JPH02227611A - Safe traveling controller - Google Patents

Abstract

PURPOSE:To improve the safety rate of traveling by reading a display means which displays whether or not the current traveling state of a vehicle is safe from operation data and travel information and the quantity of variation in points indicating the degree of safe operation. CONSTITUTION:The memory 34 of a drive recording part 30 is stored with operation data detected by a speed sensor 12, a brake sensor 14, and other sensors 16, current points found by an arithmetic part (ALU) 26, etc., with time. Further, the recording part 30 is provided with a display 36 to display the current points found by the ALU 26 and messages for safe traveling together with an alarm tone from a speaker 38. Further, even when the current points become less than a specific value which is determined as the range of the safe traveling, the alarm tone is outputted from the speaker 38. Further, an analytic system 40 is connected to the recording part 30 of the vehicle after its traveling and an analytic part 44 which is controlled by a computer 42 reads the storage contents of the memory 34 of the recording part 30 and analyzes the traveling contents of the vehicle, so that the result is outputted on a printer 46.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a safe operation management device.

(Prior Art) Safe operation management is the most important issue for companies that operate vehicles, such as freight transportation companies, passenger transportation companies, and driving schools. A tachograph is conventionally known as a device for managing the operation of a vehicle. A tachograph has a speed axis in the radial direction of a disk-shaped recording paper, and a time axis in the circumferential direction, so that the tachograph rotates once every 24 hours, for example. Since the speed corresponding to the time is recorded on the recording paper, the speed record can be used as a reference for safe driving management since it can be determined whether the vehicle in question is violating the speed limit.

(Problems to be Solved by the Invention) However, the above tachograph has the following problems.

Since tachograph records are analyzed after the vehicle in question has finished operating, it is impossible to provide guidance to drivers on safe driving while the vehicle is in operation.

Therefore, it is an object of the present invention to provide a safe driving management device that allows drivers to check whether their driving style is safe or not, or whether or not they are currently driving safely. purpose.

(Means for solving problems) In order to solve the above problems, the present invention includes the following configuration.

That is, it includes a sensing means for detecting operation data such as vehicle speed, and stores each reference point assigned in advance to each operation mode in order to score the degree of safe operation according to the operation mode of the vehicle. A first memory means to keep
a first calculating means for obtaining operation information such as a change in acceleration of the vehicle based on the operation data;
or a search means for detecting the current vehicle operation mode based on the operation information and searching the first storage means for a reference point corresponding to the operation mode, and accumulating the reference points sent from the search means; Alternatively, a second calculating means for calculating a score indicating the current degree of safe driving by accumulatively decrementing from a predetermined score, and a second calculating means for storing at least changes over time in the score indicating the degree of safe driving. The vehicle is characterized by comprising a storage means and a display means for displaying at least a score indicating the current degree of safe driving determined by the second calculation means.

(effect) The effect will be explained.

Whether or not the current vehicle operation mode is safe can be easily determined from the operation data and/or operation information by reading the display means indicating the amount of change in the score indicating the degree of safe operation. Furthermore, since a score indicating the current level of safe driving is displayed on the display means, the driver can immediately know whether or not the driver has been driving safely since the start of the operation.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a safe driving management system using the safe driving management device 10 of this embodiment.

12.14.16 is a sensor that is a sensing means, and is a speed sensor 1 that detects the speed of the vehicle as operation data.
2, a brake sensor 14 that detects the presence or absence of brake operation as operation data, and other sensors 16 that detect operation data such as a sensor that detects the accelerator opening.

In this embodiment, safe driving management using a speed sensor 12 and a brake sensor 14 will be explained as an example.

18 is a control unit (hereinafter referred to as CU) which also serves as a search means, and controls the operation of the safe operation management device 10 according to a basic program stored in the ROM 20.

22 is a memory card (hereinafter referred to as MC) which is a first storage means.
), and each reference point for deducting points from predetermined points for each driving mode of the vehicle is stored. In other words, points are deducted each time a driver performs a dangerous operation, and the points indicate the degree to which the driver is driving safely. Table 1 shows an example of the contents stored in the MC 22.

In other cases, if you accelerate unnecessarily to stop immediately -
10th grade, etc., and the reference points for deducting points are predetermined by subdividing Mr. B. The reference points corresponding to these operating modes do not necessarily need to be stored in the MC 22, and if the ROM 20 has sufficient capacity, they may be stored in the ROM 20 as the first storage means.

24 is a RAM, which temporarily stores the operation data, operation information, current scores, etc.

A calculation unit (hereinafter referred to as ALU) 26 serves as first and second calculation means, and calculates acceleration, which is operation information, from changes in the speed of the vehicle detected by the speed sensor 12, for example. In addition, although the ALU 26 will be described in detail later, the CUIB detects the current vehicle operation mode from the operation data and/or operation information, and searches the MC 22 for a reference point for deducting points corresponding to the current vehicle operation mode. Once the reference points have been determined, calculations are also performed to cumulatively subtract the reference points from the driver's current points. Note that two ALUs 26 may be provided as first and second calculation means.

Reference numeral 28 denotes a key switch which is an input means, and allows commands and data to be input to C018 from the outside.

Reference numeral 30 denotes an operation recording section, which can be connected to and detached from CUIB via a connector 32.

The driving recording section 30 is provided with a memory 34 which is a second storage means. As the memory 34, a storage device such as a large-capacity RAM or a memory card is used.

The memory 34 stores operation data detected by the sensors 12, 14, and 16, operation information calculated and obtained by the ALU 26, current points obtained by the ALU 26, etc. over time. .

The driving record unit 30 is equipped with an LCD display 36 which is a display means, and in addition to displaying the current points determined by the ALU 26, it also displays messages for safe driving, such as messages such as "danger of sudden start". can also be displayed together with an alarm sound and/or an alarm sound from the speaker 38. Furthermore, even if the current score falls below a predetermined value determined as a safe carry range, the speaker 38 outputs an alarm sound and/or an alarm sound. Note that the driving record section 30 is installed in the driver's seat, so that the driver cannot view the display 36 or use the speaker 3.
It is now possible to hear sounds from 8. Further, the speaker 38 does not need to be provided in the driving recording section 30, and may be provided separately and independently.

Reference numeral 40 denotes an analysis system, which is, for example, a computer system installed in the operation control room of a transportation company. The analysis unit 44, which is connected to the driving record unit 30 of the vehicle whose operation has ended, is read out from the memory 34 of the drive record unit 30, and the analysis unit 44, which is controlled by the computer 42, reads out the contents stored in the memory 34 of the drive record unit 30, and according to the instructions of the computer 42, Analyze vehicle operation details. The analysis results are sent to the printer 4 in a predetermined format.
It is printed out to 6.

Next, an example of the operation of the safe operation management device 10 configured as described above will be explained with reference to the flowchart of FIG. 2.

The driver connects the driving record section 30 to the CUIB via the connector 32 before starting the trip. Then, the key switch 28 is operated to start (step 100).

When the safety operation management device 10 starts, the contents of the RAM 24 and the memory 34 are cleared (step 102).
).

The driver selects the first point (for example: 50) from the key switch 28.
0 point) is input and stored in the memory 34 and RAM 24, and 500 is displayed on the display 36 (step 104). Here, a method was adopted in which the driver inputs the starting points, but it may be programmed so that the starting points are automatically set and stored during the initial setting in step 102.

When operation is started, the speed sensor 12 continuously sends operation data of the vehicle speed, and the brake sensor 14 sends operation data indicating the use of the brake each time the brake is operated to the CUIB (step 106). This operation data is sent from CUIB to the memory 34 in real time, and is stored moment by moment in the memory 34 together with time data output from the clock of CUIB (step 108).

When CUIB is monitoring the speed data, for example, because you suddenly stepped on the brakes, a specific time t (e.g. 0.5 seconds)
If there is a change in speed within
6 (step 110). At this time, if the speed before the change is ■0 and the speed after the change is vE, then g = (V
O-VB)/li", the g found here
is stored in the memory 34 as operation information together with the operation data of the brake operation (step 112).
24 also temporarily stores the values of g, VO, and VE.

Therefore, CUIB is the acceleration g temporarily stored in the RAM24.
A reference point for deducting points corresponding to is searched from the data in the MC 22 (step 114). g stored in RAM24
is -0.3G and VO is 40ksi/h, the reference point for deduction is determined to be -20 (see Table 1), CUl
B temporarily stores the value of -20 in the RAM 24, and
The AL026 is ordered to perform point deduction calculation (step 116). At this time, the aforementioned message can be displayed on the display 36. The ALU 26 calculates 500-20=480 and temporarily stores it in the RAM 24 as the current point. C
UlB reads out the current points 480 after point deduction from the RAM 24 and stores them in the memory 34 (step 118). Then, the current points 480 are displayed on the display 36 (step 120).

Next, CUIB compares whether the current points are higher than the borderline score (e.g. 200 points) that is preset and stored in the ROM 20 (or MC 22) to determine whether the operation is within the safe range (step 122 ), if the current score is greater than 200, the process returns to step 106, and CUIB monitors the operation data etc. until the next point deduction operation. On the other hand, if the current score is less than 200 points up to step 122, CUIB issues a warning sound and/or warning voice from the speaker 38 to suggest safe driving to the driver (step 124), and further CUIB It is checked whether the point is zero (step 126), and if it is not zero, the process returns to step 106, and if it is zero, the operation is stopped and the contents of the memory 34 are maintained (step 128).

