Household apparatus for detecting, controlling and automatically alarming CO, and working method thereof
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An automatic alarm device, household technology, applied in the direction of alarms, instruments, electrical components, etc., can solve problems such as loss of function and inability to inform users of extremely dangerous concentrations
Inactive Publication Date: 2009-05-20
SHANDONG UNIV
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However, its detection has only one level, and it cannot tell the user how dangerous the specific concentration is and how to deal with it
Moreover
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Embodiment 1
[0027] Embodiments of the device of the present invention are figure 1 -3, including single-chip microcomputer 1, CO gas sensor 2, level conversion circuit 3, comparator circuit 4 and power supply circuit 5, it is characterized in that the level conversion circuit 3 is connected behind the CO gas sensor 2 to obtain different representations of CO gas For the voltage signal of the concentration value, the level conversion circuit 3 is electrically connected to the comparator circuit 4, and the output terminal of the comparator circuit 4 is connected to the warning light 9, and is connected to the single-chip microcomputer 1 through the IO port of the single-chip microcomputer 1 at the same time; It is connected with the control key of the exhaust fan 6, the telephone automatic dialing device 7 and the telephone hands-free circuit 8, so as to realize the timely detection, control, disposal and alarm of CO gas; the DC output terminal of the power supply circuit 5 is connected to t...
Embodiment 2
[0032] The working method embodiment of the device of the present invention is for example Figure 4 As shown, the steps are as follows:
[0033] ① start;
[0034] ②Single-chip microcomputer 1 detects the IO port, and judges whether the level at the IO port is high, too high, or needs to be evacuated. If yes, go to the next step, otherwise go to step ②;
[0035] ③When the level is high, the voice prompts that the CO concentration is high, and the exhaust fan 6 is turned off; when the level is too high, the voice prompts that the CO concentration is high, and the exhaust fan 6 is turned on; when it is necessary to evacuate, the voice prompts that the concentration is extremely high, please immediately Evacuate, turn on the exhaust fan 6;
[0037] ⑤ Initialize the recognizer and wait for the recognition result;
[0038] ⑥ Determine whether there is a result, if there is a result, go to the next step, otherwise go...
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Abstract
The invention relates to a household CO detection, control and automatic alarm device which belongs to household harmful gas detection and processing technology. The device comprises a singlechip, a CO gas sensor, a level switching circuit, a comparator circuit and a power supply source circuit, wherein the CO gas sensor is connected with the level switching circuit behind to obtain voltage signals representing different concentration values of CO gas; the level switching circuit is connected with the comparator circuit; the output of the comparator circuit is connected with an alarm light and is also connected with the singlechip through an IO port of the singlechip; the singlechip is connected with an exhaust fan, a telephone automatic dialing device and a control key of a telephone hand-free circuit respectively through the IO port so as to realize timely detection, control, processing and alarm of CO gas; and the power supply source circuit is connected with all the circuits to provide power supply for the entire device. The household CO detection, control and automatic alarm device has safe and convenient use, and ensures that the detection and control of household CO concentration have more intelligent functions; moreover, the device can automatically ask for help when CO concentration exceeds the provided standard and can start the fan to release gas while sending out an alarm.
Description
(1) Technical field: [0001] The invention relates to the detection and processing technology of household harmful gas, in particular to a household CO detection, control and automatic alarm device and its working method. (two) background technology: [0002] At present, some CO concentration detection devices already exist, and the detection of CO concentration is better realized by using sensors. But these devices still have many shortcomings and deficiencies. For example: the function is simple, only detection and simple alarm function, unable to prompt the specific degree of danger; only passive detection, unable to make corresponding control; only remind the on-site personnel, when the scene is chaotic or there is no one on site down, the device will lose its function. Publication number is CN2053586U, the Chinese patent that name is called " device for preventing carbon monoxide poisoning of air-conditioned automobile " just discloses a kind of carbon monoxide warning...
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