JP2015005127A - On-vehicle apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle apparatus capable of detecting a wobble driving in accordance with a driving condition.SOLUTION: When a large-sized vehicle 5 deviates from a white line 51 on the right side of the travel direction at a time t1, the number of deviations from white lines is increased and undated to a value 1. Then, when the large-sized vehicle 5 deviates from a white line 53 on the left side of the travel direction at a time t2, the number of deviations from white lines is undated to a value 2. Furthermore, when the large-sized vehicle 5 deviates from the white line 53 on the left side of the travel direction again at a time t3, the number of deviations from white lines is undated to a value 3. At the time when the number of deviations from white lines arrives at the value 3 as a criterion value, a wobble driving alarm 60 is issued.

Description

  The present invention relates to an on-vehicle device that detects a wobbling operation.

  Conventionally, some drive recorders detect wobbling operation. This drive recorder determines that the wobbling operation is present when the number of departures from the lane reaches a predetermined determination number.

  As this type of prior art, Patent Document 1 discloses the number of times that the host vehicle deviates from the line within a predetermined time (the number of times of wobbling with respect to the line). It is disclosed that it is determined to be low.

  Patent Document 2 discloses determining the driver's arousal level based on a calculation result obtained by multiplying the wobbling occurrence rate by a weighting factor for each wobbling occurrence factor.

JP 2002-56489 A JP 2008-225899 A

  However, if the number of determinations is uniformly set to a fixed value as in the past, the number of times that does not match the driving situation may be set, and the timing for detecting the staggered driving may not be appropriate. .

  In addition, when the driving time is long, the concentration is insufficient, and attention to safe driving tends to be distracted. In the case of a large vehicle, the continuous running time (hereinafter referred to as continuous running time) is set at 4 hours according to the Labor Standards Act. There is a need for a detection method for wobbling operation based on such continuous running time.

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the vehicle equipment which can detect the wobble driving | running | working suitable for the driving | running condition.

In order to achieve the above-described object, the vehicle-mounted device according to the present invention is characterized by the following (1) to (4).
(1) An on-vehicle device that is mounted on a vehicle and detects a wobbling operation,
When the number of times that the vehicle has deviated from the lane is greater than or equal to a set value determined according to the time for driving the vehicle, it is determined that the driving is staggered.
about.
(2) The vehicle-mounted device configured as described in (1) above,
The set value is set to a smaller value as the time for driving the vehicle becomes longer,
about.
(3) The vehicle-mounted device configured as described in (2) above,
After a first time point when the predetermined continuous time of the vehicle has passed, a continuous travel time alarm is issued, and a continuous travel time notice is issued after a second time point a predetermined time before the first time point. It has an alarm unit that issues an alarm
The set value is set to a different value in a period before the second time point, a period after the second time point and before the first time point, and a period after the first time point,
about.
(4) The vehicle-mounted device configured as described in (2) or (3) above,
The number of times that the vehicle has deviated from the lane and the set value are values per predetermined time.
about.

  According to the vehicle-mounted device having the configuration of (1) to (4) above, it is possible to set a setting value commensurate with the driving situation as a threshold value for determining the presence or absence of the wobbling driving.

  According to the present invention, since the set value corresponding to the driving situation is determined, the wobbling driving that matches the driving situation can be detected.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a block diagram showing a configuration of a drive recorder that is an in-vehicle device according to an embodiment of the present invention. FIG. 2 is a diagram showing the contents of a table in which the number of wobbling determinations corresponding to the continuous travel time is registered. FIG. 3 is a flowchart showing the procedure of the wobbling detection operation according to the embodiment of the present invention. FIG. 4 is a diagram illustrating the detection of the wobbling and the generation of the wobbling operation alarm.

  A vehicle-mounted device according to an embodiment of the present invention will be described with reference to the drawings. The vehicle-mounted device of the present embodiment is applied to a drive recorder mounted on a large vehicle.

  FIG. 1 is a block diagram showing a configuration of a drive recorder 10 that is an in-vehicle device of the present embodiment. The drive recorder 10 is mounted on a large vehicle 5 (see FIG. 4), and includes a CPU 11, a G sensor 12, a buzzer (BZ) 13, a ROM 14, a RAM 15, a timer 16, a card interface (I / F) 18, a speed I / F 19, An engine I / F 20, a camera I / F 21, and a power supply unit 22 are included.

