CN202993473U - Indoor air quality monitoring and controlling device - Google Patents
Indoor air quality monitoring and controlling device Download PDFInfo
- Publication number
- CN202993473U CN202993473U CN2012207200170U CN201220720017U CN202993473U CN 202993473 U CN202993473 U CN 202993473U CN 2012207200170 U CN2012207200170 U CN 2012207200170U CN 201220720017 U CN201220720017 U CN 201220720017U CN 202993473 U CN202993473 U CN 202993473U
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- China
- Prior art keywords
- circuit
- air quality
- sensor
- indoor air
- chip microcomputer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The utility model discloses an indoor air quality monitoring and controlling device which comprises a single chip microcomputer, a ventilating fan, a CO<2> sensor, a gas sensor, a keyboard interface circuit, a liquid crystal display circuit, a status indicating circuit, an alarm circuit and a relay control circuit. Input ends of the single chip microcomputer are respectively connected to the CO<2> sensor, the gas sensor and the keyboard interface circuit, output ends of the single chip microcomputer are respectively connected to an input end of the liquid crystal display module, an input end of the alarm circuit, an input end of the status indicating circuit and an input end of the relay control circuit, and a control end of the ventilating fan is connected with an output end of a relay. The indoor air quality monitoring and controlling device has the advantages that the indoor air quality monitoring and controlling device is convenient to use, simple and reliable in structure and high in measurement precision, and has functions of monitoring harmful indoor gas in real time, monitoring and controlling the indoor air quality and the like.
Description
Technical field
The utility model belongs to the technology of instrument and meter field, be specifically related to a kind of with the indoor harmful gas Real Time Monitoring, room air CO
2The device that content detection, demonstration, warning and air quality are controlled automatically.
Background technology
At present, air pollutants such as carbon monoxide, the pernicious gases such as carbon dioxide are generally acknowledged by people the harm that human body health causes.Liquefied gas in family simultaneously, natural gas, the contingencies such as gas leak also happen occasionally.Along with people's quality of life improves, healthy, safe living environment are had higher requirement, air quality more and more causes people's concern, the intelligent apparatus that market demand is a kind of can be monitored indoor harmful gas in real time and air quality is controlled.
The utility model content
The purpose of this utility model is to provide a kind of easy to use, and is simple and reliable for structure, and certainty of measurement is higher, has the observing and controlling device processed of the functions such as indoor harmful gas Real Time Monitoring, air quality monitoring and control.
The technical solution adopted in the utility model is: this indoor air quality monitoring and control device comprise single-chip microcomputer, scavenger fan, CO
2Sensor, gas sensor, keyboard interface circuit, LCD MODULE, condition indication circuit, warning circuit and control relay circuit, the input of described single-chip microcomputer is connected to respectively CO
2Sensor, gas sensor and keyboard interface circuit, the output of single-chip microcomputer is connected to respectively the input of LCD MODULE, warning circuit, condition indication circuit and control relay circuit, and the control end of described scavenger fan is connected with the output of relay.
In technique scheme, described single-chip microcomputer adopts the STC89C52 chip, and described LCD MODULE adopts LCD12864.
In technique scheme, described CO
2Sensor adopts infrared carbon dioxide sensor assembly MH-Z15, and described gas sensor adopts semiconductor gas sensor MQ-5.
In technique scheme, described warning circuit comprises buzzer and transistor drive circuit, and described condition indication circuit comprises light emitting diode and current-limiting resistance.
Technique effect of the present utility model is: the utility model can be to pernicious gas in room air and CO
2Content detects in real time, as room air pernicious gas and CO
2Content is higher than when setting value, and warning circuit produces alarm signal, and prompting is windowed, and starts simultaneously scavenger fan and ventilates.Can prevent liquefied gas to the indoor harmful gas Real Time Monitoring, natural gas, the contingencies such as gas leak occur; Air quality is controlled automatically, improved IAQ.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is general structure block diagram of the present utility model;
Fig. 2 is circuit diagram of the present utility model;
Fig. 3 is gas sensor fundamental diagram of the present utility model.
The specific embodiment
Referring to Fig. 1, whole system is by single-chip microcomputer, scavenger fan, CO
2Sensor, gas sensor, keyboard interface circuit, LCD MODULE, condition indication circuit, warning circuit and control relay circuit form.The input of described single-chip microcomputer is connected to respectively CO
2Sensor, gas sensor and keyboard interface circuit, the output of single-chip microcomputer is connected to respectively the input of LCD MODULE, warning circuit, condition indication circuit and control relay circuit, and the control end of described scavenger fan is connected with the output of corresponding relay.
Fig. 2 is circuit diagram of the present utility model, the P0 mouth of single-chip microcomputer meets eight data wire DB0-DB7 of LCD12864, pin P2.0, P2.1 and P2.2 select control end, read/write to select control end and read-write to enable control end as the data/commands of LCD12864 respectively, pin P2.3, P2.4 select the signal controlling end as sheet, CO in the LCD12864 display room
2The information such as ppm value, room air pernicious gas ppm value;
Pin P1.4 connects the control end of scavenger fan control relay, controls its start and stop by single-chip microcomputer output switch amount;
Pin P1.5, P1.6 connect condition indication circuit, are used to refer to respectively pernicious gas and CO
2The duty that content overproof is reported to the police;
Pin P1.7 output circuit taking alarm is as indoor harmful gas or CO
2Content drives buzzer warning higher than when setting value;
Pin P1.0, P1.1, P1.2 and P1.3 connect keyboard interface circuit, and the system that realizes starts, stops, cancelling the operations such as warning, parameter setting and modification;
Pin P2.5 meets CO
2The output of sensor, adopt infrared carbon dioxide sensor assembly MH-Z15, MH-Z15 combines closely the infrared absorption gas detection technique of maturation and accurate light path design, superior circuit design, the universal infrared gas sensor of producing, it utilizes the CO of NDIR principle to existing in air
2Survey, have well selectively, the no oxygen dependence, the life-span is long; Have simultaneously numeral output and aanalogvoltage output, can immediately obtain current indoor air quality, be widely used in indoor air quality monitoring.
The people is oxygen intake constantly, gives off carbon dioxide, and therefore, detects CO
2, indoor whether anoxic as can be known.Outdoor CO
2About 350-700ppm, indoor is normal lower than 1000ppm, the utility model alarming value is set to 1000ppm, as indoor CO
2When surpassing 1000ppm, by buzzer warning, start simultaneously scavenger fan and ventilate.
Fig. 3 is the connecting circuit figure of gas sensor, adopts MQ-5 type gas sensor, and it is to liquefied gas, and natural gas, town gas have sensitivity preferably, is fit to family to the monitoring device use of liquefied gas, natural gas and coal gas.When sensor detects tested gas, the output voltage values of comparator LM393 pin two is directly proportional to the concentration of gas, when gas concentration value surpasses the threshold values of potentiometer RP setting, the voltage of comparator 2 pin is higher than the voltage of 3 pin, 1 pin output low level, the LED lamp is bright, sends interrupt requests to single-chip microcomputer simultaneously, single-chip microcomputer is completed warning in interrupt service routine, start the scavenger fan related work such as ventilate.
Claims (3)
1. an indoor air quality monitoring and control device, comprise single-chip microcomputer, scavenger fan, CO
2Sensor, gas sensor, keyboard interface circuit, LCD MODULE, condition indication circuit, warning circuit and control relay circuit, the input of described single-chip microcomputer is connected to respectively CO
2Sensor, gas sensor and keyboard interface circuit, the output of single-chip microcomputer is connected to respectively the input of LCD MODULE, warning circuit, condition indication circuit and control relay circuit, and the control end of described scavenger fan is connected with the output of relay.
2. a kind of indoor air quality monitoring according to claim 1 and control device, is characterized in that: described single-chip microcomputer employing STC89C52 chip, described LCD MODULE employing LCD12864.
3. a kind of indoor air quality monitoring according to claim 1 and control device, is characterized in that: described CO
2Sensor adopts infrared carbon dioxide sensor assembly MH-Z15, and described gas sensor adopts semiconductor gas sensor MQ-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207200170U CN202993473U (en) | 2012-12-25 | 2012-12-25 | Indoor air quality monitoring and controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207200170U CN202993473U (en) | 2012-12-25 | 2012-12-25 | Indoor air quality monitoring and controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202993473U true CN202993473U (en) | 2013-06-12 |
Family
ID=48564649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207200170U Expired - Fee Related CN202993473U (en) | 2012-12-25 | 2012-12-25 | Indoor air quality monitoring and controlling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202993473U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546135A (en) * | 2013-09-22 | 2014-01-29 | 天津大学 | Bathroom peculiar-smell-removal purification controller |
| CN103643990A (en) * | 2013-12-20 | 2014-03-19 | 煤炭科学研究总院 | Air treatment system of underground coal mine |
| CN104456857A (en) * | 2014-12-31 | 2015-03-25 | 桂林科技企业发展中心 | Indoor harmful gas monitoring system |
| CN105135583A (en) * | 2015-09-30 | 2015-12-09 | 广东美的制冷设备有限公司 | Ventilation window and control method thereof |
| CN106196465A (en) * | 2016-07-21 | 2016-12-07 | 广西柏豪家具有限公司 | A kind of office's automatic air interchanger and control method |
| CN106597869A (en) * | 2017-01-24 | 2017-04-26 | 柳州得实科技有限公司 | Home gas concentration control system |
| CN108151260A (en) * | 2018-01-03 | 2018-06-12 | 西安鹏光环保科技有限责任公司 | A kind of indoor harmful gas monitors system |
| CN113267534A (en) * | 2021-07-21 | 2021-08-17 | 深圳盛方科技有限公司 | Manufacturing method of intelligent gas identification system |
-
2012
- 2012-12-25 CN CN2012207200170U patent/CN202993473U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546135A (en) * | 2013-09-22 | 2014-01-29 | 天津大学 | Bathroom peculiar-smell-removal purification controller |
| CN103643990A (en) * | 2013-12-20 | 2014-03-19 | 煤炭科学研究总院 | Air treatment system of underground coal mine |
| CN103643990B (en) * | 2013-12-20 | 2016-07-06 | 煤炭科学技术研究院有限公司 | A kind of air treatment system of underground coal mine |
| CN104456857A (en) * | 2014-12-31 | 2015-03-25 | 桂林科技企业发展中心 | Indoor harmful gas monitoring system |
| CN105135583A (en) * | 2015-09-30 | 2015-12-09 | 广东美的制冷设备有限公司 | Ventilation window and control method thereof |
| CN106196465A (en) * | 2016-07-21 | 2016-12-07 | 广西柏豪家具有限公司 | A kind of office's automatic air interchanger and control method |
| CN106597869A (en) * | 2017-01-24 | 2017-04-26 | 柳州得实科技有限公司 | Home gas concentration control system |
| CN108151260A (en) * | 2018-01-03 | 2018-06-12 | 西安鹏光环保科技有限责任公司 | A kind of indoor harmful gas monitors system |
| CN113267534A (en) * | 2021-07-21 | 2021-08-17 | 深圳盛方科技有限公司 | Manufacturing method of intelligent gas identification system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131225 |