A device for measuring hair properties has a first part (I) and a second part (II) between which hair (H) is guided. The first part (I) comprises a measuring probe (MP), and the second part (II) is arranged for deforming the hair (H) against the measuring probe (MP). While the device moves along the hair (H), the measuring probe (MP) experiences both a friction force resulting from the hair (H) being guided along the measuring probe (MP), and a deformation force (DF) resulting from the hair (H) being deformed by the second part (II) against the measuring probe (MP). Advantageously, the second part (II) comprises a pressure element (PB, S) for pressing the hair (H) against the measuring probe (MP), to squeeze the hair (H). In alternative embodiments, the second part (II) comprises alignment elements (AE) at opposite sides of the measuring probe (MP) for bending the hair (H) against the measuring probe (MP), and guidance elements (G) for mitigating an influence of an angle at which the device is applied to the hair (H) to the friction force and/or the deformation force, while the measuring probe (MP) is mounted to a load cell module (LC-X, LC-Y) for measuring a load in two dimensions to measure friction force and deformation force, respectively.

A device for providing an indication of brushing activity of a toothbrush is disclosed. The device comprises an accelerometer 18 configured to produce acceleration data from motion of the toothbrush 2, means 13 for filtering the acceleration data to produce gravitational components, and for filtering the acceleration data to produce linear acceleration components. The device further comprises means 15 for projecting the gravitational components and the linear acceleration components into an n-dimensional space, where and for performing a clustering process on the projections of gravitational components and linear acceleration components into n-dimensional space to produce clustering results. The clustering results comprise a plurality of clusters 52-54 each of which represents a brushing area. A brushing area can be determined based on an assignment of subsequent gravitational components and linear acceleration components of acceleration data to a particular cluster, and feedback provided to a user based on the determination of brushing area, thereby providing an indication of brushing activity.

A hair condition-determining device can have a device body having at least one first region and one second region, wherein the first region and the second region are designed in such a way that the hair of the user can be moved between the first region and the second region, at least one optional light source arranged in or on the device body for illuminating the hair of the user, at least one optical sensor arranged in or on the device body for sensing light that has been emitted by the light source and has interacted with the hair and/or ambient light that has interacted with the hair, and an electronic circuit device arranged in or on the device body, wherein the electronic circuit device is coupled to the optical sensor in order to receive the detected light.

A system and method for operating a household cleaning appliance, including: providing a household cleaning appliance including, a powered and electronically controlled cleaning implement, and at least one physical sensor taken from a group consisting of: an orientation sensor, an acceleration sensor, an inertial sensor, a global positioning sensor, a pressure sensor, a load sensor, audio sensor, humidity sensor, and a temperature sensor; providing a camera associated with the household cleaning appliance; deriving an augmented classification using one or more classifiers classifying the physical sensor data and the image data; and modifying operation of the cleaning implement based upon the augmented classification.

A system and method for operating a personal grooming/household appliance, including: providing a personal grooming/household appliance including at least one physical sensor taken from a group consisting of: an orientation sensor, an acceleration sensor, an inertial sensor, a global positioning sensor, a pressure sensor, and a load sensor, audio sensor, humidity sensor, and a temperature sensor; providing a camera associated with the personal grooming/household appliance; classifying data received from the physical sensor and from the camera using at least one trained machine learning classifier to generate an augmented classification; and providing user feedback information based upon the augmented classification or modifying operation of the grooming/household appliance based upon the augmented classification.

A system and method for operating a personal grooming/household appliance, including: providing a personal grooming appliance including at least one motion sensor taken from a group consisting of: an orientation sensor, an acceleration sensor, and an inertial sensor; providing a camera associated with the personal grooming appliance; classifying data received from the motion sensor and from the camera using at least one trained machine learning classifier to generate an augmented classification; and providing user feedback information based upon the augmented classification, wherein the augmented classification pertains to a combination of a first state pertaining to a position of the grooming appliance with respect to a user's body part and also pertains to a second state that is different than the first state.

A system and method for treating a surface of a user's body part, including: obtaining target surface condition information from a user's body part surface using one or more condition sensors taken from a group consisting of: an optical sensor and a bio-sensor; classifying the target surface condition information using a machine learning classifier to determine an initial target surface condition classification; obtaining treatment progress information using a combination of motion sensor data and surface condition information from the one or more condition sensors; and classifying the treatment progress information using a machine learning classifier to determine a progress classification for treating the initial target surface condition classification.

The brush head of the toothbrush has filaments that are pointed at one end and led through clearances in the bristle carrier. These filaments have a length of about 10-20 mm. The tips of the pointed filaments produce a height profile other than that of a plane and the ends of the pointed filaments that are remote from the tips are melted.

Oral hygiene monitoring system is disclosed to track motion and orientation of an oral hygiene device. The control system may process data output from a motion sensor to determine position and orientation of an oral hygiene device with respect to a user's mouth. In some examples, the system may use machine learning techniques to identify position and orientation, brush stroke type, and other specific actions.

An oral care device such as an oral care implement or a toothbrush. The oral care device may include a handle and a head. The head may have a plurality of cleaning elements extending therefrom. The head may comprise a channel and a plurality of electrodes may be located within the channel. The electrodes may be coupled to a power source. The electrodes may be used to generate a chemical agent via the application of an electrical potential across the electrodes when in communication with an electrolyte. The chemical agents may include ozone, hydrogen peroxide, peroxide, chlorine hypochlorite, ions, peroxides, and/or other chemical agents.