CN219872374U - GPIB-to-Ethernet communication card - Google Patents

Abstract

The utility model provides a GPIB-to-Ethernet communication card, which is connected with automation equipment to be tested through a GPIB protocol interface, is connected with test equipment through an Ethernet protocol interface, and can convert GPIB protocol signals sent by the automation equipment into Ethernet protocol signals through a processor and sends the Ethernet protocol signals to the test equipment; for the Ethernet protocol signal sent by the test equipment, the Ethernet protocol signal can be converted into a GPIB protocol signal by a processor and then sent to the automation equipment; therefore, the problem that the equipment cannot communicate online due to inconsistent interface protocols can be solved, normal communication connection between the automatic equipment and the testing equipment is realized, and normal running of the equipment testing process is ensured.

Description

GPIB-to-Ethernet communication card

Technical Field

The utility model relates to the technical field of equipment testing, in particular to a GPIB-to-Ethernet communication card.

Background

In the production of semiconductor chips (Integrated Circuit Chip, IC chips), test equipment is required to be completed in conjunction with automation equipment. The test equipment and the automation equipment need to carry out online communication to realize mass production test, and the traditional communication connection is connected by using a General-purpose interface bus (Purpose Interface Bus, GPIB) protocol.

However, the new model of test equipment mostly uses the ethernet interface protocol, and does not support the GPIB interface protocol.

Therefore, how to ensure the normal communication connection between the test equipment and the automation equipment becomes a problem to be solved.

The above information disclosed in the background section is only for enhancement of understanding of the background of the utility model and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model provides a GPIB-to-Ethernet communication card, which is used for solving the problems existing in the prior art.

Specifically, the present utility model provides a GPIB-to-ethernet communication card, comprising:

the processor is used for realizing conversion between the general interface bus GPIB protocol signal and the Ethernet protocol signal;

a signal driver coupled to the processor;

the GPIB protocol interface is used for connecting the signal driver and the automation equipment to be tested;

an ethernet controller coupled to the processor;

and the Ethernet protocol interface is used for connecting the Ethernet controller and the testing equipment, and the testing equipment is used for testing the automation equipment.

In some embodiments, further comprising: and the functional parameter setting circuit is connected with the processor.

In some embodiments, further comprising: and the state indicating circuit is connected with the processor.

In some embodiments, further comprising: and a system power supply connected with the processor.

In some embodiments, the ethernet controller is coupled to the processor via a serial peripheral interface, SPI, bus.

In some embodiments, at least one of the following is included:

the model of the processor comprises XC7A75;

the model of the signal driver comprises 74LVC1T45;

the model of the Ethernet controller comprises W5500.

The GPIB-to-Ethernet communication card provided by the utility model comprises: the processor is used for realizing conversion between the general interface bus GPIB protocol signal and the Ethernet protocol signal; a signal driver coupled to the processor; the general interface bus GPIB protocol interface is used for connecting the signal driver and the automation equipment to be tested; an ethernet controller coupled to the processor; and the Ethernet protocol interface is used for connecting the Ethernet controller and the testing equipment, and the testing equipment is used for testing the automation equipment. The GPIB-to-Ethernet communication card provided by the utility model is connected with the automation equipment to be tested through the GPIB protocol interface, is connected with the testing equipment through the Ethernet protocol interface, and can convert the GPIB protocol signal sent by the automation equipment into the Ethernet protocol signal through the processor and sends the Ethernet protocol signal to the testing equipment; for the Ethernet protocol signal sent by the test equipment, the Ethernet protocol signal can be converted into a GPIB protocol signal by a processor and then sent to the automation equipment; therefore, the problem that the equipment cannot communicate online due to inconsistent interface protocols can be solved, normal communication connection between the automatic equipment and the testing equipment is realized, and normal running of the equipment testing process is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic diagram of an application scenario of the present utility model;

fig. 2 is a schematic diagram of a GPIB-to-ethernet communication card according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a signal driver according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a GPIB protocol interface according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an ethernet controller according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of an ethernet protocol interface according to an embodiment of the present utility model;

fig. 7 is another schematic diagram of a GPIB-to-ethernet communication card according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a functional parameter setting circuit according to an embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a status indication circuit according to an embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a system power supply according to an embodiment of the present utility model.

Reference numerals illustrate:

10. a processor; 20. a signal driver; 30. GPIB protocol interfaces; 40. an Ethernet controller; 50. an ethernet protocol interface; 60. a functional parameter setting circuit; 70. a status indication circuit; 80. and a system power supply.

Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this embodiment of the utility model, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims, unless otherwise indicated, and that any structural modifications, proportional changes, or dimensional adjustments, which would otherwise be apparent to those skilled in the art, would be made without departing from the spirit and scope of the utility model.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

The following describes the technical scheme of the present utility model and how the technical scheme of the present utility model solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present utility model will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an application scenario of the present utility model, and fig. 2 is a schematic diagram of a GPIB-to-ethernet communication card provided by an embodiment of the present utility model, as shown in fig. 1 and fig. 2, the present utility model provides a GPIB-to-ethernet communication card, including:

a processor 10 for implementing conversion between the GPIB protocol signal and the ethernet protocol signal;

a signal driver 20 connected to the processor 10;

a GPIB protocol interface 30 for connecting the signal driver 20 and an automation device to be tested;

an ethernet controller 40 connected to the processor 10;

an ethernet protocol interface 50 for connecting the ethernet controller 40 and a test device for testing the automation device.

Alternatively, the processor 10 may specifically employ a field programmable gate array (Field Programmable Gate Array, FPGA) chip, such as XC7a75.XC7a75 is a new generation FPGA family, ARTIX7, from XILINX corporation. ARTIX7 adopts an advanced 28nm design process, and adopts a miniaturized packaging and unified VIRTEX series architecture, so that the power consumption and the cost are reduced to a certain extent. The FPGA has the characteristics of high speed, rich IO resources, flexible programming, low power consumption and the like, and is widely applied to each stage of an integrated circuit.

In the utility model, XC7A75 mainly realizes the seamless switching function between GPIB protocol and Ethernet protocol, and controls all functional modules in the system of GPIB-to-Ethernet communication card. The XC7a75 may specifically adopt an FBGA484 packaging form, where the system uses an external clock, a configuration circuit, a download circuit, and the like, and the number of IO resources under the packaging is up to 285, so that the number of IO resources in the system can be completely satisfied.

Optionally, the signal driver 20 may specifically use 74LVC1T45 to implement the GPIB protocol interface 30 signal driving function. The GPIB protocol interface 30 signals have transmission directionality, and the signal direction needs to be switched at any time. While the GPIB protocol interface 30 uses different level standards across it. The 74LVC1T45 is independently powered by using a dual power supply to realize level conversion. The 74LVC1T45 is a single-path bidirectional controllable level conversion chip, and has a wider voltage range and stronger driving capability. For example, fig. 3 is a schematic diagram of a signal driver 20 according to an embodiment of the present utility model.

Alternatively, the GPIB protocol interface 30 may use a standard 24Pin GPIB interface, and use a standard GPIB bus signal. For example, fig. 4 is a schematic structural diagram of a GPIB protocol interface 30 according to an embodiment of the present utility model.

Optionally, the ethernet controller 40 may specifically use W5500 to implement a communication connection of the ethernet protocol (TCP/IP). W5500 is an embedded Ethernet controller 40 integrating all hardware TCP/IP protocol stacks, and is also an industrial Ethernet control chip. W5500 supports high-speed standard 4-wire SPI interface to communicate with host computer, supports auto-negotiation, power-down mode and wake-on-network function. Unlike the traditional software protocol stack, the W5500 is embedded with 8 independent hardware sockets to carry out 8 paths of independent communication. For example, fig. 5 is a schematic structural diagram of an ethernet controller 40 according to an embodiment of the present utility model.

In the scheme, the connection of an Ethernet protocol is realized by using W5500; and the FPGA and the W5500 are communicated by using SPI bus connection.

Alternatively, the ethernet protocol interface 50 may use an RJ45 connector, where HR911105a is an RJ45 connector with an isolation transformer and a status LED, and has stable signal transmission and strong interference resistance. For example, fig. 6 is a schematic structural diagram of an ethernet protocol interface 50 according to an embodiment of the present utility model.

The working flow of the GPIB-to-Ethernet communication card comprises the following steps:

1. the automation device sends a "start" signal to the processor 10;

2. the processor 10 receives a "start" signal (GPIB protocol) sent by the automation device;

3. the processor 10 converts the signals into ethernet protocol (TCP/IP) commands for transmission to the test equipment;

4. after receiving the converted start command, the test equipment performs a semiconductor IC test process;

5. after the IC testing process is completed, the testing equipment sends out a test result command through an Ethernet protocol (TCP/IP);

6. the processor 10 receives a "test result" signal (ethernet protocol) sent by the test device;

7. the processor 10 converts the "test result" command of the ethernet protocol (TCP/IP) into a GPIB protocol signal and transmits it to the automation device;

8. after receiving the test result signal, the automation equipment performs corresponding result actions;

9. completing a test IC cycle;

10. repeating the steps 1-9 for periodic circulation.

The GPIB-to-Ethernet communication card provided by the utility model is connected with the automation equipment to be tested through the GPIB protocol interface 30, is connected with the testing equipment through the Ethernet protocol interface 50, and can convert GPIB protocol signals sent by the automation equipment into Ethernet protocol signals through the processor 10 and sends the Ethernet protocol signals to the testing equipment; for the Ethernet protocol signal sent by the test equipment, the Ethernet protocol signal can be converted into a GPIB protocol signal by the processor 10 and sent to the automation equipment; therefore, the problem that the equipment cannot communicate online due to inconsistent interface protocols can be solved, normal communication connection between the automatic equipment and the testing equipment is realized, and normal running of the equipment testing process is ensured.

Fig. 7 is another schematic diagram of a GPIB-to-ethernet communication card according to an embodiment of the present utility model, as shown in fig. 7, and in some embodiments, further includes: a functional parameter setting circuit 60 connected to the processor 10.

Specifically, in the actual use process, various parameters (such as GPIB protocol parameters, ethernet protocol parameters, etc.) need to be flexibly set according to the actual situation, so the functional parameter setting circuit 60 is used to realize the functional parameter setting, and the functional parameter setting circuit 60 specifically adopts a multi-bit dial switch, and realizes the setting of the functional parameters by setting "1" and "0". For example, fig. 4 is a schematic structural diagram of a functional parameter setting circuit 60 according to an embodiment of the present utility model. For example, fig. 8 is a schematic structural diagram of a functional parameter setting circuit 60 according to an embodiment of the present utility model.

Referring to fig. 7, in some embodiments, further comprising: a status indication circuit 70 coupled to the processor 10.

Specifically, multiple paths of LED signals can be used to realize status signal indication in the working process of the processor 10, so that problems can be found and processed in time. For example, fig. 9 is a schematic diagram of a status indication circuit 70 according to an embodiment of the present utility model.

Referring to fig. 7, in some embodiments, further comprising: a system power supply 80 connected to the processor 10.

Specifically, the system of the GPIB-to-Ethernet communication card adopts multi-voltage power supply, external DC24V direct current voltage is input, and after internal voltage stabilization and depressurization processing, multi-path voltage is generated so as to meet the power supply of the system. For example, fig. 10 is a schematic structural diagram of a system power supply 80 according to an embodiment of the present utility model.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (6)

1. A GPIB-to-ethernet communications card comprising:

the processor is used for realizing conversion between the general interface bus GPIB protocol signal and the Ethernet protocol signal;

a signal driver coupled to the processor;

the GPIB protocol interface is used for connecting the signal driver and the automation equipment to be tested;

an ethernet controller coupled to the processor;

and the Ethernet protocol interface is used for connecting the Ethernet controller and the testing equipment, and the testing equipment is used for testing the automation equipment.

2. The GPIB-to-ethernet communication card of claim 1, further comprising: and the functional parameter setting circuit is connected with the processor.

3. The GPIB-to-ethernet communication card of claim 1, further comprising: and the state indicating circuit is connected with the processor.

4. The GPIB-to-ethernet communication card of claim 1, further comprising: and a system power supply connected with the processor.

5. The GPIB-to-ethernet communication card of claim 1, wherein the ethernet controller is coupled to the processor via a serial peripheral interface, SPI, bus.

6. The GPIB to ethernet communications card of any of claims 1-5, comprising at least one of:

the model of the processor comprises XC7A75;

the model of the signal driver comprises 74LVC1T45;

the model of the Ethernet controller comprises W5500.