CN210986529U

CN210986529U - Super power-saving standby management circuit of emergency lighting lamp

Info

Publication number: CN210986529U
Application number: CN201921731150.4U
Authority: CN
Inventors: 陈玉辉; 李如平; 徐宏升; 罗小勇
Original assignee: Cecep Latticelighting Co ltd
Current assignee: China energy saving Jinghe Technology Co.,Ltd.
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-07-10
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a super power saving standby management circuit of emergency lighting power supply, including AC DC power, charging circuit, switching signal acquisition circuit, L ED constant current drive circuit and L ED light source, L ED constant current drive circuit includes output VD + and VD-, the AC DC power includes output V1+ and V1-, still includes singlechip MCU1, rechargeable battery circuit, electric energy switching circuit and charge detection circuit, singlechip MCU1 includes the foot VCC, foot PJ, foot PA, foot PD, foot PW and public foot VSS, be provided with the operation procedure that whether automatic judgement need get into super power saving standby mode, automatic detection commercial power switch lamp signal and commercial power failure need the rechargeable battery power supply in the singlechip MCU 1.

Description

Super power-saving standby management circuit of emergency lighting lamp

Technical Field

The utility model belongs to the technical field of electronic information, especially, relate to a super power saving standby management circuit of emergency lighting lamps and lanterns.

Background

The emergency lighting is characterized in that emergency lighting and evacuation indication lighting are particularly important when a disaster occurs in a civil building, personnel in the building rapidly and safely evacuate from a disaster area when an external power supply is interrupted, and an emergency lighting system in the building plays a main role.

At present, when an emergency lamp is in a standby state, the power consumption is large, and the standby current loss is usually from several milliamperes to tens of milliamperes, and even dozens of milliamperes. Through the fact that products are actually put into use from the factory to customers, waiting time of months or even more than one year is usually reserved for intermediate turnover storage and construction, and at the moment, the rechargeable battery can cause serious power shortage and even irreversible charging failure of the rechargeable battery. To solve this problem, there are two conventional solutions: firstly, the rechargeable batteries are disassembled and respectively packaged, and then the rechargeable batteries are installed when construction is carried out; and secondly, a switch is arranged outside the emergency lamp, the rechargeable battery is disconnected before leaving a factory, and the emergency lamp is connected with a power supply when construction is performed. However, if the time from the construction to the use by energization is too long, the charging failure phenomenon is still irreversible to the rechargeable battery.

SUMMERY OF THE UTILITY MODEL

The utility model provides a super power saving standby management circuit of emergency lighting lamps and lanterns for solve the long-time standby problem of rechargeable battery of emergency lighting lamps and lanterns, super power saving standby management circuit includes AC/DC power, charging circuit, switching signal acquisition circuit, L ED constant current drive circuit and L ED light source, L ED constant current drive circuit includes output VD + and VD-, AC/DC power includes output V1+ and V1-, still includes singlechip MCU1, rechargeable battery circuit, electric energy switching circuit and charge detection circuit, singlechip MCU1 includes the position VCC, position PJ, position PA, position PD, position PW and public position VSS, be provided with the operation procedure that whether automatic judgement need get into super power saving standby mode, automated inspection commercial power on-off lamp signal and commercial power failure need the rechargeable battery power supply in the singlechip 1.

Preferably, the rechargeable battery circuit comprises a diode D1, a rechargeable battery BT1, an output end V2+, a negative electrode BAT-and a positive electrode BTA + of the rechargeable battery, an output end V2-, the positive electrode of the diode D1 is connected with the output end V2+ of the rechargeable circuit, the negative electrode BAT-of the diode D1 is connected with the negative electrode BAT-of the rechargeable battery, the negative electrode BAT-of the rechargeable battery is connected with the output end V2-, and the rechargeable battery circuit is used for providing electric energy for emergency lighting and preventing current from flowing backwards to the rechargeable circuit.

Preferably, the electric energy switching circuit comprises a diode D2, a diode with two normally closed and normally open relays J1, a triode Q1, resistors R1 and R2, the anode of the diode D2 is connected with the rechargeable battery BTA +, the cathode of the diode D2 is connected with the collector c of the triode Q1, two ends of the coil with two normally closed and normally open relays J1 are connected in parallel with the diode D2, the base electrode b of the triode Q1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with the pin PJ of the MCU1, the base electrode b of the triode Q1 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with the rechargeable battery BAT-, the common pin 1 and common pin 4 with two normally closed and normally open relays J1 are respectively connected with the BAT + VD + drive circuit, the negative terminals of the two normally closed and normally open relays V862 are respectively connected with the AC + V +.

Preferably, the charging detection circuit includes diode D3, resistance R3 and R4, diode D3 positive pole with rechargeable battery circuit output V2+ is connected, diode D3's negative pole with resistance R3 one end is connected, resistance R3's the other end with singlechip MCU 1's foot position PD is connected, resistance R4's one end with singlechip MCU 1's foot position PD is connected, resistance R4's the other end with rechargeable battery negative pole BTA-is connected, the charging detection circuit is used for detecting whether there is commercial power and commercial power to awaken up.

Preferably, an operation program principle is set in the single chip microcomputer MCU1, when the single chip microcomputer MCU1 program detects that the super power saving standby working mode needs to be entered, the single chip microcomputer MCU1 firstly turns off the electric energy switching circuit through a pin PJ, the single chip microcomputer MCU1 turns off the charging detection circuit through a pin PD, the single chip microcomputer MCU1 turns off the L ED constant current driving circuit through a pin PW, all peripheral circuits of the single chip microcomputer MCU1 are in a power-off state, the single chip microcomputer MCU1 enters the super power saving standby working mode, when the charging detection circuit detects that the charging is being performed, the single chip microcomputer MCU1 firstly turns on the electric energy switching circuit through the pin PJ, the single chip microcomputer MCU1 turns on the charging detection circuit through the pin PD, the single chip microcomputer MCU1 enables the L ED constant current driving circuit through the pin PW, and then the single chip microcomputer MCU1 enters the normal working mode.

The utility model discloses the beneficial effect of circuit is:

the utility model discloses the circuit cooperates singlechip MCU 1's software operation simultaneously through setting up the hardware circuit, falls to within a few microamperes with whole standby current, even 1 microampere below, and traditional emergency lighting lamp standby circuit's power consumptive can reach several milliamperes to tens of milliamperes, tens of milliamperes even, compares with it, and power consumption has reduced several thousand times to several tens of thousands times. Because the emergency lighting lamp has super power-saving standby current, when the rechargeable battery is directly installed in the emergency lighting lamp, the technical problem that the rechargeable battery is permanently invalid due to overlarge standby current is solved, and the operation and maintenance of the product are facilitated; meanwhile, the rechargeable battery can be installed in the emergency lighting lamp when leaving the factory, so that the problem of complex field construction is solved, the field construction management is facilitated, the construction efficiency is improved, and the lamp fault caused by uneven installation level is avoided.

Drawings

Fig. 1 is a schematic diagram of a super power-saving standby management circuit of an emergency lighting fixture.

Fig. 2 is a flowchart of a single chip microcomputer operation procedure of the super power saving standby management circuit of the emergency lighting lamp.

Reference numerals: 100-a rechargeable battery circuit; 200-a power switching circuit; 300-charge detection circuit.

Detailed Description

The utility model discloses the circuit is further explained below in combination with the specification attached drawing, as shown in fig. 1 and fig. 2, a super power saving standby management circuit of emergency lighting power supply, including AC/DC power, charging circuit, switching signal acquisition circuit, L ED constant current drive circuit and L ED light source, L ED constant current drive circuit includes output VD + and VD-, AC/DC power includes output V1+ and V1-, still includes singlechip MCU1, rechargeable battery circuit 100, electric energy switching circuit 200 and charge detection circuit 300, singlechip MCU1 includes the pin VCC, pin PJ, pin PA, pin PD, pin PW and public pin VSS, be provided with the operation procedure that whether automatic judgement need get into super power saving standby mode, automatic detection commercial power switch lamp signal and commercial power outage need the rechargeable battery power supply in singlechip MCU 1.

As shown in fig. 1 and 2, when the utility power is switched on, when the utility power is input, the utility power is connected from two ends L and N and is divided into two ways of utility power, wherein one way of utility power supplies power to an AC/DC power supply, the AC/DC power supply outputs a group of DC power V1+, V1-, the DC power V1+, V1-are divided into two ways, wherein one way of DC power V1+, V1-supplies power to a charging circuit, the charging circuit outputs a group of V2+, V2-, the charging battery BT1 is charged through a diode D1, the charging battery V1 supplies power to a pin VCC and a VSS BT of the MCU1, so that the MCU1 enters a working state, in addition, the V2+ is simultaneously connected with the positive electrode of another diode D3, and after being divided by the diodes D3 and resistors R3 and R4, the high level signal is provided to the pin PD 6867 of the MCU 6867, and the single-chip 1 outputs a low level PJ signal, so that the power supply current is cut off to the common triode 1, and the constant current contacts 1 and 1 are driven by the constant current contacts 1 and 1.

Another path of commercial power passes through an external switch S1, if the switch S1 is in a closed state at this time, power is supplied to the switch signal acquisition circuit to enable the switch signal acquisition circuit to normally work, and the voltage level of the pin PA of the MCU1 of the single chip microcomputer is also pulled to be a low level/a high level by a signal output terminal VS + being a low level/a high level, if the pin PA of the MCU1 of the single chip microcomputer is defined as a low level/a high level, which indicates a light-on signal, the MCU1 of the single chip microcomputer outputs a high level/a low level from the pin PW of the MCU1 of the single chip microcomputer to the control signal enabling terminal VP + of the L ED constant current driving circuit through a built-in operation program, so that the enabling terminal VP + is a high level/a low level, if the enabling terminal VP + the high level/the low level is defined as a normal working point to light the L ED light source, assuming that the commercial power is cut off, the pin PD of the MCU1 of the pin PD of the MCU1 is a low level, the pin PJ outputs a high level, the high level, which outputs a constant current charging voltage of the battery via a resistor R1 driving transistor Q1, the battery charger relay, the relay, which controls the battery charger relay, the lighting relay, the lighting relay, the.

When the switch S1 is in an off state, the switch signal acquisition circuit is in an off state, and releases a level through a signal output terminal VS +, the level of the VS + is pulled to a high level/a low level by a pin PA of the single chip microcomputer MCU1 to represent as a light-off signal, the single chip microcomputer MCU1 outputs a control signal enable terminal VP + from the low level/the high level to the L ED constant current driving circuit through a built-in operation program, so that the enable terminal VP + becomes the low level/the high level, and if the enable terminal VP + low level/high level is defined as a work prohibition, the L ED light source is not lighted.

As shown in fig. 1 and 2, when a rechargeable battery is installed and a mains supply is not connected, the negative electrode of a diode D1 of the rechargeable battery circuit (100) is connected with the positive electrode terminal BAT + of the rechargeable battery to play a role in preventing the rechargeable battery from recharging the current to the charging circuit, the rechargeable battery supplies power to a single chip microcomputer MCU1, when the single chip microcomputer MCU1 is just powered on, an initialization program is firstly performed, then operation is started through a built-in program, firstly, through a pin PD, if a low level of the pin PD is detected, which indicates that no mains supply exists, the single chip microcomputer MCU1 outputs a high level temporarily through a pin PJ, through a resistor R1, a triode Q1 is driven to enable a triode Q1 to be in a conducting state, the power consumption of a normally open contact 2 and 5 is connected with the positive and negative electrodes BAT +, BAT-, of the rechargeable battery is then supplied power to a L ED driving circuit through common contacts 1 and 4 of a relay J1, the MCU1 outputs a high level through a pin PW, a control signal of the power consumption of the normally open contact 2 and enables an enable terminal BAT +, a working terminal BAT + of the battery to be normally open, even when the single chip microcomputer MCU 468 is powered on, the power source p 4642 is switched to be in a constant current mode, the constant current is switched off, the constant current is switched on, the constant current, the MCU 3642 is switched on, the MCU 3642 is switched off, the MCU 3642 is switched on the normally open circuit, the MCU1, the MCU is switched on, the MCU is switched off, the.

As shown in fig. 1 and fig. 2, the utility model discloses the circuit gets into the theory of operation of awakeing up of power down mode is, works as the utility model discloses when the circuit got into power down mode, singlechip MCU1 foot position PD was in the low level and awaits up the wake-up state in order, and built-in program set for foot position PD and then awaken up singlechip MCU1 for the high level and continue to work, set for the PD then not awaken up for the low level, continue to be in power down mode. If the utility power is connected at the moment, the pin PD of the MCU1 of the single chip microcomputer becomes high level, and the MCU1 of the single chip microcomputer is awakened to continue working.

Claims

1. The super power-saving standby management circuit of the emergency lighting lamp is characterized by comprising an AC/DC power supply, a charging circuit, a switching signal acquisition circuit, an L ED constant-current driving circuit and a L ED light source, wherein the L ED constant-current driving circuit comprises output ends VD + and VD-, the AC/DC power supply comprises output ends V1+ and V1-, the super power-saving standby management circuit further comprises a single-chip microcomputer MCU1, a rechargeable battery circuit (100), an electric energy switching circuit (200) and a charging detection circuit (300), the single-chip microcomputer MCU1 comprises a pin VCC, a pin PJ, a pin PA, a pin PD, a pin PW and a public pin VSS, an operation program is arranged in the single-chip microcomputer MCU1, and the super power-saving standby management circuit has the functions of automatically judging whether to enter a super power-saving standby working mode or not, automatically detecting a commercial power switching lamp signal and automatically detecting whether to start the rechargeable.

2. The super power saving standby management circuit of claim 1, wherein: the rechargeable battery circuit (100) comprises a diode D1, a rechargeable battery BT1, an output end V2+, a negative electrode BAT-and a positive electrode BTA + of the rechargeable battery, an output end V2-, the positive electrode of the diode D1 is connected with the output end V2+ of the rechargeable circuit, the negative electrode BAT-of the diode D1 is connected with the negative electrode BAT-of the rechargeable battery, the negative electrode BAT-of the rechargeable battery is connected with the output end V2-, and the rechargeable battery circuit (100) is used for providing electric energy for emergency lighting and preventing current from flowing backwards to the rechargeable circuit.

3. The super power-saving standby management circuit of an emergency lighting lamp according to claim 2, wherein the power switching circuit (200) comprises a diode D2, a normally closed and normally open relay with double groups J1, a transistor Q1, resistors R1 and R2, wherein the anode of the diode D2 is connected to the rechargeable battery BTA +, the cathode of the diode D2 is connected to the collector c of the transistor Q1, the two ends of the coil of the normally closed and normally open relay with double groups J1 are connected in parallel to the diode D2, the base electrode b of the transistor Q1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the pin PJ 1 of the MCU circuit MCU1, the base electrode b of the transistor Q1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the rechargeable battery BAT-, the emitter e of the transistor Q1 is connected to the rechargeable battery BAT-, the normally closed and normally open relay with double groups J28, the normally closed and normally open relay V631 is connected to the AC-V + V865, the normally closed and normally open relay V + V865 is connected to the power supply output terminal of the rechargeable battery BAT-V + V switch circuit V + V9, the normally open relay and V + V switch circuit V switch.

4. The super power saving standby management circuit of claim 3, wherein: the charging detection circuit (300) comprises a diode D3, a resistor R3 and a resistor R4, the anode of the diode D3 is connected with the output end V2+ of the rechargeable battery circuit (100), the cathode of the diode D3 is connected with one end of a resistor R3, the other end of the resistor R3 is connected with the pin PD of the single-chip microcomputer MCU1, one end of the resistor R4 is connected with the pin PD of the single-chip microcomputer MCU1, the other end of the resistor R4 is connected with the cathode BTA of the rechargeable battery, and the charging detection circuit (300) is used for detecting whether commercial power and commercial power are awakened.