The importance of sleep function in wireless transceiver module

The sleep function is a basic function of the wireless transceiver module. It will often be submerged in many parameters of the wireless transceiver module, such as: power, frequency, sensitivity, transmission distance, etc. These are the parameters that customers are most concerned about, so many users will be very It is easy to ignore it. So is the sleep function important to the wireless transceiver module?

Before answering the question, let us first understand what the sleep function of the wireless transceiver module is. The hibernation function, as the name implies, is to enter the state of sleep. Whether human or animal is in the state of sleep, the energy required to consume will be greatly reduced. This is also the reason why many animals need to enter the state of hibernation to survive the cold winter. In the wireless transceiver module, the same is true. The sleep function means that the module enters the sleep state when it is not working, and the current when there is no signal input, that is, the device itself consumes current without being affected by external factors. The current that needs to be consumed is the lowest, and the sleep current is generally calculated in uA.

The main reason why the project chose the wireless transceiver module to replace the traditional cable communication is because in some field work environments (such as: industrial, mountainous areas, etc.), if you use traditional cables, it will be very difficult to wire and will It consumes a lot of manpower and material resources, so the wireless transceiver module will show a huge advantage in this respect. But problems also follow. Because of the harsh working environment, no stable power supply will continue to be supplied to the wireless transceiver module to work, so battery-powered power supply methods have to be adopted. At this time, a low-power wireless transceiver module has definitely become the first choice for the project. It can not only help the project last longer work cycles, but also greatly reduce the operation and maintenance costs.

In the field of wireless communication, the main reference basis for a low-power wireless transceiver module is its receiving current. The lower the receiving current, the lower the power consumption. Secondly, referring to the sleep current of the wireless transceiver module, the lower the sleep current, the lower the power consumption when the wireless transceiver module is in the sleep state.

Now we return to the original question in the article, is the sleep function important to the wireless transceiver module? Thinkwireless’s answer is that if in a battery-powered project, the sleep current is very important. The wireless transceiver module will generate current when transmitting and receiving again, but they also generate current only when transmitting or receiving. Therefore, when the module is not transmitting and receiving, it will enter the sleep state most of the time. To ensure the lowest power consumption, the sleep current is an important parameter that affects the working time of the module. Therefore, the sleep current is particularly important when only battery power is used.

The sleep current and time of the wireless transceiver module are not independent parameters. They can be used together to calculate the power consumption. The current parameter is used to evaluate the power of the module, whether the power consumption is fast or the power consumption is slow, but how much power is consumed? It depends on how much time is used. Assuming that the sleep current of the module is 1uA, the power consumed by the module in one hour is 1uAh.