High-frequency dynamic pressure acquisition remote transmission terminal and high-frequency pressure monitoring system formed by same

Abstract

The utility model provides a high-frequency dynamic pressure acquisition remote transmission terminal and a high-frequency pressure monitoring system formed by the same, and belongs to the technical field of sensors. The high-frequency dynamic pressure acquisition remote transmission terminal is provided with an integrated shell, is equipped with a sealed waterproof structure, and comprises a bottom plate, a battery pack, a PCB (Printed Circuit Board), an upper shell, an antenna, a waterproof joint and a pressure sensor. The high-frequency pressure monitoring system takes a high-frequency dynamic pressure acquisition and remote transmission terminal as a core, a high-frequency pressure sensor and a temperature sensor are used for acquiring data on a pipe wall, the data are remotely transmitted back to the monitoring system through the terminal, and the whole system is uniformly supplied with power by a solar power supply system. According to the utility model, the pressure sensor with high frequency response is arranged, so that tiny pressure change can be captured, the sampling frequency up to 1KHz is realized, and the accuracy and timeliness of data are guaranteed; meanwhile, data acquired at high frequency can be remotely transmitted to a monitoring system in real time, so that accidents are effectively prevented or potential loss is reduced; and various abnormal working conditions such as pipeline temperature, pressure sudden change and water hammer can be monitored in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors and relates to a high-frequency dynamic pressure acquisition remote transmission terminal and a high-frequency pressure monitoring system. Background Art

[0002] Existing pressure sensors are mainly used to monitor the changes in liquid or gas pressure in pipelines in real time, warn of abnormal conditions, improve safety, optimize system performance, and provide key data for maintenance and fault diagnosis. Pressure sensors emphasize sampling frequency and real-time performance. A higher sampling frequency can ensure accurate perception of transient pressure changes inside the pipeline, and the real-time performance of remote data transmission can ensure rapid identification and timely repair of abnormal accidents, ensuring the safe operation of water supply pipelines. In actual projects, pressure sensors often lose power due to battery consumption, resulting in excessively high maintenance costs. Currently, there is no data terminal equipment on the market that can simultaneously collect pressure frequencies above 1Khz, be battery-powered, and be remotely transmitted.

[0003] In view of the above situation, the utility model provides a high-frequency dynamic pressure acquisition and remote transmission terminal, which has an integrated design of data acquisition, microcontroller, wireless transmission and battery, and is connected to the pressure sensor installed on the pipe network through a waterproof interface and collects relevant physical quantities to realize water hammer monitoring, pipeline gas flow state analysis monitoring, pressure mutation monitoring and other functions. It can be expanded to connect to flow meters, water meters and other equipment in the pipe network well to realize the functions of data collection, storage and remote transmission, upper and lower limit alarms, and change alarms, and has low power consumption. Utility Model Content

[0004] The purpose of the utility model is to develop a high-frequency pressure detection station with a high-frequency dynamic pressure acquisition and remote transmission terminal as the core, through which the pipeline temperature, pressure mutation, water hammer, gas-containing gas state, flow type and other conditions can be monitored online in real time, and the station has the characteristics of high frequency, low power consumption, remote real-time monitoring and low production cost.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A high-frequency dynamic pressure collection remote transmission terminal, the high-frequency dynamic pressure collection remote transmission terminal has an integrated shell and is equipped with a sealed waterproof structure. The high-frequency dynamic pressure collection remote transmission terminal includes a bottom plate 4, a battery pack 6, a battery pack upper bracket 8, EVA foam 9, a PCB board 10, an upper shell 11, an antenna adapter 12, an antenna 13, a waterproof connector 14, and a pressure sensor 15.

