In our world, Wearable devices and Internet of Things[1] is closely related issue in recent years. Many well-known hardware companies and academics era’s development are showing their new functional wearable devices or the algorithm of position calculation. So, what’s special about wearable device? “Everything is internet”
is a importance core value in IOT area which means that IOT devices will collect some information about human’s life and server receive this data for applying to something.
Especially in era like a health cure, communications of device that doctor can know what’s happened about patient at the same time.
Wearable devices and Digital application are used to apply in Interactive platform in recent years. In the current technology of positioning, there are many kinds of indoor positioning algorithm [2] and growing very fast. Outdoor positioning technology already has become stable, like GPS（GPS [3]）.So we focus on indoor positioning, the emerging indoor positioning methods include Wi-Fi [4]、Beacon [5]and Li-Fi [5], technology of performance platform.
1.2 Motivation
Under the rise of the Internet of Things, each wearable device is the best product of the company or university. It can also be seen that each one is very functional and powerful, but the disadvantage is that all devices of almost different manufacturers are difficult to be compatible with each other. However, this paper focuses on how to
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communicate with different devices in the performance of wearable devices. This problem has been solved in our wearable projects in the past few years. So, the main problem is that performance requires those requirements. It needs to be accurate, fast and as free from user interference as possible. However, during my more than two years of participating in the wearable project, we have seen various scenes, from the Shanghai music festival presentation, the wearable presentation of the National Taiwan University, the wearable seminar of the National Chiao Tung University, the high school show and the Tamsui music festival last year. To tell the truth, it is indeed accurate and fast. We also know that the user interference and device connect problem is a problem that can be solved. But always feel that what seems to be missing? In the past few years, the whole set of our dynamic capture systems that does not contain users’
position. We try to use independent systems to calculate and use independent devices to determine the position information. For example, to determine the user's position by using the web camera. So, is it not possible to calculate the location through an additional device? This is the problem discussed throughout the paper.
According to the research from IEEE or ACM, we know that Indoor positioning and outdoor positioning are a special technique that is a problem worth studying.
Because indoor positioning uses many precise methods to define where a target is located without GPS. To compare outdoor positioning and indoor positioning, Outdoor positioning mostly uses GPS to know the position of the aircraft or the ship and then uses the so-called inertial positioning to know the state and orientation of the current target. For example, in navigation, the so-called method was used to know the moving position of the ship or aircraft, so that you can know which direction of the ship or the aircraft will go to.
GPS is well known for its positioning on the earth, but it is also known that there is no way to cover all areas like a mountain, indoors area , underground caves and alien
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results. Because you can install a lot of signal stations that transmit signals indoors, and receive the location through RSSI [6] or triangulation position algorithm. If it is an outer space planet? What if there is no signal? What should I do? This is the timing of inertial positioning. What is inertial positioning algorithm? Inertial positioning uses only its three-axis gyroscope to judge the rotation of its object and accelerometer to know its condition, but its inertial positioning has a characteristic because its sensor has noise, through hardware and software. The filtering algorithm is also limited, and the probability of statistical methods is also. The performance of the most important hardware of this method is the majority, and the same algorithm will have different results for different sensors. One of its methods of using inertial positioning is to use the heading method to calculate the position of the sensor.Figure 1 the tag in signal area has been detected
1.3 Research Target
However, in the use of wearable devices, we have been working on interactive performances to capture motion information in recent years by using the Euler angle from the IMU [6] device, the information of each axis, we can project the human body motion onto the screen by “Unity” application. Through different agreements, different needs are transmitted to achieve the purpose of wearable interactive performance. But
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the only drawback is that we need a set of inertial systems that can be moved to locate.
Besides, the research on inertial positioning at home and abroad is not very sophisticated, and most of the reasons are that the hardware can’t be achieved very precise, and push it to the limit. So we started to study it.
We hope to achieve the following requirements:
1. Do not use extra sensor devices to get new information.
2. Minimize errors of position judgment.
3. Try to combine it into a new module to join the original architecture without change the huge architecture of the original wearable plan.
4. Try to increase the accuracy of motion capture performance.
5. Optimize the display frequency that lets the audience has a wonderful experience by increasing the refresh rate to 144Hz.