JP3611071B2 - Sales control device for vending machines mounted on vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vending machine that can be mounted on a vehicle.
[0002]
[Prior art]
In general, there are two important processes in vending machines.
When a power failure occurs, the memory is saved so that the memory data is not destroyed, and access to the memory is stopped.
If the output of a relay, etc. is kept on, the voltage applied to the load will be on-off-on during an instantaneous power failure (instantaneous power failure), and there is a risk that two products will be output. Stop all output. These processes are performed by monitoring the AC power supply.
In addition, the AC power supply for vehicles instantaneously stops at indefinite intervals and indefinite periods, and this instantaneous stop is a long time comparable to a power failure. Assuming that the above-described processing is performed during such a momentary stop, if a momentary stop occurs after the money has been inserted, the money will be taken into the vending machine.
[0003]
Therefore, conventional vending machines for onboard vehicles are:
1) Receiving AC power supply that stops instantaneously at a fixed period of time 2) Converted to DC by converter 3) Converted to AC by inverter 4) Converted to DC power supply for control by switch power supply, Inverter output is monitored by distinguishing from instantaneous power failure (including irregular power failure).
[0004]
[Problems to be solved by the invention]
Whether or not the vending machine can be mounted on the vehicle depends on whether or not there is a space for installing the controller having the functions 2) and 3). However, since such a controller is usually large in size, its installation space is generally not secured.
Therefore, this invention is providing the vending machine which can respond also to a small installation space.
[0005]
[Means for Solving the Problems]
In order to solve such a problem, in the present invention, an instantaneous power failure detection that detects at least an instantaneous power failure (instantaneous power failure) of an AC power source in a vending machine for mounting on a vehicle that receives two types of power sources of AC and DC from the vehicle And a power failure detection means for detecting a power failure including an indefinite interval of DC power supply and irregular power failure, and when the instantaneous power failure is detected by the power failure detection means, the AC power supply is restored. The product unloading operation is delayed until the power failure detection means detects the power failure of the DC power source including the instantaneous interruption of the indefinite feedback at indefinite intervals.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation, and FIG. 3 is a conceptual explanatory diagram of the present invention.
Here, both AC and DC are received from the vehicle. In FIG. 1, reference numeral 1 represents an AC power source, and reference numeral 2 represents a DC power source. Connected to the AC power supply 1 are an AC load 3 of a vending machine and a half-wave detection circuit comprising a relay contact 4 controlled by the DC power supply of the vending machine, a diode D, a resistor R, a photocoupler PC, and the like. This half-wave detection circuit monitors whether or not an instantaneous power failure (instantaneous power failure) has occurred in the AC power supply based on the presence or absence of a half-wave.
[0007]
On the other hand, a switching power supply 10 is connected to the DC power supply 2. The switching power supply 10 normally has an AC input of 100 V, but here the internal resistance constant of the switching power supply 10 is switched by the changeover switch 9 to make the input DC 100 V. This switching power supply 10 is composed of, for example, a DC-DC converter, and uses a DC power supply for a vehicle as a DC power supply (+ 24V, + 8V) for a vending machine, and a capacitor is provided on the secondary side (output side). Thus, when the vehicle DC power supply falls, the vehicle DC power supply falls to the main body slave 6 after a certain time delay.
[0008]
A Zener diode ZD and a comparator CP are provided to monitor the voltage of the DC power supply 2, and the master 5 performs a power failure when the output from the Zener diode ZD and the comparator CP, for example, the voltage becomes less than twice the control voltage. In order to prevent the memory data from being damaged, the data is saved and the memory is not accessed. 1 is a selection relay, 8 is a bend relay, 11 is a push button, 12 is a coin mech as a sales mechanism, and 13 is a memory of a bill validator.
That is, here, as shown in FIG. 3, power is supplied to the AC load based on the AC power supply and instantaneous power failure detection is performed, and power is supplied to the switching power supply based on the DC power supply and power failure is detected. Control units such as the master 5 and the main body slave 6 perform control based on these to drive the load.
[0009]
Next, the operation of FIG. 1 will be described with reference to FIG.
When the push button 11 is pressed in step S1, the master 5 determines whether there is an AC power supply via the half-wave detection circuit. If there is no power supply, it waits as it is (step S2). When there is a power supply or when there is a change from no power supply to presence, a carry-out command is issued to the main body slave 6 (step S3). When the carry-out command is received, the main body slave 6 determines an instantaneous stop from the presence or absence of a half-wave by the half-wave detection circuit, and turns on the selection relay 7 if there is a half-wave (step S4). Thereafter, the time during which the selection relay 7 is considered to have responded sufficiently is taken into account, and the bend relay 8 is turned on after 30 ms (steps S5 to S7).
[0010]
If a momentary power failure occurs before the bend relay 8 is turned on, the master 5 transmits a momentary power failure occurrence non-sale end to the master 5, so that the master 5 returns to the state before the carry-out command is transmitted, and again returns to the main body slave 6. A carry-out command is issued (step S8). Further, the bend relay 8 is turned on for 100 ms. If an instantaneous power failure occurs during this time, the main body slave 6 turns off the bend relay 8 and the selection relay 7 (steps S9 to S13) and sells them to the master 5. The end of occurrence of the intermediate power failure is transmitted (step S16). The master 5 stores the received time and sets the column as an independent column (step S17). Note that after the selection relay 7 is turned off in step S13, a subtractable signal is transmitted and subtracted (steps S14 and S15). These are processes to prevent the next sale from being affected because there is a possibility that commodities are jammed in the coin mech when the solenoids S1 to S20 shown in FIG. 1 are interrupted within 100 ms.
[0011]
【The invention's effect】
According to the present invention, since two types of power sources, AC and DC, are received from the vehicle, there is an advantage that the vending machine can be mounted on the vehicle without requiring a large space.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of the present invention.
FIG. 2 is a flowchart for explaining the operation of FIG. 1;
FIG. 3 is an explanatory diagram for explaining the concept of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... AC power supply, 2 ... DC power supply, 3 ... AC load, 4 ... Contact, 5 ... Master, 6 ... Main body slave, 7 ... Selection relay, 8 ... Bend relay, 9 ... Changeover switch, 10 ... Switching power supply, 11 ... Push button, 12 ... coin mech, 13 ... bill validator memory.

Claims (1)

A vending machine mounted on a vehicle that receives two types of power sources, AC and DC, from a vehicle, at least an instantaneous power failure detection means that detects an instantaneous power failure (instantaneous power failure) of the AC power source, an indefinite interval of the DC power source, A power failure detection means for detecting a power failure including a power failure, and when the momentary power failure detection means detects a momentary power failure of the AC power supply, delays the carry-out operation of the product until the AC power supply is restored, and the power failure detection means. A vending machine sales control device for a vehicle, which performs a vending control system stop processing when a power failure of a DC power source including an instantaneous feedback of indefinite feedback at indefinite intervals is detected.

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