Multi-lamp control system and leakage detection method and detection device thereof

Abstract

The embodiment of the present specification provides a multi-lamp control system and a leakage detection method and a detection device thereof, wherein the multi-lamp control system comprises a plurality of lighting devices, wherein the leakage detection method comprises: acquiring position identification information of each lighting device relative to a preset reference position; acquiring a leakage current of a power transmission line segment between the preset reference position and a first lighting device, and a leakage current of a power transmission line segment between each adjacent lighting device; determining a functional relationship between the leakage current and the position identification information according to the position identification information of each lighting device and the leakage current on each power transmission line segment; and determining a leakage state of the multi-lamp control system according to the functional relationship between the leakage current and the position identification information and a set functional relationship. By using the above technical solution, the leakage state of the multi-lamp control system can be detected.

Description

Technical Field

[0001] The embodiments in this specification relate to the field of electronic circuit testing technology, and in particular to a multi-lamp control system and its leakage current detection method and device. Background Technology

[0002] With the rapid development of lighting technology, multi-lamp control systems are widely used in various lighting scenarios. In practical applications, multi-lamp control systems typically include multiple lighting devices connected by power lines. After long-term operation, leakage current may occur, which could cause abnormal operation of the lighting devices or lead to personal safety accidents, reducing the reliability of the multi-lamp control system.

[0003] Against this backdrop, it becomes particularly important to detect the leakage current status of multi-lamp control systems. Summary of the Invention

[0004] In view of this, the embodiments of this specification provide a multi-lamp control system and a leakage current detection method and device thereof, which can detect the leakage current status of the multi-lamp control system.

[0005] This specification provides a leakage current detection method for a multi-lamp control system, wherein the multi-lamp control system includes multiple lighting devices, and the leakage current detection method includes:

[0006] Obtain the position identification information of each lighting device relative to a preset reference position;

[0007] The leakage current of the power transmission line segment between the preset reference position and the first lighting device, and the leakage current of the power transmission line segment between each adjacent lighting device are obtained.

[0008] Based on the location identification information of each lighting device and the leakage current on each power transmission line segment, determine the functional relationship between the leakage current and the location identification information;

[0009] The leakage status of the multi-lamp control system is determined based on the functional relationship between leakage current and location identification information and the set functional relationship.

[0010] Optionally, determining the leakage state of the multi-lamp control system based on the functional relationship between leakage current and location identification information and a set functional relationship includes:

[0011] Based on the functional relationship between leakage current and location identification information, determine the slope value corresponding to each power transmission line segment;

[0012] Based on the set function relationship between leakage current and location identification information, determine the standard slope value corresponding to each power transmission line segment;

[0013] The leakage current status of the multi-lamp control system is determined based on the slope value and the standard slope value.

[0014] Optionally, determining the leakage current state of the multi-lamp control system based on the slope value and the standard slope value includes:

[0015] When the difference between the slope value and the standard slope value is greater than a preset difference, it is determined that the multi-lamp control system has an abnormal leakage phenomenon.

[0016] When the difference between the slope value and the standard slope value is less than the preset difference, it is determined that there is no abnormal leakage current in the multi-lamp control system.

[0017] Optionally, determining the leakage current state of the multi-lamp control system based on the slope value and the standard slope value includes:

[0018] The standard slope value corresponding to each power transmission line segment is compensated to obtain the compensated slope value of each power transmission line segment;

[0019] The leakage current status of the multi-lamp control system is determined based on the slope value and the compensation slope value.

[0020] Optionally, the leakage current detection method further includes: generating a leakage current monitoring report corresponding to the leakage current status of the multi-lamp control system;

[0021] Based on the leakage current monitoring report, locate the power transmission line segment where the abnormal leakage current occurred and disconnect the power supply to the power transmission line segment.

[0022] Optionally, the leakage detection method further includes: obtaining the water immersion status of each lighting device;

[0023] The leakage status of the multi-lamp control system is determined based on the water immersion status of each lighting device, the functional relationship between leakage current and location identification information, and the set functional relationship.

[0024] Accordingly, embodiments of this specification also provide a leakage current detection device for a multi-lamp control system. The multi-lamp control system includes multiple lighting devices, each having position identification information relative to a preset reference position. The leakage current detection device includes:

[0025] Multiple leakage current detection units, wherein at least one leakage current detection unit is coupled to the main control unit and the first lighting device respectively, and the other leakage current detection units are coupled to each adjacent lighting device, which is suitable for obtaining the leakage current of each power transmission line segment;

[0026] Multiple control cabinets are connected one-to-one with leakage current detection units, which are suitable for transmitting the leakage current.

[0027] The main control unit, located at the preset reference position and connected to each control cabinet, is adapted to determine the functional relationship between leakage current and position identification information based on the position identification information of each lighting device and the leakage current on each power transmission line segment; and to determine the leakage state of the multi-lamp control system based on the functional relationship between leakage current and position identification information and the set functional relationship.

[0028] Optionally, the leakage current detection unit includes a residual current transformer, which is installed on the power transmission line of the corresponding lighting device.

[0029] Optionally, the main control unit is adapted to determine the slope value corresponding to each power transmission line segment according to the functional relationship between leakage current and location identification information, and to determine the standard slope value corresponding to each power transmission line segment according to the set functional relationship between leakage current and location identification information, and to determine the leakage state of the multi-lamp control system based on the slope value and the standard slope value.

[0030] Optionally, the leakage current detection device further includes:

[0031] The monitoring report generation unit is located between the main control unit and each control cabinet, and is suitable for generating a leakage monitoring report corresponding to the leakage status of the multi-lamp control system.

[0032] The main control unit is also adapted to locate the power transmission line segment where abnormal leakage occurs based on the leakage monitoring report, and disconnect the power supply to the power transmission line segment.

[0033] Optionally, the leakage current detection device further includes:

[0034] A water immersion sensor is used to acquire the water immersion status of each lighting device and transmit the data to the main control unit.

[0035] The main control unit is also adapted to determine the leakage status of the multi-lamp control system based on the water immersion status of each lighting device, the functional relationship between leakage current and location identification information, and a set functional relationship.

[0036] Optionally, the control cabinet and the main control unit communicate in at least one of the following ways:

[0037] Bluetooth;

[0038] Wifi;

[0039] Zigbee;

[0040] Power line carrier communication;

[0041] RS485 communication.

[0042] This specification also provides a multi-lamp control system, including:

[0043] Multiple lighting devices, each with position marking information relative to a preset reference position, are suitable for providing illumination;

[0044] The leakage current detection device described in any of the foregoing embodiments is suitable for detecting the leakage current of each power transmission line segment, and determining the leakage current status of the multi-lamp control system based on the leakage current of each power transmission line segment and the location identification information of each lighting device.

[0045] The leakage current detection method for the multi-lamp control system provided in this specification can determine the functional relationship between leakage current and position identification information based on the position marking information of each lighting device relative to a preset reference position and the leakage current of each power transmission line segment. Since the functional relationship can characterize the actual leakage state of each power transmission line segment, and the set functional relationship between leakage current and position identification information can characterize the natural leakage state of each power transmission line segment, the leakage state of the multi-lamp control system can be determined based on the functional relationship and the set functional relationship, thereby realizing the detection of the leakage state of the multi-lamp control system.

[0046] Furthermore, based on the functional relationship between leakage current and location identification information, the slope value corresponding to each power transmission line segment can be determined. Based on the set functional relationship between leakage current and location identification information, the standard slope value corresponding to each power transmission line segment can be determined. By comparing the slope value and the standard slope value, the leakage state of each power transmission line segment can be intuitively reflected, thereby determining the leakage state of the multi-lamp control system. The determination method is simple.

[0047] Furthermore, by comparing the difference between the slope value and the standard slope value with a preset difference, it is possible to avoid misjudging the presence of abnormal leakage in the multi-lamp control system due to a single accidental factor, thereby improving the robustness of the leakage detection method.

[0048] Furthermore, by compensating for the standard slope values ​​corresponding to each power transmission line segment, and based on the compensated slope value and the slope value obtained from the compensation, the leakage status of the multi-lamp control system can be determined, which helps to reduce the risk of misjudgment in abnormal leakage detection and improves the reliability of the detection results.

[0049] Furthermore, by generating a leakage monitoring report corresponding to the leakage status of the multi-lamp control system, and disconnecting the power supply to the power transmission line segment where an abnormal leakage phenomenon is located, damage to the multi-lamp control system caused by the leakage power transmission line segment can be effectively avoided, thereby improving the safety of the multi-lamp control system application.

[0050] Furthermore, based on the functional relationship between the water immersion status, leakage current, and location identification information of each lighting device and the set functional relationship, it is possible to more accurately determine whether there is a real abnormal leakage phenomenon in the multi-lamp control system, thereby further improving the reliability of the detection results. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0052] Figure 1 A schematic diagram of a multi-lamp control system according to an embodiment of this specification is shown;

[0053] Figure 2 A flowchart of a leakage current detection method for a multi-lamp control system according to an embodiment of this specification is shown;

[0054] Figure 3 A flowchart illustrating the determination of leakage current status in a multi-lamp control system according to an embodiment of this specification is shown.

[0055] Figure 4 A flowchart illustrating another method for determining the leakage current state of a multi-lamp control system in an embodiment of this specification is shown.

[0056] Figure 5 This diagram illustrates the principle of determining the leakage current state of a multi-lamp control system in a specific application scenario according to an embodiment of this specification.

[0057] Figure 6 This specification shows a schematic diagram of the structure of a leakage current detection device for a multi-lamp control system according to an embodiment of the present specification;

[0058] Figure 7 The diagram illustrates the leakage current detection principle of a leakage current detection device for a multi-lamp control system in a specific application scenario of this specification. Detailed Implementation

[0059] As mentioned in the background technology, when a multi-lamp control system operates for a long time, leakage may occur. The leakage current may cause abnormal operation of the lighting device or cause personal safety accidents, reducing the reliability of the multi-lamp control system.

[0060] To better understand why leakage occurs in multi-lamp control systems, an example will be provided below for detailed explanation.

[0061] like Figure 1As shown, a multi-lamp control system can include three lighting devices (e.g., Figure 1 The lighting devices 10 to 30 are shown in the diagram. Each lighting device is connected to the control box 40 via a power transmission line. The control box 40 provides power to each lighting device via the power transmission line, as shown by the arrow in the diagram.

[0062] Each lighting device has the same structure, and each can include a pole and multiple lighting modules mounted on the pole.

[0063] Specifically, such as Figure 1 As shown, the lighting device 10 may include a pole 11 and lighting units 12, 13, and 14 disposed on the pole 11. An SDL (Soft Defined Lighting) device for controlling the lighting state of each lighting unit is installed inside the pole 11 and connected to the lighting units 12, 13, and 14 via power lines. It is understood that the structures of other lighting devices can be found in the above description and will not be elaborated upon here.

[0064] When the lighting device is in illumination mode, there is a natural leakage current phenomenon in the power transmission line. The magnitude of the leakage current at any point on the power transmission line is related to the distance of that point from a preset reference position (e.g., Figure 1 The distance to the location of the central electrical control box 40 is positively correlated with the current. Therefore, by detecting the leakage current at any location, the leakage status of the multi-lamp control system can be determined.

[0065] Specifically, this specification provides a leakage current detection method for a multi-lamp control system. Based on the position marking information of each lighting device relative to a preset reference position and the leakage current of each power transmission line segment, the functional relationship between the leakage current and the position marking information can be determined. Since the functional relationship can characterize the actual leakage state of each power transmission line segment, and the set functional relationship between the leakage current and the position marking information can characterize the natural leakage state of each power transmission line segment, the leakage state of the multi-lamp control system can be determined based on the functional relationship and the set functional relationship, thereby realizing the detection of the leakage state of the multi-lamp control system.

[0066] To enable those skilled in the art to better understand and implement the embodiments of the present invention, the following describes in detail the concept, scheme, principle, and advantages of the embodiments of this specification in conjunction with the accompanying drawings and specific application examples.

[0067] First, this specification provides a leakage current detection method for a multi-lamp control system, wherein the multi-lamp control system may include multiple lighting devices, such as... Figure 2 As shown, the leakage status of a multi-lamp control system can be detected by following these steps:

[0068] S11, Obtain the position identification information of each lighting device relative to the preset reference position.

[0069] Specifically, a multi-lamp control system includes multiple lighting devices, and the power transmission line segments between any adjacent lighting devices may experience unnatural (or abnormal) leakage current. To facilitate the determination of the leakage current status of the multi-lamp control system, each lighting device can be numbered according to its distance from a preset reference position, and these numbers can be used as location identification information for each lighting device.

[0070] In some other embodiments, the location identification information of each lighting device can also be obtained according to the spatial location of the lighting device or according to a set method. The embodiments of this specification do not impose any restrictions on the method of identifying lighting devices, as long as different lighting devices can be distinguished.

[0071] In specific implementation, any position can be used as the preset reference position in the embodiments of this specification.

[0072] As a specific example, the location of the equipment used to power each lighting device can be used as a preset reference location.

[0073] S12, obtain the leakage current of the power transmission line segment between the preset reference position and the first lighting device.

[0074] S13, obtain the leakage current of the power transmission line segment between each adjacent lighting device.

[0075] Specifically, through steps S12 and S13, the leakage current of each power transmission line segment can be obtained.

[0076] In some embodiments of this specification, the leakage current of the lighting device when it is in the lighting state can be obtained in various ways. For example, the leakage current can be obtained by a residual current transformer; or, for another example, the leakage current of each power transmission line can be indirectly obtained by measuring the voltage value of the resistor connected to each power transmission line segment.

[0077] S14. Based on the location identification information of each lighting device and the leakage current on each power transmission line segment, determine the functional relationship between the leakage current and the location identification information.

[0078] Specifically, the leakage current is related to the location of the power transmission line segment. After steps S12 and S13 are used, a functional relationship between the leakage current and the location identification information can be established. The functional relationship can characterize the actual leakage state of each power transmission line segment (including natural leakage and abnormal leakage).

[0079] S15. Based on the functional relationship between leakage current and location identification information and the set functional relationship, determine the leakage status of the multi-lamp control system.

[0080] Among them, when it is determined that each lighting device is in the lighting state, and when there is natural leakage in the power transmission line, the set function relationship between leakage current and location identification information can be obtained. The set function relationship can characterize the natural leakage (also known as normal leakage) state of each power transmission line segment.

[0081] Specifically, since the functional relationship can characterize the actual leakage state of each power transmission line segment, and the set functional relationship can characterize the natural leakage state of each power transmission line segment, the leakage state of the multi-lamp control system can be determined based on the functional relationship and the set functional relationship, thus realizing the detection of the leakage state of the multi-lamp control system.

[0082] It should be noted that there is no necessary order between some steps in the above embodiments. They can be executed simultaneously or in sequence without causing contradictions, and the order can be changed. For example, when actually executing the steps of the leakage current detection method for the multi-lamp control system provided in this specification, steps S12 and S13 can be executed simultaneously; steps S12 can be executed first, followed by steps S13; or steps S12 and S13 can be executed before steps S14. This specification does not impose specific restrictions on the order of steps, as long as the leakage current state of the multi-lamp control system can be determined.

[0083] To enable those skilled in the art to better understand and implement the embodiments of this specification, the following provides some specific examples of the specific implementation of the leakage current detection method of the multi-lamp control system in the embodiments of this specification.

[0084] In some embodiments of this specification, when the functional relationship between leakage current and location identification information is determined, the leakage status of the multi-lamp control system can be determined based on the slope value of each power transmission line segment.

[0085] For example, such as Figure 3 As shown, the leakage status of a multi-lamp control system can be determined in the following way.

[0086] S21. Determine the slope value corresponding to each power transmission line segment based on the functional relationship between leakage current and location identification information.

[0087] Specifically, by establishing a functional relationship between the leakage current and location identification information of each power transmission line segment, a line graph of the functional relationship between "leakage current and location information" can be drawn. The line graph of the functional relationship is suitable for characterizing the measured leakage current line of each lighting device in the power transmission line. Through the measured leakage current line, the slope value corresponding to each power transmission line segment can be determined.

[0088] S22, Based on the set function relationship between leakage current and location identification information, determine the standard slope value corresponding to each power transmission line segment.

[0089] Specifically, by establishing a set function relationship between each power transmission line segment and location identification information, a line graph of the set function relationship of "leakage current-location information" can be drawn. The set function relationship line graph is suitable for characterizing the standard leakage line corresponding to each lighting device when it naturally leaks current in the power transmission line. Through the standard leakage line, the standard slope value corresponding to each power transmission line segment can be determined.

[0090] It should be noted that if the multi-lamp control system is in a natural leakage state, the leakage current at different locations is positively correlated, so the standard slope value of the standard leakage line obtained is the same.

[0091] S23, determine the leakage status of the multi-lamp control system based on the slope value and the standard slope value.

[0092] Specifically, the slope value of the power transmission line segment between each lighting device can characterize the relative magnitude of the actual leakage current of each power transmission line segment, while the standard slope value of each power transmission line segment can characterize the relative magnitude of the natural leakage current of each power transmission line segment. Therefore, by comparing the slope value and the standard slope value, the leakage state of each power transmission line segment can be intuitively reflected, and the leakage state of the multi-lamp control system can be determined. The determination method is simple.

