A multi-channel direct current adjustable intelligent electronic circuit breaker

Abstract

This invention proposes a multi-channel DC adjustable intelligent electronic circuit breaker, specifically relating to the field of circuit protection technology. It includes an MCU module; a power supply connected to the MCU module; a current adjustment knob (KNOB) connected to the MCU module; at least one intelligent fuse connected to both the power supply and the MCU module, with each intelligent fuse corresponding to a load connected to its respective channel; one-time fuses corresponding to the intelligent fuses; and a Bluetooth unit built into the MCU module. By configuring the MCU module, designing the current adjustment knob (KNOB) on the MCU module, and designing intelligent fuses on each load-connected path, the short-circuit protection response time of the multi-channel DC adjustable intelligent electronic circuit breaker proposed in this invention is improved by one level, from the microsecond (µs) level to the nanosecond (ns) level.

Description

Technical Field

[0001] This invention relates to the field of circuit protection technology, and in particular to a multi-channel DC adjustable intelligent electronic circuit breaker. Background Technology

[0002] With the development of 5G communication and IoT technologies, the types of traditional household electricity consumption have gradually increased. For example, before the maturity of IoT technology, household electricity consumption generally included televisions, refrigerators, air conditioners, lights, and range hoods. However, with the development of IoT technology, existing household electricity consumption has also added a series of smart products such as curtains and light controls. These technologies are basically based on HPLC technology to realize the layout of household IoT, thus forming household electricity groups / circuit groups. However, at present, the response time of household circuit groups for load protection is slow, usually at the microsecond level, and the data acquisition types are limited, such as voltage and current acquisition. This results in the inability to accurately detect the load status of each load in the household circuit group and to effectively protect each load. Summary of the Invention

[0003] To address the aforementioned issues, this invention proposes a multi-channel DC adjustable intelligent electronic circuit breaker, which more accurately solves the problems of slow load protection response time (typically in the microsecond range) and limited data acquisition types in current household circuits.

[0004] This invention is achieved through the following technical solution:

[0005] This invention proposes a multi-channel DC adjustable intelligent electronic circuit breaker, comprising:

[0006] MCU module;

[0007] The power supply is connected to the MCU module.

[0008] The current adjustment knob, KNOB, is connected to the MCU module.

[0009] At least one smart fuse is connected to the power supply and the MCU module respectively, and the corresponding channel of the smart fuse is connected to the load;

[0010] One-time fuses are connected to the smart fuses respectively;

[0011] The Bluetooth unit is built into the MCU module;

[0012] The method of implementing multi-channel independent current adjustment through the electronic circuit breaker is as follows:

[0013] When each channel is adjusted to the corresponding current threshold using the KNOB current adjustment knob, the MCU module will collect the current value passing through the smart fuse. When the current value reaches the preset current threshold, a fault signal will be output. The MCU module will then perform trip control based on the fault signal and the preset trip time.

[0014] During normal operation, the channel can be opened and closed by each independent button, and a reset operation can also be performed. The smart fuse can quickly shut off the circuit when the load is short-circuited, and its shutdown response time is 200ns.

[0015] The MCU module acquires data signals from the smart fuse and processes the data signals. The data signals include, but are not limited to, current, voltage, temperature, and events. The data processing includes calculating the power consumption of the load, the operating temperature of the smart fuse, and determining whether overcurrent or short-circuit protection is needed.

[0016] The MCU module detects an overcurrent in the data signal path and controls the on / off state of the smart fuse. If a load short circuit occurs, the smart fuse can automatically and quickly shut off. If the smart fuse fails and an overload or short circuit occurs in the path, the one-time fuse acts as the last line of defense to cut off the entire path.

[0017] Furthermore, the current adjustment knob KNOB can adjust the current threshold to 2A, 3A, 4A, 6A, 8A, and 10A respectively.

[0018] Furthermore, the multi-channel DC adjustable intelligent electronic circuit breaker also includes a signal input terminal and a signal output terminal. External devices can set the electronic circuit breaker by means of the signal input terminal, and the signal output terminal outputs the corresponding status according to the input command.

[0019] Furthermore, the multi-channel DC adjustable intelligent electronic circuit breaker also includes a power tilting unit, which is disposed within the MCU module and includes: a microcomputer, at least one drive circuit and a matching number of loads, and a Bluetooth unit.

[0020] The microcomputer is connected to the drive circuit and the Bluetooth unit respectively;

[0021] The drive circuit is connected in series with the corresponding matching MOSFET and then connected to the load.

[0022] The Bluetooth unit connects all the MOSFETs and is connected in series with a load that matches the MOSFETs.

[0023] Furthermore, the microcomputer includes a Bluetooth signal input unit, a control unit, a storage unit, and a drive output unit matching the number of drive circuits. The control unit is connected to the MCU, and the Bluetooth signal input unit, control unit, storage unit, and drive output unit are interconnected.

[0024] Furthermore, the MCU module outputs and receives PLC signals through signal input and signal output terminals to form a signal flow of the power circuit. The signal flow forms a real-time circuit diagram, which is then output to the user terminal via Bluetooth unit.

[0025] Furthermore, the MCU module outputs and receives PLC signals as binary signals through the signal input terminal and signal output terminal. The PLC signal with high and low level protocol signals is output from the signal output terminal and received from the signal input terminal to determine whether a high or low level change has occurred.

[0026] If so, a fault is detected in the path. The MCU module determines the specific fault based on the data signal and sends a fault signal to the user terminal via Bluetooth.

[0027] Furthermore, if the MCU module determines that there is a high-low level change in the path, it acquires the binary sequence of the PLC signal with the high-low level change, compares the binary sequence of the PLC signal with a preset sequence, determines the fault point in the binary sequence, confirms the fault circuit point in the path based on the fault point, and finally sends the fault circuit point to the user terminal through the MCU module.

[0028] Furthermore, the multi-channel DC adjustable intelligent electronic circuit breaker also includes a precision measurement port BT, which is connected to the MCU module.

[0029] Furthermore, the multi-channel DC adjustable intelligent electronic circuit breaker also includes a key and a blue LED, which are respectively connected to the MCU module.

[0030] The beneficial effects of this invention are:

[0031] (1) By setting up an MCU module and designing a current adjustment knob KNOB on the MCU module, and designing intelligent fuses on each path connected to a load, the response time of the multi-channel DC adjustable intelligent electronic circuit breaker proposed in this invention for short circuit protection is improved by one level, from the us level to the ns level.

[0032] (2) By setting up a power tilting unit, the power output can be switched when a short circuit or other fault occurs in a certain channel. In particular, when large household power-consuming equipment (such as water heater) is turned on, the power supply mode can be intelligently adjusted to ensure stable household power supply.

[0033] (3) The MCU module outputs the PLC signal from the signal output terminal and receives it from the signal input terminal according to the high and low level protocol signal to determine whether a high or low level change has occurred, so as to monitor whether a circuit fault has occurred in the household circuit group. At the same time, it can also determine the fault point by comparing the binary sequence of the PLC signal with the preset sequence, which is convenient for electricians to repair later. Attached Figure Description

[0034] Figure 1 This is a circuit structure block diagram of an embodiment of the multi-channel DC adjustable intelligent electronic circuit breaker of the present invention;

[0035] Figure 2 This is a circuit structure block diagram of another embodiment of the multi-channel DC adjustable intelligent electronic circuit breaker of the present invention;

[0036] Figure 3 This is a circuit structure block diagram of another embodiment of the multi-channel DC adjustable intelligent electronic circuit breaker of the present invention.

[0037] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0039] Please refer to Figure 1 This invention proposes a multi-channel DC adjustable intelligent electronic circuit breaker, comprising:

[0040] MCU module;

[0041] The power supply is connected to the MCU module.

[0042] The current adjustment knob, KNOB, is connected to the MCU module.

[0043] At least one smart fuse is connected to the power supply and the MCU module respectively, and the corresponding channel of the smart fuse is connected to the load;

[0044] One-time fuses are connected to the smart fuses respectively;

[0045] The Bluetooth unit is built into the MCU module;

[0046] The method of implementing multi-channel independent current adjustment through the electronic short-circuit device is as follows:

[0047] When each channel is adjusted to the corresponding current threshold using the KNOB current adjustment knob, the MCU module will collect the current value passing through the smart fuse. When the current value reaches the preset current threshold, a fault signal will be output. The MCU module will then perform trip control based on the fault signal and the preset trip time.

[0048] During normal operation, the channel can be opened and closed by each independent button, and a reset operation can also be performed. The smart fuse can quickly shut off the circuit when the load is short-circuited, and its shutdown response time is 200ns.

[0049] The MCU module acquires data signals from the smart fuse and processes the data signals. The data signals include, but are not limited to, current, voltage, temperature, and events. The data processing includes calculating the power consumption of the load, the operating temperature of the smart fuse, and determining whether overcurrent or short-circuit protection is needed.

[0050] The MCU module detects an overcurrent in the data signal path and controls the on / off state of the smart fuse. If a load short circuit occurs, the smart fuse can automatically and quickly shut off. If the smart fuse fails and an overload or short circuit occurs in the path, the one-time fuse acts as the last line of defense to cut off the entire path.

[0051] In practical implementation, the DC / DC converter serves as the power supply section, primarily converting 24V to 3.3V to power the entire system. The KNOB is a current adjustment knob; each channel has its own independent knob with six settings, adjusting current thresholds of 2A, 3A, 4A, 6A, 8A, and 10A respectively. When a channel is adjusted to the corresponding current threshold, the MCU module collects the current value passing through the smart fuse. When this current value reaches the set threshold, a fault signal is output, and the indicator light outputs a status signal. Simultaneously, the MCU module performs trip control according to the set trip time, thereby protecting downstream loads. During normal operation, channels can be opened and closed using individual buttons, and a reset operation is also possible. The smart fuse can quickly shut off the circuit in the event of a load short circuit, preventing accidents; its shutdown response time is 200ns. The MCU module can simultaneously acquire signals such as current, voltage, temperature, and events from the smart fuse and process these signals. For example, it can calculate the load's power consumption, the smart fuse's operating temperature, and determine if overcurrent or short-circuit protection is needed. If an overcurrent occurs in the circuit, the MCU module can control the smart fuse's on / off state. If a load short circuit occurs, the smart fuse can automatically and quickly shut off. If the smart fuse fails and an overload or short circuit occurs in the circuit, the primary fuse acts as the last line of defense, cutting off the entire circuit and protecting downstream loads. The MCU module has built-in Bluetooth functionality, allowing pairing and data transmission with external Bluetooth devices. The signal input / output terminals allow external devices to set commands to the circuit breaker via the input terminals, and the output terminals output corresponding statuses based on the input commands. The precision measurement port BT is connected to the MCU module for precise measurement of current and voltage values. The button KEY and blue LED are also connected to the MCU module to implement switching functions.

[0052] Reference Appendix Figure 2 In one embodiment, the multi-channel DC adjustable intelligent electronic circuit breaker further includes a power tilting unit, which is disposed within the MCU module and includes: a microcomputer, at least one drive circuit and loads of matching quantity, and a Bluetooth unit.

[0053] The microcomputer is connected to the drive circuit and the Bluetooth unit respectively;

[0054] The drive circuit is connected in series with the corresponding matching MOSFET and then connected to the load.

[0055] The Bluetooth unit connects all the MOSFETs and is connected in series with a load that matches the MOSFETs.

[0056] Preferably, in this embodiment, the data signal input from the MCU module is received through the Bluetooth unit, and the data signal is sent to the microcomputer through Bluetooth. Then, the microcomputer controls three drive circuits. The drive circuits preferably include a first drive circuit D1, a second drive circuit D2, and a third drive circuit D3. The first drive circuit D1, the second drive circuit D2, and the third drive circuit D3 are respectively connected to the first MOSFET A1, the second MOSFET A2, and the third MOSFET A3. Finally, the first load LOAD1, the second load LOAD2, and the third load LOAD3 are connected through the first MOSFET A1, the second MOSFET A2, and the third MOSFET A3. A smart fuse F1 and a one-time fuse F2 are provided between the MOSFETs and the loads.

[0057] It enables the switching of power output when a fault such as a short circuit occurs in a certain channel. In particular, when large household electrical appliances (such as water heaters) are turned on, it can intelligently adjust the power supply mode to ensure stable household power supply.

[0058] In the specific implementation steps, the power tilting unit measures current and voltage through the precise measurement port BT of the MCU module. The power tilting unit, through a drive circuit and the microcomputer, monitors the load current. When the precise measurement port BT determines that a certain load requires a large current (specifically, by comparing it with a preset current value), a MOSFET is used for switching. This MOSFET is connected between the wire and a load different from loads LOAD1, LOAD2, and LOAD3. Thus, by using a switch with a different current threshold than that of other MOSFETs in the decision-making process, the number of times the maximum current value of the wire is reduced can be increased.

[0059] Reference Appendix Figure 3 Preferably, the microcomputer includes a Bluetooth signal input unit, a control unit, a storage unit, and a drive output unit matching the number of drive circuits. The control unit is connected to the MCU, and the Bluetooth signal input unit, control unit, storage unit, and drive output unit are interconnected.

[0060] In the actual implementation process, the storage unit has an internal computer program that performs processes such as preset current values, current value comparison, and drive circuit switching commands. Figure 3 The input section is also used to obtain the current value measured by the precise measurement port BT.

[0061] In one embodiment, the MCU module outputs and receives PLC signals through signal input and signal output terminals to form a signal flow of the power circuit, generates a real-time circuit diagram through the signal flow, and outputs the real-time circuit diagram to the user terminal through the Bluetooth unit.

[0062] Specifically, the MCU module outputs and receives binary PLC signals through signal input and signal output terminals. The PLC signal with high and low level protocol signals is output from the signal output terminal and received from the signal input terminal to determine whether a high or low level change has occurred.

