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Method for automatically transceiving signals for integrated TCAS (traffic collision avoidance system)

An automatic sending and receiving and signal technology, applied in the direction of transmission system, electrical components, etc., can solve the problem of mismatching of the controller sending time encoder, etc., and achieve the effect of reliable sending and receiving

Inactive Publication Date: 2011-06-01
XIAN FEISIDA AUTOMATION ENG
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AI Technical Summary

Problems solved by technology

[0011] 2) Use the FIFO circuit to solve the problem that the sending time of the controller does not match the encoder;

Method used

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  • Method for automatically transceiving signals for integrated TCAS (traffic collision avoidance system)
  • Method for automatically transceiving signals for integrated TCAS (traffic collision avoidance system)
  • Method for automatically transceiving signals for integrated TCAS (traffic collision avoidance system)

Examples

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Embodiment Construction

[0027] The invention uses a piece of FPGA to complete the automatic sending and receiving function of signals. Its communication process is as image 3 shown.

[0028] For codec implementation, here is an example of "all-call answering in S mode". For the transmission of the all-call answering signal, it is divided into two parts, the transmitting circuit and the receiving circuit, in terms of the hardware structure. The transmitting part includes the original answering signal generation circuit, the encoding circuit, and the transmitting circuit; circuit, synchronous extraction circuit and decoding circuit. The realization model of the whole codec circuit is as follows: Figure 4 shown.

[0029] The TCAS controller needs to send the response information to the FPGA for encoding. Since the sending clock of the controller does not match the clock speed of the encoder, a FIFO circuit is used here for buffering; the head pulse generator uses the design method of a finite stat...

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Abstract

The invention discloses a method for automatically transceiving signals for an integrated TCAS (traffic collision avoidance system). Aiming at the defects of complex realization and more occupied resources in the traditional method for automatically transceiving signals, a large-scale FPGA (field programmable gate array) is used for improvement; FIFO (first in first out) is used to buffer original signals; an FSM (finite-state machine) is used to complete a head pulse generator; a coder is used to code data output by FIFO and the data is combined with a head pulse; a preprocessing circuit is used to process received signals, and the signals are reduced into standard signals by combining a threshold circuit with maximum value determination; and finally the signals are demodulated to obtain original data. The method disclosed by the invention can realize the function of transceiving signals stably and reliably, and lays a foundation for realization of the integrated TCAS.

Description

Technical field [0001] The invention relates to a small-sized airborne TCAS system automatic signal sending and receiving design, which belongs to the fields of air traffic management and air traffic safety. Background technique [0002] The anti-collision system on the aircraft, the American aviation system is called the air traffic warning and anti-collision system (hereinafter referred to as TCAS), and the European aviation system is called the airborne collision avoidance system. The meaning and function of the two are the same, and the composition is basically the same. Similar, therefore, the description of the application of the present invention is described with TCAS as the technical background. [0003] After years of development, TCAS system has developed a variety of models, such as: TCAS I, TCAS II, TCAS III, TCAS IV. Among them, TCAS II is currently the most widely used. It can provide aircraft pilots with traffic reminders (TA) that display information such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40
Inventor 史忠科李超
Owner XIAN FEISIDA AUTOMATION ENG
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