Communication loading, unloading and misconnection prevention circuit for dual-power-supply controller

Abstract

The invention relates to a communication loading, unloading and misconnection prevention circuit for a dual-power-supply controller which is used for realizing on-off of a communication function in the dual-power controller system and preventing misconnection of wiring terminals. The circuit comprises a wiring terminal, an indicating lamp module and a communication function module. An external power supply is connected with the indicating lamp module and the communication function module through a wiring terminal. The indicating lamp module comprises an optical coupler and a light emitting diode. The cathode of the light emitting diode is grounded; the anode of the light emitting diode, the first resistor, the second resistor and the light-emitting power supply are connected in sequence; the first end of the switch part of the optical coupler is connected between the first resistor and the second resistor, the second end of the switch part of the optical coupler is grounded, the external power supply, the wiring terminal, the third resistor, the light-emitting part of the optical coupler and the fourth resistor are sequentially connected and grounded, and compared with the prior art, the circuit has the advantages of being low in power consumption, safe and reliable to use and the like.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a communication loading and unloading and wrong connection prevention circuit for a dual power supply controller. Background technique [0002] The dual power supply controller is used to realize the automatic switching between the common power supply and the backup power supply. It is mainly used in some important occasions that require uninterrupted power supply. The continuity of power supply is extremely important for some special user departments, such as hospitals and airports. Normal operation under normal power supply conditions, it has been widely used in high-rise buildings, post and telecommunications, coal mines, military facilities, large-scale industries, power grids, fire protection, hospitals, subways and other occasions where power failure cannot be interrupted. [0003] Most of the dual power controllers now have a communication function, but not...

AI Technical Summary

Problems solved by technology

[0003] Most of the dual power controllers now have a communication function, but not every occasion can use this communication function

This leads to the fact that the communication chip is still working when the communication function is not used, resulting in a waste of system power consumption

In addition, the on-site wiring personnel will be negligent after all. Once they accidentally connect the wiring terminals in the wrong order, the data will not be collected, and the controller may be damaged after a long time of power-on, causing great consequences.

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