WO2018009063A1

WO2018009063A1 - A system for linking an identity of an animal that is at a determined position to information about that animal.

Info

Publication number: WO2018009063A1
Application number: PCT/NL2017/050445
Authority: WO
Inventors: Woltherus Karsijns; Jeroen Martin Van Dijk; Jan Anne Kuipers; Rudie Jan Hendrik LAMMERS
Original assignee: N.V. Nederlandsche Apparatenfabriek Nedap
Priority date: 2016-07-05
Filing date: 2017-07-04
Publication date: 2018-01-11
Also published as: NL2017104B1

Abstract

A system for linking an identity of an animal that is at a determined position to information about that animal, wherein the system comprises at least one tag which is configured to be worn by the animal, wherein the tag comprises an identification code associated with the animal and wherein the system further comprises position determining means for determining a position of the tag and a processor for, on the basis of the position of the tag determined with the position determining means, linking the determined position of the tag to the identification code of the tag, wherein the system further comprises in- and/or output means respectively for recording by means of a measurement and/or for delivering information about the animal when it is in the proximity of the in- and/or output means, wherein the system is further configured to use the identification code of the tag of the animal when the determined position of the tag according to predetermined criteria is in the proximity of the in- and/or output means to link information which is recorded by the in- and/or output means through a measurement on the animal to the identification code of the tag and/or to supply information which is associated with the identification code of the tag to the in- and/or output means for delivering this information.

Description

Title: A system for linking an identity of an animal that is at a determined position to information about that animal.

The invention relates to a system for linking an identity of an animal that is at a determined position to information about that animal, wherein the system comprises at least one tag which is configured to be worn by the animal, wherein the tag comprises an identification code associated with the animal and wherein the system further comprises position determining means for determining a position of the tag and a processor for, on the basis of the position of the tag determined with the position determining means, linking the determined position of the tag to the identification code of the tag. Such a system is known per se. In the known system, typically, use is made of a reading device to read out an identification code of the tag. To that end, the tag is typically provided with a resonant circuit which is brought into resonance by an electromagnetic interrogation field

transmitted by the reader. The tag then modulates the interrogation field with information about the identification code or generates an

electromagnetic response signal with information about the identification code which in both cases is detected by the reader to determine the identification code. Since in order for the tag to be read out the animal needs to be in the proximity of the reader, in this way, with a certain accuracy, the position of the animal is known as well. In this case, then, the position determining means are formed by the reader. In this manner, a determined position of the tag can be linked to the identification code of the tag. Once this link is known, the system may for instance be configured, with the aid of input means comprising a sensor, to perform measurements on the animal, these measurements then being attributed to, as belonging to, the identification code of the tag worn by the animal in question. A drawback of the known system is that the determined position of the tag is related to the position of the reader. In other words, if a position of the tag is determined, this means that the tag is in the proximity of the reader within a predetermined criterion. This entails the risk that the sensor which may be at a different position than the reader records information from an animal not relating to the identification code of the tag which is read out. The tag which is read out may, after all, be worn by a different animal than the animal that is in the proximity of the sensor. Such mix-up with regard to the identity of animals occurs regularly at the farm. For instance, think of an aisle where at an entrance to the aisle the tag of an animal entering the aisle is read out with the aid of a reader. The animal proceeds along the aisle, for instance in the direction of a milking robot. Thereupon, the tag of a next animal entering the aisle is read out. The sequential order of the animals in the aisle then corresponds to the order of the identification codes read out. It may then happen, however, that the order of the animals is changed round by one animal squeezing past another. When thereupon in a milking robot with the aid of a sensor measurements are carried out on one of the animals having changed places, the information obtained with the sensor is associated with an identification code of the wrong animal. Such problems can also occur at feeding troughs where different animals can present themselves. At these feeding troughs, likewise, readers are set up to read out the tags of the animals. The animals, however, will continue to move after the tags have been read out, so that, here too, animals may get mixed up, so that when at the feeding troughs sensors are set up for instance to monitor the feeding behavior of the animals, a monitored feeding behavior will be associated with a wrong animal. The object of the invention is to provide a solution to the above- mentioned problems.

