Non-contact electric leakage detector

Abstract

The utility model relates to a contact-free electric leakage detector. The contact-free electric leakage detector comprises a shell, a magnetoelectric induction device arranged in the shell and a signal processing unit connected with the magnetoelectric induction device, the magnetoelectric induction device comprises a conduction rod, a coil and a permanent magnet, the coil is installed on the inner surface of the shell, the conduction rod penetrates through the coil, the two ends of the conduction rod are connected with a first spring piece and a second spring piece respectively, the two ends of the first spring piece and the two ends of the second spring piece are connected with the shell, and the permanent magnet is installed on the shell. The permanent magnet is sleeved on the conduction rod, and the signal processing unit is connected with the magnetoelectric induction device through a lead. The device has the advantages of being compact in structure, high in safety and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, in particular to a contact-free leakage detector. Background Art

[0002] When firefighters are performing firefighting tasks, they often encounter various complex and dangerous environments. Among them, leakage of wires or electrical equipment is a major safety hazard. Existing leakage detectors require firefighters to carry equipment and come into close contact to detect, which poses a considerable safety hazard. When firefighters come into contact with these energized equipment, they may get an electric shock, which seriously threatens the safety of their lives. Despite the presence of insulating equipment and personal protective equipment, leakage may still occur due to environmental restrictions, equipment aging, or accidental damage during use. Utility Model Content

[0003] The utility model aims to provide a contact-free leakage detector which has compact structure, high safety and convenience.

[0004] A contactless leakage detector comprises a housing, a magnetoelectric induction device installed in the housing, and a signal processing unit connected to the magnetoelectric induction device;

[0005] The magnetoelectric induction device includes a conduction rod, a coil and a permanent magnet. The coil is installed on the inner surface of the shell. The conduction rod passes through the coil. The two ends of the conduction rod are respectively connected to a first spring sheet and a second spring sheet. The two ends of the first spring sheet and the second spring sheet are connected to the shell. The permanent magnet is sleeved on the conduction rod. The signal processing unit is connected to the magnetoelectric induction device through a lead wire.

[0006] In the above scheme, the conducting rod is connected to the shell through the first spring sheet and the second spring sheet, so that the conducting rod can swing left and right. When the current passes through the circuit, a magnetic field will be generated around it. That is to say, when the circuit has leakage, the leakage current will also generate a specific magnetic field around it. As the magnetic field changes, the magnetic field environment around the permanent magnet and the coil will also change, causing the conducting rod to cut the magnetic lines of force in the coil and the permanent magnet. According to Faraday's law of electromagnetic induction, this movement will induce an electromotive force on the conducting rod. The electromotive force induced on the conducting rod is connected to the signal processing unit through a lead. The signal processing unit will receive and process these electrical signals and determine whether there is leakage according to the change of the signal. The overall structure is light and compact. The contactless leakage detector can detect and identify leakage without the firefighters directly contacting the circuit under test, providing a safe and convenient leakage detection method for firefighters and other users, which is convenient for firefighters and other operators to carry and use.

[0007] Furthermore, the conductive rod includes a first connecting portion, a rod portion and a second connecting portion, the first connecting portion and the second connecting portion are respectively arranged at two ends of the rod portion, and the first connecting portion is connected to the lead wire.

[0008] In the above scheme, the conductive rod is divided into a first connecting part, a rod part and a second connecting part. This design makes the conductive rod more flexible and can better adapt to the usage requirements in different environments. The first connecting part of the conductive rod is connected to one end of the lead wire, and the other end of the lead wire is connected to the signal processing unit, so that the signal processing unit can easily receive the electrical signal induced on the conductive rod and perform corresponding processing and judgment.

[0009] Furthermore, the first spring sheet is hinged with two first dampers, one end of the first damper away from the first spring sheet is connected to the housing, and the second spring sheet is hinged with two second dampers, one end of the second damper away from the second spring sheet is connected to the housing.

[0010] In the above scheme, the first spring sheet and the second spring sheet are hinged to the first damper and the second damper respectively. This design can effectively reduce the vibration and swing of the conduction rod during the movement, and improve the stability and accuracy of the conduction rod. The first damper and the second damper act as buffers, which can reduce unnecessary vibrations generated during the movement and make the movement of the conduction rod smoother.

[0011] Furthermore, it also includes a circuit board, which is installed at one end of the shell and connected to the signal processing unit.

[0012] In the above solution, a circuit board is introduced and installed at one end of the shell, so that the integration of the entire system is improved, the structure is more compact, the possibility of external interference is reduced, and the stability and anti-interference ability of the system are improved.

[0013] Furthermore, the signal processing unit includes an input interface, a signal conditioning module, an analog-to-digital converter, a digital signal processor, a storage unit and an output interface, the input interface is connected to the signal conditioning module, the signal conditioning module is connected to the analog-to-digital converter, the analog-to-digital converter is connected to the digital signal processor, the digital signal processor is connected to the storage unit, and the storage unit is connected to the output interface.

[0014] In the above scheme, the connection of these functional modules, including input interface, signal conditioning module, analog-to-digital converter, digital signal processor, storage unit and output interface, constitutes a complete signal processing link. Through signal conditioning, analog-to-digital conversion, digital signal processing and other links, the signal sensed from the conductive rod can be accurately processed and analyzed, thereby improving the data processing capability and accuracy of the leakage detector.

[0015] Furthermore, the output interface is connected to the circuit board, and the circuit board is connected to a battery assembly.

[0016] In the above scheme, the battery assembly supplies power to the circuit board, so that the signal processing unit can operate normally. The battery assembly as a power supply method makes the installation and use of the leakage detector more convenient. There is no need to consider the layout and access of the power line too much, which reduces the complexity of the installation process and improves the flexibility and ease of use of the system. The battery assembly has a long service life and a fast charging speed, and can continuously provide power support for the contactless leakage detector.

[0017] Furthermore, an alarm device is installed at one end of the shell, and the alarm device is electrically connected to the circuit board.

[0018] In the above scheme, when the signal processing unit determines that there is a leakage, the alarm device can immediately receive and process the signal through the electrical connection with the circuit board, thereby achieving a rapid response to circuit abnormalities and alarm prompts, thereby serving as a warning to firefighters and other operators. The setting of the alarm device reduces potential safety hazards. By real-time monitoring of the circuit status and issuing an alarm, problems with the circuit can be discovered and resolved in a timely manner, avoiding potential dangers caused by circuit abnormalities and ensuring the safety of equipment and personnel.

[0019] Furthermore, the alarm device includes a warning light and a buzzer.

[0020] In the above scheme, the alarm device has both a warning light and a buzzer, which can warn the user visually and audibly at the same time. This multiple alarm prompt method improves the user's ability to perceive abnormal situations, and can promptly detect and respond to alarm signals even in a noisy environment or when the user is distracted.

[0021] Furthermore, it also includes a wireless communication module, which is connected to the signal processing unit.

[0022] In the above scheme, through the wireless communication module, the leakage detection system can be wirelessly connected to external devices or networks to achieve remote monitoring and control functions. Users can monitor the operating status of the leakage detector anytime and anywhere through mobile phone applications, computers and other devices, remotely obtain data and perform control operations, which improves the flexibility and convenience of the system.

[0023] The utility model discloses a contactless leakage detector with the beneficial effects of compact structure, high safety and convenience. The conduction rod is connected to the shell through the first spring sheet and the second spring sheet, so that the conduction rod can swing left and right. When the current passes through the circuit, a magnetic field will be generated around it. That is to say, when the circuit has leakage, the leakage current will also generate a specific magnetic field around it. With the change of the magnetic field, the magnetic field environment around the permanent magnet and the coil will also change, so that the conduction rod will cut the magnetic lines of force in the coil and the permanent magnet. According to Faraday's law of electromagnetic induction, this movement will induce an electromotive force on the conduction rod. The electromotive force induced on the conduction rod is connected to the signal processing unit through the lead wire. The signal processing unit will receive and process these electrical signals and judge whether there is leakage according to the change of the signal. The overall structure is light and compact. The contactless leakage detector can detect and identify leakage without the firefighter directly contacting the circuit to be tested, providing a safe and convenient leakage detection method for firefighters and other users, which is convenient for firefighters and other operators to carry and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is an overall schematic diagram of a contactless leakage detector according to an embodiment.

