JP2006242031A - Method for preventing over speed of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for preventing over speed of a vehicle accurately determining degree of over speed and preventing excessive over speed. <P>SOLUTION: Difference between vehicle speed v and limiting speed on a traveling road acquired at same timing as vehicle speed v is calculated every unit time. (a) indicates an example of relations between vehicle speed and limiting speed on the axis of ordinate and time on the axis of abscissa. When the difference at unit time t1 is defined as v1 = vehicle speed - limiting speed, and S1 is defined as v1×t1, S1 becomes an area of a part indicated by (b) and has distance dimension. Calculation of product S1 of multiplication of excessive quantity of vehicle speed and unit time t1 is repeated. When integration value ΣS of the products S1, S2, ... Sn exceeds a predetermined judgment criteria, over speed is judged and predetermined over speed prevention countermeasure is executed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle overspeed prevention method for determining an overspeed so that a vehicle such as an automobile does not travel exceeding a speed limit.

  Conventionally, a speed limit that is an upper limit is set on a road on which a vehicle such as an automobile travels, and the vehicle is legally required to travel below the speed limit. However, in various cases, it is allowed to some extent that the traveling speed of the vehicle exceeds the speed limit. However, such an overspeed condition is only allowed for a short time. When the vehicle speed exceeds a predetermined speed, an alarm is generated, and when the speed exceeds for a certain period of time, it is recorded and used as data for managing and starting the safe driving of the driver. A vehicle operation data recording device is also disclosed (for example, refer to Patent Document 1). In this prior art, an overspeed for determining an overspeed is selected for a highway or a general road.

JP-A-6-174498

  It is desired that the vehicle travels as fast as possible. For this reason, the vehicle often travels at a substantially limited speed. However, the speed limit varies depending on the type of vehicle or road, and may vary depending on conditions such as weather and time zone. Therefore, in order to comply with the speed limit, the driver must constantly monitor traffic signs and the like. In addition, in order to smoothly travel a vehicle on a road on which many vehicles travel, it is necessary to travel according to the traveling speed of another vehicle as a traffic flow. As a result, the traveling speed of the traffic flow may exceed the speed limit. However, even if the traffic flow exceeds the speed limit, the degree will not be large.

  In the prior art disclosed in Patent Document 1, an alarm is generated even in an overspeed state that is allowed, and if the traveling speed is not reduced in response to the alarm, the overspeed is recorded. Even if the speed is excessively high, which causes a safety problem, the vehicle decelerates in response to the alarm, and as a result, it will not be recorded for a short time. Furthermore, the determination of the overspeed is only performed by switching between the expressway and the general road, and for example, it is not possible to make a determination corresponding to the difference in the speed limit within each road type.

  An object of the present invention is to provide a vehicle overspeed prevention method capable of accurately determining the degree of overspeed and preventing an excessive overspeed.

The present invention acquires information about the vehicle speed when the vehicle is running,
Get information about the speed limit at the driving location,
If the vehicle speed exceeds the speed limit, repeat the calculation of the product of the excess vehicle speed and the unit time,
When the integrated value of the products exceeds a predetermined determination reference value, it is determined that the vehicle is overspeed, and a predetermined overspeed prevention measure is executed.

  According to the present invention, the vehicle overspeed prevention method repeatedly calculates the product of the vehicle speed excess and the unit time, and determines that the vehicle is overspeed when the integrated value of the product exceeds a predetermined criterion value. Then, a predetermined countermeasure for preventing overspeed is executed. The vehicle speed is based on information acquired when the vehicle is traveling. The speed limit is acquired based on the travel location of the vehicle. Therefore, it is possible to acquire information about an appropriate speed limit according to the travel location of the vehicle and appropriately calculate the excess of the vehicle speed. If the driver of the vehicle repeats a vicious and excessive speed excess, the product of the excess and the unit time increases, and the integrated value increases rapidly. Judgment of overspeed is based on the integrated value obtained by repeatedly calculating the product of the excess of the vehicle speed and the unit time, so it is possible to accurately determine the degree of overspeed and ensure a malicious and excessive overspeed. Can be prevented.

In the present invention, the vehicle is equipped with a communication means capable of communicating with a base station,
When it is determined that the speed is exceeded, the violation information is communicated from the communication means to the base station.

  According to the present invention, when the operation of the vehicle is managed by the base station, the violation information is communicated to the base station from the communication means mounted on the vehicle when it is determined that the speed is exceeded. Since it is violation information based on the determination of an appropriate overspeed, it can be used effectively for management such as prompting the driver to restrain himself / herself for safe driving of the vehicle.

In the present invention, a vehicle speed limiter for limiting the vehicle speed is mounted on the vehicle,
The vehicle speed limiter is operated when it is determined that the speed is exceeded.

  According to the present invention, the vehicle speed limiter limits the vehicle speed in accordance with the appropriate determination of overspeed. Therefore, after the determination, the overspeed can be reliably prevented, and the driver is restrained by limiting the vehicle speed. It can also be urged.

  In the present invention, when it is determined that the speed is exceeded, if the engine is stopped in that state, the engine is not restarted.

  According to the present invention, according to the determination of excessive speed, which is appropriately performed, the engine is not restarted after being stopped. Therefore, the driver who causes the excessive speed is prohibited from traveling the vehicle, and the driver is restrained. Can be urged.

  In the present invention, when the integrated value approaches a predetermined range from the determination reference value, a warning is given to the driver of the vehicle.

  According to the present invention, before the integrated value exceeds the determination reference value, a warning is given to the driver of the vehicle, notifying that the integrated value is approaching the determination reference value, and encouraging the driver's self-control. it can.

  In the present invention, if the integrated value is equal to or less than a predetermined allowable reference value within a predetermined period, the integrated value is cleared and then the calculation of the product is repeated.

  According to the present invention, if the integrated value is less than or equal to a predetermined allowable reference value within a predetermined period, it is considered that there is no malicious speed excess, and the integrated value is cleared. Even if it continues, it can prevent reaching the execution of the overspeed prevention measure.

  Further, the present invention is characterized in that the integrated value is evaluated based on a total travel distance of the vehicle, and if the integrated value is evaluated to be greater than a predetermined value, it is determined that the vehicle has been driven violently.

  According to the present invention, the integrated value for excess speed is evaluated based on the total travel distance of the vehicle. The integrated value increases as the degree of overspeed is large and the state continues for a long time. If the integrated value is evaluated to be larger than the predetermined value, it means that the frequency of overspeed is high, so that it can be determined that the vehicle has been driven violently.

  Further, the present invention is characterized in that it is determined that an excellent operation has been performed if the integrated value does not exceed a predetermined evaluation reference value within a predetermined period.

  According to the present invention, the integrated value for overspeed is difficult to increase if the frequency of overspeed is small. If the integrated value does not exceed the predetermined evaluation reference value within a predetermined period, it means that the integrated value will not increase so much, and it is evaluated that the vehicle is operated with a low frequency of overspeed. Can do. Therefore, if the integrated value does not exceed the evaluation reference value within a predetermined period, it can be determined that the driver has performed excellent driving.

In the present invention, the determination of excess speed is performed by a processing device including a nonvolatile memory,
The speed excess information is stored in the nonvolatile memory when it is determined that the speed is exceeded.

  According to the present invention, the determination of overspeed is performed by a processing device including a non-volatile memory. When the overspeed is determined, the non-volatile memory such as a read-only memory (EEPROM) capable of electrically erasing / writing overspeed information is stored. Since it is stored in the memory, the overspeed information can be stored in the nonvolatile memory and can be referred to at any time.

  Further, the present invention is characterized in that the determination of overspeed is performed by adding an adjustment value that can be arbitrarily adjusted to the speed limit.

  According to the present invention, the determination of overspeed is performed by adding an adjustment value to the speed limit, and the adjustment value can be arbitrarily adjusted. The determination can be made according to the above.

  Further, the present invention is characterized in that the vehicle speed acquired as information on the vehicle speed is corrected in consideration of an error.

  According to the present invention, the vehicle speed acquired as information on the vehicle speed is corrected in anticipation of an error, so that the influence of the error included in the detection of the vehicle speed by a vehicle speed sensor or the like can be reduced and erroneous detection of overspeed can be avoided. it can.

  In the present invention, the excess of the vehicle speed is calculated at a predetermined fixed speed instead of the speed limit.

  According to the present invention, it is possible to set a fixed speed separately from the speed limit that changes according to the road and use it as an evaluation criterion for overspeed.

  In the present invention, instead of the product, a calculated value obtained by multiplying the difference between the speed and the speed limit by a power and then multiplying by a unit time is used.

  According to the present invention, since the difference between the speed and the speed limit is raised to the power and then integrated with the unit time, the contribution of the degree of excess of speed can be made larger than simply adding the difference with the unit time. For example, when the degree of excess of the vehicle speed with respect to the speed limit is large, the integrated value increases in a larger manner, but in the opposite case, it becomes smaller. Therefore, the degree of maliciousness can be reflected in the determination of overspeed.

  In the present invention, even when the vehicle speed is equal to or less than the speed limit, the difference between the vehicle speed and the speed limit is multiplied by the unit time, and the product is included in the integrated value calculation target.

  According to the present invention, when the vehicle speed is equal to or lower than the speed limit, the difference between the vehicle speed and the speed limit becomes a negative value, and when this difference is multiplied by the unit time and added to the integrated value, the integrated value is decreased. In order to reduce the integrated value, the driver can be guided to travel below the speed limit.

  Further, in the present invention, when the vehicle speed is equal to or less than the speed limit, if the vehicle speed is equal to or less than a predetermined stop reference value, it is determined that there is a traffic jam / stop state, and the product is not included in the calculation target. And

  According to the present invention, the vehicle speed does not exceed the speed limit in a traffic jam or in a stopped state because the vehicle speed is less than the speed limit regardless of the driver's intention. If the integrated value is calculated even in such a state, the integrated value is decreased, which is inappropriate for evaluation of the driving state. Since the period during which the vehicle speed is less than or equal to the speed limit in a traffic jam or stopped state is not included in the period for calculating the integrated value, it is possible to accurately determine whether the speed has been exceeded.

  Further, in the present invention, when the vehicle speed is equal to or less than the speed limit and the difference between the vehicle speed and the speed limit is equal to or less than a predetermined exclusion reference value, it is determined that the traffic is jammed / stopped, and the difference is calculated based on the unit time. It excludes from the object which calculates the said integrated value by multiplying.

  According to the present invention, when the vehicle speed is equal to or lower than the speed limit, the criterion for determining the traffic jam / stop state is based on the difference between the vehicle speed and the speed limit, not the vehicle speed. be able to. For example, if the exclusion reference value is 30 km / h, a highway with a speed limit of 100 km / h is judged to be congested or stopped at a vehicle speed of 70 km / h or less, and a normal road with a speed limit of 40 km / h is determined to have a vehicle speed of 10 km / h. It can be determined that the traffic is jammed or stopped at h or less.

