The automobile examination technique experienced a development process near upon semicentennial, developing along with the technical of the electronics and communication continuously.
The level of voluntary activation and activation failure at the same angle was estimated by the twitch superimposition technique, using a 1 Hz supramaximal electrical stimulation.
It takes the single chip microcomputer AT89C51 as the control nucleus, uses digit controlled current to control running of weighbeam, adopts infrared technology to check the balance of weighbeam.