WO2008069734A1 - Dispositif, procédé et programme informatique pour tester une machine à traire par l'étude du vide en mode de fonctionnement - Google Patents

Dispositif, procédé et programme informatique pour tester une machine à traire par l'étude du vide en mode de fonctionnement Download PDF

Info

Publication number
WO2008069734A1
WO2008069734A1 PCT/SE2007/050662 SE2007050662W WO2008069734A1 WO 2008069734 A1 WO2008069734 A1 WO 2008069734A1 SE 2007050662 W SE2007050662 W SE 2007050662W WO 2008069734 A1 WO2008069734 A1 WO 2008069734A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum
pressure
vacuum pressure
alarm
milking machine
Prior art date
Application number
PCT/SE2007/050662
Other languages
English (en)
Inventor
Lars Innings
Original Assignee
Delaval Holding Ab
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 Delaval Holding Ab filed Critical Delaval Holding Ab
Priority to DE112007002990T priority Critical patent/DE112007002990T5/de
Publication of WO2008069734A1 publication Critical patent/WO2008069734A1/fr

Links

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
    • 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
    • A01J5/047—Vacuum generating means, e.g. by connecting to the air-inlet of a tractor engine
    • A01J5/048—Vacuum regulators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid

Definitions

  • the present invention relates generally to machine milking of animals. More particularly the invention relates to a testing arrangement for a milking machine according to the preamble of claim 1 , a milking machine according to the preamble of claim 9. Moreover, the invention relates to a testing method according to the preamble of claim 10, a computer program according to claim 17 and a computer readable medium according to claim 18.
  • US, 6,705,247 describes a method for testing animals being milked by means of a system, which in turn, includes a plurality of milk meters.
  • a remote control device provides a single interface with all milk meters for inputting and receiving of data.
  • the recorded measurement data may serve as a basis for determining various animal related parameters.
  • WO00/75610 discloses a solution for monitoring a vacuum supp- Iy pulsator device during milking.
  • a signal describing a varying position of a flexible diaphragm is used to determine different kinds of malfunctions in the milking line and the teat cups, for instance being caused by a small leakage or dirt.
  • wet (or dynamic) testing which is perfor- med on a milking machine in the working mode offers a much more accurate diagnosis means than the above-mentioned dry testing.
  • wet testing the influence of different amounts of milk and milk flow rates can be determined.
  • an overall plant performance in the working mode is provided.
  • 1991 discloses one example of a method for measuring varia- tions in milking vacuum during actual milking.
  • the object of the present invention is therefore to alleviate the problem above and thus offer a straightforward and reliable means to carry out dynamic testing of a milking machine.
  • the object is achieved by the initially described arrangement, wherein the sensor means is configured to register a vacuum pressure in a fluid member of the milking machine in which the vacuum pressure fluctuates in response to both the first and second series of pressure level variations.
  • the analysis unit is adapted to receive the registered vacuum pressure during a measure- ment interval including at least one respective pressure decrease in the vacuum pressure level caused by each of the at least one first and second outlets.
  • the analysis unit is further adapted to compare at least two successive vacuum decreases with one another to determine whether or not an alarm criterion is fulfilled; and if the alarm criterion is found to be fulfilled, the analysis unit is adapted to generate an alarm-triggering signal.
  • the sensor means is configured to register the vacuum pressure in the common volume (e.g. represented by a milking claw). Furthermore, the analysis unit is adapted to compare at least two successive vacuum decreases in the vacuum pressure with one another by determining a respective deviation between a lowest value of a first vacuum decrease and a lowest value of a second vacuum decrease subsequent thereto. If the absolute value of a predetermined number, say one, of deviations exceed a threshold value, the analysis unit is adapted to generate the alarm-triggering signal. Thereby, pressure-related faults in the teat cups, in the milk hoses connecting them to the common volume and/or in the pulsation source can be detected.
