JPS6253259A - Device for indicating distance between cars - Google Patents

Abstract

PURPOSE:To maintain a distance between cars at a safety value by detecting parameters for calculating the safety distance between cars on the basis of vehicle speed, live load and slant angle in the advancing direction of vehicle, calculating and indicating the safe distance between cars according to the detected value. CONSTITUTION:A speed sensor 1 for detecting vehicle speed, a live load sensor 2 for detecting liver load and a inclination sensor 3 for detecting a slant angle corresponding to road gradient in the advancing direction of vehicle are provided to generate the detection outputs of these sensors to the input of CPU 4. In this CPU, a safe and proper distance between cars for the vehicle speed, live load and slant angle is calculated or a safe and proper distance between cars corresponding to the respective detecting outputs is read out of a memory 5 to be indicated on a distance-between-cars indicating section 6. And the running of the vehicle is controlled by monitoring the distance between cars indicated on said indicating section 6 to maintain said actual distance at the said indicated distance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an appropriate inter-vehicle distance display device that can display a safe and appropriate inter-vehicle distance to a vehicle in front. In particular, the present invention relates to an inter-vehicle distance display device that detects vehicle speed, loaded weight, and driving environment, and displays a safe and appropriate inter-vehicle distance corresponding to the detected output.

[Background]

When following the vehicle in front of you, you need to pay close attention to its movements and maintain a safe following distance to avoid rear-ending collisions even if the vehicle in front of you suddenly stops.

The distance between vehicles depends on the weather, road conditions, loaded weight,
It must be changed appropriately depending on vehicle speed, etc. A safe following distance is to maintain a distance equal to the stopping distance between you and the vehicle in front. Therefore, for example, if you increase the speed of the vehicle, the stopping distance t) will increase, so the following distance will also increase accordingly. I have to take a lot.

[Conventional technology]

Until now, no device has been developed that quantitatively displays such a safe inter-vehicle distance to the driver to alert the driver. Therefore, in reality, the driver makes his own judgment based on the stopping distance data according to the vehicle speed and his own experience.
Or, based on intuition, they determine a distance between vehicles that is considered safe.

[Problem that the invention seeks to solve]

In this way, the distance between vehicles is left solely to the driver's judgment or intuition. Therefore, due to incorrect judgment regarding a wide variety of vehicle driving conditions, or due to self-righteous intuition, it is possible to find a safe distance between the vehicle in front and the vehicle in front. Sometimes I forget to open it.

The present invention has been made in view of these problems, and an object of the present invention is to provide an inter-vehicle distance display device that can display a safe and appropriate inter-vehicle distance.

[F-stage to solve the gap]

The present invention comprises a means for detecting the speed If of a motor vehicle, a means for detecting the loaded vehicle of the motor vehicle, a means for detecting an inclination angle in the direction of movement of the motor vehicle, and a means for detecting the detection outputs of each of the means listed in 1. As an input, the speed 1 (t) of the self-image width J, corresponding to the loaded vehicle ¥ and the inclination angle ° The present invention is characterized by comprising a display means for displaying a safe and appropriate intermediate distance.

[For production]

The present invention provides a method for calculating a safe and appropriate inter-vehicle distance by means of detecting the speed of a vehicle, detecting the vehicle loaded on the vehicle, and detecting the inclination angle of the vehicle in its traveling direction. A safe and appropriate distance i? is calculated by detecting the parameters of and inputting each detection output. By displaying the li distance in the first row of the display, it is possible to easily recognize a safe and appropriate inter-vehicle distance corresponding to the speed, loaded weight, and inclination angle of the vehicle.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The figure is a block diagram showing one embodiment of the present invention.

In the figure, each detection output of a speed sensor 1 that detects the vehicle speed, a loaded weight sensor 2 that detects the loaded weight, and an inclination sensor 3 that detects the inclination angle in the direction of travel of the vehicle corresponding to the slope of the road is transmitted to a microcomputer 4. is input. Connected to the microcomputer 4 is a memory 5 that stores safe and appropriate inter-vehicle distances calculated in advance for various vehicle speeds, loaded weights, and inclination angles. The output of the microcomputer 4 is connected to an inter-vehicle distance display section 6 provided at the driver's seat.

The loaded weight sensor 2 is based on "Vehicle overloaded weight display device" (Utility Model Application No. 48-465, filed by the same applicant).
88). This loaded weight detection section is installed between the frame and the axle suspension spring, and has a structure that detects the deflection of the axle suspension spring. By extracting a detection output corresponding to this deflection, the loaded weight can be detected.

The speed sensor 1 and the tilt sensor 3 utilize known techniques.

The microcomputer 4 inputs the detection outputs of the sensors 1 to 3, calculates a safe and appropriate inter-vehicle distance based on the vehicle speed, loaded weight, and inclination angle, and displays the result on the inter-vehicle distance display section 6, or A safe and appropriate inter-vehicle distance corresponding to each detection output is read out from the memory 5 and displayed on an inter-vehicle distance display section 6.

Incidentally, the inclination sensor 3 detects the slope of the road on which the vehicle is traveling, and generally when outputting a detected value indicating a downhill slope, the inter-vehicle distance will be shorter than when outputting a detected value indicating an uphill slope. is set so that it is long.

The slope of this road is one of the driving environments, and there are various other factors in the driving environment, such as the condition of the road surface and whether it is day or night, and these are automatically detected by each sensor and imported into the microcomputer 4. , it can also be used as a parameter for calculating a safe and appropriate inter-vehicle distance. For example, a well-known raindrop sensor detects raindrops to detect road surface conditions, and a well-known illuminance sensor is used to detect day and night conditions and when driving in a tunnel, thereby displaying a more reliable, safe and appropriate following distance. can be done.

Note that the raindrop sensor and the illuminance sensor can also be replaced with manual switches. In this case, by operating each manual switch when the road surface is wet due to rain or when driving at night, a safe and appropriate inter-vehicle distance for the driving environment can be displayed.

However, in any case, the safe following distance displayed is only a guideline, as the actual following distance is subjective to the driver, and there are individual differences in the amount of time it takes to drive without braking. Not too much.

〔Effect of the invention〕

As explained above, the present invention displays a safe and appropriate inter-vehicle distance on a display means in the driver's seat in response to driving environments such as vehicle speed, loaded baking soda, road slope, road surface condition, and day/night. Sa-1 is a great experience. Therefore, the following distance, which conventionally relied on the driver's judgment based on experience or intuition, is indicated as an appropriate IF number (I/!), making it easier to maintain a safe following distance and preventing rear-end collisions. There are effects such as being able to.

[Brief explanation of drawings]

The figure is a block diagram showing one embodiment of the present invention. l...Speed sensor, 2...Loading weight sensor, 3...
・Tilt sensor, 4...Microcomputer, 5...
・Memory, 6... Distance between vehicles^11 display section. -8,)

Claims (1)

[Claims] (1) Means for detecting the speed of the vehicle; Means for detecting the loaded weight of the vehicle; Means for detecting the angle of inclination in the direction of travel of the vehicle; and the detection outputs of each of the above means being input, speed,
A vehicle-to-vehicle gap characterized by comprising: an arithmetic circuit that calculates a safe and appropriate inter-vehicle distance in accordance with a loaded weight and an inclination angle; and a display means that displays the safe and appropriate inter-vehicle distance outputted from the arithmetic circuit. Distance display device. (2)
The arithmetic circuit includes means for storing safe inter-vehicle distances calculated in advance for various speeds, loaded weights and inclination angles of the vehicle, and a means for storing safe following distances calculated in advance for various speeds, loaded weights and angles of inclination of the vehicle, and for storing safe following distances in accordance with each input detection output. The inter-vehicle distance display device according to claim 1, further comprising means for reading out a corresponding safe and appropriate inter-vehicle distance.