CN108268019A - Building automatic control system based on P-BUS buses - Google Patents

Abstract

The invention discloses the building automatic control systems based on P BUS buses, are related to building automation techniques field.The present invention includes BA servers, BA work stations, the system integration to connection module, interchanger, BA Logical HEAs, BA logic controllers, BA control logics host, DDC controllers, sensor, switching value acquisition module, execution module；DDC controllers are connected by RS458 buses or P BUS buses with BA Logical HEAs；DDC controllers are connected by ICP/IP protocol and interchanger.The present invention causes the device to periodically, predictably obtain the right to use at network by using P BUS communications protocol, the certainty operation for realizing equipment, the high-speed communication for realizing data, the lasting management for realizing network；System function and control modification it is convenient, flexible, do not need to live rewiring, it is energy saving, improve efficiency, reduce human cost and supervision it is not in place caused by energy waste.

Description

Building automatic control system based on P-BUS buses

Technical field

The invention belongs to building automation techniques field, more particularly to a kind of building automatic based on P-BUS buses Control system.

Background technology

With the development of China's industrialization and urbanization, the public building in city is more and more, is used in building management The new and high technologies such as digitlization, networking, intelligence are fashion trend in the world and adapt to advanced information society to building The requirement of the function of object, environment and efficiency management.BAS utilize computer and network technologies, equipment is managed concentratedly and from Dynamic monitoring, to saving operation manpower, keeping equipment that normally there is great meaning.It is each by the timely start and stop of computer system simultaneously Related equipment avoids the unnecessary operation of equipment, and can save system operation energy consumption.

At present, building scale increase, standard improve, type, the quantity of equipment sharply increase, it is desirable that monitoring and controlling Point can up to thousands of points to points up to ten thousand.Each layer and each corner of these equipment and measurement control point General Decentralized to building, Using Decentralization, a large amount of human resources will be occupied by being monitored in situ and operating, and be almost difficult to realize sometimes.It is therefore it provides a kind of Based on the building automatic control system of P-BUS buses, system administration level is improved, reduces maintenance management person works amount, section Save operation energy consumption.

Invention content

The purpose of the present invention is to provide a kind of building automatic control system based on P-BUS buses, by being provided with BA servers, BA Logical HEAs, BA logic controllers, DDC controllers, sensor, switching value acquisition module, execution module, are adopted It with distributed frame, is attached by P-BUS buses, without a large amount of cable laying and numerous and diverse control design case, solved The problem of existing building automatic control system management level is low, maintenance management person works amount is big, operation energy consumption is high.

In order to solve the above technical problems, the present invention is achieved by the following technical solutions：

The present invention is the building automatic control system based on P-BUS buses, including BA servers, BA work stations, system It is integrated to connection module, interchanger, BA Logical HEAs, BA logic controllers, BA control logics host, DDC controllers, sensor, Switching value acquisition module, execution module；The sensor is connected by RS458 buses and BA logic controllers；The sensor It is connected by data acquisition and signal converting transmission module with DDC controllers；The switching value acquisition module passes through P-BUS buses It is connected respectively with BA logic controllers, DDC controllers；The execution module respectively with BA logic controllers, DDC controller phases Connection；The DDC controllers are connected by RS458 buses or P-BUS buses with BA Logical HEAs；The DDC controllers pass through ICP/IP protocol is connected with interchanger；The BA logic controllers are communicated by RS458 buses with BA control logic hosts； The BA control logics host is connected by ICP/IP protocol and interchanger；The BA Logical HEAs are by ICP/IP protocol with handing over It changes planes and is connected；The interchanger is by ICP/IP protocol respectively with the system integration to connection module, BA servers, BA work station phases Connection.

Further, the sensor includes liquid level sensor, temperature sensor, carbon monoxide transducer, carbon dioxide Sensor, humidity sensor, flow sensor, differential pressure pickup；The liquid level information of the corresponding monitoring point of sensor acquisition, Temperature information, carbonomonoxide concentration information, gas concentration lwevel information, humidity information, flow information, differential pressure information, and will adopt The information of collection is transmitted to BA logic controllers and DDC controllers.

Further, the system integration includes boiler communication interface, elevator device interface, transformation and distribution system to connection module Interface, cold water main unit interface.

Further, switching logic is included in the BA Logical HEAs, CL Compare Logic, arithmetic logic, send value logic, set Logic adjusts logic, temporal logic, sequential logic, PID logic, floating-point actuator logic, water pump logic, for variable air rate VAV In application with general HVAC controls.

Further, the BA logic controllers include the special control logic of several air-conditionings, for handling variable air rate VAV controls It makes, freely program, common apparatus control function, the BA logic controllers use Pyxos Bus communication networks, included 485- 2 buses support the access of several modbus-rtu sensors to use.

Further, the ICP/IP protocol uses five layer models of TCP/IP；Five layer models of TCP/IP include physics Layer, link layer, network layer, transport layer, application layer；The physical layer is using huffman coding message sink coding, RS error correcting codes, PCM Modulation technique is into row data communication；The link layer is packaged framing, Error Control and transparent transmission；The network layer passes through Router is routed；The transport layer provides data transmission for communicating pair；The application layer uses File Transfer Protocol.

Further, the execution module includes on off controller, alarm, handpiece Water Chilling Units controller, fan valve executor And display；The DDC controllers are converted by signal and transmission control module is connected with execution module；The BA logic controls Device driving execution module action.

The invention has the advantages that：

1st, the present invention causes the device to periodically, predictably obtain the right to use at network by using P-BUS communications protocol, The certainty operation for realizing equipment, the high-speed communication for realizing data, the lasting management for realizing network；Sensor, switching value are adopted Collect the setting of module, execution module, BA Logical HEAs, BA logic controllers, BA control logics host, DDC controllers, make system Function and control modification it is convenient, flexible, do not need to live rewiring, it is energy saving, improve efficiency, reduce manpower safeguard into Energy waste caused by sheet and supervision are not in place.

2nd, the BA Logical HEAs in the present invention, BA logic controllers, BA control logics host, DDC controllers pass through control Layer network is communicated with RS458 buses or P-BUS bus modes, using distributed intelligence formula control system, is controlled any in layer network The normal operation of system and the transmission of signal will not be influenced during node failure, wiring installation is simple, and maintaining is convenient, Great amount of cost is saved, equipment operation is more safe and reliable, warm and humid to air-conditioning, wind turbine, environment by the system integration to connection module Degree, security alarm etc. are controlled, and meet the multifunctional usage in a variety of places, are directly used without product is needed to change, and are saved big The integrated expense and cost of equipment of amount.

Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.

Description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, embodiment will be described below required Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.

Fig. 1 is the structure diagram of the building automatic control system the present invention is based on P-BUS buses；

Fig. 2 is P-BUS bus topolopy figures；

Fig. 3 is five layer model system construction drawing of ICP/IP protocol.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts Embodiment shall fall within the protection scope of the present invention.

It please refers to Fig.1 shown in -3, the present invention is the building automatic control system based on P-BUS buses, is serviced including BA Device, BA work stations, the system integration to connection module, interchanger, BA Logical HEAs, BA logic controllers, BA control logics host, DDC controllers, sensor, switching value acquisition module, execution module；Sensor passes through RS458 buses and BA logic controller phases Connection；Sensor is acquired by data and signal converting transmission module is connected with DDC controllers；Switching value acquisition module passes through P- BUS buses are connected respectively with BA logic controllers, DDC controllers；Execution module respectively with BA logic controllers, DDC controllers It is connected；DDC controllers are connected by RS458 buses or P-BUS buses with BA Logical HEAs；DDC controllers are assisted by TCP/IP View is connected with interchanger；BA logic controllers are communicated by RS458 buses with BA control logic hosts；BA control logic masters Machine is connected by ICP/IP protocol and interchanger；BA Logical HEAs are connected by ICP/IP protocol and interchanger；Interchanger passes through ICP/IP protocol is respectively connected to connection module, BA servers, BA work stations with the system integration.

Wherein, sensor includes liquid level sensor, temperature sensor, carbon monoxide transducer, flow sensor, pressure difference biography Sensor；The liquid level information of the corresponding monitoring point of sensor acquisition, temperature information, carbonomonoxide concentration information, flow information, pressure difference Information, and the information of acquisition is transmitted to BA logic controllers and DDC controllers.

Wherein, the system integration includes connection module boiler communication interface, elevator device interface, transformation and distribution system interface, cold Water host interface.

Wherein, switching logic is included in BA Logical HEAs, CL Compare Logic, arithmetic logic, send value logic, logic of sets, tune Logic, temporal logic, sequential logic, PID logic, floating-point actuator logic, water pump logic are saved, for variable air rate VAV and general In the application of HVAC controls.

Wherein, BA logic controllers include the special control logic of several air-conditionings, are controlled, freely for handling variable air rate VAV Programming, common apparatus control function, BA logic controllers use Pyxos Bus communication networks, if included 485-2 buses are supported The access of dry modbus-rtu sensors uses.

Wherein, ICP/IP protocol uses five layer models of TCP/IP；Five layer models of TCP/IP include physical layer, link layer, net Network layers, transport layer, application layer；Physical layer carries out data using huffman coding message sink coding, RS error correcting codes, PCM modulation techniques Communication；Link layer is packaged framing, Error Control and transparent transmission；Network layer is routed by router；Transmission Layer provides data transmission for communicating pair；Application layer uses File Transfer Protocol.

Wherein, execution module includes on off controller, alarm, handpiece Water Chilling Units controller, fan valve executor and display； DDC controllers are converted by signal and transmission control module is connected with execution module；BA logic controllers driving execution module is moved Make.

BA Logical HEAs include various control logic：Switching logic：It leads directly to, negate, positive pulse triggering is opened, positive pulse triggering It closes, positive pulse negates；CL Compare Logic：And-or inverter, exclusive or, with or be equal to, be more than, being less than, being not more than, not less than etc.；Operation Logic：Addition subtraction multiplication and division, take the remainder, take large values, getting the small value, being averaged, bit arithmetic, cold and hot amount calculate etc. logics；Send value logic： Connection send value, positive pulse to send value, negative pulse that value, variation is sent to send the logics such as value；Logic of sets：It is patrolled in set, outside set etc. Volume；Adjust logic：The logics such as connection is incremented by, connection is successively decreased；Temporal logic：Timing is opened, timed-shutoff, condition switch；Unit logic： Control the team control of air-conditioner host；Sequential logic：The detection and sequence operation that air-conditioner host is opened are controlled, judges that air-conditioner host is It is no to have unlocking condition；PID logic：Air blow and return ratio or heating water valve are controlled, is adjusted in real time according to wind pushing temperature；Floating-point performs Device logic：When part valve is floating-point valve, this logic can be used to be adjusted through row；Water pump logic：According to water level control Pump switch respectively opens water pump switching.It can be used in the various applications of variable air rate VAV and general HVAC controls.

Each BA logic controllers include the special control logic of several air-conditionings, and master chip is specifically used to processing variable air rate VAV is controlled；Controller provides flexible universal input, so as to external sensor, numeral input, simulation output；Each control Device can be programmed freely, and user can go the module of selection connection different function that each work(can simultaneously be configured according to the needs of oneself The attribute of energy module.With common apparatus control function, common apparatus includes heat exchanger, radiant panel, heating unit, ventilation list Member, fan coil and heat pump, without central wind turbine, major function has ventilation, filters, and heats, refrigeration, humidification and heat dissipation. It is suitble to the steam of control HVAC pipe network systems, hot water and cold water；It usesProcotol；TDM communicates Network, rate 312.5Kbps；Can Pyxos Bus communication networks can also be used with single-set operation；Included 485-2 buses The access of several modbus-rtu sensors can be supported to use, biography not of the same race is can access when sensor communication characteristic is consistent Sensor, element, the software of different manufacturers can be with seamless compatibilities under the agreements such as TCP/IP, RS485, can safeguards system operation, dimension The stability of guarantor, the intelligence building system include many systems, often need to link between different sub-systems or integrate.The present invention P-BUS buses are standard Modbus agreements, can be very good to integrate and link through row with third party device, provide simultaneously BACNET, KNX turn the docking gateway of the other systems such as 485, can link with a lot of other systems through row butt-joint.

Every P bus can connect 30 submodules；Logic primary module is expanded using RS485 or TCP to can control more Sub- equipment；It is configured using software equipment, control programming freely defines input/output function；Self-defined network variable；Application project Teacher can freely program controller, so that controller can meet a variety of different HVAC applications；With major event Alarm, error detection function；Built-in region control function, can do schedule logic；Common apparatus control and pressure correlation or The unrelated single tube of pressure or Double tube VAV controls；The wire connection terminal that can freely dismantle so that wiring letter easier for installation It is single；Either controller housing or actuator all meet CE standards；Rated voltage：24V DC or 24VAC；It is individually negative It carries：Maximum 2200VA resistive loads；The out-put supply of external sensor：20Vdc；Operating temperature：Work and storage：Lowest temperature - 20 DEG C of degree, 65.5 DEG C of maximum temperature；Relative humidity：5%~95% without condensation；Real-time clock：Range of operation：24 hours, 365 My god, perpetual calendar；Power down is backed up：24 hours, 0~50 DEG C；Most of BA main logics module all carries input and output point；Specified electricity Pressure：24V DC or 24V AC, 50~60Hz；Dry contact (DI)：Go detection open-loop, closed-loop；Simulation input (AI)：Simulation Input can realize that current signal is converted with voltage signal by built-in jump cap；Simulation output (AO)：Simulation output must be simultaneously Current or voltage signal；AO output areas：Electric current output 4.0~20.0mA voltage outputs 0Vdc~11Vdc；Numeral output (DO)：The equipment of exportable 300VA resistive powers.

P-BUS communication protocols are based on Pyxos communications protocol, are a kind of link layers for being based on time-sharing multiplexing technology (TDM) Data communication protocol uses two-phase psk signal modulation technique.All devices can periodically, predictably obtain network The right to use, that is to say, that equipment can realize deterministic operation；There is no address information, only data in datagram, do not have Additional accessing cost for data；Network can be run always, not need to carry out using long leading message same between equipment in network Step, thus can realize the high-speed communication of data；It does not need to use Heart-Beat Technology, normal equipment is one's own at each Timeslice all can transmission data, can realize the lasting management of network in this way.Pyxos communication protocols are one and follow strictly The agreement of master/slave network structure, can be there are one main equipment (Pilot nodes) and most 32 from setting in a Pyxos network Standby (Point nodes).By Pilot, message routing is not supported between different slave device Point for all communication. Pyxos communications are communicated using short data packet, and limited number of devices can limit MAC delays, P- in Pyxos networks BUS can carry out seamless compatibility by its internal gateway to buses such as CAN or BACNet.

When being connected between equipment or component based on Pyxos FT technologies, using a pair of of twisted-pair feeder, support a variety of flexible Connection mode：Bus, star, annular, chrysanthemum chain and arbitrary topological structure.Such network installation mode, can subtract Few material and installation personnel cost, further, since only using a pair of of twisted-pair feeder, it is meant that can effectively reduce due to circuit Caused network failure.As shown in Fig. 2, during with bus topology, the maximum length of bus is 400 meters, and branch length can be 0.3 meter, be respectively the terminator cap that resistance-capacitance network that an impedance is 105 ohm forms at the both ends of bus, P is represented in figure Point nodes in Pyxos.

One of the present embodiment has particular application as：

Specific embodiment one：

Building heat source system monitors：Heat source system capital equipment includes boiler, hot water circulating pump (primary, secondary), heat exchange Device, water softening device etc..Boiler provides high-temperature-hot-water, and hot water is provided after heat-exchanger rig carries out heat exchange and supplies heating or raw It applies flexibly；

Sensor is water temperature sensor, water pressure sensor, flow sensor, and execution module is held for switch on/off electric butterfly valve Row device, flow switch, pressure bypass valve acquire boiler system inner parameter, and parameter is transmitted to BA logics by sensor Controller, DDC controllers, BA logic controllers, DDC controllers patrol the data transmission of reception to BA control logics host, BA Host or interchanger are collected, BA servers obtain boiler system inner parameter, predicted according to air-conditioning heat demand, automatic to arrange The number of units of booting by adjusting execution module, makes leaving water temperature maintain near setting value.

Specific embodiment two：

Building air-treatment unit monitors：Air-treatment unit is a kind of centralized air treatment system, generally comprises wind Machine, heater, cooler and each component of filter.Its groundwork process is：The fresh air that outdoor is come and an indoor part After return air mixing, interior is sent into after filtering, heating processing such as (refrigeration), to keep aerial temperature and humidity and cleanliness factor；

Sensor uses wind using duct temperature sensor, humidity sensor, air duct carbon dioxide sensor, execution module Valve actuator, and frost prevention switch is provided with, by the real-time acquisition parameter of sensor, according to return air temperature and setting value, adjust water The aperture of valve, according to the timetable that system is formulated, timing start and stop unit adjusts new air returning valve opening ratio according to return air C02 concentration Example, has the function of screen plugging alarming and anti-frost protection.

Specific embodiment three：

Building cold source system monitors：Cold source system includes handpiece Water Chilling Units, cooling tower, refrigerating water pump, cooling pump, transfer pipeline Deng.The low-temperature receivers such as handpiece Water Chilling Units, chilled water pump, cooling water pump and auxiliary device are installed together under normal circumstances, composition refrigeration Computer room, for completing the task of manufacture chilled water.Automatic building control system is read by communication interface mode joins inside cold water main unit Number；

Sensor is water temperature sensor, water pressure sensor, differential pressure pickup, flow sensor, and execution module is opens Close electric butterfly valve actuator, flow switch, liquid-level switch, each refrigerating water pump, cooling pump, cooling tower control point position be hand/ Auto state, start and stop state, fault alarm and control point position；In condensate correcting-distribuing device both sides mounting temperature sensor, acquire into returning The temperature of water；Add temperature sensor in air cooling tower Inlet and outlet water both sides；In chilled water, cooling water circulation stage casing set temperature sensor Collecting temperature；Differential pressure pick-up is installed in condensate correcting-distribuing device both sides, adjusts the pressure balance of condensate correcting-distribuing device；It is sometimes also required to acquire The state aperture of differential-pressure bypass valve；It is whether normal that refrigerator operation is detected by flow switch；Cold water main unit and water pump are according to building The equal equal travel time principle sequence start and stop of actual load, freezing supply mains's return water temperature and equipment in building.

In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means At least one implementation of the present invention is contained in reference to the embodiment or example particular features, structures, materials, or characteristics described In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example. Moreover, particular features, structures, materials, or characteristics described can close in any one or several embodiments or example Suitable mode combines.

Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification, It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is in order to preferably explain the present invention Principle and practical application, so as to which skilled artisan be enable to be best understood by and utilize the present invention.The present invention is only It is limited by claims and its four corner and equivalent.

Claims (7)

1. the building automatic control system based on P-BUS buses, which is characterized in that including BA servers, BA work stations, system It is integrated to connection module, interchanger, BA Logical HEAs, BA logic controllers, BA control logics host, DDC controllers, sensor, Switching value acquisition module, execution module；

The sensor is connected by RS458 buses and BA logic controllers；The sensor is acquired by data and signal turns Transmission module is changed to be connected with DDC controllers；

The switching value acquisition module is connected by P-BUS buses with BA logic controllers, DDC controllers respectively；

The execution module is connected respectively with BA logic controllers, DDC controllers；

The DDC controllers are connected by RS458 buses or P-BUS buses with BA Logical HEAs；The DDC controllers pass through ICP/IP protocol is connected with interchanger；

The BA logic controllers are communicated by RS458 buses with BA control logic hosts；The BA control logics host It is connected by ICP/IP protocol and interchanger；

The BA Logical HEAs are connected by ICP/IP protocol and interchanger；

The interchanger is respectively connected to connection module, BA servers, BA work stations with the system integration by ICP/IP protocol.

2. the building automatic control system according to claim 1 based on P-BUS buses, it is characterised in that：

The sensor includes liquid level sensor, temperature sensor, carbon monoxide transducer, carbon dioxide sensor, humidity and passes Sensor, flow sensor, differential pressure pickup；

The liquid level information of the corresponding monitoring point of sensor acquisition, temperature information, carbonomonoxide concentration information, carbon dioxide are dense Information, humidity information, flow information, differential pressure information are spent, and the information of acquisition is transmitted to BA logic controllers and DDC controls Device.

3. the building automatic control system according to claim 1 based on P-BUS buses, which is characterized in that the system System is integrated to include boiler communication interface, elevator device interface, transformation and distribution system interface, cold water main unit interface to connection module.

4. the building automatic control system according to claim 1 based on P-BUS buses, which is characterized in that the BA Include in Logical HEA switching logic, CL Compare Logic, arithmetic logic, send value logic, logic of sets, adjusting logic, temporal logic, Sequential logic, PID logic, floating-point actuator logic, water pump logic, the application controlled for variable air rate VAV and general HVAC.

5. the building automatic control system according to claim 1 based on P-BUS buses, it is characterised in that：

The BA logic controllers include the special control logic of several air-conditionings, control for handling variable air rate VAV, freely program, Common apparatus control function；

The BA logic controllers use Pyxos Bus communication networks, and included 485-2 buses support several modbus-rtu to pass The access of sensor uses.

6. the automatic building control system according to claim 1 based on P-BUS buses, it is characterised in that：

The ICP/IP protocol uses five layer models of TCP/IP；Five layer models of TCP/IP include physical layer, link layer, network Layer, transport layer, application layer；

Wherein, the physical layer using huffman coding message sink coding, RS error correcting codes, PCM modulation techniques into row data communication；

Wherein, the link layer is packaged framing, Error Control and transparent transmission；

Wherein, the network layer is routed by router；

Wherein, the transport layer provides data transmission for communicating pair；

Wherein, the application layer uses File Transfer Protocol.

7. the building automatic control system according to claim 1 based on P-BUS buses, it is characterised in that：

The execution module includes on off controller, alarm, handpiece Water Chilling Units controller, fan valve executor and display；

The DDC controllers are converted by signal and transmission control module is connected with execution module；

The BA logic controllers driving execution module action.