  • the common volume e.g. represented by a milking claw
  • the analysis unit is adapted to lowpass-filter the regis- tered vacuum pressure before carrying out said comparison. Hence, false alarms can be avoided, which are caused by high- frequency spurious components in the vacuum pressure signal.
  • the measurement interval has such extension that it includes three or more vacuum decreases.
  • the analysis unit is adapted to calculate a first average value of the lowest values of all odd-numbered vacuum decreases within the measurement interval, and calculate a second average value of the lowest values of all even-numbered vacuum decreases within the measurement interval.
  • the analysis unit is further adapted to determine a difference between the first average value and the second average value, and if the absolute value of the difference exceeds the threshold value, the analysis unit is adapted to generate the alarm-triggering signal.
  • the alarm-triggering signal is adapted to indicate a fault in the teat cups, in the milk hoses connecting the teat cups to the milking claw and/or in the pulsation source.
  • said deviation may originate from malfunctions (e.g. due to leakage or clogging) in any of these components in the milking machine.
  • the sensor means is instead configured to register the vacuum pressure in a first milk hose of the milk hoses connected to the common volume.
  • the first milk hose is also connected to a first teat cup via which milk is extracted in response to the first series of pressure variations.
  • the analysis unit is adapted to compare at least two successive vacuum decrea- ses in the vacuum pressure with one another by determining a respective deviation between a lowest vaiue of a first vacuum decrease and a lowest value of a second vacuum decrease subsequent thereto. If the absolute value of a predetermined number, say two, of deviations exceed a threshold value, the ana- lysis unit is adapted to generate the alarm-triggering signal.
  • the alarm-triggering signal specifically indicates a flow-rate related fault in respect the milk hoses, for ins- tance concerning an insufficient flow rate capacity.
  • the object is achieved by the initially described milking machine, wherein the milking machine includes the above-proposed arrangement.
  • the object is achieved by the initially described method, wherein the vacuum pressure is registered in a fluid member of the milking machine in which the vacuum pressure fluctuates in response to both the first and second series of pressure level variations during a measurement interval including at least one respective pressure decrease in the vacuum pressure level caused by each of the at least one first and second outlets. At least two successive vacuum decreases are compared with one another to determine whether or not an alarm criterion is fulfilled. If such a criterion is found to be fulfilled, an alarm-triggering signal is generated.
  • the object is achieved by a computer program, which is loadable into the in- ternal memory of a computer, and includes software for controlling the above proposed method when said program is run on a computer.
  • the object is achieved by a computer readable medium, having a program recorded thereon, where the program is to control a computer to perform the above-proposed method.
  • Figure 1 shows an example of a milking machine and a testing arrangement according to a first embodiment of the invention
  • Figures 2a, b show diagrams illustrating various vacuum pressures in the milking machine as functions over time, which are analyzed according to the first embodiment of the invention
  • Figure 3 shows an example of a milking machine and a tes- ting arrangement according to a second embodiment of the invention
  • Figures 4a-c show diagrams illustrating various vacuum pressures in the milking machine as functions over time, which are analyzed according to the second embodiment of the invention.
  • Figure 5 illustrates, by means of a flow diagram, the general method of controlling a computer apparatus to perform the proposed testing procedure according to the of invention.
  • Figure 1 shows an example of a milking machine for milking animals, such as cows.
  • Figure 1 also shows a testing arrangement according to a first embodiment of the invention, wherein the testing arrangement is configured to diagnose the milking machine.
  • the testing arrangement may either be integrated into the milking machine (i.e. constitute a permanent part thereof), or be temporarily connected to the milking machine.
  • the former is preferable if repeated/continuous monitoring is desired, while the latter is advantageous if occasional diagnosing is to be performed.
  • the milking machine includes at least two teat cups (preferably at least four) 101 , 102, 103 and 104, which are to be connected to the teats of an animal from which milk is to be extracted.
  • a respective milk hose 1 1 1 , 112, 1 13 and 1 14 from each of the teat cups 101 , 102, 103 and 104 are interconnected via a common volume 120, e.g. as a milking claw.
  • the milking machine also includes a pulsation source 180, such as a pulsator.
  • a first outlet 181 of the pulsation source 180 is connected to at least one first teat cup, say 101 and 102, via a respective pulsation conduit.
  • a second outlet 182 of the pulsation source 180 is connected to at least one second teat cup, say 103 and 104, via a respective pulsation conduit.
  • a respective pulsation source outlet for each of the teat cups 101 , 102, 103 and 104 is required.
  • the pulsation source 180 must be configured to control these outlets individually according to a cyclic sequence, such that when the vacuum pressure is relatively low in one of the teat cups the vacuum pressure is relative- Iy high in the other teat cups, and so on.
  • Individual pulsation milking is generally desirable in automated milking implements, such as milking robots.
  • first outlet 181 is configured to cause a first series of variations in a pressure level in the at least one first teat cup 101 and 102
  • second outlet 182 is configured to cause a second series of variations in a pressure level in the at least one second teat cup 103 and 104
  • first and second series of pressure variations are interleaved and separated in time, so that the vacuum pressure level in the at least one first teat cup 101 and 102 is relatively high when the vacuum pressure in the at least one second teat cup 103 and 104 is relatively low, and vice versa. This will be further elucidated below with reference to Figure 2a.
  • the milking machine preferably also includes the following components: a main conduit 175 that supplies a vacuum pressure to all vacuum operated units in the milking machine, either directly or indirectly; a pump device 190 that accomplishes the vacuum pressure in the main conduit 175; a buffer vessel 170 and a feedback loop connected to the pump device 190 and the conduit 175 to stabilize the pressure at a desired level, say in a range from 30 to 60 kPa (The feedback loop, in turn, may include a pressure sensor 186 and a control unit 187, which influences the pump device 190 in response to a main-conduit-pressure signal registered by the sensor 186.); a receiver tank 150 representing a common resource for receiving milk from a plurality of milking claws 120, say up to 20, (The receiver tank 150 may have a capacity of 50 liters.
  • the milk continues M O u ⁇ to a storage tank (not shown)); a shut-off valve 125 arranged on a milk hose 121 connecting the milking claw 120 with the receiver tank 150; and a milk flow meter 130 adapted to register a milk flow related parameter in respect of the milking claw 120.
  • a sanitary trap 160 may be included in a conduit that connects the receiver tank 150 with main vacuum conduit 175. Thus, any dirt in the main vacuum conduit 175 is prevented from reaching the milk in the receiver tank 150.
  • the proposed testing arrangement includes a sensor means S and an analysis unit A, and accor- ding to the first embodiment illustrated in Figure 1 , the sensor means S is adapted to register a vacuum pressure P c in the common volume milking claw 120.
  • the sensor means S delivers a signal representing the vacuum pressure P c to the analysis unit A.
