CN204596040U - A kind of simple alarm - Google Patents
A kind of simple alarm Download PDFInfo
- Publication number
- CN204596040U CN204596040U CN201520313026.1U CN201520313026U CN204596040U CN 204596040 U CN204596040 U CN 204596040U CN 201520313026 U CN201520313026 U CN 201520313026U CN 204596040 U CN204596040 U CN 204596040U
- Authority
- CN
- China
- Prior art keywords
- tongue tube
- open type
- self
- connects
- loudspeaker
- 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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- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses a kind of simple alarm, and it comprises a permanent magnet, an open type tongue tube, an one-way SCR, power supply, loudspeaker, the first self-locking type switch and the second self-locking type switch; The setting corresponding with open type tongue tube of described permanent magnet, described first self-locking type switch and open type tongue tube are arranged in parallel, one end of open type tongue tube connects the negative pole of power supply, the other end of open type tongue tube connects the positive pole of power supply by a biasing resistor, the other end of open type tongue tube also connects the control pole of one-way SCR, the positive pole of one-way SCR connects the positive pole of power supply by the second self-locking type switch, the negative pole of one-way SCR connects one end of loudspeaker, and the other end of loudspeaker is connected with power cathode.The utility model bright with low cost, design brief, stable performance, making easily, debugging simple, simple installation, compact.
Description
Technical field
The utility model relates to a kind of alarm, particularly relates to a kind of simple alarm.
Background technology
Drawer is generally used for placement thing, the valuables such as a lot of files are also liked being placed in drawer, and due to the cause of Long-Time Service, many times drawer is opened and does not just note shutting, more can not remember to lock after leaving for a long time, easily cause the generation of the phenomenons such as stealing.There are valuables to be placed on the inside simultaneously, cannot be discovered when other people open drawer and also be easy to cause object loss.At present, the theft-peoof magnetic-control alarm complex structure commercially sold, circuit are complicated, element is many, installation is complicated, is not suitable for the occasions that these Structure of need are simple, easy for installation, theftproof performance is high again such as drawer.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of circuit is simple, element is few, functional strong simple alarm.
The technical solution adopted in the utility model is:
A kind of simple alarm, it comprises a permanent magnet, an open type tongue tube, an one-way SCR, power supply, loudspeaker, the first self-locking type switch and the second self-locking type switch; The setting corresponding with open type tongue tube of described permanent magnet, described first self-locking type switch and open type tongue tube are arranged in parallel, one end of open type tongue tube connects the negative pole of power supply, the other end of open type tongue tube connects the positive pole of power supply by a biasing resistor, the other end of open type tongue tube also connects the control pole of one-way SCR, the positive pole of one-way SCR connects the positive pole of power supply by the second self-locking type switch, the negative pole of one-way SCR connects one end of loudspeaker, and the other end of loudspeaker is connected with power cathode.
Described permanent magnet is strip.
Described loudspeaker is the hummer of high loudness.
The utility model adopts above technical scheme, (1) when deploying troops on garrison duty, the second self-locking type switch is in closure state, the first self-locking type switch is in open mode, strip permanent magnet is arranged at above open type tongue tube, makes open type tongue tube be in conducting state.(2) under the state of deploying troops on garrison duty, when the permanent magnet of strip is removed by improper, now open type tongue tube disconnects, and the control pole of one-way SCR is in high level state, and then makes one-way SCR conducting, loudspeaker sounding.Even if in this case strip permanent magnet again get back to make above open type tongue tube open type tongue tube again conducting also cannot stop loudspeaker sounding.Now, as long as user disconnects the second self-locking type switch, loudspeaker sounding can be stopped.(3) when user uses, only need be closed by the first self-locking type switch on the basis of the state of deploying troops on garrison duty, even if now strip permanent magnet is separated with open type tongue tube, the control pole of one-way SCR is still in low level state, one-way SCR cannot conducting, and loudspeaker is sounding not.The utility model bright with low cost, design brief, stable performance, making easily, debugging simple, simple installation, compact.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details;
The circuit theory diagrams of a kind of simple alarm of Fig. 1 the utility model.
Embodiment
As shown in Figure 1, a kind of simple alarm of the utility model, it comprises a permanent magnet A0, an open type tongue tube S0, an one-way SCR D1, power supply U0, loudspeaker BZ, the first self-locking type switch S 1 and the second self-locking type switch S 2, described permanent magnet A0 and the corresponding setting of open type tongue tube S0, described first self-locking type switch S 1 is arranged in parallel with open type tongue tube S0, one end of open type tongue tube S0 connects the negative pole of power supply U0, the other end of open type tongue tube S0 connects the positive pole of power supply U0 by a biasing resistor R1, the other end of open type tongue tube S0 also connects the control pole of one-way SCR D1, the positive pole of one-way SCR D1 connects the positive pole of power supply U0 by the second self-locking type switch S 2, the negative pole of one-way SCR D1 connects one end of loudspeaker BZ, the other end of loudspeaker BZ is connected with power supply U0 negative pole.
Described permanent magnet A0 is strip.
Described loudspeaker BZ is the hummer of high loudness.
The utility model adopts above technical scheme, (1) when deploying troops on garrison duty, the second self-locking type switch is in closure state, the first self-locking type switch is in open mode, strip permanent magnet is arranged at above open type tongue tube, makes open type tongue tube be in conducting state.(2) under the state of deploying troops on garrison duty, when the permanent magnet of strip is removed by improper, now open type tongue tube disconnects, and the control pole of one-way SCR is in high level state, and then makes one-way SCR conducting, loudspeaker sounding.Even if in this case strip permanent magnet again get back to make above open type tongue tube open type tongue tube again conducting also cannot stop loudspeaker sounding.Now, as long as user disconnects the second self-locking type switch, loudspeaker sounding can be stopped.(3) when user uses, only need be closed by the first self-locking type switch on the basis of the state of deploying troops on garrison duty, even if now strip permanent magnet is separated with open type tongue tube, the control pole of one-way SCR is still in low level state, one-way SCR cannot conducting, and loudspeaker is sounding not.The utility model bright with low cost, design brief, stable performance, making easily, debugging simple, simple installation, compact.
Claims (3)
1. a simple alarm, is characterized in that: it comprises a permanent magnet, an open type tongue tube, an one-way SCR, power supply, loudspeaker, the first self-locking type switch and the second self-locking type switch; The setting corresponding with open type tongue tube of described permanent magnet, described first self-locking type switch and open type tongue tube are arranged in parallel, one end of open type tongue tube connects the negative pole of power supply, the other end of open type tongue tube connects the positive pole of power supply by a biasing resistor, the other end of open type tongue tube also connects the control pole of one-way SCR, the positive pole of one-way SCR connects the positive pole of power supply by the second self-locking type switch, the negative pole of one-way SCR connects one end of loudspeaker, and the other end of loudspeaker is connected with power cathode.
2. a kind of simple alarm according to claim 1, is characterized in that: described permanent magnet is strip.
3. a kind of simple alarm according to claim 1, is characterized in that: described loudspeaker is the hummer of high loudness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313026.1U CN204596040U (en) | 2015-05-15 | 2015-05-15 | A kind of simple alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313026.1U CN204596040U (en) | 2015-05-15 | 2015-05-15 | A kind of simple alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204596040U true CN204596040U (en) | 2015-08-26 |
Family
ID=53932171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520313026.1U Expired - Fee Related CN204596040U (en) | 2015-05-15 | 2015-05-15 | A kind of simple alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204596040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978944A (en) * | 2017-04-27 | 2017-07-25 | 江苏大学 | A kind of electric vehicle battery holder anti-theft alarm buckling and locking device |
-
2015
- 2015-05-15 CN CN201520313026.1U patent/CN204596040U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978944A (en) * | 2017-04-27 | 2017-07-25 | 江苏大学 | A kind of electric vehicle battery holder anti-theft alarm buckling and locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160515 |