KR910004251B1 - Devices for sesame oil expression - Google Patents

Abstract

The oil press controller comprises a microprocessor (153), a circuit for detecting oily seeds e.g. sesame, perilla, a circuit for sensing the oil press temperature, and a circuit for switching a motor power. It the oil press is switched on, a built-kin program of the microprocessor orders the circuit to detect if the oily seeds are supplied in the press, an oil press cylinder is pre-heated to a reference temperature, and the oil pressing starts through the motor power switching circuit. During oil pressing, the cylinder temperature is regulated by continuously sensing the temperature and heating the cylinder to the reference temperature.

Description

Milking machine control

1 is a schematic view showing that a milking machine control device according to the present invention is connected to a milking machine.

2 is a circuit diagram showing an embodiment of the milking machine control device according to the present invention.

3 is a flowchart showing the control process of the milking machine by the milking machine control apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1-28: Pin number 117 of the microprocessor: Milking cylinder

121: input port 150: input detection circuit

151: temperature detection circuit 152: heating circuit

153: microprocessor 154: motor power switching circuit

155: tap switching circuit 156: oil barrel and ink bottle insertion detection circuit

157: overcurrent detection circuit 158: power supply voltage detection circuit

159: trigger synchronization circuit 160: display circuit

161: preheat temperature rise circuit Hi: heater

M: Motor R _1- R ₂₇ : Resistance

C ₁ -C ₇ : Condenser IC₁-IC₄: For comparison

IC, Q₁-Q₄: Transistors TRIAC1, TRIAC2: Triac

D ₄ -D ₉ , D ₁₁ : LED D ₁₂ : Photodiode

D ₁ , D ₂ , D ₁₀ , D ₂₀ : Diode Ry: Relay

Th₁: Thermistor L ₁ : Coil

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a control device for a milking machine that enables milking of milked products such as sesame seeds, and more particularly to a control device for a domestic milking machine.

A milking machine for home use for milking sesame lamps generally installs a conveying screw formed with a spiral on the outer periphery by tapering a rotating shaft interlocked with a motor shaft in the milking cylinder and at the same time. A milking cylinder is provided with an inlet provided with an inlet for injecting a milking object, and an oil outlet and oil outlet for milking are formed at the lower side of the conveying screw, and milking is performed to milk the milk efficiently. It is composed by installing a heater for heating the sesame oil which is milked on the outer periphery of the site. Insert the oil container and the ink container into the oil outlet and the ink discharge port, insert the roasted sesame into the sesame inlet on the absorber, and then turn on the power. When the heater is heated, the motor is rotated at the same time as the heater is heated. Is transported, compressed and milked.

However, the above-described conventional milking machine heats the heater and drives the motor at the same time when the power is turned on. When milking is started without sufficient preheating of the milking cylinder, the milked milk, sesame seeds, and oil The back is entangled and attached to the transfer screw, which causes the motor to stop due to overload of the motor, and not only does not continue milking, but also causes the overcurrent to flow to the motor when it is left as it is. In addition, another problem is that there is no control means for controlling the heater driving power to detect the temperature of the milking cylinder and adjust the temperature to an appropriate temperature. Therefore, if the milking cylinder is higher or lower than the proper temperature during milking, the milking rate is lowered. If the temperature is severely lower than the proper temperature, the motor will be overloaded due to the above-described reasons, and the motor will be burned. If the temperature is too high, the sesame seeds will be burned, and the milking quality will be degraded. The heat heated to the temperature is transferred to the sesame inlet to evaporate the moisture contained in the sesame seeds in this area, so that the inlet is entangled and the inlet is closed.

And another problem is that if you do not monitor the milking condition and do not cut off the power after the milking is completed, the heater and the motor continue to operate and the power is wasted, as well as causing the breaker in the milking machine due to the overheating of the heater.

Therefore, the main object of the present invention is to maintain the milking cylinder at the optimum milking temperature at all times during the milking start or during milking, to increase the milking rate and the quality of the milked milk, and to overload and milk the motor. It is to provide a control device of the milking machine for controlling the milking process to prevent the closing of the inlet.

Another object of the present invention is to provide a control device of the milking machine that automatically cuts off the driving power of the heater and the motor when the milking is completed.

Still another object of the present invention is to provide a control circuit of a milking machine that detects an overcurrent flowing in a motor and controls to automatically cut off driving power of the motor and the heater.

Still another object of the present invention is to provide a milking machine control device for controlling a supply power so that the milking machine can also be used as a power source of 100V and 220V.

The control device of the milking machine of the present invention for achieving the main object of the present invention, the input detection means for detecting whether or not the milking object such as sesame in the milking machine, the temperature detecting means for detecting the temperature of the milking cylinder, and the milking cylinder And a heating means for heating, a motor power switching means for switching a power supply of the motor, and a microprocessor connected to each means, wherein the microprocessor processes the outputs of the input detecting means and the temperature detecting means, And an output signal for controlling the driving of the corresponding heating means and the motor power switching means.

According to the control device of the milking machine of the present invention, when the milking machine is powered on, the built-in program of the microprocessor checks whether the sesame is inserted into the inlet through the input detecting means before the milking machine starts. If it is not found, it waits and checks, and if it is detected that the sesame is put in the inlet, the heating means is driven to preheat the milking cylinder to the appropriate temperature for milking and at the same time through the temperature detecting means, and the preheating is completed. Milking is started by operating the motor through the power switching means.

Even during milking, the built-in program of the microprocessor continuously checks whether the milking cylinder is maintained at the proper temperature through the temperature detecting means, and controls the driving of the heating means to maintain the proper temperature.

Therefore, during the start of milking or during the milking process, the milk is always milked at the optimum temperature, so milking rate is high and milking can be performed with high quality, and no stopping of the motor or closing of the feeding port occurs. In addition, the microprocessor, which always checks the feeding state of the inlet inlet, if there is no inlet in the inlet, waits until the sesame seeds in the milking cylinder are completely milked and discharged the ink, that is, until the milking is completed. And since the driving power of the heater is automatically cut off can prevent the waste of power.

In addition, the present invention connects a trigger synchronization circuit, a 100V / 220V power supply detection circuit and a 100V / 220V motor step switching circuit to a microprocessor, and detects whether 100V or 220V is detected through the 100V / 220V power supply detection circuit before milking starts. The tap switch of the motor tap switching circuit is switched, and the above-mentioned heating means applies only one cycle for every five cycles of the power supply voltage at the time of power supply of 220V, and applies only one cycle every 5 cycles of the power supply voltage at the power supply of 100V. By configuring the voltage processor synchronizing circuit to incorporate the program of the microprocessor to synchronize the trigger point of the heating means to be triggered at the zero cross point, the milking machine can also use both 100V / 220V, more preferably the object of the present invention is realized. .

In another aspect, the present invention is provided with a motor over-current detection circuit for detecting the over-current of the motor connected to the microprocessor, and when the over-current flows to the motor, the microprocessor to stop the driving of the motor and the heating means through the motor power switching means It is possible to automatically stop the operation of the milking machine in the event of an abnormality by incorporating the program, thereby making the object of the present invention more preferably realized by preventing the occurrence of a larger failure of the milking machine.

In the present invention, if the temperature detecting means and the motor power switching means is configured to connect to the preheating temperature increase circuit, when the preheating of the milking cylinder is completed before starting milking, the preheating temperature is higher than the proper temperature of the milking cylinder during milking, Since a smaller load is applied at the time of starting the motor, the starting is performed well and the object of the present invention is advantageously realized.

In addition, in the present invention, circuits for displaying the operating states of the milking machine, that is, the state of standby, preheating, operation, abnormality, and 100V / 220V power supply, etc., can identify each operating state during milking. By doing so, the present invention can be realized even better.

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described in detail the present invention.

1 is a schematic diagram of a milking machine connected to the control device of the milking machine of the present invention, and FIG. 2 is a circuit diagram showing an embodiment of the milking machine control device according to the present invention. ) Connects the resistor (R ₅ ) and the LED element (D ₁₁ ) in series, bridges the resistor (R ₆ , R ₇ , R ₈ ) and photodiode (D ₁₂ ) in parallel, and converts its output into a comparator IC ( It is configured to connect to the input terminal of IC ₁ ) and to connect the output of this IC (IC ₁ ) to pin 5 of the microprocessor 153, wherein the LED element (D ₁₁ ) and the photodiode (D ₁₂ ) are inlet of the milking machine. When the sesame is injected into the 121, the light emitted from the LED device D ₁₁ is blocked, and the photodiode D ₁₂ is turned off so that the photodiode D ₁₂ is turned off. In the embodiment, the microprocessor used COM 420L manufactured by National Corporation.

The temperature detection circuit 151 which detects the temperature of the milking cylinder 117 of the milking machine bridges the resistors R ₁ , R ₂ , R ₃ and the thermistor Th ₁ of the negative temperature characteristic and compares the output thereof. connected to the input terminal of the IC (IC ₂₎ and the output of the IC (IC ₂₎ has been configured to be connected to the pin 6 of the microprocessor 153, the deoeo Mr (Th ₁₎ is a milking machine milking cylinder 117 of the It is installed in the milking machine so that the groove is inserted into the groove. Therefore, when the temperature of the milking cylinder 117 of the milking machine rises to an appropriate set temperature, the output of the comparison IC (IC ₂ ) outputs a low level, that is, 0 (hereinafter referred to as low level 0) and is below the set temperature. Outputs a high level, i.e., 1 (hereinafter referred to as high level 1).

In the heating circuit 152 for heating the milking cylinder 117, the triac TRIAC1 is connected to the heater Hi, and the gate of the triac TRIAC1 is connected to the transistor Q ₁ and the resistor R ₉ . The base of the transistor Q ₁ is configured to be connected to pin 14 of the microprocessor 153 through a resistor R ₉ ′, and the heater Hi is connected to a milking machine. It is wound around the outer periphery of the milking cylinder 117. Therefore, the trigger of the triac (TRIAC) is controlled by the signal appearing on pin 14 of the microprocessor 153.

The motor power switching circuit 154 for switching the power of the motor M connects the triac TRIAC2 to the supply power line of the motor M, and through the transistor Q ₄ and the resistor R _{20 at} its gate. It is connected to the DC power supply VDD and is connected to pin 15 of the microprocessor 153 through the resistor R _{19 at} the base of the transistor Q ₄ , and outputs to pin 15 of the microprocessor 153. The trigger of the triac TRIAC2 is controlled according to the signal.

Also, a power supply voltage detection circuit 158 for detecting a power supply voltage of 100V / 220V and a trigger synchronization circuit for triggering the heating circuit 152 at a zero cross point so that the milking machine can be combined with a power supply of 100V / 220V. 159 and a tap switching circuit 155 for switching the 100V / 220V tap of the motor M are provided.

The power supply voltage detection circuit 158 is grounded by connecting the resistors R ₁₁ and R ₁₃ to the voltage VA on the input side of the constant voltage generation circuit CVG, and at the same time, the DC constant voltage VDD on the output side of the constant voltage generation circuit CVG. ), the resistance (R _12, R and connected to the ground _14), the resistor (R _11, R ₁₃₎ and a resistor (R _12, sikimyeo connected to the input side of the comparing IC (IC₃) for each connection point of the R ₁₄₎ The output of the IC (IC₃) is configured to be connected to pin 23 of the microprocessor 153. When the power supply voltage is 100V and 220V, the DC constant voltage VDD is constant but the DC voltage VA is 220V. Since the voltage is about twice the voltage at 100V, the output of the comparator IC (IC ₃ ) is 1 at 220V power supply, but at 110V depending on the setting of the resistors (R ₁₁ , R ₁₂ , R ₁₃ , R ₁₄ ). It becomes zero.

In addition, the trigger synchronization circuit 159 has a transistor Q₂ connected between pin 24 of the microprocessor 153 and ground, and a base thereof is connected to a power supply voltage through a capacitor C ₁ and a resistor R ₂₁ . A synchronization signal is applied to the microprocessor every cycle of the power supply voltage. The tap switching circuit 155 is connected to one side of a relay Ry for switching between a 100V power tap (connected to contact B of relay) and a 220V power tap (connected to contact A of relay) of motor M. power source (BB) terminal a, the other side (CC) of a transistor (Q ₃₎ to the ground via the respective connection, and at the same time the base of the transistor (Q ₃₎ is a resistor (R _22), 17 times of the microprocessor 153 via a pin It is configured to be connected to.

In addition, an overcurrent detection circuit 157 for detecting an overcurrent of the motor M is connected in the event of an abnormality of the milking machine, which is connected to the detection coil L ₁ for detecting the induced current in the power supply line of the motor M. (D ₁₀₎ and a capacitor (C ₃₎ to connect to and to form a closed circuit, a capacitor (C ₃₎ to a resistor (R ₁₇₎ and another resistor _{(R 15, R 16, R} 17) connected in parallel with the bridge connection And its output is connected to the input of the comparison IC (IC ₄ ), and the output of the IC (IC ₄ ) is connected to pin 22 of the microprocessor 153. The current corresponding to the overcurrent is detected by the induction coil (L ₁ ), which is charged to the capacitor (C ₃ ) through the diode (D ₁₀ ), so that the IC (IC ₄ ) generates an output of 1.

In addition, a display circuit 160 for displaying various milking conditions of the milking machine is connected, and the 100V power display is an LED (D ₄ ) connected to pin 12, and the 220V power display is an LED connected to pin 13 (D ₅ ), Yes display is LED (D ₆ ) connected to pin 28, Operation display is LED (D ₇ ) connected to pin 27, Standby display is LED (D ₈ ), It is configured to be displayed by LED (D ₉ ) connected to pin 25, respectively.

In addition, between the temperature detection circuit 151 and the motor power switching circuit 154, the preheating is formed of a resistor (R ₁₀ ) and a diode (D ₂₀ ) to allow the preheating temperature to be higher than an appropriate setting temperature only during the start of milking. The temperature rise circuit 161 is connected.

In addition, a detection circuit 156 for detecting whether the oil sump 113 and the ink sump 114 is inserted into the milking machine is connected, and the magnet switch MSW is installed to be connected between pin 21 and the ground. The magnet switch is operated to be in an off state when the oil sump 113 and the ink sump 114 are inserted.

164 is a well-known constant voltage circuit, 162 is a pulse generator, 163 is a circuit for supplying a predetermined pulse to the microprocessor 153, 163 is a reset circuit of the microprocessor 153, 111 is 윔, 112 is 112 The gear, 119 is the transfer skew, 115 is the oil outlet and 116 is the ink outlet.

The operation of the controller of the milking machine of the present invention configured as described above will be described.

It will be described in detail with reference to the flow chart showing the operation of the control device of the milking machine according to the first, second, and the present invention.

When the power is turned on, the microprocessor 153 is driven first, and by the program written in the microprocessor 153, the microprocessor 153 stores the mode 3 and outputs 0 to pin 26 to display it. The LED D ₈ of the circuit 160 is driven to display the standby state. After that, it is checked whether the output of the power supply voltage detection circuit 158 is 1 through pin 23, and if 1 (220V), 1 output is generated at pins 13 and 17, respectively, and the display circuit 160 By turning on the LED D ₄ and the transistor Q ₃ of the tap switching circuit 155, 220V power is displayed and the tap of the motor M is switched to the tap for 220V power. However, if pin 23 confirms that 1 is not input (in case of 100V), outputs 1 and 0 are generated on pins 12 and 17, respectively, so that 100V power is displayed and at the same time, transistor Q of the tap-changer circuit 155 is provided. ₃ ) is turned off, and the tap of the motor M is connected to a tap for a 100V power supply.

After that, check whether the input state of pin 21 is 1 (If the oil container and the oil container are inserted, the magnetic switch (Msw) is turned off and becomes 1) .If it is not 1, the mode 3 is memorized. 0 outputs to the pin, return the tap to the 100V power supply tap, and continue to drive the LED (D ₈ ) (Standby Status Indicator), then return to step 23 again and return to The process is repeated until the oil container 113 and the ink container 114 are inserted until the output of pin 21 becomes 1. Then, when the output of pin 21 becomes 1, the mode 3 is stored in the program, so the mode 3 is selected and the microprocessor 153 operates as the mode 3 (Fig. 3b).

로 분주되고, 트리거 동기회로(159)에 의하여 동기된 펄스출력을 발생하도록하여 트라이액(TRIAC1)을 제로크로스점에서 트리거 시키도록하여 착유실린더(117)를 예열시키며, 만약 0이 확인되면 전원 주파수의 전싸이클 구간에서 트라이액(TRIAC1)이 트리거 되도록(이때도 제로크로스점에서) 14번 핀에 분주되지 않은 펄스신호를 발생시키며, 이와같은 과정은 반복되어 예열이 완료될때까지 진행된다.In the process of mode 3, first check whether the input of pin 5 is 1. At this time, when the inlet 121 is inserted into the sesame seeds photodiode (D ₁₂ ) is turned off as described above, the output of the comparison IC (IC ₁ ) is 0, the photodiode is turned on if the sesame is not injected for comparison The output of IC (IC ₁ ) is 1. Therefore, if the sesame is not inserted into the inlet 121, the process so far is repeated until the sesame is put, that is, until the input of pin 5 becomes zero. The seeds are added when the zero input of the 5 pin modal stored in the modal one program to 3 instead of at the same time as zero is output to 28 times, 26 times, pin 1 is output LED (D ₆₎ to display the pre-heating state Instead it is driven. Afterwards, the process of checking pins 23 and 21 is repeated to select mode 1. In Mode 1 (Fig. 3c), it is again checked whether the input of pin 5 is 1, and if it is not 1 (if the 1 is repeated, the above-described case is checked), it is checked whether the input of pin 6 is 1. (The milking cylinder 117 is not preheated, so at this time, the thermistor (Th₁) has a large resistance value, so that the output of IC (IC₂) is 1 and the input of pin 6 is also 1). Jump to the heater (Hi) overheating process through the path indicated in the double TRC (Fig. 3 d). Then, check whether the input of pin 23 is 1 (as described above, if the power supply voltage is 220V), the output of IC (IC₃) is 1, and if the 100V is IC, the output of IC (IC₃) is 0. If it is determined to be 1, pin 1 is triggered so that the triac (TRIAC1) of the heating circuit 152 is triggered only once every 5 cycles of the power frequency.

The milking cylinder 117 is preheated by generating a pulse output synchronized with the trigger synchronizing circuit 159 to trigger the triac TRIAC1 at the zero cross point. A pulse signal that is not divided on pin 14 is generated so that the triac (TRIAC1) is triggered (also at zero cross point) in the entire cycle of, and the process is repeated until the preheating is completed.

When the preheating is completed, since the resistance value of the thermistor Th₁ of the temperature detection circuit 151 falls below a predetermined value, the IC (IC₂) is inverted to generate an output of 0, which is directly input to pin 6, The microprocessor 153 memorizes the mode 2, and outputs 1 and 0 signals to pins 28 and 27, respectively, to drive the LED D ₇ indicating the operation status. On the other hand, if it is not yet driven (that is, not milked), the output of pin 15 becomes zero, so the diode D ₂₀ of the preheat temperature rise circuit 161 is turned on, so that the resistance R₃ of the temperature detection circuit 151 is conducted. ) And the resistance (R ₁₀ ) of the preheating temperature raising circuit 161 are connected in parallel, thereby lowering the reference level voltage of the IC (IC₂), thereby increasing the temperature and increasing the resistance of the thermistor (Th₁). IC (IC₂) is not reversed until it is lowered, and during preheating, the milking cylinder 117 is preheated to a temperature higher than the proper temperature, which lowers the viscosity of partially milked milk at the start of milking. This makes it possible to further prevent overloading during the startup of the motor M. FIG. However, as soon as the motor M is driven, the diode D ₂₀ is cut off (in this case, since pin 15 is in a state 1), the milking cylinder 117 returns to an appropriate temperature during milking.

Then it is returned to the KA of FIG. 3 a again and selected as mode 2 (since it is stored as mode 2 in the previous process). In the mode 2 process (FIG. 3 d), first, the overcurrent detection circuit 157 is used. In order to check whether an overcurrent is flowing to the motor (M) due to an abnormal condition, check whether the input of pin 22 is 1 and confirm it as 1, and when it is in an abnormal state, the LED element (D ₉ ) lights up and displays it. If the input of pin 22 is not 1 because it is not an abnormal state, it outputs 1 to pin 15 to drive the motor (M).

After setting the timer to zero through the process of checking that there is a crack in the inlet 121, and again check the temperature of the milking cylinder 117 through the temperature detection circuit 151 apart from the proper temperature, if it is heated again When the circuit 152 is driven to maintain the proper temperature at all times and an abnormality occurs during milking and an overcurrent flows in the motor M, the input state of pin 22 connected to the output of the overcurrent detection circuit 157 is checked and the motor Stop (M) and drive LED (D ₉ ) to indicate occurrence of abnormal condition. Repeatedly repeating this process, if there is no crack in the inlet 121, 1 is output to pin 5 by the input detection circuit 150, so the microprocessor checks this until 20 seconds have elapsed (which is not broken in the inlet) After the sesame oil in the milking cylinder 117 is fully milked and the ink is discharged, the time can be adjusted accordingly.) After 20 seconds have elapsed after the above process is repeated, the motor (M) is stopped and the air is waiting. The LED (D ₈ ) indicating the state is driven to indicate that the air is waiting, and the mode 3 is stored so as to wait for the next milking or to turn off the milking machine by manually turning off the power supply.

As described above, the control device of the milking machine according to the present invention, the power is turned on, the milking and lowering the sesame put into the sucker filled with sesame in the inlet 121, the oil sump 113 and the ink barrel 114 is Once inserted, the state of the microprocessor 153 is checked in accordance with the built-in program, and the drive signal is generated in the heating circuit 152 by checking the preheating temperature of the milking cylinder 117 through the temperature detection circuit 151. When the temperature is reached, the motor is rotated by the driving of the motor (M) power supply switching circuit 154 to start milking, and during milking, the temperature of the milking cylinder 117 is appropriate for milking through the temperature detection circuit 151. It checks whether the temperature is set to the temperature, and maintains it at the proper temperature.When the inlet of the sesame is finished, it is detected and waited until the sesame oil in the milking cylinder 117 is completely milked and the ink is discharged. Since the motor (M) and the heater (Hi) are stopped, milking is always performed at the optimum temperature during milking or during milking, so milking becomes high and milking can be made with high quality. Since overheating is prevented, the burnout of the motor M and the closing of the inlet are not generated, and when the milking is completed, the driving of the motor and the heater is automatically stopped to prevent waste of power.

구간에만 통전토록 하여 가열회로(152)를 구동시켜줄 뿐만아니라(220V 전압을 동일 부하(저항)에 인가하였을때 100V 전원 전압을 인가하였을 때보다 그 소비전력은(2.2)²=4.84÷5배임) 트리거 동기회로(159)의 동기신호에 의하여 가열회로(152)를 제로크로스점에서 트리거시키게 되므로, 별도의 전원 공급 장치의 설치없이도 100V/220V 전원을 겸용할 수 있을 뿐만 아니라 트리거도 정확하고 용이하게 이루어진다.In addition, the present invention includes a power supply voltage detection circuit 158, a trigger synchronizing circuit 159, and a tap switching circuit 155 of the motor to detect the power supply voltage at the time of the 100V / 220V power supply and automatically tap the motor. At the same time the 220V power is supplied to the heater Hi.

In addition to driving the heating circuit 152 by energizing only the section (when 220V voltage is applied to the same load (resistance), its power consumption is (2.2) ² = 4.84 ÷ 5 times than when 100V power voltage is applied). Since the heating circuit 152 is triggered at the zero cross point by the synchronization signal of the trigger synchronization circuit 159, it is possible to use a 100V / 220V power supply without installing a separate power supply device, and also to trigger the trigger accurately and easily. Is done.

In addition, since the present invention sufficiently preheats the milking cylinder 117 before milking starts, there is no fear that overcurrent due to overload flows to the motor, but the overcurrent detecting circuit 157 is provided to further improve the integrity, thereby causing other causes. When the over current flows, the power of the motor (M) is immediately cut off, and thus it is possible to almost completely prevent the occurrence of a failure such as a burnout of the motor.

