RU6388U1 - REPORTING DEVICE - Google Patents

Abstract

A reading device containing a control and indication unit, an indication unit and a remote price setting panel, characterized in that a microprocessor is introduced into the logic board in the control and indication unit, to the inputs of the bidirectional port P3.0 - P3.3, P3.7 of which through the input an interface consisting of blocks including a transistor optocoupler, resistors, a capacitor, and an inverter; signals DR1, DR2 are received from the flow sensor; PC - permission to turn on the column from the remote control; RK, which determines the position of the dispensing tap, RU, which determines the manual or remote operation mode, and which generates: data for liquid crystal indicators on the outputs of the bidirectional port RO; on the terminals of the bidirectional port P2, the liquid crystal indicators control signals, the engine enable signal passing through the output interface, which consists of a transistor switch, triac optocouplers and a thyristor, and a 0.01 l passage signal for the remote control, passing through the output interface, which includes includes a transistor key and a transistor optocoupler; a photoelectric converter that converts infrared pulsed radiation generated by the remote price setting panel into electrical impulses coming through the inverter to the input P3.5 of the microprocessor, and consisting of a diode photodetector, a current stabilizer, an amplifier and a transistor switch; voltage failure detection circuit that generates a microprocessor reset signal when voltage appears, a voltage failure signal input to the microprocessor P3.4 input �

Description

96115503

Reading device.

The utility model relates to a gas station, and more specifically to a reading device for a fuel dispenser.

As a counterpart, you have 6-6, but the reading device Electronics - ECT is 1/5 (see AZT 2.045.000 passport), the elements of which are compiled into Function blocks: logical and indicators.

The logic block is designed to calculate the input pulse IMPULSE from the fuel consumption sensor and output information in the form of a seven-segment code to the indicator block. The logical unit includes a power supply that generates a constant voltage.

The block of indicators is intended for outputting the incoming in-formation to seven-segment indicators.

The modules are interconnected into a single product by electrical communication and mechanical fastening.

The considered reading device is intended for counting and displaying information about the flow rate of the measured value with an accuracy of 0.01 l and the repetition rate of the input signal up to 800 Hz. At a frequency of input pulses of more than 20 Hz, the display

Info1 Mad II occurs only in three digits, to the left of the decimal point.

This excellent device allows you to diagnose a block of indicators by displaying 8. on the indicators and their blanking.

The operation of the reading device is controlled by the remote control.

The disadvantage of this reading device is that the consumer does not have the ability to control the correspondence of the amount of fuel received to the price aa, this amount of fuel in accordance with the price aa liter. The use of a large number of elements in a logical unit reduces the reliability of the readout-O device.

Known electronic tronomechanical reading device Electronics - ect - 1/13 (see passport AZT 2.045.003), KOTOpoio nodes as well. sk.vanvanE in the functionally blocks: block, logical and two 5lok.a indicators ..

B. TSOK. And they are interconnected into a single product of an electric svyvyo and mekanicheskoy krassleniyu.

The logical unit is intended for counting input pulses from a sensor, and races: x.ode. with an accuracy of 0.0.1 l. and a pulse repetition rate (pulse) of up to 10 Hz and outputting information to the block indicators.

The logical1O block includes: logic board, ck, onst1 ui1) operating on a bay with K-564 series microschemes, a power supply unit and a block, and uravleiyeya.

The power supply unit, consisting of a Filter, a transformer, diode bridges, rectifiers, voltage stabilizers, is designed for the conversion of alternating voltage to direct.

The control unit is designed to set the price per liter of fuel in three digits. H in. the highest possible price is 9.99 rubles / liter. Installation in the discharge is carried out in binary code 1 through 3 engines of three engines) a. The control unit allows you to test the indicator block by displaying the numbers 8 on the indicators and dimming the indicators at a certain position of the engines.

The block of indicators is intended for outputting incoming information to seven-segment indicators and is a board of indicators, which consists of indicators and transistor switches & t, operating in the mode of current amplifiers.

Control signals are sent to the reading device from the remote control.

The disadvantage of this device is that. that setting the price aa liter of fuel in three ranks limits the demand for columns with this reading device; setting prices and testing the indicator unit is associated with certain inconveniences. The use of a large number of microcircuits in the logic block reduces the reliability of the device.

