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1. 发明专利

JPH08338878A PROBE DEVICE WITH METAL SENSOR 失效
公开(公告)号：JPH08338878A
公开(公告)日：1996-12-24
申请号：JP14467695
申请日：1995-06-12
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KENJI , MORITA KENJI
IPC分类号： G01B7/00 , G01V3/10
摘要： PURPOSE: To prevent a malfunctioning of metal detection in a probe device with a metal sensor detecting such objects as metal and the like by inserting in the ground in the case where temperature in the ground and temperature on the ground are different. CONSTITUTION: A probe device with a metal sensor includes a sensor coil 5 as an element of a resonance circuit in a coil case 4 which is contacted by the tip of a pipe rod provided with a handle, is contacted by a tip cone 3 in the front of the coil case 4 and has inside of the coil 4 a thermistor 18 in series with the sensor coil 5 or a thermistor 18 connected with a synthetic resistor 19 together with the sensor coil 5. In the case where the temperature on the ground and temperature in the ground are different, such as misdetection of a metal existence despite that no metal exists in the vicinity, or a malfunction such as no generation of detection output despite of the existence of metal can be prevented.

2. 发明专利

JPH0835953A PROBE INSTALLATION MECHANISM ULTRASONIC INSPECTION DEVICE OF BUTT WELDING PART 失效
公开(公告)号：JPH0835953A
公开(公告)日：1996-02-06
申请号：JP16934294
申请日：1994-07-21
申请人： TOKYO GAS CO LTD
发明人： TSUGE MUNENORI , SUYAMA KENJI , KOSEKI MASATO
IPC分类号： G01N29/04 , G01N29/24 , G01N29/26 , G01N29/10
摘要： PURPOSE:To expand an inspection range for each stop position and at the same time prevent the running of the probe on the weld reinforcement in a mobile ultrasonic inspection robot for detecting the flaw of a butt welding part on the wall surface of a spherical holder. CONSTITUTION:A probe installation body is provided at an X-Y table provided on a traveling substrate, ultrasonic probe groups A and B are provided left and right outside a non- installation region 21 with a specified width along the center line in traveling direction, the probe groups are constituted of the straddle scanning probe A for detecting the flaw of the butt welding part and the probe B for detecting the tool mark flaw, at the same time each probe can advance toward or retreat from the direction of right angle of the surface of the probe installation body, the straddle scanning probe sets are installed opposingly while holding the non-installation region, at the same time the probe for detecting the tool mark flaw is installed opposingly at a position which is away by a specific distance outside the non-installation region for setting the opposing direction to the flaw-detecting direction, and the probe for detecting the tool mark flaw is installed at a position which is away by a specific distance outside the non-installation region for setting the direction which is parallel to the non-installation region to the flaw-detection direction, thus alternately advancing and retreating the straddle scanning probe and the probe for detecting the tool mark flaw.

3. 发明专利

JPH07229882A MOVING TYPE FLAW DETECTION ROBOT 失效
公开(公告)号：JPH07229882A
公开(公告)日：1995-08-29
申请号：JP2156394
申请日：1994-02-18
申请人： TOKYO GAS CO LTD
发明人： TSUGE MUNENORI , SUYAMA KENJI , KOSEKI MASATO
IPC分类号： G01N29/26 , B25J5/00 , B25J13/08 , B62D57/024
摘要： PURPOSE:To accurately position a robot on a flaw detection surface by providing television cameras having the flaw detection surface in its visual field at a center position and positions before and behind in the moving direction and displaying the cursors corresponding to the positioning reference position of the robot and the before and behind positions in the moving direction of the robot on the respective screens of the center, front and rear cameras. CONSTITUTION:Television cameras 23c, 23f, 23r at the center position and positions before and behind in the moving direction of a robot on the extension of a support shaft 11 and the respective cursors corresponding to the reference position and before and behind positions in the moving direction of the robot are displayed on the respective image setting a flaw detection surface to a visual field of the cameras. By the extension and contraction of an extensible and contractible drive arm 4, the suction of a vacuum cup and the rotation of a running motor 8 and a ball screw 7, an inside frame 2 can be moved by fixing an outside frame 1 or the outside frame 1 can be moved by fixing the inside frame 2 and, by the repetition of this operation, the robot can be moved along the flaw detection surface. Therefore, the positioning of the robot in flaw detection operation can be performed by the images of the flaw detection surfaces of the cameras 23c, 23f, 23r and the respective cross cursors.

