Conserve power on using accelerometers with the help of this app note from Kionix by shutting it down on specific operating duty cycle. Link here (PDF) Kionix tri-axis accelerometers feature a power shutdown capability. Even with their typically low current draw, there are still applications that may require even less power consumption. For these applications, […]
Tag Archives: Kionix
App note: Multiplexing Tri-Axis accelerometer outputs
App note from Kionix on reading multiple accelerometer by a single ADC using off the shelf chip or accelerometer built-in multiplexer. Link here (PDF) A Kionix tri-axis accelerometer with analog outputs provides three output voltages (Xout,Yout, Zout) which are proportional to the respective accelerations in those directions. However, with three analog outputs to digitize, it […]
App note: Input for magnetometer placement simulations
App note from Kionix on things to look for and placement evaluation before placing magnetometer on PCBs. Link here (PDF) Simulations of the magnetic field environment to provide magnetometer part placement recommendations need considerable technical information to assist the process. Magneto-static and magnetic noise information of the materials and magnetic field sources need to be […]
App note: Handheld electronic compass applications using a Kionix MEMS Tri-Axis accelerometer
App note from Kionix on the how to’s of handheld compass, diving into Earth’s magnetic basics, plots and equations. Link here (PDF) Today’s world is about mobility. The expanded and growing availability of cell phones, PDA’s and GPS has resulted in a massive integration of features into handheld devices. Growing in popularity, the integrated electronic […]
App note: Tilt-Sensing with Kionix MEMS accelerometers
Kionix low-g acceloreometers used as tilt-sensor. Link here (PDF) Accelerometers have countless potential tilt-sense applications in today’s motion-enabled world. Tilt-sensing opportunities exist in a variety of industries, such as automotive, consumer electronics and military/aerospace, and include: • Vehicle stability systems • Inclinometers • Cell phone/PDA screen navigation • Motion-enabled game play • Tilt-enabled computer mouse/pointer […]
App note: Introduction to advanced data path
Kionix’ introduces their Advance data path capability on their tri-axial accelerometers. Link here (PDF) The ADP is a combination of user tailorable frequency filters and a root mean square (RMS) calculator that provides the amplitude of acceleration within a desired bandwidth.
App note: Orientations and Rotations
App note from Kionix on the introduction of most common method in determining orientation and rotations in an accelerometer. Link here (PDF) The fact that accelerometers are sensitive to the gravitational force on the device allows them to be used to determine the attitude of the sensor with respect to the reference gravitational vector. This […]
App note: Magnetometer placement in mobile devices
App note from Kionix about magnetometer integration challenges from the mobile equipment point of view, and gives guidelines for the mounting position of the magnetic sensor. Link here (PDF) Electronic devices contain many parts which can affect a magnetic sensor. When deciding the mounting position, it is necessary to consider the types of materials and […]
App note: Using two tri-axis accelerometers for rotational measurements
App note from Kionix on utilizing 2 linear accelerometers to determine angular rotational rates. Link here (PDF) In many applications, customers would like to measure rotational motions (angular velocity, angular acceleration) in addition to linear motions. Most often, gyroscopes are added to their end product to obtain the rotational information. In some instances, customers already […]
App note: Magnetometer placement in mobile devices
Correct magnetometer placement app note from Kionix. Link here (PDF) Electronic devices contain many parts which can affect a magnetic sensor. When deciding the mounting position, it is necessary to consider the types of materials and the amount of current carried in proximity of the magnetic sensor. Accuracy of an electronic compass depends upon getting […]
App note: Free-fall sensing for drop-force modeling using a Kionix MEMS tri-axis accelerometer
Here’s another app note (PDF) from Kionix on their tri-axis accelerometer applications. An earlier set-up was used in the application note’s experiment. This application note describes how to use a Kionix MEMS tri-axis accelerometer as a free-fall sensor for drop force modeling applications. Required theory, equations, and sample event signatures are provided with this note […]
App note: Interfacing the KXP94 or KXR94 tri-axis accelerometer with the Texas Instruments MSP430F149 microprocessor to measure tilt and other motions
Capture motions with Kionix’ Tri-Axis Accelerometers and a TI’s MSP430F149. App note here (PDF) Kionix linear accelerometers function on the principle of differential capacitance. Acceleration causes displacement of a silicon structure resulting in a change in capacitance. A signal-conditioning CMOS technology ASIC detects and transforms changes in capacitance into an analog output voltage which is […]
App note: Accelerometer Errors
Temperature dependence, Sensor bias, Ratiometric error due to supply voltage variation and etc. These are some of the errors made by accelerometers, here’s an app note from Kionix to help you deal with it. Although everyone would like them to be, sensors are not perfect. Understanding the accelerometer’s errors is just as important as understanding […]
App note: Warranty Protection Using a Kionix MEMS Tri- Axis Accelerometer
Shock and vibration detection as part of product warranty protection, these sensors can be part of any drop sensitive devices i.e. Hard disk drives to record shock instances for warranty claims. Here’s an interesting app note (PDF) from Kionix. This application note describes how to use a Kionix MEMS tri-axis accelerometer as part of a […]