Insulation resistance detection board based on TMS320F28335

Abstract

The invention provides a TMS320F28335-based insulation resistance detection board, which comprises a TMS320F28335 DSP (Digital Signal Processor) chip, a plurality of interface modules, a communication module, a level conversion module, an analog-to-digital acquisition module, a detection module and a power supply module, the plurality of interface modules comprise 18 paths of PWM output interfaces, 6 paths of event capture input interfaces, 16 channels of 12-bit digital-to-analog conversion interfaces, 2 paths of McBSP interfaces, 1 path of I2C interfaces, 3 paths of SCI interfaces, 1 path of SPI interfaces, 2 paths of CAN interfaces and 1 path of 16-bit / 32-bit external storage buses. Good universality and expandability are achieved, the number of connectable communication types is large, the number of A / D collection channels is large, the number of PWM interfaces is large, the number of universal I / O is large, the storage capacity is considerable, the size is small, and functions are convenient to expand; and the circuit has an enough wide detection voltage allowable range, is suitable for multi-type power supply input, and is wide in application range.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to an insulation resistance detection board based on TMS320F28335. Background technique [0002] Insulation resistance is the most basic insulation index of electrical equipment and electrical circuits. Due to the high resistance value of insulation resistance, the insulation resistance tester will generate high voltage during operation. Different digital signal processing is required for different test environments and equipment. device. With the development of science and technology, the application of DSP digital signal processor is more and more extensive, and it has received more and more attention. DSP digital signal processor is a common processor in the field of industrial control and information processing. With the diversity of application systems, various minimum application systems are derived. When the sound of the application scene changes, it needs to be ...

AI Technical Summary

Problems solved by technology

C6000 series DSP has high performance and fast operation speed, but it has no related peripheral interface, so it is difficult to realize external expansion; while C2000 series is based on 32bit DSP architecture, generally only has CAN interface, does not support external storage bus, and cannot meet the needs of system expansion

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