Patent Document

BACKGROUND INFORMATION  
         [0001]    The present invention relates to data communication. More specifically, the present invention relates to a system for communicating information between a utility metering device, such as a water meter, and a remote location, such as inside a residence or a service provider.  
           [0002]    In the art today, utilities such as water and natural gas providers utilize mechanical devices affixed to the delivery pipe of each customer to determine individual usage. These devices typically use an impeller wheel of some kind in the path of the measured fluid to drive a calibrated, geared system for continually incrementing an analog display (e.g. values on a set of rotary dials) or digital display (e.g. a series of seven segment liquid crystals or light emitting diodes) of accumulated volumetric flow.  
           [0003]    [0003]FIG. 1 provides an illustration of a conventional water meter  104  as used in the art today. A large diameter water main  102  is typically utilized to distribute water to several residential houses (or buildings) in an area. For billing purposes, it is necessary for the provider (in this case, the water company) to know how much water has been used during each billing period. To achieve this purpose, a water meter  104  is used. As stated above, an impeller  106  is often utilized as a component of the water meter  104 . The flow of water  108  causes the impeller  106  to turn. The impeller  106  is directly linked to a geared system  110 , which has been calibrated for volumetric accuracy, to provide a digital or analog display  112  of accumulated flow. The display  112  continually increments with each cubic volume (typically tenths or hundredths of a cubic foot) of water passing the water meter  104 .  
           [0004]    Because water and gas meters in the art today are isolated from the respective service providers, meter readers are necessarily hired to monitor the meter of each assigned building periodically. The information he/she collects is then used to calculate each customer&#39;s bill. Besides being susceptible to human error in data recordation, this process is very expensive and inefficient. Further, this system provides no means for the customer to monitor his/her own service usage in real time. Meter readings can be difficult to interpret and utilize by a customer if they are accessible for the customer to view at all. Further, with the current art, it is difficult for the service provider or the customer to recognize a continuous, low usage—a strong indicator of a leak.  
           [0005]    It is therefore desirable to have a system for communicating information between a utility metering device and a remote location to prevent the above-mentioned problems, as well as for other benefits. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0006]    [0006]FIG. 1 provides an illustration of a conventional water meter as used in the art.  
         [0007]    [0007]FIG. 2 provides an illustration of a remotely readable water meter under principles of the present invention.  
         [0008]    [0008]FIG. 3 provides an illustration of elements of the remotely readable water meter that exist inside the building under principles of the present invention.  
         [0009]    [0009]FIG. 4 a  illustrates the utilization of ultrasonic transmission along the pipe under principles of the present invention.  
         [0010]    [0010]FIG. 4 b  illustrates the usage of audible frequency-range sound transmission for communication between ends of the water pipe under principles of the present invention.  
         [0011]    [0011]FIG. 4 c  illustrates a communication means utilizing a pulsing light source under principles of the present invention.  
         [0012]    [0012]FIG. 4 d  illustrates the usage of a radio frequency (RF) transmission of the water meter flow information under principles of the present invention. 
     
