# Research on Data Transmission of Laser Sensors for Reading Ruler
## 6 Conclusions  
Binary encoding is an encoding mode based on 0 and 1 bits that is widely used in computer science, communication, and other fields. It has the advantages of simplicity, easy implementation, and high storage and transmission efficiency. However, it may produce large errors when processing continuously changing signals. In addition, the anti-jamming capability of binary code is relatively weak. The decoding process may encounter problems once disturbed.  
Gray code is a special binary encoding method in which there is only a one-bit difference between two adjacent values. This characteristic increases the stability of Gray code in the process of converting analog signals to digital signals. At the same time, Gray code also has good anti-interference capability, which can reduce decoding errors to some extent. The disadvantages of Gray code are that its encoding process is relatively complex, and its storage and transmission efficiency is slightly lower than that of binary encoding.  
Shift continuous encoding is a method of converting analog signals into digital signals. This method adapts to the change in signal by continuously changing the number of encoded bits. This coding mode can continuously represent changing signals more accurately and reduce errors. At the same time, displacement continuous encoding has high flexibility and adaptability and can be applied to various complex scenes. However, it is difficult to implement, requires specialized hardware and algorithms, and may generate large delays.  
Under the condition of finite bits, the hybrid encoding method combines random sequence encoding and shift continuous encoding to increase location encoding so as to meet wider application requirements. Hybrid encoding combines the advantages of the absolute encoder and the incremental encoder to achieve higher accuracy and stability. Its working principle is to provide accurate monitoring and feedback of the position and speed through the combined operation of the two encoding modes. Positioning accuracy improved by 33.3%. Error tolerance improved by 42%, Response time improved by 42%.  
In order to monitor the swing deviation of the encoder in real time, we can install a phase laser ranging sensor on the code reader. This sensor can emit a laser beam, receive reflected optical signals, and accurately calculate the distance between the reader and the encoder by measuring the return time or phase change of the laser beam. If the encoder scale swings, this distance change is captured by the sensor and converted into the corresponding electrical signal output. We can obtain the swing offset of the encoder by analyzing and processing the electrical signal output by the sensor.  
Phase laser ranging sensors offer several other advantages, making them ideal for monitoring the oscillation offset of encoder scales. First, they have very high measurement accuracy and stability, which can ensure the accuracy of the monitoring results. Second, they can operate normally in various harsh industrial environments, such as high-temperature, high-humidity, and dust environments, with high adaptability and reliability. Finally, they can be integrated and linked with other automation equipment to enable more intelligent monitoring and control.  
In conclusion, installing phase laser ranging sensors on the code reader is an efficient and reliable method of monitoring encoder scale swing. This method can not only improve  
\begin{table}
\begin{tabular}{c c c c} \hline Average recognition time (ms) & 350 \(\pm\) 25 & 195 \(\pm\) 17 & 44.3\% \\ \hline Low light success rate & 65\% & 89\% & 24\% \\ \hline Partial Occlusion Tolerance Rate & 34\% & 76\% & 42\% \\ \hline Maximum recognition distance (m) & 1.2 & 2.4 & 100\% \\ \hline \end{tabular}
\end{table}
Table 9: Performance Comparison Test Data.  
product quality and production efficiency but also reduce production costs and maintenance costs and bring greater economic and social benefits to enterprises.