[0093] As a specific example, such as Figure 4 As shown, the straight line L0 represents the standard leakage line corresponding to multiple lighting devices in a natural leakage state in the power transmission line, and the broken line L1 is the measured leakage broken line of multiple lighting devices in the power transmission line. The standard slope value of the standard leakage line L0 is K. This standard slope value K can be used as a standard to judge whether there is an abnormal leakage phenomenon in the multi-lamp control system. If the slope of any segment in the measured leakage broken line L1 is greater than the standard slope value K, it can be judged that there is an abnormal leakage phenomenon in the power transmission line segment corresponding to that segment.

[0094] Specifically, Figure 4 A multi-lamp control system with five lighting devices is shown. By detecting the leakage currents I1 to I5 of these five lighting devices when they are in illumination, a measured leakage current curve L1 can be obtained. The slope K1 of the power transmission line segment from location marker 0 (the location of the preset reference position) to 1, and the slope K2 of the power transmission line segment from location marker 1 to 2, in the measured leakage current curve L1 are both close to the standard slope value K. This means that there is no abnormal leakage current in the power transmission line segment from the preset reference position (e.g., the location of the control cabinet) to the first lighting device, and in the circuit transmission line segment from the first lighting device to the second lighting device.

[0095] If the slope K3 of the measured leakage line L1 from the preset reference position of position marker information 2 to 3 is greater than K, then there is an abnormal leakage phenomenon in the circuit transmission line segment from the second lighting device to the third lighting device. However, the slope K4 of the measured leakage line L1 from the preset reference position of position marker information 3 to 4, and the slope K5 of the measured leakage line L1 from the preset reference position of position marker information 4 to 5 are both close to the standard slope value K, indicating that there is no abnormal leakage phenomenon in the circuit transmission line segment from the third lighting device to the fourth lighting device, and the circuit transmission line segment from the fourth lighting device to the fifth lighting device. In other words, the abnormal leakage phenomenon returned to the state of natural leakage after the third lighting device.

[0096] Therefore, by comparing the slope of the standard leakage line L0 with the slope of each straight segment in the measured leakage line L1, it is possible to determine whether a multi-lamp control system has actually experienced leakage.

[0097] Understandable, Figure 4 The process described herein, which involves comparing the slope of a standard leakage current line with the slopes of each straight segment in a measured leakage current polygonal line, to determine the leakage current state of a multi-lamp control system, is merely an illustrative example. The slope values ​​described above will vary depending on the type of multi-lamp control system and the specific application scenario, and must be determined experimentally. The embodiments in this specification only provide one approach for reference by those skilled in the art.

[0098] In specific implementation, in addition to Figure 4 In addition to determining the leakage status of the multi-lamp control system, the method can also determine whether there is an abnormal leakage phenomenon in the multi-lamp control system by comparing the difference between the slope value and the standard slope value with the preset difference.

[0099] For example, if the difference between the slope value and the standard slope value is greater than a preset difference, it is determined that there is an abnormal leakage phenomenon in the multi-lamp control system; or, for another example, if the difference between the slope value and the standard slope value is less than a preset difference, it is determined that there is no abnormal leakage phenomenon in the multi-lamp control system.

[0100] It is understandable that the standard slope value of each power transmission line segment is measured under natural leakage conditions, while the slope value of each power transmission line segment is measured under actual leakage conditions. Therefore, the slope value of each power transmission line segment is not less than the standard slope value, so the difference between the two must be greater than zero.

[0101] Therefore, by comparing the difference between the slope value and the standard slope value with a preset difference, the misjudgment of abnormal leakage in a multi-lamp control system due to a single accidental factor can be avoided, thus improving the robustness of the leakage detection method.

[0102] It should be noted that the magnitude of the preset difference can be set according to the actual scenario, and is not limited here. For example, in some scenarios with high leakage current detection accuracy requirements, the preset difference can be set to be smaller; in some scenarios with low leakage current detection accuracy requirements, the preset difference can be set to be larger. Here, "larger" and "smaller" are relative concepts. As long as the preset difference corresponding to the scenario with high leakage current detection accuracy requirements is smaller than the preset difference corresponding to the scenario with low leakage current detection accuracy requirements, it is acceptable.

[0103] In practice, considering the change in the standard slope value caused by the natural leakage of the multi-lamp control system, the standard slope value can be compensated, and then the leakage status of the multi-lamp control system can be determined.

[0104] As a specific example, refer to Figure 5 The flowchart shown in the embodiment of this specification illustrates another method for determining the leakage current state of a multi-lamp control system, as follows: Figure 5 As shown, the leakage status of a multi-lamp control system can be determined by following these steps:

[0105] S31, compensate for the standard slope value corresponding to each power transmission line segment to obtain the compensated slope value of each power transmission line segment.

[0106] Specifically, to improve the accuracy of detection, a slope compensation coefficient K0 can be introduced to compensate for the standard slope value K corresponding to each power transmission line segment, resulting in a compensated slope value K+K0.

[0107] In some embodiments, the slope compensation coefficient K0 can be preset, and the value of the slope compensation coefficient K0 can be an empirical coefficient obtained through a large number of leakage current measurements and experiments in practical applications.

[0108] For example, the slope compensation coefficient K0 can also be determined based on a certain proportion of the standard slope value K. As an optional example, K0 = (5% to 15%) × K.

[0109] S32, based on the slope value and the compensation slope value, determine the leakage current status of the multi-lamp control system.

[0110] For specific details, please refer to Figure 3 and Figure 4 The relevant descriptions in the text will not be repeated here. The difference is that in step S32, the slope value and the compensation slope value are used as reference parameters. For example, the slope values ​​Kx and K+K0 are used as reference parameters, where Kx represents the slope value of any circuit transmission line segment, in order to evaluate the leakage current status of the multi-lamp control system.

[0111] By compensating for the standard slope values ​​corresponding to each adjacent lighting device, and determining the leakage status of the multi-lamp control system based on the compensated slope value and the slope value obtained from the compensation, it is beneficial to reduce the risk of misjudgment in abnormal leakage detection and improve the reliability of the detection results.

[0112] Due to various factors (such as power supply voltage fluctuations, sudden power outages, etc.), the detection results obtained by using standard slope values ​​for abnormal leakage current detection may not accurately reflect the actual leakage current status of the multi-lamp control system. In other words, the detection results may be true or they may be biased.

[0113] In some embodiments of this specification, considering the impact of ground water on the operating status of the multi-lamp control system, in specific implementations, water immersion can also be considered when determining the leakage status of the multi-lamp control system.

[0114] As an optional example, the leakage detection method in the embodiments of this specification may further include: obtaining the water immersion status of each lighting device; and determining the leakage status of the multi-lamp control system based on the water immersion status of each lighting device, the functional relationship between leakage current and location identification information, and a set functional relationship.

[0115] For example, continue to refer to Figure 4 If the slope K3 of the line segment from position marker information 2 to 3 in the measured leakage line L1 is greater than K, and the second lighting device and / or the third lighting device are detected to be submerged in water, that is, the power transmission line segment between the second lighting device and the third lighting device is submerged in water, then it can be determined that there is an abnormal leakage phenomenon in the power transmission line segment between the second lighting device and the third lighting device.

[0116] For example, if the slope K3 of the line segment from position marker information 2 to 3 in the measured leakage line L1 is close to the difference between K and the preset difference, and if the second lighting device is detected to be submerged in water while the third lighting device is not submerged in water, it is impossible to determine whether there is an abnormal leakage phenomenon in the power transmission line segment between the second and third lighting devices.

[0117] By using the above-mentioned leakage detection method, which simultaneously considers the water immersion status of each lighting device, the functional relationship between leakage current and location identification information and the set functional relationship, it is possible to more accurately determine whether there is a real abnormal leakage phenomenon in the multi-lamp control system, thereby further improving the reliability of the detection results.

[0118] As can be seen from the foregoing, the lighting devices are connected to the preset reference position and to each lighting device through power transmission lines. Each power transmission line may experience abnormal leakage. Therefore, when it is determined that there is abnormal leakage in the multi-lamp control system, it is also possible to specifically determine which power transmission line is experiencing abnormal leakage.

[0119] Based on this, the leakage detection method in the embodiments of this specification may further include: generating a leakage monitoring report corresponding to the leakage status of the multi-lamp control system; locating the power transmission line segment where the abnormal leakage phenomenon occurs based on the leakage monitoring report, and disconnecting the power supply to the power transmission line segment.

[0120] Specifically, the power supply equipment provides power to each lighting device through power transmission lines. In actual operation, only some power transmission lines may experience abnormal leakage. Since leakage monitoring reports can characterize the operating status of each power transmission line, it's possible to determine which specific line is experiencing the abnormal leakage. This allows for the disconnection of power to only the affected line, preventing multiple lighting devices from malfunctioning due to a single leakage. In other words, other lighting devices can continue to operate normally, providing a continuous lighting environment, thus making the multi-lamp control system more versatile.

[0121] Furthermore, by disconnecting the power supply to the power transmission line segment, damage to the multi-lamp control system caused by leakage power transmission line segment can be effectively avoided, thereby improving the safety of the multi-lamp control system application.

[0122] As a specific example, combined with Figure 7 , Figure 7 p power transmission line segments are shown. If, according to the leakage current monitoring report, it is determined that an abnormal leakage has occurred in the power transmission line segment between lighting device 1 and lighting device 2, then only the power supply to the power transmission line segment between lighting device 1 and lighting device 2 can be disconnected, while the power transmission line segments between other lighting devices remain powered normally.

[0123] In some other embodiments, when a leakage current is detected in the multi-lamp control system, an alarm signal can be output to remind maintenance personnel to perform repairs.

[0124] In practical implementation, one alarm signal generally corresponds to one detection result. In order to more accurately determine the leakage status of the multi-lamp control system, in some embodiments of this specification, multiple alarm signals can be acquired within a certain time period, and the corresponding detection results can be judged in sequence according to the preset abnormal judgment conditions. When the number of status judgment results reaches the preset threshold, the final warning signal is output to remind maintenance personnel to carry out maintenance.

[0125] It is understood that the above description provides multiple embodiment solutions, and the optional methods described in each embodiment solution can be combined and cross-referenced with each other without conflict, thereby extending to a variety of possible embodiment solutions, all of which can be considered as the embodiment solutions disclosed and made public in this specification.

[0126] Accordingly, this specification also provides a leakage current detection device for a multi-lamp control system, which will be described in detail below with reference to the accompanying drawings and examples.

[0127] It should be noted that the leakage current detection device for the multi-lamp control system described below can be considered as a functional module required to implement the leakage current detection method for the multi-lamp control system provided in the embodiments of this specification; the content of the leakage current detection device for the multi-lamp control system described below can be referred to in correspondence with the content of the leakage current detection method described above.

[0128] Reference Figure 6 The schematic diagram shown here illustrates a leakage current detection device for a multi-lamp control system according to an embodiment of this specification. The multi-lamp control system 100 may include multiple lighting devices, each having position identification information relative to a preset reference position, as described in some embodiments of this specification, such as... Figure 6 As shown, the leakage current detection device 200 may include:

[0129] Multiple leakage current detection units, wherein at least one leakage current detection unit is coupled to the main control unit and the first lighting device respectively, and the other leakage current detection units are coupled to each adjacent lighting device, which is suitable for obtaining the leakage current of each power transmission line segment;

[0130] Multiple control cabinets are connected one-to-one with leakage current detection units, which is suitable for transmitting leakage current.

[0131] The main control unit 230 is located at a preset reference position and connected to each control cabinet. It is adapted to determine the functional relationship between leakage current and position identification information based on the position identification information of each lighting device and the leakage current on each power transmission line segment; and to determine the leakage status of the multi-lamp control system based on the functional relationship between leakage current and position identification information and the set functional relationship.

