Abstract: Disclosed are a caffeic acid-based composite material and a preparation method thereof. The method includes: exposing a cyclodextrin metal-organic framework material prepared from ?-cyclodextrin to a solution of caffeic acid in a short-chain alcohol to obtain a mixed material; and incubating the mixed material, wherein during the incubating, the cyclodextrin metal-organic framework material is in dynamic contact with the solution of caffeic acid in a short-chain alcohol. The prepared composite material includes a cyclodextrin metal-organic framework material and caffeic acid loaded on the cyclodextrin metal-organic framework material, wherein the cyclodextrin metal-organic framework material is prepared from ?-cyclodextrin. The caffeic acid is loaded in an amount of 15-18% of a total mass of the caffeic acid-based composite material. The caffeic acid is located in a cavity of the cyclodextrin metal-organic framework material.

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: Methods, systems and computer devices are provided for adjusting a frame-listening cycle. The method includes: configuring, by a server, a fixed frame-listening cycle of an electronic shelf label according to a time period; and sending, by the server, a second frame-listening cycle modification command through a base station when the server is to issue the fast response service during the low power consumption time period, so that the electronic shelf label modifies the current frame-listening cycle to a fast frame-listening cycle according to the second frame-listening cycle modification command. According to the present disclosure, the electronic shelf label can not only respond to the fast response service in real time, but also keep the low power consumption of a long frame-listening cycle, thereby simultaneously satisfying the requirements of high real-time performance and low power consumption of the electronic shelf label.

Abstract: Methods, systems and computer devices are provided for adjusting a frame-listening cycle. The method includes: configuring, by a server, a fixed frame-listening cycle of an electronic shelf label according to a time period; and sending, by the server, a second frame-listening cycle modification command through a base station when the server is to issue the fast response service during the low power consumption time period, so that the electronic shelf label modifies the current frame-listening cycle to a fast frame-listening cycle according to the second frame-listening cycle modification command. According to the present disclosure, the electronic shelf label can not only respond to the fast response service in real time, but also keep the low power consumption of a long frame-listening cycle, thereby simultaneously satisfying the requirements of high real-time performance and low power consumption of the electronic shelf label.

Abstract: The present invention relates to an rapid inflating/deflating device used for a protective clothing and a smart protective clothing, the inflating/deflating device including: an outer cylinder provided with a first hole; an inner cylinder provided in the outer cylinder and provided with a second hole and being capable of sliding between a first position in which the second hole is aligned with the first hole and a second position in which the second hole is deviated from the first hole and is closed by the inner wall of the outer cylinder; a blade provided in the inner cylinder and a motor driving the blade; a biasing device for biasing the inner cylinder toward the first position; wherein the inner cylinder further comprises a third opening on which an one-way valve is provided so as to allow pressurized gas to flow one-way.

Abstract: The present invention relates to an rapid inflating/deflating device used for a protective clothing and a smart protective clothing, the inflating/deflating device including: an outer cylinder provided with a first hole; an inner cylinder provided in the outer cylinder and provided with a second hole and being capable of sliding between a first position in which the second hole is aligned with the first hole and a second position in which the second hole is deviated from the first hole and is closed by the inner wall of the outer cylinder; a blade provided in the inner cylinder and a motor driving the blade; a biasing device for biasing the inner cylinder toward the first position; wherein the inner cylinder further comprises a third opening on which an one-way valve is provided so as to allow pressurized gas to flow one-way.

Abstract: The invention provides a shell including a left portion and a right portion which are able to switch between a translation open state in which they are separated from each other by a distance and a closed state in which they are closed with each other, wherein in the translation open state, the left portion and the right portion are able to pivot relative to each other, wherein the shell also includes a locking mechanism and a separation bias device, wherein the locking mechanism is configured to keep the shell in the closed state and is able to be released so as to allow the shell to be placed in the translation open state, and wherein the separation bias device is configured to bias the left portion and the right portion toward the translation open state.

Abstract: The invention provides a shell including a left portion and a right portion which are able to switch between a translation open state in which they are separated from each other by a distance and a closed state in which they are closed with each other, wherein in the translation open state, the left portion and the right portion are able to pivot relative to each other, wherein the shell also includes a locking mechanism and a separation bias device, wherein the locking mechanism is configured to keep the shell in the closed state and is able to be released so as to allow the shell to be placed in the translation open state, and wherein the separation bias device is configured to bias the left portion and the right portion toward the translation open state.