KR101116161B1 - Digital video recording device for vehicles - Google Patents

Abstract

The present invention relates to a vehicle video recording apparatus which can prevent the discharge of a vehicle battery and record a surrounding image of a vehicle for a long time, and thus the vehicle video recording apparatus includes a first battery, a second battery, the first battery and the first battery. A generator for charging a battery, a motor for transmitting power to the generator for generating the generator, an image camera for photographing at least one of the inside and the outside of the vehicle, and an image camera electrically connected to the image camera And a digital video recorder for recording an image to be photographed, wherein the digital video recorder is electrically connected to the first battery to receive power, and the image camera is electrically connected to the second battery to receive power. It features. Therefore, according to the present invention, the power of the digital image recorder and the image camera using the main battery and the auxiliary battery is properly distributed, so that the digital image recorder and the image camera can be used for a long time even when the vehicle is turned off.

Car Battery, Power Management, Discharge, Power Distribution, Parking

Description

Vehicle video recording device {DIGITAL VIDEO RECORDING DEVICE FOR VEHICLES}

The present invention relates to a vehicle image recording apparatus, and more particularly, to a vehicle image recording apparatus capable of preventing the discharge of the vehicle battery and recording the surrounding image of the vehicle for a long time.

Recently, vehicles have been equipped with video recording apparatuses for recording an interior or an exterior of a vehicle using an image camera. Vehicle image recording apparatuses are equipped with image cameras for capturing the inside or outside of the vehicle to record the inside or outside of the vehicle. Images recorded on the vehicle video recorder remain as accidents or reference data and can be extracted and checked when necessary.

Such a video recording apparatus for a vehicle is mainly mounted on a large bus to record an image inside or outside the vehicle.

On the other hand, recently, legislation such as mandatory installation of a video recording device for a passenger vehicle such as a commercial taxi is being proposed or implemented.

By the way, a passenger car such as a commercial taxi mainly uses a single battery to record an image of the inside or outside of the vehicle in a vehicle video recording apparatus. Such a passenger vehicle receives power from a generator in the vehicle at the time of driving and records an image, so there is no need to worry about a power supply problem.

However, a vehicle image recording apparatus mounted on a passenger vehicle receives power from a battery in a vehicle and records an image of the vehicle in a state in which the vehicle is turned off as in parking.

In this case, since the capacity of the battery mounted on the passenger car is limited, it is difficult for the vehicle video recording apparatus mounted on the passenger car to record an image of the inside or outside of the vehicle for a long time. In particular, when the vehicle video recording apparatus is operated while the vehicle is turned off, such as during parking, the battery is discharged and replaced. Therefore, most vehicle video recording apparatuses cut off power from the battery when the vehicle is turned off to prevent the battery from being discharged.

By the way, vehicles such as passenger cars at the time of parking have been damaged by the offender with the purpose of damaging the vehicle, such as breaking the glass window. In addition, there is an unscrupulous driver who accidentally runs away from the parked vehicle.

Therefore, even when the vehicle is parked, data such as photographing the outside of the vehicle and leaving an image record is required.

To this end, recently, a low-power video recording device has been released to release a product that can photograph the outside of the vehicle even when parking.

However, since only one battery is installed in a passenger vehicle equipped with a low-power vehicle video recording device, the battery power for recording an external image of the vehicle is discharged in about 5 to 8 hours, such that the vehicle does not start. It is happening. For example, when a driver parks a vehicle from Friday evening to Saturday afternoon, which is a weekend, and turns on the vehicle video recording device, the battery can not be discharged and there is a problem that the battery must be replaced. In particular, a battery used in a vehicle of a passenger car is mainly a rechargeable lead acid battery, and when the voltage falls below a voltage of less than 10.5 V, the battery may be incapable of being recharged and may have to be replaced.

In this case, the driver may replace the battery with a large one, but this may put a heavy burden on the driver in terms of cost and may not prevent the battery from being discharged for starting. In addition, although a plurality of batteries can be mounted to increase the external video recording time during parking, the discharge of the battery for starting the vehicle can not be prevented.

An object of the present invention is to provide an image recording apparatus for a vehicle in which the battery is prevented from being discharged when the digital image recorder records the internal or external image of the vehicle while the vehicle is parked.

Another technical problem of the present invention is to provide an image recording apparatus for a vehicle that can record an image for a long time by properly distributing the power of a battery when the digital projection recorder records an internal or external image of the vehicle while the vehicle is parked. .

The vehicle image recording apparatus of the present invention for achieving the above technical problem is a first battery, a second battery, a generator for charging the first battery and the second battery, transfers power to the generator for generating the generator A motor, a video camera for photographing at least one of the inside and the outside of the vehicle, and a digital video recorder electrically connected to the video camera to record an image taken by the video camera. The digital image recorder may be electrically connected to the first battery to receive power, and the image camera may be electrically connected to the second battery to receive power.

In this case, when there is no change between frames of an image input from the image camera, the digital image recorder may be set to a standby mode until a change of image occurs to reduce the average power consumption.

In addition, the image camera may be configured in plural, and the plurality of image cameras may have a resolution set between 100,000 pixels and 1 million pixels.

The vehicle image recording apparatus may further include switching means provided between the first battery and the second battery; And a key box which turns on the switching means when the vehicle starts to electrically connect the first battery and the second battery. It may be formed to include more. In this case, the switching means may be made of a high current relay.

In addition, the first battery and the second battery may be formed of any one selected from lead acid batteries, NaS batteries, and Calcium batteries.

In addition, the first battery may be electrically connected to the motor for the driver to start the vehicle.

In addition, the digital image recorder may record not only the image but also the sound of the inside and outside of the vehicle.

The digital image recorder may further include an auxiliary memory device which is a storage medium for recording an image; The auxiliary storage device may be formed of a hard disk (HDD) or a solid state disk (SSD).

On the other hand, the vehicle image recording apparatus is electrically connected between the first battery and the digital image recorder, when the voltage of the first battery is detected to fall below the current consumption inhibited voltage by detecting the voltage of the first battery A first power distribution module which blocks a connection between the first battery and the digital image recorder; And electrically connected between the second battery and the image camera, and detecting the voltage of the second battery so that the voltage of the second battery falls below a current consumption inhibited voltage. A second power distribution module for disconnecting the connection; It may be formed to include more.

In this case, the first power distribution module may cut off power of the first battery and the main electronic device to any one of a voltage set value of the first battery between 10.8V and 12.3V. In addition, the second power distribution module may cut off the power supply of the first battery and the expansion electronic device to any one of a voltage set value of the second battery between 10.8V and 12.3V.

