Indoor humidity detection method, equipment control method and device, air conditioner, medium and program product

Abstract

The invention provides an indoor humidity detection method and device, an equipment control method and device, an air conditioner, a medium and a program product, and relates to the technical field of air conditioner equipment.The method comprises the steps that in an air conditioner without a humidity sensor, a sensor of the air conditioner is reused to collect sensor information, the humidity information of the indoor environment where the indoor unit of the air conditioner is located is obtained according to the sensor information, an original sensor in the air conditioner is reused, the humidity information of the indoor environment can be detected without independently arranging a humidity sensor, and the humidity detection cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning equipment, and in particular to an indoor humidity detection method, an equipment control method, a device, an air conditioner, a medium and a program product. Background Art

[0002] Ambient humidity has a certain impact on air conditioning cooling or heating, and some comfort control can be done in combination with ambient humidity. In related technologies, if you want to detect the humidity of the environment in which the indoor unit of the air conditioner is located, you need to install a humidity sensor on the indoor unit to collect the ambient humidity, but this will increase the cost of the air conditioner. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides an indoor humidity detection method, an equipment control method, a device, an air conditioner, a medium and a program product.

[0004] According to a first aspect of an embodiment of the present disclosure, a method for detecting indoor humidity is provided, the method comprising: acquiring sensor information collected by a sensor of an air conditioner; and obtaining humidity information of an indoor environment in which an indoor unit of the air conditioner is located based on the sensor information.

[0005] Optionally, obtaining the humidity information of the indoor environment in which the indoor unit of the air conditioner is located based on the sensor information includes: obtaining the wet-bulb temperature of the indoor environment in which the indoor unit of the air conditioner is located based on the sensor information; obtaining the humidity information of the indoor environment based on the wet-bulb temperature, wherein the humidity information is relative humidity.

[0006] Optionally, obtaining the humidity information of the indoor environment in which the indoor unit of the air conditioner is located based on the sensor information includes: determining the heat exchange efficiency of the air conditioner, the refrigerant enthalpy value of the condenser outlet of the air conditioner, the refrigerant enthalpy value of the evaporator outlet of the air conditioner and the refrigerant circulation amount of the compressor of the air conditioner based on the sensor information, wherein the sensor information includes at least a first temperature collected by a first temperature sensor arranged at the inlet of the evaporator; and determining the humidity information at least based on the heat exchange efficiency, the first temperature, the refrigerant enthalpy value of the condenser outlet, the refrigerant enthalpy value of the evaporator outlet and the refrigerant circulation amount of the compressor.

[0007] Optionally, determining the heat exchange efficiency of the air conditioner based on the sensor information includes: obtaining an actual speed of an indoor fan of the air conditioner, and a pre-calibrated maximum heat exchange efficiency of the indoor fan at a maximum speed; and determining the heat exchange efficiency of the air conditioner based on the actual speed, the maximum speed and the maximum heat exchange efficiency.

[0008] Optionally, the sensor information also includes a third temperature collected by a third temperature sensor arranged in the middle of the condenser of the air conditioner, and a fourth temperature collected by a fourth temperature sensor arranged at the condenser outlet. Determining the refrigerant enthalpy value at the condenser outlet of the air conditioner based on the sensor information includes: obtaining the condensation pressure in the middle of the condenser based on the third temperature; obtaining the subcooling degree at the condenser outlet based on the third temperature and the fourth temperature; obtaining the refrigerant enthalpy value at the condenser outlet based on the condensation pressure and the subcooling degree.

[0009] Optionally, the sensor information also includes a second temperature collected by a second temperature sensor arranged at the evaporator outlet of the air conditioner, and determining the refrigerant enthalpy value of the evaporator outlet of the air conditioner based on the sensor information includes: obtaining the evaporation pressure at the evaporator inlet based on the first temperature; obtaining the superheat at the evaporator outlet based on the first temperature and the second temperature; and obtaining the refrigerant enthalpy value at the evaporator outlet based on the evaporation pressure and the superheat.

[0010] Optionally, the sensor information also includes a second temperature collected by a second temperature sensor arranged at the evaporator outlet of the air conditioner, and determining the refrigerant circulation amount of the compressor of the air conditioner based on the sensor information includes: obtaining the evaporation pressure at the evaporator inlet based on the first temperature; obtaining the superheat at the evaporator outlet based on the first temperature and the second temperature; obtaining the refrigerant density at the evaporator outlet based on the evaporation pressure and the superheat; obtaining the operating frequency of the compressor of the air conditioner and the displacement of the compressor, and obtaining the refrigerant circulation amount of the compressor based on the refrigerant density, the operating frequency of the compressor of the air conditioner, and the displacement of the compressor.

[0011] Optionally, the humidity information is determined at least based on the heat exchange efficiency, the first temperature, the refrigerant enthalpy value of the condenser outlet, the refrigerant enthalpy value of the evaporator outlet and the refrigerant circulation volume of the compressor, including: determining the wet-bulb temperature of the indoor environment based on the heat exchange efficiency, the first temperature, the refrigerant enthalpy value of the condenser outlet, the refrigerant enthalpy value of the evaporator outlet and the refrigerant circulation volume of the compressor; determining the dry-bulb temperature of the indoor environment based on the indoor return air temperature; determining the humidity information based on the wet-bulb temperature and the dry-bulb temperature, wherein the humidity information is relative humidity.

[0012] Optionally, determining the humidity information according to the wet-bulb temperature and the dry-bulb temperature includes: obtaining a first saturated water vapor partial pressure at the dry-bulb temperature according to the dry-bulb temperature; obtaining a second saturated water vapor partial pressure at the wet-bulb temperature according to the wet-bulb temperature; obtaining a third saturated water vapor partial pressure according to the second saturated water vapor partial pressure; and obtaining the humidity information according to the first saturated water vapor partial pressure and the third saturated water vapor partial pressure.

[0013] According to a second aspect of an embodiment of the present disclosure, there is provided a device control method, the method comprising: the method comprising: controlling a target device according to the humidity information obtained according to the first aspect.

[0014] According to a third aspect of an embodiment of the present disclosure, an indoor humidity detection device is provided, the device comprising: an acquisition module, configured to acquire sensor information collected by a sensor of an air conditioner; an acquisition module, configured to acquire humidity information of an indoor environment in which an indoor unit of the air conditioner is located based on the sensor information.

[0015] According to a fourth aspect of an embodiment of the present disclosure, there is provided a device control apparatus, the apparatus comprising: a control module configured to control a target device according to the humidity information obtained in the first aspect, According to a fifth aspect of an embodiment of the present disclosure, an air conditioner is provided, comprising: a processor; and a memory for storing processor executable instructions; wherein the processor is configured to implement the steps of the method described in the first aspect when executing the instructions.

[0016] According to a sixth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the method provided in the first aspect or the second aspect of the present disclosure are implemented.

[0017] According to a seventh aspect of an embodiment of the present disclosure, a computer program product is provided, including a computer program, which implements the steps of the method described in the first aspect when executed by a processor.

[0018] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: in an air conditioner without a humidity sensor installed, the sensor of the air conditioner is reused to collect sensor information, and the humidity information of the indoor environment in which the indoor unit of the air conditioner is located is obtained based on the sensor information. By reusing the original sensor in the air conditioner, the humidity information of the indoor environment can be detected without the need to set up a separate humidity sensor, thereby reducing the cost of humidity detection.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] Figure 1 The figure is a flow chart of a method for detecting indoor humidity according to an exemplary embodiment.

[0022] Figure 2 This is the pressure-enthalpy diagram corresponding to the air conditioner.

[0023] Figure 3 yes Figure 1 Flow chart of step S120; Figure 4 The figure is a block diagram of a device for detecting indoor humidity according to an exemplary embodiment.

[0024] Figure 5 The invention is a block diagram of a device control apparatus according to an exemplary embodiment.

[0025] Figure 6 The invention is a block diagram of an air conditioner for indoor humidity detection method according to an exemplary embodiment. DETAILED DESCRIPTION

[0026] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0027] Ambient humidity has a certain impact on air conditioning cooling or heating, and some comfort control can be done in combination with ambient humidity. In related technologies, if you want to detect the humidity of the environment in which the indoor unit of the air conditioner is located, you need to install a humidity sensor on the indoor unit to collect the ambient humidity, but this will increase the cost of the air conditioner.

[0028] To solve the above problems, the present disclosure provides an indoor humidity detection method, a device control method, an apparatus, an air conditioner, a medium and a program product. When no sensor is installed in the air conditioner, other sensors in the air conditioner are reused to obtain humidity information of the indoor environment according to sensor information collected by the sensor. The specific indoor humidity detection method is described in detail in the subsequent embodiments.

[0029] Figure 1 is a flow chart of a method for detecting indoor humidity according to an exemplary embodiment. Figure 1The present disclosure provides an indoor humidity detection method, which can be applied to an indoor humidity detection device, an air conditioner, a computer-readable storage medium, and a computer program product. This embodiment takes the application to an air conditioner as an example, and the air conditioner is not equipped with a humidity sensor. Figure 1 The process shown in FIG. 1 is described in detail. Specifically, the indoor humidity detection method may include the following steps: Step S110: Acquire sensor information collected by the air conditioner sensor.

[0030] The original sensor in the air conditioner is reused to collect sensor information. The sensor is not a humidity sensor, and the sensor may include a temperature sensor, a pressure sensor, a speed sensor, etc. Correspondingly, the sensor information is not humidity information, and the sensor information may include temperature, pressure, speed, etc.

[0031] For example, the sensor includes a first temperature sensor arranged at the inlet of the evaporator, a second temperature sensor arranged at the outlet of the evaporator of the air conditioner, a third temperature sensor arranged in the middle of the condenser of the air conditioner, and a fourth temperature sensor arranged at the outlet of the condenser; the sensor information includes a first temperature T5 collected by the first temperature sensor, a second temperature T7 collected by the second temperature sensor, a third temperature T3 collected by the third temperature sensor, and a fourth temperature T4 collected by the fourth temperature sensor.

[0032] Step S120: Obtain humidity information of the indoor environment where the indoor unit of the air conditioner is located according to the sensor information.

[0033] In one embodiment, step S120 may be performed as follows: obtaining the wet-bulb temperature of the indoor environment where the indoor unit of the air conditioner is located according to the sensor information, and obtaining the humidity information of the indoor environment according to the wet-bulb temperature, wherein the humidity information is relative humidity.

[0034] Figure 2 It is the pressure-enthalpy diagram corresponding to the air conditioner, where the horizontal axis is the refrigerant enthalpy value and the vertical axis is the refrigerant pressure value. Curve L1 is the saturated liquid line, curve L2 is the electronic expansion valve isenthalpic throttling line, L3 is the evaporator evaporation pressure line, L4 is the saturated gas line, L5 is the condenser condensation pressure line, and L6 is the compressor isentropic compression line. 1 in the figure is the compressor suction state point, 2 is the compressor exhaust state point, 3 is the condenser saturated liquid state point, 4 is the condenser liquid supercooling state point, 5 is the evaporator inlet state point, 6 is the evaporator saturated gas point, and 7 is the evaporator outlet state point.

[0035] In another embodiment, see Figure 3 , step S120 may be the following steps: Step S121, determining the heat exchange efficiency of the air conditioner, the refrigerant enthalpy value at the condenser outlet of the air conditioner, the refrigerant enthalpy value at the evaporator outlet of the air conditioner and the refrigerant circulation amount of the compressor of the air conditioner based on the sensor information, wherein the sensor information at least includes a first temperature collected by a first temperature sensor arranged at the evaporator inlet.

[0036] The heat exchange efficiency KAn can be obtained in the following manner: obtaining the actual speed n of the indoor fan of the air conditioner, for example, collecting the actual speed n through a speed sensor, and obtaining the maximum heat exchange efficiency KA of the indoor fan at the maximum speed n0 which is pre-calibrated; determining the heat exchange efficiency KAn of the air conditioner according to the actual speed n, the maximum speed n0 and the maximum heat exchange efficiency KA, for example, calculating the heat exchange efficiency of the air conditioner through calculation formula (1): KAn=(n / n0)×KA(1) The sensor information also includes a third temperature T3 collected by a third temperature sensor disposed in the middle of the condenser of the air conditioner, and a fourth temperature T4 collected by a fourth temperature sensor disposed at the outlet of the condenser. The refrigerant enthalpy value H4 at the outlet of the condenser of the air conditioner is obtained in the following manner: according to the third temperature T3, the condensation pressure Pc in the middle of the condenser is obtained, and the condensation pressure Pc in the middle of the condenser is calculated by calculation formula (2): Pc=0.000000000001×T3^6-0.00000000006×T3^5+0.000000003×T3^4+0.000002×T3^3+0.0003×T3^2+0.0254×T3+0.6981 (2) The calculation formula (2) shows the corresponding relationship between the condensing pressure Pc in the middle of the condenser and the third temperature T3, which means that the third temperature T3 and the condensing pressure Pc can be converted to each other. It is not difficult to understand that if a pressure sensor is set in the middle of the condenser in the air conditioner, the condensing pressure Pc in the middle of the condenser can be collected by the pressure sensor. The condensing pressure Pc can be Figure 2 The pressure corresponding to the three points in the figure can be used to obtain the third temperature T3 corresponding to the condensation pressure Pc according to formula (2).

[0037] According to the third temperature T3 and the fourth temperature T4, the subcooling degree SC at the outlet of the condenser is obtained, and the cooling degree SC is calculated by calculation formula (3): SC=T3-T4 (3) According to the condensing pressure Pc and the subcooling degree SC, the refrigerant enthalpy value H4 at the condenser outlet is obtained. Exemplarily, multiple coefficients are set for the condensing pressure Pc, and the multiple coefficients are A1 to A10 in Table 1. The corresponding relationship between the condensing pressure Pc and the coefficient can be shown in Table 1.

[0038] Table 1

[0039] Calculate the refrigerant enthalpy H4 at the condenser outlet according to formula (4): H4=A1+(A2×Pc)+(A3×SC)+(A4×Pc^2)+(A5×Pc×SC)+(A6×SC^2)+(A7×Pc^3)+(A8×Pc^2×SC)+(A9×Pc×SC^2)+(A10×SC^3) (4) When the value of Pc can be found in the above Table 1, the coefficient in the same row as Pc in Table 1 is the coefficient corresponding to Pc. Based on Pc and the coefficients A1~A10 obtained from the table, combined with calculation formula (4), the refrigerant enthalpy value H4 at the condenser outlet can be calculated.

[0040] When the value of Pc cannot be found in the above Table 1, determine the interval Pc1~Pc2 where Pc is located according to the method of looking up Table 1. By looking up Table 1, it can be found that the coefficient in the same row as Pc1 is the coefficient of Pc1. Substitute it into the calculation formula (4) to calculate the refrigerant enthalpy value H4 corresponding to Pc1. Look up the table to find that the coefficient in the same row as Pc2 is the coefficient of Pc2. Substitute it into the calculation formula (4) to calculate the refrigerant enthalpy value H4 corresponding to Pc2. Use the difference method to calculate the refrigerant enthalpy value corresponding to Pc based on the two enthalpy values. For example, calculate the refrigerant enthalpy value H4 (2.1, 5) corresponding to Pc being 2.1 and SC being 5. According to the table, Pc = 2.1 is between 2.0 and 2.2. Combining the calculation formula (4) and Table 1, the refrigerant enthalpy value H4 (2.0, 5) corresponding to Pc = 2.0 and SC = 5 is calculated, and the refrigerant enthalpy value H4 (2.2, 5) corresponding to Pc = 2.2 and SC = 5 is calculated. Using the interpolation method, H4 (2.1, 5) = H4 (2.0, 5) - (2.1-2.0) / (2.2-2.0) × [H4 (2.0, 5) - H4 (2.2, 5)].

