CN112556100A - Central air conditioning group data acquisition device based on PLC protocol - Google Patents
Central air conditioning group data acquisition device based on PLC protocol Download PDFInfo
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- CN112556100A CN112556100A CN202011352812.4A CN202011352812A CN112556100A CN 112556100 A CN112556100 A CN 112556100A CN 202011352812 A CN202011352812 A CN 202011352812A CN 112556100 A CN112556100 A CN 112556100A
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- central air
- air conditioning
- conditioning unit
- sensor
- pump
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
-
- 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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to the technical field of central air-conditioning units, and discloses a central air-conditioning unit data acquisition device based on a PLC (programmable logic controller) protocol, which comprises a console, a PLC communication protocol, a central air-conditioning unit, a cooling tower, a cooling pump, a water distributor, an air cabinet, a fan coil, a water collector and a freezing pump, wherein the console is connected with the PLC communication protocol; the central air conditioning unit includes: the cooling tower, the cooling pump, the water separator, the fan cabinet, the fan coil, the water collector and the freezing pump; and the input and output end of the control console is connected with the input and output end of the PLC communication protocol. The voltage detector is used for detecting the voltage of the central air conditioning unit in real time, when the voltage is at a peak value for a long time, the central air conditioning unit needs to be radiated or detected, and all parts of the central air conditioning unit need to be detected, so that the working voltage data acquisition feedback of the central air conditioning unit can be intuitively reflected, and the abnormal working condition of the central air conditioning unit can be found in time.
Description
Technical Field
The invention relates to the technical field of central air conditioning units, in particular to a central air conditioning unit data acquisition device based on a PLC protocol.
Background
The central air conditioning system is different from the traditional refrigerant type air conditioner, intensively processes air to meet the comfort requirement, and adopts the principle of liquid gasification refrigeration to provide the required cold energy for the air conditioning system so as to offset the heat load of the indoor environment; the heating system provides the required heat for the air conditioning system to offset the cold and warm load of the indoor environment, the refrigerating system is the vital part of the central air conditioning system, and the type, the operation mode, the structural form and the like of the refrigerating system directly influence the economical efficiency, the high efficiency and the rationality of the central air conditioning system in operation.
The communication protocol of the PLC is a communication support protocol for connecting different operating systems and different hardware architectures.
At present, along with the establishment of large-scale office buildings and large-scale markets, a central air conditioning unit is popularized continuously, the home decoration of the central air conditioning unit is more and more, the central air conditioning unit in the large-scale office buildings and the large-scale markets has longer service time and larger load, so that the problem of damage is more caused, and the maintenance cost is higher after damage, so that the central air conditioning unit data acquisition device based on the PLC protocol is provided, the data collection of the central air conditioning unit according to the PLC protocol is facilitated in the working process of the central air conditioning unit, the abnormity and the problem of the central air conditioning unit are found in time through data analogy or data abnormity, the maintenance is stopped in time, or the inspection and the maintenance are carried out, the service life of the central air conditioning unit is prolonged, the maintenance cost of the central air conditioning unit.
Disclosure of Invention
The invention aims to provide a central air conditioning unit data acquisition device based on a PLC protocol, which solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a central air conditioning group data acquisition device based on a PLC (programmable logic controller) protocol comprises a console, a PLC communication protocol, a central air conditioning unit, a cooling tower, a cooling pump, a water separator, an air cabinet, a fan coil, a water collector and a freezing pump;
the central air conditioning unit includes: the cooling tower, the cooling pump, the water separator, the fan cabinet, the fan coil, the water collector and the freezing pump;
the input and output ends of the console are connected with the input and output ends of a PLC communication protocol, the input and output ends of the PLC communication protocol are connected with the input and output ends of the central air conditioning unit, and the output end of the central air conditioning unit is respectively connected with the input ends of the voltage detector, the cooling tower and the water separator;
the output end of the cooling tower is respectively connected with the input ends of the cooling pump and the second water level sensor, and the output end of the cooling tower is respectively connected with the input ends of the first flow sensor and the central air conditioning unit;
the output end of the water separator is respectively connected with the input ends of the fan cabinet and the fan coil, the output end of the fan cabinet is respectively connected with the input ends of the first temperature sensor and the water collector, the output end of the fan coil is respectively connected with the input ends of the water collector, the second temperature sensor, the camera and the vibration sensor, and the output end of the water collector is respectively connected with the input ends of the first water level sensor and the freezing pump;
and the output end of the refrigerating pump is respectively connected with the second flow sensor and the input end of the central air conditioning unit.
In a preferred embodiment of the present invention, the first temperature sensor is mounted in a fan cabinet frame, and the second temperature sensor is mounted on an inner wall of a fan coil.
In a preferred embodiment of the present invention, the camera and the vibration sensor are both mounted inside the fan coil.
In a preferred embodiment of the present invention, the first water level sensor is attached to an inner bottom of the sump, and the second water level sensor is attached to an inner bottom of the cooling tower.
In a preferred embodiment of the present invention, the first flow sensor is in communication with a cooling pump, and the second flow sensor is in communication with a freezing pump.
In a preferred embodiment of the present invention, the output ends of the voltage detector, the first flow sensor of the second water level sensor, the second temperature sensor, the camera, the vibration sensor, the first water level sensor, the second flow sensor and the first temperature sensor are connected to the input end of the PLC communication protocol.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the voltage detector is arranged to detect the voltage of the central air conditioning unit in real time, when the voltage is at the peak value for a long time, the central air conditioning unit needs to be radiated or detected, and each component of the central air conditioning unit needs to be detected, so that the working voltage data acquisition feedback of the central air conditioning unit can be intuitively reflected, and the abnormal working condition of the central air conditioning unit can be found in time.
2. According to the invention, due to the arrangement of the second temperature sensor, the camera and the vibration sensor, the second temperature sensor is arranged on the fan coil to supervise the output temperature, when an external mouse or poor foreign matter enters the air duct of the fan coil, the signal of the vibration sensor is transmitted back and the camera is started to clean the air duct in time, so that the air duct is prevented from being blocked or damaged due to the bite of the mouse.
3. According to the invention, due to the arrangement of the first water level sensor and the second water level sensor, the first water level sensor and the second water level sensor respectively collect water level data in the water collector and the cooling tower, when the water level data in the water collector and the cooling tower are abnormally reduced, water leakage maintenance needs to be carried out on the pipeline or the water collector and the cooling tower, and the water leakage damage of a house caused by untimely water leakage repair of a central air conditioning unit is avoided.
4. According to the invention, the first flow sensor and the second flow sensor are arranged, and the flow of the cooling pump and the flow of the refrigerating pump are respectively detected by the first flow sensor and the second flow sensor, when the power is constant, the flow difference between the cooling pump and the refrigerating pump is not large, and when the flow difference between the cooling pump and the refrigerating pump is large, the water leakage area can be pre-judged according to the actual flow numerical value condition, so that the water leakage area can be conveniently and quickly found for timely repairing.
5. According to the invention, the first temperature sensor is arranged, so that the heat dissipation condition in the fan cabinet is monitored in real time through the first temperature sensor, and when the temperature in the fan cabinet is in a high value for a long time, the ash in the fan cabinet needs to be cleaned, so that the over-burning or fire caused by high temperature in the fan cabinet is avoided.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of an overall framework of a PLC-based central air conditioning unit data acquisition device according to the present invention;
fig. 2 is a schematic diagram of a data feedback framework of a central air conditioning unit data acquisition device based on a PLC protocol according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, the present invention provides a technical solution: a central air conditioning group data acquisition device based on a PLC (programmable logic controller) protocol comprises a console, a PLC communication protocol, a central air conditioning unit, a cooling tower, a cooling pump, a water separator, an air cabinet, a fan coil, a water collector and a freezing pump;
the central air conditioning unit includes: the cooling tower, the cooling pump, the water separator, the fan cabinet, the fan coil, the water collector and the freezing pump;
the input and output ends of the console are connected with the input and output ends of a PLC communication protocol, the input and output ends of the PLC communication protocol are connected with the input and output ends of the central air conditioning unit, and the output end of the central air conditioning unit is respectively connected with the input ends of the voltage detector, the cooling tower and the water separator;
the output end of the cooling tower is respectively connected with the input ends of the cooling pump and the second water level sensor, and the output end of the cooling tower is respectively connected with the input ends of the first flow sensor and the central air conditioning unit;
the output end of the water separator is respectively connected with the input ends of the fan cabinet and the fan coil, the output end of the fan cabinet is respectively connected with the input ends of the first temperature sensor and the water collector, the output end of the fan coil is respectively connected with the input ends of the water collector, the second temperature sensor, the camera and the vibration sensor, and the output end of the water collector is respectively connected with the input ends of the first water level sensor and the freezing pump;
the output end of the refrigerating pump is respectively connected with the second flow sensor and the input end of the central air conditioning unit; when voltage is in a peak value for a long time, heat dissipation or detection needs to be carried out on a central air conditioning unit, detection needs to be carried out on all components of the central air conditioning unit, data acquisition and feedback of working voltage of the central air conditioning unit can be directly reflected, abnormal working conditions of the central air conditioning unit can be found in time, output temperature is supervised by installing a second temperature sensor on a fan coil, when an external mouse or poor foreign matter enters an air duct of the fan coil, a vibration sensor signal is returned and a camera is started to clean the air duct in time, damage caused by air duct blockage or mouse bite is avoided, heat dissipation conditions in the fan cabinet are monitored in real time through a first temperature sensor, when temperature in the fan cabinet is in a high value for a long time, ash removal needs to be carried out on the fan cabinet, overburning or fire occurring in the fan cabinet due to high temperature, and water level data in a water collector and a cooling tower are respectively detected through the first water level sensor The method comprises the steps of collecting, when water level data in a water collector and a cooling tower are abnormally reduced, water leakage maintenance needs to be carried out on a pipeline or the water collector and the cooling tower, then the flow of a cooling pump and a refrigerating pump is detected by a first flow sensor and a second flow sensor respectively, when the power is fixed, the flow difference between the cooling pump and the refrigerating pump is small, when the flow difference between the cooling pump and the refrigerating pump is large, a water leakage area can be judged in advance according to the actual flow numerical value condition, the water leakage area can be found conveniently and rapidly, and timely repair is carried out.
In this embodiment (please refer to fig. 1 and fig. 2), the first temperature sensor is installed in the blower cabinet frame, and the second temperature sensor is installed on the inner wall of the blower coil; wherein first temperature sensor installs inside the fan cabinet, through the interior heat dissipation condition of first temperature sensor real-time supervision fan cabinet, when the temperature was in higher numerical value for a long time in the fan cabinet, needs carry out the deashing in the fan cabinet appearing, avoids the higher overburning or catching fire of appearing of temperature in the fan cabinet, detects fan coil's tuber pipe through second temperature sensor, detects the air current temperature of central air conditioning output.
In this embodiment (please refer to fig. 1 and 2), the camera and the vibration sensor are both installed inside the fan coil; after external mice or poor foreign matters enter the air duct of the fan coil, the vibration sensor signal is transmitted back and the camera is started to clean the air duct in time, so that the air duct is prevented from being blocked or the mice are bitten to cause damage.
In this embodiment (please refer to fig. 1 and 2), the first water level sensor is installed at the bottom inside the water collector, the second water level sensor is installed at the bottom inside the cooling tower, the first water level sensor and the second water level sensor respectively collect water level data inside the water collector and the cooling tower, and when the water level data inside the water collector and the cooling tower are abnormally reduced, water leakage inspection and repair are required to be performed on the pipeline or the water collector and the cooling tower.
In the present embodiment (see fig. 1 and 2), the first flow sensor is in communication with the cooling pump, and the second flow sensor is in communication with the freezing pump; the flow of the cooling pump and the flow of the refrigerating pump are respectively detected through the first flow sensor and the second flow sensor, when the power is constant, the flow difference between the cooling pump and the refrigerating pump is not large, and when the flow difference between the cooling pump and the refrigerating pump is large, the water leakage area can be judged in advance according to the actual flow numerical value condition, so that the water leakage area can be conveniently and quickly found, and the repair can be carried out in time.
In this embodiment (please refer to the figure), the output ends of the voltage detector, the first flow sensor of the second water level sensor, the second temperature sensor, the camera, the vibration sensor, the first water level sensor, the second flow sensor and the first temperature sensor are connected with the input end of the PLC communication protocol; wherein, the signals of voltage detector, the first flow sensor of second level sensor, second temperature sensor, camera, vibration sensor, first level sensor, second flow sensor and first temperature sensor carry out signal conversion through PLC communication protocol, and then feed back in the control cabinet.
When the central air conditioning group data acquisition device based on the PLC protocol is used, it needs to be explained that the invention is the central air conditioning group data acquisition device based on the PLC protocol, which comprises an outer frame 1, a fingerprint lock 2, a mounting groove 3, a telescopic rod 4, a fingerprint acquisition screen 5, a spring 6, a camera 7, a bolt 8, a pressing plate 9, a toughened film 10, a storage battery 11, a sealing ring 12, a convex block 13, a cover plate 14, a guide groove 15, a casing 16, a guide rail 17, a sliding block 18 and a cleaning cloth 19, wherein the components are all universal standard components or components known by technicians in the field, and the structure and the principle of the components are known by technicians in the technical manuals or conventional experimental methods.
When in use, signals of the voltage detector, the second water level sensor, the first flow sensor, the second temperature sensor, the camera, the vibration sensor, the first water level sensor, the second flow sensor and the first temperature sensor are subjected to signal conversion through a PLC communication protocol and then fed back to the console, when the voltage is at a peak value for a long time, heat dissipation or detection needs to be carried out on the central air conditioning unit, all components of the central air conditioning unit need to be detected, the working voltage data acquisition and feedback of the central air conditioning unit can be visually reflected, the abnormal working condition of the central air conditioning unit can be found out in time, the output temperature is monitored by installing the second temperature sensor on the fan coil, when an external mouse or poor foreign matters enter the air duct of the fan coil, the signal of the vibration sensor is returned and the camera is started to clean the air duct in time, and the air duct blockage or the damage caused by the mouse bite, the heat dissipation condition in the fan cabinet is monitored in real time through the first temperature sensor, when the temperature in the fan cabinet is in a high value for a long time, the ash in the fan cabinet needs to be cleaned, the over-burning or fire caused by high temperature in the fan cabinet is avoided, the water level data in the water collector and the cooling tower are respectively collected through the first water level sensor and the second water level sensor, when the water level data in the water collector and the cooling tower are abnormally reduced, the water leakage inspection of the pipeline or the water collector and the cooling tower is needed, the flow of the cooling pump and the flow of the refrigerating pump are respectively detected by the first flow sensor and the second flow sensor, when the power is constant, the flow rate difference between the cooling pump and the refrigerating pump is not large, when the flow rate difference between the cooling pump and the refrigerating pump is large, the water leakage area can be pre-judged according to the actual flow numerical value condition, so that the water leakage area can be conveniently and quickly found and repaired in time.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A central air conditioning unit data acquisition device based on a PLC (programmable logic controller) protocol is characterized by comprising a console, a PLC communication protocol, a central air conditioning unit, a cooling tower, a cooling pump, a water separator, an air cabinet, a fan coil, a water collector and a freezing pump;
the central air conditioning unit includes: the cooling tower, the cooling pump, the water separator, the fan cabinet, the fan coil, the water collector and the freezing pump;
the input and output ends of the console are connected with the input and output ends of a PLC communication protocol, the input and output ends of the PLC communication protocol are connected with the input and output ends of the central air conditioning unit, and the output end of the central air conditioning unit is respectively connected with the input ends of the voltage detector, the cooling tower and the water separator;
the output end of the cooling tower is respectively connected with the input ends of the cooling pump and the second water level sensor, and the output end of the cooling tower is respectively connected with the input ends of the first flow sensor and the central air conditioning unit;
the output end of the water separator is respectively connected with the input ends of the fan cabinet and the fan coil, the output end of the fan cabinet is respectively connected with the input ends of the first temperature sensor and the water collector, the output end of the fan coil is respectively connected with the input ends of the water collector, the second temperature sensor, the camera and the vibration sensor, and the output end of the water collector is respectively connected with the input ends of the first water level sensor and the freezing pump;
and the output end of the refrigerating pump is respectively connected with the second flow sensor and the input end of the central air conditioning unit.
2. The PLC-protocol-based central air conditioning unit data acquisition device according to claim 1, characterized in that: the first temperature sensor is installed in the fan cabinet frame, and the second temperature sensor is installed on the inner wall of the fan coil.
3. The PLC-protocol-based central air conditioning unit data acquisition device according to claim 1, characterized in that: the camera and the vibration sensor are both arranged inside the fan coil.
4. The PLC-protocol-based central air conditioning unit data acquisition device according to claim 1, characterized in that: the first water level sensor is arranged at the bottom in the water collector, and the second water level sensor is arranged at the bottom in the cooling tower.
5. The PLC-protocol-based central air conditioning unit data acquisition device according to claim 1, characterized in that: the first flow sensor is in communication with a cooling pump and the second flow sensor is in communication with a freeze pump.
6. The PLC-protocol-based central air conditioning unit data acquisition device according to claim 1, characterized in that: and the output ends of the voltage detector, the first flow sensor of the second water level sensor, the second temperature sensor, the camera, the vibration sensor, the first water level sensor, the second flow sensor and the first temperature sensor are connected with the input end of the PLC communication protocol.
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| CN202011352812.4A CN112556100A (en) | 2020-11-27 | 2020-11-27 | Central air conditioning group data acquisition device based on PLC protocol |
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| CN202011352812.4A CN112556100A (en) | 2020-11-27 | 2020-11-27 | Central air conditioning group data acquisition device based on PLC protocol |
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Citations (5)
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| CN1654893A (en) * | 2005-01-28 | 2005-08-17 | 杨东 | Energy-saving intelligent control system for central air conditioner |
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| CN208025721U (en) * | 2018-03-27 | 2018-10-30 | 扬州华泰节能科技有限公司 | Central air conditioner system |
| CN108895637A (en) * | 2018-04-27 | 2018-11-27 | 上海申铁杰能信息科技有限公司 | A kind of cooling water recirculation system with real-time monitoring and control |
| JP2018189313A (en) * | 2017-05-08 | 2018-11-29 | 東京ガスエンジニアリングソリューションズ株式会社 | Heat source machine control device and heat source machine system |
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2020
- 2020-11-27 CN CN202011352812.4A patent/CN112556100A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654893A (en) * | 2005-01-28 | 2005-08-17 | 杨东 | Energy-saving intelligent control system for central air conditioner |
| CN203262119U (en) * | 2012-12-11 | 2013-11-06 | 内蒙古自治区烟草公司兴安盟公司 | Multifunctional alarming rat guard for machine room |
| JP2018189313A (en) * | 2017-05-08 | 2018-11-29 | 東京ガスエンジニアリングソリューションズ株式会社 | Heat source machine control device and heat source machine system |
| CN208025721U (en) * | 2018-03-27 | 2018-10-30 | 扬州华泰节能科技有限公司 | Central air conditioner system |
| CN108895637A (en) * | 2018-04-27 | 2018-11-27 | 上海申铁杰能信息科技有限公司 | A kind of cooling water recirculation system with real-time monitoring and control |
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