positioning the light sensor on the windshield. In addition, the accuracy of the measurement is improved so that the measured illuminance corresponds more closely to the illuminance that actually hits the person.

Alternatively or in addition to this, it can be provided that at least one light sensor is attached to another window of the vehicle. The at least one light sensor can be the light sensor of the mobile lighting system or another sensor. In other words, two or more light sensors can also be provided be hen. Attaching it to additional panes offers the advantage that the illuminance can be measured from different directions, increasing accuracy. In addition, the mobile lighting system can also add lighting directionality to the light exposure information. This makes it possible to propose and/or implement even more precise measures for increasing or reducing the person's exposure to light.

• - eine Richtung, in welche das Gesicht der Person ausgerichtet ist,
• - eine Öffnung oder Schließung zumindest eines Auges der Person, oder
• - eine Blickrichtung der Person

zu erkennen. Mit anderen Worten kann das mobile Lichtsystem eine Kamera aufweisen, mit der die Blickrichtung der Person, ein Öffnungsstatus der Augen der Person und/oder eine Ausrichtung des Gesichtes der Person gemessen werden kann. Hierdurch wird der Vorteil erreicht, dass ermittelbar ist, ob das Sonnenlicht tatsächlich auf das Gesicht und/oder zumindest ein Auge der Person trifft. Hierdurch lassen sich die Maßnahmen zur Erhöhung und/oder Verringerung der Lichtexposition der Person genauer an die Anforderungen beispielsweise zur Einstellung des circadianen Rhythmus` der Person oder zur Vermeidung und/oder Behandlung einer Winterdepression anpassen.Furthermore, it can advantageously be provided that a camera is provided which is designed for this purpose, at least

• - a direction in which the person's face is oriented,
• - an opening or closing of at least one of the person's eyes, or
• - a line of sight of the person

to recognize. In other words, the mobile lighting system can have a camera with which the direction of the person's gaze, an opening status of the person's eyes and/or an orientation of the person's face can be measured. This has the advantage that it can be determined whether the sunlight actually hits the person's face and/or at least one eye. This allows the measures to increase and/or reduce the person's exposure to light to be adapted more precisely to the requirements, for example, to adjust the person's circadian rhythm or to avoid and/or treat winter depression.

• - eine Müdigkeitserkennung der Person,
• - eine Erfassung, ob sich zumindest eine Hand der Person am Lenkrad befindet,
• - eine Erkennung, wie viele Personen sich im Fahrzeug befinden und/oder welche Plätze des Fahrzeuges besetzt sind,
• - eine Erkennung von Verkehrsschildern

ausgebildet ist. Mit anderen Worten kann die Kamera dazu ausgeführt sein, zumindest eine weitere Funktion bereitzustellen, welche nicht der Erfassung der Beleuchtungsstärke dient. Durch diese zumindest doppelte Funktionalität wird der Vorteil erreicht, dass Kosten gegenüber einer dedizierten Kamera zur Erfassung zumindest einer zur beleuchtungsstärkespezifischen Größe gespart werden können.Furthermore, it is conceivable that the camera is designed to provide at least one vehicle function for the vehicle, in particular the at least one vehicle function as

• - a fatigue detection of the person,
• - a record of whether at least one of the person's hands is on the steering wheel,
• - a detection of how many people are in the vehicle and/or which seats in the vehicle are occupied,
• - recognition of traffic signs

is trained. In other words, the camera can be designed to provide at least one further function that does not serve to record the illuminance. This at least double functionality achieves the advantage that costs can be saved compared to a dedicated camera for recording at least one quantity specific to the illuminance.

Within the scope of the invention, it is further conceivable that the light sensor is also designed to measure at least one spectrum and/or one direction of radiation incident on the light sensor. In other words, it can be provided that the light sensor is suitable for detecting a composition of the measured wavelengths and/or detecting an angle of incidence of the radiation striking the sensor. By measuring the spectrum, the advantage is achieved that the radiation hitting the sensor can be examined to determine whether it comes from sunlight or another light source. The measurement of the direction offers the advantage that a more precise detection of the person's illuminance can be achieved, particularly in combination with a detection of the direction of gaze or the orientation of the person's face.

Furthermore, it is conceivable that the light sensor is also designed to determine whether an ambient light threshold value is undershot or exceeded, with the processor in particular being designed to output a signal for switching on the lighting of the vehicle if the ambient light threshold value is undershot. In other words, a light sensor can be suitable for determining whether the brightness prevailing in the environment is above or below a threshold value. Such light sensors designed in this way are also called ambient light sensors and are often used to provide automatic control of the vehicle's lighting system. As a result, the use of such an ambient light sensor has the advantage that costs can be saved compared to a sensor intended specifically for illuminance detection.

• - Anzeigen eines Vorschlages zu einer Routenanpassung, wobei insbesondere die Lichtexposition der Person auf der angepassten Route einer vorhergesagten Erhöhung oder Verringerung einer Lichtexposition der Person entspricht,
• - Anzeigen eines Vorschlages zum Aufsuchen eines Stellplatzes und/oder automatisches Aufsuchen eines Stellplatzes,
• - Anzeigen eines Vorschlages zum Öffnen oder Schließen eines Sonnendachs und/oder Ein-/Ausklappens einer Sonnenblende und/oder Ein-/Ausfahrens von Jalousien und/oder Ein-/Abschalten von Lichtschutzmaßnahmen,
• - Anzeigen eines Vorschlages zum Verstellen einer Sitzposition,

auf der Anzeige. Die genannten Maßnahmen dienen alle der Erhöhung oder Verringerung einer Lichtexposition der Person. Alternativ oder in Ergänzung zum Anzeigen können sämtliche oben genannten Maßnahmen auch als Signal ausgeführt sein, welches das Fahrzeug dazu veranlasst, die entsprechenden Maßnahmen durchzuführen. Beispielsweise kann die Maßnahme darin bestehen, die Route des Fahrzeugs anzupassen, einen Stellplatz aufzusuchen, oder ein Sonnendach zu öffnen oder zu schließen. Das unterbreiten eines Vorschlages über die Anzeige bietet für den Benutzer den Vorteil, dass dieser selbst entscheiden kann, ob er bereit ist, die vorgenommenen Änderungen zu akzeptieren. Insbesondere in Kombination mit einem zumindest teilweise automatisch fahrenden Fahrzeug bietet eine direkte Beeinflussung des Fahrzeuges über eine der genannten Maßnahmen den Vorteil, dass der Benutzer sich keine Gedanken um die Maßnahmen machen muss und sich während der gesamten Fahrzeit mit anderen Dingen beschäftigen kann. Auch hierdurch wird der Komfort des Benutzers erhöht.Furthermore, it is conceivable that the at least one measure for optimizing the person's exposure to light includes at least one of the following measures:

• - Displaying a suggestion for a route adjustment, in particular the person's light exposure on the adapted route corresponding to a predicted increase or decrease in the person's light exposure,
• - Displaying a suggestion for finding a parking space and/or automatically finding a parking space,
• - Displaying a suggestion for opening or closing a sunroof and/or folding in/out a sun visor and/or retracting/extending blinds and/or switching light protection measures on/off,
• - Display a suggestion for adjusting a sitting position,

on the display. The measures mentioned all serve to increase or reduce the person's exposure to light. Alternatively or in addition to displaying, all of the above-mentioned measures can also be implemented as a signal, which causes the vehicle to carry out the corresponding measures. For example, the measure may consist of adjusting the vehicle's route, finding a parking space, or opening or closing a sunroof. Submitting a suggestion via the display offers the user the advantage that they can decide for themselves whether they are ready to accept the changes made. Particularly in combination with an at least partially automatically driving vehicle, direct influence on the vehicle via one of the measures mentioned offers the advantage that the user does not have to worry about the measures and can concentrate on other things during the entire driving time. This also increases the user's comfort.

All of the measures mentioned for optimizing the person's exposure to light can also be used in particular with regard to the method according to the invention, the vehicle and the computer program product.

According to a further aspect of the invention, a vehicle is provided having at least one mobile lighting system according to the invention.

A vehicle according to the invention thus brings with it the same advantages as have already been described in detail with reference to a mobile lighting system according to the invention.

It is further conceivable that the detection and provision of light exposure information by the mobile light system is designed as a second function of the mobile light system, and the mobile light system is further designed to provide a first function that differs from the second function and is vehicle-specific . In other words, the vehicle has at least one further component which has a vehicle-specific function (for example rain sensor), which provides at least one function for the mobile lighting system according to the invention as further functionality. This achieves the advantage that the costs for the mobile lighting system are reduced compared to a dedicated mobile lighting system in which all or at least some of the components have functionality exclusively for the mobile lighting system.

• - Messen einer Beleuchtungsstärke von Sonnenlicht über einen Zeitraum durch einen Lichtsensor,
• - Berechnen einer Lichtexpositionsinformation zumindest aus der über den Zeitraum gemessenen Beleuchtungsstärke durch einen Prozessor,
• - Ausgeben der Lichtexpositionsinformation an eine Person durch eine Anzeige,

wobei ferner zumindest eine Maßnahme für eine Erhöhung oder Verringerung einer Lichtexposition der Person durch den Prozessor ermittelt und über die Anzeige an die Person ausgegeben und/oder das Fahrzeug (10) angewiesen wird, die Maßnahme durchzuführen.According to a further aspect of the invention, a method for detecting and providing light exposure information for a vehicle, in particular for operating a mobile lighting system according to the invention, is provided, comprising:

• - measuring an illuminance of sunlight over a period of time using a light sensor,
• - Calculating light exposure information at least from the illuminance measured over the period of time by a processor,
• - outputting the light exposure information to a person through a display,

wherein at least one measure for increasing or reducing the person's exposure to light is determined by the processor and output to the person via the display and / or the vehicle (10) is instructed to carry out the measure.

A method according to the invention therefore brings with it the same advantages as have already been described in detail with reference to a mobile lighting system according to the invention and/or a vehicle according to the invention.

Furthermore, it can advantageously be provided that a calculation of a difference between the light exposure information and a target light exposure information, the difference being displayed via the display, is provided, wherein in particular the at least one measure is selected and / or prioritized in such a way that the difference between the light exposure information and the target light exposure information is minimized. In other words, the person can be informed via the display about a difference between the optimal illuminance and the currently existing illuminance, in particular the available measures being selected in an order which corresponds to the difference between the optimal and currently existing illuminance. This has the advantage that the person can clearly see which measure is best suited to achieve the optimal illuminance.

According to a further aspect of the invention, a computer program product is provided, comprising commands which cause the mobile lighting system according to the invention and/or the vehicle according to the invention to carry out the method according to the invention.

A computer program product according to the invention thus brings with it the same advantages as have already been described in detail with reference to a mobile lighting system according to the invention, a vehicle according to the invention and / or a method according to the invention. The method can in particular be a computer-implemented method.

• 1: eine Übersicht der Komponenten des mobilen Lichtsystems,
• 2: ein Fahrzeug mit einem erfindungsgemäßen mobilen Lichtsystem,
• 3: Beispiele für Routen mit besonders geringer und besonders hoher Sonnenlichteinstrahlung, und
• 4: eine mögliche Darstellung verschiedener Routenoptionen auf einer Anzeige, wobei die Routen unterschiedlich starke Sonneneinstrahlung aufweisen.

Further advantages, features and details of the invention emerge from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can be essential to the invention individually or in any combination. It shows schematically:

• 1 : an overview of the components of the mobile lighting system,
• 2 : a vehicle with a mobile lighting system according to the invention,
• 3 : Examples of routes with particularly low and particularly high levels of sunlight, and
• 4 : a possible representation of different route options on one display, with the routes having different levels of sunlight.

In the following description of some exemplary embodiments of the invention, the identical reference numbers are used for the same technical features in different exemplary embodiments.

1 shows a mobile light system 100 for detecting and providing light exposure information for a vehicle 10, having a light sensor 110, which is designed to measure an illuminance of sunlight 20 over a period of time, a processor 120, which is designed to do this, at least from the above to calculate light exposure information measured over the period of time, as well as a display 130, which is designed to output the light exposure information to a person 30. The light sensor 110, the processor 120 and the display 130 can be arranged in a vehicle 10, the processor 120 also being designed to determine at least one measure for increasing and/or reducing the light exposure of the person 30 and via the display 130 to issue the person 30 and/or instruct the vehicle 10 accordingly.

