Abstract: With the rapid development of wireless communication technology, wireless communication slowly replaces the original wired data communication in the middle of electrical system. At present, our digital torque wrench based on the capacitive technology is widely used in aerospace, steel, ships, railways and other areas. They have strict requirements for data measurement, data storage. However, the tradition wired data transmission will bring a great measure environment restriction. Which includes transmission distance shorting, the complexity of wiring. Further, the limited data interface of the computer, it is not convenient for transferring large amounts of data due to limited computer transmission interface. This paper designed a wireless communication module by using a lowpower chip, through which currently digital torque wrench communication. This will bring great convenience for the client application, adapt to different environments, and princely performance and market competitiveness. Moreover, the data of multi-device can be achieved simultaneously display to the computer. The product has been tested and verified to achieve the desired effect.

Key words: Capacitive technology, Wireless communication, Digital wrench, Low power consumption