KR-20260064949-A - IoT-BASED RINSE WATER MONITORING AND CONTROL SYSTEM

Abstract

The present invention relates to an IoT-based water rinse monitoring and control system. An IoT-based rinse water monitoring and control system according to the present invention comprises: a monitoring unit that monitors the state of impurities in the rinse water using an IoT sensor installed in a rinse water tank; a storage unit that stores the monitored state of impurities in the rinse water tank and the valve control history of the rinse water tank; a control unit that controls a rinse water supply valve and a rinse water discharge valve based on the monitored state of impurities in the rinse water tank so that the Total Dissolved Solids (TDS) in the rinse water tank meets the allowable TDS standard of the rinse process; and a providing unit that provides the monitored state of impurities in the rinse water and the valve control history of the rinse water tank to a user in real time. As such, according to the present invention, the condition of the water can be monitored in real time by connecting a washing water control system and an IoT sensor within the washing process, and through this, energy efficiency can be improved and water costs can be reduced by identifying accurate management standards for washing water.

Inventors

• 이상덕
• 여철호
• 김기덕
• 박진철
• 차승우

Assignees

• (주)로드피아

Dates

Publication Date

20260508

Application Date

20241030

Claims (5)

1. A monitoring unit that monitors the state of impurities in the wash water using an IoT sensor installed inside the wash tank; A storage unit that stores the status of impurities in the aforementioned monitored wash tank and the valve control history of the wash tank; A control unit that controls a wash water supply valve and a wash water discharge valve based on the impurity status in the wash water tank monitored above, so that the Total Dissolved Solids (TDS) in the wash water tank meets the allowable TDS standard of the wash process; and An IoT-based rinse water monitoring and control system comprising a providing unit that provides the user with the impurity status of the monitored rinse water and the valve control history of the rinse water tank in real time.
2. In paragraph 1, The above IoT sensor is an IoT-based rinse water monitoring and control system including a pH sensor, a concentration sensor, and a TDS (Total Dissolved Solids) sensor.
3. In paragraph 1, The above monitoring unit is, An IoT-based rinse water monitoring and control system that monitors whether the TDS in the rinse water tank is within the allowable TDS range of the current rinse process by monitoring the impurity status in the rinse water tank using the above-mentioned IoT sensor.
4. In paragraph 1, The above monitoring unit is, An IoT-based rinse water monitoring and control system that monitors changes in the state of impurities in the rinse water when performing each rinse process.
5. In paragraph 1, The above storage unit is, An IoT-based rinse water monitoring and control system that stores data including production volume data, rinse water usage data, rinse water status data, quality data, and wastewater treatment environmental condition data of a surface treatment plant built through DX (Digital Transformation), and uses the said data as a data set to train a learning model that predicts and analyzes inventory movement patterns and supply chain changes of the surface treatment plant.

Description

IoT-Based Rinse Water Monitoring and Control System The present invention relates to an IoT-based rinse water monitoring and control system, and more specifically, to an IoT-based rinse water monitoring and control system that monitors the condition of surface treatment rinse water in real time through IoT sensors to collect data and controls the use of an appropriate amount of rinse water in the rinse process. This research was conducted with funding from Gyeonggi Technopark and supported by the research project on IoT control systems for industrial water conservation. The annual water consumption of Korea's six major root industries—casting, molding, plastic processing, welding, surface treatment, and heat treatment—is 140.9 billion won, which is higher than that of other industries. In particular, the surface treatment industry consumes the most water among the root industries, at 43.25 billion won. In addition, as international environmental regulations are tightened, the domestic surface treatment industry is expected to take a hit. Therefore, it is necessary to conserve water energy during the surface treatment process and reduce the energy consumed in all processes for water supply. Conventional surface treatment wastewater zero-discharge systems (Waste Water Recycle Systems) designed for water and energy conservation have a technical limitation in that they are difficult to apply universally within the industry because they must be custom-made and used individually by surface treatment companies as the plating solution properties (additives, organic acids, metal ions) or products change. Therefore, rather than a technology that recycles surface treatment rinsing water, a technology is needed that can directly reduce the water energy used in surface treatment. The technology forming the background of the present invention is disclosed in Korean Registered Patent No. 10-2056088 (published Dec. 16, 2019). FIG. 1 is a diagram illustrating the configuration of an IoT-based water rinse monitoring and control system according to one embodiment of the present invention. Figures 2a and 2b are drawings for explaining the rinsing process of surface treatment. FIG. 3 is a schematic diagram illustrating an IoT-based water washing monitoring and control system according to one embodiment of the present invention. Then, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification have been given similar reference numerals. Throughout the specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "electrically connected" with other components interposed between them. Furthermore, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. FIG. 1 is a diagram illustrating the configuration of an IoT-based rinsing water monitoring and control system according to an embodiment of the present invention, and FIG. 2a and FIG. 2b are diagrams for explaining a rinsing process of surface treatment. As illustrated in FIG. 1, the IoT-based water monitoring and control system (100) of the present invention includes a monitoring unit (110), a storage unit (120), a control unit (130), and a providing unit (140). The monitoring unit (110) monitors the state of impurities in the wash water using an IoT sensor installed in the wash water tank. In this case, the IoT sensor includes a pH sensor, a concentration sensor, and a TDS (Total Dissolved Solids) sensor, and can measure the state of impurities in the rinse water. Referring to Fig. 2a, the rinsing process is described in more detail. Between each process of surface treatment, there is a rinsing process. The rinsing process is a process to wash off contaminants or treatment liquid attached to the material in the previous process and to prevent them from being introduced into the next process. In order to control the amount of rinsing water and clean efficiently, there are multi-stage series counter-flow rinsing methods, spray methods, air agitation/mechanical agitation, dam-type overflow, workpiece agitation, and hot water rinsing methods, and multiple combinations must be implemented according to the site conditions. In water treatment, an appropriate retention time is required because contaminants are not instantaneously diluted or diffused. The retention time needs to be determined by considering the shape and materi