A system and method for reducing power consumption of an external interrupter

Abstract

The application provides a system and method for reducing power consumption of an external inspection interrupter, and relates to the technical field of interrupters.The system comprises a control module and a relay module integrated in the external inspection interrupter, and the control module is connected to the relay module; the external inspection interrupter is connected to a negative protection system; the relay module comprises a solid-state relay and a magnetic latching relay; the solid-state relay and the magnetic latching relay are respectively connected to the negative protection system; and the control module is configured to: when being located in a first time period, connect the solid-state relay to the negative protection system and disconnect the magnetic latching relay from the negative protection system; and when being located in a second time period, disconnect the solid-state relay from the negative protection system and connect the magnetic latching relay to the negative protection system; the second time period and the first time period are two different time periods in a day, so as to solve the problems that the power consumption of the interrupter is high in a non-working time period and a single relay cannot simultaneously consider long service life and power-off keeping function.

Description

Technical Field

[0001] This application relates to the field of interrupt technology, and in particular to a system and method for reducing the power consumption of an external interrupt. Background Technology

[0002] In cathodic protection systems, the interruptor is the core device controlling the on / off state of the protective current, and it is widely used in corrosion protection projects for metal structures such as oil and gas pipelines and storage tanks. Its core function is to eliminate polarization effects by periodically switching the protective current on and off, thereby accurately monitoring the cathodic protection potential and ensuring the effectiveness of corrosion protection. Since external inspections are usually conducted during the day, the interruptor, although ceasing switching operations at night, still needs to be connected to the cathodic protection station. At this time, the system requires the interruptor output to remain in a "normally on" state to ensure a continuous supply of cathodic protection current.

[0003] Currently, interruptors mainly use solid-state relays and magnetic latching relays. Solid-state relays achieve contactless switching based on semiconductor devices, offering advantages such as long lifespan (millions of cycles), low heat dissipation, and vibration resistance. Their "normally open" characteristic requires a continuous power supply to maintain the control terminal's conduction state; that is, the output terminal only closes when a control signal is present and automatically opens after power failure. Magnetic latching relays utilize a permanent magnet and an electromagnetic coil to achieve power-off self-locking, exhibiting a "normally on / normally off" bistable characteristic, maintaining its state without continuous power supply. Their mechanical contact structure consumes no power in a static state, but the contact life is relatively short (approximately 10,000 cycles), and high-frequency switching is prone to contact failure due to arc erosion and mechanical wear.

[0004] However, to maintain a "constantly on" state at night, solid-state relays need to continuously supply power to the control terminal, resulting in long-term static power consumption (usually several watts), causing energy waste and increasing the load on the cathodic protection system; the mechanical contacts of magnetic latching relays cannot withstand the thousands of switching demands of the interrupter per day (millions of switching times per year), and frequent operation will accelerate the wear of contact materials, causing increased contact resistance, abnormal temperature rise, or even equipment failure; in summary, the current interrupters have high power consumption during non-working periods, and a single relay cannot simultaneously achieve long lifespan and power-off retention function. Summary of the Invention

[0005] This application provides a system and method for reducing the power consumption of an external interrupt device, in order to solve the technical problems of high power consumption of interrupt devices during non-operating periods and the inability of a single relay to simultaneously achieve long lifespan and power-off retention function.

[0006] The first aspect of this application provides a system for reducing the power consumption of an external interrupt detector, comprising: A control module and a relay module are integrated within an external interrupt detector; the control module is connected to the relay module; the external interrupt detector is connected to a cathode protection system. The relay module includes: a solid-state relay and a magnetic latching relay; the solid-state relay and the magnetic latching relay are respectively connected to the cathode protection system; The control module is configured as follows: During the first time period, the solid-state relay is connected to the cathode protection system, and the magnetic latching relay is disconnected from the cathode protection system. During the second time period, the solid-state relay is disconnected from the cathode protection system, and the magnetic latching relay is connected to the cathode protection system; the second time period and the first time period are two different time periods within a day.

[0007] In some embodiments, the solid-state relay is connected to the cathode protection system via a first pin; a first switch is provided on the pin located within the solid-state relay; The control module is further configured as follows: Output a high-level signal to the solid-state relay; When the solid-state relay receives the high-level signal, the first switch closes, connecting the solid-state relay to the cathode protection system.

[0008] In some embodiments, the control module is further configured to: Output a low-level signal to the solid-state relay; When the solid-state relay receives the low-level signal, the first switch is turned off, disconnecting the solid-state relay from the cathodic protection system.

[0009] In some embodiments, the magnetic latching relay is connected to the cathode protection system via a second pin; a second switch is provided on the pin located within the magnetic latching relay; The control module is further configured as follows: Output pulse signal to the magnetic latching relay; When the magnetic latching relay receives the pulse signal, if the second switch is in the closed state, the second switch is opened, disconnecting the magnetic latching relay from the cathode protection system; if the second switch is in the open state, the second switch is closed, connecting the magnetic latching relay to the cathode protection system.

[0010] In some embodiments, the control module is further configured to: During the first time period, a high-level signal is output to the solid-state relay to connect the solid-state relay to the cathode protection system, and a pulse signal is output to the magnetic latching relay to disconnect the magnetic latching relay from the cathode protection system. During the second time period, a low-level signal is output to the solid-state relay to disconnect the solid-state relay from the cathodic protection system, and a pulse signal is output to the magnetic latching relay to connect the magnetic latching relay to the cathodic protection system.

[0011] In some embodiments, during the second time period, the control module enters a sleep mode; in the sleep mode, the internal power supply of the control module is disconnected.

[0012] In some embodiments, the system includes: A detection module is connected to the solid-state relay and the magnetic latching relay; the detection module is configured to: Obtain the switch states of the first switch and the second switch; the switch states include: closed state and open state; If the first switch and the second switch are in the same state, a warning message is sent to the designated device; the designated device is an electronic device capable of receiving electronic information.

[0013] The second aspect of this application provides a method for reducing the power consumption of an external interrupt detector, applied to a system for reducing the power consumption of an external interrupt detector as described in any one of the first aspects above, comprising: During the first time period, the solid-state relay is connected to the cathode protection system, and the magnetic latching relay is disconnected from the cathode protection system. During the second time period, the solid-state relay is disconnected from the cathode protection system, and the magnetic latching relay is connected to the cathode protection system; the second time period and the first time period are two different time periods within a day.

[0014] In some embodiments, the method further includes: During the first time period, a high-level signal is output to the solid-state relay to connect the solid-state relay to the cathode protection system, and a pulse signal is output to the magnetic latching relay to disconnect the magnetic latching relay from the cathode protection system. During the second time period, a low-level signal is output to the solid-state relay to disconnect the solid-state relay from the cathodic protection system, and a pulse signal is output to the magnetic latching relay to connect the magnetic latching relay to the cathodic protection system.

[0015] This application provides a system and method for reducing the power consumption of an external interrupt device. The system includes: a control module and a relay module integrated within the external interrupt device; the control module is connected to the relay module; the external interrupt device is connected to a cathode protection system (CPS); the relay module includes: a solid-state relay and a magnetic latching relay; the solid-state relay and the magnetic latching relay are respectively connected to the CPS; the control module is configured to: during a first time period, connect the solid-state relay to the CPS and disconnect the magnetic latching relay from the CPS; during a second time period, disconnect the solid-state relay from the CPS and connect the magnetic latching relay to the CPS; the second time period and the first time period are two different time periods within a day, to reduce the power consumption of the interrupt device during non-operating periods and to ensure that the relays have both long lifespan and power-off retention function. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, 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 system for reducing the power consumption of the external interrupt controller in this application.

[0018] Explanation of reference numerals in the attached figures: 100 - External interrupt device; 110 - Control module; 120 - Relay module; 121 - Solid-state relay; 1211 - First switch; 122 - Magnetic latching relay; 1221 - Second switch; 200 - Cathodic protection system; 300 - Detection module. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0020] For example, buried steel pipelines operate for extended periods in electrolyte environments such as soil and water, where electrochemical corrosion is a major cause of pipe wall thinning, perforation, and leakage. To inhibit corrosion, cathodic protection is commonly applied to pipeline systems, primarily through two methods: sacrificial anode method and forced current method. The forced current method uses a potentiostat to continuously output direct current to the pipeline, shifting the pipe-to-ground potential negatively to the protection range (typically ≤-850mV), thereby polarizing the entire pipeline surface to a thermodynamically stable region and fundamentally inhibiting corrosion. However, the effectiveness of cathodic protection systems is not permanent. Factors such as changes in soil moisture, stray current interference, insulation joint failure, and aging of the anode bed can all cause shifts in the protection potential. Therefore, regular external pipeline inspection is essential to ensure the long-term reliable operation of the cathodic protection system. External pipeline inspection refers to the technical activity of personnel carrying portable equipment to conduct on-site measurements and evaluations of the pipeline's cathodic protection status at pre-set test piles along the pipeline route. Core test items include: Current-carrying potential: The pipe-to-ground potential measured when the cathodic protection system is working normally, including the IR drop component caused by the current flowing through the soil medium.

[0021] Disconnection potential: The tube-to-ground potential measured immediately after the cathodic protection current is instantaneously cut off. The IR drop has been eliminated, and it is an internationally recognized benchmark value for evaluating the true level of cathodic protection.

[0022] The key to power-off potential measurement lies in the synchronous, rapid, and repeatable interruption of current between the pipe section under test and the potentiostat, with an extremely short interruption time (milliseconds) to avoid potential distortion caused by pipe depolarization. This function is accomplished by an interruptor. The interruptor is connected in series in the cathodic protection circuit and switches on and off frequently according to a preset sequence, working in conjunction with a data logger at the test pile to achieve synchronous potential acquisition.

[0023] To address the technical problems of high power consumption of interrupts during non-operating periods and the inability of a single relay to simultaneously achieve long lifespan and power-off retention, this application provides a system and method for reducing the power consumption of external interrupt detectors. The system and method for reducing the power consumption of external interrupt detectors are described below: like Figure 1 The figure shown is a schematic diagram of the system for reducing the power consumption of the external interrupt controller in this application.

[0024] The first aspect of this application provides a system for reducing the power consumption of an external interrupt detector, comprising: The control module 110 and the relay module 120 are integrated in the external interrupt device 100. The control module 110 is connected to the relay module 120. The external interrupt device 100 is connected to the cathodic protection system 200.

[0025] For example, the external detection interruptor 100 (also called a current interruptor / synchronous interruptor in cathodic protection) is an automatic switching device connected in series in the output circuit of the cathodic protection system 200 (such as a potentiostat). It cyclically cuts off and connects the protection current according to the set on / off cycle. In conjunction with CIPS close-interval potential measurement, it synchronously measures the "on-state potential (ON)" and "off-state potential (OFF)" to eliminate IR drop and accurately evaluate the effect of pipeline cathodic protection.

[0026] For example, the cathodic protection system 200 protects the pipeline from electrochemical corrosion. The external detection interruptor 100 is generally connected in series in the circuit of the cathodic protection system 200. The anode of the external detection interruptor 100 is connected to the positive terminal of the potentiostat, and the cathode of the external detection interruptor 100 is connected to the anode ground bed corresponding to the cathodic protection system 200, which is used to control the on / off state of the cathodic protection system 200.

[0027] The relay module 120 includes a solid-state relay 121 and a magnetic latching relay 122; the solid-state relay 121 and the magnetic latching relay 122 are respectively connected to the cathode protection system 200.

[0028] For example, the solid-state relay 121 is a fully electronic switching device without mechanical contacts, employing optocouplers or transformer isolation to trigger large-current switching by controlling a small current signal. In the external interrupt controller 100, the solid-state relay 121 is widely used in daytime high-frequency switching tests due to its advantages such as fast switching speed, no contact wear, extremely long lifespan (theoretically over one million cycles), small size, and no spark interference. However, the solid-state relay 121 has an inherent drawback: its output characteristic is "normally open," meaning the main circuit immediately disconnects when the control terminal loses power. The magnetic latching relay 122 is a bistable relay. Its core feature is that it relies on a permanent magnet to maintain the contact state, requiring only a pulse voltage during switching. After the state reversal, even if the control terminal is completely de-energized, the contacts remain stably engaged or disengaged, resulting in zero standby power consumption. Compared to ordinary electromagnetic relays that require continuous power to maintain engagement, the magnetic latching relay 122 has a natural advantage in energy saving. However, its limitation lies in the lifespan of the mechanical contacts: limited by factors such as physical bounce and arc erosion, the typical lifespan is about 10,000 cycles, which cannot withstand the tens of thousands of high-frequency switching tests that interrupt devices undergo daily.

