CN218414407U

CN218414407U - Relay control circuit

Info

Publication number: CN218414407U
Application number: CN202222448855.3U
Authority: CN
Inventors: 康稷浩; 康望才
Original assignee: Hunan Hankun Industrial Co ltd
Current assignee: Hunan Hankun Industrial Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-31
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a relay control circuit, including microcontroller module and the relay drive module who is connected with microcontroller module electricity, relay drive module includes relay driver chip, a plurality of relays of being connected with each output pin electricity of relay driver chip and a plurality of binding post of being connected with the output difference electricity of a plurality of relays. The utility model provides a relay control circuit, adopt a relay drive module to drive a plurality of relay actions, can carry out the on-off control of multichannel equipment, circuit structure is simple, the cost of manufacture is low; the application is wide and the universality is strong; and the mode of the wiring terminal is adopted, so that the installation and the maintenance are convenient.

Description

Relay control circuit

Technical Field

The utility model relates to an electrical control technical field especially discloses a relay control circuit.

Background

The relay is an automatic switch element with an isolation function, is widely applied to remote control, communication, automatic control, electromechanical integration and power electronic equipment, and is an important control element. However, the existing relay control circuit is generally applied to a specific field, and has narrow application and poor universality.

Therefore, the conventional relay control circuit is generally applied to a specific field, has narrow application and poor universality, and is a technical problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a relay control circuit aims at solving current relay control circuit and generally uses in specific field, the technical problem that the usage is narrower, the commonality is poor.

The utility model relates to a relay control circuit, including microcontroller module and the relay drive module who is connected with microcontroller module electricity, relay drive module includes relay driver chip, a plurality of relays of being connected with relay driver chip's each output pin electricity and a plurality of binding post of being connected with the output difference electricity of a plurality of relays.

Furthermore, the input end of the relay is provided with a light emitting diode and a current limiting resistor electrically connected with the light emitting diode.

Furthermore, a diode is arranged at the input end of the relay, the negative level of the diode is electrically connected with the positive input pin of the relay, and the positive level of the diode is electrically connected with the negative input pin of the relay.

Further, the microcontroller module comprises a microcontroller chip, the model of which is STM32F4072ZGT6.

Further, the model of the relay driving chip is ULN2003D1013TR.

Further, the model of the relay is HK3FF-DC5V-SHG.

Further, the relay control circuit further comprises a power supply module, and the power supply module is electrically connected with the microcontroller module, the relay driving chip and the relay respectively.

Further, the power supply module comprises a first power supply module and a second power supply module.

Furthermore, the first power supply module is a circuit for converting 24V direct-current voltage input into 5V direct-current voltage output; the second power supply module is a circuit for converting 5V direct-current voltage output into 3.3V direct-current voltage output.

Further, the first power supply module comprises a voltage stabilizing chip, and the model of the voltage stabilizing chip is VRB2405YMD-6WR3.

The utility model discloses the beneficial effect who gains does:

the utility model provides a relay control circuit adopts microcontroller module and the relay drive module who is connected with microcontroller module electricity, and relay drive module includes relay driver chip, a plurality of relays of being connected with relay driver chip's each output pin electricity and a plurality of binding post of being connected with the output difference electricity of a plurality of relays. The utility model provides a relay control circuit, adopt a relay drive module to drive a plurality of relay actions, can carry out the on-off control of multichannel equipment, circuit structure is simple, the cost of manufacture is low; the application is wide and the universality is strong; and the mode of the wiring terminal is adopted, so that the installation and the maintenance are convenient.

Drawings

Fig. 1 is a functional block diagram of an embodiment of a relay control circuit provided by the present invention;

FIG. 2 is a schematic circuit diagram of one embodiment of the microcontroller module shown in FIG. 1;

FIG. 3 is a schematic diagram of a circuit of an embodiment of a relay driver chip of the relay driver module shown in FIG. 1;

fig. 4 is a schematic circuit diagram of an embodiment of the relay and the terminal of the relay drive module shown in fig. 1.

The reference numbers indicate:

10. a microcontroller module; 20. and a relay driving module.

Detailed Description

In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings of the specification and specific embodiments.

As shown in fig. 1 to 4, the utility model discloses a first embodiment provides a relay control circuit, including microcontroller module 10 and the relay drive module 20 of being connected with microcontroller module 10 electricity, relay drive module 20 includes relay drive chip U78, a plurality of relays J31 of being connected with each output pin electricity of relay drive chip U78 and a plurality of binding post J23 of being connected with a plurality of relays J31's output difference electricity. In the present embodiment, the microcontroller module 10 and the relay driver module may employ existing functional modules. The microcontroller module 10 includes a microcontroller chip U7, and the model number adopted by the microcontroller chip U7 is STM32F4072ZGT6. The model number adopted by the relay driving chip U78 is ULN2003D1013TR. ULN2003D1013TR is a high voltage, high current darlington array, each containing 7 open-collector darlington pairs, common emitter; suitable for use in relay drivers, motor drivers, lamp drivers, display drivers, line drivers and logic buffers. The relay is of a type HK3FF-DC5V-SHG. HK3FF-DC5V-SHG is a power relay, 10A contact switching capability; the switch has a normally open set and a switching contact set; subminiature, standard printing plate-making pin-outs; the packaging method has two packaging modes of plastic packaging and solder mask. The terminal J23 is of the type C581322.

