Multi-bus communication system of cross modulation instrument

Abstract

The invention discloses a multi-bus communication system of a cross modulation instrument, which comprises an industrial personal computer, a FPGA (Field Programmable Gate Array) expansion board, a first information source module, a second information source module, a power amplification module and a receiver module, wherein a PC104 bus is expanded by adopting the FPGA, and the conversion of the timing sequences of hardware buses is realized through programming so as to achieve the purposes of multi-bus communication and the communication between an industrial control board and all peripheral modules. In the communication system disclosed by the invention, the communication means of a bus of the industrial control board is expanded; the number of IO (Input / Output) ports of the control board is increased; the speed and the throughput of the bus are improved; and the peripheral equipment of equipment is independently controlled, so that the CPU (Central Processing Unit) resource is not occupied; and moreover, the parallel control of the equipment can be realized.

Description

technical field [0001] The invention relates to the communication field, in particular to an intermodulator multi-bus communication system. Background technique [0002] Intermodulators, also known as passive intermodulation analyzers, measure IM products whose spectrum falls within the analyzer's measurement frequency band. [0003] In radio frequency or microwave multi-carrier communication systems, intermodulation distortion will generate crosstalk in adjacent channels for analog microwave communication; for radio frequency communication, it will reduce the spectrum utilization rate of the system and deteriorate the bit error rate. [0004] At present, the communication mode of the control host of the intermodulator is mostly based on the RS485 bus or the multi-bus communication based on the single-chip microcomputer. The communication speed of RS485 is relatively slow, and based on the communication of single-chip microcomputer, the number of IO ports is limited, and th...

AI Technical Summary

Problems solved by technology

The RS485 communication method is relatively slow, and based on the communication of the single-chip microcomputer, the number of IO ports is limited, and the main frequency utilization rate of the CPU is not high, which will also affect the communication of the interface, and the control of the peripheral modules will occupy CPU resources.

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