CN201315085Y - Warning device - Google Patents
Warning device Download PDFInfo
- Publication number
- CN201315085Y CN201315085Y CNU2008202212315U CN200820221231U CN201315085Y CN 201315085 Y CN201315085 Y CN 201315085Y CN U2008202212315 U CNU2008202212315 U CN U2008202212315U CN 200820221231 U CN200820221231 U CN 200820221231U CN 201315085 Y CN201315085 Y CN 201315085Y
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- CN
- China
- Prior art keywords
- control unit
- audio frequency
- frequency driver
- connects
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a warning device which comprises a power supply unit, a releasing triggering type switching control unit, an audio-frequency driving unit and a sound transmitter, wherein, the output terminal of the power supply unit is connected with the switching control unit, the audio-frequency driving unit and the power supply terminal of the sound transmitter, the signal output terminal of the switching control unit is connected with the triggering terminal of the audio-frequency driving unit, and the signal output terminal of the audio-frequency driving unit is connected with the signal input terminal of the sound transmitter. The control terminal of the releasing triggering type switching control unit is arranged in the arbitrary position of the pressing point between the door and the door frame when the door is closed, the switching control unit does not act when the door is closed, and once the door is opened, the control terminal of the switching control unit is released to trigger the switching control unit to work, and a driving signal is output to enable the audio-frequency driving unit to work so as to control the sound transmitter to send out warning sound. Therefore, the warning device can carry out warning when the door is opened.
Description
Technical field
The utility model relates to warning device, relates in particular to a kind of alarm.
Background technology
At present, open-air open-air placement of part transformer station is subjected to offender's destruction easily, and some personnel (as children) also can attempt opening transformer station out of curiosity simultaneously.Because voltage is very high during substation operation, charged by force opening very easily causes casualties, and causes the interruption of power supply on the one hand, and the major accident of casualties also takes place on the other hand easily.If a kind of alarm that can either report to the police when transformer station's door is opened can be provided, can play warning function.
The utility model content
The purpose of this utility model provides a kind of alarm of implementing warning when door is opened.
A kind of alarm, wherein: this alarm comprises power supply unit, discharges flip-over type switch control unit, audio frequency driver element, acoustical generator, the power supply unit output terminal connects switch control unit, audio frequency driver element, sonorific feeder ear, the signal output part of switch control unit connects the trigger end of audio frequency driver element, and the signal output part of audio frequency driver element connects sonorific signal input part.
Described alarm, wherein: described switch control unit comprises a release type trigger switch, a thyristor, trigger switch is attempted by between power supply unit output terminal and the thyristor control end, the anodal trigger end that connects the audio frequency driver element of thyristor.
Described alarm, wherein: described audio frequency driver element comprises audio frequency driver module, power amplifier module, the trigger end of audio frequency driver module connects the signal output part of switch control unit, the signal output part of audio frequency driver module connects the signal input part of power amplifier module, and the signal output part of power amplifier module connects described sonorific signal input part.
Described alarm, wherein: described power supply unit output terminal is serially connected with the cancellation switch.
The utility model adopts technique scheme will reach following technique effect:
Alarm of the present utility model, with the control end of described release flip-over type switch control unit be arranged on when closed, door presses arbitrary position of touching mutually with doorframe, when door is closed, switch control unit is failure to actuate, in a single day door is opened, the control end of switch control unit discharges, and triggers its work, output drive signal makes the work of audio frequency driver element, and acoustical generator sounds the alarm.Therefore alarm of the present utility model can be implemented to report to the police when door is opened.
Description of drawings
Fig. 1 is the circuit theory diagrams of alarm of the present utility model.
Embodiment
Embodiment:
A kind of alarm, as shown in Figure 1, it comprises electric battery G (4.5V), cancellation switch S 2, release type trigger switch S1, thyristor VT3 (3CT2K), audio frequency chip for driving IC (KD9561), the first power amplifier VT1 (3DG6), the second power amplifier VT2 (3AX81), loudspeaker B, electric battery G connects with cancellation switch S 2, the anodal trigger end that connects audio frequency chip for driving IC of thyristor VT3, thyristor VT3 negative pole connects electric battery G negative pole, the feeder ear of audio frequency chip for driving IC connects the positive pole of electric battery G by cancellation switch S 2, series circuit one end of release type trigger switch S1 and a divider resistance R1 is connected the positive pole of electric battery G, the control end of other end connection thyristor VT3 by cancellation switch S 2; The output terminal of audio frequency chip for driving IC connects the base stage of the first power amplifier VT1, the emitter of the first power amplifier VT1 connects the negative pole of electric battery G, the collector of the first power amplifier VT1 is leaded up to divider resistance R3, cancellation switch S 2 connects the positive pole of electric battery G, another road connects the base stage of the second power amplifier VT2, constitute the two-stage power amplifier, the collector of the second power amplifier VT2 connects the positive pole of electric battery G by cancellation switch S 2, the emitter of the second power amplifier VT2 connects the connection terminal of loudspeaker B, and another connection terminal of loudspeaker B connects the negative pole of electric battery G.
With the control end of release type trigger switch S1 be arranged on when closed, door presses arbitrary position of touching mutually with doorframe, when door is closed, trigger switch S1 is failure to actuate, door is in case open, the control end of trigger switch S1 discharges, trigger its work, output drive signal makes the work of audio frequency chip for driving, handles amplification rear drive loudspeaker by two stage amplifer and sounds the alarm.Cancellation switch S 2 can be arranged on shelter outdoors, disconnect alarm when making things convenient for the staff to overhaul earlier.
Claims (4)
1, a kind of alarm, it is characterized in that: this alarm comprises power supply unit, discharges flip-over type switch control unit, audio frequency driver element, acoustical generator, the power supply unit output terminal connects switch control unit, audio frequency driver element, sonorific feeder ear, the signal output part of switch control unit connects the trigger end of audio frequency driver element, and the signal output part of audio frequency driver element connects sonorific signal input part.
2, alarm as claimed in claim 1, it is characterized in that: described switch control unit comprises a release type trigger switch, a thyristor, trigger switch is attempted by between power supply unit output terminal and the thyristor control end, the anodal trigger end that connects the audio frequency driver element of thyristor.
3, alarm as claimed in claim 1 or 2, it is characterized in that: described audio frequency driver element comprises audio frequency driver module, power amplifier module, the trigger end of audio frequency driver module connects the signal output part of switch control unit, the signal output part of audio frequency driver module connects the signal input part of power amplifier module, and the signal output part of power amplifier module connects described sonorific signal input part.
4, alarm as claimed in claim 1 or 2 is characterized in that: described power supply unit output terminal is serially connected with the cancellation switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202212315U CN201315085Y (en) | 2008-11-24 | 2008-11-24 | Warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202212315U CN201315085Y (en) | 2008-11-24 | 2008-11-24 | Warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201315085Y true CN201315085Y (en) | 2009-09-23 |
Family
ID=41126882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202212315U Expired - Fee Related CN201315085Y (en) | 2008-11-24 | 2008-11-24 | Warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201315085Y (en) |
-
2008
- 2008-11-24 CN CNU2008202212315U patent/CN201315085Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20111124 |