Electric leakage detection device and electric leakage detection system

Abstract

According to the electric leakage detection device disclosed by the invention, when the electric leakage phenomenon in the environment is detected, a response mechanism can be immediately started, the built-in buzzer is controlled to give out loud alarm sound, and meanwhile, the alarm lamp flickers at a specific frequency to attract the attention of surrounding personnel. In addition, specific information of electric leakage can be clearly displayed on a display screen of the device, so that a user can quickly know the current safety condition. In addition to the one-key help seeking function, a user can conveniently and rapidly send a help seeking signal to the outside and inform surrounding companions, the device is further provided with an advanced communication chip, the help seeking signal can be sent to far-end terminal equipment (such as a command center), and it is ensured that rescue information can be transmitted in time. And a warning signal sent by the terminal equipment can also be received. When the warning signal is received, the device controls the buzzer to sound and the warning lamp to flicker again, and detailed warning information is displayed on the display screen, so that a user can take countermeasures in time.

Description

Technical Field

[0001] This disclosure relates to the field of environmental leakage current detection technology, including but not limited to leakage current detection devices and leakage current detection systems. Background Technology

[0002] Leakage current detection technology aims to monitor and determine leakage current phenomena in power systems caused by insulation damage or line aging. It focuses on identifying whether there is electrical leakage in lines or equipment by detecting abnormal changes in electrical parameters such as current and voltage, thus ensuring the safety and stability of electrical system operation. It is applied to special environments such as industrial power systems, urban power supply networks, and mines. It includes signal acquisition units, signal processing units, and fault determination units, involving multiple technical aspects such as sensor placement, detection circuit design, electrical signal processing logic, and judgment methods.

[0003] One existing type of individual safety non-contact leakage current detector is equipped with a GPS module to make the accident area clearer and has a one-button SOS distress signal function, which can trigger a message to request help from nearby comrades in case of an emergency. However, in noisy environments or when comrades do not notice the distress signal, the opportunity for rescue may be missed. In addition, in large rescue sites or complex rescue environments, communication difficulties exist between rescuers, and the command center cannot accurately grasp the situation of emergencies, making it difficult to coordinate rescue deployment and adjust strategies in a timely manner. Summary of the Invention

[0004] In view of this, this disclosure provides a leakage current detection device, including: a front shell, a rear shell, a main board and a battery located between the front shell and the rear shell, the main board being fixed on the front shell, the battery being fixed on the rear shell, the main board and the battery being electrically connected, the main board being equipped with a detection chip, a buzzer, an alarm light and a display screen, and the front shell being provided with an emergency button. The detection chip detects whether there is a leakage current in the environment. When there is a leakage current in the environment, the motherboard controls the buzzer to sound, the alarm light to flash, and the leakage current information to be displayed on the screen. The motherboard also has a communication chip installed. The motherboard receives the emergency signal input by the distress button, and at the same time, the communication chip sends a distress signal to the terminal device; and / or, the communication chip receives the warning signal sent by the terminal device, the motherboard controls the buzzer to sound, the alarm light to flash, and the warning information to be displayed on the screen.

[0005] In some embodiments, a tilt sensing chip is also installed on the motherboard to detect the movement status of the leakage current detection device; when the leakage current detection device does not move within a set time, the motherboard controls the buzzer to sound, the alarm light to flash, and sends a distress signal to the terminal device.

[0006] In some embodiments, a positioning module mounting plate is provided on the top of the rear shell for mounting the positioning module; the positioning module is electrically connected to the motherboard for acquiring position information; the motherboard controls the display screen to display the position information.

[0007] In some embodiments, the front cover is also provided with a power button and a light button, the emergency button is located above the display screen, the power button and the light button are located below the display screen, and a light window is provided between the power button and the light button. A light is installed on the motherboard at the position corresponding to the light window.

[0008] In some embodiments, a sound outlet is provided in the middle of the front cover, below the power button and the lighting button. In the horizontal direction, the sound outlets are arranged in order of size from small to large to small. The buzzer is installed in the middle of the motherboard, corresponding to the position of the sound outlet. The buzzer is closest to the largest sound outlet.

[0009] In some embodiments, the detection chip is installed below the honey maker, located below the motherboard. Depending on the leakage distance and voltage intensity, the brightness of the alarm light and the volume of the buzzer show a gradual increasing or decreasing trend. The warning lights are installed at the four corners of the motherboard, and the front cover has warning light windows at the corresponding positions of the warning lights.

[0010] In some embodiments, the communication chip is mounted below the motherboard, near the rear cover, and is located on a different side of the motherboard from the detection chip; the communication antenna is located between the communication chip and the rear cover and is electrically connected to the motherboard.

[0011] In some embodiments, the communication chip receives a power-on screen and user information sent by the terminal device, and the motherboard controls the display screen to display the power-on screen and user information; and / or, the communication chip receives a modification signal sent by the terminal device, the motherboard modifies the detection mode or lighting mode, and the display screen displays the modified detection mode or lighting mode.

[0012] In some embodiments, after the front and rear shells are fastened together, the four corners are fixed with pins. The two pins at the top are located in the grooves at the top corners of the front and rear shells. After the front and rear shells are fixed, the middle part of the pin in the groove is exposed. A shoulder strap or hanging rope is installed in the middle of the pin.

[0013] This disclosure provides a leakage current detection system, including at least one leakage current detection device as shown above and a terminal device. When the at least one leakage current detection device detects an environmental leakage current, it activates an audible and visual alarm, displays leakage current information, and sends the leakage current information to the terminal device; and / or, the at least one leakage current detection device sends a distress signal to the terminal device, which receives the distress signal and generates location information; and / or, the terminal device sends a warning signal to the at least one leakage current detection device, which, upon receiving the warning signal, activates an audible and visual alarm and displays warning information.

[0014] The leakage current detection device designed in this application embodiment can immediately activate a response mechanism when a leakage current is detected in the environment. Specifically, it controls the built-in buzzer to emit a loud alarm sound, and simultaneously causes the alarm light to flash at a specific frequency to attract the attention of surrounding personnel. In addition, the device's display screen clearly displays specific information about the leakage current, allowing users to quickly understand the current safety situation. Besides having a one-button SOS function, which allows users to quickly send SOS signals to the outside world and notify nearby companions, the device is also equipped with an advanced communication chip. Through this communication chip, the device can send SOS signals to remote terminal devices (such as command centers), ensuring that rescue information can be transmitted in a timely manner. Moreover, the communication chip also has a receiving function, capable of receiving warning signals sent from terminal devices. Upon receiving such warning signals, the device will again control the buzzer to sound, the alarm light to flash, and display detailed warning information on the display screen, so that users can take timely countermeasures. It is worth mentioning that multiple leakage current detection devices can be centrally controlled by a terminal device. This design greatly facilitates the deployment and management of the devices, and also allows rescue strategies to be adjusted in a timely manner according to the actual situation, thereby improving rescue efficiency and safety. Attached Figure Description

[0015] Figure 1 Schematic diagrams of leakage current detection systems provided as examples; Figure 2 An exploded schematic diagram of a leakage current detection device provided as an example; Figure 3a A front view diagram of a leakage current detection device provided for some examples, with the front and rear housings removed; Figure 3b A rear view diagram of a leakage current detection device provided for some examples, with the front and rear housings removed; Figure 4 A schematic diagram of a leakage current detection device is provided for some examples. Detailed Implementation

[0017] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0018] It should be understood that when a component or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" other components or layers, it may be directly on, adjacent to, connected to, or coupled to other components or layers, or there may be intervening components or layers. Conversely, when a component is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other components or layers, there are no intervening components or layers.

[0019] To fully understand this disclosure, detailed steps and structures will be presented in the following description to illustrate the technical solutions of this disclosure. Preferred embodiments of this disclosure are described in detail below; however, other embodiments may also be implemented in addition to these detailed descriptions.

[0020] Figure 1 Schematic diagrams of leakage current detection systems provided as examples; Figure 2 An exploded schematic diagram of a leakage current detection device provided as an example; Figure 3a and Figure 3b Front and rear view diagrams of some example leakage current detection devices without the front and rear housings are provided. (Reference) Figure 1 This application provides a leakage current detection system, including at least one leakage current detection device and a terminal device. When the at least one leakage current detection device detects an environmental leakage current, it activates an audible and visual alarm, displays leakage current information, and sends the leakage current information to the terminal device; and / or, the at least one leakage current detection device sends a distress signal to the terminal device, which receives the distress signal and generates location information; and / or, The terminal device sends a warning signal to at least one leakage current detection device. When at least one leakage current detection device receives the warning signal, it activates an audible and visual alarm and displays a warning message. At this time, the terminal device activates the forced audible and visual alarm mechanism.

[0021] When at least one leakage current detection device sends a distress signal to the terminal device, the terminal device receives the distress signal and generates location information. At this time, the terminal device (which may be the device in the command center) determines whether to send warning signals to other leakage current detection devices based on the distress signal from the leakage current detection device; and / or, to provide emergency assistance to the user of the leakage current detection device based on the distress signal. The distress signal may include an automatic alarm signal or a manual alarm signal (also known as a forced alarm signal).

[0022] In some embodiments, during an SOS emergency call, the terminal device displays alarm information synchronously. This can be achieved by manually activating the SOS emergency call function (i.e., manually pressing the SOS button), and the terminal device simultaneously displays: Forced Alarm or Manual Alarm; or by activating the SOS emergency call function statically after 30 seconds, and the terminal device simultaneously displays: Automatic Alarm.

[0023] The terminal device can be a computer or mobile phone, and an app or software can be installed on the terminal device to control multiple leakage current detection devices. Data from multiple leakage current detection devices (such as location information, user information, current operating mode, etc.) can be uploaded to the terminal device in real time and on a regular schedule. The terminal device can display the status data of each leakage current detection device intuitively. Users can also operate, edit, and issue commands to each leakage current detection device through the app or software on the terminal device. Editing and issuing commands can include: modifying and uploading the startup screen and user information, modifying the detection mode and lighting mode, sending warning messages, and sending electronic manuals and operation videos to the device. User information can include the user's organization, name, etc. The startup screen can be text or animation.

[0024] In addition to the aforementioned situations, the terminal device will send a warning signal to at least one leakage current detection device. When the terminal device (i.e., the command center) detects other emergencies, it can also send a warning signal to all leakage current detection devices so that users can evacuate or avoid danger in an emergency.

[0025] Audible and visual alarms can consist of flashing lights at a specific frequency while a continuous alarm sounds. Leakage information can include the location of the leakage (e.g., latitude and longitude), the distance and direction from the leakage location to the detection device, and the intensity of the leakage. Warning messages can be text warnings, such as "Danger, evacuate immediately," "Explosion possible, take cover," or "Strong acid present, take precautions," or other non-warning messages. The terminal device can edit the content of the warning messages.

[0026] Combination Figure 2The leakage current detection device may include: a front shell 1, a rear shell 2, a main board 6 located between the front shell and the rear shell, and a battery 7. The main board 6 is fixed on the front shell 1, and the battery 7 is fixed on the rear shell 2. The main board 6 and the battery 7 are electrically connected. The main board 6 is equipped with a detection chip 15, a buzzer 10, an alarm light 17, and a display screen 16. The front shell 1 is equipped with a distress button (i.e., an SOS button) 103. The detection chip 15 is used to detect whether there is leakage current in the environment. When there is leakage current in the environment, the main board 6 controls the buzzer 10 to sound, the alarm light 17 to flash, and the display screen 16 to display leakage current information. The main board 6 is also equipped with a communication chip 8. The main board 6 is used to receive emergency signals input by the distress button 103, and the communication chip 8 is used to send distress signals to terminal devices. The communication chip 8 is also used to receive warning signals sent by terminal devices. When a warning signal is received, the main board 6 controls the buzzer 10 to sound, the alarm light 17 to flash, and the display screen 16 to display warning information.

[0027] The communication chip 8 receives the power-on screen and user information sent by the terminal device, and the motherboard 6 controls the display screen 16 to display the power-on screen and user information; or, the communication chip 8 receives the modification signal sent by the terminal device, and the motherboard 6 modifies the detection mode or lighting mode according to the modification signal, and the display screen 16 displays the modified detection mode or lighting mode.

[0028] The leakage current detection device in this application primarily detects low-voltage and high-voltage leakage in work and rescue environments, and is suitable for harsh environments such as fire fighting, railways, power, steel, oil fields, and water conservancy. It can accurately and quickly detect leakage in circuits, detecting low-voltage and high-voltage leakage in work and rescue environments to help workers identify potential electrical safety hazards in a timely manner and ensure the safety of the work environment. In various situations such as emergency rescue, power line inspection, and emergency relief, the leakage current detector plays a crucial role in effectively preventing accidents caused by leakage and ensuring the safety of personnel and equipment. It also has broad application prospects in multiple fields, including fire rescue, flood control and drainage, underground pipeline inspection, fire scene investigation, and building safety assessment after natural disasters such as earthquakes and typhoons. Furthermore, the leakage current detection device can effectively identify the presence of leakage and accurately locate the specific location of the leaking power source. It also demonstrates its important value in the field of public safety, especially in situations such as swimming pools, nighttime search and rescue operations, and emergency accident rescue, where it can promptly detect potential leakage risks, thereby effectively preventing electric shock accidents.

[0029] In some embodiments, the front shell 1 and the rear shell 2 can be manufactured using an overmolding technique combining polycarbonate (PC) and thermoplastic elastomer (TPE) materials, ensuring the structural strength and durability of the product to meet the application requirements of extreme working environments. When the front shell 1 and the rear shell 2 are snapped together, they form a rectangular protective shell with chamfered corners. The combination of straight lines and chamfered elements creates a robust and professional industrial equipment image.

[0030] In some embodiments, the communication chip can be a 2.4G / 4G / 5G wireless communication chip or a Bluetooth chip. 2.4G / 4G / 5G wireless communication technology or Bluetooth technology ensures the reliability of real-time monitoring and remote control functions, enabling the rapid transmission of critical information in emergency situations, thereby effectively shortening response time, improving rescue efficiency, and providing comprehensive safety protection for personnel. Due to the limited communication range of Bluetooth, 2.4G / 4G / 5G wireless communication chips are preferred.

[0031] In some embodiments, the detection chip 15 includes a current or voltage signal detection module and a signal processing module. Utilizing a highly sensitive, long-range detection chip, it can detect AC leakage in the environment at frequencies between 20Hz and 100Hz. The leakage detection device can trigger corresponding audible and visual alarms based on detected differences in electrical strength. Specifically, different electrical strengths will cause changes in the strength and frequency of the alarm signal; where higher electrical strength results in a faster buzzer frequency and a faster flashing frequency of the alarm light. Leakage information can include whether there is leakage and leakage strength information, as well as leakage location information, such as latitude and longitude, distance and orientation information from the leakage location to the current leakage detection device, and leakage strength information. The leakage strength can be categorized into high, medium, and low levels based on the electrical intensity. In some implementations, the leakage detection device can be set to three detection modes: high, medium, and low.

[0032] In some embodiments, the alarm light 17 can employ four 2812 RGB LED beads, featuring multiple lighting modes and the ability to switch the corresponding signal light according to different alarm states. These LED beads have high luminous efficiency, long lifespan, and excellent energy-saving characteristics. The LED beads can display yellow, green, and red. During device self-test, the light is yellow; when no leakage is detected, the light is green; and when leakage is detected, the light is red. This uses a common traffic light three-color pattern for easy differentiation by personnel. The use of high-penetration, high-visibility red for alarm provides effective lighting and warning functions for rescue, search, and on-site personnel. It should be noted that when electricity is detected in the environment (i.e., no leakage occurs), the LED beads also display red, and the flashing frequency and buzzer sound / frequency are lower compared to a leakage situation. When there is no electricity in the environment, the light beads can also display green.

[0033] In some embodiments, the leakage current detection device has a one-button SOS emergency call function, which allows personnel to manually trigger an SOS distress signal when encountering an emergency, or the leakage current detection device will automatically activate the SOS emergency call if the operator remains stationary for more than 30 seconds without performing any operation.

[0034] In this embodiment, a tilt sensing chip (not shown) is also installed on the motherboard 6. The tilt sensing chip is used to detect the movement status of the leakage current detection device. When the leakage current detection device does not move within a set time, the motherboard 6 controls the buzzer 10 to sound and the alarm light 17 to flash, while simultaneously sending a distress signal to the terminal device. If the operator remains static, for example, for 30 seconds without moving, the leakage current detection device will automatically activate the SOS emergency call mechanism. Once the personnel or the leakage current detection device begin to move again, the SOS emergency call function will be terminated, and the system will return to the previous operating mode.

[0035] refer to Figure 2 In this embodiment, a positioning module mounting plate 201 is provided on the top of the rear shell 2 for mounting the positioning module 9. The positioning module 9 is electrically connected to the motherboard 6 and is used to acquire location information. The motherboard 6 is also used to control the display screen 16 to display the location information. The positioning module 9 can be an antenna for receiving and transmitting satellite signals, such as a GPS / BeiDou antenna, for displaying latitude and longitude information in real time.

[0036] refer to Figure 2The front cover 1 also features a power button 101 and a lighting button 102. An SOS button 103 is located above the display screen 16, while the power button 101 and lighting button 102 are located below the display screen 6. A lighting window is positioned between the power button 101 and the lighting button 102, and a light is installed on the motherboard 6 corresponding to the position of the lighting window. This arrangement ensures that the SOS button 103 and the power button 101 are located in different positions from the lighting button 102, preventing accidental presses. Furthermore, the SOS button 103 is significantly larger than the lighting button 102 and the power button 101, making it more prominent both visually and tactilely. Specifically, the SOS button 103's area and height are significantly greater than the lighting button 102 and the power button 101, making it easier to quickly identify and press in an emergency. Furthermore, the SOS button 103, power button 101, and light button 102 are all carefully designed with icons that have different tactile sensations. These icons are distinguished by unique textures and shapes, greatly facilitating blind operation. Even without looking at the buttons, users can accurately identify the function of each button through the tactile sensation of their fingertips, effectively avoiding unnecessary operations caused by accidental touches and ensuring that the SOS function can be activated quickly and accurately in an emergency. The display screen 16 is fixed to the front shell 1 and the motherboard 6 by a display screen bracket 3. The front shell 1 has an exposed display window 105 for the display screen 16.

[0037] Continue to refer to Figure 2 In the center of the front cover 1, below the power button 101 and the illumination button 102, there is a sound hole 104. Horizontally, the sound holes 104 are arranged in order of size, from smallest to largest to smallest. The buzzer 10, corresponding to the sound hole 104, is installed in the center of the motherboard 6. The buzzer 10 is closest to the largest sound hole to ensure optimal sound output efficiency and effect, while also effectively preventing dust from entering the front cover 1. The detection chip 15 is installed below the buzzer 10, located below the motherboard 6. Depending on the leakage distance and voltage intensity, the brightness of the alarm light 17 and the volume of the buzzer 10 gradually increase or decrease. The alarm light 17 is installed at the four corners of the motherboard 6, and an alarm light window 106 is provided on the front cover 1 corresponding to the position of the alarm light 17.

[0038] In this embodiment, the leakage current detection device has a power-on self-test function. Specifically, pressing and holding the power button for 3 seconds activates the leakage current self-test function, which defaults to a low-level detection mode. The self-test program is then executed, and the display screen 16 displays "Device self-testing in progress." Simultaneously, the LED beads flash rapidly with yellow light (frequency 3-5Hz), and the buzzer 10 sounds once per second. After the self-test is complete, if no abnormality is found, the display screen 16 switches to the power-on screen for 2 seconds, then automatically transitions to the user information interface, also for 2 seconds. Subsequently, the operation interface is accessed. In a leakage-free environment, the LED beads flash slowly with green light once per second, and the buzzer 10 stops sounding. If a leakage is detected, the LED beads begin flashing red light at a high frequency (frequency 8-10Hz), and the buzzer 10 simultaneously emits a sharp alarm sound, with the flashing frequency and sound intensity gradually increasing according to the leakage distance and voltage.

[0039] The operation of the power button 101, the light button 102, and the SOS button 103 can be described as follows: (1) Power button 101: After completing the device self-test procedure, activate the leakage current detection function and enter the low position. Then, press the power button 101 for the first time to switch the device to the medium position, and press the power button 101 for the second time to switch to the high position. To turn off the device, press and hold the power button for 3 seconds. The above operations can be repeated. When the terminal device activates the forced audible and visual alarm mechanism, double-clicking the power button 101 will terminate the current alarm state and restore the previous operating mode. Other methods to clear the alarm: Perform a forced shutdown through the terminal device.

[0040] (2) SOS key 103: Pressing the SOS key 103 for the first time activates the audible and visual alarm. The LED beads emit a red flashing signal at a certain frequency (e.g., 8-10Hz), and the buzzer emits a synchronized sound. Pressing the SOS key 103 again turns off the device. If the SOS key is pressed continuously for 3 seconds, it switches to the red-green alternating flashing mode. In the red-green alternating flashing mode, the four LEDs perform the following actions in sequence: the two red LEDs on the left flash twice, the two green LEDs on the right flash twice, and then the red and green LEDs flash twice simultaneously. This process repeats. If the SOS emergency help signal lasts for more than 180 seconds, the SOS emergency help function cannot be automatically deactivated if personnel or equipment are moved. The function must be deactivated by double-clicking the SOS key 103 or by manually operating the terminal device. It should be noted that when the SOS key and the lighting key are independently activated, the leakage current detection device will skip the self-test procedure and directly enter the power-on screen and user information. The self-test procedure can only be started when the power button is turned on.

[0041] (3) Lighting button 102: Pressing the lighting button 102 once activates the high-light mode, pressing it twice activates the low-light mode, and pressing it three times turns off the light source. This process repeats continuously. When the terminal device initiates text message transmission, double-clicking the lighting button 102 means that the device has successfully received the text message and will return to the previous operating state. It should be noted that when operating the lighting button 102 alone, pressing the lighting button continuously for 3 seconds will cause the LED to emit white light, realizing the energy-saving lighting mode. However, this function will no longer be effective when the power button 101 and the SOS button 103 are turned on or activated at the same time.

[0042] In this embodiment, when the lighting button 102 and the SOS button 103 are both active, the device cannot activate the leakage current detection function; in this case, these two buttons operate independently. All three buttons are independently operable and do not interfere with each other. When any switch is turned on or activated, the communication function is simultaneously enabled.

[0043] If all three buttons are activated simultaneously, the display screen will prioritize showing the operation command for the power button 101, followed by the operation command for the second button, in that order. The operation command for the third button will not be displayed; that is, the command for the third button will not be executed unless the device is turned off and restarted. When the lighting function is activated alone (by pressing the lighting button 102 first), the device does not need to perform a self-test procedure and will directly enter the power-on screen display stage.

[0044] Combination Figure 3a and Figure 3b The communication chip 8 is installed below the motherboard 6, near the rear shell 2, and is located on different sides of the motherboard 6 from the detection chip 15; the communication antenna 11 is located between the communication chip 8 and the rear shell 2, and is electrically connected to the motherboard 6.

[0045] Combination Figure 2 , Figure 3a and Figure 3b A battery mounting plate 202 is located in the middle of the inner wall of the rear shell 2, and the battery 7 is snapped into the battery mounting plate 202. The battery 7 can be a polymer lithium-ion battery, which has no memory effect, no environmental pollution, high energy density, long cycle life and excellent safety and stability performance.

[0046] Multiple threaded holes are provided in the middle of the outer wall of the rear shell 2 for mounting the back clip. A sealing ring 4 is provided at the joint between the front shell 1 and the rear shell 2 to ensure the airtightness of the device. A charging plug 5 is also provided at the bottom of the front shell 1 to seal the charging port, such as the TYPE-C port, thereby sealing the entire shell.

[0047] After the front shell 1 and the rear shell 2 are fastened together, the four corners are secured with pins 14. The two pins 14 at the top are located in the grooves at the top corners of the front shell 1 and the rear shell 2. After the front shell 1 and the rear shell 2 are secured, the middle part of the pin 14 in the groove is exposed, and a shoulder strap or hanging rope is installed in the middle of the pin 14. The pin 14 can be a roll pin. Thus, the device supports multiple usage modes such as handheld, chest hanging, and clip-on, making it easy to carry.

[0048] The leakage current detection device in this embodiment also has a battery power monitoring and display function. When the battery voltage drops below 20% of the rated value, a low-voltage alarm mechanism will be triggered. If the battery power is severely insufficient, it will not be able to start up again. While sending leakage current information and / or distress signals to the terminal device, the leakage current detection device can also send battery voltage, ambient temperature, and atmospheric pressure information to the terminal device, so that the command center at the terminal device can have a more comprehensive understanding of the surrounding environment and make more informed decisions.

[0049] The leakage current detection device in this embodiment integrates multiple practical functions, including communication technology, audible and visual alarms, emergency SOS distress signals for both nearby and remote areas, and emergency lighting. Upon detecting a leakage current in the environment, it immediately activates a response mechanism. Specifically, it controls a built-in buzzer to emit a loud alarm sound and simultaneously causes the alarm light to flash at a specific frequency to attract the attention of those nearby. Furthermore, the device's display screen clearly shows specific information about the leakage current, allowing users to quickly understand the current safety situation. In addition to a one-button distress signal function, enabling users to quickly send distress signals and notify those around them, the device is also equipped with an advanced communication chip. Through this chip, the device can send distress signals to remote terminal devices (such as command centers), ensuring timely delivery of rescue information. Moreover, the communication chip also has a receiving function, capable of receiving warning signals from terminal devices. Upon receiving such a warning signal, the device will again control the buzzer to sound, the alarm light to flash, and display detailed warning information on the screen, allowing users to take timely action. It is worth mentioning that multiple leakage current detection devices can be centrally controlled by a terminal device. This design greatly facilitates the deployment and management of the devices, and also enables rescue strategies to be adjusted in a timely manner according to the actual situation, thereby improving rescue efficiency and safety.

[0050] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this disclosure. Therefore, "in one embodiment" or "in one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. The above-mentioned embodiment numbers are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0051] The above description is merely a preferred embodiment of this disclosure and does not limit the patent scope of this disclosure. Any equivalent structural transformations made using the contents of this specification and drawings under the inventive concept of this disclosure, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this disclosure.

