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1. 发明专利

JPS62297777A POSITION DETECTING METHOD FOR BURIED CONDUCTOR 失效
公开(公告)号：JPS62297777A
公开(公告)日：1987-12-24
申请号：JP14174186
申请日：1986-06-17
申请人： NEC CORP , TOKYO GAS CO LTD
发明人： MIURA TOKUNORI , SAITO KIMIMASA , WASA YASUHIRO , YAMAGUCHI KENICHI
IPC分类号： G01V3/10
摘要： PURPOSE:To detect the position of a buried conductor in a short time by an easy procedure by measuring the intensity and direction of a magnetic field at >=3 points where relative positions on a plane are clear, and calculating the burying position from the optimum value of a constant of a theoretical expression of the magnetic field intensity calculated by using said measured values. CONSTITUTION:A current is supplied to the buried conductor 1 and a magnetic field produced by the current is measured by using a three-axial fluxmeter. Then, the two axes of the fluxmeter are placed on an optional plane and the fluxmeter is moved in the direction of an (x)-axia direction by (n) times (n>=3) by every specific distance to measure three axial components of a magnetic field at respective points Xn, thereby obtaining (n) measurement results (Xn HnX, Hny, Hnz). The intensity Hn and direction theta of the magnetic field at each measurement point Xn are found from a prescribed expression by using the measurement results. Then, those measured values are used to calculate the optimum value of the constant of a theoretical expression of the magnetic field intensity and the burying position of the buried conductor 1 is calculated from the prescribed expression by using the constant value.

2. 发明专利

JPS62297776A POSITION DETECTING METHOD FOR BURIED CONDUCTOR 失效
公开(公告)号：JPS62297776A
公开(公告)日：1987-12-24
申请号：JP14174086
申请日：1986-06-17
申请人： NEC CORP , TOKYO GAS CO LTD
发明人： MIURA TOKUNORI , SAITO KIMIMASA , WASA YASUHIRO , YAMAGUCHI KENICHI
IPC分类号： G01B7/00 , G01R33/02 , G01V3/08
摘要： PURPOSE:To improve the detection accuracy of a burying position and to evaluate the reliability of the detection result by obtaining plural data on a line of intersection of two planes crossing a magnetic field at right angles and calculating their mean value with respect to all combinations of two points on both sides of the rack center of magnetic sensors fixed both ends of a rack. CONSTITUTION:Plural magnetic sensors which detect a magnetic field direction are fixed on substantially the same plane nearby both ends of the long rack 3, which this rack 3 is installed on the ground surface closely right above a buried conductor for a method which supplies a current to the buried conductor 1 to find its position. Then, the magnetic field direction is measured at plural positions on the ground surface and data on lines of intersection of two planes crossing the magnetic field at right angles are found with respect to all combinations of two points on both sides of the rack center of the magnetic sensors fixed nearby both ends of the rack. Then their mean value is calculated to obtain the measurement position of the burying position with high reliability, and variance in the measurement result (e.g. standard deviation) is found to evaluate the reliability.

3. 发明专利

JPH0270238A CHARGING DEVICE FOR UNMANNED CARRYING CAR 失效
公开(公告)号：JPH0270238A
公开(公告)日：1990-03-09
申请号：JP22283188
申请日：1988-09-05
申请人： NEC CORP
发明人： TAKAHASHI KATSUNORI , MIURA TOKUNORI
IPC分类号： H02J7/04
摘要： PURPOSE:To prevent overcharge and over discharge by starting charging while the terminal voltage of a battery is monitored, and by stopping charging while the charging current is monitored. CONSTITUTION:A battery 2 of a carrying car is charged with a charging power source 1. With a voltage detecting comparator 6 the terminal voltage of the battery 2 and the reference voltage is compared. If the terminal voltage is lower than the reference one, a transistor 11 is conducted through an OR gate 9 and charging is started with a relay 12 ON and a contact 5 closed. Through a resistance 4 the charging current is detected and compared with a set value by a current detecting comparator 7. If it is larger than the set value, the output of an inverter 8 will get to a high level. Even if the terminal voltage of the battery 2 rises, the output of the OR gate remains on the high level and the relay 12 is kept 'ON'. When the charging is finished, the charging current is reduced and the output of the inverter 8 gets to a low level. With the relay 12 OFF the charging is thereby stopped.

