CN214253412U

CN214253412U - Wireless cable dynamometer based on 4G cloud computing

Info

Publication number: CN214253412U
Application number: CN202120239822.0U
Authority: CN
Inventors: 周球尚; 宗刚; 韩飞; 任晓崧
Original assignee: Shanghai Huang Pu River Bridges And Tunnel Operation And Management Co ltd; Shanghai Dige Testing Technology Co ltd; Tongji University
Current assignee: Shanghai Huang Pu River Bridges And Tunnel Operation And Management Co ltd; Shanghai Dige Testing Technology Co ltd; Tongji University
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-09-21
Anticipated expiration: 2031-01-28

Abstract

A clueless dynamometer based on 4G cloud computing is characterized in that equipment comprises: the device comprises a power supply module, a sensing module, a storage module, a communication module and a main control chip; the binding belt also comprises a shell and a binding belt; wherein: each module is integrated on a circuit board, is arranged in the shell through the circuit board, fixes the whole functional equipment on the bridgewire of the tested object through the shell and the binding tape, and ensures that the sensitive end of the sensing module is contacted with the bridgewire of the tested object; the power supply module provides energy for the whole equipment; the sensing module is used for acquiring acceleration data; the storage module is used for storing the acquired acceleration data and sending the acceleration data to the cloud end through the communication module; the communication module adopts a 4G module or a 5G module to transmit the acquired data to the cloud end; the main control chip is simultaneously connected with the power supply module, the sensing module, the storage module and the communication module and used for managing data acquisition, storage and transmission.

Description

Wireless cable dynamometer based on 4G cloud computing

Technical Field

The application relates to a monitoring (detecting) device applied to a bridge cable.

Background

For a large bridge with a stay cable (pull rod) structure, cable force change is an important index for representing series structural states such as bearing capacity, integrity, stability and the like of an upper structure of the bridge. The cable force is regularly detected or monitored for a long time, and the cable force monitoring method is an important work content for bridge operation and maintenance.

The traditional detection equipment is divided into two types, one type is wired equipment, a sensor-acquisition instrument-computer mode is adopted, and data are transmitted from the sensor through a connecting wire and acquired and then received by a computer; the other type is wireless equipment, which adopts a sensor-gateway-computer mode, and data is transmitted to a computer for receiving on site through a wireless gateway.

When the traditional equipment is used for field detection, a computer, a sensor, a power supply and the like need to be carried, the equipment is heavy, wired equipment is complicated in wiring, networking and debugging of wireless equipment are complex, and accordingly field work efficiency is low.

Hundreds of inhaul cables are frequently used in a large bridge, the labor consumption is high when one-time comprehensive detection is completed, the time is long, the cost is high, and the targeted cable force detection frequency and special detection requirements (such as the instant cable force detection in typhoon days) of a maintenance unit are difficult to meet.

Disclosure of Invention

The utility model provides a not enough of prior art is overcome to aim at of this application, a no thread dynamometer based on 4G cloud calculates, for monitoring (detection) equipment, is applied to the bridge cable, through integrated design, installs on the bridge cable, carries out the discernment of bridge cable force conveniently.

Technical scheme

A wireless cable force gauge, characterized in that the apparatus comprises: the device comprises a power supply module, a sensing module, a storage module, a communication module and a main control chip; the binding belt also comprises a shell and a binding belt; wherein: each module is integrated on a circuit board, is arranged in the shell through the circuit board, fixes the whole functional equipment on the bridgewire of the tested object through the shell and the binding tape, and ensures that the sensitive end of the sensing module is contacted with the bridgewire of the tested object; the power supply module provides energy for the whole equipment; the sensing module is used for acquiring acceleration data; the storage module is used for storing the acquired acceleration data and sending the acceleration data to the cloud end through the communication module; the communication module adopts a 4G module or a 5G module to transmit the acquired data to the cloud end; the main control chip is simultaneously connected with the power supply module, the sensing module, the storage module and the communication module and used for managing data acquisition, storage and transmission.

Through supporting accessory, install this application equipment on the bridge cable, carry out the discernment of bridge cable force conveniently. The data of the equipment is directly transmitted to the cloud end, cables are not needed, and a computer is not needed to receive data.

Drawings

FIG. 1 is a schematic diagram of hardware modules of the device according to embodiment 1

FIG. 2 schematic diagram of a device main control chip in embodiment 1

FIG. 3 is a circuit diagram of a data acquisition module according to embodiment 1

FIG. 4 circuit diagram of power management module in embodiment 1

FIG. 5 is a circuit diagram of a data transmission module according to embodiment 1

FIG. 6 is a circuit diagram of a data storage module according to embodiment 1

Fig. 7 shows an application example 2: 24-hour uninterrupted monitoring of cable force change condition

Detailed Description

The technical solutions provided in the present application will be further described with reference to the following specific embodiments and accompanying drawings. The advantages and features of the present application will become more apparent in conjunction with the following description.

It should be noted that the embodiments of the present application have a better implementation and are not intended to limit the present application in any way. The technical features or combinations of technical features described in the embodiments of the present application should not be considered as being isolated, and they may be combined with each other to achieve a better technical effect. The scope of the preferred embodiments of this application may also include additional implementations, and this should be understood by those skilled in the art to which the embodiments of this application pertain.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

The drawings in the present application are in simplified form and are not to scale, but rather are provided for convenience and clarity in describing the embodiments of the present application and are not intended to limit the scope of the application. Any modification of the structure, change of the ratio or adjustment of the size of the structure should fall within the scope of the technical disclosure of the present application without affecting the effect and the purpose of the present application. And the same reference numbers appearing in the various drawings of the present application designate the same features or components, which may be employed in different embodiments.

Example 1

As an example, as shown in fig. 1, the apparatus is composed of: the device comprises a power supply module, a sensing module, a storage module, a communication module and a main control chip; (FIG. 1)

The binding belt also comprises a shell and a binding belt; (see application example scene)

Wherein:

each module is integrated on a circuit board, is arranged in the shell through the circuit board, fixes the whole functional equipment on the bridgewire of the tested object through the shell and the binding tape, and ensures that the sensitive end of the sensing module is contacted with the bridgewire of the tested object;

the power supply module provides energy for the whole equipment. DC long-term power, internal battery power, external battery power, etc.

The sensing module is used for acquiring acceleration data;

the storage module is used for storing the acquired acceleration data and appointing time to send the acceleration data to the cloud end through the communication module according to an appointed format;

the communication module adopts a 4G module or a 5G module, and transmits the acquired data to the cloud.

The main control chip is a control device, is connected with the power supply module, the sensing module, the storage module and the communication module, and is used for managing data acquisition frequency, acquisition modes and transmission modes.

By way of example and not limitation, as shown in fig. 2, the main control chip MCU adopts a chip of model STM32F405RG, the data acquisition module adopts a BMI160 six-axis sensing chip, the power management module adopts an SGM41511 chip, the data transmission module adopts a "guan-tong NL 668" 4G communication module, and the data storage module adopts a GD25Q128CSIGR chip.

As shown in fig. 3, the connection description of the main control chip:

MCU all has the interface with each function submodule to link to each other, wherein:

in the aspect of data acquisition,the MCU is connected with the six-axis sensing chip of the BMI160 of the data acquisition module through a pin 61 and a pin 62, the MCU and the data acquisition module perform data interaction with the data acquisition module in an IIC bus protocol mode, and the MCU can send control parameters such as sampling frequency and sampling range to the acquisition module through the IIC protocol and can also read data from the acquisition module.

In the aspect of data transmission,MCU (microprogrammed control Unit) universal serial busThe pin 25, the pin 26, the pin 27, the pin 42, the pin 44, the pin 45, the pin 55, the pin 56 and the pin 59 are connected with a data transmission module (4G), and the MCU and the data acquisition module (4G) perform data interaction in a USB protocol mode.

In the aspect of data storage,the MCU is connected with the data storage module through

pins

20, 21, 22 and 23, and exchanges data through an SPI bus protocol.

In the aspect of power supply of the power supply,a pin 24 of the MCU is connected with the battery through a divider resistor to reduce the voltage of the battery to a collectable range, and AD analog-to-digital conversion is integrated in the pin 24 to convert a voltage signal into a digital signal, so that the current electric quantity of the battery is collected; the MCU is connected with the power management module through pin 1, pin 13 and pin 48, so that the MCU obtains stable 3.3V working voltage.

As shown in fig. 4, the data acquisition module employs a BMI160 six-axis sensing chip, wherein:

pin 13 and pin 14 are connected to the main chip, receive control commands of the main chip through the IIC protocol and provide sensor data to the main chip. Further, as an embodiment, the

pins

13 and 14 are further provided with R26 and R27, respectively. The R26 and R27 are pull-up resistors of the IIC bus, one ends of which are connected to pin 13 and pin 14, respectively, and the other ends of which are connected to the power supply VDD.

Pin 5 and pin 6 are grounded and connected with a power management circuit through pin 7 and pin 8 respectively, so that the working voltage of 3.3v is obtained. Further, as an embodiment, capacitors C60 and C62 are further provided to filter the power supply, thereby reducing input power supply ripples.

As shown in fig. 5, the power management module employs an SGM41511 chip to provide 3.3V operating voltage for each module of the device and perform charging management for the battery, where:

and the pin 5 and the pin 6 are connected with the MCU, perform data interaction through an IIC bus protocol and receive a control instruction of the MCU.

The

pins

15 and 16 share an output power supply interface for each module of the system, and then the voltage is reduced to 3.3V by an LDO circuit (not shown in the figure, but in the prior art), so as to provide working voltage for the MCU, the data acquisition module, the data transmission module, and the data storage module in the motherboard.

Pin 1 and pin 24 are direct-current power supply input interfaces, namely charging interfaces, and the received charging voltage is 5V.

The

pins

13 and 14 are connected with the battery, so that the charging management can be carried out on the battery. Specifically, the

pins

13 and 14 are battery interfaces, and when a charger (at the above-mentioned pins 1 and 24) is connected to charge the device, the power management module provides a 4.2V charging voltage for the battery, and performs anti-overcharge management, that is, stops charging after being fully charged.

Pins

13, 14 receive battery discharge input when the device is operating.

As shown in fig. 6, the data transmission module adopts a 4G module, specifically selects pan-he-nan NL668 as an embodiment, and can support the domestic whole network communication band.

Specifically, the connection relationship of the pins is as follows:

is connected to the 4G antenna through pin 49 for receiving and transmitting data through the 4G antenna.

Pins

14, 15, 16 and 17 are SIM card pins through which an electronic SIM card is connected. The electronic SIM card provides network communication service authentication for the 4G module.

And the pin 7 is a power input interface and is connected with the power management module to obtain 3.3V working voltage.

The pin 69, the pin 70, the pin 71, the pin 1, the pin 2, the pin 4 and the pin 20 are respectively connected with the MCU and receive the control of the MCU, wherein the pin 69, the pin 70 and the pin 71 are pins for data exchange, and the MCU transmits data to the transmission module for transmission through the pins by a USB protocol; pins 1, 2, 4 and 20 are conventional function control pins, and the MCU can implement general functions of enabling control, disabling, resetting, etc. through these pins.

The data storage module adopts a GD25Q128CSIGR chip, and the chip provides 128Mbit storage capacity:

and the MCU is connected with the MCU through

pins

1, 2, 5 and 6, and data exchange is carried out according to an SPI bus protocol. Further, a resistor R40 is provided, and R40 is a pull-up resistor of the SPI chip selection.

The pin 4 is grounded, the pin 8 is connected with the power management module, and the power module provides 3.3V working voltage for the data storage module. Further, as an embodiment, a capacitor C11 and a capacitor C58 are further provided for filtering the input power supply, so as to reduce input power supply ripples.

Application and usage scenarios:

based on the device developed in this embodiment 1, the collected data is provided to the cloud, and then further applied: and the cloud end automatic calculation is realized, and the real-time output from the acceleration original data to the cable force result is realized based on an industry standard principle self-programming algorithm. The technology related to the subsequent application is not the invention task of the technical scheme of the application.

The use scenario is as follows:

application example 1: fast detection of cable force

Through the base and the binding belt matched with the equipment, the equipment is directly attached to the bridge cable, and full-automatic rapid detection of the cable force can be completed within 30 seconds. No special skill requirement is required for the detection personnel.

As shown in fig. 7, application example 2: long-term monitoring of cable force

The long-term power supply is realized through an external low-voltage 12v power supply, the equipment is placed on the bridge cable for a long time, and the change condition of the cable force is continuously monitored within 7-24 hours.

Claims

1. A clueless dynamometer based on 4G cloud computing is characterized in that equipment comprises: the device comprises a power supply module, a sensing module, a storage module, a communication module and a main control chip;

the binding belt also comprises a shell and a binding belt;

wherein:

the power supply module provides energy for the whole equipment;

the sensing module is used for acquiring acceleration data;

the storage module is used for storing the acquired acceleration data and sending the acceleration data to the cloud end through the communication module;

the communication module adopts a 4G module or a 5G module to transmit the acquired data to the cloud end;

the main control chip is simultaneously connected with the power supply module, the sensing module, the storage module and the communication module and used for managing data acquisition, storage and transmission.