Antenna detection method of avionics communication equipment

Abstract

The invention discloses an antenna detection method for avionics communication equipment, and the method comprises the following steps: S1, carrying out the detection of a defect-free antenna of the avionics communication equipment through transmitting the same ultrasonic detection signal for many times through an ultrasonic detection array, and obtaining a detection signal; s2, determining the maximum difference value of the echo signals under the condition of no defect; s3, detecting the antenna of the avionics communication equipment to be detected through the ultrasonic detection signal transmitted by the ultrasonic detection array to obtain a detection signal; and S4, according to the detection signal obtained in the step S3, judging whether the antenna of the avionics communication equipment to be detected has defects and positioning the defects. According to the invention, the detection and positioning of the physical defects of the antenna can be effectively realized based on an ultrasonic detection method.

Description

Technical Field

[0001] The present invention relates to avionics communication equipment, and in particular to an antenna detection method for avionics communication equipment. Background Art

[0002] Avionics communication equipment is an important part of the avionics system, including satellite communication equipment, radio navigation system, aviation radio communication system, etc. They play an important role in aerospace and aviation, such as providing reliable, stable and secure communication services, ensuring smooth communication between spacecraft, and ensuring data transmission between spacecraft and ground control center; providing global coverage communication capabilities for spacecraft, enabling spacecraft to communicate with ground control center at any place and time, and achieving all-weather, seamless communication guarantee; providing high-bandwidth communication capabilities to meet the high-speed requirements of spacecraft for data transmission, ensuring that spacecraft can timely transmit the collected data, images, videos and other information to the ground control center; the types of failures of avionics communication equipment are mainly divided into internal electrical failures and physical defects of antennas of avionics communication equipment; general detection is for the inspection and maintenance of electrical failures inside avionics communication equipment, but it is difficult to perform relatively accurate detection of physical defects of antennas. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an antenna detection method for avionics communication equipment, which can effectively detect and locate physical defects of the antenna based on an ultrasonic detection method.

[0004] The object of the present invention is achieved through the following technical solution: an antenna detection method for avionics communication equipment, comprising the following steps:

[0005] S1. For an antenna of an avionics communication device without defects, the same ultrasonic detection signal is emitted multiple times through an ultrasonic detection array to obtain a detection signal;

[0006] S2. Determine the maximum difference of the echo signal in the absence of defects;

[0007] S3. For the antenna of the avionics communication equipment to be tested, an ultrasonic detection signal emitted by an ultrasonic detection array is detected to obtain a detection signal;

[0008] S4. According to the detection signal obtained in step S3, determine whether the antenna of the avionics communication equipment to be tested has defects and locate the defects.

[0009] The beneficial effects of the present invention are as follows: the method based on ultrasonic detection of the present invention can effectively realize the detection and positioning of physical defects of the antenna, and does not require complex machine learning algorithms or ultrasonic imaging. It only needs to analyze the echo amplitude data to realize the detection and positioning of physical defects. The method is simple and practical. At the same time, since the present invention obtains the maximum difference with the average value through multiple detections, when obtaining the maximum difference, the element with the largest difference is selected, which can reflect the boundary conditions of the defects and provide a more accurate basis for defect judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0011] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0012] like Figure 1 As shown, an antenna detection method for avionics communication equipment is characterized by comprising the following steps:

[0013] S1. For an antenna of an avionics communication device without defects, the same ultrasonic detection signal is emitted multiple times through an ultrasonic detection array to obtain a detection signal;

[0014] In step S1, it is assumed that the ultrasonic detection array includes a plurality of ultrasonic detection modules, each of which includes an ultrasonic transmitting probe and an ultrasonic receiving probe; the ultrasonic transmitting probe is used to transmit ultrasonic waves to the detection target, and the ultrasonic receiving probe is used to receive the echo signal reflected by the detection target.

[0015] The step S1 comprises:

[0016] S101. Assume that there are M ultrasonic detection modules, each of which is used to detect an area of ​​the antenna of the avionics communication equipment. Perform amplitude detection on the echo signal detected by each ultrasonic detection module to obtain the echo amplitudes of the M ultrasonic modules, which are recorded as A1, A2, ..., A M ; The vector x formed by the echo amplitudes of the M ultrasonic modules is [A1, A2, ..., A M ] as a detection signal;

[0017] S102. For the antenna of the avionics communication equipment without defects, perform N detections according to step S101, and the obtained detection signals are recorded as x1, x2, ..., x N .

[0018] In the step S1, when performing N signal detections, the ultrasonic detection array is located at the same position and transmits ultrasonic waves in the same direction.

[0019] S2. Determine the maximum difference value of the echo signal in the absence of defects;

[0020] The step S2 comprises:

[0021] S201. Calculate the average value of the detection signal obtained by N detections

[0022]

[0023] S202. The detection signals x1, x2, ..., x obtained by N detections are N Subtract Get N detection signals and average value The difference between them is denoted as x1′,x′2,...,x′ N ;

[0024] S203. Determine the maximum difference x′ of the echo signal in the absence of defects MAX :

[0025] x′ MAX =MAX{x1′,x′2,...,x′ N};

[0026] That is: MAX means taking the maximum value, x′ MAX The i-th element in is x1′, x′2, ..., x′ N The maximum value among the i-th element in , i = 1, 2, …, M.

[0027] S3. For the antenna of the avionics communication equipment to be tested, an ultrasonic detection signal emitted by an ultrasonic detection array is detected to obtain a detection signal;

[0028] The ultrasonic signal emitted by the ultrasonic detection array in step S3 is the same as the ultrasonic signal emitted by the ultrasonic detection array in step S1.

[0029] The ultrasonic detection array in step S3 and the ultrasonic detection array in step S1 have the same position for sending ultrasonic signals.

[0030] S4. According to the detection signal obtained in step S3, determine whether the antenna of the avionics communication equipment to be tested has defects and locate the defects.

[0031] The step S4 comprises:

[0032] S401. Record the detection signal obtained in step S3 as vector y=[A1′, A2′, ..., A′ M ], where the element A in the vector i ′ represents the amplitude of the echo signal received by the i-th ultrasonic detection module when detecting the antenna of the avionics communication equipment to be tested, i=1,2,…,M;

[0033] Subtract the average value of the detection signal from the vector y The difference value of the actual signal is obtained, recorded as y′;

[0034] S402. Add y′ and x′ MAX For comparison, if the i-th element in y′ is smaller than x′ when i=1,2,…,M MAX If the ith element in is , it is considered that the antenna of the avionics communication equipment to be tested has no defects;

[0035] Otherwise, when i = 1, 2, ..., M, if the i-th element in y' is greater than x' MAX If the ith element in , it is considered that there is a defect in the area detected by the ith ultrasonic detection module.

[0036] The above is a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An antenna detection method for avionics communication equipment, characterized in that: The following steps are involved: S1. For an antenna of an avionics communication device without defects, the same ultrasonic detection signal is emitted multiple times through an ultrasonic detection array to obtain a detection signal; S2. Determine the maximum difference value of the echo signal in the absence of defects; S3. For the antenna of the avionics communication equipment to be tested, an ultrasonic detection signal emitted by an ultrasonic detection array is detected to obtain a detection signal; S4. According to the detection signal obtained in step S3, determine whether the antenna of the avionics communication equipment to be tested has defects and locate the defects.

2. The antenna detection method of avionics communication equipment according to claim 1, characterized in that: In step S1, it is assumed that the ultrasonic detection array includes a plurality of ultrasonic detection modules, each of which includes an ultrasonic transmitting probe and an ultrasonic receiving probe; the ultrasonic transmitting probe is used to transmit ultrasonic waves to the detection target, and the ultrasonic receiving probe is used to receive the echo signal reflected by the detection target.

3. The antenna detection method of avionics communication equipment according to claim 2, characterized in that: The step S1 comprises: S101. Assume that there are M ultrasonic detection modules, each of which is used to detect an area of ​​the antenna of the avionics communication equipment. Perform amplitude detection on the echo signal detected by each ultrasonic detection module to obtain the echo amplitudes of the M ultrasonic modules, which are recorded as A1, A2, ..., A M ; The vector x formed by the echo amplitudes of the M ultrasonic modules is [A1, A2, ..., A M ] as a detection signal; S102. For the antenna of the avionics communication equipment without defects, perform N detections according to step S101, and the obtained detection signals are recorded as x1, x2, ..., x N .

4. The antenna detection method of avionics communication equipment according to claim 3, characterized in that: In the step S1, when performing N signal detections, the ultrasonic detection array is located at the same position and transmits ultrasonic waves in the same direction.

5. The antenna detection method of avionics communication equipment according to claim 3, characterized in that: The step S2 comprises: S201. Calculate the average value of the detection signal obtained by N detections S202. The detection signals x1, x2, ..., x obtained by N detections are N Subtract x respectively to get the difference between N detection signals and the average value x, recorded as x1′, x′2, ..., x′ N ; S203. Determine the maximum difference x′ of the echo signal in the absence of defects MAX : x′ MAX =MAX{x1′,x′2,...,x′ N }; That is: MAX means taking the maximum value, x′ MAX The i-th element in is x1′, x′2, ..., x′ N The maximum value among the i-th element in , i = 1, 2, …, M.

6. The antenna detection method of avionics communication equipment according to claim 1, characterized in that: The ultrasonic signal emitted by the ultrasonic detection array in step S3 is the same as the ultrasonic signal emitted by the ultrasonic detection array in step S1.

7. The antenna detection method of avionics communication equipment according to claim 1, characterized in that: The ultrasonic detection array in step S3 and the ultrasonic detection array in step S1 have the same position for sending ultrasonic signals.

8. The antenna detection method of avionics communication equipment according to claim 5, characterized in that: The step S4 comprises: S401. Record the detection signal obtained in step S3 as vector y=[A1′, A2′, ..., A′ M ], where the element A in the vector i ′ represents the amplitude of the echo signal received by the i-th ultrasonic detection module when detecting the antenna of the avionics communication equipment to be tested, i=1,2,…,M; Subtract the average value x of the detection signal from the vector y to obtain the difference value of the actual signal, which is recorded as y′; S402. Add y′ and x′ MAX For comparison, if the i-th element in y′ is smaller than x′ when i=1,2,…,M MAX If the ith element in is , it is considered that the antenna of the avionics communication equipment to be tested has no defects; Otherwise, when i = 1, 2, ..., M, if the i-th element in y' is greater than x' MAX If the ith element in , it is considered that there is a defect in the area detected by the ith ultrasonic detection module.

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