CN204855795U - Embedded air traffic control radar feeder standing wave real -time supervision device - Google Patents

Abstract

The utility model relates to an embedded air traffic control radar feeder standing wave real -time supervision device, the device includes: bidirectional coupler sets up in the feeder of radar transmitter to antenna for the incident power and the reflected power of sampling feeder, power select switch for select incident power or reflected power, and send the wave detector to, the wave detector for sample hold circuit is given to timesharing output incident power and reflected power's detection envelope, sample hold circuit for the AD converter is given to timesharing output incident power and reflected power's corresponding peak power's detecting voltage, the AD converter for the analog voltage signal that will correspond peak power converts digital voltage signal into, the computer for convert out the incident power and the reflected power of correspondence calculate the real -time standing wave value of feeder system, and judge whether this standing wave value exceedes the emergency exit limit value. In the feeder system of the embedded access radar of monitoring devices, need not to shut down the real -time standing wave value that just can monitor the feeder system.

Description

A kind of embedded air traffic control radar feeder line standing wave real-time monitoring device

Technical field

The utility model relates to Radar Technology field, is specifically related to a kind of embedded air traffic control radar feeder line standing wave real-time monitoring device.

Background technology

The feeder system of radar is used for that the radio-frequency power that transmitter exports is fed to antenna and carries out radiation, due to the impedance mismatch of feeder line, feeder line can produce reflected signal, the incident wave that frequency is identical superposes with reflection wave and can form standing wave, this is disadvantageous to the transmission that transmits, feeder line even can be caused time serious to strike sparks, damage the equipment such as transmitter, so wish the safety value that feeder line standing wave is less than certain and specifies during Radar Design.

Current feeder line standing wave is tested with vector network analyzer usually, but adopts the method for Meter Test to need radar shutdown just can test.This is not suitable for air traffic control system, and due to the needs of aviation safety, air traffic control radar needs to work incessantly more than 1 year and just can carry out necessary maintenance, therefore invents a kind of device need not shut down with regard to energy Real-Time Monitoring radar feeder standing wave very necessary.

Utility model content

The purpose of this utility model is to provide a kind of embedded air traffic control radar feeder line standing wave real-time monitoring device, does not need to shut down the feeder line standing wave of monitoring radar that just can be real-time.

For achieving the above object, the utility model provides a kind of embedded air traffic control radar feeder line standing wave real-time monitoring device, and described monitoring device comprises:

Bidirectional coupler, is arranged at radar transmitter in the feeder line of antenna, for incident power and the reflective power of feeder line of sampling;

Power selector switch, for selecting incident power or reflective power under control of the computer, and sends wave detector to;

Wave detector, for receiving incident power from power selector switch and reflective power, and timesharing exports the detected envelope of incident power and reflective power to sampling hold circuit;

Sampling hold circuit, exports the detecting circuit of the corresponding peak power of incident power and reflective power to A/D transducer for timesharing;

A/D transducer, for being converted to digital voltage signal by the analog voltage signal of corresponding peak power;

Computing machine, for described digital voltage signal being conversed corresponding incident power and reflective power, calculating the real-time standing wave value of feeder system, and judging whether this standing wave value exceedes safety door limit value.

Preferably, described monitoring device also comprises:

Display, for the real-time standing wave value that Display control computer sends;

Alarm, for when standing wave value exceedes safety door limit value, reports to the police under the instruction of computing machine.

In the feeder system of the Embedded access radar of described monitoring device, without the need to shutting down the real-time standing wave value just can monitoring feeder system.

Accompanying drawing explanation

Fig. 1 is the theory diagram of an embodiment of the present utility model;

Fig. 2 is the theory diagram of an embodiment of the present utility model.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Please refer to Fig. 1, the Embedded radar feeder line standing wave monitoring device that the utility model embodiment provides comprises:

Bidirectional coupler 1, is arranged at radar transmitter in the feeder line of antenna, for incident power and the reflective power of feeder line of sampling;

Power selector switch 2, for selecting incident power or reflective power under the control of computing machine 3, and sends wave detector 4 to;

Wave detector 4, for receiving incident power from power selector switch 2 and reflective power, and timesharing exports the detected envelope of incident power and reflective power to sampling hold circuit 5;

Sampling hold circuit 5, exports the detecting circuit of the corresponding peak power of incident power and reflective power to A/D transducer 6 for timesharing;

A/D transducer 6, for being converted to digital voltage signal by the analog voltage signal of corresponding peak power;

Computing machine 3, for described digital voltage signal being conversed corresponding incident power and reflective power, calculating the real-time standing wave value of feeder system, and judging whether this standing wave value exceedes safety door limit value.

In the feeder system of the Embedded access radar of described monitoring device, without the need to shutting down the real-time standing wave value just can monitoring feeder system.

Further, please refer to Fig. 2, in some preferred embodiment of the present utility model, described monitoring device also comprises:

Display 7, for the real-time standing wave value that Display control computer 3 sends;

Alarm 8, for when standing wave value exceedes safety door limit value, reports to the police under the instruction of computing machine 3.

Wherein, described display and alarm, can adopt the mode of peripheral hardware, also can be integrated in computing machine.

The following describes the monitoring method of the utility model preferred embodiment:

Step 1: by incident power and the reflective power of bidirectional coupler sampling feeder line;

Step 2: computing machine controls power selector switch and selects incident power or reflective power, and wave detector is given in timesharing;

Step 3: wave detector timesharing exports the detected envelope of incident power and reflective power to sampling hold circuit;

Step 4: sampling hold circuit timesharing exports the detecting circuit of corresponding peak power to A/D transducer;

The analog voltage of corresponding peak power is converted to digital signal by step 5:A/D transducer;

Step 6: computing machine obtains voltage value and converses corresponding incident power and reflective power, and the real-time standing wave value calculating feeder system send display to show;

Step 7: when feeder system standing wave value exceedes safety door limit value, alarm equipment alarm.

Concrete, computing machine is according to following formulae discovery standing wave value:

$\mathrm{\ρ}=\frac{1+\mathrm{\Γ}}{1-\mathrm{\Γ}},$ (wherein )

Wherein, P _insteadrepresent reflective power, P _enterrepresent incident power.

It should be noted that, the utility model is mainly used in air traffic control system, but is not limited to air traffic control system, and the occasion for other radar application also can use monitoring device of the present utility model to carry out the monitoring of feeder line standing wave.

Claims (2)

1. an embedded air traffic control radar feeder line standing wave real-time monitoring device, it is characterized in that, described monitoring device comprises:

Bidirectional coupler, is arranged at radar transmitter in the feeder line of antenna, for incident power and the reflective power of feeder line of sampling;

Power selector switch, for selecting incident power or reflective power under control of the computer, and sends wave detector to;

Wave detector, for receiving incident power from power selector switch and reflective power, and timesharing exports the detected envelope of incident power and reflective power to sampling hold circuit;

Sampling hold circuit, exports the detecting circuit of the corresponding peak power of incident power and reflective power to A/D transducer for timesharing;

A/D transducer, for being converted to digital voltage signal by the analog voltage signal of corresponding peak power;

Computing machine, for described digital voltage signal being conversed corresponding incident power and reflective power, calculating the real-time standing wave value of feeder system, and judging whether this standing wave value exceedes safety door limit value.

2. embedded air traffic control radar feeder line standing wave real-time monitoring device according to claim 1, it is characterized in that, described monitoring device also comprises:

Display, for the real-time standing wave value that Display control computer sends;

Alarm, for when standing wave value exceedes safety door limit value, reports to the police under the instruction of computing machine.