When the operation is completed, the driver inputs an instruction to end the operation from the key switch 28, removes the driving record section 30 from the vehicle, and submits it to the operation manager. Note that the driving record section 30 includes a memory 3.
4 backup batteries (not shown) are provided.

The operation manager connects the driving record section 30 to the analysis section 44 of the analysis system 40 and instructs the start of analysis via the computer 42. The analysis unit 44 reads out the contents of the memory 34 and analyzes operation data, operation information, changes in points, etc. over time. The result is then output from the printer 46. The output from this printer 46 not only records the contents recorded on a conventional tachograph, but also records the driving situation of each driver in detail, so that it can be used as data for safety management.

In the above example, points were deducted by determining sudden acceleration or sudden deceleration by determining the acceleration, but when transporting people like a taxi or bus, there is a problem of discomfort due to driving, and sudden acceleration , it becomes necessary to judge sudden deceleration in relation to riding comfort. In that case, g may be calculated using the following conversion formula using the perceived acceleration g''.

g ”= (VO-VE)-G/VE (where G is the gravitational acceleration, and when VE=O, VE is an approximate value of 0).

Nao, here t' (VO-VE)/VE=α, then g
°=α・G. However, α differs depending on the type of vehicle, etc., and the formula for deriving α is a relational formula including VO and VE, and the following formula is given.

(X = 10gto [(VO-VE)/VEI, a = (VO-VE)/log+oVE, a =
log+o (VO-VE)/νE, a = (V
O-VE)/(1,-Vt/I!) (1 is the base of the natural logarithm) Therefore, it is sufficient to appropriately select from among the above.This also makes it possible to judge the comfort of the ride.

Up to this point, we have explained the acceleration of the vehicle, but based on speed data, it is also possible to detect wave-like driving in which the speed changes many times in a certain period of time and deduct points.

Alternatively, points may be deducted if the vehicle distance is measured using a radar and the inter-vehicle distance is less than a predetermined distance. In this case, in addition to radar, determining that the inter-vehicle distance is abnormal is based on a unique phenomenon in which, for example, when the inter-vehicle distance becomes short, the relationship between speed data and time becomes a sawtooth wave. It is also possible to determine that there is an abnormality in the following distance when the vehicle detects an outgoing cover turn. Furthermore, the brake sensor 14 may measure the number of times the brake is used within a certain distance, and if the brake is used frequently, points may be deducted.

In addition, in combination with data from door switches, boarding switches, switches to identify actual/empty vehicles, and sensors that identify the presence or absence of a handbrake, it is possible to perform more detailed safety operation management for each driving mode.

Various preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments. For example, acceleration may be determined using a G meter instead of an arithmetic method. It goes without saying that many modifications can be made without departing from the spirit of the invention, such as calculating points by using a cumulative point addition method.

(Effects of the Invention) When the safe driving management device according to the present invention is used, it is possible to make the driver recognize the current degree of safe driving during driving in an objective and easy-to-understand format in the form of a score. Therefore, the driver is always reminded to drive safely, and the safety factor of the driver can be increased. Particularly when transporting goods or people, it is effective in preventing damage to the goods and poor riding comfort.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a safe driving management system using a safe driving management device according to the present invention, and FIG. 2 is a flowchart showing an example of the operation of the safe driving management device. DESCRIPTION OF SYMBOLS 10... Operation management device, 12.14.16... Sensor, 18... Control part, 22... Memory card, 26...
...Arithmetic unit, 34...Memory, 36...Display.

Claims (1)

[Scope of Claims] 1. Sensing means for detecting operation data such as speed of the vehicle; and a sensing means assigned in advance to each operation mode in order to score the degree of safe operation according to the operation mode of the vehicle. a first storage means for storing each reference point; a first calculation means for calculating operation information such as an acceleration change of the vehicle based on the operation data; and a first calculation means for calculating operation information such as a change in acceleration of the vehicle based on the operation data; a search means for detecting the current driving mode of the vehicle and searching the first storage means for a reference point corresponding to the driving mode; and a search means for accumulating or storing the reference points sent from the search means. a second calculation means for calculating a score indicating the current degree of safe operation by accumulatively decrementing the points; a second storage means for storing at least a change over time in the score indicating the degree of safe operation; A safe driving management device comprising: display means for displaying a score indicating the current degree of safe driving determined by the second calculation means.