Beam string structure steel support member supervision method based on Bluetooth

Abstract

The invention relates to a beam string structure steel support member supervision method based on Bluetooth. A storage yard for storing members and a project construction site are respectively provided with a plurality of Bluetooth gateways with absolute position information; the steel support members are respectively provided with a Bluetooth supervision device; the Bluetooth supervision equipment comprises a sensor for monitoring the state information of the steel support member, a digital-to-analog converter, a microcontroller, a low-power-consumption Bluetooth module and a shell; the relative position of each component is obtained through conversion with the relative position of the Bluetooth gateway with absolute position information; and data information of the component is stored in the microcontroller. According to the invention, low-power-consumption Bluetooth is adopted for real-time positioning, and meanwhile, automatic warehouse-in and warehouse-out statistics and on-site inventory can be conveniently carried out in cooperation with a mobile phone; the problem that signals sent by the RFID tag are shielded by steel is avoided, and two-dimensional code scanning and reading are not needed; the low-power-consumption Bluetooth is low in power consumption and small in size, the endurance can last for many years, and due to low power consumption, real-time positioning is achieved.

Description

Technical Field

[0001] The invention relates to a supervision method for a foundation pit steel support component, in particular to a supervision method for a beam-string steel support component based on Bluetooth, and belongs to the technical field of building foundation pit construction. Background Art

[0002] In order to ensure the safety of underground structure construction and the surrounding environment of the foundation pit, it is necessary to adopt support, reinforcement and protection measures for the side walls of the foundation pit and the surrounding environment. Whether it is a deep foundation pit project for high-rise buildings or subway construction, since most of them are excavated in cities, there are usually various structures such as traffic arteries, existing buildings or pipelines around the foundation pit. In order to ensure the safety of the surrounding environment of the foundation pit, save construction time and save costs, the steel string beam support structure system is widely used.

[0003] The components of the steel string beam support are all standard parts that can be used repeatedly. It is necessary to quickly query the basic information of the components (production date, inspection date, maintenance information, etc.), know the real-time location of the components, and perform efficient and fast statistics and supervision, as well as automatic storage and warehousing, so as to achieve safe and efficient circulation. However, the existing technology has the following problems:

[0004] 1. In the prior art, GPS is usually used for positioning. GPS positioning consumes a lot of power and the battery cannot be used for a long time. Therefore, positioning is only performed once a day. Real-time positioning is not possible, and automatic statistics of inbound and outbound storage are not possible. In addition, the cost is high, and each device needs to be equipped with a SIM traffic card.

[0005] 2. In the prior art, RFID tags or QR codes are used for inventory. RFID tags have a short transmission distance and are severely shielded by steel, making it difficult to achieve automatic inventory and warehousing. QR codes require scanning equipment for reading, which is more troublesome.

[0006] Comparison patent:

[0007] Publication date: 2022.07.08, publication number: CN114723364A, name: “Foundation pit steel support turnover supervision method” Chinese patent document. Summary of the invention

[0008] The purpose of the present invention is to provide a Bluetooth-based method for monitoring steel support components of a tensioned beam. By setting a Bluetooth beacon on the component and setting a Bluetooth gateway with GPS positioning on the yard, project, and transport vehicle, the location of the steel component can be known in real time. The cost is low, and the Bluetooth built-in mobile phone can be used to automatically count the warehouse in and out orders, which is highly efficient.

[0009] The present invention adopts the following technical solutions:

[0010] A method for monitoring steel support components of a beam string based on Bluetooth, wherein a plurality of Bluetooth gateways with absolute position information are arranged at a storage yard for components and a project construction site respectively; a Bluetooth monitoring device is installed on each steel support component; the Bluetooth monitoring device comprises a sensor 4 for monitoring status information of the steel support component, a digital-to-analog converter 5, a microcontroller 2, a low-power Bluetooth module 3 and a housing 1; the relative position of each component is obtained by converting the relative position with the Bluetooth gateway with absolute position information; the microcontroller 2 stores the status information of the steel support component monitored by the sensor 4.

[0011] Preferably, the sensor 4 is in close contact with the surface of the component, and includes a strain sensor and a temperature sensor.

[0012] Furthermore, the data information of the component is stored on the platform server, and a one-to-one correspondence is formed through the unique code of the Bluetooth low energy module 3; the function of the microcontroller is to read the data of the steel support component status information and calibrate the packaging; the status information of the steel support component includes strain and temperature information.

[0013] Furthermore, the data information of the component includes factory information, maintenance information, real-time location information, and historical trajectory information.

[0014] Preferably, the relative position of each component is obtained by performing conversion based on the signal strength received by the Bluetooth gateway from the component Bluetooth device.

[0015] Furthermore, the relative position is accurate to the relative position of two-dimensional coordinates in the plane.

[0016] Preferably, the shell is divided into two layers, the upper layer is used to install electronic components, and the lower layer is used to place the sensor 4; during installation, the sensor 4 is first installed on the surface of the component and fixed, the wires are connected, and then the rest of the Bluetooth monitoring device is put over the sensor and fixed to the surface of the component, and waterproof measures are taken.

[0017] Preferably, the steps for yard supervision and maintenance are as follows: a Bluetooth gateway with GPS positioning is set up at a certain distance in the yard; the Bluetooth gateway collects component information in real time and sends it to the server in real time, and displays the location and component information of each component through the software platform; each time a component is maintained, the Bluetooth ID of the component is quickly read through a mobile electronic device, and the maintenance information is entered.

[0018] Furthermore, statistics on component in and out of the warehouse are as follows: Outgoing: including yard outgoing and project outgoing; a Bluetooth gateway with GPS positioning is placed on the transport vehicle and bound to the license plate number. By setting the signal range, the gateway can receive the components on the transport vehicle. By ensuring that the component signal fluctuation is less than the set value during the process of leaving the yard or project, all components on the vehicle are confirmed to form an outgoing order; the outgoing order is reconfirmed through a fixed Bluetooth gateway, and confirmed through a mobile phone Bluetooth scan when a problem occurs; Incoming: including yard ingoing and project ingoing; the yard or project has a specific location and range on the map. When the transport vehicle enters the scope of the project, the component entry is initially confirmed, and the fixed Bluetooth gateway is randomly triggered for secondary confirmation to complete the confirmation of the component entry.

[0019] Furthermore, transportation supervision: the component information of the transport vehicle is collected in real time through the on-board Bluetooth gateway, and the location information is uploaded in real time through GPS positioning. During the transportation process, real-time tracking can be performed; project use supervision: for each project, Bluetooth gateways are set at intervals according to the size of the project. When the transport vehicle enters the scope of the project, that is, the components arrive at the project site, the Bluetooth gateway on the project begins to supervise the components of the project, and the component list is automatically entered into the project library; inventory: turn on the Bluetooth of the electronic mobile device, the management personnel inspect the components, supervise the inventory of the components of the yard or project, and the mobile phone directly records the inventory list and verifies and updates the component data.

[0020] The beneficial effects of the present invention are:

[0021] 1) Low-power Bluetooth is used for real-time positioning, and it is convenient to cooperate with mobile phones for automatic in-and-out statistics and on-site inventory; it avoids the problem of RFID tag signals being shielded by steel, and there is no need to scan QR codes for reading;

[0022] 2) Bluetooth low energy consumption is low, the size is small, and the battery life can last for many years. Due to the low power consumption, real-time positioning can also be achieved;

[0023] 3) Data collection and positioning over a large area can be achieved through several gateways, without the need for each component to be equipped with a SIM card;

[0024] 4) Taking advantage of the low height of the steel support of the beam string in the foundation pit, the target positioning requirement can be achieved through two-dimensional positioning under the plane, which improves the positioning error tolerance;

[0025] 5) It realizes full-cycle supervision and real-time understanding of the status of each component (strain, maintenance information, etc.), avoids the flow of unusable components into the project, and ensures the safety of project use.

[0026] 6) Automatic inventory counting improves efficiency, reduces manpower, and reduces errors; by providing decision-making references for data management, it improves turnover rate and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the elevation structure of the Bluetooth monitoring device in the present invention.

[0028] Figure 2 It is a top view of the Bluetooth monitoring device in the present invention.

[0029] Figure 3 yes Figure 1 Schematic diagram of the sensors in the system, which include strain sensors and temperature sensors.

[0030] Figure 4 It is a schematic diagram of signal transmission.

[0031] Figure 5 It is a schematic diagram of the full-cycle supervision process of the beam-string steel support components.

[0032] Figure 6 This is the layout plan of the Bluetooth gateways in the yard.

[0033] Figure 7 This is the layout plan of the Bluetooth gateway at the project site.

[0034] In the figure, 1. Housing, 2. Microcontroller, 3. Low-power Bluetooth module, 4. Sensor. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] See also Figure 1-7 A method for monitoring steel support components of a tensioned beam based on Bluetooth, wherein a plurality of Bluetooth gateways with absolute position information are arranged at a storage yard for components and a project construction site; a Bluetooth monitoring device is installed on each steel support component; the Bluetooth monitoring device comprises a sensor 4 for monitoring the status information of the steel support component, a digital-to-analog converter 5, a microcontroller 2, a low-power Bluetooth module 3 and a housing 1; the relative position of each component is obtained by converting the relative position with the Bluetooth gateway having absolute position information (specifically, the relative position of each component is obtained according to the signal strength of the Bluetooth gateway received by the component Bluetooth device, and the relative position is accurate to the relative position of the two-dimensional coordinate in the plane); the microcontroller 2 stores the data information of the component.

[0037] In this embodiment, see Figure 1-3 The sensor 4 is closely attached to the surface of the component and includes a strain sensor and a temperature sensor.

[0038] In this embodiment, the data information of the components stored in the microcontroller 2 includes factory information, maintenance information, real-time location information, historical trajectory information, and status information monitored by sensors; the status information includes strain and temperature information.

[0039] In this embodiment, see Figure 1 The shell is divided into two layers, the upper layer is used to install electronic components, and the lower layer is used to place the sensor 4. During installation, the sensor 4 is first installed on the surface of the component and fixed, and the wires are connected. Then, the rest of the Bluetooth monitoring device is put on the sensor and fixed to the surface of the component, and waterproof measures are taken.

[0040] The following is further explained in several parts:

[0041] 1. Install Bluetooth monitoring equipment on the component:

[0042] The component id corresponds to the device id one by one. The component information corresponding to each id includes factory information (name, factory date, test report, etc.), maintenance information (maintenance date, maintenance content, etc.), location information (real-time location, historical trajectory), status information (strain, temperature, etc.), etc. The real-time location is converted with the relative position of the Bluetooth gateway with absolute location information to obtain the relative position of each component, which is specifically converted according to the signal strength of the Bluetooth gateway receiving the component Bluetooth device.

[0043] The Bluetooth monitoring equipment includes sensors, analog-to-digital converters, microcontrollers, low-power Bluetooth modules, batteries, and housings. Sensors are used to monitor the state of the structure, including strain sensors and temperature sensors, measure the strain and temperature of the components, output analog signals, convert them into digital signals through analog-to-digital converters, and then transmit the digitized data wirelessly through Bluetooth modules. The microcontroller controls the entire system and performs data acquisition control, such as setting sampling frequency and controlling power management. The housing is divided into two layers. The first layer is used to install electronic components, and the second layer is used to place sensors without sealing the board.

[0044] Installation method: First install the sensor on the surface of the component and fix it, connect the wires, then cover the sensor with the rest of the equipment and fix it to the surface of the component, and take waterproof measures.

[0045] 2. Yard supervision and maintenance:

[0046] A Bluetooth gateway with GPS positioning is set up at intervals in the yard. The Bluetooth gateway receives component information in real time and sends it to the server in real time, displaying the location and component information of each component through the software platform.

[0047] Each time a component is maintained, the Bluetooth ID of the component can be quickly read through the mobile phone to enter the maintenance information.

[0048] 3. Inventory statistics:

[0049] Outbound: including yard outbound and project outbound. The transport vehicle is placed with a Bluetooth gateway with GPS positioning and bound to the license plate number. By setting the signal range, the gateway can receive the components on the transport vehicle. If the component signal fluctuates very little during the process of leaving the yard or project, all components on the vehicle can be confirmed and an outbound order can be formed. The outbound order can be reconfirmed through a fixed Bluetooth gateway. If there is a problem, it can be confirmed through a mobile phone Bluetooth scan.

[0050] Warehousing: includes yard warehousing and project warehousing. The yard or project has a specific location and project scope on the map. When the transport vehicle enters the scope of the project, it means that the component has been put into storage, and then it is confirmed again through a fixed Bluetooth gateway.

[0051] 4. Transportation supervision:

[0052] The component information of the transport vehicle is collected in real time through the on-board Bluetooth gateway, and the location information is uploaded in real time through GPS positioning, so that real-time tracking can be carried out during the transportation process.

[0053] 5. Project usage supervision:

[0054] For each project, Bluetooth gateways are set up at intervals according to the size of the project. When the transport vehicle enters the scope of the project, that is, the components arrive at the project site, the Bluetooth gateway on the project begins to monitor the project components, and the component list is automatically entered into the project library.

[0055] 6. Inventory:

[0056] By turning on the Bluetooth of the mobile phone, the management personnel can conduct inspections on the components, which can facilitate the inventory of components supervised in the yard or project. The mobile phone can directly record the inventory list and verify and update the component data.

[0057] The present invention adopts low-power Bluetooth for real-time positioning, and is convenient for automatic in-and-out statistics and on-site inventory with mobile phones; avoids the problem of RFID tag sending signals being shielded by steel, and does not need to scan QR codes for reading; low-power Bluetooth has low power consumption, small size, and can last for many years. Due to low power consumption, real-time positioning is also achieved; a large area of ​​data collection and positioning can be achieved through several gateways, and each component does not need to be equipped with a SIM card; utilizing the low height of the steel support of the beam string in the foundation pit environment, the target positioning requirement can be achieved through two-dimensional positioning under the plane, and the fault tolerance rate of positioning is improved; the full-cycle supervision is achieved, and the status of each component (strain, maintenance information, etc.) is understood in real time, avoiding the flow of unavailable components into the project for use, and ensuring the safety of project use. Automatic inventory improves efficiency, reduces labor, and reduces errors; by providing decision-making references for data management, the turnover rate is improved, and the economic benefits are improved.

[0058] The above are preferred embodiments of the present invention. Those skilled in the art may also make respective changes or improvements thereon. Without departing from the general concept of the present invention, these changes or improvements shall fall within the scope of protection claimed by the present invention.

Claims

1. A method for monitoring a steel support member of a beam string based on Bluetooth, characterized in that: Multiple Bluetooth gateways with absolute location information are deployed at the component storage yard and project construction site; Each steel support member is equipped with a Bluetooth monitoring device; the Bluetooth monitoring device comprises a sensor (4) for monitoring the status information of the steel support member, a digital-to-analog converter (5), a microcontroller (2), a low-power Bluetooth module (3) and a housing (1); The relative position of each component is obtained by converting the relative position with the Bluetooth gateway having absolute position information; The microcontroller (2) stores the steel support member status information monitored by the sensor (4).

2. The Bluetooth-based beam string steel support member monitoring method according to claim 1, characterized in that: The sensor (4) is closely attached to the surface of the component and comprises a strain sensor and a temperature sensor.

3. The method for monitoring a steel support member of a beam string based on Bluetooth according to claim 2, characterized in that: The data information of the component is stored on the platform server and forms a one-to-one correspondence through the unique Bluetooth code of the low-power Bluetooth module (3); the function of the microcontroller is to read the data of the status information of the steel support component and calibrate and package it; the status information of the steel support component includes strain and temperature information.

4. The method for monitoring a steel support member of a beam string based on Bluetooth according to claim 3, characterized in that: The data information of the component includes factory information, maintenance information, real-time location information, and historical trajectory information.

5. The method for monitoring a steel support member of a beam string based on Bluetooth according to claim 1, characterized in that: Specifically, the relative position of each component is obtained by converting the signal strength of the component Bluetooth device received by the Bluetooth gateway.

6. The method for monitoring a steel support member of a beam string based on Bluetooth according to claim 5, characterized in that: The relative position is accurate to the relative position of the two-dimensional coordinates in the plane.

7. The method for monitoring a steel support member of a beam string based on Bluetooth according to claim 1, characterized in that: The outer shell is divided into two layers, the upper layer is used to install electronic components, and the lower layer is used to place the sensor (4); during installation, the sensor (4) is first installed and fixed on the surface of the component, and the wires are connected, and then the rest of the Bluetooth monitoring device is placed around the sensor and fixed to the surface of the component, and waterproof measures are taken.

8. The method for monitoring a steel support member of a beam string based on Bluetooth according to claim 1, characterized in that: Steps for yard supervision and maintenance: A Bluetooth gateway with GPS positioning is set up at intervals in the yard; the Bluetooth gateway collects component information in real time and sends it to the server in real time, and displays the location and component information of each component through the software platform; Each time a component is maintained, the Bluetooth ID of the component is quickly read through a mobile electronic device and the maintenance information is entered.

9. The method for monitoring a steel support member of a beam string based on Bluetooth according to claim 8, characterized in that: Statistics of components in and out of the warehouse: Outbound delivery: including yard outbound delivery and project outbound delivery; A Bluetooth gateway with GPS positioning is placed on the transport vehicle and bound to the license plate number. By setting the signal range, the gateway can receive the components on the transport vehicle. When the component signal fluctuation is less than the set value during the process of leaving the yard or project, all components on the vehicle are confirmed and a delivery order is formed; Through a fixed Bluetooth gateway, the delivery order is reconfirmed, and when there is a problem, it is confirmed through mobile phone Bluetooth scanning; Warehousing: including yard warehousing and project warehousing; The yard or project has a specific location and scope on the map. When the transport vehicle enters the scope of the project, the component entry is initially confirmed, and the fixed Bluetooth gateway is randomly triggered for secondary confirmation to complete the confirmation of the component entry.

10. The Bluetooth-based beam string steel support member monitoring method according to claim 9, characterized in that: Transport supervision: collect component information of the transport vehicle in real time through the on-board Bluetooth gateway, upload location information in real time through GPS positioning, and conduct real-time tracking during the transportation process; Project usage supervision: For each project, Bluetooth gateways are set up at intervals according to the size of the project. When the transport vehicle enters the scope of the project, that is, the components arrive at the project site, the Bluetooth gateway on the project begins to supervise the project components, and the component list is automatically entered into the project library; Inventory: Turn on the Bluetooth of the electronic mobile device, and the management personnel will inspect the components and supervise the inventory of the components in the yard or project. The mobile phone will directly record the inventory list and check and update the component data.

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