CN218997281U - Patch board with protection function - Google Patents

Abstract

The embodiment of the application provides a patch board with a protection function, which at least comprises a main control module, an alternating current power supply input module, a detection module, a protection module, a first transformer and a direct current power supply output module which are electrically connected in sequence; the detection module is used for detecting the circuit state of the patch board; the first transformer is used for converting an alternating current power supply input by the alternating current power supply input module into a direct current power supply and outputting the direct current power supply through the direct current power supply output module; the main control module is respectively connected with the detection module and the protection module; the main control module is used for controlling the on-off of the protection module according to the circuit state.

Description

Patch board with protection function

Technical Field

The embodiment of the application relates to the technical field of intelligent equipment, and relates to a patch board with a protection function.

Background

At present, the patch board is used as an indispensable device for connecting a power supply and an electric appliance, and plays an extremely important role in daily life of people.

However, the current power supply to the equipment can be realized by combining a charger and a patch board, so that the travel load is increased during travel, and the resource waste is caused by using various chargers in the daily use process; and the patch board in the related art only depends on the button on the patch board to control the on-off of the power supply circuit, and the power supply safety cannot be ensured.

Disclosure of Invention

Based on the problems in the related art, the embodiment of the application provides a patch board with a protection function.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides a patch board with a protection function, which at least comprises a main control module, an alternating current power supply input module, a detection module, a protection module, a first transformer and a direct current power supply output module which are electrically connected in sequence; the detection module is used for detecting the circuit state of the patch board; the first transformer is used for converting an alternating current power supply input by the alternating current power supply input module into a direct current power supply and outputting the direct current power supply through the direct current power supply output module;

the main control module is respectively connected with the detection module and the protection module; the main control module is used for controlling the on-off of the protection module according to the circuit state.

In some embodiments, the circuit state includes at least one of an overload state and an overcurrent state;

the detection module at least comprises a first detection module and is used for detecting at least one of an overload state of the alternating current power supply input module and an overcurrent state of the patch board zero line; the first detection module at least comprises a current limiting resistor, a metering chip and an optical coupler; the metering chip at least comprises an IAP pin, an IAN pin and an SDO pin;

the current limiting resistor is connected with a zero line of the patch board in series; one end of the current limiting resistor is connected with an IAP pin of the metering chip, and the other end of the current limiting resistor is connected with an IAN pin of the metering chip;

the optocoupler at least comprises a first pin and a second pin, wherein the first pin is connected with the SDO pin of the metering chip, and the second pin is connected with the main control module.

In some embodiments, the circuit state includes at least an under-voltage state; the detection module at least comprises a second detection module, and the second detection module is used for detecting the under-voltage state of the live wire in the patch board; the second detection module at least comprises a metering chip and an optical coupler; the metering chip also comprises a VP pin;

and the VP pin of the metering chip is connected with the fire wire in series.

In some embodiments, the protection module includes at least a relay; the optocoupler further comprises a third pin;

the relay is respectively connected with the live wire and the third pin of the patch board, and the relay is connected with the main control module through the optocoupler.

In some embodiments, the patch panel further comprises a voltage current detection module;

the voltage and current detection module is respectively connected with the detection module and the main control module and is used for detecting the voltage and current input by the alternating current power input module.

In some embodiments, the voltage and current detection module comprises at least a sampling resistor and a voltage dividing resistor; the detection module at least comprises a metering chip, and the metering chip at least comprises an IAP pin, an IAN pin and a VP pin;

the sampling resistor is connected with a zero line of the patch board in series, one end of the sampling resistor is connected with an IAP pin of the metering chip, and the other end of the sampling resistor is connected with an IAN pin of the metering chip;

and the divider resistor is respectively connected with the live wire of the patch board and the VP pin of the metering chip.

In some embodiments, the patch panel further comprises a second transformer;

the first transformer and the second transformer are both alternating current-to-direct current transformers; the first transformer and the second transformer are 220-volt to 5-volt alternating current to direct current transformers.

In some embodiments, the second transformer is connected to the main control module and the detection module, respectively, and is configured to provide dc power to the main control module.

In some embodiments, the patch panel further comprises an ac power output module;

the alternating current power supply output module is connected with the protection module and used for outputting alternating current power supply.

In some embodiments, the patch panel further comprises a key control module;

the key control module is connected with the main control module and used for controlling the connection between the alternating current power supply output module and/or the direct current power supply output module and the alternating current power supply input module.

