CN2273079Y - Multifunctional means for telephone - Google Patents
Multifunctional means for telephone Download PDFInfo
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- CN2273079Y CN2273079Y CN 96218485 CN96218485U CN2273079Y CN 2273079 Y CN2273079 Y CN 2273079Y CN 96218485 CN96218485 CN 96218485 CN 96218485 U CN96218485 U CN 96218485U CN 2273079 Y CN2273079 Y CN 2273079Y
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Abstract
The utility model relates to a multifunctional telephone meter, comprising an embezzlement detecting circuit, a single chip computer, a ringing detecting circuit, a detecting circuit for telephone status, a dual-tone multi-frequency (DTMF) signal circuit, a liquid crystal display (LCD) circuit, a voice circuit, a keyboard input circuit, a protecting circuit, a simulating off-hook circuit and an automatic dialing circuit, wherein, the embezzlement detecting circuit, the ringing detecting circuit, the detecting circuit for telephone status, etc. are connected between the single chip computer and a telephone line; the DTMF signal circuit is connected between the protecting circuit and the single chip computer; the protecting circuit is connected between the DTMF signal circuit and the telephone line; the LCD circuit, the voice circuit and the keyboard input circuit is connected with the single chip computer.
Description
The utility model relates to the telephone device in the communications field, particularly relates to a kind of multi-function telephones table.
In recent years, along with popularizing of town and country phone, it is of common occurrence to take the incident that other people telephone wire makes a phone call steathily, causes the unnecessary economic loss of user.Usurp present situation at phone, various types of Device for anti-fraudulent use telephone line arise at the historic moment.
Yet, the detection of existing alarm and control mode great majority are to detect the signal that makes a noise after usurping signal through usurping testing circuit, appropriator be can not hear clearly voice signal that holding wire sends out, there is the people usurping the phone of oneself though the user knows, can not prevents fraudulent use of telephone effectively only according to noise jamming.
The purpose of this utility model is to provide a kind of telephone meter that can effectively prevent fraudulent use of telephone.
Another purpose of the present utility model is to provide a kind of telephone meter with multiple function.
For achieving the above object, the utility model is taked following technical measures:
Multi-function telephones table of the present utility model is provided with a single-chip microcomputer with Data Control effect, by the input of testing circuit, telephone line states is carried out logic determines in single-chip microcomputer, and sends control signal to each executive circuit, carries out function corresponding.Adopt LCD screen to realize multiple Presentation Function; Audio signal busy line when adopting the touch-tone signal circuit to realize usurping, and the emission function of the audio signal of subscriber dialing; Adopt speech chip and simulation circuit for answering, the automatic answer function when realizing crying the unmanned off-hook of line, and with corresponding information stores in the memory of master chip.
Of the present utility model being characterised in that, by ring detecting circuit, usurp the input port that testing circuit User Status testing circuit detected status signal from the telephone wire is sent into single-chip microcomputer respectively, after judging its state, single-chip microcomputer sends command adapted thereto to touch-tone signal circuit, liquid crystal display circuit or simulation off-hook and sound circuit, performance element is made corresponding reaction according to instruction, by the keyboard input circuit, single-chip microcomputer can be called automatic dial-up circuit and carry out ruthless pre-emption and dial automatically, be user-friendly to.
The utility model can be taked following structure:
Multi-function telephones table of the present utility model, comprise and usurp testing circuit, it is characterized in that, also comprise single-chip microcomputer, ring detecting circuit, telephone set state detection circuit, touch-tone signal circuit, liquid crystal display circuit, sound circuit, keyboard input circuit, protective circuit, simulation circuit for answering, automatic dial-up circuit;
Described testing circuit, ring detecting circuit, subsets state detection circuit, simulation circuit for answering and the automatic dial-up circuit usurped is connected between the telephone line of described single-chip microcomputer and subsets; The touch-tone signal circuit is connected between protective circuit and the single-chip microcomputer; Protective circuit is connected between the telephone line of touch-tone signal circuit and subsets; Liquid crystal display circuit, sound circuit and keyboard input circuit are connected with single-chip microcomputer;
Described single-chip microcomputer reads the telephone line states signal by input/output line, send control signal through judging to corresponding units, send the respective audio signal by the touch-tone signal circuit to telephone line, and show corresponding signal or enter the automatic-answering back device state by Single-chip Controlling by liquid crystal display circuit.
Described multi-function telephones table, wherein:
Described single-chip microcomputer can have logic control element, input/output line, read-only and random asccess memory, general register, eight bit serial interface, liquid crystal display control Driver Circuit.
Described multi-function telephones table, wherein:
Described ring detecting circuit can be made up of capacitance resistance that is in series and optocoupler diode, and the electric capacity other end is connected to telephone wire, and the other end of resistance is to the optocoupler diode, and the output of optocoupler diode is connected to the input/output line P43 end of described single-chip microcomputer.
Described multi-function telephones table, wherein:
The described testing circuit of usurping can be made up of two optocoupler diodes that are connected, divider resistance and a triode, the output signal of optocoupler diode is input to the base stage of triode behind divider resistance, the collector electrode of triode is as output, and this output is connected to the input/output line P42 end of described single-chip microcomputer.
Described multi-function telephones table, wherein:
Described telephone set state detection circuit can be made up of a triode and the divider resistance that is connected its base stage, and output signal is input to the input/output line PA41 input of described single-chip microcomputer by the collector electrode of triode.
Described multi-function telephones table, wherein:
Described protective circuit can be made up of a relay, a triode and the protective resistance that is connected on the transistor base, the collector electrode of triode be connected to relay coil input; The input/output line P20-P23 of the data wire of described touch-tone signal circuit and control line and described single-chip microcomputer and P30-P33 end join; Input and output by single-chip microcomputer reception and control audio signal.
Described multi-function telephones table, wherein:
Described liquid crystal display circuit can be made up of a LCD AXLCD, and it is directly driven by the liquid crystal display control Driver Circuit of single-chip microcomputer, receives the data that single-chip microcomputer sends, and shows.
Described multi-function telephones table, wherein:
Described sound circuit can be made up of a speech chip HT10, and the input/output line S31 of it and described single-chip microcomputer joins.
Described multi-function telephones table, wherein:
Described simulation circuit for answering can be made up of a relay, a triode and the current-limiting resistance that is connected on its base stage, and the collector electrode of triode is connected to the input of relay.
Described multi-function telephones table, wherein:
Described automatic dial-up circuit can be made up of a relay and a triode, and the collector electrode of triode is connected to the input of relay, and the base stage of triode is connected to the I/O line end of single-chip microcomputer.
Multi-function telephones table of the present utility model compared with prior art has following function:
The utility model has solved the problem that the existing telephone table can not prevented fraudulent use of telephone effectively effectively, and the utlity model has multiple function, behind the appropriator off-hook, the change in voltage of signal line is gathered by this telephone meter at once, it detect usurp signal after, send audio signal Seize ACK message line at once, and the analog subscriber off-hook, appropriator just can't be got telephone number like this, thereby has prevented fraudulent use of telephone effectively.
The utility model is the organic combination of a multiple function, and at first it has the demonstration time function, under the normal hook state, by the liquid crystal display current time, and can adjust by button, and this function realizes by software.Telephone number and air time that the utility model can explicit user be dialed, and can under the situation that owner stays out, write down telephone number or the password that the other side sends, when going home after, owner consults knowing for information about of writing down early stage by function.Can also directly select, send the telephone number that is stored in the mnemon by this function key in addition, with easy user's operation.
In a word, the utility model such as has realized preventing from reliably to usurp at function.Characteristics such as it gathers multi-function in integral whole, and is reasonable in design, has high performance price ratio, practical, convenient, attractive in appearance.
Describe technology contents of the present utility model in detail below in conjunction with drawings and Examples:
Description of drawings:
Fig. 1, schematic block circuit diagram of the present utility model;
The circuit diagram of Fig. 2, an embodiment of the present utility model;
Fig. 3, software flow pattern of the present utility model.
