CN210202147U

CN210202147U - Emergency lamp control circuit of single chip microcomputer chip

Info

Publication number: CN210202147U
Application number: CN201920701246.XU
Authority: CN
Inventors: Wenli Dai; 戴文礼
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-03-27
Anticipated expiration: 2029-05-15

Abstract

An emergency lamp control circuit of a single chip microcomputer chip belongs to the technical field of electric control engineering and comprises the single chip microcomputer chip, a mains supply, a triode, a voltage stabilizing diode, a rectifier diode, a switch diode, an emergency lamp, a charging indicator lamp, a resistor, a key switch and a capacitor, wherein the single chip microcomputer chip is a chip at least comprising No. 1 to No. 8 connecting pins, the triode consists of three triodes 1, 2 and 3, and the resistor consists of 13 resistors 1 to 13; the control circuit can realize the authentication standard meeting IEC60598-2-22 in the aspects of battery charging, discharging, over-charging and over-discharging protection functions, namely, the control circuit is switched from a normal mode to an emergency mode when the voltage is not lower than 0.6 times of rated power supply voltage and is not switched on when the voltage is higher than 0.85 times of rated power supply voltage; when emergency occurs, the battery is lowered to the specified lower limit voltage, the emergency circuit is disconnected, and when the battery reaches the specified upper limit voltage during charging, the charging circuit is automatically disconnected.

Description

Emergency lamp control circuit of single chip microcomputer chip

Technical Field

The utility model relates to an emergency lamp control chip, in particular to singlechip chip's emergency lamp control circuit belongs to automatically controlled engineering technical field.

Background

The emergency lighting lamp is an important lighting device, and is used for automatically charging a backup battery when a main power supply is normally powered, and automatically switching the backup battery to supply power after the main power supply is powered off so as to provide emergency lighting. The system is widely applied to places with dense personnel, such as high-rise buildings, teaching buildings, shopping malls, entertainment places and the like. It can be used for the contents of safe evacuation of people, fire emergency lighting, navigation direction indication and the like when a building is in fire, thereby playing an important role in the life of people, even being called as a life light. The LED lamp has the advantages of long service life, low energy consumption, high color rendering, easy maintenance, small volume, high lighting speed, no stroboflash, high luminous efficiency and the like, and is widely applied to the field of emergency illuminating lamps. At present, the process of switching from lighting powered by a main power supply to lighting of an emergency power supply is mainly realized by linkage of a relay and the main power supply, namely when the main power supply normally supplies power, the relay disconnects the emergency power supply and an emergency lighting load; when the main power supply is powered off, the relay is connected with the emergency power supply and the emergency lighting load. A set of circuits and corresponding elements are needed to be used for transition between the relay and the emergency lighting load, and the set of circuits is the emergency lighting load, namely an emergency lamp driving circuit. The LED can be applied to a driving control circuit required by the LED, and a good and stable current is obtained through the driving circuit, so that the LED display is more uniform and beautiful, and the application requirements of various occasions are met. However, in the conventional driving circuit, discrete components are mostly used for function conversion and power amplification, and the defects of high cost, large volume, short service life, easy breakdown, single function and the like of the driving circuit are difficult to overcome all the time due to the defects of complex circuit structure, low reliability, low precision, high cost, high power consumption, small dynamic range and the like of the driving circuit; in addition, the battery is easy to damage because of the lack of functions of detecting charging voltage and detecting battery voltage and the lack of functions of protecting the battery from over-charging and over-discharging. The emergency light as the "life light" is discovered in time as soon as the battery is damaged, and the result is not imaginable as soon as an emergency occurs.

Disclosure of Invention

In order to solve the technical defect that the traditional emergency lamp power supply lacks the overcharge and overdischarge in the structure, the utility model provides a singlechip chip's emergency lamp control circuit.

