Abstract:
A system and method having a plurality of antennas located at selected spaced intervals along an elongate feed or drinking trough. Each animal, to be monitored, is equipped with a passive transponder having a unique identification code. An electronic control system transmits an electronic signal sequentially to each one of the plurality of antennas such that each activated antenna emits a signal and, any passive transponder sufficiently adjacent to the activated antenna, receives the signal and generates a return electronic signal which is sent to the activated antenna. A computer, coupled to the plurality of antennas, receives a return signal from the passive transponder and generates preliminary results concerning an animal behavior which effects animal consumption activity. Finally, a modification factor, incorporated in the computer, modifies the preliminary results to generate a final result that predicts, with an acceptable level of predictability, the animal behavior which affects the consumption activity to be monitored.

Description:
FIELD OF THE INVENTION 
     This invention relates to a passive transponder identification system and a method of using the same, more specifically, a system which is capable of being used with multiple transponders to monitor the feeding and drinking behavior of animals in order to predict a variety of conditions relating to health, productivity and quality. 
     BACKGROUND OF THE INVENTION 
     Over the past forty years or so passive radio frequency identification has been used to automatically identify objects. One example of a practical application of this technology is in monitoring the feeding and drinking habits of animals. Passive transponder technology has been used to monitor animal feeding behavior when animals are in a closely controlled environment with each animal having its own feeding stall. In such situations, it is possible to monitor weight loss or gain by utilizing conventional weighing devices. 
     Studies on animal behavior have determined, however, that side by side feeding in long troughs induces competitiveness between the animals which results in, among other things, increased feed intake and faster growth of the animals. 
     The basic elements of such systems include a reader/transmitter, an antenna and a transponder. The reader/transmitter sends an electromagnetic charge wave through the antenna to the transponder, which uses this energy to transmit a radio frequency signal back through the antenna to the reader/transmitter. Typically, the signal includes an identification code unique to each transponder. In order to monitor the activities of large herds or confined groupings of animals, one must be able to monitor multiple transponders in a relatively small area. With currently available technology it is extremely difficult to read multiple transponders using one reader/transmitter. 
     If each one of the multiple transponders uses the same frequency to transmit its unique identification code back to the reader/transmitter, a single reader/transmitter is unable to readily decipher each individual identification code. In order to make systems with multiple transponders operational, multiple reader/transmitters are required which, in turn, render such systems costly, and will also reduce the area in which the transponders can be simultaneously read. 
     SUMMARY OF THE INVENTION 
     Wherefore, it is an object of the present invention to overcome the aforementioned problems and drawbacks associated with the prior art designs. 
     Another object is to provide a passive transponder identification system that is capable of transmitting to and reading signals sent from multiple transponders, even if all of the transponders utilize the same frequency. 
     A further object of the present invention is to provide an unobtrusive system and method of monitoring the feeding behavior of animals that is adapted for use in a confined side by side feeding and/or drinking environment. 
     It is another object of the present invention to allow more accurate monitoring of the animals to occur by improved positioning of the antennas. For example, the inventors have obtained beneficial results by having a plurality of antennas integrally formed or molded into a large flexible mat which is then installed as a lining along an elongate feeding or drinking trough. 
     Still another object of the present invention is to increase the read range of the transponders while still keeping the system as inexpensive as possible. For example, in a preferred form of the invention, a panel, which houses an RF Generator, is mounted in the central region of the flexible mat housing the plurality of antennas. Alternatively, in a further effort to reduce the manufacturing costs of the flexible mats, it is beneficial to print a conductive ink on a non-conductive substrate to which metals can be plated. Both sides of the substrate are utilized to keep the inductance of the wire(s) leading to the antennas as low as possible. 
     Yet other objects of the present invention are: (1) to reduce the thickness of the flexible mat, (2) to provide a more sturdy and lightweight flexible mat, and (3) to provide a flexible mat that can be readily glued to a conventional feeding or drinking trough to thereby facilitate minimal maintenance of the flexible mat while still providing for a secure attachment of the flexible mat to the feeding or drinking bunk. It is to be appreciated that for utilization in agricultural environments, the flexible mat must be very easy to install, service, connect, disconnect, etc. 
     Still another object of the present invention is to provide a panel, housing a RF Generator, equipped with data storage capabilities and a transmission mechanism to facilitate transmission of data from the panel by means of infrared technology or RF technology. Such remote transmission minimizes the amount of wiring that is necessary for use in this system and avoids the need to have a plurality of wires running from the remote data collection locations to a central monitoring location. The running of such wires, especially in agricultural environments, is costly and such wires can also readily become damaged and/or disconnected. 
     A further object of the present invention is to provide computer software to collect data and facilitate analyzing of the behavior of various animals to be monitored in view of the collected data. In a preferred form of the invention, the software is designed to segregate each day into a plurality of different time periods to highlight the diurnal and nocturnal behavior of animals. By segregating the day into a plurality of time periods, it is possible to distinguish between the various time periods of the day and determine the total elapsed time actually spent feeding or drinking at a trough. The software can then either discount or augment the determined total elapsed time spent feeding or drinking at a trough, by use of a suitable adjustment factor, to allow more accurate prediction of the actual consumption of feed or water by each animal during the determined total elapsed time. The segregation of the day in a plurality of different time periods, in turn, allows a more accurate prediction of whether the animal is sick, healthy, feeding normally, feeding abnormally, has acidosis, etc. 
     According to the present invention there is provided a passive transponder identification system which includes a plurality of transponders, a microprocessor, a single reader/transmitter coupled to the microprocessor, and a computer. A plurality of antennas are provided and each antenna is coupled, via a signal relay circuit, with the microprocessor and the reader/transmitter to facilitate transmission and reception of signals. The microprocessor sequentially activates each one of the plurality of antennas, via the signal relay circuit, to send a signal from the single reader/transmitter to any adjacent transponder(s). An exchange of signals occurs between any adjacent transponder(s) and the activated antenna during the activating sequence. The computer records the transmitted and received signals and maintains and manipulates the obtained data to generate the desired monitoring information. 
     The present invention also relates to a method of monitoring feeding behavior. The first step involves positioning a plurality of antennas at selected spaced intervals along an elongate feeding or drinking trough. The second step involves equipping each animal with a passive transponder with a unique identification code. The third step involves coupling the antennas to the computer which monitors the desired activities of the animals feeding and/or drinking side by side at the trough for animal behaviors which can effect feeding behavior. The last step involves interpreting the data to predict a desired behavior of the animal to be monitored. 
     The present invention relates to a method of monitoring animal feeding behavior, comprising the steps of: 
     providing a plurality of antennas at predetermined locations along one of a feeding location and a drinking location to be monitored; 
     providing each of a plurality of animals with a passive transponder having a unique identification code; 
     transmitting an electronic signal from at least one of said plurality of antennas to any sufficiently adjacent animal provided with a passive transponder and receiving a return electronic signal from any sufficiently adjacent passive transponder; 
     processing said return electronic signal via a computer, to determine preliminary results relating to an animal behavior which affects animal feeding characteristics; and 
     modifying the preliminary results via a modification factor to generate a final result that predicts, with an acceptable level of predictability, the animal behavior which affects a consumption activity to be monitored. 
     The present invention also relates to a system for monitoring animal feed behavior, said system comprising: an elongate mat having a plurality of antennas spaced therealong; a plurality of passive transponders, each passive transponder having a unique identification code so that when the passive transponder is affixed to an animal, the passive transponder facilitates identification of that animal; an electronic control system for transmitting the electronic signal sequentially to each one of said plurality of antennas such that an activated antenna emits the signal and, any sufficiently passive transponder sufficiently adjacent to the activated antenna, receives the signal and generates a return electronic signal which is sent to the activated antenna; a computer, coupled to said plurality of antennas, to receive a return signal from the passive transponder and generating preliminary results to an animal behavior which effects animal feeding characteristics; and modification factor, incorporated in the computer, for modifying the preliminary results to generate a final result that predicts, with an acceptable level of predictability, the animal behavior which effects a consumption activity to be monitored. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will now be described, by way of example, with reference to the accompanying drawings in which: 
     FIG. 1 is a diagrammatic perspective view of the system for monitoring animal feeding or drinking behavior of animals in accordance with the teaching of the present invention; 
     FIG. 2 is a diagrammatic schematic representation showing details of the various components comprising the system of the present invention; 
     FIG. 3 is a diagrammatic representation showing a chalking system for marking a desired animal; 
     FIG. 4 is a diagrammatic representation showing a flow diagram for determining and predicting a behavior of animals to be monitored by the system and method according to the present invention; and 
