CN111426481A - Intelligent management system for use process of test run rack of high-altitude cabin of aircraft engine - Google Patents
Intelligent management system for use process of test run rack of high-altitude cabin of aircraft engine Download PDFInfo
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- G01M15/00—Testing of engines
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Abstract
The invention provides an intelligent management system for the use process of a test run rack of an aircraft engine high-altitude cabin, which comprises a sensor unit, a data collection module and a communication module, wherein the sensor unit is connected with the data receiving module through a bus, the input end of the communication module is connected with the data collection module through the bus, the output end of the communication module is connected with a test run management total system of the aircraft engine high-altitude cabin through an optical fiber, the sensor unit transmits collected process data to the data collection module through the bus, the data collection module carries out service life overrun alarm by comparing the accumulated service life of each parameter collected by a sensor with the preset service life, carries out overrun alarm of an instantaneous sampling state by comparing the instantaneous sampling value of each parameter collected by the sensor with the preset threshold value, and can more accurately and timely provide early warning prompt through real-time monitoring in two aspects, the fatigue risk of the test run rack is reduced, and the rack monitoring data support is provided for the test run of the high-altitude cabin of the aircraft engine.
Description
Technical Field
The invention relates to the technical field of aero-engines, in particular to an intelligent management system for an aero-engine high-altitude cabin test rack use process.
Background
The test bed frame of the high-altitude cabin of the aero-engine is indispensable test equipment in the process of an engine high-altitude simulation test, the aero-engine is arranged on the test bed frame in the process of the high-altitude simulation test, the engine needs to simulate the state change of the engine running from low altitude to high altitude flight in the high-altitude cabin, and is subjected to various load cycles in a large range in the running process, particularly the great changes of all thrust, heat radiation and vibration of the aero-engine in the states of the aero-engine from slow running to stress application, full stress flight and the like, the test bed frame is easy to generate fatigue, the test safety of the engine is seriously influenced, and therefore, an intelligent management system for the use process of the test bed frame of the high-altitude cabin of the aero-engine is necessarily.
Disclosure of Invention
In order to realize intelligent test run of an aeroengine high-altitude cabin test run rack, the invention provides an aeroengine high-altitude cabin test run rack use process intelligent management system, the aeroengine high-altitude cabin test run is provided with an aeroengine high-altitude cabin test run management total system, the use process intelligent management system needs to be matched with the management total system for use, the use process intelligent management system comprises a sensor unit, a data collection module and a communication module, the data collection module is integrated with a storage unit, the sensor unit is connected with the data collection module through a bus, the input end of the communication module is connected with the data collection module through the bus, the output end of the communication module is connected with the aeroengine high-altitude cabin test run management total system through an optical fiber, and the sensor unit transmits collected process data of each sensor to the data collection module through the bus;
the sensor unit comprises a vibration sensor, a temperature sensor, a stress sensor and a thrust conversion module, wherein the vibration sensor is used for acquiring vibration signals, the temperature sensor is used for acquiring temperature signals, the stress sensor is used for acquiring stress signals, and the thrust conversion module is used for acquiring thrust signals;
in one mode of operation, the data collection module, based on the initial sampling time and the end sampling time of the parameter i, the accumulated service life is obtained by calculating the accumulated working hour data, the history state data is obtained by comparing the accumulated service life with the preset service life, the obtained history state data is stored in a storage unit, the management main system reads the history state data stored in the storage unit through a communication module and judges whether service life overrun alarm prompting is carried out or not, wherein i is 1,2,3,4, i takes different values to respectively represent four different parameters of vibration, temperature, stress and thrust, the sensor corresponding to the vibration parameter is a vibration sensor, the sensor corresponding to the temperature parameter is a temperature sensor, the sensor corresponding to the stress parameter is a stress sensor, and the sensor corresponding to the thrust parameter is a thrust conversion module;
in one working mode, the data collection module receives the history data collected by the sensor of the parameter i channel according to the initial sampling time and the termination sampling time of the parameter i, packages the received history data, stores the packaged history data in the storage unit, and the management main system reads the packaged history data stored in the storage unit through the communication module;
under one working mode, the data collection module receives the history data collected by the sensor of the parameter i channel according to the initial sampling time and the end sampling time of the parameter i, and compares all the instantaneous sampling values of the parameter i
And a predetermined threshold value
The management main system reads the instantaneous sampling state data stored in the storage unit through the communication module and judges whether the overrun alarm prompt of the instantaneous sampling value is carried out or not, wherein j is 1,2, …, N and N represent the sampling number of the instantaneous sampling value;
the sensor unit is used for acquiring the process data of each sensor on the test stand of the high-altitude cabin of the aircraft engine, wherein the process data of each sensor comprises a vibration signal, a temperature signal, a stress signal and a thrust signal;
the data collection module is used for receiving the history data of each sensor and packaging the history data;
the data collection module is also used for comparing each instantaneous sampling value of the parameter i according to the received history data of each sensor
And a predetermined threshold value
Obtaining instantaneous sampling state data of the parameter i, and storing the instantaneous sampling state data in a storage unit;
the data collection module is further used for calculating the accumulated service life of the parameter i through accumulated work hour data according to the initial sampling time and the final sampling time of the parameter i, obtaining the history state data of the parameter i through comparison of the accumulated service life of the parameter i and the preset service life, and storing the obtained history state data of the parameter i in the storage unit;
the communication module is used for converting Ethernet into optical fiber communication, and then transmitting the process state data, the instantaneous sampling state data and the encapsulated process data of each parameter to the aeroengine high-altitude cabin test run management main system, the management main system judges whether to carry out the over-limit alarm prompt of the service life of the parameter i according to the process state data about the parameter i stored in the data collection module, and the management main system judges whether to carry out the over-limit alarm prompt of the instantaneous sampling value of the parameter i according to the instantaneous sampling state data about the parameter i stored in the data collection module.
The data collection module obtains the accumulated service life through calculation of accumulated work hour data according to the initial sampling time and the final sampling time of the parameter i, obtains the history state data through comparison of the accumulated service life and the preset service life, and the management main system judges whether to give an alarm or not according to the history state data, specifically comprising the following steps:
s1.1: when the test run rack of the high-altitude cabin of the aircraft engine works in test run, the initial sampling moment of a parameter i is set through a management total system
End of sampling time
And a predetermined life L of parameter ii；
S1.2: the sensor unit triggers a corresponding sensor to acquire history data according to the initial sampling time and the final sampling time of the parameter i, determines the sampling duration of the temperature sensor according to the temperature parameter, determines the sampling duration of the vibration sensor according to the vibration parameter, determines the sampling duration of the stress sensor according to the stress parameter, and determines the sampling duration of the thrust conversion module according to the thrust parameter;
s1.3: the data collection module calculates the accumulated service life of the parameter i by using the formula (1) to the formula (2) according to the initial sampling time and the final sampling time of the parameter i,
in the formula, TiRepresents the cumulative service life of the parameter i sampled n times,
represents the m-th sampling duration of the parameter i, n represents the total number of samplings of the parameter i,
indicating the starting sampling instant of the parameter i at the m-th sampling,
represents the end sampling time of the parameter i at the m-th sampling;
s1.4: comparing the cumulative service life T of the parameter iiAnd a predetermined life LiIf T isi≥LiThen the history status data of the parameter i is recorded as 1, if T isi＜LiIf yes, recording the history state data of the parameter i as 0;
s1.5: if the history state data of the parameter i read by the management total system is 0, the service life of the parameter i is represented as a normal state, and if the history state data of the parameter i read by the management total system is 1, the service life of the parameter i is represented as an overrun state, and the service life of the parameter i needs to be subjected to overrun alarm prompt.
