CN2514568Y - Wireless desk-type charge telephone - Google Patents

Abstract

The utility model discloses a wireless table telephone, which comprises a singlechip, a GSM communication module, a serial data memory for memorizing charges and bills, a number input keyboard, a display and a peripheral power circuit. The full-duplex serial port of the GSM communication module is connected with the full-duplex serial port of the singlechip, the I <2> C bus interface of the serial data memory is connected with the corresponding interface of the singlechip, the number input keyboard is scanned by the extended parallel port of the singlechip, and the display is controlled by the I/O port of the singlechip. The utility model controls the GSM communication module via the singlechip to realize wireless dial and receive and to control the instant recording and displaying of the telephone charges, which can be used as public telephones at the public places such as ships, trains and the like and also can be applicable for household and offices.

Description

Wireless desktop type Charging telephone

The utility model relates to a kind of wireless desktop type Charging telephone.

But prior mobile phone or family expenses desktop type phone all do not have the function of instant playback, ticketed call expense, the cost of the phone call that the telephone subscriber needs detail knowledge to spend, have only by Help by Phone or to telecommunication bureau's print record inventory, this has brought many inconvenience to the user; But although more existing public telephone instant recording costs of the phone call, but the taximeter of these public telephones needs configuration separately, more complicated, not attractive in appearance yet, inapplicable family uses, and in the public place as steamer, train etc., fixing telephone wire can not insert, and this charging phone has also just lost effect.

But the purpose of this utility model is to provide the wireless desktop type telephone set of a kind of instant playback, ticketed call expense.

For achieving the above object, the utility model comprises single-chip microcomputer, the GSM communication module, digital input keyboard, display and peripheral power supply circuit, the full duplex serial port of GSM communication module links to each other with full duplex serial port on the single-chip microcomputer, digital input keyboard is by the expansion parallel port scanning of single-chip microcomputer, display is by the I/O mouth control of single-chip microcomputer, the output of peripheral power supply circuit links to each other with the power supply input pin of each part mentioned above, it is characterized in that: also comprise the serial data memory that is used to store charging and ticket, the I of this serial data memory ²The C bus interface links to each other with corresponding interface on the single-chip microcomputer; Finish the preservation and the inquiry of charging, telephone expenses and the ticket of various communication tasks, phone by Single-chip Controlling gsm communication module, and show corresponding information by display.

The utility model is realized wireless dial-up and reception by Single-chip Controlling gsm communication module, and the instant recording and the demonstration of control telephone expenses, is applicable to steamer, is used as public telephone in the public place of train etc., for the user brings convenience and material benefit; Also can be used as simultaneously family expenses or office usefulness, the user can know the convenient own spent cost of understanding immediately.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is a functional-block diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

As shown in Figure 1 and Figure 2, the utility model comprises single-chip microcomputer, GSM communication module, digital input keyboard, display, serial data memory and peripheral power supply circuit.The output of peripheral power supply circuit links to each other with the power supply input pin of each part mentioned above, and power supply can be used the electric main of 220V, also available dc-battery.Single-chip microcomputer adopts 805 1 series, it is the control centre of entire circuit, can can select the chip of different model according to the needs of program capacity for use, maximum program capacity can reach 64Kbyte, and the model of present embodiment chip D1 is ATF89C55, also can adopt other compatible chips, chip D1 also is connected to external RAM simultaneously, the outer RAM of this sheet is that the latch D2 of 74HC573 and model are that 62256 data storage D4 forms by model, and the ram space of 32Kbyte can be provided, and is used for the program running of single-chip microcomputer.The gsm communication module is a packaged circuit module, model is GSMWMOI3, connector by one 50 pins connects, the full duplex serial port of this GSM communication module links to each other with full duplex serial port on the single-chip microcomputer, realize intercommunication mutually, single-chip microcomputer is by sending various AT orders, and may command GSM communication module cooperates between user's SIM card and the mobile radio communication finishes the various functions that mobile communication system provided such as speech transmissions, data communication, automatic roaming, news in brief transmitting-receiving.Each button of digital input keyboard is by the expansion parallel port scanning of single-chip microcomputer, this expansion parallel port is that a slice model is 74HC273, has a latch D3 of eight parallel-by-bit mouths, six line outputs wherein as key scan, one is the buzzer delivery outlet, one is the bias light control mouth of display lcd, the output pin Q1 of latch D3～Q6 output scanning signal, isolate through diode V1～V6, output to keypad through interface XS2 again, read by the input pin P12～P15 in the P1 mouth of single-chip microcomputer by key input signal.The I of serial data memory ²The C bus interface links to each other with corresponding interface on the single-chip microcomputer, and the model of serial data memory is the chip D6 of CAT24C161, is used for storage and charges and ticket; Display by receiving the conversation progress information that the gsm communication module is returned, by Single-chip Controlling starting or termination charging process, and shows relevant information, simultaneously serial data memory recording call list data by the I/O mouth control of single-chip microcomputer on display.

The concrete course of work of the utility model is as follows: after the phone energising, the gsm communication module detects communication network status, and the Single-chip Controlling display lcd shows " detection network "; Behind gsm communication module success access communications network, can issue the single-chip microcomputer corresponding information, single-chip microcomputer receives that back control display lcd shows " China Mobile " or " CHINAUNICOM ", shows the Internet service provider that current gsm communication module is inserted.

When the user dials a telephone number, at first pick up handle, single-chip microcomputer can detect off-hook, sends AT order notice gsm communication module then and sends " dialing tone ", at this moment can hear dialing tone from the receiver of handle.Display lcd shows " please dial ABCDEFGHIJK " simultaneously, and wherein " ABCDEFGHIJK " is loCal number.When the subscriber dialing sign indicating number, single-chip microcomputer can notify the gsm communication module to stop the Sending dialled number sound, detect simultaneously by number and show at display lcd; If number is dialed the wrong number, can also be by " cancellation " key, the number cancellation of dialling just now.When number input finishes, by " transmissions " key, single-chip microcomputer can send the AT order notify the gsm communication module just now by number send.

This moment, the gsm communication module sent number, and the result is returned to single-chip microcomputer.If circuit is connected, the gsm communication module returns to one of MCU and connects message, and after this communication process begins, and single-chip microcomputer picks up counting, and charges simultaneously, and these information are presented on the display lcd screen.When end of conversation, the gsm communication module can be issued an end, and single-chip microcomputer then stops to charge, and the time and the amount of money that display lcd shows are fixed.Form a call bill data simultaneously and be recorded in the serial data memory, call bill data can be inquired about, and so far a communication process finishes.If service interruption, gsm communication module return messages notice, single-chip microcomputer shows on display lcd that then corresponding information prompting user dials later on again.Can realize instant recording like this and show telephone expenses, give steamer, need to use the public telephone passenger to bring convenience in the public place of train etc. and material benefit; Also can be used as simultaneously family expenses or office usefulness, the user also can know the convenient own spent cost of understanding immediately.

Claims (2)

1, a kind of wireless desktop type Charging telephone, comprise single-chip microcomputer, GSM communication module, digital input keyboard, display and peripheral power supply circuit, the full duplex serial port of GSM communication module links to each other with full duplex serial port on the single-chip microcomputer, digital input keyboard is by the expansion parallel port scanning of single-chip microcomputer, display is controlled by the single-chip processor i/o mouth, the output of peripheral power supply circuit links to each other with the power supply input pin of each part mentioned above, it is characterized in that: also comprise the serial data memory that is used to store charging and ticket, the I of this serial data memory ²The C bus interface links to each other with corresponding interface on the single-chip microcomputer.

2, the described wireless desktop type Charging telephone of claim 1, it is characterized in that: described single-chip microcomputer is connected to external RAM.

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