[0029] For example, the core component of the external interrupter 100 is a power switching device, whose performance directly determines the test accuracy, equipment lifespan, and field applicability. Currently, the mainstream interrupter uses a solid-state relay 121 as its switching solution. The technical solution for an interrupter based on the solid-state relay 121 is described as follows: The solid-state relay 121 is a fully electronic switching device without mechanical contacts. It uses power electronic devices (such as thyristors, MOSFETs, and IGBTs) as the output stage, achieving input-output isolation through optocouplers or transformers. When a small current signal (typically DC: 3~32V) is applied to the control terminal, the output terminal conducts; when the control terminal loses power, the output terminal immediately turns off. Its advantages include no mechanical contacts, no bounce, and no arcing wear; extremely fast switching speed (microsecond level), suitable for high-precision timing tests; extremely long theoretical lifespan, exceeding one million cycles, virtually maintenance-free; small size, shock-resistant, and suitable for portable devices. However, in the actual use of the external test interrupter 100, since the control terminal disconnects when power is lost, if the circuit needs to be kept on during non-test periods at night, the control terminal of the solid-state relay 121 must be continuously powered. The typical control current of the solid-state relay 121 is 5~20mA, which generates unnecessary power consumption during non-test periods.

[0030] For example, the magnetic latching relay 122 is a bistable electromagnetic relay, whose core structure includes a permanent magnet, an electromagnetic coil, and a group of mechanical contacts. State retention relies on the permanent magnet force: when a positive pulse is applied to the coil, the armature is attracted, the contacts close, and the permanent magnet remains attracted after power is cut off; when a reverse pulse is applied, the armature is released, the contacts open, and the permanent magnet remains released after power is cut off. Electrical energy is consumed only during state switching; in steady-state standby, the control terminal can be completely de-energized, and the contact state remains unchanged. Compared to the solid-state relay 121, the magnetic latching relay 122 has the advantage of maintaining a normally on state without power supply. However, it also has disadvantages such as limited mechanical contact life (around 10,000 cycles), poor resistance to high-frequency operation, and slow switching speed, making it unsuitable for the operating environment of the external interrupt controller 100.

[0031] For example, the control module 110 is a micro control unit that can precisely control the coordinated operation of the solid-state relay 121 and the magnetic latching relay 122, output high and low levels, pulse signals, etc. to control the operation of the two relays, and also participate in the related control of other peripherals of the external interrupt device 100. Its own power consumption is very low, ensuring the device's battery life.

[0032] The control module 110 is configured to: During the first time period, the solid-state relay 121 is connected to the cathode protection system 200, and the magnetic latching relay 122 is disconnected from the cathode protection system 200.

[0033] During the second time period, the solid-state relay 121 is disconnected from the cathode protection system 200, while the magnetic latching relay 122 is connected to the cathode protection system 200. The second time period and the first time period are two different time periods within a day. The first time period corresponds to daytime, such as 8:00 to 17:00; the second time period corresponds to nighttime, such as 17:00 to 8:00.

[0034] In this embodiment, the solid-state relay 121 is connected to the cathode protection system 200 via a first pin; a first switch 1211 is provided on the pin inside the solid-state relay 121; the solid-state relay 121 has four pins, two for input and two for output. When the input is high, the first switch 1211 inside the solid-state relay 121 is closed, and the output is in a short-circuit state; when the input is low or there is no input voltage, the first switch 1211 inside the solid-state relay 121 is open, and the output is in an open-circuit state.

[0035] Specifically, the control module 110 is further configured as follows: A high-level signal is output to the solid-state relay 121.

[0036] When the solid-state relay 121 receives the high-level signal, the first switch 1211 closes, connecting the solid-state relay 121 to the cathodic protection system 200.

[0037] A low-level signal is output to the solid-state relay 121.

[0038] When the solid-state relay 121 receives the low-level signal, the first switch 1211 is turned off, thereby disconnecting the solid-state relay 121 from the cathodic protection system 200.

[0039] In this embodiment, the magnetic latching relay 122 is connected to the cathode protection system 200 via a second pin; a second switch 1221 is provided on the pin inside the magnetic latching relay 122; the magnetic latching relay 122 has four pins, two for input and two for output. When a pulse signal is input to the input, the second switch 1221 inside the magnetic latching relay 122 switches its state; after power is off, the output state of the magnetic latching relay 122 remains unchanged.

[0040] Specifically, the control module 110 is further configured as follows: A pulse signal is output to the magnetic latching relay 122.

[0041] When the magnetic latching relay 122 receives the pulse signal, if the second switch 1221 is in the closed state, the second switch 1221 is opened, so that the magnetic latching relay 122 is disconnected from the cathode protection system 200; if the second switch 1221 is in the open state, the second switch 1221 is closed, so that the magnetic latching relay 122 is connected to the cathode protection system 200.

[0042] This application provides a system for reducing the power consumption of an external detection interrupter. By connecting a solid-state relay 121 and a magnetic latching relay 122 in parallel and using them in a time-division multiplexing manner, the solid-state relay 121 is used to undertake high-frequency testing tasks during the day, and the magnetic latching relay 122 is used to achieve continuous operation during power outages at night. This solves the contradiction between long lifespan and low power consumption that cannot be achieved by a single relay in the prior art, while significantly reducing the standby power consumption of the equipment and meeting the battery life requirements of the equipment for long-term operation and standby at the cathodic protection station.

[0043] For example, the control module 110 is further configured to: During the first time period, a high-level signal is output to the solid-state relay 121 to connect the solid-state relay 121 to the cathode protection system 200, and a pulse signal is output to the magnetic latching relay 122 to disconnect the magnetic latching relay 122 from the cathode protection system 200.

[0044] During the second time period, a low-level signal is output to the solid-state relay 121 to disconnect the solid-state relay 121 from the cathode protection system 200, and a pulse signal is output to the magnetic latching relay 122 to connect the magnetic latching relay 122 to the cathode protection system 200.

[0045] The system for reducing the power consumption of the external detection interrupter provided in this application has a daytime operating mode, i.e., during the first time period; and a nighttime operating mode, i.e., during the second time period. In the daytime operating mode, the control module 110 activates the solid-state relay 121, utilizing its long lifespan and fast response to perform high-frequency switching operations according to a preset cycle, executing a potential test task; at this time, the magnetic latching relay 122 is in a normally-on state and does not participate in switching operations. In the nighttime sleep mode, when the test stops, the control module 110 cuts off the power supply to the control terminal of the solid-state relay 121 and sends a pulse signal to the magnetic latching relay 122, causing it to switch to the "normally-on" state. At this time, the circuit containing the cathodic protection system 200 remains conductive through the magnetic latching relay 122, and the internal power supply of the control module 110 inside the external detection interrupter 100 can be completely disconnected, maintaining the circuit solely through the mechanical self-locking characteristic of the magnetic latching relay 122.

[0046] This application provides a system for reducing the power consumption of an external detection interruptor. During normal external detection operation in the daytime, the control module 110 periodically outputs high and low levels to control the solid-state relay 121 to switch on and off. Simultaneously, a pulse signal is sent to ensure that the magnetic latching relay 122 operates in open-circuit mode. At this time, the current flow direction is... Figure 1 In the thin-wire circuit section, the power consumption of the relay circuit is mainly generated by the operation of the solid-state relay 121. When no external detection operations are performed at night, it is necessary to ensure the normal operation of the circuit containing the cathode protection system 200, i.e., the output of the external detection interruptor 100 should be in a normally on state. At this time, a pulse signal needs to be sent through the control module 110 to place the magnetic latching relay 122 in the switch-on state, and simultaneously send a low-level signal to place the solid-state relay 121 in the switch-off state. The current flow direction at this time is... Figure 1 The thick-wire loop section in the diagram. This method utilizes the power-off retention characteristic of the magnetic latching relay 122 to achieve zero-power standby during non-working periods at night, solving the problem that the solid-state relay 121 needs continuous power to maintain conduction.

[0047] For example, during the second time period, the control module 110 enters a sleep mode; in the sleep mode, the internal power supply of the control module 110 is disconnected.

[0048] In this embodiment, the magnetic latching relay is a bistable relay, meaning it has two stable states: an engaged state and a released state. This allows the relay to maintain its current state even after the control module 110 is powered off, even after a state switch. The core structure of the magnetic latching relay includes a permanent magnet, which is crucial for its ability to maintain its state after power failure. When a positive pulse is applied to the coil, the armature engages, and the contacts close. At this time, the permanent magnet generates sufficient magnetic force to maintain the engaged state, which will not change even after power failure. Similarly, when a reverse pulse is applied to the coil, the armature releases, the contacts open, and the permanent magnet maintains this released state. Since the magnetic latching relay 122 only requires a pulse voltage to overcome the magnetic force of the permanent magnet at the moment of state switching, once the state stabilizes, even if the control module 110 is completely powered off, the contacts can stably maintain the engaged or released state, thus making the power consumption of the magnetic latching relay 122 zero in standby mode.

[0049] For example, the system includes: Detection module 300, connected to the solid-state relay 121 and the magnetic latching relay 122; the detection module 300 is configured to: Obtain the switching states of the first switch 1211 and the second switch 1221; the switching states include: closed state and open state.

[0050] If the first switch 1211 and the second switch 1221 are in the same state, a warning message is sent to a designated device; the designated device is an electronic device capable of receiving electronic information. The warning message includes information such as the system's location and model.

[0051] It is understood that during the operation of the system provided in this application, the switching states of the first switch 1211 and the second switch 1221 may be inconsistent. That is, when the first switch 1211 is on, the second switch 1221 is off; when the first switch 1211 is off, the second switch 1221 is on. Therefore, when the switching states of the first switch 1211 and the second switch 1221 are consistent, the system provided in this application may be damaged (such as the control module 110 failing to output a high level, low level, or pulse signal) or may reach the end of the service life of the magnetic latching relay 122, requiring replacement. Therefore, by determining the switching states of the first switch 1211 and the second switch 1221, it is possible to determine whether the system provided in this application is operating normally, and thus, in the event of abnormal operation, it can be repaired immediately through early warning information.

[0052] This application provides a system for reducing the power consumption of an external interrupt detector, which has the following advantages: 1. Enhanced scenario specificity: This system is designed for energy saving with general-purpose relays. This application is specifically for the pipeline cathodic protection external detection interruptor 100, which is customized for long-term unattended operation in the field.

[0053] 2. Superior relay selection: This application uses solid-state relay 121 for daytime high-frequency testing, with a lifespan of over one million cycles, truly meeting the requirements for tens of thousands of switching cycles.

[0054] 3. Simpler switching logic: The previous application relied on current detection and delay control, which made the logic complex; this application adopts a dual-mode switching based on time reference (daytime testing and nighttime standby), which is perfectly matched with the operating rhythm of the cathodic protection system 200.

[0055] 4. Lower magnetic latching operation frequency: This application does not limit the number of magnetic latching operations, which may be frequently switched; this application enables the magnetic latching relay 122 to operate only twice a day, less than a thousand times a year, completely avoiding the mechanical lifespan shortcoming and achieving more than 10 years of service life for the whole machine.

[0056] 5. Zero standby power consumption is more thorough: This application still requires a small maintenance current, and adopts magnetic holding self-holding and control module 110 sleep mode at night, so the standby power consumption of the whole machine is truly close to zero.

[0057] A second aspect of this application provides a method for reducing the power consumption of an external interrupt detector, applied to a system for reducing the power consumption of an external interrupt detector as described in any of the above embodiments, comprising: During the first time period, the solid-state relay is connected to the cathode protection system, and the magnetic latching relay is disconnected from the cathode protection system. During the second time period, the solid-state relay is disconnected from the cathode protection system, and the magnetic latching relay is connected to the cathode protection system; the second time period and the first time period are two different time periods within a day.

[0058] In this embodiment, the method further includes: During the first time period, a high-level signal is output to the solid-state relay to connect the solid-state relay to the cathode protection system, and a pulse signal is output to the magnetic latching relay to disconnect the magnetic latching relay from the cathode protection system. During the second time period, a low-level signal is output to the solid-state relay to disconnect the solid-state relay from the cathodic protection system, and a pulse signal is output to the magnetic latching relay to connect the magnetic latching relay to the cathodic protection system.

[0059] It is worth noting that the effects of the above method embodiments can be found in the effects of the above system embodiments, and will not be repeated here.

