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31. 发明专利

JPS60260879A ANTENNA FOR BURRIED OBJECT SEARCHING RADER 失效
公开(公告)号：JPS60260879A
公开(公告)日：1985-12-24
申请号：JP11766584
申请日：1984-06-08
申请人： TOKYO GAS CO LTD
发明人： TANAKA HIROAKI , MATSUURA MASAYUKI , FURUSAWA HAJIME
IPC分类号： G01S7/02 , G01S13/88 , G01V3/12
摘要： PURPOSE:To remove unnecessary reflection waveforms from the ground surface, etc. and to search a burried object underground by arranging two receiving antennas on both sides of a transmitting antenna, and signal-processing differentially coupling the two receiving antennas. CONSTITUTION:Transmitting signals are sent from a transmitter 4 to the transmitting antenna 1 based on control from a controlling device 8, and radio waves of specified output and frequency are transmitted. Transmitted radio waves are reflected on hitting the ground surface and a gas conduit 3, return as echoes, and received by receiving antennas 2 and 2'. Received radio waves pass through the differential coupling 9 through receiving lines 10, 10', are subjected to signal processing by a signal processing device 6, and displayed on a display recording device 7. As reflection waveform from the ground surface is made symmetric vertically by the two receiving antennas, canceled at the differential coupling 9, and only reflection waveforms from the objective burried object 3 are subjected to signal processing.

32. 发明专利

JPS58114197A METER SENSOR 失效
公开(公告)号：JPS58114197A
公开(公告)日：1983-07-07
申请号：JP21024781
申请日：1981-12-28
申请人： TOKYO GAS CO LTD , NIPPON ELECTRIC CO
发明人： TANAKA HIROAKI , GOTOU JIYUNICHI
IPC分类号： G08C19/00 , G08C25/00

33. 发明专利

JPS53114454A AUTOMATIC INSPECTION SYSTEM OF METER 失效
公开(公告)号：JPS53114454A
公开(公告)日：1978-10-05
申请号：JP2064177
申请日：1977-02-26
申请人： TOKYO GAS CO LTD
发明人： TANAKA HIROAKI , ITAKURA NORIYUKI
IPC分类号： G08C15/00 , G01D5/12 , G01F15/06 , G08C15/06

34. 发明专利

JPH0562832B2 失效
公开(公告)号：JPH0562832B2
公开(公告)日：1993-09-09
申请号：JP6187685
申请日：1985-03-28
申请人： TOKYO GAS CO LTD
发明人： UEHARA KYOJI , TANAKA HIROAKI , UEKI TAKASHI , TAI HIDEO
IPC分类号： G01N21/39 , H01S3/00 , H01S3/08 , H01S3/101 , H01S3/105 , H01S3/106 , H01S3/139 , H01S5/0683 , H01S5/14 , H01S5/40

35. 发明专利

JPH0316562B2 失效
公开(公告)号：JPH0316562B2
公开(公告)日：1991-03-05
申请号：JP16450083
申请日：1983-09-07
申请人： TOKYO GAS CO LTD
发明人： HATSUTORI TATSUO , TOKUMOTO TSUNENORI , TANAKA HIROAKI
IPC分类号： F23K5/00 , F17D1/04

36. 发明专利

JPH01126856A COMMUNICATION METHOD 失效
公开(公告)号：JPH01126856A
公开(公告)日：1989-05-18
申请号：JP28637987
申请日：1987-11-11
申请人： TOKYO GAS CO LTD
发明人： TANAKA HIROAKI , ITAKURA NORIYUKI , NAKAE HIROSHI
IPC分类号： H04L27/26
摘要： PURPOSE:To attain information transmission with high reliability by sending a signal series comprising the arrangement of plural signals or combined signals in a prescribed order, checking the received signal series and checking whether or not the kind of the signal constituting it or the kind and order is a prescribed kind or order. CONSTITUTION:A communication equipment consists of a master station 1, a slave station 2 and a transmission line 3 and n-kind of signals with different frequency are used and r-set of signals among them constitute combination signals to apply the communication by the methods of nCr kinds. PIural different signals or signal series comprising the arrangement of combined signals in a prescribed order are sent and the received signal series is checked as to whether the kind of the signals constituting the series, kinds of combined signals and the transmission order of the signals are prescribed kinds. Thus, in the transmission of nCr information, the reliability is improved.

37. 发明专利

JPS63172072A BATTERY VOLTAGE MONITORING UNIT FOR GAS CUT-OFF DEVICE 失效
公开(公告)号：JPS63172072A
公开(公告)日：1988-07-15
申请号：JP31107286
申请日：1986-12-29
申请人： MATSUSHITA ELECTRIC IND CO LTD , TOKYO GAS CO LTD
发明人： YAMAMOTO MASAHIKO , IWABUCHI HIROO , SAKA TATSUO , UNO TAKASHI , TANAKA HIROAKI , RACHI TAKAYOSHI , YAMAZAKI YOSHIKI
IPC分类号： F16K31/02 , F17D5/06 , G01R31/36
摘要： PURPOSE:To operate a cut-off valve when a voltage is lowered below a defined value and notify a gas enterprise center of information on battery voltage drop utilizing a telephone circuit by detecting the battery voltage of a gas cut-off device. CONSTITUTION:The battery voltage of a gas cut-off device is detected by a battery voltage detecting pert 1, whether the voltage is below a defined value or not is judged by a voltage judging part 2 and, when below the defined value, a battery voltage drop signal is outputted. A cut-off control part 3 receives the battery voltage drop signal and operates a cut-off valve 6. At the same time, the battery voltage drop signal is formed into a defined telegraphic message by a transmission interface part 4 and sent out to a telephone circuit 5 to be transmitted to a gas enterprise center. Thereby, the gas enterprise center can be instantly notified of information on battery voltage drop, and can take a countermeasure rapidly, securing safety.

38. 发明专利

JPS61296287A TRANSMITTING AND RECEIVING ANTENNA SEPARATION TYPE UNDERGROUND SEARCHING RADAR 失效
公开(公告)号：JPS61296287A
公开(公告)日：1986-12-27
申请号：JP13996485
申请日：1985-06-25
申请人： TOKYO GAS CO LTD
发明人： TANAKA HIROAKI , MATSUURA MASAYUKI , FURUSAWA HAJIME
IPC分类号： G01S7/02 , G01S7/03 , G01S13/88 , H01Q17/00
摘要： PURPOSE:To facilitate the discrimination of a reflected wave, by respectively covering transmitting and receiving antennae with a metallic shield case and electrically coupling the same with a shield case and eliminating the superposition of the reflected wave from an objective target and an unnecessary radio wave. CONSTITUTION:Transmitting and receiving antennae 1, 2 are respectively separately covered with metal shield cases 3, 4 which have ferrite radio wave absorbing bodies 7, 8 for preventing inner surface reflection respectively adhered to the insides thereof and the side surfaces of the outside metal plates 5, 6 of both shield cases 3, 4 are contacted to electrically connect said shield cases 3, 4. Therefore, the direct wave from the transmitting antenna 1, the reflected wave from the surface of the ground or an external radio wave is absorbed by the shield cases 3, 4 to be prevented from entering the receiving antenna 2. By this method, the reflected wave from an objective target and an unnecessary radio wave are not superposed on each other and the discrimination of the reflected wave from the objective target becomes easy.

39. 发明专利

JPS61178622A OPTICAL FIBER SPECTROPHOTOMETRY 失效
公开(公告)号：JPS61178622A
公开(公告)日：1986-08-11
申请号：JP1872485
申请日：1985-02-04
申请人： TOKYO GAS CO LTD
发明人： TANAKA HIROAKI , UEKI TAKASHI , TAI HIDEO , YOSHINO TOSHIHIKO
IPC分类号： G01J3/02 , G01J3/42 , G01N21/27 , G01N21/55 , G01N21/552
摘要： PURPOSE:To perform the spectral diffraction of a gaseous molecule, by a small apparatus constituted so that the specific wavelength component of light incident to an optical fiber is attenuated by the absorption of an evanescent wave by a gaseous molecule. CONSTITUTION:A detection part 21a is provided to a part of the optical fiber 21 connected to a white light source 20 and a spectroscope 22 for analyzing the spectrum of light passing through the detection part 21a and a signal processing circuit 23 for processing the output of said spectroscope 22 are mounted to said fiber 21. when white light of the white light source 20 having light intensity almost uniform over a wide wavelength region is sent to the optical fiber 21, an evanescent wave appears in the open air at the detection part 21a and partially absorbed with gas present at an observation point B. As a result, the spectral characteristics of optical output detected by the spectroscope has a min. value at a wavelength, for example, lambda1. The concn. of gas can be detected according to a differential method of the absorbed light component and that of a wavelength not absorbed with the gas by the circuit.

40. 发明专利

JPS60216256A DETECTION OF PIPE JOINT POSITION 失效
公开(公告)号：JPS60216256A
公开(公告)日：1985-10-29
申请号：JP7329784
申请日：1984-04-12
申请人： TOKYO GAS CO LTD
发明人： TANAKA HIROAKI , MATSUURA MASAYUKI , ITAKURA NORIYUKI , TAKAHASHI SHIGERU
IPC分类号： G01N27/72 , F16L55/18 , G01N27/82
摘要： PURPOSE:To certainly detect a joint position even by inexpensive small constitution, by providing a pair of coils to the front and rear parts of a substrate in the longitudinal direction and moving both coils through a pipe by the substrate to compare the change in the inductances of said coils. CONSTITUTION:A pair of coils 4, 4' are provided to the front and rear parts of a substrate 2 constituted so as to be freely moved along the inside of a pipe 1 in the longitudinal direction on the same axis as the pipe 1. The lead wires 6, 6' of the coils 4, 4' are connected to a detection apparatus 7 for comparing inductances of a pair of the coils or the change amounts corresponding to said inductances while a display part (not shown in the drawing) and a comparison part (not shown in the drawing) are provided to the detection apparatus 7. By this mechanism, constitution can be miniaturized extremely inexpensively and made easy in operation and a joint position can be detected certainly.

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