CN105137214A - Satellite bus data analysis system - Google Patents
Satellite bus data analysis system Download PDFInfo
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- CN105137214A CN105137214A CN201510350429.8A CN201510350429A CN105137214A CN 105137214 A CN105137214 A CN 105137214A CN 201510350429 A CN201510350429 A CN 201510350429A CN 105137214 A CN105137214 A CN 105137214A
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Abstract
A satellite bus data analysis system comprises a data collection and storage module and a bus data analysis module. The data collection and storage module is connected with a satellite electronic system via a bus, collects bus data, and transmits bus data frames to the data analysis module. The bus data analysis module receives and then stores the bus data frames transmitted by the data collection and storage module, determines the format of the data frames, and compares the bus data with interval type parameters, equivalent change type parameters and hopping type parameters to determine current bus data. Compared with the prior art, different types of intermediate data can be stored in real time, convenience is provided for searching in future, the collected bus data is analyzed in real time according to the parameter models, and thus, the reason of fault of satellite electronic system can be found more accurately and timely.
Description
Technical field
The present invention relates to ground test and the checking field of satellite system function, particularly a kind of satellite bus data analysis system.
Background technology
Satellite comprehensive testing refers to the detection of the property indices to satellite electron system, and its fundamental purpose finds all kinds of problem in satellite electron system by test, and take measures in time for the problem found, guarantees the quality of Satellite Product.Along with user constantly increases the requirement of satellite function, the complexity of satellite electron system also constantly increases, and it is also proposed higher requirement to the integration test level of satellite.
At present, satellite comprehensive testing mainly judges the various functions of satellite system, the correctness of performance index by the method analyzing the telemetry parameter under all kinds of operating modes that pass down of satellite.Due under reach ground satellite telemetry parameters can not contain all kinds of intermediate data in satellite system operational process completely, when causing system malfunctions, cannot the reason of promptly and accurately localizing faults.Therefore, satellite comprehensive testing needs the data of a kind of satellite bus data test analytic system to inside satellite real-time, interactive to monitor, to find some deep-seated problems of satellite system.
Summary of the invention
The technical matters that the present invention solves is: overcome the deficiencies in the prior art, provides a kind ofly directly to access satellite electron system to realize satellite bus data analysis system to interior data Real-time Collection and analysis by bus.
Technical solution of the present invention is: a kind of satellite bus data analysis system, comprises Data acquisition and storage module, bus data analysis module, wherein
Data acquisition and storage module, to be connected with each subsystem of satellite electron system by bus and to gather the bus data that each subsystem delivers to satellite bus, storing, then bus data is delivered to bus data analysis module to bus data;
Bus data analysis module, comprises bus data format analysis unit, bus data interpretation unit, bus data format analysis unit, the host-host protocol of Current bus data is obtained from outside, after receiving the bus data of Data acquisition and storage module transmission, use the data frame format comparison bus data that the host-host protocol of Current bus data is corresponding, if bus data does not meet data frame format corresponding to the host-host protocol of Current bus data, then export the analysis of Current bus data layout and do not pass through signal, the bus data continuing to receive the transmission of Data acquisition and storage module is compared, if bus data meets data frame format corresponding to the host-host protocol of Current bus data, then export the analysis of Current bus data layout and pass through signal, then Current bus data are delivered to bus data interpretation unit,
Bus data interpretation unit, judge the data model of its correspondence according to the subsystem of satellite electron system corresponding to Current bus data, the data frame length corresponding according to the host-host protocol of Current bus data divides Current bus data,
If Current bus data are interval type parameter, then the data in this bus data frame and the data the span obtained from outside and former frame bus data frame are contrasted, if the data in this bus data frame are arranged in span and with the data difference of former frame bus data frame in allowed band, then export the interpretation of Current bus Frame by signal, otherwise the interpretation of output Current bus Frame does not pass through signal;
If Current bus data are equivalent change type parameter, then the data in the data in Current bus Frame and former frame bus data frame are contrasted, if comparison result meets from equivalent change type parameter corresponding to the Current bus data of outside acquisition, then export the interpretation of Current bus Frame by signal, otherwise the interpretation of output Current bus Frame does not pass through signal; Described equivalent change type parameter comprises and increases progressively parameter model, decrement parameter model and loop parameter model, wherein, increasing progressively parameter model is that data in any bus data frame are always large than the data in adjacent previous bus data frame, decrement parameter model is that the data in any bus data frame are always little than the data in adjacent previous bus data frame, and datacycle shape parameter model is the data cyclical variation in bus data frame;
If Current bus data are saltus step shape parameter, then saltus step scope corresponding with the Current bus data obtained from outside with the variable quantity of the data in former frame bus data frame for the data in Current bus Frame is compared, if this variable quantity is positioned at saltus step scope corresponding to Current bus Frame, then export the interpretation of Current bus Frame by signal, otherwise the interpretation of output Current bus Frame does not pass through signal;
Described allowed band is for being not more than 10%.
The host-host protocol of described bus data comprises 1553b, CAN, RS485.
The frame originating point information of described bus data frame comprises host-host protocol, data frame length, the Frame School Affairs of bus data.
The present invention's advantage is compared with prior art:
(1) satellite bus data analysis system of the present invention, overcome traditional satellite test system or method in test process, lack defect to the real-time analysis of satellite electron internal system data, directly access satellite electron system by bus, achieve interior data Real-time Collection and analysis;
(2) satellite bus data analysis system of the present invention compared with prior art, all kinds of intermediate data information of real-time storage, is convenient to the later stage search with localizing faults reason;
(3) bus data of satellite bus data analysis system of the present invention to satellite electron internal system real-time, interactive is monitored, and can find the satellite electron system failure or problem in time, fast;
(4) satellite bus data analysis system of the present invention overcomes traditional uncurrent defect of satellite special test system, can according to the data protocol of satellite Integrated Electronic System, data layout, obtain the parameters of satellite bus data analysis system flexibly from the external world, meet different model test assignment demand.
Accompanying drawing explanation
Fig. 1 is a kind of satellite bus data analysis system of the present invention and on-board equipment interface diagram;
Fig. 2 is a kind of satellite bus data analysis system of the present invention workflow diagram.
Embodiment
The present invention proposes a kind of satellite bus data analysis system, the level one data bus of direct access satellite electron system, then according to the bus protocol of satellite, real time parsing goes out the Various types of data of satellite also according to the parameter model arranged in advance, real-time interpretation analysis is carried out to the data parsed, to note abnormalities also and alarm, wherein, the level one data bus message of satellite electron system comprises the Various types of data information such as whole star observing and controlling, the energy, control, thermal control, propelling, load, and the interactive quantity of data message per second is about 100KByte.Below in conjunction with accompanying drawing, the present invention will be further described, satellite bus data analysis system is connected with the one-level bus of satellite electron system by satellite system as shown in Figure 1, satellite bus data analysis system in the course of the work, in real time satellite electron internal system interaction data is gathered, interpretation, analysis.
(1) satellite bus data analysis system overall design
Present system is made up of Data acquisition and storage module, data analysis module two parts, and wherein, data acquisition module primary responsibility gathers all message stream data collections of satellite bus, and the real-time storage to the data collected.Data analysis module primary responsibility carries out real-time analysis to the data collected, and wherein mainly comprises bus data format analysis unit, bus data interpretation unit.
(2) bus data format analysis unit
Bus data analytic system in the course of the work, first Real-time Collection is carried out to all data mutual on each cycle bus, then analyze according to data pattern and data protocol (1553B bus data agreement), if data layout and agreement do not meet data pattern and the data protocol of current use, then report to the police, wherein, satellite system internal data is carried out alternately in units of message, in the message containing each subaddress information far putting terminal, the data content of data receiver formula and message, each terminal of far putting possesses 31 subaddressings, data receiver formula is divided into BC-RT pattern and RT-BC pattern.For different satellites, when using satellite bus analytic system, this system according to the application of concrete satellite, can pre-set each information such as message mode, messaging protocol of far putting null terminator Null address by man-machine interface.At satellite bus data analysis system in operational process, real-time analysis is carried out to information such as the data layout in bus, data protocols, if there is exception, then reports to the police.
(3) bus data interpretation unit
Bus data analytic system can be monitored the data in bus in real time, this system can arrange simultaneously be not more than 100 parameters, the range of normal value of each bus parameter sets by man-machine interface, system is in operational process, system is according to the parameter area arranged, the data of Real-time Collection are compared, if exceed the scope of Operation system setting, then reports to the police;
Bus data interpretation unit stores after receiving the bus data frame of Data acquisition and storage module transmission, when storing data and being greater than three frames, carry out data analysis, according to satellite data Speciality and application demand, satellite bus data analysis system can arrange 100 by prosecution parameter simultaneously, each parameter can select arbitrarily model I to carry out real-time analysis (can the parameter type corresponding according to Current bus data select), and 5 class models are as follows:
A) parameter interval model: such parameter (data in bus data frame) is all positioned in span (obtain from the external world, determined arbitrarily by human-computer interaction interface) and data arbitrarily in former and later two adjacent bus data frames are more or less the same in 10%.
B) increment type parameter model: in satellite data analytic process, such parameter carries out data variation according to certain rules, in the data gathered, X
n, X
n+1, X
n+2.If X
n+1-X
n> 0 and X
n+2-X
n+1> 0, the equivalent increment type model of this data fit, if do not met, then report to the police, wherein, N is positive integer.
C) decrescendo parameter model: such parameter carries out data variation according to certain rules, in the data gathered, X
n, X
n+1, X
n+2.If X
n+1-X
n< 0 and X
n+2-X
n+1< 0, the equivalent increment type model of this data fit, if do not met, then reports to the police.
D) datacycle shape parameter model: such parameter carries out data variation according to certain rules, in the data gathered, X
n, X
n+1, X
n+2.If X
n+1-X
n> N and X
n+2-X
n+1> N (different satellite, the numerical value of N is different, and N is arranged by man-machine interface) data be increased to 0xFF after zero (or initial value) again count then, then these data are cyclical patterns and pass through, if do not met, then report to the police.
E) abnormal saltus step model: this model is formulated mainly for the abnormal saltus step when the system failure of some telemetries; In the data gathered, X
n, X
n+1, X
n+2.If X
n+1-X
n> N and X
n+2-X
n+1< M (different satellite, the numerical value of N, M is different, and N is arranged by man-machine interface), then these data are normal, if do not met, then report to the police.
In use, user can according to the feature of parameter in concrete satellite, to each Selecting parameter data model and correlation parameter (such as N, M) for satellite bus data analysis system.Satellite bus data analysis system can carry out model analysis to the parameter chosen in real time.
(4) satellite bus analytic system workflow
The principle of work process flow diagram of satellite bus data analysis system as shown in Figure 2, first present system obtains parameter model corresponding to Current bus data by man-machine interface from outside, use the Data acquisition and storage module acquires bus data be connected with each subsystem of satellite electron system by bus, bus data is stored, and bus data is delivered to bus data analysis module and analyze.
Then, bus data format analysis unit in bus data analysis module obtains the host-host protocol of Current bus data from outside, after receiving the bus data of Data acquisition and storage module transmission, use the data frame format comparison bus data that the host-host protocol of Current bus data is corresponding, if bus data does not meet data frame format corresponding to the host-host protocol of Current bus data, then exporting the analysis of Current bus data layout not by signal reports to the police, and the bus data continuing to receive the transmission of Data acquisition and storage module is compared, if bus data meets data frame format corresponding to the host-host protocol of Current bus data, then export the analysis of Current bus data layout and pass through signal, then Current bus data are delivered to bus data interpretation unit and carry out interpretation.
Finally, the bus data interpretation unit in bus data analysis module judges the data model of its correspondence according to Current bus data, the data frame length corresponding according to the host-host protocol of Current bus data divides Current bus data:
If Current bus data are parameter interval model, then the data in this bus data frame and the data the span obtained from outside and former frame bus data frame are contrasted, if the data in this bus data frame are arranged in span and the difference of former frame bus data frame data is not more than 10%, then exporting Current bus Frame judges by signal, otherwise output Current bus Frame interpretation is reported to the police not by signal;
If Current bus is equivalent change type parameter model, then the data in bus data frame and the data the equivalent change type parameter model obtained from the external world and former frame bus data frame are contrasted, if the bus data in bus data frame meets equivalent change type parameter model, then export the interpretation of Current bus Frame by signal, otherwise export the interpretation of Current bus Frame not by signal and report to the police, described equivalent change type parameter model comprises and increases progressively parameter model, decrement parameter model and loop parameter model, wherein, increasing progressively parameter model is that data in any bus data frame are always large than the data in adjacent previous bus data frame, decrement parameter model is that the data in any bus data frame are always little than the data in adjacent previous bus data frame, datacycle shape parameter model is the data cyclical variation in bus data frame, such as, the variable quantity of the decrement parameter model obtained from the external world is 1, data in the first six Frame are 1, 3, 5, 9, 11, 13, if the 7th frame is 15, then this group data fit decrement parameter model, if the 7th frame is 16, then these group data do not meet decrement parameter model, data in the first six Frame are 1,3,5,1,3,5, if the 7th frame is 1, then this group data fit circular form parameter model, if the 7th frame be 3, these group data do not meet circular form parameter model,
If Current bus is abnormal saltus step model, then obtain from outside and the saltus step upper limit using Current bus data corresponding, saltus step lower limit, then by the data jump in bus data frame to the variable quantity of the data in its former frame bus data frame saltus step upper limit corresponding with the Current bus data obtained from outside, saltus step lower limit is compared, if this variable quantity is less than the saltus step upper limit corresponding to Current bus Frame and be greater than saltus step lower limit corresponding to Current bus Frame, then export the interpretation of Current bus Frame and pass through signal, otherwise exporting Current bus Frame interpretation not by signal reports to the police, such as, the saltus step upper limit obtaining abnormal saltus step model from the external world is 10, the saltus step upper limit is 1, data in the first six Frame are 1,3,6,10,15,21, if the 7th frame is 28, then abnormal saltus step model of this group data fit, if the 7th frame be 21 or 66, these group data do not meet abnormal saltus step model, the host-host protocol of bus data comprises 1553b, CAN, RS485, and the frame originating point information of bus data frame comprises the host-host protocol of bus data, data frame length, Frame School Affairs.
The content be not described in detail in instructions of the present invention belongs to the known technology of those skilled in the art.
Claims (4)
1. a satellite bus data analysis system, is characterized in that comprising Data acquisition and storage module, bus data analysis module, wherein
Data acquisition and storage module, to be connected with each subsystem of satellite electron system by bus and to gather the bus data that each subsystem delivers to satellite bus, storing, then bus data is delivered to bus data analysis module to bus data;
Bus data analysis module, comprises bus data format analysis unit, bus data interpretation unit, bus data format analysis unit, the host-host protocol of Current bus data is obtained from outside, after receiving the bus data of Data acquisition and storage module transmission, use the data frame format comparison bus data that the host-host protocol of Current bus data is corresponding, if bus data does not meet data frame format corresponding to the host-host protocol of Current bus data, then export the analysis of Current bus data layout and do not pass through signal, the bus data continuing to receive the transmission of Data acquisition and storage module is compared, if bus data meets data frame format corresponding to the host-host protocol of Current bus data, then export the analysis of Current bus data layout and pass through signal, then Current bus data are delivered to bus data interpretation unit,
Bus data interpretation unit, judge the data model of its correspondence according to the subsystem of satellite electron system corresponding to Current bus data, the data frame length corresponding according to the host-host protocol of Current bus data divides Current bus data,
If Current bus data are interval type parameter, then the data in this bus data frame and the data the span obtained from outside and former frame bus data frame are contrasted, if the data in this bus data frame are arranged in span and with the data difference of former frame bus data frame in allowed band, then export the interpretation of Current bus Frame by signal, otherwise the interpretation of output Current bus Frame does not pass through signal;
If Current bus data are equivalent change type parameter, then the data in the data in Current bus Frame and former frame bus data frame are contrasted, if comparison result meets from equivalent change type parameter corresponding to the Current bus data of outside acquisition, then export the interpretation of Current bus Frame by signal, otherwise the interpretation of output Current bus Frame does not pass through signal; Described equivalent change type parameter comprises and increases progressively parameter model, decrement parameter model and loop parameter model, wherein, increasing progressively parameter model is that data in any bus data frame are always large than the data in adjacent previous bus data frame, decrement parameter model is that the data in any bus data frame are always little than the data in adjacent previous bus data frame, and datacycle shape parameter model is the data cyclical variation in bus data frame;
If Current bus data are saltus step shape parameter, then saltus step scope corresponding with the Current bus data obtained from outside with the variable quantity of the data in former frame bus data frame for the data in Current bus Frame is compared, if this variable quantity is positioned at saltus step scope corresponding to Current bus Frame, then export the interpretation of Current bus Frame by signal, otherwise the interpretation of output Current bus Frame does not pass through signal.
2. a kind of satellite bus data analysis system according to claim 1, is characterized in that: described allowed band is for being not more than 10%.
3. a kind of satellite bus data analysis system according to claim 1 and 2, is characterized in that: the host-host protocol of described bus data comprises 1553b, CAN, RS485.
4. exercise question according to claim 1 and 2, is characterized in that: the frame originating point information of described bus data frame comprises the host-host protocol of bus data, data frame length, Frame School Affairs.
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