Wireless acquisition method of synchronous serial interface encoder

Abstract

The invention discloses a wireless acquisition method of a synchronous serial interface encoder. The method comprises the following steps: 1) using an MAX490E chip as a hardware interface to communicate with an SSI encoder; 2) using an I / O port of the single-chip microcomputer for simulating a clock pulse sequence which is required by SSI and meets specific requirements, sending clock signals meeting the specific requirements to the SSI encoder through the MAX490E chip and the CLOCK signal line, and receiving data returned by the SSI encoder through the MAX490E chip connected with the DATA signal line in the clock pulse sequence sending process and then receiving the data through the I / O port of the single-chip; and 3) after receiving the data, enabling the single-chip microcomputer to analyze the data and send the data to the upper computer through the wireless communication module in the form of hexadecimal data again. According to the method disclosed by the invention, the data of the SSI encoder can be acquired and analyzed at very low cost by using mature industrial devices.

Description

technical field [0001] The invention relates to an SSI encoder signal acquisition technology, in particular to a wireless acquisition method for a synchronous serial interface encoder. Background technique [0002] The SSI communication protocol is called a synchronous serial interface (Synchronous Serial interface). It only transmits the information of the encoder through the serial mode of the clock and data signals, so it has the advantages of simple installation, strong anti-interference ability, long transmission distance, Stable and reliable features. The SSI communication protocol has a very wide range of applications in the field of encoders and controllers. It is adopted by world mainstream encoder manufacturers such as Heidenhain and STEGMANN. Therefore, synchronous serial interface encoders occupy a major share in the encoder market. The field has become absolutely mainstream. [0003] At present, the acquisition of SSI encoder signals in industrial control site...

AI Technical Summary

Problems solved by technology

[0003] At present, the acquisition of SSI encoder signals in industrial control sites requires the use of dedicated control modules from corresponding manufacturers, which are costly and bulky and very inconvenient to use. To collect and analyze SSI encoder signals in self-made control systems mainly use SSI communication ports. The dedicated chip or the use of FPGA to simulate the sending and receiving of SSI, the above methods have the disadvantages of large limitations, high cost, and low selectivity.

At the same time, various equipment and cables are densely distributed in the industrial control site, which makes the operation inconvenient due to the narrow space, and the signal line when communicating with the SSI encoder also causes troubles to the operators.

Therefore, the currently used SSI encoder signal acquisition method is extremely inconvenient in industrial control sites

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