KR960004804B1 - On-line management system and driving method of a vending machine - Google Patents

Abstract

The system is for effectively managing a number of vending machines by receiving the information on fault detection, current sales status and others via telephone lines. It comprises a micro controller(21) controlling data transmission; a signal generator(22) modu;ating the input signal into DTMF signal; a transmission signal filter(23) eliminating noise from the modulated signal; an amplifier(24) connected to an input terminal of the filter(23); a switch(25) controlling the signal transmission; a communication circuit(26) forming a signal transmission and reception path; another filter(27) filtering the reception signal; a signal analyser(28) determining which commands arrive.

Description

Online management system and operation method of vending machine

1 is an overall block diagram of an online management system of a vending machine according to an embodiment of the present invention,

2 is a detailed circuit diagram of a medium width part of a transmission signal filter part and a reception signal filter part according to an embodiment of the present invention;

3 is a detailed circuit diagram of a transmission / reception switching unit and a communication circuit unit according to an embodiment of the present invention.

4 is a circuit diagram of a data input / output unit and an address decoder according to an embodiment of the present invention.

5 is an operation flowchart of the vending machine controller according to the embodiment of the present invention,

6 is a flowchart illustrating an operation of the vending machine side demodulation control unit according to the embodiment of the present invention.

The present invention relates to an on-line management system and a driving method of a vending machine (abbreviated as "vending machine"), and more specifically, an administrator causes an abnormality of the vending machine, current sales accounting, and current operation. The present invention relates to an online management system and a driving method of a vending machine that can receive information on status and the like through a telephone line, accumulate and aggregate data and store data for a certain period of time, and efficiently remotely manage a plurality of vending machines.

After being installed in a certain place, there is a trend that is widely used as a new sales method between the vending machine and the seller and the buyer who can automatically sell various products according to the simple operation of the buyer even if the seller does not stay permanently.

The vending machine manages the vending machine and repairs the product that is out of stock after the manager who manages the vending machine visits the place where the vending machine is installed, checks the operation status of the vending machine, grasps the quantity of the product. You can manage this by supplementing it.

However, the above-mentioned conventional vending machine not only wastes a lot of manpower and time because the manager visits the vending machine installation site and checks the operation state of the vending machine and the quality of the product. When this product is out of stock, sales are reduced by failing to repair and replenish goods on time, and there is a defect such that a lot of power is consumed without the need by continuing to run the vending machine even at a time when sales are rarely generated, such as at night.

In order to eliminate such defects, there is a technology related to a communication check device that allows an administrator to repair and replenish goods in a timely manner by notifying the manager using a telephone line immediately when a vending machine breaks down or a product is out of stock. Korean Patent Application Publication No. 90-11230 (application date: December 30, 1988 AD) has been disclosed in the "communication check device of the vending machine".

The above-mentioned "communication checking device of the vending machine" is used to notify the manager by using the telephone line in case of the failure of the vending machine and the shortage of materials, and also to manage the vending machine by notifying the manager of the sales amount under the control of the manager. Has operating characteristics that can be controlled remotely.

However, the conventional "communication checking device of a vending machine" has a disadvantage that it is very difficult to carry out the specific means for the data demodulation and demodulation process, which is essential when data is transmitted and received using a telephone line. There is this.

In addition, the conventional " communication checking device of the vending machine " controls all operations related to the vending machine and the remote data communication with a single microcomputer, so that when the user purchases the vending machine, the remote data communication function is additionally added. There is inconvenience that cannot choose.

Accordingly, an object of the present invention is to solve the above-mentioned disadvantages, and by configuring a system using a specific modulation / demodulation control circuit that can remotely control a plurality of vending machines through a telephone line, an administrator causes an abnormality of the vending machine. In addition, the present invention provides an online management system and a driving method of a vending machine that can easily manage information on a current sales amount, a current operating state, and the like through a computer.

In order to achieve the above object, the present invention provides an error code of the vending machine, an error code of the vending machine, and a current operation state of the vending machine whenever there is a call from the vending machine side modulation / demodulation control unit, a failure of the vending machine, or a constant communication interval time. A vending machine controller for transmitting information on the sales aggregation, etc., to the vending machine side demodulation control unit; When there is a call from the vending machine controller or a call from the manager side demodulation control unit, the machine receives the data from the vending machine controller and modulates it into a dual tone multi frequency (DTMF) signal and transmits the data to the manager side demodulation control unit via a telephone line. Wow ; A manager side demodulation control unit which receives the information signal of the vending machine side demodulation control unit transmitted through the telephone line and transmits it to a computer; A data input / output unit connected between the manager side demodulation control unit and a computer to form a passage for bidirectional transmission of data; A computer connected to the data input / output unit for transmitting and receiving information to and from the manager side demodulation control unit; It consists of an address decoder which designates the device address of the data input / output unit according to the address output signal of the computer.

