CN101650574B - Livestock culture environment regulating device - Google Patents
Livestock culture environment regulating device Download PDFInfo
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- CN101650574B CN101650574B CN2009100179896A CN200910017989A CN101650574B CN 101650574 B CN101650574 B CN 101650574B CN 2009100179896 A CN2009100179896 A CN 2009100179896A CN 200910017989 A CN200910017989 A CN 200910017989A CN 101650574 B CN101650574 B CN 101650574B
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Abstract
The invention discloses a livestock culture environment regulating device, comprising a measurement and control unit which comprises an intelligent measurement and control terminal. The intelligent measurement and control terminal comprises a microprocessor, a detector connected with the microprocessor and a control output which is connected with a control device; the detector comprises a temperature and humidity detector and an ammonia concentration detector; the control device comprises an air blower; the livestock culture environment regulating device is characterized in that the detector also comprises dust concentration monitoring, illuminance detection and wind speed detection; the control device also comprises a lighting device, an atomization device, a heating device and a spraying device; when temperature reduction is required, the device performs temperature drop by adopting the mode of combining the air blower with atomization, namely, when the temperature is higher than the set value, temperature drop is carried out by adopting the mode of combining atomization with the air blower; and when the temperature is lower than the set temperature, temperature drop is carried out by adopting the air blower. The invention has the advantages of dropping temperature by combining the air blower with atomization, being capable of multifunctional detection and fuzzy control and the like.
Description
One, technical field
The present invention relates to a kind of regulation device, be specially a kind of multi-functional, atomizing of using fuzzy control method combines cooling with blower fan livestock culture environment regulating device.
Two, background technology
Influence the environmental factor that fowl dirty swine long hair educates and mainly comprise humiture, dust concentration, illuminance, ammonia concentration and ventilation condition; Therefore the control to these a little environmental factors plays an important role to growing of fowl poultry.
At present, small-sized domestic birds and animals all is artificial feeding, and environment is generally by the artificial sensing of poultry raiser, sensing weak effect and Monitoring and Controlling in real time.
Fowl animal house internal environment has multiple complicacy.Be in particular in that fowl animal house inside is a nonlinear system, climate inside is in the thermal equilibrium chaos state; Be a Large-lag System,, respond comparatively slow for the effect that the external world applied; Be a multivariate coupled system, and be closely connected between each variable, coupled to each other, to the control of the arbitrary variable of system, all can influence the variation of other state; Be a time-varying system, the environmental parameter amplitude alters a great deal in time.
The complicacy of fowl animal house internal environment makes can't carry out accurate modeling to it, thereby can not control with classical control theory, also can't handle with modern control theory.
Existing livestock culture environment regulating device generally all is to adopt blower fan to lower the temperature, and the blower fan cooling-down effect is not remarkable separately, weak effect when especially temperature variation is big.
Three, summary of the invention
The present invention is directed to above weak point, a kind of blower fan and livestock culture environment regulating device that atomizes and combine cooling, can realize multi-functional detection, fuzzy control of adopting is provided.
For achieving the above object, the technical solution used in the present invention is:
A kind of livestock culture environment regulating device comprises measurement and control unit, and described measurement and control unit comprises the intelligent monitoring terminal, the intelligent monitoring terminal includes microprocessor, be connected with clock chip, storer, detecting device and control output with microprocessor, be connected with opertaing device in the control output
Described detecting device comprises humiture detecting device, ammonia concentration detecting device, and described opertaing device comprises blower fan;
Regulation device adopts the fuzzy controller fuzzy control, described fuzzy controller is realized by described intelligent monitoring terminal, frequency converter and blower fan, detecting device connects the input end of described intelligent monitoring terminal microprocessor by the A/D change-over circuit, output end of microprocessor connects frequency converter through D/A converter, frequency converter connects outlet terminal---blower fan
Described detecting device also includes dust concentration detecting device, illuminance detecting device and wind speed detecting device; Described opertaing device also includes lighting device, atomising device, heating arrangement, chemical spraying device; During cooling, device adopts blower fan to lower the temperature with the mode that atomizing combines
The fuzzy control of single argument two dimension is adopted in this fuzzy control, and input information comprises the deviate e to fixed temperature and actual temperature, temperature deviation rate of change Δ e, output information is rotation speed of fan u, the input variable e of fuzzy control, the basic domain of Δ e and u is respectively [Xe ,+Xe], [X ' e, + X ' e] and [Yu ,+Yu], each self-corresponding fuzzy subset's domain is respectively [n,-n+1 ..., 0,, n-1, n], [m ,-m+1 ... 0 ..., m-1, m] and [k ,-k+1 ... 0 ..., k-1, k], by multiply by the obfuscation conversion of corresponding quantitative factor realization input separately and output variable respectively;
Temperature deviation and temperature deviation rate of change are fuzzy to turn to 13 grades, that is:
The domain E={-6 of temperature deviation ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6}
The domain Δ E={-6 of temperature deviation rate of change ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6}
The output controlled quentity controlled variable is fuzzy to turn to 7 grades, that is:
The domain U={0 of output controlled quentity controlled variable, 1,2,3,4,5,6}
Following control specification table is adopted in this fuzzy control:
Above-mentioned livestock culture environment regulating device, atomising device, heating arrangement, chemical spraying device are driven by relay, and relay connects microprocessor through photoelectricity isolation, amplifying circuit;
Lighting device is by the control of Control of Voltage solid-state voltage regulator, and it connects microprocessor through D/A conversion, photoelectricity isolation, amplifying circuit.
Above-mentioned livestock culture environment regulating device, described intelligent monitoring terminal are provided with wireless transmitter module RF and expansion mouth, and the intelligent monitoring terminal is connected with the host computer network by wireless transmitter module RF or expansion mouth.
Above-mentioned livestock culture environment regulating device, also be connected with keyboard display module and state load module with microprocessor, described state load module and display module are located on the electric cabinet, and described keyboard display module by terminal and state load module are realized the start stop operation of control device and parameter input, operational mode selection function.
Beneficial effect of the present invention shows:
Characteristics according to livestock culture environment, adopted blower fan to lower the temperature in the device control with the mode that atomizing combines, when being lower than setting value, temperature and rate of change get final product by the blower fan cooling, the mode that combines with blower fan of taking to atomize when being higher than setting value is lowered the temperature, cooling-down effect is remarkable, consumed energy is low simultaneously, meets economy principle.
Measurement and control unit is made up of intelligent monitoring terminal and multiple peripheral hardware, mainly finishes the detection task of information such as humiture, ammonia and gas particle concentration, wind direction, intensity of illumination, and carries out auto-control by preset mode.
FUZZY ALGORITHMS FOR CONTROL has been adopted in the adjustment of rotation speed of fan.Fuzzy control is essentially different with traditional control, and it needs also need use the state equation of matrix representation with the described transport function of precise figures unlike modern control theory unlike classics control.It is by the fuzzy thinking method of simulation human brain, control strategy (comprising knowledge, experience and intuition) by the induction operation personnel forms Automatic Control Strategy, and utilization linguistic variable and Fuzzy Set Theory formation control algolithm, with language conditional statement, go to carry out control at last as control law with ambiguity.
The intelligent monitoring terminal adopts the extensibility of modular construction, device strong, uses flexibly, by the property height; Can detect environmental factors such as humiture, dust concentration, illuminance, ammonia concentration and wind speed automatically, detection information can send to host computer by wireless or limited pattern.
Host computer is responsible for reception, storage, analysis and the processing of information, also can carry out Long-distance Control to the site intelligent detection and control terminal.Can pass through intelligent monitoring terminal keyboard parameter preset and mode of operation, also can finish by the host computer straighforward operation.Blower fan is the visual plant of regulation and control humiture and particle concentration etc., drives by frequency converter, is convenient to realize by the rotating speed adjustment intelligent control of these parameters.
The operation of device can be accepted host computer and instruct, and also can move automatically under terminal control, and the operation of device divides manually and automatic two kinds of operator schemes, and manual operation can directly be controlled external unit by keyboard; Can control opertaing device according to setup parameter under the automatic mode moves automatically.
Four, description of drawings
Fig. 1 is the structural representation of this device;
Fig. 2 is an intelligent monitoring terminal structure synoptic diagram of the present invention;
Fig. 3 is fuzzy control principle and procedure chart
Fig. 4 is an invention terminal physical circuit connection diagram;
Fig. 5 is the A part enlarged drawing of Fig. 4;
Fig. 6 is the B part enlarged drawing of Fig. 4;
Fig. 7 is the C part enlarged drawing of Fig. 4;
Fig. 8 is the D part enlarged drawing of Fig. 4;
Fig. 9 is the E part enlarged drawing of Fig. 4;
Figure 10 is the F part enlarged drawing of Fig. 4;
Figure 11 is this device electric cabinet structural representation.
Five, embodiment
The following correlation technique content of not addressing all can adopt or use for reference prior art.
A kind of livestock culture environment regulating device, comprise host computer and field measure-control unit, host computer is responsible for reception, storage, analysis and the processing of information, and host computer utilizes wireless transmitter module RF or expansion interface to carry out long-range or line traffic control is arranged field measure-control unit.
Described field measure-control unit comprises compositions such as intelligent monitoring terminal 11, electric cabinet 12, atomising device 13, lighting device 14, heating arrangement 15, ventilation chemical spraying device 16 and detecting device 17 as shown in Figure 1.
Described detecting device 17 mainly comprises humiture detecting device, dust concentration detecting device, ammonia concentration detecting device, illuminance detecting device, wind speed detecting device.
Described opertaing device mainly comprises atomising device 13, lighting device 14, heating arrangement 15, ventilation chemical spraying device 16.
The electric cabinet structure which is provided with as shown in figure 11 with knob down: atomizing starts, atomizing stops; Secondary-atomizing starts, secondary-atomizing stops; Ventilation starts, ventilation stops; Sterilization starts, sterilization stops; Light is opened, light is closed; Automatically operation, operation stop; System reset, parameter setting and "+" "-".
Keyboard shows that 114 can show humiture, dust concentration, illuminance, ammonia concentration and time information; Mainly realize the conversion of manual operation and automatic control state by keyboard, the ultimate value of the greenhouse degree when controlling automatically, dust concentration, ammonia concentration etc. and light open and close the time, and device is undertaken controlling automatically or manually by the FUZZY ALGORITHMS FOR CONTROL analog manual operation according to setting value.
Described microprocessor 111 is selected MSP430F149 for use, and MSP430F149 is that its outstanding feature is powerful processing power and super low-power consumption by the microprocessor of 16 bit of TI company of Texas Instruments exploitation, is very suitable for performance requirement height, occasion low in energy consumption; Storer 113 is selected the AT24C08 model for use.
Described environmental detector comprises following type detector:
1, humiture detecting device, it selects the SHT71 detecting device for use, this detecting device is based on the novel humiture detecting device of CMOSENS technology, this detecting device integrates temperature, Humidity Detection, signal condition, digital conversion, serial digital communication port and digital calibration east function, has the peripheral cell of exempting from, characteristics such as measuring accuracy height, reliability height, long-term stability.
2, dust concentration detecting device selects for use PPD20V to measure.
3, illuminance detecting device selects for use the light sensor silicon photocell to realize, wakes up with a start the light intensity sampling by light sensor, then output signal is adjusted, and adjusts the back and is exporting conversion.Adopt the TSL230B detectors measure light intensity of TI company.
4, the wind speed detecting device is selected TSI8455 for use, and this detecting device adopts hot blast power determination techniques to come measuring wind.Output signal is respectively 0-5V, 0-10V, and 0-20mA etc. can conveniently set according to the time needs.The output simulating signal is carried out the A/D conversion, promptly be convertible into corresponding wind speed.
5, ammonia concentration detecting device selects for use the TGS826 semiconductor detector to measure ammonia concentration.This detecting device adopts ceramic bases, and ammonia is had very high sensitivity, and response speed is fast, and measurement range is 5-100PPM, and output signal is a variable resistance, again through the A/D conversion, is converted into the ammonia concentration value at last after adjusting.
Wireless transmitter module RF adopts general RF-wise in the wireless telecommunications, and adopts the LSD-RFC1100A wireless data transmission module of Lierda company.
The quantity of field measure-control unit can determine to install quantity and installation site according to on-the-spot needs, and a plurality of measurement and control units are by wireless transmitter module RF module construction radio fest and control network.
Specify the components and parts connected mode that the intelligent monitoring terminal is controlled in the observing and controlling of this fowl poultry environment below in conjunction with accompanying drawing 4, Fig. 5-10 is its enlarged drawing.
As Fig. 4, shown in Figure 10: the interface 2,3,19 of microprocessor MSP430F149 connects the interface 7,6,1 of a storer AT24C08; The interface 50,51 of microprocessor MSP430F149 connects the interface 6,5 of another storer AT24C08.
The connection of detecting device:
SHT71 humiture detecting device is connected on the P2.4 and P2.5 pin of MSP430F149;
Illumination detecting device TSL230B frequency output signal connects by the P2.6 pin of MSP430F149;
Dust monitor PPD20V, wind speed detecting device TSI8455 and ammonia concentration detecting device TGS826 (earlier signal is nursed one's health) are connected on by the RM4018 capture card on the expansion RS485 communication interface of MSP430F149 on the J8-1-1 in succession.
The amount of opening the light control signals such as atomizing start and stop, heating start and stop, dispenser start and stop connect by the J11 port, and signal amplification circuit connects by J11, and amplifying signal drives midget relay, drives auxiliary reclay or Contactor Starting external loading by relay.
Light control is mainly used in the place that chicken farm etc. needs light filling, and incandescent lamp is by Control of Voltage solid-state voltage regulator control (HS260IK), and required analog control signal is also provided after the D/A conversion by the digital signal that the J11 port provides.
Terminal can be carried out communication by wireless mode and host computer, also can directly be connected with host computer by RS232 interface J8.
The extensive interface of device is:
The interface 2,3,4 of interface 4,5, the 6 connecting interface converter J4 of microprocessor MSP430F149; Interface convertor J4 interface 5 connects the interface 58 of microprocessor MSP430F149.
The P1 of microprocessor MSP430F149, P2 interface connecting interface converter J6, J7, J8.
Blower fan is the visual plant of environment conditioning in this device, adopts frequency converter to drive, and frequency converter analog quantity control signal provides by port J10, and J10 port output digital quantity signal carries out the D/A conversion and amplify the back obtaining through after the photoelectric coupler isolation again.
The intelligent monitoring terminal is by the D/A interface and use the intelligent control of FUZZY ALGORITHMS FOR CONTROL realization to rotation speed of fan, and schematic diagram and procedure chart are as shown in Figure 3.The intelligent monitoring terminal realizes fuzzy control to rotation speed of fan by following three links:
(1) input/output variable determines and obfuscation
According to fowl poultry environment observing and controlling characteristics, this device adopts the single argument two-dimensional fuzzy controller.Input information comprises temperature deviation value e, temperature deviation rate of change Δ e, and output information is the rotating speed u of blower fan.
If input variable e, the Δ e of fuzzy control and the basic domain of u are respectively [x
e,+x
e], [x '
e,+x '
e] and [y
u,+y
u], each self-corresponding fuzzy subset's domain be respectively [n ,-n+ 1 ..., 0 ..., n-1, n], [m ,-m+ 1 ..., 0 ..., m-1, m] and [k,-k+ 1 ..., 0 ..., k-1,1], the corresponding quantitative factor separately can realize importing and the obfuscation conversion of output variable by multiply by respectively.
Temperature deviation e is the deviate to fixed temperature and actual temperature, turns to 13 grades at this with temperature deviation and temperature deviation rate of change are fuzzy, that is:
The domain E={-6 of temperature deviation ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6}
The domain Δ E={-6 of temperature deviation rate of change ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6}
The output controlled quentity controlled variable is fuzzy to turn to 7 grades, that is:
The domain U={0 of output controlled quentity controlled variable, 1,2,3,4,5,6}
Following table 1 is the control specification table:
(2) calculate fuzzy control quantity according to input fuzzy quantity and fuzzy control rule
Fuzzy control rule is people's operating experience and the summary that the expert controls knowledge, is summarized as fuzzy control rule table usually.The principle of determining fuzzy control rule is that the static and dynamic performance of device output response reaches best.Basic thought is: when error was big for bearing, negative if error is changed to, this time error had increase tendency, became big for eliminating existing negative mistake as early as possible and suppressing error, and the variation of controlled quentity controlled variable is got honest; When error is changed to timing for negative error, the trend of the existing minimizing of device error itself for eliminating error and not overshoot as early as possible, should be got less controlled quentity controlled variable.When big or big, controlled quentity controlled variable is to eliminate error as early as possible when error; When error hour, the controlled quentity controlled variable of selection should be noted preventing overshoot, be the major control target with stability.According to this principle, it is as shown in table 1 to get fuzzy polling list.
By table 1 as seen, this fuzzy control table can be regarded the fuzzy array of a two dimension as and is stored in the storer.Can find pairing Ui easily according to the Ei and the Δ Ei of sampling instant according to this table.
Regarding fuzzy control table the file layout of two-dimensional array in ROM as is:
FUZZY-DATAS：
DB?06H，06H，06H，06H，06H，06H，06H，04H，04H，
02H，00H，00H，00H，00H
DB?06H，06H，06H，06H，06H，06H，06H，04H，04H，
02H，00H，00H，00H
DB?00H，00H，00H，12H，14H，14H，16H，16H，16H，
16H，16H，16H，16H
DB?00H，00H，00H，12H，14H，14H，16H，16H，16H，
16H，16H，16H，16H
(3), be converted into the working control amount the fuzzy control quantity de-fuzzy.
Through behind the above-mentioned fuzzy reasoning, the output of fuzzy controller is the discrete value of a fuzzy domain, need be multiplied by scale factor K
UOutput-scale-factor K
UAs total gain of fuzzy controller, the output of its affects controller also affects the characteristic of fuzzy control device.K
USelect too small meeting to make the device dynamic response elongated, cross conference and cause device vibration aggravation, need to adjust K
UBe appropriate value.K
UCan test definite through the scene repeatedly.
Device has two kinds of mode of operations, and the one, artificial directly steer mode, another is the automatic measuring and controlling pattern.
Under the artificial direct control pattern, but the direct control keyboard is realized the direct control to adjusting device.Device acquiescence mode is the manual operation mode of operation, manually pressing atomizing starts, device shows that atomizing starts, the intelligent monitoring terminal is sent out the atomizing startup command, and terminal makes the midget relay action after isolating, amplify by photoelectricity, by the adhesive of midget relay control contactor, control atomizing electric motor starting by atomizing driven by motor pump startup, is realized the atomizing cooling; Press the atomizing stop button, then stop atomizing.Secondary-atomizing is on the basis of atomizing for the first time, makes the further refinement of droplet by near blower fan or the fan that starts the atomizer.The start and stop operation stops similar with the atomizing startup.Ventilation starts, stop device is mainly used in and transfers indoor gas content and the humidity adjustment of empty livestock culture.Manually pressing ventilation starts, microcontroller is sent out the ventilation startup command, through isolation, method, makes the midget relay adhesive, drive contactor again and make blower fan get electric startup, can adjust dust concentration, gas concentration lwevel, ammonia concentration and humidity adjustment in the livestock culture environment; Stop by ventilation, then blower fan stops.Start by sterilization, then start the sterilization motor, realize the thimerosal of breeding environment is sprayed by sterilization motor-driven pump; Then stop sterilization by the sterilization stop key.Manual operation light open key, the incandescent lamp of then opening in the livestock culture environment carries out the room brilliancy adjustment, and incandescent lamp becomes little bright by working, and brightens gradually again, and process is bright entirely after about 1.5 minutes; When pressing the light close key, light is by the deepening gradually of complete bright state, thoroughly closes through light after 1.5 minutes approximately.
Under the automatic measuring and controlling pattern, set relevant parameter according to factors such as season, fowl poultry kind, fowl poultry puberties earlier, as light unlatching, shut-in time, humiture upper lower limit value, ammonia, gas particle concentration value.When parameter is set, by parameter key is set earlier, device prompting input password when the input password is correct, can be imported light open and close time, temperature upper lower limit value, humidity upper lower limit value, ammonia concentration upper lower limit value and dust concentration particle upper lower limit value in turn.After setting up certain parameter, key is set and forwards next parameter setting to, can realize the increase and decrease of parameter setting values by "+" or "-" by parameter.When parameter withdraws from parameter by the parameter setting after setting completed again the interface is set, by moving key automatically, promptly by parameter being set according to the FUZZY ALGORITHMS FOR CONTROL of setting, the analog manual operation realizes the auto-control of livestock culture environment to device then.When setting the light open and close time then, light starts automatically and closes, and when temperature surpasses higher limit, opens atomizing and fan and lowers the temperature, and stops atomizing and fan gradually according to set algorithm when temperature drops to lower limit gradually.When ammonia concentration and dust concentration reach higher limit, open exhaust fan automatically and automatically adjust.
When winter temperature was low, secondary-atomizing starts, stops control can connecing heating arrangement, to realize the temperature control that adds of fowl poultry environment in winter.
Claims (4)
1. a livestock culture environment regulating device comprises measurement and control unit, and described measurement and control unit comprises the intelligent monitoring terminal, the intelligent monitoring terminal includes microprocessor, be connected with clock chip, storer, detecting device and control output with microprocessor, be connected with opertaing device in the control output
Described detecting device comprises humiture detecting device, ammonia concentration detecting device, and described opertaing device comprises blower fan;
Regulation device adopts the fuzzy controller fuzzy control, described fuzzy controller is realized by described intelligent monitoring terminal, frequency converter and blower fan, detecting device connects the input end of described intelligent monitoring terminal microprocessor by the A/D change-over circuit, output end of microprocessor connects frequency converter through D/A converter, frequency converter connects outlet terminal---blower fan
It is characterized in that: described detecting device also includes dust concentration detecting device, illuminance detecting device and wind speed detecting device; Described opertaing device also includes lighting device, atomising device, heating arrangement, chemical spraying device;
During cooling, device adopts blower fan to lower the temperature with the mode that atomizing combines
The fuzzy control of single argument two dimension is adopted in this fuzzy control, and input information comprises the deviate e to fixed temperature and actual temperature, temperature deviation rate of change Δ e, output information is rotation speed of fan u, the input variable e of fuzzy control, the basic domain of Δ e and u is respectively [Xe ,+Xe], [X ' e, + X ' e] and [Yu ,+Yu], each self-corresponding fuzzy subset's domain is respectively [n,-n+1 ..., 0,, n-1, n], [m ,-m+1 ... 0 ..., m-1, m] and [k ,-k+1 ... 0 ..., k-1, k], by multiply by the obfuscation conversion of corresponding quantitative factor realization input separately and output variable respectively;
Temperature deviation and temperature deviation rate of change are fuzzy to turn to 13 grades, that is:
The domain E={-6 of temperature deviation ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6}
The domain Δ E={-6 of temperature deviation rate of change ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6}
The output controlled quentity controlled variable is fuzzy to turn to 7 grades, that is:
The domain U={0 of output controlled quentity controlled variable, 1,2,3,4,5,6}
Following control specification table is adopted in this fuzzy control:
2. livestock culture environment regulating device according to claim 1 is characterized in that: atomising device, heating arrangement, chemical spraying device are driven by relay, and relay connects microprocessor through photoelectricity isolation, amplifying circuit;
Lighting device is by the control of Control of Voltage solid-state voltage regulator, and it connects microprocessor through D/A conversion, photoelectricity isolation, amplifying circuit.
3. livestock culture environment regulating device according to claim 1 is characterized in that: described intelligent monitoring terminal is provided with wireless transmitter module RF and expansion mouth, and the intelligent monitoring terminal is connected with the host computer network by wireless transmitter module RF or expansion mouth.
4. livestock culture environment regulating device according to claim 1, it is characterized in that: also be connected with keyboard display module and state load module with microprocessor, described state load module and display module are located on the electric cabinet, and described keyboard display module by terminal and state load module are realized the start stop operation of control device and parameter input, operational mode selection function.
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| DE4127179A1 (en) * | 1991-08-16 | 1993-02-18 | Gaebken Elektroinstallation Gm | Climatic control method for animal shed to regulate temp. humidity and air quality - using microprocessor connected to humidity and temp. sensors to regulate heating and air flow |
| CN2625942Y (en) * | 2003-06-26 | 2004-07-14 | 何寒 | Multifunctional management control device for habitat of animals and plants |
| CN1559175A (en) * | 2004-02-24 | 2005-01-05 | 深圳市宝安区农业科学技术推广中心 | Remote radio information feedback and controlable environment intelligent system for agricultural crops |
| CN1946286A (en) * | 2004-03-01 | 2007-04-11 | 模拟帝私人有限公司 | Method and apparatus for environmental control |
| CN201278735Y (en) * | 2008-10-15 | 2009-07-29 | 北京京鹏环宇畜牧科技有限公司 | Head-swaging type blower fan and sprinkling cooling system for livestock house |
-
2009
- 2009-08-27 CN CN2009100179896A patent/CN101650574B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801008A (en) * | 1972-12-11 | 1974-04-02 | C Wenger | Climatic control especially for animal buildings |
| DE4127179A1 (en) * | 1991-08-16 | 1993-02-18 | Gaebken Elektroinstallation Gm | Climatic control method for animal shed to regulate temp. humidity and air quality - using microprocessor connected to humidity and temp. sensors to regulate heating and air flow |
| CN2625942Y (en) * | 2003-06-26 | 2004-07-14 | 何寒 | Multifunctional management control device for habitat of animals and plants |
| CN1559175A (en) * | 2004-02-24 | 2005-01-05 | 深圳市宝安区农业科学技术推广中心 | Remote radio information feedback and controlable environment intelligent system for agricultural crops |
| CN1946286A (en) * | 2004-03-01 | 2007-04-11 | 模拟帝私人有限公司 | Method and apparatus for environmental control |
| CN201278735Y (en) * | 2008-10-15 | 2009-07-29 | 北京京鹏环宇畜牧科技有限公司 | Head-swaging type blower fan and sprinkling cooling system for livestock house |
Non-Patent Citations (1)
| Title |
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| 林龙森等.奶牛热应激与牛舍环境调控系统.《福建农机》.2005,(第3期),第5-7,10页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101650574A (en) | 2010-02-17 |
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