The data collection module compares each instantaneous sampling value of the parameter i
And a predetermined threshold value
The instantaneous sampling state data of the parameter i is obtained, and the instantaneous sampling state data is specifically expressed as:
s2.1: when the test run rack of the high-altitude cabin of the aircraft engine works in test run, firstly, the preset threshold value of the parameter i is set through the management total system
S2.2: if the respective instantaneous sample value of the parameter i
All satisfy
Recording the instantaneous sampling state data of the parameter i as 0, if the jth instantaneous sampling value of the parameter i
Recording the instantaneous sampling state data of the parameter i as 1;
s2.3: if the instantaneous sampling state data of the parameter i read by the management total system is 0, the instantaneous sampling value of the parameter i is represented as a normal state, and if the instantaneous sampling state data of the parameter i read by the management total system is 1, the instantaneous sampling value of the parameter i exceeds a preset threshold value, and the parameter i needs to be subjected to overrun alarm prompt.
The invention has the beneficial effects that:
the invention provides an intelligent management system for the use process of an aeroengine high-altitude cabin test rack, which is characterized in that a temperature sensor, a vibration sensor, a stress sensor and a thrust conversion module are arranged on the test rack, and the process data of the test rack is collected in real time and uploaded to a management total system, so that on one hand, the service life of the test rack can be subjected to overrun early warning prompt, on the other hand, the instantaneous sampling value of the test rack can be subjected to overrun early warning prompt, and by monitoring the accumulated service life state and the instantaneous sampling state at the same time, the early warning prompt can be provided more accurately and timely, and the fatigue risk of the test rack is reduced;
in a third aspect, the data collection module of the present invention further provides encapsulation processing for the collected history data, which not only can reduce the error rate of data transmission, but also can effectively reduce the processing burden of the total management system;
therefore, the intelligent management system for the use process provided by the invention is used as an auxiliary management platform of the management total system, and provides monitoring data support in the aspect of a rack for test run of an aircraft engine high-altitude cabin.
Drawings
FIG. 1 is a system block diagram of an intelligent management system for the use process of an aeroengine high-altitude cabin test rack in the invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
As shown in fig. 1, an aeroengine high-altitude cabin test rack uses a history intelligent management system, the aeroengine high-altitude cabin test is equipped with an aeroengine high-altitude cabin test management total system, the use history intelligent management system needs to be matched with the management total system for use, the use history intelligent management system comprises a sensor unit, a data collection module and a communication module, the data collection module is integrated with a storage unit, the sensor unit is connected with the data collection module through a bus, the input end of the communication module is connected with the data collection module through a bus, the output end of the communication module is connected with the aeroengine high-altitude cabin test management total system through an optical fiber, and the sensor unit transmits collected history data of each sensor to the data collection module through a bus;
the sensor unit comprises a vibration sensor, a temperature sensor, a stress sensor and a thrust conversion module, wherein the vibration sensor is used for acquiring vibration signals, the temperature sensor is used for acquiring temperature signals, the stress sensor is used for acquiring stress signals, and the thrust conversion module is used for acquiring thrust signals;
in the embodiment, the vibration sensor adopts an accelerometer, the temperature sensor adopts a thermocouple, the stress sensor adopts a strain gauge, the thrust conversion module adopts a thrust balance, the model of a main control chip of the data collection module is XC7VH870T, the model of a local memory integrated in the data collection module is a three-star Flash memory K9K8G08U0D-PIB0, the data collection and the data transmission of each sensor are realized through a digital-to-analog conversion chip of the model AD9266, the model of a communication chip is MAX9205, Xilinx ISE14.7 is used in the programming environment of an XC7VH870T device, a VHD L is used in a programming language to realize the basic function, and the XC7VH870T device has the advantages of good real-time data processing and parallel processing, so that the data transmission delay can be greatly reduced.
