Gravity Sensing

Mobile phone gravity sensing technology: using the piezoelectric effect, it is a heavy weight is measured within ( the weight and the piezoelectric piece as a whole ) gravity two orthogonal direction component size, to determine the horizontal direction.

A brand of mobile hard disk gravity sensing technology: the gravity sensing device comprises a sensor, processor and the controller in three parts. Sensor for detecting state of memory memory, calculation of gravity acceleration value; the processor on the acceleration value exceeds the safety range is judged; and a controller is responsible for controlling the head locking or releasing a safe anchorage zone. Once the sensor detection and the processor judges the gravity acceleration exceeds the safety value, the controller will stop by a hardware control head to read and write, and fast forward, locked in a proprietary head parking area. This series of actions will be in 200 milliseconds to complete. When the sensing device detects the acceleration values returned to normal range, product will return to work.

Gravity sensing technology: gravity sensing technology can be applied in other aspects. For example: intelligent electric vehicle, game machines, computers and so on.

Gravity induced in the mobile storage application: scientific experiments prove that, general memory energized at the time, earthquake of a 1000G, and electrical work, earthquake resistance of less than 200G, very slight bump may have resulted in the disk. Therefore, only effective in ensuring the working condition of product safety, to ensure the data security.

Gravity sensing technology", the use of gravity principle, once detected by accident, in the fall of the moment will head to evacuate to safe berthing areas, can make the mobile memory safety performance upgrade 500%, meet or exceed the power of seismic level, fundamentally ensure that the working state of the mobile memory of the earthquake performance, in order to ensure any state data information security

The apple company developed the first gravitational induction machine

The principle is as follows:

The direction sensor implementation by the iPhone's built-in accelerometer. IPhone uses the accelerometer is three axis accelerometer, divided into X, Y and Z axis to axis. The three shaft to constitute a three-dimensional space is sufficient to detect your iPhone in the various actions. In the actual application is usually in the three axis ( or any two axis) angles formed by computing iPhone tilt angle, and thus calculate the acceleration of gravity.

Through the perception of specific direction inertia force gross, accelerometer can measure the acceleration and gravity. IPhone three axis accelerometer means it can detect movement in 3D space or gravity. Therefore, the accelerometer can not only indicate holding telephone manner ( or automatic rotation function ), and if the phone on the table, can also be instructed to call the face up or down.

The accelerometer can measure the gravitational force ( g ), so when the accelerometer to return a value of 1, expressed in a particular direction perception to 1g. If it is still holding the iPhone without any action, so the gravity of the earth upon the applied force of approximately 1g. If longitudinal vertical grip iPhone, then iPhone will detect and report in the Y axis force of approximately 1G. If you are in a certain angle holding iPhone, then the 1g will be distributed to different shaft, which depends on holding iPhone way. When at a 45 degree angle holding iPhone, 1g force uniform decomposition to a two shaft.

In normal use, the accelerometer in any axis are not detected far outweigh the value of 1G. If the detected accelerometer is greater than 1G, so you can judge whether it is a sudden movement. If shaking, falling or throwing a iPhone, then the accelerometer will be in one or more axes detected with great force.