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1. 发明专利

JPH1141261A MULTIPLE COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPH1141261A
公开(公告)日：1999-02-12
申请号：JP19705597
申请日：1997-07-23
申请人： DENSO CORP , TOYOTA MOTOR CORP
发明人： TAKAGI NOBUTOMO , KANDA KOJI , SASAKI AKIHIRO , KISHIGAMI TOMOHISA , TANAKA AKIHIRO , HONDA HIROSHI , KUME MASATO , SAKAI KAZUNORI
IPC分类号： B60R16/023 , G08C15/00 , G08C25/00 , H04L12/40 , B60R16/02
摘要： PROBLEM TO BE SOLVED: To provide multiple communication equipment capable of securing the transmission/reception of data through a communication bus having no relation with a spot, where abnormlaity has been occured, even when the abnormality occurs at the spot at one part of the communication bus. SOLUTION: When any abnormality occurs at a certain spot on a communication bus 22, a control circuit 34 outputs a communication bus disconnect signal to a communication bus disconnecting circuit 38 or 39 and stops transmitting/ receiving data with the communication bus including the abnormal spot between an instrument panel system communication bus 23 and a door system communication bus 24. Thus, the transmission/reception of data can be secured in the system of the communication bus 22 including no abnormal spot and even when any fault occurs in the door system communication bus 24 during a travel, for example, driving can be prevented from being affected with no influence upon a meter 25, EFI 26 and ABS 27 as the measuring/controlling instruments of an instrument panel system.

2. 发明专利

JPH0396469A ABNORMALITY DETECTION DEVICE FOR HYDRAULIC PRESSURE SUPPLY DEVICE 失效
公开(公告)号：JPH0396469A
公开(公告)日：1991-04-22
申请号：JP23239589
申请日：1989-09-07
申请人： TOYOTA MOTOR CORP
发明人： KOMAZAWA MASAAKI , KONDO KOICHI , ISHIZAKA MUNENORI , HAMADA CHIAKI , SAKAI KAZUNORI , AKIYOSHI MICHIO , ITO KENJI , NAKANISHI NOBUYASU
IPC分类号： B60T8/94
摘要： PURPOSE:To enable detecting even the occurrence of liquid leakage to a reservoir by judging the occurrence of pump seizure on the basis of sharp or gradual drop of motor terminal voltage immediately after stopping the drive of a motor with the second drive means. CONSTITUTION:Upon detecting an abnormality, a pump motor C is first driven with the first drive means A for the first predetermined time. After stopping the drive operation of the motor, the judgement of an abnormality is made on the basis of a drop in the terminal voltage of the motor C. In other words, when the seizure of the pump B does not exist, a load on the motor C at the time of drive stopping, changes depending upon whether a liquid is leaking into a reservoir E or not. Consequently, when the terminal voltage sharply drops, it is judged that at least one of the pump seizure and liquid leakage to the reservoir is taking place. Then, the motor C is driven with the second drive means F for the second predetermined time long enough to pump out the whole amount of the leakage liquid. If the terminal voltage drop immediately after stopping the drive operation is sharp, the second judgement means G judges that the seizure of the pump B is existing.

3. 发明专利

JPH02310156A ANTI-SKID CONTROL DEVICE 失效
公开(公告)号：JPH02310156A
公开(公告)日：1990-12-25
申请号：JP12965389
申请日：1989-05-23
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： FUKUSHIMA AKIRA , MAKINO NOBUHIKO , SAKAI KAZUNORI , INOUE HIDEO , UCHIDA KIYOYUKI
IPC分类号： B60T8/1755 , B60T8/172 , B60T8/1763 , B60T8/1764 , B60T8/42 , B60T8/64 , B60T8/66
摘要： PURPOSE:To enhance the braking performance and maneuvering stability at cornering by selecting either the reference speed based on the mean speed valve of the left and right rear wheels to the reference speed based on the speed max. value of the left and right rear wheels according to the road surface condition, and therewith controlling slip of wheel. CONSTITUTION:The speed of each wheel at the front left and right and the rear left and right of the wheel is sensed by respective means a-d. The road condition is judged by a means (e) on the basis of signals given by these means a-d. The reference speed is calculated by a means (f) on the basis of signals given by the means a-d. No.1 reference speed is calculated on the basis of the mean speed value of the left and right rear wheels, while No. 2 reference speed is calculated on the basis of the max. speed value of the left and rear wheels, and either of them is selected according to the result from judgement made by the means (e). With the selected reference speed, a means (g) controls the wheel so as to prevent slippage.

4. 发明专利

JPH02144250A DEVICE FOR COMPUTING VARIOUS ROTATING VALUES OF WHEEL 失效
公开(公告)号：JPH02144250A
公开(公告)日：1990-06-04
申请号：JP29914888
申请日：1988-11-25
申请人： TOYOTA MOTOR CORP
发明人： WATANABE MASAO , SAKAI KAZUNORI
IPC分类号： G01P3/481 , B60T8/00
摘要： PURPOSE:To make it possible to precisely compute various rotating values by providing a changing means for increasing the weighing values of parameters which are detected in the vicinity of time points of computation for the rotating values by a weighing computing means, in proportion to pulse intervals of pulse signals in synchronization with the rotation of a wheel. CONSTITUTION:A pulse interval detecting means M1 detects the intervals of pulse signals which are delivered in synchronization with the rotation of a wheel R, and a parameter computing means M2 calculates parameters which give various rotating values such as a rotational speed of the wheel R, a speed, an acceleration or the like, in accordance with thus detected intervals. A predetermined weighing is given to more than at least one of the parameters which have been obtained until the time points of computation for the various rotating values which are therefore computed. Thus computed rotating values are used for a predetermined control for a vehicle. In this arrangement, there is provided a weighing changing means M4, for increasing the above-mentioned weighing of the parameters detected in the vicinity of the time points of computation for the various rotating values, in proportion to the detected pulse intervals.

5. 发明专利

JPS62112070A DETECTING DEVICE FOR WIRE BREAKING OF SENSOR 失效
公开(公告)号：JPS62112070A
公开(公告)日：1987-05-23
申请号：JP25164085
申请日：1985-11-09
申请人： FUJITSU TEN LTD , TOYOTA MOTOR CORP
发明人： WATANABE HIDEO , SAKAI KAZUNORI
IPC分类号： G01P3/42 , G01R31/02
摘要： PURPOSE:To securely and easily detect the wire breaking of a sensor by providing an electronic circuit which becomes active when the sensor generates no output and monitoring the output of this electronic circuit. CONSTITUTION:The base circuit of a transistor (TR) 16 is connected to the output side of the sensor 14 through a comparing circuit 15. The output of this TR 16 is supplied to the comparing circuit 23 of a control circuit 17. If the coil 13 of the sensor 14 is broken, the TR 6 turns off and its output goes up to the high level, so the output 32 of the control circuit 17 also rise to the high level, so that the breaking of the sensor coil 13 is detected. Further, even if a lines l11, l12, or l13 is broken, the input 22 to the comparing circuit becomes high, so the output 32 of the control circuit 17 goes up to the high level, the disconnection state is detected.

6. 发明专利

JPS61291261A ANTISKID DEVICE FOR VEHICLE 失效
公开(公告)号：JPS61291261A
公开(公告)日：1986-12-22
申请号：JP13276885
申请日：1985-06-18
申请人： FUJITSU TEN LTD , TOYOTA MOTOR CORP
发明人： WATANABE HIDEO , SAKAI KAZUNORI
IPC分类号： B60T8/1755 , B60T8/24 , B60T8/58 , B60T8/60
摘要： PURPOSE:To shorten a braking distance at the time of turning with a brake applied by configurating a device in such a way that a control reference speed in an antiskid device is set separately for a right and a left wheel depending on the steering angle, and a braking force is controlled independently for the right and left wheels on the basis of the control reference speed. CONSTITUTION:When a brake is applied while a car is running, a steering angle detected by a steering sensor 15 is read by a controlling device 12, and a radius of a turning circle is computed based on the said data. Then, the ratio of a right and a left wheel speed to a car speed based on the said radius of the turning circle is computed in each of the speed of the wheels detected by each of wheel sensors 11 (suffix is omitted). And the car speed is also computed based on the calcurated value described above.Then, a control reference speed for the right and left wheels is computed based on the said car speed, and each of brake oil pressure controlling devices 13 for each of the right and left wheels is independently controlled based on the said control reference speed.

7. 发明专利

JPH1030960A OPTICAL SENSOR 失效
公开(公告)号：JPH1030960A
公开(公告)日：1998-02-03
申请号：JP3508097
申请日：1997-02-19
申请人： DENSO CORP , TOYOTA MOTOR CORP
发明人： TAKASHIMA MASAKI , HORIBA KEIJI , SASAKI AKIHIRO , TAKAGI NOBUTOMO , SUZUKI TOMONORI , SAKAI KAZUNORI
IPC分类号： G01J1/42 , B60Q1/02 , G01J1/18 , G01J1/44
摘要： PROBLEM TO BE SOLVED: To suitably hold a desired S/N ratio even when an illuminance range as an object to be detected is different, and to integrate a plurality of optical sensors such as optical sensors for an on-vehicle automatic lighting device, optical sensors for a meter-luminance correction device, optical sensors for an air-conditioning control device or the like. SOLUTION: A photoelectric current iL which corresponds to a quantity of light received by a light receiving element 1 is generated from the light receiving element. At this time, two kinds of currents i1, i2 which are proportional to the generated photoelectric current iL are generated by a current mirror circuit 2. Then, the current i1 on one side is output to an air-conditioning control device or the like from an output terminal T3 as a current signal which is amplified arbitrarily through a processing circuit 3 which comprises an operational amplifier 31. The current i2 on the other side is output to an automatic lighting device, a meter-luminance correction device or the like from an output terminal T4 as a frequency signal whose frequency is changed in proportion to the magnitude of the current i2 through a processing circuit 4 which comprises an oscillation circuit.

