Cable power-off and circuit-break integrated monitoring intelligent device and monitoring method thereof

Abstract

The invention discloses an integrated monitoring intelligent device for power-off and circuit-break of a cable. The integrated monitoring intelligent device comprises a control unit, a power supply unit, an alarm unit and at least one monitoring unit which are connected in parallel, the control unit is connected with the alarm unit and is used for receiving and uploading a starting signal of the alarm unit; the power supply unit is used for supplying power to other units; the alarm unit is connected with the at least one monitoring unit and is used for starting when monitoring that the cable is powered off or disconnected and sending an alarm signal to the control unit; the monitoring unit is used for monitoring the state of a cable and comprises a test terminal, a first coil, a second coil, a first switch, a second switch, a third switch and a fourth switch. Through the power supply unit, the alarm unit and the plurality of monitoring units which are connected in parallel, integrated monitoring of power-off and circuit-break of the cable is realized, the state of the cable is effectively monitored, problems are found in time, and the reliability and safety of a power system are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power monitoring, and in particular relates to an intelligent device for integrated monitoring of cable power failure and circuit breaking and a monitoring method thereof. Background Art

[0002] In the power system, cables are important carriers of electric energy transmission, and their status monitoring is crucial to ensure the safe and stable operation of the power system. Traditional cable monitoring methods often rely on manual inspections or the use of a single monitoring device. These methods have problems such as low monitoring efficiency, poor real-time performance, and insufficient accuracy. Especially when the cable is powered off or circuit-breaking, traditional monitoring methods often have difficulty in timely detection and location of the fault point, resulting in delays in fault handling and posing potential risks to the safe and stable operation of the power system.

[0003] Especially when the cable is out of power or circuit-breaking, due to the limitations of existing monitoring methods, it is often difficult to detect and locate the fault point in time, resulting in delays in fault handling, which poses a serious threat to the safe and stable operation of the power system. For example, unexpected power outages of some key equipment may lead to serious consequences such as production interruption, equipment damage, and even casualties. In addition, cable circuit-breaking failures may also cause safety hazards such as fire and short circuit, posing a potential threat to the stable operation of the power system.

[0004] In recent years, with the development of intelligent technology, some devices have been able to realize the monitoring function of power outages or circuit breaks, but these devices still have some shortcomings in design and application. For example, most of these devices can only realize a single power outage or circuit break monitoring function, and some devices also have limitations in the processing and transmission of monitoring information, lack the ability to interact with mobile terminals, and often can only display monitoring information on the local display screen, but cannot be sent to the mobile terminal in real time, making it impossible for users to understand the cable status anytime and anywhere. Summary of the invention

[0005] The purpose of the present invention is to address the problems existing in the prior art and provide an intelligent device and a monitoring method for integrated cable power outage and circuit break monitoring to meet the needs of comprehensive, real-time and efficient monitoring of cable status, while having the ability to interact with mobile terminals.

[0006] To achieve the above-mentioned object, on the one hand, the present invention proposes an intelligent device for integrated monitoring of cable power failure and circuit breakage, comprising a control unit, a power supply unit, an alarm unit and at least one monitoring unit connected in parallel; The control unit is connected to the alarm unit and is used to receive and upload the signal activated by the alarm unit; The power supply unit is used to supply power to other units; The alarm unit is connected to at least one monitoring unit and is used to start when a power failure or circuit breakage of the cable is detected, and send an alarm signal to the control unit; At least one of the monitoring units is used to monitor the status of the cable, including a test terminal, a first coil, a second coil, a first switch, a second switch, a third switch and a fourth switch, one end of the test terminal is respectively connected to the power supply unit and one end of the first switch, the other end of the first switch is respectively connected to the second switch and the third switch, the other end of the second switch is connected to one end of the first coil, the other end of the first coil is respectively connected to the other end of the test terminal and one end of the second coil, the other end of the second coil is respectively connected to the third switch and the fourth switch, and the other end of the fourth switch is connected to the power supply unit.

[0007] The above scheme realizes the integrated monitoring of cable power failure and circuit break, improves the monitoring efficiency and accuracy. The parallel connection mode is adopted between the units to ensure that each unit works independently without interfering with each other, thereby improving the stability and reliability of the system. Through the combination of test terminals, coils and switches, real-time monitoring of cable status is realized, and power failure or circuit break of the cable can be detected in time.

[0008] Furthermore, a resistor is provided between the test terminal and the first switch. Providing a resistor between the test terminal and the first switch can limit the current, protect circuit components, and prevent damage to the device due to excessive current. In addition, the addition of the resistor improves the safety of the device, enabling it to monitor the cable status in a safer environment.

[0009] Furthermore, the control unit is also connected to a display screen and a wireless communication module.

[0010] The control unit is combined with the display screen to display cable status information in real time, allowing users to intuitively understand the operation of the cable; the addition of the wireless communication module enables the device to remotely transmit monitoring data to the monitoring center, realizing remote monitoring and management, and improving the convenience and flexibility of monitoring.

[0011] Furthermore, the alarm unit includes an audible and visual alarm, which is connected to multiple alarm branches, each alarm branch corresponds to a monitoring unit, and each alarm branch is configured with a first relay and a second relay connected in series, the first relay is synchronized with the state of the third and fourth switches, and the second relay is synchronized with the state of the first and second switches.

[0012] The alarm unit includes an audible and visual alarm and is connected to branch circuits of the same number as the monitoring units, enabling simultaneous monitoring and alarming of multiple cables; the power-off test switch and circuit-breaking test switch provided on the branch circuits can be used to test the power-off and circuit-breaking conditions of the cables, respectively, thereby improving the pertinence and accuracy of the test.

[0013] Furthermore, it also includes a shell, and the control unit, alarm unit, power supply unit and monitoring unit are all arranged in the shell, and the surface of the shell is provided with a status indicator light and an audible and visual alarm.

[0014] The outer shell protects each unit inside and prevents interference and damage from the external environment; the status indicator light and sound and light alarm set on the surface of the outer shell can intuitively display the working status and alarm information of the device, making it convenient for users to perform maintenance and operation.

[0015] On the one hand, the present invention provides a power outage monitoring method of an intelligent device for integrated cable power outage and circuit break monitoring, comprising connecting the power supply end of the cable to a test terminal in a monitoring unit so that the power supply cable, resistor, first switch, second switch and first coil form a loop. If an alarm signal is received, the cable is powered off.

[0016] The power failure monitoring method can monitor the power failure of the cable in real time and send out an alarm signal in time, thereby improving the safety and reliability of the system. In addition, the method is simple and easy to operate, and has high test accuracy.

[0017] Furthermore, when multiple cables are tested for power failure at the same time, each cable is connected to a test terminal of a detection unit. The monitoring method can connect multiple cables for testing according to actual needs, meet the testing requirements in different scenarios, and improve the testing efficiency.

[0018] On the one hand, the present invention provides a circuit break monitoring method of an intelligent device for integrated monitoring of cable power failure and circuit break, comprising short-circuiting any two phase lines at one end of the cable, and connecting the other end of the cable to a test terminal in a monitoring unit, so that the de-energized cable, the second coil, the fourth switch and the power supply unit form a loop, and if a signal alarm signal is received, the cable is broken.

[0019] Furthermore, multiple cables are tested for circuit breaker status at the same time, and each cable is connected to a test terminal of a monitoring unit, thereby improving the test efficiency and saving test cost and time by testing multiple cables at the same time, thereby improving the economic benefits of the test.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: by designing an intelligent device for integrated monitoring of cable power failure and circuit break, comprehensive, real-time and efficient monitoring of the cable status is achieved, wherein the power failure test in the device can effectively monitor the power failure of important equipment that cannot be powered off, and even if there is an accidental power failure, it can respond quickly to minimize the loss after the accidental power failure; secondly, the circuit break test in the device is mainly used for circuit break detection of unpowered cables, which can effectively prevent the cable from being stolen; the device adopts a parallel power supply unit, an alarm unit and multiple monitoring units, combined with a controller, a display screen and a wireless communication module, which not only improves the accuracy and reliability of monitoring, but also enables users to intuitively understand the cable status, and sends the monitoring information to the mobile terminal in real time through a variety of communication protocols, which greatly improves the convenience and real-time nature of monitoring; at the same time, the device allows multiple cables to be connected for testing at the same time, further improving the monitoring efficiency, and providing a strong guarantee for the safe and stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a circuit secondary diagram of the intelligent device for integrated monitoring of cable power failure and circuit breakage of the present invention; Figure 2 This is a circuit diagram of the integrated intelligent device for monitoring power failure and circuit breaker of the cable according to the present invention; Figure 3 This is a schematic diagram of the structure of the intelligent device for integrated monitoring of cable power failure and circuit breakage of the present invention.

[0022] In the figure: 1. casing; 2. power supply unit; 3. monitoring unit; 4. alarm unit; 5. controller; 6. signal light. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Glossary: Figure 1 In the figure, 1KA1 200V coil resistance 200Ω: it is the first coil; 2KA1 24V coil resistance 20Ω: it is the second coil; DC24V: it is the DC power supply.

[0025] The specific scheme of the embodiment is as follows: On the one hand, the present invention proposes an intelligent device for integrated monitoring of cable power failure and circuit breakage, including a control unit, a power supply unit, an alarm unit and at least one monitoring unit connected in parallel; A control unit, connected to the alarm unit, for receiving and uploading a signal activated by the alarm unit; A power supply unit, used to supply power to other units; An alarm unit, connected to at least one monitoring unit, is used to start when a power failure or circuit breakage of the cable is detected, and send an alarm signal to the control unit; At least one monitoring unit is used to monitor the status of the cable, including a test terminal, a first coil, a second coil, a first switch, a second switch, a third switch and a fourth switch, one end of the test terminal is respectively connected to the power supply unit and one end of the first switch, the other end of the first switch is respectively connected to the second switch and the third switch, the other end of the second switch is connected to the first coil, the other end of the first coil is respectively connected to the other end of the test terminal and one end of the second coil, the other end of the second coil is respectively connected to the third switch and the fourth switch, and the other end of the fourth switch is connected to the power supply unit.

[0026] In this embodiment, the standard voltage of the first coil and the second coil is 220V, and the coil resistance is 200Ω. This solution realizes the integrated monitoring of cable power failure and circuit break, improves the monitoring efficiency and accuracy, and adopts parallel connection between the units to ensure that each unit works independently without interfering with each other, thereby improving the stability and reliability of the system. Through the combination of test terminals, coils and switches, real-time monitoring of the cable status is realized, and power failure or circuit break of the cable can be detected in time.

[0027] like Figure 2 As shown, in the present device, a reserved circuit connected to the power supply unit is additionally provided. When other electricity is needed during on-site testing, electricity can be directly connected through this reserved circuit.

[0028] In this embodiment, a 20Ω resistor is provided between the test terminal and the first switch. Providing a resistor between the test terminal and the first switch can limit the current, protect circuit components, and prevent damage to the device due to excessive current. In addition, the addition of the resistor improves the safety of the device, enabling it to monitor the cable status in a safer environment.

[0029] The control unit is also connected to a display screen and a wireless communication module. The controller is connected and exchanges data with each circuit through a specific communication protocol standard (such as Modbus, CAN bus, etc.). The control unit is combined with the display screen to display cable status information in real time, allowing users to intuitively understand the operation of the cable; the addition of the wireless communication module enables the device to remotely transmit monitoring data to the monitoring center, realizing remote monitoring and management, and improving the convenience and flexibility of monitoring.

[0030] The communication interface unit of the wireless communication module supports multiple communication protocols, including but not limited to Ethernet, Wi-Fi, Bluetooth or mobile communication network. It is thus clarified that the communication interface unit of the wireless communication module supports multiple communication protocols, which improves the compatibility and flexibility of the device and enables the device to adapt to different communication environments.

[0031] In addition, the wireless communication module fully considers the security and stability requirements during design, and adopts measures such as encrypted communication protocol and error retransmission mechanism to ensure the reliability and security of data transmission.

[0032] The alarm unit includes an audible and visual alarm, which is connected to multiple alarm branches. Each alarm branch corresponds to a monitoring unit. Each alarm branch is configured with a first relay and a second relay connected in series. The first relay is synchronized with the status of the third and fourth switches, and the second relay is synchronized with the status of the first and second switches.

[0033] In the design of the alarm unit, specific coding or identification and logical judgment circuits are used to ensure that the correspondence between the branch circuit and the monitoring unit will not be wrong. At the same time, redundant detection and error alarm functions are set up. Once a correspondence error or abnormality is found, an alarm is triggered immediately and an error message is displayed.

[0034] The alarm unit can monitor and alarm multiple cables simultaneously through multiple alarm branches; the power failure test switch and circuit break test switch set on the branch circuit can be used to test the power failure and circuit break of the cable respectively, which improves the pertinence and accuracy of the test. In addition, each branch circuit corresponds to each monitoring unit one by one, ensuring that each monitoring unit has a corresponding sound and light alarm branch circuit, which improves the accuracy and reliability of monitoring.

[0035] The power supply unit mainly consists of a DC power supply and a transformer. The DC power supply uses a high-performance lithium battery or supercapacitor. The specific type and capacity are selected according to the actual power consumption and working time requirements of the device. The relay is selected according to the load characteristics and control requirements of the circuit to ensure stable operation in harsh environments.

[0036] like Figure 3 As shown, the device also includes a shell, and the control unit, alarm unit, power supply unit and monitoring unit are all arranged in the shell, and a status indicator light and an audible and visual alarm are arranged on the surface of the shell.

[0037] The outer shell protects each unit inside and prevents interference and damage from the external environment; the status indicator light and sound and light alarm set on the surface of the outer shell can intuitively display the working status and alarm information of the device, making it convenient for users to perform maintenance and operation.

[0038] It should be noted that the casing is made of high-strength, corrosion-resistant and waterproof material, with a protection level of IP65 or above; at the same time, a heat dissipation device and a temperature sensor are installed inside the casing to monitor and adjust the internal temperature in real time to ensure that the device can still work normally in a high temperature environment.

[0039] like Figure 1 As shown, this device is mainly used in the following two scenarios: 1. After the cable is laid and powered on, check whether the cable is powered off: At the power supply end of the cable, it is connected to the terminal of the device, then the live line, 1KA1 coil (coil voltage 220V, coil wire resistance 200Ω) and resistor R1 (20Ω) form a loop to be energized, 1KA1 is energized, the normally closed point in series with the sound and light alarm is disconnected, the sound and light alarm does not work, and it is a normal state. At the same time, the normally closed terminal of 1KA1 is disconnected, isolating the 24V relay and 24V power supply from the system; if the cable loses power, the 1KA1 coil point loses power, the 1KA1 in series with the sound and light alarm resumes to normally closed, the sound and light alarm works, the corresponding signal is transmitted to the PLC, and sent to the mobile phone through the wireless communication module, prompting relevant personnel that the cable has lost power.

[0040] 2. The cable has been laid but no power has been supplied. Check whether the cable is broken: Short-circuit any two phase lines of the cable at one end and connect them in series to the terminal block of the device at the other end. Then, the unpowered series cable, 1KA2, and 24V power supply form a loop, the 1KA2 coil is energized, the normally closed point in series with the sound and light alarm is disconnected, the sound and light alarm does not work, and it is a normal state. At the same time, the normally closed point of 1KA2 is disconnected, isolating 1KA1 and resistor R1 from the system; if the cable is cut off (open circuit), the 1KA2 coil loses power, the normally closed point resumes closing, the sound and light alarm works, and the corresponding signal is transmitted to the PLC and sent to the mobile phone through the wireless communication module, prompting relevant personnel that the cable is cut off (open circuit).

[0041] On the one hand, the present invention provides a power outage monitoring method of an intelligent device for integrated monitoring of cable power outages and circuit breaks, comprising connecting the power supply end of the cable to a test terminal in a monitoring unit so that the power supply cable, resistor, first switch, second switch and first coil form a loop. If an alarm signal is received, the cable is powered off.

[0042] Specifically: the first coil is energized, the power-off test switch connected in series with the sound and light alarm is disconnected, the sound and light alarm does not work, and it is a normal state. At the same time, the third switch and the fourth switch are both disconnected to isolate the power supply unit; if the cable is powered off, the first coil loses power, the power-off test switch connected in series with the sound and light alarm returns to normal closure, the sound and light alarm works, the power-off signal is transmitted to the controller, and sent to the mobile terminal through the wireless communication module, so that the staff can get the news in the first time, shorten the maintenance time, and reduce the losses caused by power outages.

[0043] The power failure monitoring method can monitor the power failure of the cable in real time and send out an alarm signal in time, thereby improving the safety and reliability of the system. In addition, the method is simple and easy to operate, and has high test accuracy.

[0044] The power-off test is performed on multiple cables at the same time, and each cable is connected to the test terminal of a monitoring unit. The monitoring method can connect multiple cables for testing according to actual needs, meet the testing requirements in different scenarios, and improve the testing efficiency.

[0045] To ensure accuracy and reliability when testing multiple cables simultaneously, a time-sharing test or parallel test strategy is adopted, and priority and error handling mechanisms are set to ensure that the test data of each cable can be accurately recorded and analyzed.

[0046] On the one hand, the present invention provides a circuit break monitoring method of an intelligent device for integrated monitoring of cable power failure and circuit break, comprising short-circuiting any two phase lines at one end of the cable, and connecting the other end of the cable to a test terminal in a monitoring unit, so that the de-energized cable, the second coil, the fourth switch and the power supply unit form a loop. If an alarm signal is received, the cable is broken.

[0047] Specifically: the second coil is energized, the circuit breaker test switch connected in series with the sound and light alarm is disconnected, the sound and light alarm does not work, which is a normal state. At the same time, the first normal switch and the second normal switch are disconnected, isolating the first coil and the resistor from the system; if the cable is broken, the second coil loses power, the circuit breaker test switch connected in series with the sound and light alarm is restored to closure, the sound and light alarm works, and the circuit breaker signal is transmitted to the control end and sent to the mobile end through the wireless communication module.

[0048] Conduct circuit breakage tests on multiple cables at the same time, and each cable is connected to a test terminal of a monitoring unit. This improves test efficiency, and by testing multiple cables at the same time, it can save test costs and time, and improve the economic benefits of the test.

[0049] In addition, during the test process, fault handling methods and safety measures are set up, such as setting circuit protection measures such as short circuit protection, overcurrent protection, overvoltage protection, and insulation resistance testing of the cable before testing, to ensure safety and reliability during the test.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent device for monitoring cable power failure and circuit breakage, characterized in that: It includes a control unit, a power supply unit, an alarm unit and at least one monitoring unit connected in parallel; The control unit is connected to the alarm unit and is used to receive and upload the signal activated by the alarm unit; The power supply unit is used to supply power to other units; The alarm unit is connected to at least one monitoring unit and is used to start when a power failure or a circuit breakage of the cable is detected, and send an alarm signal to the control unit; At least one of the monitoring units includes a test terminal, a first coil, a second coil, a first switch, a second switch, a third switch and a fourth switch, one end of the test terminal is respectively connected to a power supply unit and one end of the first switch, the other end of the first switch is respectively connected to the second switch and the third switch, the other end of the second switch is connected to the first coil, the other end of the first coil is respectively connected to the other end of the test terminal and one end of the second coil, the other end of the second coil is respectively connected to the third switch and the fourth switch, and the other end of the fourth switch is connected to the power supply unit.

2. According to claim 1, the intelligent device for integrated monitoring of cable power failure and circuit breakage is characterized in that: A resistor is provided between the test terminal and the first switch.

3. The intelligent device for integrated monitoring of cable power failure and circuit breakage according to claim 1 is characterized in that: The control unit is also connected to a display screen and a wireless communication module.

4. The intelligent device for integrated monitoring of cable power failure and circuit breakage according to claim 1 is characterized in that: The alarm unit includes an audible and visual alarm, which is connected to multiple alarm branches, each alarm branch corresponds to a monitoring unit, and each alarm branch is configured with a first relay and a second relay connected in series, the first relay is synchronized with the status of the third and fourth switches, and the second relay is synchronized with the status of the first and second switches.

5. The intelligent device for integrated monitoring of cable power failure and circuit breakage according to claim 1 is characterized in that: It also includes a shell, in which the control unit, the alarm unit, the power supply unit and the monitoring unit are all arranged, and a status indicator light and an audible and visual alarm are arranged on the surface of the shell.

6. A power failure monitoring method for an integrated cable power failure and circuit breaker monitoring intelligent device, characterized in that: include: The power transmission end of the cable is connected to a test terminal in a monitoring unit so that the power transmission cable, the first switch, the second switch and the first coil form a loop. If an alarm signal is received, the cable is powered off.

7. The power failure monitoring method of the integrated cable power failure and circuit breaker monitoring intelligent device according to claim 6 is characterized by: Perform power-off tests on multiple cables simultaneously, with each cable connected to a test terminal of a monitoring unit.

8. A method for monitoring the disconnection of a cable power failure and disconnection integrated monitoring intelligent device, characterized in that: include: Short-circuit any two phase lines at one end of the cable, and connect the other end of the cable to a test terminal in a monitoring unit, so that the de-energized cable, the second coil, the fourth switch and the power supply unit form a loop. If an alarm signal is received, the cable is disconnected.

9. The circuit breaking monitoring method of the integrated cable power failure and circuit breaking monitoring intelligent device according to claim 8 is characterized by: Conduct circuit breakage tests on multiple cables simultaneously, with each cable connected to a test terminal of a monitoring unit.

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