CN2252462Y - Telephone remote control and filtering device - Google Patents

Abstract

The utility model relates to a telephone remote control and filtering device, which belongs to an auxiliary telephone device. The telephone remote control and filtering device is mainly composed of a processor unit 1, a dual-tone receiving unit 2, a ringing detection and restoration unit 3, an electronic switch unit 4, a speech conveying unit 5, a voltage regulation unit 6, an off-hook detection unit 7, a power amplification unit 8 and a wireless control unit 9. The device realizes the functions of utilizing telephone lines to remotely control power sources of electric appliances in homes in different places and identifying and filtering incoming telephones, and does not influence and interfere the normal running of city telephone networks. The device has the advantages of simple structure, reliable work, low cost, safe use, and convenient installation and operation, and is capable of being used in families provided with telephones.

Description

Remote telephone and filtering device

The utility model belongs to a kind of novel telephone network servicing unit, a kind ofly utilizes phone that appliances power source in the man is carried out the strange land remote control and discerns filtering and do not want to listen the device answer the call throwing phone into thereby especially relate to.

In recent years, phone is just being come into huge numbers of families as one of most important means of communication.People also wish to utilize phone that electrical equipment in the man is realized the strange land remote control except can talking at a distance by phone.On the other hand, universal day by day along with phone, making nuisance calls happens occasionally, and how preventing to make nuisance calls also is one of people's problem anxious to be solved.

Do not see the product that has remote telephone and filtering function concurrently in the market as yet.Though being arranged, the publication introduction crosses the imagination of constructing this type of device, but the deficiency that has function singleness mostly, can not arbitrarily change etc. as remote control password and filtering number, particularly the final control section of remote controller---AC power control section and remote controller main body are often by wired connection, thereby alternating current might seal in the normal operation that local network influences and disturb local network like this.

The purpose of this utility model is to provide a kind of reliable operation, and is with low cost, safe in utilization, installs, easy to operate remote telephone and filtering device.By its people can not only utilize phone the strange land to family in electrical equipment carry out remote control and also can to throw into phone filter with avoid those not want to listen connecing with the making nuisance calls of malice.This device does not influence the normal use of original call, and local network is also had no effect.

The purpose of this utility model can reach by following measure.Make an explanation in the lump in conjunction with the accompanying drawings at this.

Fig. 1 is remote telephone and filtering device block diagram.

Fig. 2 is remote telephone and filtering device electrical schematic diagram.

See figures.1.and.2, a kind of remote telephone and filtering device, it is by the processor list Unit 1, double-tone receiving element 2, ring detection and reset unit 3, electronic switch unit 4, Telecommunication unit 5, voltage regulation unit 6, off-hook detection unit 7, power amplifier unit 8 and wireless Control module 9 forms, its architectural feature be telephone wire respectively with double-tone receiving element 2, Electronic switch unit 4, off-hook detection unit 7 links to each other the output of double-tone receiving element 2 A0-A3 links the input RA0-RA3 of processor unit 1, the output A4 of double-tone receiving element 2 Link the input RB0 of processor unit 1, ring detection and reset unit 3 be by triode T10, Resistance R 2-R8, diode D11-D15, capacitor C 3, C4 consist of negative electrode B1 and the T10 of D14 The input RB1 of colelctor electrode, processor unit 1 link to each other the negative electrode B3 of D13 and processor list The output RB2 of unit 1 links to each other, and the negative electrode of D12 links to each other with hand-reset key K1, the end B2 of R8 Link to each other with the reset terminal RST of processor unit 1, the E2 of electronic switch unit 4 links respectively The anode G1 of D19 in the F1 of telecommunication unit 5 and the voltage regulation unit 6, electronic switch unit 4 E1 links to each other with the output RB3 of processor unit 1, the E3 of electronic switch unit 4 respectively with surely Press the G4 of unit 6 to link to each other with the B4 of ring detection with reset unit 3, the failing of telecommunication unit 5 Enter F2 and link to each other voltage regulation unit 6 with the J of power amplifier unit 8 and the output RB4 of processor unit 1 By triode T3, T4, resistance R 9-R13, diode D16-D19, DZ, capacitor C 1, C2 Etc. formation, the negative electrode of D18, D19 links to each other the anode of D18 by the base stage of resistance R 12 and T4 One end H1 of G3 and off-hook detection unit 7 links to each other, and the output G2 of voltage regulation unit 6 links processing The power end VDD of device unit 1, the H2 of off-hook detection unit 7 link processor unit 1 Input RB5, wireless energy control units 9 is by high frequency transmission circuit, high frequency receiving circuit and power supply Control circuit forms, the input M of wireless energy control units 9 and the output RB6 of processor unit 1 Link to each other.