In one mode of operation, the data collection module, based on the initial sampling time and the end sampling time of the parameter i, the accumulated service life is obtained by calculating the accumulated working hour data, the history state data is obtained by comparing the accumulated service life with the preset service life, the obtained history state data is stored in a storage unit, the management main system reads the history state data stored in the storage unit through a communication module and judges whether service life overrun alarm prompting is carried out or not, wherein i is 1,2,3,4, i takes different values to respectively represent four different parameters of vibration, temperature, stress and thrust, the sensor corresponding to the vibration parameter is a vibration sensor, the sensor corresponding to the temperature parameter is a temperature sensor, the sensor corresponding to the stress parameter is a stress sensor, and the sensor corresponding to the thrust parameter is a thrust conversion module;
the data collection module obtains the accumulated service life through calculation of accumulated work hour data according to the initial sampling time and the final sampling time of the parameter i, obtains the history state data through comparison of the accumulated service life and the preset service life, and the management main system judges whether to give an alarm or not according to the history state data, specifically comprising the following steps:
s1.1: when the test run rack of the high-altitude cabin of the aircraft engine works in test run, the initial sampling moment of a parameter i is set through a management total system
End of sampling time
And a predetermined life L of parameter ii；
S1.2: the sensor unit triggers a corresponding sensor to acquire history data according to the initial sampling time and the final sampling time of the parameter i, determines the sampling duration of the temperature sensor according to the temperature parameter, determines the sampling duration of the vibration sensor according to the vibration parameter, determines the sampling duration of the stress sensor according to the stress parameter, and determines the sampling duration of the thrust conversion module according to the thrust parameter;
s1.3: the data collection module calculates the accumulated service life of the parameter i by using the formula (1) to the formula (2) according to the initial sampling time and the final sampling time of the parameter i,
in the formula, TiRepresents the cumulative service life of the parameter i sampled n times,
represents the m-th sampling duration of the parameter i, n represents the total number of samplings of the parameter i,
indicating the starting sampling instant of the parameter i at the m-th sampling,
represents the end sampling time of the parameter i at the m-th sampling;
s1.4: comparing the cumulative service life T of the parameter iiAnd a predetermined life LiIf T isi≥LiThen the history status data of the parameter i is recorded as 1, if T isi＜LiIf yes, recording the history state data of the parameter i as 0;
s1.5: if the history state data of the parameter i read by the management total system is 0, the service life of the parameter i is represented as a normal state, and if the history state data of the parameter i read by the management total system is 1, the service life of the parameter i is represented as an overrun state, and the service life of the parameter i needs to be subjected to overrun alarm prompt.
In one working mode, the data collection module receives the history data collected by the sensor of the parameter i channel according to the initial sampling time and the termination sampling time of the parameter i, packages the received history data, stores the packaged history data in the storage unit, and the management main system reads the packaged history data stored in the storage unit through the communication module;
under one working mode, the data collection module receives the history data collected by the sensor of the parameter i channel according to the initial sampling time and the end sampling time of the parameter i, and compares all the instantaneous sampling values of the parameter i
And a predetermined threshold value
Obtaining instantaneous sampling state data of the parameter i, and obtaining the instantaneous sampling state dataThe management main system reads the instantaneous sampling state data stored in the storage unit through the communication module and judges whether the overrun alarm prompt of the instantaneous sampling value is carried out or not, wherein j is 1,2, …, N and N represent the sampling number of the instantaneous sampling value;
the data collection module compares each instantaneous sampling value of the parameter i
And a predetermined threshold value
The instantaneous sampling state data of the parameter i is obtained, and the instantaneous sampling state data is specifically expressed as:
s2.1: when the test run rack of the high-altitude cabin of the aircraft engine works in test run, firstly, the preset threshold value of the parameter i is set through the management total system
S2.2: if the respective instantaneous sample value of the parameter i
All satisfy
Recording the instantaneous sampling state data of the parameter i as 0, if the jth instantaneous sampling value of the parameter i
Recording the instantaneous sampling state data of the parameter i as 1;
s2.3: if the instantaneous sampling state data of the parameter i read by the management total system is 0, the instantaneous sampling value of the parameter i is represented as a normal state, and if the instantaneous sampling state data of the parameter i read by the management total system is 1, the instantaneous sampling value of the parameter i exceeds a preset threshold value, and the parameter i needs to be subjected to overrun alarm prompt.
The sensor unit is used for acquiring the process data of each sensor on the test stand of the high-altitude cabin of the aircraft engine, wherein the process data of each sensor comprises a vibration signal, a temperature signal, a stress signal and a thrust signal;
the data collection module is used for receiving the history data of each sensor and packaging the history data;
the data collection module is also used for comparing each instantaneous sampling value of the parameter i according to the received history data of each sensor
And a predetermined threshold value
Obtaining instantaneous sampling state data of the parameter i, and storing the instantaneous sampling state data in a storage unit;
the data collection module is further used for calculating the accumulated service life of the parameter i through accumulated work hour data according to the initial sampling time and the final sampling time of the parameter i, obtaining the history state data of the parameter i through comparison of the accumulated service life of the parameter i and the preset service life, and storing the history state data of the parameter i in the storage unit;
the communication module is used for converting Ethernet into optical fiber communication, and then transmitting the process state data, the instantaneous sampling state data and the encapsulated process data of each parameter to the aeroengine high-altitude cabin test run management main system, the management main system judges whether to carry out the over-limit alarm prompt of the service life of the parameter i according to the process state data about the parameter i stored in the data collection module, and the management main system judges whether to carry out the over-limit alarm prompt of the instantaneous sampling value of the parameter i according to the instantaneous sampling state data about the parameter i stored in the data collection module.
Claims (3)
1. An aeroengine high-altitude cabin test rack uses the course intelligent management system, the aeroengine high-altitude cabin test is equipped with the aeroengine high-altitude cabin test management total system, use the course intelligent management system and need to cooperate with the management total system to use, characterized by that, including sensor unit, data collection module and communication module, the said data collection module integrates the memory cell, the sensor unit couples to data collection module through the bus, the input end of the communication module couples to data collection module through the bus, the output end couples to aeroengine high-altitude cabin test management total system through the optic fibre, the sensor unit transmits the course data of each sensor gathered to the data collection module through the bus;
the sensor unit comprises a vibration sensor, a temperature sensor, a stress sensor and a thrust conversion module, wherein the vibration sensor is used for acquiring vibration signals, the temperature sensor is used for acquiring temperature signals, the stress sensor is used for acquiring stress signals, and the thrust conversion module is used for acquiring thrust signals;
in one mode of operation, the data collection module, based on the initial sampling time and the end sampling time of the parameter i, the accumulated service life is obtained by calculating the accumulated working hour data, the history state data is obtained by comparing the accumulated service life with the preset service life, the obtained history state data is stored in a storage unit, the management main system reads the history state data stored in the storage unit through a communication module and judges whether service life overrun alarm prompting is carried out or not, wherein i is 1,2,3,4, i takes different values to respectively represent four different parameters of vibration, temperature, stress and thrust, the sensor corresponding to the vibration parameter is a vibration sensor, the sensor corresponding to the temperature parameter is a temperature sensor, the sensor corresponding to the stress parameter is a stress sensor, and the sensor corresponding to the thrust parameter is a thrust conversion module;
in one working mode, the data collection module receives the history data collected by the sensor of the parameter i channel according to the initial sampling time and the termination sampling time of the parameter i, packages the received history data, stores the packaged history data in the storage unit, and the management main system reads the packaged history data stored in the storage unit through the communication module;
under one working mode, the data collection module receives the history data collected by the sensor of the parameter i channel according to the initial sampling time and the end sampling time of the parameter i, and compares all the instantaneous sampling values of the parameter i
And a predetermined threshold value
The management main system reads the instantaneous sampling state data stored in the storage unit through the communication module and judges whether the overrun alarm prompt of the instantaneous sampling value is carried out or not, wherein j is 1,2, …, N and N represent the sampling number of the instantaneous sampling value;
the sensor unit is used for acquiring the process data of each sensor on the test stand of the high-altitude cabin of the aircraft engine, wherein the process data of each sensor comprises a vibration signal, a temperature signal, a stress signal and a thrust signal;
the data collection module is used for receiving the history data of each sensor and packaging the history data;
the data collection module is also used for comparing each instantaneous sampling value of the parameter i according to the received history data of each sensor
And a predetermined threshold value
Obtaining instantaneous sampling state data of the parameter i, and storing the instantaneous sampling state data in a storage unit;
the data collection module is further used for calculating the accumulated service life of the parameter i through accumulated work hour data according to the initial sampling time and the final sampling time of the parameter i, obtaining the history state data of the parameter i through comparison of the accumulated service life of the parameter i and the preset service life, and storing the obtained history state data of the parameter i in the storage unit;
the communication module is used for converting Ethernet into optical fiber communication, and then transmitting the process state data, the instantaneous sampling state data and the encapsulated process data of each parameter to the aeroengine high-altitude cabin test run management main system, the management main system judges whether to carry out the over-limit alarm prompt of the service life of the parameter i according to the process state data about the parameter i stored in the data collection module, and the management main system judges whether to carry out the over-limit alarm prompt of the instantaneous sampling value of the parameter i according to the instantaneous sampling state data about the parameter i stored in the data collection module.
