CN115751625A - Intelligent park indoor temperature control method - Google Patents
Intelligent park indoor temperature control method Download PDFInfo
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- CN115751625A CN115751625A CN202211386419.6A CN202211386419A CN115751625A CN 115751625 A CN115751625 A CN 115751625A CN 202211386419 A CN202211386419 A CN 202211386419A CN 115751625 A CN115751625 A CN 115751625A
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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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Abstract
The invention discloses an indoor temperature control method for an intelligent park, which belongs to the technical field of temperature control and comprises the following steps: acquiring the number N of indoor personnel, the indoor environment temperature TE and the air conditioner air outlet flow Fw in real time; the deviation between the set value SP of the indoor environment temperature and the indoor environment temperature TE is calculated by an indoor temperature PID regulator and is output as a set value of the air conditioner air outlet flow; determining the required air volume Fs of the personnel based on the number N of the personnel, taking the required air volume Fs of the personnel as a feedforward control quantity, and obtaining deviation signals of the required air volume Fs of the personnel and the air conditioner air outlet flow Fw as the input of an air supply flow PID regulator; and the air supply flow PID regulator obtains an output value of the air conditioner air outlet flow regulator through PID operation and uses the output value as a rotating speed given value of the air conditioner fan. The invention comprehensively considers parameters influencing the indoor environment temperature of the garden, the air-conditioning air outlet flow, the personnel air demand and the like, and combines an optimized control strategy to realize the optimized control of the indoor temperature of the garden.
Description
Technical Field
The invention belongs to the technical field of temperature control, and relates to control of indoor temperature through an air conditioner in an intelligent park.
Background
Along with the development of society, people's comfort level requirement to life and operational environment constantly increases, and as people work and the main place that stops in the life in the garden room, its temperature control quality is the important factor that influences environmental comfort level. Usually, the control of the indoor temperature of the garden is completed through an air conditioning system, along with the change of world climate and the rapid increase of the scale and the quantity of the garden, the energy consumption of the indoor air conditioning system of the garden is greatly increased, the energy conservation and the efficiency improvement of the air conditioning system can be effectively realized by the optimized control of the indoor temperature of the garden, and the air conditioning system has good economic effect and social effect. On the other hand, the rapid technical progress of the campus in the intelligent direction provides a solid technical foundation for the optimal control of the indoor temperature of the campus.
At present, the control of the indoor temperature of the garden mainly adopts single-parameter constant temperature or constant air volume control, the consideration factors in the control method are few and simple, the control parameters can not be quickly adjusted according to the actual conditions, and the control temperature is not fine enough.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides the intelligent park indoor temperature control method, which adopts a reliable and practical method aiming at the characteristics of the intelligent park indoor temperature control, comprehensively considers parameters such as the environmental temperature, the air conditioner air outlet flow and the personnel air demand quantity which influence the park indoor, and combines an optimized control strategy to realize the optimized control of the park indoor temperature.
In order to achieve the above object, the present invention provides an intelligent campus indoor temperature control method, comprising:
acquiring the number N of indoor personnel, the indoor environment temperature TE and the air conditioner air outlet flow Fw in real time;
the deviation between the set value SP of the indoor environment temperature and the indoor environment temperature TE is calculated by an indoor temperature PID regulator and is output as a set value of the air conditioner air outlet flow;
determining the required air volume Fs of the personnel based on the number N of the personnel, taking the required air volume Fs of the personnel as a feedforward control quantity, and obtaining deviation signals of the required air volume Fs of the personnel and the air conditioner air outlet flow Fw as the input of an air supply flow PID regulator;
and the air supply flow PID regulator obtains an output value of the air conditioner air outlet flow regulator through PID operation, and the output value is used as a rotating speed given value of the air conditioner fan.
In some optional embodiments, the rf signal is selected from Fs = sign (TE-SP) × F 0 *N*H 0 /P 0 Determining the air quantity Fs required by the people, wherein F 0 Indicating rated outlet air flow of air conditioner, H 0 Power per unit body heat value, P 0 The rated power of the air conditioner is represented, N represents the number of indoor persons, TE represents an actual measured value of indoor environment temperature, SP represents an environment temperature set value, and sign (x) is a sign function.
In some alternative embodiments, the number of persons in the room N is obtained by real-time identification by a camera installed in the room.
In some alternative embodiments, the indoor ambient temperature TE is detected in real time by a temperature sensor installed at the air inlet of the indoor air conditioner.
In some alternative embodiments, the air conditioner outlet air flow rate Fw is detected in real time by a flow sensor installed at the air outlet of the indoor air conditioner.
In some optional embodiments, the method further comprises:
and initializing an indoor temperature PID regulator and an air supply flow PID regulator.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
the invention takes three variables of the environment temperature, the air conditioner air outlet flow and the personnel air demand in the garden room as processing objects, and the whole control system adopts a feedforward and cascade structure to realize the optimized control of the garden room temperature.
Drawings
Fig. 1 is a diagram of an indoor temperature control system according to an embodiment of the present invention;
fig. 2 is a block diagram of an indoor temperature control provided by an embodiment of the present invention;
fig. 3 is a flowchart of an indoor temperature control method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention adopts an indoor temperature control method based on a feedforward and cascade algorithm. The method takes three variables of the indoor environment temperature of the garden, the air conditioner air outlet flow and the personnel air demand as processing objects, and the whole control system adopts a feedforward and cascade structure. As shown in fig. 1, the indoor temperature control system is used for identifying images of cameras installed indoors in real time to obtain the number N of indoor people; a temperature sensor arranged at an air inlet of an indoor air conditioner detects the indoor environment temperature TE in real time; a flow sensor arranged at an air outlet of an indoor air conditioner detects the air outlet flow Fw of the air conditioner in real time; the ambient temperature set point SP is manually entered into the air conditioning control system.
And the air conditioner control system calculates according to a feedforward and cascade algorithm to obtain an output value u (k) of the air conditioner air outlet flow regulator, and the output value u (k) is used as a rotating speed given value of the air conditioner fan. The main regulator (namely an indoor temperature PID regulator) adopts a PID regulator which takes the environment temperature as a detection and control variable, and the deviation of the set value SP of the environment temperature and the actual measured value TE is calculated by the PID regulator and then output as the set value of the air outlet flow of the air conditioner; the required air volume Fs of the personnel is used as a feedforward control quantity; the auxiliary regulator (i.e. the air supply flow PID regulator) adopts a PID regulator taking the air conditioner outlet air flow as a detection and control variable, as shown in figure 1.
In fig. 2, TE represents the actual measurement of ambient temperature in units; fw represents the actual measurement value of the air conditioner outlet air flow, and the unit m 3 H; fs represents the air quantity required by the person in unit m 3 The Fs takes values according to the formula (1); SP represents the ambient temperature set point in units; e (k) represents the deviation value of the air-conditioner outlet air flow in m 3 H; u (k) represents the output value of the air conditioner air outlet flow regulator, and the unit percent is used as the set value of the rotating speed of the air conditioner fan.
Fs＝sign(TE-SP)*F 0 *N*H 0 /P 0 (1)
Wherein, F 0 Indicating rated outlet air flow of air conditioner in m 3 /h；H 0 Expressing the heat power of unit human body, unit kW, and taking the empirical value H 0 ＝0.1kW；P 0 Representing the rated power of the air conditioner in kW; n represents the number of indoor personnel and is unit; TE represents the actual measurement of ambient temperature in units; fs represents the air quantity required by the personnel and is in the unit of m3/h; SP represents the ambient temperature set point in units; sign (x) is a sign function when x>Sign (x) =1 when 0, sign (x) =0 when x =0, and x when x =0<Sign (x) = -1 at 0.
After the air conditioning system is started and the operation state is stable, the control method of the invention is implemented according to the following steps, as shown in the control flow chart 3.
