CN2289273Y - Doorbell alarm device - Google Patents

Abstract

The utility model relates to a door bell alarm device which is a domestic electronic alarm device which can also be used as the door bell, comprising a door bell signal generating component 12, a power amplifying component 9, an alarm signal generating component 10, a signal detection component 4 which is composed of a magnet control switch 1, a controlled silicon 2, an inverter 3 and a triode electronic switch 5 and a cipher control component. The utility model can be used as the door bell as well as the electronic alarm. The alarm is relieved by inputting cipher by two push buttons. The utility model also has the performance that the door bell alarm device is locked self when false cipher is input, and the users can encode the cipher by self.

Description

Doorbell alarm device

The utility model relates to a kind of anti-theft device of family expenses, a kind of electronic alarm of double as doorbell.

Existing electronic door bell utilizes music-integrating block, can send melodious ding-dong sound, but can't use as alarm.

The purpose of this utility model be propose a kind of can as doorbell, again can be as the device of alarm.

This Doorbell alarm device comprises the doorbell signal generator part, power amplifier unit, alerting signal production part, signal detecting part and cipher control parts.

Accompanying drawing 1 is doorbell signal generator part, power amplifier unit, the alerting signal production part of this Doorbell alarm device, the schematic diagram of signal detecting part;

Accompanying drawing 2 is the schematic diagram of cipher control parts:

Accompanying drawing 3 is the another kind of structure principle chart of signal detecting part;

Accompanying drawing 4 is the structural drawing of piezoelectricity buzzer.

As shown in Figure 1, this Doorbell alarm device comprises the doorbell signal generator part of being made up of bell button 15, music-integrating block 13 12, the power amplifier unit of forming by complex pipe amplifier 8, step-up transformer 7 and piezoelectric buzzer 69, the alerting signal production part of forming by ultralow-frequency oscillator 14, audio frequency oscillator 11 10.The output terminal of doorbell signal generator part 12 is received the input end of power amplifier unit 9, and the output terminal of alerting signal production part 10 links to each other with the input end of power amplifier unit 9.This Doorbell alarm device also comprises the signal detecting part of being made up of magnetic switch 1, controllable silicon 2, phase inverter 3, triode electronic switch 54, and the cipher control parts of being made up of decade count frequency division integrated package 18, scrambler 25, Sheffer stroke gate control assembly 21 shown in Figure 2.The power end of alerting signal production part 10 links to each other with power supply by the triode electronic switch 5 in the signal detecting part, the output terminal of cipher control parts (i.e. P1 socket among the figure) is received the base stage of output triode T2 by an isolating diode D1, the control of the controllable silicon 2 in the collector of output triode T2 and the signal detecting part extremely links to each other, and links to each other with the input end of phase inverter 3 by an isolating diode D3.As shown in Figure 2, the scrambler 25 in the cipher control parts comprises two group coding switch SW 1, SW2, and two load button S1, S2 reach by two triode T ₁₄, T ₁₅The trigger flip-flop of forming 24.Isolating diode D is passed through in the corresponding back in parallel, upper end, pass of respectively splitting in two group coding switch SW 1, interior each switch of SW2 ₅, D ₆, D ₇, D ₈Receive the preceding level Four terminal count output Q of decade count frequency division integrated package 18 respectively ₀, Q ₁, Q ₂, Q ₃On, (four switches are arranged in every group coding switch), the lower end of each switch is received two triode T in the trigger flip-flop 24 respectively after the parallel connection separately in code switch SW1, the SW2 ₁₄, T ₁₅Connect power end, the upper end of two load button S1, S2 respectively with two triode T of trigger flip-flop 24 ₁₄, T ₁₅Collector link to each other.Described Sheffer stroke gate controller 21 comprises two Sheffer stroke gate IC1, IC2, controllable silicon 19 and reset button S3.The output terminal of one of them Sheffer stroke gate IC1 is received on the trigger end CLK of decade count frequency division integrated package 18, the negative electrode of the controllable silicon 2 in its input end and the signal detecting part 4 links to each other in (among the figure by the P2 socket), and its another input end links to each other with the lower end of two load button S1, S2.Two input ends of another Sheffer stroke gate IC2 link to each other with the lower end of two load button S1, S2 simultaneously, its output terminal is received the control of controllable silicon 19 and is extremely gone up ( diode 20,22 also plays buffer action), the negative electrode of controllable silicon 19 connects the reset terminal of decade count frequency division integrated package 18, and reset button S3 is connected between the reset terminal RSI and positive source of decade count frequency division integrated package 18.The level V terminal count output Q4 of decade count frequency division integrated package 18 is the output terminal of cipher control parts, receives on the socket P1.

The principle of work of this Doorbell alarm device is as follows:

1, doorbell function: press bell button 15, music-integrating block gets electric, sends the doorbell music signal, amplifies piezoelectric buzzer 6 sounding through complex pipe amplifier 8.Capacitor C 10 is the time that is used to guarantee the doorbell sounding.When bell button 15 was pressed, power supply charged to C10, and button is discharged to music-integrating block by C10 after decontroling, and made its continuity time enough send the doorbell signal.

