Abstract: A human-machine interaction method for a storage device inside a refrigerator, and a refrigerator are provided. The storage device is arranged in a storage compartment of the refrigerator, and the storage device is provided with an operation panel. An operation surface of the operation panel is provided with a knob module having a display screen, and a touch-sensitive key module. The human-machine interaction method includes: acquiring a startup trigger signal of the operation panel; acquiring an operation instruction received by the knob module and/or the touch-sensitive key module; and making a response to the operation instruction according to a preset interaction solution, and driving the display screen to display a corresponding interface. A user can adjust the functions of the refrigerator through the knob module and the touch-sensitive key module simply and conveniently.

Abstract: An electronic shelf label positioning system, an electronic shelf label and a guide rail. The electronic shelf label positioning system includes the electronic shelf label, the guide rail, a PDA and a background server. The electronic shelf label includes a main control SoC, a card reader IC, a screen and a power supply device. The main control SoC is configured to control the screen display and to communicate with an AP. The power supply device is configured to supply power to the electronic shelf label. The guide rail includes a guide rail identification area and a label area. The label area is installed with a plurality of wireless labels each having a unique non-repeated ID number. The guide rail identification area is installed with an identity recognition device, which includes a guide rail ID consisting of the ID numbers of the wireless labels sequentially arranged and summarized.

Abstract: The present disclosure relates to a radar ranging system based on a true random generator and a ranging method thereof The present disclosure adopts the following technical scheme: the system comprises a radar signal modulation and transmission unit and a radar signal receiving and processing unit, wherein the radar signal modulation and transmission unit inputs and stores a true random binary sequence generated by the true random generator in a memory, and cyclically outputs the true random binary sequence to a BPSK modulator for phase modulation. The receiving and amplifying unit receives the reflected radar signal. The down-sampling unit down samples the intermediate frequency signal generated by the mixers. The data processing unit converts the sampled analog signal into a digital signal and cross-correlates the signal with the true random binary sequence in the memory, so as to obtain the distance to the object side to be measured.

Abstract: A human-machine interaction method for a storage device inside a refrigerator, and a refrigerator are provided. The storage device is arranged in a storage compartment of the refrigerator, and the storage device is provided with an operation panel. An operation surface of the operation panel is provided with a knob module having a display screen, and a touch-sensitive key module. The human-machine interaction method includes: acquiring a startup trigger signal of the operation panel; acquiring an operation instruction received by the knob module and/or the touch-sensitive key module; and making a response to the operation instruction according to a preset interaction solution, and driving the display screen to display a corresponding interface. A user can adjust the functions of the refrigerator through the knob module and the touch-sensitive key module simply and conveniently.