페이지 정보작성자 최고관리자 작성일2018-10-22 13:54
ST Microelectronics (ST) applied the NFC chip for smart key function to the European automobile brand for the first time in the world, and the vehicle started mass production last year. We are pleased to announce that we are pleased to announce that we are pleased to announce that we are pleased to announce that ST's NFC technology features and NFC's prospects for the automotive market will be met by Tae Young Yang, director of marketing, STMicroelectronics Memory Division.
NFC is a non-contact wireless communication technology that allows data to be exchanged within a distance of about 10cm using a frequency of 13.56MHz. With NFC, you can easily open and close door locks with your smartphone. You can easily use public transportation such as buses and subways as a substitute for transportation cards, and store coupons for shopping.
Since the communication distance of NFC is short, the user must directly touch the smartphone to the communication target device in order to exchange data. Therefore, the security is higher than RFID (Radio Frequency IDentification), which is widely used in the electronic tag. The advantage of NFC is that it can be both 'read' and 'write'. It also aims at zero power. For this reason, NFC can be used on bus cards that do not have a separate battery.
The NFC Forum decides whether to receive data from the standard NFC data format (NDEF) and Android and Windows (handover) and how to extend the Apple PayPay on the iPhone. More than 50% of smartphones will be compatible with NFC in 2015, but this is only used for Android phones. But as Apple begins to join the NFC Forum in 2015, the NFC market is likely to grow. In the meantime, Apple used NFC-based payment functions like Apple Pay, but recently announced Apple Watch at the Apple Developer Forum, which made it possible to use another NFC feature.
Taeyoung Yang said, "I expect the technology to expand more rapidly if NFC, which was mainly used in smartphones, is used by Apple as well as Android."
Automotive smart key that must be on at all times
NFC, power consumption technology is key
ST's NFC chips are largely classified into Smart Driving and IoT (Internet of Things). Automobiles are a conservative industry where safety is more important as they relate to the lives of people and must be tested for stronger security. On the other hand, it is also an industry where market expansion can be facilitated if product reliability is acquired in the industry.
In the automotive field, ST applied NFC technology to the first smart key for car doors, and the car with this technology was released for the first time this year. In addition, the NFC automatically adjusts the height and rearview mirror of the chair whenever the driver changes based on previously stored data. In addition, when an abnormality occurs in a vehicle, it is possible to use it as a diagnostic tool to notify the smartphone of the problem immediately without having to look at the manual of the vehicle.
Tae Young Yang said, "Radio communication is very important because antennas are easily absorbed by objects made of metal like automobiles. The size and design of the NFC IC is important because the handle of the car door with the antenna for NFC communication needs to be small and the design aspect should be taken into consideration. "
In addition, the car key must be always powered, so do not affect the current consumption. Therefore, the ST chip keeps the minimum power required for communication on, thus preventing energy wastage. When waking up the chip to communicate, it needs to consume less energy. ST supports both capacitive wake-up and inductive wake-up functions.
For example, the ST25R3911B's capacitive wakeup capability of ST's NFC reader IC can detect up to NFC and human proximity while consuming less than 5μA in sleep mode, and inductive wake-up is a low-power mode And senses appropriately.
Yang Tae-young said, "Disadvantages of capacitive wake-ups are waking up too often. That is, the sensitivity is excellent. On the other hand, the inductive wake-up function consumes a little more current. Therefore, ST determines the optimal ratio of the two functions for each product with the car customer. This feature allowed ST's NFC reader ICs to be adopted by automotive OEMs, receiving a score of 10 times better than their competitors in their current consumption. The ST25R3911B has about 5 times better sensitivity than typical devices and can extend its range without adding additional amplifiers with up to 1.4W of output power. "
Another advantage is that in order to amplify the signal from the antenna, the booster must be in front of the antenna. ST's product includes a booster in the NFC chip to save space. In addition, it provides automotive tuning, which protects the antenna components when they are distorted by metal.
NFC IC chip securing safety in the automotive market, unlimited use
NFC brought the advantages that were used in the consumer market, such as e-passport, payment, and hotel key, to the automotive market. The NFC technology used in Automotive has secured stability, which is why it is favorable to expand the product as the demand in the consumer market increases.
Since ST offers MCUs and other products, it has a peak that it can provide a total solution by flattening NFC. ST also supplies the ST25R3911B, an NFC reader IC, and the Discovery kit ST25R3911B-DISCO, which integrates a microcontroller STM32L476RE.
Taeyoung Yang said, "We expect NFC usage to increase in the automotive market in the future. Another wireless communication technology, Bluetooth low energy (BLE), is a disadvantage in security that coverage is wider than NFC. NFC, on the other hand, can provide secure security because it operates when the human hand reaches directly. We expect that the security capabilities will be further strengthened by adding fingerprint recognition to NFC in the future. "
In addition, the audio speaker function of most cars now uses a smart phone in conjunction with Bluetooth. Instead, the NFC function of the smartphone's wireless charger in the car will be charged and the user can listen to music through the NFC connection at the same time. In addition, it is anticipated that when NFC IC is installed at the upper end of the charging cable at the charging station of an electric car, that is, the part of the car which is connected to the car, it is possible to confirm the monthly charge at once through communication. The possibility that NFC is applied to various fields of automotive is unlimited.
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