CN112130009A

CN112130009A - Flying parameter time-sharing test system

Info

Publication number: CN112130009A
Application number: CN202010821232.9A
Authority: CN
Inventors: 于勇; 宋威; 刘生桂; 韩海青
Original assignee: Shaanxi Qianshan Avionics Co Ltd
Current assignee: Shaanxi Qianshan Avionics Co Ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2020-12-25

Abstract

The embodiment of the disclosure provides a flight parameter time-sharing test system, which belongs to the technical field of avionics and specifically comprises a control module, a conditioning module and a switch module; the test system receives an excitation signal of the exciter, conditions the signal through the conditioning module, is connected to the switch module, receives a serial port command sent by the upper computer, processes the serial port command, controls the switch module to switch channels in a time-sharing mode, achieves time-sharing output of the excitation signal, and completes time-sharing test of multiple flight parameter products. According to the method and the device, the excitation signals of the flying parameter products are output to the channels in a time-sharing mode, so that the time-sharing test of a plurality of flying parameter products is realized, the test resources are reduced, and the test efficiency is improved.

Description

Flying parameter time-sharing test system

Technical Field

The disclosure relates to the technical field of avionics, in particular to a flight parameter time-sharing test system.

Background

In the process of environmental test, the flying ginseng product needs to be tested at a specific stage. At present, in order to improve the efficiency of the environmental test of the flying ginseng products, a plurality of flying ginseng products are placed in a test box to be tested simultaneously for the flying ginseng products with the same environmental test conditions. In the environmental test process, when the test condition meets the requirement, the product needs to be tested, general flying parameter product test equipment can only test one flying parameter product, when the test box is completely closed, only an external test cable can be used for connection test, and a plurality of products can only complete all tests by a plurality of test equipment.

Because the flying parameter products have various and large number of signals and large volume of test equipment, when a plurality of test equipment simultaneously carry out environmental tests, the occupied volume is large, the resource waste is large, and the plurality of test equipment can not automatically test, so that the test efficiency is low.

Disclosure of Invention

In view of this, the embodiment of the present disclosure provides a flying parameter time-sharing test system, which solves the problems that only one flying parameter product can be tested, multiple flying parameter products cannot be tested simultaneously, the test efficiency is low, and the test operation process is irregular in the environmental test process.

In order to achieve the above purpose, the present disclosure provides the following technical solutions:

a time-sharing test system for flight parameters comprises an exciter and a plurality of tested products, and comprises a control module P2, a conditioning module P3 and a switch module P4;

the test system receives an excitation signal of an exciter, conditions the signal through the conditioning module P3, is connected to the switch module P4, and the control module P2 receives a serial port command sent by an upper computer, processes the serial port command, and controls the switch module P4 to switch channels in a time-sharing manner, so that the time-sharing output of the excitation signal is realized, and the time-sharing test of a plurality of flight parameters is completed.

In a preferred embodiment, the device further comprises a dc power supply module P1, and the dc power supply module P1 provides working power for the control module P2, the conditioning module P3 and the switch module P4.

In a preferred embodiment, the dc power module P1 inputs a 220VAC ac signal and outputs a 12VDC, 5VDC dc signal.

In a preferred embodiment, the power supply power of the dc power supply module P1 is not less than 100W.

In a preferred embodiment, the control module P2 receives an RS232 serial port command through an interface driving circuit, the signal is connected to the FPGA module through a serial port circuit, and the FPGA outputs a control signal to the switch module after analyzing and resolving data according to a serial port communication protocol, so as to control the switch module to perform channel time-sharing switching.

In a preferred embodiment, the conditioning module P3 inputs ac signals and ac ratio signals, and performs power amplification adjustment on the input signals and outputs the signals to the switching module P4, while maintaining the signal characteristics.

In a preferred embodiment, the switch module P4 uses relays to complete the switching of the multi-way switch and ensure that the relays do not generate signal interference.

In a preferred embodiment, the service life of the relay is > 5 × 105 operations.

In a preferred embodiment, in the switch module P4, the impedance of the relay circuit used by the ethernet bus and the GJB289A bus needs to meet the requirements of bus design specifications to ensure that signals do not generate interference.

In a preferred embodiment, the method further comprises the steps of acquiring the acquired values of the plurality of flying parameter products by using a maintenance bus, and comparing the acquired values with the transmission values of the exciter to realize the closed-loop test of the plurality of flying parameter products.

