CN105370959A - Method and device for adjusting nonlinearity degree of valve - Google Patents
Method and device for adjusting nonlinearity degree of valve Download PDFInfo
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- CN105370959A CN105370959A CN201510989188.1A CN201510989188A CN105370959A CN 105370959 A CN105370959 A CN 105370959A CN 201510989188 A CN201510989188 A CN 201510989188A CN 105370959 A CN105370959 A CN 105370959A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feedback Control In General (AREA)
Abstract
The invention discloses a device for adjusting the nonlinearity degree of a valve. The device is based on a PID (proportion integration differentiation) control system and comprises an opening degree signal acquiring unit, a first initial amount acquiring unit, a switching unit, a proportional-integral unit and a converting unit, wherein the opening degree signal acquiring unit is used for acquiring opening degree signals of the to-be-controlled valve; the first initial amount acquiring unit is used for acquiring the initial input amount of the PID control system; the switching unit is used for conducting corresponding channels according to the opening degree signals of the to-be-controlled valve; the proportional-integral unit is used for outputting an adjusting signal corresponding to the initial input amount in the corresponding channels under the trigger of the switching unit; the converting unit is used for converting the adjusting signal into a valve opening degree instruction of the PID control system; the proportional-integral unit at least comprises two proportional-integral modules, and at least two channels exist. Therefore, the device can correspondingly adjust control process instability caused by the nonlinearity degree of the valve according to the opening degree signals of the valve. Besides, the invention further discloses a method for adjusting the nonlinearity degree of the valve.
Description
Technical field
The present invention relates to technical field of electricity, particularly relate to a kind of method and the device that adjust valve nonlinearity.
Background technique
In some industrial production such as thermal power plant, the equipment controlling the sizes such as water, vapour, wind is called modulating valve, and this modulating valve is all generally the size by automatically controlling control media flow.But in working control, because the valve linearity is bad, for different valve openings, different automatic pid parameters is needed to control, therefore, if use same set of automatic pid parameter, the unstability in control procedure can be caused, control characteristic is poor, cannot meet the requirement of automatic control system.
As can be seen here, the adjustment how realizing valve nonlinearity is those skilled in the art's problem demanding prompt solutions to meet the requirement of automatic control system.
Summary of the invention
The object of this invention is to provide a kind of device adjusting valve nonlinearity, for realizing the adjustment of valve nonlinearity to meet the requirement of automatic control system.In addition, object of the present invention also provides a kind of method adjusting valve nonlinearity.
For solving the problems of the technologies described above, the invention provides a kind of device adjusting valve nonlinearity, based on PID control system, comprising:
Opening amount signal acquiring unit, for obtaining the opening amount signal of valve to be controlled;
First primary quantity acquiring unit, for obtaining the initial input amount of described PID control system;
Switching unit, for the passage corresponding according to the opening amount signal conducting of described valve to be controlled;
Pi element, under the triggering of described switching unit, exports adjustment signal corresponding to described initial input amount at the passage of correspondence;
Converting unit, for being converted to the valve opening instruction of described PID control system by described adjustment signal;
Wherein, described ratio subdivision at least comprises two kinds of proportional integral modules, and the quantity of described passage is at least two.
Preferably, described switching unit comprises:
First handover module, for meet at the opening amount signal of described valve to be controlled first pre-conditioned, conducting first passage;
Second handover module, for meet at the opening amount signal of described valve to be controlled second pre-conditioned, conducting second channel;
Wherein, described passage comprises first passage and second channel.
Preferably, described pi element comprises the first proportional integral module, the second proportional integral module and the 3rd proportional integral module;
Wherein, described first proportional integral module is used under the triggering of described first handover module, exports adjustment signal corresponding to described primary quantity at described first passage;
Described second proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel;
Or described 3rd proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel.
Preferably, the described first pre-conditioned valve opening scope corresponding for the opening amount signal of described valve to be controlled is 30%-60%.
Preferably, the valve opening that the described second pre-conditioned opening amount signal for described valve to be controlled is corresponding is less than 30% or be greater than 60%.
Preferably, when described valve opening is less than 30%, described second proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel;
When described valve opening is less than 60%, described 3rd proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel.
Preferably, also comprise instruction execution unit, for controlling described valve to be controlled according to described valve opening instruction.
Preferably, also comprising control unit, being in effective status for controlling described first proportional integral module, the second proportional integral module and the 3rd proportional integral module.
Preferably, the second primary quantity acquiring unit with described first primary quantity acquiring unit redundancy each other is also comprised;
Wherein, under normal circumstances, described first primary quantity acquiring unit work, when appearance is abnormal, during described first primary quantity acquiring unit fault, described second primary quantity acquiring unit is for obtaining the initial input amount of described PID control system.
Adjust a method for valve nonlinearity, based on PID control system, comprising:
Obtain the opening amount signal of valve to be controlled and the initial input amount of described PID control system;
The passage corresponding according to the opening amount signal conducting of described valve to be controlled;
Under the triggering of described switching unit, export adjustment signal corresponding to described initial input amount at the passage of correspondence;
Described adjustment signal is converted to the valve opening instruction of described PID control system.
The device of adjustment valve nonlinearity provided by the present invention, switching unit is according to different valve opening signals, the passage that conducting is corresponding and trigger percentage integral unit export adjustment signal corresponding to initial input amount at the passage of correspondence, because pi element at least comprises two kinds of proportional integral modules, the unstability of the control procedure that therefore can cause due to valve nonlinearity according to the corresponding adjustment of valve opening signal in the present invention.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention, simple introduction is done below by the accompanying drawing used required in embodiment, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural drawing adjusting the device of valve nonlinearity provided by the invention;
Fig. 2 is the structural drawing of the device of another kind adjustment valve nonlinearity provided by the invention;
Fig. 3 is the flow chart of the method for another kind adjustment valve nonlinearity provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making under creative work prerequisite, and the every other embodiment obtained, belongs to scope.
Core of the present invention is to provide a kind of method and the device that adjust valve nonlinearity.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment one
Fig. 1 is a kind of structural drawing adjusting the device of valve nonlinearity provided by the invention.As shown in Figure 1, the device of adjustment valve nonlinearity, based on PID control system, comprising:
Opening amount signal acquiring unit 10, for obtaining the opening amount signal of valve to be controlled;
First primary quantity acquiring unit 11, for obtaining the initial input amount of PID control system;
Switching unit 12, for the passage that the opening amount signal conducting according to valve to be controlled is corresponding;
Pi element 13, under the triggering of switching unit, exports adjustment signal corresponding to initial input amount at the passage of correspondence;
Converting unit 14, for being converted to the valve opening instruction of PID control system by adjustment signal;
Wherein, ratio subdivision at least comprises two kinds of proportional integral modules, and the quantity of passage is at least two.
In some industrial production such as thermal power plant, the equipment controlling the sizes such as water, vapour, wind is called modulating valve or valve, and this valve is all generally the size automatically controlling control media flow by PID control system.But, in concrete enforcement, because the valve linearity is bad, if use same set of automatic pid parameter, the unstability in control procedure can be caused.Therefore, in the present invention, the passage corresponding according to the different conducting of the aperture of valve, the quantity of passage has two at least here.Pi element at least comprises two kinds of proportional integral modules, initial input amount is exported different adjustment signals according to different valve openings.Switching unit can not only conductive channel, and can trigger percentage integral unit executable operations.Then the valve opening instruction that adjustment signal is converted to PID control system is carried out according to this instruction with control valve by converting unit.
As can be seen here, the device of the adjustment valve nonlinearity that the present embodiment provides, switching unit is according to different valve opening signals, the passage that conducting is corresponding and trigger percentage integral unit export adjustment signal corresponding to initial input amount at the passage of correspondence, because pi element at least comprises two kinds of proportional integral modules, the unstability of the control procedure that therefore can cause due to valve nonlinearity according to the corresponding adjustment of valve opening signal in the present invention.
