Circuit with two-wire system structure of manual button box for electric door

Abstract

The invention discloses a circuit with a two-wire system structure of a manual button box for an electric door, which comprises an indicator light branch circuit and n button switch branch circuits, wherein the n button switch branch circuits are connected in parallel. The circuit is characterized in that the indicator light branch circuit and the n button switch branch circuits are connected in parallel, the indicator light branch circuit is connected with a rectifying circuit in series, an anode of an output end of the rectifying circuit is connected with a voltage stabilizing diode and a light emitting diode in series, a button switch on any branch circuit of the n button switch branch circuits which are connected in parallel is respectively connected with a resistor with different resistance values in series, and n is a natural number. The circuit has the advantage of simplicity in wiring, and only two leads are needed to realize corresponding control functions of a plurality of buttons on the manual button box. When the manual button box is connected to a controller of the electric door, terminal polarities are not distinguished, and the manual button box can be freely connected, so that the possibility of false wiring is fundamentally avoided. Whether an open circuit or a short circuit exists in the circuit or not can be recognized, so as to be convenient for judging faults.

Description

technical field [0001] The invention belongs to the field of electric door control. In particular, it relates to a circuit of an electric door manual button box with a two-wire structure. Background technique [0002] The manual button box is widely used in the control of electric rolling doors and electric telescopic doors. The connection between the existing electric door manual button box and the electric door controller generally adopts a multi-wire connection, that is, the connection between the electric door controller and the manual button box Multiple lead wires need to be connected, specifically: if the number of button switches on the manual button operation box is n, at least n+1 lead wires are required to connect, among which n buttons are respectively connected to a lead wire and a common wire. The wiring of this structure is more complicated, and the wiring is easy to be wrongly connected during construction, and more interfaces of the electric door controller...

AI Technical Summary

Problems solved by technology

The wiring of this structure is more complicated, and the wiring is easy to be wrongly connected during construction, and it needs to occupy more interfaces of the electric door controller.

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