Special dish-washing machine liquid medicine distributor based on RS485 communication protocol

Abstract

The utility model relates to the technical field of liquid medicine distributors, in particular to a special dish-washing machine liquid medicine distributor based on an RS485 communication protocol, which comprises a power supply module, a detection module, a communication module, a liquid medicine distribution signal output module and a time control signal output module, the real-time control module is used for communicating and transmitting a liquid medicine distribution signal and a time control signal to the liquid medicine distribution module, the liquid medicine distribution module is used for receiving the liquid medicine distribution signal and the time control signal and determining a first dose instruction, a second dose instruction, a first time instruction and a second time instruction, and the real-time control module is used for controlling the liquid medicine distribution module. The control module is used for receiving a first dose instruction, a second dose instruction, a first time instruction and a second time instruction, controlling the start-stop duration of the peristaltic pump according to the first time instruction and the second time instruction, and controlling the pumping content of the peristaltic pump according to the first dose instruction and the second dose instruction; the dishwasher has the effects of improving the application rate of the cleaning agent and the drier and improving the application experience of a user on the dishwasher.

Description

Technical Field

[0001] The present application relates to the technical field of liquid medicine dispensers, and in particular to a special dishwasher liquid medicine dispenser based on the RS485 communication protocol. Background Art

[0002] Currently, commercial dishwashers usually require the use of special detergents and drying agents when working, and a dispenser is used to control the use of the detergents and drying agents.

[0003] In the prior art, dedicated dishwasher liquid dispensers consist of two sets of components: one set controls the detergent peristaltic pump and a cleaning indicator, while the other sets the drying agent peristaltic pump and a rinse indicator. These two sets coordinate with each other during dishwasher operation. To start the dishwasher, the user manually adjusts the detergent content ratio on the cleaning indicator and the drying agent content ratio on the rinse indicator based on the amount of dishware in the dishwasher tub. The cleaning indicator and the rinse indicator then generate cleaning and rinsing instructions, respectively, which are sent to the detergent peristaltic pump and the drying agent peristaltic pump, respectively. Upon receiving the cleaning instruction, the detergent peristaltic pump pumps detergent into the tub in proportion to the dishware in the tub, performing a main wash. Once the drying agent peristaltic pump receives the rinse instruction and the dishwasher completes the main wash, the drying agent peristaltic pump pumps drying agent into the tub to dry the dishes. After the dishwasher completes the dry wash, the user removes the dishes from the tub, achieving a rapid dishwashing effect.

[0004] In response to the above content, the inventor believes that the presence of two sets of structural devices in the existing dishwasher increases the overall operating energy consumption of the dishwasher. At the same time, the use of manual means to adjust the washing parameters of the dishwasher also increases the waste of detergents and drying agents to a certain extent, and further reduces the user's experience of using the dishwasher. Utility Model Content

[0005] In order to solve at least one of the above technical problems, the present application provides a dedicated dishwasher liquid dispenser based on the RS485 communication protocol, which adopts the following technical solutions:

[0006] A special dishwasher liquid dispenser based on RS485 communication protocol, including a power supply module, a detection module, a liquid dispensing module and a real-time control module, wherein:

[0007] The power supply module is connected to the mains to provide voltage;

[0008] The detection module is connected to the power supply module and is used to detect whether there are dishes to be washed in the dishwasher tank. If so, it performs quantitative detection and stain degree detection on the dishes to be washed, compares the detection results with the preset dishwashing standards, and generates and outputs a liquid dispensing signal and a time control signal;

[0009] The communication module is connected to the output end of the detection module and the input end of the liquid medicine dispensing module, respectively, for receiving the liquid medicine dispensing signal and the time control signal, and communicating the liquid medicine dispensing signal and the time control signal to the liquid medicine dispensing module;

[0010] The liquid dispensing module is connected to the communication module and is used to receive a liquid dispensing signal and a time control signal, and determine a first dosage instruction corresponding to the detergent content and a second dosage instruction corresponding to the drying agent content according to the detergent content and the drying agent content in the liquid dispensing signal, and determine a first time instruction corresponding to the detergent content and a second time instruction corresponding to the drying agent content according to the time control signal;

[0011] The real-time control module is connected to the liquid dispensing module, and is used to receive the first dosage instruction, the second dosage instruction, the first time instruction and the second time instruction, and control the start and stop duration of the peristaltic pump according to the first time instruction and the second time instruction, and control the detergent content and the drying agent content pumped into the peristaltic pump according to the first dosage instruction and the second dosage instruction.

[0012] By implementing this technical solution, the power supply module serves as the foundation, providing a stable connection to the mains power supply and the necessary voltage support for the entire system, ensuring the normal operation of all dishwasher modules. The detection module performs intelligent sensing, not only determining the presence of dishes in the sink but also quantifying and assessing the degree of soiling, providing a precise basis for subsequent chemical dispensing, thereby improving dishwashing efficiency and cleanliness. The communication module, acting as a bridge for information transmission, efficiently transmits chemical dispensing signals and timing control signals generated by the detection module to the chemical dispensing module, achieving seamless information integration and ensuring a consistent and accurate washing process. Based on the received signals, the chemical dispensing module accurately calculates the dosage and duration of detergent and rinse aid, enabling precise washing and avoiding resource waste. The real-time control module, serving as the execution core, precisely controls the peristaltic pump's start and stop times, as well as the amount of detergent and rinse aid pumped, based on commands from the chemical dispensing module, achieving refined control of the washing process. This precise control approach not only improves washing performance but also reduces unnecessary energy and chemical consumption, making the dishwasher more energy-efficient and environmentally friendly, while also extending the device's lifespan. The entire dishwashing process, from detection to distribution to real-time control, is managed in a closed loop. Each link is closely connected and works synergistically to enhance the dishwasher's intelligence and efficiency. This provides users with a more convenient and efficient dishwashing experience, enabling precise control and intelligent management of the dishwasher's washing process. This not only improves washing efficiency and cleanliness, but also reduces energy and chemical consumption.

[0013] Optionally, the power supply module includes a bridge rectifier circuit and a transformer T, the primary side coil of the transformer T is connected to the mains, and the secondary side coil of the transformer T is connected to the AC input end of the bridge rectifier circuit.

[0014] By adopting the above technical solution, when converting AC power into DC power, the transformer T converts the mains voltage into household voltage, and then the bridge rectifier current converts the converted AC voltage into DC voltage. The bridge rectifier circuit has a high degree of integration and the circuit connection is convenient and simple. At the same time, the bridge rectifier circuit has a good rectification effect, which can improve the rectification effect.

[0015] Optionally, the detection module includes an image acquisition device and an electronic device, the power supply ends of the image acquisition device and the electronic device are both connected to the output end of the bridge rectifier circuit, the output end of the image acquisition device is connected to the input section of the electronic device, the image acquisition device acquires images in the dishwashing sink, and sends the acquired images in the sink to the electronic device for image recognition, the electronic device quantitatively detects the number of dishes to be cleaned and the degree of stains on the dishes to be cleaned based on the image features of the images in the sink, the electronic device compares the detection results after the detection is completed with the preset dishwashing standards, and generates and outputs a liquid distribution signal and a time control signal.

[0016] By implementing the above technical solution, the image acquisition device and electronic devices in the detection module work together to form the core of intelligent recognition. The image acquisition device accurately captures images of the dishwashing sink, providing reliable raw data for subsequent quantitative detection and soiling assessment. This direct image-based processing method improves detection accuracy and real-time performance, laying a solid foundation for subsequent solution distribution and time control. The output of the bridge rectifier circuit provides stable power support for the image acquisition device and electronic devices, ensuring the smooth operation of the entire detection process. The image acquisition device transmits the captured sink images to the electronic devices, enabling rapid data transmission and processing. This efficient data transmission method reduces delays and errors, improving the response speed and accuracy of the entire detection module. The electronic devices perform image recognition on the received sink images, accurately quantifying the number of dishes to be washed and assessing the degree of soiling based on image features. This image-based recognition method not only improves detection accuracy but also enables detailed classification of dishwashing soiling levels, providing a more accurate basis for subsequent solution distribution. The electronic device compares the test results with pre-set dishwashing standards and generates and outputs a signal for dispensing the chemical solution and a time control signal based on the comparison. This intelligent comparison and signal output method enables precise control of the washing process, avoids resource waste, and improves washing efficiency and cleanliness. This automated processing also reduces the user's operational burden and enhances the user experience.

[0017] Optionally, the communication module includes an RS485 bus, which is connected to the signal output end of the electronic device and the signal input section of the liquid medicine dispensing module, and is used to receive the liquid medicine dispensing signal and the time control signal, and communicate the liquid medicine dispensing signal and the time control signal to the liquid medicine dispensing module.

[0018] By adopting the above technical solution, the RS485 bus in the communication module serves as the primary channel for signal transmission, connecting the signal output of the electronic device with the signal input of the liquid dispensing module. This connection ensures signal stability and accuracy during transmission, preventing wash process anomalies caused by signal interference or loss. Furthermore, the RS485 bus not only offers efficient communication capabilities but also supports multi-point connection, enabling the communication module to process multiple signals simultaneously, improving the concurrent processing capabilities of the entire system. This efficient communication method ensures that liquid dispensing signals and time control signals are transmitted to the liquid dispensing module in a timely and accurate manner, ensuring subsequent precision washing. The communication module utilizes the RS485 bus for signal transmission, achieving seamless integration between the electronic device and the liquid dispensing module. This seamless integration not only improves signal transmission efficiency but also reduces communication failures caused by interface mismatches or protocol incompatibilities, enhancing the stability and reliability of the entire system. After receiving the liquid dispensing and time control signals, these signals are rapidly transmitted to the liquid dispensing module, enabling real-time signal transmission and processing. This real-time communication method ensures that the washing process can be carried out according to the preset program, improving the accuracy and efficiency of washing.

[0019] Optionally, the liquid dispensing module includes a signal converter, the input section of the signal converter is connected to the signal output section of the RS485 bus, and is used to receive a liquid dispensing signal and a time control signal, and convert the liquid dispensing signal into a first dosage instruction corresponding to the detergent content and a second dosage instruction corresponding to the drying agent content, and convert the time control signal into a first time instruction corresponding to the detergent content and a second time instruction corresponding to the drying agent content.

[0020] By adopting the above technical solution, the signal converter in the liquid dispensing module serves as the core of signal processing and is connected to the signal output terminal of the RS485 bus. This connection ensures that the signal converter can accurately and promptly receive the liquid dispensing signal and timing control signal from the electronic device, providing reliable support for subsequent command conversion. After receiving the liquid dispensing signal, it can quickly convert it into a first dosage instruction corresponding to the detergent content and a second dosage instruction corresponding to the rinse aid content. This precise command conversion ensures accurate addition of detergent and rinse aid during the wash process, improving washing results and efficiency. Furthermore, the signal converter converts the received timing control signal into a first timing instruction corresponding to the detergent content and a second timing instruction corresponding to the rinse aid content. This ensures that the wash process proceeds according to the preset time schedule, ensuring the full effect of the detergent and rinse aid during the wash process and improving wash quality. During the conversion process, the signal converter maintains signal stability and accuracy, preventing wash process anomalies caused by signal interference or conversion errors. This stable signal conversion capability improves the reliability and stability of the entire liquid dispensing module, providing strong support for the normal operation of the dishwasher.

[0021] Optionally, the real-time control module includes a PLC controller, which receives the first dosage instruction, the second dosage instruction, the first time instruction and the second time instruction, and after receiving the first time instruction, controls the peristaltic pump to start according to the first dosage instruction to pump a specified dosage of detergent into the dishwashing sink, and controls the peristaltic pump to stop after pumping the specified dosage of detergent. When receiving the second time instruction, it determines whether the time node of the first time instruction meets the specified time node. If so, it controls the peristaltic pump to start according to the second dosage instruction to pump a specified dosage of drying agent into the dishwashing sink, and controls the peristaltic pump to stop after pumping the specified dosage of detergent.

[0022] By adopting the above technical solution, the PLC controller in the real-time control module, serving as the core control unit, can accurately receive the first dosage instruction, second dosage instruction, first time instruction, and second time instruction from the signal converter. This precise instruction reception ensures that the washing process proceeds according to the preset program, improving washing accuracy and controllability. After receiving the first time instruction, the peristaltic pump can be quickly activated according to the first dosage instruction. This ensures that detergent is accurately added at the beginning of the washing process, improving washing efficiency and efficiency. Furthermore, the PLC controller can promptly stop the peristaltic pump after the specified dosage of detergent has been pumped in, avoiding detergent waste. After receiving the second time instruction, the PLC controller determines whether the time node of the first time instruction meets the specified time node. This ensures that the drying agent is accurately added at the critical stage of the washing process, improving drying efficiency and washing quality. If the specified time node is met, the PLC controller activates the peristaltic pump according to the second dosage instruction, pumping the specified dosage of drying agent into the dishwashing tank. After the specified dosage of drying agent has been pumped in, the peristaltic pump is quickly stopped. This not only avoids the waste of drying agent, but also ensures the smooth progress of the washing process and improves the stability and reliability of the entire washing system.

[0023] Optionally, a dosage detection module is also included, which includes a liquid level sensor, the output end of the liquid level sensor is connected to the input end of the PLC controller, and the liquid level sensors are respectively arranged in a cleaning container containing the detergent and a drying container containing the drying agent, and are used to detect the remaining content of the detergent and the remaining content of the drying agent, and output a detergent content signal and a drying agent content signal.

[0024] By implementing the above technical solution and incorporating a dosage detection module, the system can monitor the remaining levels of detergent and rinse aid in real time. The liquid level sensor, as the core detection mechanism, ensures data accuracy with its precise measurement capabilities, providing reliable input information for the PLC controller. This real-time monitoring design helps prevent poor washing results due to insufficient dosage, improving the stability and reliability of the washing process. The liquid level sensor, located within the cleaning container, detects the remaining detergent level in real time. When the detergent level falls below a preset threshold, the sensor outputs a corresponding detergent level signal to the PLC controller. This design enables the system to respond promptly and remind the user to replenish detergent, preventing the impact of insufficient detergent on washing results and ensuring efficient washing. A liquid level sensor is also located within the rinse aid container to detect the remaining rinse aid level. Rinse aid plays a crucial role in the washing process, with its level directly impacting drying efficiency. Real-time monitoring by the liquid level sensor ensures an adequate supply of rinse aid at critical moments, preventing incomplete drying of laundry due to insufficient rinse aid, thereby improving wash quality and user satisfaction. The detergent and rinse aid levels signals from the liquid level sensor are connected to the inputs of the PLC controller. Based on these signals, the PLC intelligently determines and controls the peristaltic pump's start / stop and dosage output. This not only increases the automation level of the washing process but also enables the system to flexibly adjust based on actual conditions, ensuring optimal washing results.