2, warning function: magnetic switch 1 is installed on the doorframe, and the corresponding site on the door is loaded onto magnet.Click reset key S3 in front of the door earlier in the pass, decade count frequency division integrated package 18 is resetted, its Q4 end is in electronegative potential, the Q0 end is in noble potential.Shut the door, magnetic switch 1 is subjected to attraction and closure, triode T1 ends, the control Very Low Potential of controllable silicon 2 ends, and its negative electrode also is an electronegative potential, after phase inverter 3 secondaries are anti-phase, triode electronic switch 5 is ended, alerting signal production part 10 not with power connection, no signal output is in alert status.After door was opened, magnetic switch 1 disconnected triode T1 conducting, the controllable silicon 2 control utmost points transfer noble potential to, thereby conducting, its negative electrode also just transfer noble potential to, after capacitor C 1 charging time-delay, the input end of phase inverter 3 transfers noble potential to, twice anti-phase output noble potential makes 5 conductings of triode electronic switch, alerting signal production part 10, send alerting signal, again through 8 amplifications of complex pipe amplifier, piezoelectric buzzer 6 sounding.

3, remove warning function: after door is opened, do not send as yet in the time delay of chimes of doom, as importing correct password with load button S1, S2, make the output terminal Q4 of decade count frequency division integrated package 18 transfer noble potential to, make the base stage of triode T2 transfer noble potential to by diode D1, the T2 conducting, make the control utmost point of controllable silicon 2 transfer electronegative potential to, simultaneously also make the input end of phase inverter 3 also become electronegative potential, just no longer send chimes of doom, removed warning.

4, encoding function: the coding of removing the password of reporting to the police is realized by two group coding switch SW 1, SW2, first and third liang of switch closure among the SW1 shown in Fig. 2, second, four liang of switch closure among the SW2, the password of this moment is 1212, S1, S2 successively promptly touch the button, S1, S2 can change the output terminal Q4 of decade count frequency division integrated package 18 into high level output.This is that back Q0 transfers high level to because counting frequency division integrated package 18 resets, when pressing S1, the input end of IC1 obtains a high level pulse, because of another input end and P2 join, be noble potential, just export a trigger pulse (negative pulse) and give counting frequency division integrated package 18, make its output terminal Q1 transfer high level to, Q0 transfers low level to.At this moment, the upper end of S2 transfers to electricity, and when pressing S2, the IC1 input end positive pulse of getting back makes it export a trigger pulse.And the like, up to Q ₄Transfer high level to.If the order of S1, S2 button pushes the wrong, what the IC1 input end obtained is a negative pulse, the IC1 no-output, and two input ends of IC2 also obtain this negative triggering pulse simultaneously simultaneously, export a positive pulse, make controllable silicon 19 conductings, export the reset terminal of a positive signal, it is resetted again, realized the error code self-locking to counting frequency division integrated package 18.The structure of this scrambler uses two button S1, S2 promptly to realize the password input of four figures.If in two code switchs the more switches number is arranged, as 6,8, the figure place of then encoding also can be increased to 6,8.When the effect of trigger flip-flop 24 was output noble potential that guarantees among two button S1, the S2, another necessarily exported electronegative potential, to guarantee the correctness of password input.When for example S1 exported noble potential, T14 was in conducting state, and just near zero, vice versa for the last terminal potential of S2.

As shown in Figure 2, the first order terminal count output Q0 of the decade count frequency division integrated package 18 of this Doorbell alarm device and isolating diode D5 can pass through by two triode T ₁₂, T ₁₃The electronic switch assembly of forming 23 links to each other, and the input end of this electronic switch assembly links to each other with the negative electrode of controllable silicon 2 in the signal detecting part 4 again.Like this, have only when door is opened, during controllable silicon 2 conductings, electronic switch assembly 23 conductings, button S1 could export noble potential, it is more reliable and more stable to work, and required power consumption is littler when making alert status.17 are the indication luminotron of reporting to the police among the figure, and triode 16 conducting when controllable silicon 2 conductings makes light emitting diode 17 luminous, and the indication alarm is in alarm condition.

As shown in Figure 3, the output terminal of the phase inverter 3 in the signal detecting part 4 of this Doorbell alarm device can also be received on the isolating diode D1 of cipher control parts output terminal by a resistance 31, two 33,34 and diodes 35 of negater, and the input end of above-mentioned negater 33 is again by electric capacity 32 ground connection.Like this, can utilize the charge and discharge process of electric capacity 32, make alarm periodically intermittently send chimes of doom: after opening the door, T1 conducting → controllable silicon 2 conductings → C1 charging time-delay → phase inverter 3 output terminals transfer positive potential → T5, T6 conducting to, send out chimes of doom → while electric capacity 32 by resistance after 31 charging time-delay a period of times negater 33 input ends transfer noble potential → export noble potential → diodes 35 through twice anti-phase back phase inverter 34 to export noble potential → triode T2 conducting → controllable silicons 2 and end to, chimes of doom stops.Electric capacity 32 discharges then, phase inverter 33 input ends transfer electronegative potential to, 34 output electronegative potentials, T2 ends again, controllable silicon 2 conducting again, C1 recharges the back and sends out chimes of doom.So go round and begin again, can send chimes of doom cyclical intermission, have only when closing to the doorstep or after importing decoded signal chimes of doom is stopped paying out.The very fast usefulness of speed when the diode D9 among the figure discharges for making capacitor 32.

As shown in Figure 4, the piezoelectricity buzzer of this Doorbell alarm device can comprise cavity 30, bonnet 26 and piezoelectricity singing piece 27, piezoelectricity singing piece is between cavity and the bonnet, faces the reflecting surface 28 that piezoelectricity singing piece has an arc on the cavity, and there is a sound transmission aperture 29 at its center.Such structure, sound output volume after the reflection of the reflecting surface on the cavity can strengthen many.

This Doorbell alarm device adopts the 9V laminated cell to make power supply, and static power consumption is less than 20 μ A, and power consumption is less than 25mA when dynamically reporting to the police, and the loudness of chimes of doom can reach more than 100 decibels.

Claims (4)

1, a kind of Doorbell alarm device, comprise by bell button (15), the doorbell signal generator part (12) that music-integrating block (13) is formed, by complex pipe amplifier (8), the power amplifier unit (9) that step-up transformer (7) and piezoelectric buzzer (6) are formed, by ultralow-frequency oscillator (14), the alerting signal production part (10) that audio frequency oscillator (11) is formed, the output terminal of doorbell signal generator part (12) is received the input end of power amplifier unit (9), the output terminal of alerting signal production part (10) links to each other with the input end of power amplifier unit (9), it is characterized in that it also comprises by magnetic switch (1), controllable silicon (2), phase inverter (3), the signal detecting part (4) that triode electronic switch (5) is formed and by decade count frequency division integrated package (18), the cipher control parts that scrambler (25) and Sheffer stroke gate controller (21) are formed, the power end of alerting signal production part (10) links to each other with power supply by the triode electronic switch (5) in the signal detecting part, the output terminal of cipher control parts is received the base stage of an output triode (T2) by an isolating diode (D1), the control of the controllable silicon (2) in the collector of this output triode and the signal detecting part extremely links to each other, and link to each other with the input end of phase inverter (3) by an isolating diode (D3), described scrambler (25) comprises two group coding switch (SW1, SW2), two load button (S1, S2) reach by two triode (T ₁₄, T ₁₅) trigger flip-flop (24) formed, in the described two group coding switches (SW1, SW2) in each switch corresponding respectively splitting close back in parallel, upper end by isolating diode (D ₅, D ₆, D ₇, D ₈) receive the preceding level Four terminal count output of decade count frequency division integrated package (18), (Q respectively ₀, Q ₁, Q ₂Q ₃), the lower end of each switch is received two triode (T in the trigger flip-flop (24) respectively after the parallel connection separately in code switch SW1, the SW2 ₁₄, T ₁₅) connect power end, the upper end of two load buttons (S1, S2) respectively with two triode (T of trigger flip-flop (24) ₁₄, T ₁₅) collector link to each other, described Sheffer stroke gate controller (21) comprises two Sheffer stroke gate (IC1, IC2), controllable silicon (19) and reset button (S3), the output terminal of one of them Sheffer stroke gate (IC1) is received the trigger end (CLK) of decade count frequency division integrated package (18), the negative electrode of the controllable silicon (2) in its input end and the signal detecting part (4) links to each other, its another input end and two load button (S1, S2) lower end links to each other, two input ends of another Sheffer stroke gate (IC2) simultaneously with two load button (S1, S2) lower end links to each other, its output terminal is received the control utmost point of controllable silicon (19), the negative electrode of controllable silicon (19) connects the reset terminal of decade count frequency division integrated package (18), reset button (S3) is connected between the reset terminal and positive source of decade count frequency division integrated package (18), and the level V terminal count output (Q4) of decade count frequency division integrated package (18) is the output terminal of cipher control parts.

2, Doorbell alarm device as claimed in claim 1 is characterized in that the first order terminal count output (Q0) of described decade count frequency division integrated package (18) and isolating diode (D5) pass through by two triode (T ₁₂, T ₁₃) electronic switch assembly (23) formed links to each other, the negative electrode of the controllable silicon (2) in the input end of this electronic switch assembly and the signal detecting part (4) links to each other.

3, door as claimed in claim 1 or 2 official seal alarm is characterized in that the output terminal of described phase inverter (3) receives the isolation diode (D of cipher control parts output terminal by resistance (31), two negaters (33), (34) and a diode (35) ₁) on, the input end of above-mentioned negater (33) is by an electric capacity (32) ground connection.

4, Doorbell alarm device as claimed in claim 1 or 2 is characterized in that described piezoelectric buzzer comprises cavity (30), bonnet (26) and piezoelectricity singing piece (27).Piezoelectricity singing piece is between cavity and the bonnet, and facing piezoelectricity singing piece on the cavity has a curved reflecting surface (28), and there is a sound transmission aperture (29) at its center.

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