The first power distribution module may include: a first voltage setting unit electrically connected to the first battery to set a current consumption ban voltage of the first battery; A first voltage comparator configured to compare a current consumption inhibited voltage set by the first voltage setter with a voltage of the first battery and output a signal when the current consumption inhibited voltage of the first voltage setter exceeds a reference voltage; And turning off when the signal is output from the first voltage comparator to cut off power between the first battery and the digital image recorder, and when the signal is not output to the first voltage comparator, the first battery and the digital image recorder. A first switching unit electrically connecting the first switching unit; It may be formed to include.

In this case, the first voltage setting unit includes: a first dip switch having a plurality of contacts electrically connected to the first battery; And a plurality of first variable resistance parts configured to be electrically connected to a plurality of contacts of the first dip switch, respectively, and to set resistance values of the first dip switch. The dip switch may be configured to set a current consumption inhibit voltage of the first battery according to a set value of the variable resistor.

The first switching unit may turn on the first switching element by receiving a signal output from the first voltage comparator, and detect a current consumption of the digital image recorder when the first switching element is turned on to generate a constant voltage. It can be formed including a switching circuit for applying to the main electronic device. In this case, the switching circuit may be configured in plural, and the plurality of switching circuits may output different voltages.

On the other hand, the second power distribution module includes a second voltage setting unit electrically connected to the second battery to lower and set the voltage of the second battery; A second voltage comparator configured to compare a voltage set by the second voltage setter with a voltage of the second battery and output a signal when the set voltage of the second voltage setter exceeds a reference voltage; And turning off when the signal is output from the second voltage comparator to cut off power between the second battery and the digital image recorder, and when the signal is not output to the second voltage comparator, the second battery and the digital image recorder. A second switching unit electrically connecting the second switching unit; It may be formed to include.

The second voltage setting unit may include a second dip switch having a plurality of contacts electrically connected to the second battery; And a second variable resistor unit configured to be electrically connected to a plurality of contacts of the second dip switch, respectively, and to set a resistance value of the second dip switch. The dip switch may be configured to set a current consumption inhibit voltage of the second battery according to a set value of the variable resistor.

In addition, the second switching unit may be turned on by receiving a signal output from the second voltage comparator, and electrically connected to the second switching element and turned on when the second switching element is turned on. It may be formed to include a power supply relay for applying power to the image camera.

On the other hand, another vehicle video recording apparatus of the present invention for achieving the above technical problem is a vehicle video recording apparatus having a plurality of batteries, a generator for charging at least one of the plurality of batteries, the plurality of A digital video recorder electrically connected to any one of the batteries to be powered; An image camera electrically connected to a battery other than a battery for supplying power used by the main electronic device among the plurality of batteries to receive power, and output an image signal to the digital image recorder; And detecting a voltage of each of the plurality of batteries and electrically connecting each of the plurality of batteries, the digital image recorder, and the image camera when the voltage of each of the plurality of batteries exceeds a current consumption inhibiting voltage. A power distribution module that detects a voltage of each battery and cuts off electrical connections between each of the plurality of batteries, the digital image recorder, and the image camera when the voltage of each of the batteries falls below a current consumption inhibited voltage; And the second electrode is formed.

In addition, the video recording apparatus for a vehicle may include switching means provided between the plurality of batteries; And a key box which turns on the switching means when the vehicle is started to electrically connect the plurality of batteries to each other. It may be formed to include more.

According to the present invention, since the main battery and the auxiliary battery are not discharged even when the digital image recorder and the image camera are turned on while the vehicle is turned off, the battery does not need to be replaced by the discharge.

According to the present invention, the power of the digital image recorder and the image camera using the main battery and the auxiliary battery is properly distributed, so that the digital image recorder and the image camera can be used for a long time even when the vehicle is turned off.

The present invention can record the inside and outside video and audio of the vehicle for a long time in the state that the start of the vehicle is off, there is an effect that can secure information about the damage of the vehicle.

The above effects have been briefly described so as not to obscure the gist of the present invention, and will be described in more detail in the following detailed description.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same components, and features, coupling relations, operations, and effects related to the same components will not be duplicated as much as possible. In the following description, equivalent or similar conceptual elements will be described using the same names.

Hereinafter, a configuration, a coupling relationship, and a role of a video recording apparatus for a vehicle according to an embodiment of the present invention will be described.

1 is a block diagram of a vehicle video recording apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the vehicle image recording apparatus 100 according to an exemplary embodiment of the present invention may include a first battery MB, a second battery SB, a generator G, a motor M, and a large current relay. 110, a key box 120, a digital image recorder 130, an image camera 140, a first power distribution module 150, and a second power distribution module 160. In the present embodiment, a large current relay 110 will be described as an example of the switching means.

The first battery MB has an anode terminal electrically connected to the generator G, a large current relay 110, and a key box 120, and a cathode terminal electrically connected to the ground terminal. In addition, the first battery MB has a positive end electrically connected to the first power distribution module 150 to supply power to the first power distribution module 150. The first battery MB is charged when the generator G is driven. Here, the first battery MB is electrically connected to the motor M and serves to supply power for driving the motor M. FIG. That is, the first battery MB is basically installed in the vehicle and corresponds to a main battery that supplies power to the driver. Here, it is preferable that the first battery MB is formed of any one selected from rechargeable lead acid batteries, NaS batteries, and Calcium batteries that are frequently used in vehicles. For reference, the NaS cell is a sodium-sulfur cell. The first battery MB may output a voltage having an output voltage of approximately 11. 5V to 14V.

A positive end of the second battery SB is electrically connected to the high current relay 110. In addition, the second battery SB is electrically connected to the second power distribution module 160 to supply power to the second power distribution module 160. The second battery SB is a rechargeable lead acid battery or a NaS battery or a Calcium battery that is auxiliary to the vehicle and supplies power to the image camera 140 even when the key is separated from the key box 120 and turned off at the start of the vehicle. It plays a role. The second battery SB may output a voltage having an output voltage of approximately 10.8V to 14V.

The generator (G) is linked with the motor (M). The generator G serves to convert the power energy of the motor M into electrical energy when the motor M is driven to charge the first battery MB.

The motor (M) is linked with the generator (G) serves to transfer the power energy so that the generator (G) can be generated. The motor M is driven when the key 121 of the key box 120 presses the key switch 122 to drive the engine E of the vehicle, thereby generating a generator G interworking with the engine E. It drives to generate power.

The high current relay 110 is electrically connected between the first battery MB and the second battery SB. When the key 121 of the key box 120 presses the key switch 122, the high current relay 110 electrically connects the first battery MB and the second battery SB. That is, the high current relay 110 is a first battery for the power generated by the generator (G) when the driver to drive the motor (M) by pressing the key switch 122 by turning the key 121 at the start of the vehicle. The first battery MB and the second battery SB are simultaneously charged by being supplied to the MB and the second battery SB. In contrast, the high current relay 110 serves to electrically separate the first battery MB and the second battery SB when the key 121 is separated from the key switch 122.

Here, the high current relay 110 is preferably formed to include a contact 111, b contact 112, the core 113. The contact a 111 is electrically connected to the positive electrode of the first battery MB. The b contact 112 is electrically connected to the positive electrode of the second battery SB. The core 113 is electrically connected between the second contact point 124 and the ground terminal of the key box 120 so that the first contact point 123 and the second contact point 124 become conductive by the insertion of the key 121. When it is magnetized and serves to electrically connect the contact point 111 and the contact point 112.

The key box 120 includes a key 121, a key switch 122, a first contact 123, and a second contact 124. The first contact 123 is electrically connected to the first battery MB and the motor M, and the second contact 124 is electrically connected to the core 133 of the large current relay 110. The key 121 serves to electrically connect the first contact 123 and the second contact 124 by the driver's operation for driving the engine E when the driver rides in the vehicle.

The digital video recorder (DVR) 130 is mounted inside the vehicle and is electrically connected to the first switching unit 153. The digital image recorder 130 is driven by receiving power from the first battery MB when the first switching unit 153 is turned on. The digital image recorder 130 includes a circuit for receiving an analog image signal from the image camera 140 and converting the analog image signal into a digital image. The circuit compresses the converted digital image to an auxiliary storage device 234 such as a hard disk. Record. In this case, the digital image recorder 130 has power consumption of a circuit responsible for digital image processing and compression, and power consumption of an auxiliary memory device 234 such as a hard disk for storing the compressed image. In addition, the digital image recorder 130 may be electrically connected to the plurality of image cameras 140, and may have a multiple image segmentation function to display a plurality of images captured by the plurality of image cameras 140 on one screen. have.

The image camera 140 is mounted inside or outside the vehicle and is electrically connected to the second switching unit 163. When the second switching unit 163 is turned on, the image camera 140 is driven by receiving power from the second battery SB. In addition, the image camera 140 is electrically connected to the digital image recorder 130 and outputs an image signal to the digital image recorder 130.

Here, the image camera 140 is preferably formed of a CCD camera. When parking a vehicle, it is often nighttime, and the CCD camera provides a clear picture quality at night to facilitate the identification of objects. On the other hand, CMOS cameras have the advantage of small current consumption, but it is very difficult to identify objects at night unless there is very bright lighting.Infrared cameras have high current consumption and reflect light around the lens by their own light source. Because images are stored, it may be difficult to read traffic signals or identify objects.

In addition, the resolution of the image camera 140 may be 100,000 pixels to 5 million pixels, it may be composed of a plurality. Since the image camera 140 consumes more power as the resolution is higher, the image camera 140 having a higher resolution consumes more power of the second battery SB and the digital signal has a constant storage capacity due to a large amount of information of the image signal. The storage time of the image recorder 130 is shortened. Therefore, the image camera 140 preferably has a resolution selected from the range of 100,000 pixels to 1 million pixels. When the resolution of the image camera 140 is less than 100,000 pixels, the ability to identify objects may be degraded due to the inability to identify objects, and when the resolution exceeds 1 million pixels, power consumption may increase and the second battery may be used when the vehicle is parked. The power of (SB) may be consumed too quickly, causing a quick discharge.

The first power distribution module 150 includes a first voltage setting unit 151, a first voltage comparing unit 152, and a first switching unit 153.

The first voltage setting unit 151 is electrically connected to the first battery MB to set a current consumption ban voltage of the first battery MB. The first voltage setting unit 151 may be formed of a passive device capable of lowering a DC voltage, such as a variable resistor.

The first voltage comparison unit 152 compares the current consumption prohibition voltage set by the first voltage setting unit 151 with the voltage of the first battery MB to determine the current consumption prohibition voltage of the first voltage setting unit 151. Output signal when voltage is exceeded. The first voltage comparator 152 may compare a reference voltage applied to the operational amplifier with a current consumption inhibit voltage using a voltage comparator such as an operational amplifier, and then output a signal when the comparison value is exceeded.

The first switching unit 153 is turned off when the signal is output from the first voltage comparator 152 to cut off power between the first battery MB and the digital image recorder 130. In addition, the first switching unit 153 serves to electrically connect the first battery MB and the digital image recorder 130 when the signal is not output to the first voltage comparing unit 152. The first switching unit 153 may be formed of a switching device having a switching function such as a large current relay 110, a bipolar transistor, and a field effect transistor. That is, the first switching unit 153 serves to supply power to the digital image recorder 130 by electrically connecting the first battery MB and the digital image recorder 130.

The first power distribution module 150 is electrically connected between the first battery MB and the digital image recorder 130 so that the first battery (only up to the current consumption inhibited voltage set in the first voltage setting unit 151). MB) power to the digital image recorder 130. That is, the first power distribution module 150 serves to prevent the discharge of the first battery MB.

In this case, the first power distribution module 150 may be a value in which the current consumption prohibition voltage value of the first battery MB is set between 10.8 V and 12.3 V, and the first battery MB and the digital image recorder 130. It is preferable to cut off the power supply. As illustrated in the present embodiment, the first power distribution module 150 is a lead acid battery, a NaS battery, or a Calcium battery, and when the voltage falls below a voltage of less than 10.5 V, there is a risk of being discarded because it is not recharged. That is, the first power distribution module 150 sets the lower limit value of the current consumption inhibiting voltage of the first battery MB to 10.8 V to protect the first battery MB. In this case, the first battery MB is a driving source electrically connected to the motor M to start the vehicle, and prevents the vehicle from being started due to the discharge of the first battery MB. Do it. In addition, by setting the upper limit value of the current consumption inhibiting voltage to 12.3 V in a season such as winter when the discharge of the first battery MB is easy, discharge of the first battery MB can be prevented in advance.

The second power distribution module 160 includes a second voltage setting unit 161, a second voltage comparing unit 162, and a second switching unit 163.

The second voltage setting unit 161 is electrically connected to the second battery SB to lower and set the voltage of the second battery SB. The second voltage setting unit 161 may be formed in the same configuration as the first voltage setting unit 151.

