Abstract:
PROBLEM TO BE SOLVED: To provide a vehicle information processing device enabling various inspections or saving power for ID registration, an inspection method of a wheel information processing device, and an ID registering method of the wheel information processing device. SOLUTION: The vehicle information processing device provided in a vehicle 10 comprises TPMS valves 20 including an air pressure sensor obtaining tire air pressure as wheel information and a wheel side transmitter capable of periodically transmitting the wheel information and a self ID; an ECU30 receiving the wheel information from the wheel side transmitter of each TPMS valve 20 through a vehicle body side transmitter 25 and processing that; and an on-vehicle battery 29 supplying electric power to the ECU30. The ECU30 executes predetermined inspection on the basis of a signal periodically transmitted from each vehicle side transmitter, when receiving a shift instruction to an inspection mode while electric power is supplied from the on-vehicle battery 29. The inspection mode is continued after the shift instruction until predetermined condition is satisfied. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To detect whether or not tire information is transmitted from an uninstalled tire when the tire information is transmitted from a plurality of tires including an installed tire attached to a vehicle and the uninstalled tire loaded on the vehicle without being attached to the vehicle and to perform no output to a vehicle control device when it is transmitted from the uninstalled tire. SOLUTION: When the received tire information is the one transmitted from the installed tire, air pressure information included in the tire information is outputted to the vehicle control device, however, when it is detected that the information is the one transmitted from the uninstalled tire, it is not outputted. Therefore, the vehicle control cannot be performed based on the air pressure of the uninstalled tire. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To facilitate operation of a worker when learning a wheel position after rotation of the wheel. SOLUTION: Wheel side devices 20-28 transmit wheel information when an air pressure of a tire is rapidly varied. In this case, the order for rapidly varying the air pressure of the tire is predetermined. Accordingly, in a vehicle body side device 30, the wheel information is expected to be received in the order decided corresponding to the rules. In the vehicle body side device 30, the position of the wheel provided with the wheel side device to which the wheel information is transmitted can be obtained based on the receiving state of the wheel information and the rules. The worker may vary the air pressure of the tire in the order decided by the rules and it is not needed to repeat input work of the wheel position and rapid varying work of the air pressure of the tire alternately. The work can be facilitated by that degree. Further, input of the wheel position can be more certainly performed. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To make a content of execution of a program by a computer in a detection device appropriate in a system for detecting the state quantity of the tire in a vehicle by providing a detection device on a wheel and providing a processing device on a vehicle body. SOLUTION: The processing device 12 is provided with (a) information obtaining devices 82, 90, 92, 94 for obtaining the information related to at least one of motion of the vehicle, a traveling environment of the vehicle, the condition of the tire, the specification of the vehicle and the transmitting and receiving state of an electro-magnetic wave; (b) a transmitting/receiving unit 78 for transmitting a required signal toward the detection device 10 and receiving a signal from the detection device 10; and (c) a computer 70 for transmitting a signal affecting to the content of execution of the program by the computer in the detection device 10 to the detection device 10 based on the information obtained by the information obtaining devices 82, 90, 92, 94. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PURPOSE:To pertinently estimate the maximum coefficient of friction of a vehicle traveling road surface without being influenced by the condition of driving the vehicle. CONSTITUTION:The slip rate and coefficient of friction of a wheel WL against a vehicle traveling road surface are respectively detected by a slip rate detection means SR and a coefficient of friction detection means CF. Based on those results of detection, the ratio of the coefficient of friction to the slip rate is calculated by a coefficient of friction/slip rate calculation means MC. The specific characteristics between the coefficient of friction and the slip rate are pre-memorized in a coefficient of friction.slip rate characteristic memory means MS. Comparison is made by a comparison means CP between the calculation results of the coefficient of friction/slip rate calculation means MC and the specific characteristic memorized by the memory means MS and the maximum coefficient of friction is estimated by a maximum coefficient of friction estimation means ME is accordance with the comparison results. The estimated results of the maximum coefficient of friction estimation means ME are corrected and output by a correction means SA in accordance with the vehicle driving condition.
