CN2336254Y - Fuzzy logic inference temp. controller for air conditioner - Google Patents
Fuzzy logic inference temp. controller for air conditioner Download PDFInfo
- Publication number
- CN2336254Y CN2336254Y CN 98204515 CN98204515U CN2336254Y CN 2336254 Y CN2336254 Y CN 2336254Y CN 98204515 CN98204515 CN 98204515 CN 98204515 U CN98204515 U CN 98204515U CN 2336254 Y CN2336254 Y CN 2336254Y
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- CN
- China
- Prior art keywords
- temperature
- circuit
- controller
- blower fan
- fuzzy logic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a temperature controller of fuzzy logic inference for air conditioners, which is mainly composed of a power supply, a temperature setting circuit, a temperature sensor, a fuzzy inference machine, a blower, and an electromagnetic valve controller. The temperature controller of fuzzy logic inference for air conditioners is characterized in that the fuzzy inference machine is composed of an operational amplifier of a response function, a threshold circuit, and a three-eight decoder. The control precision of the temperature controller can reach 25 DEG plus or minus 0.4 DEG. The energy is saved by 20 percent. A temperature difference of a main wind passage and a non-main wind passage can be reduced to 1 DEG. The cost is low and the anti-interference ability is stronger. The temperature controller of fuzzy logic inference for air conditioners is particularly suitable for the end control of central air conditioners.
Description
The utility model relates to a kind of temperature controller that is used for air conditioner, adopts the temperature controller of fuzzy logic inference control method especially.
Traditional air conditioner temperature controller is only controlled cold (heat) source, because the conduction of temperature and the hysteresis of measurement.Make controlled room temperature fluctuation bigger.This fluctuation is generally at ± 7 ℃.So big temperature fluctuation is felt very ill people, and therefore, existing air conditioner all is provided with the rotating speed of manual adjustment blower fan as auxiliary control.However, because human body temperature-sensitive ability is relatively poor, also have hysteresis, after therefore artificial participation wind speed was regulated, controlled room temperature fluctuation was generally still greater than ± 3 ℃.Temperature control is bad, will cause the waste in excessive use cold (heat) source, causes the skewness of room temperature, and the temperature difference of main air duct and non-main air duct is about 4 ℃ generally speaking.
The method of improving the problems referred to above is that temperature controller can be controlled the rotation speed of fan of cold (heat) flow table pipe back automatically in control cold (heat) source switch.For example: Chinese patent 96234353.6 discloses a kind of fan coil air-conditioner fuzzy controller technology, this controller is by power circuit, temperature setting circuit, temperature sensor, amplifier, single-chip microcomputer, digital display circuit, draught fan control circuit and solenoid valve control circuit are formed, calculate indoor temperature and design temperature deviate and rate of temperature change respectively by single-chip microcomputer, then according to the blower fan that weaves in advance, the magnetic valve fuzzy control rule table, draw the size of aequum by the single-chip microcomputer automatic look-up table, output to blower fan respectively by single-chip microcomputer again, solenoid valve control circuit, the air quantity and the water yield are controlled, thereby improved the stability of air-conditioner temperature.It is said, its control accuracy can reach ± and 0.5 ℃, and energy-conservation 20%.This is a good patented technology, still, still not as people's will be, as logical inference machine, its antijamming capability is relatively poor with single-chip microcomputer, cost is also higher.
Goal of the invention of the present utility model is, for further overcoming the deficiency in the above-mentioned technology, provides that a kind of cost is low, antijamming capability is stronger, the energy-saving type air conditioner temperature controller that control accuracy is high.
Air conditioner temperature controller of the present utility model mainly is made up of power supply, temperature setting device, temperature sensor, logical inference machine, blower fan and solenoid valve controller, it is characterized in that, described logical inference machine is by the receptance function operational amplifier, and door circuit and three-eight decoders constitute; Temperature setting circuit, temperature sensing circuit and receptance function operational amplifier I
C1The input of-A connects, receptance function operational amplifier I
C1The output of-C is with the comparator I of door circuit
C2-A, I
C2-B, I
C2The input of-C connects, and the output of door circuit is through the same respectively blower fan of three-eight decoders, solenoid valve controller I
C45,7,9,10 pin join, pass through relay J by blower fan, solenoid valve controller at last
0, J
1, J
2, J
3, control magnetic valve and be placed on the blower fan of cold (heat) flow table pipe back respectively, for unit, then directly control compression pump and blower fan.
Description of drawings is as follows:
Fig. 1. be block diagram of the present utility model;
Fig. 2. be circuit diagram of the present utility model.
Be further elaborated below in conjunction with accompanying drawing:
In accompanying drawing 2, grey frame 1 is a temperature setting circuit, and 2 is temperature sensing circuit, and 3 is power circuit, and 4 is the receptance function computing circuit, and 5 is the door circuit, and 6 is three-eight decoder circuits, and 7 is the blower fan solenoid valve control circuit.Wherein, receptance function operational amplifier, door circuit and three-eight decoders adopt device operational amplifier LM324, four comparators 339 and two-four decoders, 4555 elements respectively.
Temperature setting circuit 1 and temperature sensor circuit 2 pass through resistance R respectively
6, R
7With the operational amplifier I in the receptance function computing circuit 4
C1The input utmost point of-A connects, with set amount T
CWith measurement value sensor T
gInput receptance function computing circuit, the receptance function computing circuit is according to control deviation I
e=I
c-I
g, and control room temperature Expert Rules (seeing Table), carry out fuzzy logic inference, draw control valve U
c, should
UC is by receptance function operational amplifier I
C1-C exports, and directly enters the comparator I of door circuit
C2-A, I
C2-B, I
C2The input utmost point of-C is with U
cBe transformed into door status signal φ
A, φ
B, φ
C, controlled quentity controlled variable U
cWith rotation speed of fan state Y
1, Y
2, Y
3And magnetic valve state Y
0Relation as shown in Table 2.With controlled quentity controlled variable U
cThe relation that is transformed into the door status signal sees Table three.
Status signal φ
A, φ
B, φ
CWith three-eight decoder I
C3(2,14), (3,13), (1,15) pin connect, three-eight decoder circuits are with door status signal φ
A, φ
B, φ
CBe transformed into the working state signal j of control relay
1, j
2, j
3, door state and duty relation are with shown in the table four.
Blower fan, solenoid valve controller I
C4Adopt four comparators 339, I in 5 pin of this controller and the door circuit
C2-A comparator output terminal connects, and 7,9,10 pin of controller are connected with 10,12,4 pin of three-eight decoders respectively, blower fan, solenoid valve controller I
C4With φ
6, j
1, j
2, j
3Be transformed into driving relay status signal, be input to relay J
0, J
1, J
2, J
3
In solenoid valve control circuit, described magnetic valve is installed in the terminal radiator inleting pipe mouth of central air conditioning place, and electromagnetic valve coil Z is through relay J
0With I
C42 pin join, M1 is three utmost point fractional horse-power one cameras in draught fan control circuit, its three utmost points are respectively through relay j
1*, J
2*, J
3* the contact and the live wire of civil power join, the relay J of control blower fan M1 wind speed
1, J
2, J
3Respectively with I
C41,14,13 pin join.
Temperature controller of the present utility model is applicable on central air conditioner family air conditioner and the unit air-conditioner, and its maximum characteristics are that automaticity is high, control accuracy is 25 ℃ ± 0.4 ℃; Indoor temperature can arbitrarily be set between 10 ℃ to 30 ℃; Because accuracy of temperature control improved, energy-conservationly reach 20%; Because controller can select best air supply mode, the air-supply time shortens dramatically, and the temperature difference of indoor main air duct and non-main air duct drops to 1 ℃ by original 4 ℃; Compare the fuzzy controller of single-chip microcomputer structure, circuit cost is low, and has stronger antijamming capability.
Subordinate list is as follows: table one
Table two
Table three
Table four
| T c | The blower fan wind speed | Magnetic valve | |||
| At a high speed | Middling speed | Low speed | Zero-speed | ||
| Honest | Connect | 0 | 0 | 0 | Connect |
| The center | 0 | Connect | 0 | 0 | Connect |
| Just little | 0 | 0 | Connect | 0 | Connect |
| 0 | 0 | 0 | 0 | Connect | 0 |
| The door state | The relay duty | ||||
| φ A | φ B | φ C | j 1 | j 2 | j 3 |
| 0 | 1 | 1 | 1 | 0 | 0 |
| 0 | 0 | 1 | 0 | 1 | 0 |
| 0 | 0 | 0 | 0 | 0 | 1 |
Claims (2)
1. fuzzy logic inference temperature controller that is used for air conditioner, mainly form by power supply, temperature setting circuit, temperature sensor, logical inference machine, blower fan and solenoid valve controller, it is characterized in that described logical inference machine is to be made of receptance function computing circuit, door circuit and three-eight decoder circuits; Temperature setting circuit, temperature sensing circuit and receptance function operational amplifier I
C1The input of-A connects, receptance function operational amplifier I
C1The output of-C is with the comparator I of door circuit
a-A, I
a-B, I
aThe input of-C connects, and the output of door circuit connects through the same respectively blower fan of three-eight decoders, solenoid valve controller, controls blower fan and magnetic valve by blower fan, solenoid valve controller respectively by relay at last, to unit face speech, then controls blower fan and compression pump.
2. temperature controller according to claim 1 is characterized in that, wherein receptance function arithmetic unit, door circuit and three-eight decoders adopt device operational amplifier LM324, four comparators 339 and two-four decoders, 4555 original papers respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98204515 CN2336254Y (en) | 1998-05-12 | 1998-05-12 | Fuzzy logic inference temp. controller for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98204515 CN2336254Y (en) | 1998-05-12 | 1998-05-12 | Fuzzy logic inference temp. controller for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2336254Y true CN2336254Y (en) | 1999-09-01 |
Family
ID=33961100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98204515 Expired - Fee Related CN2336254Y (en) | 1998-05-12 | 1998-05-12 | Fuzzy logic inference temp. controller for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2336254Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479388A (en) * | 2017-09-26 | 2017-12-15 | 西南科技大学 | A kind of classroom central air-conditioning and the energy-saving control system and control method of illumination |
-
1998
- 1998-05-12 CN CN 98204515 patent/CN2336254Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479388A (en) * | 2017-09-26 | 2017-12-15 | 西南科技大学 | A kind of classroom central air-conditioning and the energy-saving control system and control method of illumination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |