A subgrade spraying maintenance system

Abstract

This utility model relates to a roadbed spraying maintenance system, including a monitoring and control system. The monitoring and control system includes a waterproof temperature and humidity sensor, a rainfall sensor, a 485 communication module, a DWIN screen, a 4G module, a backend server, a main control module, a solenoid valve output module for controlling peripheral operating components, and a power supply module. Environmental data collected by the waterproof temperature and humidity sensor and the rainfall sensor are uploaded to the backend server via the 4G module. The backend server sends a spraying plan to the main control module via the 4G module. The main control module receives the task scheduling of the spraying plan from the backend server and controls the peripheral operating components to perform spraying. This utility model can achieve planned spraying and can control the spraying path and spraying time in real time according to the specific site conditions, enhancing the operability and flexibility of the equipment.

Description

Technical Field

[0001] This utility model belongs to the field of highway maintenance technology, specifically relating to a roadbed spraying maintenance system. Background Technology

[0002] During highway construction, after concrete pouring, the concrete pavement needs to be sprayed with water regularly to prevent excessive evaporation and dehydration, which can lead to cracking and affect pavement quality. Early roadbed construction and maintenance were typically done manually using simple tools and carts. With the development of machinery, roadbed spraying equipment capable of timed water spraying has emerged. However, because it only sprays water according to set time intervals, the flexibility of water spraying maintenance is poor. In case of rain, the spraying system needs to be manually shut off to avoid wasting water, which is inconvenient. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a roadbed spraying maintenance system.

[0004] The technical solution of this utility model is as follows:

[0005] A roadbed spraying maintenance system includes a monitoring and control system. The monitoring and control system includes a waterproof temperature and humidity sensor for collecting temperature and humidity data of the cement surface, a rain sensor for acquiring rainfall data, a 485 communication module, a DWIN screen for human interaction, a 4G module, a backend server for bidirectional communication with the 4G module, a main control module, a solenoid valve output module for controlling peripheral operating components, and a power supply module for supplying power to the components. The waterproof temperature and humidity sensor, rain sensor, 485 communication module, DWIN screen, 4G module, power supply module, and solenoid valve output module are respectively connected to the main control module.

[0006] The environmental data collected by the waterproof temperature and humidity sensor and the rain sensor are uploaded to the back-end server via the 4G module. The back-end server controls the solenoid valve module to spray water via the 4G module.

[0007] Furthermore, the roadbed spraying maintenance system also includes a soil temperature and humidity sensor for collecting soil temperature and humidity data, which is uploaded to the backend server via a 4G module.

[0008] Furthermore, the solenoid valve output module includes one main valve control circuit and twelve spray valve control circuits.

[0009] Furthermore, the 485 communication module includes at least two 485 communication circuits, at least one of which is connected to a 485 bus extender.

[0010] Furthermore, the roadbed spraying maintenance system also includes a key input module connected to the main control module, which is used to set the 485 address.

[0011] Furthermore, the roadbed spraying maintenance system also includes a 433 wireless module that is connected to the main control module, and the 433 wireless module is equipped with a remote controller.

[0012] Furthermore, the power supply module includes an AC input module for connecting to external AC power, a rectifier and filter module connected to the AC input module for rectifying the external AC power, a 12V step-down module connected to the rectifier and filter module, and a 3.3V step-down module and a 3.8V step-down module connected to the 12V step-down module. The 12V step-down module supplies power to the DWIN screen, the 3.3V step-down module supplies power to the main control module, the rain sensor, the solenoid valve output module, and the 485 communication module, and the 3.8V step-down module supplies power to the 4G module. The AC input module is also connected to the solenoid valve output module.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Users can monitor and control the sprinkler system as needed to achieve automatic or manual sprinkler operation. Users can also remotely control the sprinkler system by logging into the backend server via mobile phone to observe the temperature, humidity and rainfall of the roadbed, which greatly reduces the burden on staff.

[0015] This invention acquires environmental data of the roadbed using temperature and humidity sensors and rainfall sensors. The back-end server can control various peripheral components through the main control module based on the environmental data to achieve planned spraying. It can also control the spray path and spraying time in real time according to the specific site conditions, thereby enhancing the operability and flexibility of the equipment. Attached Figure Description

[0016] Figure 1 This is a hardware block diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a circuit diagram of the main control module in an embodiment of the present invention.

[0018] Figure 3 This is a circuit diagram of the 4G module and serial port level conversion circuit according to an embodiment of the present invention.

[0019] Figure 4 This is a circuit diagram of the power supply module according to an embodiment of the present invention.

[0020] Figure 5 This is a circuit diagram of the key input module according to an embodiment of the present invention.

[0021] Figure 6 This is a circuit diagram of the solenoid valve output module according to an embodiment of the present invention.

[0022] Figure 7 This is a circuit diagram of the 485 communication circuit for communicating with the temperature and humidity sensor and the interface for connecting with the rain sensor, which are embodiments of this utility model.

[0023] Figure 8 This is a circuit diagram of the 485 communication circuit connected to the extender in an embodiment of this utility model. Detailed Implementation

[0024] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 8 As shown, a roadbed spraying maintenance system includes a monitoring and control system. The monitoring and control system includes a waterproof temperature and humidity sensor for collecting the temperature and humidity of the cement surface, a rain sensor for acquiring rainfall, a 485 communication module, a DWIN screen for human interaction, a 4G module, a backend server for bidirectional communication with the 4G module, a main control module, a solenoid valve output module for controlling peripheral operating components, and a power supply module for supplying power to the components. The waterproof temperature and humidity sensor, rain sensor, 485 communication module, DWIN screen, 4G module, power supply module, and solenoid valve output module are respectively connected to the main control module.

[0026] Environmental data collected by waterproof temperature and humidity sensors and rain sensors are uploaded to the back-end server via a 4G module. The back-end server then sends a spray plan to the main control module via the 4G module. The main control module receives the task scheduling of the spray plan from the back-end server and controls the peripheral working elements to carry out spraying.

[0027] The main control module includes a main control chip and peripheral circuits. The main control chip can be an STM32F030CCT6 chip, which accepts task scheduling from the backend server and controls the working elements of various peripheral devices in the system. The peripheral circuits include an interface P7 for connecting to the 433 wireless module, a debug serial port P8 for debugging, a download interface P2, indicator lights for fault and operation, and an external crystal oscillator. The 4G module can communicate with the backend server using an EC200T module, uploading data obtained from sensor monitoring and transmitting instructions from the backend server to the main control module. The 4G module includes interfaces with the EC200T module. The system includes a connected NANO card slot, network indicator lights for network status, an energy storage inductor L1, and a filter / decoupling circuit. A rain sensor collects real-time rainfall data and, in conjunction with other sensors, helps to plan sprinkler usage or control sprinkler duration. Due to voltage mismatch between the 4G module and the main control chip, a serial port level conversion circuit is connected between them for communication. A DWIN screen enables human-machine interaction, allowing users to easily and conveniently use the system's various functions. The DWIN screen is a 7-inch resistive touchscreen; communication between the screen and the DWIN screen can be via RS-232 or TTL communication.

[0028] Furthermore, the roadbed spraying maintenance system also includes a soil temperature and humidity sensor for collecting soil temperature and humidity data. The soil temperature and humidity data collected by the soil temperature and humidity sensor is uploaded to the back-end server via a 4G module for user viewing and for the back-end server to formulate spraying plans. The soil temperature and humidity sensor is also connected to the main control chip via 485 communication.

[0029] Furthermore, such as Figure 6 As shown, the solenoid valve output module includes one main valve control circuit and twelve spray valve control circuits, enabling large-scale spraying plans. The spraying maintenance system includes a main water pipe and branch water pipes. A main control valve is installed on the main water pipe, and a branch control valve is also installed on each branch water pipe. The main control valve is connected to the main valve control circuit for control, and the branch control valves are connected to the spray valve control circuits for control. Of course, more or fewer branch spray valve control circuits can also be set. To monitor the spray flow rate, a flow transmitter connected to the main control module is also installed on the main water pipe. Flow transmitters can be optionally installed on the branch water pipes depending on the actual situation and budget. Both the main valve control circuit and the branch spray valve control circuits control the corresponding peripheral components through MOC3021 thyristor optocoupler relays. Figure 6 The diagram only schematically shows the main valve control circuit and three of its spray control circuits.

[0030] Furthermore, such as Figures 7 to 8As shown, the 485 communication module includes at least two 485 communication circuits, at least one of which is connected to a 485 bus extender; the other 485 communication module is connected to a cement pavement waterproof temperature and humidity sensor to collect the data acquired by the sensor; the cascading of the bus extender can make the spraying range wider.

[0031] Furthermore, such as Figure 5 As shown, the roadbed spraying maintenance system also includes a key input module connected to the main control module, which is used to set the 485 address.

[0032] Furthermore, the roadbed sprinkler maintenance system also includes a 433 wireless module that communicates with the main control module. The 433 wireless module is equipped with a remote control, enabling online remote control of each sprinkler system. The 433 wireless module... Figure 1 The interface P7 in the module is connected to the main control module.

[0033] Users can log in to the backend server via smartphones or other smart mobile devices to view roadbed environmental data, and then manually set sprinkler plans, real-time sprinkler settings, associated sprinkler settings, and remote sprinkler control. Sprinkler plan settings include customizing sprinkler routes, sprinkler times, and sprinkler methods, enabling scheduled and regular sprinkler operation. When setting a plan, a standard value is first set, such as a cement ground temperature of 40 degrees Celsius, a cement ground humidity of 30%, and a cumulative rainfall of 10 mm within 24 hours. Then, the sprinkler volume is adjusted based on the temperature and humidity of the cement pavement, actual rainfall, and expected rainfall. Real-time sprinkler control is used to control the sprinkler route and sprinkler time in real time according to the specific site conditions. Associated sprinkler control links the sprinkler plan and sprinkler control with temperature, humidity, rainfall, and local meteorological data, automatically controlling the increase or decrease of sprinkler time. If the expected rainfall exceeds the daily sprinkler requirement, sprinkler operation is stopped in time to save water resources.

[0034] The spraying of the roadbed spraying maintenance system is controlled by a monitoring and control system, which greatly enhances the operability and flexibility of the equipment and reduces the burden on the staff.

[0035] The temperature and humidity of the cement pavement, soil temperature and humidity, and rainfall collected on-site are uploaded to the back-end server via the 4G module. The back-end server integrates weather forecasts, analyzes the data to formulate a spraying plan, and issues control commands. The main control module controls the on-site peripheral working elements to carry out spraying and maintenance work according to the control commands.

[0036] The spraying schedule is usually set to spray once every four or six hours;

[0037] Instant spraying means that when the waterproof temperature and humidity sensor sends abnormal data to the back-end server, the back-end server will automatically control the main control module to implement the spraying plan. Abnormal data means that the waterproof temperature and humidity sensor detects that the temperature of the cement floor is higher than 40 degrees or the humidity of the cement floor is lower than 30%.

[0038] When the rain sensor collects an average rainfall of 10 mm over 24 hours, the backend server will pause the sprinkler program. The sprinkler program will then restart when the rain sensor collects an average rainfall of less than 1 mm over 24 hours.

[0039] Furthermore, such as Figure 4 As shown, the power supply module includes an AC input module for connecting to external AC power, a rectifier and filter module connected to the AC input module for rectifying the external AC power, a 12V step-down module connected to the rectifier and filter module, and a 3.3V step-down module and a 3.8V step-down module connected to the 12V step-down module. The 12V step-down module powers the DWIN screen, the 3.3V step-down module powers the main control module, the key input module, the serial port level conversion circuit, the RS232 circuit, the rain sensor, the solenoid valve output module, and the 485 communication module, and the 3.8V step-down module powers the 4G module. The AC input module is also connected to the solenoid valve output module.

[0040] The power supply circuit uses AC24V to power the system. The AC24V power supply is connected to the AC input module through the terminal block. After rectification and filtering by the rectifier and filter module, it is stepped down by a DC-DC power chip. The 12V step-down module uses the XL1507 ADJE1 switching power supply chip to step down the 24V to 12V to power the DWIN screen and subsequent circuits. The output voltage difference between 12V and 3.8V / 3.3V is large, and the instantaneous current of the 4G module is large when the signal is poor. If an LDO step-down chip is used, it will cause the chip to heat up and lose a lot of power. Therefore, the regulated power supply from 12V to 3.8V / 3.3V uses a DC-DC power chip. The 3.3V step-down module and the 3.8V step-down module both use the MT2492 switching power supply chip for step-down power supply.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A subgrade spray maintenance system characterized by: The system includes a monitoring and control system, comprising a waterproof temperature and humidity sensor for collecting temperature and humidity data of the cement surface, a rain sensor for acquiring rainfall data, a 485 communication module, a DWIN screen for human-computer interaction, a 4G module, a backend server for bidirectional communication with the 4G module, a main control module, a solenoid valve output module for controlling peripheral operating components, and a power supply module for supplying power to the components; the waterproof temperature and humidity sensor, rain sensor, 485 communication module, DWIN screen, 4G module, power supply module, and solenoid valve output module are respectively connected to the main control module; The environmental data collected by the waterproof temperature and humidity sensor and the rainfall sensor are uploaded to the backend server via the 4G module. The backend server sends the spraying plan to the main control module via the 4G module. The main control module receives the task scheduling of the spraying plan from the backend server and controls the peripheral working elements to carry out spraying.

2. The embankment spray maintenance system of claim 1, wherein: It also includes a soil temperature and humidity sensor for collecting soil temperature and humidity data, which is uploaded to the backend server via a 4G module.

3. The embankment spray maintenance system of claim 1, wherein: The solenoid valve output module includes one main valve control circuit and twelve spray valve control circuits.

4. The embankment spray maintenance system of claim 1, wherein: The 485 communication module includes at least two 485 communication circuits, at least one of which is connected to a 485 bus extender.

5. The subgrade spray maintenance system of claim 1, wherein: It also includes a key input module connected to the main control module, which is used to set the 485 address.

6. The roadbed spray curing system according to claim 1, characterized in that: It also includes a 433 wireless module that communicates with the main control module, and the 433 wireless module is matched with a remote control.

7. The sub-grade spray maintenance system of claim 1, wherein: The power supply module includes an AC input module for connecting to external AC power, a rectifier and filter module connected to the AC input module for rectifying the external AC power, a 12V step-down module connected to the rectifier and filter module, and a 3.3V step-down module and a 3.8V step-down module connected to the 12V step-down module. The 12V step-down module supplies power to the DWIN screen, the 3.3V step-down module supplies power to the main control module, the rain sensor, the solenoid valve output module, and the 485 communication module, and the 3.8V step-down module supplies power to the 4G module. The AC input module is also connected to the solenoid valve output module.

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