DE202021102737U1 - Intelligent bottle cap with UV-C disinfection - Google Patents

Abstract

UV cleaner arranged in a bottle cap and set up for cleaning a liquid in a bottle, comprising:
At least one UV light source, the light source being designed as an LED light source and generating UV light in a UV light wavelength range from 250 to 280nm, preferably in a range from 260 to 270nm, in particular with a peak wavelength in one Range of 265nm.

Description

The present invention relates to a bottle closure for monitoring drinking behavior and for cleaning a liquid in a bottle. The present invention also relates to a bottle with a bottle closure. The present invention also relates to a UV cleaner arranged in a bottle cap. The present invention also relates to a level meter arranged in a bottle closure. The present invention also relates to an operating device arranged in a bottle closure.

Water disinfection by means of UV light is known in principle. The basic principle of such disinfection is that a liquid is irradiated with high-energy light in the UV range (UVC). The radiation kills bacteria and pathogens in the liquid.

So that such water disinfection is also possible in everyday life, drinking bottle systems are already available on the market that can disinfect a liquid such as water with UV light. The energy required for disinfection to generate the UV light is taken from an integrated electrical energy storage device, which is part of the drinking bottle system.

The problem with the previously known solutions, however, is that they work inefficiently and in some cases have a high power consumption during the UV cleaning process. Only a few UV cleaning cycles are therefore possible with the known systems. In addition, known systems sometimes do not offer a sufficient UV dose to carry out effective cleaning.

It is therefore desirable to provide efficient and energy-saving water disinfection that is suitable for everyday use.

Another problem that arises is that people often forget to drink enough fluids in everyday life. There is therefore a need to record and understand drinking behavior throughout the day. In order to enable monitoring of drinking behavior, a level measurement is required accordingly. In isolated cases, drinking bottle systems are also known for this, which have an integrated drinking quantity measurement.

The problem with measuring the amount of drinking in a drinking water bottle, which should be carried out in a non-contact and hygienic manner, is that the level measurement in the bottle is difficult to implement and that there are measuring ranges that are difficult to detect. For example, it is challenging to be able to precisely determine a very high level in a drinking bottle. The transparency of water also leads to further problems, since the surface of the water or the water level has poor reflection properties and is difficult to measure with optical sensors, for example.

In the case of transparent bottles, such as glass or PET bottles, a large number of problems arise with certain sensor systems, such as, for example, with optical sensor systems for detecting the filling quantity. The problem here is that light can enter the transparent bottle from the outside and thus influence the measuring system. Another problem is that emitted or emitted light from an optical fill level sensor emerges from a transparent bottle.

It is therefore desirable to provide a system with which, on the one hand, drinking water disinfection can be implemented as simply, energy-saving and reliably as possible and, in addition, drinking behavior can be recorded and evaluated as precisely and permanently as possible.

Another challenge is to provide sufficient security when using a system that works with UV light water disinfection. Since UVC light is a high-energy light, it can be harmful if, for example, it shines on the skin or in the eyes of a person. Corresponding security measures are therefore also a challenge.

The object of the present invention is therefore to address one of the above-mentioned problems, to improve the general prior art or to provide an alternative to what is known up to now. In particular, a solution is to be provided with which an effective, energy-saving and safe cleaning of a liquid suitable for consumption in a bottle, in particular water, is provided. In addition, in particular a solution is to be provided with which easy handling and monitoring of drinking behavior is made possible.

According to the invention, a UV cleaner according to claim 1 is proposed for this purpose.

Accordingly, a UV cleaner is proposed which is arranged in a bottle cap and which is set up to clean a liquid in a bottle. It is therefore proposed that the UV cleaner is part of the bottle cap and is accommodated in the bottle cap. The bottle cap can also be referred to as a closure cap or cap. The UV Cleaner can, for example, be encapsulated and embedded in the bottle closure in a watertight manner. The UV cleaner is designed in such a way that it can emit UV light into an interior of a bottle when the closure is connected to the bottle in order to clean a liquid introduced into the bottle by means of irradiation. For example, the closure can be designed with a rotary thread in order to connect it to the bottle.

For this purpose, the UV cleaner comprises at least one UV light source, the light source being designed as an LED light source and generating UV light in a UV light wavelength range from 250 to 280 nm. Light sources are also known as light sources or illuminants. It is therefore proposed to use an LED as a light source in order to generate the UV light for cleaning the liquid. It was recognized that the use of an LED that emits light in a wavelength range from 250 to 280 nm enables efficient cleaning of the liquid and at the same time results in energy-saving operation. The UV light source is arranged on the bottle cap in such a way that it can emit UV light directly into an interior area of a bottle or indirectly through an optically translucent material. It goes without saying that the intended position of the UV cleaner is that position when the bottle cap is mechanically coupled to the bottle, that is to say, for example, the bottle cap is screwed onto a thread of the bottle.

With the bottle cap or with the UV cleaner, germs in drinking water can be reduced by neutralizing or killing them with the UV light.

The UV light wavelength range is preferably in a range from 260 to 270 nm, with a peak wavelength of 265 nm. This wavelength range is particularly efficient, so that an irradiation time for UV cleaning can be shortened. This saves energy.

The UV light source preferably has at least one high-performance LED, which in particular has a cooling housing. It is therefore proposed that the UV light source be designed as a high-power LED. A high-power LED is also known as a "high power LED". In principle, an LED that is operated with at least 350mA [milliamps] can be referred to as a high-power LED. It is also proposed to use at least one high-power LED. So more than one high-power LED can be used. The cooling housing is primarily used to dissipate heat from the high-performance LED and to store heat.

The cooling housing can also be provided as a fastening means for temperature monitoring in that a temperature sensor is fastened to the cooling housing. It is therefore proposed to use a high-power LED that is operated for a short time instead of using a less powerful LED with which irradiation has to be carried out for a longer period of time. This is because it has been recognized that a user of a drinking bottle with a UV cleaner often cleans the liquid directly before drinking the liquid. In order not to unnecessarily lengthen the waiting time until the cleaning process is completed, it is accordingly proposed to use a powerful LED in order to keep the cleaning process short.

The cooling of the high-performance UVC-LED is realized by means of thermal capacitance, which transfers the heat in a controlled and uniform manner to the closure housing of the bottle cap. In addition, it is proposed that the current temperature be continuously recorded using a sensor.

A powerful UVC LED is therefore proposed to disinfect the liquid in the bottle.

Furthermore, it goes without saying that the interior of the bottle can also be sterilized without any liquid in it, for example if the bottle has not been used for a long time.

By using a power UVC LED, it is also possible to clean drinking bottles or drinking containers with a low reflective surface. For example, a high-performance LED can be used to clean with UV light in a glass bottle. The use of UVC cleaning within opaque devices or bottles with corresponding internal reflective properties, such as stainless steel, is more ideal, for example, for a cleaning process and requires lower UVC performance.

The UV cleaner preferably also comprises an acceleration sensor for detecting an acceleration which acts on the bottle closure, the light source being switched off if the detected acceleration exceeds an acceleration limit value. It is therefore proposed that the UV cleaner also include an acceleration sensor. The movement of the UV cleaner or the bottle cap in which the UV cleaner is accommodated is monitored with the acceleration sensor.

In a particularly preferred embodiment, the acceleration sensor is as Triaxial acceleration sensor designed to detect acceleration in three directions (x, y, z).

The acceleration sensor has at least two functions. On the one hand, the local position of the bottle cap or the UV cleaner is determined with the acceleration sensor, preferably in relation to a perpendicular direction.

In addition, the acceleration sensor serves as a safety device to switch off the light source if the bottle cap or the UV cleaner contained in it is moved during UV cleaning. To ensure this safety function, an acceleration limit value is specified. If an acceleration value recorded by the acceleration sensor exceeds the limit value, the light source of the UV cleaner switches off. This advantageously ensures that the UV cleaner only triggers irradiation with UV light in a safe position. A safe position is, for example, when the bottle cap is screwed to the bottle and the bottle is on a flat surface.

The built-in sensors prevent the UVC cycle of the bottle cap from being activated if the cap is outside the bottle or the bottle is tilted too much.

The UV cleaner preferably also includes a temperature monitor for monitoring an operating temperature of the light source, at least one temperature sensor being arranged in the area of the light source to monitor the operating temperature. It is therefore proposed that the UV cleaner also has at least one temperature sensor with which the operating temperature in the area of the light source is measured. For example, a temperature sensor can be arranged on a cooling housing of the LED. The temperature sensor is used to protect the light source from overheating. If, for example, a critical temperature value is measured by the temperature sensor, the light source of the UV cleaner can be switched off. In addition, the temperature sensor can be used to indirectly determine temperature measurement data of the liquid. The temperature measurement data can thus be shown on a display or signaled in some other way, for example by transmitting the temperature data to a receiving device or terminal device such as a smartphone.

It is thus advantageously achieved that the light source is protected from damage and, in addition, temperature data of the bottle can be used, for example in order to display the temperature data.

In order to protect the UVC LED or other components of the bottle closure, such as an accumulator or other electronic components of the cap, it is proposed to equip the bottle closure with a thermal sensor which does not allow activation of the UVC cleaning at too high temperatures. After cooling down, the bottle cap with the UV cleaner is automatically functional again.

It is preferably proposed that the liquid be irradiated with UV light when a rest timer has expired, the rest timer starting when at least one acceleration sensor for detecting an acceleration acting on the bottle closure is below an acceleration limit value. Accordingly, it is proposed that the irradiation of the liquid with UV light should only be triggered after a specified period of time. The timer can be stored in a control unit, which is also part of the UV cleaner. In addition, it is proposed that the timer is only triggered when an acceleration sensor or the previously described acceleration sensor for detecting an acceleration that acts on the bottle cap or UV cleaner is below an acceleration limit value. It is therefore proposed that the timer is only triggered when the bottle is no longer or only slightly moved, that is to say an acceleration value detected with an acceleration sensor is below the limit value for the acceleration.

In a specific example, a set timer of 15 seconds runs out when a drinking bottle with the UV cleaner has been placed on the table and the bottle is no longer moved. It is thus achieved in an advantageous manner that the UV cleaning is only triggered when the bottle cap or the UV cleaner has expired for the specified period of time of the timer. During this time, the liquid in the bottle can come to rest and efficient UV cleaning can be carried out. It goes without saying that the duration of the timer is chosen so that the liquid has enough time to assume a steady state of motion.

Additionally or alternatively, it is proposed that the liquid be irradiated with UV light when a trigger signal is received via a communication unit, with at least the light source being activated as a function of the received trigger signal. It is therefore proposed that UV cleaning of the liquid is triggered by the UV cleaner receiving a signal via the communication unit that the UV cleaner triggers, i.e. triggers. An external signal can be received via the communication unit, for example, that was sent out by a terminal of the user. In a specific example, the communication unit is designed as a Bluetooth Low Energy (BLE) interface and is set up to receive a trigger signal from a smartphone. In this way, it is achieved in an advantageous manner that the UV cleaning can be triggered remotely very easily and conveniently.

In addition or as an alternative, it is proposed that the liquid be irradiated with UV light if a spatial position of the bottle closure measured by a position sensor is below a spatial position limit value. It is therefore proposed that the cleaning process with UV light is only triggered when the UV cleaner or the bottle cap is in a fixed or defined spatial position. The defined spatial position can be, for example, a defined spatial position in relation to a perpendicular direction. If the spatial position of the UV cleaner or the bottle cap deviates too far from the predefined spatial position, the cleaning process is not triggered.

It has been recognized that effective cleaning with UV light takes place when the UV light is irradiated onto the liquid at an angle that is as perpendicular as possible. If the bottle is crooked, for example, the UV light is scattered more strongly due to the inclined position of the liquid level, which reduces the cleaning efficiency.

An acceleration sensor which is set up to detect the spatial position of the UV cleaner or the bottle cap is preferably used as the position sensor. For example, the acceleration sensor described above is used, which is set up to determine both the acceleration and the spatial position. For this purpose, the acceleration sensor can be designed, for example, as a triaxial acceleration sensor.

For safety reasons and to ensure successful disinfection, it is therefore proposed that the function of starting the UV cleaner can only be started when the bottle is in an upright position. If the acceleration sensor is triggered during a running UVC cycle, i.e. if the bottle is moved, the process is aborted for safety reasons.

After activation, the light source preferably generates UV light for a predetermined cleaning period. The cleaning time with UV light can be variable and, for example, can be specified in a variable manner as a function of a detected fill level. In a particularly preferred embodiment, the cleaning time is in a range from 30 seconds to 300 seconds, in particular the cleaning time is 90 seconds. It goes without saying that the activation relates to triggering the irradiation of the liquid with UV light. The activation can take place in different ways, for example as described above, after a rest timer has expired, a trigger signal has been received and a fixed spatial position is maintained.

It is preferably proposed that the UV cleaner also comprises a control unit which is at least set up to control the UV cleaner. In addition, the control unit is set up to process received sensor data and control commands, such as the sensor data of the temperature sensor or a trigger signal. It goes without saying that the control unit is arranged in or on the bottle closure. The control unit can be designed as a microcontroller, for example, and arranged on a control board in the bottle cap. The control unit thus serves as a central logic circuit that takes over the control and signal processing of the electrical components that are arranged on or in the bottle cap.

In an advantageous further development, the UV cleaner comprises a safety lamp which is set up to visually display the UV cleaning process. The safety lighting means can for example be designed with at least one LED and can be switched on by the control unit when the UV light source is active and emits UV light. Two colored blue LEDs, for example, can be arranged as safety lighting means on the side of the bottle closure facing the fluid and illuminate the water with colored light. When a transparent bottle is used, it can be seen from the outside whether a cleaning process for the liquid has already been completed. The safety illuminant thus serves as an indicator for the ongoing cleaning cycle. The side facing the fluid can also be understood as the underside of the closure. Additionally or alternatively, a safety lamp or the safety lamp can also be arranged on an outside of the bottle closure if, for example, an opaque bottle is used. The safety lighting means can also be referred to as indication lights. These show the status of the cleaning process.

With the proposed UV cleaner, water filled into a bottle can be sterilized efficiently and in an energy-saving manner using a built-in UVC LED.

According to the invention, a level meter is also proposed.

The level meter is arranged in a bottle cap and is set up to determine the amount of liquid in a bottle. It is therefore proposed that the level meter is part of the bottle closure and is received in the bottle closure. The level meter can for example be encapsulated and embedded in the bottle closure in a watertight manner. The fill level meter is designed such that it can detect a fill level of a liquid in an interior of a bottle in order to detect the fill level or fill quantity of a liquid introduced into the bottle.

The level sensor is intended to record the amount of drink.

To determine the amount of liquid in a bottle, the fill level meter comprises an optical fill level sensor for detecting a length distance of the sensor to a liquid level. An optical sensor for determining a spatial length is therefore proposed. A path or a distance can be determined with the sensor, namely that or that to the surface of the liquid level. It goes without saying that an optical length measurement can take place in different ways with different sensors. In principle, therefore, a sensor is proposed which, independently of the physical measuring principle, is suitable for measuring the distance to an object in a contactless manner, that is to say in the present case to the liquid level.

In the present case, the optical sensor is used to detect a filling quantity or a filling height of a liquid in the bottle. The fill quantity or fill level is either measured directly or determined indirectly by a calculation based on the measurement with the fill level sensor. It goes without saying that the fill level sensor is arranged in or on the bottle cap in such a way that it can detect the amount of liquid in the interior of the bottle or measure the liquid level in the interior of the bottle. It is also understood that for this purpose the fill level sensor is arranged on a side of the bottle closure facing the liquid so that a direct measurement can be implemented in an interior of a bottle.

The level sensor can also be understood as a distance sensor that measures the distance to the liquid level.

It is also proposed that the fill level meter have a diffuser, the diffuser being arranged between the fill level sensor and the liquid level to be detected.

It has been recognized that a diffuser arranged in front of the optical sensor enables improved detection of the liquid level within a bottle.

It was also recognized that a diffuser enables the liquid level to be determined locally very close to the sensor, i.e. when the fill level in the bottle is very high. For example, a small distance between the liquid and the level sensor of only 1 cm can be measured.

In known level sensors which have an optical sensor, a diffuser is normally not used, since the diffuser disperses the optical signal emitted by the optical sensor. In the present case, however, it was recognized that a diffuser is advantageous for the detection of transparent liquids. For example, a detection of the liquid level of water is difficult because the surface of the water reflects poorly. However, if a diffuser is used that scatters the optical measurement signal of the optical sensor, the surface of the liquid of a transparent liquid can be detected in an improved manner. In addition, a diffuser also makes it possible to detect very small distances between the sensor and the liquid level, i.e. when the liquid level in the bottle is very high. Some optical sensors, such as TOF sensors (Time Of Flight sensors), can only measure greater distances. By using a diffuser, even the smallest distances to the liquid level can be measured precisely.

It goes without saying that in the present case an optical diffuser is used which is designed to be optically transparent so that an optical signal generated by the optical sensor can pass through the diffuser to determine the distance. A diffuser is also known as a diffuser and is an optical component that is used to diffuse light.

The diffuser located between the sensor and the water surface, which is made of special PET material, for example, breaks the optical measurement signal of the level sensor, for example a light beam emitted by the optical sensor. This means that meaningful measured values of the sensor are obtained. The use of a diffuser is unusual because it normally only worsens the accuracy of the measurement. In the present case, however, a special application was identified in which a diffuser is advantageous. With this it can be achieved that the water surface, especially also at small distances to the sensor, has a represents a sufficient reflector and the level sensor or level meter records usable values.

The diffuser is preferably formed from a UV light-stable plastic material, in particular from PET material. PET is the abbreviation for polyethylene terephthalate, a thermoplastic.

The fill level sensor is preferably designed as a time-of-flight sensor. The fill level to be determined for the calculation or determination of the consumption quantity is thus implemented with a fill level meter which is implemented as a time-of-flight sensor. The time-of-flight sensor implements a length measurement with a laser signal, for example with a vertical surface-emitting cavity laser.

In a further preferred embodiment it is proposed that a calculation unit be provided which is set up to calculate an amount of liquid as a function of the detected length spacing. The amount of water you drink is recalculated after each measurement. People have been drinking when the level has decreased from one measurement to the next. When the fill level increased, the user filled the bottle with liquid. Both changes are logged by the calculation unit and can be transmitted via a communication unit, for example to a terminal with an app. The calculation unit is implemented, for example, as a microcontroller in the bottle closure.

In one development, the level meter also includes a storage unit, at least one bottle profile being stored as data on the storage unit and the at least one profile including geometric bottle data. An indirect method for determining the filling quantity is therefore proposed. This is a method in which the current filling quantity is determined by measuring the distance between the water surface and a fixed point, in the present case, the sensor. From this distance, which can also be understood as a distance, the amount of liquid in it can be calculated, taking into account the geometry of the bottle. Corresponding profiles are stored for each bottle, namely in the memory unit and these profiles can preferably be selected, for example if the closure is used for different types of bottles.

In a particularly preferred embodiment, the memory unit is designed to be non-volatile.

In addition or as an alternative, it is proposed that the memory unit be designed as a ring memory that stores measurement data from the fill level sensor so that it can be called up for a predetermined storage period. A finite data memory is therefore proposed which, for example, uses the FIFO principle known from information technology ("First in - First Out").

In a preferred embodiment, the calculation unit is set up to calculate an amount of liquid from the length distance detected by the fill level sensor and the bottle data stored in the memory unit.

In an advantageous development, the detection of the linear distance with the optical fill level sensor is triggered when a predetermined rest timer has expired, the rest timer starting when at least one acceleration sensor for detecting an acceleration that acts on the bottle cap is below an acceleration limit value. It is therefore proposed that the water level measurement should not be triggered and thus no incorrect distances should be measured if the rest timer has not yet expired.

A measurement can therefore only be started if a rest phase of the bottle has been recorded by means of the built-in acceleration sensor. The rest timer can be 15 seconds, for example, and is triggered after previous movement. This delay allows sufficient time for the water surface to calm down after the bottle has been used. The rest timer can be the same as that described above for the UV cleaner.

Additionally or alternatively, it is proposed that the detection of the linear distance is triggered with the optical fill level sensor when a trigger signal is received via a communication unit, the fill level sensor being activated as a function of the received trigger signal.

In addition or as an alternative, it is proposed that the detection of the linear distance is triggered with the optical fill level sensor when a spatial position of the bottle closure measured with a position sensor is below a spatial position limit value.

In a preferred embodiment, it is proposed that the optical fill level sensor, after activation, measure the length of the sensor from the liquid level for a defined measuring period.

In a preferred embodiment, the measurement time is in a range from one second to 30 seconds, in particular the measurement time is 15 seconds.

In an advantageous development, the level meter also comprises a position sensor for detecting an angular difference between the position sensor and the perpendicular direction, the detection of the longitudinal distance to the liquid level being triggered when a detected angular difference with the perpendicular direction is below a limit angle, preferably the limit angle is below 10 °, especially in a range of about 7.5 °.

In an advantageous embodiment, the position sensor is designed as an acceleration sensor which is set up to detect an absolute position of the fill level meter or the bottle closure. The position sensor can be designed, for example, as a triaxial acceleration sensor. In addition, a combination sensor comprising a position and acceleration sensor can be provided.

It is therefore suggested that measured values only be taken into account if the bottle does not deviate from the perpendicular by more than a defined angle and is therefore upright and straight.

It is preferably proposed that the level meter also comprises a control unit which is set up to process the determined amount of liquid as measurement data and in particular to transmit it to a display device, to a terminal and additionally or alternatively to a memory unit. The control unit can be the same control unit as in the UV cleaner described above.

With the bottle cap described above or with the fill level sensor, the daily drinking behavior of a user can thus be measured and the drinking behavior can thus be monitored and information about the drinking behavior recorded and made available to a terminal.

In a further embodiment according to the invention, an operating device according to claim 17 is proposed.

The operating device is arranged in a bottle cap, preferably in the bottle cap described above, and is provided at least for displaying and setting various bottle operating modes.

The operating device comprises at least a multiplicity of controllable lighting means, the lighting means being arranged on an outside of the bottle closure.

It is therefore proposed to provide lighting means for displaying a status on the top of the bottle closure. With these lamps, the bottle cap can basically communicate with the user. By using a large number of illuminants, a large number of operating states can be displayed.

In this way, information on the status of the disinfection can be signaled to the user via the lamps.

At least four controllable white LEDs and at least one controllable RGB LED are preferably provided. These serve as display means, for example to display a set operating state. It is therefore proposed to provide status LEDs on the top of the bottle closure.

In addition, the operating device comprises a control unit, the control unit being set up to set a level mode in which a current amount of liquid determined with a level meter is displayed by activating the lighting means by assigning different predetermined amounts of liquid to different lighting means.

In a first specific example, a detected amount of liquid of 25% is assigned to a first LED, 50% to a second LED, 75% to a third LED and 100% to a fourth LED. If the amount of liquid changes, for example because a user takes water from the bottle, the current fill level can be displayed with the LEDs.

In the filling level mode and additionally or alternatively in the UV mode, the white LEDs are preferably activated to display the determined amount of liquid or the remaining time.

Additionally or alternatively, it is proposed that the control unit is set up to set a reminder mode in which a drinking reminder is generated by activating the lighting means when a liquid withdrawal detected with a level meter is below a liquid withdrawal requirement within a specified drinking period. It is therefore proposed that an illuminant be arranged on the bottle cap, which illuminates when it has been recognized that a user has not drunk enough for too long a period of time. In this case, the control unit controls a specified light source. This stimulates the user to take liquid from the bottle. If the amount drunk is below a predetermined minimum amount spread over time, the user will For example, a flashing signal encourages you to drink more.

With the bottle cap or the operating device, a user can therefore be reminded to drink a certain amount of liquid every day.

It is preferably proposed that an RGB LED be activated in the reminder mode. By using an RGB LED, the drinking reminder can be displayed with a clearly recognizable signal color in order to attract the user's attention more quickly.

Additionally or alternatively, the control unit is set up to set a UV mode in which a remaining period of a UV cleaning process is displayed by controlling the lighting means by assigning different predetermined times to different lighting means.

In a second specific example, a remaining time of a UV cleaning process of 25% is assigned to a first LED, 50% to a second LED, 75% to a third LED and 100% to a fourth LED. In this way, it can be seen from the outside how long the sterilization process is still going on with a UV cleaner.

In a preferred development of the operating device, it is proposed that the controllable lighting means switch off after activation and after a stored energy-saving timer has expired. It is therefore proposed that the lighting means switch off again automatically after a defined period of time after they have been activated. If, for example, a button that is part of the bottle cap is pressed and triggers a level indicator, the lamps switch off again when the energy-saving timer has expired.

The energy-saving timer is preferably stored in a control unit which is set up to control the lighting means. The control unit can be the control unit described above.

In a particularly preferred development of the operating device, it is proposed that the white LEDs are arranged between a display diffuser and the RBG LED. The white LEDs, the display diffuser and the RGB-LED are preferably arranged on an upper side of the bottle closure. This advantageous arrangement of the LEDs provides an energy-saving display means with which a large number of operating states of the bottle closure or the bottle can be displayed.

In a further embodiment, the operating device also comprises an input means, the input means being arranged on an outer surface of the bottle closure. The input means is therefore to be understood as an input interface with which a user can trigger various functions. The bottle cap can therefore be used offline with the input means.

The input means is preferably formed from at least one capacitive sensor surface.

In a particularly preferred embodiment, the input means is formed from three capacitive sensor surfaces. For example, the first sensor surface can trigger a snooze function or a data connection with a terminal can be triggered by touching the sensor surface. This can be understood as a coupling function. A second sensor surface can be provided to trigger a level measurement. A third sensor surface can be provided to trigger a cleaning process by means of UV radiation.

It is therefore proposed to design the bottle closure with touch sensors on the top of the bottle closure. These can be used to control the electronics in the bottle cap.

The input means is set up to trigger a disinfection process with a UV cleaner and, additionally or alternatively, the input means is set up to trigger a level measurement with a level meter. It is therefore proposed that, for example, a UV cleaning process with the UV cleaner described above can be triggered with the input means. In addition, a level measurement can also be triggered with the level sensor described above. The detected fill level can then be displayed on the operating device as described above.

The sterilization can therefore be started both via the buttons located on the bottle cap and via an external signal that is received, for example, from an external device via the communication interfaces that has an app.

With the input means, the bottle cap can thus be controlled offline or haptically, as well as online via an external specification that is received via a communication unit.

In a further embodiment according to the invention, a bottle closure according to claim 21 is proposed.

Accordingly, a bottle closure for monitoring drinking behavior and for cleaning a liquid in a bottle is proposed. The bottle closure comprises a closure housing, the closure housing having a side facing the fluid.

In addition, the bottle closure comprises a control unit arranged in the closure housing. This preferably has a processor core and is designed to be freely programmable and enables desired functionalities to be implemented without an additional microcontroller.

The bottle closure also includes a controllable UV cleaner, the UV cleaner being arranged on the side of the closure housing facing the fluid and having at least one light source. The light source is preferably an LED light source. The light source generates UV light for cleaning a liquid in a UV light wavelength range.

In addition, the bottle closure also includes an optical fill level meter, the fill level meter being arranged on the side facing the fluid and being set up to determine a liquid level.

It is also proposed that the control unit controls the UV cleaner as a function of the liquid level determined with the fill level meter. It is therefore proposed that the UV cleaner be controlled as a function of the liquid level or the amount of liquid that is detected with the level meter.

The control of the UV cleaner as a function of the specific liquid level can for example take place in such a way that the duration of the irradiation of the liquid to be cleaned with the UV cleaner is made dependent on the detected fill level of the liquid.

In addition or as an alternative, an irradiation intensity of the UV cleaner can also be adapted as a function of the fill level, for example by dimming the light source as a function of the specific liquid level.

This is because it has been recognized that a smaller amount of liquid can be irradiated with less UV light in order to clean it sufficiently. This advantageously ensures that the UV cleaner is operated as required and thus energy is saved.

The required UVC dose is therefore adapted to the correspondingly measured fill level. Therefore, when the bottle is only half full, a lower dose of UVC is emitted and the cycle is shortened.

A duration of illumination with UV light is preferably adapted as a function of the liquid level determined with the fill level meter. The duration of the illumination corresponds to the specified duration of time described above for the UV cleaner.

In an advantageous development of the bottle closure, it is proposed that the control unit be set up to activate the light source when a flat or flat surface of the liquid level is detected with the level meter. It is therefore recorded whether the water level is horizontal. This is to prevent a sterilization process from being triggered by irradiation if the bottle is tilted.

It is preferably proposed that the control unit arranged in the bottle cap is set up to control the UV cleaner in such a way that the light source generates an emitted amount of light as a function of the detected liquid level.

In a preferred embodiment, the control unit is set up to control the UV cleaner in such a way that the amount of light generated is generated proportionally to the specific liquid level. This saves energy, since the intensity of the lighting is reduced as the fill level decreases. The light intensity of the UV cleaner can be reduced, for example, by dimming.

The bottle closure preferably also comprises a rechargeable energy store for supplying energy to the electrical components of the bottle closure.

In a preferred development, the bottle closure also includes a non-volatile memory unit for storing sensor data, at least one bottle profile being stored as data on the memory unit and the at least one profile including geometric bottle data.

In addition or as an alternative, it is proposed that the memory unit be designed as a ring memory that stores measurement data from the fill level sensor so that it can be called up for a predetermined time.

The bottle closure preferably also comprises at least one acceleration sensor for detecting an acceleration which acts on the bottle closure.

In addition, it is preferably proposed that the bottle closure also comprises a position sensor for detecting an angular difference between the position sensor and the perpendicular direction, the detection of the longitudinal distance from the liquid level being triggered when a detected angular difference with the perpendicular direction is below a predetermined limit angle. In a preferred embodiment, the critical angle is below 10 °, for example 7.5 ° to the perpendicular direction. The proposed position sensor can be designed as an acceleration sensor, preferably as the acceleration sensor described above.

It is preferably proposed to use an acceleration sensor which is set up to detect the acceleration which acts on the bottle closure and which is also set up to detect the angle difference between the position sensor and the perpendicular direction. A combination sensor is therefore proposed. An example of such a combination sensor is a triaxial acceleration sensor.

In a further preferred embodiment it is proposed that the bottle closure also comprises a communication unit, the communication unit being set up for data exchange with a terminal. The communication unit is preferably designed as a Bluetooth interface, particularly preferably as a low-energy Bluetooth interface. It is therefore proposed that a communication unit be used with which, on the one hand, external signals can be received in order to control components of the bottle closure or to receive data from an external device, which are then stored, for example, in a memory unit implemented in the bottle closure. In addition, data can also be sent via the communication unit, for example stored measurement data from the level meter.

To read out the stored information, the bottle cap is therefore equipped with a data interface, for example with a low-energy Bluetooth interface. All available parameters that are implemented in the bottle closure can be read out or specified via these, for example the timers described above, recorded measurement data or bottle profiles. If there is an established data connection with an external terminal device, it is also possible to save events and their values in a non-volatile manner so that they can be transmitted to the evaluation software as soon as a connection is established again.

In addition, in a preferred development of the bottle cap it is proposed that it also include two colored status LEDs to display a current disinfection status, the control unit being set up to set a disinfection mode in which a current operating state of the UV cleaner is activated by activating the two statuses LEDs is displayed, a first operating state being assigned to the first status LED and a second operating state being assigned to the second status LED.

According to an advantageous development, it is proposed that the bottle closure also comprises an operating device, the operating device being designed according to one of the preceding embodiments.

According to a particularly preferred development, it is proposed that the UV cleaner of the bottle closure be designed according to one of the above embodiments.

In addition or as an alternative, it is proposed that the level meter of the bottle closure be designed according to one of the above embodiments.

It is also preferably proposed that the electrical components of the bottle closure are arranged separately on a sensor board, a control board and an operating board, with at least the UV cleaner and the level meter being arranged on the sensor board, and at least the control unit, the communication unit and the Storage unit are arranged, and at least the operating device is arranged on the control board.

It is therefore proposed to separate the sensors, controls and operating elements from one another. In the event of a malfunction of one of the circuit boards, a defective circuit board can be replaced easily. It is proposed that the sensor board is arranged on the side facing the fluid. The sensor board preferably has the LED light source for UVC disinfection, the distance sensor or level sensor for level measurement, the temperature sensor and two colored safety light sources that are designed as indicator LEDs, as described above.

In addition, it is proposed in a preferred embodiment that the electrical components of the bottle closure are arranged in the closure housing in a watertight manner.

The closure housing is preferably formed from a tight, welded plastic housing, and in particular has a Screw thread with which the cap can be screwed onto an existing bottle.

In an advantageous development of the bottle closure, it is proposed that the bottle closure have an inclined position means on the side facing the fluid in order to prevent the side facing the fluid from resting flat on a surface. The misalignment means can be designed, for example, as a guide nose with which the bottle closure can be inserted into a bottle neck. The guide nose thus prevents the side of the bottle closure facing the fluid from being able to lie flat on a straight surface. The inclination means ensures that the bottle closure, when it is not attached to the bottle, is inclined. This is advantageous, for example, if the bottle closure has a position sensor for detecting an angle difference to the perpendicular direction, as described above. In this example, no UV cleaning process can be triggered, since the tilting means prevents the defined critical angle from being reached. Thus, as an advantage, security can be increased.

In addition, according to the invention, a bottle with a bottle stopper is proposed, the bottle stopper being designed according to one of the preceding embodiments. The bottle is preferably designed as a glass bottle. Borosilicate glass is particularly preferably proposed as the material for the glass bottle. By using borosilicate glass, the UV-C LED can also be used with glass. The transmission of UV light through the glass is so low that there is no danger during cleaning due to UVC light emitted outside the bottles.

Electrical components that are arranged in a bottle cap have been described here. It goes without saying that the bottle closure has an energy store for supplying the electrical components.

The energy store is preferably designed as a rechargeable energy store. The rechargeable energy storage device is preferably charged via a USB-C interface.

In summary, an intelligent UVC-LED bottle closure for cleaning a liquid is proposed here, which can be used for glass bottles or steel bottles.

• 1 zeigt einen Flaschenverschluss in einer Ausführungsform.
• 2 zeigt schematisch eine perspektivische Ansicht eines Flaschenverschlusses in einer Ausführungsform mit einem UV-Reiniger und einem Füllstandsensor.
• 3 zeigt schematisch eine Draufsicht eines Flaschenverschlusses mit einer Bedienvorrichtung.
• 4 zeigt schematisch eine Seitenansicht eines Flaschenverschlusses.
• 5 zeigt schematisch eine Glasflasche und eine Stahlflasche mit jeweils einem Flaschenverschluss gemäß einer Ausführungsform.

The present invention will now be explained in more detail below using exemplary embodiments with reference to the accompanying figures, the same reference numerals being used for the same or similar assemblies:

• 1 shows a bottle cap in one embodiment.
• 2 shows schematically a perspective view of a bottle closure in an embodiment with a UV cleaner and a level sensor.
• 3 shows schematically a top view of a bottle closure with an operating device.
• 4th shows schematically a side view of a bottle closure.
• 5 shows schematically a glass bottle and a steel bottle, each with a bottle closure according to an embodiment.

the 1 shows a bottle cap 100 for monitoring drinking behavior and for cleaning a liquid 200 in a bottle 300 . The bottle cap 100 has a lock housing 105 on, the breech housing 105 a fluid facing side 110 having. The side facing the fluid 110 is the bottom of the bottle cap 100 , in the screwed-on state of the bottle cap shown 100 on the bottle 300 .

A control unit is located in the lock housing CU (Control Unit) arranged. The control unit serves as a central control device that controls the electrical components that are arranged in the bottle closure.

There is also a controllable UV cleaner UV in the bottle cap 100 arranged, the UV cleaner UV on the side facing the fluid 110 of the lock housing 105 is arranged and at least one light source 115 has, which is designed as an LED light source. The light source generates UV light to clean the liquid 200 in a UV light wavelength range from 250 to 280 nm. The UV light generated is shown with the three white arrows. The UV light is in the interior of the bottle 300 sent out. Radiation with UV light kills germs in the liquid.

The UV cleaner UV has a temperature sensor T that is set up for temperature monitoring. The arrangement of the temperature sensor T on the UV cleaner UV is only exemplary.

In addition, the bottle cap 100 an optical level meter FS on, the level meter FS on the side facing the fluid 110 is arranged and for determining a liquid level 205 is set up.

The optical level meter FS sends an optical signal to measure the level 205 the end. The level meter also receives FS the reflected emitted optical signal to measure the liquid level. The level meter FS works as a distance sensor and can measure the distance d of the level meter to the liquid level 205 capture. Sending and receiving the optical signal of the level meter FS is with the black arrows in the 1 illustrated.

The control unit CU the UV cleaner is set up for this UV depending on the level meter FS to control certain fluid levels. The control unit is set up to control the electrical components in the bottle cap 100 are arranged to control and communicate with them. This is indicated by the double dotted arrows in the 1 illustrated. The control unit CU assigns a data store M. in which data can be saved, such as measurement data from the level meter FS or geometric bottle profile data, which are used for this, from the detected distance d calculate a volume of liquid. The control unit CU also has a calculation unit C. which can also be understood as a CPU.

This is done, for example, by changing the duration of exposure to UV light, which is emitted by the UV cleaner, as a function of the detected distance d is specified. In addition, the irradiation intensity can also be adjusted by dimming the LED depending on the fill level. Is the liquid level 205 , i.e. the level of the liquid in the bottle is high, irradiation is longer and, additionally or alternatively, more intensive than when the level is low. In this way, needs-based UV cleaning is carried out.

The level meter FS has a level sensor that is in the 1 is not shown.

There is also a diffuser 120 between the level sensor of the level meter FS and the liquid level to be detected 205 arranged. With the diffuser 120 it is possible the liquid level 205 very close to the level meter FS to be able to recognize. In addition, the diffuser improves 205 the detection of the liquid level 205 . The diffuser is formed, for example, from an optically transparent PET plastic material.

The bottle cap 100 also has an accumulator 125 on, i.e. a rechargeable battery that is set up to supply the electrical components of the bottle closure with energy.

In addition, the bottle cap 100 an accelerometer 130 which is set up to detect an acceleration acting on the bottle closure.

With the accelerometer 130 a safety shutdown of the UV cleaner can be triggered if one with the acceleration sensor 130 detected acceleration exceeds an acceleration limit value.

In addition, the bottle cap 100 a position sensor 135 who monitors whether a measured spatial position of the bottle closure 100 below a space limit value for the perpendicular direction 140 is present. In the 1 are the accelerometer 130 and the position sensor 135 formed separately from one another, but these can also be understood as a sensor if a combination sensor is used which is set up to detect both the acceleration and the spatial position.

The bottle cap 100 also has a communication unit 145 on, which is designed, for example, as a low-energy Bluetooth (BLE) interface. External signals are sent via this interface Rx receive or external signals Tx sent. For example, communication can be implemented with a terminal device such as a mobile phone on which a software application is implemented. Data can thus be exchanged with the bottle closure via the communication interface S. For example, in the storage unit M. Stored data are read out in order to track drinking behavior, i.e. to record over time.

The bottle cap 100 also has an operating device 150 on. The operating device 150 is in the bottle cap 100 arranged, and provided for the display and setting of various bottle operating modes. The operating device 150 includes a variety of controllable light sources 155 , wherein the lighting means are arranged on an outside of the bottle closure and are designed as LEDs. With these lamps, the status of the bottle cap is displayed on the top. With these bulbs 155 predetermined signals are implemented for the user.

In addition, the operating device 150 an input means 160 that consists of several capacitive sensor surfaces 165 is formed on an outer surface of the bottle cap 100 are arranged. The input means 160 so is one Input interface with which a user can perform various functions on the bottle cap 100 can trigger.

the 2 Figure 3 shows a perspective view of a bottle cap 100 in one embodiment with a UV cleaner UV and a level sensor FS . In addition, are on the side facing the fluid or the underside of the bottle closure 100 Safety lighting 170 intended. These are designed as blue LEDs, for example, and indicate when the UV cleaner emits UV light to clean the liquid.

In addition, there is a misalignment means 175 provided on the side of the bottle closure facing the fluid 100 is arranged. In the embodiment shown in the 2 is the misalignment means 175 designed as a guide nose in which the UV cleaner UV , the level meter FS and the safety lamp 170 are included. By the shape of the misalignment means 175 will prevent the bottle cap 100 can lie flat on the side facing the fluid. The shape of the misalignment means 175 is for example in the 4th shown in a side view. The tapering shape of the inclined position means that the bottle cap 100 tilts when the closure is placed with the fluid-facing side on a flat surface, such as on a flat surface of a table.

the 3 shows a top view of a bottle cap 100 with an operating device 160 in one embodiment. The operating device 160 has three capacitive sensor surfaces 165 on. With these sensor surfaces, for example, a UVC cleaning process can be triggered, a Bluetooth connection can be established with an end device or a manual level measurement can be triggered.

4th shows schematically a side view of a bottle closure 100 . The bottle cap 100 has a USB interface 180 on, with the one inside the bottle cap 100 arranged rechargeable energy store for supplying energy to the electrical components of the bottle closure 100 can be charged. In addition, provision can be made for data to be read in or out of the bottle closure via the USB interface, such as, for example, stored measurement data from the fill level sensor that are stored in a memory unit. In addition, the 4th the shape of the misalignment means 175 , as before for 2 described.

5 shows a glass bottle and a steel bottle, each with a bottle cap 100 according to a further embodiment.

A first bottle cap 100 is on the glass bottle 310 unscrewed. As can be seen, the level of the bottle is 310 very high and the fluid level 205 reaches close to the level meter in the guide nose 175 is integrated. By using a diffuser between the level meter and the liquid level 205 is arranged, the very high level can be detected with sufficient accuracy, since the light is scattered sufficiently broadly by the diffuser in order to be able to recognize the nearby liquid level.

The basic principle described above and the use of a bottle cap 100 can also be provided for other types of bottle, such as the steel bottle 320 , which are also in the 5 is shown.

In summary, an intelligent bottle cap with UV-C disinfection for drinking bottles is proposed beforehand.

Two primary functions are in the foreground. On the one hand, the recording and tracking of the daily drinking amount and, on the other hand, the effective disinfection of the drinking water using UVC LED technology.

Only the interaction of various sensors enables the current filling level of the bottle to be reliably determined. By calculating the difference, the daily consumption can then be determined.

Furthermore, a very secure system is made possible by the various proposed security measures.

List of reference symbols

100

Bottle cap

105

Lock housing

110

side facing the fluid

115

Light source

120

Diffuser

125

Accumulator or rechargeable energy storage

130

Accelerometer

135

Position sensor

140

Plumb direction

145

Communication unit

150

Control device

155

controllable light source

160

Input means

165

Sensor area

170

Safety lighting

175

Misalignment means

180

USB interface

200

liquid

205

Liquid level

300

bottle

310

glass bottle

320

Steel bottle

CU

Control unit

C.

Calculation unit

d

Distance or level

FS

Level meter

M.

Data storage

T

Temperature sensor

UV

UV cleaner

Rx

received external signal

Tx

sent external signal

Claims (35)

UV cleaner arranged in a bottle cap and set up for cleaning a liquid in a bottle, comprising: - At least one UV light source, wherein the light source is designed as an LED light source and generates UV light in a UV light wavelength range from 250 to 280nm, preferably in a range from 260 to 270nm, in particular with a peak wavelength in one Range of 265nm. UV cleaner after Claim 1 , wherein the UV light source has at least one high-power LED, the high-power LED preferably having a cooling housing. UV cleaner after Claim 1 or 2 also comprising, at least one acceleration sensor for detecting an acceleration which acts on the bottle closure, the light source being switched off when the detected acceleration exceeds an acceleration limit value. UV cleaner according to one of the preceding claims, further comprising, a temperature monitor for monitoring an operating temperature of the light source, wherein at least one temperature sensor is arranged in the area of the light source to monitor the operating temperature. UV cleaner according to one of the preceding claims, wherein irradiation of the liquid with UV light is triggered when a) a predetermined rest timer has expired, the rest timer starting when at least one acceleration sensor for detecting an acceleration acting on the bottle closure is below an acceleration limit value, and / or b) a trigger signal is received via a communication unit, with at least the light source being activated as a function of the received trigger signal, and / or c) a spatial position of the bottle closure measured with a position sensor is below a spatial position limit value. UV cleaner according to one of the preceding claims, wherein the light source generates UV light for a predetermined cleaning time after activation, preferably the cleaning time is in a range from 30 seconds to 300 seconds, in particular the cleaning time is 90 seconds. Level meter arranged in a bottle cap for determining the amount of liquid in a bottle, comprising: - An optical level sensor for detecting a length distance of the sensor to a liquid level; and - A diffuser, the diffuser being arranged between the level sensor and the liquid level to be detected. Level meter according to Claim 7 , wherein the level sensor is designed as a time-of-flight sensor. Level meter according to Claim 7 or 8th also comprising, a calculation unit which is set up to calculate an amount of liquid as a function of the detected length spacing. Level meter according to one of the preceding claims, further comprising A storage unit, which is preferably non-volatile, at least one bottle profile being stored as data on the storage unit and the at least one profile comprising geometric bottle data and / or the storage unit being designed as a ring memory that stores the measurement data of the level sensor for a predetermined storage period . Level meter according to Claim 9 and 10 , wherein the calculation unit is set up to calculate an amount of liquid from the length distance detected by the fill level sensor and the bottle data stored in the memory unit. Level meter according to one of the preceding claims, wherein the diffuser is formed from a UV light-stable plastic material, in particular from PET. Filling level meter according to one of the preceding claims, wherein the detection of the linear distance with the optical filling level sensor is triggered when a) a predetermined rest timer has expired, the rest timer starting when at least one acceleration sensor for detecting an acceleration acting on the bottle closure is below an acceleration limit value, and / or b) a trigger signal is received via a communication unit, the fill level sensor being activated as a function of the received trigger signal, and / or c) a spatial position of the bottle closure measured with a position sensor is below a spatial position limit value. Level meter according to one of the preceding claims, wherein the optical level sensor measures the length of the sensor to the liquid level after activation for a specified measuring period, preferably the measuring period is in a range from 15 seconds to 60 seconds, in particular the measuring period is 30 seconds. The level meter according to one of the preceding claims also comprising a position sensor for detecting an angular difference between the position sensor and the vertical direction, the detection of the longitudinal distance from the liquid level being triggered when a detected angular difference with the vertical direction is below a critical angle, preferably the critical angle is below 10 ° , especially in a range of about 7.5 °. The level meter according to one of the preceding claims also comprising a control unit which is set up to process the determined amount of liquid as measurement data, and in particular to transmit it to a display device, to a terminal and / or to a memory unit. Operating device arranged in a bottle closure for displaying different bottle operating modes, at least comprising: a plurality of controllable lighting means, the lighting means being arranged on an outside of the bottle closure, preferably - at least four controllable white LEDs, and - At least one controllable RGB LED; and a control unit, the control unit being set up for this purpose a) to set a level mode in which a current amount of liquid determined with a level meter is displayed by activating the lighting means by assigning different predetermined amounts of liquid to different lighting means, preferably in the level mode, the white LEDs are controlled to display the determined amount of liquid, and /or b) to set a reminder mode in which a drinking reminder is generated by activating the lighting means if a liquid withdrawal detected with a level meter is below a liquid withdrawal specification within a specified drinking time, with the RGB-LED being controlled preferably in the reminder mode and / or c) to set a UV mode in which a remaining period of time of a UV cleaning process is displayed by controlling the lighting means by assigning different predetermined times to different lighting means. Control device according to Claim 17 , wherein the controllable lighting means switch off after activation and after a stored energy-saving timer has expired, the energy-saving timer preferably being stored in a control unit which is set up to control the lighting means. Control device according to Claim 17 or 18th , with the white LEDs positioned between a display diffuser and the RBG LED. Operating device according to one of the preceding claims further comprising an input means, wherein the input means is arranged on an outer surface of the bottle closure and is preferably formed from at least one capacitive sensor surface, in particular from three capacitive sensor surfaces, and wherein the input means is set up to trigger a disinfection process with a UV cleaner and / or to trigger a level measurement with a level meter. Bottle closure for monitoring drinking behavior and for cleaning a liquid in a bottle, comprising: a closure housing, the closure housing having a side facing the fluid; - A control unit arranged in the lock housing; - a controllable UV cleaner, the UV cleaner being arranged on the side of the closure housing facing the fluid and having at least one light source, in particular an LED light source, the light source generating UV light for cleaning a liquid in a UV light wavelength range; and an optical level meter, the level meter being arranged on the side facing the fluid and being set up to determine a liquid level, characterized in that the control unit controls the UV cleaner as a function of the liquid level determined by the level meter. Bottle cap after Claim 21 , wherein the control unit is set up to activate the light source when a flat surface plane of the liquid level is detected with the level meter. Bottle cap after Claim 21 or 22nd , wherein the control unit is set up to control the UV cleaner so that the light source generates an emitted amount of light depending on the detected liquid level, preferably controls so that the amount of light generated is generated proportionally to the determined liquid level. Bottle closure according to one of the preceding claims, further comprising a rechargeable energy store for supplying energy to the electrical components of the bottle closure. Bottle closure according to one of the preceding claims, further comprising, a non-volatile memory unit for storing sensor data, wherein on the memory unit at least one bottle profile is stored as data and the at least one profile includes geometric bottle data and / or the storage unit is designed as a ring memory, which stores measurement data of the fill level sensor for a predetermined period of time so that it can be called up. Bottle closure according to one of the preceding claims, further comprising at least one acceleration sensor for detecting an acceleration which acts on the bottle closure. The bottle closure according to one of the preceding claims also comprising a position sensor for detecting an angle difference between the position sensor and the perpendicular direction, the detection of the length distance from the liquid level being triggered when a detected angle difference with the perpendicular direction is below a predetermined limit angle, preferably the limit angle is below 10 °, in particular in a range of about 7.5 °. Bottle closure according to one of the preceding claims also comprising a communication unit, wherein the communication unit is set up for data exchange with a terminal, the communication unit preferably being designed as a Bluetooth interface, in particular as a low-energy Bluetooth interface. Bottle closure according to one of the preceding claims, further comprising, two colored status LEDs for displaying a current disinfection status, wherein the control unit is set up to to set a disinfection mode in which a current operating state of the UV cleaner is displayed by activating the two status LEDs, a first operating state being assigned to the first status LED and a second operating state being assigned to the second status LED. Bottle closure according to one of the preceding claims further comprising an operating device designed according to one of the Claims 17 until 20th . Bottle closure according to one of the preceding claims, wherein the UV cleaner is designed according to one of the Claims 1 until 6th and / or the level meter is designed according to one of the Claims 7 until 16 . Bottle closure according to one of the preceding claims, wherein the electrical components of the bottle closure are arranged separately on a sensor board, a control board and an operating board, wherein at least the UV cleaner and the level meter are arranged on the sensor board, at least the control unit, the communication unit and the memory unit are arranged on the control board, and at least the control device is arranged on the control board. Bottle closure according to one of the preceding claims, wherein the electrical components of the bottle closure are arranged in the closure housing in a watertight manner. Bottle closure according to one of the preceding claims, wherein the bottle closure has a tilting means on the side facing the fluid in order to prevent the side facing the fluid from resting flat on a surface. Bottle with a bottle closure formed according to one of the preceding claims, wherein the bottle is preferably formed from glass.

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