Wireless communication with at least partly submerged pool cleaning platform through intermediary low frequency radio repeater

Abstract

System and methods that enable wireless communication with an at least partly submerged cleaning platform such as an automated pool cleaning robot submerged underwater. The system includes a at least one communication bridge creates a wireless link to wireless communication devices and translates signals to properly penetrate water. The at least one communication bridge first transceiver receives conventional high radio frequencies from diverse wireless communication devices via Wi-Fi, Bluetooth, or other protocols. These signals connect to a frequency converter that shifts to optimized underwater megahertz frequencies less than 1 GHz. A second at least one communication bridge transceiver emits the low frequency signals which pass several meters through water. An at least partly submerged cleaning platform integrated with third transceiver wirelessly sends and receives the translated low frequency signals penetrating down from the surface at least one communication bridge.

Description

[0001] WIRELESS COMMUNICATION WITH AT LEAST PARTLY SUBMERGED POOL CLEANING PLATFORM THROUGH INTERMEDIARY LOW FREQUENCY RADIO REPEATER

[0002] RELATED APPLICATION / S

[0003] This application claims the benefit of priority of U.S. Provisional Patent Application No. 63 / 627,837, filed on February 1, 2024, the contents of which are incorporated herein by reference in their entirety.

[0004] FIELD AND BACKGROUND OF THE INVENTION

[0005] The present invention, in some embodiments thereof, relates to a communication device and, more particularly, but not exclusively, to a bridge facilitating communication with a submerged platform or partly submerged platform, such as an automatic pool cleaner.

[0006] Robotic automatic pool cleaners provide convenience in maintaining residential and commercial pools. Most operate submerged, vacuuming and scrubbing pool surfaces along programmed paths. As these cleaners become more advanced, cordless, incorporating sensors and connectivity, there is desire for real-time communication and control rather than simple preprogrammed machines.

[0007] SUMMARY OF THE INVENTION

[0008] According to some embodiments of the present invention, there is provided a system for enabling communication with an at least partly submerged cleaning platform. The system comprises at least one communication bridge configured to receive and transmit wireless communication signals, wherein the at least one communication bridge comprises: a first transceiver configured for receiving and transmitting wireless signals at a first frequency via a wireless communication protocol from wireless communication devices, a frequency converter configured for converting the wireless signals from the first frequency to a second low radio frequency less than 1 GHz, and a second transceiver configured for receiving and transmitting the converted wireless signals at the second low radio frequency. The second low radio frequency is configured for enabling the signals to penetrate through water in a pool to an underwater unlimited depth for example of a few cm to 3 meter or more. The system further includes an at least partly submerged cleaning platform configured to operate at the pool in unlimited depths including bottom of the pool, water surfaces, walls, stairs., wherein the platform comprises a third transceiver configured for receiving and transmitting wireless signals at the second low radio frequency to communicate with the at least one communication bridge while submerged in the pool.

[0009] Optionally, the first frequency comprises a wireless frequency in a range of 2.4 GHz to 5 GHz and the second low radio frequency is in a range of 30 MHz to 500 MHz.

[0010] Optionally, the at least one communication bridge comprises a plurality of nodes configured for communicating with one another in a mesh network topology.

[0011] Optionally, the at least one communication bridge comprises a hybrid configuration including a first bridge node configured for fixed installation on a surface proximate to the pool and a second bridge node configured for floating installation on a surface of the pool water, wherein the first and second bridge nodes are configured to operate cooperatively.

[0012] Optionally, the hybrid configuration comprises a signal quality monitoring system configured for measuring signal strength parameters and an automated handoff mechanism configured for transitioning communication between the first and second bridge nodes based on the measured signal strength parameters.

[0013] Optionally, the second transceiver comprises a directional antenna configured for focusing wireless signal transmission specifically within a target pool area.

[0014] Optionally, the at least one communication bridge is configured for wired or wireless communication with a home router via an Ethernet, Wi-Fi, Bluetooth, or powerline connection.

[0015] Optionally, the at least one communication bridge comprises a cellular transceiver configured for connecting to the internet.

[0016] Optionally, the at least one communication bridge further comprises a controller configured to manage two-way data communication between the first transceiver, frequency converter, and second transceiver.

[0017] According to some embodiments of the present invention, there is provided a method for enabling communication with an at least partly submerged cleaning platform. The method comprises providing at least one communication bridge located exterior to a pool, receiving and transmitting wireless signals at a first frequency from wireless communication devices, converting the wireless signals from the first frequency to a second low radio frequency less than 1 GHz, transmitting the converted wireless signals at the second low radio frequency through water in the pool to an underwater depths of between 0 and 3 meters for example, including bottom of the pool, water surfaces, walls, stairs . u, receiving the converted wireless signals at the platform, and transmitting response signals at the second low radio frequency to the at least one communication bridge. Optionally, the method includes monitoring signal quality metrics between multiple communication bridge nodes, determining an optimal signal path based on the monitored signal quality metrics, and routing communication signals through the optimal signal path.

[0018] Optionally, the method includes detecting a signal degradation condition and automatically switching to a different frequency band selected from multiple Industrial, Scientific and Medical (ISM) frequency bands based on the detected signal degradation condition.

