HMI stands for Human-Machine Interface and refers to the point of interaction between a human and a device – or a vehicle, in the case of Automotive. An automotive HMI includes displays and controls that allow drivers to operate and monitor their cars more precisely.
The rise of mobile devices in daily life has led to a demand for seamless integration with automotive HMIs. This would offer more opportunities to enhance user experience, safety, and convenience.
However, integrating a mobile device with an HMI system requires following some best practices.
Best practices for integrating mobile devices into automotive HMI design
Consider safety and possible distractions
Automotive designers must consider safety regulations and possible distractions as their first priority. Since regulations limit the use of mobile devices while driving, you must prioritise hands-free and voice-activated controls while minimising non-critical information.
Furthermore, you need to consider industry-specific security protocols to ensure that the interfaces are functional and safe for both drivers and passengers. It’s best to work alongside experts, e.g. a custom automotive HMI development company, who are well acquainted with such specifications.
Incorporate various controls
Voice and gesture recognition technology can provide a more natural and intuitive way for drivers to interact with their vehicles. Such controls can be used to do all sorts of things with minimal distraction. For example, drivers can quickly adjust the temperature or change the radio station without taking their eyes off the road at all.
Ensure compatibility with existing HMI systems
You need to ensure that the device and its software is fully compatible with modern HMI systems. To do so, you need to carry out extensive testing of various functions, such as audio playback, navigation, and phone calls.
Follow general compatibility standards (e.g. MirrorLink, Apple CarPlay, and Android Auto) and hardware requirements (Bluetooth connectivity, USB port compatibility). And of course, supply consistent software updates to make the compatibility last.
The usage of advanced sensors and data analytics can provide a more personalised experience when integrating mobile devices with automotive HMI. Cameras and GPS can give insight into the user’s driving behaviour and preferences, allowing for custom recommendations and suggestions.
For example, the HMI system could adjust the temperature or music playlist based on the driver’s previous preferences or suggest nearby restaurants or gas stations based on their location. Additionally, data analytics can be used to identify areas for improvement in the HMI design, ensuring that the system is optimised for the user’s needs.
Examples of successful mobile integration in automotive HMI design
Tesla’s Model S and Model X
Tesla’s Model S and Model X are excellent examples of successful mobile device integration in HMI design. The vehicles have large touchscreens that are very similar to tablets, which provide an intuitive interface for drivers and passengers to control various functions, including navigation, music playback, and climate control. They also allow drivers to seamlessly access their smartphone’s apps and features.
Apple CarPlay and Android Auto
Apple CarPlay and Android Auto are other popular examples of successful mobile device integration. These systems allow drivers to connect their smartphones to their vehicle’s infotainment system and access music, maps, phone calls, etc. The interfaces are designed to resemble the user’s smartphone, which makes them very intuitive.
Ford’s SYNC 3
Much like Apple CarPlay and Android Auto, Ford’s SYNC 3 lets drivers connect their mobile phone to the Ford infotainment system. The system embraces a simple and clean design, with large icons and a straightforward layout. What makes SYNC 3 unique is the integrated advanced sensors and cameras, which provide lane departure warnings, forward collision warnings, and adaptive cruise control, enhancing safety on the road.
There are a number of drawbacks developers need to consider when integrating mobile devices into automotive HMI design.
- Security and privacy concerns. With sensitive personal data being transmitted and stored on these devices, there is a risk of data breaches, hacking, and cyberattacks.
- Distraction and potential safety hazards. The use of mobile devices while driving can divert a driver’s attention from the road, increasing the risk of accidents.
- Technical limitations and compatibility issues. Different mobile devices have different hardware, software, and connectivity requirements, which may not always be compatible with existing vehicle systems.
- User experience challenges and learning curves. Drivers and passengers may be accustomed to using their mobile devices in a particular way and may find it challenging to adapt to new interfaces and systems.
That said, proper research and experienced professionals will help you deal with these challenges fairly easily. It all comes down to proper testing and following industry-proven design practices.
To sum up, there are four major principles you need to follow when designing mobile device integrations with automotive HMIs.
- Put safety first. Follow industry standards in data security, intuitive design, and minimal distractions.
- Provide alternative controls. Voice and gesture controls are great for keeping the driver’s eyes on the road at all times.
- Ensure compatibility across different HMI systems and mobile devices with testing, industry standards, and regular updates.
- Personalise driving experiences. Utilise sensors and smartphone data to create customised recommendations based on each driver’s preferences.
If you follow these best practices, you can be certain your drivers will enjoy a more intuitive, convenient, and safe experience on the road.