4. 发明专利

JPH01295310A GUIDING METHOD FOR CARRIER 失效
公开(公告)号：JPH01295310A
公开(公告)日：1989-11-29
申请号：JP2059088
申请日：1988-01-29
申请人： NEC CORP
发明人： TSUKAGOSHI TSUNEO , MIURA TOKUNORI , SHIMAMOTO SHIGETETSU
IPC分类号： G05D1/02
摘要： PURPOSE:To ensure the effective operation of a system by enabling a carrier got out of its course to set on the course again by itself after moving back by a fixed distance. CONSTITUTION:In a normal stop stage a carrier 1 stops in the direction where the shift value of the carrier body increases if the carrier 1 moves forward as it is as shown by a position P2, i.e., in the outer direction. When the carrier 1 is straightly moved back under such conditions, the carrier 1 reaches again a position P3 set on a course. In this case, the carrier 1 is set back to its steering enable range in most cases as long as the carrier 1 is driven back by a distance (lB+lC) where lB and lC mean a braking distance and a fixed distance respectively. Thus both the shift value and the direction of the carrier body can be corrected by driving forward the carrier 1 by a fixed distance lD at a low speed while steering. Then the carrier 1 reaches a position P4. If the carrier 1 gets out of its course again while the carrier 1 is moving forward at a slow speed, the carrier 1 is set again on its course just by repeating the same operation. As a result, the manual operations are extremely decreased to set back the carrier 1 to its course and the effective system operation is attained. In addition, a fail-safe system is realized with higher reliability.

5. 发明专利

JPS59183387A System for measuring laid depth of submarine conductor 失效
标题翻译：用于测量海底导管深度的系统
公开(公告)号：JPS59183387A
公开(公告)日：1984-10-18
申请号：JP5753483
申请日：1983-04-01
申请人： Nec Corp
发明人： MIURA TOKUNORI
IPC分类号： G01S11/00 , G01V3/06 , G01V3/10 , G01V3/11
CPC分类号： G01V3/06
摘要： PURPOSE:To make it possible to simply measure laid depth by eliminating the influence of earth and sand on the sea bottom, by generating a magnetic field by flowing an AC current through a submarine laid conductor while detecting the direction of said magnetic field by a plurality of magnetic field direction detectors. CONSTITUTION:When an AC current is flowed through a submarine laid conductor 1, an AC magnetic field H is generated and the direction thereof comes to a right angle to the line connecting the conductor 1 and a point O. When the directions of the magnetic field, that is, the angles beta1, beta2 at two points P1, P2 spaced apart a distance x0 to each other are measured, a laid depth r0 can be calculated from a predetermined calculation formula. In an actual apparatus, two magnetic field direction detectors each constituted of magnetic sensor are attached onto a moving stand 3 and drawn by a measuring ship 6 to traverse above the conductor 1. The directions of the magnetic field detected by two detectors 5 are inputted to a signal treating apparatus to measure the laid depth of said conductor 1. By this mechanism, because the angle of the magnetic field is not attenuated by earth and sand, the laid depth can be simply measured without receiving the influence of earth and sand.
摘要翻译：目的：为了通过消除沙土对海底的影响，可以简单地测量铺设深度，通过在检测到磁场的方向多个的同时，通过使交流电流流过潜艇敷设导体而产生磁场的磁场方向检测器。构成：当AC电流流过潜艇敷设导体1时，产生交流磁场H，并且其方向与连接导体1和点O的直线成直角。当磁场方向，即，测量彼此间隔开距离x0的两个点P1，P2处的角度β1，β2，可以从预定的计算公式计算铺设深度r0。在实际的装置中，将由磁传感器构成的两个磁场方向检测器安装在移动支架3上，由测量船6牵引，横越导体1上方。由两个检测器5检测出的磁场方向被输入用于测量所述导体1的铺设深度的信号处理装置。通过这种机制，由于磁场的角度不被沙土和沙子衰减，因此可以简单地测量铺设的深度而不受到砂土的影响。

6. 发明专利

JPH02238505A MAGNETIC SUBSTANCE SENSOR 失效
公开(公告)号：JPH02238505A
公开(公告)日：1990-09-20
申请号：JP6115189
申请日：1989-03-13
申请人： NEC CORP
发明人： MIURA TOKUNORI
IPC分类号： G01V3/10 , G01V3/00 , G01V15/00 , G05D1/02
摘要： PURPOSE:To continuously check the characteristics of a long band-shaped magnetic substance in its lengthwise direction by setting plural sensor coils in the lengthwise direction of a bar exciting coil. CONSTITUTION:A major axis XE of an exciting coil E is turned in the width direction of a band-shaped magnetic substance M, and the sensor coils D1 - D5 are dispersely set in the direction of the axis XE. Then an alternating current is supplied to the coil E for generation of an AC magnetic field. Thus the inductive voltage is produced at each of coils D1 - D5 and changed with approach of the substance M. The changing amounts Vd1 - Vd5 of the inductive voltage of coils D1 - D5 undergo the detection of their maximum values via a means which detects the maximum input of a maximum input voltage detecting circuit, etc. Thus the characteristics of the substance M can be easily and continuously checked just by carrying out the sweep in the lengthwise direction of the substance M with rough position accuracy even though a fixed sweep position is not kept to the width direction of the substance M.

7. 发明专利

JPS6249283A FERRITE PROXIMITY SENSOR 失效
公开(公告)号：JPS6249283A
公开(公告)日：1987-03-03
申请号：JP18912785
申请日：1985-08-28
申请人： NEC CORP , NIPPON SHARYO SEIZO KK
发明人： MIURA TOKUNORI , YAMAUCHI FUMIO , OZAWA KUNIO , YAMASHITA YOICHI
IPC分类号： G01V3/10 , G01V3/00 , G01V15/00 , G05D1/02
摘要： PURPOSE:To enable a ferrite labeled object to be accurately detected without being affected by a change in a magnetic field due to a change in an exciting current by making two detecting coils arranged near an exciting coil have reverse characteristics and taking out a differential output. CONSTITUTION:An exciting coil 11 is so arranged that it generates a high frequency magnetic field by being supplied with an exciting current and gives the magnetic field to space ferrite labeled objects. Two detecting coils 12 and 13 are so provided that the magnetic field of the coil 11 acts thereon and so arranged that a magnetic coupling between the coils 12 and 13 is seldom present and, furthermore, the output voltage of the coils 12 and 13 change in reverse directions when the labeled object approaches. The outputs of the coils 12 and 13 are inputted to a subtracting circuit 37 as DC voltages via diodes 32 and 35 and smoothing capacitors 33 and 36, respectively, and a difference between the outputs of the coils 12 and 13 is obtained. A comparator 40 compares the differential output of the circuit 37 and a reference voltage from a reference voltage circuit comprised of a DC power supply 39 and a potentiometer 38 with each other and detects the approach of the labeled object by whether the difference between the outputs of the coils 12 and 13 exceeds the reference voltage.

8. 发明专利

JPS61133890A Magnetic sensor 失效
标题翻译：磁传感器
公开(公告)号：JPS61133890A
公开(公告)日：1986-06-21
申请号：JP25611284
申请日：1984-12-04
申请人： Nec Corp
发明人： WASA YASUHIRO , MIURA TOKUNORI
IPC分类号： G01V3/10
CPC分类号： G01V3/104
摘要： PURPOSE:To achieve a higher sensitivity of a magnetic sensor with a better directivity thereof, by arranging a conductive plate parallel to the axial direction of an excitation coil for generating an AC magnetic field close thereto. CONSTITUTION:An aluminum conductive plate 11 with the thickness of 2mm is arranged parallel to the axial direction of an excitation coil 1 contacting it or at a position close thereto. When the excitation coil 1 is excited with an oscillator 2 to generate an AC magnetic field, the magnetic field is reflected on the conductive plate 11 and fails to distribute in the area 10 to increase the distribution thereof in the area 9. As a result, any varying voltage is not be detected at all as a magnetic body approaches from the area 10 but done at a larger level with a detection coil 4 and a voltage detector 5 as it approaches from the area 9 thereby enabling a highly accurate detection.
摘要翻译：目的：通过将导电板平行于激励线圈的轴向布置以产生接近其的交流磁场，以获得具有更好方向性的磁传感器的更高灵敏度。构成：厚度为2mm的铝导电板11平行于与其接触的激励线圈1的轴向方向或靠近其的位置。当励磁线圈1被振荡器2激励以产生交流磁场时，磁场被反射在导电板11上，并且不能分布在区域10中以增加其在区域9中的分布。结果，随着磁体从区域10接近但是当检测线圈4和电压检测器5从区域9接近时，以更大的水平进行，从而使得能够进行高精度的检测，完全不会检测到任何变化的电压。

9. 发明专利

JPH0348739A METHOD AND DEVICE FOR INSPECTING TENSILE FORCE OF BELT 失效
公开(公告)号：JPH0348739A
公开(公告)日：1991-03-01
申请号：JP18491289
申请日：1989-07-18
申请人： NEC CORP
发明人： TSUTAOKA TAKANORI , FUJIMOTO ATSUSHI , TAKAHASHI KATSUNORI , MIURA TOKUNORI
IPC分类号： G01L5/10
摘要： PURPOSE:To easily measure the tensile force of the belt with good reproducibility by providing a detection sensor for the excitation vibration of the belt, plural filters which input its signal and outputs levels by bands and a device which compared them and displays the result. CONSTITUTION:The belt 1 is extended between shafts 2 and 3 and further tensed by a pulley 4. A reflecting sheet is stuck on the surface of the belt 1 and a photosensor 5 is arranged closely. Then the belt 1 is flapped with a finger to excite its natural vibration, which is detected by the photosensor 5 and amplified by an amplifier 6; and an FFT analyzer 7 finds the frequency spectrum, from which the primary resonance frequency is measured. The tension of the belt 1 is adjusted with the pulley 4 so that the primary resonance frequency becomes maximum in a found frequency range. Consequently, the tensile force of the belt is easily adjusted with good measurement reproducibility.

10. 发明专利

JPS62113210A GUIDE PATH FOR UNMANNED VEHICLE 失效
公开(公告)号：JPS62113210A
公开(公告)日：1987-05-25
申请号：JP25306085
申请日：1985-11-11
申请人： NEC CORP
发明人： MIURA TOKUNORI
IPC分类号： G05D1/02
摘要： PURPOSE:To easily deal with a change in run course by constituting a marker body which has a rectangular or square surface and incorporates two opposite end sides or an end side and a body to be detected nearby, and installing marker bodies so that object bodies of detection of adjacent marker bodies cross each other at right angles. CONSTITUTION:For example, an unmanned vehicle runs automatically among three stations, which are changed in position possibly. Conventionally, marker bodies 1 are reinstalled or added according to the change of station positions, but marker bodies 1 are laid down entirely to constitute a lattice-shaped guide path. The unmanned vehicle 3 is steered by detecting the quantity and direction of deviation from the guide path by a marker body sensor 4 mounted thereupon to run automatically and the number of passed crossings is counted to confirm the current position on the lattice. Consequently, a change in course is dealt with only by changing a run course instructed to the unmanned vehicle 3 without reinstalling marker bodies 1.

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