Enhance Driver Safety and Comfort with Our Single-Chip HOD Solution
Today's drivers benefit from Advanced Driver-Assistance Systems (ADAS) and, although these systems improve the driving experience greatly, most cars are not yet capable of full autonomous driving on all roads at all times. As a result, ensuring that the driver's hands always remain on the wheel is crucial for safety. Hands-Off Detection (HOD) systems are mandated in many countries for any car with a driver assistance system. Our single-chip HOD solution is a cost-effective implementation of this technology that takes heating into account while utilizing low-cost sensors.
Key Advantages
- Single-MCU solution for signal acquisition and post processing
- Support for all sensor topologies
- Support for HOD and heating
- Support for multi-zone HOD
Modern Steering Wheels
In addition to the main functionality, a modern steering wheel can offer a wide range of interactivity, control, comfort and safety for the driver through features such as:
- HOD (in multiple zones)
- Heating
- Touch buttons
We offer a single-chip solution to execute these features with post-processing resources such as an HOD library and diagnostics. Our complete, low-cost, ready-to-validate solution is ready to minimize your time to market while also keeping board space low.
Multi-Zone HOD
With multiple HOD zones, you can tell whether a driver is gripping the wheel or just barely touching it. All our HOD solutions support multi-zone HOD with just a single chip, meaning costs won’t increase if your number of HOD zones increases.
We can support the use of one heating element for the wheel with multiple HOD zones at the same time. Our solution packages are flexible, configurable and contain multiple zone examples and references.
HOD and Heating Sensor Implementations
Depending on the type of car, steering wheels will have different features. Typically, you need multiple types of sensors or suppliers to implement these different features. However, we offer a single-chip solution that allows you to combine many different types of features to drive costs down.
Design Resources
HOD and Heating Solution Package
Although HOD is newer, heated steering wheels have existed for several decades. Combining the two features leads to very diverse implementations. As our graphic illustrates, we have both stacked and coplanar sensor topologies. Utilizing a single supplier with a unified approach can reduce layer count and drive costs down.
We offer modular evaluation kits to get your development started quickly. Our reference designs cover up to four HOD zones and are available for all HOD-enabled MCU families.
Single-Element Heating and Sensing Solution Package
Keeping costs low is the key to success. Heated steering wheels will require a heating element—but what if you could add HOD to your heated steering wheel without any additional investment?
Our single-element heating and sensor solution package enables this functionality: a single wire for heating becomes a dual-use item by combining heating and sensing. Our dedicated evaluation kit.
HOD Library
Our solution packages include our feature-rich HOD post-processing library, which can track how temperature and humidity affect sensor capacitance and correctly report if the driver is using individual or multiple fingers or one or two hands on the steering wheel. It enables complex user interactions, including changing the temperature of the steering wheel, that are not possible with an individual touch controller.
The library also contains a complete set of sensor and touch hardware diagnostics. If your sensor topology changes from project to project, you can reuse the tuning and software implementations, which saves you time and effort.
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| VSC8540RT IBIS Model - CQFP68 | Product Documents | Download | ||
| SST38LF6401RT IBIS Model - CDFP48 | Product Documents | Download | ||
| SAMRH71F20-EK Schematics | Product Documents | Download | ||
| IBIS MODEL - SST26LF064RT - SM | Product Documents | Download | ||
| VSC8540RT IBIS Model - VQFN68 | Product Documents | Download | ||
| SAMRH71F20-EK - Altium Project | Product Documents | Download | ||
| SAMRH71F20C Schematic Symbol | Product Documents | Download | ||
| SAMRH71F20C Footprint | Product Documents | Download | ||
| IBIS MODEL - SST26LF064RT - HHB | Product Documents | Download | ||
| SAMRH707F18-EK - Altium Project | Product Documents | Download | ||
| SST38LF6401RT IBIS Model - TSOP48 | Product Documents | Download | ||
| SAMRH71F20 Evaluation Kit Schematics | Product Documents | Download | ||
| SAMRH71F20-EK - Altium Project | Product Documents | Download | ||
| SAMRH71F20 TFBGA625 Footprint | Product Documents | Download | ||
| SAMRH71F20 TFBGA625 Schematic Symbol | Product Documents | Download | ||
| VSC8574RT IBIS Model - CQFP256 | Product Documents | Download | ||
| VSC8574RT IBIS Model - PBGA256 | Product Documents | Download | ||
| VSC8541RT IBIS Model - CQFP68 | Product Documents | Download | ||
| VSC8541RT IBIS Model - VQFN68 | Product Documents | Download | ||
| SAMRH707F18 CQFP164 Footprint | Product Documents | Download | ||
| SAMRH707F18 CQFP164 Schematic Symbol | Product Documents | Download | ||
| SAMRH707-EK | Product Documents | Download | ||
| SAMRH707-EK_V2 | Product Documents | Download | ||
| SAMRH707F18-EK - Altium Project - V2 | Product Documents | Download | ||
| SST38LF6401ET IBIS Model - TSOP48 | Product Documents | Download | ||
| VSC8541ET IBIS Model - VQFN68 | Product Documents | Download | ||
| VSC8540ET IBIS Model - VQFN68 | Product Documents | Download | ||
| SAMV71Q21RT CQFP144 IBIS | Product Documents | Download | ||
| SAMRH71F20E IBIS Models | Product Documents | Download | ||
| SAMRH707F18C IBIS Models | Product Documents | Download | ||
| SAMRH707 TFBGA EK AltiumProject | Product Documents | Download | ||
| SAMRH707F18 TFBGA Evaluation Kit Schematics | Product Documents | Download | ||
| SAMRH707F18 TFBGA Symbol | Product Documents | Download | ||
| SAMRH707F18 TFBGA Footprint | Product Documents | Download | ||
| SAMRH71F20 TFBGA625 EK Schematics | Product Documents | Download | ||
| SAMRH71F20 TFBGA625 EK Altium Project | Product Documents | Download |
HOD-Enabled MCUs
Browse these families of HOD-enabled MCU. Contact us to inquire about adding HOD functionality to a family of MCUs that is not on this list.