CN211317587U

CN211317587U - Multichannel data collection station of vibrating wire formula sensor based on LORA transmission

Info

Publication number: CN211317587U
Application number: CN202020006062.4U
Authority: CN
Inventors: 吴福强; 谷晓胜; 曹文; 郭世勇; 金向杰; 白永刚
Original assignee: Zhengzhou Guorong Environmental Protection Technology Co ltd
Current assignee: Zhengzhou Guorong Environmental Protection Technology Co ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-08-21
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a multichannel data collection station of string mode sensor shakes based on LORA transmission, including singlechip, LORA module, multichannel data acquisition unit and power module, the LORA module has two, and one is short distance miniwatt LORA module, and another is the high-power LORA module of long distance, power module is singlechip, LORA module and the power supply of multichannel data acquisition unit, short distance miniwatt LORA module and multichannel data acquisition unit connection, multichannel data acquisition unit is connected with the singlechip, the singlechip is connected with the high-power LORA module of long distance. The utility model discloses it arranges in a flexible way in LORA transmission distance, no longer adopts wired transmission, and its work load greatly reduced, the effectual cost that has reduced compares with current wired transmission's multichannel data collection station, and the vibrating string formula sensor quantity that can monitor and control is tens of times increase.

Description

Multichannel data collection station of vibrating wire formula sensor based on LORA transmission

Technical Field

The utility model belongs to the technical field of sensor data collection station technique and specifically relates to a multichannel data collection station of vibrating wire formula sensor based on LORA transmission is related to.

Background

A vibrating wire transducer (resonant sensor) is a resonant sensor with a strained metal wire as a sensing element. After the length of the string is determined, the variation of the natural vibration frequency can represent the magnitude of the tensile force applied to the string, and an electric signal in a certain relation with the tensile force can be obtained through a corresponding measuring circuit.

The vibrating wire sensor has the features of high anti-interference capacity, less influence of electric parameters, less zero drift, less influence of temperature, stable and reliable performance, high vibration resistance, long service life, etc. it is used in various test purposes, such as vibrating wire pressure gauge, soil pressure gauge, water pressure gauge, strain gauge, force (stress) gauge, reinforcing bar gauge, torsion gauge, displacement gauge, reaction gauge, suspended load gauge, inclinometer, etc. The method is widely applied to testing of port engineering, civil construction, road and bridge, mine metallurgy, mechanical ships, reservoir dams, foundation foundations and the like, becomes an indispensable testing means in engineering and scientific research, and shows wide application and development prospects.

The vibrating wire sensors are applied to engineering, the number of the vibrating wire sensors is not two, but hundreds of vibrating wire sensors are used simultaneously, and when the vibrating wire sensors measure simultaneously, a multi-channel data acquisition unit is needed to collect, concentrate and uniformly control data measured by the vibrating wire sensors in real time.

China with the notice number of CN204790408U specially used for 2015, 11 and 18 discloses a multi-channel data acquisition device based on a vibrating string type sensor, which is suitable for continuous data acquisition in the field of safety monitoring of civil structures and comprises a 32-channel selection switch circuit, a vibration exciting circuit, a vibration picking circuit, a power management circuit, a processor and an access and display circuit. The microprocessor generates and sends a PWM signal with specific frequency to deactivate the vibration string sensor, the acquisition module samples the output frequency value of the vibration pickup circuit and transmits the output frequency value to the microprocessor, the microprocessor processes and displays the acquired information, and simultaneously transmits the acquired information to the upper computer through RS 485. The utility model discloses use low pressure frequency sweep excitation mode, the collector only needs 3-5 frequency sweeps just can read out the intrinsic frequency value of sensor, has improved string formula data collection station's efficiency that shakes, is equipped with lightning protection circuit, built-in temperature sensing circuit, resistance type temperature sensor and mains voltage warning circuit in this embodiment, and data collection is accurate, and operation safety, stability. The data collection station of this patent adopts the RS485 interface to acquire the information of vibrating wire formula sensor and gives the host computer with information transfer, RS485 is a wired interface, the use is that need be with the net twine connection data collection station and vibrating wire formula sensor and the host computer that accord with RS485, this is to the big engineering of some scales, its wiring is exactly a very big work load, and because the effective transmission distance of net twine is near, need increase signal amplifier in the middle of the net twine, in order to satisfy the needs of remote transmission signal, and the net twine still can be impaired because of the accident situation, the investigation is got up just difficultly at this time, also direct influence the receipt of information.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art not enough, provide a multichannel data collection station of vibrating wire formula sensor based on LORA transmission, it arranges in a flexible way in LORA transmission distance, no longer adopts wired transmission, its engineering volume greatly reduced, effectual the cost is reduced compares with current wired transmission's multichannel data collection station, and the vibrating wire formula sensor quantity that can monitor and control is tens times of increases.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multichannel data collection station of vibrating wire formula sensor based on LORA transmission, includes singlechip, LORA module, multichannel data acquisition unit and power module, the LORA module has two, and one is short distance low power LORA module, and another is the high-power LORA module of long distance, power module is singlechip, LORA module and the power supply of multichannel data acquisition unit, short distance low power LORA module is connected with multichannel data acquisition unit, multichannel data acquisition unit is connected with the singlechip, the singlechip is connected with the high-power LORA module of long distance.

Corresponding to the multi-channel data acquisition unit, LORA modules are arranged on the vibrating wire type sensor and the upper computer.

Further, the single chip microcomputer is a 32-bit single chip microcomputer.

Further, the LORA module is a transceiver module.

Further, the working frequency band of the LORA module is one or more of 433, 470, 868 and 915 MHz.

Further, the operating mode of the LORA module is a node in a MESH mode.

Further, the short-distance low-power LORA module is of a type SX1268, the maximum transmission distance is 3Km, and the maximum power is 0.5W.

Furthermore, the model of the long-distance high-power LORA module is SX1278, the maximum transmission distance is 20Km, and the maximum power is 5W.

Further, the multi-channel data acquisition unit is one of a 12-channel, a 16-channel and a 20-channel.

The utility model discloses a multichannel data collection station of vibration wire formula sensor based on LORA transmission, as the intermediate node of vibration wire formula sensor, to a plurality of controllable vibration wire formula sensors down, to last can be with sending for the host computer after the data processing that the vibration wire formula sensor acquireed, adopt hierarchical node mode, all vibration wire formula sensors carry out effectual management among the effectual engineering survey.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a multichannel data collection station of vibrating wire formula sensor based on LORA transmission adopts LORA's communication mode, for wireless communication mode, compares with traditional multichannel data collection station, owing to there is not the problem of wiring, consequently arranges more in a flexible way, and simpler.

2. The utility model discloses a multichannel data collection station of vibration wire formula sensor based on LORA transmission adopts LORA's communication mode, can effectually distinguish the management to vibration wire formula sensor in LORA's transmission distance to can not leak any one vibration wire formula sensor.

3. The utility model discloses a multichannel data collection station of vibrating wire formula sensor based on LORA transmission adopts LORA's communication mode, and its host computer can set up at will in the certain within range of engineering building site, does not influence acquireing of data.

4. The utility model discloses a multichannel data collection station of string vibration formula sensor based on LORA transmission adopts LORA's communication mode, through the star extension, can monitor and manage thousands of string vibration formula sensors simultaneously, and the string vibration formula sensor that far more than current multichannel data collection station can manage.

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a schematic view of the star connection of the present invention.