  In the present invention, if the vehicle speed is equal to or less than the speed limit and the ratio of the speed limit to the absolute value of the difference between the vehicle speed and the speed limit is equal to or greater than a predetermined exclusion ratio value, it is determined that there is a traffic jam / stop state. The difference is excluded from the target for calculating the integrated value by multiplying the unit time.

  According to the present invention, for example, if the vehicle speed is 30 km / h, the speed limit is 80 km / h, and the exclusion ratio value is 1/2, the absolute value of the difference between the vehicle speed and the speed limit is 50 km / h. Since the ratio between the absolute value of the difference and the speed limit is 50/80> 1/2, the ratio is larger than the exclusion ratio value 1/2, and it can be determined that the traffic is jammed or stopped. Judgment of traffic congestion / stop state while driving on roads with low speed limit can be made more accurately, and the difference between vehicle speed and speed limit calculated in traffic jam / stop state should not affect the integrated value. it can.

  In the present invention, when it is determined that the difference between the vehicle speed and the speed limit is larger or smaller than a predetermined reference value, an abnormality is detected.

  According to the present invention, when the difference from the speed limit becomes very large and reaches, for example, 200 km / h, or very small and, for example, reaches -200 km / h, There is a greater possibility that there is a problem in obtaining the vehicle speed and speed limit. In such a case, an abnormality is detected according to the comparison with the reference value, and for example, a diagnosis request such as a malfunction of the vehicle speed sensor or a speed limit acquisition failure is issued, so that the vehicle speed sensor malfunctions or fails to acquire the speed limit. It can be confirmed whether or not.

  Further, the present invention is characterized in that the determination reference value or the predetermined period is changed according to a past speed excess state.

  According to the present invention, the determination reference value for determining that the speed is excessive or the predetermined period is changed according to the past excessive speed state. For example, if it is determined in the past that the speed has been exceeded, the determination reference value can be lowered, and the determination of the speed excess can be made strictly. Further, even if the determination reference value is the same, it is possible to lengthen the period for accumulating the product of the difference between the vehicle speed and the speed limit and the unit time, and to strictly determine whether the speed is exceeded.

  Further, the present invention is characterized in that the integrated value is attached to a driver of the vehicle, and even if the driver changes the vehicle, the integrated value is succeeded to the changed vehicle.

  According to the present invention, the integrated value that evaluates the driver's overspeed is attached to the driver, and even if the driver changes the vehicle, the integrated value is taken over by the changed vehicle. It can be carried out.

  According to the present invention, the information on the speed limit at the travel location of the vehicle is acquired, and the determination of overspeed is performed based on the integrated value obtained by repeatedly calculating the product of the excess of the vehicle speed and the unit time. Therefore, it is possible to accurately determine the degree of overspeed, and to reliably prevent malicious and excessive overspeed.

  Further, according to the present invention, when the operation of the vehicle is managed by the base station, the violation information based on the determination of an appropriate overspeed is communicated to the base station from the communication means mounted on the vehicle, and the vehicle It can be used effectively for management such as encouraging the driver to restrain himself / herself for safe driving.

  Further, according to the present invention, the vehicle speed limiter limits the vehicle speed by the vehicle speed limiter according to the determination of overspeed, so that the overspeed can be surely prevented after the determination, and the driver is encouraged to restrain himself / herself by limiting the vehicle speed. it can.

  Further, according to the present invention, in accordance with the determination of overspeed, the engine is not restarted after being stopped. Therefore, the driver who causes the overspeed is prohibited from traveling the vehicle, and the driver is encouraged to restrain himself / herself. it can.

  Further, according to the present invention, before the integrated value exceeds the determination reference value, a warning is given to notify that the integrated value is approaching the determination reference value, and the driver can be restrained.

  Further, according to the present invention, since the integrated value is cleared unless it is a malicious speed excess, it is possible to prevent the excessive speed prevention measures from being executed even if the allowable speed excess continues for a long period of time. it can.

  Further, according to the present invention, the integrated value for overspeed is evaluated based on the total mileage of the vehicle, and the large integrated value compared to the reference value means that the frequency of overspeed is high. It can be determined that the vehicle has been driven violently.

  Further, according to the present invention, if the integrated value for overspeed does not increase so much, it is evaluated that the driving of the vehicle is performed in a state where the frequency of overspeed is small, and the driver is performing excellent driving. Judgment can be made.

  Further, according to the present invention, when the speed is exceeded, the speed excess information is stored in the nonvolatile memory, so that the speed excess information stored in the nonvolatile memory can be referred to at any time.

  Further, according to the present invention, it is possible to determine whether the speed is exceeded by adding an adjustment value to the speed limit, and to match the range where it is determined that the speed is exceeded with the actual traffic conditions.

  Further, according to the present invention, the vehicle speed is corrected in anticipation of an error, so that the influence of the error included in the detection of the vehicle speed by the vehicle speed sensor or the like can be reduced, and erroneous detection of overspeed can be avoided.

  In addition, according to the present invention, a fixed speed can be set separately from the speed limit that changes according to the road, and can be used as a criterion for excess speed.

  Further, according to the present invention, the difference between the speed and the speed limit can be raised to the power and then integrated with the unit time to increase the contribution of the degree of excess of speed, and the degree of maliciousness is reflected in the determination of excess speed. be able to.

  Further, according to the present invention, when the vehicle speed is equal to or lower than the speed limit, when the difference between the vehicle speed and the speed limit is multiplied by the unit time and added to the integrated value, the integrated value is reduced. You can be guided to drive at.

  In addition, according to the present invention, the period in which the vehicle speed is less than or equal to the speed limit in a traffic jam or in a stopped state is not included in the period for calculating the integrated value, so that it is possible to accurately determine whether the speed has been exceeded.

  Further, according to the present invention, it is determined based on the difference between the vehicle speed and the speed limit, not the vehicle speed, that is, the traffic jam / stopped state, so that the determination according to the speed limit can be made.

  Further, according to the present invention, it is possible to determine a traffic jam / stop state based on the ratio between the absolute value of the difference between the vehicle speed and the speed limit and the speed limit. Judgment of traffic congestion / stop state while driving on roads with low speed limit can be made more accurately, and the difference between vehicle speed and speed limit calculated in traffic jam / stop state should not affect the integrated value. it can.

  Further, according to the present invention, when there is a high possibility that there is a problem in obtaining the vehicle speed or the speed limit, an abnormality is detected, so it is confirmed by a diagnosis request or the like whether malfunction or information acquisition has failed. be able to.

  Further, according to the present invention, it is possible to change the determination reference value for determining that the speed is exceeded or a predetermined period according to the past speed excess state.

  Further, according to the present invention, an integrated value that evaluates the driver's overspeed is attached to the driver, and even if the driver changes the vehicle, the integrated value is succeeded to the changed vehicle and the evaluation is performed accurately. Can do.

  FIG. 1 shows a schematic configuration of an overspeed management system that realizes a vehicle overspeed prevention method according to an embodiment of the present invention. The overspeed management system includes a vehicle side system 1 and a base station side system 2. The vehicle-side system 1 is mounted on a vehicle such as an automobile that is a management target for excess speed. Vehicles to be managed are, for example, business vehicles for passengers such as taxis and buses, and for luggage transportation such as trucks and light vans. When business vehicles are to be managed, it is only necessary to monitor and prevent overspeed as part of business management.

The vehicle side system 1 includes a remote server 10. The remote server 10 is mounted on a vehicle and connected to an in-vehicle LAN (Local Area Network) 13 via an interface 12. The LAN 13 is connected to a plurality of electronic control units for performing various controls on the vehicle on which the remote server 10 is mounted. The LAN 13 is used as a communication path for performing data communication between vehicle-mounted electronic control units. One of the data important in vehicle control includes the vehicle speed, which is the traveling speed of the vehicle. The vehicle speed is detected by the vehicle speed sensor 14 and data representing the vehicle speed is sent to the LAN 13. The processing means 11 of the remote server 10 monitors the vehicle speed data in real time and determines whether the speed is exceeded. The determination of exceeding the speed is made based on the speed limit prescribed for the road that is running. The speed limit of the road being traveled is detected by the position detection unit 15 based on the current position of the vehicle, and is acquired by the speed limit acquisition unit 16 based on the detection result. The speed limit acquisition means 16 acquires information on speed limits in a plurality of sections for each road with reference to, for example, a database that is built in advance. In the overspeed prevention, the overspeed tendency is digitized and monitored over a period of time, and numerical values reflecting the overspeed tendency are accumulated, and when the integrated value exceeds a certain value, the communication means 17 This is performed based on transmitting violation information from the antenna 18 to the base station side system 2 via. Also, the accumulated value and violation information can be obtained from EEPROM (Electrically Erasable
It is also stored in the non-volatile memory 19 including Programmable Read Only Memory).

  Note that the processing unit 11, the position detection unit 15, the speed limit acquisition unit 16, and the communication unit 17 of the remote server 10 are realized including at least a part of a computer that performs a program operation. The position detection means 15 can detect the current position of the vehicle by using GPS (Global Positioning System), dead reckoning navigation or map matching, or using them together.

  The base station side system 2 includes a management means 20, a communication means 21, an antenna 22, and a management database 23. The management unit 20 transmits measures for preventing overspeed to the vehicle-side system 1 via the communication unit 21 and the antenna 22. Moreover, if the violation information transmitted from the vehicle side system 1 is received, it will register in the management database 23 and will record about the driver of a vehicle.

  FIG. 2 shows the basic concept of determining excess speed in the present invention. The present invention is based on this basic concept, and the specific method and configuration for realizing this need not necessarily include all of the description, and should be able to be realized in any combination. .

  In the basic concept, the difference between the vehicle speed v detected by the vehicle speed sensor 14 while the vehicle is traveling and the speed limit on the traveling road acquired at the same timing is calculated for each unit time. FIG. 2A shows an example of the relationship between the vehicle speed and speed limit on the vertical axis and the time on the horizontal axis. For example, if the difference in unit time t1 is v1 = vehicle speed−restricted speed, and S1 = v1 × t1, S1 has an area of a portion as shown in FIG. 2B and has a dimension of distance. That is, when the vehicle travels, information on the vehicle speed is obtained, information on the speed limit is obtained from the position information at the travel location, and when the vehicle speed exceeds the speed limit, the excess of the vehicle speed is determined as the vehicle speed and the speed limit. When the integrated value ΣS of the products S1, S2,..., Sn exceeds a predetermined criterion value, the calculation of the product S1 of the excess vehicle speed and the unit time t1 is repeated. It is determined that the speed is exceeded, and a predetermined speed excess prevention measure is executed.