[0007] Specific:

[0008] The bottom plate 4 provides a solid mounting base for the device, on which all internal components are mounted or fixed; the battery pack 6 is mounted on the bottom plate 4 to supply the power required for the device to operate; the battery pack upper bracket 8 is fixed on the top of the battery pack 6 to provide stability and protection for the battery pack 6; the EVA foam 9 is located above the battery pack upper bracket 8 to reduce shock and protect the internal components to prevent damage during the operation of the device; the PCB board 10 is mounted on the EVA foam 9 and is the electronic control center of the device, which contains circuits for processing data and controlling the operation of the device; the upper shell 11 covers all internal components. The upper part is combined with the bottom plate 4 to form a sealed and waterproof shell to protect the internal components from environmental influences; the antenna adapter 12 is connected to the outside of the upper shell 11 and is used to connect the antenna 13, which enables the device to transmit data remotely; the antenna 13 is located at the top of the entire device and is a protruding component used to receive and send signals to ensure that the device can communicate with the remote system; the waterproof connector 14 is a connector designed for waterproofing, used to ensure the sealing of external connection points; the pressure sensor 15 is externally connected to the outside of the device. It is a key component of the device and is responsible for monitoring pressure changes and sending data to the PCB board 10 for processing.

[0009] Furthermore, a sealing ring 5 is provided between the upper shell 11 and the bottom plate 4 to prevent water leakage.

[0010] A high-frequency pressure monitoring system, the high-frequency pressure monitoring system includes a solar power supply system 16, a high-frequency pressure acquisition terminal 17, a pole and a lightning protection device 18, a temperature sensor 19, and a high-frequency pressure sensor 20. The high-frequency pressure monitoring system is centered on a high-frequency dynamic pressure acquisition and remote transmission terminal 17, and uses high-frequency pressure sensors and temperature sensors to collect data on the pipe wall. The data is remotely transmitted back to the monitoring system by the terminal, and the entire system is powered by the solar power supply system 16. Specifically:

[0011] The solar power supply system 16 is located at the top of the pole and consists of a solar panel, which provides energy for the entire monitoring system and ensures the independent power supply and continuous working ability of the monitoring system; the high-frequency pressure acquisition terminal 17 is located at the upper middle end of the pole, close to the solar power supply system 16. This terminal is the core of the entire monitoring system and is responsible for receiving data from the pressure sensor and transmitting it remotely after processing; the pole and lightning protection device 18 is a vertical structure, one end of which is fixed on the base of the monitoring system and the other end is connected to the high-frequency pressure acquisition terminal 17 and the solar power supply system 16, through which these two components are supported and have the function of lightning protection to protect the equipment from lightning damage; the temperature sensor 19 is installed on the pipeline by patch, and is adsorbed on the valve body wall by magnet adsorption and fixation, which is used to monitor the temperature change of the pipeline; the high-frequency pressure sensor 20 is welded and installed on the pipeline to capture high-frequency pressure fluctuations and transmit the data to the acquisition terminal for processing.

[0012] Furthermore, the pressure collection point of the high-frequency pressure collection terminal 17 is set on the wall of the pipeline to be measured to realize the collection and transmission of the pipeline pressure. A pressure collection interface is reserved on the high-frequency dynamic pressure collection remote transmission terminal. The high-frequency pressure sensor 20 is connected to the high-frequency pressure collection terminal 17 through a connecting line.

[0013] The beneficial effects of the utility model are:

[0014] (1) The core advantage of the high-frequency dynamic pressure acquisition remote transmission terminal provided by the utility model lies in its remote transmission capability, which makes it particularly effective in monitoring the real-time status of the pipeline system. By being equipped with a high-frequency response pressure sensor, this terminal can capture subtle pressure changes and achieve a sampling frequency of up to 1KHz, ensuring the accuracy and timeliness of the data. At the same time, using the built-in 4G communication module, the terminal can remotely transmit the high-frequency collected data to the monitoring system in real time. This remote communication capability allows monitoring personnel to receive key monitoring data in a timely manner on their mobile phones or PCs, and respond quickly when an abnormality occurs in the pipeline system, thereby effectively preventing accidents or reducing potential losses.

[0015] (2) The high-frequency pressure monitoring system, which is composed of a high-frequency dynamic pressure acquisition and remote transmission terminal as the core, is based on sensors and wireless communication Internet of Things technology. It can monitor various abnormal working conditions such as pipeline temperature, pressure mutation, water hammer, etc. in real time, and promptly alarm and notify relevant personnel in the monitoring system. It can clearly locate the abnormal pipeline on the GIS map. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1These are the appearance renderings of the high-frequency dynamic pressure collection and remote transmission terminal (six views); among them, Figure (a) is the main view, Figure (b) is the left view, Figure (c) is the right view, Figure (d) is the rear view, Figure (e) is the top view, Figure (f) is the bottom view, and Figure (g) is the three-dimensional top view.

