Tong-type ammeter based on Hall effect

• Main Authors: LAI JUNJU, HU JINLEI
• Format: Patent
• Language: Chinese; English
• Published: 15.06.2018
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a tong-type ammeter based on the Hall effect. The ammeter comprises a Hall tong head, a sampling resistor and a control module, wherein the Hall tong head measures current through a Hall element to obtain sampling current; the sampling resistor converts the sampling current into sampling voltage; the control module performs signal processing on the sampling voltage to obtain a numerical value of the measured current; according to the connected relation, the Hall tong head penetrates through a measured wire, and the output end of the Hall tong head is electrically connected with one end of the sampling resistor; the other end of the sampling resistor is electrically connected with the input end of the control module. The ammeter has the advantages that by adopting the improved tooth-shaped meshed jaw shape, the problem that the precision correction is affected by instability of a whole magnetic circuit reluctance due to the unfixed air gap size at an opening of the jaw can be avoided; a