CN112947318A - Environmental monitoring system based on electric automation - Google Patents
Environmental monitoring system based on electric automation Download PDFInfo
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- CN112947318A CN112947318A CN201911257558.7A CN201911257558A CN112947318A CN 112947318 A CN112947318 A CN 112947318A CN 201911257558 A CN201911257558 A CN 201911257558A CN 112947318 A CN112947318 A CN 112947318A
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- 230000007613 environmental effect Effects 0.000 title claims description 10
- 238000004891 communication Methods 0.000 claims abstract description 24
- 238000007781 pre-processing Methods 0.000 claims abstract description 23
- 238000013500 data storage Methods 0.000 claims abstract description 15
- 230000005856 abnormality Effects 0.000 claims abstract description 6
- 238000009776 industrial production Methods 0.000 claims abstract description 4
- 238000007726 management method Methods 0.000 claims description 10
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- 239000012530 fluid Substances 0.000 claims description 3
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- 239000002341 toxic gas Substances 0.000 claims description 3
- 231100001261 hazardous Toxicity 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 6
- 231100000279 safety data Toxicity 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000013480 data collection Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000006855 networking Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
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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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
- G05B19/41855—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication by local area network [LAN], network structure
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4188—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by CIM planning or realisation
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses an environment monitoring system based on electrical automation, which comprises a plurality of sub-monitoring points, a cloud server and a mobile terminal, wherein the sub-monitoring points comprise electrical automation equipment applied to a plurality of industrial productions, the electrical automation equipment is internally provided with a power supply module, a data acquisition module and a monitoring terminal, the data acquisition module is used for acquiring various data of a working environment of a working area where the electrical automation equipment is located, and the monitoring terminal comprises a data preprocessing module, a wireless communication module, a positioning module, an abnormality alarm module, a microprocessor module and a data storage module; the cloud server comprises a cloud interface, a cloud computing unit, a monitoring system background unit and a database server, and is connected with the monitoring terminal through the cloud interface. The invention realizes the low-cost and stable real-time monitoring of the working environment quality of the electric automation equipment, has the advantages of good universality and convenient use, and greatly improves the safety performance of the electric automation production.
Description
Technical Field
The invention relates to the technical field of electrical automation, in particular to an environmental monitoring system based on electrical automation.
Background
The electrical automation becomes an important component of high and new technology industry, is widely applied to the fields of industry, agriculture, national defense and the like, and plays an increasingly important role in national economy. The antenna extends to various industries, is small to the design of a switch and large to the research of an aerospace plane, and has the figure of the aerospace plane. The automation is a high-tech company specially engaged in research, development, production and sale of intelligent automatic control, digitalization and networking controllers and sensors, and a plurality of functional modules and a perfect embedded solution can meet the personalized requirements of a plurality of users to the greatest extent. Company products have a variety of product families to meet the needs of customers. The automated equipment is made up of vibratory trays in a coordinated fashion.
Most of the existing electric automation devices are applied in the industrial field, and the monitoring and control of the environment are widely applied in the industrial field, including an automatic monitoring technology, a process control technology, a communication technology, and the like. The environment monitoring system mainly relates to the collection, display and transmission of some information, and the collection objects of the environment monitoring are different due to different application occasions. In the technical field of electrical automation, an environment monitoring system aiming at an automation equipment area is not related, so that the environment in an industrial area is monitored in time, and the safety performance of electrical automation production is improved.
Disclosure of Invention
The invention aims to provide an electric automation-based environment monitoring system, which realizes low-cost and stable real-time monitoring of the working environment quality of electric automation equipment, can set different environment safety data thresholds according to different working environments, is suitable for different use places, has the advantages of good universality and convenience in use, and can set viewing permission in a plurality of automation equipment according to use requirements so as to carry out hierarchical management on the plurality of electric automation equipment and improve the safety performance of electric automation production, so that the problem of environmental monitoring aiming at the automation equipment area in the field of electric automation technology provided in the background technology is solved.
In order to achieve the purpose, the invention provides the following technical scheme:
an environment monitoring system based on electrical automation comprises a plurality of sub-monitoring points, a cloud server and a mobile terminal, wherein the sub-monitoring points comprise electrical automation equipment applied to a plurality of industrial productions, a power supply module, a data acquisition module and a monitoring terminal are arranged in the electrical automation equipment, the power supply module comprises a power supply and a power supply management circuit which are provided by a power distribution network, the power supply supplies power to the data acquisition module and the monitoring terminal through the power supply management circuit, the data acquisition module is used for acquiring various data of a working environment of a working area where the electrical automation equipment is located, and the monitoring terminal is used for receiving various data of the working environment and sending the various data to the cloud server and the mobile terminal;
the monitoring terminal comprises a data preprocessing module, a wireless communication module, a positioning module, an abnormity alarm module, a microprocessor module and a data storage module, wherein the data acquisition module is connected with the data preprocessing module, the microprocessor module is used as the core of the monitoring terminal and is respectively connected with the data preprocessing module, the wireless communication module, the positioning module, the abnormity alarm module and the data storage module, the data preprocessing module is used for filtering, amplifying and carrying out analog-to-digital conversion on data acquired by the data acquisition module, the positioning module is used for acquiring the position information of the monitoring terminal, the abnormity alarm module is used for alarming when the acquired data is abnormal, the data storage module is used for storing the acquired real-time data and the data in a normal range, and the wireless communication module is used for establishing network communication between the monitoring terminal and the cloud server as well as between the monitoring terminal and the mobile terminal, the microprocessor module is used for receiving signals sent by the positioning module and the data preprocessing module, sending the signals to the wireless communication module, calling out data in a normal range in the data storage module, comparing and analyzing the data, and sending a control signal to the abnormity alarm module if the data is abnormal;
the cloud server includes: the system comprises a cloud interface, a cloud computing unit, a monitoring system background unit and a database server; the cloud server is connected with the monitoring terminal through a cloud interface;
the mobile terminal comprises a smart phone, a computer or a tablet.
Still further, the data acquisition module comprises a photosensitive sensor, a temperature sensor, a humidity sensor, a harmful and toxic gas sensor, a fluid sensor, a sound sensitive sensor, a chemical sensor and a flame sensor.
Further, the power supply provides 380V power to the electrical automation equipment for an external distribution network.
Furthermore, the data preprocessing module comprises a signal filtering circuit, a signal amplifying circuit and an analog-to-digital conversion circuit.
Further, the wireless communication module comprises one or more of GPRS, 3G, 4G, 5G, WIFI and Bluetooth.
Furthermore, the microprocessor module adopts the P89LPC930 as a core controller which is a single-chip packaged microcontroller, the instruction execution time is 2-4 clock cycles, and is 6 times that of an 80C51 device, the number of elements and the area of a circuit board are greatly reduced, and the cost of the electric automation equipment is reduced.
Furthermore, the abnormity alarm module comprises a loudspeaker sound alarm circuit and an LED flash lamp alarm circuit, and the loudspeaker and the LED flash lamp which are driven by the loudspeaker sound alarm circuit and the LED flash lamp alarm circuit are both arranged on the electric automation equipment.
Still further, the positioning module comprises one or more of a Beidou positioning system, a GPS positioning system and a wireless base station positioning system.
Compared with the prior art, the invention has the beneficial effects that:
1. the environment monitoring system based on the electrical automation comprises a plurality of sub-monitoring points, a cloud server and a mobile terminal, wherein the sub-monitoring points are applied to the electrical automation equipment, so that the working environment quality of the electrical automation equipment is stably monitored in real time at low cost, and if equipment working environment safety accidents occur, a user can be informed at the first time, and early discovery and early processing are realized.
2. The environment monitoring system based on electric automation can set different environment safety data thresholds according to different working environments, is suitable for different use places, and has the advantages of good universality and convenience in use.
3. The environment monitoring system based on the electrical automation can set viewing permission in a plurality of automation devices according to use requirements so as to carry out hierarchical management on the plurality of electrical automation devices.
Drawings
FIG. 1 is a system framework diagram of the present invention;
fig. 2 is a schematic diagram of a monitoring terminal module of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, an environment monitoring system based on electrical automation is provided, including a plurality of sub-monitoring points, a cloud server, and a mobile terminal, where the sub-monitoring points include electrical automation devices applied to a plurality of industrial productions, each electrical automation device is provided with a power module, a data acquisition module, and a monitoring terminal, the power module includes a power supply and a power supply management circuit provided by a power distribution network, the power supply supplies power to the data acquisition module and the monitoring terminal through the power supply management circuit, the data acquisition module is configured to acquire various data of a working environment of a working area where the electrical automation device is located, and the monitoring terminal is configured to receive various data of the working environment and send the various data to the cloud server and the mobile terminal.
