CN212724312U

CN212724312U - Wireless collection system of inclination laser

Info

Publication number: CN212724312U
Application number: CN202021730342.6U
Authority: CN
Inventors: 毕晓猛; 雷彬; 郭棋武
Original assignee: Hunan Zhongda Testing Co ltd
Current assignee: Zhongda Intelligent Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-03-16
Anticipated expiration: 2030-08-18

Abstract

The utility model relates to a wireless collection system of inclination laser, including microcontroller, the inclination sensor who is used for measuring inclination who links to each other respectively with microcontroller, be used for measuring collection system's terrain clearance laser range sensor, be used for the LORA communication module of inclination sensor and laser range sensor network deployment with be used for uploading inclination and terrain clearance information's that microcontroller sent NB-IOT communication module, NB-IOT communication module passes through antenna module and links to each other with cloud ware. Collection system possesses monitoring inclination and terrain clearance and through NB-IOT teletransmission, is favorable to the slope situation and the terrain clearance of comprehensive consideration deep basal pit fender pile, high big template, high side slope to carry out safety monitoring and early warning.

Description

Wireless collection system of inclination laser

Technical Field

The utility model relates to a geological disasters monitoring technology field especially relates to a wireless collection system of inclination laser.

Background

Deep foundation pit engineering construction is available in high-rise building projects, roads, bridges and subway construction. The foundation pit needs to be enclosed before excavation, and an enclosing pile is used for enclosing the foundation pit to form a supporting structure. However, in the excavation process or after the foundation pit is finished, due to the influence of factors such as the unloading effect of soil around the foundation pit, the infiltration of geological water, weather disasters and the like, the support piles are often extruded to incline, and even collapse occurs to cause safety accidents. At present, in the field of construction engineering, a measure commonly adopted for safety monitoring and early warning of deep foundation pit support piles, high and large templates and high slopes is to monitor the inclination condition of the deep foundation pit support piles, the high and large templates and the high slopes by measuring the inclination angle of the deep foundation pit support piles. The mode has defects in monitoring and safety early warning in a single-side inclination angle mode in practical engineering application. If to deep basal pit fender pile, ancient building or high slope of co-altitude, when appearing the same inclination, the accident that highly higher deep basal pit fender pile, ancient building or high slope appear collapsing, collapsing more easily lacks the device of monitoring inclination and height simultaneously.

In addition, in several commonly applied transmission modes of the prior inclination angle acquisition device for acquiring information, wired transmission needs wiring, the application environment is severe, and the wiring is quite difficult; the GPRS communication circuit has low speed, serious time delay, low bandwidth utilization rate, high cost and high power consumption, and can ensure normal communication only by a high-power supply circuit; the 4G communication speed is high, but the 4G Internet of things chip is high in cost and large in power consumption; the LORA can realize networking, but long-distance transmission can be completed only by using the LORA gateway as a bridge, and the power consumption is relatively large; all the transmission modes can not meet the requirements of wide area internet with low power consumption, low cost, low maintenance and wide distribution, and the use scene of the tilt sensor in the internet of things is greatly limited. Therefore, a sensor which can collect inclination angle data and remotely transmit the data and has the characteristics of low cost and extremely low energy consumption has very high application value and is necessary to become an indispensable part in the engineering field.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Based on the problem, the utility model provides a wireless collection system of inclination laser based on NB-IOT communication module or LORA communication module monitoring inclination and terrain clearance and teletransmission to be used for the slope situation and the terrain clearance of comprehensive consideration deep basal pit fender pile, high big template, high side slope to carry out safety monitoring and early warning.

(II) technical scheme

Based on foretell technical problem, the utility model provides a wireless collection system of inclination laser, including microcontroller, the inclination sensor who is used for measuring inclination who links to each other respectively with microcontroller, be used for measuring collection system's terrain clearance laser ranging sensor and be used for with the wireless communication module who reaches the cloud ware is uploaded to inclination sensor and laser ranging sensor's data collection.

Further, the wireless communication module comprises an LORA communication module and an NB-IOT communication module, the LORA communication module is used for networking communication of the inclination angle sensors and the laser ranging sensors of the plurality of nodes and uploading collected data to the cloud server through an LORA gateway, the NB-IOT communication module is used for directly uploading the collected data of the inclination angle sensors and the laser ranging sensors of a single node to the cloud server, the NB-IOT communication module is connected with the cloud server through an antenna module, and the LORA communication module is connected with the cloud server through the LORA gateway.

Furthermore, the acquisition device also comprises a temperature sensor connected with the microcontroller and used for monitoring the temperature so as to perform temperature compensation on the inclination angle sensor.

Furthermore, the acquisition device further comprises an ADC module connected between the tilt sensor and the microcontroller, and a reference voltage module connected between the tilt sensor and the power module, wherein the ADC module is used for converting an analog signal into a digital signal, and the reference voltage module is used for providing reference voltage for the tilt sensor.

Furthermore, the acquisition device further comprises a storage module connected with the microcontroller and used for storing the information uploaded to the cloud server locally, and a timing awakening module and an alarm module are arranged in the microcontroller.

Furthermore, the sensing element of the tilt sensor needs to be parallel to the measuring platform during measurement, and the two axes of the tilt sensor need to be perpendicular to each other.

Further, the microcontroller is an STM32L151C8 chip or an MSP430 chip, the laser ranging sensor is a Ferris L series ranging module, and the tilt sensor is an SCA100T-D01 chip or an SCA103T-D04 chip.

Further, the LORA communication module is an sx1276 or sx1278 chip, and the NB-IOT communication module is a BC26 chip.

Further, the temperature sensor is a DS18B20 chip.

Further, the reference voltage module is an ADR4533 chip, and the ADC module is an AD7793 chip.

(III) advantageous effects

The above technical scheme of the utility model has following advantage:

(1) the utility model has the advantages that the inclination angle sensor and the laser distance measuring sensor are respectively used for accurately measuring the inclination angle and the ground clearance, the measurement precision is high, a plurality of factors of the inclination angle and the ground clearance are favorably integrated, and the safety monitoring and early warning are carried out on the deep foundation pit supporting pile, the high and large template, the high side slope and the like;

(2) the utility model also has the temperature sensor to compensate the temperature of the tilt sensor, keeps stable, and has the reference voltage module to provide accurate and stable reference voltage for the tilt sensor, so that the tilt sensor works in a rated value, the error is reduced, and the accuracy is improved;

(3) the utility model discloses a sensor monitoring, according to actual monitoring point number select LORA communication module networking or NB-IOT's wireless communication technique, both realize data acquisition, when realizing data remote transmission again, also possess low-power consumption, low-cost advantage, more can satisfy wide area internet's demand, and for manual measurement, it is higher to reduce manpower and accuracy, reduces the human error.

Drawings

The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:

fig. 1 is the utility model discloses inclination laser wireless acquisition device's schematic structure diagram.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The utility model provides a wireless collection system of inclination laser, as shown in figure 1, including microcontroller, the inclination sensor who links to each other respectively with microcontroller, laser range finding sensor, temperature sensor, wireless communication module and storage module to and reference voltage module, power module (not marked), ADC module, connect the ADC module between inclination sensor and the microcontroller, power module connects respectively microcontroller, inclination sensor, laser range finding sensor, temperature sensor, wireless communication module give whole device power supply, link to each other through the reference voltage module between inclination sensor and the power module.

The wireless communication module comprises an LORA communication module and an NB-IOT communication module, the LORA communication module is used for networking communication of the inclination angle sensors and the laser ranging sensors of the nodes and uploading collected data to a cloud server through an LORA gateway, and the LORA communication module is connected with the cloud server through the LORA gateway; the NB-IOT communication module is used for directly uploading the acquired data of the tilt angle sensor and the laser ranging sensor of a single node to the cloud server, the NB-IOT communication module is connected with the cloud server through the antenna module, and one of the two communication modes is selected according to the number of the actual monitoring nodes.

The microcontroller is STM32L151C8 chip, and it possesses the low power dissipation as embedded microcontroller, small advantage, and can directly link to each other with ADC module, temperature sensor, laser ranging sensor, LORA communication module communication, NB-IOT communication module, does not need extra intermediate device can satisfy the communication of many interfaces. Of course, the MSP430 can also be used as a microcontroller chip, thereby taking advantage of its sleep and wake-up, low power consumption. The intelligent laser distance measuring system comprises a microcontroller, a wireless communication module, a timing awakening module and an alarm module, wherein the microcontroller is used for acquiring the ground clearance information of the laser distance measuring sensor, the inclination angle information of the inclination angle sensor and the temperature information of the temperature sensor, compensating the inclination angle of the inclination angle sensor and sending the acquired information to the cloud server through the wireless communication module, the timing awakening module and the alarm module are arranged inside the microcontroller, the timing awakening module is used for awakening the acquisition device, and the alarm module is used for automatically generating alarm information when the acquired value exceeds a set threshold value.

The tilt sensor is a tilt sensor of the SCA100T series or SCA103T series, such as SCA100T-D01 chips or SCA103T-D04 chips, in particular, the high-precision single-axis tilt sensor SCA103T-D04 is a high-precision single-axis tilt sensor based on 3D MEMS, which provides a level of performance on a level of a leveling instrument. The sensing element of the tilt sensor needs to be parallel to the measuring platform during measurement, and the two axes of the tilt sensor need to be perpendicular to each other. The SCA103T-D04 tilt sensor has a weak temperature dependence, high resolution, low noise and robust sensing element, and furthermore the tilt sensor of the VTI is insensitive to vibrations, because of the increased damping inside the sensing element and can withstand mechanical impact forces up to 20000 g. The reference voltage module is an ADR4533 chip and provides accurate and stable reference voltage for the tilt sensor. The ADC module is an AD7793 chip, and an AD7793 chip with 24-bit sampling is adopted to convert an analog signal measured by the tilt sensor into a digital signal and output the digital signal to the microcontroller.

The laser ranging sensor is a Ferris L series ranging module and is used for measuring the height of the installation position of the tilt angle sensor from the ground, and the horizontal displacement is obtained by multiplying the ground clearance value by sin (tilt angle value). The precision of the Ferris L series distance measurement module is +/-1 mm, the measuring range is 0.1-40 m, the speed measurement is 1Hz-20Hz adjustable, the resolution is 1mm, the repetition precision is +/-1 mm, and the Ferris L series distance measurement module is a stable and accurate industrial module. The RX and TX of the laser ranging sensor are connected with the RX and TX interfaces of the microcontroller.

The temperature sensor is a DS18B20 chip, the temperature sensor DS18B20 is controlled through a microcontroller STM32L151C8, temperature compensation is carried out on the inclination angle of the inclination angle sensor according to temperature information, and the inclination angle is basically kept unchanged under the conditions of different temperatures and no interference of other factors.

LORA communication module is the sx1276 or sx1278 chip for a plurality of nodes tilt sensor, temperature sensor, laser rangefinder sensor's network deployment communication, if use LORA communication module uploads cloud server, need increase a LORA gateway, the LORA gateway includes consecutive power, LORA module, 4G/5G module, and LORA communication module and LORA module communication connection, 4G/5G module and cloud server communication connection to upload to cloud server with data. The LORA communication module is used for wireless communication, monitoring of a plurality of sensor monitoring points can be achieved, and the problem that traditional wiring of application scenes which are long in distance and difficult in power supply is difficult is solved.

The NB-IOT communication module is a BC26 chip and is used for receiving data sent by the microcontroller and sending the data to the cloud server by combining NB-IOT technology and the antenna module special for NB-IOT. The antenna module is used for transmitting and receiving electromagnetic wave signals, and the NB-IOT communication mode is suitable for a single monitoring point.

The storage module is used for storing the information uploaded to the cloud server locally.

The inclination angle sensor measures an inclination angle alpha, the laser ranging sensor measures a ground clearance h, whether potential safety hazards exist in deep foundation pit supporting piles, high and large templates, high slopes and the like can be judged according to the monitored inclination angle alpha and the monitored ground clearance h, two communication modes are switched according to actual needs, and monitoring data are uploaded.

In summary, the wireless tilt angle laser acquisition device has the following advantages:

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. The wireless inclination angle laser acquisition device is characterized by comprising a microcontroller, an inclination angle sensor, a laser ranging sensor and a wireless communication module, wherein the inclination angle sensor is connected with the microcontroller and used for measuring an inclination angle, the laser ranging sensor is used for measuring the ground clearance of the acquisition device, and the wireless communication module is used for uploading acquired data of the inclination angle sensor and the laser ranging sensor to a cloud server.

2. The wireless tilt laser acquisition device according to claim 1, wherein the wireless communication module comprises an LORA communication module for networking communication between the tilt sensors and the laser ranging sensors of the plurality of nodes and uploading acquired data to a cloud server through an LORA gateway, and an NB-IOT communication module for directly uploading acquired data of the tilt sensors and the laser ranging sensors of a single node to the cloud server, the NB-IOT communication module is connected with the cloud server through an antenna module, and the LORA communication module is connected with the cloud server through the LORA gateway.

3. The wireless tilt laser collection device of claim 1, further comprising a temperature sensor coupled to the microcontroller for monitoring temperature to compensate the tilt sensor.

4. The wireless tilt laser acquisition device according to claim 1, further comprising an ADC module connected between the tilt sensor and the microcontroller, and a reference voltage module connected between the tilt sensor and the power supply module, wherein the ADC module is configured to convert an analog signal into a digital signal, and the reference voltage module is configured to provide a reference voltage for the tilt sensor.

5. The wireless tilt angle laser acquisition device according to claim 1, further comprising a storage module connected to the microcontroller and configured to locally store information uploaded to the cloud server, wherein the microcontroller is internally provided with a timing wake-up module and an alarm module.

6. The wireless tilt angle laser acquisition device according to claim 1, wherein the sensing element of the tilt angle sensor needs to be parallel to the measuring platform during measurement, and the two axes of the tilt angle sensor need to be perpendicular to each other.

7. The wireless laser collection device for the tilt angle of claim 1, wherein the microcontroller is an STM32L151C8 chip or an MSP430 chip, the laser ranging sensor is a skyscraper L series ranging module, and the tilt angle sensor is an SCA100T-D01 chip or an SCA103T-D04 chip.

8. The wireless tilt laser acquisition device according to claim 2, wherein the LORA communication module is an sx1276 or sx1278 chip, and the NB-IOT communication module is a BC26 chip.

9. The wireless tilt laser acquisition device according to claim 3, wherein the temperature sensor is a DS18B20 chip.

10. The wireless tilt laser acquisition device according to claim 4, wherein the reference voltage module is an ADR4533 chip, and the ADC module is an AD7793 chip.