WO2018188109A1 - 一种可切换输出电子镇流器 - Google Patents
一种可切换输出电子镇流器 Download PDFInfo
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- WO2018188109A1 WO2018188109A1 PCT/CN2017/081342 CN2017081342W WO2018188109A1 WO 2018188109 A1 WO2018188109 A1 WO 2018188109A1 CN 2017081342 W CN2017081342 W CN 2017081342W WO 2018188109 A1 WO2018188109 A1 WO 2018188109A1
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- resistor
- relay
- transistor
- circuit
- main controller
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000009977 dual effect Effects 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Classifications
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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
- H05B41/282—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
Definitions
- the present invention relates to electronic ballasts, and more particularly to a switchable output electronic ballast.
- Electronic ballasts are widely used in the field of lighting. They have the advantages of good energy-saving performance, stable illumination, dimming, etc., and are popular among all walks of life, especially in indoor planting, and are widely used.
- many growers will use the plant fill light to fill the plants according to the growth habits of the plants, thereby increasing the production yield of the plants.
- electronic ballasts are generally used as the power source.
- Existing electronic ballasts can only be connected to one light source. When such a large area is filled, a large number of electronic ballasts are required, and the production cost is high.
- the growth habits of plant production include photosynthesis and dormancy.
- the light supplementation is beneficial to the growth of the plants; when the plants are in the dormant stage, there is no need to fill the light, and the electronic ballast needs to be closed, a large number of Electronic ballasts will be idle and not working, resulting in wasted resources.
- the technical problem to be solved by the present invention is to provide a switchable output electronic ballast for connecting different light sources by shunting, and solving the inconvenience that the existing electronic ballast can only be shunted by converting boxes.
- a switchable output electronic ballast comprising:
- ballast module for converting utility power into high frequency alternating current, comprising a sequentially connected filter circuit, an AC-DC conversion circuit, a power factor correction circuit, and a full bridge inverter circuit;
- a main controller connected to the full bridge inverter circuit for driving the full bridge inverter circuit
- a pair of output switching circuits comprising a first branch and a second branch, wherein the first branch and the second branch are respectively provided with a relay K1 and a relay K2, wherein a coil end of the relay K1 is connected to the main controller,
- the switch end of the relay K1 is connected to the full bridge inverter circuit through the light source L1;
- the coil end of the relay K2 is connected to the main controller, and the switch end of the relay K2 is connected to the full bridge inverter circuit through the light source L2;
- the relay K1 When the main controller outputs a high level, the relay K1 operates to close the switch of the pull-in switch end, and the full-bridge inverter circuit is turned on.
- the full-bridge inverter circuit is open-circuited with the light source L1, the light source L1 is not lit, and the relay K2 is operated to close the switch of the pull-in switch end, the full-bridge inverter circuit turns on the light source L2, and the light source L2 is illuminated;
- An auxiliary power supply is respectively connected to the main controller and the dual output switching circuit for providing power.
- the first branch further includes a transistor Q1, a diode D1, a resistor R1, and a resistor R2.
- the base of the transistor Q1 is connected to the main controller through a resistor R1, and the base of the transistor Q1 passes through the resistor R2 and the transistor.
- the emitter of Q1 is connected, the emitter of transistor Q1 is grounded, the collector of transistor Q1 is connected to the auxiliary power supply through the coil end of the relay K1, and the diode D1 is connected in parallel to the coil end of the relay K1 to protect the circuit.
- the second branch further includes a transistor Q2, a transistor Q3, a diode D2, a resistor R3, a resistor R4, a resistor R5, and a resistor R6.
- the base of the transistor Q2 is connected to the main controller through a resistor R3, and the transistor The base of Q2 is connected to the emitter of transistor Q2 through resistor R4, the emitter of transistor Q2 is grounded, the collector of transistor Q2 is connected to the auxiliary power supply via resistor R5, and the collector of transistor Q2 is connected to the base of transistor Q3.
