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Active output control method of two-wire system

A technology of output control and two-wire system, which is applied in transportation and packaging, electric vehicles, electrical components, etc., and can solve the problems of high application cost and increased line length

Inactive Publication Date: 2015-12-23
QINGDAO TOPSCOMM COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The input and output modules need to provide power when starting external devices. The traditional input and output modules are passive outputs and require an additional external power supply. Therefore, the length of the lines laid during the application process is increased, resulting in high application costs.

Method used

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  • Active output control method of two-wire system
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  • Active output control method of two-wire system

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Embodiment Construction

[0010] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution in the present invention will be further clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Based on the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0011] The two-wire active output control method provided by the present invention is characterized in that: it is powered by a two-wire communication bus, the charging circuit is used to charge the energy storage capacitor, and the energy storage capacitor and the external controlled device are realized by controlling the on-off of the relay. The turn-on and turn-off of the device realizes the active output control. Reference attached figure 1 Energy storage capacitor charging circuit, the single-...

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Abstract

The invention discloses an active output control method of a two-wire system, and aims at solving the problem that a traditional passive control method needs an external power supply. In the active output control method, a bus supplies power to charge an energy storage capacitor via a charging circuit, the charging process can be controlled in a segmented manner according to the detected voltage of the energy-storage capacitor, the charging current is limited, the capacitance of the capacitor can be determined according to the detected step-up rate of the energy-storage capacitor, and the reliability of active output is ensured. Active output control of the energy-storage capacitor can be realized by controlling ON / OFF of a relay.

Description

technical field [0001] The invention relates to the field of active output control of two-wire bus power supply, in particular to a control method for realizing active output for output modules, input and output modules, and the like. Background technique [0002] The input and output modules need to provide power when starting external devices. The traditional input and output modules are passive outputs and require an additional external power supply. Therefore, the length of the lines laid during the application process is increased, resulting in high application costs. Aiming at this problem, a two-wire active output control method is proposed. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a new control method to solve the problem that the input and output modules need to provide external power supply to start the external equipment under the condition of two-wire bus power supply, and at the same time, it ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 不公告发明人
Owner QINGDAO TOPSCOMM COMM
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