CN87208460U

CN87208460U - Electronic alarm for remote control and monitor

Info

Publication number: CN87208460U
Application number: CN 87208460
Authority: CN
Inventors: 郭俊
Original assignee: BAOJI MUNICIPAL SUPPLY-AND-MARKETING MACHINERY FACTORY
Current assignee: BAOJI MUNICIPAL SUPPLY-AND-MARKETING MACHINERY FACTORY
Priority date: 1987-05-24
Filing date: 1987-05-24
Publication date: 1988-07-13

Abstract

The utility model relates to an electronic alarm for remote control and monitor, which adopts a new alarm combined by a double power supply, namely a trigger power supply, and a buzzer power supply. The utility model is composed of a buzzer portion, the buzzer power supply, a sustained alarm circuit and a trigger circuit, the triggering and the monitoring are realized by a coaxial cable wire, so the utility model has the advantages of safety, high sensitivity, small energy consumption and low cost.

Description

Electronic alarm for remote control and monitor

The utility model belongs to electronic applications.

Prior art in the utility model technical field has: 1, directly connects, disconnects alarm, realize although this alarm is easy, exist to connect namely and ring, and the end that covers that breaks and namely stop, thereby can not continue afterwards to report to the police in triggering; 2, continue alarm after triggering, although just this alarm can continue to report to the police, exist as in advance with the external connection short circuit, alarm is just automatically malfunctioning after triggering.

Design objective of the present utility model: at the problem of above-mentioned existence, design a kind of safe and reliablely, highly sensitive, it is little to consume energy, and cost is low, and applied widely is remote, the monitoring electronic alarm.

Design of the present utility model realizes by following scheme:

A kind of by information ring part, information ring electric current continue that alarm and circuits for triggering form remote, monitor electronic alarm, it is characterized in that: the positive pole of described information ring power supply E1 and negative pole respectively with lasting warning circuit in the emitter stage of triode BG2 and BG3 link; Described circuits for triggering are connected with on-off circuit by connector by the sensing clock circuit and form, its sensing clock circuit is by sensing element K1, K2 and triggering power supply E2 form, and the setting and the value one that trigger power supply E2 are in order to solve external control line short circuit alarm, the 2nd, in order to guarantee that alarm triggers reliably and external control line has effective control distance far away, on-off circuit is take diode D1 as main body, R1 and R2 be D1 current-limiting resistance and with resistance R 3 and R4 blocking-up A when triggering the control line short circuit or opening circuit, 2 of B pass through other loop conducting.And current-limiting resistance R5 and voltage-stabiliser tube D2 connect respectively the composition overvoltage crowbar with the end of current-limiting resistance R2 and R1.When inserting high voltage, plays external control line the effect of step-down current-limiting protection alarm when running into.Sensing element K1 and K2 and triggering power supply E2 coupled in series, the end of its sensing element K2 connects with the end of sensing element K1, and the other end connects with the negative pole that triggers power supply E2; Current-limiting resistance R5 and voltage-stabiliser tube D2 coupled in series, current-limiting resistance R1 and R2 are positioned at two ends and the coupled in series of two pipe D1, and the end of its current-limiting resistance R1 and R2 connects with the negative pole of Zener diode D2 and the end of current-limiting resistance R5 respectively; One end of resistance R 3 connects with the base stage of triode BG1 in the lasting warning circuit, and the other end connects with the negative pole of diode D1, and an end of resistance R 4 connects with the emitter stage of triode BG1, and the other end connects with the positive pole of diode D1; The positive pole of information ring power supply E1 connects with the positive pole of diode D1 by resistance R 6 and R3; And the negative pole of information ring power supply E1 connects with the positive pole of diode D1 by resistance R 4; Sensing element in the sensing clock circuit can be arranged on any position of antitheft thing and the protection thing on, and sensing element can connect to realize the remote monitor warning with circuit in the alarm by coaxial wire; The setting of triode BG1, BG2 and BG3 is to continue warning circuit in order to guarantee alarm to be triggered rear; K is the gauge tap of alarm information ring power supply E1, control alarm use with do not use.

