CN115237013A

CN115237013A - Universal interface adapter suitable for single board module test

Info

Publication number: CN115237013A
Application number: CN202210815147.0A
Authority: CN
Inventors: 孙爱国; 刘华磊; 叶博宏
Original assignee: Shaanxi Qianshan Avionics Co Ltd
Current assignee: Shaanxi Qianshan Avionics Co Ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-10-25

Abstract

The utility model provides a general interface adapter suitable for veneer module test belongs to avionics test technical field, specifically include signal adapter and UUT interface support, carry out detachable physical connection through 150 core connectors between signal adapter and the UUT interface support, signal adapter provides excitation signal switching and switching to the UUT measured piece, provide working power supply, realize the secondary power monitoring of measured piece, realize the two port RAM data reading of measured piece, realize functions such as remote control signal data interaction. Through the processing scheme, the requirement of batch test under the high-low temperature environment of different signal modules in the current domestic flight parameter system is met.

Description

Universal interface adapter suitable for single board module test

Technical Field

The application relates to the field of avionic testing, in particular to a universal interface adapter suitable for testing a single board module.

Background

The flight parameter system is a device for automatically collecting and recording various flight data, audio data and video data according to a convention format in the flight process of an airplane, and the data reflects the working state and the operation condition of a pilot when the airplane flies. The performance, quality and accuracy of recorded data of the flight parameter system directly influence the daily aircraft service of the airplane, the elimination of hidden trouble and fault, the development of a new airplane type, the search and rescue of the airplane in case of crash, and the like.

At present, the test of a flight parameter system is generally only performed on the system and a single piece of equipment, and the test of a board card in the system must be matched with a case to be assisted by a flight parameter internal field detection processor to perform a complete machine test, so that the electrical performance of the component board can be tested, and the complete machine test is only performed on a signal configured by a certain product, and the test of a full channel and a full interface can not be realized on a single board.

However, the flight reference system single board test equipment generally only realizes the test of a single board card under normal temperature work, and when testing different types of board cards, an interface adapter corresponding to a physical interface needs to be redesigned, and the wide universality is not achieved.

Disclosure of Invention

In view of this, the present application provides a universal interface adapter suitable for testing a single board module, which solves the problems in the prior art, and meets the requirements of batch testing of different signal modules in a domestic flight parameter system under high and low temperature environments.

The utility model provides a general interface adapter suitable for veneer module test adopts following technical scheme:

a universal interface adapter suitable for testing a veneer module comprises a signal adapter and a UUT interface bracket, wherein the signal adapter is physically connected with the UUT interface bracket in a detachable mode through a core connector.

Optionally, the signal adapter internally includes: the signal switching unit receives an excitation signal from the signal simulation equipment through an excitation signal input interface, the excitation signal is provided for the UUT interface bracket after switching and distribution, the power supply module converts 28V working voltage externally provided for the interface adapter into 3.3V and 5V voltage, and a working power supply is provided for the main control unit, the signal switching unit and the UUT tested piece.

Optionally, the signal switching transit unit provides a 150-core physical interface, and is physically connected with the UUT interface support.

Optionally, the main control unit includes: the system comprises a main control peripheral physical interface, a micro control unit and an ID identification and control unit;

the master control peripheral physical interface comprises a remote control interface, a signal interface board ID interface, a power supply and an internal bus interface, and the signal simulation equipment controls and exchanges data with the signal adapter through the remote control interface; the ID interface of the signal interface board receives an ID identification signal of the UUT detected piece, and is used for distinguishing the UUT detected pieces of different slot positions, and the power supply and the internal bus interface perform data interaction with the UUT detected piece, and monitor a secondary power supply and collected data of the UUT detected piece;

the micro control unit comprises an MEM, an MCU and an EPROM, controls the ID recognition and control unit to carry out data interaction of the UUT tested piece, and simultaneously transmits the interactive data to the signal simulation equipment;

the ID identifying and controlling unit includes: ID discernment, bus logic control and power supply control module realize the secondary power supply control of UUT measured piece, distinguish 5 UUT measured pieces according to ID identification signal, monitor the secondary working power supply of UUT measured piece, little the control unit controls ID discernment and the control unit.

Optionally, the UUT interface bracket includes an external chassis and an internal signal interface board, and a locking device is disposed on the external chassis and used for firmly connecting the signal adapter and the UUT interface bracket; the internal signal interface board is provided with 5 same connectors for physically connecting with 5 UUT tested pieces.

Optionally, a chassis is arranged outside the signal adapter, and a fan and an excitation signal connector are arranged outside the chassis; the excitation signal connector provides a physical connection for an external excitation signal that enters the interface adapter through the excitation signal input interface.

To sum up, the application comprises the following beneficial technical effects:

1. the interface adapter is the universalization test equipment, when testing the signal module of different grade type, only needs to change corresponding UUT interface support, alright satisfy the signal module of different grade type.

2. The UUT interface support is designed with 5 same physical connectors, can test 5 signal modules of the same type simultaneously, and improves working efficiency in the batch production process of the signal modules.

3. The overall arrangement has cooling fan on the interface adapter machine case, satisfies the environmental suitability test of being surveyed the piece, and operating temperature is: -55 ℃ to +85 ℃ humidity: 5-85% (no condensation).

4. The interface adapter provides functions of secondary power supply monitoring, double-port RAM data reading and writing and the like of a tested piece.

5. The interface adapter adopts split design, the weight is reduced, the volume is reduced, the weight is about 12Kg, and the interface adapter is easy to transport and carry.

Drawings

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

Fig. 1 is a schematic diagram of the interior of the interface adapter of the present application.

FIG. 2 is a general block diagram of an interface adapter of the present application.

Detailed Description

Embodiments of the present application are described in detail below with reference to the accompanying drawings.

The following embodiments of the present application are described by specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. 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 given herein without making any creative effort, shall fall within the protection scope of the present application.

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 present application, 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 noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio 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 application provides a universal interface adapter suitable for testing a single board module.

As shown in fig. 1 and fig. 2, a universal interface adapter suitable for testing a single board module includes a signal adapter and a UUT interface bracket, and the signal adapter and the UUT interface bracket are physically and detachably connected with each other through a 150-core connector.

The signal adapter internally comprises: the signal switching unit receives an excitation signal from the signal simulation equipment through an excitation signal input interface, the excitation signal is provided for the UUT interface bracket after switching and distribution, the power supply module converts 28V working voltage externally provided for the interface adapter into 3.3V and 5V voltage, and a working power supply is provided for the main control unit, the signal switching unit and the UUT tested piece.

The signal switching unit provides a 150-core physical interface and is in physical connection with the UUT interface bracket.

The master control unit includes: the system comprises a main control peripheral physical interface, a micro control unit and an ID identification and control unit.

The master control peripheral physical interface comprises a remote control interface, a signal interface board ID interface, a power supply and an internal bus interface, and the signal simulation equipment controls and exchanges data with the signal adapter through the remote control interface; the ID interface of the signal interface board receives an ID identification signal of the UUT detected piece, the ID identification signal is used for distinguishing the UUT detected pieces in different slot positions, the power supply and the internal bus interface perform data interaction with the UUT detected piece, and the secondary power supply and the acquired data of the UUT detected piece are monitored.

The micro control unit comprises a MEM, an MCU and an EPROM, controls the ID recognition and control unit to carry out data interaction of the UUT tested piece, and simultaneously transmits the interactive data to the signal simulation equipment.

The ID identifying and controlling unit includes: the system comprises an ID identification module, a bus logic control module and a power supply control module, secondary power supply monitoring of the UUT detected piece is achieved, 5 UUT detected pieces are distinguished according to an ID identification signal, a secondary working power supply of the UUT detected piece is monitored, and a micro control unit controls the ID identification and control unit.

The UUT interface bracket comprises an external case and an internal signal interface board, and a locking device is arranged on the external case and used for firmly connecting a signal adapter with the UUT interface bracket; the internal signal interface board is provided with 5 same connectors for physically connecting with 5 UUT tested pieces.

A case is arranged outside the signal adapter, a fan and an excitation signal connector are arranged outside the case, and the fan is used for dissipating heat of the interface adapter in a high-temperature test environment to meet the environment test requirements of a UUT tested piece; the excitation signal connector provides a physical connection for an external excitation signal that enters the interface adapter through the excitation signal input interface.

The interface adapter physical dimension (wxhxd) is about: 383mm x 264mm x 250mm, the weight is about 12Kg, and the portable, portable and light-weight portable device is light and usable.

The specific working steps are as follows: 1) The signal simulation equipment sends excitation signals to the signal switching and switching unit, the signal switching and switching unit switches 1 path of excitation signals into 5 paths of excitation signals to be provided for the signal interface board, and the signal interface board is distributed to 5 UUT tested pieces to realize external excitation signal collection of the UUT tested pieces.

2) After the UUT tested piece receives the excitation signal, the collected signal is analyzed, packaged and sorted, and then the data is transmitted to the main control unit through the internal bus. Meanwhile, the UUT detected piece sends the ID identification signal of the UUT detected piece to the main control unit.

3) After receiving the internal bus data and the ID identification signal, the main control unit distinguishes the data of 5 UUT tested pieces according to the ID identification signal, distinguishes the data of interaction of the UUT tested pieces, simultaneously monitors the real-time working voltage value of the UUT tested pieces by the ID identification and control unit, and then uploads the data of interaction and the working voltage value of the UUT tested pieces to the signal simulation equipment through the LAN (Ethernet) of the remote control interface. The monitored working voltage value can reflect the real-time working condition of the UUT tested piece.

4) The signal simulation equipment analyzes and restores the interactive UUT detected piece data according to a preset data format, the restored data is compared with the excitation signal, and if the comparison result is within a set error range, the UUT detected piece is judged to be qualified; otherwise, the UUT measured piece is unqualified.

5) The power supply module converts 28V working voltage externally provided for the interface adapter into 3.3V and 5V voltage, provides working power supply for the main control unit and the signal switching unit, and simultaneously provides working power supply for the UUT tested piece by the main control unit.

6) A fan and an excitation signal connector are arranged outside the signal adapter case, and the fan is used for dissipating heat of the interface adapter in a high-temperature test environment to meet the environment test requirements of a UUT tested piece; the excitation signal connector provides a physical connection for an external excitation signal that enters the interface adapter through the excitation signal input interface.

The application provides a general interface adapter suitable for veneer module test, this interface adapter adopts the components of a whole that can function independently design, comprises signal adapter and UUT interface support, carries out physical connection through 150 core connectors between signal adapter and the UUT interface support. When testing different UUT to be tested, then directly change UUT interface support can, signal adapter then is for the universalization design, can carry out the compatibility and use, satisfies the test requirement of different veneer modules. The utility model provides a general interface adapter suitable for veneer module test adapts to the test requirement of novel flight parameter system integrated circuit board module, strengthens integrated circuit board module's test depth and width, improves automatic efficiency of software testing, satisfies signal integrated circuit board environmental suitability test requirement, realizes the interface adapter of universalization, cooperates signal simulation equipment to realize the test of UUT quilt survey integrated circuit board.

The above description is only for the specific embodiments of the present application, but the scope of the present application 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 application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a general interface adapter suitable for veneer module test which characterized in that, includes signal adapter and UUT interface support, carries out detachable physical connection through the core connector between signal adapter and the UUT interface support.

2. The universal interface adapter adapted for single board module testing according to claim 1, wherein said signal adapter internally comprises: the signal switching unit receives an excitation signal from the signal simulation equipment through an excitation signal input interface, the excitation signal is provided for the UUT interface bracket after switching and distribution, the power supply module converts 28V working voltage externally provided for the interface adapter into 3.3V and 5V voltage, and a working power supply is provided for the main control unit, the signal switching unit and the UUT tested piece.

3. The universal interface adapter for single board module testing as claimed in claim 2, wherein said signal switching transition unit provides a 150-core physical interface for physical connection with a UUT interface cradle.

4. The universal interface adapter adapted for single board module testing according to claim 3, wherein said main control unit comprises: the system comprises a main control peripheral physical interface, a micro control unit and an ID identification and control unit;

the master control peripheral physical interface comprises a remote control interface, a signal interface board ID interface, a power supply and an internal bus interface, and the signal simulation equipment controls and exchanges data with the signal adapter through the remote control interface; the ID interface of the signal interface board receives an ID identification signal of the UUT detected piece, the ID identification signal is used for distinguishing the UUT detected pieces in different slot positions, the power supply and the internal bus interface perform data interaction with the UUT detected piece, and the secondary power supply and the acquired data of the UUT detected piece are monitored;

the micro control unit comprises a MEM, an MCU and an EPROM, controls the ID identification and control unit to carry out data interaction on the UUT detected piece, and simultaneously transmits the interactive data to the signal simulation equipment;

5. The universal interface adapter adapted for on-board module testing of claim 1, wherein said UUT interface bracket comprises an external chassis and an internal signal interface board, said external chassis having a locking device disposed thereon for securely connecting the signal adapter to the UUT interface bracket; the internal signal interface board is provided with 5 same connectors for physically connecting with 5 UUT tested pieces.

6. The universal interface adapter suitable for testing a single board module according to claim 1, wherein a chassis is disposed outside the signal adapter, and a fan and an excitation signal connector are disposed outside the chassis; the excitation signal connector provides a physical connection for an external excitation signal that enters the interface adapter through the excitation signal input interface.