[0041] The sensor information at least includes a first temperature T5 collected by a first temperature sensor disposed at the evaporator inlet and a second temperature T7 collected by a second temperature sensor disposed at the evaporator outlet of the air conditioner. The refrigerant enthalpy value H7 at the evaporator outlet of the air conditioner is calculated according to the following method: According to the first temperature T5, the evaporation pressure Pe at the evaporator inlet is obtained. For example, the evaporation pressure Pe is calculated by the following calculation formula (5): Pe=0.000000000001×T5^6-0.00000000006×T5^5+0.000000003×T5^4+0.000002×T5^3+0.0003×T5^2+0.0254×T5+0.6981 (5) The calculation formula (5) shows the corresponding relationship between the evaporation pressure Pe at the evaporator inlet and the first temperature T5, which means that the first temperature T5 and the evaporation pressure Pe can be converted to each other. It is not difficult to understand that if a pressure sensor is set at the evaporator inlet in the air conditioner, the evaporation pressure Pe at the evaporator inlet can be collected by the pressure sensor. The evaporation pressure Pe can be Figure 2 The pressure corresponding to point 5 in the equation (5) can be used to obtain the first temperature T5 corresponding to the evaporation pressure Pe.

[0042] According to the first temperature T5 and the second temperature T7, the superheat SH at the evaporator outlet is obtained, and the superheat SH is calculated by the following calculation formula (6): SH=T7-T5 (6) According to the evaporation pressure Pe and the superheat SH, the refrigerant enthalpy value H7 at the evaporator outlet is obtained. Exemplarily, multiple coefficients are set for the evaporation pressure Pe, and the multiple coefficients are shown in Table 2. The corresponding relationship between the evaporation pressure Pe and the coefficient is shown in Table 2.

[0043] Table 2

[0044] According to formula (7), calculate the refrigerant enthalpy H7 at the evaporator outlet: H7=A11+(A12×P1)+(A13×SH)+(A14×P1^2)+(A15×P1×SH)+(A16×SH^2)+(A17×P1^3)+(A18×P1^2×SH)+(A19×P1×SH^2)+(A20×SH^3) (7) When the value of Pe can be found in Table 2, the coefficient in the same row as Pe in Table 2 is the coefficient corresponding to Pe. Based on Pe and the coefficients A11~A20 obtained from the table, combined with calculation formula (7), the refrigerant enthalpy value H7 at the evaporator outlet can be calculated.

[0045] When the value of Pe cannot be found in Table 2, determine the interval Pe1~Pe2 where Pe is located in Table 2 by looking up the table. By looking up Table 2, you can find the coefficient of Pe1 in the same row as Pe1, and substitute it into the calculation formula (7) to calculate the refrigerant enthalpy value H7 corresponding to Pe1. Look up the table to find the coefficient of Pe2 in the same row as Pe2, and substitute it into the calculation formula (7) to calculate the refrigerant enthalpy value H7 corresponding to Pe2. Use the difference method to calculate the refrigerant enthalpy value corresponding to Pe based on the two enthalpy values. For example, calculate the refrigerant enthalpy value H7 (0.85, 2) corresponding to Pe being 0.85 and SH being 2. According to the table, Pe = 0.85 is between 0.8 and 0.9. Combining the calculation formula (7) and Table 2, the refrigerant enthalpy value H7 (0.8, 2) corresponding to Pe = 0.8 and SH = 2 is calculated, and the refrigerant enthalpy value H7 (0.9, 2) corresponding to Pe = 0.9 and SH = 2 is calculated. Using the interpolation method, H7 (0.85, 2) = H7 (0.9, 2) - (0.9-0.85) / (0.9-0.8) × [H7 (0.9, 2) - H7 (0.8, 2)].

[0046] Optionally, the sensor information includes at least a first temperature T5 collected by a first temperature sensor disposed at the evaporator inlet and a second temperature T7 collected by a second temperature sensor disposed at the evaporator outlet of the air conditioner, and the refrigerant circulation amount m of the compressor of the air conditioner is obtained in the following manner: according to the first temperature T5, the evaporation pressure Pe at the evaporator inlet is obtained; According to the first temperature T5 and the second temperature T7, the superheat SH at the evaporator outlet is obtained. The superheat SH at the evaporator outlet can be calculated according to calculation formula (6); According to the evaporation pressure Pe and the superheat SH, the refrigerant density ρ7 at the evaporator outlet is obtained. Combined with the coefficient of the evaporation pressure Pe in Table 2, the refrigerant density ρ7 at the evaporator outlet is calculated by calculation formula (8): (8) When the value of Pe can be found in Table 2 above, the coefficient in the same row as Pe in Table 1 is the coefficient corresponding to Pe. Based on Pe and the coefficients A11~A20 obtained from the table, combined with calculation formula (8), the refrigerant density ρ7 at the evaporator outlet can be calculated.

[0047] When the value of Pe cannot be found in Table 2, the interval Pe1~Pe2 in Table 2 is determined by looking up the table. By looking up Table 2, the coefficient of Pe1 in the same row as Pe1 can be found. Substitute it into the calculation formula (8) to calculate the refrigerant density ρ7 corresponding to Pe1. By looking up the table, the coefficient of Pe2 in the same row as Pe2 can be found. Substitute it into the calculation formula (8) to calculate the refrigerant density ρ7 corresponding to Pe2. Using the difference method, the refrigerant density ρ7 corresponding to Pe is calculated based on two enthalpy values. For example, the refrigerant density ρ7 (0.85, 2) corresponding to Pe is calculated to be 0.85 and SH is 2. According to the table, it is determined that Pe=0.85 is between 0.8 and 0.9. Combined with the calculation formula (7) and Table 2, the refrigerant density ρ7 (0.8, 2) corresponding to Pe=0.8 and SH=2 is calculated, and the refrigerant density ρ7 (0.9, 2) corresponding to Pe=0.9 and SH=2 is calculated. Using the interpolation method, we can calculate that ρ7(0.85,2)=ρ7(0.9,2)-(0.9-0.85) / (0.9-0.8)×[ρ7(0.9,2)-ρ7(0.8,2)].

