CN102033494A - Signal conditioning device orienting flight control simulation - Google Patents
Signal conditioning device orienting flight control simulation Download PDFInfo
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- CN102033494A CN102033494A CN 201010588623 CN201010588623A CN102033494A CN 102033494 A CN102033494 A CN 102033494A CN 201010588623 CN201010588623 CN 201010588623 CN 201010588623 A CN201010588623 A CN 201010588623A CN 102033494 A CN102033494 A CN 102033494A
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Abstract
本发明涉及一种面向飞行控制仿真的信号调理装置，其特征在于：信号检测板将接收目标系统发出的信号转接信号调理电路，同时所有经过转接的信号均被联接到信号检测板面板上的检测孔；AI信号调理电路的输出联接信号采集与处理工控机中的AD电路的输入端，信号采集与处理工控机中的DA电路的输出端与AO信号调理电路的输入端联接，DIO-O信号调理电路和DIO-I信号调理电路与信号采集与处理工控机中的DIO电路联接。本发明提高了飞行器仿真系统的模块化、标准化、通用化，具有性价比高、操作简单等优点。
The invention relates to a signal conditioning device for flight control simulation, which is characterized in that: the signal detection board transfers the signal sent by the receiving target system to the signal conditioning circuit, and at the same time, all the transferred signals are connected to the signal detection board panel detection hole; the output of the AI signal conditioning circuit is connected to the input end of the AD circuit in the signal acquisition and processing industrial computer, the output end of the DA circuit in the signal acquisition and processing industrial computer is connected to the input end of the AO signal conditioning circuit, and the DIO- The O signal conditioning circuit and the DIO-I signal conditioning circuit are connected with the DIO circuit in the signal acquisition and processing industrial computer. The invention improves the modularization, standardization and generalization of the aircraft simulation system, and has the advantages of high cost performance, simple operation and the like.
Description
Technical field
The present invention relates to a kind of signal regulating device towards flight control emulation, aircraft flight is controlled operations such as the signal that various sensor produced in the simulation process amplifies, filtering, nurse one's health within the scope that data collecting card allows, make it to become the signal that aircraft control analogue system data collecting card can be discerned.
Background technology
In various data acquisition system (DAS)s, the signal condition integrated circuit board all is an indispensable part in the system, its mainly act on be to the output signal of each analoglike, frequency, Boolean value output sensor isolate, filtering, amplification, shaping etc., be modulated to the signal that meets voltage range and pass to the signals collecting load module.
At patent of invention " multi-sensor access device of acquisition of road traffic information and data fusion method thereof " (application number: CN200810057549.9), introduce the multi-sensor access device of acquisition of road traffic information, comprised digital signal processor DSP, complex programmable logic device (CPLD), signal condition and translation circuit, CAN communication controller and network communication controller.The sensor signal of acquisition of road traffic information inserts CPLD by current-voltage conversion circuit, voltage-frequency conversion circuit, level-conversion circuit.CPLD has expanded the DSP signal and has inserted quantity, and has signal processing function.In " machinery and electronics " 2007 7 interim " signal condition of hyperchannel multisensor and Study on Data Acquisition System " literary compositions of delivering, at transverse planing machine, developed an Auto-Test System of overlapping hyperchannel, multisensor, comprising corresponding signal conditioning circuit.In " a kind of design of Standard Signal Regulating Card " literary composition of delivering in " Aerospace Control " 2006 24 1 phase of volume, at dissimilar floating ground measured signals, describe in detail and how these signal front and back ends are isolated, and nurse one's health the method that becomes to be suitable for the measurement of A/D collection module.In " observation and control technology ", in " at the current situation of air-to-air missile checkout equipment " literary composition that 2009 the 28th the 7th phases of volume delivered, designed airborne missile general-utility test platform based on LabVIEW and DAQ.The hardware using modular design stresses to have designed signal conditioning circuit, mainly comprises getting effective value, circuit such as mistake zero balancing, isolating amplifier circuit and filtering.Software design has mainly been finished the establishment of virtual panel, system's control, data acquisition process and demonstration storage supervisor, has also realized the Remote Network Monitoring function at last, can carry out remote live test and fault diagnosis easily.
