Multipurpose relay control circuit

Abstract

The utility model provides a multipurpose relay control circuit. The multipurpose relay control circuit comprises a first switching circuit formed by a first relay, a second switching circuit formed by a second relay, and a load circuit. A grounding end contact of the first switching circuit is electrically connected with a grounding end contact of the second switching circuit; the load circuit comprises a load wiring terminal with three interfaces, and the three interfaces are grounded through capacitors respectively; the output ends of the first switching circuit and the second switching circuit are respectively connected to a first interface of a load wiring terminal through a diode; the output end of the first switching circuit is also connected with a second interface of the load wiring terminal; the output end of the second switching circuit is also connected with a third interface of the load wiring terminal; capacitors are connected between the output ends of the two switching circuits and the contacts of the second interface and the third interface of the load wiring terminal respectively. The multipurpose relay control circuit has the advantages of being uniform in design specification and capable of meeting multipurpose requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of control circuit design, in particular to a multi-purpose relay control circuit. Background Art

[0002] In some simple control circuit designs, there are usually multiple control requirements. Development designers often design appropriate circuit structures in a targeted manner, and then integrate various control requirements into multiple modules, integrate them into a circuit board, and then realize control integration of different functions. It is then handed over to the circuit board manufacturer for development and manufacturing, with a high degree of customization.

[0003] This solution is very suitable for the development and manufacturing of large-scale, single-category goods, and can spread the development costs through large-scale manufacturing.

[0004] However, with the continuous innovation of people's demand for highly customized products, some highly customized products have entered the consumer market. In the past, when the demand was not high, the specifications of the main core control modules would generally be unified, and then other circuit modules would be welded using lines, functional devices and general-purpose circuit boards. The quality of the relatively uniformly produced products was reduced, which conflicted with the highly customized quality requirements.

[0005] Relay control circuit is also one of the most common circuits in control circuit design. In order to solve the above problems, it is an important issue that the industry needs to solve to provide a multi-purpose relay control circuit that can cope with various control needs and avoid developers' temporary procurement of general welding and manufacturing, thereby improving product quality.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0007] The utility model aims to address the deficiencies of the prior art and thus provide a multi-purpose relay control circuit with unified design specifications and capable of meeting multi-purpose requirements.

[0008] In order to achieve the above object, the technical solution adopted by the utility model is: a multi-purpose relay control circuit, including a first switch circuit composed of a first relay, a second switch circuit composed of a second relay, and a load circuit;

[0009] The ground terminal contact of the first switch circuit is electrically connected to the ground terminal contact of the second switch circuit;

[0010] The load circuit comprises a load terminal having three interfaces, and the three interfaces are grounded through capacitors respectively;

[0011] The output ends of the first switch circuit and the second switch circuit are respectively connected to the first interface of the load terminal through a diode;

[0012] The output end of the first switch circuit is also connected to the second interface of the load terminal;

[0013] The output end of the second switch circuit is also connected to the third interface of the load terminal;

[0014] Capacitors are connected between the output ends of the two switch circuits and the contacts of the second and third interfaces of the load connection terminals, respectively.

[0015] Based on the above, the first interface of the load-end wiring terminal is connected to an LED lamp.

[0016] Based on the above, the models of the first relay and the second relay are both 1N4148.

[0017] Based on the above, the model of the diode is 1N4007.

[0018] Based on the above, a resistor of 5KΩ to 10KΩ is connected between the first interface of the load-end wiring terminal and the LED lamp.

[0019] Based on the above, the voltage at the power terminals of the first switch circuit and the second switch circuit is 24V-36V.

[0020] A multi-purpose relay control circuit comprises a circuit board and a plurality of circuit control modules with the same specifications and independent of each other, each of the circuit control modules comprises a first switch circuit formed by a first relay, a second switch circuit formed by a second relay, and a load circuit;

[0021] The ground terminal contact of the first switch circuit is electrically connected to the ground terminal contact of the second switch circuit;

[0022] The load circuit comprises a load terminal having three interfaces, and the three interfaces are grounded through capacitors respectively;

[0023] The output ends of the first switch circuit and the second switch circuit are respectively connected to the first interface of the load terminal through a diode;

[0024] The output end of the first switch circuit is also connected to the second interface of the load terminal;

[0025] The output end of the second switch circuit is also connected to the third interface of the load terminal;

[0026] Capacitors are connected between the output ends of the two switch circuits and the contacts of the second and third interfaces of the load connection terminals, respectively.

[0027] Based on the above, the first interface of the load-end wiring terminal is connected to an LED lamp; and a resistor of 5KΩ to 10KΩ is connected between the first interface of the load-end wiring terminal and the LED lamp.

[0028] Based on the above, the models of the first relay and the second relay are both 1N4148, and the model of the diode is 1N4007.

[0029] Based on the above, the voltage at the power terminals of the first switch circuit and the second switch circuit is 24V-36V.

[0030] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0031] 1. The circuit designed in the present application is multi-purpose. Different control logics can be realized according to the different connection methods of the three interfaces of the load terminal. For example, when the three interfaces are respectively connected to the gas circuit solenoid valves, the inflation and deflation control can be realized. When two interfaces are connected to the DC motor, the forward and reverse control of the motor can be realized. When the three interfaces are connected to independent switches, the opening and closing control of multiple switches can be realized. It can adapt to the control requirements of most of the current load-end devices with two states, realize the modularization of multi-purpose circuits, and thus avoid the safety problems caused by temporary welding.

[0032] 2. Integrating multiple circuit control modules into one circuit board can connect more loads and achieve integrated control. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a circuit schematic diagram of a switch circuit of a multi-purpose relay control circuit in Example 1 of the utility model.

[0034] Figure 2 It is a circuit schematic diagram of the load circuit of the multi-purpose relay control circuit in Example 1 of the utility model.

[0035] Figure 3 It is a circuit schematic diagram of a multi-purpose relay control circuit in Example 4 of the utility model. DETAILED DESCRIPTION

[0036] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0037] Example 1

[0038] like Figure 1 and Figure 2 As shown, the circuit structure is described by taking the charging and discharging circuit as an example.

[0039] A multi-purpose relay control circuit comprises a first switch circuit formed by a first relay K1, a second switch circuit formed by a second relay K2 and a load circuit.

[0040] In this embodiment, the models of the first relay K1 and the second relay K2 are both G5LE-14 24V DC.

[0041] The grounding contact 2 of the first switch circuit K1 is electrically connected to the grounding contact 2 of the second switch circuit K2 and then grounded.

[0042] The load circuit includes a load connection terminal P11 having three interfaces, and the three interfaces are grounded through capacitors C1, C2 and C3 respectively to improve safety.

[0043] The contact 1 of the first switch circuit K1 and the second switch circuit K2 are connected to the first interface of the load terminal through the diode D3 and the diode D4 respectively. The model of the diode D3 and the diode D4 is 1N4007.

[0044] The contact 1 of the first switch circuit K1 is also connected to the second interface of the load terminal P11;

[0045] The contact 1 of the second switch circuit K2 is also connected to the third interface of the load terminal P11;

[0046] A capacitor C4 is connected between the contacts 1 of the two switch circuits K1 and K2 and the contacts of the second and third interfaces of the load connection terminal P11 respectively, so as to ensure the safety between the two interfaces.

[0047] The first interface of the load-end terminal P11 is connected to an LED lamp, which is grounded to achieve signal indication. A resistor of 5KΩ to 10KΩ is connected between the first interface of the load-end terminal and the LED lamp, and the size of the resistor is mainly determined by the specifications and voltage specifications of the LED lamp.

[0048] In this embodiment, the voltage of the power terminals of the first switch circuit K1 and the second switch circuit K2 is 24V-36V to meet the power requirements of most small electrical appliances.

[0049] Brief description of working principle:

[0050] In this embodiment, the first interface of the load terminal P11 is connected to the power supply end of the inflation device, the second interface is connected to the inflation end solenoid valve, and the third interface is connected to the deflation end solenoid valve. When only the first switch circuit K1 is closed and energized, the inflation end solenoid valve opens and inflation begins. When only the second switch circuit K2 is closed and energized, the deflation end solenoid valve opens and deflation begins.

[0051] Example 2

[0052] The main difference between this embodiment and embodiment 1 is that:

[0053] The second interface of the load terminal P11 is connected to the positive end of the DC motor, and the third interface is connected to the negative end of the DC motor. When the switch circuit K1 is closed and energized, the DC motor rotates forward. When the switch circuit K2 is closed and energized, the DC motor reverses. When the switch circuits K1 and K2 are both opened or closed, the DC motor stops.

[0054] Example 3

[0055] The difference between this embodiment and embodiments 1 and 2 is that:

[0056] Only the second and third interfaces of the load terminal P11 are enabled, which are respectively connected to external control lights. The on-off switch circuit K1 can control the on-off of the control light connected to the second interface, and the on-off switch circuit K2 can control the on-off of the control light connected to the third interface.

[0057] In other embodiments, other loads having a single operating state, such as a switch, or two operating states, such as forward and reverse operation, or commutation, etc., can also be controlled.

[0058] Example 4

[0059] like Figure 3 As shown, a multi-purpose relay control circuit includes a circuit board and a plurality of circuit control modules with the same specifications and independent of each other, each of the circuit control modules includes a first switch circuit formed by a first relay, a second switch circuit formed by a second relay, and a load circuit;

[0060] The ground terminal contact of the first switch circuit is electrically connected to the ground terminal contact of the second switch circuit;

[0061] The load circuit comprises a load terminal having three interfaces, and the three interfaces are grounded through capacitors respectively;

[0062] The contacts 1 of the first switch circuit and the second switch circuit are respectively connected to the first interface of the load terminal through a diode; the models of the first relay and the second relay are both G5LE-14 24V DC, and the model of the diode is 1N4007.

[0063] The contact 1 of the first switch circuit is also connected to the second interface of the load terminal;

[0064] The contact 1 of the second switch circuit is also connected to the third interface of the load terminal;

[0065] Capacitors are connected between the contacts 1 of the two switch circuits and the contacts of the second and third interfaces of the load connecting terminals, respectively.

[0066] The first interface of the load-end wiring terminal is connected to an LED lamp; a resistor of 5KΩ to 10KΩ is connected between the first interface of the load-end wiring terminal and the LED lamp.

[0067] The voltage at the power terminals of the first switch circuit and the second switch circuit is 24V-36V.

[0068] In this embodiment, a plurality of power supply terminals for supplying power to each relay are arranged on the periphery of the circuit board, which are used to connect different load ends, so as to realize integrated control of multiple load ends through a single control circuit.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A multi-purpose relay control circuit, characterized in that: comprising a first switch circuit formed by a first relay, a second switch circuit formed by a second relay, and a load circuit; The ground terminal contact of the first switch circuit is electrically connected to the ground terminal contact of the second switch circuit; The load circuit comprises a load terminal having three interfaces, and the three interfaces are grounded through capacitors respectively; The output ends of the first switch circuit and the second switch circuit are respectively connected to the first interface of the load terminal through a diode; The output end of the first switch circuit is also connected to the second interface of the load terminal; The output end of the second switch circuit is also connected to the third interface of the load terminal; Capacitors are connected between the output ends of the two switch circuits and the contacts of the second and third interfaces of the load connection terminals, respectively.

2. The multi-purpose relay control circuit according to claim 1, characterized in that: The first interface of the load terminal is connected with an LED lamp.

3. The multi-purpose relay control circuit according to claim 1 or 2, characterized in that: The first relay and the second relay are both 1N4148.

4. The multi-purpose relay control circuit according to claim 1 or 2, characterized in that: The model of the diode is 1N4007.

5. The multi-purpose relay control circuit according to claim 2, characterized in that: A resistor of 5KΩ to 10KΩ is connected between the first interface of the load wiring terminal and the LED lamp.

6. The multi-purpose relay control circuit according to claim 1 or 2, characterized in that: The voltage at the power terminals of the first switch circuit and the second switch circuit is 24V-36V.

7. A multi-purpose relay control circuit, characterized in that: It includes a circuit board and a plurality of circuit control modules with the same specifications and independent of each other, each of the circuit control modules includes a first switch circuit formed by a first relay, a second switch circuit formed by a second relay, and a load circuit; The ground terminal contact of the first switch circuit is electrically connected to the ground terminal contact of the second switch circuit; The load circuit comprises a load terminal having three interfaces, and the three interfaces are grounded through capacitors respectively; The output ends of the first switch circuit and the second switch circuit are respectively connected to the first interface of the load terminal through a diode; The output end of the first switch circuit is also connected to the second interface of the load terminal; The output end of the second switch circuit is also connected to the third interface of the load terminal; Capacitors are connected between the output ends of the two switch circuits and the contacts of the second and third interfaces of the load connection terminals, respectively.

8. The multi-purpose relay control circuit according to claim 7, characterized in that: The first interface of the load wiring terminal is connected to an LED lamp; a resistor of 5KΩ to 10KΩ is connected between the first interface of the load wiring terminal and the LED lamp.

9. The multi-purpose relay control circuit according to claim 7 or 8, characterized in that: The models of the first relay and the second relay are both 1N4148, and the model of the diode is 1N4007.

10. The multi-purpose relay control circuit according to claim 7 or 8, characterized in that: The voltage at the power terminals of the first switch circuit and the second switch circuit is 24V-36V.

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