KR20110111890A - Device of running data record of vehicle - Google Patents

Abstract

Disclosed is a vehicle driving and image data recording apparatus capable of preventing a driver from manipulating vehicle driving data at a high level and clarifying the cause of an accident when an accident occurs. Such a vehicle driving and image data recording apparatus includes a power supply unit supplying power to a vehicle, an image recording unit collecting image data photographed from at least one camera attached to the vehicle, a driving recording unit detecting driving data according to a driving state of the vehicle, And a control unit for storing the image data collected by the image recording unit and the driving data detected by the driving record unit and outputting them to the outside, and an output unit for outputting the image data and the driving data together according to a control signal of the controller.

Description

Vehicle operation and image data recording device equipped with counterfeiting, modulation and loss prevention means {Device of running data record of vehicle}

The present invention relates to a vehicle driving and image data recording apparatus, and more particularly, to prevent a driver from manipulating vehicle driving and image data at a high level, and to prevent vehicle driving and image data from being lost due to an impact or a fire. The present invention relates to a vehicle driving and image data recording apparatus equipped with counterfeit modulation and loss prevention means capable of quickly and clearly identifying the cause of an accident.

In general, a vehicle such as a bus or a truck is provided with a tachograph for recording a driving speed and a mileage of a vehicle and a driving habit of a driver. The tachograph consists of a combination of a clock, a speedometer, and a odometer, so that you can know the speed at each moment and the distance traveled between two times, so that you can check the speed violation and the driver's working condition. Since 1997, Korea has been obliged to equip all vehicles for transportation business.

In recent years, a video recorder (video recorder) has been used to record, record and store images of the front or surroundings of a vehicle or a driver in a vehicle such as a taxi or a bus. These video recording devices are used as very important data to identify the cause and responsibility of the accident because it records the situation at the time of the accident.

In particular, when driving information such as vehicle speed, acceleration, or steering wheel angle and driving time measured by a tachograph is compared with video data recorded by a video recorder, the cause and Accurately judging errors can prevent us from being wrong.

The present invention relates to a vehicle driving and image data recording apparatus comprising such a driving recorder and an image recording apparatus. Conventional vehicle driving and image data recording apparatuses generally have various problems because the driving recorder and the image recording apparatus are configured as separate devices each having a separate case. That is, since the driving recorder and the image recording device are made of separate devices, a lot of space is required for installing them and the installation work is complicated. In addition, since various electronic components such as a main processing apparatus and a memory must be separately installed in each apparatus, there is a problem in that the price is increased due to the redundant use of the components. In addition, in the related art, the driving record recorded on the driving recorder and the video record recorded on the video recording device are displayed and stored separately, so that the driving record and the video record are complicated to compare the video record and the driving record at the time of an accident. Not only does it take a long time to identify the cause of the accident because it has to be combined, but there is also the possibility of forging or tampering with the data in the process. In addition, since the conventional vehicle driving and image data recording apparatus stores data in an external memory, there may be a problem that a driver or the like deliberately damages data that is disadvantageous to the driver. In addition, there was a problem that the memory stored in the driving and image recording is damaged during a car accident such as a crash or fire.

The present invention is to solve the problems according to the prior art, the main object of the present invention is to lower the price by reducing the number of overlapping parts by mounting the driving recorder and the image recording device in one case as well as It is to provide a vehicle driving and image data recording apparatus equipped with counterfeiting, tampering and loss prevention means to minimize the space required for installing them.

Another object of the present invention is to process the driving data of the driving recorder and the image data of the image recording device in one main processing device, and output and store the vehicle operation data and the image data together to quickly and clearly cause the accident when an accident occurs. The present invention provides a vehicle driving and image data recording device equipped with counterfeiting, tampering, and loss prevention means that enable identification and prevent a driver from deliberately forging or tampering with data.

Another object of the present invention is to further install a built-in memory inside the case, to store the driving record and video record at the time of the accident to prevent data loss by the driver, etc. It is to provide a vehicle driving and video data recording apparatus having a forgery, tampering and loss preventing means for preventing the loss of driving and video recordings by a fire or the like by providing a protective means for protecting the memory from impact.

The vehicle driving and image data recording apparatus according to the present invention includes a power supply unit connected to a battery of a vehicle and supplying power, an image recording unit collecting image data photographed from at least one camera attached to the vehicle, and a sensor of the vehicle. In the vehicle driving and image data recording apparatus including a driving recorder for collecting the driving data according to the driving state of the vehicle,

The image recording unit includes a mux for combining and outputting video or audio signals photographed by the plurality of cameras, a codec for converting video or audio signals into digital signals, and processing and outputting the digital signals. And a flash memory card connected to the image processing apparatus;

The driving recorder includes a main processor for processing signals input from the plurality of sensors, a communication unit connected to the main processor, a display, an input unit, and a memory unit;

The image recording unit and the driving recording unit are provided in one main PCB installed in one case, and the image processing apparatus of the image recording unit is connected to the main processing apparatus and input from the image data and the sensor output from the image recording unit. It is characterized in that the driving data to be processed together in the main processing device and then displayed on the display of the driving record or stored together with the memory unit.

In the present invention, the memory unit is composed of an external memory and an internal memory, the internal memory is installed inside the case, a protection member for protecting the internal memory from impact and fire is installed around the internal memory do.

The protective member. An upper case and a lower case which form an inner space in which the internal memory is installed and have ventilation holes formed therein; And an insulating pad interposed between the upper and upper cases of the memory substrate and the lower and lower cases of the memory substrate, and an insulating nonwoven fabric disposed on the bottom of the upper case and the bottom of the lower case and coated with a hydrophobic material. .

A guide groove is formed between the edge of the upper case and the lower case of the protection member, and the main PCB is formed with a cutout through which the protection member is inserted through the guide groove. Connection plugs for coupling with the formed connection terminals are mounted.

The front PCB is installed vertically on the front surface of the case, and the front PCB is provided with an RF reader unit for reading necessary information from an ID card carried by the driver.

A new reference voltage level is generated by dividing the voltage level of the square wave signal to accurately recognize the square wave signal regardless of the difference in the voltage level of the square wave signal input from various sensors. Thereafter, a square wave signal automatic recognition unit is further provided to compare the reference voltage level with the square wave signal and output a new square wave signal to the main processing device.

The square wave signal automatic recognition unit includes a branch unit for generating a square wave signal identical to the square wave signal input from various sensors, and a voltage divider unit for reducing the voltage level to 1/2 without changing the waveform of the square wave signal branched from the branch unit. And a comparator for recognizing the square wave signal by comparing the charge / discharge unit for smoothing the voltage level of the square wave signal output from the voltage divider with the reference voltage level output from the charge / discharge unit and the square wave signal input from the sensor. And a logic input circuit for outputting a new square wave signal to the main processing device based on the signal recognized by the comparator.

The vehicle driving and image data recording apparatus according to the present invention stores and displays the image data and the driving data together, so that the cause of the accident can be clearly identified when an accident occurs, and the central processing unit and the processing data for processing the image data are processed. The central processing unit and main PCB are used in common, so the structure of the product is simple and parts can be omitted, thus reducing the cost of the product.

In addition, since the internal memory mounted inside and the external memory detachable outside are provided together, the driver can be prevented from intentionally tampering with data, and the memory stored inside the case protects the memory from external force, fire or moisture. This prevents the loss of records stored in the internal memory during a car accident.

In addition, since the present invention is provided with a square wave signal automatic recognition unit for automatically forming a reference voltage level for recognizing square wave signals input from various sensors and comparing them in real time, even when a square wave signal having an uneven voltage level is input thereto. Square wave signals can be recognized accurately.

1 is a schematic block diagram showing the configuration of a vehicle driving and image data recording apparatus according to the present invention;
2 is a functional block diagram showing a configuration of a square wave signal automatic recognition circuit according to the present invention;
3 is a graph showing a square wave signal and a reference voltage level signal according to the square wave signal automatic recognition circuit shown in FIG.
4 is a cross-sectional view showing a protective member for protecting an internal memory according to the present invention;
FIG. 5 is a perspective view illustrating a protection member shown in FIG. 4 and a main PCB in which the protection member is installed.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the vehicle driving and image data recording apparatus (hereinafter referred to as 'vehicle driving and image data recording apparatus') equipped with a forgery, modulation and loss prevention means according to the present invention do.

First, as shown in FIG. 1, a vehicle driving and image data recording apparatus 100 according to an exemplary embodiment of the present invention includes a driving recorder 10 storing a driving record of a vehicle in one case 1 and a vehicle. A video recorder 20 is provided for storing video records of video. In addition, the driving recorder 10 and the image recorder 20 are installed on one main PCB 2 installed inside the case 1.

The driving recorder 10 is electrically connected to an electronic control unit (ECU) 11 of the vehicle or various sensors 12 attached to the vehicle, and the image recording unit 20 is externally and internally of the vehicle. It is connected to a plurality of cameras 21 installed on. The sensor 12 includes a speed sensor that senses the speed of the vehicle and delivers an electrical signal, and a shock sensor that senses the shock and delivers a predetermined electrical signal when the vehicle is shocked from the outside. The camera 21 also includes a microphone for recording sound.

The video recording unit 20 combines the video or audio signals photographed by the plurality of cameras 21 and outputs them to one output line and a codec for converting the video or audio signals into digital signals. (Codec) 23, an image processing device 24 for controlling to process and output the digital signal, and a flash memory card 25 connected to the image processing device 24.

In addition, the driving recorder 10 includes a main processing device 13 connected to the electronic control device 11 of the vehicle or various sensors 12 installed in the vehicle to process and output a signal.

The main processing apparatus 13 is connected to the image processing apparatus 24 of the image recording unit 20 to output the image output from the image processing apparatus 24 and the electronic control apparatus 11 or various sensors 12. ) Serves to process the driving record output from

The driving recorder 10 may include a power supply unit 14, a communication unit 15, an RF reader unit 16, a display unit 17, an input unit 18, which are electrically connected to the main processing unit 13. An external memory 19 and an internal memory 30 are included. Preferably, the power supply unit 14 is connected to a vehicle battery (12-24V DC) through a connector to receive power. The communication unit 15 includes an external GPS 151, a USB 152, a CDMA 153, a WIFI 154, a printer 155, and the like. The communication unit 15 serves to receive necessary data from the outside or to provide the internal data to the outside.

The RF reader unit 16 is installed on the front PCB installed vertically on the front side of the case 1 to read necessary information from the ID card carried by the driver. For example, the RF reader unit 16 serves to confirm the identity of the driver and to record it. As described above, the present invention simplifies the structure and makes the driver's card easier to read by installing the RF reader unit 16 on the front PCB.

In addition, the display 17 and the input unit 18 display an image and driving record processed by the main processing unit 13 to the outside and input letters or numbers to perform a function that meets the user's request.

The external memory 19 and the internal memory 30 store images and driving records processed by the main processing device 13. For example, the external memory 19 stores the processed image and the driving record for a certain period of time, and the internal memory 30 stores only the processed image and the driving record for a predetermined time from before a certain event occurs. . As described above, the present invention separately installs the external memory 19 and the internal memory 30 and the internal memory 30 is installed inside the case 1 to prevent the driver or the like from deliberately damaging or modifying the contents stored in the memory. do. In addition, the present invention is installed in the periphery of the internal memory 30 to protect the memory from pressure or fire to prevent the record stored in the memory from being lost by shock or fire.

The main processing apparatus 13 according to the present invention is connected to the image processing apparatus 24 of the image recording unit 20 and the electronic control apparatus 11 or various sensors 12 of the driving recording apparatus 10. In addition, various driving records provided by the driving recording apparatus 10 are recorded and stored together with the image data provided by the image recording unit 20. That is, the main processing apparatus 13 encodes various driving data such as time, speed, and acceleration into the image frame data and stores the same in the user data area. Therefore, the time, speed, acceleration, etc. are simultaneously displayed at the bottom of the displayed image record. As such, since the driving record is simultaneously displayed in the video record according to the present invention, time for analyzing the cause of the accident in the event of an accident such as a car accident can be greatly reduced, and intentional forgery or tampering can be prevented.