  • the analysis unit A is adapted to receive the registered vacuum pressure Pc, analyze its variations over time and based thereon, and determines whether or not the milking machine operates acceptably.
  • the analysis unit A is adapted to receive the registered vacuum pressure P c during a measurement interval that includes at least one respective pressure decrease in the vacuum pressure level P 0 caused by each of the at least one first and second outlets 181 and 182 respectively.
  • the analysis performed in the unit A involves comparing at least two successive vacuum decreases with one another in order to test an alarm criterion.
  • the analysis unit A is adapted to determine a respective deviation between a lowest value of a first vacuum decrease and a lowest value of a second vacuum decrease subsequent thereto. If the absolute value of a predetermined number (e.g. 1 , however de- pending on the duration of the measurement interval any higher integer is technically conceivable according to the invention) of the thus determined deviations exceed a threshold value, the analysis unit A is adapted to generate an alarm-triggering signal ⁇ .
  • the analysis unit A includes, or is associated with a computer readable medium M, such as a memory module, where the medium M contains a program that is adapted to make the analysis unit A control the above-proposed procedure.
  • FIG. 2a shows a diagram representing various vacuum pressures P in the milking machine as functions over time t.
  • Vacuum pressure variations Pi 81 on the first outlet 181 of the pulsation source 180 are here reflected by means of bold solid graph, and vacuum pressure variations P 182 on the se- cond outlet 182 are reflected by means of a dash-dotted graph.
  • the vacuum pressure variations P 181 on the first outlet 181 constitute a first series of pressure variations while the vacuum pressure variations P 182 on the second outlet 182 constitute a second series of pressure variations generated by the pulsation source 180.
  • the first and second series of pressure variations are interleaved and separated in time, such that the vacuum pressure P 181 on the first outlet 181 (i.e. the pressure controlling the pressure level in the at least one first teat cup 101 and 102) is relatively high when the vacuum pressure P 182 on the second outlet 182 (i.e. the pressure controlling the pressure level in the at least one second teat cup 103 and 104) is relatively low, and vice versa, such that the vacuum pressure P 181 on the first outlet 181 is relatively low when the vacuum pressure P 182 on the second outlet 182 is relatively high.
  • the vacuum pressure P 181 on the first outlet 181 i.e. the pressure controlling the pressure level in the at least one first teat cup 101 and 102
  • the vacuum pressure P 182 on the second outlet 182 i.e. the pressure controlling the pressure level in the at least one second teat cup 103 and 104
  • the vacuum pressure P 181 starts to decrease from a maximum value P 0 , say around 50 kPa, at a first point in time t-i , and shortly thereafter a vacuum level of approximately zero is reached. At a later point in time t 2 , the vacuum pressure P 181 again rises rapidly up to P 0 . During an interval from U to a third point in time t 3 (where t 3 > t 2 ), the vacuum pressure P 182 remains essentially equal to P 0 . However, at t 3 the vacuum pressure P 182 decreases rapidly down to approximately zero, and at yet later point in time t 4 , the vacuum pressure P 182 rises rapidly up to P 0 . Analogously, the vacuum pressure P 181 remains essentially equal to P 0 during an interval from t 3 to t 4 .
  • both the pressure variations P 181 and P 182 influence the vacuum pressure level P c in this volume 120 (i.e. P c fluctuates in response to both the first and second series of pressure level variations generated by the pulsation source 180).
  • the vacuum pressure P c is also illustrated as a function over time t in Figure 2a. The variations in the vacuum pressure level Pc are less dramatic than those of P 181 and P 182 .
  • a lowest value P 15 of a first decrease in the vacuum pressure P c caused by the vacuum pres- sure P 181 on the first outlet 181 is reached at a point in time t- ⁇
  • a lowest value P 37 (say around 40 kPa) of a second decease in the vacuum pressure P 0 caused by the vacuum pressure Pi 82 on the second outlet 182 is reached at a point in time t 31 (where t 31 > tn).
  • This pattern is the repeated, such that P 15 is reached again at t 5 i as the lowest value of a third decrease in the vacuum pressure P c (where t 51 > t 31 ) caused by the vacuum pressure Pi 81 on the first outlet 181 and P 37 is reached again at t 71 as the lowest value of a fourth decrease in the vacuum pressure P c (where t 71 > t 51 ) caused by the vacuum pressure P 182 on the second outlet 182, and so on.
  • every second pressure decrease in the vacuum pressure Pc is caused by the vacuum pressure P 181 on the first outlet 181 and the teat cups 101 and 102 associated thereto, and every second pressure decrease in the vacuum pressure P c is caused by the vacuum pressure P 182 on the second outlet 181 and the teat cups 103 and 104 associated thereto.
  • the difference between two consecutive decreases in the vacuum pressure level P 0 is relatively high, this may be due to a malfunction in one of the above-mentioned at least one first and second teat cups. Ty- pically the teat cups being associated with the deviating smaller vacuum pressure decrease is defective in one way or another.
  • the analysis unit A receives the registered vacuum pressure P c during a measurement interval T m1 , which includes at least one respecti- ve pressure decrease in the vacuum pressure level P c caused by each, of the at least one first and second outlets 181 and 182.
  • a sufficient extension of the measurement interval T m1 can be guaranteed by setting the measurement interval T m1 relative to the known (or measured) pulsation frequency of the pulsation source 180.
  • the analysis unit A then compares at least two successive vacuum decreases in the pressure P c with one another by determining a respective deviation between a lowest value of a first vacuum decrease and a lowest value of a second vacuum dec- rease subsequent thereto.
  • the analysis unit A If the absolute value of a predetermined number (> 1 ) of deviations exceed a threshold value, the analysis unit A generates an alarm-triggering signal ⁇ , e.g. if Pi S -P 37 I > a predefined magnitude.
  • the analysis unit A is further adapted to lowpass-filter the registered vacuum pressure P 0 before carrying out the comparison between the at least two successive vacuum decreases in the pressure P c .
  • the measurement interval has such extension that the interval includes three or more vacuum decreases in the vacuum pressure signal P c .
  • Figure 2b shows a measurement interval T m2 , from ti to t 8 , which includes a first vacuum decrease having its lowest value at i u , a second vacuum decrease having its lowest value around P 37 at t 31 , a third vacuum decrease having its lowest value at t 51 and a fourth vacuum decrease having its lowest value somewhat above P 37 at t 71 .
  • the analysis unit A is here adapted to calculate a first average value of the lowest values of all odd- numbered vacuum decreases (i.e. at t-n and t 5 i in Figure 2b) within the measurement interval T m2 .
  • the analysis unit A is likewise adapted to calculate a second average value of the lowest values of all even-numbered vacuum decreases (i.e. at t 31 and t 71 in Figure 2b) within the measurement interval T m2 .
  • the ana- lysis unit A is then adapted to determine a difference between the first average value and the second average value. If the absolute value of the difference exceeds the threshold value, the analysis unit A generates the alarm-triggering signal ⁇ .
  • this approach is applicable to any number of vacuum decreases larger than two, i.e. also for odd numbers of vacuum decreases.
  • the alarm-triggering signal ⁇ is adapted to indicate, explicitly or implicitly, a fault in one or more of these components of the milking machine.
  • Figure 3 shows an example of a milking machine and a testing arrangement according to a second embodiment of the invention. All reference signs in Figure 3 being identical to reference signs also occurring in Figure 1 designate the same components and parameters as those described above with reference to Figures 1 and 2.
  • a sensor means Si is arranged to register a vacuum pressure P 1 in one of the milk hoses, here 1 1 1 , via which milk is extracted in response to the first series of pressure variations caused by the first outlet 181 of the pulsation source 180.
