Synchronous data acquisition and communication circuit

Abstract

The invention discloses a synchronous data acquisition and communication circuit, which is realized through a programmable gate array and a matched circuit. The synchronous data acquisition and communication circuit is characterized in that the circuit uses an FPGA clock management module to generate a standard frequency, a differential synchronous signal is then obtained through frequency division, and the same differential synchronous signal source is adopted to trigger all synchronous units. In addition, the synchronous data acquisition and communication circuit introduces testability design and port expansion design through modular design. Compared with a former simple data acquisition or communication unit, acquisition and uploading of all data and complete functions can be realized. Due to the modular design idea, mutual influences can be reduced, diversity of module communication forms is enhanced, and due to the testability design idea, monitoring of working states of each module and the overall body can be enhanced, and the debugging efficiency and the troubleshooting efficiency are improved; and after all unused ports of the FPGA are expanded outwardly, unified management is realized, and function expansion is facilitated.

Description

technical field [0001] The present invention relates to the technical field of data acquisition and communication, and more specifically to a synchronous data acquisition and communication circuit, which is mainly used for the acquisition of data signals of the electronic control system of the laser tracker, and with the photoelectric detector (PSD) measurement unit , femtosecond ranging unit, phase ranging unit, communication control circuit, etc. Background technique [0002] The laser tracker has the characteristics of large measurement range, high precision, good dynamic performance, and real-time on-site measurement. It has been widely used in high-end intelligent manufacturing industries such as aerospace, rail transit, and shipbuilding. It can not only carry out high-precision three-dimensional measurement of space static objects, but also carry out tracking and measurement of moving objects. [0003] The synchronous data acquisition and communication circuit, as the...

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Problems solved by technology

[0005] At present, the synchronous data acquisition and communication circuit in the domestic self-developed laser tracker has the following deficiencies: (1) The design of the data acquisition and communication circuit usually uses a dual-port RAM, which is not flexible enough for configuration; (2) There is no design for the limit signal (3) No temperature, humidity and pressure acquisition module is designed; (4) No general-purpose AD acquisition module is designed to realize Hall current acquisition; (5) The testability design of the circuit is lacking, and debugging and troubleshooting are inconvenient; ( 6) Insufficient versatility and extended functions

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