The analysis of the photoresistor should be analyzed from three situations, one is light, the other is no light, and the last one is the degree of light intensity. In general, we can pass Our special process produces some resistance products that are very sensitive to a particular wavelength range, but because our natural light and sunlight have a wide range of wavelengths, more or less affect our photoresistors or other photosensitive components. Usage.
But we also have corresponding improvement methods. Here I will introduce you to two methods:
The first point is that we can add an optical path to the photoresistor, because everyone knows that light travels through a straight line, so we can make some barriers to prevent the light from spreading. For example, lenses, filters, mirrors, Holes and so on.
The second point is that we can encode the signal of light. For the light signal from the light, we can encode or debug according to certain rules. In this case, our receiver can distinguish the signal according to the established rules. To make a selection.
These two points should be the two most widely used now, and the two most obvious methods nowadays. In fact, these are the most widely used on TVs in our homes. Http://