CN202614450U - Aircraft electric brake pressure transducer redundancy apparatus - Google Patents
Aircraft electric brake pressure transducer redundancy apparatus Download PDFInfo
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- CN202614450U CN202614450U CN 201220253672 CN201220253672U CN202614450U CN 202614450 U CN202614450 U CN 202614450U CN 201220253672 CN201220253672 CN 201220253672 CN 201220253672 U CN201220253672 U CN 201220253672U CN 202614450 U CN202614450 U CN 202614450U
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- pressure
- remaining
- pressure transducer
- redundancy
- brake pressure
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Abstract
The utility model discloses an aircraft electric brake pressure transducer redundancy apparatus. DDouble-redundancy pressure transducers acquire the braking pressure on the same point of an aircraft braked wheel to output two ways of braking pressure values, the two ways of braking pressure values are conditioned to voltage magnitudes capable of being identified by the AD port of a CPU by a conditioning circuit respectively, and the voltage magnitudes are filtered by a filter circuit respectively to be input to the CPU. The redundancy apparatus provided can improve the accuracy of the pressure transducer while the redundancy pressure transducers normally work; when one of the redundancy pressure transducers has a fault, the redundancy apparatus automatically detects the fault point and isolates the failed redundancy pressure transducer, and then the aircraft braking pressure is continuously monitored by the normal pressure transducer, thereby effectively improving the reliability of the aircraft electric brake pressure transducer.
Description
Technical field
The present invention relates to a kind of pressure transducer redundant apparatus, especially a kind of pressure transducer redundant apparatus that is used for the aircraft electric brake system.
Background technology
Aircraft electric brake pressure sensor systems is the important component part of aircraft electric brake system; Be mainly used in the real-time collection and the batch processing of aircraft brake pressure; Provide the important means of feedback brake pressure, the height of its reliability has influenced the safety of aircraft electric brake system and even whole aircraft system.
At present, what aircraft electric brake pressure sensor systems mainly adopted is the pressure transducer of single remaining, mainly is devoted to select the reliability of raising total system on the angle of power electronic devices and signal transmission and signal Processing of high-performance high reliability.The paper that the analogy roc of Northwestern Polytechnical University is delivered " research of Electrical Break System of Aircraft actuation mechanism and design " is exactly this technology of utilizing; And material and manufacturing process have limited the development of high-performance high reliability device; If will on signal transmission and signal Processing, improve reliability; Then will increase more complicated signal-processing board, the basic task reliability can reduce, and has increased financial cost.
Summary of the invention
In order to overcome the low deficiency of existing aircraft electric brake pressure transducer reliability; The invention provides a kind of aircraft electric brake pressure transducer redundant apparatus; Can be when remaining pressure transducer operate as normal, improve the precision of pressure transducer, when some remaining pressure sensor failures; Automatically detect the trouble spot; And, utilize normal pressure transducer to continue monitoring aircraft brake pressure with the isolation of fault remaining pressure transducer, effectively raise the reliability of aircraft electric brake pressure transducer.
The technical solution adopted for the present invention to solve the technical problems is: comprise CPU, filtering circuit, modulate circuit and two remaining pressure transducer.Wherein, two remaining pressure transducers are gathered the stopped brake pressure of identical point on the wheel of aircrafts, output two-way brake pressure value; Respectively through a modulate circuit; Nurse one's health into the magnitude of voltage that the AD port of CPU can be discerned, respectively through a filtering circuit filtering, input CPU.
When working, the present invention may further comprise the steps:
The first step: gather the two-way brake pressure value of feedback that aircraft is stopped identical point on the wheel.
Second step: whether the difference of judging two-way brake pressure value of feedback is greater than predetermined threshold value, if not then the comprehensive output of pressure equals two-way brake pressure value of feedback sum divided by two; If got into for the 3rd step.
The 3rd step: judge whether two-way brake pressure value of feedback all exceeds fault threshold, if not the comprehensive output of pressure equals not exceed the brake pressure value of feedback of fault threshold; If pressure comprehensively exports=and 0, plant failure reports an error.
The invention has the beneficial effects as follows: 1) adopt two remaining sensors, when two remaining normal operation of sensor, reduced sensor errors, improved the precision of sensor.2) when a remaining sensor fault, system can continue operate as normal, has improved the reliability of system.3) during the remaining sensor fault, corresponding trouble spot information is provided, safeguarding for device provides convenience.
Description of drawings
Fig. 1 is an aircraft electric brake pressure transducer redundant apparatus structural drawing.
Among the figure, 1-pressure transducer redundant control module CPU, 2-remaining, 1 filtering circuit, 3-remaining, 2 filtering circuits, 4-remaining, 1 modulate circuit, 5-remaining, 2 modulate circuits, 6-two remaining pressure transducers.
Fig. 2 is two remaining pressure sensor structure figure.
Among the figure, 7-remaining, 1 pressure transducer, 8-remaining, 2 pressure transducers.
Fig. 3 is an aircraft electric brake pressure transducer redundant apparatus control method.
Embodiment
Aircraft electric brake pressure transducer redundant apparatus and management method are on the theoretical foundation of original pressure sensor systems; When having selected two remaining high-performance pressure sensor, developed pressure acquisition and the signal processing method and the device of two remainings.Redundant apparatus high efficiency work simultaneously also can be excised the fault remaining automatically when single remaining breaks down, the collection and the processing of pressure signal are provided by the pressure transducer of another normal remaining.This invention has not only guaranteed the operate as normal of aircraft electric brake pressure sensor systems; Pressure signal collection and accuracy for processing have been improved; Also under the situation of system's generation catastrophic failure, a solution is provided; Be unlikely to because in the electric signal transmission course or the random failure of power electronic devices cause the total collapse of system, improved reliability, security and the maintainability of aircraft electric brake pressure sensor systems greatly.
