Heating water quality automatic detection system and method

Abstract

The invention discloses a heat supply water quality automatic detection system and method, and relates to the technical field of water quality monitoring. The system comprises a sensor acquisition cabin which is integrated with a PH sensor and a hardness sensor and is internally provided with a signal conditioning and AD conversion module, and the sensor acquisition cabin is connected with a PLC through an RS485 network to transmit digital signals; the upper computer receives the data and carries out dynamic display, storage and threshold alarm; and the cloud platform receives data through the wireless transmission unit to realize remote monitoring and analysis. According to the invention, the problems of low efficiency, data isolation and response lag of traditional manual detection are effectively solved, real-time, accurate and automatic monitoring and intelligent early warning of multiple parameters of water quality are realized, and the operation reliability and the operation and maintenance efficiency of a heat supply system are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of water quality monitoring technology, and more specifically to an automatic system and method for detecting the quality of hot water supply. Background Technology

[0002] Currently, with the continuous expansion of the heating business and the increasingly dispersed distribution of projects, the industry still mainly adopts the traditional manual water quality testing mode. This mode relies on professionally certified personnel to carry out on-site sampling and laboratory analysis. The test data is recorded and archived in paper form, and the equipment operating status also needs to be confirmed through manual inspection.

[0003] However, the traditional manual water quality testing mode has significant drawbacks: First, it suffers from a prominent efficiency bottleneck, with manual testing cycles typically lasting 4-6 hours, making it difficult to meet the demands of high-frequency, real-time water quality monitoring; second, it suffers from inadequate data management, as paper records not only struggle to achieve efficient archiving and analysis but are also prone to data distortion due to operational errors, failing to meet the requirements of standardized quality traceability; and third, it has a low level of intelligence, with testing equipment lacking a fault warning mechanism, resulting in delayed responses when water quality anomalies occur, which can easily affect heating safety. At the same time, the manual inspection mode also leads to high operation and maintenance costs.

[0004] Therefore, how to propose an automatic water supply quality detection system and method to overcome the problems of low efficiency, non-standard data management, insufficient intelligence and high operation and maintenance costs of traditional manual water quality detection mode, and to achieve real-time accurate monitoring, intelligent early warning, data compliance traceability and remote efficient operation and maintenance of water supply quality, is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an automatic hot water quality detection system and method, which realizes real-time monitoring, intelligent alarm and remote management of heating water quality by integrating multiple water quality sensors, building an industrial communication network, developing host computer software and cloud platform.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, this invention discloses an automatic hot water quality detection system, comprising: The sensor acquisition module includes an integrated sensor compartment, which integrates a pH sensor and a hardness sensor, and also includes a built-in power supply module, a signal conditioning circuit, and an AD conversion module. The signal conditioning circuit conditions the analog signals output by each sensor and converts them into standard electrical signals, and the AD conversion module converts the conditioned standard electrical signals into digital signals. The data acquisition and transmission module includes a PLC and an RS485 communication network. The PLC is connected to the sensor acquisition module through the RS485 communication network and acquires the digital signals according to the Modbus RTU protocol. The data processing and monitoring module includes a host computer that is communicatively connected to the PLC. The host computer is used to receive, display, and store water quality data, and is configured to trigger an alarm when the water quality data exceeds a preset threshold. The cloud management module includes a cloud platform. The host computer communicates with the cloud platform through a built-in wireless transmission unit to upload water quality data to the cloud platform for remote monitoring and analysis.

[0007] Preferably, the integrated sensor compartment integrates a power supply module, a signal conditioning circuit, and an AD conversion module via a customized PCB board.

[0008] Preferably, the host computer in the data processing and monitoring module is further configured as follows: Receive and store water quality data from the PLC; A graphical human-machine interface is provided, which is used to synchronously display real-time data and historical trends of pH value and hardness in the form of dynamic curves; Historical data is stored in a database, and search functionality is provided based on time range and parameter type.

[0009] Preferably, the alarm preset threshold in the data processing and monitoring module includes a normal range, a warning value, and an emergency value. When an alarm is triggered, the audible and visual alarm is activated simultaneously, and an alarm log containing the time, parameters, and the value exceeding the limit is generated.

[0010] Preferably, the cloud platform automatically generates a daily water quality analysis report, which includes the maximum, minimum, and average values ​​of the monitoring parameters, as well as statistics on the number of times the parameters exceeded the standard.

[0011] Preferably, the wireless transmission unit is a 4G DTU module, and the host computer and the cloud platform communicate using the MQTT protocol.

[0012] Preferably, the system also has a reserved extended communication interface for connecting a dissolved oxygen sensor or a turbidity sensor.

[0013] On the other hand, the present invention also proposes an automatic hot water quality detection method, applied to the above-mentioned automatic hot water quality detection system, comprising the following steps: The analog signals of water quality parameters are collected by various sensors in the integrated sensor chamber, and after signal conditioning and A / D conversion, digital signals are directly output. The digital signals are acquired by the PLC via RS485 industrial network and Modbus RTU protocol; The host computer displays, stores, and performs threshold checks on the collected data in real time, and triggers a local alarm if the data is abnormal. Data is packaged and uploaded to the cloud platform via wireless network, enabling remote access, historical tracing, and intelligent analysis of the data.

[0014] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an automatic hot water quality detection system and method. Through highly integrated sensor acquisition modules, industrial-grade communication networks and cloud-based collaborative management, it realizes real-time, accurate and automatic monitoring of multiple parameters of hot water quality, overcomes the technical problems of low efficiency, non-standard data management and delayed response of traditional manual detection, significantly improves monitoring efficiency and system reliability, and reduces operation and maintenance costs, providing efficient data support and security for smart heating. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the system structure provided by the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] On the one hand, such as Figure 1 As shown, this invention discloses an automatic hot water quality detection system, comprising: The sensor acquisition module includes an integrated sensor compartment housing a pH sensor and a hardness sensor. The compartment also includes a built-in power supply module, signal conditioning circuitry, and an analog-to-digital (AD) converter. The power supply module powers each sensor, the signal conditioning circuitry conditions and converts the analog signals output by each sensor into standard electrical signals, and the AD converter converts the conditioned standard electrical signals into digital signals. The integrated sensor compartment integrates the power supply module, signal conditioning circuitry, and AD converter via a customized PCB board.

[0019] This embodiment integrates pH value and hardness (Ca²) sensors within the control cabinet.+ / Mg² + Two types of sensors are used to achieve parallel data acquisition through unified power supply and standardized signal processing: pH sensor: It adopts the glass electrode method and calculates the pH value by the potential difference between the electrode and the reference electrode. The range covers 0-14 and the accuracy is ±0.1.

[0020] Hardness sensor: It applies the principle of EDTA complexometric titration, and converts the color change of calcium and magnesium ions with the indicator into an electrical signal output, with a range of 0-500 mg / L.

[0021] Each sensor has a built-in signal conditioning circuit that converts the analog signal into a standard 4-20mA current output, which is collected by the PLC in the control cabinet to ensure that the sampling interval is ≤1 second.

[0022] The data acquisition and transmission module includes a PLC and an RS485 communication network. The PLC is connected to the sensor acquisition module through the RS485 communication network and acquires digital signals according to the Modbus RTU protocol.

[0023] Specifically, an RS485 bus is used to build a master-slave communication architecture; the Modbus RTU protocol is adopted, defining the address of each sensor register (e.g., register 40001 corresponds to the PH value), with a baud rate of 19200bps, 8 data bits, and no parity check. The PLC polls the slave station every 200ms, and the collected data is buffered locally.

[0024] The data processing and monitoring module includes a host computer that communicates with the PLC. It is used to receive, display, and store water quality data, and is configured to trigger an alarm when the water quality data exceeds a preset threshold.

[0025] The host computer is also configured as follows: Receive and store water quality data from the PLC; It provides a graphical human-machine interface, which synchronously displays real-time data and historical trends of pH value and hardness in the form of dynamic curves (pH / hardness are displayed in separate layers). Historical data is stored in a database, and search functionality is provided based on time range and parameter type.

[0026] Three alarm thresholds are preset (normal pH 6.5-8.5, warning value 6.0 / 9.0, emergency value 5.5 / 9.5). When triggered, the audible and visual alarm (≥85dB buzzer + red strobe light) is activated, and an alarm log (including time, parameters, and exceedance value) is generated simultaneously.

[0027] The cloud management module includes a cloud platform. The host computer communicates with the cloud platform through a built-in wireless transmission unit to upload water quality data to the cloud platform for remote monitoring and analysis.

[0028] Data uploading to the cloud and remote control are achieved through the MQTT protocol.

[0029] The host computer has a built-in 4G DTU module for wireless transmission (supporting TCP / IP), which uploads compressed JSON data packets (including device ID, timestamp, and parameter values) to the cloud platform every 5 minutes.

[0030] The cloud platform automatically generates daily water quality analysis reports, which include the maximum, minimum, and average values ​​of the monitoring parameters, as well as statistics on the number of times the parameters exceeded the standards.

[0031] In this embodiment, the automatic hot water quality detection system also has a reserved extended communication interface for connecting a dissolved oxygen sensor or a turbidity sensor.

[0032] On the other hand, the present invention also proposes an automatic hot water quality detection method, applied to the above-mentioned automatic hot water quality detection system, comprising the following steps: The analog signals of water quality parameters are collected by various sensors in the integrated sensor chamber, and after signal conditioning and A / D conversion, digital signals are directly output. Digital signals are acquired by the PLC via RS485 industrial network and Modbus RTU protocol; The host computer displays, stores, and performs threshold checks on the collected data in real time, and triggers a local alarm if the data is abnormal. Data is packaged and uploaded to the cloud platform via wireless network, enabling remote access, historical tracing, and intelligent analysis of the data.

[0033] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic hot water quality detection system, characterized in that, include: The sensor acquisition module includes an integrated sensor compartment, which integrates a pH sensor and a hardness sensor, and also includes a built-in power supply module, a signal conditioning circuit, and an AD conversion module. The signal conditioning circuit conditions the analog signals output by each sensor and converts them into standard electrical signals, and the AD conversion module converts the conditioned standard electrical signals into digital signals. The data acquisition and transmission module includes a PLC and an RS485 communication network. The PLC is connected to the sensor acquisition module through the RS485 communication network and acquires the digital signals according to the Modbus RTU protocol. The data processing and monitoring module includes a host computer that is communicatively connected to the PLC. The host computer is used to receive, display, and store water quality data, and is configured to trigger an alarm when the water quality data exceeds a preset threshold. The cloud management module includes a cloud platform. The host computer communicates with the cloud platform through a built-in wireless transmission unit to upload water quality data to the cloud platform for remote monitoring and analysis.

2. The automatic hot water quality detection system according to claim 1, characterized in that, The integrated sensor compartment integrates a power supply module, signal conditioning circuit, and AD conversion module via a customized PCB board.

3. The system according to claim 1, characterized in that, The host computer in the data processing and monitoring module is also configured as follows: Receive and store water quality data from the PLC; A graphical human-machine interface is provided, which is used to synchronously display real-time data and historical trends of pH value and hardness in the form of dynamic curves; Historical data is stored in a database, and search functionality is provided based on time range and parameter type.

4. The automatic hot water quality detection system according to claim 1, characterized in that, The data processing and monitoring module has three preset alarm thresholds, including normal range, warning value and emergency value. When an alarm is triggered, the audible and visual alarm is activated simultaneously and an alarm log containing time, parameters and out-of-limit values ​​is generated.

5. The automatic hot water quality detection system according to claim 1, characterized in that, The cloud platform automatically generates daily water quality analysis reports, which include the maximum, minimum, and average values ​​of the monitoring parameters, as well as statistics on the number of times the parameters exceeded the standards.

6. The automatic hot water quality detection system according to claim 1, characterized in that, The wireless transmission unit is a 4G DTU module, and the host computer and the cloud platform communicate using the MQTT protocol.

7. The automatic hot water quality detection system according to claim 1, characterized in that, The system also has a reserved extended communication interface for connecting to a dissolved oxygen sensor or a turbidity sensor.

8. An automatic method for detecting the quality of hot water supply, characterized in that, Includes the following steps: The analog signals of water quality parameters are collected by various sensors in the integrated sensor chamber, and after signal conditioning and A / D conversion, digital signals are directly output. The digital signals are acquired by the PLC via RS485 industrial network and Modbus RTU protocol; The host computer displays, stores, and performs threshold checks on the collected data in real time, and triggers a local alarm if the data is abnormal. Data is packaged and uploaded to the cloud platform via wireless network, enabling remote access, historical tracing, and intelligent analysis of the data.

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