CN101806483B - Air quality detection and control system - Google Patents
Air quality detection and control system Download PDFInfo
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- CN101806483B CN101806483B CN2010101364384A CN201010136438A CN101806483B CN 101806483 B CN101806483 B CN 101806483B CN 2010101364384 A CN2010101364384 A CN 2010101364384A CN 201010136438 A CN201010136438 A CN 201010136438A CN 101806483 B CN101806483 B CN 101806483B
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- air quality
- air
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- blower fan
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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
Abstract
The invention discloses an air quality detection and control system, which comprises a control panel and an air quality sensing device, wherein the control panel is provided with a key circuit, a second master control chip and a communication circuit; the output end of the key circuit is connected with the first input end of the second master control chip; the second master control chip is in bidirectional connection with the communication circuit which is in two-phase connection with the air quality sensing device; and the output end of the air quality sensing device outputs a control signal to control the running of a draught fan. The system has the advantages of automatically updating a reference value of air quality so as to improve the detection sensitivity to indoor air pollution, and saving energy because a three-stage timing function and upper and lower output limits of the draught fan are set to intelligently control the running power of the draught fan to regularly and quantitatively supply and exhaust air.
Description
Technical field
The invention belongs to and detect control system, specifically a kind of TT&C system that IAQ is detected, controls.
Background technology
Present air quality detection and control system comprises control panel and air quality sensing device, key circuit control system's machine open/close and initialization system parameter that control panel is provided with; Main control chip is through the communicating circuit and the first main control chip both-way communication; Second main control chip is through first main control chip control blower fan low-speed running during start, the detected room air pollution situation of the first main control chip receiving sensor, and according to a reference value of the room air pollution situation of setting; Judge the indoor pollution situation; Thereby the power of control blower fan is being discharged under the prerequisite of indoor polluted gas saves energy fast; But a reference value of existing blower fan system comparison air pollution situation confirms that a reference value that its contrast is polluted can not be upgraded automatically, so the sensitivity of system's detection room air pollution situation is low.
The shortcoming of prior art is: a reference value of judging pollution can not be upgraded automatically, and it is low that system detects the sensitivity of room air pollution situation.
Summary of the invention
The purpose of this invention is to provide a kind of highly sensitive air quality detection and control system.
For achieving the above object; The present invention explains a kind of air quality detection and control system; Comprise control panel and air quality sensing device; Said control panel is provided with key circuit, second main control chip and communicating circuit, and the output of said key circuit is connected with the first input end of said second main control chip, and said second main control chip is connected with said communicating circuit is two-way; Said communicating circuit is connected with said air quality sensing device two-phase, the running of the output output control signal control blower fan of said air quality sensing device;
Control panel is installed in indoor, and the air quality sensing device is installed in the blower fan air intake vent, through key circuit; Control system machine open/close; During system boot, second main control chip is through the work of communicating circuit control air quality sensing device, air quality sensing devices control blower fan low-speed running.
Air quality in air quality sensing device sensing chamber after the start; If air pollution is very serious, air quality sensing devices control blower fan runs up, if room air pollution is ten not serious; According to being interior air quality; The voltage signal of 10V is arrived in air quality sensing devices control output 0, controls the suitable rotating speed that operates at of blower fan, and this helps energy savings.
Said air quality sensing device is provided with first main control chip and air mass sensor; The model of first main control chip and second main control chip all is PIC16F946; The output of said air mass sensor is connected with the input of said first main control chip, and its key is: comprise in said first main control chip:
The device that is used to begin;
Be used for initialized device; Carry out the primary data automatic setting of micro computer.
Be used for the device that preheating is waited for; The air quality sensing device is started working, and needs to set 2～3 minutes preheating time.
Be used to set the device of a reference value; In order to compare the dirty degree of air, need the dirty degree a reference value of setting air.
Be used to control the blower fan device of running automatically; After setting a reference value completion, the output control signal, the control blower fan begins low-speed running, helps the indoor air pollution situation of the correct perception of sensor.
