Light Weight: Weighing in at only 30
grams, the SmarTire sensor uses a lightweight Dupont polymer containing
only 13 to 15 percent glass fiber by weight. Other plastics have a glass
content of up to 35 percent.
Relax and drive. You no longer have to step out of the car to check if your
tires are properly inflated. SmarTire has just introduced a new low-cost tire
sensor weighing only 30 gm. Being lightweight is an asset to parts inside a tire
that have to survive heavy spinloads produced by centrifugal forces up to 3,000
times gravity. What's more, lightweight sensors do not affect the balance of the
wheel or the handling of the vehicle.
The secret to the sensor's light weight is a Dupont polymer containing only 13 to 15 percent glass fiber by weight. Glass fibers make a part heavier because they have more than double the specific gravity of typical engineering plastics. They can also interfere with the RF signals the sensor uses to transmit data from inside the tire. DuPont Zytel HTN54G15HSL is used for the sensor's support cradle and housing body component. The housing body's cover is molded from Zytel 71G13HS1L nylon.
The SmarTire system consists of two parts: a wireless sensor/transmitter that mounts inside each of the tires via a stainless steel strap that goes around the wheel rim and a receiver/LCD unit that goes in the vehicle. The sensor monitors the air temperature and pressure continuously. When the vehicle starts rolling, a centrifugal switch activates the sensor, which wirelessly transmits the initial tire information to the receiver inside the vehicle. The sensor reads the data every 12 sec and transmits the tire pressure and temperature nominally every 4 min. If the tire pressure increases or decreases by 3 psi, the sensor transmits the significant change immediately. When tire pressure gets too low or tire temperature gets too high, a bright red LED light and an audible alert gets activated.
Based in British Columbia, Canada, SmarTire supplies tire pressure monitoring systems for passenger cars, motorcycles, and recreational vehicles.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
Robots that walk have come a long way from simple barebones walking machines or pairs of legs without an upper body and head. Much of the research these days focuses on making more humanoid robots. But they are not all created equal.
The IEEE Computer Society has named the top 10 trends for 2014. You can expect the convergence of cloud computing and mobile devices, advances in health care data and devices, as well as privacy issues in social media to make the headlines. And 3D printing came out of nowhere to make a big splash.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.