KR950008493B1 - Control method of head up display invehicle - Google Patents

Abstract

In the apparatus including a speed detector (4), a mode selecting switch (8) for setting a warning speed data against overspeed, a filter unit (9), a microprocessor (10), a headup display driving unit (12), and a headup display (13), the control method includes the steps of initializing the microprocessor upon starting, setting a warning speed through the switch (8), receiving the speed signal from the detector (4) to calculate an actual vehicle speed, comparing the actual speed with the warning speed, and turning off or on the headup display (13) according to the compared results, thereby maintaining the safety vehicle speed.

Description

Vehicle speed display control method for vehicle head-up display

1 is a head-up display control block applied to the present invention.

2 is a flowchart of a head-up display vehicle speed display control method applied to the present invention.

* Explanation of symbols for main parts of the drawings

1: ignition 2: constant voltage part

3: DC / DC converter 4: vehicle speed detector

5: direction indication signal detection unit 6: high beam headlight detection unit

7: fuel detection unit 8: mode selection switch

9: filter unit 10: microcomputer

12: head up display driving unit 13: head up display unit

The present invention relates to a vehicle speed display control method of a head up display for a vehicle. In particular, a head up display for reflecting and displaying information such as fuel, driving speed, direction indication, headlight, etc., on a vehicle's driving windshield is displayed. The present invention relates to a vehicle speed display control method of a head-up display for a vehicle that displays only when the vehicle is overspeed.

In the conventional vehicle, the display method of the head-up display is to display the fuel, direction indication, headlight status while driving or when a predetermined set value is reached, while the driving speed of the vehicle is continuously reflected on the windshield of the vehicle. It is designed to display, which not only obstructs the driver's vision during driving, but also provides a cause of increasing fatigue, and the head-up display is always displayed by the image displayed regardless of the driving speed regardless of speed or low speed of the vehicle. At the time of fixing speed, it is difficult to recognize as a warning signal has a problem that decreases the efficiency.

Accordingly, an object of the present invention is to display the driving display displayed at all times when driving the vehicle only when the speed is stopped, thereby resolving the driver's field of vision due to the display at all times, as well as recognizing the caution warning due to the speeding. In order to achieve the object of the present invention, the present invention provides a warning speed setting step of setting a warning speed as a mode selection switch in an initial state when a vehicle is started, a vehicle speed calculation step of detecting a vehicle speed and calculating a vehicle speed, and the vehicle speed calculation step And a speed display step of judging and comparing the current speed and the set warning speed, and a speed display step of turning on or off the speed display according to the state determined in the speed comparison step.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a control block diagram of a head-up display used in the present invention, including an ignition 1 for supplying power from a battery, and a constant voltage unit 2 for supplying a DC voltage supplied from the ignition 1 to a constant voltage. A DC / DC converter 3 for converting the supplied DC voltage into a DC voltage, a vehicle speed detection unit 4 for detecting a vehicle speed of the vehicle, a direction indication signal detection unit 5 for detecting a direction indication signal, High beam headlight detection unit 6, a fuel detection unit 7 for detecting the fuel filling state of the vehicle, and a mode selection switch unit 8 for setting the warning speed due to the overspeed of the vehicle for observing the front view during night driving. ), A filter unit 9 for filtering the respective unit signals, a microcomputer 10 for outputting a controlled signal by controlling a signal input through the filter unit 9 by a predetermined program, and the microcomputer ( Head-up according to the signal output from 10) And a head-up display driving section 12 which drives the display, to the hayeoseo consists of a head-up display unit 13 for displaying the received signals up display driving section 12 of the head.

In the drawing, reference numeral 11 is an oscillation circuit for supplying a clock signal for driving the microcomputer 10.

2 is a flowchart of the vehicle speed display method of the head-up display applied to the present invention. The initialization step 200 is initialized when the vehicle is turned on and all segments of the display unit 13 are initialized in the initialization step 200. After the display driving step 201 and the display driving step 201, the microcomputer 10 scans the respective parts, and whether the signal of the mode selection switch SW1 (SW2) is input from the mode selection switch 8; In the mode selection switch driving determination step 202, the mode selection switch driving determination step 202, a speed display step 203 for displaying a speed at the time of the mode selection switch drive input, and the speed display step 203 In the first mode selection switch press determination step 204 of determining whether the mode selection switch SW1 is pressed, and the mode selection switch SW1 is pressed in the first mode selection switch press determination step 204, Display value Is increased by 5, and if the mode selection switch SW1 is not pressed in the first mode selection switch press determination step 204, it is determined whether the mode selection switch SW2 is pressed. A second mode selection switch press determination step 206, and a speed display decrease step 207 of decreasing the speed display value by 5 when the mode selection switch SW2 is pressed in the second mode selection switch press determination step 206; In the first and second mode selection switch deciding step 208 for determining whether all of the first and second mode selection switches are depressed, the first and second mode selection switch deciding step 208 are all pressed. Warning speed setting step (250) comprising a warning speed setting step (209) to set to a predetermined warning speed according to the mode selection switch is pressed, and the mode selection switch (SW1) in the mode selection switch drive determination step (202). (SW2) is not entered A vehicle speed calculation step 210 for calculating a vehicle speed input through the surface vehicle speed detection unit 4, a current speed calculated in the vehicle speed calculation step 210, and a warning speed set in the warning speed setting step 250; Comparing the first speed comparison step 211 to determine whether the warning speed is greater, and the second speed comparison decision step (213) to compare the current speed is greater than the warning speed in the first speed comparison decision step 211 A speed judging step 260 consisting of a speed judging step, a speed indicating turn-off step 212 for turning off the speed indication if the current speed is less than the warning speed in the speed judging step 260, and a speed indicator if the current speed is greater than the warning speed Is constituted by a speed display step 270 comprising a speed display dot and a light off step 214 for turning on and off a predetermined cycle.