4. 发明专利

JPH0755751A NOISE-SUPPRESSING METHOD IN DAMAGE-MONITORING SYSTEM FOR BURIED PIPE 失效
公开(公告)号：JPH0755751A
公开(公告)日：1995-03-03
申请号：JP20323393
申请日：1993-08-17
申请人： TOKYO GAS CO LTD
发明人： HOSOHARA YASUHARU , SUYAMA KENJI
IPC分类号： G01N27/20
摘要： PURPOSE:To enable reliable detection of the damage of a buried pipe caused by an excavating blade of an excavator. CONSTITUTION:In a noise-suppressing method, a passing filter 7 for the frequency of an AC signal for monitoring is connected in parallel to a drainage 6 connected to a buried pipe 2, in a system the AC signal for monitoring impressed on the buried pipe 2 in a transmission part 1 is received in a reception part 3 located apart from the transmission part 1 and the damage of the buried pipe 2 is monitored on the basis of a reception signal. Accordingly, the noise due to the operation of the drainage 6 out of electric noise nixing in the buried pipe 2 can be suppressed, and therefore disadvantages that the fluctuation of a received voltage caused by that noise may be detected falsely as the damage, and that the fluctuation of the received voltage caused by the damage may not be detected, can be prevented.

5. 发明专利

JP2013029582A In-conduit observation tool and in-conduit observation device 有权
标题翻译：内部观察工具和内部观察设备
公开(公告)号：JP2013029582A
公开(公告)日：2013-02-07
申请号：JP2011164250
申请日：2011-07-27
申请人： Tokyo Gas Co Ltd , 東京瓦斯株式会社
发明人： SUYAMA KENJI , ISHIKAWA MOTOMICHI , SASAKI KAZUYA
IPC分类号： G02B23/26 , A61B1/00
摘要： PROBLEM TO BE SOLVED: To provide an in-conduit observation tool which has simple constitution and is easy for a user to handle.SOLUTION: An in-conduit observation tool 1 is attached to a camera 101 for photographing the interior of a conduit, and includes a columnar body part 3 which has an outer peripheral shape centered on a first axis FA, a camera arrangement part 3a which is formed at the body part 3 and on which the camera 101 can be arranged, and a reflection part 7 which is arranged in a photographing direction of the camera 101. While the camera 101 is arranged, the center MC of gravity of both the in-conduit observation tool and the camera 101 is eccentric with the first axis FA, and while the direction from the center of the first axis FA to the center of gravity is aligned in a vertically downward direction on a plane which is perpendicular to the first axis FA and passes the center MC of gravity, the reflection part 7 is configured to reflect light from vertically upward direction to make the light incident on the camera 101.
摘要翻译：要解决的问题：提供具有简单结构并且易于使用者处理的管内观察工具。解决方案：管道内观察工具1安装在照相机101上，用于拍摄导管内部，并且包括具有以第一轴线FA为中心的外周形状的柱状主体部分3，相机配置部分 3a，其形成在身体部分3上并且照相机101可以布置在其上;以及反射部分7，其被布置在照相机101的拍摄方向上。当照相机101被布置时，两者的重心的中心MC 导管内观察工具和照相机101与第一轴FA偏心，并且在从第一轴FA的中心到重心的方向在垂直于垂直于第一轴FA的平面垂直向下的方向上对准第一轴FA并通过重心的中心MC，反射部7被配置为从垂直向上的方向反射光以使光入射到照相机101上。（C）2013，JPO和INPIT

6. 发明专利

JP2002189083A PREVENTION METHOD FOR MISDETECTION OF BURIED PIPE DETECTOR 失效
公开(公告)号：JP2002189083A
公开(公告)日：2002-07-05
申请号：JP2000390836
申请日：2000-12-22
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KENJI , KOMORI MITSUNORI , WAKASA KIYOUSUKE , IMAOKA TAKASHI
IPC分类号： G01V3/08
摘要： PROBLEM TO BE SOLVED: To prevent a misdetection during surveying an embedded pipe position from the ground surface by sending a current of transmission signal to the embedded pipe and detecting the magnetic field generated by the current flowing in the embedded pipe with a receiver on the ground. SOLUTION: An embedded pipe surveying device surveys embedded pipe position by detecting a magnetic field generated by a transmission current f0 sent in the embedded pipe 1 and flowing in the embedded pipe 1 with a receiver (1). By overlapping signals fHz and 2fHz, consisting of two different frequencies from the transmission signal f0 on the transmission signal f0 sent in the embedded pipe, whether in-phase or reversed phase from the transmission signal f0 is determined from the waveform of the magnetic field of the two different frequencies detected with the receiver (2). By differentiating combined wave of the signals fHz and 2fHz of two frequencies which differ from the transmission signal detected with the receiver, whether in-phase or reversed phase from the transmission signal f0 is determined.

7. 发明专利

JP2000156803A TUBE INSIDE OBSERVATION CAMERA DEVICE 失效
公开(公告)号：JP2000156803A
公开(公告)日：2000-06-06
申请号：JP32833798
申请日：1998-11-18
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KENJI , WAKASA KIYOUSUKE
IPC分类号： H04N5/225 , G02B23/24
摘要： PROBLEM TO BE SOLVED: To perform observation with an optimum image all the time by making a remote control part to preset illumination light quantity and focal distance in every tube diameter of a tube to be observed and making preset values selectable with a changeover switch. SOLUTION: A tube kind changeover switch switches jute (steel tube wrapped with jute), galvanization (galvanized steel pipe) and PE (polyethylene tube), and a pipe diameter changeover switch switches switchable pipe diameters 25, 32, 40, 50, 80 and 100 (A). The values of illumination light quantity and focal distance are stored as preset values for every tube diameter in a remote controlling part 10 in accordance with respective types of tubes to be observed, and the preset values are selected in accordance with the positions of the respective changeover switches. That is, appropriate focal distance and illumination light quantity are preliminarily set in accordance with respective diameters, they are stored as the preset values in the part 10 of a device main body 1, each preset value is selected by the pipe diameter switch, and an optical system 7 and a light source 8 for illumination are controlled through a control part 9.