Overall, the mobile light system 100 according to the invention achieves the advantage that a person 30's exposure to light can be influenced in such a way that they can achieve increased performance. The measures can be designed in such a way that the light exposure takes place in such a way that the circadian rhythm of the person 30 is optimally adjusted. This is usually achieved by allowing the person 30 to be exposed to correspondingly strong light in the morning hours and avoiding excessive lighting in the evening hours. If the person 30 works shifts, the light exposure can be adjusted accordingly. In this way, the best performance of the person 30 can always be achieved. No special light source needs to be provided and/or installed in the vehicle 10, but natural sunlight 20 is used to arbitrarily increase or decrease the light exposure. In the variants in which existing components of the vehicle 10 or devices that the person 30 already owns (e.g. a smartphone) form at least parts of the mobile lighting system 100, further costs can be saved.

One idea of the invention is that a person 30 can be supported in carrying out light therapy with the help of the mobile light system 100. In this way, it is possible to determine and inform the person 30 what proportion of the amount of light of a predetermined individual daily dose has already been supplied to the person 30 solely by solar radiation during the time spent in the vehicle 10.

Like in the 1 can be seen, it can be provided that a camera 140 is provided, which is designed to detect at least one direction in which the face of the person 30 is oriented, an opening or closing of at least one eye of the person 30, or a direction of view of the person 30 can be seen.

In an interior 13 of the vehicle 10 (also called the vehicle cabin), it can thus be determined which amounts of light actually reach the eyes of the person 30 through window panes due to solar radiation. An effective illuminance can thus be determined for individual trips and/or cumulatively for several trips, especially on one day.

It can be provided that the light sensor 110 is also designed to determine whether an ambient light threshold value is undershot or exceeded, with the processor 120 in particular being designed to output a signal for switching on the lighting of the vehicle 10 if the ambient light threshold value is undershot . In other words, with the help of at least one light sensor, the illuminance of the sun reaching the interior 13 can be determined light 20 can be detected. The directed solar radiation and the effective amount of light that reaches the eyes can be determined based on a shadow cast and the position of the sun. It can be provided that the contribution of sunlight radiation, which is reflected from surfaces of the vehicle cabin or from outside the vehicle and reaches the eyes, is also taken into account. This further improves the measurement of light exposure.

• - Anzeigen eines Vorschlages zu einer Routenanpassung, wobei insbesondere die Lichtexposition der Person 30 auf der angepassten Route einer vorhergesagten Erhöhung oder Verringerung einer Lichtexposition der Person 30 entspricht,
• - Anzeigen eines Vorschlages zum Aufsuchen eines Stellplatzes und/oder automatisches Aufsuchen eines Stellplatzes,
• - Anzeigen eines Vorschlages zum Öffnen und/oder Schließen eines Sonnendachs 12 und/oder Einklappens einer Sonnenblende und/oder Einfahrens von Jalousien und/oder Abschalten von Lichtschutzmaßnahmen,
• - Anzeigen eines Vorschlages zum Verstellen einer Sitzposition

auf der Anzeige 130.It can be provided that the at least one measure for optimizing light exposure of the person 30 includes at least one of the following measures:

• - displaying a suggestion for a route adjustment, in particular the light exposure of the person 30 on the adapted route corresponding to a predicted increase or decrease in the light exposure of the person 30,
• - Displaying a suggestion for finding a parking space and/or automatically finding a parking space,
• - Displaying a suggestion for opening and/or closing a sunroof 12 and/or folding in a sun visor and/or retracting blinds and/or switching off light protection measures,
• - Display a suggestion for adjusting a sitting position

on display 130.

In other words, the mobile lighting system 100 can display particularly advantageous lighting conditions to the person 30. It can be suggested that driving routes be adjusted and/or parking spaces visited so that, under existing conditions, as much or as little light as possible reaches the eyes of the person 30 in a healthy and pleasant manner.

For example, a person 30 can be specifically suggested trips, in particular by artificial intelligence, when the lighting conditions are expected to be good, in order to explore a city center with canyons of houses ( 3 , left) with little direct sunlight and to drive to places where the vehicle user is more exposed to sunlight ( 3 , right).

