WO2023275924A1 - Temperature measurement device and temperature measurement system - Google Patents

Temperature measurement device and temperature measurement system Download PDF

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Publication number
WO2023275924A1
WO2023275924A1 PCT/JP2021/024328 JP2021024328W WO2023275924A1 WO 2023275924 A1 WO2023275924 A1 WO 2023275924A1 JP 2021024328 W JP2021024328 W JP 2021024328W WO 2023275924 A1 WO2023275924 A1 WO 2023275924A1
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Prior art keywords
temperature
temperature sensor
ground
conductive material
measurement
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PCT/JP2021/024328
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French (fr)
Japanese (ja)
Inventor
裕貴 砂山
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太平洋工業株式会社
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Priority to PCT/JP2021/024328 priority Critical patent/WO2023275924A1/en
Priority to JP2023531142A priority patent/JPWO2023275924A1/ja
Publication of WO2023275924A1 publication Critical patent/WO2023275924A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations

Definitions

  • the present disclosure relates to temperature measurement devices and temperature measurement systems.
  • Patent Document 1 discloses a temperature measuring device that measures the temperature of roads.
  • a temperature measurement device disclosed in Patent Document 1 includes a temperature sensor, a control device, and a transmission/reception circuit.
  • a temperature sensor measures the temperature of the road.
  • the controller acquires the measurement result of the temperature sensor.
  • the control device transmits the measurement result of the temperature sensor to the external device from the transmitting/receiving circuit.
  • the temperature of the ground changes gradually depending on factors such as the time of day, sunshine conditions, and vehicle traffic conditions. If the followability of the temperature sensor to the temperature change of the ground is poor, the discrepancy between the temperature of the ground and the measurement result of the temperature sensor increases. That is, the temperature of the ground cannot be measured with high accuracy.
  • a temperature measuring device comprising an installation body configured to be installed on the ground, and a temperature sensor configured to measure the temperature of the ground.
  • the installation body includes a bottom surface that contacts the ground, and a defining surface that defines a storage area that opens to the bottom surface.
  • the temperature sensor is housed in the housing area, and the temperature measuring device further comprises a thermally conductive material having a thermal conductivity higher than that of air. The thermally conductive material is provided between the temperature sensor and the ground.
  • the temperature of the ground is more easily transferred to the temperature sensor than when a space is provided instead of the heat-conducting material.
  • the measured temperature measured by the temperature sensor tends to follow the temperature of the ground. Therefore, the temperature measuring device can accurately measure the temperature of the ground.
  • the thermally conductive material may be provided between the temperature sensor and the defining surface.
  • the temperature measurement device may further include a transmission circuit configured to transmit the measurement result of the temperature sensor to an external device.
  • a second aspect of the present disclosure provides a temperature measurement system including a temperature measurement device and an external device.
  • the temperature measurement device includes an installation body configured to be installed on the ground, and a temperature sensor configured to measure the temperature of the ground.
  • the installation body includes a bottom surface that contacts the ground, and a defining surface that defines a storage area that opens to the bottom surface.
  • the temperature sensor is housed in the housing area.
  • the temperature measurement device further comprises a thermally conductive material having a thermal conductivity higher than that of air, and a transmission circuit configured to transmit the measurement results of the temperature sensor to the external device.
  • the thermally conductive material is provided between the temperature sensor and the ground.
  • the temperature measured by the temperature sensor easily follows the temperature of the ground. Therefore, the temperature measuring device can accurately measure the temperature of the ground.
  • the temperature measurement system may include a plurality of temperature measurement devices, and the external device may include a receiver configured to receive the measurement results of the plurality of temperature measurement devices.
  • the external device comprises a server
  • the receiver comprises a communication device configured to transmit the measurement results to the server
  • the server comprises a database for the measurement results.
  • FIG. 2 is a perspective view of a temperature measurement device included in the temperature measurement system of FIG. 1;
  • FIG. 3 is a cross-sectional view along line 3-3 of FIG. 2 showing the temperature measuring device;
  • FIG. 2 is a schematic configuration diagram of a temperature measurement device included in the temperature measurement system of FIG. 1;
  • 5 is a schematic diagram showing a database stored in the server of FIG. 4;
  • the temperature measurement system 10 includes one or more temperature measurement devices 20, one or more receivers 60, and one or more servers 70.
  • a plurality of temperature measuring devices 20 are arranged along each lane of the road R1.
  • Road R1 is paved.
  • a vehicle V1 passes through the road R1.
  • the road R1 has a road surface RS1.
  • the road surface RS1 which is the ground, is the surface of the paved road R1.
  • the temperature measuring devices 20 are spaced apart from each other.
  • the temperature measurement device 20 includes an installation body 21, a sensor unit 30, and a heat conductive material 51.
  • the installation body 21 is installed on the road surface RS1.
  • the installation body 21 is a road stud.
  • the installation body 21 has a truncated quadrangular pyramid shape.
  • the installation body 21 has a bottom surface 22 , a top surface 23 and four side surfaces 24 .
  • the bottom surface 22 , the top surface 23 and the side surfaces 24 are surfaces of the installation body 21 .
  • a side surface 24 extends between the bottom surface 22 and the top surface 23 .
  • the installation body 21 has a defining surface 25 .
  • the defining plane 25 includes a first defining plane 26 and a second defining plane 27 .
  • a first defining surface 26 is located between the bottom surface 22 and the top surface 23 .
  • a second delimiting surface 27 extends between the bottom surface 22 and the first delimiting surface 26 .
  • the second defining surface 27 is a peripheral wall surface extending from the bottom surface 22 toward the top surface 23 .
  • the second defining surface 27 has, for example, a square tubular shape.
  • the defining surface 25 defines a housing area S1.
  • the accommodation area S1 opens to the bottom surface 22 .
  • the accommodation area S1 is, for example, rectangular.
  • the installation body 21 is made of ABS resin, for example.
  • the sensor unit 30 includes a housing 31, a temperature sensor 34, a control device 35, a transmission circuit 38, a transmission antenna 39, and potting resin 40.
  • the housing 31 accommodates the temperature sensor 34, the control device 35, the transmission circuit 38, and the transmission antenna 39.
  • Housing 31 includes a first wall 32 and a second wall 33 .
  • the first wall 32 is flat.
  • the second wall 33 is a peripheral wall.
  • a second wall 33 extends from the periphery of the first wall 32 .
  • the temperature sensor 34 measures the temperature. Specifically, the temperature sensor 34 outputs a measurement result corresponding to its own temperature.
  • the control device 35 includes a processor 36 and a storage unit 37.
  • the processor 36 include MPU (Micro Processing Unit), CPU (Central Processing Unit), and DSP (Digital Signal Processor).
  • the storage unit 37 includes RAM (Random Access Memory) and ROM (Read Only Memory). Storage unit 37 stores program code or instructions configured to cause processor 36 to perform processes.
  • the control device 35 may be configured by a hardware circuit such as ASIC or FPGA.
  • the processing circuitry, controller 35 may include one or more processors operating according to a computer program, one or more hardware circuits such as ASICs or FPGAs, or a combination thereof.
  • ROM and RAM or computer-readable media include any available media that can be accessed by a general purpose or special purpose computer.
  • the storage unit 37 stores an ID code indicating unique identification information of the corresponding temperature measuring device 20 .
  • the control device 35 generates frames.
  • the control device 35 outputs the generated frame to the transmission circuit 38 .
  • a frame is digital data and is a data string of binary numbers.
  • a frame consists of data in a format defined by the protocol.
  • the frame format includes, for example, preamble, ID code, temperature data, status code, and error detection code.
  • Temperature data is the measurement result of the temperature sensor 34 .
  • the transmission circuit 38 transmits from the transmission antenna 39 a radio signal modulated according to the frame input from the control device 35 .
  • the transmission circuit 38 transmits frames. Thereby, the measurement result of the temperature sensor 34 is transmitted from the transmission circuit 38 .
  • a radio signal is a signal in a predetermined frequency band. Examples of frequency bands include the LF band, MF band, HF band, VHF band, UHF band, and 2.4 GHz band.
  • the housing 31 is filled with potting resin 40 .
  • Urethane resin for example, is used as the potting resin 40 .
  • the sensor unit 30 is housed in the housing area S1.
  • the sensor unit 30 is accommodated in the accommodation area S1 such that the direction in which the second wall 33 extends from the first wall 32 and the direction from the top surface 23 to the bottom surface 22 are the same.
  • the heat-conducting material 51 is filled in the housing area S1.
  • the thermal conductivity of the thermally conductive material 51 is higher than that of air.
  • silicone is used as the thermally conductive material 51 .
  • the thermally conductive material 51 has a first portion 52 and a second portion 53 .
  • the first portion 52 is provided between a virtual plane IS ⁇ b>1 obtained by virtually extending the bottom surface 22 and the sensor unit 30 .
  • the first part 52 is provided so as to be flush with the bottom surface 22 or protrude from the accommodation area S1 to the outside of the accommodation area S1.
  • the first portion 52 is provided between the temperature sensor 34 and the virtual plane IS1.
  • the second portion 53 is provided between the defining surface 25 and the sensor unit 30 .
  • the second parts 53 are provided between the first defining surface 26 and the sensor unit 30 and between the second defining surface 27 and the sensor unit 30, respectively.
  • the second portion 53 is provided between the temperature sensor 34 and the defining surface 25 .
  • Potting resin 40 , housing 31 , and thermally conductive material 51 are located between temperature sensor 34 and defining surface 25 .
  • the temperature measuring device 20 is installed on the road R1 so that the bottom surface 22 is in contact with the road surface RS1.
  • the first portion 52 contacts the road surface RS1.
  • the first portion 52 is located between the sensor unit 30 and the road surface RS1. Therefore, it can be said that the first portion 52 is provided between the temperature sensor 34 and the road surface RS1.
  • the first portion 52 and the potting resin 40 are interposed between the temperature sensor 34 and the road surface RS1.
  • the receiver 60 includes a receiver control device 61, a receiving circuit 64, a receiving antenna 65, and a communication device 66.
  • the receiver control device 61 includes a processor 62 and a storage section 63 .
  • Processors 62 may include, for example, MPUs, CPUs, and DSPs.
  • the storage unit 63 includes ROM and RAM. Storage unit 63 stores program code or instructions configured to cause processor 62 to perform processing.
  • the receiver control device 61 may be configured by a hardware circuit such as ASIC or FPGA.
  • the processing circuitry, receiver controller 61 may include one or more processors operating according to a computer program, one or more hardware circuits such as ASICs or FPGAs, or a combination thereof.
  • ROM and RAM or computer-readable media include any available media that can be accessed by a general purpose or special purpose computer.
  • the receiving antenna 65 receives the radio signal transmitted from each temperature measuring device 20 .
  • the receiving circuit 64 demodulates the radio signal received via the receiving antenna 65 to obtain the data contained in the frame.
  • the receiving circuit 64 outputs data to the receiver control device 61 .
  • the receiver control device 61 acquires the measurement result of the temperature sensor 34 .
  • the receiver 60 receives the measurement result of the temperature sensor 34 by receiving the wireless signal transmitted from the temperature measuring device 20 .
  • the communication device 66 is a network device that includes a communication control unit, ports, etc., and can transmit and receive information through the communication network NW.
  • the communication device 66 is connected to the server 70 via the communication network NW.
  • the receiver 60 is arranged so that it can receive wireless signals from the temperature measuring device 20 .
  • the receiver 60 is attached, for example, to a structure UP1 provided along the road R1. Examples of this type of structure UP1 include guardrails and utility poles. In the example shown in FIG. 1, the receiver 60 is attached to a utility pole.
  • the server 70 has a database DB1.
  • the number of servers 70 may be plural or may be one.
  • the database DB1 is a set of data regarding the measured temperature measured by the temperature measuring device 20 .
  • Receiver 60 and server 70 are external devices.
  • the database DB1 created by the server 70 associates the measured temperature with the measurement time and the measurement position.
  • the measurement time is the time when the temperature sensor 34 measures the temperature of the road surface RS1.
  • a measurement position is a position where each temperature measurement device 20 is provided.
  • the position of each temperature measuring device 20 is represented, for example, by coordinates of a coordinate system representing absolute positions on the earth.
  • a coordinate system of this kind can be, for example, a geographic coordinate system.
  • the position of each temperature measuring device 20 may be specified from the ID code included in the radio signal. To achieve this, information in which the ID code of each temperature measuring device 20 is associated with the coordinates of each temperature measuring device 20 is pre-stored in the server 70 or the receiver 60 . In this case, the receiver 60 or server 70 identifies the location of each temperature measurement device 20 .
  • each temperature measurement device 20 may transmit a radio signal including information indicating the position of each temperature measurement device 20 .
  • the server 70 provides services to users. Services are provided as a cloud. A cloud is one form of computer usage that accumulates data and provides services. As a service, for example, provision of the database DB1 can be mentioned.
  • the server 70 may also provide the user with information regarding the road surface RS1 derived based on the database DB1.
  • the information on the road surface RS1 derived based on the database DB1 includes, for example, information on the freezing of the road surface RS1. Whether or not the road surface RS1 is frozen can be estimated from the measured temperature and the measured position. If the measured temperature is 0 degrees or less, it can be estimated that the measurement position associated with the measured temperature is frozen.
  • the server 70 or a management computer connected to the server 70 estimates whether the road surface RS1 is frozen.
  • the server 70 then provides information on the road surface RS1 to the user via the cloud.
  • the server 70 provides information on the road surface RS1 to the user through at least one of a web browser and an application.
  • Information about the road surface RS1 may be provided as text or as an image. Accordingly, when the measured temperature is 0 degrees or less, it is possible to alert the user that the road surface RS1 may be frozen.
  • the temperature of the road surface RS1 is transmitted to the temperature sensor 34, so that the temperature sensor 34 measures the temperature of the road surface RS1.
  • the temperature of the road surface RS1 is conducted to the temperature sensor 34 via the thermally conductive material 51.
  • the thermal conductivity of the thermally conductive material 51 is higher than that of air. Therefore, the temperature of the road surface RS1 is more easily conducted to the temperature sensor 34 than when a space is provided instead of the heat conductive material 51 .
  • the thermally conductive material 51 is provided between the temperature sensor 34 and the road surface RS1. Since the temperature of the road surface RS1 is easily conducted to the temperature sensor 34, the temperature measured by the temperature sensor 34 easily follows the temperature of the road surface RS1. Therefore, the temperature measuring device 20 can accurately measure the temperature of the road surface RS1.
  • the thermally conductive material 51 has a second portion 53 .
  • the second portion 53 is provided between the temperature sensor 34 and the defining surface 25 .
  • the temperature of the road surface RS1 is also transmitted to the temperature sensor 34 via the second portion 53 .
  • the path through which the temperature of the road surface RS1 is conducted to the temperature sensor 34 can be increased. Therefore, it becomes easier for the temperature measured by the temperature sensor 34 to follow the temperature of the road surface RS1.
  • the temperature measurement device 20 has a transmission circuit 38 .
  • the transmission circuit 38 can transmit the measurement result of the temperature sensor 34 to an external device.
  • a measurement result of the temperature sensor 34 can be provided to an external device.
  • External devices are the receiver 60 and the server 70 .
  • a measurement result of the temperature sensor 34 is transmitted to the receiver 60 and further transmitted from the receiver 60 to the server 70 .
  • the receiver 60 receives the measurement results of the plurality of temperature measurement devices 20 and transmits the measurement results to the server 70 , so that the communication device 66 may be provided only in the receiver 60 . Therefore, compared to the case where the communication device 66 is provided for each temperature measurement device 20, the manufacturing cost of the temperature measurement device 20 can be reduced. In addition, compared to the case where the communication device 66 is provided for each temperature measurement device 20, communication costs for communication with the server 70 can be reduced.
  • the temperature of the road R1 may be measured by the temperature sensor 34.
  • the temperature sensor 34 is provided so as to measure the temperature of the road surface RS1, and the heat conductive material 51 is interposed between the temperature sensor 34 and the road surface RS1. This makes it possible to measure the temperature of the road surface RS1 while improving the ability of the temperature sensor 34 to follow the temperature change of the road surface RS1.
  • the thermally conductive material 51 is provided between the temperature sensor 34 and the road surface RS1, and the thermally conductive material 51 does not have to be in contact with the road surface RS1.
  • a space may exist between the thermally conductive material 51 and the road surface RS1 or between the thermally conductive material 51 and the temperature sensor 34 .
  • the provision of the thermally conductive material 51 reduces the volume of the space existing between the temperature sensor 34 and the road surface RS1, so that the temperature of the road surface RS1 is easily conducted to the temperature sensor 34.
  • the heat conductive material 51 may be provided at least between the temperature sensor 34 and the road surface RS1. That is, the heat-conducting material 51 may not have the second portion 53 .
  • the second portion 53 may be provided only between the sensor unit 30 and the first defining surface 26 and between the sensor unit 30 and the second defining surface 27 .
  • the temperature measurement device 20 may be provided on the unpaved ground.
  • the temperature measurement device 20 may include a pressure sensor.
  • a pressure sensor is provided to measure the atmospheric pressure.
  • the pressure sensor measurement results may be sent to the server 70 .
  • the measurement results of the pressure sensor can be used, for example, for weather forecasting.
  • the temperature measurement device 20 does not have to include the transmission circuit 38 .
  • the temperature measurement device 20 may be configured to store the measured temperature measured by the temperature sensor 34 in association with the measurement time. That is, the temperature measuring device 20 may be used as a data logger.
