WO2007015226A2 - Procede et dispositif pour detecter les caracteristiques du lait pendant la traite - Google Patents

Procede et dispositif pour detecter les caracteristiques du lait pendant la traite Download PDF

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Publication number
WO2007015226A2
WO2007015226A2 PCT/IL2005/000817 IL2005000817W WO2007015226A2 WO 2007015226 A2 WO2007015226 A2 WO 2007015226A2 IL 2005000817 W IL2005000817 W IL 2005000817W WO 2007015226 A2 WO2007015226 A2 WO 2007015226A2
Authority
WO
WIPO (PCT)
Prior art keywords
milk
milking
udder
animal
measurements
Prior art date
Application number
PCT/IL2005/000817
Other languages
English (en)
Other versions
WO2007015226A3 (fr
Inventor
Eyal Brayer
Original Assignee
Scr Engineers Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scr Engineers Ltd. filed Critical Scr Engineers Ltd.
Priority to PCT/IL2005/000817 priority Critical patent/WO2007015226A2/fr
Priority to DE112005003651T priority patent/DE112005003651T5/de
Priority to NZ566064A priority patent/NZ566064A/en
Priority to GB0803485A priority patent/GB2443141A/en
Publication of WO2007015226A2 publication Critical patent/WO2007015226A2/fr
Publication of WO2007015226A3 publication Critical patent/WO2007015226A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/007—Monitoring milking processes; Control or regulation of milking machines
    • A01J5/0075—Monitoring milking processes; Control or regulation of milking machines with a specially adapted stimulation of the teats
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J3/00—Milking with catheters
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/007—Monitoring milking processes; Control or regulation of milking machines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/007—Monitoring milking processes; Control or regulation of milking machines
    • A01J5/01—Milkmeters; Milk flow sensing devices
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/013—On-site detection of mastitis in milk
    • A01J5/0133—On-site detection of mastitis in milk by using electricity, e.g. conductivity or capacitance
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/013—On-site detection of mastitis in milk
    • A01J5/0136—On-site detection of mastitis in milk by using milk flow characteristics, e.g. differences between udder quarters or differences with previous milking runs
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/013—On-site detection of mastitis in milk
    • A01J5/0137—On-site detection of mastitis in milk by using sound, e.g. ultrasonic detection
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/04—Milking machines or devices with pneumatic manipulation of teats