2. The intelligent management system for the use process of the test stand of the high-altitude cabin of the aircraft engine according to claim 1 is characterized in that the data collection module calculates the accumulated service life through accumulated working hour data according to the initial sampling time and the final sampling time of a parameter i, the process state data is obtained through comparison of the accumulated service life and the preset service life, and the management total system judges whether to give an alarm or not according to the process state data, and the management total system is specifically represented as follows:
s1.1: when the test run rack of the high-altitude cabin of the aircraft engine works in test run, the initial sampling moment of a parameter i is set through a management total system
End of sampling time
And a predetermined life L of parameter ii；
S1.2: the sensor unit triggers a corresponding sensor to acquire history data according to the initial sampling time and the final sampling time of the parameter i, determines the sampling duration of the temperature sensor according to the temperature parameter, determines the sampling duration of the vibration sensor according to the vibration parameter, determines the sampling duration of the stress sensor according to the stress parameter, and determines the sampling duration of the thrust conversion module according to the thrust parameter;
s1.3: the data collection module calculates the accumulated service life of the parameter i by using the formula (1) to the formula (2) according to the initial sampling time and the final sampling time of the parameter i,
in the formula, TiRepresents the cumulative service life of the parameter i sampled n times,
represents the m-th sampling duration of the parameter i, n represents the total number of samplings of the parameter i,
indicating the starting sampling instant of the parameter i at the m-th sampling,
represents the end sampling time of the parameter i at the m-th sampling;
s1.4: comparing the cumulative service life T of the parameter iiAnd a predetermined life LiIf T isi≥LiThen the history status data of the parameter i is recorded as 1, if T isi＜LiIf yes, recording the history state data of the parameter i as 0;
s1.5: if the history state data of the parameter i read by the management total system is 0, the service life of the parameter i is represented as a normal state, and if the history state data of the parameter i read by the management total system is 1, the service life of the parameter i is represented as an overrun state, and the service life of the parameter i needs to be subjected to overrun alarm prompt.
3. The intelligent management system for the use history of the test stand of the high-altitude cabin of the aircraft engine as claimed in claim 1, wherein the data collection module compares each instantaneous sampling value of the parameter i
And a predetermined threshold value
The instantaneous sampling state data of the parameter i is obtained, and the instantaneous sampling state data is specifically expressed as:
s2.1: when the test run rack of the high-altitude cabin of the aircraft engine works in test run, firstly, the preset threshold value of the parameter i is set through the management total system
S2.2: if the respective instantaneous sample value of the parameter i
All satisfy
Recording the instantaneous sampling state data of the parameter i as 0, if the jth instantaneous sampling value of the parameter i
Recording the instantaneous sampling state data of the parameter i as 1;
s2.3: if the instantaneous sampling state data of the parameter i read by the management total system is 0, the instantaneous sampling value of the parameter i is represented as a normal state, and if the instantaneous sampling state data of the parameter i read by the management total system is 1, the instantaneous sampling value of the parameter i exceeds a preset threshold value, and the parameter i needs to be subjected to overrun alarm prompt.
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