Processor unit 1 is one and comprises EPROM, RAM, I/O mouth, the microprocessor of CPU P1C16C56, this processor are used for depositing program code, remote control cipher and owner's approval Telephone number. Processor also is responsible for receiving and sending various signals simultaneously: receive reset signal The RST processor is started working; Receive bell signal RB1, ring is counted; Receive The key entry of being sent here by double-tone receiving element 2 number; Receive off hook signal RB5; Send the control that resets Signal RB2 processed is to open or to close reset circuit; Export square wave to telecommunication unit 5 at RB4 To send prompting sound; Export high or low level to open or to close electronic switch unit at RB3 Thereby 4 connect or the circuit of hanging up the telephone; Arrive wireless energy control units 9 at RB6 output remote control mode With remote control electrical appliance; Export the square wave of high and low alternate two kinds of frequencies at RB4 to power amplifier unit 8 Produce ringing tone to drive buzzer. K switch 2 links to each other with the input RB7 of processor unit 1, Being used for arranging it is to be in remote control and filtering state or remote state only.

Double-tone receiving element 2 is made of telecommunications application-specific integrated circuit (ASIC) MT8870 and peripheral circuit, and its effect is to receive number that the user keys in by telephone set, order and give processor unit 1.This unit has 5 output line A0-A4 to be wired to processor unit 1, and wherein 4 is data wire, and 1 is the output active line.When integrated circuit MT8870 received a signal, the output active line just can be exported a positive pulse to processor unit 1 fetching data with announcement.

Ring detection and reset unit 3 be by triode T10, resistance R 2-R8, diode D11-D15, formations such as capacitor C 3, C4.The negative electrode of D14 links to each other with the collector electrode of T10, and the output RB2 of the negative electrode of D13 and processor unit 1 links to each other, and the negative electrode of D12 links to each other with hand-reset key K1.The effect of this unit is to detect bell signal, gives processor unit 1 after the shaping, generates a reset signal to processor unit 1 simultaneously and makes it to start working.Bell signal is added to base resistance R4 through resistance R 2, R3 dividing potential drop and go up drives triode T10, and bell signal outputs to the RB1 of processor unit 1 by the collector electrode of T10, and this signal is high level at ordinary times.In case occur the low level of certain width on the collector electrode of T10, just can make the rapid conducting of diode D14, through capacitor C 4, resistance R 8 produces a negative pulse and gives processor unit 1 as reset signal, after starting working, arrives by processor the negative electrode of D13 at once in low level of RB2 end output, anode and the D14 of D13 connect together, thereby close reset circuit, make it not have during operation complex signal and produce.RB2 should be high resistant or high level to open reset circuit at ordinary times.The negative electrode of D12 links to each other with the hand-reset key so that produce reset signal when pressing this key.

Electronic switch unit 4 is by diode bridge D1-D4, and high countervoltage triode T1, T2 form, its effect be when no owner's off-hook by processor unit 1 at the high or low level of RB3 end output with the connection telephone line or hang up circuit.The input E1 of electronic switch unit 4 should be low level at ordinary times, and at this moment two triode T1, T2 all end.

Telecommunication unit 5 is made up of triode T5, T6 and resistance R 17-R20, is used for the square wave that processor unit 1 sends is delivered on the telephone wire to send prompting sound.

Voltage regulation unit 6 is by triode T3, T4, voltage stabilizing didoe DZ, and diode D16-D19, rechargeable battery VB, capacitor C 1, C2, formations such as resistance R 9-R13 are used for the power supply when processor unit 1 work and keep the power supply that data are not lost in the processor piece at ordinary times.This circuit be when connecting by electronic switch unit 4 when diode D19 or owner's off-hook through diode D18, make triode T3, the T4 conducting of power supply branch road, thereby give rechargeable battery VB charging and power to processor.The value of current-limiting resistance R9 should guarantee to have enough electric currents to give battery VB charging and processor work, the simultaneously unlikely again work that divides to walk too much current affects telephone set from telephone wire.Triode T3, T4 end at ordinary times, do not extract electric current from telephone wire, but keep storage in the processor by rechargeable battery VB.

Off-hook detection unit 7 is made up of triode T7-T9 and resistance R 21-R24, is used to judge whether off-hook and give processor unit 1 off hook signal of owner.Owner's off-hook not at ordinary times, triode T9 ends, and the output high level is to the RB5 of processor unit 1; If owner's off-hook, triode T9 conducting, output low level is to processor unit 1.

Power amplifier unit 8 is by triode T11, resistance R 31, R32, and capacitor C 12, formations such as buzzer BZ, the simulation ringing pulse that is used for that processor unit 1 is sent here amplifies and sounds by buzzer BZ, listens with the prompting owner and answers the call.

Wireless energy control units 9 is made up of high frequency transmission circuit, high frequency receiving circuit and power control circuit.High frequency transmission circuit is the inductance connecting three point type of being made up of triode T12, resistance, electric capacity and inductance, is tuned at about 300MHZ.Remote control mode is respectively the square wave of 2KHZ and 3KHZ for passage 1 and passage 2.The remote control mode that radiating circuit is sent processor unit 1 here is launched by antenna after the high-frequency signal modulation.The high frequency demodulation part of high frequency receiving circuit for being made of triode T13, resistance, electric capacity and inductance, the decoding part of formations such as the shaping of formations such as triode T14, amplifier section and phase-locked loop LM567 is grouped into.When the high-frequency solution demodulation circuit is tuned at the frequency identical with radiating circuit, just can be at the collector electrode output 2KHZ of T13 or the square wave of 3KHZ, through the shaping of T14, the input that phase-locked decoder LM567 is delivered in amplification, the LM567 of respective channel just has a low level decoding output.LM567 is output as high level at ordinary times.Power control part divides for the flip and flop generator that is made of triode T15, T16 etc., and controllable silicon and diode polarity transformation circuits are formed.Decoding output makes the trigger upset, export high or low level to controllable silicon, thereby the break-make of control apparatus power supply is finished final remote control actions.This unit is owing to adopt wireless transmission and reception, thereby makes the remote telephone that links to each other with telephone wire well-separated with the power control circuit part that links to each other with civil power with the main body of filtering device, and then guarantees that civil power has no effect to telephone network.The high frequency that has only provided a passage in the wireless energy control units 9 of Fig. 2 receives and the power control part branch.Binary channels only need increase corresponding phase-locked decoding, flip and flop generator, and the controllable silicon part is just passable.And the high-frequency solution mediation is amplified, and shaping unit needn't increase.

The course of work of this device: the user puts through phone in the strange land, and ring detection and reset unit 3 send reset signal to processor unit 1 after receiving ring at once, gives processor unit 1 after the bell signal shaping simultaneously.Processor unit 1 is started working after receiving reset signal, and bell signal is counted.If be in remote control and filtering state, then processor unit 1 sends high level to open electronic switch at RB 3 ends at once, connects telephone line, and sends prompting sound through telecommunication unit 5, and at this moment prompting the other side can key in the number of remote control password or owner approval.Double-tone receiving element 2 receives the number of key entry and gives processor unit 1 with it, if what key in is the remote control password, then processor sends prompting sound to confirm through telecommunication unit 5, the user just can then key in the channel number of remote control, if legal then processor output remote control mode is to high frequency transmission circuit, and the user who sends the prompting sound announcement, put low level at output RB3 afterwards, turn-off electronic switch to hang up the telephone.Meanwhile, the receiving circuit in the wireless energy control units 9 receives the remote control mode of sending, and delivers to power control circuit, controls being switched on or switched off of corresponding electric appliance power supply.If what begin typing is the number that owner approves, then processor unit 1 sends ringing tone to telecommunication unit 5 and power amplifier unit 8, listens with the prompting owner and answers the call.If owner's off-hook send a signal to give processor unit 1 after then off-hook detection unit 7 detects, just stop ringing tone, in RB3 end output low level, turn-off electronic switch, hang up the telephone, log off.If the number of the owner who begins typing approval is wrong, or password is wrong or do not key in number, then processor also logs off.If be in a remote state, then processor receives only guidance command, and only just receives guidance command under the other side puts through the situation of dereliction people off-hook after the phone ringing five times; Otherwise do not responded, owner normally listens and answers the call.Specifically, put through phone the user, behind ring detection and the reset unit 3 resetting processor unit 1, begin bell signal is counted, if be in a remote state, owner's off-hook within five rings send a signal to give processor unit 1 after then off-hook detection unit 7 detects, processor just logs off.If unmanned off-hook after the ring five times, then processor is connected telephone line at RB3 end output high level to open electronic switch, and sends prompting sound through telecommunication unit 5, prompting the other side key feeding cipher, and its process is identical during with remote control and filtering state, no longer carefully states.

Press reset key K1, ring and reset unit 3 are also exported a reset signal, and processor unit 1 is started working, and enter a kind of setting and test status.This device has solidified a remote control password in processor unit 1, the user can directly use this password to carry out straighforward operation, and the user also can utilize the keyboard on the telephone set that the remote control password is set voluntarily at setting and test status.After being provided with new password, just can not carry out straighforward operation with original password.Certainly behind the newly-installed password of cancellation, still can use original password.The number of owner's approval also arbitrarily is provided with by user oneself, is generally 4.Be provided with and test status, the user can also operate with the password of intrinsic password or setting or the number of owner's approval at this machine rather than in the strange land, and checking the password of oneself setting, owner approves whether number and whole device be working properly.

Claims (2)

1. remote telephone and filtering device, it is by processor unit (1), double-tone receiving element (2), ring detection and reset unit (3), electronic switch unit (4), telecommunication unit (5), voltage regulation unit (6), off-hook detection unit (7), power amplifier unit (8) and wireless energy control units (9) are formed, its architectural feature be telephone wire respectively with double-tone receiving element (2), electronic switch unit (4), off-hook detection unit (7) links to each other, the output A0-A3 of double-tone receiving element (2) links the input RA0-RA3 of processor unit (1), the output A4 of double-tone receiving element (2) links the input RB0 of processor unit (1), ring detection and reset unit (3) are by triode T10, resistance R 2-R8, diode D11-D15, capacitor C 3, C4 constitutes, the negative electrode B1 of D14 and the collector electrode of T10, the input RB1 of processor unit (1) links to each other, the negative electrode B3 of D13 links to each other with the output RB2 of processor unit (1), the negative electrode of D12 links to each other with hand-reset key K1, the end B2 of R8 links to each other with the reset terminal RST of processor unit (1), the E2 of electronic switch unit (4) links the F1 of telecommunication unit (5) and the anode G1 of the middle D19 of voltage regulation unit (6) respectively, the E1 of electronic switch unit (4) links to each other with the output RB3 of processor unit (1), the E3 of electronic switch unit (4) links to each other with the B4 of ring detection with reset unit (3) with the G4 of voltage regulation unit (6) respectively, the input F2 of telecommunication unit (5) links to each other with the J of power amplifier unit (8) and the output RB4 of processor unit (1), voltage regulation unit (6) is by triode T3, T4, resistance R 9-R13, diode D16-D19, DZ, capacitor C 1, C2 constitutes, D18, the negative electrode of D19 links to each other by the base stage of resistance R 12 and T4, one end H1 of the anode G3 of D18 and off-hook detection unit (7) links to each other, the output G2 of voltage regulation unit (6) links the power end VDD of processor unit (1), the H2 of off-hook detection unit (7) links the input RB5 of processor unit (1), wireless energy control units (9) is by high frequency transmission circuit, high frequency receiving circuit and power control circuit are formed, and the input M of wireless energy control units (9) links to each other with the output RB6 of processor unit (1).

2. remote telephone according to claim 1 and filtering device is characterized in that described processor unit (1) is the very low PIC16C56 single-chip microcomputer of power consumption.

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