CN2181788Y - Intelligent message accounting device for single telephone - Google Patents

Abstract

The utility model provides an intelligent message accounting device for a single telephone, which is composed of an input interface circuit, a single chip computer, a memory, an output interface circuit, a displayer and a power supply. The input interface circuit of an intelligent message accounting circuit is provided with a tone testing circuit, the audio signals of the a and b lines of users can be sent to the single chip computer through amplifying and decoding, the recognition can be realized by the single chip computer, and when the long tone of the counterpart disappears, the charging begins. The utility model solves the technological problem that domestic consumer can realize automatic message accounting under the condition of no special service of a telecommunication department. The utility model has the function of theft protection, the optimum structure of the utility model can be realized, and the utility model has the advantages of complete function and equitable price.

Description

Intelligent message accounting device for single telephone

The utility model relates to a kind of smart phone unit taximeter, belongs to communication technical field.

Along with the rapid increase of telephone device capacity, China's phone is popularized the expansion of face, and the telephone charges what state can accomplish that the user has several problems very urgent for family and unit.Therefore, the birth of many telephone charge counters, alarm is arranged.Prove by retrieval, present various long-distance call, local telephone network taximeter are all taken from telephone user a, b line polarity reversing signal as the charging commencing signal, this signal is provided with to the special user as a kind of special clothes function by telecommunication department, and general user's line does not have this signal, can't realize automatic charging.

The purpose of this utility model be to provide a kind of do not need special clothes and meet existing telephone charges regulation can accurate billing, be suitable for the smart phone unit taximeter of domestic consumer.

The technical solution of the utility model is achieved in that it is made up of input interface circuit, single-chip microcomputer, output interface circuit, display, memory and power supply.The signal tone testing circuit is arranged in input interface circuit.It will amplify from the voice signal that user a, b line are fetched after single-chip microcomputer is given in the decoding decoding, in order to identification charging beginning.Its input termination user a, b line, output connects the single-chip processor i/o mouth.

The signal tone testing circuit is made up of sampling amplification circuit and audio coding decoding circuit.Signal is taken from telephone user a, b line, but is not to get its polarity reversing signal, delivers to the single-chip processor i/o mouth but get its voice signal through amplifying, decipher decoding, is judged by software, begins to charge when captain's sound disappears when the other side carries.

Input interface circuit is made up of signal tone testing circuit and control circuit.Control circuit comprises outside line voltage detecting circuit, power control circuit and antitheft executive circuit composition.Outside line voltage detecting circuit input answer the call machine subscribers feeder a, b get treated single-chip microcomputer and the power control circuit delivered to of its voltage signal.Antitheft executive circuit is carried machine enabling signal HK by single-chip microcomputer according to outer line detection circuit and this machine and is judged whether that really this machine is put forward the operating state that machine is exported the antitheft executive circuit of a signal controlling.The output of antitheft executive circuit connects user a, b line and alarm.

Fig. 1 is the utility model logic diagram, and Fig. 2 is for implementing circuit theory diagrams.Accompanying drawing is described and further narrates the technical solution of the utility model and embodiment now:

Input interface circuit is made up of signal tone testing circuit 1 and control circuit 2 among Fig. 1. The signal tone testing circuit is made up of sampling amplification circuit and audio coding decoding circuit. The voice signal of taking from telephone user a, b line amplifies the I/O mouth of delivering to single-chip microcomputer 3 by the decoding decoding, judges that by software the other side carries machine, long is the charging commencing signal when disappearing. Control circuit is made up of outside line voltage detecting circuit, power control circuit and antitheft executive circuit. The outside line voltage detecting circuit is made up of rectification circuit, photoelectrical coupler and not circuit. Signal is taken from telephone user a, b line, and as a, when the b line drop is low, the outside line voltage detecting circuit send a signal to power control circuit, and power supply is added whole Circuits System. This signal and this machine are carried an enabling signal HK that machine produces and are delivered to simultaneously single-chip microcomputer and judge whether that this machine carries machine. If this machine is carried machine, antitheft executive circuit is not worked, the normal talking timing. Talk-through, the on-hook of this machine elder generation, a, b line voltage uprise, and single-chip microcomputer enters the on-hook handling procedure automatically, deposits in the memory such as dialing telephone number, air time. If the on-hook of the other side elder generation, a, b line are sent busy tone here, deliver to single-chip microcomputer through the signal that the signal tone testing circuit is processed, by finishing above-mentioned identical work after the software identification.

If other people are extension telephone on a, b line illegally, in case carry machine, outside line voltage detecting electricity Drive test is low to a, b line drop, but this machine does not have the HK enabling signal, the antitheft executive circuit work of Single-chip Controlling, and discontinuity is connected loop with small resistor and is made illegal extension telephone machine cisco unity malfunction on the one hand, reports to the police on the other hand. When the other side's on-hook, circuit immediate recovery normal condition. If broken string inserts phone; A, b line voltage are 0 o'clock, and antitheft executive circuit also sends alarm signal.

Output interface circuit 4 comprises telephone number sampling decoding circuit and display interface. Telephone number sampling decoding circuit links to each other with the telephone keyboard circuit. The host keyboard signal processed give single-chip microcomputer, single-chip microcomputer deposits memory 5 in after telephone number signal and air time are processed. Display interface circuit links to each other with display. When needs are inquired about, click display switch, single-chip microcomputer accesses all information automatically from memory, comprise local telephone network total degree, long-distance call total degree, each long-distance call air time and talked about telephone number etc. being shown by display 6.

The utility model timing metering meets GB and international standard, charging accurately and reliably, have an anti-theft feature, because local circuit optimization, low price are particularly suitable for domestic consumer and are used for the ticketing supervision, preferably promotional value is arranged.

The utility model embodiment is provided by Fig. 2:

Single-chip microcomputer selects for use 80C51, audio coding decoding circuit to be made up of photoelectrical coupler and relay, alarm with LM567, antitheft executive circuit, display interface is made up of two 74HC164 shift registers and three MC14066 analog switches, the display LCD, the power supply dry cell.Other are not difficult to find out by Fig. 2 principle.

Claims (3)

1, a kind of smart phone unit taximeter, form by input interface circuit, single-chip microcomputer, memory, output interface circuit, display and power supply, it is characterized in that having in the input interface circuit signal tone testing circuit that voice signal on user a, the b line is taken a sample and handled, its input termination user a, b line, treated voice signal is given the single-chip processor i/o mouth by output, discerns its long by single-chip microcomputer and disappears as the charging commencing signal.

2, smart phone unit taximeter according to claim 1, it is characterized in that the signal tone testing circuit is made up of sampling amplification circuit and audio coding decoding circuit, sampling amplification circuit input termination user a, b line are got its voice signal, deliver to the audio coding decoding circuit after the amplification, the output of audio coding decoding circuit connects the single-chip processor i/o mouth.

3, smart phone unit taximeter according to claim 1 and 2, it is characterized in that input interface circuit is made up of signal tone testing circuit and control circuit, control circuit is by the outside line voltage detecting circuit, power control circuit and antitheft executive circuit are formed, outside line voltage detecting circuit input termination user a, the b line gets that its voltage signal is treated delivers to single-chip microcomputer and power control circuit by output, antitheft executive circuit input connects single-chip microcomputer, carry machine enabling signal HK by single-chip microcomputer according to outside line voltage detecting circuit and this machine and judge whether that really this machine is put forward the operating state that machine is exported the antitheft executive circuit of a signal controlling, the output termination user a of antitheft executive circuit, b line and alarm.

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