CN203520539U - Door-opening alarm - Google Patents
Door-opening alarm Download PDFInfo
- Publication number
- CN203520539U CN203520539U CN201320461170.0U CN201320461170U CN203520539U CN 203520539 U CN203520539 U CN 203520539U CN 201320461170 U CN201320461170 U CN 201320461170U CN 203520539 U CN203520539 U CN 203520539U
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- alarm
- triode
- pin
- door
- dual timer
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- Emergency Alarm Devices (AREA)
Abstract
The utility model relates to a door-opening alarm which is composed of a trigger device, a mono-stable time delay circuit, an alarm generator, an audio power amplifier circuit, a light control circuit and a power supply circuit. A normally-closed tongue tube AG in the trigger device is mounted on a doorframe, and a permanent magnet ZT is mounted on a movable door. When the door is locked, the permanent magnet ZT is very close to the normally-closed tongue tube AG, two contacts in the normally-closed tongue tube AG are separated due to magnetic force of the ZT, and the alarm does not work; and once the door is opened, the permanent magnet ZT is separated from the normally-closed tongue tube AG, the two contacts in the normally-closed tongue tube AG are naturally connected, an illuminating lamp of the alarm starts to flicker, the nervous atmosphere during alarm is enhanced, and a loudspeaker BL emits loud sounds at the same time. The door-opening alarm is simple in installation, high in alarm sensitivity, excellent in product durability, and relatively low in production cost; and does not lose the alarming function due to interference of a decoder.
Description
Technical field
The utility model belongs to alarm technical field, specifically relates to a kind of alarm for door opening.
Background technology
In prior art, the kind of alarm is a lot, such as vehicle alarm, safety cabinet special alarm etc., but family expenses alarm for door opening is comparatively rare, main cause is the restriction that household alarm is subject to the each side such as installing space, warning sensitivity, product durability and production cost, and some electronic alarms are disturbed by demoder easily and lose alarm function.
Summary of the invention
The utility model is mainly to solve the existing technical matters of above-mentioned prior art, and a kind of alarm for door opening is provided.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of alarm for door opening, by flip flop equipment, monostable time delay circuit, alarm generator, audio power amplifier circuit, lighting control circuit and power circuit form, in described flip flop equipment, normally closed dry reed pipe AG is arranged on doorframe, permanent magnet ZT is arranged on movable door, one end ground connection of normally closed dry reed pipe AG, the other end is connected to the 6 pin TRIG ends of dual timer IC1A, the 5 pin OUT ends of dual timer IC1A are divided into two branch roads, a branch road is connected to illuminating lamp H through bidirectional triode thyristor VS, another branch road is through triode VTI, VT2 is connected to the 12 pin THOLD ends of dual timer IC1B, the 12 pin THOLD ends of dual timer IC1B connect 8 pin TRIG ends and are connected to power positive end through charging capacitor C4, the 5 pin OUT ends of dual timer IC1B are connected to SW end and the vdd terminal of speech IC IC2, the TO end of speech IC IC2 is connected to the base stage of triode VT3, the collector of triode VT3 is connected to power positive end, the emitter of triode VT3 is through relay J 1 ground connection, the contact J1-1 of relay J 1 is serially connected between the 5 pin OUT ends and bidirectional triode thyristor VS of dual timer IC1A, the O/P end of speech IC IC2 is through triode VT4, VT5 is connected to loudspeaker BL.
As preferably, described alarm for door opening also comprises preset lockout circuit, and preset lockout circuit forms by hiding switch S 2, triode VT6, VT7 and relay J 2, and the contact J2-1 of relay J 2 is serially connected in after complete machine power switch S1 on power circuit.
In the time of on door lock, permanent magnet ZT and normally closed dry reed pipe AG lean on very closely, the magnetic force of ZT causes two contacts separation in normally closed dry reed pipe AG, now the 6 pin TRIG ends of dual timer IC1A are high level, dual timer IC1A is in reset mode, 5 pin OUT ends are low level, bidirectional triode thyristor VS triggerless electric current and blocking, illuminating lamp H is in extinguishing state, triode VT1 is no-bias and ending also, conducting of triode VT2, make 12 pin THOLD ends and the 8 pin TRIG end of dual timer IC1B be the high level that is greater than 2/3 supply voltage, the 9 pin OUT of dual timer IC1B hold also output low level, speech IC IC2 non-transformer is not worked, once door is opened, permanent magnet ZT is separated with normally closed dry reed pipe AG, in normally closed dry reed pipe AG, two contacts are connected naturally, cause the 6 pin TRIG ends of dual timer IC1A to become the low level lower than 1/3 supply voltage, now dual timer IC1A set immediately, the 5 pin OUT ends of dual timer IC1A become high level from original low level, a branch road makes bidirectional triode thyristor VS triggering and conducting, illuminating lamp H lights at once, as the illuminating lamp of entering with (if entered daytime, because photoresistance RG internal resistance is very little, the dividing potential drop deficiency of R11 and RG is so that VS triggering and conducting, therefore daytime is when enter, H can not work), another branch road makes triode VT1 turn-on transistor VT2 cut-off, the short circuit status releasing of charging capacitor C4, power supply charges to charging capacitor C4 by resistance R 6, now 12 pin THOLD ends and the 8 pin TRIG terminal potentials of dual timer IC1B are more and more lower, when its current potential is during lower than 1/3 supply voltage, the 9 pin OUT ends of dual timer IC1B become high level, now speech IC IC2 obtains power supply and works, the contact J1-1 that the pulse current that the T0 end of speech IC IC2 produces amplifies pusher motor type relay J1 through triode VT3 runs jointly, so just make original permanent bright illuminating lamp become flashing lamp, strengthen the tense atmosphere while reporting to the police, the alert audio signal of the O/P of speech IC IC2 end output is through triode VT4 simultaneously, after VT5 amplifies, promote loudspeaker BL and send loud and clear sound.Report to the police a period of time, thief has frightened away, its police whistle sound can stop automatically, this is because dual timer IC1A is monostable mode of operation, until its 1 pin DISCH end and 2 pin THOLD, hold when charging capacitor C1 charging voltage rises to 2/3 supply voltage, dual timer IC1A just automatically resets, and the 5 pin OUT ends of dual timer IC1A just revert to low level automatically.During use, after opening complete machine power switch S1, should click in time and hide switch S 2, make triode VT6, VT7 conducting, the temporary transient adhesive of relay J 2, its contact J2-1 disconnects, cut off the power supply of warning circuit, so owner can not cause wrong report when alarm being set closing the door; When door lock well after, capacitor C 8 discharge offs to be charged, triode VT6, VT7 cut-off, relay J 2 discharges, its contact J2-1 is closed, power supply is connected automatically, complete machine is in stand-by state.
The utility model is installed simple, warning sensitivity is high, product durability is good, production cost is lower, not disturbed by demoder and lose alarm function, improves a little, the utility model can also be used in cell unit door, guarantee the intercom system safe handling of cell unit, promote community safety, therefore there is the features such as simple in structure, reasonable in design.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1, the utility model is by flip flop equipment, monostable time delay circuit, alarm generator, audio power amplifier circuit, lighting control circuit and power circuit form, normally closed dry reed pipe AG in flip flop equipment is arranged on doorframe, permanent magnet ZT is arranged on movable door, one end ground connection of normally closed dry reed pipe AG, the other end is connected to the 6 pin TRIG ends of dual timer IC1A, the 5 pin OUT ends of dual timer IC1A are divided into two branch roads, a branch road is connected to illuminating lamp H through bidirectional triode thyristor VS, another branch road is through triode VTI, VT2 is connected to the 12 pin THOLD ends of dual timer IC1B, the 12 pin THOLD ends of dual timer IC1B connect 8 pin TRIG ends and are connected to power positive end through charging capacitor C4, the 5 pin OUT ends of dual timer IC1B are connected to SW end and the vdd terminal of speech IC IC2, the TO end of speech IC IC2 is connected to the base stage of triode VT3, the collector of triode VT3 is connected to power positive end, the emitter of triode VT3 is through relay J 1 ground connection, the contact J1-1 of relay J 1 is serially connected between the 5 pin OUT ends and bidirectional triode thyristor VS of dual timer IC1A, the O/P end of speech IC IC2 is through triode VT4, VT5 is connected to loudspeaker BL.Alarm for door opening also comprises preset lockout circuit, and preset lockout circuit forms by hiding switch S 2, triode VT6, VT7 and relay J 2, and the contact J2-1 of relay J 2 is serially connected in after complete machine power switch S1 on power circuit.
In the time of on door lock, permanent magnet ZT and normally closed dry reed pipe AG lean on very closely, the magnetic force of ZT causes two contacts separation in normally closed dry reed pipe AG, now the 6 pin TRIG ends of dual timer IC1A are high level, dual timer IC1A is in reset mode, 5 pin OUT ends are low level, bidirectional triode thyristor VS triggerless electric current and blocking, illuminating lamp H is in extinguishing state, triode VT1 is no-bias and ending also, conducting of triode VT2, make 12 pin THOLD ends and the 8 pin TRIG end of dual timer IC1B be the high level that is greater than 2/3 supply voltage, the 9 pin OUT of dual timer IC1B hold also output low level, speech IC IC2 non-transformer is not worked, once door is opened, permanent magnet ZT is separated with normally closed dry reed pipe AG, in normally closed dry reed pipe AG, two contacts are connected naturally, cause the 6 pin TRIG ends of dual timer IC1A to become the low level lower than 1/3 supply voltage, now dual timer IC1A set immediately, the 5 pin OUT ends of dual timer IC1A become high level from original low level, a branch road makes bidirectional triode thyristor VS triggering and conducting, illuminating lamp H lights at once, as the illuminating lamp of entering with (if entered daytime, because photoresistance RG internal resistance is very little, the dividing potential drop deficiency of R11 and RG is so that VS triggering and conducting, therefore daytime is when enter, H can not work), another branch road makes triode VT1 turn-on transistor VT2 cut-off, the short circuit status releasing of charging capacitor C4, power supply charges to charging capacitor C4 by resistance R 6, now 12 pin THOLD ends and the 8 pin TRIG terminal potentials of dual timer IC1B are more and more lower, when its current potential is during lower than 1/3 supply voltage, the 9 pin OUT ends of dual timer IC1B become high level, now speech IC IC2 obtains power supply and works, the contact J1-1 that the pulse current that the T0 end of speech IC IC2 produces amplifies pusher motor type relay J1 through triode VT3 runs jointly, so just make original permanent bright illuminating lamp become flashing lamp, strengthen the tense atmosphere while reporting to the police, the alert audio signal of the O/P of speech IC IC2 end output is through triode VT4 simultaneously, after VT5 amplifies, promote loudspeaker BL and send loud and clear sound.Report to the police a period of time, thief has frightened away, its police whistle sound can stop automatically, this is because dual timer IC1A is monostable mode of operation, until its 1 pin DISCH end and 2 pin THOLD, hold when charging capacitor C1 charging voltage rises to 2/3 supply voltage, dual timer IC1A just automatically resets, and the 5 pin OUT ends of dual timer IC1A just revert to low level automatically.During use, after opening complete machine power switch S1, should click in time and hide switch S 2, make triode VT6, VT7 conducting, the temporary transient adhesive of relay J 2, its contact J2-1 disconnects, cut off the power supply of warning circuit, so owner can not cause wrong report when alarm being set closing the door; When door lock well after, capacitor C 8 discharge offs to be charged, triode VT6, VT7 cut-off, relay J 2 discharges, its contact J2-1 is closed, power supply is connected automatically, complete machine is in stand-by state.
The utility model is installed simple, warning sensitivity is high, product durability is good, production cost is lower, not disturbed by demoder and lose alarm function, improves a little, the utility model can also be used in cell unit door, guarantee the intercom system safe handling of cell unit, promote community safety, therefore there is the features such as simple in structure, reasonable in design.
Finally, it should be pointed out that above embodiment is only the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all should think and belong to protection domain of the present utility model.
Claims (2)
1. an alarm for door opening, by flip flop equipment, monostable time delay circuit, alarm generator, audio power amplifier circuit, lighting control circuit and power circuit form, it is characterized in that in described flip flop equipment, normally closed dry reed pipe AG is arranged on doorframe, permanent magnet ZT is arranged on movable door, one end ground connection of normally closed dry reed pipe AG, the other end is connected to the 6 pin TRIG ends of dual timer IC1A, the 5 pin OUT ends of dual timer IC1A are divided into two branch roads, a branch road is connected to illuminating lamp H through bidirectional triode thyristor VS, another branch road is through triode VTI, VT2 is connected to the 12 pin THOLD ends of dual timer IC1B, the 12 pin THOLD ends of dual timer IC1B connect 8 pin TRIG ends and are connected to power positive end through charging capacitor C4, the 5 pin OUT ends of dual timer IC1B are connected to SW end and the vdd terminal of speech IC IC2, the TO end of speech IC IC2 is connected to the base stage of triode VT3, the collector of triode VT3 is connected to power positive end, the emitter of triode VT3 is through relay J 1 ground connection, the contact J1-1 of relay J 1 is serially connected between the 5 pin OUT ends and bidirectional triode thyristor VS of dual timer IC1A, the O/P end of speech IC IC2 is through triode VT4, VT5 is connected to loudspeaker BL.
2. a kind of alarm for door opening according to claim 1, it is characterized in that described alarm for door opening also comprises preset lockout circuit, preset lockout circuit forms by hiding switch S 2, triode VT6, VT7 and relay J 2, and the contact J2-1 of relay J 2 is serially connected in after complete machine power switch S1 on power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461170.0U CN203520539U (en) | 2013-07-30 | 2013-07-30 | Door-opening alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461170.0U CN203520539U (en) | 2013-07-30 | 2013-07-30 | Door-opening alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203520539U true CN203520539U (en) | 2014-04-02 |
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ID=50379433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320461170.0U Expired - Lifetime CN203520539U (en) | 2013-07-30 | 2013-07-30 | Door-opening alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203520539U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978818A (en) * | 2014-04-04 | 2015-10-14 | 南京化工职业技术学院 | Burglar alarm |
| CN106523031A (en) * | 2016-10-26 | 2017-03-22 | 上海大屯能源股份有限公司 | Air door opening and closing sensing device with acousto-optic alarm function |
| CN108922128A (en) * | 2018-06-22 | 2018-11-30 | 国网天津市电力公司 | A kind of computer room gate inhibition automatic alarm system |
| CN113345181A (en) * | 2021-05-08 | 2021-09-03 | 张元秀 | Paediatrics ward alarm circuit of windowing |
-
2013
- 2013-07-30 CN CN201320461170.0U patent/CN203520539U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978818A (en) * | 2014-04-04 | 2015-10-14 | 南京化工职业技术学院 | Burglar alarm |
| CN106523031A (en) * | 2016-10-26 | 2017-03-22 | 上海大屯能源股份有限公司 | Air door opening and closing sensing device with acousto-optic alarm function |
| CN106523031B (en) * | 2016-10-26 | 2018-12-18 | 上海大屯能源股份有限公司 | Air door switch sensing device with sound and light of alarm |
| CN108922128A (en) * | 2018-06-22 | 2018-11-30 | 国网天津市电力公司 | A kind of computer room gate inhibition automatic alarm system |
| CN113345181A (en) * | 2021-05-08 | 2021-09-03 | 张元秀 | Paediatrics ward alarm circuit of windowing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 316000 Zhejiang city of Zhoushan province Putuo District Donggang Street champs Street No. 47 champs garden room 12 410-411 Patentee after: ZHEJIANG HENGXIN TECHNOLOGY CO.,LTD. Address before: 316000 Zhejiang city of Zhoushan province Putuo District Donggang champs Street No. 7 4 floor Patentee before: ZHEJIANG HENGXIN ELECTRONICS SCIENCE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |