CN217769462U

CN217769462U - Electric buffering protection circuit on equipment

Info

Publication number: CN217769462U
Application number: CN202221256168.5U
Authority: CN
Inventors: 徐厚盛; 徐钊霖; 黎兵兵; 徐乐; 李美; 徐震; 付莲莲
Original assignee: Shenzhen Yitong Information Technology Co ltd
Current assignee: Shenzhen Yitong Information Technology Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-11-08
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses an electric buffering protection circuit on equipment relates to circuit protection technical field, the utility model discloses a main control circuit, power supply circuit, voltage acquisition circuit, switch circuit, buffer circuit and detection circuitry, main control circuit respectively with detection circuitry's sense terminal and power supply circuit electric connection, detection circuitry is connected with power supply circuit's output, voltage acquisition circuit and buffer circuit electric connection, switch circuit's signal output part and main control circuit are connected, switch circuit's signal input part and buffer circuit are connected. The utility model discloses based on main control circuit is as main control end, when equipment circular telegram, at first carries out voltage acquisition, and cooperation detection circuitry carries out real-time detection, and when detecting voltage data anomaly, the main control circuit formation drive is utilized to the buffer circuit trigger switch circuit, carries out power-off protection to equipment, and this circuit performance is stable, and the continuity is strong, and the controllability is strong.

Description

Electric buffering protection circuit on equipment

Technical Field

The utility model relates to a circuit protection technical field, in particular to electric buffering protection circuit on equipment.

Background

The electric equipment is equipment using electricity as an energy source, the electric equipment is one of the components of an electric power system, and in the use of daily electric equipment, the instantaneous current is much larger than that under the normal working condition at the moment of opening a switch under the condition of unchanging an external voltage, so that a circuit of the equipment is easily short-circuited or damaged, and a circuit protection structure is needed for protection; at present, the design of the circuit protection structure is incomplete, the stability of equipment use is influenced, and the controllability is insufficient. To this end, we propose a power-on buffer protection circuit for a device.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide an electric buffering protection circuit on equipment to solve the problem that provides in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an electric buffering protection circuit on equipment, includes main control circuit, power supply circuit, voltage acquisition circuit, switch circuit, buffer circuit and detection circuitry, main control circuit respectively with detection circuitry's sense terminal and power supply circuit electric connection, detection circuitry is connected with power supply circuit's output, voltage acquisition circuit and buffer circuit electric connection, switch circuit's signal output part and main control circuit are connected, switch circuit's signal input part and buffer circuit are connected.

The main control circuit comprises a microcontroller, the microcontroller comprises an A/D conversion interface, and the A/D conversion interface is connected with the output end of the detection circuit; the voltage acquisition circuit comprises two resistors which are connected in series, a first resistor in the two resistors is connected with the power circuit, and a second resistor in the two resistors is connected with the isolation circuit.

The switch circuit comprises a driving circuit and a relay, the driving end of the driving circuit is connected with a coil of the relay, the driving circuit is a triode, the relay comprises two contacts, a first contact of the relay is connected with the driving circuit, and a second contact of the relay is connected with the main control circuit.

The isolation circuit is an optical coupler, the input end of the isolation circuit is connected with the main control circuit, and the output end of the isolation circuit is connected with the switch circuit; the detection circuits are provided with a plurality of groups according to the number of the equipment use terminals, and the detection ends of the main control circuit are respectively connected with a group of detection circuits.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses electric buffering protection circuit on equipment, based on main control circuit as the main control end, during the equipment circular telegram, at first carry out voltage acquisition, cooperation detection circuitry carries out real-time detection, when detecting voltage data anomaly, the isolator circuit trigger switch circuit utilizes main control circuit to form the drive, carries out the outage protection to equipment, the simple operation, the stable performance, the continuity is strong, controllability and adaptability are strengthened in step.

Drawings

Fig. 1 is a schematic circuit diagram of an electric buffer protection circuit on the device of the present invention;

fig. 2 is another schematic circuit diagram of the electric buffer protection circuit on the device of the present invention.

