CN107940672A - A kind of central air-conditioning alarm method based on PLC - Google Patents
A kind of central air-conditioning alarm method based on PLC Download PDFInfo
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- CN107940672A CN107940672A CN201710607357.XA CN201710607357A CN107940672A CN 107940672 A CN107940672 A CN 107940672A CN 201710607357 A CN201710607357 A CN 201710607357A CN 107940672 A CN107940672 A CN 107940672A
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Abstract
The present invention provides a kind of central air-conditioning alarm method based on PLC, and method is：Gather host relevant parameter, the temperature signal of cooling blower and the temperature of each cooling point of central air-conditioning；Above three parts signal is inputted in central processing system and is handled；And it is sent to host computer and carries out real-time display；Host computer is made upper limit control and is controlled with lower limit, if controlling more than the upper limit or being controlled less than lower limit, makes alarm.The present invention uses SIEMENS PLC, can be also used in combination nearby using control system, and increased cost is controllable, and in tolerance interval；It can implement the quick operation steady in a long-term that must be notified maintenance personal, ensure each cooling point device to greatest extent, reduce equipment failure rate, reduce equipment damage.
Description
Technical field
The invention belongs to alarm technique field, and in particular to a kind of central air-conditioning alarm method based on PLC.
Background technology
The use of central air-conditioning at present is industrial and civilian very universal, particularly among industrial enterprise, center
Air-conditioning has become the important equipment that industrial equipment cools, and even a moment cannot stop sometimes, therefore central air-conditioning is steady
Fixed operation seems most important, in addition to the monitoring to Central air-conditioning unit, each air-conditioning draught fan unit and electric indoor temperature
Need to monitor in real time.What Central air-conditioning unit generally used at present has lithium bromide, screw machine unit etc., and lithium bromide chiller is mainly former
Reason is the physical reactions principle using lithium bromide, is heated using steam, clean circulating water cooling, and screw machine unit is cold using compressor
But principle.The cooling principle of central air-conditioning is water-cooled to certain temperature as shown in Figure 1, central air-conditioning will freeze, and passes through water pump
Chilled water is evacuated in each cooling blower, heat exchange is carried out in cooling blower, chilled water return water temperature is raised, it is cold to form heat
Freeze water, enter back into Central air-conditioning unit and cooled down, so complete a circulation.
Central air-conditioning is mainly the rotation by cooling blower inner blower, forms the heat exchange of hot-air and chilled water, from
And indoor air temperature is cooled down, and therefore temperature measuring equipment is installed on each wind turbine, can be with when indoor temperature is less than design temperature
Cooling water valve is controlled, to reduce meeting for central air-compressor set, therefore the temperature of the temperature of cooling blower and respective chambers
Detection is just particularly important, because their damage may all impact the operational outfit service life even fatal wound
Evil, therefore timely temperature alarming, timely processing is for needing the stable operation of cooling device to play a crucial role.
Therefore, a kind of side that real time monitoring can be carried out to central air-conditioning and is alarmed is developed in order to solve problem above
Method is those skilled in the art institute urgent need to solve the problem.
The content of the invention
To solve the above-mentioned problems, the present invention provides a kind of central air-conditioning alarm method based on PLC.
In order to achieve the above object, the present invention provides following technical solution：
A kind of central air-conditioning alarm method based on PLC, method are：Gather host relevant parameter, the cooling blower of central air-conditioning
Temperature signal and each cooling point temperature；Above three parts signal is inputted in central processing system and is handled；And
It is sent to host computer and carries out real-time display；Host computer is made upper limit control and is controlled with lower limit, if under controlling or be less than more than the upper limit
Limit control, then make alarm.
Preferably, the cooling water temperature of the host relevant parameter of central air-conditioning including Central air-conditioning unit, steam pressure,
Clean circulating water pressure and Central air-conditioning unit operating status.
Preferably, the temperature of each cooling point is measured using Pt100 thermometric thermal resistances.
Preferably, central processing system is made of SIEMENS PLC and associated communication module.
Preferably, central processing system is communicated by ICP/IP protocol and host computer.
Preferably, host computer is provided with KingView process configuration software.
Recorded preferably, host computer can carry out real-time display with historical trend.
Powered preferably, central processing is provided using ups power.
The present invention provides a kind of central air-conditioning alarm method based on PLC, using central processing system to central air-conditioning
Host relevant parameter, the temperature signal of each cooling blower and the temperature of each cooling point be acquired and handle, upper
Real-time display is carried out on the machine of position, while is judged according to handling result, upper limit control is made and is controlled with lower limit, when more than the upper limit
Control or make alarm when being controlled less than lower limit, and sound-light alarm is sent in operating room, to find in time, people is safeguarded in prompting
Member is on the scene in time, prevents from causing the accident and the damage of equipment.
Compared with prior art, the present invention using SIEMENS PLC, can be also used in combination nearby using control system, it is increased into
This is controllable, and in tolerance interval；Can implement it is quick must notify maintenance personal, to greatest extent ensure each cooling point device
Operation steady in a long-term, reduces equipment failure rate, reduces equipment damage.
Brief description of the drawings
The connection diagram of Fig. 1, the present invention.
Embodiment
Technical solution provided by the invention is described in detail below with reference to specific embodiment, it should be understood that following specific
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.
A kind of central air-conditioning alarm method based on PLC, method are：Gather host relevant parameter, the cooling of central air-conditioning
The temperature of the temperature signal of wind turbine and each cooling point；Above three parts signal is inputted in central processing system and is located
Reason；And it is sent to host computer and carries out real-time display；Host computer is made upper limit control and is controlled with lower limit, if more than upper limit control or low
Controlled in lower limit, then make alarm.
Wherein, the host relevant parameter of central air-conditioning includes cooling water temperature, steam pressure, the net ring of Central air-conditioning unit
Water pressure and Central air-conditioning unit operating status.The temperature of each cooling point is measured using Pt100 thermometric thermal resistances.
Central processing system is made of SIEMENS PLC and associated communication module, by ICP/IP protocol and host computer into
Row communication, and powered using ups power.
Host computer is provided with KingView process configuration software, carries out real-time display and is recorded with historical trend.
If Fig. 1 is the central air-conditioning alarm system based on PLC alarmed according to the method described above, central processing system pair
The temperature of the host relevant parameter of central air-conditioning, the temperature signal of cooling blower and each cooling point is obtained, and is uploaded
Host computer carries out real-time display and historical trend record, is carried out at the same time sound-light alarm, prompts maintenance personal's maintenance in time.And
Central processing system is powered using UPS, prevents powering-off state.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in the above embodiment, further includes
Formed technical solution is combined by above technical characteristic.
Claims (8)
- A kind of 1. central air-conditioning alarm method based on PLC, it is characterised in that：Method is：The host for gathering central air-conditioning is related The temperature of parameter, the temperature signal of cooling blower and each cooling point；Above three parts signal is inputted into central processing system In handled；And it is sent to host computer and carries out real-time display；Host computer is made upper limit control and is controlled with lower limit, if exceeding the upper limit Control is controlled less than lower limit, then makes alarm.
- A kind of 2. central air-conditioning alarm method based on PLC according to claim 1, it is characterised in that：The central hollow The host relevant parameter of tune includes cooling water temperature, steam pressure, clean circulating water pressure and the central air-conditioning of Central air-conditioning unit Operating states of the units.
- A kind of 3. central air-conditioning alarm method based on PLC according to claim 1, it is characterised in that：It is described each cold But the temperature put is measured using Pt100 thermometric thermal resistances.
- A kind of 4. central air-conditioning alarm method based on PLC according to claim 1, it is characterised in that：The centre Reason system is made of SIEMENS PLC and associated communication module.
- A kind of 5. central air-conditioning alarm method based on PLC according to claim 1, it is characterised in that：The centre Reason system is communicated by ICP/IP protocol and host computer.
- A kind of 6. central air-conditioning alarm method based on PLC according to claim 1, it is characterised in that：The host computer KingView process configuration software is installed.
- A kind of 7. central air-conditioning alarm method based on PLC according to claim 1, it is characterised in that：The host computer Real-time display can be carried out to record with historical trend.
- A kind of 8. central air-conditioning alarm method based on PLC according to claim 1, it is characterised in that：The centre Reason is provided is powered using ups power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607357.XA CN107940672A (en) | 2017-07-24 | 2017-07-24 | A kind of central air-conditioning alarm method based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607357.XA CN107940672A (en) | 2017-07-24 | 2017-07-24 | A kind of central air-conditioning alarm method based on PLC |
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| CN107940672A true CN107940672A (en) | 2018-04-20 |
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| CN201710607357.XA Pending CN107940672A (en) | 2017-07-24 | 2017-07-24 | A kind of central air-conditioning alarm method based on PLC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695936A (en) * | 2018-12-13 | 2019-04-30 | 江苏点燃节能科技有限公司 | Central air-conditioning energy intelligent control system |
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| CN101140096A (en) * | 2007-10-18 | 2008-03-12 | 苏州艾隆科技有限公司 | electricity economizer centralized management method and system of central air-conditioning |
| CN201318774Y (en) * | 2008-11-24 | 2009-09-30 | 郝光宗 | Energy-saving control device for water circulating pump of central air-conditioner |
| CN102338448A (en) * | 2011-08-29 | 2012-02-01 | 上海迪普自动化技术有限公司 | High-efficiency energy-saving control system for central air conditioner of large-sized supermarket |
| JP2015040649A (en) * | 2013-08-21 | 2015-03-02 | 株式会社Ｎｔｔファシリティーズ | Water-cooled air conditioning system |
| CN205079394U (en) * | 2015-09-11 | 2016-03-09 | 严百坤 | Central air conditioning intelligent display alarm device |
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2017
- 2017-07-24 CN CN201710607357.XA patent/CN107940672A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140096A (en) * | 2007-10-18 | 2008-03-12 | 苏州艾隆科技有限公司 | electricity economizer centralized management method and system of central air-conditioning |
| CN201318774Y (en) * | 2008-11-24 | 2009-09-30 | 郝光宗 | Energy-saving control device for water circulating pump of central air-conditioner |
| CN102338448A (en) * | 2011-08-29 | 2012-02-01 | 上海迪普自动化技术有限公司 | High-efficiency energy-saving control system for central air conditioner of large-sized supermarket |
| JP2015040649A (en) * | 2013-08-21 | 2015-03-02 | 株式会社Ｎｔｔファシリティーズ | Water-cooled air conditioning system |
| CN205079394U (en) * | 2015-09-11 | 2016-03-09 | 严百坤 | Central air conditioning intelligent display alarm device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695936A (en) * | 2018-12-13 | 2019-04-30 | 江苏点燃节能科技有限公司 | Central air-conditioning energy intelligent control system |
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Application publication date: 20180420 |