     FIG. 5 is diagrammatically shows a feed truck supplying feed to a trough. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Turning now to FIGS. 1 and 2, a detailed description concerning the basic components of the present invention will first be provided. As shown in these Figures, a passive transponder identification system  10  generally includes a plurality of transponders  12  (only one of which is shown in FIG.  1 ), a computer  14  (preferable a remotely located computer), a microprocessor  16 , a single reader/transmitter  18 , a plurality of antennas  20  and a flexible mat  22 . 
     The reader/transmitter  18  is coupled to the microprocessor  16  by conventional electrical wiring (not separately labeled) and both components are contained within a sealed container or housing  21  located preferably at a central location along the mat  22 . Each antenna  20  is coupled, via a separate relay circuit  23 , to both the microprocessor  16  and the reader/transmitter  18 , in a conventional manner, to facilitate conveyance of signals to the antennas  20  and return of any received signals from the antennas  20 . The microprocessor  16 , in turn, is coupled (e.g. hard wired or preferably via infrared or RF technology  15 ) to a computer  14  to transmit data and other information between the field installation  25  and the central data collection location  24  which can record and manipulate the received data to monitor virtually any desired activity of the animal  26 . 
     A separate transponder  12 , each with a unique identification code, is implanted, secured or otherwise attached to each individual animal  26  to be monitored. Alternatively, a bowless device, which includes a transponder  12 , can be swallowed by each animal  26  and used to monitor animal activities The remaining components of the passive transponder identification system  10  is positioned at the central data collection location  24 , e.g. a control facility. With the passive transponder identification system  10  described above, it is possible for eighty or more transponders  12  to be accommodated within a relatively small confined area A, e.g. a 175 square foot confined area, for example. 
     It is preferred that the number of antennas  20  approach the number of transponders  12 , i.e. be substantially equal to the number of transponders  12  to be located within the confined area. However, beneficial results have been obtained when one antenna  20  is provided for every two transponders  12  located within the confined area A. The microprocessor  16  is programmed to sequentially activate each one of the plurality of separate spaced apart antennas  20  (or every other antenna  20  to speed up the reading time of the system without compromising the accuracy of the system) via the respective signal relay circuits  23 , to send a transmission signal from the single reader/transmitter  18  and, in turn, receive a return signal from any transponder(s)  12  located sufficiently close (e.g. about 36 inches or so) to the activated antenna  20 . An exchange of signals occurs between any sufficiently adjacent transponder(s)  12  and the activated antenna  20  during the activating sequence. 
     In order to optimize the reading distance, it is preferred that each antenna  20  be wound such that the introduced induction/capacitance still allows for optimum resonance. It is also preferred that a minimum capacitance and inductance be introduced into each of the signal relay circuits  23 . Preferably the circuit  23  measures inductance and introduces the desired amount of capacitance. In order to reduce inductance, the traces should be kept as parallel as possible. In order to reduce resistance, multi-strand wire can be utilized. Extra resistance and/or capacitance can be added on each individual antennas  20  to make the read range of all of the antennas equal to one another 
     The read speed of the system is linear and relates to the number of antennas  20  employed by the passive transponder identification system  10 . To optimize the accuracy of duration measurements, it is important to keep the reading speed as short as possible. The passive transponder identification system  10  is designed so that it will not be switched to sequentially activate another antenna  20  while the signal relay circuit  23 , for one antenna  20 , is still active. Otherwise the inductance and/or the capacitance will create a sparking action over the circuit contacts that adversely affect the longevity of the circuit transistors and signal relays. The signal relay circuit  23  should be inactive for as short a time period as possible during which time the relay is either opened or closed. In addition, it is preferred that the power loads be kept as low as possible so as not to interfere with other associated equipment utilized by the system. 
     In a preferred form of the invention, the plurality of antennas  20  are sequentially activated by the passive transponder identification apparatus  10 , one after another, about every one-tenth of a second for a duration of about 105 milliseconds. By this arrangement, any transponder  12  which is between about 0 inches to about 36 inches away from the activated antenna  20  is sufficiently energized or activated so as to generate and send a return signal to the activated antenna  20  which is received by the activated antenna  20  and conveyed to the computer  14 , by a remainder of the passive transponder identification system  10 , so that the animal carrying the activated transponder  12  can be suitably identified and monitored. 
     Suitable models and manufacturers, for some of the key components of the system, according to the present invention, are as follows: the transponder  12  may be manufactured by Allflex USA of Texas or by Tiris (Texas Instruments); the reader/transmitter  18  may be model number 2510 manufactured by Tiris (Texas Instruments), the antennas  20  may be obtained from GrowSafe Systems Limit of Alberta Canada and the computer  14  may be a standard personal computer. 
