Highly-reliable pulse counting test system based on FPGA (Field Programmable Gate Array)

Abstract

The invention relates to a highly-reliable pulse counting test system based on FPGA (Field Programmable Gate Array). The highly-reliable pulse counting test system based on FPGA comprises a test system, a digital multimeter and auxiliary equipment, wherein the auxiliary equipment is used for generating a test current and providing the test current to a circuit to be tested, the test system provides a sampling control signal to the digital multimeter and provides multiple paths of pulses for the circuit to be tested, and the digital multimeter carries out voltage sampling to the test current of the auxiliary equipment under the control of the sampling control signal. The highly-reliable pulse counting test system based on FPGA solves the technical problems of pulse counting methods in prior arts that real-time property is hard to guarantee, counting errors exist, the test system involves many instruments and equipment, the universality is not strong, labor intensity is high, relatively numerous personal errors exist, and testing efficiency is low; and the highly-reliable pulse counting test system based on FPGA can realize highly-reliable reversible counting of multiple paths of pulses, can output multiple paths of pulse signals with adjustable time sequence, and can measure related technical indexes of an I / F conversion circuit.

Description

technical field [0001] The invention relates to an FPGA-based high-reliability pulse counting test system. Background technique [0002] High-precision I / F conversion circuit is the core circuit in the inertial measurement device, and its performance index directly affects the measurement accuracy of the inertial measurement device. Therefore, it is very important to accurately test the performance index of the high-precision I / F conversion circuit. [0003] The output of the I / F conversion circuit is 2 to 13 pulses with strict timing and logic relationship. The traditional pulse counting method is based on the bus and hardware interrupts. It is difficult to ensure real-time performance when the input pulse frequency is high, and there are counting errors; moreover, the test system contains many instruments and equipment, which is not universal and labor-intensive. There are many human errors and the test efficiency is low. In order to improve the test process, increase pr...

AI Technical Summary

Problems solved by technology

The traditional pulse counting method is based on the bus and hardware interrupts. It is difficult to ensure real-time performance when the input pulse frequency is high, and there are counting errors; moreover, the test system contains many instruments and equipment, which is not universal and labor-intensive. Many human errors, low test efficiency

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