Wiring error detection method for emergency lighting system, emergency driver and lighting system

Abstract

The invention discloses an emergency lighting system wiring error detection method, an emergency drive and a lighting system.The emergency lighting system is provided with a charging live wire, a controlled live wire and a zero line, and the charging live wire is configured to be connected with the emergency drive in the system; whether a charging live wire is connected wrongly is detected by the following steps: connecting a specified detection pin of a microprocessor to a sampling output end of a sampling circuit of an emergency drive, so that when the charging live wire is powered on and powered off, the voltage of the pin generates level jump; the microprocessor calculates the power-off frequency of the charging live wire by detecting the level change of the specified detection pin; and the microprocessor judges whether the charging live wire is wrongly connected according to the counting result of the power-off times of the charging live wire in a certain time period or a plurality of time periods. According to the invention, automatic detection of wrong wiring of the charging live wire can be realized through a software algorithm without newly adding a line.

Description

Technical Field

[0001] This invention relates to the field of emergency lighting, and more particularly to a method for detecting wiring errors in an emergency lighting system, an emergency drive, and a lighting system. Background Technology

[0002] Emergency lighting systems are a crucial component of building safety facilities, providing illumination in emergencies such as fires and power outages to ensure safe evacuation. Their core function relies on correct input wiring, including the main power live wire (i.e., the charging live wire), neutral wire, and control wire (i.e., the controlled live wire). However, in actual installation, wiring errors or poor contact frequently occur, causing emergency lighting systems to malfunction.

[0003] Currently, the wiring inspection of emergency lighting systems mainly relies on manual checks, which has at least the following problems: Inefficient: Manual inspection is time-consuming and labor-intensive, and it is difficult to cover large-scale building complexes; Inaccuracy: It is difficult to distinguish between charging live wires and controlled live wires, and manual inspection is prone to omissions or misjudgments, especially the inspection of concealed lines; Poor real-time performance: It is impossible to monitor the wiring status in a timely manner, and it is difficult to provide timely warnings after a fault occurs; Insufficient intelligence: The lack of automated and intelligent detection methods makes it impossible to meet the needs of modern intelligent buildings.

[0004] The disclosure of the above background technical content is only for the purpose of assisting in understanding the concept and technical solution of this application, and does not necessarily provide technical instruction. Summary of the Invention

[0005] The purpose of this invention is to provide a method for diagnosing whether the charging live wire is incorrectly wired based on an algorithm, which can achieve automatic detection without adding new wiring through software algorithms.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A method for detecting wiring errors in an emergency lighting system, wherein the emergency lighting system is equipped with a charging live wire, a controlled live wire, and a neutral wire, the charging live wire being configured to connect to an emergency drive within the emergency lighting system, and the method being configured to detect whether the charging live wire is wired incorrectly. The emergency drive is equipped with a sampling circuit, which connects a designated detection pin of the microprocessor to the sampling output terminal of the sampling circuit, so that when the charging wire is powered on, the voltage of the designated detection pin is high or low, and when the charging wire is powered off, the voltage of the designated detection pin jumps to the opposite level. The microprocessor calculates the number of times the charging wire is de-energized by detecting the level change of the designated detection pin. The microprocessor determines whether the charging wire is wired incorrectly based on the count of the number of times the charging wire is disconnected within a certain time period or multiple time periods.

[0007] Furthermore, based on any one or more of the aforementioned technical solutions or combinations thereof, if one or more of the following conditions are met, then the charging live wire wiring is determined to be incorrect: Within a certain time period T, the counting result of the counter exceeds the preset first power outage number threshold N1; And / or, the count results for each of multiple consecutive time periods exceed the preset second power outage threshold N2; And / or, the number of time periods in which the corresponding count results exceed the preset third power outage threshold N3 exceeds the preset number threshold, where N1, N2, and N3 are integers that are equal or unequal.

[0008] Furthermore, following any one or a combination of the aforementioned technical solutions, if the counter's count exceeds a preset first power outage threshold N1 within a certain time period T, it includes: The time period T is 24 hours, and the counting result reaches 2 or 3 times or more within one time period; And / or, the time period T is 6 hours, and the count result reaches 2 times within one time period; And / or, the time period T is 12 hours, and the count result reaches 2 times within one time period; And / or, the time period T is 48 hours, and the count result reaches more than 2 times within one time period; And / or, the time period T is 168 hours, and the count result reaches more than 5 times within one time period.

[0009] Furthermore, following any one or a combination of the aforementioned technical solutions, if the counting results for multiple consecutive time periods all exceed the preset second power outage threshold N2, the following includes: The count result for each of the three consecutive time periods is more than once; And / or, the count results for each of two consecutive time periods are more than once; And / or, the count results for each of the three consecutive time periods are more than twice; And / or, the count results for each of the three consecutive time periods are more than twice.

[0010] Furthermore, following any one or a combination of the aforementioned technical solutions, the number of time periods in which the corresponding counting result exceeds the preset third power outage threshold N3 within a preset time period includes: The preset time period is at least 3×T, and within this time period, there are two or more time periods corresponding to the counting results that are all more than once; And / or, the time period is 24 hours, the preset time period is 168 hours, and within this time period, the counting result of five or more time periods is more than once. The "more than once" mentioned in this invention includes the stated number; for example, a counting result of more than once indicates that the counting result can be once, or it can be two or more times.

[0011] Furthermore, based on any one or a combination of the aforementioned technical solutions, if it is determined that the charging wire is incorrectly wired, an indicator light will be used to emit a light signal to indicate the error, and / or an audible alarm will be used to emit an audible signal to indicate the error, and / or a communication module will be used to send a communication signal to a preset terminal to indicate the error.

[0012] Furthermore, as described above, the indicator light and / or the audible alarm and / or the communication module are powered by an external AC power source.

[0013] Furthermore, following any or a combination of the aforementioned technical solutions, the sampling circuit includes a branch formed by a first resistor and a second resistor connected in series. One end of the branch is connected to the output terminal of the emergency-driven AC-DC converter, and the other end of the branch is grounded. The connection point of the first resistor and the second resistor is connected to a designated detection pin of the microprocessor.

[0014] According to another aspect of the present invention, an emergency drive is provided, comprising an AC-DC converter, a sampling circuit, and a microprocessor, wherein the input terminal of the AC-DC converter is connected to one end of a charging live wire, and the output terminal of the AC-DC converter is connected to the sampling circuit; a designated detection pin of the microprocessor is connected to the sampling output terminal of the sampling circuit, such that when the charging live wire is energized, the voltage of the designated detection pin is high or low, and when the charging live wire is de-energized, the voltage of the designated detection pin jumps to the opposite level; The microprocessor calculates the number of times the charging wire is de-energized by detecting the level change of the designated detection pin. The microprocessor determines whether the charging wire is wired incorrectly based on the count of the number of times the charging wire is disconnected within a certain time period or multiple time periods.

[0015] Furthermore, based on any one or more of the aforementioned technical solutions or combinations thereof, if one or more of the following conditions are met, then the charging live wire wiring is determined to be incorrect: Within a certain time period T, the counting result of the counter exceeds the preset first power outage number threshold N1; And / or, the count results for each of multiple consecutive time periods exceed the preset second power outage threshold N2; And / or, the number of time periods in which the corresponding count results exceed the preset third power outage threshold N3 exceeds the preset number threshold, where N1, N2, and N3 are integers that are equal or unequal.

[0016] Furthermore, following any or a combination of the aforementioned technical solutions, the sampling circuit includes a branch formed by a first resistor and a second resistor connected in series. One end of the branch is connected to the output terminal of the emergency-driven AC-DC converter, and the other end of the branch is grounded. The connection point of the first resistor and the second resistor is connected to a designated detection pin of the microprocessor.

[0017] Furthermore, based on any or a combination of the aforementioned technical solutions, the emergency drive provided by the present invention further includes a battery management module and an emergency conversion module, wherein the battery management module is configured to control the DC power output by the AC-DC converter to charge the emergency battery; The emergency switching module is configured to connect the discharge circuit of the emergency battery to the external lighting load when an external AC power supply is detected to be disconnected, and to disconnect the discharge circuit of the emergency battery from the external lighting load when an external AC power supply is detected to be restored.

[0018] According to another aspect of the present invention, an emergency lighting system with wiring error detection function is provided, comprising an LED driver, an emergency battery, a lighting load, and the emergency driver as described above, wherein the LED driver is configured with an AC input interface, an AC-DC converter, and a DC output interface, the AC input interface being connected to the controlled live wire and the neutral wire respectively; the DC output interface being connected to the lighting load; When the voltage of the designated detection pin of the emergency drive microprocessor is a low level or a high level indicating that the charging live wire is de-energized, the switching device controls the lighting load to connect to the discharge circuit of the emergency battery; when the voltage of the designated detection pin of the emergency drive microprocessor is a high level or a low level indicating that the charging live wire is energized, the switching device controls the lighting load to disconnect from the discharge circuit of the emergency battery.

[0019] Furthermore, based on any or a combination of the aforementioned technical solutions, the emergency lighting system provided by the present invention further includes indicator lights and / or sound alarms and / or communication modules; The indicator light is configured to emit a visual signal to indicate an error when the charging wire is found to be wired incorrectly. The sound alarm is configured to emit a prompt message in the form of an audible signal when it is determined that the charging live wire is wired incorrectly. The communication module is configured to send a prompt message in the form of a communication signal to a preset terminal when it is determined that the charging wire is connected incorrectly.

[0020] Furthermore, as described above, the indicator light and / or the audible alarm and / or the communication module are powered by an external AC power source.

[0021] The beneficial effects of the technical solution provided by this invention are as follows: a. It uses intelligent diagnostic algorithms to determine whether the wiring is correct and can identify reverse wiring faults; b. It can issue a timely warning when it automatically detects wiring errors. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic block diagram of an emergency lighting system with wiring error detection function provided as an exemplary embodiment of the present invention; Figure 2 A flowchart illustrating an exemplary embodiment of the present invention for detecting wiring errors in an emergency lighting system; Figure 3 A schematic diagram of the structure of an emergency-driven sampling circuit provided as an exemplary embodiment of the present invention; Figure 4 A detailed flowchart of a wiring error detection method provided for an exemplary embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0026] In one embodiment of the present invention, a method for detecting wiring errors in an emergency lighting system is provided, wherein the emergency lighting system is configured with a charging live wire, a controlled live wire, and a neutral wire. Figure 1 This is a schematic diagram of an emergency lighting system. The charging live wire is configured to connect to the emergency drive inside the emergency lighting system. With correct wiring, the other end of the charging live wire should be connected to an external AC power source (not shown). Since the external AC power source charges the emergency battery (rechargeable battery) through this live wire and the emergency drive, this live wire is defined in this field as a charging live wire. In other words, unless the external AC power source fails (i.e., the mains power is interrupted), the charging live wire should always be powered. The wiring error detection method for the emergency lighting system provided in this embodiment aims to detect whether the charging live wire is wired incorrectly, i.e., not correctly connected to the external AC power source. For example, the charging live wire and the controlled live wire are reversed, or the switch that should be connected to the controlled live wire is incorrectly connected to the charging live wire. In this case of wiring error, it is not that the external AC power source has failed, but simply the normal switch-off operation will cause the emergency lighting system to mistakenly activate the emergency lighting function. Therefore, even when the emergency lighting function is not needed, the external lighting load will consume the emergency battery's power, and the emergency battery cannot be charged until the incorrectly wired switch is closed again. More importantly, this type of wiring error is difficult to detect if the switch is installed in a different area than the external lighting load.

[0027] See Figure 2 The specific procedure for detecting wiring errors in emergency lighting systems is as follows: like Figure 1 and Figure 3As shown, the emergency drive is equipped with a sampling circuit, which connects the designated detection pin of the microprocessor to the sampling output terminal of the sampling circuit, so that the state of the charging live wire, whether it is powered on or off, can be characterized by the voltage level of the designated detection pin. That is, the voltage level of the designated detection pin in the powered-on state is opposite to that in the powered-off state.

