CN104296321B - Station house central air-conditioning control system and method - Google Patents
Station house central air-conditioning control system and method Download PDFInfo
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- CN104296321B CN104296321B CN201410549923.2A CN201410549923A CN104296321B CN 104296321 B CN104296321 B CN 104296321B CN 201410549923 A CN201410549923 A CN 201410549923A CN 104296321 B CN104296321 B CN 104296321B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
Abstract
The invention discloses a station house central air-conditioning control system and method. The system comprises a central air-conditioning monitoring workstation, a communication network, a fresh air monitoring system, an air delivery and exhaust monitoring system and an air-conditioning monitoring system. The fresh air monitoring system is used for achieving air delivery temperature and humidity automatic control, filter mesh blocking alarming, fresh air unit starting and stopping control and the like; the air delivery and exhaust monitoring system is used for achieving monitoring and control of the running status of an air exhaust unit and an air delivery unit; the air-conditioning monitoring system is used for achieving return air temperature and humidity automatic control, filter mesh blocking alarming, air quality adjustment, air-conditioning unit starting and stopping control and the like; the central air-conditioning monitoring workstation monitors, controls and manages the fresh air monitoring system, the air delivery and exhaust monitoring system and the air-conditioning monitoring system. According to the station house central air-conditioning control system, management centralization of a central air-conditioning control system can be achieved; a fresh air system, an air delivery and exhaust system and an air-conditioning system can be monitored in a visualized mode more efficiently and accurately; repeated construction of monitoring equipment can be avoided, and further effective energy conservation and power saving can be obtained.
Description
Technical field
The present invention relates to a kind of airconditioning control field, particularly to a kind of station buildings central air conditioning system and side
Method.
Background technology
Fast development with rail transportation system and the continuous improvement of people's living standard, either staff is still
Passenger, the requirement more and more higher to environment such as traffic, trip, work, rest, safety.In order to meet these demands of people, more
In order to improve the safety in production level of railway enterprise, and modern management level, realize energy-saving target, Along Railway weight
Want building, such as station, MTU depot（Institute）, all kinds of electromechanical equipments of office block etc., such as electric power, illumination, plumbing, HVAC sky
Tune, Escalator, EPS etc., should adopt advanced computer technology, control technology and the communication technology, they are monitored automatically,
Control and manage, to reach save energy, the purpose saved manpower, improve level of security and managerial skills.
At present, the energy resource consumption of central air conditioner system accounts for the 50% of whole building thing automated system BAS energy resource consumption,
Because ever-increasing energy requirements and limited available resources limit, this needs heating ventilation and air-conditioning technology is improved, and needs
Efficient control method is wanted to manage station buildings central air conditioning system.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, provide a kind of station buildings central air conditioning system and
Method, makes central air conditioning system manage centralization, more efficient visualizing monitor exactly controls VMC, supply and exhaust
System and air-conditioning system, it is to avoid the repeated construction of monitoring device, more efficiently energy saving.
The purpose of the present invention is achieved through the following technical solutions：A kind of station buildings central air conditioning system,
It includes central air-conditioner monitoring work station, communication network, fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner,
Fresh air monitoring system is used for realizing that wind pushing temperature automatically controls, blasting humidity automatically controls, screen pack blocking is reported to the police, new blower fan opens
Stop control, interlock protection controls and saving-energy operation control；Supply and exhaust monitoring system is used for realizing exhaust blower and pressure fan runs shape
The supervision of state and control, temporally program automatically open/stop exhaust blower and pressure fan, open/stop smoke exhaust fan by fire-fighting signal, by envelope
Enclosed building carbonomonoxide concentration within doors opens/stops exhaust blower and pressure fan；Monitoring air-conditioner is used for realizing return air temperature certainly
Dynamic control, the blocking warning of return air Humidity Automatic Control, screen pack, air quality regulation, air-conditioner set on off control, interlock protection
Control and saving-energy operation control；Central air-conditioner monitoring work station is to fresh air monitoring system, supply and exhaust monitoring system and air conditioning monitoring
System is monitored, controls, manages；Communication network is serial self-healing optical fiber ring network or ring-like self-healing EPA；Central hollow
Monitor workstation is adjusted to be connected with fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner by communication network.
Described fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner all include intelligent monitoring and controlling device.
Described intelligent monitoring and controlling device includes rack, switch, monitoring device or optical fiber pigtail box, switch, monitoring
Watch-dog and optical fiber pigtail box are arranged in rack, and monitoring device one end is connected with switch by twisted-pair feeder, monitoring
The device other end is connected with field apparatus by holding wire, and switch is also connected with optical fiber pigtail box by tail optical fiber, optical fiber pigtail box
The other end is connected with higher level's central air-conditioner monitoring work station by trunk cable.
Described monitoring device is direct digital controller DDC, and DDC controller is the IQ3 control with Ethernet interface
Device processed.
Described monitoring device includes remote signal module DI, telemetry module AI, remote control module DO and remote regulating modules A O, remote signalling
Module charge of overseeing electric switch, electrical equipment, the working condition of plant equipment and ruuning situation, DI is that digital remote signals are defeated
Enter, telemetry module is responsible for gathering voltage, electric current, power, pressure or the temperature parameter of electromechanical equipment, AI is that analog telemetering signal is defeated
Enter, remote control module is responsible for controlling the working condition of electrical equipment and electricapparatus equipment, DO is digital remote control signal output, distant
Mode transfer block is responsible for setting and adjusting running parameter and the canonical parameter of control device, and AO is simulation remote regulating signal output.
Described fresh air monitoring system includes Fresh air handling units, new wind intelligent supervising device and fresh air site monitor, fresh air
Site monitor is arranged on Fresh air handling units, and fresh air supervising device is connected with fresh air site monitor and Fresh air handling units.
Described fresh air site monitor at least includes PID controller, air-supply Temperature Humidity Sensor, frost prevention switch, pressure reduction
Switch, fan valve executor, electric control valve and electric steam humidification regulating valve, PID controller is according to fresh air, air return humiture
Carry out PID arithmetic result with humiture setting value, PID control is carried out to cold valves, hot water valve and humidifier regulating valve.
Described new wind intelligent supervising device includes fresh air remote signal module DI, fresh air telemetry module AI, fresh air remote control module
DO and fresh air remote regulating modules A O.
Pressure difference switch A, pressure difference switch B, frost prevention switch and electricity that described fresh air remote signal module DI is connected with Fresh air handling units
Control case connects, including fan operation state, fan switch state, fan trouble, blower fan tripping operation warning and screen pack Stateful Inspection
Control point.
Described fresh air remote regulating modules A O is connected with Fresh air handling units tie point electric control valve and electric steam humidification regulating valve
Connect, control control point including cold/hot water electronic valve regulation control and electric steam humidification valve regulation.
Air-valve driver that described fresh air remote control module DO is connected with Fresh air handling units and electric cabinet connect, including determining air quantity
Air-valve controls and fan switch controls control point.
Described supply and exhaust monitoring system includes supply and exhaust unit, supply and exhaust intelligent monitoring and controlling device and supply and exhaust on-site supervision
Device, supply and exhaust site monitor is arranged in supply and exhaust unit, supply and exhaust supervising device and supply and exhaust site monitor and the row of sending
Blower fan group connects.
Described supply and exhaust site monitor includes electric cabinet.
Described supply and exhaust intelligent monitoring and controlling device includes supply and exhaust remote signal module DI, supply and exhaust telemetry module AI, supply and exhaust
Remote control module DO and supply and exhaust remote regulating modules AO.
The pressure difference switch that described supply and exhaust remote signal module DI is connected with blowing and discharging fan and electric cabinet connect, including blower fan
Open/close state, manually automatically/selection and fan trouble alarm monitoring point.
The electric cabinet that described supply and exhaust remote control module DO is connected with blowing and discharging fan connects, and controls prison including blower fan ON/OFF
Control point.
Also include fire alarm system FAS linkage interface, when receiving FAS fire alarm information, and after confirming, preferential execute
Disaster prevention model, starts exhaust fan unit.
Described monitoring air-conditioner includes air-conditioner set, intelligent monitoring of air conditioning device and air-conditioning site monitor, air-conditioning
Site monitor is arranged on air-conditioner set, and air-conditioning site monitor is connected with air-conditioning site monitor and air-conditioner set.
Described air-conditioning site monitor at least includes PID controller, mixed wind-warm syndrome humidity sensor, air return humiture sensing
Device, frost prevention switch, pressure difference switch, pressure sensor, fan valve executor, electric control valve and electric control valve and electronic humidification regulating valve, PID control
Device carries out PID arithmetic result according to fresh air, air return humiture and humiture setting value, to cold valves, hot water valve and humidifier
Regulating valve carries out PID control.
Described intelligent monitoring of air conditioning device includes air-conditioning remote signal module DI, air-conditioning telemetry module AI, air conditioner remote module
DO and air-conditioning remote regulating modules AO.
Air-valve driver that described air-conditioning telemetry module AI is connected with air-conditioner set, electric control valve, electric steam add
Wet regulating valve and wet temperature sensor connect, including air return temperature and humidity measurement, fresh air temperature and humidity measurement, cold/hot water temperature survey,
Blasting humidity measurement and fresh air/return air determine air quantity air-valve measurement control point.
Pressure difference switch that described air-conditioning remote signal module DI is connected with air-conditioner set, frost prevention switch, electric steam humidification are adjusted
Section valve and electric cabinet connect, including fan operation state, fan switch state, fan trouble, blower fan tripping operation warning and screen pack
Stateful Inspection control point.
Air-valve driver, electric control valve and electric steam that described air-conditioning remote regulating modules AO are connected with air-conditioner set add
Wet regulating valve connects, and adjusts control, cold/hot water electronic valve regulation control and electric steam humidification valve regulation including determining air quantity air-valve
Control control point.
The electric cabinet that described air conditioner remote module DO is connected with air-conditioner set connects, and controls monitoring including fan switch
Point.
A kind of station buildings central air-conditioner control method, it includes fresh air control procedure, supply and exhaust rate-determining steps and air-conditioning
Rate-determining steps.
