Laser pointer type current meter structure

Abstract

The invention relates to a laser pointer type current meter structure which comprises a current meter shell, wherein a cambered scale line is arranged on the inner end face of the current meter shell; a deflection mechanism is arranged under the circle center position corresponding to the cambered scale line; a deflection coil of the deflection mechanism is connected with a wiring pile head at the bottom of the current meter shell through balance springs at the upper position and the lower position; a window is formed over the central position of the scale line; a laser head is arranged on the inner side of the window and opposite to a deflection shaft of the deflection mechanism; a mirror surface light reflection plate is fixed on the deflection mechanism; and the middle axis of the light reflection surface of the mirror surface light reflection plate and the deflection shaft of the deflection mechanism are positioned on the same straight line. According to the laser pointer type current meter structure, a laser beam is used as a pointer of a current meter instead of an entitative pointer, so that an effect of an extremely large scale disk which cannot be realized by the conventional entitative pointer type current meter can be achieved; and the shortcoming of low respond speed of deflection with the fast change of the measured current due to a large rotational inertia of the conventional entitative pointer is overcome.

Description

technical field [0001] The invention relates to a current measuring instrument, which adopts a laser beam as a pointer of the current meter. Background technique [0002] Today's pointer ammeters all have a physical pointer, but because the physical pointer has a moment of inertia (inertia), the physical pointer cannot be made too long, so it is impossible to make the size range of the dial of the ammeter larger, even if it is not The ammeter with too long physical pointer will also make the indication of the ammeter unable to respond quickly with the rapid current change due to the inherent moment of inertia of the physical pointer. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiency of the physical pointer ammeter, and provide the structure of the ammeter that does not need the physical pointer but uses the laser beam as the pointer. [0004] The technical solution adopted by the present invention to solve the technical ...

AI Technical Summary

Problems solved by technology

[0002] Today's pointer ammeters all have a physical pointer, but because the physical pointer has a moment of inertia (inertia), the physical pointer cannot be made too long, so it is impossible to make the size range of the dial of the ammeter larger, even if it is not The ammeter with too long physical pointer will also make the indication of the ammeter unable to respond quickly to the rapid current change due to the inherent moment of inertia of the physical pointer

Images