CN2182433Y

CN2182433Y - Alarm device

Info

Publication number: CN2182433Y
Application number: CN 93229887
Authority: CN
Inventors: 于怀印
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-10
Filing date: 1993-12-10
Publication date: 1994-11-09
Anticipated expiration: 2003-12-10

Abstract

The utility model discloses an alarm for theft prevention. The circuit comprising alarm signal element, amplifier and sounding element is provided with self-powered power supply, charging circuit, charging alarm converting circuit and outdoor trigger element. When the alarm circuit is powered on, the alarm circuit is in a self-charging working state; when the trigger element acts, the alarm working state is achieved. The alarm has the advantages of simple structure, low cost, interference resistance, sensitive and reliable action, and is most suitable for peeping a protected object at far and near distances.

Description

Alarm

The utility model relates to the alarm of a kind of service equipment, property safety, especially relates to a kind of alarm that can use out of doors.

At present, in the commercially available warning device, its circuit adopts comparatively complicated transistor circuit to form.Wherein be used for the reaction accident, steal the sensitive signal part of feelings and unexpected injury, divide acousto-optic control type, infrared ray, electrostatic induction control type etc.Utilize these signal methods, will make the machine line complexity, be subject to disturb, sensitivity is low, misoperation happens occasionally, and installation cost is increased, and is therefore desirable not to the utmost.

The purpose of this utility model be to provide that a kind of line construction is simple, anti-interference good, reliable in action, a kind of alarm that sensitive signal part damage resistance is strong.

For achieving the above object, the utility model will solve by following measure: both in the alarm of being made up of sound source signal generator, amplifier and pronunciation device, be provided with chargeable electric battery and make the warning power supply, disposed the rectification circuit of charging usefulness simultaneously for it; Circuit for the charging or the conversion effect of having reported to the police; The transformer of electric energy is provided for charging; For bringing out the fine motion trigger of alarm command.Wherein:

The rectification circuit of charging usefulness, be connected in the transformer secondary loop by line, it is a series circuit by the rectifier cell group on the arm in rectifier cell and the bridge rectifier, is used to show and has or not the light-emitting component of charging current by battery from being connected between the line of rectifier cell output terminal and the ground wire;

Be used to charge or the circuit of the conversion effect of having reported to the police, form by the executive component that is located at the bridge rectifier in the transformer secondary loop and is connected on its output terminal.The first end of the movable contact of this element is connected on the anode by hand switch, and a static contact and rectifier cell anode line join, and the anodal common line of a static contact and sound source signal generator and pronunciation device joins.When transformer gets when electric, the moving contact other end and the static contact closure of joining with the rectifier cell anode are to battery charge; When the hand switch closure again dead electricity took place, with the static contact closure that unisonance source signal generator and the public electrode line of pronunciation device join, the amplifier that pronunciation device is formed through two triodes according to the frequency signal of sound source signal generator amplified, and drives it and reports to the police;

Bring out the fine motion trigger of alarm command, be connected in the transformer primary circuit, and often be in closure state, the machine that causes is loaded on outward in protected equipment or the place.

Mention the sound source signal generator in the above-mentioned measure, can be four tones of standard Chinese pronunciation matrix or language matrix; Pronunciation device can be loudspeaker or hummer; In can be, establishes executive component the midget relay of two groups or two groups above breaks; The fine motion trigger can be induction type trigger switch, press-contacting type microswitch or is mercury contact.

Because above-mentioned measure is provided with electric battery and is its charge direct supply of usefulness in the warning major loop, and easy charging, warning duty change-over circuit, thereby guaranteed the reliability of work, strengthened anti-interference, particularly the simple and easy fine motion trigger that is used for reaction accident, robber's feelings and unexpected injury that series connection is provided with in the transformer-supplied loop is located at the open air, when suffering artificial shake-up destruction, break or making the current supply circuit short circuit, all can make to be located at indoor pronunciation device warning.Perpetrator protege under unknown situation arrests, thereby the rate of cracking is improved, and has guaranteed the safety of equipment, goods and materials and the person.Because the circuit of this alarm is simple, the installation cost descends, and is beneficial to and applies.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the circuit diagram of the utility model alarm.

In circuit theory diagrams shown in Figure 1, be provided with pronunciation device (III), for realizing the light indication, between line (08) and ground wire (06), establish a light emitting diode (15) as loudspeaker (14); Amplifier (II), it directly is coupled to form by two triodes (12.13), and the base stage of triode (12) links to each other with sound source signal generator (I) signal output stage, and the negative terminal of the emitter of triode (13) and loudspeaker (14) joins; Sound source signal generator (I) can be four tones of standard Chinese pronunciation diaphragm or is analogous to " catching a thief " language sheet (11), and in parallel with loudspeaker (14).For guaranteeing that this circuit is not subjected to external interference, in established the confession DC source, both be repeatedly the battery (7) of charging, its negative pole is connected with ground wire (06), positive pole passes through hand switch (16) and is connected with moving contact (10); For to battery (7) charging, in transformer (2) secondary circuit, be charging circuit with the diode group in rectifier cell (4), light emitting diode (6) and the bridge rectifier (3) by line (04.07.10.06.05); For making charging and warning work obtain switching, in transformer (2) secondary circuit, by line (04.05) bridge rectifier circuit (3) is connected on wherein, its output terminal is connected to executive component (5), this element is to have out a midget relay that closes contact, its three contacts are (8), (9), (10), and wherein static contact (8) is connected on the line (07), and static contact (9) is connected on the line (08).When transformer (2) when electric, contact (10), (8) are connected, and make battery charge; When dead electricity, contact (10), (9) are connected, and report to the police; In the transformer primary circuit, the fine motion trigger (1) of one or one above normally off of serial connection between (01.02) line, it causes the open air by line (01.02), so that get electric or dead electricity reaction merit by transformer.Trigger adopts induction type trigger switch, press-contacting type microswitch or mercury contact more, the action effect sensitivity of mercury contact wherein, strong interference immunity.

Claims

1, a kind of alarm of being made up of sound source signal generator (I), amplifier (II) and pronunciation device (III) is characterized in that being provided with in this alarm the rectification circuit for battery (7) charging usefulness; Circuit for the charging or the conversion effect of having reported to the police; The transformer (2) of electric energy is provided for charging; Bring out the fine motion trigger of alarm command.

2, alarm according to claim 1, the rectification circuit that it is characterized in that said charging usefulness, be connected in the secondary circuit of transformer (2) by line (04.07.10.06.05), it is a series circuit by the rectifier cell group on the wall in rectifier cell (4) and the bridge rectifier (3), is useful on indirectly from the line (07.06) of rectifier cell (4) output terminal to show and have or not the light-emitting component (6) of charging current by battery.

3, alarm according to claim 1, it is characterized in that said circuit for the charging or the conversion effect of having reported to the police, form by the executive component (5) that is located at the bridge rectifier (3) in transformer (2) secondary circuit (04.05) and is connected on its output terminal, moving contact (10) one ends of this element are connected on the anode by hand switch, static contact (8) joins with the line (07) of rectifier cell anode, static contact (9) joins with sound source signal generator and the anodal public line (08) of pronunciation device, when transformer (2) when electric, the other end of moving contact (10) and static contact (8) closure are to battery charge; When the closed generation of hand switch dead electricity,, pronunciation device (III) is reported to the police with static contact (9) closure.

4, alarm according to claim 1 is characterized in that the said fine motion trigger that brings out alarm command, is connected in the transformer primary circuit, and often is in closure state, and the machine that causes is loaded on outward in protected equipment or the place.

5, alarm according to claim 1 is characterized in that said sound source signal generator (11) or is four tones of standard Chinese pronunciation matrix, or is the language matrix; Said pronunciation device (14) or be loudspeaker, or be hummer.

6, alarm according to claim 3 is characterized in that said executive component (5), for the midget relay of break more than two groups or two groups is arranged

7, alarm according to claim 4 is characterized in that the said fine motion trigger (1) that brings out alarm command, or is the induction type trigger switch, or be the press-contacting type microswitch, or is mercury contact.