CN105632077A - Smoke alarm - Google Patents
Smoke alarm Download PDFInfo
- Publication number
- CN105632077A CN105632077A CN201410575473.4A CN201410575473A CN105632077A CN 105632077 A CN105632077 A CN 105632077A CN 201410575473 A CN201410575473 A CN 201410575473A CN 105632077 A CN105632077 A CN 105632077A
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- China
- Prior art keywords
- smoke
- smoke alarm
- sensor
- chip microcomputer
- alarm
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Abstract
The invention relates to the technical field of fire control, and specifically relates to a smoke alarm. The smoke alarm is composed of a power supply, a smoke sensor, an AD acquisition circuit, a key control, a master control single-chip microcomputer and an output circuit, wherein the smoke sensor is connected with the AD acquisition circuit, and the power supply, the AD acquisition circuit, the key control and the output circuit are connected with the master control single-chip microcomputer. According to the invention, the sensor and the single-chip microcomputer are used as the core devices of the smoke alarm, and the sensor and the single-chip microcomputer can work together with other devices to achieve functions like acousto-optic alarm, automatic smoke exhaust and ventilation, and fire extinguishing. The smoke alarm has a simple structure, is economical and practical, and is applicable to small-range smoke detection. Moreover, the smoke alarm is of moderate sensitivity, and is advantaged in that the smoke alarm has good response and recovery characteristics and high long-term working stability and repeatability and is not easily affected by environment and temperature and humidity.
Description
Technical field
The present invention relates to technical field of fire control, be specifically related to a kind of smoke alarm.
Background technology
Along with society and expanding economy, fireproofing is more and more important, but many research and development domestic at present all lay particular emphasis on the fire alarm in large-scale place, and the alarm device being applicable to small sized applications on the contrary is rarely found.
Summary of the invention
It is contemplated that propose the domestic smoke alarms of a kind of structurally simple, economical practicality.
Technical program of the present invention lies in:
A kind of smoke alarm, by power supply, Smoke Sensor, AD Acquisition Circuit, forms by key control, main control singlechip and output circuit; Wherein, Smoke Sensor is connected with AD Acquisition Circuit, power supply, AD Acquisition Circuit, all forms with main control singlechip by key control and output circuit.
Preferably, described main control singlechip is STC89C52 type single-chip microcomputer.
Preferably, described Smoke Sensor model is MQ-2 sensor.
Or preferably, described AD Acquisition Circuit adopts ADC0832.
Or preferably, described output circuit is divided into display circuit and warning circuit.
It is highly preferred that described warning circuit is connected with single-chip microcomputer P3.6 port by transistor base one resistance of series winding.
The method have technical effect that:
The core devices that meter of the present invention designs using sensor and single-chip microcomputer as smoke alarm, coordinate other device can realize the functions such as sound and light alarm, automatic smoke exhausting ventilation and fire-fighting fire extinguishing, the present invention plants structurally simple, economical practicality, it is adaptable to the Smoke Detection of little scope. Sensitivity is moderate, has Response and restoring characteritics good, long-term working stability, repeatability, is susceptible to the advantage such as environmental effect and temperature resistance humidity impact.
Accompanying drawing explanation
Fig. 1 is the structure connection diagram of a kind of Smoke Sensor of the present invention.
Detailed description of the invention
A kind of smoke alarm, by power supply, Smoke Sensor, AD Acquisition Circuit, forms by key control, main control singlechip and output circuit; Wherein, Smoke Sensor is connected with AD Acquisition Circuit, power supply, AD Acquisition Circuit, all forms with main control singlechip by key control and output circuit. Wherein, described main control singlechip is STC89C52 type single-chip microcomputer. Smoke Sensor model is MQ-2 sensor. AD Acquisition Circuit adopts ADC0832. Output circuit is divided into display circuit and warning circuit. Warning circuit is connected with single-chip microcomputer P3.6 port by transistor base one resistance of series winding.
Smoke Detection adopts MQ-2 sensor. The magnitude of voltage under various smokescope is can be obtained by after ADC0832 gathers. Thus setting out desirable smog intensity alarming value.
The present invention in use, first to preheat to sensor, because MQ-2 type semiconductor resistance-type Smoke Sensor is after no power deposits a period of time, when being once again powered up, sensor can not normal acquisition smog information immediately, it is necessary to a period of time preheats.
Claims (6)
1. a smoke alarm, it is characterised in that: by power supply, Smoke Sensor, AD Acquisition Circuit, form by key control, main control singlechip and output circuit; Wherein, Smoke Sensor is connected with AD Acquisition Circuit, power supply, AD Acquisition Circuit, all forms with main control singlechip by key control and output circuit.
2. such as claim 1 smoke alarm, it is characterised in that: described main control singlechip is STC89C52 type single-chip microcomputer.
3. such as claim 1 smoke alarm, it is characterised in that: described Smoke Sensor model is MQ-2 sensor.
4. such as claim 1 smoke alarm, it is characterised in that: described AD Acquisition Circuit adopts ADC0832.
5. such as claim 1 smoke alarm, it is characterised in that: described output circuit is divided into display circuit and warning circuit.
6. such as claim 5 smoke alarm, it is characterised in that: described warning circuit is connected with single-chip microcomputer P3.6 port by transistor base one resistance of series winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410575473.4A CN105632077A (en) | 2014-10-25 | 2014-10-25 | Smoke alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410575473.4A CN105632077A (en) | 2014-10-25 | 2014-10-25 | Smoke alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105632077A true CN105632077A (en) | 2016-06-01 |
Family
ID=56046952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410575473.4A Pending CN105632077A (en) | 2014-10-25 | 2014-10-25 | Smoke alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105632077A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109816920A (en) * | 2017-11-18 | 2019-05-28 | 长沙鲁维湘机电科技有限公司 | A kind of smoke alarm using single-chip microcontroller |
-
2014
- 2014-10-25 CN CN201410575473.4A patent/CN105632077A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109816920A (en) * | 2017-11-18 | 2019-05-28 | 长沙鲁维湘机电科技有限公司 | A kind of smoke alarm using single-chip microcontroller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |