CN1924470A - Air conditioner controller with comfortable, energy-saving and healthy functions - Google Patents

Air conditioner controller with comfortable, energy-saving and healthy functions Download PDF

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CN1924470A
CN1924470A CN 200510060621 CN200510060621A CN1924470A CN 1924470 A CN1924470 A CN 1924470A CN 200510060621 CN200510060621 CN 200510060621 CN 200510060621 A CN200510060621 A CN 200510060621A CN 1924470 A CN1924470 A CN 1924470A
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temperature
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indoor
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conditioning
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CN100449217C (en
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汤一平
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Zhejiang University of Technology ZJUT
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Abstract

This invention relates to one air conditioning control device which comprises the following parts: micro processor, indoor temperature sensor, moisture sensor, outdoor start circuit, outdoor temperature data collection device, outdoor supply power occupancy controller and memory heat PMV and temperature and moisture degree relative sequence and relative memory module; the micro processor comprises current temperature control module, indoor environment data read module, heat PMW compute module, supply stop circle set module, circle set time module, outdoor supply occupancy compute module.

Description

Air conditioning control device with comfortable, energy-conservation and healthy functions
(1) technical field
The invention belongs to the application in air-conditioning control of Computer Control Technology, air conditioner energy saving technology, electronic technology and the communication technology, especially a kind of air conditioning control device with comfortable, energy-conservation and healthy functions.
(2) background technology
Owing to electricity shortage, the hardship of serious electric network power-fail is tasted varieties of in the city in recent years.The exhausting of the energy affects that energy prices on every side are higher and problem continues to worsen that each is economized, and particularly the enterprise of coastal economy comparison developed regions is just enduring the hardship of the energy to the fullest extent, and in electricity shortage, enterprise can only move 3 to 4 days weekly.Manufacturing development is added increasing population and is used air-conditioning, and this double factor has promoted energy-consuming to increase apace, makes energy problem become national and even global problem.The energy use efficiency of China is 1/3 of a developed country at present, and a large amount of energy are being consumed as idle work.Energy problem has become the great bottleneck of restriction China economic development.The contradiction of electricity shortage when also just aggravating peak of power consumption along with the increasing air-conditioning use of growth in the living standard.Because the seasonality of air conditioning electricity, period and explosive, some electric power expert is referred to as " the electrical network killer " who influences safe power supply with it.
Little air-conditioning has become the large electricity consumer, and concerning the each household resident, this is not a big numeral, but calculates the air-conditioning in the whole nation, and numeral is just surprisingly big.The statistics of China refrigerating and air conditioning industry association shows, China every one hundred houses family air-conditioning installation amount was 61.79 in 2003, National urban family is about 1.2 hundred million, Urban House room air conditioner owning amount is 7,400 ten thousand, the air-conditioning electricity needs is about 7,500 ten thousand kilowatts, is about about 20% of national generating capacity in 2003.Add the power load of central air-conditioning, add up to 12,500 ten thousand kilowatts, account for 33% of national installed power.Statistics shows that in East China Power Grid peak load summer in 2004, the ratio of air-conditioning temperature-reducing load surpasses 30%, and Beijing, Shanghai surpass 40%, and Hong Kong has reached 60%.By every year the quiet 1,700 ten thousand cover air-conditionings that increase calculate, present Urban House room air conditioner owning amount will be above 100,000,000 in 2005 in China, if supposing the annual time of using of every air-conditioning is words about 500 hours, 1000 watts of power consumption of 100,000,000 cover average every covers of air-conditioning are guarded calculating so, and this just will consume 500*1*1000-=1000 hundred million degree with regard to family's air-conditioning.Because the seasonality of air conditioning electricity, period and explosive, add air conditioner load near and surpass whole network load 40% and become seasonal large electricity consumer, and the frequency modulation air-conditioning that uses has at present increased energy consumption when peak of power consumption, therefore need have a kind of technology to come mild peak of power consumption in the controller of air-conditioning, this is extremely important to power grid security.
In recent years, severe power shortage has appearred in 20 several provinces and cities, some is local even the power cuts to limit consumption measure just do not occurred to summer, 26 ℃ of air conditioner energy saving activities were proposed in 2005, also some department limits indoor temperature by administration means, the way of this restriction indoor temperature has played certain effect to alleviating electricity supply and demand contradiction, but on way science not.Although 26 ℃ of thermal comfort temperature that to be most of people think, but it is hypothetical, to satisfy 4 environmental factors (temperature, relative humidity, on every side show mean radiant temperature and indoor gentle breeze speed) and 2 individual factors (activity, clothing situation) as much as possible simultaneously from the angle of thermal comfort angle, energy-conservation angle, healthy angle, regional environment, this is not with the problem of simple administration means with regard to solving, the problem that needs means law, administrative, science and technology to solve jointly.
Aspect weather environment, China is vast in territory, geographical position, each department difference, be subjected to ambient influnences such as sunshine, temperature in the environment, relative humidity all had a local climate Changing Pattern in 1 year, also have diurnal variation rule, the temperature in one day to raise equally or descend to claim the temperature diurnal variation.The seasonal variations of highest temperature time of occurrence is very little, general summer later on, winter earlier, general phase difference of half hour.But with changing season greatly, but this mainly is because at sunrise remarkable seasonal variations is arranged to the time of occurrence of the lowest temperature, is example with Harbin, and lowest temperature time of occurrence shifts to an earlier date from the winter to the summer significantly, is delayed by Xia Xiangdong.The lowest temperature June the earliest appearred in sunrise earlier than 5 o'clock, face sunrise then is no earlier than at 7 o'clock and the lowest temperature occurs December at the latest, and the summer in winter differs and can reach more than 2 hours.City temperature generally occurred at afternoon 13 to 15 o'clock in one day, and the face lowest temperature then occurred before sunrise in 5 to 6 o'clock.The temperature diurnal variation is represented with daily temperature range.In promptly one day the difference of maximum temperature value and minimum claim " daily temperature range ".The place that China's daily temperature range is little is in island and coastal area.Enter continent daily difference and increase rapidly, south because of the moistening daily temperature range of weather little, from the Sichuan Basin, east to two sides, the Changjiang river annual daily difference have only about 8 ℃; Cross Huaihe River, Qinling Mountains weather and become dry, annual daily difference just increases to more than 10 ℃.Mostly within 10 to 12 ℃, the west and south, northeast and Inner Mongol weather are dry more in the south in the North China Plain, northeast, and daily difference is generally more than 12 to 14 ℃.The Northwest generally all surpasses 14 ℃ in the basin except that the mountain area.The difference of same humidity will inevitably have influence on hotness, the thermal comfort of human body.The most basic effect of air-conditioning is the temperature of regulating in the local environment, makes people feel thermal comfort.And at present the control and the use aspect of air-conditioning are not taken into account these environmental factors.Simultaneously live in certain regional crowd for a long time difference is also arranged on hotness.
Aspect people's health and thermal comfort, when indoor temperature is too high, can influence people's body heat regulation function, cause that owing to heat radiation is bad body temperature rising, vasodilation, pulse are accelerated, heart rate quickens.In winter, if indoor temperature often remains on more than 25 ℃, the people is will refreshing tired power weary, brain dizziness, thought slowness, poor memory.Simultaneously, because the indoor/outdoor temperature-difference great disparity, human body is difficult to adapt to, and suffers from cold easily.If indoor temperature is low excessively, the human metabolism function is descended, pulse, breathing are slowed down, and veins beneath the skin shrinks, and skin is overstretched, and the resistance of respiratory mucosa weakens, and brings out breathing problem easily.Therefore, generally, be decided to be 11 ℃ and 32 ℃ respectively the ceiling temperature of people to the lower limit temperature of " cold tolerance " and " heat tolerance ".Summer, when indoor humidity is excessive, can suppress human-body radiating, make the people feel very sultry, irritated.Winter, when indoor humidity is big, then can quicken the heat conduction, make the people feel sombre, depressed.Indoor humidity is crossed when low, and because of the moisture of upper respiratory tract mucosa scatters and disappears in a large number, the people can feel that dry, tongue are dry, even abscess of throat, hoarseness and nosebleed etc., and easily catches a cold.Therefore, the relative humidity higher limit should not surpass 80%, and lower limit should not be lower than 30%.
Traditional motherland medical science calls six gas to " wind, cold, heat, wet, dry, fire ", and in fact, this six gas just air is mobile, the temperature height, the reflection of humidity size, when six gas generation cataclysms or when resistance of human body descend to surpass adaptive capacity, six gas just can become and cause sick factor.Temporal all has " degree ", crosses " degree " and then can go over to the opposite side.The birth of air-conditioning has brought many convenience for our production, life, has brought again such as acute infectious disease, anaphylactia and beyond thought negative effects such as " ill building syndromes " owing to cross " degree ".This main cause is that the application point of present air-conditioning system is indoor air, though the temperature of room air is an important indicator that influences people's thermal comfort, but under different environmental conditions and individual factor situation, be unscientific as the application point of air-conditioning system only with the adjusting of indoor air temperature.Therefore consider on the air-conditioning control strategy, must can control " degree " from health perspectives, allow air-conditioner controller help the people automatically to get hold of this " degree ", according to external environment and temperature at home, the variation of humidity, make various ambient temperature and humidity adjusting devices operate in comfortable, healthy, energy-conservation comprehensive optimum state.
Aspect hotness, investigation result to the hotness of ground different crowds such as China south under summer non-air conditioner surroundings is found, the crowd of this area has higher ability to bear to high temperature, actual measurement hotness value is lower than consensus forecast ballot (PMV) calculated value, and the crowd who does not use air-conditioning is to the tolerance of the heat crowd's height than frequent use air-conditioning.The acceptable environment temperature of crowd can suitably improve the operation of air conditioner temperature up to 30.7 ℃, and the energy saving effect that brings thus also can not be ignored.
Aspect the operation of present air-conditioning, the air-conditioning effect of radiation and wind speed and energy-saving effect also do not cause enough attention in the operation of air-conditioning system and the adjustment process.Produced this cold, that this heat is or not drawback of air-conditioning.
Why traditional air-conditioning system control method can not satisfy demand for thermal comfort, and the underlying cause is that the application point of air-conditioning system is the thermal comfort sense of indoor air rather than human body.The drawback that is showed is not mainly reflected in the following aspects in practice: 1) not directly, not rapid; 2) uncomfortable; 3) not energy-conservation.Because with the air themperature is application point, not only wind speed and mean radiant temperature are not subjected to the control of air-conditioner control system, and the control of air condition (temperature, humidity) is not subjected to the restriction of human thermal comfort to concerning between these factors yet.
Realize the unification of comfortableness, health and the energy saving of the control of air-conditioning system thermal comfort index, must start with from the working method and the application point of air-conditioning.Relatively the way of science is: 1) the confinement cells internal-external temperature difference is adjusted setting value at room temperature according to the highest temperature of weather forecast within 8 ℃, and the adjustment function of drying is adjusted the indoor temperature setting value automatically according to the Changing Pattern of daily temperature according to the relative humidity situation; 2) air ratio adds dehumidification function automatically than humid region (southern area of China), and refrigerating function is mainly used in the dry area (northern area of China) of air ratio; 3) thermal comfort is a kind of state of consciousness to the environment satisfaction that interrelates with physiology, if the power-saving method that adopted to people's hot comfort feel do not have much affect, be thumping majority people acceptable; 4) use air-conditioning can reduce the tolerance of human body for a long time to heat, people use air-conditioning to lack science especially at present, simple " thermal comfort " result that pursues has sacrificed health, therefore not original thermostatic control to the control of air-conditioning but control with human thermal sensation's Mathematical Modeling, finally reach and satisfying under the thermal comfort situation of different crowd at different regions, different weather conditions, can not occur common air conditioner disease at present in the time of using electricity wisely again; 5) keep the fresh and mobile of room air, the clean level of the screen pack of air-conditioning and economize on electricity and air-conditioning user's health all has close getting in touch, and keeps the regular cleaning of air-conditioning filter net to help energy-conservation and healthy; 6) because the seasonality of air conditioning electricity, period and explosive also must relax the air conditioning electricity peak that happens suddenly owing to climate reasons with a kind of technological means.
Under the certain situation of human body metabolism rate and clothing thermal resistance, by controlling four thermal and humidity environment parameters simultaneously, air themperature, humidity, wind speed and mean radiant temperature are keeping the thermal comfort index value to be in making under the situation within a certain scope energy consumption minimum of air-conditioning system.Thermal comfort index is the achievement in research to the relation of each constituent element of thermal and humidity environment and human thermal comfort sense, and each element that it will constitute thermal and humidity environment is associated with fixing computing formula or computational methods with the thermal comfort sense of human body.Consensus forecast ballot (PMV) is related all six influence the factor of human thermal comfort and the relation between the human thermal sensation, can think approximate simulation to the human thermal sensation.People's thermal comfort sense is not subjected to the influence of temperature or air humidity or three kinds of factors of wind speed merely, but the result of three's comprehensive function.Measure by experiment, the most pleasant indoor temperature and humidity is: winter temperature is 18 to 25 ℃, and humidity is 30% to 80%; Summer temperature is 23 to 28 ℃, and humidity is 30% to 60%.The people who feels comfortably cool in this scope accounts for more than 95%.To the restriction of wind speed, realize the energy-conservation of air-conditioning system by the air-conditioning effect that improves indoor temperature setting value performance wind speed in the winter time in summer.
Thermal comfort index control can realize the air-conditioning system application point by the transfer of room air to the people, can also greatly bring into play the energy-saving potential of existing air-conditioning system simultaneously.Analysis to existing indoor environment parameter and standard finds that existing air-conditioning standard not only many times can not satisfy the indoor human body demand for thermal comfort, and has ignored the energy-saving potential of air-conditioning system.
Under heating cycle, the every reduction of indoor temperature can save energy 5-10% for 1 ℃; Under the cooling operating mode, every rising I ℃ can save energy 10-20%.Therefore in air-conditioning system, introduce thermal comfort index control, energy-conservation significant for system.Every 1 degree electricity of thermal power generation at present discharging carbon dioxide 0.8-2.5 kilogram, the price of carbon dioxide discharge-reduction quota per ton is about 4 dollars on international carbon element market, save kilowatt-hour, just be equivalent to save the water purification of 0.4 kilogram of standard coal and 4 liters, also can reduce the carbon dioxide of about 0.27 kilogram dust, 0.8-2.5 kilogram and 0.037 kilogram dischargings such as sulfur dioxide.Can not only save a large amount of valuable energy as society by adopting scientific method to use air-conditioning to reach using electricity wisely, also alleviate the pressure of environment simultaneously greatly, significant.
Mainly be to make indoor temperature and the temperature that sets reach unanimity to the control of air-conditioning before the present invention makes by the action that is arranged on the off-premises station that air-conditioning temperature inside sensor comes temperature in the sensing chamber to compare with the temperature that sets to control air-conditioning, as shown in Figure 1, this control mode is owing to adopted single temperature as the control action point, the many drawbacks such as this is cold, whether this heat or not, not energy-conservation that just inevitably produce air-conditioning make many air-conditioning users be difficult to correctly, rationally, scientifically use air-conditioning.Particularly work as indoor/outdoor temperature-difference and surpass under 10 ℃ of situations, the people knows from experience and feels under the weather, and suffers from various air conditioner diseases easily, has also wasted a large amount of electric energy simultaneously.Therefore according to the environmental factor and the individual factor of each air conditioner user, it is the important topic of this patent that present temperature adjustment air-conditioning upgrade is become comfort air conditioning, energy-saving type air conditioner, health-care air-conditioner.
(3) summary of the invention
Rest on the deficiency that simple temperature is controlled, comfortableness is poor, not energy-conservation, the user suffers from air conditioner disease easily in order to overcome existing air conditioning control device, the present invention makes operation of air conditioner on the equalization point of comfortableness, energy saving and health from air-flow, temperature, the air humidity combination in the control room, and a kind of air conditioning control device with comfortable, energy-conservation and healthy functions is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of have comfortable, the air conditioning control device of energy-conservation and healthy functions, described control device comprises microprocessor, be used to detect the indoor temperature transmitter of indoor temperature, be used to detect the humidity sensor of indoor humidity, the off-premises station start-up circuit, described microprocessor comprises temperature control modules, described temperature control modules comprises that temperature is provided with the unit, the temperature comparing unit, described indoor temperature transmitter, the output that temperature is provided with the unit connects the temperature comparing unit, the output of described temperature comparing unit connects the off-premises station start-up circuit, and described air conditioning control device also comprises the outdoor temperature data acquisition unit that is used to detect outdoor temperature, be used to set the occupancy controller of off-premises station power supply dutycycle and be used to store hot comfort PMV and temperature, the memory module of the corresponding sequence of humidity and hot comfort and the corresponding sequence of dutycycle; Described microprocessor also comprises: the indoor and outdoor surroundings data read module is used to read the data of indoor temperature transmitter, humidity sensor, outdoor temperature data acquisition unit, indoor set wind speed collector; Hot comfort PMV computing module is used for the wind speed according to indoor temperature value, humidity value, indoor set, and the wind speed of described indoor set is converted to equivalent temperature T a,, calculate hot comfort PMV according to the corresponding sequence of hot comfort with equivalent temperature, humidity; The supply stop circle setting module is used to set the dutycycle power-up period of off-premises station; Cycle zero-time setting module is used for setting at random the zero-time of the dutycycle power-up period of current off-premises station power supply; Off-premises station power supply dutycycle computing module is used for the hot comfort that obtains according to above-mentioned, according to the corresponding sequence of hot comfort with dutycycle, calculates the off-premises station dutycycle of powering; The output of described off-premises station power supply dutycycle computing module connects the power supply occupancy controller.
Further, described comfort level PMV represents with following formula (1) with the corresponding sequence of dutycycle:
rate ( % ) = t off t on + t off * 100 = f 1 ( PMV ) where , T out - T in ≥ 8 , rate ( % ) = 85 . . . ( 1 )
Wherein, f 1Represented hot comfort and the functional relation of interrupting dutycycle output, pmv value is the pmv value that calculates by indoor temperature, humidity and wind conditions, surpasses 8 when spending when pmv value differs near 0 the time or at indoor/outdoor temperature-difference, and dutycycle is 85; t OnIt is "open" state perdurabgility in the supply stop circle; t OffIt is "off" state perdurabgility in the supply stop circle.
Further again, described equivalent temperature T aComputational methods, its formula is (2), (3);
ΔT=6*(v-0.25)-(v-0.25) 2??????(2)
T a=T in-measure-ΔT????????????(3)
Wherein, v is the wind speed numerical value of indoor set, and unit is a meter per second, and Δ T be for can allow increment, T aBe equivalent temperature, T In-measureBe present indoor temperature value.
Further, described microprocessor also comprises the power saving rate measurement module, and the electric power thus supplied, the temperature control modules electric power thus supplied that are used for according to the off-premises station power supply calculate power saving rate, and its formula is (4), (5):
T two - off = Σ 1 n t TC - off when t off . . . ( 4 ) ;
Arate ( % ) = Σ 1 n t off - T two - off Σ 1 n t on + Σ 1 n t off * 100 . . . ( 5 ) ;
Wherein, ∑ t TC-offBe owing to "off" state summation perdurabgility that temperature control modules produced, t in the supply stop circle OffIt is the "off" state time of temperature control modules in the supply stop circle; ∑ t OffBe illustrated in the supply stop circle, temperature control modules control is "off" state perdurabgility down, ∑ t OnBe illustrated in the supply stop circle, temperature control modules control is "open" state perdurabgility down, T Two-offBe illustrated in the one-period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.
The circuit that described off-premises station start-up circuit moves with relay or SCR control off-premises station " ON/OFF ".
Described off-premises station power supply dutycycle computing module calculates off-premises station power supply dutycycle by the interpolation look-up table.
Or described off-premises station power supply dutycycle computing module calculates off-premises station power supply dutycycle by control algolithm, and described control algolithm is represented by formula (6):
Wherein, M={m 1, m 2, m 3Represent the set of above-mentioned three indexs, wherein m 1Be the hot comfort index, use the PMV numeric representation, human body felt comfortably cool between its scope was controlled at 0 to 1 when summer, and it is high more to tend to 0 comfort level more; m 2Be actual power saving rate index; m 3Be health indicator, indoor/outdoor temperature-difference maintains in 8 ℃ of scopes, and indoor relative humidity maintains about 50%, and wind speed is about 1m/s; Described m 1, m 2, m 3Characterized by one group of fuzzy set that suitably defines, its membership function is: μ Mj(u) u ∈ U; J=1,2,3;
The fuzzy object space of air-conditioning system can be expressed as:
M = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) | u ∈ U , j = 1,2,3 } . . . ( 7 )
In the described control algolithm, several constraintss, 1 are arranged for summer air-conditioning) energy-conservation constraints: power failure dutycycle minimum is not less than 15%; 2) healthy constraints: indoor/outdoor temperature-difference is no more than 8 ℃, and ceiling temperature is 32 ℃.The relative humidity higher limit should not surpass 80%, and lower limit should not be lower than 30%; 3) between the scope 0 to 1 of comfort level constraints: PMV; With above-mentioned constraints mathematical formulae g j(u) be expressed as:
Energy-conservation constraints: g 1(u)=15-rate (%)≤0
Healthy constraints: g 2(u)=temperature Door-out-temperature Door-in-8≤0
g 3(u)=temperature door-in-32≤0
g 4(u)=humidity door-in-80≤0
Comfort level constraints: g 5(u)=PMV-1≤0
The input space of air-conditioner controller can be represented with formula (8):
U={μ|g k(u)≤0,k=1,2,3,u∈R 3}???(8)
By following formula (7), (8) and constraints, obtain the fuzzy multiple target satisfactory optimization model of air-conditioning control, represent with (9):
μ = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) s . t . g 1 ( u ) = 15 - rate ( % ) ≤ 0 g 2 ( u ) = temperature door - out - temperature door - in - 8 ≤ 0 g 3 ( u ) = temperature door - in - 32 ≤ 0 g 4 ( u ) = hrmidity door - in - 80 ≤ 0 g 5 ( u ) = PMV - 1 ≤ 0 . . . ( 9 )
Adopt the additivity weighting method optimization cost function of being satisfied with, computing formula is represented by formula (10)
μ c 0 ( u j ) = Σ i = 1 3 μ m i ( u j ) * w i . . . ( 10 )
W in the following formula 1Be the thermal comfort weight, w 2Be the energy saving weight, w 3Be the health weight,
The single step forecast model of air-conditioning control is:
In the formula: x (k) ∈ X is the state variable of system; Y (k) ∈ Y is system's output, mainly is power failure dutycycle, temperature control and fan motor rotational speed here; U (k) ∈ { u 1, u 2, u 3It is air-conditioner controller input; Mapping f:X * U → X; Mapping F:X → Y; о is the Compound Mappings operator;
M = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) } The time, output y (k+1) is represented by formula (12) the satisfaction of all targets:
μ m(y(k+1))=μ m( Fοf(x(k),u(k)))????????(12)
μ in the formula (12) m(y (k+1)) is that k controls the satisfaction of u (k) to all target M (comfortableness, energy saving, health) when the systematic procedure state is x (k) constantly;
Satisfied disaggregation C by the M derivation 0(k) ∈ U is the fuzzy set of control on the U of space, and its satisfaction to target M can represent with membership function formula (13),
Represent by formula (14) with the corresponding satisfaction of cost function that formula (12) is represented
The power supply dutycycle of the off-premises station of air-conditioning is represented by formula (14):
Described microprocessor comprises temperature control part branch, the additional control section of air-conditioning, and described temperature control part branch is a temperature control modules; The additional control section of described air-conditioning comprises indoor and outdoor surroundings data read module, hot comfort PMV computing module, supply stop circle setting module, cycle zero-time setting module, off-premises station power supply dutycycle computing module, power saving rate measurement module.On the basis of original temperature control modules, increased additional control section.
Described air-conditioning terminal is a plurality of, and described indoor and outdoor surroundings data read module reads indoor temperature transmitter, humidity sensor, the outdoor temperature data acquisition unit of each air-conditioning terminal, the data of indoor set wind speed collector; The output of described off-premises station power supply dutycycle computing module connects the power supply occupancy controller of each air-conditioning terminal.
Operation principle of the present invention is: measure comfortableness with PMV numerical value; Measure energy saving with actual power saving rate; Measure health with scope indexs such as indoor/outdoor temperature-difference, indoor relative humidity, wind speed, be mainly reflected in:
(1), aspect the sense of prediction human thermal comfort, utilized many achievements in research among the present invention and done some corrections according to the climatic condition of China, people such as this respect Gagge, Fanger have done many research work, foremost is to have proposed consensus forecast ballot (PMV) to come thermal environment is estimated, and has obtained the relation between human body thermic load and the PMV.Formula (16) is the comfortable equation of static heat of human body
M-W=Q Sk+ Q Res+ S=(C+R+E Sk)+(C Res+ E Res)+S formula (16)
In the formula, M: human body metabolism rate; W: the mechanical power that human body is finished; Q Sk: total heat dissipation capacity of breathing; Q Res: percutaneous total heat dissipation capacity; S: the accumulation of heat rate of human body; C: the radiation heat transfer of body surface and environment; R: the heat convection of body surface and environment; E Sk: percutaneous evaporative heat loss amount; C Res: breathe the heat loss through convection amount; E Res: the REHL amount.Unit: W/m 2
The PMV index is on the comfortable equation of setting up of static heat, utilizes statistical method that the hotness index is associated with defined human body thermic load and obtains, and can be used for the thermal comfort index that thermal environment is estimated.The comfortable equation of static heat is the basis of PMV index, and can be simplified through following two conditions by formula (16): 1) heat exchange between human body and environment reaches balance, and promptly the S item is zero in the formula 1; 2) the perspiration heat of evaporation of human surface temperature and human body reality loss (or volume of perspiration of human body) should remain in the small range, and all is the function of metabolic rate, is provided by formula (18).When process was felt thermal comfort to many experimenters under different activities, skin temperature that records and the loss of perspiration heat of evaporation were done linear regression and are provided by formula (18).
A<t Msk<b; C<E Rsw<d formula (17)
t Msk=35.7-0.0275 (M-W); E Rsw=0.42 (M-W-58.15) formula (18)
In the formula, t Msk: the human body skin mean temperature, unit is ℃; E Rsw: the loss of human body thermal conditioning perspiration heat of evaporation, unit is W/m 2
PMV is a thermal comfort index of predicting most of people's average response according to the hotness index.Fanger utilizes statistical means to obtain relation between human body thermic load and the PMV, is provided by formula (19).
PMV=[0.303exp (0.036M)+0.028] L formula (19)
Human body thermic load L (W/m2) is defined as the heat (M-W) that inside of human body produces in the formula, when remaining on the pairing comfort value of corresponding metabolic rate with supposition skin temperature and the loss of perspiration heat of evaporation (result of calculation of formula 3), human body is to the difference of environment institute dissipated heat.
Experimental result shows that above-mentioned PMV index is under common typical indoor weather conditions, and there are not very big difference in predict the outcome and the experimental result of PMV.Problem is: 1) when high humility, PMV can not predict human sense of comfort well; 2) PMV can not be used under high wind speed the prediction to the human thermal sensation.This index is that to be used for describing the static heat of human body comfortable, because the thermal comfort of human body has dynamic characteristic in the true environment, therefore is necessary according to actual application environment These parameters to be revised.For the lower climatic environment of the humidity (northern area of China, RH<5Q%), the model of utilization formula (18) is estimated, and for the higher climatic environment of the humidity (southern area of China, RH average 68%), then to revise the evaluation model of formula (18).
In summer, should in air-conditioning system, bring into play more importantly effect in addition according to above-mentioned model air-flow; Then answer strictness to be controlled in the winter time.Air-flow is a most cheap a kind of air conditioning mode, if improve indoor air temperature when improving air velocity, this not only helps the energy-conservation of system can also improve indoor air quality greatly.Many researchs and experimental result shown when temperature is higher, wind speed reach 1m/s when above human body still feel comfortably cool.In order to reduce cost and to simplify control algolithm, in this patent, adopted according to the rotating speed of setting indoor fan motor season, make problem obtain simplifying.Specific practice is, is no more than the rotating speed that improves blower fan under the noise prescribed limit situation as far as possible in summer at fan noise, can reach 1 generally speaking to 1.4m/s, then will limit the rotating speed of blower fan in the winter time below 0.5m/s.
Adopt in the present invention with PMV as controlled parameter after, the control of the thermal comfort of air-conditioning just becomes a Nonlinear Control Model.For the simplification problem, this patent is according to 3 in 4 the indoor environment parameters setting values of determining the another one parameter.Thermal comfort index is not direct controlled parameter in this control mode, but selects some environmental variances as the parameter that directly is controlled.The metabolic rate of other non-controlled ambient parameters and human body and clothing thermal resistance are just determined the setting value of each environmental variance in real time as the foundation of determining the controlled variable setting value according to the index of PMV.
Analyze in theory concerning 4 environmental variances, all there is the possibility as controlled parameter in each variable.But to select controlled parameter according to the characteristics of air-conditioning system and environment in actual applications.The air-conditioning thermal comfort control strategy that the present invention proposes is: keeping on original temperature control system basis, dynamically set the power failure dutycycle according to the temperature and the air humidity of indoor air velocity, mean radiant temperature, indoor and outdoor, as shown in Figure 2; This control strategy advantage is the control that can increase PMV on the basis of original air-conditioner control system, and original air-conditioner control system is mainly realized thermostatic control, and the control of PMV mainly realizes the monitoring and the regulating action of aspects such as economize on electricity property, comfortableness, health.In this control strategy, because original air-conditioner temperature control is little closed loop, and the control of PMV is in outer closed loop, therefore thermostatic control will be obeyed the control of PMV, this outer closed loop has complementary effect in conjunction with little closed-loop control, have system reliability height, good stability, realize easily also undergoing technological transformation to existing air-conditioning easily.
Above-mentioned air-conditioning thermal comfort control strategy is analyzed theoretically and is implemented relatively easily, just must measure each environmental variance on reality is used.But in fact the measurement of mean radiant temperature and wind speed is often relatively more difficult, and used sensor is also relatively more expensive.The method of some simplification of employing is avoided the direct measurement to wind speed, mean radiant temperature even humidity in this patent, mean radiant temperature is equaled air themperature, wind speed is corresponding with the rotating speed of blower fan, with meteorological data or local temperature, humidity year Changing Pattern and the diurnal variation rule substitute the temperature and humidity measurement of the external environment at that time of reality.
(2), aspect energy saving; the energy resource consumption more than 70% occurs in the air-conditioning system refrigeration host computer in the air-conditioning system at present; adopt interrupt techniques with the electricity consumption of air-conditioning system refrigeration host computer periodical breaks; such as refrigeration host computer is per hour added up to shut down to be controlled between 10 to 50 minutes; keeping under the indoor environment comfort level situation; blowing fan remains in operation, and reaches the purpose of saving the electricity consumption of air-conditioning cold air.
(3), consider from health perspectives, the temperature difference with indoor and outdoor in this patent is controlled in 8 ℃, adopted the method for adjusting indoor temperature according to outdoor temperature dynamic ground, be controlled under such temperature difference, no matter the people enters comfortable indoor from sweltering heat outdoor, still from comfortable indoor outdoor to sweltering heat, can both very fast adjustment adapt to, avoided because dizziness appears in the excessive people of causing of indoor/outdoor temperature-difference, easily degradation is uncomfortable under tired, general malaise and the immunologic function reacts; In this patent,, mainly be to keep indoor dehumidification function and keep indoor temperature in the operation of when the indoor and outdoor temperature difference surpasses 8 ℃, keeping off-premises station on the power failure mode with very large power failure rate (85%).
Beneficial effect of the present invention mainly shows: 1, air conditioning control device can calculate the comfort level value according to indoor air-flow, temperature, air humidity, and then the dutycycle of controlled off-premises station power supply, can make the user have good comfort level; 2, by the power supply of duty cycle adjustment off-premises station, has good energy-conservation; 3, adjust indoor temperature according to outdoor temperature dynamic ground, keep indoor dehumidification function and keep indoor temperature, avoided because dizziness appears in the excessive people of causing of indoor/outdoor temperature-difference, easily degradation is uncomfortable under tired, general malaise and the immunologic function reacts.
(4) description of drawings
Fig. 1 is that existing air-conditioning is the temperature control principle figure of application point with the room temperature.
Fig. 2 is that the thermal comfort with the people is the air-conditioning control principle figure of control strategy.
Fig. 3 be under three kinds of different relative humidity situations PMV or Disc with the variation of ambient temperature curve map.
Fig. 4 is the temperature Change curve map in some day in a certain Area during Summer.
Schematic diagram when Fig. 5 is PMV controller control air-conditioning pyrogenicity.
Schematic diagram when Fig. 6 is the refrigeration of PMV controller control air-conditioning.
The calculating schematic diagram of actual power saving rate when Fig. 7 is the control of power failure dutycycle.
Fig. 8 is the control curve map of pmv value and dutycycle.
Fig. 9 is the theory diagram of control device.
Figure 10 controls power failure dutycycle control schematic diagram with pmv value.
Figure 11 is the control block diagram of power failure dutycycle of the outdoor refrigeration host computer of some air-conditionings of a kind of computer centralized Control.
(5) specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, a kind of have comfortable, the air conditioning control device of energy-conservation and healthy functions, described control device comprises microprocessor 3, be used to detect indoor temperature, the indoor temperature of humidity, humidity sensor 1, the off-premises station start-up circuit, described microprocessor 3 comprises temperature control modules 34, described temperature control modules 34 comprises that temperature is provided with the unit, the temperature comparing unit, described indoor temperature transmitter, the output that temperature is provided with the unit connects the temperature comparing unit, the output of described temperature comparing unit connects the off-premises station start-up circuit, and described air conditioning control device also comprises the outdoor temperature data acquisition unit 5 that is used to detect outdoor temperature, be used to set the occupancy controller 20 of off-premises station power supply dutycycle and be used to store hot comfort PMV and temperature, the memory module of the corresponding sequence of humidity and hot comfort and the corresponding sequence of dutycycle; Described microprocessor 3 also comprises: indoor and outdoor surroundings data read module 6 is used to read the data of indoor temperature transmitter, humidity sensor, outdoor temperature data acquisition unit, indoor set wind speed collector; Hot comfort PMV computing module 10 is used for the wind speed according to indoor temperature value, humidity value, indoor set, and the wind speed of described indoor set is converted to equivalent temperature T a,, calculate hot comfort PMV according to the corresponding sequence of hot comfort with equivalent temperature, humidity; Supply stop circle setting module 12 is used to set the dutycycle power-up period of off-premises station; Cycle zero-time setting module 12 is used for setting at random the zero-time of the dutycycle power-up period of current off-premises station power supply; Off-premises station power supply dutycycle computing module 13 is used for the hot comfort that obtains according to above-mentioned, according to the corresponding sequence of hot comfort with dutycycle, calculates the off-premises station dutycycle of powering; The output of described off-premises station power supply dutycycle computing module 13 connects power supply occupancy controller 20.
Described comfort level PMV represents with following formula (1) with the corresponding sequence of dutycycle:
rate ( % ) = t off t on + t off * 100 = f 1 ( PMV ) where , T out - T in ≥ 8 , rate ( % ) = 85 . . . ( 1 )
Wherein, f 1Represented hot comfort and the functional relation of interrupting dutycycle output, pmv value is the pmv value that calculates by indoor temperature, humidity and wind conditions, surpasses 8 when spending when pmv value differs near 0 the time or at indoor/outdoor temperature-difference, and dutycycle is 85; t OnIt is "open" state perdurabgility in the supply stop circle; t OffIt is "off" state perdurabgility in the supply stop circle.
Described equivalent temperature T aComputational methods, its formula is (2), (3);
ΔT=6*(v-0.25)-(v-0.25) 2???????(2)
T a=T in-measure-ΔT?????????????(3)
Wherein, v is the wind speed of indoor set, and unit is a meter per second; Δ T be for can allow increment, T aBe equivalent temperature, T In-measureBe present indoor temperature value.
Described microprocessor 3 also comprises power saving rate measurement module 15, and the electric power thus supplied, the temperature control modules electric power thus supplied that are used for according to the off-premises station power supply calculate power saving rate, and its formula is (4), (5):
T two - off = Σ 1 n t TC - off when t off . . . ( 4 ) ;
Arate ( % ) = Σ 1 n t off - T two - off Σ 1 n t on + Σ 1 n t off * 100 . . . ( 5 ) ;
Wherein, ∑ t TC-offBe owing to "off" state summation perdurabgility that temperature control modules produced, t in the supply stop circle OffIt is the "off" state time of temperature control modules in the supply stop circle; ∑ t OffBe illustrated in the supply stop circle, temperature control modules control is "off" state perdurabgility down, ∑ t OnBe illustrated in the supply stop circle, temperature control modules control is "open" state perdurabgility down, T Two-offBe illustrated in the one-period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.
Described off-premises station power supply dutycycle computing module 13 calculates off-premises station power supply dutycycle by the interpolation look-up table.The circuit that described off-premises station start-up circuit moves with relay or SCR control off-premises station " ON/OFF ".Described microprocessor comprises temperature control part branch, the additional control section of air-conditioning, and described temperature control part branch is a temperature control modules; The additional control section of described air-conditioning comprises indoor and outdoor surroundings data read module, hot comfort PMV computing module, supply stop circle setting module, cycle zero-time setting module, off-premises station power supply dutycycle computing module, power saving rate measurement module.
The course of work of present embodiment is:
The first, the measurement of outdoor temperature
The calculating formula of dutycycle (1) and in control algolithm formula (6), need to obtain outdoor temperature value, the measurement of described outdoor temperature, 1) can increase an outdoor temperature data acquisition unit 5 that is installed in the outdoor place of sheltering from heat or light, described collector 5 is a temperature sensor, and the outdoor temperature sensor in Fig. 9 converts outdoor temperature to data by A/D converter 2 and sends to indoor and outdoor surroundings data read module 6.Can increase cost though this mode is fairly simple; 2) temperature sensor of utilization in outdoor unit, the outdoor temperature sensor 5 in Fig. 9 converts outdoor temperature to data by A/D converter 2 and sends to indoor and outdoor surroundings data read module 6.Because when start just, temperature sensor in the outdoor unit can be used as and detects outdoor temperature at that time, obtain starting shooting after at that time the outdoor temperature, utilize the daily temperature Changing Pattern of this area to infer that sometime outdoor temperature, the daily temperature Changing Pattern in area shown in Figure 4 are to be stored in the meteorological data memory module 7 according to the rule of temperature Change over the years of the locality mode with data then.For inferring and evaluation method, 8:20 enters office such as 1 morning of July, open air-conditioning, at this moment the temperature that detects in the air-conditioner outdoor unit group is 26 ℃, is 26 ℃ with regard to estimating outdoor temperature, As time goes on, outdoor temperature can change, Fig. 4 has represented certain area in summer one day temperature Change curve is 35 ℃ according to the outside air temperature in this history estimating at 2 o'clock in afternoon, infers and the computing of estimation is inferred in the module 9 in the outdoor environment humiture and carried out; 3) utilize temperature sensor indoor in the air-conditioning, indoor temperature during with the startup air-conditioning is as present outdoor temperature (condition is whether will detect the operation of air conditioner dwell time above 1 hour), Changing Pattern according to this city, the outdoor temperature of this every day in season goes to estimate outdoor temperature then, supposition and evaluation method and above-mentioned 2) identical; 4) utilize meteorological data, obtain at that time outdoor temperature according to the daily temperature Changing Pattern of this area then, this is a kind of not by the non-mode that directly obtains outdoor temperature of indoor and outdoor temperature sensor, and this mode is effective to the air-conditioning centralized Control in the office block.
The second, indoor equivalent temperature calculates
Factor with wind speed in this patent is converted to equivalent temperature, such as present room temperature is 30 ℃, relative humidity is 50% can get up till now by curved line relation that the pmv value of indoor environment is 1.05, this value has surpassed people's thermal comfort scope, if but to be indoor wind speed be 1 to 1.4m/s for this, actual pmv value is 0.9 to be in the thermal comfort scope described equivalent temperature T aComputational methods, its formula is (2), (3);
ΔT=6*(v-0.25)-(v-0.25) 2?????(2)
T a=T in-measure-ΔT????????????(3)
Wherein, v is the wind speed numerical value of indoor set, and unit is a meter per second, and Δ T be for can allow increment, T aBe equivalent temperature, T In-measureBe present indoor temperature value.
Can know from formula (2), (3), calculate equivalent temperature according to wind conditions then from the temperature value that measures.
Three, PMV data computing
Concerning summer air-conditioning, pmv value is considered to the thermal comfort scope in 0 to 1 scope, Fig. 3 is humiture and pmv value graph of relation, solid line partly is the relation of temperature and pmv value when not considering the humidity situation, article three, dotted line is in different humidity (20%, 50%, 80%) relation of temperature and pmv value under the situation, can see that from these three curves humidity is very big to people's thermal comfort influence, and when relative humidity is 50% left and right sides, even indoor temperature also is in the thermal comfort scope during near 30 ℃, come word from health perspectives simultaneously, when relative humidity is 50% left and right sides time-to-live of bacterium the shortest, therefore reducing indoor humidity concerning China's southern area all is very favorable to energy-conservation and health
Obtain pmv value by above-mentioned equivalent temperature and indoor humidity with the method for the interpolation of tabling look-up.
Four, the calculating of dutycycle
Above-mentioned pmv value has been arranged by pmv value shown in Figure 8 and the curved line relation of interrupting dutycycle, the interruption duty that the interpolation calculation of tabling look-up obtains exporting is " ON/OFF " of control relay Rx1 recently, satisfies heat comfort condition in the hope of reaching indoor environment.
Fig. 5 is the system principle of compositionality figure of air-conditioning at time electric control of pyrogenicity situation and power saving rate control survey device.In Fig. 5, the control of economizing on electricity of 24 pairs of electric heater units 23 of electricity-saving control device.And, measure actual power saving rate according to power saving rate measurement mechanism 25.Electric heater unit 23 is made of the thermostat 23b of heater 23a and this heater 23a serial connection, and power supply AC220v provides electric energy to the electric heater machine 23 that comprises thermostat 23b, by electricity-saving control device 24 it is controlled.In Fig. 5, the contact of electric heater machine 23 and the RX1 relay 24b that controlled by the PMV control module 24a of electricity-saving control device 24 is connected in series with another contact 24c of RX1 relay, so heater 23a and thermostat 23b couple together the formation current supply circuit by RX1 relay tip 24c.The contact 24c of RX1 relay is a normally closed contact, when economizing on electricity control, electricity-saving control device 24 all is not in normally off, remain when situation to electric heater unit 23 power supplies, heater 23a carries out " ON/OFF " control according to the action of thermostat 23b.Thermostat 23b when detect indoor temperature set temperature when following its contact close, surmount the time contact that sets temperature and disconnect.The economize on electricity control of described electricity-saving control device 24 is carried out compulsory periodic interruption of power supply mode to electric heater unit 23 and is realized.Here, electricity-saving control device 24 control of economizing on electricity is by occupancy controller 24a RX1 relay 24b to be carried out " ON/OFF " control, also will produce corresponding " ON/OFF " state like this on RX1 relay tip 24c.That is, when RX1 relay 24b was in "off" state, electric power was fed to electric heater unit 23 and also just is in the state of cutting off the electricity supply.When cutting off the electricity supply, heater 23a must be in the state that does not have power supply.
In the described electricity-saving control device 24 micro computer is housed,, RX1 relay 24b is carried out periodically " ON/OFF " control according to the interruption dutycycle that sets in advance.For example, one hour is divided into 4 " ON/OFF " cycles, if the time duration in each " ON/OFF " " pass " in the cycle is 3 minutes, that is to say by RX1 relay 24b and undertaken carrying out 3 minutes "off" states again after the "open" state in 12 minutes that the power saving rate of this control mode is 20% in theory.The computing formula of power saving rate is represented by formula (5);
rate ( % ) = t off t on + t off * 100 . . . ( 1 )
In the formula: t OnBe "open" state perdurabgility in the one-period; t OffBe "off" state perdurabgility in the one-period.
But the above-mentioned power saving rate that obtains only is to have considered to carry out the power savings that periodically " ON/OFF " control is produced by RX1 relay 24b.In fact, above-mentioned thermostat 23b can carry out " ON/OFF " action to reach the temperature in the control room to heater 23a too, among the present invention for the effect of the temperature control of thermostat action with the power failure work that dutycycle produced of interruption made a distinction, here sum up so-called power failure control and decide whether provide electric power to air conditioner refrigerating (heating) equipment by RX1 relay 24b " ON/OFF " action, the effect that so-called energising control is the temperature control system of original air-conditioning decides air conditioner refrigerating (heating) equipment whether to switch on.Here introduce the notion of temperature control action rate, a temperature control action sequence figure describes below Fig. 7, high level represents that heater 23a is in the energising situation, low level represents that the attemperating unit heater 23a that works is in the no power situation, and the computing formula of temperature control action rate is represented by formula (20);
TCrate ( % ) = Σ t TC - off Σ t TC - on + Σ t TC - off * 100 . . . ( 20 )
In the formula: ∑ t TC-offIt is "off" state summation perdurabgility in the time cycle; ∑ t TC-onIt is "open" state summation perdurabgility in the time cycle.
The factor that influences temperature control action rate mainly contains current ambient temperature, current indoor temperature, the temperature that temperature controller sets, the watt level of air-conditioning and some environmental factors that the interior space influences heat exchange.What the people can carry out direct intervention in these factors is the temperature that temperature controller sets, the just common temperature value of setting by remote controller or air-conditioning panel when using air-conditioning, the temperature value of this setting can reflect the thermally comfortable environment that the air-conditioning user is expected indirectly.
During for the air conditioner refrigerating situation, the method of the realization of considering and above-mentioned air-conditioning pyrogenicity situation are roughly the same, here economize on electricity to as if the refrigerating part of air-conditioning, air-conditioning refrigeration compressor when the refrigeration work state consumes the electric energy more than 70% in the whole air-conditioning approximately, has goodish energy-saving effect so the off-premises station (compressor) 27 of air-conditioning is carried out power failure economize on electricity control.Fig. 6 is the schematic diagram that air conditioner refrigerating is adopted power failure economize on electricity control.Air-conditioning is made of the indoor set 26 of air-conditioning and the off-premises station 27 of air-conditioning.The indoor set 26 of air-conditioning mainly is made of control module 26a, indoor fan 26b, temperature sensor 26c, Bx2 relay 26d and the Bx2 relay tip 26e etc. of air-conditioning, the control module 26a of air-conditioning carries out temperature control according to the detection of the temperature sensor 26c that is connected, and the air-conditioner outdoor unit 27 that Bx2 relay tip 26e is connected by Bx2 relay 26d carries out " ON/OFF " control.Use the off-premises station 27 of 28 pairs of air-conditionings of electricity-saving control device to carry out power failure economize on electricity control simultaneously.Come measurements and calculations power failure rate, temperature control action rate and actual power saving rate by power saving rate measurement mechanism 29, computational methods and above-mentioned formula (1), formula (15), formula (4) and formula (5) are just the same.Just change to some extent at hardware aspect, here the some parts in the above-mentioned pyrogenicity air-conditioning is replaced, electric heater unit 23 is replaced with air-conditioner outdoor unit 27, electricity-saving control device 24 replaces with electricity-saving control device 28, power saving rate measurement mechanism 25 replaces with power saving rate measurement mechanism 29, thermostat 23b replaces with Bx3 relay 26d and the Bx3 relay tip 26e that air-conditioner controller 26a is controlled, simultaneously with occupancy controller 24a, RX1 relay 24b, RX1 relay tip 24c, power saving rate measuring unit 25a, AX1 relay 25c, AX1 relay tip 25e, BX1 relay 25b, BX1 relay tip 25d occupancy controller 28a, RX2 relay 28b, RX2 relay tip 28c, power saving rate measuring unit 29a, AX2 relay 29c, AX2 relay tip 29e, BX2 relay 29b, BX2 relay tip 29d replaces, and its effect is identical during with effect and air-conditioning pyrogenicity situation.