    
     DETAILED DESCRIPTION  
       [0013]    [0013]FIG. 2 provides an illustration of a remotely readable meter under principles of the present invention. A meter  202 , such as a water or gas meter, is attached to a medium, such as the local delivery pipe  214 , in a configuration similar to existing meters from a service distribution line to a destination point, such as the inside of the house  216 . In one embodiment of the present invention, an impeller  204  is caused to turn by the flow of the metered substance (e.g. water)  206  directed through its blades. In one embodiment, an electronic data unit  208  monitors the rotation of the impeller and calculates a volumetric flow rate of the water (or other substance). In one embodiment, the data unit  208  may also utilize memory (not shown) to calculate the total amount of water delivered from a certain point in time, e.g. the last billing period. Further, the data unit  208  may also calculate other statistics such as water delivery volume or flow rate between two specific points in history. As is stated below, in an alternate embodiment such calculations are performed remotely.  
         [0014]    Further, in an embodiment, the water meter  202  provides an electronic display  210  to convey flow information to an operator. Also, in one embodiment, a solenoid-operated valve  212  attached in line of the water pipe  214  is controlled by the data unit  208 . As explained below, in an embodiment, the valve  212  can be utilized by a homeowner to turn off his/her water (or gas, etc.) from inside his house (from his computer, etc.). Also, in one embodiment, a water company (or other service provider) may turn off (or increase or reduce) the water supply remotely for various possible reasons (e.g. a suspected water leak or to enforce water restrictions).  
         [0015]    In one embodiment, the data unit causes an ultrasonic emitter (pinger)  218  to produce an ultrasonic signal inside the pipe  212 . As explained below, in one embodiment the signal may be received by an ultrasonic transducer (receiver) at a different location (not shown) in the pipe span  214 , such as inside the building  216 . In an embodiment where a data unit  208  exists outside of the building  216 , the pinger might provide an alternating signal for transmission of various information produced by the data unit (e.g. flow rate, volume, etc.). In another embodiment, where no external data unit  208  is utilized or where the data unit  208  does not perform any calculations and/or have memory, the pinger  218  would transmit a signal every time a specific number of revolutions of the impeller  204  has occurred. The calculations would occur remotely, utilizing these signals. In another embodiment, the impeller  204  recharges a battery or capacitor (not shown) running the meter&#39;s electronics in order to minimize necessary maintenance.  
         [0016]    [0016]FIG. 3 provides an illustration of elements of the remotely readable water meter that exist inside the building  302  under principles of the present invention. As explained above, in one embodiment of the present invention, an ultrasonic transducer (receiver)  306  is utilized to receive signals from the ultrasonic pinger  218  (See FIG. 2). As stated above, in one embodiment, these signals are representative of the number of revolutions of the impeller  204  (See FIG. 2). In an embodiment, this information is used by an indoor data unit  304  to calculate such things as current and/or past flow rates and/or flow volumes, as well as other flow-related statistical analysis. In one embodiment, the calculated information may be conveyed by an electronic display attached to the data unit  304 . In addition to, or in the alternative, flow information may be communicated to a personal computer  308 .  
         [0017]    Further, in one embodiment, the personal computer  308  is capable of forwarding flow information to the water company  310  via the Internet (or a dedicated connection, etc.)  312 . In an alternate embodiment, the flow information is communicated  314  to the water company  310  directly from the data unit  306 . In one embodiment, the water company  310  may use this information to calculate a customer&#39;s bill or to determine if there&#39;s a potential water leak at a customer&#39;s residence. Also, this information may be used to determine compliance with water use restrictions such as seasonal ‘no lawn watering’ on certain days of the week. Further, the water company could institute different pricing for usage at different times of the day. A schedule may be utilized that is developed based on peak usage times of the area. This would help the water company  310  more readily balance supply and demand throughout all time periods.  
         [0018]    In one embodiment, communication may occur in the opposite direction—back to the water meter. In one embodiment, near the receiving device (e.g. ultrasonic transducer  304 ) inside the building, there would also be a sending device (e.g. ultrasonic emitter), and near the sending device (e.g. ultrasonic emitter) outside the building, there would also be a receiving device (e.g. ultrasonic transducer). In one embodiment, if flow information is stored at an outdoor data unit  208  (See FIG. 2), the information can be accessed upon request. In another embodiment, the customer or the water company  310  can utilize the connection to the valve  212  (See FIG. 2) to open or close (or partially restrict) the flow of water from a remote location.  
         [0019]    Further, with a personal computer  308  utilized, the customer may continuously monitor his/her own water usage in order to more effectively conserve. Also, it may be of great interest to a user to learn his/her usage patterns.  
         [0020]    [0020]FIGS. 4 a - 4   d  illustrate some different envisioned embodiments for communication means along the local delivery pipe  402  under principles of the present invention. In FIG. 4 a,  the utilization of ultrasonic transmission along the pipe  402  under principles of the present invention is illustrated. As explained above, in one embodiment, an emitter (pinger)  404  produces an ultrasonic signal that is received by an ultrasonic receiver (transducer)  406  inside the building  406  down the pipe. As stated above, communication may occur in the opposite direction (back to the water meter  408 ) with the attachment of an additional pinger and an additional transducer at the reverse ends of the pipe (not shown).  
         [0021]    [0021]FIG. 4 b  illustrates the usage of audible frequency-range sound transmission for communication between ends of the water pipe  402  under principles of the present invention. In one embodiment, an electric solenoid-actuated hammer device  408  hits a surface which is acoustically coupled to the water pipe  402 . An alternate embodiment may include a mechanically actuated hammer device. In an embodiment, the sound created by this impact may be received by a microphone (audio transducer)  411  further down the pipe  402 . As stated above, additional components may be added in a reverse configuration to provide reverse communication.  
         [0022]    [0022]FIG. 4 c  provides a communication means utilizing a pulsing light source  410  under principles of the present invention. In one embodiment, a pulsing light  410  transmits a signal to the other end of the pipe by flashing a specific pattern. The light signal is received in one embodiment by a light detector further down the pipe  402 .  
         [0023]    [0023]FIG. 4 d  illustrates the usage of a radio frequency (RF) transmission of the water meter flow information under principles of the present invention. In one embodiment, an RF transmitter using a protocol, such as Bluetooth (Version 1.1, Feb. 22, 2001), forwards the flow information to an RF receiver  416  down the pipe  402 .  
         [0024]    Although several embodiments are specifically illustrated and described herein, it will be appreciated that modifications and variations of the present invention are covered by the above teachings and within the purview of the appended claims without departing from the spirit and intended scope of the invention.

Technology Category: 4