The invention is accordingly characterized in that the system further comprises in- and/or output means respectively for recording by means of a measurement and/or for delivering information about the animal when it is in the proximity of the in- and/or output means, wherein the system is further configured to use the identification code of the tag of the animal when the determined position of the tag according to predetermined criteria is in the proximity of the in- and/or output means to link information which is recorded by the in- and/or output means through a measurement on the animal to the identification code of the tag and/or to supply information which is associated with the identification code of the tag to the in- and/or output means for delivering this information.

According to the invention, it is essential that the system is configured to determine the identification code of the tag when the determined position of the tag according to predetermined criteria is in the proximity of the in- and/or output means. This in contrast to when the identification code of the tag according to predetermined criteria is in the proximity of a reader. It is thus ensured that the in- and/or output means used link information which is recorded by the in- and/or output means through a measurement on the animal to the right identification code of the tag and/or supply information that is associated with the identification code of the tag to the right in- and/or output means for delivering this

information. If, therefore, the in- and/or output means comprise a sensor to measure a property of an animal, the certainty can be accomplished that this measured information relates to the animal wearing the tag whose identification code is read out. If, therefore, the in- and/or output means comprise a display to depict information of an animal, the certainty can be accomplished that this depicted information relates to the animal wearing the tag whose identification code is read out.

In particular, it holds that the system comprises a plurality of beacons which each comprise a transmitter for transmitting a transmitter signal, wherein the tag comprises a first receiver for receiving the transmitter signals and wherein the position determining means are configured for determining the position of the tag on the basis of transmitter signals received with the first receiver, and wherein the system furthermore comprises information about the position of the in- and/or output means to determine whether the tag of the animal according to the predetermined criteria is in the proximity of the in- and/or output means.

With the aid of the plurality of beacons, in a known manner, the position of the tag worn by an animal can be determined. In this manner, it can also be very accurately determined whether the tag according to a predetermined criterion is in the proximity of the in- and/or output means. It is also possible, however, that the position determining means are included in the tag, while the system furthermore comprises information about the position of the in- and/or output means to determine whether the tag of the animal according to the predetermined criteria is in the proximity of the in- and/or output means. The position determining means in the tag can then comprise, for example, a GPS receiver.

Also, the position determining means may be configured to cooperate with the plurality of beacons. In this last-mentioned case, it holds in particular that the tag comprises a transmitter to transmit information about the received signals, wherein the system further comprises a second receiver for receiving the information and wherein the position determining means are configured to determine the position of the tag on the ground of information received with the second receiver, about signals received by the first receiver. Furthermore, it holds here, in particular, that the beacons are fixedly set up.

Furthermore, it holds in particular that the system comprises at least one stand for an animal, wherein at least one of the in- and/or output means are set up at at least one of the stands of the animal.

It can hold here that the at least one stand of the animal is at a position where an animal is milked with a milking robot. According to a particular embodiment, it holds that the system comprises an aisle framed by fences and a controllable access gate which provides access to the aisle, wherein the at least one stand can be reached by the animal via the aisle, wherein in particular the aisle provides access to a plurality of stands where an animal may be milked by a milking robot and which are each provided with at least one of the in- and output means.

The system is very widely applicable. Thus, it may hold, in particular, that the system comprises an aisle framed by fences and a controllable access gate which provides access to the aisle, wherein the at least one stand can be reached by the animal via the aisle, wherein in particular the aisle provides access to a plurality of stands whereby an animal can be milked by a milking robot and which are each provided with at least one of the in- and output means.

Also, it may hold, in particular, that at least one of the in- and output means include a display, with the system being configured for depicting information of the animal that is near the in- and output means.

The invention will presently be further elucidated on the basis of the drawings, in which:

Figure 1 shows a possible embodiment of a system according to the invention;

Figure 2 A shows a possible embodiment of a tag of the system according to the invention;

Figure 2B shows a first alternative embodiment of a tag of the system of Figure 1 according to the invention; and

Figure 2C shows a second alternative embodiment of a tag of the system of Figure 1 according to the invention.

In Figure 1 with reference number 1 a system according to the invention is designated. The system comprises at least one tag, in this example a plurality of tags 2.i (i = 1,2,3, ...n), each tag 2.i being worn by an associated animal 4.i (i =1,2,3, ...n). A possible embodiment of the tag 2.i is shown in Figure 2 A. The tag 2.i is provided with an identification code which in this example is stored in a memory 6. The tag 2.i furthermore comprises a resonant circuit 8 which in a manner known per se can be read out with the aid of a reader, such as an RFID reader. The reader generates an electromagnetic interrogation field. In response to this interrogation field, the resonant circuit 8 transmits a signal comprising information about the identification code stored in the memory 6. The reader can then function as an absorption system or as a transmission system known per se. An example of such a reader 10 is schematically shown in Figure 1.

The system comprises a plurality of beacons 12.j (j=l,2,3) which in this example are set up at a fixed position. Each beacon comprises a transmitter 14 for transmitting a unique transmitter signal. The tag 2.i comprises a first receiver 16 for receiving the transmitter signals

transmitted by the respective beacons 12.1-12.3. The signals transmitted by the beacons 12. j are unique in the sense that, upon receipt by the receiver 16, they can be received distinguishably from each other. This can be realized, for instance, in that each beacon 12. j transmits at a specific frequency related to this beacon in question. In this example, the tag 2.i comprises position determining means 18 which process in combination the transmitted signals from the respective beacons 12. j received with the aid of the receiver 16 for determining the position of the tag 2.i relative to the beacons. Since the position of the beacons 12.j is known as such, the position of the tag 2.i is thus known as well. The position determining means 18 can, for instance on the basis of the amplitude of the respectively received signals from the beacons, assess the distance to each of the beacons. This makes it possible by cross bearing techniques known per se to determine the position of the tag relative to the beacons. The position determining means 18 in this example supply information about the determined position to a transmitter 20 of the tag. The transmitter 20 transmits information about the determined position associated with an identification code from the memory 6, so that this can be received with the aid of a second receiver 22. In this example, the transmitter 20 effectively forms a processor for, on the basis of the position of the tag determined with the position determining means 18, linking the determined position of the tag to the identification code of the tag stored in the memory 6.

The information about the position of the tags that is received with the aid of the second receiver 22 is supplied to a central control unit 24 in this example.

In this example, the system furthermore comprises an aisle 28 framed by fences 26 and a controllable access gate 30 which gives access to the aisle. In this example, the aisle leads to three stands 32. k (k=l,2,3) for an animal. Each stand 32. k in this example is provided with a milking robot 34. k. Furthermore, at each stand 32. k, a sensor 36. k is arranged which is configured to carry out particular measurements on the animal. In this connection, think of, e.g., a temperature sensor. Furthermore, at each stand 32. k a display 38. k is arranged. A sensor 36. k in this disclosure is also referred to as an input means, while a display 38. k in this disclosure is also referred to as an output means.

The system described up to this point works as follows. When an animal is in the proximity of the reader 10, the tag of the animal will be read out by the reader. It is then also concluded that the animal is in the proximity of the aisle 28. The gate 30 is then opened by the reader 10 in an automatic manner. The animals can then move into the aisle. In this example, the animal 4.1 has meanwhile arrived in stand 32.1. With the aid of the tag 2.1, with respect to the beacons 12.j, the position of the tag 2.1 and hence the position of the animal 4.1 is determined. This position, at least, information thereof, is transmitted with the aid of the transmitter 20, together with the identification code which is stored in the memory 6 of the tag 2.1. This information is received by the second receiver 22 which passes the information about the position of the animal on to the central control unit 24. The central control unit 24 knows in this manner where the animal 2.1 is located. In this example, it holds that in the control unit, also information is stored about the position of the sensors 36. k and the displays 38. k. As the central control unit 24 also comprises information about the position of the tag 2.1 of the animal 4.1, the control unit can determine to what extent the tag 2.1 is in the proximity of the sensor 36.1 according to a predetermined criterion. This criterion can for instance be that the distance between the tag 2.1 and the sensor 36.1 is less than 1.5 meters. The sensor 36.1 in this example carries out measurements on the animal 4.1, which are supplied via a signal c to the control unit 24. In this way, the control unit 24 is able to determine that the measuring signals which have been received from the sensor 36.1 belong to the animal 4.1. Because the instantaneous position of the animal relative to the sensor 36.1 can be determined, it is thus accomplished that there is certainty that the measuring results from the sensor 36.1 relate to the animal 4.1. Also the milking robots 34. k may be provided with sensors such as milk meters which work analogously within the system as regards the linking of the measuring results to an