[0019] According to some embodiments of the present invention, the second transceiver is configured to dynamically adjust its transmission signal strength based on the detected or known depth of the at least partly submerged cleaning platform. The depth information may be obtained through one or more depth sensors integrated into the cleaning platform, through pre-mapped pool depth data, or through real-time depth mapping systems. The system is configured to maintain reliable communication through water depths ranging for example from 0 to 3 meters, with the transmission signal strength being automatically modulated to provide optimal signal penetration at the current operating depth while minimizing power consumption.

[0020] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention pertains. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of embodiments of the invention, exemplary methods and / or materials are described below. In case of conflict, the patent specification, including definitions, will control. In addition, the materials, methods, and examples are illustrative only and are not intended to be necessarily limiting.

[0021] Implementation of the method and / or system of embodiments of the invention can involve performing or completing selected tasks manually, automatically, or a combination thereof. Moreover, according to actual instrumentation and equipment of embodiments of the method and / or system of the invention, several selected tasks could be implemented by hardware, by software or by firmware or by a combination thereof using an operating system.

[0022] For example, hardware for performing selected tasks according to embodiments of the invention could be implemented as a chip or a circuit. As software, selected tasks according to embodiments of the invention could be implemented as a plurality of software instructions being executed by a computer using any suitable operating system. In an exemplary embodiment of the invention, one or more tasks according to exemplary embodiments of method and / or system as described herein are performed by a data processor, such as a computing platform for executing a plurality of instructions. Optionally, the data processor includes a volatile memory for storing instructions and / or data and / or a non-volatile storage, for example, a magnetic hard-disk and / or removable media, for storing instructions and / or data. Optionally, a network connection is provided as well. A display and / or a user input device such as a keyboard or mouse are optionally provided as well.

[0023] BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

[0024] Some embodiments of the invention are herein described, by way of example only, with reference to the accompanying drawings. With specific reference now to the drawings in detail, it is stressed that the particulars shown are by way of example and for purposes of illustrative discussion of embodiments of the invention. In this regard, the description taken with the drawings makes apparent to those skilled in the art how embodiments of the invention may be practiced.

[0025] In the drawings:

[0026] FIG. 1 which is a schematic illustration of a system (1) for enabling communication with an at least partly submerged cleaning platform, according to some embodiments of the present invention; and

[0027] FIG. 2 shows a flowchart of the communication method with a submerged pool cleaning platform such as a pool cleaning robot.

[0028] DESCRIPTION OF SPECIFIC EMBODIMENTS OF THE INVENTION

[0029] The present invention, in some embodiments thereof, relates to a communication device and, more particularly, but not exclusively, to a bridge facilitating communication with a submerged platform, such as an automatic pool cleaner.

[0030] The disclosure relates to systems and methods for enabling wireless communication with at least partly submerged cleaning platform such as robotic pool cleaning devices submerged in pool water, where radio frequency (RF) signals experience severe attenuation under water at typical Wi-Fi / Bluetooth frequencies. Radio repeater techniques allow remote monitoring and control at large depths underwater.

[0031] At least partly submerged cleaning platforms, such as robotic automatic pool cleaners, become more advanced, cordless incorporating sensors and connectivity, there is desire for realtime communication and control rather than simple pre-programmed machines. As used herein cordless means not connected to a power supply with cable, for example battery actuated.

[0032] However, conventional wireless protocols used for automation and loT devices (e.g., WiFi, Bluetooth, ZigBee based devices) rely on 2.4 GHz or 5 GHz frequencies that, decay exponentially in water due to absorption. While these frequencies enable high bandwidth communication in air, signals attenuate over just a few centimeters submerged. Therefore, existing wireless mechanisms are unsuitable for depths required by pool cleaners.

[0033] A radio repeater system is therefore needed to achieve reliable underwater control links for automation capability. Frequency conversion techniques allow' translation between conventional protocols used locally above pool and new' long-range underwater protocol.

[0034] The embodiments of the invention disclosed here enable reliable wireless communication with at least partly submerged cleaning platforms. A radio repeater Communication Bridge translates between conventional wireless signals used by external wireless communication devices and lower- frequency RF waves which can penetrate deep through pool water.

[0035] The embodiments of the invention have the benefit of allowing remote monitoring and control of automated pool cleaners operating at depths. Existing home wireless devices like phones and computers connected using Wi-Fi or Bluetooth can relay commands, program cleaning schedules, request sensor updates, and receive self-diagnostic alerts transmitted from the at least partly submerged cleaning platform.

[0036] The embodiments of the invention are based on a Communication Bridge apparatus that comprises radio transceiver components to bridge between Wireless communication devices above water and at least partly submerged cleaning platform such as a submerged robot cleaner below. A first transceiver connects wirelessly with Wireless communication devices by protocols including 802.11 Wi-Fi or Bluetooth standards using antennae tuned for 2.4 GHz / 5 GHz spectrum ranges. Digital command data is passed internally to a frequency converter subsystem which shifts the high-frequency signals to lower MHz frequencies selected for better water penetration properties. These 30-500 MHz signals are emitted directed into the pool water by a second transceiver antenna component. As used herein, a communication bridge or at least one communication bridge may be a single communication bridge or one or more communication bridges which may be connected to one another, for instance as nodes of a mesh network.

