CN201548398U - ARM technology-based handheld testing and diagnosing equipment for engine - Google Patents

Abstract

The utility model discloses an ARM technology-based handheld testing and diagnosing equipment for an engine, which is characterized in that an embedded platform interface card with a combination structure of ARM, FLASH and SDRAM is constructed; the FPGA technology is adopted for the integration of signal interface chips, such as sixteen paths of A/Ds, twenty four paths of I/Os, four paths of counters and the like on an acquisition interface card; the signal interface chips are integrated with an embedded platform through a self-defined bus, the equipment includes a built-in lithium battery, dispenses with an external power source for supply, and adopts a touch screen for man-machine interaction, thereby realizing the miniaturization and integration and portability; the embedded platform is a universal type, and different testing signals just require the design of the acquisition interface card, so that the better expansibility is obtained; and the equipment not only acquires quantitative failure symptoms through test data, but also realizes the recording of qualitative failure symptoms in a man-machine interaction manner, thereby expanding the source of failure knowledge.

Description

Engine handheld test diagnosis equipment based on the ARM technology

Technical field:

The utility model relates to Engine Block Test and fault diagnosis technology field, is a kind of engine handheld test diagnosis equipment based on the ARM technology specifically.

Background technology:

Be based on the data acquisition templates such as pci bus, isa bus, VXE bus and PC104 bus of industrial computer at present at the digital ATE (automatic test equipment) overwhelming majority of engine of different type of machines development, relate to a plurality of independent integrated circuit boards such as processor, storer, A/D collection, I/O template, quantity is many, make that the equipment integration degree is low, volume is big, inconvenient outfield portably uses, and extendability is not strong yet; Existing in addition test diagnosis equipment can only pass test data obtain quantitative failure symptom, and does not possess the means of obtaining qualitative failure symptom, makes that the failure message source is single, has influenced accuracy rate of diagnosis.

Summary of the invention:

The purpose of this utility model is the deficiency that overcomes above-mentioned prior art, and a kind of engine handheld test diagnosis equipment based on the ARM technology is provided, solve mainly that the integrated degree of the digital ATE (automatic test equipment) of existing engine is low, volume is big, inconvenient outfield portably uses, extendability does not reach problems such as the single and accuracy rate of diagnosis in failure message source is low by force.

In order to achieve the above object, the utility model is achieved in that the engine handheld test diagnosis equipment based on the ARM technology, it comprises housing, establish touch-screen, button on the front of housing, establish USB interface, signals collecting interface, switch and power connection on its side, establish handle on the one end, its special character is to establish embedded platform integrated circuit board and interface board in housing, establish data collecting plate card and battery at the back side of embedded platform integrated circuit board and interface board;

Establish the ARM embedded microprocessor on the embedded platform integrated circuit board, the ARM embedded microprocessor is connected with FLASH storer, SDRAM storer respectively by FLASH controller, sdram controller, be connected with touch-screen by lcd controller, be connected with power connection by circuit, be connected with the data acquisition module interface by bus, be connected with USB interface, keystroke interface, Ethernet interface, serial line interface and reservation expansion interface on the interface board by circuit; Establish USB interface, keystroke interface, Ethernet interface, serial line interface and reservation expansion interface on the interface board, USB interface is connected with USB device by circuit, and keystroke interface is connected with button on the housing;

Establish data acquisition module on the data collecting plate card, data acquisition module is made up of on-site programmable gate array FPGA, A/D conversion chip and multidiameter option switch, on-site programmable gate array FPGA comprises frequency counting module, digital counting module and A/D control module, can realize 4 tunnel frequency quantity counting, 24 road digital quantities collection and realize collection by control A/D conversion chip and multidiameter option switch to 16 tunnel analog quantitys;

Parts on embedded platform integrated circuit board, interface board and the data collecting plate card are connected by circuit;

Battery is connected with switch by circuit.

In the FLASH of embedded platform storer, place embedded Windows CE operating system, database and application program, fault diagnostic program in the application program mainly is made up of data analysis module, fault diagnosis module, and the data acquisition subroutine is set in FPGA.