[0048] The operating frequency f of the compressor of the air conditioner and the displacement V of the compressor are obtained, and the refrigerant circulation amount m of the compressor is obtained according to the refrigerant density ρ7, the operating frequency f of the compressor of the air conditioner, and the displacement V of the compressor. Exemplarily, the refrigerant circulation amount m of the compressor is calculated according to calculation formula (9): m=f×V×ρ7(9) Step S122, determining the humidity information at least based on the heat exchange efficiency, the first temperature, the refrigerant enthalpy value at the condenser outlet, the refrigerant enthalpy value at the evaporator outlet, and the refrigerant circulation amount of the compressor.

[0049] In one embodiment, the wet-bulb temperature of the indoor environment is determined based on the heat exchange efficiency KAn, the first temperature T5, the refrigerant enthalpy value H4 at the condenser outlet, the refrigerant enthalpy value H7 at the evaporator outlet, and the refrigerant circulation volume m of the compressor. Based on the principle that the capacity of the refrigerant side of the evaporator of the air conditioner is equal to the capacity of the wind side of the evaporator, combined with the above content, it can be seen that the capacity of the refrigerant side of the evaporator is represented by m×(H7-H4). The wet-bulb temperature under rated refrigeration is 19°C, and the capacity of the wind side of the evaporator is represented by KA×(19-T5), then the calculation formula (10) can be obtained: m×(H7-H4)=KA×(19-T5)(10) By transforming the public calculation formula (10), we can get the calculation formula (11): KA=m×(H7-H4) / (19-T5)(11) Among them, the maximum heat transfer efficiency KA in calculation formula (11) is the heat transfer efficiency corresponding to n0 at the maximum speed of the indoor fan, and the relationship between it and the heat transfer efficiency KAn of the air conditioner corresponding to the actual speed n is shown in calculation formula (12): KAn=(n / n0)×KA(12) Combining equations (10) and (12), we obtain equation (13), as follows: m×(H7-H4)=KAn×(Ts-T5)(13) Where Ts is the wet bulb temperature.

[0050] Transform formula (13) to obtain formula (14), as follows: Ts=m×(H7-H4) / KAn+T5(14) For a one-to-one air conditioner, the wet bulb temperature is calculated as shown in formula (14).

[0051] For one-to-many air conditioners, determine the calibers of the electronic expansion valves of multiple indoor units. According to the calibers corresponding to the multiple indoor units, combined with calculation formula (14), obtain the wet-bulb temperature of the indoor environment of each indoor unit. For example, suppose there are three indoor units in cooling operation, and the three indoor units are indoor unit No. 1, indoor unit No. 2, and indoor unit No. 3. The openings of the electronic expansion valves of the three indoor units are EXV1, EXV2, and EXV3, respectively, and the maximum openings are EXV1_max, EXV2_max, and EXV3_max, respectively. The calibers of the electronic expansion valves of the three indoor units are r1, r2, and r3, respectively. The refrigerant flow rate m1 of indoor unit No. 1 is expressed by calculation formula (15), as follows: m1=m×(EXV1×r1^2 / EXV1_max) / (EXV1×r1^2 / EXV1_max+EXV2×r2^2 / EXV2_max+EXV3×r3^2 / EXV3_max) (15) Then, combined with calculation formula (15), the humidity information Ts1 of the indoor environment where indoor unit No. 1 is located is expressed by calculation formula (16), as follows; Ts1=m1×(H7-H4) / KAn+T5(16) In addition, the calculation method of the environmental information of the No. 2 indoor unit, the environmental information of the No. 3 indoor unit and the environmental information of the No. 1 indoor unit is the same, and will not be repeated here.

[0052] The dry-bulb temperature Tg of the indoor environment is determined according to the indoor return air temperature. For example, the indoor return air temperature is directly used as the dry-bulb temperature.

[0053] The humidity information Φ is determined according to the wet-bulb temperature Ts and the dry-bulb temperature Tg, wherein the humidity information is relative humidity.

[0054] As one way, the humidity information Φ is obtained in the following way: according to the dry bulb temperature Tg, the first saturated water vapor partial pressure at the dry bulb temperature is obtained. Exemplarily, the dry bulb temperature Tg in Celsius is converted into a dry bulb temperature Tgk in Kelvin temperature. The dry bulb temperature Tgk can be expressed by calculation formula (17) as: Tgk=Tg+273.15(17) The first saturated water vapor partial pressure Pq,b is expressed by formula (18): Pq,b=EXP(C15 / Tgk+C16+C17×Tgk+C18×Tgk^2+C19×Tgk^3+C20×LN(Tgk)) (18) Wherein, the unit of the first saturated water vapor partial pressure Pq,b is Pa, and C15, C16, C17, C18, C19 and C20 in the calculation formula (18) are all constants. C15 can be -5800.2206, C16 can be 1.3914993, C17 can be -0.04860239, C18 can be 4.17648E-05, C19 can be -1.44521E-08, and C20 can be 6.5459673.

[0055] According to the wet bulb temperature Ts, the second saturated water vapor partial pressure at the wet bulb temperature is obtained. Exemplarily, the wet bulb temperature Ts is in Celsius, and the wet bulb temperature Ts in Celsius is converted to the wet bulb temperature Tsk in Kelvin. The wet bulb temperature Tsk is expressed by calculation formula (19): Tsk=Ts+273.15 (19) The second saturated water vapor partial pressure P*q,b is expressed by formula (20): P*q,b=EXP(C15 / Tsk+C16+C17×Tsk+C18×Tsk^2+C19×Tsk^3+C20×LN(Tsk)) (20) The unit of the second saturated water vapor partial pressure P*q,b is Pa.

[0056] According to the second saturated water vapor partial pressure P*q,b, the third saturated water vapor partial pressure Pq is obtained. The third saturated water vapor partial pressure Pq is expressed by calculation formula (21): Pq=P*q,b-0.000667×(Tg-Ts)×B (21) Among them, the unit of the third saturated water vapor partial pressure Pq is Pa, B is the standard atmospheric pressure, and the value of B is 101325Pa.

[0057] According to the first saturated water vapor partial pressure Pq,b and the third saturated water vapor partial pressure Pq, the humidity information Φ is obtained, and the humidity information Φ is the relative humidity. The humidity information Φ is expressed by calculation formula (22): Ф=Pq / Pq,b(22) Humidity information is used for indoor comfort-related control, for example, to control the operation of indoor target devices. Humidity information can also be used for display to prompt users of the humidity of the indoor environment, for example, by displaying humidity information on a display panel of an air conditioner.

[0058] The indoor humidity detection method provided in this embodiment reuses the sensor of the air conditioner to collect sensor information in an air conditioner without a humidity sensor installed, and obtains the humidity information of the indoor environment in which the indoor unit of the air conditioner is located based on the sensor information. The original sensor in the air conditioner is reused, and the indoor environment humidity information can be detected without setting up a humidity sensor separately, thereby reducing the cost of humidity detection.

[0059] The present disclosure also provides a device control method, the method comprising: controlling a target device according to the humidity information obtained in the above embodiment.

[0060] Exemplarily, the target device may be an air conditioner, which obtains temperature information matching the humidity information, controls the operation of the air conditioner through the temperature information, and improves the comfort level of indoor users in terms of humidity and temperature.

[0061] The target device may not be an air conditioner. For example, the target device may be a humidifier or a dehumidifier. When the humidity represented by the humidity information is greater than the preset humidity, the dehumidifier is controlled to work so as to maintain the indoor humidity at the preset humidity to prevent condensation. Or when the humidity represented by the humidity information is less than the preset humidity, the humidifier is controlled to work so as to maintain the indoor humidity at the preset humidity to improve the user's comfort.

[0062] The device control method provided in this embodiment controls the operation of the target device in a linked manner according to humidity information to improve the comfort of the indoor environment.

[0063] Based on the same inventive concept, the present disclosure provides an indoor humidity detection device, please refer to Figure 4 , the indoor humidity detection device 200 comprises: An acquisition module 210 is configured to acquire sensor information collected by a sensor of the air conditioner; The obtaining module 220 is configured to obtain humidity information of the indoor environment where the indoor unit of the air conditioner is located according to the sensor information.

[0064] Optionally, the obtaining module 220 includes: A first wet-bulb temperature acquisition module is configured to obtain the wet-bulb temperature of the indoor environment where the indoor unit of the air conditioner is located according to the sensor information; The first humidity information acquisition module is configured to obtain humidity information of the indoor environment according to the wet-bulb temperature, wherein the humidity information is relative humidity.

[0065] Optionally, the obtaining module 220 includes: a parameter acquisition module, configured to determine the heat exchange efficiency of the air conditioner, the refrigerant enthalpy value of the condenser outlet of the air conditioner, the refrigerant enthalpy value of the evaporator outlet of the air conditioner, and the refrigerant circulation amount of the compressor of the air conditioner according to the sensor information, wherein the sensor information at least includes a first temperature collected by a first temperature sensor arranged at an inlet of the evaporator; The second humidity information acquisition module is configured to determine the humidity information based on at least the heat exchange efficiency, the first temperature, the refrigerant enthalpy value at the condenser outlet, the refrigerant enthalpy value at the evaporator outlet, and the refrigerant circulation amount of the compressor.

[0066] Optionally, the parameter acquisition module includes: A speed acquisition module, configured to acquire an actual speed of the indoor fan of the air conditioner and a pre-calibrated maximum heat exchange efficiency of the indoor fan at a maximum speed; The heat exchange efficiency acquisition module is configured to determine the heat exchange efficiency of the air conditioner according to the actual rotation speed, the maximum rotation speed and the maximum heat exchange efficiency.

[0067] Optionally, the sensor information further includes a third temperature collected by a third temperature sensor disposed in the middle of the condenser of the air conditioner, and a fourth temperature collected by a fourth temperature sensor disposed at an outlet of the condenser, and the parameter acquisition module includes: a condensing pressure acquisition module, configured to obtain the condensing pressure in the middle of the condenser according to the third temperature; a subcooling degree acquisition module, configured to obtain the subcooling degree of the condenser outlet according to the third temperature and the fourth temperature; The first refrigerant enthalpy value acquisition module is configured to obtain the refrigerant enthalpy value at the condenser outlet according to the condensing pressure and the supercooling degree.

[0068] Optionally, the sensor information further includes a second temperature collected by a second temperature sensor disposed at an evaporator outlet of the air conditioner, and the parameter acquisition module includes: an evaporation pressure acquisition module, configured to obtain the evaporation pressure at the evaporator inlet according to the first temperature; a superheat acquisition module, configured to obtain the superheat at the evaporator outlet according to the first temperature and the second temperature; The second refrigerant enthalpy value acquisition module is configured to obtain the refrigerant enthalpy value at the evaporator outlet according to the evaporation pressure and the superheat degree.

[0069] Optionally, the sensor information further includes a second temperature collected by a second temperature sensor disposed at an evaporator outlet of the air conditioner, and the parameter acquisition module includes: an evaporation pressure obtaining module, configured to obtain the evaporation pressure at the evaporator inlet according to the first temperature; a superheat acquisition module, configured to obtain the superheat at the evaporator outlet according to the first temperature and the second temperature; a refrigerant density obtaining module, configured to obtain the refrigerant density at the evaporator outlet according to the evaporation pressure and the superheat; The refrigerant circulation amount obtaining module is configured to obtain the operating frequency of the compressor of the air conditioner and the displacement of the compressor, and obtain the refrigerant circulation amount of the compressor according to the refrigerant density, the operating frequency of the compressor of the air conditioner, and the displacement of the compressor.

[0070] Optionally, the second humidity information acquisition module includes: a second wet-bulb temperature acquisition module, configured to determine the wet-bulb temperature of the indoor environment according to the heat exchange efficiency, the first temperature, the refrigerant enthalpy value at the condenser outlet, the refrigerant enthalpy value at the evaporator outlet, and the refrigerant circulation amount of the compressor; A dry-bulb temperature acquisition module, configured to determine the dry-bulb temperature of the indoor environment according to the indoor return air temperature; The third humidity information acquisition module is configured to determine the humidity information according to the wet-bulb temperature and the dry-bulb temperature, wherein the humidity information is relative humidity.

[0071] Optionally, the third humidity information acquisition module includes: A first saturated water vapor partial pressure acquisition module is configured to obtain a first saturated water vapor partial pressure at the dry-bulb temperature according to the dry-bulb temperature; A second saturated water vapor partial pressure acquisition module is configured to obtain a second saturated water vapor partial pressure at the wet-bulb temperature according to the wet-bulb temperature; A third saturated water vapor partial pressure acquisition module is configured to obtain a third saturated water vapor partial pressure according to the second saturated water vapor partial pressure; The humidity information obtaining module is configured to obtain the humidity information according to the first saturated water vapor partial pressure and the third saturated water vapor partial pressure.

[0072] The present disclosure also provides a device control device, see Figure 5 , the device control device 300 includes: The control module 310 is configured to control the target device according to the humidity information obtained above.

[0073] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0074] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon, and the program instructions, when executed by a processor, implement the steps of the method provided by the present disclosure.

[0075] Figure 6 800 is a block diagram of an air conditioner for indoor humidity detection method according to an exemplary embodiment. For example, the air conditioner 800 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0076] See also Figure 6 The air conditioner 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output interface 812 , a sensor component 814 , and a communication component 816 .

[0077] The processing component 802 generally controls the overall operation of the air conditioner 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0078] The memory 804 is configured to store various types of data to support the operation of the air conditioner 800. Examples of such data include instructions for any application or method operating on the air conditioner 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0079] The power supply component 806 provides power to various components of the air conditioner 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the air conditioner 800.

[0080] The multimedia component 808 includes a screen that provides an output interface between the air conditioner 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the air conditioner 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0081] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the air conditioner 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0082] The input / output interface 812 provides an interface between the processing component 802 and the peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0083] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the air conditioner 800. For example, the sensor assembly 814 can detect the on / off state of the air conditioner 800, the relative positioning of the components, such as the display and keypad of the air conditioner 800, and the sensor assembly 814 can also detect the position change of the air conditioner 800 or a component of the air conditioner 800, the presence or absence of user contact with the air conditioner 800, the orientation or acceleration / deceleration of the air conditioner 800, and the temperature change of the air conditioner 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0084] The communication component 816 is configured to facilitate wired or wireless communication between the air conditioner 800 and other devices. The air conditioner 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0085] In an exemplary embodiment, the air conditioner 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0086] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of the air conditioner 800 to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0087] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for executing the above method when executed by the programmable device.

[0088] It should be understood that, unless otherwise specifically noted, the features of some embodiments of the various present disclosures described herein may be combined with each other. As used herein, the term "and / or" includes any one of the related listed items and any combination of any two or more; similarly, "at least one of . . . " includes any one of the related listed items and any combination of any two or more.

[0089] Although terms such as "first", "second" and "third" can be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, component, region, layer or section from another component, component, region, layer or section. Therefore, without departing from the teachings of each example, the first component, component, region, layer or section mentioned in the examples described herein may also be referred to as the second component, component, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may expressly or implicitly include at least one of the features. In the description herein, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0090] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

[0091] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for detecting indoor humidity, characterized in that: The method comprises: Obtain sensor information collected by the air conditioner's sensor; The humidity information of the indoor environment where the indoor unit of the air conditioner is located is obtained according to the sensor information.

