CN2298625Y - Telephone intelligence alarm controller - Google Patents

Abstract

The utility model relates to a telephone intelligent alarm controller, comprising a microcomputer, an input keyboard, a telephone interface circuit, a simulating switch circuit, a voice recording and playing circuit, a signal input sensor and a working power supply. An input line of the keyboard is simultaneously connected with a control output circuit of the microcomputer. The microcomputer is also connected with a special programmable dtmf signal transceiver circuit, an interface circuit of a sensor, a sound generating and driving circuit. The controller is also provided with a monitoring amplifying circuit. With simple structure, high intelligent degree and complete functions, the utility model is especially suitable for keeping security in warehouses, banks, shops, hotels and families.

Description

The telephony intelligence alarm controller

The utility model relates to a kind of controller of mainly reporting to the police by the telephone line transferring voice.

At present alarm controller (dialer) is of a great variety, but the degree of intelligence height, multiple functional, highly reliable, be convenient to network, alarm controller simple in structure still belongs to rarely, specifically: for example Called Busy and open, the short trouble processing; Online telephone number volume and P, T dial mode are recorded automatically; Monitor love scene; Functions such as strange land remote telephone electrical equipment can't realize.

The purpose of this utility model is in order to realize functions such as above-mentioned, provide a kind of degree of intelligence height, multiple functional, compliant, highly reliable, be convenient to network, telephony intelligence alarm controller simple in structure.

This purpose is to realize with following technical proposal: it comprises information sensor Ss ₁, Ss ₂, programming keyboard 1, microcomputer 2, insert microcomputer telephone interface circuit 3, with analog switching circuit and audio record circuit 7 that telephone interface circuit joins, also include the power circuit 10 that the entire circuit operating current is provided.Particularly enter on the connecting line of each key assignments of microcomputer at the programming keyboard and be connected to seven system controlled by computer output circuits respectively, output interface is AC1～AC7; Between microcomputer 2 and analog switching circuit 6, be provided with and be connected with special-purpose dtmf signal transmission circuit 5 able to programme; Be provided with between information sensor and the microcomputer and be connected with sensor interface circuitry 4; One input of analog switching circuit 6 is provided with monitors amplifying circuit 8; Directly being provided with sound equipment at the system controlled by computer output produces and drive circuit 9; Directly insert also having of microcomputer by Serial E ²Telephone number that PROM chip U16 and resistance R 33 are formed and sign memory circuit and the conversion switch circuit of forming by amplifier chip U5, resistance R 32 and key switch S2 of withdrawing a garrison, set up defences.

Advantage of the present utility model is: programming keyboard and microcomputer output control circuit are multiplexing for mouthful line, have saved a mouthful line, reduced volume; Adopt special chip MT8880 dtmf signal transmission circuit able to programme to cause following function is arranged: Called Busy, dial next telephone number less than fast automatic transfer in 3 seconds, called unmanned off-hook can change next telephone number automatically; Sensor interface circuitry has out, short trouble is handled, have monitor function; The programming keyboard that is possessed, but online modification telephone number volume are provided with P or T dial mode and recording automatically, and the telephone number capacity is big, length is not limit; Has the strange land distant control function: when report to the police (1), can monitor love scene with called phone switch dish operator password.(2) monitor defence area sound on every side with called phone switch dish operator password at ordinary times.(3) strange land remote telephone electrical equipment is with telephone set keyboard operation instruction password; During warning, send the computer of information such as warning kind, time, address with the dtmf code serial to control centre.

Below in conjunction with description of drawings structure of the present utility model and operation principle thereof:

Fig. 1 is the integrally-built circuit block diagram of the utility model.

Fig. 2 is the utility model physical circuit schematic diagram.

Referring to shown in Figure 1: it has programming keyboard 1 and microcomputer 2, and set telephone interface circuit 3 joins information sensor Ss with microcomputer ₁, Ss ₂ Sensor interface circuitry 4 by a setting inserts microcomputer 2, also has set dtmf signal transmission circuit 5 special-purpose able to programme with computer joins, the dtmf signal transmission circuit other end able to programme links to each other with analog switching circuit 6, audio record circuit 7 joins with output control terminal AC6, AC7, AC9, the AC10 of microcomputer, the monitoring amplifying circuit 8 and the analog switching circuit 6 that are provided with join, and the sound equipment generation of setting and drive circuit 9 insert the AC8 output of microcomputers.The operating current of entire circuit is supplied with by power circuit 10.Referring to Fig. 2, programming keyboard KEY1 adopts 3 * 4 keypads, takies seven mouth lines of microcomputer, and it is shared with system controlled by computer output terminals A C1～AC7 mouth line, and microcomputer (CPU) adopts with the 89C51 single-chip microcomputer, serves as to control core with it.Wherein the composition of telephone interface circuit 3 comprises the photoelectric isolating circuit of being made up of photoelectric isolated chip U12, U13 and peripheral circuit; peripheral circuit refers to the anti-lightning strike or overvoltage crowbar that piezo-resistance M1, M2 constitute; the rectification circuit that diode D1～D4 constitutes also has resistance R 1～R6, capacitor C 1, C2 neon lamp N1 and voltage-stabiliser tube VZ1.Sensor interface circuitry 4 mainly is made up of respectively two-way filter circuit, voltage stabilizing circuit and operational amplification circuit, and wherein one the tunnel is by capacitor C 28, resistance R 29 filter circuits, and voltage-stabiliser tube VZ4 and VZ5 voltage stabilizing circuit and amplifier chip U6 form; Another road is capacitor C 27, resistance R 31 filter circuits, and voltage-stabiliser tube VZ6, VZ7 voltage stabilizing circuit and amplifier chip U7 form.Special-purpose dtmf signal transmission circuit 5 able to programme is made up of the connected peripheral circuit of DTMF transmitting-receiving special chip U10 (MT8880): peripheral circuit includes the NAND gate circuit chip U2 that joins with microcomputer, the detector amplifier that capacitor C 21, resistance R 21 and amplifier chip U7 constitute, the testing circuit that triode T1 and peripheral resistance R 25 thereof, R26, capacitor C 22 constitute.Analog switching circuit 6 is by resistance R 8～R11, capacitor C 3～C6, voltage-stabiliser tube VZ2, VZ3, and discharge circuit chip U8 and analog switch chip U9 form, and simulate switch chip U9 and join with system controlled by computer output AC2～AC5 respectively.Monitoring amplifying circuit 8 is made up of resistance R 12～R16, capacitor C 7, C8, discharge circuit chip U8 and microphone Mic2.Audio record circuit 7 is formed by high-fidelity voice recording and playback ic, microphone Mic1 and the peripheral circuit of core with U11 (ISD1420), and its segmentation direct-read-after-write is connected with AC9, AC10 with system controlled by computer output AC6, AC7 respectively.Tone produces and drive circuit 9 is made up of elements such as monolithic alarm sound generation circuit chip U15, triple-pole switch pipe T2, loud speaker SP1, relay J 2, and it is controlled by microcomputer output terminals A C8.

The operation principle of this controller: programming keyboard KEY1, adopt 3 * 4 keypads to take seven mouth lines of microcomputer (CPU), when system reset (or powering on) time, CPU scans special key assignments and enters various programming operations, referring to Fig. 2, these seven mouth lines are shared with control output AC1～AC7, saved a mouthful line.U1 is the novel 89C51 single-chip microcomputer of low-power consumption, built-in 4K byte E ²PROM can use for programming.Resistance R 34, diode D10, capacitor C 29, inverter chip U5 etc. constitute automatic power-on reset circuit, and S1 is external reset switch, and S2 is the external switch of withdrawing a garrison, and has formed the conversion switch circuit of setting up defences of withdrawing a garrison.In normal work period, external intrusion sensor is not worked, but the manual emergency button still is on the alert (when not connecing cigarette propagated sensation sensor), CPU inquires about this switch.Chip U16 is 4K Bits Serial E ²PROM, it is as telephone number volume, specific cryptosystem, the storage of timing recording sign indicating number.During keyboard operation, can revise the U16 memory parameters, during operate as normal, CPU therefrom reads password and telephone number automatically.Special-purpose dtmf signal transmission circuit U10 able to programme (MT8880) has three kinds of mode of operation: DTMF and sends (dialing, tone prompting etc.) pattern, and DTMF receives (strange land telephone keypad remote control etc.) pattern, and CP detects (this locality and strange land telephone state etc.) pattern.It and cpu i/f are with four parallel-by-bit data wire D0～D3, and promptly the P2 mouth is low four.Do the control line of MT8880, sheet select CS high four with the P2 mouth, the RD of clock φ 2 usefulness CPU? WR and P2.7 are through NAND gate circuit U2 logical combination.Its running clock adopts the cpu system clock, and the system clock that crystal Y1 produces is coupled to the XTL2 end input of MT8880 through capacitor C 23.Y1 adopts colored carrier wave 3,579, the 545MHz of paying of standard.The 13 pin output signals of special chip U10 obtain CP detecting pattern signal tone status signal through diode D7, capacitor C 21, resistance R 21 detections, comparator through amplifier chip U7 formation, send into the control end 18 arrival U10 internal state registers confession software detection of chip U10 again through triode T1, the other end of comparator U7 is taken from the reference voltage (V of special chip U10 _REF).

Amplifier chip U6, U7 are respectively two sensors Ss1, Ss2 interface comparison circuit (level examination), and VZ4～VZ7 is the reference voltage voltage stabilizing didoe.External sensor inserts the voltage divider that resistance R 28～R31 forms, when external sensor wrong (weak point, open circuit or holding wire bump power supply) or self work undesired, through U6, U7 comparison circuit output logic difference, CPU software inquires fault, four kinds of logic states such as report to the police, normal are correspondingly sent different phonetic and alarm sound prompting.

Telephone line is in T, R two-terminal, and M1, M2 are that piezo-resistance prevents thunderbolt and overvoltage, and diode D1～D4 is a rectification circuit, extract bell signal, through U12, U13 photoelectric isolated chip signal is delivered to the P3.4 mouth line of CPU, the P3.4 mouth is a low level at ordinary times, when taking place to report to the police, when local call takies, photoelectric isolated chip U13 exports high level, after the CPU inquiry, and control analog switch U9, start speech chip U11 playback, prompting user on-hook.Monitor and divide two kinds of occasions: a kind of is when reporting to the police, after the user hears audio alert information, desire is monitored love scene, press telephone keypad and monitor password, special chip U10 (MT8880) receives, after the CPU identification, amplify chip U8 → AC5 → U8 → AC2 → TP2 signal flow to delivering to telephone set T, R end, monitor the love scene sound through stored-program control exchange to the strange land subsets again according to microphone Mic2 in Fig. 2 circuit → voice.For improving timeliness, desiring to withdraw from, by the password that withdraws from the telephone set, shutdown (AC1 control relay J1) automatically behind a string Tip Sound takes place in MT8880.And then dial next Subscriber Number again.Go round and begin again, make this machine reach automatically, highly intelligent, high timeliness, information truth is effect completely.

During another kind of not warning (normal monitor state), the user leaves the place of setting up defences, all can monitor the scene at any telephone set with double-tone keyboard, signal flow is to being photoelectric isolated chip U12 → interrupt INT 1, the ringing number programmable, it is off-hook that telephone set (by AC1 control) is connected in 1 the number back of interrupt INT that reaches software counting regulation, and number of times is bordering on 0 (dumbbell)-5 and time chooses wantonly.For making telephone set use at ordinary times unaffected, after reaching the interruption counting, stipulate that again the user must start monitoring by password, do not grasp cryptographic consumer and can not get involved monitoring, audio frequency transformer TP2 is a signalling channel.Buffer action is arranged simultaneously.Photoelectric isolated chip U12, U13 also have good buffer action among the figure.Relay J 1 is finished under CPU control and is plucked or functions such as on-hook, pulse dialing, state indication.VZ2, VZ3 are the double limiting voltage stabilizing didoe, the signal tone remote signal flows to: through the input of the special-purpose transmission circuit chip U10 of transformer TP2 → voltage-stabiliser tube VZ2, VZ3 → capacitor C 3 → amplifier chip U8 → signal (MT8880), and dtmf signal output → chip U9 analog switching circuit (AC3 control) → chip U9 → comprehensive simulation switch of MT8880 (by AC2 control) → TP2 → telephone exchanger.The AC3 of analog switch U9, AC4, AC5 control compile a bit, and time-sharing operation, AC4 are voice channel, and AC5 is for monitoring passage.Monitoring circuit is mainly formed highly sensitive sound discharge road by microphone Mic2, amplifier chip U8, and AC4 control analog switch chip U9 through amplifier chip U8, is exported by speech chip U11 (ISD1420).Chip U11 is the monolithic audio record circuit, and information can be preserved 10 years, and the recording playback number of times reaches 100,000 times repeatedly, the fidelity height.AC6 is recording control automatically, and AC7 is automatic playback control.Sound, is stored after digital processing through capacitor C 32, C33 input by microphone Mic1.Luminous tube D11 is the indication of recording playback sound, and recording is lighted often, and is bright by the voice segments instantaneous point during playback.

U15 produces circuit for the monolithic alarm sound, and by AC8 control triode T2, T2 makes chip U15 earthing and works, so the various sound equipments of can programming, for example being interrupted sound equipment is fault, and tone sandhi is a Normal Alarm etc.Built-in loudspeaker SP1 is 8 Ω, and 500mw loud speaker, J2-1 output contact can drive 10w high pitch warning signal.

Claims (6)

1. telephony intelligence alarm controller, it comprises information sensor S1, S2, telephone interface circuit (3), analog switching circuit (6) and the audio record circuit (7) of programming keyboard (1), microcomputer (2), access microcomputer, supply with the power circuit (10) of entire circuit operating current in addition, it is characterized in that entering on the connecting line of each key assignments of microcomputer at the programming keyboard and be connected to seven system controlled by computer output circuits respectively, its output interface is AC1～AC7; Between microcomputer (2) and analog switching circuit (6), be provided with and be connected with special-purpose dtmf signal transmission circuit able to programme (5); Be provided with between information sensor and the microcomputer and be connected to sensor interface circuitry (4); One input of analog switching circuit (6) is provided with monitors amplifying circuit (8); Be provided with directly at the system controlled by computer output that sound equipment produces and drive circuit (9) directly inserts also having by Serial E of microcomputer ²Telephone number that PROM chip U16 and resistance R 33 are formed and sign memory circuit and the conversion switch circuit of forming by compute chip U5, R32 and switch S 2 of withdrawing a garrison, set up defences.

2. telephony intelligence alarm controller according to claim 1, it is characterized in that described telephone interface circuit (3) is by photoelectric isolated chip U12, U13 and peripheral circuit: piezo-resistance M1, M2, resistance R 1～R6, capacitor C 1, C2, diode D1～D4, neon lamp N1, the photoelectric isolating circuit that voltage-stabiliser tube VZ1 constitutes; Transformer TP2 and peripheral circuit thereof; Voltage-stabiliser tube VZ2, VZ3, isolation and match circuit that resistance R 3 constitutes; Isolation and control circuit that relay J 1, diode D5 and light-emitting diode D6 constitute are formed.

3. telephony intelligence alarm controller according to claim 1, the system controlled by computer output circuit that it is characterized in that being connected on programming keyboard (1) incoming line is made up of inverter U3 and row's resistance.

4. telephony intelligence alarm controller according to claim 1, it is characterized in that described special use dtmf signal transmission circuit able to programme (5) is made up of the peripheral circuit of special chip U10 (MT8880) and connection thereof, wherein peripheral circuit has the NAND gate circuit chip U2 that joins with microcomputer (2) output; The signal amplification circuit that constitutes by amplifier chip U8 and peripheral resistance R 20 thereof, R19, R18, capacitor C 3, the detection comparison circuit that constitutes by capacitor C 21, resistance R 21, R22 and amplifier chip U7; By triode T1 and peripheral resistance R 24 thereof, R25, R26, the testing circuit that capacitor C 22 constitutes.

5. telephony intelligence alarm controller according to claim 1, it is characterized in that sensor interface circuitry (4) mainly is made up of two-way filter circuit, voltage stabilizing circuit and comparison circuit, wherein one the tunnel is the filter circuit that is made of capacitor C 28, resistance R 28, R29, and voltage stabilizing circuit and amplifier chip U6 that voltage-stabiliser tube VZ4 and VZ5 constitute constitute; Another road is the filter circuit of capacitor C 27, resistance R 30, R31 formation, and voltage stabilizing circuit and amplifier chip U7 that voltage-stabiliser tube VZ6, VZ7 constitute constitute.

6. according to claim 1,2,3,4 or 5 described telephony intelligence alarm controllers, it is characterized in that described monitoring amplifying circuit (8) is made up of microphone Mic2, amplifier chip U8 and peripheral circuit thereof.

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