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@@ -1,12 +1,15 @@
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-/**************************************************
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+/****************************************************
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* Copyright:2016-2020 www.corvin.cn ROS小课堂
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* Description:使用串口来读取IMU模块的数据,并通过
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- * topic将数据发布出来.
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+ * topic将数据发布出来.芯片中默认读取出来的加速度数据
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+ * 单位是g,需要将其转换为ROS中加速度规定的m/s2才能发布.
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* Author: corvin
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* History:
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* 20200403: init this file.
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* 20200406:增加发布yaw数据的话题.
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-**************************************************/
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+ * 20200703:修改三轴加速度数据正负,按照ROS规定沿着各轴
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+ * 正方向时数据为正,否则为负.单位m/s2。
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+*****************************************************/
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#include <ros/ros.h>
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#include <tf/tf.h>
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#include "imu_data.h"
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@@ -29,7 +32,7 @@ int main(int argc, char **argv)
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std::string yaw_topic;
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int pub_hz = 0;
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float degree2Rad = 3.1415926/180.0;
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- float acc_factor = 9.806/256.0;
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+ float acc_factor = 9.806;
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ros::init(argc, argv, "imu_data_pub_node");
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ros::NodeHandle handle;
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@@ -92,9 +95,9 @@ int main(int argc, char **argv)
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0, 0, 0.02};
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//ROS_INFO("acc_x:%f acc_y:%f acc_z:%f",getAccX(), getAccY(), getAccZ());
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- imu_msg.linear_acceleration.x = getAccX()*acc_factor;
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- imu_msg.linear_acceleration.y = getAccY()*acc_factor;
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- imu_msg.linear_acceleration.z = getAccZ()*acc_factor;
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+ imu_msg.linear_acceleration.x = -getAccX()*acc_factor;
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+ imu_msg.linear_acceleration.y = -getAccY()*acc_factor;
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+ imu_msg.linear_acceleration.z = -getAccZ()*acc_factor;
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imu_msg.linear_acceleration_covariance = {0.04, 0, 0,
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0, 0.04, 0,
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0, 0, 0.04};
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