identification code of a tag as has been discussed for the sensors 36.1.

In this example the system is also configured such that the control unit 24 supplies information about the animal 4.1 to the display 38.1 via signals s. In this example also, the control unit 24 can determine whether the animal 4.1 with the tag 2.1 is at a predetermined maximum distance relative to the display 38.1. If this is the case, the control unit 24 can supply information about the animal, such as for example the identity of the animal, to the display 38.1. A user who reads out the display 38.1 then always knows that the information he is reading on the display 38.1 relates to the animal 4.1 wearing the tag 2.1.

Entirely analogously, for example, the animal 4.5 may at some point be in the proximity of the display 38.3. When the distance between the tag worn by this animal and the display 38.3 is less than, for example, 1.75 meters, this can be determined by the control unit 24. The control unit 24 can then depict information about the respective animal on the display 38.3. Entirely analogously, it holds that when, for example, the animal 4.5 is at a distance from the sensor 36.2 that is less than 1.5 meters, the control unit 24 will link measuring signals that are received from the sensor 36.2 to the identity of the animal 4.5. Also when the sequential order of the animals in the aisle has become different than the order in which the animals entered the aisle via the access gate, a measuring result on an animal will always be linked to the right animal. Also, on a display, always information will be depicted that relates to an animal that is in the proximity of the respective display. In this example, it holds that also at other stands 32. k, in- and/or output means 34. k, 36. k, 38. k such as a sensor and/or a display may be set up for recording and/or delivering information relating to the animal. Thus, in this example, the system further comprises automatic feeders 40.1 (1=1,2). If the animal 4.2 is at a stand 32.4 adjacent the automatic feeder 40.1, this can be determined by the central control unit 24 again with the aid of the position determination of the animal and the known location of the automatic feeder 40.1. The central control unit 24 can then, for example, control the automatic feeder through a signal s to dispense feed to the animal. With the aid of a sensor 36.4 it can be measured how much feed the animal eats up. The system can again determine that the animal is within a predetermined distance from the sensor 36.4. The information measured with the aid of the sensor 36.4 can then, via a signal c, be supplied to the control unit 24, the control unit then associating this information with the identification code stored in the tag 2.2 of the animal 4.2. When the tag 2.3 of the animal 4.3 is within a predetermined distance from the sensor 36.5, the control unit 24 can also store the information obtained with the aid of this sensor, in association with the identification code included in the tag 2.3 of the animal 4.3. In addition to the automatic feeders 40.1 and 40.2 being each respectively provided with a stand 32.4, 32.5, the system, furthermore, may additionally include a stand for an animal in other places. Thus, the system may additionally include a stand 32.6 where likewise in- and output means 36.6, 38.6 may be set up. When a tag of the animal according to predetermined criteria is near the in- and output means 36.6, 38.6, again, with the aid of a sensor 36.6 information of the animal can be determined which is supplied to the control unit 24 so that the control unit can process this information in association with the animal. Also, it is then possible with the aid of the control unit 24 to depict information about the relevant animal on the display 38.6.

In this example, of course, other sensors can also be used. Think of, e.g., a milk meter for measuring the amount of milk the animal produces when milked, a temperature sensor for measuring a temperature of the milk of the animal being milked, a conductivity sensor for measuring the conductivity of the milk of the animal being milked. These sensors could hence be arranged in the milking robots. As the position of the animal relative to these sensors can be determined, it is again ensured that information that is obtained with the aid of these sensors originates from the animal that, within a predetermined criterion, is in the proximity of the sensors. Furthermore, the system may be configured to depict information on a display that has been obtained with one of the sensors. Thus, for example, information about the animal that has been obtained with the aid of a sensor 36.1 can be depicted on the display 38.1. Also, in the proximity of, for example, the feeding station 40.1, a display 38.4 may be set up to depict information of the animal 4.2 if a distance between the tag 2.2 of the animal 4.2 and the display 38.4 meets predetermined criteria. Entirely analogously, a similar thing applies to the display 38.5 when the animal is in the proximity of this display.

In the example given above, each tag 2.i includes means to determine its own position relative to the beacons. It is also possible, however, that this is done elsewhere. An example of this is discussed with reference to Figure 2B. In Figure 2B, components corresponding to Figure 2A are provided with the same reference numerals. In this example, it holds that the signals received by the first receiver 16 of the tag are supplied to the transmitter 20. These signals (or information thereof) are then relayed and received with the aid of the second receiver 22. The control unit 24 is then configured to process these signals in combination in order to determine the position of the tag 2.i relative to the beacons 12. j. This, too, may be done on the basis of an amplitude of the received signals concerned. Thus, it is also possible that the transmitter 20 only sends the receiver 22 amplitude information combined with information about which beacon a respective amplitude belongs to. In this manner, the control unit 24 can then determine the position of the tag 2.i relative to the beacons.

In Figure 2C an alternative embodiment is shown of a tag 2.i. In the variant according to Figure 2C, the beacons 12.j can be omitted. Also, the first receiver 16 can be omitted. In this example, the tag 2.i includes position determining means 18 in the form of a GPS receiver. The position of the tag 2.i determined with the aid of the GPS receiver is passed on to the transmitter 20. The transmitter 20 transmits this information associated with the identification code which is stored in the memory 6. The receiver 22 receives this information and supplies it to the control unit 24. Because the control unit 24 thus has position information associated with the

identification code of each tag 2.i again, the control unit, entirely

analogously to what has been described above, can utilize the identification code of the tag, when the determined position of the tag according to predetermined criteria is in the proximity of one of the in- and/or output means, to link information that is recorded by the in- and/or output means through a measurement on the animal to the identification code of the tag and/or to supply information that is associated with the identification code of the tag to the in- and/or output means for delivering this information. In Figure 2D, an alternative embodiment is shown of a tag 2.i. In the variant according to Figure 2D the beacons 12. j can again be omitted. Also the first receiver 16 in the tag can be omitted. In this example, the tag 2.i includes a transmitter 20 for transmitting a reference signal. The

transmitter 20 transmits the reference signal together with the

identification code which is stored in the memory 6. In this example, the system as shown in Figure 1 includes a third receiver 22' which is

schematically represented and is at a different position than the second receiver 22. The second receiver 22 and the third receiver 22' each receive the information that has been transmitted by the transmitter 20 and supply this information to the control unit 24. In this example, the control unit 24 comprises position determining means to determine the position of the tag in a known manner on the basis of the information received with the second and third receivers 22 and 22' (this can be carried out, for instance, on the basis of a cross determination method whereby amplitudes and/or phases of the signals received with the receivers 22, 22' are compared with each other to determine the position of the tag. Also, it is possible to omit the third receiver 22' and to implement the second receiver 22 as a phased-array receiver. The control unit may then be configured to determine the distance from the second receiver 22 to the tag on the basis of the amplitude of the received signal and to determine the direction (azimuth) relative to the second receiver 22 on the basis of the phase information obtained with the phased-array receiver. On the basis of the measured direction (azimuth) and the measured distance, the position of the tag is then known. Also, with the aid of the transmitter 20 signals may be transmitted that comprise information about the time of transmission. To this end, the transmitter 20 includes, for example, an accurate digital clock. The signals coming from the transmitter 20 and received with the second receiver are then supplied to the control unit again. The control unit likewise includes an accurate digital clock. By comparing the time of transmission with the time of reception using the control unit, again the distance from the tag to the second receiver 22 can be determined. This, then, is an alternative to determining the distance on the basis of the amplitude information. Together with the information about the direction, the position of the tag is then known again. Because in the example of Figure 2D the control unit 24 then has position information associated with the identification code of each tag 2.i again, the control unit, entirely analogously to what has been described above, can use the identification code of the tag, when the determined position of the tag according to predetermined criteria is in the proximity of one of the in- and/or output means, to link information recorded by the in- and/or output means through a measurement on the animal to the identification code of the tag and/or to supply information associated with the identification code of the tag to the in- and/or output means for delivering this information.

In this example, the system includes milking robots. It will be clear that the system, instead of or in addition to the milking robots, may also include other milking machines such as a milking plant which is for instance used at an operator's pit. Also, the in- and/or output unit may be provided with a feed doser to dose out a predetermined amount of feed to an animal whose position has been established to be in the stand.

Such variants are each understood to fall within the scope of the invention.

Other ways known per se of determining the position of the animal relative to the in- and/or output means also fall within the framework of the invention. The system is therefore preferably configured to determine the position of the animal at any position of an area in which the in- and output means are arranged. This in contrast to known systems where the position of an animal can be determined only when it is in the proximity of a reader for reading out a tag. In particular, however, it holds that the position determining means of the system do not include means to read out the identification code of the tag in order for these means themselves to determine therewith whether a tag is in the proximity of the reader and hence of the in- and output means. The in- and output means do not include position determining means to determine the position of the animal relative to the in- and/or output means. The position of a tag can, independently of where the animal is, be determined relative to in- and output means.

Claims

1. A system for linking an identity of an animal that is at a determined position to information about that animal, wherein the system comprises at least one tag which is configured to be worn by the animal, wherein the tag comprises an identification code associated with the animal and wherein the system further comprises position determining means for determining a position of the tag and a processor for, on the basis of the position of the tag determined with the position determining means, linking the determined position of the tag to the identification code of the tag, characterized in that the system further comprises in- and/or output means respectively for recording by means of a measurement and/or for delivering information about the animal when it is in the proximity of the in- and/or output means, wherein the system is further configured to use the identification code of the tag of the animal when the determined position of the tag according to predetermined criteria is in the proximity of the in- and/or output means to link information which is recorded by the in- and/or output means through a measurement on the animal to the identification code of the tag and/or to supply information which is associated with the identification code of the tag to the in- and/or output means for delivering this information.

2. The system according to claim 1, characterized in that the system comprises a plurality of beacons which each comprise a transmitter for transmitting a transmitter signal, wherein the tag comprises a first receiver for receiving the transmitter signals and wherein the position determining means are configured for determining the position of the tag on the basis of transmitter signals received with the first receiver and wherein the system furthermore comprises information about the position of the in- and/or output means and is configured to determine whether the tag of the animal according to the predetermined criteria is in the proximity of the in- and/or output means; and/or that the tag comprises position determining means such as a GPS receiver and a transmitter to transmit the position of the tag determined with the position determining means and wherein the system furthermore comprises a receiver to receive the signals transmitted by the transmitter and wherein the system is provided with information about the position of the in- and/or output means and is configured to determine, on the basis of the received signals, whether the tag of the animal according to the predetermined criteria is in the proximity of the in- and/or output means; and/or that the tag comprises a transmitter to transmit a signal and wherein the system furthermore comprises at least one receiver for receiving the signal transmitted by the tag, wherein the system comprises position determining means to determine the position of the tag on the basis of the signal received with the at least one receiver and wherein the system comprises information about the position of the in- and/or output means and is configured to determine on the basis of the received signals whether the tag of the animal according to the predetermined criteria is in the proximity of the in- and/or output means.

