JP2024002271A - Tunnel measurement system, measurement point unit, and control device of measurement point unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tunnel measurement system, a measurement point unit, and a control device of the measurement point unit to facilitate installation and removal of the measurement device when measuring pressure distribution in a tunnel and monitor the measurement status by the measurement device when controlling the measurement of pressure distribution inside the tunnel.

SOLUTION: Communication cables are communicably connected in series via communication connectors for measurement points of a plurality of measurement point units and communication connectors for an arithmetic processing unit in an arithmetic processing unit. In addition, transmission paths are connected in series through transmission connectors for the measurement points of the plurality of measurement point units and transmission connectors for reference measurement points in a reference measurement point unit so as to be able to transmit the reference physical quantity. Further, each time the communication cable measurement value acquisition instruction signal is intermittently transmitted, a first display indicating that measurement value acquisition is instructed to the corresponding measurement point unit is made on the corresponding individual display unit, and the display unit is controlled so that a second display indicating an update of the measurement value is displayed on a separate display unit that can be distinguished from the first display at the corresponding measurement point unit each time an updated measurement value signal is received.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to an in-tunnel measurement system, a measurement point unit, and a control device for the measurement point unit.

Patent Document 1 (Japanese Unexamined Patent Publication No. 9-5185) relates to a pressure measurement system in a tunnel, and while a measuring vehicle equipped with a pitot tube is traveling in a tunnel, the dynamic pressure at each point on the travel route is measured using a differential pressure gauge. An invention is described for measuring the .

Patent Document 2 (Japanese Unexamined Patent Publication No. 2021-140511) describes a temperature monitoring system in a tunnel, in which a temperature sensor cable is laid along the longitudinal direction of the tunnel and temperature detection sensors are arranged at predetermined intervals. An invention is described in which a tunnel temperature distribution measuring section measures the temperature distribution inside the tunnel based on temperature data sent via a sensor cable.

Patent Document 3 (Japanese Unexamined Patent Application Publication No. 2016-156730) describes a measurement point unit that integrates an AD converter and a sensor unit with respect to an acoustic testing device used in a tunnel.

Japanese Patent Application Publication No. 9-5185 JP2021-140511A JP2016-156730A

An object of the present invention is to enable easy installation and removal of measuring equipment when measuring the distribution of physical quantities within a tunnel. Another object of the present invention is to make it possible to monitor the measurement state of a measuring device when controlling the measurement of a physical quantity inside a tunnel.

A first aspect is an in-tunnel measurement system that measures physical quantities at a plurality of measurement points in a tunnel, including a sensor section that is arranged at each of the plurality of measurement points and that detects the physical quantity, and a sensor section that detects the physical quantity. a plurality of measurement point units provided with a measurement point processing unit that processes a physical quantity into a communicable signal, a measurement point communication connector communicably connected to the measurement point processing unit; an arithmetic processing unit for arithmetic processing of physical quantities detected by each point unit; a communication connector for the arithmetic processing unit communicatively connected to the arithmetic processing unit; a communication connector for the measurement point and a communication connector for the arithmetic processing unit; This is an in-tunnel measurement system equipped with communication cables that connect in series to enable communication.

In a second aspect, in the first aspect, the measurement point processing section includes a processing section that converts an analog signal of the physical quantity detected by the sensor section into a communicable digital signal. It is a measurement system.

A third aspect is the in-tunnel measurement system according to the first or second aspect, wherein the sensor section is a pressure sensor that detects pressure.

A fourth aspect is the in-tunnel measurement system according to any one of the first to third aspects, wherein the sensor section includes a sensor that detects static pressure.

A fifth aspect is the in-tunnel measurement system according to any one of the first to fourth aspects, wherein the sensor section includes a pitot tube.

In a sixth aspect, in any one of the first to fifth aspects, the measurement point unit includes a portable stand, the sensor section attached to the stand, and the measurement point attached to the stand. This is an in-tunnel measurement system configured to include a measurement point processing section and the measurement point communication connector communicably connected to the measurement point processing section via a branch communication cable.

In a seventh aspect, in any one of the first to sixth aspects, a power supply cable for supplying power from a power source is arranged, and the power supply cable is branched from the power supply cable to each of the plurality of measurement point units. This is an in-tunnel measurement system in which branch power supply cables are placed to supply power.

An eighth aspect is an in-tunnel measurement system that measures physical quantities at a plurality of measurement points in a tunnel, including a sensor unit that is arranged at each of the plurality of measurement points and that detects the physical quantity, and a sensor unit that detects the physical quantity. a physical quantity acquisition unit that acquires a physical quantity corresponding to the physical quantity and a reference physical quantity; a plurality of measurement point units provided with measurement point transmission connectors connected to the physical quantity acquisition unit so as to be able to transmit the reference physical quantity; a reference measurement point unit disposed at a reference measurement point to be acquired and provided with a reference sensor section for detecting a reference physical quantity; a reference measurement point transmission connector connected to the reference physical quantity so as to be able to transmit the reference physical quantity from the reference sensor section; an arithmetic processing unit that is communicably connected to each of the plurality of measurement point units and processes physical quantities acquired for each of the plurality of measurement point units, and the transmission connector for the measurement point and the transmission connector for the reference measurement point; This is an in-tunnel measurement system equipped with transmission lines connected in series so that reference physical quantities can be transmitted.

A ninth aspect is the in-tunnel measurement system according to the eighth aspect, further comprising a measurement point processing unit that converts the analog signal of the physical quantity acquired by the physical quantity acquisition unit into a communicable digital signal. .

A tenth aspect is the in-tunnel measurement system according to the eighth or ninth aspect, wherein the sensor section is a pressure sensor that detects pressure.

An eleventh aspect is the in-tunnel measurement system according to any one of the eighth to tenth aspects, wherein the sensor section includes a sensor that detects static pressure.

A twelfth aspect is the in-tunnel measurement system according to any one of the eighth to eleventh aspects, wherein the sensor section includes a pitot tube.

A thirteenth aspect is a tunnel according to any one of the eighth to twelfth aspects, wherein the physical quantity acquisition unit is a differential pressure gauge that acquires a differential pressure between the pressure and a reference pressure, and the transmission path is an air tube. It is an internal measurement system.

In a fourteenth aspect, in any one of the eighth to thirteenth aspects, the measurement point unit includes a portable stand, the sensor section attached to the stand, and the physical quantity acquisition attached to the stand. and the measurement point transmission connector connected to the physical quantity acquisition unit so as to be able to transmit a reference physical quantity via a branch transmission path.

In a fifteenth aspect, in any one of the eighth to fourteenth aspects, a power supply cable for supplying power from a power source is arranged, and the power supply cable is branched from the power supply cable to each of the plurality of measurement point units. This is an in-tunnel measurement system in which a branch power supply cable for supplying power is arranged.

In a 16th aspect, in any of the 8th to 15th aspects, the reference measurement point unit also serves as the measurement point unit, and any one of the plurality of measurement point units is the reference measurement point unit. , an in-tunnel measurement system.

A seventeenth aspect is an in-tunnel measurement system that measures physical quantities at a plurality of measurement points in a tunnel, comprising: a sensor section that is arranged at each of the plurality of measurement points and that detects the physical quantity; a physical quantity acquisition unit that acquires a physical quantity according to the physical quantity and a reference physical quantity, and a measurement point transmission connector connected to the physical quantity acquisition unit so as to be able to transmit the reference physical quantity, and the physical quantity acquired by the physical quantity acquisition unit can be communicated. a plurality of measurement point units provided with a measurement point processing unit that processes the signal into a signal, a measurement point communication connector that is communicably connected to the measurement point processing unit, and a reference measurement point that acquires a reference physical quantity. a reference sensor section arranged to detect a reference physical quantity; a reference measurement point unit provided with a reference measurement point transmission connector connected to enable transmission of the reference physical quantity from the reference sensor section; and a reference measurement point unit for each of the plurality of measurement point units. an arithmetic processing unit that performs arithmetic processing on physical quantities acquired by the arithmetic processing unit; a communication connector for the arithmetic processing unit that is communicatively connected to the arithmetic processing unit; and a transmission connector for the measurement point and the reference measurement point transmission connector. This is an in-tunnel measurement system comprising: a transmission line connected in series so as to transmit a reference physical quantity; and a communication cable connecting the measurement point communication connector and the arithmetic processing unit communication connector in series so as to communicate.

An 18th aspect is the tunnel according to the 17th aspect, wherein the measurement point processing section includes a processing section that converts an analog signal of the physical quantity acquired by the physical quantity acquisition section into a communicable digital signal. It is an internal measurement system.

A nineteenth aspect is the in-tunnel measurement system according to the seventeenth or eighteenth aspect, wherein the sensor section is a pressure sensor that detects pressure.

A 20th aspect is the in-tunnel measurement system according to any of the 17th to 19th aspects, wherein the sensor section includes a sensor that detects static pressure.

A twenty-first aspect is the in-tunnel measurement system according to any of the seventeenth to twentieth aspects, wherein the sensor section includes a pitot tube.

In a twenty-second aspect, in any of the seventeenth to twenty-first aspects, the physical quantity acquisition unit is a differential pressure gauge that acquires a differential pressure between the pressure and a reference pressure, and the transmission path is an air tube. It is a measurement system.

In a twenty-third aspect, in any of the seventeenth to twenty-second aspects, the measurement point unit includes a portable stand, the sensor section attached to the stand, and the physical quantity acquisition section attached to the stand. , the measurement point transmission connector connected to the physical quantity acquisition section so as to transmit a reference physical quantity via a branch transmission path, the measurement point processing section attached to the stand, and the measurement point processing section This is an in-tunnel measurement system configured to include the measurement point communication connector communicatively connected to the measurement point via a branch communication cable.

In a 24th aspect, in any of the 17th to 23rd aspects, a power supply cable for supplying power from a power source is arranged, and the power supply cable is branched from the power supply cable to provide power to each of the plurality of measurement point units. This is an in-tunnel measurement system in which a branch power supply cable is arranged to supply power.

A twenty-fifth aspect is that in any of the seventeenth to twenty-fourth aspects, the reference measurement point unit also serves as the measurement point unit, and any one of the plurality of measurement point units is the reference measurement point unit. This is an in-tunnel measurement system.

A twenty-sixth aspect is a measurement point unit used for an in-tunnel measurement system that measures physical quantities at a plurality of measurement points in a tunnel, the measurement point unit including a portable stand and a stand attached to the stand. a sensor unit that is attached to the stand and detects a physical quantity; a physical quantity acquisition unit that is attached to the stand and acquires a physical quantity according to the physical quantity detected by the sensor unit and a reference physical quantity; and a branch transmission path to the physical quantity acquisition unit. a measurement point transmission connector connected to the stand so as to transmit a reference physical quantity, a measurement point processing unit attached to the stand and processing the physical quantity acquired by the physical quantity acquisition unit into a communicable signal, and the measurement point This is a measurement point unit that includes a measurement point communication connector communicably connected to a processing unit via a branch communication cable.

In a twenty-seventh aspect, in the twenty-sixth aspect, the measurement point processing unit includes a processing unit that converts the analog signal of the physical quantity acquired by the physical quantity acquisition unit into a communicable digital signal. It is a point unit.

A twenty-eighth aspect is a measurement point unit according to the twenty-sixth or twenty-seventh aspect, wherein the sensor section is a pressure sensor that detects pressure.

A twenty-ninth aspect is the in-tunnel measurement system according to any of the twenty-sixth to twenty-eighth aspects, wherein the sensor section includes a sensor that detects static pressure.

A 30th aspect is the in-tunnel measurement system according to any of the 26th to 29th aspects, wherein the sensor section includes a pitot tube.

In a 31st aspect, in any of the 26th to 30th aspects, the physical quantity acquisition unit is a differential pressure gauge that acquires a differential pressure between pressure and a reference pressure, and the branch transmission line is an air tube. It is a point unit.

A 32nd aspect is the measurement point unit according to any of the 26th to 31st aspects, wherein a branch power supply cable for supplying power from a power source is electrically connected to the measurement point unit. be.

A thirty-third aspect is a measurement point unit used for an in-tunnel measurement system that measures physical quantities at a plurality of measurement points in a tunnel, wherein the measurement point unit includes a portable stand and a a sensor unit that is attached to the stand and detects a physical quantity; a physical quantity acquisition unit that is attached to the stand and acquires a physical quantity according to the physical quantity detected by the sensor unit and a reference physical quantity; and a branch transmission path to the physical quantity acquisition unit. a measurement point transmission connector connected to the stand so as to be able to transmit a reference physical quantity; and a measurement point processing unit attached to the stand and processing the physical quantity acquired by the physical quantity acquisition unit into a communicable signal. This is a measurement point unit consisting of:

A 34th aspect is a measurement point unit according to the 33rd aspect, including a transmitting section that wirelessly transmits the signal processed by the measurement point processing section to an external device.

A thirty-fifth aspect is a measurement point unit control device that controls a plurality of measurement point units arranged at each of a plurality of measurement points in a tunnel, and instructs the measurement point unit to acquire measurement values. a transmitting unit that intermittently transmits a measurement value acquisition instruction signal for the measurement, and an identification unit that is intermittently transmitted from the measurement point unit in response to the measurement value acquisition instruction signal and that identifies the updated measurement value and measurement point unit. a receiving unit that receives an updated measurement value signal including a code; a display unit that individually displays the transmission/reception status of each of the plurality of measurement point units; A first display indicating that measurement value acquisition has been instructed to the measurement point unit is individually displayed, and each time the updated measurement value signal is received, the measurement value is updated in the corresponding measurement point unit. and a display control section that controls the display of the display section so that a second display indicating the above is displayed individually and distinguishably from the first display.

A thirty-sixth aspect is the control device for the measurement point unit according to the thirty-fifth aspect, wherein the display section is controlled to display the first display and the second display in different colors, respectively. be.

In a thirty-seventh aspect, in the thirty-fifth or thirty-sixth aspect, the display section displays the measurement value acquired by the corresponding measurement point unit using the first display or the second display as a background color. This is a control device for the measurement point unit.

A thirty-eighth aspect is the control device for the measurement point unit according to any of the thirty-fifth to thirty-seventh aspects, wherein an operation button for transmitting the measurement value acquisition instruction signal is arranged on the display screen.

A thirty-ninth aspect is that in any of the thirty-fifth to thirty-eighth aspects, a plurality of individual display units respectively associated with the plurality of measurement point units are arranged on the display screen, and the display control unit Every time the measurement value acquisition instruction signal is transmitted intermittently, a first display indicating that measurement value acquisition has been instructed to the corresponding measurement point unit is displayed on the individual display section corresponding to the measurement point unit. and each time the updated measurement value signal is received, a second display indicating that the measurement value has been updated in the corresponding measurement point unit corresponds to the measurement point unit so as to be distinguishable from the first display. This is a control device for a measurement point unit that controls the display of the display section as performed on the individual display section.

In a 40th aspect, in any of the 35th to 39th aspects, the plurality of measurement point units are connected in series to a communication cable through which the measurement value acquisition instruction signal and the update measurement value signal are transmitted, and the plurality of measurement point units are The measurement point unit is a control device for transmitting the updated measurement value signals from each of the measurement point units at staggered transmission times so as to avoid crosstalk within the communication cable.

According to the first to thirty-fourth aspects, it is possible to easily install and remove measuring equipment when measuring the distribution of physical quantities within a tunnel. Further, according to the 35th to 40th aspects, it is possible to monitor the measurement state by the measuring device when controlling the measurement of the physical quantity distribution in the tunnel.

FIG. 1 is a diagram showing the overall configuration of an in-tunnel measurement system. FIG. 2 is a block diagram showing the configuration of the measurement point unit. FIG. 3A is a block diagram showing the configuration of the reference measurement point unit. FIG. 3B is a block diagram showing the configuration of a reference measurement point unit that also functions as a measurement point unit. FIG. 4 is a block diagram showing the configuration of the central measurement section. FIG. 5A is a diagram showing the configuration of a transmission path. FIG. 5B is a diagram showing the configuration of a transmission path. FIG. 6A is a diagram showing the configuration of a communication cable. FIG. 6B is a diagram showing the configuration of a communication cable. FIG. 7A is a diagram showing the configuration of a power supply, a power supply cable, and a branch power supply cable. FIG. 7B is a diagram showing the configuration of a power supply cable and a branch power supply cable. FIG. 8 is a perspective view showing the appearance of a configuration example of the measurement point unit. FIG. 9 is a diagram illustrating a partial configuration of the measurement point unit shown in FIG. 8. FIG. 10 is a perspective view showing the appearance of a configuration example of the reference measurement point unit. FIG. 11 is a diagram illustrating a partial configuration of the reference measurement point unit shown in FIG. 10. FIG. 12 is a diagram showing the appearance of a configuration example of the central measurement section. FIG. 13 is a block diagram illustrating the hardware configuration when the arithmetic processing section is configured with a personal computer. FIG. 14 is a block diagram showing the functional configuration of a control device that controls the measurement point unit and the reference measurement point unit. FIG. 15 is a diagram showing a control screen. 16A, FIG. 16B, FIG. 16C, FIG. 16D, and FIG. 16E respectively show a measurement value acquisition instruction signal transmitted from the central measurement unit, and a measurement point N (N=1, 2, . . . ) received by the central measurement unit. 19), an updated measurement value signal of measurement point N+1 received by the central measurement unit, a display state of the individual display unit DN, and a timing chart showing the display state of the individual display unit DN+1. FIG. 17 is a diagram showing part of the data stored in the storage, and is a diagram showing the differential pressure distribution at the same time in the tunnel.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an in-tunnel measurement system, a measurement point unit, and a control device for the measurement point unit according to the present invention will be described.

The first embodiment will be described below.

(First embodiment)

(Tunnel measurement system)

FIG. 1 shows the overall configuration of an in-tunnel measurement system 1. FIG. 1 is a top view of the tunnel TN. Each component of the in-tunnel measurement system 1 is arranged within the tunnel TN.

The tunnels targeted in the embodiment include not only tunnels for motorways and railways, but also tunnels for arbitrary purposes such as waterways and humanitarian tunnels.

The in-tunnel measurement system 1 measures physical quantities at a plurality of (for example, 20) measurement points PT1 (reference measurement points PTS), PT2, ... PT20 in the tunnel TN, such as static pressure P and the like at a plurality of measurement points PT1 to PT20. This is a measurement system that measures the pressure difference between the reference static pressure Ps and the reference static pressure Ps at the reference measurement point PTS. Note that the ventilation characteristic value of the jet fan JF is measured based on the measured differential pressure ΔP.

The tunnel measurement system 1 mainly includes a plurality of measurement point units 100, a reference measurement point unit 100S, a central measurement section 200, a transmission line 300, a communication cable 400, a power supply 500, and a power supply cable 600. , and a branch power supply cable 610.

FIG. 2 is a block diagram showing the configuration of the measurement point unit 100.

Each of the plurality of measurement point units 100 is arranged for each of the plurality of measurement points PT2, . . . PT20. Note that the configuration of the measurement point unit 100S arranged at the measurement point PT1 serving as the reference measurement point PTS will be described later with reference to FIGS. 3A and 3B.

Each of the plurality of measurement point units 100 includes a sensor section 110, a physical quantity acquisition section 120, a measurement point transmission connector 130, a measurement point processing section 140, and a measurement point communication connector 150.

The sensor unit 110 detects a physical quantity, such as pressure. The sensor section 110 includes a pitot tube 111. As the pitot tube 111, a pitot static pressure tube that detects static pressure P can be used. Note that the sensor section 110 only needs to be a pressure sensor that detects pressure, and implementation using a pressure sensor other than the pitot tube 111 is also possible. Further, the sensor unit 110 may be one that detects a physical quantity other than pressure, such as temperature, and the present embodiment can be applied in place of the other physical quantity.

The physical quantity acquisition unit 120 acquires the physical quantity detected by the sensor unit 110 and the physical quantity according to the reference physical quantity. The physical quantity acquisition unit 120 includes, for example, a differential pressure gauge 121. The differential pressure gauge 121 obtains the differential pressure ΔP between the static pressure P detected by the sensor unit 110 and the reference static pressure Ps.

The measurement point transmission connector 130 is connected to the physical quantity acquisition unit 120 so as to be able to transmit the reference physical quantity. The reference physical quantity is, for example, the reference static pressure Ps. The measurement point transmission connector 130 and the physical quantity acquisition unit 120 are connected by a branch transmission line 131 that transmits a signal (air) indicating the reference static pressure Ps. The branch transmission line 131 is composed of, for example, an air tube.

The measurement point processing unit 140 processes the analog signal of the physical quantity acquired by the physical quantity acquisition unit 120, for example, the differential pressure ΔP acquired by the differential pressure gauge 121, into a communicable signal. The measurement point processing unit 140 includes a processing unit 141 that converts an analog signal of a physical quantity acquired by the physical quantity acquisition unit 120, for example, an analog signal SA of the differential pressure ΔP acquired by the differential pressure gauge 121, into a communicable digital signal SD. Contains. The measurement point processing unit 140 can be configured with a microcontroller, for example. Furthermore, the processing section 141 can be configured with, for example, an A/D converter.

The measurement point communication connector 150 is communicably connected to the measurement point processing section 140. The measurement point communication connector 150 and the measurement point processing unit 140 are connected by a branch communication cable 151 through which digital electrical signals for transmission and reception are supplied.

FIG. 3A is a block diagram showing the configuration of the reference measurement point unit 100S.

The reference measurement point unit 100S is arranged at a reference measurement point PTS, for example, measurement point PT1, from which a reference physical quantity, for example, a reference static pressure Ps is acquired.

The reference measurement point unit 100S includes a reference sensor section 110S and a reference measurement point transmission connector 130S.

The reference sensor section 110S detects a reference value of the same physical quantity as the sensor section 110, for example, a reference pressure. The reference sensor section 110S includes a pitot tube 111. As the pitot tube 111, a pitot static pressure tube that detects the reference static pressure Ps can be used. Note that the reference sensor section 110S may be any pressure sensor that detects pressure, and it is also possible to use a pressure sensor other than the pitot tube 111. Further, the reference sensor section 110S may be one that detects a physical quantity other than pressure, such as temperature, and the present embodiment can be applied in place of the other physical quantity.

The reference measurement point transmission connector 130S is connected to be able to transmit the reference physical quantity from the reference sensor section 110S. The reference physical quantity is, for example, the reference static pressure Ps. The reference sensor section 110S and the reference measurement point transmission connector 130S are connected by a branch transmission line 131S that transmits a signal (air) indicating the reference static pressure Ps. The branch transmission line 131S is composed of, for example, an air tube.

Note that the reference measurement point unit 100S may also serve as the function of the measurement point unit 100, and it is also possible to replace any one of the plurality of measurement point units 100 with the reference measurement point unit 100S.

FIG. 3B is a block diagram showing the configuration of a reference measurement point unit 100S that also functions as the measurement point unit 100. Components that are the same as those in FIGS. 2 and 3A are given the same reference numerals, and description thereof will be omitted as appropriate. The reference measurement point unit 100S is arranged at the measurement point PT1 (reference measurement point PTS).

The reference sensor section 110S and the reference measurement point transmission connector 130S are connected by a branch transmission line 131S that transmits a signal (air) indicating the reference static pressure Ps. The physical quantity acquisition unit 120 includes, for example, a differential pressure gauge 121. The differential pressure gauge 121 obtains the differential pressure ΔP (=0) between the static pressure P (=Ps) detected by the reference sensor section 110S and the reference static pressure Ps.

FIG. 4 is a block diagram showing the configuration of the central measurement section 200.

The central measurement unit 200 is placed at a predetermined position PTC within the tunnel TN.

The central measurement unit 200 includes a calculation processing unit 210 and a communication connector 220 for the calculation processing unit.

The calculation processing unit 210 performs calculation processing on a physical quantity, for example, differential pressure ΔP, acquired for each of the plurality of measurement point units 100. The arithmetic processing unit 210 is composed of, for example, a personal computer 211.

The arithmetic processing unit communication connector 220 is communicably connected to the arithmetic processing unit 210 via a branch communication cable 221.

5A and 5B show the configuration of the transmission line 300. 5A and 5B are side views of the tunnel TN, showing how the transmission path 300 is arranged along the longitudinal direction of the tunnel TN. FIG. 5A shows a state before the transmission path 300 is connected to the plurality of measurement point units 100 and the reference measurement point unit 100S, and FIG. 5B shows the state before the transmission path 300 is connected to the plurality of measurement point units 100 and the reference measurement point unit 100S. Shows the state after connecting.

The transmission path 300 is configured to connect the measurement point transmission connector 130 and the reference measurement point transmission connector 130S in series so that the reference physical quantity can be transmitted. The transmission line 300 is composed of an air tube that transmits air indicating a reference static pressure Ps as a reference physical quantity.

The transmission path 300 includes a plurality of measurement point-to-point transmission paths 300P each having a length corresponding to the distance between each measurement point. Male ports 311A and 311B connectable to the female ports 132A and 132B of the measurement point transmission connector 130 and the reference measurement point transmission connector 130S are provided at both ends of the measurement point-to-measurement point transmission path 310, respectively.

The measurement point transmission connector 130 is formed in a T-shape with three openings, and includes female openings 132A and 132B that open on opposite sides. The reference measurement point transmission connector 130S includes at least a female port 132B.

One female port 132A of the measurement point transmission connector 130 is connected to the male port 311A of the measurement point-to-point transmission path 300P arranged on the same side with the measurement point unit 100 interposed therebetween. The other female port 132B of the measurement point transmission connector 130 and the reference measurement point transmission connector 130S is the male port of the measurement point-to-measurement point transmission path 300P placed on the other side with the measurement point unit 100 and the reference measurement point unit 100S in between. 311B. As a result, the transmission path 300 communicates with the branch transmission paths 131 and 131S via the measurement point transmission connector 130 and the reference measurement point transmission connector 130S, respectively.

6A and 6B show the configuration of communication cable 400. 6A and 6B are side views of the tunnel TN, showing how the communication cable 400 is arranged along the longitudinal direction of the tunnel TN. FIG. 6A shows a state before the communication cable 400 is connected to the plurality of measurement point units 100, the reference measurement point unit 100S, and the central measurement section 200, and FIG. 6B shows the state before the communication cable 400 is connected to the plurality of measurement point units 100, the reference measurement point unit 100S, and the reference measurement point unit The state after the communication cable 400 is connected to the 100S and the central measurement unit 200 is shown.

Communication cable 400 is a digital signal communication cable. The communication cable 400 is configured to communicably connect the measurement point communication connector 150 and the arithmetic processing unit communication connector 220 in series.

The communication cable 400 includes a plurality of measurement point-to-point communication cables 400P each having a length corresponding to the distance between each measurement point. Male terminals 411A and 411B connectable to female terminals 152A and 152B of the measurement point communication connector 150 and the arithmetic processing unit communication connector 220 are provided at both ends of the measurement point-to-point communication cable 400P, respectively. Note that a 10-pole connector, for example, can be used as the measurement point communication connector 150 and the arithmetic processing unit communication connector 220.

The measurement point communication connector 150 and the arithmetic processing unit communication connector 220 are configured to include female terminals 152A and 152B arranged in opposite directions with an interterminal communication cable 153 in between. Note that the female terminals 152A of the measurement point communication connector 150 and the arithmetic processing unit communication connector 220 are electrically connected to the branch communication cables 151 and 221, respectively.

One female terminal 152A of the measurement point communication connector 150 and the arithmetic processing section communication connector 220 is the male terminal 411A of the measurement point-to-point communication cable 400P placed on the same side with the measurement point unit 100 and the central measurement section 200 in between. connected to. The other female terminal 152B of the measurement point communication connector 150 and the arithmetic processing section communication connector 220 is used for communication between measurement points arranged on the other side with the measurement point unit 100, the standard measurement point unit 100S, and the central measurement section 200 in between. It is connected to the male terminal 411B of the cable 400P. Thereby, the communication cable 400 is electrically connected to the branch communication cables 151 and 221 via the measurement point communication connector 150 and the arithmetic processing unit communication connector 220, respectively.

7A and 7B show configurations of a power supply 500, a power supply cable 600, and a branch power supply cable 610. 7A is a diagram showing the arrangement along the longitudinal direction of the tunnel TN, and FIG. 7B is a diagram showing the arrangement along the lining cross section of the tunnel TN, which is a sectional view taken along the line AA in FIG. 7A.

Power supply 500 is electrically connected in series to power supply cable 600 via electrician reel 510 .

The electrician reel 510 is arranged, for example, on each side of the plurality of measurement point units 100, the reference measurement point unit 100S, and the central measurement section 200.

The electrician reel 510 connects to the measurement point processing section 140 of the plurality of measurement point units 100 and the measurement point processing section of the reference measurement point unit 100S via a branch power supply cable 610, an AC adapter 180, and a measuring device power supply cable 190. 140 and are electrically connected to each of the arithmetic processing units 210 of the central measurement unit 200.

The power source 500 can use a generator. Electric power is supplied from the power supply 500 to the measurement point processing unit 140 of the plurality of measurement point units 100 and the reference via the power supply cable 600, electrician reel 510, branch power supply cable 610, AC adapter 180, and measurement equipment power supply cable 190. It is supplied to the measurement point processing section 140 of the measurement point unit 100S and the calculation processing section 210 of the central measurement section 200, respectively. AC adapter 180 converts AC power into DC power of a predetermined voltage. The measurement point processing section 140 of the plurality of measurement point units 100, the measurement point processing section 140 of the reference measurement point unit 100S, and the arithmetic processing section 210 of the central measurement section 200 operate using the supplied DC power of a predetermined voltage.

(Measurement point unit)

FIG. 8 is a diagram showing an example of the configuration of the measurement point unit 100, and shows the external appearance in a perspective view. FIG. 9 is a diagram illustrating a partial configuration of the measurement point unit 100 shown in FIG. 8.

The measurement point unit 100 mainly includes a portable stand 160 , a sensor unit 110 attached to the top of the stand 160 , a measuring device housing 170 attached to the center of the stand 160 , and a bottom end of the stand 160 . It is configured to include a measurement point transmission connector 130 disposed at the bottom end of the stand 160 and a measurement point communication connector 150 disposed at the lower end of the stand 160.

For example, a three-legged pole stand can be used as the stand 160. A stand pole 162 is attached to stand on the base 161. Note that as the stand 160, any type of stand such as a tripod can be used.

The sensor section 110 and the measuring device housing 170 are attached to the stand 160 using fastening members 181 and 182, respectively. The fastening member 181 is fastened and fixed to the stand pole 162 and also fastened and fixed to the sensor section 110. Similarly, the fastening member 182 is fastened and fixed to the stand pole 162 and also fixed to the measuring instrument casing 170.

A physical quantity acquisition section 120 and a measurement point processing section 140 are arranged within the measuring device housing 170. The measuring device housing 170 is provided with a display section 171. The display section 171 is composed of, for example, a liquid crystal display. A display surface 171A of the display section 171 is provided on the outside of the measuring instrument housing 170 so as to be visible.

The sensor section 110 and the physical quantity acquisition section 120 in the measuring instrument housing 170 are connected by a sensor-to-casing transmission path 133. As a result, a signal indicating the static pressure P detected by the sensor unit 110 is input to the physical quantity acquisition unit 120.

The measurement point transmission connector 130 and the physical quantity acquisition unit 120 in the measurement device casing 170 are connected by a branch transmission path 131. As a result, a signal indicating the reference static pressure Ps is input to the physical quantity acquisition unit 120. The physical quantity acquisition unit 120 acquires an analog signal SA of the differential pressure ΔP between the input detected static pressure P and the input reference static pressure Ps.

A measuring device power supply cable 190 and an AC adapter 180 are electrically connected to the measuring point processing section 140 . The measurement point communication connector 150 and the measurement point processing section 140 in the measuring device housing 170 are electrically connected by a branch communication cable 151.

The measurement point processing unit 140 operates using DC power of a predetermined voltage supplied via the AC adapter 180 and the measurement equipment power supply cable 190. The measurement point processing unit 140 executes predetermined processing according to the signal received via the branch communication cable 151. The measurement point processing unit 140 sends a signal indicating the processing result to the branch communication cable 151.

When the analog signal SA of the differential pressure ΔP is acquired by the physical quantity acquisition unit 120, the measurement point processing unit 140 takes in the analog signal SA of the differential pressure ΔP via the signal line 129 and converts it into a digital signal SD of the differential pressure ΔP. do. The measurement point processing unit 140 controls the display so that the numerical value of the differential pressure ΔP is displayed on the display surface 171A of the display unit 171.

(Reference measurement point unit)

FIG. 10 is a diagram showing an example of the configuration of the reference measurement point unit 100S, and shows the external appearance in a perspective view. FIG. 11 is a diagram illustrating a partial configuration of the reference measurement point unit 100S shown in FIG. 10. 10 and 11 illustrate the configuration of a reference measurement point unit 100S that also functions as the measurement point unit 100.

Description of the same configuration as that of the measurement point unit 100 shown in FIGS. 8 and 9 will be omitted.

The reference sensor section 110S and the physical quantity acquisition section 120 in the measuring device housing 170 are connected by a sensor-to-casing transmission path 133. As a result, a signal indicating the static pressure P (=reference static pressure Ps) detected by the reference sensor unit 110S is input to the physical quantity acquisition unit 120. The reference sensor section 110S and the physical quantity acquisition section 120 are connected by a branch transmission line 131 that transmits a signal (air) indicating the reference static pressure Ps. As a result, a signal indicating the reference static pressure Ps is input to the physical quantity acquisition unit 120. The physical quantity acquisition unit 120 acquires an analog signal SA of the differential pressure ΔP (=0) between the input detected static pressure P (=reference static pressure Ps) and the input reference static pressure Ps. The reference sensor section 110S and the reference measurement point transmission connector 130S are connected by a branch transmission line 131S that transmits a signal (air) indicating the reference static pressure Ps.

(Central measurement department)

FIG. 12 is a perspective view showing an example of the configuration of the central measurement unit 200, showing its appearance.

A measuring device power supply cable 190 and an AC adapter 180 are electrically connected to the arithmetic processing unit 210 (for example, a personal computer 211). The arithmetic processing unit communication connector 220 and the arithmetic processing unit 210 (for example, the personal computer 211) are electrically connected by a branch communication cable 221.

The arithmetic processing unit 210 (for example, the personal computer 211) operates using DC power of a predetermined voltage supplied via the AC adapter 180 and the measuring device power supply cable 190. The arithmetic processing unit 210 (for example, the personal computer 211) executes predetermined processing according to the signal received via the branch communication cable 221. The arithmetic processing unit 210 (for example, the personal computer 211) sends a signal indicating the processing result to the branch communication cable 221.

FIG. 13 is a block diagram illustrating a hardware configuration when the arithmetic processing unit 210 is configured by a personal computer 211.
As shown in FIG. 13, the personal computer 211 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a storage 14, an input device 16, a display device 17, and a communication I/O. F (interfaces) 18 are connected to each other via a system bus 15 so as to be able to communicate with each other.
The CPU 11 is a central processing unit that executes various programs and controls each device connected to the system bus 15. That is, the CPU 11 reads a program from the ROM 12 or the storage 14 and executes the program using the RAM 13 as a work area. The CPU 11 controls each device connected to the system bus 15 and performs various calculation processes according to programs recorded in the ROM 12 or the storage 14. The ROM 12 or storage 14 includes a BIOS (Basic Input/Output System) and an OS (Operating System), which are control programs executed by the CPU 11, as well as computer-readable and executable programs for realizing this embodiment. and holds various necessary data.

The ROM 12 stores various control programs and various data. The RAM 13 functions as a main memory, work area, etc. of the CPU 11, and temporarily stores programs or data as a work area. The storage 14 is configured with an HDD (Hard Disk Drive) or an SSD (Solid State Drive), and stores various programs including a BIOS and an OS, and various data.

The input device 16 includes a pointing device such as a mouse and a keyboard, and is used to perform various inputs.

The display device 17 is, for example, a liquid crystal display, and displays various information. The display device 17 may adopt a touch panel method and function as the input device 16.

Various screens to be described later are displayed on the display screen of the display device 17.

The communication interface 18 is an interface for communicating with other measurement devices, that is, the measurement point unit 100 and the reference measurement point unit 100S, and uses, for example, standards such as Ethernet (registered trademark), FDDI, Wi-Fi (registered trademark), etc. is used. The communication interface 18 controls data transmission and reception according to a predetermined communication protocol.

(Control device)

FIG. 14 is a block diagram showing the functional configuration of the control device 2 that controls the measurement point unit 100 and the reference measurement point unit 100S. The functional configuration of the control device 2 is provided by a personal computer 211 as an arithmetic processing section 210. The functions of the control device 2 are realized by the hardware shown in FIG. 13 and the software stored in the ROM 12 or storage 14 shown in FIG.

The control device 2 includes a transmitting section 21, a receiving section 22, a display section 23, and a display control section 24.

The transmitter 21 intermittently transmits a measurement value acquisition instruction signal for instructing each measurement point unit 100 and the reference measurement point unit 100S to acquire measurement values.

The receiving unit 22 specifies the updated measurement values that are intermittently transmitted from each measurement point unit 100 and the reference measurement point unit 100S in response to measurement value acquisition instruction signals, and the measurement point unit 100 and the reference measurement point unit 100S. Receive an updated measurement value signal containing a specific code.

The display unit 23 individually displays the transmission and reception status of the reference measurement point unit 100S installed at the measurement point PT1, the measurement point unit 100 installed at the measurement point PT2, . . . the measurement point unit 100 installed at the measurement point PT20. indicate.

Each time the measurement value acquisition instruction signal is intermittently transmitted, the display control unit 24 displays a first display indicating that measurement value acquisition has been instructed to the corresponding measurement point unit 100 and reference measurement point unit 100S. are individually displayed, and each time an updated measurement value signal is received, a second display indicating that the measurement value has been updated in the corresponding measurement point unit 100 and reference measurement point unit 100S is distinguished from the first display. The display on the display unit 23 is controlled so that the images are displayed individually if possible.

Below, the procedure from installation to removal of the tunnel measurement system 1 will be explained.

(Installation of measuring equipment)

As shown in FIG. 1, for example, a reference measurement point unit 100S is installed at a reference measurement point PT1 (PTS) on one entrance/exit side of a tunnel TN to be measured. A measurement point unit 100 is installed at each measurement point PT2, . . . PT20 along the longitudinal direction of the tunnel from one entrance to the other entrance in the tunnel TN.

The central measurement unit 200 is installed at a point PTC between measurement point PT7 and measurement point PT8.

(Cable connection)

As shown in FIGS. 5A and 5B, the male port 311A of the measurement point-to-point transmission path 300P is connected to one female port 132A of the measurement point transmission connector 130 of the measurement point unit 100. Similarly, the male port 311B of the inter-measurement point transmission path 300P is connected to the other female port 132B of the measurement point transmission connector 130 of the measurement point unit 100 and the reference measurement point transmission connector 130S of the reference measurement point unit 100S.

As shown in FIGS. 6A and 6B, one female terminal 152A of the measurement point communication connector 150 of the measurement point unit 100 and the arithmetic processing section communication connector 220 of the central measurement section 200 is connected to the male terminal of the measurement point-to-point communication cable 400P. Connect terminal 411A. Similarly, the measurement point communication connector 150 of the reference measurement point unit 100S, the measurement point communication connector 150 of the measurement point unit 100, and the other female terminal 152B of the arithmetic processing section communication connector 220 of the central measurement section 200 are connected to the measurement point communication connector 150 of the reference measurement point unit 100S. Connect the male terminal 411B of the communication cable 400P.

As shown in FIGS. 7A and 7B, a power supply 500 is installed at a predetermined location in the tunnel TN, and an electrician reel 510 is placed to the side of the installation locations of the measurement point unit 100, reference measurement point unit 100S, and central measurement section 200. Install each. Each electrician reel 510 is electrically connected in series by a power supply cable 600.

One end of the branch power supply cable 610 is electrically connected to the electrician reel 510, and the other end of the branch power supply cable 610 is electrically connected to the AC adapter 180.

(Control of measurement point unit and reference measurement point unit)

The control of the measurement point unit 100 and the reference measurement point unit 100S will be explained below.

(Display of control screen)

When the personal computer 211 (arithmetic processing unit 210) located in the central measurement unit 200 is started and the program stored in the ROM 12 or storage 14 is executed, the display screen of the display device 17 is displayed as a control screen shown in FIG. Transition to screen 700.

A control screen 700 shown in FIG. 15 includes a transmission/reception status display section 710, a measured value distribution display section 720, a measured value acquisition instruction section 730, and a measured value acquisition stop instruction section 740.

The transmission/reception status display section 710 corresponds to the display section 23. The transmission/reception status display section 710 displays the transmission/reception status of each of the reference measurement point unit 100S installed at the measurement point PT1, the measurement point unit 100 installed at the measurement point PT2, . . . the measurement point unit 100 installed at the measurement point PT20. Display individually.

The transmission/reception status display section 710 shows the reference measurement point unit 100S installed at the measurement point PT1, the measurement point unit 100 installed at the measurement point PT2, . . . the measurement point unit 100 installed at the measurement point PT20, respectively. Associated individual display sections D1, D2, . . . D20 are arranged. The individual display section D1 individually displays the transmission/reception status of the reference measurement point unit 100S installed at the measurement point PT1. The individual display section D2 individually displays the transmission/reception status of the measurement point unit 100 installed at the measurement point PT2. Similarly, the individual display sections D3 to D20 individually display the transmission and reception status of the measurement point units 100 installed at the measurement points PT3 to PT20, respectively. In the individual display sections D3 to D20, the measurement value ΔP acquired by the corresponding measurement point unit 100 or reference measurement point unit 100S is displayed on the first display DS1 (shown in white in FIG. 15) or on the second display DS1 (shown in white in FIG. 15). Display DS2 (shown by hatching (light blue) in FIG. 15) is displayed as the background color.

The measurement value distribution display unit 720 displays each of the X-axis positions PT1 to PT20 of one axis X as each measurement point PT1 to PT20, and the Y-axis value of the other axis Y as a differential pressure ΔP to each measurement point PT1 to PT20. The distribution of the differential pressure ΔP acquired at each PT20 is displayed as a bar graph.

The measurement value acquisition instruction section 730 corresponds to the transmission section 21. The measurement value acquisition instruction section 730 functions as an operation button. When the measurement value acquisition instruction section 730 is clicked, for example, the measurement value acquisition instruction signal S1 is intermittently transmitted. The measurement value acquisition instruction signal S1 instructs the measurement point unit 100 and the standard measurement point unit 100S to acquire the measurement value ΔP, and also sends the acquired measurement value ΔP to its own measurement point unit (or reference measurement point unit). This is a signal requesting transmission in association with a specified identification code ID.

The measurement value acquisition stop instruction section 740 is a signal for instructing to stop transmitting the measurement value acquisition instruction signal S1.

(Transmission of measurement value acquisition instruction signal)

The operator clicks on the measurement value acquisition instruction section 730. As a result, the measurement value acquisition instruction signal S1 is intermittently transmitted to the measurement point unit 100 and the reference measurement point unit 100S.

16A, FIG. 16B, FIG. 16C, FIG. 16D, and FIG. 16E show the measurement value acquisition instruction signal S1 transmitted from the central measurement unit 200, the measurement point PTN (N=1, 2, . . 19) Timing indicating the updated measurement value signal SrN, the updated measurement value signal SrN+1 of the measurement point PTN+1 received by the central measurement unit 200, the display state DS of the individual display section DN, and the display state DS of the individual display section DN+1 It is a chart.

The following description will be made with reference to FIGS. 16A, 16B, 16C, 16D, and 16E.

When the measurement value acquisition instruction section 730 is clicked, the measurement value acquisition instruction signal S1 is transmitted via the communication cable 400 to the measurement point unit 100 and the reference measurement point unit 100S of all measurement points at a fixed time interval τ (for example, 2 seconds). ) (see times t10, t20, t30 in FIG. 16A).

Each time the central measurement unit 200 intermittently transmits the measurement value acquisition instruction signal S1, the display DS of the individual display units D1 to D20 changes to light blue (hatched in FIG. The second display DS2 (shown) switches to the first display DS1 of white (see times t10, t20, and t30 in FIGS. 16D and 16E).

When the measurement value acquisition instruction signal S1 is transmitted from the central measurement unit 200 via the communication cable 400, the measurement point processing units 140 of the measurement point units 100 and the reference measurement point units 100S of all measurement points acquire the measurement values. The instruction signal S1 is received almost simultaneously (see time t10 in FIG. 16A).

When the measurement point processing unit 140 of the measurement point unit 100 and the reference measurement point unit 100S of all the measurement points receives the measurement value acquisition instruction signal S1, the measurement point processing unit 140 of the measurement point unit 100 of all measurement points receives the measurement value acquisition instruction signal S1, and in accordance with the instruction indicated by the measurement value acquisition instruction signal S1, from the physical quantity acquisition unit 120. The analog signal SA of the differential pressure ΔP is taken in and converted into a digital signal SD of the differential pressure ΔP, for example, a 10-bit digital value SD. Therefore, the measurement values ΔP at all measurement points PT1 to PT20 are obtained by the measurement point processing unit 140 almost simultaneously.

Next, the measurement point processing units 140 of the measurement point units 100 and the reference measurement point units 100S of all the measurement points, in accordance with the instruction indicated by the measurement value acquisition instruction signal S1, calculate the measurement value ΔP with its own identification code ID1, ID2, ...Sr1, Sr2, ...SrN, SrN+1, ..., Sr20 are transmitted in association with IDN, IDN+1, ID20.

However, the updated measurement value signals Sr1, Sr2, ...SrN, SrN+1, ..., Sr20 from the plurality of measurement point units PT1, PT2, ... PTN, PTN+1 ..., PT20 are mixed in the communication cable 400. The transmission times are sequentially shifted by a predetermined delay time Δt (for example, 0.1 seconds) to prevent the transmission from occurring.

For example, in the measurement point unit 100 of the measurement point PTN, the updated measurement value signal SrN is transmitted to the communication cable 400 after being shifted by the delay time (N-1)·Δt according to its own identification code IDN (time in FIG. 16B). (See t11). Next, the measurement point unit 100 at the measurement point PTN+1 transmits the updated measurement value signal SrN+1 to the communication cable 400 after being shifted by the delay time N·Δt according to its own identification code IDN+1 (see time t12 in FIG. 16C). .

Every time the central measurement unit 200 receives the updated measurement value signals Sr1 to Sr20, the display DS of the corresponding individual display units D1 to D20 respectively switches from the first display DS1 to the second display DA2. For example, when the updated measurement value signal SrN transmitted from the measurement point unit 100 of the measurement point PTN or the reference measurement point unit 100S is received, the arithmetic processing unit 210 changes the display DS of the corresponding individual display unit DN to the first The display is controlled to switch from display DS1 to second display DA2 (see times t11, t21, and t31 in FIG. 16D). Similarly, when the updated measurement value signal SrN+1 transmitted from the measurement point unit 100 of the measurement point PTN+1 is received, the arithmetic processing unit 210 changes the display DS of the corresponding individual display unit DN+1 from the first display DS1 to the second display DS1. The display is controlled so as to switch to the display DA2 (see times t12, t22, and t32 in FIG. 16E). Note that the second display DS2 may be any display that can be distinguished from the first display DS1. It is possible to display the first display DS1 and the second display DS2 in arbitrary different colors, or display arbitrary different brightness and saturation.

When the updated measurement value signals Sr1, Sr2,...SrN, SrN+1..., Sr20 are received by the central measurement unit 200, the arithmetic processing unit 210 extracts the measurement value ΔP and displays the response in the transmission/reception status display unit 710. A process is executed to display the differential pressure ΔP on the individual display sections D1, D2, . . . DN, DN+1 . . . , D20. For example, when the calculation processing unit 210 receives the updated measurement value signal SrN (see time t11 in FIG. 16B), the calculation processing unit 210 displays the second The updated differential pressure value ΔP is displayed using display DS2 as the background color (see time t11 in FIG. 16D). Similarly, upon receiving the updated measurement value signal SrN+1 (see time t12 in FIG. 16C), the arithmetic processing unit 210 displays the second display DS2 in the background color on the individual display unit DN+1 corresponding to the measurement point unit 100 of the measurement point PTN+1. The updated differential pressure value ΔP is displayed as (see time t12 in FIG. 16E).

Further, when the central measurement unit 200 receives the updated measurement value signals Sr1, Sr2,...SrN, SrN+1..., Sr20, the arithmetic processing unit 210 extracts the measurement value ΔP and displays it in the measurement value distribution display unit 720. Y-axis values corresponding to the differential pressure ΔP are displayed at the corresponding X-axis positions PT1, PT2, . . . PTN, PTN+1 . . . , PT20. Note that the differential pressure value ΔP may be displayed as a 10-bit digital value, or may be converted into a value according to the unit of pressure Pa and displayed.

Since the display is controlled as described above, the operator can check the corresponding measurement by visually confirming that the background color is switched from the first display DS1 to the second display DS2 on the individual display sections D1 to D20. It can be easily confirmed that the measured value ΔP has been updated at points PT1 to PT20. In addition, if the background color of the individual display sections D1 to D20 remains as the first display DS1 and does not switch to the second display DS2, it will immediately indicate that there is a problem with measurement or communication at the corresponding measurement point. It can be confirmed.

Also, by simply checking whether the background color is the first display DS1 or the second display DS2 on the individual display sections D1 to D20, the measured value ΔP displayed on the individual display sections D1 to D20 can be changed. , it is possible to easily check whether the value is before the update or the value after the update.

(Storage of measurement data)

The arithmetic processing unit 210 associates the measured value ΔP with the measurement points PT1 to PT20 and the updated time, and stores the measured value ΔP in the storage 14 one after another at regular time intervals τ (for example, 2 seconds). The measurement points PT1 to PT20 may be converted into the position and distance of the tunnel TN. FIG. 17 is a diagram showing part of the data stored in the storage 14, in which the horizontal axis is the axial distance L from the center position of the jet fan FT, and the vertical axis is the differential pressure ΔP at the same time in the tunnel TN. Shows differential pressure distribution.

According to the embodiment, measurement values at the same time at a plurality of measurement points PT1 to PT20 can be easily obtained and recorded.

(Stopping control of measuring equipment)

The operator clicks on the measurement value acquisition stop instruction section 740. In response to this, transmission of the measurement value acquisition instruction signal S1 is stopped. Note that the transmission of the measurement value acquisition instruction signal S1 may be stopped automatically instead of being done manually. For example, an automatic stop program may be started to stop the transmission of the measured value acquisition instruction signal S1 after a predetermined period of time has elapsed after starting the transmission of the measured value acquisition instruction signal S1.

(Removal of measuring equipment and cables)

Cable connection, removal, and measurement equipment removal are performed in the reverse order of the cable connection and measurement equipment installation described above.

That is, the power supply 500, electrician reel 510, power supply cable 600, branch power supply cable 610 are disconnected from the measurement point unit 100, reference measurement point unit 100S, and central measurement section 200, and the power supply 500, electrician reel 510, and electric power are disconnected from each other. The supply cable 600 and branch power supply cable 610 are removed. Further, the connection between the measurement point-to-point communication cable 400P (communication cable 400), the measurement point unit 100, the standard measurement point unit 100S, and the central measurement section 200 is released, and the measurement point-to-point communication cable 400P (communication cable 400) is removed. Further, the connection between the measurement point-to-point transmission line 300P (transmission line 300), the measurement point unit 100, and the reference measurement point unit 100S is released, and the measurement point-to-point transmission line 300P (transmission line 300) is removed.

Then, the installed measurement point unit 100, reference measurement point unit 100S, and central measurement section 200 are removed.

As described above, according to the first embodiment, the measurement equipment can be easily installed and removed when measuring the pressure distribution in the tunnel TN. Furthermore, when controlling the measurement of the pressure distribution within the tunnel TN, the measurement state by the measuring device can be monitored.

(Second embodiment)

In the first embodiment, a reference measurement point unit 100S is provided, and a reference static pressure Ps as a reference physical quantity is transmitted from the reference measurement point unit 100S to each measurement point unit 100 via a transmission line 300. However, it is also possible to omit the transmission line 300 and the connectors and the like necessary for connecting the transmission line 300. For example, the reference static pressure Ps as a reference physical quantity may be sent from the reference measurement point unit 100S to the central measurement section 200, and the central measurement section 200 may measure the differential pressure ΔP at each measurement point.

(Third embodiment)

In the first embodiment, communication between the central measurement unit 200, the measurement point unit 100, and the reference measurement point unit 100S is performed using a wired communication cable 400. However, it is also possible to omit the communication cable 400 and the connectors necessary for connecting the communication cable 400. For example, wireless signals corresponding to the updated measurement value signals Sr1 to Sr20 processed by the measurement point processing unit 140 are sent from the measurement point unit 100 and the reference measurement point unit 100S to the central measurement unit 200. The information may also be transmitted to the arithmetic processing unit 210. Wireless communication can be performed using standards such as Ethernet (registered trademark), FDDI, Wi-Fi (registered trademark), and the like.

Reference Signs List 100 Measurement point unit 100S Reference measurement point unit 200 Central measurement section 300 Transmission path 400 Communication cable 500 Power supply 600 Power supply cable 610 Branch power supply cable 21 Transmission section 22 Receiving section 23 Display section 24 Display control section

Claims (40)

An in-tunnel measurement system that measures physical quantities at multiple measurement points in a tunnel,
A sensor unit that is arranged at each of the plurality of measurement points and detects a physical quantity, a measurement point processing unit that processes the physical quantity detected by the sensor unit into a communicable signal, and is capable of communicating with the measurement point processing unit. a plurality of measurement point units provided with measurement point communication connectors connected to the
an arithmetic processing unit that arithmetic-processes physical quantities detected by each of the plurality of measurement point units;
a communication connector for an arithmetic processing unit communicatively connected to the arithmetic processing unit;
a communication cable that communicably connects the measurement point communication connector and the arithmetic processing unit communication connector in series;
An in-tunnel measurement system equipped with The measurement point processing unit includes a processing unit that converts an analog signal of the physical quantity detected by the sensor unit into a communicable digital signal.
The in-tunnel measurement system according to claim 1. The sensor unit is a pressure sensor that detects pressure.
The in-tunnel measurement system according to claim 1 or 2. The sensor section includes a sensor that detects static pressure.
The in-tunnel measurement system according to any one of claims 1 to 3. The sensor section includes a pitot tube.
The in-tunnel measurement system according to any one of claims 1 to 4. The measurement point unit is
A portable stand and
the sensor section attached to the stand;
the measurement point processing unit attached to the stand;
the measurement point communication connector communicably connected to the measurement point processing unit via a branch communication cable;
Consisting of
The in-tunnel measurement system according to any one of claims 1 to 5. A power supply cable for supplying power from the power source is arranged, and a branch power supply cable for branching from the power supply cable and supplying power to each of the plurality of measurement point units is arranged.
The in-tunnel measurement system according to any one of claims 1 to 6. An in-tunnel measurement system that measures physical quantities at multiple measurement points in a tunnel,
A sensor unit arranged at each of the plurality of measurement points to detect a physical quantity, a physical quantity acquisition unit that acquires a physical quantity corresponding to the physical quantity detected by the sensor unit and a reference physical quantity, and a reference physical quantity is transmitted to the physical quantity acquisition unit. a plurality of measurement point units provided with measurement point transmission connectors that can be connected to each other;
a reference measurement point unit disposed at a reference measurement point for acquiring a reference physical quantity and provided with a reference sensor section for detecting the reference physical quantity; and a reference measurement point transmission connector connected to enable transmission of the reference physical quantity from the reference sensor section. and,
an arithmetic processing unit that is communicatively connected to each of the plurality of measurement point units and performs arithmetic processing on physical quantities acquired for each of the plurality of measurement point units;
a transmission line connecting the measurement point transmission connector and the reference measurement point transmission connector in series so as to be able to transmit a reference physical quantity;
An in-tunnel measurement system equipped with further comprising a measurement point processing unit that converts the analog signal of the physical quantity acquired by the physical quantity acquisition unit into a communicable digital signal;
The in-tunnel measurement system according to claim 8. The sensor unit is a pressure sensor that detects pressure.
The in-tunnel measurement system according to claim 8 or 9. The sensor section includes a sensor that detects static pressure.
The in-tunnel measurement system according to any one of claims 8 to 10. The sensor section includes a pitot tube.
The in-tunnel measurement system according to any one of claims 8 to 11. The physical quantity acquisition unit is a differential pressure gauge that acquires the differential pressure between the pressure and the reference pressure,
the transmission path is an air tube;
The in-tunnel measurement system according to any one of claims 8 to 12. The measurement point unit is
A portable stand and
the sensor section attached to the stand;
the physical quantity acquisition unit attached to the stand;
the measurement point transmission connector connected to the physical quantity acquisition unit so as to be able to transmit a reference physical quantity via a branch transmission line;
Consisting of
The in-tunnel measurement system according to any one of claims 8 to 13. A power supply cable for supplying power from the power source is arranged, and a branch power supply cable for branching from the power supply cable and supplying power to each of the plurality of measurement point units is arranged.
The in-tunnel measurement system according to any one of claims 8 to 14. The reference measurement point unit also serves as the measurement point unit,
Any one of the plurality of measurement point units is the reference measurement point unit,
The in-tunnel measurement system according to any one of claims 8 to 15. An in-tunnel measurement system that measures physical quantities at multiple measurement points in a tunnel,
A sensor unit arranged at each of the plurality of measurement points to detect a physical quantity, a physical quantity acquisition unit that acquires a physical quantity corresponding to the physical quantity detected by the sensor unit and a reference physical quantity, and a reference physical quantity is transmitted to the physical quantity acquisition unit. a measurement point transmission connector that is communicatively connected to the measurement point, a measurement point processing section that processes the physical quantity acquired by the physical quantity acquisition section into a communicable signal, and a measurement point communicatively connected to the measurement point processing section. a plurality of measurement point units provided with point communication connectors;
A reference measurement point unit disposed at a reference measurement point for acquiring a reference physical quantity, and provided with a reference sensor section for detecting the reference physical quantity, and a reference measurement point transmission connector connected to the reference physical quantity so as to be able to transmit the reference physical quantity from the reference sensor section. and,
an arithmetic processing unit that arithmetic processes the physical quantities acquired for each of the plurality of measurement point units;
a communication connector for an arithmetic processing unit communicatively connected to the arithmetic processing unit;
a transmission line connecting the measurement point transmission connector and the reference measurement point transmission connector in series so as to be able to transmit a reference physical quantity;
a communication cable that communicably connects the measurement point communication connector and the arithmetic processing unit communication connector in series;
An in-tunnel measurement system equipped with The measurement point processing unit includes a processing unit that converts the analog signal of the physical quantity acquired by the physical quantity acquisition unit into a communicable digital signal.
The in-tunnel measurement system according to claim 17. The sensor unit is a pressure sensor that detects pressure.
The in-tunnel measurement system according to claim 17 or 18. The sensor section includes a sensor that detects static pressure.
The in-tunnel measurement system according to any one of claims 17 to 19. The sensor section includes a pitot tube.
The in-tunnel measurement system according to any one of claims 17 to 20. The physical quantity acquisition unit is a differential pressure gauge that acquires the differential pressure between the pressure and the reference pressure,
the transmission path is an air tube;
The in-tunnel measurement system according to any one of claims 17 to 21. The measurement point unit is
A portable stand and
the sensor section attached to the stand;
the physical quantity acquisition unit attached to the stand;
the measurement point transmission connector connected to the physical quantity acquisition unit so as to be able to transmit a reference physical quantity via a branch transmission line;
the measurement point processing unit attached to the stand;
the measurement point communication connector communicably connected to the measurement point processing unit via a branch communication cable;
Consisting of
The in-tunnel measurement system according to any one of claims 17 to 22. A power supply cable for supplying power from the power source is arranged, and a branch power supply cable for branching from the power supply cable and supplying power to each of the plurality of measurement point units is arranged.
The in-tunnel measurement system according to any one of claims 17 to 23. The reference measurement point unit also serves as the measurement point unit,
Any one of the plurality of measurement point units is the reference measurement point unit,
The in-tunnel measurement system according to any one of claims 17 to 24. A measurement point unit used for an in-tunnel measurement system that measures physical quantities at multiple measurement points in a tunnel,
The measurement point unit is
A portable stand and
a sensor unit that is attached to the stand and detects a physical quantity;
a physical quantity acquisition unit that is attached to the stand and acquires a physical quantity according to the physical quantity detected by the sensor unit and a reference physical quantity;
a measurement point transmission connector connected to the physical quantity acquisition unit so as to be able to transmit a reference physical quantity via a branch transmission line;
a measurement point processing unit attached to the stand and processing the physical quantity acquired by the physical quantity acquisition unit into a communicable signal;
a measurement point communication connector communicably connected to the measurement point processing unit via a branch communication cable;
A measurement point unit consisting of. The measurement point processing unit includes a processing unit that converts the analog signal of the physical quantity acquired by the physical quantity acquisition unit into a communicable digital signal.
The measurement point unit according to claim 26. The sensor unit is a pressure sensor that detects pressure.
The measurement point unit according to claim 26 or 27. The sensor section includes a sensor that detects static pressure.
The in-tunnel measurement system according to any one of claims 26 to 28. The sensor section includes a pitot tube.
The in-tunnel measurement system according to any one of claims 26 to 29. The physical quantity acquisition unit is a differential pressure gauge that acquires the differential pressure between the pressure and the reference pressure,
the branch transmission line is an air tube;
The measurement point unit according to any one of claims 26 to 30. A branch power supply cable for supplying power from a power source is electrically connected to the measurement point unit.
Measurement point unit according to any one of claims 26 to 31. A measurement point unit used for an in-tunnel measurement system that measures physical quantities at multiple measurement points in a tunnel,
The measurement point unit is
A portable stand and
a sensor unit that is attached to the stand and detects a physical quantity;
a physical quantity acquisition unit that is attached to the stand and acquires a physical quantity according to the physical quantity detected by the sensor unit and a reference physical quantity;
a measurement point transmission connector connected to the physical quantity acquisition unit so as to be able to transmit a reference physical quantity via a branch transmission line;
a measurement point processing unit attached to the stand and processing the physical quantity acquired by the physical quantity acquisition unit into a communicable signal;
A measurement point unit consisting of. comprising a transmitter that wirelessly transmits the signal processed by the measurement point processor to an external device;
The measurement point unit according to claim 33. A measurement point unit control device that controls a plurality of measurement point units arranged at each of a plurality of measurement points in a tunnel,
a transmitter that intermittently transmits a measurement value acquisition instruction signal for instructing the measurement point unit to acquire the measurement value;
a receiving unit that receives an updated measurement value signal that is intermittently transmitted from the measurement point unit in response to the measurement value acquisition instruction signal and includes an updated measurement value and a specific code that identifies the measurement point unit;
a display unit that individually displays the transmission and reception status of each of the plurality of measurement point units;
Each time the measurement value acquisition instruction signal is intermittently transmitted, a first display indicating that measurement value acquisition has been instructed to the corresponding measurement point unit is individually displayed, and the updated measurement value signal is transmitted. The display of the display unit is controlled so that a second display indicating that the measured value has been updated in the corresponding measurement point unit is displayed separately from the first display each time the second display is received. a display control section;
A control device for a measurement point unit equipped with. The display of the display unit is controlled so that the first display and the second display are respectively different colors.
A control device for a measurement point unit according to claim 35. The display unit displays the measurement values acquired by the corresponding measurement point unit using the first display or the second display as a background color.
A control device for a measurement point unit according to claim 35 or 36. an operation button for transmitting the measurement value acquisition instruction signal is arranged on the display screen;
A control device for a measurement point unit according to any one of claims 35 to 37. A plurality of individual display sections respectively associated with the plurality of measurement point units are arranged on the display screen,
The display control unit is configured to display a first display indicating that measurement value acquisition has been instructed to a corresponding measurement point unit each time the measurement value acquisition instruction signal is intermittently transmitted to the measurement point unit. A second display is displayed on an individual display unit corresponding to the unit, and each time the updated measurement value signal is received, a second display indicating that the measurement value has been updated at the corresponding measurement point unit is distinguishable from the first display. , controlling the display of the display unit so as to be performed on the individual display unit corresponding to the measurement point unit;
A control device for a measurement point unit according to any one of claims 35 to 38. The plurality of measurement point units are connected in series to a communication cable through which the measurement value acquisition instruction signal and the updated measurement value signal are transmitted,
The updated measurement value signals are transmitted from a plurality of measurement point units at staggered transmission times to avoid crosstalk within the communication cable,
A control device for a measurement point unit according to any one of claims 35 to 39.