Urban lifeline pipe network monitoring system

Abstract

The utility model relates to an urban lifeline pipe network monitoring system, which comprises a main control module, a power supply module, a communication module, a cloud server rear end, and a multi-path output and measurement module (comprising an analog quantity module, a relay module, an analog quantity measurement module, an on-off input module, a PT100 acquisition module, a pressure / liquid level measurement module and a flow measurement module) connected with the main control module. The power supply module adopts wide-voltage direct current power supply, and the communication module adopts a 4G CAT1 module. All the modules are respectively connected with and control a pipeline valve, collect 4-20 mA signals, monitor states of the valve, a well lid and a control box, and collect parameters such as temperature, pressure, liquid level and flow in a pipeline and a well. The system can comprehensively sense the state of a pipe network, local / remote intelligent control is achieved through 4G CAT1, and response is rapid; the wide-voltage and modular design adapts to a complex environment, and the operation and maintenance cost is reduced; a low-power-consumption chip prolongs the endurance, and the reliability is improved through local storage and multi-stage alarm.

Description

Technical Field

[0001] This utility model relates to the field of pipeline monitoring technology, specifically to a monitoring system for urban lifeline pipeline networks. Background Technology

[0002] The urban pipeline monitoring system is an intelligent management system for real-time monitoring of the operational status of urban water supply and heating pipelines. By deploying various sensors and communication networks, the system enables real-time acquisition, transmission, analysis, and early warning of key parameters such as pipeline pressure, temperature, liquid level, and flow rate, providing data support for safe pipeline operation, rapid fault location, and scientific scheduling.

[0003] Existing pipeline monitoring systems generally consist of sensors, data acquisition units, communication modules, main control equipment, and power supply modules. The communication component typically uses GPRS modules, which rely on AT command sets for data transmission, resulting in significant technical limitations: Firstly, due to the inherent limitations of GPRS technology (actual speeds are typically only 30-60kbps) and high latency (300-1000ms), the system struggles to achieve real-time uploading and interaction of critical data, leading to slow response and handling of sudden pipeline failures. Secondly, the overall energy consumption of the system is high. Current mainstream power supply solutions combine solar energy and batteries, but the high energy consumption significantly shortens battery life, especially in cloudy or rainy weather or environments with insufficient sunlight, where solar panel power generation drops sharply, easily causing monitoring equipment to stop working due to power outages, severely impacting the continuity and reliability of system monitoring. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical problems and provide a monitoring system for urban lifeline pipeline networks.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a city lifeline pipeline network monitoring system, comprising a main control module, a power supply module, a communication module, and a cloud server backend, further including a 2-channel analog output module, a 4-channel relay output module, an 8-channel analog measurement module, an 8-channel switch input signal module, a 2-channel PT100 acquisition module, a pipeline pressure / pipeline well level measurement module, and a pipeline water flow measurement module connected to the main control module; the power supply module is connected to the main control module and adopts a wide-voltage DC power supply scheme; the cloud server backend communicates with the main control module through a communication module; the communication module adopts 4G. The system includes a CAT1 network communication module; a 2-channel analog output module connected to and controlling the opening and closing of pipeline valves controlled by analog signals; a 4-channel relay output module connected to and controlling the opening and closing of pipeline valves controlled by digital signals; an 8-channel analog measurement module connected to 8 4-20mA signal devices for acquiring 4-20mA signals; an 8-channel digital input module connected to pipeline valve switch status sensors, pipeline manhole cover switch status sensors, and control box switch status sensors for monitoring the switch status of pipeline valves, pipeline manhole covers, and control boxes; a 2-channel PT100 acquisition module connected to pipeline temperature sensors and pipeline manhole temperature sensors for monitoring pipeline and pipeline manhole temperatures; a pipeline pressure / pipeline manhole level measurement module connected to pipeline pressure sensors and pipeline manhole level sensors; and a pipeline water flow measurement module connected to an electromagnetic flowmeter.

[0006] Furthermore, the main control module includes a main control MCU and a data storage chip, which are electrically connected. The main control MCU adopts an STC8H series microcontroller. The power supply module, communication module, 2-channel analog output module, 8-channel analog measurement module, 4-channel relay output module, 8-channel switch input signal module, 2-channel PT100 acquisition module, pipeline pressure / pipeline well liquid level measurement module, and pipeline water flow measurement circuit are all connected to the main control MCU.

[0007] Furthermore, the power module includes a solar panel, a battery, a solar cell charging circuit, and a power supply circuit. The solar panel and the battery are connected through the solar cell charging circuit. The battery is a lead-acid battery, and the power supply circuit is a DC-DC conversion circuit.

[0008] Furthermore, the solar cell charging circuit is a CN3768, 12V / 4A lead-acid battery charging management integrated circuit.

[0009] Furthermore, the 2-channel PT100 acquisition module includes a pipeline PT100 temperature acquisition circuit and a pipeline well internal ambient temperature PT100 temperature acquisition circuit. Both adopt a constant current source + CS1237 ADC chip acquisition method. A pipeline temperature sensor is connected to the pipeline PT100 temperature acquisition circuit, and a pipeline well temperature sensor is connected to the pipeline well internal ambient temperature PT100 temperature acquisition circuit.

[0010] Furthermore, the pipeline pressure / pipeline well level measurement module communicates with the main control MCU via RS485, and the pipeline water flow measurement module communicates with the main control MCU via RS485.

[0011] Furthermore, the system also includes a buzzer alarm module, which is connected to the main control MCU.

[0012] Furthermore, a communication level conversion circuit is provided between the 4G CAT1 network communication module and the main control MCU.

[0013] Furthermore, the 4-channel relay output module includes a ULN2002D chip and four relays, and the main control MCU controls the operation of the four relays through the ULN2002D chip.

[0014] Furthermore, the power module also includes a reference voltage source circuit.

[0015] The beneficial effects of this utility model are: 1. Comprehensive monitoring: It covers multiple dimensions of parameters such as pipeline pressure, flow rate, temperature, liquid level, and equipment status (valves, manhole covers, etc.) to achieve "full status perception".

[0016] 2. Intelligent control: Through 4G CAT1 communication, it supports local or remote control of various valves, with fast information transmission speed, realizing real-time data transmission and rapid response to anomalies.

[0017] 3. High adaptability: Wide voltage power supply, 4G CAT1 communication, RS485 interface and other designs are suitable for complex urban environments (such as remote areas and electromagnetic interference scenarios). The modular design shortens installation time and maintenance costs.

[0018] 4. Low power consumption: The system's main control MCU and various module circuits all use low power chips, which effectively reduces system power consumption, extends battery life, and avoids equipment power outages caused by insufficient power in rainy weather.

[0019] 5. High reliability: Local data storage avoids data loss, and a multi-level alarm mechanism improves the speed of anomaly response. Attached Figure Description

[0020] Figure 1 It is a power supply circuit;

[0021] Figure 2 It is a solar cell charging circuit;

[0022] Figure 3 It is the main control MCU chip;

[0023] Figure 4 It is a PT100 temperature acquisition circuit for pipeline temperature;

[0024] Figure 5 It is a PT100 temperature measurement circuit for the internal ambient temperature of the pipe well;

[0025] Figure 6 It is a pipeline pressure / pipeline well level measurement circuit;

[0026] Figure 7 It is a circuit for measuring the flow rate of water inside the pipe;

[0027] Figure 8 It is a buzzer alarm circuit;

[0028] Figure 9 It is a reference voltage source circuit;

[0029] Figure 10 It is a 4G cat1 network communication module;

[0030] Figure 11 It is a communication level conversion circuit;

[0031] Figure 12 It is a data storage chip;

[0032] Figure 13 It is a 2-channel analog output circuit;

[0033] Figure 14 It is an 8-channel AI analog measurement circuit;

[0034] Figure 15 It is an 8-channel analog-to-digital signal acquisition ADC chip;

[0035] Figure 16 It is a 4-channel relay output circuit;

[0036] Figure 17 It contains 8-channel DI switch input signals;

[0037] Figure 18 This is a system block diagram of the urban lifeline pipeline network monitoring system. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0039] Embodiments of this utility model: such as Figure 1-18 As shown, an urban lifeline pipeline network monitoring system includes:

[0040] Main control module (main control MCU + data storage chip): corresponding to the attached... Figure 3 The main control MCU and auxiliary components shown Figure 12 The data storage chip shown is the STC8H3K64S4-45I-LQFP32, a microcontroller from the STC8H series, designed for strong anti-interference, ultra-low cost, ultra-high speed, and low power consumption. This MCU operates at 1.9V to 5.5V and has an operating temperature range of -40℃ to 85℃. It features four high-speed serial ports (Serial Port 1, Serial Port 2, Serial Port 3, Serial Port 4), five 16-bit timers (Timer 0, Timer 1, Timer 2, Timer 3, Timer 4), eight channels / two groups of PWM, and an ultra-high-speed ADC (supporting 12-bit high-precision 12-channel analog-to-digital conversion). The data storage chip is primarily used to record important product parameters. It uses the K24C02 chip. This chip operates at 1.8-5.5V with a standby current of 1uA. It retains data for 100 years and has a write cycle life of 1,000,000 times, meeting product design requirements. Data lines SDA and SCL are connected to the main control MCU via 4.7K pull-up resistors.

[0041] Power module (solar panel + battery + solar cell charging circuit + power circuit): corresponding to the attached... Figure 2 The solar cell charging circuit shown, along with... Figure 1The power supply circuit shown employs a DC-to-DC converter—the XL1509-5.0E chip—to step down the voltage for the device, converting DC 6-24V to 5V. An AMS1117-3.3V LDO chip converts the 5V power to 3.3V to power the main control MCU and core components. A CJ7812 chip steps down the 12-24V power supply to +12V to power the 0-10V signal output chip. A CN3768, a 12V / 4A lead-acid battery charging management IC, is used to charge the lead-acid battery. The CN3768 is a PWM step-down mode IC that automatically manages the charging of 12V lead-acid batteries, offering advantages such as small package size, fewer external components, and ease of use. The CN3768 features trickle, constant current, overcharge, and float charge modes, making it ideal for charging 12V lead-acid batteries. Typical charging voltages in overcharge and float charge modes are 14.8V and 13.55V, respectively.

[0042] It is worth noting that, attached Figure 2 The output electrolytic capacitor C6 must be 1000uF 25V or 35V. The 10uF specified in the CN3768 manual is not acceptable, as the measured output power supply ripple is extremely large.

[0043] Communication module: corresponding to the attached Figure 10 The 4G CAT1 network communication module shown is a WH-LTE-7S14GCAT1 network communication module, powered by a 5V power supply. The MCU is controlled by a RESET connection to reset the 4G module. External LEDs are connected to the LINKA and LINKB pins to indicate the module's current connection status. An external level conversion circuit is connected to the UTXD1 and URXD1 serial port pins to convert the serial port level to a 3.3V TTL level chip, which is then connected to the microcontroller pins to enable communication between the microcontroller and the 4G communication module. A 220uF / 10V aluminum capacitor and a 0.1uF surface-mount capacitor are used for voltage regulation and filtering at the power supply end. An external LED is connected to the Work pin to indicate the 4G network module's network signal connection status.

[0044] The cloud server backend (mobile APP / web interface) connects to the main control MCU via a communication module.

[0045] 2-channel analog output module: (See attached image) Figure 13 The circuit shown is a two-channel analog output circuit used to output 0-10V voltage signals to control the switching of pipeline valves controlled by analog signals. This solution uses the GP8403 chip, which linearly converts the voltage to 0-5V or 0-10V through an I2C interface for dual analog voltage output.

[0046] 4-channel relay output module: (See attached) Figure 16The circuit shown is a 4-channel relay output circuit used for switching pipeline valves controlled by analog signals. The ULN2003 is a monolithic integrated high-voltage, high-current Darlington transistor array, containing seven independent Darlington transistors driving a single channel. The circuit includes clamping diodes for driving inductive loads such as relays and stepper motors. Parallel connection of the Darlington transistors achieves higher output current capability. This circuit can be widely used in relay driving, lighting driving, LED display driving, stepper motor driving, and logic buffers. Each Darlington transistor in the ULN2003 is connected in series with a 2.7K base resistor, allowing direct connection to TTL / CMOS circuits at a 5V operating voltage, and direct processing of data handled by standard logic buffers. K1, K2, K3, and K4 are relays connected to the Bx pin of the ULN2002D chip and then connected to the main control MCU via the Cx pin, enabling the main control MCU to control the relay operation through the ULN2002D chip.

[0047] 8-channel analog measurement module: corresponding attachment Figure 14 The 8-channel AI analog measurement circuit shown + attached Figure 15 The illustrated 8-channel analog-to-digital (ADC) chip is used to acquire 4-20mA signals. The 8-channel analog measurement circuit connects to 8 4-20mA signal devices. The 8-channel AI analog measurement circuit uses a TP5551-TR operational amplifier chip and, through a signal front-end matching resistor, converts the differential signal (4-20mA) to a 0-3.3V voltage signal for acquisition by a dedicated ADC pin. This dedicated ADC chip enables the acquisition of external 4-20mA signals. The circuit achieves a 1:1 output. To prevent external interference signals or high-voltage signals from being directly connected to the ADC chip pins without processing, thus avoiding ADC chip failure, a differential input and follower circuit is added to provide pre-stage protection and conversion at the signal sampling end.

[0048] 8-channel digital input signal module: corresponding to the attached... Figure 17The diagram shows 8-channel DI switch input signals. This 8-channel switch input signal module is connected to a pipeline valve switch status sensor, a pipeline manhole cover switch status sensor, and a control box switch status sensor, used to monitor the switch status of pipeline valves, pipeline manhole covers, and control boxes. Devices U6, U7, U9, U10, U12, U13, U14, and U15 are optocouplers. A 10K resistor and a light-emitting diode are connected in series on pin 1 of the optocoupler. Pins 2 of optocouplers U6, U7, U9, and U10 are connected together as a 1M common terminal, and pins 2 of optocouplers U12, U13, U14, and U15 are connected together as a 2M common terminal. When a 24V switch signal is transmitted from pin I0.x, the signal is isolated into a 3.3V signal by the optocoupler and connected to the main control MCU pin to provide the microcontroller with external signal monitoring capabilities.

[0049] 2-channel PT100 acquisition module: corresponding to the attached Figure 4 The pipe temperature is shown by the PT100 temperature acquisition circuit + attached. Figure 5 The circuit shown illustrates the PT100 temperature measurement circuit for the internal ambient temperature of the pipe well. It connects to both a pipe temperature sensor and a pipe well temperature sensor to monitor the pipe and well temperatures. A constant current source + CS1237 ADC chip acquisition scheme is used to acquire the PT100 temperature signal. An MCP6002 rail operational amplifier chip + NPN transistor provides a precise 1mA constant current source to power the PT100 sensor. The CS1237 chip acquires the voltage changes between the PT100 sensors and converts the voltage transformation into a resistance transformation to complete the temperature acquisition. The CS1237 is a high-precision, low-power analog-to-digital converter chip with one differential input channel. It integrates a temperature sensor and a high-precision oscillator. The CS1237 is a 24-bit lossless ADC with an accuracy of 20 bits (5V) / 19.5 bits (3.3V) at PGA=128. The CS1237's PGA options are 1, 2, 64, and 128, with a default of 128x differential signal amplification.

[0050] Pipeline pressure / pipeline well level measurement module: corresponding to the attached... Figure 6 The pipeline pressure / well level measurement circuit shown connects to a pipeline pressure sensor and a well level sensor to monitor pipeline pressure and well level. This circuit uses the SP3485 chip. It operates on a low-voltage +3.3V power supply, is a low-power half-duplex RS-485 transceiver, and has a data rate of 10Mbps.

[0051] Pipeline water flow measurement module: corresponding to the attached Figure 7The circuit shown is for measuring the flow rate of water inside a pipe. It is connected to an electromagnetic flow meter and used to monitor the flow rate within the pipe. This circuit uses the SP3485 chip. It operates on a low voltage +3.3V power supply, is a low-power half-duplex RS-485 transceiver, and has a data rate of 10Mbps.

[0052] The power supply module, communication module, 2-channel analog output module, 8-channel analog measurement module, 4-channel relay output module, 8-channel digital input signal module, 2-channel PT100 acquisition module, pipeline pressure / pipeline well level measurement module, and pipeline water flow measurement circuit are all connected to the main control MCU.

[0053] The system also includes a buzzer alarm module, corresponding to the attached... Figure 8 The buzzer alarm circuit shown has an FMQ1 connector for connecting to the main controller MCU, which controls the buzzer alarm signal via a transistor.

[0054] The 4G CAT1 network communication module and the main control MCU are equipped with a communication level conversion circuit, corresponding to the attached... Figure 11 The communication level conversion circuit shown uses two S8050 transistors to convert the 3.0V serial port level signal of the 4G module to a 3.3V serial port level signal, which is used to enable normal communication between the microcontroller and the 4G module.

[0055] It is worth noting that the power module also includes the following: Figure 9 The reference voltage source circuit shown uses the REF5025 voltage reference chip to provide a high-precision voltage signal to the system. It is used to provide a reference voltage for the CS1237 chip in the PT100 temperature acquisition circuit for pipeline temperature and the PT100 temperature measurement circuit for the internal ambient temperature of the pipeline well. The REF5025 has a voltage of 2.5V, 3μVpp / V noise, and 3ppm / ℃ temperature drift.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0058] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A city lifeline pipeline network monitoring system, comprising a main control module, a power supply module, a communication module, and a cloud server backend, wherein the power supply module is connected to the main control module, and the cloud server backend communicates with the main control module through the communication module, characterized in that: It also includes a 2-channel analog output module, a 4-channel relay output module, an 8-channel analog measurement module, an 8-channel digital input signal module, a 2-channel PT100 acquisition module, a pipeline pressure / well level measurement module, and a pipeline water flow measurement module connected to the main control module; the power supply module adopts a wide-voltage DC power supply scheme; the communication module adopts a 4G CAT1 network communication module; the 2-channel analog output module connects to the pipeline valves on the pipeline network controlled by analog signals and controls the opening and closing of the pipeline valves; the 4-channel relay output module connects to the pipeline valves on the pipeline network controlled by digital signals and controls the opening and closing of the pipeline valves; the 8-channel analog measurement module connects to the main control module; the 4-channel relay output module connects to the pipeline valves on the pipeline network controlled by digital signals and controls the opening and closing of the pipeline valves; the 8-channel analog measurement module connects to the main control module; the 4-channel relay output module connects to the main control module; the 8-channel relay output ... The quantity module is connected to eight 4-20mA signal devices for acquiring 4-20mA signals; the eight-channel switch input signal module is connected to pipeline valve switch status sensors, pipeline manhole cover switch status sensors, and control box switch status sensors for monitoring the switch status of pipeline valves, pipeline manhole covers, and control boxes on the pipeline network; the two-channel PT100 acquisition module is connected to pipeline temperature sensors and pipeline manhole temperature sensors for monitoring pipeline temperature and pipeline manhole temperature; the pipeline pressure / pipeline manhole level measurement module is connected to pipeline pressure sensors and pipeline manhole level sensors; and the pipeline water flow measurement module is connected to an electromagnetic flowmeter.

2. The urban lifeline pipeline network monitoring system according to claim 1, characterized in that: The main control module includes a main control MCU and a data storage chip, which are connected in circuit. The main control MCU adopts an STC8H series microcontroller. The power supply module, communication module, 2-channel analog output module, 8-channel analog measurement module, 4-channel relay output module, 8-channel switch input signal module, 2-channel PT100 acquisition module, pipeline pressure / pipeline well liquid level measurement module and pipeline water flow measurement circuit are all connected to the main control MCU.

3. The urban lifeline pipeline network monitoring system according to claim 2, characterized in that: The power module includes a solar panel, a battery, a solar cell charging circuit, and a power supply circuit. The solar panel and the battery are connected through the solar cell charging circuit. The battery is a lead-acid battery, and the power supply circuit is a DC-DC converter circuit.

4. The urban lifeline pipeline network monitoring system according to claim 3, characterized in that: The solar cell charging circuit is a CN3768, 12V / 4A lead-acid battery charging management integrated circuit.

5. A city lifeline pipeline network monitoring system according to claim 2, characterized in that: The 2-channel PT100 acquisition module includes a pipeline PT100 temperature acquisition circuit and a pipeline well internal ambient temperature PT100 temperature acquisition circuit. Both use a constant current source + CS1237 ADC chip acquisition method. A pipeline temperature sensor is connected to the pipeline PT100 temperature acquisition circuit, and a pipeline well temperature sensor is connected to the pipeline well internal ambient temperature PT100 temperature acquisition circuit.

6. The urban lifeline pipeline network monitoring system according to claim 2, characterized in that: The pipeline pressure / well level measurement module communicates with the main control MCU via RS485, and the pipeline water flow measurement module communicates with the main control MCU via RS485.

7. A city lifeline pipeline network monitoring system according to claim 2, characterized in that: The system also includes a buzzer alarm module, which is connected to the main control MCU.

8. A city lifeline pipeline network monitoring system according to claim 2, characterized in that: The 4G CAT1 network communication module is equipped with a communication level conversion circuit between itself and the main control MCU.

9. A city lifeline pipeline network monitoring system according to claim 2, characterized in that: The 4-channel relay output module includes a ULN2002D chip and four relays. The main control MCU controls the operation of the four relays through the ULN2002D chip.

10. A city lifeline pipeline network monitoring system according to claim 2, characterized in that: The power module also includes a reference voltage source circuit.

Images