CN209085663U - A kind of signal adapter suitable for aircraft - Google Patents
A kind of signal adapter suitable for aircraft Download PDFInfo
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- CN209085663U CN209085663U CN201821877394.9U CN201821877394U CN209085663U CN 209085663 U CN209085663 U CN 209085663U CN 201821877394 U CN201821877394 U CN 201821877394U CN 209085663 U CN209085663 U CN 209085663U
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Abstract
The utility model discloses a kind of signal adapters suitable for aircraft, including current Ratio signal processing module, vibration at high speed signal total amount conversion module, steering engine position and atmospheric temperature signal processing module, Yuan Feican channel switching module and digital control processing module；Pressure signal and oil temperature signal are by current Ratio signal processing module, the processing of digital control processing module；Vibration at high speed signal total amount conversion module includes vibration signals collecting mechanism, vibration signal interconnecting module, the first conditioning amplifying circuit and filter circuit；Vibration signals collecting mechanism acquires vibration signal, passes through the first conditioning amplifying circuit, filter circuit, the processing of digital control processing module；Steering engine position signal and atmospheric temperature signal are handled by steering engine position and atmospheric temperature signal processing module；Processed signal and the former ginseng channel signal that flies are forwarded to synthetical collection device.The utility model increases the accuracy and quantity of the signal of synthetical collection device acquisition.
Description
Technical field
The utility model relates to FDR system auxiliary products technical field more particularly to a kind of signal suitable for aircraft are suitable
Orchestration.
Background technique
Signal adapter suitable for aircraft is the auxiliary products of domestic FDR system, the signal adapter suitable for aircraft
Front end connects the various sensor signals of aircraft, and rear end connects synthetical collection device, be aircraft original signal and synthetical collection device it
Between bridge.
In the original signal of aircraft, main hydraulic pressure, redundant hydraulic pressure, auxiliary hydraulic pressure pressure, Left Hand Engine lubricating oil
Pressure, right motor oil pressure, retarder lubricating oil pressure, retarder oil temperature signal, airframe and engine luggine
Signal, steering engine position signal, atmospheric temperature signal etc. are all critically important, and main hydraulic pressure signal is by being set to main hydraulic system
First pressure gauge acquisition, redundant hydraulic pressure signal are acquired by being set to the second pressure gauge of redundant hydraulic pressure system；It is auxiliary
Hydraulic pressure signal is helped to acquire by being set to the third pressure gauge of auxiliary hydraulic pressure pressure system, it is sliding by being set to Left Hand Engine
4th pressure gauge of oil system acquires Left Hand Engine lubricating oil pressure signal, by the 5th pressure for being set to right engine oil system
Power table acquires right motor oil pressure signal, and it is sliding that the 6th pressure gauge by being set to retarder oil system acquires retarder
Oil pressure force signal, the oil temperature gauge by being set to retarder oil system acquire retarder oil temperature signal.Wherein, main
Hydraulic pressure, redundant hydraulic pressure, auxiliary hydraulic pressure pressure, Left Hand Engine lubricating oil pressure, right motor oil pressure signal are to hand over
Ratio signal is flowed, retarder oil temperature signal is direct current ratio signal.
First pressure gauge, second pressure gauge, third pressure gauge, the 4th pressure gauge, the 5th pressure gauge, the 6th pressure gauge, cunning
Oil temperature table is moving-iron type current ratio table, since the pointer of instrument is to be driven by movable magnet, and pointer travel is only
It is related with current ratio, so, as long as two wire frame current ratios are constant, pointer instruction does not also change when mains voltage variations, do not have
There is original reason error generation.But the actual current of two coils can not be collected in the winged actual Acquisition Circuit of ginseng,
The voltage of two o'clock can only be acquired, the voltage of this two o'clock is easy to be influenced and production principle error by mains fluctuations.
The steering engine position acquisition mould for acquiring steering engine position signal is provided in the original signal of aircraft, in aircraft
Block, and the processing system that the steering engine position signal that will acquire is sent in aircraft is handled, obtain longitudinally, laterally, vertically and
Always away from this four steering engine position signals of position, it is forwarded in pilot by the steering engine position terminal box in pilot.
For the aircraft of external import, original machine flies ginseng and falls behind, and does not acquire these pressure, temperature signal, does not also acquire respectively
Vibration signal in the middle part of front part of a body, body does not acquire the vibration signal of motor head, engine and retarder, not yet yet
Acquisition is longitudinally, laterally, vertically and always away from this four steering engine position signals of position and atmospheric temperature signal, and these pressure are believed
Number, there are original reason error and import aircrafts and domestic winged ginseng adaptation issues for temperature signal, cannot directly pass through synthetical collection device
Acquisition.
Utility model content
The purpose of the utility model is to provide a kind of signal adapters suitable for aircraft, increase multiple pressure, temperature
Signal, front part of a body, the vibration signal in the middle part of body, the vibration signal of motor head, engine and retarder, four road steering engines
Position signal and atmospheric temperature signal increase the accuracy and quantity of the signal of synthetical collection device acquisition.
The technical solution adopted in the utility model are as follows:
A kind of signal adapter suitable for aircraft, including current Ratio signal processing module, vibration at high speed signal total amount
Conversion module, the steering engine position that conditioning amplification is carried out to steering engine position signal and atmospheric temperature signal and atmospheric temperature signal processing
Module, Yuan Feican channel switching module, digital control processing module and power module；
The signal output end of the first input end connection first pressure gauge of the current Ratio signal processing module, electric current
The signal output end of the second input terminal connection second pressure gauge of ratio signal processing module, current Ratio signal processing module
Third input terminal connects the signal output end of third pressure gauge, the 4th input terminal connection the 4th of current Ratio signal processing module
The signal output end of pressure gauge, the 5th input terminal of current Ratio signal processing module connect the signal output of the 5th pressure gauge
It holds, the signal output end of the 6th input terminal the 6th pressure gauge of connection of current Ratio signal processing module, at current Ratio signal
Manage the signal output end of the 7th input terminal connection oil temperature gauge of module；The output end of current Ratio signal processing module connects
The current Ratio signal input terminal of digital control processing module；
The vibration at high speed signal total amount conversion module include vibration signals collecting mechanism, vibration signal interconnecting module,
First conditioning amplifying circuit and filter circuit；
The vibration signals collecting mechanism includes shaking for acquiring the one or three axis of front part of a body three-axial vibration signal
Dynamic sensor, for acquiring the two or three axis vibration sensor of three-axial vibration signal in the middle part of body, for acquiring engine before
Hold the first vibrating sensor of vibration signal, the second vibrating sensor for acquiring engine rear end vibration signal, for adopting
Collect the third vibrating sensor of vibration reducer signal；
One or three axis vibration sensor, the two or three axis vibration sensor, the first vibrating sensor, the second vibration pass
Sensor, third vibrating sensor output end respectively with the input terminal of vibration signal interconnecting module and the first conditioning amplifying circuit
Input terminal is connected, and the output end of the first conditioning amplifying circuit connects digital control processing module by filter circuit
Vibration signal input terminal, the vibration signal input terminal of the output end connection synthetical collection device of the vibration signal interconnecting module；
It sets the first input end connection pilot centered rudder seat in the plane of the steering engine position and atmospheric temperature signal processing module
The signal output end of terminal box；Second input terminal of steering engine position and atmospheric temperature signal processing module connects atmospheric temperature sensing
The signal output end of device；The output end of steering engine position and atmospheric temperature signal processing module is separately connected the steering engine of synthetical collection device
Position signal input terminal and atmospheric temperature signal input part；
The original flies the former winged ginseng channel signal output end of input terminal connection of ginseng channel switching module, and the channel Yuan Feican turns
The original of the output end connection synthetical collection device of connection module flies ginseng signal incoming end；
First signal input part of the signal output end connection synthetical collection device of the digital control processing module；
The power module is respectively current Ratio signal processing module, vibration at high speed signal total amount conversion module, rudder
Seat in the plane is set and atmospheric temperature signal processing module, Yuan Feican channel switching module and the power supply of digital control processing module.
The current Ratio signal processing module includes the second conditioning amplifying circuit and real available value conversion circuit；
The described second conditioning amplifying circuit include RC filter network, by the chip AD620SQ883 of signal condition amplification and
The peripheral circuit of chip AD620SQ883；
The RC filter network includes first resistor, second resistance, first capacitor, the second capacitor, third capacitor；Chip
The peripheral circuit of AD620SQ883 includes the 4th resistance, the 5th resistance, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th electricity
Hold；
The first resistor first end is directly as first pressure gauge, second pressure gauge, third pressure gauge, the 4th pressure
Table, the 5th pressure gauge, the exchange ratio signal input terminal of the 6th pressure gauge and oil temperature gauge direct current ratio signal input terminal；
The second resistance first end is directly as first pressure gauge, second pressure gauge, third pressure gauge, the 4th pressure gauge, the 5th
The DC power supply thermal compensation signal of pressure gauge, the AC power source thermal compensation signal input terminal of the 6th pressure gauge and oil temperature gauge inputs
End, 2 feet of the second end connection chip AD620SQ883 of first resistor, the second end of second resistance connect chip AD620SQ883
3 feet；The second capacitor is concatenated between the second end of first resistor and the second end of second resistance, the second end of first resistor passes through
The second end of first capacitor ground connection, second resistance passes through third capacity earth；
1 foot of chip AD620SQ883 passes sequentially through 8 feet of the 4th resistance, the 5th resistance connection chip AD620SQ883；
The 7 feet connection power module anode of chip AD620SQ883,4 feet of chip AD620SQ883 connect power module cathode, power supply
Module anode passes through the 4th capacitor, the 5th capacity earth respectively；Power module cathode passes through the 6th capacitor respectively, the 7th capacitor connects
Ground；6 feet of chip AD620SQ883 are the direct current ratio signal input terminal that output connects digital control processing module；
The real available value conversion circuit includes the outer of the chip AD637 and chip AD637 of realization RMS conversion
Circuit is enclosed, the peripheral circuit of the chip AD637 includes the 6th resistance, the 8th capacitor, the 9th capacitor, the tenth capacitor, the 11st
Capacitor, the 12nd capacitor；
1 foot, 3 feet, 4 feet of the chip AD637 are grounded respectively；5 feet of chip AD637 pass through the 6th resistance connection electricity
Source module anode, the 11 feet connection power module anode of chip AD637,11 feet of chip AD637 pass through the 8th capacitor in parallel
With the 9th capacity earth；10 feet of chip AD637 connect power module cathode, and 10 feet of chip AD637 pass through the in parallel the tenth
Capacitor and the 11st capacity earth；
13 feet of chip AD637 are 6 feet of input connection chip AD620SQ883；6 feet of chip AD637 concatenate 9 feet, core
For 8 feet of piece AD637 by 9 foot of the 12nd capacitance series, 9 feet of chip AD637 are that output connects digital control processing module
Exchange ratio signal input terminal.
The first conditioning amplifying circuit is identical as the second conditioning amplifying circuit.
The filter circuit uses MAX274 chip.
The steering engine position and atmospheric temperature signal processing module improves amplifying circuit, the third tune using third
It is identical as the second conditioning amplifying circuit to manage amplifying circuit.
The signal adapter suitable for aircraft further includes self-detection result display screen, the digital control processing mould
The input terminal of the self-detection result output end connection self-detection result display screen of block.
The power module includes electromagnetic interface filter, surge suppressor, for the 13rd capacitor of energy storage and the 14th electricity
Hold, DC/DC converter, diode, the DC power anode on the first input end connection aircraft of the electromagnetic interface filter, institute
Second input terminal of the electromagnetic interface filter stated connects aviation power supply power cathode, and the first input end of electromagnetic interface filter connects on aircraft
DC power cathode, the first output end of the electromagnetic interface filter passes through the first input that diode connects surge suppressor
End, the second output terminal of the electromagnetic interface filter connect the second input terminal of surge suppressor, electromagnetic interface filter by diode
Third output end ground connection, the surge suppressor the first output end connection DC/DC converter first input end, surge
Second input terminal of the second output terminal connection DC/DC converter of suppressor, the first output end of surge suppressor and second defeated
It is serially connected with the 13rd capacitor between outlet, is serially connected with the 14th between the first output end and second output terminal of DC/DC converter
Capacitor.
The digital control processing module includes A/D sampling module and data processing module, the input of A/D sampling module
Hold the input terminal as digital control processing module, the input terminal of the output end connection data processing module of A/D sampling module, institute
Output end of the output end for the data processing module stated as digital control processing module.
The signal adapter suitable for aircraft further includes cabinet, the current Ratio signal processing module, height
Fast vibration signal total amount conversion module, steering engine position and atmospheric temperature signal processing module, Yuan Feican channel switching module, number
Control processing module and power module are set in cabinet.
The utility model the utility model is handled by signal of the digital control processing module to acquisition, and electric current is arranged
Ratio signal processing module is increased to main hydraulic pressure, redundant hydraulic pressure, auxiliary hydraulic pressure pressure, Left Hand Engine lubricating oil pressure
Power, right motor oil pressure, retarder lubricating oil pressure, retarder oil temperature signal 7 channels current Ratio signal
Acquisition and to its original reason error correct and be adapted to, design conditioning amplifying circuit and divider eliminate due to supply voltage
The original reason error of fluctuation and generation, improves the acquisition precision of ac and dc current ratio signal, to improve synthetical collection
The precision of the ac and dc current ratio signal of device acquisition；By the way that vibration at high speed signal total amount conversion module is arranged, before acquiring body
Vibration signal in the middle part of portion, body does not acquire the vibration signal of motor head, engine and retarder yet, and will be a part of
It is forwarded to the high-speed sampling channel of synthetical collection device；Another part then amplifies conditioning, and will treated signal exports to
Synthetical collection device is given in output after digital control processing module carries out Integral Processing, solves the height of vibration signals collecting mechanism output
Frequency vibration acceleration signal cannot directly be integrated into the problem of collector low channel is acquired record；Believed by steering engine position
Number and atmospheric temperature signal processing module be that the 4 road steering engine position signals that will be inputted and atmospheric temperature signal carry out signal condition,
Become 0 ~ 10V d. c. voltage signal, 4 road steering engine position signals and atmospheric temperature signal is enable to be integrated into collector acquisition note
Record；The former ginseng signal converting module that flies is set by the former signal converting for flying ginseng channel to synthetical collection device, and increase multiple pressure,
Temperature signal, front part of a body, the vibration signal in the middle part of body, the vibration signal of motor head, engine and retarder, four tunnels
Steering engine position signal and atmospheric temperature signal, are modulated it, handle, and complete aircraft original signal and synthetical collection device
Between signal transmit modulation, increase synthetical collection device acquisition signal accuracy and quantity, thus be aircraft accident tune
It looks into, flight training quality evaluation, the offers such as engineering maintenance guarantee are more objective, accurately foundation.
Detailed description of the invention
Fig. 1 is the schematic block circuit diagram of the utility model；
Fig. 2 is the schematic block circuit diagram of the digital control processing module of the utility model；
Fig. 3 is the second conditioning amplification circuit diagram of the utility model；
Fig. 4 is the real available value conversion circuit figure of the utility model；
Fig. 5 is the direct current ratio signal processing circuit functional block diagram of the utility model；
Fig. 6 is the exchange ratio signal processing circuit functional block diagram of the utility model；
Fig. 7 is the filter circuit figure of the utility model；
Fig. 8 is the vibration at high speed signal processing circuit functional block diagram of the utility model；
Fig. 9 is the power module circuitry functional block diagram of the utility model.
Specific embodiment
As shown in Figure 1, the utility model includes current Ratio signal processing module, the total change of variable mould of vibration at high speed signal
Block, the steering engine position that conditioning amplification is carried out to steering engine position signal and atmospheric temperature signal and atmospheric temperature signal processing module,
Original flies ginseng channel switching module, digital control processing module and power module；The signal of the digital control processing module is defeated
First signal input part of outlet connection synthetical collection device；As shown in Fig. 2, in the present embodiment, the digital control processing mould
Block includes A/D sampling module and data processing module, input of the input terminal of A/D sampling module as digital control processing module
End, the input terminal of the output end connection data processing module of A/D sampling module, the output end conduct of the data processing module
The output end of digital control processing module.
The signal output end of the first input end connection first pressure gauge of the current Ratio signal processing module, electric current
The signal output end of the second input terminal connection second pressure gauge of ratio signal processing module, current Ratio signal processing module
Third input terminal connects the signal output end of third pressure gauge, the 4th input terminal connection the 4th of current Ratio signal processing module
The signal output end of pressure gauge, the 5th input terminal of current Ratio signal processing module connect the signal output of the 5th pressure gauge
It holds, the signal output end of the 6th input terminal the 6th pressure gauge of connection of current Ratio signal processing module, at current Ratio signal
Manage the signal output end of the 7th input terminal connection oil temperature gauge of module；The output end of current Ratio signal processing module connects
The current Ratio signal input terminal of digital control processing module.
Current Ratio signal processing module is sent after 6 tunnels of input are exchanged ratio signal and the conditioning of 1 road direct current ratio signal
Ratio operation is carried out to digital control processing module, then gives synthetical collection device by the exporting operation result of 422 buses.
