1. Luo, X., Zhang, Y., Zhou, Z.: Research progress in farming information acquisition technique for precision agriculture. Transactions of Agricultural Engineering 22(1), 167–173 (2006) (in Chinese)
2. Li, M.: The Technique of Crop Yield Monitor and Key Equipment. Agriculture Network Information (S1), 34–38 (2004) (in Chinese)
3. Reyns, P., Missotten, B., Ramon, H., et al.: A Review of Combine Sensors for Precision Farming. Precision Agriculture (3), 169–182 (2002) (in Chinese)
4. Sun, Y., Wang, M., Ma, D., Huang, J.: Experimental Research on Grain flow measurement System Using an Impact sensor. Transactions of Agricultural Machinery (04), 48–50 (2001) (in Chinese)
5. Chen, S., Zhang, W., Li, X., Li, M., Huang, J.: Experiment Research of Grain Mass Flow Sensor Based on Impact. Transactions of Agricultural Machinery (02), 82–84 (2005) (in Chinese)