In the figure: 1. a main control circuit; 2. a power supply circuit; 3. a voltage acquisition circuit; 4. a switching circuit; 5. an isolation circuit; 6. a detection circuit.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1-2, the utility model relates to an electric buffer protection circuit on equipment, including main control circuit 1, power supply circuit 2, voltage acquisition circuit 3, switch circuit 4, isolating circuit 5 and detection circuit 6, main control circuit 1 respectively with detection circuit 6's detection end and power supply circuit 2 electric connection, detection circuit 6 is connected with power supply circuit 2's output, voltage acquisition circuit 3 and isolating circuit 5 electric connection, switch circuit 4's signal output part is connected with main control circuit 1, switch circuit 4's signal input part is connected with isolating circuit 5;

the main control circuit 1 comprises a microcontroller, the microcontroller comprises an A/D conversion interface, and the A/D conversion interface is connected with the output end of the detection circuit 6, so that the operation control of the circuit is facilitated, and the control effect is enhanced; the voltage acquisition circuit 3 comprises two resistors which are connected in series, a first resistor of the two resistors is connected with the power circuit 2, a second resistor of the two resistors is connected with the isolation circuit 5 to form a circuit series connection, and the operation control continuity is high; the switch circuit 4 comprises a driving circuit and a relay, the driving end of the driving circuit is connected with a coil of the relay, the driving circuit is a triode, the relay comprises two contacts, a first contact of the relay is connected with the driving circuit, a second contact of the relay is connected with the main control circuit, and the switch control protection effect of the circuit is enhanced; the isolation circuit 5 is an optical coupler, the input end of the isolation circuit 5 is connected with the main control circuit 1, the output end of the isolation circuit 5 is connected with the switch circuit 4, and the optical coupler has the advantages of small volume, long service life, no contact, strong anti-interference capability, insulation between output and input, unidirectional signal transmission and the like; the detection circuits 6 are provided with a plurality of groups according to the number of the equipment use terminals, the detection end of the main control circuit 1 is connected with one group of detection circuits 6 respectively, multi-path lines are formed and simultaneously detected, and the operation efficiency is improved.

It should be noted that, the utility model discloses a power-on buffering protection circuit on equipment, utilize main control circuit 1 as the main control end of power-on buffering protection on equipment, main control circuit 1 includes microcontroller, microcontroller includes AD conversion interface, AD conversion interface is connected with detection circuitry 6's output, main control circuit 1 respectively with detection circuitry 6's detection end and power supply circuit 2 electric connection, detection circuitry 6 is connected with power supply circuit 2's output, voltage acquisition circuit 3 and isolator circuit 5 electric connection, voltage acquisition circuit 3 is including two resistances, two resistances are established ties, first resistance is connected with power supply circuit 2 in two resistances, second resistance is connected with isolator circuit 5 in two resistances, switch circuit 4's signal output part is connected with main control circuit 1, switch circuit 4 includes drive circuit and relay, drive circuit's drive end and the coil connection of relay, drive circuit is the triode, the relay is including two contacts, the first contact of relay is connected with drive circuit, the second contact of relay is connected with main control circuit 1, switch circuit 4's signal input part is connected with isolator circuit 5, isolator circuit 5 is the optical coupler, isolator circuit 5 is the input part and isolator circuit 5, the input part of power-on circuit is connected with isolator circuit 5, the buffer circuit connection of buffer circuit, the output part of buffer circuit is connected with the device, the output part of buffer circuit 1, the buffer circuit.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An on-device power-on buffer protection circuit, characterized in that: including main control circuit, power supply circuit, voltage acquisition circuit, switch circuit, buffer circuit and detection circuitry, main control circuit respectively with detection circuitry's sense terminal and power supply circuit electric connection, detection circuitry is connected with power supply circuit's output, voltage acquisition circuit and buffer circuit electric connection, switch circuit's signal output part and main control circuit are connected, switch circuit's signal input part and buffer circuit are connected.

2. A power-on buffer protection circuit on a device according to claim 1, wherein: the main control circuit comprises a microcontroller, the microcontroller comprises an A/D conversion interface, and the A/D conversion interface is connected with the output end of the detection circuit.

3. A power-on buffer protection circuit on a device according to claim 1, wherein: the voltage acquisition circuit comprises two resistors which are connected in series, a first resistor of the two resistors is connected with the power circuit, and a second resistor of the two resistors is connected with the isolation circuit.

4. The power-on buffer protection circuit of claim 1, wherein: the switch circuit comprises a driving circuit and a relay, the driving end of the driving circuit is connected with a coil of the relay, the driving circuit is a triode, the relay comprises two contacts, a first contact of the relay is connected with the driving circuit, and a second contact of the relay is connected with the main control circuit.

5. The power-on buffer protection circuit of claim 1, wherein: the isolation circuit is an optical coupler, the input end of the isolation circuit is connected with the main control circuit, and the output end of the isolation circuit is connected with the switch circuit.

6. A power-on buffer protection circuit on a device according to claim 1, wherein: the detection circuits are provided with a plurality of groups according to the number of the equipment use terminals, and the detection ends of the main control circuit are respectively connected with a group of detection circuits.