The second voltage comparison unit 162 compares the voltage set by the second voltage setting unit 161 with the voltage of the second battery SB to determine a signal when the set voltage of the second voltage setting unit 161 exceeds the reference voltage. Outputs The second voltage comparator 152 may be formed in the same configuration as the first voltage comparator 152.

The second switching unit 163 is turned off when the signal is output from the second voltage comparator 162 to cut off the power between the second battery SB and the digital image recorder 130 and the second voltage comparator 162. The second battery SB and the digital image recorder 130 are electrically connected when the signal is not output. The second switching unit 163 may be formed in the same configuration as the first switching unit 153.

The second power distribution module 160 is electrically connected between the second battery SB and the image camera 140, and the second battery SB is only up to the current consumption inhibited voltage set in the second voltage setting unit 161. ) Supplies power to the digital image recorder 130. That is, the second power distribution module 160 prevents the discharge of the second battery SB.

In this case, the second power distribution module 160 sets the voltage value of the second battery SB to any one value set between 10.8V and 12.3V. Power can be cut off. The second battery SB is a lead acid battery or a NaS battery or a Calcium battery that is auxiliary mounted for the image camera 140. That is, the second battery SB is a battery irrelevant to the starting of the vehicle and can operate the image camera 140 inside the vehicle even when the vehicle is not parked. The second power distribution module 160 disconnects power between the first battery MB and the second power distribution module 160 when the current consumption prohibition voltage of the second battery SB is less than 10.8 V. The discharge of the battery SB is prevented. In addition, the second power distribution module 160 may be set so that the current consumption prohibition voltage of the second battery SB does not exceed 12.3 V, so that the image camera 140 may not be turned off too soon.

Hereinafter, the operation and effects related to the operation of the vehicle image recording apparatus will be described, and will be described by dividing the case where the driver turns on the vehicle and starts the vehicle.

[When starting up]

First, the driver in the vehicle flowers the key to the key box 120 to allow the first contact 123 and the second contact 124 to conduct. Then, the motor M is driven by receiving electric power from the first battery MB, and the generator G starts to generate power by the rotation of the engine E. FIG. In this case, the high current relay 110 is magnetized by the conduction of the first contact 123 and the second contact 124 so that the a contact 111 and the b contact 112 are in a conductive state. Therefore, the first battery MB and the second battery SB are charged by the generator G. In this case, each of the first power distribution module 150 and the second power distribution module 160 receives power from the generator G, the first battery MB, and the second battery SB. Accordingly, the digital image recorder 130 and the image camera 140 are driven by receiving power from the first power distribution module 150 and the second power distribution module 160, respectively. Then, the digital image recorder 130 receives the image signal output from the image camera 140 and records the image of the inside or outside of the vehicle.

[When start-up is off]

When the driver removes the key 121 from the key box 120 when the vehicle is parked or stopped, the digital image recorder 130 draws power from the first power distribution module 150. In this case, the first power distribution module 150 supplies the power of the first battery MB to the digital image recorder 130 only up to the current consumption inhibiting voltage set in the first voltage setting unit 151, and prevents the current consumption inhibiting voltage. When the voltage of the first battery MB decreases, the electrical connection between the first battery MB and the digital image recorder 130 is cut off. Therefore, the first battery MB is prevented from being discharged by the first power distribution module 150.

In addition, when the vehicle is parked or stopped, the image camera 140 draws power from the second power distribution module 160. Since the image camera 140 receives power from the second power distribution module 160, the image camera 140 may be driven for a long time without starting the vehicle. In addition, since the image camera 140 uses power only up to the current consumption inhibiting voltage set in the second voltage setting unit 161, it is possible to prevent the discharge of the second battery SB.

Here, the digital image recorder 130 and the image camera 140 record the internal or external image of the vehicle with the power source set differently. The reason for this is to record for a long time even when the vehicle is parked. The digital image recorder 130 consumes between 2W and 20W of instantaneous power consumption for recording a digital image. This power consumption is occupied by the power consumption of circuits responsible for digital image processing and compression, and by the driving of auxiliary storage devices such as hard disks for storing compressed images. The image camera 140 has an instantaneous power consumption of approximately 1W to 3W when the resolution is 360,000 pixels. When four image cameras 140 are installed at four front, rear, left and right sides of the vehicle, total power consumption of the image cameras 140 corresponds to about 3W to 12W. Therefore, since the instantaneous power consumption of the digital image recorder 130 and the image camera 140 corresponds to a maximum of about 30W, the digital image recorder 130 and the image cameras 140 are driven using a single battery as in the related art. In this case, in the battery of 12V-80AH, which is often used in a conventional passenger vehicle, discharge is performed in about 5 hours.

On the other hand, in the vehicle image recording apparatus 100 according to an embodiment of the present invention, the first battery MB supplies power to the digital image recorder 130, and the second battery SB is connected to the image camera 140. It will supply power. Therefore, the vehicle equipped with the vehicle video recording apparatus 100 according to an embodiment of the present invention, the driver parks between 8 o'clock and 11 o'clock in the evening of the weekday, and at 6 o'clock in the morning for the next day's work. Until 8 o'clock, the digital image recorder 130 and the image camera 140 may be operated. That is, the vehicle image recording apparatus 100 detects and records a movement occurring inside or outside the vehicle at the time, and thus records recorded video such as an accident around the vehicle or a damage of the vehicle or a crime occurring outside the vehicle. It can be used as.

In addition, when the vehicle image recording apparatus 100 is continuously operated during the time period, the vehicle image recording apparatus 100 of the vehicle may set current prohibition voltages of the first battery SB and the second battery MB. Since only the current consumption prohibited voltage is supplied to the digital image recorder 130 and the image camera 140, discharge of the first battery MB and the second battery SB is prevented. Here, when the capacity of the first battery (MB) is 12V-80AH and the capacity of the second battery (SB) is 12V-40AH, the current consumption inhibited voltage of the first power distribution module 150 and the second power distribution module. When the setting state of the current consumption prohibition voltage of the 160 is adjusted within the range of the desired voltage, the operating time of the digital image recorder 130 and the plurality of image cameras 140 that are written to the vehicle during parking of the vehicle may be up to 40 hours. It becomes operational.

In the present exemplary embodiment, the digital image recorder 140 is connected to the first battery MB and the image camera 140 is connected to the second battery SB. However, the first battery MB is connected to the image camera ( The second battery SB may be connected to the digital image recorder 130.

Hereinafter, a configuration, a coupling relationship, and a role of a vehicle video recording apparatus according to another embodiment of the present invention will be described.

2A is a block diagram of a vehicle video recording apparatus according to another embodiment of the present invention. FIG. 2B is a partial block diagram showing in more detail the periphery of the digital video recorder of the vehicular video recording device shown in FIG. 2A.

As illustrated in FIGS. 2A and 2B, the vehicle image recording apparatus 200 according to another embodiment of the present invention may include a first battery MB, a second battery SB, a generator G, and a motor M. FIG. , A high current relay 110, a key box 120, a digital image recorder 230, an image camera 240, a first power distribution module 250, and a second power distribution module 260. In the present embodiment, the high current relay 110 will be described as an example of the switching means. In addition, in the present embodiment, the first battery MB, the second battery SB, the generator G, the motor M, the large current relay 110, and the key box 120 will not be redundantly described. In this embodiment, the digital image recorder 230, the image camera 240, the first power distribution module 250 and the second power distribution module 260 will be described.

The digital image recorder 230 includes an image processing circuit 231, a central processing unit 232, a main memory device 233, an auxiliary memory device 234, a control unit 245, a microphone 246, and an audio processing circuit ( 247).

The image processing circuit 231 is electrically connected to the image camera 240 to convert an analog image signal output from the image camera 240 into a digital signal.

The CPU 232 is electrically connected to the image processing circuit 231. The central processing unit 232 captures and compresses the digital video signal output from the image processing circuit 231 for each playback frame, and transmits the compressed video signal to the auxiliary memory device 234 to digitally store the digital video signal to the auxiliary memory device 234. It plays a role of storing image signal in file format. The CPU 232 may compress an image signal using MPEG-1, MPEG-2, MPEG-4, JPEG, H.264, or the like.

In addition, the CPU 232 is electrically connected to a control unit 245 such as an input button or a mouse, and outputs an image of the image processing circuit 231 to a monitor by a signal input from the control unit 245. Functions such as stopping, playing, and repeating a video can be implemented.

In addition, the CPU 232 may be electrically connected to the voice processing circuit 247, and may store the voice signal output from the voice processing circuit 247 in the auxiliary memory device 234 in the form of a file. That is, the central processing unit 232 detects not only the internal and external images of the vehicle but also the audio signal and stores them in the auxiliary memory device 234, thereby ensuring information on both the image and the audio.

In addition, when the central processing unit 232 compresses the same image without the change between the frames of the image input from the image camera 240, storing the recorded image in the auxiliary memory device 234 until the change of the image occurs. By inhibiting the operation, the auxiliary memory device 234 is set to the standby mode state. That is, the central processing unit 232 enters the standby mode when there is no movement of the object outside the vehicle, and returns to the recording mode when the movement of the object is detected outside the vehicle. That is, when there is no change between frames of the image input from the image camera 240, the central processing unit 232 is set to the standby mode until the change of the image occurs, thereby reducing the average power consumption of the vehicle image recording apparatus. do.

The main memory 233 is electrically connected to the central processing unit 232 and is a place where the central processing unit 232 temporarily stores the image signal output from the image processing circuit 231.

The auxiliary memory device 234 is electrically connected to the central processing unit 232 and may be formed of a hard disk (HDD) or a solid state disk (SSD). Hard disks or solid state disks are 2.5 inches in size and are used for notebooks, which are three times more bootable and access time than HDDs, and solid state disks (SSDs) are more resistant to shocks than hard disks. With robust durability, it can instantaneously consume power of 0.7W to 1.1W. The auxiliary memory device 234 is configured to minimize power consumption of the first battery MB so that the vehicle image recording device can be operated for a long time. That is, the auxiliary memory device 234 is preferably formed of a hard disk (HDD) or a large capacity solid state disk (SSD) in order to operate the first battery MB for a long time even when the vehicle is parked.

The controller 245 is electrically connected to the central processing unit 232. The control unit 245 is an input device such as a push button, a keyboard, and a mouse, and outputs a signal to the central processing unit 232 by a driver's operation to stop, play, and repeat a moving image of the central processing unit 232. It plays a role in controlling the function of.

The microphone 246 is electrically connected to the voice processing circuit 247, and receives the sound generated from the inside or outside of the vehicle and outputs the sound as an electric signal.

The voice processing circuit 247 is electrically connected to the microphone 246, and digitizes an electric signal output from the microphone 246 to deliver a digital signal to the central processing unit 232.

The digital image recorder 230 having the above configuration is mounted in the vehicle and electrically connected to the first switching unit 253. The digital image recorder 230 is driven by receiving power from the first battery MB when the first switching unit 253 is turned on. The digital image recorder 230 includes an image processing circuit 231 which receives an analog image signal from the image camera 240 and converts the analog image signal into a digital image, and the central processing unit 232 compresses the converted digital image to hard disk. Recording to the auxiliary storage device 234, such as. In this case, the digital image recorder 230 has power consumption of the central processing unit 232 which is in charge of digital image processing and compression, and instantaneous power consumption of the auxiliary memory device 234 for storing the compressed image. to be. In addition, the digital image recorder 230 may be electrically connected to the plurality of image cameras 240, and may have a multiple image segmentation function to display a plurality of images captured by the plurality of image cameras 240 on one screen. have. In addition, the digital image recorder 230 may include a microphone 246 and an audio processing circuit 247 to record not only an image of the inside or outside of the vehicle but also to record sound generated from the inside or outside of the vehicle. .

The image camera 240 is mounted inside or outside the vehicle and is electrically connected to the second switching unit 163. When the second switching unit 163 is turned on, the image camera 240 is driven by receiving power from the second battery SB. In addition, the image camera 240 is electrically connected to the digital image recorder 230 and outputs an image signal to the digital image recorder 230.

In addition, the image camera 240 is composed of a plurality, each image camera 240 may have a resolution of 100,000 to 5 million pixels. Since the image camera 240 consumes more power as the resolution is higher, the image camera 240 with a higher resolution consumes more power of the second battery SB, and the digital signal has a constant storage capacity due to a large amount of information of the image signal. The storage time of the image recorder 230 is shortened. Therefore, the image camera 240 preferably has a resolution selected from the range of 100,000 pixels to 1 million pixels. When the resolution of the image camera 240 is less than 100,000 pixels, the ability of identifying objects may be degraded, and thus the utilization of information may be reduced. When the resolution exceeds 1 million pixels, the power of the second battery SB may increase due to an increase in power consumption. Can be consumed too quickly causing a fast discharge.

The first power distribution module 250 includes a first voltage setting unit 251, a first voltage comparing unit 252, and a first switching unit 253.

The first voltage setting unit 251 is formed to include a first dip switch 251a and a first variable resistor unit 251b.

The first dip switch 251a has a plurality of contacts electrically connected to the first battery MB. The first dip switch 251a is configured to allow the driver to physically turn on or off the switch. That is, the first dip switch 251a sets the current consumption inhibit voltage of the first battery MB applied to the first voltage comparator 252 according to the setting value of the variable resistor.

The first variable resistor unit 251 b is configured in plural to be electrically connected to the plurality of contacts of the first dip switch 251 a, and sets the resistance value of the first dip switch 251 a.

Here, the first voltage setting unit 251 sets the current consumption inhibited voltage by the first dip switch 251a and the first variable resistor unit 251b. 1 The reason why the variable resistor unit 251b is configured in plural numbers is that the current consumption prohibition voltage is set differently according to the current consumption of the digital image recorder 230 or the initial voltage of the battery distributed in the market. This is to use the digital image recorder 230 for a longer time.

The first voltage comparator 252 is formed to include a first operational amplifier 252a, a first voltage drop resistor 252b, and a first zener diode 252c.

In the first operational amplifier 252a, a voltage detection terminal 252a1 for setting a current consumption inhibiting voltage is electrically connected to the first dip switch 251a, and the reference voltage terminal 252a2 is connected to the first voltage drop resistor 252a. 252b). The first operational amplifier 252a outputs a signal to the switching element of the first switching unit 253 when the current consumption inhibited voltage set in the voltage detection terminal 252a1 exceeds the reference voltage of the reference voltage terminal 252a2. Do it.

The first voltage drop resistor 252b is electrically connected between the reference voltage terminal 252a1 of the first operational amplifier 252a and the first battery MB. In addition, the first voltage drop resistor 252b is electrically connected to the first zener diode 252c. The first voltage drop resistor 252b applies a voltage of the first battery MB to a reference voltage of the first operational amplifier 252a to determine a comparison target of the first operational amplifier 252a.

The first zener diode 252c is electrically connected between the first voltage drop resistor 252b and the ground terminal. The first zener diode 252c serves to protect the first operational amplifier 252a by absorbing a surge voltage flowing through the resistance of the first voltage.

The first voltage comparison unit 252 compares the current consumption inhibited voltage set in the voltage detection terminal 252a1 of the first operational amplifier 252a with the reference voltage of the first battery MB set in the reference voltage terminal 252a2. And outputs a signal to the first switching element 253a of the first switching unit 253 when the current consumption prohibition voltage of the voltage detection terminal 252a1 of the first operational amplifier 252a exceeds the reference voltage. .

The first switching unit 253 includes a first switching element 253a, a first switching circuit 253b, and a second switching circuit 253c.

The first switching element 253a is a junction transistor. The base end of the first switching element 253a is electrically connected to the first operational amplifier 252a and turned on by receiving a signal output from the first operational amplifier 252a. The collector of the first switching element 253a is electrically connected to the positive terminal of the first battery MB, and the emitter is electrically connected to the ground terminal of the first battery MB. Here, resistors for matching the driving voltage of the base, the collector, and the emitter are provided around the first switching element 253a. Although the first switching element 253a has been described with reference to the junction transistor, for example, the first switching element 253a may also be formed as a field effect transistor or an IGBT element.

The first switching circuit 253b includes a power supply terminal 253b1, a signal input terminal 253b2, an output terminal 253b3, and a feedback terminal 253b4. The power terminal 253b1 receives power from the first battery MB to drive the switching circuit 253b. When the signal input terminal 253b2 is electrically connected to the first switching element 253a and receives a high level signal output from the first switching element 253a, the signal input terminal 253b2 turns on the switching circuit 253b to the output terminal 253b3. Output the current. In addition, the signal input terminal 253b2 turns off the switching circuit 253b when the low level signal output from the first switching element 253a is applied to block the current output to the output terminal 253b3. . The feedback stage 253b4 is electrically connected to the digital image recorder 230 and receives a voltage of the digital image recorder 230 to maintain a constant voltage so that the voltage of the output terminal 253b3 does not change. Herein, the output terminal 253b3 changes the output voltage of the first battery MB to a voltage of 3V so that the image processing circuit 231, the central processing unit 232, the main memory device 233 of the digital image recorder 230, Power is supplied to the control unit 245, the microphone 246, and the audio processing circuit 247.

Here, the first switching circuit 253b has an output terminal 253b3 having an image processing circuit 231, a central processing unit 232, a main memory 233, a control unit 235, a microphone 236, and an audio processing circuit ( 237) is electrically connected to a power of approximately 3V.

The second switching circuit 253c has the same configuration, operation, and coupling relationship as the first switching circuit 253b. That is, like the first switching circuit 253b, the second switching circuit 253c includes a power supply terminal 253c1, a signal input terminal 253c2, an output terminal 253c3, and a feedback terminal 253c4. The difference from 253b is that the output terminal 253c3 is electrically connected to the auxiliary memory device. The second switching circuit 253c outputs a voltage of approximately 5V to the auxiliary memory device 234 at the output stage output terminal 253c3.

As described above, the switching circuits 253b and 253c may be configured in plural. The reason why the plurality of switching circuits 253b is configured is to supply power required by the digital image recorder 230 to various values so that the digital image recorder 230 can operate smoothly. The switching circuits 253b and 253c are preferably formed of an application specific semiconductor (ASIC) that has a fast switching operation and always performs a constant operation with respect to an input.

The first power distribution module 250 is electrically connected between the first battery MB and the digital image recorder 230 so that only the first battery (up to the current consumption inhibited voltage set in the first voltage setting unit 251) is discharged. MB) power to the digital image recorder 230. That is, the first power distribution module 250 serves to prevent the discharge of the first battery MB. In addition, the first power distribution module 250 supplies a constant voltage to supply stable power to the digital image recorder 230, thereby improving the stability of the digital image recorder 230.

The second power distribution module 260 includes a second voltage setting unit 261, a second voltage comparing unit 262, and a second switching unit 263.

The second voltage setting unit 261 includes a second dip switch 261a and a second variable resistance unit 261b.

The second dip switch 261a may be formed in the same configuration as the first dip switch 251a. The second dip switch 261a is electrically connected to the second battery SB and is applied to the second voltage comparator 262 according to the resistance setting value of the second variable resistor part 261b. ) To set the current consumption prohibited voltage.

The second variable resistor part 261b is configured in plural to be electrically connected to the plurality of contacts of the second dip switch 261a, respectively, and sets the resistance value of the second dip switch 261a.

Here, the second voltage setting unit 261 includes a plurality of variable resistors, and the current consumption prohibition voltage is set differently according to the current consumption of the image camera 240 or the initial voltage of the battery distributed in the market. The digital image recorder 230 may be used for a longer time when the vehicle is stopped or parked.

The second voltage comparison unit 262 includes a second operational amplifier 262a, a second voltage drop resistor 262b, and a second zener diode 262c. The second voltage comparator 262 may be formed to have the same configuration as the first voltage comparator 252.

In the second operational amplifier 262a, a voltage detection terminal 262a1 for setting a current consumption inhibiting voltage is electrically connected to the second dip switch 261a, and the reference voltage terminal 262a2 is connected to a second voltage drop resistor (2). 262b). The second operational amplifier 262a outputs a signal to the switching element of the second switching unit 263 when the current consumption inhibited voltage set in the voltage detection terminal exceeds the reference voltage of the reference voltage terminal.

The second voltage drop resistor 262b is electrically connected between the reference voltage terminal 262a2 of the second operational amplifier 262a and the second battery SB, and is electrically connected to the second zener diode 262c. The voltage of the second battery SB is applied to the reference voltage of the second operational amplifier 262a to determine the comparison target of the second operational amplifier 262a.

The second zener diode 262c is electrically connected between the second voltage drop resistor 262b and the ground terminal to absorb a surge voltage flowing through the second voltage drop resistor 262b to absorb a second operational amplifier. Serves to protect (262a).

The second voltage comparison unit 262 compares the current consumption inhibited voltage set in the voltage detection terminal 262a1 of the second operational amplifier 262a with the reference voltage of the second battery SB set in the reference voltage terminal 262a2. When the current consumption prohibition voltage of the voltage detection terminal 262a2 of the second operational amplifier 262a exceeds the reference voltage, the signal is output to the second switching element of the second switching unit 263.

The second switching unit 263 is formed to include a second switching element 263a and a power supply relay 263b.

The second switching element 263a is a junction transistor. The base end of the second switching element 263a is electrically connected to the second operational amplifier 262a and is turned on by receiving a signal output from the second operational amplifier 262a. The collector of the second switching element 263a is electrically connected to the positive terminal of the second battery SB and the core 263b3 of the power supply relay 263b, and the emitter is electrically connected to the ground terminal of the second battery SB. Connected. Here, resistors for matching the driving voltage of the base, the collector, and the emitter are provided around the second switching element 263a. Although the second switching element 263a has been described with reference to the junction transistor, for example, the second switching element 263a may also be formed as a field effect transistor.

The power supply relay 263b includes a main contact 263b1, an auxiliary contact 263b2, and a core 263b3. The main contact 263b1 is electrically connected to the positive terminal of the second battery SB, and the auxiliary contact 263b2 is electrically connected to the ground terminal. One end of the core 263b3 is electrically connected to the positive end of the second battery SB, and the other end of the core 263b3 is electrically connected to the collector of the second switching element 263a. The auxiliary contact 263b2 is electrically connected to the plurality of image cameras 240. Here, a capacitor for absorbing a surge voltage is electrically connected to the main contact 263b1 or the auxiliary contact 263b2 of the power supply relay 263b. The power supply relay 263b magnetizes the core 263b3 when the second switching element 263a is turned on to electrically connect the main contact 263b1 and the auxiliary contact 263b2. In this case, the power of the second battery SB is supplied to the image camera 240.

The second power distribution module 260 is electrically connected between the second battery SB and the image camera 240 so that the second battery SB is only up to the current consumption inhibited voltage set in the second voltage setting unit 261. ) Serves to supply power to the image camera 240. That is, the second power distribution module 260 serves to prevent the discharge of the first battery MB.

Hereinafter, the operation and effects related to the operation of the vehicle image recording apparatus 200 will be described, and the description will be made by dividing the case in which the driver turns on the vehicle and starts the vehicle.

[When starting up]

First, the driver in the vehicle flowers the key to the key box 120 to allow the first contact 123 and the second contact 124 to conduct. Then, the motor M is driven by receiving electric power from the first battery MB, and the generator G starts to generate power by the rotation of the engine E. FIG. In this case, the large current relay 110 is magnetized by the key, and the contact point 111 and the contact point 112 are in a conductive state. Therefore, the first battery MB and the second battery SB are charged by the generator G. In this case, each of the first power distribution module 250 and the second power distribution module 260 receives power from the generator G, the first battery MB, and the second battery SB. Power is supplied to the 230 and the auxiliary electronic device 140. Accordingly, the image camera 240 outputs an image signal to the digital image recorder 230, and the image camera 240 records all images after the vehicle is started.

[When start-up is off]

When the driver pulls out the key 121 at the time of parking or stopping of the vehicle, the core 263b3 of the large current relay 110 is filtered to bring the a contact 111 and the b contact 112 to be disconnected. Then, the first battery MB supplies power only to the first power distribution module 250, and the second battery SB supplies power only to the second power distribution module 260.

In this case, the digital image recorder 230 receives an image from each of the plurality of image cameras 240 and records the image of the indoor or outdoor of the parked vehicle. The digital image recorder 230 is driven using the power of the first battery MB in a state in which power management of the first power distribution module 250 is performed, and the image camera 240 is the second power distribution module 260. The power is driven by using the power of the second battery SB in a state of receiving power management. That is, the digital image recorder 230 and the image camera 240 distribute and use the power of the first battery BM and the second battery SB, so that the inside image or the outside of the vehicle can be stored for a longer time when the vehicle is parked. You can record images. In this case, the digital image recorder 230 receives the image of the image camera 240 and enters the power standby mode when there are no moving objects outside of the vehicle, thereby reducing power consumption of the auxiliary memory device. Accordingly, the digital image recorder 230 can record an image of the inside or outside of the vehicle for a longer time. In addition, the digital image recorder 230 records the audio in the auxiliary memory device 234 even when the vehicle is parked. The audio recording function of the digital image recorder 230 serves to secure information when a third party damages the vehicle. For example, when the third party scratches or damages the outside surface of the vehicle with a tool, the digital image recorder 230 obtains audio and video information so that the digital image recorder 230 can be used as evidence that can be submitted to the institution.

Meanwhile, in the first power distribution module 250, the current consumption prohibition voltage of the first operational amplifier 252a is set in a state in which the variable resistor values are set differently according to the tip manipulation set in the first dip switch 251b. At this time, the switching circuit 253b is turned on and supplies power to the digital image recorder 230 from the output terminal 253b3. Thus, the digital image recorder 230 continues to consume current. Then, when the first operational amplifier 252a corresponds to the voltage current consumption inhibited voltage of the first battery MB, the first operational amplifier 252a outputs a signal to the first switching element 253a to switch the first. The element 253a is turned off. Then, the switching circuit 253b is turned off and the power supplied from the first battery MB to the digital image recorder 230 is cut off. Therefore, the discharge of the first battery MB is prevented.

In addition, when the vehicle is parked or stopped, the core 263b3 of the high current relay 110 is activated to bring the a contact 111 and the b contact 112 off. Then, the first battery SB supplies power only to the first power distribution module 250, and the second battery SB supplies power only to the second power distribution module 260. In this case, the current consumption prohibition voltage of the second operational amplifier 262a is set in the second dip switch 261a with the variable resistance value set differently according to the tip operation. At this time, the second switching circuit 253b is a state in which power is applied by the turn-on state of the second switching element 263a, and is a state in which power is supplied from the output terminal 253b3 to the image camera 240. Thus, the image camera 240 continues to consume current. Then, when the second operational amplifier 262a corresponds to the voltage current consumption inhibited voltage of the second battery SB, the second operational amplifier 262a outputs a signal to the second switching element 263a to turn off the second switching element 263a. Then, the core 263b3 of the power supply relay 263b is filtered to disconnect the main contact 263b1 from the auxiliary contact 263b2. Then, the power supplied from the second battery SB to the image camera 240 is cut off. Therefore, the second battery SB is prevented from discharging.

As described above, the vehicular image recording apparatus 200 according to another embodiment of the present invention has a power supply for supplying power to the digital image recorder 230 and the image camera 240 even when the vehicle is turned off. Discharge of the first battery MB and the second battery SB can be prevented by supplying only the full discharge voltage of the MB and the second battery SB, and the first battery MB and the second battery SB. The power of may be properly distributed to the digital image recorder 230 and the image camera 240 to increase the operating time of the digital image recorder 230 and the image camera 240 for a long time. In addition, since the vehicle image recording apparatus 200 can record not only the inside and outside images of the vehicle but also the audio when the vehicle is parked, there is an effect of securing the evidence provided to the institution.

The above embodiments are not limited to the examples for carrying out the claims of the present invention, and do not limit the claims of the present invention.

1 is a block diagram of a vehicle video recording apparatus according to an embodiment of the present invention.

2A is a block diagram of a vehicle video recording apparatus according to another embodiment of the present invention.

FIG. 2B is a partial block diagram showing in more detail the periphery of the digital video recorder of the vehicular video recording device shown in FIG. 2A;

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

MB; First battery SB; Secondary battery

G; Generator M; motor

110; High current relay 120; Key box

130, 230; Digital video recorders 140, 240; Video camera

150, 250; First power distribution module 151, 251; First voltage setting section

152, 252; First voltage comparison sections 153 and 253; First switching unit

160, 260; Second power distribution module 161, 261; 2nd voltage setting part

162, 262; Second voltage comparison sections 163 and 263; Second switching unit

Claims (21)

An image photographing at least one of a first battery, a second battery, a generator charging the first battery and the second battery, a motor transmitting power to the generator for generating the generator, and an inside and an outside of the vehicle. A video recording apparatus for a vehicle, comprising a camera and a digital video recorder electrically connected to the video camera to record an image taken by the video camera. A first voltage setting unit electrically connected to the first battery to set the current consumption inhibiting voltage of the first battery, and comparing the current consumption inhibiting voltage set by the first voltage setting unit with the voltage of the first battery; A first voltage comparator which outputs a signal when the current consumption prohibition voltage of the first voltage setting part exceeds a reference voltage, and is turned off when the signal is output from the first voltage comparator, and thus power between the first battery and the digital image recorder; A first power distribution module including a first switching unit configured to block a signal and electrically connect the first battery and the digital image recorder when the signal is not output to the first voltage comparison unit; And A second voltage setting unit electrically connected to the second battery to set a current consumption ban voltage of the second battery, and comparing the voltage set by the second voltage setting unit with the voltage of the second battery to compare the voltage; A second voltage comparator for outputting a signal when the set voltage exceeds a reference voltage, and the second voltage comparator is turned off when the signal is output from the second voltage comparator to cut off power between the second battery and the digital image recorder; And a second power distribution module including a second switching unit electrically connecting the second battery and the image camera when a signal is not output to the second voltage comparison unit. The first voltage setting unit may include a first dip switch having a plurality of contacts electrically connected to the first battery; And a plurality of first variable resistance parts configured to be electrically connected to a plurality of contacts of the first dip switch, respectively, and to set resistance values of the first dip switch. The dip switch is configured to include a current consumption prohibition voltage of the first battery according to a set value of the variable resistor. The first switching unit receives a signal output from the first voltage comparator and is turned on, and detects a current consumption of the digital image recorder when the first switching element is turned on, thereby applying a constant voltage to the main electronic device. It is formed including a switching circuit applied to, The second voltage setting unit may include a second dip switch having a plurality of contacts electrically connected to the second battery; And a second variable resistor unit configured to be electrically connected to a plurality of contacts of the second dip switch, respectively, and to set a resistance value of the second dip switch. And a dip switch to set a current consumption ban voltage of the second battery according to a set value of the variable resistor, The second switching unit may include a second switching device that is turned on by receiving a signal output from the second voltage comparator, and is electrically connected to the second switching device and turned on when the second switching device is turned on. It is formed to include a power supply relay for applying power to the camera, And the digital image recorder is set to a standby mode until a change in image occurs when there is no change between frames of an image input from the image camera, thereby reducing the average power consumption. delete delete The method of claim 1, Switching means provided between the first battery and the second battery; And And a key box which turns on the switching means when the vehicle starts to electrically connect the first battery and the second battery. delete delete delete The method of claim 1, The digital video recorder is a video recording device for a vehicle, characterized in that for recording the sound of the inside and outside of the vehicle. The method of claim 1, The digital image recorder may be an auxiliary memory device which is a storage medium for recording an image; It is formed to include more The auxiliary memory device is a vehicle video recording device, characterized in that formed of a hard disk (HDD) or a solid state disk (SSD) for notebooks. delete The method of claim 1, The first power distribution module cuts off the power supply of the first battery and the main electronic device to any one of the voltage set value of the first battery is set between 10.8V and 12.3V. Recording device. The method of claim 1, The second power distribution module cuts off power of the first battery and the extended electronic device to any one of the voltage set value of the second battery between 10.8V and 12.3V. Device. delete delete delete The method of claim 1, And a plurality of switching circuits, the plurality of switching circuits output different voltages. delete delete delete delete delete

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