     Now that the basis components of the present invention have been described, the method of using the passive transponder identification system  10 , according to the present invention, will now be described in detail. The first step involves positioning a plurality of antennas  20  at selected spaced intervals, e.g. spacing the antennas  20  at a distance of between about 6 inches to about 18 inches apart, along an elongate trough  28 , for example a feeding or a drinking trough. The preferred manner of doing this is to have the plurality of antennas  20  molded sequentially into a large flexible mat  22  which is installed as a permanent or semipermanent lining on either an inwardly or an outwardly facing surface of the trough  28 , or possibly molded as an integral part of the trough. 
     The second step involves equipping each one of the animals  26  to be monitored with a passive transponder  12 . As noted above, each passive transponder  12  is provided with a unique identification code indicative of only the animal  26  to which that passive transponder  12  is equipped or installed. As the feature of providing a unique identification code to each passive transponder  12  is conventional and well known to those skilled in this art, a further detailed description concerning the same is not provided herein. 
     Referring now to FIG. 2, the third step involves coupling the antennas  20 , via the microprocessor  16 , to communicate with the computer  14  to transmit and receive the necessary signals so as to enable monitoring of the desired activities of the animals  26  as they feed or drink side by side at a feeding or watering trough  28 . 
     The computer  14  typically monitors one or more desired animal behaviors which can effect or be used to predict desired feeding, drinking, or other behaviors of animals, e.g. there are various factors that can be easily and fairly accurately monitored by the present invention. Some of the more important behaviors to be monitored include, for example, monitoring which animal feeds or drinks beside which other animal(s). This enables the bossy animals, which are disruptive to feeding of the other animals, to be quickly identified and removed at an early stage to minimize the disruption to other animals. Monitoring which animals feed first helps to identify the animal hierarchy and the eagerness of the monitored animal to feed. The time duration that each animal feeds or drinks provides an indication of the feed or water intake of the monitored animal. Monitoring which area of the trough that each animal frequently feeds at enables different mixes to be utilized for different animals to meet different nutritional requirements of the various animals being monitored and also facilitates experimentation with different feed mixes. Monitoring when a particular location of the trough becomes empty enables cross-checks to be performed as to the amount of feed consumed by the animals feeding at each monitored location of the trough. Monitoring deviations in the feeding activity of an animal, in comparison to the feeding activities of the other animals, allows alternative feed mixes to be tried with such animals. Monitoring any deviations in animals feeding activity, as compared with the normal feeding activities for that animal, enables a sick animal to be quickly identified, quarantined, and treated before any significant weight loss has occurred and also before any other animals may become similarly infected. 
     The measurements to be taken, according to the system and method of the present invention, generate an animal position location as well as a time stamp indicative of the total time that an animal is located at the feeding or drink trough  28 . It is important to note that a variety of assumptions are made, in mathematical equations employed by the present invention, to allow the measurements to be utilized to predict, within an acceptable range, the behaviors to be monitored. 
     For example, it is known that the feed intake rate (i.e. the consumption of feed per minute) dramatically increases when there is a perception of competition among the animals  26 . This perception is also hidden within raw data by means of calculating how many animals are at the feeding or drink trough  28  at the same time. Other information relevant to the feed intake rate is, for example, the distance between a specific animal being monitored and any adjacent neighbor(s) while feeding at the feeding or drink trough  28 . 
     The feed intake rate is also dependent upon the total elapsed time of the event (e.g. the time at which the animal was first seen at the feeding or drink trough  28  to the time the animal leaves the feeding or drink trough  28 ) versus the actual time the animal had its head located in the feeding or drink trough  28  for feed or drinking purposes. 
     Another important factor in determining the feed intake rate is the positional data obtained while an animal is feeding. For example, animals which frequently move when feeding tend to be browsers and generally are not actively consuming feed when wandering. Accordingly, such feeding time is to be discounted, via the present invention, by an appropriate factor discussed below in further detail. 
     It is to be appreciated that significant browsing by the animals  26  normally occurs only when the feeding or drink trough  28  is empty. Obviously, there can be no consumption of food or water when an animal is visiting an empty trough. The system and method should know, or at the very least be able to determine with a certain level of predictability, when the feeding or drink trough  28  is empty and discard or eliminate such data, or drastically discount the same. Nevertheless, animals  26  that browse an empty feeding or drink trough  28  frequently tend to have higher feed intake rates when the feed or water eventually becomes available. Accordingly, the feeding time of such animals, once the feed or water eventually becomes available, should be increased or augmented to accurately reflect the actual feed or water intake rate of such animal  26 . 
     The inventor has also appreciated that age is another element influencing the feed intake rate of animals  26 . That is, the older and more mature the animal, the larger the throat of the animal and therefore the faster that animal can consume feed or drink. It is to be appreciated that once an animal is substantially fully grown, this element influences the feed intake rate of animals  26  less in comparison to other fully grown animals  26 . 
     The society hierarchy also influences the feed intake rate of the animals. To exploit this feature, the feeding or drink trough  28  is typically designed to be slightly smaller than the required size such that not all of the animals  26  can feed or drink at the feeding or drink trough  28  at the same time. This insufficient feeding and/or drink space instills competitive feeding and drinking behavior in the animals. After a few days of monitoring the animals  26 , it can be readily determined which animals are pushed away by which other animals while feeding or drinking. It is assumed that the pushed away animals endure some stress which is not conducive to feed or drinking intake, but the system and method, of the present invention, can also be used to determine the severity of this insufficient feeding and/or drink space problem. 
     Inconsistent feeding habits also influence the feed intake rate of the animals. It is widely believed that some animals become acidotic and will, therefore, eat irregularly. By identifying such animals and by changing management and/or ration, the severity of such problems can be minimized or reduce. 
     Another element relating to the feed intake rate of an animal is the time at which the feeding or drink trough  28  empties. 
     The inventor believes that the more consistent each animal&#39;s diurnal and nocturnal feeding habits, the more accurate the system and method, according to the present invention, can predict the activities of the animals to be monitored. 
     The speed at which a new animal(s) adapts to new feeding or drinking environment, e.g. date and time when the animal first shows up in the confined area A or pen, also bears a relationship to the feed intake rate of that animal. 
     If it is desired to mark one of the animals to be removed, quarantined or somehow otherwise identified, a chalk powder ejector  33  (FIG.  3 )can be used in combination with the present invention. For example, each one of the plurality of antennas can be associated with a chalk powder ejector  33  so that when the desired animal is detected at the feeding or drinking trough  28 , a corresponding chalk powder ejector  33  can be activated to disperse an identifying chalk at a desired region of the animal to be identified, e.g. a neck or facial region. Once the animal has been identified, this facilitates readily quarantining, removing, or otherwise treating the marked animal. As the technology for activating the chalk powder ejector  33  would be readily apparent to those skilled in the art, a further detailed description concerning the same is not provided. 
     Turning now to FIG. 4, a description concerning a flow diagram, used to determine some desired characteristics to be monitored, will now be described. With reference to FIG. 4, it can be seen that, at step  50 , the latitude and the longitude positions of the feeding area or pen A are first imputed into the computer  14  of the system to be used to determine relevant daylight information from known data. Next, at step  52 , a variety of data and time measurements are next entered into the computer  14  of the system. For example, the current temperature and/or humidity, the current wind direction and/or wind velocity, the daily and/or weekly precipitation amounts, the current barometric pressure and a measurement indicative of the amount of sunlight, as well as other environmental information, are entered into the system. This information, in turn, can be utilized to alter the adjustment factor which is employed to either discount or augment the preliminarily determined feed or drink intake rate to thereby result in a fairly accurate prediction of the monitored animal behavior. 
     At step  54 , data relating to the feed are inputted, e.g. the type of feed, the composition or ingredients of the feed, the total weight of feed added to the feeding trough, the associated pen number or other identifying indicia and the time at which the feed was deposited in the pen, whether the feed has any additives, medicine, etc. The system is now ready for monitoring, at step  56 , to generate data comprising the location of each detected animal and a time stamp indicative of the total elapsed time of the monitored event, e.g. the total time that the animal was feeding at the feeding trough or drinking trough  28 . Feed truck  30  movement will facilitate calculation, by the system, of the amount of feed being deposited by the feeding truck  30  along each discrete section along the feed trough  28  (FIG.  5 ). This information can be utilized to more accurately predict the feed intake of each animal  26 . 
     In the event that an animal  26  is initially detected at the feeding or drink trough  28 , a time stamp for that animal is initiated by the system  10  which indicates the exact time that the animal arrived at the feeding or drink trough  28 . The system and method receive the returned unique identification signal from the transponder  12 , via the activated antenna  20  and convey this returned signal to the computer  14 , via the activated signal relay circuit  23  and the microcomputer  16 . It is to be appreciated that the system, according to the present invention, will typically generate about 1500 data points per day for each monitored animal  26 . This data will facilitate accurate monitoring of the desired activity or activities of the animal. 
