Abstract:
The different illustrative embodiments provide an apparatus that includes an autonomous vehicle, a modular navigation system, and an asymmetric vision module. The modular navigation system is coupled to the autonomous vehicle. The asymmetric vision module is configured to interact with the modular navigation system.
Abstract:
A self propelled robotic vehicle that faithfully follows a portable receiver at a defined distance can sense an impending collision with a solid object in its path and stops prior to collision. The vehicle observes objects that are parallel to its course and if within a distance of
Abstract:
Autonomous control of steering, speed, forward and reverse movement of a motor vehicle is provided by transmitting a signal from a transmitter carried by an ambulatory user, receiving the signal with three signal-receiving antennae on the motor vehicle, generating first, second and third sub-signals with a three-channel receiver connected to the three antennae, generating sum and difference outputs with the first and second sub-signals, affecting the steering with the difference output, affecting the speed, forward and reverse control with the sum output, generating a distance-to-user output from the third sub-signal, and limiting the proximity of the motor vehicle to the user with the distance-to-user output.
Abstract:
A system is disclosed for determining precise locations of the golf carts on a golf course in real time as the carts are in use during play of the course. Each cart is outfitted with a dead reckoning navigation (DRN) system for determining speed and direction, and a compass for determining heading of the cart during play. With these parameters and a known origin of the cart to which the DRN system has been calibrated, such as location of a tee box, the location of the cart relative to a known feature of the course such as a cup or hazard may be calculated. The DRN system uses a magnetic wheel sensor assembly having a magnetic strip with spaced alternating opposite magnetic poles affixed to the rim of an inside wheel well or mounting fixture therefor of the cart, mounted to confront a Hall effect sensor. During rotation of the wheel and the strip when the cart is moving, the sensor detects passage of the alternating poles, to measure speed and forward or backward direction of the cart. A compass determines heading of the cart. The DRN system allows operation on courses where GPS-based systems cannot maintain LOS, and is periodically calibrated by a known signal, such as a DGPS signal.
Abstract:
An autonomous personal service robotic apparatus, such as a robotic golf caddy, including a drive assembly for movement of the robotic caddy, a digital computer having memory devices in which are stored a digital map and navigation rules, and having a operations program for the control of performance of personal services, including movement and navigation of the caddy in the environment, and a position determination assembly for determining the position of the robotic device in the environment. The position determination assembly also dynamically determines the position of unmapped elements in the environment and super imposes or overlays them with the mapped elements and position of the robotic apparatus. Position preferably is determined by differential GPS techniques. The navigational rules for the robotic device control its movement in the environment in response to its sensed position in the mapped environment, the sensed unmapped elements and preferably the sensed relative position of the user. A method of providing an autonomous, personal services robot which is well suited to provide a robotic golf caddy.
Abstract:
A system and method are provided for controlling the movement of a golf cart relative to a selected restricted area on a golf course, such as a green. A signal transmitter having a transmitting antenna is postioned in the vicinity of the selected restricted area. A transmission signal is produced from the transmitting antenna at the selected restricted area. A signal receiver having a receiving antenna is positioned on the golf cart for receiving the transmission signal when the golf cart moves into the vicinity of the transmitting antenna. An alarm on the golf cart is activated when the transmission signal received by the receiving antenna reaches a predetetermined level for indicating to an operator of the golf cart that the cart has moved into the restricted area on the golf course. The activation period of the first alarm is timed so that a second alarm on the golf cart can be activated after the expiration of a predetermined time period of activation of the first alarm. The second alarm provides notice to the cart operator that the cart has remained in the restricted area for the predetermined time period. The golf cart may also be disabled in the forward direction after a predetermined time period of activation of the first alarm to prevent further ingress of the cart into the restricted area.
Abstract:
A radio controlled guidance and speed control system for a vehicle has spaced receivers for receiving magnetic energy signals from a movable energy source. The signals received vary in accordance with the position of the receivers with respect to the energy source, and are electrically processed to control separate motors driving two wheels of the vehicle for starting, stopping and direction controlling. The circuit for processing the received signals comprises a summing amplifier for speed control, two differential amplifiers for direction control and a gate connected to the summing amplifier through a comparator to provide a stop signal. The circuit provides for a gradual acceleration of the motors. One of the receivers is connected to the gate for developing a stop signal to prevent utilization of ambiguous signals from the other signal receivers.
Abstract:
PCT No. PCT/DE95/01211 Sec. 371 Date Mar. 19, 1997 Sec. 102(e) Date Mar. 19, 1997 PCT Filed Sep. 6, 1995 PCT Pub. No. WO96/09575 PCT Pub. Date Mar. 28, 1996A golf cart or caddy and a mobile transmitting device carried by a golf player are each provided with a receiving and evaluating device equipped with a computer for a satellite-controlled positioning system. The two receiving and evaluating devices calculate the respective positions of the golf player and the golf caddy from the signals cyclically received from the satellite system. The mobile transmitting device is provided with a high-frequency manual transmitter which transmits, also cyclically, the positions of the golf player to the golf caddy. The computer of the golf caddy calculates direction and distance of the golf player and stores the data up to the time when the caddy follows the stored path upon a signal. The golf caddy stops at a predetermined distance from the golf player. When a stationary reference transmitter is additionally used for correcting the position data of the golf player and the golf caddy received from the satellite system, specific areas of the golf course can be excluded as forbidden areas, so that these will not be traveled by the golf caddy.
Abstract:
A vehicle is comprised of a machine controller, a steering system, a propulsion system, a braking system, a sensor system, and a knowledge base used by the machine controller. The machine controller identifies a dynamic condition and sends commands to the steering system, the propulsion system, and the braking system to move the vehicle.
Abstract:
A target-following vehicle (1) comprises: a frame (2) carrying wheels (3), the frame having a front side and a rear side; driving means (121; 122; 123) for driving the wheels; control means (110) for controlling the driving means; a remote target unit (200) associated with the vehicle; stereoscopic location detection means (150) for detecting the relative location of the remote target unit (200) with respect to the vehicle. The control means control the driving means such that the front side of the frame is directed to the remote target unit, and such that the distance between vehicle and remote target unit is reduced if that distance is more than a predetermined desired distance.