[0132] Combination Figure 6 The multi-lamp control system 100 may include multiple lighting devices, such as Figure 6 The lighting devices 101, 102, ..., 100m, 10n shown in the diagram correspond to a plurality of leakage current detection units, which can be the same as the number of lighting devices, for example... Figure 1 The leakage current detection units are 211, 212, ..., 21n. Correspondingly, there are also multiple control cabinets, which can be the same as the number of leakage current detection units. For example... Figure 1 Control cabinets 221, 222, ..., 22n are provided. Here, n and m are integers greater than 1, and n = m + 1. The number of lighting devices, leakage current detection units, and control cabinets can be determined based on actual needs and is not specifically limited here.

[0133] In a specific implementation, one of the leakage current detection units can be coupled to the main control unit and the first lighting device respectively, and the other leakage current detection units can be coupled to the adjacent lighting devices respectively. For example, leakage current detection unit 211 can be coupled to the main control unit 230 and the first lighting device 101 respectively; leakage current detection unit 212 can be coupled to the adjacent lighting devices 101 and 102 respectively; ...; leakage current detection unit 21n can be coupled to the adjacent lighting devices 10m and 10n respectively.

[0134] Each control cabinet can be coupled to a leakage current detection unit in a one-to-one correspondence, and each control cabinet is coupled to the main control unit. For example, control cabinet 221 can be coupled to leakage current detection unit 211; control cabinet 222 can be coupled to leakage current detection unit 212; ...; control cabinet 22n can be coupled to leakage current detection unit 21n, and control cabinets 221, 222, ..., 22n are all coupled to the main control unit 230.

[0135] For ease of understanding, the following explanation will be based on the example of detecting the leakage current status of the power transmission line segment between lighting device 101 and lighting device 102.

[0136] The leakage current detection unit 212 can detect the leakage current of the power transmission line segment between the lighting device 101 and the lighting device 102, and output the detected leakage current to the main control unit 230 through the control cabinet 222.

[0137] The main control unit 230 can determine the functional relationship between the leakage current and the location identification information based on the location identification information of each lighting device and the leakage current on each power transmission line segment, for example, obtaining... Figure 4 The measured leakage line L1 is shown, and the slope value of the power transmission line segment between lighting device 101 and lighting device 102 is determined. Then, the slope value of the power transmission line segment between lighting device 101 and lighting device 102 can be compared with the standard slope value to determine the leakage state of the power transmission line segment between lighting device 101 and lighting device 102.

[0138] For example, when it is determined that the slope of the power transmission line segment between lighting device 101 and lighting device 102 is greater than the standard slope value, it is determined that an abnormal leakage current has occurred in the power transmission line segment between lighting device 101 and lighting device 102; when it is determined that the slope of the power transmission line segment between lighting device 101 and lighting device 102 is close to the standard slope value, it is determined that a natural leakage current has occurred in the power transmission line segment between lighting device 101 and lighting device 102.

[0139] It is understandable that the process for determining the leakage status of the power transmission line segments between other lighting devices can be found in the description of the leakage status of the power transmission line segments between lighting device 101 and lighting device 102, and will not be repeated here.

[0140] Since the functional relationship can characterize the actual leakage state of each power transmission line segment, and the set functional relationship between leakage current and location identification information can characterize the natural leakage state of each power transmission line segment, the leakage state of the multi-lamp control system can be determined based on the functional relationship and the set functional relationship, thus realizing the detection of the leakage state of the multi-lamp control system.

[0141] It should be noted that the structure of the leakage current detection device shown in the above embodiments is only for illustrative purposes. For example, in actual testing, the number of leakage current detection units and control cabinets can be adjusted according to the number of lighting devices to achieve leakage current detection of all power transmission line segments; for another example, leakage current detection of all power transmission line segments can be determined by either voltage or leakage current; for yet another example, in the embodiments of this specification, the power transmission line segments may include two parts: one part is the power transmission line segment between each lighting device; the other part is the power transmission line segment between the lighting device and the main control unit; and for yet another example, a unified power supply device or component provides power to each lighting device.

[0142] To enable those skilled in the art to better understand and implement the embodiments of this specification, the following provides some specific examples of the specific implementation methods of the leakage current detection device in the embodiments of this specification.

[0143] In some embodiments of this specification, all leakage current detection units can be used to detect the leakage current of each power transmission line segment in real time and output the detected leakage current to the main control unit, thereby determining whether there is abnormal leakage current in the power transmission line segment.

[0144] In one implementation, the leakage current detection unit may include a residual current transformer, which may be installed on the power transmission line of the corresponding lighting device. Therefore, any power transmission line can pass through the residual current transformer, and each residual current transformer can detect the leakage current of the power transmission line in real time. When there is no leakage point in any power transmission line, the leakage current detected by the residual current transformer is zero.

[0145] For example, when Figure 6 When an abnormal leakage occurs in the power transmission line between the lighting device 101 and the lighting device 102, both leakage detection units 211 and 212 can detect the abnormal leakage current value.

[0146] In some embodiments of this specification, when the functional relationship between leakage current and location identification information is determined, the leakage status of the multi-lamp control system can be determined based on the slope value of each power transmission line segment.

[0147] As a specific example, the main control unit can determine the slope value corresponding to each power transmission line segment based on the functional relationship between leakage current and location identification information, and determine the standard slope value corresponding to each power transmission line segment based on the set functional relationship between leakage current and location identification information, and determine the leakage status of the multi-lamp control system based on the slope value and the standard slope value.

[0148] For details of the judgment process, please refer to the aforementioned section. Figures 3 to 5 The description of that will not be elaborated here.

[0149] Due to various factors (such as power supply voltage fluctuations, sudden power outages, etc.), the detection results obtained by using standard slope values ​​for abnormal leakage current detection may not accurately reflect the actual leakage current status of the multi-lamp control system. In other words, the detection results may be true or they may be biased.

[0150] In some embodiments of this specification, considering the impact of ground water on the operating status of the multi-lamp control system, in specific implementations, water immersion can also be considered when determining the leakage status of the multi-lamp control system.

