CN202230570U - Fire alarm sensing circuit applied to air conditioner - Google Patents
Fire alarm sensing circuit applied to air conditioner Download PDFInfo
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- CN202230570U CN202230570U CN2011203524602U CN201120352460U CN202230570U CN 202230570 U CN202230570 U CN 202230570U CN 2011203524602 U CN2011203524602 U CN 2011203524602U CN 201120352460 U CN201120352460 U CN 201120352460U CN 202230570 U CN202230570 U CN 202230570U
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- fire alarm
- air conditioner
- alarm
- fire
- sensing circuit
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- 206010011878 Deafness Diseases 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000003637 basic solution Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
Be applied to fire alarm sensing circuit of air conditioner, add a fire alarm sensor at the control circuit of air conditioner indoor unit, off-premises station to carry out the early warning control to air conditioner running state and surrounding environment in real time. When an alarm occurs, emergency treatment can be triggered in time, and an alarm signal is sent to inform a user, so that a comprehensive and reliable fire alarm mechanism is established, and potential safety hazards caused by aging or unstable voltage of a circuit are solved. The fire alarm sensing circuit comprises an MCU control chip, a fire alarm sensor adopting 5V power supply, and an alarm feedback signal pin of the fire alarm sensing circuit is connected with a positive voltage reset pin or a general IO port of the MCU control chip; and the alarm output signal pin of the fire alarm sensor is connected to the buzzer. A fire-fighting alarm system aiming at the condition between the running state of the air conditioner and the external environment is realized in the existing control system.
Description
Technical Field
The utility model relates to an use domestic appliance fire alarm's sensing circuit belongs to the domestic appliance field.
Background
Currently used household appliances such as air conditioners temporarily do not have fire alarm devices for the operating state of the air conditioner itself and the indoor or outdoor environment.
Since the air conditioner is generally operated for a long time due to the improvement of quality of life, there is a problem in that circuit devices are deteriorated to some extent. In addition, voltage instability and electric appliance breakdown easily occur during the peak period of electricity utilization, so that fire is caused. That is, in the case of an air conditioner installed and used for a long time, fire risks such as smoke generation of a line and open fire combustion may occur.
For the problems of safe use, the control circuit of the air conditioner designed and produced at present lacks corresponding early warning and alarm processing means, thereby causing great potential safety hazard to the surrounding use environment.
In view of this, the present patent application is specifically proposed.
SUMMERY OF THE UTILITY MODEL
Be applied to fire alarm sensing circuit of air conditioner, its aim at solve the problem that above-mentioned prior art exists and add a fire alarm sensor at the control circuit of air conditioner indoor unit, off-premises station to carry out early warning control to air conditioner running state and surrounding environment in real time. When an alarm occurs, emergency treatment can be triggered in time, and an alarm signal is sent to inform a user, so that a comprehensive and reliable fire alarm mechanism is established, and potential safety hazards caused by aging or unstable voltage of a circuit are solved.
In order to achieve the above design purpose, the fire alarm sensing circuit applied to the air conditioner mainly comprises:
an MCU control chip, a microprocessor control unit,
a 5V power supply fire alarm sensor is adopted, and an alarm feedback signal pin of the fire alarm sensor is connected with a positive voltage reset pin of an MCU control chip or a universal IO port (aiming at an MCU without a positive voltage reset function);
and the alarm output signal pin of the fire alarm sensor is connected to the buzzer.
As in the above-mentioned basic solution features, a fire alarm system for the air conditioner between its own operating state and the external environment is implemented in the existing control system.
When an alarm occurs, the fire alarm sensor transmits a rising edge high level signal to the MCU control chip so as to reset or cut off a main power supply of the air conditioner system and stop the operation of the air conditioner, thereby fundamentally preventing the further development of the fire.
Meanwhile, the fire alarm sensor outputs an alarm signal to the buzzer to drive the buzzer to start, namely, the fire alarm sensor reminds a user or surrounding people to extinguish fire in time through buzzing.
In order to improve the accuracy of the fire alarm sensor for sending a rising edge high level signal and prevent the error code operation or unstable signal receiving of the MCU control chip, the improvement scheme can be adopted as follows:
the triode is connected between the MCU control chip and the fire alarm sensor in series, an alarm feedback signal pin of the fire alarm sensor is connected with a base electrode of the triode, and a collector electrode of the triode is connected with a positive voltage reset pin of the MCU control chip.
If the user or the surrounding people are deaf-mute, the user cannot hear the sound emitted by the buzzer, and the scheme is further refined in that an alarm output signal pin of the fire-fighting alarm sensor is connected with a light-emitting diode.
As above, the utility model discloses be applied to fire control warning sensing circuit of air conditioner has the advantage that, structure and control mode are comparatively simple and easy, under the prerequisite that increases manufacturing cost less, realize effectively to the early warning monitoring function of air conditioner operation conditions and surrounding environment, factor of safety is higher.
Drawings
The invention will now be further explained and illustrated with reference to the following figures.
FIG. 1 is a schematic diagram of the fire alarm sensing circuit installed in the indoor unit;
as shown in fig. 1, the fire alarm sensor 1, the buzzer 2, the triode 3 and the light emitting diode 4.
Detailed Description
The fire alarm sensor 1 is powered by 5V, the power consumption is low, and the normal working current is less than 2 milliamperes.
the alarm feedback signal pin outputs a rising edge high level signal which is connected with the base electrode of the triode 3, and the collector electrode of the triode 3 is connected with a positive voltage reset pin pReset of the MCU control chip or an MCU general IO port without a positive voltage reset function, so that the indoor unit system is reset again, or the main power supply of the air conditioner is cut off, and the whole machine and the surrounding environment are protected.
The alarm signal output pin is connected with the buzzer 2 and the light-emitting diode 4 to provide alarm reminding for the buzzer 2 to sound or the light-emitting diode to flash, so that alarm reminding is provided for the blind and the deaf-mute at the same time.
The fire alarm method applied to the air conditioner is that when an alarm occurs, the fire alarm sensor 1 transmits a rising edge high level signal to a positive voltage reset pin pReset of an MCU control chip so as to reset an air conditioner system;
or a rising edge high level signal is transmitted to the MCU general IO port without the positive voltage reset function so as to cut off the main power supply of the air conditioner and stop the operation of the air conditioner.
The fire alarm sensor 1 outputs an alarm signal to the buzzer 2 to drive the buzzer 2 to start.
The fire alarm sensor 1 outputs an alarm signal to the light emitting diode 4 to turn on the light emitting diode 4.
Claims (3)
1. The utility model provides a fire control warning sensing circuit for air conditioner, including MCU control chip, its characterized in that: a fire alarm sensor (1) adopting 5V power supply, wherein an alarm feedback signal pin of the fire alarm sensor is connected with a positive voltage reset pin (pReset) of the MCU control chip;
and an alarm output signal pin of the fire alarm sensor (1) is connected to the buzzer (2).
2. A fire alarm sensing circuit for an air conditioner according to claim 1, wherein: triode (3) is connected in series between MCU control chip and fire alarm sensor (1), and the base of triode (3) is connected to the warning feedback signal pin of fire alarm sensor (1), and the positive voltage reset pin (pReset) of MCU control chip is connected to the collecting electrode of triode (3).
3. A fire alarm sensing circuit applied to an air conditioner according to claim 1 or 2, wherein: and an alarm output signal pin of the fire alarm sensor (1) is connected to the light emitting diode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203524602U CN202230570U (en) | 2011-09-20 | 2011-09-20 | Fire alarm sensing circuit applied to air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203524602U CN202230570U (en) | 2011-09-20 | 2011-09-20 | Fire alarm sensing circuit applied to air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230570U true CN202230570U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203524602U Expired - Fee Related CN202230570U (en) | 2011-09-20 | 2011-09-20 | Fire alarm sensing circuit applied to air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202230570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021116A (en) * | 2011-09-20 | 2013-04-03 | 海信（山东）空调有限公司 | Fire alarm sensing circuit applied to air conditioner and method of fire alarm sensing circuit |
-
2011
- 2011-09-20 CN CN2011203524602U patent/CN202230570U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021116A (en) * | 2011-09-20 | 2013-04-03 | 海信（山东）空调有限公司 | Fire alarm sensing circuit applied to air conditioner and method of fire alarm sensing circuit |
| CN103021116B (en) * | 2011-09-20 | 2015-11-18 | 海信（山东）空调有限公司 | Be applied to fire protection warning sensing circuit and the method thereof of air conditioner |
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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 |
Granted publication date: 20120523 Termination date: 20170920 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |