A detachable near electric cable monitoring alarm device and method

Abstract

The application discloses a detachable near-electric cable monitoring and alarming device and method, a transmitting module comprising a signal generating unit and a signal coupling unit; the signal generating unit is used for generating a monitoring signal; the signal coupling unit is electrically connected with the signal generating unit and clamps a monitored cable, and is used for coupling the monitoring signal to the monitored cable, so that the monitored cable forms an electric field signal along a line for monitoring. A receiving module is installed on a working arm of a construction machine, is used for monitoring an electric field intensity of the electric field signal, and determines whether to send an alarm signal according to the electric field intensity of the electric field signal. An alarming module is installed in a working room of the construction machine, is wirelessly connected with the receiving module, and is used for receiving the alarm signal sent by the receiving module and sending alarm information. Real-time dynamic monitoring of an underground cable in a construction process is realized, safety accidents are significantly reduced, and construction safety and power supply reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of cable monitoring technology, and in particular to a detachable near-electric cable monitoring alarm device and method. Background Technology

[0002] In the fields of power system operation and maintenance and municipal construction, preventing damage to underground cables has always been a key and challenging issue. During the operation of construction machinery (such as excavators and drilling rigs), accidents caused by accidentally digging up underground cables are frequent, resulting not only in cable damage and power outages, but also potentially secondary disasters such as electric shock, fire, and explosion.

[0003] To prevent construction machinery from accidentally colliding with underground cables, the common practice is for power company maintenance personnel to point out the cable routes to the construction team and set up warning posts, warning tapes, or painted markings on the ground. The route is also checked using a cable path detector before construction. However, in scenarios with large construction areas and frequent subcontractor movement, it is easy for handover to be missed or for ground markings to be damaged or covered. This can lead to excavator operators being unable to accurately determine the cable location due to obstructed vision, resulting in accidents. Cable path detectors are also bulky and heavy, making it impossible to monitor the distance between construction machinery and underground cables in real time and continuously during operation, and thus failing to provide real-time dynamic monitoring and early warning during construction. Summary of the Invention

[0004] This invention provides a detachable near-electric cable monitoring and alarm device and method, which enables construction machinery to monitor underground cables in real time during construction, thereby reducing the occurrence of accidents.

[0005] According to one aspect of the present invention, a detachable proximity cable monitoring and alarm device is provided, comprising a transmitting module, a receiving module, and an alarm module; The transmitting module includes a signal generation unit and a signal coupling unit; the signal generation unit is used to generate a monitoring signal; the signal coupling unit is electrically connected to the signal generation unit and clamps the monitored cable, used to couple the monitoring signal to the monitored cable, so that an electric field signal that can be monitored is formed along the monitored cable; The receiving module is installed on the working arm of the construction machinery to monitor the electric field strength of the electric field signal and determine whether to issue an alarm signal based on the electric field strength of the electric field signal. The alarm module is installed in the working chamber of the construction machinery and is wirelessly connected to the receiving module. It is used to receive the alarm signal sent by the receiving module and send alarm information.

[0006] Optionally, the receiving module includes an electric field sensing unit, a signal processing unit, a judgment unit, and a wireless transmission unit; The electric field sensing unit is used to sense the electric field signal of the monitored cable and output an analog signal according to the electric field strength of the electric field signal; The signal processing unit is electrically connected to the electric field sensing unit and is used to process the analog signal and generate a digital signal; The judgment unit is electrically connected to the signal processing unit and is used to determine the distance between the working arm of the construction machinery and the monitored cable based on the digital signal, and to determine whether to issue an alarm signal. The wireless transmitting unit is electrically connected to the judgment unit and is used to receive the alarm signal and transmit the alarm signal to the alarm module.

[0007] Optionally, the signal processing unit includes an amplification subunit, a filtering subunit, and an analog-to-digital conversion subunit; The amplification subunit is electrically connected to the electric field sensing unit and is used to amplify the analog signal. The filtering subunit is electrically connected to the amplification subunit and is used to filter the amplified analog signal. The analog-to-digital conversion subunit is electrically connected to the filtering subunit and is used to convert the filtered analog signal into the digital signal.

[0008] Optionally, the alarm module includes a wireless receiving unit, an alarm unit, a display unit, and a power management unit; The wireless receiving unit is wirelessly connected to the wireless transmitting unit and is used to receive the alarm signal; The alarm unit is electrically connected to the wireless receiving unit and is used to send alarm information according to the alarm signal. The display unit is electrically connected to the wireless receiving unit and is used to display the alarm information and the distance between the working arm of the construction machinery and the monitored cable; The power management unit is electrically connected to the power output interface of the wireless receiving unit, the alarm unit, the display unit, and the construction machinery, respectively, and is used to supply power to the wireless receiving unit, the alarm unit, and the display unit.

[0009] Optionally, the alarm unit includes a light alarm subunit and a voice alarm subunit; The light alarm subunit is electrically connected to the wireless receiving unit and is used to send light alarm information according to the alarm signal. The voice alarm subunit is electrically connected to the wireless receiving unit and is used to issue voice alarm information according to the alarm signal.

[0010] Optionally, the transmitting module further includes a first power supply unit; The first power supply unit is electrically connected to the signal generation unit and the signal coupling unit respectively, and is used to supply power to the signal generation unit and the signal coupling unit.

[0011] Optionally, the receiving module further includes a second power supply unit; The second power supply unit is electrically connected to the electric field sensing unit, the signal processing unit, the judgment unit and the wireless transmission unit respectively, and is used to supply power to the electric field sensing unit, the signal processing unit, the judgment unit and the wireless transmission unit.

[0012] Optionally, the receiving module further includes a fixing unit; The fixing unit is located at the bottom of the receiving module and is used to detachably fix the receiving module to the working arm of the construction machinery. The fixing unit includes a strong magnetic chuck or an adjustable clamp.

[0013] Optionally, the signal coupling unit includes a transmitting current clamp that clamps the outside of the monitored cable.

[0014] According to another aspect of the present invention, a detachable proximity cable monitoring and alarm method is provided, characterized in that it is applied to the detachable proximity cable monitoring and alarm device described in any of the above embodiments, the detachable proximity cable monitoring and alarm method comprising: The transmitting module is installed on the monitored cable, the receiving module is installed on the working arm of the construction machinery, and the alarm module is installed in the working chamber of the construction machinery, and the receiving module and the alarm module establish wireless communication. The receiving module monitors the electric field strength of the electric field signal around the monitored cable, and issues the alarm signal when the electric field strength is greater than or equal to the preset electric field threshold, and does not issue the alarm signal when the electric field strength is less than the preset electric field threshold. The alarm module issues the alarm information based on the alarm signal.

[0015] The technical solution of this invention generates a monitoring signal through a signal generation unit, and a signal coupling unit couples the monitoring signal to the monitored cable, so that a monitorable electric field signal is formed along the monitored cable. The receiving module can monitor the strength of the electric field signal and determine whether to send an alarm signal to the alarm module. When the alarm module receives the alarm signal, it can issue an alarm message to remind the driver. This enables real-time dynamic monitoring of underground cables during construction, which can significantly reduce the occurrence of safety accidents, improve construction safety and power supply reliability, and avoid disasters such as electric shock, fire, and explosion caused by underground cable damage. At the same time, it reduces economic losses such as cable repair and power outage compensation. Furthermore, the device has a detachable design, is easy to operate, and highly efficient, making it suitable for repeated use on multiple construction sites and with multiple machines, thus reducing costs. It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a detachable proximity cable monitoring and alarm device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of another detachable proximity cable monitoring and alarm device provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of another detachable proximity cable monitoring and alarm device provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of another detachable proximity cable monitoring and alarm device provided in an embodiment of the present invention; Figure 5 A schematic diagram of the structure of another detachable proximity cable monitoring and alarm device provided in an embodiment of the present invention; Figure 6 A flowchart of a detachable proximity cable monitoring and alarm method provided in an embodiment of the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] Figure 1 This is a schematic diagram of a detachable proximity cable monitoring and alarm device provided in an embodiment of the present invention. See also... Figure 1 The detachable proximity cable monitoring and alarm device 100 includes a transmitting module 10, a receiving module 20, and an alarm module 30. The transmitting module 10 includes a signal generation unit 11 and a signal coupling unit 12. The signal generation unit 11 generates a monitoring signal. The signal coupling unit 12 is electrically connected to the signal generation unit 11 and clamps the monitored cable, coupling the monitoring signal onto the monitored cable to form a monitorable electric field signal along the cable. The receiving module 20 is mounted on the working arm of the construction machinery to monitor the electric field strength of the electric field signal and determine whether to issue an alarm signal based on the electric field strength. The alarm module 30 is installed in the working chamber of the construction machinery and wirelessly connected to the receiving module 20, issuing alarm information based on the alarm signal emitted by the receiving module 20.

[0021] Specifically, during construction in areas with underground cables, the inability to determine the exact location of these cables often leads to construction machinery accidentally contacting them, causing cable damage, power outages, and potentially secondary disasters such as electric shock, fire, and explosion. The detachable proximity cable monitoring and alarm device 100 provided by this invention can be installed on construction machinery to monitor the distance between the underground cable and the machinery in real time during construction, ensuring that the underground cable is not touched and property damage is avoided. This detachable proximity cable monitoring and alarm device 100 includes a transmitting module 10, a receiving module 20, and an alarm module 30. The transmitting module 10 can be installed underground, in contact with the monitored cable. The transmitting module 10 is mainly used to transmit monitoring signals to the monitored cable so that the receiving module 20 can monitor the location of the monitored cable based on the monitoring signals. The transmitting module 10 may include a signal generation unit 11 and a signal coupling unit 12. The signal generation unit 11 can generate a monitoring signal. The monitoring signal can be a sinusoidal AC signal of 50Hz-200kHz. For example, to improve the monitoring range and accuracy, the signal generation unit 11 can generate a 100kHz sinusoidal AC signal. The signal generation unit 11 can be a signal generator capable of directly generating the corresponding signal. The signal coupling unit 12 is electrically connected to the signal generation unit 11 and clamps the monitored cable, used to couple the monitoring signal generated by the signal generation unit 11 to the monitored cable. The monitoring signal can be transmitted in the form of AC voltage through the metal shielding layer of the monitored cable, forming an electric field signal around the monitored cable. The signal coupling unit 12 can include a transmitting current clamp, which clamps the outer side of the monitored cable and couples the monitoring signal to the metal shielding layer of the monitored cable. For example, the transmitting module 10 can be placed in the cable well of the monitored cable, and the monitoring signal can be coupled to the monitored cable by clamping the monitored cable with the transmitting current clamp.

[0022] Specifically, the receiving module 20 can monitor the electric field signal formed around the monitored cable under the influence of the monitoring signal. Sensing the electric field strength of this signal, it can determine whether the current construction machinery's operation is within a dangerous range and send an alarm message to the alarm module 30. The receiving module 20 can be installed on the working arm of the construction machinery. During construction, it can monitor the electric field strength and determine whether to issue an alarm signal based on the strength of the electric field signal. The alarm module 30 is wirelessly connected to the receiving module 20. When the construction machinery is within a dangerous range, it can receive the alarm signal from the receiving module 20 and issue an alarm message to alert the operator. The alarm module 30 can be installed in the working chamber of the construction machinery for the operator to receive the alarm message immediately.

[0023] The detachable proximity cable monitoring and alarm device provided in this invention generates a monitoring signal through a signal generation unit, and a signal coupling unit couples the monitoring signal to the monitored cable to create a monitorable electric field signal along the cable. A receiving module monitors the strength of the electric field signal and determines whether to send an alarm signal to the alarm module. Upon receiving the alarm signal, the alarm module issues an alarm message to alert the driver. This enables real-time dynamic monitoring of underground cables during construction, significantly reducing the occurrence of safety accidents, improving construction safety and power supply reliability, and preventing disasters such as electric shock, fire, and explosion caused by damaged underground cables. It also reduces economic losses from cable repairs and power outage compensation. Furthermore, the device's detachable design makes it easy to operate and highly efficient, suitable for repeated use across multiple construction sites and with multiple machines, thus reducing costs.

[0024] Optional, Figure 2 This is a schematic diagram of another detachable proximity cable monitoring and alarm device provided as an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 2 The receiving module 20 includes an electric field sensing unit 21, a signal processing unit 22, a judgment unit 23, and a wireless transmitting unit 24. The electric field sensing unit 21 senses the electric field signal of the monitored cable and outputs an analog signal based on the electric field strength. The signal processing unit 22 is electrically connected to the electric field sensing unit 21 and processes the analog signal to generate a digital signal. The judgment unit 23 is electrically connected to the signal processing unit 22 and determines the distance between the working arm of the construction machinery and the monitored cable based on the digital signal, and determines whether to issue an alarm signal. The wireless transmitting unit 24 is electrically connected to the judgment unit 23 and receives the alarm signal and transmits it to the alarm module 30.

[0025] Specifically, the receiving module 20 may include an electric field sensing unit 21, a signal processing unit 22, a judgment unit 23, and a wireless transmitting unit 24. The electric field sensing unit 21 can monitor the electric field signal around the monitored cable and output a corresponding analog signal based on the electric field strength of the sensed signal. The electric field sensing unit 21 can be a high-sensitivity power frequency electric field sensor with a frequency range of 50Hz-200kHz, capable of detecting weak power frequency electric field signals attenuated by insulation layers and soil. The electric field sensing unit 21 can output an analog voltage signal proportional to the electric field strength. For example, the electric field sensing unit 21 can be a capacitive electric field sensor of model ECA-100 with a sensitivity of 1V / m. The signal processing unit 22 is electrically connected to the electric field sensing unit 21 and is mainly used to process the analog signal and generate a digital signal. It can amplify, filter, and perform analog-to-digital conversion on the analog signal output by the electric field sensing unit 21 to convert the analog signal into a digital signal that can carry the electric field strength. The judgment unit 23 is electrically connected to the signal processing unit 22. Its main function is to determine whether to issue an alarm signal based on the received digital signal and a preset electric field threshold, and to determine the distance between the working arm of the construction machinery and the monitored cable based on the digital signal. The distance between the working arm of the construction machinery and the monitored cable corresponding to the preset electric field threshold can be determined through a preset correspondence. This preset correspondence can be a relationship between electric field strength and distance; for example, it can be a table of electric field strength and distance or a calibration curve of electric field strength and distance. When the electric field strength is greater than or equal to the preset electric field threshold, an alarm signal can be sent to the wireless transmitting unit 24. The judgment unit 23 can be a microcontroller, MCU, etc. For example, the judgment unit can use a microcontroller of model STM32F030. The preset electric field threshold is not specifically limited in this embodiment of the invention and can be set according to actual needs. For example, the distance corresponding to the preset electric field threshold can be 1.5m, 1.0m, 0.5m, etc. The wireless transmitting unit 24 is electrically connected to the judgment unit 23. When the electric field strength is greater than or equal to the preset electric field threshold, it can receive the alarm signal issued by the judgment unit 23 and transmit the alarm signal to the alarm module 30.

[0026] Optional, Figure 3 This is a schematic diagram of another detachable proximity cable monitoring and alarm device provided as an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 3The signal processing unit 22 includes an amplification subunit 221, a filtering subunit 222, and an analog-to-digital conversion subunit 223. The amplification subunit 221 is electrically connected to the electric field sensing unit 21 and is used to amplify the analog signal. The filtering subunit 222 is electrically connected to the amplification subunit 221 and is used to filter the amplified analog signal. The analog-to-digital conversion subunit 223 is electrically connected to the filtering subunit 222 and is used to convert the filtered analog signal into a digital signal.