The aircraft real-time emulation system is the simulated environment of research and management of checking aircraft flight and control system, the system hardware platform mainly is made up of simulation computer, data collecting card, power supply, signal regulating panel, stube cable, topworks etc., can realize the Performance Evaluation of digital emulation, hardware-in-the-loop simulation and the system of aerocraft system.When system works at hardware during at circuit type, with (flight control computer, topworks etc.) connecting system in kind, state of flight and flight path according to the instruction control aircraft, simulation computer real-time sampling rudder face and motor power data, simultaneously finish model aircraft in real time and resolve, and Flight Condition Data is shown and record in real time.In analogue system, the collection of the analog quantity of flight control computer (as elevating rudder, aileron rudder, engine throttle etc.) signal, emulation gyroscope and engine speed control need external corresponding apparatus to carry out emulation.Because may there be problems such as level match, instantaneous pressure interference, superpotential, noise and contact contact shake in input signal, must before the collection of A/D device, use signal conditioning circuit to finish the level conversion of simulating signal, filtering etc., to satisfy the requirement of A/D conversion input, therefore must the modelled signal modulate circuit and pre-filtering input signal is nursed one's health.
At aircraft model difference, the various sensors that adopted are (as vertical gyro, three rate gyros, magnetic course transmitter, angle of attack sensor, sideslip sensor, barometer altitude, speed pickup) all possibility is different with topworks, the magnitude of voltage difference of being exported, simultaneously different signal acquiring systems is also different to the requirement of acceptable signal level, so system often needs the corresponding signal condition of redesign production system.
Summary of the invention
The technical matters that solves
For fear of the deficiencies in the prior art part, the present invention proposes a kind of signal regulating device towards flight control emulation, can be to AI, AO, DI, the DO signal is nursed one's health and filtering, voltage, current signal in the output usual range, by with signal condition module and different main control modules, output signal combines, and realizes the versatility of design.
Technical scheme
A kind of signal regulating device towards flight control emulation is characterized in that comprising input plate, 16 road AI signal conditioning circuits, 16 road AO signal conditioning circuits, 16 road DIO-O signal conditioning circuits, 16 road DIO-I signal conditioning circuits; 16 tunnel simulating signal AI0 that the input plate sends the receiving target system are forwarded to 16 road AI signal conditioning circuits, 32 way word signal DI0 are forwarded to 16 road DIO-O signal conditioning circuits; With the signal converting of the signal of 16 road AO signal conditioning circuits output and the output of 16 road DIO-I signal conditioning circuits to goal systems; All signals through switching all are coupled to the detection hole on the input plate panel simultaneously; The output of 16 road AI signal conditioning circuits connects signals collecting and the input end of handling the AD circuit in the industrial computer, signals collecting connects with the input end of 16 road AO signal conditioning circuits with the output terminal of DA circuit in handling industrial computer, and 16 road DIO-O signal conditioning circuits and 16 road DIO-I signal conditioning circuits and signals collecting connect with 32 road DIO circuit in the processing industrial computer.
Described AI signal conditioning circuit comprises overvoltage crowbar, signal attenuation circuit, low-pass filter circuit and signal isolation circuit; Input signal carries out the conditioning of signal attenuation multiple through behind the overvoltage crowbar in signal attenuation circuit, the process low-pass filter circuit is after exported by signal isolation circuit again; Described overvoltage protection is ± 40V; Described attenuation multiple is 1 times, 2 times or 4 times; Described low-pass filtering pass band width is 200KHz.
Described AO signal conditioning circuit comprises signal isolation circuit, low-pass filter circuit and port protection circuit; Input signal inputs to low-pass filter circuit through signal isolation circuit, exports via the port protection circuit then; Described low-pass filtering pass band width is 200KHz; The voltage of described port protection circuit 1-12 passage output ± 10V, the voltage of 13-16 passage 4 output hoppings or electric current output; Described electric current is 4～20mA.
