Magnetic navigation sensor for AGV

Abstract

The invention discloses a magnetic navigation sensor for an AGV (Automatic Guided Vehicle). The magnetic navigation sensor comprises a magnetic stripe, an AGV master controller and a magnetic navigation controller, wherein the magnetic navigation controller comprises a power conversion module, a state display module, a magnetic field detection module, a single chip and a communication module, wherein the state display module is used for displaying a state through an LED (Light Emitting Diode); the power conversion module is used for converting 5V voltage inputted from the external into 3.3V voltage and then supplying to the single chip and the other modules; the magnetic field detection module comprises a geomagnetic detection unit and a geomagnetic sensor; the single chip is communicated with the geomagnetic detection unit through a SPI (Serial Peripheral Interface) bus so as to realize data transmission; the geomagnetic detection unit is connected with the geomagnetic sensor and is used for acquiring the geomagnetic information; a CAN interface is adopted by the communication module for realizing the communication between the single chip in the magnetic navigation controller and the external AGV master controller; the AGV master controller is connected with the single chip through the communication module; and the single chip is used for supplying road information to the AGV master controller. The magnetic navigation sensor for the AGV is integrated with the power conversion, data collection, state display and data communication modules and has the advantages of high accuracy and convenience in operation.

Description

technical field [0001] The invention belongs to the technical field of industrial control, in particular to a magnetic navigation sensor for an AGV. Background technique [0002] With the continuous development of automatic guided transport vehicles, the requirements for the accuracy and reliability of navigation are constantly increasing. At present, the commonly used navigation methods are magnetic navigation, inertial navigation, laser navigation, etc., but the cost difference and cost of different navigation methods need to be considered in actual use. Technical requirements, currently the most common in my country is the magnetic guidance AGV. [0003] Traditional magnetic navigation sensors use Hall devices as magnetic field detection sensors. However, due to the accumulation of Hall devices over time and magnetism, temperature drift and magnetic saturation are prone to occur. Saturation produces an output signal that causes navigation blind spots. At the same time, H...

AI Technical Summary

Problems solved by technology

[0003] Traditional magnetic navigation sensors use Hall devices as magnetic field detection sensors. However, due to the accumulation of Hall devices over time and magnetism, temperature drift and magnetic saturation are prone to occur. Saturation produces an output signal leading to navigation blind spots

At the same time, Hall devices are only suitable for detecting intermittent magnetic fields and are not suitable for detecting continuous magnetic fields. Generally, the detection height of Hall devices is relatively low, and it is easy to encounter obstacles on the ground when driving, causing mechanical damage to Hall sensors.

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