Control switch device of cruise control system of automobile

Abstract

The invention relates to the field of a cruise control system of automobiles and provides a control switch device of a cruise control system of automobiles, which is similar to the existing similar device, and is characterized in that the starting, releasing and setting of the functions of the cruise control can be realized through the operation on a clipper or a knob, the set speed of an automobile can be discretionarily accelerated, decelerated for flexible control, and has no limit for low speed and roads; when a sole leaves an accelerator pedal, the functions of the cruise control are started and the cruising speed can be reinstated; when the sole treads the accelerator pedal, the functions of the cruise control are released, and the utilization ratio of the cruise control system can be effectively improved; the control switch device also comprises an A / D converter, the clipper is a linear displacement sensor, the knob is an angular displacement sensor which is embedded into and arranged on a steering wheel panel or near a steering wheel, and can also be embedded into and arranged on a shift knob; and the output end of the linear displacement sensor or the angular displacement sensor is connected with the signal input end of the A / D converter of an electronic control unit (ECU) of the cruise control system.

Description

(1) Technical field: [0001] The invention relates to the field of cruise control systems for automobiles. (two) background technology: [0002] With the development of the automobile industry and the improvement of people's living standards, the number of automobiles has increased continuously, and the number of people who have obtained the qualifications for automobile driving has also increased. However, the number of major traffic casualties has also increased. [0003] Although the car safety devices in the market are constantly emerging and improving, and the degree of automation is constantly improving, such as seat belts, safety air bags, ABS anti-lock braking systems, cruise control systems and intelligent car collision avoidance systems. But for a long time, traffic accidents cannot be completely eliminated. Among them, the traffic accidents caused by the driver's inability to effectively brake in time or even step on the accelerator by mistake account for a very h...

AI Technical Summary

Problems solved by technology

[0007] (2) Cancellation function: when the CAN (release button) is pressed or the clutch pedal is stepped on or the brake pedal is stepped on or the shift lever is placed in the "P", "R", "N" or "1" position, the setting will be released immediately. Speed ​​cruise function, but the above-mentioned controlled speed continues to be stored;

But this system itself also has the following defects: because the vehicle speed regulation function of the system control switch device under the constant speed cruise state can only fine-tune the vehicle speed, after causing the system to set the vehicle speed, that is, under the constant speed cruise state, the control The working efficiency of the switch to adjust the speed is too low. Even if the manufacturer simply changes the software to improve the working efficiency of the control switch to adjust the speed, it still cannot adjust the speed flexibly, that is, it loses the function of speed fine-tuning acceleration and deceleration; so the manufacturer can only adopt conservative methods for safety. The design concept, when the speed is set to be lower than 60 kilometers per hour, the system will automatically release the functional restrictions; and there are strict restrictions on road conditions, it must be used on expressways or fully enclosed roads; on non-closed roads, the road conditions are complex, such as on national roads, some The impact of underpowered small motor vehicles, pedestrian crossings on city streets and traffic light intersections can create obstacles for cruising cars

At this time, even if the system does not have the automatic release function of 60 kilometers per hour to limit the use, it cannot control the speed of the vehicle as flexibly as the accelerator pedal, and the constant speed cruise has no practical significance. Instead, it becomes more troublesome because of the complicated operation of the release and setting operation switch.

Although there is also a car intelligent anti-collision system and cruise control system integrated together, it can automatically slow down or take braking measures when encountering obstacles, but due to the complexity of the technology, poor stability, high cost, and psychological effects of drivers As far as it is concerned, it is a passive measure and cannot be absolutely trusted by drivers.

Therefore, in summary, the utilization rate of the existing cruise control system is not high, and the potential safety hazards of inability to timely and effectively emergency brake or even stepping on the accelerator pedal by mistake still plague us all the time.

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