JPH0234444A - Steering interlocking lamp control device - Google Patents

Abstract

PURPOSE:To contrive the improvement of driving visibility enabling a device to correspond to every road condition by preparing two or more expressions as the arithmetic expression of an irradiation direction, corresponding to a steering angle, in a control part, which calculates the irradiation direction of a lamp corresponding to the steering angle of a handle, and selectably applying these expressions. CONSTITUTION:In a control device 10, a signal from a sensor part 1, mounted to a steering handle, is amplified and shaped in a buffer amplifier 2 and input to a control part 3 here calculating a deflection angle of right and left lamps 5L, 5R corresponding to an output of the sensor part 1. Being based on this arithmetic result, a mechanism part 6, provided in the lamps 5L, 5R, turns an auxiliary reflecting mirror 7 by a motor M, and the objective direction is irradiated. Here in the control part 3, two or more arithmetic expressions are built, and whichever arithmetic expression to be applied can be arbitrarily selected by a driver operating a control part 4 in accordance with a change of conditions of urban road running time, suburban road running time, curved road running time, etc.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a control device for a lamp, also called a curve lamp, which directs the irradiation direction in the direction of travel in conjunction with the operation of a steering wheel of an automobile.

[Conventional technology]

FIG. 4 shows a conventional control device 20 of this type, in which a signal from a sensor section 1 attached to a steering wheel (not shown) is amplified and amplified by a buffer amplifier 2.
After the molding, the control section 23 calculates and outputs the deflection angles of the left and right lamps 5R, 5L corresponding to the output of the sensor section 1, and the lamp 5
The auxiliary reflecting mirror 7 is rotated by a motor M by a mechanism section 6 provided in the R15L to irradiate the target direction. In addition, what is indicated by the reference numeral 8 in the figure is a potentiometer for detecting the amount of movement of the auxiliary reflector 7 or the motor M, and the output of this potentiometer 8 is sent to the mechanism section 6 through a feedback circuit 9. The signal is fed back through the control section 23, and is stopped when it matches the signal from the control section 23.

[Problem to be solved by the invention]

The conventional control device described above controls the lamp 5R corresponding to the output of the sensor section 1. It calculates and outputs only one type of deviation angle of 5L, and for example, the correlation between the steering angle of the steering wheel and the steering angle of the front wheels is used as the calculation formula. However, when observing actual road conditions in detail, the preferable angle of deviation of the lamps 5R and 5L is not necessarily satisfied only by the above-mentioned relational expressions. The lamp 5R is naturally preferable when the lamp is composed of a function curve such as a sine curve or a parabola, or a compound curve such as a clothoid. The deflection angles of lamps 5L and 5L will be different, and furthermore, there may be cases where it is not desirable to deflect lamps 5R and 5L, such as in small S-shaped oil passages. Although it was expensive, it had a problem in that it had little practical effect.

[Means to solve the problem]

As a specific means for solving the above-mentioned conventional problems, the present invention provides digital means for detecting the operating angle of a steering wheel, a control unit that calculates a direction of illumination of a lamp corresponding to the operating angle, and It consists of a mechanism section that rotates the irradiation direction of the lamp in a predetermined direction using the output from the section.
By providing a steering-linked lamp control device, the control unit is provided with a plurality of formulas as calculation formulas for the irradiation direction corresponding to the operation angle, and the plurality of formulas can be freely selected. This is intended to solve the above-mentioned conventional problems by making it possible to correspond to actual road conditions.

【Example】

Next, the present invention will be explained in detail based on an embodiment shown in the drawings. In order to facilitate understanding, parts that are the same as those in the conventional example will be described with the same reference numerals, and descriptions of some overlapping parts will be omitted. What is indicated by the reference numeral 10 in FIG. 1 is a steering-linked lamp control device (hereinafter abbreviated as control device 10) according to the present invention, and this control device 10 is provided with a sensor section 1 similar to the conventional example, The amount of operation of the handle (not shown), that is, the rotation angle can be detected. In this detection method, for example, a slit is provided in a disc attached to the steering wheel, and a photoelectric element is used to generate pulse signals φ1 and φ1 with a phase shift of 90 degrees. Any known technique for obtaining φ2 and a pulse signal φ3 indicating the reference position may be used. The pulse signal φ1. φ21 and φ3 are amplified and shaped by the buffer amplifier 2 described in the conventional example, and then calculated by the control unit 3. According to the present invention, the control unit 3 has a plurality of calculation formulas built in, and which calculation formula is adopted. The operation section 4 connected to the control section 3 can be used to select whether to do the following. To explain the above configuration more specifically, the control unit 3 is configured using, for example, a microcomputer, and the control unit 3 includes a control unit 3 that corresponds to the operation 1 of the steering handle and an oil path such as an arc or a compound curve. Lamp 5R, 5L
A switch provided as the operating section 4 can be used to select any one of the first operation mode, second operation mode, or third operation mode. It is sufficient to select one of the tables and use a so-called table search method to obtain the deflection angles of the lamps 5R and 5L corresponding to the amount of operation of the steering wheel. Also,
The comparison table does not necessarily have to be limited to calculated values using a calculation formula; for example, it may be based on a driving experiment using an actual vehicle to find a preferable relationship between the amount of operation of the steering wheel and the deflection angles of the lamps 5R and 5L. is also good. Figure 2 shows the above explanation in graph form, where the horizontal axis shows the amount of rightward and leftward operation of the steering wheel, and the vertical axis shows the deviation angle of lamps 5R and 5L. It is marked. The line indicated by the symbol M1 in the figure shows the deviation angle characteristics of the lamps 5R and 5L when the first operation mode is set, for example. This is shown as a characteristic that responds linearly. Similarly, the characteristic line M2 is when the second operation mode is set,
At this time, when the steering wheel is operated to the left, the deviation angles of the lamps SR and 5L are made to increase in an accelerating manner as the amount of operation increases, and this is based on data from actual driving. However, during actual driving, it would be troublesome for the lamps 5R and 5L to respond differently each time there is a slight direction correction or lane change, so when the amount of operation is small, the lamp 5R
, 5L is suppressed, and conversely, when making a small turn such as a left turn, the vehicle is sufficiently illuminated in the direction of travel. Furthermore, to explain the present invention in detail, the operation of the steering wheel to the right and the operation to the left are not necessarily the same as when driving straight (
For example, the characteristic line M2 is shown when driving on the left, and when the steering wheel is operated to the left, the lamp 5R
If the 5L responds immediately, it will dazzle the oncoming vehicle, so it is designed to suppress the response for most of the amount of operation of the steering wheel, and only respond when the amount of operation is large, such as when making a U-turn. . Since calculations are performed in this manner, it is preferable that the control section 3 operates digitally, and the use of the above-mentioned microcomputer is appropriate. Further, the output from the control section 3 is the lamp 5R, 5L.
At this time, if the mechanism section 6 operates in an analog manner, the output from the control section 3 is naturally transmitted to the D/A converter (
(not shown), but many of the microcomputers mentioned above include this function, so if this type of computer is adopted, a special auxiliary circuit for this purpose is required. It's not necessary and convenient. Since the subsequent portions are the same as those described in the conventional example, detailed description thereof will be omitted here. What is shown in FIG. 3 is a graph showing another embodiment of the present invention, and in this embodiment, as one of the plurality of operation modes, the lamp 5R and the lamp 5L are set to have different values with respect to the operating amount of the handle. When turning to the right, the lamp 5R responds primarily as shown by the characteristic line 5r in the figure, and when turning to the left, the lamp 5L responds primarily as shown by the characteristic line 51. The government is trying to respond. As explained above, by providing multiple operating modes, the driver can select the optimal operating mode depending on changing conditions, such as when driving in the city or in the suburbs, or changes in blood circulation conditions. , This selection makes it possible to optimize the driving visibility.

【Effect of the invention】

As explained above, according to the present invention, a plurality of expressions are prepared in the control section as calculation expressions for the lamp irradiation direction corresponding to the operating angle of the steering wheel, and the plurality of expressions can be freely selected by the driver. This makes it possible to adapt to any road condition and improve driving visibility.
This has an excellent effect on improving safety.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of a steering-linked lamp control device according to the present invention, FIG. 2 is a graph showing the operation of the same embodiment, and FIG. 3 is a diagram showing the operation of another embodiment of the present invention. The graph shown in FIG. 4 is a circuit diagram showing a conventional example. 1...Sensor section 3...Control section 4...Operation section 5R, 5L...Lamp 6...Mechanism section

Claims (1)

[Claims] a digital means for detecting an operating angle of a steering wheel; a control section for calculating a lamp irradiation direction corresponding to the operating angle; and a mechanism section for rotating the lamp irradiation direction in a predetermined direction based on an output from the control section. A steering-linked lamp control device comprising: a plurality of formulas prepared in the control section as calculation formulas for the irradiation direction corresponding to the operation angle, and the plurality of formulas can be freely selected.