A monitoring circuit and electronic equipment

Abstract

The embodiment of the present invention provides a monitoring circuit and electronic equipment, which relate to the circuit field and are used to improve the configurability of the system. The monitoring circuit includes: a configuration interface, a control circuit, a detection circuit, a DC voltage source, a switch circuit and a first A resistor; the first end of the configuration interface is respectively connected to the DC voltage source and the input end of the switch circuit; the second end of the configuration interface is respectively connected to the first end of the first resistor and the The output end of the switch circuit is connected; the control end of the switch circuit is connected to the control circuit; the second end of the first resistor is grounded; the detection circuit is connected to the first end of the first resistor; The configuration interface is used to connect dry contacts; wherein, the dry contacts include input dry contacts or output dry contacts; the control circuit is used to control the on-off of the switch circuit; the detection circuit is used to detect the The voltage across the first resistor. The invention is applicable to the monitoring field.

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...

AI Technical Summary

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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