Intelligent earth leakage protection switch

Abstract

The utility model discloses an intelligent earth leakage protection switch, which relates to the technical field of circuit protection and comprises a shell, a circuit protection module, a communication control module and an alarm reminding module, the circuit protection module and the communication control module are integrated on the circuit board, the circuit board is fixedly installed in the shell, and the alarm reminding module is fixed to the surface of the shell. The circuit protection module is used for detecting an electrical circuit and controlling the circuit breaker to be switched off; the communication control module is electrically connected with the circuit protection module and the alarm reminding module, and the communication control module is used for collecting circuit parameters, sending parameter information to a mobile user side and controlling on and off of the alarm module; the intelligent safety detection device is high in intelligent degree, and a user can be timely reminded to carry out safety detection and circuit safety reminding.

Description

Technical Field

[0001] The present application relates to the technical field of circuit protection, and in particular to an intelligent leakage protection switch. Background Art

[0002] When users use electricity, improper use of electrical equipment or line leakage may cause electric shock accidents. When leakage is detected, the leakage protection switch can automatically disconnect the circuit breaker or air switch, thereby protecting personal safety. Conventional leakage protection switches need to be tested to ensure normal function, and the test interval is mostly set to one month. However, when users forget to test, they may not be able to protect personal safety when the function is abnormal. In addition, traditional leakage protection switches have the disadvantages of low intelligence and lack of safety reminder functions. Utility Model Content

[0003] In view of this, the present application provides an intelligent leakage protection switch to solve the technical problems that traditional leakage protection switches still have the shortcomings of low intelligence and lack of safety reminder function.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intelligent leakage protection switch, comprising: a housing, a circuit protection module, a communication control module and an alarm reminder module;

[0005] The circuit protection module and the communication control module are integrated on the circuit board, an input hole and an output hole are arranged on one side of the shell, the circuit board is fixedly installed in the shell, and the alarm reminder module is fixed on the surface of the shell;

[0006] The circuit protection module is used to detect the electrical circuit and control the circuit breaker to disconnect;

[0007] The communication control module is electrically connected to the circuit protection module and the alarm reminder module. The communication control module is used to collect circuit parameters, send parameter information to the mobile user terminal, and control the opening and closing of the alarm module;

[0008] The alarm reminder module is used for electrical safety alarms and test reminders.

[0009] Further, the circuit protection module includes a detection circuit and a voltage sampling circuit;

[0010] The detection circuit includes a zero-sequence current transformer and an electronic switch module, the output end of the zero-sequence current transformer is electrically connected to the input end of the electronic switch module, the output end of the electronic switch module is electrically connected to the input end of the execution circuit, and the output end of the execution circuit is electrically connected to the circuit breaker;

[0011] The voltage sampling circuit includes a resistor Rn1, a resistor Rn2 and a voltage follower Un, one end of the resistor Rn1 is connected to one end of the electronic switch module, the other end of the resistor Rn1 is connected to one end of the resistor Rn2 and the positive electrode of the voltage follower Un, and the output end of the voltage follower Un is electrically connected to the signal input end of the communication control module.

[0012] Furthermore, the electronic switch module includes a leakage protection chip, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a rectifier A1, a thyristor and an execution circuit, the resistor R1 is connected in parallel between the VR pin of the leakage protection chip and one end of the resistor R2, the other end of the resistor R2 is connected to the IN pin of the leakage protection chip, one end of the resistor R3 is connected to one end of the DC side of the rectifier A1, the other end of the resistor R3 is connected to the first end of the thyristor, and the second end of the thyristor is connected to the OS pin of the leakage protection chip. The AC side of rectifier A1 is electrically connected to the execution circuit.

[0013] Furthermore, the communication control module includes a communication module, a microcontroller and a button module; the communication module includes a 4G module and a GSM module, the communication module is connected to the microcontroller through a serial port, the button module includes an alarm selection button and a reminder selection button, and the button module is electrically connected to the microcontroller.

[0014] Furthermore, the communication control module also includes a timer module and a temperature sensor, and the timer module and the temperature sensor are both electrically connected to the microcontroller.

[0015] Furthermore, the alarm module includes an audio-visual reminder module, which includes a voice chip, a speaker and an indicator light. The voice chip is electrically connected to the microcontroller through the serial port, the output end of the voice chip is electrically connected to the input end of the speaker, the indicator light is electrically connected to the microcontroller, and the GSM module is electrically connected to the microcontroller.

[0016] It can be seen from the above technical solution that the advantages of the utility model are:

[0017] The present application can send detection reminder information to the user's mobile terminal through the communication control module, and can automatically alarm for circuit safety. It has a high degree of intelligence and can record the detection interval through the timer module to timely remind the user to perform safety inspections, and can provide circuit safety reminders according to the alarm method selected by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0019] Figure 1 The utility model is a structural schematic diagram of an intelligent leakage protection switch.

[0020] Figure 2 Schematic diagram of the circuit structure of the circuit protection module. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the implementation modes and the accompanying drawings. Here, the illustrative implementation modes and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0022] refer to Figure 1 to Figure 2 ,like Figure 1 As shown, this embodiment provides an intelligent leakage protection switch, which includes: a housing, a circuit protection module, a communication control module and an alarm reminder module. The circuit protection module and the communication control module are integrated on the circuit board, and an input hole and an output hole are provided on one side of the housing. The circuit board is fixedly installed in the housing to ensure the safety of the circuit. The alarm reminder module is fixed on the surface of the housing. The circuit protection module is used to detect the electrical circuit and control the circuit breaker to disconnect. The electrical circuit can be detected in real time. Once a leakage is detected, the circuit breaker is controlled to disconnect to prevent electric shock. The communication control module is electrically connected to the circuit protection module and the alarm reminder module. The communication control module is used to collect circuit parameters and send parameter information to the mobile user terminal, as well as control the opening and closing of the alarm module. The alarm reminder module is used for electrical safety alarms and test reminders. The alarm reminder module can be triggered when an abnormal temperature is detected to issue a safety alarm and an automatic leakage protection detection reminder. The alarm mode includes two types: sound alarm and light alarm.

[0023] Specifically, the circuit protection module includes a detection circuit and a voltage sampling circuit. Figure 2As shown, the detection circuit includes a zero-sequence current transformer and an electronic switch module, the output end of the zero-sequence current transformer is electrically connected to the input end of the electronic switch module, the output end of the electronic switch module is electrically connected to the input end of the execution circuit, and the output end of the execution circuit is electrically connected to the circuit breaker; the voltage sampling circuit includes a resistor Rn1, a resistor Rn2 and a voltage follower Un, one end of the resistor Rn1 is connected to one end of the electronic switch module, the other end of the resistor Rn1 is connected to one end of the resistor Rn2 and the positive electrode of the voltage follower Un, and the output end of the voltage follower Un is electrically connected to the signal input end of the communication control module.

[0024] In this embodiment, the communication control module collects circuit parameters through the voltage sampling circuit and sends the parameter information to the mobile user end through the GSM module. The voltage sampling circuit can record the voltage change information of the circuit, and the mobile user end can receive the number of leakage protection times, which is convenient for the next step of analysis and safety inspection of the line.

[0025] The electronic switch module includes a leakage protection chip, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a rectifier A1, a thyristor and an execution circuit. The resistor R1 is connected in parallel between the VR pin of the leakage protection chip and one end of the resistor R2, the other end of the resistor R2 is connected to the IN pin of the leakage protection chip, one end of the resistor R3 is connected to one end of the DC side of the rectifier A1, the other end of the resistor R3 is connected to the first end of the thyristor, the second end of the thyristor is connected to the OS pin of the leakage protection chip, the resistor R1 is connected in parallel between the VR pin of the leakage protection chip and one end of the resistor R2, the other end of the resistor R2 is connected to the IN pin of the leakage protection chip, one end of the resistor R3 is connected to the DC side of the rectifier A1, the other end of the resistor R3 is connected to the first end of the thyristor, the second end of the thyristor is connected to the OS pin of the leakage protection chip, the resistor R2 is connected to the IN pin of the leakage protection chip, ...2 is connected to the IN pin of the leakage protection chip, the resistor R3 is connected to the IN pin of the leakage protection chip, the resistor R3 is connected to the IN pin of the leakage protection chip, the resistor R2 is connected to the IN pin of the leakage protection chip, the resistor R3 is connected to the IN pin of the leakage protection chip, the resistor R3 is connected to the IN pin of the leakage protection chip, the resistor R2 is connected to the IN pin of the leakage protection chip, the resistor R3 is connected to the IN pin of the leakage protection chip, the resistor R3 is connected to the IN pin of the leakage protection chip, the resistor R2 is connected to the IN pin of the leakage protection One end of capacitor C1 is connected to one end of capacitor C2, the other end of capacitor C1 is connected to the NR pin of the leakage protection chip, the third end of the thyristor is connected in parallel to the other end of capacitor C2, one end of capacitor C3, one end of capacitor C4 and one end of capacitor C5, the other end of capacitor C3 is connected to the OD pin of the leakage protection chip and the SC pin of the leakage protection chip, the other end of capacitor C4 is connected in parallel to the VR pin of the leakage protection chip, the other end of capacitor C5 is connected to the other end of resistor R3, and the AC side of rectifier A1 is electrically connected to the execution circuit.

[0026] Rectifier A1 adopts a diode single-phase bridge rectifier circuit. When the zero-sequence current transformer leaks, it generates an induced current and transmits the induced current signal to the leakage protection chip. The leakage protection chip controls the execution circuit through the thyristor. The execution circuit includes the coil L1 and the varistor RV. The leakage protection chip outputs a control signal to trigger the thyristor so that the coil L1 has current, generates a reverse magnetic flux, and the iron core opens under the action of the reaction spring, driving the circuit breaker to break. In this embodiment, it also includes a detection circuit, which is composed of a resistor R and a switch K1 for leakage detection. The leakage protection chip in this embodiment adopts the model VG54123, and the electronic switch module realizes the leakage protection function.

[0027] In this embodiment, the communication control module includes a communication module, a microcontroller and a key module; the communication module includes a 4G module and a GSM module, the communication module is connected to the microcontroller through a serial port, the key module includes an alarm selection key and a reminder selection key, the key module is electrically connected to the microcontroller, the alarm selection key is used to select the alarm mode, and the sound alarm or light alarm mode can be selected, and the reminder selection key is used to select the time interval information of the leakage detection. The communication control module also includes a timer module and a temperature sensor, the timer module and the temperature sensor are both electrically connected to the microcontroller, the temperature sensor is used to detect the temperature signal of the circuit board, and send the temperature signal to the microcontroller, and the timer module is used to record the time interval information.

[0028] The alarm module includes a sound and light reminder module, which includes a voice chip, a speaker and an indicator light. The voice chip is electrically connected to the microcontroller through the serial port, the output end of the voice chip is electrically connected to the input end of the speaker, the indicator light is electrically connected to the microcontroller, the indicator light is an LED indicator light, and the GSM module is electrically connected to the microcontroller. When the voice chip receives the voice control signal sent by the microcontroller, it controls the speaker to play the preset voice reminder information.

[0029] In this embodiment, the microcontroller can send alarm information and protection parameters to the user's mobile terminal through the 4G module and the GSM module. The microcontroller adopts the model STM32F103C8T6, the voice chip adopts WTN5055, WTN5055 is connected to the speaker through the pin AMP_N and the pin AMP_P, and the clock module adopts the DALLAS 12887 clock chip to provide a time standard for the system.

[0030] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent leakage protection switch, characterized in that: It includes: a housing, a circuit protection module, a communication control module and an alarm reminder module; The circuit protection module and the communication control module are integrated on the circuit board, an input hole and an output hole are provided on one side of the housing, the circuit board is fixedly installed in the housing, and the alarm reminder module is fixed on the surface of the housing; The circuit protection module is used to detect the electrical circuit and control the circuit breaker to disconnect; The communication control module is electrically connected to the circuit protection module and the alarm reminder module, and is used to collect circuit parameters, send parameter information to the mobile user terminal, and control the opening and closing of the alarm module; The alarm reminder module is used for electrical safety alarm and test reminder.

2. The intelligent leakage protection switch according to claim 1, characterized in that: The circuit protection module includes a detection circuit and a voltage sampling circuit; The detection circuit includes a zero-sequence current transformer and an electronic switch module, the output end of the zero-sequence current transformer is electrically connected to the input end of the electronic switch module, the output end of the electronic switch module is electrically connected to the input end of the execution circuit, and the output end of the execution circuit is electrically connected to the circuit breaker; The voltage sampling circuit includes a resistor Rn1, a resistor Rn2 and a voltage follower Un, one end of the resistor Rn1 is connected to one end of the electronic switch module, the other end of the resistor Rn1 is connected to one end of the resistor Rn2 and the positive electrode of the voltage follower Un, and the output end of the voltage follower Un is electrically connected to the signal input end of the communication control module.

3. The intelligent leakage protection switch according to claim 2, characterized in that: The electronic switch module includes a leakage protection chip, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a rectifier A1, a thyristor and an execution circuit. The resistor R1 is connected in parallel between the VR pin of the leakage protection chip and one end of the resistor R2, the other end of the resistor R2 is connected to the IN pin of the leakage protection chip, one end of the resistor R3 is connected to one end of the DC side of the rectifier A1, the other end of the resistor R3 is connected to the first end of the thyristor, the second end of the thyristor is connected to the OS pin of the leakage protection chip and the One end is connected to one end of the capacitor C2, the other end of the capacitor C1 is connected to the NR pin of the leakage protection chip, the third end of the thyristor is connected in parallel with the other end of the capacitor C2, one end of the capacitor C3, one end of the capacitor C4 and one end of the capacitor C5, the other end of the capacitor C3 is connected to the OD pin of the leakage protection chip and the SC pin of the leakage protection chip, the other end of the capacitor C4 is connected in parallel with the VR pin of the leakage protection chip, the other end of the capacitor C5 is connected to the other end of the resistor R3, and the AC side of the rectifier A1 is electrically connected to the execution circuit.

4. The intelligent leakage protection switch according to claim 1, characterized in that: The communication control module includes a communication module, a microcontroller and a key module; the communication module includes a 4G module and a GSM module, the communication module is connected to the microcontroller via a serial port, the key module includes an alarm selection key and a reminder selection key, and the key module is electrically connected to the microcontroller.

5. The intelligent leakage protection switch according to claim 4, characterized in that: The communication control module also includes a timer module and a temperature sensor, and both the timer module and the temperature sensor are electrically connected to the microcontroller.

6. The intelligent leakage protection switch according to claim 4, characterized in that: The alarm module includes a sound and light reminder module, which includes a voice chip, a speaker and an indicator light. The voice chip is electrically connected to the microcontroller through a serial port, the output end of the voice chip is electrically connected to the input end of the speaker, the indicator light is electrically connected to the microcontroller, and the GSM module is electrically connected to the microcontroller.

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