The significance of the Inertial navigation system for future driving
Positioning and navigation
Today's owners are already familiar with the built-in navigation system, which eliminates the need for drivers to plan their own routes in unfamiliar cities. Relying on maps, global navigation satellite systems, path algorithms, and inertial navigation systems, car owners can obtain real-time road congestion information through interconnected services such as "road congestion assistance."
Usually, people want to add inertial sensors to the navigation system, because in this way, their systems can still operate, whether in cities with various buildings or in areas where the global navigation satellite system signal is weak or even interrupted- The inertial sensor can still update the position information after acquiring the last reliable satellite signal.
For example, when a driver is driving in a tunnel and the signal from the positioning system cannot be received, the inertial sensor calculates the direction of the car in the unit distance. The displacement push algorithm calculates the vehicle's displacement and then infers the current specific position of the vehicle based on the signal of the inertial sensor.
The fusion of inertial sensors and perceptual sensors
Vision or perception sensors can detect moving objects, correctly determine the structure of moving objects, and estimate the movement of the vehicle and the distance to surrounding moving objects.
Inertial sensors are completely unaffected by the limiting factors of sensory sensors, such as weather conditions, light, snow, or blocked landmarks. Inertial sensors do not depend on the brightness of the surrounding environment, because they measure physical motion and do not calculate data from images.
In addition, inertial sensors need to be more reliable because they do not require any interconnection and data exchange with equipment outside the body. A recent study has discussed the different modes of cooperation of kinematic inertial sensors and visual perception systems under two levels of weak coupling and tight coupling.
Under weak coupling, the sensing system and the inertial sensor will locate the vehicle independently, and then compare the information with each other to correct the result. Tight coupling is another result, where direct (pixel-level) visual measurements of objects are combined with readings from inertial measurement devices.
In both cases, the MEMS inertial sensor can improve the compatibility of the sensing system to track objects, thereby obtaining more accurate positioning.
Concox has launched an INS-aided GPS Tracker, VG01U, pioneering INS (Inertial navigation system) into a compact GPS tracking device, enabled faster access to location and position availability in weak GPS signal areas, eg underpass, downtown, tunnel. Its embedded algorithm allows managers or insurance providers to capture detailed driver behaviors, and it can be installed directly to the battery ，and position Availability in Weak GPS Area.
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