[0025] Figure 2 Schematic diagram of a conductive rod structure in one embodiment.

[0026] Figure 3 FIG. 4 is a block diagram of the electrical connection principle of an embodiment.

[0027] Explanation of the accompanying drawings: 1. Shell; 2. Conducting rod; 21. First connecting part; 22. Rod; 23. Second connecting part; 3. Coil; 4. Permanent magnet; 5. First spring sheet; 6. Second spring sheet; 7. First damper; 8. Second damper; 9. Circuit board; 10. Signal processing unit; 101. Signal conditioning module; 102. Analog-to-digital converter; 103. Digital signal processor; 104. Storage unit; 11. Lead; 12. Alarm device; 121. Buzzer; 122. Warning light; 13. Wireless communication module. DETAILED DESCRIPTION

[0028] The contact-free leakage detector of the utility model will be further described in detail below in conjunction with specific embodiments and drawings.

[0029] like Figure 1 and Figure 2As shown, in a preferred embodiment, a contactless leakage detector of the utility model comprises a housing 1, a magnetoelectric induction device installed in the housing 1, and a signal processing unit 10 connected to the magnetoelectric induction device. The magnetoelectric induction device comprises a conducting rod 2, a coil 3, and a permanent magnet 4. The coil 3 is installed on the inner surface of the housing 1. The conducting rod 2 passes through the coil 3. The two ends of the conducting rod 2 are respectively connected to a first spring sheet 5 and a second spring sheet 6. The two ends of the first spring sheet 5 and the second spring sheet 6 are connected to the housing 1. The permanent magnet 4 is sleeved on the conducting rod 2. The signal processing unit 10 is connected to the magnetoelectric induction device through a lead 11.

[0030] In the above embodiment, the conducting rod 2 is connected to the housing 1 through the first spring sheet 5 and the second spring sheet 6, so that the conducting rod 2 can swing left and right. When the current passes through the circuit, a magnetic field will be generated around it. That is to say, when the circuit has leakage, the leakage current will also generate a specific magnetic field around it. With the change of the magnetic field, the magnetic field environment around the permanent magnet 4 and the coil 3 will also change, so that the conducting rod 2 cuts the magnetic lines of force in the coil 3 and the permanent magnet 4. According to Faraday's law of electromagnetic induction, this movement will induce an electromotive force on the conducting rod 2. The electromotive force induced on the conducting rod 2 is connected to the signal processing unit 10 through the lead 11. The signal processing unit 10 will receive and process these electrical signals and judge whether there is leakage according to the change of the signal. The overall structure is light and compact. The contactless leakage detector can detect and identify leakage without the firefighter directly contacting the circuit to be tested, providing a safe and convenient leakage detection method for firefighters and other users, which is convenient for firefighters and other operators to carry and use.

[0031] The design of the contactless leakage detector fully considers the actual needs and usage scenarios of firefighters during the fire-fighting process, and integrates a variety of advanced technologies in one, aiming to provide a solid barrier for their safety, which not only helps to improve the operational efficiency of the fire-fighting industry.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments, the conductive rod 2 includes a first connection portion 21, a rod portion 22, and a second connection portion 23. The first connection portion 21 and the second connection portion 23 are respectively arranged at both ends of the rod portion 22, and the first connection portion 21 is connected to the lead 11. The conductive rod 2 is divided into the first connection portion 21, the rod portion 22, and the second connection portion 23. This design makes the conductive rod 2 more flexible and can better adapt to the use requirements in different environments. The first connection portion 21 of the conductive rod 2 is connected to one end of the lead 11, and the other end of the lead 11 is connected to the signal processing unit 10, so that the signal processing unit 10 can conveniently receive the electrical signal induced on the conductive rod 2 and perform corresponding processing and judgment.

