RU2447475C1 - Apparatus for automatic testing of parameters of analogue, analogue-digital, digital-analogue and digital articles - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to a modular test apparatus (MTA) consisting of power supply modules, switching modules, modules for transmitting and modules for receiving analogue and digital signals, which are connected to an internal bus of the MTA, a built-in computer which controls the modules through the internal bus of the MTA, and the test article.

EFFECT: shorter time for testing and diagnosing articles, easier testing due to introduction of an interface module with a hardware and software complex for interfacing the MTA and the test article.

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Description

The present invention relates to automated testing devices, in particular to devices for testing digital-to-analog, analog-to-digital, digital and analog products of electronic equipment (REA). It can be used for testing (control), diagnostics, tuning and acceptance tests of complex objects of special equipment, which include interchangeable functional products (electronic modules).

There are many devices for testing and diagnostics of REA products, implemented, for example, in:

- “Automated system for diagnosing digital devices”, RF patent No. 2097827 from 11/27/1997 - [1];

- “Device for functional control of digital nodes”, application for invention of the Russian Federation No. 95112321 of July 18, 1995 - [2];

- “System for diagnosing digital devices”, RF patent No. 2127447 of 03/10/1999 - [3];

- “Software and hardware stand for the diagnosis of digital and microprocessor units”, RF patent No. 2324967 dated 05/20/2008 - [4];

- “Automated Diagnostic System”, application for invention of the Russian Federation No. 2007117102 dated 05/07/2007 - [5].

However, devices for testing and diagnostics of REA products according to [1], [2], [3], [4] and [5] cannot be applied to digital-analog, analog-to-digital and analog functional products of REA of complex objects of special equipment.

Just as, for example, “Device for monitoring analog objects”, according to the patent of the Russian Federation No. 2262128 of 10.10.2005 - [6], it cannot be applied to digital-analog, analog-to-digital and digital functional products of REA.

Known methods and devices that implement them for automated testing and diagnostics of parameters of analog, analog-digital, digital-analog and digital products, for example, according to the inventions:

- “A method for monitoring the electrical parameters of an amplifier, an automated system for monitoring the electrical parameters of an amplifier”, RF patent No. 2212674 of 03/10/1998, - [7],

- “Method for the synthesis of multi-parameter automated measuring systems”, RF patent No. 2220435 dated 12/27/2003 - [8],

- “Method for the diagnosis of equipment”, RF patent No. 2265236 dated November 27, 2005 - [9],

- “Systems and methods for providing a dynamic modular data processing device”, RF patent No. 2386163 dated 04/10/2010 - [10].

A common drawback of the methods and devices that implement them, according to [7], [8], [9] and [10] is that all of them are special cases of diagnostics of REA functional products of complex objects of special equipment, carried out according to the Technical Conditions (TU) on a specific product. And, thus, the above methods and devices that implement them, for testing and diagnostics have limited use.

At the same time, there are many devices for automated testing and diagnostics of parameters of analog, analog-digital, digital-analog and digital products, for example:

- “Automated system for monitoring electronic devices”, USSR copyright certificate No. 1683038 dated 10/07/1991 - [11],

- “Automated control system for parameters of electronic circuits”, RF patent No. 2106677 dated 03/10/1998, - [12],

- "Automated control system", patent of the Russian Federation No. 2150730 from 10.06.2000, - [13],

- “Automated control system”, RF patent No. 2156493 from 09/20/2000 - [14],

- “Automated control system”, RF patent No. 2248028 of 03/10/2005 - [15],

- "Device for monitoring electronic objects", RF patent No. 2324213 from 05/10/2008, - [16],

- “Portable software-diagnostic complex”, RF patent No. 2363975 of 08/10/2009, - [17],

- "Modular diagnostic controller", RF patent No. 2397469 from 08.20.2010, - [18],

- “Automated complex monitoring and diagnostics (options)”, RF patent No. 2257604 dated July 27, 2005 - [19],

- “Portable Diagnostic Complex”, RF patent No. 2340926 from 12/10/2008, - [20].

A common disadvantage of the above devices [11], [12], [13], [14], [15], [16],

[17], [18], [19] and [20] is that all of them are designed for testing and diagnostics of specific products and do not have the potential for widespread use for the diagnosis of various functional products of REA of complex objects of special application technology, carried out according to the Technical conditions (TU) for a specific product.

The prototype of the invention is a device for automated testing of parameters of analog, analog-digital, digital-analog and digital products, implemented in a fully functional control and measuring system (or in other words) in a modular test setup (MTU), for example, from National Instrument: http: // www.ni.com/russia - [21]. This, according to the prototype [21], a device for automated testing of parameters of analog, analog-digital, digital-analog, digital products, contains MTU from power supply modules, switch modules, output modules and reception modules of analog and digital signals connected to the MTU internal bus, built-in A computer that controls the modules on the MTU internal bus, as well as the product under test. Moreover, all MTU modules have standard connectors for computers and devices for power supplies, switches, and the output and reception of analog and digital signals, to which the product under test is connected using cables.

The disadvantages of the prototype is that often the tested product has non-standard connectors and its connection to the MTU modules causes certain difficulties, that is, it requires additional material and most importantly time costs. This is especially true for REA products of complex objects of special equipment, which may not be consistent with MTU modules. In addition, testing and diagnostics of REA products of complex objects of special equipment must be carried out strictly in accordance with the technical specifications for a specific product, which MTU [21] cannot achieve in its presented form (without an additional software and hardware complex).

Based on the above disadvantages, the tasks that follow from the need to use for testing and diagnostics of REA products complex objects of special equipment known by MTU are as follows:

- a significant reduction in the time of testing the product (or diagnostics, in the case of failure to test), that is, a significant reduction in the time of control measurements and their comparison with the reference;

- reducing the complexity of testing and diagnostics of REA products with the creation and issuance of a comprehensive report of control measurements;

- increasing the versatility of equipment used for testing and diagnostics for the entire range of REA products that are part of complex objects of special equipment.

These tasks are solved by the fact (the essence of the present invention) that a device for automated testing of parameters of analog, analog-digital, digital-analog and digital products, containing a modular test setup (MTU), consisting of power supply modules, switch modules, output modules and analog reception modules and digital signals connected to the MTU internal bus, a built-in computer controlling the modules on the MTU internal bus, and the product under test, an interface module with an appar is additionally introduced With a nuclear-software complex for matching MTU and the tested product, the interface module contains the first group of standard connectors for connecting to MTU modules and the second group of standard and non-standard connectors for connecting to the tested product, while the inputs and outputs of MTU modules are connected with inputs and outputs using standard connectors of the first group of the interface module, and the product under test is connected to the inputs and outputs of the second group via standard and non-standard connectors and cables th module.

The introduction of “an additional interface module with a hardware-software complex for matching MTU and the tested product” is necessary for matching specific REA products of complex objects of special equipment with standard MTU modules, which allows MTU to optimally and with minimal time costs work for testing and diagnostics of REA products.

The introduction of distinctive features: “the interface module contains the first group of standard connectors for connecting to MTU modules” and “the inputs and outputs of MTU modules are connected by cables with inputs and outputs using standard connectors of the first group of the interface module” is necessary for a single (when testing a series of similar products REA of complex objects of special equipment) of the relatively laborious connection of the interface module to MTU modules.

The introduction of the distinguishing feature: “the interface module contains a second group of standard and non-standard connectors for connecting to the test product” and “the test product using standard and non-standard connectors and cables is connected to the inputs and outputs of the second group of the interface module” is necessary for testing a series of CEA products of the same type with the possibility of their quick replacement, which will significantly reduce the complexity of testing and diagnostics of REA products of complex objects of special equipment.

In general, the use of the proposed device further increases the versatility of the prototype during testing and diagnostics for the entire range of CEA products that are part of complex objects of special equipment, since replacing the interface module for a specific type of CEA tested products creates the possibility of quick and effective testing of another type of CEA tested products . At the same time, the memory, built-in MTU computer memory initially contains the composition, sequence and number of diagnostics signals for the product parameters according to the technical requirements defined in the technical conditions for testing and diagnosing REA products.

Figure 1 schematically shows a device for automated testing of parameters of analog, analog-digital, digital-to-analog and digital products. Figure 2 shows a block diagram of the operation of the device. Figure 3 is an example of the interface of the test control panel of the integrated computer MTU. In Fig.4 - the result of the test: Checking the noise level and the regular components of the spectrum of the signal “fLC AR” and “fLC PR” (Spectral component of the noise of the cell in the AR mode). Figure 5 - the result of the test: Check attenuation of the signals “flC AR” and “fLC PR” (Output signal of the cell in the AP mode). In Fig.6 - the result of the test: Check attenuation of the signals “flC AR” and “fLC PR” (Noise cell signal in the absence of the output signal in AP mode).

The device contains in FIG. 1 a MTU (1) of modules (2) - (modules of power supplies, switch modules, output modules, and modules for receiving analog and digital signals) that are connected to the internal bus (3) of the MTU, as well as a built-in computer ( 4), controlling the modules (2) via the internal bus (3) of the MTU, and the tested product (5). In addition, an interface module (6) with a hardware-software complex (wired in ROM of the interface module) for matching MTU (1) and the test product (5) is added; the interface module (6) contains the first group of standard connectors for connecting to the modules (2) MTU and the second group of standard and non-standard connectors for connecting to the tested product (5), while the inputs and outputs of the MTU modules are connected by cables (7) with inputs and outputs using standard connectors of the first group of the interface module (6), and the test product (5 ) using standard and non-standard connectors and cables (8) it is connected to the inputs and outputs of the second group of the interface module (6).

The operation of the proposed device can be explained by the block diagram of its operation, shown in figure 2. Initially, the composition and number of testing signals and diagnostics of the parameters of the tested product (5) CEA are selected according to the technical requirements defined in the technical specifications of the product (5), and the composition and number of modules (2) MTU are arranged for the selected signals and specified requirements for them (1) ) For the parameters of a specific interface module (6) and the test product (5), testing and diagnostic programs are written in the memory of the computer built into MTU (1) computer (4). The field for connecting to the modules (2) MTU (1) with cables (7) with standard connectors of the interface module (6) and to the interface module (6) using non-standard connectors and cables (8) of the product (5) should include the test program. When you turn on the product testing program (5), the computer (4) through the bus (3) controls the modules (2) that provide the tested signals transmitted through the interface module (6) to the test product (5), from which response signals also through the interface module (6) go back to the modules (2) MTU (1). MTU modules (2) (1) receive the received signals, process them, and send them via the bus (3) to the integrated computer (4) for final processing. In this case, the sequence and number of signals for testing the parameters of the product (5) corresponds to the technical requirements determined by the technical conditions for the product (5) CEA.

If testing passes within the accepted tolerances, then the computer (4) built into MTU (1) gives the test result (protocol), writing it to memory and displaying it on a monitor screen or on paper (printer). If the test results are outside the accepted tolerances, then using the computer built in the MTU (1) computer (4), the product is diagnosed (5) in automatic or manual step-by-step mode (if in the automatic mode of the CEA product diagnostics it was not possible to identify a malfunction) with diagnostic results.

As one example of the creation and application of the proposed invention, a device for diagnosing a cell (electronic module) of a CEA product of a complex object of special equipment, namely a NSUM cell according to the technical conditions YK2.076.319TU, can be cited. We performed automated testing (checking) of working out the time for cell readiness and issuing ready signals, checking the spectral characteristics of the output signals, checking the time of establishing the frequency of the “fLC AR” and “fLC PR” signals when changing the code supplied to the cell, checking the ratio of the frequency of the “fLC AR” signals and “fLC PR” to f / 10 NSUM in the prescription mode, checking the issuance of the signal “TU _PG ” with various codes supplied.

So when checking the attenuation of the signals “fLC AR” and “fLC PR” according to the proposed invention using MTU with the interface module of the test product - device (cell NSUM), when applying 3 voltages takes about 3 hours, and checking this cell conventional methods take about 8 ÷ 9 hours. At the same time, to ensure testing (diagnostics) of this product - a cell without using the proposed proposed invention, there is a test bench for parameters worth about 1.5-2 million rubles.

The proposed device allows to reduce the time of testing and diagnostics, repair and development of products that are part of the complex objects of special equipment, and also allows to reduce the costs of product development, as it eliminates the need to develop special test and diagnostic (control) stands for each type of product.

We believe that the proposed device for testing the parameters of analog, analog-digital, digital-analog, digital products has all the criteria of the invention, since the combination of restrictive and distinctive features of the claims is new for testing and diagnostics of REA products of complex objects of special equipment and, therefore, meets the criterion " novelty";

- The totality of the features of the claims of the device for automated testing of parameters of analog, analog-digital, digital-analog, digital-analog, digital products is unknown at this level of technology and does not follow the well-known rules for diagnosing REA products of complex objects of special equipment, which proves compliance with the criterion of "inventive step";

- The introduction of the proposed device for automated testing of parameters of analog, analog-digital, digital-analog, digital products does not present any structural, technical and technological difficulties, which implies compliance with the criterion of "industrial applicability".

Literature

1. RF patent No. 2097827 from 11/27/1997, an Automated system for diagnosing digital devices.

2. Application for the invention of the Russian Federation No. 95112321 of 07/18/1995, the Functional control device of digital nodes.

3. RF patent No. 2127447 of 03/10/1999, the Diagnostic System of digital devices.

4. RF patent №2324967 dated 05/20/2008, Software and hardware stand for the diagnosis of digital and microprocessor units.

5. Application for invention of the Russian Federation No. 2007117102 dated 05/07/2007, Automated diagnostic system.

6. RF patent No. 2262128 of 10.10.2005, a device for monitoring analog objects.

7. RF patent No. 2212674 of 03/10/1998, a method for monitoring the electrical parameters of an amplifier, an automated system for monitoring electrical parameters of an amplifier.

8. RF patent №2220435 dated 12/27/2003, the Method of synthesis of multi-parameter automated measuring systems.

9. RF patent No. 2265236 dated November 27, 2005, a Method for diagnosing equipment.

10. RF patent No. 2386163 dated 04/10/2010, Systems and methods for providing a dynamic modular data processing device.

11. USSR author's certificate No. 1683038 of 10/07/1991, Automated control system for electronic devices.

12. RF patent No. 2106677 of 03/10/1998, an automated system for monitoring the parameters of electronic circuits.

13. RF patent No. 2150730 of 06/10/2000, Automated control system.

14. RF patent No. 2156493 of 09.20.2000, Automated control system.

15. RF patent №2248028 of 03/10/2005, Automated control system.

16. RF patent №2324213 from 05/10/2008, a device for monitoring electronic objects.

17. RF patent No. 2363975 of 08/10/2009, a portable software-diagnostic complex.

18. Patent of the Russian Federation No. 2397469 dated 20.08.2010, a modular diagnostic controller.

19. Patent of the Russian Federation No. 2257604 of July 27, 2005, an Automated complex for monitoring and diagnostics (options).

20. RF patent No. 2340926 from 12/10/2008, a portable diagnostic complex.

21. http://www.ni.com/russia (a full-featured instrumentation system of National Instrument - a modular test device (MTU)) - prototype.

Claims (1)

A device for automated testing of parameters of analog, analog-digital, digital-analog and digital products, containing a modular test setup (MTU), consisting of power supply modules, switch modules, output modules and analog and digital signal receiving modules connected to the MTU internal bus, a built-in computer , which controls the modules on the MTU internal bus, and the product under test, characterized in that an interface module with a hardware-software complex for coordinating MTU and a test are additionally introduced of the product being manufactured, the interface module contains the first group of standard connectors for connecting to MTU modules and a second group of standard and non-standard connectors for connecting to the tested product, while the inputs and outputs of MTU modules are connected by cables to the inputs and outputs using standard connectors of the first group of the interface module, and the product under test is connected to the inputs and outputs of the second group of the interface module using standard and non-standard connectors and cables.

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