Control switch device of automobile constant-speed cruise system

Abstract

The invention provides a control switch device of an automobile constant-speed cruise system, belonging to the field of the automobile constant-speed cruise system. The control switch device is similar to the prior control switch device and is characterized in that a setting / decelerating key and a restoring / accelerating key are pressure sensors or displacement sensors and are connected with an electronic control unit (ECU) of the automobile constant-speed cruise system, wherein the (ECU) comprises an analogue-digital converter (A / D converter); the displacement strokes of the displacement sensors are additionally provided with springs which have automatic resetting functions; under the non-constant speed cruise state, the setting / decelerating key and the restoring / accelerating key have the functions of setting the speed of the automobile, starting the constant-speed cruise and restoring the automobile to the original speed after starting the constant-speed cruise, and under the constant-speed cruise state, the setting / decelerating key and the restoring / accelerating key have the functions of flexibly accelerating and decelerating the set speed of the automobile at random without being limited by the low speed and the road so as to effectively improve the utilization rate of the automobile constant-speed cruise system; if the setting / decelerating key and the restoring / accelerating key are pressed for a longer time, the set speed of the automobile can be accelerated and decelerated more, or the set speed of the automobile can be accelerated and decelerated less; and if the setting / decelerating key and the restoring / accelerating key are pressed under more force, the efficiency of accelerating and decelerating the set speed of the automobile can be higher, or the efficiency of accelerating and decelerating the set speed of the automobile can be lower.

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) Elimination function: When the CAN (release button) is pressed, the clutch pedal, the brake pedal are pressed, or the shift lever is placed in the "P", "R", "N" and "1" positions, the constant speed cruise function is immediately released , however, the speed of the above regulation 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.

In addition, due to the design of the control switch RES / + (recovery / accelerator key), there are potential safety hazards. When using the recovery function, if compared with the current traffic conditions, the set cruising speed is too high, and even the driver has forgotten the original setting. speed, there will be a danger

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 that cannot be 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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