As shown in Figure 1, the utility model comprise single-chip microcomputer 1, ring detecting circuit 2, usurp testing circuit 3, subsets state detection circuit 4, touch-tone signal control circuit 5, liquid crystal display circuit 6, sound circuit 7, keyboard input circuit 8, protective circuit 9, simulation circuit for answering 10, automatic dial-up circuit 11.
Described testing circuit 3, ring detecting circuit 2, subsets state detection circuit 4, simulation circuit for answering 10 and the automatic dial-up circuits 11 etc. usurped are connected between the telephone line of described single-chip microcomputer 1 and subsets 12; Touch-tone signal circuit 5 is connected between protective circuit 9 and the single-chip microcomputer 1; Protective circuit 9 is connected between the telephone line of touch-tone signal circuit 5 and subsets 12; Liquid crystal display circuit 6, sound circuit 7 and keyboard input circuit 8 are connected with single-chip microcomputer 1;
As shown in Figure 2, it is the circuit diagram of an embodiment of multi-function telephones table of the present utility model, and its core is a single-chip microcomputer 1, adopt integrated circuit UPD75308 in the present embodiment, it has 40 I/O port lines, 4 general registers, No. 3 timers, 8 road serial line interfaces, 3 outer interrupting input ends, 3 interior interrupting input ends, 1 external testing input, 1 close beta input, 1 tunnel liquid crystal drive bus.The input/output port line PORT2 of single-chip microcomputer 1 and PORT3 are as the input of dual tone multi-frequency signal generator; The PORT4 port receives respectively from ring detecting circuit 2, usurps the signal of testing circuit 3 and telephone set state detection circuit 4; I/O port line PORT5 port sends control signal, I/O port line PORT6 and the PORT7 port row, column scan input end as keyboard input circuit 8 to automatic dial-up circuit 11, simulation circuit for answering 10, protective circuit 9, buzzer circuit.Crystal oscillator X1 and capacitor C 6, C7 are connected to the master clock oscillating circuit control input end in the single-chip microcomputer 1 respectively, and crystal oscillator X2 and capacitor C 6, C7 are connected to the auxiliary clock oscillating circuit control input end in the single-chip microcomputer 1 respectively.
In the present embodiment, ring detecting circuit 2 is by optocoupler diode U3, the current-limiting resistance R1 and the capacitor C 1 of serial connection mutually, and protection diode D5 forms.When telephone line is in wait state, because no current process in the optocoupler diode, so be in cut-off state, its input is a high level, works as External Call, when ring takes place, there is electric current to flow through on the optocoupler diode, then can sends corresponding instruction according to program.2 metering functions of resistance R.
In the present embodiment, usurp testing circuit 3 by two optocoupler diode U4, three divider resistance R3, R4, R6 and a triode T1 form, when not usurping the normal condition of phenomenon, the optocoupler diode ends, R6 and R3, the R4 dividing potential drop, triode T1 conducting, the output SHO of triode T1 is output as low level, when usurping phenomenon, telephone line voltages reduces, triode ends, and SHO is output as high level, and this signal is sent into single-chip microcomputer 1, single-chip microcomputer 1 sends instruction to audio signal generator 7, this chip sends audio signal to telephone line and takies telephone line, and the audio frequency of appropriator or pulse signal can't be sent, and has prevented the generation of usurping phenomenon effectively.
Telephone set state detection circuit 4 is made up of divider resistance R9, R10 and triode T3, and behind user's off-hook, the collector electrode output signal of triode T3 is uprised by low, and this signal is sent into single-chip microcomputer 1, and single-chip microcomputer 1 sends instruction to liquid crystal display circuit 6, carries out corresponding demonstration.
Simulation circuit for answering 10 is made up of relay J 2, resistance R 12, triode T2 and protective resistance R16, R17, single-chip microcomputer 1 sends low voltage signal to triode, the triode conducting, there is electric current to pass through in the coil of relay J 2, the J2 adhesive, this moment, R12 went here and there in circuit, and the resistance of R12 is 300 ohm, the resistance that is equivalent to a telephone set has then realized the simulation handoff functionality; The SPC of speech chip U6 end is received instruction simultaneously, sends preset prompting voice to telephone line.Outside line can be imported certain data message to single-chip microcomputer 1 according to some suggestion voices, and deposits in the memory cell of single-chip microcomputer 1.
Automatic dial-up circuit 11 is made up of relay J 3, triode T6 and protective resistance R30, R31.When pressing automatic dial key, single-chip microcomputer 1 sends a pulse to triode T6 after receiving this order: by low-Gao-low level conversion, and triode T6 conducting-disconnection-conducting, relay J 3 has one and disconnects constantly, is equivalent to the artificial electric line that makes and resets; The telephone number that while single-chip microcomputer 1 will be stored in the memory is sent into touch-tone signal circuit DTMF, send number by this circuit to telephone line, if telephone wire is connected, single-chip microcomputer 1 starts I/O port line P50 end and sends low level to triode T5, the T5 conducting, buzzer SP sends warning signal, make the user pick up a receiver, lead to if cry, then single-chip microcomputer 1 is to triode T6 output transform signal, automatic dial-up circuit 11 is repeated, up to cry logical till.
Touch-tone signal circuit 5 can be made up of audio signal generator MT8880C (U4), audio signal amplifier LM386 and some additional resistance electric capacity, it has one road audio input port and one road output port, can receive the audio signal of outside line input, and import single-chip microcomputer 1 into, also the respective signal that single-chip microcomputer 1 can be sent is delivered in the telephone line with voice-frequency signalling and is gone.
Software manual is as follows:
The effect of software of the present utility model is to require to formulate for the control that realizes above multiple function.
The software idiographic flow is seen shown in Figure 3.
At first pass through initialization, promptly fundamental clock is decided in the random asccess memory initialization of single-chip microcomputer 1, enters main program module then, and program constantly scans detection to each input port of single-chip microcomputer 1, and carries out logic determines.
The main program operational mode is as follows: judge at first whether ringing circuit 2 sends into bell signal to single-chip microcomputer 1.If have, then the timer of single-chip microcomputer 1 picks up counting, if before the time reaches 20 seconds people's off-hook is arranged, then program is returned; If still unmanned off-hook after the time reaches 20 seconds, then single-chip microcomputer 1 starts simulation circuit for answering 10, and sends prompt tone by sound circuit 7, judge whether outside line sends data-signal to single-chip microcomputer 1 this moment, if have, then single-chip microcomputer 1 received signal is put into memory, timer adds up simultaneously, if be no more than 6 seconds at interval, then be in continuous reception data mode, and these information stores got off by single-chip microcomputer 1, if surpass 6 seconds at interval, then return main program.
If there is not bell signal, judge then whether User Status testing circuit 4 has signal to send, promptly main frame off-hook whether if having, then carries out returning main program after the main frame off-hook is handled, if do not have, has then judged whether the free call on sb. else's expense through illegal means signal by usurping testing circuit 3.If have then carry out free call on sb. else's expense through illegal means and handle, promptly by single-chip microcomputer 1 to touch-tone signal circuit 5 with send instruction, make touch-tone signal circuit 5 send the audio signal Seize ACK message, and report to the police by liquid crystal display circuit 6 to circuit, return main program then.If no, then judge whether and will dial automatically, if, then start automatic dial-up circuit work, return main program after finishing.If not, then judged whether inquiry by the keyboard input circuit, if having, then start the query processing circuit, promptly read information in single-chip microcomputer 1 memory by function key after, by single-chip microcomputer 1 these information are sent on the LCD.Finish and return main program,, and return main program if not then proceed the current time and show.
Claims (10)
1, multi-function telephones table, comprise and usurp testing circuit, it is characterized in that, also comprise single-chip microcomputer, ring detecting circuit, telephone set state detection circuit, touch-tone signal circuit, liquid crystal display circuit, sound circuit, keyboard input circuit, protective circuit, simulation circuit for answering, automatic dial-up circuit;
Described testing circuit, ring detecting circuit, telephone set state detection circuit, simulation circuit for answering and the automatic dial-up circuit usurped is connected between the telephone line of described single-chip microcomputer and subsets; The touch-tone signal circuit is connected between protective circuit and the single-chip microcomputer; Protective circuit is connected between the telephone line of touch-tone signal circuit and subsets; Liquid crystal display circuit, sound circuit and keyboard input circuit are connected with single-chip microcomputer;
Described single-chip microcomputer reads the telephone line states signal by input/output line, send control signal through judging to corresponding units, send the respective audio signal by the touch-tone signal circuit to telephone line, and show corresponding signal or enter the automatic-answering back device state by Single-chip Controlling by liquid crystal display circuit.
2, multi-function telephones table according to claim 1 is characterized in that:
Described single-chip microcomputer has logic control element, input/output line, read-only and random asccess memory, general register, eight bit serial interface, liquid crystal display control Driver Circuit.
3, multi-function telephones table according to claim 2 is characterized in that:
Described ring detecting circuit is made up of capacitance resistance that is in series and optocoupler diode, and the electric capacity other end is connected to telephone wire, and the other end of resistance is to the optocoupler diode, and the output of optocoupler diode is connected to the input/output line P43 end of described single-chip microcomputer.
4, multi-function telephones table according to claim 2 is characterized in that:
The described testing circuit of usurping is made up of two optocoupler diodes that are connected, divider resistance and a triode, the output signal of optocoupler diode is input to the base stage of triode behind divider resistance, the collector electrode of triode is as output, and this output is connected to the input/output line P42 end of described single-chip microcomputer.
5, the multi-function telephones table of stating according to claim 2 is characterized in that:
Described telephone set state detection circuit is made up of a triode and the divider resistance that is connected its base stage, and output signal is input to the input/output line PA41 input of described single-chip microcomputer by the collector electrode of triode.
6, multi-function telephones table according to claim 2 is characterized in that:
Described protective circuit is made up of a relay, a triode and the protective resistance that is connected on the transistor base, the collector electrode of triode be connected to relay coil input; The input/output line P20-P23 of the data wire of described touch-tone signal circuit and control line and described single-chip microcomputer and P30-P33 end join; Input and output by single-chip microcomputer reception and control audio signal.
7, multi-function telephones table according to claim 1 and 2 is characterized in that:
Described liquid crystal display circuit is made up of a LCD AXLCD, and it is directly driven by the liquid crystal display control Driver Circuit of single-chip microcomputer, receives the data that single-chip microcomputer sends, and shows.
8, multi-function telephones table according to claim 2 is characterized in that:
Described sound circuit is made up of a speech chip HT10, and the input/output line S31 of it and described single-chip microcomputer joins.
9, multi-function telephones table according to claim 1 and 2 is characterized in that:
Described simulation circuit for answering is made up of a relay, a triode and the current-limiting resistance that is connected on its base stage, and the collector electrode of triode is connected to the input of relay.
10, multi-function telephones table according to claim 2 is characterized in that:
Described automatic dial-up circuit is made up of a relay and a triode, and the collector electrode of triode is connected to the input of relay, and the base stage of triode is connected to the I/O line end of single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96218485 CN2273079Y (en) | 1996-08-16 | 1996-08-16 | Multifunctional means for telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96218485 CN2273079Y (en) | 1996-08-16 | 1996-08-16 | Multifunctional means for telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2273079Y true CN2273079Y (en) | 1998-01-21 |
Family
ID=33899320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96218485 Expired - Fee Related CN2273079Y (en) | 1996-08-16 | 1996-08-16 | Multifunctional means for telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2273079Y (en) |
-
1996
- 1996-08-16 CN CN 96218485 patent/CN2273079Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |