FPGA-based trenchless sensing device bus sharing system, method and device

Abstract

The invention discloses an FPGA-based trenchless sensing device bus sharing system. The system comprises the following modules: a plurality of real-time data generation modules, a multi-port FPGA chip, a bus BUS and a memory, the plurality of real-time data generation modules send real-time data to the multi-port FPGA chip according to a priority sequence, and then the real-time data is sent to the memory through the bus BUS and / or directly. Each real-time data generation module is equivalent to a data acquisition and generation unit MCU; through the multi-port FPGA chip, no matter how many real-time data generation modules are arranged on the trenchless sensing device,the real-time data can be transmitted through the multi-port FPGA chip and then sent to the memory through the bus BUS and / or directly by defining the priority of the multi-port FPGA chip, on one hand, access conflicts possibly caused by a double-port RAM band are avoided, and on the other hand, the overall cost is alsoreduced.

Description

technical field [0001] The invention relates to the field of drill bit information transmission, in particular to an FPGA-based non-excavation sensing device bus sharing system, method and device. Background technique [0002] With the large-scale development of urban infrastructure, the application of trenchless technology is becoming more and more extensive, especially in the laying of various pipelines and underground projects such as subway construction. In order to ensure the laying and construction according to the predetermined route, drilling The surface process needs to use the sensor device to calculate the positioning data of the drill bit, and at the same time transmit the display data, GPRS data, and keyboard data. Therefore, there are multiple MCU processors working together to exchange data or share data. Usually, the exchange data between MCU is through the standard UART serial port or high-speed SPI, MBSP interface to exchange data with each other, and the h...

AI Technical Summary

Problems solved by technology

Usually, the exchange data between MCU is through the standard UART serial port or high-speed SPI, MBSP interface to exchange data with each other, and the higher-speed practical data sharing is generally realized by dual-port RAM, which is more widely used in mobile phones and large-scale servers. Many, but the price of dual-port RAM is high, and there is a technical problem of dealing with access conflicts of multiple MCUs at the same time, and it can only support two MCUs to share data at most. When more MCUs are required to share data in the system, it cannot be satisfied.

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