초록 ▼

The condition of each of machines on dispersed lines can be quantitatively grasped before an error occurs, without going to the machine installation site, so that the efficiency of machine fault diagnosis can be improved. One server terminal for diagnosis is provided for each factory at the use side

The condition of each of machines on dispersed lines can be quantitatively grasped before an error occurs, without going to the machine installation site, so that the efficiency of machine fault diagnosis can be improved. One server terminal for diagnosis is provided for each factory at the use side. As clients for this server terminal, a press controller, a workpiece conveyor control motion controller, and a line production management computer are connected through an Ethernet. The server terminal is connected via modem and telephone line to a diagnosis terminal with a modem which is installed at the maker side. The operating condition of a press is measured and recorded as continuous time-series waveform data, using an analog input card. The recorded waveform data is processed to be graphically displayed on the diagnosis terminal, etc.

대표청구항 ▼

The condition of each of machines on dispersed lines can be quantitatively grasped before an error occurs, without going to the machine installation site, so that the efficiency of machine fault diagnosis can be improved. One server terminal for diagnosis is provided for each factory at the use side

The condition of each of machines on dispersed lines can be quantitatively grasped before an error occurs, without going to the machine installation site, so that the efficiency of machine fault diagnosis can be improved. One server terminal for diagnosis is provided for each factory at the use side. As clients for this server terminal, a press controller, a workpiece conveyor control motion controller, and a line production management computer are connected through an Ethernet. The server terminal is connected via modem and telephone line to a diagnosis terminal with a modem which is installed at the maker side. The operating condition of a press is measured and recorded as continuous time-series waveform data, using an analog input card. The recorded waveform data is processed to be graphically displayed on the diagnosis terminal, etc. cal regenerator of claim 1 wherein said phase shifting means is a Raman amplifier. 9. The optical regenerator of any one of claims 6, 7, or 8 wherein the phase shifting means provides a phase shift between the counter-propagating varying-soliton signals of 180 degrees (π radians). 10. The optical regenerator of claim 7 wherein the respective amplitudes of the counter propagating varying-soliton signals are substantially equal before reaching the optical amplifier. 11. The optical regenerator of claim 7 wherein said optical amplifier has sufficient gain to offset signal power lost in traversing the loop mirror. 12. The optical regenerator of claim 1 wherein the phase shifting means is a combination of an asymmetrical coupler incorporated in the loop mirror for dividing varying-soliton signals input to the loop mirror into counter-propagating signals of different amplitude and an optical amplifier optically coupled in series arrangement into the waveguide fiber of the loop mirror at a point along the length of the waveguide fiber which is asymmetrically located with respect to the waveguide fiber length. 13. The optical regenerator of claim 12 further including a polarization controller coupled in series arrangement into the loop mirror. 14. The optical regenerator of claim 12 wherein the combination of phase shifting means provides a phase shift between the counter-propagating varying-soliton signals of 180 degrees (π radians). 15. The optical regenerator of claim 1 wherein said second optical waveguide fiber has a negative total dispersion in the range of -70 ps/nm-km to -100 ps/nm-km. 16. The optical regenerator of claim 13 wherein said second optical waveguide fiber has an effective area in the range 20 μm2to 40 μm2and a non-linear refractive index not less than 2×10-20m2/W. 17. The optical regenerator of claim 16 wherein the negative total dispersion is in the range -80 ps/nm-km to -90 ps/nm-km, the effective area is in the range 20 μm2to 30 μm2,and the non-linear refractive index is in the range 2.5 m2/W to 4 m2/W. 18. The optical regenerator of claim 1 further including a preamplifier optically coupled to the regenerator to increase the amplitude of varying-soliton signals propagating toward said preamplifier and on toward said loop mirror such that the signal amplitude is above the threshold amplitude at which the signal undergoes self phase modulation. 19. The optical regenerator of claim 1 further including a post-amplifier to amplify the signal back to the system designed launched power level. 20. An optical waveguide telecommunications system comprising: an optical signal transmitter; an optical signal receiver; a length of optical waveguide fiber optically coupled between said optical signal transmitter and said optical signal receive; and, incorporated into said length of optical waveguide fiber, an optical regenerator including a first optical waveguide fiber having a positive total dispersion and a first length; a second optical waveguide fiber for compensating dispersion of said first optical waveguide fiber, said second optical waveguide fiber having a second length and a negative total dispersion and being incorporated into a loop mirror, wherein said second optical waveguide fiber carries counter-propagating varying-soliton signals in the loop mirror; phase shifting means incorporated in the loop mirror to produce a phase shift between the counter-propagating varying-soliton signals in the loop mirror, the phase shift produced being sufficient to cause varying-soliton signals to be coupled out of the loop mirror; wherein, the respective first and second lengths multiplied by the respective positive and negative total dispersions of the optical waveguide fibers provide respective dispersion products that add algebraically to provide an average total dispersion over the total length of optical waveguide fibe