[0028] For example, when the charging cable is powered on, the voltage of the designated detection pin is high; when the charging cable is powered off, the voltage of the designated detection pin is low. Conversely, when the charging cable is powered on, the voltage of the designated detection pin is low; when the charging cable is powered off, the voltage of the designated detection pin is high. The following explanation uses the example of the designated detection pin being high when the charging cable is powered on to illustrate the technical solution: The microprocessor calculates the number of times the charging wire is powered off by detecting the level change of the designated detection pin. Specifically, it can use its internal counter to count the number of times the voltage of the designated detection pin jumps from high level to low level. The microprocessor uses its internal clock module to keep track of time. Every time a preset time period is elapsed, it records the counting result of the counter and then clears the counter to zero. The microprocessor determines whether the charging wire is wired incorrectly based on the counter's count results (i.e., the number of times the charging wire is disconnected) within a certain time period or multiple time periods.

[0029] In one specific embodiment, the designated detection pin is the GPIO pin of the MCU.

[0030] The specific method for determining whether the charging power wire is wired incorrectly based on the counting results is as follows: If one or more of the following conditions are met, then the charging power wire is determined to be wired incorrectly: Within a certain time period T, the counting result of the counter exceeds the preset first power outage number threshold N1; And / or, the count results for each of multiple consecutive time periods exceed the preset second power outage threshold N2; And / or, the number of time periods in which the corresponding count results exceed the preset third power outage threshold N3 exceeds the preset number threshold, where N1, N2, and N3 are integers that are equal or unequal.

[0031] This invention does not limit the application of specific conditions or the combination of multiple conditions, nor does it limit the order of judgment under multiple conditions. It also does not limit the duration of the time period T or the specific values ​​of the integers N1, N2, and N3.

[0032] Taking a 24-hour period as an example, one of the criteria for determining a wiring error in the charging wire is that the counter count (i.e., the number of times the charging wire is disconnected / the number of times the GPIO pin voltage transitions from high to low) reaches 2 within 24 hours. This invention does not limit the count to 2. For example, in areas with unstable power supply, or during peak power consumption periods prone to power outages (such as summer), the threshold N1 for the first power outage can be increased accordingly. This invention does not limit the time period to 24 hours; it can also be set to 6 hours, 12 hours, or 48 hours; or it can be set to 168 hours (7 days), with a count of 5 within this period used as the criterion for determining a wiring error in the charging wire. This wiring error detection method is particularly suitable for situations where the charging wire is incorrectly connected to an induction switch. For example, when no human signal is detected in the workshop or corridor for a period of time, the induction switch will automatically disconnect. In this case, the induction switch will typically disconnect 2 or 3 times or more per day (inclusive), causing the counter count to meet the threshold, thus determining a wiring error in the charging wire.

[0033] Another criterion for determining a wiring error in the charging live wire is that the counter count reaches once for each of the three consecutive days. This wiring error detection method is particularly applicable when the charging live wire is incorrectly connected to a mechanical switch, such as a workshop switch or main switch, which is turned on once at the start of the workday and turned off once at the end. This invention does not limit the number of consecutive days to three days, nor does it limit the number of counts within each time period to once.

[0034] Another criterion for determining that the charging live wire is incorrect is that the number of time periods in which the corresponding count result exceeds the preset third power outage threshold N3 exceeds the preset number threshold. For example, within three days, the corresponding count result reaches once on two days; or within seven days, the corresponding count result reaches once on five days.

[0035] To reiterate, the specific duration of the aforementioned time period and the specific number of times can be adjusted to better meet the actual situation. Figure 4 A specific embodiment is shown: Every 24 hours, the counter's count result for the current time period is tallied and stored. Simultaneously, the counter is reset to zero, and the counting and timing process begins for the next time period. If this cycle is repeated, each time period and its corresponding count result can be stored in memory or a cache. For example... Figure 4 As shown, if the count result is 3 or more in the current 24-hour cycle, it is determined that the charging wire is connected incorrectly; otherwise, historical stored data is retrieved. If the corresponding count result is 1 or more in three consecutive cycles, it is determined that the charging wire is connected incorrectly.

[0036] If none of the set conditions for determining wiring errors are met, then it is determined that there is no wiring error in the charging power line.