As a prototype, a microprocessor reading device - model 2211 (see application for utility model N 94021176/20/021019 dated 07.06.94), consisting of blocks: a logic board, an indicator block, a power supply and a control unit, was selected.

The blocks are interconnected into a single product by electrical connection and mechanical fastening.

The logic board is designed to count input pulses from a flow sensor with a resolution of 0.01 L; for receiving control signals from a remote control and a dispensing tap; displaying information on the issued quantity on indicators

fuel, the price per liter of fuel and the price for the issued amount of fuel - for the formation of engine control signals, a drop valve and a signal for the issuance of 0.01 l of fuel for the remote control.

The logic board is speed-based on the microprocessor B: P1816Ö35.

The indicator unit is designed to display information coming from the logic board on the electromechanical seven-segment indicators, and is two identical boards consisting of decoders, transistor switches, and indicators.

The power supply unit converts AC voltage to DC, - generates a signal that controls the voltage drop; converts engine control signals and drop valve.

The control unit consists of an electric lock, a switch and two buttons, and controls the setting of the price per liter of fuel, testing the indicator block and displaying the total fuel supply value on the indicators.

The disadvantage of this device is that the use of a morally obsolete microprocessor and its accompanying microcircuits does not satisfy modern requirements for noise immunity and power consumption. The complexity of the design of the electromechanical indicators and their control circuits reduces reliability and causes an increase in the dimensions of the device.

The purpose of this utility model is to increase reliability, reduce power consumption and reduce the overall dimensions of the reading device.

In addition, the functional capabilities of the reading device have been expanded, namely, it is possible to store information about the price and the last refueling for a long time when the power supply is disconnected and, depending on the connection circuit, remote or manual operation modes are possible.

Ук; а “These goals are achieved by the fact that a microprocessor is inserted in the control and display unit on the logic board to the inputs of the bidirectional port РЗ.О - РЭ.Э, Р3.7 of which, through an input interface consisting of blocks including a transistor optocoupler, Reaistors, a capacitor, and an inverter receive the signals: DR1CH DR2 - from the flow sensor, - PC - resolution - turning on the speaker from the remote control pulsat; RSh, which determines the position of the dispensing crane, is RU, which determines manual or remote operation, and which generates data for liquid crystal indicators (LS) at the inputs of two HanpaBJieHHOio ports RO, at bi-directional terminals: port P2 LCD control signals, engine start signal passing through the output inerFace, which consists of a transistor switch, an ohmistor optocoupler and a thyristor, and a signal for the issuance of 0.01 l for the remote control passing through the output interface, which includes a transistor spanner and transistor optocoupler; Photoelectric converter (PEC), which transforms in infrared pulses and radiation. Formed by the remote installation, and the price, into the electrical pulses coming through the inverter to the microprocessor input P3.5, and consisting of a photoelectric diode, current stabilizer, amplifier and transistor switch: voltage drop detection circuit that generates a microprocessor reset when voltage appears,, power failure signal

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to the input РЗ.4 of the microprocessor and converts the microprocessor to the microprocessor MODE, the shutdown signal of inverters that pass through the turn-on signals of the magnetic magnetic stripper MP, control boxes - SR, CWR, WR, and which includes a transistor sensor., three triggers Schmidt with the input logic 2I-NOT and transistor to, .yayuch; a power supply unit that converts alternating voltage to direct and consisting of a transformer, fuse, rectifiers, stabilizers and ionistors, providing long-term storage of information in the event of a power failure; synchronization circuit for two 16 ™ bit LCD indicators with an integrated control circuit, one of which is part of the logic board, which consists of Schmidt triggers, D - triggers and inverters; LED backlight indicators; the display unit consisting of a board with a ZhS indicator and a backlight for it is a remote price setting unit that generates infrared signals, the time parameters of which correspond to the pressed button, and consists of 1 1 microprocessor, stabilizer, voltage and a circuit for transmitting a signal to infrared radiation .

The essence of the utility model is illustrated by Figure 1, which presents a structural diagram of the device.

The reading device consists of a control and indication unit 1., an indication unit 2, a remote price setting unit. (MAP) 3.

In the control and display unit 1, which includes the logic board 4, VHOL.YAT: microprocessor 5, input interface 6, consisting of units including a transistor optocoupler, reeistors, capacitor, I inverter, - inverters 7; output interface 8, consisting of transistor switches, transistor and triac ops

, /// 5 topar, thyristor; a single liquid crystal indicator (ZHEI) 9 with an integrated control circuit; LCD synchronization circuit 10, consisting of Schmidt triggers, D - triggers and inverters; LED backlight indicators 11; Photovoltaic device (FEP) 12, consisting of a diode photodetector, a current stabilizer, an amplifier and a transistor switch; a circuit for detecting a voltage drop 13. which includes a transformer, a ch-ri trigger and midt with input logic 2I-NOT and a transistor switch; power supply unit 14, consisting of a transformer, fuse. rectifiers, stabilizers and ionistors.

Microprocessor 5 in accordance with the input signals: DR1, DR2 - from sensors, flow rate, PC - resolution to turn on the speaker from the remote control. RK, determining the position of the dispensing crane, RU, determining the manual or remote operation mode, arriving at the inputs of the bidirectional port, RZ. about -RZ, 3, RZ. 7 p1) the input ipterFace b input, which performs the functions of a mesoscale converter, and a shaft-valued program in it Generates data for Ж1Ш 9 on the terminals of the bi-directional port RO, on the terminals of the bi-directional port P2: signals CWR, WR, SR, which are transmitted through the controlled inverters 7 on Ж.1Ш 9: a signal, an inverter 7 and a transistor switch of the output interface 8 open the transistor optocouple, on which) the output signals of the other and other are generated, informing the remote control about the output of 0.01 l of fuel by the reading device; the signal through the inverter 7 opens the transistor key of Bykhodnog about the interface 8 and starts the simisgorny optocouplers, which through the thyristor kosh use the signal to turn on the MP engine. A photoelectric converter (PEC) 12 converts infrared pulsed radiation, which is formed by the remote control unit for setting the price 3 and which is fed to the photodetector diode, included in the circuit of the current stabilizer, made on the transistor covered by negative feedback, and through the amplifier to the base of the transistor operating in key mode and Generating a pulse signal, which through the double inverter is fed to the input of the RE. 5 of microprocessor 5, starting the processing routine for this signal. The voltage drop detection circuit 13 is designed to generate a mic reset signal, relay 13 when voltage appears, by means of Schmidt triggers and a transistor switch, a voltage drop signal controlled by a transistor sensor, Schmidt triggers 1 and fed to the control input of inverters 7, by resetting their outputs to state O, and through the element NOT to the input РЗ.4 of microprocessor 5, calling the subroutine for transferring microprosesk ora 5 to microprocessor mode.

Block. Indication 2 consists of a board 15 with a 16-bit ZHEI 16 with an integrated control circuit, an LED backlight circuit 17 for it and, in accordance with the signals received from the control unit and indication 1, displays information on the price of a liter of fuel on ZHEI 9 and 16 , about the amount of fuel issued and the price for the amount of fuel issued.

The remote control for setting the price 3 is assembled in a separate case and consists of a board 18, which includes a microprocessor 19, a voltage stabilizer 21, and a circuit for converting electric to infrared radiation 22, which consists of transistor clutch, resistors, capacitors, and emitting DIODES; Keyboard 19, VK, button Price, Comma and Return; and batteries 20.

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When a button is pressed, the microprocessor 19 is reset. It is initializing it. At the entrance to the port of RO. corresponding to this (luaiopke. a signal is received that selects the program for generating at the output Р2.o a pulse sequence with definite time characteristics, which, by controlling the transistor switches f-; xe, MH conversion 22, generates infra-red pulses on the emitting diodes sent to the diode photodetector 12. The passage of the signal is controlled by the backlight of a single individual; ator. Releasing the button puts the microprocessor 19 into microprocessor mode,

The design of the reading device allows for the counting of the unit’s ionistors and power supply 14 to store information on the ZHEI for at least 0.3 hours, and in RAM the microprocessor 5 for at least 24 hours.

The reference ycTjxjftcTFJO works as follows. When the supply voltage is applied, the reading device is initialized, namely, all ports and registers of the microprocessor 5 are reinstalled. I am in the initial state; the timer of the microprocessor 5 is set to the mode of automatic start-up counter to work out the signal of disappearance by, П}) I, the signal coming from circuit 13; timer I of microprocessor 5 is set to the mode of auto-resettable counter for processing signals from PDUC 3; the timer 2 of the microprocessor 5 is set to the auto-reset timer mode for counting time intervals; The PCA timer of Nyuroprocessor 5 is tuned to the timer mode. This ensures that microprocessor 5 is reset when the program fails.

Next, an analysis is made of the reasons that caused the reset of microprocessor 5: if this is the initial start-up, then the indicators 9 and 16 show the version number of the software and mi1s, the process) p 5 goes into standby mode for control sigma-VOCs; if it is a way out of consumption, then the state of the reading device, RAM of microprocessor 5 is analyzed and, depending on the results, microprocessor 5 goes into standby mode or into the operating mode of fuel delivery; if there was a malfunction of microprocessor 5, then the reliability of the information in the RAM of microprocessor 5 is analyzed and, with a satisfactory result of welding, the operation of the reading device will continue.

In standby mode, the microprocessor 5 analyzes the presence of signals arriving at the relay port: from PDUZ 3 through the solar power supply 12, about the position of the distributing crane of the Republic of Kazakhstan, about the manual or remote operation mode - the switchgear, permission to turn on the speaker from the remote control - PC, coming through input interface 6.

Transition of the reading device to the fuel delivery mode is impossible without setting the price per liter of fuel. To do this, it is necessary to bring the PDUZ 3 to the reading device by pointing the PDUZ 3 emitter to the photomultiplier window 12. Press the Comma button and set the desired position of the comma, and the device will go into the price setting mode: information will be reset to RAM of microprocessor 5 and to LCD 9 and 16 all information will go out except for the zero value of the price aa liter of fuel. By pressing and holding the Price button in this position, set the value of the price categories one by one. Pressing the Return button puts the reading device into standby mode and on ZHEI 9 and 16 a new price value, zero value of the issued amount of fuel and its price will be displayed.

The information is output to ZHEI 9 and 16 as follows, the microprocessor 5 generates a reset signal of the LCD SR coming from the output P2.5 of the microprocessor 5 through the inverter 7 to the LCD.

- 10 Then, a digit is read from the RAM of microprocessor 5, which is converted into a seven-segment code, which is output through the RO port on the LCD. microprocessor 5 Generates a write signal for the CWR byte, coming from the output Р2.b of microprocessor 5 through the inverter 7 to the LCD - In this way, data is recorded for all 16 bits. After that, the microprocessor 5 generates a signal for the rewriting of information WR coming from the output P2.7 of the microprocessor 5 through the inverter 7 to the ZHEI and causing the information to be updated on the LCD.

A distinctive feature of this reading device is that. that it provides manual and remote operation. The transition to the manual mode of operation is carried out by means of 1: gzom supply voltage 0 (126) to the input of the control unit and display unit 1.

In remote mode, the column is turned on by the metering device at a given price per liter of fuel, in the presence of a signal for removing the dispensing cock of the Republic of Kazakhstan, coming through input interface 6 to the input РЗ.1 of microprocessor 5, in the presence of a signal for enabling the column to be turned on from the PC remote control microprocessor 5. through the input interface 6 to the RZ.O input. If these signals are present, the LCD test 9 and 16 is performed: the information on the LCD is sequentially extinguished with an interval of one second. are set in all digits 8, the price for one liter and O in the remaining digits are displayed. Then, at the output P2.3 of the microprocessor 5, a signal О is formed, which, through the inverter 7, enters the output interface 8, where it is converted into an enable signal of the magnetic starter MP. It is allowed to receive signals ЛР1 and ДР2 from the fuel consumption sensor, coming through the input interface 6 to the external interrupt inputs РЗ.2 и РЗ.3 of the microprocessor 5. The analysis is periodically performed

these signals and when detecting the issuance of 0.01. l of fuel, the pulse counter is corrected, which is valuable for the amount of fuel delivered to the microprocessor 5 RAM and 9 and 16, the output of microprocessor P2.2 is generated. A signal is generated that passes through the inverter 7 to the output interface 8, where it is converted to and Ukh, informing the remote control about the consumption of 0.01 I fuel. With subsequent changes in the position signal of the distributing country of the Republic of Kazakhstan while maintaining the signal from the remote control panel of the PC, the magnetic start signal for the MP is formed without changing the readings on the LCD 9 and 16,

