How to solve the problem when the Bluetooth module encounters interference signals?

As Bluetooth modules are widely used in more and more electronic devices, we may encounter signal interference problems. Under the conditions of the same transmitting power and receiving sensitivity, the Bluetooth module with stronger anti-interference ability can transmit farther, and the same frequency band or harsh environment can also cause very bad interference to it, if the environment can not be changed , So how to avoid this interference?

1. Choose high-performance components

Reasonable components should be selected, especially in the process of selecting hardware anti-interference methods, the selection of related components should be based on system-related parameters, which will greatly improve the anti-interference performance of the entire system.

2. Bluetooth module shielding cover

The main function of the shield is to shield the influence of external electromagnetic waves on the internal circuit and the electromagnetic waves generated inside to radiate outwards, and improve the anti-interference effect of the Bluetooth module. wifi jammer

It is recommended to use FSC-BT630 BLE 5.0 module (nRF52832) and FSC-BT909 class1 Bluetooth 4.2 dual-mode module (CSR8811) with shielding cover.

3. External antenna

The Bluetooth module can install an external antenna for applications that use a metal housing or require a high-performance antenna.

4. Stay away from interference sources

Avoiding interference sources is the most effective and direct method. Considering the hardware anti-interference technology, a low-pass filter can be added, which can introduce high-frequency noise into the power grid and thereby reduce power interference. Filters are distinguished according to frequency, for example: 433MHz can only use the corresponding frequency filter, its main function is to filter out other frequencies not belonging to 433MHz, prevent interference from other frequency bands, so as to achieve anti-interference ability Effect.

If you don’t know about it, click on the online consultation for consultation. Dojammer reminds users that when choosing a Bluetooth module, they must pay attention to what kind of environment their products are used in, and the life cycle of the products.