CN2218932Y

CN2218932Y - Household earthquake alarm

Info

Publication number: CN2218932Y
Application number: CN 95230640
Authority: CN
Inventors: 李秀实
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-27
Filing date: 1995-03-27
Publication date: 1996-01-31
Anticipated expiration: 2005-03-27

Abstract

The utility model discloses a household earthquake alarm which is composed of an earthquake wave vibration pickup and an acoustic-optic alarm circuit. The earthquake wave vibration pickup is formed by that a heavy ball which is connected with a spring is arranged in a sleeve cylinder. When earthquake happens, the heavy ball impacts the sleeve cylinder, and a piezoelectric ceramic sheet which is connected with the sleeve cylinder is enabled to output electrical signals which trigger and control sound and light to alarm through the amplification and the shaping of the acoustic-optic alarm circuit. The utility model has no power contacts and is sensitive, reliable, small, portable and suitable for the use of the households.

Description

Earthquake siren for household

The utility model belongs to warning device, is specifically related to a kind of earthquake siren for household.

Earthquake can not accurately be forecast, when still earthquake taking place, generally always begins to be enhanced to gradually violent earthquake by little shake.Though this transit time is very short, vigilance to some extent when little shake takes place is taken measures rapidly, as pierce bed down, the inferior place of desk hides, and can effectively reduce injures and deaths, this is truly feasible by facts have proved.

Existing earthquake Alarm is to adopt the vertical oscillation contact to connect circuit to send warning.Contact just oxidation easily, laying dust etc. are arranged, cause that easily action is malfunctioning; The vertical oscillation contact point structure is difficult for appropriate location in use to be placed, and bothers time-consumingly, and the degree of reliability is poor.

The purpose of this utility model provides that a kind of sensitivity is reliable, small volume and less weight, be fit to the earthquake Alarm of family expenses.

Earthquake siren for household is made up of seismic event geophone and sound and light alarm electronic circuit, and electronic circuit comprises signal amplification shaping device, bistable trigger circuit, sound control circuit, lamp lighting control circuit, sound generating circuit and power supply.The seismic event geophone is a pickoff, its electric signal output is linked into the input end of amplification shaping device, the output of amplification shaping device is linked into sound control circuit and lamp lighting control circuit through bistable trigger circuit again, sound control circuit connects sound generating circuit by a transistor switch, lamp lighting control circuit sending and receiving optical diode.The positive pole of power supply is by a switch access transistor switch.

The seismic event geophone is by piezoelectric ceramic piece, soft spring, heavy ball, and sleeve, extension line and shell constitute.Wherein heavy ball is connected on the shell, is suspended in the sleeve by soft single spring, does not contact with sleeve when static; Sleeve is a hollow cylinder, fixedlys connected with piezoelectric ceramic piece in its lower end, and piezoelectric ceramic piece is fixedlyed connected with shell.Piezoelectric ceramic piece, soft spring, heavy ball and sleeve all place shell, and extension line is drawn out to the outside of shell by the two poles of the earth of piezoelectric ceramic piece.

The utility model adopts non-contact structure, and work is sensitive reliable, can at will put on the table, the energized switch gets final product work in the cabinet, and is very easy to use.Can send sound and light alarm at the beginning of earthquake takes place, reminds people takes urgent measure.

The tube-in-tube structure of the seismic event geophone in the utility model earthquake siren for household is to the seismic event sensitivity, and insensitive for the quick-fried sudden shock that waits of the coal of vertical ground, can get rid of the interference of various non-seismic events.

The utility model is simple in structure, can do small volume and less weight, be fit to family and use.

Further specify structure of the present utility model below in conjunction with drawings and embodiments.

Fig. 1 is a composition frame chart of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model;

Fig. 3 is the embodiment structural representation of seismic event geophone;

Fig. 4 is another embodiment structural representation of seismic event geophone.

Among Fig. 1, I is the seismic event geophone, and II is an amplification shaping device, and III is a bistable trigger circuit, and IV is the alarm sound control circuit, and V is a lamp lighting control circuit, and VI is an alarm sound generation circuit, and VII is a power supply.

The seismic event geophone is to be made of piezoelectric ceramic piece 1, soft spring 2, heavy ball 3, sleeve 4, extension line 5 and shell 6.Soft spring 2 one ends connect heavy ball 3, one ends and connect shell 6, and heavy ball 3 is suspended in the sleeve 4, do not contact with sleeve 4 during vertical vibration when static or up and down.Sleeve 4 is hollow cylinders, and its lower end and piezoelectric ceramic piece 1 bond together; Piezoelectric ceramic piece 1, soft spring 2, heavy ball 3, sleeve 4 all place 6, two extension lines 5 of shell to be welded on the two poles of the earth of piezoelectric ceramic piece 1, are drawn out to outside the housing 6.Soft spring 2 can be on the top board of housing 6 with the tie point of housing 6, and heavy ball 3 is suspended in the sleeve 4 by spring 2; Spring 2 also can be on the base plate of shell 6 with the contact of shell 6, and spring 2 is put heavy ball 3 holders in sleeve 4, and at this moment piezoelectric ceramic piece 1 should have center pit, makes spring 2 pass this hole and enters in the sleeve 4.

The principle of work of seismic event geophone is: when earthquake takes place, seismic event causes that the earth's crust reaches transverse movement up and down, geophone shell 6 in the alarm moves with the earth's crust, its inner heavy ball 3 will be because inertia will lag behind the motion of shell 6 and sleeve 4, because the slit between heavy ball 3 and the sleeve 4 is very little, must run foul of each other, its interaction force passes to piezoelectric ceramic piece 1 through sleeve 4, thereby make and produce the pulsating direct current electromotive force on the two poles of the earth of piezoelectric ceramic piece 1, and output to the input end of sound light alarming circuit through being welded on extension line 5 on piezoelectric ceramic piece 1 the two poles of the earth.

The amplification shaping device of warning circuit, bistable trigger circuit, lamp lighting control circuit, sound control circuit are finished by a hex inverter integrated circuit block CD4069.Phase inverter FX ₁With resistance R ₁, capacitor C ₁Parallel connection, its output terminal passes through capacitor C ₂Ground connection is inserted phase inverter FX simultaneously ₂Input end, phase inverter FX ₁, FX ₂Compose in series shaping amplifier; Phase inverter FX ₂Output insert phase inverter FX ₃, simultaneously by connecing button KB ground connection; Phase inverter FX ₃Output be divided into three the tunnel, insert phase inverter FX respectively ₄, FX ₅, FX ₆, phase inverter FX ₄Output pass through resistance R ₂Insert FX again ₃Input end, i.e. phase inverter FX ₃, FX ₄The trigger flip-flop of forming single-ended input; Trigger output is through FX ₅Again by LED ground connection, trigger output simultaneously is through FX after anti-phase ₆Anti-phase back access transistor BG ₁Base stage, BG ₁Emitter connects battery anode through K switch G, and its collector inserts music four tones of standard Chinese pronunciation sheet IC ₁6 pin, IC ₁4 pin, 5 pin cross-over connection resistance R ₃, its 3 pin ground connection, 2 pin meet amplifier tube BG ₂Base stage, 1 pin meets BG ₂Collector, BG ₂Emitter through loudspeaker ground connection.

The principle of work of earthquake siren for household is: when earthquake took place, the seismic event geophone detected seismic signal output direct current millivolt electromotive force, delivers to the FX in the CD4069 hex inverter ₁Input end, through FX ₁, FX ₂Linear amplification, shaping, output go control to trigger FX ₃, FX ₄The trigger flip-flop of forming makes it to export low-potential signal, controls two other phase inverter FX ₅, FX ₆Be noble potential output, make respectively that LED is bright, music circuit sheet IC ₁Output audio signal send loudspeaker to send alarm call.When needing to end to report to the police, can press the button KB, make the bistable trigger-action circuit upset, lamp goes out, warning stops, and alarm is got back to the preparation alarm condition again.

Claims

1, a kind of earthquake siren for household, form by seismic event geophone and sound and light alarm electronic circuit, electronic circuit comprises the signal amplification shaping device, bistable trigger circuit, sound control circuit, lamp lighting control circuit, sound generating circuit and power supply, the seismic event geophone is a pickoff, its electric signal output is linked into the input end of amplification shaping device, the output of amplification shaping device is linked into sound control circuit and lamp lighting control circuit through bistable trigger circuit again, sound control circuit connects sound generating circuit by a transistor switch, lamp lighting control circuit sending and receiving optical diode, it is characterized in that the seismic event geophone is by piezoelectric ceramic piece (1), soft spring (2), heavy ball (3), sleeve (4), extension line (5) and shell (6) constitute, wherein heavy ball (3) is connected on the shell (6) by soft spring (2), be suspended in the sleeve (4), do not contact with sleeve (4) when static; Sleeve (4) is a hollow cylinder, fixedly connected with piezoelectric ceramic piece (1) in its lower end, piezoelectric ceramic piece (1) is fixedlyed connected with shell (6), piezoelectric ceramic piece (1), soft spring (2), heavy ball (3), sleeve (4) all place shell (6), and extension line (5) is drawn out to the outside of shell (6) by the two poles of the earth of piezoelectric ceramic piece (1).

2, earthquake siren for household according to claim 1 is characterized in that the tie point of soft spring (2) and housing (6) in the seismic event geophone is on the top board of housing (6), and heavy ball (3) is suspended in the sleeve (4) by soft spring (2).

3, earthquake siren for household according to claim 1, the tie point that it is characterized in that soft spring (2) and housing (6) in the seismic event geophone is on the base plate of housing (6), heavy ball (3) is put in sleeve (4) by soft spring (2) holder, piezoelectric ceramic piece (1) has center pit, soft spring (2) passes the center pit of piezoelectric ceramic piece (1), extend in the sleeve (4).

4, earthquake siren for household according to claim 1 is characterized in that amplification shaping device, bistable trigger circuit, lamp lighting control circuit, the sound control circuit of warning circuit finished phase inverter FX by a hex inverter integrated circuit block CD4069 ₁With resistance R ₁, capacitor C ₁Parallel connection, its output terminal passes through capacitor C ₂Ground connection is inserted phase inverter FX simultaneously ₂Input end, phase inverter FX ₁, FX ₂Compose in series shaping amplifier; Phase inverter FX ₂Output insert phase inverter FX ₃, simultaneously by button KB ground connection; Phase inverter FX ₃Output be divided into three the tunnel, insert phase inverter FX respectively ₄, FX ₅, FX ₆, phase inverter FX ₄Output pass through resistance R ₂Insert FX again ₃Input end, i.e. phase inverter FX ₃, FX ₄The trigger flip-flop of forming single-ended input; Trigger output is through FX ₅Again by LED ground connection, trigger output simultaneously is through FX after anti-phase ₆Anti-phase back access transistor BG ₁Base stage, BG ₁Emitter connects battery anode through K switch G, and its collector inserts music four tones of standard Chinese pronunciation sheet IC ₁6 pin, IC ₁4 pin, 5 pin cross-over connection resistance R ₃, its 3 pin ground connection, 2 pin insert amplifier tube BG ₂Base stage, 1 pin meets BG ₂Collector, BG ₂Emitter through loudspeaker ground connection.