Definitions

  • the present invention relates generally to a method and apparatus for an early detection of Mastitis in dairy animals involved in changes of the milk and milk-flow characteristics.
  • Mastitis udder inflammation
  • dairy-farmers worldwide both in loosing of milk production as well as in losses due to high somatic cell count in the milk, which reduces the milk quality.
  • Mastitis is a very common disease in dairy animals, particularly in cows.
  • Mastitis involves changes of milk characteristics, such as color, transparency, electrical conductivity, amount of milk, existence of flakes and other changes.
  • milk characteristics such as color, transparency, electrical conductivity, amount of milk, existence of flakes and other changes.
  • Mastitis usually infects only one of the teats (referred to as quarters in cows) and men may infect other teats.
  • Mastitis leads to marketing of poor quality milk, loss of production and in severe cases, permanent damage to the udder or even death of the animal. Therefore, early detection of Mastitis is a key for successful treatment and high milk quality. Farmer organizations, scientists and commercial firms invest significant resources to reduce / cure this problem.
  • the van der Berg patent discloses a method and device for automatically milking a dairy animal, in particular a cow.
  • the method is based on milking each teat separately without the use of a milking claw, thus anticipating the flow rate for each quarter separately.
  • the method comprises the steps of activating the teat cup for milking the teat, measuring a milking parameter during the milking of the teat for obtaining a value of the milking parameter, and deactivating the teat cup when a deactivation threshold has been reached, The deactivation threshold is determined at least partially with the aid of the value of the milking parameter.
  • the first Takahashi patent provides a Mastitis Diagnosing Apparatus.
  • the apparatus comprises a Mastitis progression data memory for previously recording data on the corresponding relationship between the states of progression of Mastitis.
  • the apparatus further comprises a photo detector for detecting the trace light intensity chemically emitted in the milk.
  • An extractor / converter diagnoses the state of progression of Mastitis corresponding to the light intensity with reference to the Mastitis progression data memory based on the detected trace light intensity.
  • the Stephen patent discloses methods and apparatus for measuring electrical conductivity.
  • the methods are applied for measuring electrical conductivity particularly, but not solely, for use in detecting Mastitis in individual quarters of a cow's udder.
  • the apparatus employs the cyclical charge and discharge of a capacitor through liquid in a conductivity cell. Based on the potential applied to the capacitor, the charge cycle reverses and a reading of a high reference potential and a low reference potential indicates variations in cycle frequency and the electrical conductivity of the cell.
  • the second Takahashi patent discloses an examination apparatus for milk drawn from each quarter mamma of a milk cow.
  • the electric conductivity of the milk is measured independently by means of electrodes equipped in each trap associated with a quarter.
  • the difference in value among each quarter mamma is obtained by performing a subtraction between the minimum conductivity selected out among these traps and the other conductivity values.
  • the differential value is compared with predetermined reference values. If the output is higher than an upper limit value, the milk is indicated as abnormal. A warning is given by- sounding a buzzer.
  • the Massie patent provides a Mastitis detector including a conductivity cell through which milk may be passed.
  • the conductivity cell comprises a generally spherical housing having diametrically opposed inlet and outlet ports with a tubular member supporting two electrodes for making conductivity measurements.
  • the Rysanek patent introduces an apparatus for diagnosing milk secretion disorders in animals, such as cows.
  • the apparatus is based upon an electric detection of deviations from the properties of a standard milk secretion, and comprises a holder carrying a diagnostic dish divided by partition walls into a number of diagnostic units corresponding to the number of teats of the animal.
  • the diagnostic units are each provided with a measuring probe exposed to the mouths of scavenging nozzles and with a circuit for evaluating the milk quality as by its electrical conductivity.
  • the outlet of said circuit is connected to the- inlet of a display indicating, for example, when the quality of the milk in each diagnostic unit exceeds a predetermined value.
  • Subclinical Mastitis is defined as having a high level of somatic cell count in the milk, wherein no other clinical signs are detected.
  • detection by identification of the rising of electrical conductivity in the milk is known, as there is known statistical correlation between change in milk conductivity and Mastitis.
  • One family of products includes systems that monitor the electrical conductivity of the aggregated milk (from all teats) for each animal during milking and store it in a database. In each milking the aggregate milk conductivity is compared to the average of previous milkings, wherein an alert is issued if a significant change is monitored.
  • conductivity sensors are based on metal electrodes and are hard to keep stable, since build up of minerals, for example, changes the conductivity measurements considerably.
  • conductivity value can change significantly due to factors that are not related to Mastitis. For example, the milk of a perfectly healthy animal will show a very different conductivity level if the animal's food is saltier. Such changes will no doubt influence all the teats and provide an alarm, although no real sign of an illness is detected.
  • this method requires the usage of a herd management system that includes automatic identification of animals and parlor network to enable the storage, and analysis of the data of each animal.
  • a different family of products that tries to overcome some of the limitations of the first method is based on measuring the conductivity of each quarter before the milk is blended.
  • the solution is based on providing a sensor for each quarter, which is usually located in the milk claw in a conventional milking system or in the milk tube of each quarter' in systems utilizing quarter milking (e.g. Automatic Milking Systems (AMS), robots, etc.).
  • AMS Automatic Milking Systems
  • such a method involves the following limitations: Firstly, the milking claw is operated in an unfriendly environment for electrical equipment. The milking claw is subjected to mechanical impacts along with high moisture, and the difficulty of connecting electrical cable to the claw makes it difficult to produce a reliable product. Secondly, calibrating all four sensors to the same scale is a complicated procedure.
  • AMS Automatic Milking System
  • quarter milking is a relatively new method, wherein the vast majority of animals in the world (currently estimated at more then 99.8%) are milked with conventional claw systems.
  • the present invention discloses an improved and efficient method enabling an early detection of Mastitis using a common sensor.
  • the proposed method measuring milk and milk flow characteristics during milking from only a first half of the udder by temporarily stopping: the milk flow from a second half of the udder and then repeating the measuring process for the second half. Following this measuring process, measurements from the two halves of udder are compared in order to detect deviations in milk characteristics and flow rate within the udder.
  • This method obtains an accurate and practical measurement of the milk and milk characteristics, while providing a simple installation method and achieving a high performance level insensitive to calibration and sensitivity aspects of the sensor.
  • a method and apparatus for detecting deviations in milk and milk-flow characteristics during milking of an animal having at least two teats using a milking cluster operating with a pulsation device which applies pulsation during the milking comprises the steps of: measuring the milk and milk-flow characteristics of milk flowing from the milking cluster to a milk line during the milking; initially momentarily interrupting the pulsation applied to a second half of the animal's udder causing partial interruption of the milking, wherein the milking continues from a first half of the animal's udder; measuring the milk and milk-flow characteristics from the first half of the animal ' s udder using at least one sensor during the initial momentarily interrupting step; subsequently momentarily interrupting the pulsation applied to the first half of the animal's udder causing partial interruption of the milking, wherein the milking continues from the second half of the animal's udder; measuring the milk and milk-flow characteristics from the second half of
  • the method further comprises the step of alternately momentarily interrupting the milking for conducting an additional round of measurements to provide further accuracy.
  • the method further comprises the step of displaying the measurements from the first half and the second half of the animal's udder in order to enable talcing immediate actions when required.
  • the method further comprises the step of automatically stopping the milking in case the measurements from the first half and the second half of the animal's udder differ from one another by more than a pre-calibrated threshold.
  • the step of automatically stopping the milking is carried out by a detacher.
  • the method further comprises the step of issuing an alert in case the measurements from the first half and the second half of the animal's udder differ from one another by more than a pre-calibrated threshold.
  • the method further comprises the step of issuing an alert for warning against over-milking.
  • the method further comprises the step of storing the measurements from the first half and the second half of the animal's udder in a database in association with the first half and second half of the animal's udder for comparison with measurements received from previous milkings and other animals.
  • the milk characteristics are from the group of: electrical conductivity, color, absorption of electromagnetic radiation, reflection of electromagnetic radiation, electromagnetic spectrum analysis, velocity of ultrasonic wave in the milk, response to chemicals or reagents, viscosity, and concentration of different substances in the milk.
  • the milk-flow characteristics are from the group of: momentary flow rate, average flow rate, accumulated yield, and milk velocity.
  • the interrupting step by applying the first set and the second set of pulsations is carried out in different stages of the milking.
  • data is transferred via a wireless communication.
  • the method further comprises the step of automatically sampling only a half of the animal's udder for receiving off-line measurement of the milk characteristics.
  • An advantage of the present invention involves a method and apparatus providing a simple instillation, obtaining a qualitative measurement of milk and milk-flow characteristics and achieving a high performance level insensitive to changes in sensor calibration and sensitivity or to changes that affect the milk from all teats such as conductivity changes due to changes in the animal's food.
  • Fig. 1 is a block diagram of an apparatus for detection of changes in milk characteristics, constructed and operated in accordance with the principles of the preferred embodiment of the present invention
  • Fig. 2 is a graphical illustration of electrical pulses generated by proposed control unit when activating the pulsator during the milking procedure, in accordance with the preferred embodiment of the present invention.
  • the present invention discloses an innovative method and apparatus enabling an early detection of Mastitis or other abnormalities involved in change of the milk and milk-flow characteristics during milking.
  • the proposed method according to the preferred embodiment detects deviations in milk or milk flow characteristics during milking from an animal having at least two teats using a milking cluster.
  • the milking cluster is provided to operate with a two-channel • pulsation device known in the art, usually referred to as a "2 by 2 pulsator".
  • the two-channel pulsator comprises two solenoid vacuum valves that generate vacuum pulses to enable milking.
  • At least one common sensor is further provided for measuring the milk or milk-flow characteristics of milk flowing from the milking cluster to the milk line during the milking.
  • a control unit connected to the sensor controls the two-channel pulsator in order to create two short periods of time, each period typically lasting a few seconds, in which milk is flowing from only one half of the udder.
  • the control unit creates these two periods of time by controlling the pulsation device to subsequently momentarily partially interrupt the milking by interrupting the applied pulsation to each of two halves of an animal's udder in alternate fashion.
  • milk and milk-flow characteristics are measured from only a first half of the udder. This measuring procedure is then alternately repeated within the second period of time for the second half.
  • the characteristics of milk or milk-flow from the two halves of the udder are compared and analyzed to detect variations in the measurements between the two halves.
  • This method obtains an accurate and practical measurement of deviation in the milk and milk-flow characteristics from one or more of the teats, while providing a simple installation method and achieving a high performance level insensitive to calibration and sensitivity aspects in the sensor.
  • the proposed method further detects even slight changes in milk characteristics indicating the occurrence of an abnormal situation appearing in one or more of the animal's teats.
