How to secure the required Signal to Noise ratio(S/N) in outdoor IR to…
페이지 정보
본문
To secure the required S/N＊ratio in the outdoor environment is one of the most important technology.
The stronger the sunlight interference, the worse the S/N ratio becomes and the failure rate of the Touch function will increase if the S/N ratio of the Touch module deteriorates.
Thus, the technologies applied to the IRON provide a stable touch function in the outdoor environment by ensuring S/N ratio.
As mentioned above, there are two main elements of noise. One is the interference from the sunlight and the other is the noise from the circuit of the PCBA Board. In other words, it is important to have the S / N required for IR sensor technology, and engineers should consider reducing this overall noise intensity in outdoor environments.
Basically, the PCB circuit should also be designed to reduce noise, and the impedance of the IR signal as well as the low noise power-line design should also be considered.
Based on the above-mentioned basis, IRON was designed by securing the required S/N ratio for multi-touch operation in the outdoor environment and at the same time, special filters applied to IRON, optimized flame and PCB design contributed to ensuring a satisfactory S/N ratio.
＊Required S/N: Minimum Signal to Noise ratio to perform a Multi-Touch Functions