Fig. 2 is the structural drawing of the device of another kind adjustment valve nonlinearity provided by the invention.As shown in Figure 2, on the basis of above-described embodiment, switching unit 12 comprises:
First handover module 120, for meet at the opening amount signal of valve to be controlled first pre-conditioned, conducting first passage;
Second handover module 121, for meet at the opening amount signal of valve to be controlled second pre-conditioned, conducting second channel;
Wherein, passage comprises first passage and second channel.
In concrete enforcement, switching unit can comprise two modules, and corresponding switching condition also has two, and namely first is pre-conditioned and second pre-conditioned.When the opening amount signal of valve to be controlled meets first pre-conditioned, then the first handover module conducting first passage; When the opening amount signal of valve to be controlled meets second pre-conditioned, then the second handover module conducting second channel.
Wherein, as shown in Figure 2, on the basis of above-described embodiment, pi element 13 comprises the first proportional integral module 130, second proportional integral module 131 and the 3rd proportional integral module 132;
Wherein, the first proportional integral module 130, under the triggering of the first handover module 120, exports adjustment signal corresponding to primary quantity at first passage;
Second proportional integral module 131, under the triggering of the second handover module 121, exports adjustment signal corresponding to primary quantity at second channel;
Or the 3rd proportional integral module 131 under the triggering of the second handover module 121, export adjustment signal corresponding to primary quantity at second channel.
Concrete implementation process is exactly, after switching unit receives the opening amount signal of valve to be controlled, if the opening amount signal of valve to be controlled meets first pre-conditioned, then the first handover module conducting first passage, first proportional integral module, under the triggering of the first handover module, exports adjustment signal corresponding to primary quantity at first passage.
If the opening amount signal of valve to be controlled meets second pre-conditioned, then the second handover module conducting second channel, the second proportional integral module, under the triggering of the second handover module, will export adjustment signal corresponding to primary quantity at second channel; Or the second handover module conducting second channel, the 3rd proportional integral module, under the triggering of the second handover module, exports adjustment signal corresponding to primary quantity at second channel.
Wherein, the first pre-conditioned valve opening scope corresponding for the opening amount signal of valve to be controlled is 30%-60%.
When the valve opening scope that the opening amount signal of valve to be controlled is corresponding is 30%-60%, then the first handover module conducting first passage, the first proportional integral module, under the triggering of the first handover module, exports adjustment signal corresponding to primary quantity at first passage.
Wherein, the valve opening that the second pre-conditioned opening amount signal for valve to be controlled is corresponding is less than 30% or be greater than 60%.
Preferably, when valve opening is less than 30%, the second proportional integral module 131, under the triggering of the second handover module 121, exports adjustment signal corresponding to primary quantity at second channel;
When valve opening is less than 60%, the 3rd proportional integral module 132, under the triggering of the second handover module 121, exports adjustment signal corresponding to primary quantity at second channel.
When valve opening scope corresponding to the opening amount signal of valve to be controlled is for being less than 30%, then the second handover module conducting second channel, the second proportional integral module, under the triggering of the second handover module, exports adjustment signal corresponding to primary quantity at second channel;
When valve opening scope corresponding to the opening amount signal of valve to be controlled is for being greater than 60%, then the second handover module conducting second channel, the 3rd proportional integral module, under the triggering of the second handover module, exports adjustment signal corresponding to primary quantity at second channel.
Wherein, as shown in Figure 2, instruction execution unit 15 is also comprised, for controlling valve to be controlled according to valve opening instruction.
After adjustment signal is converted to the valve opening instruction of PID control system by converting unit 14, instruction execution unit 15 just performs corresponding operation according to valve opening instruction, opens according to valve opening instruction with control valve.
Wherein, also comprise control unit 16, for controlling the first proportional integral module 130, second proportional integral module 131 and the 3rd proportional integral module 132 is in effective status.
In concrete enforcement, control unit is all connected with the first proportional integral module, the second proportional integral module and the 3rd proportional integral module.The effect of control unit is to the first proportional integral module, the second proportional integral module and the 3rd proportional integral module control signal, makes the first proportional integral module, the second proportional integral module and the 3rd proportional integral module be in effective status.
Wherein, as shown in Figure 2, the second primary quantity acquiring unit 17 with the first primary quantity acquiring unit 11 redundancy each other is also comprised;
Wherein, under normal circumstances, described first primary quantity acquiring unit work, when appearance is abnormal, during described first primary quantity acquiring unit fault, described second primary quantity acquiring unit is for obtaining the initial input amount of described PID control system.
First primary quantity acquiring unit and the second primary quantity acquiring unit redundancy each other, under normal circumstances, the first primary quantity acquiring unit is in normal working, and the second primary quantity acquiring unit is in standby condition; Once occur abnormal, during the first primary quantity acquiring unit fault, then the second primary quantity acquiring unit is converted to working state by standby condition, namely obtains the initial input amount of PID control system.
Embodiment two
Fig. 3 is the flow chart of the method for another kind adjustment valve nonlinearity provided by the invention.As shown in Figure 3, the method for adjustment valve nonlinearity, based on PID control system, comprising:
S10: obtain the opening amount signal of valve to be controlled and the initial input amount of PID control system;
S11: the passage corresponding according to the opening amount signal conducting of valve to be controlled;
S12: under the triggering of switching unit, exports adjustment signal corresponding to initial input amount at the passage of correspondence;
S13: valve opening instruction adjustment signal being converted to PID control system.
Due to the embodiment that embodiment two is method parts that the device implemented in embodiment one is corresponding, therefore concrete mode of execution refers to the description of embodiment one, and the present embodiment wouldn't repeat.
Above the method for adjustment valve nonlinearity provided by the present invention and device are described in detail.In specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Professional workforce can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technological scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Claims (10)
1. adjust a device for valve nonlinearity, based on PID control system, it is characterized in that, comprising:
Opening amount signal acquiring unit, for obtaining the opening amount signal of valve to be controlled;
First primary quantity acquiring unit, for obtaining the initial input amount of described PID control system;
Switching unit, for the passage corresponding according to the opening amount signal conducting of described valve to be controlled;
Pi element, under the triggering of described switching unit, exports adjustment signal corresponding to described initial input amount at the passage of correspondence;
Converting unit, for being converted to the valve opening instruction of described PID control system by described adjustment signal;
Wherein, described ratio subdivision at least comprises two kinds of proportional integral modules, and the quantity of described passage is at least two.
2. the device of adjustment valve nonlinearity according to claim 1, it is characterized in that, described switching unit comprises:
First handover module, for meet at the opening amount signal of described valve to be controlled first pre-conditioned, conducting first passage;
Second handover module, for meet at the opening amount signal of described valve to be controlled second pre-conditioned, conducting second channel;
Wherein, described passage comprises first passage and second channel.
3. the device of adjustment valve nonlinearity according to claim 2, is characterized in that, described pi element comprises the first proportional integral module, the second proportional integral module and the 3rd proportional integral module;
Wherein, described first proportional integral module is used under the triggering of described first handover module, exports adjustment signal corresponding to described primary quantity at described first passage;
Described second proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel;
Or described 3rd proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel.
4. the device of adjustment valve nonlinearity according to claim 3, is characterized in that, the described first pre-conditioned valve opening scope corresponding for the opening amount signal of described valve to be controlled is 30%-60%.
5. the device of adjustment valve nonlinearity according to claim 3, is characterized in that, the valve opening that the described second pre-conditioned opening amount signal for described valve to be controlled is corresponding is less than 30% or be greater than 60%.
6. the device of adjustment valve nonlinearity according to claim 5, it is characterized in that, when described valve opening is less than 30%, described second proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel;
When described valve opening is less than 60%, described 3rd proportional integral module is used under the triggering of described second handover module, exports adjustment signal corresponding to described primary quantity at described second channel.
7. the device of adjustment valve nonlinearity according to claim 1, is characterized in that, also comprise instruction execution unit, for controlling described valve to be controlled according to described valve opening instruction.
8. the device of adjustment valve nonlinearity according to claim 1, is characterized in that, also comprise control unit, is in effective status for controlling described first proportional integral module, the second proportional integral module and the 3rd proportional integral module.
9. the device of the adjustment valve nonlinearity according to claim 1 to 8 any one, is characterized in that, also comprises the second primary quantity acquiring unit with described first primary quantity acquiring unit redundancy each other;
Wherein, under normal circumstances, described first primary quantity acquiring unit work, when appearance is abnormal, during described first primary quantity acquiring unit fault, described second primary quantity acquiring unit is for obtaining the initial input amount of described PID control system.
10. adjust a method for valve nonlinearity, based on PID control system, it is characterized in that, comprising:
Obtain the opening amount signal of valve to be controlled and the initial input amount of described PID control system;
The passage corresponding according to the opening amount signal conducting of described valve to be controlled;
Under the triggering of described switching unit, export adjustment signal corresponding to described initial input amount at the passage of correspondence;
Described adjustment signal is converted to the valve opening instruction of described PID control system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510989188.1A CN105370959B (en) | 2015-12-24 | 2015-12-24 | A kind of method and device of adjustment valve nonlinearity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510989188.1A CN105370959B (en) | 2015-12-24 | 2015-12-24 | A kind of method and device of adjustment valve nonlinearity |
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| CN105370959A true CN105370959A (en) | 2016-03-02 |
| CN105370959B CN105370959B (en) | 2018-09-28 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1504662A (en) * | 2002-11-29 | 2004-06-16 | 旺宏电子股份有限公司 | Method for automatic controlling dish shaped control valve and cooling water system employing the same |
| CN101872159A (en) * | 2010-05-13 | 2010-10-27 | 珠海醋酸纤维有限公司 | Temperature and pressure reducer control system and control method thereof |
| CN202360852U (en) * | 2011-12-07 | 2012-08-01 | 北京七星华创电子股份有限公司 | High-temperature fluid detection system |
| CN202580178U (en) * | 2012-04-17 | 2012-12-05 | 常州汉腾自动化设备有限公司 | Intelligent pressure-difference regulating balance valve with LCD (liquid crystal display) |
| WO2013043631A2 (en) * | 2011-09-21 | 2013-03-28 | Accutrol, LLC | Electronic pressure independent controller for fluid flow control valve |
| CN103216659A (en) * | 2013-04-03 | 2013-07-24 | 浙江中易和节能技术有限公司 | Temperature adjusting device with valve self-adaptive function |
| CN103307342A (en) * | 2012-03-15 | 2013-09-18 | 冯经娟 | Method for determining a fluid flow rate with a fluid control valve |
| US20150057810A1 (en) * | 2013-08-20 | 2015-02-26 | FlowEnergy, L.L.C. | Building energy analysis and management system |
-
2015
- 2015-12-24 CN CN201510989188.1A patent/CN105370959B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1504662A (en) * | 2002-11-29 | 2004-06-16 | 旺宏电子股份有限公司 | Method for automatic controlling dish shaped control valve and cooling water system employing the same |
| CN101872159A (en) * | 2010-05-13 | 2010-10-27 | 珠海醋酸纤维有限公司 | Temperature and pressure reducer control system and control method thereof |
| WO2013043631A2 (en) * | 2011-09-21 | 2013-03-28 | Accutrol, LLC | Electronic pressure independent controller for fluid flow control valve |
| CN202360852U (en) * | 2011-12-07 | 2012-08-01 | 北京七星华创电子股份有限公司 | High-temperature fluid detection system |
| CN103307342A (en) * | 2012-03-15 | 2013-09-18 | 冯经娟 | Method for determining a fluid flow rate with a fluid control valve |
| CN202580178U (en) * | 2012-04-17 | 2012-12-05 | 常州汉腾自动化设备有限公司 | Intelligent pressure-difference regulating balance valve with LCD (liquid crystal display) |
| CN103216659A (en) * | 2013-04-03 | 2013-07-24 | 浙江中易和节能技术有限公司 | Temperature adjusting device with valve self-adaptive function |
| US20150057810A1 (en) * | 2013-08-20 | 2015-02-26 | FlowEnergy, L.L.C. | Building energy analysis and management system |
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