CN2604742Y - Tax control cash register - Google Patents

Abstract

The utility model discloses a tax control cash register with a circuit control panel arranged within. The circuit control panel is connected to a LCD display screen; a keyboard is positioned at the device surface through signal wires; and the printer core is arranged in the device and the RS232 communication port on the device body. The circuit control panel has a real-time clock circuit which is characterized in that: the circuit control panel applies a PSD circuit and a CPLD circuit in the hardware circuit kernel design and a structure with two IC card sockets; a tax control setting card socket and a user card socket is used for IC card design; a GB18030 literal pool is stored in the data memory in addition to a GB2313 literal pool; and the circuit has a power supply circuit with power-off protection function and a external USB communication port. The utility model has advantages of conformity with new national standard on tax control cash register, high performance and integrated level in circuit design and the enhanced safety for data storage.

Description

Tax-control cash register

Technical field

The utility model relates to a kind of tax-control cash register, belongs to electronic message unit.

Background technology

Tax-control cash register on the market is some Evaluation products basically at present, can satisfy general gathering and tax control function.But, along with the development of China's electronics tax revenue cause and the appearance of national tax-control cash register new standard, up to the present the defective of existing tax-control cash register and deficiency are more and more obvious, mainly show: at first do not meet country new tax-control cash register standard " State Standard of the People's Republic of China GB18240.1-2003 tax-control cash register part 1: machine standard " and " State Standard of the People's Republic of China GB18240.2-2003 tax-control cash register part 2: application-specific integrated circuit calliper model "; Concrete manifestation following some: at first existing tax-control cash register all adopts the single deck tape-recorder holder structure; can not satisfy the operation that simultaneously tax control is provided with card and subscriber card in the new standard; the printing character library of the second existing tax-control cash register only has the GB2313 character set; the regulation printable character must satisfy the requirement of GB18030 character set in the new standard; the 3rd; clear and definite regulation " tax-control cash register is under the situation of sudden power; should guarantee tax-controlling memory; data is correct in invoice memory and the tax-controlling card; complete " among the GB18240.1-2003, existing tax-control cash register are difficult to satisfy this requirement because of no power-off protection function or power-off protection function are imperfect.

Summary of the invention

The purpose of this utility model is custom-designed at above-mentioned deficiency and defective, it meets country new tax-control cash register standard " State Standard of the People's Republic of China GB18240.1-2003 tax-control cash register part 1: machine standard " and " State Standard of the People's Republic of China GB18240.2-2003 tax-control cash register part 2: application-specific integrated circuit calliper model ", be in particular in: adopt the double cassettes structure, tax control is provided with card and uses different decks respectively with subscriber card; Expanded character library in the machine, made printable character meet the requirement of GB18030, compatible GB2313 character set simultaneously; Adopt brand-new power-off protection pattern and on function, satisfy the requirement of new standard fully; increased USB interface originally; in the function design, advocate the theory that people-oriented, can be widely used in various gathering occasions, be the electronics tax revenue cause service of country.

The purpose of this utility model is achieved in that a kind of tax-control cash register; it comprises shell and body; at internal body circuit control panel is housed; circuit control panel by signal wire respectively with the LCD display that is contained in body surface; keyboard joins; join with the printer core that is loaded on internal body; join with the RS232 communication interface that is loaded on the body again; the circuit control panel design has real time clock circuit; it is characterized in that: circuit control panel is provided with PSD circuit and CPLD circuit on the hardware circuit core; in the IC-card design, adopt two IC-card holder structures; be that tax control is provided with deck and user's deck; the character library that is stored in the data-carrier store also has the GB18030 character library except the GB2313 character library is arranged, this external circuit has power circuit and the circumscribed USB communication interface with power-off protection function.

The utlity model has following advantage: meet the new national standard of tax-control cash register " State Standard of the People's Republic of China GB18240.1-2003 tax-control cash register part 1: machine standard " and " State Standard of the People's Republic of China GB18240.2-2003 tax-control cash register part 2: application-specific integrated circuit calliper model ", while circuit design high-performance, high integration, improved security of storage data, design has USB interface etc.

Description of drawings

Fig. 1 is the utility model circuit block diagram;

Fig. 2 is the utility model circuit theory diagrams.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As Fig. 1; shown in Figure 2; a kind of tax-control cash register; it comprises shell and body; at internal body circuit control panel 1 is housed; circuit control panel 1 by signal wire respectively with the LCD display 2 that is contained in body surface; keyboard 3 joins; join with the printer core 4 that is loaded on internal body; join with the RS232 communication interface 5 that is loaded on the body again; circuit control panel 1 is provided with real time clock circuit 13; it is characterized in that: circuit control panel 1 is provided with PSD circuit 10 and CPLD circuit 11 on the hardware circuit core; in the IC-card design, adopt two IC-card holder structures; be that tax control is provided with deck 8 and user's deck 9; the character library that is stored in the data-carrier store 6 also has GB18030 character library 15 except GB2313 character library 14 is arranged, this external circuit has power circuit 12 and the circumscribed USB communication interface 7 with power-off protection function.Each several part function in the circuit mainly is: it is core that PSD circuit 10 adopts the PSD3254 integrated circuit, finishes program run and data processing by this integrated circuit, and USB handles, Power Supply Monitoring, functions such as program encryption; CPLD circuit 11 adopts the extensive CPLD of XC9500, finishes logic control functions such as address volume/decoding, driving, level/conversion of signals; Real-time clock 13 adopts RTCA8025 real-time clock generator, finishes the internal clocking function; Data-carrier store circuit 6 adopts FLASH, EEPROM, and storeies such as EPROM carry out different processing and storage to data of different types.Be built-in with GB18030 character library 15 and GB2313 character library 14, be respectively applied for and print and the LCD demonstration; Power circuit 12 adopts the light lotus root to detect, and the energy supply control module of CMOS control guarantees safety of data when outage; Printer core 4 adopts Japanese import MP512 microprinting movement, realizes printing function; Double cassettes is that tax control is provided with deck 8 and user's deck 9, respectively tax-controlling card and subscriber card are read and write; Concrete principle of work of the present utility model is described below: PSD3254AV inside comprises one 8032 microcontroller, two Flash storeies, SRAM, universaling I/O port, FPGA (Field Programmable Gate Array), management and monitoring module etc., it realizes logical operation with CPLD, data processing, USB interface, functions such as outside FLASH and IC-card read-write.External information is passed through keyboard, the data that external equipment etc. will be sold and collect money are read in, and by microprocessor processes in the sheet, will need data presented to show by LCD, and printed invoice or bill, the data that will need simultaneously to preserve are kept in the storer of machine intimate.When declaring dutiable goods, the data of needs being declared dutiable goods by IC-card print reports and submits the tax authority.Tax-control cash register has just been realized the function of gathering and tax control like this.Circuit is aspect hardware system, application program is moved in the microprocessor of U1 inside, produce address decoding and steering logic output by U20, address wire is A0-A20, data line is AD0-AD7, microprocessor reads and is stored in the data in the various storeies by address/data lines, U11 produces inner real-time clock by I2C agreement control clock chip, the USART aspect expands to two-way output by electronic switch U12, wherein one the tunnel meet printer core 4 communication port J12, another road is external RS232 communication port J11, and U1 also produces one tunnel independently external RS232 communication port J12 simultaneously, thereby makes this tax-control cash register have two-way RS232 communication port, USB interface J10 is controlled by U1, J8 connects two independently decks simultaneously, realizes that the tax is provided with separating of card and subscriber card, and J9 is the interface of external cash box, the external LCD of J6 and J7 shows, program among the U1 can on-the-spotly be upgraded, and promptly satisfies the IAP function, and it is finished by the JTAG agreement by J3.Power-off protection function shows if tax-control cash register carries out write operation to IC-card when cutting off the power supply; because reducing fast and produce, voltage meeting this moment disturbs; cause the data structure in the IC-card to make a mistake easily, thereby cause loss of data or mistake in the tax-control cash register.The solution of this money tax-control cash register is, at first power supply is detected in real time by light lotus root U21, judge by the monitoring module of U1 inside whether the outside outage occurs, secondly, if outage has taken place, the microprocessor device of U1 inside switches to power supply on the standby power supply by cmos switch pipe TR5, guarantees that data are unaffected in the IC-card.

Claims (1)

1; a kind of tax-control cash register; it comprises shell and body; at internal body circuit control panel (1) is housed; circuit control panel (1) by signal wire respectively with the LCD display that is contained in body surface (2); keyboard (3) joins; join with the printer core that is loaded on internal body (4); join with the RS232 communication interface (5) that is loaded on the body again; circuit control panel (1) is provided with real time clock circuit (13); it is characterized in that: circuit control panel (1) is provided with PSD circuit (10) and CPLD circuit (11) on the hardware circuit core; in the IC-card design, adopt two IC-card holder structures; be that tax control is provided with deck (8) and user's deck (9); the character library that is stored in the data-carrier store (6) also has GB18030 character library (15) except GB2313 character library (14) is arranged, circuit has power circuit (12) and the circumscribed USB communication interface (7) with power-off protection function.

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