Industrial Sensors

Overview

We are developing a portfolio of Industrial motion sensing solutions for a broad range of applications including construction vehicles and industrial robots. Recently we introduced a new high performance and fault tolerant InvenSense inertial measurement unit (IMU) family targeted at industrial applications. The new products, IIM-46234 and IIM-46230, include multiple 6-axis sensors, each of which can measure three dimensions of linear acceleration and three dimensions of rotational rate.

With its ability to take precise measurements in harsh environments characterized by the presence of vibration and wide temperature variations, the InvenSense Industrial IMU product family is applicable to a variety of navigation and stabilization applications including precision agriculture, construction machinery, aerial vehicles and industrial robots. An example application would be a construction vehicle that can combine IIM-4623X measurements with data from a global navigation system, such as GPS, to determine precise position, attitude (orientation) and motion in real time. Such real-time information is crucial for increased automation, efficiency and safety of mobile industrial machinery.

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Industrial Sensor Applications

Precision Agriculture

Bridge GNSS outage and provide terrain compensation inputs during normal operation in various agricultural environments, particularly for Equipment navigation/guidance/positioning

  • Equipment navigation/positioning
  • Precision guidance for spraying, harvesting
  • Bridge GNSS/GPS outage
  • Provide terrain compensation inputs

Construction

Maintain blade and bucket position on bulldozers, excavators, motor-graders, etc. during normal operation.  Additionally, the IMU data is coupled with GNSS to constrain position and bridge GNSS outage.

  • Equipment navigation/guidance/positioning
  • Bridge GNSS/GPS outage
  • Tilt sensing
  • Maintain blade and bucket position on bulldozers, excavators, motor-graders, etc.

HD mapping, surveying and Geo-referencing

  • Camera stabilization
  • Survey equipment stabilization
  • Navigation, Dead reckoning

Industrial Robots, Warehouse and Mobile Robots

  • Navigation, Dead reckoning
  • Platform stabilization

Product Details (both IIM-46234 and IIM-46230)

  • Multiple 6-axis IMUs each of which contains
    • Highly accurate 3-axis accelerometer
    • Highly accurate 3-axis gyroscope
  • Factory calibration over entire operating temperature range for offset, sensitivity (scale factor), G-sensitivity and cross-axis sensitivity
  • Ultra-low noise sensors that deliver precise measurements, even in harsh environments
  • Micro-second time stamps with all sensor measurements for accurate timing transfer
  • Temperature output
  • Supports SPI and UART
  • Temperature range: -40C to 85C
  • 23 x 23 x 8.5mm Module with a 20 pin connector

Advantages

  • High performance module that includes multiple 6-Axis MEMS Gyroscopes and Accelerometers and delivers low bias instability, ARW and VRW
  • TDK’s unique SensorFT™ feature delivers built-in redundancy and early warning against individual sensor failures
  • Factory calibration over for offset, sensitivity (scale factor), G-sensitivity and cross-axis sensitivity enables accurate measurements across entire operating temperature range

These modules also include TDK’s unique SensorFT™ feature that delivers:

  • Built-in redundancy: The module can tolerate one or more failures of its active components without complete failure
  • Early warning: The module provides status indicating changes in its performance, thus providing an early warning to the user, before the module fails completely.
  • Enhanced lifetime and reliability

Coursa Drive Integration

TDK customers can combine the high performance industrial IMU family with the InvenSense Coursa Drive software to deliver a market-ready inertial navigation system (INS) with minimal development cost and resources.

In real time, Coursa Drive provides high-rate, 100 Hz delta positions and orientation to the AV system, complementing the lower-rate position references from GNSS and perception systems.

For improved system fault-tolerance, Coursa Drive can provide decimeter position precision for short periods when the GNSS or perception systems are uncertain or unavailable.

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