General testing device based on CPCI bus

Abstract

The invention relates to a general test device based on a CPCI (compact peripheral component interconnect) bus, which comprises a structural support, a power conversion unit, an interface test unit and an interface expansion unit, and is characterized in that the interface test unit and the interface expansion unit are mounted on the structural support, and the power conversion unit is mounted at the bottom of the structural support; the structural support is used for voltage conversion and inputting the converted voltage to the interface test unit, the structural support is used for facilitating movement and use, the interface test unit is connected with a mainboard and a board card needing to be tested, and the interface expansion unit is used for interface expansion. According to the 3U CPCI board card function testing system and method, function testing can be carried out on any standard 3U CPCI board card, great convenience is brought to testing personnel, and the testing universality and the testing efficiency are greatly improved.

Description

Technical Field

[0001] The invention belongs to the field, in particular to a universal testing device based on CPCI bus. Background Art

[0002] The standard 3U CPCI board adopts CPCI (Compact PCI) bus, i.e., compact PCI bus, which is a high-performance industrial computer bus standard based on PCI specification and superior to PCI specification. CPCI's high density, high openness, high reliability, and hot-swappable characteristics enable CPCI computers to build high-availability systems, which are suitable for fields that require high reliability and high-speed computing, such as communication, network, real-time system control, and real-time data acquisition, and have a wide range of applications. However, the functional test of the standard 3U CPCI board generally needs to be carried out on a dedicated test device, and different boards need to make different test devices. It is impossible to test any 3U CPCI board on the same test device, which not only increases the test cost, but also brings great inconvenience to the testers, resulting in low test efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a universal test device based on the CPCI bus, which can effectively solve the problem that the dedicated test device in the background technology cannot perform functional tests on any 3U CPCI board.

[0004] The present invention solves the technical problem by adopting the following technical solutions:

[0005] A universal test device based on CPCI bus comprises a structural support, a power conversion unit, an interface test unit and an interface extension unit, wherein the interface test unit and the interface extension unit are mounted on the structural support, the power conversion unit is mounted at the bottom of the structural support and is used for voltage conversion and inputting the converted voltage into the interface test unit, the structural support is used for convenient mobile use, the interface test unit is connected to a mainboard and a board to be tested, and the interface extension unit is used for interface expansion.

[0006] Moreover, the structural support is made of aluminum alloy and is oxidized.

[0007] Moreover, the interface testing unit comprises a power interface, a mainboard network port, a PS2 interface, a USB interface, a VGA interface, a DVI interface, a mainboard module and a CPCI slot, wherein the mainboard module is installed in the first CPCI slot, wherein the output end of the power conversion unit is connected to the power interface, the power interface is connected to the CPCI slot via a CPCI bus, and the first CPCI slot is respectively connected to the mainboard network port, the PS2 interface, the USB interface, the VGA interface, the DVI interface and the mainboard serial port.

[0008] Moreover, the power conversion unit is used to filter and AC / DC convert the AC power into +3.3V, +5V, ±12V, +24V DC voltages and provide them to the interface test unit.

[0009] Moreover, both ends of the interface expansion unit are CPCI plugs, and each point of the plugs at both ends is connected one-to-one through PCB routing, which is used for CPCI interface expansion. One end of the interface expansion unit is connected to one side of the CPCI slot socket of the interface test unit, and the other end uses a short-circuit wire to short-circuit the corresponding points or connect to other devices according to the needs of the board test.

[0010] The advantages and positive effects of the present invention are:

[0011] The present invention comprises a structural support, a power conversion unit, an interface test unit and an interface expansion unit, wherein the interface test unit and the interface expansion unit are mounted on the structural support, the power conversion unit is mounted at the bottom of the structural support, and is used for voltage conversion and inputting the converted voltage into the interface test unit, the structural support is used for convenient mobile use, the interface test unit is connected to a mainboard and a board to be tested, and the interface expansion unit is used for interface expansion. The present invention can realize functional testing of any standard 3U CPCI board, which not only brings great convenience to testers, but also greatly improves test versatility and test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present invention;

[0013] (a) is the front view; (b) is the rear view;

[0014] Figure 2 This is a schematic diagram of an interface test unit of the present invention;

[0015] Figure 3 This is a schematic diagram of an interface expansion unit of the present invention;

[0016] (a) is a schematic diagram of the front side of the interface expansion unit, and (b) is a schematic diagram of the back side of the interface expansion unit;

[0017] Figure 4 This is a connection diagram of the test device of the present invention;

[0018] Figure 5 This is a circuit diagram of the present invention.

[0019] Description of labels:

[0020] 1-Structural bracket 2-Power conversion unit, 3-Interface test unit, 4-Interface expansion unit, 5-20-core plug, 6-20-core socket, 7-Motherboard slot, 8-Other five slots, 9-Power control switch, 10-Reset switch, 11-Status indicator light, 12-PS2 interface, 13-VGA interface, 14-DVI interface, 15-USB interface, 16-Network interface, 17-Serial interface. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings.

[0022] A general test device based on CPCI bus, such as Figure 1 As shown, it includes a structural support 1, a power conversion unit 2, an interface test unit 3 and an interface expansion unit 4, wherein the interface test unit and the interface expansion unit are installed on the structural support, the power conversion unit is installed at the bottom of the structural support, and is used for voltage conversion and inputting the converted voltage to the interface test unit, the structural support is used for convenient mobile use, the interface test unit is connected to the mainboard and the board to be tested, and the interface expansion unit is used for interface expansion.

