RU81822U1 - SELF-SERVICE TERMINAL WATCH TIMER - Google Patents

Abstract

The self-service terminal's watchdog timer includes an integrated digital interface converter 1, a first eight-bit microcontroller 2, a transistor microcircuit 3 for generating high-voltage control signals, and a relay unit 4 connected in series with the main inputs and outputs. Converter 1 is connected by input to the USB port of terminal 5 computer. The first microcontroller 2 is connected by additional inputs to a digital thermometer 6 of the terminal, a second eight-bit microcontroller 7, an external voltage converter 8 and a voltage stabilizer 9, as well as an end sensor (trailer) 10 for opening the terminal door and a connector (connector) 11 for connecting electronic keys (electronic keys i-Button) and is connected by the second output to the indicator of the operation of the timer operation mode (not indicated). Block 4 of the relay is connected by outputs to the modem 12 power input, computer switch 5, electric lock 13 and siren 14. An accelerometer 15 is connected to the input of the second microcontroller 7, and a signal LED (not indicated) is connected to the additional output. Cable 16 (DB9M) is used to connect microcontroller 2 to a voltage regulator (UPS). USB-USART (COM) Integrated Digital Converter 1 for connecting to a computer’s USB port. The second microcontroller 7 is made six-channel with the ability to convert information about the angle of inclination and shock. Block 4 of the relay is configured to create power control signals of the computer 5 and modem 12 to reboot the latter. The connector 9 for connecting to a voltage stabilizer is configured to turn off the terminal in the event of a drop in the supply voltage and turn on when it is restored. The first microcontroller 2 implements a larger amount of internal logic, has a larger data memory, flash memory and is made with low-voltage power consumption. At the same time, functionality was expanded, cost was reduced, service, installation and replacement were simplified, a circuit built with programmable elements was simplified, and high speed and reliability ensured by this were ensured.

Description

The utility model relates to automation, in particular, to software control devices and can be used as equipment to protect self-service payment terminals from software failures (freezes), power failures and mechanical influences, as well as to perform security functions.

Known software control devices RU No. 14298, 20185, 52500, 2101757, 2131619. 2173938, 2248089, 2256288, 2261470, 2287220, US No. 5995455, 6060980, 6084521, 6323777, 6948103, 7194665, 73501786, JP200200 No. , DE No. 102007004794.

Known timer with control, containing a register, a code comparison element and a pulse counter, the outputs of which are connected to the corresponding inputs of the number A of the code comparison element, the first and second elements And, D-trigger and a pulse generator, the output of which is connected to the clock input of the D-trigger and the first input of the first element And, the second input of which is connected to the output of the D-flip-flop, the output of the second element And is connected to the output bus, characterized in that the adder, the first and second OR elements, and the delay driver, whose output with is single with the clock input of the register and the low-order input of the adder number B, and the input is with the input bus and the first input of the first OR element, the second input of which is connected to the output of the first AND element, and the output is with the counting input of the pulse counter, the outputs of which are connected to the corresponding information inputs of the register, the outputs of which are connected to the corresponding inputs of the number A of the adder, the outputs of which are connected to the corresponding inputs of the number B of the code comparison element, the start bus is connected to the D-input of the D-trigger, R-input p histories corresponding to the inputs of the upper digits of the adder number B and the first inputs of the second OR element and the second element And, the second input of which is connected to the output A> of the code comparison element, the output = of which is connected to the second input of the second OR element, the output of which is connected to the reverse bus communication (RU 2173938).

Known device "Watchdog Service", containing a register

a state and a synchronization counter, characterized in that a clock pulse generator, an OR element, an initial setup circuit, an AND-OR element, a comparison circuit, a trigger are introduced into it, the information input of the status register being the information input of the device and designed to connect to the address / bus data, the n-bit output of the register is connected to the first input of the comparison circuit, the second input of which is connected to the n-bit output of the synchronization counter, the counting input of which is connected to the output of the clock generator, to which is also the CLK output of the device, the output of the initial installation circuit is the HDWRES output of the device and is connected to the first inputs of the OR and the AND-OR element and to the zero input of the trigger, the trigger output is the output of the NMI device, the output of the AND-OR element connected to the second input of the OR element and is the output "RESIN" of the device, the i-th digit (where i = 1, 2, ..., n) of the synchronization counter is connected to the third input of the AND-OR element, the fourth input of which is connected to the third input element OR and is the first control input of the device, the second in od which is the fourth input of the OR gate, a third control input device connected to the control input of the state register and the input of a fifth OR gate, whose output is connected to the control input of the counter synchronization, the comparison circuit output is connected to the trigger input of the installation. (RU 2131619).

