37results about How to "Avoid sudden braking" patented technology

The control system of the present invention that can realize two-way green wave traffic on main roads, when the video tracking detection unit detects that there is a car on the branch road to pass through the intersection, it immediately judges whether the video tracking and detection unit on the main road detects that there is a car on the way. To pass through the intersection, if there is a vehicle on the main road passing through the intersection, and its position has reached the monitoring position, let the main road vehicle pass through first. The road is a green light to let the branch line vehicles pass through the intersection. After the branch line vehicles pass the intersection, they will immediately turn back to the main line and turn the green light. In this way, when there are vehicles passing on the main line road, it can ensure that the vehicles can pass through the intersection safely without slowing down. In the true sense, the main line road is two-way Green wave passes.

The invention discloses an automobile automatic braking device based on dynamic optimization. The device is formed by an obstacle distance measuring sensor, a current automobile speed measuring sensor, an automobile central control microprogrammed control unit (MCU), a brake unit and an emergency braking alarming and state displaying device. All the parts are connected through a data bus in an automobile. After a braking parameter corresponding to the automobile type is input in the central control MCU, the obstacle distance measuring sensor and the current automobile speed measuring sensor are started to measure the front obstacle distance and current automobile speed in real time. When the obstacle distance is equal to the suggested braking distance under the current automobile speed and a driver does not conduct braking action, the central control MCU acquires the optimum braking force and transmits a braking instruction to the brake unit to enable the automobile to stop before the automobile is in contact with the obstacle. By means of the automatic braking device, collision accidents caused by the fact that the driver does not conduct braking timely in a driving process are avoided, the driver can obtain more braking time for buffering, and emergency braking can be avoided.

The invention provides a motor starting control method and system of a vehicle. The method comprises the following steps: detecting whether an under-voltage fault occurs in a vehicle; if so, determining whether the battery voltage of the vehicle is normal after preset time; if so, acquiring a current rotating speed of a motor and a target rotating speed, corresponding to a current vehicle speed, of the motor, and controlling the current rotating speed of the motor by means of rotating-speed closed-loop control; determining whether current rotating speed of the motor reaches the target speed; and if so, controlling an output torque of the motor according to a torque command sent by the vehicle. With the method provided by the invention, a phenomenon of emergency stopping caused by zero-speed starting of the motor during the under-voltage protection is avoided; and thus the stability of the system and the comfort level of vehicle driving are improved.

The invention relates to a pre-warning system for preventing tailgating of a rear vehicle. The pre-warning system comprises a signal collecting mechanism, a data processing mechanism and a pre-warning executing mechanism, wherein the signal collecting mechanism, the data processing mechanism and the pre-warning executing mechanism are installed on a current vehicle. The signal collecting mechanism is used for sending detecting waves backwards and receiving the detecting waves reflected by the rear vehicle, so that relative speed and the distance between the two vehicles of the rear vehicle and the current vehicle are monitored. The data processing mechanism is connected with the signal collecting mechanism, and whether a tailgating danger exists between the rear vehicle and the current vehicle or not is judged according to a preset condition on the basis of the relative speed and the distance between the two cars fed back by the signal collecting mechanism. The pre-warning executing mechanism is connected with the data processing mechanism, and pre-warning to a driver of the rear vehicle and / or the current vehicle is executed according to the judging result fed back by the data processing mechanism. The pre-warning system for preventing tailgating of the rear vehicle is capable of reminding the rear vehicle that the distance between the two vehicles is small and a safe interval needs to be kept and reminding the driver of the current vehicle that the rear vehicle is in an unsafe distance and behaviors such as braking need to be avoided as far as possible.

The invention relates to an HST control mechanism and agricultural machinery. The HST control mechanism comprises an HST displacement adjusting part, a gear shifting mechanism, a forward end swing arm, a backward end swing arm and a driving mechanism; the driving mechanism is hinged to a rack, a power end of the driving mechanism is connected with a foot pedal accelerator through a foot pedal accelerator throttle wire, a driving end I is connected with an engine through an engine throttle wire, and a driving end II of the driving mechanism is connected with the forward end swing arm and the backward end swing arm correspondingly; the forward end swing arm and the backward end swing arm are connected to the gear shifting mechanism correspondingly and realize the switching of a forward modeand a backward mode through the gear shifting mechanism, and the gear shifting mechanism is connected with the HST displacement adjusting part. In the forward mode or the backward mode, the driving mechanism drives an engine accelerator to simultaneously drive the forward end swing arm or the backward end swing arm to swing, and then the gear shifting mechanism acting synchronously with the driving mechanism pushes the HST displacement adjusting part to increase or decrease the HST displacement.

The invention discloses an automobile automatic braking device based on orthogonal configuration optimization. The automobile automatic braking device is formed by an obstacle distance measuring sensor, a current automobile speed measuring sensor, an automobile central control microprogrammed control unit (MCU), a brake unit and an emergency braking alarming and state displaying device. After a braking parameter corresponding to the automobile type is input in the central control MCU, the obstacle distance measuring sensor and the current automobile speed measuring sensor are started to measure the front obstacle distance and current automobile speed in real time. When the obstacle distance is equal to the suggested braking distance under the current automobile speed and a driver does not conduct braking action, the central control MCU automatically executes an interior orthogonal configuration algorithm to calculate the optimum braking force and transmits a braking instruction to the brake unit according to the obtained optimum braking force to enable the automobile to stop before the automobile is in contact with the obstacle. By means of the automatic braking device, collision accidents caused by the fact that the driver does not conduct braking timely in a driving process are avoided, the driver can obtain more braking time for buffering, and emergency braking can be avoided.

An adaptive fuzzy control system and method for traffic lamp is characterized by that a traffic signal controller is used to connect the traffic throughput detector with signal indicator. A cycle of a traffic signal is divided into severalr stages. Each stage has several pass rights. The time for pass and the time for inhibition in each stage are calculated according to detected traffic throughput and the time taken by a vehicle and then provided for signal indicator.