Described fresh air control procedure includes following one or more sub-step：
（1）Wind pushing temperature automatically controls：
During winter, according to temperature sensor actual measurement temperature value automatically PID arithmetic control is carried out to hot water valve aperture it is ensured that
New blower fan wind pushing temperature reaches the requirement of design temperature；
During summer, PID arithmetic control is automatically carried out to cold valves aperture according to the temperature value of temperature sensor actual measurement, passes through
The aperture of water adjusting valve, makes wind pushing temperature reach the setting value of user；
（2）Blasting humidity controls：Measured value according to humidity sensor carries out PID arithmetic control to humidifier valve automatically, protects
Card blasting humidity reaches the humidity set point of user；
（3）Screen pack blocking is reported to the police：The excessive alarm of air cleaner two ends pressure reduction, and in graphic operation station display and
Print and report to the police, and point out time of fire alarming；
（4）New blower fan on off control：According to the operating schedule being previously set and holiday break schedule, timing start and stop
New blower fan, programming count new blower fan run time, point out timing to carry out maintaining to new blower fan；
（5）Interlock protection controls：
After blower fan stops, fresh air air door, electric control valve, magnetic valve are automatically switched off；
After blower fan starts, fault alarm when pressure reduction is too low before and after it, and Concatenate shut-down；
When the temperature is too low, carry out anti-frost protection, open hot water valve, close air door, blowing-out machine.
Described supply and exhaust rate-determining steps include following one or more sub-step：
（1）Temporally program opens/stops pressure fan automatically, has the real-time time control function of any period；
（2）The running status of monitoring blowing and discharging fan and fault-signal, and accumulated running time；
（3）Smoke exhaust fan is chain with fire-fighting signal, after fire signal confirms, by opened smoke-discharging blower fan；
（4）Carbon monoxide CO concentration sensor is set in closed building, is opened by monitoring carbon monoxide CO concentration
Stop sending/exhaust blower, and accordingly open new air door, can reach effective energy-conservation and ensure air quality；
（5）Central station Computer Graphics Display, record various parameters, including state, the start-stop time, accumulated running time and its
Historical data etc..
Described air-conditioning control steps include following one or more sub-step：
（1）Return air temperature automatically controls：During winter, the air return temperature value according to return air temperature sensor actual measurement is automatically to heat
Water valve aperture carries out PID arithmetic control it is ensured that air-conditioner set air return temperature reaches the requirement of design temperature；
During summer, PID arithmetic is automatically carried out to cold valves aperture according to the air return temperature value of return air temperature sensor actual measurement
Control, by adjusting the aperture of cold valves, make return air temperature reach the setting value of user；
In transition season, then enthalpy, and the enthalpy with indoor return air are automatically calculated according to the humiture of outdoor feeding fresh air
Value carries out PID arithmetic, and its result will automatically control the aperture of new air-valve, air returning valve, exhaust valve, automatically adjusts mixed wind ratio to reach
Effect；
（2）Return air humid control：Measured value according to return air humidity sensor carries out PID arithmetic control to humidifier valve automatically
System is it is ensured that return air humidity reaches the humidity set point of user；
（3）Screen pack blocking is reported to the police：The excessive alarm of air cleaner two ends pressure reduction, and in graphic operation station display and
Print and report to the police, and point out time of fire alarming；
（4）Air quality is adjusted：Carbon dioxide measurement point is set in important place, is automatically adjusted according to the concentration of measured value
New wind ratio；
（5）Air-conditioner set on off control：According to the operating schedule being previously set and holiday break schedule, regularly open
Stop air-conditioner set, the run time of programming count air-conditioner set, point out timing to carry out maintaining to air-conditioner set；
（6）Interlock protection controls：
After blower fan stops, newly time air draft air door, electric control valve, magnetic valve are automatically switched off；
After blower fan starts, fault alarm when pressure reduction is too low before and after it, and Concatenate shut-down；
When the temperature is too low, carry out anti-frost protection, open hot water valve, close new air door, blowing-out machine, and in graphic operation station
Upper display alarm.
It also includes energy-saving run step, and energy-saving run step includes following one or more sub-step：
（1）Intermittent duty：Make equipment reasonable interval start and stop, but do not affect amenity degree；
（2）Optimum start-up：According to building librarian use situation, open air-conditioning equipment in advance, after night, do not start sky
Tune equipment；
（3）Optimal shutdown：According to building personnel upper and lower class situation, open in advance or stop air-conditioning equipment；
（4）Adjustment setting value：According to outside air temperature, setting value is adjusted, reduces air-conditioning equipment energy ezpenditure；
（5）Night wind：In nice and cool season, it is full of building with night fresh air, to save air conditioner energy.
The invention has the beneficial effects as follows：A kind of station buildings central air conditioning system and method, make central air-conditioning control
System administration centralization, more efficient monitor controls VMC, air supplying and exhausting system and air-conditioning system, it is to avoid monitoring sets
Standby repeated construction, more efficiently energy saving.
Station buildings central air conditioning system completes following function：
（1）Each supervising device energy concentrated collection field data, and send data to central air-conditioner monitoring main website；
（2）Supervising device accepts the control command of upper central air-conditioner monitoring main website, is distributed to corresponding field controller and holds
Row control task；
（3）Human-machine interface function is provided, is easy to operator on duty, tour personnel executes supervision, control task in locality, for dimension
Shield personnel provide interactive service；
（4）Data-interface with fire alarm system FAS is provided, is effectively reduced fire damage.
Brief description
Fig. 1 is the system principle structure chart of the present invention；
Fig. 2 is the intelligent monitoring device cabinet structure chart of the present invention；
Fig. 3 is the fresh air monitoring system principle assumption diagram of the present invention；
Fig. 4 is the supply and exhaust monitoring system principle assumption diagram of the present invention；
Fig. 5 is the air-conditioner monitoring principle assumption diagram of the present invention；
Fig. 6 is the PID controller theory diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings technical scheme is described in further detail, but protection scope of the present invention is not limited to
Described below.
As shown in figure 1, a kind of station buildings central air conditioning system, it includes central air-conditioner monitoring work station, communication
Network, fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner, fresh air monitoring system is used for realizing wind pushing temperature certainly
Dynamic control, blasting humidity automatically control, screen pack blocks warning, new blower fan on off control, interlock protection control and energy-saving run
Control；, for realizing supervision and the control of exhaust blower and exhaust blower fan running status, temporally program is automatic for supply and exhaust monitoring system
Open/stop exhaust blower and pressure fan, open/stop smoke exhaust fan by fire-fighting signal, open by the carbonomonoxide concentration in closed building/
Stop exhaust blower and pressure fan；Monitoring air-conditioner be used for realizing return air temperature automatically control, return air Humidity Automatic Control, screen pack
Blocking warning, air quality regulation, air-conditioner set on off control, interlock protection control and saving-energy operation control；Central air-conditioning is supervised
Control work station is monitored, controls, manages to fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner；Communication network
Network is serial self-healing optical fiber ring network or ring-like self-healing EPA；Central air-conditioner monitoring work station passes through communication network and fresh air
Monitoring system, supply and exhaust monitoring system and monitoring air-conditioner connect.
Described fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner all include intelligent monitoring and controlling device.
As shown in Fig. 2 described intelligent monitoring and controlling device includes rack, switch, monitoring device or optical fiber pigtail box, hand over
Change planes, monitoring device and optical fiber pigtail box are arranged in rack, monitoring device one end is connected with switch by twisted-pair feeder,
The monitoring device other end is connected with field apparatus by holding wire, and switch is also connected with optical fiber pigtail box by tail optical fiber, light
The fine tail optical fiber box other end is connected with higher level's central air-conditioner monitoring work station by trunk cable.
Described monitoring device is direct digital controller DDC, and DDC controller is the IQ3 control with Ethernet interface
Device processed.
Described monitoring device includes remote signal module DI, telemetry module AI, remote control module DO and remote regulating modules A O, remote signalling
Module charge of overseeing electric switch, electrical equipment, the working condition of plant equipment and ruuning situation, DI is that digital remote signals are defeated
Enter, telemetry module is responsible for gathering voltage, electric current, power, pressure or the temperature parameter of electromechanical equipment, AI is that analog telemetering signal is defeated
Enter, remote control module is responsible for controlling the working condition of electrical equipment and electricapparatus equipment, DO is digital remote control signal output, distant
Mode transfer block is responsible for setting and adjusting running parameter and the canonical parameter of control device, and AO is simulation remote regulating signal output.
As shown in figure 3, described fresh air monitoring system includes Fresh air handling units, new wind intelligent supervising device and fresh air scene prison
Control device, fresh air site monitor is arranged on Fresh air handling units, and fresh air supervising device is connected with fresh air site monitor and Fresh air handling units
Connect.
Described fresh air site monitor at least includes PID controller, air-supply Temperature Humidity Sensor, frost prevention switch, pressure reduction
Switch, fan valve executor, electric control valve and electric steam humidification regulating valve, PID controller is according to fresh air, air return humiture
Carry out PID arithmetic result with humiture setting value, PID control is carried out to cold valves, hot water valve and humidifier regulating valve.
Described new wind intelligent supervising device includes fresh air remote signal module DI, fresh air telemetry module AI, fresh air remote control module
DO and fresh air remote regulating modules A O.
Pressure difference switch A, pressure difference switch B, frost prevention switch and electricity that described fresh air remote signal module DI is connected with Fresh air handling units
Control case connects, including fan operation state, fan switch state, fan trouble, blower fan tripping operation warning and screen pack Stateful Inspection
Control point.
Described fresh air remote regulating modules A O is connected with Fresh air handling units tie point electric control valve and electric steam humidification regulating valve
Connect, control control point including cold/hot water electronic valve regulation control and electric steam humidification valve regulation.
Air-valve driver that described fresh air remote control module DO is connected with Fresh air handling units and electric cabinet connect, including determining air quantity
Air-valve controls and fan switch controls control point.
As shown in figure 4, described supply and exhaust monitoring system includes supply and exhaust unit, supply and exhaust intelligent monitoring and controlling device and the row of sending
Wind site monitor, supply and exhaust site monitor is arranged in supply and exhaust unit, and supply and exhaust supervising device is supervised with supply and exhaust scene
Control device and supply and exhaust unit connect.
Described supply and exhaust site monitor includes electric cabinet.
Described supply and exhaust intelligent monitoring and controlling device includes supply and exhaust remote signal module DI, supply and exhaust telemetry module AI, supply and exhaust
Remote control module DO and supply and exhaust remote regulating modules AO.
The pressure difference switch that described supply and exhaust remote signal module DI is connected with blowing and discharging fan and electric cabinet connect, including blower fan
Open/close state, manually automatically/selection and fan trouble alarm monitoring point.
The electric cabinet that described supply and exhaust remote control module DO is connected with blowing and discharging fan connects, and controls prison including blower fan ON/OFF
Control point.
Also include fire alarm system FAS linkage interface, when receiving FAS fire alarm information, and after confirming, preferential execute
Disaster prevention model, starts exhaust fan unit.
As shown in figure 5, described monitoring air-conditioner includes air-conditioner set, intelligent monitoring of air conditioning device and air-conditioning scene prison
Control device, air-conditioning site monitor is arranged on air-conditioner set, and air-conditioning site monitor is connected with air-conditioning site monitor and air-conditioner set
Connect.
Described air-conditioning site monitor at least includes PID controller, mixed wind-warm syndrome humidity sensor, air return humiture sensing
Device, frost prevention switch, pressure difference switch, pressure sensor, fan valve executor, electric control valve and electric control valve and electronic humidification regulating valve, PID control
Device carries out PID arithmetic result according to fresh air, air return humiture and humiture setting value, to cold valves, hot water valve and humidifier
Regulating valve carries out PID control.
Described intelligent monitoring of air conditioning device includes air-conditioning remote signal module DI, air-conditioning telemetry module AI, air conditioner remote module
DO and air-conditioning remote regulating modules AO.
Air-valve driver that described air-conditioning telemetry module AI is connected with air-conditioner set, electric control valve, electric steam add
Wet regulating valve and wet temperature sensor connect, including air return temperature and humidity measurement, fresh air temperature and humidity measurement, cold/hot water temperature survey,
Blasting humidity measurement and fresh air/return air determine air quantity air-valve measurement control point.
Pressure difference switch that described air-conditioning remote signal module DI is connected with air-conditioner set, frost prevention switch, electric steam humidification are adjusted
Section valve and electric cabinet connect, including fan operation state, fan switch state, fan trouble, blower fan tripping operation warning and screen pack
Stateful Inspection control point.
Air-valve driver, electric control valve and electric steam that described air-conditioning remote regulating modules AO are connected with air-conditioner set add
Wet regulating valve connects, and adjusts control, cold/hot water electronic valve regulation control and electric steam humidification valve regulation including determining air quantity air-valve
Control control point.
The electric cabinet that described air conditioner remote module DO is connected with air-conditioner set connects, and controls monitoring including fan switch
Point.
As shown in fig. 6, PID controller（Proportion Integration Differentiation. proportional, integral-
Derivative controller）, it is made up of proportional unit P, integral unit I and differentiation element D.By Kp, the setting of tri- parameters of Ki and Kd.
PID controller is primarily adapted for use in substantially linear and dynamic characteristic time invariant system.
PID controller carries out PID arithmetic result according to fresh air, air return humiture and humiture setting value, to cold valves,
Hot water valve and humidifier regulating valve carry out PID control.
PID controller is a common backfeed loop part in Industry Control Application.This controller handle is collected
Data and a reference value be compared, then this difference be used for calculate new input value, this new input value
Purpose is to allow the data of system reach or be maintained at reference value.Different with other simple control computings, PID controller
Input value can be adjusted according to the occurrence rate of historical data and difference, system so can be made more accurate, more stable.Can
To be proved by the method for mathematics, other control methods lead to system have steady state error or process repeatedly in the case of, one
PID feedback loop but can keep stablizing of system.
A kind of station buildings central air-conditioner control method, it includes fresh air control procedure, supply and exhaust rate-determining steps and air-conditioning
Rate-determining steps.
Described fresh air control procedure includes following one or more sub-step：
（1）Wind pushing temperature automatically controls：
During winter, according to temperature sensor actual measurement temperature value automatically PID arithmetic control is carried out to hot water valve aperture it is ensured that
New blower fan wind pushing temperature reaches the requirement of design temperature；
During summer, PID arithmetic control is automatically carried out to cold valves aperture according to the temperature value of temperature sensor actual measurement, passes through
The aperture of water adjusting valve, makes wind pushing temperature reach the setting value of user；
（2）Blasting humidity controls：Measured value according to humidity sensor carries out PID arithmetic control to humidifier valve automatically, protects
Card blasting humidity reaches the humidity set point of user；
（3）Screen pack blocking is reported to the police：The excessive alarm of air cleaner two ends pressure reduction, and in graphic operation station display and
Print and report to the police, and point out time of fire alarming；
（4）New blower fan on off control：According to the operating schedule being previously set and holiday break schedule, timing start and stop
New blower fan, programming count new blower fan run time, point out timing to carry out maintaining to new blower fan；
（5）Interlock protection controls：
After blower fan stops, fresh air air door, electric control valve, magnetic valve are automatically switched off；
After blower fan starts, fault alarm when pressure reduction is too low before and after it, and Concatenate shut-down；
When the temperature is too low, carry out anti-frost protection, open hot water valve, close air door, blowing-out machine.
