CN2271076Y - Pre-alarm device for intelligency telephone - Google Patents

Abstract

The utility model discloses an intelligent telephone pre-alarm device in the alarm technical field. An input port of a single-chip microcomputer is connected with a keyboard, switches for inner and outer lines and a radio-frequency coding receiving circuit; an outlet port of the microcomputer is connected with an outer alarm interface, a signal interface circuit and a voice recording and playing circuit. The outputs of the signal interface circuit and the voice recording and playing circuit are connected with a telephone circuit whose output is connected with an A/D input end of the single chip microcomputer; the telephone circuit is connected with a telephone line. The utility model has the advantages of strong anti-interference ability, no need of complicated wire laying and reliable work, and can automatically adapt to exchangers in different areas and different types.

Description

The smart phone early warning plane

The utility model relates to warning device, particularly adopts the warning device of computer technology, A/D adaptive technique, radio frequency coded telecommand technology, speech signal digital processing technology and telephone communication technology.

Adopt lead to connect between telephone alarm device detector in the past and the main frame, it is loaded down with trivial details to connect up, destroyed easily; Because the signal level difference of the dissimilar switches in different regions is very big, error rate was higher when telephone alarm device was in the past discerned telephone path signal, and incompatible China is the complicated national conditions of switch at present; Telephone alarm device in the past can not use inside line to dial outside line reliably.

The purpose of this utility model is to provide a kind of antijamming capability strong, need not loaded down with trivial details wiring, and reliable operation can adapt to the smart phone early warning plane of different regions, dissimilar switches automatically.

The utility model comprises single chip microcomputer circuit, operation keyboard, internal and external line switch, radio frequency coding receiving circuit, audio record circuit, outer remote alarm interface, signal interface circuit and telephone circuit.The input port of operation keyboard, internal and external line switch, radio frequency coding receiving circuit delivery outlet order sheet microcomputer circuit, single chip microcomputer circuit delivery outlet connects outer remote alarm interface, signal interface circuit and audio record circuit.The signal interface circuit delivery outlet circuit of answering the call, the audio record circuit circuit output end circuit of answering the call, telephone circuit output telephone path signal be to the A/D input of single chip microcomputer, telephone circuit and telephone wire connection.

The utility model will be further described below in conjunction with accompanying drawing.

Fig. 1 is the block diagram of the utility model number.

Fig. 2 is the electrical schematic diagram of single chip microcomputer circuit of the present utility model, internal and external line switch, outer remote alarm interface and signal interface circuit.

Fig. 3 is the electrical schematic diagram of the utility model radio frequency coding receiving circuit.

Fig. 4 is the electrical schematic diagram of the utility model audio record circuit.

Fig. 5 is the electrical schematic diagram of the utility model telephone circuit.

The state of single chip microcomputer circuit 1 comprehensive each several part provides different control logics; Operation keyboard 2 is finished the coding to operation keyboard; Internal and external line switch 3 is finished the coding of internal external line state; The effect of radio frequency coding receiving circuit 4 is to receive the radiofrequency signal that alarm sends and separate the responding source code; Audio record circuit 5 is finished recording, storage and the playback of voice; Outer remote alarm interface 6 output alarm level outside machine; Signal interface circuit 7 is interfaces of single chip microcomputer circuit 1 and telephone circuit 8; Telephone circuit 8 is finished the machine of proposing, dialing, is sent voice signal and provide telephone path signal to single chip microcomputer circuit 1 to telephone wire.

U5 among Fig. 2 is 8 single chip microcomputers 1 (87C552), and SW1 is an internal and external line switch 3, and JK1 is outer remote alarm interface 6, and U3 and U4 are signal interface circuit 7, and JK3 is an operation keyboard 2, and JK is a radio frequency coding receiving circuit 5.The P0 mouth of 8 single chip microcomputer U5 (87C552) connects the input of inverter U3, U4 (7406), the output of inverter U3, U4 (7406) connects telephone circuit 8, realize the isolation of 8 single chip microcomputer U5 (87C552) and output telephone circuit 8, the chip pin P5.0 (BUSY) of 8 single chip microcomputer U5 (87C552) is the A/D input port, connects telephone circuit 8; Chip pin P5.3, the P5.4 of 8 single chip microcomputer U5 (87C552), P5.5, P3.2 and the output (JK) of radio frequency coding receiving circuit 4 link to each other; The P4 mouth of 8 single chip microcomputer U5 (87C552) connects internal and external line switch 3 (SW1); Chip pin P1.0, the P1.1 of 8 single chip microcomputer U5 (87C552), P1.2, P1.3 link to each other with outer remote alarm interface 6 (JK1) by resistance R 2, R3, R4, R5; P2 mouth join operation keyboard 2 (JK3) of 8 single chip microcomputer U5 (87C552); Chip pin P1.4, the P1.5 of 8 single chip microcomputer U5 (87C552), P1.6, P1.7, P3.4, P3.5, P3.6 connect audio record circuit 5; The chip pin P3.1 (HOLD) of 8 single chip microcomputer U5 (87C552) connects telephone circuit 8.

Radiofrequency signal among Fig. 3 is imported from antenna A1, amplify through high frequency receiving circuit QT, be connected to the input of operational amplifier U1 (LM358) by resistance R 1, signal after operational amplifier U1 (LM358) shaping is connected to the input of decoding chip U2 (VD5027) in the digital decoding circuit by the output of operational amplifier U1 (LM358), decoded digital signal exports the output JK of radio frequency coding circuit to from pin VALID, the D6 of decoding chip U2 (VD5027), D7, D8, D9 end, links to each other with 8 single chip microcomputer U5 (87C552) among Fig. 2.

IS among Fig. 4 is monolithic speech recording and reproducing integrated circuit ISD2590, its recording playback state passes through its pin P1.4 by 8 single chip microcomputer U5 (87C552) among Fig. 2, P1.5, P1.6, P1.7, P3.4, P3.5, P3.6 controls, voice signal is from the pin MIC input of monolithic voice recording and playback ic IS (ISD2590) during recording, it is inner and stored by it to enter monolithic voice recording and playback ic IS (ISD2590) by capacitor C16, the voice signal of being recorded during playback is connected to (YOUT) in the telephone circuit from the pin SP+ end output of monolithic voice recording and playback ic IS (ISD2590) through capacitor C46.

Fig. 5 is the electrical schematic diagram of the utility model telephone circuit.The machine of the carrying signal (HOLD) that 8 single chip microcomputer U5 (87C552) send among Fig. 2 is added on the base stage of triode V2 by level isolating diode D9, D8 and resistance R 19; triode V2 saturation conduction; make triode V1 saturation conduction, the voltage on the telephone wire is added on the LN end and capacitor C44 of resistance R 71, R16, speech transmissions integrated chip IC2 (TEA1062) by polar protective circuit BD and triode V2.Dialing integrated circuit (IC) 1 obtains supply power voltage by diode D3 and resistance R 71; diode D4 and electrolytic capacitor E24 make voltage stable; 8 single chip microcomputer U5 (87C552) dial the number by signal interface circuit inverter U3 and U4 control dialing integrated chip IC1 (W91541A) among Fig. 2; pulse dialing signal exports triode V2 base stage to from chip pin DP/C5 (PULSE) end of dialing integrated chip IC1 (W91541A); the break-make of control triode V1 realizes pulse dialing; the dual-tone dialing signal is from the chip pin DTMF end output of dialing integrated chip IC1 (W91541A); be connected to the chip pin DTMF end of speech transmissions integrated chip IC2 (TEA1062) through capacitor C41; amplify through speech transmissions integrated chip IC2 (TEA1062), be sent on the telephone wire by triode V1 and polar protective circuit BD from the chip pin LN end of speech transmissions integrated chip IC2 (TEA1062).The chip pin MIC+ end that the output of Fig. 4 audio record circuit (YOUT) is connected to speech transmissions integrated chip IC2 (TEA1062) amplifies through speech transmissions integrated chip IC2 (TEA1062), is sent to telephone wire from its pin LN end.Telephone path signal on the telephone wire outputs to the A/D input of 8 single chip microcomputer U5 (87C552) among Fig. 2 through extreme protective circuit BD, triode V1 and capacitor C44.When using as ordinary telephone set; voice signal is imported from microphone MIC1; be connected to the chip pin MIC+ end of speech transmissions integrated chip IC2 (TEA1062) through capacitor C15; amplify through speech transmissions integrated chip IC2 (TEA1062); be sent to telephone wire from its chip pin LN end; voice signal on the telephone wire is through polar protective circuit BD; triode V1; resistance R 16 and capacitor C11 are input to the chip pin IR end of speech transmissions integrated chip IC2 (TEA1062); after speech transmissions integrated chip IC2 (TEA1062) amplifies, output to the receiver SH through electrolytic capacitor E4 from the chip pin QR end of speech transmissions integrated chip IC2 (TEA1062).

When single chip microcomputer circuit 1 has recognized key when pressing from operation keyboard 2, single chip microcomputer circuit 1 is realized recording or playbacks according to the key control audio record circuit of being pressed 5.When radio frequency coding receiving circuit 4 receives the coding that alarm sends, the data of alarm source are sent to an input port of single chip microcomputer circuit 1, control single chip microcomputer circuit 1 is by output port control audio record circuit 5 and signal interface circuit 7, make telephone circuit 8 work, after finishing dialing, be sent to the A/D input port of single chip microcomputer circuit 1 from the telephone path signal of telephone circuit 8 outputs, behind the state of single chip microcomputer circuit 1 this signal of identification, control audio record circuit 5 and signal interface circuit 7 to broadcasting the alarm voice of recording in advance in audio record circuit 5 on the telephone wire, and judge whether phone is put through by telephone circuit 8, take over or the line is busy.In internal and external line switch 3 places during line states, after single chip microcomputer circuit 1 recognizes this state by the input port that links with internal and external line switch 3, before above-mentioned dialing, make telephone circuit 8 dial a number of storage in advance by signal interface circuit 7 earlier, be sent to the A/D input port of single chip microcomputer circuit 1 then from the telephone path signal of telephone circuit 8 outputs, the state of this signal of single chip microcomputer circuit 1 identification is if put through then continues to dial following number.Because the telephone path signal level size that receive in different places has very big difference, the utility model has adopted the A/D adaptive technique, before each dialing, the A/D input port of single chip microcomputer circuit 1 reads the level value of telephone path signal earlier from telephone circuit 8, and be stored in the single chip microcomputer circuit 1, judge the reference level of telephone path signal as the dialing back with this.In telephone call, single chip microcomputer circuit 1 by outside remote alarm interface 6 output signals of output port to control other warning means.

The utility model and alarm source wireless connections adopt numerical ciphers to distinguish alert source, and antijamming capability is strong, need not loaded down with trivial details wiring, is not easy destroyed; Adopted advanced A/D adaptive technique, can discern and adapt to automatically the signal level difference of different regions, dissimilar switch exactly, error rate reduces greatly during the identification telephone path signal, adapts to China's complicated national conditions of switch at present; No matter telephone line is direct dialing or interior lines, and the utility model can both reliably working.

Claims (3)

1, smart phone early warning plane, it comprises single chip microcomputer circuit, interface circuit and telephone circuit, it is characterized in that: the input port of described single chip microcomputer circuit connects operation keyboard, internal and external line switch, radio frequency coding receiving circuit, the delivery outlet of single chip microcomputer circuit connects outer remote alarm interface, signal interface circuit and audio record circuit, the signal interface circuit delivery outlet circuit of answering the call, the audio record circuit output circuit of answering the call, telephone circuit output telephone path signal is to the A/D input of single chip microcomputer circuit, and telephone circuit and telephone wire connect.

2, smart phone early warning plane according to claim 1, it is characterized in that: the I/O mouth of 8 single chip microcomputer U5 (87C552) connects the input of inverter U3, U4 (7406) in the signal interface circuit in the single chip microcomputer circuit, the output of inverter U3, U4 (7406) connects the dialing integrated chip IC1 (W91541A) in the telephone circuit, and the A/D input port among 8 single chip microcomputer U5 (87C552) connects the capacitor C44 in the telephone circuit; The I/O mouth of 8 single chip microcomputer U5 (87C552) links to each other with monolithic voice recording and playback ic IS (ISD2590) in the output JK of radio frequency coding receiving circuit, internal and external line switch SW 1, the operation keyboard JK3 audio record circuit respectively; The I/O mouth of 8 single chip microcomputer U5 (87C552) links to each other with outer remote alarm interface JK1 by resistance.

3, smart phone early warning plane according to claim 1, it is characterized in that: antenna A1 is connected with the input of high frequency receiving circuit QT, its output is connected to the input of operational amplifier U1 (LM358) by resistance R 1, signal after operational amplifier U1 (LM358) shaping is connected to the input of decoding chip U2 (VD5027) in the digital decoding circuit by output, decoded digital signal exports the output JK of radio frequency coding circuit to from pin VALID, D6, D7, D8, the D9 end of decoding chip U2 (VD5027).

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