CN201331853Y - Demonstration instrument for smoke-type fire alarm - Google Patents
Demonstration instrument for smoke-type fire alarm Download PDFInfo
- Publication number
- CN201331853Y CN201331853Y CNU2008201708671U CN200820170867U CN201331853Y CN 201331853 Y CN201331853 Y CN 201331853Y CN U2008201708671 U CNU2008201708671 U CN U2008201708671U CN 200820170867 U CN200820170867 U CN 200820170867U CN 201331853 Y CN201331853 Y CN 201331853Y
- Authority
- CN
- China
- Prior art keywords
- smog
- unit
- alarm
- demonstration
- smoke
- 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 - Lifetime
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- Fire Alarms (AREA)
Abstract
The utility model relates to a demonstration instrument for a smoke-type fire alarm. The demonstration instrument comprises a general mold plate for the demonstration instrument and a smoke-type fire alarm, wherein, the smoke-type fire alarm is mounted on a general mold plate for the demonstration instrument. The utility model is characterized in that a smoke demonstrating unit comprises an enclosed container, a light-emitting tube and a light-receiving tube; and the light-emitting tube and the light-receiving tube are mounted in the enclosed container with at least one surface having ventilation holes. The utility model has the following beneficial effects: by virtue of adoption of the simple structure, the demonstration instrument realizes the straight and clear principle of the alarm, and directly demonstrates that the acoustooptic alarm can be conducted when the smoke in the enclosed container reaches a certain level, so that the students can learn the structure, the principle and the application of a photoelectric sensor by experiments.
Description
1, technical field
The utility model relates to a kind of education experiment equipment, particularly a kind ofly is used for middle and primary schools' demonstration of experiment teaching, and has the mock-up demonstrator of practical warning function.
2, background technology
At present, in middle and primary schools' experimental teaching, the sensor application class experiment of most is arranged, and the demonstration of this class experiment all is that the finished product of purchasing on market is demonstrated in most of school, even tests in " oral account " that this class experiment of a lot of schools can only become the teacher.Like this, just make students can't see the inner structure of sensor clearly, be difficult to get a real idea of its principle of work, so this class lecture experiment of sensor can't well carry out all the time.
In order to allow students better understand principle of sensors, grasp the application of sensor, design a kind of inner structure that can intuitively show sensor, the demonstration instrument of clear its inner principle of demonstration has become the task of top priority.
3, utility model content
The purpose of this utility model provides a kind of teaching with smog formula fire-alarm demonstrator, can carry out sound and light alarm when smog reaches certain value.This smog formula fire-alarm demonstrator not only can show application and the principle of work thereof of photoelectric sensor in smog formula fire alarm.
The technical scheme that the utility model adopted is a kind of smog formula fire-alarm demonstrator of design, it comprises: demonstration instrument common template and smog formula fire-alarm, described smog formula fire-alarm is installed on the demonstration instrument common template, described smog formula fire-alarm comprises power supply unit, the smog demonstration unit, signal processing unit, the warning output unit, described power supply unit is the prime of smog demonstration unit, be mainly the smog demonstration unit power supply is provided, described smog demonstration unit is as the input end of signal processing unit, described signal processing unit is handled amplification with the signal that receives, and described warning output unit is the output terminal of signal processing unit.Described smog demonstration unit comprises a closed container, luminotron, light receiving tube, at least one air vent of having worn of described closed container, and described luminotron, light receiving tube are installed in the closed container.Described warning output unit comprises pilot lamp, hummer.Described power supply unit comprises DC5V voltage, switch and a resistance, and as the working power of luminotron, described switch is connected with positive source, resistance is connected with power cathode, and the other end of switch, resistance is connected with luminotron respectively.
Described signal processing unit and alarm indication unit are the practical typical circuit of applied smog formula fire-alarm in the actual life, and signal processing circuit drives the alarm indication unit; The alarm indication unit can be by a kind of and above form display alarm state, as sound, luminous etc.
The present utility model beneficial effect is: rely on its simple structure, the alarm principle is visual and clear, and can ocular demonstration go out when the smog in the closed container reaches certain value to carry out sound and light alarm, thereby the student can grasp structure, principle and the application thereof of photoelectric sensor in experiment.
4, description of drawings
Fig. 1 is the front view of the utility model smog formula fire-alarm demonstrator.
Fig. 2 is the schematic diagram of the utility model smog formula fire-alarm demonstrator.
Among Fig. 1,2,1 switch, binding post 2, closed container 3, sensitivity adjusting potentiometer 4, hummer 5, pilot lamp 6.
5, embodiment
With reference to Fig. 1,2, it is the utility model smog formula fire-alarm demonstrator preferred construction synoptic diagram, will help to understand the utility model by embodiment, but not limit content of the present utility model.Embodiment is:
The utility model comprises: demonstration instrument common template and smog formula fire-alarm.According to Fig. 1 the schematic diagram 2 of smog formula fire-alarm circuit is drawn in the demonstration instrument common template, and switch 1, sensitivity adjusting potentiometer 4, hummer 5, pilot lamp 6 is external, and test for convenience is provided with binding post 2 at the associated connections place simultaneously.At least simultaneously the closed container 3 that has air vent is installed directly over block scheme, luminotron, the certain distance in light receiving tube interval are installed in closed container 3 inside, the DC5V accumulator is installed in the positive or behind of template, according to schematic diagram each device is connected with lead at the demonstration instrument common template behind with signal processing circuit.
Schematic diagram is made up of DC5V power supply E, K switch, resistance R, luminotron D, light receiving tube Q, signal processing unit, hummer BZ, pilot lamp L.Hummer BZ and pilot lamp L form the alarm indication unit, and signal processing unit and alarm indication unit are applied smog formula fire-alarm canonical form in the actual life, and signal processing circuit drives the alarm indication unit.When closing a switch, and when smog is arranged, after signal processing unit receives signal,, drive the alarm indication unit through processing and amplifying, thus hummer BZ, pilot lamp L sounding, luminous respectively.
Claims (4)
1, a kind of teaching smog formula fire-alarm demonstrator, it comprises demonstration instrument common template and smog formula fire-alarm, described smog formula fire-alarm is installed on the demonstration instrument common template, described smog formula fire-alarm comprises power supply unit, the smog demonstration unit, signal processing unit, the warning output unit, described power supply unit is the prime of smog demonstration unit, be mainly the smog demonstration unit power supply is provided, described smog demonstration unit is as the input end of signal processing unit, described signal processing unit is handled amplification with the signal that receives, and described warning output unit is the output terminal of signal processing unit; It is characterized in that: described smog demonstration unit comprises a closed container, luminotron, light receiving tube, and described luminotron, light receiving tube are installed in has at least one side to have in the closed container of air vent.
2, power supply unit according to claim 1, it is characterized in that: described power supply unit comprises DC5V voltage, switch and a resistance, described switch is connected with positive source, resistance is connected with power cathode, and the other end of switch, resistance is connected with luminotron respectively.
3, warning output unit according to claim 1 is characterized in that: described warning output unit comprises luminotron, hummer.
4, DC5V voltage according to claim 2, it is characterized in that described DC5V voltage can be that source of stable pressure or accumulator provide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201708671U CN201331853Y (en) | 2008-12-29 | 2008-12-29 | Demonstration instrument for smoke-type fire alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201708671U CN201331853Y (en) | 2008-12-29 | 2008-12-29 | Demonstration instrument for smoke-type fire alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331853Y true CN201331853Y (en) | 2009-10-21 |
Family
ID=41225235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201708671U Expired - Lifetime CN201331853Y (en) | 2008-12-29 | 2008-12-29 | Demonstration instrument for smoke-type fire alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201331853Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325295A (en) * | 2013-07-10 | 2013-09-25 | 无锡商业职业技术学院 | Practical training equipment for automatically controlling smoke discharge |
| CN110910732A (en) * | 2019-12-19 | 2020-03-24 | 北京中诚博睿教育科技有限公司 | Children intelligence-developing teaching aid with electronic smoke alarm |
-
2008
- 2008-12-29 CN CNU2008201708671U patent/CN201331853Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325295A (en) * | 2013-07-10 | 2013-09-25 | 无锡商业职业技术学院 | Practical training equipment for automatically controlling smoke discharge |
| CN110910732A (en) * | 2019-12-19 | 2020-03-24 | 北京中诚博睿教育科技有限公司 | Children intelligence-developing teaching aid with electronic smoke alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |