CN107120807B - Intelligent fresh air control system and control method thereof - Google Patents
Intelligent fresh air control system and control method thereof Download PDFInfo
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- CN107120807B CN107120807B CN201710438272.3A CN201710438272A CN107120807B CN 107120807 B CN107120807 B CN 107120807B CN 201710438272 A CN201710438272 A CN 201710438272A CN 107120807 B CN107120807 B CN 107120807B
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Abstract
The invention discloses a fresh air intelligent control system and a control method thereof, wherein the system comprises a fresh air controller and an intelligent household system, the fresh air controller is in communication connection with the intelligent household system through a wireless module, a radio frequency communication module or an RS485 communication interface, and the fresh air controller comprises a PM2.5 sensor and a CO 2 Sensor, temperature and humidity sensor and set up the MCU in fresh air controller, PM2.5 sensor, CO 2 The sensor and the temperature and humidity sensor are respectively and electrically connected with the MCU so as to realize signal and data transmission. The intelligent controller system is exquisite in design and simple in structure, and can not only scientifically and automatically control the fresh air system, but also realize real-time butt joint with the intelligent home. The intelligent control system greatly prolongs the service life of the fresh air controller, reduces the cost and can be popularized and used in industry.
Description
Technical Field
The invention relates to an intelligent fresh air control system and a control method thereof, and belongs to the technical field of fresh air systems.
Background
The fresh air system is an independent air treatment system consisting of a ventilation fan, a pipeline and accessories, wherein the ventilation fan can ventilate and purify outdoor fresh air, the fresh air is conveyed into a room through the pipeline, and meanwhile, indoor dirty air is discharged out of the room.
However, the processing effect and compatibility of the fresh air system commonly found in the market are not satisfactory in the actual use process. Specifically, the traditional fresh air system only considers the freshness of indoor air or the cleanliness of the supplemented air, the control mode is also single, two operations of control and regulation cannot be simultaneously considered, and the fresh air system is not energy-saving and environment-friendly in the use process. If the system only considers the supplement and the introduction of the fresh air, the system can certainly cause great waste of energy sources; if the system only considers the cleanliness of air, the oxygen content of the air is easy to ignore, so that the use effect of the system is affected, and the traditional fresh air system cannot be compatible with intelligent home in the use process and cannot be scientifically and automatically controlled.
Therefore, research on an intelligent control system which can carry out scientific automatic control on a fresh air system and can be in real-time butt joint with an intelligent home becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an intelligent fresh air control system and a control method thereof.
The first object of the present invention is achieved by the technical solution: fresh air intelligent control system, this control system includes fresh air controller and intelligent home system, fresh air controller pass through wireless module, radio frequency communication module or RS485 communication interface with intelligent home system carries out communication and is connected, fresh air controller includes PM2.5 sensor, CO 2 Sensor, temperature and humidity sensor and set up the MCU in fresh air controller, PM2.5 sensor, CO 2 The sensor and the temperature and humidity sensor are respectively and electrically connected with the MCU to realize signal and data transmission, and the MCU is in communication connection with the fresh air purifier through the radio frequency communication module or the RS485 communication interface.
Preferably, the PM2.5 sensor, CO 2 An analog switch for switching a communication port is arranged between the sensor, the temperature and humidity sensor and the MCU, and the PM2.5 sensor and the CO are arranged between the sensor and the temperature and humidity sensor 2 The sensor and the temperature and humidity sensor are respectively connected with one end of the analog switch, and the other end of the analog switch is in data transmission with the MCU through the FPC wire harness.
Preferably, the radio frequency communication module is a 433MHz high frequency radio frequency communication module.
The second object of the present invention is achieved by the technical solution: the control method of the intelligent control system for fresh air purification comprises the following steps:
s1: after the MCU is initialized, the MCU detects whether the MCU receives a control or sensor data query instruction sent by the intelligent home system;
s2: when the MCU receives an instruction for controlling the fresh air purifier, the analog switch is switched to a control port of the fresh air controller, gear data for controlling the purifier are sent, after the control is successful, state information of current purifying equipment is sent, and after the MCU receives the current state of the fresh air purifier, the MCU replies to the intelligent household system;
s3: when receiving an instruction for inquiring the sensor data, the MCU calls out the sensor data stored in the related register flash, and replies the data to the intelligent home system according to the related protocol.
S4: after the MCU processes the intelligent household instruction, continuously inquiring whether the instruction of the intelligent household system is received, if the instruction is not received, inquiring temperature and humidity data of the temperature and humidity sensor downwards, storing the temperature and humidity data into a related flash, and waiting for the inquiring time of the sensor; if the sensor inquiry time is up, the related sensor data is continuously inquired downwards, and if the sensor inquiry time is not up, the information for continuously detecting the intelligent home system is returned.
Preferably, the method further comprises the steps of:
s5: if the sensor inquires that the time is up, the PM2.5 test zone bit is continuously inquired downwards, if the PM2.5 test zone bit is found to be 1, an analog switch is switched to an inquired PM2.5 sensor port of the fresh air controller, the inquired PM2.5 value is transmitted to the MCU, and the MCU replies to the intelligent home system after receiving the current state of the fresh air purifier.
Preferably, the method further comprises the steps of:
s6: if the PM2.5 test flag bit is not found to be 1 when the sensor inquires that the point is down, continuing to perform CO down 2 Testing bit-zone queries, e.g. CO 2 If the test flag bit is 1, the analog switch is switched to query CO of the fresh air controller 2 Port and query CO 2 The value of (2) is transmitted to the MCU, and the MCU replies to the intelligent home system after receiving the current state of the fresh air purifier.
Preferably, the method further comprises the steps of:
s7: if the sensor inquires down from the time to the point that the CO is not inquired 2 If the test flag bit is 1, the control equipment flag bit inquiry is continued downwards, if the control equipment flag bit is 1, an analog switch is switched to a control port of the fresh air controller, and PM2.5 and CO are checked 2 And judging the gear of the fresh air controller according to the data and sending the gear data of the purifier to the intelligent household system.
Preferably, the method further comprises the steps of:
s8: if the sensor inquiry time reaches the point and the control equipment flag bit is inquired downwards, the automatic sending sensor data flag bit inquiry is carried out, if the sensor data automatic sending sensor data flag bit is 1, whether the sensor data change or not is judged, if the sensor data change, the analog switch is switched to a fresh air controller port, the sensor data is sent to the intelligent home system, and if the sensor data do not change, an instruction is sent to the intelligent home system.
The technical scheme of the invention has the advantages that: the intelligent controller system is exquisite in design and simple in structure, and can not only scientifically and automatically control the fresh air system, but also realize real-time butt joint with the intelligent home. The fresh air controller integrates a plurality of sensors, can collect the quality of the indoor air environment in real time in the use process, enables scientific automatic control of a fresh air system to be possible by analyzing the quality of the indoor air environment, can obtain sensor data intelligent automatic control algorithms according to feedback in the use process, and can be compatible with intelligent furniture in various modes. The intelligent control system greatly prolongs the service life of the fresh air controller, reduces the cost, has wide application range and can be popularized and used in industry.
Drawings
FIG. 1 is a schematic diagram of the structure of the intelligent fresh air control system of the invention.
Fig. 2 is a schematic structural diagram of the fresh air intelligent control system of the invention.
FIG. 3 is a flow chart of a control method program of the intelligent fresh air control system.
Detailed Description
The objects, advantages and features of the present invention are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the invention, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the invention.
The invention discloses an intelligent fresh air control system and a control method thereof. As shown in fig. 1 and 2, the intelligent control system comprises a fresh air controller and an intelligent home system, wherein the fresh air controller is in communication connection with the intelligent home system through a wireless module, a radio frequency communication module or an RS485 communication interface, and comprises a PM2.5 sensor and a CO sensor 2 The sensor, the temperature and humidity sensor and the MCU arranged in the fresh air controller are used as micro control units. PM2.5 sensor, CO2 sensor and temperature and humidity sensor realize signal and data transmission with MCU electric connection respectively, thereby MCU carries out communication connection with fresh air purifier through radio frequency communication module or RS485 communication interface, radio frequency communication module is 433MHz high frequency radio frequency communication module preferably. The fresh air controller integrates a plurality of sensors, and can acquire the quality of the indoor air environment in real time according to the needs in the use process, so that scientific automatic control of a fresh air system is possible by analyzing the quality of the indoor air environment, and an intelligent automatic control algorithm can be obtained according to sensor data obtained through feedback in the use process.
The PM2.5 sensor is used for obtaining mass data of PM2.5 and PM10 in unit volume in air, can give specific numerical values of PM2.5 and PM10 in real time in the working process, and has the advantages of accurate measurement, quick response, small volume and the like. Specifically, the PM2.5 sensor is designed to sense dust particles in air, an infrared light emitting diode and a phototransistor are arranged on the opposite angles in the sensor, the optical axes of the infrared light emitting diode and the phototransistor are intersected, when the airflow with dust passes through the intersection area where the optical axes are intersected, the dust reflects infrared light, and the reflected light intensity is proportional to the dust concentration. The photoelectric transistor can detect dust reflection light in the air, even if the dust reflection light is very tiny, such as tobacco smoke particles, the infrared light-emitting diode emits light to meet the dust to generate reflection light, the receiving sensor detects the light intensity of the reflection light, a signal is output, the concentration of the dust is judged according to the light intensity of the output signal, and the concentration of different dust particles is distinguished by outputting two different pulse width modulation signals (PWM).
The CO 2 The sensor is used for detecting the concentration of carbon dioxide and using non-dispersive infrared (NDIR) principle to detect the CO existing in the air 2 The detection is carried out, the selectivity is very good, the oxygen dependence is avoided, and the CO 2 The measuring range of the sensor is 0-5000ppm; the accuracy is high, and reading of +/-30 ppm +/-5% can be achieved; during use, a serial port and an I2C digital communication interface can be provided.
The temperature and humidity sensor is used for sensing temperature and converting the temperature and humidity into an available output signal, and the temperature and humidity are converted into an electric signal which is easy to measure and process in the use process. The temperature and humidity sensor can output various analog signals through signal processing of a high-performance singlechip and has wide application. The system is convenient to use, outputs standard analog signals and is directly applied to various control mechanisms and control systems. The whole machine has more excellent performance and long-term stability. The temperature and humidity sensor is generally at the temperature of-40-120 ℃ and the humidity of 0-100% RH. The output signals of the temperature and humidity sensor have diversity, and are common analog signals of 4-20ma,0-5V,0-10V and the like, and 485 digital signal output can be realized.
Because the number of the sensors exceeds the number of the resources provided by the MCU, in order to reasonably use the MCU resources and optimize the connecting wires in the use process, the intelligent control system adopts an analog switch as a medium for switching the communication ports to simulateThe advantages of the switch relative to a mechanical switch are: low power consumption, high speed, no mechanical contact, small volume, long service life and the like. The PM2.5 sensor and CO 2 An analog switch for switching a communication port is arranged between the sensor, the temperature and humidity sensor and the MCU, and the PM2.5 sensor and the CO are arranged between the sensor and the temperature and humidity sensor 2 The sensor and the temperature and humidity sensor are respectively connected with one end of the analog switch, and the other end of the analog switch is in data transmission with the MCU through the FPC wire harness.
The control method of the intelligent fresh air control system, as shown in fig. 3, comprises the following steps:
s1: after the MCU is initialized, the MCU detects whether the MCU receives a control or sensor data query instruction sent by the intelligent home system;
s2: when the MCU receives an instruction for controlling the fresh air purifier, the analog switch is switched to a control port of the fresh air controller, gear data for controlling the purifier are sent, after the control is successful, state information of current purifying equipment is sent, and after the MCU receives the current state of the fresh air purifier, the MCU replies to the intelligent household system;
s3: when receiving an instruction for inquiring the sensor data, the MCU calls out the sensor data stored in the related register flash, and replies the data to the intelligent home system according to the related protocol.
S4: after the MCU processes the intelligent household instruction, continuously inquiring whether the instruction of the intelligent household system is received, if the instruction is not received, inquiring temperature and humidity data of the temperature and humidity sensor downwards, storing the temperature and humidity data into a related flash, and waiting for the inquiring time of the sensor; if the sensor inquiry time is up, the related sensor data is continuously inquired downwards, and if the sensor inquiry time is not up, the information for continuously detecting the intelligent home system is returned.
S5: the system queries the sensor data at regular time, but only processes one sensor data when each time point arrives, so PM2.5, CO 2 And the control equipment flag bit is set to 1 in turn, if the query time of the sensor is up, the query of the PM2.5 test flag bit is continued downwards, and the PM2.5 test flag bit indicates that: whether this point in time is rotating to the PM2.5 test, e.g. checking for PM2.5 the test zone bit is 1, then will switch the analog switch to the inquiry PM2.5 sensor port of new trend controller to convey the value of PM2.5 that inquires to MCU, MCU is after receiving the current state of new trend clarifier, reply intelligent home systems.
S6: if the PM2.5 test flag bit is not found to be 1 when the sensor inquires that the point is down, continuing to perform CO down 2 Test flag bit query, CO 2 Test flag bit inquiry description: whether or not this point in time is alternating to CO 2 Testing, e.g. detecting CO 2 And if the test flag bit is 1, the analog switch is switched to the query CO2 port of the fresh air controller, the queried CO2 value is transmitted to the MCU, and the MCU replies to the intelligent home system after receiving the current state of the fresh air purifier.
S7: if the sensor inquires down from the time to the point that the CO is not inquired 2 If the test flag bit is 1, the control equipment flag bit inquiry is continued downwards, and the control equipment flag bit description is that: whether the time point turns to the function of the automatic control equipment or not, the controller can be based on the CO 2 If the control equipment flag bit is found to be 1, the analog switch is switched to the control port of the fresh air controller to check PM2.5 and CO 2 And judging the gear of the fresh air controller according to the data and sending the gear data of the purifier to the intelligent household system.
S8: if the sensor inquiry time reaches the point and the control equipment flag bit is not inquired to be 1, inquiring is carried out, automatically sending the sensor data flag bit, if the automatically sending sensor data flag bit is 1, judging whether sensor data has variation, if the sensor data has variation, switching an analog switch to a fresh air controller port, sending the sensor data to an intelligent household system, and if the sensor data does not have variation, sending an instruction to the intelligent household system.
The technical scheme of the invention has the advantages that: the intelligent control system is exquisite in design and simple in structure, and the intelligent controller system can scientifically and automatically control the fresh air system and can be in real-time butt joint with the intelligent home. The fresh air controller can be compatible with intelligent furniture in various modes in the use process. The intelligent control system greatly prolongs the service life of the fresh air controller, reduces the cost, has wide application range and can be popularized and used in industry.
Claims (1)
1. The control method of the intelligent fresh air control system is characterized by comprising the following steps of: the control system comprises a fresh air controller and an intelligent household system, wherein the fresh air controller is in communication connection with the intelligent household system through a wireless module, a radio frequency communication module or an RS485 communication interface, and comprises a PM2.5 sensor and a CO 2 Sensor, temperature and humidity sensor and set up the MCU in fresh air controller, PM2.5 sensor, CO 2 The sensor and the temperature and humidity sensor are electrically connected with the MCU through the analog switch for switching the communication port and the FPC wire harness so as to realize signal and data transmission, the MCU is in communication connection with the fresh air purifier through the 433MHz high-frequency radio frequency communication module or the RS485 communication interface, and the control method comprises the following steps:
s1: after the MCU is initialized, the MCU detects whether the MCU receives a control or sensor data query instruction sent by the intelligent home system;
