Circuit for realizing full-automatic control by using relay group

Abstract

The utility model relates to a circuit for realizing full-automatic control by using a relay group, which comprises a first relay, a second relay, a third relay, a switch-on line group, a switch-off line group, an output driving line, a power supply positive electrode and a power supply negative electrode which are connected with one another, and the first relay, the second relay and the third relay are respectively provided with a first terminal, a second terminal and a fifth terminal. According to the circuit for realizing full-automatic control by utilizing the relay group, the control characteristic of the relays is fully utilized, and the three relays are combined, so that the functions of switching on and switching off a large-current circuit by using a low-current control signal are realized, and meanwhile, the circuit can keep self-locking after receiving an instant switching-on signal or a switching-off signal; and the received signal is executed all the time until the other signal is triggered and then the other execution state is switched, so that the device can be widely applied to occasions of automatic filling, automatic operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a circuit which realizes full-automatic control by utilizing a relay group. Background Art

[0002] Relays are generally used alone to enable low-current circuits to control high-current circuits, but a single relay cannot achieve the functions of self-locking, automatic connection and disconnection, so its use is relatively limited. Utility Model Content

[0003] In view of the above problems, the utility model proposes a circuit which can realize self-locking, automatic opening and closing and realizes full-automatic control by using a relay group.

[0004] The utility model is realized through the following technical solutions:

[0005] The utility model provides a circuit for realizing full-automatic control by using a relay group, comprising a first relay, a second relay, a third relay, a connection line group, a disconnection line group, an output drive line, a positive power supply electrode and a negative power supply electrode, wherein the first relay, the second relay and the third relay respectively have terminals No. 1 to No. 5;

[0006] Among them, the connection line group is connected to terminal No. 1 of the second relay, the disconnection line group is connected to terminal No. 3 of the third relay, terminal No. 3 of the first relay and terminal No. 2 of the third relay are connected through a bridge line group, the output drive line is respectively connected to terminal No. 4 of the first relay, terminal No. 4 of the second relay and terminal No. 1 of the first relay, the positive pole of the power supply is respectively connected to terminal No. 5 of the first relay and terminal No. 5 of the second relay, the lead wire serves as the power supply of the input signal, and the negative pole of the power supply is respectively connected to terminal No. 3 of the second relay, terminal No. 1 of the third relay and terminal No. 5 of the third relay.

[0007] In a preferred embodiment of the present invention, the No. 1 terminal and the No. 3 terminal are control terminals, the No. 2 terminal is a normally closed terminal, the No. 4 terminal is a normally open terminal, and the No. 5 terminal is a power terminal.

[0008] In order to ensure the safety of the circuit, a fuse box is arranged on the lead of the positive electrode of the power supply.

[0009] The beneficial effects of the utility model are as follows: the circuit which realizes full-automatic control by utilizing the relay group fully utilizes the characteristics of the relay control through the combination of three relays, and realizes the function of connecting and disconnecting the large current circuit by using the control signal of low current. At the same time, the circuit can also maintain the self-locking of the circuit after receiving the instantaneous connection signal or the disconnection signal, and executes the received signal all the time until another signal is triggered and then switches to another execution state. The utility model can be widely used in occasions such as automatic filling and automatic operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of a circuit for realizing full-automatic control using a relay group according to the utility model;

[0011] Figure 2 This is a schematic diagram of terminals 1-5 of the first relay, the second relay, or the third relay of the utility model. DETAILED DESCRIPTION

[0012] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0013] like Figure 1 The circuit shown in the figure uses a relay group to realize full automatic control, including a first relay 6, a second relay 7, a third relay 8, a connection line group, a disconnection line group, an output drive line, a positive power supply and a negative power supply, wherein the first relay 6, the second relay 7, and the third relay 8 have the same structure, and have terminals 1-5 respectively, combined with Figure 2 As shown, in the first relay, the second relay or the third relay, terminal 1 and terminal 3 are both control terminals, terminal 2 is a normally closed terminal, terminal 4 is a normally open terminal, and terminal 5 is a power terminal;

[0014] Specifically, the connection line group is connected to terminal No. 1 of the second relay 7, the disconnection line group is connected to terminal No. 3 of the third relay 7, terminal No. 3 of the first relay 6 and terminal No. 2 of the third relay 8 are connected through a bridge line group, the output drive line is respectively connected to terminal No. 4 of the first relay 6, terminal No. 4 of the second relay 7 and terminal No. 1 of the first relay 6, the positive pole of the power supply is respectively connected to terminal No. 5 of the first relay 6 and terminal No. 5 of the second relay 7, the lead wire serves as the power supply of the input signal, a fuse box 9 is arranged on the lead wire of the positive pole of the power supply, and the negative pole of the power supply is respectively connected to terminal No. 3 of the second relay 7, terminal No. 1 of the third relay 8 and terminal No. 5 of the third relay 8.

[0015] When the input signal end is connected to the line group and energized, the No. 1 terminal and the No. 3 terminal of the second relay form a loop, and the second relay works at this time, turning on the No. 4 resistor and the No. 5 terminal of the second relay, and the No. 1 terminal and the No. 4 terminal of the first relay are both at the same potential. At the same time, after the No. 1 terminal of the first relay is energized, it also forms a loop with the bridge line group (the No. 2 terminal of the third relay is a normally closed terminal, and is connected to the No. 5 terminal of the third relay. Because the No. 5 terminal of the third relay is connected to the negative pole of the power supply, the No. 2 terminal of the third relay is also the negative pole, so the No. 3 terminal of the first relay is connected to the negative pole of the power supply). At this time, the first relay also works, and the No. 4 terminal and the No. 5 terminal of the first relay are also connected. Under the condition that the first relay itself turns on the No. 4 terminal and the No. 5 terminal, the No. 1 terminal voltage is applied to the first relay itself, which can keep the working state of the first relay for a long time. At this time, even if there is no potential signal in the connection line group, the connection signal will not affect the normal working state of the first relay. At this time, the driving line group can drive the electrical appliance for a long time;

[0016] In the driving state, when a potential signal is generated in the disconnection line group and input to terminal No. 3 of the third relay, a loop is formed with terminal No. 1 of the negative pole of the third relay, so that the third relay works. At this time, terminal No. 2 of the third relay will be disconnected from terminal No. 5 when the relay pulls the contact, so the bridge line group is disconnected from the negative pole of the power supply. Therefore, terminal No. 3 of the first relay is also disconnected from the negative pole of the power supply, and the first relay stops working, and terminals No. 4 and No. 5 of the first relay are disconnected. At this time, the driving line group is also disconnected from the power supply, and the electrical appliance stops working.

[0017] The utility model can be used in conjunction with a liquid level sensor and is widely used in filling fields such as refueling oil tanks and water tanks. It can also be used in conjunction with a travel trigger and is widely used in travel control fields such as automatic reciprocating on tracks and fixed-height lifting.

[0018] Finally, it should be noted that the above embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A circuit for realizing full automatic control by using a relay group, characterized in that: It includes a first relay, a second relay, a third relay, a connection line group, a disconnection line group, an output drive line, a positive power supply electrode and a negative power supply electrode, wherein the first relay, the second relay and the third relay respectively have terminals 1-5; The on-line group is connected to terminal No. 1 of the second relay, the off-line group is connected to terminal No. 3 of the third relay, terminal No. 3 of the first relay and terminal No. 2 of the third relay are connected through a bridge line group, the output drive line is respectively connected to terminal No. 4 of the first relay, terminal No. 4 of the second relay and terminal No. 1 of the first relay, the positive pole of the power supply is respectively connected to terminal No. 5 of the first relay and terminal No. 5 of the second relay, the lead wire serves as the power supply of the input signal, and the negative pole of the power supply is respectively connected to terminal No. 3 of the second relay, terminal No. 1 of the third relay and terminal No. 5 of the third relay.

2. The circuit for realizing full automatic control by using a relay group according to claim 1, characterized in that: Terminal No. 1 and Terminal No. 3 are control terminals, Terminal No. 2 is a normally closed terminal, Terminal No. 4 is a normally open terminal, and Terminal No. 5 is a power terminal.

3. The circuit for realizing full automatic control by using a relay group according to claim 2, characterized in that: A fuse box is arranged on the lead of the positive electrode of the power supply.

Images