The vibration at high speed signal total amount conversion module include vibration signals collecting mechanism, vibration signal interconnecting module,
First conditioning amplifying circuit and filter circuit；
The vibration signals collecting mechanism includes shaking for acquiring the one or three axis of front part of a body three-axial vibration signal
Dynamic sensor, for acquiring the two or three axis vibration sensor of three-axial vibration signal in the middle part of body, for acquiring engine before
Hold the first vibrating sensor of vibration signal, the second vibrating sensor for acquiring engine rear end vibration signal, for adopting
Collect the third vibrating sensor of vibration reducer signal；In aircraft, the one or three axis vibration sensor is set to radar module, and second
Three axis vibration sensors are set in the middle part of body, and the first vibrating sensor, the second vibrating sensor, third vibrating sensor are all provided with
It is placed in enging cabin, is located at the different location for sending cabin.
The output end of one or three axis vibration sensor, the output end of the two or three axis vibration sensor, the first vibration
The output end of sensor, the output end of the second vibrating sensor, third vibrating sensor output end be separately connected the first conditioning
The input terminal of amplifying circuit is connected, and the output end of the first conditioning amplifying circuit is connected digital control by filter circuit
The vibration signal input terminal of processing module；The signal of vibration signals collecting mechanism output is vibration acceleration signal；
The output end of one or three axis vibration sensor, the output end of the two or three axis vibration sensor, the first vibration
The output end of sensor, the output end of the second vibrating sensor, third vibrating sensor output end be separately connected vibration signal
The input terminal of interconnecting module, the vibration signal input terminal of the output end connection synthetical collection device of the vibration signal interconnecting module；
The vibration acceleration signal that self-excited oscillation signal acquisition mechanism inputs is divided by vibration at high speed signal total amount conversion module
Two parts, a part directly pass through vibration signal interconnecting module for the vibration in vibration signals collecting mechanism without any processing
Dynamic original signal is forwarded to the high-speed sampling channel of synthetical collection device；Another part is in vibration at high speed signal total amount conversion module
Then amplify conditioning, vibration at high speed signal total amount conversion module will treated that vibration acceleration signal is transferred to is digital control
Processing module carries out Integral Processing, and integral is obtained the output of vibration velocity parameter by 422 buses by digital control processing module
Give synthetical collection device.
It sets the first input end connection pilot centered rudder seat in the plane of the steering engine position and atmospheric temperature signal processing module
The signal output end of terminal box；Second input terminal of steering engine position and atmospheric temperature signal processing module connects atmospheric temperature sensing
The signal output end of device；The output end of steering engine position and atmospheric temperature signal processing module is separately connected the steering engine of synthetical collection device
Position signal input terminal and atmospheric temperature signal input part；Atmosphere temperature transducer is set in engine inlets.
In the present embodiment, the steering engine position and atmospheric temperature signal processing module use third to improve amplifying circuit,
The third conditioning amplifying circuit is identical as the second conditioning amplifying circuit, and third improves amplifying circuit for 4 road steering engines of input
Position signal (steering engine lengthwise position signal, steering engine horizontal position signal, steering engine vertical position signal, steering engine are always away from position signal)
And atmospheric temperature signal carries out signal condition, becomes 0 ~ 10V d. c. voltage signal, is output to synthetical collection device acquisition channel.
The original flies the former winged ginseng channel signal output end of input terminal connection of ginseng channel switching module, and the channel Yuan Feican turns
The original of the output end connection synthetical collection device of connection module flies ginseng signal incoming end；Original, which will fly ginseng signal converting module, to be inputted by plug
Original fly 74 signal convertings in ginseng channel to synthetical collection device.
The power module is respectively current Ratio signal processing module, vibration at high speed signal total amount conversion module, right
Steering engine position signal and atmospheric temperature signal carry out steering engine position and the atmospheric temperature signal processing module, Yuan Feican of conditioning amplification
Channel switching module and the power supply of digital control processing module.
Current Ratio signal processing module described in the signal adapter suitable for aircraft includes the second conditioning
Amplifying circuit and real available value conversion circuit；
As shown in figure 3, the chip that the second conditioning amplifying circuit includes RC filter network, amplifies signal condition
The peripheral circuit of AD620SQ883 and chip AD620SQ883；
The RC filter network includes first resistor R1, second resistance R2, first capacitor C1, the second capacitor C2, third
Capacitor C3；The peripheral circuit of chip AD620SQ883 includes the 4th resistance R4, the 5th resistance R5, the 4th capacitor C4, the 5th capacitor
C5, the 6th capacitor C6, the 7th capacitor C7；
The first resistor R1 first end is directly as first pressure gauge, second pressure gauge, third pressure gauge, the 4th pressure
The direct current ratio signal input of power table, the 5th pressure gauge, the exchange ratio signal input terminal of the 6th pressure gauge and oil temperature gauge
End；The second resistance R2 first end directly as first pressure gauge, second pressure gauge, third pressure gauge, the 4th pressure gauge,
The DC power supply thermal compensation signal of 5th pressure gauge, the AC power source thermal compensation signal input terminal of the 6th pressure gauge and oil temperature gauge is defeated
Enter end, 2 feet of the second end connection chip AD620SQ883 of first resistor R1, the second end of second resistance R2 connects chip
3 feet of AD620SQ883；Concatenate the second capacitor C2 between the second end of first resistor R1 and the second end of second resistance R2, first
The second end of resistance R1 is grounded by first capacitor C1, and the second end of second resistance R2 is grounded by third capacitor C3；
1 foot of chip AD620SQ883 pass sequentially through the 4th resistance R4, the 5th resistance R5 connection chip AD620SQ883 8
Foot；The 7 feet connection power module anode of chip AD620SQ883,4 feet of chip AD620SQ883 connect power module cathode, electricity
Source module anode passes through the 4th capacitor C4, the 5th capacitor C5 ground connection respectively；Power module cathode passes through the 6th capacitor C6, respectively
Seven capacitor C7 ground connection；5 feet of chip AD620SQ883 are that reference voltage, 6 feet are that output connects the straight of digital control processing module
Stream ratio signal input terminal (exchange ratio signal needs real available value to convert, and direct current does not need)；
As shown in figure 4, the real available value conversion circuit includes realizing the chip AD637 and chip of RMS conversion
The peripheral circuit of AD637, the peripheral circuit of the chip AD637 include the 6th resistance R6, the 8th capacitor C8, the 9th capacitor C9,
Tenth capacitor C10, the 11st capacitor C11, the 12nd capacitor C12；
1 foot, 3 feet, 4 feet of the chip AD637 are grounded respectively；5 feet of chip AD637 pass through the 6th resistance R6 connection
Power module anode, the 11 feet connection power module anode of chip AD637,11 feet of chip AD637 pass through the 8th electricity in parallel
Hold C8 and the 9th capacitor C9 ground connection；10 feet of chip AD637 connect power module cathode, and 10 feet of chip AD637 pass through parallel connection
The tenth capacitor C10 and the 11st capacitor C11 ground connection；
13 feet of chip AD637 are that input is connect with 6 feet of chip AD620SQ883, and 6 feet of chip AD637 concatenate 9 feet,
8 feet of chip AD637 concatenate 9 feet by the 12nd capacitor C12, and 9 feet of chip AD637 are that output connects digital control processing mould
The exchange ratio signal input terminal of block.
