CN202331862U - Novel central air conditioner teaching experimental device - Google Patents
Novel central air conditioner teaching experimental device Download PDFInfo
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- CN202331862U CN202331862U CN2011204374246U CN201120437424U CN202331862U CN 202331862 U CN202331862 U CN 202331862U CN 2011204374246 U CN2011204374246 U CN 2011204374246U CN 201120437424 U CN201120437424 U CN 201120437424U CN 202331862 U CN202331862 U CN 202331862U
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- upper monitoring
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- air conditioner
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Abstract
The utility model relates to an experimental device, in particular to a novel central air conditioner teaching experimental device. The device comprises an upper monitoring computer, a control system and a controlled object, wherein a serial LonTalk adapter is mounted on the upper monitoring computer; a LonMarker integrated tool software, an LNSDDE server and a monitoring software are adopted to form a complete software system; the upper monitoring computer and the control system are in network communication through a LonWorks field bus based on a LonTalk protocol; the control layers of control system adopt DDC (Direct Digital Control) modules and are in network connection through a Lon Works; and the DDC stations in the control layer network integrates unequal I/O passages which are used for input and output of digital quantity signals and analog quantity signals. The teaching experimental device provided by the utility model has the advantages of simple structure, visualized experiment data and flexible controlled object, and can simulate various working conditions through setting.
Description
Technical field
The utility model relates to a kind of experimental provision, is specially a kind of novel central air conditioner experiment device for teaching.
Background technology
Central air conditioner is a kind of airhandling equipment that generally adopts in the modern architecture; The development of field bus technique makes it arrive widely in the field of heating ventilation air conditioning crossings on different level and uses; In industry member and numerous buses of depositing, using typical case the most aspect the intelligent building with the LonWorks fieldbus again.Aspect developing intellectual resource communication interface, intelligence sensor, have unique advantage is arranged.Fieldbus The application of new technique in the central air conditioning system makes each universities and colleges specialty relevant with HVAC to the central air conditioner experiment device for teaching of integrated field bus technique a large amount of demands arranged.The central air conditioner of practical application since count many, distribute extensively, visual pattern not, do not suit directly as experiment device for teaching.Though the central air conditioner experiment device for teaching is a lot of in the market, also there is not the central air conditioner experiment device for teaching of integrated field bus technique.The central air conditioner experiment device for teaching of many manufacturer production; Still continued to use conventional means of relay-contactor control mode; Though perhaps some producer has used nonshared control unit and has improved system performance in central air conditioning system; But there is not upper monitoring perhaps just adopting traditional RS485 communication modes with upper Communication Layer yet, comparatively backward.In the central air conditioner experiment device for teaching that oneself has on the market on the other hand; Controlling object is often fixing makes; Lacking flexible, can only simulate single operating mode, generally is no return air design or employing and the design of unconspicuous primary retirn air in the return air design of objective system.
The utility model content
To the problem that exists in the prior art, the purpose of the utility model is to provide a kind of novel central air conditioner experiment device for teaching.
Described novel central air conditioner experiment device for teaching; It is characterized in that comprising upper monitoring computing machine, control system and controlling object; The upper monitoring computing machine is equipped with serial LonTalk adapter, adopts LonMarker integration tool software, LNS DDE server and monitoring software to constitute complete software architecture; Carry out network service through LonWorks fieldbus between described upper monitoring computing machine and the control system based on the LonTalk agreement; Adopt DDC Direct Digital control module to connect between the key-course of control system through the LonWorks bus network; Each DDC station in this layer network is integrated with the I/O passage that port number does not wait, and is used for the input and output of digital quantity signal and analog signals; The upper monitoring computing machine is provided with the module that module parameter is provided with module, node data acquisition module and system is monitored, writes down, controls; Controlling object is divided into refrigeration system district, air system district, control and display field and and electrical control cubicles four parts, adopt the subregion structure, secondary return air system is adopted in its air-treatment.
Described novel central air conditioner experiment device for teaching is characterized in that constituting the lonWorks bus network through the LonTalk adapter between described upper monitoring computing machine and the control system.
Described novel central air conditioner experiment device for teaching is characterized in that DDC Direct Digital control module in the described control system is mounted with and is used for the experimental provision control program.
The utility model is simple in structure, and experimental data visual pattern, but controlling object flexible can be simulated various working through being provided with; Employing secondary return air design, promptly the part of return air is mixed, is handled with new wind, and the air after a part of in addition return air and the heat exchange process carries out blowing after secondary mixes again; Each air inlet, return air inlet, air outlet are equipped with air-valve, the scalable aperture, but change analog DC formula, primary retirn air, secondary return air and operating mode such as closed through aperture.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Among the figure: 1-upper monitoring computing machine, 2-control system, 3-controlling object.
Embodiment
Below in conjunction with Figure of description the utility model is further specified:
Novel central air conditioner experiment device for teaching comprises upper monitoring computing machine 1, control system 2 and controlling object 3.Upper monitoring computing machine 1 is equipped with serial LonTalK adapter, adopts LonMarker integration tool software, LNS DDE server and monitoring software to constitute complete software architecture.Communicate by letter through LonWorks fieldbus networks between upper monitoring computing machine 1 and the control system 2 based on the LonTalK agreement.Adopt DDC (Direct Digital control) control module to connect between the key-course of control system 2 through the LonWorks bus network; Each DDC station in this layer network is integrated with the I/0 passage that port number does not wait, and is used for the input and output of digital quantity signal and analog signals.The upper monitoring computing machine has the module that module parameter is provided with module, node data acquisition module and system is monitored, writes down, controls.Constitute the lonWorks bus network through the LonTalk adapter between upper monitoring computing machine and the control system.DDC controller in the control system is mounted with and is used for the experimental provision control program.Controlling object 3 is divided into refrigeration system district, air system district, control and display field and and electrical control cubicles four parts, adopt the subregion design, secondary return air system is adopted in its air-treatment.
The upper monitoring computing machine is through constituting the LonWorks fieldbus networks between each DDC control module of LonTalk adapter and control system.
In the objective system of central air conditioner experiment device for teaching; Detect the flow of air-supply and temperature, humidity, wind speed and the chilled water branch road of return air etc. respectively through Temperature Humidity Sensor, air velocity transducer and turbo flow meter, the voltage and current signal that detection signal converts standard to is directly delivered to the analog input channel of DDC control module.
The DDC controller is accomplished after the collection to on-the-spot detection variable through the analog input channel; The control program of downloading according to host computer carries out data processing, control computing to gathering variable; The result of control computing outputs to topworks's compressor, humidifier, chilled water pump, well heater and blower fan etc. through switching value output channel D0 and analog output channel AO, comes the duty of control executing mechanism.
Through the LonWorks fieldbus networks, on the upper monitoring computing machine, monitoring software connects the DDC controller data, but monitored picture inputoutput data in the configuration engineering and demonstration technological process are accomplished monitoring, record, control to system.
Design aspect in central air conditioner experiment device for teaching controlling object; The design of employing secondary return air; A part that is return air is mixed, is handled with new wind; The air that is stranded after wind and the heat exchange process of a part carries out blowing after secondary mixes again in addition: each air inlet, return air inlet, air outlet are equipped with air-valve, the scalable aperture, but through aperture variation analog DC formula, primary retirn air, secondary return air and operating mode such as closed.
To help to understand the utility model through embodiment, but not limit the content of the utility model.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought the protection domain of the utility model.
Claims (2)
1. novel central air conditioner experiment device for teaching is characterized in that comprising upper monitoring computing machine, control system and controlling object, and the upper monitoring computing machine is equipped with serial LonTalk adapter; Carry out network service through LonWorks fieldbus between described upper monitoring computing machine and the control system based on the LonTalk agreement; Adopt DDC Direct Digital control module to connect between the key-course of control system through the LonWorks bus network; Each DDC station in this layer network is integrated with the I/O passage that port number does not wait, and is used for the input and output of digital quantity signal and analog signals; The upper monitoring computing machine is provided with the module that module parameter is provided with module, node data acquisition module and system is monitored, writes down, controls; Controlling object is divided into refrigeration system district, air system district, control and display field and and electrical control cubicles four parts, adopt the subregion structure, secondary return air system is adopted in its air-treatment.
2. novel central air conditioner experiment device for teaching according to claim 1 is characterized in that constituting the lonWorks bus network through the LonTalk adapter between described upper monitoring computing machine and the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204374246U CN202331862U (en) | 2011-11-08 | 2011-11-08 | Novel central air conditioner teaching experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204374246U CN202331862U (en) | 2011-11-08 | 2011-11-08 | Novel central air conditioner teaching experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202331862U true CN202331862U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204374246U Expired - Lifetime CN202331862U (en) | 2011-11-08 | 2011-11-08 | Novel central air conditioner teaching experimental device |
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| Country | Link |
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| CN (1) | CN202331862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759746A (en) * | 2014-12-18 | 2016-07-13 | 深圳市深蓝电子股份有限公司 | DDC controller control strategy online updating method based on Lonworks communication protocol |
-
2011
- 2011-11-08 CN CN2011204374246U patent/CN202331862U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759746A (en) * | 2014-12-18 | 2016-07-13 | 深圳市深蓝电子股份有限公司 | DDC controller control strategy online updating method based on Lonworks communication protocol |
| CN105759746B (en) * | 2014-12-18 | 2018-07-27 | 深圳市深蓝电子股份有限公司 | The online updating method of DDC controller control strategies based on Lonworks communication protocols |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |