JPS6078874A - Steering angle indicator for wheel - Google Patents

Abstract

PURPOSE:To make easy the steering of a car when starting or putting into a garage by indicating the actual steering angle of a wheel during driving to a driver by means of inputting and arithmetically processing the output signals of an angle detector. CONSTITUTION:An angle detector 1, which is intended for detecting the steering angle of a wheel, detects indirectly that angle by detecting the rotating angle of a steering wheel by use of a potentiometer. The output signal from the angle detector 1 is calculated in a control circuit 3, and the result is displayed on a steering angle indicator 2. The control circuit 3, after initialization processing in Step 1, reads the output signal from the angle detector 1 in Step 2, performs arithmetic processing in Step 3, and causes the indicator 2 to function in Step 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a wheel steering angle display device for detecting and displaying the steering angle of a wheel in an automobile.

[Prior art]

When you want to move the car to a desired position or direction while moving a short distance, such as when starting a car or parking it in a garage, you need to know what the actual steering angle of the wheels is when driving. It is necessary to make large changes in the steering angle while being aware of the

However, in general, the relationship between the steering angle of the wheels and the rotation angle of the steering wheel in a car is such that the rotation angle of the steering wheel is 900 degrees (approximately 2.5 turns) for the maximum steering angle of the wheels, which is about 10 degrees. Because of this, it is difficult to recognize the actual steering angle of the wheels when starting or parking the vehicle in the garage, where the steering wheel is moved left and right without adjusting the speed at low speeds. may be mistaken.

[Summary of the invention]

The present invention has been made in view of these problems, and its purpose is to display the actual steering angle of the wheels so that the steering angle can be easily adjusted even when starting or parking the vehicle. It is an object of the present invention to provide a steering angle display device for a wheel that can be operated.

In order to achieve such an object, the present invention provides an angle detector for detecting the steering angle of a wheel, and an output signal of the angle detector which is input and subjected to predetermined arithmetic processing, and then outputs a display signal. The vehicle is equipped with a control circuit and a display that receives the display signal and displays the steering angle of the wheels according to the content of the display signal.

〔Example〕

Hereinafter, the present invention will be described in detail along with examples.

1 to 3 are diagrams showing a first embodiment, with FIG. 1 being a block diagram and FIG. 2 being a flow chart.

Reference numeral 1 denotes an angle detector that detects the steering angle of the wheels.

The angle detector 1 indirectly detects the steering angle θ of the wheel by detecting the rotation angle of the steering wheel using a potentiometer. 2 is a display for displaying the steering angle. FIG. 3 is a diagram showing the appearance of the display section 4 of the display device 2, and shows that the steering angle θ is 3 degrees to the right. 3 is angle detector 1
The microcomputer system is a control circuit that inputs the output signal of , performs necessary processing, and then outputs a display signal to display the steering angle of the wheels according to this output signal on the display 2. It is configured.

Figure 2 is a flowchart of the program for control circuit 3.
It shows. After initialization in step s1, step S2
The output signal of the angle detector 1 is read at step S3, arithmetic processing is performed at step S3, and the display 2 is operated to display the angle θ at step S4.

Note that the angle detector 1 does not necessarily need to detect the rotation angle of the steering wheel using a potentiometer, and may directly detect the angle f of the wheel.

FIG. 4 and FIG. 5 are diagrams showing the second embodiment, and are diagrams showing the display section of the display device. Note that the block diagram and flowchart in this embodiment are the same as those in the first embodiment, and therefore will be omitted.

Reference numeral 5 denotes a display section of the display device 2, on which a schematic structure of the automobile is displayed as a picture using a fluorescent display tube or liquid crystal. 501 is a pattern representing the vehicle body, 502 is a pattern representing the rear wheels,
503 is a pattern representing the front wheel. As shown in FIG. 5, the pattern 503 representing the entire front wheel has five oval patterns representing the cross section of the tire potentially drawn.
One ellipse is selected and manifested according to the output of the control circuit. When the steering angle of the wheels is displayed as a picture as in this example, the actual steering force angle can be intuitively recognized.
You can quickly operate the handle.

FIG. 6 is a block diagram for explaining the third embodiment, and FIG. 7 is a flowchart thereof.

In the figures, the same or corresponding parts as in the first embodiment are given the same reference numerals.

Reference numeral 6 denotes a mission switch for detecting a set position of a transmission (not shown), and its output signal is input to the control circuit 3.

