JPS61290591A - Sale relay driving circuit for vending machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drive circuit for a vending relay of a vending machine that performs vending by operating vending-related equipment at predetermined timing.

[Prior art and its problems] Most of the control of recent vending machines is performed by microcomputers, and the central processing unit (CP)
In order to operate sales equipment such as motors and electromagnetic valves using the output of J), a method as shown in FIG. 4 is generally used. In other words, the CPUI output port signal is PPI
The signal is transmitted to a buffer 3 such as a transistor array via a peripheral 1102 such as a gate or a latch. The buffer 3 drives the sales relay 4, and as a result, the contact X of the sales relay 4 is turned on and the sales equipment is activated.

By the way, especially in recent vending machines, the number of motors and electromagnetic valves involved in vending is increasing due to combinations and multi-functions. Along with this, the number of buffers and output boats mentioned above will increase in the control section of the vending machine, resulting in an increase in printed board area and number of parts.
This caused problems such as a lack of space in the control section and high costs.

OBJECT OF THE INVENTION This invention was made to eliminate the above-mentioned problems, and provides a vending machine vending relay drive that can drive more vending relays with a smaller number of buffers 1 and output boats. The purpose is to provide circuits.

"Structure of the Invention" The sales relay drive circuit for a vending machine of the present invention is a vending machine that sequentially operates each device related to sales at a predetermined timing to perform sales, and the relay for driving each of the devices described above is operated at the same timing. The relays within the same group are arranged in horizontal rows, and the types of groups are arranged in vertical rows to form a matrix circuit, and current is applied to each column by selecting each row and column. The present invention is characterized in that it is equipped with a switch means that can

[Summary of the Invention] This invention provides a method for controlling ordinary LEDs using a microcomputer.
In dynamic lighting matrix circuits, it is not possible to light up any combination of LEDs at the same time, but it is possible to light up LEDs in the same row in a matrix circuit at the same time. In the related operations, devices that overlap in time and devices that do not overlap are arranged, and relays that drive devices that operate simultaneously are arranged in the same row of a matrix circuit.

[Example] The following is a description of this invention! An example will be described for a cup-type beverage vending machine.

This vending machine sells hot powder drinks (there are two types: coffee and premix; premix refers to drinks that do not require added ingredients such as sugar or cream), cold powder drinks ( Two types of coffee and premix) and syrup drinks (two types) can be sold.

FIG. 2 shows the circuit of equipment related to vending machine sales. To minimize the number of sales relays,
CMI~GM4 raw material motor! ! , HVI, 1-IV2
Hot water valve 12, KMI, KM2 stirring motor 13, C
Cold water valve for VI, CV2 powder! 4 are provided with common relay contacts XGM, XHV, XKM, and XCV, respectively.

This is possible because coffee and premix are never sold at the same time.

By the way, FIG. 3 shows the timing at which these devices operate when each beverage is sold. Looking at this figure, it can be seen that, for example, in the case of hot powder beverages, there is a slight overlap in time between taking out the cup and taking out the hot water, but there is no overlap in time between taking out the cup and taking out the ingredients. Based on the sales time chart of FIG. 3, combinations of simultaneous operations in beverage sales are summarized as shown in Table 1. Table 2 As shown in this table, the simultaneous operation patterns of each sales relay can be classified into nine types, #1 to #9. Table 2 shows the grouping of sales relays that satisfy all nine patterns. That is, in Table 2, for example, in group B, xlS, XHV, XGM, XKM, XI,
Eight sales relays Xy, XI, X4 can operate simultaneously in any combination, and pattern #2 is X HV , X l , X t , X
K.M., X.G.M.

Seven sales relays XI and X4 operate at the same time, and all of these relays are included in group B. Also, #4 pattern is XI-IV, XGM.

X,,Xt,XI Like this A, B, C
With these three groups, nine patterns #l to #9 can be satisfied. FIG. 1 is a circuit diagram in which sales relays are arranged in a matrix according to the grouping shown in Table 2.

! 1030 has output ports of pt-ps and P9~pH, and boats PI-P8 are connected as vertical columns via leased buffers B1~BB, respectively, and boat P9
-P11 form a matrix as horizontal columns via sink-type buffers B9-Bll, respectively. Relays belonging to the A group are connected to the column of buffer B9, and relays XPCM, XI(V
, XGM, XCV.

x, , xt, and Xi X4+ are connected, respectively. Relays belonging to group B are connected to the row of buffer 1310, and relays XIS and X are connected to boat PI and boat P4.
The KSs are connected to each other. A relay belonging to the C group is connected to the column of buffer B11, and the output port P
Relays XSCM, XTV, X for 2 to P6
W V , X s , and X s are connected to each other. , D1 to D22 are diodes necessary for matrix formation.

With the above configuration, for example, when output boat P9 is selected,
,XGM,XCV,X,,Xt,Xs.

X4 enters the operational standby state, and at this time, by arbitrarily selecting one of the output ports P1 to P8, the above-mentioned relays can be arbitrarily turned on, and the relays for each group can be arbitrarily turned on and off. In this embodiment, there are 15 sales relays, so 15 output ports and buffers are required in a conventional control circuit, but by configuring a matrix as in this embodiment, both output ports and buffers are 11. become individual.

[Effects of the Invention] As explained above, the present invention is configured by connecting relays that drive devices temporally overlapping in the vending operation of a vending machine to the same row of a matrix circuit, so that output ports and buffers are connected to each other. The number of controllers is reduced, making it possible to reduce the space and cost of the control unit.

[Brief explanation of the drawing]

Fig. 1 is a control circuit diagram of a relay showing one embodiment of the present invention, Fig. 2 is a circuit diagram of equipment related to sales, Fig. 3 is a time chart of the operation of the circuit diagram in Fig. 2, and Fig. 4 is a It is a conventional control block diagram.

Claims (1)

[Claims] (1) In a vending machine that performs sales by sequentially operating each device involved in sales at a predetermined timing, the relays that drive each of the above devices are divided into groups according to devices that operate at the same timing, and the relays in the same group are A vending machine characterized by arranging relays in horizontal rows and arranging group types in vertical rows to form a matrix circuit, and equipped with switch means that can select each row and row to cause current to flow. Machine sales relay drive circuit.