CN201084215Y

CN201084215Y - A code-type prepayment instrument control device

Info

Publication number: CN201084215Y
Application number: CNU2007201507396U
Authority: CN
Inventors: 张建武
Original assignee: OUFU CODE TECHNOLOGY (DALIAN) Co Ltd
Current assignee: Oufu Numerical Control Technique (Dalian) Co., Ltd.
Priority date: 2007-09-10
Filing date: 2007-09-10
Publication date: 2008-07-09
Anticipated expiration: 2017-09-10

Abstract

The utility model discloses a coded pre-billing meter control device, consisting of a microprocessor MCU, a memory, a reset circuit, keys and an LCD. Thu utility model is also provided with a power supply circuit, a connected voltage sampling circuit input by a battery with voltage ranging from 3V to 6V, a diode connected in series, a power supply voltage-stabilizing chip and a plurality of porcelain slice capacitor; the rest circuit is the RC loop of the resistor and the capacitor and connected with the outside subscriber manual reset interface; the microprocessor MCU is connected with a 32.768K oscillation circuit outside, which forms an internal clock; the microprocessor MCU drives the LCD directly. The subscriber can prepay through the telephone voice, online payment and other ways. Meanwhile, the subscriber inputs the code provided by the charging department into the utility model to realize recharge, thus saving the writing-counting process in each home for the property management department.

Description

Code type pre-payment instrument control device

Technical field:

The utility model relates to a kind of prepaid devices that utilizes electronic technology, especially a kind of code type pre-payment instrument control device.

Background technology:

At present, the charge method for fields such as electric power, tap water, combustion gas, CATV (cable television), heat supplies mainly contains manual charge and IC-card pre-payment dual mode.Wherein manual charge method must be registered one's residence by the professional and be checked meter, and is gone to pay the fees to bank or other appointment departments of paying dues voluntarily by the user, and time and effort consuming brings unnecessary trouble to the user.And, when phenomenon of defaulting takes place, brought many troubles for corresponding administrative authority.So this kind charge method is eliminated gradually.Along with development of electronic technology, the IC-card technology is applied to more and more such as among the above field.But find through years: the data security confidentiality of existing IC-card prepaid devices is relatively poor, and is decrypted easily; Simultaneously, pollute the abnormal problem of controller work that causes owing to solving the bayonet socket of IC-card controller in abominable occasion, can't be above all many-sided application; In addition, the IC-card device does not still solve the user and must go in person to pay dues and write the problem of card.

Summary of the invention:

The utility model is at the above-mentioned deficiency of prior art, provide a kind of more reliably, precise counting circuit---code type pre-payment instrument control device more.

Technical solution of the present utility model is: a kind of code type pre-payment instrument control device, comprise microprocessor MCU, storer, reset circuit, button and LCD constitute, and wherein are connected between microprocessor MCU and the storer, realize two-way communication, the reset terminal of reset circuit and microprocessor MCU joins, also be provided with power circuit, connect voltage sampling circuit, the diode of connecting again by the input of 3-6V battery, through power supply voltage stabilizing chip, a plurality of ceramic disc capacitors in parallel; There is voltage sampling circuit can effectively avoid importing power supply and connects instead, reverse charge etc., when voltage sampling circuit detection supply voltage was low, system prompt warning simultaneity factor was closed valve.Reset circuit constitutes the RC loop by resistance and electric capacity, can allow chip after system's power supply is stable, and master chip just normally moves; And be connected to external user hand-reset interface.Microprocessor MCU outside connects the 32.768K oscillatory circuit, constitutes internal clocking.Microprocessor MCU can select the PIC16F946 model for use.

The utility model adopts technology leading in the world, acp chip PIC16F946, and online down loading updating program, upgrading is convenient, and confidentiality is stronger simultaneously, can't directly read internal data.Product leaves a plurality of expansion interfaces, the RS485 remote transport interface, and wireless data communication interface etc., convenient and upper machine communication, data statistics management total system place and the operation of Low-voltage Low-power state, operating voltage 2.2V, all working current is 10 microamperes.System adopts the timing wake-up technology, and the most of the time is in sleep state.Have only the trigger condition of working as to possess, system enters normal operating conditions immediately.System can save energy to greatest extent like this.The wake-up condition has two kinds.1,1 second chronomere of internal clocking wakes up; 2, the signal system that puts in place of detected gas flow is provided with the real-time clock function, adopts the vibration of external low frequency crystal and chip internal to constitute.System permits the user continuous 8 input error chances, can lock voluntarily, can prevent malice exploration password.The unique solution lock cipher is arranged.Complete burglar-proof measure.Backup battery is arranged.Outage, system decides immediately.Inner EEPROM prevents to revise data, and abnormal signal puts in place.Input error, system works abnormal information record, recovery such as statistics warning etc. the parameter function that dispatches from the factory.

The user can be by multiple form pre-payments of paying dues such as call voice or online payments, and the code that toll administration department provides is input in the utility model, realizes supplementing with money, thereby has saved check meter from house to house and charge loaded down with trivial details for administration departments.

Description of drawings:

Fig. 1 is the connection line figure of the utility model microprocessor.

Fig. 2 is the connection line figure of the utility model button.

Fig. 3 is the connection line figure of the utility model power circuit.

Fig. 4 is the connection line figure of the utility model reset circuit.

Fig. 5 is the connection line figure of the utility model clock circuit.

Embodiment:

Below in conjunction with the description of drawings specific embodiment of the utility model.

Shown in Fig. 1～5, a kind of code type pre-payment instrument control device comprises microprocessor MCU, and storer, reset circuit, button and LCD constitute, wherein be connected between microprocessor MCU and the storer, realize two-way communication, the reset terminal of reset circuit and microprocessor MCU joins, and also is provided with power circuit, connect voltage sampling circuit by the input of 3-6V battery, the diode of connecting again is through power supply voltage stabilizing chip, a plurality of ceramic disc capacitors in parallel; There is voltage sampling circuit can effectively avoid importing power supply and connects instead, reverse charge etc., when voltage sampling circuit detection supply voltage was low, system prompt warning simultaneity factor was closed valve.Reset circuit constitutes the RC loop by resistance and electric capacity, can allow chip after system's power supply is stable, and master chip just normally moves; And be connected to external user hand-reset interface.Microprocessor MCU outside connects the 32.768K oscillatory circuit, constitutes internal clocking.

Microprocessor MCU selects the PIC16F946 model for use.F946:64 pin bit flash memory CMOS microcontroller MCU, have moving device of LCD and nanaWatt technology, high performance RISC CPU only has 35 instructions, clock DC-20MHz, instruction cycle DC-200ns, programmable memory reads (PMR) function and interrupt function, 8 grades of degree of depth hardware stacks, directly, indirectly and the relative address pattern, special microcontroller (MCU) characteristic comprises accurate internal oscillator, factory adjusts precision+/-1%, software can select frequency range from 8MHz to 32kHz, software can be adjusted, economize the sleep pattern of power consumption, operating voltage 2.0V-5.5V, industry and extended temperature scope, power up function of reset (POR), flash memory writes 100,000 times, EEPROM writes 1,000,000 times, flash memory/data EEPROM storage life is greater than 40 years, 2.0V the time standby current less than 100nA, the working current 8.5uA of 32kHz, the working current 100uA of 1MHz, the LCD display module can drive 168 pixels, can select Zhong Yuan, analog comparator and 10 8 road ADC are arranged, three timers and two synchronous serial ports (SSP) that seizure is compared the PWM module and is with I2C, can be used on automotive electronics, instrument is starved and is measured household electrical appliance, industrial system and consumer electronics product and communication facilities.

Main control singlechip directly drives LCD, and single-chip microcomputer PIC16F946 is corresponding as follows with the liquid crystal line on the hardware:

Liquid crystal PIN1-single-chip microcomputer RB4/COM0; Liquid crystal PIN2-single-chip microcomputer RB5/COM1; Liquid crystal PIN3-single-chip microcomputer RA2/COM2; Liquid crystal PIN4-single-chip microcomputer RD0/COM3; Liquid crystal PIN5-single-chip microcomputer RE4/SEG24 liquid crystal PIN6-single-chip microcomputer RE5/SEG25; Liquid crystal PIN7-single-chip microcomputer RE6/SEG26; Liquid crystal PIN8-single-chip microcomputer RE7/SEG27; Liquid crystal PIN9-single-chip microcomputer RF4/SEG28; Liquid crystal PIN10-single-chip microcomputer RF5/SEG29 liquid crystal PIN11-single-chip microcomputer RF6/SEG30; Liquid crystal PIN12-single-chip microcomputer RF7/SEG31; Liquid crystal PIN13-single-chip microcomputer RF0/SEG32; Liquid crystal PIN14-single-chip microcomputer RF1/SEG33; Liquid crystal PIN15-single-chip microcomputer RF2/SEG34; Liquid crystal PIN16-single-chip microcomputer RF3/SEG35; Liquid crystal PIN17-single-chip microcomputer RG0/SEG36 liquid crystal PIN18-single-chip microcomputer RG1/SEG37; Liquid crystal PIN19-single-chip microcomputer RG2/SEG38; Liquid crystal PIN20-single-chip microcomputer RG3/SEG39; Liquid crystal PIN21-single-chip microcomputer RG4/SEG40; Liquid crystal PIN22-single-chip microcomputer RG5/SEG41.Use LCD register LCDDATA12-LCDDATA23 on the software.

Claims

1. code type pre-payment instrument control device, comprise microprocessor MCU, storer, reset circuit, button and LCD constitute, and wherein are connected between microprocessor MCU and the storer, realize two-way communication, the reset terminal of reset circuit and microprocessor MCU joins, it is characterized in that: also be provided with power circuit, connect voltage sampling circuit, the diode of connecting again by the input of 3-6V battery, through power supply voltage stabilizing chip, a plurality of ceramic disc capacitors in parallel; Reset circuit constitutes the RC loop by resistance and electric capacity, and is connected to external user hand-reset interface; Microprocessor MCU outside connects the 32.768K oscillatory circuit, constitutes internal clocking; Microprocessor MCU directly drives LCD.

2. code type pre-payment instrument control device according to claim 1 is characterized in that: described microprocessor MCU is the PIC16F946 model.