Described supply and exhaust rate-determining steps include following one or more sub-step：
（1）Temporally program opens/stops pressure fan automatically, has the real-time time control function of any period；
（2）The running status of monitoring blowing and discharging fan and fault-signal, and accumulated running time；
（3）Smoke exhaust fan is chain with fire-fighting signal, after fire signal confirms, by opened smoke-discharging blower fan；
（4）Carbon monoxide CO concentration sensor is set in closed building, is opened by monitoring carbon monoxide CO concentration
Stop sending/exhaust blower, and accordingly open new air door, can reach effective energy-conservation and ensure air quality；
（5）Central station Computer Graphics Display, record various parameters, including state, the start-stop time, accumulated running time and its
Historical data etc..
Described air-conditioning control steps include following one or more sub-step：
（1）Return air temperature automatically controls：During winter, the air return temperature value according to return air temperature sensor actual measurement is automatically to heat
Water valve aperture carries out PID arithmetic control it is ensured that air-conditioner set air return temperature reaches the requirement of design temperature；
During summer, PID arithmetic is automatically carried out to cold valves aperture according to the air return temperature value of return air temperature sensor actual measurement
Control, by adjusting the aperture of cold valves, make return air temperature reach the setting value of user；
In transition season, then enthalpy, and the enthalpy with indoor return air are automatically calculated according to the humiture of outdoor feeding fresh air
Value carries out PID arithmetic, and its result will automatically control the aperture of new air-valve, air returning valve, exhaust valve, automatically adjusts mixed wind ratio to reach
Effect；
（2）Return air humid control：Measured value according to return air humidity sensor carries out PID arithmetic control to humidifier valve automatically
System is it is ensured that return air humidity reaches the humidity set point of user；
（3）Screen pack blocking is reported to the police：The excessive alarm of air cleaner two ends pressure reduction, and in graphic operation station display and
Print and report to the police, and point out time of fire alarming；
（4）Air quality is adjusted：Carbon dioxide measurement point is set in important place, is automatically adjusted according to the concentration of measured value
New wind ratio；
（5）Air-conditioner set on off control：According to the operating schedule being previously set and holiday break schedule, regularly open
Stop air-conditioner set, the run time of programming count air-conditioner set, point out timing to carry out maintaining to air-conditioner set；
（6）Interlock protection controls：
After blower fan stops, newly time air draft air door, electric control valve, magnetic valve are automatically switched off；
After blower fan starts, fault alarm when pressure reduction is too low before and after it, and Concatenate shut-down；
When the temperature is too low, carry out anti-frost protection, open hot water valve, close new air door, blowing-out machine, and in graphic operation station
Upper display alarm.
It also includes energy-saving run step, and energy-saving run step includes following one or more sub-step：
（1）Intermittent duty：Make equipment reasonable interval start and stop, but do not affect amenity degree；
（2）Optimum start-up：According to building librarian use situation, open air-conditioning equipment in advance, after night, do not start sky
Tune equipment；
（3）Optimal shutdown：According to building personnel upper and lower class situation, open in advance or stop air-conditioning equipment；
（4）Adjustment setting value：According to outside air temperature, setting value is adjusted, reduces air-conditioning equipment energy ezpenditure；
（5）Night wind：In nice and cool season, it is full of building with night fresh air, to save air conditioner energy.
Claims (8)
1. a kind of station buildings central air conditioning system it is characterised in that：It includes central air-conditioner monitoring work station, communication network
Network, fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner, fresh air monitoring system is used for realizing wind pushing temperature automatic
Control, blasting humidity automatically controls, screen pack blocks warning, new blower fan on off control, interlock protection control and energy-saving run control
System；Supply and exhaust monitoring system is used for realizing supervision and the control of exhaust blower and exhaust blower fan running status, temporally program automatically open/
Stop exhaust blower and pressure fan, open/stop smoke exhaust fan by fire-fighting signal, opened/stopped by the carbonomonoxide concentration in closed building
Exhaust blower and pressure fan；Monitoring air-conditioner is used for realizing that return air temperature automatically controls, return air Humidity Automatic Control, screen pack block up
Plug warning, air quality regulation, air-conditioner set on off control, interlock protection control and saving-energy operation control；Central air-conditioner monitoring
Work station is monitored, controls, manages to fresh air monitoring system, supply and exhaust monitoring system and monitoring air-conditioner；Communication network
For serial self-healing optical fiber ring network or ring-like self-healing EPA；Central air-conditioner monitoring work station is passed through communication network and is supervised with fresh air
Control system, supply and exhaust monitoring system and monitoring air-conditioner connect；
Described monitoring air-conditioner includes air-conditioner set, intelligent monitoring of air conditioning device and air-conditioning site monitor, air-conditioning scene
Watch-dog is arranged on air-conditioner set, and air-conditioning site monitor is connected with air-conditioning site monitor and air-conditioner set；
Described air-conditioning site monitor at least include PID controller, mixed wind-warm syndrome humidity sensor, air return temperature humidity sensor,
Frost prevention switch, pressure difference switch, pressure sensor, fan valve executor, electric control valve and electric control valve and electronic humidification regulating valve, PID controller
Carry out PID arithmetic result according to fresh air, air return humiture and humiture setting value, cold valves, hot water valve and humidifier are adjusted
Section valve carries out PID control；
Described intelligent monitoring of air conditioning device include air-conditioning remote signal module DI, air-conditioning telemetry module AI, air conditioner remote module DO and
Air-conditioning remote regulating modules AO；
Air-valve driver that described air-conditioning telemetry module AI is connected with air-conditioner set, electric control valve, electric steam humidification are adjusted
Section valve and wet temperature sensor connect, including air return temperature and humidity measurement, fresh air temperature and humidity measurement, cold/hot water temperature survey, air-supply
Moisture measurement and fresh air/return air determine air quantity air-valve measurement control point；
Pressure difference switch that described air-conditioning remote signal module DI is connected with air-conditioner set, frost prevention switch, electric steam humidification regulating valve
Connect with electric cabinet, including fan operation state, fan switch state, fan trouble, blower fan tripping operation warning and filtration net state
Surveillance monitor point；
Air-valve driver, electric control valve and electric steam humidification that described air-conditioning remote regulating modules AO are connected with air-conditioner set are adjusted
Section valve connects, and including determining, the regulation of air quantity air-valve controls, cold/hot water electronic valve regulation control and electric steam humidification valve regulation control
Control point；
The electric cabinet that described air conditioner remote module DO is connected with air-conditioner set connects, including fan switch control monitoring point.
