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Anti-rear-end collision warning device based on image recognition

A rear-end collision warning and image recognition technology, which is applied in connection devices, radiating element structures, waveguide devices, etc., can solve the problem of not having to send short messages, and achieve the effect of saving raw material costs and processing costs.

Inactive Publication Date: 2019-04-09
云彩虹
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, RNSS high-precision positioning antennas are mainly based on high-precision positioning, only for receiving RNSS navigation signals, using BD2-B3, BD2-B1, and GPS-L1 frequency bands, and do not have the ability to send short messages

Method used

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  • Anti-rear-end collision warning device based on image recognition
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  • Anti-rear-end collision warning device based on image recognition

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] refer to figure 1 , the present invention is formed by superimposing the upper, middle and lower layers of microstrip antennas and power splitter network towers. Divided into the upper layer S patch antenna 1, the second layer B1L patch antenna 2, the third layer B3 patch antenna 3 and the fourth layer power splitter network 4. Antenna frequency from high frequency to low frequency, from top to bottom. Therefore, the area of ​​the patch used becomes larger...

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Abstract

The invention relates to a Beidou navigation vehicle intelligent image recognition control system, and specifically discloses an anti-rear-end collision warning device based on image recognition, composed of circularly polarized antennas of different frequency bands with the frequencies stacked from bottom to top in a tower from low to high frequencies, wherein the upmost layer is an S patch antenna, the second layer is a B1L combined patch antenna, and the third layer is a B3 patch antenna; the upper layer selects a single-feed point center coaxial feed cutting angle to realize the circularlypolarized antenna, the middle layer selects a four-feed point coaxial feed mode to realize both positive and negative phase differences through a power distribution network, and the third layer usesfour-feed point feed to realize right-handed circular polarization of 0 degree, 90 degrees, 180 degrees and 270 degrees, which can not only meet the requirements of high-precision positioning functionof RNSS, but also realize the transmission and reception function of RDSS. This antenna adopts the micro-band antenna multi-feed point technology to improve the phase center stability of the antenna,so that the phase center error is + / -2mm, and the micro-strip patch antenna tower overlay technology is compatible with both RNSS navigation frequencies (BD2-B3, BD2-B1, and GPS-L1) and RDSS transceiver frequencies (BD-L and BD-S).

Description

technical field [0001] The invention relates to the field of antenna technology, and is applied to Beidou high-precision satellite radio navigation services and satellite radio measurement services, specifically a Beidou multi-band wide-beam circularly polarized antenna, which is suitable for BD2-B3, BD2-B1, GPS- GPS antenna for L1, BD-L, BD-S bands. Background technique [0002] At present, RNSS high-precision positioning antennas are mainly based on high-precision positioning, only for receiving RNSS navigation signals, using BD2-B3, BD2-B1, and GPS-L1 frequency bands, and do not have the ability to send short messages. In the navigation satellite and operation control application system of the satellite navigation system, both RNSS and RDSS services are integrated at the same time. The system can not only provide users with continuous positioning and speed measurement capabilities (so-called passive navigation and positioning), but also perform high-speed data transmissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01P5/12
CPCH01Q1/36H01P5/12H01Q1/50
Inventor 云彩虹
Owner 云彩虹
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