Patent Document

CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims the benefit of and priority to U.S. Provisional Patent Application No. 61/779,552, filed Mar. 13, 2013, entitled “Means for Providing Internet Connectivity to Swimming Pool Equipment,” the entire contents of which are incorporated herein by this reference. 
     
    
     FIELD OF THE INVENTION 
       [0002]    This invention relates to methods of establishing communications with equipment and more particularly, but not necessarily exclusively, to methods, systems, and devices for retrofitting or otherwise furnishing to pool and spa equipment capabilities of communicating via radio frequency signals or otherwise. 
       BACKGROUND OF THE INVENTION 
       [0003]    Equipment such as pumps and filters, for example, are typically included as components of water-recirculation systems of swimming pools and spas. Historically, this equipment has lacked any electronic communications capabilities. Indeed, some components of these water-recirculation systems may lack even an electrical supply, wholly preventing them from communicating electronically. 
         [0004]    More recently, users of pools and spas have realized that ability to adjust operations of pool and spa equipment remotely may have benefit to them in numerous situations. Commonly-owned U.S. Patent Application Publication No. 2012/0185571 of Uy details certain systems and methods for doing so. Some systems of the Uy application include a computerized controller and a networking device configured to transfer signals between transmit-capable pool equipment, on the one hand, and mobile or fixed control devices such as laptop or desktop computers or conventional smart phones (as examples). The mobile or fixed control devices may be remote from the pool equipment, furthermore, and signals may be transmitted via the Internet if appropriate or desired. 
         [0005]    Although systems and methods of the Uy application are commercially successful, they do not resolve the problem of furnishing signal-transmission and -receipt capabilities to pool equipment that, as made or deployed, lacks such capabilities. The systems and methods further do not address supplying wireless signal-transmission and -receipt competencies to this equipment. 
         [0006]    U.S. Patent Application Publication No. 2014/0027359 of Stiles, Jr., et al., discloses an example of a pumping system in which a controller controls operation of a motor of the system. The controller, motor, and pump may form a single unit, or the controller may be mounted onto a housing for the motor and pump. Sensors may be “operatively connected” to the controller to “provide . . . sensory information thereto.” See Stiles, Jr., col. 3, ¶¶ 0027-28. No other “communication” appears contemplated by the system of the Stiles, Jr., application, however, nor is any radio frequency (RF) or other wireless signal-transmission and -receipt ability ascribed to any component of the system. 
         [0007]    Internet connectivity with an equipment pad at a pool currently is limited to certain products with built-in control systems or that connect to a master control system via electrical wires. The master control system may, in turn, connect wirelessly to the Internet via a router. Missing, however, is any solution for connecting to the Internet any components lacking electrical power or electrical supply wires. 
       SUMMARY OF THE INVENTION 
       [0008]    The present invention provides such a solution. Available both for new manufactures and for retrofitting existing equipment, the present invention provides communications capabilities to components that may lack electrical power or supply wires. Devices of the invention preferably may be easily configurable by homeowners or other users or servicers of pools and spas as well. 
         [0009]    At least some versions of the invention include wireless RF devices that connect to various types of pool equipment through (preferably existing) fittings, ports, or other attachment or access locations. For example, certain of these devices may be screwed or otherwise inserted into existing drain ports of pumps or pressure gauges of filter housings. The devices are capable of obtaining desired information and transmitting it remotely for direct or indirect connection to the Internet. Alternatively or additionally, they may receive information and act responsively (as by actuating another device, for example). The devices beneficially may be low-power, battery-operated digital devices, although other devices—and other power-generating means (e.g. solar power, water turbines, piezoelectric devices, etc.) may be employed instead. 
         [0010]    Communications protocols such as ZigBee and ZWave are commonly used in home automation systems to interconnect low-power components in a wireless network within the home. The network may be connected to the Internet through a wireless gateway or other device. Devices of the present invention may be compatible with these or other communications protocols. Although wireless RF devices are presently preferred, wired devices or wireless devices signalling in other manners (e.g. laser, ultrasonic, sonic, infrared, ultraviolet, optically, etc.) may alternatively or additionally be used. The devices also may transmit self-identifying information or information relating to their locations in a pool water-circulation system. 
         [0011]    Once inserted and operational, devices of the invention may gather and transmit various types of information. Non-limiting examples of such information include such things as filter housing pressure, pump housing pressure (including decreased pressure or “vacuum”), pump or filter turbidity, chemical characteristics of pool or spa water, water temperature, water flow rate, number of on/off cycles of the recirculating system, or run time (either for a cycle or aggregated over multiple cycles) of the system. In particular, pressure readings obtained of water in a circulating system may allow for calculation or other determination of pump performance over time. By passing some or all of the information to the Internet, it may be processed or accessible remote from the pool equipment pad and, if appropriate, result in operational adjustments being made or suggested. 
         [0012]    It thus is an optional, non-exclusive object of the present invention to provide communications capabilities to components that may lack electrical power or supply wires. 
         [0013]    It is another optional, non-exclusive object of the present invention to provide communications capabilities to such components of water-recirculation systems of swimming pools and spas. 
         [0014]    It is also an optional, non-exclusive object of the present invention to provide wireless RF devices that mechanically connect to such components through existing fittings, ports, or other attachment or access locations. 
         [0015]    It is a further optional, non-exclusive object of the present invention to provide wireless devices capable of gathering information about the component, system, or water of the system and transmitting it remotely. 
         [0016]    Other objects, features, and advantages of the present invention will be apparent to those skilled in appropriate fields with reference to the remaining text and the drawings of this application. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]      FIG. 1  is a perspective view of a pump useful as part of a pool water recirculation system with exemplary devices of the present invention connected to its drainage ports. 
           [0018]      FIG. 2  is a perspective view of a portion of the pump, and a partly-exploded view of the exemplary devices, of  FIG. 1 . 
           [0019]      FIG. 3  is a perspective view of a portion of a filter useful as part of a pool water recirculation system together with an exemplary device of the present invention incorporated into a filter-loading gauge. 
           [0020]      FIG. 4  is a perspective view of the portion of the filter of  FIG. 3  with the exemplary device of that figure connected thereto. 
       
    
    
     DETAILED DESCRIPTION 
       [0021]    Depicted in  FIGS. 1-2  is a pump P useful in a water-recirculation system. Pump P may be conventional, as the present invention is especially adapted for retrofitting existing components with communications capabilities. Pump P need not be conventional, however, as the present invention is not limited to use with existing products or even with pumps. 
         [0022]    The conventional pump P of  FIGS. 1-2  includes inlet  10  and outlet  14 . Included within pump P may be such things as a strainer basket, an impeller, and a motor. In use, the motor turns the impeller, drawing water through inlet  10 , the strainer basket, and the impeller before exiting via outlet  14 . The water-flow path between inlet  10  and the impeller is typically called the “vacuum side” of pump P, whereas the path between the impeller and outlet  14  is frequently referred to as the “pressure side” of the pump P. 
         [0023]    Conventionally, pump P includes drainage ports  18  and  22  on its “wet end.” Port  18  is present on the “vacuum side” of the pump P, whereas port  22  is in the “pressure side” path of water within the pump P. When pump P is not in use, port  18  may be used to drain water that has passed through inlet  10  and the strainer basket but not yet entered the impeller. By contrast, port  22  may be employed to drain water that has passed through the impeller but not yet exited outlet  14 . Ports  18  and  22  traditionally are threaded so as to receive threaded plugs, with the plugs configured to seal the ports  18  and  22  (at least) when pump P is in use. For drainage, the plugs simply may be unscrewed so as to expose the ports  18  and  22 . 
         [0024]    As the strainer basket fills with debris, the vacuum pressure (i.e. the reduction in pressure below ambient) increases in the region between the strainer basket and the impeller. Hence, measuring vacuum pressure in this region as a function of time may be beneficial. Because port  18  already exists in this region, configuring a vacuum-pressure probe to fit in the port  18  likewise would be beneficial. 
         [0025]    Similarly, obtaining pressure measurements over time on the “pressure side” of pump P may be advantageous. Together with the vacuum pressure measurements and, perhaps, other data (e.g. motor speed), various important characteristics of the water-recirculation system may be calculated, deduced, or otherwise determined. As (non-limiting) examples, system characteristics such as water-flow rate and energy usage could be determined. 
         [0026]    Illustrated in  FIGS. 1-2  are devices  26 A and  26 B consistent with the present invention. Devices  26 A and  26 B are configured to fit within ports  18  and  22 , respectively, replacing conventional drain plugs. In the exemplary versions shown, therefore, devices  26 A and  26 B are threaded, may be used together with washers, gaskets, or o-rings  30  if desired to facilitate sealing of the ports  18  and  22 , and have at least portions of their bodies positioned externally of pump P. Devices  26 A and  26 B need not be threaded or shaped, configured, or positioned as depicted, however, as will be apparent to persons skilled in the relevant art. 
         [0027]    Unlike conventional drain plugs, devices  26 A and  26 B include sensors and, preferably, wireless RF transmitters. Alternatively, one or both of devices  26 A and  26 B could communicate via wire or other medium either remotely or one to the other or use other carrier means such as laser, ultrasonic, sonic, infrared, ultraviolet, or optics signals. In some cases either or both of devices  26 A and  26 B could include wireless or wired receivers as well. 
         [0028]    In presently-preferred versions of the invention, devices  26 A and  26 B include pressure gauges so as to sense and measure pressures at ports  18  and  22 . The gauges may be transducers so as to convert mechanical energy to electrical energy. Transmitters within devices  26 A and  26 B transmit the pressures, preferably doing so either continuously or periodically over a predetermined or determinable interval of time. Each of the gauges and transmitters may itself be conventional as long as it is capable of functioning adequately within device  26 A or  26 B. The devices  26 A and  26 B further may if desired be low-power digital devices including batteries or other power sources. 
         [0029]    Devices  26 A and  26 B may be part of a network of devices, including similar devices deployed in fittings or ports of (or otherwise in connection with) other components of water-recirculation systems. If desired they may transmit (and, possibly, receive) wirelessly consistent with ZigBee, ZWave, or other common communications protocols. Preferably (although not necessarily), signals originating with one or both of devices  26 A and  26 B eventually are conveyed via the Internet for processing or consideration at a remote location. For example, information obtained using one or more of devices  26 A and  26 B could be forwarded to a smart phone, laptop, desktop, tablet computer, or other equipment of a homeowner or pool servicer for processing or consideration. Alternatively, the information may be conveyed directly (either wirelessly or via wire) to an on-board pump controller or other component. 
         [0030]    If device  26 A senses a rapid rise in vacuum (i.e. a rapid pressure decrease), for example, the strainer basket may be clogged with debris, inhibiting adequate water flow to the impeller. A decision to withdraw power from the motor of pump P may thus be made automatically or manually, remotely or nearby, based at least in part on information obtained from device  26 A. Information from devices  26 A and  26 B additionally could be used to help determine flow rates of water through pump P as a function of time, energy usage of the pump P, and dynamic head of water to be pumped by pump P, etc., for conveyance to a homeowner, servicer, manufacturer, or otherwise via the Internet or otherwise. 
         [0031]    As noted earlier, devices identical or similar to devices  26 A or  26 B may be used in connection with other pool or spa equipment.  FIGS. 3-4  depict such usage in connection with filter F. The filter F may have port  34  into which conventionally a gauge is placed to indicate loading of the filter with debris over time. However, with the present invention, gauge  38  may include a transmitter as well as a debris-loading sensor. As with preferred versions of devices  26 A and  26 B, preferred embodiments of gauge  38  include low-powered devices with wireless RF transmitters configured for networking using any suitable communications protocol. Indeed, devices  26 A and  26 B and gauge  38  advantageously may form part of the same network when used in the same water-recirculation system. If any of devices  26 A or  26 B or gauge  38  includes a processor, information even may be conveyed among the devices and gauge themselves. 
         [0032]    The foregoing is provided for purposes of illustrating, explaining, and describing embodiments of the present invention. Modifications and adaptations to these embodiments will be apparent to those skilled in the art and may be made without departing from the scope or spirit of the invention. For example, devices of the invention may sense information such as (but not limited to) temperature, flow, salinity, pH, ORP, FAC, turbidity, level, motion, gas trap characteristics, etc. Moreover, “pool,” “swimming pool,” and their plurals may include within their definitions spas and other water-containing vessels used for recreational or therapeutic bathing or swimming. The entire contents of the Uy and Stiles, Jr. patent applications are incorporated herein by this reference.

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