Broken line comprehensive alarm device

Abstract

The utility model belongs to the technical field of electric power system protection electric appliances, and discloses a broken line comprehensive alarm device, which comprises a data judgment system, an alarm system, a ground resistance sampling and signal comparison operation processing unit and an unbalance and phase line reverse connection signal detection circuit unit. According to the utility model, the ground resistance sampling and signal comparison operation processing unit is used for filtering and converting the detection result of the power supply voltage control and detection unit, so that the CPU data acquisition and judgment unit is used for detecting the resistance value and the voltage value between N and PE; the device is used for field, movement and networking remote alarm when a protection grounding wire (also known as a protection null line) is broken due to man-made, omission or other accidental reasons, plays a positive early effective warning and prevention role in preventing accidental electrification of equipment and accidental electric shock of a human body, and realizes an effective role in preventing accidents.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power system protection electrical appliances, in particular to a wire breaking integrated alarm device. Background Art

[0002] The integrated alarm device for disconnection of protective earth wire (hereinafter referred to as the integrated alarm device) is mainly used in primary distribution boxes, secondary distribution boxes, tertiary distribution boxes (switch boxes), and various control boxes at construction sites. It is used as an alarm for disconnection of protective wire (also called protective neutral wire) caused by human error, omission or other unexpected reasons in the three-phase five-wire system (or local three-phase five-wire system derived from the three-phase four-wire system) of the power system, namely the TN-S zero connection protection system, and plays an active and effective preventive role in preventing accidental electric shock to people.

[0003] Current situation: The AV220 / 380V three-phase four-wire low-voltage power system with a neutral point directly grounded for temporary power supply projects at construction sites must comply with the following regulations:

[0004] ①Use a three-level power distribution system;

[0005] ② Adopt TN-S zero connection protection system;

[0006] ③Adopt leakage protection system.

[0007] 1. In the TN-S grounding protection system of the transformer power supply at the construction site, the metal casing of the electrical equipment must be connected to the protective neutral line. The protective neutral line should be drawn from the working grounding line, the neutral line on the power supply side of the distribution room (main distribution box), or the neutral line on the power supply side of the main leakage protector, such as Figure 1 shown.

[0008] 2. When the construction site shares the same power supply with the external power line, the grounding and zero protection of the electrical equipment should be consistent with the original system. It is not allowed to use zero protection for some equipment and ground protection for other equipment. When the TN system is used for zero protection, the working neutral line, the working neutral line (N line) must pass through the main leakage protector, and the protection neutral line (PE line) must be drawn from the repeated grounding point of the power supply zero line or the main leakage protector power supply side neutral line to form a local TN-S zero protection system, such as Figure 2 shown.

[0009] 3. Serious hazards and consequences of disconnecting the PE protection line and the PE protection neutral line

[0010] like Figure 3As shown in the figure, under normal circumstances, the metal shell of electrical equipment is grounded according to the specification requirements. When the insulation of electrical equipment or electrical lines is damaged or reduced, the leakage current will flow from the metal shell of the electrical equipment to the PE protection line, or to the ground through excellent repeated grounding measures. At this time, even if the human body accidentally touches the shell of the electrical equipment, because the human body resistance is usually much greater than the resistance from the metal shell of the electrical equipment to the PE protection line, most of the leakage current flows to the ground through the PE protection line, and the current flowing through the human body is relatively small, thus effectively preventing electric shock.

[0011] 4. Such as Figure 4 As shown, if the system PE protection line is abnormally disconnected or the metal shell of the electrical equipment is not effectively connected to the PE protection line, if the human body accidentally touches the shell of the electrical equipment, because the human body becomes the only conductor for the current to flow to the earth, the leakage current will flow to the earth through the human body, which can easily cause electric shock and cause personal injury. It should be noted that even if a leakage circuit breaker is installed in the distribution box, this type of protective appliance cannot be used as the only protection measure to protect people from electric shock. In case the leakage circuit breaker fails or the leakage protection current is set incorrectly, it cannot prevent people from being injured by electric shock.

[0012] Currently, traditional power system protection devices cannot fundamentally solve the above problems, so they need to be improved and optimized. Utility Model Content

[0013] The purpose of the utility model is to provide a disconnection integrated alarm device to solve the problems raised in the above background technology.

[0014] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wire breaking integrated alarm device, the wire breaking integrated alarm device comprises a data judgment system, an alarm system, a grounding resistance sampling and signal comparison operation processing unit and an unbalanced and phase line reverse connection signal detection circuit unit;

[0015] Among them, the ground resistance sampling and signal comparison operation processing unit is telecommunication connected to the data judgment system, the data judgment system is telecommunication connected to the unbalanced and phase line reverse connection signal detection circuit unit, and the data judgment system is telecommunication connected to the alarm system.

[0016] Preferably, the data judgment system includes a power supply voltage control and detection unit which is telecommunication connected to the power supply of the distribution box, and the power supply voltage control and detection unit is telecommunication connected to the ground resistance sampling and signal comparison operation processing unit and the unbalanced and phase line reverse connection signal detection circuit unit, and the power supply voltage control and detection unit is composed of a resistor R33, a varistor R35, and resistors R34, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46, R47; rectifier diodes D13, D15, D17, D19, and D14, D16, D18, D20; capacitors C14, C15, C16, and C17, C18, C19, C20, C21, C22, C23, C24, C25; reactances L4, L5, L6, an integrated circuit U10, an isolation optocoupler U9 and a transistor D21.

[0017] Preferably, the data judgment system further comprises a CPU data acquisition and judgment unit which is telecom connected to the ground resistance sampling and signal comparison operation processing unit, the CPU data acquisition and judgment unit is telecom connected to the power supply voltage control and detection unit, the CPU data acquisition and judgment unit is telecom connected to the unbalanced and phase line reverse connection signal detection circuit unit, and the CPU data acquisition and judgment unit is telecom connected to the alarm system;

[0018] The CPU data acquisition and judgment unit includes a relay K1 composed of a power supply VCC, a transistor Q1, a resistor P06, a relay K coil and a control output terminal of the single-chip microcomputer CPU.

[0019] Preferably, the ground resistance sampling and signal comparison operation processing unit is composed of a moving contact of a relay K1, a current limiting resistor R2, a voltage stabilizing diode, D4, capacitors C1, C2, C3, an inductor L1, a power supply Vcc, an operational amplifier U2A, voltage dividing resistors R4, R5, R6, a signal filtering capacitor C16 and an input terminal of a single-chip microcomputer CPU.

[0020] Preferably, the unbalanced and phase line reverse connection signal detection circuit unit includes a grounding protection line (PE line) and a system neutral line (N) composed of resistors R9, R10, R11, R12, R13, R14, R15, R16, capacitors C9, C10, C11, an operational amplifier UA3 and a power supply VCC.

[0021] Preferably, the alarm system comprises a data and status alarm unit, an IoT smart gateway and an antenna for wirelessly connecting the IoT smart gateway to the IoT cloud;

[0022] The data and status alarm unit is telecommunication-connected to the CPU data acquisition and judgment unit, the data and status alarm unit is telecommunication-connected to the antenna, and the data and status alarm unit is telecommunication-connected to the Internet of Things intelligent gateway via the antenna.

[0023] Preferably, the data and status alarm unit is composed of a control output terminal of a single-chip microcomputer CPU, a power supply VCC, resistors R1, R2, light-emitting diodes D1, D2, and a sound device LS1; the IoT smart gateway package is composed of a 4G IoT module and its input and output terminals, which is responsible for receiving signals and data, and controlling the data and status alarm unit to perform sound and light alarms and remote alarms.

[0024] The beneficial effects of the utility model are as follows:

[0025] 1. The utility model filters and converts the detection result of the power supply voltage control and detection unit through the ground resistance sampling and signal comparison operation processing unit, so that the CPU data acquisition and judgment unit detects the resistance value between N-PE. Compared with the traditional conversion device, the device can detect whether the neutral line introduced into the distribution box is broken while ensuring the normal power supply of the system, that is, whether the protection line PE (protective neutral line) in the distribution box is reliably connected to the protection line PE (protective neutral line) of the system, avoiding the electric shock caused by abnormal disconnection of the PE protection line or the metal shell of the electrical equipment is not effectively connected to the PE protection line, thereby protecting life safety.

[0026] 2. The utility model detects whether the live wire in the distribution box is connected reversely with the neutral wire (N) through the operation of the unbalanced and phase line reverse connection signal detection circuit unit. At the same time, it can detect whether the load equipment in the distribution box has a live wire overlap with the shell due to serious insulation damage and other reasons. If there is any abnormality, a serious alarm signal is issued to avoid electric shock to the staff and protect life safety.

[0027] 3. The utility model uses the cooperation of the antenna and the IoT smart gateway to enable the device to upload the monitoring parameters (such as the grounding protection line (PE line) status, voltage, whether the live wire is in the same state as the neutral line (N), and other safety parameters) collected by the CPU data acquisition and judgment unit to the IoT cloud. Compared with traditional devices, the device enables users to use the IoT to monitor and manage the power system through mobile phone APP, WeChat public account, mobile phone text messages, telephone, and remote PC to achieve the purpose of discovering safety hazards in advance, handling potential dangers in time, preventing the situation from escalating, and preventing disasters before they happen. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the TN-S system zero protection system when supplying power to a dedicated transformer;

[0029] Figure 2Schematic diagram of the neutral line extraction system of the local TN-S system zero protection system when the power supply is three-phase four-wire;

[0030] Figure 3 Schematic diagram of the working of the zero protection system of the TN-S system when supplying power to a dedicated transformer;

[0031] Figure 4 Schematic diagram of the error of disconnecting the PE line in the TN-S system grounding protection system and not re-grounding when supplying power to the transformer;

[0032] Figure 5 It is a schematic diagram of the structure of the utility model;

[0033] Figure 6 This is a schematic diagram of the circuit structure of the utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the power supply voltage control and detection unit of the utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the ground resistance sampling and signal comparison operation processing unit of the utility model;

[0036] Fig. 9 This is a schematic diagram of the structure of the CPU data acquisition and judgment unit of the utility model;

[0037] Fig.10 This is a schematic diagram of the structure of the data and status alarm unit of the utility model;

[0038] Fig.11 The utility model is a schematic diagram of the structure of the unbalanced and phase line reverse connection signal detection circuit unit. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] like Figures 5 to 11 As shown, the embodiment of the utility model provides a disconnection integrated alarm device, which includes a data judgment system, an alarm system, a ground resistance sampling and signal comparison operation processing unit, and an unbalanced and phase line reverse connection signal detection circuit unit;

[0041] Among them, the ground resistance sampling and signal comparison operation processing unit is connected to the data judgment system by telecommunication, the data judgment system is connected to the unbalanced and phase line reverse connection signal detection circuit unit by telecommunication, and the data judgment system is connected to the alarm system by telecommunication.

[0042] Among them, when the distribution box is carrying out warning work to prevent electric shock, the staff will connect the device to the power supply of the distribution box. At this time, the device enters the self-test state. After the self-test is completed, if there is no fault such as broken PE line, the green light will be on, and it will enter the normal working and sampling state. When the red light is flashing or always on, it means that the PE line of the line is broken or wrong phase. At this time, the staff will immediately check the cause and eliminate the fault. When the device is operating normally, the power supply voltage control and detection unit will receive the power supply of the distribution box, and regularly detect the voltage value between the neutral line (N) and the protection line (PE line). The detected voltage value will be transmitted to the CPU data acquisition and judgment unit to make it judge the voltage value. When the voltage value is abnormal, The data and status alarm unit starts to operate, sends out an alarm signal and the red light flashes. The alarm signal will continue to work until the detected voltage value returns to normal. When the voltage value is normal, the ground resistance sampling and signal comparison operation processing unit will connect the ground wire to detect the circuit, filter the detection result, and finally convert the detection structure to further calculate the resistance value, so as to detect whether the neutral line introduced into the distribution box is broken (that is, detect whether the protection line PE (protective neutral line) in the distribution box is reliably connected to the protection line PE (protective neutral line) of the system). When the resistance value is greater than the set value, the data and status alarm unit starts to operate, sends out an alarm signal and the red light flashes, thereby completing the alarm work.

[0043] The detection result of the power supply voltage control and detection unit is filtered and converted through the ground resistance sampling and signal comparison operation processing unit, so that the CPU data acquisition and judgment unit can detect the resistance value between N-PE. Compared with the traditional conversion device, this device can detect whether the neutral line introduced into the distribution box is broken (that is, whether the protection line PE (protective neutral line) in the distribution box is reliably connected to the protection line PE (protective neutral line) of the system) while ensuring the normal power supply of the system, avoiding electric shock caused by abnormal disconnection of the PE protection line or the metal shell of the electrical equipment is not effectively connected to the PE protection line, thereby protecting people's safety.

[0044] like Figure 7As shown, the data judgment system includes a power supply voltage control and detection unit which is connected to the power supply of the distribution box, and the power supply voltage control and detection unit is connected to the ground resistance sampling and signal comparison operation processing unit and the unbalanced and phase line reverse connection signal detection circuit unit. The power supply voltage control and detection unit is composed of a resistor R33, a varistor R35, and resistors R34, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46, and R47; rectifier diodes D13, D15, D17, and D19, and D14, D16, D18, and D20; capacitors C14, C15, C16, and C17, C18, C19, C20, C21, C22, C23, C24, and C25; reactances L4, L5, and L6, an integrated circuit U10, an isolation optocoupler U9, and a transistor D21.

[0045] Among them, the power supply voltage control and detection unit will receive the power supply from the distribution box, and regularly detect the voltage value between the neutral line (N) and the protection line (PE line). The detected voltage value will be transmitted to the CPU data acquisition and judgment unit to enable it to judge the voltage value.

[0046] like Fig. 9 As shown, the data judgment system also includes a CPU data acquisition and judgment unit that is telecommunication-connected to the ground resistance sampling and signal comparison operation processing unit, the CPU data acquisition and judgment unit is telecommunication-connected to the power supply voltage control and detection unit, the CPU data acquisition and judgment unit is telecommunication-connected to the unbalanced and phase line reverse connection signal detection circuit unit, and the CPU data acquisition and judgment unit is telecommunication-connected to the alarm system;

[0047] The CPU data acquisition and judgment unit includes a relay K1 composed of a power supply VCC, a transistor Q1, a resistor P06, a relay K coil and a control output terminal of the single-chip microcomputer CPU.

[0048] The voltage value or resistance value will be sampled by the CPU data acquisition and judgment unit, so that it can judge the voltage value. When the voltage value is abnormal, the data and status alarm unit starts to operate.

[0049] like Figure 8 As shown, the ground resistance sampling and signal comparison operation processing unit is composed of a moving contact of a relay K1, a current limiting resistor R2, a voltage stabilizing diode, D4, capacitors C1, C2, C3, a reactor L1, a power supply Vcc, an operational amplifier U2A, voltage dividing resistors R4, R5, R6, a signal filtering capacitor C16 and an input terminal of a single-chip microcomputer CPU.

[0050] Among them, the ground resistance sampling and signal comparison operation processing unit will connect the ground wire to detect the circuit, filter the detection results, and finally convert the detection structure to further calculate the resistance value, so as to detect whether the neutral line introduced into the distribution box is broken (that is, detect whether the protection line PE (protective neutral line) in the distribution box is reliably connected to the protection line PE (protective neutral line) of the system). When the resistance value is greater than the set value, the data and status alarm unit starts to operate, sends out an alarm signal and the red light flashes, thereby completing the alarm work.

[0051] like Fig.11 As shown, the unbalanced and phase line reverse connection signal detection circuit unit includes a grounding protection line (PE line) and a system neutral line (N) composed of resistors R9, R10, R11, R12, R13, R14, R15, R16, capacitors C9, C10, C11, an operational amplifier UA3 and a power supply VCC.

[0052] Among them, when the staff connects the device to the power supply of the distribution box, the unbalanced and phase reverse signal detection circuit unit starts to operate. At this time, the unbalanced and phase reverse signal detection circuit unit can detect whether the live wire in the distribution box is reversed with the neutral wire (N), and at the same time can detect whether the load equipment of the distribution box has a live wire overlap with the casing due to serious insulation damage. At this time, the CPU data acquisition and judgment unit will collect and judge the data detected by the unbalanced and phase reverse signal detection circuit unit. When an abnormality occurs, the data and status alarm unit starts to operate, sending out an alarm signal and the red light flashes, thereby completing the alarm work.

[0053] Compared with traditional devices, this device detects whether the live wire in the distribution box is connected reversely with the neutral wire (N) through the operation of the unbalanced and phase reverse connection signal detection circuit unit. At the same time, it can detect whether the load equipment in the distribution box has overlapping of the live wire and the casing due to serious insulation damage. If there is any abnormality, a serious alarm signal will be issued - the red light will be on, which avoids electric shock to the staff and protects life safety.

[0054] like Figure 5 As shown, the alarm system includes a data and status alarm unit, an IoT smart gateway, and an antenna that wirelessly connects the IoT smart gateway to the IoT cloud;

[0055] The data and status alarm unit is connected to the CPU data collection and judgment unit by telecommunication, the data and status alarm unit is connected to the antenna by telecommunication, and the data and status alarm unit is connected to the IoT intelligent gateway by telecommunication through the antenna.

[0056] Among them, when the device is operating normally, the IoT intelligent gateway uploads the monitoring parameters (such as the status of the grounding protection line (PE line) line, voltage, whether the live wire is in the same state as the neutral line (N) line, and other safety parameters) collected by the CPU data acquisition and judgment unit to the IoT cloud. Users can use the IoT to monitor and manage the power system protection grounding line system through mobile phone APP, WeChat public account, mobile phone text messages, telephone, and remote PC to achieve the purpose of discovering safety hazards in advance, dealing with potential dangers in time, preventing the situation from escalating, and preventing disasters before they happen.

[0057] Through the cooperation of antenna and IoT smart gateway, the device can upload the monitoring parameters collected by the CPU data acquisition and judgment unit (such as the status of the grounding protection line (PE line), voltage, whether the live wire is in line with the neutral line (N) status, and other safety parameters) to the IoT cloud. Compared with traditional devices, this device enables users to use the IoT to monitor and manage the power system through mobile phone APP, WeChat public account, mobile phone text messages, telephone, and remote PC to realize the purpose of discovering safety hazards in advance, dealing with potential dangers in time, preventing the situation from escalating, and preventing disasters before they happen.

[0058] like Fig.10 As shown, the data and status alarm unit is composed of the control output terminal of the single-chip CPU, the power supply VCC, the resistors R1, R2, the light-emitting diodes D1, D2, and the sound device LS1. The IoT smart gateway package is composed of the 4G IoT module and its input and output terminals, which is responsible for receiving signals and data, and controlling the data and status alarm unit to perform sound and light alarm and remote alarm.

[0059] Working principle and usage process:

[0060] When the distribution box is being warned to prevent electric shock, the staff will connect the device to the power supply of the distribution box. At this time, the device enters the self-test state. After the self-test is completed, the green light will be on when there is no fault such as broken PE line, and it will enter the normal working and sampling state. When the red light is flashing or always on, it means that the PE line of the line is broken or has a wrong phase fault. At this time, the staff will immediately check the cause and eliminate the fault. When the device is operating normally, the power supply voltage control and detection unit will receive the power supply of the distribution box and regularly detect the voltage value between the neutral line (N) and the protection line (PE line). The detected voltage value will be transmitted to the CPU data acquisition and judgment unit to make a judgment on the voltage value. When the voltage value is abnormal, the data The data and status alarm unit starts to operate, sends out an alarm signal and the red light flashes. The alarm signal will continue to work until the detected voltage value returns to normal. When the voltage value is normal, the grounding resistance sampling and signal comparison operation processing unit will connect the ground wire to detect the circuit, filter the detection result, and finally convert the detection structure to further calculate the resistance value, so as to detect whether the neutral line introduced into the distribution box is broken, that is, to detect whether the protection line PE (protection neutral line) in the distribution box is reliably connected to the protection line PE (protection neutral line) of the system. When the resistance value is greater than the set value, the data and status alarm unit starts to operate, sends out an alarm signal and the red light flashes, thereby completing the alarm work.

[0061] When the staff connects the device to the power supply of the distribution box, the unbalanced and phase reverse signal detection circuit unit starts to operate. At this time, the unbalanced and phase reverse signal detection circuit unit can detect whether the live wire in the distribution box is reversed with the neutral wire (N). At the same time, it can detect whether the load equipment in the distribution box has a live wire overlap with the casing due to serious insulation damage. At this time, the CPU data acquisition and judgment unit will collect and judge the data detected by the unbalanced and phase reverse signal detection circuit unit. When an abnormality occurs, the data and status alarm unit starts to operate, sending out an alarm signal and the red light flashes, thereby completing the alarm work.

[0062] When the device is operating normally, the IoT intelligent gateway uploads the monitoring parameters (such as the status of the protection grounding line (PE line) and voltage, whether the live wire is in the same state as the neutral line (N), and other safety parameters) collected by the CPU data acquisition and judgment unit to the IoT cloud. Users can use the IoT to monitor and manage the power system protection grounding line system through mobile phone APP, WeChat public account, mobile phone text messages, telephone, and remote PC to discover safety hazards in advance, deal with potential dangers in time, prevent the situation from escalating, and prevent disasters before they happen.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive disconnection alarm device, characterized in that: The line-break integrated alarm device comprises a data judgment system, an alarm system, a ground resistance sampling and signal comparison operation processing unit, and an unbalanced and phase line reverse connection signal detection circuit unit; Among them, the ground resistance sampling and signal comparison operation processing unit is telecommunication connected to the data judgment system, the data judgment system is telecommunication connected to the unbalanced and phase line reverse connection signal detection circuit unit, and the data judgment system is telecommunication connected to the alarm system.

2. The disconnection integrated alarm device according to claim 1, characterized in that: The data judgment system includes a power supply voltage control and detection unit which is connected to the power supply of the distribution box by telecommunication. The power supply voltage control and detection unit is connected to the ground resistance sampling and signal comparison operation processing unit and the unbalanced and phase line reverse connection signal detection circuit unit by telecommunication. The power supply voltage control and detection unit is composed of a resistor R33, a varistor R35, and resistors R34, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46, and R47; rectifier diodes D13, D15, D17, and D19, and D14, D16, D18, and D20; capacitors C14, C15, C16, and C17, C18, C19, C20, C21, C22, C23, C24, and C25; reactances L4, L5, and L6, an integrated circuit U10, an isolation optocoupler U9, and a transistor D21.

3. The disconnection integrated alarm device according to claim 1, characterized in that: The data judgment system also includes a CPU data acquisition and judgment unit that is telecommunication-connected to the ground resistance sampling and signal comparison operation processing unit, the CPU data acquisition and judgment unit is telecommunication-connected to the power supply voltage control and detection unit, the CPU data acquisition and judgment unit is telecommunication-connected to the unbalanced and phase line reverse connection signal detection circuit unit, and the CPU data acquisition and judgment unit is telecommunication-connected to the alarm system; The CPU data acquisition and judgment unit includes a relay K1 composed of a power supply VCC, a transistor Q1, a resistor P06, a relay K coil and a control output terminal of the single-chip microcomputer CPU.

4. The disconnection integrated alarm device according to claim 1, characterized in that: The ground resistance sampling and signal comparison operation processing unit is composed of a relay K1 moving contact, a current limiting resistor R2, a voltage stabilizing diode, D4, capacitors C1, C2, C3, a reactor L1, a power supply Vcc, an operational amplifier U2A, voltage dividing resistors R4, R5, R6, a signal filtering capacitor C16 and an input terminal of a single-chip microcomputer CPU.

5. The disconnection integrated alarm device according to claim 1, characterized in that: The unbalanced and phase line reverse connection signal detection circuit unit includes a grounding protection line and a system neutral line composed of resistors R9, R10, R11, R12, R13, R14, R15, R16, capacitors C9, C10, C11, an operational amplifier UA3 and a power supply VCC.

6. The integrated disconnection alarm device according to claim 1, characterized in that: The alarm system includes a data and status alarm unit, an IoT smart gateway, and an antenna that wirelessly connects the IoT smart gateway to the IoT cloud; The data and status alarm unit is telecommunication-connected to the CPU data acquisition and judgment unit, the data and status alarm unit is telecommunication-connected to the antenna, and the data and status alarm unit is telecommunication-connected to the Internet of Things intelligent gateway via the antenna.

7. The integrated disconnection alarm device according to claim 6, characterized in that: The data and status alarm unit is composed of the control output end of the single-chip CPU, the power supply VCC, the resistors R1, R2, the light-emitting diodes D1, D2, and the sound device LS1. The IoT smart gateway package is composed of a 4G IoT module and its input and output ends, which is responsible for receiving signals and data, and controlling the data and status alarm unit to perform sound and light alarm and remote alarm.

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