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Precision approach path indicator field testing instrument

A tester and indicator technology, applied in the field of approach gradient indicator field testers, can solve the problems of inaccurate measurement of beam parameter transition zone width, high cost, large beam diameter, etc., so as to improve test methods and reduce operation Cost, Ease of Use

Active Publication Date: 2013-09-18
田荣生 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the observation is too close to the PAPI and the beam diameter is large, the beam parameters especially the transition zone width cannot be measured accurately
Under laboratory conditions, a further distance of about 300 meters can be used with the same setup, but it is not suitable for field testing
[0013] 3. Flight inspection, the pilot measures the light beam in the air, can measure various parameters, the measurement is accurate, but the cost is high, and it is troublesome to coordinate the adjustment between the sky and the ground

Method used

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  • Precision approach path indicator field testing instrument
  • Precision approach path indicator field testing instrument
  • Precision approach path indicator field testing instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 and figure 2 The basic structure of a visual approach slope indicator field tester is shown.

[0031] figure 1 Shown is a side view of a visual approach slope indicator field tester 112, comprising: a focusing lens 102, a target surface 109, an electronic lateral tilt angle sensor 104, an electronic vertical tilt angle sensor 105, a controller 106, a battery 108 , a cylindrical shell 103 with a handle, and a compass 107 for measuring the PAPI orientation.

[0032] figure 2 Shows the front view of the target face end. The switch 203 is a power switch. The digital meter 204 displays the horizontal inclination angle; the digital meter 205 displays the vertical inclination angle. Several photodetectors 206 measure the beam intensity. The digital meter 201 displays light intensity measurement data. Switch 202 selects which photodetector is displayed. The slit 208 is used to measure the vertical index angle at the center of the beam and the width of the tr...

Embodiment 2

[0040] image 3 Another possible structure of the display tester includes: focusing lens 102, a target panel 109, a high-resolution color CCD sensor 301, an electronic horizontal tilt angle sensor 104, an electronic vertical tilt angle sensor 105, and a control board 106 , battery 108, and three adjustable legs 110,111. During the test, a high-resolution color CCD sensor 301 collects the light intensity and color data on the target surface; the control board microprocessor calculates the transition zone width and light intensity distribution according to these data; The tilt angle data of the tester is used to calculate the indication angle and lateral tilt angle of the PAPI beam.

Embodiment 3

[0042] Figure 4 The PAPI automatic test station shown includes: a computer 401 , a rotating platform 402 and a tester 112 . The tested PAPI LHA 101 was placed on a rotating platform. A color linear CCD sensor is located in the center of the target panel. The optical sensor surface is at the focal point of the focusing lens 102 . The computer controls the rotation of the platform and collects and analyzes the data from the tester. Data includes: color linear CCD sensor and electronic tilt angle sensor output. The computer 401 calculates the light intensity distribution of the PAPI beam, the width of the transition zone, the pointing angle and the lateral inclination angle according to these data. Since the platform can rotate continuously, the computer 401 can obtain a continuous distribution curve of light intensity.

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PUM

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Abstract

The Field Testing Instrument (FTI) is designed for use in the regular maintenance and installation of airport Precision Approach Path Indicator (PAPI). The FTI is a self-contained and portable instrument that accurately measures the most important PAPI parameters, such as vertical aiming angle, transition angle, and light intensity. In addition to working with the current incandescent PAPIs, the FTI also measures parameters specific to the next generation LED PAPI. The FTI uses modern, efficient technology to reduce the life-cycle cost of approach lighting systems. The FTI improves on traditional PAPI testing methods by directly measuring the PAPI light beam focused to a target plate, as if seen from the pilot perspective. Due to significantly improvements in measurement accuracy and reliability, the FTI may supplement and even replace costly flight checks for PAPI maintenance with ground based operation.

Description

technical field [0001] The invention discloses the invention of a precision approach slope indicator field tester, which relates to visual aids to navigation and field testers, more precisely, it provides a portable method for ground testing and verification of approach slope indicators PAPI and VASI instrument. Background technique [0002] The approach slope indicator PAPI and VASI systems rely on the color change of the multibeam light to guide the aircraft along the correct slope for landing. Since the size of the slope is very important for safe landing, the aviation management departments of various countries require regular testing and maintenance of the approach slope indicator system to improve the safety of aircraft landing. The most important parameters of the safety evaluation are as follows: [0003] 1. The light indicates the angle vertically. If the angle is too low or too high, accidents may occur when the plane lands. [0004] 2. Light intensity. The avia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00G01J1/42
Inventor 田荣生田勇
Owner 田荣生