What is the difference between adaptive cruise

by:DEFUS     2020-05-25
With the continuous development of electronic technology, electronic control is more used in the automotive field, where fixed-speed cruise is because of the limitations of fixed-speed cruise and incompatibility with the current development of automobiles. The adaptive cruise control technology was developed on the basis of cruise control. What's the difference? In order to understand the difference between them, you have to understand what is fixed-speed cruise and adaptive cruise? The difference between adaptive cruise and cruise The two have in common: adaptive cruise control and cruise control both control the signal output from the electronic throttle sensor and control the adjustment of the throttle opening size to achieve control of the vehicle speed. When the cruise control function is turned on, the cruise control module will accurately calculate the angle of the throttle opening to maintain the current cruise speed through the signal output from the electronic throttle sensor, so that the intake air amount and fuel injection amount are accurate Cooperate to reach the set cruising speed. They mainly read the pulse signal sent by the vehicle speed sensor through the cruise control component and compare it with the set speed, and issue commands through accurate electronic calculation to ensure the fuel supply at the cruise speed of the vehicle. This is their common Place. The difference between the two Cruise at fixed speed: Cruise at fixed speed only cruises at the speed set by the driver. The basic cruise speed at set speed is above 40Km / h. It is more suitable for use on highways and under good driving conditions. For the speed of 25Km / h in congested urban areas, it cannot be used for cruise. Moreover, it does not have the ability to measure the following distance, and to increase or decrease the speed and automatic braking function according to the speed of the vehicle in front. Adaptive cruise control: Adaptive cruise control has more radar sensors than cruise control. The radar or infrared beam can be used to obtain the exact position of the vehicle in front. If the vehicle in front is decelerated or a new target is detected, the system will Send an execution signal to the engine or brake system to reduce the speed of the vehicle, so that the vehicle and the preceding vehicle can maintain a certain safe distance. After the road obstacle in front is cleared, it will speed up and return to the set speed radar system, which will automatically monitor the next target. That is to say: the adaptive cruise control system not only has cruise control to maintain the speed set by the driver in advance, but also can reduce the speed at any time under specific driving conditions, and even automatically brake. When the vehicle speed exceeds 30km / h, no matter how the driver drives the vehicle, the adaptive cruise control system will intervene. The adaptive cruise system generally works only when the vehicle speed is greater than 25km / h. If the vehicle speed is lower than this, manual driving control is required. If the system software is upgraded, the adaptive cruise control system can implement parking and starting functions to cope with frequent parking and starting conditions while driving in the city. This is not available in cruise control.
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