Multi-device communication system

The invention discloses a multi-device communication system, which comprises a control device, a first external device and a second external device, and is characterized in that the control device isconnected with the first external device through a signal switching unit to form a first loop; the co...

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Bibliographic Details
Main Authors ZHOU WEIYANG, CHEN LIANG, XU DIFEI, CAI ZHUOFAN
Format Patent
LanguageChinese
English
Published 17.11.2020
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSMISSION
TRANSPORTING
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Summary:The invention discloses a multi-device communication system, which comprises a control device, a first external device and a second external device, and is characterized in that the control device isconnected with the first external device through a signal switching unit to form a first loop; the control device is connected with the second external device through a signal switching unit to form asecond loop; the second loop further comprises a low-voltage-drop diode and a differential amplification circuit, the low-voltage-drop diode is connected between the control device and the second external device in series, and the differential amplification circuit is connected to the two ends of the low-voltage-drop diode in parallel and connected with the signal switching unit. According to themulti-device communication system, the low-voltage-drop diode is arranged, the characteristic that the conduction voltage of the low-voltage-drop diode changes little along with the conduction current is utilized to generate t
Bibliography:Application Number: CN202020081109U