Speed control device
AssigneeMitsubishi Electric Corporation
InventorMakoto TOKUMARU
Life of this patent
Estimating the term…
Abstract
A speed control device includes: a first calculation unit to calculate first location information and first speed information from output of a speed generator; a second calculation unit to calculate second location information and second speed information from output of a speed sensor; a route database storage unit to store information to select one of a calculation result of the first calculation unit and a calculation result of the second calculation unit in accordance with a location of a vehicle; and a selection unit to select one of the calculation results on the basis of the information of the route database storage unit to output the information as location information and speed information, in which speed of the vehicle is determined on the basis of the location information and speed information.
Claims3
A speed control device mounted on a vehicle that includes a speed generator to generate and output a pulse according to a number of rotations of a wheel, and a speed sensor to detect speed using reflection of an electromagnetic wave without using rotation of the wheel and output an amount of detection, the speed control device comprising:
- a processor to execute a program;
- and
- a memory to store a route database and the program which, when executed by the processor, performs processes of,
- receiving an input of a pulse signal that is based on an output of the speed generator, and calculating and outputting first location information and first speed information of the vehicle;
- receiving an input of a detection signal that is based on an output of the speed sensor, calculating and outputting second location information and second speed information of the vehicle;
- receiving inputs of the first location information, the second location information, the first speed information, and the second speed information, selecting any location information and speed information on a basis of information of a route database, the information being for selecting any of the first location information, the second location information, the first speed information, and the second speed information, in accordance with a location of the vehicle, and to outputting location information and speed information that are selected;
- a pickup coil to receive information from a ground coil, and wherein
- the selecting further includes determining an absolute location of the vehicle using the information from the ground coil that the pickup coil received, and determining speed of the vehicle on a basis of the location information and speed information that are selected.
Dependencies are inferred from the claim text.