(Honda performance parts) Today’s Automotive Engineer: A Technology Guru with Connectivity Solutions
No commentsBy Mike Trudel
Technology gurus are hiding in a variety of places these days. Say, for instance, the automotive industry.
The automotive industry has produced some of the most advanced and user-friendly technologies publicly marketed in recent years. We can now not only operate our cars without keys, but we can also map our next trip, download information from our desktops onto a “carputer,” assess the state of the vehicle, watch movies, arm a security system inside and out and be alerted when others are in our blind spots.
Take, for instance, an entry-level map-based integrated navigation radio, which uses a flash-based secure digital card color map database to provide high-performance navigation. A single, state-of-the-art navigation kernel and map data compiler used in the European market help shorten Original Equipment (OE) innovation cycles, and a range of options allows for entertainment and ease-of-use features. Integrated into a single unit, a map navigation system can be used in parallel to the audio system.
Such a system can include AM/FM radio, navigation tools, playback mechanisms like compact discs and MP3s, and connectivity options for portable electronic devices. Of course, customers can add nearly anything a techy heart could desire, like a digital tuner, USB, touch-screen interface, voice recognition, steering wheel control and audio codec options.
And that’s just the basic model. Touch-screen navigation radios are full-featured audio and navigation systems in one unit, using onboard computers that interact with the Global Positioning System (GPS), vehicle sensors and a DVD-map database. Such personal travel assistants minimize travel time, make travel more convenient and increase peace of mind. Benefits include multiple functions in one compact unit, the ease of a touch screen, voice prompts, entertainment options, state-of-the-art navigation, the ability to remap locations if the driver misses a turn and intersection views for detailed maneuvering guidance.
Active safety systems, like active night vision, lane departure warning systems and infrared side (blind spot) alerts, are other excellent examples of automotive engineers’ ability to connect advanced technologies in a manner that makes the driving experience both safer and more enjoyable.
Active night vision uses near-infrared headlamps to illuminate the road scene ahead and displays an enhanced image in the vehicle. This system provides high-beam visibility without blinding oncoming traffic. Components of the active night vision system can be shared with other safety features, such as a lane departure warning system.
When lane departure warning systems utilize a camera, the camera can also be used for multiple features, such as active night vision, pedestrian recognition, rain sensing and intelligent headlight control. The lane departure warning system uses a monocular camera mounted behind the windshield to track lanes in front of the vehicle. Accompanying software estimates lane width and road curvature, and determines the vehicle’s heading and lateral position within the lane. When the driver strays from his or her own “dotted lines,” an audible, tactile or visual alert is issued. According to an automotive magazine, ninety-five percent of all vehicular accidents involve some degree of driver behavior — such as swerving. Systems like lane departure warning provide hope of reducing the approximately one hundred deaths that occur every day on American roadways, as reported by the Public Broadcasting Service in 1995.
Side (blind spot) alerts provide the same hope. These systems help drivers be aware of vehicles in side blind spots when changing lanes and making turns. Sensors integrated into mirrors, taillights and side fascia measure the adjacent lane temperature over time to detect if vehicles are entering the side blind spot. If detected, the system provides visual indications within the mirrors. If this proves ineffective and a turn signal is activated anyway, an audible alert follows. These warnings give drivers more time to react and, hopefully, help avoid the more than 200,000 lane change accidents that occur every year according to the National Highway Traffic Safety Administration.
It’s amazing how easily they hide those geniuses of technology. We never hear their names, see their faces, or even, in most cases, acknowledge they exist. Yet it is the knowledge, safety and connectivity solutions of automotive engineers that are helping save lives and helping make sure the rest of us don’t get hopelessly lost on the way to that next great adventure — at least not too often.
Mike Trudel, Freelance Writer.
Delphi Corp. is poised to apply its expertise and know-how to provide vehicle manufacturers and consumers with in-vehicle connectivity. To learn more about Delphi Corp., please visit www.Delphi.com/4Connected.
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Active Safety - A Little Help from Your Electronic Friends
By Mike Trudel
It started out simple enough. Historians may argue the chronology, but “Active Safety” likely began with the “horn,” an effective way to alert the guy ahead of you that you might run into him if he doesn’t move. Then someone came up with the idea of something called a “turn signal” to let other drivers know which way you were thinking of going. That led to another great idea, “brake lights” that let the guy behind you know you were slowing down.
Active safety has mushroomed ever since. Much of the safety technology developed over the past 50 years has focused on protecting people in a crash — reacting to an impact with passive safety technology like seat belts and airbags. The future of active safety seeks to help prevent accidents in ways the inventor of the horn never imagined.
One of the most common active safety systems widely used today is anti-lock braking. Anti-lock braking senses impending wheel lock-up and pulses the brakes many times a second — faster than most humans could — allowing drivers to maintain steering control under severe braking conditions. The brake controllers for ABS also enable traction control and dynamic stability systems; the three lie at the heart of most near-term active safety systems.
Among these systems are sensors that monitor the angle of the steering wheel, the front wheels and the vehicle itself; the speed at which each wheel is turning; the engine speed; and, in some cases, how hard the driver is hitting the brakes. The electronic components process this information in milliseconds and take corrective action to assist the driver.
This is where we are today, but the technology that will soon be available to consumers will take active safety to another level. The elements of adaptive cruise control and steer-by-wire will be added, and radar might sense impending collisions and either warn the driver or enable the vehicle to take evasive action itself.
With steer-by-wire and active suspension, the vehicle can correct oversteer or understeer with brakes, the engine, steering and perhaps shocks. This is also referred to as integrated chassis control, which uses not just the brakes but also the steering, engine and other systems within the chassis. In essence, the active suspension system analyzes what the driver is asking the vehicle to do and decides how best to achieve that result. In other words, it would be much harder for a driver to lose control of a vehicle if an active safety system could steer to counteract unwanted turning in a braking maneuver. While the system would take input from the driver’s controls — the steering wheel, brake pedal and accelerator pedal — it could just as easily take commands from outside the vehicle, perhaps from an intelligent highway system.
Suppliers and engineers believe that integrated chassis control could become commonplace in 10 years. The leading edge of this technology is an enhanced handling system called active roll control. The system uses hydraulic input from the steering system to actuate hydraulic cylinders in the front and rear sway bars so they resist leaning when the vehicle turns or follows a curve. Currently, rollover sensors are available to help indicate if a rollover is imminent. The sensor assesses the vehicle’s inclination and in conjunction with other inputs, such as vehicle speed and lateral acceleration, warns of extreme inclination or the potential for vehicle rollover.
Also well along the development cycle is adaptive cruise control, also known as intelligent cruise control or smart cruise control, a system that is already in production. One such system features a single radar unit both mid- and long-range capability. The system’s processor is contained in the same box as the radar, and the entire unit is hidden behind the front grill. The radar looks forward, while the processor interprets the distance to the vehicle ahead. If the car ahead gets too close (a pre-determined limit entered by the driver), the processor sends a command to the engine controller to slow the engine; and if that’s not enough, it sends a command to apply the brakes.
Collision avoidance systems may evolve from adaptive cruise control by adding short-range radar to the front and side. This would work in tandem with a panic brake-assist system currently available. This system measures master-cylinder pressure; if it detects a very rapid application of the brake pedal, it uses the motor pumps from the traction control or dynamic stability control system to build brake pressure at the wheels faster than the driver could manage alone.
Automotive suppliers are looking not only at radar, laser and infrared for collision warning and collision avoidance systems, but also at optical systems - cameras which collect data that is interpreted by a computer rather than driver-displayed. Both optical sensors and angular-rate sensors determine whether there’s an obstacle in a vehicle’s path. That’s the easy part. The challenge becomes understanding the vehicle’s intended path, particularly when that path involves a curve in the road. Once the system recognizes that the vehicle is going around a curve, it would be able to determine whether an object is actually in the vehicle’s path. An intelligent system that can tell the road is curving will know that a car that looks like it’s directly in front is really in another lane.
Increasingly sophisticated advances in active safety will continue to blossom over the next decade, including stop-and-go cruise control, pre-crash sensing, forward collision warning, side and rear blind spot detection and lane change warnings. The more pieces of active safety that are fitted together, the closer the industry comes to being able to turn over control of a car to an on-board or off-board computer in emergency situations, on “smart” high-speed lanes of crowded highways or perhaps even full time during regular driving conditions. Of course, that much automated control could eventually become a “hot potato.” The concern is likely to be whether drivers and buyers are ready for it. The fact is, automakers aren’t going to spring entire active safety systems on the public all at once. As is already the case, the ingredients will be added gradually, piece by piece.
Mike Trudel, Freelance Writer.
Delphi Corp. is a leading innovator of automobile safety equipment and technology. To learn about Delphi’s safety advancements, visit www.Delphi.com/4safe.
Saturday, November 22nd, 2008 at 7:20 am and is filed under automotive. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
