Find out the weakness of the signal to create an all-round Bluetooth wireless smart key

In recent years, with the rising awareness of environmental protection, the electric vehicle market has gradually grown, and the demand is increasing. Electric vehicles have set off a technological revolution for the automobile and locomotive industry. In addition to reversing the frame structure and design of the traditional car body, the peripheral accessories have also been upgraded one by one, using RF (Radio Frequency) radio frequency technology to create wireless remote control, thin and light automobile and locomotive accessories , it has become the mainstream trend under the current wave of wisdom, and the product types are becoming more and more diverse.

In recent years, with the rising awareness of environmental protection, the electric vehicle market has gradually grown, and the demand is increasing. Electric vehicles have set off a technological revolution for the automobile and locomotive industry. In addition to reversing the frame structure and design of the traditional car body, the peripheral accessories have also been upgraded one by one, using RF (Radio Frequency) radio frequency technology to create wireless remote control, thin and light automobile and locomotive accessories , it has become the mainstream trend under the current wave of wisdom, and the product types are becoming more and more diverse.

Nowadays, many manufacturers have abandoned traditional keys and switched to Keyless keys supported by Bluetooth wireless technology, which is the best embodiment of intelligent design. However, the application of composite radio frequency technology brings a smoother and more burden-free experience, but it also greatly increases the difficulty of design, and it is also a big test for the stability of RF performance.

360-degree all-round detection to find out the dead corner of the problem

Allion’s testing team found that in practical applications of Bluetooth wireless keys, there are indeed some usage restrictions that will seriously affect the experience of car owners. The test team took an electric scooter as an example to conduct an OTA (Over-The-Air) test in a shielded room, aiming at the Total Radiated Power (TRP) and Total Isotropic Sensitivity (TIS) of the Bluetooth device of the electric scooter. ) for inspection, and found that the Bluetooth transceiver of the body does indeed have a dead angle of induction. Where there is a shortage in the illustration below, that is where the dead end is. It means that the car is mainly unlocked or unlocked from this angle, and the electric motorcycle will not have any response. Imagine when you parked your car on the side of the road, and when you came back, you found that your car was flooded by a sea of ​​cars, and you couldn’t start the car, and you couldn’t find the problem. You must feel quite helpless and anxious.

As shown in the figure below, after TRS and TIS test analysis, it is obvious that the Bluetooth of the electric motorcycle cannot be sensed at a certain angle. If the owner just stands at this angle, it is very likely that the lock cannot be unlocked.

Find out the weakness of the signal to create an all-round Bluetooth wireless smart key

Find out the weakness of the signal to create an all-round Bluetooth wireless smart key

Your Smart Testing Partner——Allion RF Test Lab Wireless Communication Lab

The performance of RF products will be affected by many factors, such as noise, co-channel or adjacent-channel interference, and even user habits and current usage scenarios may be one of the culprits. In addition to controlling from the source and ensuring that the RF technology used complies with relevant standards and regulations, it is more important for manufacturers to conduct comprehensive testing to identify problems and pain points as soon as possible and prescribe medicines.

Allion RF Lab wireless communication laboratory can not only test the performance of RF products for you, but also provide further debugging services. Especially in recent years, with the increasing number of products using RF technology, there are often cases where frequency bands are blocked and various RF technologies interfere with each other. RF Lab can perform multi-faceted tests such as Noise analysis, De-sense, and Coexistence for interference conditions to help you find out the cause of interference RF performance.

The era of electric vehicles has arrived. As a pioneer in the testing industry, Allion will provide you with customized solutions based on years of RF testing experience, and join hands with you to welcome the new era of smart vehicles.

The Links:   EL512256-H2 LM190E08-TLB1

“In recent years, with the rising awareness of environmental protection, the electric vehicle market has gradually grown, and the demand is increasing. Electric vehicles have set off a technological revolution for the automobile and locomotive industry. In addition to reversing the frame structure and design of the traditional car body, the peripheral accessories have also…