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a bus device

A bus device and bus technology, applied in the direction of instruments, electrical digital data processing, etc., can solve the problem of high cost

Active Publication Date: 2021-05-11
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, using optical fiber as the bus to extend the effective communication distance of the bus, but the cost of this solution is relatively high

Method used

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  • a bus device
  • a bus device

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Embodiment Construction

[0017] Before describing the various embodiments of the present invention in detail, the factors affecting the effective communication distance of the bus are firstly analyzed below.

[0018] figure 1 A schematic diagram of an existing bus device is shown. Such as figure 1 As shown, the bus device 10 has a power supply input A, a point B, which can be connected to a power supply, and a ground terminal C, which can be connected to ground. The bus device 10 is connected to the bus T via point B.

[0019] The bus device 10 includes a high switch module 20 , a low switch module 30 , a resistor 40 and a receiving module 50 .

[0020] The high-position switch module 20 has a control terminal I11, an input terminal I12 and an output terminal I13, and is connected between the power input terminal A and the point B of the bus device 10, that is, the input terminal I12 and the output terminal I13 of the high-position switch module 20 are respectively connected to Power supply input ...

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Abstract

The invention relates to a bus device, which transmits information on the bus by means of multiple levels. The bus device at least includes: a high-level switch module, which has a control terminal, an input terminal and an output terminal, wherein the input terminal and the The output ends are respectively connected to the power input end of the bus device and the first point that can be connected to the bus; the low-position switch module has a control end, an input end and an output end, wherein the input end and the output end of the low-position switch module terminals are respectively connected to the first point and the ground terminal of the bus device; a first resistor is connected between the first point and ground; a charging module is connected to the first point; a control module is used for The charging module is controlled to supply current to the bus based on a control signal provided to the control terminal of the high position switch module and the control terminal of the low position switch module. With the bus device, the effective communication distance of the bus can be extended at a lower cost.

Description

technical field [0001] The invention relates to a bus device. Background technique [0002] A bus is a public communication trunk that transmits information between various devices, and it is a transmission harness composed of wires. In order to be able to transmit information via a bus, a device is usually equipped with a bus device and sends and / or receives information on the bus by controlling the equipped bus device. [0003] Current typical bus standards include RS323, RS485, etc., but the effective communication distance that these bus standards can support is limited. For example, the bus standard RS485 can only support an effective communication distance of 1.5 kilometers. [0004] In order to extend the effective communication distance of the bus, some solutions have been proposed. For example, using optical fiber as the bus to extend the effective communication distance of the bus, but the cost of this solution is relatively high. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40
Inventor 支耀辉丁桂萍万国红杨捷罗宗正
Owner ROBERT BOSCH GMBH
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