On the other hand, the power supply unit 14 for supplying power to the vehicle further includes a capacitor (not shown) that can assist the power to prevent the power supply is cut off in the event of an accident. That is, the capacitor maintains a charging operation when supplying power to the vehicle, and then performs a discharge operation when the power of the vehicle is cut off so that the driving recorder 10 and the image recording unit 20 can maintain their function for a predetermined time. Make sure

1 and 2, a square wave signal automatic recognition unit 50 is further provided in the main PCB 2 of the vehicle driving and image data recording apparatus 100 according to the present invention. The square wave signal automatic recognition unit 50 is installed at the front end of the main processing unit 13 and performs a function of automatically recognizing a square wave signal transmitted from various sensors attached to the vehicle.

That is, since the square wave signal output from various sensors installed in the vehicle has a different voltage level of the square wave signal according to the battery voltage level of the vehicle or other situation, it is difficult to accurately recognize the square wave signal in the main processing device 13. have. For example, a reference voltage level is required to recognize a square wave signal. However, since only one reference voltage level is maintained to maintain a constant voltage level, a square wave signal having a relatively high or low voltage level cannot be recognized. have. Therefore, in order to accurately recognize a square wave signal whose voltage level changes, a new reference voltage level that can be applied regardless of the change in the voltage level of the square wave signal is required.

In view of this point, the present invention provides a square wave signal automatic recognition circuit 50 which automatically forms a new reference voltage level for recognizing a square wave signal according to a difference in voltage level of an input square wave signal. Can be legally input without external manipulation.

2 and 3, a signal having a high voltage level and a signal having a low voltage level are mixed in a square wave signal (see FIG. 3A) input from a sensor attached to a vehicle. The square wave signal automatic recognition unit 50 according to the present invention compares a square wave signal having a different voltage level with a new reference voltage level (refer to (c) of FIG. 3) and has a new square wave signal having a constant voltage level (FIG. 3d). Output).

To this end, the square wave signal automatic recognition unit 50 includes a branch 51 for branching a square wave signal identical to the square wave signal a input from various sensors, and a square wave signal branched from the branch 51. A voltage divider 53 for reducing the voltage level to 1/2 without changing the waveform, a charge / discharge unit 55 for smoothing the voltage level of the square wave signal output from the voltage divider 53, and the charge / discharge unit 55; Comparing unit 52 that recognizes the square wave signal by comparing the reference voltage level (c) output from the discharge unit 55 and the square wave signal (a) input from the sensor, and the signal recognized by the comparison unit 52 And a logic input unit 56 for outputting a new square wave signal d to the main processing unit 13 as a basis.

In addition, the front end of the branch 51 may be further provided with a protection circuit for filtering to remove noise and pull-up the high-level potential of the square wave signal. In addition, the front end of the charge / discharge unit 55 is further provided with a power drive buffer 54 for charging.

The square wave signal automatic recognition unit includes a branch unit for generating a square wave signal identical to the square wave signal input from various sensors, and a voltage divider unit for reducing the voltage level to 1/2 without changing the waveform of the square wave signal branched from the branch unit. And a comparator for recognizing the square wave signal by comparing the charge / discharge unit for smoothing the voltage level of the square wave signal output from the voltage divider with the reference voltage level output from the charge / discharge unit and the square wave signal input from the sensor. And a logic input circuit configured to output a new square wave signal to the main processing unit based on the recognition signal recognized by the comparator.

In the protection circuit, the filtered and high-level pulled-up square wave signal is inputted to the branch 51 to be divided into two square wave signals having the same voltage level. One square wave signal is provided to the comparator 52 and the other square wave signal is provided to the comparator 52 through the voltage divider 53, the buffer unit 54, and the charge / discharge unit 55. . The comparator 52 recognizes a square wave signal by comparing a reference voltage level generated using the square wave signal and the square wave signal.

The voltage divider 53 reduces the magnitude of the voltage in half without changing the waveform of the square wave signal. For example, the voltage divider 53 is formed of a variable resistor so that the square wave signal passing through the voltage divider 53 has a voltage level 1/2 of the original square wave signal a as shown in FIG. 3. Will be reduced.

Subsequently, the square wave signal b output from the voltage divider 53 is applied to the subsequent charge / discharge unit 55 through the power driving buffer 54 for charging. The charging / discharging unit 55 smoothes the voltage level of the spherical plate signal output from the buffer unit 54 and provides an output in which the envelope automatically changes according to the change of the pulse output voltage (FIG. c)).

In addition, an output from the charge / discharge unit 55 (ie, FIG. 3C) is applied to an input terminal of the comparator 52 and is applied to an original square wave signal (ie, applied from another input terminal of the comparator 52). , And compares the result of the comparison with that of FIG. The output of the comparison unit 52 is applied to the logic input unit 56, and the logic input unit 56 outputs a new rectangular plate signal having a constant voltage level. Therefore, according to the above configuration, the square wave signals having different voltage levels can be input through the same circuit without external operation without being affected by the difference in voltage levels used in the vehicle.

4 and 5 are cross-sectional views and perspective views showing an example of protection means installed in the periphery of the internal memory 30 according to the present invention to protect the memory from impact or fire. As shown, the internal memory 30 is mounted on a memory substrate 33 of a predetermined size, and the memory substrate 33 and the internal memory 30 are formed of an upper case 41a and a lower case 41b. The protection member 40 is installed inside.

The protection member 40 is made of a ceramic or heat-resistant reinforced plastic and a plurality of ventilation holes are formed to enable ventilation. The upper case 41a and the lower case 41b are formed to form an internal space having a predetermined size therein, and are coupled to each other by fastening means through interposing pads 42a and 42b therebetween.

Insulating nonwoven fabrics 47a and 47b are respectively installed in the upper case 41a and the lower case 41b. The insulating nonwoven fabrics 47a and 47b are nonwoven fabrics made of insulating fibers and coated with a hydrophobic material, and are capable of venting and blocking intrusion of flame or moisture from the outside. Preferably, the upper insulating nonwoven fabric 47a is attached to the bottom of the upper case 41a, and the lower insulating nonwoven fabric 47b is attached to the bottom of the lower case 41b.

In addition, guide grooves 47 are formed at predetermined intervals at both edges of the upper case 41a and the lower case 41b, and a predetermined width and length are formed at one side of the main PCB 2 in which the internal memory 30 is installed. The furnace cutout 2a is formed. Therefore, the protective member 40 is inserted into the cutout 2a through the guide groove 47. Then, the connection terminal 44 formed at the front end of the memory substrate 33 and the connection plug 48 provided in the main PCB 2 are coupled.

As described above, the protection member 40 according to the present invention is made of ceramic or reinforced plastic to protect the internal memory 30 from a strong impact applied from the outside. In addition, the protective member 40 and the insulating nonwoven fabric 46 installed therein protects the internal memory 30 from fire, and the insulating nonwoven fabric 46 is coated with a hydrophobic material so that water is introduced from the outside. Block it. In addition, the internal memory 30 and the protection member 40 are substantially separated through the cutouts 2a formed in the main PCB 2 and the thermal insulation pads 42a and 42 installed inside the protection member 40. It is installed so that the main PCB 2 does not affect the internal memory 30 even when the main PCB 2 is damaged by an impact or burned by heat.

Hereinafter, the control method of the vehicle driving and image data recording apparatus having the above configuration will be described in detail. In the vehicle driving and image data recording apparatus 100 according to the present invention, when the power is turned on from the power supply unit 14, the cameras 21 of the image recording unit 20 start photographing the surroundings of the vehicle, and the driving recorder 10 also operates. . Thereafter, the shock sensor 12 determines whether the shock is detected from the outside, and when it is determined that the shock is detected, the driving data such as time and speed are stored in the internal memory 30 in the image data when the shock occurs.

Thereafter, according to the user's selection, the display 17 outputs the video data at the time of the impact and the driving data such as time and speed. As such, when the video data at the time of the impact and the driving data such as time and speed are output together, it is possible to identify a clear cause of the accident.

1: Case 2: Main PCB
10: driving record 12: sensor
13: main processor 14: power supply
15: communication unit 16: RF reader unit
17: display 18: input unit
19: external memory 20: video recording unit
21: camera 30: internal memory
40: protective member 41: upper case and lower case
42: insulating pad 46: non-insulating fabric
47: guide groove 50: square wave signal automatic recognition unit
51: branch 52: comparison
53: voltage divider 55: charge / discharge part
56: logic input unit

Claims (7)

A power supply unit connected to the battery of the vehicle and supplying power, an image recording unit collecting image data photographed from at least one camera attached to the vehicle, and a driving unit connected to a sensor of the vehicle to collect driving data according to the driving state of the vehicle In the vehicle operation and image data recording apparatus comprising a recording unit,
The image recording unit includes a mux for combining and outputting video or audio signals photographed by the plurality of cameras, a codec for converting video or audio signals into digital signals, and processing and outputting the digital signals. And a flash memory card connected to the image processing apparatus;
The driving recorder includes a main processor for processing signals input from the plurality of sensors, a communication unit connected to the main processor, a display, an input unit, and a memory unit;
The image recording unit and the driving recording unit are provided in one main PCB installed in one case, and the image processing apparatus of the image recording unit is connected to the main processing apparatus and input from the image data and the sensor output from the image recording unit. And the driving data being processed together by the main processing apparatus and displayed on the display of the driving record unit or stored together with the memory unit. The method of claim 1,
The memory unit is composed of an external memory and an internal memory, the internal memory is installed inside the case, the vehicle is characterized in that the protection member for protecting the internal memory from impact and fire around the internal memory is installed Operation and video data recording device. The method of claim 2,
The protective member. An upper case and a lower case which form an inner space in which the internal memory is installed and have ventilation holes formed therein; a memory substrate on which the internal memory is mounted and installed in an inner space between the upper case and the lower case; An insulating pad interposed between an upper surface and an upper case of a memory substrate and a lower case and a lower case of the memory substrate, and an insulating nonwoven fabric provided on the bottom of the upper case and the bottom of the lower case and coated with a hydrophobic material. Vehicle operation and image data recording device characterized in that. The method of claim 3, wherein
A guide groove is formed between the edge of the upper case and the lower case of the protection member, and the main PCB is formed with a cutout through which the protection member is inserted through the guide groove, and the main PCB has a tip end of the memory substrate. Vehicle driving and image data recording device, characterized in that the connection plug is coupled to the connection terminal formed. The method of claim 1,
A front PCB is installed vertically on the front of the case, and the front PCB is provided with an RF reader unit for reading necessary information from the ID card carried by the driver. The method of claim 1,
A new reference voltage level is generated by dividing the voltage level of the square wave signal to accurately recognize the square wave signal regardless of the difference in the voltage level of the square wave signal input from various sensors. And a square wave signal automatic recognition unit for comparing the reference voltage level with the square wave signal and outputting a new square wave signal to a main processing device. The method of claim 6,
The square wave signal automatic recognition unit includes a branch unit for generating a square wave signal identical to the square wave signal input from various sensors, and a voltage divider unit for reducing the voltage level to 1/2 without changing the waveform of the square wave signal branched from the branch unit. And a comparator for recognizing the square wave signal by comparing the charge / discharge unit for smoothing the voltage level of the square wave signal output from the voltage divider with the reference voltage level output from the charge / discharge unit and the square wave signal input from the sensor. And a logic input circuit configured to output a new square wave signal to the main processing unit based on the recognition signal recognized by the comparator.

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