CN113068452B - Method for constructing software development platform of automatic test system - Google Patents
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- CN113068452B CN113068452B CN201218006535.1A CN201218006535A CN113068452B CN 113068452 B CN113068452 B CN 113068452B CN 201218006535 A CN201218006535 A CN 201218006535A CN 113068452 B CN113068452 B CN 113068452B
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Abstract
The invention discloses a method for constructing a software development platform of an automatic test system, which divides the software development platform into a test engineering modeling module and a test program execution module, and interfaces the test engineering modeling module and the test program execution module through a database file with a specific format. The test engineering modeling module combines the test resources and the interface adapter to model according to the test flow and the test index of the tested product, and establishes a test task tree, wherein the final stage of the task tree is a test point; the test engineering modeling module configures the incidence relation and the test parameters between each test point and the test function in the test function library; the test program execution module directly calls the test function library by loading the database file representing the test task, and executes the test function, thereby completing the test of the tested product. The software development platform of the automatic test system constructed by the invention is simple to operate, and testers can test products without software programming, so that the development period of test programs is shortened, and the development cost is reduced.
Description
Technical Field
The invention relates to a method for constructing a software development platform of an automatic test system, belonging to the field of automatic test systems.
Background
An Automatic Test System (ATS) is a generic term for a System that is generally controlled by a computer and can automatically complete excitation, measurement, data processing, display, and output Test results for a product to be tested. The ATS generally includes three major parts, namely, an Automatic Test Equipment (ATE), a Test Program Set (TPS), and a software development tool (also called a Test development platform). Currently, ATS is evolving from a single-function dedicated system to a multi-function general open system. The ATS has preliminarily realized the universality of functions after years of development, but the universality and the expansibility of test software are still difficult to realize. With the wide use of ATS in various fields and stages, the research on the universality of ATS software has gained more and more attention and achieved many results.
The ATS software technology is based on the computer general software technology and comprises the following steps: (1) an ATS software development environment; (2) ATS general test language; (3) ATS instrument control software technology. Wherein the universality of the software development environment is a difficult point of current research. The good universal ATS software development environment can shorten the development period, reduce the development cost and reduce the requirements of users on computer programming language, thereby facilitating the test of the tested products. The quality of the ATS software development platform is generally evaluated from the aspects of generality, usability, function completeness, hardware independence, extensibility, and the like. The existing ATS software development platform has certain limitations, such as: (1) the usability of the software development platform is not enough; (2) and the software development platform has insufficient universality.
Disclosure of Invention
In the prior art, an automatic test system software development platform is not easy to use, not good in universality and high in requirement on programming capability of testers. In order to solve the problems, the invention provides a method for constructing a software development platform of an automatic test system. The method divides a software development platform into two independent modules: the test engineering modeling module and the test program execution module are interfaced through a database file with a specific format. FIG. 1 is an architecture of an automated test system software development platform.
The software development platform construction method comprises the following steps:
(a) the software development platform comprises a test engineering modeling module and a test program execution module;
further, the method also comprises the following characteristics: in the step (a), the test engineering modeling module performs modeling by combining the test resources and the interface adapter resources according to the test flow and the test indexes of the tested product, and establishes a test task tree, wherein the final stage of the test task tree is each test point. And the test engineering modeling module configures the incidence relation and the test parameters between each test point and the test function in the test function library. The established test task tree and the configuration information of the tested product are stored in the form of a test engineering database file.
