產品說明0
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2022最新版 UM7-LT Orientation Sensor 方向傳感器－不帶外殼（PI2763）
The UM7-LT orientation sensor from Redshift Labs is an Attitude and Heading Reference System (AHRS) that contains a three-axis accelerometer, rate gyro, and magnetometer. It combines this data using an Extended Kalman Filter to produce attitude and heading estimates. This LT version of the UM7 does not have an enclosure.／Redshift Labs 的 UM7-LT 方向感測器是一種姿態和航向參考系統 （AHRS），其中包含三軸加速度計、速率陀螺儀和磁力計。它使用擴展卡爾曼濾波器組合這些數據，以生成姿態和航向估計值。此 LT 版本的 UM7 沒有儲存模組。
＊Two versions of the UM7 are available: the UM7 orientation sensor, which includes an enclosure, and the UM7-LT, which does not. The two versions are functionally equivalent, and both include a cable.
提供「兩個版本」：帶外殼、不帶外殼
2018年8月更新：我們正在向固件版本為U72B的運輸單位過渡，這提供了許多改進，包括更準確的航向估算，更快的EKF收斂和新的校準選項。具有舊U72A固件的設備可以按照這些說明更新到U72B 。
2022年12月更新：
The UM7 orientation sensor is a third-generation Attitude and Heading Reference System (AHRS) from Redshift Labs that produces attitude and heading estimates from triaxial accelerometer, rate gyro, and magnetometer data. Unlike a typical inertial measurement unit (IMU), which only provides raw sensor readings, the UM7 features an onboard microcontroller that combines sensor data using a sophisticated Extended Kalman Filter (EKF) to generate orientation estimates 500 times a second.
The UM7 features a number of improvements over its predecessor, the UM6, including higher gyro bias stability and lower noise, a new communication architecture for improved flexibility, optional NMEA packet transmission, UTC time-synchronization with external GPS, and support for third-order temperature compensation on all sensors. It takes advantage of newer MEMS (micro-electro-mechanical systems) technology that allows it to offer better performance at a lower price.
Connections for power and TTL serial communication can be made to the UM7 through a polarized five-pin male connector on one side, which mates with an included cable assembly. A pair of six-pin expansion headers on the other side of the board provide additional connectivity options, including an alternative SPI interface and a secondary serial interface that can be connected to an external GPS module (like our LS20031 GPS receiver). Additional cable assemblies for the expansion headers are not included.
［Features］
Sensors and processing
- Excellent gyro bias stability over temperature
- Adjustable low-pass filter and EKF settings provide customizable performance for various applications.
- States and sensor data synchronized to GPS position and velocity using optional external GPS module.
- Allows for alignment calibration and third-order bias and scale factor temperature compensation for accelerometers, gyros, and magnetometer.
- Magnetometer soft and hard-iron calibration can be performed through the serial interface software.
產品規格
Dimensions
| Size: | 1.06″ × 1.02″ × 0.26″ |
| Weight: | 3.5 g1 |
General specifications
| Interface: | TTL serial, SPI |
| Minimum operating voltage: | 4 V |
| Maximum operating voltage: | 5.5 V |
| Maximum logic voltage: | 3.3 V2 |
| Axes: | pitch (x), roll (y), and yaw (z) |
| Measurement range: | ±2000°/s (gyro)
±8 g (accelerometer)
±12 gauss (magnetometer) |
| Supply current: | 50 mA |
| Case/enclosure?: | Y |
［Notes／註解:］
１． Without included cable; 6 g with cable.／不含線3.5g； 含線6g。
２． Note: The main UART pins, TX and RX, are 5V-tolerant and can be used directly with 5 V systems that are guaranteed to read 3.3 V as high. The secondary UART and some of the SPI pins are NOT 5V-tolerant.／
注意：主要 UART 引腳 TX 和 RX 可承受 5V 電壓，可直接用於保證讀取 3.3V 為高電平的 5V 系統。 輔助 UART 和一些 SPI 引腳不支持 5V。