[0037] At the receiving end, the at least partly submerged cleaning platform, for instance the pool cleaning robot, operates at depths up to about 2 meters or in certain cases even up to 5 meters programmed to vacuum debris, scrub surfaces, and filter impurities. A hydrodynamic low MHz frequency antenna picks up signals from the Communication Bridge which are decoded by a third transceiver chipset within the robot system main electronics. Underwater transmission also occurs in reverse sequence allowing the platform health data and cleaning activity logs to be reliably delivered to Wireless communication device dashboards above water, closing the two-way remote control communication link through an innovative radio repeater technique in the radio-blocking pool medium. The communication bridge may optimize signal transmission by utilizing multiple Industrial, Scientific and Medical (ISM) frequency bands. While higher ISM bands like 915 MHz provide good bandwidth, lower ISM frequencies at 13.553 MHz and 26.957 MHz offer superior water penetration characteristics. The system can dynamically switch between these frequencies based on operating conditions and required data rates. For instance, status updates may use lower frequencies for reliability, while video streaming could leverage higher bands when the robot is near the surface.

[0038] The antenna system may employ directional technology to focus signal strength specifically within the pool area. A high-gain directional antenna array on the bridge concentrates RF energy toward the pool's operational zone while minimizing interference with nearby areas. The antenna's radiation pattern can be electronically steered to track robot movement and maintain optimal signal strength. This focused transmission approach improves communication reliability while reducing power requirements and potential interference with other wireless devices.

[0039] Multiple communication bridges may form a coordinated mesh network around larger pools or complex pool layouts. Each bridge node shares connection quality metrics and cooperatively routes traffic through the strongest available paths. If one bridge experiences interference or degraded performance, the mesh automatically reroutes through alternate nodes. This distributed architecture provides redundancy and extends reliable coverage to all pool areas, even around obstacles or in irregular pool shapes that might otherwise create signal shadows.

[0040] Before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not necessarily limited in its application to the details of construction and the arrangement of the components and / or methods set forth in the following description and / or illustrated in the drawings and / or the Examples. The invention is capable of other embodiments or of being practiced or carried out in various ways.

[0041] Reference is now made to FIG. 1 which is a schematic illustration of a system (1) for enabling communication with an at least partly submerged cleaning platform, according to some embodiments of the present invention. As used herein a at least partly submerged cleaning platform may be and / or be referred to herein as an underwater pool cleaning robot. The system includes a communication bridge (10) that comprises a first transceiver (11) and a second transceiver (13) and a frequency converter (12) electronically bridging therebetween. The communication bridge (10) optionally includes a rigid housing that contains all these elements. The first transceiver (11) may enable wireless communication at frequencies above 1 GHz. For example, the first transceiver (11) may operate at 2.4 GHz or 5 GHz to provide Wi-Fi connectivity per IEEE 802.11 b / g / n / ac standards (reference common wireless standards). The second transceiver (13) transmits the sub-1 GHz signal output from the frequency converter (12). For example, the second transceiver (13) may operate at 900 MHz based on the output from the frequency converter (12) to achieve reliable communication through the variety depth of a swimming pool. to. For example, the second transceiver (13) may be an on Semiconductor LYT '860 916 MHz Transceiver and / or hope Microelectronics RFM22B 900 MHz ISM Band Transceiver. The first transceiver (11) receives and transmits wireless signals at a first frequency greater than 1 GHz via common wireless communication protocols such as Wi-Fi or Bluetooth. For example, the first transceiver (11) may be or include a Wi-Fi Transceiver Module (e.g., Espresso ESP8266 2.4 GHz Wi-Fi transceiver) and / or a Bluetooth Transceiver Module (e.g., Microchip RN4870 Bluetooth 4.2 Transceiver). The first transceiver (11) interfaces with devices (21) with wireless communication such as user devices for example smartphones, tablets, or computers, remote control to enable user control and monitoring. The system further includes a frequency converter (12). The communication bridge (10) maybe mounted on a wall, floating on pool water using a floating device such as a buoy, or connected to a docking station of a pool cleaning robot, or control station (20), for instance the pool cleaning robot (20) described below.

[0042] The second transceiver (13) optionally implements dynamic signal strength adjustment capabilities based on the operating depth of the cleaning platform (20). This depth-aware transmission system operates within for example a range of 0 to 3 meters depth, which encompasses the typical operating depths of residential and commercial swimming pools. The system obtains depth information through multiple possible sources:

[0043] 1. Integrated depth sensors in the cleaning platform (20) that provide real-time depth measurements

[0044] 2. Pre-mapped pool depth data stored in the system's memory

[0045] 3. Real-time depth mapping systems that continuously monitor the platform's position and depth

[0046] 4. Pressure sensors that calculate depth based on water pressure measurements

[0047] The second transceiver (13) may use this depth information to automatically modulate its transmission signal strength. For operation near the water surface (0-1 meter depth), the system may utilize lower signal strength to conserve power while maintaining reliable communication. As the cleaning platform (20) operates at greater depths (1-3 meters), the system progressively increases signal strength to compensate for increased water-based signal attenuation. This adaptive system ensures consistent communication quality throughout the entire operating depth range while optimizing power efficiency. The wireless signals may encode one or more of the following messages and / or responses thereto: call for Homing, manual movement control (e.g. received from a remote controller, for example Joystick instructions), start / Stop cleaning commands, request for information (e.g. request for location, request for filter full level status, request for remaining time for task completion information, request for battery charge state, and / or request for change operation mode.

[0048] I'll help add the missing definitions in patent style. These should be added in the early part of the detailed description, after existing definitions but before the technical embodiments:

[0049] As used herein, the term "cordless" means not connected to a power supply with cable, for example battery actuated platform.

[0050] As used herein, the term "communication bridge" means one or more communication bridges which may be connected to one another, for instance as nodes of a mesh network.

[0051] As used herein, the term "underwater depth" means a depth measured from the water surface to a pool bottom surface.

[0052] As used herein, the term "at least partly submerged cleaning platform" means any cleaning device configured to operate with at least a portion of its body below the water surface, including but not limited to pool cleaning robots, automated scrubbers, and water maintenance devices.

[0053] As used herein, the term "mesh network" means a network topology where nodes are configured to cooperatively route traffic through available paths between multiple communication bridges.

[0054] As used herein, the term "signal quality metrics" means measurable parameters of wireless communication including but not limited to signal strength, bit error rate, packet loss rate, and latency.

[0055] As used herein, the term "Industrial, Scientific and Medical (ISM) bands" means radio frequency bands reserved internationally for industrial, scientific and medical purposes other than telecommunications, including but not limited to frequencies at 13.553MHz, 26.957MHz, and 915MHz.

[0056] As used herein, the term "directional antenna" means an antenna configured to focus sensitivity gain primarily to a target area, such as a pool area, rather than radiating signals with equal power in all directions.

[0057] As used herein, the term "hybrid configuration" means an installation combining at least one fixed bridge installation with at least one floating bridge installation operating cooperatively within the same system.

[0058] As used herein, the term "frequency converter" means a device or component configured to transform wireless signals from one frequency to another frequency.

[0059] As used herein, the term "transceiver" means a device capable of both transmitting and receiving wireless signals at specified frequencies.

[0060] As used herein, the term "signal strength parameters" means measurable characteristics of wireless signals including but not limited to received signal strength indicator (RSSI), signal-to- noise ratio (SNR), and signal quality indicator (SQI).

[0061] As used herein, the term "operating depth" means the current vertical distance between the water surface and the position of the cleaning platform during operation.

[0062] As used herein, the term "water conditions" means physical and chemical properties of the pool water that may affect signal propagation, including but not limited to temperature, mineral content, pH levels, turbidity, and conductivity.

[0063] The first transceiver (11) in the communication bridge (10) facilitates wireless connectivity with devices (21) with wireless communication such as smartphones, tablets, or computers for remote monitoring and control of the pool cleaning robot (20). Direct communication between wireless communication devices and the bridge ( 10) is optionally enabled by integrating compatible wireless technology into the first transceiver (11). Bluetooth and Wi-Fi protocols provide standardized wireless communication capabilities that are nearly universally present in modern wireless communication devices such as 21. Optionally, Bluetooth Low Energy (BLE), introduced in Bluetooth 4.0, operates in the 2.4 GHz ISM band. BLE specifies a short-range wireless communication link optimized for low-' power consumption. Inclusion of BLE in the first transceiver (11) would enable direct communication with any wireless communication device with Bluetooth functionality without additional hardware. As used herein, Wi-Fi refers to wireless local area network technology based on the IEEE 802.11 standards. For example, the 802.11b / g / n standards operate on 2.4 GHz frequencies, while 802.1 lac utilizes 5 GHz. Integrating 802.1 1 chipsets into the first transceiver (11) would similarly facilitate interconnection with Wi-Fi-enabled wireless communication devices. By directly incorporating these prevalent wireless technologies into the communication bridge (10), connection to control interfaces on smartphones, tablets, computers, and other devices can be established without requiring additional hardware on user side.

[0064] Additionally, or alternatively, the first transceiver (11) in the communication bridge (10) provides direct wireless connectivity to wireless communication devices, connecting the bridge (10) into the home network router enables additional communication capabilities. Wired connection may be Ethernet, for instance connecting via RJ45 Ethernet cable and compatible physical layer (PHY) interface allows leveraging wired home network infrastructure. Ethernet provides reliable high-speed data rates for streaming telemetry or video from the cleaning robot (20). Wired connection may be a powerline communication (PLC) that uses existing electrical wiring to carry high frequency data signals by modulating them on the 50 / 60 Hz power current. Integrated PLC modem and coupling circuits in the bridge (10) enable connectivity by plugging into AC outlets.

[0065] The frequency converter (12) transforms incoming signals from the first transceiver (11) at above 1 GHz frequencies to sub-1 GHz frequencies. The frequency converter (12) may be a SiGe Semiconductor SG610 Sub-GHz Frequency Synthesizer (converts from 2.4 GHz to 915 MHz) or any Synthesizer using industrial, scientific, and medical” (ISM) bands as 13.553MHz and 2.6.957MHz.

[0066] For example, the frequency converter (12) may downconvert a 2.4 GHz Wi-Fi signal to a 900 MHz radio frequency signal for improved water penetration (provide example desired output frequency). The frequency converter (12) converts the first frequency signals from the first transceiver (11) to a second low radio frequency less than 1 GHz. The frequency conversion allows for better propagation of wireless signals underwater. Frequencies less than 500 MHz may provide suitable water penetration depth for pool cleaning robot communication. The second transceiver (13) receives and transmits the low frequency converted signals output from the frequency converter (12). The second transceiver (13) communicates wirelessly with the underwater pool cleaning robot (20).

[0067] The underwater pool cleaning robot (20) has a third Transceiver (21). The third transceiver

[0068] (21) may receive the 900 MHz transmission from the second transceiver (13) while submerged. A

[0069] 900 MHz antenna design optimized for underwater operation may be used. The third transceiver (21) in the pool cleaning robot (20) communicates directly with the second transceiver (13) in the communication bridge (10) using the low radio frequency signals less than 1 GHz. 2.1.2. Two-way communication between the robot (20) and communication bridge (10) enables monitoring and control of the cleaning robot (20) while submerged. The third transceiver (21) may be a Hope Microelectronics RFM22B 900 MHz ISM Band Transceiver or a Linx Technologies TXM-900- HP3-PPS 900 MHz SMT Transceiver Module.

[0070] Optionally a wireless communication protocol is used to support a comprehensive set of message types and responses to enable full robot control and monitoring, for example one or more of the following control Commands:

[0071] • Homing signals for robot location and docking

[0072] • Manual movement control via joystick / directional instructions

[0073] Start / Stop cleaning operations • Operation mode changes (spot clean, full clean, etc.)

[0074] Additionally or alternatively, the wireless communication protocol is used to support one or more status requests and responses such as:

[0075] • Location / position data

[0076] • Filter status and capacity

[0077] • Battery charge level

[0078] • Cleaning progress and estimated completion time

[0079] • Sensor measurements (water quality, temperature, etc.)

[0080] Additionally or alternatively, the wireless communication protocol implements robust error handling through one or more of:

[0081] • Packet sequence numbering and acknowledgment

[0082] • Automatic retransmission of lost packets

[0083] • Signal quality monitoring with dynamic frequency adjustment

[0084] • Heartbeat signals to verify connection status

[0085] • Graceful degradation during poor signal conditions

[0086] Additionally or alternatively, the wireless communication protocol employs one or more of:

[0087] • Local data buffering at both bridge and robot

[0088] • Store-and-forward message queuing

[0089] • Priority-based message handling ensuring critical commands are delivered first

[0090] • Automatic connection reestablishment procedures

[0091] • Fallback to autonomous operation during extended disconnections

[0092] In some embodiments, the communication bridge (10) communication bridge (10), for example using a signal processing module, enhances communication reliability through dynamic adjustment of transmission parameters based on environmental conditions. The signal processing module may be implemented as a combination of hardware and software components integrated within the at least one communication bridge.

[0093] The signal processing module may include sensors configured for monitoring various water conditions that affect signal propagation. These water conditions may include, but are not limited to, water temperature, mineral content, pH levels, turbidity, and conductivity. For example, the signal processing module may employ a temperature sensor that provides real-time temperature readings, as temperature variations can significantly impact radio frequency signal propagation through water. Additionally, conductivity sensors may measure the water's electrical conductivity, which varies with dissolved mineral content and affects signal attenuation characteristics.

[0094] In operation, the signal processing module may receive input from these sensors and processes the data to determine optimal transmission parameters. The module employs algorithms that correlate specific water conditions with signal propagation characteristics. For instance, when the module detects increased mineral content that may interfere with signal transmission, it may dynamically adjust the second low radio frequency within its operating range to optimize penetration. These frequency adjustments may occur within the range of 30 MHz to 500 MHz, with the specific frequency selected based on current water conditions.

[0095] Furthermore, the signal processing module may implement dynamic power adjustment capabilities. The module receives depth information from the at least partly submerged cleaning platform, which may be determined through pressure sensors or other depth measurement mechanisms integrated into the platform. Based on this depth information, the module calculates the optimal transmission power required to maintain reliable communication while minimizing power consumption. For example, when the cleaning platform operates at greater depths, the module may increase transmission power to compensate for increased signal attenuation. Conversely, when the platform operates closer to the surface, the module may reduce transmission power to conserve energy while maintaining adequate signal strength.

[0096] The signal processing module may employ adaptive algorithms that learn from historical performance data. These algorithms analyze patterns in signal quality metrics correlated with various water conditions and depth scenarios to refine the adjustment parameters over time. The module maintains a database of these correlations, allowing it to predict optimal settings for similar conditions in future operations.

[0097] The module may include a feedback mechanism that continuously monitors communication quality and adjusts parameters in real-time. If signal quality degradation is detected, the module may initiate a series of incremental adjustments to both frequency and power settings until optimal communication is restored. This feedback loop ensures robust communication even as water conditions change during operation.

[0098] In some embodiments, the signal processing module may coordinate with multiple communication bridge nodes in a mesh network configuration. When multiple nodes are present, the module can selectively activate or deactivate nodes and adjust their individual power levels to optimize coverage while minimizing interference and power consumption.

[0099] The signal processing module may also implement emergency protocols for extreme conditions. For instance, if water conditions severely degrade signal quality, the module may temporarily increase power output beyond normal operating levels to maintain essential communication links with the cleaning platform. These emergency protocols include safeguards to prevent damage to the communication hardware while ensuring critical commands can still be transmitted.

[0100] It should be noted that although system (1) is described with the underwater pool cleaning robot (20), it might be provided without any underwater pool cleaning robots and adapted to communicate with one or more underwater pool cleaning robots which are differently sold and manufactured.

[0101] Optionally, the communication bridge (10) includes a controller (15) that performs digital data processing and routing tasks to enable seamless transmission between the wireless communication devices and the underwater cleaning robot (20).

[0102] The communication bridge (10) may include a special antenna for the low frequency side, for instance a directional antenna that focuses sensitivity gain only to a target area, such as a pool area.

