KR850001837B1 - Control circuit in vending m/c - Google Patents

Abstract

A controller for vending machines, especially for instant ramen, includes a microprocessor comprising a CPU (1), a PROM (2), 3 interface adapters (3,4,5), a chip-selection decoder (CS), and a power supply(21). The adapter (3) is concerned with the status of the hot water the moving parts, and the selling prices. The adapter (4) is concerned with signals from the CPU, and the adapter (5) is concerned with a coin processor and a melody generator. A controller (36) for hot water and chop-sticks is connected to the power supply (21).

Description

Control device of vending machine

1 is a schematic diagram of the present invention.

2 is an embodiment of the present invention.

3 is a flow chart of the present invention.

4 is a schematic view of each drive unit according to the invention.

* Explanation of symbols for main parts of the drawings

1: Central processing unit. 2: Program Rom.

3,4,5: Interface Adapter

6,8,16: Multiplexer.

7,9,10: BUFFER 11,12,13: Triac control part.

14: coin processing device. 15: Decoder.

17: display device. 18; Segment Decoder.

19: Melody generator. 20: Speaker.

21: power supply. 22: Schmitt trigger inverter.

23: 2-input P NAND gate. 24: 4-wire decoder.

25: inverter oscillation circuit. 26: tires.

27: transport device. 28: Ramen box.

29: lifting device. 30: hot water bath.

31: hot water injector. 32: Ramen outlet.

33: discharge door. 34: chopsticks discharge device.

35: chopsticks. 36: hot water and chopsticks discharge control unit.

37: Chopsticks Stack. 38: chopstick outlet.

J ₁ -J ₄ : Connector. T ₁ -T ₄ : Terminals.

SL ₁ -SL ₁₄ : Solenoid.

OI ₁ -OI ₂₅ : Opto Isolator.

TA ₁ -TA ₃₁ : triac. HT ₁ , HT ₂ : Hier.

SW ₁ -SW ₁₆ : I / O switch. M ₁ -M ₅ : motor.

L ₁ -L ₄ : lamps. CS: Sunchip Tack Decoder.

P ₁ -P ₄ : Photo sensor. BS: BCD circuit for selling price.

TDR: Time delay relay. CB: Circuit Breaker

The present invention relates to a control device of a vending machine that performs a sales function by injecting hot water into an instant food made by embedding an instant ramen or the like in a short time when hot water is poured into the cup or bowl-shaped container.

In general, the vending machine can be classified into a device that sells a sealed finished product and a device that sells a mixture of water and powdered raw materials. The latter is a multi-stage device such as procurement, maintenance of a constant water temperature, or control of mixing. Intermediate processes require more sophisticated and sophisticated controls than finished vending machines.

In particular, there are many commercial instant noodles (hereinafter called ramen noodles) that can be cooked immediately by pouring hot water into a cup or bowl-shaped container. Could not expect any other effect than just purchasing goods.

If the instant cooking characteristics of the instant ramen embedded in the container is used inside the vending machine and sold to the buyer, the sales volume of the product can be increased, and the efficiency and reliability of the vending machine itself are expected to be improved. To this end, in addition to the conventional coin handling device, processes such as controlling the temperature of the injected hot water, controlling the transfer device and the elevating device, controlling the discharge of auxiliary products such as chopsticks, controlling the hot water injection, and controlling the progress of each inside of the device are performed. It is necessary to do

The present invention uses a microcomputer to effectively control each drive unit of an instant noodle vending machine incorporated in the above-described sub-singular container, and this reduces the processing speed of the conventional relay control device and inefficiency in repair work. It improves the efficiency of the above-mentioned ramen vending machine and improves the efficiency of the above-mentioned ramen vending machine by improving the altar point such as sex, short life and by using the program changeable characteristics. The purpose is to promote the development of various vending machines and the improvement of added value.

FIG. 1 is a schematic diagram of the present invention, and FIG. 2 illustrates an embodiment of the present invention specifically based on FIG. 1. The circuit binding state will be described in detail with reference to the two drawings.

The microcomputer, which is the main control function, includes a central processing unit (1) with a built-in RAM, erasable program ROM (2), and three interface adapters (3) (4). And a chip line tap decoder (CS) composed of a two-input P NAND gate 23 and a four-wire decoder 24 between the central processing unit 1 and the peripheral signal path. On the input side of 3), the multiplex 6 and the buffer 7 and the selling price setting BCD circuit (BS) for transmitting the presence or absence of hot water, the temperature of the hot water, the operation state of various goods conveying devices, etc. to the central processing unit (1). A multiplexer 8 is provided for transmitting the state of the to the central processing unit 1.

On the output side of the other interface adapter 4, the driving motors (M ₁ -M ₅ ), solenoids (SL ₁ -SL ₆ ) of the various driving apparatuses, and the lamps (L _1- L ₄ ) for displaying the operation state have a central processing unit ( A buffer (9) 10 and a triac control unit (11) (12) for transmitting the control signal of 1) are provided, and the dual triac control unit (11) (12) is an opto-isolator for insulation (OI _1- ). OI ₁₇ ) and triacs (TA ₁ -TA ₁₇ ) are installed corresponding to each output stage.

The interface adapter 5 includes a decoder 15, a triac controller 13 equipped with an opto-isolator OI ₁₈ -OI ₂₅ and a triac TA ₁₈ -TA ₂₅ , and a solenoid SL ₇ -SL _14. The coin processing device 14 constituted of) is sequentially installed, and on the other side of the interface adapter 5, the multiplexer 16 for transmitting the coin processing signal from the coin processing device 14 to the central processing unit 1. On the other side, a segment decoder 18 and a melody generating device 19 for driving the display device 17 displaying various states are installed on the outside of the vending machine, and a power circuit breaker CB and time On the one side of the power supply device 21 for supplying power to each of the circuit unit and having a delay relay (TDR) is a hot water and chopstick discharge control unit for adjusting the amount of hot water and the temperature of hot water, hot water injection and chopstick discharge ( 36) is installed.

In Figs. 2 and 4, reference numeral 20 denotes a speaker, 22 a Schmitt trigger inverter, 25 an inverter oscillator circuit, 26 a timer, 27-34 a mechanical drive, 35 a chopstick, 36 a hot water and The chopstick discharge control unit, 37 denotes a chopstick loading box, and 38 denotes a chopstick outlet.

4 is a simplified view of a mechanical drive device operating under the control of the present invention having the above-described structure. When the ramen drops from the ramen storage box 28, they are lifted by the transportation device 27. And the elevating device 29 lifts the conveyed ramen to the ramen outlet 32 located above.

The ramen dropped into the ramen outlet 32 is injected with hot water contained in the hot water tank 30 by the hot water injector 31, and at this time, the chopstick discharge device 34 is operated to supply the chopsticks 35 to the outside. After the hot water injection is finished, the discharge door 33 is opened, so that the buyer is immediately supplied with the ready-made ramen.

The operation of the present invention for controlling the mechanical drive is performed based on the signal flow sequence of the flowchart shown in FIG. 3, and the contents stored in the program ROM 2 of the microcomputer also process the signal flow of FIG. I can do it.

The operation between the peripheral circuits including the microcomputer is performed as follows.

When the power supply 21 is turned "on", a current flows through the coil of the time delay relay TDR, and the contacts on the device side are connected.

Therefore, the power from which the surge component is removed by the delay of the magnetization time is transmitted to the mechanical drive side, and the DC power rectified by the power supply 21 is transferred to the control circuit side.

Here, the timer 26 also protects the various control circuits by temporarily delaying the initial overcurrent voltage from being supplied to the non-active ratio. When all the power is safely turned on, the CPU 1 checks whether the RAM is abnormal. If any abnormality is found in the RAM inspection, all devices stop operating. If no abnormality is found, the next control element is checked.

In other words, the switch (SW _1- SW ₁₆ ) installed in the connector (J ₁ ) and the connector (J ₄ ) is extended from each drive device to check the first, the amount of hot water and the water temperature of the hot water tank (30) And the presence or absence of change is checked by a switch SW ₁₀ (SW ₉ ) (SW ₁₁ ).

That is, the switch SW ₁₀ is connected to a float attached to the hot water tank 30 shown in FIG.

Accordingly, the input terminal I ₆ of the multiplexer 6 becomes low level and is selected by the selection signals S ₀ -S ₂ from the interface adapter 3 and the central processing unit 1 is output via the output terminal Z. The lack of hot water is conveyed. When the central processing unit (I) detects the lack of hot water signal, it generates a stop signal for sale.

This stop signal is transmitted to the opto-isolator OI ₁₃ of the triac control unit 12 through the interface adapter 4 and the butter 10 to " turn on " the triac TA ₁₃ .

Therefore, AC operating power from the power supply 21 is applied to the lamp L ₂ through the terminal T ₂ to illuminate the "(Stop)" indicator.

Here, the opto-isolator (OI ₁ -OI ₂₅ ) serves to insulate the inactive part on the central processing unit 1 side from the live part on the driving device side, and the lamp (L ₂ ) is installed outside the vending machine so that when the lamp is turned on, the buyer recognizes the sale stop state of the vending machine.

When " (Stop Selling) " is displayed, the operation signal from the central processing unit 1 is not applied to each drive unit including the motors M ₁ -M ₅ and the selling function is stopped.

Switch (SW ₉₎ with a check of the whole quantity is there is to check the temperature of the hot water, a switch (SW ₉₎ are installed extending from the thermal element in the hot water tank 30, the temperature when the appropriate level or less in It is in the " ON " state, which is transmitted to the central processing unit 1 via the multiplexer 6 interface adapter 3 as in the case of checking the amount of hot water. Accordingly, the central processing unit 1 transmits a high level signal to the opto isolator OI ₁₃ (OI ₁₅ ).

The opto isolator (OI ₁₃ ) allows the AC operating power to be applied to the lamp (L ₂ ), which is the "(Stop)" indicator described above, and the opto isolator (OI ₁₅ ) is the lamp which is the "(temperature rising)" indicator ( L ₄ ) lights up.

This hot water tank 30 to keep the water temperature in the are that the self-operated by a heat sensitive device which is provided in the central processing unit (1) outside the control of the heater (HT ₁₎ (HT ₂₎ and the hot water tank, only one end of the heat sensitive device is to communicate to the switch (SW _9).

With the above-mentioned hot water quantity and temperature check of the hot water, the presence or absence of change is also checked. This check of the change is the state of the switch SW ₁₁ extending from the coin treatment device 14 to the connector J ₄ . It is carried out by inspection.

In other words, if there is no change, the switch SW ₁₁ is turned "off", whereby the input terminal I ₂ of the multiplexer 16 is at a high level so that the selection signal A ₅ -A ₈ from the interface adapter _{5 is} changed. ), The signal is output to the output terminal A ₉ and transmitted to the central processing unit 1 through the interface adapter 5.

When the central processing unit 1 receives the detection signal of the change member, the opto-isolator (OI ₁₂ ) side of the triac controller 12 receives an operation signal for operating the lamp L ₁ , which is a "(no change)" indicator. To apply.

If any one of the above three factors such as the amount of hot water, the temperature of the hot water, and the change is abnormal, the lamps L ₁ , L ₂ , L ₄ are turned on and the interface adapter 5 is supplied from the central processing unit 1. A signal for displaying a decimal number of "(ψψψ)" is output to the segment decoder 18 via. This signal is "on-off" at approximately 0.5-second intervals by an internal program so that the number displayed on the display device 17 flashes, which allows the vending machine operator to easily distinguish out-of-sale elements. It is to.

