ELECTROMETER

摘要

An electrometer includes a sensing module and a control module. The sensing module includes an electrostatic sensing element. The electrostatic sensing element includes two opposite ends. Each end of the electrostatic sensing element is electrically connected to the control module. When an object with electrostatic charge is near but does not touch the electrostatic sensing element, the resistance of the electrostatic sensing element can be changed. The control module electrically connect to the electrostatic sensing element, the control module measures the resistance variation ΔR of the electrostatic sensing element and converts the resistance variation ΔR into the static electricity potential.

主权项

1. An electrometer comprising:
a sensing module comprising an electrostatic sensing element comprising two opposite ends; a control module electrically connected to the two opposite ends; wherein the electrostatic sensing element is single walled carbon nanotube or few-walled carbon nanotube, the control module is configured to measure a resistance variation ΔR of the electrostatic sensing element and convert the resistance variation ΔR into a static electricity potential.