The principle of work of remote monitor electronic alarm is: in normal condition, trigger circuit triggers power supply E2 connects during point-to-point transmission through R1, D1, R2 conducting A, B, and this moment, BG1 ended because of no forward bias, thus BG2 and all not conductings of BG3, so alarm is not worked; When external connection opens circuit or short circuit and sensing element K1, K2 action, because voltage decompression in the trigger circuit and D1 ends, thus 2 of A, B because of oppositely being connected in D1 so be in and open circuit, this moment is because B1 is in the forward bias conducting, BG2 and BG3 be just conducting immediately also, and alarm is reported to the police rapidly.Again because the conducting of BG3 provides the biasing path for BG2, the BG1 of this moment just is equivalent to be fallen by short circuit, in case so trigger alarm device, both made and reclosed again A, B 2 points, alarm can stop alarm yet, after only turning off the gauge tap of information ring power supply E1 of alarm, alarm could stop alarm.

The utility model compared with prior art, it has safe and reliable, the characteristics that highly sensitive and remote monitor is reported to the police, it also has the advantage that power consumption is little, cost is low, applied widely simultaneously.

Description of drawings:

Fig. 1 is a block diagram remote, the monitoring electronic alarm.

Fig. 2 is a schematic diagram remote, the monitoring electronic alarm.

Embodiment:

Fig. 2 is a kind of embodiment remote, the monitoring electronic alarm.

At a distance, the enforcement of monitoring electronic alarm: at first draw printed substrate according to schematic diagram remote, the monitoring electronic alarm shown in Figure 2; after printed substrate made; weld in the circuit board with the method for soldering according to the electronic original part described in the figure; again sensing element K1 and K2 are contained on the pick-proof position or protection thing of antitheft thing, such as password, door lock etc. in the storehouse door and window safe door.Pass through then the end connection of connector (5) and sensing element with an end of cable, the other end connects with circuit in the alarm with connector equally and the other end of sensing element connects with the negative pole that triggers power supply E2, and its positive pole that triggers power supply connects with circuit in the alarm by connector can consist of at a distance, monitor electronic alarm.

Claims

1, a kind of remote, monitoring electronic alarm that is made up of information ring part, information ring voltage, lasting warning circuit and circuits for triggering is characterized in that:

A) 2. described lasting warning circuit is by resistance R 6, R7, R8, R9, R10 and triode BG1, BG2, BG3 forms, the end of its R6 and the emitter of BG2, the positive pole that one end of resistance R 7 and news are rung power supply E1 connects, the base stage of the other end and BG1 and on-off circuit 6. in the end of R3 be connected, the other end of R7 and R8, the end of R10 and the base stage of BG2 connect, the other end of R8 is connected with the collector of BG1, the other end of R10 is connected with the collector of BG3, the emitter of BG3 then rings part with news, the emitter of BG1, on-off circuit 6. in the end of R4 and the negative pole that news are rung power supply E1 connect, the base stage of BG3 is connected with the end of R9, and the other end of R9 then is connected with collector and the news sound part of BG2;

B) 6. 5. 4. 3. described trigger circuit connected with on-off circuit by connector by the sensing trigger circuit and form; 4. the sensing trigger circuit are to be connected in series by lead by sensing element K1, K2 and triggering power supply E2, and the end of K2 is connected with the end of K1, and the other end is connected with the negative pole of E2, and the other end of K1 is connected with extension bar spare CK1 respectively with the positive pole of E2; 6. on-off circuit is made up of resistance R 1, R2, R3, R4, R5 and D1, D2, the end of its R5 is connected with the end of extension bar spare CK2 and R2, the other end of R5 is connected with the positive pole of D2, the negative pole of D2 then is connected with the end of extension bar spare CK2 and R1, the other end of R1 is connected with the end of the positive pole of D1 and R4, and the negative pole of D1 then is connected with the other end of R2 and the end of R3.

2, remote, monitoring electronic alarm according to claim 1; it is characterized in that the sensing element that sensing triggers in the power circuit is arranged on any position of antitheft thing and the protection thing, its sensing element connects by coaxial wire with circuit in the alarm to be realized.