[0025] Optionally, an alarm module is also included, which includes an alarm. The signal input end of the alarm is connected to the signal output end of the PLC controller. After receiving the detergent content signal and the drying agent content signal, the PLC controller respectively determines whether at least one of the detergent content in the detergent content signal and the drying agent content in the drying agent content signal does not meet the preset content. If so, an alarm instruction is generated and sent to the alarm. After receiving the alarm instruction, the alarm responds to execute the alarm instruction and issues a remaining content alarm.

[0026] By adopting the above technical solution, when the PLC controller receives detergent and rinse aid content signals, it immediately processes these signals to determine whether the levels meet preset values. This ensures that the system can immediately detect insufficient dosage, enabling subsequent timely replenishment, thereby ensuring the continuity and stability of the washing process. Furthermore, the alarm, a core component of the alarm module, has its signal input connected to the signal output of the PLC controller. When the PLC controller detects insufficient detergent or rinse aid levels, it immediately generates an alarm command and sends it to the alarm controller. This reduces information transmission delays, ensures timely and accurate alarms, and provides reliable user reminders. After receiving the content signals, the system separately determines whether the detergent and rinse aid levels meet preset values. This separate determination method enables the system to more accurately pinpoint the problem, accurately identifying and triggering an alarm for either insufficient detergent or rinse aid. This precise determination capability enhances the system's intelligence and provides users with more specific fault information. When the PLC controller detects that at least one content does not meet the preset value, it immediately generates an alarm command. It ensures that users can know the situation of insufficient dosage at the first time, so that they can take timely measures to replenish it, avoiding poor washing effect caused by insufficient dosage and improving user experience and satisfaction.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By implementing the above technical solution, the power supply module serves as the foundation, providing a stable connection to the mains power supply and the necessary voltage support for the entire system, ensuring the normal operation of all dishwasher modules. The detection module performs intelligent sensing, not only determining the presence of dishes in the sink but also quantifying and assessing the degree of soiling, providing a precise basis for subsequent liquid dispensing, thereby improving dishwashing efficiency and cleanliness. The communication module, acting as a bridge for information transmission, efficiently transmits the liquid dispensing and timing control signals generated by the detection module to the liquid dispensing module, achieving seamless information integration and ensuring a consistent and accurate washing process. Based on the received signals, the liquid dispensing module accurately calculates the dosage and duration of detergent and rinse aid, enabling precise washing and avoiding resource waste. The real-time control module, serving as the execution core, precisely controls the start and stop times of the peristaltic pump and the amount of detergent and rinse aid pumped, based on commands issued by the liquid dispensing module, achieving refined control of the washing process. This precise control method not only improves washing results, but also reduces unnecessary energy and chemical consumption, making the dishwasher more energy-efficient and environmentally friendly, while also extending the life of the equipment. The entire dishwashing process implements closed-loop management from detection to distribution to real-time control. Each link is closely connected and works together to improve the intelligence level and washing efficiency of the dishwasher. It brings users a more convenient and efficient dishwashing experience, realizes precise control and intelligent management of the dishwasher's washing process, not only improves washing efficiency and cleanliness, but also reduces the dishwasher's energy consumption and chemical consumption;

[0029] 2. By adopting the above technical solution, the RS485 bus in the communication module serves as the primary channel for signal transmission, connecting the signal output of the electronic device with the signal input of the liquid dispensing module. This connection ensures signal stability and accuracy during transmission, preventing wash process anomalies caused by signal interference or loss. Furthermore, the RS485 bus not only offers efficient communication capabilities but also supports multi-point connection, enabling the communication module to simultaneously process multiple signals, improving the concurrent processing capabilities of the entire system. This efficient communication method ensures that liquid dispensing signals and time control signals are transmitted to the liquid dispensing module in a timely and accurate manner, ensuring subsequent precision washing. The communication module utilizes the RS485 bus for signal transmission, achieving seamless integration between the electronic device and the liquid dispensing module. This seamless integration not only improves signal transmission efficiency but also reduces communication failures caused by interface mismatches or protocol incompatibilities, enhancing the stability and reliability of the entire system. After receiving the liquid dispensing and time control signals, these signals are rapidly transmitted to the liquid dispensing module, enabling real-time signal transmission and processing. This real-time communication method ensures that the washing process can be carried out according to the preset program, improving the accuracy and efficiency of washing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall module of a dedicated dishwasher liquid dispenser based on the RS485 communication protocol according to an embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the power supply circuit of a dedicated dishwasher liquid dispenser based on the RS485 communication protocol in an embodiment of the present application.

[0032] Explanation of the accompanying drawings: 1. Power supply module; 2. Detection module; 3. Communication module; 4. Liquid medicine distribution module; 5. Real-time control module; 6. Bridge rectifier circuit; 7. Dosage detection module; 8. Alarm module. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 This application is described in further detail.