Also known is the closest to the claimed in terms of its capabilities program control device comprising a program control unit, control inputs and outputs, an address code output and a bi-directional system bus data code bus, which are control inputs and outputs, address code output and a bidirectional data block code bus software control, respectively, reset input, inverse accident input of the main power supply voltage source, switching voltage source, power supply bus the main supply voltage connected to the first power inputs of the program control unit and the switched voltage source, a backup power supply bus connected to the second power input of the switched voltage source, the output bus of which is connected to the second power input of the program control unit, it further comprises technological control input, threshold element with triggering on start and release

according to the supply voltage level, a chopper equipped with three inputs and an output, and a controlled pulse shaper equipped with two outputs, two control inputs, a pulse input, a trigger edge input and a trigger zero input with a delay connected to the inverse reset input of the device, input the alarm signal of the main power supply source which is connected to the first control input of the pulse shaper, the first input of the chopper and the trigger input of the threshold element, the output of which is connected to the trigger input along the front of the pulse shaper, the second control input of which is connected to the technological control input of the device, the bus of the main supply voltage of which is connected to the power inputs of the threshold element, pulse shaper and chopper, the second input of which is connected to the first additional control output of the program control unit, the second the additional control output of which is connected to the pulse input of the pulse shaper, the first output of which is connected to the reset input program control block, which interrupt input coupled to an output chopper (RU 2261470, prototype).

The disadvantages of the known devices are the narrowness of functionality, the complexity of the circuit built using a large number of logic elements, and, due to this, insufficient speed and reliability.

The technical task of the utility model is to create an effective watchdog timer and expand the arsenal of watchdogs.

The technical result that provides the solution of the problem lies in expanding the functionality, reducing costs, simplifying maintenance, installation and replacement, simplifying the circuit built with programmable elements, and, due to this, high speed and reliability.

The essence of the utility model is that the self-service terminal's watchdog timer includes an integrated digital interface converter, a first eight-bit microcontroller, a high-voltage control signal generation chip and a relay unit connected in series with the main inputs and outputs, the converter being connected by an input to the terminal computer, the first microcontroller is connected by additional

inputs with a digital terminal thermometer, a second eight-bit microcontroller, an external voltage converter and a voltage regulator, as well as an end sensor for opening the terminal door and a connector for connecting electronic keys and is connected by a second output to a timer mode indicator, and the relay unit is connected by outputs to a modem power input , a computer switch, an electric lock and a siren, while an accelerometer is connected to the input of the second microcontroller, and a signal LED is connected to an additional output.

Preferably, the first microcontroller is made sixteen-channel with the ability to control time and control the logic of operation, the second microcontroller is made six-channel with the ability to convert information about the angle of inclination and shock, the relay unit - with the ability to create power control signals for the computer and modem to restart the latter, and the voltage regulator - with the ability turn off the terminal in case of power failure and turn on when it is restored, the interface converter is connected to USB computer port using a standard USB-COM adapter, the accelerometer is made touch, the indicator of the timer operation mode is made in the form of a yellow LED, and the signal LED is made in red. The watchdog timer is designed as a board for installation in the computer compartment of the terminal.

In the drawing of FIG. 1, a schematic block diagram of a watchdog timer is shown, FIG. 2 is an electrical diagram of a watchdog timer, and FIG. 3 is a connection diagram of a timer in a terminal.

The self-service terminal watchdog contains an integrated digital interface converter 1 (FT232BM - hereinafter referred to in brackets is the industrial name) connected in series with the main inputs and outputs, the first eight-bit microcontroller 2 (PIC16F628A), transistor chip 3 (ULN2003) for generating high-voltage control signals and a unit 4 relays. Converter 1 is connected by input to the USB port of terminal 5 computer. The first microcontroller 2 is connected by additional inputs to a digital thermometer 6 of the terminal, the second eight-bit microcontroller 7 (PIC12F629), an external voltage converter 8 (7805) and a voltage regulator 9, as well as an end sensor

(trailer) 10 for opening the terminal door and a connector (connector) 11 for connecting electronic keys (electronic keys i-Button) and is connected to the second output with an indicator of the operation mode of the timer (not indicated). Block 4 of the relay is connected by the outputs to the modem 12 power input, computer ON / OFF switch 5, electric lock 13 and siren 14. An accelerometer 15 is connected to the input of the second microcontroller 7, and an alarm LED (not indicated) is connected to the additional output. To connect microcontroller 2 to a voltage regulator. (UPS) serves cable 16 (DB9M).

USB-USART (COM) Integrated Digital Converter 1 for connecting to a computer’s USB port. Includes:

- Level converter for FIFO and control signals for interaction with 5 V logic;

- Built-in clock generator;

- 2 input / output channels;

- Built-in power-on reset circuit.

The first microcontroller 2 is made sixteen-channel with the ability to control time and control the logic of work.

The second microcontroller 7 is made six-channel with the ability to convert information about the angle of inclination and shock.

Block 4 of the relay is configured to create power control signals of the computer 5 and modem 12 to reboot the latter.

The connector 9 for connecting to a voltage stabilizer is configured to turn off the terminal in the event of a drop in the supply voltage and turn on when it is restored.

The first microcontroller 2 implements a larger amount of internal logic, has a larger data memory, flash-memory and is made with low-voltage power consumption mode, includes:

- 16 independent channels of input-output;

- 2 timers;

- Power-on reset function;

- Clock generator;

- Multiplexed output, (serves to control the power of the microcontroller and prevents the microcontroller from working incorrectly if the voltage drops below the permissible level)

The second microcontroller 7 (less expensive compared to the first microcontroller 2, has fewer resources) and is made with low-voltage power consumption, has in its composition:

- 6 independent input-output channels;

- 2 timers;

- Power-on reset function;

- Clock generator;

- Multiplexed output (used to control the power of the microcontroller and prevents the microcontroller from working incorrectly if the voltage drops below the permissible level).

Microcircuit 3 is made with a set of powerful composite keys with protective diodes at the output (not indicated). Generates powerful output signals, which allows you to use this chip to control the relay.

Digital thermometer 6 (DS18S20), manufactured by Dallas Semiconductor, is made with a measuring range from -55 to + 125C. Digital thermometer 6 measures the temperature in the computer compartment. The readings of thermometer 6 are transmitted on-line and displayed in the monitoring of the terminals.

The accelerometer 15 (ADXL202AE) is made touch-sensitive, the sensors are built on an iMEMS digital micromachine sensor from Analog Devices. The accelerometer 15, measuring the acceleration of the terminal, detects movement and impacts on the terminal body. The i-Button key body withstands mechanical shock of 500 G, the operating temperature range is from -40 ° C to + 85 ° C, they are not affected by magnetic and static fields, are tested for 10 years and are guaranteed to maintain the strength of the case with 1 million contacts with a reader.

The microcontroller 7 receives information from the accelerometer 15 about the change in acceleration. Converts data to the value of vibration, tilt and movement of the terminal, transfers information to microcontroller 2 and turns on, if necessary, a red LED.

The sensor 10 detects the opening of the terminal housing, transmits information

microcontroller 2 for transmitting statistical information to computer 5, and also includes a siren in case of unauthorized opening. The connector 11 transmits the authorization information to the microcontroller 2, which in case of successful authorization allows you to open the electric lock 13 of the terminal door and turns off the alarm.

The signal LED is red.

The yellow LED indicates the timer mode:

- Lit - waiting for power to be turned on (when the power is off);

- Off - when the control mode of the software (software) of computer 5 “maratl.exe” and feedback (OS) is turned off, it is performed on the computer that is part of the terminal - a self-service machine;

- Blinking - when the software monitoring mode is on, preferably “maratl.exe”;

- Flashing at a higher frequency - the 220 V power has been turned off

The timer is designed as a single board for installation in the computer compartment of the terminal. The watchdog board has a memory for recording 10 iButton keys with memorizing the person attached to the key and the rights assigned to this person.

The watchdog timer of the self-service terminal operates as follows.

When connected to a computer and modem, the watchdog timer receives information about malfunctions and can perform a hardware reboot of the equipment.

When diagnosing malfunctions in the OS or the payment acceptance program (if 30 minutes there is no software response), the watchdog timer restarts the computer 5.

When diagnosing a hang of modem 12 (which is an integral part of the terminal), the watchdog timer restarts modem 12.

Opening the electronic lock 13 of the terminal door is carried out after successful authorization using the electronic key.

The watchdog transmits information about the operation of the terminal to computer 5.

All timer settings are carried out in the configurator program operating on computer 5.

Voltage converter 8 converts +12 V voltage to a supply voltage suitable for microcircuits: +5 V.

The cable 16 connecting to the voltage stabilizer 9 fixes the on and off of an external 220 V power supply, which allows you to correctly complete the watchdog timer and turn it on when power is restored.

Technical characteristics of the timer as a whole:

- Supply voltage: 12 V,

- Operating temperature range: +10 ... + 40 ° С,

- Dimensions: 95 × 55 mm.

At the input of the microcontroller 2, a signal is received from the stabilizer 9 of the external 220 V power supply, which allows you to correctly complete the work of the terminal and turn it on when power is restored. The input of the microcontroller 2 receives signals from the trailer 10 of the door, the connector 11, as well as from the thermometer 6. The signals from the accelerometer 15 are fed to the inputs of the microcontroller 7, from the output of which they are sent to the microcontroller 2, and also control the signal red LED. The outputs of the microcontroller 2 through the chip 3, which generates high-voltage control signals, control the relay unit 4. Based on the signals from the microcircuit 3, the relay unit 4 creates a series of external signals that control the power of the computer 5, modem 12, the sound of the siren 14, the electric lock 13 and the timer indicator (yellow LED). Microcontroller 2 implements the internal logic of work. The timer, which is part of the microcontroller 2, counts the time. If in 30 minutes no signal of normal operation is received, a software reboot signal is generated.

Authorization in the security system is carried out using iButton electronic keys developed and manufactured by Dallas Semiconductor. The iButton case withstands mechanical shock of 500 G, the operating temperature range of these microcircuits is from -40 ° С to + 85 ° С, they are not affected by magnetic and static fields, are tested for 10 years and are guaranteed to maintain the strength of the case with 1 million contacts with reader. The owner of the machine can, through the settings menu in the program of the self-service machine, configure the sensitivity of the sensors of the security system and change the operating modes of the system.

All security system events are transmitted to the server and are available in the monitoring of the terminals, as well as at the request of the owner of the machine, an alert can be turned on via SMS to the indicated mobile phone.

The burglar alarm provides automatic recognition of faults, their registration and shutdown of faulty units.

The board 17 has a built-in monitoring system (not indicated) for the 220 V network voltage, which will correctly turn off the machine after disconnecting 220 V and resume the operation of the machine when voltage is restored in the 220 V network.

As in the case with the security system, automatic control of electrical circuits and fault detection is provided, as well as event logging on the server and notification via SMS messages.

Also, the owner of the machine can program the shutdown and turn on the machine according to the schedule.

The timer controls the modem 12, restoring its operation in the event of a hang, and provides non-stop operation of the self-service machine, controlling the operating system and program, overloading the terminal in case of failures.

At the same time, microcontroller 2 keeps statistics of various events, such as the number of terminal door openings, alarm triggering, attempts to select electronic keys. All controlled information is transmitted to the server and is available to the owner of the machine in on-line mode.

Thus, an effective watchdog timer was created and the arsenal of watchdog timers was expanded.

At the same time, functionality was expanded, cost was reduced, service, installation and replacement were simplified, a circuit built with programmable elements was simplified, and high speed and reliability ensured by this were ensured.

Claims (6)

1. A self-service terminal watchdog timer, comprising an integrated digital interface converter, a first eight-bit microcontroller, a high-voltage control signal generation chip and a relay unit, connected in series with the main inputs and outputs, the converter being connected by an input to a terminal computer, the first microcontroller connected by additional inputs to a digital terminal thermometer , a second eight-bit microcontroller, an external voltage converter and a stabilizer voltage, as well as with an end sensor for opening the door of the terminal and a connector for connecting electronic keys and is connected to the second output with an indicator of the timer operation mode, and the relay unit is connected to the outputs with the modem power input, a computer switch, an electric lock and a siren, while connected to the input of the second microcontroller an accelerometer, and to an additional output - a signal LED. 2. The watchdog timer according to claim 1, characterized in that the first microcontroller is made sixteen-channel with the ability to control time and control the logic of work, the second microcontroller is made six-channel with the ability to convert information about the angle of inclination and impacts, the relay unit - with the ability to create computer power control signals and a modem for rebooting the latter, and a voltage stabilizer with the ability to turn off the terminal in the event of a drop in the supply voltage and turn on when it is restored. 3. The watchdog timer according to any one of claims 1 and 2, characterized in that the interface converter is connected to the USB port of the computer using a standard USB-COM adapter. 4. The watchdog timer according to any one of claims 1 and 2, characterized in that the accelerometer is made touch. 5. The watchdog timer according to any one of claims 1 and 2, characterized in that the indicator of the timer operation mode is made in the form of a yellow LED, and the signal LED is made in red. 6. The watchdog timer according to any one of claims 1 and 2, characterized in that it is made in the form of a board for installation in the computer compartment of the terminal.