Abstract:
PURPOSE:To improve the safety by preventing an automobile from approaching the edge of the road in deciding a steering angle utilizing a reflection marker on the road edge. CONSTITUTION:An imaginary marker is decided at a position inside the detected marker by D, and a steering angle is decided so as to approach the nearest imaginary marker. When the distance from the imaginary marker becomes smaller than a preview radius Rp, steering control is switched to the next imaginary marker. The distance D is adjusted by means of an offset setting device. According to the number of the markers detected, the contents of control is switched.
Abstract:
PURPOSE:To prevent wrong control and unstability due to misdetection data by detecting whether or not distance detection is proper according to a detected distance variation quantity and a position shift quantity and detecting whether or not azimuth detection is proper according to a detected azimuth variation quantity and a traveling direction variation quantity. CONSTITUTION:A vehicle speed sensor 5 detects the traveling speed and a steering angle sensor 7 detects the steering angle; and the position shift quantity and traveling direction variation quantity are calculated from them. A distance detecting means 27 which uses a laser radar 2 detects the distance between the vehicle and a body and an azimuth angle detecting means 26 detects the azimuth of the body which is viewed from the vehicle. Then a monitor means 31 calculates the detected distance variation quantity and detected azimuth variation quantity. Then whether or not the distance detection is proper is detected according to the detected distance variation quantity and position shift quantity and whether or not the azimuth detection is proper is detected according to the detected azimuth variation quantity and traveling direction variation quantity. Consequently, the wrong control and unstability due to the misdetection data are prevented.
Abstract:
PURPOSE:To prevent a steering wheel from turning undeliberately by transmitting the motion of a steering input means to wheels through a steering member to enable manual steering, and restraining during auto-steering mode the motion of the steering input means and steering member with a restraining means. CONSTITUTION:When a three-position selective solenoid valve 13 is set to the first state, the pressure oil from a pump 11 is supplied to the right chamber of a cylinder 132 to cause a piston 134 to move left. Therein the relative position relationship between a rack, not illustrated, and a lateral power shaft 82 in compliance with the position of the piston 134 is sensed by a position sensor 150, and the sensing signal is fed to an ECU. The ECU is also fed also with sensing signals from a TV camera 21, image processing/line sensing unit 22, and car speed sensor 23. The ECU controls the three-position selective solenoid valve 13 on the basis of the fed signals. At the time of automatic steering, an electromagnetic clutch 25 is controlled, and rotation of the steering wheel is restrained.
Abstract:
PURPOSE:To perform the zero point correction of a steering angle even during the stop or low-speed travel of a vehicle by performing the zero point correction of a steering wheel steering angle detected by a steering angle sensor using assisting pressure supplied to a power cylinder in a power steering. CONSTITUTION:In a vehicle provided with a power steering 1. an oil pressure sensor 3 is provided in the power steering 1 so as to detect the assisting pressure supplied to a power cylinder la in the power steering 1. When the assisting pressure detected by the oil pressure sensor 3 is the lowest, the steering wheel steering angle detected by a steering angle sensor 2 is set as the zero point correction value by a zero point correction value setting means 4, and the zero point correcting operation based on the zero point correction value set to the steering wheel steering angle detected by the steering angle sensor 2 is performed by a correcting arithmetic means 5. The zero point correction of the steering wheel steering angle can be thereby performed accurately even during the stop or low-speed travel of the vehicle.
Abstract:
PURPOSE:To steering-control rear wheels in stable manners with the superior responsiveness by detecting the disorder of a step motor by judging if the difference between an aimed rear wheel steering angle and an actual rear wheel steering angle is within a prescribed range or not. CONSTITUTION:A judging means 7 judges if the difference between an aimed rear wheel steering angle determined by an aim rear wheel steering angle determining means 3 and the actual steering angle for rear wheels which is detected by a rear wheel steering angle detecting means 5 is within a prescribed range or not. When the disorder of a step motor 1a does not generate, and the above- described difference is judged to be within a prescribed range, a revolution control means 8 controls the revolution of the step motor 1a by the revolution control quantity which is determined by the first revolution control determining means 4, and rear wheels RW are steering-controlled to an aimed rear wheel steering angle (open control system). When a disorder of the motor 1a is generated and the above-described difference is judged to be not within a prescribed range, the revolution control means 8 controls the revolution of the motor 1a by the revolution control quantity determined by the second revolution control quantity determining means 6 (feedback control).