4131 results about "Parking brake" patented technology

Systems and methods for switching between autonomous and manual operation of a vehicle are described. In one embodiment, there is a mechanical control system that receives manual inputs from a mechanical operation member to operate the vehicle in manual mode. There is further an actuator that receives autonomous control signals generated by a controller. When the actuator is engaged, it operates the vehicle in an autonomous mode, and when disengaged, it operates the vehicle in manual mode. In another embodiment, there is an E-Stop system to disengage systems that cause the vehicle to move, such as the engine, while still leaving power in the systems that do not cause the vehicle to move. There is a method for autonomous mode starting of a vehicle, comprising receiving a signal indicating autonomous mode, determining that a parking brake lever is set and the brakes are engaged, disengaging the brakes while maintaining the lever in the set position, and engaging in autonomous mode. There is a safety system with a mechanical bias to suppress moveable systems of the vehicle, comprising a clutch that releases the mechanical bias to permit movement of the moveable system when the clutch is engaged. In another embodiment a system comprises a mechanical linkage with a restoration member that permits control of an operation system of the vehicle by a remote operation member when the restoration member is engaged. There is also an actuator that prohibits control of the operation system by the remote operation member when the actuator is engaged.

A fluid-pressure brake system for a vehicle having a parking brake function in which, in response to actuation of an electrical parking brake signal transmitter, and without actuation of a brake pedal, at least one wheel brake of the brake system is actuated via an actuator to which the fluid is admitted. A parking brake module is provided in which there is integrated an electronic control unit as well as valve devices that are electrically actuatable by the electronic control unit. The electronic control unit actuates the parking brake function upon receiving from the parking brake signal transmitter an electrical actuating signal demanding actuation of the parking brake function and, as part of the parking brake function, the electronic control unit controls the admission of fluid to the actuator by means of the electrically actuatable valve devices.

A valet parking system for automatically bringing a vehicle to a parking space within a predefined parking area. The valet parking system includes a central control unit and a parking-space monitoring system having a stationary parking-space sensor. The parking-space monitoring system is designed to detect the current state of occupancy of the parking spaces of the parking area and to transmit that to the central control unit. The parking-space monitoring system may localize all autonomously moving or waiting vehicles that are currently in transit autonomously within the parking area either to be brought to their assigned parking space or received by their driver at a predefined pick-up location, and to transmit information about the present position of all these vehicles to the central control unit. A free parking space is assigned to the vehicle by the central control unit as a function of the geometrical dimensions of the vehicle.

A hybrid vehicle includes an internal combustion engine coupled to a combined starter/motor/generator which is, in turn, coupled to a transmission of the vehicle. The starter/motor/generator is coupled to a high voltage battery pack via an inverter and to a deployable power output panel for serving loads external to the vehicle. Whenever external loads are to be powered, a control unit automatically places the vehicle in PARK, or alternatively activates an electrical parking brake system to hold the vehicle stationary.

A rotary shaft (3) and a rotation driven member (4) are so connected as to be capable of transmitting motive power when the rotary shaft (3) rotates relatively to the rotation driven member (4). A roller (6) gets displaced to a first position where a frictional force with an outer race (5) and the rotation driven member (4) decreases, thereby permitting transmission of a rotational force from the rotary shaft (3) to the rotation driven member (4). When the rotation driven member (4) rotates relatively to the rotary shaft (3), the roller (6) gets displaced to a second position where the frictional force with the outer race (5) and the rotation driven member (4) increases, thereby rotationally fixing the rotation driven member (4) with respect to the outer race (5). The power transmission from a brake apparatus (e.g., a parking brake apparatus) to an electric motor (2) can be hindered while permitting the power transmission to the brake apparatus from the electric motor (2) by using neither a worm exhibiting a relatively low transmission efficiency nor a worm wheel. In a state where the brake apparatus exhibits its braking force, the roller (6) receives the force from the brake apparatus and is thereby biased toward the second position, whereby a construction of a power transmission mechanism (50) can be simplified and costs can be reduced to such an extent.

A well servicing system includes a computer-based system that monitors pumping or other service operations at a well site and monitors deliveries and withdrawals of chemicals at a bulk storage station. A GPS device or other location identifier provides a location value that identifies the location of the service vehicle. A GPS reading is triggered by actuation of the vehicle's parking brake, and the location value is recorded in association with a process-related transducer value. The transducer value is based on the service vehicle performing some type of service operation either at the well site or at the bulk storage station.