The present invention includes CPU, remaining 1 filtering circuit, remaining 1 modulate circuit, remaining 2 filtering circuits, remaining 2 modulate circuits, two remaining pressure transducer.Wherein, Two remaining pressure transducers are gathered the stopped brake pressure of identical point on the wheel of aircrafts; Output two-way brake pressure value is passed through remaining 1 modulate circuit and remaining 2 modulate circuits respectively, nurses one's health into the magnitude of voltage that the AD port of CPU can be discerned; Through remaining 1 filtering circuit and remaining 2 filtering circuit filtering, import CPU respectively.
Pressure transducer is connected to the remaining 1 and remaining 2 modulate circuits of control system respectively.Control method is following:
The first step: remaining 1 pressure feedback value and remaining 2 pressure feedback values are gathered.Got into for second step.
Second step: whether the absolute value of difference of judging remaining 1 pressure feedback value and remaining 2 pressure feedback values is greater than predetermined threshold value, if not then pressure is comprehensively exported=(remaining 1 pressure feedback value+remaining 2 pressure feedback values)/2; If got into for the 3rd step.
The 3rd step: judge remaining 1 (2) pressure feedback value to exceed fault threshold and remaining 2 (1) pressure feedback values whether do not exceed fault threshold correct, if pressure is comprehensively exported=remaining 2 (1) pressure feedback values; If not pressure comprehensively exports=0, plant failure reports an error.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
As shown in Figure 1, the present invention includes pressure transducer redundant control module CPU1, remaining 1 filtering circuit 2, remaining 2 filtering circuits 3, remaining 1 modulate circuit 4, remaining 2 modulate circuits 5, two remaining pressure transducers 6.Wherein, Two remaining pressure transducers 6 are gathered the stopped brake pressure of identical point on the wheel of aircrafts; Output two-way brake pressure value is passed through remaining 1 modulate circuit 2 and remaining 2 modulate circuits 3 (amplifying as utilizing AD620) respectively, nurses one's health into the magnitude of voltage that the AD port of CPU can be discerned; Respectively through remaining 1 filtering circuit 4 and remaining 2 filtering circuits, 5 filtering (like second-order active filter), input pressure sensor redundant control module CPU1.
Two remaining pressure transducers are as shown in Figure 2, and 8 series connection constitute with remaining 2 pressure transducers by remaining 1 pressure transducer 7 for it, remaining each other, and electrical isolation each other.When a pressure transducer breaks down, but another pressure transducer operate as normal still.
As shown in Figure 3, be aircraft electric brake pressure transducer redundant apparatus control method.
The first step: remaining 1 pressure feedback value and remaining 2 pressure feedback values are gathered.Got into for second step.
Second step: whether the absolute value of difference of judging remaining 1 pressure feedback value and remaining 2 pressure feedback values is greater than predetermined threshold value (being 1000N in this model machine), if not then pressure is comprehensively exported=(remaining 1 pressure feedback value+remaining 2 pressure feedback values)/2; If got into for the 3rd step.
The 3rd step: judge remaining 1 (2) pressure feedback value to exceed fault threshold (in this model machine for 100N 1000N) and remaining 2 (1) pressure feedback values whether do not exceed fault threshold (being 100N 1000N in this model machine) correct; If pressure is comprehensively exported=remaining 2 (1) pressure feedback values; If not pressure comprehensively exports=0, plant failure reports an error.
Claims (1)
1. aircraft electric brake pressure transducer redundant apparatus; Comprise CPU, filtering circuit, modulate circuit and two remaining pressure transducer, it is characterized in that: two remaining pressure transducers are gathered the stopped brake pressure of identical point on the wheel of aircrafts, output two-way brake pressure value; Respectively through a modulate circuit; Nurse one's health into the magnitude of voltage that the AD port of CPU can be discerned, respectively through a filtering circuit filtering, input CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220253672 CN202614450U (en) | 2012-05-31 | 2012-05-31 | Aircraft electric brake pressure transducer redundancy apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220253672 CN202614450U (en) | 2012-05-31 | 2012-05-31 | Aircraft electric brake pressure transducer redundancy apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614450U true CN202614450U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220253672 Expired - Fee Related CN202614450U (en) | 2012-05-31 | 2012-05-31 | Aircraft electric brake pressure transducer redundancy apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706505A (en) * | 2012-05-31 | 2012-10-03 | 西北工业大学 | Redundancy device for aircraft electric brake pressure sensor and method for controlling redundancy device |
| CN107588886A (en) * | 2016-07-06 | 2018-01-16 | 北京空间技术研制试验中心 | Bimodulus atmospheric pressure measurement device |
| CN108871670A (en) * | 2018-07-09 | 2018-11-23 | 西北工业大学 | Electrical Break System of Aircraft pressure sensor failure detection method |
-
2012
- 2012-05-31 CN CN 201220253672 patent/CN202614450U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706505A (en) * | 2012-05-31 | 2012-10-03 | 西北工业大学 | Redundancy device for aircraft electric brake pressure sensor and method for controlling redundancy device |
| CN107588886A (en) * | 2016-07-06 | 2018-01-16 | 北京空间技术研制试验中心 | Bimodulus atmospheric pressure measurement device |
| CN108871670A (en) * | 2018-07-09 | 2018-11-23 | 西北工业大学 | Electrical Break System of Aircraft pressure sensor failure detection method |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150531 |
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| EXPY | Termination of patent right or utility model |