CN104375024A - In-situ self-inspection and metering device and method of automatic test system - Google Patents
In-situ self-inspection and metering device and method of automatic test system Download PDFInfo
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Abstract
The invention discloses an in-situ self-inspection and metering device of an automatic test system. The in-situ self-inspection and metering device of the automatic test system comprises a main control computer, a first measurement and control module, a second measurement and control module, a test interface, a power module and a calibration instrument. The first measurement and control module is connected with the main control computer through a PXI bus. The second measurement and control module is connected with the main control computer through an LXI bus. The test interface is connected with the first measurement and control module and the second measurement and control module respectively. One end of the power module is connected with the main control computer, and the other end of the power module is connected with the test interface. The calibration instrument is connected with the test interface. The invention further provides an in-situ self-inspection and metering method. According to the in-situ self-inspection and metering device and the in-situ self-inspection and metering method of the automatic test system, the accuracy and the reliability of self-inspection results can be improved effectively, the self-inspection and metering period of the system is shortened, and the automation and informatization needs are met.
Description
Technical field
The present invention relates to a kind of original position self-inspection of Auto-Test System, measuring apparatus and method thereof.
Background technology
Auto-Test System, as comprehensive integrated test system, with overall technology index for measurand provides excitation, measures measurand input response.System accuracy index is by PXI cabinet, EMC(Electro Magnetic Compatibility) performance, system power supply, the factor such as cooling and program design impact.Test macro is regarded as the combination of independent test instrument by traditional metering method of offing normal, ignore the change of the test signal that test macro interconnection cable, switch, load etc. cause, instrument and meter performance index in a test system cannot be investigated, can not meet system reliability and accuracy requirement, metric results lacks integrality and authenticity.Metering of simultaneously offing normal needs regularly from test macro dismounting testing tool, wearing and tearing that system connector also can be caused unnecessary and stopping using.Off normal the metering carried out for independent instrument instrument in metering, its data processing and record also cannot meet robotization and information system requirement.
Summary of the invention
The object of the present invention is to provide a kind of original position self-inspection of Auto-Test System, measuring apparatus and method thereof, the self-inspection implemented under effectively avoiding manual intervention and the impact of metering on calibration result, improve accuracy and the reliability of self-inspection metric results, effective shortening System self-test metering cycle, the overall original position self-inspection of robotization and metering make calibration data process and storage meet robotization and information system requirement.
In order to achieve the above object, the present invention is achieved through the following technical solutions: a kind of original position self-inspection of Auto-Test System, measuring apparatus, be characterized in, based on the trunk mixed framework of PXI and LXI, comprises:
Main control computer;
First observing and controlling assembly, is connected by PXI bus with described main control computer;
Second observing and controlling assembly, is connected by LXI bus with described main control computer;
Test interface, is connected with described first observing and controlling assembly and the second observing and controlling assembly respectively;
Power module, one end is connected with described main control computer, and its other end connects described test interface;
Calibrated meter, is connected with described test interface.
Original position self-inspection, measuring apparatus comprise an adapter further, are arranged on and between described test interface and calibrated meter, for message exchange.
The first described observing and controlling assembly is divided into high-level first observing and controlling assembly and low level first observing and controlling assembly; Wherein
Low level first observing and controlling assembly comprises the first stimulating module, switch module and the first test module.
Described high-level first observing and controlling assembly comprises multimeter card;
First stimulating module comprises data collecting card AO passage, the DO passage of data collecting card and resistance card;
Switch module comprises switch matrix card and multiplexer card;
First test module comprises the AI passage of data collecting card and the DI passage of data collecting card.
The second described observing and controlling assembly is divided into high-level second observing and controlling assembly and low level second observing and controlling assembly; Wherein
Low level second observing and controlling assembly comprises the second stimulating module and the second test module.
Described high-level second observing and controlling assembly comprises frequency meter;
Second stimulating module comprises AWG (Arbitrary Waveform Generator);
Second test module comprises oscillograph.
An original position self checking method for Auto-Test System, is characterized in, comprises following steps:
A1, main control computer control the output signal that high-level first observing and controlling assembly measures the first stimulating module, power module and the second stimulating module, gauge tap module change-over switch is to travel through all high-level first observing and controlling assembly Measure Channels simultaneously, according to output signal and measured signal error, complete the mutual inspection of high-level first observing and controlling assembly and the first stimulating module, the second stimulating module and power module, complete the detection of switch module simultaneously;
A2, main control computer control the frequency parameter that the second stimulating module output signal measured by high-level second observing and controlling assembly, according to output signal and measured signal error, complete the mutual inspection of high-level second observing and controlling assembly and the second stimulating module;
A3, main control computer control the first test module and the second test module measures the second stimulating module output signal, according to output signal and measured signal error, completes the mutual inspection of the first test module and the second test module and the second stimulating module.
An original position metering method for Auto-Test System, is characterized in, comprises following steps:
B1, main control computer control the measurement standard of high-level first observing and controlling assembly and high-level second observing and controlling assembly Measurement and calibration instrument output, according to measured signal error, complete the metering to high-level first observing and controlling assembly and high-level second observing and controlling assembly;
B2, main control computer control the output signal that high-level first observing and controlling assembly measures the first stimulating module and power module, gauge tap module change-over switch is to travel through all high-level first observing and controlling assembly Measure Channels simultaneously, according to measured signal error, complete and measure the metering of high-level first observing and controlling assembly to the first stimulating module and power module, complete switch module simultaneously and detect;
B3, main control computer control the frequency parameter that the second stimulating module output signal measured by high-level second observing and controlling assembly, according to measured signal frequency error, complete and measure high-level second observing and controlling assembly to the metering of the frequency parameter that the second stimulating module outputs signal;
B4, main control computer control the first test module and the second test module and measure the output signal of having measured the second stimulating module, according to measured signal error, complete and measure the metering of the second stimulating module to the first test module and the second test module.
The measurement standard that described step B1 alignment instrument exports is voltage, resistance and periodic basis's metering signal.
The original position self-inspection of a kind of Auto-Test System of the present invention, measuring apparatus and method thereof compared with prior art have the following advantages: the present invention utilizes the computer for controlling of Auto-Test System self as the main control computer of self-inspection and metering, effective simplification system resource, improves System Computer kinetic force; The present invention utilizes separate unit external calibration instrument to realize the overall original position self-inspection of robotization and the metering of system, maximize the configuration reducing external resource to need, cost-saving, improve System Computer kinetic force, fully meet convenience and the operability of when Auto-Test System is applied to production, testing ground, carrying out system meters; The present invention, without the need to system internal test resource and system being departed from, realizes the self-inspection of system original position and metering, avoiding the system of carrying out for separate unit instrument and meter in metering of offing normal and dismantling the unnecessary wearing and tearing of the system connector that causes; The overall original position self-inspection of the Auto-Test System robotization that the present invention realizes and metering, the self-inspection implemented under effectively avoiding manual intervention and the impact of metering on calibration result, improve accuracy and the reliability of self-inspection metric results, effective shortening System self-test metering cycle, the overall original position self-inspection of robotization and metering make calibration data process and storage meet robotization and information system requirement.
Accompanying drawing explanation
Fig. 1 is the original position self-inspection of a kind of Auto-Test System of the present invention, the one-piece construction schematic diagram of measuring apparatus;
Fig. 2 is embodiment of the present invention structured flowchart;
Fig. 3 is the schematic diagram of the original position metering method of Auto-Test System of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figures 1 and 2, a kind of original position self-inspection of Auto-Test System, measuring apparatus, based on the trunk mixed framework of PXI and LXI, comprise: main control computer 1, provided by Auto-Test System self, have PXI bus controller and Ethernet interface; First observing and controlling assembly 2, is connected by PXI bus with described main control computer 1; Second observing and controlling assembly 3, is connected by LXI bus with described main control computer 1; Test interface 4; Be connected with described first observing and controlling assembly 2 and the second observing and controlling assembly 3 respectively; Power module 5(six road programme-controlled dc power), based on RS485 bus, one end is connected with described main control computer 1, and its other end connects described test interface 4; Calibrated meter 6; Be connected with described test interface 4; One adapter 7, is arranged on and between described test interface 4 and calibrated meter 6.
As shown in Figure 2, the first described observing and controlling assembly is divided into high-level first observing and controlling assembly and low level first observing and controlling assembly; Wherein low level first observing and controlling assembly comprises the first stimulating module, switch module and the first test module.Multimeter card selected by the middle-and-high-ranking other first observing and controlling assembly of the present embodiment; First stimulating module selects DO passage and the resistance card of data collecting card AO passage, data collecting card; Switch module selects switch matrix card and multiplexer card; First test module selects the AI passage of data collecting card and the DI passage of data collecting card.
As shown in Figure 2, the second described observing and controlling assembly is divided into high-level second observing and controlling assembly and low level second observing and controlling assembly; Wherein low level second observing and controlling assembly comprises the second stimulating module and the second test module.The middle-and-high-ranking other second observing and controlling assembly selected frequency meter of the present embodiment; Second stimulating module selects AWG (Arbitrary Waveform Generator); Second test module selects oscillograph.
Main control computer 1 is the core of Auto-Test System, by self-inspection measuring software by calibrated meter 6, adapter 7 and Auto-Test System self are combined into one, automatically test macro self-inspection measurement technology scheme is completed, utilize the self-inspection function of measuring module performing concrete test assignment in self-inspection measuring software, control in the first observing and controlling assembly 2 and the second observing and controlling assembly 3, the stimulating module that can produce pumping signal as the first stimulating module and the second stimulating module produces self-inspection, metering signal, switch module switching signal path, the pumping signal that adapter 7 feedback excitation module sends is to the test interface 4 of Auto-Test System, in first observing and controlling assembly 2 and the second observing and controlling assembly 3, as the test modules such as the first test module and the second test module carry out signal measurement, self-inspection measuring software obtains self-inspection continuous data by the measuring-signal of test module, automatically self-inspection and metering is implemented in the mode of no manual intervention.Self-inspection measuring software, under LabVIEW Software Development Platform, adopts Modular Structure Design, realizes System self-test, metering two kinds of functions simultaneously.Software is divided into main control module, self-checking function module, function of measuring module, data interaction module and database module.Main control module calls self-inspection, function of measuring module perform concrete self-inspection, metering tasks, after functional module tasks carrying completes, data interaction module is responsible for notice main control module and is received self-inspection, metric results data, main control module reception result data calling data library module, the attribute information that database module contains according to packet, inquiry self-inspection, metering object information data storehouse, by self-inspection, metric results arrange, judge after stored in object information storehouse.Software module design structure is conducive to sharing out the work and helping one another of development, is easy to expansion and the upgrading of software maintenance and system simultaneously.
Adapter 7 is connected with test interface 4, specific in the present embodiment, inner for Auto-Test System AO, DO passage etc. as AWG (Arbitrary Waveform Generator), resistance card, data collecting card can be produced the stimulating module of signal; The test modules such as AI, DI passage of oscillograph, frequency meter, data collecting card; Multimeter card and the switch module such as switch matrix card, multiplexer card interconnected, with multimeter card, observing and controlling assembly that frequency meter equally accurate rank is higher, calibrate the observing and controlling assembly that all the other precision grades are lower, internal system transmits the self-inspection metering signal that stimulating module produces, coordinate switch module switching signal transmission channels with the inner all signal paths of Ergodic Theory, the inner integral calibration chain of corresponding test module Received signal strength measuring system constructing, automatically realize the totally tansitive of measurement standard in test macro inside, ensure the parameter traceability of metering value in test macro inside.Adapter 7 coordinates Auto-Test System to realize self-inspection and metering two kinds of functions simultaneously, the bridge that adapter 7 realizes as external calibration chain and internal calibration chain, low level first observing and controlling assembly lower to high-level first observing and controlling assembly higher for internal system precision grade, high-level second observing and controlling assembly and precision grade, low level second observing and controlling assembly is interconnected step by step, feed back its pumping signal to corresponding test module, under the control of main control computer 1, automatically realize self-inspection metering signal in close access transmission.
Calibrated meter 6 is connected with adapter 7 by cable, frequency and voltage parameter is provided to trace to the source with the separate unit external calibration equipment with many reference amounts calibration function to Auto-Test System, constructing system external calibration chain, realize calibration parameter by its exterior to inner accurate transmission, the application of separate unit calibrated meter effectively improves system maneuverability, fully meets convenience and the operability of carrying out system meters when Auto-Test System is applied to production, testing ground.Adopt model to be the multi-functional prover of FLUKE 5520A in the present embodiment, this prover measuring accuracy is high, good stability, arranges conveniently, meets the accuracy requirement of system calibration, have the good adaptability of technology.
An original position self checking method for Auto-Test System, comprises following steps:
A1, main control computer control the output signal of high-level first observing and controlling assembly measurement data acquisition card AO passage, the DO passage of data collecting card, resistance card, power module and the second stimulating module, gauge tap module change-over switch is to travel through all high-level first observing and controlling assembly Measure Channels simultaneously, according to output signal and measured signal error, complete the mutual inspection of high-level first observing and controlling assembly and the first stimulating module, the second stimulating module and power module, complete the detection of switch module simultaneously;
A2, main control computer control the frequency parameter that the second stimulating module output signal measured by high-level second observing and controlling assembly, according to output signal and measured signal error, complete the mutual inspection of high-level second observing and controlling assembly and the second stimulating module;
A3, main control computer control the first test module and the second test module measures the second stimulating module output signal, according to output signal and measured signal error, completes the mutual inspection of the first test module and the second test module and the second stimulating module.
An original position metering method for Auto-Test System, comprises following steps:
B1, main control computer control the measurement standard of high-level first observing and controlling assembly and high-level second observing and controlling assembly Measurement and calibration instrument output, according to measured signal error, complete the metering to high-level first observing and controlling assembly and high-level second observing and controlling assembly;
B2, main control computer control the output signal that high-level first observing and controlling assembly measures the first stimulating module and power module, gauge tap module change-over switch is to travel through all high-level first observing and controlling assembly Measure Channels simultaneously, according to measured signal error, complete and measure the metering of high-level first observing and controlling assembly to the first stimulating module and power module, complete switch module simultaneously and detect;
B3, main control computer control the frequency parameter that the second stimulating module output signal measured by high-level second observing and controlling assembly, according to measured signal frequency error, complete and measure high-level second observing and controlling assembly to the metering of the frequency parameter that the second stimulating module outputs signal;
B4, main control computer control the first test module and the second test module and measure the output signal of having measured the second stimulating module, according to measured signal error, complete and measure the metering of the second stimulating module to the first test module and the second test module.
The measurement standard that described step B1 alignment instrument exports is voltage, resistance and periodic basis's metering signal.
As shown in Figure 3, specific in the present embodiment, a kind of original position metering method of Auto-Test System, is also called three grades of metered scheme, comprises following steps:
An original position self checking method for Auto-Test System, comprises following steps:
A1, main control computer control multimeter card measurement data acquisition card AO passage, the DO passage of data collecting card and the output signal of resistance card, power module and AWG (Arbitrary Waveform Generator), gauge tap matrix card and multiplexer card change-over switch are to travel through all multimeter card Measure Channels simultaneously, according to output signal and measured signal error, complete multimeter card and data collecting card AO passage, the DO passage of data collecting card and the mutual inspection of resistance card, AWG (Arbitrary Waveform Generator) and power module, complete the detection of switch matrix card and multiplexer card simultaneously;
The frequency parameter of A2, main control computer controlled frequency measurement amount AWG (Arbitrary Waveform Generator) output signal, according to output signal and measured signal error, completes the mutual inspection of frequency meter and AWG (Arbitrary Waveform Generator);
A3, the AI passage of main control computer control data capture card, the DI passage of data collecting card and oscilloscope measurement AWG (Arbitrary Waveform Generator) output signal, according to output signal and measured signal error, the mutual inspection of the AI passage of data acquisition card, the DI passage of data collecting card and oscillograph and AWG (Arbitrary Waveform Generator).
An original position metering method for Auto-Test System, comprises following steps:
B1, main control computer control the measurement standard (voltage, resistance signal and periodic basis's metering signal) of multimeter card and the output of frequency meter Measurement and calibration instrument, according to measured signal error, complete the metering to multimeter card and frequency meter;
The output signal of the AO passage of B2, main control computer control multimeter card measurement data acquisition card, the DO passage of data collecting card, power module and resistance card, gauge tap matrix card and multiplexer card change-over switch are to travel through all multimeter card Measure Channels simultaneously, according to measured signal error, complete and measure the metering of multimeter card to the DO passage of the AO passage of data collecting card, data collecting card, resistance card and power module, complete switch matrix card and multiplexer card detects simultaneously;
The frequency parameter of B3, main control computer controlled frequency measurement amount AWG (Arbitrary Waveform Generator) output signal, according to measured signal frequency error, completes and measures the metering of frequency meter to the frequency parameter that AWG (Arbitrary Waveform Generator) outputs signal;
B4, the AI passage of main control computer control data capture card, the DI passage of data collecting card and oscilloscope measurement have measured the output signal of AWG (Arbitrary Waveform Generator), according to measured signal error, complete and measure AWG (Arbitrary Waveform Generator) to the AI passage of data collecting card, the DI passage of data collecting card and oscillographic metering.
Wherein, step B1 is first order metered scheme, and step B2, B3 are second level metered scheme, and step B4 is third level metered scheme.
Three grades of metered scheme guarantee that measurement standard travels through inside all by school observing and controlling assembly by its exterior to inner accurate transmission and measurement standard, ensure by the tractability of calibration system metering value.
The self-inspection of Auto-Test System complete machine is carried out according to Auto-Test System internal mutual inspection chain, utilizes Auto-Test System self to realize inputting the first observing and controlling assembly 2 and the second observing and controlling assembly 3, exporting the inspection of correctness and annexation correctness.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. the original position self-inspection of Auto-Test System, a measuring apparatus, is characterized in that, based on the trunk mixed framework of PXI and LXI, comprise:
Main control computer;
First observing and controlling assembly, is connected by PXI bus with described main control computer;
Second observing and controlling assembly, is connected by LXI bus with described main control computer;
Test interface, is connected with described first observing and controlling assembly and the second observing and controlling assembly respectively;
Power module, one end is connected with described main control computer, and its other end connects described test interface;
Calibrated meter, is connected with described test interface.
2. original position self-inspection as claimed in claim 1, measuring apparatus, is characterized in that, comprise an adapter further, is arranged on and between described test interface and calibrated meter, for message exchange.
3. original position self-inspection as claimed in claim 1 or 2, measuring apparatus, it is characterized in that, the first described observing and controlling assembly is divided into high-level first observing and controlling assembly and low level first observing and controlling assembly; Wherein low level first observing and controlling assembly comprises the first stimulating module, switch module and the first test module.
4. original position self-inspection as claimed in claim 3, measuring apparatus, it is characterized in that, described high-level first observing and controlling assembly comprises multimeter card;
First stimulating module comprises data collecting card AO passage, the DO passage of data collecting card and resistance card;
Switch module comprises switch matrix card and multiplexer card;
First test module comprises the AI passage of data collecting card and the DI passage of data collecting card.
5. original position self-inspection as claimed in claim 1, measuring apparatus, it is characterized in that, the second described observing and controlling assembly is divided into high-level second observing and controlling assembly and low level second observing and controlling assembly; Wherein low level second observing and controlling assembly comprises the second stimulating module and the second test module.
6. original position self-inspection as claimed in claim 5, measuring apparatus, it is characterized in that, described high-level second observing and controlling assembly comprises frequency meter;
Second stimulating module comprises AWG (Arbitrary Waveform Generator);
Second test module comprises oscillograph.
7. an original position self checking method for Auto-Test System, is characterized in that, comprise following steps:
A1, main control computer control the output signal that high-level first observing and controlling assembly measures the first stimulating module, power module and the second stimulating module, gauge tap module change-over switch is to travel through all high-level first observing and controlling assembly Measure Channels simultaneously, according to output signal and measured signal error, complete the mutual inspection of high-level first observing and controlling assembly and the first stimulating module, the second stimulating module and power module, complete the detection of switch module simultaneously;
A2, main control computer control the frequency parameter that the second stimulating module output signal measured by high-level second observing and controlling assembly, according to output signal and measured signal error, complete the mutual inspection of high-level second observing and controlling assembly and the second stimulating module;
A3, main control computer control the first test module and the second test module measures the second stimulating module output signal, according to output signal and measured signal error, completes the mutual inspection of the first test module and the second test module and the second stimulating module.
8. an original position metering method for Auto-Test System, is characterized in that, comprise following steps:
B1, main control computer control the measurement standard of high-level first observing and controlling assembly and high-level second observing and controlling assembly Measurement and calibration instrument output, according to measured signal error, complete the metering to high-level first observing and controlling assembly and high-level second observing and controlling assembly;
B2, main control computer control the output signal that high-level first observing and controlling assembly measures the first stimulating module and power module, gauge tap module change-over switch is to travel through all high-level first observing and controlling assembly Measure Channels simultaneously, according to measured signal error, complete and measure the metering of high-level first observing and controlling assembly to the first stimulating module and power module, complete switch module simultaneously and detect;
B3, main control computer control the frequency parameter that the second stimulating module output signal measured by high-level second observing and controlling assembly, according to measured signal frequency error, complete and measure high-level second observing and controlling assembly to the metering of the frequency parameter that the second stimulating module outputs signal;
B4, main control computer control the first test module and the second test module and measure the output signal of having measured the second stimulating module, according to measured signal error, complete and measure the metering of the second stimulating module to the first test module and the second test module.
9. original position metering method as claimed in claim 8, is characterized in that, the measurement standard that described step B1 alignment instrument exports is voltage, resistance and periodic basis's metering signal.
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| CN111806722A (en) * | 2020-07-27 | 2020-10-23 | 中国人民解放军海军航空大学 | Integral in-situ automatic metering and metering method for airborne equipment comprehensive automatic test system |
| CN111806722B (en) * | 2020-07-27 | 2022-04-08 | 中国人民解放军海军航空大学 | Integral in-situ automatic metering and metering method for airborne equipment comprehensive automatic test system |
| CN112269364A (en) * | 2020-09-14 | 2021-01-26 | 北京电子工程总体研究所 | Fault positioning self-testing system and method |
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