Abstract: A pool related platform that includes a housing; and a fluid jet system that includes a first fluid jet portion that is configured to selectively output a first fluid jet from a first outlet located at rear part of the pool related platform at a first angle thereby lifting a front part of the housing; a second fluid jet portion that is configured to selectively output a second fluid jet from a second outlet located at the rear part of the pool related platform at a second angle thereby lifting a rear part of the housing; and a selection unit that is configured to receive an inner flow of fluid and to direct the inner flow to one of the first fluid jet portion or the second fluid jet portion.

Abstract: A system for navigating a dynamic pool equipment unit is disclosed. The system comprises a wireless unit physically connected to the dynamic pool equipment unit deployed in a water pool, allowing the wireless unit to move with the equipment while partially out of the water. The wireless unit includes a first interface for communicating with the equipment unit via a first communication channel, and a second interface for intercepting wireless signals from external stations via a wireless communication channel. A controller navigates the equipment unit towards the external station(s) by measuring the received signal strength indicator (RSSI) of intercepted wireless signals, estimating the direction of the external station(s) based on RSSI analysis, and transmitting movement instructions to the equipment unit to advance in the estimated direction.

Abstract: An interfacing system for pool related platform (PRP) autonomous exit from a pool assistance, the interfacing system includes a pool surface interface that is positioned on an external surface; and a submerged interface that is mechanically coupled to the pool surface interface and is configured to interface with the PRP and convert a PRP rotation of a PRP interfacing element to a movement of a portion of the submerged interface from a lower position in which the portion of the submerged interface is inclined at a first angle to an upper position in which the portion of the submerged interface is inclined as a second angle that is smaller than the first angle.

Abstract: There is provided a method for estimating a status of a fluid filter of a cleaning device, the method includes performing, at one or more measurement iterations, one or more first fluid pressure measurements of fluid within the cleaning device while the cleaning device actively moves fluid within the cleaning device; performing, at the one or more measurement iterations, one or more second fluid pressure measurements of fluid within the cleaning device while the cleaning device does not actively move fluid within the cleaning device; predicting a future status of the fluid filter, based on the one or more first fluid pressure measurements and the one or more second fluid pressure measurements; and responding to the predicting.

Abstract: A method of navigating a dynamic pool equipment unit in a water pool, comprising: receiving sensory data captured by a plurality of sensors of a dynamic pool equipment unit moving in a water pool, mapping, based on analysis of the sensory data, one or more geometrically distinguishable surfaces of the water pool which is geometrically distinguishable from any adjacent surface of the water pool, generating a map of the water pool based on the mapped one or more geometrically distinguishable surface, and outputting the water pool map for navigating one or more dynamic pool. Wherein the plurality of sensors employ a plurality of different sensing technologies.

Abstract: A detachable filtering unit that includes (a) a filter bag; (b) at least one interior supporting element (ISE) that is configured to contact one or more interior regions of the filter bag and to support the filter bag; and (c) a filtering unit base that comprises an ISE interface, a fluid opening; wherein the at least one ISE is configured to be detachable coupled to the ISE interface

Abstract: Disclosed herein is a method of detecting stalled state of a dynamic pool equipment unit, comprising receiving a plurality of movement features relating to a dynamic pool equipment unit deployed in a water pool which are captured during a predefined sampling window and comprise (1) motion features of the pool equipment unit, and (2) operational features of electric motor(s) of the pool equipment unit, determining a movement pattern of the pool equipment unit using one or more statistical models applied to the plurality of movement features which are trained to estimate a stalled state of the pool equipment unit in which the pool equipment unit is pitched up and unable to advance on a slopped obstacle in the water pool, and causing the pool equipment unit to stop attempted advance in a current direction responsive to determining that the pool equipment unit is in the stalled state.

Abstract: A pool related platform that includes a body, a detachable sensor unit (DSU) that comprises multiple sensors and is detachably coupled to the body; and at least one power supply element.

Abstract: A pool cleaning robot having cleaning capabilities. The pool cleaning robot includes a housing that comprises a housing bottom, the housing bottom comprises a main fluid inlet in fluid communication with a filtering unit of the pool cleaning robot, and a housing bottom fluid jet outlet; a bottom fluid jet unit that comprises a fluid pump that is located within the housing, and a fluid conduit that fluidly couples the fluid pump with the bottom fluid jet outlet; and a controller the controls an output of a bottom fluid jet from the bottom jet outlet.

