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Communication system

A communication system and signal line technology, applied in the electronic field, can solve problems such as damage to the low-voltage communication module 102

Pending Publication Date: 2021-08-06
SHENZHEN IMMOTOR TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, once the signal line D of the charging device 104 is short-circuited or the signal line D of the charging device 104 is mixed with the power line P, when the charging device 104 is connected to the connector 103, the output on the power line P will be large. The current will flow to the signal line D, and then flow into the low-voltage communication module 102 through the connector 103, causing the low-voltage communication module 102 to be damaged

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Embodiment Construction

[0058] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0059] It should be understood that the "plurality" mentioned in this application means two or more. In the description of this application, unless otherwise specified, " / " means or means, for example, A / B can mean A or B; "and / or" in this article is just a description of the relationship between associated objects, It means that there can be three kinds of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in order to clearly describe the technical solution of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can unde...

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Abstract

The invention discloses a communication system, and belongs to the technical field of electronics. A first resistor is connected between a low-voltage power line and the first input end of a first isolation element, a first switch is connected between a second input end of the first isolation element and a ground wire, and the control end of the first switch is connected to a signal line; the first end of a third resistor and the first input end of a second isolation element are connected with a power supply, the second end of the third resistor is connected with the detection end of a control module and the first output end of the first isolation element, and the second output end of the first isolation element is connected with a ground wire; the second switch is connected between the second input end of the second isolation element and the ground wire, and the first control end of the control module is connected with the control end of the second switch; and a second resistor is connected between the signal line and the first output end of the second isolation element, and the second output end of the second isolation element is connected with the ground wire. It is guaranteed that the low-voltage module in the first device is not damaged by the large current output by the second device.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to a communication system. Background technique [0002] When it is necessary to use the charging device to charge the power-consuming device, the charging device and the power-consuming device first need to determine whether they are successfully connected to each other, and the charging device can charge the power-consuming device only after confirming that they are successfully connected to each other. [0003] In related technologies, see figure 1 , the electrical device 101 includes a switch circuit 1011, a battery 1012, a low-voltage communication module 102, and a connector 103, and the low-voltage communication module 102 includes a low-voltage power supply 1021, a resistor R10, a resistor R11, an NMOS (Negative-channel Metal-Oxide-Semiconductor, N channel metal oxide semiconductor) tube Q and MCU (Microcontroller Unit, micro control unit) 1022 . Both the fir...

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Application Information

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IPC IPC(8): H02J7/00H02H7/20H02H9/02
CPCH02J7/0036H02H7/20H02H9/02
Inventor 陈强沈剑黄嘉曦
Owner SHENZHEN IMMOTOR TECH CO LTD