CN108089952B

CN108089952B - Automatic change test equipment

Info

Publication number: CN108089952B
Application number: CN201611036367.4A
Authority: CN
Inventors: 杨松; 刘博�; 王虹; 王霄
Original assignee: Beijing Institute of Computer Technology and Applications
Current assignee: Beijing Institute of Computer Technology and Applications
Priority date: 2016-11-22
Filing date: 2016-11-22
Publication date: 2021-11-16
Anticipated expiration: 2036-11-22
Also published as: CN108089952A

Abstract

The invention discloses an automatic test device, which comprises: the industrial personal computer is used for sending a network message for controlling the action of the tested equipment to the tested equipment and receiving feedback data of the tested equipment; the industrial personal computer sends data to a 1553b interface of the tested device through a 1553b interface, and the data is used for testing the 1553b interface of the tested device 8; the industrial personal computer sends data to the rs422 interface of the tested equipment through the rs422 interface, and the data are used for testing the rs422 interface of the tested equipment; the industrial personal computer tests the parallel input and output interface of the tested equipment through the PCI-1762 switching value input and output board; one path of serial interface of the industrial personal computer is connected with a plurality of paths of serial interfaces corresponding to the tested equipment through an IO test box, and the IO test box gates the serial interfaces of the tested equipment according to the instruction of the industrial personal computer; the GPS test box converts the GPS signal of the GPS antenna into a differential signal and inputs the differential signal to a pulse per second interface of the tested equipment.

Description

Automatic change test equipment

Technical Field

The invention relates to the technical field of testing, in particular to automatic testing equipment.

Background

The method has the advantages of wide application, high yield, multiple functions and complex and fussy testing process for some special computer products. By adopting a manual testing mode, the time of several hours is needed for one-time testing of one computer, a large amount of labor cost is consumed, and the progress of a product is always delayed; and manual test people are high in participation degree, the problems of errors or missing test items are difficult to avoid, and the product quality is difficult to ensure. In view of the above problems, a special test device with high automation test degree is needed to achieve the purpose of improving test efficiency and ensuring product quality.

Disclosure of Invention

The present invention is directed to a host monitoring system based on a plug-in architecture, which is used to solve the above problems in the prior art.

The invention relates to an automatic test device, which comprises: the system comprises an industrial personal computer, a 1553B communication board, an RS422 communication board, a PCI-1762 switching value input and output board, a PCI-1756 switching value input and output board, an IO test box, a GPS test box and a GPS antenna; the industrial personal computer is used for sending a network message for controlling the action of the tested equipment to the tested equipment and receiving feedback data of the tested equipment; the industrial personal computer sends data to a 1553b interface of the tested device through a 1553b interface, and the data is used for testing the 1553b interface of the tested device 8; the industrial personal computer sends data to the rs422 interface of the tested equipment through the rs422 interface, and the data are used for testing the rs422 interface of the tested equipment; the industrial personal computer tests the parallel input and output interface of the tested equipment through the PCI-1762 switching value input and output board; one path of serial interface of the industrial personal computer is connected with a plurality of paths of serial interfaces corresponding to the tested equipment through an IO test box, and the IO test box gates the serial interfaces of the tested equipment according to the instruction of the industrial personal computer; the GPS test box converts the GPS signal of the GPS antenna into a differential signal and inputs the differential signal to a pulse per second interface of the tested equipment.

An embodiment of the automated test equipment according to the present invention further comprises: the switch is connected between the industrial personal computer and the tested equipment and used for Ethernet communication between the tested equipment and the industrial personal computer.

An embodiment of the automated test equipment according to the present invention further comprises: and the coupler is connected between a 1553b interface of the industrial personal computer and a 1553b interface of the tested equipment.

The automatic test equipment can provide special tests according to the requirements of special equipment, has higher automatic test degree, and can achieve the purposes of improving test efficiency and ensuring product quality.

Drawings

FIG. 1 is a block diagram of an automated test equipment of the present invention.