The circulation of test data of the present utility model concerns as shown in Figure 8:

The data that collect are through after the data processing, carry out real-time curve and numeral demonstration on the one hand, be stored in simultaneously in the database of FLASH storer, enter data analysis module on the other hand, if discovery has fault, then start fault diagnosis module data are diagnosed, after diagnosis finishes fault data also is stored in database, the user can finish filling in of repair message according to diagnosis troubleshooting result in addition.Also but the log-on data playback function is analyzed stored history, changes fault diagnosis module then over to.

Engine handheld test diagnosis equipment based on the ARM technology of the present utility model, with the ARM embedded microprocessor is Master Control Center, it controls visit by bus to on-site programmable gate array FPGA, thereby realize the transmission of image data from on-site programmable gate array FPGA to the FLASH storer, the ARM embedded microprocessor is realized processing, demonstration, the fault diagnosis of data according to application program built-in in the FLASH storer.

Compared with the prior art engine handheld test diagnosis equipment based on the ARM technology of the present utility model has following good effect: 1, equipment has been realized miniaturization and integrated, and hand-holdable formula is carried; 2, both can obtain quantitative failure symptom, and also can realize the typing of qualitative failure symptom, expand the source of fault knowledge with interactive means from test data; 3, the embedded platform integrated circuit board is general, need only design analog input card at different test signals, thereby possesses stronger extendability.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation that fore shell of the present utility model is opened;

Fig. 3 is the structural representation that back cover of the present utility model is opened;

Fig. 4 is a hardware main assembly schematic diagram of the present utility model;

Fig. 5 is embedded platform theory of constitution figure of the present utility model;

Fig. 6 is data acquisition module theory of constitution figure of the present utility model;

Fig. 7 is software function figure of the present utility model;

Fig. 8 is that data stream of the present utility model transfers the registration of Party membership, etc. from one unit to another figure.

Embodiment:

In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and describe the engine handheld test diagnosis equipment of the utility model in detail based on the ARM technology.

Embodiment 1, referring to Fig. 1-8, is processed into housing 1, and touch-screen 2 and button 3 are arranged on the front of housing 1, and USB interface 4, signals collecting interface 5, switch 6 and power connection 7 are arranged on its side, fixed installation handle 26 on the one end; Embedded platform integrated circuit board 8 and interface board 9 are installed in housing 1, and at the back side of embedded platform integrated circuit board 8 and interface board 9 installation data analog input card 10 and battery 11, two superimposed is installed, and saves the space;

ARM embedded microprocessor 12 is installed on embedded platform integrated circuit board 8, ARM embedded microprocessor 12 by FLASH controller 28, sdram controller 29 respectively with FLASH storer 13, SDRAM storer 14, be connected with touch-screen 2 by lcd controller 15, be connected with power connection 7 by circuit, be connected with data acquisition module interface 16 by bus, by the USB interface 4 on circuit and the interface board 9, keystroke interface 30, Ethernet interface 17, serial line interface 18 with reserve expansion interface 19 and be connected; USB interface 4, keystroke interface 30, Ethernet interface 17, serial line interface 18 are installed on interface board 9 and are reserved expansion interface 19, USB interface 4 is connected with USB device by circuit, keystroke interface 30 is connected with button 3 on the housing 1;

Installation data acquisition module 20 on data collecting plate card 10, data acquisition module 20 is made up of on-site programmable gate array FPGA 21, A/D conversion chip 22 and multidiameter option switch 23, on-site programmable gate array FPGA 21 comprises frequency counting module 24, digital counting module 25 and A/D control module 27, can realize 4 tunnel frequency quantity counting, 24 road digital quantities collection and realize collection by control A/D conversion chip and multidiameter option switch to 16 tunnel analog quantitys;

With the parts on embedded platform integrated circuit board 8, interface board 9 and the data collecting plate card 10 by bus routinely technology be connected; Again battery 11 is connected with switch 6 by circuit, forms the hardware components of embedded testing diagnostic device.

Place embedded Windows CE operating system, database and application program in the FLASH of embedded platform storer 13, the fault diagnosis functions in the application program mainly are made up of data analysis module, fault diagnosis module; The data acquisition subroutine is set in FPGA.

Form the software section of embedded testing diagnostic device.

