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1. 发明专利

JPH06185398A ROAD CONDITION RECOGNIZING METHOD 失效
公开(公告)号：JPH06185398A
公开(公告)日：1994-07-05
申请号：JP33577692
申请日：1992-12-16
申请人： HITACHI LTD
发明人： OKA YOSHIE , SEKOZAWA TERUJI , SHIOTANI MAKOTO
IPC分类号： F02D45/00
摘要： PURPOSE:To provide a method for recognizing a road condition with high accuracy corresponding to a change of a vehicle state due to a change of acceleration or deceleration and the road condition. CONSTITUTION:A memory 12 stores a vehicle state of a predetermined road condition corresponding to various kinds of information of a vehicle such as vehicle speed, and an engine speed, a gear position which are detected in a detection process 11. The information is read out and the state of the vehicle under the predetermined road condition is calculated in a calculation process 13. A road condition is estimated in a road condition estimation process 14 by using the vehicle state on the calculated road condition and the detected vehicle state. Control is performed in a control process 15 based on the information detected in the detection process including the estimated result. A learning judgment unit 16 judges on the basis of some or all of the results in detection process and road condition estimation process, and some information relative to the vehicle after the control processing whether or not learning is carried out. If the learning is carried out, a vehicle state learning means 17 carries out the learning about the vehicle state under the predetermined road condition which is stored in the state memory.

2. 发明专利

JPH05189700A STATUS INFORMING SYSTEM 失效
公开(公告)号：JPH05189700A
公开(公告)日：1993-07-30
申请号：JP263992
申请日：1992-01-10
申请人： HITACHI LTD
发明人： OKA YOSHIE , YAMAKADO MAKOTO , ISHII JUNICHI , OKI HIROSHI
IPC分类号： G08G1/16 , G08G5/06
摘要： PURPOSE:To improve the performance of a status informing system by selecting and informing the status of an important object to be measured with priority and allowing an operator to quickly and accurately recognize information or an instruction. CONSTITUTION:The status informing system is provided with a display device 6 for displaying an image expressing the status of a measured object based upon a measured result of a measuring instrument on a screen, a priority judging part 7 for judging the priority of the measured result based upon importance previously determined correspondingly to the status change of each measured object and a display control part 8 for switching the screen of the device 6 to a display screen on which the status of a measured object having higher importance is emphasized and constituted so as to change the display screen of the device 6 in accordance with changes in the importance of measured results of plural measuring instruments.

3. 发明专利

JPH07123534A METHOD FOR CONTROLLING HEADWAY OF VEHICLES 失效
公开(公告)号：JPH07123534A
公开(公告)日：1995-05-12
申请号：JP26606693
申请日：1993-10-25
申请人： HITACHI LTD
发明人： OKA YOSHIE , TAKANO KAZURO , TANAKA NAOYUKI , KURATA KENICHIRO , IMAIDE TAKUYA , SHIOTANI MAKOTO
IPC分类号： B60R21/00 , B60L15/40 , B60W30/00 , G05B13/02 , G06T1/00 , G08G1/09 , G08G1/16
摘要： PURPOSE:To provide a controller for controlling the headway margins between vehicles in which the safety is enhanced by altering the distance between vehicles and the follow-up performance of control depending on the ambient conditions. CONSTITUTION:The controller for controlling the distance between vehicles comprises means 11 for inputting the ambient image information, a sensor/radar information detecting means 12 for detecting a plurality of pieces of information variable with time, and an operator operation means. The controller further comprises an image processing section 13 for recognizing the ambient conditions based on the inputted image information, and a section 14 for deciding an optimal distance between vehicles based on the sensor/radar information and the image processing results thus allowing alteration of the distance between vehicles and the follow-up performance of control depending on the ambient conditions including the presence of vehicles.

4. 发明专利

JPH0596977A ROAD CONDITION RECOGNIZING METHOD 失效
公开(公告)号：JPH0596977A
公开(公告)日：1993-04-20
申请号：JP26182591
申请日：1991-10-09
申请人： HITACHI LTD
发明人： OKA YOSHIE , SEKOZAWA TERUJI
IPC分类号： B60W10/00 , B60W10/04 , F02D29/02 , F02D45/00
摘要： PURPOSE:To provide a method by which a road condition can be accurately inferred. CONSTITUTION:This road condition recognizing method comprises a detecting means 11 to detect information concerning a vehicle such as vehicle speed, engine speed, and gear position, a vehicle condition computing means 12 under a decided road condition from various information concerning the vehicle detected by the detecting means 11, and a road condition inferring means 13 to infer the road condition by the use of the vehicle condition under the decided road condition computed by the computing means 12 and the vehicle condition detected by the detecting means 11. Consequently, the road condition can be accurately recognized so as to operate the vehicle safely, at low fuel consumption, without disregarding a driver's will.

5. 发明专利

JPH0778004A ON-VEHICLE MICROCOMPUTER NETWORK SYSTEM 失效
公开(公告)号：JPH0778004A
公开(公告)日：1995-03-20
申请号：JP24206093
申请日：1993-09-02
申请人： HITACHI LTD
发明人： TERANISHI YUKO , FUNABASHI SEIJU , SHIOTANI MAKOTO , OKAZAKI TAKEMI , TAKAHASHI SHINSUKE , OKA YOSHIE
IPC分类号： F02D45/00 , G05B9/02 , G05B15/02
摘要： PURPOSE:To lower the down possibility of the whole system by making it hard to affect other parts by trouble even if the trouble occurs to one of a CPU, a sensor, and an actuator. CONSTITUTION:This system is equipped with entirety connection transmission lines 01 and 02 which connect all nodes, a partial connection transmission line 03 which connects some nodes, an execution system CPU 10 which executes a control program as a node, a diagnostic system CPU 11 which diagnoses a fault and backs up the control program, and sensor and actuator control units 20-31 which control the input and output of the sensor and actuator and control a communication with the transmission lines. Then only relative nodes which need to have high reliability and a fast transmission speed, for example, the sensor and actuator control units 30 and 31 to which the sensor and actuator required for engine control are connected and the CPUs 10 and 11 of the execution system and diagnostic system are connected to the partial connection transmission line 03.

6. 发明专利

JPH06243391A NAVIGATION SYSTEM 失效
公开(公告)号：JPH06243391A
公开(公告)日：1994-09-02
申请号：JP2513993
申请日：1993-02-15
申请人： HITACHI LTD
发明人： OKA YOSHIE , TERANISHI YUKO , TAKAHASHI SHINSUKE , FURUYA MASATOSHI , SHIOTANI MAKOTO
IPC分类号： G01C21/00 , G08G1/0969
摘要： PURPOSE:To enable immediate driving operation by displaying plural pieces of detected information and instructions orderly on one display device and enabling an operator to recognize the information and display by viewing one display device. CONSTITUTION:A display controller 3 consists of an economic travel index generation part 5 which generates an economic travel index on the basis of the measurement result of a measuring sensor group 1, an environment recognition part 8 which recognizes environment on the basis of the measurement result of an environment information sensor group 2, an instruction input part 7 which inputs an instruction by a selecting operator on a display screen, a display control part 6 which determines display contents outputted to a display device 4, a speaker 10 which informs in voice on the basis of the recognition result and the display contents, etc., and a speech informing part 9 which determines the contents informed from the speaker. In this case, images based upon the index generated by the index generating means, the recognition result of the environment recognizing means, and the measurement result of a measured object are displayed orderly on one screen.

7. 发明专利

JPH05229461A AUTOMOBILE WITH CONTROL MEANS OF FRICTION COEFFICIENT BETWEEN ROAD SURFACE AND TIRE 失效
公开(公告)号：JPH05229461A
公开(公告)日：1993-09-07
申请号：JP3178992
申请日：1992-02-19
申请人： HITACHI LTD
发明人： YAMAKADO MAKOTO , OKA YOSHIE , OKI HIROSHI , ISHII JUNICHI
IPC分类号： B60B39/02 , B62D63/02
摘要： PURPOSE:To improve the car driving efficiency by maintaining a road surface or a tire surface immediately before the tire earthing, or both the road surface and the tire surface immediately before the tire earthing, by using surface maintaining means, so as to control the friction coefficient and the friction force between the road surface and the tire. CONSTITUTION:A tire temperature sensor 71, a tire humidity sensor 72, and a tire air pressure sensor 73 are provided to each of four wheels, and an ambiance sensor 11 and a car operation sensor 12 are provided. The values of these sensors are input to an operation condition detecting device 13 together with the detecting values of a steering 8, an accelerator 19, a brake 10, and the like. When a hydroplaining phenomenon is detected, a control unit 14 opens a control valve 30, and closes a control valve 31, so as to blow out the exhaust gas to the front sides of the wheels from a piping 51. And a necessary friction force is inferred by an operation condition detecting sensor, and a control valve 41 is opened and closed to increase and decrease the flow rate. Furthermore, by the operation ambiance data, the blowout direction of an exhaust gas blowout port 51 is controlled with a blowout direction control device 61.

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