JPH0113587B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention determines whether or not it is possible to sell a product by determining whether change can be paid out for a product whose selling price is within the total amount of coins inserted. The present invention relates to a control device for a vending machine.

[Conventional technology]

The first vending machine that determines whether or not a sale is possible for a selling price within the total amount of coins inserted (hereinafter also referred to as the amount inserted) is the first one.
A device as shown in the figure is known (Japanese Unexamined Patent Application Publication No. 52-118)
Publication No. 37496). In FIG. 1, 1 is the main counter that calculates the total amount of coins inserted, 2 is the price setting section that sets the selling price of the sold product, and 3 and 4 are the stored contents of the main counter 1 and are set in the price setting section 2. A comparator 5 is stored in a coin storage cylinder provided corresponding to a coin storage cylinder in which a 10 yen coin for change is stored.
A 10 yen coin number detection unit for change detects the number of 10 yen coins stored, and 6 is provided corresponding to a coin storage cylinder in which 50 yen coins for change are stored, and 50 yen coins are stored in the coin storage cylinder. This is a 50 yen change coin number detection unit that detects the number of stored coins. The 10 yen coin number detection unit 5 outputs a logic signal " ₁ " to one input terminal of the OR circuit OR 1 via the signal line 99 when the number of coins in the coin storage cylinder containing 10 yen coins is 9 or more. and when there are four or more coins in the coin storage cylinder containing 10 yen coins, a logic signal "1" is sent to one input terminal of the AND circuit AD via the signal line _S4 . The change 50 yen coin number detection unit 6 outputs a logic signal "1" to the other input terminal of the AND circuit AD via the signal line _S1 when the number of coins in the coin storage cylinder containing 50 yen coins is one or more. Send. The output terminal of the AND circuit AD is connected to the other input terminal of the OR circuit OR ₁ , and when there are at least 9 10 yen coins as change, or at least 4 10 yen coins and at least 1 50 yen coin. At a certain time, that is, when the maximum amount of change is 90 yen, a logic signal " ₁ " is sent from the OR circuit OR1. This OR circuit OR ₁
The comparator 3 is enabled to operate by the logic signal "1" from the OR circuit OR circuit 4, and the comparator 4 is disabled by the logic signal "0" which is the inversion of the logic signal "1" from the OR circuit OR ₁ by the inverting circuit NOT. state. Further, when the logical signal "0" is output from the OR circuit _OR1 , the comparator 4 becomes operational and the comparator 3 becomes inactive, contrary to the above. As a result, when the maximum amount of change is 90 yen, the comparator 3 outputs a logic signal "1" when the stored content of the main counter 1 (i.e., the input amount) is equal to or higher than the selling price of the product set in the price setting section 2. A sellable signal VEND is sent out through the OR circuit OR ₂ , and when the change is less than 90 yen, a logic signal "1" is sent out from the comparator 4 only when the input amount matches the selling price of the product. A sellable signal VEND is sent out via the circuit _OR2 .

In this conventional device, if there is at least the maximum amount of change of 90 yen in a combination of 10 yen coins for change and 50 yen coins for change, a sellable signal VEND is sent for products whose selling price is within the input amount. 10 yen coins and 50 yen coins can be combined as change, but if you do not have at least the maximum amount of change as change of 90 yen or more, the sales price requires change for the input amount. The sellable signal VEND for the product is not sent and the sale is not allowed.

By the way, in a vending machine that allows continuous sales, for example, you may insert two 100 yen coins to purchase two 100 yen products, but in this case, the amount inserted is 200 yen > the sale. The price is 100 yen, and unless you have more than the maximum change of 90 yen, you will not be allowed to sell them, making it impossible to sell them continuously and having to purchase them one by one.

To solve this inconvenience, for example, as described in Japanese Patent Application Laid-Open No. 57-157386, the number of coins held for each denomination of change coins is calculated by adding and subtracting the input coins and the paid coins for each denomination. a means for counting the number of coins held; a change shortage detection means (out-of-change detection sensor) for detecting the shortage of the change coins by denomination; and a calculation means for calculating the (scheduled) amount of change in response to a sales price that is less than the input amount. and a change dispensing possibility determining means for determining whether or not the change (scheduled) amount can be disbursed based on the number of coins held by denomination determined by the counting means and the detection result of the change shortage detecting means, A device is known in which sales at the set sales price are permitted when it is determined that change can be dispensed.

In other words, according to this conventional device, when two 100 yen coins are inserted to purchase two 100 yen products, the number of coins held by denomination of change coins is 2 of the 100 yen coins inserted. Since the coins are counted, even if there are no other coins for change, the change amount of 100 yen for a product with a selling price of 100 yen for an input amount of 200 yen is the two 100 coins counted as the number of coins held.
It is determined that it is possible to pay out using one of the yen coins, and the sale is permitted. Therefore, even if the out-of-change detection sensor detects that the change is out, continuous sales are possible.

[Problem to be solved by the invention]

By the way, in this conventional device, when the out-of-change detection sensor does not detect out-of-change, the change is deemed to be payable regardless of the amount and the sale is permitted, and the inserted coins are used as change coins. It is stored in a storage device (coin storage cylinder).

For this reason, coins are inserted when change is out,
If the coin falls inside the coin storage cylinder, the out-of-change detection signal of the out-of-change detection sensor provided on the way may change (out of change → change present). If the out-of-change detection signal from the out-of-change detection sensor no longer indicates out-of-change, sales are permitted regardless of the amount of change, so even though there are no change coins to be dispensed,
A malfunction may occur in which a sale is permitted and, as a result, change is not dispensed.

In view of the above-mentioned points, the present invention uses only the detection signal of the out-of-change detection sensor at the time when the first coin is inserted, and in addition, the predetermined coin detected by the out-of-change detection sensor at that time is set to the number of coins inserted. To provide a control device for a vending machine that does not affect the determination of whether a sale is possible even if the detection signal of an out-of-change detection sensor is changed by an inserted coin by adding the sum and using it for determining whether the sale is possible. With the goal.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention includes a plurality of coin storage cylinders classified by denomination for storing input coins as change coins, and detects whether a predetermined number or more of coins are stored in each of the coin storage cylinders. the sensor for detecting out of change for each of the plurality of denominations, the amount storage means for storing the total amount of the inserted coins and the remaining amount after the sale of the product based on the total amount, and adding 1 to the number of stored coins each time a coin is inserted. an input number storage unit for each of the plurality of denominations, a change amount calculation means for calculating a change amount by subtracting a selling price from the total amount, and a payout using coins in which the change amount is within the number of coins stored in the input number storage unit. a dispensing permission determining means for discriminating whether dispensing is possible; and a sales permitting means for permitting the sale of the product at the sales price when the determination result of the means is that dispensing is possible, and disallowing the sale when dispensing is not possible. , a control device for a vending machine, comprising: a change dispensing means for dispensing the amount of change necessary after the sale of a product permitted for sale by the means, from the coin storage tube in coins within the number of coins stored in the input number storage section; In,
a coin insertion storage means that is set by inserting a coin and is reset when the amount stored in the amount storage means becomes zero; a memory determination means that determines whether the coin insertion storage means has been reset; and the change. out-of-change determining means for determining whether or not more than a predetermined number of coins are stored in each of the plurality of denominations based on a detection signal from a out-of-change detection sensor; The invention is characterized in that it includes presetting means for presetting the predetermined number of sheets in the input sheet number storage section in response to the reset determination of the storage determining means.

[Effect]

The coin insertion storage means of the present invention is set when a coin is inserted, and is reset when the amount stored in the amount storage means becomes zero. It is in a reset state. The reset means presets a predetermined number of coins into the inserted coin number storage section in response to the reset determination of the memory determination means for determining the state of the coin insertion storage means, and in response to the detection signal of the out-of-change detection sensor. Therefore, when the first coin is inserted and the coin insertion storage means is set, even if coins are inserted thereafter, the input number storage section is not preset, and the first coin is inserted and the coin insertion storage means is set. A predetermined number of coins can be preset according to the detection signal of the out-of-change detection sensor at the time immediately before the input storage means is set, and the number of coins inserted is added to this predetermined number and stored. In determining whether or not it can be sold,
In this way, it is only determined whether or not the amount of change within the number of coins stored in the memory unit for the number of coins inserted can be paid out, and there is no need to refer to the detection signal of the out-of-change detection sensor. There is no effect even if the detection signal of the detection sensor is changed.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the drawings. FIG. 2 is a block diagram showing one embodiment of the present invention, and FIGS. 3 to 5 are flowcharts.

In Fig. 2, numeral 10 is a coin detection unit that detects the inserted coins that are accepted as genuine coins among the inserted coins. A coin signal C indicating the denomination is output. Each coin that has passed through the coin detection section 10 is automatically stored in a coin storage cylinder for each denomination, as is well known from Japanese Patent Application Laid-Open No. 48-95896. Coin signal C from coin detection unit 10
The central processing unit 20 (hereinafter referred to as CPU) to which the coins are inputted is used as a calculation unit that counts and stores the number of coins inserted for each denomination in an input number storage unit 30 based on the coin signal, and also makes a judgment as to whether the coins can be sold or not, which will be described later. . 40 is a sales price setting unit that sets the sales price of the product; 50 is a unit that dispenses coins from a coin storage cylinder into which coins are automatically replenished in response to a settlement command from the CPU 20; As shown in FIG. 6, a change dispensing device 60 sends an out-of-change signal EMP to the CPU 20 using an out-of-change detection sensor that detects whether a predetermined number or more of coins are stored in the coin storage cylinder.
is a display unit that displays a selection button corresponding to the selling price of the product using a lamp in response to the sales enable signal VEND from the CPU 20. The purchaser has 1 CPU 20.
Every time a coin is inserted, the out-of-change detection signal EMP is read from the change dispensing device 50, and when the out-of-change signal EMP is not generated, the input number storage unit 30 for each denomination is set to a predetermined value N, for example, out of change. If the predetermined number of sheets at which the detection signal EMP is not generated is nine, the preset number is preset to nine. The input number storage unit 30 adds and stores the number of input coins, and each time a coin is dispensed from the change dispensing device 50, the dispensed number is subtracted from the counted value of the corresponding denomination.

Next, the operation of the CPU 20 will be explained using FIGS. 3 to 5. Figure 3 shows the operation of calculating the input amount and counting and storing the input coins by denomination.The denominations of the input coins are 10 yen, 50 yen, and
The case of three denominations of 100 yen coins is shown.

When the power is turned on, in step 201, the main counter as an amount storage means for storing the input amount and each coin counter as the input number storage section 30 for each denomination of input coins are reset to a standby state.
Coin signal C from the coin detection section 10 shown in FIG.
When input, step 202 to step 203
In step 203, the timer is reset, as will be explained later. Next step 20
4, step 205 will be explained before explaining step 204 for ease of understanding. In step 205, when the first coin is inserted by the purchaser, the fact that a coin has been inserted is stored in the 1st bit (coin insertion storage means) at address N of a storage device RAM (not shown) that can be continuously read and written. do. In step 204, this storage device
If the insertion of a coin is stored in the 1st bit of the N address of the RAM, the process advances to step 212, and the purchaser enters the 1st bit.
When the first coin is inserted, the storage device
Since the 1st bit of address N in RAM does not yet remember that a coin was inserted, step 20 is performed.
5, and in step 205, the fact that the first coin has been inserted is stored in the memory device RAM as described above. When the process proceeds from step 205 to step 206, the state of the out-of-change detection signal EMP of the 10 yen coin for change is determined, and if the out-of-change detection signal EMP is not generated, the process proceeds to step 207, where the out-of-change detection signal EMP is generated. If so, proceed to step 208. In step 207, the 10 yen coin input storage unit (hereinafter referred to as 10 yen number counter) is set to a predetermined value N, for example, when the 10 yen coin out-of-change detection sensor indicates that there are less than 9 10 yen coins in the 10 yen coin storage cylinder. When the out-of-change detection signal EMP is generated at the point in time, the change is preset to 9 and the process proceeds to step 208. Step 208
Similarly, the out-of-change detection signal for a 50 yen coin.
Determines the EMP status and sends a corresponding out-of-change detection signal
If EMP has not occurred, the process proceeds to step 209, and if the out-of-change detection signal EMP has occurred, the process proceeds to step 210. In step 209, the 50 yen coin input number storage unit (hereinafter referred to as 50 yen coin counter) is preset to a predetermined value N, for example 9, and the process proceeds to step 210. Similarly, in step 210, the state of the out-of-change detection signal EMP of the 100 yen coin for change is determined. If the out-of-change detection signal EMP is generated, the process proceeds to step 212, and if the out-of-change detection signal EMP is not generated, the process proceeds to step 212. Proceed to step 211. In step 211, the 100 yen coin input number storage section (hereinafter referred to as 100 yen coin counter) is preset to a predetermined value N, for example 5, and then step 2
Proceed to step 12.

Steps 212, 214, and 216 are steps for determining whether the denomination of the inserted coin is a 10 yen, 50, or 100 yen coin, and if the denomination of the inserted coin is a 10 yen coin, steps 212 to 213 are performed. Steps 214 and 216 add 1 (that is, 10 yen) to the 10 yen counter, and then add 10 to the memory content K of the main counter that calculates the input amount.
The process then proceeds to step 218. If the inserted coin is a 50 yen coin, the process advances from step 212 to step 214, and in step 215, 1 is added to the 50 yen coin counter.
(i.e. 50 yen), and 50 is added to the memory content K of the main counter, and the process moves from step 216 to step 2.
Proceed to 18. If the denomination of the inserted coin is a 100 yen coin, steps 212 and 214 to step 216
In step 217, 1 (ie, 100 yen) is added to the 100 yen coin counter, 100 is added to the memory content K of the main counter, and the process proceeds to step 218. In step 218, a timer is started. After this timer starts operating, it is determined in step 219 whether or not the timer's time limit has expired.
Before the time limit of the timer has elapsed, the system waits for a coin to be inserted in step 220, and when a coin is inserted, the process returns from step 220 to step 203 and the timer is reset. If a coin is not inserted before the timer expires, the process proceeds to the terminal. Therefore, if coins are sequentially inserted before the timer expires, the process advances from step 203 to step 204 and then to step 2.
In a closed loop from 12 to 220, the input amount K and the number of input coins for each denomination are added and stored in each denomination counter. In this way, from step 206 to step 2
If the counter for each denomination is not out of change as a result of the processing up to step 11 (that is, if there is no out of change detection signal EMP), the number of inserted coins and the predetermined number detected by the out of change detection sensor are added and stored, When the change is out (that is, when there is an out-of-change detection signal EMP), the number of coins inserted is added and stored.

When it is detected in step 219 that the timer operation has ended, the process proceeds from the terminal shown in FIG. 3 to the terminal shown in FIG. 4, and it is determined whether or not the product can be sold for the input amount K. In FIG. 4, in step 301, one sales price is read out in a predetermined order from among the plurality of sales price settings _SP1 to _SPo set in the sales price setting unit 40 shown in FIG. Read the set price and set it as the sales set price SP. In step 302, the input amount K is compared with the read sales setting price SP, and if the input amount K is the same as the sales setting price SP or exceeds the sales setting price SP, the process proceeds to step 304. move on. If the input amount K is smaller than the sales set price SP, the process advances to step 303.
Then, it is determined whether the sales setting price SP is the last sales setting price SP _o . If it is the last sales setting price SP _o , it enters a standby state, and if it is not the last sales setting price SP _o , the next sales setting is started in step 301. The price is read out as SP and the process goes to step 302. Step 302
If the input amount K and the sales set price SP match or the input amount K exceeds the sales set price SP, in step 304, the sales set price is changed from the input amount K.
Calculate the change amount _K1 by subtracting SP, and step 30
Proceed to step 5. In step 305, it is determined whether the change amount _K1 is 100 yen or more, or whether the change amount _K1 is less than 100 yen.If the change amount _K1 is less than 100 yen, the process advances to step 309. Change amount in step 305
If _K1 is determined to be 100 yen or more, the process proceeds to step 306. In step 306, it is determined whether the stored content of the 100 yen number counter is 1 (that is, 100 yen) or more. If the stored content of the 100 yen number counter is 1 or more, the process advances to step 307; otherwise, the process advances to step 309. Proceed to. 10 in step 307
1 (i.e. 100) from the memory contents of the 0 yen counter
yen) and proceeds to step 308. In step 308, 100 yen is subtracted from the change amount _K1 , and the process returns to step 305. Therefore, in steps 305 to 308, if the change amount _K1 is 100 yen or more, the change amount _K1 becomes less than 100 yen within the number of 100 yen coins stored in the 100 yen counter, or the change amount _K1 becomes less than 100 yen. before
100 yen is subtracted from the change amount K ₁ until the memory content of the 100 yen counter becomes ₀ .
The amount that can be paid out in 100 yen coins is subtracted.

Next, in step 309, it is determined whether the change amount _K1 is 50 yen or more or the change amount _K1 is less than 50 yen, and if the change amount _K1 is less than 50 yen, the process advances to step 313.
If the change amount _K1 is 50 yen or more, proceed to step 310. In step 310, it is determined whether or not there is memory content in the 50 yen number counter. If there is no memory in the 50 yen number counter, the process advances to step 313, but if there is memory in the 50 yen number counter, the process advances to step 311.
Subtract 1 (that is, 50 yen) from the yen counter. When the process advances from step 311 to step 312, 50 yen is subtracted from the change amount _K1 , and then the process returns to step 309. Therefore, steps 309-312
Then, if the change amount K ₁ is 50 yen or more, the 50 yen number counter will continue until the change amount K ₁ becomes less than 50 yen within the number stored in the 50 yen counter, or before the change amount K ₁ becomes less than 50 yen. 50 yen is subtracted from the change amount K ₁ until the memory content becomes 0, and from the change amount K ₁
The amount that can be paid out in 50 yen coins is subtracted.

Next, in step 313, it is determined whether the change amount _K1 is 10 yen or more, or if the change amount _K1 is less than 10 yen.If the change amount _K1 is less than 10 yen, that is, the change can be paid out, the step The process proceeds to step 317, and when the change amount _K1 is 10 yen or more, the process proceeds to step 314.
In step 314, it is determined whether the stored content of the 10 yen number counter is 1 (that is, 10 yen) or more. If the stored content of the 10 yen number counter is 1 or more, the process proceeds to step 315, where the memory of the 10 yen number counter is If the content is less than 1, that is, the count storage content is 0, the process advances to step 317. When the process proceeds from step 314 to step 315, 1 is subtracted from the 10 yen counter, and then in step 316 the change amount K is subtracted from _1.
10 yen is subtracted and the process returns to step 313. From step 313 to step 316, the change amount K ₁ is changed to 10 yen until the change amount K 1 becomes less than 10 yen within the number stored in the 10 yen counter, or until the change amount K ₁ becomes 0. subtract and
The amount that can be paid out in 10 yen coins is subtracted from the change amount K ₁ . Therefore, proceeding from step 313 to step 317 means that change can be paid out and the product at the sales set price SP can be sold, so it is possible to sell, and proceeding from step 313 to step 314 via step 317. It is not possible to pay out change, and the sales set price
SP products cannot be sold and cannot be sold. In step 317, it is determined whether the item can be sold or not, and if the item can be sold, the process goes to step 31.
In Step 8, a lamp is displayed on the display section 60 in FIG. 2 for the product with the sales set price SP, and then Step 31
Proceed to 9. If it is determined in step 317 that the item cannot be sold, the process also proceeds to step 319, and then proceeds to step 31.
In 9, the sales setting price SP is the last sales setting price SP _o
It is determined whether or not. If it is determined in step 319 that the sales setting price SP is the last sales setting price SP _o , the system enters a standby state and the sales setting price SP
If it is determined that the current sales price is not the last set sales price SP _o , the process proceeds from step 319 to step 301, reads the new sales set price, and uses the same operation as described above to determine whether or not the product at the sales set price can be sold. do.

Next, the case where the user presses the checkout button after finishing purchasing the product will be explained using FIG. 5. When the payment button is pressed, the payment mode is entered, and in step 401, it is determined whether the change amount _K2 is 100 yen or more, or whether the change amount _K2 is less than 100 yen,
If the change amount _K2 is less than 100 yen, proceed to step 406, and if the change amount _K2 is 100 yen or more, proceed to step 40.
Proceed to 2. In step 402, it is determined whether the stored content of the 100 yen counter is 1 or more.
When the stored content of the 100 yen number counter is 1 or more, the process proceeds to step 403, and when the stored content of the 100 yen number counter is 1 or less, the process proceeds to step 406. In step 403, 100 yen coins are dispensed from the coin storage tube containing 100 yen coins,
Proceeding to step 404, in step 404, the amount of change is
Subtract 100 yen from K ₂ , then in step 405
1 from the memory contents of the 100 yen counter (i.e.
100 yen) and return to step 401. In steps 401 to 405, 100 yen coins are paid out as change, and if the change amount _K2 is less than 100 yen or the stored content of the 100 yen coin counter becomes 0 before the change amount _K2 becomes less than 100 yen, step 406 is performed. Proceed to.

In step 406, the change amount _K2 is less than 50 yen or 50
If the change amount _K2 is less than 50 yen, the process proceeds to step 411, and if the change amount _K2 is 50 yen or more, the process proceeds to step 407, where the memory content of the 50 yen counter is set to 1. It is determined whether the stored content of the 50 yen number counter is 1 or more, the process advances to step 408, and the stored content of the 50 yen number counter is 1 or more.
When the value is less than 0, that is, the value is 0, the process proceeds to step 411.
In step 408, since there is a memory content in the 50 yen counter, the 50 yen coin is dispensed from the coin storage cylinder containing the 50 yen coin, and then in step 409, 50 yen is subtracted from the change amount _K2 . At step 410, 1 is selected from the memory contents of the 50 yen counter.
(that is, 50 yen) and returns to step 406. In steps 406 to 410, 50 yen coins are paid out as change, and if the amount of change _K2 is less than 50 yen or even if the amount of change _K2 is 50 yen or more, the stored content of the 50 yen coin counter becomes 0, then step 411 is executed. Enter.

In step 411, the change amount K ₂ is less than 10 yen or 10
It is determined whether the amount is equal to or greater than yen, and if the change amount K ₂ is less than 10 yen, that is, when the change amount K ₂ =0, the payout of change is finished. If the change amount _K2 is 10 yen or more in step 411, the process advances to step 412. In step 412, one 10 yen coin is dispensed from the coin storage tube containing 10 yen coins, and in step 413, the change amount is changed from K ₂ to 10.
Then, in step 414, 1 (ie, 10 yen) is subtracted from the stored contents of the 10 yen counter, and the process returns to step 411. In steps 411 to 414, 10 yen coins are paid out as change until the change amount _K2 becomes less than 10 yen, that is, 0 in step 411. Here, in steps 411 to 414, it is not determined whether or not there is a memory content in the 10 yen counter, but this is because only the products for which change can be paid out are determined by the judgment of whether or not they can be sold as explained in FIG. This is because the payment method shown in FIG. 5 guarantees that change will be paid out. In this way, when the payout of change is completed and the memory content of the main counter, that is, the input amount becomes zero, the 10 yen number counter, the 50 yen number counter, and
The memory contents of the 100 yen counter are reset,
Furthermore, the memory contents of the memory device RAM, which stores the fact that the first coin has been inserted by the purchaser in step 205 shown in FIG. 3, are reset.

〔Effect of the invention〕

According to the present invention as described above, it is determined whether the amount of change can be paid out within the number of coins added to the preset predetermined number of coins according to the detection signal of the out-of-change detection sensor when the first coin is inserted. Even if the detection signal of the out-of-change detection sensor changes depending on the inserted coin, it does not affect the judgment of whether the sale is possible or not.As with the conventional method, the judgment of whether the sale is possible or not is made by referring to the detection signal of the out-of-change detection sensor. The chances of erroneous determination can be reduced compared to those that make determinations.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a conventional device, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIGS. 3 to 5 are flowcharts for explaining the operation of this embodiment. 20...Central processing unit (CPU), 30...Input number storage section, 50...Change dispensing device.

Claims (1)

[Claims] 1. A plurality of coin storage tubes classified by denomination for storing input coins as change coins, and a plurality of change detection sensors classified by denomination that detect whether or not a predetermined number of coins or more are stored in each of the coin storage tubes. ,
an amount storage means for storing the total amount of coins inserted and the remaining amount after the product is sold based on the total amount; and a storage unit for the number of inserted coins for each of the plurality of denominations, which adds 1 to the stored number of coins each time a coin is inserted. a change amount calculation means for calculating a change amount by subtracting a sales price from the total amount, and a payout possibility determining means for determining whether the change amount can be paid out using coins within the number of coins stored in the input number storage section. , a sales permission means that permits the sale of the product at the selling price when the determination result of the means is that the product can be paid out, and disallows the sale when the result of the determination is that the product cannot be paid out, and after the sale of the product that is permitted to be sold by the means; A control device for a vending machine is provided with a change dispensing means for dispensing a required amount of change from the coin storage tube using coins within the number of coins stored in the input number storage section, which is set by inserting coins and then dispensing the amount of change. a coin insertion storage means that is reset when the amount stored in the storage means becomes zero; a memory determination means that determines whether the coin insertion storage means has been reset; out-of-change determining means for determining whether or not coins are stored for each of the plurality of denominations; 1. A control device for a vending machine, comprising: presetting means for presetting in response to reset determination by the memory determining means.