Acousto-optic alarm device and method for abnormal hanging of insulated line grounding wire

Abstract

The invention discloses a sound-light alarm device and method for abnormal hanging of a grounding wire of a 10kV insulated circuit, and the device comprises an integrated circuit and an improved grounding wire clamp, and the grounding wire clamp is used for making full contact with a conductor, and provides a judgment basis for the integrated circuit. Embedded pressure springs are symmetrically arranged in the box body, the pressure springs on two sides are respectively connected with ports of a detection module, and the detection module comprises a state unit, a control unit and an early warning unit; the state unit is communicated with the pressure springs on the two sides and used for sending a hanging state signal of the grounding wire to the control unit, and the control unit controls the operation state of the early warning unit; the corresponding sound-light alarm device is easy and convenient to operate, a worker only needs to turn on a device power source, whether hanging is correct or not can be directly fed back through an indicator lamp and a buzzer, and through the device, the reliability and safety of hanging the ground wire can be greatly improved. Therefore, workers are protected from being injured by electric shock due to the fact that the grounding wire is not hung in place.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance, and in particular to an audible and visual alarm device and method for abnormal hanging of an insulated line grounding wire. Background Art

[0002] The grounding wire is an important device for ensuring safety in the power system. Especially in the construction and maintenance of 10kV insulated lines, the correct installation of the grounding wire is crucial to protecting the safety of operators and power equipment. However, there are some shortcomings in the existing installation of grounding wires, especially when the installation is not in place (for example, it is installed on the insulation of the wire) or the contact is poor, it is difficult to detect and correct the error in real time, which may lead to serious safety hazards.

[0003] Disadvantages of existing grounding wire system:

[0004] Strong dependence on human observation: The existing grounding wire installation mostly relies on human observation, which is prone to omissions or misjudgments.

[0005] Lack of real-time feedback mechanism: Once the grounding wire is poorly installed or falls off during operation, the existing device cannot provide real-time feedback, increasing the safety risk of power operations.

[0006] For example, the invention patent with announcement number CN104716522B discloses an intelligent temporary grounding wire, which uses a pressure sensor to calculate the reliability of the hook hanging. It can not only detect in real time whether the temporary grounding wire is hung, but also judge whether it is hung reliably. However, it also has certain disadvantages. In order to ensure the accuracy of the measurement, the pressure sensor needs to be calibrated and maintained regularly, otherwise measurement errors will occur. In addition, the use of pressure sensors can only simply determine whether the grounding wire is hung tightly. The core function of the grounding wire is to contact the conductor, thereby effectively conducting current into the earth to protect life and property. Therefore, when encountering the problem of hanging the insulated wire, the invention cannot effectively judge whether the wire clamp of the grounding wire has successfully contacted an insulator or a non-insulator.

[0007] Therefore, a grounding wire hanging alarm device with intelligent monitoring function is designed to remind the staff in time when the grounding wire is not hung properly, reduce the risk, and improve the safety and reliability of power system maintenance work. Summary of the invention

[0008] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides an audible and visual alarm device and method for abnormal hanging of grounding wires of insulated lines.

[0009] Technical solution: According to the first aspect of the present invention, there is provided an audible and visual alarm device for abnormal hanging of the grounding wire of an insulated line, comprising an integrated circuit and an improved grounding wire clamp, the grounding wire clamp is used to clamp the connecting wire to provide an on / off signal of the integrated circuit. Two arc-shaped compression springs are symmetrically arranged inside the device, and the compression springs on both sides are respectively connected to the ports of the detection module, the detection module comprises a status unit, a control unit and an early warning unit;

[0010] The status unit is connected to the compression springs on both sides, and is used to send the hanging status signal of the grounding wire to the control unit, and the control unit controls the operating status of the early warning unit; the status unit includes a linear optocoupler, and the linear optocoupler presents different switching modes according to the hanging status of the grounding wire, thereby forming different signals to be sent to the control unit, and the input of the linear optocoupler is connected to the first control end. The first control end includes two ports, which are respectively connected to two compression springs. According to the hanging status signal of the grounding wire, it presents different circuit states, thereby controlling the switching mode of the linear optocoupler.

[0011] Further, including:

[0012] The input end of the linear optocoupler is also connected to a resistor, the other end of the resistor is connected to the control unit, and the resistor provides a limited current for the linear optocoupler.

[0013] Further, including:

[0014] The early warning unit includes a buzzer unit, and the control unit is used to control the light unit and the buzzer unit. The buzzer unit includes a first buzzer unit and a second buzzer unit. The first buzzer unit is used to control one state of the buzzer unit according to a first control signal transmitted by the control unit, and the second buzzer unit is used to control another state of the buzzer unit according to a second control signal transmitted by the control unit.

[0015] Further, including:

[0016] The early warning unit also includes a lighting unit, and the LED lights in the lighting unit include a green light and a red light.

[0017] Further, including:

[0018] The control unit adopts a single-chip microcomputer FT60F211-RB, and its corresponding 7-pin output passes through the first MOS tube to control the red light of the light unit, its corresponding 6-pin output passes through the third MOS tube to control the green light of the light unit, and its corresponding 5-pin output passes through the second MOS tube to control the sound of the buzzer unit.

[0019] Further, including:

[0020] It also includes a power module, which enters the control unit through the second control terminal. The power module is powered by a number of batteries, passes through the Q1 field effect tube protection circuit, and is filtered by the C1 and C2 capacitors to provide a stable power supply for the entire electric indicator light circuit.

[0021] On the other hand, the present invention also provides an audible and visual alarm method for abnormal hanging of an insulated line grounding wire (distinguishing between insulators and non-insulators), the method comprising:

[0022] Two compression springs are respectively connected to two ports of the first control end;

[0023] If the ground wire is correctly installed, that is, it contacts the non-insulator, the first control terminal is short-circuited, the linear optocoupler is turned on, and the corresponding installation status signal is transmitted to the single-chip microcomputer. The single-chip microcomputer controls the green light in the lighting unit to be always on, and emits a buzzer sound that lasts for a period of time to remind the staff that the installation is completed;

[0024] If the grounding wire falls off or has poor contact, that is, it contacts an insulator, the first control end is open, the linear optocoupler is turned off, and the corresponding hanging status signal is transmitted to the single-chip microcomputer. The single-chip microcomputer controls the red light in the lighting unit to flash and emit intermittent beeps to warn the staff.

[0025] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0026] Real-time monitoring and feedback: Through the sound and light alarm function, the installation status of the grounding wire can be detected in real time, and poor installation information can be fed back in time, greatly improving safety.

[0027] Easy to operate: The staff only needs to turn on the power of the device after climbing up the pole. Whether the hanging is correct or not will be directly fed back through the indicator light and buzzer, which simplifies the operation steps.

[0028] Low power consumption design: The device is powered by batteries, and the circuit is optimized to have lower power consumption, enabling long working hours and reducing the trouble of frequent battery replacement.

[0029] The present invention is suitable for the installation and detection of grounding wires during the construction and maintenance of insulated overhead lines of voltage levels of 10kV and below, and can also be extended to grounding protection of other types of power lines or equipment to improve the operational safety of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A circuit diagram corresponding to the sound and light alarm device described in an embodiment of the present invention;

[0031] Figure 2 A flow chart of the sound and light alarm method according to an embodiment of the present invention;

[0032] Figure 3 is a diagram illustrating circuit elements in a control circuit according to an embodiment of the present invention;

[0033] Figure 4 It is a schematic structural diagram of a grounding wire clamp and an integrated circuit according to an embodiment of the present invention;

[0034] Figure 5 for Figure 4 A magnified view of part A;

[0035] Figure 6 A schematic diagram of an integrated circuit according to this embodiment;

[0036] The figure includes: a grounding wire clamp head 1, an insulating rod 2, a compression spring 3, a buzzer 4, and a power module 5. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Aiming at the problem of poor installation of grounding wires in 10kV insulated lines, the present invention proposes an intelligent device based on sound and light alarm. Through the control of U1 single-chip microcomputer, real-time monitoring and feedback of the installation status of the grounding wire are realized, which improves the safety maintenance level of the power system. The device is easy to operate, highly practical, and has broad application prospects. In the future, with the advancement of technology, the application of such intelligent monitoring devices in the power industry will become more popular, which will help to further improve the operational safety and efficiency of the power system. Specifically:

[0039] The present invention discloses an audible and visual alarm device for abnormal hanging of ground wires of insulated lines (distinguishing between insulators and non-insulators), such as Figure 6 As shown, it includes an integrated circuit and an improved grounding clamp, the grounding clamp is used to fully contact the conductor to provide a judgment basis for the integrated circuit, the grounding clamp includes a head 1 and an insulating rod 2, the head 1 is hook-shaped, and two embedded compression springs 3 in an arc shape are symmetrically arranged inside, and the compression springs 3 on both sides are respectively connected to the ports of the detection module, and the detection module includes a status unit, a control unit and an early warning unit;

[0040] In this embodiment, the detection module can be arranged on one side of the grounding clamp or other suitable places, and this application does not limit it. Figure 4 and Figure 5As shown, in this embodiment, the control unit can be arranged inside the insulating rod 2 close to the grounding clamp head 1, and the power supply module 5 is arranged on one side of the grounding clamp head 1.

[0041] The status unit is connected to the compression springs 3 on both sides, and is used to send the hanging status signal of the grounding wire to the control unit, and the control unit controls the operating status of the early warning unit; the status unit includes a linear optocoupler, and the linear optocoupler presents different switching modes according to the hanging status of the grounding wire, thereby forming different signals to be sent to the control unit, and the input of the linear optocoupler is connected to the first control end. The first control end includes two ports, which are respectively connected to two compression springs 3, and present different circuit states according to the hanging status signal of the grounding wire, thereby controlling the switching mode of the linear optocoupler.

[0042] The input end of the linear optocoupler described in the embodiment of the present invention is further connected to a resistor R3, the other end of the resistor R3 is connected to the control unit, and the resistor R3 provides a limited current for the linear optocoupler.

[0043] Furthermore, the early warning unit includes a buzzer unit, and the control unit is used to control the light unit and the buzzer unit. The buzzer unit includes a first buzzer unit and a second buzzer unit. The first buzzer unit is used to control one state of the buzzer unit according to a first control signal transmitted by the control unit, and the second buzzer unit is used to control another state of the buzzer unit according to a second control signal transmitted by the control unit. The buzzer unit uses a buzzer 4 for buzzing reminders, and the buzzer 4 is arranged on the head 1 close to one side of the insulating rod 2.

[0044] Furthermore, the present embodiment also includes: the warning unit also includes a lighting unit, the LED lights in the lighting unit include a green light and a red light, and the red light and the green light are both arranged at one end of the hook-shaped head that is not connected to the insulating rod 2.

[0045] Furthermore, this embodiment also includes: the control unit adopts a single-chip microcomputer FT60F211-RB, and its corresponding 7-pin output passes through the first MOS tube to control the red light of the lighting unit, its corresponding 6-pin output passes through the third MOS tube to control the green light of the lighting unit, and its corresponding 5-pin output passes through the second MOS tube to control the sound of the buzzer unit.

[0046] Furthermore, this embodiment also includes: a power supply module 5, which enters the control unit through the second control terminal. The power supply module 5 is powered by a plurality of batteries, passes through the Q1 field effect tube protection circuit, and is filtered by the C1 and C2 capacitors to provide a stable power supply for the entire electric indicator light circuit.

[0047] like Figure 1 and Figure 3 As shown, the device is designed based on a single chip microcomputer (U1) and is installed inside the head of the grounding clamp. It uses sound and light signals to remind the grounding wire hanging status. The main circuit consists of a power module 5, an optical coupler control, a buzzer 4 and an LED. The following are the functions and working principles of each main component:

[0048] Power supply module: The device is powered by two No. 5 batteries. The power enters through the second control terminal P2 interface, passes through the Q1 field effect tube protection circuit to prevent the battery from reverse connection, and then is filtered through the C1 and C2 capacitors to provide a stable power supply for the entire electric indicator light circuit.

[0049] Optocoupler control: The resistor R3 provides current for the optocoupler, and the input of the optocoupler is connected to the first control terminal P7. When the ground wire is correctly hung, P7 is short-circuited, the optocoupler is turned on, and the control signal is transmitted to the microcontroller.

[0050] Single chip microcomputer U1: U1 single chip microcomputer is the core controller of the device, responsible for processing the signal from the optocoupler. The output of the chip 7 pin passes through the first MOS tube Q2 to control the red light to light up, the output of the chip 6 pin passes through the third MOS tube Q4 to control the green light to light up, and the output of the chip 5 pin passes through the second MOS tube Q3 to control the buzzer to sound. The operation of the LED indicator and the buzzer is controlled according to the hanging status.

[0051] The specific logic is:

[0052] When the ground wire is correctly installed, that is, it touches the non-insulator, P7 is short-circuited, the microcontroller controls the green light to be always on, and emits a beeping sound for 5 seconds to remind the staff that the installation is completed.

[0053] If the ground wire falls off or has poor contact, that is, it touches the insulator, P7 will be open, the microcontroller will control the red light to flash, and an intermittent beep will be issued to warn the staff.

[0054] LED and buzzer: The red and green indicator lights and buzzer are controlled by MOS tubes and driven by the output signal of the single-chip microcomputer to realize the alarm function in different states. The green light is always on for correct hanging, and the red light flashes for abnormal hanging.

[0055] On the other hand, Figure 2 As shown, the present invention also provides an audible and visual alarm method for abnormal hanging of an insulated line grounding wire (distinguishing between insulators and non-insulators), the method comprising:

[0056] Two compression springs are respectively connected to two ports of the first control end;

[0057] If the grounding wire is correctly installed (non-insulator), the first control terminal P7 is short-circuited, the linear optocoupler is turned on, and the corresponding installation status signal is transmitted to the single-chip microcomputer. The single-chip microcomputer controls the green light in the lighting unit to be always on, and emits a buzzing sound that lasts for a period of time to remind the staff that the installation is completed; in this embodiment, the green light is always on for 5s, and the continuous buzzing sound is set to 5s.

[0058] If the ground wire falls off or has poor contact (insulator), the first control terminal P7 is open, the linear optocoupler is turned off, and the corresponding hanging status signal is transmitted to the single-chip microcomputer. The single-chip microcomputer controls the red light in the lighting unit to flash and emits intermittent beeps to warn the staff.

[0059] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0060] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An audible and visual alarm device for abnormal hanging of grounding wires of insulated lines, characterized in that: It includes a grounding wire clamp, which is used to fully contact the conductor and provide a path for the electrical signal. Two embedded symmetrical compression springs are symmetrically arranged inside the grounding wire clamp. The compression springs are arc-shaped. The compression springs on both sides are respectively connected to the ports of the detection module. The detection module is an integrated circuit, including a status unit, a control unit and an early warning unit; The status unit is connected to the compression springs on both sides, and is used to send the hanging status signal of the grounding wire to the control unit, and the control unit controls the operating status of the early warning unit; the status unit includes a linear optocoupler, and the linear optocoupler presents different conduction modes according to the hanging status of the grounding wire, thereby forming different signals to be sent to the control unit, and the input of the linear optocoupler is connected to the first control end. The first control end includes two ports, which are respectively connected to two compression springs. According to the hanging status signal of the grounding wire, it presents different circuit states, thereby controlling the switching mode of the linear optocoupler.

2. The sound and light alarm device for abnormal hanging of the grounding wire of the insulated line according to claim 1 is characterized in that: The input end of the linear optocoupler is also connected to a resistor, the other end of the resistor is connected to the control unit, and the resistor provides a limited current for the linear optocoupler.

3. The sound and light alarm device for abnormal hanging of the grounding wire of the insulated line according to claim 2 is characterized in that: The early warning unit includes a buzzer unit, and the control unit is used to control the light unit and the buzzer unit. The buzzer unit includes a first buzzer unit and a second buzzer unit. The first buzzer unit is used to control one state of the buzzer unit according to a first control signal transmitted by the control unit, and the second buzzer unit is used to control another state of the buzzer unit according to a second control signal transmitted by the control unit.

4. The sound and light alarm device for abnormal hanging of the grounding wire of the insulated line according to claim 3 is characterized in that: The early warning unit also includes a lighting unit, and the LED lights in the lighting unit include a green light and a red light.

5. The sound and light alarm device for abnormal hanging of the grounding wire of the insulated line according to claim 4 is characterized in that: The control unit adopts a single-chip microcomputer FT60F211-RB, and its corresponding 7-pin output passes through the first MOS tube to control the red light of the light unit, its corresponding 6-pin output passes through the third MOS tube to control the green light of the light unit, and its corresponding 5-pin output passes through the second MOS tube to control the sound of the buzzer unit.

6. The sound and light alarm device for abnormal hanging of the grounding wire of the insulated line according to claim 1 is characterized in that: It also includes a power module, which enters the control unit through a second control terminal. The power module is powered by a plurality of batteries, passes through a field effect transistor protection circuit, and is filtered by two capacitors to provide a stable power supply for the entire electric indicator light circuit.

7. A sound and light alarm method for abnormal hanging of insulated line grounding wire according to claim 5, characterized in that: The method includes: Two compression springs are respectively connected to two ports of the first control end; If the ground wire is correctly installed, that is, it contacts the non-insulator, the first control terminal is short-circuited, the linear optocoupler is turned on, and the corresponding installation status signal is transmitted to the single-chip microcomputer. The single-chip microcomputer controls the green light in the lighting unit to be always on (for 5 seconds) and emits a buzzer sound for a period of time at the same time to remind the staff that the installation is correct; If the grounding wire falls off or has poor contact, that is, it contacts the insulator, the first control end is open, the linear optocoupler is turned off, and the corresponding hanging status signal is transmitted to the single-chip microcomputer. The single-chip microcomputer controls the red light in the lighting unit to be always on and emits a continuous beeping sound to warn the staff.

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