JPH02224087A - Carrying slave controller for automatic vending machine - Google Patents

Abstract

PURPOSE:To reduce the number of connecting lines and to decrease a malfunction or the fault of an ejection slave by superimposing a high frequency signal to the connecting line, which supplies power, and executing the transmission/ reception of a signal. CONSTITUTION:When coins are put in and a carrying signal is given to a carrying slave 23, a modulation signal is outputted in a modulator 40 and a superimposed to a connecting line 30. The signal is demodulated in a demodulator 41 and control commanding circuit 42 and a correspondent carrying mechanism VSO is discriminated. Then, a control command is outputted, a merchandise carrying mechanism VM is operated and a merchandise is carried out. When any one of sold-out detection switch S21-S24 is operated, such a sold-out signal is inputted to a modulator 50, modulated in the modulator 50, superimposed to the connecting line 30 and transmitted to a demodulator 51. Next, the signal is inputted to a discrimination circuit 52 and arrives at the carrying slave 23. It is obtained in the carrying slave 23 which switch is operated. Then, the information is transmitted to a master 1. Thus, the number of the connecting lines is reduced and the malfunction or the fault of the carrying slave can be decreased.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides a plurality of slave control devices (also simply referred to as slaves) that each share control, and a system that communicates with the slave control devices via a common serial transmission path. A slave control device in a distributed control type vending machine, which is equipped with a master control device (simply referred to as master) that allows each slave control device to perform its own control, and a plurality of product delivery mechanisms, especially modulation and demodulation functions. The present invention relates to an unloading slave control device which is provided with a.

Note that in the following figures, the same reference numerals indicate the same or corresponding parts.

[Prior Art 1] FIG. 5 is a block diagram showing the system configuration of this type of distributed control type vending machine. In the figure, 1 is a master, 2 (21-23) are slaves, and 3 is a serial transmission line connecting the master 1 and each slave 21-23. 21 of the slaves 2 is a coin mex slave (21) that controls a coin mechanism that accepts and pays out coins.
(also abbreviated as C7M slave). 22 is the door slave,
This slave 22 detects the operation of the product selection button S1, and detects the sale ready lamp (that is, the lamp that lights up the product selection button S1 that can be selected based on coin insertion) Ll, and the sold-out lamp (that is, the product is sold out. It also controls the blinking of the lamp (L2) that lights up to indicate that the product selection button S1 cannot be selected.

For convenience, the product selection button S i % saleable lamp L
1 and the sold-out lamp L2 are collectively referred to as a selection button, etc. SL.

Reference numeral 23 denotes an unloading slave, which controls the merchandise unloading mechanism VM, and is installed in a merchandise shelf (not shown) corresponding to each merchandise unloading mechanism VM, and detects whether the merchandise on the merchandise shelf is sold out. A detection signal of an off detection switch (switch is also abbreviated as SW) is inputted.

For convenience - 1.2 When the above-mentioned product delivery mechanism VM and sold-out detection switch S2 are referred to collectively, when referring to a corresponding set of two each of VM and S2, the delivery mechanism etc. is called vSO, and the VSO. When referring to multiple sets, the unloading mechanism etc. is called vS.

The master 1 communicates with each slave 2 via the serial transmission line 3.
While communicating necessary data with the slaves 1 to 23, each slave 2 performs its share of control.

FIG. 6 shows an example of the configuration of the unloading sleeve 23. As shown in the figure, one export slave 23 has multiple sold-out detection 5WS.
2 (S21-32n) and multiple product unloading machines @VM
(VMI to VMn). In other words, this unloading slave 23 detects a plurality of sold-out detections 5WS21~
The detection signal of S2n is inputted to determine the presence or absence of products on each product shelf, and the product sold-out data is transmitted to the master via the serial transmission line 3. Further, when carrying out a product, a large carry-out signal is outputted from the master 1, and a designated product carrying-out mechanism VM is operated by the carry-out signal via the carry-out drive unit 103.

[Problems to be Solved by the Invention] However, as can be seen from FIGS. 5 and 6, there are many signal lines connecting the product delivery mechanisms VMI to VMn and the delivery slave 23, so it is necessary to secure a space for passing the signal lines. is difficult,
As a result, there was a high risk that the signal line would be jammed, resulting in malfunction or a failure of the transport slave 23.

It is an object of the present invention to provide an unloading slave device for a vending machine that eliminates the problem described in 1- above and eliminates the risk of signal wires being jammed.

[Means for Solving the Problems] The present invention includes a product carry-out mechanism that carries out products, a carry-out slave that provides an operation signal to the product carry-out mechanism, and a master control that controls the carry-out slave via a transmission path. In a distributed control vending machine, the modulation device supplies power from the carry-out slave to the product carry-out mechanism via a connection line, modulates an operation signal of the carry-out slave, and superimposes it on the connection line; A demodulator and a control command circuit for determining the output of the demodulator and outputting a command are provided on the input side of the demodulator.

Further, in a distributed control type vending machine that includes a product delivery mechanism that delivers products, a delivery slave that provides an operation signal to the product delivery mechanism, and a master control device that controls the delivery slave via a transmission path, A modulation device that modulates and superimposes an output signal of the product delivery mechanism on a connection line that supplies power to the product delivery mechanism, a demodulation device that demodulates and outputs the modulated signal, and an output signal of the demodulation device. A discriminating circuit for discriminating the information and applying it to the export slave is provided.

[Operation] According to the present invention, a high-frequency modulated operation signal is superimposed on the latitude line connected to the product delivery mechanism, and the demodulation device and control command circuit on the product delivery mechanism side operate to operate a predetermined delivery mechanism. .

Further, a high frequency modulation operation signal is superimposed on the connection line from a modulation device on the product delivery mechanism side, and the signal is discriminated by a demodulation device and a discrimination circuit on the delivery slave side.

[Example 3] Fig. 3 is a block diagram showing the configuration of an embodiment of the present invention.
and a connection line that supplies power to the sold-out detection switch S2, and 40 is a modulation device that modulates the signal from the output slave 23 and superimposes it on the connection line 30. For example, connection line 3
A high frequency current (carrier) is superimposed on 0, and FSK modulation of the shift is applied to the carrier according to the input signal.

41 is a demodulating device provided on the side of the unloading machine 6'4vso, and a control command circuit 42 discriminates the demodulated signal and gives an operation command to the product unloading mechanism VM. Reference numeral 50 denotes a modulator, which sends the sell-out signal from the sell-off detection switch S2 to the demodulator 51. Reference numeral 52 denotes a discrimination circuit which discriminates the bow ' from the demodulator 51 and notifies the carry-out slave 23 whether the sold-out detection switch S2 has been operated.

In such a configuration, when a coin is inserted into the vending machine and a take-out number is sent from the master 1 to the take-out slave 23, the modulation device 40 outputs a modulation signal and superimposes it on the connection line 30. Demodulator 41, control command circuit 4
2, the corresponding delivery mechanism vS is demodulated as described above.
O is determined, a control command is output, and the product delivery mechanism VM
operates and the product is transported out. When a sold-out signal is output from the sold-out detection switch S2, the modulation device 50 and the demodulation device 5t
, is transmitted to the unloading slave 23 via the discrimination circuit 52.

FIG. 4 is a configuration block diagram for explaining the delivery mechanism in FIG. 3. In the figure, S21 to S24 are sold-out detection switches, and 801 to 304 are delivery solenoids. The sold-out detection switches S21 to S24. When any one of the above operates, this ``Kikiri Shinkyu'' is input to the modulation device 50,
The signal is modulated by the modulator 50, superimposed on the connection line 30, and transmitted to the demodulator 51. Then, a large amount of power is applied to the discrimination circuit 52 and the signal reaches the unloading slave 23 . Which sell-off switch has been operated in the carry-out slave 23 is obtained and sent to the master 1.

[Effects of the Invention] According to this invention, since signals are sent and received by superimposing a high frequency signal on the connection line that supplies power, the number of connection lines that are connected to each product delivery mechanism is eliminated, and the number of connection lines is extremely reduced. As a result, malfunctions and failures of the unloading slave can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a claim correspondence diagram showing the structure of this invention, FIG. 2 is a claim correspondence diagram showing the structure of this invention, FIG. 3 is a block diagram of the structure without showing an embodiment of this invention, and FIG. Configuration block diagram for explaining the unloading mechanism in the figure, No. 5
The figure is a block diagram of a conventional device, and FIG. 6 is a block diagram of a conventional export slave. 1... Master control device, 23... Export storage 1 knob,
40; 50...Modulation device, 41.51...Demodulation device, 42...Control command circuit, 52...Discrimination circuit. Figure 4 Figure 4 Figure 4

Claims (1)

[Scope of Claims] 1) Distributed control that includes a product carry-out mechanism that carries out products, a carry-out slave that provides an operation signal to this product carry-out mechanism, and a master control device that controls this carry-out slave via a transmission path. In this type of vending machine, a modulation device that supplies power from the delivery slave to the product delivery mechanism via a connection line, modulates the operation signal of the delivery slave and superimposes it on the connection line, and a demodulation device on the input side. 1. A take-out slave control device for a vending machine, comprising: a control device; and a control command circuit that determines the output of the demodulator and outputs a command. 2) In a distributed control vending machine that includes a product delivery mechanism that delivers products, a delivery slave that provides an operation signal to the product delivery mechanism, and a master control device that controls the delivery slave via a transmission path. , a modulation device that modulates and superimposes the output signal of the product delivery mechanism on a connection line that supplies power to the product delivery mechanism, a demodulation device that demodulates and outputs the modulated signal, and an output signal of the demodulation device. A dispensing slave control device for a vending machine, characterized in that the discriminating circuit is provided to the dispensing slave.