[0017] Figure 2 This is an exploded view of the high-frequency dynamic pressure acquisition remote transmission terminal.

[0018] Figure 3 It is a schematic diagram of the high-frequency pressure monitoring system.

[0019] Figure 4 This is the installation effect diagram of the high-frequency pressure monitoring system.

[0020] In the figure: 1 screw, 2 support foot, 3 friction pad, 4 bottom plate, 5 sealing ring, 6 battery pack, 7 screw, 8 battery pack upper bracket, 9 EVA foam, 10 PCB board, 11 upper shell, 12 antenna adapter, 13 antenna, 14 waterproof connector, 15 pressure sensor; 16 solar power supply system, 17 high-frequency pressure collection terminal, 18 pole and lightning protection device, 19 temperature sensor, 20 high-frequency pressure sensor. DETAILED DESCRIPTION

[0021] The core of this application is to provide a high-frequency dynamic pressure acquisition and remote transmission terminal, which can collect high-frequency pressure data and realize data remote transmission, and is used to monitor the pipeline status in real time, alarm the abnormal status of the pipeline, effectively detect pipeline water hammer, and has the pipeline gas flow state analysis and monitoring function. In order to make the purpose, technical solution and advantages of the embodiment of this application clearer, the technical solution of the utility model is further explained below in combination with the drawings and embodiments.

[0022] Figure 1 This is the appearance effect diagram of the high-frequency dynamic pressure acquisition remote transmission terminal. Its internal overall structure is as follows Figure 2As shown. Component 1 is a screw, 2 is a foot, 3 is a friction pad, 4 is a bottom plate, 5 is a sealing ring, 6 is a battery pack, 7 is a screw, 8 is a battery pack upper bracket, 9 is EVA foam, 10 is a PCB board, 11 is an upper shell, 12 is an antenna adapter, 13 is an antenna, 14 is a waterproof connector, and 15 is a pressure sensor. Specifically: the component 1 is an M4 hexagonal stainless steel screw, 2 is a fixed support foot 6mm*8.5mm, the friction pad 3 prevents the support foot 2 from rubbing, the bottom plate 4 as the back plate 146mm*248mm is made of aluminum alloy, formed by a mold, and painted to prevent corrosion, the battery pack 6 uses 7 19AhER34618 large-capacity batteries, fixed to the bottom plate 4 with a battery pack upper bracket 8, the sealing ring 5 is used between the upper cover and the bottom plate to prevent water leakage, and the protection level can reach IP68, 7 is a battery fixing screw, EVA foam 9 is installed on the inner side of the battery pack upper bracket to prevent the bracket from damaging the battery pack, and the PCB circuit board 10 is the core control part of the equipment, which contains the control circuit, acquisition circuit, storage circuit, and transmission circuit in one, and performs regular acquisition, storage, analysis and transmission of the pressure data of the pressure sensor 15. The upper shell of 146mm*145mm is made of aluminum alloy, formed by mold making, and painted to prevent corrosion. It is combined with the bottom plate 4 to form the appearance of the entire terminal. 12 and 13 are antenna components for data signal transmission. 14 waterproof connector is a stainless steel connector between the circuit board and the sensor to prevent water from entering the device.

[0023] In this embodiment, the device adopts an integrated structure, consisting of a cylindrical overall shell, a sealing and waterproof mechanism, a battery installation mechanism, a PCB board installation and fixing mechanism, a signal output, an input interface installation and fixing and sealing and waterproof mechanism, an antenna lead-out mechanism, etc. Sealing protection level: IP68, can support operation for no less than 30 days under 2 meters underwater conditions.

