CN212008563U - Water quality parameter monitoring device - Google Patents
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- CN212008563U CN212008563U CN202020798383.2U CN202020798383U CN212008563U CN 212008563 U CN212008563 U CN 212008563U CN 202020798383 U CN202020798383 U CN 202020798383U CN 212008563 U CN212008563 U CN 212008563U
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Abstract
The utility model discloses a water quality parameter monitoring device, which comprises a group of water quality parameter acquisition node units, a data collection gateway unit and a cloud server unit which are connected together by a wireless network, wherein each water quality parameter acquisition node in the water quality parameter acquisition node units is provided with a node MCU module and a serial port-to-RS-485 module, a first 433MHz wireless communication module, a relay control module and a first power module which are connected with the node MCU module, and the serial port-to-RS-485 module is externally connected with a water quality sensor; the data collection gateway unit is provided with a gateway MCU module and a gateway setting key module, a second 433MHz wireless communication module, a gateway data storage module, an Ethernet module, a second power supply module, an NB-IOT communication module, a serial port screen display module and an audible and visual alarm module which are connected with the gateway MCU module. The device has the characteristics of real-time data interaction function, easiness in deployment and low cost.
Description
Technical Field
The utility model relates to an environmental protection equipment specifically is a water quality parameter monitoring devices.
Background
At present, the water quality monitoring station monitoring, the wireless remote sensing monitoring and the wireless sensor network monitoring of water quality parameters are realized by adopting field manual detection and analysis to implement manual detection, which has strict requirements on workers, complex technical realization and poor real-time property; in addition, most monitoring systems can only realize local data acquisition and storage, cannot realize remote real-time integrated monitoring and display for users, generally, the working environment of the equipment is strict, the manufacturing cost is high, the power consumption is high, the sensor needs to adopt a specific sensor, the compatibility of the specific sensor is poor, large-scale deployment is difficult, the replacement is troublesome, the working state of the monitoring equipment cannot be remotely controlled, and the firmware of the MCU processor of the node equipment cannot be updated according to actual requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water quality parameter monitoring device aiming at the defects of the prior art. The device has the characteristics of real-time data interaction function, easiness in deployment and low cost.
Realize the utility model discloses the technical scheme of purpose is:
a water quality parameter monitoring device comprises a group of water quality parameter acquisition node units, a data collection gateway unit and a cloud server unit which are connected together through a wireless network, wherein each water quality parameter acquisition node in the water quality parameter acquisition node units is provided with a node MCU module, a serial port-to-RS-485 module, a first 433MHz wireless communication module, a relay control module and a first power module, the serial port-to-RS-485 module is connected with the node MCU module, and a water quality sensor is externally connected with the serial port-to-RS-485 module; the data collection gateway unit is provided with a gateway MCU module and a gateway setting key module, a second 433MHz wireless communication module, a gateway data storage module, an Ethernet module, a second power supply module, an NB-IOT communication module, a serial port screen display module and an audible and visual alarm module which are connected with the gateway MCU module, and the cloud server is used for storing and processing data and providing Web display and parameter setting, and pushing of gateways and node firmware. Each acquisition node is in wireless communication connection with the data collection gateway through a 433MHz wireless communication module, and the data collection gateway is in communication connection with the cloud server through an NB-IOT communication module or an Ethernet module.
The node MCU module is a new Tang high-speed 1T 8051 singlechip series product N76E003, the working frequency of an internal clock of the N76E003 chip can reach 16 MHz, the chip is provided with an 18 KB programmable Flash ROM, a configurable Data Flash and a high-capacity 1 KB SRAM, an online system is supported to update ISP and IAP, two flexibly configurable full-duplex multifunctional UARTs are arranged in the chip, the wide working voltage of 2.4V to 5.5V and the working temperature of-40 ℃ to 105 ℃ are supported, the chip has high anti-interference capability of 7KV ESD/4KV EFT, and the main functions are to finish Data reading detected by a water quality sensor by converting a serial port into an RS-485 module, finish transceiving gateway Data by a first 433MHz wireless communication module and a second 433MHz wireless communication module and finish working state control of equipment by a relay control module.
The serial port-to-RS-485 communication module is an SP3485EN-L/TR chip and a peripheral circuit thereof, is a universal low-power-consumption RS-485 communication conversion chip, has a communication rate of 10Mbps, and is compatible with various RS-485 sensor access nodes for data acquisition.
The water quality sensor is an RS-485 interface type water quality sensor, the RS-485 interface type water quality sensor can improve the compatibility of sensor access, and each monitoring node is allowed to select one or more corresponding water quality sensors to access according to actual conditions only after the firmware is slightly changed and updated on a control program.
The relay control module comprises a relay, and a triode and an optocoupler which are connected with the relay, the rated current of a relay contact is 10 amperes, the relay is driven and controlled by the triode, and IO control isolation is performed between the optocoupler and the node MCU module.
The first 433MHz wireless communication module and the second 433MHz wireless communication module are HC-12 wireless 433MHz serial port modules, programs are arranged in the HC-12 wireless 433MHz serial port modules, automatic networking can be achieved, transparent data transmission is supported, the communication distance can be adjusted to 1000m AT most, the air baud rate is 5000bps, the working mode and various parameters of the modules can be dynamically set through serial port AT instructions, and remote communication between the node MCU modules and the gateway MCU modules can be achieved through UART serial ports.
The gateway MCU module is STM32F103C8T6 of meaning semiconductor production, STM32F103C8T6 is a 32-bit microcontroller based on ARM Cortex-M kernel STM32 series, 72 MHz's operating frequency, 64 KB's programmable Flash memory and SRAM up to 20 KB, but built-in three nimble multi-functional UART of full duplex that disposes, two way SPI communication possesses DMA high-speed transmission, 12 ADC sampling, common peripheral hardware such as outside IO interrupt detection.
The gateway setting key module is provided with a node device selection key, a function setting key, an added value key, a reduced value key and a confirmation key, the node device selection key is used for selecting a corresponding node to be set with parameters, corresponding node IDs are displayed on the serial port screen every time, different nodes are selected according to the IDs, the function setting key is used for selecting a node alarm value to be set, and a node relay timed working time or emergency braking control device, the added value key and the reduced value key are used for adjusting the value of the corresponding setting function when the functions are set, the added value key and the reduced value key are increased or reduced every time when the value unit is pressed, the water quality parameters of different nodes can be displayed by turning up and down the pages on the serial port screen during normal use, and the confirmation key is used for setting and confirming after finishing.
The gateway data storage module is provided with a self-elastic SD card seat and an SD memory card, the gateway MCU module writes data of each node into the SD card through the SPI interface for storage, the SD card is used for storing the data, the data loss during network connection failure can be prevented, the data can be checked through a computer conveniently, and the gateway data storage module is used for analyzing the data and judging nodes with abnormal work so as to replace node equipment.
The Ethernet module is a W5500 module, integrates a full hardware TCP/IP protocol stack, does not need codes to realize the TCP/IP protocol stack, supports the transmission rate of 10/100Mbps, internally integrates a 32k TX/RX cache, and communicates with the gateway MCU module through an SPI interface.
The gateway NB-IOT communication module is a BC26 module, the BC26 module is a multi-band LTE Cat NB1/Cat NB2 wireless communication module with high performance and low power consumption, and the wireless communication module supports China Mobile OneNet/Andlink, China telecom IoT/AEP, Oceanconnect and Ali cloud Internet of things cloud platform, supports multi-band and rich external interfaces, and is embedded with a network service protocol stack, and is convenient to apply.
The gateway serial port screen is displayed as a USART HMI 3.5-inch resistance type touch serial port intelligent screen and is used for displaying node water quality parameter information and setting parameter display.
The acousto-optic warning module is provided with a buzzer and an LED which are interconnected, when the gateway judges that the water quality parameter value is not at a set normal value, the gateway sends out rapid warning sound and flashes rapidly with the red LED, if equipment needs emergency braking, the gateway can send an instruction to the corresponding node MCU module through the second 433MHz wireless communication module, then the node MCU module controls the relay module to be disconnected, so that the equipment can be braked emergently, the water quality parameter can be collected continuously without being influenced, and the warning is stopped until the data is recovered to be normal.