Further, the method also comprises the following characteristics: in the step (a), the test program execution module manages various information required for the operation of the test program by loading the test engineering database file representing the test task, and provides an operation environment of the test program. The test program execution module is also responsible for managing users, recording information of testers and test products, storing test data, generating test reports and the like;
further, the method also comprises the following characteristics: in the (a), the test engineering modeling module and the test program execution module are interfaced through a database file with a specific format;
(b) the test engineering modeling module comprises two parts of test information modeling and test strategy editing;
(c) the test information modeling comprises three parts of test resource management, information description of a tested product and interface adaptation definition;
further, the method also comprises the following characteristics: in the step (c), the test resource management mainly completes the selection and setting of the hardware required for testing the tested product, and by selecting the required hardware resource, accesses the hardware resource and the configuration database, displays the information of the name, the function, the interface definition and the like of the hardware resource, so that a user can establish the connection relationship between the tested product and the hardware resource when designing the interface adapter. All the selection and the setting of the module adopt graphical interfaces;
further, the method also comprises the following characteristics: in the step (c), the information description of the tested product relates to the model name, the function description, the product interface definition and the appearance picture information of the tested product, the information is input by a user according to the condition of the tested product by using a frame provided by a platform, and the platform stores the information into a database file according to a certain format;
further, the method also comprises the following characteristics: in the step (c), the interface adaptation definition refers to that a user defines a pin name of the interface adapter, and through a table provided by the module, the user can input an internal connection relationship of the interface adapter, a connection relationship between the interface adapter and a product to be tested, and a connection relationship between the interface adapter and a hardware resource. The process that the user inputs the information in the form of a table is the process that the user designs an interface adapter, and finally the module can store the information input by the user in the form of a database so as to be convenient for subsequent calling in an execution platform;
(d) the test strategy editing is a process for describing the test steps and the test flow. The test strategy editing module represents the test task in the form of a tree. The test task tree decomposes the test task into task groups, each task group can also comprise a plurality of test points, and the test points are executed according to the sequence specified by the user. The principle of test task tree decomposition is that each final test point is required to be realized by a single test function in a hardware resource test program function library;
(e) the test program execution module comprises a test program function library, test execution management and test information management;
further, the method also comprises the following characteristics: in the step (e), the test program function library is composed of a test function written based on the hardware resource driver, a test function for judging the test result, and a test function for test flow jump. Each test function of the test program function library has the characteristic of being directly executable;
further, the method also comprises the following characteristics: in the step (e), the test execution management realizes importing and analyzing the database file output by the test engineering modeling module, calls the test functions in the test program function library according to the database file, and controls the execution sequence of the test functions so as to complete the operation of the test program; the tested product is tested without software programming, and automatic operation is realized in the test program execution module by using the database file output by the test engineering modeling module, so that debugging, detection and fault judgment of the tested product are completed;
further, the method also comprises the following characteristics: in the step (e), the test information management includes management functions such as display and storage of test results, test data table management, user management, test task query, and the like.
The method for realizing the software development platform of the automatic test system has the advantages that the software development platform is clear in structure and strong in expansibility, the engineering modeling module and the test program execution module are tested through the database file interface with a specific format, meanwhile, the compiling process is not needed for testing a tested product, and testers do not need to have programming capability. Therefore, the software development platform can be used for rapidly and conveniently realizing the test of the tested product, and simultaneously reducing the development cost and shortening the development period.
Drawings
FIG. 1 is a diagram of an automated test system software development platform architecture;
FIG. 2 is a flow chart of an application of an automatic test system software development platform;
FIG. 3 test resource management application instance interface in test information modeling
FIG. 4 test information modeling application instance interface for information description of tested product
FIG. 5 interface adaptation definition application instance interface in test information modeling
Detailed Description
A method for constructing an automatic test system software development platform carried by test equipment based on a PXI bus is provided, and hardware resources in a test system mainly comprise data acquisition board cards.
The invention is applied to construct a software development platform matched with hardware resources in the test equipment. The hardware resources of the test equipment comprise a PXI bus-based data acquisition card PXI-4461, a matrix switch PXI-2501 and a digital multimeter PXI-4072. On the premise that the hardware resources can meet the test requirements of the tested product, the test of the tested product can be realized on the software development platform constructed by the embodiment.
Firstly, according to the hardware resources of the test equipment, under the software development platform framework provided by the invention, the hardware resources and the configuration database aiming at the test equipment are constructed. During construction, a database file named as an ATE resource database is established based on the Access database. The data information of the ATE resource database includes: the resource name (specifically: a matrix switch, a data acquisition card and a digital multimeter), the model (specifically: the matrix switch PXI-2501, the data acquisition card PXI-4461 and the digital multimeter PXI-4072), the PXI-2501 interface definition, the PXI-4461 interface definition and the PXI-4072 interface definition.
And then, constructing a test program function library according to the hardware resources. In this example, the test program is written based on LabVIEW, and the written test program includes functions of condition judgment and branch jump, which are used to judge the test result and determine the execution sequence of the test program. These functions are not directed to any hardware resources, and belong to basic functions inherent in the test program function library. Here, a function named "conditions.vi" is written, whose function is: and the logic result is used for judging whether the test data meets the given condition or not and outputting a true logic result or a false logic result. The judgment conditions include: greater than, less than, greater than or equal to, less than or equal to, within the target value range. Also written here is a function "branch.vi" for branch jumps, whose function is: and determining the step number of the next execution step according to the input logic.
In addition, based on a driver provided by hardware resources, a series of test functions are written in a labVIEW environment according to functions which can be realized by hardware, and a test program function library is formed.
Specifically, for the matrix switch PXI-2501, two test functions are written, which are respectively: the functions of the single switch and the single switch disconnect are respectively realized, and the single switch disconnect are used for controlling the node connection relation of the PXI-2501.
For a PXI-4461 data acquisition card, two test functions are compiled, wherein the test functions are respectively as follows: the functions of the ContinueAcqwave.vi and the ContinueGenWave.vi respectively realize continuous waveform acquisition and continuous waveform generation, and are used for sending or acquiring data through a PXI-4461 channel.
For PXI-4072, three test functions are written, namely MesVol.vi, MesRes-2W.vi and MesRes-4 W.vi. The functions are respectively as follows: measuring voltage, 2 wire system measuring resistance, and four wire system measuring resistance.
Thus, the test functions related to the hardware resources are seven in total, and form a test program function library together with the two basic test functions. Moreover, for each test function, the information needs to be written into the hardware resources and configuration database. In this example, a database file named "test function information" is created based on the Access database, which contains information for all 9 test functions. The table is used to describe the statistical information of the function library of the test program in the database. The fields thereof are: "FunName", "BellingToSource", "FunInfo", "Path". The meaning of the method is as follows: the name of the test function, the name of the test program function library, the function description and the path stored by the function. The 9 test functions correspond to 9 records, wherein the record contents of the test function "singleswitchcon. vi" are respectively as follows: "SingleSwitchCon", "PXI-2501", "single switch connection", "\\ PXI-2501Fun \ singleswitchcon.vi"
On the basis of constructing the hardware resource, configuration database and test program function library, according to the software architecture of the invention, a data acquisition system software development platform ute is compiled through labVIEW programming, and the functions of a test engineering modeling module and a test program execution module are realized.
The following describes a procedure for developing a test program on this platform, taking the test program for developing a certain product under test using ute as an example. The tested product is a self-test adapter and is used for self-testing PXI-4461. Fig. 2 is a flow chart of the development of the self-test adapter test program.
The development process of the self-checking adapter test program comprises the following steps:
s202, firstly, test information modeling is carried out on the self-test adapter test system. A user newly builds a model named as a self-checking system in a test engineering modeling module, the model comprises three parts, namely test resource management, tested product information description and interface adaptation definition, and the user sets each part respectively.
The hardware resources required to be used are selected by the user in the test resource management: PXI-4461 and PXI-2501, the software interface of which is shown in FIG. 3. The user can check the information of the hardware resource through the test resource management module. FIG. 3 shows information of matrix PXI-4461, specifically: the data acquisition system comprises resource names (PXI4461 data acquisition card), models (PXI-4461), interface definitions (node names: AI0+, AI0-, AI1+, AI1-, AO0+, AO0-, AO1+ AO 1-; and node descriptions: analog input 0 positive terminal, analog input 0 negative terminal, analog input 1 positive terminal, analog input 1 negative terminal, analog output 0 positive terminal, analog output 0 negative terminal, analog output 1 positive terminal and analog output 1 negative terminal).
The tested product information describes that the user inputs the basic information of the self-checking adapter. The method specifically comprises the following steps: the name (data acquisition card self-test equipment), the model (2011-1), the function description (used for PXI-4461 equipment self-test), the interface definition (node name: UUT-AI0+, UUT-AI0-, UUT-AO0+, UUT-AO0-) and the like of the self-test adapter, and the software interface is shown in FIG. 4.
The user defines the connection relationship between the self-test adapter and the hardware resource according to the interface definition of the self-test adapter, and the software interface is as shown in fig. 5. The connection relation is described by three parts of 'testing resource-adapter', 'adapter-tested object' and 'adapter inside'. The name of each connection point of the test resource-adapter is as follows: "ATE-ITA-AI 0 +", "ATE-ITA-AI 0-", "ATE-ITA-AO 0 +", "ATE-ITA-AO 0-", "ATE-ITA-COM 0-", "ATE-ITA-COM 0 +", "ATE-ITA-CH 0-". The nodes connected by the name of each connection point are respectively: "AI 0+, ITA 11", "AI 0-, ITA 12", "AO 0+, ITA 13", "AO 0-, ITA 14", "COM 0-, ITA 15", "COM 0+, ITA 16", "CH 0, ITA 17". The description of the "adapter-to-test object" and "adapter internal" are the same as the description of the "test resource-adapter".
S204, next, editing the test strategy of the self-test adapter. And describing the test flow on the basis of the established self-checking system model. The invention expresses the test task in the form of tree, and decomposes the test task into each task group, and each task group can also comprise a plurality of test points;
this example is divided into two test task groups, PXI-4461 channel 0 self-test and PXI-4461 channel 1 self-test. The PXI-4461 channel 0 self-test task group is divided into: step 1, sending an analog signal, step 2, collecting the analog signal, step 3, connecting a switch, step 4, judging a result, and step 5, disconnecting the switch, wherein each testing step is a testing point. The test strategy editing also needs to associate a test function for each test point, and the test functions respectively associated with the 5 test points are as follows: "continueacqwave. vi", "continuegenwave. vi", "singleswitchcon. vi", "conditions. vi", "singleswitchdiscon. vi". The 5 test functions are sequentially executed when the test program runs, and the test of the test task group is completed.
S206, on the basis of editing the test strategy, the test engineering modeling module stores the model established by the user in the form of a database file. The database file contains all the information created by the user in steps S202, S204. For example, in the test task, the execution of the test task point "switch connection" corresponds to the execution of the test function "singleswitchcon.vi". To perform this function, the input parameter information described in the database file includes: the parameter names are: "Switch Device", "Topology Name", "Switch Channel 1", "Switch Channel 2"; the parameter values are as follows: "dev 7", "2501/1-Wire 48x1 Amplified Mux", "/dev 7/ch 0", "/dev 7/com 0".
S208, reading a database file of the self-test adapter test system established by a user in a test program execution module, and displaying the test steps on an execution platform in a test task tree form;
s210, reading test function information associated with each test step in the self-test adapter database file. For example, when choosing to execute "PXI-4461 channel 0 self-test task group", the first step is "send analog signal", which is essentially to execute the test function "ContinueAcqWave.vi". To execute the function, the input parameter information of the function is first read from the self-test adapter database file. The input parameter information of this test function includes: the parameter name specifically includes: "Physical Channels", "Minimum Value", "Maximum Value", "Sample Clock Rate", "Buffer Parameters-size (samples)", "Waveform Type", "Frequency", "Amplitude"; the runtime parameter values are respectively: "dev 6/ao 0", "-10", "20000", "5000", "Sine Wave", "997", "1". And configuring and executing the test function according to the input parameter information. Each subsequent execution step is performed according to the method.
S212, displaying the test result, and saving the test result according to the user requirement. In this example, the test results are stored in the form of excel table, and the content thereof includes the output result of the step 2 of collecting the analog signals and the result judgment in the step 4 according to the output result. In the test program execution module of this example, after the "PXI-4461 channel 0 self-test task group" is executed, the obtained test result is: "amplitude: 1.1V "," frequency: 998Hz "," results: PXI-4461 channel 0 self-test passed ".
The software development platform constructed by the invention realizes the specific process of developing the test program of the self-checking adapter. The software development platform of the automatic test system constructed by the method of the invention is used by the testers to develop the test program of the tested product, so that the requirements on the testers can be reduced, the development period is shortened, and the development cost is reduced.
The above description is only a preferred example of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A method for constructing a software development platform of an automatic test system is characterized by comprising the following steps:
the test system comprises a test engineering modeling module and a test program execution module;
the test engineering modeling module is used for modeling by combining test resources and an interface adapter according to a test flow and a test index of a tested product, and establishing a test task tree, wherein the final stage of the task tree is each test point; the test engineering modeling module configures incidence relation and test parameters between each test point and a test function in a test program function library; the test engineering modeling module comprises two parts of test information modeling and test strategy editing; the established test task tree and configuration information of the tested product are stored in the form of a test engineering database file;
the test program execution module manages various information required by the test program operation by loading a test engineering database file, and provides an operation environment of the test program; the test program execution module is also responsible for managing the user, recording the information of the testers and the test products, storing the test data and generating a test report, and is characterized in that:
the test information modeling comprises three parts of test resource management, information description of a tested product and interface adaptation definition;
the test resource management mainly completes the selection and the setting of hardware required by the test of the tested product, accesses the hardware resources and the configuration database by selecting the required hardware resources, and displays the name, the function and the interface definition information of the hardware resources so that a user can establish the connection relation between the tested product and the hardware resources when designing an interface adapter;
the information description of the tested product relates to the model name, the function description and the product interface definition of the tested product; the information is input by a user according to the condition of a product to be tested by using a frame provided by a platform, and the platform stores the information into a database file according to a certain format;
the interface adaptation definition refers to the definition of the name of a contact pin of an interface adapter by a user, and the user can input the internal connection relation of the interface adapter, the connection relation of the interface adapter and a tested product and the connection relation of the interface adapter and a hardware resource through a table provided by a test engineering modeling module; the process of inputting the information by the user is the process of designing an interface adapter by the user, and finally the test engineering modeling module can store the information input by the user in a database form so as to be convenient for subsequent calling in an execution platform;
the test strategy editing is to describe the test steps and the test flow, and the test task is decomposed into task groups by using a test task tree, wherein each task group comprises a plurality of test points, and the test points are executed according to the sequence specified by a user; the test task tree decomposition is to require that each final test point can be realized by a single function in a test program function library;
the test strategy editing can also configure the incidence relation and the test parameters between each test point and the test function in the test program function library.
2. The method of claim 1, wherein the test program execution module comprises a test program function library, test execution management and test information management;
the test program function library consists of a test function compiled based on a hardware resource driver, a test function used for judging a test result and a test function used for test flow jumping; each test function of the test program function library has the characteristic of being directly executable;
the test execution management realizes importing and analyzing the database file output by the test engineering modeling module, calls the test functions in the test program function library according to the database file, and controls the execution sequence of the test functions so as to complete the operation of the test program; the tested product is tested without software programming, and automatic operation is realized in the test program execution module by using the database file output by the test engineering modeling module, so that debugging, detection and fault judgment of the tested product are completed;
the test information management comprises the functions of displaying and storing test results, managing test data tables, managing users and inquiring and managing test tasks.
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| CN108776723A (en) * | 2018-05-23 | 2018-11-09 | 中国电子科技集团公司第四十研究所 | Test System self-test adapter line generation method, device, equipment and storage medium |
| CN109359025A (en) * | 2018-08-14 | 2019-02-19 | 中国电子科技集团公司第二十九研究所 | A kind of electronic information equipment Auto-Test System and test method |
| CN110162463A (en) * | 2019-04-19 | 2019-08-23 | 平安普惠企业管理有限公司 | Method for testing software, device and electronic equipment based on automated test tool |
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| CN111984435A (en) * | 2020-08-20 | 2020-11-24 | 中电科仪器仪表有限公司 | Method and system for executing and debugging test program |
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| CN108776723A (en) * | 2018-05-23 | 2018-11-09 | 中国电子科技集团公司第四十研究所 | Test System self-test adapter line generation method, device, equipment and storage medium |
| CN108776723B (en) * | 2018-05-23 | 2022-02-08 | 中国电子科技集团公司第四十一研究所 | Test system self-checking adapter connection line generation method, device, equipment and storage medium |
| CN109359025A (en) * | 2018-08-14 | 2019-02-19 | 中国电子科技集团公司第二十九研究所 | A kind of electronic information equipment Auto-Test System and test method |
| CN109359025B (en) * | 2018-08-14 | 2022-08-02 | 中国电子科技集团公司第二十九研究所 | Automatic test system and test method for electronic information equipment |
| CN110162463A (en) * | 2019-04-19 | 2019-08-23 | 平安普惠企业管理有限公司 | Method for testing software, device and electronic equipment based on automated test tool |
| CN111966572A (en) * | 2020-08-18 | 2020-11-20 | 中电科仪器仪表有限公司 | Description method and device based on signal-oriented test description model |
| CN111966572B (en) * | 2020-08-18 | 2024-04-26 | 中电科思仪科技股份有限公司 | Description method and device based on test description model facing signal |
| CN111984435A (en) * | 2020-08-20 | 2020-11-24 | 中电科仪器仪表有限公司 | Method and system for executing and debugging test program |
| CN116359716A (en) * | 2023-05-31 | 2023-06-30 | 深圳市华测半导体设备有限公司 | Method, system and medium for dynamic allocation of test resources in IC tester |
| CN116359716B (en) * | 2023-05-31 | 2023-08-04 | 深圳市华测半导体设备有限公司 | Method, system and medium for dynamic allocation of test resources in IC tester |
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