CN110824961A - Method for selecting multiple data sources of main control device of ejection lifesaving system - Google Patents
Method for selecting multiple data sources of main control device of ejection lifesaving system Download PDFInfo
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- CN110824961A CN110824961A CN201911049669.9A CN201911049669A CN110824961A CN 110824961 A CN110824961 A CN 110824961A CN 201911049669 A CN201911049669 A CN 201911049669A CN 110824961 A CN110824961 A CN 110824961A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D25/00—Emergency apparatus or devices, not otherwise provided for
- B64D25/08—Ejecting or escaping means
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Abstract
The invention discloses a method for selecting multiple data sources of a main control device of an ejection life-saving system, which comprises the following steps: before the switch is started, the ejection lifesaving control device is connected with two external signal sources; comparing the recommendation factors of the two external data sources at intervals, and setting the smaller recommendation factor as the recommended external data source; if the signal of the external data source is continuously invalid, switching to receive the other path, continuously monitoring the signal of the path, and recovering receiving after the signal exists; if the external data source signal continuous system is recommended to report the fault, the other path is switched to receive, and the signal of the other path is not received any more; after the switch is started, the main control device is respectively connected with a main height signal and a height sensor signal, and the main height signal is preferentially used; and when the main height signal continuous signal is invalid, switching to use the height sensor signal. The processing, the identification and the selection of the multi-channel data source in the ejection process are realized, and the reliability and the overall safety are improved.
Description
Technical Field
The invention relates to a method for selecting multiple data sources of a main control device of an ejection life-saving system.
Background
The data source in the prior ejection lifesaving system mainly comprises an analog signal, usually the analog signal or the switch starting signal of a static pressure sensor, a differential pressure sensor and other components, the data source is simple due to the use of the analog signal, only the acquired signal needs to be sent to a main control device, but a processor of the main control device is required to have strong data processing capacity and is limited by the performance limitation of a sensor matched with a seat, and the processed data is not high in precision. Because the on-board signals are processed by more and more accurate sensors through the central processing unit, the accuracy and precision are higher, and therefore, the on-board signals and digital signals processed by other components are increasingly used in the design of new models. However, since more external signals are introduced, the reception, processing classification and selection of signals from different data sources become a difficult problem.
Taking data received by a main control device of the novel ejection life-saving system as an example: the digital signal processing method comprises the steps of receiving, analyzing, processing and storing different channel data and data sequencing, wherein the digital signals comprise complete data and attitude data sent by an external data source, height data sent by a main height signal source, height data of a height sensor and the like from various different sources, so that the data are conveniently used by a key ejection lifesaving function in a specific scene.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and provides a method for selecting multiple data sources of a main control device of an ejection lifesaving system, so that the processing, identification and selection of the multiple data sources in the ejection process are realized, and the reliability and the overall safety are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for selecting multiple data sources of a main control device of an ejection life-saving system comprises the following steps:
1) before the switch is started, after the ejection lifesaving control device is electrified and normally detected, the main control device of the ejection lifesaving control device is connected with two external signal sources, namely an external signal source A and an external signal source B;
2) the master control device compares the master and backup recommended factors of the external data source A with the master and backup recommended factors of the external data source B at intervals of a period of time t, and sets the smaller master and backup recommended factors as recommended external data sources;
3) if the recommended external data source signal is invalid for continuous ten frames, switching to receive another path of external data source signal, continuously monitoring the path of recommended external data source signal, and recovering receiving after the signal exists; if the continuous three-frame system failure reporting of the external data source signal is recommended, switching to receive another path of external data source signal, closing the receiving port of the path of external data source signal, and not receiving the path of external data source signal any more;
4) after the switch is started, the ejection lifesaving control device is respectively connected with a main height signal and a height sensor signal, and the main height signal is preferentially used;
5) the main control device receives the height signal in real time, and switches to use the height sensor signal when the main height signal is invalid due to continuous 'three-frame' signals.
According to the technical scheme, in the step 2), the time t is 50 s-70 s.
According to the above technical scheme, in the step 2), if neither of the two external signal sources has a master/slave recommendation factor or the master/slave recommendation factors of the two external signal sources are equal, the master control device receives data of the external data source a by default; and if only one path of effective precision recommendation factors exists in the two external signal sources, selecting to receive the path of external data source signals.
According to the above technical solution, in the step 3), if the signal of the other external data source is switched to be received, the "ten frames" are continuously invalid or the "three frames" are continuously reported, the external data source signal of the other external data source is continuously monitored, and the signal is continuously received when the signal is recovered.
According to the technical scheme, the main/standby recommended factors are not judged after ejection.
According to the technical scheme, in the step 5), the specific processing process that the main control device of the ejection lifesaving control device receives the height sensor signal in real time is as follows; the height sensor self-checks normally and obtains two height values, namely a height value H1And height value H2Calculating a height value H1And height value H2When the difference value △ H is within a certain range, the current real-time height Hgd is 1/2 (H)1+H2)。
The invention has the following beneficial effects:
the processing, the identification and the selection of multiple data sources in the ejection process are realized in the field of ejection lifesaving, the requirement of high reliability in the field of airborne lifesaving is met, and the overall safety is improved.
Drawings
FIG. 1 is a diagram illustrating a connection relationship between a master control device and signal sources according to an embodiment of the present invention;
fig. 2 is a flow chart of a method for selecting multiple data sources of a main control device of an ejection life-saving system in the embodiment of the invention;
FIG. 3 is a diagram illustrating a transition of a signal source selection state before ejection according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a transition of a signal source selection state after ejection according to an embodiment of the present invention;
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 2, the method for selecting multiple data sources of a master control device of an ejection life-saving system in one embodiment of the invention comprises the following steps:
1) before the switch is started, after the ejection lifesaving control device is electrified and normally detected, the main control device of the ejection lifesaving control device is connected with two external signal sources, namely an external signal source A and an external signal source B;
2) the master control device compares the master and backup recommended factors of the external data source A with the master and backup recommended factors of the external data source B at intervals of a period of time t, and sets the smaller master and backup recommended factors as recommended external data sources;
3) if the continuous 'N frames' of the signal of the recommended external data source is invalid, switching to receive another path of external data source signal, continuously monitoring the path of recommended external data source signal, and recovering receiving after the signal exists; if the recommended external data source signal is continuously reported as a fault by an M-frame system, switching to receive another path of external data source signal, closing a signal receiving port of the path of external data source signal, and not receiving the path of external data source signal any more;
4) after the switch is started, a main control device of the ejection lifesaving control device is respectively connected with a main height signal and a height sensor signal, and the main height signal is preferentially used;
5) the main control device receives the height signal in real time, and switches to use the height sensor signal when the main height signal is invalid due to continuous K frame signals.
Further, in the step 2), the time t is 50s to 70 s.
Further, in step 2), if neither of the two external signal sources has a master/slave recommendation factor or the master/slave recommendation factors of the two external signal sources are equal, the master control device receives data of the external data source a by default; and if only one path of effective precision recommendation factors exists in the two external signal sources, selecting to receive the path of external data source signals.
Further, in the step 3), if the signal is continuously invalid in "N frames" or continuously reported in "M frames" after the switching reception of the other external data source, the signal of the external data source is continuously monitored, and the signal is continuously received when the signal is recovered.
Further, the master/slave recommended factor is not judged after ejection.
Further, in the step 5), the main control device of the ejection lifesaving control device receives the specific processing of the signal of the height sensor in real timeThe process is as follows; the height sensor self-checks normally and simultaneously obtains two normal height values which are respectively a height value H1And height value H2Calculating a height value H1And height value H2When the difference value △ H is within a certain range, the current real-time height Hgd is 1/2 (H)1+H2)。
Further, the height sensor is a device for ejecting the lifesaving control device, and the main height signal is from the outside of the lifesaving control device.
Further, the master/slave recommended factor is data information contained in the signal, and a smaller value indicates a better signal.
Further, in the step 3), N is 8-12.
Further, in the step 3), M is 2-4.
Further, in the step 5), K is 2-4.
The working principle of the invention is as follows:
the invention provides a digital signal processing and classifying method, which comprises the following steps:
a) receiving a digital signal to be processed sent by a data sending end;
b) judging the integrity of the data packet of the digital signal to be processed;
c) calling a corresponding data processing module according to the type of the digital signal to process the data to be processed, and judging the validity and the rationality of the data;
d) determining the state condition of a data source;
e) and switching the data sources according to the use scene, the importance degree and the accuracy degree of the data sources.
The present invention also provides a data processing system, comprising:
a) the receiving unit is used for receiving the data to be processed sent by the data sending end;
b) the data source state judging unit is used for judging the state of the data source to be processed;
c) the processing unit is used for calling the corresponding data processing module to process the data to be processed;
d) and the switching unit is used for switching to use a proper data source according to the current scene requirement and the data source state.
The digital signal sources include: the functional components can transmit digital signals, such as complete data and attitude data transmitted by an external data source, height data transmitted by a main height signal, height data acquired by a height sensor and the like.
The data processing module comprises: the device comprises a data query and receiving module, a data packet integrity judging module, a data rationality judging module, a data validity judging module, a data source state setting module and a data source switching module.
The connection relationship between the ejection lifesaving control device and external data source signals, main height signals and height sensors is shown in figure 1.
The signal source selection state transition before the switch is started is shown in fig. 3:
a) after the ejection lifesaving control device is electrified and normally detected, an external data source A is set as a recommended external data source in a default mode;
b) and under the condition that the signal is effective and the main and standby recommending factors are effective, comparing the main and standby recommending factors of the external data source A and the external data source B at an interval of 60s, and setting the smaller main and standby recommending factor as the recommended external data source. If the master and backup recommendation factors are not available (or the master and backup recommendation factors are equal), data of the external data source A are received by default; and when only one path of effective precision recommendation factor exists, selecting to receive the external data source signal of the path. After ejection, the recommendation factor is not judged;
c) before the switch is started, when the continuous 'ten frames' of the recommended external data source is invalid, another external data source is switched to be received, signals of the external data source in the path are continuously monitored, and the receiving is recovered after the signals exist; when the continuous three-frame system failure reporting of the external data source is recommended, switching to receive data of another external data source, closing the signal receiving port of the external data source, and not receiving the signal of the external data source; the switched external data source signal is continuously invalid for ten frames or continuously reported for three frames, and the external data source signal of the path is continuously monitored and continuously received when the signal is recovered.
The signal source selection state transition after the switch is started is shown in fig. 4:
after the switch is activated, the height sensor signals are selected and used as follows:
1) the main height signal is preferentially used, and the ejection lifesaving control device receives the height signal in real time; when the main height signal is invalid in continuous three-frame signals or the system is invalid, the height sensor signal is switched to use;
2) the ejection lifesaving control device receives signals of the height sensor in real time; the height sensor self-checks normally and two height values are normal (H is used respectively)1、H2Express), calculate H1、H2When the difference value △ H is within a certain range, the current real-time height Hgd is 1/2 (H)1+H2)；
The use scenario of fig. 3 is that before the lifesaving seat is ejected, after a packet of complete data is received, an "external signal source a/B" is selected for receiving and using according to recommendation factors, data validity, whether a data source is faulty or not, whether a signal path is normal or not, and the like.
The usage scenario of fig. 4 is that after the lifesaving seat is ejected, a packet of complete data is received, and then "external signal source a/B", "main height signal", and "height sensor signal" are selected for receiving and using according to data validity, whether a data source is faulty, whether a signal path is normal, and the like.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (9)
1. A method for selecting multiple data sources of a main control device of an ejection life-saving system is characterized by comprising the following steps:
1) before the switch is started, after the ejection lifesaving control device is electrified and normally detected, the main control device is connected with two external signal sources, namely an external signal source A and an external signal source B;
2) the master control device compares the master and backup recommended factors of the external data source A with the master and backup recommended factors of the external data source B at intervals of a period of time t, and sets the smaller master and backup recommended factors as recommended external data sources;
3) if the continuous N frames of the signal of the recommended external data source are invalid, switching to receive another path of external data source, continuously monitoring the path of signal of the recommended external data source, and recovering receiving after the signal exists; if the recommended external data source signal is continuously reported as a fault by an M-frame system, switching to receive another path of external data source signal, closing a signal receiving port of the path of external data source signal, and not receiving the path of external data source signal any more;
4) after the switch is started, the ejection lifesaving control device is respectively connected with a main height signal and a height sensor signal, and the main height signal is preferentially used;
5) the ejection lifesaving control device receives the height signal in real time, and switches to use the height sensor signal when the main height signal is invalid due to continuous K frame signals.
2. The method for selecting the multiple data sources of the ejection lifesaving system main control device according to the claim 1, wherein in the step 2), the time t is 50 s-70 s.
3. The method for selecting the multiple data sources of the main control device of the ejection life-saving system of claim 1, wherein in the step 2), if neither of the two external signal sources has the master-slave recommended factor or the master-slave recommended factors of the two external signal sources are equal, the main control device receives the data of the external data source a by default; and if only one path of effective precision recommendation factors exists in the two external signal sources, selecting to receive the path of external data source signals.
4. The method for selecting multiple data sources of the main control device of the ejection life-saving system as claimed in claim 1, wherein in the step 3), if the system failure of "N frames" or "M frames" is continuously reported after the switching reception of another external data source, the signal of the external data source is continuously monitored, and the signal reception is continuously performed when the signal is recovered.
5. The method for selecting the multiple data sources of the main control device of the ejection life-saving system of claim 1, wherein the main and standby recommended factors are not judged after ejection.
6. The method for selecting the multiple data sources of the ejection lifesaving system main control device according to the claim 1, wherein in the step 5), the ejection lifesaving control device receives the height sensor signal in real time in a specific processing procedure; the height sensor self-checks normally and obtains two height values, namely a height value H1And height value H2Calculating a height value H1And height value H2When the difference value △ H is within a certain range, the current real-time height Hgd is 1/2 (H)1+H2)。
7. The method for selecting the multiple data sources of the ejection lifesaving system main control device according to the claim 1, wherein in the step 3), N is 8-12.
8. The method for selecting the multiple data sources of the ejection lifesaving system main control device according to the claim 1, wherein in the step 3), M is 2-4.
9. The method for selecting the multiple data sources of the ejection lifesaving system main control device according to the claim 1, wherein in the step 5), K is 2-4.
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2019
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| US5222695A (en) * | 1990-10-11 | 1993-06-29 | Martin-Baker Aircraft Company Limited | Ejection seat sequencer |
| CN101808011A (en) * | 2010-03-31 | 2010-08-18 | 许继集团有限公司 | Telemechanical channel automatic switching method |
| CN102393625A (en) * | 2010-04-30 | 2012-03-28 | 洛克威尔自动控制德国有限两合公司 | Single-channel safety output |
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