The embodiment of the application provides a patch board with a protection function, firstly, a detection module in the patch board is used for detecting the circuit state of the patch board, such as the overload state of an alternating current power supply input module in the patch board, the under-voltage state of a live wire and the overcurrent state of a zero line, and a main control module controls the on-off of the protection module according to the circuit state of the patch board, so that the power supply state of the alternating current power supply input module is controlled, the abnormal charging protection function is provided, and the power supply safety is ensured; secondly, through first transformer and DC power supply output module, the embodiment of the application carries out the buck conversion to the AC power supply that AC power supply input module provided, through DC power supply output module to electronic equipment power supply, has realized the combination of wiring board and charger, has reduced the wasting of resources.

Drawings

In the drawings (which are not necessarily drawn to scale), like numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different instances of similar components. The drawings illustrate generally, by way of example and not by way of limitation, various embodiments discussed herein.

Fig. 1 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application;

fig. 2 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application;

fig. 3 is a schematic circuit connection diagram of a first detection module according to an embodiment of the present application;

fig. 4 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application;

fig. 5 is a schematic circuit connection diagram of a second detection module according to an embodiment of the present application;

fig. 6 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application;

fig. 7 is a schematic circuit connection diagram of a voltage and current detection module according to an embodiment of the present application;

fig. 8 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application;

fig. 9 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application;

fig. 10 is a schematic diagram of a patch board with protection function according to an embodiment of the present application

Fig. 11 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings, and the described embodiments should not be construed as limiting the present application, and all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present application.

In the following description, suffixes such as "module" or "unit" for representing elements are used only for facilitating the description of the present application, and have no specific meaning per se. Thus, "module" or "unit" may be used in a hybrid.

It should be noted that the embodiments of the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted in the embodiments of the present application to avoid unnecessarily obscuring the utility model.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict. Unless defined otherwise, all technical and scientific terms used in the embodiments of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of the present application belong. The terminology used in the embodiments of the present application is for the purpose of describing the embodiments of the present application only and is not intended to be limiting of the present application.

In the related art, the charger is an electric energy conversion tool, can convert commercial power (i.e. alternating current) into direct current, can supply power for electronic equipment such as a mobile phone, a flat panel, a mobile power supply and the like, and can only be used on a patch board or a fixed socket. The patch board is a movable multi-position socket with a power line and a plug, and can be connected with more than one power plug, so that the space is saved, the socket expansion is realized, the circuit is saved, the patch board is used as an extension line of the socket, the expansion of one-to-many socket is realized, and the patch board can supply power for equipment such as a computer, a blower, a fan, a television and the like.

At present, when going out, the mobile phone generally carries various devices such as a charger, a socket and the like, and the travel burden is increased.

Based on the problems existing in the related art, the embodiment of the application provides a patch board with a protection function, and the detection module in the patch board is used for detecting the circuit state of the patch board, such as the overload state of an alternating current power input module in the patch board, the under-voltage state of a live wire and the overcurrent state of a zero line, and the circuit state of the patch board of the main control module is used for controlling the on-off of the protection module so as to control the power supply state of the alternating current power input module, so that the abnormal charging protection function is provided, and the power supply safety is ensured; according to the embodiment of the application, the alternating current power supply provided by the alternating current power supply input module is subjected to voltage reduction conversion through the first transformer and the direct current power supply output module, the electronic equipment is powered through the direct current power supply output module, the combination of the wiring board and the charger is realized, the charger and the wiring board are combined into one, various abnormal protection functions are integrated, and the functions of small size, low price, safe power utilization and the like are realized.

Fig. 1 is a schematic diagram of a patch board with a protection function provided in an embodiment of the present application, as shown in fig. 1, the patch board at least includes a main control module 101, an ac power input module 102, a detection module 103, a protection module 104, a first transformer 105, and a dc power output module 106 that are electrically connected in sequence. The detection module 103 is used for detecting the circuit state of the patch board; one end of the ac power input module 102 is connected to a power supply end, and the first transformer 105 is configured to convert the ac power input by the ac power input module 102 into dc power, and output the dc power through the dc power output module 106.

Here, the circuit state of the patch panel may refer to an overload state of the ac power input module 102 and an overcurrent state of the neutral line in the patch panel.