After the control circuit 3 is initialized in step S1, the control circuit 3 is initialized in step S1.
At step S2, the output signal of the angle detector 1 for detecting the steering angle of the wheels is read and arithmetic processing is performed at step S3. Next, in step S5, it is determined based on the signal from the mission switch 6 whether the transmission is set to the reverse or first forward gear. When the gear is set to reverse or the first forward gear, the process proceeds to step S4, where the steering angle of the wheels is displayed on the display 3, and in other cases, no display is made at all.

According to this embodiment, redundant display can be restricted during normal driving when display of the steering angle is not required.

FIG. 8 is a block diagram for explaining the fourth embodiment, and FIG. 9 is a flowchart thereof.

In the figures, the same or corresponding parts as in the first and third embodiments are given the same reference numerals.

Reference numeral 7 denotes a display switch that can be operated arbitrarily by the driver, and its output is input to the control circuit 3.

After being initialized in step S1, the control circuit 3 reads the output signal of the angle detector 1 for detecting the steering angle of the wheels in step S2, and performs arithmetic processing in step S3.

Everything up to this point is the same as the first to third embodiments described above. After step S3, the process proceeds to step S6, where it is determined whether the display switch 7 is on or off. When it is determined that the steering angle is on, the process proceeds to step S4 and the steering angle of the wheels is displayed on the display 3. When it is determined that the transmission is off, the process proceeds to step S5, and it is determined based on the signal from the mission switch 6 whether the transmission is set to the reverse gear or the first forward gear. When the gear is set to reverse or the first forward gear, the process proceeds to step S4, where the steering angle of the wheels is displayed on the display 3; otherwise, no display is made.

According to this embodiment, the steering angle of the wheels can be always displayed regardless of the set position of the transmission, or it can be displayed depending on the set position of the transmission.

FIG. 10 is a flowchart for explaining the fifth embodiment. The configuration of this embodiment is the same as that shown in FIG. 1, and as shown in FIG. Angle θ.

An indicator lamp 8 is provided to indicate that the limit has been reached.

In this embodiment, steps S1 to S4 are the same as in the first embodiment. That is, initialization (Sl)
, reading the output signal of the angle detector 1 (Sl), arithmetic processing (S3), and displaying the angle on the display 2 (S4). Next, the process proceeds to step s7, where the magnitude 1θ1 of the wheel steering angle θ is the maximum angle θ.

A full judgment is made as to whether or not it has been reached, and if it has been reached, the process advances to step S8 and all of the display lamps 8 are turned on. Maximum angle θ. If the value has not been reached, the indicator lamp 8 is left off.

Note that a buzzer or a voice synthesizer may be provided in place of the indicator lamp 8 to issue an audible warning.

According to this embodiment, since it is separately displayed whether the steering angle of the wheels has reached the maximum angle, steering wheel operation becomes easier.

〔Effect of the invention〕

As described above, the wheel steering angle display device of the present invention includes an angle detector that detects the entire steering angle of the wheel, and an output signal of this angle detector that is inputted and subjected to predetermined arithmetic processing. The simple structure includes a control circuit that outputs a display signal after the above-mentioned display signal is input, and a display device that inputs the display signal and displays the steering angle of the wheels according to the contents of the display signal. Since the driver can recognize the steering angle of the wheels of the vehicle, there is no need to make mistakes in steering operations when starting the vehicle or parking the vehicle in the garage.

[Brief explanation of drawings]

Figure 1 is a block diagram of the first embodiment of the present invention, Figure 2 is a flowchart, Figure 3 is a diagram showing the display section of the display, and Figures 4 and 5 are displays of the second embodiment. 6 is a block diagram of the third embodiment, FIG. 7 is a flowchart, FIG. 8 is a block diagram of the fourth embodiment, and FIG. 9 is a diagram showing the display section of the device.
The figure is a flowchart, FIG. 10 is a flowchart of the fifth embodiment, and FIG. 11 is a diagram showing the display section of the display. 1... Angle detector, 2... Control circuit, 3...
·display. Figure 1 Figure 2 Figure 955 Crane Figure 7

Claims (2)

[Claims] (1) An angle detector for detecting the steering angle of the wheels; a control circuit for inputting the output signal of the angle detector and outputting a display signal after performing predetermined arithmetic processing; What is claimed is: 1. A wheel steering angle display device comprising: a display device which inputs and displays a wheel steering angle according to the contents of the display signal; (2) The steering angle display device for wheels as set forth in claim 1, wherein the display device displays a pictorial representation of the steering angle of the wheels.