[0024] Figure 3 This is a schematic diagram of a high-frequency pressure monitoring system. The high-frequency pressure monitoring system is centered on a high-frequency dynamic pressure acquisition and remote transmission terminal. It uses a data acquisition module (high-frequency pressure sensor, temperature sensor) to collect data on the pipe wall. The data is transmitted from the terminal to the mobile phone APP or the monitoring system on the PC through the communication module. The entire system is powered by a power supply module (solar panel). The installation effect of the above high-frequency pressure monitoring system is as follows: Figure 4Component 16 is a solar power supply system, 17 is a device terminal box, 18 is a pole and a lightning protection device, 19 is a temperature sensor, and 20 is a high-frequency pressure sensor. Specifically: the solar power supply system 16 is a 60W solar panel (350mm*400mm) used to continuously power the collection system. It is installed on the top of the pole in a clamping manner, facing due south and west. The equipment terminal box 17 is an integrated box structure (500mm*700mm*350mm), fixedly installed on the pole, with built-in high-frequency data collector, solar control and other components. The pole and lightning protection device 18 adopts a hot-dip galvanized steel pipe with a diameter of 169mm, a wall thickness of 4mm, and a height of 2.5m, and is painted to prevent corrosion. The lightning protection grounding adopts a 16 square special grounding copper wire, which is connected to the underground lightning protection device; the temperature sensor 19 is a patch design, which is magnetically adsorbed on the pipeline wall to monitor temperature changes; the high-frequency pressure sensor 20 is installed on the pipeline by welding, and has a dynamic response frequency of not less than 1KHz, which is used to capture high-frequency pressure fluctuations and transmit data to the collection terminal.

[0025] The pressure sensor adopts a pressure sensor with a dynamic response of not less than 1KHZ. The high-frequency dynamic pressure sensor can provide stable performance in a wide temperature range, has good linearity, high natural frequency, extremely short rise time and a wide and excellent response frequency band. The special gold wire lead and special packaging technology are used to solve the problem of gold wire pressure welding, realize the flush pressure-bearing sensor packaging technology, completely eliminate the tube cavity effect, and measure some dynamic pressure waveforms with high change frequency and fast and steep pressure waveform rise without distortion. The amplitude and effective value, and by changing the chip manufacturing process, the problem of strong internal light interference in the chemical explosion test is solved. During construction, the high-frequency pressure sensor is welded and installed on the pipeline, and the DN50 external thread base is welded and the DN50 ball valve is installed, the pipeline is opened, and the DN50 is transferred to the pressure sensor. This high-frequency pressure sensor can support high-frequency dynamic pressure acquisition, and the acquisition frequency is not less than 1khz.

[0026] The temperature sensor is a patch type sensor. The temperature sensor is patch mounted on the pipeline and is adsorbed on the valve body wall by a magnet adsorption and fixation method.

[0027] The external digital pressure acquisition module is an optional function. The pressure acquisition point is set on the wall of the pipeline to be tested to realize the collection and transmission of pipeline pressure. A pressure acquisition interface is reserved on the high-frequency dynamic pressure acquisition remote transmission terminal. The connection line between the pressure sensor and the remote transmission terminal adopts the hidden line method.

[0028] The data acquisition module adopts a PCB board, on which a CPU information acquisition module is installed, which is connected to the above-mentioned sensor and mainly completes the collection of high-frequency pressure data, instantaneous pressure data, valve body temperature data, and culvert water level data.

[0029] The data storage module uses Winbond's W25Q32JVS for data storage, with a capacity of 4M, to achieve storage and preservation of the above collected data. If the pressure data is saved once every 5 minutes, or the flow data is saved once every 15 minutes, it can be stored for more than 2 years.

[0030] The input interface includes 1 RS485 interface, which can be connected to flow meters, liquid level meters, etc. with RS485 functions. The RS485 data transmission rate is: 1200, 2400, 4800, 9600bps (optional); 2 analog inputs, which can be connected to 4-20MA / 0-5V standard analog inputs, such as pressure sensors, water level sensors, water quality sensors, etc. The acquisition frequency can reach 1Khz, and Bluetooth can configure the acquisition frequency; 4 switch inputs, such as the pulse signal of the water meter, the switch can be connected to the pulse signal and the switch signal.

[0031] The wireless communication module adopts the EC200N-CN wireless communication processing module and is controlled by the CPU to realize information communication; a Bluetooth wireless communication module is installed on the PCB for parameter setting and reading of historical data; the parameter function can be configured using the mobile phone Bluetooth.

