Da Lian Da Holdings, an international leading semiconductor component distributor dedicated to the Asia Pacific market, announced that its subsidiary Pinka has launched a HoD off hand detection and touch multifunctional steering wheel solution based on Microchip AVR DA MCU.

Figure 1- Display board diagram of Da Lian Da Pin Jia's HoD off hand detection and touch multifunctional steering wheel solution based on Microchip products

In recent years, steering wheel off hand detection has received widespread attention as an advanced active safety assisted driving technology. It can monitor the contact status between the driver's hands and the steering wheel in real time. Once dangerous driving behavior occurs, it will trigger corresponding safety measures to improve driving safety. At present, there are two mainstream HoD detection solutions on the market: steering torque detection and capacitive touch detection. Among them, the cost of steering torque detection is low but not accurate enough, while capacitive touch detection is precise but difficult to design. In response to this issue, Da Lian Da Pin Jia has launched a HoD off hand detection and touch multifunctional steering wheel solution based on Microchip AVR DA MCU. This not only achieves accurate off hand detection, but also integrates modules such as touchpad, buttons, slider, and roller, reducing design costs while maintaining detection accuracy.

Figure 2- Scene application diagram of the HoD off hand detection and touch multifunctional steering wheel solution based on Microchip products by Dalian Pinjia

AVR DA MCU is a low-power performance product under Microchip. It can provide real-time control function and simple capacitive touch function. In terms of design, this MCU combines Core Independent Peripheral (CIP) with powerful intelligent simulation products, which can not only serve as an independent processor, but also as a supporting MCU that requires high-precision design. The AVR DA series has a high memory density, making it very suitable for wired and wireless communication stack intensive applications.

Figure 3- Block diagram of the HoD off hand detection and touch multifunctional steering wheel solution based on Microchip products by Dalian Pinjia

This solution uses a single chip to achieve HoD off hand detection and touch pad, button, slider, and roller control functions, and supports steering wheel heating and glove touch, greatly improving the human-computer interaction experience while reducing system costs.

Core technological advantages:

AVR DA MCU single chip realizes HoD off hand detection+touch pad, buttons, slider, and scroll functions, reducing overall system cost;

Supports three-layer, double-layer, and single-layer sensor structures, supports steering wheel heating, and has a wide range of applications;

Support HoD partition detection, which can determine the position and gesture of human hand grasping;

Touchpad gesture recognition: sliding direction, rotation direction, click/double-click. Rich human-computer interaction experience;

Drive shielding technology can improve capacitance detection performance and support wearing gloves for touch;

Scalable tactile feedback (vibration/sound/flash), ISELED drive;

Low cost and high-performance automotive grade MCU, meeting ISO26262 functional safety requirements;

Implementing LIN communication through external LIN SBC, and extending CAN/CAN-FD communication through SPI external MCP25625 or MCP251863;

Convenient development environment, visualized parameter debugging, comprehensive reference design materials, strong technical support team, and rapid market launch.

Scheme specifications:

Advanced Driving Assistance System (ADAS);

HoD off hand detection;

Touch the multifunctional steering wheel (touch panel, buttons, slider, scroll wheel, gesture recognition).

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Regarding Da Lian Da Holdings:

Da Lian Da Holdings is a global leader and the largest semiconductor component distributor in the Asia Pacific region. Headquartered in Taipei (TSE: 3702), it has approximately 5000 employees including Shiping, Pinjia, Quanding, and Youshang. It has over 250 product suppliers and 78 distribution centers worldwide, with a revenue of 25.97 billion US dollars in 2022. Da Lian Da has established an industry holding platform, focusing on international operational scale and localization flexibility. It has been deeply cultivating the Asia Pacific market for a long time, with the vision of "industry first choice and channel benchmark", and fully promoting the core values of "team, integrity, professionalism, and efficiency". It has won the "Youxiu International Brand Distributor Award" for 23 consecutive years. Faced with new manufacturing trends, Dalian University is committed to transforming into a data-driven enterprise, establishing an online digital platform called "Da Da Wang", and advocating for the intelligent logistics service (LaaS, Logistics as a Service) model to assist customers in facing the challenges of intelligent manufacturing together. Starting from benevolence and building trust through technology, the University of the United Nations hopes to collaborate with the industry to build a competitive ecosystem, and actively promote digital transformation with the sixteen character mindset of "focusing on customers, technology empowerment, collaborative ecology, and co creating the era". Market ranking based on data released by Gartner in March 2023

About The Author

This is reported by Top Components, a leading supplier of electronic components in the semiconductor industry. They are committed to providing customers around the world with the most necessary, outdated, licensed, and hard-to-find parts.

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Name: John Chen

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