CN109353528A - A kind of impact detection sensor realized based on the safe method of discrimination of impact - Google Patents
A kind of impact detection sensor realized based on the safe method of discrimination of impact Download PDFInfo
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- CN109353528A CN109353528A CN201811053918.7A CN201811053918A CN109353528A CN 109353528 A CN109353528 A CN 109353528A CN 201811053918 A CN201811053918 A CN 201811053918A CN 109353528 A CN109353528 A CN 109353528A
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- China
- Prior art keywords
- impact
- acceleration
- detection sensor
- impact detection
- way
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
- B64D2045/0085—Devices for aircraft health monitoring, e.g. monitoring flutter or vibration
Abstract
The invention belongs to avionics fields, it discloses a kind of based on the impact detection sensor for impacting safe method of discrimination realization, including power module (1) and impact detection processing module (2), by the way of double nip redundancy+bis- votings, obtain the impact acceleration of three axial directions of aircraft, when impact acceleration is beyond acceleration rate threshold as defined in agreement and duration, discrete magnitude signal is exported.The present invention carries out dual judgement by using " double nip redundancy+bis- votings " mode, and to impact acceleration rate threshold and duration, product reliability and highly-safe；Simultaneously because two key parameters of impact acceleration threshold value and duration can be configured by software, the pendant that product can adapt to multi-model hits operating condition.
Description
Technical field
The invention belongs to avionics field, especially relate to a kind of based on impacting what safe method of discrimination was realized
Impact detection sensor.
Background technique
It holds winged task with space shuttle to increasingly sharpen, the frequency that aircraft classes accident occurs is higher and higher, to ensure to fly
Machine can be completed in a short time certain specific and crucial work when major accident (such as: crashing) occurs (as separation is closed
Button apparatus etc.), aircraft abnormality need to be detected and be judged.
Impact detection sensor is for perceiving and obtaining three axial impact acceleration of aircraft, when the change of discovery impact acceleration
Dissolve existing abnormal conditions and beyond defined threshold and it is lasting when, impact detection sensor export discrete magnitude signal, trigger and guarantee
Associate device can normally start work on machine.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of impacts that the logical safe method of discrimination of impact is realized to detect sensing
Device, for effectively identifying the shock in the case of aircraft surprisingly crashes, to guarantee that the key equipment of accident positioning can be opened normally
It starts building to make.
Technical solution:
It is a kind of to be visited based on the impact detection sensor for impacting safe method of discrimination realization, including power module (1) and impact
It surveys processing module (2), which is characterized in that by the way of double nip redundancy+bis- votings, the impact for obtaining three axial directions of aircraft adds
Speed exports discrete magnitude signal when impact acceleration is beyond acceleration rate threshold as defined in agreement and duration.
Impact detection processing module (2) includes MEMS acceleration transducer (3), processor (4), ADC (5), deposits
Reservoir (6), solid-state relay (7), interface driver (8), impact detection processing module (2), control analog-to-digital conversion by processor
Device carries out digital quantization and filtering to the output signal of MEMS acceleration transducer, reaches the acquisition purpose of impact signal, simultaneously
It is closed in conjunction with to impact acceleration rate threshold and the dual differentiation of duration to determine that interface driver (8) control solid-state relay (7)
The accurate output of impact discrete magnitude signal is realized in conjunction/disconnection.
The double nip redundancy specific implementation are as follows: after the impact data of bus interface acquisition are handled, differentiated all the way
Discrete magnitude exports all the way for driving, constitutes dual redundant relationship between the two, when only two-way is all effective, can be considered effectively to rush
Hit trigger signal.
Double votings specific implementation are as follows: two acceleration transducers are accessed in each road bus interface, processor is every
The data of two acceleration transducers of secondary acquisition are put to the vote judgement, using two data in a certain range as effectively differentiation
Foundation can quote single sensor failure.
The utility model has the advantages that impact detection sensor of the present invention, using " double nip redundancy+bis- votings " mode, and it is right
Impact acceleration threshold value and duration carry out dual judgement, product reliability and highly-safe；Simultaneously because impact acceleration
Two key parameters of threshold value and duration can be configured by software, and the pendant that product can adapt to multi-model hits operating condition.
Detailed description of the invention
Fig. 1 is impact detection sensor functional block diagram.
Fig. 2 is functional block diagram inside impact detection processing module.
Wherein, power module 1, impact detection processing module 2, MEMS acceleration transducer 3, processor 4, ADC5, storage
Device 6, solid-state relay 7, interface driver 8.
Specific embodiment
The impact detection sensor of the embodiment of the present invention is made of power module 1 and impact detection processing module 2, such as Fig. 1
It is shown.Its design principle is as follows:
Power module is mainly made of power input conditioning, filtering (+DC/DC), energy storage, power supply conversion with control section,
3.3V and 5V power supply needed for the 28V DC power supply of input is mainly converted into acceleration detection processing module, and provide one
Fixed energy storage provides standby power for impact detection processing module.
