CN111189496A - Lightning protection information on-line monitoring and early warning system for central air-conditioning product - Google Patents
Lightning protection information on-line monitoring and early warning system for central air-conditioning product Download PDFInfo
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- CN111189496A CN111189496A CN202010059193.3A CN202010059193A CN111189496A CN 111189496 A CN111189496 A CN 111189496A CN 202010059193 A CN202010059193 A CN 202010059193A CN 111189496 A CN111189496 A CN 111189496A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/62—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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/17—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
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- G06N3/02—Neural networks
- G06N3/04—Architecture, e.g. interconnection topology
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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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
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/10—Weather information or forecasts
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Abstract
The invention provides a lightning protection information on-line monitoring and early warning system for a central air-conditioning product, and belongs to the field of lightning protection and the Internet of things. In order to solve the problem that the performance change of the lightning protection equipment cannot be tracked and monitored in real time due to the installation and use environment of a central air-conditioning product, the system comprises a signal sampling module and a management control module, wherein the signal sampling module is connected with the management control module; the signal sampling module is used for collecting the lightning protection state information of the lightning protection equipment corresponding to each central air conditioner and transmitting the information to the management control module; and the management control module is used for setting a lightning protection state information threshold value of the lightning protection equipment corresponding to each central air conditioner, establishing a corresponding neural network model according to the lightning protection grade parameters of the central air conditioner and the corresponding lightning protection equipment, the historical data of the lightning protection state and the meteorological lightning data, predicting the lightning protection hidden danger of each central air conditioner according to the collected lightning protection state information, and checking the central air conditioners with the lightning protection hidden dangers in advance.
Description
Technical Field
The invention relates to the technical field of lightning protection and Internet of things, in particular to a system for on-line monitoring and early warning of lightning protection information of a central air-conditioning product.
Background
At present, relevant national specifications and standards do not provide special provisions for the lightning protection problem of the outdoor air conditioner and the bracket thereof, so that the lightning protection problem is usually ignored by people. Meanwhile, the lightning protection engineering practice often finds that the lightning protection equipment installed in the system has failure, and the main reasons are as follows: the qualified lightning protection equipment product is selected according to the performance characteristics of the protected equipment or system, the equipment can be protected within the expected service life of the lightning protection equipment in principle, but actually, as the lightning protection equipment works under the power frequency voltage for a long time and continuously bears overvoltage impact, the leakage current is gradually increased, and then the temperature rise is increased. The voltage-dependent voltage of the voltage-dependent resistor changes along with the increasing times of over-voltage bearing, and the protection effect is further deteriorated. Furthermore, the short circuit failure of the lightning protection equipment causes a sudden temperature rise and even a fire.
Therefore, the central air-conditioning product needs to track and monitor the performance change of the lightning protection equipment in real time because of the reasons of installation and use environment and if the lightning protection equipment and reasonable wiring cannot meet the modern lightning protection requirements, and once the performance of the lightning protection equipment is degraded or failed, the intelligent system immediately sends an alarm to remind a worker to maintain or replace, so that the lightning protection system has stronger stability.
Disclosure of Invention
The invention aims to provide a lightning protection information on-line monitoring and early warning system for a central air-conditioning product, which solves the problem that the performance change of a lightning protection device cannot be tracked and monitored in real time due to the installation and use environment of the central air-conditioning product.
The invention solves the technical problem, and adopts the technical scheme that: the system for the on-line monitoring and early warning of the lightning protection information of the central air-conditioning product comprises a signal sampling module and a management control module, wherein the signal sampling module is connected with the management control module;
the signal sampling module is used for collecting lightning protection state information of the lightning protection equipment corresponding to each central air conditioner and transmitting the information to the management control module;
the management control module is used for setting a lightning protection state information threshold value of the lightning protection equipment corresponding to each central air conditioner, establishing a corresponding neural network model according to the lightning protection grade parameters of the central air conditioner and the corresponding lightning protection equipment and by combining historical data of a lightning protection state and meteorological lightning data, and predicting the lightning protection hidden danger of each central air conditioner through the neural network model according to the collected lightning protection state information, so that the central air conditioner with the lightning protection hidden danger is checked in advance.
Further, the relevant lightning protection state information includes the number of lightning strokes, the alternating voltage, the temperature, the leakage current and the remaining life of the lightning protection device.
Further, the lightning protection operation state of each central air conditioner is judged according to the lightning protection grade parameters of each central air conditioner and the corresponding lightning protection equipment, and when the leakage current exceeds a set expected threshold value, the system automatically alarms.
Furthermore, in the life cycle of the central air conditioner, the working state of the piezoresistor is detected in time, whether lightning current invasion occurs in data collected by the system is observed, and when the monitored current exceeds a set expected threshold value, the system automatically alarms.
Furthermore, a lightning protection state information acquisition period is set in the signal acquisition module, the signal acquisition module reads the lightning protection state information of the lightning protection equipment corresponding to each central air conditioner in real time, and the data read in real time are uploaded according to the lightning protection state information acquisition period.
Further, the lightning protection state information acquisition period is ten minutes.
The invention has the advantages that by the system for the on-line monitoring and early warning of the lightning protection information of the central air-conditioning product, the information can be monitored and analyzed in real time by the lightning protection state information of the lightning protection equipment, and the information is transmitted to the monitoring center in real time by utilizing a wireless communication mode, so that the scattered acquisition, the centralized management and the timely early warning are realized.
Drawings
FIG. 1 is a block diagram of a system for on-line monitoring and early warning of lightning protection information of a central air conditioner in an embodiment of the present invention;
FIG. 2 is a diagram of an acquisition model of an information module in an embodiment of the present invention;
fig. 3 is a sampling flow chart of the on-line monitoring and early warning system for lightning protection information of the central air conditioner in the embodiment of the invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the embodiments and the accompanying drawings.
The invention relates to a lightning protection information on-line monitoring and early warning system for a central air-conditioning product, which comprises a signal sampling module and a management control module, wherein the signal sampling module is connected with the management control module;
the signal sampling module is used for collecting lightning protection state information of the lightning protection equipment corresponding to each central air conditioner and transmitting the information to the management control module; and the management control module is used for setting a lightning protection state information threshold value of the lightning protection equipment corresponding to each central air conditioner, establishing a corresponding neural network model by combining historical data of a lightning protection state and meteorological lightning data according to the lightning protection grade parameters of the central air conditioner and the corresponding lightning protection equipment, and predicting the lightning protection hidden danger of each central air conditioner through the neural network model according to the collected lightning protection state information to check the central air conditioner with the lightning protection hidden danger in advance.
In the above system, in order to better monitor the lightning protection state of the central air conditioner, the relevant lightning protection state information preferably includes the lightning stroke frequency, the alternating voltage, the temperature, the leakage current, the remaining life and the like of the lightning protection device.
And the lightning protection operation state of each central air conditioner can be judged according to the lightning protection grade parameters of each central air conditioner and the corresponding lightning protection equipment, and when the leakage current exceeds a set expected threshold value, the system automatically alarms. In the life cycle of the central air conditioner, the working state of the piezoresistor is detected in time, whether lightning current invasion occurs in data collected by the system is observed, and when the monitored current exceeds a set expected threshold value, the system automatically alarms.
In the system, a lightning protection state information acquisition period can be set in the signal acquisition module, the signal acquisition module reads the lightning protection state information of the lightning protection equipment corresponding to each central air conditioner in real time, and the data read in real time is uploaded according to the lightning protection state information acquisition period. The lightning protection state information acquisition period is preferably ten minutes.
Examples
The system for the on-line monitoring and early warning of the lightning protection information of the central air-conditioning product comprises a signal sampling module and a management control module, wherein the signal sampling module is connected with the management control module, and a system block diagram of the on-line monitoring and early warning of the lightning protection information of the central air-conditioning product is shown in figure 1.
Specifically, the collection model diagram of the information module is shown in fig. 2, and the signal sampling module includes an application layer, a framework layer and a driving layer.
Wherein:
an application layer: the layer mainly comprises a main module, a data acquisition module, a system access module, an M35 wireless module management module, a serial port debugging/management module and a system parameter configuration management module. The function module of the layer mainly completes the related functions of system application, mainly comprises system parameter management and software upgrading management, collects intelligent hardware data, and reports the data regularly through a 2G/4G/NbIoT network.
A frame layer: this layer mainly encapsulates the system frame modules for use by the application layer modules. And the Flash management module completes the management of Flash in the system chip and provides an interface for an application layer to use. The Utility module is mainly responsible for main tools used in the packaging system, such as format conversion tools, printing debugging tools and the like.
A driving layer: the layer mainly encapsulates the related operations of system hardware, provides a hardware abstraction layer and provides a hardware operation interface for an upper layer. The device mainly comprises a flash, a serial port, a timer, an RTC and other hardware driving modules.
Specifically, the management control module comprises a communication access layer, a data storage and early warning analysis layer and a state monitoring and early warning processing layer. Wherein:
the communication access layer adopts an MQTT publish/subscribe mode message transmission protocol to realize the access and analysis of the signal acquisition module and the Internet of things of the cloud platform, for example, when the signal acquisition module publishes a message, a random topic (topX) is generated, which is beneficial to the multithreading monitoring and message processing of the server side and improves the processing performance of the system.
And the data storage and early warning analysis layer adopts a Time Series Database (Time Series Database) for storing and managing Time Series data and provides a distributed cloud Database service with high performance reading and writing and strong computing capability for the Time Series data.
And the state monitoring and early warning processing layer is used for carrying out application management on the stored and analyzed data, is the highest platform of the whole system, and is responsible for data display, data management, alarm management, log management, user management, equipment management, redundancy management and the like. The sampling flow chart of the on-line monitoring and early warning system for the lightning protection information of the central air conditioner is shown in figure 3.
In practical application, the present embodiment may include the following steps:
firstly, connecting and collecting SPD equipment information: installing corresponding SPD equipment according to the requirement of lightning protection grade, and establishing a one-to-one incidence relation between the central air conditioner outdoor unit and the SPD and the signal acquisition module; and the signal acquisition module is used for reading information such as lightning stroke times, alternating voltage, SPD temperature, leakage current, residual life, grounding state and the like of the SPD equipment in real time.
And secondly, setting a lightning protection early warning threshold, and setting a reasonable and uniform protection parameter threshold at the information acquisition module and the system service end according to the lightning protection grade parameters of the central air conditioner and the SPD, wherein the reasonable and uniform protection parameter threshold mainly comprises lightning stroke times, alternating voltage, SPD temperature, leakage current, residual life and the like. Once the information acquisition module monitors the early warning information, the early warning information is immediately transmitted to a cloud system through the Internet of things network, and early warning is timely carried out.
Setting a lightning protection state information acquisition period, enabling an information acquisition module to realize real-time acquisition and reading of SPD equipment, customizing an uploading period of the lightning protection state information according to user requirements, and enabling a system to default a state that full-parameter information is uploaded every 10 minutes, wherein the management control center still has the authority of manually counting and copying the lightning protection state.
Fourthly, the lightning protection management control system of the central air conditioner: the system judges the collected information again, provides various practical functions of online monitoring, such as early warning function, fault warning, data statistics, lightning stroke event statistics, historical records, operation safety protection, short message voice alarm, interface configuration, log management and the like, and facilitates technicians to optimize the lightning protection system according to actual conditions of each site.
And fifthly, in the life cycle of the air conditioning equipment, the working state of the piezoresistor is detected in time, whether lightning current invasion occurs in data collected by the system is observed, and when the monitored current exceeds a set expected threshold value, an automatic safety alarm function can be realized. In the thunder and lightning high-rise period, the timing sampling period can be set to be 1min according to the lightning protection safety requirement and grade of the user equipment, and when the monitoring current exceeds a set expected threshold value, automatic safety alarm can be realized.
Claims (6)
1. The system for the on-line monitoring and early warning of the lightning protection information of the central air-conditioning product is characterized by comprising a signal sampling module and a management control module, wherein the signal sampling module is connected with the management control module;
the signal sampling module is used for collecting lightning protection state information of the lightning protection equipment corresponding to each central air conditioner and transmitting the information to the management control module;
the management control module is used for setting a lightning protection state information threshold value of the lightning protection equipment corresponding to each central air conditioner, establishing a corresponding neural network model according to the lightning protection grade parameters of the central air conditioner and the corresponding lightning protection equipment and by combining historical data of a lightning protection state and meteorological lightning data, and predicting the lightning protection hidden danger of each central air conditioner through the neural network model according to the collected lightning protection state information, so that the central air conditioner with the lightning protection hidden danger is checked in advance.
2. The system for on-line monitoring and pre-warning of lightning protection information of central air conditioning products of claim 1, wherein the relevant lightning protection status information includes lightning stroke frequency, ac voltage, temperature, leakage current and remaining life of the lightning protection equipment.
3. The system of claim 2, wherein the lightning protection operation status of each central air conditioner is determined according to the lightning protection rating parameters of each central air conditioner and the corresponding lightning protection device, and the system automatically alarms when the leakage current exceeds a predetermined threshold.
4. The system for on-line monitoring and early warning of lightning protection information of a central air-conditioning product according to claim 1, wherein in the life cycle of the central air-conditioning product, the working state of the piezoresistor is detected in time, whether lightning current invasion occurs to the data collected by the system is observed, and when the monitored current exceeds a set expected threshold, the system automatically alarms.
5. The system of claim 1, wherein a lightning protection state information collection period is set in the signal collection module, and the signal collection module reads lightning protection state information of the lightning protection device corresponding to each central air conditioner in real time and uploads the data read in real time according to the lightning protection state information collection period.
6. The system for on-line monitoring and warning of lightning protection information of central air conditioning products according to claim 5, wherein the lightning protection status information collection period is ten minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010059193.3A CN111189496A (en) | 2020-01-16 | 2020-01-16 | Lightning protection information on-line monitoring and early warning system for central air-conditioning product |
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| CN202010059193.3A CN111189496A (en) | 2020-01-16 | 2020-01-16 | Lightning protection information on-line monitoring and early warning system for central air-conditioning product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339982A (en) * | 2021-05-26 | 2021-09-03 | 青岛海尔空调器有限总公司 | Lightning protection control method and device for air conditioner and outdoor unit of air conditioner |
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| CN108845207A (en) * | 2018-06-26 | 2018-11-20 | 伏诺瓦(天津)科技有限公司 | Power transmission line lightning shielding disaster alarm reminding method and device |
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2020
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| WO1992010804A1 (en) * | 1990-12-14 | 1992-06-25 | Ktaadn, Inc. | Apparatus and method for predicting lightning |
| JP2011010407A (en) * | 2009-06-24 | 2011-01-13 | Nec Saitama Ltd | Surge protection circuit and method |
| CN104134320A (en) * | 2014-03-27 | 2014-11-05 | 深圳市科威电子测试有限公司 | Lightning protection environment online monitoring alarm network system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113339982A (en) * | 2021-05-26 | 2021-09-03 | 青岛海尔空调器有限总公司 | Lightning protection control method and device for air conditioner and outdoor unit of air conditioner |
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| CN113339982B (en) * | 2021-05-26 | 2022-12-23 | 青岛海尔空调器有限总公司 | Lightning protection control method and device for air conditioner and outdoor unit of air conditioner |
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Application publication date: 20200522 |