Transmission rate of the wireless module of the higher the better it

The wireless module is the most important hardware link in the Internet of Things, and it is irreplaceable. So when we choose a wireless module, each parameter should be carefully considered according to the actual situation of the project. It is also something that has happened because of a parameter that caused the project to delay or fail.

When purchasing wireless modules, many customers believe that the higher the parameters of the module, the better the performance of the module. This idea is wrong. The data level of each parameter is not equal to the performance of the module. The parameters of the module should be selected according to the actual situation of the project. Take the transmission rate of the wireless module as an example. The higher the transmission rate, the higher the performance. The better?

First of all, we first understand what the transmission rate of the wireless module is. The transmission rate refers to the speed at which the wireless module transmits data. When the transmission rate is higher, the transmission speed is faster, and more data can be transmitted per unit time. After this understanding, do you think the higher the transmission rate, the better? In fact, when the transmission rate is higher, the signal is more likely to be attenuated, resulting in a shorter transmission distance.

We take the actual test report of the LoRa1262 wireless module as reference data:

The data in the table is the data measured by our engineers on National Highway 107 in Bao'an District, Shenzhen. It can be seen from the table that under the condition of the same other parameters, the transmission rate distance of 0.8Kbps is twice as much as the transmission rate distance of 9.5Kbps. This is also a good proof that when the rate is lower, the transmission distance of the wireless module is The farther.

So, when the transmission rate of the wireless module is higher, the performance will be worse? This statement is also incorrect. If we have a short distance, a high-speed module is definitely better. If there is a distance requirement for the module, it is undoubtedly more appropriate to choose a low-speed module.

As for how to choose the transmission rate, we can only choose according to our actual situation. The same is true for other parameters. It is most important to choose the parameter that suits you, not the higher the performance of the module, the better.