专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明专利

JP2001165727A ABNORMALITY DIAGNOSING DEVICE FOR MEASURING PART OF ULTRASONIC GAS FLOWMETER AND ULTRASONIC GAS METER PROVIDED WITH ABNORMALITY DIAGNOSING DEVICE 失效
公开(公告)号：JP2001165727A
公开(公告)日：2001-06-22
申请号：JP35073799
申请日：1999-12-09
申请人： YAZAKI CORP , MATSUSHITA ELECTRIC IND CO LTD
发明人： HARADA TOSHIHIRO , MASUDA ISAO , YAMASHITA TOMIISA , NIIMURA NORIO , ASANO KAZUTAKA , UEKI KOICHI , FUJII YASUSHI
IPC分类号： G01F1/66
摘要： PROBLEM TO BE SOLVED: To provide an abnormality diagnosing device for the measuring part of an ultrasonic gas flowmeter constituted so as to perform the diagnosis of abnormality capable of concretely specifying the cause of the generation of abnormality and an ultrasonic gas meter provided with this device. SOLUTION: An abnormality detection means 14-6 detects abnormality of a plurality of items and the abnormality data by the detected items are stored in an abnormality data memory means 14-7 and, when the abnormality detection means 14-6 detects abnormality or corresponding to a demand, a warning means 14-8 issues a warning on the basis of the data stored in the abnormality data memory means.

32. 发明专利

JP2001165718A METHOD AND INSTRUMENT FOR MEASURING GAS FLOW RATE AND ELECTRONIC GAS METER 失效
公开(公告)号：JP2001165718A
公开(公告)日：2001-06-22
申请号：JP35074099
申请日：1999-12-09
申请人： YAZAKI CORP , MATSUSHITA ELECTRIC IND CO LTD
发明人： KODAMA SANSHIRO , MASUDA ISAO , HARADA TOSHIHIRO , YAMASHITA TOMIISA , NIIMURA NORIO , ASANO KAZUTAKA , UEKI KOICHI , FUJII YASUSHI
IPC分类号： G01F1/00 , G01F1/72
摘要： PROBLEM TO BE SOLVED: To individually measure the integral flow rates of specific gas equipment which generates pulses of supply gas as the gas is consumed and normal gas equipment which generates no pulse at a time. SOLUTION: A physical quantity varying with the flow velocity of gas flowing a gas pipe 21 is measured, a pulse propagation decision means 11A decided whether or not pulses are propagated from the downstream side to the gas flowing in the gas pipe 21 according to the mentioned variation, and a pulse frequency calculating means 11B calculates the frequency of the pulses whose propagation has been decided by the pulse propagation decision means 11A, and a 1st flow rate integrating means 11C or 3rd flow rate integrating means 11F integrates the gas as the consumed gas of normal gas equipment 27 generating no pulses of the supply gas as the gas is consumed according to variation in the calculated frequency of the pulses and variation in the measured physical quantity or a 2nd flow rate integrating means 11E integrates the gas as the consumed gas of specific gas equipment 25 generating pulses of the supply gas as the gas is consumed.

33. 发明专利

JP2003139589A GAS SECURITY DEVICE 审中-公开
公开(公告)号：JP2003139589A
公开(公告)日：2003-05-14
申请号：JP2001337682
申请日：2001-11-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUJII YASUSHI , NIIMURA NORIO , YAMAGUCHI MASAKI
IPC分类号： G01F1/00 , F16K37/00 , F23K5/00 , G01B17/00 , G01F1/66 , G01F3/22 , G01S15/08
摘要： PROBLEM TO BE SOLVED: To secure the safety by detecting the operation state of a shut-off valve. SOLUTION: By measuring the distance from an ultrasonic sensor 2 to the shut-off valve 1 by variation of a propagation time of an ultrasonic wave, the correct position of the shut-off valve 1 can be detected. Thereby, whether or not the shut-off valve properly works becomes clear, so that the safety is further improved.

34. 发明专利

JP2002039823A GAS MEASUREMENT DEVICE 失效
公开(公告)号：JP2002039823A
公开(公告)日：2002-02-06
申请号：JP2000222058
申请日：2000-07-24
申请人： MATSUSHITA ELECTRIC IND CO LTD , TOYO GASMETER CO
发明人： SATO MASATO , NIIMURA NORIO , FUJII YASUSHI , UEKI KOICHI , MIZUKOSHI JIRO , ISONO NOBORU , HORI FUJIO
IPC分类号： G01F1/66
摘要： PROBLEM TO BE SOLVED: To provide a gas measurement device capable of accurately measuring a gas consumption over a wide gas-type range by providing plural kinds of ultrasonic sensors having different resonance frequencies in measuring a gas instantaneous flow rate. SOLUTION: By means of two sets of ultrasonic sensors comprising first and second sensors 1a and 1b (low frequency sensors) and first and second sensors 2a and 2b (high frequency sensors) respectively arranged opposedly to a gas passage 11, ultrasonic waves with different resonance frequency bands are transmitted/received mutually for detecting a flow rate, and on the basis of this flow rate, a gas consumption is measured.

35. 发明专利

JP2001255186A FLOW RATE MEASURING SYSTEM 失效
公开(公告)号：JP2001255186A
公开(公告)日：2001-09-21
申请号：JP2000064624
申请日：2000-03-09
申请人： MATSUSHITA ELECTRIC IND CO LTD , TOKYO GAS CO LTD
发明人： NAGAOKA YUKIO , ABE HIDEJI , UMEKAGE YASUHIRO , FUJII YASUSHI , NUKUI KAZUMITSU , SUZUKI MAMORU , YUASA KENICHIRO
IPC分类号： G01F1/00 , G01F1/66 , G01F15/04
摘要： PROBLEM TO BE SOLVED: To provide a flow rate measuring, system capable of holding a measuring accuracy by accurately measuring the flow rate of a fluid, even if the type of a gas is changed. SOLUTION: The flow rate measuring system comprises transmitting and receiving means 5, 6 for transmitting and receiving sound waves to and from a fluid in a channel 7, a flow rate detecting means 8 for measuring a propagation time of the wave in the fluid, a flow coefficient setting means 9 for deciding the flow coefficient, a flow rate calculating means 10 for calculating the flow rate based on the flow coefficient and the propagation time, a temperature- detecting means 11 for measuring the temperature of the fluid, and a coefficient correcting means 12 for changing the flow coefficient of the means 9, based on the measured temperature and the propagation time.

36. 发明专利

JP2001183197A GAS MEASURING APPARATUS 失效
公开(公告)号：JP2001183197A
公开(公告)日：2001-07-06
申请号：JP36985599
申请日：1999-12-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SATO MASATO , FUJII YASUSHI , NIIMURA NORIO
IPC分类号： G01F1/00 , G01F1/66 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To reduce the consumption of electric power consumed in a control circuit. SOLUTION: The gas measuring apparatus is constituted of an ultrasonic wave-type measuring part which measures the consumption amount of a gas. The measuring apparatus is constituted of a pressure sensor 8 which measures the pressure of the gas. The measuring apparatus is constituted of the control circuit 7 which controls the ultrasonic wave-type measuring part. The measuring apparatus is constituted of a measurement starting means 10 which starts the measurement of the consumption amount of the gas on the basis of a signal from the pressure sensor. The measurement starting means 10 detects the signal from the pressure sensor 8 so as to confirm that the pressure of the gas exists, and it supplies the electric power to an ultrasonic-sensor drive circuit 9. Only when the pressure of the gas exists, a flow rate is measured. As a result, the consumption of the electric power consumed in the control circuit can be reduced.

37. 发明专利

JP2001065864A GAS SAFETY UNIT 失效
公开(公告)号：JP2001065864A
公开(公告)日：2001-03-16
申请号：JP23932499
申请日：1999-08-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUJII YASUSHI
IPC分类号： F23N5/26
摘要： PROBLEM TO BE SOLVED: To obtain a gas safety unit which can be used, as it is, even when it runs away due to dew formation or external noise by resetting a control circuit and writing the initial set values of individual gas safety units and the integrated quantity of used gas, previously recorded in an EEPROM, into the control circuit. SOLUTION: The gas safety unit comprises an EEPROM 5, and a switch 6 for resetting a control circuit 4. When the controller 4 in the gas safety unit runs away due to dew formation or an external noise, the control circuit 4 is actuated by means of the switch 6. Subsequently, the EEPROM read function 9 of the control circuit 4 is actuated through a communication interface 8 to read in the initial set values or the difference of individual gas safety units, disappearing from a memory in the control circuit 4, from the EEPROM 5. Furthermore, integrated values are inputted from an integrated value display section 10 to the control circuit 4 through the communication interface 8.

38. 发明专利

JP2000304582A GAS SAFETY DEVICE 失效
公开(公告)号：JP2000304582A
公开(公告)日：2000-11-02
申请号：JP11327499
申请日：1999-04-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： UEDA YOSHIHIRO , NIIMURA NORIO , FUJII YASUSHI
IPC分类号： G01F3/22 , G01D3/028 , G01F1/66 , G01F15/04
摘要： PROBLEM TO BE SOLVED: To accurately measure gas flow by confirming an unused status of gas with a shutoff valve in a gas passage closed to set a measurement value at this time at a zero point. SOLUTION: A drive circuit 6 for a shutoff valve 7 received a signal from a control circuit 4, closes the shutoff valve 7. The control circuit 4 monitors gas pressure on a downstream from a passage 2 with a pressure sensor 8 to judge that an no gas flows when the pressure is constant during a predetermined period. A zero-point of a gas safety device can be compensated by setting the gas pressure at this time as a zero point of gas flow measured with an ultrasonic sensor 1 in the case of gas unused in the control circuit 4. The zero-point is periodically compensated but can be done when the gas is not frequently used by a gas user by learning control. Also, leakage of gas piping or user of a gas appliance can be considered when the gas pressure on the downstream side rapidly drops during compensating the zero-point, and then the compensating zero-point is interrupted.

39. 发明专利

JPH09304213A MEASURING CIRCUIT FOR GAS PRESSURE OF GAS SAFETY DEVICE 失效
公开(公告)号：JPH09304213A
公开(公告)日：1997-11-28
申请号：JP12542396
申请日：1996-05-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUJII YASUSHI
IPC分类号： G01L19/08 , H03M1/08
摘要： PROBLEM TO BE SOLVED: To provide a measuring circuit, for the gas pressure of a gas safety device, by which a pressure drop in the gas pressure can be judged correctly even when a noise in a pressure sensor is not removed. SOLUTION: A pressure-drop judgment part 3, to which the analog signal of a pressure sensor 1 is input, compares the analog signal with a prescribed value by using an analog comparator, and it outputs a pressure drop signal to a pressure-drop and malfunction prevention part 4 when the signal is at a prescribed value or lower. When the pressure drop signal 7 is input, the pressure-drop and malfunction prevention part 4 outputs a present-pressure-value request 9 to a pressure-value measuring part 2 so as to request the present pressure value of a gas pressure. The pressure-value measuring part 2 deals with the request, and it measures the gas pressure so as to output a present pressure value 10. The pressure-drop and malfunction prevention part 4 compares the present pressure value 10 with a prescribed value so as to confirm the judgment result of the pressure-drop judgment part 3, and it outputs a pressure drop signal 7 to a control part 5 only when the result can be confirmed.

40. 发明专利

JPH08210631A SENSOR INPUT AND OUTPUT DEVICE FOR GAS SAFETY APPARATUS 失效
公开(公告)号：JPH08210631A
公开(公告)日：1996-08-20
申请号：JP1614195
申请日：1995-02-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TOKUNAMI TAKAO , FUJII YASUSHI
IPC分类号： G01F3/22 , F23N5/24
摘要： PURPOSE: To reduce a current consumption and to simultaneously stabilize the voltage of a supply power source for a long period by supplying power to meet the timing of detecting a pressure by a control circuit and so controlling as to increase the number of times of pressure detections by a threshold value discriminator. CONSTITUTION: A sensor input and output device holds the power source voltage of a pressure sensor 1 and a threshold value discriminator 3 supplied with power from a constant-voltage circuit 6 by the voltage stabilizing operation of the circuit 6 and the reference voltage of an A-D converter 2 constant to eliminate the influence of the voltage change of a battery by using for a long period and the voltage change at the time of loading of operating a shut-off valve. A control circuit 5 switches a power source switching circuit 4 to meet the timing for inputting a pressure value, intermittently operates the sensor 1, the discriminator 3 and the converter 2 to reduce the current consumption per time mean. The circuit 5 measures by the discriminator 3 having low current consumption in the case of monitoring the specific pressure such as high or lower voltage of high measuring frequency, and reduces the current consumption by decreasing the measuring frequency by the converter 2 having much current consumption.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式