Here, the segment decoder 18 for driving the display device 17 is connected with an inverter oscillation circuit 25 for outputting two pulse signals that are opposite to each other at a cycle of about 1 msec. The display from the central processing unit 1 is connected. When the data to be displayed on the device 17 is transmitted to the segment decoder 18 through the interface adapter 5, the segment decoder 18 is configured to have one of the two output signals of the inverter oscillator circuit 25 at a high level. 100 digits and 10 digits are displayed on the display device 17 and one digit is displayed on the display device 17 when another pulse signal of the inverter oscillation circuit 25 is at a high level. The display unit 17 continues to appear to be turned on.

Accordingly, the number of output ports of the interface adapter 5 for the display device 17 can be reduced, and power consumption of the display device can be reduced.

When the coin is put under the display state of "(ψψψ)" as described above, an operation of returning the coin is performed, which sends an operation signal from the central processing unit 1 to the opto-isolator OI ₁₀ side and returns the coin solenoid ( By operating SL ₅ ).

When the check of the above three states is found to be normal, the central processing unit 1 sends an eye level signal to the opto isolator OI ₁₄ so that the lamp (L ₃ ) which is the "(on sale)" indicator lights up. do. At this time, the signal path becomes the central processing unit 1, the interface adapter 5, the opto isolator OI ₁₄ , the AC operating power, the triac TA ₁₄ , the terminal T ₂ , and the lamp L ₃ .

Thereafter, the check switch SW ₄ installed at the rear end of the transportation device 27 shown in FIG. ₄ is inspected, and when its state is "ON", the ramen is conveyed to the entrance of the lifting device 29. "OFF" indicates that there is no ramen at the entrance of the elevator 29, so that the "OFF" state of the switch SW ₄ is detected by the interface adapter 3 and the buffer 7 The central processing unit 1 sends a high level signal to the opto isolator OI ₃ side.

Therefore, the triac TA ₃ is “turned on” and the AC operating power operates the transportation motor M ₃ , so that when the transportation device 27 operates, the ramen is transported toward the lift device 29.

The operation signal path at this time is the central processing unit (1) → the interface adapter (4) → the buffer (9) → the opto isolator (OI ₃ ) → the AC operating power → the triac (TA ₃ ) → the terminal (T ₁ ) Becomes M ₃ .

If the switch SW ₄ is not turned "on" even after a certain time has elapsed after the AC operating power is applied to the motor M ₃ , that is, if it exceeds the prescribed value for the time stored in the RAM, This is due to the absence of ramen on the delivery device 28. At this time, the central processing unit 1 transmits a high level signal to the opto isolator OI ₄ side.

On the output side of the opto isolator (OI ₄ ), a gate driving solenoid (SL ₁ ) for opening the drop opening of the ramen loading box (28) is connected. When the ramen is dropped according to the operation signal from the central processing unit (1), the ramen is dropped. It is placed on the transportation device 27. At this time, the operation of the solenoid SL ₁ is stored in the RAM, and when the next ramen falls again, the gate driving solenoid SL ₂ → SL ₃ → SL ₄ goes to the central processing unit 1 in this order. Since the operating signal is applied from the ramen loading box so that the ramen 28 evenly falls.

If the contact switch SW ₄ is not turned “on” even after a predetermined time since the solenoid SL ₁ is operated as described above, this is due to the absence of ramen inside the ramen loading box 29. The central processing unit 1 transmits a high level signal to the lamp L ₂ through the interface adapter 4 and the buffer 10 so that the "(Stop)" indicator is turned on and the display unit 17 is lit. Applies a signal capable of indicating a number of "(22ψ)" to the segment decoder 18 so that the vending machine operator can easily recognize the discontinuation factor of the ramen member.

In addition, when the coin is introduced by the purchaser in the absence of the ramen state, the central processing unit 1 turns the coin return solenoid SL ₅ to "on" state, so all the coins are dropped into the coin return port. .