Referring to the effects of the present invention configured as described above are as follows.

First, when the vehicle is started, the microcomputer 10 goes to the display driving step 201 in the initialization step 200 and drives the head up display driving unit 12 to light up all segments of the head up display 13.

In the state as described above, the microcomputer 10 goes to the mode selection switch driving determination step 202 to determine whether the mode selection switch SW1 or SW2 signal is input, thereby selecting any one of the mode selection switch SW1 and SW2. If the mode selection switch signal is input, the microcomputer 10 goes to the speed display step 203 of the warning speed setting step 250, displays the speed, and then goes to the first mode selection switch pushing judgment step 204. If it is pressed by judging whether the mode selection switch SW1 is pressed, the microcomputer 10 goes to the speed display increasing step 205 and increases by 5 units according to the number of times of pressing, and is displayed on the head-up display 13. If the mode selection switch SW1 is not pressed, the microcomputer 10 proceeds to the second mode selection switch pressing decision step 206, and determines whether the mode selection switch SW2 is pressed. Speed table Going to the time-decreasing step 207, the speed is reduced by 5 units and displayed on the head up display 13, and the mode selection switch SW2 is pressed in the second mode selection switch deciding step 206. ) Is not pressed, the microcomputer 10 goes to the first and second mode selection switch pressing step 208 and flashes three times at 1 second intervals while the desired warning speed is fixed at the mode selection switch SW1 and SW2. And off.

When the vehicle is driven in the state where the warning speed is set as described above, the microcomputer 10 goes to the vehicle speed calculation step 210 and calculates the vehicle speed through the vehicle speed detection unit 4.

Subsequently, the microcomputer 10 goes to the first speed comparison judgment step 211 of the speed judging step 260 to determine whether the warning speed set in the warning speed setting step 209 is greater than the current speed detected during the driving. If the warning speed is greater than the current speed, the microcomputer 10 goes to the speed display turn off step 212 of the speed display step 270 to turn off the speed display, and the current speed is determined in the first speed comparison judgment step 211. If greater than the warning speed, the microcomputer 10 goes to the second speed comparison step 213 to determine whether the current speed is greater than or equal to the warning speed. If the current speed is greater than or equal to the warning speed, the microcomputer 10 displays the speed. Going to the point-off stage 214, the speed display is displayed while turning on / off the head display 13 at 0.5 second intervals to inform the driver of the warning speed.

As described above, in the head-up display, the present invention does not display the speed of the vehicle being driven by setting a predetermined warning speed at or below the warning speed. · By turning off the warning, it is possible to drive while maintaining a safe speed, and at the same time to solve the problem of disturbing the driver's vision caused by the continuous speed display.

Claims (1)

A vehicle speed detection unit 4 for detecting a vehicle speed of the vehicle, a mode selection switch unit 8 for setting a warning speed due to overspeed of the vehicle, a filter unit 9 for filtering the signal of each unit, and the filter unit 9 The microcomputer 10 for controlling the signal input through the predetermined program to output a controlled signal, and the head-up display driver 12 for driving the head-up display in accordance with the signal output from the microcomputer 10 And, the head-up display device for a vehicle having a head-up display unit 13 for receiving and displaying the signal of the head-up display driving unit 12, the process of initializing the microcomputer 10 at the start-up of the vehicle ( 200, a warning speed setting process of receiving the warning speed set through the mode selection switch unit 8, 202 and 250, and receiving a vehicle speed signal from the vehicle speed detection unit 4 to obtain a current vehicle speed. Car to calculate In the vehicle speed comparison process 260 for comparing the calculation process 210, the set warning speed and the calculated vehicle speed, and the current vehicle speed in the vehicle speed comparison process 260 does not exceed the set warning speed. Outputs a control signal to the head up display driver 12 to turn off the head up display unit 13, and outputs a control signal to the head up display driver 12 when the current vehicle speed is greater than or equal to the set warning speed. Vehicle speed display control method of the head-up display for a vehicle, characterized in that consisting of a speed display process (270) for lighting the head-up display unit (13).