Printing and dyeing wastewater reuse water quality monitoring device based on LabVIEW and ZigBee

Abstract

The utility model relates to the technical field of printing and dyeing wastewater reuse water quality monitoring devices, in particular to a printing and dyeing wastewater reuse water quality monitoring device based on LabVIEW and ZigBee, which comprises a sensing device, an intelligent gateway, an intelligent controller, an execution device and a cloud application, the sensing equipment is arranged in the water quality monitoring pool and comprises a water quality detection sensor; the intelligent gateway comprises a ZigBee wireless sensing network node and a ZigBee coordinator, and the ZigBee wireless sensing network node receives information of the water quality monitoring sensor and sends the information to the intelligent controller through the ZigBee coordinator; the intelligent controller is in two-way communication with the execution device and the cloud application, the cloud application comprises a monitoring center and a cloud platform, and the intelligent controller is in two-way communication with the monitoring center and sends data to the mobile phone terminal through the GSM module; and bidirectional communication with a cloud platform is realized through an ESP8266 module. The device can accurately and timely monitor water quality information of printing and dyeing wastewater reuse, and prevents reuse damage caused by water quality pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring devices for the quality of recycled printing and dyeing wastewater, in particular to a monitoring device for the quality of recycled printing and dyeing wastewater based on LabVIEW and ZigBee. Background Technique

[0002] The reuse of printing and dyeing wastewater refers to the process of treating the wastewater generated in the printing and dyeing process to meet certain water quality standards and then reusing it for printing and dyeing production or other industrial uses. This approach not only helps to conserve water resources but also reduces environmental pollution caused by wastewater discharge.

[0003] Generally speaking, the water quality for reuse in printing and dyeing production needs to meet the following requirements: Chromaticity: low chromaticity or colorless to avoid affecting the quality of printing and dyeing products; Suspended solids: low content to reduce wear and blockage of printing and dyeing equipment; Organic matter: low concentration to avoid adverse effects on the printing and dyeing process; pH value: moderate to meet the requirements of the printing and dyeing process; Other indicators: Pollutants such as heavy metals and bacteria also need to be controlled within a certain range.

[0004] Although the reuse of printing and dyeing wastewater has many advantages, there are still some defects in the existing water quality monitoring system, mainly manifested in the following aspects: The monitoring indicators are not comprehensive, and the current water quality monitoring indicators may not be able to fully reflect the types and concentrations of all pollutants in the wastewater; The monitoring frequency is insufficient. Due to the large fluctuations in the water quality of printing and dyeing wastewater, the existing monitoring frequency may not be able to timely reflect the water quality changes, which may lead to the risk of exceeding the water quality standard during the process of wastewater reuse; The monitoring technology is backward. Some printing and dyeing enterprises may still use traditional water quality monitoring technologies, which may have problems such as low accuracy and complex operation; The uploading and storage of monitoring data are not timely enough, resulting in difficulties in remotely retrieving data. Content of the Utility Model

[0005] In order to overcome the existing deficiencies, the utility model provides a monitoring device for the quality of recycled printing and dyeing wastewater based on LabVIEW and ZigBee.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A water quality monitoring device for recycled printing and dyeing wastewater based on LabVIEW and ZigBee, which includes a sensing device, an intelligent gateway, an intelligent controller, an execution device, and a cloud application; the sensing device is arranged in the water quality monitoring pool and includes water quality detection sensors; the intelligent gateway includes ZigBee wireless sensor network nodes and a ZigBee coordinator. The ZigBee wireless sensor network nodes receive the information of the water quality monitoring sensors and send it to the intelligent controller through the ZigBee coordinator; the intelligent controller communicates bidirectionally with the execution device and the cloud application. Among them, the cloud application includes a monitoring center and a cloud platform. The intelligent controller communicates bidirectionally with the monitoring center cloud platform, and the monitoring center is sent to the mobile terminal through the GSM module; the intelligent controller communicates bidirectionally with the cloud platform through the ESP8266 module; the execution device includes several groups of solenoid valves and water pumps, which are arranged in the water pipes at the bottom of the water quality monitoring pool, and each water pipe is provided with a group of solenoid valves and a group of water pumps; the water quality detection sensors include a COD analyzer, a BOD analyzer, a suspended solid analyzer, a pH sensor, a turbidity sensor, and a TDS sensor.

[0007] According to another embodiment of the present utility model, it further includes that the monitoring center is a host computer monitoring system based on LabVIEW, which is composed of four parts: a user system module, a data acquisition module, a data processing module, and an early warning system module. Among them, the system conducts login management through the user system module, receives the data output by the intelligent controller through the data acquisition module, stores and displays the data parameters through the data processing module, and starts the early warning system module according to the settings. The early warning system module is sent to the mobile terminal through the GSM module.

[0008] According to another embodiment of the present utility model, it further includes that the pH sensor selects a general E-201 pH composite electrode; the turbidity sensor selects a TSW-30 sensor; the TDS sensor uses a TDS probe to collect the total dissolved solids parameter of the solution.

[0009] According to another embodiment of the present utility model, it further includes that the ZigBee wireless sensor network node is composed of a sensing module, a data processing module, a communication module, and a power supply. The sensing module is connected to the sensing device, collects the information at the terminal node, is connected to the data processing module for processing, and is sent to the ZigBee coordinator through the wireless radio frequency circuit of the communication module; the power supply supplies power to the sensing module, the data processing module, and the communication module.

[0010] According to another embodiment of the present utility model, it further includes that the intelligent controller uploads and sends data to the mobile OneNET cloud platform through the ESP8266 networking module, and the cloud platform communicates with the ESP8266 module through the MQTT protocol.

[0011] According to another embodiment of the present utility model, it further includes that the cloud platform communicates bidirectionally with the computer Web and the mobile phone terminal.

[0012] According to another embodiment of the present utility model, it further includes that several groups of water pipes are provided at the bottom of the water quality monitoring pool, and the water pipes are respectively communicated with the reaction pool, the sedimentation pool, the aerobic pool, the secondary sedimentation pool, and the recycled water pool.

[0013] The beneficial effects of the present utility model are as follows: The research and design of the water quality multi-parameter online monitoring system based on ZigBee and LabVIEW technologies use a wireless sensor network for data transmission, a LabVIEW host computer program for data monitoring, a GSM module for SMS warning, etc., effectively solving the disadvantages of traditional water quality detection such as long distance, high material and labor costs, time-consuming, untimely feedback operation and water quality monitoring; ZigBee, as a transmission terminal, has stable signals, long transmission distance, low power consumption, and has good economic benefits; the LabVIEW host computer program uses a visual image interface, which can objectively display the relevant situation of the current water quality to users; the GSM module provides a SMS warning function for users, integrates it into the system as a whole to form a complex and orderly wireless sensor network, and cooperates with the cloud platform to realize synchronous viewing and control of on-site equipment on the computer Web side, mobile phone APP and small program, and they do not conflict with each other, making the operation more convenient. Description of the Drawings

[0014] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the specific structural diagram of the system of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the monitoring center;

[0018] Figure 4 is the structural schematic diagram of the sensor network node. Detailed Embodiment

[0019] Such as Figure 1It is a structural schematic diagram of the present utility model. A water quality monitoring device for recycled printing and dyeing wastewater based on LabVIEW and ZigBee includes a sensing device, an intelligent gateway, an intelligent controller, an execution device, and a cloud application. The sensing device is arranged in the water quality monitoring pool and includes water quality detection sensors. The intelligent gateway includes ZigBee wireless sensor network nodes and a ZigBee coordinator. The ZigBee wireless sensor network nodes receive the information of the water quality monitoring sensors and send it to the intelligent controller through the ZigBee coordinator. The intelligent controller communicates bidirectionally with the execution device and the cloud application. Among them, the cloud application includes a monitoring center and a cloud platform. The intelligent controller communicates bidirectionally with the monitoring center cloud platform. The monitoring center is sent to the mobile terminal through the GSM module. The intelligent controller communicates bidirectionally with the cloud platform through the ESP8266 module. The execution device includes several groups of solenoid valves and water pumps, which are arranged in the water pipes at the bottom of the water quality monitoring pool. Each water pipe is provided with a group of solenoid valves and a group of water pumps. The water quality detection sensors include a COD analyzer, a BOD analyzer, a suspended solids analyzer, a pH sensor, a turbidity sensor, and a TDS sensor.

[0020] Specifically, ZigBee wireless sensor network technology is used for data collection and data transmission in the monitoring pool. The upper computer monitoring center is developed by LabVIEW, which can realize the collection, transmission, analysis, real-time display, storage, and historical echo of water quality parameter data, and can monitor the water quality status in real time. Once abnormal water quality conditions are found, early warning reminders will be sent to the upper computer monitoring center and the user's mobile phone, so that the staff can handle it in time to solve the use safety problem caused by the reuse of polluted water. The data is also processed and analyzed by the intelligent controller. According to the results set by the program, the unqualified printing and dyeing wastewater is selected to re-enter the treatment pool for treatment according to the information of the data. At the same time, the intelligent controller transmits the information to the cloud platform, which is equivalent to dual storage and control of local and cloud, with double guarantees. When one of the networks fails, the other is enabled. The sensing device and the execution device are respectively provided with several groups, and each group has an independent loop line, which can facilitate the simultaneous monitoring and control of multiple groups of printing and dyeing wastewater.

[0021] According to another embodiment of the present utility model, it further includes that the monitoring center is an upper computer monitoring system based on LabVIEW, which is composed of four parts: a user system module, a data collection module, a data processing module, and an early warning system module. Among them, the system conducts login management through the user system module, receives the data output by the intelligent controller through the data collection module, stores and displays the data parameters through the data processing module, and starts the early warning system module according to the settings. The early warning system module is sent to the mobile terminal through the GSM module.

[0022] Specifically, the user system module has a permission setting function to improve the security of the monitoring platform. Users with permissions can enter the monitoring system and manage users. The data acquisition module extracts and converts the data transmitted from the ZigBee wireless sensor network to the host computer through the serial port. The data processing module processes the extracted and converted data, displays it in real time, and stores it. The warning system module sets corresponding alarm thresholds according to the water quality monitoring requirements of the ZigBee wireless sensor network monitoring area, and issues an alarm when the threshold is exceeded. Among them, with the continuous improvement of the GSM communication network, short messages have gradually been applied to industrial control, environmental monitoring and other fields due to their characteristics such as wide coverage area, fast speed, high efficiency, accuracy, low cost, and little impact by the environment. Especially in the field of distributed remote data acquisition and monitoring, the status of on-site terminal devices can be received at any time and anywhere through the GSM module in the form of short messages, which is convenient for centralized management and remote management. The system does not need to establish a dedicated network and can directly use the China Mobile communication network to achieve real-time data transmission. Therefore, the remote monitoring access of this design can connect the PC and the mobile phone through the GSM communication module, which is convenient for using the mobile phone to view the water quality situation in real time at a long distance.

[0023] According to another embodiment of the present invention, it further includes that the pH sensor selects a general-purpose E-201 pH composite electrode; the turbidity sensor selects a TSW-30 sensor; the TDS sensor uses a TDS probe to collect the total amount of dissolved solids parameter in the solution.

[0024] Specifically, the pH sensor electrode is composed of a pH glass electrode and a silver-silver chloride reference electrode. When the electrode is immersed in the solution to be measured, two hydrated gel layers are formed near the glass film. When measuring the pH, an ion exchange between the solutions on both sides of the glass membrane forms a relatively stable potential difference. As the ion exchange stabilizes, the magnitude of the potential difference tends to a fixed value, that is, the output voltage. The output voltage of the pH electrode is in the millivolt range. The composite electrode supporting module is equipped with a TLC4502 automatic calibration operational amplifier to amplify the millivolt-level voltage signal of the pH electrode. At the same time, it is equipped with a magnification adjustment potentiometer. Rotating it clockwise can increase the magnification, and vice versa to decrease the magnification. The output voltage range of the pH module is 0 - 5V; the infrared pair tube inside the turbidity sensor emits light, which passes through the solution to be measured. The turbidity of the water body affects the transmission and scattering of light. Its turbidity is inversely proportional to the light transmission amount, inversely proportional to the ratio of scattered light to transmitted light, and inversely proportional to the magnitude of the current converted by the light receiving end. The current signal output by the light receiving end of the TSW-30 sensor passes through the module resistor, and after sampling and processing, a voltage signal of 0 - 4.5V is obtained. The single-chip microcomputer can then acquire information through the ADC and convert it through a formula to obtain the turbidity value of the current water sample; the TDS sensor uses a TDS probe to collect the total dissolved solids parameter of the solution. After applying a voltage between the two probe electrodes, positively charged ions (such as Na+, Ca2+, Mg2+, K+, etc.) move towards the negative charge direction, and negatively charged ions (such as Cl-, SO42-, HCO3-, etc.) move towards the positive charge direction. By detecting the current generated by the ion movement, the TDS value of the solution to be measured is determined.

[0025] According to another embodiment of the present invention, it further includes that the ZigBee wireless sensor network node consists of four parts: a sensing module, a data processing module, a communication module, and a power supply. The sensing module is connected to the sensing device to collect information at the terminal node, and is connected to the data processing module for processing, and is sent to the ZigBee coordinator through the wireless radio frequency circuit of the communication module; the power supply supplies power to the sensing module, the data processing module, and the communication module.