Be used to gather the device of air mass sensor signal; The blower fan low-speed running, first main control chip is gathered the numerical value of the detected air pollution situation of air mass sensor.
Be used to judge that the air-polluting absolute value is whether greater than the device of a reference value of setting;
The air-polluting absolute value is exactly the directly voltage signal of output of sensor, and generally speaking, the voltage signal that detects sensor output is 4～5V, just is judged as the very dirt of air this moment.
If the air-polluting absolute value greater than a reference value of setting, then gets into the device that is used to set the blower fan class; Detect the air-polluting absolute value greater than a reference value of setting; The voltage signal that promptly detects sensor output is 4～5V; The very dirt of air this moment is described, the room air pollution situation is more serious, directly exports control signal; The control fan operation is accelerated the discharge of indoor pollution air at high tap position.
If the air-polluting absolute value is less than or equal to a reference value of setting, then entering is used for judging has free of contamination device; If air pollution is very not dirty, need judge the concrete situation of air-polluting.
If do not pollute, then get into the device that is used to seek the optimal criteria value;
Room air does not pollute, and as the optimal criteria value, this a reference value can constantly be upgraded according to this benchmark automatically with the numerical value of existing air pollution degree, help the raising system judge the indoor pollution air sensitivity.
Return the said device that is used to set a reference value;
The optimal criteria value has free of contamination a reference value for judging next time, has dwindled air pollution Data Detection scope, helps improving the precision of judging indoor air pollution situation, and the gear of control blower fan is suitable, makes indoor air quality remain on good state.
If pollution is arranged, then get into the device that is used to set the blower fan class; According to the air pollution situation, the running class of blower fan is set in control.
Entering is used to clean the device of timing; Set the running of blower fan class control blower fan, the cleaning timing of blower fan simultaneously also begins counting, and this cleaning timing also can artificially be set.
Entering is used for judging has free of contamination device;
If pollution is arranged, then entering is used to append the device of running; Pollute if also exist, blower fan continues on original gear, to turn round certain hour, appends the time length of running, can be by setting manually.
Entering is used to reset the device of blower fan class; After fan operation a period of time finishes, reset the class of blower fan, make the operation of blower fan low-grade location; Guarantee circulation of air, be beneficial to sensor and gather up-to-date IAQ situation constantly, simultaneously the blower fan low-speed running; Help energy-conservationly, and can get rid of indoor light contamination.
Return the said device that is used to gather the air mass sensor signal; Sensor remains on sample states constantly, indoor air quality situation is monitored, and be transferred to first main control chip to signal.
If do not pollute, then get into and be used to the device of judging whether the cleaning timing finishes;
If the cleaning timing does not finish, then get into the device that is used for the pick-up transducers signal;
Entering is used to judge the device of level of pollution;
Return the said device that is used to set the blower fan class;
The cleaning timing does not finish, and the pick-up transducers signal is judged level of pollution, sets the class of blower fan once more, and timer keeps continuous time status simultaneously, if do not reach the time of setting, timing goes on always, finishes up to timing.
If the signal of sensor does not return, the cleaning timing will be according to: blower fan prime time running 4 minutes, middle-grade running 20 minutes, and weak shelves running is after 20 minutes, and blower fan will be automatically made and stop.
If the cleaning timing finishes, get into the device that is used to reset the blower fan class; Timing finishes, and sets fan operation at low-grade state, keeps blower fan to extract room air, helps sensor perception constantly indoor pollution situation.
Return the said device that is used for the pick-up transducers signal.
Said second main control chip is provided with first～the 5th button input, serial data input and serial data output; Said key circuit is provided with first～the 5th button, and the control output end group of said first～the 5th button is connected with said first～the 5th button input respectively successively.
Five buttons that key circuit is provided with, wherein first button is used for system boot and shutdown for the start power button; Second button is manual switch key, and generally, system is in automatic running status; After pressing this second button, export parameters such as bound just can running time, the blower fan of control time section and each time period be set, as setting fan operation through button three time periods through the 3rd～the 5th button; Set each time period inner blower length running time and air output thereof, satisfying under the situation of user's actual need, set fan operation in proper state; The exhaust of blowing at regular time and quantity helps saves energy.
Said communicating circuit is provided with the low-power consumption transceiver; The serial data input of said second main control chip is connected with the serial data input with the serial data output of said low-power consumption transceiver respectively with the serial data output, and said low-power consumption transceiver also is provided with receiver homophase I/O end and receiver anti-phase I/O end and the two-way communication of said air quality sensing device.
The model of low-power consumption transceiver is MAX485, and second main control chip is through low-power consumption transceiver and the two-way communication of air quality sensing device.
Said control panel also is provided with temperature sensing circuit and display; Said temperature sensing circuit is provided with thermistor; One termination positive supply of this thermistor; Ground connection behind other end string second resistance, the other end of said thermistor also are connected with the temperature signal input of said second main control chip; Thermistor stops differently under different indoor environment temperatures, detects the voltage at thermistor two ends, just can detect indoor temperature according to the variation of voltage.
Said second main control chip also is provided with first and shows that signal end group and second shows the signal end group, and this first demonstration signal end group and second shows that the signal end group all is connected with the signaling interface end group of said display.
Second main control chip control display shows data such as rotation speed of fan, indoor temperature.
Remarkable result of the present invention is: a reference value of the disconnected air quality of system can be upgraded automatically; Improved the sensitivity that detects the room air pollution situation, set three sections timing functions and blower fan output bound, the running power of Based Intelligent Control joint blower fan; The exhaust of blowing at regular time and quantity, energy savings.
Description of drawings
Fig. 1 is a structural principle block diagram of the present invention;
Fig. 2 is that first main control chip 4 detects control flow chart;
Fig. 3 is the peripheral circuit diagram of second main control chip;
Fig. 4 is key circuit figure;
Fig. 5 is communicating circuit figure;
Fig. 6 is temperature sensing circuit figure.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explain.
Like Fig. 1, shown in 2: a kind of air quality detection and control system; Comprise control panel 1 and air quality sensing device 2; Said air quality sensing device 2 and said 1 two-way connection of control panel, the running of the output output control signal control blower fan 3 of said air quality sensing device 2;
Said air quality sensing device 2 is provided with first main control chip 4 and air mass sensor 5, and the input of said first main control chip 4 is connected with the output of said air mass sensor 5, comprises in said first main control chip 4:
The device that is used to begin;
Be used for initialized device;
Be used for the device that preheating is waited for;
Be used to set the device of a reference value;
Be used to control blower fan 3 device of running automatically;
Be used to gather the device of air mass sensor 5 signals;
Be used to judge that the air-polluting absolute value is whether greater than the device of a reference value of setting;
If the air-polluting absolute value greater than a reference value of setting, then gets into the device that is used to set the blower fan class;
If the air-polluting absolute value is less than or equal to a reference value of setting, then entering is used for judging has free of contamination device;
If do not pollute, then get into the device that is used to seek the optimal criteria value;
Return the said device that is used to set a reference value;
If pollution is arranged, then get into the device that is used to set the blower fan class;
Entering is used to clean the device of timing;
Entering is used for judging has free of contamination device;
If pollution is arranged, then entering is used to append the device of running;
Entering is used to reset the device of blower fan class;
Return the said device that is used to gather air mass sensor 5 signals;
If do not pollute, then get into and be used to the device of judging whether the cleaning timing finishes;
If the cleaning timing does not finish, then get into the device that is used for the pick-up transducers signal;
Entering is used to judge the device of level of pollution;
Return the said device that is used to set the blower fan class;
If the cleaning timing finishes, get into the device that is used to reset the blower fan class;
Return the said device that is used for the pick-up transducers signal.
Like Fig. 3, shown in 4: said second main control chip 7 is provided with first input end K1～the 5th button input K5, serial data input RX and serial data output TX; Said key circuit 6 is provided with the first button B1～the 5th button B5; Control output end group K1 '～K5 ' of the said first button B1～the 5th button B5 is connected with the said first button input K1～the 5th button input K5 respectively successively.