According to another aspect of the present invention for achieving the above object, when the power supply of the vending machine side demodulation control unit is applied, it is determined whether the vending machine side demodulation control unit is mounted after the initialization and the vending machine side demodulation control unit is mounted. Determine whether to change the vending machine's unique number, the administrator's phone number, the communication interval time, etc., and change it to a new value when changing it, and determine whether the communication interval has been reached when the failure has not occurred. If the communication interval time has not been reached, check if there is a call from the vending machine demodulation control section.If the vending machine has failed, the communication interval has timed or if there is a call from the machine Information about the sales, A vending machine controller side which continuously transmits to the vending machine side demodulation control unit and repeats the above process by controlling the sale of the vending machine and then branching to the step of mounting and controlling the demodulation control unit; When the power is applied, after initializing, it self-diagnoses the drawing status of the board acting as the vending machine modulation / demodulation control unit, and transmits the self-diagnosis result to the vending machine controller to transmit it to the vending machine controller. After displaying the operation status of the system, it is checked whether there is a call from the administrator side, if there is no call from the administrator side, it is determined whether there is a call from the vending machine controller, and when there is a call from the vending machine controller or a call from the manager layer. Receives information on the vending machine fault code, vending machine operation status, sales counting, etc. from the vending machine controller, dials the manager side, transmits the received information from the vending machine controller to the manager side, and confirms that the transmission is completed correctly. By a branch to the checking step, if the administrator side call eoteul consists of a vending machine modem controller-side control drive method for continuously repeating the above procedure.

With reference to the accompanying drawings, a preferred embodiment that can easily implement this invention by the above-described configuration will be described in detail.

1 is an overall block diagram of an online management system of a vending machine according to an embodiment of the present invention.

As shown in FIG. 1, the online management system of the vending machine according to the embodiment of the present invention includes a vending machine controller 10 installed in the vending machine, a vending machine controller 10 and an input / output end connected to each other. Transmit and receive signal amplification connected to the vending machine side demodulation control unit 20A, the manager side demodulation control unit 20B connected to the vending machine side demodulation control unit 20A via the telephone rotation 30, and the manager side modulation and demodulation control unit 20B. A unit 40, a speaker 50 having an input terminal connected to an output terminal of the transmission / reception signal amplifier unit 40, a data input / output unit 60 having an input / output terminal connected to the manager side demodulation control unit 20B, and A personal computer (PC) 70 having an input / output terminal connected to the data input / output unit 60 and an input terminal connected to the personal computer 70, and an output terminal connected to the data input / output unit 60. An address decoder 80 and an output device 90 having an input terminal connected to an output terminal of the personal computer 70.

The configuration of the vending machine side demodulation control unit 20A and the manager side demodulation control unit 20B includes a micro-controller 21 and a transmission signal generator having an input terminal connected to an output terminal of the micro controller 21. 22, a transmission signal filter unit 23 having an input terminal connected to the output terminal of the transmission signal generator 22, an amplifying unit 24 having an input terminal connected to the output terminal of the transmission signal filter unit 23, and A transmitter / receiver switching unit 25 having an input terminal connected to an output terminal of the microcontroller 21, a communication circuit unit 26 connected to an output terminal of the transmission / reception switching unit 25 and the amplifier unit 24, and a communication circuit unit. To the received signal filter unit 27 connected to the receiving signal filter unit 27, and to an output terminal of the received signal filter unit 27, and to an output terminal connected to the microcontroller 21. Are made identical to each other.

In the embodiment of the present invention, the TMP47C660 chip manufactured by Toshiba Corp. is used as the microcontroller 1, and as the transmission signal generator 22, a TP5088 chip (DTMF Generator for Binary Data, manufactured by National Semiconductor) is used. ) And the KT3170 chip is used as the reception signal analyzer 28, but the technical scope of the present invention is not limited thereto.

2 is a detailed circuit diagram of a filter unit including a transmission signal filter unit, an amplifier unit and a reception signal according to an embodiment of the present invention.

As shown in FIG. 2, the configuration of the filter unit 23 with the transmission signal according to the embodiment of the present invention includes a resistor R231 connected between the transmission signal generator 22 and the ground, and the transmission signal generator 22. FIG. Capacitor (C231) having one terminal connected to the resistor), a resistor (R232) having one terminal connected to the other terminal of the capacitor (C231), and a capacitor connected between the other terminal of the resistor (R232) and the ground. (C232), a resistor (R233) having one terminal connected to the connection point of the resistor (R232) and the capacitor (C232), a capacitor (C233) connected between the other terminal of the resistor (R233) and ground, A resistor R234 having one terminal connected to the connection point of the resistor R233 and the capacitor C233, and the capacitor C234, resistor R234 and the capacitor connected between the other terminal of the resistor R234 and the ground. A resistor R235 is connected to one terminal of the connection point C234.

Also, as shown in FIG. 2, the configuration of the amplifier 24 according to the embodiment of the present invention includes a resistor R241 connected between the other terminal of the resistor R235 of the transmission signal filter unit 23 and the ground. A capacitor C241 having a non-inverting input terminal connected to a connection point of the resistors R235 and R241 and an inverting input terminal connected to a grounded operational amplifier OP241 and one terminal connected to an output terminal of the operational amplifier OP241, The resistor R242 is connected to one terminal of the other terminal of the capacitor C241.

Also, as shown in FIG. 2, the configuration of the reception signal filter unit 27 according to the embodiment of the present invention includes a resistor R271 having one terminal connected to the other terminal of the resistor R242 of the transmission signal amplifier 24. A capacitor C271 connected between the other terminal of the resistor R271 and ground, a resistor R272 having one terminal connected to a connection point between the resistor R271 and the capacitor C217, and the other terminal of the resistor R272. A capacitor C272 connected between the ground and the ground, a resistor R273 having one terminal connected to the connection point between the resistor R272 and the capacitor C272, and a capacitor C273 having one terminal connected to the other terminal of the resistor R273. And a resistor R274 having one terminal connected to the other terminal of the capacitor C273 and the other terminal connected to the reception signal analyzer 28.

3 is a detailed circuit diagram of a transmission / reception switching unit and a communication circuit unit according to an embodiment of the present invention.

As shown in FIG. 3, the configuration of the transmission / reception switching unit 25 according to the embodiment of the present invention includes the resistors R251 and R252 and the resistors R21 and R252 connected in series between the grounds of the microcontroller 21. The base is connected to the junction of the emitter and the emitter is grounded transistor (Q251), the cathode is connected to the power supply voltage (Vcc), the anode of the diode (D251) connected to the collector of the transistor (Q251), and the cathode of the diode (D251) and The base is connected to the relay (RY251) having the coil terminal connected between the anode, the resistors R253 and R254 connected in series between the microcontroller 21 and the ground, and the connection point of the resistors R253 and R254, and the emitter is grounded. A transistor Q252 and a resistor R255 having one terminal connected to the collector of the transistor Q252.

Also, as shown in FIG. 3, the configuration of the call circuit unit 26 according to the embodiment of the present invention includes a pair of capacitors C268 and C269 connected between the telephone line 30 and the ground, and the telephone rotation 30 and A line filter coil F261 connected between the switch terminals of the relay RY251 of the transmission / reception switching unit 25, a capacitor C261 having one terminal connected to the switch terminal of the relay RY251 of the transmission / reception switching unit 25, The bridge diode B261 connected to the other terminal of the capacitor C261, the capacitor C262 and the zener diode Z262 connected in parallel to the output terminal of the bridge diode B261, and the output terminal of the bridge diode B261. A resistor R261 having one terminal connected thereto, an optical coupling element P261 having a light emitting diode connected to the other terminal of the resistor R621, a light receiving transistor collector and a power supply voltage Vcc of the optical coupling element P261. A resistor R262 connected between the light coupling element P26 A capacitor C263 connected between the light-receiving transistor collector and the emitter of 1), a capacitor C264 connected between the relay RY251 of the transmission / reception switching unit 25 and the line filter coil F261, and a transmission / reception The bridge diode B262 connected between the relay RY251 of the switching unit 25 and the line filter coil F261, the transistor Q261 having an emitter connected to the bridge diode B262, and a transistor ( A resistor RR263 connected between the emitter and the base of Q261, a resistor R264 having one terminal connected to the base of the transistor Q261, and the other terminal of the resistor R255 of the transmission / reception switching unit 25. And the light-emitting diode connected between the power supply voltage Vcc and the light-emitting transistor P262 connected between the bridge diode B262 and the other terminal of the resistor R264, the collector and the bridge diode of the transistor Q261. R connected between (B262) 265, the capacitors C262 and C266 connected in series between the collector of the transistor Q261 and the bridge diode B262, a transformer T261 connected between both terminals of the capacitor C266, and a transformer T261. It consists of a capacitor (C267) connected between both terminals of.

4 is a circuit diagram of a data input / output unit and an address decoder according to an embodiment of the present invention.

As shown in FIG. 4, the configuration of the data input / output unit 60 according to the embodiment of the present invention is such that the input / output terminals PA0 to PA3 and PC4 to PC7 are connected to the microcontroller 21 of the manager side modulation / demodulation control unit 20B. A programmable peripheral interface 61 connected to the read bus write signal lines / RD and WR of the system bus, respectively, and a data terminal of the programmable peripheral interface 61; Input / output terminals B1 to B8 are connected to D0 to D7, and input and output terminals A1 to A8 are connected to data signal lines D0 to D7 of the system bus, and a gate terminal is connected to an output terminal of the address decoder 80. / G) consists of a bus transceiver 62 to which it is connected.

In the embodiment of the present invention, an 8255A chip (Programmable Peripheral Interface (PPI)) manufactured by Intel (Intel) is used as the programmable peripheral interface 61, and the 74LS245 chip (Octal Bus Transceivers with 3) is used as the bus transceiver 62. -State Outputs), but the technical legislation of the present invention is not limited thereto.

Also, as shown in FIG. 4, the configuration of the address decoder 80 according to the embodiment of the present invention includes a capacitor C81 connected between the power supply voltage Vcc and the ground, and the address enable signal line AEN of the system bus. Is connected to the gate terminal (/ G), the input terminals P0 to P7 are connected to the address signal lines A2 to A9 of the system bus, and the input terminals Q2, Q3, Q6 and Q7 are connected to the power supply voltage Vcc. Is connected, and the comparator 81 is connected to the input terminals Q0, Q1, Q4, and Q5 to ground.

The embodiment of the present invention uses 74LS688 chip (8-Bit Identity Comparators) as the comparator 81 described above, but the technical scope of the present invention is not limited thereto.

5 is an operation flowchart of the vending machine controller according to the embodiment of the present invention.

As shown in FIG. 5, the operation of the vending machine controller according to the exemplary embodiment of the present invention includes a start step 51 of performing initialization when power is applied and a step 520 of determining whether the vending machine side demodulation control unit is mounted. Determining whether to change the vending machine unique number, the administrator side phone number, the communication interval time, etc., when the vending machine side modulation and demodulation control unit is mounted, and the vending machine unique number, the administrator side phone number, the communication interval time, etc. In the case of changing the step of resetting it (540), the step of determining whether the failure of the vending machine (550), the step of checking whether the communication interval time when the failure of the vending machine has occurred (560), Checking whether there is a call from the vending machine side demodulation control unit when the communication interval time has not elapsed, and the vending machine has a failure or the communication interval. When the time comes or there is a call from the vending machine demodulation control unit, transmitting information on the vending machine failure code, the vending machine operation state, the sales total, etc. to the vending machine side demodulation control unit (580), and after the vending machine is controlled, the modulation and demodulation control unit is mounted. Branching to the inspection step 520 consists of a step 590 of continuously repeating the above process.

6 is a flowchart illustrating an operation of the vending machine side demodulation control unit according to the embodiment of the present invention.

As shown in FIG. 6, the operation of the vending machine side demodulation control unit according to an embodiment of the present invention includes a start step 610 of performing initialization when power is applied, and an operation state of a board serving as the vending machine side demodulation control unit. In operation 620, and transmitting the self-diagnosis result to the vending machine controller, displaying the operation state of the board through the display device connected to the vending machine controller 630, and checking whether there is a call from the manager. 640, a step 650 of determining whether there is a call from the vending machine controller when there is no call from the manager side, a vending machine fault code from the vending machine controller when there is a call from the vending machine controller or a call from the manager side. Receiving information on the operation status, the sales aggregate, etc. (660) and the vending machine after dialing the administrator side Step 670 of transmitting the information received from the controller to the manager side, and if the information is properly transmitted after confirming that the transmission is completed properly, branching to the manager side hole inspection step 640 to continuously repeat the above process Step 680 is made.

The operation of the online management system and the driving method of the vending machine according to the embodiment of the present invention by the above configuration and operation sequence are as follows.

When power is applied to the vending machine, the program stored in the internal memory of the vending machine controller 10 is executed to start the vending machine controller 10.

When the operation of the vending machine controller 10 starts, the vending machine controller 10 first initializes the variable and then checks whether the vending machine side modulation / demodulation control unit 20A is mounted.

When the vending machine side demodulation control unit 20A is connected to the vending machine, the vending machine controller 10 receives information about the self-diagnosis result from the microcontroller 21 of the vending machine side demodulation control unit 20A and displays the display device (not shown). ), Check whether the user changes the vending machine's unique number, administrator's number, and communication interval time.