  • the analysis unit A is further adapted to receive the registered vacuum pressure P 1 during a measurement interval including at least one respective pressure decrease in the vacuum pressure P-i caused by each of the at least one first and second outlets 181 and 182. Again, a sufficient extension of the measurement interval can be guaranteed by setting the measurement interval relative to the known (or measured) pulsation frequency of the pulsation source 180.
  • the analysis unit A is adapted to compare at least two successive va- cuum decreases in the vacuum pressure P-i with one another by determining a respective deviation between a lowest value of a first vacuum decrease and a lowest value of a second vacuum decrease subsequent thereto. If the absolute value of a predetermined number of such deviations exceed a threshold value, the analysis unit A is adapted to generate the alarm-triggering signal ⁇ .
  • P x -P y of the deviation between the lowest values P x and P y of the first and second pressure decreases is relatively large. Let us assume that this deviation exceeds the threshold value. Then, the analysis unit A will generate the alarm-triggering signal ⁇ .
  • the absolute value of the deviation between the lowest values of the first and second pressure decreases is roughly equal to zero. Therefore, the analysis unit A will also in this case refrain from generating any alarm-triggering signal ⁇ . Nevertheless, here, it is still likely that the milking machine is faulty, for example with respect to the common volume 120. This type of malfunctions can normally be detected by the above-proposed arrangement according to the first embodiment of the invention. Hence, the first and second embodiments complement one another.
  • the measurement interval T m2 can be extended to include more than two decreases in the vacuum pressure P 1 .
  • the analysis unit A may be adapted to generate the alarm-triggering signal ⁇ if and only if more than one absolute value
  • the analysis unit A may be adapted to calculate a first average value of the lowest values of all odd-numbered vacuum decreases within the measurement interval T m2 (i.e. at t-n and t 51 in Figures 4a, 4b and 4c).
  • the analysis unit A is also adapted calculate a second average value of the lowest values of all even-numbered vacuum decreases (t 3 i, t 7 i) within the measurement interval T m2 (i.e. at t 31 and t 71 in Figures 4a, 4b and 4c).
  • the analysis unit A is then adapted to determine a difference between the first average value and the second average value, and if the absolute value of the difference exceeds the threshold value, the analysis unit A generates the alarm-trigge- ring signal ⁇ .
  • a first step 510 registers a vacuum pressure in a fluid member of the milking machine in which the vacuum pressure fluctuates in. response to both a first and a second series of pressure level variations generated by a first and a second outlet respectively of a pulsation source. It is here presumed that the milking machine has at least two teat cups being connected to a common volume via a respective milk hose.
  • first and second series of pressure variations are interleaved and separated in time, such that the pressure level in at least one first teat cup is relatively high when the pressure level in at least one second teat cup is relatively low, and vice versa.
  • the vacuum pressure i.e. P c and/or P-O in the fluid member (represented by the common volume and/or a milk hose respectively) is registered during a measurement interval that includes at least one pressure decrease in the vacuum pressure level caused by the first outlet and at least one pressure decrease in the vacuum pressure level caused by the second outlet.
  • a second step 520 then compares (at least) two successive vacuum decreases in the vacuum pressure with one another.
  • a step 530 investigates whether or not an alarm criterion is fulfilled, by for example testing a computed pressure difference against a threshold value. If the alarm criterion value is found not to be fulfilled, the procedure loops back to step 510. Otherwise, i.e. if the alarm criterion value is found be fulfilled, a step 540 follows, which generates an alarm-triggering signal ⁇ , indicative of an unacceptable operation of the milking machine. Subsequently, the procedure may either end, or loop back to step 510 for continued testing of the milking machine.
