KR20100088889A - Battery checking apparatus and method for exit sign device - Google Patents

Abstract

PURPOSE: An apparatus and a method for checking a battery of an exit lamp are provided to automatically check the state of a battery by using a microcomputer. CONSTITUTION: A constant voltage switch(SW) is connected to the rear of a constant voltage unit. The constant voltage switch supplies a DC voltage passing through the constant voltage unit to a lamp lighting unit(13) and a battery charger(14) in the on state. The constant voltage switch supplies battery power to the lamp lighting unit by blocking the DC voltage in case of a battery discharge test. A microcomputer(11) tests the charge and discharge of the battery by controlling the on and off of the constant voltage switch. The microcomputer determines the state of the battery or exit lamp by detecting the voltage of the battery or a lamp(15) in the charge and discharge test. A light emitting diode(LED3,LED4) displays the state of the battery or exit lamp as a blanker or a flickering period through the control of the microcomputer.

Description

Checking device for induction lamp battery and its method {Battery Checking Apparatus and Method for Exit Sign Device}

The present invention relates to a device for checking an induction lamp battery and a method thereof, and more specifically, to perform a discharge test periodically in a microcomputer to check the performance of the battery, the state of the battery according to the discharge test of the light emitting diode (LED) The present invention relates to a device and a method for displaying by a flashing light or a flashing cycle.

An induction lamp is a device that informs the direction and location of an exit so that personnel in the building can evacuate to the outside in case of an emergency such as a fire or disaster.

As shown in FIG. 1, most induction lamps use alternating current (AC) as a main power source, and are provided with a battery BAT as a standby power source to supply power for a predetermined time in preparation for power failure.

To this end, the battery BAT must always maintain a sufficient amount of charge. In the prior art, the battery BAT is supplied by supplying the DC power converted through the switching transformer T and the constant voltage unit 1 to the battery charger 3. Was constantly constantly charged with a current greater than the trickle current.

However, in the related art, it is not possible to know whether the battery BAT prepared in case of a power failure is normal or failure, and it is cumbersome to check whether the battery BAT is normally operated, and thus leave the failed battery BAT intact. At this time, the battery BAT does not operate properly during a power failure such as a fire, and thus, the battery BAT is not turned on because the battery BAT cannot be supplied to the LED lamp lighting unit 2. Therefore, it could not play the role of a guide light to indicate the direction or location of the exit.

 In other words, it is very cumbersome to discern whether the battery has reached the end of its life, and it is necessary to cut off the AC power supply of induction lamp and measure the discharge time and voltage separately to determine that the battery (BAT) that does not meet the criteria is not suitable for replacement. It is very cumbersome to perform these tasks manually, which is rarely done at present.

In addition, there is a disadvantage that full charge close to 100% is not achieved by applying a constant current to charge the battery BAT, and when a large voltage or current is continuously applied to achieve a full charge, full charge occurs but the battery BAT life is shortened. There was a problem.

In addition, nickel-cadmium batteries, which are frequently used in induction lamps, can prevent abnormal charging such as memory effects and extend the life of the battery (BAT) when repeated full discharge and full charge periodically, rather than continuous charging. The conventional induction lamp has a problem in that the life of the battery is shortened by only constant charging with a current larger than the trickle current.

The present invention has been made in order to solve the above problems, by periodically performing a discharge test in the microcomputer to check the performance of the battery, the state of the battery according to the discharge test to the flashing or flashing cycle of the light emitting diode (LED) It is convenient that the administrator does not have to check the discharge time of each induction lamp battery to check the battery status of the induction lamp, and it is convenient and the device for checking the induction lamp battery that can perform the role of induction lamp properly in case of power failure. The purpose is to provide.

In addition, another object of the present invention is to optimize the battery performance and lifespan by a strong charge for a suitable time until a full charge after discharge, and after that the trickle charge in a little over the amount of self-discharge inside the battery The present invention provides an induction lamp battery inspection apparatus and method for saving electrical energy.

An apparatus for checking an induction lamp battery according to the present invention for achieving the above object includes a switching transformer for converting a high voltage of AC into a low voltage, a constant voltage unit for converting AC through DC through the switching transformer, and a DC that passes through the constant voltage part. Battery charging unit generated by the voltage required for charging, Battery used to turn on the induction lamp when the AC is out of power for a certain time, Light emitting lamp lighting unit for generating DC through the constant voltage section as the voltage required to light the lamp Induction lamp consisting of a light emitting lamp that the lamp element is connected in series or in parallel;

Connected to the rear end of the constant voltage unit, the DC voltage passed through the constant voltage unit is supplied to the light emitting lamp lighting unit and the battery charging unit in the ON state during normal operation.When the battery discharge test is performed, the DC voltage is turned off to cut off the DC voltage and turn on the battery power. A constant voltage switch for supplying the

The microcomputer performs a battery charging and discharging test by controlling the ON / OFF of the constant voltage switch, and detects the voltage of the light emitting lamp or the battery during the charging and discharging test to determine the state of the induction lamp device or the battery;

And a light emitting diode which displays the state of the induction lamp device and the state of the battery in a flashing light or a flashing cycle under the control of the microcomputer.

In addition, the inspection method of the induction lamp battery according to the present invention includes a switching transformer, a constant voltage unit, a constant voltage switch, a microcomputer, a battery charging unit, a battery, a light emitting lamp lighting unit, a light emitting lamp and a first, second light emitting diode check device. In the inspection method used,

Starting the discharge test by connecting the power of the battery to the light emitting lamp lighting unit by turning off the constant voltage switch in the microcomputer;

Detecting the voltage per cell of the battery during the discharge test in the microcomputer and determining that the battery is immediately replaced when the voltage per cell of the battery becomes less than the first reference voltage before the first discharge time elapses;

Determining that the battery is to be replaced sooner or later if the voltage per cell becomes less than the first reference voltage after the first discharge time has elapsed and before the second discharge time has elapsed;

Determining that the battery is normal if the voltage per cell is greater than or equal to the first reference voltage after the second discharge time elapses;

According to the determination result of the battery, it characterized in that it comprises a step of indicating the state of the battery in the flashing or flashing cycle of the first light emitting diode.

According to the above-mentioned problem solving means, the battery manager automatically checks the state of the battery using a microcomputer and displays it on the light emitting diode to inform the building manager of the replacement time, so that the building manager separately discharges the induction light to check the battery state of the induction light. You can save the hassle of checking each one.

In addition, strong charging and trickle charging can be implemented in a timely manner to maintain full charge close to 100% of the battery, thereby optimizing battery performance and lifespan and saving a lot of electrical energy.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram of an induction lamp circuit having a battery check function according to the present invention;

As shown, the switching transformer T, the constant voltage unit 10, the constant voltage switch SW, the microcomputer 11, the battery charging unit 14, the battery BAT, the light emitting lamp lighting unit 13, the light emitting lamp 15 ) And light emitting diodes (LED3, LED4).

The switching transformer T converts a high voltage (eg, AC 220V) of the alternating current (AC 220V) into a low voltage by the winding ratio of the primary on the input side and the secondary on the output side to reduce power consumption and downsize the product. use.

The constant voltage unit 10 converts AC power into DC power (for example, converts AC 220V into DC 13V), which is implemented as a power switching IC for driving the switching transformer T.

The constant voltage switch SW is turned on / off under the control of the microcomputer 11 and is normally turned on to convert the DC constant voltage converted through the constant voltage unit 10 to the light emitting lamp lighting unit 13 and the battery charging unit 14. Supply.

When the battery BAT discharge test is performed, the constant voltage switch SW is turned off under the control of the microcomputer 11 to cut off the DC constant voltage, and supply the DC power supplied by the battery BAT to the light emitting lamp lighting unit 13. The light emitting lamp 15 is turned on.

