CN213213906U - Emergency lamp of timing self-checking - Google Patents

Abstract

The utility model discloses an emergency light of timing self-checking, include: the emergency control system comprises an LED main loop, a first controlled switch, an emergency battery, a clock single chip microcomputer and an indicator light; the input end of the first controlled switch is connected with the emergency battery, and the output end of the first controlled switch is connected with the LED main loop; the clock single chip microcomputer is connected to a power supply loop of the emergency battery through a first pin so as to detect the voltage of the emergency battery; the clock single chip microcomputer is also connected to the LED main loop through a second pin, is connected with a controlled end of the first controlled switch through a third pin, and outputs a high level to the third pin at fixed time in a first preset period so as to detect the voltage of the LED main loop; the clock single chip microcomputer is also connected with the indicating lamp and outputs high level or low level to the indicating lamp to control the indicating lamp to work when detecting the fault of a power supply loop or an LED main loop of the emergency battery. The utility model discloses except can the automatic timing detection circuit trouble, can also regularly automatic to battery charge-discharge, extension battery life has extensive application scene.

Description

Emergency lamp of timing self-checking

Technical Field

The utility model relates to an emergency light fault detection technical field especially relates to an emergency light of regular self-checking.

Background

The fire-fighting emergency lighting system mainly comprises accident emergency lighting, an emergency exit sign and an indicator light, and is arranged for guiding trapped people to evacuate or developing fire-fighting rescue actions after a normal lighting power supply is cut off when a fire disaster happens. However, in daily inspection, the unit has many problems in the process of selecting, installing and using the fire-fighting emergency lamp. Therefore, the power supply control mode and the wiring mode of the emergency lighting system are reasonably selected, the daily maintenance work is well done, and the function of the fire-fighting emergency lighting system is directly influenced. In daily life, the examination is performed frequently to prevent the disease.

However, it is common to find in routine supervision and inspection that emergency lighting fixtures cannot be used properly due to incorrect wiring. The emergency lamp used for a long time needs to be periodically checked for performance, a continuous switch test is carried out every half month or one month to check the circuit conversion and the emergency function of the battery and discharge to prolong the service life of the battery, manual operation is needed at regular time, the inspection or discharge time is easily missed or omitted, and the battery is not durable or the emergency use cannot achieve the due emergency effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a timing self-checking's emergency light to solve current emergency light and need artifical periodic performance inspection, miss easily or omit inspection or discharge time, cause the problem that the battery is not durable or emergency use can not reach due emergent effect.

In order to achieve the above object, an embodiment of the present invention provides an emergency light for timing self-checking, including: the emergency control system comprises an LED main loop, a first controlled switch, an emergency battery, a clock single chip microcomputer and an indicator light;

the input end of the first controlled switch is connected with the emergency battery, and the output end of the first controlled switch is connected with the LED main loop;

the clock single chip microcomputer is connected to a power supply loop of the emergency battery through a first pin so as to detect the voltage of the emergency battery;

the clock single chip microcomputer is also connected to the LED main loop through a second pin, is connected with a controlled end of the first controlled switch through a third pin, and outputs a high level to the third pin at fixed time in a first preset period so as to detect the voltage of the LED main loop;

the clock single chip microcomputer is also connected with the indicator lamp and outputs high level or low level to the indicator lamp to control the indicator lamp to work when detecting that the power supply loop of the emergency battery or the LED main loop is in fault.

In one embodiment, the clock single-chip microcomputer further comprises a second controlled switch, a controlled end of the second controlled switch is connected with the third pin of the clock single-chip microcomputer, an input end of the second controlled switch is connected with the controlled end of the first controlled switch, and an output end of the second controlled switch is grounded.

In one embodiment, the first controlled switch is a first P-type MOS transistor, a drain of the first P-type MOS transistor is an input terminal of the first controlled switch, a source is an output terminal of the first controlled switch, and a gate is a controlled terminal of the first controlled switch;

the second controlled switch is a first NPN triode, a collector of the first NPN triode is an input end of the second controlled switch, an emitter of the first NPN triode is an output end of the second controlled switch, and a base of the first NPN triode is a controlled end of the second controlled switch.

