Multi-node current loop full-duplex communication circuit

• Main Authors: WANG BENLIANG, WANG YELIU, ZHANG YAN, LIU GONGQING, YIN YUAN, SU JUNGUI, LING YUAN, WANG QIANG, ZHENG HONGCHANG, SHEN ZHULIN
• Format: Patent
• Language: Chinese; English
• Published: 06.04.2016
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a multi-node current loop full-duplex communication circuit which comprises first, second and third communication terminals and an intermediate node circuit. The second and third communication terminals are in circuit loop communication with the first communication terminal simultaneously via the intermediate node circuit. The intermediate node circuit comprises a power supply circuit, a sending circuit and a reception circuit, and the power supply circuit receives power provided by the second and third communication terminals, and provides working power for the sending and reception circuits according to a power control signal provided by the third communication terminal. When the first communication terminal sends data, the reception circuit receives current signals from the first communication terminal, converts the current signals, and sends the converted current signals to the second and third communication terminals. When the first communication terminal receives data, the sendin