Unity下计步器Pedometer的实现
1.环境
unity,Android(小米5)
2.原理
加速度传感器的计步算法Pedometer
3.实现
注释写的很清楚了应该
using UnityEngine;using working;using UnityEngine.UI;#pragma warning disable CS0618public class pedometer : MonoBehaviour{public Text statusText,stepsText;public float lowLimit = 0.005f; //平缓public float highLimit = 0.1f; // 走路时的波峰波谷public float vertHighLimit = 0.25f;//跳跃时的波峰波谷private bool isHigh = false; // 状态private float filterCurrent = 10.0f; // 滤波参数 得到拟合值private float filterAverage = 0.1f; // 滤波参数 得到均值private float accelerationCurrent = 0f; //拟合值private float accelerationAverage = 0f;//均值private int steps = 0; // 步数private int oldSteps;private float deltaTime = 0f;//计时器private int jumpCount = 0;//跳跃数private int oldjumpCount = 0;private bool startTimer = false;//开始计时private bool isWalking = false;private bool isJumping = false;void Awake(){accelerationAverage = Input.acceleration.magnitude; oldSteps = steps;oldjumpCount =jumpCount ;}void Update(){checkWalkingAndJumping(); // 检测是否行走if (isWalking){statusText.text = ("状态:行走");}else if (!isWalking){statusText.text = ("状态:不动");}if (isJumping){statusText.text = ("状态:跳跃");}}void FixedUpdate(){//通过Lerp对Input.acceleration.magnitude(加速度标量和)滤波//这里使用线性插值的公式正好为EMA一次指数滤波 y[i]=y[i-1]+(x[i]-y[i])*k=(1-k)*y[i]+kx[i]accelerationCurrent = Mathf.Lerp(accelerationCurrent, Input.acceleration.magnitude, Time.deltaTime * filterCurrent);accelerationAverage = Mathf.Lerp(accelerationAverage, Input.acceleration.magnitude, Time.deltaTime * filterAverage);float delta = accelerationCurrent - accelerationAverage; // 获取差值，即坡度if (!isHigh){ if (delta > highLimit)//往高{isHigh = true;steps++;stepsText.text = "步数: " + steps+"\n跳跃数："+jumpCount;}if(delta>vertHighLimit){isHigh = true;jumpCount++;stepsText.text = "步数: " + steps + "\n跳跃数：" + jumpCount;}}else{if (delta < lowLimit)//往低{isHigh = false;}}}private void checkWalkingAndJumping(){if ((steps != oldSteps)||(oldjumpCount != jumpCount)){startTimer = true;deltaTime = 0f;}if (startTimer)//计时器，让更新UI的慢一点，因为你不可能走路只用一帧的时间QAQ{deltaTime += Time.deltaTime;if (deltaTime != 0){if (oldjumpCount != jumpCount)//检测是否是跳跃isJumping = true;elseisWalking = true;}if (deltaTime > 2){deltaTime = 0F;startTimer = false;}}else if (!startTimer){isWalking = false;isJumping = false;}oldSteps = steps;oldjumpCount = jumpCount;}}
