Sensors Expo 2019
June 5, 2019
Sensor solutions for all industries
- June 26 to 27, 2019 (expo)
- Wednesday: 10:00 to 18:00
Thursday: 10:00 to 16:00
- McEnery Convention Center, 150 West San Carlos Street, San Jose, CA, USA
- Stand 416
Welcome to Sensors Expo 2019! We are presenting Chirp, EPCOS, InvenSense, Micronas, TDK and Tronics solutions for a comprehensive spectrum of applications. The focus is on pressure, temperature, Hall, and inertial sensors for all industries. We're looking forward to your visit!
NTC sensor elements for temperature measurement up to 650 °C
The EPCOS NTC sensor element designed for measuring temperatures up to 650 °C is based on a high-temperature ceramic sensor element that is connected to a metallized aluminum oxide rod and then glass-encapsulated. The sensor element offers high-precision measurement with a temperature tolerance of about ±1 K at 200 °C. The component obtains its particular ruggedness from the glass encapsulation. The sensor is available optionally with wires welded to the aluminum-oxide rod. The component is 16 mm long and the glass encapsulation has a diameter of 2 mm.
The high-temperature sensor is qualified to AEC-Q200 and designed for use in especially demanding automotive electronics applications, for example, in exhaust gas recirculation systems. These are used mainly on diesel engines to reduce excess oxygen in the combustion gas and thereby minimize the formation of nitrogen oxides at high combustion temperatures. In the recirculation systems the NTC sensors measure the temperature of the exhaust gas and thus help to protect the engine against overheating – in particular, the cylinder head and valve seats.
In e-mobility applications the new sensors are able to monitor the temperature of fuel cells that are used in electric vehicle drive systems for the direct generation of electrical energy from hydrogen. Applications can also be found in household appliances, for example in self-cleaning ovens that operate on the pyrolytic principle. These work by heating the oven interior to a temperature of about 500 °C which breaks down the long-chain molecules of the food residues and reduces them largely to gas and ash. The necessary temperature is regulated and stabilized by the NTC sensors.
Miniaturized MEMS accelerometer with excellent linearity
The Tronics AXO215 high-performance MEMS accelerometer sets the benchmark in terms of miniaturization, reliability and inertial sensing performance in harsh environments. The new closed-loop accelerometer complements the lineup of TRONICS GYPRO® sensors. The new accelerometer delivers superior acceleration sensing performance for very demanding applications, such as precision instrumentation, unmanned vehicles and avionics.
The AXO215 MEMS accelerometer combines all key benefits on a single chip in terms of size, weight, power and performance. The closed-loop configuration offers excellent non-linearity that is less than 0.05 %. Additionally, the hermetic J-lead package (12 mm x 12 mm) ensures reliable performance levels in harsh environments, while decoupling the mechanical stresses from the host system. Providing an in-plane linear acceleration measurement, the AXO215 has an input range of 15 g with ultra-low noise of 15 µg/√Hz. The 24-bit digital output is delivered with an excellent bias instability of just 3 µg and an operating vibration resistance of 7.3 grms. The new accelerometer sets the benchmark in terms of size, with a footprint much smaller than non-MEMS devices currently used in the targeted applications. Moreover, the AXO215 offers higher performance levels than current MEMS-based solutions, especially in terms of linearity and reliability in harsh environments. The AXO215 MEMS accelerometer is also available in an evaluation version that is specifically designed to provide users and developers with improved testing functionalities.
3D position Hall sensors with unique stray field compensation
The Micronas position sensor portfolio has been expanded with the Hall-sensor family HAL® 39xy. These sensors feature stray-field compensation capability built on the highly flexible architecture for multidimensional magnetic-field measurements marketed under the trademark masterHAL®. The sensors meet today's and tomorrow's automotive and industrial market needs and offer four different measurement modes in a single device: Linear position detection, rotary 360° angle detection and rotary 180° angle detection with stray field compensation including gradient fields as well as the capability for real 3D magnetic field measurement (BX, BY, BZ).
The heart of the HAL 39xy sensors is the patented 3D HAL® pixel cell technology. It helps not only to measure magnetic fields very accurately, but it is also insensitive to stray fields. The unique concept is based on an array of Hall plates. Each measurement mode uses a different combination of them to enable best performance in each mode. The highly flexible sensor array of the masterHAL® sensor line helps design engineers to select the best operation mode for any given measurement task. The HAL 39xy is the only solution available on the market that integrates all four modes in a single device. This offers a clear benefit to customers: They only have to qualify one device instead of various different hardware versions. The new sensors are ideal for a wide range of applications, including all kind of valves and actuators, selectors and gear shifters, pedal-position detection, position detection in transmission systems, steering-angle detection, or chassis-position detection. Thanks to its flexible architecture, the HAL 39xy sensor family offers a wide range of configuration possibilities. It features a powerful DSP and an embedded microcontroller.
TMR angle sensors for highest precision and reliability
TDK TMR sensors can be used in systems that meet the requirements of ASIL-D (Automotive Safety Integrity Level D, the highest safety requirements) according to the ISO 26262:2011 standard. They are can be used up to therefore suitable for such safety-related applications as electric assisted steering and braking. A further outstanding feature of the TMR sensors is their high angle precision, which is adjustable. Depending on the magnetic field strength, residual angle errors of less than 0.2 degrees can be achieved over the vehicle service life (17 years) and a temperature range (-40°C to 175°C). The current TDK TMR sensor product range covers simple angle sensors, rotational speed sensors and linear sensors for power steering systems, wipers, clutch and gearbox positioners, pedals and throttle valves and many other applications.