  The CPU 11 includes a lane recognition calculation unit 25, a wobbling warning processing unit 26, and a continuous running warning processing unit 27, and controls the entire drive recorder 10.

  The ROM 14 stores a control program and a table 45 described later. The RAM 15 is used as a work area, and stores information such as the number of white line departures and the continuous running time described later. The timer 16 measures the continuous running time.

  The G sensor 12 senses an impact (acceleration) applied to the large vehicle (vehicle) 5. The buzzer (BZ) 13 (alarm unit) issues a continuous travel time warning, a continuous travel time alarm, a wobbling operation alarm, and the like. These alarms are distinguished by differences in buzzer sounds. If a warning lamp is provided in addition to the buzzer 13, the buzzer 13 may be sounded for a short time to keep the warning lamp on.

  A memory card 32 is detachably attached to the card I / F 18. The speed I / F 19 inputs a speed pulse output from the speed sensor and outputs it to the CPU 11. The engine I / F 20 receives an engine pulse output from the engine speed sensor and outputs it to the CPU 11. The camera I / F 21 is connected to a camera 31 that is installed in front of the vehicle and captures a front image during traveling. In addition, you may equip the camera which image | photographs the image of a side and back.

  The lane recognition calculation unit 25 performs image recognition processing on an image in front of the vehicle taken by the camera 31, and lanes (lanes) inside the two white lines 51 and 53 on the road 50 (see FIG. 4). ) 55 is recognized. The wobbling warning processing unit 26 determines whether or not the large vehicle 5 (own vehicle) has deviated from the white lines 51 and 53, that is, whether or not the lane (lane) 55 defined by the white lines 51 and 53 has deviated. When deviating, the number of white line deviations stored in the RAM 15 is counted up.

  The continuous travel warning processing unit 27 calculates the continuous travel time obtained by integrating the continuous travel time counted by the timer 16 and the speed pulse input via the speed I / F 19, and obtains this information. Store in the RAM 15. Further, when the continuous running time exceeds 4 hours (set time), which is the continuous running time of the large-sized vehicle 5 stipulated by law, the continuous running warning processing unit 27 is the first time point that exceeds the set time. Thereafter, a continuous travel time alarm is generated using the buzzer 13. Further, the continuous running warning processing unit 27, after a predetermined time (30 minutes before here) from the first time point, that is, after 3 hours 30 minutes, after the second time point exceeding 3 hours 30 minutes, Generate continuous running time warning. The continuous running time warning and the continuous running time notice warning have different alarm sounds, and the warning sound of the continuous running time alarm is recognized by the driver as having a higher alarm severity.

  When the ignition switch (IGN) is turned on, the power supply unit 22 is connected to the battery (BATT) and supplies power to the drive recorder 10.

  FIG. 2 is a diagram showing the contents of the table 45 in which the number of wobbling determinations corresponding to the continuous running time is registered. In the table 45, the number of wobbling determinations (set value) corresponding to the continuous running time is registered. Here, as described above, assuming that the legal continuous running time of the large vehicle 5 is 4 hours, when the continuous running time reaches the second time point, that is, when 3 hours 30 minutes are reached, the continuous running time warning warning is issued. It is assumed that the continuous travel time alarm is issued when the continuous travel time reaches the first time point, that is, when it reaches 4 hours.

  Specifically, the number of times of wobbling determination is set to 3 before the continuous travel time warning (that is, the period before the second time point). Further, when the continuous running time warning is in progress (that is, the period after the second time point and before the first time point), the number of times of wobbling determination is set to two. Furthermore, when the continuous running time alarm is being performed (that is, after the first time point), the number of times of wobbling determination is set to one. As described above, the table 45 is divided into three continuous travel time states according to the continuous travel time, that is, before the continuous travel time warning, during the continuous travel time warning, and during the continuous travel time warning. The number of wobble determinations is set for each.

  Here, the number of times of determination of wobbling is set to be different for each of the three continuous travel time states. However, the continuous travel time state can be divided into arbitrary steps by setting the continuous travel time period more finely. In addition, the number of times set for each continuous travel time state is appropriately set according to the continuous travel time. At this time, it is preferable that the set number of times becomes smaller as the continuous running time becomes longer regardless of the presence or absence of the continuous running time warning. Further, the number of white line departures and the number of wobble determinations are set to values per predetermined time (for example, unit time).

  The operation of the drive recorder 10 having the above configuration will be described. FIG. 3 is a flowchart showing the procedure of the wobbling detection operation according to the embodiment of the present invention. This operation program is stored in the ROM 14 and executed by the CPU 11.

  The CPU 11 waits until the start of the recording operation is instructed by turning on the ignition switch or the like (step S1). It is assumed that the CPU 11 is operating in the power saving mode even when the ignition switch is off. When the recording operation is started, an image captured by the camera 31 is input via the camera I / F 21 and a calculation process for recognizing the lane (lane) 55 by the lane recognition calculation unit 25 is performed (step S2). That is, the lane recognition calculation unit 25 performs image processing on the photographed image and recognizes the lane 55 inside the two white lines 51 and 53 laid on the road 50 (see FIG. 4). .

  CPU11 specifies the position of the own vehicle with respect to the two white lines 51 and 53 which divide the lane 55 recognized by step S2 by the wandering warning process part 26 (step S3).

  CPU11 determines whether the own vehicle deviated from the white line based on the position of the own vehicle with respect to the white lines 51 and 53 (step S4). If the host vehicle does not deviate from the white line, the CPU 11 returns to the process of step S2.

  On the other hand, when the host vehicle has deviated from the white line, the CPU 11 counts up the number of white line departures stored in the RAM 15 by 1 (step S5). Note that the initial value of the number of white line departures is 0.

  Further, the CPU 11 refers to the continuous travel time stored in the RAM 15 and specifies the continuous travel time state corresponding to the current continuous travel time from the table 45 stored in the ROM 14 (step S6). As the continuous running time state, as described above, three are used before the continuous running time warning, during the continuous running time warning, and during the continuous running time warning.

  The CPU 11 refers to the table 45 of FIG. 2 and sets the number of wobbling determinations corresponding to the continuous running time state (step S7). Further, the CPU 11 compares the number of times of the wander determination with the number of times of deviation from the white line, and determines whether or not the number of times of deviation from the white line has reached the number of times of wander determination, that is, whether or not the number of times of wander determination is greater than or equal to the number of times of wander determination. Step S8).

  When the number of wobble determinations has not been reached, the CPU 11 returns to the process of step S2. On the other hand, when the number of times of wobbling determination has been reached, the CPU 11 performs a wobbling operation alarm operation (step S9). In this wobbling operation warning operation, the buzzer 13 described above is sounded. Thereafter, the CPU 11 proceeds to the process of step S2.

  FIG. 4 is a diagram illustrating the occurrence of the wobbling detection and the wobbling operation alarm. The case where the large vehicle 5 is traveling in the direction of arrow a on the lane 55 inside the two white lines 51 and 53 laid on the road 50 is shown. In FIG. 4, the continuous running time state is before the continuous running time notice warning. During traveling, the large vehicle 5 deviates from the white line 51 on the right side in the traveling direction at time t1. Thus, the number of white line departures is updated to 1 (counting up).

  Subsequently, at time t2, the large vehicle 5 deviates from the white line 53 on the left side in the traveling direction. As a result, the white line departure count is updated to 2.

  Further, at the time t3, the large vehicle 5 departs from the white line 53 on the left side in the traveling direction again. As a result, the white line departure count is updated to 3. Since the number of departures from the white line has reached the value 3, which is the number of wobbling determinations, the wobbling operation alarm 60 is generated at this time t3.

  In FIG. 4, generation | occurrence | production of the wobbling driving | running | working warning in case the continuous running time state is before the continuous running time notice warning was demonstrated. The same applies to the case where the continuous running time state is during the continuous running time warning or the continuous running time warning, except that the number of times of determination of wobbling differs. That is, when the continuous running time state is in the continuous running time warning, the white line departure count is updated to 2 at time t2, and the white line departure count reaches the value 2, which is the number of wobble determinations, at this time t2. A wobbling operation alarm 60 is generated. Similarly, when the continuous running time state is in the continuous running time alarm, the white line departure frequency is updated to 1 at time t1, and the white line departure frequency reaches the value 1 which is the number of wobble determinations, and this time t1 A wobbling operation alarm 60 is generated.

  According to the drive recorder 10 of the present embodiment, the number of times of wobbling determination is set according to the continuous running time, so that wobbling operation can be warned at an appropriate timing. In this way, since the set value corresponding to the driving situation is determined, it is possible to detect the wobbling driving that matches the driving situation.

  Further, in the case of long-time operation, it is possible to quickly detect the wobbling operation by setting the number of times of wobbling determination to a small value.

  In addition, because the number of times of stagger determination is set to a different value before the continuous travel time warning, during the continuous travel time warning, and during the continuous travel time warning, it is possible to detect staggered driving that more closely matches the driving situation. .

  In addition, since the number of white line departures and the number of times of wobbling are determined per predetermined time when determining the staggering operation, the predetermined time is set to a short time even when the user suddenly becomes sleepy due to long-time driving. Thus, responsiveness can be improved.

  The present invention is not limited to the configuration of the above-described embodiment, and any configuration that can achieve the function of the configuration of the present embodiment is applicable.

  For example, in the above embodiment, after performing the wobbling operation warning operation in step S9, the CPU 11 resets the number of white line departures stored in the RAM 15 to a value of 0, and then returns to the process of step S2. Good. This is effective when the driver wakes up after the wandering driving alarm operation is performed and the driving is resumed.

  In the wobbling operation warning process, the warning lamp may be lit or the seat belt may be vibrated instead of the buzzer sounding or the buzzer sounding.

  In the above embodiment, the number of white line departures and the number of wobble determinations are set to the number per predetermined time, but may be set to the total number during driving.

  In the above embodiment, the deviation of the white line is determined by performing image processing on the image captured by the camera using image recognition technology. However, the present invention is not limited to this. For example, the current position of the vehicle based on high-accuracy GPS information or the like. Can be detected accurately, the deviation of the white line may be detected from the current position of the vehicle and the position of the white line on the map.

  The present invention is useful because it can detect the wobbling operation that matches the driving situation when detecting the wobbling operation.

Here, the features of the above-described embodiments of the vehicle-mounted device according to the present invention are summarized and listed in the following [1] to [4], respectively.
[1] A drive recorder (10) that is mounted on a vehicle (5) and detects a wobbling operation,
When the number of times that the vehicle (5) has deviated from the lane (55) is equal to or more than a set value determined according to the time for driving the vehicle (5), it is determined that the driving is staggered.
The drive recorder (10) characterized by the above-mentioned.
[2] The set value is set to a smaller value as the time for driving the vehicle (5) becomes longer.
The drive recorder (10) according to [1], characterized in that:
[3] After the first time when the continuous running time of the vehicle (5) has passed a predetermined set time, a continuous running time alarm is issued, and a second time before a predetermined time from the first time After that, equipped with a warning unit to issue a warning of continuous travel time,
The set value is set to a different value in a period before the second time point, a period after the second time point and before the first time point, and a period after the first time point,
The drive recorder (10) according to [2], wherein
[4] The number of times that the vehicle has deviated from the lane (55) and the set value are values per predetermined time.
The drive recorder (10) according to [2] or [3].

5 Large vehicles (vehicles)
10 Drive recorder 11 CPU
12 G sensor 13 Buzzer (BZ)
14 ROM
15 RAM
16 Timer 18 Card I / F
19 Speed I / F
20 Engine I / F
21 Camera I / F
22 Power supply section 25 Lane recognition calculation section 26 Stagger warning processing section 27 Continuous running warning processing section 31 Camera 32 Memory card 50 Road 51, 53 White line 55 Lane (lane)
60 Fluctuation warning

Claims (4)

An in-vehicle device that is mounted on a vehicle and detects a wobbling operation,
When the number of times that the vehicle has deviated from the lane is greater than or equal to a set value determined according to the time for driving the vehicle, it is determined that the driving is staggered.
In-vehicle device characterized by that. The set value is set to a smaller value as the time for driving the vehicle becomes longer,
The on-vehicle device according to claim 1. After the first time point when the vehicle's continuous running time has passed a predetermined set time, a continuous running time alarm is issued and a continuous running time notice is issued after a second time point a predetermined time before the first time point. It has an alarm part that emits an alarm,
The set value is set to a different value in a period before the second time point, a period after the second time point and before the first time point, and a period after the first time point,
The vehicle-mounted device according to claim 2. The number of times that the vehicle has deviated from the lane and the set value are values per predetermined time.
The on-vehicle device according to claim 2 or 3, wherein

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