Secondary water supply side water quality on-line monitoring system based on RF (Radio Frequency) technology

Abstract

The invention discloses a secondary water supply side water quality on-line monitoring system based on an RF radio frequency technology, and relates to the field of water quality monitoring, the system comprises a water quality detector, a wireless collector and a heat exchange station PLC control system; the water quality detectors are arranged at a plurality of positions of a sampling area and are used for collecting water quality data; the wireless collector adopts an RF (Radio Frequency) technology, comprises an RF interface and an RS485 interface, performs wireless data interaction with the water quality detector through the RF interface, and is connected with the heat exchange station PLC control system through the RS485 interface; and the wireless collector is used for receiving the water quality data sent by the water quality detector and forwarding the water quality data to the heat exchange station PLC control system for real-time monitoring. Real-time collection and transmission of water quality data are achieved through the wireless technology, and the efficiency and accuracy of water quality monitoring are greatly improved.

Description

Technical Field

[0001] The present application relates to the field of water quality monitoring, and in particular to an online water quality monitoring system for a secondary water supply side based on RF radio frequency technology. Background Art

[0002] Water quality monitoring is an important means to protect public health and environmental safety. Secondary water supply refers to the process of pressurizing and distributing water by secondary water supply facilities such as high-level water tanks or pools after centralized water supply. It is usually used in high-rise buildings, residential areas and other places. Since secondary water supply is easily polluted after storage and transportation, real-time monitoring is crucial. The main reasons include: (1) Ensuring water quality safety. The secondary water supply system has a direct impact on public health in terms of water quality preservation and treatment, especially in the case of bacterial growth and heavy metal pollution. Timely monitoring of water quality can effectively prevent water pollution accidents; (2) Responding to emergencies. For sudden water pollution incidents, online monitoring can achieve real-time early warning, helping management departments to quickly take countermeasures and reduce damage.

[0003] Traditional water quality monitoring mostly relies on manual sampling and laboratory analysis. Laboratory analysis usually requires a certain amount of sampling and analysis time, which makes it impossible to achieve real-time monitoring, thereby delaying the discovery and response of problems. Manual sampling requires the dispatch of special personnel for sampling and testing, which increases labor costs and management difficulties. Sampling and testing often cannot cover all water sources and may miss water quality changes in certain key areas. Summary of the invention

[0004] The purpose of this application is to provide an online water quality monitoring system for the secondary water supply side based on RF radio frequency technology, which realizes real-time collection and transmission of water quality data through wireless technology, greatly improving the efficiency and accuracy of water quality monitoring.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] An online water quality monitoring system for the secondary water supply side based on RF radio frequency technology, including: a water quality detector, a wireless collector and a heat exchange station PLC control system;

[0007] The water quality detector is arranged at multiple locations in the sampling area for collecting water quality data;

[0008] The wireless collector uses RF radio frequency technology, and includes an RF interface and an RS485 interface. The wireless collector interacts with the water quality detector via the RF interface for wireless data, and is connected to the heat exchange station PLC control system via the RS485 interface.

[0009] The wireless collector is used to receive the water quality data sent by the water quality detector, and forward the water quality data to the heat exchange station PLC control system for real-time monitoring.

[0010] Optionally, the water quality detector is used to collect water quality data at different water levels in the sampling area, and the water levels include a high zone, a middle zone and a low zone.

[0011] Optionally, the water quality detector comprises:

[0012] A water sample collection device, used to collect water samples in the sampling area;

[0013] A water quality sensor unit, connected to the water sample collection device, for collecting water quality data of the water sample;

[0014] A collection control module, connected to the water sample collection device and the water quality sensor unit, and used to control the collection frequency and collection mode of the water sample collection device and the water quality sensor unit;

[0015] The relay is connected to the acquisition control module and is used for switching according to the control of the acquisition control module.

[0016] Optionally, the water sample collection device and the water quality sensor unit are connected by wire.

[0017] Optionally, the water sample collection device and the collection control module are connected by wire.

[0018] Optionally, the water quality sensor unit:

[0019] PH sensor, used to collect the PH value of water samples;

[0020] Dissolved oxygen sensor, used to collect dissolved oxygen in water samples;

[0021] Turbidity sensor, used to collect turbidity of water samples;

[0022] Conductivity sensor, used to collect the conductivity of water samples;

[0023] Hardness sensor, used to collect the hardness of water samples.

[0024] Optionally, the water sample collection device includes a flow regulator, a pressure reducing valve and a solenoid valve.

[0025] Optionally, the wireless frequency of the wireless concentrator is 480Mhz.

[0026] Optionally, the heat exchange station PLC control system acquires water quality data in real time through a standard MODBUS RTU protocol.

[0027] Optionally, in the MODBUS RTU protocol, the heat exchange station PLC control system initiates a communication request as a master station, and the wireless collector responds to the request as a slave station.

[0028] According to the specific embodiments provided in this application, this application has the following technical effects:

[0029] The present application provides an online water quality monitoring system for the secondary water supply side based on RF radio frequency technology. By setting water quality detectors at multiple locations in the sampling area, it can ensure that the water quality of water samples at all key locations can be detected. The wireless collector uses RF radio frequency technology to transmit water quality data to the heat exchange station PLC control system through wireless technology. Monitoring personnel can view water quality data in real time at a place far away from the water quality monitoring point, which improves the flexibility and efficiency of monitoring and realizes real-time and accurate monitoring of water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the functional modules of a secondary water supply side water quality online monitoring system based on RF radio frequency technology provided in an embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of the structure of a water quality detector;

[0033] Figure 3 A schematic diagram of the working process of an online water quality monitoring system for the secondary water supply side based on RF radio frequency technology provided in one embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of the monitoring interface. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] RF radio frequency technology is a technology that uses electromagnetic waves to transmit information within the radio frequency range. It is widely used in many fields such as communications, sensors, remote control, positioning, etc. RF radio frequency technology generally involves a frequency range from 3kHz to 300GHz. Different frequencies are suitable for different application scenarios. For example, low frequencies are used for long-distance communications, while high frequencies are suitable for high-speed data transmission. RF signals can be transmitted through a variety of modulation methods, including amplitude modulation (AM), frequency modulation (FM) and phase modulation (PM). The choice of modulation technology will affect the transmission quality and anti-interference ability of the signal. The present application provides an online water quality monitoring system for the secondary water supply side based on RF radio frequency technology, which closely combines modern technology with water supply management and provides reliable technical guarantees for water quality safety. Through real-time, efficient and intelligent monitoring methods, the level of water quality management can be effectively improved to ensure the health and safety of the public.

[0037] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] In an exemplary embodiment, Figure 1 As shown, a secondary water supply side water quality online monitoring system based on RF radio frequency technology is provided, including a water quality detector 1, a wireless collector 2 and a heat exchange station PLC control system 3.

[0039] The water quality detector 1 is arranged at multiple locations in the sampling area to collect water quality data.

[0040] The water quality detector 1 needs to be installed in all key locations to ensure that all key water quality data are covered. After determining the collection area, the water quality detector 1 will collect water samples at different water levels in the sampling area and collect water quality data, which are divided into high area, middle area and low area.

[0041] In a specific embodiment, Figure 2 As shown, the water quality detector 1 includes: a water sample collection device, a water quality sensor unit, a collection control module and a relay.

[0042] The water sample collection device is used to collect water samples in the sampling area for testing.

[0043] The water sample collection device includes a flow regulator, a pressure reducing valve, a solenoid valve, etc., which are used to collect and store water samples. Water samples at different water levels enter the solenoid valve and the pressure reducing valve respectively. The solenoid valve is a valve that uses electromagnetic force to control the flow of fluid. It can realize the automatic switching of the fluid through the control of electrical signals and is widely used in automatic control systems. The main function of the pressure reducing valve is to reduce the high-pressure fluid to the required low pressure to protect downstream equipment and pipeline systems. It can maintain a stable output pressure to ensure the safe operation of the system and the correct collection of water samples.

[0044] The water quality sensor unit is connected to the water sample collection device and is used to collect water quality data of the water sample.

[0045] The water quality sensor unit includes multiple sensors, which are pH sensor, dissolved oxygen sensor, turbidity sensor, conductivity sensor and hardness sensor, which are used to detect parameters such as pH value, dissolved oxygen, turbidity, conductivity and hardness respectively.

[0046] The water quality sensor unit and the water sample collection device are connected by wire to ensure stable signal transmission.

[0047] The collection control module is connected to the water sample collection device and the water quality sensor unit, and is used to control the collection frequency and collection mode of the water sample collection device and the water quality sensor unit.

[0048] The acquisition control module is the logical unit of the system, responsible for regulating the valve, acquisition frequency and acquisition method. It is also connected to the water quality sensor unit and the water sample collection device by wire.

[0049] The relay is connected to the acquisition control module and is used for switching according to the control of the acquisition control module.

[0050] A relay is a switching device used to control a circuit, usually a low-voltage circuit controls a high-voltage circuit. In this application, the relay is used to control the water sample collection process, such as opening or closing a solenoid valve to achieve automatic sampling.

[0051] Wireless concentrator 2 uses RF technology with a wireless frequency of 480Mhz. Wireless concentrator 2 is deployed at appropriate locations to ensure that wireless signals cover all monitoring points.

[0052] The frequency of 480MHz is relatively low and has good penetration ability. It can effectively penetrate the water surface and other obstacles to ensure stable signal transmission. In some areas, the use of 480MHz frequency may face less interference, especially in environments outside the industrial frequency band. The wireless collector 2 can collect water quality data in real time and transmit the water quality data to the heat exchange station PLC control system 3 through RF signals. Through wireless technology, monitoring personnel can view water quality data in real time at a place far away from the water quality monitoring point, which improves the flexibility and efficiency of monitoring. With the development of technology, higher frequency RF technology may be introduced in the future to improve data transmission rate and stability. Combined with the Internet of Things technology, a more intelligent water quality monitoring system, automated data analysis and alarm functions can be realized. Therefore, the wireless collector 2 using the 480MHz frequency has important application value and broad prospects in water quality monitoring.

[0053] The wireless collector 2 is configured with two main interfaces: an RF interface and an RS485 interface. The wireless collector 2 interacts with the water quality detector 1 via the RF interface for wireless data, and the wireless collector 2 is connected to the heat exchange station PLC control system 3 via the RS485 interface. The RS485 interface is a serial communication interface widely used in industrial automation, supporting long-distance and multi-device communication.

[0054] MODBUS is a widely used industry standard for communication in industrial control systems. It enables data exchange between different devices to be convenient. The heat exchange station PLC control system obtains water quality data in real time through the standard MODBUS RTU protocol. In the MODBUS RTU protocol, the heat exchange station PLC control system 3 initiates communication requests as the master station, and the wireless collector 2 responds to the request as the slave station.

[0055] The working process of the online water quality monitoring system for the secondary water supply side based on RF radio frequency technology provided in this application is as follows: Figure 3 As shown:

[0056] The water quality detector is an online real-time detection device. The device extracts water quality data once an hour by default. The specific start time of extraction is set by the user. When the time reaches the user-specified time, the collector in the acquisition control module controls the relay to open the solenoid valves in different areas in turn. Each area closes automatically according to the preset time. The whole process does not require manual intervention. The collector detects various types of water quality data in different areas in real time, and performs real-time classification, cleaning, and record storage.

[0057] The data is stored locally. At the same time, the heat exchange station PLC control system can collect wireless data through the wireless collector.

[0058] Figure 4 It is the water quality monitoring interface, where the monitoring data display includes monitoring data, unit water quality, water quality curve, historical data and parameter settings. Real-time data update display, dynamic display of solubility, turbidity, pH value, etc. of each sampling point to ensure data immediacy. Water quality curve analysis shows the trend of parameters such as conductivity and hardness to assist decision-making. Historical data will be stored every half an hour to facilitate the tracing and comparative analysis of historical status. The parameter setting function supports time synchronization and manual automatic sampling switching, one-click setting of system time, and flexible adjustment of sampling mode.

[0059] The online water quality monitoring system for the secondary water supply side based on RF radio frequency technology provided in this application can realize real-time and accurate monitoring of water quality, and transmit data to the PLC control system of the heat exchange station through wireless technology, providing support for water quality management and decision-making.

[0060] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An online water quality monitoring system for secondary water supply side based on RF radio frequency technology, characterized in that: include: Water quality detector, wireless collector and heat exchange station PLC control system; The water quality detector is arranged at multiple locations in the sampling area for collecting water quality data; The wireless collector uses RF radio frequency technology, and includes an RF interface and an RS485 interface. The wireless collector interacts with the water quality detector via the RF interface for wireless data, and is connected to the heat exchange station PLC control system via the RS485 interface. The wireless collector is used to receive the water quality data sent by the water quality detector, and forward the water quality data to the heat exchange station PLC control system for real-time monitoring.

2. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 1 is characterized in that: The water quality detector is used to collect water quality data at different water levels in the sampling area, and the water levels include a high area, a middle area, and a low area.

3. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 1 is characterized in that: The water quality detector comprises: A water sample collection device, used to collect water samples in the sampling area; A water quality sensor unit, connected to the water sample collection device, for collecting water quality data of the water sample; A collection control module, connected to the water sample collection device and the water quality sensor unit, and used to control the collection frequency and collection mode of the water sample collection device and the water quality sensor unit; The relay is connected to the acquisition control module and is used for switching according to the control of the acquisition control module.

4. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 3 is characterized in that: The water sample collection device and the water quality sensor unit are connected via wires.

5. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 3 is characterized in that: The water sample collection device and the collection control module are connected via wire.

6. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 3 is characterized in that: The water quality sensor unit: PH sensor, used to collect the PH value of water samples; Dissolved oxygen sensor, used to collect dissolved oxygen in water samples; Turbidity sensor, used to collect turbidity of water samples; Conductivity sensor, used to collect the conductivity of water samples; Hardness sensor, used to collect the hardness of water samples.

7. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 3 is characterized in that: The water sample collection device includes a flow regulator, a pressure reducing valve and a solenoid valve.

8. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 1 is characterized in that: The wireless frequency of the wireless concentrator is 480Mhz.

9. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 1 is characterized in that: The heat exchange station PLC control system acquires water quality data in real time through the standard MODBUS RTU protocol.

10. The online water quality monitoring system for secondary water supply side based on RF radio frequency technology according to claim 9 is characterized in that: In the MODBUS RTU protocol, the heat exchange station PLC control system initiates a communication request as a master station, and the wireless collector responds to the request as a slave station.

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