CN2266138Y - Civil Seism automatic alarm device - Google Patents

Abstract

The utility model relates to an earthquake alarm which is formed by the connection of a power circuit, a vibration sensor, an alarm delay control circuit and a sound alarm circuit. The power circuit supplies 6V direct current to the whole earthquake alarm and can be automatically charged; the vibration sensor changes vibration signals which generate when an earthquake happens into electric signals to control the work of the delay control; two kinds of time delayed signals used for controlling sound alarm and light alarm are respectively generated; the sound alarm circuit is used for controlling the interval and the frequency of sounds; the vibration sensor is composed of a spring sheet, a weight dropper which is positioned on the spring sheet, a horizontally triggering sheet which is positioned on one end of the spring sheet, a longitudinally triggering sheet, a concave bowl which is positioned on the lower part of the triggering sheet and a steel ball which is positioned in the concave bowl.

Description

The civil earthquake autoalarm

The utility model relates to a kind of telltale, relates to a kind of earthquake Alarm or rather.

Great mass of data shows: the generation of ruinous earthquake need be experienced compressional wave and two brief period of shearing wave, the mistiming that arranged approximately 30 seconds between compressional wave and shearing wave, if can just can pick up this signal and warning in time in the initial period that compressional wave sends, then can win extremely valuable time, to reduce casualties as far as possible.In addition, have aftershock, the flash of light preceding an earthquake and earthquake sounds as big shake is last, strong and the dull flash of light preceding an earthquake, earthquake sounds occurred in shake usually in preceding ten minutes, the preceding aftershock of principal earthquake also can take place relatively, if can pick up the seismic wave of this aftershock and convert sound and light alarm to, that can not make people be dispersed into the safety area in the ten minutes before compressional wave arrives.

The instrument that the department of earthquake prediction detection is at present had mostly complex structure, cost an arm and a leg, be not suitable for civilian, even forecast detection department accurately detects aftershock, the flash of light preceding an earthquake, earthquake sounds or compressional wave in addition, also can not in the extremely short time, notify huge numbers of families, therefore design that a kind of to be suitable for civilian automatic earthquake alarm be very necessary, especially when the 5th earthquake active period of China arrives.

The purpose of this utility model is a kind of civil earthquake autoalarm of design on the natural law when finding and rely on earthquake to take place and characteristics and the basis that is used, has simple in structure, small and light, characteristic of accurate is easy to carry, reports to the police.

Civil earthquake autoalarm of the present utility model comprises power circuit, shock sensor and contains loudspeaker and the sound light alarming circuit of illuminating lamp, it is characterized in that:

Delay control circuit and audible alarm circuit that described sound light alarming circuit is reported to the police by acoustic alarm and light connect and compose;

Described shock sensor, triggering sheet by the recessed bowl of metal, the metal that is arranged in can the be free movable steel ball of recessed bowl and is positioned at recessed bowl top constitutes, triggering between sheet bottom and described recessed bowl edge has the slit, and described triggering sheet and recessed bowl connect described delay control circuit input end by lead-in wire respectively.

The triggering sheet of described shock sensor by a bar shaped shell fragment, be positioned at weight on the bar shaped shell fragment, be positioned at shell fragment one end and become cross connection and trigger sheet and vertically trigger sheet and form perpendicular to the level of described recessed bowl edge.

Described delay control circuit comprises first single-shot trigger circuit, second single-shot trigger circuit and transistor relay driving circuit, described audible alarm circuit is by first astable oscillator, the power amplifier of second astable oscillator and the aural signal formation that is linked in sequence, described first, the trigger end of second single-shot trigger circuit also connects described shock sensor, the first single-shot trigger circuit output terminal connects transistor relay driving circuit input end, relay first contact connects power supply and illuminating lamp, relay second contact connects the power end and the power circuit output end of audible alarm circuit intermediate power amplifier, described second single-shot trigger circuit output termination first, the vibration control end of second astable oscillator, described power amplifier output connects described loudspeaker.

When extensional vibration (up and down) or horizontal vibration (swing) take place, steel ball is drawn together in recessed bowl, make recessed bowl and vertical shell fragment or horizontal shell fragment short circuit, trigger first, second single-shot trigger circuit, send sound, light warning simultaneously, by first single-shot trigger circuit control light warning time, by second single-shot trigger circuit control sound time of fire alarming, by first non-steady-state oscillation circuit control sound interrupting time, by second astable oscillator control sound alert frequency.

Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing

Fig. 1. the shock sensor structural representation

Fig. 2. the automatic earthquake alarm power circuit diagram

Fig. 3. automatic earthquake alarm time-delay, warning circuit figure

Referring to Fig. 1, vibration transducer triggers sheet 13 by bar shaped shell fragment 11, the weight 12 that is positioned at bar shaped shell fragment appropriate position, the level that is fixed in bar shaped shell fragment one end and vertically triggers sheet 14, is positioned at the recessed bowl 15 and the steel ball 16 that trigger the sheet below and constitutes, and the embodiment sensor can pick up vertically in 7 degree intensity area after testing, the transverse vibration signal.

Level triggers sheet 13 and vertically to trigger 14 one-tenths of sheets cross-shaped and bend downwards from bar shaped shell fragment 11, is positioned at recessed bowl 15 bowls along the top with four orientation, but and leaves the space between the bowl edge.When vibration does not reach the setting earthquake intensity, triggering sheet does not contact mutually with recessed bowl, steel ball 16 is still in four center positions that trigger sheet, when the earthquake compressional wave reaches the amplitude of 7 degree earthquake intensitys, triggering sheet with level, vertical dual triggering function shaken ripple influence and vibrate, make the steel ball contact trigger sheet and recessed bowl, send enabling signal to delay control circuit, beginning sound, light are reported to the police.

Referring to Fig. 2, adopt the power supply of 6V storage battery, the 220V alternating current is given the storage battery electric energy supplement automatically after the filtering of transformer step-down rectifier, guarantee the alarm uninterrupted power supply.

Form sampling amplification circuit by RW1, R1, R2, BG1 etc., BG2 is a charging control switch, and R3 is the load current-limiting resistance, and C1, C2 are filter capacitor, and D5, R4 constitute charging indication.In the storage battery terminal voltage during greater than 6V (as 6.7V), BG1, BG2 end, when the storage battery terminal voltage drops to 6V, BG1 for BG2 provides enough base flows, makes BG2 become the saturation conduction state by ending by by becoming the conducting magnifying state, being equivalent to switch closure charges to storage battery, when the storage battery terminal voltage is charged to 6.5V, BG1, BG2 by amplify, state of saturation becomes and ends, charging finishes.Repeat so to guarantee that the storage battery terminal voltage is 6-6.7V, make storage battery and load be in good working order.

Referring to Fig. 3, by the time substrate IC1, IC2 (555) and peripheral cell thereof constitute first, second single-shot trigger circuit, form the warning delay control circuit of illuminating lamp ZD, loudspeaker Dy.The time substrate IC3, IC4 (555), amplifier IC5 (LM386) and peripheral cell thereof constitute the power amplifier of first, second astable oscillator and aural signal, form audible alarm circuit.

Embodiment is adjusted into 90 seconds with the transient state time of first single-shot trigger circuit, the transient state time of second single-shot trigger circuit is adjusted into 10 seconds, the oscillation frequency of first astable oscillator is adjusted into 1KHZ, and the oscillation frequency of second astable oscillator is adjusted into 3KHZ.

IC1, be in stable state when IC2 is flat, 3 pin are low level, and BG3 ends by J1.When the earthquake sensor is sent trigger pip here (C, D short circuit), IC1, IC2 become transient state by stable state, the 3 pin output high level of IC1 makes the BG3 conducting, relay J 1 action, the closed illuminating lamp ZD that connects of contact J1-1, the closed working power of connecting IC5 of contact J1-2, the 3 pin output high level of IC2 be for IC3, IC4 provide working power, makes ZD continue to light 90 seconds, the sound and continue 10 seconds.The duty of IC3 output control IC4 makes it be in the discontinuous operation state, 0.5 second off time.

The shock sensor sensing earthquake seismic wave of the utility model device is highly sensitive, the circuit design good in anti-interference performance, adopting supplied by AC/DC electricity to fill automatically stops, also can report to the police as usual during power failure, this device also can be made emergency light and burglar alarm and use (lock switch), can be designed to family expenses, various models such as public, portable.

Claims (3)

1, a kind of civil earthquake autoalarm comprises power circuit, shock sensor and contains loudspeaker and the sound light alarming circuit of illuminating lamp, it is characterized in that:

Delay control circuit and audible alarm circuit that described sound light alarming circuit is reported to the police by acoustic alarm and light connect and compose;

Described shock sensor, triggering sheet by the recessed bowl of metal, the metal that is arranged in can the be free movable steel ball of recessed bowl and is positioned at recessed bowl top constitutes, triggering between sheet bottom and described recessed bowl edge has the slit, and described triggering sheet and recessed bowl connect described delay control circuit input end by lead-in wire respectively.

2, civil earthquake autoalarm according to claim 1 is characterized in that:

The triggering sheet of described shock sensor by a bar shaped shell fragment, be positioned at weight on the bar shaped shell fragment, be positioned at shell fragment one end and become cross connection and trigger sheet and vertically trigger sheet and form perpendicular to the level of described recessed bowl edge.

3, civil earthquake autoalarm according to claim 1 is characterized in that:

Described delay control circuit comprises first single-shot trigger circuit, second single-shot trigger circuit and transistor relay driving circuit, described audible alarm circuit is by first astable oscillator, the power amplifier of second astable oscillator and the aural signal formation that is linked in sequence, described first, the trigger end of second single-shot trigger circuit also connects described shock sensor, the first single-shot trigger circuit output terminal connects transistor relay driving circuit input end, relay first contact connects power supply and illuminating lamp, relay second contact connects the power end and the power circuit output end of audible alarm circuit intermediate power amplifier, described second single-shot trigger circuit output termination first, the vibration control end of second astable oscillator, described power amplifier output connects described loudspeaker.

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