     During the entire time that the animal  26  is present at the feeding or drink trough  28 , the system and method will monitor whether the animal&#39;s head is located within the feeding or drink trough  28 , at step  58 , actively feeding or drinking, e.g. the transponder  12  is detected by two, three or possibly four adjacent antennas  20 , or whether the animal&#39;s head is located reasonably close to but slightly spaced from the feeding or drink trough  28  (e.g. within about 36 inches or so and detected by only one antenna  20 ) and passively feeding or drinking or whether the animal&#39;s head is located sufficiently far from the feeding or drink trough  28  (e.g. located greater than about 36 inches away from the trough and thus not detected by any antenna  20 ). That is, the quantity of antennas  20  that receive a return signal from a transponder  12  can be readily used to determine whether or not the animal is feeding at a normal pace, e.g. the return transponder signal is only detected by one or possibly two antennae  20  versus when the return signal is detected by three or possibly four antennae  20  which suggests that the animal&#39;s head is located within the feeding or drinking trough  28  and aggressively feeding or drinking. 
     The system and method periodically check, every few seconds or so, to verify that the animal  26  is still sufficiently close to the feeding or drink trough  28 , e.g. within about 36 inches or so or has not wandered sufficiently away from the receiving antenna for a period of time of more than about one minute to about ten minutes, preferably not wandered away from the trough for more than a five minute period. In the event that the system or the method determines that the animal  26  is no longer located at the feeding or drink trough  28 , e.g. the animal  26  left for a period of time of about five minutes or more, an end time stamp is generated for that animal  26  by the computer  14 , at step  62 , which terminates the monitored event and enables the computer  14  to readily determine, at step  64 , the total elapsed time that the specific animal was eating or drinking. 
     At step  66 , the feed intensity, i.e. a ratio between the duration of time that the head of the animal  26  is located within or sufficiently adjacent the base of the feeding or drink trough  28  and presumed to be actively feeding or drinking to the time that the head of the animal  26  was located sufficiently away from the feeding or drink trough  28  but only passively feeding or drinking is also determined. This ratio, for a typical animal, is about 50% for a majority of animals and may be as high as 100% for very active eaters or drinkers and may be as low as 5% for passive eaters or drinkers. 
     Next, a step  68 , the amount of feed or water actually consumed by the animal  26 , during the total elapsed time of the monitored event, is calculated. Finally, at step  70 , the preliminarily calculated amount is then either augmented or discounted by multiplication with a suitable adjustment factor. The adjustment factor will either augment (increase) or discount (decrease) the calculated preliminary amount by a suitable adjustment factor to arrive at a more accurate prediction of the event being monitored. 
     According to the present invention, the factors which typically are utilized to augment a monitored event are: 
     It is a rainy day; 
     The temperature is cold; 
     The animal is detected browsing around an empty feeding trough; 
     The animal&#39;s head is detected by two or more antennae for at least 50 percent of the total feeding event; 
     This is the first feeding of the day; 
     The feeding event is occurring in a competitive environment; and 
     It has been at least four to five hours since the previous feeding event; 
     According to the present invention, the factors which typically are utilized to discount a monitored event are: 
     The feeding event is occurring in the afternoon; 
     The weather is warmer; 
     The weather is sunny; 
     The feeding event is occurring at dusk; 
     The feeding event is occurring in a non-competitive environment; and 
     This is the last feeding of the day. 
     It is to be appreciated that a variety of other factors, as would be apparent to those skilled in the art, can also be used to alter or modify the adjustment factor to facilitate a more accurate prediction of the animal behavior being monitored. 
     To explain the present invention in further detail, the following example is provided. or by way of explanation. 
     Assuming that there is a feeding trough  28  and the trough is 16 feet long such that the trough can be divided into 4 sections, i.e. the first section of the feeding trough comprises the first 4 feet, the second section of the feeding trough comprises the next 4 feet, the third section of the feeding trough comprises the next 4 feet and the fourth section of the feeding trough comprises the last 4 feet. In addition, assuming that 160 pounds of feed are equally distributed to the feeding trough  28 , there will be approximately 10 pounds of feed for every linear foot along the trough. If sixteen separate scales, each having a length of one foot, are sequentially placed along each linear foot section of the feeding trough  28 , it would be readily easy to calculate the actual feed rate for each animal  26  by dividing the amount of feed consumed by the duration of time for which the animal  26  was actually feeding. Accordingly, it is possible, via use of the present invention and suitable scales, to determine an initial feed rate for each animal with high accuracy. However, in most conventional animal raising applications, it is not cost effective and is too time consuming to physically determine the feed rate so that it is necessary to determine the feed rate for each animal in the field while actually consuming food. This can be done by a conventional iteration process. 
     
       
         
               
             
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 1 
               
             
             
               
                   
               
               
                 (Total Feed Available per section along the trough is 40 Lbs) 
               
             
          
           
               
                   
                 Minutes 
                 Feeding Rate 
                 Consumed 
               
               
                   
                   
               
             
          
           
               
                   
                 Section #1 
                   
                   
                   
                   
               
               
                   
                 Albert 
                 9 
                 0.75 
                 6.75 
                 lbs 
               
               
                   
                 Martha 
                 16 
                 0.5 
                 8 
                 lbs 
               
               
                   
                 Buttercup 
                 5 
                 0.8 
                 4 
                 lbs 
               
               
                   
                 Daisy 
                 17 
                 1.25 
                 21.25 
                 lbs 
               
               
                   
                   
                   
                 TOTAL 
                 40 
                 lbs 
               
               
                   
                 Section #2 
               
               
                   
                 Albert 
                 25 
                 0.75 
                 18.75 
                 lbs 
               
               
                   
                 Martha 
                 2 
                 0.5 
                 1 
                 lbs 
               
               
                   
                 Buttercup 
                 5 
                 0.8 
                 4 
                 lbs 
               
               
                   
                 Daisy 
                 13 
                 1.25 
                 16.25 
                 lbs 
               
               
                   
                   
                   
                 TOTAL 
                 40 
                 lbs 
               
               
                   
                 Section #3 
               
               
                   
                 Albert 
                 5 
                 0.75 
                 3.75 
                 lbs 
               
               
                   
                 i#iartha 
                 38 
                 0.5 
                 19 
                 lbs 
               
               
                   
                 Buttercup 
                 20 
                 0.8 
                 l6 
                 lbs 
               
               
                   
                 Daisy 
                 1 
                 1.25 
                 1.25 
                 lbs 
               
               
                   
                   
                   
                 TOTAL 
                 40 
                 lbs 
               
               
                   
                 Section #4 
               
               
                   
                 Albert 
                 4 
                 0.75 
                 3 
                 lbs 
               
               
                   
                 Martha 
                 20 
                 0.5 
                 10 
                 lbs 
               
               
                   
                 Buttercup 
                 15 
                 0.8 
                 12 
                 lbs 
               
               
                   
                 Daisy 
                 12 
                 1.25 
                 15 
                 lbs 
               
               
                   
                   
                   
                   
                 40 
                 lbs. 
               
               
                   
                   
               
             
          
         
       
     
     Based upon the above representative data, the time spent by each animal  26  at each feeding location of the feed trough  28  can be readily determined by the present invention. It is also easy to determine the amount of feed which is available at each location along the feed trough  28  prior to commencement of each feeding or drinking event. It is assumed that the feed intake rate will remain consistent and constant for each animal for a specific period of the day. Based on such assumptions and the known information, a conventional iteration of this data is undertaken to determine the feed rate for each animal. The iteration continues until all the equations “close” or “substantially close”. Once equations “close” or “substantially close”, the calculated feeding rate of each animal can then be multiplied by the total time spent by each animal and the consumption of feed or drink for each animal during the event, and this is shown in Table 2 below. 
     
       
         
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                   
                 TABLE 2 
               
               
                   
                   
               
               
                   
                 Feeding Rate 
                 Minutes Spent 
                 Daily Cons. 
               
               
                   
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 Albert 
                 0.75 
                 43 
                 32.25 
                 lbs 
               
               
                   
                 Martha 
                 0.5 
                 76 
                 38 
                 lbs 
               
               
                   
                 Buttercup 
                 0.8 
                 45 
                 36 
                 lbs 
               
               
                   
                 Daisy 
                 1.25 
                 43 
                 53.75 
                 lbs 
               
               
                   
                   
               
             
          
         
       
     
     Later in the day, the next time a feeding truck  30  passes by and again loads the feed or drinking trough  28  with additional feed or water (FIG.  5 ), a further calculation of the feed intake rate for each monitored animal can be again determined by the system. Generally, the second and any subsequent iteration process are less involved because the results of the previous iteration provides a better initial indication of the feed rate for each animal to use to determine the amount of feed or drink consumed by each animal. 
     The present invention seeks to obtain a 70%, and possibly 80% or 90%, accuracy in the ability to be able to predict a specific behavior of an animal being monitored, e.g. the animal&#39;s eating or drinking rate. With improved animal predictability, it is easier for farmers to select the best breed or genetic species of animal which will consume the least amount of feed and drink but will also convert such consumed feed and drink into body weight and thereby minimized the costs associated with fattening animals prior to slaughter. In addition, the present invention is useful in assisting farmers in determining which animals or types of animals have the slower metabolisms so they can readily convert the consumed feed in the body weight and thus will be less expensive to raise than other animals with higher metabolism rates that consume larger amounts feed while increasing their body weight at a much slower rate. 
     Another important aspect of the present invention is the ability to monitor the location of feed or watering trucks  30  (FIG. 5) which are supplying feeding or water to the troughs  28 . Each feed or watering truck can be installed with a suitable transponder  30  which sends a signal that is picked up by one of the antennas  20  in the mat  22  or a specifically designated truck antenna. By this arrangement, the stopping location of each feed or liquid truck can be readily determined and ensured that the proper feed or liquid is deposited in the proper feeding or drinking trough for consumption by the desired animals. It is to be appreciated that sometimes the feed or liquid is sometimes combined with a specific chemical, composition, medicine, additive, etc. to obtain a desired effect on the animals consuming the feed or liquid. By being able to monitor what feed or liquid is being deposited by which truck into which feeding or drinking trough, the present invention assures improved quality control of the feeding and drinking process and minimizes quality control problems which are inherently present in the prior art feeding and monitoring systems. 
     It is to be appreciated that the more antennas that pick up a transponder, the closer the transponder is located to the feeding trough. Accordingly, if two or more transponders pick up an antenna, it is a very good indication that the animal is actively feeding. Accordingly, the more antennas that pick up a transponder, the closer the animal is to the feeding trough and in all likelihood, the more aggressively that animal is feeding or drinking. This information can be used to augment the amount of feed or drink being consumed by the animal. 
     While the present invention has been described basically with respect to the feeding activities of animals, such as cattle, pigs, lambs, etc., it is to be appreciated that the system, according to the present invention, has a variety of other conceivable applications. For example, each bus of a bus line could be installed with a passive transponder  12  and a maintenance facility for the busses of the bus line, could be equipped with a plurality of antennas  20 , e.g. each parking space and/or vehicle maintenance location within the maintenance facility could have an antenna  20  located adjacent that parking space. By this arrangement, when a bus with a passive transponder  12  is located within the bus maintenance facility and at or adjacent one of the parking spaces equipped with an antenna  20 , the antenna  20  will transmit a signal to the passive transponder  12  and receive a return signal, as with the previous embodiment. The return signal is then communicated to the microprocessor  16  and computer  14  so that the bus line will instantaneously know the exact location where each one of the buses, situated within the parking and/or maintenance facility, is located and may use this information to determine when maintenance work for a bus has been completed, for example, e.g. when a bus is moved from a maintenance location to parking location. 
     Since certain changes may be made in the above described system and method, without departing from the spirit and scope of the invention herein involved, it is intended that all of the subject matter of the above description or shown in the accompanying drawings shall be interpreted merely as examples illustrating the inventive concept herein and shall not be construed as limiting the invention.