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Multi-way signal conversion and transmission device and method based on controller area network (CAN) bus line

A multi-channel signal conversion, CAN bus technology, applied in the bus network, data exchange through path configuration, comprehensive factory control, etc., can solve the problem that the accuracy and reliability of pitch detection cannot be guaranteed, the transmission distance of synchronous serial signals is short, Susceptible to interference and other issues, to achieve the effect of reducing occupancy, avoiding external interference, and ensuring accuracy

Inactive Publication Date: 2011-05-11
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

However, the synchronous serial signal has the disadvantages of short transmission distance, low rate, and easy interference, which cannot guarantee the accuracy and reliability of pitch detection.

Method used

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  • Multi-way signal conversion and transmission device and method based on controller area network (CAN) bus line
  • Multi-way signal conversion and transmission device and method based on controller area network (CAN) bus line
  • Multi-way signal conversion and transmission device and method based on controller area network (CAN) bus line

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the present invention is further described as follows:

[0025] combine figure 1 , The system structure as a whole is divided into three parts: signal acquisition unit, CAN communication unit and liquid crystal display unit. The signal acquisition unit mainly completes the pitch signal detection, encoding, signal processing and conversion; the CAN communication unit mainly completes the data signal conversion and long-distance transmission; the liquid crystal display unit mainly completes the signal processing and display.

[0026] combine figure 2 , the basic steps are roughly divided into three parts, which are the acquisition of data signals, the transmission of data signals and the display of data signals. Specifically, the three-way absolute photoelectric shaft-angle encoder detects and encodes the pitch angle values ​​of the three blades of the omnidirectional thruster, and then outputs them in the form of synchro...

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Abstract

The invention provides a multi-way signal conversion and transmission device and a method based on controller area network (CAN) bus. The multi-way signal conversion and transmission device comprises a signal acquisition unit, a controller area network (CAN) communication unit and a liquid crystal display unit, wherein the signal acquisition unit comprises two sets, each set comprises a three-way absolute type optical electric axial angle encoder and a main control chip, an station selection code (SSC) interface module of the main control chip is connected with the three-way type optical electric axial angle encoder through a multi-way strobe; a built-in CAN module of the main control chip is connected with a driven end of a CAN communication unit; the driven end of the CAN communication unit is connected with a receiving terminal of the CAN communication unit through the CAN bus; the receiving terminal is connected with the built-in CAN module of the control chip of the liquid crystal display unit; and the control chip of the liquid crystal display unit is connected with a light emitting diode (LCD) liquid crystal display. According to the invention, the synchronizing serial signal can be converted to the CAN signal quickly, accurately and stably, then is transmitted through the CAN bus, and the accuracy and reliability of the signal transmission of angle of pitch can be ensured.

Description

technical field [0001] The invention relates to a signal conversion long-distance transmission device. The invention also relates to a signal conversion long-distance transmission method. In particular, the invention relates to the conversion of the pitch detection signal of the submersible omnidirectional propeller and the long-distance multi-node simultaneous communication device and method. Background technique [0002] The omnidirectional propeller is a new type of special propulsion device. During the process of the blades rotating one circle, through the periodic change of the pitch angle of the blades, it not only generates axial thrust parallel to the propeller shaft, but also Generate thrust. Therefore, in addition to the functions that ordinary propeller propellers can achieve, the use of omnidirectional propellers can also achieve lateral and vertical movement, which can save the horizontal and vertical slot propellers, greatly reduce the weight of the submersib...

Claims

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Application Information

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IPC IPC(8): G05B19/418H04L12/40
CPCY02P90/02
Inventor 刘胜李秀鹏张青春李冰杜春洋
Owner HARBIN ENG UNIV
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