1. 光线传感器光线传感器的功能主要是让手机感应环境光线的强度，用来调

1. 光线传感器<br>光线传感器的功能主要是让手机感应环境光线的强度，用来调节手机屏幕的亮度。运用光线传感器不仅方便用户自动调节光线，而且省电从而延长电池寿命的作用。<br><br>2. 重力传感器<br>重力传感器通过压电效应来实现功能效果。重力传感器内部有一块重物与压电片整合在一起，通过正交两个方向产生的电压大小来计算出水平方向。<br><br>3. 距离传感器<br>距离传感器通过红外线LED灯发射红外线，被物体反射后由红外线探测器接收，根据接收红外线的强度来判断距离。感知手机与人体的距离来控制手机屏幕的亮灭。<br><br>4. 指纹传感器<br>电容式指纹传感器是现在较为主流的技术。指纹传感器在工作时，手指是电容的一极，硅芯片数组则是另一极。通过人体指纹的波峰波谷来与电容传感器之间的距离形成电容高低差，从而描绘出指纹的图形。<br><br>5. 加速度传感器<br>加速度传感器通过压电效应实现三个维度来确定加速度方向，功耗小但精度低，其作用是判断手机的朝向方向。<br><br>6. 磁场传感器<br>磁场传感器通过电阻的测量变化值来确定磁场强度，其作用为指南针以及地图导航应用。<br><br>7. 陀螺仪<br>陀螺仪是测量沿一个轴或几个轴动作的角速度。其作用是可以跟踪并捕捉3D空间的所有动作，很好的提供真实的、精确的导航系统、VR技术等功能。<br><br>8. GPS<br>最熟系的GPS技术是通过GPS卫星发射坐标的时间戳与接收是的时间差来计算出手机与卫星直接的距离，用途为定位，测速，测量距离跟导航。<br><br>9. 紫外线传感器<br>在紫外线的照射下，金属化合物或某些半导体的光电发射效应会释放大量电子，通过检测这种放电效应便可计算出紫外线的强度。<br><br>10. 气压传感器<br>气压传感器是薄膜与变阻器或电容连接在一起，当气压发生变化时，会导致电阻或电容值发生变化，得到气压的数据。<br><br>11. 心率传感器<br>心率传感器通过高亮度的LED灯照射手指，捕捉血液到毛血细管时的周期性变化，得出心脏的收缩频率、心跳数据。<br><br>12. 血氧传感器<br>通过用红外光与红光LED同时照射手指，显示血液当中血红蛋白与氧合血红蛋白对于红光的吸收率，测量反射光的吸收光谱，从而测到血液含氧量。<br><br>13. 霍尔传感器<br>主要依据霍尔磁电效应，当电流通过位于磁场中的导体时，磁场会对导体中的电子产生一个垂直于电子运动方向上的作用力，从而在导体的两端产生电势差。主要应用于翻盖解锁、合盖锁定屏幕功能。

1. Light sensor<br>The function of the light sensor is to let the mobile phone sense the intensity of ambient light and adjust the brightness of the mobile phone screen. The use of light sensor not only facilitates the user to automatically adjust the light, but also saves power, so as to prolong the service life of the battery.<br>2. Gravity sensor<br>The function of gravity sensor is realized by piezoelectric effect. There is a weight inside the gravity sensor integrated with the piezoelectric sheet, and the horizontal direction is calculated by the voltage generated in two orthogonal directions.<br>3. Distance sensor<br>The distance sensor emits infrared through the infrared LED lamp, is reflected by the object and received by the infrared detector, and judges the distance according to the intensity of the received infrared. Sense the distance between the mobile phone and the human body to control the on and off of the mobile phone screen.<br>4. Fingerprint sensor<br>Capacitive fingerprint sensor is the mainstream technology. When the fingerprint sensor works, the finger is one pole of the capacitor and the silicon chip array is the other pole. The height difference of capacitance is formed by the distance between the peak and trough of human fingerprint and the capacitance sensor, so as to depict the pattern of fingerprint.<br>5. Acceleration sensor<br>The acceleration sensor realizes three dimensions to determine the acceleration direction through piezoelectric effect. It has low power consumption but low precision. Its function is to judge the direction of the mobile phone.<br>6. Magnetic field sensor<br>The magnetic field sensor determines the magnetic field strength through the measured change value of resistance, which is used for compass and map navigation applications.<br>7. Gyroscope<br>Gyroscope is to measure the angular velocity moving along one axis or several axes. Its function is to track and capture all actions in 3D space, and provide real and accurate navigation system, VR technology and other functions.<br>8. GPS<br>The most familiar GPS technology is to calculate the direct distance between the mobile phone and the satellite through the time stamp of the GPS satellite launch coordinates and the time difference between the received coordinates. It is used for positioning, speed measurement, distance measurement and navigation.<br>9. Ultraviolet sensor<br>Under the irradiation of ultraviolet light, the photoelectric emission effect of metal compounds or some semiconductors will release a large number of electrons. The intensity of ultraviolet light can be calculated by detecting this discharge effect.<br>10. Air pressure sensor<br>The air pressure sensor is a thin film connected with a rheostat or capacitor. When the air pressure changes, the resistance or capacitance will change to obtain the air pressure data.<br>11. Heart rate sensor<br>The heart rate sensor irradiates the finger through the high brightness LED lamp, captures the periodic change when the blood reaches the capillary, and obtains the systolic frequency and heartbeat data of the heart.<br>12. Blood oxygen sensor<br>By irradiating the finger with infrared light and red light LED at the same time, the absorption rate of hemoglobin and oxygenated hemoglobin in blood for red light is displayed, and the absorption spectrum of reflected light is measured, so as to measure the oxygen content of blood.<br>13. Hall sensor<br>According to the hall magnetoelectric effect, when the current passes through the conductor in the magnetic field, the magnetic field will produce a force perpendicular to the moving direction of the electron in the conductor, resulting in a potential difference at both ends of the conductor. It is mainly used for the screen functions of flap unlocking and lid closing locking.

1. Light sensor The function of the light sensor is to make the mobile phone sense the intensity of ambient light, which is used to adjust the brightness of the mobile phone screen. Using the light sensor not only makes it convenient for users to automatically adjust the light, but also saves electricity and thus prolongs the battery life. 2. Gravity sensor The gravity sensor realizes the functional effect through piezoelectric effect. There is a weight inside the gravity sensor integrated with the piezoelectric sheet, and the horizontal direction can be calculated by the voltage generated in two orthogonal directions. 3. Distance sensor The distance sensor emits infrared rays through the infrared LED lamp, which is reflected by the object and then received by the infrared detector. The distance is judged according to the intensity of the received infrared rays. Perceive the distance between the mobile phone and the human body to control the brightness of the mobile phone screen. 4. Fingerprint sensor Capacitive fingerprint sensor is the mainstream technology now. When the fingerprint sensor works, the finger is one pole of the capacitor and the silicon chip array is the other pole. The height difference of capacitance is formed by the distance between the peaks and valleys of human fingerprint and the capacitance sensor, so as to describe the pattern of fingerprint. 5. Acceleration sensor The acceleration sensor determines the direction of acceleration through three dimensions of piezoelectric effect, with low power consumption but low accuracy, and its function is to judge the direction of the mobile phone. 6. Magnetic field sensor The magnetic field sensor determines the magnetic field strength by measuring the change value of resistance, which is used for compass and map navigation applications. 7. gyroscope Gyroscope measures the angular velocity along one axis or several axes. Its function is to track and capture all movements in 3D space, and provide real and accurate navigation system, VR technology and other functions. 8. GPS The most familiar GPS technology is to calculate the direct distance between the mobile phone and the satellite by the time difference between the transmitting coordinates of GPS satellite and the receiving coordinates, which is used for positioning, speed measurement, distance measurement and navigation. 9. Ultraviolet sensor Under the irradiation of ultraviolet rays, the photoelectric emission effect of metal compounds or some semiconductors will release a large number of electrons, and the intensity of ultraviolet rays can be calculated by detecting this discharge effect. 10. Air pressure sensor The air pressure sensor is a thin film connected with a rheostat or a capacitor. When the air pressure changes, it will cause the resistance or the capacitance value to change, and get the air pressure data. 1. Heart rate sensor The heart rate sensor illuminates the finger with high brightness LED lamp, captures the periodic changes of blood when it reaches the capillary of hair blood, and obtains the contraction frequency and heartbeat data of the heart. 12. Blood oxygen sensor By irradiating fingers with infrared light and red LED at the same time, the absorption rate of hemoglobin and oxyhemoglobin in blood for red light is displayed, and the absorption spectrum of reflected light is measured, so as to measure the oxygen content of blood. 13. Hall sensor According to Hall magnetoelectric effect, when the current passes through the conductor located in the magnetic field, the magnetic field will exert a force on the electrons in the conductor perpendicular to the direction of electron movement, thus generating a potential difference between the two ends of the conductor. It is mainly used to unlock the flip cover and lock the screen.