8. 发明专利

JPH08184584A FLAW SIZE MEASURING METHOD IN MOBILE FLAW DETECTION APPARATUS 失效
公开(公告)号：JPH08184584A
公开(公告)日：1996-07-16
申请号：JP32829094
申请日：1994-12-28
申请人： TOKYO GAS CO LTD
发明人： TSUGE MUNENORI , SUYAMA KENJI , KOSEKI MASATO
IPC分类号： G01N29/04 , G01N29/22 , G01N29/44 , G01N29/10
摘要： PURPOSE: To the obtain a flaw size measuring method in which a flaw can be evaluated precisely in an ultrasonic flaw detection or the like. CONSTITUTION: In the mobile flaw detection apparatus, a flaw detection sensor 2 is moved linearly to scan while taking a direction at a right angle to its movement direction as the flaw detection direction, and a flaw 1 is detected. In the mobile flaw detection apparatus, when a signal from the flaw is detected in a movement direction A, a flaw size is estimated by a data group in a proper movement range in the direction, and the flaw size is stored. The, regarding a movement direction B which has been changed by a proper angle from the previous movement direction, an operation which estimates and stores the flaw size in a range corresponding to the previous movement range is repeated until the signal from the flaw cannot be detected, the estimated value group of the flaw size is stored, and a maximum value out of the stored estimated value group is regarded as the measured value of the flaw size.

9. 发明专利

JPH07225191A MOVEMENT-TYPE FLAW DETECTION ROBOT 失效
公开(公告)号：JPH07225191A
公开(公告)日：1995-08-22
申请号：JP1668594
申请日：1994-02-10
申请人： TOKYO GAS CO LTD
发明人： TSUGE MUNENORI , SUYAMA KENJI , KOSEKI MASATO
IPC分类号： G01N21/88 , B05B15/04 , B25J15/06 , B62D57/024 , G01N21/954 , G06T1/00 , G06T7/00
摘要： PURPOSE:To easily specify a flaw detection position without using a precise position storage means by a method wherein a shifter body on which a flaw detection means has been mounted is moved along a flaw defection face, a paint is spouted to the flaw detection position, a mark is put and the position is confirmed by a television in a reinspection. CONSTITUTION:A television camera 11 in which the lower part in the positioning center position of a robot is used as a field of view 10 is installed. In addition, a nozzle 12 which spouts a paint to a part near a flaw detector 8 and a television camera 14 which uses the lower part of the nozzle 12 as a field of view 13 are installed. After the robot has been moved, the flaw detector 8 for a flaw detection device 7 is brought into contact with a flaw detection face 9, and a flaw is detected. Then, the paint is spouted from the nozzle 12 and it is applied to the flaw detection face 9. In a reinspection, the applied position of the paint is detected by using the image of the camera 14, and the state of a flaw position is confirmed. In addition, when the paint is spouted from the nozzle 12, compressed air is spouted from a nozzle 15, and the front of the camera 14 is shielded.

10. 发明专利

JPH0763720A NOISE SUPPRESSION METHOD FOR DAMAGE MONITORING SYSTEM OF BURIED PIPE 失效
公开(公告)号：JPH0763720A
公开(公告)日：1995-03-10
申请号：JP21363393
申请日：1993-08-30
申请人： TOKYO GAS CO LTD
发明人： HOSOHARA YASUHARU , NAGASHIMA SHINGO , SUYAMA KENJI
IPC分类号： G01N27/20
摘要： PURPOSE:To prevent erroneous detection owing to a drop in a pulse-like voltage attributed to a noise by setting a step wave-like time-series signal as reference time series signal to perform a mutual correlation computation between the time-series signal and the time series signal of a receiving voltage. CONSTITUTION:An AC signal A for monitoring is received by a receiving section. A reference time series signal B is made as time series signal of a step wave-like waveform with a duration arranged before and after changes in steps. The step wave is so set that after continuing for 1,000ms at a low level, it shifts rapidly to a high level and continues at the high level for 1,000ms. The time series signal in which the step wave is discretized at a sampling cycle of the signal A is made as the signal B. A mutual correlation computation is performed between the signals A and B to detect a drop in the received voltage attributed to damage to a buried pipe by a correlation value determined. This mutual correlation value is obtained by adding up data at points continued of the signal A and values at points of the signal B. Here. the low level of the signal B is '-1' and the high level is '+1'.

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