Optical data transmission device, optical communication device, and automatic conveyance device

An optical data transmission device comprising a first communication unit and a second communication unit which are disposed movably relative to each other,

• wherein the first communication unit includes
• a first data conversion unit that converts first wired-line data which is input from a first wired line into first wired-line frame data for optical communication to output the converted frame data to a first optical communication control unit, and inversely converts second wired-line frame data which is input from the first optical communication control unit into second wired-line data to output the inversely-converted data to the first wired line,
• the first optical communication control unit that transmits a first optical signal, optically modulated based on the first wired-line frame data which is input from the first data conversion unit, toward the second communication unit, and demodulates the second wired-line frame data from a second optical signal transmitted from the second communication unit to output the demodulated frame data to the first data conversion unit,
• a bit data input unit including an input circuit that inputs bit data from a signal line different from the first wired line,
• a first bit data communication control unit that generates predetermined bit frame data including bit data which is input to the bit data input unit to output the generated bit frame data to the first optical communication control unit, and causes the first optical communication control unit to transmit a third optical signal, optically modulated based on the bit frame data, toward the second communication unit at a predetermined interval different from that of the first wired-line frame data, and
• the second communication unit includes
• a second data conversion unit that converts the second wired-line data which is input from a second wired line into the second wired-line frame data to output the converted frame data to a second optical communication control unit, and inversely converts the first wired-line frame data which is input from the second optical communication control unit into the first wired-line data to output the inversely-converted data to the second wired line,
• the second optical communication control unit that transmits the second optical signal, optically modulated based on the second wired-line frame data which is input from the second data conversion unit, toward the first communication unit, and demodulates the first wired-line frame data from the first optical signal transmitted from the first communication unit to output the demodulated frame data to the second data conversion unit,
• a second bit data communication control unit that causes the second optical communication control unit to demodulate the bit frame data from the third optical signal transmitted from the first communication unit, and
• a bit data output unit including an output circuit that outputs bit data contained in the bit frame data demodulated in the second optical communication control unit from a signal line different from the second wired line.

An optical data transmission device comprising a first communication unit and a second communication unit which are disposed movably relative to each other,

• the first communication unit includes
• a first data conversion unit that converts first wired-line data which is input from a first wired line into first wired-line frame data for optical communication to output the converted frame data to a first optical communication control unit, and inversely converts second wired-line frame data which is input from the first optical communication control unit into second wired-line data to output the inversely-converted data to the first wired line,
• the first optical communication control unit that transmits a first optical signal, optically modulated based on the first wired-line frame data which is input from the first data conversion unit, toward the second communication unit, and demodulates the second wired-line frame data from a second optical signal transmitted from the second communication unit to output the demodulated frame data to the first data conversion unit,
• a bit data input unit in which an input circuit that inputs bit data from a signal line different from the first wired line is redundantly installed,
• a first bit data communication control unit that generates bit frame data, including bit data input to the bit data input unit, into which a status code indicating a normal state is incorporated to output the generated bit frame data to the first optical communication control unit when it is determined that bit data which is input to the input circuit is consistent with each other, and causes the first optical communication control unit to transmit the third optical signal optically modulated based on the bit frame data toward the second communication unit, and
• the second communication unit includes
• a second data conversion unit that converts second wired-line data which is input from a second wired line into the second wired-line frame data to output the converted frame data to a second optical communication control unit, and inversely converts the first wired-line frame data which is input from the second optical communication control unit into first wired-line data to output the inversely-converted data to the second wired line,
• the second optical communication control unit that transmits the second optical signal, optically modulated based on the second wired-line frame data which is input from the second data conversion unit, toward the first communication unit, and demodulates the first wired-line frame data from the first optical signal transmitted from the first communication unit to output the demodulated frame data to the second data conversion unit,
• a second bit data communication control unit that causes the second optical communication control unit to demodulate the bit frame data from the third optical signal transmitted from the first communication unit, and
• a bit data output unit including an output circuit that outputs bit data contained in the bit frame data demodulated in the second optical communication control unit from a signal line different from the second wired line.