公开(公告)号：JP2003170821A

公开(公告)日：2003-06-17

申请号：JP2001371520

申请日：2001-12-05

Applicant: TOYOTA MOTOR CORP

Inventor： SHOBU MASAYA

IPC: B60T8/171 ,  B60T8/00 ,  B60T8/172 ,  B60T8/1764 ,  B60T8/88

Abstract: PROBLEM TO BE SOLVED: To decide abnormality of wheel velocity detected by sensors until actual velocity of a vehicle becomes high partway after a start, in a vehicle velocity abnormality decision device. SOLUTION: Each wheel of the vehicle is provided with the wheel velocity sensor outputting an electric signal according to the wheel velocity. When the secondarily-low wheel velocity VWMEDL changes from a prescribed value V1 to V2 under conditions that a minimum wheel velocity VWMIN of the wheel velocity of each the wheel detected by the wheel sensor is nearly zero, the abnormality occurs in the minimum wheel velocity VWMIN. That is, it is decided that the abnormality occurs in the wheel velocity sensor outputting the signal according to the minimum wheel velocity VWMIN. COPYRIGHT: (C)2003,JPO

公开(公告)号：JPH10181567A

公开(公告)日：1998-07-07

申请号：JP35872096

申请日：1996-12-26

Applicant: TOYOTA MOTOR CORP

Inventor： SHIRAI KOJI ,  TAKASU RYUJI ,  SHOBU MASAYA

IPC: B60T8/88

Abstract: PROBLEM TO BE SOLVED: To improve reliability of a brake system by inhibiting increase/ decrease control of brake fluid pressure from the time of an engine start switch being switched into an ON state until the time of a brake switch being switched into an ON state first. SOLUTION: Whether an ignition switch is in an ON state is discriminated (S100). Upon discriminating the ON state of the ignition switch, an alarm lamp is lighted (S102). Whether a brake switch is in an ON state is then discriminated (S110). In case of discriminating the OFF state of the brake switch, this processing is repeated to wait for the ON state of the brake switch. Upon detecting the ON state of the brake switch, on the other hand, the alarm lamp is put out (S112). While the alarm lamp is lighted, ABS control processing is not executed and put in a forbidden state.

公开(公告)号：JPH10287229A

公开(公告)日：1998-10-27

申请号：JP9763897

申请日：1997-04-15

Applicant: TOYOTA MOTOR CORP

Inventor： MURAMATSU MOTOYASU ,  SHOBU MASAYA ,  MEGURO KAZUHISA ,  KOSUGI MASAHIDE

IPC: B60T17/22

Abstract: PROBLEM TO BE SOLVED: To prevent an operating sound caused by an initial check from giving a feeling of physical disorder to a driver, in an initial check method inspecting whether an on-vehicle system is normally operated or not. SOLUTION: After an IG switch of a vehicle is placed in an on-condition, an actuator is operated to decide whether a system is normal or not (100). Whether a shift lever is operated or not from a range N or a range P to the other range is discriminated (102). A BA initial check is executed, which is accompanied with operation of the actuator synchronized with the timing operating the shift lever from a range N or a range P to the other range (108).

公开(公告)号：JPH08332940A

公开(公告)日：1996-12-17

申请号：JP10423095

申请日：1995-04-27

Applicant: TOYOTA MOTOR CORP

Inventor： SHOBU MASAYA

IPC: B60T8/58 ,  B60T8/172 ,  B60T8/70

Abstract: PURPOSE: To avoid mis-determination of gear engagement as a bad road to prevent execution of improper anti-skid control. CONSTITUTION: In the case of two-wheel driving, gear engagement is determined as detected when a rotation speed increase/decrease frequency of a drive wheel is larger than that of a driven wheel by a set frequency difference or more (S305, 306). In the case of four-wheel driving, gear engagement is determined as detected when an estimated car body speed is less than a set car body speed (S308), and in the case where a road surface friction coefficient is determined to be low because of a small car body deceleration during anti-skid control (S309, 310). In a normal condition where gear engagement is not detected, in the case where wheel rotation speed increase/decrease frequency is large, it is detected as a bad road, and control conditions of anti-skid control are changed to control brake cylinder pressure to be higher than that on a good road, while if gear engagement is determined as detected, the control conditions are not changed.

公开(公告)号：JPH08276842A

公开(公告)日：1996-10-22

申请号：JP7699995

申请日：1995-04-03

Applicant: TOYOTA MOTOR CORP

Inventor： SHOBU MASAYA

IPC: B60T8/58 ,  B60T8/172 ,  B60T8/1763

Abstract: PURPOSE: To complete control when an anti-lock control is not necessary and re-start it when it is necessary by including a pressure reduction start condition change means which resets pressure reduction start conditions to first pressure reduction start conditions for each completion of anti-lock controls. CONSTITUTION: An increased pressure condition of a brake in a left rear wheel RL is achieved by setting solenoid switching valves 22 and 60 to non-energizing condition, a holding condition is achieved by setting only the solenoid switching valve 22 to energizing condition, and a decreased pressure condition is achieved by setting both the solenoid stop switching 22 and 60 to energizing condition. After the second and subsequent anti-lock control, if a time passed after the previous anti-lock control is completed is below a preset time, anti-lock control is started with a relatively small slip amount, and traveling stability on a low μroad is increased. On the other hand, if a time passed after the previous anti-lock control is completed exceeds a preset time, start of the anti-lock control is delayed until a relatively large slip amount is reached.

公开(公告)号：JP2013207600A

公开(公告)日：2013-10-07

申请号：JP2012075122

申请日：2012-03-28

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： SHOBU MASAYA

IPC: H04L1/00

Abstract: PROBLEM TO BE SOLVED: To improve security of communication.SOLUTION: A first communication node includes a first error detection code operation unit for calculating a first error detection code, based on data to be transmitted to a second communication node and a counter value representing transmission order of the data, using the counter value as a seed, and a transmission control unit for controlling transmission of a data frame, which includes the first error detection code and the data, to the second communication node. The second communication node includes a communication module for receiving a data frame from the first communication node, a second error detection code operation unit for calculating a second error detection code based on data in the data frame and a counter value representing receiving order of the data, using the counter value as a seed, an error detection unit for determining whether the second error detection code matches a first error detection code in the data frame or not, and a signal processing unit for performing a process according to the data in the data frame, based on the determination result of the error detection unit.

Abstract translation: 要解决的问题：提高通信的安全性。解决方案：第一通信节点包括第一错误检测码操作单元，用于基于要发送到第二通信节点的数据和表示传输的计数器值来计算第一错误检测码 使用计数器值作为种子的数据的顺序，以及用于将包括第一错误检测码和数据的数据帧的发送控制到第二通信节点的发送控制单元。 第二通信节点包括用于从第一通信节点接收数据帧的通信模块，用于基于数据帧中的数据计算第二错误检测码的第二错误检测码操作单元和表示数据的接收顺序的计数器值 使用计数器值作为种子，判定第二错误检测码是否与数据帧中的第一错误检测码相匹配的错误检测单元，以及用于根据数据中的数据执行处理的信号处理单元 基于错误检测单元的确定结果。

公开(公告)号：JP2013171467A

公开(公告)日：2013-09-02

申请号：JP2012035561

申请日：2012-02-21

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： SHOBU MASAYA

IPC: G06F12/16

Abstract: PROBLEM TO BE SOLVED: To provide an information processing device in which in a microcomputer containing therein a plurality of applications, an application can detect change of data.SOLUTION: An information processing device 100 includes: application storing means 12 in which a plurality of applications are stored; and a memory 14 to/from which the plurality of applications commonly reads/writes data. The information processing device 100 also includes: application identification information storage means 24 in which application identification information unique to each application is written; writing means 23 which writes, when the application writes data into the memory, data and the application identification information unique to the application in the memory; and reading means 22 which reads, when the application reads data out of the memory, data and application identification information out of the memory, and discards, when the application identification information does not coincides with application identification information of itself, the data thus read out.

Abstract translation: 要解决的问题：提供一种信息处理装置，其中在其中包含多个应用的​​微型计算机中，应用可以检测数据的改变。解决方案：信息处理设备100包括：应用存储装置12，其中多个应用 存储; 以及多个应用程序共同读取/写入数据的存储器14。 信息处理装置100还包括：应用程序识别信息存储装置24，其中写入每个应用程序唯一的应用程序标识信息; 写入装置23，当应用程序将数据写入存储器时，写入数据以及应用程序在存储器中唯一的应用程序标识信息; 以及读取装置22，当应用程序从存储器读取数据时，数据和应用程序识别信息从存储器中读出，并且当应用程序识别信息与其自身的应用程序标识信息不一致时，读取装置22将读出数据 。

公开(公告)号：JPH10329690A

公开(公告)日：1998-12-15

申请号：JP14039997

申请日：1997-05-29

Applicant: TOYOTA MOTOR CORP

Inventor： SHOBU MASAYA

IPC: B60T8/58 ,  B60T8/1761

Abstract: PROBLEM TO BE SOLVED: To forcedly terminate an ABS control resulted from a level in difference under an optimum condition according to the using environment of a vehicle in an antilock brake device for preventing an excessive slip ratio from being generated in a wheel. SOLUTION: This device executes an ABS control when an excessive slip ratio is generated in a wheel. When a prescribed step difference condition is established, it is judged that the wheel passed a step. When it is judged that the wheel passed the step after the ABS control is started, wheel cylinder pressure PW/C is increased in a prescribed pressure increasing pattern to forcedly terminate the ABS control. By use of the established frequency CABS of executing condition of ABS control and the established frequency CSTEP of step difference condition, the step difference frequency NSTEP=CSTEP/CABS is determined (steps 144-156). On the basis of NSTEP, the step difference condition and the pressure increasing pattern are changed (steps 158-164).

公开(公告)号：JPH05294226A

公开(公告)日：1993-11-09

申请号：JP10438192

申请日：1992-04-23

Applicant: NIPPON DENSO CO ,  TOYOTA MOTOR CORP

Inventor： YAMADA SHINICHI ,  MAKINO NOBUHIKO ,  INOUE YASUKO ,  SHOBU MASAYA ,  HAMADA CHIAKI

IPC: B60T8/70 ,  B60T8/172 ,  B60T8/58

Abstract: PURPOSE:To eliminate the follow-up delay of deceleration at the time of ground ing getting over the stepped road surface by suppressing the reduction of brak ing liquid pressure at the wheel lock tendency time by a control means upon judging the sudden reaction change of the road surface, and accelerating the boosting of braking liquid pressure at the wheel lock tendency released time. CONSTITUTION:The wheel speed VW and wheel acceleration dVW are compared with the reference speed VA and reference acceleration G1 so as to judge the lock tendency of a wheel. When the lock tendency is large, it is judged to be the anti-skid control timing, and the road surface state is judged to perform braking liquid pressure control judgment. When the wheel has the lock tendency, the wheel speed VW is compared with the set speed VSL. In the case of being judged to be negative, the wheel speed is reset during short-time pressure reduction, so that the wheel is judged to be shifted into the grounded state from the floating state, and pressure reduction is stopped to perform hold output, taking account of the further reset of the wheel speed at the grounding time. When the wheel speed is lower than the set speed VSL, a vehicle is judged to be in ultra-low mu road travel, and pressure reduction is outputted.

公开(公告)号：JP2003264567A

公开(公告)日：2003-09-19

申请号：JP2002065517

申请日：2002-03-11

Applicant: TOYOTA MOTOR CORP

Inventor： SHOBU MASAYA

IPC: H04L12/40

Abstract: PROBLEM TO BE SOLVED: To synchronize data communication between particular nodes among a plurality of nodes about CAN communication method and system. SOLUTION: Control units such as a revolutionary ECU (electronic control unit) 10, etc., respectively having a CAN controller 30 and sensors such as a G sensor 18, a yaw rate sensor 22 are connected to one another through a CAN bus 26. The revolutionary ECU 10 needed to perform VSC control and sensors 18 to 24 are set as a node having a high priority over data transmission on the CAN bus 26. The revolutionary ECU 10 is made to transmit a trigger frame for requesting the transmission of a control parameter of VSC control to the CAN bus 26 every fixed cycle. The respective sensors 18 to 24 are made to perform A/D conversion processing of their own physical quantity whenever a trigger frame is received and to transmit data obtained as a result of the A/D conversion processing to the CAN bus 26. COPYRIGHT: (C)2003,JPO