How do you view the role of automotive network applications in the global automotive market? In the development of automotive networks, what difficulties does this industry face? What are the key market trends?
The automotive network is a growth area in the electronics market. At the same time, it is also an increasingly important factor that consumers consider when buying a car. Previously, this was just the area where high-end models were involved. And now, in-vehicle networks and functions are popularizing, and even applied to low-end models. This expansion of functionality has led to a focus on optimization of component and system performance, and this optimization is within the price range that manufacturers can accept. This also means that this optimization takes into account the double standards of broad acceptance and scalability.
So far, a major issue related to "vehicle networks" is the change in standards. Some manufacturers adopt or recommend certain protocols, while some manufacturers prefer other methods. Ethernet, this powerful solution has been tried for many years in residential and commercial networks. In the automotive industry, Ethernet has gradually become the preferred interface for on-board automatic diagnostic systems (OBD). Since 2008, many models have adopted Ethernet. Ethernet is scalable and can provide higher bandwidth speeds than traditional automotive buses, thereby reducing software download time from hours in the traditional way to minutes in the present.
As the use of standardized IP diagnostic interfaces expands, the use of Ethernet will also expand. As specified in the ISO 13400 standard, Ethernet is used as the physical layer. The next generation of infotainment and driver assistance systems (ADAS) will also continue the application of Ethernet in the automotive market. However, the requirements of these latest Ethernet-based applications are significantly different from the currently deployed in-vehicle diagnostic systems in two ways:
First of all, these applications need to run while the car is driving, so the Ethernet system needs to meet the electromagnetic interference (EMI) requirements of the car manufacturer.
Second, these applications must be real-time.
Since Ethernet must be able to support the operation of all applications while the car is running, it must fully comply with the electromagnetic interference specifications of the car manufacturer. The use of shielded cables can reduce the radiation in the car, but it is not very popular because its production cost is high and very complicated. Therefore, our ultimate goal is to use unshielded cables to support the operation of standard Ethernet, and also to meet the electromagnetic interference requirements of car manufacturers. However, according to the traditional concept of the industry, this is impossible. Recent research by Mindray Company proves that this view is wrong. As shown in the Nikkei AutomoTIve Tech Day issued in Japan on September 4, 2012, and the press release jointly organized by Micrel and Marvell on September 12, 2012 Called.
The scheme promoted by Mindray Corporation and Content Co., Ltd. was successfully demonstrated, and realized the interoperability between the Mindray Corporation and Content Co., Ltd. system, and other IEEE 802.3 Ethernet physical layers. These PHY (Physical Layer) are based on standard. . Through this solution, the cost of cables has been greatly reduced. While maintaining interoperability with all other standard Ethernet equipment, cost reductions of up to 80% compared to shielded cables
What motivated Mindray and Content to jointly develop an interoperable Ethernet PHY based on the IEEE 802.3 standard for in-vehicle networks?
The PHY solutions developed by Mindray and Content Inc. for this interoperability are completely independently developed without any cooperation. This is a key advantage of using open standards (IEEE802.3). Our mutual customers require us to prove our interoperability-which is exactly what we have done.
A basic premise of our strategy to develop standard automotive Ethernet solutions is to realize all the advantages of Ethernet (ecosystems, multi-vendors, interoperable solutions, production scale, etc.) in the car, which is also what car manufacturers want to Reasons for embedding Ethernet solutions (unlike proprietary solutions such as SMSC's MOST and Broadcom's BroadR-Reach) in the car.
We are not an official partner. In fact, we are still competitors! We just showed the standard Ethernet solution to the automotive market. Because they are based on the IEEE802.3 standards, they should be interoperable, and indeed interoperable.
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