[0026] According to another embodiment of the present invention, it further includes that the intelligent controller uploads and sends to the mobile OneNET cloud platform through the ESP8266 networking module, and the cloud platform communicates with the ESP8266 module through the MQTT protocol.

[0027] According to another embodiment of the present invention, it further includes that the cloud platform communicates bidirectionally with the computer Web and the mobile phone terminal.

[0028] According to another embodiment of the present invention, it further includes that several groups of water pipes are provided at the bottom of the water quality monitoring pool, and the water pipes are respectively connected to the reaction pool, the sedimentation pool, the aerobic pool, the secondary sedimentation pool, and the recycled water pool.

[0029] In the specific operation process, a perception device is used to monitor the liquid in the water quality monitoring pool in multiple dimensions and aspects. The detected data is transmitted to the intelligent controller through the intelligent gateway. The intelligent controller analyzes and processes the data information. After the analysis and processing, the unqualified wastewater is reprocessed through the driving execution device. The processing information is sent to the mobile terminal and the cloud platform through the GSM module and the ESP8266 module respectively, facilitating query and storage.

[0030] The above description is illustrative rather than restrictive to the present utility model. Those of ordinary skill in the art understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all of them will fall within the protection scope of the present utility model.

Claims

1. A water quality monitoring device for dyeing wastewater reuse based on LabVIEW and ZigBee, characterized in that: It includes sensing equipment, intelligent gateway, intelligent controller, execution equipment and cloud application; the sensing equipment is arranged in the water quality monitoring pool and includes water quality detection sensor; the intelligent gateway includes ZigBee wireless sensor network node and ZigBee coordinator, the ZigBee wireless sensor network node receives the information of water quality monitoring sensor and sends it to the intelligent controller through the ZigBee coordinator; the intelligent controller communicates with the execution equipment and cloud application in two-way, wherein the cloud application includes a monitoring center and a cloud platform, the intelligent controller communicates with the monitoring center and the cloud platform in two-way, and the monitoring center sends to the mobile phone terminal through the GSM module; the intelligent controller communicates with the cloud platform in two-way through the ESP8266 module; the execution equipment includes several groups of solenoid valves and water pumps, which are arranged in the water pipes at the bottom of the water quality monitoring pool, and each water pipe is provided with a group of solenoid valves and a group of water pumps; the water quality detection sensor includes a COD meter, a BOD meter, a suspended matter meter, a pH sensor, a turbidity sensor and a TDS sensor.

2. The water quality monitoring device for dyeing wastewater reuse based on LabVIEW and ZigBee according to claim 1 is characterized in that: The monitoring center is a host computer monitoring system based on LabVIEW, which consists of four parts: user system module, data acquisition module, data processing module and early warning system module. The system performs login management through the user system module, receives data output by the intelligent controller through the data acquisition module, stores and displays data parameters through the data processing module, starts the early warning system module according to the settings, and sends it to the mobile phone terminal through the GSM module.

3. The water quality monitoring device for dyeing wastewater reuse based on LabVIEW and ZigBee according to claim 1, characterized in that: The pH sensor uses the universal E-201 pH composite electrode; the turbidity sensor uses the TSW-30 sensor; and the TDS sensor uses a TDS probe to collect the total dissolved solids parameters of the solution.

4. The water quality monitoring device for dyeing wastewater reuse based on LabVIEW and ZigBee according to claim 1 is characterized in that: The ZigBee wireless sensor network node consists of four parts: a perception module, a data processing module, a communication module and a power supply. The perception module is connected to the perception device to collect information at the terminal node, connected to the data processing module for processing, and sent to the ZigBee coordinator through the wireless radio frequency circuit of the communication module; the power supply supplies power to the perception module, the data processing module and the communication module.

5. The water quality monitoring device for dyeing wastewater reuse based on LabVIEW and ZigBee according to claim 1 is characterized in that: The intelligent controller is uploaded to the mobile OneNET cloud platform through the ESP8266 networking module, and the cloud platform and the ESP8266 module communicate through the MQTT protocol.

6. The water quality monitoring device for dyeing wastewater reuse based on LabVIEW and ZigBee according to claim 2 is characterized in that: The cloud platform communicates bidirectionally with computer Web and mobile phone terminals.

7. The device for monitoring the reuse water quality of printing and dyeing wastewater based on LabVIEW and ZigBee according to claim 1 is characterized in that: A plurality of water pipes are arranged at the bottom of the water quality monitoring pool, and the water pipes are respectively connected with the reaction pool, the sedimentation pool, the aerobic pool, the secondary sedimentation pool, and the recycled water pool.

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