Emergency power supply and microwave induction dimming compatible circuit of UFO lamp

Abstract

The invention discloses an emergency power supply and microwave induction dimming compatible circuit of a UFO lamp. The emergency power supply and microwave induction dimming compatible circuit comprises an emergency power supply, an LED driving power supply, a lamp and a dimming inductor, the lamp is connected with the LED driving power supply, and the dimming sensor is arranged on the lamp and connected with the LED driving power supply; the emergency power supply is connected with the LED driving power supply, and an AC / DC detection module is arranged in the LED driving power supply; when commercial power is supplied to the lamp, the LED driving power supply detects AC power input, the circuit is connected with dimming signals of the left-end emergency power supply and the right-end dimming sensor, and the whole lamp system works normally; when the commercial power is cut off, the front-end emergency power supply is switched to DC output to the LED driving power supply, and the LED driving power supply detects DC input and cuts off a dimming signal of the right-end dimming inductor, so that the dimming inductor is out of action in the emergency stage, and normal emergency work is ensured; the conflict phenomenon of UFO lamps when emergency and dimming sensors are used at the same time is solved, and normal work of the whole lamp system is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of lighting, and in particular to an emergency power supply and microwave induction dimming compatible circuit for a UFO lamp. Background Art

[0002] Emergency lighting is an important safety facility in modern public and industrial buildings. It is closely related to personal safety and building safety. When a fire or other disaster occurs in a building and the power supply is interrupted, emergency lighting plays an important role in personnel evacuation, fire rescue work, and the continued operation of important production and work or necessary operations.

[0003] At present, the emergency lighting system composed of emergency power supply and lamps is connected to dimming devices such as wall switches, timer switches, and human motion sensors. It is hoped that the lamps can provide necessary lighting during the period when there is lighting demand according to people's needs, and maintain low brightness or turn off at other times, so as to achieve energy saving, lamp utilization and compatibility with emergency.

[0004] Under normal circumstances with mains power, the addition of the above devices can indeed achieve the effects people need. During periods of human activity, the lamps can provide effective lighting. When lighting is not needed, the lamps can be turned off or half-lit to save electricity resources.

[0005] However, when there is no mains power to provide emergency lighting, the emergency power supply begins to actively provide power to the lamps and adjust the lamp power to achieve the target emergency power. At this time, the dimming device connected to the lamp (wall dimming, timed dimming, motion sensing, etc.) does not know that emergency should be given priority at this time, so it will compete with the emergency dimming for control of the lamp. After a period of competition, the emergency power supply detects that the load is abnormal and, according to the internal setting, prioritizes the protection device and disconnects the power supply to the lamp, which makes the lighting system unable to work normally. The biggest responsibility of a fully functional emergency lighting system should be to provide emergency lighting. In this case, the emergency lighting system has lost its most important emergency function. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an emergency power supply and microwave induction dimming compatible circuit for a UFO lamp.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An emergency power supply and microwave induction dimming compatible circuit for a UFO lamp comprises an emergency power supply, an LED driving power supply, a lamp and a dimming sensor; the lamp is connected to the LED driving power supply, the dimming sensor is placed on the lamp and connected to the LED driving power supply; the emergency power supply is connected to the LED driving power supply, and an AC / DC detection module is arranged in the LED driving power supply.

[0008] Preferably, the LED driving power supply includes a rectifier bridge, a PFC circuit, a Buck circuit, a dimming circuit module and an AC / DC detection module; the AC / DC detection module is respectively connected to the rectifier bridge and the dimming circuit module, the dimming circuit module is connected to the Buck circuit, and the rectifier bridge is connected to the PFC circuit.

[0009] Preferably, the dimming module includes a first relay and a dimming circuit, and the dimming circuit includes a first chip, a third capacitor, a fourth capacitor, a fifth capacitor and a ninth resistor; the first pin of the first chip is connected to one end of the third capacitor, and the other end of the third capacitor is respectively connected to the fourth capacitor and the Dim- pin of the emergency power supply; one end of the fourth capacitor is connected to the fourth pin of the first chip; one end of the fifth capacitor is connected to the fifth pin of the first chip, and the other end of the fifth capacitor is grounded; the eighth pin of the first chip is connected to one end of the ninth resistor, and the other end of the ninth resistor is connected to the first pin of the first relay; the first pin and the second pin of the first relay are normally closed.

[0010] Preferably, the AC / DC detection module includes an R / C circuit, an optocoupler, a voltage comparator and an amplifier circuit; the R / C circuit includes a first resistor, a second resistor and a first capacitor, the second resistor is respectively connected to the first resistor and the first capacitor, the first resistor is connected to the rectifier bridge, and the first capacitor is connected to the optocoupler.

[0011] Preferably, the amplification circuit includes a first transistor, a second transistor and an eighth resistor; one end of the eighth resistor is connected to the base of the second transistor, the other end of the eighth resistor is connected to the collector of the first transistor, the collector of the second transistor is connected to the first relay, and the base of the first transistor is connected to the output end of the voltage comparator; the emitter of the first transistor and the emitter of the second transistor are connected and grounded.

[0012] Preferably, the positive input terminal of the voltage comparator is connected to the optocoupler, the negative input terminal of the voltage comparator is connected to a sixth resistor, the sixth resistor is connected to the optocoupler, and the output terminal of the voltage comparator is connected to the base of the first transistor.

[0013] Preferably, the emergency power supply includes a PICU1 chip, a battery pack module, a transformer energy conversion module, an inverter circuit energy conversion module and a second relay; the PICU1 chip is respectively connected to the second relay and the transformer energy conversion module, the battery pack module is respectively connected to the transformer energy conversion module and the inverter circuit energy conversion module, and the inverter circuit energy conversion module is connected to the second relay.

[0014] Preferably, the fourteenth pin and the fifteenth pin of the PICU chip are grounded, the twentieth pin of the PICU chip is connected to the second relay; and the twenty-eighth pin of the PICU chip is connected to the transformer energy conversion module.

[0015] Preferably, the twenty-fifth pin of the PICU chip is connected to a fourth resistor, the fourth resistor is connected to the gate of the first field effect transistor, the drain of the first field effect transistor is connected to a sixth resistor, one end of the sixth resistor is respectively connected to the gate of the first field effect transistor and the fourth resistor, and the source of the first field effect transistor is connected to a seventh resistor.

[0016] Preferably, the twenty-sixth pin of the PICU chip is connected to a third resistor, the third resistor is connected to a fifth resistor, and the fifth resistor is respectively connected to the drain of the first field effect transistor and the sixth resistor.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention designs an emergency power supply and microwave induction dimming compatible circuit for a UFO lamp. When the lamp is supplied with AC power, the LED driving power supply detects AC power input, the circuit connects the dimming signals of the left-end emergency power supply and the right-end dimming sensor, and the entire lamp system works normally. When the AC power fails, the front-end emergency power supply switches to DC output to the LED driving power supply. When the LED driving power supply detects the DC input, the dimming signal of the right-end dimming sensor is disconnected, so that the dimming sensor loses its function in the emergency stage, thereby ensuring normal emergency operation. The conflict phenomenon when the UFO lamp uses emergency and dimming sensors at the same time is solved, thereby ensuring the normal operation of the entire lamp system. It can match a variety of emergencies and a variety of sensors, and has strong versatility.

[0018] The emergency power supply detects the power on and off of the mains; when the mains is connected, the emergency power supply detects the mains signal and transmits the working signal to the LED driver power supply through the dimming line. At this stage, the LED driver power supply will receive the signals from the emergency power supply and the dimming sensor at the same time, and the lighting system will work normally; when the mains is disconnected, the emergency power supply detects the mains power off and transmits the emergency signal to the LED driver power supply through the dimming line. After receiving the emergency signal, the LED driver power supply will no longer execute the signal from the dimming sensor, and at the same time feedback the information to the emergency power supply, and the emergency power supply will control the emergency state; it solves the conflict phenomenon when UFO type lamps use the emergency power supply and the dimming sensor at the same time, ensuring the normal operation of the entire lighting system; it has a high degree of intelligence and stable operation, and the later development of microwaves can realize more functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 A schematic diagram of the structure proposed by the present invention; Figure 2 A schematic diagram of the structure of an embodiment of the present invention; Figure 3 A circuit diagram of the LED driving power supply proposed by the present invention; Figure 4 A circuit diagram of the lamp proposed by the present invention; Figure 5 The circuit diagram of the emergency power supply proposed by the present invention.

[0020] Legend: 1. Emergency power supply, 2. LED driver power supply, 3. Lamp, 4. Dimming sensor, S1. Dimming circuit, S2. R / C circuit, S3. Voltage comparator, S4. Amplifier circuit, S5. AC / DC detection module, S6. PFC circuit, S7. Buck circuit. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more; in addition, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Reference Figures 1 to 5 As shown, an emergency power supply and microwave induction dimming compatible circuit of a UFO lamp includes an emergency power supply 1, an LED driving power supply 2, a lamp 3 and a dimming sensor 4; the lamp 3 is connected to the LED driving power supply 2, and the dimming sensor 4 is placed on the lamp 3 and connected to the LED driving power supply 2; the emergency power supply 1 is connected to the LED driving power supply 2, and an AC / DC detection module S5 is arranged in the LED driving power supply 2; the dimming circuit S1 converts the external dimming signal into a control signal to control the Buck circuit S7 to control the output current.

[0024] Among them, the LED driving power supply 2 includes a rectifier bridge D1, a PFC circuit S6, a Buck circuit S7, a dimming circuit module and an AC / DC detection module S5; the AC / DC detection module S5 is respectively connected to the rectifier bridge D1 and the dimming circuit module, the dimming circuit module is connected to the Buck circuit S7, and the rectifier bridge D1 is connected to the PFC circuit S6; the dimming module includes a first relay Relay-1 and a dimming circuit S1, and the dimming circuit S1 includes a first chip U, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a ninth resistor R9; the A first pin of a chip U is connected to one end of a third capacitor C3, and the other end of the third capacitor C3 is respectively connected to a fourth capacitor C4 and a Dim- pin of an emergency power supply 1; one end of the fourth capacitor C4 is connected to the fourth pin of the first chip U; one end of the fifth capacitor C5 is connected to the fifth pin of the first chip U, and the other end of the fifth capacitor C5 is grounded; the eighth pin of the first chip U is connected to one end of a ninth resistor R9, and the other end of the ninth resistor R9 is connected to the first pin of a first relay Relay-1; the first pin and the second pin of the first relay Relay-1 are normally closed.

[0025] AC / DC detection module S5 includes R / C circuit S2, optocoupler U1, voltage comparator S3 and amplifier circuit S4; R / C circuit S2 includes a first resistor R1, a second resistor R2 and a first capacitor C1, the second resistor R2 is connected to the first resistor R1 and the first capacitor C1 respectively, the first resistor R1 is connected to the rectifier bridge D1, and the first capacitor C1 is connected to the optocoupler U1; R / C circuit S2 isolates DC and passes AC. When DC power is applied, a low level is formed at the optocoupler U1 end, and when AC power is applied, a high level is formed at the optocoupler U1 end; the optocoupler U1 detects the R / C circuit S2 The formed signal is transmitted to the back end; when the primary is high, the secondary outputs a low level, and when the primary is low, the secondary outputs a high level; the voltage comparator S3 compares the voltage at the in-phase end, and outputs a high level when the in-phase end is high, and outputs a low level when the in-phase end is low, to prevent interference and avoid circuit malfunction; the amplifier circuit S4 composed of dual triodes amplifies the signal output by the comparator and is used to drive the relay; the first relay Relay-1 is a normally closed relay with pins 1 and 2. When the control signal is high, the connection between pins 1 and 2 is disconnected, that is, the dimming line output is disconnected, and the connection of the Sensor is disconnected.

[0026] The amplifier circuit S3 includes a first transistor Q1, a second transistor Q2 and an eighth resistor R8; one end of the eighth resistor R8 is connected to the base of the second transistor Q2, the other end of the eighth resistor R8 is connected to the collector of the first transistor Q1, the collector of the second transistor Q2 is connected to the first relay Relay-1, and the base of the first transistor Q1 is connected to the output end of the voltage comparator S3; the emitter of the first transistor Q1 and the emitter of the second transistor Q2 are connected and grounded; the positive electrode of the input end of the voltage comparator S3 is connected to the optocoupler U1, the negative electrode of the input end of the voltage comparator S3 is connected to a sixth resistor R6, the sixth resistor R6 is connected to the optocoupler U1, and the output end of the voltage comparator S3 is connected to the base of the first transistor.

[0027] The emergency power supply 1 includes a PICU1 chip, a battery pack module, a transformer energy conversion module, an inverter circuit energy conversion module, and a second relay Relay; the PICU1 chip is respectively connected to the second relay Relay and the transformer energy conversion module, the battery pack module is respectively connected to the transformer energy conversion module and the inverter circuit energy conversion module, and the inverter circuit energy conversion module is connected to the second relay Relay; the fourteenth and fifteenth pins of the PICU chip are grounded, the twentieth pin of the PICU chip is connected to the second relay Relay; the twenty-eighth pin of the PICU chip is connected to the transformer energy conversion module; the twenty-fifth pin of the PICU chip is connected to the fourth resistor R4, the fourth resistor R4 is connected to the gate of the first field effect tube, and the first field effect The drain of the tube is connected to a sixth resistor R6, one end of the sixth resistor R6 is respectively connected to the gate of the first field effect tube and the fourth resistor R4, and the source of the first field effect tube is connected to a seventh resistor R7; the twenty-sixth pin of the PICU chip is connected to a third resistor R3, the third resistor R3 is connected to a fifth resistor R5, and the fifth resistor R5 is respectively connected to the drain of the first field effect tube and the sixth resistor R6; the second relay Relay is controlled by the single-chip microcomputer to realize the conversion between the mains output and the emergency output; the single-chip microcomputers on both sides are responsible for the signal detection and control of their circuits respectively to realize the output of the circuit; a group of DIM signals connected therein are responsible for the signal communication between the emergency and LED driver power supply 2; when the mains is on, the circuits on both sides work normally; in an emergency, the Driver DIM of the emergency power supply 1 and the DIM 1 of the LED driver power supply 2 maintain fixed communication, and the signal of the DIM2 of the LED driver power supply 2 will be shielded and the command will no longer be executed.

[0028] like Figure 1 , Figure 3As shown, an AC / DC detection module S5 is added inside the LED driver power supply 2; when the mains power is supplied to the lamp 3, the LED driver power supply 2 detects the AC power input, and the circuit will connect the dimming signals of the left-end emergency power supply 1 and the right-end dimming sensor 4, and the entire lamp system works normally; when the mains power is off, the front-end emergency power supply 1 switches to DC output to the LED driver power supply 2, and the LED driver power supply 2 detects the DC input and disconnects the dimming signal of the right-end dimming sensor 4, making the dimming sensor 4 lose its function in the emergency stage, thereby ensuring normal emergency operation; the conflict phenomenon of UFO-type lamps when using emergency and dimming sensors at the same time is solved, thereby ensuring the normal operation of the entire lamp system; it can match a variety of emergency and multiple sensors, and has strong versatility.

[0029] like Figure 2 As shown, by physically changing the line, the Sensor DIM+ line originally electrically connected to the lamp 3 is disconnected from the LED driver power supply 2, and then led out separately from the inside of the LED driver power supply 2 and connected to the Sensor Dim+ end of the emergency power supply 1; when the mains power is connected, the Sensor DIM+ line is connected to the Sensor Dim+ end of the emergency power supply 1, and the inside of the emergency power supply 1 will connect the Sensor Dim+ and Dri DIM+ to realize the dimming sensor 4 function, and the entire lamp system works normally at this time; when the mains power is cut off and enters the emergency state, the emergency power supply 1 will disconnect the Sensor Dim+ and Dri DIM+, and at this time, the control function of the Sensor DIM+ is removed from the lamp to realize the normal emergency operation; the conflict phenomenon of UFO type lamps using emergency and dimming sensors 4 at the same time is solved, and the normal operation of the entire lamp system is guaranteed; it can match a variety of emergency and a variety of sensors, with strong versatility and low cost.

[0030] like Figure 1 , Figure 4 , Figure 5As shown, the emergency power supply 1 detects the power on and off of the mains; when the mains is connected, the emergency power supply 1 detects the mains signal and transmits the working signal to the LED driver power supply 2 through the dimming line. At this stage, the LED driver power supply 2 will receive the signals of the emergency power supply 1 and the dimming sensor 4 at the same time, and the lighting system works normally; when the mains is disconnected, the emergency power supply 1 detects the mains power off and transmits the emergency signal to the LED driver power supply 2 through the dimming line. After receiving the emergency signal, the LED driver power supply 2 will no longer execute the signal from the dimming sensor 4, and at the same time feedback the information to the emergency power supply 1, and the emergency power supply 1 controls the emergency state; at this stage, the emergency power supply 1, the LED driver power supply 2 and the lamp 3 work normally, and the dimming sensor 4 does not work; the conflict phenomenon of UFO type lamps when using the emergency power supply 1 and the dimming sensor 4 at the same time is solved, and the normal operation of the entire lamp system is guaranteed; the intelligent degree is high, the operation is stable, and the later supporting development of microwaves can realize more functions.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An emergency power supply and microwave induction dimming compatible circuit for a UFO lamp, characterized in that: It includes an emergency power supply, an LED driving power supply, a lamp and a dimming sensor; the lamp is connected to the LED driving power supply, the dimming sensor is placed on the lamp and connected to the LED driving power supply; the emergency power supply is connected to the LED driving power supply, and an AC / DC detection module is arranged in the LED driving power supply.

2. According to claim 1, the emergency power supply and microwave induction dimming compatible circuit of a UFO lamp is characterized in that: The LED driving power supply includes a rectifier bridge, a PFC circuit, a Buck circuit, a dimming circuit module and an AC / DC detection module; the AC / DC detection module is respectively connected to the rectifier bridge and the dimming circuit module, the dimming circuit module is connected to the Buck circuit, and the rectifier bridge is connected to the PFC circuit.

3. According to claim 2, the emergency power supply and microwave induction dimming compatible circuit of a UFO lamp is characterized in that: The dimming module includes a first relay and a dimming circuit, and the dimming circuit includes a first chip, a third capacitor, a fourth capacitor, a fifth capacitor and a ninth resistor; the first pin of the first chip is connected to one end of the third capacitor, and the other end of the third capacitor is respectively connected to the fourth capacitor and the Dim- pin of the emergency power supply; one end of the fourth capacitor is connected to the fourth pin of the first chip; one end of the fifth capacitor is connected to the fifth pin of the first chip, and the other end of the fifth capacitor is grounded; the eighth pin of the first chip is connected to one end of the ninth resistor, and the other end of the ninth resistor is connected to the first pin of the first relay; the first pin and the second pin of the first relay are normally closed.

4. According to claim 3, the emergency power supply and microwave induction dimming compatible circuit of a UFO lamp is characterized in that: The AC / DC detection module includes an R / C circuit, an optocoupler, a voltage comparator and an amplifier circuit; the R / C circuit includes a first resistor, a second resistor and a first capacitor, the second resistor is connected to the first resistor and the first capacitor respectively, the first resistor is connected to the rectifier bridge, and the first capacitor is connected to the optocoupler.

5. According to claim 4, the emergency power supply and microwave induction dimming compatible circuit of a UFO lamp is characterized in that: The amplifying circuit includes a first triode, a second triode and an eighth resistor; one end of the eighth resistor is connected to the base of the second triode, the other end of the eighth resistor is connected to the collector of the first triode, the collector of the second triode is connected to the first relay, and the base of the first triode is connected to the output end of the voltage comparator; the emitter of the first triode and the emitter of the second triode are connected and grounded.

6. According to claim 5, the emergency power supply and microwave induction dimming compatible circuit of a UFO lamp is characterized in that: The positive input terminal of the voltage comparator is connected to the optocoupler, the negative input terminal of the voltage comparator is connected to a sixth resistor, the sixth resistor is connected to the optocoupler, and the output terminal of the voltage comparator is connected to the base of the first transistor.

7. According to claim 6, the emergency power supply and microwave induction dimming compatible circuit of a UFO lamp is characterized in that: The emergency power supply includes a PICU1 chip, a battery pack module, a transformer energy conversion module, an inverter circuit energy conversion module and a second relay; the PICU1 chip is respectively connected to the second relay and the transformer energy conversion module, the battery pack module is respectively connected to the transformer energy conversion module and the inverter circuit energy conversion module, and the inverter circuit energy conversion module is connected to the second relay.

8. According to claim 7, the emergency power supply and microwave induction dimming compatible circuit of a UFO lamp is characterized in that: The fourteenth pin and the fifteenth pin of the PICU chip are grounded, the twentieth pin of the PICU chip is connected to the second relay; and the twenty-eighth pin of the PICU chip is connected to the transformer energy conversion module.

9. The emergency power supply and microwave induction dimming compatible circuit of a UFO lamp according to claim 8, characterized in that: The twenty-fifth pin of the PICU chip is connected to a fourth resistor, the fourth resistor is connected to the gate of the first field effect transistor, the drain of the first field effect transistor is connected to a sixth resistor, one end of the sixth resistor is respectively connected to the gate of the first field effect transistor and the fourth resistor, and the source of the first field effect transistor is connected to a seventh resistor.

10. The emergency power supply and microwave induction dimming compatible circuit of a UFO lamp according to claim 9, characterized in that: The twenty-sixth pin of the PICU chip is connected to a third resistor, the third resistor is connected to a fifth resistor, and the fifth resistor is respectively connected to the drain of the first field effect transistor and the sixth resistor.

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