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Fire alarm sensing circuit applied to air conditioner and method of fire alarm sensing circuit

A technology of sensing circuit and air conditioner, which is applied in the direction of electric fire alarm, application, household heating, etc., to achieve the effect of simple and easy structure and control method and high safety factor

Inactive Publication Date: 2013-04-03
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When an alarm occurs, it can trigger emergency treatment in time and send out an alarm signal to notify the user, thereby establishing a comprehensive and reliable fire alarm mechanism to solve potential safety hazards caused by aging lines or unstable voltage

Method used

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  • Fire alarm sensing circuit applied to air conditioner and method of fire alarm sensing circuit

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Experimental program
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Effect test

Embodiment 1

[0026] Example 1, such as figure 1 As shown, the fire alarm sensing circuit provided by this embodiment is applied to the side of the indoor unit of the air conditioner, and mainly includes an MCU control chip.

[0027] The fire alarm sensor 1 adopts 5V power supply, its power consumption is very small and its normal working current is less than 2 mA.

[0028] The fire alarm sensor 1 has four function pins, which are power supply pins, alarm feedback signal pins, alarm signal output pins, and ground pins from top to bottom. in,

[0029] The output of the alarm feedback signal pin is a rising edge high-level signal, which is connected to the base of the transistor 3, and the collector of the transistor 3 is connected to the positive voltage reset pin pReset of the MCU control chip or the general IO port of the MCU without positive voltage reset function , so as to reset the indoor unit system or cut off the main power supply of the air conditioner to protect the whole unit an...

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PUM

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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 [0001] The invention relates to a sensor circuit and a control method for applying fire alarms of household appliances, which belong to the field of household appliances. Background technique [0002] Existing household electrical appliances such as air conditioners have not been activated for the time being with fire alarm devices for the operating state of the air conditioner itself and the indoor or outdoor environment. [0003] Due to the improvement of the quality of life, the air conditioner is usually in the running state for a long time, so there is a certain degree of aging problem in the circuit components. In addition, during the peak period of electricity consumption, voltage instability is prone to occur, and electrical appliances are broken down, causing fires. That is, for air conditioners that have been installed and used for a long time, it may cause fire hazards such as smoke from the line and burning of open flames. [0004] For this kind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/06F24F11/02
Inventor 杨晓慧
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD