Monitoring circuit and electronic device
A technology for monitoring circuits and controlling circuits, which is applied in the field of circuits, and can solve the problems that the interface cannot be configured as an input dry contact, the interface cannot be configured as an output dry contact, and the system has poor configurability.
Active Publication Date: 2014-07-30
HUAWEI DIGITAL POWER TECH CO LTD
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Problems solved by technology
[0004] In the above dry contact monitoring circuit, the input dry contact monitoring circuit and the output dry contact monitoring circuit use different configuration interfaces respectively. When the output dry contact monitoring circuit configured by the system cannot meet the needs of users, the input dry contact monitoring circuit cannot be The configuration interface of the output dry contact is configured as an output dry contact; when the input dry contact monitoring circuit configured in the system cannot meet the user's needs, the configuration interface in the output dry contact monitoring circuit cannot be configured as an input dry contact, and it is necessary to re-add the one that meets the user's needs. Output dry contact monitoring circuit or input dry contact monitoring circuit, resulting in poor system configurability
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of 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.
[0022] The embodiment of the present invention provides a schematic diagram of a monitoring circuit, such as figure 1 As shown, it includes: a configuration interface 101 , a control circuit 102 , a detection circuit 103 , a DC voltage source 104 , a switch circuit 105 and a first resistor 106 .
[0023] Wherein, the switch circuit 105 includes: an input terminal 1051 , an output terminal 1052 and a control terminal 1053 .
[0024] The first end of the configurati...
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The embodiment of the invention provides a monitoring circuit and an electronic device, and relates to the field of circuits. The monitoring circuit and the electronic device are used for improving configurability of a system. The monitoring circuit comprises a configuration interface, a control circuit, a detection circuit, a direct-current voltage source, a switch circuit and a first resistor. The first end of the configuration interface is connected with the direct-current voltage source and the input end of the switch circuit. The second end of the configuration interface is connected with the first end of the first resistor and the output end of the switch circuit. The control end of the switch circuit is connected with the control circuit. The second end of the first resistor is grounded. The detection circuit is connected with the first end of the first resistor. The configuration interface is used for being connected with a dry contact. The dry contact includes the input dry contact or the output dry contact. The control circuit is used for controlling switching on and switching off of the switch circuit. The detection circuit is used for detecting the voltages at the two ends of the first resistor. The monitoring circuit and the electronic device are suitable for the field of monitoring.
Description
technical field [0001] The invention relates to the field of circuits, in particular to a monitoring circuit and electronic equipment. Background technique [0002] In the site power monitoring system, dry contact monitoring is usually used. Among them, dry contacts are divided into input dry contacts and output dry contacts. Input dry contacts, such as switches or buttons, are used to receive external digital signals; output dry contacts are used to realize alarm output or associated control, etc. [0003] In the existing dry contact monitoring circuit, the input dry contact monitoring circuit and the output dry contact monitoring circuit are independent of each other, that is, the input dry contact monitoring circuit includes a configuration interface, a protection circuit and a detection circuit. Wherein, the detection circuit is used to detect the state of the signal received by the input dry contact connected to the configuration interface. The output dry contact mon...
Claims
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IPC IPC(8): G05B19/048
CPCG05B19/042G05B19/048H04L43/00G01R31/3278H02H9/044
Inventor 马东海冷志伟
Owner HUAWEI DIGITAL POWER TECH CO LTD