Optical receiver capable of transmitting signal during power interruption and emergency broadcast system using the same

Abstract

The invention relates to an optical receiver used for transmitting signals during power breakdown, and an emergency broadcasting system thereof. The optical receiver receives and processes an optical signal transmitted by an optical fiber network, and comprises a photosensitive diode, a switching device and a passive circuit, and the photosensitive diode is coupled with the optical fiber network for receiving the optical signal. The switching device is connected with the cathode end of the photosensitive diode and coupled with a power source end when electricity is supplied by an external power source, and the switching device is connected with the cathode end of the photosensitive diode and coupled with a ground end when power supply is halted, thus leading the photosensitive diode to transform optical signals to electric signals during normal or interrupted external power supply and outputting the electric signals by the passive circuit. The optical receiver can cooperate with a transmitting office end and distribute emergency information to user ends during power breakdown. The emergency broadcasting system comprises a signal outputting device that is used for outputting optical signals, the optical fiber network that is coupled with the signal outputting device, and the optical receiver that comprises the photosensitive diode, the switching device and the passive circuit, and the photosensitive diode can transform optical signals to electric signals with or without external power supply and output the electric signals by the passive circuit.

Description

technical field [0001] The present invention relates to an optical receiver and its broadcasting system, in particular to an optical receiver capable of transmitting signals (that is, signals) during power outages and its related emergency broadcasting system (OPTICAL RECEIVER CAPABLE OF TRANSMITTING SIGNALS DURING POWER INTERRUPTIONAND EMERGENCY BROADCAST SYSTEM USING THE SAME). Background technique [0002] Optical fiber transmission has the advantages of sufficient bandwidth capacity, immunity to electromagnetic wave interference and low loss, so it has become a trend of broadband network deployment. The laying of fiber-optic networks is gradually developing from backbone networks and metropolitan networks to access networks. Fiber-optic access network technology (FTTx) includes several ways to build optical-fiber access networks, among which fiber-to-the-home (FTTH, Fiber to the home) service lays the scope of the optical fiber network from the equipment in the central ...

AI Technical Summary

Problems solved by technology

[0007] It can be seen that the above-mentioned existing optical receiver and its broadcasting system obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously related The problem that the industry is eager to solve

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