CN2265559Y

CN2265559Y - Automatic transmission alarm device

Info

Publication number: CN2265559Y
Application number: CN 96223447
Authority: CN
Inventors: 张波
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-14
Filing date: 1996-08-14
Publication date: 1997-10-22
Anticipated expiration: 2006-08-14

Abstract

The utility model relates to an automatic transmission alarm device, which is composed of an alarming and testing circuit, an off-hook dialing circuit, and a ring back testing circuit. The utility model is characterized in that two RS triggers is formed by adopting four NAND gate integrated packages; the output signals of the triggers control to be off hook and dial; the utility model can redial when busy tone resists by that a delay circuit is arranged; the ring back testing circuit which is composed of an integrating circuit is arranged, and ring back and reset can be controlled. The utility model has the advantages of simple structure, low cost, and strong versatility.

Description

Automatically summon alarm

The utility model relates to electronic alarm device, more particularly, is a kind of warning device that utilizes telephone network to summon automatically that is made of alarm detection circuit, off-hook dial-up circuit and ring-back testing circuit.

In the prior art, though the existing alarm technique that utilizes telephone network to summon automatically, not only structure is numerous and diverse, cost is too high, and, because busy-back signal disunity in the programme-controlled exchange, if any employing " pout, pout " ring sound, from the employing voice signal, thereby do not have versatility.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, and a kind of simple in structure, low-cost, automatic citation alarm that versatility is good is provided.

The purpose of this utility model is achieved through the following technical solutions.

The utility model is made of alarm detection circuit, off-hook dial-up circuit and ring-back testing circuit, it is characterized in that:

A, described alarm detection circuit adopts two rest-set flip-flops that are made of four Sheffer stroke gate ic chips 1, the trigger end of trigger I (6 pin) signal end a taking alarm wherein, its output terminal (3 pin) connects the trigger end (8 pin) of trigger II, described trigger II, its output terminal (10 pin) a road is to the off-hook dial-up circuit, another road is passed through by T2, C3, R6, delay circuit with the D8 formation, phase inverter 5 and phase inverter 6 export another trigger end of IC1 trigger II (13 pin) in anti-phase ic chip 2, simultaneously in IC2 between phase inverter 5 and the phase inverter 6 (10,13 pin) be provided with by R15, D13, delay trigger circuit with the C9 formation;

Circuit for answering that is made of triode T8, T9 and the dial-up circuit that is made of triode T6, T7 are adopted in b, described off-hook during dialing road, and wherein triode T9 and T7 collector and emitter-base bandgap grading are connected across respectively on phone switch hook K2 and the redial key " R ";

C, described ring-back testing circuit adopt the integrating circuit that is made of R12, D11 and C6 that is arranged between phase inverter 1 in the ic chip 2, the phase inverter 2, its output line (4 pin) a tunnel through triode T1 to another trigger end of trigger I (1 pin), another road capacity cell C3 to the delay circuit.

The utility model is by being provided with the two-stage rest-set flip-flop, trigger end with the previous stage rest-set flip-flop is accepted alerting signal, realize the off-hook dialing of phone by back one-level rest-set flip-flop output signal, and between the output terminal of back one-level RS and its trigger end, delay circuit is set, thereby make back one-level rest-set flip-flop when the other side's phone busy tone, with certain cycle repeated trigger upset, and then this machine of making repeats off-hook, and----on-hook--off-hook dials ..., be switched on until the other side's phone.Compared with the prior art, the utility model is simple in structure, cost is low, energy consumption is low, can be common to any type of program control signal.

Fig. 1 is the utility model governor circuit schematic diagram.

Fig. 2 is the utility model dial-up circuit theory diagrams.

By the following examples, in conjunction with the accompanying drawings, the utility model is made indefiniteness describe.

Embodiment:

Referring to Fig. 1, Fig. 2, complete machine is made of alarm detection circuit, off-hook dial-up circuit and ring-back testing circuit.Wherein the alarm detection circuit adopts two rest-set flip-flops that are made of four Sheffer stroke gate ic chips 1, the trigger end 6 pin signal end a taking alarm (low level is effective) of trigger I wherein, its output terminal 3 pin connect trigger end 8 pin of trigger II, output terminal 10 pin one road of trigger II are to the off-hook dial-up circuit, another road is passed through by T2, C3, R6, and D8, the delay circuit that constitutes, phase inverter 5 and phase inverter 6 export another trigger end 13 pin of IC1 trigger II in anti-phase ic chip 2, simultaneously in IC2 between phase inverter 5 and the phase inverter 6, its 10 pin and 13 pin settings are by R15, D13, delay trigger circuit with the C9 formation.B signal end among Fig. 1 is a reset terminal, is that low level is effective equally.