[0037] This invention also provides an alarm method for incorrect charging wire wiring: if the wiring error is determined, an indicator light emits a light signal to alert the user, and / or an audible alarm emits an audible signal to alert the user, and / or a communication module sends a communication signal to a preset terminal to alert the user. Furthermore, the indicator light, / or audible alarm, and / or communication module are powered by an external AC power supply. In this embodiment, the charging wire wiring error is caused by misinterpreting a normal switch shutdown as an abnormal disconnection of the external AC power supply, when in fact the external AC power supply is operating normally. Therefore, the external AC power supply powers the indicator light, / or audible alarm, and / or communication module used for alarms, and this alert signal continues to occur as the external AC power supply operates normally, making it easy for the user to detect the wiring error and correct it promptly.

[0038] In one specific embodiment of the present invention, such as Figure 3 As shown, the sampling circuit includes a branch formed by a first resistor R1 and a second resistor R2 connected in series. One end of this branch is connected to the output terminal of the emergency-driven AC-DC converter, and the other end of the branch is grounded. The connection point of the first resistor R1 and the second resistor R2 is connected to the GPIO pin of the microprocessor. This invention does not limit the sampling circuit to... Figure 3 As long as the sampling circuit connected to the GPIO pin can switch the GPIO pin from high level to low level when the charging wire is powered off, the technical solution of this invention can be realized and should be considered to fall within the protection scope of this invention.

[0039] In one embodiment of the present invention, an emergency drive is provided, such as... Figure 1 As shown, the emergency drive includes an AC-DC converter, a sampling circuit, and a microprocessor. The input terminal of the AC-DC converter is connected to one end of the charging cable, and the output terminal of the AC-DC converter is connected to the sampling circuit. The GPIO pin of the microprocessor is connected to the sampling output terminal of the sampling circuit, so that when the charging cable is powered on, the voltage of the GPIO pin is high or low, and when the charging cable is de-powered, the voltage of the GPIO pin is low or high. The microprocessor calculates the number of times the charging wire is de-energized by detecting the level change of the designated detection pin. The microprocessor uses its internal clock module to keep track of time. Every time a preset time period is elapsed, it records the counting result of the counter and then clears the counter to zero. The microprocessor determines whether the charging wire is wired incorrectly based on the count of the number of times the charging wire is disconnected within a certain time period or multiple time periods.

[0040] The charging live wire is determined to be incorrectly wired if one or more of the following conditions are met: Within a certain time period T, the counting result of the counter exceeds the preset first power outage number threshold N1; And / or, the count results for each of multiple consecutive time periods exceed the preset second power outage threshold N2; And / or, the number of time periods in which the corresponding count results exceed the preset third power outage threshold N3 exceeds the preset number threshold, where N1, N2, and N3 are integers that are equal or unequal.

[0041] The sampling circuit includes a branch formed by a first resistor and a second resistor connected in series. One end of the branch is connected to the output terminal of the emergency-driven AC-DC converter, and the other end of the branch is grounded. The connection point of the first resistor and the second resistor is connected to the GPIO pin of the microprocessor.

[0042] In one specific embodiment, the emergency drive provided by the present invention further includes a battery management module (not shown) and an emergency conversion module, wherein the battery management module is configured to control the DC power output by the AC-DC converter to charge the emergency battery; The emergency switching module is configured to control the system when an external AC power disconnection is detected. Figure 1 When the transfer switch is closed, the discharge circuit of the emergency battery is connected to the external lighting load; when the external AC power is detected to be restored, the emergency transfer module controls the transfer switch to open, so as to disconnect the discharge circuit of the emergency battery from the external lighting load.

[0043] It should be noted that the emergency drive provided in this embodiment and the wiring error detection method provided in the above embodiment belong to the same inventive concept. The entire contents of the above wiring error detection method embodiment are incorporated into this emergency drive embodiment by reference, and will not be repeated here.

[0044] Furthermore, one embodiment of the present invention provides an emergency lighting system with wiring error detection function, including an LED driver, an emergency battery, a lighting load, and the emergency driver as described above, wherein the LED driver is configured with an AC input interface, an AC-DC converter, and a DC output interface, the AC input interface being connected to the controlled live wire and the neutral wire respectively; the DC output interface being connected to the lighting load; When the voltage of the GPIO pin of the emergency-driven microprocessor is a low or high level indicating that the charging live wire is de-energized, the switching device connects the lighting load to the discharge circuit of the emergency battery. When the voltage of the GPIO pin of the emergency-driven microprocessor is a high or low level indicating that the charging live wire is energized, the switching device disconnects the lighting load from the discharge circuit of the emergency battery. That is, this implementation does not require an additional sampling circuit to determine whether the external AC power supply has failed; instead, it makes emergency decisions based on the level signal output by the microprocessor's GPIO pin.