In the above structure, referring to fig. 1 to fig. 4, in the relay control circuit provided in this embodiment, the input end of the relay J31 is provided with a light emitting diode LED9 and a current limiting resistor R282 electrically connected to the light emitting diode LED 9. The input end of the relay J31 is provided with a diode D24, the negative pole of the diode D24 is electrically connected with the positive pole input pin V + of the relay J31, and the positive pole of the diode D24 is electrically connected with the negative pole input pin V-of the relay J31. In this embodiment, the LED9 is used for light indication when the relay J31 is in operation. The reverse diode D24 is used for protecting the relay J31 and preventing the relay J31 from being burnt out due to reverse connection of the power supply.

Preferably, referring to fig. 1 to 4, in the relay control circuit provided in this embodiment, the relay control circuit further includes a power supply module, and the power supply module is electrically connected to the microcontroller module 10, the relay driver chip U78 and the relay J31, respectively. Specifically, the power supply module comprises a first power supply module and a second power supply module. The first power supply module adopts a circuit for converting 24V direct-current voltage input into 5V direct-current voltage output; the second power supply module adopts a circuit for converting 5V direct-current voltage output into 3.3V direct-current voltage output. The first power supply module comprises a voltage stabilizing chip, and the voltage stabilizing chip is VRB2405YMD-6WR3.VRB2405YMD-6WR3 is a DC-DC isolation power supply module, and the single-path output is realized by converting 24V into 5V. In this embodiment, the first power supply module and the second power supply module are respectively adopted to provide normal operating voltages for the microcontroller module 10, the relay driver chip U78 and the relay J31.

As shown in fig. 1 to fig. 4, the relay control circuit provided in this embodiment has the following operating principle:

microcontroller chip U7 control microcontroller module 10 action, and microcontroller chip U7's output is connected with relay driver chip U78's input electricity, and relay driver chip U78 drives a plurality of relay J31 actions to carry out control signal's output from the corresponding binding post J23 of relay J31 output, in order to open and stop corresponding equipment.

This embodiment provides a relay control circuit, compares with prior art, adopts microcontroller module and the relay drive module who is connected with microcontroller module electricity, and relay drive module includes relay driver chip, a plurality of relays that are connected with each output pin electricity of relay driver chip and a plurality of binding post that are connected with the output difference electricity of a plurality of relays. The relay control circuit provided by the embodiment adopts one relay driving module to drive a plurality of relays to act, can perform on-off control on multi-path equipment, and has the advantages of simple circuit structure and low manufacturing cost; the application is wide and the universality is strong; and the mode of the wiring terminal is adopted, so that the installation and the maintenance are convenient.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a relay control circuit, including microcontroller module (10) and with relay drive module (20) that microcontroller module (10) electricity is connected, its characterized in that, relay drive module (20) include relay driver chip, with a plurality of relays that each output pin electricity of relay driver chip is connected and with a plurality of binding post that the output of relay is connected electrically respectively.

2. The relay control circuit according to claim 1, wherein the input terminal of the relay is provided with a light emitting diode and a current limiting resistor electrically connected to the light emitting diode.

3. The relay control circuit of claim 1, wherein the input terminal of the relay is provided with a diode, a negative stage of the diode is electrically connected with a positive input pin of the relay, and a positive stage of the diode is electrically connected with a negative input pin of the relay.

4. Relay control circuit according to claim 1, characterized in that the microcontroller module (10) comprises a microcontroller chip of the type STM32F4072ZGT6.

5. The relay control circuit according to claim 1, wherein the relay driver chip is of a type ULN2003D1013TR.

6. The relay control circuit of claim 1, wherein the relay is of a model number HK3FF-DC5V-SHG.

7. The relay control circuit according to claim 1, further comprising a power supply module electrically connected to the microcontroller module (10), the relay driver chip, and the relay, respectively.

8. The relay control circuit of claim 7, wherein the power supply modules comprise a first power supply module and a second power supply module.

9. The relay control circuit of claim 8, wherein the first power supply module is a 24V dc input to 5V dc output circuit; and the second power supply module is a circuit for converting 5V direct-current voltage output into 3.3V direct-current voltage output.

10. The relay control circuit of claim 8, wherein the first power supply module comprises a voltage regulation chip having a model number VRB2405YMD-6WR3.