In addition, since the milking state of the milking machine is displayed by the display circuit 160, it is very easy to handle the milking machine, and in case of abnormality, it is possible to immediately take appropriate measures. In addition, since the preheating temperature raising circuit 161 is provided so that the preheating temperature can be set higher than the temperature during milking during preheating, it is possible to smoothly start the motor M and prevent overloading during starting.

In addition, the control circuit of the milking machine of the present invention does not need to install and operate a separate switch other than the power switch because the control circuit of the milking machine is automatically operated by the program of the microprocessor 153 when the power is turned on. There is an excellent effect.

Although the present invention has been described in detail with reference to one preferred embodiment of the present invention, detailed changes or modifications can be made without departing from the scope of the technical spirit indicated in the claims of the present invention. For example, in the present invention, the temperature detecting means uses a negative characteristic thermistor, which is replaced with a positive characteristic thermistor, and the program of the microprocessor is modified so as to correspond thereto, or the connection of the reference level means of the comparative IC is slightly reduced. If modified and connected, the same function can be performed, and if the logic state of the signal input or output to each pin terminal of the microprocessor is different, the same function can be performed by changing the program of the microprocessor accordingly. It is also obvious.

Claims (7)

Input detection means for detecting whether milk is inserted into the milking machine, temperature detection means for detecting the temperature of the milking cylinder, heating means for heating the milking cylinder, motor power switching means for switching the power of the motor, and And a microprocessor connected to each of the means to process outputs of the input detecting means and the temperature detecting means to generate an output signal for controlling the driving of the heating means and the motor power switching means. Control of the milking machine. The method of claim 1, wherein the input detecting means is provided with an LED (D ₁₁ ) and a photodiode (D ₁₂ ) in the input port 121, the series circuit of the LED (D ₁₁ ) and the resistor (R ₁₅ ) And resistors (R ₆ , R ₇ , R ₈ ) and the bridge circuit of the photodiode (D ₁₂ ) are connected and their outputs are connected to the microprocessor via IC (IC ₁ ), and the temperature detecting means is milked. A control device for a milking machine characterized in that it is configured to bridge-connect a cylinder-integrated demister (Th ₁ ) and resistors (R ₁ , R ₂ , R ₃ ) and its output to an microprocessor through an IC (IC ₂ ). A power supply voltage detection circuit 158 for detecting a power supply voltage, a trigger synchronization circuit 159 for triggering and driving the heating means at a zero cross point, and a motor according to claim 1 or 2, The control device of the milking machine characterized by adding a tap switching circuit (155) for driving tap switching. The method of claim 3, wherein the power supply voltage detection circuit 158 includes a resistor (R ₁₂ , R ₁₄ ) and a resistor for changing the DC constant voltage source (VDD) and the DC voltage (VA) corresponding to a change in the power supply voltage. (R ₁₁ , R ₁₃ ), each of which is configured to connect its output to the microprocessor 153 through an IC (IC ₃ ), wherein the trigger synchronizing circuit 159 supplies a resistor (R ₂₁ ) and a capacitor to a supply power source. The transistor Q ₂ is connected to the base of the transistor Q ₂ through C _1, and the transistor Q is configured to be connected between the ground and the microprocessor 153, and the tap switching circuit 155 is connected to the relay Ry and the ground. And a transistor (Q ₃ ) between and a base thereof connected to the microprocessor (153) through a resistor (R ₂₂ ). The high current detection unit (L ₁ , D ₁₀ , C ₃ , R ₁₇ ) and the resistors (R ₁₅ , R ₁₆ , R ₁₈ ) for detecting an overcurrent of the motor (M) are connected by a bridge circuit. And a motor overcurrent detection circuit (157) configured to connect its output to the microprocessor (153) via an IC (IC ₄ ). 6. The preheating temperature raising circuit 161 is added between the output side of the bridge circuits R ₁ , R ₂ , R ₃ , Th ₁ of the temperature detecting means and the input side of the motor power switching means. Controller of milking machine. 7. The power supply voltage display circuits D ₄ and D ₅ , the preheating display circuits R ₂₃ and D ₆ , the operation display circuits R ₂₄ and D ₇ , and the standby display circuits R ₂₅ and D ₈ . And a display circuit (160) formed of an abnormality confirmation display circuit (R ₂₆ , D ₉ ) in addition to the microprocessor (153).

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