The utility model adopts the technical proposal that: the utility model provides a singlechip chip's emergency light control circuit, by the singlechip chip, mains supply, the triode, zener diode, rectifier diode, switch diode, the emergency light, the charge indicator, resistance, key switch and electric capacity constitute, the singlechip chip is for at least including chip and No. 2 connecting pins including No. 1 to No. 8 connecting pins for the charge indicator connecting pin, No. 3 connecting pins are key switch connecting pins, No. 4 connecting pins are battery charging output pin, No. 5 connecting pins are battery voltage detection pin, No. 6 connecting pins are charging voltage detection pin, No. 7 connecting pins are emergency light level output pin, the triode is for including triode 1, triode 2 and triode 3's three constitution, resistance is for including resistance 1 to 13 constitutes, the concrete connection scheme of singlechip chip connecting pin is as follows:

the No. 1 connecting pin is connected with one end of a commercial power supply port through a No. 1 line;

the No. 2 connecting pin is connected with the positive electrode of the charging indicator lamp through a No. 2 circuit, and the negative electrode of the charging indicator lamp is grounded through a resistor 3;

the No. 3 connecting pin is connected with one end of a commercial power supply port through one end of a No. 3 circuit, the other end of the No. 3 circuit is connected with one end of a key switch, and the other end of the key switch is grounded;

the No. 4 connecting pin is connected with the base electrode of the triode 2 through a No. 4 circuit and a resistor 5, and the collector electrode of the triode 2 is connected with the base electrode of the triode 1 through the resistor 2 and the emitter electrode is grounded; an emitter of the triode 1 is connected with one end of a commercial power supply port through a resistor 1, a collector is connected with the No. 1 circuit in parallel through a rectifier diode anode, a switch diode anode and a resistor 6, and the No. 1 circuit is grounded through a capacitor;

the No. 5 connecting pin is connected with the emitting electrode of the triode 3 through a resistor 10 and a resistor 13 from one end of the No. 5 circuit, the other end of the No. 5 circuit is connected with the negative electrode of the rectifier diode and the positive electrode of the switch diode through a resistor 8, and is connected with the positive electrode of the battery and the positive electrode of the emergency lamp, and then is connected with the collector electrode of the triode 3 through the negative electrode of the emergency lamp, and the emitting electrode of the triode 3 is grounded through the resistor 13;

the No. 6 connecting pin is grounded through a resistor 11 by one end of a No. 6 circuit, and the other end of the No. 6 connecting pin is connected with a commercial power supply port through a resistor 9 and a resistor 7;

the No. 7 connecting pin is connected with the base electrode of the triode 3 through a No. 7 circuit and a resistor 12;

no. 8 connecting pin is connected with the anode of the voltage stabilizing diode by No. 8 circuit and is grounded, and the cathode of the voltage stabilizing diode is connected with No. 1 circuit.

The utility model has the advantages that: the emergency lamp control circuit with high-precision low-power-consumption AD sampling singlechip chip control is adopted, and can realize the certification standard meeting IEC60598-2-22 in the aspects of automatic emergency conversion, battery charging, emergency discharging, battery overcharge and overdischarge protection functions, namely, the conversion from a normal mode to an emergency mode is not lower than 0.6 times of rated power supply voltage, and the emergency lamp is not lightened when the conversion is higher than 0.85 times of the rated power supply voltage; when the battery voltage is lower than the specified voltage (1.8 v of a lead-acid single battery, 2.6v of a nickel-chromium single battery and 1v of a lithium battery), the emergency current is not output, and the function of protecting the battery from over-discharge is achieved; when the battery reaches the specified upper limit voltage during charging, the charging circuit is automatically disconnected, so that the safety of the battery is protected by preventing overcharging.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic diagram of the circuit and local amplification structure of the present invention.

In the figure, a comprises a single chip microcomputer chip, B, a mains supply, B1, a mains supply port, Q1, a triode 1, Q,2, a triode 2, Q,3, a triode 3, Z1, a zener diode, D1, a rectifier diode, D2, a switch diode, a resistor 1, R2, a resistor 2, R3, a resistor 3, R4, a resistor 4, R5, a resistor 5, R6, a resistor 6, R7, a resistor 7, D1, a rectifier diode, D2, a switch diode, Z1, a zener diode, an LED1, an emergency lamp, an LED2, a charging indicator lamp, R1-R13, resistors 1-13, K, a key switch, C and a capacitor.

Detailed Description

In the embodiment of fig. 1, an emergency lamp control circuit of a single chip microcomputer chip is composed of three chips, namely, a single chip microcomputer chip (a), a commercial power supply (B), a triode (Q), a zener diode (Z1), a rectifier diode (D1), a switch diode (D2), an emergency lamp (LED 1), a charge indicator lamp (LED 2), a resistor (R), a key switch (K) and a capacitor (C), wherein the single chip microcomputer chip (a) is a chip at least including a connection pin from 1 to 8, a connection pin from 2 is a charge indicator lamp (LED 2) connection pin, a connection pin from 3 is a key switch (K) connection pin, a connection pin from 4 is a battery charge output pin, a connection pin from 5 is a battery voltage detection pin, a connection pin from 6 is a charge voltage detection pin, a connection pin from 7 is an emergency lamp (LED 1) level output pin, the triode (Q) is composed of a triode 1 (Q1), a triode 2 (Q2) and a triode 3 (Q3), the resistor (R) is composed of 13 resistors from 1 (R1) to 13 (R13), and the specific connection scheme of the connection pin of the singlechip chip (A) is as follows:

the No. 1 connecting pin is connected with one end of a commercial power supply port (B1) through a No. 1 line;

the No. 2 connecting pin is connected with the positive electrode of the charging indicator lamp (LED 2) through a No. 2 line, and the negative electrode of the charging indicator lamp (LED 2) is grounded through a resistor (R3);

the No. 3 connecting pin is connected with one end (B1) of a commercial power supply port through one end of a No. 3 circuit, the other end of the No. 3 circuit is connected with one end of a key switch (S1), and the other end of the key switch (S1) is grounded;

the No. 4 connecting pin is connected with the base electrode of the triode 2 (Q2) through a resistor (R5) by a No. 4 circuit, the collector electrode of the triode 2 (Q2) is connected with the base electrode of the triode 1 (Q1) through a resistor (R2), and the emitter of the triode is grounded; an emitter of the triode 1 (Q1) is connected with one end (B1) of a mains supply port through a resistor 1 (R1), a collector is connected with a No. 1 circuit in parallel through a positive electrode of a rectifier diode (D1), a positive electrode of a switch diode (D2) and a resistor 6 (R6), and the No. 1 circuit is grounded through a capacitor (C);

the No. 5 connecting pin is connected with the ground through a resistor 10 (R10) and the emitter of a triode 3 (Q3) through a resistor 13 (R13) from one end of a No. 5 circuit, the other end of the No. 5 circuit is connected with the negative electrode of a rectifier diode (D1) and the positive electrode of a switch diode (D2) through a resistor 8 (R8), the positive electrode of a battery and the positive electrode of an emergency lamp (LED 1) are connected, the negative electrode of the emergency lamp (LED 1) is connected with the collector of the triode 3 (Q3), and the emitter of the triode 3 (Q3) is grounded through a resistor 13 (R13);

the No. 6 connecting pin is grounded through a resistor 11 (R11) at one end of a No. 6 line, and the other end of the No. 6 connecting pin is connected with a commercial power supply port (B1) through a resistor 9 (R9) and a resistor 7 (R7);

the No. 7 connecting pin is connected with the base electrode of the triode 3 (Q3) through a resistor 12 (R12) by a No. 7 circuit;

the No. 8 connecting pin is connected with the anode of the voltage stabilizing diode (Z1) by a No. 8 line and is grounded, and the cathode of the voltage stabilizing diode (Z1) is connected with a No. 1 line.

Example 1: an off-line mode: when the emergency lamp is not in a charging state, the No. 7 connecting pin of the single chip (A), namely the output port of the emergency lamp (LED 1), outputs high level, and the emergency lamp (LED 1) is lighted up by 100 percent. When the key switch (K) is pressed once, the emergency lamp (LED 1) is turned on by 50%, and when the key switch is pressed again (S1), the emergency lamp (LED 1) is turned off.

Example 2: and (3) charging mode: suppose that the rechargeable battery is a 6V rechargeable battery formed by connecting 3 pieces of 2.0V in series. After the power supply is plugged, if the voltage of the No. 6 connecting pin of the singlechip chip (A) is higher than 1.5V, the voltage of the No. 5 connecting pin is lower than 1.1V and corresponds to the voltage of a battery, wherein the voltage of the corresponding commercial power supply port (B1) is more than 0.6 time of the rated voltage, the voltage of the corresponding No. 5 connecting pin is lower than 1.1V, the No. 3 connecting pin outputs high level to start charging the battery, the No. 2 connecting pin outputs high level, and the charging indicator lamp (LED 2) is lightened; when the voltage of the No. 5 connection pin is higher than 1.2V and corresponds to the voltage of the battery to be 6.9V, the No. 3 connection pin outputs low level, and the circuit stops charging the battery; when the No. 5 connection pin detects that the voltage of a single battery is higher than 1.5V or lower than 0.3V, the system judges that the battery is in failure, and the charging indicator lamp (LED 2) flashes twice per second to warn the failure.

Example 3: an automatic emergency mode: when the emergency lamp is in a charging state, the voltage of the No. 6 connecting pin of the single chip (A) is lower than 1.5V and corresponds to an alternating current conversion end (B1), and when the alternating current input is in a range of 0.6-0.85 times of the rated voltage, the No. 7 connecting pin of the level output end of the emergency lamp (LED 1) outputs a high level, and the emergency lamp (LED 1) is in a lighted emergency state; when the voltage of the No. 6 connecting pin is higher than 1.5V, the rated voltage corresponding to the commercial power supply port (B1) reaches or is higher than 0.85 times, the No. 7 connecting pin stops high-level output, the emergency function is closed, and the emergency lamp (LED 1) is not lightened. In addition, when the voltage of the No. 5 connection pin of the battery voltage detection pin is lower than 0.8V and corresponds to the battery voltage of 5.4V, the No. 7 connection pin of the emergency output end of the single chip (A) outputs low level, and the emergency lamp (LED 1) is not lightened.

Example 4: in the charging state, the key switch (K) is pressed, the No. 7 connecting pin outputs high level to light the emergency lamp (LED 1), after the key switch (K) is released and pressed, the No. 7 connecting pin outputs low level, and whether the emergency function fails or not in the charging state is detected.

Example 5: the minimum value of the component parameters adopted by the emergency lamp control circuit is as follows: 10 omega/1W of resistor 1 (R1), 4.7K omega/1-4W of resistor 2 (R2), 1K omega/1-4W of resistor 3 (R3), 10K omega/1-4W of resistor 4 (R4), 1K omega/1-4W of resistor 5 (R5), 100 omega/1-4W of resistor 6 (R6), 30K omega/1-4W of resistor 7 (R7), 100K omega/1-4W of resistor 8 (R8), 1K omega/1-4W of resistor 9 (R7), 100K omega/1-4W of resistor 10 (R10), 13K omega/1-4W of resistor 11 (R11), 1K omega/539/1-4W of resistor 12 (R12), 1.2/1-4W of resistor 13 (R3), 1.2/1W of zener diode (Z1), 5V 1/1W of ballast lamp, 84 and charging LED 73784, the emergency lamp (LED 1) is a white 6V1W light emitting diode, the

triodes

1, 2 and 3 (Q1, Q2 and Q3) are SS8550PNP type silicon triodes, an alternating current 220V is input into an alternating current Transformer (TI), 8V is output, a bridge rectifier diode (BR) 1A/400V, a FUSE (FUSE 1) 250V1A and an electrolytic capacitor (C1) 470 UF/16V.

Claims

1. An emergency lamp control circuit of singlechip chip, characterized by: control circuit is by the singlechip chip, mains power supply, the triode, zener diode, rectifier diode, switch diode, the emergency light, the charge indicator lamp, resistance, key switch and electric capacity constitute, the singlechip chip is for at least including chip and No. 2 connecting pins including No. 1 to No. 8 connecting pins for the charge indicator lamp connecting pin, No. 3 connecting pins are key switch connecting pins, No. 4 connecting pins are battery charging output pin, No. 5 connecting pins are battery voltage detection pin, No. 6 connecting pins are charging voltage detection pin, No. 7 connecting pins are emergency light level output pin, the triode is for including triode 1, triode 2 and triode 3's three constitution, resistance is for including 13 of resistance 1 to resistance 13 and constitutes, the concrete connection scheme of singlechip chip connecting pin is as follows: