Abstract: An antenna board capable of transmitting and receiving millimeter wave signals is provided and the antenna board and a power board are respectively provided on both sides of a heat dissipation support, a radar interface terminal is configured to be electrically connected to the power board, and a housing is provided for accommodating and fixing components such as the power board, so that the millimeter wave car-reversing radar can not only penetrate components such as a bumper, and even if the millimeter wave car-reversing radar is mounted on a car frame, detection and car reversing and parking prompt reminding functions of the radar are likewise not affected.

Abstract: The millimeter-wave radar includes a radome, an antenna board, a metal middle frame, a main control board and a base which are sequentially arranged. An image acquisition module is provided on one side of the main control board facing the radome. The antenna board is provided with a radar transceiver control module and is electrically connected to the main control board. The metal middle frame is provided with a notch through which the image acquisition module passes. The radome is made of a material through which radar waves emitted by the antenna board can pass; the radome is connected to the base; the main control board, the antenna board and the metal middle frame are located in a space enclosed by the radome and the base; and the radome is provided with a through-hole which communicates with the notch so that the image acquisition module extends outside of the through-hole.

Abstract: A radar includes a housing, a first detection assembly, a second detection assembly and a connector, wherein a connection port is provided on the housing, and the connector is detachably mounted at the connection port. The first detection assembly includes a first antenna board and a first antenna mounted on the first antenna board, the first antenna is used for emitting a first millimeter wave with a first detection viewing angle. The second detection assembly includes a second antenna board and a second antenna mounted on the second antenna board, the second antenna is used for emitting a second millimeter wave with a second detection viewing angle. There is an intersection portion of emission regions of the first millimeter wave and the second millimeter wave, and a detection viewing angle after the first detection viewing angle and the second detection viewing angle are superimposed is greater than or equal to 180 degrees.

Abstract: The automobile millimeter-wave radar fixing device includes: a first clamping housing, the first clamping housing being U-shaped, and having one end provided with a first rotatable connection structure and the other end provided with a first fixed connection structure; a second clamping housing, the second clamping housing being U-shaped, and having one end provided with a second rotatable connection structure and the other end provided with a second fixed connection structure, the second rotatable connection structure being rotatably connected to the first rotatable connection structure, the second fixed connection structure being fixedly connected to the first fixed connection structure, and a clamping space being formed between the first clamping housing and the second clamping housing; and an angle adjusting support, fixed to the second clamping housing and used for fixing and adjusting an angle of a millimeter-wave radar.

Abstract: Electrode catalyst of carbon nitride nanotubes supported by platinum and ruthenium nanoparticles have been produced by a simple, rapid, effective and green process: taking use of the affinity of carbon nitride nanotubes to platinum and ruthenium atoms, Pt and Ru nanoparticles could be directly deposited on carbon nitride nanotubes by the reduction reaction, hereby avoiding the pre-activation or modification process needed by carbon nanotubes. The electrode catalysts produced in this way are suitable for proton exchange membrane fuel cells or direct methanol fuel cells, as well as other chemical reactions catalyzed by Pt and Ru.

Abstract: Electrode catalyst of carbon nitride nanotubes supported by platinum and ruthenium nanoparticles have been produced by a simple, rapid, effective and green process: taking use of the affinity of carbon nitride nanotubes to platinum and ruthenium atoms, Pt and Ru nanoparticles could be directly deposited on carbon nitride nanotubes by the reduction reaction, hereby avoiding the pre-activation or modification process needed by carbon nanotubes. The electrode catalysts produced in this way are suitable for proton exchange membrane fuel cells or direct methanol fuel cells, as well as other chemical reactions catalyzed by Pt and Ru.