  In such a vehicle speed excess prevention method, calculation of the product S1 of the excess v1 where the vehicle speed exceeds the speed limit and the unit time t1 is repeated, and the integrated value ΣS of the products S1, S2,. If it exceeds a predetermined criterion value, it is determined that the speed has been exceeded, and a predetermined speed excess prevention measure is executed. The vehicle speed is based on information acquired when the vehicle is traveling. The speed limit is obtained based on position information at the travel location of the vehicle. Therefore, it is possible to acquire information on an appropriate speed limit according to the position of the vehicle and appropriately calculate the excess v1 of the vehicle speed. If the driver of the vehicle repeats a vicious and excessive speed excess, the product S1 of the excess v1 and the unit time t1 increases, and the integrated value ΣS also increases rapidly. The determination of the excess of speed is made based on the integrated value ΣS obtained by repeatedly calculating the product S1 of the vehicle speed excess v1 and the unit time t1. The excess can be surely prevented.

  FIG. 3 shows a schematic procedure for determining excess speed by the processing means 11 of the remote server 10 of FIG. In step s0, power is turned on and the remote server 10 starts operating. In step s1, the vehicle speed is acquired from the vehicle speed sensor 14, the speed limit is acquired from the speed limit acquisition means 16, and the vehicle speed is compared with the speed limit. If the difference between the vehicle speed and the speed limit is not greater than 0 + α, the comparison is continued. α is a correction value, and is used to prevent erroneous detection of overspeed, assuming an error of the vehicle speed sensor 14 and the like. That is, the vehicle speed acquired as information about the vehicle speed is corrected in anticipation of an error, so that the influence of the error included in the detection of the vehicle speed by the vehicle speed sensor 14 or the like can be reduced, and erroneous detection of overspeed can be avoided.

  If it is determined in step s1 that the vehicle speed−the speed limit> 0 + α, the process proceeds to step s2, and the product S1 is calculated by multiplying the difference between the vehicle speed and the speed limit by the unit time. That is, S1 = (vehicle speed−restricted speed) × unit time is calculated. In the next step s3, the calculated product S1 is added to the integrated value ΣS. That is, ΣS = ΣS + S1 is calculated. In step s4, it is determined whether or not the integrated value ΣS is larger than a certain value. When it is determined that it has not increased, the process returns to step s1. When it is determined in step s4 that ΣS> a constant value, the process proceeds to step s5, and measures for preventing overspeed such as transmission of violation information, vehicle speed limiter, and restart impossible are executed, and the procedure ends in step s6.

  In the violation information transmission in step s5, as described above, the communication means 17 capable of communicating with the base station is installed in the vehicle, and when it is determined that the speed is exceeded, the violation information is transmitted from the communication means 17. Communicate to the base station. When the operation of the vehicle is managed by the base station, the violation information is communicated to the base station from the communication means 17 mounted on the vehicle when it is determined that the speed is exceeded. Since it is violation information based on the determination of an appropriate overspeed, it can be used effectively for management such as prompting the driver to restrain himself / herself for safe driving of the vehicle.

  In step s5, when a vehicle speed limiter for limiting the vehicle speed is mounted on the vehicle, the vehicle speed limiter is activated when it is determined that the vehicle speed is excessive. Since the vehicle speed limiter limits the vehicle speed in accordance with the appropriate determination of overspeed, the overspeed can be reliably prevented after the determination, and the driver can be encouraged to restrain himself / herself by limiting the vehicle speed. For example, when the vehicle speed exceeds 90 km / h, the vehicle speed limiter cuts the fuel supply to the engine so that the vehicle cannot run at the speed or higher.

  In step s5, when it is determined that the speed is exceeded, if the engine is stopped in that state, the engine is not restarted. According to the determination of overspeed that is appropriately performed, the engine is not restarted after being stopped. Therefore, it is possible to inhibit the driver who causes the overspeed from traveling the vehicle and to encourage the driver to restrain himself / herself. In order to enable restarting, some release device, such as a dealer's tool, is required.

  FIG. 4 shows the concept of giving a warning before comparing the integrated value ΣS with a constant value in step s4 in the overspeed determination in the procedure as shown in FIG. Warning is performed by lighting the lamp. You can also display warning text on the display. You can also warn with a voice message. When the example of the relationship between the vehicle speed and the speed limit is shown in the graph while the vehicle is traveling, the portion indicated by hatching corresponds to the overspeed. At time τ1, the speed limit is switched and the difference instantaneously becomes 0, but the state of excessive speed continues thereafter. The overspeed state continues even when the speed limit is switched again, and continues until the vehicle speed falls below the speed limit at time τ2. Therefore, integrated value ΣS increases until time τ2. Since the vehicle speed exceeds the speed limit at time τ3, the integrated value ΣS does not change from time τ2 to time τ3, and increases again from time τ3. In this way, the overspeed integrated value ΣS always increases when there is an overspeed, and reaches the determination reference value corresponding to the constant value in step s4 in FIG. Before the integrated value ΣS reaches the determination reference value and the countermeasure for preventing excess speed as shown in step s5 of FIG. 3 is executed, the vehicle driver is warned within a certain warning range from the determination reference value. You can also do it. If the vehicle driver is warned before the accumulated value ΣS, which is the product of the difference between the vehicle speed and the speed limit and the unit time, exceeds the criterion value, the fact that the integrated value is approaching the criterion value will be notified. Drivers can be encouraged.

  Further, if the vehicle speed exceeds even the speed limit even a little, the integrated value ΣS increases, and if the vehicle speed becomes longer, the possibility of exceeding the determination reference value increases. Therefore, the period for determining the excess of speed is limited to a certain period of about 2 years, for example, and if the integrated value ΣS is less than or equal to a predetermined allowable reference value within this predetermined period, It is preferable to repeat the calculation. If the integrated value is less than or equal to the pre-determined allowable reference value within the predetermined period, it is considered that there is no malicious overspeed, and the integrated value is cleared. Preventing the implementation of preventive measures.

