CN2771173Y

CN2771173Y - Taxation-controlled fuel filling machine intelligent control device

Info

Publication number: CN2771173Y
Application number: CN 200520081503
Authority: CN
Inventors: 张瑞华; 袁东风; 江铭炎
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2005-02-17
Filing date: 2005-02-17
Publication date: 2006-04-12
Anticipated expiration: 2015-02-17

Abstract

The utility model provides a taxation-controlled fuel filling machine intelligent control device which comprises a metering microprocessor, a monitoring microprocessor, and peripheral circuits of the metering microprocessor and the monitoring microprocessor which comprise a keyboard drive circuit, a keyboard display drive circuit, a shaping circuit of metering pulses, an electric lock testing circuit, a gun lifting testing circuit, a data memory, a loudspeaker control circuit, an RS-232 interface circuit, a main display drive circuit, a communication interface, an on-off control circuit of a start-stop electromagnetic valve of a motor, and an ineffective testing circuit of a measuring converter. The circuits are evenly realized by large-scale programmable logic arrays. The utility model realizes decoding control, detection, and storage and makes the stability and the antistatic interfere capability of the whole circuit increased by using the programmable logic arrays, and the antistatic capability surpasses Chinese Standard requirements by detecting. The utility model has the advantages of simple hardware, short design development periods, low cost, the reduced probability of systematic failure, and increased metering precision.

Description

The tax control fuel oil adding machine intelligence controlling device

(1) technical field:

The utility model relates to the control setup of tax control fuel oil adding machine, belongs to the fuel charger technical field.

(2) background technology:

The electronic control package major part of domestic existing tax control fuel charger is to be made of outer volume read-out testing circuit, motor starting or stopping control circuit, keyboard treatment circuit (as MM74C922), display circuit (as the NJU6433LCD actuator), data storage circuitry, calendar clock circuit (as MC68HC68T1, DS1302, DS12C887 etc.), serial communication circuit etc. micro controller system (89C2051,80C32,87C52 etc.).The core circuit control of the electronic control package of tax control fuel charger the open and close of keyboard, demonstration, storage, step-by-step counting, motor, loudspeaker, electromagnetic valve, the communication between metering microprocessor and the monitoring microprocessor etc.At first by keyboard input quantitative refueling data, metering microprocessor shows data by straight-through the demonstration main during oiling, starter motor then, the oiling of motor-driven oil pump.Flux meter rotation by sensor, produces counting pulse signal (each impulse singla is represented certain volume petrol).Monitoring microprocessor detects when measuring the converting means normal operation, counting pulse signal is input to metering microprocessor through after the shaping, after the conversion of programming definite value, relevant data stores into respectively in meter store device and the tax-controlling memory, shows oil-filling data simultaneously.In the realization of these functions, a large amount of address decodings need be carried out and data latch.In this series products of market circulation, generally adopt many small-scale integrated circuit, 74HC374 for example, 74HC373,74HC138,74HC244 waits these work of finishing, owing to need latched data too many, cause the chip of 74 a large amount of series to occupy a large amount of areas of circuit version, and so numerous components and parts have brought a large amount of difficulties also for circuit card when welding, more be easy to generate rosin joint, be unfavorable for the maintenance of product, bring a lot of problems for the stability of circuit card, delayed the time that product comes into the market, unfavorable to the existence of enterprise.Many, the complex circuit designs of chip, safe reliability and confidentiality are relatively poor, and oil leakage tax phenomenon easily takes place to steal.

(3) summary of the invention:

At the deficiencies in the prior art, the utility model provides a kind of strong interference immunity, safe and reliable tax control fuel oil adding machine intelligence controlling device.

The technical scheme that the utility model adopted is:

The tax control fuel oil adding machine intelligence controlling device comprises metering microprocessor and peripheral circuit and monitoring microprocessor and peripheral circuit thereof, and the peripheral circuit of metering microprocessor comprises: meter store device, keyboard drive circuit, keyboard display driver circuit, metrical pulse shaping circuit, electric lock testing circuit, carry rifle testing circuit, data memory, horn control circuit; The peripheral circuit of monitoring microprocessor comprises tax-controlling memory, real-time clock, RS-232 interface circuit and the main driving circuit that shows, and is connected with communication interface, motor start and stop electromagnetic valve switch control circuit and measurement translator failure detection circuit between metering microprocessor and the monitoring microprocessor; The peripheral circuit of metering microprocessor passes through the address decoder addressing when addressing; Keyboard drive circuit, keyboard display driver circuit, metrical pulse shaping circuit, electric lock testing circuit, carry rifle testing circuit, data memory, horn control circuit, RS-232 interface circuit, main driving circuit, communication interface, motor start and stop electromagnetic valve switch control circuit and the measurement translator failure detection circuit of showing all realized by large-scale programmable logic array.

Each circuit all adopts the circuit of existing tax control fuel oil adding machine.

The utility model adopts programmable logic array to realize encoded control, detection and storage, and entire circuit stability and antistatic interference performance are improved, and antistatic effect reaches 4000V after testing, surpasses the GB requirement.Hardware is simple, and the cycle of designing and developing is short, and low cost of manufacture has reduced the probability of occurrence of the system failure, has improved measuring accuracy.

(4) description of drawings:

Accompanying drawing is a circuit structure block diagram of the present utility model.

Among the figure: 1. meter store device, 2. keyboard drive circuit, 3. keyboard display driver circuit, 4. count pulse shaping circuit, 5. the electric lock testing circuit is 6. carried the rifle testing circuit, 7. data memory, 8. horn control circuit, 9. tax-controlling memory, 10. real time clock circuit, 11.RS-232 interface circuit, the 12. main driving circuits that show, 13. the communication interface circuit, 14. motors electricity valve controling circuit, 15. measurement translator failure detection circuits, 16. metering microprocessor, 17. monitoring microprocessors

(5) specific embodiment:

Embodiment:

Accompanying drawing has provided circuit structure block diagram of the present utility model, its core mainly comprises metering microprocessor 16 and peripheral circuit and monitoring microprocessor 17 and peripheral circuit thereof, and the peripheral circuit of metering microprocessor 16 comprises: meter store device 1, keyboard drive circuit 2, keyboard display driver circuit 3, metrical pulse shaping circuit 4, electric lock testing circuit 5, carry rifle testing circuit 6, data memory 7, horn control circuit 8; The peripheral circuit of monitoring microprocessor comprises tax-controlling memory 9, real-time clock 10, RS-232 interface circuit 11 and the main driving circuit 12 that shows, and is connected with communication interface 13, motor start and stop electromagnetic valve switch control circuit 14 and measurement translator failure detection circuit 15 between metering microprocessor 16 and the monitoring microprocessor 17; The peripheral circuit of metering microprocessor passes through the address decoder addressing when addressing.Above-mentioned each circuit all adopts the circuit of existing tax control fuel oil adding machine.

Keyboard drive circuit 2, keyboard display driver circuit 3, metrical pulse shaping circuit 4, electric lock testing circuit 5, carry rifle testing circuit 6, data memory 7, horn control circuit 8, RS-232 interface circuit 11, main driving circuit 12, communication interface 13, motor start and stop electromagnetic valve switch control circuit 14 and the measurement translator failure detection circuit 15 of showing all realized by large-scale programmable logic array CPLD.

CPLD has the cycle of designing and developing weak point, and design and manufacture cost is low, the developing instrument advanced person, and standardized product need not test, but advantages such as steady quality and real time on-line monitoring.Product type is selected the MAXII series EPM2210 of ALTERA company.By utilizing software MAX+PLUSII, can finish circuit layout by fast speed, carry out simulating, verifying simultaneously.Its design cycle is:

(1) design input.Utilize MAX+PLUSII software, adopt modes such as schematic diagram, text input or HDL language description will design input, produce design document.

(2) functional simulation.Whether it is the zero propagation mode that mode of operation is set, mainly be in order to check input wrong.

(3) compiling.Utilize the Compiler among the MAX+PLUSII to read information from design document, selection and the examination of finishing device joined, the extraction of the packing into of logic synthesis and device, delayed data, produces programming file and simulation document.

(4) post-simulation.The delayed data that compiling is produced joins in the design, carries out the post-simulation that layout is not limit, and is the essentially identical emulation of situation when working with practical devices.

(5) program verification.Use the Programmer among the MAX+PLUSII that the CPLD device is programmed, the configuration file of confirming with post-simulation adds actual excitation through programming cable configurations CPLD, tests, and whether finishes predetermined function to check.

Gage probe is connected with count pulse shaping circuit 8, and from gage probe output two pulse signals, pulse number and gas filed oil mass are proportional, and the dutycycle of two pulse signals is approximately 50%.

For the tested value 5L of minimum, accuracy of the present utility model is ± 0.2% after testing, and repeatability is 0.10%; For the tested value 50L of maximum, accuracy of the present utility model is ± 0.1%, and repeatability is 0.06%; Surpass the GB requirement.

Claims

1. tax control fuel oil adding machine intelligence controlling device, comprise metering microprocessor and peripheral circuit thereof and monitoring microprocessor and peripheral circuit thereof, the peripheral circuit of metering microprocessor comprises: meter store device, keyboard drive circuit, keyboard display driver circuit, metrical pulse shaping circuit, electric lock testing circuit, carry rifle testing circuit, data memory, horn control circuit; The peripheral circuit of monitoring microprocessor comprises tax-controlling memory, real-time clock, RS-232 interface circuit and the main driving circuit that shows, and is connected with communication interface, motor start and stop electromagnetic valve switch control circuit and measurement translator failure detection circuit between metering microprocessor and the monitoring microprocessor; The peripheral circuit of metering microprocessor passes through the address decoder addressing when addressing; It is characterized in that: keyboard drive circuit, keyboard display driver circuit, metrical pulse shaping circuit, electric lock testing circuit, carry rifle testing circuit, data memory, horn control circuit, RS-232 interface circuit, main driving circuit, communication interface, motor start and stop electromagnetic valve switch control circuit and the measurement translator failure detection circuit of showing all realized by large-scale programmable logic array.