CN106801974B - Constant temperature and humidity control system and method for tobacco balance room - Google Patents
Constant temperature and humidity control system and method for tobacco balance room Download PDFInfo
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- CN106801974B CN106801974B CN201611256835.9A CN201611256835A CN106801974B CN 106801974 B CN106801974 B CN 106801974B CN 201611256835 A CN201611256835 A CN 201611256835A CN 106801974 B CN106801974 B CN 106801974B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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Abstract
The invention discloses a constant temperature and humidity control system and a method thereof for a tobacco balance room, wherein the system comprises at least four temperature and humidity detectors which are respectively arranged at preset heights of four side walls in the tobacco balance room, and the temperature and humidity detectors collect the temperature and humidity of the tobacco balance room according to a preset collection period and transmit the temperature and humidity to a controller; the controller is used for respectively averaging the temperature and humidity information transmitted by the corresponding temperature and humidity detectors within a preset time period to serve as actual temperature and humidity values detected by the respective temperature and humidity detectors, and then accumulating the actual temperature and humidity values detected by the respective temperature and humidity detectors to serve as an average value to serve as a real-time temperature and humidity value between tobacco balances; the controller is also used for comparing the obtained real-time temperature and humidity value of the tobacco balance room with the corresponding process temperature set value and the process humidity set value respectively, and further controlling the starting and stopping of the air conditioning system, the exhaust fan and the humidifying system and the opening degree of the ventilation valve to realize the constant temperature and humidity of the tobacco balance room.
Description
Technical Field
The invention belongs to the field of tobacco control, and particularly relates to a constant temperature and humidity control system and method for a tobacco balance room.
Background
The tobacco balance is a process of placing the rolled tobacco in a closed balance room for natural aging, balancing moisture, removing miscellaneous gas and improving smoking quality. The prior aging technology is to place the rolled tobacco in a constant-temperature constant-humidity balance room to reach the aging time required by the process so as to ensure the aging quality. Therefore, the temperature and humidity of the tobacco balance is a key index of the aging process, and the precision requirement is high.
The existing method for controlling the temperature and humidity of the tobacco balance room adopts PID control, utilizes a temperature and humidity detector arranged in the balance room to measure the actual temperature and humidity, compares the actual temperature and humidity with a set value (range) of process requirements, and further controls the refrigeration of an air conditioner and the humidification of a humidifier, and controls the dehumidification of an exhaust system. Tobacco aging is a process in which fermentation generates heat, and therefore, a heater is not required. As the process index has higher accuracy and the time lag of a PID control system, the temperature and humidity detected by the detector are uploaded to the controller, and then the controller is compared with the process set value, and the execution mechanism is driven to adjust according to the calculated value, and the temperature and humidity at the moment of the balance have a certain time difference with the temperature and humidity calculated and input by the controller, the temperature and humidity in the balance can fluctuate greatly, and the process index range requirement can not be met.
The temperature between the tobacco balances is adjusted by tobacco fermentation heat generation, fresh air and refrigeration, and the fermentation heat generation is a slow process, so that the constant temperature is relatively easy to realize. The cigarette with higher humidity is conveyed to the balance room in each shift, so that the given fluctuation of the humidity is larger. The tobacco raw materials are all processed manually, so the moisture content fluctuation of different batches of tobacco is large, and the humidity control difficulty between balances is increased.
Disclosure of Invention
In order to solve the defects of the prior art, the first object of the invention is to provide a constant temperature and humidity control system of a tobacco balance room.
The invention relates to a constant temperature and humidity control system of a tobacco balance room, which comprises:
the temperature and humidity detectors are respectively arranged at preset heights of four side walls in the tobacco balance room, and are used for collecting the temperature and humidity of the tobacco balance room according to a preset collection period and transmitting the temperature and humidity to the controller;
the controller is used for respectively averaging the temperature and humidity information transmitted by the corresponding temperature and humidity detectors within a preset time period to serve as actual temperature and humidity values detected by the respective temperature and humidity detectors, and then accumulating the actual temperature and humidity values detected by the respective temperature and humidity detectors to serve as an average value to serve as a real-time temperature and humidity value between tobacco balances;
the controller is also used for comparing the obtained real-time temperature and humidity value of the tobacco balance room with the corresponding process temperature set value and the process humidity set value respectively, and further controlling the starting and stopping of the air conditioning system, the exhaust fan and the humidifying system and the opening degree of the ventilation valve to realize the constant temperature and humidity of the tobacco balance room.
The controller is also used for judging the real-time temperature value and the process temperature set value in the calculated real-time temperature and humidity value between the tobacco balances, and if the actual temperature value is higher than the set temperature, the refrigerating system is started to implement cooling; and shutting down the refrigeration system until the actual temperature value is lower than the set temperature. Thereby ensuring that the actual temperature of the room fluctuates within the process requirement range of the set temperature.
The controller is also used for reading the actual temperature outside the workshop when judging that the real-time temperature value in the real-time temperature and humidity value of the tobacco balance room is greater than the process temperature set value and needs to be refrigerated and cooled, and starting the ventilator and the fresh air valve to introduce outdoor cold air to implement refrigeration when the temperature outside the workshop is less than 13 ℃ and the energy-saving function is started again, or starting the air conditioner to perform refrigeration. Thereby achieving the purpose of energy conservation.
The controller is also used for judging the real-time humidity value and the process humidity set value in the real-time temperature and humidity value of the tobacco balance room, and when the real-time humidity value is larger than the upper limit of the process set humidity, the exhaust fan is started to perform moisture removal, so that the real-time humidity of the room is quickly returned to the process set range.
After the exhaust fan is started, the controller is further used for calculating whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, it is judged that new tobacco enters the tobacco balance room, the acquisition period of the temperature and humidity detector is shortened by half, the reaction time of the control system is shortened, and humidity is prevented from exceeding the upper limit and the lower limit due to slow reaction of the control system.
The controller is also used for starting the humidifier for humidification when the real-time humidity value between the tobacco balances is reduced to be close to the lower limit of the set process humidity value, wherein the humidification speed can be adjusted by setting the humidification power transformation ratio, and the real-time humidity is ensured to rise rapidly and not to exceed the lower limit.
After the humidifier is started, the controller is further used for calculating whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, it is judged that new tobacco enters the tobacco balance room, the acquisition period of the temperature and humidity detector is shortened by half, the reaction time of the control system is shortened, and humidity is prevented from exceeding the upper limit and the lower limit due to slow reaction of the control system.
The second purpose of the invention is to provide a control method of a constant temperature and humidity control system of a tobacco balance room.
The invention discloses a control method of a constant temperature and humidity control system of a tobacco balance room, which comprises the following steps:
the temperature and humidity detector collects the temperature and humidity of the tobacco balance according to a preset collection period and transmits the temperature and humidity to the controller;
the controller respectively averages temperature and humidity information transmitted by corresponding temperature and humidity detectors within a preset time period and then takes the temperature and humidity information as actual temperature and humidity values detected by the temperature and humidity detectors, and then accumulates the actual temperature and humidity values detected by the temperature and humidity detectors and then takes the average value as a real-time temperature and humidity value between tobacco balances;
the controller also compares the real-time temperature and humidity value of the tobacco balance room with the corresponding process temperature set value and process humidity set value respectively, and then controls the start and stop of the air conditioning system, the exhaust fan and the humidification system and the opening degree of the ventilation valve to realize the constant temperature and humidity of the tobacco balance room.
The method further comprises the following steps: the controller judges the real-time temperature value and the process temperature set value in the real-time temperature and humidity value of the tobacco balance room, and if the real-time temperature value and the process temperature set value are not greater than the process temperature set value, the air conditioning system is closed; otherwise, the difference between the real-time temperature value and the outdoor temperature between the tobacco balances is obtained, if the difference between the real-time temperature value and the outdoor temperature is larger than a preset threshold value, the controller outputs a control signal to the ventilation valve to realize the introduction of fresh air, and if the difference between the real-time temperature value and the outdoor temperature is not larger than the preset threshold value, the air conditioning system is started to refrigerate.
The method further comprises the following steps: the controller judges the real-time humidity value and the process humidity set value in the real-time temperature and humidity values of the tobacco equilibrium, and if the real-time humidity value is larger than the process humidity set value, the exhaust fan is started; after the exhaust fan is started, the controller calculates whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if so, the controller judges that new tobacco enters a tobacco balance room, and the acquisition period of the temperature and humidity detector is shortened by a half;
if the real-time humidity value between the tobacco balances is not greater than the set process humidity value, setting a humidity power transformation ratio, and starting a humidifier; after the humidifier is started, the controller calculates whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, the situation that new tobacco enters a tobacco balance room is judged, and the acquisition period of the temperature and humidity detector is shortened by half.
The invention has the beneficial effects that:
1. the invention compares the real-time temperature and humidity value of the tobacco balance room with the corresponding process temperature set value and the process humidity set value respectively, and further controls the start and stop of the air conditioning system, the exhaust fan and the humidifying system and the opening of the ventilation valve to realize the constant temperature and humidity of the tobacco balance room.
2. According to the invention, the real-time temperature value and the process temperature set value in the real-time temperature and humidity value of the tobacco balance are judged, and the actual temperature value is higher than the set temperature, a refrigeration system is started to implement cooling; and shutting down the refrigeration system until the actual temperature value is lower than the set temperature. Therefore, the fluctuation of the actual temperature of the room in the process requirement range of the set temperature is ensured, and the fluctuation of the temperature of the balance room in the process set temperature range is ensured and does not exceed the upper and lower temperature limits of the process requirement.
3. When the outdoor temperature is lower in winter, outdoor fresh air is introduced for refrigeration, so that the aim of saving energy is fulfilled.
Drawings
FIG. 1 is a schematic diagram of temperature control of a constant temperature and humidity control system of a tobacco balance room;
FIG. 2 is a schematic diagram of humidity control of a constant temperature and humidity control system of a tobacco balance room.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
the invention relates to a constant temperature and humidity control system of a tobacco balance room, which comprises: the temperature and humidity detectors are connected with the controller, and the controller is connected with the air conditioning system, the exhaust fan, the humidification system and the ventilation valve respectively.
Wherein, air conditioning system, exhaust fan, humidification system and ventilation valve all are current structure, will not describe here again tiredly.
(1) The temperature and humidity detectors are respectively installed at preset height positions of four side walls in the tobacco balance room, and collect the temperature and humidity between the tobacco balance rooms according to a preset collection period and transmit the temperature and humidity to the controller.
The temperature and humidity detector is a temperature and humidity sensor, the measurement temperature range is-5 ℃ to +55 ℃, the measurement precision is +/-0.1 ℃, the measurement humidity range is 0-95% rh, the measurement precision is +/-1.8% rh, and the temperature and humidity detector has an anticorrosion dust-resistant coating film humidity sensitive element and a 4-20 mA output signal.
(2) The controller is used for respectively averaging the temperature and humidity information transmitted by the corresponding temperature and humidity detectors within a preset time period to serve as actual temperature and humidity values detected by the respective temperature and humidity detectors, and then accumulating the actual temperature and humidity values detected by the respective temperature and humidity detectors to serve as an average value to serve as a real-time temperature and humidity value between tobacco balances;
the controller is also used for comparing the obtained real-time temperature and humidity value of the tobacco balance room with the corresponding process temperature set value and the process humidity set value respectively, and further controlling the starting and stopping of the air conditioning system, the exhaust fan and the humidifying system and the opening degree of the ventilation valve to realize the constant temperature and humidity of the tobacco balance room.
The controller can adopt Siemens S7-300PLC to realize the collection, transmission and control of analog signals of temperature, humidity and the like. The controller can also be realized by adopting other single-chip microcomputers or programmable logic chips with the existing models.
The parameters of the specific embodiment of the tobacco balance room of the invention are as follows:
the temperature range of the process variable-frequency constant-temperature constant-humidity air conditioning unit is 16-32 ℃, the temperature control precision requirement reaches +/-1 ℃, the temperature requirement control range is 21 +/-1 ℃, and the humidity requirement control range is 60-70%.
In particular, the amount of the solvent to be used,
(1) a data acquisition part:
for example: four side walls in the balance room are respectively provided with 1 temperature and humidity detector, and the installation height of the temperature and humidity detectors can be 1.4-1.7 m in the middle of the height of the balance room according to the actual situation. In this embodiment, the temperature and humidity detector uses the average value of 20 sampling as the actual value of the point, and then uses the average of 4 values as the real-time temperature and humidity value between balances, which is used as the main basis for control.
Wherein, the temperature value of temperature and humidity detector 20 samplings is: t is t1、t2、……、t20(ii) a The humidity value of 20 sampling of the temperature and humidity detector is as follows: h is1、h2、……、h20。
In the specific implementation process, when the humidification system is not started, the humidity detection value rises by more than 20% within 1 hour, a newly produced cigarette enters, and the data acquisition period is shortened by half so as to improve the data acquisition accuracy.
In order to improve the data acquisition accuracy, when the humidification system is not started, the humidity detection value rises more than other preset percentages in other preset time periods, a newly produced cigarette enters the humidification system, and the data acquisition period is shortened by half.
(2) Temperature control:
as shown in fig. 1, the controller determines the real-time temperature value and the process temperature set value in the real-time temperature and humidity value of the tobacco balance, and if the real-time temperature value and the process temperature set value are not greater than the process temperature set value, the air conditioning system is turned off.
When the real-time temperature value in the real-time temperature and humidity value of the tobacco balance is judged to be larger than the process temperature set value, the difference between the real-time temperature value and the outdoor temperature of the tobacco balance is obtained, if the difference value between the real-time temperature value and the outdoor temperature is larger than a preset threshold value, the controller outputs a control signal to the ventilation valve to realize the introduction of fresh air, and otherwise, the air conditioning system is started to refrigerate.
Taking a preset threshold value of the difference between the real-time temperature value and the outdoor temperature of the tobacco balance as an example, the preset threshold value is 5 ℃:
in order to realize energy conservation, when the outdoor temperature is lower than the balance room indoor temperature by more than 5 ℃, the controller outputs a control signal to the ventilation valve to realize the introduction of fresh air, and fresh air is selected for cooling.
(3) Humidity control:
as shown in fig. 2, the controller determines the real-time humidity value and the process humidity set value in the real-time temperature and humidity values of the tobacco equilibrium room, and starts the exhaust fan if the former is greater than the latter.
After the exhaust fan is started, whether the real-time humidity value rise in a preset time period is larger than a preset percentage is calculated, if yes, it is judged that new tobacco enters a tobacco balance room, and the acquisition period of the temperature and humidity detector is shortened by half.
And when the real-time humidity value between the tobacco balances is not greater than the set process humidity value, setting the humidity power transformation ratio and starting the humidifier.
After the humidifier is started, the controller is further used for calculating whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, it is judged that new tobacco enters the tobacco balance room, and the acquisition period of the temperature and humidity detector is shortened by half.
The following also takes four temperature and humidity detectors as an example to illustrate the control principle of the constant temperature and humidity control system of the tobacco balance room of the present invention.
Specifically, the method comprises the following steps: the control principle of the constant temperature and humidity control system of the tobacco balance room is as follows:
the four temperature and humidity detectors respectively collect the temperature and humidity of the tobacco balance according to a preset collection period and transmit the temperature and humidity to the controller for processing;
the controller processes the received signals as follows:
averaging temperature and humidity information transmitted by corresponding temperature and humidity detectors within a preset time period, and then taking the average as an actual temperature and humidity value detected by each temperature and humidity detector, and accumulating the actual temperature and humidity values detected by each temperature and humidity detector to obtain an average value as a real-time temperature and humidity value between tobacco balances;
and comparing the obtained real-time temperature and humidity value of the tobacco balance room with the corresponding process temperature set value and process humidity set value respectively, and further controlling the start and stop of an air conditioning system, an exhaust fan and a humidifying system and the opening of a ventilation valve to realize constant temperature and humidity of the tobacco balance room.
Specifically, the controller compares the calculated real-time temperature and humidity value between the tobacco balances with the corresponding process temperature set value and process humidity set value respectively as follows:
(1) judging the sizes of a real-time temperature value and a process temperature set value in the calculated real-time temperature and humidity value of the tobacco balance room, and if the former value is not greater than the latter value, closing an air conditioning system;
otherwise, the difference between the real-time temperature value and the outdoor temperature between the tobacco balances is obtained, if the difference between the real-time temperature value and the outdoor temperature is larger than a preset threshold value, the controller outputs a control signal to the ventilation valve to realize the introduction of fresh air, and if the difference between the real-time temperature value and the outdoor temperature is not larger than the preset threshold value, the air conditioning system is started to refrigerate.
