CN101012954A - Air-conditioning cold flow self-adaptive energy-saving control system - Google Patents
Air-conditioning cold flow self-adaptive energy-saving control system Download PDFInfo
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- CN101012954A CN101012954A CN 200710026877 CN200710026877A CN101012954A CN 101012954 A CN101012954 A CN 101012954A CN 200710026877 CN200710026877 CN 200710026877 CN 200710026877 A CN200710026877 A CN 200710026877A CN 101012954 A CN101012954 A CN 101012954A
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Abstract
The invention discloses a cold self-adaptive energy-saving controller of air conditioner, comprising a PLC programmable fuzzy processor, several fans, several temperature-humidity sensors, and several temperature-humidity data processors connected with the PLC via PLC communication modules, at same number as the temperature-humidity sensors, and several frequency changers connected with the PLC relative to the fans, while one frequency changer controls one group of fan. The temperature-humidity data processors process the temperature-humidity signal and convert analogue-digit, to be sent to the PLC programmable fuzzy processor. The PLC via the temperature-humidity signal calculates out the best parameters of air conditioner, and sends command to the frequency changers to control the switch and refrigeration of fans.
Description
Technical field
The present invention relates to air-conditioning control field, relate in particular to a kind of air-conditioning cold flow self-adaptive energy-saving control system.
Background technology
Existing room system generally is the temperature reference value according to air-conditioning unit equipment return air inlet, by manual mode set compressor duty, revise the operational factor of air-conditioning.Yet the gas flow temperature of air-conditioning unit equipment return air inlet can not accurately be represented the environment temperature of each switch tank bracket, and both often can have very big deviation.In addition on the one hand, the operational factor of revising air-conditioning with manual mode not only bothers, and clearly the duty of air-conditioning changes the actual humiture variation that always lags behind in the machine room, causes indoor humiture can not maintain the ideal value of a certain setting reposefully.
For addressing the above problem, the someone proposes to adopt thermally sensitive device to detect the environment temperature of machine room at present, and detected ambient temperature signal is handled, and then send the operational factor of instruction modification air-conditioning by microprocessor with signal processing units such as corresponding microprocessors.This class technology is higher than the mode of manual adjustments really on real-time that air conditioner operation parameters is revised and accuracy, but still exist not enough: to the quantity of humiture collection point in the machine room very little, cause the signal of being gathered to reflect the humiture of machine room truly comprehensively; The temperature-humidity signal of being gathered is directly inputted into microprocessor without processing in earlier stage, brings bigger burden for the work of microprocessor.
Summary of the invention
At the deficiencies in the prior art, the present invention aims to provide a kind of air-conditioning cold flow self-adaptive energy-saving control system, this system is provided with a plurality of humiture collection points indoor, transport to PLC fuzzy processor able to programme again after handling temperature-humidity signal premenstruum (premenstrua) and further process, PLC sends the freezing air quantity that air-conditioning is regulated in the control corresponding instruction.
For achieving the above object, the present invention adopts following technical scheme: a kind of air-conditioning cold flow self-adaptive energy-saving control system, comprise PLC fuzzy processor able to programme, some groups of blower fans, some groups of Temperature Humidity Sensors, and it is characterized in that also comprising:
Several are by the humiture data processor that the PLC communication module is connected with PLC fuzzy processor able to programme, and its quantity is corresponding with the group number of Temperature Humidity Sensor, the signal that one group of Temperature Humidity Sensor of a humiture data processor processes is gathered;
The converter unit that several are connected with PLC fuzzy processor able to programme, its quantity is corresponding with the group number of blower fan, and a converter unit is controlled one group of blower fan;
Described humiture data processor is resent to PLC fuzzy processor able to programme after temperature-humidity signal is compared processing and analog-to-digital conversion; The temperature-humidity signal that PLC fuzzy processor able to programme is uploaded according to each humiture data processor calculates best air conditioner operation parameters, and sends instruction to converter unit, by the unlatching and the refrigerating capacity thereof of converter unit control blower fan.
Above-mentioned humiture data processor comprises signal comparing unit, A/D converting unit, central processing unit, the RS485 communication module that connects successively, wherein the signal comparing unit is connected with Temperature Humidity Sensor, and the RS485 communication module is connected with PLC fuzzy processor able to programme.
Above-mentioned humiture data processor also comprises the led display unit that is connected with central processing unit.
Above-mentioned humiture data processor also comprises the alarm unit that is connected with central processing unit.
Above-mentioned converter unit comprises successively the breaker that connects, reactor, power contactor, input filter, frequency converter, output filter, the output contactor that is connected with blower fan, wherein power contactor, frequency converter, output contactor are connected with the PLC digital module respectively, and frequency converter also is connected with PLC communication module, PLC analog module.
Above-mentioned air-conditioning cold flow self-adaptive energy-saving control system also comprises the center monitoring main frame, and this center monitoring main frame is communicated by letter with PLC fuzzy processor able to programme by the RS232 interface, and is connected with air-conditioner host by the air-conditioning communication module.
The present invention compared with prior art is provided with a plurality of Temperature Humidity Sensors in machine room, the temperature-humidity signal of being gathered can reflect the humiture environment of machine room comprehensively truly; Temperature-humidity signal is imported PLC fuzzy processor able to programme again after handling early stage, not only alleviated the work load of PLC, has accelerated the real-time control and regulation of PLC to air conditioner operation parameters, has also simplified writing of PLC processor program widely; PLC can calculate the optimal parameter of air-conditioning unit operation according to the ambient parameters such as humiture of gathering, and revises the unlatching platform number and the freezing air quantity of blower fan in real time, thereby makes air-conditioning be in optimum Working all the time, has saved the energy effectively.
Description of drawings
Fig. 1 is a system architecture schematic diagram of the present invention;
Fig. 2 is a humiture data processor structural representation of the present invention;
Fig. 3 is a converter unit structural representation of the present invention.
The specific embodiment
Contain 3 Temperature Humidity Sensors with three groups of Temperature Humidity Sensors, every group below, two groups of blower fans, every group contain 3 typhoon machines, and three air-conditioner hosts are example, further specify the present invention:
As shown in Figure 1, first to the 3rd Temperature Humidity Sensor is connected with the first humiture data processor, the the 4th to the 6th Temperature Humidity Sensor is connected with the second humiture data processor, the the 7th to the 9th Temperature Humidity Sensor is connected with the 3rd humiture data processor, and first, second, third humiture data processor is connected with PLC fuzzy processor able to programme by first, second, third PLC communication module respectively.And first to the 3rd blower fan is connected with first converter unit, the the 4th to the 6th blower fan is connected with second converter unit, first converter unit is communicated by letter with PLC fuzzy processor able to programme by the 6th PLC communication module, a PLC digital module, a PLC analog module, and second converter unit is communicated by letter with PLC fuzzy processor able to programme by the 7th PLC communication module, the 2nd PLC digital module, the 2nd PLC analog module.The center monitoring main frame is communicated by letter with PLC fuzzy processor able to programme by a RS232 interface, and is connected with first to the 3rd air-conditioner host by first to the 3rd air-conditioning communication module.In addition, also be provided with the power monitoring module at air-conditioning system power supply input side, it is connected with PLC fuzzy processor able to programme by the 5th PLC communication module; Be installed on the terminal farthest wind pressure sensor of air-conditioning service object machine room and be connected with PLC fuzzy processor able to programme, be used to detect the terminal farthest wind pressure value signal of machine room by the 4th PLC communication module.The user can also be by being connected in PLC fuzzy processor able to programme the text maninulation panel of the 2nd RS232 interface, the operational factor of input air-conditioning.
As shown in Figure 2, the humiture data processor comprises signal comparing unit, A/D converting unit, central processing unit, the RS485 communication module that connects successively, be connected by the Temperature Humidity Sensor of signal comparing unit with same group, the RS485 communication module is then realized communicating by letter between humiture data processor and the PLC fuzzy processor able to programme.In addition, central processing unit also is connected with led display unit, alarm unit.The working power of each unit module of humiture data processor provides by the isolated form power supply unit, and the isolated form power supply unit adopts photoelectric isolation technology, has reduced external disturbance.
As shown in Figure 3, converter unit comprises successively the breaker that connects, reactor, power contactor, input filter, frequency converter, output filter, the output contactor that is connected with blower fan, in the present embodiment, it is corresponding one by one with three typhoon machines to have three output contactors.Wherein power contactor, frequency converter, output contactor are connected with the PLC digital module respectively, are used to receive the logic control instruction that PLC fuzzy processor able to programme sends; Frequency converter also is connected with PLC communication module, PLC analog module, thereby communicates with PLC fuzzy processor able to programme, uploads or descend the operational factor of biography blower fan.Because the distance between AC power and the frequency converter is distant, the distributed inductance and the distribution capacity of transmission line all be can not ignore, so between the breaker of converter unit and input contactor, be connected in series a reactor, thereby higher harmonic components in the minimizing input voltage, input current; Input and output at frequency converter respectively are provided with a wave filter, are the higher harmonic components that is used for leaching circuit.
The course of work of the present invention is as follows:
(1). gather the temperature-humidity signal of building environment by Temperature Humidity Sensor, same group Temperature Humidity Sensor is delivered to same humiture data processor with signal, by comparing unit one group of temperature-humidity signal is compared, comparing unit will be exported maximum temperature-humidity signal to A/D converting unit and carry out the analog digital conversion, the temperature-humidity signal that converts number format to will input to central processing unit, be uploaded in the memory of PLC fuzzy processor able to programme by the RS485 communication module again.Simultaneously, central processing unit is also by led display unit, informs to be used for whether operate as normal of Temperature Humidity Sensor; When the humiture data processor breaks down or the value of temperature-humidity signal when higher, central processing unit sends warning signal by alarm unit.
(2) .PLC fuzzy processor able to programme and center monitoring host communication, the operational factor of reading every air-conditioner host is sent in the Programmable Logic Controller reservoir; Each parameter value of text maninulation panel input is read in PLC fuzzy processor able to programme and the communication of text maninulation panel, is sent in the Programmable Logic Controller reservoir; PLC fuzzy processor able to programme reads the parameter value of each frequency converter by the inverter communication of PLC communication module and each converter unit, is sent in the Programmable Logic Controller reservoir; PLC reads the information of wind pressure sensor, power monitoring module, with wind pressure signal and power parameter signal storage in the Programmable Logic Controller memory.
(3) .PLC fuzzy processor able to programme carries out the fuzzy comparison of program, reasoning, calculating to the data in the Programmable Logic Controller reservoir, the final optimum operation pattern of determining air-conditioning system this moment, promptly open the platform number of air-conditioner host this moment, which platform is opened, and the blower fan start platform number of air-conditioning system, which platform leave, every typhoon machine is started shooting frequency (being air quantity) etc.
(4) .PLC with air-conditioner host start shooting the platform number, open data upload such as any platform air-conditioner host to the air conditioning monitoring main frame, by transmission control system operation of air conditioner order parameter under the center monitoring main frame, open several this moment, open which platform air-conditioner host thereby reach control; PLC is by power contactor, frequency converter and the output contactor of PLC digital module output control instruction to converter unit, the unlatching platform number of control blower fan; PLC carries out D/A conversion with the blower fan frequency signal of starting shooting by the PLC analog output module, converts the 4-20mA current signal to as the given signal of the frequency of frequency converter, the output frequency of control frequency converter, thereby the air quantity of control blower fan.Because the given frequency of the rotating speed of freezing blower fan and motor is directly proportional, the shaft power of blower fan becomes cubic relationship with the rotating speed of blower fan, the air quantity of blower fan and the rotating speed of blower fan are directly proportional, incoming frequency by the step-less adjustment blower fan, do not carry on a shoulder pole and to save a large amount of blower fan electric energy according to the terminal stepless adjusting fan delivery of machine room.
In addition, each parameter in the Programmable Logic Controller memory can show by the text maninulation panel selectively in real time, the user also can make amendment, revise the parameter value in the Programmable Logic Controller memory by the text maninulation panel, realizes the manually operational factor of control air-conditioning.
Claims (6)
1. an air-conditioning cold flow self-adaptive energy-saving control system comprises PLC fuzzy processor able to programme, some groups of blower fans, some groups of Temperature Humidity Sensors, it is characterized in that also comprising:
Several are by the humiture data processor that the PLC communication module is connected with PLC fuzzy processor able to programme, and its quantity is corresponding with the group number of Temperature Humidity Sensor, the signal that one group of Temperature Humidity Sensor of a humiture data processor processes is gathered;
The converter unit that several are connected with PLC fuzzy processor able to programme, its quantity is corresponding with the group number of blower fan, and a converter unit is controlled one group of blower fan;
Described humiture data processor is resent to PLC fuzzy processor able to programme after temperature-humidity signal is compared processing and analog-to-digital conversion; The temperature-humidity signal that PLC fuzzy processor able to programme is uploaded according to each humiture data processor calculates best air conditioner operation parameters, and sends instruction to converter unit, by the unlatching and the refrigerating capacity thereof of converter unit control blower fan.
2. air-conditioning cold flow self-adaptive energy-saving control system according to claim 1, it is characterized in that: described humiture data processor comprises signal comparing unit, A/D converting unit, central processing unit, the RS485 communication module that connects successively, wherein the signal comparing unit is connected with Temperature Humidity Sensor, and the RS485 communication module is connected with PLC fuzzy processor able to programme.
3. air-conditioning cold flow self-adaptive energy-saving control system according to claim 2 is characterized in that: described humiture data processor also comprises the led display unit that is connected with central processing unit.
