Abstract: Embodiments of the present invention include a single fiber bi-directional optical module, and a transport system and method based thereon. The single fiber bi-directional optical module includes a self-search circuit respectively connected to a transmission selection circuit and a receiving selection circuit. The self-search circuit is configured to search for channels, and instruct, the transmission selection circuit to transmit optical signals through one of at least two transmitting channels, where optical wavelengths of the at least two channels are different; and instruct the receiving selection circuit to receive optical signals through one of at least two receiving channels, where optical wavelengths of the at least two receiving channels correspond to the optical wavelengths of the at least two transmitting channels. The single fiber bi-directional optical module does not need to be used in pairs, so that device numbers and maintenance costs are reduced.

Abstract: Embodiments of the present invention include a single fiber bi-directional optical module, and a transport system and method based thereon. The single fiber bi-directional optical module includes a self-search circuit respectively connected to a transmission selection circuit and a receiving selection circuit. The self-search circuit is configured to search for channels, and instruct, the transmission selection circuit to transmit optical signals through one of at least two transmitting channels, where optical wavelengths of the at least two channels are different; and instruct the receiving selection circuit to receive optical signals through one of at least two receiving channels, where optical wavelengths of the at least two receiving channels correspond to the optical wavelengths of the at least two transmitting channels. The single fiber bi-directional optical module does not need to be used in pairs, so that device numbers and maintenance costs are reduced.

Abstract: Two devices for preventing internal combustion of equipment from spreading outwards includes a sampling circuit, a detecting and monitoring circuit, and a low-voltage datum power supply. The sampling circuit includes two thermal detectors. The detecting and monitoring circuit includes a first monitoring output end and a second monitoring output end. When two thermal detectors are both normal, the first monitoring output is inactive and the second monitoring output is inactive. When one of the thermal detectors is abnormal, the first monitoring output is inactive and the second monitoring output is active. When the two thermal detectors are both abnormal, the first monitoring output is active and the second monitoring output is active. The first monitoring output is configured to turn off the power supply of a fan and the second monitoring output is configured to drive an alarm unit.

Abstract: Two devices for preventing internal combustion of equipment from spreading outwards includes a sampling circuit, a detecting and monitoring circuit, and a low-voltage datum power supply. The sampling circuit includes two thermal detectors. The detecting and monitoring circuit includes a first monitoring output end and a second monitoring output end. When two thermal detectors are both normal, the first monitoring output is inactive and the second monitoring output is inactive. When one of the thermal detectors is abnormal, the first monitoring output is inactive and the second monitoring output is active. When the two thermal detectors are both abnormal, the first monitoring output is active and the second monitoring output is active. The first monitoring output is configured to turn off the power supply of a fan and the second monitoring output is configured to drive an alarm unit.