WO2020012647A1 - Dispositif de refroidissement d'unité de capteur pour dispositif de détection pour équipement de circulation et procédé de refroidissement d'unité de capteur - Google Patents

Dispositif de refroidissement d'unité de capteur pour dispositif de détection pour équipement de circulation et procédé de refroidissement d'unité de capteur Download PDF

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Publication number
WO2020012647A1
WO2020012647A1 PCT/JP2018/026544 JP2018026544W WO2020012647A1 WO 2020012647 A1 WO2020012647 A1 WO 2020012647A1 JP 2018026544 W JP2018026544 W JP 2018026544W WO 2020012647 A1 WO2020012647 A1 WO 2020012647A1
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WO
WIPO (PCT)
Prior art keywords
cooling
sensor unit
connection mechanism
case
traffic
Prior art date
Application number
PCT/JP2018/026544
Other languages
English (en)
Japanese (ja)
Inventor
正樹 荒木
淳 大曽根
宏幸 神田
敬伸 浜岡
崇弘 大黒
Original Assignee
株式会社日立ハイテクファインシステムズ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社日立ハイテクファインシステムズ filed Critical 株式会社日立ハイテクファインシステムズ
Priority to JP2020529956A priority Critical patent/JP7026229B2/ja
Priority to PCT/JP2018/026544 priority patent/WO2020012647A1/fr
Priority to TW108124658A priority patent/TWI733139B/zh
Publication of WO2020012647A1 publication Critical patent/WO2020012647A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/28—Manufacturing or repairing trolley lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/30—Power rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/08—Measuring installations for surveying permanent way
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant

Definitions

  • the present invention relates to a sensor unit cooling device and a sensor unit cooling method for an inspection device for a traffic route facility for measuring the shape, position, and the like of the traffic route facility.
  • the traffic route equipment refers to equipment that forms a traffic route of a transportation facility.
  • railroad tracks are provided with transportation facilities such as rails (tracks) on which vehicles travel, overhead lines for power supply, and third rails (third rails).
  • transportation facilities such as rails (tracks) on which vehicles travel, overhead lines for power supply, and third rails (third rails).
  • Patent Literature 1 discloses a technique of acquiring profile data of a track using a two-dimensional sensor.
  • the sensor unit including the sensor of the inspection equipment of the traffic equipment is attached to the outer surface of the inspection vehicle and moves with the inspection vehicle.
  • a sensor unit is installed on a truck under the floor of an inspection vehicle. For this reason, the sensor unit receives a large vibration when the inspection vehicle travels, and it is necessary to reduce the influence of the vibration when the inspection vehicle travels by some method.
  • the sensor generates heat by itself during operation, but a large acceleration is applied due to vibrations of the inspection vehicle when it travels, so that a fan for air cooling cannot be installed.
  • the sensor unit since the sensor unit is attached to the outer surface of the inspection vehicle, it is affected by the surrounding environment where the track is laid, for example, the sensor unit of the inspection device used in high-temperature regions such as the Middle East and Southeast Asia, It is required to operate normally in a high temperature environment of 50 ° C. or higher. However, many sensors are not designed to operate in such a high-temperature environment, and require a cooling structure for the sensor unit including the sensor.
  • An object of the present invention is to provide a cooling structure of a sensor unit of a traffic path equipment inspection device, which is capable of absorbing vibrations of an inspection vehicle during traveling and having a cooling mechanism.
  • a sensor unit cooling device for a traffic equipment inspection device includes a cooling case for housing a sensor unit including a sensor of a traffic equipment inspection device, a cooling element for cooling the sensor unit, and a cooling case. Having an elastic body in between, a connection mechanism for connecting the cooling case and the cooling element, and a closed case that is installed in the inspection vehicle of the traffic path equipment, and seals the cooling case, the cooling element, and the connection mechanism,
  • the connection mechanism conducts the heat of the sensor unit from the cooling case to the cooling element while absorbing the vibration of the inspection vehicle during traveling by the elastic body so as not to be transmitted to the cooling case, and the sealed container transfers the heat of the cooling element. It is characterized by conduction and emission to the outside.
  • the method for cooling a sensor unit of a traffic equipment inspection device includes the steps of: storing a sensor unit including a sensor of the traffic equipment inspection device in a cooling case; and cooling the cooling case and the cooling element for cooling the sensor unit.
  • the cooling case, the cooling element, and the connection mechanism are hermetically sealed in an airtight container, and the airtight container is installed on the inspection vehicle of the traffic path equipment.
  • the vibration of the inspection vehicle from traveling to the cooling case and the cooling element
  • the vibration of the inspection vehicle during traveling is absorbed by the elastic body of the connection mechanism, and the heat of the sensor unit is transferred from the cooling case to the connection mechanism.
  • the heat of the cooling element is conducted to the closed vessel and released from the closed vessel to the outside.
  • the cooling case and the cooling element for cooling the sensor unit are connected between the cooling case and the cooling case by the connection mechanism having an elastic body, vibrations of the inspection vehicle during traveling are absorbed by the elastic body of the connection mechanism. Then, the heat of the sensor unit is transmitted from the cooling case to the cooling element via the connection mechanism, and the heat of the cooling element is transmitted to the closed container and released from the closed container to the outside.
  • the cooling structure of the sensor unit which can absorb the vibration of the sensor unit and has a cooling mechanism, is provided.
  • the sensor unit cooling device of the traffic route inspection device according to the present invention is characterized in that the cooling element comprises a Peltier element.
  • the sensor unit cooling method of the traffic equipment inspection device according to the present invention is characterized in that a Peltier element is used as the cooling element.
  • the sensor unit cooling device of the traffic path equipment inspection device is characterized by including a heat insulating material provided between the cooling case and the closed container.
  • the method for cooling the sensor unit of the inspection device for traffic path equipment according to the present invention is characterized in that a heat insulating material is provided between the cooling case and the closed container.
  • the cooling element transfers the amount of heat generated from the sensor unit to the closed container via the cooling case, and also adds the amount of heat generated by the operation of the cooling element itself, and releases the total amount of heat from the closed container to the outside. At that time, the temperature of the closed container is higher than that of the cooling case.
  • the heat insulating material can prevent the heat transmitted to the closed container from returning to the cooling case, and the heat insulating material is a cushioning material or It also plays a role as a vibration damper and improves vibration resistance.
  • the sensor unit cooling device of the inspection device for traffic path equipment according to the present invention is characterized in that the cooling case and the connection mechanism have comb-shaped joints that mesh with each other.
  • the method for cooling the sensor unit of the inspection device for traffic path equipment according to the present invention is characterized in that the cooling case and the connection mechanism are provided with comb-shaped joints that mesh with each other. By providing the comb-shaped joints, the contact area between the cooling case and the connection mechanism is increased, and heat conduction from the cooling case to the connection mechanism is promoted.
  • a high-viscosity, high-thermal-conductivity grease having a high thermal conductivity and a damper effect against vibration is interposed at the intermeshing comb-tooth-shaped joint, thereby improving both the vibration suppressing effect and the high thermal-conductivity effect.
  • the sensor unit cooling device of the traffic equipment inspection device of the present invention is characterized in that the connection mechanism has a plurality of elastic bodies in at least one of the length direction and the width direction.
  • the sensor unit cooling method of the traffic path equipment inspection device of the present invention is characterized in that a plurality of elastic bodies are provided in at least one of the length direction and the width direction of the connection mechanism. Due to the elastic body provided in the length direction or width direction, due to vibration during the running of the inspection vehicle, distortion and dimensional variation due to thermal expansion of the cooling element, and dimensional tolerance of the sealed container, cooling element, connection mechanism The dimensional fluctuation of the gap between the joints is absorbed in a well-balanced manner.
  • a cooling structure for a sensor unit of a traffic path equipment inspection device which can absorb vibrations of the inspection vehicle during traveling and has a cooling mechanism.
  • the size of the device can be reduced. Further, distortion and dimensional variation due to thermal expansion of the Peltier element can be absorbed by the elastic body of the connection mechanism.
  • the contact area between the cooling case and the connection mechanism is increased, and heat conduction from the cooling case to the connection mechanism is promoted.
  • the heat insulating material also plays a role as a cushioning material or a vibration damping material, and can improve vibration resistance.
  • connection mechanism by providing a plurality of elastic bodies in at least one of the length direction and the width direction of the connection mechanism, vibrations during running of the inspection vehicle, distortion and dimensional variation due to thermal expansion of the cooling element, and sealing. Variations in the size of the gap between the joints due to dimensional tolerances of the container, the cooling element, and the connection mechanism can be absorbed in a well-balanced manner.
  • FIG. 1 is a perspective view of a connection mechanism according to an embodiment of the present invention. It is a partial section side view showing a sensor unit cooling device by another embodiment of the present invention.
  • FIG. 11 is a perspective view of a connection mechanism according to another embodiment of the present invention.
  • FIG. 1 is a diagram showing a schematic configuration of a traffic equipment inspection device according to an embodiment of the present invention.
  • This embodiment shows an example of a measuring device for measuring the shape, position, and the like of a third rail for power supply laid on a railway track.
  • the inspection device 100 includes a sensor unit 10, a control device 20, a distance pulse generator 23, and a processing device 30.
  • the sensor unit 10 is installed under the floor of the inspection vehicle.
  • the control device 20, the distance pulse generator 23, and the processing device 30 are mounted on an inspection vehicle.
  • the sensor unit 10 includes a laser light source 11, a cylindrical lens 12, a condenser lens 13, and a sensor 14.
  • the laser light source 11 includes, for example, a laser diode or the like, and generates a laser beam.
  • the laser beam generated from the laser light source 11 is diffused by the cylindrical lens 12 and emitted from the sensor unit 10.
  • FIG. 2 is a diagram for explaining the operation of the sensor unit.
  • a third rail 3 for power supply is laid at a predetermined height on one side of a rail 2 laid on a sleeper 1.
  • a collector shoe (current collecting shoe) for current collection (not shown) is attached to the side of the truck under the floor of the inspection vehicle 5 and the business vehicle, and the collector shoe contacts the energized third rail 3 by Electricity is supplied to the inspection vehicle 5 and the business vehicle.
  • a cover 4 is installed near the third rail 3 near the third rail 3.
  • the sensor unit 10 is housed in the sensor unit cooling device 40 and installed on a truck under the floor of the inspection vehicle 5.
  • the laser light emitted from the sensor unit 10 is applied to the third rail 3.
  • the irradiated laser light is scattered by the third rail 3, and scattered light is generated.
  • the laser light scattered by the third rail is condensed by the condenser lens 13 and received by the light receiving surface of the sensor 14.
  • the sensor 14 includes, for example, a CCD line sensor and outputs an image signal corresponding to the intensity of the received scattered light.
  • FIG. 3 is a diagram showing an example of the third rail.
