CN205656303U - Antenna detection device based on airborne collision avoidance system - Google Patents
Antenna detection device based on airborne collision avoidance system Download PDFInfo
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- CN205656303U CN205656303U CN201620488093.1U CN201620488093U CN205656303U CN 205656303 U CN205656303 U CN 205656303U CN 201620488093 U CN201620488093 U CN 201620488093U CN 205656303 U CN205656303 U CN 205656303U
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Abstract
The utility model relates to an antenna signal detection area, especially an antenna detection device based on airborne collision avoidance system. The utility model discloses problem to prior art exists provides a detection device. The comparison is carried out to magnitude of voltage AND gate electricity limiting pressure value through antenna detection port, and whether obtain current antenna work normal. Can automatic realize directional aerial's self test etc. Comparator reference voltage circuit produces door electricity limiting and presses maximum value vmax AND gate electricity limiting pressure minimum vmin in this device, when line detection enable signal was effective the same day, form pressure drop V0 on the antenna detection port to carry out the comparison with the comparator circuit, the comparator circuit makes the pressure drop V0 AND gate electricity limiting pressure value vmax AND gate electricity limiting of ability circuit input press minimum vmin to carry out the comparison sky line detection, imports the comparative result to the treater, the comparative result of treater output compare ware circuit input to judge whether normal the antenna state is.
Description
Technical field
This utility model relates to a kind of aerial signal detection field, a kind of antenna detection device based on airborne collision avoidance system.
Background technology
Airborne collision avoidance system (i.e. TCAS-Traffic Alert and Collision Avoidance System) is defined by US Federal Aviation Administration (FAA), is to prevent aerospace plane dangerous close to the requisite equipment occurred with accidents.TCAS is mainly used in providing air security separation assurance for aircraft, system use secondary radar mode detect neighbouring spatial domain close to aircraft, if desired, remind pilot to take workaround with the safe spacing suitable with the holding of other aircraft, reach the purpose of anticollision.Be facts have proved by flight in recent years, this system is the last line of defense preventing Aircraft Air from bumping against, also it is one of current maximally effective means, which overcome the limitation of terrestrial air traffic control, it is provided that the flight safety that can be provided by beyond ground traffic control ensures ability, danger to dealing with aerial burst is close, it is to avoid midair crash has huge effect.
ACAS transmitting-receiving main frame points to by controlling antenna beam, and region, 4, aircraft front, rear, left and right is scanned inquiry, and the neighbouring aircraft (hereinafter referred to as target machine) equipped with blank pipe answering machine (S mode/ATCRBS answering machine) will respond.ACAS transmitting-receiving main frame is according to the answer signal received, obtain the target informations such as the height of target machine, relative distance, speed, orientation, and and then calculate its height, altitude rate, relative distance, relative distance rate of change, the target informations such as orientation, monitor, follow the tracks of target machine, set up, update and safeguard targetpath.
By comprehensive with ownship information to supervision and the targetpath updated, evaluate threat level (OT: other aircraft of target machine, PT: close to aircraft, TA: traffic alert, RA: resolution alarm), thus produce Traffic query, or produce analysis consulting according further to the degree of threat, prevent from colliding with other aircraft；When both sides are equipped with CAS, it is possible to exchange Anticollision information, the purpose that reaching cooperates dodges by S mode Data-Link.Otherwise, guiding the machine is realized actively dodging by airborne collision avoidance system.
The beam antenna of airborne collision avoidance system mainly completes ACAS transmitting-receiving main frame inquiry directional beam, inquiry omni-beam, the formation of reception wave beam, and provides ACAS transmitting-receiving main frame that beam antenna connects the most correct and approach of beam antenna integrity detection.
Beam antenna uses amplitude pulse processing mode, launches inquiry wave beam at 1030MHz, and wave beam 3dB width is more than 90 °, so by four inquiry wave beams being differently directed, it is possible to achieve the covering to 360 ° of whole spatial domain.And when 1090MHz reception processes, realized the process of amplitude pulse by the amplitude size comparing four a period of time received signals.
Connect the most correct for making ACAS transmitting-receiving main frame can detect beam antenna port, and judge that beam antenna is the most faulty, the resistance to earth of the four of beam antenna radio frequency connector inputs is designed to different resistances, realizes the system detection to beam antenna.It is 1k Ω that the resistance value that wherein beam antenna each antenna connector port is corresponding is respectively as follows: the resistance value of 0 ° of port, and the resistance value of 90 ° of ports is 8k Ω, and the resistance value of 180 ° of ports is 4k Ω, and the resistance value of 270 ° of ports is 2k Ω.
Traditional detection method needs testing staff to utilize avometer artificially to detect the impedance of each road antenna channels, and can not accomplish real-time fault detection during equipment works,
When equipment goes wrong during operation often due to fault location accurately can not be accomplished, thus affect the performance of whole anticollision gear.
Utility model content
Goal of the invention of the present utility model is: the problem existed for prior art, it is provided that a kind of antenna detection device based on airborne collision avoidance system.This device is compared with threshold voltage by the magnitude of voltage of antenna detection port, obtains current antenna work the most normal.Can automatically, periodically, be effectively realized the Autonomous test of anticollision gear beam antenna, complete fault location, it is achieved Fault Isolation, it is simple to maintenance support, meet equipment test and maintenance needs.
The technical solution adopted in the utility model is such that
A kind of antenna detection device based on airborne collision avoidance system includes:
Comparator reference potential circuit, is used for producing threshold voltage maximum Vmax and threshold voltage minima Vmin；
Antenna detection enables circuit, for when antenna detection enable signal is effective, antenna detection port forming pressure drop V0；
Comparator circuit, compares for pressure drop V0 and the threshold voltage Vmax and threshold voltage minima Vmin that antenna detection enables circuit input, inputs comparative result to processor；Vmin<V0< Vmax；
Processor, for the comparative result of output comparator circuit input, and judges that antenna condition is the most normal.
Further, described antenna detection enable circuit includes that power supply, on-off circuit, antenna match resistance and resistance to earth, described power supply are connected with resistance to earth one end, antenna match resistance one end respectively with by on-off circuit；Resistance to earth other end ground connection；The antenna match resistance other end is connected with antenna detection port, comparator circuit input respectively, and antenna detection port internal resistance is equal with antenna match resistance；When Switching Power Supply Enable Pin enables, on-off circuit input is connected with switching circuitry output；Then form pressure drop 2V0 at antenna match resistance with common port over the ground, form pressure drop V0 at the antenna match resistance other end；The antenna match resistance other end enables circuit output end as antenna detection.On-off circuit Enable Pin enables circuit Enable Pin as antenna detection.
Further, described antenna match resistance includes 0 ° of antenna match resistance, 90 ° of antenna match resistance, 180 ° of antenna match resistance and 270 ° of antenna match resistance；Antenna detection port includes that 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection ports, described 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection port correspondences respectively are connected with 0 ° of antenna match resistance, 90 ° of antenna match resistance, 180 ° of antenna match resistance and 270 ° of antenna match resistance；Internal resistance in 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection ports is the most corresponding equal with 0 ° of antenna match resistance, 90 ° of antenna match resistance, 180 ° of antenna match resistance and 270 ° of antenna match resistances.
Further, described comparator reference potential circuit includes the first divider resistance, the second divider resistance and the 3rd divider resistance；Power supply and the first divider resistance, the second divider resistance, the 3rd divider resistance connect, then produce threshold voltage maximum Vmax=(the second divider resistance value the+the three divider resistance value between the first divider resistance and the second divider resistance) * supply voltage value/(first divider resistance value the+the second divider resistance value the+the three divider resistance value)；Threshold voltage maximum Vmin=(the 3rd divider resistance value is produced between second divider resistance and the 3rd divider resistance) * supply voltage value/(first divider resistance value the+the second divider resistance value the+the three divider resistance value).
Further, described comparator circuit is to include the threshold compataror corresponding with antenna detection port number；Threshold compataror includes thresholding maximum comparator and threshold minimum comparator, and wherein antenna detection enable circuit output end is connected with thresholding maximum comparator one input, threshold minimum comparator one input of threshold circuit of threshold circuit respectively；The common port of the first divider resistance and the second divider resistance is connected with thresholding another input of maximum comparator of threshold circuit；The common port of the second divider resistance and the 3rd divider resistance is connected with another input of threshold minimum comparator of threshold circuit；Described thresholding maximum comparator output terminal, threshold minimum comparator output terminal correspondence respectively is connected with processor.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
In the whole work process of airborne collision avoidance equipment, this self-inspection keeps the frequency of 1s/ time periodically to carry out self-inspection.This device passes through self-checking circuit to radio frequency cable connection state according to the self-inspection order that host process plate sends, open circuit or short circuit detect, and self-detection result is sent back process plate, failure code is reported carrier aircraft by ARINC429 bus and safeguards system by process plate, carrying out malfunction coefficient and record, the principle of concrete circuit is as shown in Figure 2.
By using above technical scheme, this patent can be implemented in the whole working stage of equipment and carries out antenna condition real time fail monitoring, and self-detection result reports carrier aircraft safeguard, and system carries out malfunction coefficient and record.And according to different self-detection results, abort situation can be accurately positioned, accomplish Fault Isolation effectively, greatly improve reliability and the maintainability of equipment.
Accompanying drawing explanation
Fig. 1 is antenna self-checking circuit theory diagram.
Fig. 2 is antenna self-checking circuit schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
1 as it is shown in figure 1, comparator circuit can by LM324, LM358, uA741, TL081 234, the chip such as OP07, OP27 builds.Need to form the maxima and minima comparator corresponding with antenna detection port；If 4 tunnel antenna detection ports, need 2*4 comparator port, wherein 4 thresholding maximum comparators and 4 tunnel threshold minimum comparators；If there being n road antenna detection port, need 2n comparator；Wherein n thresholding maximum comparator and n road threshold minimum comparator.
2, antenna match resistance, with the resistance of antenna detection port internal resistance correspondent equal.Wherein 0 degree of antenna match resistance and 0 ° of antenna detection port internal resistance value are equal, and remaining antenna match resistance is equal with respective antenna detection port internal resistance value.
3, the resistance that resistance to earth i.e. one end connects with ground.
4, thresholding maximum comparator, threshold minimum comparator are all comparators, are intended merely to be formed in circuit the threshold voltage needed and the resistance named.
5, on-off circuit can be that audion can also is that band enables the switch chip controlled.
6, a beam antenna has 4 passages, respectively 0 ° passage, 90 ° of passages, 180 ° of passages and 270 ° of passages.Antenna detection port corresponds respectively to the rf inputs of each passage of beam antenna.
Operation principle:
This device operation principle block diagram is as shown in Figure 1.nullThe operation principle of antenna self-inspection: antenna detection enable electric circuit inspection end respectively with 0 degree、90 degree、180 degree、(it is 1k that the internal resistance of No. 4 antennas is respectively as follows: T1 in 270 degree of T1～T4 antenna detection ends connections、T2 is 8k、T3 is 4k、T4 is 2k)，When antenna detection enables signal ZJ_EN effectively (high effectively)，Antenna detection port forms V0 level value (when antenna detection enable signal ZJ_EN is effective，On-off circuit Enable Pin is effective，On-off circuit input turns on switching circuitry output，Voltage is loaded on subsequent conditioning circuit by power supply by on-off circuit，Because antenna match resistance is the most corresponding equal with the resistance value of antenna detection port internal resistance，The 5V voltage powered by power end is divided equally，Form V0=2.5V)，Then input comparator circuit (4 thresholding maximum comparators and 4 tunnel threshold minimum comparators) is distinguished，With the comparison threshold Vmax (VH=2.89V) set by comparator circuit、Vmin (VL=1.78V) compares，Treated device exports after processing.As Vmin ＜ V0 ＜ Vmax, sky report from a liner is normal；As V0 ＞ Vmax, sky report from a liner open fault；As V0 ＜ Vmin, sky report from a liner short trouble.
A kind of antenna detection device based on airborne collision avoidance system includes:
Comparator reference potential circuit, is used for producing threshold voltage maximum Vmax and threshold voltage minima Vmin；
Antenna detection enables circuit, for when antenna detection enable signal is effective, antenna detection port being formed pressure drop V0, and compares with comparator circuit；
Comparator circuit, compares with threshold voltage minima Vmin with threshold voltage Vmax for antenna detection enables the pressure drop V0 of circuit input, inputs comparative result to processor；Vmin<V0< Vmax；
Processor, for the comparative result of output comparator circuit input, and judges that antenna condition is the most normal.
Further, described antenna detection enables circuit and includes power supply, on-off circuit, 4 antenna match resistance and resistance to earth (being numbered R0 in Fig. 2), and described power supply is connected with resistance to earth one end, 4 antenna match resistance one end respectively with by on-off circuit；Resistance to earth other end ground connection；4 antenna match resistance other ends are connected with 4 antenna detection ports, 4 comparator circuit inputs respectively, and antenna detection port internal resistance magnitude of voltage is equal with antenna match resistance；When Switching Power Supply Enable Pin enables, on-off circuit input is connected with switching circuitry output；Then form pressure drop 2V0 at antenna match resistance with common port over the ground, form pressure drop V0 at the antenna match resistance other end；The antenna match resistance other end enables circuit output end as antenna detection.On-off circuit Enable Pin enables circuit Enable Pin as antenna detection.
Wherein comparator circuit is to include 4 threshold compatarors；Threshold compataror includes thresholding maximum comparator (being numbered U1B, U1D, U2B, U2D in Fig. 2) and threshold minimum comparator (being numbered U1A, U1C, U2A, U2C in Fig. 2), and wherein antenna detection enable circuit output end is connected with thresholding maximum comparator one input, threshold minimum comparator one input of threshold circuit of threshold circuit respectively；The common port of the first divider resistance and the second divider resistance is connected with thresholding another input of maximum comparator of threshold circuit；The common port of the second divider resistance and the 3rd divider resistance is connected with another input of threshold minimum comparator of threshold circuit；Described thresholding maximum comparator output terminal, threshold minimum comparator output terminal correspondence respectively is connected with processor.
Wherein, described antenna match resistance includes 0 ° of antenna match resistance (being numbered R4 in Fig. 2), 90 ° of antenna match resistance (being numbered R3 in Fig. 2), 180 ° of antenna match resistance (being numbered R5 in Fig. 2) and 270 ° of antenna match resistance (being numbered R6 in Fig. 2)；Antenna detection port includes 0 ° of antenna detection port (being numbered ANT(0 in Fig. 2)), 90 ° of antenna detection ports (being numbered ANT2(90 in Fig. 2)), 180 ° of antenna detection ports (being numbered ANT3(180 in Fig. 2)) and 270 ° of antenna detection ports (being numbered ANT4(270 in Fig. 2)), described 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection ports correspondence and 0 ° of antenna match resistance respectively, 90 ° of antenna match resistance, 180 ° of antenna match resistance and 270 ° of antenna match resistance connect；Internal resistance in 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection ports is the most corresponding equal with 0 ° of antenna match resistance, 90 ° of antenna match resistance, 180 ° of antenna match resistance and 270 ° of antenna match resistance.
Further, comparator reference potential circuit includes the first divider resistance, the second divider resistance and the 3rd divider resistance；Power supply (+5V), the first divider resistance (being numbered R1 in Fig. 2), the second divider resistance (being numbered R2 in Fig. 2), the 3rd divider resistance (being numbered R3 in Fig. 2) connect, then produce threshold voltage maximum Vmax=(the second divider resistance value the+the three divider resistance value between the first divider resistance and the second divider resistance) * supply voltage value/(first divider resistance value the+the second divider resistance value the+the three divider resistance value)；Threshold voltage maximum Vmin=(the 3rd divider resistance value is produced between second divider resistance and the 3rd divider resistance) * supply voltage value/(first divider resistance value the+the second divider resistance value the+the three divider resistance value).
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (5)
1. an antenna detection device based on airborne collision avoidance system, it is characterised in that including:
Comparator reference potential circuit, is used for producing threshold voltage maximum Vmax and threshold voltage minima Vmin；
Antenna detection enables circuit, for when antenna detection enable signal is effective, antenna detection port forming pressure drop V0；
Comparator circuit, compares with threshold voltage minima Vmin with threshold voltage Vmax for antenna detection enables the pressure drop V0 of circuit input, inputs comparative result to processor；Vmin<V0< Vmax；
Processor, for the comparative result of output comparator circuit input, and judges that antenna condition is the most normal.
A kind of antenna detection device based on airborne collision avoidance system the most according to claim 1, it is characterized in that described antenna detection enables circuit and includes power supply, on-off circuit, antenna match resistance and resistance to earth, described power supply is connected with resistance to earth one end, antenna match resistance one end respectively by on-off circuit；Resistance to earth other end ground connection；The antenna match resistance other end is connected with antenna detection port, comparator circuit input respectively；Antenna detection port internal resistance is equal with antenna match resistance；When Switching Power Supply Enable Pin enables, on-off circuit input is connected with switching circuitry output；Then form pressure drop 2V0 at antenna match resistance with common port over the ground, form pressure drop V0 at the antenna match resistance other end；The antenna match resistance other end enables circuit output end as antenna detection；On-off circuit Enable Pin enables circuit Enable Pin as antenna detection.
A kind of antenna detection device based on airborne collision avoidance system the most according to claim 2, it is characterised in that described antenna match resistance includes 0 ° of antenna match resistance, 90 ° of antenna match resistance, 180 ° of antenna match resistance and 270 ° of antenna match resistance；Antenna detection port includes that 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection ports, described 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection port correspondences respectively are connected with 0 ° of antenna match resistance, 90 ° of antenna match resistance, 180 ° of antenna match resistance and 270 ° of antenna match resistance；Internal resistance in 0 ° of antenna detection port, 90 ° of antenna detection ports, 180 ° of antenna detection ports and 270 ° of antenna detection ports is the most corresponding equal with 0 ° of antenna match resistance, 90 ° of build-out resistors, 180 ° of build-out resistors and 270 ° of antenna match resistances.
4. according to a kind of based on airborne collision avoidance system the antenna detection device described in Claims 2 or 3, it is characterised in that described comparator reference potential circuit includes the first divider resistance, the second divider resistance and the 3rd divider resistance；Power supply, the first divider resistance, the second divider resistance, the 3rd divider resistance connect, then produce threshold voltage maximum Vmax=(the second divider resistance value the+the three divider resistance value between the first divider resistance and the second divider resistance) * supply voltage value/(first divider resistance value the+the second divider resistance value the+the three divider resistance value)；Threshold voltage maximum Vmin=(the 3rd divider resistance value is produced between second divider resistance and the 3rd divider resistance) * supply voltage value/(first divider resistance value the+the second divider resistance value the+the three divider resistance value).
A kind of antenna detection device based on airborne collision avoidance system the most according to claim 4, it is characterised in that described comparator circuit includes the threshold compataror corresponding with antenna detection port number；Threshold compataror includes thresholding maximum comparator and threshold minimum comparator, and wherein antenna detection enable circuit output end is connected with thresholding maximum comparator one input, threshold minimum comparator one input of threshold circuit of threshold circuit respectively；The common port of the first divider resistance and the second divider resistance is connected with thresholding another input of maximum comparator of threshold circuit；The common port of the second divider resistance and the 3rd divider resistance is connected with another input of threshold minimum comparator of threshold circuit；Described thresholding maximum comparator output terminal, threshold minimum comparator output terminal correspondence respectively is connected with processor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466750A (en) * | 2020-03-31 | 2021-10-01 | 南宁富桂精密工业有限公司 | Antenna connection detection device and antenna connection detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466750A (en) * | 2020-03-31 | 2021-10-01 | 南宁富桂精密工业有限公司 | Antenna connection detection device and antenna connection detection method |
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