  Further, the integrated value ΣS can also be used for evaluating the driving state of the driver. For example, the base station side system 2 uses the management database 23 to evaluate the integrated value based on the total mileage of the vehicle, and if it is evaluated that the integrated value is large, it is determined that the vehicle has been driven violently. You can also. The integrated value for the excess of speed increases as the degree of excess of speed increases and the state continues for a long time. This is because if the integrated value is evaluated to be large compared to the total travel distance, it means that the frequency of overspeed is high, so that it can be determined that the vehicle has been driven violently.

  Further, if the integrated value does not exceed the predetermined evaluation reference value within a predetermined period, it can be determined that the excellent operation has been performed. The integrated value for overspeed is difficult to increase if the frequency of overspeed is small. If the integrated value does not exceed the predetermined evaluation reference value within a predetermined period, it means that the integrated value will not increase so much, and it is evaluated that the vehicle is operated with a low frequency of overspeed. Can do. Therefore, if the integrated value does not exceed the evaluation reference value within a predetermined period, it can be determined that the driver has performed excellent driving.

  Further, the determination of the excess of speed in step s1 in FIG. 3 can be performed by adding an adjustment value that can be arbitrarily adjusted to the speed limit. The speed excess is determined by adding an adjustment value to the speed limit, and the adjustment value can be adjusted arbitrarily. Therefore, the range for determining the speed excess is adjusted with the adjustment value, and the determination is made according to the traffic situation. Can be.

  In addition, the determination of excess speed in step s1 and the calculation of excess vehicle speed in step s2 can be performed at a predetermined fixed speed, for example, 120 km / h, instead of the speed limit. A fixed speed can be set separately from the speed limit that changes according to the road, and can be used as an evaluation criterion for excess speed.

  In step s2, a calculated value obtained by multiplying the difference between the speed and the speed limit by a power and then multiplying by the unit time can be used instead of the product. For example, S1 is calculated as the product of the square of (v1) and the unit time t1. In general, V1 is raised to the power of n and the difference between the speed and the speed limit is raised to the power and then integrated with the unit time, so that the contribution of the degree of excess of speed can be made larger than simply adding the difference with the unit time. it can. For example, when the degree of excess of the vehicle speed with respect to the speed limit is large, the integrated value increases in a larger manner, but in the opposite case, it becomes smaller. Therefore, the degree of maliciousness can be reflected in the determination of overspeed.

  Further, in the vehicle-side system 1 of FIG. 1, the excess speed is determined by the remote server 10 as a processing device including the nonvolatile memory 19, and when determining that the speed is exceeded, violation information is stored in the nonvolatile memory 19. Yes. The determination of overspeed is performed by a processing device including the non-volatile memory 19, and when the overspeed is determined, the violation information is stored in the non-volatile memory 19 such as an electrically erasable / writable read-only memory (EEPROM). The violation information is stored in the nonvolatile memory 19 and can be referred to at any time.

  FIG. 5 shows another embodiment of the present invention in which the unit time is added to the difference between the vehicle speed and the speed limit and the integrated value is included in the calculation target of the integrated value even when the vehicle speed is equal to or lower than the speed limit. Show. That is, even if the vehicle speed and the speed limit are in the same relationship as in FIG. 4, the processing for the section in which the vehicle speed is lower than the speed limit is varied between time τ2 and time τ3. As shown in FIG. 4, the section indicated by the slanting line with the lower left is an excessive speed section, the difference between the vehicle speed and the speed limit is a positive value, and the integrated value ΣS for accumulating the product multiplied by the unit time is To increase. However, in the section from time τ2 to time τ3, the vehicle speed is lower than the speed limit and the difference between the vehicle speed and the speed limit is negative, as indicated by the downward slanting diagonal line. The product of and becomes negative, and when added to the integrated value ΣS, the integrated value ΣS is decreased. Therefore, after time τ2, the integrated value ΣS becomes a value that is smaller than the integrated value ΣS of FIG. 4 indicated by the phantom line, and the integrated value ΣS can be decreased by the value indicated by the vertical line. That is, when the vehicle speed is less than or equal to the speed limit, the difference between the vehicle speed and the speed limit is a negative value.If this difference is multiplied by the unit time and added to the integrated value, the integrated value is decreased. In order to reduce the integrated value, it is possible to guide the vehicle to travel below the speed limit.

  FIG. 6 shows the idea that if the vehicle speed is equal to or less than the limit speed and the vehicle speed is equal to or less than a predetermined stop reference value, it is determined that the traffic is jammed or stopped, and the integrated value ΣS is not included in the calculation target. That is, an exclusion criterion is set as a constant stop criterion value, the vehicle speed exceeds the speed limit until time τ11, the vehicle speed is less than the speed limit from time τ11 to time τ11a, and is excluded from time τ11a to time τ11b. From the time τ11a to the time τ11b when the vehicle speed is equal to or less than the exclusion criterion, the excess is added at the portion indicated by the left-slanted diagonal line and the integrated value ΣS is decreased at the portion indicated by the right-slashed diagonal line. This section is excluded. This section is considered to be a traffic jam or a stopped state. In the traffic jam or the stopped state, the vehicle speed is not more than the speed limit regardless of the driver's intention, so it is natural that the vehicle speed does not exceed the speed limit. If the integrated value ΣS is calculated even in such a state, the integrated value ΣS decreases, which is inappropriate for the evaluation of the driving state. Since the period during which the vehicle speed is less than or equal to the speed limit in a traffic jam or stopped state is not included in the period for calculating the integrated value ΣS, it is possible to accurately determine whether the speed has been exceeded.

  FIG. 7 shows that when the vehicle speed is less than or equal to the speed limit and the difference between the vehicle speed and the speed limit is equal to or less than a predetermined exclusion standard value, it is determined that the traffic is jammed or stopped, and the difference is calculated by multiplying the unit time. The concept of excluding from the subject to be shown. In the case where the vehicle speed and the speed limit are the same as in FIG. 6, the exclusion criterion is not constant as shown in FIG. 6, but is linked to the change in the speed limit as a constant difference from the speed limit. Therefore, in FIG. 6, time τ12 to time τ13 is a section where the vehicle speed is lower than the speed limit, and the integrated value ΣS is decreased. In FIG. It becomes lower than the exclusion criterion, and is excluded from the interval in which the integrated value ΣS is decreased. When the vehicle speed is equal to or lower than the speed limit, the criterion for determining whether the vehicle is jammed or stopped is based on the difference between the vehicle speed and the speed limit, not the vehicle speed, so that a determination according to the speed limit can be made. For example, if the exclusion reference value is 30 km / h, a highway with a speed limit of 100 km / h is judged to be congested or stopped at a vehicle speed of 70 km / h or less, and a normal road with a speed limit of 40 km / h is determined to have a vehicle speed of 10 km / h. It can be determined that the traffic is jammed or stopped at h or less.

  If the vehicle speed is below the speed limit and the ratio of the speed limit to the absolute value of the difference between the vehicle speed and the speed limit is equal to or greater than the preset exclusion ratio value, it is determined that the traffic is jammed or stopped. It can also be excluded from the target of calculating the calculated value by integration. For example, if the vehicle speed is 30 km / h, the speed limit is 80 km / h, and the exclusion ratio value is 1/2, the absolute value of the difference between the vehicle speed and the speed limit is 50 km / h. Since the ratio between the absolute value of the difference and the speed limit is 50/80> 1/2, the ratio is larger than the exclusion ratio value 1/2, and it can be determined that the traffic is jammed or stopped. Judgment of traffic congestion / stop state while driving on roads with low speed limit can be made more accurately, and the difference between vehicle speed and speed limit calculated in traffic jam / stop state should not affect the integrated value. it can.

  Further, in each embodiment, when it is determined that the difference between the vehicle speed and the speed limit is very large or small according to a predetermined standard, an abnormality can be detected and a diagnosis request can be issued. When the difference from the speed limit becomes very large and reaches, for example, 200 km / h, or when it becomes very small and reaches, for example, -200 km / h, it is impossible in practice. There is a greater possibility that there will be a problem with the acquisition. In such a case, an abnormality is detected and, for example, a diagnosis request such as a malfunction of the vehicle speed sensor 14 or a speed limit acquisition failure is issued, so whether or not the vehicle speed sensor 14 malfunctions or fails to acquire the speed limit speed. Can be confirmed.

  Also, the determination reference values shown in FIGS. 4 and 5 can be changed according to the past speed excess state. That is, the determination reference value for determining that the speed is excessive is changed according to the past excessive speed state. For example, if it is determined in the past that the speed has been exceeded, the determination reference value can be lowered, and the determination of the speed excess can be made strictly.

  In addition, the predetermined period for determining the overspeed by comparing the integrated value ΣS with the determination reference value can be changed according to the past overspeed state. Since the predetermined period for determining that the vehicle is overspeed is changed according to the past overspeed condition, for example, if the overspeed is determined in the past, the determination reference value is the same, but the vehicle speed and the speed limit are the same. It is possible to lengthen the period for accumulating the product of the difference and the unit time, and to strictly determine whether the speed is exceeded.

  Further, even if the integrated value ΣS is attached to the driver of the vehicle and the driver changes the vehicle, the integrated value ΣS can be taken over by the changed vehicle. The integrated value ΣS that evaluates the driver's overspeed is attached to the driver, and even if the driver changes the vehicle, the integrated value ΣS is taken over by the changed vehicle, so that the driver can be evaluated accurately. .

  In the above description, a remote server is mounted on a commercial vehicle to prevent overspeed. However, a vehicle generally equipped with a device having a similar function, an already installed navigation device or ETC ( Even if a function is added to the Electronic Toll Collection system), the present invention can be implemented. If discounting of tolls on toll roads and reduction of insurance premiums are performed based on the evaluation of overspeed, prevention of overspeed can be a great benefit for the driver.

  Even if the vehicle-side system 1 does not include the communication means 17 for communicating the violation information to the base station-side system 2, the vehicle-side system 1 can be used as an overspeed determination material by referring to information recorded in the nonvolatile memory 19 or the like it can. Further, vehicle speed data can always be transmitted from the vehicle-side system 1 to the base station-side system 2, and determination of excess speed can be made by the base station-side system 2.

1 is a block diagram illustrating a schematic configuration of an overspeed management system that implements a vehicle overspeed prevention method according to an embodiment of the present invention. It is a graph which shows the basic idea which determines excess speed in this invention. It is a flowchart which shows the rough speed excess determination procedure by the process means 11 of the remote server 10 of FIG. It is a graph which shows the idea of giving a warning before comparing the integrated value ΣS with a constant value in step s4 in the speed excess determination in the procedure as shown in FIG. FIG. 6 is a graph showing a concept of adding a unit time to a difference between a vehicle speed and a speed limit and including the integrated value as a calculation target of the integrated value even when the vehicle speed is equal to or lower than the speed limit as another embodiment of the present invention. . In the embodiment of FIG. 5, the vehicle speed is equal to or less than the speed limit, and if the vehicle speed is equal to or less than a predetermined stop reference value, it is determined that there is a traffic jam / stop state, and the integrated value ΣS is not included in the calculation target. It is a graph. In the embodiment of FIG. 5, when the vehicle speed is equal to or lower than the speed limit, and the difference between the vehicle speed and the speed limit is equal to or less than a predetermined exclusion reference value, it is determined that the traffic is jammed / stopped, and the difference is integrated unit time. It is a graph which shows the view which excludes from the object which calculates a product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle side system 2 Base station side system 10 Remote server 11 Processing means 14 Vehicle speed sensor 15 Position detection means 16 Speed limit acquisition means 17, 21 Communication means 19 Non-volatile memory 20 Management means 23 Management database

Claims (20)

When the vehicle is running, get information about the vehicle speed,
Get information about the speed limit at the driving location,
If the vehicle speed exceeds the speed limit, repeat the calculation of the product of the excess vehicle speed and the unit time,
An overspeed prevention method for a vehicle, wherein when the integrated value of the products exceeds a predetermined determination reference value, it is determined that the speed is over and a predetermined overspeed prevention measure is executed. The vehicle is equipped with a communication means capable of communicating with a base station,
The vehicle overspeed prevention method according to claim 1, wherein when determining that the speed exceeds, the communication means communicates violation information to the base station. The vehicle is equipped with a vehicle speed limiter that limits the vehicle speed,
3. The vehicle overspeed prevention method according to claim 1 or 2, wherein the vehicle speed limiter is operated when it is determined that the speed is over.   The method for preventing overspeed of a vehicle according to any one of claims 1 to 3, wherein when the engine is determined to be in excess of speed, if the engine is stopped in that state, the engine is not restarted.   The vehicle overspeed prevention method according to any one of claims 1 to 4, wherein a warning is given to a driver of the vehicle when the integrated value approaches a predetermined range from the determination reference value.   6. The calculation of the product is repeated after clearing the integrated value if the integrated value is equal to or less than a predetermined allowable reference value within a predetermined period. The overspeed prevention method of the vehicle as described in 2.   6. The integrated value is evaluated based on a total travel distance of the vehicle, and if the integrated value is evaluated to be greater than a predetermined value, it is determined that the vehicle has been vigorously driven. The vehicle overspeed prevention method according to one.   The vehicle overspeed prevention according to any one of claims 1 to 7, wherein if the integrated value does not exceed a predetermined evaluation reference value within a predetermined period, it is determined that the vehicle is performing excellent driving. Method. The determination of excess speed is performed by a processing device including a nonvolatile memory,
The method for preventing overspeed of a vehicle according to any one of claims 1 to 8, wherein when determining that the overspeed is exceeded, overspeed information is stored in the nonvolatile memory.   10. The vehicle overspeed prevention method according to any one of claims 1 to 9, wherein the determination of overspeed is performed by adding an adjustment value that can be arbitrarily adjusted to the speed limit.   The vehicle overspeed prevention method according to any one of claims 1 to 10, wherein a vehicle speed acquired as information on the vehicle speed is corrected in anticipation of an error.   The method of preventing excess vehicle speed according to any one of claims 1 to 11, wherein the excess of the vehicle speed is calculated at a predetermined fixed speed instead of the speed limit.   The vehicle according to any one of claims 1 to 12, wherein a calculated value obtained by multiplying the difference between the speed and the speed limit by a power and multiplying by a unit time is used instead of the product. How to prevent overspeed.   The difference between the vehicle speed and the speed limit is multiplied by the unit time even when the vehicle speed is equal to or lower than the speed limit, and the product is included in the calculation target of the integrated value. The vehicle overspeed prevention method according to one.   15. If the vehicle speed is equal to or less than the speed limit and the vehicle speed is equal to or less than a predetermined stop reference value, it is determined that there is a traffic jam / stop state, and the product is not included in the calculation target. The vehicle overspeed prevention method as described.   When the vehicle speed is equal to or less than the speed limit and the difference between the vehicle speed and the speed limit is equal to or less than a predetermined exclusion reference value, it is determined that the traffic is jammed / stopped, and the difference is multiplied by the unit time to calculate the integrated value. 15. The method of preventing overspeed of a vehicle according to claim 14, wherein the vehicle is excluded from a target for calculating a value.   When the vehicle speed is equal to or lower than the speed limit, and the ratio of the speed limit to the absolute value of the difference between the vehicle speed and the speed limit is equal to or greater than a predetermined exclusion ratio value, it is determined that there is a traffic jam / stop state, and the difference is The vehicle overspeed prevention method according to claim 14, wherein the unit time is multiplied and excluded from a target for calculating the integrated value.   The vehicle overspeed prevention according to any one of claims 1 to 17, wherein an abnormality is detected when it is determined that a difference between the vehicle speed and the speed limit is larger or smaller than a predetermined reference value. Method.   19. The vehicle overspeed prevention method according to claim 1, wherein the determination reference value or the predetermined period is changed according to a past overspeed state.   The integrated value is attached to a driver of the vehicle, and even if the driver changes the vehicle, the integrated value is succeeded to the changed vehicle. Vehicle overspeed prevention method.

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