The first step is as follows: initializing a PID regulator serving as a main regulator, and setting an ambient temperature set value;
the second step is that: initializing a PID regulator as a sub-regulator;
the third step: a temperature sensor arranged at an air inlet of an indoor air conditioner detects the indoor environment temperature in real time; a flow sensor arranged at an air outlet of an indoor air conditioner detects the air outlet flow of the air conditioner in real time;
the fourth step: the main regulator obtains a set value of the air outlet flow of the air conditioner through PID operation;
the fifth step: identifying images of cameras installed indoors in real time to obtain the number of indoor personnel; the air conditioner control system calculates and obtains deviation signals e (k) of the air quantity required by personnel and the air conditioner air outlet flow, wherein e (k) = Fs + the set value-Fw of the air conditioner air outlet flow;
and a sixth step: and the auxiliary regulator obtains an output value u (k) of the air conditioner air outlet flow regulator through PID operation and uses the output value u (k) as a rotating speed given value of the air conditioner fan.
The seventh step: k = k +1, return to the third step.
It should be noted that, according to the implementation requirement, each step/component described in the present application can be divided into more steps/components, and two or more steps/components or partial operations of the steps/components can be combined into new steps/components to achieve the purpose of the present invention.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A method for controlling the indoor temperature of a smart park, comprising:
acquiring the number N of indoor personnel, the indoor environment temperature TE and the air conditioner air outlet flow Fw in real time;
the deviation between the set value SP of the indoor environment temperature and the indoor environment temperature TE is calculated by an indoor temperature PID regulator and is output as a set value of the air conditioner air outlet flow;
determining the required air volume Fs of the personnel based on the number N of the personnel, taking the required air volume Fs of the personnel as a feedforward control quantity, and obtaining deviation signals of the required air volume Fs of the personnel and the air conditioner air outlet flow Fw as the input of an air supply flow PID regulator;
and the air supply flow PID regulator obtains an output value of the air conditioner air outlet flow regulator through PID operation and uses the output value as a rotating speed given value of the air conditioner fan.
2. Method according to claim 1, characterized in that it is defined by Fs = sign (TE-SP) × F 0 *N*H 0 /P 0 Determining the air quantity Fs required by the people, wherein F 0 Indicating rated outlet air flow of air conditioner, H 0 Represents the power of heat generation per unit body, P 0 The rated power of the air conditioner is represented, N represents the number of indoor persons, TE represents an actual measured value of indoor environment temperature, SP represents an environment temperature set value, and sign (x) is a sign function.
3. The method according to claim 2, wherein the number of persons in the room N is obtained by real-time identification by a camera installed in the room.
4. The method as set forth in claim 2, wherein the indoor ambient temperature TE is detected in real time by a temperature sensor installed at an air inlet of the indoor air conditioner.
5. The method of claim 2, wherein the air conditioner outlet flow rate Fw is detected in real time by a flow sensor installed at an indoor air conditioner outlet.
6. The method of claim 1, further comprising: and initializing an indoor temperature PID regulator and an air supply flow PID regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211386419.6A CN115751625A (en) | 2022-11-07 | 2022-11-07 | Intelligent park indoor temperature control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211386419.6A CN115751625A (en) | 2022-11-07 | 2022-11-07 | Intelligent park indoor temperature control method |
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| CN115751625A true CN115751625A (en) | 2023-03-07 |
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| CN202211386419.6A Pending CN115751625A (en) | 2022-11-07 | 2022-11-07 | Intelligent park indoor temperature control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117989676A (en) * | 2024-04-07 | 2024-05-07 | 江苏华复保利环保科技有限公司 | Air conditioner energy consumption data supervision method and system based on big data |
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- 2022-11-07 CN CN202211386419.6A patent/CN115751625A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117989676A (en) * | 2024-04-07 | 2024-05-07 | 江苏华复保利环保科技有限公司 | Air conditioner energy consumption data supervision method and system based on big data |
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