CN2058645U - Vibration alarm - Google Patents
Vibration alarm Download PDFInfo
- Publication number
- CN2058645U CN2058645U CN89204170U CN89204170U CN2058645U CN 2058645 U CN2058645 U CN 2058645U CN 89204170 U CN89204170 U CN 89204170U CN 89204170 U CN89204170 U CN 89204170U CN 2058645 U CN2058645 U CN 2058645U
- Authority
- CN
- China
- Prior art keywords
- alarm
- vibration
- annunciator
- coil
- circuit
- 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.)
- Withdrawn
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- Burglar Alarm Systems (AREA)
Abstract
The utility model mainly relates to an alarm controlled by vibration signal, which is composed of a vibration transducer, a direct coupled amplifier circuit, a self-hold switch circuit, an audio oscillator, a delay circuit, etc., and can be widely used for anti-theft alarms in occasions such as vehicles, door windows, safe cases, household closets, etc. The alarm is irrelevant to the surrounding environment and the monitored alarmed objects, and does not need to be adjusted in use, which is convenient.
Description
The utility model belongs to electronic alarm, relates generally to a kind of annunciator that is subjected to vibration signal control.
The annunciator of current use simply needs to promote micro-switch with mechanical action, makes the annunciator sounding, and its sensitivity is lower, and trouble is installed, and is poor for applicability; Other is advanced in infra-red alarm, the induction alarm device, and microwave alarms etc. generally have poor anti jamming capability, use trouble, shortcoming such as big affected by environment, therefore do not fit in field and strong box and household case, the cabinet and make anti-theft alarm.
Design goal of the present utility model is: propose a kind of of many usesly, antijamming capability is strong, and is highly sensitive, reliable operation, the vibration alarm that cost is low.Place it on the automobile and can monitor whole vehicle, and the article on the vehicle, anti-theft alarm made; It is placed on the door and window, can makes anti-shake-up, the damage preventing alarm of door and window; It is placed in strong box and the family expenses bin can makes anti-theft alarm.Therefore vibration alarm and environment on every side and irrelevant with the object of monitor alarm use and need not adjust, very convenient.In the shop, bank etc. needs the big place of monitoring range, can thief be had no way of doing it with many vibratioies sensor and a main frame networking formation anti-theft system.
Accompanying drawing 1 is the sensor construction scheme drawing.
Accompanying drawing 2 is a vibration alarm circuit electrical schematic diagram.
Wherein: (1) magnet, (2) elastic membrane, (3) coil, (4) support, (5) coil lead.
Elastic membrane connects together with magnet on one side in its sensor as shown in the figure, and another side links to each other with coil, and coil can vibrate with elastic membrane, and support and magnet connect together.
When certain reason causes vibration alarm or be placed with the object vibration of vibrator, magnet and support vibrate thereupon, because inertia, elastic membrane and the coil that links to each other with it will keep original state, this just makes coil and magnet produce relative vibration, at this moment just produced the induced electromotive force relevant with vibration in the coil, sensor has just been finished the task of vibration signal being converted to electric signal thus.The electric signal of sensor output is delivered to by BG1-3 through lead-in wire, and three grades of direct-coupled amplifiers that R1-9, C1-6 constitute amplify, and through C5 output D1, D2 rectification, C7 filtering triggers the self-supporting switch's circuit turn-on that is made of BG6-7, R12 then then.As can be seen from the figure, make the audio frequency oscillator that constitutes by BG8-9, R13-16, C10-11 after the BG6 conducting.Because of obtaining the power supply starting of oscillation, sound signal is delivered to the multiple unit tube that BG10-11 constitutes through R17 and is amplified back promotion loud speaker sounding.
Turn on the power switch the unnecessary warning that causes that vibration causes when using in order to exempt, vibration alarm is provided with by BG4-5, R10-11, C8, the common time delay circuit that constitutes of source switch (single-pole double throw (SPDT)), as the moving contact P of switch during at break back contact A, supply disconnecton, and with the C8 short circuit, P rigidly connects when B, the C8 open circuit, the voltage at C8 two ends still is zero, at this moment BG5 ends, therefore the BG6 conducting makes the signal of amplifier output can't deliver to switch circuit, even also sounding not of vibration vibration alarming is arranged; Afterwards since R11 to the charging effect of C8, through about ten seconds, when the voltage at C8 two ends rises to 0.7 volt, the BG5 conducting, BG4 ends, just at this moment vibration alarm enters the state of alert, this moment sensor as receiving vibration signal, will send alert.
Claims (3)
1, a kind of vibration alarm, the sensor that it is characterized in that this annunciator mainly distinguish bonded assembly elastic membrane (2) by magnet (1) and magnet (1) and coil and coil (3) is formed.
2,, it is characterized in that this annunciator is provided be made of BG1-3, R1-9, C1-6 the three grades directly audio frequency oscillators that constitute of coupling amplifying circuits, the self-supporting switch's circuit that is made of BG6-7, R12 and BG8-9, R13-16, C10-11 according to the described vibration alarm of claim 1.
3,, it is characterized in that this annunciator is provided with the time delay circuit that is made of BG4-5, R10-11, C8 and single-pole double throw (SPDT) formula source switch according to claim 1 or 2 described vibration annunciators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89204170U CN2058645U (en) | 1989-04-05 | 1989-04-05 | Vibration alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89204170U CN2058645U (en) | 1989-04-05 | 1989-04-05 | Vibration alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2058645U true CN2058645U (en) | 1990-06-27 |
Family
ID=4861587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89204170U Withdrawn CN2058645U (en) | 1989-04-05 | 1989-04-05 | Vibration alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2058645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103802792A (en) * | 2012-11-01 | 2014-05-21 | 李富强 | Antitheft device capable of avoiding false alarm caused by high decibel sound |
-
1989
- 1989-04-05 CN CN89204170U patent/CN2058645U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103802792A (en) * | 2012-11-01 | 2014-05-21 | 李富强 | Antitheft device capable of avoiding false alarm caused by high decibel sound |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |