WO2024198673A1 - Induced emergency control circuit and illumination lamp - Google Patents

Abstract

The present invention relates to the field of emergency illumination control circuits. Disclosed are an induced emergency control circuit and an illumination lamp. The control circuit comprises an emergency controller and an induction module, wherein when a person or a moving object is detected during power supply, the induction module outputs an induction signal SMON to the emergency controller; and the emergency controller is connected to an alternating-current power grid by means of a lamp switch, and when power failure of the power grid is detected and the lamp switch is switched on, a voltage BAT of a lamp energy storage battery is used to supply 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 a lamp LED emergency light source. By means of the present invention, a non-full-time induced emergency illumination lamp suitable for common use at home and a full-time induced emergency illumination lamp suitable for use in a public space are achieved. The present invention can greatly prolong the emergency illumination time, and is particularly suitable for areas with underdeveloped electric power infrastructures.

Description

Induction emergency control circuit and lighting fixtures

This application claims the priority of the Chinese patent application filed with the China Patent Office on March 30, 2023, with application number 202310331198.0 and invention name “Induction emergency control circuit and lighting fixture”, all contents of which are incorporated by reference in this application.

Technical Field

The present invention relates to the field of emergency lighting control circuits, and in particular to an induction emergency control circuit and a lighting fixture.

Background Art

As a new generation of lighting source, LED has been widely used. At present, there are two special LED lamps on the market. One is a lamp with induction function, which uses sound control, human infrared induction or radar module as the induction circuit; the other is an AC emergency lighting lamp containing energy storage elements (such as lithium batteries). The induction lamp has the function of turning on when people come and turning off when people leave. The basic function of AC emergency lighting lamps 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 mainstream induction lamp in the market is shown in Figure 1. In this circuit, the constant current controller 110 provides a constant working current for the LED load 102, and generally also provides a power supply SVDD for the induction module 120; the induction module 120 determines whether the LED load 102 is on or off. Usually, when the output signal SMON of the induction module 120 is high (people come), the LED load 102 is turned on (the light is on); when the output signal SMON is low (people leave), the LED load 102 is turned off (the light is off). The induction module 120 can be a voice control module, a human infrared induction module, or a radar induction module (3GHz, 5.8GHz, 10GHz, 24GHz, 60GHz, etc.).

FIG2 shows the circuit structure of an AC emergency lighting fixture in 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 operating current for the LED main light source load 102, which is also the charging current of the energy storage battery 202. At this time, inside the emergency controller 210, the power grid and switch monitoring circuit 211 outputs a high-level AC start signal ACON and a low-level emergency start signal EMON. ACON is 1 and EMON is 0, indicating that the lamp switch 101 is in a closed state (that is, the lamp is in the on state) and at the same time the AC power grid is supplying power normally, then the main light source 102 is on and the emergency light source 201 is off. The high-level ACON will start the charging management circuit 212 to monitor the voltage BAT of the energy storage battery 202 to prevent overcharging. Avoid damaging the energy storage battery 202. The low-level EMON is inverted by the inverter 214 to turn off the PMOS switch tube 213, and the emergency light source 201 will not work.

If the AC power grid fails to supply power normally, the main light source 102 will be turned off after the lamp switch 101 is closed; and the output signal EMON of the power grid and switch monitoring circuit 211 will change from low to high, and after passing through the inverter 214, the PMOS discharge tube 213 will be turned on, so that the energy storage battery 202 discharges the emergency light source 201. Due to the limited capacity of the energy storage battery, emergency lighting is provided for a limited time at this time. In 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 current through the LED emergency light source 201, as shown in the following formula (1).
I(LED ₂₀₁ )=(BAT-V _LED )/R(1).

Generally, the LED conduction voltage V _LED is 2.8V, R represents the resistance of the series current limiting resistor 203 , and the power switch PMOS tube 213 can be regarded as an ideal switch.

When the lamp is in the off state, that is, the switch 101 is disconnected, no matter whether the AC power grid is supplying power normally, the two output signals ACON and EMON of the power grid and switch monitoring circuit 211 are both low, and the main light source 102 is off, and the emergency light source 201 is also off.

The induction lamps shown in FIG1 have been widely used in many countries and are suitable for use in public spaces that require lighting 24 hours a day, such as corridors, toilets, stairwells, underground parking lots, etc.; the lights are turned on when people (or cars) come and turned off when people (or cars) leave, which has a considerable energy-saving effect and can also extend the life of the lamps.

The AC emergency lighting shown in Figure 2 is suitable for countries and regions with underdeveloped power infrastructure, such as Southeast Asia, South Asia, West Asia and Africa, where power outages are common, causing inconvenience to the lives and work of ordinary people. This type of AC emergency lighting has been used to a certain extent in the above-mentioned areas, mostly for ordinary civilian lighting, but is not suitable for use in public spaces that require 24-hour lighting.

Summary of the invention

The purpose of the present invention is to provide a new emergency lighting fixture that can support sensing functions in response to the above-mentioned limitations of AC emergency lighting fixtures in the prior art. Regardless of whether it is during normal power supply of the power grid or during power outage of the power grid, this lamp can meet the lighting needs of turning on the light when people (vehicles) come and turning off the light when people (vehicles) leave.

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 a sensing module, wherein the sensing module outputs a sensing signal to the emergency controller when a person or a moving object is detected during power supply. Signal SMON; the emergency controller is connected to the AC power grid via the lamp switch. When a power outage is detected in the grid and the lamp switch is closed, the voltage BAT of the lamp energy storage battery is used to power the sensing module, and when the sensing signal SMON is received, the energy storage battery is controlled to discharge the lamp LED emergency light source at high brightness.

According to a second aspect, a part-time induction emergency lighting fixture is provided, comprising the induction emergency control circuit, constant current controller, LED main light source, energy storage battery and LED emergency light source described in the first aspect, wherein the constant current controller provides a constant operating current for the LED main light source.

According to a third aspect, a full-time induction emergency lighting fixture is provided, comprising the induction emergency control circuit described in the first aspect, a constant current controller, an LED main light source provided with a short-circuit switch, a storage battery and an LED emergency light source, wherein the constant current controller provides a constant operating current for the LED main light source.

According to a fourth aspect, a full-time induction emergency lighting fixture is provided, comprising the induction emergency control circuit described in the first aspect, a constant current controller, an LED main light source provided with a series switch, an AC/DC charging circuit, a storage battery and an LED emergency light source, wherein the constant current controller provides a constant operating current for the LED main light source.

According to the induction emergency control circuit of the present invention, a part-time induction emergency lighting lamp suitable for ordinary household use and a full-time induction emergency lighting lamp suitable for use in public spaces are realized. Due to the introduction of the induction function, the lamp is turned on when a person (car) comes and turned off when a person (car) leaves. The present invention can greatly extend the emergency lighting time, and is particularly suitable for countries and regions with underdeveloped power infrastructure, and can improve the working and living conditions of people in these areas to a certain extent.

Instruction Manual

In order to better understand the present invention, the present invention is further described below with reference to embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

FIG1 shows the circuit structure of the current mainstream induction lamp in the market in the prior art;

FIG2 shows a circuit structure of an AC emergency lighting fixture in the prior art;

FIG3 is a circuit diagram of a part-time induction emergency lighting fixture according to an embodiment of the present invention;

FIG4 is a circuit 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 inventors consider first realizing a non-full-time induction emergency lamp suitable for ordinary household use, in which only the emergency light source has the induction function. When the AC power grid is normally powered, the main light source is only controlled by the lamp switch, just like ordinary lighting lamps, without the induction function. In the case of a power outage, the emergency light source is not only controlled by the lamp switch, but also by the induction module, so that the light turns on when people (cars) come and turns off (or dims) when people (cars) leave.

To work during emergency lighting, the sensing module requires a suitable power supply voltage. Since the lithium battery voltage is between 3V and 4.2V, it is suitable for directly powering the sensing module. Furthermore, except for the human infrared sensing module, which has an operating current of less than 1mA, the operating currents of other sensing modules (especially radar modules) are relatively large. For example, the operating currents of 5.8GHz or 10GHz radar sensing modules are close to 10mA or even larger. Such a large operating current determines that the sensing module cannot work all the time. It can only be powered on when it is needed, and the power supply should be completely stopped when it is not needed. Therefore, the sensing module requires a special power supply circuit. In addition, the output signals of various sensing modules are almost all high-level, indicating that a person or moving object is sensed, and low-level, indicating that a person or moving object is not sensed.

Referring to FIG3 , FIG3 is a circuit diagram of a non-full-time induction emergency lighting fixture according to an embodiment of the present invention. The induction emergency control circuit mainly includes an emergency controller 310 and an induction module 120. The induction module 120 is used to output an induction 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 via the lamp switch 101, and is used to use the voltage BAT of the energy storage battery 202 to power the induction module 120 when a power outage in the power grid is detected and the lamp switch 101 is closed; and when the induction signal SMON is received, the energy storage battery 202 is controlled to discharge the LED emergency light source 201 at high brightness.

Compared with the emergency controller 210 in FIG. 2 , the emergency controller 310 is provided with two more pins: the pin SVDD and the pin SMON. The pin SVDD supplies power to the sensing module 120, and the pin SMON receives the sensing output signal of the 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 end of the inverter 315; the drain is connected to the sensing module 120 through the pin SVDD, and is connected to the LED emergency light source 201 through the resistor 304. The PMOS tube 314 can be regarded as an ideal switch, so the power supply voltage of the sensing module 120 is approximately equal to BAT. The source of the discharge PMOS tube 213 is also connected to the energy storage battery voltage BAT, the gate is connected to the output end of the NAND gate 316, and the drain is connected to the emergency light source 201 through the resistor 203.

During the normal power supply period of the power grid, after the lamp switch 101 is closed, the AC/DC constant current controller 110 starts to work and provides a constant working current for the LED main light source 102. At the same time, the emergency start signal EMON output by the internal power grid and switch monitoring circuit 211 of the emergency controller 310 is at a low level, and the power supply PMOS tube 314 is turned off after the inverter 315, and the power supply to the sensing module 120 is stopped. The power supply SVDD of the sensing module 120 is at a low level, and its output signal SMON will also be at a low level. The low level SMON and EMON are logically operated by the NAND gate 316 to obtain a high level, which means that the discharge PMOS tube 213 is also in a closed state, and the emergency light source 201 will not emit light.

In this stage, the grid and switch monitoring circuit 211 also outputs an AC start signal ACON to the charging management circuit 212. The charging management circuit 212 is connected to the main light source 102, and uses the working current of the main light source 102 to charge the energy storage battery 202 when activated by the AC start signal ACON.

During the period when the power grid stops supplying power, 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 changes from a low level to a high level, and after passing through the inverter 315, the power supply PMOS tube 314 is turned on to supply power to the sensing module 120, and the power supply voltage is equal to the energy storage battery voltage BAT. During this period, if the sensing module 120 detects a person or other moving object, its output signal SMON will change from a low level to a high level. The high level SMON and the high level EMON perform a logical operation and a non-AND operation to obtain a 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 lighting.

In this stage, when the output signal SMON of the sensing module 120 is low, the resistance value of the resistor 304 determines the brightness of the emergency light source 201, as shown in the following formula (2). Usually, the brightness is low at this time, which is an energy-saving mode. The larger the resistance value of the resistor 304, the lower the brightness; if the resistor 304 is directly removed (the resistance value is infinite), 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 resistance values of the resistor 304 and the resistor 203 jointly determine the brightness of the emergency light source 201, as shown in the following formula (3). At this time, the brightness reaches the maximum. Generally, the resistance value of the resistor 304 is more than 5 times the resistance value of the resistor 203, so it can be approximately considered that the brightness is only determined by the resistor 203. In other words, the resistor 304 determines the low brightness in the energy-saving mode after the person leaves (the light is dimmed when the person leaves), and the high brightness after the person comes is determined by the resistor 203. If it is required that the light must be turned off after the person leaves, the purpose can be achieved by removing the resistor 304.
I(LED ₂₀₁ )=(BAT-V _LED )/(R ₃₀₄ //R ₂₀₃ )≈(BAT-V _LED )/R ₂₀₃ (3).

When the lamp switch 101 is disconnected, no matter the power grid is supplying power normally or in a power outage, the internal signals ACON and EMON of the emergency controller 310 are both low, the discharge PMOS tube 213 and the power supply PMOS tube 314 are both in the off state, and the emergency light source 201 and the main light source 102 will not emit light.

Next, we will implement full-time induction emergency lighting fixtures suitable for use in public spaces. Both the main light source and the emergency light source of this type of lighting fixture have induction functions. That is to say, during the normal power supply of the AC power grid, the main light source is also controlled by the induction module, providing the induction lighting function of turning on the light when people come and turning off the light when people leave. At this time, the emergency light source is turned off. After the AC power grid stops supplying power, the main light source is turned off, and the induction module controls the emergency light source for emergency lighting, which also provides the induction lighting function of turning on the light when people come and turning off the light when people leave. Since it is used in public spaces that require 24-hour lighting, if the emergency light source does not have an induction function after a power outage, the emergency lighting time will be very limited, usually only two or three hours, which is obviously not enough. Introducing the induction function to realize the lights turning on when people (cars) come and turning off when people (cars) leave can greatly extend the emergency lighting time.

The difficulty faced in realizing full-time induction emergency lighting fixtures is how to continue to charge the energy storage battery after the lights go out when people (cars) leave, that is, after the main light source goes out, when the power grid is powered normally. It is very important to continue charging the energy storage battery. One reason is that in public spaces that provide lighting 24 hours a day, the lighting time generally accounts for less than 10%. If it is only charged during this 10% lighting time, it may take more than 5 days to fully charge the energy storage battery; another reason is that the induction module may use a radar with a large working current (10mA or greater). If it cannot be charged during a long period of light outage, the working current of this radar will continue to consume the power of the energy storage battery, and the power of the energy storage battery may be exhausted. Regardless of whether the light is on or off, if it can be charged all the time, the energy storage battery can be fully charged in about half a day. In countries and regions where power outages are common, it is necessary to fully charge the battery in time.

One way of charging the energy storage battery adopted by the present invention is to short-circuit the main light source 102. Referring to Figure 4, Figure 4 is a circuit structure 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; when the grid is powered and the lamp switch 101 is closed, the emergency controller 510 controls the short-circuit switch 501 to close through the inverted induction signal SMONB when the induction signal SMON is not received, so that the main light source 102 is short-circuited and no longer emits light. In this way, the current output by the front-stage AC/DC constant current controller 110 charges the subsequent energy storage battery 202 through the short-circuit switch 501, that is, the front-stage constant current controller 110 only has 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 when it detects that the grid is supplying power and the lamp switch 101 is closed, and disconnects the short-circuit switch 501 when receiving the sensing signal SMON, and the main light source 102 emits light.

Compared with FIG. 3 , in the induction emergency control circuit of FIG. 4 , except that the inverter 315 in the emergency controller of FIG. 3 is replaced by a NOR gate 415 and an inverter 517 is added, the rest of the circuit structure is similar to that of FIG. 3 .

The working process of the circuit in Figure 4 is described in detail below. During the normal power supply period of the power grid, after the lamp switch 101 is closed, the AC/DC constant current controller 110 starts to work and provides a constant working current for the subsequent circuit. At this time, the AC start signal ACON inside the emergency controller 510 is at a high level. Under the activation of this signal, the charging management circuit 212 monitors the voltage BAT of the energy storage battery 202 to prevent overcharging; at the same time, the high-level ACON turns on the power supply PMOS tube 314 after the NOR gate 415 to power the sensing module 120, and provides a low-brightness working current for the emergency light source 201 through the resistor 304. Here, the above formula (2) also applies. The internal signal EMON is at a low level, which is sent to the NAND gate 316 to generate a high level, turning off the discharge PMOS tube 213.

In this stage, after the sensing module 120 works normally, when there is no person (car), its output signal SMON is low level, and the inverter 517 generates a high level SMONB to turn on the short-circuit switch 501, and the main light source 102 is short-circuited and does not emit light, that is, the light is off (or dimmed) when the person (car) leaves, 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 high level, and the inverter 517 generates a low level SMONB to turn off the short-circuit switch 501, and the output current of the front-stage AC/DC constant current controller 110 will pass through the main light source 102 to realize that the light is on when a person (car) comes.

During the period when the power grid stops supplying power, 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 changes from a low level to a high level, and after passing through the NOR gate 415, the power supply PMOS tube 314 is turned on to supply power to the sensing module 120, and the power supply voltage is equal to the battery voltage BAT; and the low brightness working current is provided to the emergency light source 201 through the resistor 304, and the above formula (2) is also applicable here.

During this period, if the sensing module 120 detects a person or other moving object, its output signal SMON will change from low level to high level, and the high level SMON and the high level EMON will be ANDed to obtain a low level, the discharge PMOS tube 213 will be turned on, and the emergency light source 201 will emit light to provide emergency lighting. When the person (car) leaves, the output signal SMON of the sensing module 120 is low, Similarly, the brightness of the emergency light source 201 is determined by the resistor 304, as shown in the above formula (2), and the energy-saving mode is in this case. When the output signal SMON of the sensing module 120 is high, the brightness of the emergency light source 201 is determined by the resistor 304 and the resistor 203 together, and the above formula (3) is applicable. At this time, the brightness reaches the maximum. The resistance value of the resistor 304 can still be more than 5 times the resistance value of the resistor 203, so it is approximately considered that the brightness is only determined by the resistor 203. If it is required that the light must be turned off after a person (car) leaves, the resistor 304 can be removed.

When the lamp switch 101 is disconnected, no matter the grid is supplying power normally or in a power outage, the internal signals ACON and EMON of the emergency controller 510 are both low, the discharge PMOS tube 213 and the power supply PMOS tube 314 are both turned off, and neither the emergency light source 201 nor the main light source 102 emits light.

According to the present invention, another way to charge the energy storage battery is to disconnect the main light source. Referring to Figure 5, Figure 5 is a circuit structure diagram of a full-time induction emergency lighting fixture according to another embodiment of the present invention. The main light source 102 is provided with a series switch 401. Because after the main light source 102 is disconnected, the output of the front-stage AC/DC constant current controller 110 is no-load, it will enter the light-load hiccup mode and cannot provide enough energy to charge the subsequent energy storage battery 202, so an additional AC/DC charging circuit 420 is required. The AC/DC charging circuit 420 is usually a constant voltage or constant current control circuit for converting AC to low-voltage DC. Compared with Figure 4, the induction emergency control circuit of Figure 5 lacks an inverter 517, and the remaining circuit structure is similar to Figure 4. In general, the circuit of Figure 5 is more complex and more expensive than that of Figure 4.

In the example of FIG5 , when the emergency controller 410 detects that the grid is supplying power and the lamp switch 101 is closed, the voltage BAT of the energy storage battery 202 is used to supply power to the sensing module 120, and when the sensing signal SMON is received, the series switch 401 is closed, and the main light source 102 emits light; when the emergency controller 410 does not receive the sensing signal SMON, the series switch 401 is controlled to be disconnected, and the AC/DC charging circuit 420 is used to charge the energy storage battery 202. The specific working process of the circuit of FIG5 is similar to that of FIG4 , and will not be repeated here.

It is obvious that the present invention described herein may be subject to many variations which cannot be considered as departing from the spirit and scope of the present invention. Therefore, all variations obvious to those skilled in the art are intended to be included within the scope of the appended claims.

Claims (16)

An induction emergency control circuit is used in an emergency lighting fixture. The induction emergency control circuit includes an emergency controller and an induction module, wherein: A sensing module, which 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 to the AC power grid via the lamp switch. When a power outage in the power grid is detected and the lamp switch is closed, the voltage BAT of the lamp energy storage battery is used to power the sensing module, and when the sensing signal SMON is received, the energy storage battery is controlled to discharge the lamp LED emergency light source at high brightness. The inductive emergency control circuit according to claim 1 is characterized in that the emergency controller comprises a power grid and switch monitoring circuit, an inverter and a power supply PMOS tube; the inductive emergency control circuit also comprises a first resistor; The grid and switch monitoring circuit is connected to the AC grid via the lamp switch, and when a grid power outage is detected and the lamp switch is closed, an emergency start signal EMON is output to the inverter; An inverter, the output end of which is connected to the gate of the power supply PMOS tube; A power supply PMOS tube, with a source connected to the energy storage battery voltage BAT, a drain connected to the sensing module, and connected to the LED emergency light source via the first resistor. The induction emergency control circuit according to claim 2 is characterized in that the emergency controller further comprises a NAND gate and a discharge PMOS tube, and the induction emergency control circuit further comprises a second resistor, wherein the grid and switch monitoring circuit also outputs an emergency start signal EMON to an input terminal of the NAND gate when detecting that the grid is out of power and the lamp switch is closed; The other input end of the NAND gate is connected to the sensing signal SMON, and the output end thereof is connected to the gate of the discharge PMOS tube; The source of the discharge PMOS tube is connected to the energy storage battery voltage BAT, and the drain of the discharge PMOS tube is connected to the LED emergency light source via the second resistor. The induction emergency control circuit as claimed in claim 3 is characterized in that the resistance of the first resistor is more than 5 times the resistance of the second resistor. The induction emergency control circuit according to claim 3 is characterized in that the emergency controller also includes a charging management circuit, wherein the grid and switch monitoring circuit detects that the grid When power is supplied and the lamp switch is closed, an AC start signal ACON is output to the charging management circuit; The charging management circuit is connected to the LED main light source of the lamp, and when activated by the AC start signal ACON, the working current of the LED main light source is used to charge the energy storage battery. The induction emergency control circuit as described in claim 1 is characterized in that the LED main light source of the lamp is provided with a short-circuit switch; the emergency controller also uses the voltage BAT of the energy storage battery to power the induction module when it detects that the grid is powered and the lamp switch is closed, and disconnects the short-circuit switch when receiving the induction signal SMON. The induction emergency control circuit as described in claim 6 is characterized in that, when the grid is powered and the lamp switch is closed, the emergency controller controls the short-circuit switch to close when the induction signal SMON is not received, so that the output current of the lamp constant current controller is only used to charge the energy storage battery. The inductive emergency control circuit according to claim 7 is characterized in that the emergency controller includes a power grid and switch monitoring circuit, an NOR gate and a power supply PMOS tube, and the inductive emergency control circuit also includes a first resistor, wherein the power grid and switch monitoring circuit is connected to the AC power grid via the lamp switch, and when a power outage is detected in the power grid and the lamp switch is closed, an emergency start signal EMON is output to one input end of the NOR gate; when power supply is detected in the power grid and the lamp switch is closed, an AC start signal ACON is output to the other input end of the NOR gate; A NOR gate, the output end of which is connected to the gate of the power supply PMOS tube; A power supply PMOS tube, with a source connected to the energy storage battery voltage BAT; a drain connected to the sensing module, and connected to the LED emergency light source via the first resistor. The induction emergency control circuit according to claim 8 is characterized in that the emergency controller further comprises a NAND gate, a discharge PMOS tube and an inverter, and the induction emergency control circuit further comprises a second resistor, wherein the grid and switch monitoring circuit also outputs an emergency start signal EMON to an input terminal of the NAND gate when detecting that the grid is out of power and the lamp switch is closed; The other input end of the NAND gate is connected to the sensing signal SMON, and the output end thereof is connected to the gate of the discharge PMOS tube; The source of the discharge PMOS tube is connected to the energy storage battery voltage BAT, and the drain thereof is connected to the LED emergency light source via the second resistor; The inverter has an input end connected to the sensing signal SMON, and an inverted output signal SMONB is used to control the opening and closing of the short-circuit switch. The induction emergency control circuit as claimed in claim 9, characterized in that the resistance of the first resistor is more than 5 times the resistance of the second resistor. The induction emergency control circuit according to claim 9, characterized in that the emergency controller further comprises a charging management circuit, wherein the grid and switch monitoring circuit outputs an AC start signal ACON to the charging management circuit when detecting that the grid is supplying power and the lamp switch is closed; The charging management circuit monitors the voltage BAT of the energy storage battery when activated by the AC startup signal ACON. The induction emergency control circuit as described in claim 1 is characterized in that the LED main light source of the lamp is provided with a series switch; the emergency controller also uses the voltage BAT of the energy storage battery to power the induction module when it detects that the grid is powered and the lamp switch is closed, and closes the series switch when receiving the induction signal SMON. The induction emergency control circuit as described in claim 12 is characterized in that the lamp is provided with an AC/DC charging circuit connected to the power grid; when the power grid is powered and the lamp switch is closed, the emergency controller controls the series switch to be disconnected when the induction signal SMON is not received, and uses the AC/DC charging circuit to charge the energy storage battery. A part-time induction emergency lighting fixture, comprising the induction emergency control circuit according to any one of claims 1 to 5, a constant current controller, an LED main light source, an energy storage battery and an LED emergency light source, wherein the constant current controller provides a constant operating current for the LED main light source. A full-time induction emergency lighting fixture, comprising an induction emergency control circuit as described in any one of claims 6 to 11, a constant current controller, an LED main 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 main light source. A full-time induction emergency lighting fixture, comprising the induction emergency control circuit as claimed in claim 12 or 13, a constant current controller, an LED main light source 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 main light source.