In one embodiment, the LED lighting circuit further comprises a third controlled switch, wherein an input end of the third controlled switch is connected with an output end of the second controlled switch, and an output end of the third controlled switch is connected with the LED main loop;

the clock single chip microcomputer is also connected with a controlled end of the third controlled switch through a fourth pin and outputs high level to the third pin and the fourth pin at fixed time in a second preset period so that the emergency battery supplies power to the LED main loop; and when the discharge time that the voltage value of the first pin is larger than the first reference value is detected to be larger than the preset time, outputting a high level or a low level to the indicator lamp to control the indicator lamp to work.

In one embodiment, the emergency battery further comprises a fourth controlled switch, wherein the input end of the fourth controlled switch is connected with a direct-current power supply, the output end of the fourth controlled switch is connected with the emergency battery, and the controlled end of the fourth controlled switch is connected with the clock single chip microcomputer through a fifth pin;

when the clock single chip microcomputer detects that the voltage of the sixth pin is at a high level, the clock single chip microcomputer outputs the high level to the fifth pin so as to charge the emergency battery; and outputting a low level to the fifth pin when detecting that the voltage value of the first pin is greater than a second reference value.

In one embodiment, the third controlled switch is a first N-type MOS transistor, a drain of the first N-type MOS transistor is an input terminal of the third controlled switch, a source is an output terminal of the third controlled switch, and a gate is a controlled terminal of the third controlled switch;

the fourth controlled switch is a second P-type MOS tube, a collector of the second P-type MOS tube is an input end of the fourth controlled switch, an emitter is an output end of the fourth controlled switch, and a base is a controlled end of the fourth controlled switch.

In one embodiment, the clock single-chip microcomputer further comprises a fifth controlled switch, wherein the input end of the fifth controlled switch is connected with the controlled end of the fourth controlled switch, the output end of the fifth controlled switch is grounded, and the controlled end is connected with the clock single-chip microcomputer through the fifth pin.

In one embodiment, the fifth controlled switch is a second NPN transistor, a collector of the second NPN transistor is an input terminal of the fifth controlled switch, an emitter of the second NPN transistor is an output terminal of the fifth controlled switch, and a base of the second NPN transistor is a controlled terminal of the fifth controlled switch.

In one embodiment, the clock single chip microcomputer further outputs a high level to the third pin and the fourth pin when detecting that the voltage of the sixth pin is a low level, so that the emergency battery supplies power to the LED main loop; and outputting a low level to the third pin when detecting that the voltage value of the first pin is greater than the first reference value.

In one embodiment, the indicator light comprises a first indicator light and a second indicator light;

the clock single chip microcomputer is respectively connected with the first indicator light and the second indicator light through a seventh pin and an eighth pin, and controls the first indicator light and the second indicator light to work when the emergency battery or the LED main loop is detected to be in fault.

To sum up, compare in prior art, the utility model discloses timing self-checking's emergency light utilizes timing function through built-in clock singlechip, realizes the self-checking. Specifically, the clock single chip microcomputer is set with a first preset period and a second preset period. Every interval of a first preset period, the clock single chip microcomputer outputs a high level to the third pin, and therefore the fault condition of the LED main loop is detected; and the voltage of the emergency battery is detected through a first pin connected to a power supply loop of the emergency battery, so that the fault condition of the emergency battery is detected, and then the indication lamp is used for reminding. Every second preset period, the clock single chip microcomputer outputs high level to the third pin and the fourth pin so that the emergency battery supplies power to the LED main loop, whether the discharge time reaches the standard is calculated, and then the indicator lamp is used for reminding. Therefore, the utility model discloses timing self-checking's emergency light can automatic timing detection line fault. Furthermore, the utility model discloses the emergency light of timing self-checking can also regularly automatic charge-discharge to the battery, extension battery life has extensive application scene.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of an emergency light with timing self-checking provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of a clock single-chip microcomputer circuit provided in an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of an emergency light with timing self-check provided in an embodiment of the present invention;

fig. 4 is a schematic diagram of a circuit for converting ac power to dc power according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.

It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, fig. 1 and 2 are a schematic circuit diagram of an emergency light for timing self-inspection and a schematic circuit diagram of a clock single chip microcomputer according to an embodiment of the present invention.

As shown in fig. 1 and fig. 2, the embodiment of the utility model provides a timing self-checking's emergency light, include: the emergency battery control system comprises an LED main loop, a first controlled switch, an emergency battery IN1, a clock single chip microcomputer and an indicator light.

The input end of the first controlled switch is connected with the emergency battery IN1, and the output end of the first controlled switch is connected with the LED main loop.

The clock single chip microcomputer is connected to a power supply loop of the emergency battery IN1 through a first PIN PIN15 to detect the voltage of the emergency battery IN 1. The clock single chip microcomputer is also connected to the LED main loop through a second PIN PIN14, is connected with the controlled end of the first controlled switch through a third PIN PIN6, and outputs a high level to the third PIN PIN6 at fixed time according to a first preset period so as to detect the voltage of the LED main loop.

The clock single chip microcomputer is also connected with the indicator lamp and outputs high level or low level to the indicator lamp to control the indicator lamp to work when detecting the fault of a power supply loop or an LED main loop of the emergency battery IN 1.

The utility model discloses timing self-checking's emergency light utilizes timing function through built-in clock singlechip, realizes the self-checking. It should be noted that, the time length is timed through setting for the clock singlechip to reaching the timing time, the singlechip sends out high level or low level automatically, and it is the function that singlechip is commonly used in the prior art to carry out signal control or detection to the controlled object, the utility model discloses do not involve the improvement to singlechip internal control method.

In the above embodiment, the emergency lamp can automatically detect the line fault at regular time.

Specifically, the emergency battery IN1 is connected to the LED main circuit through a first controlled switch (P-type MOS transistor Q4 shown IN fig. 1). IN discharge emergency, the emergency battery IN1 can directly supply power to the LED main loop.

The clock singlechip is connected with the power supply loop of the emergency battery IN1 through a first PIN PIN15 to detect the voltage of the emergency battery IN1, so that the open-circuit and short-circuit conditions of the emergency battery IN1 are detected IN real time, the power supply of the PIN15 is at a high level IN an idle state when the emergency battery is open, and the PIN15 is at a low level when the emergency battery is short-circuited.

IN addition, the clock single chip microcomputer is connected with the LED main loop through a second PIN PIN14 and connected with a controlled end of the first controlled switch through a third PIN PIN6, so that the loop between the emergency battery IN1 and the LED main loop is switched on or off by controlling the on and off of the first controlled switch. The clock single chip microcomputer also outputs a high level to a third PIN PIN6 at a first preset period timing so as to detect the voltage of the LED main loop. When the third PIN PIN6 inputs a high level, the first controlled switch is switched on, the single chip microcomputer detects the open-circuit and short-circuit conditions of the LED main circuit through the second PIN PIN14, the voltage of the second PIN PIN14 is a low level when the LED main circuit is open, and the voltage of the second PIN PIN14 is a high level when the LED main circuit is short-circuited.

Furthermore, the clock single chip is also connected with an indicator light (as shown in fig. 3, the clock single chip is respectively connected with a green indicator light and a red indicator light through a PIN10 and a PIN 11). When the clock single chip microcomputer detects that a power supply loop or an LED main loop of the emergency battery IN1 has a fault, a high level or a low level is output to the indicator lamp, so that the indicator lamp is controlled to work, for example, the indicator lamp is turned on or turned off or flashes at intervals, and a maintainer is reminded that the current LED emergency lamp loop has a fault.

In one embodiment, the first predetermined period is 7 days.

And setting the first preset period of the clock singlechip to be 7 days. Every 7 days, the clock single chip microcomputer actively outputs high level to the third PIN PIN6 so as to detect the fault condition of the LED main loop.

In one embodiment, the emergency lamp further comprises a second controlled switch, a controlled end of the second controlled switch is connected with the third PIN PIN6 of the clock single chip microcomputer, an input end of the second controlled switch is connected with a controlled end of the first controlled switch, and an output end of the second controlled switch is grounded.

Referring to fig. 1, in one embodiment, the first controlled switch is a first P-type MOS transistor Q4, a drain of the first P-type MOS transistor Q4 is an input terminal of the first controlled switch, a source is an output terminal of the first controlled switch, and a gate is a controlled terminal of the first controlled switch. The second controlled switch is a first NPN triode Q3, the collector of the first NPN triode Q3 is the input terminal of the second controlled switch, the emitter is the output terminal of the second controlled switch, and the base is the controlled terminal of the second controlled switch.

In a specific embodiment, when 7 days of week check whether the main loop of the LED is open-circuited or short-circuited, the single chip microcomputer outputs PIN6 high level, the P-type MOS tube Q4 is conducted, the single chip microcomputer detects the open-circuited and short-circuited of the LED through PIN14, PIN14 voltage is low level when the open-circuited, and PIN14 is high level when the short-circuited.

Of course, in other embodiments, the first controlled switch and the second controlled switch may also be other electronic components, and are not limited herein.

Referring to fig. 3, fig. 3 is a schematic circuit diagram of an emergency light for timing self-inspection according to an embodiment of the present invention, which illustrates an LED main circuit and an indicator light circuit. In one embodiment, the emergency lamp further comprises a third controlled switch, wherein the input end of the third controlled switch is connected with the output end of the second controlled switch, and the output end of the third controlled switch is connected with the LED main loop. The clock single chip microcomputer is also connected with a controlled end of the third controlled switch through a fourth PIN PIN12, and outputs high level to a third PIN PIN6 and a fourth PIN PIN12 at fixed time according to a second preset period, so that the emergency battery IN1 supplies power for the LED main loop; and when the discharging time that the voltage value of the first PIN PIN15 is greater than the first reference value is detected to be greater than the preset time, outputting a high level or a low level to the indicator light to control the indicator light to work.

In this embodiment, the emergency light can also implement discharge duration timing detection. When the charging duration of the continuous charging of the emergency battery IN1 reaches a second preset period, the clock single chip microcomputer enters an automatic detection program and actively outputs a high level to the third PIN PIN6 and the fourth PIN PIN12, so that the emergency battery IN1 is discharged through the LED main loop. The clock single chip microcomputer detects the voltage of the emergency battery IN1 through the first PIN PIN 15. When the voltage value of the first PIN PIN15 is greater than the first reference value, the emergency battery IN1 continues to discharge; when the voltage value of the first PIN15 is less than or equal to the first reference value, the emergency battery IN1 stops discharging.

The clock single chip microcomputer calculates whether the discharge time reaches the standard or not and outputs a corresponding high level or low level to the indicating lamp, so that the indicating lamp is controlled to work, and a maintainer is reminded that a current LED emergency lamp loop breaks down.

In one embodiment, the first reference value is 5.6V. When the voltage value of the first PIN PIN15 is larger than 5.6V, the emergency battery IN1 continues to discharge; when the voltage value of the first PIN15 is less than or equal to 5.6V, the emergency battery IN1 stops discharging.

In one embodiment, the second predetermined period is 90 days.

Referring to fig. 2 and 3, IN one embodiment, the emergency lamp further includes a fourth controlled switch, an input end of the fourth controlled switch is connected to the dc power supply, an output end of the fourth controlled switch is connected to the emergency battery IN1, and a controlled end of the fourth controlled switch is connected to the clock single chip microcomputer through a fifth PIN 5. When detecting that the voltage of the sixth PIN PIN9 is at a high level, the clock single chip microcomputer outputs the high level to the fifth PIN PIN5 so as to charge the emergency battery IN 1; and outputs a low level to the fifth PIN5 when detecting that the voltage value of the first PIN15 is greater than the second reference value.

IN this embodiment, the emergency light can also automatically charge the emergency battery IN 1. The emergency battery IN1 is connected with the direct-current power supply through the fourth controlled switch, and the clock single chip microcomputer is connected with the controlled end of the fourth controlled switch through the fifth PIN PIN5, so that the loop between the emergency battery IN1 and the direct-current power supply is switched on or off by controlling the fourth controlled switch.

Referring to fig. 4, fig. 4 is a schematic diagram of a circuit for converting ac power to dc power according to an embodiment of the present invention. When the mains supply is normally powered, the clock single chip microcomputer detects that the voltage of the sixth PIN PIN9 is high level, at the moment, the clock single chip microcomputer outputs high level to the fifth PIN PIN5, the fourth controlled switch is turned on, the emergency battery IN1 is charged, the clock single chip microcomputer detects the voltage of the emergency battery IN1 through the fifth PIN PIN15, the charging is continued when the voltage is smaller than or equal to the second reference value, and the fifth PIN PIN5 low level is output when the voltage is larger than the second reference value, so that the fourth controlled switch is turned off, and the emergency battery IN1 stops charging.

Referring to fig. 3, in an embodiment, the third controlled switch is a first N-type MOS transistor Q6, a drain of the first N-type MOS transistor Q6 is an input terminal of the third controlled switch, a source is an output terminal of the third controlled switch, and a gate is a controlled terminal of the third controlled switch. The fourth controlled switch is a second P-type MOS transistor Q1, the collector of the second P-type MOS transistor Q1 is the input terminal of the fourth controlled switch, the emitter is the output terminal of the fourth controlled switch, and the base is the controlled terminal of the fourth controlled switch.

Of course, in other embodiments, the third controlled switch and the fourth controlled switch may also be other electronic components, and are not limited herein.

In one embodiment, the emergency lamp further comprises a fifth controlled switch, the input end of the fifth controlled switch is connected with the controlled end of the fourth controlled switch, the output end of the fifth controlled switch is grounded, and the controlled end is connected with the clock single chip microcomputer through a fifth PIN PIN 5.

Referring to fig. 3, in an embodiment, the fifth controlled switch is a second NPN transistor Q2, a collector of the second NPN transistor Q2 is an input terminal of the fifth controlled switch, an emitter is an output terminal of the fifth controlled switch, and a base is a controlled terminal of the fifth controlled switch.

Of course, in other embodiments, the fifth controlled switch may also be other electronic components, and is not limited herein.

In one embodiment, the second reference value is 7.2V.

Referring to fig. 4, when the mains supply is powered normally, when the LN is switched on, the single chip microcomputer PIN9 detects a high level, outputs a PIN5 high level, the transistor Q2 is turned on, the MOS transistor Q1 is turned on, the IN1 battery is charged, the single chip microcomputer detects the battery voltage through the PIN15, the battery voltage is continuously charged when the voltage is less than 7.2V, and when the voltage is greater than 7.2V, the PIN5 low level is output, the transistor Q2 is cut off, the MOS transistor Q1 is cut off, and the charging is.

IN one embodiment, when detecting that the voltage of the sixth PIN PIN9 is low level, the clock single chip microcomputer outputs high level to the third PIN PIN6 and the fourth PIN PIN12, so that the emergency battery IN1 supplies power for the LED main loop; and outputs a low level to the third PIN6 when detecting that the voltage value of the first PIN15 is greater than the first reference value.

IN this embodiment, the emergency light also automatically emergency discharges emergency battery IN 1.

Referring to fig. 4, IN a specific embodiment, when the mains power is turned off when the LN is turned on, the single chip PIN9 detects a low level, the output PIN6 and the PIN12 are at a high level, the transistor Q3 is turned on, the MOS transistor Q4 is turned on, the MOS transistor Q6 is turned on, the IN1 battery discharges through the LED lighting main circuit, the single chip detects the battery voltage through the PIN15, the battery voltage continues to discharge when the voltage is greater than 5.6V, and the output PIN6 is at a low level when the voltage is less than 5.6V, the transistor Q3 is turned off, and the MOS transistor Q4 is turned off.

In one embodiment, the indicator lights include a first indicator light and a second indicator light. The clock single chip microcomputer is respectively connected with the first indicator lamp and the second indicator lamp through a seventh PIN PIN10 and an eighth PIN PIN11, and when the fault of the emergency battery IN1 or the LED main circuit is detected, the first indicator lamp and the second indicator lamp are respectively controlled to work.

In the embodiment, in the timing fault detection process, the clock single chip microcomputer detects the open circuit and short circuit of the battery in real time through the PIN15, the power supply PIN15 is at a high idle level when the battery is open, and the power supply PIN15 detects a low level when the battery is short-circuited. When 7 days week examines LED open circuit short circuit, clock singlechip output PIN6 high level, MOS pipe Q4 switches on, and the singlechip detects LED open circuit short circuit through PIN14, and PIN14 voltage is the low level during the open circuit, and PIN14 is the high level during the short circuit. The clock single chip microcomputer outputs high and low levels through the PIN10 and the PIN11 to respectively control the first indicator light and the second indicator light.

IN the discharge time length timing detection process, the clock single chip microcomputer sets to enter an automatic detection program every 90 days of continuous charging, PIN6 and PIN12 high levels are output, the triode Q3 is conducted, the MOS tube Q4 is conducted, the MOS tube Q6 is conducted, the IN1 battery discharges through the LED lighting main loop, the clock single chip microcomputer detects the voltage of the battery through PIN15, the battery continues to discharge when the voltage is larger than 5.6V, the PIN6 low level is output when the voltage is smaller than 5.6V, the triode Q3 is cut off, the MOS tube Q4 is cut off, and discharging is stopped. The clock singlechip calculates whether the discharge time reaches the standard or not, and then outputs high and low levels through PIN10 and PIN11 to respectively control the first indicator light and the second indicator light.

Referring to fig. 3, in an embodiment, the first indicator light is a green indicator light, and the second indicator light is a red indicator light. When the red indicator light is activated, for example, it lights up or flashes, indicating that the current emergency light circuit is malfunctioning. When the green indicator light is on, for example, it lights up or flashes, indicating that the current emergency light circuit is normal.

To sum up, compare in prior art, the utility model discloses timing self-checking's emergency light utilizes timing function through built-in clock singlechip, realizes the self-checking. Specifically, the clock single chip microcomputer is set with a first preset period and a second preset period. Every interval of a first preset period, the clock single-chip microcomputer outputs a high level to a third PIN PIN6, and therefore the fault condition of the LED main loop is detected; and detects the voltage of the emergency battery IN1 through the first PIN15 connected to the power supply loop of the emergency battery IN1, thereby detecting a fault condition of the emergency battery IN1, and then makes a reminder using an indicator light. Every second preset period, the clock single-chip microcomputer outputs high level to the third PIN PIN6 and the fourth PIN PIN12, so that the emergency battery IN1 supplies power for the LED main loop, whether the discharge time reaches the standard or not is calculated, and then the indicator lamp is used for reminding. Therefore, the utility model discloses timing self-checking's emergency light can automatic timing detection line fault. Furthermore, the utility model discloses the emergency light of timing self-checking can also regularly automatic charge-discharge to the battery, extension battery life has extensive application scene.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (10)

1. An emergency light of regularly self-checking, its characterized in that includes: the emergency control system comprises an LED main loop, a first controlled switch, an emergency battery, a clock single chip microcomputer and an indicator light;

the input end of the first controlled switch is connected with the emergency battery, and the output end of the first controlled switch is connected with the LED main loop;

the clock single chip microcomputer is connected to a power supply loop of the emergency battery through a first pin so as to detect the voltage of the emergency battery;

the clock single chip microcomputer is also connected to the LED main loop through a second pin, is connected with a controlled end of the first controlled switch through a third pin, and outputs a high level to the third pin at fixed time in a first preset period so as to detect the voltage of the LED main loop;

the clock single chip microcomputer is also connected with the indicator lamp and outputs high level or low level to the indicator lamp to control the indicator lamp to work when detecting that the power supply loop of the emergency battery or the LED main loop is in fault.

2. The emergency lamp with timing self-check function according to claim 1, further comprising a second controlled switch, wherein a controlled end of the second controlled switch is connected to the third pin of the clock single-chip microcomputer, an input end of the second controlled switch is connected to the controlled end of the first controlled switch, and an output end of the second controlled switch is grounded.

3. The timed self-checking emergency light according to claim 2,

the first controlled switch is a first P-type MOS tube, the drain electrode of the first P-type MOS tube is the input end of the first controlled switch, the source electrode is the output end of the first controlled switch, and the grid electrode is the controlled end of the first controlled switch;

the second controlled switch is a first NPN triode, a collector of the first NPN triode is an input end of the second controlled switch, an emitter of the first NPN triode is an output end of the second controlled switch, and a base of the first NPN triode is a controlled end of the second controlled switch.

4. The emergency lamp with the timing self-check function according to claim 3, further comprising a third controlled switch, wherein an input end of the third controlled switch is connected with an output end of the second controlled switch, and an output end of the third controlled switch is connected with the LED main loop;

the clock single chip microcomputer is also connected with a controlled end of the third controlled switch through a fourth pin and outputs high level to the third pin and the fourth pin at fixed time in a second preset period so that the emergency battery supplies power to the LED main loop; and when the discharge time that the voltage value of the first pin is larger than the first reference value is detected to be larger than the preset time, outputting a high level or a low level to the indicator lamp to control the indicator lamp to work.

5. The emergency lamp with the timing self-check function according to claim 4, further comprising a fourth controlled switch, wherein an input end of the fourth controlled switch is connected with a direct-current power supply, an output end of the fourth controlled switch is connected with the emergency battery, and a controlled end of the fourth controlled switch is connected with the clock single chip microcomputer through a fifth pin;

when the clock single chip microcomputer detects that the voltage of the sixth pin is at a high level, the clock single chip microcomputer outputs the high level to the fifth pin so as to charge the emergency battery; and outputting a low level to the fifth pin when detecting that the voltage value of the first pin is greater than a second reference value.

6. The emergency light for timed self-test according to claim 5,

the third controlled switch is a first N-type MOS tube, the drain electrode of the first N-type MOS tube is the input end of the third controlled switch, the source electrode is the output end of the third controlled switch, and the grid electrode is the controlled end of the third controlled switch;

the fourth controlled switch is a second P-type MOS tube, a collector of the second P-type MOS tube is an input end of the fourth controlled switch, an emitter is an output end of the fourth controlled switch, and a base is a controlled end of the fourth controlled switch.

7. The emergency lamp with timing self-check function according to claim 5, further comprising a fifth controlled switch, wherein an input end of the fifth controlled switch is connected with a controlled end of the fourth controlled switch, an output end of the fifth controlled switch is grounded, and the controlled end is connected with the clock single chip microcomputer through the fifth pin.

8. The emergency light for timed self-test according to claim 7,

the fifth controlled switch is a second NPN triode, a collector of the second NPN triode is an input terminal of the fifth controlled switch, an emitter of the second NPN triode is an output terminal of the fifth controlled switch, and a base of the second NPN triode is a controlled terminal of the fifth controlled switch.

9. The emergency lamp with timing self-test function according to claim 7, wherein the clock single-chip microcomputer further outputs a high level to the third pin and the fourth pin when detecting that the voltage of the sixth pin is a low level, so that the emergency battery supplies power to the LED main loop; and outputting a low level to the third pin when detecting that the voltage value of the first pin is greater than the first reference value.

10. The emergency light for timed self-test according to claim 1, wherein the indicator light comprises a first indicator light and a second indicator light;

the clock single chip microcomputer is respectively connected with the first indicator light and the second indicator light through a seventh pin and an eighth pin, and controls the first indicator light and the second indicator light to work when the emergency battery or the LED main loop is detected to be in fault.

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