CN201229654Y - Light operated alarm - Google Patents
Light operated alarm Download PDFInfo
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- CN201229654Y CN201229654Y CNU2008201148843U CN200820114884U CN201229654Y CN 201229654 Y CN201229654 Y CN 201229654Y CN U2008201148843 U CNU2008201148843 U CN U2008201148843U CN 200820114884 U CN200820114884 U CN 200820114884U CN 201229654 Y CN201229654 Y CN 201229654Y
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Abstract
The utility model discloses an optical-control alarm, which belongs to the technical field of the alarm, and comprises a signal receiving circuit that is used for receiving the optical signal, a switch circuit that is used for connecting or disconnecting according to the optical signal that is received by the signal receiving circuit, and an alarming circuit that is used for generating an alarm signal so as to perform the voice alarming when the switch circuit is connected. The optical-control alarm is mainly applied to the field of the security equipment such as the fuel gas stove; the voice circuit unit is added in the alarming circuit, so that the alarm can give a voice alarm when no optical signal exists, thereby ensuring the security.
Description
Technical field
The invention belongs to the alarm technical field, be specially photo-controlled alarm.
Background technology
The gas furnace charging capacity is big, throughput rate is high, is applicable to various types of parts tempering, preheating.The alarm that present gas furnace is used comprises signal receiving circuit and warning circuit two parts, and two parts connect as a whole, carry out warning work.Wherein, signal receiving circuit is passed through the sensor receiving optical signals, circuit turn-on, and not conducting of warning circuit this moment loudspeaker is not worked; Warning circuit is the audible alarm circuit of no voice, when gas furnace is not worked, and when promptly not having light signal generating, the warning circuit conducting, loudspeaker is reported to the police.When but gas furnace is not worked, gas leakage is described, causes security incident easily; The kitchen range valve need be closed, and light must not be seen, and need to ventilate etc., owing to there is not voice suggestion, be easy to take place security incident.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple and safe photo-controlled alarm.
For addressing the above problem, photo-controlled alarm of the present invention adopts following technical scheme:
A kind of photo-controlled alarm comprises:
Signal receiving circuit is used for receiving optical signals;
On-off circuit is used for according to the received light signal of described signal receiving circuit, conducting or not conducting;
Warning circuit is used for producing alerting signal when described on-off circuit conducting, carries out audio alert.
Wherein, described signal receiving circuit comprises a NPN type triode, the collector of a described NPN type triode links to each other with positive source by first resistance, grounded emitter, base stage links to each other with positive source by second resistance, described base stage also is connected with sensor, and described base stage is by first capacitor grounding.
Described on-off circuit comprises the 2nd NPN type triode;
The base stage of described the 2nd NPN type triode links to each other with the collector of a NPN type triode, collector links to each other with positive source by the 3rd resistance, and, the collector of described the 2nd NPN type triode links to each other with the negative pole of stabilivolt by the 4th resistance, stabilivolt plus earth, the emitter of described the 2nd NPN type triode is by the 5th resistance eutral grounding.
Further, described warning circuit comprises:
The sound circuit unit is used for when the 2nd NPN type triode conducting, produces voice signal;
Amplifier circuit unit is used for described voice signal is amplified, and exports by loudspeaker.
Wherein, described sound circuit unit comprises voice module, and the input end 5 of voice module links to each other with the negative pole of described stabilivolt, two ends 1,3 ground connection of voice module;
Described amplifier circuit unit comprises the 3rd NPN type triode, the base stage of described the 3rd NPN type triode links to each other with the output terminal 4 of described sound circuit unit, and described base stage is by the 6th resistance eutral grounding, collector links to each other with positive source by the 7th resistance, be connected with the 8th resistance between base stage and the collector, emitter passes through the 9th resistance eutral grounding, and is connected with loudspeaker between collector and the ground.
Preferably, described warning circuit also comprises the filtering circuit unit, and described filtering circuit unit comprises second capacitor, and second capacitor is connected between the output terminal 4 and ground of voice module.
Photo-controlled alarm described in the utility model by having increased the sound circuit unit in warning circuit, thereby when not having light signal, by voice suggestion, is reported to the police, and security is ensured.
Description of drawings
Fig. 1 is the structural representation of photo-controlled alarm of the present invention;
Fig. 2 is the electrical block diagram of photo-controlled alarm of the present invention.
Embodiment
The utility model aims to provide a kind of photo-controlled alarm that security is ensured.
Describe below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, described photo-controlled alarm comprises:
Signal receiving circuit 11 is used for receiving optical signals;
On-off circuit 12 is used for according to the received light signal of described signal receiving circuit, conducting or not conducting;
Warning circuit 13 is used for when the on-off circuit conducting, produces alerting signal, carries out audio alert.
Photo-controlled alarm described in the utility model, when not having light signal, warning circuit is connected, and by information of voice prompt, reports to the police, and security is ensured.
As shown in Figure 2, described signal receiving circuit 11 comprises a NPN type triode 111, the collector of a described NPN type triode links to each other with positive source by first resistance 112, grounded emitter, base stage links to each other with positive source by second resistance 113, described base stage also is connected with sensor 114, and described base stage is by first capacitor, 115 ground connection.
When light signal generating, the sensor receiving optical signals is converted into ac signal, carries out filtering, circuit turn-on by first capacitor.
Described on-off circuit 12 comprises the 2nd NPN type triode 121, the base stage of described the 2nd NPN type triode links to each other with the collector of a NPN type triode 111, collector links to each other with positive source by the 3rd resistance 122, and, the collector of described the 2nd NPN type triode links to each other with the negative pole of stabilivolt 124 by the 4th resistance 123, stabilivolt 124 plus earths, the emitter of described the 2nd NPN type triode is by the 5th resistance 125 ground connection.
Described on-off circuit ends when light signal generating is arranged; When not having light signal, by the effect of the 2nd NPN type triode, circuit turn-on.
Further, described warning circuit 13 comprises:
Sound circuit unit 131 is used for when the 2nd NPN type triode conducting, produces the voice suggestion signal;
Amplifier circuit unit 132 is used for described voice suggestion signal is amplified, and exports by loudspeaker.
Wherein, described sound circuit unit 131 comprises voice module 210, and the input end 5 of voice module 210 links to each other with the negative pole of described stabilivolt 124, two ends 1,3 ground connection of voice module 210;
Described amplifier circuit unit 132 comprises the 3rd NPN type triode 211, the base stage of described the 3rd NPN type triode links to each other with the output terminal 4 of voice module 210, and described base stage is by the 6th resistance 212 ground connection, collector links to each other with positive source by the 7th resistance 213, be connected with the 8th resistance 214 between base stage and the collector, emitter passes through the 9th resistance 215 ground connection, and is connected with loudspeaker 216 between collector and the ground.
When not having light signal generating, signal generating circuit is not worked, the on-off circuit conducting; At this moment, voice suggestion is carried out in voice module work; And information of voice prompt amplified, send alerting signal.According to different equipment, different safety instruction information can be set;
Preferably, described warning circuit also comprises filtering circuit unit 133, and described filtering circuit unit 133 comprises that second capacitor, 311, the second capacitors 311 are connected between the output terminal 4 and ground of voice module 210.
By carrying out filtering, can filter the redundant signals that the sound circuit unit produces.
Photo-controlled alarm described in the utility model is mainly used in device security safeguards technique field, for example can be applied to the gas furnace field.
Be example with the gas furnace below, principle of work of the present utility model is specifically described.
The principle of work of one of embodiment of photo-controlled alarm described in the utility model is as follows: described photo-controlled alarm is worked under the low-voltage direct electricity condition, and supply voltage is made as 6V.When gas furnace is worked, produce flame, the light signal of flame receives through sensor, be converted into the low-frequency ac electric signal, carry out filtering, and pass through the regulating action of first resistance, second resistance through first capacitor, the one NPN type triode conducting is so signal generating circuit is connected; At this moment, the 2nd NPN type triode ends, and on-off circuit is not worked, and whole warning circuit is not worked; When gas furnace is not worked, there is not flame to produce, promptly there is not light signal generating, this moment, the one NPN type triode ended, by first resistance, the 3rd resistance and the 4th resistance regulating action to voltage, and the 2nd NPN type triode conducting, described stabilivolt provides voltage stabilizing for the sound circuit unit, at this moment, the sound circuit cell operation is sent voice suggestion; Concrete voice suggestion can be gas leakage, please close the kitchen range valve, must not see light, ventilate immediately etc., and also can be other information.Carry out filtering by second capacitor; Then, under the 3rd resistance adjustment effect of NPN type triode in its place circuit in the amplifier circuit unit, conducting, information of voice prompt is through amplifying, and speaker operation is carried out audio alert.
