CN-121993986-A - Commercial refrigerator heat exchange module automatic control system adopting intelligent control of double electric actuators

CN121993986ACN 121993986 ACN121993986 ACN 121993986ACN-121993986-A

Abstract

The invention discloses a commercial refrigerator heat exchange module automatic control system adopting intelligent control of double electric actuators, which comprises a data acquisition module, a VPU-24 controller, a double electric actuator and a remote monitoring terminal, wherein the output end of the data acquisition module is connected with the input end of the VPU-24 controller, the output end of the VPU-24 controller is connected with the double electric actuator and the remote monitoring terminal, the VPU-24 controller comprises a data receiving module, a data analysis module, a central regulation module, a communication unit, a power supply module, a mode selection module and a display informing module, the output end of the data receiving module is connected with the input end of the data analysis module, the output end of the data analysis module, the mode selection module and the output end of the power supply module are connected with the input end of the central regulation module, and the output end of the display informing module is connected with the input end of the communication unit.

Inventors

TANG WENJUN
TANG TANG
LIU YUECHENG
TANG YANPING

Assignees

湖南绿零智能科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251210

Claims (7)

1. A commercial refrigerator heat exchange module automatic control system adopting intelligent control of double electric actuators is characterized by comprising: The data acquisition module acquires pressure, temperature and flow data of the commercial refrigerator heat exchange module through the flowmeter, the temperature sensor and the pressure sensor, wherein the temperature data comprise water inlet temperature, water outlet temperature and outdoor environment temperature of a primary network and a secondary network, the pressure data comprise water supply pressure and water return pressure of the primary network and the secondary network, and the flow data comprise circulating water flow of the primary network and the secondary network; The VPU-24 controller generates a control instruction according to received data to control the action of the dual-electric actuator, the VPU-24 controller comprises a data receiving module, a data analysis module, a central control module, a communication unit, a power module, a mode selection module and a display informing module, the data receiving module is used for receiving data information of the commercial refrigerator heat exchange module acquired by the data acquisition module, the data analysis module is used for analyzing and processing the received data as a basis of control decision, the central control module executes control logic according to the analysis result of the data analysis module and generates a control signal to control the dual-electric actuator, the communication unit is used for communication between the VPU-24 controller and a remote monitoring terminal, the power module provides a working power supply for the VPU-24 controller, the mode selection module is used for selecting a working mode of the commercial refrigerator heat exchange module and selecting the electric actuator to adjust, the display informing module is used for displaying the valve opening of the electric actuator, the output end of the data receiving module is connected with the input end of the data analysis module, and the output end of the data analysis module is connected with the input end of the central control module, and the output end of the central control module is connected with the input end of the control module; The dual-electric actuator comprises two electric actuating valves, wherein the electric actuating valves are connected in parallel to realize flow or pressure output with a ladder characteristic, the electric actuating valves receive control instructions of a VPU-24 controller, and the opening degree of the valves is driven by the rotation of a motor so as to realize the adjustment of flow, pressure and temperature; the remote monitoring terminal is used for receiving the data of the VPU-24 controller, remotely monitoring and managing the commercial refrigerator heat exchange module and checking the running state and parameter data of the heating system in real time; The output end of the data acquisition module is connected with the input end of the VPU-24 controller, and the output end of the VPU-24 controller is connected with the dual-electric actuator and the remote monitoring terminal.
2. The automatic control system of the commercial refrigerator heat exchange module adopting intelligent control of the double electric actuators according to claim 1, wherein the central control module comprises an instruction generating unit, an instruction executing unit and a feedback adjusting unit, the instruction generating unit generates a control instruction according to the real-time state of the commercial refrigerator heat exchange module and adjusts the control quantity through a stepped fuzzy control algorithm model, the stepped fuzzy control algorithm model divides a control range step according to a control target and adjusts the control quantity according to the control range step where the control target is located, the instruction executing unit receives the generated control instruction and converts the control instruction into a control signal to be sent to the double electric actuators to execute the control instruction, the feedback adjusting unit receives a feedback signal from a sensor and monitors the actual running state of the automatic control system of the commercial refrigerator heat exchange module, the feedback signal is compared with a preset target value, the control instruction is adjusted according to the comparison result to realize closed-loop control, and the output end of the instruction generating unit is connected with the input end of the instruction executing unit and the input end of the feedback adjusting module.
3. The automatic control system of the commercial refrigerator heat exchange module adopting intelligent control of the double electric actuators according to claim 1, wherein the workflow of the stepped fuzzy control algorithm model is as follows: Step (1), dividing the range of steps of sensor information data of a commercial refrigerator heat exchange module according to a control target, determining the boundary of each step by a preset threshold value, and comparing the real-time sensor information data of the commercial refrigerator heat exchange module with the preset threshold value to determine the step of the current commercial refrigerator heat exchange module automatic control system; Step (2), fusing the multi-sensor data information received by the data acquisition module; calculating the output value of the multi-sensor information clustering process to perform characteristic information screening, wherein the calculation formula is as follows: (1) In the case of the formula (1), Characteristic output values representing the clustering process of the multi-sensor information, Indicating that the sensor confidence factor is to be used, Representing the weight factor of the corresponding sensor, Indicating the center point of the sensor, In order to determine the amount of sensor data, Indicating the number of sensors to be used, Is a sensor data quality factor; The fused multi-sensor data calculation expression is: (2) in the formula (2) of the present invention, Weights representing the characteristic information of the sensor, Representation sensor Is used for the precision factor of (a), Is used for the reliability factor of (a), Representing the data detected by the sensor(s), Characteristic output values representing the clustering process of the multi-sensor information, The information is output after the fusion is represented, Representing the number of sensors; Step (3), carrying out fuzzification processing on an input variable, converting the input variable into a fuzzy quantity in a fuzzy set, taking the fused multi-sensor information data error and the error change rate as the input variable, and taking the variable of the opening degree of a valve of an electric actuator as an output variable, wherein the fuzzy set of the input variable is as follows: (3) in the formula (3) of the present invention, The error and the rate of change of the error are expressed respectively, Respectively representing negative big, negative middle, negative small, zero, positive small, median and positive big; the fuzzy set of output variables is: (4) In the formula (4) of the present invention, The opening degree variation amounts of the No. 1 electric actuator valve and the No. 2 electric actuator valve are respectively shown, Respectively representing negative big, negative medium, negative small, zero, positive small, medium and positive big, and representing the degree to which the opening of the valve should be increased or decreased; Step (4), using a membership function to describe the membership degree of the input data in each step; the membership function expression is: (5) In the formula (5) of the present invention, In order to input the data it is possible, Is the center point of the membership function, For the width of the membership function, Representing a proportional gain for adjusting the width of the membership function; Step (5), establishing a fuzzy library rule for the step, wherein the fuzzy library rule is used for describing a fuzzy relation between an input variable and an output variable; step (6), fuzzy reasoning is carried out, fuzzy reasoning operation is carried out according to an input variable and a fuzzy rule base of the automatic control system of the commercial refrigerator heat exchange module, fuzzy rules are matched through fuzzy logic operation, and fuzzy quantity of an output variable is calculated; step (7), defuzzification is carried out, the fuzzy quantity of the output variable obtained by fuzzy reasoning is subjected to defuzzification treatment and is converted into a control quantity so as to generate a control instruction; The defuzzification calculation expression is: (6) In the formula (6) of the present invention, F is fuzzy quantized value, n is output quantity number, As the weight factor of the weight factor, As a result of the initial input value(s), In order to shift the coherence coefficient, As an amount of the offset to be used, Is a constant value between 0 and 1, For measuring the importance of the initial input value.
4. The intelligent control system for the commercial refrigerator heat exchange module adopting the double electric actuators is characterized in that a display informing module of the VPU-24 controller correspondingly displays valve openings of two electric execution valves through two four-digit display tubes, the mode selecting module integrates five keys, namely a full-automatic key, a full-automatic operation key, a manual operation key of a valve No. 1 and a manual operation key of a valve No. 2, wherein the full-automatic key and the manual key determine the operation mode of the intelligent control system for the commercial refrigerator heat exchange module, and the selected electric execution valves can be adjusted after the manual key is pressed down.
5. The automatic control system of the commercial refrigerator heat exchange module adopting intelligent control of the double electric actuators is characterized in that the double electric actuators are arranged on a primary line water return pipeline of the commercial refrigerator heat exchange module, the double electric actuators comprise a No. 1 electric actuator valve and a No. 2 electric actuator valve, the opening of the valve is regulated in a parallel structure in a sub-control mode, the valve opening is regulated in a sectionalized mode according to control instructions and a step characteristic curve, the electric actuator valve comprises a motor, a speed reducer, a transmission mechanism and a position feedback device, the motor is used as a power source, the transmission mechanism is started and driven to act according to the control instructions, the transmission mechanism converts rotary motion of the motor into rotary motion of the valve so as to change the opening of the valve, the speed reducer reduces the rotation speed of the motor and increases torque, and the position feedback device is used for monitoring the actual opening of the valve in real time and feeding back the actual opening information of the valve to the VPU-24 controller in the form of an electric signal.
6. The intelligent control commercial refrigerator heat exchange module automatic control system adopting the double electric actuators according to claim 1, wherein the VPU-24 comprises two paths of input and two paths of output, the precision level is 0.5, and the height, the orientation, the front-rear pitch angle and the left-right pitch angle of the matched fixing piece are all adjustable.
7. The automatic control system of the commercial refrigerator heat exchange module adopting intelligent control of the double electric actuators according to claim 3 is characterized in that the water temperature step is divided into extremely low water temperature of less than 30 ℃, low water temperature of less than 30 ℃ and less than 45 ℃, medium water temperature of less than 45 ℃ and less than 60 ℃, high water temperature of less than 60 ℃ and less than 75 ℃ and extremely high water temperature of more than or equal to 75 ℃; The pressure data is divided into extremely low pressure of 0.1Mpa or less, wherein at the moment, whether leakage exists or not is checked, pressure compensation is needed, the low pressure is 0.1Mpa Mpa or less, the medium pressure is 0.4Mpa or less, the pressure is 0.8Mpa or less, the high pressure is 0.8: 0.8Mpa Mpa or less, the pressure is 1.2Mpa or less, and the extremely high pressure is 1.2: 1.2 Mpa; The flow step is divided into minimum flow rate less than or equal to 10m3/h, small flow rate less than or equal to 10m3/h, medium flow rate less than or equal to 50m3/h, 200m3/h, large flow rate less than or equal to 500m3/h, and maximum flow rate more than 500m 3/h.

Description

Commercial refrigerator heat exchange module automatic control system adopting intelligent control of double electric actuators Technical Field The invention relates to the technical field of heat supply control, in particular to a commercial refrigerator heat exchange module automatic control system intelligently controlled by adopting double electric actuators. Background Many commercial freezers still employ traditional switch controls and simple relay controls, lacking precise temperature and humidity control. The modern commercial refrigerator generally adopts a microcontroller as a core control unit, and the accurate control of parameters such as temperature, humidity, air quantity and the like is realized through an embedded system. The sensor used is low in precision and cannot accurately reflect the temperature and humidity changes in the refrigerator in real time. The refrigerator has low energy efficiency ratio, so that the energy consumption is high and the operation cost is high. When the operation conditions of the commercial refrigerator heat exchange module of the refrigerator change, parameters such as temperature, pressure, flow and the like fluctuate, an automatic control system can not respond to the changes in time, so that the adjustment is not in time, and the refrigeration effect of the refrigerator is affected. The regulation precision of the automatic control system is insufficient, so that the temperature fluctuation in the refrigerator is possibly large, the refrigerator cannot be stabilized near a set value, and the quality and the fresh-keeping effect of stored foods are affected. Therefore, the invention discloses a commercial refrigerator heat exchange module automatic control system intelligently controlled by adopting double electric actuators. Disclosure of Invention Aiming at the defects of the technology, the invention discloses a commercial refrigerator heat exchange module automatic control system adopting intelligent control of a double electric actuator, which receives sensor data through a VPU-24 controller and generates a control instruction to control the action of the double electric actuator, and realizes high-precision wide-area adjustment of the commercial refrigerator heat exchange module through a two-step ladder characteristic parallel electric actuator valve. The invention adopts the following technical scheme: An intelligent control commercial refrigerator heat exchange module automatic control system adopting double electric actuators, comprising: The data acquisition module acquires pressure, temperature and flow data of the commercial refrigerator heat exchange module through the flowmeter, the temperature sensor and the pressure sensor, wherein the temperature data comprise water inlet temperature, water outlet temperature and outdoor environment temperature of a primary network and a secondary network, the pressure data comprise water supply pressure and water return pressure of the primary network and the secondary network, and the flow data comprise circulating water flow of the primary network and the secondary network; The VPU-24 controller generates a control instruction according to received data to control the action of the dual-electric actuator, the VPU-24 controller comprises a data receiving module, a data analysis module, a central control module, a communication unit, a power module, a mode selection module and a display informing module, the data receiving module is used for receiving data information of the commercial refrigerator heat exchange module acquired by the data acquisition module, the data analysis module is used for analyzing and processing the received data as a basis of control decision, the central control module executes control logic according to the analysis result of the data analysis module and generates a control signal to control the dual-electric actuator, the communication unit is used for communication between the VPU-24 controller and a remote monitoring terminal, the power module provides a working power supply for the VPU-24 controller, the mode selection module is used for selecting a working mode of the commercial refrigerator heat exchange module and selecting the electric actuator to adjust, the display informing module is used for displaying the valve opening of the electric actuator, the output end of the data receiving module is connected with the input end of the data analysis module, and the output end of the data analysis module is connected with the input end of the central control module, and the output end of the central control module is connected with the input end of the control module; The dual-electric actuator comprises two electric actuating valves, wherein the electric actuating valves are connected in parallel to realize flow or pressure output with a ladder characteristic, the electric actuating valves receive control instructions of a VPU-24 controller, and the opening degree of the v