[0060] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A system for reducing the power consumption of an external interrupt detector, characterized in that, include: A control module (110) and a relay module (120) are integrated within an external interrupt device (100), wherein the control module (110) is connected to the relay module (120); and the external interrupt device (100) is connected to a cathode protection system (200). The relay module (120) includes: a solid-state relay (121) and a magnetic latching relay (122); the solid-state relay (121) and the magnetic latching relay (122) are respectively connected to the cathode protection system (200); The control module (110) is configured to: During the first time period, the solid-state relay (121) is connected to the cathode protection system (200), and the magnetic latching relay (122) is disconnected from the cathode protection system (200). During the second time period, the solid-state relay (121) is disconnected from the cathode protection system (200), and the magnetic latching relay (122) is connected to the cathode protection system (200); the second time period and the first time period are two different time periods within a day.

2. The system for reducing the power consumption of an external interrupt controller according to claim 1, characterized in that, The solid-state relay (121) is connected to the cathode protection system (200) through a first pin; a first switch (1211) is provided on the pin located inside the solid-state relay (121). The control module (110) is configured to: Output a high-level signal to the solid-state relay (121); When the solid-state relay (121) receives the high-level signal, the first switch (1211) closes, connecting the solid-state relay (121) to the cathodic protection system (200).

3. The system for reducing the power consumption of an external interrupt controller according to claim 2, characterized in that, The control module (110) is configured to: Output a low-level signal to the solid-state relay (121); When the solid-state relay (121) receives the low-level signal, the first switch (1211) is turned off, thereby disconnecting the solid-state relay (121) from the cathodic protection system (200).

4. The system for reducing the power consumption of an external interrupt detector according to claim 3, characterized in that, The magnetic latching relay (122) is connected to the cathode protection system (200) via a second pin; a second switch (1221) is provided on the pin located inside the magnetic latching relay (122). The control module (110) is configured to: Output a pulse signal to the magnetic latching relay (122); When the magnetic latching relay (122) receives the pulse signal, if the second switch (1221) is in the closed state, the second switch (1221) is opened, so that the magnetic latching relay (122) is disconnected from the cathode protection system (200); if the second switch (1221) is in the open state, the second switch (1221) is closed, so that the magnetic latching relay (122) is connected to the cathode protection system (200).

5. A system for reducing the power consumption of an external interrupt detector according to claim 4, characterized in that, The control module (110) is configured to: During the first time period, a high-level signal is output to the solid-state relay (121) to connect the solid-state relay (121) to the cathode protection system (200), and a pulse signal is output to the magnetic latching relay (122) to disconnect the magnetic latching relay (122) from the cathode protection system (200). During the second time period, a low-level signal is output to the solid-state relay (121) to disconnect the solid-state relay (121) from the cathode protection system (200), and a pulse signal is output to the magnetic latching relay (122) to connect the magnetic latching relay (122) to the cathode protection system (200).

6. The system for reducing the power consumption of an external interrupt detector according to claim 1, characterized in that, During the second time period, the control module (110) enters a sleep mode; in the sleep mode, the internal power supply of the control module (110) is disconnected.

7. A system for reducing the power consumption of an external interrupt controller according to claim 4, characterized in that, The system includes: A detection module (300) is connected to the solid-state relay (121) and the magnetic latching relay (122); the detection module (300) is configured to: Obtain the switch states of the first switch (1211) and the second switch (1221); the switch states include: closed state and open state; If the switching states of the first switch (1211) and the second switch (1221) are consistent, an early warning message is sent to the designated device; the designated device is an electronic device capable of receiving electronic information.

8. A method for reducing the power consumption of an external interrupt detector, applied to a system for reducing the power consumption of an external interrupt detector as described in any one of claims 1 to 7, characterized in that, include: During the first time period, the solid-state relay is connected to the cathode protection system, and the magnetic latching relay is disconnected from the cathode protection system. During the second time period, the solid-state relay is disconnected from the cathode protection system, and the magnetic latching relay is connected to the cathode protection system; the second time period and the first time period are two different time periods within a day.

9. A method for reducing the power consumption of an external interrupt controller according to claim 8, characterized in that, The method further includes: During the first time period, a high-level signal is output to the solid-state relay to connect the solid-state relay to the cathode protection system, and a pulse signal is output to the magnetic latching relay to disconnect the magnetic latching relay from the cathode protection system. During the second time period, a low-level signal is output to the solid-state relay to disconnect the solid-state relay from the cathodic protection system, and a pulse signal is output to the magnetic latching relay to connect the magnetic latching relay to the cathodic protection system.

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