NFC is an abbreviation of NearFieldCommunication in English and is short for Near Field Wireless Communication Technology. NFC technology evolved from radio frequency identification (RFID) technology, which was jointly developed by Philips Semiconductors (now NXP Semiconductors) and Sony Corporation in 2002. NFC technology is a short-range radio technology that operates in the 13.56 MHz frequency range with a communication distance close to 10 cm, so it is called incoming communication. NFC technology promotes standardization under the framework of ISO/IEC18092 standard, EMCA-340 standard and ETSITS102190 standard, and is also compatible with widely used ISO14443Type-A/Type-B and Felica standard contactless smart cards.
In the early days of NFC technology, it was first applied to contactless smart cards, smart card reader terminals, and device-to-device data transmission links. The main applications include access control and ticket checking systems, smart wallet cards that support payment, and mobile card and NFC devices. Exchange and so on. With the promotion of this technology, since Nokia launched the first mobile phone with built-in NFC function in 2007, various brands and models of mobile phones began to support NFC. Google's Android system has supported NFC technology in version 2.3, and has gradually added more feature support in subsequent versions. Some Android system phones have gradually supported NFC functions since then. Especially since 2010, in the wave of mobile Internet brought by mobile terminals such as smart phones, NFC technology has been greatly promoted along with the rapid spread of Android systems. NFC technology is gradually applied to more life-oriented service areas, such as NFC tags for specific applications, to better meet the growing convenience needs of the people.
The mobile phone began to support NFC technology, providing a necessary soil for its application in the car. This article will mainly introduce the application of NFC technology in the field of automotive electronics.
Car anti-theft system is one of the main applications of current NFC technology in the field of automotive electronics. The car keyless entry and start system (PEPS) integrates the NFC function, which can improve the convenience and comfort of the user's car while ensuring the anti-theft security of the vehicle. This is mainly reflected in the following aspects.
First, the NFC technology is used to query the vehicle status. After integrating the NFC-enabled smart key, the automotive PEPS system writes vehicle status information to the smart key via the RF signal. Through the contact of the smart key with the mobile phone, the mobile phone screen can conveniently display the vehicle status, the door and window status, the remaining oil amount, and the temperature information inside the vehicle. Even after the user leaves the vehicle, the information stored in the key can be viewed to facilitate the user to understand the state of the vehicle and enhance comfort.
At the same time, the NFC technology can be used to implement the car search function. After the car obtains the latest geographical location in the navigation system, the geographic location information is written to the smart key for storage through the PEPS system. The user uses the mobile phone to query the location information of the vehicle. If the map software on the mobile phone is used, even in a large parking lot, the car can be easily found, eliminating the trouble of searching for a car.
Third, the NFC technology can be used to implement the route planning function of the car. When we plan the travel route on other devices, we store the information in the smart key through NFC technology. When the user enters the vehicle, the PEPS system can timely acquire and provide the planned route to the navigation system, and automatically help the user to load navigation information, which is convenient for the user to travel.
Fourth, the use of NFC technology can achieve the acquisition of vehicle fault information, facilitating vehicle maintenance and maintenance. When a specific fault occurs in the car, PEPS acquires the information via the CAN bus and stores the information in the smart key. By reading the information through an NFC terminal such as a mobile phone, the user can obtain the fault information of the vehicle in time and reasonably select the maintenance method and maintenance strategy.
Fifth, the use of NFC technology can achieve more convenient entertainment features. The user can also use the NFC terminal to store the selected music information into the smart key. After the user enters the vehicle, PEPS obtains the information and sends it to the infotainment system, which can directly realize the music playing and recommendation functions. Seamless migration of user entertainment.
In addition, it has been reported that the BMW car has successfully opened the door of the hotel that the user has booked through the NFC-enabled smart key. The implementation method and process of this function are more complicated. In addition to using NFC technology, it is also applied to LBS services, etc., and the entire solution needs to be profitable in combination with a specific business model. Although NFC technology is only a small part of the entire system, the application prospects of NFC technology can be seen, and the future application potential is generally optimistic.
In the development of NFC technology, the comparison with Bluetooth technology is particularly worthy of attention. Since Bluetooth technology is a close-range wireless communication method, and Bluetooth technology has undergone multiple versions and applications, NFC technology has always been the most concerned issue. However, in fact, as a payment transaction mechanism for mass consumers, NFC technology has the advantages of being less easy to monitor and more secure due to its shorter communication distance, and is suitable for exchanging financial transaction information and sensitivity with higher security level. More personal information such as personally identifiable information. The Bluetooth technology is suitable for applications with relatively long communication distances, and also makes up for the shortcomings of NFC technology in communication distance. Therefore, from the current situation, NFC and Bluetooth technology will continue to play a role in their respective fields, complement each other and promote. In fact, the NFC protocol already supports the pairing of Bluetooth devices and also promotes the promotion of Bluetooth technology.
There is no doubt that NFC technology is being applied in more and more fields. Especially in the context of the development of mobile payment by mobile network operators in mainland China, from the maturity of technology to policy support, NFC technology seems to occupy the right place. Today, when the concept of Internet of Things (IOT) is prevalent and insufficiency, NFC technology provides a reliable channel to turn ideas into reality, and future development is worth looking forward to.
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