Vibration controller based on multi-core SoC processor

Abstract

The invention relates to a vibration controller based on a multi-core SoC processor. The multi-core SoC processor is a DM8148 processor and comprises FPGA logic, ADC analog channel input, DAC analog channel output, a digital IO interface, a USB2.0 host interface, a Gigabit Ethernet interface and an HDMI display interface, wherein the digital IO interface interacts with the FPGA logic through a 3.3V to 5V bidirectional voltage conversion, the FPGA logic receives an analog signal from the ADC analog channel input, and the FPGA logic transmits the analog signal through the DAC analog channel output, the FPGA logic also interacts with an EPCS64 program storage and a 64MByte SDRAM respectively, and the FPGA logic interacts with the DM8148 processor and transfers data to a program memory via anNAND interface. The vibration controller can provide high-performance real-time computing and convenient software expansion capabilities, the Gigabit Ethernet interface achieves long-distance communication, and a built-in high-capacity SSD disk is used for storing acquired time domain signals for test processing and analysis.

Description

technical field [0001] The invention relates to a vibration controller based on a multi-core SoC processor, which belongs to the field of vibration instruments and is used for environmental tests and reliability tests. Background technique [0002] The vibration controller is a device used to control the vibration generated by the vibrating table, and is widely used in product reliability and environmental adaptability tests. In the vibration control system, the controller has the ability to collect signals and output signals. The input signal is connected to the sensor to measure the acceleration signal of the vibration table; the output control signal drives the vibration table through the power amplifier. The controller also has a communication interface connected to the operating computer, and transmits data to the computer, which is displayed by the computer and provides a user operation interface. Some controllers can provide multi-device cascade synchronization capab...

AI Technical Summary

Problems solved by technology

[0003] In the existing equipment, the controller basically uses the SoC processor as the core to complete real-time control calculation and data transmission. The processor running software mostly uses a real-time operating system, which has good real-time performance, but its functions are relatively simple and the software can be expanded. restricted

[0004] In terms of the communication interface with the computer, it is basically connected to the control computer with the USB bus or 100M Ethernet. When the USB bus is used to connect, the controller and the operating computer share the same ground, which will cause large power frequency interference to the acquisition signal; 100M Ethernet The data transmission bandwidth is low, and it is difficult to transmit real-time time-domain acquisition signals;

[0005] In terms of synchronization of multiple devices, an additional synchronization clock line and trigger line are basically used as synchronization methods, which are expensive, short in communication distance, and susceptible to interference from the on-site environment

[0006] In addition, most of the existing controllers do not have the ability to store data in the time domain, and cannot provide raw data for data processing and analysis after environmental tests

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