For refrigeration air-conditioner, wind speed is an important indicator that influences people's thermal comfort, and air-flow also is the most cheap a kind of air-conditioning means simultaneously.If improve indoor air temperature when improving air velocity, this not only helps the energy-conservation of system can also improve indoor air quality greatly.Many researchs and experimental result shown when temperature is higher, wind speed reach 1m/s when above human body still feel comfortably cool.Because measuring wind needs air velocity transducer, this will cause the increase cost, because the rotating speed of blower fan is to become a kind of proportionate relationship with wind speed, in order to reduce cost and to simplify control algolithm, in this patent, adopted according to the rotating speed of setting indoor fan motor season, made problem obtain simplifying.In Fig. 9, dispose indoor set wind speed setting module 14, this module mainly is after obtaining information in season from system, if the judgment is Yes in summer, be no more than the rotating speed that improves blower fan under the noise prescribed limit situation as far as possible at fan noise, set wind speed generally speaking and can reach 1 to 1.4m/s, if the judgment is Yes in the winter time, rotating speed by this limit module blower fan is controlled at wind speed below the 0.5m/s, in other words, in case after obtaining information in season from system time, air-flow makes PMV control model obtain simplifying just as an invariant, PMV control is more simple.
Described electricity-saving control device 28 carries out supply stop circle control according to supply stop circle that sets in supply stop circle among Fig. 9 and the cycle zero-time setting module 12 and cycle zero-time, supply stop circle can be selected in 10 minutes to 20 minutes, having adopted 15 minutes in this patent is a supply stop circle, the supply stop circle action time started is adopted the random fashion decision, produces formula and is represented by formula (21);
Pstart=INT(RANDC()*15)??????(21)
The number that is produced according to formula (21) is the random integers between 0 to 14, the probability that occurs any numerical value between 0 to 14 from the angle of probability all is identical, if the words of 100,000 operation of air conditioner are arranged on certain electrical network, it is identical that the air-conditioning supply stop circle action time started about 6666 is so just arranged, that is to say in certain supply stop circle of 15 minutes, there is the air-conditioning about 6666 to enter supply stop circle at first, there is the air-conditioning about 6666 to enter supply stop circle after one minute again, effect as shown in figure 10, it is obvious especially when this effect is reflected in peak of power consumption, if to account for the load of whole electrical network be 40% to air conditioner load during peak of power consumption, the power failure dutycycle all is set to 15% words, as 15% of the mild peak of power consumption of this energy of air-conditioning, concerning whole electrical network, can play 6% of mild peak of power consumption value at least, be referred to as the peak clipping method that on average staggers in this patent.The peak clipping method that realizes on average staggering is relatively simple, when air-conditioning one energising, air-conditioner controller carries out the initialization supply stop circle and cycle zero-time setting module 12 is realized above-mentioned functions, this function can not produce any influence to the personal user, and be very favorable to whole power grid security, if estimate that present air-conditioning number is 100,000,000, adopt the newly-increased generated energy that just is equivalent to power station, newly-built Three Gorges after this technology.
With reference to Fig. 7, describe with a temperature control action sequence figure, high level represents that air-conditioner outdoor unit 27 is in the energising situation, low level represents that temperature conditioning unit 26a works makes air-conditioner outdoor unit 27 be in the no power situation, therefore can calculate temperature control action rate in 1 hour by this temperature control action sequence figure, had 6 temperature controls action in 1 hour, amounting to the time is the 3+1+2.5+2.5+1.5+1=11.5 branch, and its temperature control rate hourly is (11.5/60) * 100=19.The computing formula of temperature control action rate is represented by formula (20);
TCrate ( % ) = Σ t TC - off Σ t TC - on + Σ t TC - off * 100 . . . ( 20 )
In the formula: ∑ t TC-offIt is "off" state summation perdurabgility in the time cycle; ∑ t TC-onIt is "open" state summation perdurabgility in the time cycle.
When considering to have adopted the power failure duty-cycle to economize on electricity, the computational problem that an actual power saving rate is arranged, that is to say the actual conduction time that will consider when calculating actual power saving rate heater 23a, be the result who is acted on simultaneously by RX1 relay 24b and thermostat 23b this actual conduction time.Describe with Fig. 5, when the contact of thermostat 23b is in " pass " operating state, at this moment heater 23a also is in " pass " state, even cut off power supply forcibly to electric heater unit 23, this action of cutting off the electricity supply is produced by thermostat 23b action, thereby can not be called economize on electricity in this time of cutting off the electricity supply.Therefore to obtain actual power saving rate, also must deduct " pass " state time of thermostat 23b, just need to adopt the power saving rate measurement mechanism 25 among Fig. 9 in order accurately to measure actual power saving rate from " pass " state time of RX1 relay 24b.The AX1 relay 25b of the "on" position that detects heater 23a and the BX1 relay 25c that whether is in power supply state that detection comprises the electric heater unit 23 of thermostat 23b are arranged in power saving rate measurement mechanism 25.Power saving rate measuring unit 25a is set in power saving rate measurement mechanism 25 in addition, dispose micro computer in this unit, according to the operating state that the state-detection of AX1 relay tip 25e " ON/OFF " is monitored AX1 relay 25c, according to the operating state that the state-detection of BX1 relay tip 25d " ON/OFF " is monitored BX1 relay 25b, record and this these operating state constantly in the internal memory of micro computer.Here, above-mentioned supply of electric power Stateful Inspection means are to realize with the AX1 relay 25c of AX1 relay tip 25e with BX1 relay 25b, running state monitoring means with BX1 relay tip 25d.Fig. 5 has represented the control example of a state of 1 hour that the electric power thus supplied of electric heater unit 23 is write down with the time order in the internal memory of the micro computer of power saving rate measuring unit 25a.The operating state of AX1 relay 25c has been represented the "on" position of electric heater 23a, and the operating state of BX1 relay 25b has been represented the power supply state to electric heater unit 23.On this time sequencing figure, low level is represented the "off" state that relay is in; High level is represented the "open" state of relay.That is to say that the operating state of AX1 relay 25c is a "open" state to heater 23a during high level, is "off" state during low level.Simultaneously, the operating state of BX1 relay 25b, high level are to be supply of electric power states to electric heater device 23, and low level is represented the dump state.Therefore when the power saving rate of realistic border, to deduct the low level state time of AX1 relay 25c during this time period from the low level state time of BX1 relay 25b.For Fig. 5, such as operating state T1 was arranged in one hour at BX1 relay 25b, T2, four "off" states of T3 and T4, be 3 minutes the perdurabgility of each "off" state, that is to say that in one hour it is 12 minutes that BX1 relay 25b is in "off" state total time, but notice in Fig. 5, when the low level state of AX1 relay 25c does not appear in the operating state of BX1 relay 25b among T1 and the T2 in the time period of " pass ", the low level state that in T3 and T4, has occurred AX1 relay 25c respectively, this time of twice was respectively 2.5 minutes and 1 minute, when the power saving rate of realistic border, will deduct this two times so, promptly, 12-2.5-1=8.5 minute, actual power saving rate is (8.5/60) * 100=14%.Therefore calculating actual power saving rate can finish in two steps, at first calculate in a time period, under the situation that power supply is cut off temperature control cold time accumulated value that works, with formula (4) expression,
T two - off = Σ 1 n t TC - off when t off . . . ( 4 )
In the formula: T Two-offBe illustrated in the time period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.Had this cumulative time just can calculate actual power saving rate by through type (5):
Arate ( % ) = Σ 1 n t off - T two - off Σ 1 n t on + Σ 1 n t off * 100 . . . ( 5 )
In the formula: Arate (%) is illustrated in a time period Middle actual power saving rate, Be illustrated in the cumulative time that power supply is cut off in this time period.
There has been above-mentioned formula just can count with sky, the moon, year be the actual power saving rate of unit; Equally also can obtain with the sky is the actual power saving rate change curve of unit.In this patent, power failure dutycycle setting value is kept at respectively in two tables of data with temperature control action sequence data, these data are used for carrying out the statistics and the FEEDBACK CONTROL of actual power saving rate.With (ON/OFF) of state value (True/False) expression action, be example with movement state diagram shown in Figure 7 in table, can access the record of table 1, table 2, wherein table 1 is represented the sequential recording of dutycycle setting value, table 2 expression temperature control action sequence record.Listed the record in the 9:00 one hour in time since August in 2005 morning on the 1st in the table.
Table 1 power failure duty cycle sequence record data table
Date Time State
??… ??… ??…??
??2005-8-1 ??9:00:00 ??True
??2005-8-1 ??9:12:00 ??False
??2005-8-1 ??9:15:00 ??True
??2005-8-1 ??9:27:00 ??False
??2005-8-1 ??9:30:00 ??True
??2005-8-1 ??9:42:00 ??False
??2005-8-1 ??9:45:00 ??True
??2005-8-1 ??9:57:00 ??False
??… ??… ??…
Table 2 temperature control action sequence record data table
Date Time State
??… ??… ??…
??2005-8-1 ??9:00:00 ??True
??2005-8-1 ??9:06:00 ??False
??2005-8-1 ??9:09:00 ??True
??2005-8-1 ??9:17:30 ??False
??2005-8-1 ??9:18:30 ??True
??2005-8-1 ??9:30:30 ??False
??2005-8-1 ??9:33:00 ??True
??2005-8-1 ??9:41:30 ??False
??2005-8-1 ??9:45:00 ??True
??2005-8-1 ??9:51:30 ??False
??2005-8-1 ??9:53:00 ??True
??2005-8-1 ??9:59:00 ??False
??… ??… ??…
The actual conditions data of operation of air conditioner have been write down in these two tables, from these recorded data, through type (1), formula (20), formula (4) and formula (5) calculate the indexs such as power failure rate, temperature control action rate and actual power saving rate of section sometime.
The economize on electricity control action that described electricity-saving control device 28 is produced mainly is to send occupancy controller by the result of calculation in the air-conditioner controller computing module 13 among Fig. 9 to through I/O interface 16, described occupancy controller is realized by power amplification chip or electronic device, carries out periodically " ON/OFF " action through power amplification rear drive RX2 relay 28b or RX1 relay 24b; Below the cycle of power failure and the zero-time in cycle are illustrated, can know that from formula (20) to the computing formula of formula (23) fractional energy savings of air-conditioning is relevant with interruption dutycycle size, it is big more energy-conservation more to interrupt dutycycle in theory, that is to say that " pass " actuation time is long more energy-conservation more.But the thermal comfort that also must consider the user in energy-conservation is with healthy.
Embodiment 2
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, described off-premises station power supply dutycycle computing module calculates off-premises station power supply dutycycle by control algolithm.Set indoor machine fan motor speed and indoor temperature control desired value, regulate the dutycycle of the interruption in a period of time of air-conditioning power supply then by multiple target satisfactory optimization result, the algorithm of its control is represented by formula (6)
The quality of control mainly is that three index comprehensives such as thermal comfort, energy-conservation, health are estimated among the embodiment 2 as different from Example 1, adopts control object set M={m in this patent 1, m 2, m 3Represent the set of above-mentioned three indexs, wherein m 1Be the hot comfort index, use the PMV numeric representation, human body felt comfortably cool between its scope was controlled at 0 to 1 when summer, and it is high more to tend to 0 comfort level more, can utilize the PMV computational methods described in the embodiment 1 to obtain PMV numerical value; m 2Be actual power saving rate index, computational methods are provided by formula (5), and the big more expression power savings of the value of actual power saving rate is good more; m 3Be health indicator, indoor/outdoor temperature-difference maintains in 8 ℃ of scopes, and indoor relative humidity maintains about 50%, and wind speed is about 1m/s.So above-mentioned control series of targets m 1, m 2, m 3Can characterize by one group of fuzzy set that suitably defines.Its membership function is μ m j(u) u ∈ U; J=1,2,3
Therefore, the fuzzy object space of air-conditioning system can be expressed as
M = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) | u ∈ U , j = 1,2,3 } . . . ( 7 )
Put several constraintss of summer air-conditioning below in order, 1) energy-conservation constraints: power failure dutycycle minimum is not less than 15%; 2) healthy constraints: indoor/outdoor temperature-difference is no more than 8 ℃, and ceiling temperature is 32 ℃.The relative humidity higher limit should not surpass 80%, and lower limit should not be lower than 30%; 3) between the scope 0 to 1 of comfort level constraints: PMV.With above-mentioned constraints mathematical formulae g j(u) express,
Energy-conservation constraints: g 1(u)=15-rate (%)≤0
Healthy constraints: g 2(u)=temperature Door-out-temperature Door-in-8≤0
g 3(u)=temperature door-in-32≤0
g 4(u)=humidity door-in-80≤0
Comfort level constraints: g 5(u)=PMV-1≤0
The input space of air-conditioner controller can be represented with formula (8)
U={μ|g k(u)≤0,k=1,2,3,u∈R 3}????????(8)
Therefore, the fuzzy multiple target satisfactory optimization model of air-conditioning control can be represented by formula (9)
μ = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) s . t . g 1 ( u ) = 15 - rate ( % ) ≤ 0 g 2 ( u ) = temperature door - out - temperature door - in - 8 ≤ 0 g 3 ( u ) = temperature door - in - 32 ≤ 0 g 4 ( u ) = hrmidity door - in - 80 ≤ 0 g 5 ( u ) = PMV - 1 ≤ 0 . . . ( 9 )
The control input of air-conditioning is selected the satisfaction of its cost function according to output.Because object function is the fuzzy set of representing with degree of membership, so need determine the satisfactory optimization cost function with the Forecasting Methodology of Multi-Objective Fuzzy Decision.Here represent the importance of each target to control system with the mode of weight, establishing weight sets is W={w 1, w 2, w 3), w in the formula 1Be the thermal comfort weight, w 2Be the energy saving weight, w 3Be the health weight, w i∈ [0,1] and Σ i = 1 3 w i = 1 , The relative value of the important more pairing weight of target is big more.Adopt the additivity weighting method optimization cost function of being satisfied with in this patent, computing formula is represented by formula (10)
μ c 0 ( u j ) = Σ i = 1 3 μ m i ( u j ) * w i . . . ( 10 )
The single step forecast model that we establish the general type of air-conditioning system is
In the formula: x (k) ∈ X is that the state variable of system: y (k) ∈ Y is system's output, mainly is power failure dutycycle, temperature control and fan motor rotational speed here; U (k) ∈ { u 1, u 2, u 3) be air-conditioner controller input; Mapping f:X * U → X; Mapping F:X → Y; о is the Compound Mappings operator.The control target characterizes with the air-conditioning system fuzzy object space shown in the formula (7), and fuzzy multiobject satisfactory optimization model adopts the optimization model of the belt restraining shown in the formula (10) to characterize.
Here consideration is the Satisfactory Control to all targets, so M = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) } The time, output y (k+1) is represented by formula (12) the satisfaction of all targets
μ m(y(k+1))=μ m( Fοf(x(k),u(k)))????????(12)
μ in the formula (12) m(y (k+1)) is that k controls the satisfaction of u (k) to all target M (comfortableness, energy saving, health) when the systematic procedure state is x (k) constantly.Satisfied disaggregation C by the M derivation 0(k) ∈ U is the fuzzy set of control on the U of space, and its satisfaction to target M can represent with membership function formula (13),
Represent by formula (14) with the corresponding satisfaction of cost function that formula (12) is represented
At this moment the Satisfactory Control of air-conditioning is represented by formula (14)
On realizing, program can be described with following language rule above-mentioned algorithm
..................................
R j : if { u ( k ) is u j → y ^ ( k + 1 ) satisfy μ g ( k ) } then u ( k ) is u j , else
R j + 1 : if { u ( k ) is u j + 1 → y ^ ( k + 1 ) satify μ g ( k ) } thenu ( k ) is u j + 1 , else
..................................
In the formula: Rj is that its meaning is: if u (k)=u corresponding to the rule of j control jThe time, output Satisfy satisfactory optimization μ g(k), then getting uj is the k output of air-conditioner controller constantly.Therefore whether regular Rj is adopted and is depended on that can control uj cause the control of air-conditioning to make all targets obtain satisfied effect.But the temperature objectives setting value in the use of reality among the control uj is geostationary with the motor speed of fan, and with the input quantity of power failure dutycycle as control.
Embodiment 3
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, described air-conditioning terminal is a plurality of, and described indoor and outdoor surroundings data read module reads indoor temperature transmitter, humidity sensor, the outdoor temperature data acquisition unit of each air-conditioning terminal, the data of indoor set wind speed collector; The output of described off-premises station power supply dutycycle computing module connects the power supply occupancy controller of each air-conditioning terminal.
All the other structures are identical with embodiment 1 with the course of work.
The invention effect that the above embodiments 1,2,3 are produced is, according to statistics China every one hundred houses family in 2003 air-conditioning installation amount is 61.79, National urban family is about 1.2 hundred million, Urban House room air conditioner owning amount is 7,400 ten thousand, the air-conditioning electricity needs is about 7,500 ten thousand kilowatts, is about about 20% of national generating capacity in 2003.By every year the quiet 1,700 ten thousand cover air-conditionings that increase calculate, present Urban House room air conditioner owning amount will be above 100,000,000 in 2005 in China, if supposing the annual time of using of every air-conditioning is words about 500 hours, 1000 watts of power consumption of 100,000,000 cover average every covers of air-conditioning are guarded calculating so, this just will consume 500,*1*,100,0=1,000 hundred million degree with regard to family's air-conditioning, if actual fractional energy savings calculates with 15%, will save 15,000,000,000 degree.By every 1 degree electricity of present thermal power generation discharging carbon dioxide 0.8-2.5 kilogram, the price of carbon dioxide discharge-reduction quota per ton is about 4 dollars on international carbon element market, save kilowatt-hour, just be equivalent to save the water purification of 0.4 kilogram of standard coal and 4 liters, also can reduce the carbon dioxide of about 0.27 kilogram dust, 0.8-2.5 kilogram and 0.037 kilogram dischargings such as sulfur dioxide.
With regard to family's air conditioner energy saving this to country: save 500,*1*,100,0=1,000 hundred million degree; Save 0.4 kilogram of standard coal=6,000,000,000 kilogram standard coal of the 15000000000 electric * of degree; Save the water purification of water purification=60,000,000,000 liter of 15,000,000,000 4 liters of electric * of degree; Reduce the discharging of dust of dust=40.5 hundred million kilogram of 15,000,000,000 0.27 kilogram of electric * of degree; Reduce the emission of carbon-dioxide of ten thousand tons of the hundred million kilograms=1200-3750 of carbon dioxide=120-375 of the electric * 0.8-2.5 kilogram of 15,000,000,000 degree; Reduce the discharging of sulfur dioxide of carbon dioxide=5.55 hundred million kilogram of 15,000,000,000 0.037 kilogram of electric * of degree; Price by carbon dioxide discharge-reduction quota per ton on the international carbon element market is about 4 dollars of calculating, carbon dioxide discharge-reduction quota 1200-3750*4=4800-15000 ten thousand U.S. dollars; Calculate from playing 6% of mild whole electrical network peak value, can reduce country an investment that is similar to Three Gorges Projects.
With regard to family's air conditioner energy saving this to each family: on average each family can save 100 degree electricity every year, calculates by every degree electricity 0.68, and the annual electricity charge in saving are 68 yuan; Reduced because the expense of the treatment air conditioner disease of air-conditioning improper use extraneous expense.
No matter will more financial burden can be do not produced, and the technological transformation of energy-saving type air conditioner can be implemented more conveniently to the production of novel energy-conserving air-conditioning or to present a large amount of air-conditioning user; Can solve existing this cold, that this heat is or not drawback of air-conditioning.Because the application point of air-conditioning system will no longer be indoor air, but the service object people of air-conditioning system institute will improve the thermal comfort of air-conditioned room so greatly, promote the raising of people's operating efficiency; Can bring into play the energy-saving potential of air-conditioning system to a greater degree, with thermal comfort, energy-conservation, health indicator is goal of regulation and control, by selecting the best of breed of each ambient parameter, make the operation energy consumption minimum of air-conditioning system, make " air conditioner disease " away from people, can satisfy the requirement of thermal comfort, energy saving and the health of air-conditioning simultaneously.

Claims (10)

1, a kind of have comfortable, the air conditioning control device of energy-conservation and healthy functions, described control device comprises microprocessor, be used to detect the indoor temperature transmitter of indoor temperature, be used to detect the humidity sensor of indoor humidity, the off-premises station start-up circuit, described microprocessor comprises temperature control modules, described temperature control modules comprises that temperature is provided with the unit, the temperature comparing unit, described indoor temperature transmitter, the output that temperature is provided with the unit connects the temperature comparing unit, the output of described temperature comparing unit connects the off-premises station start-up circuit, and it is characterized in that: described air conditioning control device also comprises the outdoor temperature data acquisition unit that is used to detect outdoor temperature, be used to set the occupancy controller of off-premises station power supply dutycycle and be used to store hot comfort PMV and temperature, the memory module of the corresponding sequence of humidity and hot comfort and the corresponding sequence of dutycycle;
Described microprocessor also comprises:
The indoor and outdoor surroundings data read module is used to read the data of indoor temperature transmitter, humidity sensor, outdoor temperature data acquisition unit, indoor set wind speed collector;
Hot comfort PMV computing module is used for the wind speed according to indoor temperature value, humidity value, indoor set, and the wind speed of described indoor set is converted to equivalent temperature T a,, calculate hot comfort PMV according to the corresponding sequence of hot comfort with equivalent temperature, humidity;
The supply stop circle setting module is used to set the dutycycle power-up period of off-premises station;
Cycle zero-time setting module is used for setting at random the zero-time of the dutycycle power-up period of current off-premises station power supply;
Off-premises station power supply dutycycle computing module is used for the hot comfort that obtains according to above-mentioned, according to the corresponding sequence of hot comfort with dutycycle, calculates the off-premises station dutycycle of powering;
The output of described off-premises station power supply dutycycle computing module connects the power supply occupancy controller.
2, the air conditioning control device with comfortable, energy-conservation and healthy functions as claimed in claim 1 is characterized in that: described comfort level PMV represents with following formula (1) with the corresponding sequence of dutycycle:
rate ( % ) = t off t on + t off * 100 = f 1 ( PMV ) where T out - T in ≥ 8 rate ( % ) = 85 - - - ( 1 )
Wherein, f 1Represented hot comfort and the functional relation of interrupting dutycycle output, pmv value is the pmv value that calculates by indoor temperature, humidity and wind conditions, surpasses 8 when spending when pmv value differs near 0 the time or at indoor/outdoor temperature-difference, and dutycycle is 85; t OnIt is "open" state perdurabgility in the supply stop circle; t OffIt is "off" state perdurabgility in the supply stop circle.
3, as the described air conditioning control device of claim l, it is characterized in that: described equivalent temperature T with comfortable, energy-conservation and healthy functions aComputational methods, its formula is (2), (3);
ΔT=6*(v-0.25)-(v-0.25) 2???(2)
T a=T in-measure-ΔT????????(3)
Wherein, v is the wind speed numerical value of indoor set, and unit is a meter per second, and Δ T be for can allow increment, T aBe equivalent temperature, T In-measureBe present indoor temperature value.
4, the air conditioning control device with comfortable, energy-conservation and healthy functions as claimed in claim 2 is characterized in that: described equivalent temperature T aComputational methods, its formula is (2), (3);
ΔT=6*(v-0.25)-(v-0.25) 2???(2)
T a=T in-measure-ΔT????????(3)
Wherein, v is the wind speed of indoor set, and unit is a meter per second; Δ T be for can allow increment, T aBe equivalent temperature, T In-measureBe present indoor temperature value.
5, as the described air conditioning control device of one of claim 1-4 with comfortable, energy-conservation and healthy functions, it is characterized in that: described microprocessor also comprises the power saving rate measurement module, the electric power thus supplied, the temperature control modules electric power thus supplied that are used for according to the off-premises station power supply calculate power saving rate, and its formula is (4), (5):
T two - off = Σ 1 n t TC - off ( when t off ) - - - ( 4 ) ;
Arate ( % ) = Σ 1 n t off - T two - off Σ 1 n t on + Σ 1 n t off * 100 - - - ( 5 ) ;
Wherein, ∑ t TC-offBe owing to "off" state summation perdurabgility that temperature control modules produced, t in the supply stop circle OffIt is the "off" state time of temperature control modules in the supply stop circle; ∑ t OffBe illustrated in the supply stop circle, temperature control modules control is "off" state perdurabgility down, ∑ t OnBe illustrated in the supply stop circle, temperature control modules control is "open" state perdurabgility down, T Two-offBe illustrated in the one-period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.
6, as the described air conditioning control device with comfortable, energy-conservation and healthy functions of one of claim 1-4, it is characterized in that: described off-premises station power supply dutycycle computing module calculates off-premises station power supply dutycycle by the interpolation look-up table.
7, as the described air conditioning control device of one of claim 1-4, it is characterized in that: the circuit that described off-premises station start-up circuit moves with relay or SCR control off-premises station " ON/OFF " with comfortable, energy-conservation and healthy functions.
8, as the described air conditioning control device of one of claim 1-4 with comfortable, energy-conservation and healthy functions, it is characterized in that: described off-premises station power supply dutycycle computing module calculates off-premises station power supply dutycycle by control algolithm, and described control algolithm is represented by formula (6):
Wherein, M={m 1, m 2, m 3Represent the set of above-mentioned three indexs, wherein m 1Be the hot comfort index, use the PMV numeric representation, human body felt comfortably cool between its scope was controlled at 0 to 1 when summer, and it is high more to tend to 0 comfort level more; m 2Be actual power saving rate index; m 3Be health indicator, indoor/outdoor temperature-difference maintains in 8 ℃ of scopes, and indoor relative humidity maintains about 50%, and wind speed is about 1m/s; Described m 1, m 2, m 3Characterized by one group of fuzzy set that suitably defines, its membership function is: μ Mj(u) u ∈ U; J=1,2,3;
The fuzzy object space of air-conditioning system can be expressed as:
M = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) | u ∈ U , j = 1,2,3 } - - - ( 7 )
In the described control algolithm, several constraintss, 1 are arranged for summer air-conditioning) energy-conservation constraints: power failure dutycycle minimum is not less than 15%; 2) healthy constraints: indoor/outdoor temperature-difference is no more than 8 ℃, and ceiling temperature is 32 ℃.The relative humidity higher limit should not surpass 80%, and lower limit should not be lower than 30%; 3) between the scope 0 to 1 of comfort level constraints: PMV; With above-mentioned constraints mathematical formulae g j(u) be expressed as:
Energy-conservation constraints: g 1(u): 15-rate (%)≤0
Healthy constraints: g 2(u)=temperature Door-out-temperature Door-in-8≤0
g 3(u)=temperature door-in-32≤0
g 4(u)=humidity door-in-80≤0
Comfort level constraints: g 5(u)=PMV-1≤0
The input space of air-conditioner controller can be represented with formula (8):
u={μ|g k(u)≤0,k=1,2,3,u∈R 3)??(8)
By following formula (7), (8) and constraints, obtain the fuzzy multiple target satisfactory optimization model of air-conditioning control, represent with (9):
μ = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) }
s . t . g 1 ( u ) = 15 - rate ( % ) ≤ 0 g 2 ( u ) = temperature door - out - temperature door - in - 8 ≤ 0 g 3 ( u ) = temperature door - in - 32 ≤ 0 g 4 ( u ) = humidity door - in - 80 ≤ 0 g 5 ( u ) = PMV - 1 ≤ 0 - - - ( 9 )
Adopt the additivity weighting method optimization cost function of being satisfied with, computing formula is represented by formula (10)
μ c 0 ( u j ) = Σ i = 1 3 μ m i ( u j ) * w i - - - ( 10 )
W in the following formula tBe the thermal comfort weight, w 2Be the energy saving weight, w 3Be the health weight, w i∈ [0,1] and Σ i = 1 3 w i = 1 ;
The single step forecast model of air-conditioning control is:
In the formula: x (k) ∈ X is the state variable of system; Y (k) ∈ Y is system's output, mainly is power failure dutycycle, temperature control and fan motor rotational speed here; U (k) ∈ { u 1, u 2, u 3It is air-conditioner controller input; Mapping f:X * U → X; Mapping F:X → Y; о is the Compound Mappings operator;
M = { μ m 1 ( u ) , μ m 2 ( u ) , μ m 3 ( u ) } The time, output y (k+1) is represented by formula (12) the satisfaction of all targets:
μ m(y(k+1))=μ m( Fоf(x(k),u(k)))???????????????????(12)
μ in the formula (12) m(y (k+1)) is that k controls the satisfaction of u (k) to all target M (comfortableness, energy saving, health) when the systematic procedure state is x (k) constantly;
Satisfied disaggregation C by the M derivation 0(k) ∈ U is the fuzzy set of control on the U of space, and its satisfaction to target M can represent with membership function formula (13),
Represent by formula (14) with the corresponding satisfaction of cost function that formula (12) is represented
The power supply dutycycle of the off-premises station of air-conditioning is represented by formula (14):
9, the air conditioning control device with comfortable, energy-conservation and healthy functions as claimed in claim 5 is characterized in that: described microprocessor comprises temperature control part branch, the additional control section of air-conditioning, and described temperature control part branch is a temperature control modules; The additional control section of described air-conditioning comprises indoor and outdoor surroundings data read module, hot comfort PMV computing module, supply stop circle setting module, cycle zero-time setting module, off-premises station power supply dutycycle computing module, power saving rate measurement module.
10, the air conditioning control device with comfortable, energy-conservation and healthy functions as claimed in claim 5, it is characterized in that: described air-conditioning terminal is a plurality of, and described indoor and outdoor surroundings data read module reads indoor temperature transmitter, humidity sensor, the outdoor temperature data acquisition unit of each air-conditioning terminal, the data of indoor set wind speed collector; The output of described off-premises station power supply dutycycle computing module connects the power supply occupancy controller of each air-conditioning terminal.
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