CN102901440A - Wireless sensory detection device and method for tunnel environment - Google Patents

Wireless sensory detection device and method for tunnel environment Download PDF

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Publication number
CN102901440A
CN102901440A CN2012103973545A CN201210397354A CN102901440A CN 102901440 A CN102901440 A CN 102901440A CN 2012103973545 A CN2012103973545 A CN 2012103973545A CN 201210397354 A CN201210397354 A CN 201210397354A CN 102901440 A CN102901440 A CN 102901440A
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wireless
chip microcomputer
unit
microcomputer processing
sensor
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CN102901440B (en
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刘盛春
丁树春
张金涛
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Heilongjiang University
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Heilongjiang University
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Abstract

The invention discloses a wireless sensory detection device and a wireless sensory detection method for a tunnel environment, relates to a detection device and a detection method for the tunnel environment, and aims at solving the problems that a conventional detection device and a conventional detection method have the disadvantages that an instrument is cumbersome, the mounting is complicated and the cost is high. The wireless sensory detection device for the tunnel environment consists of N wireless sensory transmission nodes and a wireless information collection node. The wireless sensory detection method for the tunnel environment comprises the following steps of: 1, giving a fixed-frequency pumping signal fL to a sensor to begin sweeping a frequency by using a first singlechip processing unit in the wireless sensory transmission nodes; 2, judging whether the sensor generates resonance vibration or not, and if yes, executing a step 4; 3, the sum of the fL and delta, judging that the sum of the fL and the delta is less than fm; 4, sending a detected signal to the wireless information collection node through an electromagnetic wave by using a detection circuit; and 5, receiving information for processing by using the wireless information collection node, and alarming if an environmental parameter is judged to be a dangerous value. The wireless sensory detection device and the wireless sensory detection method are applicable to the detection device and the detection method for the tunnel environment.

Description

Tunnel environment wireless sensing pick-up unit and method
Technical field
The present invention relates to tunnel environment pick-up unit and method.
Background technology
Road transport is the main artery of national economy, and transportation safety is the most important thing of road transport.Yet because China is with a varied topography, the tunnel is the important component part of road in the road section.The safety in tunnel has also just become one important in the transportation safety, that is to say that the security relationship of tunnel environment transportation safety, or even the large problem that life-and-death matter.
At present general wired foil gauge or the string pick-up unit that shakes that adopts of the detection of tunnel environment in the Tunnel Engineering is monitored tunnel environment.But there are the problem that instrument is heavy, installation is complicated, cost is high in this pick-up unit and method, and in work progress, wired monitoring equipment is easy to be constructed break especially, and survival rate is low after the construction, affects monitoring effect.
Summary of the invention
The objective of the invention is to have the problem that instrument is heavy, installation is complicated, cost is high in order to solve existing pick-up unit and method, a kind of tunnel environment wireless sensing pick-up unit and method are provided.
Tunnel environment wireless sensing pick-up unit, it is comprised of N wireless sensing transmitting node and wireless messages collector node, and N is the integer greater than 2, the exchange data using wireless mode communication of described N wireless sensing transmitting node and wireless messages collector node; The wireless sensing transmitting node is comprised of sensor, a single-chip microcomputer processing unit, a power supply unit and a wireless communication unit, the output terminal of sensor signal is communicated with the input end of the transducing signal of a single-chip microcomputer processing unit, the power output end of a power supply unit is communicated with the input end of the power supply of a single-chip microcomputer processing unit, a data exchange end of a wireless communication unit is communicated with the exchanges data end that another exchanges data end of a wireless communication unit is the wireless sensing transmitting node with the communication data exchange end of a single-chip microcomputer processing unit; The wireless messages collector node is by No. two single-chip microcomputer processing units, indicative control unit, alarm unit, No. two power supply units and No. two wireless communication units consist of, the exchanges data end that a data exchange end of No. two wireless communication units is the wireless messages collector node, another exchanges data end of No. two wireless communication units is communicated with the communication data exchange end of No. two single-chip microcomputer processing units, the power output end of No. two power supply units is communicated with the input end of the power supply of No. two single-chip microcomputer processing units, the exchanges data end of indicative control unit is communicated with the demonstration of No. two single-chip microcomputer processing units control exchanges data end, and the output terminal that the warning of No. two single-chip microcomputer processing units starts control is communicated with the startup control input end of alarm unit.
Tunnel environment wireless sensing detection method, it comprises that concrete steps are as follows:
N wireless sensing transmitting node is mounted in respectively in the N place cement layer of tunnel vault, and the wireless messages collector node exposes or is buried in tunnel ground;
A single-chip microcomputer processing unit in step 1, the wireless sensing transmitting node begins frequency sweep to sensor with a fixed frequency pumping signal fL;
Step 2, judge sensor whether occur resonance: be that then execution in step four; No, then execution in step three;
Step 3, f L+ Δ is judged f L+ Δ<f m, be that then execution in step two; No, then execution in step one; f mBe the highest frequency sweep frequency, Δ is the step-length of sweep frequency;
Step 4, testing circuit pass to the single-chip microcomputer processing unit No. one with the signal that detects, the sensing data handling procedure of a single-chip microcomputer processing unit is processed described signal, be transferred to wireless communication unit No. one by the wireless transmission programmed control, send to the wireless messages collector node by electromagnetic wave;
Step 5, wireless messages collector node receive information to two single-chip microcomputer processing unit and process, show and judge; It is dangerous values that No. two single-chip microcomputer processing units are judged the tunnel environment parameter, then starts alarm unit and reports to the police.
The present invention detects the tunnel environment parameter and comprises strain, multi-point displacement and soil pressure parameter by N wireless sensing transmitting node being arranged in the N place cement layer of tunnel one section; When resonance appearred in detecting sensor, the wireless sensing transmitting node sent to the wireless messages collector node by electromagnetic wave with described signal, and the docking of wireless sensing information node is collected mail and ceased the information of processing, show and judge the tunnel environment parameter.The characteristics of wireless sensing pick-up unit comprise that volume is little, be convenient to install lay, cost is low and low-power consumption; Comprise that also construction threatens minimum, easy to use and safe and reliable.
Description of drawings
Fig. 1 is the in running order structural arrangement schematic diagram of apparatus of the present invention, A sign tunnel concrete interior wall among the figure, B sign tunnel concrete exterior wall; Fig. 2 is the composition structural representation of the wireless sensing transmitting node of apparatus of the present invention, Fig. 3 is the composition structural representation of the wireless messages collector node of apparatus of the present invention, Fig. 4 is the singlechip data processing unit circuit diagram, Fig. 5 is that sensor drives and the testing circuit schematic diagram, Fig. 6 is the data display unit circuit diagram, Fig. 7 is warning partial circuit principle schematic, and Fig. 8 is the circuit diagram of embodiment one wireless communication unit, and Fig. 9 is sensor trace routine block diagram.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1 to Fig. 8, the described tunnel environment wireless sensing of present embodiment pick-up unit, it is comprised of N wireless sensing transmitting node 1 and wireless messages collector node 2, N is the integer greater than 2, the exchange data using wireless mode communication of described N wireless sensing transmitting node 1 and wireless messages collector node 2; Wireless sensing transmitting node 1 is by sensor 1-2, a single-chip microcomputer processing unit 1-1, a power supply unit 1-5 and a wireless communication unit 1-6 form, the output terminal of the signal of sensor 1-2 is communicated with the input end of the transducing signal of a single-chip microcomputer processing unit 1-1, the power output end of a power supply unit 1-5 is communicated with the input end of the power supply of a single-chip microcomputer processing unit 1-1, the data exchange end of a wireless communication unit 1-6 is communicated with the exchanges data end that another exchanges data end of a wireless communication unit 1-6 is wireless sensing transmitting node 1 with the communication data exchange end of a single-chip microcomputer processing unit 1-1; Wireless messages collector node 2 is by No. two single-chip microcomputer processing unit 2-1, indicative control unit 2-3, alarm unit 2-4, No. two power supply unit 2-5 and No. two wireless communication unit 2-6 consist of, the exchanges data end that the data exchange end of No. two wireless communication unit 2-6 is wireless messages collector node 2, another exchanges data end of No. two wireless communication unit 2-6 is communicated with the communication data exchange end of No. two single-chip microcomputer processing unit 2-1, the power output end of No. two power supply unit 2-5 is communicated with the input end of the power supply of No. two single-chip microcomputer processing unit 2-1, the exchanges data end of indicative control unit 2-3 is communicated with the demonstration control exchanges data end of No. two single-chip microcomputer processing unit 2-1, and the output terminal that the warning of No. two single-chip microcomputer processing unit 2-1 starts control is communicated with the startup control input end of alarm unit 2-4.
The schematic diagram of a single-chip microcomputer processing unit 1-1 as shown in Figure 4, the signal drive circuit of sensor 1-2 and testing circuit are as shown in Figure 5, the schematic diagram of a wireless communication unit 1-6 as shown in Figure 8, the power supply of a power supply unit 1-5 is provided by the 3.3V chargeable lithium cell;
The ultimate principle of No. two single-chip microcomputer processing unit 2-1 as shown in Figure 4, indicative control unit 2-3 principle as shown in Figure 6, alarm unit 2-4 principle as shown in Figure 7, the schematic diagram of No. two wireless communication unit 2-6 as shown in Figure 8, the power supply of No. two power supply unit 21-5 is provided by the 3.3V chargeable lithium cell.
The present invention detects the tunnel environment parameter by N wireless sensing transmitting node being arranged in the N place cement layer of tunnel vault; When monitoring physical quantity, the wireless sensing transmitting node sends to the wireless messages collector node by electromagnetic wave with described signal, the docking of wireless sensing information node is collected mail and is ceased the information of processing, show and judge the tunnel environment parameter, if surpass the tunnel safety value, namely send the early warning alarm.The characteristics of wireless sensing pick-up unit comprise that volume is little, be convenient to install lay, cost is low and low in energy consumption; Simultaneously work progress damage is little, easy to use and the sensor survival rate is high.
Embodiment two: present embodiment is the further restriction to embodiment one described tunnel environment wireless sensing pick-up unit, No. one single-chip microcomputer processing unit 1-1 comprises single-chip microcomputer, sensor driving and testing circuit and program software, sensor drives and the output terminal of testing circuit is communicated with the input end of sensor 1-2, sensor drives and the input end of testing circuit signal is communicated with the output terminal of the signal of sensor 1-2, sensor drives and the input end of testing circuit control signal is communicated with the sensing of single-chip microcomputer and the output terminal of detection control signal, described program software is by the frequency sweep program, the frequency measurement program, sensing data handling procedure and wireless transmission program form, and program software is solidificated in the storer of single-chip microcomputer.
Embodiment three: present embodiment is the further restriction to embodiment one described tunnel environment wireless sensing pick-up unit, No. two single-chip microcomputer processing unit 2-1 comprises single-chip microcomputer and program software, program software is solidificated in the storer of single-chip microcomputer, and described program software is comprised of sensing data handling procedure, wireless transmission program and display control program.
Embodiment four: present embodiment is described in conjunction with Fig. 2, present embodiment is the further restriction to embodiment one described tunnel environment wireless sensing pick-up unit, sensor 1-2 adopts the sensor of vibrating string joint meter, vibrating wire piezometer or type vibration wire soil pressure cell, finishes the monitoring of tunnel environment.
Vibrating string joint meter is comprised of the precision spring that vibrating string type sensor measuring unit and process heat treatment stress discharge, one end of spring is connected with the vibration string wire, and the other end is connected on the extension bar, when extension bar is subjected to displacement, changed the tension force of precision spring and string wire, correspondingly cause the change of the vibration frequency of string wire, this frequency signal arrives the single-chip microcomputer processing unit by cable transmission, the single-chip microcomputer processing unit can be processed out its frequency data, and frequency data are launched by wireless communication unit.
The vibration string wire of vibrating wire piezometer links to each other with a sensitive diaphragm, is located near the solenoid of string wire and can stirs string wire, the vibration string wire can be converted into electric weight again.The frequency of this electric weight can reflect its string wire natural reonant frequency.The variation of pressure causes the distortion of diaphragm, changes tension force and the resonant frequency thereof of string wire, and each pressure has a corresponding frequency output like this.
The type vibration wire soil pressure cell belongs to static, unidirectional, Boundary-Type power sensor.It adopts the thin board type structure, after the stressed deflection of its inner elastic sheet, by being mounted in two string wire posts on the thin plate, string wire stress is changed, and respective change also occurs the natural frequency of vibration of string.Utilize pulse excitation, make the string wire starting of oscillation, and receive its frequency.Can draw force value according to pressure-frequency relation curve.
The physical quantity of appealing three kinds of sensor impressions changes the resonant frequency that can change string wire, just can record tunnel environment information by the resonant frequency of measuring string wire.Its principle of work is as follows, the frequency sweep program of a single-chip microcomputer processing unit 1-1 curing drives with sensor by processor and is connected with the testing circuit input end, behind 2 triodes composition driving circuits, be connected to the driving input end of sensor 1-2, the frequency consistent with the string resonant frequency will produce larger vibration, then input detecting circuit, testing circuit is comprised of two-stage active filter and 1 amplifier.Its monitoring information is finished the string resonant frequency monitoring of shaking by being solidificated in sensor trace routine in the single-chip microcomputer in single-chip microcomputer processing unit 1-1 of input, sensor trace routine block diagram as shown in Figure 9.The resonance information of the vibration of string instrument that detects is launched by wireless communication unit 1-6 of wireless information machine transmitting node.
Embodiment five: present embodiment is described in conjunction with Fig. 3, present embodiment is the further restriction to embodiment one described tunnel environment wireless sensing pick-up unit, and the radio communication of wireless sensing transmitting node 1 and wireless messages collector node 2 adopts the frequency communication of 433MHz.
A wireless communication unit 1-6 and No. two wireless communication unit 2-6 are transmission and receptions of adopting radio frequency chip fulfillment information on the 433MHZ frequency.The information of a plurality of wireless sensing transmitting nodes is pooled on the wireless messages collector node, and described communication adopts wireless chip to communicate by letter at 433MHz, can see through 8 centimetres cement layer, realizes effective transmission of wireless sensing communication.But be not limited to the radio communication of 433MHz frequency, as long as can satisfy frequency that radio communication requires all at protection domain of the present invention.
Embodiment six: present embodiment is the further restriction to embodiment one described tunnel environment wireless sensing pick-up unit, and described alarm unit 2-4 adopts loudspeaker or hummer to realize.
Will be by loudspeaker or buzzer warning if the tunnel environment parameter is dangerous values.But alarm unit 2-4 is not limited to loudspeaker or hummer, as long as other devices that can satisfy alarm function are all at protection domain of the present invention.
Embodiment seven: present embodiment is the further restriction to embodiment one described tunnel environment wireless sensing pick-up unit, and a power supply unit 1-5 or No. two power supply unit 2-5 adopt battery to realize.
The staff can read the data of wireless messages collector node 2 at any time, and can allow wireless sensing transmitting node 1 and wireless messages collector node 2 be in the sleep electricity-saving state; When its work of needs, open again.A power supply unit 1-5 or No. two power supply unit 2-5 adopt the 3.3V chargeable lithium cell to provide.
Embodiment eight: the described tunnel environment wireless sensing of present embodiment detection method, it comprises that concrete steps are as follows:
N wireless sensing transmitting node 1 is mounted in respectively in the N place cement layer of tunnel vault, and wireless messages collector node 2 exposes or is buried in tunnel ground;
A single-chip microcomputer processing unit 1-1 in step 1, the wireless sensing transmitting node 1 begins frequency sweep to sensor 1-2 with a fixed frequency pumping signal fL;
Step 2, judge sensor 1-2 whether occur resonance: be that then execution in step four; No, then execution in step three;
Step 3, f L+ Δ is judged f L+ Δ<f m, be that then execution in step two; No, then execution in step one; f mBe the highest frequency sweep frequency, Δ is the step-length of sweep frequency;
Step 4, testing circuit pass to single-chip microcomputer processing unit 1-1 No. one with the signal that detects, the sensing data handling procedure of a single-chip microcomputer processing unit 1-1 is processed described signal, be transferred to wireless communication unit 1-6 No. one by the wireless transmission programmed control, send to wireless messages collector node 2 by electromagnetic wave;
Step 5, wireless messages collector node 2 reception information to two single-chip microcomputer processing unit 2-1 process, show and judge; It is dangerous values that No. two single-chip microcomputer processing unit 2-1 judge the tunnel environment parameter, then starts alarm unit 2-4 and reports to the police.
Embodiment nine: present embodiment is the further restriction to embodiment eight described tunnel environment wireless sensing detection methods, and wireless sensing transmitting node 1 is mounted in and is no more than in 8 centimetres of dark cement layers.
N wireless sensing transmitting node 1 is mounted in the cement layer on the top, tunnel as required, wireless sensing transmitting node 1 can dried up mud outer 8 centimetres dark; Wireless messages collector node 2 can expose or be buried in tunnel ground.A single-chip microcomputer processing unit 1-1 in the wireless sensing transmitting node 1 begins frequency sweep to sensor 1-2 with a fixed frequency pumping signal fL, when appearring in sensor 1-2, resonance effect then stops frequency sweep, by testing circuit the information that perceives is passed to single-chip microcomputer processing unit 1-1 core No. one, single-chip microcomputer processing unit 1-1 processes and transmits in the program of finishing according to internal system; Be transferred to a wireless communication unit 1-6 and send to wireless sensing information node 2 by electromagnetic wave.Wireless sensing information node 2 reception information to two single-chip microcomputer processing unit 2-1 process, show and judge.The information that any place, tunnel, which kind of tunnel environment parameter on the liquid crystal display of indicative control unit 2-3, will occur.Will be by loudspeaker or buzzer warning if the tunnel environment parameter is dangerous values.

Claims (8)

1. tunnel environment wireless sensing pick-up unit, it is characterized in that, it is comprised of N wireless sensing transmitting node (1) and wireless messages collector node (2), N is the integer greater than 2, the exchange data using wireless mode communication of described N wireless sensing transmitting node (1) and wireless messages collector node (2); Wireless sensing transmitting node (1) is by sensor (1-2), a single-chip microcomputer processing unit (1-1), a power supply unit (1-5) and a wireless communication unit (1-6) form, the output terminal of the signal of sensor (1-2) is communicated with the input end of the transducing signal of a single-chip microcomputer processing unit (1-1), the power output end of a power supply unit (1-5) is communicated with the input end of the power supply of a single-chip microcomputer processing unit (1-1), a data exchange end of a wireless communication unit (1-6) is communicated with the communication data exchange end of a single-chip microcomputer processing unit (1-1), and another exchanges data end of a wireless communication unit (1-6) is the exchanges data end of wireless sensing transmitting node (1); Wireless messages collector node (2) is by No. two single-chip microcomputer processing units (2-1), indicative control unit (2-3), alarm unit (2-4), No. two power supply units (2-5) and No. two wireless communication units (2-6) consist of, a data exchange end of No. two wireless communication units (2-6) is the exchanges data end of wireless messages collector node (2), another exchanges data end of No. two wireless communication units (2-6) is communicated with the communication data exchange end of No. two single-chip microcomputer processing units (2-1), the power output end of No. two power supply units (2-5) is communicated with the input end of the power supply of No. two single-chip microcomputer processing units (2-1), the exchanges data end of indicative control unit (2-3) is communicated with the demonstration control exchanges data end of No. two single-chip microcomputer processing units (2-1), and the output terminal that the warning of No. two single-chip microcomputer processing units (2-1) starts control is communicated with the startup control input end of alarm unit (2-4).
2. described tunnel environment wireless sensing pick-up unit according to claim 1, it is characterized in that, a single-chip microcomputer processing unit (1-1) comprises single-chip microcomputer, sensor driving and testing circuit and program software, sensor drives and the output terminal of testing circuit is communicated with the input end of sensor (1-2), sensor drives and the input end of testing circuit signal is communicated with the output terminal of the signal of sensor (1-2), sensor drives and the input end of testing circuit control signal is communicated with the sensing of single-chip microcomputer and the output terminal of detection control signal, described program software is by the frequency sweep program, the frequency measurement program, sensing data handling procedure and wireless transmission program form, and program software is solidificated in the storer of single-chip microcomputer.
3. described tunnel environment wireless sensing pick-up unit according to claim 1, it is characterized in that, No. two single-chip microcomputer processing units (2-1) comprise single-chip microcomputer and program software, program software is solidificated in the storer of single-chip microcomputer, and described program software is comprised of sensing data handling procedure, wireless transmission program and display control program.
4. described tunnel environment wireless sensing pick-up unit according to claim 1 is characterized in that, sensor (1-2) adopts the sensor of vibrating string joint meter, vibrating wire piezometer or type vibration wire soil pressure cell.
5. described tunnel environment wireless sensing pick-up unit according to claim 1 is characterized in that, wireless sensing transmitting node (1) and the radio communication of wireless messages collector node (2) adopt the frequency communication of 433MHz.
6. described tunnel environment wireless sensing pick-up unit according to claim 1 is characterized in that, described alarm unit (2-4) adopts loudspeaker or hummer to realize.
7. described tunnel environment wireless sensing pick-up unit according to claim 1 is characterized in that, a power supply unit (1-5) or No. two power supply units (2-5) adopt battery to realize.
8. tunnel environment wireless sensing detection method is characterized in that, it comprises that concrete steps are as follows:
N wireless sensing transmitting node (1) is mounted in respectively in the N place cement layer of tunnel vault, and wireless messages collector node (2) exposes or is buried in tunnel ground;
Single-chip microcomputer processing unit (1-1) in step 1, the wireless sensing transmitting node (1) gives sensor (1-2) with a fixed frequency pumping signal f LThe beginning frequency sweep;
Step 2, judge sensor (1-2) whether occur resonance: be that then execution in step four; No, then execution in step three;
Step 3, f L+ Δ is judged f L+ Δ<f m, be that then execution in step two; No, then execution in step one; f mBe the highest frequency sweep frequency, Δ is the step-length of sweep frequency;
Step 4, testing circuit pass to a single-chip microcomputer processing unit (1-1) with the signal that detects, the sensing data handling procedure of a single-chip microcomputer processing unit (1-1) is processed described signal, be transferred to a wireless communication unit (1-6) by the wireless transmission programmed control, send to wireless messages collector node (2) by electromagnetic wave;
Step 5, wireless messages collector node (2) reception information to two single-chip microcomputer processing unit (2-1) are processed, are shown and judge; It is dangerous values that No. two single-chip microcomputer processing units (2-1) are judged the tunnel environment parameter, then starts alarm unit (2-4) and reports to the police.
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CN104900028A (en) * 2015-04-29 2015-09-09 无锡悟莘科技有限公司 Vibratory string type wireless acquisition fulcrum and control method thereof
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CN110952484A (en) * 2019-12-20 2020-04-03 中铁五局集团第一工程有限责任公司 Tunnel lining detects cleaning device
CN111207876A (en) * 2020-01-13 2020-05-29 江苏南水科技有限公司 Intelligent excitation and vibration pickup method for embedded vibrating wire type osmometer
CN111322940A (en) * 2020-04-08 2020-06-23 北京交通大学 Tunnel face deep soil horizontal displacement monitoring device and method

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Publication number Priority date Publication date Assignee Title
CN104483061A (en) * 2014-12-29 2015-04-01 中国铁道科学研究院铁道建筑研究所 Pressure monitoring device and method for monitoring pressure of tunnel lining concrete
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CN104900028A (en) * 2015-04-29 2015-09-09 无锡悟莘科技有限公司 Vibratory string type wireless acquisition fulcrum and control method thereof
CN110952484A (en) * 2019-12-20 2020-04-03 中铁五局集团第一工程有限责任公司 Tunnel lining detects cleaning device
CN110952484B (en) * 2019-12-20 2021-03-02 中铁五局集团第一工程有限责任公司 Tunnel lining detects cleaning device
CN111207876A (en) * 2020-01-13 2020-05-29 江苏南水科技有限公司 Intelligent excitation and vibration pickup method for embedded vibrating wire type osmometer
CN111322940A (en) * 2020-04-08 2020-06-23 北京交通大学 Tunnel face deep soil horizontal displacement monitoring device and method

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