In pyMfioM mode, to turn on the column by the reading device, you only need the price per liter of fuel and the signal to remove the dispensing 1sran RV ,.

The signal to turn on the magnetic starter MP prek, grows at. the disappearance of any input signal: PC from the remote control ™ or RC when installing in the dispensing cock, or when reaching the value of the issued amount of fuel 999.00 l.

The design of the reading device provides protection against nporpatiMfcr failures, implemented due to the capabilities embedded in the microprocessor 5. The presence of the PCA timer and the possibility of selecting the waiting mode for the timer for it allows you to quickly detect a program and org8 failure, no microprocessor reset 5.

 8 devices1 provides protection against information loss when the power is turned off. The scheme for determining the voltage drop 13 allows the voltage drop to prevent the destruction of information in the LCD 9, 16 and in the RAM microprocessor 5. put the microprocessor 5 into microprocessor mode, and when a voltage appears, generate a reset signal of the microprocessor 5 in case of multiple power failure lasting not less than 3 ms.

An industrial design of this reading device has been created, which has passed acceptance tests. There is a program for the release of a reading device for 1996 - 100 pcs. For 1997 - 1000 pcs.

Sources of information;

1. The device is an electronic.tronic-mechanical reading Electronics ЭЦТ-1. / 5. Passport AZT 2.045.000 PS;

2. The device is an electronic-mechanical reading electronics ЭЦТ-1/13. Passport AZT 2.045.003 PS.

3. The device reading model 221.1.

Application for useful Haddel N 94021176/20/021019 from 06/07/94.

Claims (1)

A reading device containing a control and indication unit, an indication unit and a remote price setting unit, characterized in that a microprocessor is inserted into the logic and control unit in the logic board, to the inputs of the bidirectional port P3.0 - P3.3, P3.7 of which is through the input an interface consisting of blocks including a transistor optocoupler, resistors, a capacitor, and an inverter receive signals DR1, DR2 from the flow sensor; PC - permission to turn on the speaker from the remote control; RK, determining the position of the dispensing crane, RU, determining manual or remote operation, and which generates: on the terminals of the bi-directional port RO data for liquid crystal indicators; on the terminals of the bidirectional port P2, the control signals are liquid crystal indicators, the engine start signal passing through the output interface, which consists of a transistor switch, triac optocouplers and a thyristor, and a signal of passage of 0.01 l for the remote control passing through the output interface, which includes a transistor switch and a transistor optocoupler; a photoelectric converter that converts infrared pulsed radiation generated by the remote pricing unit into electrical pulses coming through an inverter to the microprocessor input P3.5, and consisting of a diode photodetector, current stabilizer, amplifier and transistor switch; a voltage drop detection circuit that generates a microprocessor reset signal when a voltage occurs, a voltage drop signal supplied to the microprocessor input P3.4 and puts the microprocessor into microprocessor mode, a shutdown signal for inverters that pass motor control signals, indicators, and which includes a transistor sensor, three Schmidt triggers with input logic 2I - NOT and a transistor switch, a power supply unit that converts alternating voltage to constant and consisting of transf ormatora, fuse, rectifiers, stabilizers and ionistors, providing long-term storage of information in the event of a power failure; synchronization circuit of two 16-bit liquid crystal indicators with an integrated control circuit, one of which is part of the logic board, which consists of Schmidt triggers, D-flip-flops and inverters; LED backlight indicators; an indication unit consisting of a board with a liquid crystal indicator and a backlight for it; a remote price setting unit that generates infrared pulses, the time parameters of which correspond to the pressed button, and consists of a microprocessor, a voltage stabilizer and a circuit for converting an electrical signal into infrared radiation.