Unlock instant, AI-driven research and patent intelligence for your innovation.

Monitoring circuit for detecting the switching state of electrical switching contacts and method for this

A technology of switching contacts and switching states, which is applied in the field of monitoring lines and can solve problems such as insufficient energy of electrical contacts

Inactive Publication Date: 2019-05-28
WAGO VERW GMBH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potentially insufficient energy for monitoring electrical contacts due to aging, temperature and component tolerances of optocouplers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Monitoring circuit for detecting the switching state of electrical switching contacts and method for this

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 A circuit diagram of a monitoring line 1 set up to detect the switching state of a monitored switching contact 2 is shown. The electrical switching contact 2 is used for switching the power supply of the device 3 . The device 3 is connected in the load circuit 5 together with the energy supply 4 and optionally further components, such as a limiting resistor A1 and / or a fuse A2 . The electrical switch contact 2 not only switches off the load circuit 5 but also switches off the monitoring circuit 6 .

[0022] In order to monitor the switching state of the monitored electrical switching contacts 2 in the load circuit 5, an actuation and reading return circuit 7 is provided, which is controlled by a monitoring unit 8 (for example with a microcontroller ASIC, FPGA or a storable program ( speicherprogrammierbar) in the form of a controller) is loaded with an alternating signal W. The control and reading return loop 7 is coupled to the monitoring circuit 6 via a co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A circuit (1) is specified for detecting a switching state of an electrical switching contact (2) in a power supply path (5) for at least one electrical consumer (3). The monitoring line (1) has a monitoring unit (8) with a converter (9). The converter has a primary coil (10) connected to a monitoring unit (8) and a secondary coil (11) connected to an electrical switching contact (2). The secondary coil (11) and the electrical switching contact (2) electrically connected thereto form a monitoring circuit (6). The monitoring unit (8) is set up for applying electrical power to the primary coil (10) and for determining the electrical switching contacts ( 2) Switch state.

Description

technical field [0001] The invention relates to a monitoring circuit For detecting the switching state of an electrical switching contact (Schaltkontakt) in a power supply path (Stromversorgungspfad) for at least one consumer (elektrisch Verbraucher), wherein the monitoring line has a monitoring unit [0002] Furthermore, the invention relates to a method for detecting a switching state of an electrical switching contact in a power supply path for at least one electrical consumer. Background technique [0003] in safety switchgear It is necessary to determine the state of the electrical switch in order to detect contact defects, such as in particular welding of the contacts. The switching state of an electrical switch (electrical switching contact) is understood to mean whether the switching contact is open or closed. However, the contact transfer resistance of a switching contact is also understood in the broadest sense to be the switching state. [0004] Positively...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/16H03K17/18
CPCH01H9/16H03K17/18H01H1/0015G01R31/327
Inventor C.福斯
Owner WAGO VERW GMBH