JP4265124B2 - Drive recorder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a drive recorder, and more particularly to an improvement for configuring a touring navigation system by effectively using components required for the drive recorder.
[0002]
[Prior art]
The present applicants are a drive for collecting and accumulating various kinds of information required for situation analysis in the event of an accident in the vehicle via an ultra-wide-angle lens in the vehicle, various sensors installed in the vehicle, etc. As a recorder, several drive recorders as disclosed in JP-A Nos. 2000-21557, 2001-45438, and 2001-122163 have already been proposed.
[0003]
In both cases, images inside and around the vehicle taken with an ultra-wide-angle lens installed in the vehicle are recorded for a predetermined time before or after the occurrence of an impact due to an accident, and analysis of the situation at the time of the accident, etc. It has various functions that are effective for.
[0004]
[Problems to be solved by the invention]
However, the function of this type of drive recorder is effectively used only when an accident actually occurs, and the opportunity to make use of this function is extremely rare.
[0005]
On the other hand, in order to configure a drive recorder, a super-wide-angle lens for photographing, a CPU, and various storage means (ROM, RAM, nonvolatile memory, etc.) are required. Because it is necessary to drive the device stably to the end independently of other in-vehicle devices, it is difficult to use these optical components and electronic components with other in-vehicle devices, and these components are also effective during normal driving There is a strong demand to use it.
[0006]
OBJECT OF THE INVENTION
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a touring navigation system that effectively uses parts required for a drive recorder and includes a bidirectional communication function between a plurality of vehicles. It is in providing the drive recorder which can also be utilized.
[0007]
[Means for Solving the Problems]
The present invention provides an ultra-wide-angle lens for photographing a scene inside and outside a vehicle, an image processing unit for converting an image photographed by the super-wide-angle lens into digital data and outputting the digital data, and an output from the image processing unit. In order to achieve the above object, a drive recorder comprising a recorder main body for storing digital data images in time series,
Bi-directional communication means for performing bi-directional communication with drive recorders of other vehicles, a display for displaying images, and bi-directional communication means for displaying the latest image of digital data output from the image processing unit A main control unit for transmitting to the drive recorder of another vehicle via the two-way communication means and displaying an image from the drive recorder of the other vehicle received on the display Possess ,
The main control unit obtains information from a sensor that detects a driving state of the vehicle from another in-vehicle control device through an in-vehicle local area network, and transmits the information to a drive recorder of another vehicle through the bidirectional communication unit. On the other hand, there is provided other vehicle driving information backup means for accumulating sensor information from the drive recorder of the other vehicle received via the bidirectional communication means in time series. ,
The other vehicle driving information backup means identifies and accumulates driving information from a plurality of other vehicles for each vehicle, and the driving information of the vehicle whose collision has been confirmed among the accumulated driving information for each vehicle. Data update is prohibited and the accumulated data is retained. It has the structure characterized by this.
[0008]
According to such a configuration, it is possible to always check the latest image taken with the super-wide-angle lens by using a display installed in another vehicle, particularly during touring performed using a plurality of vehicles. In addition, two-way communication between a plurality of vehicles using images can be realized.
In addition, since the bi-directional communication function is realized by using the super wide-angle lens and main control unit equipped in the drive recorder, compared to the case of manufacturing dedicated equipment for realizing equivalent bi-directional communication, The development cost and manufacturing cost of the apparatus can be greatly reduced.
In addition, since information from the sensors that detect the driving state of the vehicle is accumulated redundantly in the drive recorders of the host vehicle and other vehicles, the vehicle and the drive recorder may be completely damaged in the event of an accident. Even in this case, it becomes possible to extract the driving information of the accident vehicle from the drive recorder of another vehicle, and the original reliability of the drive recorder is improved in each stage. .
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a drive recorder of the present invention will be described in detail with reference to the drawings.
[0018]
FIG. 1 is a functional block diagram showing an outline of the configuration of a drive recorder 1 according to an embodiment to which the present invention is applied. FIG. 2 shows the periphery of an instrument panel of a vehicle equipped with the drive recorder 1 according to this embodiment. It is the shown front view.
[0019]
As shown in FIG. 1, the main part of the drive recorder 1 that also serves as a touring navigation system is an ultra-wide-angle lens 2 for photographing a scene inside and outside the vehicle, and converts an image photographed by the super-wide-angle lens 2 into digital data. And an image processing unit 3 for outputting, and a recorder body 4 for storing digital data images output from the image processing unit 3 in time series.
[0020]
The recorder body 4 is connected to an in-vehicle LAN (local area network) 5 for transmitting information from various sensors for detecting the driving state of the vehicle to the recorder body 4, and includes an accelerator opening sensor 6, a vehicle speed sensor 7, a seat. Information detected by the belt wearing state confirmation sensor 8 is input to the recorder body 4 via the in-vehicle LAN 5 via the other in-vehicle control devices such as the engine control device 19 and the airbag control device 20. ing. In order to detect the driving state of the vehicle, it is also possible to add another in-vehicle control device to the in-vehicle LAN 5.
[0021]
The GPS (car navigation system using satellite communication) 9 constitutes the current position measuring means in the present embodiment, and is connected to the in-vehicle LAN 5 in the same manner as the various sensors described above. The current position and map information around the current position are read into the recorder main body 4 via the in-vehicle LAN 5.
[0022]
The recorder body 4 has a main control unit 10 including a CPU for arithmetic processing, a ROM storing a control program, a RAM used for temporary storage of arithmetic data, and the like, and is driven and controlled according to the ROM control program. By the processing of the CPU, the information from the accelerator opening sensor 6, the vehicle speed sensor 7, and the seat belt wearing state confirmation sensor 8 is sampled at predetermined intervals via the in-vehicle LAN 5, and the image output from the image processing unit 3 is sampled. Together with the digital data and information on the current time from a clock device (not shown), the information is stored in time series in the storage means 11 including a nonvolatile memory.
[0023]
However, since the storage capacity of the storage means 11 is limited, the data that is actually accumulated is a predetermined time before the occurrence of an impact due to an accident or a predetermined time before and after the occurrence of an impact.
[0024]
The inertial sensor 12 functions as a sensor for detecting a vehicle collision, and outputs a collision signal to the recorder body 4 when a very rapid negative acceleration generated by the vehicle collision is detected. .
[0025]
In this embodiment, when the recorder body 4 detects a collision signal from the inertial sensor 12, the main control unit 10 performs sampling processing of information from the sensors 6, 7, and 8 and the image processing unit 3 The sampling processing of the image from the above and the sampling processing of the current time from the clock device are stopped, and the data sampled at a predetermined time before the occurrence of the accident is held in the storage means 11 as it is.
[0026]
In addition, by applying the technique already proposed by the present applicants in Japanese Patent Application Laid-Open No. 2000-21557, it is possible to store data for a predetermined time before and after the occurrence of the accident.
[0027]
A display 13 for displaying an image, a communication circuit 14 functioning as a bidirectional communication means for performing bidirectional communication with a drive recorder of another vehicle, and a single drive recorder as a target of bidirectional communication Alternatively, the user interface 15 such as a keyboard constituting a part of the plurality of communication target setting means specified is a component unique to the present embodiment.
[0028]
Among these, for example, the display 13 is mounted at an easily viewable position on the instrument panel 16 as shown in FIG. 1, and a user interface 15 such as a keyboard is also mounted substantially in parallel with the display 13. A booster 17 for supplying driving power to the display 13 is provided on the back side of the instrument panel 16.
[0029]
In addition, the super wide-angle lens 2 serving as a photographing unit is desirably installed on the lower side of the room mirror 18 as shown in FIG. 2 in order to accurately photograph a scene inside and outside the vehicle. The super wide-angle lens 2 can be freely adjusted in its posture, in other words, the photographing region by applying the technique disclosed in Japanese Patent Laid-Open No. 2001-122163.
[0030]
FIG. 3 is a flowchart showing an outline of a call target setting process executed by the CPU provided in the main control unit 10, FIG. 4 is a flowchart showing an outline of a data sampling process executed by the CPU, and FIGS. Is a flowchart showing an outline of a data reception process performed by the CPU, and FIG. 7 is a flowchart showing an outline of a data transmission process executed by the CPU. Each process is performed at predetermined intervals by the multitask function of the CPU. It is repeatedly executed almost in parallel.
[0031]
Next, referring to the flowcharts of FIGS. 3 to 7, other vehicle current position display means, other vehicle driving information backup means, communication target setting means, and main control that functions as control means for the display 13 and the communication circuit 14. The processing operation of the unit 10 will be described in detail.