  • FIG. 1 is a block diagram of apparatus 10 for detection of changes in milk and milk flow characteristics, constructed and operated in accordance with the principles of the preferred embodiment of the present invention.
  • Apparatus 10 comprises a control unit 36 provided to control a "2 by 2" pulsator known in the art.
  • the pulsator includes two vacuum solenoid valves (numerals 28 and 30). Solenoid valves 28 and 30 are provided for a normal milking action according to milking techniques known in the art.
  • the solenoid valve can alternate vacuum and atmospheric pressure to the teat cups. Vacuum is supplied to the pulsator through line 42.
  • solenoid valve 28 is connected through tube 32 to the shell of teat-cups 16 and 17, wherein the output of solenoid valve 30 is connected through tube 34 to the shell of teat-cups 14 and 15.
  • the connection between the pulsator and the teat-cups are according to a common milking technique known in the art.
  • the inner liners of teat-cups 14 to 17 are connected to claw 13, all being part of a common milking cluster known in the art.
  • Milk tube 18 is provided for connecting claw 13 to the milk line 24.
  • At least one sensor (numeral 20) is provided for an online measurement of the milk characteristics flowing within milk tube 18.
  • a milk meter 22 is further connected to monitor the milk-flow characteristics (e.g. flow rates and accumulated yield) within milk tube 18.
  • Control unit 36 is further connected both to sensor 20 and to milk meter 22 and is capable of collecting data measurements made by sensor 20 and milk meter 22.
  • teat-cups 14 to 17 are attached to the teats of the animal's udder (numerals 1 to 4), thus enabling a normal milk flow within apparatus. 10.
  • control unit 36 applies electrical pulses to activate both halves of the pulsator (numerals 28 and 30), such that milking is performed in a normal manner (numeral 54, see Fig. 2).
  • teat- cup 14 is attached to teat 1
  • teat-cup 15 is attached to teat 3
  • teat-cup 16 is attached to teat 2
  • teat-cup 17 is attached to teat 4.
  • control unit 36 stops applying electrical pulses to solenoid valve 28. As a result, no vacuum pulses are generated into tube 32 and the secretion of milk from teats 2 and 4 is discontinued. Therefore, in this phase, milk flow is enabled only from teats 1 and 3.
  • control unit 36 stores these measurements, in association with teats 1 and 3.
  • control unit 36 stops applying electrical pulses to solenoid valve 30.
  • vacuum pulses through tube 34 stops.
  • electrical pulses to solenoid 28 and vacuum pulses through tube 32 are restored.
  • milk secretion from teats 1 and 3 is discontinued, wherein the secretion of milk from teats 2 and 4 is restored.
  • This phase is carried out until milk flow from teats 2 and 4 is stabilized and, in contrast, milk flow from teats 1 and 3 within tube 34 is stopped.
  • control unit 36 stores these measurements, in association with teats 2 and 4.
  • Control unit 36 analyzes the data measurements in real-time by comparing the measurements of the two halves (teats 1 and 3 vs. teats 2 and 4).
  • the pulsation can be stopped to stop milk secretion automatically.
  • a detacher may further be provided for automatically removing the cluster from the udder. .
  • Analyzed data measurements may be displayed on a display or monitoring device 38, thus issuing an alert for the operator to check the animal.
  • the farmer is able to take immediate actions, such as checking on the animal, diverting the milk and treating the animal if needed.
  • the milking procedure continues in a normal manner until a manual or automatic detachment of the milking cluster (teat-cups 14 to 17 together with claw 13) from the udder 12 at the end of the milking is performed.
  • Milk characteristics measured in this method may be in the form of electrical conductivity, color, absorption of electromagnetic radiation, reflection of electromagnetic radiation, electromagnetic spectrum analysis, velocity of ultrasonic wave in the milk, response to chemicals or reagents, viscosity and any other measurable milk characteristic.
  • Milk-flow characteristics can be one of: momentary flow rate, average flow rate, accumulated yield, milk velocity and any other measurable attributes of the flow of the milk.
  • control unit 36 is designed in such a way that if it does not receive reliable measurements according to a predefined setting. control unit 36 is provided to conduct an additional round of measurements, as explained above.
  • sensor 20 may be integrated within milk meter 22.
  • An optional computerized management system 40 is further provided to integrate the data measurements received from control unit 36.
  • the integrated measurement results are stored in a database along with the animal's identity for comparison with measurements received from previous milking and other animals.
  • the computerized management unit 40 produces reports for detecting the required animal, which are especially useful in large herds containing many animals.
  • Fig. 2 is a graphical illustration of electrical pulses generated by the control unit when activating solenoid valves 28 and 30 of the pulsator during the milking procedure, in accordance with the preferred embodiment of the present invention.
  • the black line 50 represents electrical pulses generated to operate solenoid valve 30.
  • the dotted line 52 represents electrical pulses generated to operate solenoid valve 28.
  • both solenoid valves (numerals 28 and 30, see Fig. 1) operate at normal manner of operation know in the art.
  • milk is secreted from all teats (numerals 1 to 4, see Fig. 1).
  • phase 56 electrical pulses to solenoid valve 28 are discontinued. As a result, milk secretion from second half of udder (teats 2 and 4) is stopped, so milk is secreted only from the first half of the udder (teats 1 and 3).
  • phase 58 electrical pulses to solenoid valve 30 are discontinued, whereas electrical pulses to solenoid valve 28 are resumed. Therefore, milk secretion from second half of teats (teats 1 and 3) is stopped, while the secretion of milk from second half is resumed. As a result, milk is secreted in this phase only from the first half of udder (teats 2 and 4).
  • phase 60 electrical pulses to solenoid valve 30 are resumed, so both solenoid valves 28 and 30 operate at normal state. As a result, milk-flow is re-enabled from all teats (numerals 1 to 4) once again. This stage is carried out until a manual or automatic detaching of teat-cups 14 to 17 at the end of the milking procedure is performed.
  • a discontinuation notation 62 is further shown upon the electrical pulses at the different phases, thus pointing out that the length of these phases may be actually longer and not necessarily limited to the three cycles illustrated herein for each of those phases.
  • the method as described above relates to dairy cows, it is to be understood that the description is not meant as a limitation, since the proposed method according to the present invention is provided for any other dairy animal with two or 4 teats, such as goats, sheep, buffalos, camels etc.