[0045] The emergency lighting system with wiring error detection function provided by the present invention also includes indicator lights and / or sound alarms and / or communication modules; The indicator light is configured to emit a visual signal to indicate an error when the charging wire is found to be wired incorrectly. The sound alarm is configured to emit a prompt message in the form of an audible signal when it is determined that the charging live wire is wired incorrectly. The communication module is configured to send a prompt message in the form of a communication signal to a preset terminal when it is determined that the charging wire is connected incorrectly.

[0046] The indicator lights and / or audible alarms and / or communication modules are powered by an external AC power source, such as... Figure 1 As shown, taking the indicator light as an example, it is electrically connected to the microprocessor. The indicator light is powered by an external AC power source (not shown). This indicates that the indicator light issues a prompt message related to the microprocessor determining that the charging live wire is wired incorrectly. The indicator light's operation will not be affected by the power outage caused by the incorrect charging live wire wiring.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for detecting wiring errors in an emergency lighting system, wherein the emergency lighting system is equipped with a charging live wire, a controlled live wire, and a neutral wire, the charging live wire being configured to connect to an emergency drive within the emergency lighting system, characterized in that, The method is configured to detect whether the charging wire is incorrectly wired. The emergency drive is equipped with a sampling circuit, which connects a designated detection pin of the microprocessor to the sampling output terminal of the sampling circuit, so that when the charging wire is powered on, the voltage of the designated detection pin is high or low, and when the charging wire is powered off, the voltage of the designated detection pin jumps to the opposite level. The microprocessor calculates the number of times the charging wire is de-energized by detecting the level change of the designated detection pin; The microprocessor determines whether the charging wire is wired incorrectly based on the count of the number of times the charging wire is disconnected within a certain time period or multiple time periods.

2. The method for detecting wiring errors in an emergency lighting system according to claim 1, characterized in that, The charging live wire is determined to be incorrectly wired if one or more of the following conditions are met: Within a certain time period T, the counting result of the counter exceeds the preset first power outage number threshold N1; And / or, the count results for each of multiple consecutive time periods exceed the preset second power outage threshold N2; And / or, the number of time periods in which the corresponding count results exceed the preset third power outage threshold N3 within the preset time period exceeds the preset number threshold, where N1, N2, and N3 are integers that are equal or unequal.

3. The method for detecting wiring errors in an emergency lighting system according to claim 2, characterized in that, If the counter's count exceeds a preset first power outage threshold N1 within a certain time period T, it includes: The time period T is 24 hours, and the counting result reaches 2 or 3 times or more within one time period; And / or, the time period T is 6 hours, and the count result reaches 2 times within one time period; And / or, the time period T is 12 hours, and the count result reaches 2 times within one time period; And / or, the time period T is 48 hours, and the count result reaches more than 2 times within one time period; And / or, the time period T is 168 hours, and the count result reaches more than 5 times within one time period.

4. The method for detecting wiring errors in an emergency lighting system according to claim 2, characterized in that, The following are examples of consecutive time periods where the count results exceed the preset second power outage threshold N2: The count result for each of the three consecutive time periods is more than once; And / or, the count results for each of two consecutive time periods are more than once; And / or, the count results for each of the three consecutive time periods are more than twice; And / or, the count results for each of the three consecutive time periods are more than twice.

5. The method for detecting wiring errors in an emergency lighting system according to claim 2, characterized in that, The number of time periods during which the corresponding count result exceeds the preset third power outage threshold N3 exceeds the preset number threshold includes: The preset time period is at least 3×T, and within this time period, there are two or more time periods corresponding to the counting results that are all more than once; And / or, the time period is 24 hours, the preset time period is 168 hours, and within this time period, the counting results of more than five time periods are all more than once.

6. The method for detecting wiring errors in an emergency lighting system according to claim 1, characterized in that, If it is determined that the charging wire is connected incorrectly, an indicator light will be used to emit a light signal to indicate the error, and / or an audible alarm will be used to emit an audible signal to indicate the error, and / or a communication module will be used to send a communication signal to a preset terminal to indicate the error.

7. The method for detecting wiring errors in an emergency lighting system according to claim 6, characterized in that, The indicator lights and / or sound alarms and / or communication modules are powered by an external AC power source.

8. The method for detecting wiring errors in an emergency lighting system according to any one of claims 1 to 7, characterized in that, The sampling circuit includes a branch formed by a first resistor and a second resistor connected in series. One end of the branch is connected to the output terminal of the emergency-driven AC-DC converter, and the other end of the branch is grounded. The connection point of the first resistor and the second resistor is connected to a designated detection pin of the microprocessor.

9. An emergency drive, characterized in that, The device includes an AC-DC converter, a sampling circuit, and a microprocessor. The input terminal of the AC-DC converter is connected to one end of the charging cable, and the output terminal of the AC-DC converter is connected to the sampling circuit. A designated detection pin of the microprocessor is connected to the sampling output terminal of the sampling circuit, such that when the charging cable is powered on, the voltage of the designated detection pin is high or low, and when the charging cable is powered off, the voltage of the designated detection pin switches to the opposite level. The microprocessor calculates the number of times the charging wire is de-energized by detecting the level change of the designated detection pin; The microprocessor determines whether the charging wire is wired incorrectly based on the count of the number of times the charging wire is disconnected within a certain time period or multiple time periods.

10. The emergency drive according to claim 9, characterized in that, The charging live wire is determined to be incorrectly wired if one or more of the following conditions are met: Within a certain time period T, the counting result of the counter exceeds the preset first power outage number threshold N1; And / or, the count results for each of multiple consecutive time periods exceed the preset second power outage threshold N2; And / or, the number of time periods in which the corresponding count results exceed the preset third power outage threshold N3 within the preset time period exceeds the preset number threshold, where N1, N2, and N3 are integers that are equal or unequal.

11. The emergency drive according to claim 9, characterized in that, The sampling circuit includes a branch formed by a first resistor and a second resistor connected in series. One end of the branch is connected to the output terminal of the emergency-driven AC-DC converter, and the other end of the branch is grounded. The connection point of the first resistor and the second resistor is connected to a designated detection pin of the microprocessor.

12. The emergency drive according to claim 9, characterized in that, It also includes a battery management module and an emergency conversion module, wherein the battery management module is configured to control the DC power output by the AC-DC converter to charge the emergency battery; The emergency switching module is configured to connect the discharge circuit of the emergency battery to the external lighting load when an external AC power supply is detected to be disconnected, and to disconnect the discharge circuit of the emergency battery from the external lighting load when an external AC power supply is detected to be restored.

13. An emergency lighting system with wiring error detection function, characterized in that, The system includes an LED driver, an emergency battery, a lighting load, and an emergency drive as described in any one of claims 9 to 12, wherein the LED driver is configured with an AC input interface, an AC-DC converter, and a DC output interface, the AC input interface being connected to the controlled live wire and the neutral wire respectively; and the DC output interface being connected to the lighting load. When the voltage of the designated detection pin of the emergency drive microprocessor is a low level or a high level indicating that the charging live wire is de-energized, the switching device controls the lighting load to connect to the discharge circuit of the emergency battery; when the voltage of the designated detection pin of the emergency drive microprocessor is a high level or a low level indicating that the charging live wire is energized, the switching device controls the lighting load to disconnect from the discharge circuit of the emergency battery.

14. The emergency lighting system according to claim 13, characterized in that, It also includes indicator lights and / or sound alarms and / or communication modules; The indicator light is configured to emit a visual signal to indicate an error when the charging wire is found to be wired incorrectly. The sound alarm is configured to emit a prompt message in the form of an audible signal when it is determined that the charging live wire is wired incorrectly. The communication module is configured to send a prompt message in the form of a communication signal to a preset terminal when it is determined that the charging wire is connected incorrectly.

15. The emergency lighting system according to claim 14, characterized in that, The indicator lights and / or sound alarms and / or communication modules are powered by an external AC power source.

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