Referring to fig. 2, the monitoring terminal includes a data preprocessing module, a wireless communication module, a positioning module, an abnormality alarm module, a microprocessor module and a data storage module, the data acquisition module is connected to the data preprocessing module, the microprocessor module is used as the core of the monitoring terminal and is respectively connected to the data preprocessing module, the wireless communication module, the positioning module, the abnormality alarm module and the data storage module, the data preprocessing module is used for filtering, amplifying and performing analog-to-digital conversion on the data acquired by the data acquisition module, the positioning module is used for acquiring the position information of the monitoring terminal, the abnormality alarm module is used for alarming when the acquired data is abnormal, the data storage module is used for storing the acquired real-time data and the data in the normal range, the wireless communication module is used for establishing network communication between the monitoring terminal and the cloud server and the mobile terminal, the microprocessor module is used for receiving signals sent by the positioning module and the data preprocessing module, sending the signals to the wireless communication module, calling out data in a normal range in the data storage module, comparing and analyzing the data, and sending a control signal to the abnormity alarm module if the data is abnormal.
Wherein, the cloud server includes: the system comprises a cloud interface, a cloud computing unit, a monitoring system background unit and a database server; the cloud server is connected with the monitoring terminal through a cloud interface, the cloud interface is used for receiving environmental data sent by the monitoring terminal, the cloud computing unit is used for computing and analyzing the environmental data received by the cloud interface, and the monitoring system background unit is used for setting a data detection threshold value of the cloud computing unit; the database server is used for storing the environment data sent by the cloud interface.
The mobile terminal comprises a smart phone, a computer or a tablet.
In the above embodiments, the data collection module includes a photosensitive sensor, a temperature sensor, a humidity sensor, a harmful and toxic gas sensor, a fluid sensor, an acoustic sensor, a chemical sensor, and a flame sensor.
In the above embodiment, the power supply source provides 380V power to the electrical automation device for the external distribution network.
In the above embodiment, the data preprocessing module includes a signal filtering circuit, a signal amplifying circuit and an analog-to-digital conversion circuit.
In the above embodiments, the wireless communication module includes one or more of GPRS, 3G, 4G, 5G, WIFI and bluetooth.
In the above embodiment, the microprocessor module uses the P89LPC930 as a core controller, which is a single chip packaged microcontroller, and the instruction execution time is 2-4 clock cycles, which is 6 times that of the 80C51 device, thereby greatly reducing the number of components and the area of the circuit board and reducing the cost of the electrical automation equipment.
In the above embodiment, the abnormality warning module includes a speaker sound warning circuit and an LED flash lamp warning circuit, and both the speaker and the LED flash lamp driven by the speaker sound warning circuit and the LED flash lamp warning circuit are mounted on the electrical automation device.
In the above embodiments, the positioning module includes one or more of a beidou positioning system, a GPS positioning system, and a wireless base station positioning system.
The working principle is as follows: the environment monitoring system based on electric automation is used for monitoring the working environment of electric automation equipment and comprises a plurality of sub-monitoring points, a cloud server and a mobile terminal, wherein each sub-monitoring point comprises a power supply module, a data acquisition module and a monitoring terminal, each power supply module comprises a power supply and a power supply management circuit, each power supply supplies power to the data acquisition module and the monitoring terminal through the power supply management circuit, each monitoring terminal comprises a data preprocessing module, a wireless communication module, a positioning module, an abnormity alarm module, a microprocessor module and a data storage module, each data of the working environment is acquired through the data acquisition module and is sent to the data preprocessing module, the data preprocessing module filters, amplifies and converts the data acquired by the data acquisition module and sends the data to the microprocessor module, and the microprocessor module calls out the data in the normal range in the data storage module and compares the data sent by the data preprocessing module for analysis, if the monitoring terminal is abnormal, a control signal is sent to the abnormal alarm module, the positioning module collects position information of the monitoring terminal (namely the automation equipment), the abnormal alarm module gives an alarm, the microprocessor module sends the signal to the wireless communication module, and the wireless communication module establishes network communication among the monitoring terminal, the cloud server and the mobile terminal.
In summary, the following steps: the environment monitoring system based on the electrical automation comprises a plurality of sub-monitoring points, a cloud server and a mobile terminal, wherein the sub-monitoring points are applied to the electrical automation equipment, so that the working environment quality of the electrical automation equipment is stably monitored in real time at low cost, and if equipment working environment safety accidents occur, a user can be informed in the first time, and early discovery and early processing are realized; in addition, different environment safety data thresholds can be set according to different working environments, so that the method is suitable for different use places, and has the advantages of good universality and convenience in use; in addition, the checking authority can be set in the plurality of automation devices according to the use requirements, so that the plurality of electrical automation devices can be managed in a grading mode.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. An environment monitoring system based on electrical automation comprises a plurality of sub-monitoring points, a cloud server and a mobile terminal, and is characterized in that the sub-monitoring points comprise electrical automation equipment applied to a plurality of industrial productions, a power supply module, a data acquisition module and a monitoring terminal are arranged in the electrical automation equipment, the power supply module comprises a power supply and a power supply management circuit which are provided by a power distribution network, the power supply supplies power to the data acquisition module and the monitoring terminal through the power supply management circuit, the data acquisition module is used for acquiring various data of a working environment of a working area of the electrical automation equipment, and the monitoring terminal is used for receiving various data of the working environment and sending the various data to the cloud server and the mobile terminal;
the monitoring terminal comprises a data preprocessing module, a wireless communication module, a positioning module, an abnormity alarm module, a microprocessor module and a data storage module, wherein the data acquisition module is connected with the data preprocessing module, the microprocessor module is used as the core of the monitoring terminal and is respectively connected with the data preprocessing module, the wireless communication module, the positioning module, the abnormity alarm module and the data storage module, the data preprocessing module is used for filtering, amplifying and carrying out analog-to-digital conversion on data acquired by the data acquisition module, the positioning module is used for acquiring the position information of the monitoring terminal, the abnormity alarm module is used for alarming when the acquired data is abnormal, the data storage module is used for storing the acquired real-time data and the data in a normal range, and the wireless communication module is used for establishing network communication between the monitoring terminal and the cloud server as well as between the monitoring terminal and the mobile terminal, the microprocessor module is used for receiving signals sent by the positioning module and the data preprocessing module, sending the signals to the wireless communication module, calling out data in a normal range in the data storage module, comparing and analyzing the data, and sending a control signal to the abnormity alarm module if the data is abnormal;
the cloud server includes: the system comprises a cloud interface, a cloud computing unit, a monitoring system background unit and a database server; the cloud server is connected with the monitoring terminal through a cloud interface;
the mobile terminal comprises a smart phone, a computer or a tablet.
2. The electrical automation-based environmental monitoring system of claim 1 wherein the data acquisition module comprises a light sensitive sensor, a temperature sensor, a humidity sensor, a hazardous and toxic gas sensor, a fluid sensor, an acoustic sensor, a chemical sensor, and a flame sensor.
3. The electrical automation-based environmental monitoring system of claim 1 wherein the power supply provides 380V power to the electrical automation equipment from an external power distribution grid.
4. The environmental monitoring system based on electric automation as set forth in claim 1, wherein the data preprocessing module comprises a signal filtering circuit, a signal amplifying circuit and an analog-to-digital conversion circuit.
5. The electrical automation-based environment monitoring system of claim 1 wherein the wireless communication module comprises one or more of GPRS, 3G, 4G, 5G, WIFI, and bluetooth.
6. The environmental monitoring system based on electric automation as set forth in claim 1, wherein the microprocessor module uses P89LPC930 as core controller, which is a single chip packaged microcontroller, and the command execution time is 2-4 clock cycles, 6 times that of 80C51 device, thereby greatly reducing the number of components and circuit board area and reducing the cost of electric automation equipment.
7. The electrical automation-based environment monitoring system of claim 1, wherein the abnormality warning module comprises a speaker audio warning circuit and an LED flash warning circuit, and both the speaker and the LED flash driven by the speaker audio warning circuit and the LED flash warning circuit are mounted on the electrical automation device.
8. The electrical automation-based environment monitoring system of claim 1 wherein the location module comprises one or more of a Beidou positioning system, a GPS positioning system and a wireless base station positioning system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911257558.7A CN112947318A (en) | 2019-12-10 | 2019-12-10 | Environmental monitoring system based on electric automation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911257558.7A CN112947318A (en) | 2019-12-10 | 2019-12-10 | Environmental monitoring system based on electric automation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413956A (en) * | 2021-12-17 | 2022-04-29 | 唐山市鼎正科技有限公司 | Automatic change equipment state stability real-time monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413956A (en) * | 2021-12-17 | 2022-04-29 | 唐山市鼎正科技有限公司 | Automatic change equipment state stability real-time monitoring system |
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Application publication date: 20210611 |