How Ubiquitous RF Noise Affects Our Lives (1)
When you pass an intersection where a high-speed train passes, the talking phone will immediately short-circuit. When you turn on the electric toothbrush, the picture and sound of the old TV will be interrupted. As you approach the electronic transformer located on the top of the mountain, the FM radio goes like a non-stop. This is how radio frequency noise pollution interferes with our lives. It is everywhere. This is a pollutant that you cannot see, hear, smell or taste. Virtually any electronic device can emit radio frequency noise, from generators to car engines to the computer on your desk. Those high-voltage neon lights that can be seen everywhere and the fluorescent ballasts in our houses are beeping at a high frequency all the time, dare you not hear it? Industrial machinery, elevators, welders, relays, power switches, and even switches to adjust the brightness of desk lamps have all joined this army of RF noise.
Problems caused by radio frequency noise pollution can be divided into the following four categories. First, it increases the cost of deploying wireless systems because it reduces the battery life of the device. Second, it introduces a wide variety of interference across a wide range of frequencies. At the same time, there is currently no policy intervention against this noise pollution, because the more interference you have, the more frequency bands you need to switch in to get the message out. Therefore, the actual wireless network cannot actually achieve the pre-designed data transmission efficiency. Finally, trying to track down the source of RF pollution is very expensive, and when you want to find out, it's hard to find the source as long as the user of the electronic device disables it.
It is conceivable that this radio frequency noise pollution will be more serious when the Internet of Things fully enters into life. The popularity of the Internet of Things will enable countless ordinary objects around us to be equipped with complex radio frequency control chips, such as door locks, light switches and all electrical appliances, even cars and even our bodies may be equipped with chips. It's all about making everything online. Every chip becomes a potential source of RF noise pollution. Although there are many technical means to solve this problem, the large number of RF control chips used in various products means that manufacturers have no incentive to add the function of noise shielding to their products. Because this will undoubtedly increase its manufacturing cost. We often say that silence is golden, and yes, it costs money to get a quiet environment.