s2: when the MCU receives an instruction for controlling the fresh air purifier, the analog switch is switched to a control port of the fresh air controller, gear data for controlling the purifier are sent, after the control is successful, state information of current purifying equipment is sent, and after the MCU receives the current state of the fresh air purifier, the MCU replies to the intelligent household system;
s3: when an instruction for inquiring the sensor data is received, the MCU calls out the sensor data stored in a related register flash, and replies the data to the intelligent home system according to a related protocol;
s4: after the MCU processes the intelligent household instruction, continuously inquiring whether the instruction of the intelligent household system is received, if the instruction is not received, inquiring temperature and humidity data of the temperature and humidity sensor downwards, storing the temperature and humidity data into a related flash, and waiting for the inquiring time of the sensor; if the query time of the sensor is up, the related sensor data is continuously queried downwards, and if the query time of the sensor is not up, the information for continuously detecting the intelligent home system is returned;
s5: if the sensor inquires that the time is up, continuing to inquire the PM2.5 test zone bit, if the PM2.5 test zone bit is found to be 1, switching the analog switch to an inquired PM2.5 sensor port of the fresh air controller, transmitting the inquired PM2.5 value to the MCU, and returning to the intelligent home system after the MCU receives the current state of the fresh air purifier;
s6: if the PM2.5 test flag bit is not found to be 1 when the sensor inquires that the point is down, continuing to perform CO down 2 Inquiring the test flag bit, if the CO2 test flag bit is 1, switching the analog switch to inquiring CO of the fresh air controller 2 Port and query CO 2 The value of (2) is transmitted to the MCU, and the MCU replies to the intelligent home system after receiving the current state of the fresh air purifier;
s7: if the sensor inquires down from the time to the point that the CO is not inquired 2 If the test flag bit is 1, the control equipment flag bit inquiry is continued downwards, if the control equipment flag bit is 1, an analog switch is switched to a control port of the fresh air controller, and PM2.5 and CO are checked 2 Judging the gear of the fresh air controller according to the threshold value by the data, and sending the gear data of the purifier to the intelligent home system;
s8: if the sensor inquiry time reaches the point and the control equipment flag bit is not inquired to be 1, automatically sending the sensor data flag bit inquiry, if the automatically sending sensor data flag bit is 1, judging whether the sensor data has variation, if the sensor data has variation, switching an analog switch to a fresh air controller port, sending the sensor data to an intelligent household system, and if the sensor data does not have variation, sending an instruction to the intelligent household system.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012141109A (en) * | 2011-01-05 | 2012-07-26 | Mitsubishi Electric Corp | Ventilation device |
| CN202630999U (en) * | 2012-03-14 | 2012-12-26 | 中国兵器工业集团第五二一研究所 | Digital sensor group apparatus used for monitoring environment |
| CN103324221A (en) * | 2013-06-20 | 2013-09-25 | 武汉新烽光电科技有限公司 | Grain depot intellectualization integrated control system and application method thereof |
| CN104331056A (en) * | 2014-11-18 | 2015-02-04 | 武汉大学 | Novel intelligent indoor household wireless network communication system |
| CN106052019A (en) * | 2016-05-27 | 2016-10-26 | 北京森翔环境科技有限公司 | Novel liquid crystal display controller of fresh air system |
| CN206905206U (en) * | 2017-06-12 | 2018-01-19 | 苏州贝艾尔净化科技有限公司 | New wind intelligent control system |
-
2017
- 2017-06-12 CN CN201710438272.3A patent/CN107120807B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012141109A (en) * | 2011-01-05 | 2012-07-26 | Mitsubishi Electric Corp | Ventilation device |
| CN202630999U (en) * | 2012-03-14 | 2012-12-26 | 中国兵器工业集团第五二一研究所 | Digital sensor group apparatus used for monitoring environment |
| CN103324221A (en) * | 2013-06-20 | 2013-09-25 | 武汉新烽光电科技有限公司 | Grain depot intellectualization integrated control system and application method thereof |
| CN104331056A (en) * | 2014-11-18 | 2015-02-04 | 武汉大学 | Novel intelligent indoor household wireless network communication system |
| CN106052019A (en) * | 2016-05-27 | 2016-10-26 | 北京森翔环境科技有限公司 | Novel liquid crystal display controller of fresh air system |
| CN206905206U (en) * | 2017-06-12 | 2018-01-19 | 苏州贝艾尔净化科技有限公司 | New wind intelligent control system |
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