Video intercom demonstration in ICU based on T5L

神秘の宅叔

This DEMO is used to simulate two-screen or multi-screen video intercom in the ICU visiting scenario.

T5L performs real-time image acquisition on the digital camera OV2640 and voice signal acquisition on the I2S voice microphone. The first screen collects the above two kinds of data (voice + image), and then transmits the image and voice data to the second screen in real time through two 485 channels. Meanwhile, it receives the voice and image data transmitted from the second screen, then plays the voice with the loudspeaker and displays the image with DGUS.

At present, the display frame rate of 320 * 240 image intercepted at 800 * 600 resolution after transmission is 2-3 frames per second. The theory display frame rate at 800 * 600 resolution is 30 frames per second. This image concession processing is to ensure that the audio acquisition will not interrupt the image acquisition (we use a very small sampling period to ensure the sampling rate, at this time, when there is no frame reduction processing for the image, the image data will be lost in acquisition)

If more fluent video and voice acquisition is needed, FPGA or other methods can be added to realize isolated acquisition, so as to realize fluent voice intercom.

Appendix are DEMO videos, DGUS project and upgrade files. 51 code was subsequently opened.

Kernel version: T5L_UI_DGUS2_V30_191110 and above

Software version: DGUS Tool V7.595 and above

demonstration video: