The invention provides an
optical fiber sensing type continuous automatic weighing
system free of speed sensors. The
optical fiber sensing type continuous automatic weighing
system free of the speed sensors comprises a first
fiber bragg
grating sensing weighing device, a second
fiber bragg
grating sensing weighing device, a
fiber bragg
grating demodulation instrument and a computer, wherein the first
fiber bragg grating sensing weighing device and the second
fiber bragg grating sensing weighing device respectively comprise a force transmission component used for transmitting the weight of materials on a material conveying belt, and a
fiber bragg grating strain sensor used for converting the weight of the materials into an optical
signal, the force transmission components are arranged at the front end and the rear end of the material conveying belt respectively, the output end of each fiber bragg grating
strain sensor is connected with the fiber bragg grating
demodulation instrument through a transmission
optical path, and the two paths of optical signals are converted into digital signals through the fiber bragg grating
demodulation instrument and are then transmitted to the computer. According to the
optical fiber sensing type continuous automatic weighing
system free of the speed sensors, all on-site detection elements are of the optical
fiber type, electric sensing elements are eliminated completely, and thus the weighing system can be adapted to severe monitoring environments; due to the fact that a measurement unit is omitted, an error source is eliminated, and the
fault rate of the weighing system is decreased.