Thereafter, when the vending machine removes the stop factor and presses the recovery switch (SW ₃ ), the program of the program ROM (2) returns to the check state of the switch (SW ₉ ) (SW ₁₀ ) (SW ₁₁ ), that is, the initial operation switch The above process is repeated.

If there is ramen in the ramen loading box 28, the ramen is transported by the mailing device 27 and raised by the lifting device 29 to the middle part of the elevator.

At this time, a "(on sale)" signal is displayed externally by the lighting of the lamp L ₃ .

In the state where all the above-described processes are normally performed, the purchaser starts a general purchasing behavior, in which the final processing of the central processing unit 1 depends on the state of the switch SW ₅ located in the middle of the elevating device 29. .

That is, if the ramen is normally raised to the intermediate position of the elevating device 29, the switch SW ₅ is in the "off" state and the following process is performed.

Thereafter, when the buyer presses the return switch SW ₂ installed outside the vending machine to randomly return the coins put therein, the central processing unit 1 according to the input amount recorded in the RAM, the coin processing device 14 The coin discharge signal is sent to the corresponding solenoid among the coin discharge solenoids (SL _11- SL ₁₄ ) of). If there is no return command in the same time to detect the amount of money put into the coin processing device 14 transmits the switch (SW ₁₎ to the buyer command to transmit the product-for detecting the "on-off" state, the transmission switch (SW ₁ Is detected in the RAM of the central processing unit 1 by the selling price setting BCD circuit BS at the front end of the multiplexer 8 when the central processing unit 1 detects the state " on " The amount of the coin to be compared is compared.

If the input amount is less than the selling price, the coin sorting and the carrying out of bad coins are continued. If the sending switch SW ₁ is turned on when the selling price is larger than the selling price, the central processing unit 1 performs the interface adapter 5; By applying the melody generating signal to the melody generating device 19 through the melody sound to the external speaker 20. This melody plays a role of informing the buyer that the sales dynamic is in progress, and the calculation and processing operation of the change proceeds while the melody is generated.

Here, the coin sorting operation and the coin purging operation are as follows.

When the coin is put into the vending machine, the type of coin is first detected by the photosensors P ₁ -P ₄ , and the detection signal is outputted according to the selection signal A ₅ -A ₈ of the multiplexer 16. A ₉ ) is output to each of the central processing unit 1 through the interface adapter (5).

The central processing unit 1 calculates and processes how many coins (500, 100, 50 and 10 won) are put in accordance with the input signal.

On the other hand, when the coin passes through the captive sensors P ₁ -P ₄ , the central processing unit 1 applies the coinized signal to the coined solenoid SL ₆ on the side of the terminal T ₂ to detect the coin as a bad coin. Stay in position.

Subsequently, the central processing unit 1 sends out a signal for operating the coin detection motor M ₅ to identify various characteristics of the coin, and if the coin is bad according to the judgment, the solenoid for returning the coin SL ₅ is removed. Operate.

If the coin is satisfactory, the coin is introduced through the sorting passage of the coin processing device 14, and the coin input into the sorting passage causes the switches SW _{13 to} SW ₁₆ to be "on" according to the type of coin, respectively. SW ₁₃ ) detects 500 won coins, switch (SW ₁₄ ) 100 won coins, switch (SW ₁₅ ) 50 won coins, switch (SW ₁₆ ) detects the input of 10 won coins, the central processing unit (1) In response to the detection signal, the coin loading solenoid SL ₁₀ (SL ₉ ) (SL ₈ ) (SL ₇ ) is operated so that the input coins are transferred to each coin loading sphere.

At the same time, the input amount of coins to be transferred is stored in the RAM, and the input amount is displayed in decimal in the display device 17.

On the other hand, if the amount of coins to be sold is more than the selling price and the limit of change, for example, the selling price is 250 won, two 100 won coins and six 10 won coins are put into RAM. In accordance with the addition of the stored coins, the central processing unit 1 turns the coin return solenoid SL ₅ "on" and transfers the coin to the coin loading port from the 260th coin or more to the coin holder. However, from the eighth coin, it is returned to the outside by the operation of the solenoid SL ₅ described above.