The field of the present invention is parking meters and more particularly to the use of electronically operated parking meters coupled with a sensor for positively sensing unobtrusively the presence or absence of a vehicle in a specified parking space controlled by the sensor and electronically operated parking meter. An induction coil mounted below the surface of the parking area is used to provide positive signals to the electronically operated parking meter and a cpu upon both the entrance of a vehicle into the parking space and the movement of the vehicle from the parking space. Moreover, the detecting system is battery operated and the battery life is extended by duty cycle operation of the detector system, whereby only a small portion of a detecting cycle is actually employed for detecting the status of the parking space.

The invention discloses an intelligent parking braking and auxiliary starting control method, which includes steps of firstly, initializing an intelligent parking braking controller and reading control parameters stored in a single-chip microcomputer, secondly, reading a vehicular speed signal V, a brake pedal travelling signal Db, an accelerator pedal travelling signal Da, a transmission gear signal Js, an ignition key door switch signal Key, an enable switch signal Button, a front wheel speed signal wf, a rear wheel speed signal wr and a gradient signal Sa, thirdly, invoking and performing an intelligent parking control procedure, an auxiliary starting control procedure, a parking brake automatic retracting control procedure, a long-term parking control procedure, an emergency braking control procedure or manual reset cutting-off control procedure according to the read signals and fulfilled response conditions, fourthly, converting the target torque of a motor according to the motor target braking force calculated from the control procedures, fifthly, calculating the target rotor current of the motor according to the obtained target torque of the motor, and sixthly, controlling the duty ratio of a motor PWM (pulse width modulation) driving control circuit according to the target rotor current of the motor.

An electromechanical parking brake system for a heavy vehicle braked by air-actuated service brakes includes an EPB-ECU and a first electromechanical parking brake actuator controlled by the EPB-ECU. The electromechanical parking brake system further includes a redundant sub-system for applying a second parking brake in an event of a failure in the EPB-ECU or the first electromechanical parking brake actuator.

A combined vehicle brake including a hydraulically actuated service brake and an electromechanically actuated parking brake device, a hydraulic operating pressure chamber in a brake housing being defined by a brake piston, which for performing service braking actions can be acted upon by hydraulic pressure fluid, so that the brake piston can be actuated along a piston longitudinal axis in order to produce a braking action, and the parking brake device acting on the brake piston by way of a transmission that translates the rotary motion of an electromechanical actuator into a translational motion and actuates the brake piston to perform parking brake actions and to keep it in the actuated position. Also disclosed is a transmission for translating a rotary motion into a translational motion by way of a screw spindle and a spindle nut, which are in contact with one another by way of multiple rolling elements.

An electro-pneumatic brake control device is provided for controlling a parking brake of a vehicle having a service brake and a parking brake, the service brake having a brake pedal and pneumatically actuatable brake cylinders operatively connected to the brake pedal for actuating wheel brakes. At least one brake cylinder is a spring brake cylinder with a spring store part for actuating the parking brake. In the event of a failure of the electrical energy supply, the spring store part of the spring brake cylinder is permanently vented by actuating the brake pedal in order to activate the parking brake.

The present invention provides a shared bicycle scheduling method and system. The method comprises a step 1, a server end defines a non-parking area, and a remaining area is a non-prohibited parking area; a step 2, the server end synchronously displays the illegal parking bicycle and the non-illegal parking bicycle to the client, and the special position is displayed at the position of the illegal parking bicycle; and a step 3, the server end continuously scans and receives the unlock request signal and the end-and-lock notification of the same bicycle, and in response to the user action, users are divided into the scheduling user, the normal riding user and the illegal parking user. The present invention proposes the shared bicycle scheduling method and system, which uses partition of the non-parking area and the award and incentive modes to guide the user to spontaneously ride out the illegal parking bicycle from the non-parking area and park the bicycle in the non-prohibited parking area, so that the scheduling management cost of the shared bicycle operator is reduced, the utilization rate of the shared bicycle is increased, the scheduling user enjoys the riding discount and the cost of riding is reduced.

A procedure for actuating a parking brake is described, the parking brake comprising a brake piston which is received in a hydraulic chamber and is displaceable within the hydraulic chamber by means of a hydraulic actuator on the one hand and a mechanical actuator on the other. During operation of the parking brake the mechanical actuator is activated in a first step in order to displace the brake piston in the hydraulic chamber in such a way that a volume of a hydraulic fluid contained in the hydraulic chamber is increased. At a subsequent time the hydraulic actuator is activated in order to build up or increase a clamping force of the parking brake. The hydraulically generated or increased clamping force is then maintained by means of the mechanical actuator.

Disclosed herein is an electronic parking brake which is installed in a vehicle and is operated by a motor. The electronic parking brake having a drum rotating together with a wheel and first and second brake shoes includes a motor rotated in normal and reverse directions and generating driving force for braking, a cycloid reducer connected to a rotary shaft of the motor and amplifying the driving force generated from the motor, a spindle member connected to the cycloid reducer and rotated, a spur gear assembly rotated by rotary force transmitted from the spindle member, a piston rotated and provided with the outer circumferential surface on which one gear of the spur gear assembly is integrally formed, and a push rod unit installed at both ends of the piston in the longitudinal direction, rectilinearly moved according to rotation of the piston and supported by the first and second brake shoes.

A parking brake having an actuator, wherein the actuator is driven with a direct current motor which can be operated in two directions and which moves a piston of the actuator and, via a self-locking gear mechanism of the actuator, at least one brake shoe for applying or releasing the parking brake. A control unit for performing open-loop or closed-loop control of the movement of the direct current motor is also provided. During open-loop or closed-loop control of the movement of the direct current motor for applying and/or releasing the parking brake, the control unit takes into account a hydraulic admission pressure which is currently present at the piston if the brake is applied or was present at the piston if the brake has been released when it had previously been applied. A corresponding method for operating such a parking brake is also disclosed.

A calculator is provided to assist a vehicle operator with the task of filling out and maintaining their log books. The calculator includes an input device that may receive a signal in accordance with the setting and release of the parking brake. The input device may also be a physical button pressed by the vehicle operator. A clock may be built into the device to provide current time and date. The input device provides a time stamp that may be altered or varied as directed by the user. A filter may be used to select and remove specific display data, such as an activity with a duration of less than a predetermined time which may be 7.5 minutes. A rounding algorithm may be used to generate rounded times in which the time stamp data may be rounded to the closest fifteen minute increment. These rounded times may be stored in a register to be recalled and arithmetically analyzed to assist the user in filling out and keeping the log books up to date.

An object of the present invention is to provide an electric disk brake capable of determining an abnormality of a parking brake mechanism while the parking brake mechanism is in operation. A brake force is generated in the following manner. A rotation of an electric motor is slowed down by a differential speed reducing mechanism, and is converted into a linear motion by a ball ramp mechanism so as to advance a piston, which then presses a brake pad against a disk rotor to generate a brake force. A parking brake mechanism can lock a rotation of a rotor of the electric motor and maintain a braked state by rotating an engagement pawl through a plunger of a solenoid and causing the engagement pawl to be engaged with a ratchet wheel coupled to the rotor of the electric motor. A play is provided at a coupling portion of the engagement pawl and the plunger. The play enables the plunger to move within the range of the play while the engagement pawl is engaged with the ratchet wheel, thereby enabling determination whether the parking brake mechanism operates normally or abnormally based on whether the plunger moves or not upon application of an electric current to the solenoid while the parking brake mechanism is in an actuated state.

The invention relates to a subassembly for a brake actuator which is provided for an electromechanically operated parking brake. The subassembly comprises a drive device and gear device for generating and transmitting a torque to a brake device and a fixing element which secures the arrangement of the gear device relative to the drive device, an internal-toothed wheel of the gear device being integrated in the fixing element.

A system and procedures for adjusting a parking brake for an aircraft having an electric brake system are disclosed. Adjustment of a parking brake as described herein can compensate for thermal expansion or contraction of components of a parking brake mechanism, generally seen during and subsequent to an aircraft landing. Procedures for adjusting an aircraft parking brake as disclosed herein include setting the aircraft brakes to an initial state, comparing a measured elapsed time to a threshold time, measuring a brake temperature, adjusting the brakes to achieve a desired clamping force or brake actuator position, and engaging a friction brake in order to conserve power needed by an electric brake actuator.

The invention relates to a brake apparatus with an electric service motor, which serves to actuate the brake via an actuating device. To enable setting an air clearance, the apparatus includes a readjuster for setting the air clearance, the brake is actuated with the readjuster and then reversed by a defined length. To realize a parking braking function, the apparatus includes a parking brake that can be repositioned from a released position to a braking position and that acts on the actuating device.

The invention provides a parking track correcting method. Usually in a parking guide stage, control errors exist due to various factors such as a control system and an execution mechanism in the vehicle travel process, and inevitably, an actual travel route travelled by a vehicle controlled by the system deviates from a parking track set by the system. By the adoption of the parking track correcting method, the actual travel route of the vehicle and the parking track set by the system in advance are compared in real time to obtain the difference, when the difference is large, the parking track of the vehicle is planned again according to the actual position of the vehicle, the condition of surround obstacles and the position of a parking place, and therefore the parking process of the vehicle can be finished without collisions according to the new parking track.