In some embodiments, the detection module 103 includes a first detection module 103-1, and the first detection module 103-1 may be an overload detection module, where the overload module is configured to detect an overload state of the ac power input module. Here, the overload state of the ac power input module means that the power of the device connected to the patch panel exceeds the rated power of the patch panel, so that the ac power input of the ac power input module is overloaded. The regulations of the rated power of the patch boards are different in different countries, and when the power of equipment connected with the patch boards exceeds the rated power, for example, the power is 2500 to 3000 watts (W) in China; between 1625 and 1950W in the united states and 1500 to 1800W in japan, problems such as heating and ignition of the patch board can occur.

In some embodiments, the first detection module 103-1 may also be an overcurrent detection module, where the overcurrent detection module is configured to detect an overcurrent state of the neutral line of the patch board, where the overcurrent state of the neutral line of the patch board refers to that a current value input by the ac power input module 102 exceeds a rated current of the patch board, and different countries have different regulations on the rated current of the patch board, and when the current input by the patch board exceeds the rated current, for example, the current input by the patch board is between 10 and 15 amperes (a) in china; between 13 and 16A in the united states and between 12 and 16A in japan, problems such as heating and ignition of the patch board can occur.

In some embodiments, the main control module 101 is connected to the first detection module 103-1 and the protection module 104, respectively; the main control module is configured to control on-off of the protection module 104 according to the overload state and the overcurrent state, so as to control output of the dc power output module 106. For example, when the first detection module 103-1 detects that the ac power input module has an overload state or an overcurrent state of a zero line in the patch board, the first detection module 103-1 feeds back overload information to the main control module 101, and the main control module 101 controls on-off of the protection module 104, so as to control on-off of the patch board.

In some embodiments, the ac power input module 102 may be a wire for use in removing power from a power supply to a device connected to a patch panel.

In some embodiments, the first detection module 103-1 includes at least a current limiting resistor 1031, a metering chip 1032, and an optocoupler 1033. Fig. 2 is a schematic diagram of a patch board with a protection function provided in the embodiment of the present application, as shown in fig. 2, a current limiting resistor 1031, a metering chip 1032, and an optocoupler 1033 are electrically connected in sequence, and the optocoupler 1033 is connected with a main control module 101 and a protection module 104 respectively.

In some embodiments, the protection module 104 includes at least a relay 1041, and the optocoupler 1033 includes at least a third pin 3. The relay 1041 is connected in series with a live wire (L) of the patch board, and the relay 1041 is connected with the third pin 3, and is connected with the main control module 101 through the optocoupler 1033.

In some embodiments, the main control module 101 may be a single chip microcomputer (Microcontroller Unit, MCU) or a control IC.

In some embodiments, the metering chip 1032 includes at least IAP pins, IAN pins, and SDO pins, as shown in fig. 3, and fig. 3 is a schematic circuit connection diagram of the first detection module provided in the embodiments of the present application. The current limiting resistor 1031 is connected in series with a zero line (N) of the patch board, one end of the current limiting resistor 1031 is connected with an IAP PIN of the metering chip, the other end of the current limiting resistor 1031 is connected with an IAN PIN of the metering chip, the optocoupler 1033 at least comprises a first PIN 1, a second PIN 2 and a third PIN 3, the first PIN 1 is connected with an SDO PIN of the metering chip, the second PIN 2 is connected with an MCU-RX 13PIN of the main control module 101, and the third PIN 3 is connected with the relay 1041 through the triode Q1.

In some embodiments, meter chip 1032 may be used to measure signals that are sampled through IAP, IAN, VP, etc. pins into the chip interior.

In some embodiments, by detecting the voltage across the current limiting resistor 1031 on the zero line, when the voltage reaches the voltage threshold, the circuit is in an overload state, and overload protection is started, at this time, the optocoupler 1033 is turned on, the level of the MCU-RX 13PIN of the main control module 101 is pulled down, the level at the base of the transistor Q1 is pulled down, the transistor Q1 is turned off, and thus the relay 1041 is turned off, that is, the protection module 104 is turned off, so that the dc power output module 106 is turned off, and the power supply of the patch board is stopped.

In some embodiments, by detecting the voltage at two ends of the current limiting resistor 1031 on the zero line, determining the current value on the zero line, when the current value exceeds the rated current of the patch board, starting overcurrent protection, at this time, the optocoupler 1033 is turned on, the level of the MCU-RX 13PIN PIN of the main control module 101 is pulled down, the main control module 101 controls the level at the base of the triode Q1 to be pulled down, the triode Q1 is disconnected, and then the relay 1041 is disconnected, namely the protection module 104 is disconnected, the live wire is disconnected, and the patch board stops supplying power, so that the patch board provided by the embodiment of the application has the overcurrent protection function.

So, through the wiring board with protect function that this application embodiment provided, can detect the overload state of alternating current power input module in the wiring board and the overflow state of zero line in the wiring board to according to overload state and overflow state control wiring board's power supply state, make the power supply safer.

In some embodiments, the circuit state of the patch panel includes at least an under-voltage state; the detection module 103 further comprises a second detection module 103-2, and the second detection module 103-2 is used for detecting the under-voltage state of the live wire in the patch board. Here, the under-voltage state of the hot wire means that the voltage of the hot wire of the patch panel is lower than the standard ac voltage (220V), for example, 170V. The undervoltage of the patch board can cause the equipment connected with the patch board to generate heat or fire.

In some embodiments, the main control module 101 is connected to the second detection module 103-2 and the protection module 104, respectively; the main control module is configured to control on-off of the protection module according to the under-voltage state, so as to control output of the dc power output module 106.

In some embodiments, the second detection module includes at least the metrology chip 1034 and the optocoupler 1035. Fig. 4 is a schematic diagram of a patch board with a protection function provided in the embodiment of the present application, as shown in fig. 4, a metering chip 1034 is connected in series with an optical coupler 1035, and the optical coupler 1035 is connected with a main control module 101 and a protection module 104 respectively.

In some embodiments, the metering chip 1034 further includes a VP pin and an SDO pin, as shown in fig. 5, and fig. 5 is a schematic circuit connection diagram of the second detection module provided in the embodiment of the present application. The VP PIN of the metering chip 1034 is connected in series with the live wire (L) and is used for detecting whether the live wire has an under-voltage state, the optocoupler 1035 at least comprises a first PIN 1, a second PIN 2 and a third PIN 3, the first PIN 1 is connected with the SDO PIN of the metering chip 1034, the second PIN 2 is connected with the MCU-RX 13PIN of the main control module 101, and the third PIN 3 is connected with the relay 1041 through the triode Q1.

In some embodiments, meter chip 1034 may be used to measure signals that are sampled into the chip via pins such as VP.

In some embodiments, when the patch board supplies power normally, the voltage of the live wire is 220V, and when the metering chip 1034 detects that the voltage of the live wire is far lower than 220V, for example, the voltage of the live wire is 170V, which indicates that the live wire has an under-voltage state, the optocoupler 1035 is turned on, the level of the MCU-RX 13PIN of the main control module 101 is pulled down, the main control module 101 controls the level at the base of the triode Q1 to be pulled down, the triode Q1 is disconnected, so that the relay 1041 is disconnected, that is, the protection module 104 is disconnected, so that the dc power output module 106 is disconnected, and the patch board stops supplying power. So, through the wiring board with under-voltage protection that this application embodiment provided, the under-voltage state of live wire in the wiring board can be detected to according to the power supply state of under-voltage state control wiring board, make the power supply safer.

In some embodiments, optocoupler 1035 or optocoupler 1033 further includes a fourth pin 4 and a fifth pin 5, the fourth pin 4 being connected to an input voltage of 5 volts (V) via a resistor R1, the fifth pin 5 also being connected to an input voltage of 5V; a capacitor C2 is connected in series between the fifth pin 5 and the second pin 2, and the resistor R2 is connected in parallel with the C2; a capacitor C1 is connected in series between the third pin 3 and the second pin 2. The relay 1041 is connected with the live wire in series, the relay 1041 is respectively connected with the third PIN 3 of the optocoupler and the 7PIN PIN of the main control module 101 through the triode Q1, and the relay 1041 is also connected with an input voltage of 5 volts (V).

In some embodiments, the first detection module and the second detection module may be combined in one patch board, so that the patch board with the protection function provided by the application may realize overload protection, overcurrent protection and undervoltage protection simultaneously.

In some embodiments, the patch panel further comprises a voltage current detection module 107; the voltage and current detection module 107 is connected to the first detection module 103 and the main control module 101, respectively, and is configured to detect the voltage and current input by the ac power input module 102. As shown in fig. 6, fig. 6 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application.

In some embodiments, the voltage and current detection module 107 includes at least a sampling resistor 1071 and a voltage dividing resistor 1072. Fig. 7 is a schematic circuit connection diagram of a voltage and current detection module according to an embodiment of the present application, and as shown in fig. 7, a metering chip (1032 or 1034) of the detection module further includes an IAP pin, an IAN pin, and a VP pin.

In some embodiments, the sampling resistor 1071 is connected in series with the neutral line of the patch panel, one end of the sampling resistor 1071 is connected to the IAP pin of the metering chip 1032, and the other end is connected to the IAN pin of the metering chip 1032. The relay 1041 is connected to the 7PIN of the main control module 101 via a transistor Q1. By sampling the current applied across the resistor 1071, the metering chip captures the voltage across the resistor 1071, and when the voltage reaches a voltage threshold, e.g., 10V, or the current reaches a current threshold, e.g., 10A, the main control module 101 controls the relay 1041 (i.e., the protection module 104) to open to achieve safe power.

In some embodiments, the voltage dividing resistor may be at least one, as shown in fig. 7, the voltage dividing resistor 1072 may be composed of a plurality of resistors, for example, the voltage dividing resistor 1072 is composed of a plurality of resistors R5 to R9, and the live wire of the patch board is connected to the VP pin of the metering chip through the voltage dividing resistor 1072. The metering chip collects the voltage reduced by the voltage dividing resistor 1072, and when the voltage exceeds a voltage threshold, for example, 10V, the main control module 101 controls the relay 1041 (i.e. the protection module 104) to be turned off so as to realize safe power supply.

In some embodiments, the voltage dividing resistor 1072 may be connected in parallel to the resistor R10, the capacitor C3 and a transient voltage suppressing diode, so as to absorb the surge power, and withstand the reverse voltage surge in a very short time, so that the voltage clamp is located at a specific voltage, and the circuit is prevented from being impacted.

In some embodiments, the current and voltage signals collected by the metering chip can be fed back to the mcu_tx 12PIN of the main control module 101 through the SDO PIN in real time, so that when the voltage or current in the live wire or the zero wire exceeds a set voltage threshold value, the main control module 101 controls the on-off of the relay, and further controls the power supply on-off of the patch board.

In some embodiments, the patch panel further includes a second transformer 108; the first transformer 105 and the second transformer 108 are both ac-dc transformers.

Fig. 8 is a schematic diagram of a patch board with a protection function according to an embodiment of the present application. As shown in fig. 8, the second transformer 108 is connected to the main control module 101 and the detection module 103, respectively, and is configured to provide dc power to the main control module 101.

In some embodiments, the first transformer 105 and the second transformer 108 may be 220V to 5V transformers, and the output voltage may be adjusted according to the electronic device to be charged, for example, may be 220V to 9V transformers or 220V to 12V transformers.

In some embodiments, the first transformer 105 may further include a rectifying circuit and a voltage stabilizing circuit, to convert 220V ac into 5V low voltage pulse, and then pass through a rectifying and voltage stabilizing circuit to become 5V stable dc to supply power to electronic devices such as a mobile phone. The second transformer 108 may be used to convert 220V ac power to 5V stable dc power to power the main control module 101.

In some embodiments, chips SC3057 and SC3503 may be used as the buck output chips of first transformer 105 and second transformer 108. The chip SC9711 can be used as a direct current conversion (DC-DC) and a protocol converter to realize communication between the direct current power supply output module 106 and the electronic equipment to be charged, and the embodiment of the application can adjust the output voltage of the direct current power supply output module 106 according to the communication content to realize the rapid charging function of the electronic equipment such as a mobile phone.

In some embodiments, the patch panel further includes an ac power output module 109, as shown in fig. 9, where the ac power output module 109 is connected to the protection module 104, and is configured to output ac power. The ac power output module 109 may be an ac power outlet.

In some embodiments, the patch panel further includes a key control module 110, as shown in fig. 10, where the key control module 110 is connected to the main control module 101, and is used to control the connection between the ac power output module 109 and/or the dc power output module 106 and the ac power input module 102. The key control module 110 may be a key of a patch panel, and controls power supply of the patch panel through the key.

In this embodiment of the present application, the connection sequence of the detection module 103, the voltage and current detection module 107, and the second transformer 108 may be adjusted, and the present utility model is not limited thereto, as shown in fig. 11, and fig. 11 is a schematic diagram of a patch panel structure with a protection function provided in this embodiment of the present application.

According to the patch board with the protection function, the detection module in the patch board is used for detecting the circuit state of the patch board, such as the overload state of the alternating current power supply input module in the patch board, the under-voltage state of a live wire and the overcurrent state of a zero line, the circuit state of the patch board of the main control module is used for controlling the on-off of the protection module, so that the power supply state of the alternating current power supply input module is controlled, the abnormal charging protection function is provided, and the power supply safety is guaranteed; according to the embodiment of the application, the alternating current power supply provided by the alternating current power supply input module is subjected to voltage reduction conversion through the first transformer and the direct current power supply output module, the electronic equipment is powered through the direct current power supply output module, the combination of the wiring board and the charger is realized, the charger and the wiring board are combined into one, various abnormal protection functions are integrated, and the functions of small size, low price, safe power utilization and the like are realized.

The foregoing is merely exemplary embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and scope of the present utility model are included in the protection scope of the present utility model.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present utility model, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

The foregoing is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and the changes and substitutions are intended to be covered by the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. The patch board with the protection function is characterized by at least comprising a main control module, an alternating current power supply input module, a detection module, a protection module, a first transformer and a direct current power supply output module which are electrically connected in sequence; the detection module is used for detecting the circuit state of the patch board; the first transformer is used for converting an alternating current power supply input by the alternating current power supply input module into a direct current power supply and outputting the direct current power supply through the direct current power supply output module;

the main control module is respectively connected with the detection module and the protection module; the main control module is used for controlling the on-off of the protection module according to the circuit state.

2. The patch panel of claim 1, wherein the circuit condition includes at least one of an overload condition and an over-current condition;

the detection module at least comprises a first detection module and is used for detecting at least one of an overload state of the alternating current power supply input module and an overcurrent state of the patch board zero line;

the first detection module at least comprises a current limiting resistor, a metering chip and an optical coupler; the metering chip at least comprises an IAP pin, an IAN pin and an SDO pin;

the current limiting resistor is connected with a zero line of the patch board in series; one end of the current limiting resistor is connected with an IAP pin of the metering chip, and the other end of the current limiting resistor is connected with an IAN pin of the metering chip;

the optocoupler at least comprises a first pin and a second pin, wherein the first pin is connected with the SDO pin of the metering chip, and the second pin is connected with the main control module.

3. The patch panel of claim 1, wherein the circuit state comprises at least an under-voltage state; the detection module at least comprises a second detection module, and the second detection module is used for detecting the under-voltage state of the live wire in the patch board;

the second detection module at least comprises a metering chip and an optical coupler; the metering chip also comprises a VP pin and an SDO pin;

the VP pin of the metering chip is connected with the fire wire in series;

the optocoupler at least comprises a first pin and a second pin, wherein the first pin is connected with the SDO pin of the metering chip, and the second pin is connected with the main control module.

4. A patch panel according to claim 2 or 3, wherein said protection module comprises at least a relay; the optocoupler further comprises a third pin;

the relay is respectively connected with the live wire and the third pin of the patch board, and the relay is connected with the main control module through the optocoupler.

5. The patch panel of claim 4, further comprising a voltage current detection module;

the voltage and current detection module is respectively connected with the detection module and the main control module and is used for detecting the voltage and current input by the alternating current power input module.

6. The patch panel of claim 5, wherein the voltage-current detection module comprises at least a sampling resistor and a voltage dividing resistor; the detection module at least comprises a metering chip, and the metering chip at least comprises an IAP pin, an IAN pin and a VP pin;

the sampling resistor is connected with a zero line of the patch board in series; one end of the sampling resistor is connected with an IAP pin of the metering chip, and the other end of the sampling resistor is connected with an IAN pin of the metering chip;

and the divider resistor is respectively connected with the live wire of the patch board and the VP pin of the metering chip.

7. The patch panel of claim 1, wherein the patch panel further comprises a second transformer;

the first transformer and the second transformer are both alternating current-to-direct current transformers; the first transformer and the second transformer are 220-volt to 5-volt alternating current to direct current transformers.

8. The patch panel of claim 7, wherein the second transformer is connected to the main control module and the detection module, respectively, for providing dc power to the main control module.

9. The patch panel of claim 1, wherein the patch panel further comprises an ac power output module;

the alternating current power supply output module is connected with the protection module and used for outputting alternating current power supply.

10. The patch panel of claim 9, wherein the patch panel further comprises a key control module;

the key control module is connected with the main control module and used for controlling the connection between the alternating current power supply output module and/or the direct current power supply output module and the alternating current power supply input module.

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