Detailed Description

In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

Fig. 1 is a block diagram of an automatic test equipment according to the present invention, and as shown in fig. 1, the automatic test equipment according to the present invention includes: the system comprises an industrial personal computer 1, a 1553B communication board 2, an RS422 communication board 3, a PCI-1762 switching value input and output board 4, a PCI-1756 switching value input and output board 5, an IO test box 6, a GPS test box 11, a GPS antenna 7, tested equipment 8, a switch 9 and a coupler 10.

As shown in fig. 1, an industrial personal computer 1 is bidirectionally connected with a tested device 8 through a switch 9, a 1553B communication board 2 is bidirectionally connected with a coupler 10, an RS422 communication board 3 is bidirectionally connected with the tested device 8, a PCI-1762 switching value input/output board 4 is connected with an IO/GPS test box 6 and is bidirectionally connected with the tested device 8, a PCI-1756 switching value input/output board 5 is bidirectionally connected with the tested device, and an IO 6 is bidirectionally connected with the tested device 8 and is connected with the IO/GPS test box 6. The GPS antenna 7 is connected with the GPS test box 11. The GPS test box 11 is connected to the device under test 8.

As shown in fig. 1, the industrial personal computer 1 is configured to send a network message for controlling the device under test 8 to act, such as a test command of restarting and self-checking, to the device under test 8 through the ethernet switch 9; the industrial personal computer 1 sends data to a 1553b interface of the tested device 8 through a 1553b interface for testing the 1553b interface of the tested device 8, and the coupler 10 is used as an interface of the two interfaces. The industrial personal computer 1 sends data to the rs422 interface of the tested device 8 through the rs422 interface, and the data is used for testing the rs422 interface of the tested device 8. The PCI1762 interface tests the parallel input output interface of the device under test. One path of serial interface of the industrial personal computer 1 is connected with the multi-path serial interface corresponding to the tested equipment 8 through the IO test box 6, and the industrial personal computer 1 controls the conduction of the serial interface of the tested equipment 8 through the channel selection signal. The GPS test box 11 converts the GPS signal of the GPS antenna 7 into a differential signal, and inputs the differential signal to a pulse per second interface of the tested equipment.

As shown in fig. 1, the industrial personal computer 1 first sets the IP address of the device under test 8, sends a command to the device under test 8 through the 9000 port of the UDP protocol, inquires whether the device under test 8 is ready, and replies that it is ready if the device under test 8 completes booting. The method comprises the steps of carrying out dual-redundancy network switching time test on tested equipment 8, sending data to the tested equipment 8 by an industrial personal computer 1 through a switch 9, periodically sending a work network card switching instruction to the tested equipment 8 in the period, receiving a data packet returned by the tested equipment 8, assuming that an SP packet is sent, the total time is T, receiving an RP packet, and the switching times are n, and calculating the switching time of the dual-redundancy network to be T/SP (SP-RP)/n.

As shown in fig. 1, in the serial IO test, a device under test 8 has 11 paths of serial IO communication capabilities, each path has 16 switching value input/output points, if a plurality of test points are involved in the simultaneous test, and the test process needs to convert the serial IO into parallel for testing, the 11 paths of simultaneous conversion also need a complex conversion circuit. Therefore, the present embodiment adopts a channel switching manner. The IO test box 6 and the tested device 8 are connected with 11 paths of serial IO channels through a coaxial cable, a PCI-1756 switching value input/output board 5 of the industrial personal computer 1 sends 6 channel gating signals to the IO test box, and simultaneously sends channel selection signals to the tested device 8 through the Ethernet, so that the two parties work in the same channel to carry out IO input/output test. After the digital quantity signal output by the IO interface of the PCI-1756 switching value input/output board 5 is optically coupled and isolated by the TLP181, the gating circuit is driven to be turned on, and normal transmission of the differential signal is realized. 11 digital signals, each time gating a corresponding set of control and detection signals.

As shown in fig. 1, in the parallel IO test, the PCI-1756 switching value input/output board 5 provides 32 digital value input channels with isolation and 32 digital value output channels with isolation. Besides providing the selection signal, the test condition of 16 paths of parallel IO can be provided. The board card is directly connected with a tested device 8, the industrial personal computer 1 dispatches the PCI-1756 board card 5 to control output or check input, and the PCI-1756 board card communicates with the tested computer through a local area network to form a closed loop for testing.

