JP2553888B2 - Driving information display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a driving information display device that can be used in a trial assistance system, which is a motor sport.

(Prior Art) Many proposals have been made and implemented for a so-called travel assistance system that displays a map including a travel route on a display panel in a vehicle. The applicant of the present application also proposed a vehicle navigation system (Japanese Patent Laid-Open No. 60-120208) or the like that can correct the traveling distance of the vehicle with respect to the altitude and calculate and display an accurate distance between two points. .

(Problems to be Solved by the Invention) In motor sports such as trials, there are various types of trial courses and setting of places, and it is meaningless to simply display a map or a distance.

There is also a strong demand to record what kind of course and what kind of driving was done in trials, etc. so that it could be used as a material for demonstrating the safety of the drive.

An object of the present invention is to provide a travel route input display device,
It is an object of the present invention to provide a traveling information display device that displays the maximum speed and the maximum lateral acceleration in relation to the traveled trajectory.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a traveling route data display device according to the present invention includes a flash sensor, a compass, a lateral acceleration sensor, the speed sensor, a compass, and a lateral acceleration sensor. The current position and speed at that time from the data of the compass and the speed sensor, and the lateral acceleration from the data of the lateral acceleration sensor are calculated and calculated, and the maximum speed from the start to that time, It is composed of a controller having a register for recording the maximum lateral acceleration and the position where those are generated, and a display device for displaying the maximum speed, the maximum lateral acceleration, and the position where these are generated.

(Examples) Hereinafter, the present invention will be described in detail with reference to the drawings and the like.

This embodiment is constructed for the purpose of trial support.

If this device is installed, not only the characteristic course but also the trial competition can be performed anywhere, and it is possible to record the traveling data about a certain traveling route or the scanning information about the course input in advance.

In this embodiment, the course is input in advance and the data when the entered course is run can be recorded.

FIG. 1 is a block diagram showing a driving information display device according to the present invention.

The operation input device is provided with a start / stop button 1 and a setting button 8.

The start / stop button 1 is an input means for starting and stopping activation of this operation. In addition, the setting button 8
Is an input means for setting a start point (S) and an end point (G) of the trajectory.

The speed sensor 2 is a sensor for inputting vehicle speed data. Since the time integral value of the speed is the distance, it has a function as a distance sensor for inputting the distance data.

The azimuth meter 3 is a means for inputting data relating to azimuth.

The lateral acceleration sensor 7 inputs lateral acceleration data. The controller 4 is an arithmetic control circuit formed mainly of a CPU, and the arithmetic output of this circuit is output to and displayed on the display device 6 via the interface 5.

In addition to the CPU, the controller 4 is provided with a grid pattern generator that is generated around a reference point and a register that stores the maximum speed and the maximum lateral acceleration up to that point.

Next, the basic principle of how to obtain the movement locus (movement position) in this apparatus will be briefly described.

The movement distance per unit time (i-1 to i seconds) is Li
And

This Li (scalar amount) is obtained from the speed sensor 2 mounted on the vehicle. It should be understood that the speed sensor functions as a distance sensor when calculating the distance.

If the traveling direction of the vehicle is θi (based on true north N) from the azimuth data input from the azimuth meter 3, the vehicle is represented by the following equation from i-1 second. (Xi, y
i) only moved. xi ＝ Li sin θi yi ＝ Li
cosθi Using this formula, the movement locus to Pi (∫xi, ∫yi) point after i seconds is ∫xi ＝ xi ＋ ∫xi-1 (∫x ₀ = 0) ∫yi ＝ yi ＋ ∫yi -1 (∫y ₀ = 0).

This calculation can be performed at intervals, and the display device 6 can be driven via the interface 5 to display the movement trajectory to the Pi point.

 Next, the display will be mainly described with reference to FIG.

When the power switch is turned on, the display device 6 displays the screen shown in FIG.

 When the setting button 8 is pressed, the S display blinks in the center.

A grid centered on the start point on the screen (scale line)
Is attached.

 From this point, the course can be set.

As shown in FIG. 3 (B), the surface draws a locus on the screen according to the running state.

 The width of the initial grid is every 250M.

When the travel exceeds 500M in the X or Y direction, increase the scale of the grid as shown in Fig. 3 (C).

That is, when the position indicating the running point becomes 500M or more in the X direction or the Y direction, the scale of the grid is doubled as shown in FIG.

After that, if it exceeds 1000M, double it, and if it exceeds 2000M, double it.

When the user presses the setting button again at the destination, a G display showing the destination point (goal) is made as shown in FIG. 3 (D).

As a result, the dirt trial course has been set.

 You can also display the stopwatch.

Fig. 2 shows the controller for the course setting described above.
6 is a flowchart showing the operation of the CPU.

(Step 100) The power is turned on and the state of start and setting standby is formed.

(Step 101) It is checked whether the setting button has been pressed. Wait until the setting button is pressed.

(Step 102) When the setting button is pressed, the display device 6 displays a 250M grid pattern (basic pattern).

(Step 103) The fact that the first grid pattern is displayed is stored (n ← 1).

(Step 104) Calculation of the X and Y components of the traveled distance for each basic unit time. It depends on Li and θi described above.

(Step 105) It is determined whether or not the X coordinate and the X component from S at the current moment exceed 500M.

 If it exceeds, proceed to (107).

(Step 106) It is determined whether or not the Y coordinate from S at this point and the Y component exceed 500M.

 If it exceeds, proceed to (107).

(Step 107) Change the magnification. In the current example, n is 1 + 1 and 2
Becomes

(Step 108) The grid interval is set to 250 × n, 500M in this example.

(Step 109) The magnification of the display of the point of the traveling locus is reviewed according to the previous n or the changed n, and if there is a change, it is changed.

(Step 110) Monitor the setting button and wait until the setting button is pressed (10
4 → 110) is repeated.

(Step 111) Monitor the setting button, and when the setting button is pressed, finish the course setting, display the goal, and wait.

It is possible to perform a trial on the course set as described above and display the running information of the trial on the display device.

The car will perform a dirt trial from the start point of S to the goal of G.

When you press the start button, the stopwatch is activated, Blinking Displayed on the screen. Thereby, the driver can know whether the traveling is along the course (Fig. 3 (E)).

The car reaches the goal and presses the start / stop button.

The stopwatch is stopped, and the maximum vehicle speed value generated during running is the generation point, the maximum lateral acceleration value and the generation point,
The number of times the engine stalls and the number of times the back gear has been put in are displayed (Fig. 3 (F)).

When the start button is pressed again, the game returns to the competition state and the competition becomes possible.

Press the setting button to reset and return to the course setting state.

Next, a program for displaying the traveling information of the CPU of the controller 4 for displaying the maximum speed and the maximum lateral acceleration when traveling on the course input as described above will be described with reference to FIG.

FIG. 4 is a flow chart of a travel information display mode for recording and displaying data of maximum speed and maximum lateral acceleration, which is travel information.

(Step 200) The power is turned on and the start and standby states are established.

(Step 201) Check whether or not the start / stop button is pressed.

It waits until the button is pressed, and when it is pressed, the trial starts.

(Step 202) Set the content of the register to which MV (= maximum speed value) is input to 0,
Set the contents of the register to which MTG (= maximum lateral acceleration) is input to 0.

Set MVX (= X coordinate of the point where MV occurred) and MVY (= Y coordinate of the point where MV occurred) to 0,
Set the contents of the register to which MTGX (= X coordinate of the point where MTG occurred) and MTGY (= Y coordinate of the point where MTG occurred) are input to 0.

(Step 203) The moving amount and the moving direction are calculated from the contents of the speed sensor (= distance sensor) 2 and the azimuth meter 3.

The X component of the mileage per basic unit time is Xi, and Y
The ingredient is Yi.

(Step 204) The movement amounts ∫xi and ∫yi after i seconds are displayed on the display device 6 using the above-described movement trajectory calculation formula.

(Switch 205) The speed Vi is calculated from the speed sensor and the lateral acceleration TGi is calculated from the lateral acceleration sensor every unit time.

(Step 206) MV is compared with the speed Vi obtained in the above step.

(Step 207) When Vi is larger than MV, the contents of the MVX register are changed to Vix (= ∫xi) and the contents of the MVY register are changed to Viy (= ∫yi).

(Step 208) Change the contents of the MV register to Vi.

(Step 209) Compare the MTG with the lateral acceleration TGI.

(Step 210) When the lateral acceleration TGi is larger than MTG, input the lateral acceleration TGi in the register of the MTG input register and set it to MTG.
And

In addition, the contents of the MTGX register are set to TGix (= ∫xi) and MT
Change the contents of the GY register to TGIy (= ∫yi).

(Step 211) Repeat (201 → 211) until the start / stop button is pressed (pressed when the goal of the trial is reached), and update the contents of the register every time the maximum speed or maximum lateral acceleration occurs. .

(Step 212) When the goal is reached and the start / stop button is pressed, a mark is generated at each position where the maximum speed and the maximum lateral acceleration occur, and the MV value, MTG
Display the value.

(Effects of the Invention) As described in detail above, the traveling information display device according to the present invention displays the maximum speed, the maximum lateral acceleration, and the position where they occur from the time the display device is activated until the goal is reached. be able to.

Therefore, after traveling, the maximum speed and the maximum lateral acceleration during traveling can be displayed, so that the driver can sufficiently examine this and analyze the possibility of occurrence of danger such as the vehicle falling over.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a traveling information display device according to the present invention. FIG. 2 is a flow chart showing a basic input operation of the CPU of the controller when the travel route data is input in advance by the travel information display device according to the present invention. FIG. 3 is an explanatory view showing a display example of the display device of the traveling information display device according to the present invention. FIG. 4 is a flow chart of a travel information display mode for recording and displaying data of maximum speed and maximum lateral acceleration, which is travel information. 1 ... Start / Stop button of operation input device 2 ... Speed sensor (= distance sensor) 3 ... Direction meter 4 ... Controller 5 ... Interface 6 ... Display device 7 ... Lateral acceleration sensor

Claims (1)

(57) [Claims] 1. A speed sensor, an azimuth meter, a lateral acceleration sensor, and data from the speed sensor, the azimuth sensor, and the lateral acceleration sensor are taken in every unit time, and the current position and its value are obtained from the data of the azimuth meter and the speed sensor. The controller has a register that records the velocity at this time, the lateral acceleration from the data of the lateral acceleration sensor, and records the maximum velocity, the maximum lateral acceleration, and the position where they occur from the time of activation, and the maximum velocity, A travel information display device composed of a display device for displaying the maximum lateral acceleration and the position of occurrence thereof.