CN102494386B - Method and system for controlling double-machine backups of air conditioners - Google Patents
Method and system for controlling double-machine backups of air conditioners Download PDFInfo
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- CN102494386B CN102494386B CN201110368031.9A CN201110368031A CN102494386B CN 102494386 B CN102494386 B CN 102494386B CN 201110368031 A CN201110368031 A CN 201110368031A CN 102494386 B CN102494386 B CN 102494386B
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Abstract
The invention discloses a method and system for controlling double-machine backups of air conditioners. The method for controlling the double-machine backups of the air conditioners comprises the following steps: (1) establishing communication connection between host machines and attached machines in the air conditioners, wherein the host machines and the attached machines in the air conditioners are respectively connected with control units; (2) performing real-time acquisition on the running status information of the host machines and the attached machines in the air conditioners by the control units, and marking as a parameter S, wherein the values of the parameter S are capable of reflecting the following statuses: the two air conditioners respectively and normally run and one of the two air conditioners normally runs; and (3) according to the values of the parameter S, executing different control steps. According to the method for controlling the double-machine backups of the air conditioners, different parameter values of a complicated environment can be reflected through detection, and the control units are adaptive to the requirements of the environment according to the parameter values to control the two air conditioners to cooperatively run, thereby, not only can the refrigeration power consumption of a whole base station be reduced but also the requirement on controlling the internal temperature of the whole base station can be met.
Description
Technical field
The present invention relates to a kind of air-conditioning dual-host backup control method and control system, belong to refrigeration plant control technology field.
Background technology
Along with the develop rapidly of China's mobile communication cause, the mobile communication base station sum of three large telecom operators has approached 1,500,000; Along with 3G networking continues to carry out, WiMAX upgrading speed-raising and WIFI network design are strengthened, the place capacity of each base station just constantly increases, and effective control of the environment temperature of inside of base station just more becomes basis and the essential condition of communication apparatus reliability service.
The object that base station air conditioner is used is mainly to control inside of base station temperature, guaranteeing that inside of base station temperature does not reach energy-conservation object on the basis of superelevation as much as possible, for adopting dual-host backup function, the inside of base station of two air-conditionings is installed simultaneously, how effectively to utilize the status information of two air-conditionings, by different running status contrasts and the environmental aspect of two air-conditionings, meeting above-mentioned requirements is the main purpose of this technical research.
Most base station air conditioner, in the technical employing of dual-host backup dry contact mode, realize, it just realizes the dual-host backup air-conditioning that partly can adopt communication mode, also just simply adopt time-switching mode, due to inside of base station circumstance complication, uncontrollable duplex running, to be applicable to various complex environments.And in running, control module cannot obtain the running state information of air-conditioning, once wherein a machine breaks down, control module cannot be known, and can not control an other fault-free machine continuous service, finally cause base station excess Temperature, the equipment operation in base station is affected.
Based on this, how to research and develop a kind of air-conditioning two-shipper control method and control system, can control for complex environment the operation of air-conditioning two-shipper, increase adaptive capacity to environment, within having ensured when reaching energy-conservation object that base station temperature maintains safe range.
Summary of the invention
The present invention is low in order to solve existing air-conditioning two-shipper control method adaptive capacity to environment, can not realize the problem of Self Adaptive Control, and a kind of air-conditioning dual-host backup control method and control system are provided, can Self Adaptive Control, there is stronger adaptive capacity to environment.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of air-conditioning dual-host backup control method, comprises the following steps:
(1), set up the communication connection between air-conditioner host and random, and both are connected with control module respectively;
(2), the running state information of control module Real-time Collection air-conditioner host and random, be labeled as parameter S, wherein, the value of parameter S comprises: all normally operation and an air conditioner normally move two air conditioners;
(3), according to the value of parameter S, carry out different control steps.
Further, owing to first obtaining two air conditioners, running status is very important respectively, if only have an air conditioner normally to move, without make self adaptation according to complex environment, regulates, and therefore, step (3) comprises following sub-step:
(31), if only have an air conditioner normally to move, control the air conditioner continuous service of this normal operation;
(32), if two air conditioners all normally move, control two air conditioners wheels and change jobs.
