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Based on full consideration of the working conditions in the filed, a monitoring system for precision planter was designed using the technology of sensor, single-chip Microcomputer and wireless transmission. In this system, photoelectric sensor and MSP430 were used to detect the performance of the seeder-metering device and process the data respectively. It mainly detected the miss index, multiple index, seeding amount, seeding rate, the plant spacing and other performance parameters. In the sound-light alarm system, a indicator light was used to show the fault type and location, then the detected data and fault can be displayed on the LED. In order to acquire and analyze the data at real-time, a wireless transmission system based on Bluetooth was designed. FS-BT485Abluetooth module was used to communicate with the host computer. To ensure the uniformity of drilling and sowing, a stepping motor was used to control the seeding rate in the laboratory. The results showed that reliability of the sound-light alarm system was 100% and the photoelectric sensor could detect more than 95% seeds passed it. [ABSTRACT FROM AUTHOR]

The seed-metering device of the no-tillage planter was driven by the ground wheel. Sliding was unavoidable when the ground was covered by the straw. High sliding brought seeding absence and affected the quality of sowing. In order to monitor the sliding of the ground wheel, a monitoring system composed of hardware and software was designed based on ATMEGA16 Microcomputer. In the system, the practical and the theoretical driving distance of the ground wheel were measured by the photoelectric sensor and rotary encoder respectively, then the sliding can be calculated and displayed on the LED. The system could achieve the data of sliding when the planter worked, and this could insure that the driver may recognize the working conditions at any moment. So it had very important significance which can improve the precision of sow. [ABSTRACT FROM AUTHOR]