CN116347720A - Induction emergency control circuit and lighting lamp - Google Patents
Induction emergency control circuit and lighting lamp Download PDFInfo
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- 230000001939 inductive effect Effects 0.000 claims description 18
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- 238000007599 discharging Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 description 8
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/022—Emergency lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
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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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Microelectronics & Electronic Packaging (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an induction emergency control circuit which comprises an emergency controller and an induction module. According to the invention, a non-full-time induction emergency lighting fixture suitable for common household use and a full-time induction emergency lighting fixture suitable for use in public spaces are realized. The invention can greatly expand the emergency lighting time, and is especially suitable for areas with underdeveloped electric power infrastructure.
Description
Technical Field
The invention relates to an emergency lighting control circuit, in particular to an LED emergency lighting control circuit supporting an induction function and an induction emergency lighting lamp comprising the control circuit.
Background
As a new generation of illumination light sources, LEDs have been widely used. Currently, there are two special LED fixtures in the market. One is a lamp with induction function, which takes a sound control, human body infrared induction or radar module as an induction circuit; another type is an ac emergency lighting fixture that contains an energy storage element, such as a lithium battery. The induction lamp has the function of lighting when a person gets on and turning off when the person gets off. The basic function of the alternating current emergency lighting lamp is that after the power grid stops supplying power, the energy storage battery releases energy to the load LED to provide emergency lighting.
The circuit structure of the induction lamp which is mainstream in the market at present is shown in fig. 1. In this circuit, the constant current controller 110 provides a constant working current for the LED load 102, and generally provides a power supply SVDD for the sensing module 120 at the same time; the sensing module 120 determines whether the LED load 102 is on or off. Typically, when the sense module 120 outputs a signal SMON high (by a person), the LED load 102 is turned on (the lamp is on); when the output signal SMON is low (human go), the LED load 102 is turned off (lamp off). The sensing module 120 may be a voice control module, a human body infrared sensing module, a radar sensing module (3 GHz, 5.8GHz, 10GHz, 24GHz, 60GHz, etc.).
Fig. 2 shows a circuit configuration of an ac emergency lighting fixture of the prior art. After the lamp switch 101 is closed, if the ac power grid is supplying power normally, the constant current controller 110 provides a constant working current for the LED primary light source load 102, and the current is also the charging current of the energy storage battery 202. At this time, inside the emergency controller 210, the grid and switch monitoring circuit 211 outputs an ac start signal ACON of a high level and an emergency start signal EMON of a low level. ACON is 1 and EMON is 0, indicating that the light switch 101 is in the closed state (i.e., the light is in the on state) and at the same time the ac grid is normally powered, the main light source 102 is on and the emergency light source 201 is off. The high ACON will activate the charge management circuit 212 to monitor the voltage BAT of the energy storage battery 202 to prevent overcharging and damage to the energy storage battery 202. After the low level EMON is inverted by the inverter 214, the PMOS switching tube 213 is turned off, and the emergency light source 201 will not operate.
If the AC power grid fails to supply power normally, the main light source 102 is turned off after the lamp switch 101 is closed; the output signal EMON of the power grid and switch monitoring circuit 211 is changed from low to high, and the PMOS discharge tube 213 is turned on after passing through the inverter 214, so as to discharge the energy storage battery 202 corresponding to the emergency light source 201, and the energy storage battery has limited capacity, so that emergency illumination is provided for a limited time. At this stage, ACON is 0 and EMON is 1, the main light source 102 is off, and the emergency light source 201 is on. The emergency brightness is determined by the magnitude of the current through the LED emergency light source 201, as shown in the following equation (1).
I(LED 201 )＝(BAT-V LED )/R (1)
General LED on voltage V LED For 2.8v, r represents the resistance of the series current limiting resistor 203, and the power switch PMOS 213 can be regarded as an ideal switch.
When the lamp is in the off state, that is, after the switch 101 is turned off, the main light source 102 is turned off and the emergency light source 201 is turned off no matter whether the ac power grid is normally powered or not, and the two output signals ACON and EMON of the power grid and the switch monitoring circuit 211 are both low.
The induction lamp shown in fig. 1 is widely used in many countries, and is suitable for being applied to public spaces needing illumination for 24 hours, such as hallways, toilets, stairwells, underground parking lots and the like; the lamp can be turned on by people (or vehicles) and turned off by people (or vehicles), so that a considerable energy-saving effect is achieved, and the service life of the lamp can be prolonged.
The ac emergency light fixture shown in fig. 2 is suitable for countries and regions where the electric power infrastructure is less developed, such as southeast asia, south asia, western asia, africa and the like, and the places are frequently powered off, so that inconvenience is brought to the life and work of the general public. Such ac emergency lighting fixtures have been used to some extent in the above-mentioned areas, and are often used for general civilian lighting, but are not suitable for use in public spaces requiring 24 hours of lighting.
Disclosure of Invention
The invention aims to solve the above-mentioned limitation of the alternating current emergency lighting lamp in the prior art, and provides a new emergency lighting lamp capable of supporting an induction function, which can meet the lighting requirements of lighting by people (vehicles) and lighting by people (vehicles) no matter during normal power supply of a power grid or during power supply stopping of the power grid.
According to a first aspect of the present invention, there is provided an induction emergency control circuit for use in an emergency lighting fixture, the induction emergency control circuit comprising an emergency controller and an induction module, wherein the induction module outputs an induction signal SMON to the emergency controller when a person or a moving object is detected during power supply; the emergency controller is connected with an alternating current power grid through the lamp switch, and when the power grid power failure is detected and the lamp switch is closed, the voltage BAT of the energy storage battery of the lamp is used for supplying power to the induction module, and when the induction signal SMON is received, the energy storage battery is controlled to perform high-brightness discharge on the LED emergency light source of the lamp.
According to a second aspect, a non-full-time induction emergency lighting fixture is provided, which comprises the induction emergency control circuit, the constant current controller, the LED main light source, the energy storage battery and the LED emergency light source, wherein the constant current controller provides constant working current for the LED main light source.
According to a third aspect, a full-time induction emergency lighting lamp is provided, which comprises the induction emergency control circuit, the constant current controller, the LED main light source provided with the short-circuit switch, the energy storage battery and the LED emergency light source, wherein the constant current controller provides constant working current for the LED main light source.
According to a fourth aspect, a full-time induction emergency lighting fixture is provided, which comprises the induction emergency control circuit, the constant current controller, the LED main light source provided with the series switch, the AC/DC charging circuit, the energy storage battery and the LED emergency light source, wherein the constant current controller provides constant working current for the LED main light source.
According to the induction emergency control circuit, the non-full-time induction emergency lighting lamp suitable for common household use and the full-time induction emergency lighting lamp suitable for public space use are realized. The invention can greatly expand the emergency lighting time, is especially suitable for countries and regions with underdeveloped electric power infrastructure, and can improve the working and living conditions of people in these regions to a certain extent.
Drawings
For a better understanding of the present invention, the present invention will be further described with reference to the following examples, taken in conjunction with the accompanying drawings. In the accompanying drawings:
FIG. 1 shows a circuit configuration of an induction lamp currently mainstream in the market in the prior art;
FIG. 2 shows a circuit configuration of a prior art AC emergency lighting fixture;
FIG. 3 is a circuit block diagram of a non-full time induction emergency lighting fixture according to an embodiment of the present invention;
FIG. 4 is a circuit block diagram of a full time induction emergency lighting fixture according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a full-time induction emergency lighting fixture according to another embodiment of the present invention.
Detailed Description
The inventor considers that firstly, a non-full-time induction emergency lamp suitable for common household is realized, and only an emergency light source of the lamp has an induction function. Under the condition that the alternating current power grid supplies power normally, the main light source is controlled by the lamp switch only, and the lamp has no induction function like a common lighting lamp. Under the power failure state, the emergency light source is controlled by the lamp switch and the induction module, so that the lamp of a person (car) is turned on and the lamp of the person (car) is turned off (or is dark).
To operate during emergency lighting, the sensing module requires a suitable supply voltage. Since the lithium battery voltage is between 3V and 4.2V, it is suitable for directly powering the induction module. Furthermore, except for the fact that the working current of the human body infrared induction module is less than 1mA, the working currents of other induction modules (especially radar modules) are larger, for example, the working currents of the 5.8GHz or 10GHz radar induction modules are close to 10mA or even larger. The large working current determines that the induction module cannot work all the time, and the induction module can only work when the induction module needs to be electrified, and the power supply is completely stopped when the induction module does not need to work. Thus, the sensing module requires a dedicated power supply circuit. In addition, the output signals of the various sensing modules almost all indicate that a person or a moving object is sensed by a high level, and indicate that no person or moving object is sensed by a low level.
Referring to fig. 3, fig. 3 is a circuit configuration diagram of a non-full-time induction emergency lighting fixture according to an embodiment of the present invention. The sensing emergency control circuit mainly comprises an emergency controller 310 and a sensing module 120. The sensing module 120 is used to output a sensing signal SMON to the emergency controller 310 when a person or a moving object is detected during power supply. The emergency controller 310 is connected to the ac power grid through the light switch 101, and is configured to use the voltage BAT of the energy storage battery 202 to supply power to the induction module 120 when a power outage of the power grid is detected and the light switch 101 is closed; and when receiving the sensing signal SMON, the energy storage battery 202 is controlled to perform high-brightness discharge on the LED emergency light source 201.
Compared to the emergency controller 210 in fig. 2, the emergency controller 310 has two more pins: pin SVDD and pin SMON. Pin SVDD supplies power to sensing module 120 and pin SMON receives the sensed output signal from sensing module 120. Inside the emergency controller 310, the source of the power supply PMOS tube 314 is connected to the energy storage battery voltage BAT; the gate is connected to the output of inverter 315; the drain is connected to the sensing module 120 via pin SVDD and to the LED emergency light source 201 via resistor 304. PMOS transistor 314 may be considered an ideal switch, so the supply voltage of sense module 120 is approximately equal to BAT. The source of the discharge PMOS 213 is also connected to the battery voltage BAT, the gate is connected to the output of the nand gate 316, and the drain is connected to the emergency light source 201 via the resistor 203.
During normal power supply of the power grid, after the lamp switch 101 is closed, the AC/DC constant current controller 110 starts to work, and constant working current is provided for the LED main light source 102. Meanwhile, an emergency starting signal EMON output by the power grid and switch monitoring circuit 211 inside the emergency controller 310 is at a low level, and the power supply PMOS tube 314 is turned off after passing through the inverter 315, so that the power supply to the induction module 120 is stopped. The power SVDD of the sensing module 120 is low, the output signal SMON thereof is also low, and the low levels SMON and EMON are high after the logic operation of the nand gate 316, which means that the discharge PMOS tube 213 is also in the off state, and the emergency light source 201 will not emit light.
At this stage, the grid and switch monitoring circuit 211 also outputs an ac start signal ACON to the charge management circuit 212. The charge management circuit 212 is connected to the main light source 102, and charges the energy storage battery 202 with the operating current of the main light source 102 when the ac start signal ACON is started.
During the period that the power supply of the power grid is stopped, after the lamp switch 101 is closed, the AC/DC constant current controller 110 cannot work normally, and the main light source 102 stops emitting light. At this time, the signal EMON is changed from low level to high level, and the power supply PMOS transistor 314 is turned on after passing through the inverter 315 to supply power to the sensing module 120, where the power supply voltage is equal to the energy storage battery voltage BAT. During this time, if the sensing module 120 detects a person or other moving object, the output signal SMON thereof changes from low level to high level, and the high level SMON and the EMON which are both high level are nand-logically operated to obtain low level, which means that the discharge PMOS tube 213 is in the on state, and the emergency light source 201 starts to emit light to provide emergency illumination.
At this stage, when the output signal SMON of the sensing module 120 is low, the resistance of the resistor 304 determines the brightness of the emergency light source 201 as shown in the following formula (2). In general, the brightness is low at this time, and the energy saving mode is used. The larger the resistance of the resistor 304 is, the lower the brightness is; after resistor 304 (infinite resistance) is directly removed, the energy-saving brightness is zero.
I(LED 201 )＝(BAT-V LED )/R 304 (2)
When the output signal SMON of the sensing module 120 is high, the resistances of the resistor 304 and the resistor 203 determine the brightness of the emergency light source 201 together, as shown in the following formula (3). At this point the brightness is maximized. Since the resistance of the resistor 304 is generally 5 times or more the resistance of the resistor 203, the brightness is approximately determined by the resistor 203 alone. That is, the resistor 304 determines the low brightness (dark light of the person) in the energy-saving mode after the person leaves, and the high brightness after the person leaves is determined by the resistor 203. If the user is required to go, the lamp is turned off, and the resistor 304 is removed, so that the purpose can be achieved.
I(LED 201 )＝(BAT-V LED )/(R 304 //R 203 )≈(BAT-V LED )/R 203 (3)
Under the condition that the lamp switch 101 is turned off, no matter the power grid is normally powered or the power is cut off, the internal signals ACON and EMON of the emergency controller 310 are low, the discharging PMOS tube 213 and the power supply PMOS tube 314 are in the off state, and the emergency light source 201 and the main light source 102 can not emit light.
And then, the full-time induction emergency lighting lamp suitable for being used in public spaces is realized, and the main light source and the emergency light source of the lamp have induction functions. That is, during the normal power supply period of the ac power grid, the main light source is also controlled by the sensing module, so that the functions of lighting by people and lighting by people to turn off the lights are provided, and the emergency light source is turned off. After the alternating current power grid stops supplying power, the main light source is turned off, the induction module controls the emergency light source to perform emergency lighting, and the induction lighting function of lighting the lamp by people and lighting the lamp by people is provided. Since the emergency light source is applied to a public space requiring 24 hours of illumination, if the emergency light source does not have a sensing function after power failure, the emergency illumination time is very limited, and usually only two or three hours are obviously insufficient. The induction function is introduced, so that the lighting of a person (car) is realized, the lighting of the person (car) is removed, and the emergency lighting time can be greatly prolonged.
The difficulty faced in realizing the full-time induction emergency lighting lamp is how to continue charging the energy storage battery after the lamp of a person (car) goes out, namely after the main light source goes out, under the condition that the power grid supplies power normally. The continuous charging of the energy storage battery is very important, one of the reasons is that in a public space where illumination is provided in 24 hours, the lighting time is generally less than 10%, for example, the energy storage battery can take more than 5 days to be fully charged only in the 10% lighting time; another reason is that the sensing module may employ a radar with a large operating current (10 mA or more), such as being unable to charge during a long-term turn-off, which may continuously consume the power of the energy storage battery, which may be depleted. The energy storage battery can be fully charged in about half a day if the lamp is always chargeable no matter the lamp is on or off. In countries and regions where power is often off, it is necessary to fully charge in time.
One way to charge the energy storage battery used in the present invention is to short circuit the primary light source 102. Referring to fig. 4, fig. 4 is a circuit configuration diagram of a full-time induction emergency lighting fixture according to an embodiment of the present invention. The main light source 102 of the lamp is provided with a short-circuit switch 501; in the case of mains supply and the lamp switch 101 being closed, the emergency controller 510 controls the short-circuit switch 501 to be closed by the inverted sense signal SMONB when the sense signal SMON is not received, so that the main light source 102 is short-circuited and no longer emits light. Thus, the current output from the front AC/DC constant current controller 110 charges the following energy storage battery 202 through the short circuit switch 501, that is, the front constant current controller 110 has only the energy storage battery 202 as a load.
The emergency controller 510 also uses the voltage BAT of the energy storage battery 202 to power the sensing module 120 in case of detecting mains power and the lamp switch 101 being closed, and opens the short-circuit switch 501 when receiving the sensing signal SMON, at which time the main light source 102 emits light.
In comparison with fig. 3, the inductive emergency control circuit of fig. 4 is similar to that of fig. 3 except that inverter 315 is replaced with nor gate 415 and inverter 517 is added to the emergency controller of fig. 3.
The operation of the circuit of fig. 4 is described in detail below. During normal power supply of the power grid, after the lamp switch 101 is closed, the AC/DC constant current controller 110 starts to operate to provide constant operating current for the following circuits. At this time, the ac start signal ACON in the emergency controller 510 is at a high level, and the charge management circuit 212 monitors the voltage BAT of the energy storage battery 202 to prevent overcharging; meanwhile, the power supply PMOS tube 314 is turned on after the high-level ACON passes through the nor gate 415 to supply power to the sensing module 120, and provides a low-brightness working current for the emergency light source 201 through the resistor 304, where the above formula (2) is also applicable. The internal signal EMON is low and sent to NAND gate 316 to generate a high, turning off discharge PMOS tube 213.
At this stage, after the sensing module 120 operates normally, when no person (car) is present, its output signal SMON is low, and the inverter 517 generates the high-level SMONB to turn on the short-circuit switch 501, so that the main light source 102 is short-circuited and does not emit light, that is, the person (car) goes to light (or is dark), and the output current of the front-stage AC/DC constant-current controller 110 is only used to charge the energy storage battery 202. When a person (car) comes, the output signal SMON of the sensing module 120 is at a high level, and a low level SMONB is generated by the inverter 517 to turn off the short-circuit switch 501, so that the output current of the front-stage AC/DC constant-current controller 110 passes through the main light source 102 to realize the lighting of the person (car).
During the period that the power supply of the power grid is stopped, after the lamp switch 101 is closed, the AC/DC constant current controller 110 cannot work normally, and the main light source 102 stops emitting light. At this time, the signal EMON is changed from low level to high level, and the power supply PMOS tube 314 is turned on after the nor gate 415 is used to supply power to the sensing module 120, where the power supply voltage is equal to the battery voltage BAT; and provides a low-intensity operating current to the emergency light source 201 through the resistor 304, which is also applicable to the above equation (2).
During this time, if the sensing module 120 detects a person or other moving object, the output signal SMON thereof changes from low level to high level, and the high level SMON and the high level EMON are subjected to nand logic operation to obtain low level, the discharge PMOS 213 is turned on, and the emergency light source 201 emits light to provide emergency illumination. When the person (car) leaves, the output signal SMON of the sensing module 120 is low, and similarly, the brightness of the emergency light source 201 is determined by the resistor 304, as in the above formula (2), and the energy saving mode is set. When the output signal SMON of the sensing module 120 is high, the resistor 304 and the resistor 203 determine the brightness of the emergency light source 201 together, and the above formula (3) is applied, and the brightness reaches the maximum. The resistance of resistor 304 may still be more than 5 times the resistance of resistor 203, so it is approximately considered that the brightness is determined only by resistor 203. If the person (car) is required to leave, the lamp must be turned off, and the resistor 304 is removed.
Under the condition that the lamp switch 101 is turned off, no matter the power grid is normally powered or the power is cut off, the signals ACON and EMON in the emergency controller 510 are low, the discharging PMOS tube 213 and the power supply PMOS tube 314 are both turned off, and the emergency light source 201 and the main light source 102 cannot emit light.
According to the invention, the energy storage battery is charged by switching off the main light source. Referring to fig. 5, fig. 5 is a circuit configuration diagram of a full-time induction emergency lighting fixture according to another embodiment of the present invention. The primary light source 102 is provided with a series switch 401. Because the front-end AC/DC constant current controller 110 outputs no load after the main light source 102 is turned off, and enters a light load hiccup mode, it is unable to provide enough energy to charge the following energy storage battery 202, and therefore an additional AC/DC charging circuit 420 is required. The AC/DC charging circuit 420 is typically a constant voltage or constant current control circuit that converts AC to low voltage DC. In comparison to fig. 4, the inductive emergency control circuit of fig. 5 lacks inverter 517 and the remaining circuit structure is similar to that of fig. 4. Overall, the circuit of fig. 5 is more complex and costly than that of fig. 4.
In the example of fig. 5, the emergency controller 410 uses the voltage BAT of the energy storage battery 202 to power the sensing module 120 when the power grid is detected and the lamp switch 101 is closed, and closes the serial switch 401 when the sensing signal SMON is received, so that the main light source 102 emits light; when the sensing signal SMON is not received, the emergency controller 410 controls the series switch 401 to be opened, and the AC/DC charging circuit 420 is used to charge the energy storage battery 202. The specific operation of the circuit of fig. 5 is similar to that of fig. 4 and will not be repeated.
It will be apparent that many variations of the invention as described herein are possible and such variations are not to be regarded as a departure from the spirit and scope of the invention. Accordingly, all changes which become apparent to those skilled in the art are intended to be included within the scope of the appended claims.
Claims (16)
1. An induction emergency control circuit for an emergency lighting lamp, the induction emergency control circuit comprises an emergency controller and an induction module, wherein,
the sensing module outputs a sensing signal SMON to the emergency controller when a person or a moving object is detected during power supply;
the emergency controller is connected with an alternating current power grid through the lamp switch, and when the power grid is detected to be in power failure and the lamp switch is closed, the voltage BAT of the lamp energy storage battery is used for supplying power to the induction module, and when the induction signal SMON is received, the energy storage battery is controlled to perform high-brightness discharge on the lamp LED emergency light source.
2. The inductive emergency control circuit of claim 1, wherein the emergency controller comprises a power grid and switch monitoring circuit, an inverter, and a power supply PMOS transistor, the inductive emergency control circuit further comprising a first resistor, wherein,
the power grid and switch monitoring circuit is connected with an alternating current power grid through the lamp switch, and outputs an emergency starting signal EMON to the inverter under the condition that power failure of the power grid is detected and the lamp switch is closed;
the output end of the inverter is connected with the grid electrode of the power supply PMOS tube;
the source electrode of the power supply PMOS tube is connected with the energy storage battery voltage BAT; the drain electrode is connected with the sensing module and connected with the LED emergency light source through the first resistor.
3. The inductive emergency control circuit of claim 2, wherein the emergency controller further comprises a NAND gate and a discharge PMOS tube, the inductive emergency control circuit further comprising a second resistor, wherein,
the power grid and switch monitoring circuit also outputs an emergency starting signal EMON to an input end of the NAND gate under the condition that the power grid power failure is detected and the lamp switch is closed;
the other input end of the NAND gate is connected with the induction signal SMON, and the output end of the NAND gate is connected with the grid electrode of the discharge PMOS tube;
and the source electrode of the discharging PMOS tube is connected with the energy storage battery voltage BAT, and the drain electrode of the discharging PMOS tube is connected with the LED emergency light source through the second resistor.
4. The inductive emergency control circuit of claim 3, wherein the first resistor has a resistance that is greater than 5 times the resistance of the second resistor.
5. The inductive emergency control circuit of claim 3, wherein the emergency controller further comprises a charge management circuit, wherein,
the power grid and switch monitoring circuit outputs an alternating current starting signal ACON to the charging management circuit under the condition that the power grid is detected to supply power and a lamp switch is closed;
the charging management circuit is connected with the LED main light source of the lamp, and the working current of the LED main light source is used for charging the energy storage battery under the starting of the alternating current starting signal ACON.
6. The inductive emergency control circuit of claim 1, wherein the LED primary light source of the luminaire is provided with a shorting switch; the emergency controller also uses the voltage BAT of the energy storage battery to supply power to the induction module under the condition that the power grid is detected and the lamp switch is closed, and opens the short-circuit switch when the induction signal SMON is received.
7. The inductive emergency control circuit of claim 6, wherein when the power grid is powered and the light switch is closed, the emergency controller controls the short circuit switch to be closed when the inductive signal SMON is not received, so that the output current of the light constant current controller is only used for charging the energy storage battery.
8. The inductive emergency control circuit of claim 7, wherein the emergency controller comprises a power grid and switch monitoring circuit, a NOR gate, and a power PMOS tube, the inductive emergency control circuit further comprising a first resistor, wherein,
the power grid and switch monitoring circuit is connected with an alternating current power grid through the lamp switch, and outputs an emergency starting signal EMON to an input end of the NOR gate under the condition that power failure of the power grid is detected and the lamp switch is closed; under the condition that the power supply of the power grid is detected and the lamp switch is closed, an alternating current starting signal ACON is output to the other input end of the NOR gate;
the output end of the NOR gate is connected with the grid electrode of the power supply PMOS tube;
the source electrode of the power supply PMOS tube is connected with the energy storage battery voltage BAT; the drain electrode is connected with the sensing module and connected with the LED emergency light source through the first resistor.
9. The inductive emergency control circuit of claim 8, wherein the emergency controller further comprises a NAND gate, a discharge PMOS tube, and an inverter, the inductive emergency control circuit further comprising a second resistor, wherein,
the power grid and switch monitoring circuit also outputs an emergency starting signal EMON to an input end of the NAND gate under the condition that the power grid power failure is detected and the lamp switch is closed;
the other input end of the NAND gate is connected with the induction signal SMON, and the output end of the NAND gate is connected with the grid electrode of the discharge PMOS tube;
the source electrode of the discharging PMOS tube is connected with the energy storage battery voltage BAT, and the drain electrode of the discharging PMOS tube is connected with an LED emergency light source through the second resistor;
and the input end of the inverter is connected with the sensing signal SMON, and the inverted output signal SMONB is used for controlling the opening and closing of the short-circuit switch.
10. The inductive emergency control circuit of claim 9, wherein the first resistor has a resistance that is greater than 5 times the resistance of the second resistor.
11. The inductive emergency control circuit of claim 9, wherein the emergency controller further comprises a charge management circuit, wherein,
the power grid and switch monitoring circuit outputs an alternating current starting signal ACON to the charging management circuit under the condition that the power grid is detected to supply power and a lamp switch is closed;
the charging management circuit monitors the voltage BAT of the energy storage battery under the start of the alternating current start signal ACON.
12. The induction emergency control circuit of claim 1, wherein the LED primary light source of the luminaire is provided with a series switch; the emergency controller also uses the voltage BAT of the energy storage battery to supply power to the induction module under the condition that the power grid is detected and the lamp switch is closed, and closes the series switch when the induction signal SMON is received.
13. The inductive emergency control circuit of claim 12, wherein the light fixture is provided with an AC/DC charging circuit connected to a power grid; and under the condition that the power grid supplies power and the lamp switch is closed, the emergency controller controls the series switch to be opened when the induction signal SMON is not received, and the AC/DC charging circuit is used for charging the energy storage battery.
14. A non-full time induction emergency lighting fixture comprising the induction emergency control circuit of any one of claims 1 to 5, a constant current controller, an LED primary light source, an energy storage battery, and an LED emergency light source, wherein the constant current controller provides a constant operating current to the LED primary light source.
15. A full-time induction emergency lighting fixture comprising an induction emergency control circuit as claimed in any one of claims 6 to 11, a constant current controller, an LED primary light source provided with a short circuit switch, an energy storage battery and an LED emergency light source, wherein the constant current controller provides a constant operating current for the LED primary light source.
16. A full-time induction emergency lighting fixture comprising an induction emergency control circuit as claimed in claim 12 or 13, a constant current controller, an LED primary light source provided with a series switch, an AC/DC charging circuit, an energy storage battery and an LED emergency light source, wherein the constant current controller provides a constant operating current for the LED primary light source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310331198.0A CN116347720A (en) | 2023-03-30 | 2023-03-30 | Induction emergency control circuit and lighting lamp |
| PCT/CN2024/073457 WO2024198673A1 (en) | 2023-03-30 | 2024-01-22 | Induced emergency control circuit and illumination lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310331198.0A CN116347720A (en) | 2023-03-30 | 2023-03-30 | Induction emergency control circuit and lighting lamp |
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| Publication Number | Publication Date |
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| CN116347720A true CN116347720A (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310331198.0A Pending CN116347720A (en) | 2023-03-30 | 2023-03-30 | Induction emergency control circuit and lighting lamp |
Country Status (2)
| Country | Link |
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| CN (1) | CN116347720A (en) |
| WO (1) | WO2024198673A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024198673A1 (en) * | 2023-03-30 | 2024-10-03 | 北京模电半导体有限公司 | Induced emergency control circuit and illumination lamp |
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| KR101222430B1 (en) * | 2010-11-05 | 2013-02-05 | 주식회사 쏘엘 | An guide emergency lamp control device using light emitting diode |
| CN102685994B (en) * | 2012-05-29 | 2014-05-14 | 耿波 | Emergency lamp power supply device |
| KR20140100233A (en) * | 2013-02-06 | 2014-08-14 | 주식회사 삼원하이텍 | Sensor lamp having and emergency lamp function |
| CN104853482B (en) * | 2015-04-03 | 2017-12-22 | 广州市番禺奥莱照明电器有限公司 | A kind of LED infrared induction lamps with emergency function |
| CN205071415U (en) * | 2015-11-10 | 2016-03-02 | 河南晟华合同能源管理有限公司 | Illumination and emergent function LED lamps and lanterns as an organic whole |
| CN205232501U (en) * | 2015-12-13 | 2016-05-11 | 重庆桑耐美光电科技有限公司 | Intelligent emergency light |
| CN105554959B (en) * | 2016-02-03 | 2017-09-12 | 申勇兵 | Intelligent control circuit for Multi-function lighting device |
| CN206865786U (en) * | 2017-05-23 | 2018-01-09 | 河北雷发照明灯具有限公司 | Intelligent led lamp control circuit |
| CN109219200A (en) * | 2018-11-14 | 2019-01-15 | 湖南众从视频加信息科技有限公司 | A kind of emergency lamp control circuit of power adjustable |
| CN212936258U (en) * | 2020-06-24 | 2021-04-09 | 北京模电半导体有限公司 | LED emergency lighting controller integrated circuit capable of selecting brightness and emergency lighting lamp |
| CN217957366U (en) * | 2022-05-18 | 2022-12-02 | 亮兮柯电气（嘉兴）有限公司 | Emergency induction control lighting circuit |
| CN219395104U (en) * | 2023-03-30 | 2023-07-21 | 北京模电半导体有限公司 | Induction emergency control circuit and lighting lamp |
| CN116347720A (en) * | 2023-03-30 | 2023-06-27 | 北京模电半导体有限公司 | Induction emergency control circuit and lighting lamp |
-
2023
- 2023-03-30 CN CN202310331198.0A patent/CN116347720A/en active Pending
-
2024
- 2024-01-22 WO PCT/CN2024/073457 patent/WO2024198673A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024198673A1 (en) * | 2023-03-30 | 2024-10-03 | 北京模电半导体有限公司 | Induced emergency control circuit and illumination lamp |
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| WO2024198673A1 (en) | 2024-10-03 |
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