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| Sensor integration: the development of smart phones and tablet PCs |
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| Source£ºBoye International Trade Co., Ltd. Release time£º2017-04-19 |
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The use of 3-axis decelerometer, 3-axis gyroscope and 3-axis magnetic sensor to complete the 9-axis sensor will strengthen the smart phone warboard computer user interface. IHS predicts that demand for 9-axis motion sensor market growth will rise from $ 850 million in 2012 to $ 1.3 billion in 2015.
Today, with the MEMS sensor "blend" of the birth, like the iPhone and iPad consumer electronics such as the movement of perception to the next generation to carry out. A more complex approach is being designed and used, which will advance the basic changes in the onset of the smartphone warboard computer.
"MEMS sensors, which are gyroscopes, decelerometers and magnetic sensors, are becoming ubiquitous in smartphone warboard computers," said J¨¦r¨¦mie Bouchaud, chief analyst at IHS. "While these sensors provide user interface, gaming and navigation capabilities , And has become a necessary function of mobile electronic equipment, but if the use of a single sensor, will be in terms of accuracy and response is perfect.Therefore, to carry out the above functions to a new level, it is necessary to provide smart phone war board The computer has an 'blend signal' that combines the input data of the three motion sensors.
The use of 3-axis decelerometer, 3-axis gyroscope and 3-axis magnetic sensor to complete the 9-axis sensor will strengthen the smart phone warboard computer user interface. IHS predicts that demand for 9-axis motion sensor market growth will rise from $ 850 million in 2012 to $ 1.3 billion in 2015.
Better sensors for better products
Gyroscopes, decelerometers and magnetic sensors provide a variety of motion sensing functions. Then each sensor has its own limitations. For example, with the passage of time, the gyroscope has a larger drift scene; magnetic sensor sensitive to electromagnetic interference; deceleration on the low-speed sensor is better, not suitable for high-speed.
When the three sensor signals are merged together, each sensor function can compensate each other. Compared to the use of a sensor alone, sensor integration is to strengthen the motion perception experience: faster, more fluent, more accurate.
However, the combination of the three victims of the real victim of the performance: the need for 9-axis blend program included in the use of sequential interfaces (API), for software developers.
"With the API's 9-axis sensor integration support, software developers will be able to take advantage of the smartphone warfare computer software, such as immersive games, to respond quickly and accurately," J¨¦r¨¦mie Bouchaud said, "9-axis sensor blend will also be used for indoor navigation."
This will lead to the development of Apple's iOS and Google's Android operating system has made important improvements, both from the hardware or software point of view, the current two pieces are not enough to support 9-axis blend. In iOS, the input signal of the gyroscope is combined with the deceleration signal to provide 6-axis blending. Compared to the iPhone 3GS, although this program to strengthen the iPhone 4 sports sensing function, but compared to 9-axis blend or appear to be lacking. In the Android phone warboard computer has a gyroscope, but only the gyroscope of the original data, and no deceleration signal blending. So the Android store does not have a concern in the use of the use of the gyroscope function.
A more sensible sensor blend architecture
The software algorithm will be embedded in the sensor or running on the tablet and smartphone using the processor. New concept - to complete the product more energy - is also declining.
IHS predicts that in 2012, some handsets will include a common microcontroller that will run the sensor blend algorithm for complex motion handling obligations, and when the more complex calculations are stopped, the processor is used to wake up execution obligations, such as indoors navigation. Initially, the sensor blend can also be run on the common core in the processor.
The sensor supplier provides a 9-axis sensor blend solution
(ST) and InvenSense have opened the 9-axis sensor blend engine, making OEM manufacturers can quickly complete the mobile phone warboard computer movement interface. InvenSense announced in September that its combination of 9-axis sensor-based combined sensors for smartphone warboard computers is now on a large scale. ST reported the iNEMO 9-axis sensor blend engine in March and announced that the first time to use its software algorithm was presented at the end of 2011.
Microsoft also announced that it has partnered with STMicroelectronics to develop a solution for sensor processing and embed the solution in the latest Windows 8 operating system.
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