Line patrol module based on stm32 high-speed AD sampling

Abstract

The invention discloses a line patrol module based on an stm32 high-speed AD sampling. The line patrol module comprises a data acquisition module, a power supply and communication interface, and an MCU master control unit. The MCU main control unit is connected with the data acquisition module and the power supply and communication interface respectively. The data acquisition module consists of an infrared detection module and a data selection module; the infrared detection module is formed by 32 pairs of infrared emission tube and infrared receiver heads; and the data selection module is formed by a one-out-of-eight data selector 74HC153 and a driving circuit thereof and is used for inputting 32 paths of photoelectric signals into the MCU master control unit successively in sequence. According to the line patrol module, with the data selector, the number of the I / Os of the needed MCU can be reduced; the plating wiring can be done conveniently; an MCU with a few of I / Os can be selected, so that the development cost can be reduced; and function requirements of high adaptability, high precision, and fast response of the line patrol module can be realized.

Description

technical field [0001] The invention is used for an integrated line inspection module of intelligent robots such as smart cars and cleaning robots that need to follow a specific route and has obvious signs on the route, and particularly relates to a line inspection module based on stm32 high-speed AD sampling. Background technique [0002] In recent years, there are more and more high-tech products such as intelligent robots and intelligent hardware, service robots in various venues, cleaning robots at home, patrol robots, etc. Competition, among which Robotom is the most famous. For these robots, we need to locate their locations and plan their walking routes, and the photoelectric line inspection solution has become one of the mainstream solutions for realizing the above functions because of its stability, reliability, ease of use, and high cost performance. [0003] The current implementation of line inspection on the market is to apply several photoelectric sensors (sin...

AI Technical Summary

Problems solved by technology

[0004] 1. The accuracy of line inspection is not high

In order to improve the accuracy of line inspection, the number and density of sensors must be increased, but the above-mentioned photoelectric sensors cannot meet the requirements due to their volume.

[0005] 2. Occupies a large number of I / O resources of the MCU

Each data signal needs to occupy an I / O. To increase the number of sensors, the number of I / O resources of the MCU must be increased, which increases the difficulty and price of MCU selection.

[0006] 3. Occupies a large amount of processing power of the main equipment MCU

Since the above sensor simply passes back the signal collected by the photocell, its processing still needs to be processed by the main equipment MCU. Conduct deeper software algorithm analysis

[0007] 4. Unable to actively adapt to the influence of the environment

The above sensor detects the road and the marked part in the middle through the reference voltage obtained by the preset potentiometer, and cannot adapt to the influence of changes in the intensity of ambient light in real time.

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