Further again, when two air conditioners all normally move, can face various complex environments around, in step (32), also comprise Real-time Collection thermic load parameter F and heat load distribution balance parameters X, wherein, thermic load parameter F comprises indoor high load capacity type FH and indoor underload type FL, and heat load distribution balance parameters X comprises that the mutual unobstructed balanced type X0J of two air conditioners, single air conditioner stop that unbalanced type X1J and two air conditioners stop unbalanced type X2J mutually.
Concrete, the acquisition mode of thermic load parameter F is: during arbitrary work of two air conditioners, temperature change value T in this air conditioner sensing chamber, if T higher than threshold value T1, is indoor high load capacity type FH, otherwise is indoor underload type FL;
The acquisition mode of heat load distribution balance parameters X is: during air conditioner A work, temperature change value in air conditioner B sensing chamber, if the indoor temperature change generated in case value that air conditioner B detects is greater than the indoor temperature change generated in case value that air conditioner A detects self, air conditioner A is unobstructed to B, otherwise stop for having, wherein, air conditioner A is air-conditioner host or random, and corresponding, air conditioner B is air-conditioning random or main frame, when two air conditioners mutual when unobstructed, for X0J, when only there is a sheet resistance gear between two air conditioners, be X1J, when two air conditioners stop mutually, be X2J.
Further, in step (32), if thermic load parameter F is indoor high load capacity type FH, illustrate that only moving an air conditioner cannot meet the work of lowering the temperature in base station, controls two air conditioners and moves simultaneously; Otherwise, according to two air conditioners of value control of heat load distribution balance parameters X, carry out different instructions.
Further, if heat load distribution balance parameters X is X0J, gather outdoor temperature difference parameters P, wherein, the acquisition method of P is: two outdoor temperature difference △ T that air conditioner is consecutively detected, if △ T is greater than threshold value T2, is the outdoor temperature difference type PH of High Defferential, otherwise is the outdoor temperature difference type PL of low difference, when outdoor temperature difference parameters P is PH, move the air-conditioning that detected outdoor temperature is low, otherwise, move the air-conditioning that detected outdoor temperature is high;
If heat load distribution balance parameters X is X1J, be that one of them air conditioner does not receive wind when other air conditioner work, this air conditioner is for being blocked machine, another air conditioner is the non-machine that is blocked, and when non-, is blocked machine when operation, carries out corresponding operation while being X0J by parameter X, when being blocked machine operation, non-ly be blocked temperature T 3 in the real-time sensing chamber of machine, if T3 is greater than threshold value T4, starts the non-machine that is blocked and move simultaneously;
If heat load distribution balance parameters X is X2J, two air conditioners are the machine of being blocked, and during one of them air conditioner work, temperature T 5 in the real-time sensing chamber of another one air conditioner, if T5 is greater than threshold value T4, starts two air conditioners and move simultaneously.
Based on above-mentioned a kind of air-conditioning dual-host backup control method, the present invention provides a kind of air-conditioning dual-host backup control system simultaneously, comprises air-conditioner host, air-conditioning random and control module, further comprising the steps of:
(1), set up the communication connection between air-conditioner host and random, and both are connected with control module respectively;
(2), the running state information of control module Real-time Collection air-conditioner host and random, be labeled as parameter S, wherein, the value of parameter S comprises: all normally operation and an air conditioner normally move two air conditioners;
(3), according to the value of parameter S, control module is carried out different control steps.
Compared with prior art, advantage of the present invention and good effect are: by detecting the different parameters value that can reflect complex environment, and making two air-conditioning cooperation operations of control module adaptive environment demand control according to parameter value, the refrigeration power consumption that not only can reduce whole base station be the more important thing is and can be met the temperature controlled demand of whole inside of base station.
Read by reference to the accompanying drawings after the detailed description of embodiment of the present invention, it is clearer that the other features and advantages of the invention will become.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment flow chart of air-conditioning dual-host backup control method proposed by the invention.
The specific embodiment
The air-conditioning dual-host backup control method of the present embodiment is low in order to solve existing air-conditioning two-shipper control method adaptive capacity to environment, can not realize the problem of Self Adaptive Control, by setting up the communication connection between air-conditioner host and random, and both are connected with control module respectively, by two air conditioner collections of control module control, can be reflected the parameter of complex environment, and carry out corresponding operation according to two air conditioners of parameter value control, can meet the demand of base station cooling, can farthest reduce energy consumption simultaneously.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail.
Embodiment mono-, shown in Figure 1, the air-conditioning dual-host backup control method of the present embodiment, comprises the following steps:
S1, set up the communication connection between air-conditioner host and random, and both are connected with control module respectively;
The running state information of S2, control module Real-time Collection air-conditioner host and random, is labeled as parameter S, and wherein, the value of parameter S comprises: all normally operation and an air conditioner normally move two air conditioners;
S3, according to the value of parameter S, carry out different control steps.
In step S1, the communication connection of setting up is 485 connections.
Owing to first obtaining two air conditioners, running status is very important respectively, running state of air conditioner is larger on the impact of inside of base station temperature, in traditional scheme control, when two machines are all normal, carry out time-switching no problem, but can cause base station temperature rising while running into again this operation of air conditioner when fault that cannot freeze appears in certain air-conditioning.Therefore to consider the current running status of different air-conditionings, the current state of two air conditioners that collect by communication according to control module, judge that whether machine is in state working properly, by running status, confirm operation of air conditioner mode, for there being certain mechanical disorder situation, now need to, take satisfied temperature control as the first element, air-conditioning state parameter be represented with S, all normally operation and an air conditioner normally move two kinds of situations to be divided into two air conditioners.When only having an air conditioner normally to move, to control temperature as main purpose, so now can not switch; need normal machine running, fault machine is shut down, when two air conditioners all normally move; consider that two air-conditioning wheels change jobs, and guarantee that two air-conditioning groundwork times are identical.If only have an air conditioner normally to move, without make self adaptation according to complex environment, regulate, therefore, step S3 comprises following sub-step:
If S31 only has an air conditioner normally to work, control the air conditioner continuous service of this normal work;
If two air conditioners of S32 are all normally worked, control two air conditioner wheels and change jobs.
As a concrete embodiment, when two air conditioners are all normally worked, can face various complex environments around, therefore need to carry out different control methods according to different environment, in the present embodiment, the parameter of involved reaction environment complexity comprises air-conditioning installation site, running state of air conditioner, inside of base station hot load state etc., relevant environment parameter value all can be divided judgement from the data of air-conditioning collection, thereby judge the feature that the feature in base station own and air-conditioning are installed, then realize the different controlling run methods that control environment.In step S32, also comprise Real-time Collection thermic load parameter F and heat load distribution balance parameters X, it should be noted that, wherein, for inside of base station thermic load, the base station of two air-conditionings has been installed can monitor mutually and Coordination Treatment, the cooling-down effect detecting during by two air-conditioning works is determined relative load of heat, by thermic load parameter with F Parametric Representation, according to different base station inside, may exist the phenomenon of different thermic loads, simultaneously for same base station, Various Seasonal and intraday different period, thermic load is also not identical.Indoor temperature change generated in case when employing is worked by single machine detects, and can judge Indoor Thermal payload, and thermic load parameter F comprises indoor high load capacity type FH and indoor underload type FL.
Because inner relevant device layout can have influence on whole inside of base station temperature field, the space layout of whole base station can have influence on the temperature field of whole base station equally, and the distribution of the thermic load of whole base station simultaneously also can have influence on the temperature field of inside of base station.Correspond to the inside of base station temperature field that an air-conditioning cannot monitor, for the base station that two air-conditionings have been installed, can judge by the indoor environment temperature of two detection of air-conditionings the inside relative installation of two air-conditionings, determine thus associated inner ventilation effect, internal heat load distribution situation, according to heat load distribution, in carrying out the differentiation of environment territory with ventilation effect, heat load distribution balance parameters X comprises that the mutual unobstructed balanced type X0J of two air conditioners, single air conditioner stop that unbalanced type X1J and two air conditioners stop unbalanced type X2J mutually.
It is also different for different thermic loads, requiring the running status of two air-conditionings to require, for fear of an independent air-conditioning, can not meet the high temperature problem requiring and cause, when high load capacity, need to consider to move two air-conditionings, to guarantee the decline of overall base station temperature simultaneously.For the method for operation of F parameter, the indoor temperature change generated in case detecting while working by single machine, as collect indoor temperature and exceeded the temperature that two-shipper moves simultaneously, now air-conditioning out of service also participates in operation.Concrete, the acquisition mode of thermic load parameter F is: during arbitrary work of two air conditioners, temperature change value T in this air conditioner sensing chamber, if T higher than threshold value T1, is indoor high load capacity type FH, otherwise is indoor underload type FL.
The acquisition mode of heat load distribution balance parameters X is: during air conditioner A work, temperature change value in air conditioner B sensing chamber, if the indoor temperature change generated in case value that air conditioner B detects is greater than the indoor temperature change generated in case value that air conditioner A detects self, air conditioner A is unobstructed to B, otherwise stop for having, wherein, air conditioner A is air-conditioner host or random, accordingly, air conditioner B is air-conditioning random or main frame, according to aforesaid way, to air-conditioner host, random detects while working respectively, if testing result when two air conditioners mutual when unobstructed, for X0J, when only there is a sheet resistance gear between two air conditioners, for X1J, when two air conditioners stop mutually, for X2J.
In step S32, if thermic load parameter F is indoor high load capacity type FH, illustrate that only moving an air conditioner cannot meet the work of lowering the temperature in base station, controls two air conditioners and moves simultaneously; Otherwise, according to two air conditioners of value control of heat load distribution balance parameters X, carry out different instructions.It should be noted that, in running, control module is Real-time Collection thermic load parameter F still, once operate accordingly at the indoor high load capacity type FH of execution, met the condition of indoor underload type FL, or when the indoor underload type FL of execution operates accordingly, met the condition of indoor high load capacity type FH, needed to change control strategy.
If mentioned thermic load parameter F above, be indoor underload type FL, judge heat load distribution balance parameters X, if heat load distribution balance parameters X is X0J, also two air conditioners are mutually unobstructed, single air conditioner operation can meet the operation of whole base station, now, no matter for which platform machine operation, ventilate and all can guarantee whole base station demand.In order to save the energy, now consider air-conditioning install opposite position control.Due to different air-conditioning installation sites, be arranged on sunny side such as one, another one is arranged on the back, therefore, the outdoor temperature that two air-conditioners collect is different, and the difference P situation of the outdoor environment temperature collecting according to two air-conditioners is concluded, season in P parameter tracking, outdoor situations constantly changes, within one day, may change repeatedly, therefore the judgement of P parameter is also followed environment and is continued to judge, according to the outdoor temp difference data being consecutively detected, as basis, calculates.According to P parameter difference, judge different time and move different machines, the power consumption of striving for reaching two air-conditionings on the basis of two machine equilibrium operating times is minimum, and object namely selects the mode of the operation of air conditioner that Energy Efficiency Ratio is high to reduce the total run time of two air-conditionings according to ambient conditions.Concrete, the acquisition method of P is: two outdoor temperature difference △ T that air conditioner is consecutively detected, if △ T is greater than threshold value T2, be the outdoor temperature difference type PH of High Defferential, otherwise be the outdoor temperature difference type PL of low difference, when outdoor temperature difference parameters P is PH, move the air-conditioning that detected outdoor temperature is low, otherwise, move the air-conditioning that detected outdoor temperature is high.So both meet the time equalization of two machines, met again the energy-saving and cost-reducing of overall base station.
If heat load distribution balance parameters X is X1J, be that one of them air conditioner does not receive wind when other air conditioner work, this air conditioner is for being blocked machine, another air conditioner is the non-machine that is blocked, when non-, be blocked machine when operation, can guarantee inside of base station temperature equalization, while being X0J by parameter X, carry out corresponding operation, when being blocked machine operation, the space temperature that is blocked region declines slowly, could the temperature by being blocked region slowly to lower by indoor wind convection current completely, thereby cause two results: one is that house interior temperature is unbalanced, may need cooling place on the contrary temperature do not lower, another one result is to cause air-conditioning once working, to reach temperature requirement once the temperature that stops the start of temperature recovery needs because air conditioning exhausting is blocked, cause air-conditioning frequent start-stop, for this type, when being blocked air-conditioning work, will avoid above-mentioned phenomenon, should take following measures to avoid: to be non-ly blocked temperature T 3 in the real-time sensing chamber of machine, if T3 is greater than threshold value T4, start the non-machine that is blocked moves simultaneously,
If heat load distribution balance parameters X is X2J, two air conditioners are the machine of being blocked, and during one of them air conditioner work, temperature T 5 in the real-time sensing chamber of another one air conditioner, if T5 is greater than threshold value T4, starts two air conditioners and move simultaneously.
It should be noted that equally, in running, control module is Real-time Collection heat load distribution balance parameters X still, once variation has occurred parameter, needs to change control strategy, the corresponding control step after execution parameter changes.
Embodiment bis-, air-conditioning dual-host backup control method based in embodiment mono-, the present invention provides a kind of air-conditioning dual-host backup control system simultaneously, comprises air-conditioner host, air-conditioning random and control module, also comprise the involved concrete steps that arrive in embodiment mono-, at this, do not repeat.
Certainly; above-mentioned explanation is not limitation of the present invention; the present invention is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present invention, also should belong to protection scope of the present invention.
Claims (6)
1. an air-conditioning dual-host backup control method, is characterized in that, comprises the following steps:
(1), set up the communication connection between air-conditioner host and random, and both are connected with control module respectively;
(2), the running state information of control module Real-time Collection air-conditioner host and random, be labeled as parameter S, wherein, the value of parameter S comprises: all normally operation and an air conditioner normally move two air conditioners;
(3), according to the value of parameter S, carry out different control steps;
Step (3) comprises following sub-step:
(31), if only have an air conditioner normally to move, control the air conditioner continuous service of this normal operation;
(32), if two air conditioners all normally move, control two air conditioners wheels and change jobs;
In step (32), also comprise Real-time Collection thermic load parameter F and heat load distribution balance parameters X, wherein, thermic load parameter F comprises indoor high load capacity type FH and indoor underload type FL, and heat load distribution balance parameters X comprises that the mutual unobstructed balanced type X0J of two air conditioners, single air conditioner stop that unbalanced type X1J and two air conditioners stop unbalanced type X2J mutually;
The acquisition mode of thermic load parameter F is: during arbitrary of two air conditioners operation, temperature change value T in the air conditioner sensing chamber of operation, if T higher than threshold value T1, is indoor high load capacity type FH, otherwise is indoor underload type FL;
The acquisition mode of heat load distribution balance parameters X is: during air conditioner A operation, temperature change value in air conditioner B sensing chamber, if the indoor temperature change generated in case value that air conditioner B detects is greater than the indoor temperature change generated in case value that air conditioner A detects self, air conditioner A is unobstructed to B, otherwise stop for having, wherein, air conditioner A is air-conditioner host or random, and corresponding, air conditioner B is air-conditioning random or main frame, when two air conditioners mutual when unobstructed, for X0J, when only there is a sheet resistance gear between two air conditioners, be X1J, when two air conditioners stop mutually, be X2J.
2. air-conditioning dual-host backup control method according to claim 1, is characterized in that, in step (32), if thermic load parameter F is indoor high load capacity type FH, controls two air conditioners and moves simultaneously; Otherwise, according to two air conditioners of value control of heat load distribution balance parameters X, carry out different instructions.
3. air-conditioning dual-host backup control method according to claim 2, it is characterized in that, if heat load distribution balance parameters X is X0J, gather outdoor temperature difference parameters P, wherein, the acquisition method of P is: two outdoor temperature difference △ T that air conditioner is consecutively detected, if △ T is greater than threshold value T2, be the outdoor temperature difference type PH of High Defferential, otherwise be the outdoor temperature difference type PL of low difference, when outdoor temperature difference parameters P is PH, move the air-conditioning that detected outdoor temperature is low, otherwise, move the air-conditioning that detected outdoor temperature is high;
If heat load distribution balance parameters X is X1J, be that one of them air conditioner does not receive wind when an other operation of air-conditioner, this air conditioner is for being blocked machine, another air conditioner is the non-machine that is blocked, and when non-, is blocked machine when operation, carries out corresponding operation while being X0J by parameter X, when being blocked machine operation, non-ly be blocked temperature T 3 in the real-time sensing chamber of machine, if T3 is greater than threshold value T4, starts the non-machine that is blocked and move simultaneously;
If heat load distribution balance parameters X is X2J, two air conditioners are the machine of being blocked, and during one of them operation of air-conditioner, temperature T 5 in the real-time sensing chamber of another one air conditioner, if T5 is greater than threshold value T4, starts two air conditioners and move simultaneously.
4. an air-conditioning dual-host backup control system, is characterized in that, comprises air-conditioner host, air-conditioning random and control module, further comprising the steps of:
(1), set up the communication connection between air-conditioner host and random, and both are connected with control module respectively;
(2), the running state information of control module Real-time Collection air-conditioner host and random, be labeled as parameter S, wherein, the value of parameter S comprises: all normally operation and an air conditioner normally move two air conditioners;
(3), according to the value of parameter S, control module is carried out different control steps;
Step (3) comprises following sub-step:
(31) if only have an air conditioner normally to move, the air conditioner continuous service of this normal operation of control module control;
(32) if two all normally operations of air conditioner, two air conditioner wheels of control module control change jobs, and also comprise Real-time Collection thermic load parameter F and heat load distribution balance parameters X, wherein, thermic load parameter F comprises indoor high load capacity type FH and indoor underload type FL, heat load distribution balance parameters X comprises that the mutual unobstructed balanced type X0J of two air conditioners, single air conditioner stop that unbalanced type X1J and two air conditioners stop unbalanced type X2J mutually
Wherein, the acquisition mode of thermic load parameter F is: during arbitrary of two air conditioners operation, temperature change value T in the air conditioner sensing chamber of operation, if T higher than threshold value T1, is indoor high load capacity type FH, otherwise is indoor underload type FL;
The acquisition mode of heat load distribution balance parameters X is: during air conditioner A operation, temperature change value in air conditioner B sensing chamber, if the indoor temperature change generated in case value that air conditioner B detects is greater than the indoor temperature change generated in case value that air conditioner A detects self, air conditioner A is unobstructed to B, otherwise stop for having, wherein, air conditioner A is air-conditioner host or random, and corresponding, air conditioner B is air-conditioning random or main frame, when two air conditioners mutual when unobstructed, for X0J, when only there is a sheet resistance gear between two air conditioners, be X1J, when two air conditioners stop mutually, be X2J.
5. air-conditioning dual-host backup control system according to claim 4, is characterized in that, in step (32), if thermic load parameter F is indoor high load capacity type FH, controls two air conditioners and moves simultaneously; Otherwise, according to two air conditioners of value control of heat load distribution balance parameters X, carry out different instructions.
6. air-conditioning dual-host backup control system according to claim 5, it is characterized in that, if heat load distribution balance parameters X is X0J, gather outdoor temperature difference parameters P, wherein, the acquisition method of P is: two outdoor temperature difference △ T that air conditioner is consecutively detected, if △ T is greater than threshold value T2, be the outdoor temperature difference type PH of High Defferential, otherwise be the outdoor temperature difference type PL of low difference, when outdoor temperature difference parameters P is PH, move the air-conditioning that detected outdoor temperature is low, otherwise, move the air-conditioning that detected outdoor temperature is high;
If heat load distribution balance parameters X is X1J, be that one of them air conditioner does not receive wind when an other operation of air-conditioner, this air conditioner is for being blocked machine, another air conditioner is the non-machine that is blocked, and when non-, is blocked machine when operation, carries out corresponding operation while being X0J by parameter X, when being blocked machine operation, non-ly be blocked temperature T 3 in the real-time sensing chamber of machine, if T3 is greater than threshold value T4, starts the non-machine that is blocked and move simultaneously;
If heat load distribution balance parameters X is X2J, two air conditioners are the machine of being blocked, and during one of them operation of air-conditioner, temperature T 5 in the real-time sensing chamber of another one air conditioner, if T5 is greater than threshold value T4, starts two air conditioners and move simultaneously.
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| CN104728997B (en) * | 2013-12-23 | 2017-09-22 | 珠海格力电器股份有限公司 | For thermostatically controlled air conditioner, thermostatic control system and constant-temperature control method |
| CN105048447B (en) * | 2014-04-24 | 2017-09-22 | 松下知识产权经营株式会社 | integration demand control method and integration demand control device |
| CN105045309B (en) * | 2015-06-03 | 2017-06-16 | 国家电网公司 | For double TEC air conditioning control methods of intelligent substation intelligence convergence control cabinet |
| CN104991583A (en) * | 2015-06-30 | 2015-10-21 | 许继电气股份有限公司 | Prefabricated cabin temperature control method, prefabricated cabin temperature control system and prefabricated cabin |
| CN108361919B (en) * | 2018-01-29 | 2020-04-24 | 上海科众恒盛云计算科技有限公司 | Dual-machine redundancy control system for precision air conditioner |
| CN113552912A (en) * | 2021-08-12 | 2021-10-26 | 上海泰礼实业有限公司 | Temperature adjusting method for thermal engineering laboratory |
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