Claims

1. A leakage current detection device, comprising: The system comprises a front shell, a rear shell, a main board and a battery located between the front and rear shells, with the main board fixed to the front shell and the battery fixed to the rear shell. The main board and battery are electrically connected. The main board is equipped with a detection chip, a buzzer, an alarm light, and a display screen. An emergency call button is located on the front shell. Its distinguishing feature is... The detection chip detects whether there is a leakage current in the environment. When there is a leakage current in the environment, the motherboard controls the buzzer to sound, the alarm light to flash, and the leakage current information to be displayed on the screen. The motherboard also contains a communication chip. The motherboard receives emergency signals input via the SOS button, and simultaneously the communication chip sends SOS signals to the terminal device; and / or, The communication chip receives the warning signal sent by the terminal device, the motherboard controls the buzzer to sound, the alarm light to flash, and the warning information to be displayed on the screen.

2. The leakage current detection device according to claim 1, characterized in that, The motherboard is also equipped with a tilt sensor chip, which detects the movement of the leakage current detection device. If the leakage current detection device does not move within a set time, the motherboard controls the buzzer to sound, the alarm light to flash, and sends a distress signal to the terminal device.

3. The leakage current detection device according to claim 1, characterized in that, The top of the rear cover has a positioning module mounting plate for installing the positioning module; the positioning module is electrically connected to the motherboard to obtain position information. The motherboard controls the display screen to show position information.

4. The leakage current detection device according to claim 1, characterized in that, The front cover also has a power button and a backlight button. The SOS button is located above the display screen, while the power button and backlight button are located below the display screen. There is a backlight window between the power button and the backlight button, and a backlight is installed on the motherboard at the position corresponding to the backlight window.

5. The leakage current detection device according to claim 4, characterized in that, In the middle of the front cover, below the power button and the light button, there is a sound hole. In the horizontal direction, the sound holes are arranged in order of size from smallest to largest to smallest. The buzzer is installed in the middle of the motherboard, corresponding to the position of the sound outlet. The buzzer is closest to the largest sound outlet.

6. The leakage current detection device according to claim 5, characterized in that, The detection chip is installed below the honey maker, located below the motherboard. Depending on the leakage distance and voltage intensity, the brightness of the alarm light and the volume of the buzzer will gradually increase or decrease. The warning lights are installed at the four corners of the motherboard, and the front cover has warning light windows at the corresponding positions of the warning lights.

7. The leakage current detection device according to claim 6, characterized in that, The communication chip is installed below the motherboard, near the rear cover, and is located on a different side of the motherboard from the detection chip; the communication antenna is located between the communication chip and the rear cover, and is electrically connected to the motherboard.

8. The leakage current detection device according to claim 1, characterized in that, The communication chip receives the power-on screen and user information sent by the terminal device, and the motherboard controls the display screen to show the power-on screen and user information; and / or, The communication chip receives the modification signal sent by the terminal device, the motherboard modifies the detection mode or lighting mode, and the display shows the modified detection mode or lighting mode.

9. The leakage current detection device according to claim 1, characterized in that, After the front and rear shells are fastened together, the four corners are fixed with pins. The two pins at the top are located in the grooves at the top corners of the front and rear shells. After the front and rear shells are fixed, the middle part of the pins in the grooves is exposed. A shoulder strap or hanging rope is installed in the middle of the pins.

10. A leakage current detection system, comprising at least one leakage current detection device as described in claims 1-9 and a terminal device, characterized in that, When at least one leakage current detection device detects an environmental leakage current, it will trigger an audible and visual alarm, display leakage current information, and send the leakage current information to the terminal device; and / or, at least one leakage current detection device will send a distress signal to the terminal device, which will receive the distress signal and generate location information. And / or, The terminal device sends a warning signal to at least one leakage current detection device. When at least one leakage current detection device receives the warning signal, it will activate an audible and visual alarm and display a warning message.

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