2. The method according to claim 1, characterized in that The step of obtaining humidity information of an indoor environment in which the indoor unit of the air conditioner is located according to the sensor information includes: According to the sensor information, obtaining the wet-bulb temperature of the indoor environment where the indoor unit of the air conditioner is located; Humidity information of the indoor environment is obtained according to the wet-bulb temperature, wherein the humidity information is relative humidity.

3. The method according to claim 1, characterized in that The step of obtaining humidity information of an indoor environment in which the indoor unit of the air conditioner is located according to the sensor information includes: Determine the heat exchange efficiency of the air conditioner, the refrigerant enthalpy value of the condenser outlet of the air conditioner, the refrigerant enthalpy value of the evaporator outlet of the air conditioner, and the refrigerant circulation amount of the compressor of the air conditioner according to the sensor information, wherein the sensor information at least includes a first temperature collected by a first temperature sensor disposed at an inlet of the evaporator; The humidity information is determined based on at least the heat exchange efficiency, the first temperature, the refrigerant enthalpy value at the condenser outlet, the refrigerant enthalpy value at the evaporator outlet, and the refrigerant circulation amount of the compressor.

4. The method according to claim 3, characterized in that The determining the heat exchange efficiency of the air conditioner according to the sensor information includes: Obtaining an actual rotation speed of an indoor fan of the air conditioner and a pre-calibrated maximum heat exchange efficiency of the indoor fan at a maximum rotation speed; The heat exchange efficiency of the air conditioner is determined according to the actual rotation speed, the maximum rotation speed and the maximum heat exchange efficiency.

5. The method according to claim 3, characterized in that: The sensor information also includes a third temperature collected by a third temperature sensor disposed in the middle of the condenser of the air conditioner, and a fourth temperature collected by a fourth temperature sensor disposed at the condenser outlet. The determining of the refrigerant enthalpy value at the condenser outlet of the air conditioner according to the sensor information includes: According to the third temperature, obtaining the condensation pressure in the middle of the condenser; Obtaining a degree of subcooling at an outlet of the condenser according to the third temperature and the fourth temperature; The refrigerant enthalpy value at the condenser outlet is obtained according to the condensing pressure and the supercooling degree.

6. The method according to claim 3, characterized in that The sensor information further includes a second temperature collected by a second temperature sensor disposed at an outlet of the evaporator of the air conditioner, and determining the enthalpy value of the refrigerant at the outlet of the evaporator of the air conditioner according to the sensor information includes: obtaining an evaporation pressure at an inlet of the evaporator according to the first temperature; obtaining a superheat degree at an outlet of the evaporator according to the first temperature and the second temperature; The refrigerant enthalpy value at the evaporator outlet is obtained according to the evaporation pressure and the superheat.

7. The method according to claim 3, characterized in that The sensor information further includes a second temperature collected by a second temperature sensor disposed at an outlet of an evaporator of the air conditioner, and determining the refrigerant circulation amount of the compressor of the air conditioner according to the sensor information includes: obtaining an evaporation pressure at an inlet of the evaporator according to the first temperature; obtaining a superheat degree at an outlet of the evaporator according to the first temperature and the second temperature; Obtaining the refrigerant density at the evaporator outlet according to the evaporation pressure and the superheat; The operating frequency of the compressor of the air conditioner and the displacement of the compressor are obtained, and the refrigerant circulation amount of the compressor is obtained according to the refrigerant density, the operating frequency of the compressor of the air conditioner, and the displacement of the compressor.

8. The method according to claim 3, characterized in that The determining the humidity information at least based on the heat exchange efficiency, the first temperature, the refrigerant enthalpy value at the condenser outlet, the refrigerant enthalpy value at the evaporator outlet, and the refrigerant circulation amount of the compressor includes: Determining the wet-bulb temperature of the indoor environment according to the heat exchange efficiency, the first temperature, the refrigerant enthalpy value at the condenser outlet, the refrigerant enthalpy value at the evaporator outlet, and the refrigerant circulation amount of the compressor; determining a dry-bulb temperature of the indoor environment according to the indoor return air temperature; The humidity information is determined according to the wet-bulb temperature and the dry-bulb temperature, wherein the humidity information is relative humidity.

9. The method according to claim 8, characterized in that The determining the humidity information according to the wet-bulb temperature and the dry-bulb temperature includes: According to the dry-bulb temperature, obtaining a first saturated water vapor partial pressure at the dry-bulb temperature; According to the wet-bulb temperature, obtaining a second saturated water vapor partial pressure at the wet-bulb temperature; According to the second saturated water vapor partial pressure, obtaining a third saturated water vapor partial pressure; The humidity information is obtained according to the first saturated water vapor partial pressure and the third saturated water vapor partial pressure.

10. A device control method, characterized in that: The method comprises: Control the target device according to the humidity information obtained according to any one of claims 1 to 9.

11. An indoor humidity detection device, characterized in that: The device comprises: An acquisition module, configured to acquire sensor information collected by a sensor of the air conditioner; The obtaining module is configured to obtain humidity information of the indoor environment where the indoor unit of the air conditioner is located according to the sensor information.

12. A device control device, characterized in that: The device comprises: The control module is configured to control the target device according to the humidity information obtained according to any one of claims 1 to 9.

13. An air conditioner, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to implement the steps of the method described in any one of claims 1 to 9 when executing the instruction.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method described in any one of claims 1 to 10 are implemented.

15. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 10.

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