CN215865377U

CN215865377U - Water level remote wireless monitoring terminal and system based on NBIOT communication

Info

Publication number: CN215865377U
Application number: CN202121027742.5U
Authority: CN
Inventors: 刘晓凯; 梁凤龙; 王彦强; 常锋伟; 李毅飞
Original assignee: Beijing Cyber Xingtong Technology Co ltd
Current assignee: Beijing Cyber Xingtong Technology Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2022-02-18
Anticipated expiration: 2031-05-13

Abstract

The utility model provides a water level remote wireless monitoring terminal and system based on NBIOT communication, the wireless monitoring system comprises: the system comprises a water level remote wireless monitoring terminal, a server and a client. The server is in wireless communication connection with the water level remote wireless monitoring terminal and the client respectively. The water level remote wireless monitoring terminal is used for monitoring water level change information in an environment in real time and sending the water level change information to the server through NBIOT wireless communication; and the server side analyzes the collected water level information and sends platform alarm and short message alarm notification to the client side. The utility model overcomes the defects of the prior art and provides a water level remote wireless monitoring terminal and system based on NBIOT communication; by adopting the NBIOT wireless communication scheme, cables do not need to be laid when the monitoring system is installed and deployed, and the safety and the stability of communication are ensured.

Description

Water level remote wireless monitoring terminal and system based on NBIOT communication

Technical Field

The utility model belongs to the technical field of remote sensing, and particularly relates to a water level remote wireless monitoring terminal and system based on NBIOT communication.

Background

At present, as the intelligent water affairs of China enter an integrated information scheduling stage, the demand for video and Internet of things artificial intelligence is increased rapidly, a water affair informatization comprehensive system consisting of infrastructure, an application system and a guarantee environment is formed preliminarily, the traditional water affair is pushed to be changed to modernized and sustainable development water affairs, and a solid foundation is provided for intelligent water affair construction. However, the application of the internet of things technology in the water business industry of China is still in a primary stage at present, the number of water business scene supervision objects is large, the water business scene supervision objects are widely distributed, most of the objects are still inspected in a manual mode, the time is long, the coverage range is small, the personnel investment is large, the workload is large, and the investment cost is high. The minimum part is used for acquiring water affair scene information and processing an informatization application system through the equipment of the Internet of things; however, in the existing monitoring system, a large amount of cables are used for communication, the safety of constructors is seriously affected by the use of the cables, and the maintenance is inconvenient, particularly in an irregular terrain environment. It is therefore highly desirable to communicate information wirelessly. The monitoring system in the prior art mainly comprises an acquisition module, a central processing module and a data server, wherein the acquisition module transmits acquired information to the central processing module through a cable, and the central processing module transmits the data to the server through a GSM network for storage and display. However, the power consumption of the existing wireless communication equipment is generally large, the available time is short, and once the power is off, the monitoring system cannot work normally, so that the use of a user is influenced. A monitoring system with low power consumption is an important issue to be solved urgently in the industry at present. And the popularization of 5G communication is faced at present, so that the water service equipment which is already put into use for 2G communication is faced with elimination.

Aiming at the technical problems of inconvenient installation and maintenance, unstable work due to large system power consumption, safe communication and the like caused by cable connection in the prior art, an effective solution is not provided at present.

Disclosure of Invention

In order to solve the above technical problem, the present invention provides a water level remote wireless monitoring terminal based on NBIOT communication, wherein the water level remote wireless monitoring terminal comprises: the device comprises a timer RTC unit, a microprocessor MCU unit, a water level sensor unit, an NBIOT wireless communication unit, a battery monitoring VF unit and a plurality of voltage conversion modules; the timer unit is connected with the microprocessor unit to generate a periodic wake-up clock for the microprocessor unit; the water level data collected by the water level sensor unit is provided for the microprocessor unit to carry out data processing; the NBIOT wireless communication unit sends the data processed by the microprocessor to a server; the battery monitoring VF unit collects the electric quantity of a power supply of the water level remote wireless monitoring terminal and feeds back data to the microprocessor unit to perform data processing on the electric quantity of the power supply, and the voltage conversion modules supply power to all units in the water level remote wireless monitoring terminal.

Preferably, the timer RTC unit is a TPL5110 low-power consumption timer.

Preferably, the microprocessor adopts STM8L152K4T6 as a master control chip, and has three working modes: a sleep mode, an acquisition mode and a sending mode; the main control chip is connected with the two groups of crystal oscillators, and the high-frequency crystal oscillator is used in a working mode and is used for rapidly processing detection data information; after the low-frequency crystal oscillator is used to enter a sleep mode, the main control chip is in a limit low power consumption mode; the main control chip is also provided with a manual reset switch and a working state indicating LED.

Further, in the sleep mode, the water level sensor and the NBIOT wireless communication unit are in a stop working state;

the timer generates a wake-up clock every other programming period, wakes up the microprocessor unit to rapidly change from the sleep mode to the acquisition mode, and starts the water level sensor unit to perform acquisition work;

the microprocessor analyzes the acquired data, determines that the variation of the acquired data exceeds a set threshold, converts the acquisition mode into a transmission mode, and sends the real-time acquired data to the server through the NBIOT wireless communication unit; then entering the sleep mode again; the terminal equipment enters a dormant state to wait for the next awakening collection;

if the microprocessor analyzes that the collected data is in the set threshold range, the collection mode is directly changed into the sleep mode.

Furthermore, the water level sensor unit adopts an HDL300 type liquid level transmitter, and the output of the water level sensor unit is directly connected with the signal input terminal of the microprocessor.

Furthermore, the voltage conversion module comprises two groups of boosting modules which respectively supply power to the water level sensor unit and the NBIOT wireless communication unit; each group of the boosting modules adopts TPS61021A as a main chip. The 3.6V cell voltage was converted to 3.8V.

Furthermore, TPL700 is adopted as a main chip for a power supply module of the microprocessor, and 3.6V battery voltage is converted into 3.3V stable voltage to supply power for the MCU-STM8L unit.

Furthermore, the battery monitoring unit adopts an ADC acquisition design, the battery monitoring unit uses a PC817 optical coupler isolator to control the disconnection or connection of the ADC acquisition, and the power supply voltage is converted into a digital signal and fed back to the microprocessor unit during connection.

Furthermore, the NBIOT wireless transmission module adopts a BC35-G module and is connected with an SMF05C as a SIM card main chip.

The utility model also provides a water level remote wireless monitoring system based on NBIOT communication, which comprises: the system comprises a water level remote wireless monitoring terminal, a server and a client. The server is in wireless communication connection with the water level remote wireless monitoring terminal and the client respectively. The water level remote wireless monitoring terminal is used for monitoring water level change information in an environment in real time and sending the water level change information to the server through NBIOT wireless communication; and the server side analyzes the collected water level information and sends platform alarm and short message alarm notification to the client side.

The utility model overcomes the technical problems in the prior art and provides a water level remote wireless monitoring terminal and system based on NBIOT communication; by adopting the NBIOT wireless communication scheme, cables do not need to be laid when the monitoring system is installed and deployed, and the safety and the stability of communication are ensured; an ultra-low energy consumption working chip and a high-efficiency voltage conversion circuit are selected, so that the service efficiency of the battery is improved; the periodic program with ultra-low power consumption enables the whole system to work only within the preset time, and reduces the power consumption, thereby solving the technical problems of inconvenient installation and maintenance caused by cable connection, unstable work caused by large power consumption of the system, safe communication and the like in the prior art.

The utility model can be used for monitoring water level of underground environment and field environment such as water conservancy valve wells, municipal valve wells, deep wells, riverways, ditches, variable-frequency water supply stations and the like. The wireless NB-IoT communication technology is adopted, wiring is not needed, and fixed installation is simple, convenient and quick; high accuracy liquid level sensing probe, ultra-low power consumption system design, the real-time detection water level change condition in the current environment to replace artifical mode tour, realize wide coverage, multiple spot, high accuracy real-time acquisition water affair scene information, establish the early warning analysis model of datamation, reduce artifical input cost, play the safety precaution function. The method is beneficial to perfecting the construction of water level information data of a water affair scene and accelerating the construction of an intelligent water affair integrated informatization application system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a water level remote wireless monitoring terminal system;

FIG. 2 is a circuit diagram of a timer (RTC) unit;

FIG. 3 is a circuit diagram of a Microcontroller (MCU) STM8L cell;

FIG. 4 is a circuit diagram of a water LEVEL SENSOR (SENSOR-LEVEL) unit;

FIG. 5 is a circuit diagram of a VF unit;

FIG. 6 is a circuit diagram of a voltage conversion module (PMU-SENSOR) unit powering the SENSORs;

FIG. 7 is a circuit diagram of a voltage conversion module (PMU-NBIOT) unit powering the communication circuitry;

FIG. 8 is a circuit diagram of a voltage conversion module (PMU-MCU) unit powering a microprocessor;

fig. 9 is a circuit diagram of a battery voltage module (PMU-VBAT) unit.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

The utility model provides a water level remote wireless monitoring terminal based on NBIOT communication, as shown in figure 1, the wireless monitoring terminal comprises: the device comprises an RTC unit, an MCU-STM8L unit, a SENSOR-LEVEL unit, an NBIOT-BC35 unit, a VF unit and a PMU module. The PMU module comprises a PMU-SENSOR unit, a PMU-MCU unit, a PMU-NBIOT unit and a PMU-VBAT unit. The MCU-STM8L unit is provided with an ultra-low power consumption design program; the RTC unit is connected with the MCU-STM8L unit to generate a periodic wake-up clock; the SENSOR-LEVEL unit is connected with the MCU-STM8L unit and feeds SENSOR acquisition data back to the MCU-STM8L unit for data processing; the NBIOT-BC35 unit is connected with the MCU-STM8L unit and sends the processed data to the server; the VF unit is connected with the MCU-STM8L unit, acquires the electric quantity of a power supply battery of the water level remote wireless monitoring terminal, and feeds data back to the MCU-STM8L unit for data processing; the PMU-SENSOR unit is connected with the SENSOR-LEVEL unit and is controlled by the MCU-STM8L unit to provide independent power supply for the PMU-SENSOR unit; the PMU-MCU unit is connected with the MCU-STM8L unit and provides independent power supply for the MCU-STM8L unit; the PMU-NBIOT unit is connected with the NBIOT-BC35 unit and is controlled by the MCU-STM8L unit to provide independent power supply for the unit; and the PMU-VBAT unit is used as the power supply input of the terminal equipment to supply power to the whole equipment.

In the utility model, the RTC unit selects a TPL5110 low-power consumption timer. As shown in fig. 2, TPL5110 has an integrated MOSFET driver designed specifically for duty cycle or power gating in battery powered applications. The current consumption is only 35nA, an RTC awakening clock of 0.1HZ is provided for the MCU-STM8L unit, and the total system standby current during the sleep period is greatly reduced, so that the working stability is ensured, and the energy conservation and consumption reduction are realized.

In the utility model, an MCU-STM8L unit selects an STM8L152K4T6 ultra-low power consumption product of an ideological semiconductor as a main chip. As shown in fig. 3, the ultra-low leakage current process proprietary to STM8L152K4T6, achieves ultra-low power consumption (0.30uA) with the lowest power consumption mode. The low-power-consumption crystal oscillator has multiple operation modes such as a halt mode, a wait mode and an active-halt mode, and can reach a limit low-power-consumption mode after the low-frequency crystal oscillator enters the halt mode. By using the STM8L152K4T6 as a core processor, the problem of overlarge energy consumption in the prior art can be effectively solved.

In the utility model, the SENSOR-LEVEL unit adopts an HDL300 type liquid LEVEL transmitter. As shown in FIG. 4, the liquid level transmitter adopts the diffused silicon piezoresistive effect based on the principle that the measured static pressure of the liquid level is in direct proportion to the height of the liquid, converts the pressure into an electric signal, converts the electric signal into a standard voltage signal through temperature compensation and linear calibration, and outputs the standard voltage signal which is directly connected with an MCU-STM8L unit. The comprehensive precision can reach +/-0.5 percent F.S, and the method has good stability and reliability.

In the utility model, the NBIOT-BC35 unit is a BC35-G module. The BC35-G module is a multiband NB-IoT wireless communication module which is developed based on Huashi chips and has high performance, ultra-low power consumption and ultra-high sensitivity, supports B1/B3/B8/B5/B20/B28 frequency bands and protocol stacks such as UDP/TCP/CoAP/LwM2M/MQTT and has good safety, stability and reliability. Thereby ensuring stable work, saving energy and reducing consumption.

In the utility model, the VF unit adopts an ADC acquisition design, as shown in figure 5, the VF unit uses a PC817 optical coupler isolator to disconnect or connect the ADC acquisition control, and converts the power voltage into a digital signal and feeds back the digital signal to the MCU-STM8L unit during connection. Otherwise, the device is in a disconnected state, thereby ensuring stable work, saving energy and reducing consumption.

In the utility model, both the PMU-SENSOR unit and the PMU-NBIOT unit of the PMU module adopt TPS61021A as a main chip. As shown in fig. 6 and 7, the TPS61021A has a voltage step-up converter with ultra-low voltage input, has the advantages of large voltage input range and high conversion efficiency, converts a 3.6V battery voltage into 3.8V, and supplies power to the PMU-SENSOR unit and the PMU-NBIOT unit; and TPS61021A still has the capability of outputting stable 3.8V voltage under the condition of low battery voltage, thereby ensuring that the PMU-SENSOR unit and PMU-NBIOT unit keep stable operation.

In the utility model, a PMU module PMU-MCU unit selects TPL700 as a main chip. As shown in fig. 8, the TPL700 has the advantages of high isolation and high conversion efficiency, and converts the 3.6V battery voltage into a 3.3V stable voltage to supply power to the MCU-STM8L unit.

In the utility model, the PMU-VBAT unit of the PMU module selects a 3.6V power type lithium sub-battery as the power supply input of the terminal equipment. The nominal voltage of the lithium subcell is 3.6V as shown in FIG. 9, and the working voltage can keep obvious smoothness during the whole service life; the self-discharge rate is extremely low, and the annual self-discharge rate is less than or equal to 2 percent; the maximum continuous discharge current can reach 2000mA, the maximum pulse discharge capacity can reach 3000mA, and the requirement of transmitting the maximum discharge current in mobile communication is met; meanwhile, the stainless steel shell and the metal-glass sealed airtight welding structure are adopted in the manufacturing process, leakage is effectively avoided, and the stainless steel shell can be stored for more than 10 years at room temperature; the paint does not contain mercury, cadmium, lead and other heavy metals, and has no environmental hazard; thereby ensuring the stable work.

The utility model provides a water level remote wireless monitoring system based on NBIOT communication, which comprises: the system comprises a water level remote wireless monitoring terminal, a server and a client. The server is in wireless communication connection with the water level remote wireless monitoring terminal and the client respectively. The water level remote wireless monitoring terminal is used for monitoring water level change information in an environment in real time and sending the water level change information to the server through NBIOT wireless communication; and the server side analyzes the collected water level information and sends platform alarm and short message alarm notification to the client side.

The utility model overcomes the prior art and provides a water level remote wireless monitoring terminal and system based on NBIOT communication; by adopting the NBIOT wireless communication scheme, cables do not need to be laid when the monitoring system is installed and deployed, and the safety and the stability of communication are ensured; an ultra-low energy consumption working chip and a high-efficiency voltage conversion circuit are selected, so that the service efficiency of the battery is improved; the periodic program with ultra-low power consumption enables the whole system to work only within the preset time, and reduces the power consumption, thereby solving the technical problems of inconvenient installation and maintenance caused by cable connection, unstable work caused by large power consumption of the system, safe communication and the like in the prior art.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example (b):

according to an aspect of the present embodiment, there is provided a water level remote wireless monitoring terminal based on NBIOT communication, as shown in fig. 1, the wireless monitoring terminal includes: the device comprises an RTC unit, an MCU-STM8L unit, a SENSOR-LEVEL unit, an NBIOT-BC35 unit, a VF unit and a PMU module. The PMU module comprises a PMU-SENSOR unit, a PMU-MCU unit, a PMU-NBIOT unit and a PMU-VBAT unit. The MCU-STM8L unit is provided with an ultra-low power consumption design program; the RTC unit is connected with the MCU-STM8L unit to generate a periodic wake-up clock; the SENSOR-LEVEL unit is connected with the MCU-STM8L unit and feeds SENSOR acquisition data back to the MCU-STM8L unit for data processing; the NBIOT-BC35 unit is connected with the MCU-STM8L unit and sends the processed data to the server; the VF unit is connected with the MCU-STM8L unit, acquires the electric quantity of a power supply battery of the water level remote wireless monitoring terminal, and feeds data back to the MCU-STM8L unit for data processing; the PMU-SENSOR unit is connected with the SENSOR-LEVEL unit and is controlled by the MCU-STM8L unit to provide independent power supply for the PMU-SENSOR unit; the PMU-MCU unit is connected with the MCU-STM8L unit and provides independent power supply for the MCU-STM8L unit; the PMU-NBIOT unit is connected with the NBIOT-BC35 unit and is controlled by the MCU-STM8L unit to provide independent power supply for the unit; and the PMU-VBAT unit is used as the power supply input of the terminal equipment to supply power to the whole equipment.

Specifically, in the present embodiment, as shown in fig. 1, the MCU-STM8L unit has three operation modes: the system comprises a sleep mode, an acquisition mode and a sending mode, wherein a program setting system is in the sleep mode after being started, and a PMU-SENSOR unit and a PMU-NBIOT unit are in a disconnected state in the sleep mode, because the SENSOR-LEVEL unit, the NBIOT-BC35 unit and a VF unit are in a stop working state; therefore, the terminal equipment is ensured to work in the lowest power consumption state.

The RTC unit generates a wake-up clock every other programming period (for example, the interval period is 10s), and triggers the MCU-STM8L unit to interrupt control to wake up the MCU-STM8L unit; and (3) the MCU-STM8L unit is set by the program to be rapidly changed into the acquisition mode from the sleep mode, and the PMU-SENSOR unit is controlled to be turned on, so that the SENSOR unit is started to perform acquisition work.

And after the SENSOR unit is started, collecting environmental data within 50ms, feeding the data back to the MCU-STM8L unit for data processing, and simultaneously shutting down the PMU-SENSOR unit and stopping the operation of the SENSOR unit.

If the analysis collected data changes within the range of the program set threshold (for example, the water level threshold is increased or decreased by more than 100mm), the program set terminal equipment is changed from the collection mode to the transmission mode, the PMU-NBIOT unit is opened, the NBIOT-BC35 unit is started, and the real-time collected data is sent to the server; meanwhile, the PMU-NBIOT unit is closed, the NBIOT-BC35 unit stops working, and the program is set to enter a sleep mode; and the terminal equipment enters a dormant state to wait for the next awakening collection.

If the analysis acquisition data is not changed within the range of the program set threshold (for example, the water level threshold is increased or decreased within 100mm), the program sets the terminal equipment to be changed from the acquisition mode to the sleep mode; and the terminal equipment enters a dormant state to wait for the next awakening collection.

If the server receives the terminal early warning information, the server sends a generated early warning message notice to the client, and the client processes the alarm in real time.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water level remote wireless monitoring terminal based on NBIOT communication is characterized in that the water level remote wireless monitoring terminal comprises: the device comprises a timer RTC unit, a microprocessor unit, a water level sensor unit, an NBIOT wireless communication unit, a battery monitoring VF unit and a plurality of voltage conversion modules; the timer unit is connected with the microprocessor unit and used for generating a periodic wake-up clock; the water level data collected by the water level sensor unit is provided for the microprocessor unit to carry out data processing; the NBIOT wireless communication unit sends the data processed by the microprocessor unit to a server; the battery monitoring VF unit acquires the electric quantity of a power supply of the water level remote wireless monitoring terminal and feeds the electric quantity back to the microprocessor unit for data processing; the voltage conversion modules supply power to all functional units in the water level remote wireless monitoring terminal.

2. The wireless remote water level monitoring terminal according to claim 1, wherein the microprocessor unit has three operation modes: a sleep mode, an acquisition mode and a transmission mode; the microprocessor unit is connected with two groups of crystal oscillators: a high-frequency crystal oscillator and a low-frequency crystal oscillator; the microprocessor unit enters a working mode by using a high-frequency crystal oscillator and is used for rapidly processing detection data information; the microprocessor unit enters a sleep mode by using a low-frequency crystal oscillator and is in a limit low power consumption mode; the microprocessor unit is also provided with a manual reset switch and a working state indicating LED.

3. The wireless remote water level monitoring terminal according to claim 2, wherein in the sleep mode, the water level sensor unit and the NBIOT wireless communication unit are in a deactivated state;

the microprocessor unit analyzes the acquired data and sends the acquired data to the server in real time through the NBIOT wireless communication unit.

4. The wireless remote water level monitoring terminal according to claim 1, wherein the output terminal of the water level sensor unit is directly connected to the signal input terminal of the microprocessor unit.

5. The water level remote wireless monitoring terminal according to claim 1, wherein the voltage conversion module comprises two groups of voltage boosting modules for respectively supplying power to the water level sensor unit and the NBIOT wireless communication unit; the boost module converts a 3.6V battery voltage to 3.8V.

6. The water level remote wireless monitoring terminal according to claim 1, wherein the battery monitoring unit is designed by adopting ADC acquisition, the battery monitoring unit controls the disconnection or connection of the ADC acquisition by using an optical coupler isolator, and when the battery monitoring unit is connected, the power supply voltage is converted into a digital signal and fed back to the microprocessor unit.

7. The wireless remote water level monitoring terminal as claimed in claim 1, wherein the NBIOT wireless communication unit employs a BC35-G module.

8. A water level remote wireless monitoring system based on NBIOT communication, the wireless monitoring system comprises: the water level remote wireless monitoring terminal, the server and the client according to any one of claims 1 to 7, wherein the server is connected with the water level remote wireless monitoring terminal and the client in a wireless communication manner, respectively, and the water level remote wireless monitoring terminal is used for monitoring water level change information in an environment in real time and sending the water level change information to the server through NBIOT wireless communication; and the server side analyzes the collected water level information and sends platform alarm and short message alarm notification to the client side.