[0103] The controller (15) may manage computational tasks to enable reliable data transfer using buffering, checking, routing, and media conversion protocols. A microprocessor or microcontroller integrated circuit is utilized along with program and working memory modules. For example, data packets received from wireless communication devices via the Wi-Fi or Bluetooth first transceiver (11) are buffered in memory to assemble complete insured transmissions. Cyclic redundancy checks (CRC) or other error detection coding helps validate accuracy. Once reliably received, packets are routed to the frequency conversion stage. Appropriate data headers, modulation, encryption, chunking, and compression techniques prepare the wireless network data for low frequency transmission through the underwater medium. The controller (15) ensures seamless transition between the two physical layers. Similarly, data received from the cleaning robot (20) via the low MHz transceiver (13) is formatted back to packets compatible with wireless communication device networking stacks. Protocol conversion, error checking, data integrity, and appropriate buffering enables latency-tolerant transmission. Thus, the controller (15) in the communication bridge (10) may act as a coordinating gateway to enable underwater connectivity as an extension of conventional wireless networks and devices.

[0104] Optionally, the communication bridge further includes a cellular transceiver for connecting to the internet, for instance for remote control and monitoring. Integrating a cellular modem and transceiver module into the communication bridge (10) allows data transmission over cellular bands used by mobile network operators. For example, modules like the Quectel BG96 support communication using LTE CAT-MI and NB-IoT protocols on bands including 700 MHz, 800 MHz, 900 MHz, and 2 GHz. Cellular connectivity allows the bridge (10) to relay information between the cleaning robot (20) and the internet via the mobile broadband infrastructure. Users can then access robot status and telemetry from anywhere with internet connectivity rather than just within local wireless range.

[0105] Optionally, the bridge (10) interfaces with one or more cloud servers to provide remote monitoring and control through a dashboard web application and / or for integration with a mobile app for notifications and control. Such a connection also allows over-the-air firmware updates to the cleaning robot (20) and performing big data and analytics for usage patterns and maintenance.

[0106] Optionally, the frequency of the first transceiver comprises any wireless frequency above 1 GHz and the low radio frequency of the second transceiver is less than 500 MHz. The first frequency for communication between the bridge and wireless communication devices is any commonly used wireless frequency above 1 GHz. This includes public spectrum bands used by protocols like Wi-Fi (2.4 GHz and 5 GHz) and Bluetooth (2.4 GHz). Using an unlicensed ISM band for the first frequency allows connection with consumer electronics without needing additional hardware or infrastructure on the wireless communication device side. The second frequency transmitted from the bridge through the water to the cleaning robot is optimized for penetration by being less than 500 MHz. Attenuation of electromagnetic waves in water increases with higher frequencies. By converting the first frequency down to the sub-500 MHz range for the underwater communication segment, the signal can penetrate deep enough to maintain a reliable link with the pool cleaner operating at unlimited depth . Any frequency from 30 MHz up to 500 MHz could be selected as the second frequency, depending on factors such as water condition, cleaner depth rating, and regulatory compliance.

[0107] Optionally, the communication bridge is positioned on any surface located externally and proximally to the pool. By placing the bridge on any external surface, for example near the pool (e.g., on a wall or floating on the water), it allows for flexible installation rather than needing a fixed location. For example, the communication bridge maybe mounted on a pool deck wall or fence near' the water, attached to the exterior of a pool pimip / filter housing, and / or installed atop a patio table or exterior wall if within wireless range of the pool / robot. The qualification of being proximal or near to the pool indicates that the bridge hardware needs to be dose enough that the signals can adequately penetrate the water to communicate with the submerged robot. Longer- range low frequency signals could enable farther placement from poolside. A maximum range tested during development would determine limitations on placement. Allowing surface mounting provides both fixed and removable options for integrating the communication bridge with the pool ecosystem. No special infrastructure or cabling is necessitated.

[0108] According to some embodiments of the present invention, the communication bridge may be implemented in multiple installation architectures for optimal coverage and reliability.

[0109] Optionally, the communication bridge comprises a fixed installation configuration. In such embodiments, the communication bridge includes a wall-mounted unit connected to direct AC power and enclosed in a weatherproof housing. The fixed installation optionally incorporates integrated cable management systems and surge protection circuits. According to some embodiments, the fixed installation further includes a backup battery system configured to maintain operation during power outages. The fixed installation may additionally comprise an Ethernet or powerline connectivity module for integration with a home network.

[0110] According to another embodiment, the communication bridge comprises a floating installation configuration. In such embodiments, the floating installation includes a solar-powered buoy design with integrated battery storage. The floating installation optionally comprises a stabilized antenna platform configured to maintain consistent signal orientation regardless of water movement. According to some embodiments, the floating installation includes an adjustable depth positioning mechanism for signal optimization. The floating installation may additionally include a tether system providing power and network connectivity.

[0111] Optionally, the communication bridge system comprises a hybrid configuration combining multiple installation types. In such embodiments, the hybrid configuration includes a primary' fixed bridge operating in conjunction with one or more secondary floating units. The hybrid configuration optionally incorporates automated handoff mechanisms configured to transition communication between bridge units based on measured signal strength parameters. According to some embodiments, the hybrid configuration implements load balancing algorithms across multiple bridges to manage high-bandwidth operations. The hybrid configuration may additionally comprise redundant power and network connections to ensure continuous operation in critical installations.

[0112] According to some embodiments, the power subsystem of any bridge configuration comprises automatic source switching circuitry. The power subsystem optionally includes smart charging controllers for battery management. In certain embodiments, the power subsystem incorporates power consumption monitoring and optimization algorithms. The power subsystem may additionally comprise thermal management systems configured to maintain stable operation across varying environmental conditions.