The influence the route has on the existing lighting conditions can also be seen from a synopsis of the 3 and 4 . While on the left the 3 the journey runs through a canyon of houses, in which sunlight 20 can only reach the vehicle 10 and thus ultimately the person 30 in a very small area, is when driving along the in the right part of the 3 The route shown has a particularly strong exposure to sunlight 20.

These expected exposures to sunlight 20 can also be as in the 4 shown in connection with a route of the person 30 are presented. This allows the person 30 to see at a glance whether a route has a rather strong or rather low level of illumination. The ones in the 4 The route shown with only one sun can, for example, be the route through the urban canyons as in 3 shown on the left and the route shown with three suns can, for example, correspond to a route along a country road ( 3 right).

• Wie in der 2 dargestellt ist, kann ebenfalls vorgesehen sein, dass der Lichtsensor 110 an einer Windschutzscheibe 11 des Fahrzeuges 10, insbesondere in einem Regensensormodul, anordenbar ist. Die Anbringung einer Windschutzscheibe, insbesondere im Regensensormodul, lässt eine besonders genaue Messung der Beleuchtungsstärke, insbesondere effektiv bei der Person 30 ankommenden Beleuchtungsstärke, zu. Die Integration im Regensensormodul bietet zudem den Vorteil, dass kein weiterer Platz auf der Windschutzscheibe 11 benötigt wird.

It can also be provided that the person 30 the general conditions, such as. B. can specify the adjustment of arrival times at planned destinations or maximum permitted extensions of routes. A new intermediate goal can also be suggested:

• Like in the 2 is shown, it can also be provided that the light sensor 110 can be arranged on a windshield 11 of the vehicle 10, in particular in a rain sensor module. The attachment of a windshield, in particular in the rain sensor module, allows a particularly precise measurement of the illuminance, particularly effective illuminance arriving at the person 30. Integration in the rain sensor module also offers the advantage that no additional space is required on the windshield 11.

As part of the method according to the invention, provision can also be made for a difference to be calculated between the light exposure information and a target light exposure information, the difference being displayed via the display 130, in particular the at least one measure being selected and/or prioritized in this way that the difference between the light exposure information and the target light exposure information is minimized.

For example, the person 30 can be encouraged to be taken to a park and to take a walk under particularly good lighting conditions for a certain time by giving the person 30 e.g. B. the estimated potential for an amount of light supply is shown in advance in relation to the required amount of daylight.

Further measures may also be provided.

Using swarm data from a vehicle fleet, particularly suitable locations and times or a map with current sunlight conditions to support light exposure can be determined and made available centrally on a backend for the vehicle fleet or people 30, in particular vehicle users.

Warnings can be communicated to the person 30 if a mobile lighting system 100 detects that the person 30 is looking directly into the sun or that concentrated light reflections reach the person 30 and this could cause eye damage.

Furthermore, it can also be suggested that the best possible view should be in given directions at certain times. This is particularly advantageous in combination with self-driving vehicles 10, in which the direction of view of at least the driving person 30 plays no role in driving safety. Furthermore, it can also be provided that the people 30 in the vehicle turn to a predetermined angle to the sunlight 20 by adjusting the seating position. In this way, the advantage can also be achieved that the people 30 experience the best possible light exposure.

For the light exposure in the interior 13 of the vehicle 10, the person 30 can specify that special music or radio stations are played.

It can also be provided that a seat massage program is started, in particular automatically and/or specifically for the currently required illuminance.

The specifications for the optimal lighting intensity, especially in the interior 13 of a vehicle 10, can be stored with the individual light exposure in a user profile, in particular on a backend. This achieves the advantage that a person 20 is supported in experiencing optimal light exposure on the same day, even with changing vehicles 10 (e.g. autonomous robo-taxis), so that the person 20 receives the desired light exposure if possible.

The measures proposed here involving solar radiation 20 can be combined with a detection or estimation of further light exposures, such as those e.g. B. can be carried out using a light source in the interior 13 of a vehicle 10 within a building, especially at home.

In this way, an amount of light that is particularly advantageous for a daily dose for the person 30 can be achieved in various ways and the person 30 can be optimally supported in achieving this dose.

In addition, the amount of light that reached the person 30 outside a vehicle 10 can also be estimated for walking routes and/or times when other means of transport are used. These amounts of light determined in this way can be stored in a user profile.