  • All of the process steps, as well as any sub-sequence of steps, described with reference to Figure 5 above may be controlled by means of a programmed computer apparatus.
  • the embodiments of the invention described above with reference to the drawings comprise computer apparatus and processes performed in computer apparatus, the invention thus also extends to computer programs, particularly computer programs on or in a carrier, adapted for putting the invention into practice.
  • the program may be in the form of source code, object code, a code intermediate source and object code such as in partially compiled form, or in any other form suitable for use in the implementation of the process according to the invention.
  • the program may either be a part of an operating system, or be a separate application.
  • the carrier may be any entity or device capable of carrying the program.
  • the carrier may comprise a storage medium, such as a Flash memory, a ROM (Read Only Memory), for example a DVD (Digital Video/Versatile Disk), a CD (Compact Disc) or a semiconductor ROM, an EP- ROM (Erasable Programmable Read-Only Memory), an EEPROM (Electrically Erasable Programmable Read-Only Memory), or a magnetic recording medium, for example a floppy disc or hard disc.
  • the carrier may be a transmissible carrier such as an electrical or optical signal which may be conveyed via electrical or optical cable or by radio or by other means.
  • the carrier may be constituted by such cable or device or means.
  • the carrier may be an integrated circuit in which the program is embedded, the integrated circuit being adapted for performing, or for use in the performance of, the relevant processes.
  • the invention primarily is intended to be utilized in connection with cow milking, the invention is equally well adapted for testing milking machines for any other kind of mammals, such as goats, sheep or buffaloes.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Animal Husbandry (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne la mise à l'essai d'une machine à traire. On suppose que la machine à traire comprend au moins deux gobelets trayeurs (101, 102, 103, 104) reliés à un volume commun (120) par l'intermédiaire d'un tuyau à lait (111, 112, 113, 114) respectif. Une source de pulsation (180) de la machine à traire comporte une première sortie (181) conçue pour produire une première série de variations du niveau de pression dans au moins un premier gobelet trayeur (101, 102). La source de pulsation (180) comporte aussi une deuxième sortie (182) conçue pour produire une deuxième série de variations du niveau de pression dans au moins un deuxième gobelet trayeur (103, 104). Les première et deuxième séries de variations de pression sont entrelacées et séparées dans le temps, de sorte que le niveau de pression dans le(s) premier(s) gobelet(s) trayeur(s) (101, 102) est relativement élevé lorsque le niveau de pression dans le(s) deuxième(s) gobelet(s) trayeur(s) (103, 104) est relativement bas, et inversement. Le dispositif d'essai comprend un moyen capteur (S) et une unité d'analyse (A). Le moyen capteur (S) est configuré pour enregistrer la pression de vide (Pc) dans le volume commun (120) ou dans l'un des tuyaux à lait reliés à celui-ci. L'unité d'analyse (A) permet de recevoir la pression de vide (P0) enregistrée pendant un intervalle de mesure comprenant au moins une diminution de pression respective du niveau de pression de vide (Pc) produite par chacune des sorties (181; 182). L'unité d'analyse (A) permet en outre de comparer deux diminutions de pression successives afin de déterminer si la machine à traire fonctionne de manière acceptable. Si, dans la comparaison, un critère d'alarme est rempli, l'unité d'analyse (A) produit un signal déclenchant une alarme (α).
PCT/SE2007/050662 2006-12-08 2007-09-18 Dispositif, procédé et programme informatique pour tester une machine à traire par l'étude du vide en mode de fonctionnement WO2008069734A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007002990T DE112007002990T5 (de) 2006-12-08 2007-09-18 Anordnung, Verfahren und Computerprogramm zum Testen von Melkmaschinen anhand des Vakuums im Betriebsmodus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0602644A SE531003C2 (sv) 2006-12-08 2006-12-08 Mjölkmaskinstestning
SE0602644-7 2006-12-08