The cloud server adopts an Ali cloud server, the server is used for establishing a database to store, analyze and process data, and is provided with a Web server, the Web displays water quality parameter information to a user in real time, allows various parameters such as a water quality parameter alarm value to be set, and remotely controls the working state of equipment.
The first power module and the second power module both adopt AC-DC digital switching power RS-25-24|24V 1.1A and LM2596R-ADJ DC-DC voltage reduction chips, the AC-DC digital switching power is used for converting 220V alternating current voltage into 24V direct current, then the 24V direct current voltage is converted into direct current 12V and direct current 5V through LM2596R-ADJ respectively, wherein an external power supply interface is reserved in a node circuit for supplying power to the water quality sensor for the direct current 24V, the direct current 12V and the direct current 5V of the first power module, and the direct current 5V of the second power module is reduced by AMS117-3.3 to output 3.3V direct current voltage to supply power to the node MCU module, the gateway MCU module and other circuits.
The working process of the device is as follows:
in the acquisition node unit, a first power supply module provides 24V and 12V direct-current power supplies for a water quality sensor, 5V is provided for a relay module and a first 433MHz wireless communication module, 3.3V power supplies are provided for a node MCU module and a serial port to 485 module, the node MCU module reads and sets data of the water quality sensor through the serial port to 485 module, the node MCU module analyzes the data according to a sensor protocol, reports the data to a gateway through the first 433M wireless communication module when receiving a query instruction sent by a second 433M wireless communication module of the gateway, analyzes other instructions from the gateway unit, controls the working state of the relay if controlling the relay instruction, enters an upgrading state if upgrading the firmware instruction and waits for receiving upgrading data until upgrading is completed, and the communication between the node unit and the gateway unit depends on the first power supply, The second 433MHz wireless communication module; in the gateway unit, the gateway MCU module sends query instructions to each node at regular time through the second 433MHz wireless communication module, each node identifies which node the data comes from according to whether the address ID in the instruction is consistent with the address stored by the node, if so, the data is reported to the gateway, otherwise, no processing is carried out, the gateway also identifies the node from which the data comes through the address ID, then the data is stored in a local SD card, meanwhile, the queried data is compared with the set alarm value, if not, the relay control instruction is immediately issued to the working state of the corresponding node control equipment, after the gateway unit polls all the node units within a certain time, the data of all the node units are rearranged according to a protocol, then the data are actively sent to a cloud server through an Ethernet module or an NB-IOT communication module by using a network, and the data of the node units can be displayed on a serial port on the gateway unit in real time, the gateway key module can set an alarm value and relay on-off of each node, the gateway unit can judge whether gateway unit data or node unit data are received by the Ethernet module or the NB-IOT communication module after receiving an instruction of a cloud server, if the gateway unit data are the gateway unit data, the gateway unit processes the gateway unit data, the gateway unit analyzes the instruction of the cloud server, if the gateway unit data are the alarm value setting instruction, the set alarm value is stored again, and if the gateway unit data are the gateway MCU module firmware upgrading instruction, the gateway unit enters an upgrading state to wait for receiving the upgrading data until the upgrading is completed; if the data is the node unit data, the data is forwarded to the node unit through a second 433MHz wireless communication module of the gateway unit, the cloud server unit is in data communication with the gateway unit through a network, the cloud server unit stores the data, analyzes the data and provides Web visual services, water quality information and data comprehensive analysis results of each monitoring area are remotely checked in real time through Web, water quality data information is downloaded, the setting of an alarm value of the gateway unit is updated, the working state of the node unit equipment is controlled, when the firmware needs to be updated, the firmware can be placed on a server and then pushed to be updated to the gateway unit or the node unit.
The utility model has the advantages that:
the utility model adopts the free frequency range of 433MHz to carry out the data communication between the gateway and the node, has the networking function, can stably realize the remote communication, is easy to install compared with the traditional wired communication, and reduces the cost of installation and maintenance;
the gateway has the communication capacity of Ethernet and NB-IOT, and can select a corresponding communication mode to complete the communication between the gateway and the cloud server according to actual needs, so that the selectivity of a communication interface is enriched;
the device has the functions of local and remote Web real-time visual display of various parameters of water quality, and can control the working state of the equipment through local gateway keys or a remote browser;
fourthly, data can be stored, big data is analyzed, and firmware is upgraded and pushed through a server;
fifthly, the system has the functions of automatic acquisition of water quality parameters and local backup and storage, improves the acquisition efficiency and enhances the data storage capacity;
sixthly, the automatic alarm and automatic control functions are provided, when the water quality parameter is not in the set normal value range, the audible and visual alarm immediately gives an alarm and sends an instruction to perform emergency brake control processing on the control equipment;
firmware of the node MCU and the gateway MCU can be updated according to needs, remote repair can be performed in time aiming at the problems, and the stability of the system is improved;
eighthly, the equipment is small and flexible in design and convenient to install and deploy in a large scale;
ninth, can be widely applied to aquaculture, sewage treatment, water works, marine environment monitoring, agricultural water quality monitoring and the like, and has strong universality.
The device has the characteristics of real-time data interaction function, easiness in deployment and low cost.
Drawings
FIG. 1 is a schematic block diagram of an embodiment;
FIG. 2 is a schematic diagram of the working flow of the main program of the node MCU in the embodiment;
FIG. 3 is a schematic diagram of the working flow of the main program of the gateway MCU in the embodiment;
FIG. 4 is a schematic diagram illustrating operation of a cloud server according to an embodiment;
FIG. 5 is a schematic diagram of an embodiment of aquaculture.
Detailed Description
The contents of the present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
Example (b):
referring to fig. 1, a water quality parameter monitoring device comprises a group of water quality parameter acquisition node units, a data collection gateway unit and a cloud server unit which are connected together through a wireless network, wherein each water quality parameter acquisition node in the water quality parameter acquisition node units is provided with a node MCU module, a serial port-to-RS-485 module, a first 433MHz wireless communication module, a relay control module and a first power module which are connected with the node MCU module, and the serial port-to-RS-485 module is externally connected with a water quality sensor; the data collection gateway unit is provided with a gateway MCU module and a gateway setting key module connected with the gateway MCU module, a second 433MHz wireless communication module, a gateway data storage module, an Ethernet module, a second power supply module, an NB-IOT communication module, a serial port screen display module and an audible and visual alarm module, the cloud server is used for providing data storage and processing, Web display and parameter setting are provided, pushing of gateway and node firmware is achieved, each collection node is in wireless communication connection with the data collection gateway through the 433MHz wireless communication module, and the data collection gateway is in communication connection with the cloud server through the NB-IOT communication module or the Ethernet module.
The node MCU module is a new Tang high-speed 1T 8051 singlechip series product N76E003, the working frequency of an internal clock of the N76E003 chip can reach 16 MHz, the chip is provided with an 18 KB programmable Flash ROM, a configurable Data Flash and a high-capacity 1 KB SRAM, an online system is supported to update ISP and IAP, two flexibly configurable full-duplex multifunctional UARTs are arranged in the chip, the wide working voltage of 2.4V to 5.5V and the working temperature of-40 ℃ to 105 ℃ are supported, the chip has high anti-interference capability of 7KV ESD/4KV EFT, and the main functions are to finish Data reading detected by a water quality sensor by converting a serial port into an RS-485 module, finish transceiving gateway Data by a first 433MHz wireless communication module and a second 433MHz wireless communication module and finish working state control of equipment by a relay control module.
The serial port-to-RS-485 communication module is an SP3485EN-L/TR chip and a peripheral circuit thereof, is a universal low-power-consumption RS-485 communication conversion chip, has a communication rate of 10Mbps, and is compatible with various RS-485 sensor access nodes for data acquisition.
The water quality sensor is an RS-485 interface type water quality sensor, the RS-485 interface type water quality sensor can improve the compatibility of sensor access, and each monitoring node is allowed to select one or more corresponding water quality sensors to access according to actual conditions only after the firmware is slightly changed and updated on a control program.
The relay control module comprises a relay, and a triode and an optocoupler which are connected with the relay, the rated current of a relay contact is 10 amperes, the relay is driven and controlled by the triode, and IO control isolation is performed between the optocoupler and the node MCU module.
The first 433MHz wireless communication module and the second 433MHz wireless communication module are HC-12 wireless 433MHz serial port modules, programs are arranged in the HC-12 wireless 433MHz serial port modules, automatic networking can be achieved, transparent data transmission is supported, the communication distance can be adjusted to 1000m AT most, the air baud rate is 5000bps, the working mode and various parameters of the modules can be dynamically set through serial port AT instructions, and remote communication between the node MCU modules and the gateway MCU modules can be achieved through UART serial ports.
The gateway MCU module is STM32F103C8T6 of meaning semiconductor production, STM32F103C8T6 is a 32-bit microcontroller based on ARM Cortex-M kernel STM32 series, 72 MHz's operating frequency, 64 KB's programmable Flash memory and SRAM up to 20 KB, but built-in three nimble multi-functional UART of full duplex that disposes, two way SPI communication possesses DMA high-speed transmission, 12 ADC sampling, common peripheral hardware such as outside IO interrupt detection.
The gateway setting key module is provided with a node device selection key, a function setting key, an added value key, a reduced value key and a confirmation key, the node device selection key is used for selecting a corresponding node to be set with parameters, corresponding node IDs are displayed on the serial port screen every time, different nodes are selected according to the IDs, the function setting key is used for selecting a node alarm value to be set, and a node relay timed working time or emergency braking control device, the added value key and the reduced value key are used for adjusting the value of the corresponding setting function when the functions are set, the added value key and the reduced value key are increased or reduced every time when the value unit is pressed, the water quality parameters of different nodes can be displayed by turning up and down the pages on the serial port screen during normal use, and the confirmation key is used for setting and confirming after finishing.
The gateway data storage module is provided with a self-elastic SD card seat and an SD memory card, the gateway MCU module writes data of each node into the SD card through the SPI interface for storage, the SD card is used for storing the data, the data loss during network connection failure can be prevented, the data can be checked through a computer conveniently, and the gateway data storage module is used for analyzing the data and judging nodes with abnormal work so as to replace node equipment.
The Ethernet module is a W5500 module, integrates a full hardware TCP/IP protocol stack, does not need codes to realize the TCP/IP protocol stack, supports the transmission rate of 10/100Mbps, internally integrates a 32k TX/RX cache, and communicates with the gateway MCU module through an SPI interface.
The gateway NB-IOT communication module is a BC26 module, the BC26 module is a multi-band LTE Cat NB1/Cat NB2 wireless communication module with high performance and low power consumption, and the wireless communication module supports China Mobile OneNet/Andlink, China telecom IoT/AEP, Oceanconnect and Ali cloud Internet of things cloud platform, supports multi-band and rich external interfaces, and is embedded with a network service protocol stack, and is convenient to apply.
The gateway serial port screen is displayed as a USART HMI 3.5-inch resistance type touch serial port intelligent screen and is used for displaying node water quality parameter information and setting parameter display.
The acousto-optic warning module is provided with a buzzer and an LED which are interconnected, when the gateway judges that the water quality parameter value is not at a set normal value, the gateway sends out rapid warning sound and flashes rapidly with the red LED, if equipment needs emergency braking, the gateway can send an instruction to a corresponding node MCU through a second 433MHz wireless communication module, then the node MCU controls the relay module to be disconnected, so that the equipment can be braked emergently, the water quality parameter can be collected continuously without being influenced, and the warning is stopped until the data is recovered to be normal.
The cloud server adopts an Ali cloud server, the server is used for establishing a database to store, analyze and process data, and is provided with a Web server, the Web displays water quality parameter information to a user in real time, allows various parameters such as a water quality parameter alarm value to be set, and remotely controls the working state of equipment.
The first power module and the second power module both adopt AC-DC digital switching power RS-25-24|24V 1.1A and LM2596R-ADJ DC-DC voltage reduction chips, the AC-DC digital switching power is used for converting 220V alternating current voltage into 24V direct current, then the 24V direct current voltage is converted into direct current 12V and direct current 5V through LM2596R-ADJ respectively, wherein an external power supply interface is reserved in a node circuit for supplying power to the water quality sensor for the direct current 24V, the direct current 12V and the direct current 5V of the first power module, and the direct current 5V of the second power module is reduced by AMS117-3.3 to output 3.3V direct current voltage to supply power to the node MCU module, the gateway MCU module and other circuits.