For example, a short discharge test is performed every 15 days for 5 minutes by turning off the constant voltage switch SW under the control of the microcomputer 11, so that the battery BAT voltage is the first reference voltage per cell (for example, 1.1 V). ) If it is below, it is judged to be replaced immediately, and it discharges completely every 90 days so that the voltage per cell is 1.0V or less.If the voltage per cell is 1.1V or less 30 minutes before the discharge is performed, it is replaced immediately. If the voltage per cell is 1.1V or less, it will be replaced soon. If the voltage per cell is 1.1V or more after 75 minutes, it is determined to be normal.

In the present invention, there are two types of battery BAT charging in the battery charger 14. After the discharge test or the battery is replaced by the pulse width modulated signal of the microcomputer 11, a strong charge is performed first, followed by a trickle charge. do.

For example, nickel-cadmium batteries are charged at 1/10 of the battery (BAT) capacity for 15 hours to make them fully charged (when the voltage per battery cell is lower than the second reference voltage (for example, 1.2V), the non-rechargeable battery After full charge, convert to trickle charge and continue charging with current of 1/30 to 1/40 of capacity.

The charging voltage and the charging current are strongly charged by supplying a large voltage or current when the pulse width is increased by the pulse width modulation signal output from the microcomputer 11, and when the pulse width is decreased, the trickle charge is supplied by supplying a small voltage or current. do.

When the battery is removed from the connector or the like during charging of the battery BAT, the microcomputer 11 detects that the current does not flow at the detected battery voltage and stops the charging, and informs the first light emitting diode LED3 of this.

The battery BAT is a spare power supply for maintaining the induction lamp for a certain period of time when the AC power is outage. When the AC power is supplied, the battery BAT continues charging, and the supply of AC power is interrupted or the microcomputer ( When the constant voltage switch (SW) is turned off for the discharge test in 11), the discharge starts.

When the microcomputer 11 starts to discharge the battery BAT, the microcomputer 11 calculates the voltage of the battery BAT and the elapsed discharge time to determine whether the battery needs to be replaced immediately or sooner or later.

The light emitting lamp lighting unit 13 receives a DC constant voltage passing through the constant voltage unit 10 and generates a voltage for lighting the light emitting lamp 15 by the pulse width modulation signal of the microcomputer 11.

At this time, the microcomputer 11 increases or decreases the pulse width to control the brightness of the light emitting lamp 15, and detects the voltage of the light emitting lamp 15 so that the light emitting lamp 15 may be pulled out of the connector or the light emitting lamp 15 may malfunction. If no current flows, the second light emitting diode LED4 notifies this.

The light emitting lamp 15 is implemented as a light source of an actual induction lamp, in which a plurality of lamp elements are connected in series or in parallel, and the brightness varies according to the amount of current flowing through the lamp elements.

The total forward voltage applied to both ends of the light emitting lamp 15 is the forward voltage (for example, 3.0 to 3.2 V) of the lamp elements connected in series.

The first light emitting diode LED3 indicates the state of the battery BAT by turning on or flashing the cycle. For example, the first light emitting diode LED3 is always turned on when the battery BAT is detached or poorly charged, and after the discharge test. Flashes quickly if replacement is required immediately, flashes normally if replacement is needed soon, flashes slowly during discharge, and goes off when battery (BAT) is normal. Priority of operation is implemented considering the importance of the above. do.

The second light emitting diode (LED4) indicates the state of the induction light equipment in the flashing or flashing cycle, for example, the second light emitting diode (LED4) is the current when the lamp element of the light emitting lamp 15 is pulled out of the connector or the current does not flow due to a failure Blinks rapidly, flashes normally when the memory or constant voltage level of the microcomputer 11 is not normal, and blinks slowly during strong charging, and always lights up when AC is being input, or turns off when AC is not input. The ranking is implemented in consideration of the importance of the above.

In the present invention, green is used as the second light emitting diode LED4 and red is used as the first light emitting diode LED3.

3 is a flowchart of a battery checking method according to the present invention.

As illustrated, AC power input to the induction lamp device is converted into a DC constant voltage through the switching transformer T and the constant voltage unit 10 and supplied to the light emitting lamp lighting unit 13 and the battery charging unit 14.

The light emitting lamp lighting unit 13 receives a pulse width modulation signal supplied from the microcomputer 11 and applies it to an internal switching element to generate a voltage suitable for driving (lighting) the light emitting lamp to light the light emitting lamp 15. (S302).

In the state where AC power is continuously input (S304), the battery charger 14 receives the pulse width modulated signal of the microcomputer 11 and applies it to an internal switching element, thereby making a voltage lower than a constant voltage.

At this time, the full charge is made by increasing the pulse width so that a large current flows, and after the full charge, the pulse width is reduced by applying a relatively smaller current than the full charge (S306).

The microcomputer 11 detects the voltage of the light emitting lamp 15 or the voltage of the battery after charging, and indicates the state of the induction lamp device or the state of the battery by turning on or off the light emitting diodes LED3 and LED4 (S308).

After the predetermined period has elapsed and the discharge test is performed (S310), the microcomputer 11 turns off the constant voltage switch SW to perform the discharge test, and when the constant voltage is cut off, the power is turned on from the battery BAT. The discharge is added to the unit 13 to start discharging (S312) and continues until the charging is completed (S314).

At this time, the microcomputer 11 measures the discharge time and the battery voltage, determines whether the battery is normal, and drives the first light emitting diode LED3 to display the state of the battery.

4 is a detailed flowchart of the charging process shown in FIG.

As illustrated, the microcomputer 11 detects the voltage of the battery BAT to determine whether the battery BAT is normally inserted into the connector (S402). If the microcomputer 11 is not inserted normally, the microcomputer 11 performs the step S308 to perform a first light emitting diode ( LED3) always lights up.

If the battery BAT is normally inserted, for example, after 5 minutes of discharge (S404), the battery BAT is strongly charged for 15 hours at 1/10 of the battery capacity (S406 and S408), and the voltage per cell is the second reference. When the voltage is detected to be less than 1.2V, for example, S410, the battery may be determined to be a non-rechargeable battery by performing operation S308 (S414) and the first light emitting diode LED3 is always turned on.

If the voltage per battery cell is detected to be 1.2V or more, it continues with a trickle charge charging with a current of 1/30 to 1/40 of the capacity (S412), and then turns off the first light emitting diode (LED3) in step S308 to turn off the battery. Indicates that is normal.

5 is a detailed flowchart of the discharge process shown in FIG.

As shown, the microcomputer 11 starts a full discharge so that the voltage per cell becomes 1.0 V or less by turning off the constant voltage switch (S502) after a predetermined period, for example, 90 days after performing the previous discharge test.

The microcomputer 11 detects the voltage per cell of the battery during the discharge test and before the discharge time is 30 minutes (the first discharge time) (S504), the voltage per cell of the battery is the first reference voltage (1.1V). If it is less than (S514) it is determined that the replacement of the battery immediately (S520).

After the 30 minutes (the first discharge time) has elapsed and before 75 minutes (the second discharge time) (S506), when the voltage per cell is 1.1V or less (S522), it is determined that the battery is soon to be replaced (S524).

If the voltage per cell is 1.1V or more after the 75 minute (second discharge time) elapses, it is determined that the battery is normal (S508).

As described above, after determining the state of the battery by performing a discharge test (S512), the battery is charged by turning on the constant voltage switch (S512).

In operation S316, the first light emitting diode LED3 is turned on or off depending on the state of the battery.

For example, if it is determined that the battery is replaced immediately, the first light emitting diode LED3 flashes quickly, and if it is determined that the battery is replaced sooner or later, it blinks more slowly than the replacement, and when the battery is determined to be normal, the first light emitting diode is turned off.

In the above example, the battery BAT discharge test is automatically performed under the control of the microcomputer 11, but after the battery BAT is replaced, the administrator manually discharges the battery to check whether the replaced battery is normal. In the case of performing the test, the discharge test may be performed by pressing the constant voltage switch (SW) for a predetermined time or more.

In addition, the time or voltage / current coming from the above embodiment is just one example, and the present invention is not limited thereto.

1 is a block diagram of a conventional induction light circuit,

2 is a block diagram of an induction lamp circuit having a battery check function according to the present invention;

3 is a flowchart of a battery checking method according to the present invention;

4 is a detailed flowchart of the charging process shown in FIG.

5 is a detailed flowchart of the discharge process shown in FIG.

<Description of the symbols for the main parts of the drawings>

10: constant voltage section 11: microcomputer

13: light emitting lamp lighting unit 14: battery charging unit

15: luminous lamp BAT: battery

LED3, LED4: Light Emitting Diode SW: Constant Voltage Switch

T: switching transformer

Claims (7)

Switching transformer for converting high voltage of AC into low voltage, constant voltage unit for converting AC through DC into the switching transformer, battery charging unit for generating DC through the constant voltage part as a voltage required for battery charging, induction lamp when AC is outage In the induction lamp consisting of a battery used to light a predetermined time, a light emitting lamp lighting unit for generating a DC for the voltage required to light the light emitting lamp, the light passing through the constant voltage unit, a light emitting lamp in which several lamp elements are connected in series or in parallel; Connected to the rear end of the constant voltage unit, the DC voltage passed through the constant voltage unit is supplied to the light emitting lamp lighting unit and the battery charging unit in the ON state during normal operation.When the battery discharge test is performed, the DC voltage is turned off to cut off the DC voltage and turn on the battery power. A constant voltage switch for supplying the The microcomputer performs a battery charging and discharging test by controlling the ON / OFF of the constant voltage switch, and detects the voltage of the light emitting lamp or the battery during the charging and discharging test to determine the state of the induction lamp device or the battery; And a light emitting diode which displays the state of the induction lamp device and the state of the battery in a flashing or flashing cycle under the control of the microcomputer. The method of claim 1, And said light emitting diode comprises a green light emitting diode indicating a state of an induction lamp device and a red light emitting diode indicating a state of a battery. The method of claim 1, The microcomputer controls the brightness of the light emitting lamp with a pulse width modulated signal and controls the amount of charging current when the battery is charged. In the inspection method using the inspection device of the induction lamp battery consisting of a switching transformer, a constant voltage unit, a constant voltage switch, a microcomputer, a battery charging unit, a battery, a light emitting lamp lighting unit, a light emitting lamp and the first and second light emitting diodes, Starting the discharge test by connecting the power of the battery to the light emitting lamp lighting unit by turning off the constant voltage switch in the microcomputer; Detecting the voltage per cell of the battery during the discharge test in the microcomputer and determining that the battery is immediately replaced when the voltage per cell of the battery becomes less than the first reference voltage before the first discharge time elapses; Determining that the battery is to be replaced sooner or later if the voltage per cell becomes less than the first reference voltage after the first discharge time has elapsed and before the second discharge time has elapsed; Determining that the battery is normal if the voltage per cell is greater than or equal to the first reference voltage after the second discharge time elapses; And indicating the state of the battery by turning on or off the light emitting diode according to the determination result of the battery. The method of claim 4, wherein In the step of indicating the state of the battery, the first light emitting diode blinks quickly when it is determined that the battery is immediately replaced, and when it is determined that it is replaced sooner than when the flash is immediately replaced, and when the battery is determined that the first light emitting diode is turned off. Induction lamp battery inspection method characterized in that. The method according to claim 4 or 5, After performing the discharge test of the battery in the microcomputer to perform a battery charge by turning on the constant voltage switch, Detecting the voltage of the battery by the microcomputer to determine whether the battery is normally inserted into the connector, and if the battery is not inserted normally, first lighting the first light emitting diode; When the battery is normally inserted into the connector, initially charging and fully charging for a predetermined time period, and continuously performing trickle charging after being fully charged; If the voltage per battery cell is detected below the second reference voltage after the full charge, the first light emitting diode is always turned on by the non-rechargeable battery, and when it is detected above the second reference voltage, the first light emitting diode is judged normal and always turned off. Checking method of the induction lamp battery, characterized in that performed through the steps to do. The method of claim 6, The method for checking an induction lamp battery, characterized in that when charging the strong charge is charged with a current of 1/10 of the battery capacity, and when the trickle charge is charged at a current of 1/30 to 1/40 of the battery capacity.

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