Described photo-controlled alarm is had relatively high expectations to environmental baseline, when it is not worked, mainly is because of gas leakage, if the untimely kitchen range valve of cutting out causes security incident easily; Photo-controlled alarm described in the utility model can send when reporting to the police " gas leakage please be closed the kitchen range valve " owing to increased voice module, and relevant safety instruction, can guarantee the security of gas furnace work.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (6)
1, a kind of photo-controlled alarm is characterized in that, comprising:
Signal receiving circuit is used for receiving optical signals;
On-off circuit is used for according to the received light signal of described signal receiving circuit, conducting or not conducting;
Warning circuit is used for producing alerting signal when described on-off circuit conducting, carries out audio alert.
2, photo-controlled alarm according to claim 1, it is characterized in that, described signal receiving circuit comprises a NPN type triode, the collector of a described NPN type triode links to each other with positive source by first resistance, grounded emitter, base stage links to each other with positive source by second resistance, and described base stage also is connected with sensor, and described base stage is by first capacitor grounding.
3, photo-controlled alarm according to claim 2 is characterized in that, described on-off circuit comprises the 2nd NPN type triode;
The base stage of described the 2nd NPN type triode links to each other with the collector of a NPN type triode, collector links to each other with positive source by the 3rd resistance, and, the collector of described the 2nd NPN type triode links to each other with the negative pole of stabilivolt by the 4th resistance, stabilivolt plus earth, the emitter of described the 2nd NPN type triode is by the 5th resistance eutral grounding.
4, photo-controlled alarm according to claim 3 is characterized in that, described warning circuit comprises:
The sound circuit unit is used for when the 2nd NPN type triode conducting, produces the voice suggestion signal;
Amplifier circuit unit is used for described voice suggestion signal is amplified, and exports by loudspeaker.
5, photo-controlled alarm according to claim 4 is characterized in that, described sound circuit unit comprises voice module, and the input end of voice module (5) links to each other with the negative pole of described stabilivolt, the two ends of voice module (1), (3) ground connection;
Described amplifier circuit unit comprises the 3rd NPN type triode, the base stage of described the 3rd NPN type triode links to each other with the output terminal (4) of described sound circuit unit, and described base stage is by the 6th resistance eutral grounding, collector links to each other with positive source by the 7th resistance, be connected with the 8th resistance between base stage and the collector, emitter passes through the 9th resistance eutral grounding, and is connected with loudspeaker between collector and the ground.
6, photo-controlled alarm according to claim 5 is characterized in that, described warning circuit also comprises the filtering circuit unit, and described filtering circuit unit comprises second capacitor, and second capacitor is connected between the output terminal (4) and ground of voice module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201148843U CN201229654Y (en) | 2008-05-22 | 2008-05-22 | Light operated alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201148843U CN201229654Y (en) | 2008-05-22 | 2008-05-22 | Light operated alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229654Y true CN201229654Y (en) | 2009-04-29 |
Family
ID=40634598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201148843U Expired - Fee Related CN201229654Y (en) | 2008-05-22 | 2008-05-22 | Light operated alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229654Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106600866A (en) * | 2017-01-19 | 2017-04-26 | 吉安市井开区吉军科技有限公司 | Warehouse antitheft alarm circuit |
-
2008
- 2008-05-22 CN CNU2008201148843U patent/CN201229654Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106600866A (en) * | 2017-01-19 | 2017-04-26 | 吉安市井开区吉军科技有限公司 | Warehouse antitheft alarm circuit |
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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: 20090429 |