CN218733402U

CN218733402U - Double-alternating-current selection switching circuit

Info

Publication number: CN218733402U
Application number: CN202222658106.3U
Authority: CN
Inventors: 叶山峰; 王汇灵; 邓贤勇; 罗宏
Original assignee: Chengdu Dingcheng Taixin Technology Co ltd
Current assignee: Chengdu Dingcheng Taixin Technology Co ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-03-24
Anticipated expiration: 2032-10-10

Abstract

The utility model relates to a double-AC selection switching circuit, which comprises a first path of AC input voltage acquisition circuit, a second path of AC input voltage acquisition circuit, a relay switching selection circuit and a controller; the input end of the first path of alternating current input voltage acquisition circuit is connected with a fire wire end L1 and a zero wire end N1, and the output end of the first path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the input end of the second path of alternating current input voltage acquisition circuit is connected with the fire wire end L2 and the zero wire end N2, and the output end of the second path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the output end of the controller is connected with the input end of the relay switching selection circuit, and the output end of the relay switching selection circuit is connected with the live wire output end OUT-L and the zero wire output end OUT-N. The utility model discloses can realize exchanging input and keep apart the collection to realize two exchanges according to voltage acquisition data and select switching control, the integrated level is high, reliable and stable, and switching time is short, and the electricity can move by oneself on the whole circuit, does not need artificial intervention.

Description

Double-alternating-current selection switching circuit

Technical Field

The utility model relates to an alternating current power supply technical field especially relates to a switching circuit is selected to two alternating currents.

Background

The power supply system generally adopts double alternating current input power supply, the power supply system can only receive one path of alternating current input in the double alternating current input at any time, the conventional mode is to use air switch, but the problem that the double alternating current input is short-circuited due to improper air switch in actual operation, so that a product on a line is damaged is often caused; when the air switch is used for switching, the function that one path of alternating current in double alternating current input is preferentially accessed to a power supply system cannot be automatically realized, and when the other path of alternating current input does not exist, the other path of alternating current input needs to be manually switched, so that the labor and capital costs are high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a two interchange selection switch circuits, solved the problem that the empty switch mode of opening exists of current use.

The purpose of the utility model is realized through the following technical scheme: a double-alternating-current selection switching circuit comprises a first path of alternating-current input voltage acquisition circuit, a second path of alternating-current input voltage acquisition circuit, a relay switching selection circuit and a controller; the input end of the first path of alternating current input voltage acquisition circuit is connected with a fire wire end L1 and a zero wire end N1, and the output end of the first path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the input end of the second path of alternating current input voltage acquisition circuit is connected with a fire wire end L2 and a zero wire end N2, and the output end of the second path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the output end of the controller is connected with the input end of the relay switching selection circuit, and the output end of the relay switching selection circuit is connected with the live wire output end OUT-L and the zero wire output end OUT-N.

The relay switching selection circuit comprises a relay driving circuit and relays RY1, RY2, RY3 and RY4; the output end of the controller is connected with the input end of the relay driving circuit, and the output end of the relay driving circuit is connected with the coils of the relays RY1, RY2, RY3 and RY4; the contact of the relay RY1 is connected between the live wire end L1 and the live wire output end OUT-L, the contact of the relay RY2 is connected between the zero line end N1 and the zero line output end OUT-N, the contact of the relay RY3 is connected between the live wire end L2 and the live wire output end OUT-L, and the contact of the relay RY4 is connected between the zero line end N2 and the zero line output end OUT-N.

The first path of alternating current input voltage acquisition circuit comprises resistors R1, R2 and R3, a capacitor C1 and an optocoupler U1; the resistor R3 and the capacitor C1 are connected in parallel between a No. 2 pin and a No. 3 pin of the optocoupler U1, one end of the resistor R1 is connected with the live wire end L1, the other end of the resistor R1 is connected with a No. 2 pin of the optocoupler U1, one end of the resistor R2 is connected with the No. 1 pin, and the other end of the resistor R2 is connected with a No. 3 pin of the optocoupler U1; and the 6 th pin and the 7 th pin of the optocoupler U1 are connected with the controller.

The second path of alternating current input voltage acquisition circuit comprises resistors R4, R5 and R6, a capacitor C2 and an optocoupler U2; the resistor R5 and the capacitor C2 are connected in parallel between a No. 2 pin and a No. 3 pin of the optocoupler U2, one end of the resistor R4 is connected with a zero line end N2, the other end of the resistor R4 is connected with a No. 2 pin of the optocoupler U2, one end of the resistor R5 is connected with a fire line end L2, and the other end of the resistor R5 is connected with a No. 3 pin of the optocoupler U2; and the 6 th pin and the 7 th pin of the optocoupler U2 are connected with the controller.

The utility model has the advantages of it is following: the double-alternating current selection switching circuit can realize alternating current input isolation acquisition, realizes double-alternating current selection switching control according to voltage acquisition data, has high integration level, stability, reliability and short switching time, can automatically run when the whole circuit is powered on, and does not need human intervention.

Drawings

Fig. 1 is a schematic diagram of the circuit structure of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the utility model relates to a double-ac selection switching circuit, which comprises a first ac input voltage acquisition circuit, a second ac input voltage acquisition circuit, a relay switching selection circuit and a controller; the input end of the first path of alternating current input voltage acquisition circuit is connected with a fire wire end L1 and a zero wire end N1, and the output end of the first path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the input end of the second path of alternating current input voltage acquisition circuit is connected with a fire wire end L2 and a zero wire end N2, and the output end of the second path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the output end of the controller is connected with the input end of the relay switching selection circuit, and the output end of the relay switching selection circuit is connected with the live wire output end OUT-L and the zero wire output end OUT-N.