[0034] The embodiment of the present application discloses a special dishwasher liquid dispenser based on RS485 communication protocol. Figure 1 The dishwasher comprises a power supply module 1, a detection module 2, a liquid dispensing module 4, and a real-time control module 5. When washing dishes, the power supply module 1 serves as the foundation, providing a stable connection to the mains power supply and the necessary voltage support for the entire system, ensuring the normal operation of all dishwasher modules. The detection module 2 provides intelligent sensing, not only determining the presence of dishes in the sink but also quantifying and assessing the degree of soiling, providing a precise basis for subsequent liquid dispensing, thereby improving dishwashing efficiency and cleanliness. The communication module 3 acts as an information bridge, efficiently transmitting the liquid dispensing signals and time control signals generated by the detection module 2 to the liquid dispensing module 4, achieving seamless information integration and ensuring a consistent and accurate washing process. Based on the received signals, the liquid dispensing module 4 accurately calculates the dosage and duration of the detergent and rinse aid, enabling precise washing and avoiding resource waste. The real-time control module 5, the execution core, precisely controls the start and stop times of the peristaltic pump and the amount of detergent and rinse aid pumped, based on instructions from the liquid dispensing module 4, achieving refined control of the washing process. This precise control method not only improves washing results but also reduces unnecessary energy and chemical consumption, making the dishwasher more energy-efficient and environmentally friendly while also extending its lifespan. The entire dishwashing process, from detection to distribution to real-time control, is managed in a closed-loop system. Each link is closely connected and synergistic, collectively enhancing the dishwasher's intelligence and washing efficiency. This provides users with a more convenient and efficient dishwashing experience, enabling precise control and intelligent management of the dishwasher's washing process. This not only improves washing efficiency and cleanliness, but also reduces energy and chemical consumption.

[0035] Reference Figure 2 The power supply module 1 includes a bridge rectifier circuit 6 and a transformer T. The primary coil of the transformer T is connected to the mains, and the secondary coil of the transformer T is connected to the AC input terminal of the bridge rectifier circuit 6. When converting AC power to DC power, the transformer T converts the mains voltage to household voltage, and then the bridge rectifier circuit converts the converted AC voltage to DC voltage. The bridge rectifier circuit 6 has a high degree of integration and is convenient and simple to connect to the circuit. At the same time, the bridge rectifier circuit 6 has a good rectification effect, which can improve the rectification effect.

[0036] Reference Figure 1 and Figure 2 Detection module 2 includes an image acquisition device and an electronic device. The power supply terminals of the image acquisition device and the electronic device are both connected to the output terminal of the bridge rectifier circuit 6. The output terminal of the image acquisition device is connected to the input terminal of the electronic device. The image acquisition device captures images from the sink and transmits these images to the electronic device for image recognition. The electronic device quantifies the number of dishes to be washed and measures the degree of soiling based on the image features of the sink. The electronic device compares the detection results with preset dishwashing standards and generates and outputs a liquid dispensing signal and a time control signal. The image acquisition device and the electronic device in detection module 2 work together to form the core of intelligent recognition. The image acquisition device accurately captures images from the sink, providing reliable raw data for subsequent quantitative detection and soiling assessment. This direct image-based processing method improves detection accuracy and real-time performance, laying a solid foundation for subsequent liquid dispensing and time control. The output terminal of the bridge rectifier circuit 6 provides stable power support for the image acquisition device and electronic device, ensuring the smooth operation of the entire detection process. The image acquisition device sends the captured images of the tank interior to the electronic device, enabling rapid data transmission and processing. This efficient data transmission method reduces delays and errors, improving the response speed and accuracy of the entire detection module 2. The electronic device performs image recognition on the received tank interior images, accurately quantifying the number of dishes to be cleaned based on image features and assessing the degree of soiling. This image feature-based recognition method not only improves detection accuracy but also enables detailed classification of the degree of dishwashing, providing a more accurate basis for subsequent liquid medicine distribution. The electronic device compares the test results after completion with the preset dishwashing standards and generates and outputs a liquid medicine distribution signal and a time control signal based on the comparison results. This intelligent comparison and signal output method enables precise control of the washing process, avoids waste of resources, and improves washing efficiency and cleanliness. At the same time, this automated processing method also reduces the user's operational burden and enhances the user experience.

[0037] In the embodiments of the present application, the image acquisition device may include a camera, and the electronic device may be a server or a terminal device. The server may be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device may be, but is not limited to, a smartphone, a tablet computer, a laptop computer, a desktop computer, or the like.

[0038] It is worth mentioning that the technical means of quantitative detection and stain degree detection of the detection module 2 in this application are all existing technologies. This application only protects the connection structure and instruction transmission between the detection module 2 and the dedicated dishwasher liquid dispenser.

[0039] Reference Figure 1 The communication module 3 includes an RS485 bus, which is connected to the signal output terminal of the electronic device and the signal input section of the liquid dispensing module 4. It is used to receive the liquid dispensing signal and the time control signal, and then communicate the liquid dispensing signal and the time control signal to the liquid dispensing module 4. The RS485 bus in the communication module 3 serves as the main channel for signal transmission, connecting the signal output terminal of the electronic device with the signal input terminal of the liquid dispensing module 4. This connection method ensures the stability and accuracy of the signal during transmission, avoiding abnormal washing process caused by signal interference or loss. At the same time, the RS485 bus not only has efficient communication capabilities, but also supports multi-point connection, allowing the communication module 3 to process multiple signals simultaneously, improving the concurrent processing capability of the entire system. This efficient communication method ensures that the liquid dispensing signal and the time control signal can be transmitted to the liquid dispensing module 4 in a timely and accurate manner, providing a guarantee for subsequent precise washing. When the communication module 3 uses the RS485 bus for signal transmission, it achieves seamless connection between the electronic device and the liquid dispensing module 4. This seamless connection not only improves signal transmission efficiency but also reduces communication failures caused by interface mismatches or protocol incompatibilities, enhancing the stability and reliability of the entire system. After receiving the liquid dispensing signal and time control signal, these signals are rapidly transmitted to the liquid dispensing module 4, enabling real-time signal transmission and processing. This real-time communication ensures that the washing process proceeds according to the pre-set program, improving washing accuracy and efficiency.

[0040] Reference Figure 1 and Figure 2The liquid dispensing module 4 includes a signal converter. Its power supply is connected to the output of the bridge rectifier circuit 6, and its input is connected to the signal output section of the RS485 bus. The signal converter receives the liquid dispensing signal and the time control signal, converting the liquid dispensing signal into a first dosage instruction corresponding to the detergent content and a second dosage instruction corresponding to the rinse aid content. It also converts the time control signal into a first time instruction corresponding to the detergent content and a second time instruction corresponding to the rinse aid content. The signal converter in the liquid dispensing module 4, serving as the core of signal processing, is connected to the signal output section of the RS485 bus. This connection ensures that the signal converter accurately and promptly receives the liquid dispensing signal and the time control signal from the electronic device, providing reliable support for subsequent instruction conversion. Upon receiving the liquid dispensing signal, it can quickly convert it into a first dosage instruction corresponding to the detergent content and a second dosage instruction corresponding to the rinse aid content. This precise instruction conversion ensures accurate addition of detergent and rinse aid during the washing process, improving washing results and efficiency. Furthermore, the signal converter converts the received time control signal into a first time instruction corresponding to the detergent content and a second time instruction corresponding to the rinse aid content. This ensures that the washing process proceeds according to the preset time schedule, ensuring the full effect of the detergent and rinse aid during the washing process, and improving wash quality. During the conversion process, the signal converter maintains signal stability and accuracy, preventing wash process anomalies caused by signal interference or conversion errors. This stable signal conversion capability improves the reliability and stability of the entire liquid dispensing module 4, providing strong support for the normal operation of the dishwasher.

[0041] Reference Figure 1 and Figure 2The real-time control module 5 includes a PLC controller, the power supply end of which is connected to the output end of the bridge rectifier circuit 6. The PLC controller receives a first dosage instruction, a second dosage instruction, a first time instruction, and a second time instruction. After receiving the first time instruction, the PLC controller controls the peristaltic pump to start pumping a specified dosage of detergent into the dishwashing tank according to the first dosage instruction. After the specified dosage of detergent is pumped, the peristaltic pump is controlled to stop operating. After receiving the second time instruction, it determines whether the time node of the first time instruction meets the specified time node. If so, the PLC controller controls the peristaltic pump to start pumping a specified dosage of drying agent into the dishwashing tank according to the second dosage instruction. After the specified dosage of detergent is pumped, the peristaltic pump is controlled to stop operating. The PLC controller in the real-time control module 5 serves as the core control unit and can accurately receive the first dosage instruction, the second dosage instruction, the first time instruction, and the second time instruction from the signal converter. This precise instruction reception capability ensures that the washing process can proceed according to the preset program, improving the accuracy and controllability of washing. After receiving the first time instruction, the peristaltic pump can be quickly controlled to start according to the first dosage instruction. This ensures that detergent is accurately added at the start of the wash cycle, improving washing effectiveness and efficiency. Furthermore, the PLC controller promptly stops the peristaltic pump after the specified dose of detergent has been pumped in, preventing detergent waste. Upon receiving the second time instruction, the controller determines whether the time of the first time instruction meets the specified time. This ensures that the drying agent is accurately added at critical stages of the wash cycle, improving drying effectiveness and wash quality. If the specified time is met, the PLC controller activates the peristaltic pump according to the second dosage instruction, pumping the specified dose of drying agent into the sink. After the specified dose of drying agent has been pumped in, the peristaltic pump is quickly stopped. This not only prevents the waste of drying agent but also ensures a smooth wash cycle. This also improves the stability and reliability of the entire washing system.

[0042] Reference Figure 1The system also includes a dosage detection module 7, which includes a liquid level sensor. The output of the liquid level sensor is connected to the input of the PLC controller. The liquid level sensors are respectively located in the cleaning container containing detergent and the drying agent container containing drying agent. They are used to detect the remaining detergent and drying agent levels and output detergent and drying agent content signals. The addition of dosage detection module 7 enables the system to monitor the remaining detergent and drying agent levels in real time. As the detection core, the liquid level sensor's precise measurement capability ensures data accuracy and provides reliable input information for the PLC controller. This real-time monitoring design helps avoid poor washing results due to insufficient dosage and improves the stability and reliability of the washing process. The liquid level sensor is located in the cleaning container and can detect the remaining detergent level in real time. When the detergent level falls below a preset threshold, the liquid level sensor outputs a corresponding detergent content signal to the PLC controller. This design enables the system to respond promptly and remind the user to replenish detergent, avoiding the impact of insufficient detergent on washing results and ensuring the efficiency of the washing process. A liquid level sensor is also installed in the drying container to detect the remaining amount of drying agent. The role of drying agent is crucial during the washing process, and its content directly affects the drying effect. Real-time monitoring by the liquid level sensor ensures an adequate supply of drying agent at critical moments, avoiding incomplete drying of laundry due to insufficient drying agent, thereby improving washing quality and user satisfaction. The detergent content signal and the drying agent content signal output by the liquid level sensor are both connected to the input of the PLC controller. Based on the received signals, the PLC controller can intelligently determine and control the start and stop of the peristaltic pump and the dosage output. This not only improves the degree of automation of the washing process, but also enables the system to be flexibly adjusted according to actual conditions, ensuring the optimization of the washing effect.

[0043] Reference Figure 1The system further includes an alarm module 8, which includes an alarm. The alarm's signal input is connected to the signal output of the PLC controller. Upon receiving the detergent content signal and the rinse-accelerator content signal, the PLC controller determines whether at least one of the detergent content in the detergent content signal and the rinse-accelerator content in the rinse-accelerator content signal does not meet a preset value. If so, the PLC controller generates an alarm instruction and sends the alarm instruction to the alarm. Upon receiving the alarm instruction, the alarm executes the alarm instruction and issues a remaining content alarm. Upon receiving the detergent content signal and the rinse-accelerator content signal, the PLC controller immediately processes the signals and determines whether the content meets the preset value. This ensures that the system can detect insufficient dosage immediately, enabling subsequent timely replenishment, thereby ensuring the continuity and stability of the washing process. Furthermore, the alarm, as a core component of the alarm module 8, has its signal input connected to the signal output of the PLC controller. When the PLC controller detects insufficient detergent or rinse-accelerator content, it immediately generates an alarm instruction and sends it to the alarm. This reduces information transmission delays, ensures the timeliness and accuracy of alarms, and provides users with a reliable reminder service. After receiving the content signal, the system determines whether the detergent and rinse aid levels meet the preset values. This separate determination allows the system to more precisely pinpoint the problem, accurately identifying insufficient detergent or rinse aid and triggering an alarm. This precise judgment enhances the system's intelligence and provides users with more specific fault information. When the PLC controller detects that at least one content does not meet the preset value, it immediately generates an alarm. This ensures that users are immediately informed of insufficient dosage and can take timely measures to replenish it, avoiding poor washing results caused by insufficient dosage and improving user experience and satisfaction.

[0044] The implementation principle of a dedicated dishwasher liquid dispenser based on the RS485 communication protocol in this embodiment is as follows: When the dishwasher is washing dishes, the power supply module 1 serves as the foundation, providing a stable connection to the mains power supply and the necessary voltage support for the entire system, ensuring the normal operation of all dishwasher modules. The detection module 2 performs intelligent sensing, not only determining whether dishes are in the sink but also quantifying and assessing the degree of soiling, providing a precise basis for subsequent liquid distribution, thereby improving dishwashing efficiency and cleanliness. The communication module 3 acts as an information bridge, efficiently transmitting the liquid distribution signal and time control signal generated by the detection module 2 to the liquid distribution module 4, achieving seamless information integration and ensuring the consistency and accuracy of the washing process. The liquid distribution module 4, based on the received signals, accurately calculates the dosage and duration of the detergent and rinse aid, enabling precise washing and avoiding resource waste. The real-time control module 5, as the execution core, precisely controls the start and stop time of the peristaltic pump and the amount of detergent and rinse aid pumped in accordance with the instructions issued by the liquid distribution module 4, achieving refined control of the washing process. This precise control method not only improves washing results but also reduces unnecessary energy and chemical consumption, making the dishwasher more energy-efficient and environmentally friendly while also extending its lifespan. The entire dishwashing process, from detection to distribution to real-time control, is managed in a closed-loop system. Each link is closely connected and synergistic, collectively enhancing the dishwasher's intelligence and washing efficiency. This provides users with a more convenient and efficient dishwashing experience, enabling precise control and intelligent management of the dishwasher's washing process. This not only improves washing efficiency and cleanliness, but also reduces energy and chemical consumption.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A special dishwasher liquid dispenser based on RS485 communication protocol, characterized by: It comprises a power supply module (1), a detection module (2), a liquid medicine distribution module (4) and a real-time control module (5), wherein: The power supply module (1) is connected to the mains electricity and is used to provide voltage; The detection module (2) is connected to the power supply module (1) and is used to detect whether there are dishes to be washed in the dishwashing tank of the current dishwasher. If so, the detection module performs quantitative detection and stain degree detection on the dishes to be washed, compares the detection results with the preset dishwashing standards, and generates and outputs a liquid dispensing signal and a time control signal. a communication module (3) connected to the output end of the detection module (2) and the input end of the liquid medicine distribution module (4), respectively, for receiving the liquid medicine distribution signal and the time control signal, and communicating the liquid medicine distribution signal and the time control signal to the liquid medicine distribution module (4); The liquid medicine dispensing module (4) is connected to the communication module (3), and is used to receive a liquid medicine dispensing signal and a time control signal, and determine a first dosage instruction corresponding to the detergent content and a second dosage instruction corresponding to the drying agent content according to the detergent content and the drying agent content in the liquid medicine dispensing signal, and determine a first time instruction corresponding to the detergent content and a second time instruction corresponding to the drying agent content according to the time control signal; The real-time control module (5) is connected to the liquid medicine dispensing module (4) and is used to receive the first dosage instruction, the second dosage instruction, the first time instruction, and the second time instruction, and control the start and stop duration of the peristaltic pump according to the first time instruction and the second time instruction, and control the content of the detergent and the drying agent pumped into the peristaltic pump according to the first dosage instruction and the second dosage instruction.

2. The dedicated dishwasher liquid dispenser based on RS485 communication protocol according to claim 1, characterized in that: The power supply module (1) comprises a bridge rectifier circuit (6) and a transformer T, wherein the primary side coil of the transformer T is connected to the mains, and the secondary side coil of the transformer T is connected to the AC input end of the bridge rectifier circuit (6).

3. The dedicated dishwasher liquid dispenser based on RS485 communication protocol according to claim 2, characterized in that: The detection module (2) includes an image acquisition device and an electronic device. The power supply ends of the image acquisition device and the electronic device are both connected to the output end of the bridge rectifier circuit (6). The output end of the image acquisition device is connected to the input section of the electronic device. The image acquisition device acquires images in the dishwashing tank and sends the acquired images in the tank to the electronic device for image recognition. The electronic device performs quantitative detection of the number of dishes to be washed and the degree of stains on the dishes to be washed based on the image features of the images in the tank. The electronic device compares the detection results after the detection is completed with the preset dishwashing standard, and generates and outputs a liquid dispensing signal and a time control signal.

4. The dedicated dishwasher liquid dispenser based on RS485 communication protocol according to claim 3, characterized in that: The communication module (3) includes an RS485 bus, which is connected to the signal output end of the electronic device and the signal input section of the liquid medicine dispensing module (4), and is used to receive the liquid medicine dispensing signal and the time control signal, and communicate the liquid medicine dispensing signal and the time control signal to the liquid medicine dispensing module (4).

5. The dedicated dishwasher liquid dispenser based on RS485 communication protocol according to claim 4, characterized in that: The liquid medicine dispensing module (4) comprises a signal converter, the input section of the signal converter being connected to the signal output section of the RS485 bus, for receiving a liquid medicine dispensing signal and a time control signal, and converting the liquid medicine dispensing signal into a first dosage instruction corresponding to the detergent content and a second dosage instruction corresponding to the drying agent content, and converting the time control signal into a first time instruction corresponding to the detergent content and a second time instruction corresponding to the drying agent content.

6. The dedicated dishwasher liquid dispenser based on RS485 communication protocol according to claim 4, characterized in that: The real-time control module (5) includes a PLC controller, which receives the first dosage instruction, the second dosage instruction, the first time instruction and the second time instruction, and after receiving the first time instruction, controls the peristaltic pump to start pumping a specified dosage of detergent into the dishwashing tank according to the first dosage instruction, and controls the peristaltic pump to stop operating after the specified dosage of detergent is pumped into the dishwashing tank. When receiving the second time instruction, it is determined whether the time node of the first time instruction meets the specified time node. If so, the peristaltic pump is controlled to start pumping a specified dosage of drying agent into the dishwashing tank according to the second dosage instruction, and controls the peristaltic pump to stop operating after the specified dosage of detergent is pumped into the dishwashing tank.

7. The dedicated dishwasher liquid dispenser based on RS485 communication protocol according to claim 6, characterized in that: The device further comprises a dosage detection module (7), wherein the dosage detection module (7) comprises a liquid level sensor, wherein the output end of the liquid level sensor is connected to the input end of the PLC controller, and the liquid level sensors are respectively arranged in a cleaning container containing the cleaning agent and a drying container containing the drying agent, and are used to detect the remaining content of the cleaning agent and the remaining content of the drying agent, and output a cleaning agent content signal and a drying agent content signal.

8. The dedicated dishwasher liquid dispenser based on RS485 communication protocol according to claim 7, characterized in that: The device further comprises an alarm module (8), wherein the alarm module (8) comprises an alarm, wherein a signal input end of the alarm is connected to a signal output end of a PLC controller. After receiving the detergent content signal and the drying agent content signal, the PLC controller respectively determines whether at least one of the detergent content in the detergent content signal and the drying agent content in the drying agent content signal does not meet a preset content. If so, an alarm instruction is generated and sent to the alarm. After receiving the alarm instruction, the alarm executes the alarm instruction in response to perform a remaining content alarm.

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