A wireless remote power switch device with overload protection

Abstract

The utility model belongs to power switch device technical field, concretely relates to a wireless remote power switch device with overload protection for controlling whether the circuit load between zero line N and fire line L is electrified work, and power switch device includes transformer, electromagnetic relay switch, current sensor, power switch and control chip, transformer and circuit load are parallel on zero line N and fire line L and form respective loop, and current sensor is used for monitoring the current of circuit load loop, and control chip is parallel in transformer output interface end, and electromagnetic relay switch includes low voltage end and high voltage end, and electromagnetic relay switch low voltage end is parallel in transformer output interface end, and power switch is connected in series in electromagnetic relay switch low voltage end, and electromagnetic relay switch high voltage end is connected in series on circuit load. The utility model can efficiently protect the normal operation of high voltage circuit load, has the function of overload protection and remote control circuit load operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of power switch devices, specifically relating to a wireless remote power switch device with overload protection. Background Technology

[0002] During the normal operation of a load, a power switch device is needed to control whether the load in the control circuit is energized and working normally. However, existing power switches are simply traditional mechanical switches that manually control whether the load is energized and conducting. With the development of wireless communication, traditional mechanical switches can no longer meet the needs of IoT load circuits. Although there are existing technologies that disclose control switches based on wireless communication, they cannot monitor whether the load is overloaded in real time. Therefore, this utility model proposes a wireless remote power switch device with overload protection. When an overload occurs, the circuit is cut off in time, and multiple loads can also be remotely and wirelessly controlled to ensure that they are energized and working. Utility Model Content

[0003] The purpose of this invention is to provide a wireless remote power switch device with overload protection, which can efficiently protect the normal operation of high-voltage circuit loads and has the functions of overload protection and remote control of circuit load operation.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A wireless remote power switch device with overload protection is used to control whether the circuit load between the neutral wire N and the live wire L is energized. The power switch device includes a transformer, an electromagnetic relay switch, a current sensor, a power switch, and a control chip.

[0006] The transformer and the circuit load are connected in parallel on the neutral line N and the live line L to form their respective loops. The current sensor is used to monitor the current in the circuit load loop. The control chip is connected in parallel at the transformer output interface. The electromagnetic relay switch includes a low-voltage end and a high-voltage end. The low-voltage end of the electromagnetic relay switch is connected in parallel at the transformer output interface. The power switch is connected in series at the low-voltage end of the electromagnetic relay switch. The high-voltage end of the electromagnetic relay switch is connected in series with the circuit load.

[0007] Preferably, the voltage between the neutral wire N and the live wire L is 220V-360V; the voltage at the output interface of the transformer is 22V-36V.

[0008] Preferably, a 5G wireless transmission module is connected in parallel to the output interface of the transformer, and the current sensor, the power switch, and the 5G wireless transmission module are all communicatively connected to the control chip.

[0009] Preferably, a mechanical switch is provided at one output interface of the transformer.

[0010] Preferably, the transformer output interface is further connected in parallel with multiple sets of electromagnetic relay switches, and in conjunction with current sensors connected in series with multiple sets of circuit loads, the corresponding circuit loads are controlled to be powered on or not.

[0011] The control chip is communicatively connected to the current sensor in each group and to the power switch connected in series in each group to the low-voltage port of the electromagnetic relay switch.

[0012] Preferably, the low-voltage side of the electromagnetic relay switch includes a base plate, an insulating lever is hinged to the base plate, a spring is provided between one end of the insulating lever and the base plate, and a conductive end is provided at the other end of the insulating lever. The conductive end is compatible with the high-voltage side of the electromagnetic relay switch. A magnetic coil is installed on the base plate, a magnetic block is installed in the middle of the insulating lever, and the magnetic coil is connected in parallel to the transformer output interface through a power switch.

[0013] The technical effects achieved by this utility model are as follows:

[0014] In this invention, the control chip is an STM32 chip. The control chip acquires the current data from the current sensor, which is a Hall effect sensor. Other electrical components required in this embodiment, such as conversion circuits and amplifier circuits, are also adapted between the current sensor and the control chip. These will not be elaborated here. When the current reading acquired by the current sensor is greater than the circuit safety threshold, the control chip disconnects the power switch. At this time, the electromagnetic relay switch controls the circuit load to disconnect from the power supply, thereby playing a protective role.

[0015] In this invention, the low-voltage circuit controls whether the high-voltage circuit is energized, thereby improving the safety of the power switch; the 5G wireless transmission module is also used for wireless communication with the outside world and to send control signals to the control chip, ultimately achieving remote control. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connection structure of a wireless remote power switch device with overload protection according to this utility model.

[0017] Figure 2 This is a cross-sectional view of the electromagnetic relay switch in a wireless remote power switch device with overload protection according to this utility model.

[0018] Figure 3 This is a schematic diagram of the connection structure of the circuit load that is simultaneously connected in this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure of the current sensor of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Circuit load; 2. Transformer; 3. Electromagnetic relay switch; 4. Current sensor; 5. Power switch; 6. Control chip; 7. 5G wireless transmission module; 8. Mechanical switch; 301. Base plate; 302. Insulating lever; 303. Spring; 304. Conductive end; 305. Magnetic coil; 306. Magnetic block. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] like Figures 1-4 As shown, a wireless remote power switch device with overload protection is used to control whether the circuit load 1 between the neutral wire N and the live wire L is energized. The power switch device includes a transformer 2, an electromagnetic relay switch 3, a current sensor 4, a power switch 5, and a control chip 6.

[0024] In practical use, the control chip 6 of this invention uses an STM32 chip. The control chip 6 acquires the current data from the current sensor 4. The current sensor 4 and the monitored energized wire are connected in the following manner: Figure 4 The connection is shown. The current sensor 4 is a Hall effect sensor. The current sensor 4 and the control chip 6 are also equipped with other electrical components required in this embodiment, such as conversion circuits and amplification circuits, which will not be described in detail here. When the current reading obtained by the current sensor 4 is greater than the circuit safety threshold, the control chip 6 disconnects the power switch 5. At this time, the electromagnetic relay switch 3 controls the circuit load 1 to cut off the power, thereby playing a protective role.

[0025] Transformer 2 and circuit load 1 are connected in parallel on the neutral line N and the live line L to form their respective loops. Current sensor 4 is used to monitor the current in the circuit load 1 loop. Control chip 6 is connected in parallel at the output interface of transformer 2. Electromagnetic relay switch 3 includes a low-voltage end and a high-voltage end. The low-voltage end of electromagnetic relay switch 3 is connected in parallel at the output interface of transformer 2. Power switch 5 is connected in series at the low-voltage end of electromagnetic relay switch 3. The high-voltage end of electromagnetic relay switch 3 is connected in series with circuit load 1.

[0026] Preferably, the voltage between the neutral wire N and the live wire L is 220V-360V; the voltage at the output interface of transformer 2 is 22V-36V.

[0027] This invention improves the safety of power switches by controlling whether a high-voltage circuit is energized through a low-voltage circuit.

[0028] Preferably, a 5G wireless transmission module 7 is connected in parallel to the output interface of transformer 2, and the current sensor 4, power switch 5 and 5G wireless transmission module 7 are all connected to the control chip 6 for communication.

[0029] In this invention, the 5G wireless transmission module 7 is also used for wireless communication with the outside world and to send control signals to the control chip 6, thereby achieving remote control.

[0030] Preferably, a mechanical switch 8 is provided at one output interface of the transformer 2. In this utility model, by setting a mechanical switch 8 at the output end, the entire power switch can be manually turned off. When the entire power switch is turned off, the electromagnetic relay switch 3 is in an open circuit state, thereby simultaneously turning off the circuit load 1, thus achieving human controllability and further ensuring the safe operation and safe disconnection of the circuit load 1.

[0031] Preferably, multiple sets of electromagnetic relay switches 3 are connected in parallel at the output interface of transformer 2, and current sensors 4 are connected in series with multiple sets of circuit loads 1 to control whether the corresponding circuit load 1 is energized and working; control chip 6 is communicatively connected to current sensor 4 in each set and power switch 5 connected in series with low voltage port of electromagnetic relay switch 3 in each set.

[0032] like Figure 3 As shown, this utility model controls multiple circuit loads 1 simultaneously.

[0033] Preferably, the low-voltage side of the electromagnetic relay switch 3 includes a base plate 301, an insulating lever 302 is hinged on the base plate 301, a spring 303 is provided between one end of the insulating lever 302 and the base plate 301, and a conductive end 304 is provided at the other end of the insulating lever 302. The conductive end 304 is compatible with the high-voltage side of the electromagnetic relay switch 3. A magnetic coil 305 is installed on the base plate 301, and a magnetic block 306 is installed in the middle of the insulating lever 302. The magnetic coil 305 is connected in parallel to the output interface of the transformer 2 through the power switch 5.

[0034] In this application, when the electromagnetic relay switch 3 is energized and conducting, the magnetic coil 305 generates magnetism, which in turn generates a repulsive force on the magnetic block 306. This causes the conductive end 304 of the insulating lever 302 to expand outward, at which point the conductive end 304 is in close contact with the high-voltage end of the electromagnetic relay switch 3. At this time, the circuit load 1 is energized and operates normally. If the power switch 5 or the mechanical switch 8 is disconnected, the low-voltage end of the electromagnetic relay switch 3 is de-energized. In this case, the magnetic coil 305 has no current and does not generate a large repulsive force. Under the elastic force of the spring 303, one end of the insulating lever 302 opens outward, disconnecting the conductive end 304 from the high-voltage end of the electromagnetic relay switch 3. At this time, the circuit load 1 is de-energized and stops operating.

[0035] like Figures 1-4 As shown, the working principle of this utility model is as follows: In actual use, the control chip 6 adopts an STM32 chip. The control chip 6 acquires the current data of the current sensor 4. The current sensor 4 adopts a Hall effect sensor. Other electrical components required in this embodiment, such as conversion circuits and amplification circuits, are also adapted between the current sensor 4 and the control chip 6. These will not be elaborated here. When the current reading acquired by the current sensor 4 is greater than the circuit safety threshold, the control chip 6 disconnects the power switch 5, and the low-voltage end of the electromagnetic relay switch 3 is de-energized. At this time, there is no current in the magnetic coil 305, and no large repulsive force is generated. At this time, under the action of the spring 303, one end of the insulating lever 302 opens outward, so that the conductive end 304 is disconnected from the high-voltage end of the electromagnetic relay switch 3. At this time, the circuit load 1 is de-energized and stops working, thereby playing a protective role.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A wireless remote power switch device with overload protection, used to control whether the circuit load (1) between the neutral wire N and the live wire L is energized, characterized in that: The power switch device includes a transformer (2), an electromagnetic relay switch (3), a current sensor (4), a power switch (5), and a control chip (6); The transformer (2) and the circuit load (1) are connected in parallel on the neutral line N and the live line L to form their respective circuits. The current sensor (4) is used to monitor the current in the circuit load (1) circuit. The control chip (6) is connected in parallel at the output interface of the transformer (2). The electromagnetic relay switch (3) includes a low-voltage end and a high-voltage end. The low-voltage end of the electromagnetic relay switch (3) is connected in parallel at the output interface of the transformer (2). The power switch (5) is connected in series at the low-voltage end of the electromagnetic relay switch (3). The high-voltage end of the electromagnetic relay switch (3) is connected in series on the circuit load (1).

2. The wireless remote power switch device with overload protection according to claim 1, characterized in that: The voltage between the neutral wire N and the live wire L is 220V-360V; the voltage at the output interface of the transformer (2) is 22V-36V.

3. The wireless remote power switch device with overload protection according to claim 1, characterized in that: The output interface of the transformer (2) is connected in parallel with a 5G wireless transmission module (7). The current sensor (4), the power switch (5) and the 5G wireless transmission module (7) are all connected to the control chip (6) for communication.

4. A wireless remote power switch device with overload protection according to claim 1, characterized in that: A mechanical switch (8) is provided at one output interface of the transformer (2).

5. A wireless remote power switch device with overload protection according to claim 1, characterized in that: The output interface of the transformer (2) is connected in parallel with multiple sets of electromagnetic relay switches (3), and in conjunction with current sensors (4) connected in series with multiple sets of circuit loads (1) to control whether the corresponding circuit load (1) is powered on. The control chip (6) is communicatively connected to the current sensor (4) in each group and to the power switch (5) connected in series in each group to the low-voltage port of the electromagnetic relay switch (3).

6. A wireless remote power switch device with overload protection according to claim 1, characterized in that: The low-voltage side of the electromagnetic relay switch (3) includes a base plate (301), an insulating lever (302) is hinged on the base plate (301), a spring (303) is provided between one end of the insulating lever (302) and the base plate (301), and a conductive end (304) is provided at the other end of the insulating lever (302). The conductive end (304) is compatible with the high-voltage side of the electromagnetic relay switch (3). A magnetic coil (305) is installed on the base plate (301), and a magnetic block (306) is installed in the middle of the insulating lever (302). The magnetic coil (305) is connected in parallel to the output interface of the transformer (2) through a power switch (5).

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