Further, the relay switching selection circuit includes a relay drive circuit, relays RY1, RY2, RY3, and RY4; the output end of the controller is connected with the input end of the relay driving circuit, and the output end of the relay driving circuit is connected with the coils of the relays RY1, RY2, RY3 and RY4; the contact of the relay RY1 is connected between the live wire end L1 and the live wire output end OUT-L, the contact of the relay RY2 is connected between the zero line end N1 and the zero line output end OUT-N, the contact of the relay RY3 is connected between the live wire end L2 and the live wire output end OUT-L, and the contact of the relay RY4 is connected between the zero line end N2 and the zero line output end OUT-N.

Further, the first path of alternating current input voltage acquisition circuit comprises resistors R1, R2 and R3, a capacitor C1 and an optocoupler U1; the resistor R3 and the capacitor C1 are connected in parallel between a No. 2 pin and a No. 3 pin of the optocoupler U1, one end of the resistor R1 is connected with the fire wire end L1, the other end of the resistor R1 is connected with the No. 2 pin of the optocoupler U1, one end of the resistor R2 is connected with the No. 1 pin, and the other end of the resistor R2 is connected with the No. 3 pin of the optocoupler U1; and the 6 th pin and the 7 th pin of the optocoupler U1 are connected with the controller.

Further, the second path of alternating current input voltage acquisition circuit comprises resistors R4, R5 and R6, a capacitor C2 and an optocoupler U2; the resistor R5 and the capacitor C2 are connected in parallel between a No. 2 pin and a No. 3 pin of the optocoupler U2, one end of the resistor R4 is connected with the zero line end N2, the other end of the resistor R4 is connected with a No. 2 pin of the optocoupler U2, one end of the resistor R5 is connected with the fire line end L2, and the other end of the resistor R5 is connected with a No. 3 pin of the optocoupler U2; and the 6 th pin and the 7 th pin of the optocoupler U2 are connected with the controller.

The working process of the utility model is as follows: the utility model discloses the controller adopts the singlechip to realize, at first gathers double-alternating current input voltage respectively through first all the way alternating current input voltage acquisition circuit and second way alternating current input voltage acquisition circuit and carries to singlechip ADC pin, and the singlechip is according to voltage acquisition data, through the corresponding relay of ordinary output pin output level control relay drive circuit actuation, and then realizes double-alternating current selection switching function.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A kind of double AC selects the switching circuit, characterized by that: the relay switching circuit comprises a first path of alternating current input voltage acquisition circuit, a second path of alternating current input voltage acquisition circuit, a relay switching selection circuit and a controller; the input end of the first path of alternating current input voltage acquisition circuit is connected with a fire wire end L1 and a zero wire end N1, and the output end of the first path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the input end of the second path of alternating current input voltage acquisition circuit is connected with a fire wire end L2 and a zero wire end N2, and the output end of the second path of alternating current input voltage acquisition circuit is connected with the input end of the controller; the output end of the controller is connected with the input end of the relay switching selection circuit, and the output end of the relay switching selection circuit is connected with the live wire output end OUT-L and the zero wire output end OUT-N.

2. The dual ac selection switch circuit of claim 1, wherein: the relay switching selection circuit comprises a relay driving circuit and relays RY1, RY2, RY3 and RY4; the output end of the controller is connected with the input end of the relay driving circuit, and the output end of the relay driving circuit is connected with the coils of the relays RY1, RY2, RY3 and RY4; the contact of the relay RY1 is connected between the live wire end L1 and the live wire output end OUT-L, the contact of the relay RY2 is connected between the zero line end N1 and the zero line output end OUT-N, the contact of the relay RY3 is connected between the live wire end L2 and the live wire output end OUT-L, and the contact of the relay RY4 is connected between the zero line end N2 and the zero line output end OUT-N.

3. The dual ac selection switch circuit of claim 1, wherein: the first path of alternating current input voltage acquisition circuit comprises resistors R1, R2 and R3, a capacitor C1 and an optocoupler U1; the resistor R3 and the capacitor C1 are connected in parallel between a No. 2 pin and a No. 3 pin of the optocoupler U1, one end of the resistor R1 is connected with the fire wire end L1, the other end of the resistor R1 is connected with the No. 2 pin of the optocoupler U1, one end of the resistor R2 is connected with the No. 1 pin, and the other end of the resistor R2 is connected with the No. 3 pin of the optocoupler U1; and the 6 th pin and the 7 th pin of the optocoupler U1 are connected with the controller.

4. The dual ac selection switch circuit of claim 1, wherein: the second path of alternating current input voltage acquisition circuit comprises resistors R4, R5 and R6, a capacitor C2 and an optocoupler U2; the resistor R5 and the capacitor C2 are connected in parallel between a No. 2 pin and a No. 3 pin of the optocoupler U2, one end of the resistor R4 is connected with the zero line end N2, the other end of the resistor R4 is connected with a No. 2 pin of the optocoupler U2, one end of the resistor R5 is connected with the fire line end L2, and the other end of the resistor R5 is connected with a No. 3 pin of the optocoupler U2; and the 6 th pin and the 7 th pin of the optocoupler U2 are connected with the controller.