Methodology for Long-Distance Transmission in Distributed Sensing Acquisition Systems
In order to address the remote transmission challenges of sensing signal in specialized scenarios such as those involving intense magnetic fields and diverse sealed compartments within a distributed acquisition system,an effective solution has been developed.This solution entails the strategic design of proximity-based conversion circuits at both the designated test point locations and the central control acquisition end.Under this scheme,at the measurement terminal situated remotely from the main control acquisition unit,digital sensing signals were directly transmitted through the ⅡC/SPI long-distance transmission circuitry.In contrast,analog sens-ing signals undergo a preliminary transformation into digital values before being channeled into the transmission circuit.Upon reaching the central control acquisition terminal,the ⅡC/SPI long-distance receiving circuitry interprets and integrates these signals into the cen-tral processing unit.This sophisticated design enables seamless long-distance data transmission from the sensing points to the central control acquisition terminal,effectively obviating the need for multiple control acquisition endpoints.The proposed transmission methodology is meticulously tailored to accommodate a range of sensor types and transmission protocols,and its efficacy has been rigorously examined and validated.The outcomes of extensive testing affirm the stability and high-caliber transmission of sensing signals achieved through this method.
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