WO2019080360A1 - 输出检测保护电路及hid灯用交流电子镇流器 - Google Patents

输出检测保护电路及hid灯用交流电子镇流器

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Publication number
WO2019080360A1
WO2019080360A1 PCT/CN2017/120351 CN2017120351W WO2019080360A1 WO 2019080360 A1 WO2019080360 A1 WO 2019080360A1 CN 2017120351 W CN2017120351 W CN 2017120351W WO 2019080360 A1 WO2019080360 A1 WO 2019080360A1
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Prior art keywords
output
module
protection circuit
detection
mcu chip
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PCT/CN2017/120351
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English (en)
French (fr)
Inventor
邱明
金宇星
邓冠星
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苏州纽克斯电源技术股份有限公司
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Publication of WO2019080360A1 publication Critical patent/WO2019080360A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Definitions

  • the invention relates to the technical field of electronic ballasts, in particular to an output detection protection circuit and an AC electronic ballast for HID lamps.
  • the output to the load is generally a high-frequency AC voltage, and the ignition phase outputs an ignition voltage of up to 3KV or more.
  • the voltage in the normal working phase is up to 350VAC.
  • the output line has 0.5-15.
  • the output is generally three-core, two of which are HV, LV is the output line connected to the load, and one is the PE grounding wire to facilitate the grounding of the lamp when the customer uses it.
  • the failure rate of products with extension cords is higher than that of integrated lamps.
  • the failure rate of bulbs is significantly higher than that of new bulbs.
  • the failure rate is very concentrated. Therefore, the cause of failure and the solution are presented. It must be done.
  • the first type is the insulation breakdown caused by the high output ignition voltage, which causes the plug or the lamp terminal to ignite, and the wire leakage damage to the ground causes the electronic ballast to be damaged.
  • the second type is caused by the short circuit of the output line to the ground. When the output line LV is connected to the external protective ground, the resistance RS and MOS are damaged. Another phenomenon is that the HV and LV are not insulated by any one of the output lines. Causes the difference in current between L1 and L2, L3, causing unbalanced heating damage of the internal coil.
  • the third type is the problem of the output line capacitance itself. At high frequencies, the line capacitance leaks, causing leakage and not properly igniting the bulb.
  • the fourth type is that after the output bulb is aged, a rectifying effect similar to that of a diode is generated. Because of the unidirectionality of the current, the core cannot be magnetically reset and saturated, eventually causing damage to the device.
  • the present invention proposes a further solution to the detection of the above problem.
  • the present invention is directed to an output detection protection circuit and an AC electronic ballast for an HID lamp to overcome the deficiencies in the prior art.
  • the technical solution of the present invention is:
  • An output detection protection circuit for output detection of an AC electronic ballast for an HID lamp comprising: a short circuit prevention module, an output current signal detection module, a leakage current detection module, a fault alarm module, and an MCU chip;
  • the short circuit prevention module, the output current signal detection module, and the leakage current detection module are disposed in an output circuit of the protection circuit, the short circuit prevention module is electrically connected to the output current signal detection module, and the output current signal detection module and the The leakage current detecting module is electrically connected, and the output ends of the output current signal detecting module and the leakage current detecting module are electrically connected to the MCU chip, and the fault alarm module is electrically connected to the MCU chip.
  • the short circuit prevention module includes a first capacitor connected between the ground terminal and an output line of the output circuit.
  • the output current signal detection module includes a current transformer, a first rectifier bridge, a first resistor, and a second capacitor, and an output end of the current transformer and the first rectification
  • the bridge is electrically connected, and the first resistor and the second capacitor are respectively connected across the two ends of the first rectifier bridge.
  • a signal outputted from the output current signal detection module is electrically connected to the MCU chip via a second resistor, and another signal output from the output current signal detection module is passed through A three resistor and a third capacitor are electrically connected to the MCU chip.
  • the leakage current detecting module includes a leakage current detecting transformer and a second rectifier bridge, and an output terminal of the leakage current detecting transformer is electrically connected to the second rectifier bridge.
  • the signal output from the leakage current detecting module is electrically connected to the MCU chip via the fourth resistor, the fifth resistor, and the fourth capacitor.
  • the failure alarm module includes a light emitting diode electrically connected to the MCU chip via a sixth resistor.
  • the model number of the MCU chip is PIC16F1716-I/SS.
  • the output detection protection circuit further includes a half bridge switch that is controlled to be driven by the MCU chip.
  • An AC electronic ballast for an HID lamp comprising an output detection protection circuit as described above.
  • the invention has the beneficial effects that the output detection protection circuit of the invention can realize the output monitoring of the electronic ballast, the detection of output leakage, the short circuit protection to the ground and the rectification effect protection.
  • the output detection protection circuit of the invention can realize the output monitoring of the electronic ballast, the detection of output leakage, the short circuit protection to the ground and the rectification effect protection.
  • FIG. 1 is a circuit diagram of a specific embodiment of an output detection protection circuit of the present invention.
  • the output detection protection circuit of the present invention is used for output detection of an AC electronic ballast for an HID lamp.
  • the output detection protection circuit includes: a short circuit prevention module, an output current signal detection module, and a leakage current. Detection module, fault alarm module and MCU chip.
  • the short circuit prevention module is disposed in the output circuit of the protection circuit together with the output current signal detection module and the leakage current detection module.
  • the short circuit prevention module is electrically connected to the output current signal detecting module for preventing excessive current through damage during short circuit.
  • the short circuit prevention module includes a first capacitor C1 connected between the ground end and an output line of the output circuit.
  • the first capacitor C1 is a resonant capacitor. Therefore, when a short circuit occurs, the resonant capacitor can limit the current at a safe value.
  • the short-circuit current is controlled to a safe value due to the high-frequency impedance characteristic of the series coil, and the MOS transistor is not damaged.
  • the output current signal detecting module is configured to detect a rectifying effect and a current value, and is electrically connected to the leakage current detecting module. Meanwhile, an output end of the output current signal detecting module is further electrically connected to the MCU chip U1. Specifically, the output current signal detecting module includes a current transformer L1, a first rectifier bridge BR1, a first resistor R1, and a second capacitor C2. The output end of the current transformer L1 is electrically connected to the first rectifier bridge BR1. Connected, the first resistor R1 and the second capacitor C1 are respectively connected across the two ends of the first rectifier bridge BR1.
  • the output line rate LV is connected to the negative DC- of the internal electrolytic capacitor, and the negative electrode of the input AC through the bridge rectification is connected to the electrolytic DC-, and there is a gap between the electrolytic negative electrode and the protective ground.
  • the higher voltage is a half-cycle sine wave.
  • the negative pole of the non-isolated electrolytic capacitor is “hot”. The hot hand can't touch it. When it is short-circuited to ground, it will burn the fuse and the devices in the loop.
  • the current transformer L1 detects the output current signal, and the bridge wave rectifies the positive and negative half cycles to obtain a pulse wave of twice the output frequency.
  • the amplitude of the pulse wave is compared to determine whether the current of the positive and negative half cycles is normal.
  • the frequency and phase of the zero point are calculated by the detection pin of the MCU chip U1.
  • a signal output from the output current signal detecting module is electrically connected to the MCU chip U1 via the second resistor R2. Therefore, the MCU chip U1 compares the amplitude of the pulse wave to determine whether the current of the positive and negative half cycles is normal, and calculates the frequency and the phase difference by detecting the zero point by the ZCD.
  • the other signal output from the output current signal detecting module is electrically connected to the MCU chip U1 via the third resistor R3 and the third capacitor C3.
  • the MCU chip U1 filters the third current resistor R3 and the third capacitor C3 to obtain a current effective value signal, and determines an open circuit and a short circuit of the load.
  • the leakage current detecting module is used to detect a leakage current.
  • the leakage current detecting module includes a leakage current detecting transformer L2 and a second rectifier bridge BR2, and an output end of the leakage current detecting transformer is electrically connected to the second rectifier bridge BR2, and at the same time, the leakage current detecting transformer A seventh resistor R7 is also connected across L2 and the second rectifier bridge BR2. Further, the signal output from the leakage current detecting module is electrically connected to the MCU chip U1 via the fourth resistor R4, the fifth resistor R5, and the fourth capacitor C4.
  • the leakage current detecting module when the leakage current detecting module operates, since the current flowing through the HV and the LV is an alternating current, an equilibrium state is present when there is no leakage current, and when the leakage current is generated, the leakage current detecting transformer L2 induces a current, and the current generates a voltage through the seventh resistor R7. After passing through the second rectifier bridge BR2, the voltage is connected to the fourth resistor R4, the fifth resistor R5, and the fourth capacitor C4, and then sent to the MCU chip U1 for detection.
  • the leakage current detecting transformer L2 When any one of the output lines is short-circuited to the outer casing and short-circuited to the protective grounding wire, when any one of the output wires is leaked to the ground, the leakage current detecting transformer L2 generates a detection signal, which is reasonably protected by the threshold of the MCU chip U1, and the output protection is turned off.
  • the resonant circuit is safe.
  • the fault alarm module is configured to perform flicker when a leakage fault occurs.
  • the fault alarm module includes a light emitting diode LED1 electrically connected to the MCU chip U1 via a sixth resistor R6. Therefore, when a leakage occurs, the LED indicates a blinking state, and the meaning represented by the number of flickers can be set, and the user can interpret the number of flickers to facilitate guiding the user to overhaul and prevent electric shock.