Impact detection processing module is mainly led to by digital MEMS acceleration transducer, HB6096 bus protocol device, RS422
Communication interface, solid-state relay, NAND FLASH and arm processor and associated peripheral circuits are constituted, and realize adopting for impact signal
The Digital output function of collection, judgement and storage and acceleration signal.Functional block diagram such as Fig. 2 inside impact detection processing module
Shown, wherein MEMS sensor 1 and MEMS sensor 2 are used to detect impact acceleration signal, mainly implement function such as:
By on-chip bus interface and MEMS acceleration transducer interface, adopting for three axial impact acceleration informations is realized
Collection, and realize voting judgement；
By on-chip bus interface and HB6096 protocol-driven device interface, it can be achieved that the reception and 1 of 2 road HB6096 data
The transmission (mainly sending 3-axis acceleration) of road HB6096 data；
By on-chip bus and NAND FLASH memory interface, with the impact acceleration data and calibration number of storage acquisition
According to convenient for the analysis of initial stage progress data, convenient for real impact acceleration change situation in analysis machine, clearly impact discrimination threshold
Applicability；
By on piece UART interface and outside RS422 driver interface, realizes the RS422 interface of 1 tunnel duplex, can be used for
Product maintenance (detection and software upgrading etc.)；
Product working status is obtained by I/O interface；
Discrete magnitude signal is exported by I/O Interface Controller relay.
Claims (4)
1. a kind of based on the impact detection sensor for impacting safe method of discrimination realization, including power module (1) and impact detection
Processing module (2), which is characterized in that by the way of double nip redundancy+bis- votings, the impact for obtaining three axial directions of aircraft accelerates
Degree exports discrete magnitude signal when impact acceleration is beyond acceleration rate threshold as defined in agreement and duration.
2. impact detection sensor according to claim 1, which is characterized in that the impact detects processing module (2)
Including MEMS acceleration transducer (3), processor (4), ADC (5), memory (6), solid-state relay (7), interface driver (8),
Impact detection processing module (2) controls analog-digital converter by processor and carries out to the output signal of MEMS acceleration transducer
Digital quantization and filtering reach the acquisition purpose of impact signal, in combination with pair to impact acceleration rate threshold and duration
Major punishment does not determine that interface driver (8) control solid-state relay (7) closure/disconnection, realizes the accurate defeated of impact discrete magnitude signal
Out.
3. impact detection sensor according to claim 1, which is characterized in that the double nip redundancy specific implementation
Are as follows: all the way the impact data of bus interface acquisition handled, differentiate after drive discrete magnitude output all the way, constitute between the two double
Redundancy relationship when only two-way is all effective, can be considered effectively to impact trigger signal.
4. impact detection sensor according to claim 1, which is characterized in that double votings specific implementation are as follows: every
Two acceleration transducers are accessed in bus interface all the way, processor acquires the data carry out table of two acceleration transducers every time
Certainly judge, using two data in a certain range as effective distinguishing rule, single sensor failure can be quoted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053918.7A CN109353528B (en) | 2018-09-11 | 2018-09-11 | Impact detection sensor realized based on impact safety discrimination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053918.7A CN109353528B (en) | 2018-09-11 | 2018-09-11 | Impact detection sensor realized based on impact safety discrimination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109353528A true CN109353528A (en) | 2019-02-19 |
| CN109353528B CN109353528B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811053918.7A Active CN109353528B (en) | 2018-09-11 | 2018-09-11 | Impact detection sensor realized based on impact safety discrimination method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2913504A1 (en) * | 2007-03-07 | 2008-09-12 | Airbus France Sas | Lightning impact detecting device for cargo aircraft, has induction sensor arranged with respect to electrically insulating structure such that sensor delivers signal when lightning arrester strips of structure carry lightning current |
| CN101281484A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | N module redundant voting system |
| CN101814046A (en) * | 2010-01-27 | 2010-08-25 | 清华大学 | Dual redundant bus synchronizing and voting circuit based on programmable device |
| CN106643716A (en) * | 2016-12-02 | 2017-05-10 | 中船重工西安东仪科工集团有限公司 | MEMS inertial measuring device with redundant signal acquisition strategy |
| CN107539488A (en) * | 2017-08-30 | 2018-01-05 | 陕西千山航空电子有限责任公司 | A kind of aircraft collision sensor and its application method |
| CN107764497A (en) * | 2017-09-13 | 2018-03-06 | 陕西千山航空电子有限责任公司 | A kind of shock loading wirelessly stores test device |
-
2018
- 2018-09-11 CN CN201811053918.7A patent/CN109353528B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2913504A1 (en) * | 2007-03-07 | 2008-09-12 | Airbus France Sas | Lightning impact detecting device for cargo aircraft, has induction sensor arranged with respect to electrically insulating structure such that sensor delivers signal when lightning arrester strips of structure carry lightning current |
| CN101281484A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | N module redundant voting system |
| CN101814046A (en) * | 2010-01-27 | 2010-08-25 | 清华大学 | Dual redundant bus synchronizing and voting circuit based on programmable device |
| CN106643716A (en) * | 2016-12-02 | 2017-05-10 | 中船重工西安东仪科工集团有限公司 | MEMS inertial measuring device with redundant signal acquisition strategy |
| CN107539488A (en) * | 2017-08-30 | 2018-01-05 | 陕西千山航空电子有限责任公司 | A kind of aircraft collision sensor and its application method |
| CN107764497A (en) * | 2017-09-13 | 2018-03-06 | 陕西千山航空电子有限责任公司 | A kind of shock loading wirelessly stores test device |
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| Publication number | Publication date |
|---|---|
| CN109353528B (en) | 2021-11-12 |
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