[0113] The terms "comprises", ’comprising", "includes", "including", "having" and their conjugates mean "including but not limited to". This applies to all embodiments described herein regarding installation architectures and power systems.

[0114] Optionally, the communication bridge comprises a power supply selected from a group consisting of: a direct AC line connection, a battery, a solar panel, or combinations thereof. Connecting directly to existing AC power lines nearby provides continuous unlimited power. This would enable permanent installation of the communication bridge. Alternatively, batteries can offer portable, wireless operation. Rechargeable lithium batteries could provide months to years of standby and active runtime. Optionally, solar cells and energy storage accumulators are incorpora ted into the bridge, allowing completely wireless and weatherproof operation without any- wired connections needed. Energy harvesting from the sun gives renewable charging.

[0115] Allowing various power supply circuits accommodates different installation environments and use cases. For example, a tech could diagnose intermittent connectivity issues by operating bridge on battery power if AC line noise was suspected. Backup battery maintains functionality during electrical outages.

[0116] Optionally, the underwater pool cleaning robot (20) incorporates a microcontroller (22) to process received instructions and perform autonomous operations. The microcontroller (22) may execute a stored firmware to parse digitally -encoded commands received from the communication bridge (10) via the low frequency transceiver (21). Rule sets and lookup tables help interpret instructions to activate motors, sensors, or adjust internal variable states accordingly. In use, the microcontroller (22) may continually poll measurement updates from integrated sensors to monitor cleaning performance. This valuable robot health / telemetry data feedback feeds status reports transmitted back externally through the water medium.

[0117] Reference is now' made to Fig. 2 which shows a flowchart of the communication method with a submerged pool cleaning robot, according to some embodiments of the present invention. First, as shown at 201, a communication bridge device, structurally waterproofed, is installed poolside with proximity in meters to the water in terms of optimal wireless signal transmission. Cable glands, tubing, and adequate seals protect interior electronics. Now, as shown at 202, wireless communication devices such as smartphones, tablets, or computers connect to the Communication Bridge over regular wireless local connections like Bluetooth or Wi-Fi. Familiar interfaces for automation control are preserved above water. Now, as shown at 203, the Communication Bridge receives commands and digitizes data into packet form to begin conversion for underwater. Protocols are lightweight considering round-trip latency. Buffering schemas handle data integrity issues like interference or transmission gaps. Now, as shown at 204, high frequency signals from Wireless communication devices are down converted to lower megahertz frequencies between 30 MHz and 500 MHz using analog or digital mixers and local oscillators. Respective modulation schemes are maintained.

[0118] As shown at 205. low frequency RF signals are emitted directed toward the pool water using a compact, rated watertight antenna. Beam characteristics aim distribution into the estimated robot work zones accounting for reflections. As shown at 206, underwater Cleaning Robot operating at the pool bottom surface receives low frequency signals penetrating the water medium in its vicinity. An integrated hydrodynamic antenna minimally impacts movement. As shown at 207, this allows a robot firmware logic to interpret commands or data packets from Communication Bridge appropriately. Status updates, Water quality sensor data, media content such as images, audio and videos, sensor telemetry, deviations, and threshold alerts are encoded for periodic transmission through water to bridge. As shown at 208, communication Bridge repetitively transmits refresh, synchronization, or heartbeat style signals allowing the robot to respond with latest data in small chunks. Failsafe mechanisms recover disabled links. Thus, reliable two-way wireless control connectivity is achieved with submerged pool cleaning robots by bridging between conventional wireless devices above water and optimized underwater transmission schemes.

[0119] It is expected that during the life of a patent maturing from this application many relevant transceivers will be developed and the scope of the term a transceiver is intended to include all such new technologies a priori.

[0120] The terms "comprises", "comprising", "includes", "including", “having” and their conjugates mean "including but not limited to".

[0121] The term “consisting of’ means “including and limited to”.

[0122] The term "consisting essentially of" means that the composition, method or structure may include additional ingredients, steps and / or parts, but only if the additional ingredients, steps and / or parts do not materially alter the basic and novel characteristics of the claimed composition, method or structure.

[0123] Throughout this application, various embodiments of this invention may be presented in a range format. It should be understood that the description in range format is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention. Accordingly, the description of a range should be considered to have specifically disclosed all the possible subranges as well as individual numerical values within that range. For example, description of a range such as from 1 to 6 should be considered to have specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual numbers within that range, for example, 1, 2, 3, 4, 5, and 6. This applies regardless of the breadth of the range.

[0124] Whenever a numerical range is indicated herein, it is meant to include any cited numeral (fractional or integral) within the indicated range. The phrases “ranging / ranges between” a first indicate number and a second indicate number and “ranging / ranges from” a first indicate number “to” a second indicate number are used herein interchangeably and are meant to include the first and second indicated numbers and all the fractional and integral numerals therebetween.

[0125] It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination or as suitable in any other described embodiment of the invention. Certain features described in the context of various embodiments are not to be considered essential features of those embodiments, unless the embodiment is inoperative without those elements.

[0126] It is the intent of the applicant(s) that all publications, patents and patent applications referred to in this specification are to be incorporated in their entirety by reference into the specification, as if each individual publication, patent or patent application was specifically and individually noted when referenced that it is to be incorporated herein by reference. In addition, citation or identification of any reference in this application shall not be construed as an admission that such reference is available as prior art to the present invention. To the extent that section headings are used, they should not be construed as necessarily limiting. In addition, any priority document(s) of this application is / are hereby incorporated herein by reference in its / their entirety.

Claims

WHAT IS CLAIMED IS:

1. A system for enabling communication with at least partly submerged cleaning platform, comprising: at least one communication bridge configured to receive and transmit wireless communication signals, wherein the at least one communication bridge comprises: a first transceiver configured for receiving and transmitting wireless signals at a first frequency via a wireless communication protocol from wireless communication devices; a frequency converter configured for converting the wireless signals from the first frequency to a second low radio frequency less than 1 GHz; and a second transceiver configured for receiving and transmitting the converted wireless signals at the second low radio frequency, wherein the second low radio frequency is configured for enabling the signals to penetrate through water in a pool; and an at least partly submerged cleaning platform configured to operate at underwater depth in the pool, wherein the at least partly submerged cleaning platform comprises a third transceiver configured for receiving and transmitting wireless signals at the second low radio frequency to communicate with the at least one communication bridge while submerged in the pool.

2. The system of claim 1, wherein the at least one communication bridge comprises a plurality of nodes configured for communicating with one another in a mesh network topology.

3. The system of claim 1, wherein the at least partly submerged cleaning platform is configured to provide operating depth information through at least one of: integrated depth sensors, pre-mapped pool depth data, real-time depth mapping systems, or pressure sensors and the second transceiver is configured to dynamically adjust transmission signal strength based on operating depth information of the cleaning platform within a depth range of between 0 and 3 meters.

4. The system of claim 1, wherein: the first frequency comprises a wireless frequency in a range of 2.4 GHz to 5 GHz; and the second low radio frequency is in a range of 30 MHz to 500 MHz.

5. The system of claim 1, wherein the at least one communication bridge is positioned on any surface located externally and proximally to the pool.

6. The system of claim 1, wherein the at least one communication bridge further comprises a power supply selected from a group consisting of: a direct AC line connection, a battery, a solar panel, or combinations thereof.

7. The system of claim 1, wherein the first transceiver is configured to communicate directly with wireless communication devices using a Bluetooth or Wi-Fi protocol.

8. The system of claim 1, wherein the at least one communication bridge is configured for wired or wireless communication with a home router via an Ethernet, Wi-Fi, Bluetooth, or powerline connection.

9. The system of claim 1, wherein the at least one communication bridge comprises a cellular transceiver configured for connecting to the internet.

10. The system of claim 1, wherein the at least one communication bridge is configured for powerline communication with a home router using existing home power cabling as a transmission medium for data signals.

11. The system of claim 1, wherein the at least one communication bridge further comprises a controller configured to manage two-way data communication between the first transceiver, frequency converter, and second transceiver.

12. The system of claim 1, wherein the at least partly submerged cleaning platform further comprises a microcontroller configured for interpreting received control instructions to alter internal modes, actuate cleaning mechanisms, or return sensor measurements according to programmable logic rules stored in memory.

13. The system of claim 1, wherein the at least one communication bridge comprises: a first bridge node configured for fixed installation on a surface proximate to the pool; and a second bridge node configured for floating installation on a surface of the pool water, wherein the first and second bridge nodes are configured to operate cooperatively in a hybrid configuration.

14. The system of claim 13, wherein the hybrid configuration comprises: a signal quality monitoring system configured for measuring signal strength parameters; and an automated handoffmechanism configured for transitioning communication between the first and second bridge nodes based on the measured signal strength parameters.

15. The system of claim 1, wherein the second transceiver comprises a directional antenna configured for focusing wireless signal transmission specifically within a target pool area.

16. The system of claim 1, wherein the at least one communication bridge is configured for: monitoring water conditions; dynamically adjusting the second low radio frequency based on the monitored water conditions; and modifying signal transmission power based on the underwater depth of the at least partly submerged cleaning platform.

17. The system of claim 1, wherein the second transceiver is configured to: determine a current operating depth of the at least partly submerged cleaning platform within the depth range of 0 to 3 meters; calculate an optimal transmission signal strength based on the current operating depth; and adjust its transmission power output to match the calculated optimal signal strength while maintaining reliable communication and minimizing power consumption.

18. A method for enabling communication with an at least partly submerged cleaning platform, comprising: providing at least one communication bridge located exterior to a pool; receiving and transmitting, via a first transceiver of the at least one communication bridge, wireless signals at a first frequency from wireless communication devices; converting the wireless signals from the first frequency to a second low radio frequency less than 1 GHz using a frequency converter of the at least one communication bridge; transmitting, via a second transceiver of the at least one communication bridge, the converted wireless signals at the second low radio frequency through water in the pool; receiving, via a third transceiver of an at least partly submerged cleaning platform operating at underwater depth, the converted wireless signals; and transmitting, via the third transceiver, response signals at the second low radio frequency to the at least one communication bridge.

19. The method of claim 18, further comprising: monitoring signal quality metrics between multiple communication bridge nodes; determining an optimal signal path based on the monitored signal quality metrics; and routing communication signals through the optimal signal path.

20. The method of claim 18, further comprising: detecting a signal degradation condition; automatically switching to a different frequency band selected from multiple Industrial, Scientific and Medical (ISM) frequency bands based on the detected signal degradation condition.

Images