Blocking device and method for onboard collision avoidance system

An airborne anti-collision system and locking device technology, which is applied in the field of aircraft avionics systems, can solve the problems that radio frequency signals do not meet the requirements of locking navigation, etc., and achieve the effect of improving the adaptability of installation and reducing radio frequency interference

Active Publication Date: 2017-05-10
四川九洲空管科技有限责任公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a locking device and method for an airborne collision avoidance system in view of the problems existing in the prior art, so as to solve the problem that the locking advance radio frequency signal output

Method used

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  • Blocking device and method for onboard collision avoidance system
  • Blocking device and method for onboard collision avoidance system
  • Blocking device and method for onboard collision avoidance system

Examples

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Embodiment

[0036] The invention provides a locking device for an airborne collision avoidance system, such as Figure 7 ~ Figure 10 As shown, the device includes: FPGA chip, used to receive and process input blocking signal and generate output blocking signal; amplifier circuit, used to amplify blocking signal; high-pass filter circuit, used to filter input blocking signal; step-down chip, used It is used to reduce the voltage of the input blocking signal; the isolation chip is used for level conversion between the step-down chip and the FPGA chip.

[0037] The amplifying circuit includes a resistor R109, a transistor Q1, a diode D62, a resistor R110, a resistor R111, a transistor Q2 and a diode D63. The resistor R109 is connected to the base of the transistor Q1. The collector of the transistor Q1 is connected to the base of the transistor Q2 through a resistor R110. The emitter of the transistor Q1 is grounded. The anode of the diode D62 is connected to the base of the transistor Q1...

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Abstract

The invention provides a blocking device and method for an onboard collision avoidance system. The blocking device mainly comprises an FPGA chip, an amplifying circuit, a high-pass filtering circuit, a voltage reducing chip and an isolating chip. The blocking method comprises the following steps: outputting an A/C mode blocking signal after an A/C mode or full-calling mode P3 triggering signal output by a collision avoidance system decoder is received; and if a full-calling mode P4 triggering signal output by a collision avoidance system decoder is received within a certain time range, stopping the continuous outputting of the A/C mode blocking signal, and otherwise, continuously outputting the A/C mode blocking signal. According the blocking device and the blocking method, the blocking lead output by the onboard collision avoidance system can be regulated according to the requirements, and a lag value of an output blocking signal can be regulated, so that the problem of blocking with other same-frequency band avionics subsystems such as navigation and radar alarms after the signal passes through blocking comprehensive crosslinking equipment of an avionics system is flexibly solved, the radio frequency interference is reduced, and the mounting adaptability of the equipment is improved.

Description

technical field [0001] The invention relates to the field of aircraft avionics systems, in particular to a locking device and method for an airborne collision avoidance system. Background technique [0002] The stability and reliability of aircraft avionics system are very important, and the anti-jamming performance of the system is an important indicator of system reliability. Avionics system equipment ranges from several MHz, dozens of MHz to GHz poles, and there are several subsystems in the same frequency band, which will generate a lot of radio frequency interference. Among them, the receiving frequency and transmitting frequency of the airborne collision avoidance system and the navigation, radar alarm and other subsystems are in the same frequency band, which will generate a lot of radio frequency interference. [0003] The A-mode interrogation signal of the airborne collision avoidance system is as follows: figure 1 shown. The C-mode interrogation signal of the ai...

Claims

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Application Information

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IPC IPC(8): G08G5/04
CPCG08G5/04
Inventor 段建军郭小杰吴俊邹亮
Owner 四川九洲空管科技有限责任公司
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