## 5 Recommended Configuration of Parameters with a High Failure Rate
### Recommendation of Parameter Configuration of Video Surveillance Equipment
The following recommended configurations for toll plaza cameras, surveillance head cameras, and surveillance HD cameras are shown in Table 7. \begin{table}
\begin{tabular}{p{28.5 pt} p{28.5 pt}} \hline Anti-corrosion and anti-impact & (1) Toll plaza camera, surveillance head camera: 1. Corrosion resistance, impact resistance; 2. The column is treated by hot-dip galvanizing and then treated by plastic spray. \\ \hline Temperature and humidity range & (1) Toll Plaza camera: 1. Humidity less than 95\% (no condensation); 2. Working temperature and humidity: \(-\)40 \({}^{\circ}\)C \(\sim\) 70 \({}^{\circ}\)C. \\ \hline Parameters related to external environment & (1) Toll Square camera (gun camera): 1. It has the functions of dust prevention, fog prevention, and defrosting; 2. Protection level IP67; (2) Monitoring head camera: 1. Protection level: IP67, dustproof, antifogging, defrosting; 2. Installation of integrated aluminum outdoor protective cover, die-cast aluminum plate, stainless steel hardware, spray protection, waterproof seal; (3) Monitoring high-definition fixed cameras: 1. The protection level is not lower than that of IP66. \\ \hline Sight distance & (1) Charge plaza camera (gun camera), surveillance head camera: 1. Laser night vision distance: \(\geq\)500 m; (2) Monitoring head camera: 1. The supplementary light distance is not less than 50 m. \\ \hline \end{tabular}
\begin{tabular}{p{28.5 pt} p{28.5 pt}} \hline \hline  & (1) Toll square camera (gun camera): 1. Horizontal 360\({}^{\circ}\) infinite rotation, no dead angle; automatic cruise can be set, horizontal scanning; 2. Camera requires effective pixels: \(\geq\)4 million pixels; 3. Minimum illuminance: color \(\leq\)0.0003 lx, black and white \(\leq\) 0.0001 lx; signal-to-noise ratio: \(\geq\)50 dB; illumination adaptation range: \(\geq\)120 dB; 4. Lens near focal length: \(\leq\)6 mm; far focal length: \(\geq\)208 mm; 5. Lens image resolution: \(\geq\)2560 \(\times\) 1440; 6. The head supports horizontal hand control speed not less than 200/s and vertical hand control speed not less than 83\({}^{\circ}\)/s. The horizontal rotation range is 360\({}^{\circ}\) continuous rotation, the vertical rotation range is upward \(\geq\)40\({}^{\circ}\), downward \(\geq\)90\({}^{\circ}\), and the positioning accuracy of the head is 0.01\({}^{\circ}\); 7. Mean time between failures (MTBF): \(\geq\)30,000 h; (2) Monitoring head camera: 1. Effective pixels: \(\geq\)4 million pixels 2. Minimum illuminance: color \(\leq\) 0.0003 lx, black and white \(\leq\) 0.0001 lx; signal-to-noise ratio: \(\geq\)50 dB; illumination adaptation range: \(\geq\)120 dB; 3. Near focal length: \(\leq\)6 mm; far focal length: \(\geq\)208 mm; 4. The angle of view of the lens is 59.8 (W) \(\sim\) 2.0 (T), the horizontal manual speed is not less than 200/s, and the vertical manual speed is not less than 83\({}^{\circ}\)/s. The horizontal rotation range is 360\({}^{\circ}\) continuous rotation, and the vertical rotation range is upward \(\geq\)40\({}^{\circ}\)and downward \(\geq\)90\({}^{\circ}\). \\ \hline \end{tabular}
\end{table} 
Table 7: Recommended configuration table for video surveillance equipment (camera) parameters. The above process reflects the strategies and steps for configuring technical parameters of video surveillance equipment, and this strategy can also be used to optimize the technical parameters of other equipment with high failure rates.