  • the temperature measurement system 10 may include at least one of a display unit and a light emitting unit. At least one of the display section and the light emitting section may be provided in the temperature measurement device 20 . When at least one of the display section and the light emitting section is provided in the temperature measurement device 20, at least one of the display section and the light emitting section is provided on the outer surface of the installation body 21, for example.
  • the control device 35 may estimate whether the road surface RS1 is frozen from the measurement result of the temperature sensor 34 . For example, the control device 35 may estimate that the road surface RS1 is frozen when the measurement result of the temperature sensor 34 is 0 degrees or less.
  • the control device 35 estimates that the road surface RS1 is frozen, it performs display on the display unit and light emission from the light emitting unit. As a result, a warning may be given to people around the installation body 21 .
  • At least one of the display unit and the light emitting unit may be included in the receiver 60 or may be provided separately from the receiver 60 .
  • the receiver control device 61 may estimate whether the road surface RS1 is frozen from the measurement result of the temperature sensor . Then, when the receiver control device 61 estimates that the road surface RS1 is frozen, it performs display on the display unit and light emission from the light emitting unit. As a result, the attention of people around the receiver 60 can be called.
  • the temperature measurement device 20 may include an acceleration sensor.
  • the acceleration sensor measures acceleration applied to the acceleration sensor.
  • an impact is applied to the installation body 21.
  • - ⁇ As a result a larger acceleration is applied to the acceleration sensor than when the vehicle V1 does not pass over the installation body 21 . Therefore, when an accident occurs, checking the measurement result of the acceleration sensor at the time when the accident occurred can be useful for grasping the route that the vehicle V1 has passed.
  • the temperature measurement device 20 may include a communication device.
  • a communication device is a network device that includes a communication control unit, a port, and the like, and can transmit and receive information through a communication network NW.
  • the communication device is connected to the server 70 via the communication network NW.
  • the control device 35 may transmit the measurement result of the temperature sensor 34 to the server 70 via the communication device.
  • temperature measurement system 10 may not include receiver 60 . That is, the measurement result of the temperature sensor 34 may be directly transmitted from the temperature measuring device 20 to the server 70 or may be transmitted to the server 70 via the receiver 60 . It can be said that the external device may be only the server 70 or may be the receiver 60 and the server 70 .
  • the external device may be only the receiver 60 .
  • the receiver 60 receives the measurement results transmitted from the plurality of temperature measurement devices 20 and stores the measurement results.
  • the temperature measurement system 10 is used as a data logger.
  • a lane separator may be used as the installation body 21 .
  • a utility pole, a sign, or the like may be used as the installation body 21 .
  • the receiving antenna 65 of the receiver 60 may be provided outside the installation body 21 if the installation body 21 is made of a material that does not easily transmit radio signals.
  • the installation body 21 is not limited to an existing one, and may be one dedicated to the temperature measurement device 20 .
  • the shape of the installation body 21 may be changed as appropriate.
  • the sensor unit 30 may not include the housing 31 .
  • the temperature sensor 34, the control device 35, the transmission circuit 38, and the transmission antenna 39 may be accommodated in the accommodation area S1, and the accommodation area S1 may be filled with the thermally conductive material 51.
  • ⁇ There may be only one temperature measuring device 20 .
  • DB1...Database RS1...Road surface as the ground, S1...Accommodation area, 10...Temperature measurement system, 20...Temperature measurement device, 21...Installation body, 22...Bottom surface, 25...Definition surface, 34...Temperature sensor, 51...Heat Conductive material 60 -- Receiver as external equipment 66 -- Communication device 70 -- Server as external equipment.

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  • General Physics & Mathematics (AREA)
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Abstract

A temperature measurement device (20) that comprises: an installation body (21) configured so as to be installed on the ground (RS1); and a temperature sensor (34) configured so as to measure the temperature of the ground (RS1). The installation body (21) comprises: a base surface (22) that is in contact with the ground (RS1); and a demarcation surface (25) that demarcates a housing region (S1) that opens to the base surface (22). The temperature sensor (34) is housed in the housing region (S1). A thermally conductive material (51) that has a higher thermal conductivity than air is provided between the temperature sensor (34) and the ground (RS1).

Description

温度測定装置、及び温度測定システムTemperature measuring device and temperature measuring system
　本開示は、温度測定装置、及び温度測定システムに関する。 The present disclosure relates to temperature measurement devices and temperature measurement systems.
　特許文献１には、道路の温度を測定する温度測定装置が開示されている。特許文献１に開示の温度測定装置は、温度センサと、制御装置と、送受信回路と、を備える。温度センサは、道路の温度を測定する。制御装置は、温度センサの測定結果を取得する。制御装置は、送受信回路から温度センサの測定結果を外部機器に送信する。 Patent Document 1 discloses a temperature measuring device that measures the temperature of roads. A temperature measurement device disclosed in Patent Document 1 includes a temperature sensor, a control device, and a transmission/reception circuit. A temperature sensor measures the temperature of the road. The controller acquires the measurement result of the temperature sensor. The control device transmits the measurement result of the temperature sensor to the external device from the transmitting/receiving circuit.
特表２００７－５３６４４６号公報Japanese Patent Publication No. 2007-536446
　地面の温度は、時刻、日照状況、車両の交通状況等の要素によって逐次変化する。地面の温度変化に対する温度センサの温度変化の追従性が悪いと、地面の温度と温度センサの測定結果との乖離が大きくなる。即ち、地面の温度を精度良く測定することができない。 The temperature of the ground changes gradually depending on factors such as the time of day, sunshine conditions, and vehicle traffic conditions. If the followability of the temperature sensor to the temperature change of the ground is poor, the discrepancy between the temperature of the ground and the measurement result of the temperature sensor increases. That is, the temperature of the ground cannot be measured with high accuracy.
　本開示の第一の態様によれば、地面に設置されるように構成された設置体と、前記地面の温度を測定するように構成された温度センサと、を備えた温度測定装置が提供される。前記設置体は、前記地面に接する底面と、前記底面に開口する収容領域を画定する画定面と、を備える。前記温度センサは、前記収容領域に収容されており、前記温度測定装置はさらに、空気の熱伝導率よりも熱伝導率の高い熱伝導材料を備える。前記熱伝導材料は、前記温度センサと前記地面との間に設けられている。 According to a first aspect of the present disclosure, there is provided a temperature measuring device comprising an installation body configured to be installed on the ground, and a temperature sensor configured to measure the temperature of the ground. be. The installation body includes a bottom surface that contacts the ground, and a defining surface that defines a storage area that opens to the bottom surface. The temperature sensor is housed in the housing area, and the temperature measuring device further comprises a thermally conductive material having a thermal conductivity higher than that of air. The thermally conductive material is provided between the temperature sensor and the ground.
　これによれば、熱伝導材料に代えて空間が設けられている場合に比べて、地面の温度が温度センサに伝導しやすくなる。温度センサによって測定される測定温度が地面の温度に追従しやすい。従って、温度測定装置は、地面の温度を精度良く測定することができる。 According to this, the temperature of the ground is more easily transferred to the temperature sensor than when a space is provided instead of the heat-conducting material. The measured temperature measured by the temperature sensor tends to follow the temperature of the ground. Therefore, the temperature measuring device can accurately measure the temperature of the ground.
　上記温度測定装置について、前記熱伝導材料は、前記温度センサと前記画定面との間に設けられていてもよい。 With regard to the temperature measuring device, the thermally conductive material may be provided between the temperature sensor and the defining surface.
　上記温度測定装置について、前記温度センサの測定結果を外部機器に送信するように構成された送信回路をさらに備えていてもよい。 The temperature measurement device may further include a transmission circuit configured to transmit the measurement result of the temperature sensor to an external device.
　本開示の第二の態様によれば、温度測定装置と、外部機器と、を備えた温度測定システムが提供される。前記温度測定装置は、地面に設置されるように構成された設置体と、前記地面の温度を測定するように構成された温度センサと、を備える。前記設置体は、前記地面に接する底面と、前記底面に開口する収容領域を画定する画定面と、を備える。前記温度センサは、前記収容領域に収容されている。前記温度測定装置はさらに、空気の熱伝導率よりも熱伝導率の高い熱伝導材料と、前記温度センサの測定結果を前記外部機器に送信するように構成された送信回路と、を備える。前記熱伝導材料は、前記温度センサと前記地面との間に設けられている。 A second aspect of the present disclosure provides a temperature measurement system including a temperature measurement device and an external device. The temperature measurement device includes an installation body configured to be installed on the ground, and a temperature sensor configured to measure the temperature of the ground. The installation body includes a bottom surface that contacts the ground, and a defining surface that defines a storage area that opens to the bottom surface. The temperature sensor is housed in the housing area. The temperature measurement device further comprises a thermally conductive material having a thermal conductivity higher than that of air, and a transmission circuit configured to transmit the measurement results of the temperature sensor to the external device. The thermally conductive material is provided between the temperature sensor and the ground.
