Light intensity signal transmitting device based on high-speed LED array

A light intensity signal transmitting device based on an LED array, comprising the LED array and a control board card, wherein

• a transmission signal is pre-coded and then stored in a memory of the control board card as a pre-coded transmission signal, the LED array is connected with the control board card, the control board card outputs a control signal to a row control end and a column control end of the LED array, to output, in a one-time scanning mode, a pattern corresponding to the pre-coded transmission signal, thereby implementing transmission through light signals;
• a photodetector receives information transmitted by the LED array, when a number of LEDs in the LED array is 2n, any n-bit binary data from 0 to 2n LEDs can be transmitted, and signals output by the photodetector pass through an analog-to-digital converter to recognize a number of lightened LEDs, thereby realizing data transmission,
• wherein the LED array is controlled by row control lines and column control lines in a gating mode, a number of LEDs required to be lightened in the LED array is controlled in the one-time scanning mode, and response time of the LED array is equal to response time of a single LED,
• in an arrangement mode of the LED array, when a row with a largest number of LEDs with anodes connected together or LEDs with cathodes connected together is a central row, a number of LEDs with anodes connected together of LEDs with cathodes connected together in each row of other rows is gradually decreased to one towards an edge;
• and
• when a column with a largest number of LEDs with anodes connected together or LEDs with cathodes connected together is a central column, a number of LEDs with anodes connected together or LEDs with cathodes connected together in each column of other columns is gradually decreased to one towards an edge.