High-speed digital optical fiber isolation transmission device and method

A fiber optic isolation and transmission device technology, which is applied in the direction of fiber optic transmission, transmission system, electromagnetic wave transmission system, etc., can solve the problems of inability to achieve isolated transmission, low transmission rate, poor linearity and precision, etc., to improve transmission capacity and system performance , The effect of reducing communication costs

CN107800481AInactive Publication Date: 2018-03-13THE 41ST INST OF CHINA ELECTRONICS TECH GRP
4 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-03-13
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a high-speed digital optical fiber isolation transmission device and method, and belongs to the field of high-speed digital isolation transmission control. A digital technologyand an optical fiber transmission technology are combined, so that the data transmission performance is excellent; an optical fiber is used for transmission, the device and the method have the advantages of high isolation voltage level, high anti-jamming capability, large input dynamic range, high response speed and the like, and high-speed and high-precision signal transmission can be realized in the high-voltage and strong-electromagnetic interference environment; a high-speed digital serial communication SERDES technology is adopted, low-speed parallel signals are converted into high-speedserial signals, and point-to-point double-wire data transmission is achieved, so that the transmission capacity and the system performance can be improved, and the communication cost is greatly reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of high-speed digital isolation transmission control, and in particular relates to a high-speed digital optical fiber isolation transmission device and method. Background technique

[0002] In the high-performance program-controlled high-voltage DC power supply and high-voltage source-measurement unit, in order to better suppress noise interference and improve the electromagnetic compatibility of the system, strict electrical isolation between the input circuit and the output circuit is required. At the same time, the signals on the input and output sides participate in the loop control, and good real-time communication must be carried out to obtain stable closed-loop adjustment performance of the power loop. Especially in the high-voltage source-measurement unit, since the output voltage is DC high voltage, the current detection, gear control and protection control signals on the output side are relatively weak (the ...

Examples

Embodiment Construction

[0039] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0040] The relevant principles of the device of the present invention are as figure 1 As shown, it includes a high-speed digital optical fiber isolation transmission device, which includes a high-voltage side unit and a low-voltage side unit; both the high-voltage side unit and the low-voltage side unit include an A / D converter, a data codec, a SERDES circuit, and a photoelectric conversion circuit;

[0041]The voltage and current detection signals on the high-voltage side are converted into digital signals by A / D, and the protection control signals are multiplexed into one parallel data. After the data is encoded, they are sent to the SERDES circuit to be converted into high-speed serial signals, and then passed through the photoelectric converter. It is modulated into an optical signal and transmitted to the low-voltage side with the optical ...