[0027] Specifically, the signal processing unit 22 is mainly used to process the analog signal output by the electric field sensing unit 21. The signal processing unit 22 may include an amplification subunit 221, a filtering subunit 222, and an analog-to-digital conversion subunit 223. The amplification subunit 221 is electrically connected to the electric field sensing unit 21. Since the analog signal output by the electric field sensing unit 21 usually has a small amplitude, it can be amplified by the amplification subunit 221. In actual construction environments, various electromagnetic interferences exist, which may superimpose on the useful analog signal. The filtering subunit 222 filters the amplified analog signal, matching its passband frequency to the monitoring signal frequency generated by the transmitting module 10, allowing the useful signal to pass while filtering out noise and other interference signals. The analog-to-digital conversion subunit 223 is electrically connected to the filtering subunit 222 and is mainly used to convert the filtered analog signal into a digital signal. The analog-to-digital conversion subunit 223 converts the continuously changing analog voltage signal into a discrete digital signal, so that the judgment unit 23 can perform numerical comparison and threshold judgment. The amplification subunit 221 may include an operational amplifier, the filtering subunit 222 may include a bandpass filter, and the analog-to-digital conversion subunit 223 may include an analog-to-digital converter.

[0028] Optional, Figure 4 This is a schematic diagram of another detachable proximity cable monitoring and alarm device provided as an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 4 The alarm module 30 includes a wireless receiving unit 31, an alarm unit 32, a display unit 33, and a power management unit 34. The wireless receiving unit 31 is wirelessly connected to the wireless transmitting unit 24 and is used to receive alarm signals. The alarm unit 32 is electrically connected to the wireless receiving unit 31 and is used to issue alarm information based on the alarm signals. The display unit 33 is electrically connected to the wireless receiving unit 31 and is used to display alarm information and the distance between the working arm of the construction machinery and the monitored cable. The power management unit 34 is electrically connected to the power output interfaces of the wireless receiving unit 31, the alarm unit 32, the display unit 33, and the construction machinery, respectively, and is used to supply power to the wireless receiving unit 31, the alarm unit 32, and the display unit 33.

[0029] Specifically, the alarm module 30 is mainly used to issue alarm information based on alarm signals, thereby reminding the driver. The alarm module 30 may include a wireless receiving unit 31, an alarm unit 32, a display unit 33, and a power management unit 34. The wireless receiving unit 31 establishes a wireless connection with the wireless transmitting unit 24 to receive alarm signals emitted by the wireless transmitting unit 24. The wireless receiving unit 31 and the wireless transmitting unit 24 may use an nRF24L01 radio frequency transceiver. The wireless receiving unit 31 is also electrically connected to the alarm unit 32 and the display unit 33, and can transmit the received alarm signals to the alarm unit 32 and the display unit 33. The alarm unit 32 can issue alarm information based on the alarm signal. The display unit 33 can display the alarm information and the distance between the working arm of the construction machinery and the monitored cable, as determined by the judgment unit 23. The driver can view the distance between the monitored cable and the construction machinery arm through the display unit 33, providing convenience for the driver. The power management unit 34 is connected to the wireless receiving unit 31, the alarm unit 32, the display unit 33, and the power output interface of the construction machinery. The power output interface of the construction machinery can be a vehicle-mounted cigarette lighter interface. The power management unit 34 may include a voltage conversion circuit and overvoltage and overcurrent protection circuits, which can convert the power output interface of the construction machinery into the operating voltage required by the vehicle-mounted power supply, namely the wireless receiving unit 31, the alarm unit 32, and the display unit 33. The power management unit 34 may also have a built-in backup battery, which automatically switches over when the main power supply fails, ensuring the normal operation of the alarm module 30.

[0030] Optionally, based on the above embodiments, see also... Figure 4 The alarm unit 32 includes a light alarm subunit 321 and a voice alarm subunit 322. The light alarm subunit 321 is electrically connected to the wireless receiving unit 31 and is used to issue light alarm information based on the alarm signal. The voice alarm subunit 322 is electrically connected to the wireless receiving unit 31 and is used to issue voice alarm information based on the alarm signal.

[0031] Specifically, the alarm unit 32 may include a light alarm subunit 321 and a voice alarm subunit 322. The light alarm subunit 321 may include multiple light-emitting diodes (LEDs), and the voice alarm subunit 322 may include a buzzer or a speaker. When the wireless receiving unit 31 transmits an alarm signal to the light alarm subunit 321 and the voice alarm subunit 322, the light alarm subunit 321 drives the LEDs to flash at a preset frequency, and the buzzer in the voice alarm subunit 322 may sound an alarm or the speaker may emit a voice reminder to attract the driver's attention.

[0032] Optional, Figure 5This is a schematic diagram of another detachable proximity cable monitoring and alarm device provided as an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 5 The transmitting module 10 also includes a first power supply unit 13. The first power supply unit 13 is electrically connected to the signal generation unit 11 and the signal coupling unit 12, respectively, and is used to supply power to the signal generation unit 11 and the signal coupling unit 12.

[0033] Specifically, the transmitting module 10 also includes a first power supply unit 13, which is electrically connected to both the signal generation unit 11 and the signal coupling unit 12, providing power to both units. The first power supply unit 13 incorporates a built-in rechargeable lithium battery, allowing for charging when no work is required. Furthermore, it facilitates battery replacement if the lithium battery is found to be depleted during construction.

[0034] Optionally, based on the above embodiments, see also... Figure 5 The receiving module 20 also includes a second power supply unit 25. The second power supply unit 25 is electrically connected to the electric field sensing unit 21, the signal processing unit 22, the judgment unit 23 and the wireless transmission unit 24 respectively, and is used to supply power to the electric field sensing unit 21, the signal processing unit 22, the judgment unit 23 and the wireless transmission unit 24.

[0035] Specifically, the receiving module 20 can also be equipped with a second power supply unit 25. The second power supply unit 25 can have a built-in rechargeable lithium battery to power the electric field sensing unit 21, signal processing unit 22, judgment unit 23, and wireless transmission unit 24. The second power supply unit 25 can also be connected to the external power interface or power cord of the construction machinery to step down and convert the vehicle power supply to power the electric field sensing unit 21, signal processing unit 22, judgment unit 23, and wireless transmission unit 24. For example, the receiving module 20 can have dimensions of 150mm × 100mm × 50mm and a weight of 1.2kg. It can be attached to the inside of the excavator boom using four N35 neodymium magnets, approximately 0.5m from the bucket.

[0036] Optionally, based on the above embodiments, the receiving module 20 is further provided with a fixing unit. The fixing unit is disposed at the bottom of the receiving module 20 and is used to detachably fix the receiving module 20 to the working arm of the construction machinery. The fixing unit may include a strong magnetic chuck or an adjustable clamp, which facilitates the quick installation and removal of the receiving module 20 on different construction machinery.

[0037] The detachable proximity cable monitoring and alarm device provided in this invention enables real-time dynamic monitoring of underground cables, significantly reducing the rate of cable breakage accidents, improving power supply reliability, enhancing construction safety, and preventing secondary disasters such as electric shock, fire, and explosion caused by underground cable damage, thus protecting the lives of construction workers and surrounding residents. It also reduces losses from cable repairs, power outage compensation, and equipment replacement, thereby lowering economic losses. Furthermore, the device is small in size, lightweight, easy to operate, highly efficient, and rechargeable. It can be centrally managed by the power company and is suitable for cyclical use across multiple construction sites and multiple machines.

[0038] This invention also provides a detachable proximity cable monitoring and alarm method. Figure 6 This is a flowchart illustrating a detachable proximity cable monitoring and alarm method provided in an embodiment of the present invention. This method is applied to a detachable proximity cable monitoring and alarm device provided in any of the above embodiments.

[0039] like Figure 6 As shown, the detachable proximity cable monitoring and alarm method provided in this embodiment of the invention includes: S110. Install the transmitting module on the monitored cable, the receiving module on the working arm of the construction machinery, and the alarm module in the working chamber of the construction machinery, and establish wireless communication between the receiving module and the alarm module.

[0040] Specifically, before construction, power company maintenance personnel can install the transmitting unit on the monitored cable. The transmitting module 10 can be placed in the cable well of the monitored cable, and the signal generation unit 11 generates a monitoring signal. The signal is coupled to the monitored cable via a transmitting current clamp, allowing the monitoring signal to propagate along the monitored cable. The receiving module is installed on the working arm of the construction machinery, detachably using a strong magnetic chuck or adjustable clamp. The alarm module is installed in the working chamber of the construction machinery, and the alarm module and receiving module are wirelessly connected so that the operator can hear the alarm immediately and promptly check the distance between the monitored cable and the construction machinery.

[0041] S120 The receiving module monitors the electric field strength of the electric field signal around the monitored cable, and issues an alarm signal when the electric field strength is greater than or equal to a preset electric field threshold, and does not issue an alarm signal when the electric field strength is less than the preset electric field threshold.

[0042] Specifically, after all modules are installed, the signal generation unit generates a monitoring signal, which is then coupled to the monitored cable via the signal coupling unit. A stable electric field signal is formed along the monitored cable. During construction, the receiving module located on the working arm of the construction machinery can monitor the electric field signal in real time and determine whether an alarm signal needs to be issued based on the electric field strength and the preset electric field threshold.

[0043] For example, when the electric field strength is greater than or equal to a preset electric field threshold, it can be determined that the construction machinery is within a dangerous range from the monitored cable, and the receiving module can send an alarm signal to the alarm module. When the electric field strength is less than the preset electric field threshold, it can be determined that the construction machinery is far enough away from the monitored cable that it will not touch the monitored cable, and the receiving module will not send an alarm signal to the alarm module.

[0044] S130, The alarm module issues alarm information based on the alarm signal.

[0045] Specifically, after receiving an alarm signal from the receiving module, the alarm module will issue an audible and visual alarm and display the distance between the construction machinery's boom and the monitored cable, reminding the operator to immediately stop the boom's movement or shut off the engine. Once the operator takes evasive action, the boom moves away from the monitored cable, the electric field strength drops below the preset electric field threshold, and the alarm automatically deactivates. Furthermore, after construction is completed, power company personnel can disassemble the device, recharge it, and prepare it for future use.

[0046] The detachable proximity cable monitoring and alarm method provided in this invention generates a monitoring signal through a signal generation unit, and a signal coupling unit couples the monitoring signal to the monitored cable to form a monitorable electric field signal along the cable. A receiving module monitors the strength of the electric field signal and determines whether to send an alarm signal to the alarm module. Upon receiving the alarm signal, the alarm module issues an alarm message to alert the driver. This method enables real-time dynamic monitoring of underground cables during construction, significantly reducing the occurrence of safety accidents, improving construction safety and power supply reliability, and preventing disasters such as electric shock, fire, and explosion caused by underground cable damage. It also reduces economic losses related to cable repair and power outage compensation.

[0047] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A detachable proximity cable monitoring and alarm device, characterized in that, Includes a transmitting module, a receiving module, and an alarm module; The transmitting module includes a signal generation unit and a signal coupling unit; the signal generation unit is used to generate a monitoring signal; the signal coupling unit is electrically connected to the signal generation unit and clamps the monitored cable, used to couple the monitoring signal to the monitored cable, so that an electric field signal that can be monitored is formed along the monitored cable; The receiving module is installed on the working arm of the construction machinery to monitor the electric field strength of the electric field signal and determine whether to issue an alarm signal based on the electric field strength of the electric field signal. The alarm module is installed in the working chamber of the construction machinery and is wirelessly connected to the receiving module. It is used to receive the alarm signal sent by the receiving module and send alarm information.