[0023] like Figure 4 As shown, the structural support is made of aluminum alloy, which is sprayed with black paint after oxidation treatment, and the whole structure is firm and reliable.

[0024] like Figure 2 and Figure 4As shown, the interface test unit is designed with 6 CPCI slots for connecting the mainboard and the boards that need to be tested. Each CPCI slot consists of P1 and P2 sockets. P1 is a 125-pin standard bus defined CPCI 2mm socket with locating pins, and P2 is a 110-pin CPCI 2mm socket without locating pins. The points are defined by each board. P2 uses a CPCI long-pin socket, both sides of which can be connected to the CPCI plug at the same time. The first slot of the interface test unit is the mainboard slot 7, which can only be used to install the mainboard module. The remaining five slots 8 are used to install the CPCI boards that need to be tested, and one or more slots can be used at the same time. The interface test unit is designed with a power control switch 9, a reset switch 10, and a status indicator light 11, which can control the power on and off, reset the mainboard, and indicate the device status. The peripheral design includes a PS2 interface 12, a VGA interface 13, a DVI interface 14, and a USB interface 15, which are used to connect human-computer interaction devices such as PS2 keyboard and mouse, VGA / DVI display, and USB devices. It is also designed with a network interface 16, a serial interface 17, and other communication interfaces, which can perform communication tests with the board under test. Among them, the output end of the power conversion unit is connected to the power interface, and the power interface is connected to the CPCI slot through the CPCI bus. The first CPCI slot is respectively connected to the mainboard network port, PS2 interface, USB interface, VGA interface, DVI interface, and mainboard serial port.

[0025] The power conversion unit is used for voltage conversion. After filtering and AC / DC conversion, the external AC voltage is converted into DC voltages such as +3.3V, +5V, ±12V, +24V and provided to the interface test unit. The power conversion unit and the interface test unit are connected through a 20-core plug 5 and a 20-core socket 6. The plug and socket are equipped with a locking device, which is firm and reliable.

[0026] like Figure 3 As shown, both ends of the interface expansion unit are CPCI plugs, and each point of the plugs at both ends is connected one-to-one through PCB routing, which is used for CPCI interface expansion. One end of the interface expansion unit is connected to one side of the CPCI slot socket of the interface test unit, and the other end is short-circuited with a short-circuit wire according to the needs of the board test or connected to other devices.

[0027] The working process of the present invention is:

[0028] Installation and connection: Insert the mainboard into the first slot of the interface test unit, insert the board to be tested into any position of the other five slots, connect one end of the interface expansion unit to the other side of the P2 socket of the board slot to be tested on the interface test unit, and short-circuit the corresponding points of the other end of the interface expansion unit or connect it to other devices as needed.

[0029] Bus test: Turn on the power control switch of the interface test unit, the power indicator light comes on, the mainboard is powered on and the hard disk indicator light flashes. After entering the system normally, if the board can be found in the device manager (the driver of the board to be tested needs to be installed according to the prompts for the first connection), it can be determined that the CPCI bus of the board is normal. If the board cannot be found in the device manager, it means that there is a problem with the CPCI bus of the board. It is necessary to check the circuits related to the bus on the board to eliminate the fault.

[0030] Test the board as required.

[0031] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A universal test device based on CPCI bus, characterized in that: It includes a structural support, a power conversion unit, an interface test unit and an interface expansion unit, wherein the interface test unit and the interface expansion unit are installed on the structural support, the power conversion unit is installed at the bottom of the structural support, and is used for voltage conversion and inputting the converted voltage to the interface test unit, the structural support is used for convenient mobile use, the interface test unit is connected to the mainboard and the board to be tested, and the interface expansion unit is used for interface expansion.

2. A CPCI bus-based universal test device according to claim 1, characterized in that: The structural support is made of aluminum alloy and is oxidized.

3. A CPCI bus-based universal test device according to claim 1, characterized in that: The interface testing unit comprises a power interface, a mainboard network port, a PS2 interface, a USB interface, a VGA interface, a DVI interface, a mainboard module and a CPCI slot, wherein the mainboard module is installed in the first CPCI slot, wherein the output end of the power conversion unit is connected to the power interface, the power interface is connected to the CPCI slot via a CPCI bus, and the first CPCI slot is respectively connected to the mainboard network port, the PS2 interface, the USB interface, the VGA interface, the DVI interface and the mainboard serial port.

4. A CPCI bus-based universal test device according to claim 1, characterized in that: The power conversion unit is used to filter and AC / DC convert the AC power into +3.3V, +5V, ±12V, +24V DC voltages and provide them to the interface test unit.

5. A CPCI bus-based universal test device according to claim 1, characterized in that: Both ends of the interface expansion unit are CPCI plugs, and each point of the plugs at both ends is connected one-to-one through PCB routing, which is used for CPCI interface expansion. One end of the interface expansion unit is connected to one side of the CPCI slot socket of the interface test unit, and the other end uses a short-circuit wire to short-circuit the corresponding points or connect to other devices according to the needs of the board test.

Images