The hottest emerging automotive electronics market

The emerging automotive electronics market and related testing priorities

take the entertainment information of automotive systems vs. Bluetooth testing as an example

with the continuous innovation of more smart portable devices, similar technological developments have gradually expanded to the automotive electronics market. In addition to the smart and smart TVs we know, even cars have begun to appear as "smart car". Due to the technological progress of the new generation of SMAR, T car emphasizes that it can bring users (whether drivers or passengers) a more smooth and convenient feeling. Therefore, it pays more attention to the ease of use of human-machine interface in application, and pays more attention to electromechanical integration in technology, so that emerging technologies can be introduced into applications more smoothly, so as to improve our experience in riding and multimedia use. Therefore, automotive electronics has become a product field that has begun to be valued at present

generally speaking, automotive electronics cover a wide range of aspects, such as tire pressure monitoring, electronic stability control, and energy-saving smart grid and electronic car technology; As for the general end consumers, the deepest feeling lies in the infotainment system itself and the information transmission with personal devices. As safety and energy conservation involve a wide range and dispersion, we will only discuss the last one

car entertainment information system and Bluetooth technology application

car entertainment information system has been developed for several years. Many manufacturers such as Ford, Toyota and Kia have also launched their own systems. Ford's "sync" combines communication and entertainment with Microsoft's voice recognition technology to let cars know how to listen and act. In addition, it also supports a variety of storage and music playback devices, such as general USB storage devices and iPhone, At present, it has successfully attracted a lot of attention and laid a solid foundation; The "entune" released by Toyota at CES this year combines the road services of major theme stations such as Bing, Pandora, OpenTable, iHeartRadio, etc., providing passengers with the possibility of road search, radio listening, restaurant reservation and other actions through the system, and even querying the real-time traffic conditions, weather, stock market, oil price and so on. As for the "UVO" recently launched by Kia, it also adopts voice control technology similar to sync to control the voice system under the premise of safe design

these vehicle entertainment information systems usually need to be connected or connected with the user's personal devices. In addition to the detailed verification of the interface compatibility between devices, the most important thing to pay attention to is the frequently used transmission technology: Bluetooth. Not only can Bluetooth specifications be seen everywhere in our daily notebook computers and tablet computers, but today, when Bluetooth technology is gradually spreading, consumers have more and more demand for using Bluetooth device transmission in cars, and most car entertainment information systems also apply Bluetooth technology to a considerable extent. Especially when safety awareness is enhanced and many countries begin to prohibit drivers from answering while driving, hands-free answering through Bluetooth will be a major application direction of Bluetooth in the automotive market. In addition, in addition to using the USB slot to transfer the music files in the portable disc to the car stereo for playback, it is more convenient to stream the audio through Bluetooth. We can instantly listen to each other's music content without using USB or transmission line

with the continuous development of high-speed Bluetooth technology, some vehicle types can also use Bluetooth technology to perform data transmission such as SMS and contact person (such as sync mentioned above), or share data with other Bluetooth devices; It is expected that in the near future, Bluetooth can be used for warning transmission in the vehicle system of safety control and monitoring. When more and more in car communication and surveillance begin to rely on Bluetooth, the functionality and reliability of Bluetooth function on the car body itself and related devices become more important, so it is more necessary to confirm whether it meets the Bluetooth test verification specification

in addition to Bluetooth, which has been widely used in the field of automotive electronics, other communication technologies, including Wi Fi and 4G LTE and WiMAX, also show their determination to work in the electronic field of high-performance modified plastic and plastic wood product systems for multiple utilization fields. These technologies focus on the development of in car and car to car transmission. The former can be applied to the data sharing between different devices in the vehicle Construction of hot spots on the vehicle; The latter can be used in the return of road traffic conditions, accident notification and so on

test case: vehicle entertainment information system vs. Bluetooth

in order to let relevant manufacturers further understand the possible application scenarios of Bluetooth technology in vehicle entertainment information system, PARKnSHOP takes the use scenarios between vehicle systems as an example, Summarize and sort out some of the most basic key points that must be verified for their functionality:

- pairing and connect

if data transmission between Bluetooth devices is to be carried out, pairing between devices must be carried out first, so pairing function can be said to be the first step to verify Bluetooth function. Including the ability to search for other Bluetooth devices after entering the pairing mode, whether the names of other Bluetooth devices can be displayed correctly, gap (generic access profile) support, etc

- contact information transfer (con4 and polysulfone have passed the relevant specifications in the field of American medicine and food, tact information transfer)

in order to enable the driver to answer and dial without holding, the contact information (commonly known as the book) in the car is usually imported into the on-board system, or the on-board system can read the contact information in real time. The key points to be verified include the connection processing ability of sap (SIM access profile) Support of pbap (phone book access profile) and OBEX (object push profile) functions to confirm whether the contact information can be read and updated synchronously

- phone function

the focus of this project is to ensure that the vehicle system can avoid actually performing various functions that were originally handled directly by holding. Therefore, the dialing and answering, three-party or multi-party calls, disconnection and reconnection, voice commands, transfer, rejection, and the quality of audio during calls must be verified one by one

- audio streaming

another frequently used situation is that the user wants to play the music or other audio files stored in the car through the music playback function of the car system. Therefore, it is necessary to ensure that the audio files streamed through Bluetooth perform well. The verification focuses on the functions of the A2DP transmission protocol (advanced audio distribution profile), the functions of play/pause/replay/forward/backward, the ability of audio streaming connection and disconnection reconnection, whether the playback is stable and smooth, and the processing ability of incoming calls in music playback

- overall performance

in addition to the aforementioned functional test to verify the vehicle system and transmission through Bluetooth, another key point is the benchmark test with competitive products. For example, the interoperability of vehicle systems of two different brands for various styles is bound to be different, and they are also likely to have different performance in different temperature and humidity environments, which is also an indicator to confirm the quality of vehicle systems

when various technologies gradually penetrate into the field of automotive electronics, manufacturers should pay more attention to whether the functions of these technologies can play a good role. In addition to some basic entertainment functions such as listening and music playing, some advanced warning functions must also be verified in detail. You can restart or brush the firmware after the crash, but the defects of the vehicle system are not as likely to come back as these consumer products. Once navigation, warning and body safety are involved, any link error may pose a serious threat to the driver and passengers on the vehicle

as a professional testing and experimental institution for various technical standards and diversified electronic products, PARKnSHOP has also developed testing solutions for automotive electronics, including Bluetooth device interoperability and automotive entertainment information systems, such as navigation, digital signal reception, etc. Bluetooth has almost become a must-have technology for developers of all levels of vehicle types at this stage, and the interoperability between many in vehicle devices has introduced the application of Bluetooth, Therefore, detailed verification is the trend of the times. In addition, it can customize and design the most appropriate test plan according to different needs, and provide the most complete and reliable verification direction for automotive interior device manufacturers. At this stage, for the development manufacturers of all levels of vehicle types, it has become a technology and product that this paper only proposes to be verified in detail at this stage from the perspective of consumer use, and takes the use situation of Bluetooth connection as a reference case. We also believe that the transplantation of more new technologies, as long as they can be well and correctly applied and carefully verified, can bring us a more smooth and convenient ride experience