In the figure: the system comprises 1-a multi-path data acquisition unit, 2-a vibrating wire type sensor with an LORA module, 3-an upper computer with an LORA module, 1 a-a single chip microcomputer, 1 b-a short-distance low-power LORA module, 1 c-a long-distance high-power LORA module, 1 d-a multi-path data acquisition unit and 1 e-a power supply module.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

As shown in fig. 1, a multi-channel data collector 1 of a vibrating wire sensor based on low transmission comprises a single chip 1a, low modules 1b and 1c, a multi-channel data collection unit 1d and a power module 1e, wherein the single chip 1a is a 32-bit single chip, the low modules 1b and 1c are transceiver modules, the operating frequency bands of the low modules 1b and 1c are 433MHz, the operating modes of the low modules 1b and 1c are nodes in a MESH mode, the multi-channel data collection unit 1d is a 16-channel, the low modules include two low power modules 1b with a short distance and a maximum transmission distance of 3Km and a maximum power of 0.5W, the low modules include a long distance and a high power module 1c with a maximum transmission distance of 20Km and a maximum power of 5W, and the power module 1e is the single chip 1a and 1e, LORA module 1b, 1c and multichannel data acquisition unit 1d power supply, short distance low power LORA module 1b is connected with multichannel data acquisition unit 1d, multichannel data acquisition unit 1d is connected with singlechip 1a, singlechip 1a is connected with long distance high power LORA module 1 c.

As shown in fig. 2, also be provided with the LORA module on vibrating wire sensor 2, host computer 3 also is provided with the LORA module, single the utility model discloses a multichannel data collection station 1 based on vibrating wire sensor of LORA transmission, manageable 16 vibrating wire sensors 2 at most in its end distance low power LORA module transmission distance coverage, a lot the utility model discloses a multichannel data collection station 1 based on vibrating wire sensor of LORA transmission combines together, and all vibrating wire sensors 2 in the manageable whole engineering project to transmit the data transfer who monitors it simultaneously for host computer 3, the order that can also quick response execution host computer 3 sent.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a multichannel data collection station of vibrating wire formula sensor based on LORA transmission which characterized in that: the device comprises a single chip microcomputer (1a), LORA modules (1b and 1c), a plurality of paths of data acquisition units (1d) and a power module (1e), wherein the number of the LORA modules (1b and 1c) is two, one LORA module (1b) is short-distance low-power, the other LORA module (1c) is long-distance high-power, the power module (1e) supplies power for the single chip microcomputer (1a), the LORA modules (1b and 1c) and the plurality of paths of data acquisition units (1d), the short-distance low-power LORA module (1b) is connected with the plurality of paths of data acquisition units (1d), the plurality of paths of data acquisition units (1d) are connected with the single chip microcomputer (1a), and the single chip microcomputer (1a) is connected with the long-distance high-power LORA module (1;

corresponding to the multi-channel data acquisition unit (1) of the vibrating wire sensor based on LORA transmission, LORA modules are arranged on the vibrating wire sensor (2) and the upper computer (3).

2. The multi-channel data acquisition unit of the vibrating wire sensor based on LORA transmission of claim 1, wherein: the single chip microcomputer (1a) is a 32-bit single chip microcomputer.

3. The multi-channel data acquisition unit of the vibrating wire sensor based on LORA transmission of claim 1, wherein: the LORA modules (1b, 1c) are transceiver modules.

4. The multi-channel data acquisition unit of the vibrating wire sensor based on LORA transmission of claim 3, wherein: the working frequency band of the LORA modules (1b and 1c) is one or more of 433, 470, 868 and 915 MHz.

5. The multi-channel data acquisition unit of the vibrating wire sensor based on LORA transmission of claim 4, wherein: the working mode of the LORA modules (1b and 1c) is a node in a MESH mode.

6. The multi-channel data acquisition unit of the vibrating wire sensor based on LORA transmission of claim 5, wherein: the short-distance low-power LORA module (1b) is SX1268, the maximum transmission distance is 3Km, and the maximum power is 0.5W.

7. The multi-channel data acquisition unit of the vibrating wire sensor based on LORA transmission of claim 5, wherein: the model of the long-distance high-power LORA module (1c) is SX1278, the maximum transmission distance is 20Km, and the maximum power is 5W.

8. The multi-channel data acquisition unit of the vibrating wire sensor based on LORA transmission of claim 1, wherein: the multi-path data acquisition unit (1d) is one of a 12-path channel, a 16-path channel and a 20-path channel.