CN103676875A - Wireless monitoring device of rooftop photovoltaic power station - Google Patents

Abstract

The invention discloses a wireless monitoring device for a rooftop photovoltaic power station, wherein the current and voltage acquisition module of the photovoltaic power station is responsible for collecting the current and voltage parameters of the photovoltaic power station, and sends them to the main control chip after conversion processing; the illuminance acquisition module is responsible for collecting the illumination parameters, processing Finally, the digital quantity of illuminance is sent to the main control chip, and the main control chip judges according to the intensity of illuminance. If the illuminance is lower than a preset value, it will enter the standby dormant state, otherwise it will enter the working state; the temperature and humidity acquisition module The temperature and humidity of the real-time working environment of the photovoltaic power station are collected and input to the main control chip; the indication circuit is used for communication signals and indications of the working state; the wireless communication module can realize the remote wireless communication function and exchange communication data with the main control chip; The wireless monitoring device for the rooftop photovoltaic power station described above can realize multi-parameter remote collection and transmission of the rooftop photovoltaic power station, and satisfy the real-time monitoring of the rooftop photovoltaic power station.

Description

Wireless monitoring device for rooftop photovoltaic power station

technical field

The invention relates to a monitoring device, in particular to a wireless monitoring device for a rooftop photovoltaic power station that can realize multi-parameter remote collection and transmission of a rooftop photovoltaic power station and satisfy real-time monitoring of the rooftop photovoltaic power station.

Background technique

With the continuous development of distributed photovoltaic power generation technology, there are more and more applications of rooftop photovoltaic power plants. As one of the important application forms of distributed power generation, rooftop photovoltaic power generation can make full use of the space on the roof and save land resources. At the same time, the generated electricity can be consumed locally, which has many advantages and will be widely promoted and applied in the future. Since rooftop photovoltaic power stations are scattered on each roof, it is difficult to implement traditional wired monitoring methods. For this reason, we have developed a roof that can realize multi-parameter remote acquisition and transmission of rooftop photovoltaic power stations and satisfy real-time monitoring of rooftop photovoltaic power stations. Photovoltaic power plant wireless monitoring device.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a wireless monitoring device for rooftop photovoltaic power stations that can realize multi-parameter remote collection and transmission of rooftop photovoltaic power stations and satisfy real-time monitoring of rooftop photovoltaic power stations. the

In order to achieve the above purpose, the technical solution adopted by the present invention is: a wireless monitoring device for a rooftop photovoltaic power station, including a main control chip, a photovoltaic power station current and voltage acquisition module, an illuminance acquisition module, a temperature and humidity acquisition module, a data storage chip, and a button setting input module , a display module, an indicating circuit, a real-time clock chip, and a wireless communication module; the input end of the current and voltage acquisition module of the photovoltaic power station is connected to the voltage and current sensor, and the output end is connected to the main control chip; the illuminance acquisition module, temperature and humidity acquisition module module, button setting input module, display module, indicating circuit, real-time clock chip, and wireless communication module are respectively connected with the main control chip; the current and voltage acquisition module of the photovoltaic power station is responsible for collecting the current and voltage parameters of the photovoltaic power station, and performing conversion processing After that, it is sent to the main control chip, and these parameters are called by the main control chip; the illumination acquisition module is responsible for collecting the illumination parameters, and after processing, the digital quantity of the illumination is sent to the main control chip, and the main control chip according to the strength of the illumination To judge, if the illuminance is lower than a certain preset value, it will enter the standby dormant state, otherwise it will enter the working state; the temperature and humidity acquisition module collects the real-time working environment temperature and humidity of the photovoltaic power station, and inputs it to the main control chip; The data storage chip is used to record key data and event logs processed by the main control chip, and can save key data when power is off; the key setting input module is used as a setting input unit for working parameters; the display module can display The current and voltage, illuminance, temperature and humidity, real-time time, and device working status information of the photovoltaic power station; the indicating circuit is used to indicate communication signals and working status; the real-time clock chip provides real-time time data for the main control chip; the wireless The communication module can realize the remote wireless communication function, and exchange communication data with the main control chip.

Preferably, the wireless monitoring device for the rooftop photovoltaic power station further includes a power module, and the power module provides a stable DC power supply for the entire device.

Preferably, the main control chip, data storage chip, real-time clock chip, indicating circuit, and wireless communication module are packaged in a closed main box; The acquisition module is encapsulated in another independent acquisition box, and connected to the main casing through the aviation connector of the shielded cable; the display module and the key setting input module are encapsulated in an independent man-machine interface box, and connected to the The waterproof connector of the line is connected with the main box body.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The wireless monitoring device of the roof photovoltaic power station described in the present invention has the acquisition function of the conventional parameters of voltage and current and environmental parameters such as illuminance, temperature and humidity, and has more complete functions, which can well meet the actual engineering requirements of the monitoring of the roof photovoltaic power station; at the same time, this scheme The wireless single-chip microcomputer MC13213 is used as the main control chip, which makes the volume of the device small; moreover, the scheme adopts a split structure, which is more flexible and convenient to use.

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the working principle diagram of the wireless monitoring device of roof photovoltaic power station of the present invention;

Figure 2 is a schematic diagram of a wireless monitoring device for a rooftop photovoltaic power station according to the present invention. the

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Accompanying drawing 1-2 is the wireless monitoring device of rooftop photovoltaic power station according to the present invention, comprises main control chip 1, photovoltaic power station current and voltage acquisition module 2, illuminance acquisition module 3, temperature and humidity acquisition module 4, data storage chip 5, key set fixed input module 6, display module 7, indicating circuit 8, real-time clock chip 9, wireless communication module 10 and power supply module 11; The control chip 1 is connected; the illuminance acquisition module 3, the temperature and humidity acquisition module 4, the key setting input module 6, the display module 7, the indicating circuit 8, the real-time clock chip 9, and the wireless communication module 10 are respectively connected with the main control chip 1 The current and voltage acquisition module 2 of the photovoltaic power station is responsible for collecting the current and voltage parameters of the photovoltaic power station, and after conversion processing, it is sent to the main control chip 1, and these parameters are called by the main control chip 1; the illuminance acquisition module 3 is responsible for Collect lighting parameters, and send the digital quantity of illuminance to the main control chip 1 after processing. The main control chip 1 judges according to the intensity of illuminance. If the illuminance is lower than a preset value, it will enter the standby sleep state, otherwise enter Working state; the temperature and humidity acquisition module 4 collects the real-time working environment temperature and humidity of the photovoltaic power station, and inputs it to the main control chip 1; the data storage chip 5 is used for recording key data and event logs processed by the main control chip 1 , key data can be saved when the system is powered off; the key setting input module 6 is used as a setting input unit for working parameters; the display module 7 can display the current and voltage of the photovoltaic power station, illuminance, temperature and humidity, real time, information such as device working status; the indication circuit 8 is mainly used as a communication signal and an indication of working status, and is composed of a light-emitting diode circuit; the wireless communication module 10 can realize a remote wireless communication function, and exchange communication data with the main control chip 1; The power supply module 11 provides a stable DC power supply for the whole device.

As shown in Figure 2, it is a schematic diagram of a wireless monitoring device for a rooftop photovoltaic power station according to the present invention; the wireless monitoring device for a rooftop photovoltaic power station includes a main box 100, an acquisition box 200 and a man-machine interface box 300; the described Main control chip 1, data storage chip 5, real-time clock chip 9, indicator circuit 8, wireless communication module 10 are housed in the main box 100; The indicating circuit 8 includes a green light-emitting diode 102 and a red light-emitting diode 103; the side of the main box 100 is provided with an aviation connector 104 and a waterproof connector 105; connected; the waterproof connector 105 is connected with the man-machine interface box 300; the acquisition box 200 includes the sensor part 201 of the temperature and humidity acquisition module 4, the photosensitive sensor 202 of the illuminance acquisition module 3, and the current and voltage acquisition module 2 of the photovoltaic power station Sensor terminal 205 and waterproof cover 204, the shielded cable 203 that is connected with main box 100; Described man-machine interface box 300, comprises the display screen 301 of display module 7, the button 304 of button setting input module 6 and the button 304 that is connected with main box 100 connected to the cable 303; when the device is working normally, the man-machine interface box 300 may not be connected to the main box 100, but only needs to connect the acquisition box 200 to the main box 100 to work. The man-machine interface box 300 is mainly used for the setting, monitoring and maintenance of parameters, and the split structure is used to facilitate the operation of the staff; the main control chip 1 adopts the wireless single-chip microcomputer MC13213 chip of Freescale Company; the described Data storage chip 5 adopts FM24C256 chip; Described real-time clock chip 9 adopts PCF8523 chip; Described indicator circuit 8 is made up of a red light-emitting diode and a green light-emitting diode, and displays the working state and communication state of the device respectively; The display module 7 is composed of a 128*64 character liquid crystal display circuit; the illuminance collection module 3 is composed of a BH1750FVI digital collection circuit; the temperature and humidity collection module 4 is composed of a digital temperature and humidity sensor DHT11 circuit; the wireless communication module 10 is composed of a power amplifier circuit and an antenna; the key setting input module is composed of 5 independent key circuits; the photovoltaic power station current and voltage acquisition module 2 is composed of an ACS712 current detection circuit and an optocoupler-based resistance divider isolation voltage detection circuit Composition; the power supply module 11 is a switching power supply circuit with wide voltage input, which provides a stable DC5V/3.3V device operating voltage.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The wireless monitoring device of the roof photovoltaic power station described in the present invention has the acquisition function of the conventional parameters of voltage and current and environmental parameters such as illuminance, temperature and humidity, and has more complete functions, which can well meet the actual engineering requirements of the monitoring of the roof photovoltaic power station; at the same time, this scheme The wireless single-chip microcomputer MC13213 is used as the main control chip, which makes the volume of the device small; moreover, the scheme adopts a split structure, which is more flexible and convenient to use. the

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (3)

1. The wireless monitoring device of the rooftop photovoltaic power station is characterized in that it includes a main control chip, a photovoltaic power station current and voltage acquisition module, an illuminance acquisition module, a temperature and humidity acquisition module, a data storage chip, a key setting input module, a display module, an indication circuit, Real-time clock chip, wireless communication module; the input end of the current and voltage acquisition module of the photovoltaic power station is connected to the voltage and current sensor, and the output end is connected to the main control chip; the illuminance acquisition module, temperature and humidity acquisition module, and key setting input module , a display module, an indicating circuit, a real-time clock chip, and a wireless communication module are respectively connected to the main control chip; the current and voltage acquisition module of the photovoltaic power station is responsible for collecting the current and voltage parameters of the photovoltaic power station, and after conversion processing, it is sent to the main control chip , these parameters are called by the main control chip; the illuminance acquisition module is responsible for collecting the illuminance parameters, and after processing, the digital quantity of the illuminance is sent to the main control chip, and the main control chip judges according to the intensity of the illuminance. A certain preset value, then enter the standby dormant state, otherwise enter the working state; the temperature and humidity acquisition module collects the real-time working environment temperature and humidity of the photovoltaic power station, and inputs it to the main control chip; the data storage chip is used for The key data processed by the control chip and the record of the event log can save the key data when the power is off; the key setting input module is used as the setting input unit of the working parameters; the display module can display the current voltage and illuminance of the photovoltaic power station , temperature and humidity, real-time time, device working status information; the indicating circuit is used for communication signal and working status indication; the real-time clock chip provides real-time time data for the main control chip; the wireless communication module can realize long-distance wireless communication Function, exchange communication data with the main control chip. 2. The wireless monitoring device for a rooftop photovoltaic power station according to claim 1, further comprising a power module that provides a stable DC power supply for the entire device. 3. The wireless monitoring device for rooftop photovoltaic power plants according to claim 1 or 2, characterized in that: the main control chip, data storage chip, real-time clock chip, indicating circuit, and wireless communication module are packaged in a closed main box The current and voltage acquisition module of the roof photovoltaic power station, the illuminance acquisition module, and the temperature and humidity acquisition module are packaged in another independent acquisition box, and are connected to the main housing through the aviation connector of the shielded cable; the display module and the key The setting input module is encapsulated in an independent man-machine interface box, and is connected to the main box through a waterproof connector connected with a cable.

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