JPH0737200Y2 - Running condition evaluation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a traveling condition evaluation device used for evaluating the traveling condition of a road on which a traffic signal is installed.

[Prior Art] Conventionally, the signal display timing of each traffic signal is evaluated by a system diagram in order to smoothly drive a vehicle on a general road. This system diagram shows the ratio of the green traffic light time and the red traffic light time of the traffic signal to the position of each intersection, so that when the car runs at the design speed, the number of stoppages and the signal waiting time due to the signal will be reduced. The signal display timing of is designed and evaluated.

And in order to evaluate the actual driving situation of the car,
A driving condition recorder is used. This running condition recording device measures running time, stopping time, and running distance of an automobile, records the measured time data and distance data on a two-dimensional plane, and also records changes in running speed. The actual driving situation is evaluated with reference to this record.

[Problems to be Solved by the Invention] As described above, conventionally, the signal display timing of each traffic signal is predicted at the design speed, and the actual traveling condition is evaluated by separately recording the traveling condition separately from the signal display timing. The time data and distance data recorded by the device are used.

When evaluating the traveling situation based on this recorded data, it is necessary to determine from the distance data whether or not the stop time of the time data is due to the traffic signal.

However, it is difficult to determine whether or not the traffic signal stops due to the distance data, and it is not easy to accurately reflect the actual traveling condition in the evaluation of the signal display timing of the traffic signal.

The present invention has been made to solve such disadvantages, and an object thereof is to obtain a traveling condition evaluation device capable of accurately reflecting an actual traveling condition in a signal display timing of a traffic signal.

[Means for Solving the Problem] A traveling situation evaluation device according to the present invention has a system diagram creating means, a traveling situation calculating means, a traveling locus producing means, and a writing means.

The system diagram creation means is designed distance between each intersection,
From the signal cycle length, the ratio of the green traffic light time to the red traffic light time of the traffic light, and the design speed, a system diagram is created that displays the traffic signal display timing and the pass band according to the design speed.

The running condition calculation means calculates distance data indicating the actual distance traveled from the number of revolutions of the tire of the automobile and the outer circumference of the tire, and calculates speed data from the calculated distance data and time data indicating the running time output from the clock. Then, the actual distance data, speed data, time data, and intersection position data obtained from the intersection passage signal input by operating the push button switch every time when passing the intersection where the traffic signal is installed are stored.

The traveling locus creating means compares the stored intersection position data with the intersection position of the system diagram, corrects the error of the distance data, and corrects the distance data and the time data and the ratio of the signal cycle length of the traffic signal of the time data. The actual running locus is created from and.

The writing means writes the created actual travel locus and speed data in the system diagram created in advance by the system diagram creating means.

[Operation] In this invention, the distance data, the speed data, the time data, and the intersection position data are calculated and stored from the actual traveling state of the vehicle, and the actual traveling locus is created from the stored distance data and the traveling time.

When creating this actual travel locus, the distance data is adjusted to the position of the intersection of the system diagram showing the signal display timing of each traffic signal by the intersection position data.

Then, by writing the actual running locus that matches the position of the intersection of the system diagram on the system diagram, and by writing and displaying the speed data as well, the predicted travel of the design of the system diagram and the actual running situation can be displayed on the system diagram. Compare directly.

[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention.

As shown in the figure, a traveling condition calculating means 1 for calculating the traveling condition of an automobile on a general road includes a distance / speed calculating unit 2, a clock 3 for counting the time during traveling, and a storage unit 4 including, for example, a RAM. The distance / speed calculation unit 2 receives a rotation speed N from a rotation speed detection sensor 5 that detects the rotation speed of an automobile tire.
Then, the distance data D during actual traveling and the speed data v are calculated from the tire outer peripheral length L input in advance from the input unit 6 and the traveling time sent from the timepiece 3. Storage unit 4 is distance
Distance data D and speed data v sent from the speed calculator 2,
Intersection position data D _S calculated by the intersection passage signal input by operating the pushbutton switch 7 every time when passing the intersection where the time data t and the traffic signal are installed.
Is temporarily stored.

System diagramming means 8 designed distance D _SO between intersections which are preset signal period length of the traffic signal T, from the green signal time of the traffic signal T _B and the red signal time T _R, the road the vehicle is traveling Create a system diagram showing the signal display timing at the intersection.

The travel locus creating means 9 has a distance data correction unit 10, a time ratio calculation unit 11 and a travel locus creation unit 12. The distance data correction unit 10 compares the intersection position data D _S stored in the traveling situation calculation means 1 with the design distance D _SO between the intersections to detect whether or not the distance data D has a measurement error. If there is, the distance data D is corrected. The time ratio calculator 11 calculates the ratio between the time data t and the signal cycle length T of the traffic signal.
The travel locus creation unit 12 creates an actual travel locus from the ratio of the distance data sent from the distance data correction unit 10 and the time data t. The writing means 13 writes the created actual traveling locus in the system diagram and also writes the speed data v during the actual traveling. In addition, 14 is a display means and 15 is a printer.

Next, the operation of the traveling condition evaluation device configured as described above will be described.

First, the system diagram creating means 8 inputs the preset design distance D _SO between the intersections, the signal period length T of the traffic signal, the green signal time T _B and the red signal time T _{R of} the traffic signal, and FIG. as shown in, taking the position of the distance and the traffic signal on the horizontal axis and the signal period on the vertical axis, each traffic signal S ₁
To create a system diagram displaying the signal display timing at the ratio of green light time T _B and the red signal time T _R to ~S every _16.
Further, the system diagram creating means 8 displays the pass bands A and B depending on the design speed on the created system diagram. In addition, the pass band A shows the case of going up, and the pass band B shows the case of going down.

Then, detected and stored in the traveling condition calculation means 1 the driving situation when traveling vehicle actually through the traffic signal S ₁ to S ₁₆ that operates at the signal display timing is displayed on the system diagram.

When detecting this traveling condition, as shown in the flow chart of FIG. 3, the tire outer peripheral length L of the vehicle equipped with the traveling condition calculating means 1 is input by the input unit 6 and stored in the distance / speed calculating unit 2. (Step S1). In this state, for example, the automobile is run in the upward direction from the position of the traffic signal S ₁ , the number of rotations N of the tire is counted by the rotation number detection sensor 5, and the result is sent to the distance / speed calculator 2 (step S 2). A timekeeping signal is sent from the clock 3 to the distance / speed calculation unit 2 at the same time when the vehicle starts running.

The distance / speed calculation unit 2 calculates the actual distance data D from the input tire outer peripheral length L, the tire rotation speed N, and the time signal.
(M) and speed data v (Km / H) are calculated (step S
3). In addition, an intersection passage signal is input to the distance / speed calculation unit 2 from a push button switch 7 operated when the traveling vehicle reaches the traffic signals S _{1 to} S ₁₆ , and the intersection passage signal and the distance data are input. From D to each traffic signal S ₁ ~ S
Intersection position data D _S (m) indicating the distance between ₁₆ is calculated (step S4).

The distance data D, the speed data v, and the intersection position data D _S are sequentially calculated by the distance / speed calculation unit 2 until the vehicle starts traveling on the traffic signal S ₁ and passes the traffic signal S ₁₆ , Storage unit 4 together with time data t from the start
(Steps S5 and S6).

Next, the operation for writing the actual traveling data stored in this way into the system diagram will be described with reference to the flowchart shown in FIG.

First, the distance data correction unit 10 causes the distance data D when actually driving.
Then, the intersection position data D _S and the design distance D _SO between the intersections are read, the difference between the intersection position data D _S and the design distance D _SO is calculated, and it is detected whether or not the distance data D has a measurement error.
If there is an error in the distance data D, the error is corrected and the distance data matching the intersection positions S _{1 to} S ₁₆ of the system diagram is calculated (step 11). This distance data D
Is sent to the traveling locus creating unit 12.

The time ratio calculation unit 11 calculates the ratio between the time data t and the signal cycle length T of the traffic signal in order to match the unit of the time data t with the cycle (%) indicating the time of the system diagram, and the travel locus creation unit 12 Send (step S12).

The traveling locus creating unit 12 creates an actual traveling locus from the sent distance data D and the ratio of the time data t to the signal cycle length T, and sends it to the writing means 13. (Step S13).

As shown in FIG. 5 (a), the writing means 13 matches the start position of the actual traveling locus C sent to the position of the traffic signal S ₁ of the system diagram, and sets the traveling locus C in the upward direction to the system diagram. Write in. Further, the writing means 13 reads out the speed data v stored in the traveling condition calculation means 1 and adjusts the traveling start position to the position of the traffic signal S ₁ so that the actual traveling is performed as shown in FIG. 5 (b). The speed change status is written in the system diagram (step S14).

Further, the actual traveling situation in the down direction is detected in the same manner as the traveling situation in the up direction, the created traveling locus D is written in the system diagram, and the speed change is also shown in FIG. 5 (c). Write on the diagram.

In this way, the system diagram in which the actual traveling conditions are written is displayed on the display means 14 and printed by the printer 15.

By checking the displayed system diagram, the signal display timing of the traffic signal, the design speed, etc. can be directly compared with the actual traveling situation and evaluated.

[Effects of the Invention] As described above, the present invention calculates and stores distance data, speed data, time data, and intersection position data from the actual traveling state of the vehicle, and calculates the intersection data from the stored distance data and traveling time. Since the actual travel path that matches the position is created and this travel path is written in the system diagram, it is possible to directly compare the predicted travel of the design and the actual driving situation on the system diagram. The situation can be evaluated accurately.

Also, since the actual traveling speed can be written in the system diagram, the traveling situation at a position other than the intersection can also be evaluated.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a configuration diagram showing a system diagram created by the system diagram creating means of the above embodiment, and FIGS. 3 and 4 are respectively the above embodiment. FIG. 5 is a flowchart showing the operation, and FIG. 5 is a configuration diagram showing a system diagram in which the actual traveling state is written. 1 ... Driving status calculation means, 2 ... Distance / speed calculation unit, 3
…… Clock, 4 …… Memory unit, 5 …… Rotation speed detection sensor, 6
...... Input unit, 7 ... Push button switch, 8 ... System diagram creation means, 9 ... Running locus creating means, 10 ... Distance data correction section, 11 ... Time ratio calculation section, 12 ... Running locus creation 13 ... Writing means, 14 ... Display means, 15 ... Printer.

Claims (1)

[Scope of utility model registration request] 1. A design distance between each intersection and a signal period length,
A system diagram creating means for creating a system diagram showing the traffic signal display timing and the pass band according to the design speed from the ratio of the green time to the red traffic time of the traffic signal and the design speed, and the number of revolutions of the tire and the outer circumference of the tire. Distance data indicating the actual travel distance is calculated from the calculated distance data, speed data is calculated from the calculated distance data and time data indicating the travel time output from the clock, and the actual distance data, speed data, time data, and traffic A running condition calculation unit that stores intersection position data obtained from an intersection passage signal input by operating a pushbutton switch each time a traffic signal passes through an intersection, and the stored intersection position data and the intersection of the above system diagram. Compare the position, correct the error in the distance data, correct distance data and time data And the data of the signal cycle length of the traffic signal of the time data and the actual running locus creating means, and the created actual running locus and speed data are written in the system diagram created beforehand by the system diagram creating means. A running condition evaluation apparatus comprising: a writing unit;