In this enforcement,, realize system boot/shutdown through operating the first button B1 among the first button B1～the 5th button B5; The second button B2 is manual switch key, and generally, start back system is in automatic running status; This moment presses the 3rd button B3 and the 4th button B4 can both check current air quality measured value, after pressing this second button B2, increases wind speed through operating the 3rd button B3; Operate the 4th button B4 and reduce wind speed, the 5th button B5 operates the 5th button B5 for button is set; Running time, blower fan that control time section and each time period can be set are exported parameters such as bound; As setting fan operation through button three time periods, set each time period inner blower length running time and air output thereof, satisfying under the situation of user's actual need; Set fan operation in proper state; The exhaust of blowing at regular time and quantity in fact also can be set below three sections and timing function more than four sections according to the real needs situation.
As shown in Figure 5: said communicating circuit 8 is provided with low-power consumption transceiver 11; The serial data input RX of said second main control chip 7 is connected with serial data input DI with the serial data output R0 of said low-power consumption transceiver 11 respectively with serial data output TX, and said low-power consumption transceiver 11 also is provided with receiver homophase I/O end A and receiver anti-phase I/O end B and said air quality sensing device 2 two-way communications.
As shown in Figure 6: said control panel 1 also is provided with temperature sensing circuit 10 and display 9; Said temperature sensing circuit 10 is provided with thermistor R1; The termination positive supply of this thermistor R1; Other end string second resistance R 2 back ground connection, the other end of said thermistor R1 also is connected with the temperature signal input WENDU of said second main control chip 7;
Said second main control chip 7 also is provided with first and shows that signal end group COM1～COM4 and second shows signal end group S1～S21, and this first demonstration signal end group COM1～COM4 and second shows that signal end group S1～S21 is connected with the signaling interface end group of said display 9.
Claims (4)
1. air quality detection and control system; Comprise control panel (1) and air quality sensing device (2); Said control panel (1) is provided with key circuit (6), second main control chip (7) and communicating circuit (8); The output of said key circuit (6) is connected with the first input end of said second main control chip (7); Said second main control chip (7) and two-way connection of said communicating circuit (8), said communicating circuit (8) is connected with said air quality sensing device (2) two-phase, the running of the output output control signal control blower fan (3) of said air quality sensing device (2);
Said air quality sensing device (2) is provided with first main control chip (4) and air mass sensor (5); The output of said air mass sensor (5) is connected with the input of said first main control chip (4), it is characterized in that: comprise in said first main control chip (4):
The device that is used to begin;
Be used for initialized device;
Be used for the device that preheating is waited for;
Be used to set the device of a reference value;
Be used to control blower fan (3) device of running automatically;
Be used to gather the device of air mass sensor (5) signal;
Be used to judge that the air-polluting absolute value is whether greater than the device of a reference value of setting;
If the air-polluting absolute value greater than a reference value of setting, then gets into the device that is used to set the blower fan class;
If the air-polluting absolute value is less than or equal to a reference value of setting, then entering is used for judging has free of contamination device;
If do not pollute, then get into the device that is used to seek the optimal criteria value;
Return the said device that is used to set a reference value;
If pollution is arranged, then get into the device that is used to set the blower fan class;
Entering is used to clean the device of timing;
Entering is used for judging has free of contamination device;
If pollution is arranged, then entering is used to append the device of running;
Entering is used to reset the device of blower fan class;
Return the said device that is used to gather air mass sensor (5) signal;
If fruit does not pollute, then get into and be used to the device of judging whether the cleaning timing finishes;
If the cleaning timing does not finish, then get into the device that is used for the pick-up transducers signal;
Entering is used to judge the device of level of pollution;
Return the said device that is used to set the blower fan class;
If the cleaning timing finishes, get into the device that is used to reset the blower fan class;
Return the said device that is used for the pick-up transducers signal.
