CN208873137U - A kind of peripheral interface units failure manufacturing device for software test - Google Patents

Abstract

The utility model discloses a kind of peripheral interface units failure manufacturing devices for software test, connect tested board and peripheral interface units, including metal decking, the multiple single-pole three-throw switches being mounted on metal decking, PCB (printed circuit board) plate, two din connectors and the direct insertion conducting wire of Duo Gen, wherein, the pcb board connects each single-pole three-throw switch by direct insertion conducting wire；The pcb board connects tested board and peripheral interface units by two din connectors.The utility model can be easily combined with peripheral interface units, the hardware fault that simulation scene may occur.

Description

A kind of peripheral interface units failure manufacturing device for software test

Technical field

The utility model relates to rail traffic the field of test technology, the more particularly, to peripheral interface units of software test Failure manufacturing device.

Background technique

In the publication process of the signal system software of current rail traffic, it need to be verified by the way of Black-box Testing The correctness of software function.And for the functional test of peripheral interface units, conventional test method is by imitative at present Genuine computer drives each I/O (input/output) and its action state of back production to verify the correctness of software function.And During actual operation, equipment operating environment is often severe for relative experimental room, and hardware fault rate can also greatly improve, and exist Solid-state relay such as is adhered at the security risks in peripheral interface units, is easy to cause the generation of accident.Therefore, software also undertakes to hard Part failure is made a response, and ensures the function of operation security.Therefore, traditional test method has some limitations, and can not cover Test software is covered to the function of hardware failure detection and fault-safety principle.

Utility model content

The purpose of this utility model is to provide a kind of peripheral interface units failure manufacturing device for software test, energy Enough convenient and peripheral interface units are combined, the hardware fault that simulation scene may occur.

Realizing the technical solution of above-mentioned purpose is:

A kind of peripheral interface units failure manufacturing device for software test connects tested board and peripheral interface list Member, including metal decking, the multiple single-pole three-throw switches being mounted on metal decking, PCB (printed circuit board) plate, two DIN (Deutsches Institut f ü r Normung e.V) connector and the direct insertion conducting wire of Duo Gen, wherein

The pcb board connects each single-pole three-throw switch by direct insertion conducting wire；

The pcb board connects tested board and peripheral interface units by two din connectors.

Preferably, one side output signal A of tested board, one side output signal B of peripheral interface units；

The single-pole three-throw switch be divided into perform, middle-grade and lower gear, in which:

When performing, signal A and signal are with reference to ground connection；

When middle-grade, signal A and signal B connection；

When lower gear, signal A and electrical reference signal lateral are logical.

Preferably, when performing, signal A and signal B are disconnected the single-pole three-throw switch, and are placed in low level by force；

In lower gear, signal A and signal B are disconnected, and are placed in high level by force.

Preferably, the quantity of the single-pole three-throw switch is 18.

The beneficial effects of the utility model are: the utility model is expanded the I/O of peripheral interface units by PCB and connector It puts on display and, or the test point of peripheral interface units is drawn by wire jumper and is cooperated in single-pole three-throw switch module group control unit Signal is placed in high-order failure, low level failure or normal state by signal.By the switching of switch, can be made in white-box testing The hardware fault of peripheral interface units is made, so that reversely whether verifying software can make corresponding move to the hardware fault of equipment Make.The side of software efficiency is verified by the way of Software Simulation Test or customization failure board compared to conventional test methodologies Formula, the direct analog hardware failure of the utility model, has greatly reinforced the authenticity and validity of software test, can also pass through this Utility model reappears the hardware fault that scene occurs, the efficiency of software debugging and upgrading in laboratory.Meanwhile this is practical new Type carries out switch and signal connection using direct insertion conducting wire；Compared to the test card of PCB integrated form, it can accomplish that a card is more With.For different test scene and test board, flexible configuration can be carried out by way of plug conducting wire and jumper cap, fastly The pin signal definition of speed adaptation equipment under test.18 groups of measured signals can be at most controlled simultaneously also covers most of test need It asks, in extreme test request, whole signals can be controlled by increasing the method for switching group panel.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the failure manufacturing device of the utility model；

Fig. 2 is the left side view of failure manufacturing device shown in Fig. 1；

Fig. 3 is the pin distribution schematic diagram of single-pole three-throw switch in the utility model.

Specific embodiment

Below in conjunction with attached drawing, the utility model is described in further detail.

Fig. 1 and Fig. 2 are please referred to, the peripheral interface units failure manufacturing device for software test of the utility model connects Connect tested board and peripheral interface units, including metal decking 1, the multiple single-pole three-throw switches 2 being mounted on metal decking 1, 3, two din connectors 4 of pcb board and the direct insertion conducting wire 5 of Duo Gen.

Pcb board 3 connects each single-pole three-throw switch 2 by direct insertion conducting wire 5.Pcb board 3 is connected by two din connectors 4 Tested board and peripheral interface units.Original straight cutting can be installed on failure manufacture dress in the tested board of peripheral interface units It sets.Failure manufacturing device is inserted into peripheral interface units board together with board together.

One side output signal A of tested board, one side output signal B of peripheral interface units.

Single-pole three-throw switch 2 divides to perform, middle-grade and lower gear, in which: when performing, signal A and signal are with reference to ground connection；In When shelves, signal A and signal B connection；When lower gear, signal A and electrical reference signal lateral are logical.

Single-pole three-throw switch 2 is as shown in figure 3, contain 1-6 pin.It (performs) when switch dials up, 2 pins and 3 pipes Foot connection, 5 pins and 6 pin connection；When switch is when intermediate (middle-grade), 2 pins and 3 pin connection, 5 pins and 4 pins join It is logical；When switch is stirred downwards (lower gear), 2 pins and 1 pin connection, 5 pins and 4 pin connection.

Connecting 2 pins and 4 pins, logical relation by wire jumper becomes: when switch dials up, 4-2-3 pin is mutual It is connected, 5 pins and 6 pin connection；When switch is when intermediate, 3-2-4-5 pin communicates with one another；When switch is stirred downwards, 1-2-4-5 pin communicates with one another.1 pin is connected to electrical reference signal and puts down, and 6 pins are connected to signal with reference to ground, and 5 pins are connected to Signal A, 3 pins are connected to signal B.

Therefore, by the connection of above-mentioned switch, following relationship may be implemented: when switch dials up, signal A and signal With reference to ground connection, it is meant that signal A is set to low level；When switch is when intermediate, signal A and B communicates with one another；When switch is downward When stirring, signal A and electrical reference signal lateral are logical, it is meant that signal A is set to high level.

Therefore, when switch is in middle position, tested board side can directly receive peripheral interface units side hair Signal out, board are in normal operating conditions, and by binding post, we can measure the level of the signal, so that judgement should Whether signal is set to height according to the requirement of software or sets low.When switch dials up, the signal of tested board side and periphery The signal of interface unit side disconnects and is placed in low level by force, to simulate a kind of hardware device failure.When switch to Under when stirring, the signal of tested board side and the signal of peripheral interface units side disconnect and are placed in high level by force, from And simulate the hardware device failure of another state.According to the requirement of railway signals equipment, software need to be to single-point hardware device Failure makes a response and is oriented to secure side, so can intuitively simulate single-point hardware device failure by toggle switch, observes Software is the system requirements for meeting fault-safety principle, increases the validity of software test.

For different testing requirements, the signal without test need to be attached using jumper cap.In the present embodiment, hilted broadsword three The quantity of throw switch is 18, could support up while testing 18 groups of signals.

Above embodiments are only for illustration of the utility model, rather than limitations of the present invention, related technical field Technical staff can also make various transformation or modification in the case where not departing from the spirit and scope of the utility model, because This all equivalent technical solution also should belong to the scope of the utility model, should be limited by each claim.

Claims (4)

1. a kind of peripheral interface units failure manufacturing device for software test connects tested board and peripheral interface units, It is characterised in that it includes metal decking, the multiple single-pole three-throw switches being mounted on metal decking, pcb board, two DIN connections Device and the direct insertion conducting wire of Duo Gen, wherein

The pcb board connects each single-pole three-throw switch by direct insertion conducting wire；

The pcb board connects tested board and peripheral interface units by two din connectors.

2. the peripheral interface units failure manufacturing device according to claim 1 for software test, which is characterized in that quilt One side output signal A of drafting board card, one side output signal B of peripheral interface units；

The single-pole three-throw switch be divided into perform, middle-grade and lower gear, in which:

When performing, signal A and signal are with reference to ground connection；

When middle-grade, signal A and signal B connection；

When lower gear, signal A and electrical reference signal lateral are logical.

3. the peripheral interface units failure manufacturing device according to claim 2 for software test, which is characterized in that institute Single-pole three-throw switch is stated when performing, signal A and signal B are disconnected, and are placed in low level by force；

In lower gear, signal A and signal B are disconnected, and are placed in high level by force.

4. the peripheral interface units failure manufacturing device according to claim 2 for software test, which is characterized in that institute The quantity for stating single-pole three-throw switch is 18.