Photovoltaic power generation system voltmeter

Abstract

The invention discloses a photovoltaic power generation system voltmeter. According to key points, a stepping motor assembly, a pointer, a voltage preprocessing module and a panel are packaged in a space surrounded by a front frame, a middle frame and a rear cover; the built-in voltage preprocessing module can directly convert a voltage measuring value into stepping angle serial data needed by a digital pointer driving assembly; the built-in stepping motor assembly can convert the serial data into a deflection amount required for driving a rotating shaft of the pointer; meanwhile, the steppingmotor assembly can further upload currently indicated voltage data to a cloud data center through a Zigbee wireless local area network; the service life of the voltmeter can reach 30 years; the voltmeter is especially suitable for centralized patrol of a photovoltaic power generation system, a distributed wind power system and a local area internet of things; the unexpected effect is that the blank of a networked digital voltmeter is filled up; the voltmeter is especially suitable for digital indication of a network instrument and a high-end instrument; and the voltmeter is quite wide in application prospect.

Description

technical field [0001] The invention relates to a photovoltaic power generation system voltmeter, which is mainly used in the fields of new energy photovoltaic power generation systems, distributed wind power generation systems and industrial automation control. Background technique [0002] The new energy photovoltaic power generation system has a basic requirement, the power generation quality is guaranteed for 25 years, and the power generation decay rate is about 20% within 25 years. That is to say, the new energy photovoltaic power generation system should work for at least 25 years. Therefore, when it comes to the power core of the solar power generation system, that is, the solar module, its service life is required to be more than 25 years. As for the bracket system and the inverter, quality assurance is required. 5 years, after the warranty expires, it will be extended to 25 years. [0003] New energy photovoltaic power generation systems include grid-connected, of...

AI Technical Summary

Problems solved by technology

The voltmeter has a pointer voltmeter and an LCD digital display voltmeter. The LCD display has low power consumption and no radiation. The disadvantage is that the core component of the LCD display is composed of a liquid crystal layer, two upper and lower polarizers and a backlight assembly. The backlight assembly The main components are the backlight tube and the light guide plate. The life of the backlight tube is mainly determined by the life of the backlight tube. After a certain period of time, the backlight tube will naturally age, and the brightness will decrease accordingly. When the brightness of the lamp tube decays to The service time at 50% is defined as the lamp life

Therefore, the electromagnetic analog pointer watch is born with the disadvantages of fear of vibration, high failure rate, and low indication accuracy.

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