- the base of the transistor Q3 is connected to the emitter of the transistor Q3 through the resistor R6, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to the auxiliary power source through the coil end of the relay K2, and the diode D2 is connected in parallel The coil end of relay K2 protects the circuit.
- the full-bridge inverter circuit is further connected to a high-voltage detecting circuit, and the high-voltage detecting circuit is connected to the main controller, and the output voltage of the full-bridge inverter circuit is detected by the main controller.
- the high voltage detection circuit includes a capacitor C1, a capacitor C2, a capacitor C3, a diode D3, a resistor R7, a resistor R8, and a resistor R9.
- One end of the capacitor C1 is connected to the live line of the full bridge inverter circuit, and the capacitor C1 is another.
- One end is connected to the main controller through the resistor R7 and the anode of the diode D3 in sequence, the resistor R7 is also grounded through the resistor R8, the resistor R9 is connected in parallel across the resistor R8, one end of the capacitor C2 is connected to the cathode of the diode D3, and the capacitor C2 is The other end is grounded, and capacitor C3 is connected in parallel across capacitor C2.
- the main controller is further connected to a communication module, and the communication module is configured to receive control information sent by the user terminal and transmit the control information to the main controller, where the communication module is connected to the user terminal by wire or wirelessly.
- main controller is further connected to a display module, and the display module is controlled by the main controller to display an abnormal condition of the circuit.
- the display module is a liquid crystal display.
- the beneficial technical effect of the present invention is that the switchable output electronic ballast is controlled by the main controller to control the dual output switching circuit switching relay K1 or the relay K2 to make the full bridge inverter circuit be connected to different light sources, thereby solving the problem.
- the existing electronic ballast needs to cooperate with a conversion box to realize the trouble of splitting and lighting different light sources.
- the switchable output electronic ballast has a simple structure, and can intelligently control the connection between different light sources and the electronic ballast through the main controller, without using the conversion box, and is convenient to use, and meets the needs of the user.
- FIG. 1 is a block diagram showing the structure of an embodiment of the present invention.
- FIG. 2 is a partial circuit connection diagram of an embodiment of the present invention.
- the switchable output electronic ballast includes a ballast module 1 for converting the commercial power into high frequency alternating current, which includes the sequentially connected filter circuit 11, AC-DC conversion.
- the full bridge inverter circuit 14 is connected; the coil end of the relay K2 is connected to the main controller 2, and the switch end of the relay K2 is connected to the full bridge inverter circuit 14 through the light source L2; during operation, the relay K1 and the relay K2 are controlled by the main control The device 2 alternately works.
- the relay K1 When the main controller 2 outputs a high level, the relay K1 operates to close the switch of the pull-in switch end, the full-bridge inverter circuit 14 turns on the light source L1, the light source L1 is illuminated, and the relay K2 does not work, all Bridge inverter circuit 14 and light source L2 open circuit Connected, the light source L2 is not bright; when the main controller 2 outputs a low level, the relay K1 does not work, the full-bridge inverter circuit is open-circuited with the light source L1, the light source L1 is not lit, and the relay K2 works to close the switch of the pull-in switch end
- the full-bridge inverter circuit turns on the light source L2, and the light source L2 is illuminated; and an auxiliary power source 4, which is respectively connected to the main controller 2 and the dual output switching circuit 3, for supplying power.
- the filter circuit 11 in the ballast module 1 adopts an EMC filter circuit, and the input end thereof is connected with the mains, which can filter the conducted radio frequency interference and electromagnetic interference in the utility power grid, and hinder the ballast circuit.
- the generated conductive radio frequency and electromagnetic interference enter the power grid;
- the AC-DC conversion circuit 12 converts the input alternating current into direct current;
- the power factor correction circuit 13 uses the APFC circuit to improve the total harmonic content of the power incoming line current and the circuit power factor. High and low; the full bridge inverter circuit 14 completes the conversion of the DC high voltage to the high frequency alternating current to turn on the light source.
- the auxiliary power source 4 is generally built in the electronic ballast, and converts the commercial power into direct current to satisfy the operation of the main controller 2 and the dual output switching circuit 3.
- the first branch further includes a transistor Q1, a diode D1, a resistor R1, and a resistor R2.
- the base of the transistor Q1 is connected to the main controller through a resistor R1, and the transistor Q1 is The base is connected to the emitter of the transistor Q1 through the resistor R2, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the auxiliary power source through the coil end of the relay K1, and the diode D1 is connected in parallel to the coil of the relay K1. End to protect the circuit.
- the second branch further includes a transistor Q2, a transistor Q3, a diode D2, a resistor R3, a resistor R4, a resistor R5, and a resistor R6.
- the base of the transistor Q2 is connected to the main controller through a resistor R3, and the base of the transistor Q2 passes through
- the resistor R4 is connected to the emitter of the transistor Q2, the emitter of the transistor Q2 is grounded, the collector of the transistor Q2 is connected to the auxiliary power source through the resistor R5, and the collector of the transistor Q2 is connected to the base of the transistor Q3, and the base of the transistor Q3 is connected.
- the pole is connected to the emitter of the transistor Q3 through the resistor R6, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to the auxiliary power source through the coil end of the relay K2, and the diode D2 is connected in parallel at the coil end of the relay K2.
- the main controller 2 outputs different control signals to the dual output switching circuit 3, and the dual output switching circuit 3 switches the relay K1 or the relay K2 according to the control signal, specifically, when the main controller 2 is switched to the dual output switching circuit.
- the full-bridge inverter circuit 14 is connected to a high-voltage detecting circuit 5, which is connected to the main controller 2, and detects the output voltage of the full-bridge inverter circuit 14 through the main controller 2.
- the high voltage detecting circuit 5 includes a capacitor C1, a capacitor C2, a capacitor C3, a diode D3, a resistor R7, a resistor R8, and a resistor R9.
- One end of the capacitor C1 is connected to a live line of the full bridge inverter circuit, and the capacitor C1 is connected. The other end is connected to the main controller through the resistor R7 and the anode of the diode D3. The resistor R7 is also grounded through the resistor R8. The resistor R9 is connected in parallel across the resistor R8.
- One end of the capacitor C2 is connected to the cathode of the diode D3. The other end of C2 is grounded, and capacitor C3 is connected in parallel across capacitor C2.
- the output voltage of the full-bridge inverter circuit 14 is firstly blocked by the capacitor C1 and the resistor R7, and then divided by the resistor R8 and the resistor R9, and then filtered by the capacitor C2 and the capacitor C3, and then input to the main control.
- the main controller 2 calculates the output voltage of the full-bridge inverter circuit 14, and when the output voltage reaches the maximum withstand voltage limit of the relay in the dual-output switching circuit 3, the main controller 2 controls the full-bridge inverse
- the variable circuit 14 turns off the output, thereby protecting the dual output switching circuit 3.
- the main controller 2 is also connected to a communication module 6 for receiving control information sent by the user terminal 7 and transmitting it to the main controller 2, which is connected to the user terminal 7 by wire or wirelessly.
- the user terminal 7 includes a desktop computer, a mobile phone, an IPAD, etc., in use, the user sends relevant control information to the communication module 6 through the user terminal 7, and the communication module 6 receives the control information and transmits the control information to the main controller 2, the main controller 2
- the dual output switching circuit 3 is controlled based on the control information so that the relay K1 or the relay K2 is selectively operated, so that the full-bridge inverter circuit 14 is switched on and turned on with different light sources. In actual use, the illumination range, illumination time, illumination intensity, etc.
- the light source L1 in the planting house 1 can be set according to requirements, such as controlling the light source L1 in the planting house 1 to light up, the light source L2 to be extinguished, etc., or controlling the light source L1 to work for 23 hours, the light source L2 to work for 1 hour, etc., or The output power of the light source L1 and the light source L2 is controlled.
- the main controller 2 is also connected to a display module 8, which is controlled by the main controller 2 to display an abnormal condition of the circuit.
- the main controller 2 can detect the input voltage of the mains, the output voltage of the full-bridge inverter circuit 14, the input current of the light source L1 or the light source L2, the temperature of the electronic ballast, etc., which are easy to cause the circuit work.
- the affected data when the data is abnormal, the main controller 2 transmits the detection result to the display module 8 for display, thereby reminding the user to timely repair the circuit and ensure the circuit safety.
- the display module 8 adopts a liquid crystal display, and the display effect is good.
- a circuit abnormality alarm device can also be set according to actual needs, so as to better remind the user.
- the switchable output electronic ballast controls the dual output switching circuit 3 to switch the relay K1 or the relay K2 to operate by the main controller 2, so that the full bridge inverter circuit 14 is switched on and connected to different light sources to solve the problem.
- the existing electronic ballast needs to be equipped with a conversion box to realize the inconvenience of splitting and lighting different light sources; in addition, the switchable output electronic ballast is also provided with a high voltage detecting circuit 5, which can effectively protect the dual output switching circuit 3 In the relay, the double output switching circuit 3 is prevented from being damaged; at the same time, the switchable output electronic ballast is further provided with a display module 8, through which the abnormality of the circuit can be clearly understood, and the circuit can be repaired in time if an abnormality is found.
- the switchable output electronic ballast has a simple structure, and the intelligent control output can be connected to different light sources without the need of a conversion box, which is convenient to use and meets the user's desire to intelligently control different light sources, and can be widely applied to large-scale applications. Planting, farming or a wide range of circuit light source control areas.
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Abstract
本发明公开了一种可切换输出电子镇流器，包括一镇流模块，用以将市电转化为高频交流电，其包括顺次连接的滤波电路、AC-DC转换电路、功率因子校正电路和全桥逆变电路；一主控制器，与所述全桥逆变电路连接，用以驱动所述全桥逆变电路；一双输出切换电路，包括第一支路和第二支路，该第一支路和第二支路上分别设有继电器K1和继电器K2，其中，继电器K1的线圈端与所述主控制器连接，继电器K1的开关端通过光源L1与所述全桥逆变电路连接；继电器K2的线圈端与所述主控制器连接，继电器K2的开关端通过光源L2与所述全桥逆变电路连接。该可切换输出电子镇流器结构简单，可智能控制电子镇流器与不同光源连接，无需配合转换盒子使用，使用方便。
Description
技术领域
本发明涉及电子镇流器，尤其涉及一种可切换输出电子镇流器。
背景技术
电子镇流器广泛用于照明领域，其具有节能性能好、发光稳定、可调光等优点，颇受各行各业的欢迎，尤其在室内种植上，更是应用广泛。众多种植户在生产种植过程中会根据植物的生长习性，通过植物补光灯对植物进行适量补光，由此提高植物的生产产量，植物补光灯使用时一般采用电子镇流器做为电源，现有电子镇流器一般只能接一个光源，如此大面积补光时需要配备大量的电子镇流器，生产成本高。且植物生产生长习性包括有光合作用和休眠阶段，植物处于光合作用阶段时，进行补光有利于植物的生长；而当植物处于休眠阶段时不需要补光，需关闭电子镇流器，大量的电子镇流器将闲置不工作，造成资源浪费。目前市场上流行采用转接盒子把一个电子镇流器分流到两个种植房，让两个种植房的植物交替生长，有效地降低了电子镇流器的采购成本，但需要额外采购转换盒子，并不经济；另外转换盒子使用时需实时监控，一旦操作有误将对植物的生长造成严重的影响；同时转换盒子的切换是在镇流器通电过程中进行，属于带电操作，对电子镇流器及转换盒子都存在着损坏的风险。
鉴于此，需要设计一种可分流连接不同光源、使用方便的电子镇流器，解决现有电子镇流器只能通过转换盒子进行分流的不便。
发明内容
本发明所要解决的技术问题在于提供一种可切换输出电子镇流器，以分流连接不同光源，解决现有电子镇流器只能通过转换盒子进行分流的不便。
为了解决上述技术问题，本发明公开了如下技术方案：一种可切换输出电子镇流器，包括：
一镇流模块，用以将市电转化为高频交流电，其包括顺次连接的滤波电路、AC-DC转换电路、功率因子校正电路和全桥逆变电路；
一主控制器，与所述全桥逆变电路连接，用以驱动所述全桥逆变电路；
一双输出切换电路，包括第一支路和第二支路，该第一支路和第二支路上分别设有继电器K1和继电器K2，其中，继电器K1的线圈端与所述主控制器连接，继电器K1的开关端通过光源L1与所述全桥逆变电路连接；继电器K2的线圈端与所述主控制器连接，继电器K2的开关端通过光源L2与所述全桥逆变电路连接；工作时，继电器K1和继电器K2受控于所述主控制器而交替工作，当所述主控制器输出高电平时，继电器K1工作以吸合开关端的开关闭合，所述全桥逆变电路接通光源L1，光源L1被点亮，而继电器K2不工作，所述全桥逆变电路与光源L2开路连接，光源L2不亮；当所述主控制器输出低电平时，继电器K1不工作，所述全桥逆变电路与光源L1开路连接，光源L1不亮，而继电器K2工作以吸合开关端的开关闭合，所述全桥逆变电路接通光源L2，光源L2被点亮；
一辅助电源，其分别与主控制器及双输出切换电路连接，用以提供电源。
进一步地，所述第一支路还包括三极管Q1、二极管D1、电阻R1、电阻R2，三极管Q1的基极通过电阻R1与所述主控制器连接，且三极管Q1的基极通过电阻R2与三极管Q1的发射极连接，三极管Q1的发射极接地，三极管Q1的集电极通过所述继电器K1的线圈端与所述辅助电源连接，二极管D1并联在所述继电器K1的线圈端以保护电路。
进一步地，所述第二支路还包括三极管Q2、三极管Q3、二极管D2、电阻R3、电阻R4、电阻R5和电阻R6，三极管Q2的基极通过电阻R3与所述主控制器连接，且三极管Q2的基极通过电阻R4与三极管Q2的发射极连接，三极管Q2的发射极接地，三极管Q2的集电极通过电阻R5与所述辅助电源连接，且三极管Q2的集电极与三极管Q3的基极连接，三极管Q3的基极通过电阻R6与三极管Q3的发射极连接，三极管Q3的发射极接地，三极管Q3的集电极通过所述继电器K2的线圈端与所述辅助电源连接，二极管D2并联在所述继电器K2的线圈端以保护电路。
进一步地，所述全桥逆变电路还连接一高压检测电路，该高压检测电路与所述主控制器连接，通过所述主控制器检测所述全桥逆变电路的输出电压。
进一步地，所述高压检测电路包括电容C1、电容C2、电容C3、二极管D3、电阻R7、电阻R8和电阻R9，电容C1的一端与所述全桥逆变电路的火线连接，电容C1的另一端依次通过电阻R7、二极管D3的正极与所述主控制器连接，电阻R7还通过电阻R8接地，电阻R9并联连接在电阻R8两端，电容C2的一端与二极管D3的负极连接，电容C2的另一端接地，电容C3并联在电容C2的两端。
进一步地，所述主控制器还连接一通信模块，该通信模块用以接收用户终端发出的控制信息并传输给所述主控制器，该通信模块与用户终端通过有线或者无线连接。
进一步地，所述主控制器还连接一显示模块，该显示模块受控于所述主控制器以显示电路的异常情况。
进一步地，所述显示模块为一液晶显示屏。
本发明的有益技术效果是：该可切换输出电子镇流器通过主控制器控制双输出切换电路切换继电器K1或继电器K2择一工作，以使全桥逆变电路与不同光源接通，解决了现有电子镇流器需要配合一转换盒子才能实现分流点亮不同光源的麻烦。该可切换输出电子镇流器的结构简单，可通过主控制器智能地控制不同光源与电子镇流器的连接，无需配合转换盒子使用，使用方便，满足了用户的需求。
附图说明
图1是本发明一实施例的结构框图；
图2是本发明一实施例的部分电路连接图。
具体实施方式
为了更充分理解本发明的技术内容，下面结合示意图对本发明的技术方案进一步介绍和说明，但不局限于此。
如图1所示，在本发明中，可切换输出电子镇流器包括一镇流模块1，用以将市电转化为高频交流电，其包括顺次连接的滤波电路11、AC-DC转换电路12、功率因子校正电路13和全桥逆变电路14；一主控制器2，与全桥逆变电路14连接，用以驱动全桥逆变电路14；一双输出切换电路3，包括第一支路和第二支路，该第一支路和第二支路上分别设有继电器K1和继电器K2，其中，继电器K1的线圈端与主控制器2连接，继电器K1的开关端通过光源L1与全桥逆变电路14连接；继电器K2的线圈端与主控制器2连接，继电器K2的开关端通过光源L2与全桥逆变电路14连接；工作时，继电器K1和继电器K2受控于主控制器2而交替工作，当主控制器2输出高电平时，继电器K1工作以吸合开关端的开关闭合，全桥逆变电路14接通光源L1，光源L1被点亮，而继电器K2不工作，全桥逆变电路14与光源L2开路连接，光源L2不亮；当主控制器2输出低电平时，继电器K1不工作，所述全桥逆变电路与光源L1开路连接，光源L1不亮，而继电器K2工作以吸合开关端的开关闭合，所述全桥逆变电路接通光源L2，光源L2被点亮；一辅助电源4，其分别与主控制器2及双输出切换电路3连接，用以提供电源。在本实施例中，镇流模块1中的滤波电路11采用EMC滤波电路，其输入端与市电连接，可将市电电网中的传导射频干扰和电磁干扰滤除，同时阻碍镇流器电路所产生的传导射频及电磁干扰进入电网；AC-DC转换电路12将输入交流电变换成直流电；功率因子校正电路13采用APFC电路，用于改善电源进线电流的总谐波含量及电路功率因数的高低；全桥逆变电路14完成直流高压向高频交流的变换以开启光源。辅助电源4一般内置于电子镇流器中，将市电转化为直流电以满足主控制器2及双输出切换电路3工作使用。
在本实施例中，如图2所示，第一支路还包括三极管Q1、二极管D1、电阻R1、电阻R2，三极管Q1的基极通过电阻R1与所述主控制器连接，且三极管Q1的基极通过电阻R2与三极管Q1的发射极连接，三极管Q1的发射极接地，三极管Q1的集电极通过所述继电器K1的线圈端与所述辅助电源连接，二极管D1并联在所述继电器K1的线圈端以保护电路。第二支路还包括三极管Q2、三极管Q3、二极管D2、电阻R3、电阻R4、电阻R5和电阻R6，三极管Q2的基极通过电阻R3与所述主控制器连接，且三极管Q2的基极通过电阻R4与三极管Q2的发射极连接，三极管Q2的发射极接地，三极管Q2的集电极通过电阻R5与所述辅助电源连接，且三极管Q2的集电极与三极管Q3的基极连接，三极管Q3的基极通过电阻R6与三极管Q3的发射极连接，三极管Q3的发射极接地，三极管Q3的集电极通过所述继电器K2的线圈端与所述辅助电源连接，二极管D2并联在所述继电器K2的线圈端以保护电路。工作时，主控制器2向双输出切换电路3输出不同的控制信号，双输出切换电路3根据该控制信号切换继电器K1或继电器K2择一工作，具体地，当主控制器2向双输出切换电路3输出高电平时，三极管Q1和三极管Q2导通，三极管Q3截止，继电器K1工作以吸合开关端的开关闭合，全桥逆变电路14接通光源L1，光源L1被点亮，而继电器K2不工作，全桥逆变电路与光源L2开路连接，光源L2不亮；当主控制器2向双输出切换电路3输出低电平时，三极管Q1和三极管Q2截止，三极管Q3导通，继电器K2工作以吸合开关端的开关闭合，全桥逆变电路14接通光源L2，光源L2被点亮，而继电器K1不工作，全桥逆变电路与光源L1开路连接，光源L1不亮。由此，在主控制器2的控制下可自由切换全桥逆变电路14接通光源L1或者光源L2，实现点亮不同光源的目的。
另外，由于启动光源需要高压击穿，双输出切换电路3中的继电器耐压能力有限，该全桥逆变电路14输出的高压很有可能不受控制而烧穿继电器。为了安全起见，本实施例中，全桥逆变电路14连接有一高压检测电路5，该高压检测电路5与主控制器2连接，通过主控制器2检测全桥逆变电路14的输出电压。如图2所示，高压检测电路5括电容C1、电容C2、电容C3、二极管D3、电阻R7、电阻R8和电阻R9，电容C1的一端与所述全桥逆变电路的火线连接，电容C1的另一端依次通过电阻R7、二极管D3的正极与所述主控制器连接，电阻R7还通过电阻R8接地，电阻R9并联连接在电阻R8两端，电容C2的一端与二极管D3的负极连接，电容C2的另一端接地，电容C3并联在电容C2的两端。高压检测时，全桥逆变电路14的输出电压首先通过电容C1和电阻R7进行阻容降压，然后经电阻R8和电阻R9进行分压，再通过电容C2和电容C3滤波后输入到主控制器2，通过主控制器2计算出全桥逆变电路14的输出电压，当该输出电压达到双输出切换电路3中的继电器的最大耐压限值时，主控制器2会控制全桥逆变电路14关闭输出，从而保护双输出切换电路3。
优选地，主控制器2还连接一通信模块6，通信模块6用以接收用户终端7发出的控制信息并传输给主控制器2，该通信模块6与用户终端7通过有线或者无线连接。该用户终端7包括台式电脑、手机、IPAD等，使用时，用户通过用户终端7发送相关的控制信息给通信模块6，通信模块6接收该控制信息并传输给主控制器2，主控制器2根据该控制信息控制双输出切换电路3，使继电器K1或继电器K2择一工作，从而全桥逆变电路14转换与不同光源接通。实际使用时可根据需要设置光照范围、光照时间、光照强度等，如控制种植房1中的光源L1点亮，光源L2熄灭等，或者控制光源L1工作23小时，光源L2工作1小时等，或者控制光源L1及光源L2的输出功率等。
优选地，主控制器2还连接一显示模块8，该显示模块8受控于主控制器2以显示电路的异常情况。在本实施例中，主控制器2可实时检测市电的输入电压、全桥逆变电路14的输出电压、光源L1或者光源L2的输入电流、电子镇流器的温度等容易对电路工作造成影响的各项数据，当这些数据出现异常时，主控制器2会将检测结果传输给显示模块8显示，从而提醒用户及时检修电路，保证电路安全。在本实施例中，显示模块8采用液晶显示屏，其显示效果佳。在其他一些优选的方案中，还可根据实际需要设置一电路异常报警装置，达到更好地提醒用户的目的。
本发明的方案中，该可切换输出电子镇流器通过主控制器2控制双输出切换电路3切换继电器K1或继电器K2择一工作，使得全桥逆变电路14转换与不同光源接通，解决了现有电子镇流器需要配备一转换盒子才能实现分流点亮不同光源的不便；另外，该该可切换输出电子镇流器上还设置有高压检测电路5，可有效保护双输出切换电路3中的继电器，避免双输出切换电路3被损坏；同时，可切换输出电子镇流器还设置有显示模块8，可通过该显示模块8清楚地了解电路的异常情况，一旦发现异常可及时检修电路，保证电路安全。由此，该可切换输出电子镇流器的结构简单，无需配合转换盒子即可实现智能控制输出端连接不同的光源，使用方便，满足用户希望智能控制不同光源的需求，可广泛应用于大规模种植、养殖或者大范围的电路光源控制领域。
上述优选实施方式应视为本申请方案实施方式的举例说明，凡与本申请方案雷同、近似或以此为基础作出的技术推演、替换、改进等，均应视为本专利的保护范围。
Claims (8)
- 一种可切换输出电子镇流器，其特征在于，包括：一镇流模块，用以将市电转化为高频交流电，其包括顺次连接的滤波电路、AC-DC转换电路、功率因子校正电路和全桥逆变电路；一主控制器，与所述全桥逆变电路连接，用以驱动所述全桥逆变电路；一双输出切换电路，包括第一支路和第二支路，该第一支路和第二支路上分别设有继电器K1和继电器K2，其中，继电器K1的线圈端与所述主控制器连接，继电器K1的开关端通过光源L1与所述全桥逆变电路连接；继电器K2的线圈端与所述主控制器连接，继电器K2的开关端通过光源L2与所述全桥逆变电路连接；工作时，继电器K1和继电器K2受控于所述主控制器而交替工作，当所述主控制器输出高电平时，继电器K1工作以吸合开关端的开关闭合，所述全桥逆变电路接通光源L1，光源L1被点亮，而继电器K2不工作，所述全桥逆变电路与光源L2开路连接，光源L2不亮；当所述主控制器输出低电平时，继电器K1不工作，所述全桥逆变电路与光源L1开路连接，光源L1不亮，而继电器K2工作以吸合开关端的开关闭合，所述全桥逆变电路接通光源L2，光源L2被点亮；一辅助电源，其分别与主控制器及双输出切换电路连接，用以提供电源。
- 根据权利要求1所述的电子镇流器，其特征在于，所述第一支路还包括三极管Q1、二极管D1、电阻R1、电阻R2，三极管Q1的基极通过电阻R1与所述主控制器连接，且三极管Q1的基极通过电阻R2与三极管Q1的发射极连接，三极管Q1的发射极接地，三极管Q1的集电极通过所述继电器K1的线圈端与所述辅助电源连接，二极管D1并联在所述继电器K1的线圈端以保护电路。
- 根据权利要求2所述的电子镇流器，其特征在于，所述第二支路还包括三极管Q2、三极管Q3、二极管D2、电阻R3、电阻R4、电阻R5和电阻R6，三极管Q2的基极通过电阻R3与所述主控制器连接，且三极管Q2的基极通过电阻R4与三极管Q2的发射极连接，三极管Q2的发射极接地，三极管Q2的集电极通过电阻R5与所述辅助电源连接，且三极管Q2的集电极与三极管Q3的基极连接，三极管Q3的基极通过电阻R6与三极管Q3的发射极连接，三极管Q3的发射极接地，三极管Q3的集电极通过所述继电器K2的线圈端与所述辅助电源连接，二极管D2并联在所述继电器K2的线圈端以保护电路。
- 根据权利要求1所述的电子镇流器，其特征在于，所述全桥逆变电路还连接一高压检测电路，该高压检测电路与所述主控制器连接，通过所述主控制器检测所述全桥逆变电路的输出电压。
- 根据权利要求4所述的电子镇流器，其特征在于，所述高压检测电路包括电容C1、电容C2、电容C3、二极管D3、电阻R7、电阻R8和电阻R9，电容C1的一端与所述全桥逆变电路的火线连接，电容C1的另一端依次通过电阻R7、二极管D3的正极与所述主控制器连接，电阻R7还通过电阻R8接地，电阻R9并联连接在电阻R8两端，电容C2的一端与二极管D3的负极连接，电容C2的另一端接地，电容C3并联在电容C2的两端。
- 根据权利要求1所述的电子镇流器，其特征在于，所述主控制器还连接一通信模块，该通信模块用以接收用户终端发出的控制信息并传输给所述主控制器，该通信模块与用户终端通过有线或者无线连接。
- 根据权利要求1所述的电子镇流器，其特征在于，所述主控制器还连接一显示模块，该显示模块受控于所述主控制器以显示电路的异常情况。
- 根据权利要求7所述的电子镇流器，其特征在于，所述显示模块为一液晶显示屏。
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