KR101265662B1 - Regular power supplying apparatus - Google Patents

Abstract

PURPOSE: A regular power supply device with a two-channel power switch is provided to automatically start the supply of power and to regularly operate connected devices when a vehicle starts to operate without manually turning on and off the power. CONSTITUTION: A regular power supply device(200) with a two-channel power switch comprises first and second relays(210,220), first and second power switches(230,240), and a MICOM(250). A first control signal is output to operate the first relay to be turned on or off if the MICOM senses ACC cut-off voltage of a vehicle while the first power switch is set off. If the supply of power of the ACC voltage of the vehicle is detected, the MICOM outputs the first control signal to turn the first relay on. [Reference numerals] (210) First relay; (220) Second relay; (230) First power switch; (240) Second power switch; (250) MICOM; (252) Timer; (280) First operation switch; (290) Second operation switch; (AA) First power(1CH); (BB) Second power(2CH); (CC) First control signal; (DD) Second control signal

Description

Always-on power supply with two-channel power switch {REGULAR POWER SUPPLYING APPARATUS}

The present invention relates to an always-on power supply having a two-channel power switch, and more particularly, to an always-on power supply capable of supplying always-on power even when all the powers of the vehicle are turned off. The present invention relates to an always-on power supply having two passive first power switches that are shut off.

In general, automobiles are equipped with various peripheral devices such as a black box, navigation, and a rear view camera.

Among them, a device such as a black box or a rear surveillance camera is used as a function of capturing an accident or a crime situation occurring on the vehicle by monitoring the front and / or the rear even when the vehicle is parked. Power needs to be supplied so that you can continue to take pictures while you are parked.

Therefore, the black box and / or the rear view surveillance camera is always connected to the battery via a socket connected to the battery voltage or directly connected to the battery to be supplied with power (always power supply). In addition, if necessary, other peripheral devices are also wired to operate by being connected to a constant power source.

However, when the battery box is constantly consumed in the black box or other peripheral device as described above, there is a problem that the battery may be completely discharged when the vehicle is parked for a long time.

The present invention provides an always-on power supply device having a function of automatically shutting off power supply when the vehicle is turned off and parked, thereby intelligently blocking the operation of various devices connected to the always-on power supply. An object of the present invention is to minimize discharge of a vehicle battery.

The present invention for achieving the above object, the first relay to turn on / off the battery voltage of the vehicle in accordance with the first control signal input to the first power output unit; A second relay configured to turn on / off the battery voltage to a second power output unit according to an input second control signal; A first power switch and a second power switch respectively operated by a user; And (1) when detecting the blocking of the ACC voltage of the vehicle while the first power switch is set to on, maintaining the first relay on and simultaneously monitoring the battery voltage while preserving the battery voltage. Outputs the first control signal for operating the first relay off when the reference voltage value is lower than the reference voltage value; and thereafter, when the supply of the ACC voltage is detected, the first control for operating the first relay on. Outputs a signal, and (2) in the state where the second power switch is set to on, the second relay is turned on when the blocking of the ACC voltage is detected regardless of the operated state of the first power switch. And the second control scene for operating the second relay off when the battery voltage falls below a predetermined reference voltage value while maintaining the battery voltage. And outputting a call, and then outputting the second control signal for turning on the second relay when the supply of the ACC voltage is detected.

The microcomputer outputs the first control signal for immediately turning off the first relay when the ACC voltage of the vehicle is detected when the first power switch is set to off. Outputting the first control signal for operating the first relay on when the supply of the ACC voltage is detected, and detecting the blocking of the ACC voltage of the vehicle when the second power switch is set to the off state, Regardless of the operated state of the first power switch, output the second control signal for immediately turning off the second relay, and then turn on the second relay when the supply of the ACC voltage of the vehicle is detected. And outputting the second control signal.

The microcomputer further includes a timer, and when the ACC voltage is cut while the first power switch is set to ON, when the timing of the time set in the timer is completed, the micom is configured to operate the first relay to be OFF. And outputting the first control signal.

The microcomputer outputs the first control signal by performing an OR operation on an off condition of the relays by the battery voltage and an off condition of the relays by the timer.

The apparatus may further include a first operation switch operable to allow the user to change the reference voltage value.

The apparatus may further include a second operation switch operable by the user to change the time of the timer.

The microcomputer may independently set a time for operating the first relay to be off and a time for operating the second relay to be off.

The first power output unit may be connected to a black box unit disposed in the vehicle so as to face at least the front side, and the second power output unit may be connected to the rear surveillance camera unit arranged to at least face the rear side.

According to the present invention having the above-described configuration, it is possible to minimize the discharge of the vehicle battery by intelligently blocking the operation of the various devices connected to the constant power while the vehicle is turned off and parked.

In addition, by automatically starting the supply of power at all times when the vehicle starts to run so that the connected devices can operate normally, the user does not manually operate the power on or off in using various external devices, Convenience is improved.

1 is a view for briefly explaining a form in which a power supply device having a two-channel power switch according to an embodiment of the present invention is applied to a vehicle.
2 is a block diagram illustrating an internal configuration of a regular power supply device having a two-channel power switch according to an embodiment of the present invention.
3 is a flowchart illustrating an operation of a regular power supply device having a two-channel power switch according to an embodiment of the present invention.
4 is a part of the instruction manual of the always-on power supply apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

1 is a view for briefly explaining a form in which a power supply device having a two-channel power switch according to an embodiment of the present invention is applied to a vehicle. Referring to the drawings, the always-on power supply device 200 according to an embodiment of the present invention is disposed between the battery 100 and the external devices 300 and 320 of the vehicle, so that the battery voltage to the external devices Control supply or interruption automatically or manually. In addition, the always-on power supply device 200 is also associated with the key box 110 of the vehicle, the battery is supplied to the external devices according to the operation of the key box 110 (that is, according to the on / off of the ACC voltage) The voltage can be controlled.

In the present invention, the external devices connected to the power supply 200 at all times are shown and described as the vehicle black box 300 and the vehicle rear monitoring camera 320. However, the black box and the rear view surveillance camera are only the simplest examples of external devices that can be connected to the power supply 200 at any time, and may be any device such as an audio device, a navigation device, a car charger, a cigarette lighter, and the like.

2 is a block diagram illustrating an internal configuration of a regular power supply device having a two-channel power switch according to an embodiment of the present invention. The always-on power supply device 200 according to an embodiment of the present invention, the first power supply relay 210 and the second power supply relay 220, the first power switch 230 and the second power switch 240 ), And the microcomputer 250. In addition, the always-on power supply device 200 further includes a first operation switch 280 and a second operation switch 290.

The first relay 210 is directly connected to the battery 100 or connected in parallel to a power source of another device that can always receive power from the battery. Alternatively, although not shown, the ACC voltage may be configured to be input in parallel with the battery.

By such a connection, not only the vehicle is started and running, but also the vehicle is parked, that is, the key of the vehicle is turned off or the key is removed from the key box. The battery 100 can always receive the charged voltage.

The output unit of the first relay 210 selectively outputs the voltage supplied from the battery 100 according to the operation of the first relay 210. The output portion of the first relay may be prepared in the form of a connector or socket corresponding to a dedicated power plug of the external device (first external device) 300 or a standard power input means for a vehicle. The vehicle standard power input means may be, for example, a cigar jack.

The first relay 210 operates according to the first control signal output from the microcomputer 250 to output or block the input battery voltage. It is preferable that the first relay 210 controls the (+) line BATT + of the battery voltage on or off.

Meanwhile, the first relay 210 may be a general relay component which is switched on and off every time a voltage of a certain value is input as a control signal, and may be configured using a switching element such as a power control MOSFET. It may be. That is, the first relay 210 may include a single or a plurality of active circuit elements, relays, solenoid switches, and the like that can automatically control the on or off of the circuit according to an arbitrary control signal.

The first power switch 230 is a switch provided to allow the user to arbitrarily manipulate / disable the normal power supply to the first external device 300. The microcomputer 250 detects whether the first power switch 230 is operated in an on state or an off state by a user, and outputs a corresponding control signal (first control signal) to the first relay 210. .

Meanwhile, in the always-on power supply device according to the present invention, the second relay 220 and the second power switch 240 perform the same functions as the above-described first relay 210 and the first power switch 230. It is configured to. As an example, the second relay 220 and the second power switch 240 may be configured by arranging the same elements as the first relay 210 and the first power switch 230 in parallel.

The microcomputer 250 controls the overall operation of the power supply 200 at all times. In addition, the operation of the first relay 210 and the second relay 220 is controlled in response to various parameters.

The microcomputer 250 is configured to detect an on / off state of the ACC voltage. To this end, the microcomputer 250 may detect an operation state of the key box 110 or may receive a power line to which an ACC voltage is applied.

In addition, the microcomputer 250 monitors operation states of the first power switch 230 and the second power switch 240.

In addition, the microcomputer 250 monitors the output voltage of the battery 100, and when the battery voltage falls below a predetermined reference voltage, the microcomputer 250 controls the operation of the relays 210 and 220 to block the voltage output. .

In addition, the microcomputer 250 may block the voltage output by controlling the operations of the relays 210 and 220 when timing of the predetermined time is completed after executing the timer 252 included in the microcomputer or provided separately from the microcomputer. Can be. At this time, the microcomputer 250 performs an OR operation on the constant power off control by the battery voltage and the constant power off control by the timer to cut off the constant power. As a result, the low voltage blocking function may be provided to prevent the battery from being completely discharged while the first power switch 210 or the second power switch 220 is turned on.

In addition, when the battery voltage exceeds a specific voltage value or an ACC voltage is input in the state in which the relays 210 and 220 are controlled to be off, the microcomputer 250 determines that the vehicle is started and is operating. 210 and 220 can be turned on.

In this case, the reference voltage value may be determined as a fixed value at the time of designing the power supply at all times or may be arbitrarily changed by the user by operating the first operation switch 280.

In addition, it is possible to support the user to change the set time of the timer by operating the second operation switch 290.

Here, it is preferable that the microcomputer 250 operates the first relay 210 or the second relay to be off only in a state in which the vehicle is parked. That is, when the vehicle is running or stopped while driving, or when the keybox 110 of the vehicle is in the ACC or ON position, the user is considered to be present in the vehicle (the user judges the use of the battery of the vehicle). It is preferable not to control the first relay 210 and the second relay 220 to be turned off. Then, when the key box 110 of the vehicle is changed to the OFF position or the key is removed from the key box 110 (when the vehicle is parked), the first power switch 230 or the second power switch 240 In response to the operation of the first relay 210 or the second relay 220 is turned off.

Meanwhile, the microcomputer 250 is supplied with an ACC voltage or a battery voltage for starting the vehicle while the first relay 210 or the second relay 220 is turned off (the key box is switched to the ACC or ON position). When the vehicle is started, the first relay 210 and the second relay 220 are turned on regardless of the operated state of the first power switch 230 or the second power switch 240. Thus, even if the user does not return to the allowable position after operating the first power switch 230 or the second power switch 240 to the cutoff position, if the vehicle is started and ready to run, the external devices ( 300 and 320 may be allowed to operate normally.

As such, in order to determine whether the vehicle is parked or in operation, the state of the key box needs to be sensed, which can be simply performed by monitoring the ACC voltage. That is, when the ACC voltage is supplied and the supplied voltage exceeds a predetermined reference value, the vehicle may be operated by the user, the key box may be switched to the ON position, or the vehicle may be considered to be in operation. At this time, the microcomputer 250 automatically releases the state in which the power switches 230 and 240 are operated to the cutoff position so that the relays 210 and 220 are turned off, and the relays 210 and 220 are turned off. It outputs a control signal (a first control signal and a second control signal) for operating ON.

The first operation switch 280 is a switch for arbitrarily changing the reference voltage value in the low voltage interrupt function provided by the microcomputer 250. The first operation switch 280 can be applied to any kind such as one or a plurality of dip switches, button switches, and dials (the same applies to the second operation switch).

In general, a vehicle uses a 12V battery or a 24V battery, depending on the type. Therefore, it is necessary to apply the reference value of the low voltage interruption to, for example, 11.6V, 22.8V, or the like. Further, even in a vehicle to which the same 12V battery is applied, the reference value can be stepped to, for example, 11.6V, 11.8V, or the like, and such various settings are possible by the first operation switch.

The second operation switch 290 is for the user to set the time that the timer 252 is timing. The set time represents an allowable time for the constant power supply according to the present invention to output the constant power while the vehicle is parked. The timer 252 preferably starts timing of a set time only when the vehicle is parked.

On the other hand, even when the timer 252 is timing the set time, the voltage of the battery 100 can be continuously monitored, even if the timer 252 has not completed the timing of the set time, the voltage of the battery 100 When lowered below the reference value, the microcomputer 250 may immediately turn off the first relay 210 and the second relay 220.

On the other hand, the constant power supply having a two-channel power switch according to the present invention may further include a data connector (not shown), the data connector is connected to the microcomputer 250, the control program of the microcomputer from the outside Receive the data to modify or update. By using this data connector, the user can arbitrarily modify the microcomputer's control program, so that errors in the control program input during the initial design can be corrected and various other functions can be provided, thereby improving user convenience. Can be.

This operation of the always-on power supply according to the present invention can be more clearly understood from the following table.

Power switch status ACC Voltage Status Always-on power supply operation ON state ACC ON → OFF (Parking status) Maintain power output at all times: battery voltage monitoring and timer monitoring ACC OFF → ON (Startup state) Normal power output OFF state ACC ON → OFF (Parking state) Always power off ACC OFF → ON (Startup state) Normal power output

As shown in Table 1, the upper-level power supply performs battery voltage monitoring and timer monitoring only when the start-up is blocked with the power switch on and the ACC voltage is off. On the other hand, if the start is interrupted after driving with the power switch turned off, the always-on power supply immediately stops output of the always-on power.

ACC Voltage Status Power switch status Always-on power supply operation ON state SW ON → OFF (Startup state) Normal power output state SW OFF → ON (Startup state) Normal power output state OFF state SW ON → OFF (Parking state) Always power off SW OFF → ON (Parking status) Maintain power output at all times: battery voltage monitoring and timer monitoring

In Table 2, when the power switch is turned on while the vehicle is parked (the OFF state of the ACC voltage), the continuous power supply assumes that the user wants to supply the connected external device, and immediately outputs the constant power. Initiate. In this case, the battery voltage monitoring and timer monitoring functions are preferably performed to protect the voltage of the battery, but may selectively stop the above functions.

3 is a flowchart illustrating an operation of a regular power supply device having a two-channel power switch according to an embodiment of the present invention.

In the present invention, the control of the first power switch 210 and the first relay 230 and the control of the second power switch 220 and the second relay 240 are preferably configured to be independent of each other.

In the flowchart of FIG. 3, an operation in which the first external device 300 is controlled by the control of the first power switch 210 and the first relay 230 will be described. However, the second power switch 220 and the second power switch 220 will be described. The same control can be made with respect to the relay 240.

First, the constant power supply according to the present invention receives the battery voltage and the ACC voltage of the vehicle, while controlling the first relay on to output the constant power to an external device such as a black box (S10), the ACC voltage is When detecting a case of being blocked (S20), the microcomputer considers that the vehicle is parked and checks the current state of the first power switch (S30).

If the first power switch is in the on state (always power allowed position), the microcomputer maintains the first relay in an on-state and outputs the battery power input to the external device and simultaneously inputs the voltage of the battery power input. Compare / monitor, and start a timer to execute timing (S40). At this time, when the battery voltage being monitored is lowered below the preset reference voltage by the first manipulation switch or the like (S50), the first relay is blocked to stop the output of the constant power (S60).

On the other hand, if the battery voltage is higher than the reference voltage in step S50, the charge is charged to the battery of the vehicle is regarded as sufficient to keep the first relay on to continue the output of the constant power.

At this time, the timing state of the timer is monitored at the same time as the monitoring of the battery voltage. If it is detected that the timer has completed the timing of the predetermined time (S90), the microcomputer operates the first relay off, and if the timing is not completed, the battery Continue monitoring voltage and timing time.

After performing the control to turn off the first relay, the microcomputer monitors the ACC voltage in order to detect a situation in which the user intends to start the vehicle (S70). If the microcomputer detects the input of the ACC voltage (S80), the microcomputer assumes that the vehicle is to be started and operates, and operates the first relay on to resume the output of the constant power.

4 is a part of the instruction manual of the always-on power supply apparatus according to an embodiment of the present invention, with reference to this can be more clearly understood the configuration and operation of the always-on power supply apparatus according to the present invention. In the figure, the first power switch 210 and the second power switch 220 of the present invention are labeled "multi boot switch" and are shown in the form of a toggle switch, the first operation switch 280 and the second. The operation switch 290 is labeled "set switch" and is shown in the form of a dip switch. Among the dip switches, the first and second setting switches correspond to the first operation switch, and the third to fifth setting switches correspond to the second operation switch.

Multi-boot : When the multi-boot switch is set to on, the black box will continue to power up even when the vehicle is turned off until the power is turned off by the voltage and timer settings. On the contrary, when the multi-boot switch is set to off, the power supply is cut off by the black box when the vehicle is turned off, and the power is automatically started when the vehicle is turned on.

Voltage setting (low voltage cutoff setting) : When the voltage is set, the vehicle is in the standby state when the vehicle is turned on, and the vehicle battery voltage is periodically checked when the vehicle is turned off. When the voltage falls below the set value, the power supply to the black box is cut off to prevent vehicle battery discharge.

Timer setting : Timer setting maintains the power supply to the black box until the set time, and cuts off the power supply after the set time. The timer function works only when the vehicle is turned off and is automatically released when the vehicle is turned on.

According to the constant power supply according to an embodiment of the present invention, when the vehicle is finished driving and parked (or when the ignition is turned off), the power supply is cut off at all times and is automatically maintained when the vehicle starts running. By providing first and second power switches that support the function of initiating supply of power, unnecessary power supply can be cut off for devices that do not need to be driven at all times when the vehicle is parked, thereby reducing the amount of discharge of the battery. It can be minimized. In addition, since the power supply is automatically started for the connected external devices when the vehicle intends to start driving, the user may not feel inconvenience in using various external devices.

That is, according to the always-on power supply device according to the present invention, by using the first and second power switch to control whether to continue recording by supplying power to the black box and / or rear surveillance camera even after the start of the vehicle is turned off It is possible to prevent the discharge of the vehicle battery by automatically shutting off the power supply to the black box and / or the rear view surveillance camera even when the battery is in a low voltage state or a set time elapses.

In addition, the continuous power supply apparatus according to another embodiment of the present invention may include a battery capable of supplying power to the connected external device for at least several seconds. According to such a battery, when the vehicle turns the key from ACC to ON, the battery voltage can momentarily become very low and return to the normal voltage by the driving of the starting motor, and the connected external devices are turned off by this sudden drop in voltage. Lights up again.

However, the ability to maintain the voltage of the constant power supply for a few seconds to the always-on power supply, it is possible to cope with such a momentary voltage drop, and to prevent the reboot of the connected external devices.

Claims (8)

A first relay configured to turn on / off a battery voltage of the vehicle to the first power output unit according to an input first control signal;
A second relay configured to turn on / off the battery voltage to a second power output unit according to an input second control signal;
A first power switch and a second power switch respectively operated by a user; And
(1) When the blocking of the ACC voltage of the vehicle is detected when the first power switch is set to OFF, the first control signal for immediately turning off the first relay is output. Outputting the first control signal for operating the first relay on when the supply is detected; and (2) if a block of the ACC voltage of the vehicle is detected when the second power switch is set to off, Regardless of the operated state of the first power switch, output the second control signal for immediately turning off the second relay, and then turn on the second relay when the supply of the ACC voltage of the vehicle is detected. And a two-channel power switch including a microcomputer for outputting the second control signal. The method of claim 1,
The microcomputer,
(1) When detecting that the ACC voltage of the vehicle is cut off while the first power switch is set to ON, the first relay is kept on and at the same time, the battery voltage is monitored by a predetermined reference while monitoring the battery voltage. Outputs the first control signal for operating the first relay off when the voltage is lower than the voltage value; and then, when sensing the supply of the ACC voltage, the first control signal for operating the first relay on. (2) In addition, in the state where the second power switch is set to ON, the second relay is kept ON when the blocking of the ACC voltage is detected regardless of the operated state of the first power switch. And at the same time, the second control signal for turning off the second relay when the battery voltage falls below a predetermined reference voltage value while monitoring the battery voltage. And outputting the second control signal for operating the second relay on if the supply of the ACC voltage is detected thereafter. The method of claim 2,
The microcomputer further includes a timer, and when the ACC voltage is cut off when the first power switch is set to on, when the timing of the time set in the timer is completed, the micom is configured to turn off the first relay. A constant power supply having a two-channel power switch, characterized in that for outputting a control signal. The method of claim 3,
The microcomputer outputs the first control signal by OR-operating an OFF condition of the relays by the battery voltage and an OFF condition of the relays by the timer, and outputting the first control signal. Device. The method of claim 2,
And a first operation switch operable to allow a user to change the reference voltage value. The method of claim 3,
And a second operation switch operable to allow a user to change the time of the timer. The method according to claim 6,
The microcomputer,
And a time for operating the first relay off and a time for operating the second relay off independently. The method of claim 1,
The first power output unit is connected to a black box unit disposed in the vehicle so as to at least face the front, and the second power output unit is connected to a rear surveillance camera unit arranged to face at least in the rear; Always power supply having a.

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