[0033] like Figure 1As shown, in some embodiments, the first spring sheet 5 is hinged with two first dampers 7, and one end of the first damper 7 away from the first spring sheet 5 is connected to the housing 1, and the second spring sheet 6 is hinged with two second dampers 8, and one end of the second damper 8 away from the second spring sheet 6 is connected to the housing 1. The first spring sheet 5 and the second spring sheet 6 are hinged with the first damper 7 and the second damper 8 respectively. This design can effectively reduce the vibration and swing of the transmission rod 2 during the movement, and improve the stability and accuracy of the transmission rod 2. The first damper 7 and the second damper 8 act as a buffer, which can reduce unnecessary vibrations generated during the movement, so that the movement of the transmission rod 2 is more stable.

[0034] like Figure 1 As shown, in some embodiments, a circuit board 9 is further included, which is installed at one end of the housing 1 and connected to the signal processing unit 10. The circuit board 9 is introduced and installed at one end of the housing 1, so that the integration of the entire system is improved, the structure is more compact, the possibility of external interference is reduced, and the stability and anti-interference ability of the system are improved.

[0035] like Figure 1 and Figure 3 As shown, in some embodiments, the signal processing unit 10 includes an input interface, a signal conditioning module 101, an analog-to-digital converter 102, a digital signal processor 103, a storage unit 104, and an output interface. The input interface is connected to the signal conditioning module 101, the signal conditioning module 101 is connected to the analog-to-digital converter 102, the analog-to-digital converter 102 is connected to the digital signal processor 103, the digital signal processor 103 is connected to the storage unit 104, and the storage unit 104 is connected to the output interface. The input interface, the signal conditioning module 101, the analog-to-digital converter 102, the digital signal processor 103, the storage unit 104, and the output interface, the connection of these functional modules constitutes a complete signal processing link. Through signal conditioning, analog-to-digital conversion, digital signal processing and other links, the signal sensed from the conductive rod 2 can be accurately processed and analyzed, thereby improving the data processing capability and accuracy of the leakage detector.

[0036] Specifically, the input interface is used to receive the signal input to be processed; the signal conditioning module 101 is used to process and condition the input signal, including operations such as amplification, filtering, sampling, etc., to ensure that the input signal meets the requirements of subsequent processing and improve the signal quality and stability; the analog-to-digital converter 102 is a component that converts analog signals into digital signals, and converts the analog input signal into a digital form for subsequent digital signal processing and analysis; the digital signal processor 103 is used to process, calculate and analyze digital signals. The digital signal processor 103 can perform various algorithm operations, filtering, transformation and other operations to extract signal features or realize specific signal processing functions; the storage unit 104 is used to store data or intermediate results generated in the signal processing process, including cache storage, data storage, etc., to ensure the stability and reliability of the data; the output interface is used to output the processed signal results.

[0037] like Figure 1 As shown, in some embodiments, the output interface is connected to the circuit board 9, and the circuit board 9 is connected to a battery assembly. The battery assembly supplies power to the circuit board 9, so that the signal processing unit 10 can operate normally. The battery assembly is used as a power supply method, making the installation and use of the leakage detector more convenient. There is no need to consider the layout and access of the power supply line too much, which reduces the complexity of the installation process and improves the flexibility and ease of use of the system. The battery assembly has a long service life and a fast charging speed, and can continuously provide power support for the contactless leakage detector.

[0038] like Figure 1 and Figure 3 As shown, in some embodiments, an alarm device 12 is installed at one end of the housing 1, and the alarm device 12 is electrically connected to the circuit board 9. When the signal processing unit 10 determines that there is a leakage, the alarm device 12 can immediately receive and process the signal through the electrical connection with the circuit board 9, so as to achieve a rapid response and alarm prompt to the circuit abnormality, thereby warning firefighters and other operators. The setting of the alarm device 12 reduces potential safety hazards. By real-time monitoring of the circuit status and alarming, problems in the circuit can be discovered and solved in time, avoiding potential dangers caused by circuit abnormalities, and ensuring the safety of equipment and personnel.

[0039] like Figure 1 As shown, in some embodiments, the alarm device 12 includes a warning light 122 and a buzzer 121. The alarm device 12 has both a warning light 122 and a buzzer 121, and can simultaneously send an alarm to the user in both visual and auditory ways. This multiple alarm prompting method improves the user's ability to perceive abnormal situations, and can promptly detect and respond to alarm signals even in a noisy environment or when the user is distracted.

[0040] like Figure 1 and Figure 3 As shown, in some embodiments, a wireless communication module 13 is further included, and the wireless communication module 13 is connected to the signal processing unit 10. Through the wireless communication module 13, the leakage detection system can be wirelessly connected to an external device or network to achieve remote monitoring and control functions. Users can monitor the operating status of the leakage detector anytime and anywhere through mobile phone applications, computers and other devices, remotely obtain data and perform control operations, which improves the flexibility and convenience of the system.

[0041] The utility model discloses a contactless leakage detector, wherein a firefighter throws the leakage detector near live equipment. As the magnetic field changes, the magnetic field environment around the permanent magnet 4 and the coil 3 will also change, causing the conductive rod 2 to cut the magnetic lines of force in the coil 3 and the permanent magnet 4. According to Faraday's law of electromagnetic induction, this movement will induce an electromotive force on the conductive rod 2. The electromotive force induced on the conductive rod 2 is connected to the signal processing unit 10 through the lead 11. The signal processing unit 10 will receive and process these electrical signals, and determine whether there is a leakage according to the change of the signal. When a leakage occurs, the signal will be transmitted to the alarm device 12, and the buzzer 121 and the warning light 122 will react at the same time.

[0042] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A contactless leakage detector, characterized in that: It comprises a housing, a magnetoelectric induction device installed in the housing, and a signal processing unit connected to the magnetoelectric induction device; The magnetoelectric induction device includes a conduction rod, a coil and a permanent magnet. The coil is installed on the inner surface of the shell. The conduction rod passes through the coil. The two ends of the conduction rod are respectively connected to a first spring sheet and a second spring sheet. The two ends of the first spring sheet and the second spring sheet are connected to the shell. The permanent magnet is sleeved on the conduction rod. The signal processing unit is connected to the magnetoelectric induction device through a lead wire.

2. The contactless leakage detector according to claim 1, characterized in that: The conductive rod comprises a first connection portion, a rod portion and a second connection portion, wherein the first connection portion and the second connection portion are respectively arranged at two ends of the rod portion, and the first connection portion is connected to the lead wire.

3. The contactless leakage detector according to claim 1, characterized in that: The first spring sheet is hinged with two first dampers, one end of the first damper away from the first spring sheet is connected to the housing, and the second spring sheet is hinged with two second dampers, one end of the second damper away from the second spring sheet is connected to the housing.

4. The contactless leakage detector according to claim 1, characterized in that: It also includes a circuit board, which is installed at one end of the housing and connected to the signal processing unit.

5. The contactless leakage detector according to claim 4, characterized in that: The signal processing unit includes an input interface, a signal conditioning module, an analog-to-digital converter, a digital signal processor, a storage unit and an output interface, the input interface is connected to the signal conditioning module, the signal conditioning module is connected to the analog-to-digital converter, the analog-to-digital converter is connected to the digital signal processor, the digital signal processor is connected to the storage unit, and the storage unit is connected to the output interface.

6. The contactless leakage detector according to claim 5, characterized in that: The output interface is connected to the circuit board, and the circuit board is connected to a battery assembly.

7. The contactless leakage detector according to claim 6, characterized in that: An alarm device is installed at one end of the shell, and the alarm device is electrically connected to the circuit board.

8. The contactless leakage detector according to claim 7, characterized in that: The alarm device comprises a warning light and a buzzer.

9. The contactless leakage detector according to claim 1, characterized in that: It also includes a wireless communication module, which is connected to the signal processing unit.

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