Inlet and return water temperature monitoring and feedback device for temperature controller
By introducing an inlet and return water temperature monitoring feedback device into the central air-conditioning thermostat, combined with intelligent algorithms and anti-cheating mechanisms, the problems of user cheating and control accuracy are solved, precise and energy-saving air-conditioning control is achieved, and comfort and operational reliability are improved.
Patent Information
- Application Number
- CN202510996402.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-09-12
AI Technical Summary
Existing central air conditioning thermostats have a low threshold for user cheating, rely on a single temperature control mechanism, resulting in high energy consumption and poor comfort, are unable to achieve precise linkage control, and are unable to intelligently change frequency based on the actual conditions of end users when installed independently.
An inlet and return water temperature monitoring and feedback device is used, including an inlet water temperature sensor, an outlet water temperature sensor, a room temperature sensor, and an infrared sensor. Real-time data transmission is carried out through intelligent algorithms and wireless communication modules. The control of fans and water valves is optimized in combination with the NSGA-II multi-objective genetic algorithm. An anti-cheating mechanism is set up and coordinated with the cloud monitoring module to achieve precise control and anti-dismantling protection.
It achieves the metering safety of central air conditioning, improves the control accuracy, reduces energy consumption, improves comfort, adapts to the personalized temperature adjustment of different rooms, prevents cheating, operates reliably and has significant energy-saving effects.
Smart Images
Figure CN120627375A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of heating / cooling control, and in particular to an inlet and return water temperature monitoring and feedback device for a thermostat. Background Art
[0002] The existing 86-type central air conditioning controller is installed on the 86-type switch and socket base box and consists of a control panel and a power panel. The control panel contains circuitry such as button interaction and LED display, while the power panel has relays and wiring terminals. The control principle is that a single-chip microcomputer calculates based on the user-set temperature and the measured indoor temperature, driving the power panel's relays to engage / disengage, thereby controlling the air conditioner's fan operation and the air and water valves. During installation, first connect the input power cable and the output air and water valve control lines to the power panel's wiring terminals. Then, secure the power panel to the 86-type power box with screws. Finally, attach the control panel using snaps.
[0003] However, the controller has obvious defects: first, users can bypass the billing system by short-circuiting the water valve and air valve wiring. The threshold for cheating is low, and it is difficult for operators to detect and avoid it, which brings operational difficulties and economic losses; second, it is unable to collect the inlet and return water temperatures of the air-conditioning water pipes. Temperature control relies on simple wind speed settings, and the automatic mode adjustment is based on a single basis, which cannot accurately link control, affecting physical comfort and high energy consumption; third, it is installed independently, and the host unit cannot intelligently change frequency according to the actual situation of the end user, resulting in high energy consumption or poor heating / cooling effects.
[0004] Therefore, there is an urgent need for a new type of inlet and return water temperature monitoring feedback device for thermostats to provide an effective solution to the defects of existing technologies. Summary of the Invention
[0005] The object of the present invention is to provide an inlet and return water temperature monitoring and feedback device for a thermostat to solve the problems raised in the above background technology.
[0006] To achieve the above object, the present invention provides the following technical solutions:
[0007] A temperature controller for inlet and return water temperature monitoring and feedback device, including a controller and a temperature monitoring unit: the temperature monitoring unit includes an inlet water temperature sensor, an outlet water temperature sensor, a room temperature sensor, and an infrared sensor, the inlet water temperature sensor, the outlet water temperature sensor, the room temperature sensor, and the infrared sensor are all electrically connected to the controller, and the controller is also electrically connected to the fan and the water valve; the inlet water temperature sensor and the outlet water temperature sensor are respectively installed on the outer walls of the inlet pipe and the outlet pipe of the fan coil; the room temperature sensor and the infrared sensor are arranged indoors; the temperature monitoring unit is arranged in partitions, and a temperature monitoring unit is arranged in each partition; the controller is provided with control units equal to the number of partitions, and each control unit controls the working status of the fan and the water valve in the partition; the control unit adopts an intelligent algorithm to perform frequency conversion control on the fan and steplessly adjust the opening and closing of the water valve according to the values of the inlet water temperature sensor, the outlet water temperature sensor, the room temperature sensor, and the infrared sensor.
[0008] Furthermore, the controller adopts an 86-type temperature controller housing.
[0009] Furthermore, the controller and the temperature monitoring unit transmit signals via a wireless communication module, and the room temperature sensor and the infrared sensor are installed in areas with high frequency of human activities.
[0010] Furthermore, the water inlet temperature sensor, water outlet temperature sensor, room temperature sensor, infrared sensor, fan and water valve all communicate with the cloud.
[0011] Furthermore, the water inlet temperature sensor, water outlet temperature sensor, room temperature sensor, and infrared sensor are all patch sensors.
[0012] Furthermore, the water inlet temperature sensor and the water outlet temperature sensor are equipped with built-in stress sensing diaphragms.
[0013] Furthermore, the cloud is provided with an abnormality monitoring module, which calculates whether there are abnormalities in water volume, wind speed, inlet water temperature, return water temperature, and room temperature values through big data and detection algorithms.
[0014] Furthermore, the intelligent algorithm simultaneously optimizes comfort and energy consumption, generates a Pareto optimal solution set through the NSGA-II multi-objective genetic algorithm, and dynamically selects the optimal wind speed and water flow.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. The present invention effectively solves the defects of traditional central air-conditioning thermostats in metering safety, control accuracy and system energy efficiency through the combination of hardware sensor network, intelligent control algorithm and anti-cheating mechanism. It is also highly adaptable, easy to install, reliable in operation and has significant energy-saving effects.
[0017] 2. In this invention, real-time data from each sensor and actuator is uploaded to the cloud via the IoT module. The cloud-based monitoring module establishes a dynamic model of water volume, wind speed, and temperature. Regression analysis is used to calculate the expected range of values. Real-time data is compared with the model's predicted values, flagging anomalies and triggering graded warnings.
[0018] 3. The water inlet / outlet temperature sensor of the present invention has a built-in stress-sensing diaphragm. When subjected to abnormal external force or disassembly, the diaphragm senses the deformation and triggers the internal circuit to generate an alarm signal. At the same time, it continuously monitors temperature changes for double verification, realizing anti-dismantling protection and cheating warning functions. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a principle block diagram of an inlet and return water temperature monitoring and feedback device for a thermostat. DETAILED DESCRIPTION
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] Example 1: Please refer to Figure 1 , a temperature controller for inlet and return water temperature monitoring and feedback device, including a controller, a temperature monitoring unit: the temperature monitoring unit includes an inlet water temperature sensor, an outlet water temperature sensor, a room temperature sensor, and an infrared sensor, the inlet water temperature sensor, the outlet water temperature sensor, the room temperature sensor, and the infrared sensor are all electrically connected to the controller, and the controller is also electrically connected to the fan and the water valve; the inlet water temperature sensor and the outlet water temperature sensor are respectively installed on the outer walls of the inlet pipe and the outlet pipe of the fan coil; the room temperature sensor and the infrared sensor are arranged indoors; the temperature monitoring unit is divided into zones, and a temperature monitoring unit is arranged in each zone; the controller is provided with control units equal to the number of zones, and each control unit controls the working status of the fan and the water valve in the zone; the control unit adopts an intelligent algorithm to perform variable frequency control on the fan and steplessly adjust the opening and closing of the water valve according to the values of the inlet water temperature sensor, the outlet water temperature sensor, the room temperature sensor, and the infrared sensor.
[0022] The controller uses an 86-type thermostat housing.
[0023] Signals are transmitted between the controller and the temperature monitoring unit through a wireless communication module, and room temperature sensors and infrared sensors are installed in areas with high frequency of human activities.
[0024] The water inlet temperature sensor, water outlet temperature sensor, room temperature sensor, and infrared sensor are all patch sensors.
[0025] The intelligent algorithm optimizes both comfort and energy consumption, generates a Pareto optimal solution set through the NSGA-II multi-objective genetic algorithm, and dynamically selects the optimal wind speed and water flow.
[0026] Working principle of this embodiment:
[0027] This embodiment is an innovative upgrade based on the traditional 86-type central air-conditioning controller. By adding inlet and return water temperature monitoring, intelligent algorithm optimization and anti-cheating functions, it achieves accurate, efficient and safe air-conditioning control.
[0028] In this embodiment, high-precision surface-mount temperature sensors are installed on the outer walls of the fan coil unit's water inlet and return pipes to monitor the inlet and outlet temperatures of the chilled water in real time. Furthermore, room temperature sensors and infrared sensors are placed in areas of high indoor activity to comprehensively collect data on ambient temperature and occupant presence. The sensors transmit data to the controller in real time via wired (e.g., RS485 bus) or wireless (e.g., Wi-Fi, Zigbee) channels, providing data support for intelligent decision-making.
[0029] The controller utilizes the advanced NSGA-II multi-objective optimization algorithm, comprehensively analyzing multi-dimensional data such as inlet water temperature, return water temperature, indoor temperature, set point temperature, and occupant activity status, to dynamically calculate the optimal control strategy. The system offers two operating modes: Rapid Heating / Cooling mode, which automatically uses the most efficient air speed and water valve opening to ensure the set point temperature is reached in the shortest possible time when rapid temperature adjustment is required. Comfort mode, which intelligently adjusts the temperature profile to ensure a smooth transition between indoor and outdoor temperatures, significantly enhancing human comfort.
[0030] To address the vulnerability of traditional systems to cheating by users shorting circuits, this embodiment monitors the inlet and return water temperature difference in real time. If a significant temperature difference is detected but system metering is not enabled, it automatically identifies cheating. Once the system confirms cheating, it automatically limits the operating power of the equipment and sends an alert to management via the cloud platform, effectively protecting the operator's interests.
[0031] For multi-room applications, this embodiment supports independent zone control. Each functional area is equipped with an independent temperature monitoring unit and control unit, enabling personalized temperature adjustment for each room. Air conditioning can be automatically shut off in unoccupied areas, further optimizing energy efficiency.
[0032] This embodiment effectively solves the defects of traditional central air-conditioning thermostats in metering safety, control accuracy and system energy efficiency through the combination of hardware sensor networks, intelligent control algorithms and anti-cheating mechanisms. It also has high adaptability, easy installation, reliable operation and significant energy-saving effects.
[0033] Example 2: Please refer to Figure 1, a device for monitoring and feedback of inlet and return water temperature for a thermostat, which differs from Example 1 in that the inlet water temperature sensor, outlet water temperature sensor, room temperature sensor, infrared sensor, fan and water valve all communicate with the cloud.
[0034] An abnormality monitoring module is set up in the cloud, which uses big data and detection algorithms to calculate whether there are any abnormalities in water volume, wind speed, inlet water temperature, return water temperature, and room temperature.
[0035] Working principle of this embodiment:
[0036] In this embodiment, real-time data from various sensors (inlet / return water temperature, room temperature, infrared) and actuators (fans, water valves) are uploaded to the cloud via the IoT module. The cloud-based monitoring module establishes a dynamic model of water volume, wind speed, and temperature. Regression analysis can be used to calculate the expected range of values. Real-time data is compared with the model's predicted values, and anomalies are flagged. For example, water temperature changes do not match fan speed (e.g., high wind speed but ΔT < 1°C); water valve opening and flow data are inconsistent; or there is a person present but no equipment operating signal. When anomalies persist beyond the threshold, a graded warning (recording / power limiting / remote power outage) is triggered.
[0037] Example 3: Please refer to Figure 1 , a temperature controller for monitoring the inlet and return water temperature feedback device, the difference from Example 1 is that the inlet water temperature sensor and the outlet water temperature sensor are built-in stress sensing diaphragms.
[0038] Working principle of this embodiment:
[0039] In this embodiment, the inlet / outlet water temperature sensor has a built-in stress-sensing diaphragm. When subjected to abnormal external force or disassembly, the diaphragm senses the deformation and triggers the internal circuit to generate an alarm signal. At the same time, it continuously monitors temperature changes for double verification (such as sudden temperature changes caused by disassembly). Once an abnormality is confirmed, the metering data is immediately frozen and the backup storage is started. At the same time, the positioning information and alarm code are uploaded to the cloud to realize anti-dismantling protection and cheating warning functions.
Claims
1. A temperature controller inlet and return water temperature monitoring feedback device, characterized in that: Including controller, temperature monitoring unit: The temperature monitoring unit includes an inlet water temperature sensor, an outlet water temperature sensor, a room temperature sensor, and an infrared sensor. The inlet water temperature sensor, the outlet water temperature sensor, the room temperature sensor, and the infrared sensor are all electrically connected to the controller, and the controller is also electrically connected to the fan and the water valve; the inlet water temperature sensor and the outlet water temperature sensor are respectively installed on the outer walls of the inlet pipe and the outlet pipe of the fan coil; the room temperature sensor and the infrared sensor are set indoors; The temperature monitoring units are divided into zones, with a temperature monitoring unit in each zone; the controller is provided with control units equal in number to the zones, and each control unit controls the working status of the fan and water valve in the zone; the control unit uses an intelligent algorithm to perform variable frequency control on the fan and stepless adjustment on the opening and closing of the water valve according to the values of the inlet water temperature sensor, the outlet water temperature sensor, the room temperature sensor, and the infrared sensor.
2. The inlet and return water temperature monitoring and feedback device for a thermostat according to claim 1, characterized in that: The controller adopts an 86-type temperature controller housing.
3. The inlet and return water temperature monitoring and feedback device for a thermostat according to claim 1, characterized in that: The controller and the temperature monitoring unit transmit signals via a wireless communication module, and room temperature sensors and infrared sensors are installed in areas with high human activity frequencies.
4. The inlet and return water temperature monitoring and feedback device for a thermostat according to claim 1, characterized in that: The water inlet temperature sensor, water outlet temperature sensor, room temperature sensor, infrared sensor, fan and water valve all communicate with the cloud.
5. The inlet and return water temperature monitoring and feedback device for a thermostat according to claim 1, characterized in that: The water inlet temperature sensor, water outlet temperature sensor, room temperature sensor and infrared sensor are all patch sensors.
6. The inlet and return water temperature monitoring and feedback device for a thermostat according to claim 5, characterized in that: The water inlet temperature sensor and the water outlet temperature sensor are built-in with stress sensing diaphragms.
7. The inlet and return water temperature monitoring and feedback device for a thermostat according to claim 4, characterized in that: The cloud is provided with an abnormality monitoring module, which calculates whether there are abnormalities in water volume, wind speed, inlet water temperature, return water temperature, and room temperature values through big data and detection algorithms.
8. The inlet and return water temperature monitoring and feedback device for a thermostat according to claim 1, characterized in that: The intelligent algorithm optimizes comfort and energy consumption simultaneously, generates a Pareto optimal solution set through the NSGA-II multi-objective genetic algorithm, and dynamically selects the optimal wind speed and water flow.