Pneumatic pressure monitoring device based on real-time correction of environment pressure

Abstract

The utility model relates to the technical field of tunnel pressure monitoring, in particular to a pneumatic pressure monitoring device based on real-time correction of environment pressure, which comprises a pneumatic pressure monitoring unit, a reference pressure monitoring unit and an upper computer, the pneumatic pressure monitoring unit is arranged in the tunnel, the pneumatic pressure monitoring unit comprises a first pressure sensor and a first temperature sensor, and the first pressure sensor and the first temperature sensor are both connected to the first main control circuit board; the reference pressure monitoring unit is arranged outside the tunnel and comprises a second pressure sensor and a second temperature sensor, and the second pressure sensor and the second temperature sensor are both connected to the second main control circuit board; the first master control circuit board and the second master control circuit board are connected to an upper computer in a wireless transmission mode. According to the utility model, the real pneumatic pressure value is monitored by monitoring and correcting the air pressure signal and the temperature signal inside and outside the tunnel in real time, the installation is simple, and the transmission is fast.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel pressure monitoring, in particular to a pneumatic pressure monitoring device based on real-time correction of environmental pressure. Background Art

[0002] As the pressure waves caused by high-speed trains propagate in the tunnel, passengers on the train and people in the tunnel will feel a series of pressure pulses. Slight pressure waves will make passengers feel uncomfortable and cause pain in the inner ear, and in severe cases will cause permanent damage to the eardrum. For safety reasons, it is necessary to conduct on-site tests on the pneumatic pressure caused by trains passing through tunnels to study the impact of train operation on pressure changes in the tunnel and provide experimental references for the safe design of subway tunnel structures.

[0003] During the field test, due to the particularity of the tunnel structure and the influence of the train running in the tunnel, the ambient temperature and ambient pressure in the tunnel will change, resulting in a deviation between the pneumatic pressure value measured by the pressure sensor and the actual pneumatic pressure value. The reference pressure used by the differential pressure sensor used in the past is a constant value, which is different from the changing ambient pressure in the tunnel, resulting in measurement errors. Therefore, in order to ensure that the pneumatic pressure value measured by the pressure sensor is closer to the actual value, it is necessary to correct the ambient pressure in the tunnel, and then correct the measured pneumatic pressure value.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The utility model aims to provide a pneumatic pressure monitoring device based on real-time correction of ambient pressure, which can monitor and correct air pressure signals and temperature signals inside and outside the tunnel in real time, and then monitor the real pneumatic pressure value.

[0006] The utility model provides a pneumatic pressure monitoring device based on real-time correction of environmental pressure, comprising: a pneumatic pressure monitoring unit, a reference pressure monitoring unit and a host computer; the pneumatic pressure monitoring unit is arranged in a tunnel, and the pneumatic pressure monitoring unit comprises: a first pressure sensor and a first temperature sensor, and the first pressure sensor and the first temperature sensor are both connected to a first main control circuit board; the reference pressure monitoring unit is arranged outside the tunnel, and the reference pressure monitoring unit comprises: a second pressure sensor and a second temperature sensor, and the second pressure sensor and the second temperature sensor are both connected to a second main control circuit board; the first main control circuit board and the second main control circuit board are connected to the host computer by wireless transmission.

[0007] Preferably, the first main control circuit board includes: a first control module and a first wireless transmission module; the first pressure sensor and the first temperature sensor are respectively connected to the first control module; and the first control module is connected to a host computer via the first wireless transmission module.

[0008] Preferably, the first pressure sensor, the first temperature sensor, the first control module and the first wireless transmission module are all connected to a first power supply.

[0009] Preferably, the pneumatic pressure monitoring unit further includes: a first protective cover; the first pressure sensor, the first temperature sensor, the first control module, the first wireless transmission module and the first power supply are all arranged in the first protective cover.

[0010] Preferably, the first pressure sensor and the first temperature sensor are located at two ends of an upper portion of the first protective cover, the first control module and the first wireless transmission module are located at two ends of a middle portion of the first protective cover, and the first power supply is located at a lower portion of the first protective cover.

[0011] Preferably, the second main control circuit board includes: a second control module and a second wireless transmission module; the second pressure sensor and the second temperature sensor are respectively connected to the second control module; and the second control module is connected to the host computer via the second wireless transmission module.

[0012] Preferably, the second pressure sensor, the second temperature sensor, the second control module and the second wireless transmission module are all connected to a second power supply.

[0013] Preferably, the reference pressure monitoring unit further includes: a second protective cover; the second pressure sensor, the second temperature sensor, the second control module, the second wireless transmission module and the second power supply are all arranged in the second protective cover.

[0014] Preferably, the second pressure sensor and the second temperature sensor are located at two ends of the upper portion of the second protective cover, the second control module and the second wireless transmission module are located at two ends of the middle portion of the second protective cover, and the second power supply is located at the lower portion of the second protective cover.

[0015] Preferably, the host computer is provided with a wireless receiving module, and the host computer is connected to a third power supply.

[0016] Beneficial effects:

[0017] The device of the utility model obtains air pressure signals and temperature signals inside and outside the tunnel through a pneumatic pressure monitoring unit and a reference pressure monitoring unit, and then corrects the environmental pressure in the tunnel through a host computer, thereby monitoring the actual pneumatic pressure value; in addition, the pneumatic pressure monitoring unit and the reference pressure monitoring unit both transmit data wirelessly, and do not need to be connected to the host computer through power lines and transmission cables, so the installation is simple and the transmission is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the working process of the pneumatic pressure monitoring device based on real-time correction of ambient pressure provided by the utility model;

[0020] Figure 2 A structural layout diagram of a pneumatic pressure monitoring device based on real-time correction of ambient pressure provided by the utility model;

[0021] Figure 3 A schematic diagram of the structure of the pneumatic pressure monitoring unit provided by the utility model;

[0022] Figure 4 A front view of the pneumatic pressure monitoring unit provided by the utility model;

[0023] Figure 5 A schematic diagram of the structure of a reference pressure monitoring unit provided by the utility model;

[0024] Figure 6 A front view of a reference pressure monitoring unit provided by the utility model;

[0025] Figure 7 This is a structural schematic diagram of the host computer provided by the utility model.

[0026] Explanation of the accompanying drawings: 1. Pneumatic pressure monitoring unit; 101. First protective cover; 141. First pressure sensor; 151. First temperature sensor; 2. Reference pressure monitoring unit; 201. Second protective cover; 241. Second pressure sensor; 251. Second temperature sensor; 3. Host computer; 301. Wireless receiving module; 601. First control module; 602. First wireless transmission module; 603. Second control module; 604. Second wireless transmission module; 701. First power supply; 702. Second power supply; 703. Third power supply. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The methods, formulas or algorithm steps described in the present invention can be implemented directly by hardware, software modules executed by a processor, or a combination of the two. The software modules can be placed in random access memory (RAM), internal memory, read-only memory ROM, erasable programmable read-only memory EPROM, registers, portable compact disk read-only CD-ROM, or other forms of storage media.

[0031] Example

[0032] like Figures 1 to 7As shown, this embodiment provides a pneumatic pressure monitoring device based on real-time correction of ambient pressure, including: a pneumatic pressure monitoring unit 1, a reference pressure monitoring unit 2 and a host computer 3; the pneumatic pressure monitoring unit 1 is arranged in the tunnel, for monitoring the air pressure value and the temperature value in the tunnel, the pneumatic pressure monitoring unit 1 includes: a first pressure sensor 141 and a first temperature sensor 151, the first pressure sensor 141 and the first temperature sensor 151 are both connected to the first main control circuit board; the reference pressure monitoring unit 2 is arranged outside the tunnel, for monitoring the ambient air pressure value and the ambient temperature value outside the tunnel as a reference value, the reference pressure monitoring unit 2 includes: a second pressure sensor 241 and a second temperature sensor 251, the second pressure sensor 241 and the second temperature sensor 251 are both connected to the second main control circuit board; the first main control circuit board and the second main control circuit board are connected to the host computer 3 by wireless transmission.

[0033] In this embodiment, the first main control circuit board includes: a first control module 601 and a first wireless transmission module 602; the first pressure sensor 141 and the first temperature sensor 151 are respectively connected to the first control module 601, and the first pressure sensor 141 and the first temperature sensor 151 respectively send the pressure value and the temperature value to the first control module 601; the first control module 601 is connected to the host computer 3 through the first wireless transmission module 602, and the first control module 601 sends the air pressure value and the temperature value to the host computer 3 through the first wireless transmission module 602.

[0034] In this embodiment, the first main control circuit board also includes a receiving circuit for receiving monitoring data of the first pressure sensor 141 and the first temperature sensor 151. The receiving circuit can use existing chips and existing circuits such as single-chip microcomputers.

[0035] In this embodiment, the first pressure sensor 141 , the first temperature sensor 151 , the first control module 601 , and the first wireless transmission module 602 are all connected to the first power supply 701 .

[0036] In this embodiment, the pneumatic pressure monitoring unit 1 also includes: a first protective cover 101; a first pressure sensor 141, a first temperature sensor 151, a first control module 601, a first wireless transmission module 602 and a first power supply 701 are all arranged in the first protective cover 101. When the pneumatic pressure monitoring unit 1 is in working state, the first protective cover 101 needs to be opened.

[0037] In this embodiment, the first pressure sensor 141 and the first temperature sensor 151 are located at the two ends of the upper part of the first protective cover 101, the first control module 601 and the first wireless transmission module 602 are located at the two ends of the middle part of the first protective cover 101, and the first power supply 701 is located at the lower part of the first protective cover 101.

[0038] In this embodiment, the second main control circuit board includes: a second control module 603 and a second wireless transmission module 604; the second pressure sensor 241 and the second temperature sensor 251 are respectively connected to the second control module 603; the second control module 603 is connected to the host computer 3 through the second wireless transmission module 604.

[0039] In this embodiment, the second main control circuit board also includes a receiving circuit for receiving monitoring data of the second pressure sensor 241 and the second temperature sensor 251. The receiving circuit can use existing chips and existing circuits such as single-chip microcomputers.

[0040] In this embodiment, the second pressure sensor 241 , the second temperature sensor 251 , the second control module 603 , and the second wireless transmission module 604 are all connected to the second power supply 702 .

[0041] In this embodiment, the reference pressure monitoring unit 2 also includes: a second protective cover 201; a second pressure sensor 241, a second temperature sensor 251, a second control module 603, a second wireless transmission module 604 and a second power supply 702 are all arranged in the second protective cover 201. When the reference pressure monitoring unit 2 is in working state, the second protective cover 201 needs to be opened.

[0042] In this embodiment, the second pressure sensor 241 and the second temperature sensor 251 are located at the two ends of the upper part of the second protective cover 201, the second control module 603 and the second wireless transmission module 604 are located at the two ends of the middle part of the second protective cover 201, and the second power supply 702 is located at the lower part of the second protective cover 201.

[0043] In this embodiment, the first wireless transmission module 602 and the second wireless transmission module 604 may be a Bluetooth module, a ZigBee module or any other module capable of performing data transmission.

[0044] In this embodiment, the host computer 3 is connected to the third power supply 703 .

[0045] In this embodiment, the host computer 3 may be a computer or a single-chip microcomputer that can send operation instructions and perform data processing, including but not limited to computers, tablets and other devices.

[0046] In this embodiment, the host computer 3 is provided with a wireless receiving module 301. After receiving the pressure values ​​of the first pressure sensor 141 and the second pressure sensor 241, and the temperature values ​​of the first temperature sensor 151 and the second temperature sensor 251, the host computer 3 performs temperature correction on the air pressure value in the tunnel based on the reference pressure to obtain the corrected ambient pressure in the tunnel. The host computer 3 subtracts the pressure value measured by the first pressure sensor 141 from the actual ambient pressure in the tunnel obtained after correction to obtain the pneumatic pressure at the installation position of the pneumatic pressure monitoring unit 1 in the tunnel, and outputs the result.

[0047] In this embodiment, when the host computer 3 corrects the ambient pressure in the tunnel, the pressure correction can be performed according to the following formula:

[0048] P′2=f(P1,T1,T2) (Formula 1)

[0049] Among them, P′2 is the corrected ambient pressure in the tunnel, P1 is the reference pressure value obtained by the reference pressure monitoring unit 2, T1 is the reference temperature value obtained by the reference pressure monitoring unit 2, and T2 is the reference temperature value obtained by the pneumatic pressure monitoring unit 1.

[0050] The host computer 3 subtracts the pressure value P2 obtained by the pneumatic pressure monitoring unit 1 from the corrected ambient pressure P′2 in the tunnel to obtain the pneumatic pressure at the installation position of the pneumatic pressure monitoring unit 1 in the tunnel, and outputs the result. The specific formula is:

[0051] ΔP=P2-P′2 (Formula 2)

[0052] Wherein, ΔP is the pneumatic pressure value at the installation position of the pneumatic pressure monitoring unit 1 , and P2 is the pressure value measured by the pneumatic pressure monitoring unit 1 .

[0053] In this embodiment, the correction formula for the ambient pressure in the tunnel only provides a correction idea, and the specific correction formula for the ambient pressure in the tunnel can be set according to specific circumstances.

[0054] In summary, the utility model obtains the air pressure signals and temperature signals inside and outside the tunnel through the pneumatic pressure monitoring unit and the reference pressure monitoring unit, and then corrects the environmental pressure in the tunnel through the host computer to obtain the real pneumatic pressure value; in addition, the pneumatic pressure monitoring unit and the reference pressure monitoring unit both transmit data by wireless transmission, and do not need to be connected to the host computer through power lines and transmission cables, so the installation is simple and the transmission is fast.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pneumatic pressure monitoring device based on real-time correction of ambient pressure, characterized in that: include: A pneumatic pressure monitoring unit (1), a reference pressure monitoring unit (2) and a host computer (3); The pneumatic pressure monitoring unit (1) is arranged in a tunnel, and comprises: a first pressure sensor (141) and a first temperature sensor (151), wherein the first pressure sensor (141) and the first temperature sensor (151) are both connected to a first main control circuit board; The reference pressure monitoring unit (2) is arranged outside the tunnel, and comprises: a second pressure sensor (241) and a second temperature sensor (251), wherein the second pressure sensor (241) and the second temperature sensor (251) are both connected to a second main control circuit board; The first main control circuit board and the second main control circuit board are connected to the host computer (3) by wireless transmission.

2. The device according to claim 1, characterized in that The first main control circuit board comprises: a first control module (601) and a first wireless transmission module (602); The first pressure sensor (141) and the first temperature sensor (151) are respectively connected to the first control module (601); The first control module (601) is connected to the host computer (3) via the first wireless transmission module (602).

3. The device according to claim 2, characterized in that The first pressure sensor (141), the first temperature sensor (151), the first control module (601) and the first wireless transmission module (602) are all connected to a first power supply (701).

4. The device according to claim 3, characterized in that The pneumatic pressure monitoring unit (1) further comprises: a first protective cover (101); The first pressure sensor (141), the first temperature sensor (151), the first control module (601), the first wireless transmission module (602) and the first power supply (701) are all arranged in the first protective cover (101).

5. The device according to claim 4, characterized in that The first pressure sensor (141) and the first temperature sensor (151) are located at two ends of an upper portion of the first protective cover (101), the first control module (601) and the first wireless transmission module (602) are located at two ends of a middle portion of the first protective cover (101), and the first power supply (701) is located at a lower portion of the first protective cover (101).

6. The device according to claim 1, characterized in that The second main control circuit board comprises: a second control module (603) and a second wireless transmission module (604); The second pressure sensor (241) and the second temperature sensor (251) are respectively connected to the second control module (603); The second control module (603) is connected to the host computer (3) via the second wireless transmission module (604).

7. The device according to claim 6, characterized in that The second pressure sensor (241), the second temperature sensor (251), the second control module (603) and the second wireless transmission module (604) are all connected to a second power supply (702).

8. The device according to claim 7, characterized in that The reference pressure monitoring unit (2) further comprises: a second protective cover (201); The second pressure sensor (241), the second temperature sensor (251), the second control module (603), the second wireless transmission module (604) and the second power supply (702) are all arranged in the second protective cover (201).

9. The device according to claim 8, characterized in that The second pressure sensor (241) and the second temperature sensor (251) are located at two ends of the upper part of the second protective cover (201), the second control module (603) and the second wireless transmission module (604) are located at two ends of the middle part of the second protective cover (201), and the second power supply (702) is located at the lower part of the second protective cover (201).

10. The device according to claim 1, characterized in that The host computer (3) is provided with a wireless receiving module (301), and the host computer (3) is connected to a third power supply (703).

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