RU2789824C1 - Method for information interaction between equipment when testing i/o devices - Google Patents

Abstract

FIELD: computing technology.

SUBSTANCE: invention relates to computing technology, to a method for information interaction of equipment between devices. In the method, the exchanges of a transit device with I/O devices and the monitoring equipment with the transit device are synchronised by interruption. After sending a data packet to the transit device, the monitoring equipment waits for an interruption. After receiving data from the I/O device and generating diagnostic information, the transit device generates an interruption in the monitoring equipment. After receiving an interruption, the monitoring equipment reads the information from the transit device. The maximum wait time is set. The monitoring equipment repeats the data transmission to the transit device up to several times.

EFFECT: eliminated non-functional delays from the information wait by the monitoring equipment from the transit device, which may be caused by incorrect estimation of the information wait time; synchronous information exchange, which prevents premature reading of data from the transit device in the event of violation of the exchange of the transit device with the I/O device and the need for repeat information exchange therewith.

2 cl, 3 dwg

Description

SUBSTANCE: invention relates to computer engineering, namely to a method of information interaction of equipment when testing electronic input/output devices and organization of the computing process of testing electronic input/output devices.

There is a known method of information interaction of equipment when testing electronic devices in the production process, using diagnostic tests, which consists in the fact that information interaction is carried out by implementing the computational process of testing electronic devices in the computing module, and the control equipment displays and controls it. ("A testable control unit and its testing procedures" / V.B. BRODIN, A.V. KALININ - Scientific session MEPhI-2007. V.1 Automation. Microelectronics. Electronics. Electronic measuring systems. Computer medical systems, p. 94- 96).

The disadvantage of this method is the execution of tests in the computing module, which does not allow for a quick and flexible transition between different test sets, and accordingly increases the duration of the test process by its preparation, and not by the tests themselves.

The closest in technical essence to the claimed invention (prototype) is a method for constructing a computational process for testing equipment with exchange diagnostics using diagnostic tests (Patent RU 2750109 C1), which consists in the fact that the computational process is performed by control equipment, namely, it generates diagnostic tests, performs a computational test process and sends data packets to the electronic input / output device in transit through the transit device, which contains software that implements the exchange between the control equipment and the electronic input / output device, and the exchange of information from the control equipment with the input / output device is carried out according to certain algorithms, while the control equipment before packet transmission determines the execution time by adding the exchange time between the transit device and the electronic input / output device and the diagnostic time of the exchange and the formation of diagnostic information, and leads reading information from the transit device.

In this method, the control equipment calculates the exchange time between the transit device and the output/output device, and after its expiration, information is read from the transit device, which contains data from the electronic input/output device and diagnostic information. Violations of the exchange of the transit device and the electronic input / output device will lead to an unpredictable increase in the time of their interaction (including possible repetitions of the exchange, untimely response, etc.) and may cause premature reading of information by the control equipment from the transit device. It is also possible that the control equipment has an incorrect time count, which does not take into account the peculiarities of the exchange with one or another electronic input / output device, which can also lead to an early request for data by the control equipment from the transit device, and this data will not be fully received, or received in violation their integrity, i.e. data reception by the transit device from the electronic input / output device is not completed, and the control equipment requested them.

The limitations of this method can be eliminated by synchronizing the exchanges of the transit device with electronic input / output devices and control equipment with the transit device using an interrupt. This interruption is organized on a separate communication line between the control equipment and the transit device. Information interaction is carried out by generating an interrupt by the transit device upon completion of the exchange with the input/output device, which is transmitted to the control equipment and signals the presence of data received from the electronic input/output device and the possibility of reading them, including diagnostic information. The use of an interrupt ensures that the data is up-to-date and consistent.

The disadvantages of the prototype are:

An increase in the duration of testing due to potential incorrect timing on the control equipment, without taking into account the peculiarities of the exchange with a specific electronic I/O device, which can lead either to premature reading of information or to late reading when the data from the electronic I/O device is ready to read, and the control equipment continues to wait for the estimated time of reading;

Reducing the reliability of information interaction of the testing equipment due to the reading of incomplete or unreliable data by the control equipment from the transit device while increasing the real time of the exchange of the transit device and electronic input / output devices from the calculated one in the control equipment.

For the claimed invention, the following essential features common with the prototype have been identified: a method for ensuring information interaction of equipment when testing electronic input/output devices, which consists in the fact that when testing electronic input/output devices, diagnostic tests are formed; when executing tests, they implement the computational process of testing and form data packets into the electronic input/output device; using an electronic input / output device, signals are generated at the outputs; using the control equipment, the indication and control of the computing process and the computing process are carried out, forming diagnostic tests, performing the computing process of testing and sending data packets to the electronic input/output device through the transit device; using the transit device after the transmission of packets to the electronic input/output device or reading information from the electronic input/output device, exchange diagnostics are carried out and diagnostic information is generated; recording information from the control equipment to the electronic input / output device is implemented by forming a packet in the format of the instrument interface protocol with the sign of recording information, from which packets are formed in the format of the trunk interface protocol with the identifier of the instrument interface, which are transmitted to the transit device and upon receipt of the packets , using the transit device, identify the device interface and form a packet in the format of its protocol and transmit the received packet to the electronic input/output device; Reading information by the equipment of control of the electronic input/output device is implemented by forming a package control in format for the dashboard format with an information sign from which a package is format in the format of the main interface identifier with the dietary interface identifier, which is transmitted to the transit device and for obtaining a package and for obtaining a package, and for obtaining a package. Using a transit device, the instrument interface is identified and a package of its protocol is formed and it is transmitted to the electronic input/output device, reading the information.

The technical problems of the invention are:

Reducing the duration of testing;

Improving the reliability of information interaction of testing equipment.

The technical results of the invention are:

exclusion of non-functional delays in waiting for information by the control equipment from the transit device, which may be caused by incorrect estimated waiting time for information;

synchronous exchange of information, which excludes premature reading of data from the transit device in case of violation of the exchange of the transit device with the electronic input / output device and the need to re-exchange information with it.

Technical problems are solved, and technical results are achieved by the fact that the control equipment after transmitting packages to a transit device awaits the interruption signal from the transit device; In this case, through a transit device after the formation of diagnostic information, the exchange signal forms a signal for control equipment; Upon receipt of the interruption signal for reading information through control equipment, information is read from the electronic input/output device and diagnostic information, diagnostic information is read by means of information by means of control. At the same time, before waiting for an interruption in the control equipment, the maximum waiting time is set, and by exceeding the maximum time through the control equipment, they repeat the transfer of the parcel to the transit device; The number of repetitions is set on the control equipment before the start of testing.

The control equipment is connected to the transit device using the trunk interface protocol for data transfer, and a separate dedicated line for transmitting an interrupt signal. The transit device is connected to the electronic input/output device via the instrument interface. The control equipment contains software that provides support for the computational testing process. The transit device contains software that implements a single information-logical connection of control equipment and electronic input/output devices for their two-way exchange of information and diagnostics of the exchange between the transit device and electronic input/output devices. The transit device, based on the transmitted identifier, translates the received message to the electronic input/output device, performs exchange diagnostics, generates diagnostic information, and generates an interrupt to the control equipment.

If there is no interruption on the control equipment, a maximum waiting time is set, which eliminates the endless waiting (hanging). The expiration of the maximum time and the absence of an interruption indicates that no data has been received from the transit device and the control equipment repeats the issuance of data to the transit device up to several times. The number of repetitions is set on the control equipment before testing.

The drawing (Fig. 1) shows a functional diagram of the organization of a single information and logical connection of control equipment and electronic input / output devices, which provides full access to the computing process implemented on control equipment and a transit device to electronic input / output devices. The computational test process that performs diagnostic tests is implemented in a single software, on control equipment.

The initiator of the exchange between the control equipment and the transit device is the control equipment. The initiator of the exchange between the transit device and the electronic input/output device is the transit device.

During the execution of diagnostic tests on the control equipment, packets are generated in the instrument interface protocol format, intended directly for the electronic input/output device. For each of the packets in the device interface protocol format, a certain number of packets in the trunk interface protocol format are formed, each of which contains a protocol identifier and a device interface packet. The composed trunk interface packets are transmitted to the transit device. Based on the received identifier, the transit device converts the trunk interface packets into the corresponding device interface packet and transfers it to the I/O electronic device.

Each type of instrumental interface is encoded with its unique number (identifier) and recorded in the first information data word (IDW) of the trunk interface. For example, for 8-bit data words (SD) of the main interface, 256 types of instrument interface can be identified using the proposed algorithms, which is quite enough for modern testing tools, including those for the future expansion (inclusion of new and promising instrument interfaces in test tools for electronic input devices). /conclusion).

The second ISD contains the number of trunk interface packets F, made up of the instrument interface packet and is determined by the following formula:

ID - identifier (or number) of the instrument interface;

F = (round down (((k*P)+(h*2)) / (h*M[ID])) )+1

M is the maximum number of information data words (IDW) according to the trunk interface protocol;

P[ID] - the required number of ISDs according to the instrument interface protocol, with the identifier ID;

h - word width of information data words according to the trunk interface protocol;

k - bit width of information data words according to the instrument interface protocol.

The formula is used in Algorithms 1 and 2 of Fig. 2, where

i - ISD number according to the trunk interface protocol (from 1 to M);

j - number of the ISD category according to the trunk interface protocol (from 1 to h);

x - ISD number according to the instrument interface protocol (from 1 to P[ID]);

y is the number of the ISD category according to the instrument interface protocol (from 1 to k);

z - number of the message under the trunk interface protocol (from 1 to F).

The control equipment, after transmitting the packet(s) to the transit device, waits for an interrupt from the transit device to read the exchange information with the electronic input/output device.

Recording information from the control equipment to the transit device (Fig. 3) is implemented by generating a packet in the format of the instrument interface protocol with the sign of information recording, from which F packets are formed in the format of the trunk interface protocol with the identifier of the instrument interface according to algorithm 1 (Fig. 2). ) that are transmitted to the transit device. Upon receipt of F packets, the transit device identifies the device interface and generates a packet in the format of its protocol according to algorithm 2 (Fig. 2) and transmits the received packet to the electronic input / output device and performs exchange diagnostics with the formation of diagnostic information. After the formation of diagnostic information, the transit device generates an interrupt signal to the control equipment. The interrupt control hardware reads diagnostic information and displays it on the screen.

The control equipment reads information from the electronic input/output device (Fig. 3) by forming a packet in the format of the instrument interface protocol with the sign of reading information, from which 1 packet is formed in the format of the trunk interface protocol with the identifier of the instrument interface according to algorithm 1 (Fig. . 2), which is transmitted to the transit device. Upon receipt of the package, the transit device identifies the instrument interface and forms the package of its protocol according to the algorithm 2 (Fig. 2) and transmits it to the electronic input/output device, reading the information and diagnoses the exchange with the formation of diagnostic information. In the case of unsuccessful exchange, as part of the diagnosis of exchange, the transit device repeats the reading of information from electronic input/output devices several times or performs a diagnostic exchange in various modes. After the formation of diagnostic information, the transit device forms the interruption signal to the control equipment. Interruption control equipment is reading diagnostic information and reading data exchange data with an electronic input/output device and output on the screen.

Reducing the duration of testing is provided by the interaction of the transit device and the control equipment in real time through interruption, which allows you to completely avoid delays in the information interaction of the equipment.

Increasing the reliability of information interaction of testing equipment is provided by synchronizing the interaction, namely, the exclusion of premature reading of data from the transit device and thereby ensuring the integrity of the data transmitted to the control equipment and their relevance.

The method was tested at a workplace consisting of an NI PXI-1045 universal chassis with a PXI-8110 controller acting as control equipment, including a PXI-C1553M-EF-4 exchange module (multiplex exchange channel) via a trunk interface connected to a computing module acting as a transit device and providing information interaction of control equipment and electronic input / output devices, which are simulators of functional devices of the environment of control devices and interface modules for interface of control devices of the onboard control complex of the spacecraft (SC). To register an interrupt, the PXI-6509 exchange module installed in the chassis and connected to the transit device is used. Testing of simulators is carried out for their subsequent use at the stages of ground-based experimental testing of spacecraft control devices manufactured by ISS JSC.

Of the patent information materials known to the applicant, no features similar to the set of features of the proposed method were found.

Claims (2)

1. A way to ensure the information interaction of equipment when testing electronic input/output devices, which consists in the fact that when testing electronic input/output devices, diagnostic tests are formed; Performing tests, implement the computing process of testing and form data packages into an electronic input/output device; using an electronic input / output device, signals are generated at the outputs; Using the control equipment, the computing process and the computing process are indicated, forming diagnostic tests, performing the computing test process and sending data packages to the electronic input/output device through a transit device; Using a transit device after transmitting packages to the electronic input/output or reading of information from the electronic input/output device, the exchange is diagnosed and diagnostic information is formed; The record of information from the control equipment in the electronic input/output device is implemented by forming a package control in the format of the dashboard protocol with a sign of information record from which packages form in the format of the main interface identifier with the dash interface identifier, which are transmitted to the transit device, and to obtain a transit device. packets using a transit device to identify the device interface and form a packet in the format of its protocol and transmit the received packet to the electronic input/output device; information is read by control equipment from an electronic input/output device by forming a packet in the format of the instrument interface protocol with a sign of reading information, from which a packet is formed in the format of the trunk interface protocol with an identifier of the instrument interface, which is transmitted to the transit device, and upon receipt of the packet using the transit device, the device interface is identified and its protocol packet is formed and transferred to the electronic input / output device, reading information, characterized in that the control equipment, after transmitting packets to the transit device, waits for an interrupt signal from the transit device; at the same time, by means of the transit device, after the formation of the diagnostic information of the exchange, an interrupt signal is generated for the control equipment; upon receipt of an interrupt signal, information is read from the electronic input/output device and diagnostic information by the monitoring equipment, and diagnostic information is read by the monitoring equipment to write information. 2. The method according to claim 1, characterized in that before waiting for an interruption in the control equipment, the maximum waiting time is set, and when the maximum time is exceeded, the control equipment repeats the transmission of the message to the transit device; the number of repetitions is set on the control equipment before testing.

Images