8. 发明专利

JPH04331654A ANTISKID CONTROLLER 失效
公开(公告)号：JPH04331654A
公开(公告)日：1992-11-19
申请号：JP6452591
申请日：1991-03-28
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： MASAKI SHOICHI , TAMURA KIMIO , WAKAO TERUYOSHI , NAKAJIMA NORIYUKI , ASAMI KEN , SAKAI KAZUNORI
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1763
摘要： PURPOSE:To execute antiskid control conformed to a frictional state in succession by changing the contents of the antiskid control in accordance with the friction factor between a road surface and a tire, while holding information on the frictional state. CONSTITUTION:When decompression control is performed by a control means (b), there are provided a grade changing means (d), changing a decompressing grade at a partial period during the decompressing period, and a judging means (e) judging whether the friction factor between a tire and a road surface is in a state of being lowered or not, and when it is so judged that the friction factor is a lowered state by this judging means (e), the judged result is stored in a storage means (g) Then, a fact that the friction factor is reset to a higher state from the lower state is detected, and simultaneously when this rest state is detected, an erasing means (f) memory contents of the storage means (g). In succession, a prohibiting means (h) prohibits any change of a decompression grade by the grade changing means (d) at a time when the storage means (g) stores a fact that the friction factor is in a state of being lowered.

9. 发明专利

JPH04315058A APPARATUS FOR JUDGING DETECTION ABNORMALITY OF ACCELERATION DETECTOR OF MOVING BODY 失效
公开(公告)号：JPH04315058A
公开(公告)日：1992-11-06
申请号：JP10891391
申请日：1991-04-12
申请人： TOYOTA MOTOR CORP
发明人： INOUE YOSHIAKI , SAKAI KAZUNORI , MIYAKE KEIJI
IPC分类号： G01P15/00 , G01P15/18 , G01P21/00
摘要： PURPOSE:To judge whether three acceleration sensors for detecting the accelerations of a moving body in forward, rearward, left and right directions are normally operated. CONSTITUTION:A detection abnormality judging apparatus is adapted to an acceleration detector having acceleration sensors 18, 20, 22 arranged so that two directions are spaced apart at an equal angle alpha from one direction and detecting accelerations G1, G2, G3 in three directions. In first constitution, alphais 120 deg. and, when the absolute value of the sum total Gt of G1-G3 exceeds a threshold value G0, it is judged that any one of the sensors is abnormal. In second constitution, predetermined operation is performed when a moving body is in a straight advance state to judge the abnormal sensor.

10. 发明专利

JPH0374248A ANTISKID CONTROL DEVICE 失效
公开(公告)号：JPH0374248A
公开(公告)日：1991-03-28
申请号：JP18844189
申请日：1989-07-20
申请人： TOYOTA MOTOR CORP
发明人： WATANABE MASAO , SAKAI KAZUNORI
IPC分类号： B60T8/48 , B60T8/172 , B60T8/1763 , B60T8/58
摘要： PURPOSE:To properly perform hydraulic control by setting pressure reduction time approximately inversely proportional to the wheel acceleration average and controlling a hydraulic control valve device through a control means when the detected slipping degree of a wheel increases to the extent of the normal condition. CONSTITUTION:In an antiskid device, when the slipping degree of a wheel detected by a slip detecting means 1 increases to the extent of the normal condition under which the pressure reduction in brake oil is required, a pressure reduction time setting means 5 sets pressure reduction time approximately inversely proportional to the average time of wheel acceleration before increasing to the extent of the normal condition detected by a wheel acceleration average detecting means 4 and supplies a control means 2 with the set time. In addition, the control means 2 controls a hydraulic control valve device (pressure increasing and decreasing two position switch valve) 3 during pressure reduction time for reducing the pressure of brake oil. This makes it possible to properly control the pressure of brake oil regardless whether the pressure of brake oil, which will contribute to the friction factor on road surface, is high or not.

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