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  • Life Sciences & Earth Sciences (AREA)
  • Animal Husbandry (AREA)
  • Environmental Sciences (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un procédé et un appareil permettant une détection précoce de modifications anormales des caractéristiques du lait pendant la traite. Une unité de commande pilote un pulsateur à deux voies destiné à créer deux laps de temps brefs pendant la traite, chaque laps de temps durant généralement quelques secondes. Pendant le premier laps de temps, les caractéristiques du lait et le débit pendant la traite sont mesurés sur seulement une moitié du pis par arrêt temporaire du débit de lait de la seconde moitié du pis. Ce procédé de mesure est répété alternativement pendant le deuxième laps de temps pour la deuxième partie du pis. L'unité de commande sert à analyser les mesures des caractéristiques du lait en temps réel tout en pilotant le fonctionnement des deux voies séparément.
PCT/IL2005/000817 2005-08-01 2005-08-01 Procede et dispositif pour detecter les caracteristiques du lait pendant la traite WO2007015226A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/IL2005/000817 WO2007015226A2 (fr) 2005-08-01 2005-08-01 Procede et dispositif pour detecter les caracteristiques du lait pendant la traite
DE112005003651T DE112005003651T5 (de) 2005-08-01 2005-08-01 Verfahren und Vorrichtung zur Erfassung von Milchmerkmalen während des Melkens
NZ566064A NZ566064A (en) 2005-08-01 2005-08-01 Method and apparatus for detection of milk characteristics during milking
GB0803485A GB2443141A (en) 2005-08-01 2005-08-01 Method and apparatus for detection of milk characteristics during milking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IL2005/000817 WO2007015226A2 (fr) 2005-08-01 2005-08-01 Procede et dispositif pour detecter les caracteristiques du lait pendant la traite

Publications (2)

Publication Number Publication Date
WO2007015226A2 true WO2007015226A2 (fr) 2007-02-08
WO2007015226A3 WO2007015226A3 (fr) 2008-01-10

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PCT/IL2005/000817 WO2007015226A2 (fr) 2005-08-01 2005-08-01 Procede et dispositif pour detecter les caracteristiques du lait pendant la traite

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DE (1) DE112005003651T5 (fr)
GB (1) GB2443141A (fr)
WO (1) WO2007015226A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104186352A (zh) * 2014-08-10 2014-12-10 东北农业大学 奶牛个体挤奶信息在线监测设备
NL2019770B1 (nl) * 2017-10-20 2019-04-29 N V Nederlandsche Apparatenfabriek Nedap Boerderijsysteem en werkwijze voor het uitbreiden van een boerderijsysteem
WO2019199223A1 (fr) * 2018-04-13 2019-10-17 Delaval Holding Ab Procédés et appareils destinés à fournir une valeur de référence à utiliser pour la régulation de l'étalonnage d'un compteur de lait

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6164242A (en) * 1995-06-26 2000-12-26 Alfa Laval Agri Ab Method of regulating the vacuum level in a milking apparatus, and a milking apparatus
US6553934B2 (en) * 2001-01-03 2003-04-29 Senseability, Inc. Method and apparatus for monitoring milking facility pulsation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6164242A (en) * 1995-06-26 2000-12-26 Alfa Laval Agri Ab Method of regulating the vacuum level in a milking apparatus, and a milking apparatus
US6553934B2 (en) * 2001-01-03 2003-04-29 Senseability, Inc. Method and apparatus for monitoring milking facility pulsation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104186352A (zh) * 2014-08-10 2014-12-10 东北农业大学 奶牛个体挤奶信息在线监测设备
NL2019770B1 (nl) * 2017-10-20 2019-04-29 N V Nederlandsche Apparatenfabriek Nedap Boerderijsysteem en werkwijze voor het uitbreiden van een boerderijsysteem
WO2019199223A1 (fr) * 2018-04-13 2019-10-17 Delaval Holding Ab Procédés et appareils destinés à fournir une valeur de référence à utiliser pour la régulation de l'étalonnage d'un compteur de lait
CN111867367A (zh) * 2018-04-13 2020-10-30 利拉伐控股有限公司 用于提供将用于控制奶量器的校准的参考值的方法和设备
US11317595B2 (en) 2018-04-13 2022-05-03 Delaval Holding Ab Methods and apparatuses for providing a reference value to be used for controlling the calibration of a milk meter
CN111867367B (zh) * 2018-04-13 2023-01-31 利拉伐控股有限公司 用于提供将用于控制奶量器的校准的参考值的方法和设备

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Publication number Publication date
GB0803485D0 (en) 2008-04-02
WO2007015226A3 (fr) 2008-01-10
DE112005003651T5 (de) 2008-06-12
GB2443141A (en) 2008-04-23

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