The above explanation of the embodiments describes the present invention solely in terms of examples. Of course, individual features of the embodiments can, if technically sensible, be freely combined with one another without departing from the scope of the present invention.

Reference symbol list

10

vehicle

11

windshield

12

Sunroof

13

inner space

20

sunlight

30

person

100

Light system

110

Light sensor

120

processor

130

Advertisement

140

camera

Claims (12)

Mobile light system (100) for detecting and providing light exposure information for a vehicle (10), comprising: - a light sensor (110), which is designed to measure the illuminance of sunlight (20) over a period of time, - a processor (120 ), which is designed to calculate light exposure information at least from the illuminance measured over the period of time, - a display (130), which is designed to output the light exposure information to a person (30), wherein the light sensor (110), which Processor (120) and the display (130) can be arranged in a vehicle (10), wherein the processor (120) is also designed to determine at least one measure for increasing and / or reducing the person's (30) exposure to light and via the ad (130) to the person (30) to issue and/or instruct the vehicle (10) accordingly. Mobile lighting system (100) according to Claim 1 , characterized in that the light sensor (110) can be arranged on a windshield (11) of the vehicle (10), in particular in a rain sensor module. Mobile lighting system (100) according to Claim 1 or 2 , characterized in that a camera (140) is provided, which is designed to detect at least - a direction in which the face of the person (30) is oriented, - an opening or closing of at least one eye of the person (30), or - to recognize a line of sight of the person (30). Mobile lighting system (100) according to Claim 3 , characterized in that the camera (140) is designed to provide at least one vehicle function for the vehicle (10), in particular the at least one vehicle function as - a fatigue detection of the person (30), - a detection of whether at least one hand the person (30) is at the steering wheel, - a detection of how many people are in the vehicle (10) and / or which seats in the vehicle (10) are occupied, - a detection of traffic signs. Mobile light system (100) according to one of the preceding claims, characterized in that the light sensor (110) is further designed to measure at least one spectrum and/or one direction of radiation incident on the light sensor (110). Mobile light system (100) according to one of the preceding claims, characterized in that the light sensor (110) is also designed to determine whether an ambient light threshold value is undershot or exceeded, in particular the processor (120) being designed to do so If the ambient light threshold value falls below, a signal is issued to switch on the lighting of the vehicle (10). Mobile light system (100) according to one of the preceding claims, characterized in that the at least one measure for optimizing light exposure of the person (30) comprises at least one of the following measures: - Displaying a suggestion for a route adjustment, in particular the person's light exposure (30) on the adapted route corresponds to a predicted increase or decrease in light exposure of the person (30), - displaying a suggestion for finding a parking space and/or automatically searching for a parking space, - displaying a suggestion for opening and/or closing a sun roof ( 12) and/or folding in a sun visor and/or retracting blinds and/or switching off light protection measures, - displaying a suggestion for adjusting a seating position on the display (130). Vehicle (10), having at least one mobile lighting system (100) according to one of the preceding claims. Vehicle (10) after Claim 8 , characterized in that the detection and provision of light exposure information by the mobile light system (100) is designed as a second function of the mobile light system (100), and the mobile light system (100) is further designed to provide a first function, which differs from the second function and is vehicle-specific. Method for detecting and providing light exposure information for a vehicle (10), in particular for operating a mobile lighting system (100) according to one of Claims 1 until 7 , comprising: - measuring an illuminance of sunlight (20) over a period of time by a light sensor (110), - calculating light exposure information at least from the illuminance measured over the period by a processor (120), - outputting the light exposure information to a person (30 ) through a display (130), furthermore at least one measure for increasing or reducing the person's (30) exposure to light being determined by the processor (120) and output to the person (30) via the display (130) and/or that Vehicle (10) is instructed to carry out the measure. Procedure (10) according to Claim 10 , characterized in that further provision is made for calculating a difference between the light exposure information and a target light exposure information, the difference being displayed via the display (130), wherein in particular the at least one measure is selected and / or prioritized in such a way that the Difference between the Light exposure information and the target light exposure information is minimized. Computer program product, comprising commands that cause the mobile lighting system (100) to act according to one of the Claims 1 until 7 and/or the vehicle (10) according to one of the Claims 8 or 9 the procedure according to one of the Claims 10 or 11 executes.

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