When the vending machine side demodulation control unit 20A is attached to the vending machine, when power is applied to the vending machine side, the program stored in the internal memory of the microcontroller 21 of the vending machine side demodulation control unit 20A is executed to generate the vending machine side demodulation control unit. The microcontroller 21 of 20A starts operation. When the microcontroller 21 of the vending machine side demodulation control unit 20A is operated, the microcontroller 21 of the vending machine side demodulation control unit 20A executes self-diagnosis after performing initialization and returns the result to the vending machine controller 10. By the transmission, the vending machine controller 10 causes the display device to display that the vending machine side modulation / demodulation control unit 20A is properly installed.

The vending machine controller 10 receives the above information through an input device (not shown) such as a keyboard and changes it to a new value when the user wants to change the vending machine unique number, the manager's phone number, and the communication interval time. By resetting the vending machine unique number, the manager's phone number, the communication interval time.

Next, the vending machine controller 10 checks whether the vending machine has failed from various types of sensors (not shown) installed in the vending machine, and if the vending machine has failed, the corresponding fault code and the current vending machine operating state and sales aggregate Information on the amount of money and the like is transmitted to the microcontroller 21 of the vending machine side demodulation control section 20A.

If there is no failure in the vending machine, the vending machine controller 10 checks whether the communication interval time is set by the user in advance, and if the communication interval time is reached, the current vending machine operation state and the sales total Information about the amount of money and the like is transmitted to the microcontroller 21 of the vending machine side demodulation control section 20A.

When the communication interval time has not elapsed, the vending machine controller 10 checks whether there is a call from the micro gun controller 21 of the vending machine side demodulation control unit 20A, and then the microcontroller 21 of the vending machine side demodulation control unit 20A. When a call is received from the controller, information on the current vending machine operation state and the amount of sales accumulated amount is transmitted to the microcontroller 21 of the vending machine side modulation / demodulation control unit 20A.

However, if there is no call from the microcontroller 21 even if the vending machine side demodulation control unit 20A is not mounted or if the vending machine side demodulation control unit 20A is mounted, the vending machine controller 10 executes a routine for controlling the vending machine sales. After that, branching to the step of checking whether the vending machine side modulation / demodulation control unit 20A is mounted is repeated repeatedly until the supply of power is stopped.

The microcontroller 21 of the vending machine side demodulation control unit 20A transmits the diagnosis result to the vending machine controller 10 and checks whether there is a call from the manager side demodulation control unit 20B.

A method of checking that the vending machine side demodulation control unit 20A has made a call from the manager side demodulation control unit 20B is performed by an interrupt, and the detailed operation thereof is as follows.

When a call and information signal from the manager side modulation / demodulation control unit 20B is input to the call circuit section 26 through the telephone line 30, the call and information signal is inputted to the capacitor pairs C268 and C269 of the call circuit section 26. After the noise is removed through the line filter coil F261, the signal is input to the bridge diode B261 through the relay RY251 of the transmission / reception switching unit 25.

The bridge diode B261 of the communication circuit unit 26, when there is an input of the above-mentioned signal, performs full-wave rectification, converts it into a DC voltage signal, and outputs it to the optical coupling element P261 to drive the optical coupling element P261. .

When the optical coupling element P261 is driven, the voltage charged in the capacitor C263 is discharged so that the low interrupt (/ NT) signal is input to the microcontroller 21 of the vending machine side modulation / demodulation control unit 20A.

Therefore, the microcontroller 21 of the vending machine side demodulation control unit 20A detects the call of the manager side demodulation control unit 20B by checking the interrupt signal / NT described above.

When there is a call from the manager side demodulation control section 20B, the microcontroller 21 of the vending machine side demodulation control section 20A outputs a high state signal to the transmission and reception switching section 25 so that the transistor of the transmission and reception switching section 25 can be Q251, Q252) is turned on.

When the transistor Q251 of the transmission / reception switching unit 25 is turned on, the relay RY251 is operated so that a connection path between the relay RY251 and the bridge diode B261 in the communication circuit unit 26 is connected to the relay R261 and the bridge diode ( B262) is connected to the connecting passage. In addition, when the transistor Q252 of the transmission / reception switching unit 25 is turned on, the optical coupling element P262 is operated to turn on the transistor Q261.

When the relay R251 is operated to form a connection path between the relay RY251 and the bridge diode B262 in the call circuit unit 26, the input signal is blocked in the bridge diode B261, thereby turning on the optical coupling element P261. The high state signal of the capacitor C263 which is turned off and thus charged by the power supply voltage Vcc is input to the microcontroller 21 as the interrupt signal / NT.

At the same time, the information signal of the manager-side modulation / demodulation control unit 20B inputted to the call circuit unit 26 through the telephone line 30 is transmitted to the line filter coil F261, the relay RY251 of the transmission / reception switching unit 25 and the call circuit unit ( After the bridge diode B262 of the transistor 26, the transistor Q261 and the transformer T261 are transmitted to the reception signal filter 27.

The signal input to the reception signal filter unit 27 is output to the reception signal analysis unit 28 after the noise is removed by the reception signal filter unit 27.

The received signal analyzing unit 28 analyzes what command the input signal is, and then outputs the result to the microcontroller 21 of the vending machine side demodulation control unit 20A. The microcontroller 21 executes a control operation according to the command signal input from the received signal analyzer 28.

If there is no call from the manager side demodulation control section 20B, the microcontroller 21 of the vending machine side demodulation control section 20A checks whether there is a call from the vending machine controller 10.

If there is a call from the manager side demodulation control unit 20B or a call from the vending machine controller 10, the microcontroller 21 of the vending machine side demodulation control unit 20A calls the vending machine controller 10 to call the vending machine controller 10. Information is received from the current vending machine operating state and the amount of sales aggregated from.

Next, the microcontroller 21 of the vending machine side demodulation control unit 20A transmits the above information to the manager side demodulation control unit 20B by dialing the manager side via the telephone line 30. The transmission process of the information performed by the vending machine side modulation / demodulation control unit 20A is as follows.

The microcontroller 21 of the vending machine side modulation / demodulation control unit 20A transmits a data signal relating to the above information to the transmission signal generator 22.

The transmission signal generator 22 modulates the digital information signal received from the microcontroller 21 into a DTMF signal and outputs the same to the transmission signal filter 23. Therefore, the output signal of the transmission signal generator 22 is input to the amplifier 24 after the high frequency and low frequency noise is removed while passing through the transmission signal filter 23.

The DTMF signal input to the amplifier 24 is adjusted to an input level by the resistor R241, and is then output to the call circuit unit 26 after the signal is amplified while passing through the operational amplifier OP241.

At this time, the microcontroller 21 of the vending machine side modulation / demodulation control unit 20A outputs a high state signal to the transmission / reception switching unit 25 to turn on the transistors Q251 and Q252 of the transmission / reception switching unit 25. When the transistor Q252 of the transmission / reception switching unit 25 is turned on, the relay RY251 is operated so that the connection path between the relay RY251 and the bridge diode B261 in the communication circuit unit 26 is connected to the relay R261 and the bridge diode. It is switched to the connecting passage with (B262). In addition, when the transistor Q252 of the transmission / reception switching unit 25 is turned on, the optical coupling element P262 is operated to turn on the transistor Q261.

When the relay RY251 is operated to form a connection path between the relay R261 and the bridge diode B262 in the call circuit unit 26, the input signal is blocked in the bridge diode B261, so that the optical coupling element P261 is turned on. The high state signal of the capacitor C263 that is turned off and thus charged by the power supply voltage Vcc is input to the microcontroller 21 as the interrupt signal / INT.

At the same time, the DTMF signal output from the transmission signal amplifying unit 24 and input to the transformer T261 of the communication circuit unit 26 passes through the turned-on transistor Q261, the bridge diode B261, the relay RY251, and the line filter coil. It passes to F261 and is transmitted to the manager side demodulation control unit 20B via the telephone line 30.

After the transmission is completed, the microcontroller 21 of the vending machine side demodulation control unit 20A checks whether the transmission is completed, and if the transmission is completed, outputs a low signal to the transmission / reception switching unit 25 so that the transmission and reception switching unit 25 The transistors Q251 and Q252 are turned off. When the transistors Q251 and Q252 of the transmission / reception switching unit 25 are turned off, the relay RY251 of the transmission / reception switching unit 25 is restored to its original position, and the operation of the optical coupling element P262 of the communication circuit unit 26 is stopped. Is blocked.

The operation of the manager side demodulation control unit 20B regarding the transmission and reception of the information signal of the vending machine side demodulation control unit 20A transmitted through the telephone line 30 is the same as the operation related to data transmission and reception of the vending machine side demodulation control unit 20A. The description is omitted to avoid duplication. However, the operation of the vending machine side modulation / demodulation control unit 20A is mainly performed in terms of transmission, and the operation of the manager side modulation / demodulation control unit 20B is different in that the operation related to reception is mainstream.

The information signal transmitted / received through the telephone line 30 is amplified by the transmit / receive signal amplifier 40 connected to the manager side demodulation control unit 20B, and the electrical signal amplified by the transmit / receive signal amplifier 40 is a speaker. It is inputted to 50 and converted into an audible signal, so that the administrator can visually check the transmission and reception of data.

The information signal transmitted to the microcontroller 21 of the manager side modulation / demodulation control unit 20B is transmitted to the personal computer 70 again and stored, thereby managing the current operating state and the sales aggregation state of the various vending machines managed by the manager. Can be easily and comprehensively recognized, and the data can be edited, archived and documented to efficiently manage and operate the vending machine.

The personal computer 70 assigns the addresses 330H to 333H through the address buses A2 to A9 to cause the address decoder 80 to connect the programmable peripheral interface 61 and the bus transceiver 62 of the data input / output unit 60. Let it work.

The personal computer 70 then uses the read signal / RD and the write signal WR to determine the data transfer direction of the bus transceiver 62 of the data input / output unit 60, and select the data buses D0 to D7. Send and receive information through

The personal computer 70 edits the information signals of the microcontroller 21 of the plurality of manager-side data demodulators 20B received through the data input / output unit 60, edits them, and outputs them through an output device. This makes it easy to comprehensively recognize this.

As described above, in the embodiment of the present invention, by configuring the system by using a specific modulation and demodulation control circuit that can remotely control a plurality of vending machines through a telephone line, the administrator has an abnormal occurrence of the vending machine, the current sales total, It is possible to provide an online management system and a driving method of a vending machine having an effect of easily managing information on the interval and annual sales accumulation, the current operation state, and the like. This effect of the invention can be used in the field of vending machines.

Claims (10)

A vending machine controller which transmits information on the vending machine's fault code and the vending machine's current operation status and current sales total to the vending machine's demodulation control unit whenever a vending machine side modulation and demodulation control unit is called, a vending machine fails, or a constant communication interval time is reached; A vending machine side demodulation control unit which receives data from the vending machine microcontroller and modulates it into a DTMF signal and transmits it to the manager side demodulation control unit via a telephone line when there is a call from the vending machine controller or a call from the manager side demodulation control unit; A manager side demodulation control unit which receives the information signal of the vending machine side demodulation control unit transmitted through the telephone line and transmits it to a computer; A data input / output unit connected between a manager side demodulation control unit and a computer to form a passage for bidirectional transmission of data; A computer connected to the data input / output unit for transmitting and receiving information to and from the manager side demodulation control unit; An online management system for a vending machine comprising an address decoder for designating a device address of a data input / output unit in accordance with a computer address output signal. 2. The apparatus of claim 1, wherein the vending machine side demodulation control section and the manager side demodulation control section comprise: a microcontroller (21) for controlling data transmission and reception operations; A transmission signal generator 22 connected to the microcontroller 21 and modulating an input signal into a DTMF signal; A transmission signal filter unit 23 connected to the transmission signal generator 22 to remove noise of an input signal; An amplifier 24 connected to an input terminal to the transmission signal filter unit 23 to amplify the input signal; A transmitter / receiver switching unit 25 which controls a transmission / reception path of data connected to the microcontroller 21; A communication circuit unit 26 connected to the transmission / reception switching unit 25 and the amplification unit 24 to form a transmission / reception path of data; A reception signal filter unit 27 connected to the communication circuit unit 26 to remove noise of the reception signal; An on-line management system of a vending machine, comprising a receiving signal filter (27) and a receiving signal analyzer (28) which is connected to the microcontroller (21) and analyzes which command the input signal is. The transmission signal filter unit 23 is a plurality of resistors (R231 ~ 235) and a plurality of resistors connected in a ladder form between the transmission signal generator 22 and the transmission signal amplifier (24). On-line management system of the vending machine, characterized in that consisting of capacitors (C231 ~ C234). 3. The amplifier of claim 2, wherein the amplifier 24 includes: a resistor R241 connected between the transmission signal filter unit 23 and ground; A non-inverting input terminal connected to the connection point of the transmission signal filter unit 23 and the resistor R241 and an inverting input terminal grounded; An online management system for a vending machine, comprising a capacitor (C241) having one terminal connected to an output terminal of an operational amplifier (OP241). The plurality of resistors R271 to R274 and a plurality of capacitors connected in a ladder form between the communication circuit unit 26 and the reception signal analyzer 28. C271 to C273), the on-line management system of the vending machine. The method of claim 2, wherein the transmission and reception switching unit 25 includes a resistor (R251, R252) connected in series between the microcontroller 21 and the ground; A transistor Q251 having a base connected to the connection points of the resistors R251 and R252 and the emitter grounded; A diode D251 having a cathode connected to the power supply voltage Vcc and an anode connected to the collector of the transistor Q251; A relay RY21 having a coil terminal connected between the cathode and the anode of the diode D251; Resistors R253 and R254 connected in series between the microcontroller 21 and ground; A transistor Q252 having a base connected to a connection point of the resistors R253 and R254 and an emitter grounded; An online management system for a vending machine, comprising a resistor (R255) having one terminal connected to a collector of a transistor (Q252). 3. The communication circuit according to claim 2, wherein the communication circuit section (26) comprises: a pair of capacitors (C268, C269) connected between the telephone line (30) and ground, respectively; A line filter coil F261 connected between the telephone line 30 and the switch terminal of the relay RY251 of the transmission / reception switching unit 25; A capacitor C261 having one terminal connected to the switch terminal of the relay RY251 of the transmission / reception switching unit 25; A bridge diode B261 connected to the other terminal of the capacitor C261; A capacitor C262 and a zener diode Z262 connected in parallel between the output terminals of the bridge diode B261; A resistor R261 having one terminal connected to the output terminal of the bridge diode B261; An optical coupling element P261 having a light emitting diode connected to the other terminal of the resistor R261; A resistor R262 connected between the light receiving transistor collector of the optical coupling element P261 and the power supply voltage Vcc; A capacitor C263 connected between the light receiving transistor collector and the emitter of the photocoupling element P261; A capacitor C264 connected between the relay RY251 of the transmission / reception switching unit 25 and the line filter coil F261; A bridge diode B262 connected between the relay RY251 of the transmission and reception switching unit 25 and the line filter coil F261; A transistor Q261 having an emitter connected to the bridge diode B262; A resistor R263 connected between the emitter and the base of the transistor Q261; A resistor R264 having one terminal connected to the base of the transistor Q261; An optical coupling in which a light emitting diode is connected between the other terminal of the resistor R255 of the transmission / reception switching unit 25 and the power supply voltage Vcc, and a light receiving transistor is connected between the bridge diode B262 and the other terminal of the resistor R264. Element P262; A resistor R265 connected between the collector of the transistor Q261 and the bridge diode B262; Capacitors C265 and C266 connected in series between the collector of transistor Q261 and the bridge diode B262; A transformer T261 connected between both terminals of the capacitor C266; An online management system for a vending machine, comprising a capacitor (C267) connected between both terminals of a transformer (T261). 2. The data input / output unit of claim 1, wherein the input / output terminals PA0 to PA3 and PC4 to PC7 are connected to the microcontroller 21 of the manager side modulation / demodulation control unit 20B. A programmable peripheral device interface 61 having input terminals / RD and WR connected to each of WR, WR); The input and output terminals B1 to B8 are connected to the data terminals D0 to D7 of the programmable peripheral device interface 61, and the input and output terminals A1 to A8 are connected to the data signal lines D0 to D7 of the system bus. An online management system for a vending machine, comprising a bus transceiver (62) having a gate terminal (/ G) connected to an output terminal of a decoder (80). The address decoder of claim 1, wherein a gate terminal (/ G) is connected to an address enable signal line (AEN) of a system bus, and an input terminal (P0 to P7) is connected to an address signal line (A2 to A9) of a system bus. And a comparator 81 having input terminals Q2, Q3, Q6, and Q7 connected to the power supply voltage Vcc, and having input terminals Q0, Q1, Q4, and Q5 connected to ground. Vending machine online management system. When the power supply of the vending machine side demodulation control unit is applied, it is determined whether the vending machine side demodulation control unit is installed after the initialization, and when the vending machine side demodulation control unit is installed, the vending machine unique number, the administrator side phone number, the communication interval time, etc. If it is decided to change it, if it is changed, it is reset to a new value, and if it is determined that the vending machine has failed, it is checked whether the communication interval time is reached when the failure does not occur. Checks whether there is a call from the control unit, and transmits information on the vending machine failure code, vending machine operation status, and sales aggregation to the vending machine modulation / demodulation control unit when there is a failure in the vending machine, communication interval time, or when there is a call from the vending machine demodulation control unit. Sales of vending machines By branching to the modem control unit mounted behind eohan inspection step and a vending machine controller side which continuously repeats the above process; When power is applied, self-diagnose the operation state of the board acting as the vending machine modulation / demodulation control unit after self-initialization and transmit the self-diagnosis result to the vending machine controller to display the operation state of the board through the display device connected to the vending machine controller. After that, it checks whether there is a call from the administrator side, judges whether there is a call from the vending machine controller when there is no call from the administrator side, and fails the vending machine controller from the vending machine controller when there is a call from the vending machine controller or a call from the manager side. Receives information on codes, vending machine operation status, sales accounting, etc., dials the administrator side, transfers the information received from the vending machine controller to the administrator side, and confirms that the transmission is completed correctly. Call check Automatically driving method of the vending machine, characterized in that the side of the vending machine comprising a modem control unit for continuously repeating the above steps by branching to step.