4. air-conditioning cold flow self-adaptive energy-saving control system according to claim 2 is characterized in that: described humiture data processor also comprises the alarm unit that is connected with central processing unit.
5. air-conditioning cold flow self-adaptive energy-saving control system according to claim 1, it is characterized in that: described converter unit comprises successively the breaker that connects, reactor, power contactor, input filter, frequency converter, output filter, the output contactor that is connected with blower fan, wherein power contactor, frequency converter, output contactor are connected with the PLC digital module respectively, and frequency converter also is connected with PLC communication module, PLC analog module.
6. air-conditioning cold flow self-adaptive energy-saving control system according to claim 1, it is characterized in that: also comprise the center monitoring main frame, this center monitoring main frame is communicated by letter with PLC fuzzy processor able to programme by the RS232 interface, and is connected with air-conditioner host by the air-conditioning communication module.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100268778A CN100445654C (en) | 2007-02-12 | 2007-02-12 | Air-conditioning cold flow self-adaptive energy-saving control system |
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| CNB2007100268778A CN100445654C (en) | 2007-02-12 | 2007-02-12 | Air-conditioning cold flow self-adaptive energy-saving control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162374A (en) * | 2011-12-12 | 2013-06-19 | 珠海格力电器股份有限公司 | Air-conditioner system control method and air-conditioner system control device |
| CN102147137B (en) * | 2010-02-04 | 2013-08-07 | 珠海格力电器股份有限公司 | Temperature and humidity linkage control method of air conditioner |
| CN104019526A (en) * | 2014-06-24 | 2014-09-03 | 河海大学常州校区 | Fussily self-adaptive PID temperature and humidity control system and method based on improved PSO (Particle Swarm Optimization) algorithm |
| CN106440269A (en) * | 2015-08-17 | 2017-02-22 | 南京佰福沃电子技术有限公司 | Centralized control system and method for machine room air conditioner unit group |
| WO2017071483A1 (en) * | 2015-10-28 | 2017-05-04 | 华为技术有限公司 | Room-level air-conditioning adjustment method and apparatus, and controller |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207867A (en) * | 2011-03-30 | 2012-10-25 | Hitachi Appliances Inc | Air conditioning control system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2948029B2 (en) * | 1992-09-22 | 1999-09-13 | 松下電工株式会社 | Air conditioning control system |
| CN2472116Y (en) * | 2001-03-20 | 2002-01-16 | 广东省科学院自动化工程研制中心 | Fuzzy control energy saver for central air conditioner |
| US6578770B1 (en) * | 2002-04-09 | 2003-06-17 | Howard B. Rosen | Thermostat incorporating a carbon dioxide sensor suitable for reading using potentiostat techniques, and environmental control system incorporating such thermostat |
| CN2720311Y (en) * | 2004-07-13 | 2005-08-24 | 林清矫 | Indoor-air-humidity automatic controlling device |
| US20070013357A1 (en) * | 2005-07-12 | 2007-01-18 | Delta Electronics, Inc. | Inverter apparatus with built-in programmable logic-controller |
| CN201014676Y (en) * | 2007-02-12 | 2008-01-30 | 广州金关节能科技发展有限公司 | Air conditioner cooling volume self-adaptive energy-saving controller |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147137B (en) * | 2010-02-04 | 2013-08-07 | 珠海格力电器股份有限公司 | Temperature and humidity linkage control method of air conditioner |
| CN103162374A (en) * | 2011-12-12 | 2013-06-19 | 珠海格力电器股份有限公司 | Air-conditioner system control method and air-conditioner system control device |
| CN103162374B (en) * | 2011-12-12 | 2016-03-30 | 珠海格力电器股份有限公司 | The control method of air-conditioner system and device |
| CN104019526A (en) * | 2014-06-24 | 2014-09-03 | 河海大学常州校区 | Fussily self-adaptive PID temperature and humidity control system and method based on improved PSO (Particle Swarm Optimization) algorithm |
| CN104019526B (en) * | 2014-06-24 | 2016-08-17 | 河海大学常州校区 | Improve PSO algorithm Fuzzy Adaptive PID temperature and humidity control system and method |
| CN106440269A (en) * | 2015-08-17 | 2017-02-22 | 南京佰福沃电子技术有限公司 | Centralized control system and method for machine room air conditioner unit group |
| WO2017071483A1 (en) * | 2015-10-28 | 2017-05-04 | 华为技术有限公司 | Room-level air-conditioning adjustment method and apparatus, and controller |
| US10670294B2 (en) | 2015-10-28 | 2020-06-02 | Huawei Technologies Co., Ltd. | In-room air conditioner adjustment method, apparatus, and controller |
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Granted publication date: 20081224 Termination date: 20170212 |