  • the main body of the third rail 3 is made of, for example, a metal having good electric conductivity such as aluminum.
  • Protective plates 3a and 3b made of stainless steel are attached to the upper or lower contact surface of the third rail 3 where the collector shoe contacts, thereby preventing the contact surface from being worn.
  • the control device 20 includes a control circuit 21 and a memory 22.
  • the distance pulse generator 23 generates a distance pulse indicating position information of the inspection vehicle in the traveling direction every time the inspection vehicle travels a predetermined distance.
  • the control circuit 21 collects the image signal output from the sensor 14 together with the distance pulse generated from the distance pulse generator 23 and stores the image signal in the memory 22.
  • the processing device 30 is, for example, a personal computer (PC) or the like, and includes a CPU 31, a memory 32, and an arithmetic circuit 33.
  • the distance pulse and the image signal stored in the memory 22 of the control device 20 are transferred to the memory 32.
  • the CPU 31 determines, from the distance pulse stored in the memory 32, the position of the image signal stored in the memory 32 in the traveling direction of the inspection vehicle, and converts each image signal into profile data of the position. Is stored in the memory 32.
  • the arithmetic circuit 33 performs predetermined processing on the profile data stored in the memory 32 under the control of the CPU 31 to measure the shape, position, and the like of the third rail 3.
  • FIG. 4 is a partially sectional side view showing a sensor unit cooling device according to an embodiment of the present invention.
  • the sensor unit cooling device 40 includes a closed container 41, a transparent window 42, a cooling case 43, a cooling element 44, a connection mechanism 45, an insulator 47, and a heat insulating material 48.
  • the closed container 41 has a substantially rectangular parallelepiped box shape and is made of, for example, a material having high thermal conductivity such as aluminum.
  • An opening is provided on one surface of the sealed container 41, and a transparent window 42 made of glass, plastic, or the like is attached to the opening.
  • the laser light from the sensor unit 10 passes through the transparent window 42 and irradiates the third rail 3, and the scattered light from the third rail 3 passes through the transparent window 42 and is received by the sensor 14 of the sensor unit 10. You.
  • the sensor unit 10 is housed in the cooling case 43.
  • the cooling case 43 is made of, for example, a material having a high thermal conductivity, such as aluminum, and is provided with a small gap with respect to the insulator 47.
  • a comb-shaped joint 43a is provided on the lower surface of the cooling case 43. Is provided.
  • a cooling element 44 is attached to the bottom surface inside the sealed container 41.
  • the cooling element 44 is made of, for example, a Peltier element, and is supplied with current from a power supply (not shown).
  • a connection mechanism 45 made of a material having high thermal conductivity such as aluminum is attached.
  • a comb-like joint 45a is provided on the upper surface of the connection mechanism 45.
  • the gap between the joining portion 43a of the cooling case 43 and the joining portion 45a of the connection mechanism 45 is filled with high thermal conductive grease having high thermal conductivity and high viscosity, thereby having a damper effect of improving vibration resistance. And the heat transfer performance can be improved.
  • FIG. 5 is a perspective view of the connection mechanism according to the embodiment of the present invention.
  • a part of the comb teeth of the joining portion 45a of the connection mechanism 45 is removed, and a part of the comb teeth of the joining portion 43a of the cooling case 43 is also removed.
  • the elastic body 46 is attached to the space from which a part of the comb teeth has been removed.
  • the connection mechanism 45 of the embodiment shown in FIG. 5 the dimension in the oblique direction in FIG. 5 (the depth direction in FIG. 4) and the dimension in the lateral direction in FIG.
  • One elastic body 46 is installed in the center of the drawing.
  • one elastic body 46 and the heat insulating material 48 installed at the center are provided with vibrations during running of the inspection vehicle 5, distortions and dimensional variations due to thermal expansion of the cooling element 44, and a closed container. 41, the cooling element 44 and the connecting mechanism 45 absorb the dimensional variation of the gap between the joints 43a and 45a due to the dimensional tolerance in a well-balanced manner. Due to the elastic body 46 of the connection mechanism 45 and the heat insulating material 48, large vibration during traveling is not transmitted to the cooling case 43 that houses the cooling unit and the cooling element 44, and the cooling case 43 and the cooling element 44 are protected from vibration. And can conduct heat.
  • a wall is formed around the cooling element 44 by the insulator 47.
  • the insulator 47 is made of, for example, bakelite.
  • a space between the cooling case 43 and the closed container 41 is filled with a heat insulating material 48.
  • the heat insulating material 48 is made of, for example, urethane.
  • the sensor unit 10 including the sensor 14 of the inspection device 100 is housed in the cooling case 43, and the cooling case 43 and the cooling element 44 for cooling the sensor unit are provided.
  • the cooling case 43, the cooling element 44, and the connection mechanism 45 are sealed in a closed container 41, and the closed container 41 is installed in the inspection vehicle 5 when the inspection vehicle 5 is running. While absorbing the vibration by the elastic body 46 of the connection mechanism 45, the heat of the sensor unit 10 is transmitted from the cooling case 43 to the cooling element 44 via the connection mechanism 45, and the heat of the cooling element 44 is transferred to the closed container 41.
  • the vibration during the traveling of the inspection vehicle 5 can be absorbed, and the sensor unit of the inspection device 100 for the traffic equipment equipped with the cooling mechanism. It is possible to provide a cooling structure 10.
  • the size of the device can be reduced. Further, distortion and dimensional variation due to thermal expansion of the Peltier element can be absorbed by the elastic body 46 of the connection mechanism 45.
  • the contact area between the cooling case 43 and the connection mechanism 45 is increased by providing the comb-shaped joints 43a and 45a that mesh with each other in the cooling case 43 and the connection mechanism 45, so that the cooling case 43 The conduction of heat to the connection mechanism 45 can be promoted.
  • FIG. 6 is a partial sectional side view showing a sensor unit cooling device according to another embodiment of the present invention.
  • FIG. 7 is a perspective view of a connection mechanism according to another embodiment of the present invention.
  • the connection mechanism 45 of the embodiment shown in FIG. 7 is for the case where the dimension of the cooling element 44 is large in the depth direction of FIG. 6, and the dimension in the diagonal direction of FIG. 7 (the depth direction of FIG. 6).
  • a plurality of elastic bodies 46 are attached to the bottom surface of the comb teeth of the joint 45 a of the connection mechanism 45 because the elastic body 46 is larger than the horizontal direction in the drawing. Note that the number of the elastic bodies 46 is not limited to the example of FIG.
  • a plurality of elastic bodies 46 may be attached to the upper surface of the comb teeth of the joint 45a of the connection mechanism 45.
  • a plurality of elastic bodies 46 are provided in the oblique direction in the drawing of FIG. 7 (the depth direction of the drawing in FIG. 6), whereby the vibration and the distortion due to the vibration of the inspection vehicle 5 during traveling and the thermal expansion of the cooling element 44 are provided. And the dimensional variation of the gap between the joints 43a and 45a due to dimensional tolerances of the closed container 41, the cooling element 44, and the connection mechanism 45 are absorbed in a well-balanced manner.
  • connection mechanism 45 increases the size in the horizontal direction in FIG. It may be installed horizontally in the drawing of FIG.
  • connection mechanism 45 By providing a plurality of elastic bodies 46 in at least one of the length direction and the width direction of the connection mechanism 45, vibrations during running of the inspection vehicle 5 and distortions and dimensions due to thermal expansion of the cooling element 44 are reduced. Variations and dimensional variations in the gap between the joints 43a and 45a due to dimensional tolerances of the closed container 41, the cooling element 44, and the connection mechanism 45 can be absorbed in a well-balanced manner.
  • the elastic body of the connection mechanism used in the present invention is not limited to a coil spring but may be any as long as it has elasticity and can absorb vibration.
  • the present invention can be applied to a measuring device for measuring the shape, position, and the like of a rail (track) of a railway track, and a measuring device for various other types of traffic path facilities in which vibration and high temperature are problems. .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne une structure de refroidissement d'unité de capteur qui est destinée à un dispositif de détection pour un équipement de circulation et qui est capable d'absorber des vibrations qui se produisent pendant le déplacement d'un véhicule de détection et qui est pourvue d'un mécanisme de refroidissement. Le présent dispositif de refroidissement d'unité de capteur (40) pour un dispositif de détection (100) pour un équipement de circulation comporte : un boîtier de refroidissement (43) qui stocke une unité de capteur (10) comprenant un capteur (14) ; un élément de refroidissement (44) pour refroidir l'unité de capteur ; un mécanisme de connexion (45) qui a un corps élastique (46) entre le mécanisme de connexion (45) et le boîtier de refroidissement (43) et relie le boîtier de refroidissement (43) et l'élément de refroidissement (44) ; et un récipient d'étanchéité (41) qui est installé sur un véhicule de détection (5) pour un équipement de circulation et scelle le boîtier de refroidissement (43), l'élément de refroidissement (44), et le mécanisme de connexion (45). Le mécanisme de connexion (45) conduit la chaleur de l'unité de capteur (10) depuis le boîtier de refroidissement (43) jusqu'à l'élément de refroidissement (44) tout en absorbant les vibrations qui se produisent pendant la course du véhicule de détection (5) au moyen du corps élastique (46). Le récipient d'étanchéité (41) conduit la chaleur de l'élément de refroidissement (44) et évacue la chaleur vers l'extérieur.
PCT/JP2018/026544 2018-07-13 2018-07-13 Dispositif de refroidissement d'unité de capteur pour dispositif de détection pour équipement de circulation et procédé de refroidissement d'unité de capteur WO2020012647A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2020529956A JP7026229B2 (ja) 2018-07-13 2018-07-13 交通路設備の検測装置のセンサーユニット冷却装置及びセンサーユニット冷却方法
PCT/JP2018/026544 WO2020012647A1 (fr) 2018-07-13 2018-07-13 Dispositif de refroidissement d'unité de capteur pour dispositif de détection pour équipement de circulation et procédé de refroidissement d'unité de capteur
TW108124658A TWI733139B (zh) 2018-07-13 2019-07-12 運輸設備的檢測裝置的感應組件冷卻裝置及感應組件冷卻方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/026544 WO2020012647A1 (fr) 2018-07-13 2018-07-13 Dispositif de refroidissement d'unité de capteur pour dispositif de détection pour équipement de circulation et procédé de refroidissement d'unité de capteur

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WO2020012647A1 true WO2020012647A1 (fr) 2020-01-16

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PCT/JP2018/026544 WO2020012647A1 (fr) 2018-07-13 2018-07-13 Dispositif de refroidissement d'unité de capteur pour dispositif de détection pour équipement de circulation et procédé de refroidissement d'unité de capteur

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JP (1) JP7026229B2 (fr)
TW (1) TWI733139B (fr)
WO (1) WO2020012647A1 (fr)

Citations (3)

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US20100155543A1 (en) * 2004-12-06 2010-06-24 Peter Hesser Train Wheel Bearing Temperature Detection
JP2015175611A (ja) * 2014-03-13 2015-10-05 株式会社日立ハイテクノロジーズ 距離測定装置および距離測定システム
JP2015175735A (ja) * 2014-03-14 2015-10-05 株式会社日立ハイテクファインシステムズ レール変位量検出器及びレール変位量検出方法

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US6070414A (en) * 1998-04-03 2000-06-06 Raytheon Company Cryogenic cooler with mechanically-flexible thermal interface
CN104843190B (zh) * 2015-04-18 2016-10-12 中国计量学院 用于飞行器的半导体智能降温装置与降温控制方法
JP6597069B2 (ja) * 2015-09-02 2019-10-30 セイコーエプソン株式会社 センサーユニット、電子機器、および移動体
CN107430003B (zh) 2015-12-03 2020-11-17 深圳市大疆创新科技有限公司 用于部件保护的系统和方法
CN108132011A (zh) * 2017-12-20 2018-06-08 江苏精微特电子股份有限公司 一种防振耐高温结构位移传感器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100155543A1 (en) * 2004-12-06 2010-06-24 Peter Hesser Train Wheel Bearing Temperature Detection
JP2015175611A (ja) * 2014-03-13 2015-10-05 株式会社日立ハイテクノロジーズ 距離測定装置および距離測定システム
JP2015175735A (ja) * 2014-03-14 2015-10-05 株式会社日立ハイテクファインシステムズ レール変位量検出器及びレール変位量検出方法

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JPWO2020012647A1 (ja) 2021-07-15
TW202005845A (zh) 2020-02-01
JP7026229B2 (ja) 2022-02-25
TWI733139B (zh) 2021-07-11

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