2. The detachable proximity cable monitoring and alarm device according to claim 1, characterized in that, The receiving module includes an electric field sensing unit, a signal processing unit, a judgment unit, and a wireless transmission unit; The electric field sensing unit is used to sense the electric field signal of the monitored cable and output an analog signal according to the electric field strength of the electric field signal; The signal processing unit is electrically connected to the electric field sensing unit and is used to process the analog signal and generate a digital signal; The judgment unit is electrically connected to the signal processing unit and is used to determine the distance between the working arm of the construction machinery and the monitored cable based on the digital signal, and to determine whether to issue an alarm signal. The wireless transmitting unit is electrically connected to the judgment unit and is used to receive the alarm signal and transmit the alarm signal to the alarm module.

3. The detachable proximity cable monitoring and alarm device according to claim 2, characterized in that, The signal processing unit includes an amplification subunit, a filtering subunit, and an analog-to-digital conversion subunit; The amplification subunit is electrically connected to the electric field sensing unit and is used to amplify the analog signal. The filtering subunit is electrically connected to the amplification subunit and is used to filter the amplified analog signal. The analog-to-digital conversion subunit is electrically connected to the filtering subunit and is used to convert the filtered analog signal into the digital signal.

4. The detachable proximity cable monitoring and alarm device according to claim 2, characterized in that, The alarm module includes a wireless receiving unit, an alarm unit, a display unit, and a power management unit; The wireless receiving unit is wirelessly connected to the wireless transmitting unit and is used to receive the alarm signal; The alarm unit is electrically connected to the wireless receiving unit and is used to send alarm information according to the alarm signal. The display unit is electrically connected to the wireless receiving unit and is used to display the alarm information and the distance between the working arm of the construction machinery and the monitored cable; The power management unit is electrically connected to the power output interface of the wireless receiving unit, the alarm unit, the display unit, and the construction machinery, respectively, and is used to supply power to the wireless receiving unit, the alarm unit, and the display unit.

5. The detachable proximity cable monitoring and alarm device according to claim 2, characterized in that, The alarm unit includes a light alarm subunit and a voice alarm subunit; The light alarm subunit is electrically connected to the wireless receiving unit and is used to send light alarm information according to the alarm signal. The voice alarm subunit is electrically connected to the wireless receiving unit and is used to issue voice alarm information according to the alarm signal.

6. The detachable proximity cable monitoring and alarm device according to claim 1, characterized in that, The transmitting module also includes a first power supply unit; The first power supply unit is electrically connected to the signal generation unit and the signal coupling unit respectively, and is used to supply power to the signal generation unit and the signal coupling unit.

7. The detachable proximity cable monitoring and alarm device according to claim 2, characterized in that, The receiving module also includes a second power supply unit; The second power supply unit is electrically connected to the electric field sensing unit, the signal processing unit, the judgment unit and the wireless transmission unit respectively, and is used to supply power to the electric field sensing unit, the signal processing unit, the judgment unit and the wireless transmission unit.

8. The detachable proximity cable monitoring and alarm device according to claim 2, characterized in that, The receiving module also includes a fixing unit; The fixing unit is located at the bottom of the receiving module and is used to detachably fix the receiving module to the working arm of the construction machinery. The fixing unit includes a strong magnetic chuck or an adjustable clamp.

9. The detachable proximity cable monitoring and alarm device according to claim 1, characterized in that, The signal coupling unit includes a transmitting current clamp that clamps the outer side of the monitored cable.

10. A detachable proximity cable monitoring and alarm method, characterized in that, The detachable proximity cable monitoring and alarm device according to any one of claims 1-9, wherein the detachable proximity cable monitoring and alarm method comprises: The transmitting module is installed on the monitored cable, the receiving module is installed on the working arm of the construction machinery, and the alarm module is installed in the working chamber of the construction machinery, and the receiving module and the alarm module establish wireless communication. The receiving module monitors the electric field strength of the electric field signal around the monitored cable, and issues the alarm signal when the electric field strength is greater than or equal to the preset electric field threshold, and does not issue the alarm signal when the electric field strength is less than the preset electric field threshold. The alarm module issues the alarm information based on the alarm signal.

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