2. a kind of station buildings central air conditioning system according to claim 1 it is characterised in that：Described fresh air prison
Control system, supply and exhaust monitoring system and monitoring air-conditioner all include intelligent monitoring and controlling device；
Described intelligent monitoring and controlling device includes rack, switch, monitoring device or optical fiber pigtail box, switch, monitoring
Device and optical fiber pigtail box are arranged in rack, and monitoring device one end is connected with switch by twisted-pair feeder, and monitoring device is another
One end is connected with field apparatus by holding wire, and switch is also connected with optical fiber pigtail box by tail optical fiber, and optical fiber pigtail box is another
End is connected with higher level's central air-conditioner monitoring work station by trunk cable；
Described monitoring device is direct digital controller DDC, and DDC controller is the IQ3 controller with Ethernet interface；
Described monitoring device includes remote signal module DI, telemetry module AI, remote control module DO and remote regulating modules A O, remote signal module
Charge of overseeing electric switch, electrical equipment, the working condition of plant equipment and ruuning situation, DI is digital remote signals input,
Telemetry module is responsible for gathering voltage, electric current, power, pressure or the temperature parameter of electromechanical equipment, and AI is analog telemetering signal input,
Remote control module is responsible for controlling the working condition of electrical equipment and electricapparatus equipment, and DO is digital remote control signal output, remote regulating
Module is responsible for setting and adjusting running parameter and the canonical parameter of control device, and AO is simulation remote regulating signal output.
3. a kind of station buildings central air conditioning system according to claim 1 it is characterised in that：Described fresh air prison
Control system includes Fresh air handling units, new wind intelligent supervising device and fresh air site monitor, and fresh air site monitor is arranged on fresh air
On unit, fresh air supervising device is connected with fresh air site monitor and Fresh air handling units；
Described fresh air site monitor at least include PID controller, air-supply Temperature Humidity Sensor, frost prevention switch, pressure difference switch,
Fan valve executor, electric control valve and electric steam humidification regulating valve, PID controller is according to fresh air, air return humiture and temperature
Humidity set point carries out PID arithmetic result, carries out PID control to cold valves, hot water valve and humidifier regulating valve；
Described new wind intelligent supervising device include fresh air remote signal module DI, fresh air telemetry module AI, fresh air remote control module DO and
Fresh air remote regulating modules A O；
Pressure difference switch A, pressure difference switch B, frost prevention switch and electric cabinet that described fresh air remote signal module DI is connected with Fresh air handling units
Connect, including the monitoring of fan operation state, fan switch state, fan trouble, blower fan tripping operation warning and screen pack Stateful Inspection
Point；
Described fresh air remote regulating modules A O is connected with Fresh air handling units tie point electric control valve and electric steam humidification regulating valve, bag
Include cold/hot water electronic valve regulation control and electric steam humidification valve regulation controls control point；
Air-valve driver that described fresh air remote control module DO is connected with Fresh air handling units and electric cabinet connect, including determining air quantity air-valve
Control and fan switch controls control point.
4. a kind of station buildings central air conditioning system according to claim 1 it is characterised in that：Described supply and exhaust
Monitoring system includes supply and exhaust unit, supply and exhaust intelligent monitoring and controlling device and supply and exhaust site monitor, supply and exhaust site monitor
It is arranged in supply and exhaust unit, supply and exhaust supervising device is connected with supply and exhaust site monitor and supply and exhaust unit；
Described supply and exhaust site monitor includes electric cabinet；
Described supply and exhaust intelligent monitoring and controlling device includes supply and exhaust remote signal module DI, supply and exhaust telemetry module AI, supply and exhaust remote control
Module DO and supply and exhaust remote regulating modules AO；
The pressure difference switch that described supply and exhaust remote signal module DI is connected with blowing and discharging fan and electric cabinet connect, including blower fan ON/OFF
State, manually automatically/selection and fan trouble alarm monitoring point；
The electric cabinet that described supply and exhaust remote control module DO is connected with blowing and discharging fan connects, and controls control point including blower fan ON/OFF；
Also include fire alarm system FAS linkage interface, when receiving FAS fire alarm information, and after confirming, preferential execution is taken precautions against natural calamities
Pattern, starts exhaust fan unit.
5. the central air-conditioning controlling party of the station buildings central air conditioning system according to any one in claim 1-4
Method it is characterised in that：It includes fresh air control procedure, supply and exhaust rate-determining steps and air-conditioning control steps；Described airconditioning control
Step includes following one or more sub-step：
（1）Return air temperature automatically controls：During winter, the air return temperature value according to return air temperature sensor actual measurement is automatically to hot water valve
Aperture carries out PID arithmetic control it is ensured that air-conditioner set air return temperature reaches the requirement of design temperature；
During summer, PID arithmetic control is automatically carried out to cold valves aperture according to the air return temperature value of return air temperature sensor actual measurement,
By adjusting the aperture of cold valves, return air temperature is made to reach the setting value of user；
In transition season, then enthalpy is automatically calculated according to the humiture of outdoor feeding fresh air, and enter with the enthalpy of indoor return air
Row PID arithmetic, its result will automatically control the aperture of new air-valve, air returning valve, exhaust valve, to reach the work automatically adjusting mixed wind ratio
With；
（2）Return air humid control：Measured value according to return air humidity sensor carries out PID arithmetic control to humidifier valve automatically, protects
Card return air humidity reaches the humidity set point of user；
（3）Screen pack blocking is reported to the police：The excessive alarm of air cleaner two ends pressure reduction, and show in graphic operation station and print
Report to the police, and point out time of fire alarming；
（4）Air quality is adjusted：Carbon dioxide measurement point is set in important place, fresh air is automatically adjusted according to the concentration of measured value
Than；
（5）Air-conditioner set on off control：According to the operating schedule being previously set and holiday break schedule, timing start and stop are empty
Adjust unit, the run time of programming count air-conditioner set, point out timing to carry out maintaining to air-conditioner set；
（6）Interlock protection controls：
After blower fan stops, newly time air draft air door, electric control valve, magnetic valve are automatically switched off；
After blower fan starts, fault alarm when pressure reduction is too low before and after it, and Concatenate shut-down；
When the temperature is too low, carry out anti-frost protection, open hot water valve, close new air door, blowing-out machine, and show in graphic operation station
Show warning.
6. a kind of station buildings central air-conditioner control method according to claim 5 it is characterised in that：Described new air control
Step processed includes following one or more sub-step：
（1）Wind pushing temperature automatically controls：
During winter, PID arithmetic control is automatically carried out to hot water valve aperture it is ensured that fresh air according to the temperature value of temperature sensor actual measurement
Machine wind pushing temperature reaches the requirement of design temperature；
During summer, PID arithmetic control is automatically carried out to cold valves aperture according to the temperature value of temperature sensor actual measurement, by adjusting
The aperture of water valve, makes wind pushing temperature reach the setting value of user；
（2）Blasting humidity controls：Measured value according to humidity sensor carries out PID arithmetic control it is ensured that sending to humidifier valve automatically
Rheumatism degree reaches the humidity set point of user；
（3）Screen pack blocking is reported to the police：The excessive alarm of air cleaner two ends pressure reduction, and show in graphic operation station and print
Report to the police, and point out time of fire alarming；
（4）New blower fan on off control：According to the operating schedule being previously set and holiday break schedule, timing start and stop fresh air
Machine, programming count new blower fan run time, point out timing to carry out maintaining to new blower fan；
（5）Interlock protection controls：
After blower fan stops, fresh air air door, electric control valve, magnetic valve are automatically switched off；
After blower fan starts, fault alarm when pressure reduction is too low before and after it, and Concatenate shut-down；
When the temperature is too low, carry out anti-frost protection, open hot water valve, close air door, blowing-out machine.
7. a kind of station buildings central air-conditioner control method according to claim 5 it is characterised in that：Described supply and exhaust
Rate-determining steps include following one or more sub-step：
（1）Temporally program opens/stops pressure fan automatically, has the real-time time control function of any period；
（2）The running status of monitoring blowing and discharging fan and fault-signal, and accumulated running time；
（3）Smoke exhaust fan is chain with fire-fighting signal, after fire signal confirms, by opened smoke-discharging blower fan；
（4）Carbon monoxide CO concentration sensor is set in closed building, given by monitoring carbon monoxide CO concentration start and stop/
Exhaust blower, and accordingly open new air door, can reach effective energy-conservation and ensure air quality；
（5）Central station Computer Graphics Display, records various parameters, including state, start-stop time, accumulated running time and its history
Data.
8. a kind of station buildings central air-conditioner control method according to claim 5 it is characterised in that：It also includes energy-conservation
Operating procedure, energy-saving run step includes following one or more sub-step：
（1）Intermittent duty：Make equipment reasonable interval start and stop, but do not affect amenity degree；
（2）Optimum start-up：According to building librarian use situation, open air-conditioning equipment in advance, after night, do not start air-conditioning and set
Standby；
（3）Optimal shutdown：According to building personnel upper and lower class situation, open in advance or stop air-conditioning equipment；
（4）Adjustment setting value：According to outside air temperature, setting value is adjusted, reduces air-conditioning equipment energy ezpenditure；
（5）Night wind：In nice and cool season, it is full of building with night fresh air, to save air conditioner energy.
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