Abstract: Disclosed herein is a method of detecting stalled state of a dynamic pool equipment unit, comprising receiving a plurality of movement features relating to a dynamic pool equipment unit deployed in a water pool which are captured during a predefined sampling window and comprise (1) motion features of the pool equipment unit, and (2) operational features of electric motor(s) of the pool equipment unit, determining a movement pattern of the pool equipment unit using one or more statistical models applied to the plurality of movement features which are trained to estimate a stalled state of the pool equipment unit in which the pool equipment unit is pitched up and unable to advance on a slopped obstacle in the water pool, and causing the pool equipment unit to stop attempted advance in a current direction responsive to determining that the pool equipment unit is in the stalled state.

Abstract: A method for charging a pool related platform (PRP), the method may include (i) positioning a first wireless charging element (WCE) of the PRP within a charging range of a second WCE of a charging unit that is movable and is located at a temporary PRP location that is outside an interior of a pool structural element; wherein the positioning comprises moving the first WCE towards the PRP location; and (ii) wirelessly charging, by the second WCE, the first WCE while maintaining the first WCE within the charging range of the second WCE.

Abstract: A detachable pool related platform that includes a housing, a sensing unit that comprises a location unit that is configured to locate a submerged robot that is submerged in a pool, a communication unit that is configured to communicate with the submerged robot, and a detachable interface that is configured to detachably mount the detachable system onto a surface of the pool.

Abstract: A pool cleaning robot that includes a ballast tank for controlling a buoyancy of the submarine pool cleaner; at least one cleaning element for cleaning debris from an underwater surface of a pool while the pool cleaning robot hovers over the underwater surface; a propulsion module that is configured to propel the submersible pool cleaner, and a steering module that comprises a rudder and diving planes.

Abstract: A method of evaluating slipperiness of a floor surface of a water pool by inducing one or more rotation scans of a pool equipment unit by driving a power pulse to one or more electric motors configured to rotate the pool equipment unit deployed on a floor surface of a water pool and at least partially submerged in water of the water pool, accumulating power values of the power pulse while its level is above a motor operation threshold, accumulating values of angular velocity of the pool equipment unit measured starting after the power pulse drops below the threshold until the pool equipment unit stops rotating; computing work energy invested to rotate the pool equipment unit based on the power values and the angular velocity values; computing a slipperiness index of the floor surface based on the work energy; and initiating one or more actions according to the slipperiness index.

Abstract: A method of estimating a level of one or more water parameters using trained machine learning (ML) based regression trees, comprising receiving physical features and spectral features relating to one or more sample of waters, propagating the water sample(s) through a regression trees comprising a plurality of nodes arranged in a plurality of branches propagating from a root node to a plurality of leaf nodes, each of the plurality of nodes is associated with an ML model trained to estimate a level of one or more water parameters in water samples, identifying a certain leaf node to which the water sample(s) propagated based on the plurality of physical features, estimating a level of one or more of the water parameters in the water sample(s) by applying the ML model associated with the certain leaf node to the spectral features, and initiating action(s) based on the water parameter(s) estimated level.

Abstract: A pool cleaning robot that may include a housing; a power supply cable interface for interfacing with a power supply cable; wherein at least a part of the power supply cable is external to the housing; a power supply control unit, and a wireless charging interface.

Abstract: A method for determining a temperature of a fluid of a pool, the method may include: measuring at least one pool cleaning robot (PCR) parameter in relation to a period of time and by one or more PCR sensors located within an interior of the PCR; calculating at least one period of time PCR parameter; determining at least one value of at least one PCR parameter weight based on at least one value of the at least one period of time PCR parameter; and determining the temperature of the fluid of the pool based on the at least one period of time PCR parameter and the at least one PCR parameter weight.

Abstract: A method of evaluating slipperiness of a floor surface of a water pool by inducing one or more rotation scans of a pool equipment unit by driving a power pulse to one or more electric motors configured to rotate the pool equipment unit deployed on a floor surface of a water pool and at least partially submerged in water of the water pool, accumulating power values of the power pulse while its level is above a motor operation threshold, accumulating values of angular velocity of the pool equipment unit measured starting after the power pulse drops below the threshold until the pool equipment unit stops rotating; computing work energy invested to rotate the pool equipment unit based on the power values and the angular velocity values; computing a slipperiness index of the floor surface based on the work energy; and initiating one or more actions according to the slipperiness index.