As shown in the figure, the off-hook dial-up circuit adopts the circuit for answering that is made of triode T8, T9, with the dial-up circuit that is made of triode T6, T7, wherein triode T9 and T7 collector and emitter-base bandgap grading are connected across phone switch hook K2 and redial key " R " last (Fig. 2) respectively; As shown in Figure 2, what the dial-up circuit adopted is in the prior art, the dial-up circuit structure of phone.

The ring-back testing circuit adopts the integrating circuit that is made of R12, D11 and C6 be arranged between phase inverter 1 in the ic chip 2, the phase inverter 2, its output line 4 pin one tunnel through triode T1 to another trigger end 1 pin of trigger I, another road capacity cell C3 to the delay circuit.

In the present embodiment, form the alarm sound oscillatory circuit by reverser in the ic chip 23 and phase inverter 4, its output is connected to the words line by triode T4.In addition, between alerting signal end a and zero line, the delay circuit that is made of inverter ic 3, resistance R 01 and capacitor C 01 is set.

When not having the alert signal, 3 pin of ic chip 1 output high level, 10 pin output low levels, circuitry is in mourns in silence.

When alert takes place, alerting signal end a forms the low level trigger pip at 6 pin of ic chip 1, trigger I upset, trigger II triggers upset thereupon, the 10 pin output high level of IC1, this high level signal makes triode T9 conducting off-hook, the conducting of triode T7 time-delay subsequently, redial key " R " dial-up that is triggered is transferred to the phone sign indicating number that pre-deposits.If the line is busy for called phone, the delay circuit of being made up of T2, R3, D8, R6 and C3 in this machine is through about 40 seconds time-delay, by phase inverter 5 and the phase inverter 6 of IC2, the trigger II of IC1 is overturn once more, the 10 pin output low levels of IC2, triode T9 ends, and realizes on-hook.After this, because the delay circuit that R15, D13 and C9 form makes time-delay about 3 seconds after the on-hook, the phase inverter 6 by IC2 makes the trigger II of IC1 trigger upset again, its 10 pin again then be high level, off-hook dialing once more, so circulation.Be switched on until the other side's phone, have in the phone network and put through backward signalling formation, this signal after C13, T3 amplification exports the phase inverter 1 of IC2 to, via R12, D11 and C6 integration, at the of short duration high level pulse signal of the later stage of backward signalling output, the one tunnel gives capacitor C 3 chargings; Another road makes the trigger I upset of IC1, at its 3 pin output high level, 8 pin of IC1 also are high level simultaneously, at this moment, output terminal 10 pin of trigger II keep high level, and diode D5, D6 are all anti-phase to be ended, and devote oneself to work to the alarm sound oscillatory circuit that the phase inverter 3 and the phase inverter 4 that make by IC2 constitute, and send into the words line by triode T4, the other side's off-hook can be heard caution sound.Because after this time-lag action of T2, D8, R6 and C3, resets circuit, enters waiting status comprehensively.

In the present embodiment, delay circuit IC3, C01 and R01 are for avoiding the misoperation setting of starting shooting.

Alarm probe in the utility model is selected according to different occasions, can be used for fire prevention, antitheft, anti-poisonous, harmful gas etc.

Claims

1, a kind of automatic citation alarm is made of alarm detection circuit, off-hook dial-up circuit and ring-back testing circuit, it is characterized in that:

A, described alarm detection circuit adopts two rest-set flip-flops that are made of four Sheffer stroke gate ic chips 1, the trigger end of trigger I (6 pin) signal end a taking alarm wherein, its output terminal (3 pin) connects the trigger end (8 pin) of trigger II, described its output terminal of trigger II (10 pin) a road is to the off-hook dial-up circuit, another road is passed through by T2, C3, R6, delay circuit with the D8 formation, phase inverter 5 and phase inverter 6 export another trigger end of IC1 trigger II (13 pin) in anti-phase ic chip 2, simultaneously in IC2 between phase inverter 5 and the phase inverter 6 (10,13 pin) be provided with by R15, D13, delay trigger circuit with the C9 formation;

B, described off-hook dial-up circuit adopt circuit for answering that is made of triode T8, T9 and the dial-up circuit that is made of triode T6, T7, and wherein triode T9 and T7 collector and emitter-base bandgap grading are connected across respectively on phone switch hook K2 and the redial key " R ";

2, automatic citation alarm according to claim 1 is characterized in that, forms the alarm sound oscillatory circuit by reverser in the ic chip 23 and phase inverter 4, and its output is connected to the words line by triode T4.

3, automatic citation alarm according to claim 1 is characterized in that, between alerting signal end a and zero line, the delay circuit that is made of inverter ic 3, resistance R 01 and capacitor C 01 is set.