[0063] If so, a fault is detected in the path. The MCU module determines the specific fault based on the data signal and sends a fault signal to the user terminal via Bluetooth.

[0064] If the MCU module determines that there is a high or low level change in the path, it acquires the binary sequence of the PLC signal with the high or low level change, compares the binary sequence of the PLC signal with a preset sequence, determines the fault point in the binary sequence, confirms the fault circuit point in the path based on the fault point, and finally sends the fault circuit point to the user terminal through the MCU module.

[0065] Among them, the binary sequence of PLC signals, such as "-0011010111101000100111011111011101-", can be compared with a preset sequence, such as comparing "-0011010111101000100111011111011101-" and "-0011010111000000100111011111011101-". This will confirm that the "1010" has changed to "0000", and the fault circuit point can be located based on the entire path position of the PLC signal binary sequence.

[0066] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. A multi-channel DC adjustable intelligent electronic circuit breaker, characterized in that, include: MCU module; The power supply is connected to the MCU module. The current adjustment knob, KNOB, is connected to the MCU module. At least one smart fuse is connected to the power supply and the MCU module respectively, and the corresponding channel of the smart fuse is connected to the load; One-time fuses are connected to the smart fuses respectively; The Bluetooth unit is built into the MCU module; The method of implementing multi-channel independent current adjustment through the electronic circuit breaker is as follows: When each channel is adjusted to the corresponding current threshold using the KNOB current adjustment knob, the MCU module will collect the current value passing through the smart fuse. When the current value reaches the preset current threshold, a fault signal will be output. The MCU module will then perform trip control based on the fault signal and the preset trip time. During normal operation, the channel can be opened and closed by each independent button, and a reset operation can also be performed. The smart fuse can quickly shut off the circuit when the load is short-circuited, and its shutdown response time is 200ns. The MCU module acquires data signals from the smart fuse and processes the data signals, which include current, voltage, and temperature. The data processing includes calculating the power consumption of the load, the operating temperature of the smart fuse, and determining whether overcurrent or short-circuit protection is needed. The MCU module detects an overcurrent in the data signal path and controls the on / off state of the smart fuse. If a load short circuit occurs, the smart fuse can automatically and quickly shut off. If the smart fuse fails and an overload or short circuit occurs in the path, the one-time fuse acts as the last line of defense to cut off the entire path.

2. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 1, characterized in that, The KNOB current adjustment knob can adjust the current threshold to 2A, 3A, 4A, 6A, 8A, and 10A respectively.

3. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 1, characterized in that, It also includes a signal input terminal and a signal output terminal. External devices can use the signal input terminal to set commands for the electronic circuit breaker, and the signal output terminal outputs the corresponding status according to the input command.

4. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 1, characterized in that, It also includes a power tilting unit, which is disposed within the MCU module and includes: a microcomputer, at least one drive circuit and loads matching its quantity, and a Bluetooth unit, wherein, The microcomputer is connected to the drive circuit and the Bluetooth unit respectively; The drive circuit is connected in series with the corresponding matching MOSFET and then connected to the load. The Bluetooth unit connects all the MOSFETs and is connected in series with a load that matches the MOSFETs.

5. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 4, characterized in that, The microcomputer includes a Bluetooth signal input unit, a control unit, a storage unit, and a drive output unit matching the number of drive circuits. The control unit is connected to the MCU module, and the Bluetooth signal input unit, control unit, storage unit, and drive output unit are interconnected.

6. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 1 or 5, characterized in that, The MCU module outputs and receives PLC signals through signal input and signal output terminals to form a signal flow of the power circuit. The signal flow forms a real-time circuit diagram, which is then output to the user terminal via Bluetooth unit.

7. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 6, characterized in that, The MCU module outputs and receives binary PLC signals through signal input and signal output terminals. The PLC signal is output from the signal output terminal and received from the signal input terminal through high and low level protocol signals to determine whether a high or low level change has occurred. If so, a fault is detected in the path. The MCU module determines the specific fault based on the data signal and sends a fault signal to the user terminal via Bluetooth.

8. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 7, characterized in that, If the MCU module determines that there is a high or low level change in the path, it acquires the binary sequence of the PLC signal with the high or low level change, compares the binary sequence of the PLC signal with a preset sequence, determines the fault point in the binary sequence, confirms the fault circuit point in the path based on the fault point, and finally sends the fault circuit point to the user terminal through the MCU module.

9. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 1, characterized in that, It also includes a precision measurement port BT, which is connected to the MCU module.

10. The multi-channel DC adjustable intelligent electronic circuit breaker according to claim 1, characterized in that, It also includes a key and a blue LED, which are respectively connected to the MCU module.

Images