Described DIO-O signal conditioning circuit comprises overvoltage crowbar, signal level shift circuit, signal isolation circuit, toggle switch circuit and three-way power output circuit; Input signal exports signals collecting to and handles industrial computer through overvoltage crowbar, signal level shift circuit and signal isolation circuit, and at the output terminal connection three-way power output circuit of overvoltage crowbar, toggle switch control channel is selected; The level overvoltage protection of described overvoltage crowbar is 5,12 or 24V; Described signal level shift circuit is converted to 5V Transistor-Transistor Logic level digital signal with 16 road 5/12/24V pulse digital signals of goal systems output; Described three-way power is 5V/1A, 12V/1A and 24V/1A.
Described DIO-I signal conditioning circuit comprises overvoltage crowbar, signal level shift circuit, signal isolation circuit, toggle switch circuit and three-way power; Input signal exports goal systems to through signal isolation circuit output, signal level shift circuit and overvoltage crowbar, and at the output terminal connection three-way power circuit of overvoltage crowbar, toggle switch control channel is selected; The level overvoltage protection of described overvoltage crowbar is 5,12 or 24V; Described signal level shift circuit is converted to 5,12 or the pulse digital signal of 24V level with signals collecting and the 5V Transistor-Transistor Logic level digital signal of handling industrial computer output; Described three-way power is 5V/1A, 12V/1A and 24V/1A.
Beneficial effect
A kind of signal regulating device that the present invention proposes towards flight control emulation, movability requirement when signal controlling design easily can be satisfied whistle control system and is applied to different aircraft type emulation, can effectively simplify emulator at various hardware-in-the-loop simulation, reduce testing cost; Various sensors, switching value signal at aircraft flight control emulation carries out signal condition with corresponding signal collecting device specially, output signal satisfies the amplitude range of general flight control semaphore request, improve modularization, standardization, the universalization of aerial vehicle simulation system, had cost performance height, simple operation and other advantages.
Description of drawings
Fig. 1: signal regulating device block diagram of the present invention;
Fig. 2: AI signal condition card;
Fig. 3: AO signal condition card;
Fig. 4: DI signal condition card;
Fig. 5: DO signal condition card;
Fig. 6: Signal Spacing module circuit diagram;
Fig. 7: signal level shift circuit;
Fig. 8: input plate interface synoptic diagram.
Embodiment
Now in conjunction with the embodiments, accompanying drawing is further described the present invention:
The applied environment of present embodiment is used for the aircraft real-time emulation system, the aircraft real-time emulation system is the simulated environment of research and management of checking aircraft flight and control system, the system hardware platform mainly is made up of simulation computer, data collecting card, power supply, signal regulating panel, stube cable, topworks etc., can realize the Performance Evaluation of digital emulation, hardware-in-the-loop simulation and the system of aerocraft system.When system works at hardware during at circuit type, with (flight control computer, topworks etc.) connecting system in kind, state of flight and flight path according to the instruction control aircraft, simulation computer real-time sampling rudder face and motor power data, simultaneously finish model aircraft in real time and resolve, and Flight Condition Data is shown and record in real time.In analogue system, the collection of the analog quantity of flight control computer (as elevating rudder, aileron rudder, engine throttle etc.) signal, emulation gyroscope and engine speed control need external corresponding apparatus to carry out emulation.Because may there be problems such as level match, instantaneous pressure interference, superpotential, noise and contact contact shake in input signal, must before the collection of A/D device, use signal conditioning circuit to finish the level conversion of simulating signal, filtering etc., to satisfy the requirement of A/D conversion input, therefore must the modelled signal modulate circuit and pre-filtering input signal is nursed one's health.
At aircraft model difference, the various sensors that adopted are (as vertical gyro, three rate gyros, magnetic course transmitter, angle of attack sensor, sideslip sensor, barometer altitude, speed pickup) all possibility is different with topworks, the magnitude of voltage difference of being exported, simultaneously different signal acquiring systems is also different to the requirement of acceptable signal level, so system often needs the corresponding signal condition of redesign production system.The present invention has designed a general signal condition system towards aircraft flight control emulation, can be to AI, AO, DI, the DO signal is nursed one's health and filtering, and voltage, the current signal of output in the usual range is by with signal condition module and different main control modules, output signal combines, and realizes the versatility of design.