Engine handheld test diagnosis equipment based on the ARM technology of the present utility model, during work, 50 road general-purpose interfaces that external signal line interface and data acquisition board are provided are connected, after the energized, arm processor is loaded into SDRAM with Windows CE operating system and application program and moves.Behind touch-screen or button startup application's data acquisition function, arm processor sends acquisition instructions to FPGA, FPGA accepts instruction back execution data acquisition subroutine and finishes the counting of 4 tunnel frequency quantity, the collection of 24 road digital quantities and the collection of 16 tunnel analog quantitys, data after the collection are temporary in the buffer zone of FPGA, wait for reading of ARM, ARM further by bus from the buffer area reading of data to the FLASH storer, and the analyzing and diagnosing function of invokes application to data handle, analyze, demonstration and fault diagnosis.

The embedded application software of the engine handheld test diagnosis equipment based on the ARM technology of the present utility model is based on the exploitation of Windows CE operating system, can realize monitoring the aeroengine test run duty and auxiliary flight crew keeps in repair troubleshooting.The application software function comprises following several respects:

1) engine signal setting and demarcation

Realization is to the setting of the engine signal relevant information that will gather, and signal is demarcated the error of measuring passage to revise.

2) the real-time collection of engine signal, processing and demonstration

Finish each road real-time signal acquisition of engine, and processing and computing that the signal of gathering is correlated with, the real-time time curve of drawing out signal is so that the dynamic change of observation signal simultaneously, thereby monitor engine is in difference duty constantly.

3) data readback

Realization is used for the flight crew and after test run finishes each duty of engine is analyzed the playback of firing test data.The playback of data is to show with the course curve, by time-the parameter coordinate system draws each road acquisition parameter course curve, and possesses cursor chi function, mobile felt pen can be consulted current time and current physical quantity in the curve display district.Can also amplify to obtain more detailed data message the carrying out of test run curve is local.

4) fault diagnosis

The data-signal of gathering is analyzed, extracted failure symptom, and finish diagnostic reasoning process, instruct flight crew's maintenance troubleshooting by fault diagnosis module.

5) repair message filling in and uploading

The digitizing of relevant repair message is filled in the realization commissioning process, and uploads to the engine monitoring database.

6) download of information

Required user profile, aircraft and the engine informations etc. of realization system are downloaded from background data base.

Test diagnosis equipment of the present utility model not only is confined to engine, also can be used for the testing and diagnosing of the fault in other field.

Claims (1)

1. based on the engine handheld test diagnosis equipment of ARM technology, it comprises housing (1), establish touch-screen (2), button (3) on the front of housing (1), establish USB interface (4), signals collecting interface (5), switch (6) and power connection (7) on its side, establish handle (26) on the one end, it is characterized in that in housing (1), establishing embedded platform integrated circuit board (8) and interface board (9), establish data collecting plate card (10) and battery (11) at the back side of embedded platform integrated circuit board (8) and interface board (9);

Establish ARM embedded microprocessor (12) on the embedded platform integrated circuit board (8), ARM embedded microprocessor (12) is by FLASH controller (28), sdram controller (29) respectively with FLASH storer (13), SDRAM storer (14) connects, be connected with touch-screen (2) by lcd controller (15), be connected with power connection (7) by circuit, be connected with data acquisition module interface (16) by bus, by the USB interface (4) on circuit and the interface board (9), keystroke interface (30), Ethernet interface (17), serial line interface (18) is connected with reservation expansion interface (19); Establish USB interface (4), keystroke interface (30), Ethernet interface (17), serial line interface (18) on the interface board (9) and reserve expansion interface (19), USB interface (4) is connected with USB device by circuit, and keystroke interface (30) is connected with button (3) on the housing (1);

Establish data acquisition module (20) on the data collecting plate card (10), data acquisition module (20) is made up of on-site programmable gate array FPGA (21), A/D conversion chip (22) and multidiameter option switch (23), on-site programmable gate array FPGA (21) comprises frequency counting module (24), digital counting module (25) and A/D control module (27), can realize 4 tunnel frequency quantity counting, 24 road digital quantities collection and by control A/D conversion chip (22) and multidiameter option switch (23) realization collection to 16 tunnel analog quantitys;

Parts on embedded platform integrated circuit board (8), interface board (9) and the data collecting plate card (10) are connected by circuit;

Battery (11) is connected with switch (6) by circuit.

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