The working process of the device comprises the following steps:
in the acquisition node unit, a first power supply module provides 24V and 12V direct-current power supplies for a water quality sensor, 5V is provided for a relay module and a first 433MHz wireless communication module, 3.3V power supplies are provided for a node MCU module and a serial port to 485 module, the node MCU module reads and sets data of the water quality sensor through the serial port to 485 module, the node MCU module analyzes the data according to a sensor protocol, reports the data to a gateway through the first 433M wireless communication module when receiving a query instruction sent by a second 433M wireless communication module of the gateway, analyzes other instructions from the gateway unit, controls the working state of the relay if controlling the relay instruction, enters an upgrading state if upgrading the firmware instruction and waits for receiving upgrading data until upgrading is completed, and the communication between the node unit and the gateway unit depends on the first power supply, And the second 433MHz wireless communication module. In the gateway unit, the gateway MCU module sends query instructions to each node at regular time through the second 433MHz wireless communication module, each node reports data to the gateway if the address ID in the instructions is consistent with the address stored by the node, otherwise, no processing is performed. The gateway identifies which node the data comes from through the address ID, then stores the data in a local SD card, compares the inquired data with a set alarm value, immediately sends a relay control command to the working state of corresponding node control equipment if the data is not in the set range, rearranges the data of all the node units according to a protocol after the gateway unit polls all the node units within a certain time, then actively sends the data to a cloud server through an Ethernet module or an NB-IOT communication module by using a network, the data of the node units can be displayed on a serial port screen on the gateway unit in real time, a gateway setting key module can set the alarm value and the on-off state of a relay of each node, and the gateway unit can judge whether the data of the gateway unit or the data of the node unit after receiving the command of the cloud server through the Ethernet module or the NB-IOT communication module, if the data is gateway unit data, processing the data in the gateway unit, analyzing the cloud server instruction by the gateway unit, if the data is an alarm value setting instruction, saving the set alarm value again, and if the data is an update gateway MCU module firmware instruction, entering an update state to wait for receiving update data until the update is completed; if the data is the node unit data, the data is forwarded to the node unit through a second 433MHz wireless communication module of the gateway unit, the cloud server unit is in data communication with the gateway unit through a network, the cloud server unit stores the data, analyzes the data and provides Web visual services, water quality information and data comprehensive analysis results of each monitoring area are remotely checked in real time through Web, water quality data information is downloaded, the setting of an alarm value of the gateway unit is updated, the working state of the node unit equipment is controlled, when the firmware needs to be updated, the firmware can be placed on a server and then pushed to be updated to the gateway unit or the node unit.
The working flow of the main program of the node MCU is shown in FIG. 2, the MCU and the related peripheral equipment are initialized firstly when the power is on, the program is ended when the initialization fails, the collected data of the water quality sensor is read if the initialization succeeds, and then whether the wireless communication data of the node 433M issued by the gateway unit is received or not is judged. If the data are received, analyzing the data, otherwise, continuously reading the collected data of the water quality sensor, if the data are a water quality parameter reading instruction, sending the water quality parameters to the gateway unit, if the data are a relay control instruction, controlling the on-off of the relay, if the data are an MCU firmware upgrading instruction, upgrading the MCU firmware until the upgrading is completed, and continuously reading the collected data of the water quality sensor after the processing of each event is completed.
The working flow of the main program of the gateway MCU is shown in FIG. 3, the MCU and relevant peripheral equipment are firstly initialized by electrifying, the program is ended if the initialization is failed, query instructions are sent to each node at regular time if the initialization is successful, then the polled data are locally stored and displayed, the data are sent to a server, meanwhile, the polled data are compared with a set and stored alarm value to determine whether to carry out sound-light alarm processing, if the alarm condition is reached, a sound-light alarm module is started to initiate alarm, and an instruction is issued to a corresponding node unit to emergently control the on-off of a relay. And then, the processing key module stores the alarm value if the key is the set alarm value, and issues an instruction to the corresponding node unit to emergently control the on-off of the relay if the key is the control relay. And then judging whether the data issued by the cloud server unit is received or not, if so, analyzing the data, otherwise, continuously sending query instructions to each node at regular time to obtain the water quality data. And if the received data is the gateway unit data or the node unit data, continuously judging the gateway unit data or the node unit data. If the data is the gateway unit data, the data is processed in the gateway unit, and if the data is the node unit data, the data is forwarded to the corresponding ID node unit through a second 433MHz wireless communication module of the gateway unit. And after the event processing is finished, continuously sending query instructions to each node at regular time.
The cloud server receives data reported by the gateway unit, stores and analyzes the data, associates the water quality data with Web, and enables a user to check and download all water quality parameter information in real time through a browser, and if the user wants to set the working state of the equipment, update an alarm value parameter, update a node unit or a gateway unit firmware, the cloud server sends the corresponding data to the gateway unit through a network and the corresponding data is processed by the gateway unit.
The implementation of this example in aquaculture is shown in fig. 5: the method comprises the steps of placing a node device in an area to be monitored for water quality, connecting a water quality sensor, setting alarm parameters according to a water quality environment of a corresponding place at a gateway, and then seeing water quality data of each node on a serial port display screen, wherein for example, when the concentration of oxygen on an area 1 monitoring node 1 is larger than 9mg/L, the alarm value is set to be smaller than 9mg/L, when the concentration of the oxygen is collected by the node 1 and is smaller than 9mg/L, an acousto-optic alarm gives an alarm and automatically sends an instruction to turn on oxygenation equipment, a corresponding Web is turned on by a browser at a place with a network, red is displayed at a corresponding curve and data on the Web to give an alarm, at the moment, other equipment working states can be set by the Web to deal with the alarm, and the working principles of the node 2, the node 3, the node 4 and the node 5 are.
Claims (10)
1. A water quality parameter monitoring device is characterized by comprising a group of water quality parameter acquisition node units, a data collection gateway unit and a cloud server unit which are connected together through a wireless network, wherein each water quality parameter acquisition node in each water quality parameter acquisition node unit is provided with a node MCU module, a serial port-to-RS-485 module, a first 433MHz wireless communication module, a relay control module and a first power module which are connected with the node MCU module, and the serial port-to-RS-485 module is externally connected with a water quality sensor; the data collection gateway unit is provided with a gateway MCU module and a gateway setting key module, a second 433MHz wireless communication module, a gateway data storage module, an Ethernet module, a second power supply module, an NB-IOT communication module, a serial port screen display module and an audible and visual alarm module which are connected with the gateway MCU module.
2. The water quality parameter monitoring device of claim 1, wherein the node MCU module is a New Tang high speed 1T 8051 singlechip series product N76E 003.
3. The water quality parameter monitoring device according to claim 1, wherein the serial port-to-RS-485 communication module is a SP3485EN-L/TR chip and a peripheral circuit thereof.
4. The water quality parameter monitoring device of claim 1, wherein the water quality sensor is an RS-485 interface type water quality sensor.
5. The water quality parameter monitoring device according to claim 1, wherein the relay control module comprises a relay, a triode and an optical coupler, the triode and the optical coupler are connected with the relay, the rated current of a contact of the relay is 10 amperes, the relay is driven and controlled by the triode, and IO control isolation is performed between the optical coupler and the node MCU module.
6. The water quality parameter monitoring device according to claim 1, wherein the first 433MHz wireless communication module and the second 433MHz wireless communication module are HC-12 wireless 433MHz serial modules.
7. The water quality parameter monitoring device of claim 1, wherein the gateway MCU module is STM32F103C8T6 of Italian semiconductor production.
8. The water quality parameter monitoring device according to claim 1, wherein the gateway setting key module is provided with a node device selection key, a function setting key, an increase value key, a decrease value key and an acknowledge key.
9. The water quality parameter monitoring device according to claim 1, wherein the gateway data storage module is provided with a self-eject SD card holder and an SD memory card.
10. The water quality parameter monitoring device of claim 1, wherein the NB-IOT communication module is a BC26 module.
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