CN103021116A - Fire alarm sensing circuit applied to air conditioner and method of fire alarm sensing circuit - Google Patents
Fire alarm sensing circuit applied to air conditioner and method of fire alarm sensing circuit Download PDFInfo
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- CN103021116A CN103021116A CN2011102794257A CN201110279425A CN103021116A CN 103021116 A CN103021116 A CN 103021116A CN 2011102794257 A CN2011102794257 A CN 2011102794257A CN 201110279425 A CN201110279425 A CN 201110279425A CN 103021116 A CN103021116 A CN 103021116A
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- air conditioner
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Abstract
The invention discloses a fire alarm sensing circuit applied to an air conditioner and a method of the fire alarm sensing circuit. A fire alarm sensor is added at the control circuit of an indoor unit and an outdoor unit of the air conditioner to carry out the early warning monitoring by aiming at the running state and the surrounding environment of the air conditioner in real time. When the alarm occurs, the emergency treatment can be triggered timely and an alarm signal is sent to notify users, so as to establish a comprehensive and reliable fire alarm mechanism to solve the hidden dangers of lines resulted from aging or voltage instability. The fire alarm sensing circuit comprises an MCU control chip and uses the fire alarm sensor with 5v power supply, and an alarm feedback signal pin of the fire alarm sensor is connected to a positive voltage reset pin or a general IO port of the MCU control chip; and an alarm output signal pin of the fire alarm sensor is connected at a buzzer. In the existing control system, a fire alarm system which aims at the self-running state and the external environment of the air conditioner is realized.
Description
Technical field
The present invention relates to a kind of sensing circuit and control method thereof of utilizer electrical appliance fire protection warning, belong to household appliance technical field.
Background technology
Existing household electrical appliance such as the air conditioner that uses, temporary transient not enabled is for the fire protection warning device of air conditioner self-operating state and indoor or outdoors environment.
Because the raising of quality of life, air conditioner can be in running status usually for a long time, so circuit devcie exists to a certain extent problem of aging.During peak of power consumption, be prone to spread of voltage in addition, electrical equipment is breakdown, thereby initiation fire.Namely for the air conditioner of installing and using the long period, might cause the fire secrets such as circuit is smoldered, naked light burning.
For this type of safe handling problem, the air conditioner control circuit that designs at present and produce lacks corresponding early warning and warning processing means, thereby environment for use is on every side caused larger potential safety hazard.
In view of this, the special present patent application that proposes.
Summary of the invention
Fire protection warning sensing circuit and the method thereof that is applied to air conditioner of the present invention, its purpose is to solve the problem of above-mentioned prior art existence and sets up a fire protection warning sensor at the control circuit of air conditioner room unit, off-premises station, to carry out early warning monitoring for conditioners running conditions and surrounding environment in real time.When alert occurs when, can in time trigger emergency processing, send alerting signal notifying the user, thereby set up comprehensively, reliable fire protection warning mechanism, solve circuit because of the potential safety hazard that wears out or spread of voltage causes.
For achieving the above object, the described fire protection warning sensing circuit that is applied to air conditioner mainly includes:
One MCU control chip,
Adopt the fire protection warning sensor of 5V power supply, its warning feedback signal pin is connected in positive voltage reset pin or the universal I/O port (for the MCU without the positive voltage reset function) of MCU control chip;
The alarm output signal pin of fire protection warning sensor is connected in hummer.
Such as above-mentioned basic scheme feature, in existing control system, realize for the fire protection alarm system between air conditioner self-operating state and the external environment condition.
When alert occured, the fire protection warning sensor was carried a rising edge high level signal to the MCU control chip, so that air-conditioner system resets or cuts off general supply, stops the air conditioner operation, further developed with fundamentally stoping the condition of a fire.
Simultaneously, the fire protection warning sensor to drive its startup, is namely put out a fire external by piping with reminding user or surrounding population to the hummer output alarm signal in time.
Send the accuracy of rising edge high level signal and prevent that error code operation or the signal reception of MCU control chip are unstable for improving the fire protection warning sensor, the improvement project that can take is:
The triode of between MCU control chip and fire protection warning sensor, connecting, the base stage of the warning feedback signal pin connecting triode of fire protection warning sensor, the collector of triode connects the positive voltage reset pin of MCU control chip.
If user or surrounding population are the deaf-mutes, just can't listen and get the tweeting sound that hummer sends, refinement scheme is further, the alarm output signal pin of fire protection warning sensor is connected in light emitting diode.
Based on design concept of the present invention, and the use of above-mentioned fire protection warning sensing circuit, the present invention has also realized following fire protection warning method:
When alert occured, the fire protection warning sensor was carried a rising edge high level signal to the positive voltage reset pin of MCU control chip, so that air-conditioner system resets;
Or to carrying a rising edge high level signal without the MCU universal I/O port of positive voltage reset function, to cut off the air conditioner general supply, stop the air conditioner operation.
Comparatively preferably the alerting signal way of output is, the fire protection warning sensor starts to drive hummer to the hummer output alarm signal, and the tweeting sound that namely sends by hummer is reported to the police.
Also can be that the fire protection warning sensor, is reported to the police by the flicker of light emitting diode with the conducting light emitting diode to the light emitting diode output alarm signal.
As above content, the present invention is applied to the fire protection warning sensing circuit of air conditioner and advantage that method has is, structure and control mode are comparatively simple, under the prerequisite of less increase production cost, effectively realize the early warning monitoring function for air conditioner operation conditions and surrounding environment, safety coefficient is higher.
Description of drawings
Now in conjunction with following accompanying drawing the present invention is done further explanation and explanation.
Fig. 1 is the described fire protection warning sensing circuit synoptic diagram that is installed on indoor set;
As shown in Figure 1, fire protection warning sensor 1, hummer 2, triode 3, light emitting diode 4.
Embodiment
Fire protection warning sensor 1 adopts the 5V power supply, and the very little and running current of its power consumption is less than 2 milliamperes.
Fire protection warning sensor 1 has 4 functional pins, is followed successively by from top to bottom power pins, warning feedback signal pin, alerting signal output pin, grounding pin.Wherein,
What warning feedback signal pin was exported is the rising edge high level signal; the base stage of its connecting triode 3; the collector of triode 3 connects the positive voltage reset pin pReset of MCU control chip or without the MCU universal I/O port of positive voltage reset function so that indoor set system resets again or with the general supply of air conditioner cut off, protection complete machine and surrounding environment.
The alerting signal output pin is connected in hummer 2 and light emitting diode 4, providing hummer 2 to pipe or LED flash carries out warning reminding, thereby provides alarm for blind person and deaf-mute simultaneously.
The fire protection warning method that is applied to the air conditioner realization is that when alert occured, fire protection warning sensor 1 was carried a rising edge high level signal to the positive voltage reset pin pReset of MCU control chip, so that air-conditioner system resets;
Or to carrying a rising edge high level signal without the MCU universal I/O port of positive voltage reset function, to cut off the air conditioner general supply, stop the air conditioner operation.
Fire protection warning sensor 1 starts to drive hummer 2 to hummer 2 output alarm signals.
Fire protection warning sensor 1 is to light emitting diode 4 output alarm signals, with conducting light emitting diode 4.
More than being given by reference to the accompanying drawings embodiment, only is the preferred version of realizing purpose of design of the present invention.For one of ordinary skill in the art, can take a hint accordingly, and direct derivation goes out to meet other replacement of same design design, also should belong to rights protection scope of the present invention.
Claims (6)
1. fire protection warning sensing circuit that is applied to air conditioner, include the MCU control chip, it is characterized in that: one adopts the fire protection warning sensor (1) of 5V power supply, and its warning feedback signal pin is connected in the positive voltage reset pin (pReset) of MCU control chip;
The alarm output signal pin of fire protection warning sensor (1) is connected in hummer (2).
2. the fire protection warning sensing circuit that is applied to air conditioner according to claim 1, it is characterized in that: the triode (3) of between MCU control chip and fire protection warning sensor (1), connecting, the base stage of the warning feedback signal pin connecting triode (3) of fire protection warning sensor (1), the collector of triode (3) connects the positive voltage reset pin (pReset) of MCU control chip.
3. the fire protection warning sensing circuit that is applied to air conditioner according to claim 1 and 2, it is characterized in that: the alarm output signal pin of fire protection warning sensor (1) is connected in light emitting diode (4).
4. the fire protection warning method that realizes to the 3 described fire protection warning sensing circuits that are applied to air conditioner according to claim 1, it is characterized in that: when alert occurs, fire protection warning sensor (1) is carried a rising edge high level signal to the positive voltage reset pin (pReset) of MCU control chip, so that air-conditioner system resets;
Or to carrying a rising edge high level signal without the MCU universal I/O port of positive voltage reset function, to cut off the air conditioner general supply, stop the air conditioner operation.
5. the fire protection warning method that is applied to air conditioner according to claim 4 is characterized in that: fire protection warning sensor (1) starts to drive hummer (2) to hummer (2) output alarm signal.
6. the fire protection warning method that is applied to air conditioner according to claim 5, it is characterized in that: fire protection warning sensor (1) is to light emitting diode (4) output alarm signal, with conducting light emitting diode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279425.7A CN103021116B (en) | 2011-09-20 | 2011-09-20 | Be applied to fire protection warning sensing circuit and the method thereof of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279425.7A CN103021116B (en) | 2011-09-20 | 2011-09-20 | Be applied to fire protection warning sensing circuit and the method thereof of air conditioner |
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| Publication Number | Publication Date |
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| CN103021116A true CN103021116A (en) | 2013-04-03 |
| CN103021116B CN103021116B (en) | 2015-11-18 |
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| CN201110279425.7A Expired - Fee Related CN103021116B (en) | 2011-09-20 | 2011-09-20 | Be applied to fire protection warning sensing circuit and the method thereof of air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610402A (en) * | 2017-08-14 | 2018-01-19 | 青岛海尔空调器有限总公司 | Fire alarm method and system based on air conditioner |
| CN109164347A (en) * | 2018-07-23 | 2019-01-08 | 珠海格力电器股份有限公司 | A kind of inversion-prevention detection circuit, air conditioner and detection method |
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| US20080049364A1 (en) * | 2006-03-30 | 2008-02-28 | Steve Campolo | Leakage current monitor |
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| CN201569497U (en) * | 2009-11-30 | 2010-09-01 | 上海第二工业大学 | Control system for temperature measurement and alarm |
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|---|---|---|---|---|
| CN86201285U (en) * | 1986-03-14 | 1987-02-18 | 丁志津 | Improved protection warner for enclosed compression engine winding |
| JPH05187683A (en) * | 1992-01-08 | 1993-07-27 | Mitsubishi Electric Corp | Controller for air conditioner |
| CN2153008Y (en) * | 1993-02-24 | 1994-01-12 | 徐昭良 | Intelligent warming source for air-conditioner |
| CN2246265Y (en) * | 1996-02-15 | 1997-01-29 | 台湾得意温控科技股份有限公司 | Air conditioning device with function of fire alarming |
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| US20080049364A1 (en) * | 2006-03-30 | 2008-02-28 | Steve Campolo | Leakage current monitor |
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| CN201569497U (en) * | 2009-11-30 | 2010-09-01 | 上海第二工业大学 | Control system for temperature measurement and alarm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610402A (en) * | 2017-08-14 | 2018-01-19 | 青岛海尔空调器有限总公司 | Fire alarm method and system based on air conditioner |
| CN109164347A (en) * | 2018-07-23 | 2019-01-08 | 珠海格力电器股份有限公司 | A kind of inversion-prevention detection circuit, air conditioner and detection method |
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| Publication number | Publication date |
|---|---|
| CN103021116B (en) | 2015-11-18 |
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