Publications (1)

Publication Number Publication Date
WO2008069734A1 true WO2008069734A1 (fr) 2008-06-12

Family

ID=39492471

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/050662 WO2008069734A1 (fr) 2006-12-08 2007-09-18 Dispositif, procédé et programme informatique pour tester une machine à traire par l'étude du vide en mode de fonctionnement

Country Status (3)

Country Link
DE (1) DE112007002990T5 (fr)
SE (1) SE531003C2 (fr)
WO (1) WO2008069734A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130025541A1 (en) * 2010-04-09 2013-01-31 Delaval Holding Ab Arrangement and method for analyzing milk
CN103518628A (zh) * 2013-10-23 2014-01-22 李保岭 电脉动挤奶机的电子控制器
WO2016190830A1 (fr) * 2015-05-28 2016-12-01 Algan Yazilim Ve Bi̇li̇şi̇m Maki̇ne Elektroni̇k Hayvancilik Ti̇caret Li̇mi̇ted Şi̇rketi̇ Pince de surveillance de pulsations

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1297773A1 (ru) * 1985-10-05 1987-03-23 Кишиневский Научно-Исследовательский Институт Электроприборостроения Устройство дл измерени параметров пульсаций доильного аппарата
WO2000075610A1 (fr) * 1999-06-03 2000-12-14 Delaval Holding Ab Dispositif et procede de surveillance d'un dispositif pulsatoire d'alimentation en vide
US6705247B1 (en) * 1998-04-02 2004-03-16 Tru-Test Limited Remote control and data logging
GB2394291A (en) * 2002-10-16 2004-04-21 Paul Crudge Sensing system for a milking installation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1297773A1 (ru) * 1985-10-05 1987-03-23 Кишиневский Научно-Исследовательский Институт Электроприборостроения Устройство дл измерени параметров пульсаций доильного аппарата
US6705247B1 (en) * 1998-04-02 2004-03-16 Tru-Test Limited Remote control and data logging
WO2000075610A1 (fr) * 1999-06-03 2000-12-14 Delaval Holding Ab Dispositif et procede de surveillance d'un dispositif pulsatoire d'alimentation en vide
GB2394291A (en) * 2002-10-16 2004-04-21 Paul Crudge Sensing system for a milking installation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 198742, Derwent World Patents Index; Class P13, AN 1987-297150 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130025541A1 (en) * 2010-04-09 2013-01-31 Delaval Holding Ab Arrangement and method for analyzing milk
US9675038B2 (en) * 2010-04-09 2017-06-13 Delaval Holding Ab Arrangement and method for analyzing milk
CN103518628A (zh) * 2013-10-23 2014-01-22 李保岭 电脉动挤奶机的电子控制器
WO2016190830A1 (fr) * 2015-05-28 2016-12-01 Algan Yazilim Ve Bi̇li̇şi̇m Maki̇ne Elektroni̇k Hayvancilik Ti̇caret Li̇mi̇ted Şi̇rketi̇ Pince de surveillance de pulsations

Also Published As

Publication number Publication date
SE531003C2 (sv) 2008-11-18
SE0602644L (sv) 2008-06-09
DE112007002990T5 (de) 2010-01-07

Similar Documents

Publication Publication Date Title
US7957920B2 (en) Milking machine testing
JP3662932B2 (ja) 動物搾乳装置
EP2263449A2 (fr) Dispositif de surveillance d'une cuve à lait, et assemblage d'un robot de traite muni d'une unité de démarrage automatique et d'un tel dispositif
US8191507B2 (en) Automatic monitoring of milking plant valve means
RU2732339C2 (ru) Система и способ оценки процесса очистки применительно к трубопроводной конструкции для транспортировки молока
SE505351C2 (sv) Sätt att övervaka funktionen hos en mjölkningsmaskin jämte mjölkningsmaskin
WO2008069734A1 (fr) Dispositif, procédé et programme informatique pour tester une machine à traire par l'étude du vide en mode de fonctionnement
EP3358944A1 (fr) Appareil de diagnostic et procédé de test
AU2016282211B2 (en) A sanitary monitoring system
US11553685B2 (en) Control unit, method and computer program for a milking system
US20230225283A1 (en) System and computer-implemented method for monitoring operating pressure in a milking installation, computer program and non-volatile data carrier
US9743634B2 (en) Method and apparatus for monitoring a milking process
US20040244700A1 (en) Milking device and method
CA2854104C (fr) Procede et appareil pour controle d'un processus de traite
EP1207744B1 (fr) Procede et dispositif de detection de glissement de manchons trayeurs
WO1999063806A1 (fr) Capteur pour machines a traire
CN117661235A (zh) 洗涤设备的控制方法
WO2000005943A1 (fr) Dispositif et procede permettant de detecter l'infection du pis d'un animal
SE516601C2 (sv) Anordning och förfarande för övervakning av en pulseringsanordning för matning av undertryck

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07808899

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 1120070029900

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07808899

Country of ref document: EP

Kind code of ref document: A1

RET De translation (de og part 6b)

Ref document number: 112007002990

Country of ref document: DE

Date of ref document: 20100107

Kind code of ref document: P