Method for realizing receiving completeness of telemeter data

A technology for telemetry data and integrity, applied in the field of aerospace control, to solve integrity problems, ensure integrity, and avoid the operation of switching interruptions

Active Publication Date: 2011-05-25
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The problem solved by the technology of the present invention is: to overcome the deficiencies of the prior art, provide a method for realizing the integrity of telemetry data reception, and solve the problem of ensuring the integrity of telemetry data in the asynchronous slow telemetry of fast-period changing data

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  • Method for realizing receiving completeness of telemeter data
  • Method for realizing receiving completeness of telemeter data
  • Method for realizing receiving completeness of telemeter data

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Embodiment Construction

[0015] In order to realize the integrity of the telemetry data in the asynchronous slow telemetry of the fast cycle changing data, the present invention uses the FPGA to provide the information of the current path count of the telemetry, and uses the processing logic of double buffering to realize the complete transmission of the telemetry data. The design principle of the present invention is: set up the telemetry frame flag bit TM_INT in the telemetry interrupt service program, can make the processing interruption time very short like this, inquire about the flag TM_INT in the telemetry interrupt service program and carry out the telemetry data packing, adjacent twice packing The telemetry data is stored in two temporary buffers set in the SRAM, and then according to the telemetry current path count TM_POINT, the packaged telemetry data temporarily stored in the two temporary buffers is filled into the dual-port RAM, and the FPGA detects effective telemetry frame synchronizati...

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Abstract

The invention discloses a method for realizing the receiving completeness of telemeter data, which is characterized in that: a telemeter frame marker bit TM_INT is arranged in a telemeter interrupt service routine, so the interrupt processing time is shorter, the marker TM_INT is inquired in the telemeter interrupt service routine, telemeter data package is proceeded, the telemeter data which is packaged at two adjacent times is stored in two temporary buffering areas which are arranged in Static Random Access Memory (SRAM), then the TM-POINT is counted according to the current telemeter path, the packaged telemeter data stored in the two temporary buffering areas are filled to a double-port random access memory (RAM), so the data completeness is guaranteed, and since the interrupt processing time is very short, the interrupt contradiction problem can be reduced, and the influence on the asynchronous communication of parts can be avoided; and meanwhile, relative to a relevant interrupt protection way, the method avoids the operation for frequently switching on and switching off the interrupt, so the complication of the system and the software time sequence can be reduced, and the completeness problem of the telemeter data can be solved.

Description

technical field [0001] The invention relates to a method for realizing the integrity of telemetry data reception, in particular to a method for realizing the integrity of telemetry data reception when the spacecraft control period is inconsistent with the telemetry period, and belongs to the field of aerospace control. Background technique [0002] The integrity requirements of telemetry data are the basis for data interpretation and analysis during spacecraft flight, and provide an important prerequisite for spacecraft flight control and operation and maintenance. At present, there are mainly two methods to realize the telemetry function in the mission of the spacecraft control system: (1) Pack and send the telemetry data by querying. This method is simple to implement and has no problems such as interrupt conflicts. However, if the control cycle is fast and the telemetry cycle is slow, all the data in each control cycle cannot be transmitted to the ground through telemetry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L12/56
Inventor 勾英杰刘波尚葳蕤谢琼张威泰林宇赵性颂王晶蔡彪张锦江
Owner BEIJING INST OF CONTROL ENG
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