[0032] The power module can be powered by a disposable lithium battery. Seven 19AhER34618 batteries are connected in parallel to power the control circuit board (collecting 15 minutes each time and transmitting remotely for 1 hour). The battery can supply power for more than 4 years. If the pressure is collected at a high frequency (collecting 5 seconds of pressure a day and transmitting remotely once), the battery can supply power for more than 3 years. It can also be powered by the mains, using a 220V to 7.2V, 3.6V regulated power supply. In addition, the external solar panel can provide unified power supply for the equipment. When powered by solar energy, it can report the battery voltage value and issue a low voltage alarm.

[0033] The above-described embodiments merely express the implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A high-frequency dynamic pressure acquisition remote transmission terminal, characterized in that: The high-frequency dynamic pressure collection remote transmission terminal comprises a bottom plate (4), a battery pack (6), EVA foam (9), a PCB board (10), an upper shell (11), an antenna adapter (12), an antenna (13), a waterproof connector (14), and a pressure sensor (15); specifically: the bottom plate (4) is a mounting base; the battery pack (6) is mounted on the bottom plate (4) through a battery pack upper bracket (8); the EVA foam (9) is located above the battery pack upper bracket (8) for shock absorption and protection of internal components; the PCB board (10) is mounted on the EVA foam (9). , which is the electronic control center of the device; the upper shell (11) is combined with the bottom plate (4) to form a sealed and waterproof shell to protect the internal components from environmental influences; the antenna adapter (12) is connected to the outside of the upper shell (11) and is used to connect the antenna (13) so that the device can transmit data remotely; the antenna (13) is located at the top to ensure that the device can communicate with the remote system; the waterproof connector (14) is used to ensure the sealing of the external connection point; the pressure sensor (15) is externally connected to the outside of the device to monitor pressure changes and send data to the PCB board (10) for processing.

2. According to claim 1, a high-frequency dynamic pressure acquisition remote transmission terminal is characterized in that: A sealing ring (5) is provided between the upper shell (11) and the bottom plate (4) to prevent water leakage.

3. A high-frequency pressure monitoring system, characterized in that: The high-frequency pressure monitoring system includes a solar power supply system (16), a high-frequency dynamic pressure acquisition and remote transmission terminal (17) as described in claim 1 or 2, a pole and a lightning protection device (18), a temperature sensor (19), and a high-frequency pressure sensor (20); the high-frequency pressure monitoring system is centered on the high-frequency dynamic pressure acquisition and remote transmission terminal (17), and uses high-frequency pressure sensors and temperature sensors to collect data on the pipe wall. The data is transmitted back to the monitoring system by the terminal, and the entire system is powered by the solar power supply system (16).

4. A high frequency pressure monitoring system according to claim 3, characterized in that: Specifically: the solar power supply system (16) is located at the top of the pole to provide energy for the entire monitoring system; the high-frequency dynamic pressure acquisition remote transmission terminal (17) is located at the upper middle end of the pole to receive data from the pressure sensor and transmit it remotely after processing; the pole and lightning protection device (18) is a vertical structure, one end of which is fixed on the base of the monitoring system and the other end is connected to the high-frequency dynamic pressure acquisition remote transmission terminal (17) and the solar power supply system (16), through which these two components are supported and have a lightning protection function; the temperature sensor (19) is installed on the pipeline and is adsorbed on the valve body wall by a magnet adsorption and fixation method to monitor the temperature change of the pipeline; the high-frequency pressure sensor (20) is installed on the pipeline, and the high-frequency pressure sensor (20) is connected to the high-frequency dynamic pressure acquisition remote transmission terminal (17) through a connecting line to capture high-frequency pressure fluctuations and transmit the data to the acquisition terminal for processing.

5. A high frequency pressure monitoring system according to claim 4, characterized in that: The pressure collection point of the high-frequency dynamic pressure collection remote transmission terminal (17) is arranged on the wall of the pipeline to be tested, so as to realize the collection and transmission of the pipeline pressure; a pressure collection interface is reserved on the high-frequency dynamic pressure collection remote transmission terminal (17).

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