(2) Judging the real-time humidity value and the process humidity set value in the calculated real-time temperature and humidity values of the tobacco balance room, and starting an exhaust fan if the real-time humidity value is greater than the process humidity set value; after the exhaust fan is started, the controller calculates whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, the situation that new tobacco enters a tobacco balance room is judged, and the acquisition period of the temperature and humidity detector is shortened by half.
If the real-time humidity value between the tobacco balances is not greater than the set process humidity value, setting a humidity power transformation ratio, and starting a humidifier; after the humidifier is started, the controller calculates whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, the situation that new tobacco enters a tobacco balance room is judged, and the acquisition period of the temperature and humidity detector is shortened by half.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. A constant temperature and humidity control system of a tobacco balance room is characterized by comprising:
the temperature and humidity detectors are respectively arranged at preset heights of four side walls in the tobacco balance room, and are used for collecting the temperature and humidity of the tobacco balance room according to a preset collection period and transmitting the temperature and humidity to the controller;
the controller is used for respectively averaging the temperature and humidity information transmitted by the corresponding temperature and humidity detectors within a preset time period to serve as actual temperature and humidity values detected by the respective temperature and humidity detectors, and then accumulating the actual temperature and humidity values detected by the respective temperature and humidity detectors to serve as an average value to serve as a real-time temperature and humidity value between tobacco balances;
the controller is also used for comparing the obtained real-time temperature and humidity value of the tobacco balance room with the corresponding process temperature set value and process humidity set value respectively, and further controlling the starting and stopping of the air conditioning system, the exhaust fan and the humidifying system and the opening of the ventilation valve to realize the constant temperature and humidity of the tobacco balance room;
after the humidifier is started, the controller is further used for calculating whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, it is judged that new tobacco enters a tobacco balance room, and the acquisition period of the temperature and humidity detector is shortened by half;
and the controller is also used for setting the humidity power transformation ratio and starting the humidifier when the real-time humidity value between the tobacco balances is not greater than the set process humidity value.
2. The system as claimed in claim 1, wherein the controller is further configured to determine the real-time temperature value and the process temperature set value of the real-time temperature and humidity value of the tobacco balance, and if the real-time temperature and humidity value is not greater than the process temperature set value, the air conditioning system is turned off.
3. The system as claimed in claim 2, wherein the controller is further configured to determine a difference between the real-time temperature value and the outdoor temperature of the tobacco balance when the real-time temperature value of the real-time temperature and humidity value of the tobacco balance is greater than a set process temperature value, and if the difference is greater than a preset threshold, the controller outputs a control signal to the ventilation valve to enable fresh air to be introduced, otherwise, the air conditioning system is started to perform cooling.
4. The system as claimed in claim 1, wherein the controller is further configured to determine both the real-time humidity value and the process humidity set value of the real-time humidity value of the tobacco balance, and if the real-time humidity value is greater than the process humidity set value, the exhaust fan is activated.
5. The system of claim 4, wherein after the exhaust fan is started, the controller is further configured to calculate whether the real-time humidity value rise is greater than a preset percentage within a preset time period, and if so, determine that new tobacco enters the tobacco balance room, and shorten the acquisition cycle of the temperature and humidity detector by half.