If the coin is more than the selling price and the limit is the change amount, that is, if one 500 won coin or three 100 won coins are transferred to the coin loading zone, the central processing unit 1 After comparing the selling price, in order to pay the difference, the emission signal is applied to the corresponding coin discharge solenoid (SL ₁₁ -SL ₁₄ ) so that the change of 10 won or 100 won is returned. The coin change light tablet at this time is in the order of a large amount to a small amount according to the change change signal of the central processing unit 1.

After the change is correctly discharged or when the initial input amount is equal to the selling price, the central processing unit 1 proceeds as follows.

That is, the lifting motor M ₄ is moved through the signal path of the interface 4 → buffer 9 → opto-isolator OI ₈ → AC operating power → triac TA _{8 of the} triac controller 11. By operating the ramen was located in the middle of the lifting device 29 as shown in Figure 4 moves the ramen outlet 32 located below the hot water injection device (31).

Contact switch (SW ₆ ) is installed at the bottom of the ramen outlet 32 to check whether the ramen is transported. If the contact switch (SW ₆ ) is not turned on even after a certain time, the ramen is in trouble during transportation. The central processing unit 1 checks the state of such a contact switch SW ₆ and turns on the "(Stop)" display lamp L ₂ , because it is caused by a factor. The coin processing device 14 transmits a digital signal capable of displaying the number (11 ψ) "to the segment decoder 18, while discharging the amount corresponding to the selling price of the selling price set BCD circuit BS. Authorization to the coin discharge solenoid (SL ₁₁ -SL ₁₄ ) of the to ensure that the input amount is returned to the buyer.

When the vending machine operator sees the "(11ψ)" mark on the display device 17, the vending machine 29 knows that a sale stop factor has occurred between the outlet 32 and the lift device 29. After removal, the return switch W ₃ connected to the connector J ₁ is pressed. In the central processing unit 1, when the return switch SW ₃ is turned "on" and the "(Stop)" indicating lamp L ₂ is applied, the transmission of the lighting signal is stopped and all processes are returned to the initial position. Return

When the operation of the lifting motor M ₄ is stopped again, the central processing unit 1 sends a high level signal to the opto isolator OI ₁ to operate the cam motor M _{1 again} . Let's do it.

On the shaft of the cam motor (M ₁ ), four cams are installed with a constant angle difference. The first cam drives the cam motor stop switch (SW ₈ ). When the four cams finish one rotation, the stop switch ( SW ₈ ) is turned on to stop the cam motor M ₁ drive signal transmission operation from the central processing unit 1.

The second cam is interlocked with the contact switch CS ₆ for driving the hot water replenishment motor M ₇ in the hot water and chopstick discharge control unit 36, and the third cam is for driving the chopstick discharge motor M ₆ . The fourth cam is interlocked with the contact switch CS ₃ , and the fourth cam is interlocked with the contact switch CS ₅ for driving the hot water discharge solenoid SL ₁₆ . Here, the refilling operation of the hot water is performed first, and when the cam motor (M ₁ ) starts the operation and the four cams start to rotate at the same time, the contact switch (CS ₆₎ interlocked with the second cam first according to the angle difference of each cam. ) Becomes the "on" state. Therefore, the triac TA ₂₉ "turns on" as the AC operating power is introduced, and the hot water replenishment motor M ₇ operates to replenish a predetermined amount of water in the hot water tank 30 to the top.

When the second cam is rotated by a predetermined angle, the contact switch CS ₆ is "off" and the operation of the hot water replenishment motor M ₇ is stopped. At this time, by the third cam Motor (M ₆₎ "on" the contact switch (CS ₃₎ for driving chopsticks discharged by turning on the triac (TA ₂₇₎ creates a Motor for chopsticks discharge (M ₆₎ with operating states Therefore, it is discharged to the outside of the chopsticks 35 in the chopsticks loading box 37 which is a part of the chopsticks discharging device 34. The chopsticks 35 are discharged while pushing the outlet 38 to the outside, the contact switch CS ₄ is installed in the chopstick outlet 38 is switched to the "off" state from the moment the chopstick outlet 38 is opened. .

In addition, as the triac TA ₂₇ is "turned on", the relay RY ₂ operates, and the contact RY _{2-1 of the} relay also maintains a connection state, so that the contact switch CS ₃ is prevented from rotating the cam. Even if it is "off", the triac TA ₂₇ continues to "turn on" unless the contact switch CS ₄ is "off" so that the chopstick discharging motor M ₆ performs continuous operation.

That is, the discharge operation is continued until the chopsticks 35 are discharged to the outside while opening the chopstick outlets 38. After the chopsticks 35 are discharged to the outside, the contact switch CS ₄ is "off", so that the relay RY ₂ is also in an inoperative state and the motor M ₆ is stopped, and the chopsticks 35 are made by the buyer. When this is completely taken out, the chopstick outlet 38 is closed by the spring.

Therefore, the discharge of the chopsticks 35 continuously is prevented.

The chopstick discharging device 34 can maintain the state of the chopsticks 35 hygienically and prevent waste more than necessary, compared to the external installation method of the chopstick storage box 37 because the position thereof is inside the vending machine.

After the third cam, the fourth cam switches the contact switch CS ₅ for operating the hot water discharge solenoid SL ₁₆ to the "on" state. From this, the triac TA ₂₈ connected to one side of the solenoid SL ₁₆ is turned on and the solenoid SL ₁₆ is in an operating state. Accordingly, the hot water injector 31 is pulled by the lever to the container. A hole in the lid of the built-in ramen is drilled and hot water is injected into the inside of the ramen embedded in the container.

The amount of hot water injected here is the time that the fourth cam rotates to maintain the contact switch CS ₅ on, and this time can be determined by adjusting the installation angle of the fourth cam.

At the moment when the fourth cam completes the hot water injection, the first cam causes the cam motor stop switch SW ₈ to be turned on to cause the central processing unit 1 to stop sending the operation signal to the cam motor M ₁ . do. Accordingly, the cam motor (M ₁ ) is to be stopped, the hot water replenishment, chopsticks discharge and hot water injection is made during one cycle of the first cam connected to the cam motor (M ₁ ).

Thereafter, the central processing unit 1 transmits a signal to the opto-isolator OI ₂ to operate the discharge door driving motor M ₂ .

Therefore, when the discharge door 33 starts to open and the discharge door 33 is fully opened, the opening confirmation switch SW ₇ installed in the discharge door 33 is in the "off" state, and thus the central processing unit 1 Stops transmitting the operation signal to the motor M ₂ .

When the purchaser takes out the ramen from the open discharge door 33, the contact switch SW ₆ located on the lower side of the ramen is turned off, and the central processing unit 1 waits for a while while confirming that the ramen has been completely discharged. After that, the operation signal is sent to the discharge door driving motor (M ₂ ) so that the discharge door 33 is closed.

When the discharge door 33 is completely closed, the open confirmation switch (SW ₇ ) is in the "on" state, the central processing unit (1) detects this and stops transmitting the operating signal to the motor (M ₂ ), at the same time, melody generated All sales processes are terminated by stopping the sending of the operation signal applied to the device 19.

On the other hand, the water temperature maintenance operation and the hot water replenishment operation and the hot water injection operation from the outside of the hot water and chopsticks discharge control unit 36 is made by itself without being controlled by the central processing unit 1 will be described in detail the operation Same as

In order to maintain the water temperature of the hot water, the heater HT ₁ (HT ₂ ) must be operated. The heater HT ₁ (HT ₂ ) is located at two places of the hot water tank 30, and the thermosensitive element is the contact switch CS _8. (CS ₁₀ ) is installed.

Therefore, when the temperature is lower than the proper temperature, the contact switch CS ₈ (CS ₁₀ ) is turned “on”. In addition, contact switches (CS ₈₎ contact switch located in the current path _{(CS 10) (CS 7)} (CS 9) is a float (Float) expression as a water level detection switch, that the water level of the hot water tank 30 proper value or less When it is turned off, the heater HT ₁ (HT ₂ ) in the absence of water is stopped.

The contact switch CS ₁ (CS ₂ ) is a switch for automatic water supply connected to a float, and the contact switch CS ₂ is in an “on” state when the water in the hot water tank 30 falls, and the contact point The switch CS ₁ is turned “off” when the water has risen to the proper level.

Therefore, when the hot water is insufficient, the triac TA ₂₀ is turned on by the “on” state of the contact switch CS ₂ , and the water supply solenoid SL ₁₅ is operated to supply water to the hot water tank 30. At this time, as the triac TA ₂₀ is turned on, the relay RY ₁ is operated so that the contact RY _1-1 remains connected so that the contact switch CS ₂ exceeds the minimum count level. Even if it is in the "state", the water supply solede SL ₁₅ continues to operate unless the contact switch CS ₁ is in the "hot" state because it is filled with hot water.

As described above, the present invention can efficiently control the vending machine using a microcomputer, and in particular, the present invention has a great advantage due to the program compared to the TTL-type defroster.

That is, in the case where a change in processing speed or a change in processing order is necessary, the TTL-type device must modify a circuit according to each change factor. However, in the present invention, the program ROM 2 can easily achieve the intended purpose by a simple change. Can be achieved.

In addition, in the TTL method, when an abnormality occurs in any one circuit, the entire circuit is affected, but in the present invention, all operations are automatically restored to a normal state immediately after removing the obstacles according to the display of the display device 17. .

On the other hand, the number of basic ports of the microcomputer is relatively large, and in the present invention, since there are a plurality of ports that are not used in the connectors J ₁ (J ₂ ) (J ₃ ) and the terminal T ₂ , additionally When necessary, the program can be accomplished by changing the program ROM 2 without adding a separate circuit. In addition, due to the installation of the melody generating device 19 and the display device 17, there is an effect that can facilitate the convenience of buyers and handlers.

Claims (1)

As described above in the text and illustrated in the drawing, the CPU 1 includes a central processing unit 1, a program ROM 2, three interface adapters 3, 4, 5, and a chip select decoder CS. In the control device of a vending machine equipped with a microcomputer, The interface adapter 3 displays the selling price of the multiplexer 6 and the buffer 7 and the selling price setting BCD circuit BS for transmitting the state of the hot water and the operation state of various conveying devices to the central processing unit 1. Install the multiplexer 8 for delivery to the central processing unit 1: The interface adapter 4 includes a buffer (9) 10 and an opto-isolator (OI ₁ -OI ₁₇ ) for transmitting a driving device operation signal and various indicator operation signals from the central processing unit 1. The liquid controllers 11 and 12 are installed; The interface adapter 5 includes a triac controller 13 including a buffer 10 for transmitting the operation signal 10 to the coin processing device 14, a decoder 15, and an opto-isolator OI ₁₈ -OI ₂₅ . In order, and on the other side of the interface adapter 5, the segment decoder 18 having the inverter oscillation circuit 25, the disc play device 17, and the sale operation on the outside to display various obstacles or input amounts. Install a melody generating device 19 for notifying, and on the other side install a multiplexer 16 for transmitting the coin processing signal from the coin processing device 14 to the central processing unit (1): On one side of the power supply device 21 having a time delay relay (TDR) is characterized in that the hot water and chopsticks discharge control unit 36 for adjusting the amount of hot water, the temperature of hot water, the injection of hot water, chopsticks discharge, etc. Control device of a vending machine.

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