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A new type of test and measurement instrument

A measuring instrument and a new type of technology, applied in the field of instrumentation and new testing and measuring instruments, can solve the problems of low transmission speed and high price of Ethernet circuits, and achieve the effect of good compatibility and support for hot swapping

Active Publication Date: 2021-02-26
VI SERVICE NETWORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on GPIB, RS-232, CAN and other external industrial buses, the compatibility is good, but the transmission speed is low
The transmission speed of the Ethernet architecture is not low, but the high transmission rate Ethernet circuit is expensive

Method used

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  • A new type of test and measurement instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020]The system controller 1 uses a Dell XPS 13 laptop; TXI bus 2 uses Thunderbolt 3 cables; expansion circuit 3 uses Akitio Note Lite PCIe expansion chassis; measurement and control circuit 5 uses NI PCIe-6363 acquisition card.

Embodiment 2

[0022]The system controller 1 uses Dell XPS 13 laptop; TXI bus 2 uses Thunderbolt 3 cable plus external clock and synchronization trigger cable; the first expansion circuit 3 uses Akitio Note Lite PCIe expansion chassis; the second expansion circuit 3 uses Sonnet Echo Express SE III expansion chassis; the first expansion circuit 3 is connected to the measurement and control circuit 5 using a JYTekPCIe-62205 acquisition card; the second expansion circuit 3 is connected to the measurement and control circuit 5 using a Juxing PXIe-PCIe adapter card plus a JXI PXIe-7506 intermediate frequency processor.

Embodiment 3

[0024]The system controller 1 adopts IntelNUC7i7BNH mini computer; TXI bus 2 adopts Thunderbolt 3 cable plus external clock and synchronization trigger cable; the first expansion circuit 3 and the second expansion circuit 3 adopt Akitio Note Lite PCIe expansion chassis; the first expansion circuit 3 , The second expansion circuit 3 uses a lightning interface optical fiber transponder to switch, and uses a 60-meter optical fiber connection; each expansion circuit 3 is connected to a PCIe-69529 dynamic signal acquisition card as the measurement and control circuit 5.

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PUM

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Abstract

The invention relates to a new type of testing and measuring instrument, which includes a controller and an expansion circuit. The controller is connected to the expansion circuit. The sum of the number of controllers and the number of expansion circuits is n+1, where n is a natural number from 1 to 100. The TXI bus or computer bus is connected, and the adjacent expansion circuits are connected through the TXI bus; each expansion circuit is connected to more than two measurement and control circuits. The invention is based on the "Thunderbolt" high-speed serial interface and clock synchronization trigger circuit supported by Intel and many CPUs. It realizes the function of synchronous test and measurement at a data rate of up to 40Gbps, and under the Thunderbolt interface, the compatibility between various modules of the instrument Better, and supports hot-swapping.

Description

Technical field[0001]The invention belongs to instrumentation technology in the field of test and measurement technology, and specifically relates to a new type of test and measurement instrument.Background technique[0002]Most test and measurement instruments need to be connected to each instrument sub-module through a bus. Most of the traditional measuring instruments use PCI bus, PXI bus, GPIB bus, RS-232 bus. In the prior art, PXIe is fast but requires a special chassis backplane controller, the instrument cost is high, the protocol compatibility threshold is high, and the compatibility between measurement and control modules of different manufacturers and chassis and controllers is not good. PCIe is fast and low in cost, but fewer and fewer computers provide corresponding slots. Based on GPIB, RS-232, CAN and other external industrial buses, the compatibility is good, but the transmission speed is low. The transmission speed of the Ethernet architecture is not low, but the high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38
CPCG06F13/387
Inventor 邵晖
Owner VI SERVICE NETWORK