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1. 发明专利

JPH04285401A RADIO NOISE PREVENTING METHOD 失效
公开(公告)号：JPH04285401A
公开(公告)日：1992-10-09
申请号：JP4638891
申请日：1991-03-12
申请人： HITACHI LTD
发明人： TOCHIO YUKIHIRO
IPC分类号： B60L3/00
摘要： PURPOSE:To suppress noise in an electronic controller for automobile comprising a microcomputor and an external memory. CONSTITUTION:A capacitor, exhibiting low impedance for high frequency components, is inserted between the ground and a bus line 11 connecting a microcomputor 1 and an external memory 10 which transmits high frequency rectangular wave signal and produces radio wave noise in an automobile radio unit. According to the invention, radio wave noise can be reduced by about 7dB.

2. 发明专利

JPS63301120A ON-VEHICLE SUPERSONIC-WAVE HUMIDIFIER 失效
公开(公告)号：JPS63301120A
公开(公告)日：1988-12-08
申请号：JP13486487
申请日：1987-06-01
申请人： HITACHI LTD
发明人： KURIYAMA SHIGERU , TOCHIO YUKIHIRO , YAMAMORI HEITARO , HORIGUCHI TAKEMASA , INOUE NOBUO
IPC分类号： F24F11/02 , B60H3/02 , F24F6/12
摘要： PURPOSE:To early restart atomization, preventing the high temperature deterioration of a vibrating element by suspending the excitation of the vibrating element and permitting the continuous operation of a blower for sending mists into a blowing-out port when the vibrating element for vibrating the water in a humidifier is at a high temperature. CONSTITUTION:A vibration element 7 is driven by an exciting circuit 8, and applies the supersonic-wave vibration onto the water 17 in a humidifier. The generated mist is blasted from a blasting-out port by a blower driven by a motor 18. The ware level in the humidifer is detected by a water level detecting electrode 13 and a water level detecting circuit 14. In this constitution, a temperature detecting element 15 is installed onto the vibration element 7 part. An excitation controlling circuit 19 which stops the electric conduction to the exciting circuit 18 on the basis of the detection signal supplied from the temperature detecting element 15 when the temperature of the vibration element 7 part becomes over a prescribed value is installed. Further, a motor control circuit 20 which carries out electric conduction to the motor 18 independently of the existence of excitation when the water level detecting circuit 14 generates a water level existence signal is installed.

3. 发明专利

JP2003204127A PRINTED BOARD STRUCTURE 审中-公开
公开(公告)号：JP2003204127A
公开(公告)日：2003-07-18
申请号：JP2002003511
申请日：2002-01-10
申请人： HITACHI LTD
发明人： TOCHIO YUKIHIRO
IPC分类号： H05K1/02
摘要： PROBLEM TO BE SOLVED: To provide a printed board structure in which a printed board can be divided easily without requiring any extra expense nor damaging electronic parts mounted on the board near the end face of the product section of the substrate. SOLUTION: In the printed board structure, V-grooves 11A and 11B are formed on the board dividing line of the printed board 10 which becomes the boundary between the product section 10A on which the electronic parts 13 are mounted and a disposable board section 10B which is removed afterward and a plurality of through holes 12 made through the board 10 along the grooves 11A and 11B. The holes 12 are arranged selectively with respect to the parts 13. COPYRIGHT: (C)2003,JPO

4. 发明专利

JPH07311042A OPTICAL FIBER GYROSCOPE 失效
公开(公告)号：JPH07311042A
公开(公告)日：1995-11-28
申请号：JP10386694
申请日：1994-05-18
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： NODA JUNICHI , KANEHATA YASUO , TOCHIO YUKIHIRO
IPC分类号： G01C19/72
摘要： PURPOSE:To automatically correct variation or fluctuation in the degree of phase modulation to detect rotational angular velocity with high accuracy by inhibiting the generation of a new phase-modulation-degree adjusting signal until a predetermined time elapses immediately after the degree of phase modulation has been adjusted. CONSTITUTION:A D/A converter 16 converts a phase-modulation-degree adjusting value H output from a microcomputer 14 into a phase-modulation-degree adjusting signal EL, which is then fed to a phase modulator (PZT) driver 11. The driver 11 subjects a pulse signal fM to amplitude modulation using the adjusting signal EL, produces a phase modulation signal PM and feeds the signal PM to the PZT 10, so that a light beam propagating within an optical fiber loop 9 is subjected to phase modulation. When the adjusting value H is varied, the computer 14 inhibits the calculation of the adjusting value H until a predetermined response time elapses; calculations are performed after the elapse of the response time. Therefore, the amplitude value of the signal PM is adjusted precisely, so the degree of modulation due to variations in components and in environmental conditions is corrected, and the accuracy of rotational angular velocity and sensitivity can be held in good states.

5. 发明专利

JPS6338022A HYGROMETER FOR VEHICLE 失效
公开(公告)号：JPS6338022A
公开(公告)日：1988-02-18
申请号：JP17997886
申请日：1986-08-01
申请人： HITACHI LTD
发明人： KURIYAMA SHIGERU , TOCHIO YUKIHIRO , KUME HIDEO
IPC分类号： B60H1/00 , B60H3/02 , B60H3/06 , G01N27/12
摘要： PURPOSE:To quicken responsiveness in a sound sensing element and thereby make humidity or the like in a car room measurable accurately, by leading water in a tank into a feed water member via a capillary tube and dampening the sound sensing element, while ventilating this sound sensing element. CONSTITUTION:A thermistor 6 for temperature detection is set up in a body 1 forming a ventilation flue. And, a gauge pipe 12 is attached to this body 1, and a capillary tube 10 is inserted into the pipe 11 attached to an end of this gauze pipe 12, while both 10 and 11 are inserted into a tank 7 each. And, absorbent cotton 13 is installed in the gauze pipe 12 and, and a thermistor 14 for humidity detection is set up in this absorbent cotton 13. With this constitution, at the time of hygrometry, a fan 4 is rotated by a motor 5 whereby water sticking to the circumference of the thermistor 14 is evaporated, thus the responsiveness in the thermistor 14 is improved. In addition, on the basis of each output of these thermistors 6 and 14, a relative humidity is found, thus an air conditioner is controlled.

6. 发明专利

JPS58140580A PROTECTIVE DEVECE FOR COMPRESSOR OF AIR CONDITIONER FOR AUTOMOBILE 失效
公开(公告)号：JPS58140580A
公开(公告)日：1983-08-20
申请号：JP2264382
申请日：1982-02-17
申请人： HITACHI LTD
发明人： TOCHIO YUKIHIRO , HAYASHIBARA TOSHIO
IPC分类号： F25B49/02 , B60H1/32 , F25B49/00

7. 发明专利

JPS5812818A COMPRESSOR PROTECTING DEVICE IN VEHICLE AIR CONDITIONING SYSTEM 失效
公开(公告)号：JPS5812818A
公开(公告)日：1983-01-25
申请号：JP10828381
申请日：1981-07-13
申请人： HITACHI LTD
发明人： TOCHIO YUKIHIRO
IPC分类号： F25B49/02 , B60H1/32
摘要： PURPOSE:To make electrical power unnecessary for holding a compressor stopped in a compressor protecting device in a vehicle air conditioning system, by which the compressor is stopped when intake pressure is lowered, by providing a self-sustaining type latching relay in a compressor stopping outlet part that operates upon the detection of pressure drop. CONSTITUTION:When the low pressure side of a compressor 2 is below a predetermined pressure and therefore, a pressure detecting part 4 delivers a low pressure indicating signal to a timer 5, the timer 5 delivers a compressor stopping signal to a pulse part 6 if the low pressure condition is sustained more than a set time period. Thus, the pulse part 6 delivers pulses to an outlet part 7 for attracting a self-sustaining function type latching relay 29 of the outlet part 7, so that a magnetic clutch 1 is deenergized for stopping the compressor 2. Since the latching relay 29 has the self-sustaining function, the compressor 2 is maintained in its stopping condition with no electrical power consumption.

8. 发明专利

JP2000111413A PROTECTING CIRCUIT FOR EXHAUST GAS SENSOR 失效
公开(公告)号：JP2000111413A
公开(公告)日：2000-04-21
申请号：JP27958898
申请日：1998-10-01
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NOTO YASUO , HAYASHIBARA TOSHIO , TOCHIO YUKIHIRO , ISHIKAWA HIDEAKI , TSURUMAKI KIYOSHI , TANNO HEIKICHI
IPC分类号： H05K10/00 , G01K7/00
摘要： PROBLEM TO BE SOLVED: To protect a sensor when an electronic circuit malfunctions by stopping a temperature detecting circuit when the output signal of the temperature detecting circuit is extended by the time longer than a predetermined time. SOLUTION: A signal, which operates the constant current circuit for detecting temperature, is inputted into a counter. When this value becomes the constant time or more, the constant current circuit (temperature detecting circuit) is forcibly stopped. When switches SW1 or SW2 continues the ON state, the current continues to flow. By this current, oxygen disappears from an oxygen-reference chamber by zirconia, or, since the oxygen migrates from the place, where oxygen is not resent, the trouble that the oxygen of the grid of zirconia migrates, occurs. For eliminating such troubles, the starting of SW1 and SW2 is driven by the signal of the circuit for outputting the prohibiting signal and the signal taking AND when the respective signals do not return within the specified time. That is to say, when the signals of SW1 and SW2 become longer than the time determined by the time constant, the prohibiting signal becomes HIGH.

9. 发明专利

JPH05155247A ULTRASONIC ATOMIZING DEVICE FOR AUTOMOBILE AND COMBINATION WITH EXTERNAL DEVICE THEREFOR 失效
公开(公告)号：JPH05155247A
公开(公告)日：1993-06-22
申请号：JP32064791
申请日：1991-12-04
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： SUZUKI MITSUSHIGE , KANEHATA YASUO , TOCHIO YUKIHIRO
IPC分类号： B60H3/02 , F24F6/12 , F24F11/02
摘要： PURPOSE:To provide an ultrasonic atomizing device for an automobile which can function in plural number of modes such as easy inspection to make the wide range of practical use possible by referring to the information of air in a car room to be humidified, correcting the quantity of atomization according to the information of the air in the car room, and moreover referring to the information of the inside of an ultrasonic atomizing device from the outside. CONSTITUTION:An ultrasonic atomizing device 16 for an automobile is provided with communicating means such as a connector 35, and the information held by an outside device 18 of air in a car room is taken into an information transmission processing circuit 12, and the signal of atomizing quantity computed from the output of an atomizing quantity signal converting circuit 11 is corrected on the taken in information, and a piezoelectric transducer 4 is excited on the corrected atomizing quantity signal to humidify the air in the car room. In addition, the information of the state of each part in the ultrasonic atomizing device 16 is sent through the connector 35 to the outside device 18 for diagnosing the failure of the ultrasonic atomizing device 16 on a control panel 34 connected to the outside device 18.

10. 发明专利

JPS63210541A VEHICLE HUMIDIFIER 失效
公开(公告)号：JPS63210541A
公开(公告)日：1988-09-01
申请号：JP4296887
申请日：1987-02-27
申请人： HITACHI LTD
发明人： KURIYAMA SHIGERU , TOCHIO YUKIHIRO , YAMAMORI HEITARO , HORIGUCHI TAKEMASA
IPC分类号： F24F6/00 , B05B17/06 , B60H3/02 , F24F6/12
摘要： PURPOSE:To make it possible to cut off power supply to an oscillation circuit driving a vibrator and to prevent an electrode of the vibrator in contact with water being corroded in water and damaged by detecting the water by a water level detection circuit when the voltage of the detection electrode becomes below a difined value. CONSTITUTION:A detection voltage corresponding to a current flowing to a detection electrode 20 from an auxiliary electrode 19 in accordance with a level of water 9 by an detection electrode 20 provided at a water level detecting position of the water 9 within an atomizing tank 4 is inputted into a water level detection circuit 13, where by, when the voltage of the detection electrode 20 has reached a defined value, it is detected that the water level has been lowered, and the power supply to an oscilla tion circuit 8 is interrupted by the relay 15 of the water level detection circuit 13, and when the water level is restored, the power supply is again applied. When a power supply switch 12 is turned off, a current from a battery 6 is completely inter rupted because a normally open contact 16 is opened and a current to the detection electrode 20 from the auxiliary electrode 19 of the atomizing electrode 19 is also cut off. Therefore, the galvanic corrosion of the auxiliary electrode 19 is produced only when the power supply switch 12 is turned on, and the corrosion of the electrode 19 is reduced.

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