[0151] As a specific example, the leakage detection device in the embodiments of this specification may further include a water immersion sensor for acquiring the water immersion status of each lighting device and transmitting it to the main control unit. Accordingly, the main control unit is also adapted to determine the leakage status of the multi-lamp control system based on the water immersion status of each lighting device, the functional relationship between leakage current and location identification information, and a set functional relationship.

[0152] For example, continue to refer to Figure 4 If the water immersion sensor detects that the second and / or third lighting device is submerged in water, that is, the power transmission line between the second and third lighting devices is submerged in water, it can be determined that there is an abnormal leakage in the power transmission line between the second and third lighting devices.

[0153] By using a leakage current detection device with the above-described structure, since the water immersion status of each lighting device, the functional relationship between leakage current and location identification information and the set functional relationship are considered simultaneously, it is possible to more accurately determine whether there is a real abnormal leakage current phenomenon in the multi-lamp control system, thereby further improving the reliability of the detection results.

[0154] As can be seen from the foregoing, each lighting device and the lighting device and the main control unit are connected by power transmission lines. Each power transmission line may experience abnormal leakage. Therefore, when it is determined that there is abnormal leakage in the multi-lamp control system, it is also possible to specifically determine which power transmission line is experiencing abnormal leakage.

[0155] Based on this, the leakage current detection device in the embodiments of this specification may further include a monitoring report generation unit, disposed between the main control unit and each control cabinet, adapted to generate a leakage current monitoring report corresponding to the leakage current status of the multi-lamp control system. Furthermore, the main control unit is also adapted to locate the power transmission line segment where the abnormal leakage current phenomenon occurs based on the leakage current monitoring report, and disconnect the power supply to the power transmission line segment. Moreover, by disconnecting the power supply to the power transmission line segment, damage to the multi-lamp control system caused by the leakage current can be effectively avoided, improving the safety of the multi-lamp control system application.

[0156] In some other embodiments, when a leakage current is detected in the multi-lamp control system, an alarm signal can be output to remind maintenance personnel to perform repairs.

[0157] In practice, leakage current data can be input to the main control unit via an external interface or via wireless communication. This specification does not limit the communication method between the main control unit and the control cabinet.

[0158] In practical applications, communication between the main control unit and the control cabinet can be achieved using at least one of the following methods:

[0159] Wireless communication methods include Bluetooth, Wi-Fi, Near Field Communication (NFC), Zigbee, and Wireless Local Area Network (WLAN); wired communication methods include Power Line Communication (PLC) and RS485.

[0160] In some embodiments of this specification, since power line carrier communication enables long-distance transmission of trigger signals, the main control unit and the control cabinet can transmit signals through power line carrier communication. Furthermore, using this communication method, the main control unit and the control cabinet can be set at relatively far distances to monitor the process.

[0161] In specific implementation, in order to achieve continuous monitoring of the leakage current status of the multi-lamp control system, the leakage current detection device in the embodiments of this specification may further include: a cloud server, coupled to each control cabinet, suitable for storing the leakage current acquired by each leakage current detection unit.

[0162] Specifically, the control cabinet can output the leakage current obtained by each leakage detection unit to the cloud server for storage, and can centrally monitor the leakage status of the multi-lamp control system. For example, by comparing the leakage curves of power transmission line segments over many years or the leakage curves of power transmission line segments on the same day in different years, it can determine which months or weather conditions are prone to abnormal leakage in the multi-lamp control system, so as to maintain the multi-lamp control system.

[0163] In practice, to enable leakage current data to be uploaded, the control cabinet and cloud server can also use wireless communication methods such as Bluetooth, Wifi, NFC, Zigbee, and WLAN, as well as wired communication methods, to upload leakage current data to the cloud server.

[0164] In actual monitoring, to facilitate researchers to obtain leakage data more intuitively, the leakage detection device may also include: a data display module, coupled to each leakage detection unit, suitable for displaying leakage data obtained from the leakage detection unit.

[0165] As a specific example, the data display module may be a host computer. In other embodiments, the data display module may be a display screen or other display device capable of displaying images and / or text.

[0166] To facilitate understanding of the operation of the leakage current detection device in the embodiments of this specification, the following detailed description is provided with reference to the accompanying drawings and specific examples.

[0167] See Figure 7 The diagram shown here illustrates the structure of a leakage current detection device in a specific application scenario of an embodiment of this specification. Figure 7As shown, a multi-lamp control system may include p lighting devices. These p lighting devices are connected to each other and to the main control unit via power transmission lines. The power transmission line between lighting device 1 and the main control unit is connected in series with a leakage current detection unit 1, the power transmission line between lighting device 1 and lighting device 2 is connected in series with a leakage current detection unit 2, and so on. Finally, the power transmission line between the last two lighting devices is connected in series with a leakage current detection unit p, where p is an integer greater than 1.

[0168] Leakage detection unit 1 can transmit the detected leakage current I1 to the main control unit through the control cabinet coupled to it; leakage detection unit 2 can transmit the detected leakage current I2 to the main control unit through the control cabinet coupled to it; ... leakage detection unit p can transmit the detected leakage current Ip to the main control unit through the control cabinet coupled to it, so that the main control unit can determine the leakage status of the multi-lamp control system.

[0169] It should be noted that when Figure 7 When there is a leakage point in the power transmission line between the lighting device 1 and the lighting device 2, both leakage detection units 1 and 2 can detect abnormal leakage current values, while the leakage current detected by leakage detection units 3 to p is zero.

[0170] In some embodiments of this specification, the main control unit has a processing module. The processing module can be implemented by a processing chip such as a central processing unit (CPU), a field programmable gate array (FPGA), or a micro controller unit (MCU), or by an application specific integrated circuit (ASIC) or one or more integrated circuits configured to implement the embodiments of this specification.

[0171] While the embodiments disclosed in this specification are as described above, the present invention is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A leakage current detection method for a multi-lamp control system, characterized in that, The multi-lamp control system includes multiple lighting devices, wherein the leakage current detection method includes: Obtain the position identification information of each lighting device relative to a preset reference position; The leakage current of the power transmission line segment between the preset reference position and the first lighting device, and the leakage current of the power transmission line segment between each adjacent lighting device are obtained. Based on the location identification information of each lighting device and the leakage current on each power transmission line segment, determine the functional relationship between the leakage current and the location identification information; The leakage state of the multi-lamp control system is determined based on the functional relationship between leakage current and location identification information and a set functional relationship; the set functional relationship characterizes the natural leakage state of multiple power transmission line segments. The step of determining the leakage state of the multi-lamp control system based on the functional relationship between leakage current and location identification information and a set functional relationship includes: Based on the functional relationship between leakage current and location identification information, determine the slope value corresponding to each power transmission line segment; Based on the set function relationship between leakage current and location identification information, determine the standard slope value corresponding to each power transmission line segment; The leakage current status of the multi-lamp control system is determined based on the slope value and the standard slope value. The step of determining the leakage current state of the multi-lamp control system based on the slope value and the standard slope value includes: When the difference between the slope value and the standard slope value is greater than a preset difference, it is determined that the multi-lamp control system has an abnormal leakage phenomenon. When the difference between the slope value and the standard slope value is less than the preset difference, it is determined that there is no abnormal leakage current in the multi-lamp control system.

2. The leakage current detection method according to claim 1, characterized in that, Determining the leakage current status of the multi-lamp control system based on the slope value and the standard slope value includes: The standard slope value corresponding to each power transmission line segment is compensated to obtain the compensated slope value of each power transmission line segment; The leakage current status of the multi-lamp control system is determined based on the slope value and the compensation slope value.

3. The leakage current detection method according to claim 1 or 2, characterized in that, Also includes: Generate a leakage current monitoring report corresponding to the leakage current status of the multi-lamp control system; Based on the leakage current monitoring report, locate the power transmission line segment where the abnormal leakage current occurred and disconnect the power supply to the power transmission line segment.

4. The leakage current detection method according to claim 1 or 2, characterized in that, Also includes: Obtain information on the water immersion status of each lighting device; The leakage status of the multi-lamp control system is determined based on the water immersion status of each lighting device, the functional relationship between leakage current and location identification information, and the set functional relationship.

5. A leakage current detection device for a multi-lamp control system, characterized in that, The multi-lamp control system includes multiple lighting devices, each of which has position marking information relative to a preset reference position. The leakage current detection device includes: Multiple leakage current detection units, wherein at least one leakage current detection unit is coupled to the main control unit and the first lighting device respectively, and the other leakage current detection units are coupled to each adjacent lighting device, which is suitable for obtaining the leakage current of each power transmission line segment; Multiple control cabinets are connected one-to-one with leakage current detection units, which are suitable for transmitting the leakage current. The main control unit, located at the preset reference position and connected to each control cabinet, is adapted to determine the functional relationship between leakage current and position identification information based on the position identification information of each lighting device and the leakage current on each power transmission line segment; and to determine the leakage state of the multi-lamp control system based on the functional relationship between leakage current and position identification information and a set functional relationship; the set functional relationship characterizes the natural leakage state of multiple power transmission line segments. In the step of determining the leakage state of the multi-lamp control system based on the functional relationship between leakage current and location identification information and a set functional relationship, the main control unit is further adapted to determine the slope value corresponding to each power transmission line segment based on the functional relationship between leakage current and location identification information; determine the standard slope value corresponding to each power transmission line segment based on the set functional relationship between leakage current and location identification information; and determine the leakage state of the multi-lamp control system based on the slope value and the standard slope value. In the step of determining the leakage state of the multi-lamp control system based on the slope value and the standard slope value, the main control unit is further adapted to determine that the multi-lamp control system has an abnormal leakage phenomenon when the difference between the slope value and the standard slope value is greater than a preset difference; and to determine that the multi-lamp control system does not have an abnormal leakage phenomenon when the difference between the slope value and the standard slope value is less than the preset difference.

6. The leakage current detection device according to claim 5, characterized in that, The leakage current detection unit includes a residual current transformer, which is installed on the power transmission line of the corresponding lighting device.

7. The leakage current detection device according to claim 5, characterized in that, The main control unit is adapted to determine the slope value corresponding to each power transmission line segment according to the functional relationship between leakage current and location identification information, and to determine the standard slope value corresponding to each power transmission line segment according to the set functional relationship between leakage current and location identification information, and to determine the leakage status of the multi-lamp control system based on the slope value and the standard slope value.

8. The leakage current detection device according to any one of claims 5 to 7, characterized in that, Also includes: The monitoring report generation unit is located between the main control unit and each control cabinet, and is suitable for generating a leakage monitoring report corresponding to the leakage status of the multi-lamp control system. The main control unit is also adapted to locate the power transmission line segment where abnormal leakage occurs based on the leakage monitoring report, and disconnect the power supply to the power transmission line segment.

9. The leakage current detection device according to any one of claims 5 to 7, characterized in that, Also includes: A water immersion sensor is used to acquire the water immersion status of each lighting device and transmit the data to the main control unit. The main control unit is also adapted to determine the leakage status of the multi-lamp control system based on the water immersion status of each lighting device, the functional relationship between leakage current and location identification information, and a set functional relationship.

10. The leakage current detection device according to any one of claims 5 to 7, characterized in that, The control cabinet and the main control unit communicate through at least one of the following methods: Bluetooth; Wifi; Zigbee; Power line carrier communication; RS485 communication.

11. A multi-lamp control system, characterized in that, include: Multiple lighting devices, each with position marking information relative to a preset reference position, are suitable for providing illumination; The leakage current detection device according to any one of claims 5 to 10 is adapted to detect the leakage current of each power transmission line segment, and determine the leakage current status of the multi-lamp control system based on the leakage current of each power transmission line segment and the location identification information of each lighting device.

Images