  • the MCU chip U1 has a pin connected to the short circuit prevention module, the output current signal detection module, the leakage current detection module, and the fault alarm module, so as to implement calculation of the received feedback and issue a control command to implement the circuit. protection of.
  • the model of the MCU chip is PIC16F1716-I/SS.
  • the output detection protection circuit further includes a half bridge switch that is controlled and driven by the MCU chip.
  • the present invention also provides an AC electronic ballast for an HID lamp comprising the output detection protection circuit as described above.
  • the output detection protection circuit of the present invention can realize output monitoring of the electronic ballast, detection of output leakage, short circuit protection against ground, and rectification effect protection. By detecting the current phase and amplitude, it is judged that the load rectification effect occurs, and the protection is realized when the output of the bulb is asymmetrical and positively caused by the one-way conduction, and the protection of the output line is protected by the leakage current detection loop, thereby realizing reliable protection of the product and reducing A safety accident caused by electric leakage.

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  • Emergency Protection Circuit Devices (AREA)

Abstract

本发明提供一种输出检测保护电路，其包括：防短路模块、输出电流信号检测模块、漏电流检测模块、故障报警模块以及MCU芯片。本发明的输出检测保护电路能够实现电子镇流器的输出监控、检测输出漏电、对地短路保护以及整流效应保护。通过检测电流相位和幅值，判断负载整流效应发生，当灯泡出现单向导通导致的输出正负半周不对称时实现保护，通过漏电流检测回路实现输出线路异常的保护，实现产品可靠保护，减少漏电引起的安全事故。

Description

输出检测保护电路及HID灯用交流电子镇流器 技术领域
本发明涉及电子镇流器技术领域，尤其涉及一种输出检测保护电路及HID灯用交流电子镇流器。
背景技术
因HID灯的负载的特殊性，输出到负载的一般为高频交流电压，点火阶段输出高达3KV以上的点火电压，正常工作阶段电压最高到350VAC，根据使用环境不一样，输出线有0.5-15米不等，输出一般为三芯线，其中两根HV，LV为输出线接负载，一根为PE接地线方便客户使用时灯具接地。
经长期的使用跟踪发现，带延长线的产品故障率比一体式灯具高，灯泡老化后故障率较新灯泡明显提高，此类的故障率现象非常集中，因此分析失效原因和提出解决方案势在必行。
根据上述情况分析，第一类为输出点火电压较高造成绝缘击穿，导致插头或灯具端子打火，线皮破损对地漏电导致电子镇流器损坏。第二类是输出线对地短路引起，当输出线LV的与外部的保护接地导通时损坏电阻RS和MOS，另一种现象HV和LV任意一根输出线绝缘不好对地漏电时，造成L1和L2、L3的电流差异，引起内部线圈不平衡发热损坏。第三类是输出线电容本身的问题，在高频下线间电容有漏电，导致漏电而不能正常点燃灯泡。第四类为输出灯泡老化后，产生像二极管类似的整流效应，因为其电流的单向性，导致磁芯不能磁复位而饱和，最终导致器件损坏。