2. according to the said air quality detection and control system of claim 1; It is characterized in that: said second main control chip (7) is provided with first～the 5th button input (K1～K5), serial data input (RX) and serial data output (TX); Said key circuit (6) is provided with first～the 5th button, and (B1～B5), (the control output end group of B1～B5) (K1 '～K5 ') is respectively at said first～the 5th button input (K1～K5) connect for said first～the 5th button.
3. according to the said air quality detection and control system of claim 2; It is characterized in that: said communicating circuit (8) is provided with low-power consumption transceiver (11); The serial data input (RX) of said second main control chip (7) is connected with serial data input (DI) with the serial data output (R0) of said low-power consumption transceiver (11) respectively with serial data output (TX), and said low-power consumption transceiver (11) also is provided with receiver homophase I/O end (A) and receiver anti-phase I/O end (B) and said air quality sensing device (2) two-way communication.
4. according to the said air quality detection and control system of claim 3; It is characterized in that: said control panel (1) also is provided with temperature sensing circuit (10) and display (9); Said temperature sensing circuit (10) is provided with thermistor (R1); The one termination positive supply of this thermistor (R1), other end string second resistance (R2) back ground connection, the other end of said thermistor (R1) also is connected with the temperature signal input (WENDU) of said second main control chip (7);
Said second main control chip (7) also is provided with first and shows that (COM1～COM4) and second shows that (S1～S21), this first shows signal end group (COM1～COM4) and the second demonstration signal end group (S1～S21) all be connected with the signaling interface end group of said display (9) to the signal end group to the signal end group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101364384A CN101806483B (en) | 2010-03-30 | 2010-03-30 | Air quality detection and control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101364384A CN101806483B (en) | 2010-03-30 | 2010-03-30 | Air quality detection and control system |
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| CN101806483A CN101806483A (en) | 2010-08-18 |
| CN101806483B true CN101806483B (en) | 2012-07-04 |
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| CN2010101364384A Active CN101806483B (en) | 2010-03-30 | 2010-03-30 | Air quality detection and control system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148560B (en) * | 2013-02-27 | 2015-09-16 | 上海烟草集团有限责任公司 | A kind of monitoring room air pollution and ventilation control method |
| US9612188B2 (en) * | 2014-06-05 | 2017-04-04 | Alen Corporation | Method for monitoring and purifying air |
| CN108344718B (en) * | 2018-02-08 | 2020-10-20 | 芜湖美智空调设备有限公司 | Filter screen cleanliness detection method, sensor and air treatment equipment |
| CN110160168B (en) * | 2019-05-08 | 2020-09-25 | 青岛海尔空调器有限总公司 | Air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597354A (en) * | 1995-06-13 | 1997-01-28 | Johnson Service Company | Indoor air quality control for constant volume heating, ventilating and air conditioning units |
| CN101413961A (en) * | 2007-10-19 | 2009-04-22 | 北京中立格林控制技术有限公司 | Multifunctional air environment monitoring control device |
-
2010
- 2010-03-30 CN CN2010101364384A patent/CN101806483B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597354A (en) * | 1995-06-13 | 1997-01-28 | Johnson Service Company | Indoor air quality control for constant volume heating, ventilating and air conditioning units |
| CN101413961A (en) * | 2007-10-19 | 2009-04-22 | 北京中立格林控制技术有限公司 | Multifunctional air environment monitoring control device |
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Denomination of invention: Air quality detection and control system Effective date of registration: 20170704 Granted publication date: 20120704 Pledgee: Han Hua guarantee Limited by Share Ltd Pledgor: Chongqing HaiRun Energy-Saving Technology Co., Ltd. Registration number: 2017980000297 |
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Denomination of invention: Air quality measurement and control system Effective date of registration: 20220217 Granted publication date: 20120704 Pledgee: CITIC Bank, Limited by Share Ltd, Chongqing branch Pledgor: CHONGQING HAIRUN ENERGY-SAVING TECHNOLOGY Co.,Ltd. Registration number: Y2022500000008 |