Control method for automatically heating liquid crystal screen in low-temperature environment

Abstract

The invention discloses a liquid crystal screen heating module used for automatically heating a liquid crystal screen in low-temperature environment and a temperature control method. The module comprises a liquid crystal screen module body, a liquid crystal screen heating module body, a temperature detection circuit and a main control module body; the liquid crystal screen module body is provided with an interface communicating with the main control module body, a temperature collecting sensor is arranged in the main control module body, and the heating control signal output pins are arranged on the main control module body; a liquid crystal screen heating circuit is connected with the heating control signal output pins, and heating ends of the liquid crystal screen heating circuit are distributed on the back face of a liquid crystal screen in the form of heating resistors distributed uniformly. The temperature sensor and the heating control pins arranged in a control chip cooperate with the heating circuit on the periphery to detect the low-temperature of the liquid crystal screen and heat the liquid crystal screen, the problem that the liquid crystal screen does not work normally in the low-temperature environment is solved, namely the liquid crystal screen heating module can work normally even in the environment at minus 50 DEG C.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a method capable of automatically heating and controlling a liquid crystal screen in a low-temperature environment. Background technique [0002] With the rapid development of my country's smart grid 2.0, various concentrators, load management control terminals, distribution transformer terminals and other automation equipment have been widely used. These devices integrate sensing measurement technology, communication technology, information technology, and control technology, and are equipped with LCD screens to display various information. [0003] At present, the commonly used liquid crystal screen is a room temperature screen, and its normal working range is -20°C to +70°C. In northern China, the winter temperature is relatively low, especially in Heilongjiang, Jilin, Inner Mongolia and other regions, where the lowest winter temperature reaches -42°C. The charac...

AI Technical Summary

Problems solved by technology

However, it is necessary to disassemble and modify the LCD display device to reduce the reliability of the LCD screen, and the process is relatively complicated

Images