因此，针对上述故障问题进行的检测，本发明提出进一步的解决方案。
发明概述
技术问题
问题的解决方案
技术解决方案
本发明旨在提供一种输出检测保护电路及HID灯用交流电子镇流器，以克服现 有技术中存在的不足。
为解决上述技术问题，本发明的技术方案是：
一种输出检测保护电路，其用于HID灯用交流电子镇流器的输出检测，所述输出检测保护电路包括：防短路模块、输出电流信号检测模块、漏电流检测模块、故障报警模块以及MCU芯片；
所述防短路模块、输出电流信号检测模块、漏电流检测模块设置于保护电路的输出回路中，所述防短路模块与所述输出电流信号检测模块电连接，所述输出电流信号检测模块与所述漏电流检测模块电连接，所述输出电流信号检测模块和漏电流检测模块的输出端分别与所述MCU芯片电连接，所述故障报警模块与所述MCU芯片电连接。
作为本发明的输出检测保护电路的改进，所述防短路模块包括第一电容，所述第一电容连接于接地端和输出回路的输出线之间。
作为本发明的输出检测保护电路的改进，所述输出电流信号检测模块包括电流互感器、第一整流桥、第一电阻、第二电容，所述电流互感器的输出端与所述第一整流桥电连接，所述第一电阻和第二电容分别跨接于所述第一整流桥的两端。
作为本发明的输出检测保护电路的改进，自所述输出电流信号检测模块输出的一路信号经第二电阻与所述MCU芯片电连接，自所述输出电流信号检测模块输出的另一路信号经第三电阻和第三电容与所述MCU芯片电连接。
作为本发明的输出检测保护电路的改进，所述漏电流检测模块包括漏电流检测变压器和第二整流桥，所述漏电流检测变压器的输出端与所述第二整流桥电连接。
作为本发明的输出检测保护电路的改进，自所述漏电流检测模块输出的信号经第四电阻、第五电阻以及第四电容与所述MCU芯片电连接。
作为本发明的输出检测保护电路的改进，所述故障报警模块包括发光二极管，所述发光二极管经第六电阻与所述MCU芯片电连接。
作为本发明的输出检测保护电路的改进，所述MCU芯片的型号为PIC16F1716-I/SS。
作为本发明的输出检测保护电路的改进，所述输出检测保护电路还包括半桥开关，所述半桥开关由所述MCU芯片进行控制驱动。
为解决上述技术问题，本发明的另一技术方案是：
一种HID灯用交流电子镇流器，其包括如上所述的输出检测保护电路。
发明的有益效果
有益效果
与现有技术相比，本发明的有益效果是：本发明的输出检测保护电路能够实现电子镇流器的输出监控、检测输出漏电、对地短路保护以及整流效应保护。通过检测电流相位和幅值，判断负载整流效应发生，当灯泡出现单向导通导致的输出正负半周不对称时实现保护，通过漏电流检测回路实现输出线路异常的保护，实现产品可靠保护，减少漏电引起的安全事故。
对附图的简要说明
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的输出检测保护电路一具体实施方式的电路图。
实施该发明的最佳实施例
本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
如图1所示，本发明的输出检测保护电路用于HID灯用交流电子镇流器的输出检测，具体地，所述输出检测保护电路包括：防短路模块、输出电流信号检测模块、漏电流检测模块、故障报警模块以及MCU芯片。
所述防短路模块与所述输出电流信号检测模块和漏电流检测模块一同设置于保护电路的输出回路中。其中，所述防短路模块与所述输出电流信号检测模块电连接，其用于防止短路时电流过大直通损坏。具体地，所述防短路模块包括第一电容C1，所述第一电容C1连接于接地端和输出回路的输出线之间。优选地，所述第一电容C1为谐振电容。从而，当短路发生时，谐振电容可限制电流在安全值，在HV线对地短路时因串联线圈的高频阻抗特性，其短路电流被控制在安全值，不会损坏MOS管。
所述输出电流信号检测模块用于检测整流效应和电流值，其与所述漏电流检测模块电连接，同时，所述输出电流信号检测模块的输出端还与所述MCU芯片U1电连接。具体地，所述输出电流信号检测模块包括电流互感器L1、第一整流桥BR1、第一电阻R1、第二电容C2，所述电流互感器L1的输出端与所述第一整流桥BR1电连接，所述第一电阻R1和第二电容C1分别跨接于所述第一整流桥BR1的两端。
由于电子镇流器使用的都是非隔离的结构，输出线率LV与内部电解电容的负极DC-连接，输入交流通过桥堆整流后的负极与电解DC-相连，电解负极与保护地线间有较高的电压，为半个周期的正弦波，其中非隔离的电解电容的负极为“热地”，热地人手不能触摸，对地短路时会烧毁保险和回路中的器件。
因此，基于上述电子镇流器的特性，所述输出电流信号检测模块工作时，电流互感器L1检测输出的电流信号，正负半周通过桥式整流后得到2倍的输出频率的脉动波，通过脉动波的幅值进行对比判断正负半周的电流是否正常，通过MCU芯片U1的检测脚检测零点计算频率和相位，当负载出现异常时，相位发生变化，MCU芯片U1设置判断工作条件，有效的检测负载异常。
为了实现判断正负半周的电流是否正常，自所述输出电流信号检测模块输出的一路信号经第二电阻R2与所述MCU芯片U1电连接。从而，所述MCU芯片U1通过脉动波的幅值进行对比判断正负半周的电流是否正常，通过ZCD检测零点计算频率和相位差。为了实现判断判断负载的开路、短路，自所述输出电流信号检测模块输出的另一路信号经第三电阻R3和第三电容C3与所述MCU芯片U1电连接。所述MCU芯片U1对经过第三电阻R3和第三电容C3滤波得到电流有效值信号 ，判断负载的开路和短路。
所述漏电流检测模块用于用于检测漏电流。具体地，所述漏电流检测模块包括漏电流检测变压器L2和第二整流桥BR2，所述漏电流检测变压器的输出端与所述第二整流桥BR2电连接，同时，所述漏电流检测变压器L2和第二整流桥BR2之间还跨接有第七电阻R7。进一步地，自所述漏电流检测模块输出的信号经第四电阻R4、第五电阻R5以及第四电容C4与所述MCU芯片U1电连接。
从而，漏电流检测模块工作时，由于流过HV、LV的电流为交流，在没有漏电时呈现平衡状态，当漏电流产生时漏电流检测变压器L2感应出电流，电流通过第七电阻R7产生电压，电压经第二整流桥BR2后，连接第四电阻R4、第五电阻R5以及第四电容C4分压后送入MCU芯片U1检测。当任意一根输出线对外壳短路，对保护接地线短路，任意一根输出线对地漏电时，漏电流检测变压器L2会产生检测信号，通过MCU芯片U1的阈值进行合理的保护，关闭输出保护谐振回路安全。
所述故障报警模块用于在发生漏电故障时进行闪烁。具体地，所述故障报警模块包括发光二极管LED1，所述发光二极管LED1经第六电阻R6与所述MCU芯片U1电连接。从而，当发生漏电时，发光二极管指示为闪烁状态，可设定闪烁的次数所代表的含义，用户可以对闪烁的次数进行解读，以方便指导用户检修，防止触电。
所述MCU芯片U1具有与所述防短路模块、输出电流信号检测模块、漏电流检测模块、故障报警模块相连接的引脚，以实现对接收的反馈进行进行计算，并发出控制指令，实现电路的保护。优选地，所述MCU芯片的型号为PIC16F1716-I/SS。此外，所述输出检测保护电路还包括半桥开关，所述半桥开关由所述MCU芯片进行控制驱动。
基于如上所述的输出检测保护电路，本发明还提供一种HID灯用交流电子镇流器，其包括如上所述的输出检测保护电路。
综上所述，本发明的输出检测保护电路能够实现电子镇流器的输出监控、检测输出漏电、对地短路保护以及整流效应保护。通过检测电流相位和幅值，判断负载整流效应发生，当灯泡出现单向导通导致的输出正负半周不对称时实现保 护，通过漏电流检测回路实现输出线路异常的保护，实现产品可靠保护，减少漏电引起的安全事故。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (10)

  1. 一种输出检测保护电路，其用于HID灯用交流电子镇流器的输出检测，其特征在于，所述输出检测保护电路包括：防短路模块、输出电流信号检测模块、漏电流检测模块、故障报警模块以及MCU芯片；
    所述防短路模块、输出电流信号检测模块、漏电流检测模块设置于保护电路的输出回路中，所述防短路模块与所述输出电流信号检测模块电连接，所述输出电流信号检测模块与所述漏电流检测模块电连接，所述输出电流信号检测模块和漏电流检测模块的输出端分别与所述MCU芯片电连接，所述故障报警模块与所述MCU芯片电连接。
  2. 根据权利要求1所述的输出检测保护电路，其特征在于，所述防短路模块包括第一电容，所述第一电容连接于接地端和输出回路的输出线之间。
  3. 根据权利要求1所述的输出检测保护电路，其特征在于，所述输出电流信号检测模块包括电流互感器、第一整流桥、第一电阻、第二电容，所述电流互感器的输出端与所述第一整流桥电连接，所述第一电阻和第二电容分别跨接于所述第一整流桥的两端。
  4. 根据权利要求1或3所述的输出检测保护电路，其特征在于，自所述输出电流信号检测模块输出的一路信号经第二电阻与所述MCU芯片电连接，自所述输出电流信号检测模块输出的另一路信号经第三电阻和第三电容与所述MCU芯片电连接。
  5. 根据权利要求1所述的输出检测保护电路，其特征在于，所述漏电流检测模块包括漏电流检测变压器和第二整流桥，所述漏电流检测变压器的输出端与所述第二整流桥电连接。
  6. 根据权利要求1或5所述的输出检测保护电路，其特征在于，自所述漏电流检测模块输出的信号经第四电阻、第五电阻以及第四电容与所述MCU芯片电连接。
  7. 根据权利要求1所述的输出检测保护电路，其特征在于，所述故障报警模块包括发光二极管，所述发光二极管经第六电阻与所述MCU芯片电连接。
  8. 根据权利要求1所述的输出检测保护电路，其特征在于，所述MCU芯片的型号为PIC16F1716-I/SS。
  9. 根据权利要求1所述的输出检测保护电路，其特征在于，所述输出检测保护电路还包括半桥开关，所述半桥开关由所述MCU芯片进行控制驱动。
  10. 一种HID灯用交流电子镇流器，其特征在于，所述HID灯用交流电子镇流器包括如权利要求1-9任一项所述的输出检测保护电路。
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