3. The system according to any one of the preceding claims, characterized in that the position determining means are included in the tag and wherein the system furthermore comprises information about the position of the in- and/or output means to determine whether the tag of the animal according to the predetermined criteria is in the proximity of the in- and/or output means.

4. The system according to claim 2, characterized in that the tag comprises a transmitter to transmit information about the received signals, wherein the system further comprises a second receiver for receiving the information and wherein the position determining means are configured to determine the position of the tag on the ground of information received with the second receiver about signals received by the first receiver.

5. The system according to any one of claims 2 or 4, characterized in that the beacons are fixedly set up.

6. The system according to any one of the preceding claims, characterized in that the system comprises at least one stand for an animal, with at least one of the in- and/or output means being set up at at least one of the stands of the animal.

7. The system according to any one of the preceding claims, characterized in that the at least one stand of the animal is at a position where an animal is milked with a milking machine such as a milking robot or a milking plant which is for instance used at an operator's pit.

8. The system according to claim 6 or 7, characterized in that the system comprises an aisle framed by fences and a controllable access gate which provides access to the aisle, wherein the at least one stand can be reached by the animal via the aisle, while in particular the aisle provides access to a plurality of stands where an animal can be milked by a milking robot and which are each provided with at least one of the in- and output means.

9. The system according to any one of the preceding claims, characterized in that the system comprises a plurality of stands which are each provided with at least one of the in- and output means.

10. The system according to any one of the preceding claims, characterized in that the system comprises an aisle framed by fences and a controllable access gate which provides access to the aisle, wherein the at least one stand can be reached by the animal via the aisle, while in particular the aisle provides access to a plurality of stands where an animal can be milked by a milking robot and which are each provided with at least one of the in- and output means.

11. The system according to any one of the preceding claims, characterized in that at least one of the in- and output means comprise a display, with the system being configured for depicting information of the animal that is near the in- and output means.

12. The system according to claims 6 and 11, characterized in that the system is configured to depict information on the display of an animal that is at a stand near where the display is set up.

13. The system according to claims 7 and 11, characterized in that the system is configured to depict information of the animal that is being milked at the stand.

14. The system according to claims 10 and 12 or according to claims 10 and 13, characterized in that the system is configured to depict information on the display that has been obtained with at least one of the sensors.

15. The system according to claim 6, characterized in that the system comprises at least one automatic feeder which is set up at one of the stands.

16. The system according to claim 15, characterized in that the in- and output unit comprises a feed sensor to measure how much feed an animal whose position has been determined to be at the stand eats at the feeding unit and/or that the in- and output unit comprises a feed doser to dose out a predetermined amount of feed to an animal whose position has been determined to be at the stand.

17. The system according to any one of the preceding claims 15 or 16, characterized in that the in- and output unit comprises at least one display which is set up at the feeding unit, the system being configured to depict information on the display of the animal whose position has been

determined to be at the stand of the automatic feeder.

18. The system according to claims 16 and 17, characterized in that the information depicted on the display has been obtained with the feed sensor.

19. The system according to any one of the preceding claims, characterized in that the system is configured to determine the position of the animal at any position of an area in which the in- and/or output means are included.

20. The system according to any one of the preceding claims, characterized in that the in- and output means do not comprise position determining means to determine the position of the animal relative to the in- and/or output means and/or that the position determining means of the system do not comprise means to read out the identification code of the tag.

21. The system according to any one of the preceding claims, characterized in that the in- and/or output means and the tag are mutually discrete and are not mechanically connected with each other and/or that the in- and/or output means on the one hand and the tag on the other hand are received in mutually different housings.

22. The system according to any one of the preceding claims, characterized in that the system furthermore comprises information about the position of the in- and/or output means and is configured to determine whether the tag of the animal according to the predetermined criteria is in the proximity of the in- and/or output means.

23. The system according to any one of the preceding claims, characterized in that the system furthermore comprises information about the position of the in- and/or output means and is configured to determine whether the tag of the animal according to the predetermined criteria is or is not in the proximity of the in- and/or output means.