[0032]
First, the processing operation of the CPU as the communication target setting means will be described with reference to FIG.
[0033]
The CPU that has started the call target setting process first determines whether or not an identification code for specifying a drive recorder that is a target of two-way communication is input via the user interface 15 by a passenger's operation. (Step a1). This identification code is a unique value for each drive recorder.
[0034]
When the determination result of step a1 is true, that is, when it is determined that an identification code for specifying the drive recorder to be communicated is input, the CPU as the communication target setting means This identification code is temporarily stored, and the response request signal and the identification code (identification code of the drive recorder 1) that the identification code has is transmitted to the drive recorder having the identification code via the communication circuit 14 (step a3).
[0035]
Next, the CPU sets the response waiting time measurement timer T to the response waiting time to start (step a4), sets the response waiting flag F1 to a value 1 indicating a response waiting state (step a5), and step It is determined whether or not a response signal from the drive recorder corresponding to the identification code temporarily stored in the process of a3 is input to the communication circuit 14 (step a6).
[0036]
If the determination result in step a6 is false, that is, if it is determined that no response signal is input, the CPU further completes the grace time set in the response grace time measurement timer T. (Step a7), and if the grace time is not completed, the call target setting process in the cycle is terminated as it is, and the call target setting process in the next cycle is followed by steps a1, step a2, and so on. The determination process of step a6 and step a7 is repeatedly executed to wait for the response signal from the drive recorder corresponding to the identification code temporarily stored in the process of step a3.
[0037]
On the other hand, the response request signal and the identification code transmitted from the drive recorder 1 in the process of step a3 as described above are data as shown in FIG. 7 executed by the CPU of another drive recorder specified as the communication target. In the transmission process, the CPU of the drive recorder detected in the determination process of step d2 and specified as the communication target temporarily stores the identification code of the transmission source included in the received data (step d6), and the drive having this identification code To the recorder, in short, to the drive recorder 1 that has output the response request signal, the response signal and its own identification code are transmitted (step d7).
[0038]
However, if the other drive recorder specified as the communication target is not activated, or if the other drive recorder specified as the communication target is outside the communicable range, it is specified as the communication target. Since the response request signal from the drive recorder 1 is not detected by another drive recorder, the response signal is not transmitted from the other drive recorder specified as the communication target.
[0039]
While the determination process of step a1, step a2, step a6, and step a7 is repeatedly executed by the CPU on the drive recorder 1 side, the determination result of step a6 becomes true, and the identification code temporarily stored in the process of step a3 When the response signal from the drive recorder corresponding to is confirmed, the CPU as the communication target setting means increments the value of the code registration index i initialized to 0 when the power is turned on by 1 (step a8). The value of the identification code temporarily stored in the process of step a3 is registered at the position of the address i of the communication target registration file as shown in FIG. 9 (step a9), and transmitted from the drive recorder having this identification code. The other vehicle driving information storage file Di for storing the information to be stored is generated in the storage means 11 (step a 0), it updates the value of the registration code number storage register n with an initial value 0 to the current value of the code registration index i (step a11).
An outline of the structure of the other vehicle driving information storage file Di is shown in FIG. The other vehicle driving information storage file Di is a main part of the other vehicle driving information backup means.
[0040]
Next, the CPU divides the other vehicle image display area of the display 13 as shown in FIG. 8 into n equal parts according to the value of the registered code number storage register n, so that the other vehicle transmitted from another drive recorder. An area for displaying the image data is set, and the value of the identification code registered this time is displayed at the bottom of the area corresponding to the area (step a12), and the response waiting flag F1 is reset. (Step a13), the call target setting process of the cycle is terminated.
[0041]
Thereafter, in the same manner as described above, by inputting the identification code of the desired drive recorder as a call target, the value of the code registration index i and the value of the registered code number storage register n are sequentially incremented, and the newly entered identification An area for displaying the image data of the other vehicle is newly registered in the position of the address i of the communication target registration file whose code value is updated, and the other vehicle image display area of the display 13 is newly divided into n equal parts. Will be set. FIG. 8 shows an example in which three identification codes are set as communication targets, and the other vehicle image display area is divided into three equal parts.
[0042]
On the other hand, if the determination result in step a7 is true, that is, even if the delay time of the response delay time measurement timer T has elapsed, the response from the drive recorder corresponding to the identification code temporarily stored in the process of step a3 If it is determined that no signal is input, this means that communication with the drive recorder corresponding to this identification code is impossible, so the CPU substantially performs steps a8 to a12. The call target setting process is not executed, and the identification code is prohibited from being registered in the communication target registration file.
[0043]
In this case, the CPU displays a message indicating that communication with the drive recorder of the identification code is impossible for a predetermined time on the display 13 (step a14), resets the response waiting flag F1 (step a15), The call target setting process of the cycle is terminated.
[0044]
Of course, even in such a case, when an appropriate identification code is input again, the identification code can be registered in the communication target registration file.
[0045]
When the determination result of step a1 is false and the determination result of step a2 is true, the identification code setting input operation is not performed, and a response request signal for confirming the communication state is also exchanged. This means that the call target setting process is not executed.
[0046]
Next, the outline of the sampling process of the driving information by the CPU will be described with reference to the data sampling process of FIG.
[0047]
The CPU that has started the data sampling process first determines whether or not a collision signal is input from the inertial sensor 12 (step b1). If no collision signal is input, a collision has already occurred. It is determined whether or not the collision detection flag F2 indicating that it is present is set (step b2). In a normal driving state where no accident has occurred, the determination result of step b1 is false, and the determination result of step b2 is true.
[0048]
Therefore, the CPU reads information from the accelerator opening sensor 6, the vehicle speed sensor 7, and the seat belt wearing state confirmation sensor 8 via the in-vehicle LAN 5, and also includes digital data of an image output from the image processing unit 3, and After reading the current time information and the current position information measured by the GPS 9 (step b3), the value of the data registration index j is incremented by 1 (step b4). It is determined whether or not the current value has reached the total number m of records in the operation information storage file as shown in FIG. 11 (step b5).
[0049]
If the current value of the data registration index j does not reach the total number m of records in the operation information storage file, the CPU holds the value of the index j as it is, and the value of the index j exceeds the total number m of records. In this case, the value of the index j is initialized to 1 again (step b6), and these data are stored at the position of the address j in the driving information storage file (step b7).
[0050]
As a result of repeatedly executing such processing, the driving information storage file as shown in FIG. 11 always accumulates the latest m sampling data related to the driving state of the vehicle and stores them in time series. Will be.
[0051]
When a collision signal from the inertial sensor 12 is detected, the CPU stores all identification codes stored as communication targets at addresses 1 to n of the communication target registration file as shown in FIG. A collision signal indicating the occurrence of a collision and an identification code held by itself are transmitted to all the drive recorders corresponding to these identification codes (step b8), and a collision detection flag F2 is set (step b9). Then, the data sampling process in the cycle is finished.
[0052]
When the collision detection flag F2 is set in this way, the processing from step b3 to step b7 in the data sampling process after the collision occurs is not executed. Specifically, m times of sampling data before the occurrence of the collision is held in the driving information storage file of FIG. 11 as it is.
[0053]
On the other hand, the collision signal and the identification code transmitted in the process of step b8 are the determination process of step d3 in the data transmission process as shown in FIG. 7 executed by each CPU of the other drive recorder set as the communication target. The CPU of the other drive recorder detected and set as a communication target temporarily stores the identification code of the transmission source included in the received data (step d8), and in short, an accident occurs. The collision flag is set in the record of the driving information storage file corresponding to the identification code of the vehicle drive recorder (step d9).
[0054]
Next, the processing operation of the CPU as the other vehicle current position display means and the other vehicle driving information backup means will be described with reference to the data reception processing of FIGS.
[0055]
When the data reception process is started, the CPU as the map image display function realizing unit first reads the current position of the vehicle measured by the GPS 9 and map information around the current position via the in-vehicle LAN 5, and FIG. A map around the current position of the host vehicle and the current position of the host vehicle are displayed in the current position display area of the display 13 as shown in FIG.
[0056]
Next, the CPU registers one or more identification codes of other drive recorders to be communicated with the drive recorder 1 in the communication object registration file as to whether or not the value of the registered code number storage register n is 0. It is determined whether or not (step c2).
[0057]
Here, when the determination result of step c2 is true, that is, when the value of the registration code number storage register n is 0, the identification code of the other drive recorder to be communicated is the communication object registration file. Therefore, it is not necessary to display the image from the drive recorder of the other vehicle, the driving information of the other vehicle, and the current position of the other vehicle. Accordingly, in this case, the CPU terminates the data reception process in the cycle with the processes after step c3 not executed. Therefore, no substantial data reception processing is performed, and only the current position of the own vehicle and a map around the current position of the own vehicle are displayed and updated on the display 13 (displayed in the other vehicle image display area). Leave blank because there is nothing to do).
[0058]
On the other hand, if the determination result in step c2 is false, it means that at least one or more identification codes of other drive recorders to be communicated are registered in the communication object registration file.
[0059]
In this case, the CPU determines whether or not the data reception standby flag F3 indicating prohibition of interruption for data exchange with another vehicle is set (step c3), and the data reception standby flag F3 must be set. For example, the code search index k having an initial value 0 is incremented by 1 (step c4).
[0060]
Next, the CPU determines whether or not the value of the code search index k exceeds the value of the registered code number storage register n (step c5), and the value of the code search index k sets the value of the registered code number storage register n. If it does not exceed, the value of the index k is kept as it is, and if the value of the index k exceeds the registered code number n, the value of the index k is initialized to 1 again (step c6), and the code With reference to the address of the communication target registration file corresponding to the current value of the search index k, it is determined whether or not the collision flag is set in the record at this address (step c7).
[0061]
As already described, the setting of the collision flag for the record of the communication target registration file is performed by the process of step d9 described above.
[0062]
When the determination result of step c7 is false, that is, when it is clear that another vehicle equipped with the drive recorder having the identification code registered at address k of the communication target registration file has not caused a collision accident or the like The CPU sends a data request signal and its own identification code (identification code of the drive recorder 1) to the drive recorder having the identification code registered at the address k of the communication target registration file via the communication circuit 14. (Step c8), a value 1 indicating a data reception waiting state is set in the data reception waiting flag F3, and an interruption to communication processing is prohibited (step c9).
[0063]
Next, the CPU determines whether or not data from the drive recorder that is the transmission target of the data request signal, that is, the drive recorder having the identification code registered at the address k of the communication target registration file is input to the communication circuit 14. (Step c10) If the data is not input, the data reception process of the cycle is terminated as it is, and the current position of the vehicle and the surrounding map of the vehicle in step c1 in the data reception process after the next cycle. The update display process and the determination process of step c2, step c3, and step c10 are repeatedly executed, and the process waits for the input of data from the drive recorder that requested the data transmission in the process of step c8.
[0064]
On the other hand, the data request signal and the identification code transmitted from the drive recorder 1 in the process of step c8 as described above are executed by the CPU of another drive recorder having the identification code specified in the process of step c8. The CPU of the drive recorder having the specified identification code detected in the determination process of step d1 in the data transmission process as shown in FIG. 7 temporarily stores the transmission source identification code included in the received data (step d4). Referring to the current value of the data registration index j, the data stored in the address j from the driving information storage file as shown in FIG. 11, that is, the accelerator opening sensor 6, the vehicle speed sensor 7, and the seat belt wearing state confirmation Latest detection information of the sensor 8, digital data of the latest image output from the image processing unit 3, and Read the latest information on the time and the latest information on the current position of the vehicle measured by the GPS 9 and temporarily store the identification code in step d2, and in other words, for the drive recorder 1 that has output the data request signal, The latest data and the identification code held by itself are transmitted (step d5).
[0065]
While the processing of step c1, step c2, step c3, and step c10 is repeatedly executed by the CPU on the drive recorder 1, the determination result of step c10 becomes true, and the data request signal is transmitted in step c8. When the reception of data from the drive recorder corresponding to the identified identification code is confirmed, the CPU determines the value of the data registration index P (k) of the other vehicle driving information storage file Dk corresponding to the current value of the code search index k. Is incremented by 1 (step c11), and it is determined whether or not the current value of the indicator P (k) has reached the total number m of records in the other vehicle driving information storage file Dk as shown in FIG. 10 (step c12). If the current value of the data registration index P (k) does not reach the total number m of records, the value of the index P (k) is held as it is, If the value of P (k) exceeds the total number m of records, the value of the index P (k) is reinitialized to 1 (step c13), and the address P (k) of the other vehicle driving information storage file Dk. These latest data are stored in the position (step c14).
[0066]
Next, the CPU as the other vehicle current position display means uses the digital data of the image and the latest information of the current position among the latest data stored in the process of step c14 and is registered at the address k of the communication target registration file. The image of the other vehicle image display area on the display 13 corresponding to the identification code is updated and displayed, and the current position of the other vehicle equipped with the drive recorder having the identification code registered at the address k of the communication target registration file Is updated and displayed in correspondence with the coordinates of the map on the display 13 (step c15), the data reception standby flag F3 is reset (step c16), and the data reception process in the cycle ends.
[0067]
Therefore, for example, if the current value of the code search index k is 1, a data request signal is sent to the drive recorder having the identification code 1 registered at the first address (k = 1) of the communication target registration file. The drive recorder of the identification code 1 that is output and receives this data request signal sends the latest detection information of the accelerator opening sensor 6, the vehicle speed sensor 7, and the seat belt wearing state confirmation sensor 8 to the drive recorder 1, and the image processing unit. The latest image digital data output from 3, the latest time information, and the latest information on the current position measured by the GPS 9 are transmitted. The latest information from the drive recorder is used as another vehicle driving information backup means for the drive recorder with the identification code 1. Address of the storage file D1 P (1) will be stored in the position +1.
[0068]
The value of the data registration index P1 that designates the address of the other vehicle driving information storage file D1 is incremented by 1 in the range of 1 ≦ P1 ≦ m (or 1 each time the latest information from the drive recorder with the identification code 1 is received). As a result, in the other vehicle driving information storage file D1, the latest m sampling data transmitted from the drive recorder of the identification code 1 is always accumulated and stored in time series. Will be.
[0069]
Further, since the value of the code search index k is incremented by 1 (or initialized to 1) within a range of 1 ≦ k ≦ n, the k-th address (k = 1) of the communication target registration file as shown in FIG. To n), the other vehicle operation information storage file Dk (k = 1 to n) as shown in FIG. 10 dedicated to each drive recorder is assigned to all of the drive recorders of the identification code k (k = 1 to n) registered. ) And a data registration index P (k) (k = 1 to n) dedicated to each drive recorder, the same processing as described above is performed.
[0070]
Therefore, the driving information of the other vehicle equipped with the drive recorder having the identification code registered in the communication target registration file is stored in the other vehicle driving information storage file individually provided in the storage means 11 of the drive recorder 1. It is always updated and held every m times. Further, the current position of the other vehicle and the condition of the room of the other vehicle are displayed on the display 13 of the drive recorder 1 and the image of the other vehicle each time these data are transferred to the drive recorder 1 and read. In the area, as shown in FIG. 8, it is always updated and displayed.
[0071]
On the other hand, if the determination result in step c7 is true, that is, if an identification code for which a collision flag is set in the record of the communication target registration file is detected, the drive recorder having this identification code is recorded. Since the data request signal is not transmitted (the process of step c8 is not executed), the update of the data for the other vehicle driving information storage file Dk that has been confirmed to be in a collision is automatically prohibited. The latest m times of sampling data transmitted from the car is held in the other-vehicle driving information storage file Dk as it is.
[0072]
Therefore, for example, even if the drive recorder mounted on the vehicle in which the accident occurred is seriously damaged or burned out, the various types of drive recorders immediately before the accident occurred from the drive recorders of other vehicles communicating with the vehicle. Sensor data, image data, and the like can be collected.
[0073]
In addition, as shown in FIG. 12, the GPS 9, the inertial sensor 12, the communication circuit 14, and the booster 17 are integrally mounted in the recorder body 4, more specifically, in the housing of the recorder body 4. Also good.
[0074]
If such a configuration is applied, sharing between the display 13 of the drive recorder 1 and the display required for the GPS 9, sharing between the user interface 15 of the drive recorder 1 and the user interface required for the GPS 9, Since the storage means 11 of the drive recorder 1 and the storage means required for the GPS 9 can be shared, and the shortening of the cable connecting these devices is also achieved, the drive recorder 1 and the GPS 9 are included. The entire apparatus can be made compact and the manufacturing cost can be reduced.
[0075]
In the configuration shown in FIG. 1 and FIG. 12, the example in which the communication circuit 14 as the bidirectional communication means is installed as a dedicated circuit has been described, but a commercially available mobile phone or the like can be used as the communication circuit 14. is there. In that case, in the embodiment shown in FIG. 1 and FIG. 12, an interface for connecting a mobile phone is installed instead of the communication circuit 14. Since the existing infrastructure is used, the development cost and manufacturing cost of the entire apparatus can be reduced.
[0076]
【The invention's effect】
According to the drive recorder of the present invention, it is possible to mutually confirm the latest images inside and outside the vehicle photographed with an ultra-wide-angle lens, using a display installed on another vehicle. Thus, two-way communication between a plurality of vehicles using an image can be realized at the time of touring or the like performed.
In addition, since the bi-directional communication function is realized by using the super wide-angle lens and main control unit equipped in the drive recorder, compared to the case of manufacturing dedicated equipment for realizing equivalent bi-directional communication, The development cost and manufacturing cost of the apparatus can be greatly reduced.
[0079]
In addition, other vehicle driving information backup means is provided in the main control unit so that information from the sensor for detecting the driving state of the vehicle is redundantly stored in the drive recorder of the own vehicle and the other vehicle. Even if the vehicle and the drive recorder are completely damaged in the event of an accident, the driving information of the accident vehicle can be extracted from the drive recorder of another vehicle, and the original reliability of the drive recorder is improved in each stage. .
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing an outline of a configuration of a drive recorder according to an embodiment to which the present invention is applied.
FIG. 2 is a front view showing the periphery of a front panel of a vehicle equipped with the drive recorder of the embodiment.
FIG. 3 is a flowchart showing an outline of a call target setting process performed by a CPU provided in the main control unit of the drive recorder.
FIG. 4 is a flowchart showing an outline of a data sampling process performed by the CPU.
FIG. 5 is a flowchart showing an outline of a data reception process performed by the CPU.
FIG. 6 is a continuation of the flowchart showing the outline of the data reception process.
FIG. 7 is a flowchart showing an outline of a data transmission process performed by the CPU.
FIG. 8 is a conceptual diagram showing a display example of a display.
FIG. 9 is a conceptual diagram showing the structure of a communication target registration file.
FIG. 10 is a conceptual diagram showing the structure of another vehicle driving information storage file.
FIG. 11 is a conceptual diagram showing the structure of an operation information storage file.
FIG. 12 is a functional block diagram showing an outline of the configuration of a drive recorder according to another embodiment to which the present invention is applied.
[Explanation of symbols]
1 Drive recorder
2 Super wide-angle lens
3 Image processing section
4 Recorder body
5 In-vehicle LAN (local area network)
6 Accelerator opening sensor (sensor that detects the driving state of the vehicle)
7 Vehicle speed sensor (sensor that detects the driving state of the vehicle)
8 Seat belt wearing state confirmation sensor (sensor that detects the driving state of the vehicle)
9 GPS (current position measurement means)
10 Main control unit
11 Storage means (main part of other vehicle driving information backup means)
12 Inertial sensor
13 Display
14 Communication circuit (bidirectional communication means)
15 User interface (main part of communication target setting means)
16 Instrument panel
17 Booster
18 room mirror
19 Engine control device (other in-vehicle control device)
20 Airbag control device (other in-vehicle control device)

Claims (1)

An ultra-wide-angle lens for photographing a scene inside and outside the vehicle, an image processing unit for converting an image photographed by the super-wide-angle lens into digital data and outputting the digital data, and digital data output from the image processing unit In a drive recorder equipped with a recorder body for storing images in time series,
Bi-directional communication means for performing bi-directional communication with a drive recorder of another vehicle, a display for displaying an image, and the latest image of digital data output from the image processing unit are transmitted to the bi-directional communication means. via one of transmitting to the drive recorder of another vehicle, and a main control unit for displaying an image from the drive recorder of the other vehicles received via said bidirectional communication means to said display,
The main control unit obtains information from a sensor that detects a driving state of the vehicle from another in-vehicle control device through an in-vehicle local area network, and transmits the information to a drive recorder of another vehicle through the bidirectional communication unit. On the other hand, comprising other vehicle driving information backup means for accumulating sensor information from the drive recorder of the other vehicle received via the bidirectional communication means in time series ,
The other vehicle driving information backup means identifies and accumulates driving information from a plurality of other vehicles for each vehicle, and the driving information of the vehicle whose collision has been confirmed among the accumulated driving information for each vehicle. The drive recorder is characterized in that the data update is prohibited and the accumulated data is retained .

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