Power supply device and power supply system
A technology for power supply equipment and power receiving equipment, which is applied in the field of power supply equipment and power supply systems, and can solve problems such as equipment burning
Active Publication Date: 2019-10-11
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology
Considering the complexity of use, when the power receiving end is a POC machine, the power supply end normally supplies power to the power receiving end; but the power receiving end is a non-POC machine, or a POC machine with an external adapter, if the power supply end continues to be the power receiving end The device will burn out if the power is supplied
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[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only some structures related to the present application are shown in the drawings but not all structures. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0027] The terms "first", "second", etc. in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-e...
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The invention discloses a power supply device and a power supply system. The power supply device comprises a first output end coupled to an external coaxial line and connected to a power receiving device through the coaxial line, a first data signal filtering circuit having a first end coupled to the first output end and used for filtering data signals, a first power supply signal filtering circuit with a first end coupled to the first output end and used for filtering power supply signals, a power supply signal input end coupled to a second end of the first data signal filtering circuit, a first switch arranged on a passage between the first output end and the power supply signal input end, and a device detection unit coupled to the first output end and the first switch and used for detecting whether the data signals are received or not, detecting whether the power receiving device meets the requirements or not when the data signals are not detected, and controlling the first switch to be turned on when the requirements are met so as to supply power to the power receiving device. Therefore, the power supply device can selectively supply the power to the power receiving device according to the condition of the power receiving device.
Description
technical field [0001] The present application relates to the technical field of power supply, in particular to a power supply device and a power supply system. Background technique [0002] The Power Over Coaxia (POC) solution is a technology that couples power signals and data signals on the same coaxial cable for transmission. Its main purpose is to reduce wiring costs, improve installation convenience and safety, and enable Only one coaxial cable is connected between the front-end equipment and the back-end equipment to work normally. [0003] The POC system is divided into power supply end (back-end equipment) and power receiving end (front-end equipment). Front-end machines can be divided into POC machines and non-POC machines according to different models. Considering the complexity of use, when the power receiving end is a POC machine, the power supply end normally supplies power to the power receiving end; but the power receiving end is a non-POC machine, or a POC...
Claims
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IPC IPC(8): H02J3/00H04B3/54H04B3/56H04L12/10
CPCH02J3/00H04B3/54H04B3/548H04B3/56H04L12/10H04L12/40045H04L12/1453
Inventor 朱海刚李德伍方伟杨银昌
Owner ZHEJIANG DAHUA TECH CO LTD