As shown in FIG. 1, in the RS422 test, the industrial personal computer is directly connected with the tested equipment through a cable, a bidirectional channel of an RS422 protocol is established, and the sending and receiving functions of the RS422 under a synchronous working mode and an asynchronous working mode are tested. The industrial personal computer controls the RS422 board card on the PCI bus thereof, sends random data with specific length to the tested equipment, and judges the correctness according to the data returned by the tested equipment.

As shown in fig. 1, in a 1553B test, the 1553B board card of the tested device 8 is respectively tested to work in three modes of BC, BM and RT for data receiving and sending, the industrial personal computer 1 sends an instruction to the tested device 8 through the ethernet to enable the tested device to work in various modes, the industrial personal computer 1 specifies sent data and verifies the correctness when testing the sending function, the tested device 8 returns the data sent by the industrial personal computer 1 through the 1553B device to the industrial personal computer 1 through the ethernet when testing the received data, and the industrial personal computer 1 verifies the correctness of the data.

As shown in figure 1, in the self-defense time test, a GPS test box 1 receives GPS second pulse and converts the second pulse into a signal which can be identified by a tested device and then inputs the signal into the tested device 8, the tested device 8 returns the second remaining time to an industrial personal computer 1 through an Ethernet after receiving the interruption of the second pulse, and the industrial personal computer 1 compares the deviation of the second remaining time and judges whether the self-defense time performance of the tested device meets the requirement.

The special automatic test equipment comprises a test box, an industrial personal computer and a plurality of cables, wherein a self-designed circuit board is arranged in the test box and is mainly responsible for selection and switching of IO channels, power supply of IO conditioning boards and integration of a GPS module. The industrial personal computer is integrated with an RS422 board card, a switching value input and output board card and a 1553B board card by utilizing a PCI bus, and meanwhile, self-developed software is installed on the industrial personal computer and is communicated with a tested computer by utilizing the board cards, so that various indexes are tested. The special automatic test equipment can realize the functions of dual redundant network test, serial IO test, parallel IO test, RS422 communication function test, 1553B communication test and self-defense time test.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An automated test apparatus, comprising: the system comprises an industrial personal computer, a 1553B communication board, an RS422 communication board, a PCI-1762 switching value input and output board, a PCI-1756 switching value input and output board, an IO test box, a GPS test box and a GPS antenna;

the industrial personal computer is used for sending a network message for controlling the action of the tested equipment to the tested equipment and receiving feedback data of the tested equipment; the industrial personal computer sends data to a 1553b interface of the tested device through a 1553b interface, and the data is used for testing the 1553b interface of the tested device 8; the industrial personal computer sends data to the rs422 interface of the tested equipment through the rs422 interface, and the data are used for testing the rs422 interface of the tested equipment; the industrial personal computer tests the parallel input and output interface of the tested equipment through the PCI-1762 switching value input and output board; one path of serial interface of the industrial personal computer is connected with a plurality of paths of serial interfaces corresponding to the tested equipment through an IO test box, and the IO test box gates the serial interfaces of the tested equipment according to the instruction of the industrial personal computer; the GPS test box converts the GPS signal of the GPS antenna into a differential signal and inputs the differential signal to a pulse per second interface of the tested equipment;

the method comprises the steps that an industrial personal computer firstly sets an IP address of tested equipment, sends a command to the tested equipment through a 9000 port of a UDP protocol, inquires whether the tested equipment is ready, if the tested equipment is started and completed, a reply is ready, a dual-redundancy network switching time test is carried out on the tested equipment, the industrial personal computer sends data to the tested equipment through a switch, periodically sends a work network card switching instruction to the tested equipment in the period, receives a data packet returned by the tested equipment, supposes that an SP packet is sent, the total time is T, an RP packet is received, the switching times are n, and the switching time of the dual-redundancy network is T/SP (SP-RP)/n.

2. The automated test equipment of claim 1, further comprising: the switch is connected between the industrial personal computer and the tested equipment and used for Ethernet communication between the tested equipment and the industrial personal computer.

3. The automated test equipment of claim 1, further comprising: and the coupler is connected between a 1553b interface of the industrial personal computer and a 1553b interface of the tested equipment.