Electric driving type seed sowing device control system based on GPS (global position system)

Abstract

The invention discloses an electric driving type seed sowing device control system based on a GPS (global position system). The control system comprises a power supply, a main control board, a level switching circuit, a GPS speed measuring module, a direct current brushless motor, a direct current brushless motor driver and a boost module, wherein the power supply supplies power to the main control board and the booster module; power is supplied to the GPS speed measuring module through the main control board; the boost module supplies power to the direct current brushless motor driver; the direct current brushless motor is driven by the direct current brushless motor driver. The control system effectively solves the problem of slipping of a tachometer wheel, and improves the sowing quality at a high speed state; the tachometer wheel is not required to be additionally mounted onto a seeder, and the complexity degree of a machine structure is reduced; the requirements on the environmentare reduced, and the influence on the GPS by dust, wind and rain is smaller than that on a coder; a GPS module can collect more effective information, which is beneficial to the expansion of future system functions.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, in particular to a GPS-based electric drive type seed meter control system. Background technique [0002] In recent years, electric drive seed metering devices have developed rapidly. Compared with traditional seed metering devices, electric drive seed metering devices are not affected by ground wheel slippage and chain jumping. Due to the characteristics of easy automation, the seed metering device has a broad application prospect. Its sowing effect is mainly affected by the control system, and the effect of the control system is mainly affected by the accuracy of the acquired working machine's forward speed. The current mainstream method of collecting speed is in A rotary encoder is installed on the speed measuring wheel. This method can accurately obtain the forward speed of the working machine at low speeds, but at high speeds, the speed measuring wheel will experience serious ...

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Problems solved by technology

[0002] In recent years, electric drive seed metering devices have developed rapidly. Compared with traditional seed metering devices, electric drive seed metering devices are not affected by ground wheel slippage and chain jumping. Due to the characteristics of easy automation, the seed metering device has a broad application prospect. Its sowing effect is mainly affected by the control system, and the effect of the control system is mainly affected by the accuracy of the acquired working machine's forward speed. The current mainstream method of collecting speed is in A rotary encoder is installed on the speed measuring wheel. This method can accurately obtain the forward speed of the working machine at low speeds, but at high speeds, the speed measuring wheel will experience serious slippage. The speed information collected by the encoder and the actual speed There is a large deviation, which will have a negative impact on the quality of the seed

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