SU1704718A1 - Milking process control method - Google Patents

Abstract

The invention relates to agriculture, in particular to methods for controlling the milking process on dairy complexes. The aim of the invention is to increase the efficiency by stimulating the milk transfer reflex while maintaining the optimal interaction of the milking machine with the animal during the whole milking process. The level of the intensity of milk removal is set to correspond to the end of the dispensing phase at the start of milking and the beginning of the dispensing phase at the end of milking. During the milking process, the number of pulsations varies depending on the lactation parameter in the range from the minimum to the maximum value at a constant sucking stroke time when the lactation rate is less than the level of the distribution and subdivision phases. When the intensity of the lactation level of the phases of distribution and doping is exceeded, the frequency of the pulsations is constant and the suction stroke duration varies from minimum to maximum value depending on the parameter of lactation. As a parameter of lactation, a total signal of the magnitude of the intensity and rate of change in the intensity of lactation is used. 3 il. ate with

Description

The invention relates to agriculture, in particular to methods for controlling the milking process on dairy complexes.

The aim of the invention is to increase the efficiency by stimulating the milk transfer reflex while maintaining the optimal interaction of the milking machine with the animal during the whole milking process.

FIG. 1 is a block diagram of a milking process control system; in fig. 2 — change in the frequency of pulsations and the duration of the sucking stroke during the milking process; in fig. 3 shows an algorithm for implementing a method for controlling a milking process.

The milking process control system includes a controller 1, comprising a clock signal generator 2, for example CR580GF24; microprocessor 3, for example KR580IK80A; frequency divider 4, implemented, for example, based on the K155 series; timer 5, for example KR580VI53; input device 6. for example KR580IK55; random access memory 7, implemented, for example, on the basis of a series KP541RU2; a persistent storage device 8 implemented, for example, on the basis of the K573 series; analog-to-digital converter 9, for example K1113PV1; key 10; sensor 11, made, for example VJ

ABOUT

-N vj

WITH

measures in the form of a device for measuring doses of milk; starting device 12, electromagnetic pulsator 13; milking manifold 14. Timer 5 provides real-time system operation. Channel O of timer 5 operates in mode 1 (standby multivibrator) and is designed to form a sucking stroke. Channel 1 of timer 5 operates in mode 3 (square wave generator) and is designed to generate a pulsation frequency. The joint operation of channel O and channel 1 of timer 5 under the control of microprocessor 3 provides the necessary range of variation in the frequency of pulsations and the duration of the sucking stroke. The reference frequency for the channels of timer 5 is formed by the frequency divider 4 from the THL signals — the level of the clock generator 2.

The method of machine milking of cows is carried out as follows.

At the beginning of the control cycle, the controller 1 checks for the presence of the signal AO from the starter 12. When the signal of the AO 1 comes from the starter 12, which indicates that the milking machine has begun connecting the animal to the animal, the controller 1 generates rectangular pulses that arrive at the key 10, The electromagnetic pulsator 13 is amplified and switched at a frequency of n nmin 40 pulse / min and a pulse duration of Ttnin of 0.3 s.

The dose of milk QI removed from the udder of the animal during the suction stroke, through the manifold of the milking machine 14 enters the sensor 11. The electric signal produced by sensor 11, proportional to the milk dose QI, is read by controller 1. The milk dose QI controller 1 determines the corresponding value lactation intensity qi, its increment Aqi and rate of change 91 dt

nor the intensity of lactation

If Aqi is 0, which indicates an increase in the intensity of milk withdrawal, then the sum of the intensity of milk withdrawal and its rate of change is taken as the parameter of milk withdrawal f. If Aqi is 0. This indicates a decrease in the intensity of lactation, then their difference is taken as a parameter of lactation.

 From the value of the lactation parameter qi, the controller 1 calculates the corresponding value of the ripple frequency u by substituting the qi value instead of qi for a given dependence ui f (qi). If current

the value of the ripple frequency ni is less than the minimum value of nmin 40 pulse / min, then the controller 1 will switch the pulsator 13 at a frequency of nmin. In addition, if this condition is fulfilled during Nr 10 measurements, which corresponds to 15 s and n 40 pulse / min, the controller 1 will give a signal to turn off the electromagnetic pulsator 13. Disable the electromagnetic pulsator 13

at the beginning of milking, evidence of inhibition of the lactation reflex and prevents injury to the udder of the animal.

If the current value of the ripple frequency w will be within the control interval pt1n ni hmex. then the controller 1 will switch the electromagnetic pulsator 13 with a frequency u. Thus, with the increase in the parameter milk-. in the initial phase of the milking, the number of pulsations increases with a constant sucking time.

When the current value of the pulsation frequency reaches the maximum value of the control limit and more, the controller

1 will switch the pulsator 13 with a constant pulsation frequency nm x x 80 pulse / min, nose with a variable duration of the clock cycle G | . Thus, in the main phase of the milking, the duration of the suction stroke will vary within the adjustment interval rmin r tmta depending on the lactation parameter at a constant pulsation frequency.

In the final milking phase, with a decrease in the lactation parameter, the frequency of pulsations u will decrease to the minimum value of the control limit nmin with a constant duration of the suction stroke equal to rmin. By doing

The condition nmin during N 10 measurements of the milk dose controller 1 will give a signal to turn off the pulsator, indicating that the milk has finished.

Claims (1)

Invention Formula A method for controlling the milking process, including dispensing while simultaneously measuring the intensity of milk withdrawal, measuring the frequency of the pulsations of the milking machine and changing the boundary limits of the frequency of pulsations and the duration of the sucking stroke, depending on the lactation parameter, for which the total signal of the magnitude of the intensity and rate of change in the intensity of lactation is used. about t - characterized by the fact that, in order to increase efficiency by stimulating the milk reflex reflex while maintaining the optimal interaction of the milking the apparatus with animals during the entire milking process, establish the level of the intensity of lactation corresponding to the end of the distribution phase at the beginning of the milking and the beginning of the doping phase at the end of milking, change the number of pulsations in zevimy from the parameter of lactation in the range from minimum to maximum value for a constant duration 0 when the intensity of milk withdrawal is less than the level of the distribution and doping phases, when the intensity of the milk excretion is exceeded, the distribution and doping phases maintain a constant pulsation frequency and change the duration of the suction cycle depending on the milk excretion parameter from minimum to maximum. 2 t.MMH DOWNLOAD) Jl. SIGNAL WITH PC HMttPEHUfl Oil OPREL RU "HЈl) LENTZ gp- {(4-Q Htt OTikA. PULSER | UCTAHOCiHTb T Tmln) FIG Z. Htt A4  jCTAHOtUTbt-Ti | I ATTDT -Tmo zr