As shown in figure 5, the direct current ratio signal exchange ratio signal processing circuit is the second conditioning amplifying circuit, directly
It flows ratio signal and is input to adapter by oil temperature gauge terminals, carry out signal filtering through the second conditioning amplifying circuit and put
Greatly, DC power supply thermal compensation signal is filtered and decays, and the signal handled is exported to digital control processing module.
Wherein, direct current ratio signal amplification factor and DC power supply thermal compensation signal attenuation multiple are adjustable, with ensure to export
Signal meets the acquisition voltage range of A/D sampling module in digital control processing module.For meet follow-up signal processing expand and
Upgrade requirement, adapter reserve the direct current ratio proccessing circuit in 3 channels altogether.
As shown in fig. 6, the exchange ratio signal processing circuit includes that the second conditioning amplifying circuit and real available value turn
Circuit is changed, true effective value converting circuit will exchange ratio signal and power supply becomes direct current signal and handles.Adapter coexistence
Manage 6 tunnels exchange ratio signal, picked up from respectively per input AC ratio signal and AC power source thermal compensation signal all the way first pressure gauge,
Second pressure gauge, third pressure gauge, the 4th pressure gauge, the 5th pressure gauge, the 6th pressure gauge end, exchange ratio signal input are equal
For frequency 400Hz, amplitude -1~+1V AC signal, AC power source thermal compensation signal is 400Hz36V alternating current.
AC power source thermal compensation signal process is divided into two steps: the first step, and the ratio signal of input is sent into conditioning amplification
Circuit carries out signal filtering and amplification, and power supply signal carries out carrying out signal filtering and decaying；Second step passes through the signal after conditioning
True effective value converting circuit is crossed, AC power source compensation and AC power source thermal compensation signal are changed into direct current signal, finally by signal
It exports to digital control processing module.
Wherein, ratio signal amplification factor and power supply signal attenuation multiple are adjustable, to ensure that the signal exported meets number
Control the acquisition voltage range of A/D sampling module in processing module.
Digital control processing module will mainly be compensated by current ratio processing module, the current Ratio signal and power supply of input
Signal carries out ratio operation in inside modules, then treated data is exported by 422 buses and give synthetical collection device: first
Step carries out A/D sampling by ratio signal and power supply signal of the A/D sampling module to input；Second step passes through data processing mould
Ratio signal and power supply signal are carried out division arithmetic by block；Third step, by the result after operation with 422 bus digital signal forms
It exports and gives synthetical collection device.
Current ratio processing module in the utility model by acquiring airborne supply voltage, design conditioning amplifying circuit and
Divider eliminates the original reason error generated due to mains fluctuations, improves the acquisition of ac and dc current ratio signal
Precision, to improve the precision of the ac and dc current ratio signal of synthetical collection device acquisition.
To meet, follow-up signal processing is expanded and upgrade requirement, adapter reserve the exchange ratio proccessing electricity in 8 channels altogether
Road.
First conditioning amplifying circuit described in the vibration at high speed signal total amount conversion module and the second conditioning are amplified
Circuit is identical, as shown in fig. 7, the filter circuit uses MAX274 chip, filter is 4 rank continuous time active power filterings
Device, be internally integrated two 2 scalariform state variable filter units, it can be achieved that the band logical of the optional frequency within the scope of 0~150kHz and
Low pass can realize the bandpass filtering of various frequencies by adjusting 4 external resistance.
As shown in figure 8, being shaken by the output end of the one or three axis vibration sensor in vibration signals collecting mechanism, the two or three axis
Output end, the output end of the first vibrating sensor, the output end of the second vibrating sensor, the third vibrating sensor of dynamic sensor
The vibration at high speed signal of input is divided into two parts after entering vibration at high speed signal total amount conversion module, and a part passes through vibration signal
Interconnecting module is forwarded to the high speed acquisition channel of synthetical collection device；Another part, which send vibration acceleration signal to the first conditioning, to be put
Big circuit and filter circuit carry out blocking, amplification to vibration acceleration signal, and according to the defeated of the one or three axis vibration sensor
Outlet, the output end of the two or three axis vibration sensor, the first vibrating sensor output end, the second vibrating sensor output
End, third vibrating sensor response frequency design bandpass filter, filter out dry on unexpected vibration signal and route
Disturb signal；Then by treated, vibration acceleration signal is sent to digital control processing module.
Digital control processing module by vibration acceleration signal that vibration at high speed signal total amount conversion module is inputted into
Row A/D conversion and digital Integral Processing, are output to synthetical collection device by 422 buses for the vibration velocity signal that integral obtains,
Specific processing is divided into three steps: the first step, carries out A/D sampling to the vibration acceleration signal of input；Second step obtains sampling
The vibration acceleration signal taken carries out digital integration operation；Third step, by the vibration velocity signal after integral operation with 422 buses
Digital signal form, which exports, gives synthetical collection device.
It changes the outfit requirement to meet domestic FDR system, the output end of the one or three axis vibration sensor, the two or three shaft vibration pass
The output end of sensor, the output end of the first vibrating sensor, the output end of the second vibrating sensor, third vibrating sensor are pressure
Electric-type sensor, using piezoelectric effect principle, the charge or voltage exported by sensor reflects vibration acceleration.Due to output
Vibration acceleration signal be high-frequency signal, cannot directly be integrated into collector low channel and be acquired record, adapter solution
It has determined this problem；Meanwhile being intuitive reflection vibrational energy transformation, the vibration acceleration signal that sensor exports need to be integrated into
Vibration velocity signal in unit time.
In the present embodiment, digital control processing module is made of dsp chip.Using dsp chip to vibration acceleration signal
It is pre-processed, the vibration acceleration signal of input is integrated and converted, export the effective true value voltage signal of vibration velocity
Record is acquired to synthetical collection device.This method circuit simple, intuitive, reliable operation, will not generate data loss problem.
The signal adapter suitable for aircraft further includes self-detection result display screen, the digital control processing mould
The input terminal of the self-detection result output end connection self-detection result display screen of block.Exterior panel is provided on self-detection result display screen to refer to
Show that lamp, the exterior panel indicator light are connected with digital control processing module.
Digital control processing module controls modules self-test, realizes the self-test management to internal module.
Fly ginseng signal adapter maintainability to improve, flies ginseng signal adapter internal module design and have two kinds from procuratorial organ
Formula: 1, power-on self-test；2, period self-test.It is realized using DSP technology as follows to the control principle of two kinds of self test modes of modules:
Power-on self-test control: including mainly power self test and dsp chip self-test, controlled by digital control processing module, electricity
Modules supply voltage and 27V voltage are detected by the A/D of DSP from inspection.
(2) period self-test controls: dsp chip setting from the overhaul period, carries out modules input supply voltage accordingly
Periodic measurement, power input 27V voltage.
The status indicator lamp of self-detection result driving panel setting is indicated, while being input to synthetical collection through 422 buses
Device, and winged ginseng signal adapter exterior panel indicator light is driven to be alerted.
By airborne equipment design requirement, adapter apparatus should be inspected periodically, to ensure adapter precision.For simplification
Step is inspected periodically, maintenance workload is reduced, improves equipment precision, the dsp chip internal build in digital control processing module
The calibration data table of current Ratio signal, in inspecting periodically work, by the ground maintenance personnel serial line interface reserved by DSP
Calibration data is inputted, is modified, it is ensured that equipment precision.
As shown in figure 9, the power module includes electromagnetic interface filter, surge suppressor, the 13rd capacitor for energy storage
The first input end of C13 and the 14th capacitor C14, DC/DC converter, diode D1, the electromagnetic interface filter connects on aircraft
DC power anode, the second input terminal of the electromagnetic interface filter connects aviation power supply power cathode, the of electromagnetic interface filter
One input terminal connects the DC power cathode on aircraft, and the first output end of the electromagnetic interface filter is connected by diode D1
The second output terminal of the first input end of surge suppressor, the electromagnetic interface filter passes through diode D1 connection surge suppressor
The second input terminal, the third output end ground connection of electromagnetic interface filter, the first output end of the surge suppressor connects DC/DC
The first input end of converter, the second input terminal of the second output terminal connection DC/DC converter of surge suppressor, Surge suppression
The 13rd capacitor C13, the first output end of DC/DC converter and are serially connected between the first output end and second output terminal of device
The 14th capacitor C14 is serially connected between two output ends.
Power module interior forward end is filtered input power signal using electromagnetic interface filter, reduces adapter
Equipment internal module generates interference voltage transmitting to aircraft power supply, while reducing the unclean power supply of busbar to equipment internal module
Influence.
Surge suppressor is arranged in power input, and excessively high transient surge voltage is tracked and pressed down using active device
System guarantees that output voltage is maintained always within the supply district of equipment permission, the voltage energy quilt beyond normal power supply part
Surge protection module is converted into heat absorption and falls, to achieve the purpose that purification power supply, guarantee system reliably works.
13rd capacitor C13 and the 14th capacitor C14 selects high energy tantalum capacitor, and maximum capacity reaches mF rank, completely
The 200ms power-off that can satisfy system keeps function, and the 200ms power-off for making adapter meet aircraft electrical supply parameters requirement keeps function
Can, when guaranteeing external power supply cutting or deficiency, system can also work normally minimum 200ms.
The signal adapter suitable for aircraft further includes cabinet, the current Ratio signal processing module, height
Fast vibration signal total amount conversion module, the steering engine position that conditioning amplification is carried out to steering engine position signal and atmospheric temperature signal and big
Temperature signal processing module, Yuan Feican channel switching module, digital control processing module and power module are set in cabinet.
Cabinet is to the carry out physical protection.
It generates heat in the module setting of big component, it should be as close to cabinet fascia edge.
The utility model is handled by signal of the digital control processing module to acquisition, is arranged at current Ratio signal
Module is managed, is increased to main hydraulic pressure, redundant hydraulic pressure, auxiliary hydraulic pressure pressure, Left Hand Engine lubricating oil pressure, right engine
Lubricating oil pressure, retarder lubricating oil pressure, the acquisition of current Ratio signal in 7 channels of retarder oil temperature signal and right
The amendment of its original reason error and adaptation, design conditioning amplifying circuit and divider are eliminated due to mains fluctuations and are generated
Original reason error, improves the acquisition precision of ac and dc current ratio signal, so that the friendship for improving the acquisition of synthetical collection device is straight
Flow the precision of current Ratio signal；By being arranged vibration at high speed signal total amount conversion module, acquisition front part of a body, in the middle part of body
Vibration signal, and the vibration signal of acquisition motor head, engine and retarder, and a part is forwarded to synthetical collection
The high-speed sampling channel of device；Another part then amplifies conditioning, and signal is exported to digital control processing mould by treated
Synthetical collection device is given in output after block carries out Integral Processing, solves the high-frequency vibration acceleration letter of vibration signals collecting mechanism output
Number it cannot directly be integrated into the problem of collector low channel is acquired record；Believed by steering engine position signal and atmospheric temperature
Number processing module is that the 4 road steering engine position signals that will be inputted and atmospheric temperature signal carry out signal condition, becomes 0 ~ 10V direct current
Signal is pressed, 4 road steering engine position signals and atmospheric temperature signal is enable to be integrated into collector acquisition and recording；Setting is former to fly ginseng signal
Interconnecting module is by the former signal converting for flying ginseng channel to synthetical collection device, and before increasing multiple pressure, temperature signal, body
Vibration signal in the middle part of portion, body, the vibration signal of motor head, engine and retarder, four road steering engine position signals, with
And atmospheric temperature signal, it is modulated, is handled, the signal completed between aircraft original signal and synthetical collection device transmits tune
System, increases the accuracy and quantity of the signal of synthetical collection device acquisition, to comment for air-accident investigation, flight training quality
Estimate, the offers such as engineering maintenance guarantee are more objective, accurately foundation.
Claims (9)
1. a kind of signal adapter suitable for aircraft, it is characterised in that: including current Ratio signal processing module, vibration at high speed
Signal total amount conversion module, the steering engine position that conditioning amplification is carried out to steering engine position signal and atmospheric temperature signal and atmospheric temperature
Signal processing module, Yuan Feican channel switching module, digital control processing module and power module；
The signal output end of the first input end connection first pressure gauge of the current Ratio signal processing module, current ratio
The signal output end of the second input terminal connection second pressure gauge of signal processing module, the third of current Ratio signal processing module
Input terminal connects the signal output end of third pressure gauge, and the 4th input terminal of current Ratio signal processing module connects the 4th pressure
The signal output end of table, the 5th input terminal of current Ratio signal processing module connect the signal output end of the 5th pressure gauge, electricity
The 6th input terminal for flowing ratio signal processing module connects the signal output end of the 6th pressure gauge, current Ratio signal processing module
The 7th input terminal connection oil temperature gauge signal output end；The output end connection number control of current Ratio signal processing module
The current Ratio signal input terminal of processing module processed；
The vibration at high speed signal total amount conversion module includes vibration signals collecting mechanism, vibration signal interconnecting module, first
Improve amplifying circuit and filter circuit；
The vibration signals collecting mechanism includes passing for acquiring the one or three shaft vibration of front part of a body three-axial vibration signal
Sensor, the two or three axis vibration sensor for acquiring body middle part three-axial vibration signal are shaken for acquiring motor head
First vibrating sensor of dynamic signal, the second vibrating sensor for acquiring engine rear end vibration signal subtract for acquiring
The third vibrating sensor of fast device vibration signal；
One or three axis vibration sensor, the two or three axis vibration sensor, the first vibrating sensor, the second vibrating sensing
Device, third vibrating sensor output end respectively with the input terminal of vibration signal interconnecting module and first conditioning amplifying circuit it is defeated
Enter end to be connected, the output end of the first conditioning amplifying circuit connects the vibration of digital control processing module by filter circuit
Dynamic signal input part, the vibration signal input terminal of the output end connection synthetical collection device of the vibration signal interconnecting module；
Set wiring in the first input end connection pilot centered rudder seat in the plane of the steering engine position and atmospheric temperature signal processing module
The signal output end of box；Second input terminal of steering engine position and atmospheric temperature signal processing module connects atmosphere temperature transducer
Signal output end；The output end of steering engine position and atmospheric temperature signal processing module is separately connected the steering engine position of synthetical collection device
Signal input part and atmospheric temperature signal input part；
The original flies the former winged ginseng channel signal output end of input terminal connection of ginseng channel switching module, Yuan Feican channel switching mould
The original of the output end connection synthetical collection device of block flies ginseng signal incoming end；
First signal input part of the signal output end connection synthetical collection device of the digital control processing module；
The power module is respectively current Ratio signal processing module, vibration at high speed signal total amount conversion module, steering engine position
It sets and atmospheric temperature signal processing module, Yuan Feican channel switching module and digital control processing module is powered.
2. the signal adapter according to claim 1 suitable for aircraft, it is characterised in that: the current Ratio signal
Processing module includes the second conditioning amplifying circuit and real available value conversion circuit；
The chip AD620SQ883 and chip that the second conditioning amplifying circuit includes RC filter network, amplifies signal condition
The peripheral circuit of AD620SQ883；
The RC filter network includes first resistor, second resistance, first capacitor, the second capacitor, third capacitor；Chip
The peripheral circuit of AD620SQ883 includes the 4th resistance, the 5th resistance, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th electricity
Hold；
The first resistor first end directly as first pressure gauge, second pressure gauge, third pressure gauge, the 4th pressure gauge,
The direct current ratio signal input terminal of 5th pressure gauge, the exchange ratio signal input terminal of the 6th pressure gauge and oil temperature gauge；Institute
The second resistance first end stated is directly as first pressure gauge, second pressure gauge, third pressure gauge, the 4th pressure gauge, the 5th pressure
The DC power supply thermal compensation signal input terminal of power table, the AC power source thermal compensation signal input terminal of the 6th pressure gauge and oil temperature gauge,
2 feet of the second end connection chip AD620SQ883 of first resistor, the 3 of the second end connection chip AD620SQ883 of second resistance
Foot；Concatenate the second capacitor between the second end of first resistor and the second end of second resistance, the second end of first resistor passes through the
The second end of one capacity earth, second resistance passes through third capacity earth；
1 foot of chip AD620SQ883 passes sequentially through 8 feet of the 4th resistance, the 5th resistance connection chip AD620SQ883；Chip
The 7 feet connection power module anode of AD620SQ883,4 feet of chip AD620SQ883 connect power module cathode, power module
Anode passes through the 4th capacitor, the 5th capacity earth respectively；Power module cathode passes through the 6th capacitor, the 7th capacity earth respectively；
6 feet of chip AD620SQ883 are the direct current ratio signal input terminal that output connects digital control processing module；
The real available value conversion circuit includes realizing the periphery electricity of the chip AD637 and chip AD637 of RMS conversion
Road, the peripheral circuit of the chip AD637 include the 6th resistance, the 8th capacitor, the 9th capacitor, the tenth capacitor, the 11st capacitor,
12nd capacitor；
1 foot, 3 feet, 4 feet of the chip AD637 are grounded respectively；5 feet of chip AD637 connect power supply mould by the 6th resistance
Block anode, the 11 feet connection power module anode of chip AD637,11 feet of chip AD637 pass through the 8th capacitor in parallel and the
Nine capacity earths；10 feet of chip AD637 connect power module cathode, and 10 feet of chip AD637 pass through the tenth capacitor in parallel
With the 11st capacity earth；
13 feet of chip AD637 are 6 feet of input connection chip AD620SQ883；6 feet of chip AD637 concatenate 9 feet, chip
For 8 feet of AD637 by 9 foot of the 12nd capacitance series, 9 feet of chip AD637 are the friendship that output connects digital control processing module
Flow ratio signal input terminal.
3. the signal adapter according to claim 2 suitable for aircraft, it is characterised in that: the first conditioning amplification
Circuit is identical as the second conditioning amplifying circuit.
4. the signal adapter according to claim 1 suitable for aircraft, which is characterized in that the filter circuit is adopted
With MAX274 chip.
5. the signal adapter according to claim 3 suitable for aircraft, it is characterised in that: the steering engine position and big
Temperature signal processing module improves amplifying circuit, the third conditioning amplifying circuit and the second conditioning amplification electricity using third
Road is identical.
6. the signal adapter according to claim 1 suitable for aircraft, it is characterised in that: further include that self-detection result is shown
Screen, the input terminal of the self-detection result output end connection self-detection result display screen of the digital control processing module.
7. the signal adapter according to claim 1 suitable for aircraft, it is characterised in that: the power module includes
Electromagnetic interface filter, surge suppressor, the 13rd capacitor and the 14th capacitor, DC/DC converter, diode for energy storage, it is described
Electromagnetic interface filter first input end connection aircraft on DC power anode, the second input terminal of the electromagnetic interface filter connects
Connect aviation power supply power cathode, the DC power cathode on the first input end connection aircraft of electromagnetic interface filter, the EMI filter
First output end of wave device connects the first input end of surge suppressor by diode, and the second of the electromagnetic interface filter is defeated
Outlet connects the second input terminal of surge suppressor, the third output end ground connection of electromagnetic interface filter, the surge by diode
The first input end of the first output end connection DC/DC converter of suppressor, the second output terminal of surge suppressor connect DC/DC
Second input terminal of converter is serially connected with the 13rd capacitor, DC/ between the first output end and second output terminal of surge suppressor
The 14th capacitor is serially connected between the first output end and second output terminal of DC converter.
8. the signal adapter according to claim 1 suitable for aircraft, it is characterised in that: the digital control processing
Module includes A/D sampling module and data processing module, and the input terminal of A/D sampling module is as the defeated of digital control processing module
Enter end, the input terminal of the output end connection data processing module of A/D sampling module, the output end of the data processing module is made
For the output end of digital control processing module.
9. the signal adapter according to claim 1 suitable for aircraft, it is characterised in that: it further include cabinet, it is described
Current Ratio signal processing module, vibration at high speed signal total amount conversion module, steering engine position and atmospheric temperature signal processing module,
Original flies ginseng channel switching module, digital control processing module and power module and is set in cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877394.9U CN209085663U (en) | 2018-11-15 | 2018-11-15 | A kind of signal adapter suitable for aircraft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877394.9U CN209085663U (en) | 2018-11-15 | 2018-11-15 | A kind of signal adapter suitable for aircraft |
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| CN209085663U true CN209085663U (en) | 2019-07-09 |
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| CN201821877394.9U Expired - Fee Related CN209085663U (en) | 2018-11-15 | 2018-11-15 | A kind of signal adapter suitable for aircraft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091858A (en) * | 2021-03-18 | 2021-07-09 | 中国人民解放军海军航空大学青岛校区 | In-situ calibration device for lubricating oil mass |
| CN113658352A (en) * | 2021-07-07 | 2021-11-16 | 中国人民解放军海军航空大学青岛校区 | Airborne flight parameter signal adapting device |
-
2018
- 2018-11-15 CN CN201821877394.9U patent/CN209085663U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091858A (en) * | 2021-03-18 | 2021-07-09 | 中国人民解放军海军航空大学青岛校区 | In-situ calibration device for lubricating oil mass |
| CN113658352A (en) * | 2021-07-07 | 2021-11-16 | 中国人民解放军海军航空大学青岛校区 | Airborne flight parameter signal adapting device |
| CN113658352B (en) * | 2021-07-07 | 2023-01-03 | 中国人民解放军海军航空大学青岛校区 | Airborne flight parameter signal adapting device |
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