Integrated anti-interference concrete temperature measuring device

Abstract

The utility model relates to an integrated anti-interference concrete temperature measuring device, which comprises a laying frame, a temperature sensor and a wireless temperature acquisition terminal, the laying frame is used for mounting and fixing the temperature sensor and the wireless temperature acquisition terminal; a plurality of temperature sensors are arranged and are fixed on the laying frame; the wireless temperature acquisition terminal is fixed at the top end of the laying frame, and the wireless temperature acquisition terminal is connected with the temperature sensor and transmits concrete temperature data acquired by the temperature sensor to the monitoring platform; the wireless temperature acquisition terminal is composed of a temperature acquisition module, a wireless networking module, a wireless gateway and a secondary battery, the output end of the temperature sensor is connected with the input end of the temperature acquisition module, and the output end of the temperature acquisition module is connected with the input end of the wireless networking module; the output end of the wireless networking module is connected with the input end of the wireless gateway, and the output end of the wireless gateway is connected with the monitoring platform, so that data interaction is facilitated. The device can be plug-and-play during on-site construction, so that the interference influence of lines on the on-site construction is avoided while the workload of on-site line layout and access is eliminated, and the working efficiency of on-site construction is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete temperature measurement technology, and in particular to an integrated anti-interference concrete temperature measurement device. Background Technology

[0002] Mass concrete construction is very common in the construction industry, especially in the construction of large infrastructure projects such as dams, bridges, nuclear power plants, and high-rise building foundations. However, mass concrete faces a series of temperature-related challenges during pouring and hardening because the cement hydration reaction in concrete is an exothermic process that generates a large amount of heat. If this heat cannot be effectively dissipated, the internal temperature of the concrete will become too high, causing a temperature difference between the inside and outside, which may lead to cracks in the concrete structure and affect the overall performance and durability of the structure. To control the internal and external temperature difference in a timely manner, it is essential to monitor the real-time temperature of the mass concrete. For this purpose, the national standard GB / T 51028-2015, "Technical Specification for Temperature Measurement and Control of Mass Concrete," has been issued.

[0003] Currently, there are numerous temperature measurement devices for large-volume concrete on the market. However, these devices are mostly modular, requiring individual assembly on-site. The temperature sensors lack anti-interference features, relying entirely on the on-site installation personnel's awareness of interference prevention. Consequently, the level of interference resistance varies greatly, and some sensors even suffer damage during pouring due to insufficient safety protection. Because the sensors are often submerged in concrete by the time the damage is discovered, replacement is impossible, leading to temperature loss throughout the monitoring process. Furthermore, some devices are wired, with power supply and signal transmission all handled via wired connections. This makes installation and networking complex, resulting in a messy site appearance, restricted construction, interference, and significant delays in the construction schedule. Utility Model Content

[0004] To address the problems in the background technology, the purpose of this utility model is to provide an integrated anti-interference concrete temperature measuring device. This device can be used immediately during on-site construction, eliminating the workload of on-site wiring and connection while avoiding interference from wiring to on-site construction, thus greatly improving the efficiency of on-site construction.

[0005] The integrated anti-interference concrete temperature measuring device provided by this utility model includes a mounting frame, a temperature sensor and a wireless temperature acquisition terminal.

[0006] The mounting frame is used to install and fix temperature sensors and wireless temperature acquisition terminals. It provides safety protection for the temperature sensors (to prevent damage to the sensors during concrete pouring) while facilitating the installation and fixing of the entire device.

[0007] The temperature sensors are arranged in several quantities and fixed on the mounting frame;

[0008] The wireless temperature acquisition terminal is fixed on the top of the deployment frame. The wireless temperature acquisition terminal is connected to the temperature sensor and transmits the concrete temperature data collected by the temperature sensor to the monitoring platform.

[0009] The wireless temperature acquisition terminal consists of a temperature acquisition module, a wireless networking module, a wireless gateway, and a secondary battery. The output of the temperature sensor is connected to the input of the temperature acquisition module, the output of the temperature acquisition module is connected to the input of the wireless networking module, the output of the wireless networking module is connected to the input of the wireless gateway, and the output of the wireless gateway is connected to the monitoring platform for easy data interaction.

[0010] The secondary battery powers the entire device.

[0011] In a preferred embodiment, the temperature sensor is a platinum-based resistance temperature detector. This sensor operates based on the characteristic that the resistance of platinum changes with temperature. At 0°C, the resistance of the temperature sensor is defined as 100 ohms; as the temperature increases, the resistance also increases, and the relationship between temperature and resistance is almost linear.

[0012] When the wireless temperature acquisition terminal is working, it is powered by a secondary battery. It collects the temperature of the temperature sensor through the temperature acquisition module, and obtains accurate digital data through analog-to-digital conversion and microprocessor calibration inside the temperature acquisition module. Then, it uses a wireless networking module and a wireless gateway to transmit the data to the monitoring platform (or monitoring system) wirelessly.

[0013] In a preferred embodiment, the secondary battery is a lithium battery.

[0014] In a preferred embodiment, the mounting frame is a metal rod or a steel bar.

[0015] In a preferred embodiment, the outer surface of the temperature sensor is wrapped with a concrete layer to prevent the temperature sensor chip from contacting the metal (layout frame) and to avoid temperature measurement interference caused by the inconsistency in the specific heat of the metal and the concrete.

[0016] In a preferred embodiment, the temperature sensor is fixed to the mounting frame by a binding strap; the binding strap is preferably a fixing wire.

[0017] In a preferred embodiment, a sensor protective cover is provided at a designated location on the mounting frame, and the sensor protective cover is located above the temperature sensor.

[0018] The beneficial effects of this application are:

[0019] This utility model relates to an integrated anti-interference concrete temperature measuring device, which has great application prospects in large-volume concrete pouring construction. It can simplify the deployment of temperature measuring devices. The device adopts an integrated wireless design, is plug-and-play, convenient and quick to deploy, and automatically forms a wireless network within the local area. It can be flexibly arranged, eliminating the workload of on-site wiring and access, while avoiding the interference of complicated on-site wiring on construction, thus improving the efficiency of on-site construction. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of an integrated anti-interference concrete temperature measuring device is shown.

[0022] Figure 2 A schematic diagram of the integrated anti-interference concrete temperature measuring device is shown.

[0023] Figure 3 A schematic diagram of the wireless temperature acquisition terminal is shown.

[0024] Figure 4 A schematic diagram of the temperature sensor structure is shown.

[0025] In the diagram, 1-layout frame; 2-temperature sensor; 3-wireless temperature acquisition terminal; 301-temperature acquisition module; 302-wireless networking module; 303-wireless gateway; 304-secondary battery; 4-monitoring platform; 5-fixing wire; 6-sensor protective cover; 7-concrete layer. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] Example 1

[0028] Please see Figures 1-2 An integrated anti-interference concrete temperature measurement device includes a mounting frame 1, a temperature sensor 2, and a wireless temperature acquisition terminal 3.

[0029] The mounting frame 1 is used to install and fix the temperature sensor 2 and the wireless temperature acquisition terminal 3. While providing safety protection for the temperature sensor (preventing damage to the sensor by concrete during pouring), it also facilitates the installation and fixing of the entire device.

[0030] The number of temperature sensors 2 is several, and they are fixed on the mounting frame 1;

[0031] The wireless temperature acquisition terminal 3 is fixed on the top of the mounting frame 1. The wireless temperature acquisition terminal 3 is connected to the temperature sensor 2 and transmits the concrete temperature data collected by the temperature sensor to the monitoring platform 4.

[0032] The wireless temperature acquisition terminal 3 consists of a temperature acquisition module 301, a wireless networking module 302, a wireless gateway 303, and a secondary battery 304. The output of the temperature sensor is connected to the input of the temperature acquisition module, the output of the temperature acquisition module is connected to the input of the wireless networking module, the output of the wireless networking module is connected to the input of the wireless gateway, and the output of the wireless gateway is connected to the monitoring platform for data interaction. The secondary battery powers the entire device.

[0033] Temperature sensors detect temperature changes and convert them into electrical signals. After signal conditioning and analog-to-digital conversion, these signals become digital signals. A microprocessor then processes these digital signals using precise nonlinear calibration equations and transmits the temperature data to a monitoring system or computer via a communication interface, enabling automatic temperature monitoring and recording. In this device, a wireless networking module sends the data to a wireless gateway, which then transmits it to the monitoring platform (monitoring system) via mobile communication technologies (4G, 5G), Wi-Fi, etc.

[0034] The wireless networking module utilizes Chirp Spread Spectrum (CSS) modulation technology to linearly change the frequency of the signal within a certain time period to extend the signal bandwidth, thereby enabling reliable data transmission in complex wireless environments. By encoding the data into chirped signals that can propagate simultaneously on multiple frequencies, long-distance wireless communication under low power conditions is achieved.

[0035] The wireless gateway receives and demodulates signals from the wireless networking module and forwards them to the network server via 4G or Wi-Fi. It can also receive instructions from the server and transmit them to the terminal devices, thereby enabling data transmission and control of remote devices.

[0036] Temperature sensors directly sense changes in ambient temperature and convert them into corresponding changes in physical quantities. The resistance of a temperature sensor increases as the temperature rises.

[0037] To reduce the interference of resistance changes in the connecting wires on the measurement results, temperature sensors typically use a three-wire or four-wire connection. A three-wire connection can compensate for the interference from the wire resistance by measuring the voltage drop across the two wires, thereby improving measurement accuracy.

[0038] Since metals and concrete have different specific heats, temperature sensors are installed on reinforcing bars or metal rods of a certain strength. The difference in the objects they come into contact with during installation can cause interference in temperature measurement. In order to reduce this type of interference, the temperature sensor probe in this embodiment is completely covered with high-strength concrete and equipped with binding straps for easy and quick fixation, so that the temperature sensor probe does not come into direct contact with metal, thereby achieving the purpose of anti-interference.

[0039] The temperature acquisition module measures the resistance of the temperature sensor. After amplification and filtering by the module's internal signal conditioning circuitry to ensure the quality of the analog signal, the continuous analog signal is converted into a discrete digital signal by the module's internal analog-to-digital converter (ADC). The converted digital signal is then fed into the module's microprocessor for processing, following a specific equation to perform analog-to-digital conversion and calibrate the relationship between resistance (R) and temperature (T), thereby obtaining an accurate digital temperature value (the specific formula is as follows):

[0040] R(T) = R0 × (1 + A × T + B × T) 2 +C×T 3 )

[0041] In practical applications, for a temperature range from -200℃ to +850℃, it can be simplified to:

[0042] R(T)=R0×(1+α×T)

[0043] Here, R0 is the resistance value at 0°C (usually 100 ohms), and α is the temperature coefficient (approximately 0.00392 per degree); the resistance increases by approximately 0.385 ohms for every 1°C increase in temperature.

[0044] Data is transmitted from the temperature acquisition module's RS-485 communication interface to the wireless networking module's RS-485 communication interface. Upon receiving the data, the wireless networking module encodes it into a chirped signal. This modulated signal is then transmitted via an antenna to the wireless gateway. The wireless gateway receives the signal, demodulates it, and restores the original data. Even under weak signal conditions, Chirp Spread Spectrum (CSS) modulation technology can recover the data through its unique modulation method. The decoded data can be used by the local monitoring system or forwarded via the gateway to a designated platform for further analysis and processing using wireless technologies such as 4G or Wi-Fi.

[0045] Example 2

[0046] Please see Figure 3 The lithium battery, wireless networking module, wireless gateway, and temperature acquisition module of the wireless temperature acquisition terminal are integrated into a fully sealed waterproof control box measuring 280mm in length, 280mm in width, and 130mm in height. All wiring between modules is concentrated inside the control box, and the entire device forms a whole, completely encapsulated in the waterproof control box. All modules are powered by the battery pack inside the waterproof control box. Data is sent to the wireless gateway through the wireless networking module and then uploaded via mobile communication technology (4G, 5G) or WIFI. This means that the device requires no external cables except for the large-volume concrete temperature sensor connected on-site.

[0047] Each wireless temperature acquisition terminal supports measurement of 8 or 16 temperature sensors. For situations with a large number of temperature measurement points or where temperature sensors are not concentrated, the number of expansion devices can be increased.

[0048] Since a wireless gateway can exchange and demodulate data with multiple wireless networking modules simultaneously, it is not necessary to install a wireless gateway in the extended device.

[0049] Example 3

[0050] Please see Figure 2 , 4 Several temperature sensors 2 are installed and fixed on the mounting frame 1. The manufacturing process of the temperature sensors is as follows: the temperature sensor 2 probe is fixed in a special concrete mold, and the fixing wire 5 required for later fixing is placed. High-strength concrete is used for pouring, and the mold is demolded after final setting.

[0051] The wireless temperature acquisition terminal is fixed to the top of an integrated deployment frame. The integrated deployment frame has sensor protective covers 6 pre-welded to designated locations according to the concrete temperature measurement requirements, and anti-interference temperature sensor fixing wires 5 are used to secure the sensor under the protective covers, making the entire device a unified whole. This facilitates rapid on-site deployment, allowing for plug-and-play operation during construction. It eliminates the workload of on-site wiring and connection, avoids interference from wiring on-site construction, greatly improves on-site construction efficiency, and keeps the site clean and organized.

[0052] This utility model device is powered by a reusable lithium battery, and the data transmission adopts a wireless design, which can be flexibly deployed within the range of a wireless local area network. The structure adopts an integrated design, and the temperature sensor is designed to resist interference, enabling rapid deployment on site and plug-and-play functionality. The added anti-interference design raises the reliability of the device to a new level.

[0053] This innovative design completely eliminates the need for on-site wiring and power connection, significantly reducing pre-construction preparation work and effectively avoiding interference from traditional cables, thus greatly improving construction efficiency. Furthermore, after installation, the site environment is much cleaner and more organized compared to traditional wired temperature measurement devices, showcasing the advanced and standardized nature of modern engineering technology.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An integrated anti-interference concrete temperature measuring device, characterized in that, Includes deployment racks, temperature sensors, and wireless temperature acquisition terminals; The mounting frame is used to install and fix temperature sensors and wireless temperature acquisition terminals. The temperature sensors are arranged in several quantities and fixed on the mounting frame; The wireless temperature acquisition terminal is fixed on the top of the deployment frame. The wireless temperature acquisition terminal is connected to the temperature sensor and transmits the concrete temperature data collected by the temperature sensor to the monitoring platform. The wireless temperature acquisition terminal consists of a temperature acquisition module, a wireless networking module, a wireless gateway, and a secondary battery. The output of the temperature sensor is connected to the input of the temperature acquisition module, the output of the temperature acquisition module is connected to the input of the wireless networking module, the output of the wireless networking module is connected to the input of the wireless gateway, and the output of the wireless gateway is connected to the monitoring platform for easy data interaction. The secondary battery powers the entire device.

2. The integrated anti-interference concrete temperature measuring device according to claim 1, characterized in that, The temperature sensor is a platinum-based resistance temperature detector.

3. The integrated anti-interference concrete temperature measuring device according to claim 1, characterized in that, The secondary battery is a lithium battery.

4. The integrated anti-interference concrete temperature measuring device according to claim 1, characterized in that, The installation frame is a metal rod or steel bar.

5. The integrated anti-interference concrete temperature measuring device according to claim 1 or 4, characterized in that, The outer surface of the temperature sensor is covered with a layer of concrete.

6. The integrated anti-interference concrete temperature measuring device according to claim 1, characterized in that, The temperature sensor is fixed to the installation frame by strapping.

7. The integrated anti-interference concrete temperature measuring device according to claim 1, characterized in that, A sensor protective cover is installed at a designated location on the mounting frame, and the sensor protective cover is located above the temperature sensor.

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