CN217363017U - Inverter data acquisition device - Google Patents
Inverter data acquisition device Download PDFInfo
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- CN217363017U CN217363017U CN202221248379.4U CN202221248379U CN217363017U CN 217363017 U CN217363017 U CN 217363017U CN 202221248379 U CN202221248379 U CN 202221248379U CN 217363017 U CN217363017 U CN 217363017U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses an inverter data acquisition device, which belongs to the technical field of electric power and comprises a video board and an acquisition board, wherein the video board comprises a first controller, a FLASH memory and a video acquisition module, the acquisition board comprises a second controller, a 0-5V interface, a temperature and humidity transmitter, a light intensity sensor, a 485 communication interface, two 485 communication circuits, an analog acquisition unit, a photovoltaic board angle sensor, a photoelectric isolation circuit, a RAM memory, a network interface and a box opening sensor, and the technical problem of providing a photovoltaic power station inverter data acquisition device with high integration and high expansibility is solved, the utility model can intensively acquire the data of a photovoltaic inverter, increases the integration of the data acquisition device, has good expansibility, has the functions of box opening alarm and camera, and can play a role of anti-theft, the utility model discloses a circuit structure simple, the low price is fit for the application place that needs the multiple spot to deploy.
Description
Technical Field
The utility model belongs to the technical field of electric power, especially, relate to an inverter data acquisition device.
Background
The photovoltaic inverter is one of important devices in a photovoltaic power station, and in a photovoltaic centralized control system, photovoltaic equipment generally adopts a telecontrol communication manager to uniformly access data. The photovoltaic communication topological structure is complex, serial port communication is usually used in the photovoltaic communication topological structure, and the data refreshing frequency is lower than that of a fan; because there are many data acquisition points in a photovoltaic power station, a data acquisition device of a photovoltaic centralized control system is required to have a strong integration level, a low price and a strong expansibility, while the conventional data acquisition devices do not have the three points at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an inverter data acquisition device has solved the technical problem that provides a photovoltaic power plant inverter data acquisition device of high integration and high expansibility.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an inverter data acquisition device comprises a video board and an acquisition board, wherein the video board comprises a first controller, a FLASH memory and a video acquisition module, and the FLASH memory and the video acquisition module are connected with the first controller;
the acquisition board comprises a second controller, a 0-5V interface, a temperature and humidity transmitter, a illuminance sensor, a 485 communication interface, two 485 communication circuits, an analog quantity acquisition unit, a photovoltaic board angle sensor, a photoelectric isolation circuit, an RAM (random access memory), a network interface and a box opening sensor, wherein the photovoltaic board angle sensor, the analog quantity acquisition unit, the two 485 communication circuits, the RAM memory, the network interface and the photoelectric isolation circuit are all electrically connected with the second controller, and a UART (universal asynchronous receiver/transmitter) interface of the first controller is communicated with the second controller;
the opening sensor and the auxiliary contact of the external alternating current contactor are connected with the photoelectric isolation circuit;
the two 485 communication circuits comprise two 485 modules, a temperature and humidity transmitter and a light intensity sensor are connected with one 485 module, and a 485 communication interface is connected with the other 485 module;
the analog quantity acquisition unit comprises a primary filter, a sampling resistor, a secondary filter and an amplifier, wherein a 0-5V interface is connected with the primary filter, the primary filter is connected with the sampling resistor, the sampling resistor is connected with the secondary filter, the secondary filter is connected with the amplifier, and the amplifier is connected with the second controller.
Preferably, the model of the first controller is C8051F330, the models of the second controllers are MCIMX287, the model of the FLASH memory is W25Q16 jvsiq, the model of the RAM memory is a DS1200 serial RAM memory chip, the model of the video capture module is OV7670, and the video capture module is externally connected with a camera.
Preferably, the first-stage filter and the second-stage filter are both RC filter circuits, the sampling resistor is a voltage sampling circuit formed by resistors, and the type of the amplifier is a SYSU1-P4-05 type isolation amplifier.
Preferably, the temperature and humidity transmitter and the illuminance sensor both adopt a 485 bus mode to transmit signals, the model of the temperature and humidity transmitter is MZIOT-WS, and the model of the illuminance sensor is 0-65535 Lux.
Preferably, the photovoltaic panel angle sensor communicates with the second controller by using a Modbus interface.
Preferably, the photovoltaic panel angle sensor is AKS-360-1-CA01-VK 2-PM.
Preferably, the optoelectronic isolation circuit includes two circuits of optoelectronic isolators, the type of the optoelectronic isolator is TLP521-1, and a TVS isolation circuit is disposed at an output end of each circuit of the optoelectronic isolators.
Preferably, the 485 communication interface is further provided with a ceramic gas discharge tube for protecting high-voltage signals.
The utility model relates to an inverter data acquisition device, which solves the technical problems of providing a photovoltaic power station inverter data acquisition device with high integration degree and high expansibility, can intensively acquire the data of a photovoltaic inverter, comprises the voltage U, the current I, the active power P, the reactive power Q, the photovoltaic panel steering angle cos phi, the illumination intensity, the operation alarm, the temperature and other information of the inverter, increases the integration degree of the data acquisition device, adopts a 485 bus mode to acquire multi-point temperature and humidity information and illumination intensity information, has good expansibility, can increase or delete the number of sensors at any time, does not influence the actual data acquisition, has the function of case opening alarm, provides a camera shooting function, can play the anti-theft effect, has simple circuit structure and low price, the method is suitable for application sites needing multi-point deployment.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a block diagram of an analog acquisition unit according to the present invention;
fig. 3 is a circuit diagram of the two-way 485 communication circuit of the present invention;
fig. 4 is a circuit diagram of the optoelectronic isolation circuit of the present invention.
Detailed Description
The inverter data acquisition device shown in fig. 1-4 comprises a video board and an acquisition board, wherein the video board comprises a first controller, a FLASH memory and a video acquisition module, and the FLASH memory and the video acquisition module are both connected with the first controller;
the utility model discloses compare in traditional dc-to-ac converter collector and increased a video board, the video board passes through the serial ports and gathers the board communication, can add or delete according to user's needs, and the expansibility is strong.
The model of the first controller is C8051F330, the model of the video acquisition module is OV7670, and the video acquisition module is externally connected with a camera.
The first controller can be responsible for taking pictures through the camera, and can be responsible for monitoring whether the switch cabinet or the combiner box where the inverter data acquisition device is located is stolen.
The acquisition board comprises a second controller, a 0-5V interface, a temperature and humidity transmitter, a illuminance sensor, a 485 communication interface, two 485 communication circuits, an analog quantity acquisition unit, a photovoltaic board angle sensor, a photoelectric isolation circuit, an RAM (random access memory), a network interface and a box opening sensor, wherein the photovoltaic board angle sensor, the analog quantity acquisition unit, the two 485 communication circuits, the RAM memory, the network interface and the photoelectric isolation circuit are all electrically connected with the second controller, and a UART (universal asynchronous receiver/transmitter) interface of the first controller is communicated with the second controller;
the two 485 communication circuits comprise two 485 modules, a temperature and humidity transmitter and a light intensity sensor are connected with one 485 module, and a 485 communication interface is connected with the other 485 module;
the 485 communication interface is also provided with a ceramic gas discharge tube for protecting high-voltage signals.
As shown in fig. 3, the two-way 485 communication circuit of the present invention specifically includes 485 chip U3, resistor R5, resistor R6, resistor R7, resistor R8, TVS tube D9, TVS tube D6, TVS tube D8, 485 chip U4, resistor R9, TVS tube D9, ceramic gas capacitor D9 and ceramic gas capacitor D9, 2 pin and 3 pin of 485 chip U9 are all connected to an IO terminal of the second controller through resistor R9, a group of UART interface connections between 1 pin and 4 pin and the second controller, resistor R9 and resistor R9 are matching resistors on the 485 output bus of 485 chip U9, TVS tube D9 is the ground protection device between 485 chip U9 and the ground protection device of TVS tube D9, and ground protection device is between 485 chip U9 and ground wire protection device of the TVS tube 9.
The 485 chip U4 has the same circuit principle as the 485 chip U3, and is different in that two ground capacitors, namely a ceramic gas capacitor D10 and a ceramic gas capacitor D12, are respectively arranged on the 6 pin and the 7 pin of the 485 chip U4.
During the use, 485 chip U3 is responsible for communicating with temperature and humidity transmitter and light intensity sensor, and 485 chip U4 then connects an outside smart electric meter.
The utility model discloses in, temperature and humidity transmitter with light intensity sensor all adopts 485 bus mode transmission signal, temperature and humidity transmitter's model is MZIOT-WS, light intensity sensor's model is 0-65535 Lux. Temperature and humidity transmitter and light intensity sensor all adopt 485 buses of the same kind to carry out data acquisition, can save the port resource, because the utility model discloses a all be the transmitter, can reduce or increase the collection point of humiture or laser illuminance at any time.
The 485 bus that ceramic gas capacitor can be fine protection and smart electric meter be connected reads electric data such as voltage U, electric current I, active power P, reactive power Q from smart electric meter safely.
The opening sensor and the auxiliary contact of the external alternating current contactor are connected with the photoelectric isolation circuit;
as shown IN fig. 4, the optoelectronic isolation circuit includes an optocoupler U1, a resistor R1, a resistor R2, a TVS tube D1, a TVS tube D2, a capacitor C34, an optocoupler U2, a resistor R3, a resistor R4, a TVS tube D4, a TVS tube D3, and a capacitor C35, a pin 4 of the optocoupler U1 is connected to a positive power supply, a pin 3 is connected to one IO port of the second controller, a resistor R1 is a pull-down resistor of the pin 3 of the optocoupler U1, a capacitor C34 is connected between the pin 1 and the pin 2 of the optocoupler U1, a TVS tube D2 is also connected between the pin 1 and the pin 2 of the optocoupler U1, a pin 1 of the optocoupler U1 is connected to the positive power supply through a resistor R2, a pin 2 is an input interface IN6+ of the external switching value signal, and an input interface 6 of the external switching value signal is connected to the ground, and an interface 6 of the TVS 6+ of the external switching value signal is connected to the input interface 6 of the TVS 6.
The circuit principle of the optical coupler U2 is the same as that of the optical coupler U1.
The photoelectric isolation circuit comprises two paths of photoelectric isolators, the type of each photoelectric isolator is TLP521-1, and the output end of each path of photoelectric isolator is provided with a TVS isolation circuit.
IN this embodiment, the box opening sensor is a door magnetic switch, and an output end of the door magnetic switch is connected to the input interface IN6+ of the external switching value signal and the input interface IN6+ of the external switching value signal, and the switching value information number generated by the door magnetic switch is isolated by the optocoupler U1 and then input to the second controller for further program judgment.
The optical coupler U2 is used for isolating the switching value signal generated by the auxiliary contact of the external alternating current contactor.
The utility model discloses a connect the mode of connecting two TVS pipes at the input of opto-coupler, strengthened the protection to switching value input interface.
During the use, door magnetic switch can set up on the cubical switchboard that dc-to-ac converter data acquisition device belonged to or the chamber door of collection flow box, is responsible for the control whether have the unpacking signal to can produce unpacking alarm information all the way.
The analog quantity acquisition unit comprises a primary filter, a sampling resistor, a secondary filter and an amplifier, wherein a 0-5V interface is connected with the primary filter, the primary filter is connected with the sampling resistor, the sampling resistor is connected with the secondary filter, the secondary filter is connected with the amplifier, and the amplifier is connected with the second controller.
The primary filter and the secondary filter are both RC filter circuits, the sampling resistor is a voltage sampling circuit formed by resistors, and the type of the amplifier is a SYSU1-P4-05 type isolation amplifier.
The utility model provides a 0-5V analog input interface all the way, can be nimble provide the analog quantity for the user and detect, improved the suitability.
The model of the second controller is MCIMX287, the model of the FLASH storage is W25Q16 JVSIQ, and the model of the RAM storage is DS1200 serial RAM storage chip.
In this embodiment, the MCIMX287 has a hundred mega network interface, and can directly perform internet communication with the outside, thereby saving chip cost.
The photovoltaic panel angle sensor is communicated with the second controller through a Modbus interface.
The photovoltaic panel angle sensor is in the type AKS-360-1-CA01-VK2-PM, and the AKS-360-1-CA01-VK2-PM is communicated with the second controller through a Modbus.
The utility model relates to an inverter data acquisition device, which solves the technical problems of providing a photovoltaic power station inverter data acquisition device with high integration degree and high expansibility, can intensively acquire the data of a photovoltaic inverter, comprises the voltage U, the current I, the active power P, the reactive power Q, the photovoltaic panel steering angle cos phi, the illumination intensity, the operation alarm, the temperature and other information of the inverter, increases the integration degree of the data acquisition device, adopts a 485 bus mode to acquire multi-point temperature and humidity information and illumination intensity information, has good expansibility, can increase or delete the number of sensors at any time, does not influence the actual data acquisition, has the function of case opening alarm, provides a camera shooting function, can play the anti-theft effect, has simple circuit structure and low price, the method is suitable for application sites needing multi-point deployment.
Claims (8)
1. An inverter data acquisition device characterized in that: the device comprises a video board and a collection board, wherein the video board comprises a first controller, a FLASH memory and a video collection module, and the FLASH memory and the video collection module are connected with the first controller;
the acquisition board comprises a second controller, a 0-5V interface, a temperature and humidity transmitter, a illuminance sensor, a 485 communication interface, two 485 communication circuits, an analog quantity acquisition unit, a photovoltaic board angle sensor, a photoelectric isolation circuit, an RAM (random access memory), a network interface and a box opening sensor, wherein the photovoltaic board angle sensor, the analog quantity acquisition unit, the two 485 communication circuits, the RAM memory, the network interface and the photoelectric isolation circuit are all electrically connected with the second controller, and a UART (universal asynchronous receiver/transmitter) interface of the first controller is communicated with the second controller;
the opening sensor and the auxiliary contact of the external alternating current contactor are connected with the photoelectric isolation circuit;
the two 485 communication circuits comprise two 485 modules, a temperature and humidity transmitter and a light intensity sensor are connected with one 485 module, and a 485 communication interface is connected with the other 485 module;
the analog quantity acquisition unit comprises a primary filter, a sampling resistor, a secondary filter and an amplifier, wherein a 0-5V interface is connected with the primary filter, the primary filter is connected with the sampling resistor, the sampling resistor is connected with the secondary filter, the secondary filter is connected with the amplifier, and the amplifier is connected with the second controller.
2. An inverter data acquisition device according to claim 1, wherein: the model of the first controller is C8051F330, the model of the second controller is MCIMX287, the model of the FLASH storage is W25Q16 JVSIQ, the model of the RAM storage is DS1200 serial RAM storage chip, the model of the video acquisition module is OV7670, and the video acquisition module is externally connected with a camera.
3. An inverter data acquisition device according to claim 1, wherein: the primary filter and the secondary filter are both RC filter circuits, the sampling resistor is a voltage sampling circuit formed by resistors, and the type of the amplifier is a SYSU1-P4-05 type isolation amplifier.
4. An inverter data acquisition device according to claim 1, wherein: the temperature and humidity transmitter and the illuminance sensor both adopt a 485 bus mode to transmit signals, the model of the temperature and humidity transmitter is MZIOT-WS, and the model of the illuminance sensor is 0-65535 Lux.
5. An inverter data acquisition device according to claim 1, wherein: and the photovoltaic panel angle sensor is communicated with the second controller by adopting a Modbus interface.
6. An inverter data acquisition device according to claim 5, wherein: the photovoltaic panel angle sensor is in the model of AKS-360-1-CA01-VK 2-PM.
7. An inverter data acquisition device according to claim 1, wherein: the photoelectric isolation circuit comprises two paths of photoelectric isolators, the type of each photoelectric isolator is TLP521-1, and the output end of each path of photoelectric isolator is provided with a TVS isolation circuit.
8. An inverter data acquisition device according to claim 1, wherein: the 485 communication interface is also provided with a ceramic gas discharge tube for protecting high-voltage signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221248379.4U CN217363017U (en) | 2022-05-23 | 2022-05-23 | Inverter data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221248379.4U CN217363017U (en) | 2022-05-23 | 2022-05-23 | Inverter data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217363017U true CN217363017U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221248379.4U Active CN217363017U (en) | 2022-05-23 | 2022-05-23 | Inverter data acquisition device |
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| Country | Link |
|---|---|
| CN (1) | CN217363017U (en) |
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- 2022-05-23 CN CN202221248379.4U patent/CN217363017U/en active Active
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