A brief discussion on the human-machine interaction scheme of household inverters

With the popularization and promotion of distributed power generation, more and more users are using it and it is gradually entering the homes of ordinary people. Therefore, for the only power generation equipment that users can face, how to make it intelligent and achieve friendly human-machine communication is particularly important. In particular, the dispersion of household machines is not convenient for manufacturers to maintain them centrally. How to grasp the real-time status of inverters is mostly installed under the eaves of the door outside the house or on the left and right sides of the wall. In order to understand the operating status of the machine, different display and communication methods will bring different machine experience to users. At present, there are two main solutions for human-machine interaction of photovoltaic inverters of mainstream manufacturers in China: LCD screen display and LED light status display.

Most inverter manufacturers on the market will use the LCD display solution, which can read data directly on the machine. It seems to be convenient, but there are many problems in actual application. First, the LCD screen is like a chicken rib for home users. In order to control costs, many manufacturers have basically castrated the display size and display functions, and it is also inconvenient for users to check the display screen (especially when these machines are hung very high or under certain light angles) to check the operating parameters of the machine. Second, the LCD display screen is vulnerable, and flower screen and black screen failures often occur. Third, the operation of the LCD display screen, especially some manufacturers' equipment requires some protective parameters to be set through the display screen, is obviously not so friendly for non-professional users.

The solution of simply using LED status lights to display can avoid the defects of the above LCD display solution, but because the data is not intuitive and can only reflect the equipment status but cannot provide more detailed equipment data, it cannot meet the needs of customers and EPCs in applications.

The SE series household photovoltaic inverter launched by Shengnengjie Technology provides users with a human-machine interaction solution of LED + mobile phone Bluetooth display, which solves the defects of the above two solutions very well. This solution can make the design of the inverter box more concise and generous, and only provides the operating status information of the equipment for general users. For professional users or EPC users who want to know the operating parameters of the inverter or specific fault information, customers can choose Bluetooth communication to view it through the mobile phone APP. The advantage of choosing Bluetooth communication is that even if the machine is not connected to the Internet, as long as the machine is powered on and Shengnengjie's mobile phone APP---SETouch is opened, the device can be quickly connected through the standard Bluetooth module, and the mobile phone screen becomes a display screen, and all data is clear at a glance. This solution is actually equivalent to moving the LCD display on the high-end machine to the mobile phone next to the customer, so that users have a better experience of reading inverter data, and at the same time can better ensure the reliable quality of the inverter.

Of course, in addition to Bluetooth communication display, Shengnengjie SE series inverters can also upload inverter data to the cloud through machine networking, and then view inverter parameter data and fault information through mobile phone APP, which is the same function provided by most manufacturers on the market. However, Shengnengjie inverters provide more abundant communication options, including GPRS, WiFi, Bluetooth, USB, RS485 and Ethernet, while most manufacturers generally only provide one or several of the above communication methods. Undoubtedly, Shengnengjie inverters provide users with more convenience and selectivity in communication connection.

Photovoltaic power generation has been around for a long time, and various manufacturers have been promoting the intelligence of inverters for a long time. Whether it is photovoltaic cloud or smart photovoltaic, only by truly going deep into the front-line users, going deep into the user base, and actively collecting user experience can we make truly friendly and intelligent products.