CN210609063U - Photovoltaic combiner box monitoring system based on 6LoWPAN - Google Patents
Photovoltaic combiner box monitoring system based on 6LoWPAN Download PDFInfo
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- CN210609063U CN210609063U CN201921281318.6U CN201921281318U CN210609063U CN 210609063 U CN210609063 U CN 210609063U CN 201921281318 U CN201921281318 U CN 201921281318U CN 210609063 U CN210609063 U CN 210609063U
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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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model discloses a photovoltaic combiner box monitoring system based on 6LoWPAN, which belongs to the technical field of photovoltaic combiner box monitoring and comprises a wireless sensor network consisting of a plurality of monitoring nodes, a sink node and a monitoring terminal, wherein the monitoring nodes are connected with the sink node through Ethernet, and the sink node is connected with the monitoring terminal through Ethernet; the monitoring node comprises a CC2530 module, a power supply module, a switching value monitoring module, a voltage and current acquisition module, an Ethernet module, a key circuit module, a clock circuit module, a JTAG debugging interface module, a 485 communication interface and a USART interface module; the utility model discloses to the shortcoming that the wiring of tradition collection flow box monitoring system is complicated, scalability is poor and with high costs, provide a photovoltaic collection flow box monitoring system based on 6LoWPAN wireless network technique, this system has characteristics such as the network deployment is nimble, with low costs, the consumption is little and communication stability, has realized the wireless collection of collection flow box electric energy parameter.
Description
Technical Field
The utility model belongs to the technical field of photovoltaic conflux case monitoring, especially, relate to a photovoltaic conflux case monitoring system based on 6 LoWPAN.
Background
In a large photovoltaic power station system, a direct current combiner box is the most basic power generation unit, and the operation stability of the direct current combiner box is one of key indexes of the power generation efficiency of the whole power station. The traditional wired combiner box monitoring system needs to lay cables in advance, the later maintenance cost is high, the expansibility is poor, and the photovoltaic power station has strong common-mode interference, so that the stability of wired communication is greatly influenced.
The traditional collection flow box monitoring system has the defects of complex wiring, poor expandability, high cost and the like. 6LoWPAN (IPv6 LowPower Wireless Personal Area Network) aims to combine IEEE802.15.4 and IPv6 to realize seamless connection between Wireless sensor Network and IP Network. The 6LoWPAN has been widely used in developed countries in Europe and America, the U.S. national grid company customizes the 6LoWPAN as the U.S. national grid standard specification, and known enterprises such as Cisco and Texas instruments successively promote corresponding hardware platforms. Among open source operating systems in the field of wireless sensor networks, the best-known Contiki, TinyOS have implemented support for the 6LoWPAN technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to traditional collection flow box monitoring system wiring complicated, scalability is poor and shortcoming such as with high costs, provide a photovoltaic collection flow box monitoring system based on 6LoWPAN wireless network technique, this system has characteristics such as the network deployment is nimble, with low costs, the consumption is little and communication stability, has realized the wireless collection of collection flow box electric energy parameter.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
a photovoltaic combiner box monitoring system based on a 6LoWPAN comprises a wireless sensor network consisting of a plurality of monitoring nodes, a sink node and a monitoring terminal, wherein the monitoring nodes are connected with the sink node through an Ethernet, and the sink node is connected with the monitoring terminal through the Ethernet; the monitoring node comprises a CC2530 module, a power supply module, a switching value monitoring module, a voltage and current acquisition module, an Ethernet module, a key circuit module, a clock circuit module, a JTAG debugging interface module, a 485 communication interface and a USART interface module; the power module, the switching value monitoring module, the voltage and current acquisition module, the Ethernet module, the key circuit module, the clock circuit module, the JTAG debugging interface module, the 485 communication interface and the USART interface module are respectively connected with a CC2530 module port.
As the utility model relates to a photovoltaic collection flow box monitoring system's further preferred scheme based on 6LoWPAN, power module contains PV photovoltaic module and power supply conversion circuit, PV photovoltaic module passes through power supply conversion circuit and connects CC2530 module.
As a further preferred scheme of the photovoltaic combiner box monitoring system based on 6LoWPAN of the present invention, the power supply conversion circuit includes a DC12V voltage input terminal, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power chip, a second diode, a first inductor, a third capacitor, a 5V voltage output terminal, a 5V voltage input terminal, a fourth capacitor, a TPS7a7001 power chip, a first resistor, a second resistor, a fifth capacitor, and a 3.3V voltage output terminal;
the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;
the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded.
As the utility model relates to a photovoltaic collection flow box monitoring system's further preferred scheme based on 6LoWPAN, voltage electric current collection module contains hall current sensor and hall voltage sensor, hall current sensor adopts south Beijing letter rui spectrum sensing technology limited CHCS-LSP3-10A series, hall voltage sensor adopts south Beijing letter rui spectrum sensing technology limited's CHVS-AS3.3 series, and its measuring range is 0 ~ 20A and 0 ~ 1500V respectively.
As a further preferred scheme of the photovoltaic combiner box monitoring system based on 6LoWPAN, the CC2530 module contains 8051CPU unit and radio frequency transceiver.
As the utility model relates to a photovoltaic collection flow box monitoring system's further preferred scheme based on 6LoWPAN, the node of assembling contains wiFi module, SD card, microprocessor module, ZiGBee chip and radio frequency circuit module, wiFi module, SD card are connected with microprocessor module respectively, microprocessor module passes through ZiGBee chip and connects radio frequency circuit module the utility model adopts above technical scheme to compare with prior art, has following technological effect:
1. the utility model provides a photovoltaic combiner box monitoring system based on 6LoWPAN wireless network technology, aiming at the defects of complex wiring, poor expandability, high cost and the like of the traditional combiner box monitoring system, the system has the characteristics of flexible networking, low cost, low power consumption, stable communication and the like, and realizes the wireless acquisition of the electric energy parameters of the combiner box;
2. the utility model takes CC2530 of TI company as a hardware core platform, and a set of photovoltaic combiner box monitoring system based on 6LoWPAN wireless sensing network technology is provided, and the combiner box monitoring system has the advantages of no wiring, low cost, smooth man-machine interaction and the like; a test network comprising 5 monitoring nodes, 1 boundary gateway and a PC server is set up; this 6LoWPAN monitoring system has realized the real-time supervision and the management to the collection flow box electric energy parameter, and its reliability and stability can satisfy photovoltaic collection flow box monitoring system's requirement, have higher using value.
Drawings
FIG. 1 is a schematic diagram of the overall system structure of the present invention;
fig. 2 is a schematic structural diagram of the monitoring node of the present invention;
fig. 3 is a circuit diagram of the power supply conversion circuit of the present invention;
fig. 4 is a schematic structural diagram of the sink node of the present invention.
The method comprises the following steps of 1-monitoring nodes and 2-wireless sensor networks.
Detailed Description
The technical scheme of the utility model is further explained in detail with the attached drawings as follows:
a photovoltaic combiner box monitoring system based on a 6LoWPAN (Low-power wireless personal area network), as shown in figure 1, comprises a wireless sensor network 2 consisting of a plurality of monitoring nodes 1, a sink node and a monitoring terminal, wherein the monitoring nodes 1 are connected with the sink node through Ethernet, and the sink node is connected with the monitoring terminal through the Ethernet;
as shown in fig. 2, the monitoring node 1 includes a CC2530 module, a power supply module, a switching value monitoring module, a voltage and current acquisition module, an ethernet module, a key circuit module, a clock circuit module, a JTAG debug interface module, a 485 communication interface, and a USART interface module; the power module, the switching value monitoring module, the voltage and current acquisition module, the Ethernet module, the key circuit module, the clock circuit module, the JTAG debugging interface module, the 485 communication interface and the USART interface module are respectively connected with a CC2530 module port. The power module includes a PV photovoltaic module and a power conversion circuit, the PV photovoltaic module is connected to the CC2530 module through the power conversion circuit.
The voltage and current acquisition module comprises a Hall current sensor and a Hall voltage sensor, the Hall current sensor adopts a CHCS-LSP3-10A series of Nanjing Xinrui spectrum sensing technology, and the Hall voltage sensor adopts a CHVS-AS3.3 series of Nanjing Xinrui spectrum sensing technology, wherein the measuring ranges of the Hall voltage sensor and the Hall voltage sensor are respectively 0-20A and 0-1500V.
The CC2530 module includes an 8051CPU unit and a radio frequency transceiver.
As shown in fig. 4, the sink node includes a WiFi module, an SD card, a microprocessor module, a ZiGBee chip, and a radio frequency circuit module, where the WiFi module and the SD card are respectively connected to the microprocessor module, and the microprocessor module is connected to the radio frequency circuit module through the ZiGBee chip.
The specific embodiment is as follows:
the utility model discloses photovoltaic collection flow box monitoring system overall framework based on 6LoWPAN according to the three-layer framework design of standard thing networking systems, divide into sensing layer, transmission layer and application layer. The sensing layer is responsible for forming a wireless sensing network based on the 6LoWPAN technology, realizes acquisition and uploading of voltage and current parameters and some switching values in the combiner box, and uploads the parameters to the monitoring platform in a standard IP data packet format through a user protocol. The border gateway is mainly responsible for managing the whole wireless sensing network and ensuring normal communication between the sensing network and an external IP network.
The transmission layer adopts the traditional wired Ethernet mode for transmission. Considering that the cost of establishing a three-way handshake connection in a TCP transmission mode is high for nodes, the three-way handshake connection is not suitable for a low-speed wireless sensor network such as a sensor network 6LoWPAN, a convergence monitoring system is an auxiliary system, the requirement on the packet loss rate is not strict, and the monitoring of data in the whole convergence box is not influenced by a small amount of packet loss, so that a UDP transmission protocol is adopted by a transmission layer.
The application layer is mainly used for designing an upper computer monitoring platform, and functions of real-time display, storage and query of the electric energy parameters of the combiner box, information recording of the combiner box equipment and the like are achieved.
The monitoring node hardware platform mainly comprises a CC2530 module, a power supply module, a switching value monitoring module, a voltage and current acquisition module, a serial port debugging module and a conventional peripheral circuit. The hardware structure of the monitoring node is shown in fig. 2.
Wherein, the power module:
the monitoring nodes adopt PV photovoltaic components for self power supply, the output voltage of the junction box can reach 200V-1000V, and the voltage of the main control chip and other peripheral circuits is 3.3V and 5V, so that a PT15-500S12 photovoltaic special power supply module is selected, the output voltage of the junction box is converted into DC12V, and the 12V voltage is sequentially reduced to 5V and 3.3V through LM2576S-5.0 and a TPS7A7001 power supply chip.
The power supply conversion circuit shown in fig. 3 comprises a DC12V voltage input terminal, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power chip, a second diode, a first inductor, a third capacitor, a 5V voltage output terminal, a 5V voltage input terminal, a fourth capacitor, a TPS7a7001 power chip, a first resistor, a second resistor, a fifth capacitor, and a 3.3V voltage output terminal;
the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;
the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded.
The voltage and current acquisition module:
the utility model discloses selected hall current, voltage sensor are south Beijing letter rui spectrum sensing technology limited company CHCS-LSP3-10A series and CHVS-AS3.3 series respectively, and its measuring range is 0 ~ 20A and 0 ~ 1500V respectively. The current and voltage signals are output to 0-3.3V voltage signals through the Hall sensor, and analog signals to be collected are output through an RC filter and a voltage follower.
Switching value monitoring module: the monitoring objects of the switching value comprise the failure state of the lightning protector and the switching state of the circuit breaker. A remote signaling port of the lightning protector and a breaker state signal line are isolated by an optocoupler TLP521 and then connected with a main chip, the remote signaling port of the lightning protector and the breaker state signal are both at a low level under normal conditions, and the optocoupler outputs a high level; when the lightning protection device senses lightning stroke, is damaged or the breaker is cut off, the optical coupler outputs high level.
The 6LoWPAN border gateway is a bridge connecting the 6LoWPAN sensing network and the IP network, and is the core of the 6LoWPAN network. The utility model discloses a border gateway only is responsible for the interconversion to 6LoWPAN message and ethernet message. The border gateway only needs to bear dozens of monitoring nodes, and has no higher requirement on data storage. The performance and the cost are considered comprehensively, the boundary gateway adopts a hardware structure basically the same as that of the monitoring node, and the difference is that a data acquisition circuit is removed, and an Ethernet module is added. Wherein the Ethernet module employs an ENC28J60 network chip integrating MAC and PHY and a network transformer HR 911105A. The utility model discloses use CC2530 to be the 6LoWPAN wireless sensor network photovoltaic collection flow box monitoring system of hardware core. The system has simple network hierarchy and good compatibility with an IP network. The design of the border gateway is completed based on the Contiki2.6 network protocol stack, and the mutual communication between the sensing network and the IP network is realized. The utility model discloses a 6LoWPAN monitoring system satisfies actual collection flow box monitoring system requirement to stable transmission, the real-time demonstration and the managerial function of data, has higher using value.
Claims (6)
1. The utility model provides a photovoltaic collection flow box monitoring system based on 6LoWPAN, its characterized in that: the monitoring system comprises a wireless sensor network consisting of a plurality of monitoring nodes, a sink node and a monitoring terminal, wherein the monitoring nodes are connected with the sink node through Ethernet, and the sink node is connected with the monitoring terminal through the Ethernet; the monitoring node comprises a CC2530 module, a power supply module, a switching value monitoring module, a voltage and current acquisition module, an Ethernet module, a key circuit module, a clock circuit module, a JTAG debugging interface module, a 485 communication interface and a USART interface module; the power module, the switching value monitoring module, the voltage and current acquisition module, the Ethernet module, the key circuit module, the clock circuit module, the JTAG debugging interface module, the 485 communication interface and the USART interface module are respectively connected with a CC2530 module port.
2. The photovoltaic combiner box monitoring system based on 6LoWPAN of claim 1, wherein: the power module includes a PV photovoltaic module and a power conversion circuit, the PV photovoltaic module is connected to the CC2530 module through the power conversion circuit.
3. The photovoltaic combiner box monitoring system based on 6LoWPAN of claim 2, wherein: the power supply conversion circuit comprises a DC12V voltage input end, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power supply chip, a second diode, a first inductor, a third capacitor, a 5V voltage output end, a 5V voltage input end, a fourth capacitor, a TPS7A7001 power supply chip, a first resistor, a second resistor, a fifth capacitor and a 3.3V voltage output end;
the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;
the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded.
4. The photovoltaic combiner box monitoring system based on 6LoWPAN of claim 1, wherein: the voltage and current acquisition module comprises a Hall current sensor and a Hall voltage sensor, the Hall current sensor adopts a CHCS-LSP3-10A series of Nanjing Xinrui spectrum sensing technology, and the Hall voltage sensor adopts a CHVS-AS3.3 series of Nanjing Xinrui spectrum sensing technology, wherein the measuring ranges of the Hall voltage sensor and the Hall voltage sensor are respectively 0-20A and 0-1500V.
5. The photovoltaic combiner box monitoring system based on 6LoWPAN of claim 1, wherein: the CC2530 module includes an 8051CPU unit and a radio frequency transceiver.
6. The photovoltaic combiner box monitoring system based on 6LoWPAN of claim 1, wherein: the sink node comprises a WiFi module, an SD card, a microprocessor module, a ZiGBee chip and a radio frequency circuit module, wherein the WiFi module and the SD card are respectively connected with the microprocessor module, and the microprocessor module is connected with the radio frequency circuit module through the ZiGBee chip.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209196A (en) * | 2020-09-22 | 2021-01-12 | 淮北矿业股份有限公司 | Fault diagnosis and monitoring system of mine hoist |
| CN112886635A (en) * | 2021-01-27 | 2021-06-01 | 许昌学院 | Intelligent photovoltaic circuit of thing networking |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209196A (en) * | 2020-09-22 | 2021-01-12 | 淮北矿业股份有限公司 | Fault diagnosis and monitoring system of mine hoist |
| CN112886635A (en) * | 2021-01-27 | 2021-06-01 | 许昌学院 | Intelligent photovoltaic circuit of thing networking |
| CN112886635B (en) * | 2021-01-27 | 2024-01-16 | 许昌学院 | Intelligent photovoltaic circuit of internet of things |
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