Dual negative feedback loop four-quadrant v/i source measure unit board based on cpci bus

Abstract

The invention provides a dual negative feedback loop four-quadrant volt-ampere measurement unit board based on the CPCI bus, including a CPCI bus module, an FPGA module, an ADC module, a DAC module, a relay control module, a power supply module, and a double negative feedback loop The CPCI bus module is the board system bus, which connects the host computer and the FPGA module for control and data exchange of the host computer. The FPGA module includes the CPCI bus bridge IP core, the ADC module control IP core, and the DAC module control IP core , the relay control module is used to switch the functions of the pressurized current measurement circuit and the current pressurized pressure measurement circuit function of the double negative feedback loop. The double negative feedback loop module includes a voltage source and current measurement negative feedback loop, a current source and a voltage measurement negative feedback loop road. The board provided by the technical scheme of the invention can work in all four quadrants, has a V / I source that meets the requirements of two-port testing, and the source can float, meeting the requirements of industrial automation testing.

Description

technical field [0001] The present invention relates to the field of automated testing of electronic equipment and components, in particular to a dual negative feedback loop four-quadrant volt-ampere (V / I ) source measure unit board. Background technique [0002] In the field of automated testing of electronic equipment and components, it is often necessary to measure the voltage-current (V / I) characteristics of a two-port network, or simultaneously measure the voltage-current (V / I) characteristics, obtaining these parameters can analyze whether important indicators such as the electrical characteristics of the device under test and the performance of components meet the test expectations. To protect the DUT, the test stimulus and measure unit needs to be designed as a floating source measure unit. In addition, the CPCI bus, as a compact PCI bus (Peripheral Component Interconnect, standard bus for interconnecting peripheral components), is widely used in aerospace testing...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to propose a dual negative feedback loop four-quadrant volt-ampere source measurement unit board based on the CPCI bus, which solves the technical problem that the four-quadrant excitation source and measurement cannot be performed in the prior art, and provides Measuring unit board with V / I source meeting two-port test requirements, working in all four quadrants

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