6. A control method of a constant temperature and humidity control system of a tobacco balance room according to any one of claims 1 to 5, comprising:
the temperature and humidity detector collects the temperature and humidity of the tobacco balance according to a preset collection period and transmits the temperature and humidity to the controller;
the controller respectively averages temperature and humidity information transmitted by corresponding temperature and humidity detectors within a preset time period and then takes the temperature and humidity information as actual temperature and humidity values detected by the temperature and humidity detectors, and then accumulates the actual temperature and humidity values detected by the temperature and humidity detectors and then takes the average value as a real-time temperature and humidity value between tobacco balances;
the controller is also used for comparing the obtained real-time temperature and humidity value of the tobacco balance room with a corresponding process temperature set value and a corresponding process humidity set value respectively, and further controlling the starting and stopping of an air conditioning system, an exhaust fan and a humidifying system and the opening of a ventilation valve to realize the constant temperature and humidity of the tobacco balance room;
the controller is also used for calculating whether the real-time humidity value rise in a preset time period is greater than a preset percentage, if so, judging that new tobacco enters a tobacco balance room, and shortening the acquisition cycle of the temperature and humidity detector by half;
if the real-time humidity value between the tobacco balances is not greater than the set process humidity value, setting a humidity power transformation ratio, and starting a humidifying system; after the humidifying system is started, the controller calculates whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if so, new tobacco enters a tobacco balance room, and the acquisition period of the temperature and humidity detector is shortened by half.
7. The method for controlling a constant temperature and humidity control system of a tobacco balance room according to claim 6, further comprising: the controller judges the real-time temperature value and the process temperature set value in the real-time temperature and humidity value of the tobacco balance room, and if the real-time temperature value and the process temperature set value are not greater than the process temperature set value, the air conditioning system is closed; otherwise, the difference between the real-time temperature value and the outdoor temperature between the tobacco balances is obtained, if the difference between the real-time temperature value and the outdoor temperature is larger than a preset threshold value, the controller outputs a control signal to the ventilation valve to realize the introduction of fresh air, and if the difference between the real-time temperature value and the outdoor temperature is not larger than the preset threshold value, the air conditioning system is started to refrigerate.
8. The method for controlling a constant temperature and humidity control system of a tobacco balance room according to claim 6, further comprising: the controller judges the real-time humidity value and the process humidity set value in the real-time temperature and humidity values of the tobacco equilibrium, and if the real-time humidity value is larger than the process humidity set value, the exhaust fan is started; after the exhaust fan is started, the controller calculates whether the real-time humidity value rise in a preset time period is larger than a preset percentage, if yes, the situation that new tobacco enters a tobacco balance room is judged, and the acquisition period of the temperature and humidity detector is shortened by half.
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| CN108181958A (en) * | 2018-01-10 | 2018-06-19 | 中国烟草总公司郑州烟草研究院 | A kind of constant temperature and moisture test device and method suitable for tobacco thermophysical property measurement |
| CN110232503B (en) * | 2019-05-16 | 2021-08-27 | 浙江中烟工业有限责任公司 | Production-drive-based energy-saving intelligent control scheduling method for integrated air conditioner |
| CN111765610B (en) * | 2020-07-09 | 2021-07-23 | 苏州智数家建筑科技有限公司 | Indoor humidity control method |
| CN112379710A (en) * | 2020-11-12 | 2021-02-19 | 河北白沙烟草有限责任公司保定卷烟厂 | Air conditioning unit management control system |
| CN112344468A (en) * | 2020-11-12 | 2021-02-09 | 河北白沙烟草有限责任公司保定卷烟厂 | Constant temperature and humidity equipment for fermentation chamber |
| CN112346503A (en) * | 2020-11-12 | 2021-02-09 | 河北白沙烟草有限责任公司保定卷烟厂 | Fermentation process management control system |
| CN115167578B (en) * | 2022-06-22 | 2024-02-02 | 浙江中烟工业有限责任公司 | Dynamic threshold adjustment method for variable-temperature humidity control interval |
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| CN101021351A (en) * | 2006-12-05 | 2007-08-22 | 董练红 | Blast pipe type air conditioner device capable of two-directional exchanging air |
| CN103621426B (en) * | 2013-11-08 | 2015-09-02 | 盐城工学院 | A kind egg store method and system |
| CN103994543A (en) * | 2014-04-28 | 2014-08-20 | 东南大学 | Indoor constant temperature and humidity intelligent control system and method |
| KR102243828B1 (en) * | 2014-06-03 | 2021-04-23 | 삼성전자주식회사 | Method for controlling air conditioner |
| CN205119245U (en) * | 2015-09-11 | 2016-03-30 | 北京三五二环保科技有限公司 | Intelligence linkage air purification system |
| CN105607724A (en) * | 2015-12-22 | 2016-05-25 | 深圳市金立通信设备有限公司 | Terminal control method and terminal |
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