The invention provides a flying parameter time-sharing test system, which can simultaneously connect a plurality of flying parameter products by outputting excitation signals of the flying parameter products through relay time-sharing switching, switches the same signal to different output channels according to an upper computer command, obtains a flying parameter product acquisition value by using a maintenance bus, compares a transmission value with the acquisition value, realizes the closed-loop test of the flying parameter products, can realize that one test device simultaneously tests a plurality of flying parameter products, can realize automatic test, reduces the number of test devices, reduces the occupied area of the test device, and improves the test efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a system composition diagram of the present invention;

FIG. 2 is a control module schematic of the present invention;

FIG. 3 is a schematic diagram of a conditioning module of the present invention;

fig. 4 is a schematic diagram of a switch module of the present invention.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be further noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than being drawn according to the number, shape and size of the components in actual implementation, and the type, number and proportion of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The embodiment of the disclosure provides a flight parameter time-sharing test system.

Referring to fig. 1-4, a flying ginseng time-sharing test system receives a flying ginseng product excitation signal, performs signal conditioning through a conditioning module P3, and is then connected to a switch module P4. A control module P2 in the system receives an RS232 serial port command sent by an upper computer, and after the serial port command is processed, a switch module P4 is controlled to switch relay signals, so that time-sharing output of excitation signals is realized, and time-sharing testing of a plurality of flying parameter products is completed. The method mainly comprises the following steps: a direct current power supply module P1, a control module P2, a conditioning module P3 and a switch module P4.

The direct current power supply module P1 inputs 220VAC alternating current signals and outputs 12VDC and 5VDC direct current signals, and can provide working power supply for the control module P2, the conditioning module P3 and the switch module P4, and the power is not less than 100W.

The control module P2 receives RS232 serial port signals through the interface driving circuit, the signals are connected to the FPGA module after passing through the serial port circuit, the FPGA analyzes and resolves data according to a serial port communication protocol, and then outputs control signals to the switch module to control the switch module to switch channels in a time-sharing mode.

The conditioning module P3 mainly performs power amplification of the ac signal and conditioning and outputting of the ac ratio signal. Because the alternating current signal voltage is large, the effective value is as high as more than 210V, when the signals are provided for a plurality of flight parameter devices, voltage attenuation occurs because the power of a single-path signal is low, and therefore power amplification is needed. The alternating current ratio signal is output after signal conversion by using the alternating current signal output by the flight parameter product as an excitation source, so that separate signal conditioning is required.

The switch module P4 is controlled by a control module, the relay is used for switching 1000 multi-way switches, common signals are switched by a common relay, and the problems of line impedance, attenuation and the like need to be considered when designing special buses such as Ethernet, GJB289A buses and the like, so that the circuit design is ensured to meet the requirements of bus design specifications, and the signals do not generate interference. Service life of relay is more than 5X 10⁵And the secondary operation ensures the reliability requirement of long-time and frequent switching use of the relay switch.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A flying parameter time-sharing test system comprises an exciter and a plurality of flying parameter products, and is characterized by comprising a control module, a conditioning module and a switch module;

the test system receives an excitation signal of the exciter, conditions the signal through the conditioning module, is connected to the switch module, receives a serial port command sent by the upper computer, processes the serial port command, controls the switch module to switch channels in a time-sharing mode, achieves time-sharing output of the excitation signal, and completes time-sharing test of multiple flight parameter products.

2. The time-sharing test system for flight parameters according to claim 1, further comprising a dc power supply module, wherein the dc power supply module provides operating power for the control module, the conditioning module and the switch module.

3. The time-sharing test system for flight parameters according to claim 2, wherein the dc power module inputs a 220VAC ac signal and outputs a 12VDC, 5VDC dc signal.

4. The time-sharing test system for the flight parameters of claim 2, wherein the power supply power of the direct-current power supply module is not less than 100W.

5. The flight parameter time-sharing test system according to claim 1, wherein the control module receives an RS232 serial port command through the interface driving circuit, the signal is connected to the FPGA module after passing through the serial port circuit, and the FPGA outputs a control signal to the switch module after analyzing and resolving data according to a serial port communication protocol, so as to control the switch module to perform channel time-sharing switching.

6. The time-sharing test system for the flying parameters according to claim 1, wherein the input of the conditioning module is an alternating current signal and an alternating current ratio signal, and the input signal is subjected to power amplification conditioning and output to the switching module while the signal characteristics are kept unchanged.

7. The time-sharing test system for the flight parameters according to claim 1, wherein the switch module uses a relay to complete the switching of the multi-way switch and ensure that the relay does not generate signal interference.

8. The time-sharing test system of claim 7, wherein the relay service life > 5 x 10⁵And (5) performing secondary operation.

9. The time-sharing test system for the flight parameters according to claim 7, wherein impedances on relay circuits used by the switch module including an ethernet bus and a GJB289A bus need to meet bus design specification requirements to ensure that signals do not generate interference.

10. The time-sharing test system for the flight parameters of claim 1, further comprising a maintenance bus for acquiring the collected values of the plurality of flight parameter products, and comparing the collected values with the sending values of the exciter to realize the closed-loop test of the plurality of flight parameter products.