JPS6045478B2 - How to display when vending machines can sell products and when they are sold out - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control system for a vending machine in which various terminal parts of the vending machine are centrally controlled by a central processing unit.

Conventionally, in vending machines where various switches and displays that are components of the vending machine are centrally controlled by a central processing unit such as a micro CPU, the central processing unit and each of these terminal parts are connected one-to-one. is common.

Therefore, the central processing unit requires a large number of input/output terminals, and the number of wires increases, making wiring processing very troublesome during assembly. The central processing unit requires complex control to send and receive signals to and from each terminal component. In particular, in order to display the sales possibility of a product and the sold out display, an indicator and a switch device are provided for each product sales column, so in vending machines with many types of products, the number of wires increases exponentially, resulting in couplers and terminals. The number of connectors such as these will also increase. From the above point, the present invention
An automatic vending system that greatly reduces the wiring between the central processing unit and each terminal component, and can effectively introduce the necessary data and output display signals for displaying product sales potential and sold-out display. There is also one that provides a control method for the machine. In order to achieve such an object, the present invention provides a vending machine having one transmission line for each product sales column, in which one transmission line is provided for each product sales column and the corresponding terminal parts are connected to each other. At the same time, a shift register is provided to activate specific transmission lines under the control of a central processing unit, and in a first step, the central processing unit sequentially activates the signal lines one by one under the control of the shift register. In addition to introducing product sold-out information and sales price data for each product sales column, it is determined whether or not the product of the product sales column can be sold according to the input amount and product sold-out information, and the second
In the step, the central processing unit activates a predetermined transmission line by controlling the bus setting means based on the product sold-out information, and displays the sold-out information on the product sold-out display means;
Further, by controlling the bus set means based on the determination of whether or not the product can be sold, a predetermined transmission line is activated and the possibility of sale is displayed on the sale possibility display means. With this configuration, the central processing unit can
By controlling the shift register and sequentially activating the transmission line for each product sales column, data necessary for displaying the sales possibility or sold out of the product is introduced, and based on this data, the shift register is controlled to identify the product. The above display can be performed by activating the transmission line.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the present invention applied to a five-column vending machine. Therefore, the bus line 5 has five transmission paths 51.
, 52, 53, 54, and 55, and each transmission path includes a sold-out detection switch 3, a selection switch 2, and a selection switch 2 in the corresponding column.
A sellable display lamp 7, a sold-out display lamp 6, and a price setting section 4 are connected. Each transmission path 51 of the bus line 5,
52, 53, 54, and 55 are connected to each stage of the shift register 8 consisting of five stages of delay flip-flop circuits, and are controlled to be conductive or non-conductive depending on their output states. For example, in this embodiment, the circuit is designed so that when the output state of the stage of the shift register 8 is RO, the corresponding transmission path becomes conductive. Of course, it is also possible to design a circuit that conducts when it becomes RlJ, and in any case, the transmission path that makes it conductive. It will be clear that it is sufficient to control the shift register 8 so that the corresponding stage has an output state different from that of the other output stages. Further, the price setting unit 4, which is made up of five changeover switches 41, sets the product price of the corresponding column. OFF (output RlJ)
By doing so, the product price can be set using a binary code. Then, the product price information shown in parallel on the 5-bit transmission line 16 from each changeover switch 41 enters the shift register 9 and is converted into serial information and transmitted to the CP.
It is designed to be input into Ul. Further, the ROM10 stores a program according to the flowchart shown in FIG. 2, and the CPU1 reads and executes the program. The operation will be explained using the flowchart shown in FIG. First, when the power is turned on and the bus set mode is reached after going through the initial state 1NIT, only the transmission path between the column to be scanned by CPU1 among the bus lines and CPU1 is made conductive. In order for only the transmission path 51 to be conductive, the outputs Ql, Q2, Q3, Q4,
It is sufficient if Q5 becomes ROJrl, RlJrl, r1yo, respectively, and the CPU 1 performs processing so that the shift register 8 is in this state. The configuration and operation timing chart of the shift register 8 are shown in FIGS. 3 and 4. That is, C
PUl outputs a shift pulse CPl to the delay flip-flop circuit 11 via the I/0 port 121 terminal, and also outputs 5-bit data RlJrljrl to the first stage delay flip-flop circuit 11 via the I/0 port 12h terminal.
Output JrljrOJ sequentially.

