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Vehicle-mounted Beidou timing equipment based on FlexRay bus

A technology of Beidou time service and bus, which is applied in the field of satellite navigation and positioning and vehicle bus data communication, and achieves good practical value, simple structure and large data capacity

Active Publication Date: 2021-02-09
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such devices are still lacking in the prior art

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  • Vehicle-mounted Beidou timing equipment based on FlexRay bus

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Embodiment Construction

[0014] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 As shown, a vehicle-mounted Beidou time-control device based on the FlexRay bus is mainly composed of a Beidou timing and orientation module, a FlexRay bus communication control module, and two Beidou satellite navigation signal receiving antennas (main antenna and slave antenna respectively). in:

[0016] The main antenna and the slave antenna are arranged on the vehicle body according to the determined baseline, which are used to receive space Beidou navigation satellite signals, and output to the Beidou timing and orientation module after signal preconditioning;

[0017] The Beidou timing and orientation module respectively processes the Beidou satellite navigation signals from the main antenna and the slave antenna, and performs signal processing and data calculation, and completes Beidou ...

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Abstract

The invention discloses vehicle-mounted Beidou timing equipment based on a FlexRay bus, and relates to the technical field of satellite navigation positioning and vehicle-mounted bus data communication. The equipment comprises a Beidou time service orientation module, a FlexRay bus communication control module, a master Beidou satellite navigation signal receiving antenna and a slave Beidou satellite navigation signal receiving antenna. The antennas receive Beidou satellite navigation signals and send the Beidou satellite navigation signals to the Beidou time service orientation module, the Beidou time service orientation module performs signal processing and data calculation on the Beidou satellite navigation signals from the master antenna and the slave antenna, completes functions of time service, orientation, positioning and speed measurement and outputs corresponding coding information, and outputs 1PSS signals after time synchronization with a Beidou satellite navigation system,and the FlexRay bus communication control module encodes and frames the time service, orientation, positioning and speed measurement encoding information, outputs the encoded and framed information through a FlexRay bus, and outputs the 1PPS signals to other node equipment of the bus through shunt driving. According to the invention, larger data capacity, higher communication rate and safer and more reliable time service, orientation, positioning and speed measurement services can be provided.

Description

technical field [0001] The invention relates to the technical field of satellite navigation and positioning and vehicle-mounted bus data communication, in particular to a vehicle-mounted Beidou time system device based on the FlexRay bus. Background technique [0002] FlexRay supports multiple topological structures, has the characteristics of high speed, time determinism, channel fault-tolerant redundancy, etc., and can meet the bus data communication requirements of the vehicle-mounted control computer in a distributed structure. [0003] At present, Beidou timing and orientation technology is increasingly used in the automotive industry. Compared with CAN bus, FlexRay bus has faster data transmission rate, more flexible data communication mode, and more comprehensive topology selection and fault tolerance. However, such devices are still lacking in the prior art. Contents of the invention [0004] In view of this, the present invention proposes a vehicle-mounted Beido...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/03G04R20/02H04L12/40
CPCG01S19/03G04R20/02H04L12/40006H04L2012/40241H04L2012/40273
Inventor 刘市任练勇刘瑞杰刘盟超赵亚茹李柱岭
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP