CN2303409Y - Automatic alarming for telling user on-hook for telephone set - Google Patents

Abstract

The utility model discloses an automatic telephone hanging-up alarming device which is combined of a voice detecting circuit, a time-delay and reset circuit, an alarm circuit and an automatic hanging-up circuit. The device can automatically alarm when the telephone is improperly hung up and automatically hang up the telephone when the alarm is invalid. The utility model can effectively avoid troubles brought by telephone misapplication for users and has the advantages of small size, low power consumption, compact structure, etc. While in use, the device can be directly arranged in the telephone without power supply and be widely used in public and family telephones.

Description

The telephone automatic alarm hand-up device

The utility model relates to a kind of telephone set warning device, particularly a kind of automatic warning and automatic hand-up device when failing to hang up properly after the phone use.

Phone is the communication tool that often uses in people's daily life, work, the study, and it can be increased work efficiency, convenient promptly the transmission and exchange of information, but improper use also can bring some troubles to people.Often incidental as: fail to hang up after usefulness because of inadvertent makes phone, cause outside line not come in, delay thing, the user also can not suffer some unnecessary economic losses because of phone hangs up properly sometimes.Present domestic what good solution that there is no, way is by telecommunication bureau user telephone line to be cut off usually, loop wheel machine makes troubles for again user's use by force.The area that has still takes to add up the method for charging according to time, distance at present, so that often causes user's dispute.Publish Feng Jin on 95 years " household electrical appliance " the 7th phases and write one piece of article, be entitled as " self-control telephone set on-hook reminiscences ", it be mainly the user solve on-hook improperly in the certain hour (25 minutes) warning is provided, but this device is a kind of alarm set, when prompting is invalid, still can't tackle the problem at its root.In addition, realize that this circuit need add the 220V AC power, and in running order for a long time, make troubles for the realization above-mentioned functions.

The purpose of this utility model be to provide a kind of when the telephone set on-hook not at that time, not only can report to the police but can automatic hand-up and on-hook after do not influence the telephone automatic alarm and the hand-up device of normal reception or dial feature.

Realize that the technical scheme that the utility model adopted is as follows: the telephone automatic alarm hand-up device, it is characterized in that it is to be formed by speech testing circuit, time-delay and reset circuit, warning circuit and automatic hand-up combination of circuits, wherein time-delay and reset circuit are to be made of biasing circuit, CC4060 integrated circuit and frequency adjustable oscillating circuit, the answer the call PNP transistor T of switching circuit in the machine of the input of speech testing circuit ₃Collector electrode, be connected on the clear terminal that resets of CC4060 integrated circuit behind the biasing circuit of the output of speech testing circuit in time-delay and reset circuit, promptly on 12 pin, 9 pin on the CC4060 integrated circuit, 10 pin and 11 pin connect tunable capacitor and two resistance of frequency adjustable oscillating circuit respectively, two output Q12 of CC4060 integrated circuit and Q13 be the input of phone taking alarm and the input of automatic hand-up circuit respectively, the output of the automatic hand-up circuit NPN transistor T in the machine switching circuit that answers the call ₄Base stage, warning circuit comprises a control switch and a slice musical film, its alarm signal is to be sent by receiver by the telephone set internal circuit, and the input of warning circuit is joined by the output Q12 of CC4060 integrated circuit in an emitter follower and time-delay and the reset circuit.Entire circuit of the present utility model is respectively an outconnector from telephone switch below control circuit and phone internal circuit, under the receiver off-book state, line voltage distribution is about 5V, power supply as this device, the phone testing circuit is that the audio signal that conversation in the circuit time has is carried out detection, when voice signal is arranged, and the magnitude of voltage that detection output is certain, during no voice, detection is output as zero.When detection is output as zero, begin to start the delay circuit work in time-delay and the reset circuit, its delay time is adjustable, between time delay, if detecting circuit has input (voice signal is arranged), then starts reset circuit, and delay circuit is resetted.When behind the time-delay official hour, delay circuit is promptly exported a high level, and the control switch of penetrating with the rear drive warning circuit through an emitter follower moves, and starts warning circuit, reports to the police.During reporting to the police, if detection output (voice signal is arranged) is arranged again, just delay circuit resets, and cancellation is reported to the police; If the warning time limit through regulation does not still have voice signal, then this device will be realized on-hook by the automatic hand-up circuit.

The utility model compared with prior art, its remarkable advantage is: (1) this device not only realized not at that time automatic warning of on-hook, also realized at the automatic hand-up of reporting to the police when invalid; Promptly solved because of on-hook is improper and make outside line not come in to delay the normal information transmission, avoided again because of improper unnecessary economic loss of bringing to the user of on-hook and the dispute that causes thus; (2) the circuit volume of this device is little, low in energy consumption, does not influence the speech quality of normal talking during work, and compact conformation, and employed components and parts are commonplace components, can be directly installed on telephone set inside during use, do not need additional power source.

Concrete structure of the present utility model is provided by the following drawings and embodiment.

Fig. 1 is the electric functional-block diagram according to telephone automatic alarm hand-up device described in the utility model.

Fig. 2 is the electrical connection schematic diagram of telephone automatic alarm hand-up device.

With reference to the accompanying drawings the utility model is done below and described in further detail.

Referring to Fig. 1, according to the telephone automatic alarm hand-up device that the utility model is made, it is made up of speech testing circuit 1, time-delay and reset circuit 2, warning circuit 3 and automatic hand-up circuit 4.Referring to Fig. 2, the audio signal peak-to-peak value in the circuit when it passes through speech testing circuit 1, is coupled by C1 earlier about 6V, and the filtering through D1, D2 rectification and C2 forms a high level again.Time-delay and reset circuit 2 are by ten tetrad serial frequency divisions, counter CC4060 constitutes, in addition by two resistance R 4, R5 and tunable capacitor C3 constitute oscillating circuit, regulate C3 and can change the frequency of oscillation change of delay time (promptly corresponding to), the zero clearing wall RST that resets of this circuit is by 1 control of speech testing circuit, the output signal of its output Q13 is two frequency divisions of Q12, Q12 is used to control warning circuit 3, the high level of Q12 output makes control switch (IC2:A) closure in the warning circuit 3 through emitter follower T1, musical film (IC3) energising work, send alarm signal, this signal enters the phone internal circuit, send by receiver, Q13 is used to control automatic hand-up circuit 4, automatic hand-up circuit 4 is at off hook state, the K switch closure, this moment, voltage between lines only had about 5V, through R7, after the R8 dividing potential drop, the base voltage of NPN three power pipe T2 is less than 0.2V, T2 ends, and makes NPN triode T4 base voltage lifting (tube voltage drop 0.7) in the telephone switch circuit 5, the T4 conducting, PNP triode T3 base voltage is descended, the T3 conducting makes the phone internal circuit connect operate as normal.When the output of the Q13 in time-delay and the reset circuit 2 uprises level, C4 in the automatic hand-up circuit 4 is recharged, make the T2 conducting simultaneously, the base stage that makes the T4 in the telephone switch circuit 5 is by short circuit (voltage is less than 0.15V), T4 is by making the lifting of T3 base voltage, and T3 ends and cut-out telephone set internal electric source.Time-delay and reset circuit 2 also lose power supply simultaneously, this moment, Q13 output was high resistant, make in the automatic hand-up circuit 4 C4 begin discharge, make T2 keep conducting state to be upgraded to about 50V until outside line voltage, after R7, R8 dividing potential drop, the voltage about T2 base stage generation 2V continues to make the T2 conducting to the voltage of 50V again, T3 ends, and realizes automatic hand-up.When new phone is squeezed into, only need cut-off switch K, make the power down of T2 base stage, T2 ends, T3, T4 conducting, speech channel can be connected, and outside line voltage becomes 5V again, and when K switch was closed again, T2 is no longer conducting also, gets final product normal talking.

In daily employed telephone set, the phone that has carries telephone switch circuit 5, then can directly be connected use with this device, and the not charged words switching circuit 5 that has then when using this device, needs to add above-mentioned telephone switch circuit.

Claims (1)

1. A kind of telephone automatic alarm hand-up device is characterized in that it is to be combined by speech testing circuit [1], time-delay and reset circuit [2], warning circuit [3] and automatic hand-up circuit [4]; Wherein time-delay and reset circuit [2] are by biasing circuit, CC4060 integrated circuit and adjustable oscillating circuit constitute, the answer the call collector electrode of PNP transistor T 3 in the switching circuit [5] of the input of speech testing circuit [1], be connected on clear terminal 12 pin that reset of CC4060 integrated circuit behind the deviator circuit of the output of speech testing circuit [1] in time-delay and reset circuit [2], 9 pin of CC4060 integrated circuit, 10 pin and 11 pin connect tunable capacitor and two resistance of adjustable oscillating circuit respectively, the output Q12 end of CC4060 integrated circuit is by the input of emitter follower circuit taking alarm [3], the answer the call base stage of NPN transistor T4 in the switching circuit [5] of the input of output Q13 termination automatic hand-up circuit [4], the output of automatic hand-up circuit [4]; The alarm signal of warning circuit [3] is sent by receiver through the telephone set internal circuit.

Images