Therefore, at the rising edge of the 1st bit shift pulse, the content of the data input appears on the Q1 output, and at the rising edge of the 12th bit shift pulse, the content of the 1st bit Q1 output appears on the Q1 output.
At the same time, the content of the 2nd bit data input appears in the Q1 output, and the same operation is performed to input 5 bits.
The output of each stage is changed to ROJrl. by the second shift pulse. J
This means rlJrl, JrlJ. In addition, in the timing chart, the portion of the output waveform from Q1 to Q5 indicated by the dotted line is the content held in the shift register 8 before entering this operation, and is r1 or ROJ, which is 5 bits.
All disappear at the rising edge of the eye shift pulse CPl.

When the transmission path 51 becomes conductive in the bus set mode, the CPU1 starts scanning the corresponding column.

First, in the sold-out determination mode, the CPU 1 opens the I/0 port 12d so that a signal can be input.
The sold-out switch 2 turns 0N when the product in the column runs out, and if the product is sold out, the Q1 output ROJ of the shift register changes to CP via the transmission path 51 and the sold-out switch 2.
You can detect out-of-stock items in this column by inputting this into Ul. Therefore, if the product is out of stock, ROJ is stored in the internal scratch bad register, and if the product is not out of stock, RlJ is stored in the internally provided scratch bad register. That is, the register indicates the presence or absence of each product in the five product sales columns using 1 bit Rl.
It is stored as 5-bit product sold-out data indicated by J or RO. In sales price input mode, CPUl is I/0
Shift pulses CP2 and P from the boat 12g and h ends, respectively.
The L signal is output to read price information from the price setting section 7.

6 and 7 show the structure and operation timing chart of the shift register 9. FIG. For example, if the price set by the price setting unit 4 corresponding to the transmission path 51 is 100 yen, the Q1 output RlJ of the shift register 8 transmits the price information ROJrlJrOJrlJrOJ via the 5-bit transmission line 16.
is input to the input terminals 1 to 5 of the shift register 9, which is composed of a five-stage delay flip-flop circuit 13, and is inputted when the shield code arrives.

Then, the shift register 9 is shifted up by the 5-bit shift pulse CP2 sent out, and the price information ROJrl is output from the delay flip-flop circuit 13 at the last stage.
It outputs ROJ serially to CPU1.

The timing chart in FIG. 7 shows the output status of each stage of the 5-stage delay flip-flop circuit 13 using waveforms A, B, C, D, and E. In particular, E shows the output status of each stage of the 5-stage delay flip-flop circuit 13. This is the price information that is serially input to the CPU1.The sellability determination mode determines whether the product in this column can be sold based on the price information input to the CPU1 and the sold-out determination result stored in the scratch bad register. This is what we do.

That is, if there is an amount of money inserted into the vending machine at that time, the CPU 1 compares this amount with the above-mentioned input price information and determines whether the product can be sold. Further, even if there is no input amount, O and the price information are compared and calculated, but it is naturally not determined that the item can be sold. The result of this judgment as to whether or not it can be sold is also determined by CPU1, if it is possible to sell it, RO. J. If this is not possible, it is stored in the scratch bad register as RlJ. That is, the register is 5
5-bit sales availability determination data indicating whether or not a product can be sold for the street product sales column is stored separately from the product sold-out data using 1-bit RlJ or ROJ. The selection mode detects whether the selection switch 3 of the column corresponding to the transmission path 51 is operated.

Although the selection switch 3 is not shown, it is configured so that when it is operated in the sales ready state, the ON state is maintained until delivery of the product is confirmed. Therefore, in the case of 0N, C
RO is input to PU1 via the I/0 port I2c end, and the start of a sales operation can be detected. Therefore R.O.
In response to the input, CPU1 jumps to the sales routine and performs sales control.

If the selection switch 3 is not operated, the highest column determination mode is reached.

In this mode, it is determined whether the column scanned so far is the last column, and if there is another column to be scanned, the mode shifts to bus set +1 mode. The scanning described above is performed when the shift pulse CPl is output in 5 bits and the state of the shift register becomes 1 or 0. The CPU1 sets the bus so that only the output of the shift register 8 becomes ROJ so that the path 52 becomes conductive.

Therefore, in this mode, CPUl has data RlJ.
and the 6th bit shift pulse CPl are transferred to the shift register 8.
When output to RlJrOJrlJrlJ
Then, the above-mentioned series of scans, including the sold-out determination, sales price input, sales availability determination, and selection, of the column corresponding to the transmission path 5 are executed again, and if there is no operation of the selection switch 3 of this column, Reach bass set +1 mode.

Then, the CPUl outputs the data RlJ and the 7th bit shift pulse CPl to the shift register 8, makes the transmission path 53 conductive, and scanning of the corresponding column is started again. While the scanning of each column is executed in this way, when the highest column judgment mode is reached five times without operating any of the selection switches 3, the CPU outputs a 9-bit shift pulse, and therefore all columns are scanned. When it is detected that the scanning is completed, the process moves from the column scanning step 5 to the display step. Now, in the column scanning step, it is detected that the column corresponding to the transmission paths 52 and 54 is sold out, and this is detected by the scratch bad register.
This will be explained assuming that it is stored as the product sold-out data of JrOJrlyo ROyo RlJO.

First, in bus set mode, CPU1 reads data r1 based on the memory of the scratch bad register.
rO. , rlJ. A 55-bit shift pulse CPl is output to the shift register 8.

This timing chart is shown in FIG. 5, and the operation is the same as that in FIG. 4. All product sold out data is written to the shift register 8 by the 5th bit shift pulse CPl, and the output state becomes RlJrOJrlJrOJrl,J, and the bus Set.

In other words, the transmission paths 52 and 54 have become conductive. However, when Shinogu PUl outputs RlJ from the I/0 boat 12b end to the base of transistor 14 in the sold-out display ON mode, the display lamps L2 and L light up because the transmission paths 52 and 54 are conductive, indicating that it is sold out. can be displayed.

And in the sold-out display OFF mode after lighting for a predetermined time, I
The RlJ output from the /0 port 12b end is stopped and the light is turned off. The next step is to display the sales availability status.

This operation is similar to the sold-out display, and the CPU 1 inputs the sellable determination data stored in the scratch bad register to the shift register 8 together with a 5-bit shift pulse to set the bus and enable conduction of the transmission path corresponding to the sellable column.

At this time, if there is no input amount, or if there is, but the selling price has not been reached, the sellability determination data is RLr.
LrlJrLrlJ cannot conduct.

However, QPUl outputs RlJ from the I/0 boat 12a end to the base of the transistor 15, and +V2 is applied to the sellable indicator lamps L1'', L2'', L3'', Li'', and L''. After a predetermined period of time, the CPU 1 reaches the input amount display routine and executes the input amount display routine.

After that, in the flowchart, the processing of the CPU1 returns to the column scanning step, and if no coins have been inserted, or if the selection switch 2 has not yet been operated even if coins have been inserted, the operations up to this point are repeated. . Naturally, when the range of sellable status expands due to the input amount or additional input, CPU1 determines the sellable products according to the amount in the next sellable determination mode, and in the display step Display the product as ready for sale. The present invention provides a transmission line for each product sales column, and commonly connects the sales price setting means, product sold-out detection means, product sold-out display means, and sale possible display means of the column to this transmission line. Wiring between the central processing unit and these terminal components can be significantly reduced.

Then, the shift register sequentially activates the transmission lines and reads the product sold-out information and sales price data for each column to determine whether or not the product can be sold. Activating the transmission line facilitates display processing.

[Brief explanation of the drawing]

Figure 1 shows a vending machine to which the control method of the present invention is applied, Figure 2 is an operation flowchart, Figures 3, 4, and 5.
The figure shows the logic circuit and operation timing chart of the shift register 8, and FIGS. 6 and 7 show the logic circuit and operation timing chart of the shift register 9. Description of main drawing numbers 1...Central processing unit, 3...Merchandise sold out detection means, 4...Selling price setting means, 5...Bus line, 51, 52, 53...Transmission route , 6... Product sold out display means, 7... Sale available display means.

Claims (1)

[Claims] 1. In a vending machine that is equipped with terminal parts for each product sales column, such as a sales price setting means, a product sold-out detection means, a product sold-out display means, and a sellable display means, one transmission line is connected to each product sales column. A shift register is provided to connect the corresponding terminal parts and to activate a specific transmission line under control of the central processing unit, and in a first step, the central processing unit activates the signal line by controlling the shift register. are activated one by one to introduce product sold-out information and sales price data for each product sales column, and determine whether or not the product can be sold in the product sales column according to the input amount and product sell-out information. In two steps, the central processing unit activates a predetermined transmission line by controlling the shift register based on the product sold-out information, and displays the sold-out information on the product sold-out display means, and based on the determination of whether or not the product can be sold. A method for displaying whether a product is available for sale or sold out in a vending machine, wherein a predetermined transmission line is activated by controlling the shift register to display the possibility of sale on the sale possibility display means.