1. Yang, X.: Development of Portable Automobile Engine Speed Measuring Instrument. Hefei University of Technology, Hefei (2014). (in Chinese)
2. Li, Y., Zhou, L.: Research on automobile engine speed measurement system. Indus. Control Comput. 23(04), 34–35 (2010). (in Chinese)
3. Chen, Y., Zhao, Y., Dai, J.: Motor vehicle engine tachometer calibration device. Shanghai Meas. Test 46(04), 11–14 (2019). (in Chinese)
4. Yang, C., Yang, L., Yao, Q.: A test system of vehicle operating condition parameters based on labVIEW. Tractor Agric. Transporter 37(05), 51–54 (2010). (in Chinese)
5. Xu, S., Wei, M.: Measurement method and experimental study of engine instantaneous speed. Automobile Technol. 10, 49–52 (2011). (in Chinese)