The technical indicator of present embodiment is as follows:
For the AI conditioning, can carry out signal attenuation multiple conditioning (1 times, 2 times or 4 times), low-pass filtering (pass band width 200KHz) is carried out in the Signal Spacing input, the realization overvoltage protection (± 40V).
For the AO conditioning, can carry out Signal Spacing, low-pass filtering (pass band width 200KHz), can carry out current/voltage and select: the voltage output of 12 passages is provided, but the voltage of 4 passage saltus steps or electric current output.(electric current: 4～20mA; Voltage: ± 10V.The voltage output channel is the 1-12 passage, and the optional output channel of electric current and voltage is the 13-16 passage);
Nurse one's health for DIO, 32 tunnel inputs, output channel are all carried out photoelectricity isolates, the transfer rate of DIO card reaches 12MB/S, and 32 road incoming levels can be adjustable between 5V/12V/24V, and 32 way words output conditioning: 32 road output levels can be adjustable between 5V, 12V or 24V; Provide 5V/1A, 12V/1A, 24V/1A three-way power lead-out terminal.
Each passage for AD, DA, DIO card on check-out console provides an interface.
System realization scheme as shown in Figure 1, the signal condition system comprises following 2 parts:
(1) input plate: analog/digital signal (16 tunnel simulating signal AI0 that goal systems is sent, 32 way word signal DI0), and analog/digital signal (16 tunnel simulating signal AO1 of signal condition card output, 32 way word signal DO1) guide on the panel, so that all signals are detected.
(2) signal condition processor: the analog/digital signal that the receiving target system sends, it is nursed one's health respectively become to be fit to the signal format that the AD card/the DIO card can be handled, export to signals collecting and handle industrial computer.Simultaneously, receive from signals collecting with handle the analog/digital signal that industrial computer sends, with its nurse one's health can the controlled target system signal format, export to goal systems.
The present embodiment circuit structure is as follows:
The interface of input plate is seen Fig. 7, and the major function of input plate provides the joint of all signals, makes the user to make things convenient for and detects any one signal accurately.The structure of input plate as shown in Figure 2.For the ease of carrying out input, the input pcb board is fixed on the high-strength transparence plexiglass base plate.The input plate each side has the splicing ear of 4 DB-37, and the user connects AI respectively, AO, DI, DO signal.96 signal testing points and corresponding earth point are arranged on the input plate, and the convenient measuring equipments such as oscillograph, multimeter, logic analyser that use carry out input.
In order to ensure the integrality and the high s/n ratio of signal, whole PCB circuit board adopt large tracts of land floor file, key signal line silver-plated, special processing such as wire widths is set according to signal characteristic, realize signal integrity, clean, safe transmission.
The signal condition processor: the signal condition processor is installed in a high-quality aluminium matter potable metal cabinet, cabinet inside includes independently digital switch power supply of 4 signal regulating panels and 4, fixedly the press strip design has rubber feet, can prevent that card from being impacted or vibrating the damage that causes.Rear panel is the interface of 8 DB-37, and the signal input and output are provided.Topmost one deck is the terminal web joint of input plate, and the check point of 96 road signals is provided.
The function of AI signal condition card: AI conditioning card is the simulating signal that 16 tunnel analog-signal transitions of goal systems output are gathered for suitable capture card.Fig. 2 has provided the functional block diagram of AI signal condition card.After entering AI conditioning card from the simulating signal of goal systems, at first enter overvoltage crowbar.When external input signal was higher than 40V, overvoltage crowbar started automatically, the isolating exterior signal, and protection system is not burnt.When the signal level amplitude be positioned at ± 40V between the time, signal can enter attenuator circuit.According to the toggle switch that the user sets, signal attenuation circuit can high precision be carried out 1/2/4 times decay to input signal.Signal after the decay is the low-pass filter circuit of 200KHz through bandwidth, with the whole filterings of the noise signal that is higher than 200KHz in the signal, be positioned at 200KHz with signal give signal isolation circuit.Signal isolation circuit can not have signal under the prerequisite of any loss, isolates AI conditioning card and AD capture card, makes the AD capture card can obtain clean effectively simulating signal as safe as a housely.Fig. 6 provided the arbitrary passage of AI signal condition card the Signal Spacing module circuit diagram, concrete function is isolated AI conditioning card and AD capture card exactly, guarantees the safety of AD card.In Fig. 5, signal is imported from left end, from right-hand member output, effectively protects the AD capture card.
The function of AO signal condition card: AO conditioning card is that 16 tunnel analog-signal transitions with the output of DA card are for being fit to the simulating signal of controlled target system.Fig. 3 has provided the functional block diagram of AO signal condition card.After entering AOI conditioning card from the simulating signal of DA card, at first the entering signal buffer circuit with DA card and the isolation of signal condition card, is guaranteed the safety of DA card.Then, signal through bandwidth be the low-pass filter circuit of 200KHz, the harmonic signal that is higher than 200KHz in the signal is all removed, be positioned at 200KHz with baseband signal give the port protection circuit.The port protection circuit is undistorted exports to goal systems to signal.
The schematic diagram basically identical of AO conditioning card circuit theory diagrams and AI circuit conditioning card, different is the signal flow Inbound.Its signal isolation circuit as shown in Figure 5, the AO signal is imported from right-hand member, left end output, this be with AI conditioning card circuit different place.
DIO signal condition card: DIO signal condition card can be handled 16 road DI signals and 16 road DO signals.This card is made up of 2 parts: (1) DI signal condition part; (b) DO signal condition part.Be illustrated with regard to DI signal condition and DO signal condition respectively below.
The function of DI signal condition part is that 16 road 5/12/24V pulse digital signals of goal systems output are converted to the 5VTTL level digital signal that the DIO card can receive.Fig. 4 has provided the functional block diagram of DI signal condition part.The pulse digital signal of goal systems at first enters overvoltage crowbar.According to the setting of user to each passage toggle switch, each passage can be set to 5/12/24V level overvoltage protection respectively.If the mxm. that signal level is provided with above overvoltage crowbar (such as; when utilizing certain passage of toggle switch to be set to the protection of 12V level; only the signal less than 12V just can enter DI signal condition card); then enter level shifting circuit; the high precision linearity incoming signal level is converted to the 5V Transistor-Transistor Logic level, give signal isolation circuit the signal of 5V Transistor-Transistor Logic level then.Signal isolation circuit can not have signal under the prerequisite of any loss, isolates DAI conditioning card and DIO card.Make the DIO card can access clean effectively digital signal, can not disturbed simultaneously by the signal of front end.In addition, this card can also be exported three kinds of power supplys of 5/12/24V (maximum 1A electric current).
The function of DO signal condition part is the pulse digital signal that the 5V Transistor-Transistor Logic level digital signal of DIO card output is converted to accurately the 5/12/24V level, with the controlled target system.The 5V Transistor-Transistor Logic level digital signal of DIO card output is at first isolated by signal isolation circuit; then according to the setting of user to every way word signal toggle switch; 5VTTL level digital signal is converted to the digit pulse of 5/12/24V level at a high speed, accurately, after the port protection circuit is exported to goal systems.
DI signal condition card basic circuit is almost consistent with DO signal condition card basic circuit, and is only opposite on signal input and output direction.Be the physical circuit figure of the signal level shift circuit of the single passage of DIO as shown in Figure 7.Signal is exported from left end in the DI conditioning card, adjusted signal right-hand member output; DO conditioning card signal direction is just opposite, from the output of right-hand member input left end.
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| CN103913692A (en) * | 2012-12-29 | 2014-07-09 | 北京谊安医疗系统股份有限公司 | Signal conditioning device for testing |
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| CN105182850A (en) * | 2015-09-08 | 2015-12-23 | 苏州宏展信息科技有限公司 | Engine rotating speed simulator based on power supply controller |
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Application publication date: 20110427 |