　温度センサによって測定される測定温度が地面の温度に追従しやすい。従って、温度測定装置は、地面の温度を精度良く測定することができる。 　The temperature measured by the temperature sensor easily follows the temperature of the ground. Therefore, the temperature measuring device can accurately measure the temperature of the ground.
　上記温度測定システムについて、前記温度測定装置を複数備え、前記外部機器は、複数の前記温度測定装置の前記測定結果を受信するように構成された受信機を含んでいてもよい。 The temperature measurement system may include a plurality of temperature measurement devices, and the external device may include a receiver configured to receive the measurement results of the plurality of temperature measurement devices.
　上記温度測定システムについて、前記外部機器は、サーバーを備え、前記受信機は、前記測定結果を前記サーバーに送信するように構成された通信装置を備え、前記サーバーは、前記測定結果に関するデータベースを備えていてもよい。 For the above temperature measurement system, the external device comprises a server, the receiver comprises a communication device configured to transmit the measurement results to the server, and the server comprises a database for the measurement results. may be
温度測定システムを示す模式図。Schematic diagram showing a temperature measurement system. 図１の温度測定システムが備える温度測定装置の斜視図。FIG. 2 is a perspective view of a temperature measurement device included in the temperature measurement system of FIG. 1; 温度測定装置を示す図２の３－３線断面図。FIG. 3 is a cross-sectional view along line 3-3 of FIG. 2 showing the temperature measuring device; 図１の温度測定システムが備える温度測定装置の概略構成図。FIG. 2 is a schematic configuration diagram of a temperature measurement device included in the temperature measurement system of FIG. 1; 図４のサーバーに記憶されたデータベースを示す模式図。5 is a schematic diagram showing a database stored in the server of FIG. 4; FIG.
　温度測定装置、及び温度測定システムの一実施形態について説明する。 An embodiment of a temperature measurement device and a temperature measurement system will be described.
　図１に示すように、温度測定システム１０は、１つ以上の温度測定装置２０と、１つ以上の受信機６０と、１つ以上のサーバー７０と、を備える。 As shown in FIG. 1, the temperature measurement system 10 includes one or more temperature measurement devices 20, one or more receivers 60, and one or more servers 70.
　複数の温度測定装置２０が、道路Ｒ１の各車線に沿って配置されている。道路Ｒ１は、舗装されている。道路Ｒ１には、車両Ｖ１が通過する。道路Ｒ１は、路面ＲＳ１を備える。地面である路面ＲＳ１は、舗装された道路Ｒ１の表面である。温度測定装置２０は、互いに間隔を空けて配置されている。 A plurality of temperature measuring devices 20 are arranged along each lane of the road R1. Road R1 is paved. A vehicle V1 passes through the road R1. The road R1 has a road surface RS1. The road surface RS1, which is the ground, is the surface of the paved road R1. The temperature measuring devices 20 are spaced apart from each other.
　図２及び図３に示すように、温度測定装置２０は、設置体２１と、センサユニット３０と、熱伝導材料５１と、を備える。 As shown in FIGS. 2 and 3, the temperature measurement device 20 includes an installation body 21, a sensor unit 30, and a heat conductive material 51.
　設置体２１は、路面ＲＳ１に設置される。設置体２１は、道路鋲である。設置体２１は、四角錐台形状である。設置体２１は、底面２２と、上面２３と、４つの側面２４と、を備える。底面２２、上面２３、及び側面２４は、設置体２１の表面である。側面２４は、底面２２と上面２３との間で延びている。設置体２１は、画定面２５を備える。画定面２５は、第１画定面２６と、第２画定面２７と、を備える。第１画定面２６は、底面２２と上面２３との間に位置している。第２画定面２７は、底面２２と第１画定面２６との間で延びている。第２画定面２７は、底面２２から上面２３に向かって延びる周壁面である。第２画定面２７は、例えば、四角筒状である。画定面２５は、収容領域Ｓ１を画定している。収容領域Ｓ１は、底面２２に開口している。収容領域Ｓ１は、例えば、四角形状である。設置体２１は、例えば、ＡＢＳ樹脂製である。 The installation body 21 is installed on the road surface RS1. The installation body 21 is a road stud. The installation body 21 has a truncated quadrangular pyramid shape. The installation body 21 has a bottom surface 22 , a top surface 23 and four side surfaces 24 . The bottom surface 22 , the top surface 23 and the side surfaces 24 are surfaces of the installation body 21 . A side surface 24 extends between the bottom surface 22 and the top surface 23 . The installation body 21 has a defining surface 25 . The defining plane 25 includes a first defining plane 26 and a second defining plane 27 . A first defining surface 26 is located between the bottom surface 22 and the top surface 23 . A second delimiting surface 27 extends between the bottom surface 22 and the first delimiting surface 26 . The second defining surface 27 is a peripheral wall surface extending from the bottom surface 22 toward the top surface 23 . The second defining surface 27 has, for example, a square tubular shape. The defining surface 25 defines a housing area S1. The accommodation area S1 opens to the bottom surface 22 . The accommodation area S1 is, for example, rectangular. The installation body 21 is made of ABS resin, for example.
　図３及び図４に示すように、センサユニット３０は、ハウジング３１と、温度センサ３４と、制御装置３５と、送信回路３８と、送信アンテナ３９と、ポッティング樹脂４０と、を備える。 As shown in FIGS. 3 and 4, the sensor unit 30 includes a housing 31, a temperature sensor 34, a control device 35, a transmission circuit 38, a transmission antenna 39, and potting resin 40.
　ハウジング３１は、温度センサ３４、制御装置３５、送信回路３８、及び送信アンテナ３９を収容している。ハウジング３１は、第１壁３２と、第２壁３３と、を備える。第１壁３２は、平板状である。第２壁３３は、周壁である。第２壁３３は、第１壁３２の周縁から延びている。 The housing 31 accommodates the temperature sensor 34, the control device 35, the transmission circuit 38, and the transmission antenna 39. Housing 31 includes a first wall 32 and a second wall 33 . The first wall 32 is flat. The second wall 33 is a peripheral wall. A second wall 33 extends from the periphery of the first wall 32 .
　温度センサ３４は、温度を測定する。詳細にいえば、温度センサ３４は、自身の温度に応じた測定結果を出力する。 The temperature sensor 34 measures the temperature. Specifically, the temperature sensor 34 outputs a measurement result corresponding to its own temperature.
　制御装置３５は、プロセッサ３６と、記憶部３７と、を備える。プロセッサ３６としては、例えば、MPU(Micro Processing Unit)、CPU(Central Processing Unit)、及びDSP(Digital Signal Processor)を挙げることができる。記憶部３７は、RAM（Random Access Memory）及びROM（Read Only Memory）を含む。記憶部３７は、処理をプロセッサ３６に実行させるように構成されたプログラムコード又は指令を格納している。制御装置３５は、ASICやFPGA等のハードウェア回路によって構成されていてもよい。処理回路である制御装置３５は、コンピュータプログラムに従って動作する１つ以上のプロセッサ、ASICやFPGA等の１つ以上のハードウェア回路、或いは、それらの組み合わせを含み得る。ROM及びRAMすなわちコンピュータ可読媒体は、汎用または専用のコンピュータでアクセスできるあらゆる利用可能な媒体を含む。記憶部３７は、対応する温度測定装置２０の固有の識別情報を示すＩＤコードを記憶している。 The control device 35 includes a processor 36 and a storage unit 37. Examples of the processor 36 include MPU (Micro Processing Unit), CPU (Central Processing Unit), and DSP (Digital Signal Processor). The storage unit 37 includes RAM (Random Access Memory) and ROM (Read Only Memory). Storage unit 37 stores program code or instructions configured to cause processor 36 to perform processes. The control device 35 may be configured by a hardware circuit such as ASIC or FPGA. The processing circuitry, controller 35, may include one or more processors operating according to a computer program, one or more hardware circuits such as ASICs or FPGAs, or a combination thereof. ROM and RAM or computer-readable media include any available media that can be accessed by a general purpose or special purpose computer. The storage unit 37 stores an ID code indicating unique identification information of the corresponding temperature measuring device 20 .
　制御装置３５は、フレームを生成する。制御装置３５は、生成したフレームを送信回路３８に出力する。フレームは、デジタルデータであり２進数のデータ列である。フレームは、プロトコルで規定されたフォーマットのデータで構成されている。フレームのフォーマットは、例えば、プリアンブル、ＩＤコード、温度データ、ステータスコード、及び誤り検出符号を含む。温度データは、温度センサ３４の測定結果である。 The control device 35 generates frames. The control device 35 outputs the generated frame to the transmission circuit 38 . A frame is digital data and is a data string of binary numbers. A frame consists of data in a format defined by the protocol. The frame format includes, for example, preamble, ID code, temperature data, status code, and error detection code. Temperature data is the measurement result of the temperature sensor 34 .
　送信回路３８は、制御装置３５から入力されたフレームに応じた変調を行った無線信号を送信アンテナ３９から送信する。送信回路３８は、フレームの送信を行う。これにより、送信回路３８から温度センサ３４の測定結果が送信される。無線信号は、所定の周波数帯の信号である。周波数帯としては、例えば、ＬＦ帯、ＭＦ帯、ＨＦ帯、ＶＨＦ帯、ＵＨＦ帯、及び２．４ＧＨｚ帯を挙げることができる。 The transmission circuit 38 transmits from the transmission antenna 39 a radio signal modulated according to the frame input from the control device 35 . The transmission circuit 38 transmits frames. Thereby, the measurement result of the temperature sensor 34 is transmitted from the transmission circuit 38 . A radio signal is a signal in a predetermined frequency band. Examples of frequency bands include the LF band, MF band, HF band, VHF band, UHF band, and 2.4 GHz band.
　ハウジング３１には、ポッティング樹脂４０が充填されている。ポッティング樹脂４０としては、例えば、ウレタン樹脂が用いられる。 The housing 31 is filled with potting resin 40 . Urethane resin, for example, is used as the potting resin 40 .
　センサユニット３０は、収容領域Ｓ１に収容されている。センサユニット３０は、第１壁３２から第２壁３３が延びる方向と、上面２３から底面２２に向かう方向とが一致するように、収容領域Ｓ１に収容されている。 The sensor unit 30 is housed in the housing area S1. The sensor unit 30 is accommodated in the accommodation area S1 such that the direction in which the second wall 33 extends from the first wall 32 and the direction from the top surface 23 to the bottom surface 22 are the same.
　熱伝導材料５１は、収容領域Ｓ１に充填されている。熱伝導材料５１の熱伝導率は、空気の熱伝導率よりも高い。熱伝導材料５１としては、例えば、シリコーンが用いられる。熱伝導材料５１は、第１部位５２と、第２部位５３と、を備える。第１部位５２は、底面２２を仮想的に延長した仮想面ＩＳ１と、センサユニット３０との間に設けられている。第１部位５２は、底面２２と面一、あるいは、収容領域Ｓ１から収容領域Ｓ１の外部に突出するように設けられている。第１部位５２は、温度センサ３４と仮想面ＩＳ１との間に設けられている。第２部位５３は、画定面２５とセンサユニット３０との間に設けられている。本実施形態において、第２部位５３は、第１画定面２６とセンサユニット３０の間、及び第２画定面２７とセンサユニット３０の間のそれぞれに設けられている。第２部位５３は、温度センサ３４と画定面２５との間に設けられている。温度センサ３４と画定面２５との間には、ポッティング樹脂４０、ハウジング３１、及び熱伝導材料５１が位置している。 The heat-conducting material 51 is filled in the housing area S1. The thermal conductivity of the thermally conductive material 51 is higher than that of air. For example, silicone is used as the thermally conductive material 51 . The thermally conductive material 51 has a first portion 52 and a second portion 53 . The first portion 52 is provided between a virtual plane IS<b>1 obtained by virtually extending the bottom surface 22 and the sensor unit 30 . The first part 52 is provided so as to be flush with the bottom surface 22 or protrude from the accommodation area S1 to the outside of the accommodation area S1. The first portion 52 is provided between the temperature sensor 34 and the virtual plane IS1. The second portion 53 is provided between the defining surface 25 and the sensor unit 30 . In this embodiment, the second parts 53 are provided between the first defining surface 26 and the sensor unit 30 and between the second defining surface 27 and the sensor unit 30, respectively. The second portion 53 is provided between the temperature sensor 34 and the defining surface 25 . Potting resin 40 , housing 31 , and thermally conductive material 51 are located between temperature sensor 34 and defining surface 25 .
　温度測定装置２０は、底面２２が路面ＲＳ１に接するように道路Ｒ１に設置される。本実施形態において、第１部位５２は、路面ＲＳ１に接触する。温度測定装置２０が路面ＲＳ１に設置された状態で、第１部位５２はセンサユニット３０と路面ＲＳ１との間に位置する。従って、第１部位５２は、温度センサ３４と路面ＲＳ１との間に設けられているといえる。本実施形態において、温度センサ３４と路面ＲＳ１との間には、第１部位５２、及びポッティング樹脂４０が介在している。 The temperature measuring device 20 is installed on the road R1 so that the bottom surface 22 is in contact with the road surface RS1. In this embodiment, the first portion 52 contacts the road surface RS1. With the temperature measuring device 20 installed on the road surface RS1, the first portion 52 is located between the sensor unit 30 and the road surface RS1. Therefore, it can be said that the first portion 52 is provided between the temperature sensor 34 and the road surface RS1. In this embodiment, the first portion 52 and the potting resin 40 are interposed between the temperature sensor 34 and the road surface RS1.
　図４に示すように、受信機６０は、受信機用制御装置６１と、受信回路６４と、受信アンテナ６５と、通信装置６６と、を備える。 As shown in FIG. 4, the receiver 60 includes a receiver control device 61, a receiving circuit 64, a receiving antenna 65, and a communication device 66.
　受信機用制御装置６１は、プロセッサ６２と、記憶部６３と、を備える。プロセッサ６２としては、例えば、MPU、CPU、及びDSPを挙げることができる。記憶部６３は、ROM及びRAMを含む。記憶部６３は、処理をプロセッサ６２に実行させるように構成されたプログラムコード又は指令を格納している。受信機用制御装置６１は、ASICやFPGA等のハードウェア回路によって構成されていてもよい。処理回路である受信機用制御装置６１は、コンピュータプログラムに従って動作する１つ以上のプロセッサ、ASICやFPGA等の１つ以上のハードウェア回路、或いは、それらの組み合わせを含み得る。ROM及びRAMすなわちコンピュータ可読媒体は、汎用または専用のコンピュータでアクセスできるあらゆる利用可能な媒体を含む。 The receiver control device 61 includes a processor 62 and a storage section 63 . Processors 62 may include, for example, MPUs, CPUs, and DSPs. The storage unit 63 includes ROM and RAM. Storage unit 63 stores program code or instructions configured to cause processor 62 to perform processing. The receiver control device 61 may be configured by a hardware circuit such as ASIC or FPGA. The processing circuitry, receiver controller 61, may include one or more processors operating according to a computer program, one or more hardware circuits such as ASICs or FPGAs, or a combination thereof. ROM and RAM or computer-readable media include any available media that can be accessed by a general purpose or special purpose computer.
　受信アンテナ６５は、各温度測定装置２０から送信された無線信号を受信する。受信回路６４は、受信アンテナ６５を介して受信された無線信号を復調して、フレームに含まれるデータを得る。受信回路６４は、データを受信機用制御装置６１に出力する。これにより、受信機用制御装置６１は、温度センサ３４の測定結果を取得する。受信機６０は、温度測定装置２０から送信された無線信号を受信することで、温度センサ３４の測定結果を受信している。 The receiving antenna 65 receives the radio signal transmitted from each temperature measuring device 20 . The receiving circuit 64 demodulates the radio signal received via the receiving antenna 65 to obtain the data contained in the frame. The receiving circuit 64 outputs data to the receiver control device 61 . Thereby, the receiver control device 61 acquires the measurement result of the temperature sensor 34 . The receiver 60 receives the measurement result of the temperature sensor 34 by receiving the wireless signal transmitted from the temperature measuring device 20 .
　通信装置６６は、通信制御部やポート等を備え、通信網ＮＷを通じて情報の送受信を行うことができるネットワーク機器である。通信装置６６は、通信網ＮＷを介してサーバー７０に接続されている。 The communication device 66 is a network device that includes a communication control unit, ports, etc., and can transmit and receive information through the communication network NW. The communication device 66 is connected to the server 70 via the communication network NW.
　図１に示すように、受信機６０は、温度測定装置２０からの無線信号を受信できるように配置されている。受信機６０は、例えば、道路Ｒ１に沿って設けられた構造物ＵＰ１に取り付けられている。この種の構造物ＵＰ１としては、例えば、ガードレール、及び電柱が挙げられる。図１に示す例では、受信機６０は、電柱に取り付けられている。 As shown in FIG. 1, the receiver 60 is arranged so that it can receive wireless signals from the temperature measuring device 20 . The receiver 60 is attached, for example, to a structure UP1 provided along the road R1. Examples of this type of structure UP1 include guardrails and utility poles. In the example shown in FIG. 1, the receiver 60 is attached to a utility pole.
　図４に示すように、サーバー７０は、データベースＤＢ１を備える。サーバー７０は、複数台であってもよいし、１台であってもよい。データベースＤＢ１は、温度測定装置２０によって測定された測定温度に関するデータの集合である。受信機６０及びサーバー７０は、外部機器である。 As shown in FIG. 4, the server 70 has a database DB1. The number of servers 70 may be plural or may be one. The database DB1 is a set of data regarding the measured temperature measured by the temperature measuring device 20 . Receiver 60 and server 70 are external devices.
　図５に示すように、サーバー７０が作成するデータベースＤＢ１は、測定温度に、測定時刻、及び測定位置を対応付けたものである。測定時刻は、温度センサ３４が路面ＲＳ１の温度を測定した時刻である。測定位置は、各温度測定装置２０が設けられた位置である。各温度測定装置２０の位置は、例えば、地球上の絶対位置を表す座標系の座標で表現される。この種の座標系としては、例えば、地理座標系を挙げることができる。各温度測定装置２０の位置は、無線信号に含まれるＩＤコードから特定されてもよい。これを実現するために、各温度測定装置２０のＩＤコードに各温度測定装置２０の座標を対応付けた情報が、サーバー７０、あるいは、受信機６０に予め記憶される。この場合、受信機６０、又はサーバー７０が各温度測定装置２０の位置を特定する。また、各温度測定装置２０の位置を示す情報を含む無線信号を各温度測定装置２０が送信するようにしてもよい。 As shown in FIG. 5, the database DB1 created by the server 70 associates the measured temperature with the measurement time and the measurement position. The measurement time is the time when the temperature sensor 34 measures the temperature of the road surface RS1. A measurement position is a position where each temperature measurement device 20 is provided. The position of each temperature measuring device 20 is represented, for example, by coordinates of a coordinate system representing absolute positions on the earth. A coordinate system of this kind can be, for example, a geographic coordinate system. The position of each temperature measuring device 20 may be specified from the ID code included in the radio signal. To achieve this, information in which the ID code of each temperature measuring device 20 is associated with the coordinates of each temperature measuring device 20 is pre-stored in the server 70 or the receiver 60 . In this case, the receiver 60 or server 70 identifies the location of each temperature measurement device 20 . Alternatively, each temperature measurement device 20 may transmit a radio signal including information indicating the position of each temperature measurement device 20 .
　サーバー７０は、ユーザーに対してサービスを提供する。サービスは、クラウドとして提供される。クラウドは、データを蓄積したり、サービスを提供したりするコンピュータの利用形態の１つである。サービスとしては、例えば、データベースＤＢ１の提供を挙げることができる。また、サーバー７０は、データベースＤＢ１に基づいて導出された路面ＲＳ１に関する情報をユーザーに提供してもよい。データベースＤＢ１に基づいて導出された路面ＲＳ１に関する情報は、例えば、路面ＲＳ１の凍結情報を含む。路面ＲＳ１が凍結しているか否かは、測定温度と、測定位置から推定することができる。測定温度が０度以下の場合、当該測定温度に対応付けられた測定位置は凍結していると推定することができる。路面ＲＳ１が凍結しているか否かの推定は、サーバー７０、又はサーバー７０に接続された管理コンピュータによって行われる。そして、サーバー７０は、クラウドによって路面ＲＳ１に関する情報をユーザーに提供する。サーバー７０は、ユーザーに対してウェブブラウザ及びアプリケーションの少なくとも一方で、路面ＲＳ１に関する情報を提供する。路面ＲＳ１に関する情報は、テキストで提供されてもよいし、画像で提供されてもよい。これにより、測定温度が０度以下の場合、路面ＲＳ１が凍結している可能性があることをユーザーに対して注意喚起することができる。 The server 70 provides services to users. Services are provided as a cloud. A cloud is one form of computer usage that accumulates data and provides services. As a service, for example, provision of the database DB1 can be mentioned. The server 70 may also provide the user with information regarding the road surface RS1 derived based on the database DB1. The information on the road surface RS1 derived based on the database DB1 includes, for example, information on the freezing of the road surface RS1. Whether or not the road surface RS1 is frozen can be estimated from the measured temperature and the measured position. If the measured temperature is 0 degrees or less, it can be estimated that the measurement position associated with the measured temperature is frozen. The server 70 or a management computer connected to the server 70 estimates whether the road surface RS1 is frozen. The server 70 then provides information on the road surface RS1 to the user via the cloud. The server 70 provides information on the road surface RS1 to the user through at least one of a web browser and an application. Information about the road surface RS1 may be provided as text or as an image. Accordingly, when the measured temperature is 0 degrees or less, it is possible to alert the user that the road surface RS1 may be frozen.
　本実施形態の作用について説明する。 The action of this embodiment will be described.
　路面ＲＳ１の温度が温度センサ３４に伝導することで、温度センサ３４は路面ＲＳ１の温度を測定する。温度センサ３４と路面ＲＳ１との間に熱伝導材料５１を設けていることで、路面ＲＳ１の温度は、熱伝導材料５１を介して温度センサ３４に伝導する。熱伝導材料５１の熱伝導率は、空気の熱伝導率よりも高い。このため、熱伝導材料５１に代えて空間を設けた場合に比べて、路面ＲＳ１の温度が温度センサ３４に伝導しやすい。 The temperature of the road surface RS1 is transmitted to the temperature sensor 34, so that the temperature sensor 34 measures the temperature of the road surface RS1. By providing the thermally conductive material 51 between the temperature sensor 34 and the road surface RS1, the temperature of the road surface RS1 is conducted to the temperature sensor 34 via the thermally conductive material 51. The thermal conductivity of the thermally conductive material 51 is higher than that of air. Therefore, the temperature of the road surface RS1 is more easily conducted to the temperature sensor 34 than when a space is provided instead of the heat conductive material 51 .
　本実施形態の効果について説明する。 The effect of this embodiment will be explained.
　（１）熱伝導材料５１は、温度センサ３４と路面ＲＳ１との間に設けられている。路面ＲＳ１の温度が温度センサ３４に伝導しやすくなるため、温度センサ３４によって測定される測定温度が路面ＲＳ１の温度に追従しやすい。従って、温度測定装置２０は、路面ＲＳ１の温度を精度良く測定することができる。 (1) The thermally conductive material 51 is provided between the temperature sensor 34 and the road surface RS1. Since the temperature of the road surface RS1 is easily conducted to the temperature sensor 34, the temperature measured by the temperature sensor 34 easily follows the temperature of the road surface RS1. Therefore, the temperature measuring device 20 can accurately measure the temperature of the road surface RS1.
　（２）熱伝導材料５１は、第２部位５３を備える。第２部位５３は、温度センサ３４と画定面２５との間に設けられている。路面ＲＳ１の温度は、第２部位５３を介しても温度センサ３４に伝導する。路面ＲＳ１の温度が温度センサ３４に伝導する経路を増加させることができる。従って、温度センサ３４の測定温度が路面ＲＳ１の温度に更に追従しやすくなる。 (2) The thermally conductive material 51 has a second portion 53 . The second portion 53 is provided between the temperature sensor 34 and the defining surface 25 . The temperature of the road surface RS1 is also transmitted to the temperature sensor 34 via the second portion 53 . The path through which the temperature of the road surface RS1 is conducted to the temperature sensor 34 can be increased. Therefore, it becomes easier for the temperature measured by the temperature sensor 34 to follow the temperature of the road surface RS1.
　（３）温度測定装置２０は、送信回路３８を備える。送信回路３８は、外部機器に温度センサ３４の測定結果を送信することができる。温度センサ３４の測定結果を外部機器に提供することができる。 (3) The temperature measurement device 20 has a transmission circuit 38 . The transmission circuit 38 can transmit the measurement result of the temperature sensor 34 to an external device. A measurement result of the temperature sensor 34 can be provided to an external device.
　（４）外部機器は、受信機６０及びサーバー７０である。温度センサ３４の測定結果は、受信機６０に送信され、更に受信機６０からサーバー７０に送信される。複数の温度測定装置２０の測定結果を受信機６０が受信し、受信機６０がサーバー７０に測定結果を送信することで、受信機６０にのみ通信装置６６を設ければよい。このため、温度測定装置２０毎に通信装置６６を設ける場合に比べて、温度測定装置２０の製造コストを低減することができる。また、温度測定装置２０毎に通信装置６６を設ける場合に比べて、サーバー７０との通信による通信コストを低減することができる。 (4) External devices are the receiver 60 and the server 70 . A measurement result of the temperature sensor 34 is transmitted to the receiver 60 and further transmitted from the receiver 60 to the server 70 . The receiver 60 receives the measurement results of the plurality of temperature measurement devices 20 and transmits the measurement results to the server 70 , so that the communication device 66 may be provided only in the receiver 60 . Therefore, compared to the case where the communication device 66 is provided for each temperature measurement device 20, the manufacturing cost of the temperature measurement device 20 can be reduced. In addition, compared to the case where the communication device 66 is provided for each temperature measurement device 20, communication costs for communication with the server 70 can be reduced.
　（５）温度センサ３４を道路Ｒ１に埋め込むことで、温度センサ３４によって道路Ｒ１の温度を測定することも考えられる。発明者らが実験を行った結果、温度センサ３４を道路Ｒ１に埋め込むと、道路Ｒ１の温度変化に対する温度センサ３４の温度変化の追従性が低下するという知見が得られた。また、路面ＲＳ１の凍結情報のように、路面ＲＳ１に関する情報を得ようとする場合、路面ＲＳ１の温度を測定するように温度センサ３４を設けることが好ましい。そこで、本実施形態では路面ＲＳ１の温度を測定するように温度センサ３４を設けて、温度センサ３４と路面ＲＳ１との間に熱伝導材料５１が介在するようにしている。これにより、路面ＲＳ１の温度変化に対する温度センサ３４の温度変化の追従性を向上させつつ、路面ＲＳ１の温度を測定することができる。 (5) By embedding the temperature sensor 34 in the road R1, the temperature of the road R1 may be measured by the temperature sensor 34. As a result of experiments conducted by the inventors, it was found that if the temperature sensor 34 is embedded in the road R1, the ability of the temperature sensor 34 to follow the temperature change of the road R1 deteriorates. When trying to obtain information about the road surface RS1, such as information about freezing of the road surface RS1, it is preferable to provide the temperature sensor 34 so as to measure the temperature of the road surface RS1. Therefore, in this embodiment, the temperature sensor 34 is provided so as to measure the temperature of the road surface RS1, and the heat conductive material 51 is interposed between the temperature sensor 34 and the road surface RS1. This makes it possible to measure the temperature of the road surface RS1 while improving the ability of the temperature sensor 34 to follow the temperature change of the road surface RS1.
　実施形態は、以下のように変更して実施することができる。各実施形態及び以下の変形例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。 The embodiment can be changed and implemented as follows. Each embodiment and the following modifications can be implemented in combination with each other within a technically consistent range.
　・温度センサ３４と路面ＲＳ１との間に熱伝導材料５１が設けられていればよく、熱伝導材料５１は路面ＲＳ１に接していなくてもよい。この場合、熱伝導材料５１と路面ＲＳ１との間、あるいは、熱伝導材料５１と温度センサ３４との間には、空間が存在する場合がある。この場合であっても、熱伝導材料５１を設けることで温度センサ３４と路面ＲＳ１との間に存在する空間の体積が少なくなるため、路面ＲＳ１の温度が温度センサ３４に伝導しやすくなる。 · It is sufficient that the thermally conductive material 51 is provided between the temperature sensor 34 and the road surface RS1, and the thermally conductive material 51 does not have to be in contact with the road surface RS1. In this case, a space may exist between the thermally conductive material 51 and the road surface RS1 or between the thermally conductive material 51 and the temperature sensor 34 . Even in this case, the provision of the thermally conductive material 51 reduces the volume of the space existing between the temperature sensor 34 and the road surface RS1, so that the temperature of the road surface RS1 is easily conducted to the temperature sensor 34.
　・熱伝導材料５１は、少なくとも温度センサ３４と路面ＲＳ１との間に設けられていればよい。即ち、熱伝導材料５１は第２部位５３を備えていなくてもよい。 · The heat conductive material 51 may be provided at least between the temperature sensor 34 and the road surface RS1. That is, the heat-conducting material 51 may not have the second portion 53 .
　・第２部位５３は、センサユニット３０と第１画定面２６との間、及びセンサユニット３０と第２画定面２７との間の一方にのみ設けられていてもよい。 · The second portion 53 may be provided only between the sensor unit 30 and the first defining surface 26 and between the sensor unit 30 and the second defining surface 27 .
　・温度測定装置２０は、舗装されていない地面に設けられていてもよい。 · The temperature measurement device 20 may be provided on the unpaved ground.
　・温度測定装置２０は、圧力センサを備えていてもよい。この場合、圧力センサは、大気圧を測定するように設けられる。圧力センサの測定結果は、サーバー７０に送信されてもよい。圧力センサの測定結果は、例えば、気象予報に用いることができる。 · The temperature measurement device 20 may include a pressure sensor. In this case, a pressure sensor is provided to measure the atmospheric pressure. The pressure sensor measurement results may be sent to the server 70 . The measurement results of the pressure sensor can be used, for example, for weather forecasting.
　・温度測定装置２０は、送信回路３８を備えていなくてもよい。この場合、温度測定装置２０は、温度センサ３４によって測定された測定温度を測定時刻に対応付けて記憶するように構成されていてもよい。即ち、温度測定装置２０は、データロガーとして用いられてもよい。 · The temperature measurement device 20 does not have to include the transmission circuit 38 . In this case, the temperature measurement device 20 may be configured to store the measured temperature measured by the temperature sensor 34 in association with the measurement time. That is, the temperature measuring device 20 may be used as a data logger.
　・温度測定システム１０は、表示部及び発光部の少なくとも一方を備えていてもよい。表示部及び発光部の少なくとも一方は、温度測定装置２０が備えていてもよい。表示部及び発光部の少なくとも一方を温度測定装置２０に設ける場合、表示部及び発光部の少なくとも一方は、例えば、設置体２１の外面に設けられる。制御装置３５は、温度センサ３４の測定結果から路面ＲＳ１が凍結しているか否かを推定してもよい。例えば、制御装置３５は、温度センサ３４の測定結果が０度以下の場合には、路面ＲＳ１が凍結していると推定してもよい。そして、制御装置３５は、路面ＲＳ１が凍結していると推定した場合には、表示部への表示や発光部の発光を行う。これにより、設置体２１の周囲の人に対して警報を行ってもよい。表示部及び発光部の少なくとも一方は、受信機６０が備えていてもよいし、受信機６０とは別体として設けられていてもよい。この場合、受信機用制御装置６１は、温度センサ３４の測定結果から路面ＲＳ１が凍結しているか否かを推定してもよい。そして、受信機用制御装置６１は、路面ＲＳ１が凍結していると推定した場合には、表示部への表示や発光部の発光を行う。これにより、受信機６０の周囲の人に対して、注意喚起を行うことができる。 · The temperature measurement system 10 may include at least one of a display unit and a light emitting unit. At least one of the display section and the light emitting section may be provided in the temperature measurement device 20 . When at least one of the display section and the light emitting section is provided in the temperature measurement device 20, at least one of the display section and the light emitting section is provided on the outer surface of the installation body 21, for example. The control device 35 may estimate whether the road surface RS1 is frozen from the measurement result of the temperature sensor 34 . For example, the control device 35 may estimate that the road surface RS1 is frozen when the measurement result of the temperature sensor 34 is 0 degrees or less. Then, when the control device 35 estimates that the road surface RS1 is frozen, it performs display on the display unit and light emission from the light emitting unit. As a result, a warning may be given to people around the installation body 21 . At least one of the display unit and the light emitting unit may be included in the receiver 60 or may be provided separately from the receiver 60 . In this case, the receiver control device 61 may estimate whether the road surface RS1 is frozen from the measurement result of the temperature sensor . Then, when the receiver control device 61 estimates that the road surface RS1 is frozen, it performs display on the display unit and light emission from the light emitting unit. As a result, the attention of people around the receiver 60 can be called.
　・温度測定装置２０は、加速度センサを備えていてもよい。加速度センサは、加速度センサに加わる加速度を測定する。車両Ｖ１が設置体２１の上を通過した場合には、設置体２１に衝撃が加わる。これにより、車両Ｖ１が設置体２１の上を通過していない場合に比べて、加速度センサに大きな加速度が加わる。従って、事故が発生した場合に、事故が発生した時刻での加速度センサの測定結果を確認することで、車両Ｖ１が通過した経路の把握に役立てることができる。 · The temperature measurement device 20 may include an acceleration sensor. The acceleration sensor measures acceleration applied to the acceleration sensor. When the vehicle V1 passes over the installation body 21, an impact is applied to the installation body 21. - 特許庁As a result, a larger acceleration is applied to the acceleration sensor than when the vehicle V1 does not pass over the installation body 21 . Therefore, when an accident occurs, checking the measurement result of the acceleration sensor at the time when the accident occurred can be useful for grasping the route that the vehicle V1 has passed.
　・温度測定装置２０は、通信装置を備えていてもよい。通信装置は、通信制御部やポート等を備え、通信網ＮＷを通じて情報の送受信を行うことができるネットワーク機器である。通信装置は、通信網ＮＷを介してサーバー７０に接続されている。制御装置３５は、通信装置を介して温度センサ３４の測定結果をサーバー７０に送信してもよい。この場合、温度測定システム１０は、受信機６０を備えていなくてもよい。即ち、温度センサ３４の測定結果は、温度測定装置２０から直接サーバー７０に送信されるようにしてもよいし、受信機６０を介してサーバー７０に送信されるようにしてもよい。外部機器は、サーバー７０のみであってもよいし、受信機６０及びサーバー７０であってもよいといえる。 · The temperature measurement device 20 may include a communication device. A communication device is a network device that includes a communication control unit, a port, and the like, and can transmit and receive information through a communication network NW. The communication device is connected to the server 70 via the communication network NW. The control device 35 may transmit the measurement result of the temperature sensor 34 to the server 70 via the communication device. In this case, temperature measurement system 10 may not include receiver 60 . That is, the measurement result of the temperature sensor 34 may be directly transmitted from the temperature measuring device 20 to the server 70 or may be transmitted to the server 70 via the receiver 60 . It can be said that the external device may be only the server 70 or may be the receiver 60 and the server 70 .
　・外部機器は、受信機６０のみであってもよい。この場合、受信機６０は、複数の温度測定装置２０から送信された測定結果を受信して、当該測定結果を記憶する。この場合、温度測定システム１０は、データロガーとして用いられる。 · The external device may be only the receiver 60 . In this case, the receiver 60 receives the measurement results transmitted from the plurality of temperature measurement devices 20 and stores the measurement results. In this case the temperature measurement system 10 is used as a data logger.
　・設置体２１としては、車線分離標を用いてもよい。また、設置体２１としては、電柱、標識等を用いてもよい。設置体２１が無線信号を通過させにくい材料で製造されている場合、受信機６０の受信アンテナ６５を設置体２１の外部に設けてもよい。また、設置体２１は、既存のものに限られず、温度測定装置２０に専用のものであってもよい。 · A lane separator may be used as the installation body 21 . Moreover, as the installation body 21, a utility pole, a sign, or the like may be used. The receiving antenna 65 of the receiver 60 may be provided outside the installation body 21 if the installation body 21 is made of a material that does not easily transmit radio signals. Moreover, the installation body 21 is not limited to an existing one, and may be one dedicated to the temperature measurement device 20 .
　・設置体２１の形状は適宜変更してもよい。 · The shape of the installation body 21 may be changed as appropriate.
　・センサユニット３０は、ハウジング３１を備えていなくてもよい。この場合、温度センサ３４、制御装置３５、送信回路３８、及び送信アンテナ３９を収容領域Ｓ１に収容し、収容領域Ｓ１に熱伝導材料５１を充填すればよい。 · The sensor unit 30 may not include the housing 31 . In this case, the temperature sensor 34, the control device 35, the transmission circuit 38, and the transmission antenna 39 may be accommodated in the accommodation area S1, and the accommodation area S1 may be filled with the thermally conductive material 51. FIG.
　・温度測定装置２０は、１つのみであってもよい。 · There may be only one temperature measuring device 20 .
　ＤＢ１…データベース、ＲＳ１…地面としての路面、Ｓ１…収容領域、１０…温度測定システム、２０…温度測定装置、２１…設置体、２２…底面、２５…画定面、３４…温度センサ、５１…熱伝導材料、６０…外部機器としての受信機、６６…通信装置、７０…外部機器としてのサーバー。 DB1...Database, RS1...Road surface as the ground, S1...Accommodation area, 10...Temperature measurement system, 20...Temperature measurement device, 21...Installation body, 22...Bottom surface, 25...Definition surface, 34...Temperature sensor, 51...Heat Conductive material 60 -- Receiver as external equipment 66 -- Communication device 70 -- Server as external equipment.

Claims (6)

  1. 　地面に設置されるように構成された設置体と、
    　前記地面の温度を測定するように構成された温度センサと、を備えた温度測定装置であって、
    　前記設置体は、
    　前記地面に接する底面と、
    　前記底面に開口する収容領域を画定する画定面と、を備え、
    　前記温度センサは、前記収容領域に収容されており、
    　前記温度測定装置はさらに、空気の熱伝導率よりも熱伝導率の高い熱伝導材料を備え、
    　前記熱伝導材料は、前記温度センサと前記地面との間に設けられている、温度測定装置。     an installation body configured to be installed on the ground;
    a temperature sensor configured to measure the temperature of the ground,
    The installation body is
    a bottom surface in contact with the ground;
    a defining surface that defines an accommodation area that opens to the bottom surface;
    The temperature sensor is housed in the housing area,
    the temperature measuring device further comprising a thermally conductive material having a thermal conductivity higher than that of air;
    The temperature measuring device, wherein the thermally conductive material is provided between the temperature sensor and the ground.
  2. 　前記熱伝導材料は、前記温度センサと前記画定面との間に設けられている、請求項１に記載の温度測定装置。 The temperature measuring device according to claim 1, wherein the thermally conductive material is provided between the temperature sensor and the defining surface.
  3. 　前記温度センサの測定結果を外部機器に送信するように構成された送信回路をさらに備える、請求項１又は請求項２に記載の温度測定装置。 The temperature measurement device according to claim 1 or 2, further comprising a transmission circuit configured to transmit the measurement result of the temperature sensor to an external device.
  4. 　温度測定装置と、
    　外部機器と、を備えた温度測定システムであって、
    　前記温度測定装置は、
    　地面に設置されるように構成された設置体と、
    　前記地面の温度を測定するように構成された温度センサと、を備え、
    　前記設置体は、
    　前記地面に接する底面と、
    　前記底面に開口する収容領域を画定する画定面と、を備え、
    　前記温度センサは、前記収容領域に収容されており、
    　前記温度測定装置はさらに、
    　空気の熱伝導率よりも熱伝導率の高い熱伝導材料と、
    　前記温度センサによる温度の測定結果を前記外部機器に送信するように構成された送信回路と、を備え、
    　前記熱伝導材料は、前記温度センサと前記地面との間に設けられている、温度測定システム。     a temperature measuring device;
    A temperature measurement system comprising an external device,
    The temperature measuring device
    an installation body configured to be installed on the ground;
    a temperature sensor configured to measure the temperature of the ground;
    The installation body is
    a bottom surface in contact with the ground;
    a defining surface that defines an accommodation area that opens to the bottom surface;
    The temperature sensor is housed in the housing area,
    The temperature measuring device further comprises:
    a thermally conductive material having a thermal conductivity higher than that of air;
    a transmission circuit configured to transmit the result of temperature measurement by the temperature sensor to the external device;
    A temperature measurement system, wherein the thermally conductive material is provided between the temperature sensor and the ground.
  5. 　前記温度測定装置を複数備え、
    　前記外部機器は、複数の前記温度測定装置の前記測定結果を受信するように構成された受信機を含む、請求項４に記載の温度測定システム。     A plurality of the temperature measuring devices,
    5. The temperature measurement system of Claim 4, wherein the external device includes a receiver configured to receive the measurements of the plurality of temperature measurement devices.
  6. 　前記外部機器は、サーバーを備え、
    　前記受信機は、前記測定結果を前記サーバーに送信するように構成された通信装置を備え、
    　前記サーバーは、前記測定結果に関するデータベースを備える、請求項５に記載の温度測定システム。     the external device comprises a server;
    the receiver comprises a communication device configured to transmit the measurement results to the server;
    6. The temperature measurement system of claim 5, wherein said server comprises a database of said measurements.
PCT/JP2021/024328 2021-06-28 2021-06-28 Temperature measurement device and temperature measurement system WO2023275924A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01248031A (en) * 1988-03-29 1989-10-03 Agency Of Ind Science & Technol Ground surface temperature sensor
JPH0447636U (en) * 1990-08-28 1992-04-22
JP2010071955A (en) * 2008-09-22 2010-04-02 Kictec Inc Road attachment and temperature observation system using same
JP2014528035A (en) * 2011-09-11 2014-10-23 ソーラー ブライト リミテッドＳｏｌａｒ Ｂｒｉｇｈｔ Ｌｉｍｉｔｅｄ Road marker or light warning device
US20200199832A1 (en) * 2017-04-25 2020-06-25 MZC Foundation, Inc. Apparatus, system, and method for smart roadway stud control and signaling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01248031A (en) * 1988-03-29 1989-10-03 Agency Of Ind Science & Technol Ground surface temperature sensor
JPH0447636U (en) * 1990-08-28 1992-04-22
JP2010071955A (en) * 2008-09-22 2010-04-02 Kictec Inc Road attachment and temperature observation system using same
JP2014528035A (en) * 2011-09-11 2014-10-23 ソーラー ブライト リミテッドＳｏｌａｒ Ｂｒｉｇｈｔ Ｌｉｍｉｔｅｄ Road marker or light warning device
US20200199832A1 (en) * 2017-04-25 2020-06-25 MZC Foundation, Inc. Apparatus, system, and method for smart roadway stud control and signaling

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