Remote intelligent air cooling control system and method

Abstract

The invention relates to the technical field of air cooling control, and discloses a remote intelligent air cooling control system and method.The system comprises a remote unit, a serial port unit, a server unit, an upper monitoring unit and a frequency conversion unit, the remote unit communicates with the serial port unit by adopting a first network protocol, the serial port unit is configured to convert the first network protocol into a second network protocol, and the server unit is configured to adopt the second network protocol, read a target signal by adopting control logic configuration and send the target signal to the upper monitoring unit; the upper monitoring unit is configured to monitor a pressure signal of a heat power measuring point, convert the pressure signal into an air cooling back pressure value and determine a target back pressure value based on a back pressure compensation factor, and the frequency conversion unit is configured to obtain a control signal and determine a frequency conversion mode. The system has the characteristics of good remote communication and dynamic adjustment of the motor state.

Description

Technical Field

[0001] The present invention relates to the technical field of air cooling control, and in particular to a remote intelligent air cooling control system and method. Background Art

[0002] Direct air cooling equipment is often used in conventional thermal power generation and new energy power generation projects. Its main function is to cool the exhaust steam after the turbine works. The traditional way to control air cooling equipment is to set up multiple control wiring cabinets on the air cooling platform of dozens of meters. The sensors of all thermal measurement points on the platform are connected to different control wiring cabinets through hard wiring, and then transferred to the server through the wiring cabinet. Since they are all hard-wired, a large number of computer shielded cables and cable trays are required, which increases the failure rate of air cooling equipment. In addition, traditional air cooling fans cannot effectively handle the back pressure of air cooling equipment and cannot intelligently adjust the motor operation status of air cooling fans.

[0003] Therefore, how to provide a remote intelligent air cooling control system and method is a technical problem that technical personnel in this field need to solve urgently. Summary of the invention

[0004] In view of this, the present invention proposes a remote intelligent air cooling control system and method, aiming to solve the problems that the current control of air cooling equipment requires a large number of computer shielded cables and cable trays, the signal cannot be processed remotely, and the motor of the air cooling fan cannot be effectively and reasonably adjusted according to the pressure signal.

[0005] In one aspect, the present invention provides a remote intelligent air cooling control system, comprising:

[0006] Remote unit, serial port unit, server unit, upper monitoring unit and frequency conversion unit;

[0007] The remote unit is configured to obtain a signal from a thermal power measurement point, pre-process the signal to obtain a target signal, and send the target signal to the serial port unit. The remote unit and the serial port unit communicate with each other using a first network protocol.

[0008] The serial port unit is configured to convert the first network protocol into a second network protocol and send the target signal to the server unit;

[0009] The server unit is configured to adopt the second network protocol, establish a network address and a corresponding port number with the serial port unit, and adopt a control logic configuration to read the target signal and send it to the upper monitoring unit;

[0010] The upper monitoring unit is configured to monitor the pressure signal of the thermal power measuring point and convert it into an air cooling back pressure value, compare the air cooling back pressure value with a historical air cooling back pressure value, and determine whether to correct the air cooling back pressure value according to the comparison result;

[0011] When it is determined that the air-cooling back pressure value is to be corrected, the air-cooling back pressure value is similarly compared with the historical air-cooling back pressure value, a back pressure compensation factor is determined according to the back pressure similarity, and a target back pressure value is determined based on the back pressure compensation factor;

[0012] The upper monitoring unit compares the target back pressure value with the back pressure alarm value, and sends a corresponding control signal to the frequency conversion unit according to the comparison result;

[0013] The frequency conversion unit is configured to obtain the control signal and determine a frequency conversion mode, and drive the motor of the air-cooling fan to operate based on the frequency conversion mode.

[0014] Further, when the signal is preprocessed to obtain a target signal, the target signal is sent to the serial port unit, and the remote unit and the serial port unit communicate using a first network protocol, the method includes:

[0015] Preprocessing the signal, wherein the preprocessing includes signal filtering, signal cleaning and standardization;

[0016] The first network protocol uses the MODBUS RTU communication protocol.

[0017] Further, the serial port unit is configured to convert the first network protocol into a second network protocol, including:

[0018] The second network protocol uses MODBUS TCP / IP communication protocol;

[0019] The serial port unit receives the target signal, encapsulates the target signal according to the MODBUS RTU communication protocol format, and sends the encapsulated packet to the server unit according to the MODBUS TCP / IP communication protocol.

[0020] Further, the server unit is configured to adopt the second network protocol, and establish a network address and a corresponding port number with the serial port unit, and adopt a control logic configuration to read the target signal and send it to the upper monitoring unit, including:

[0021] The server unit starts a TCP server program, monitors the TCP / IP address and port number of the serial port unit, and waits for a connection request from the serial port unit;

[0022] When receiving the connection request from the serial port unit, the server unit establishes a communication connection with the serial port unit through the TCP server program, transmits the encapsulation packet from the serial port unit to the control logic configuration, and the control logic configuration parses the encapsulation packet and sends it to the upper monitoring unit.

[0023] Further, when comparing the air cooling back pressure value with the historical air cooling back pressure value and judging whether to correct the air cooling back pressure value according to the comparison result, it includes:

[0024] When the air-cooling back pressure value is less than the minimum value of the historical air-cooling back pressure values, it is determined to correct the air-cooling back pressure value;

[0025] When the air-cooling back pressure value is greater than or equal to the minimum value of the air-cooling back pressure value, it is determined that the air-cooling back pressure value is not to be corrected, and the air-cooling back pressure value is determined as the target back pressure value.

[0026] Further, when the air-cooling back pressure value is similarly compared with the historical air-cooling back pressure value, a back pressure compensation factor is determined according to the back pressure similarity, and a target back pressure value is determined based on the back pressure compensation factor, the method includes:

[0027] The ratio of the air-cooling back pressure value to the minimum value of the historical air-cooling back pressure values ​​is determined as the back pressure similarity, and the back pressure similarity is recorded as T;

[0028] presetting a first preset backpressure compensation factor, a second preset backpressure compensation factor, and a third preset backpressure compensation factor;

[0029] When T≤0.3, the first preset back pressure compensation factor is used as the back pressure compensation factor of the air cooling back pressure value;

[0030] When 0.3<T≤0.7, the second preset back pressure compensation factor is used as the back pressure compensation factor of the air cooling back pressure value;

[0031] When 0.7<T, the third preset back pressure compensation factor is used as the back pressure compensation factor of the air cooling back pressure value;

[0032] The product value of the back pressure compensation factor and the air cooling back pressure value is determined as the target back pressure value.

[0033] Furthermore, when the upper monitoring unit compares the target back pressure value with the back pressure alarm value and sends a corresponding control signal to the frequency conversion unit according to the comparison result, it includes:

[0034] When the target back pressure value is less than the back pressure alarm value, the upper monitoring unit sends a first control signal;

[0035] When the target back pressure value is greater than the back pressure alarm value, the upper monitoring unit sends a second control signal;

[0036] The second control signal includes a deceleration signal and a stop signal.

[0037] Further, the frequency conversion unit is configured to obtain the control signal and determine the frequency conversion mode, including:

[0038] When the frequency conversion unit obtains the first control signal, the frequency conversion mode is adjusted to the maintenance mode;

[0039] When the frequency conversion unit obtains the second control signal, the frequency conversion mode is adjusted to a deceleration or stop mode.

[0040] Furthermore, the remote intelligent air cooling control system includes:

[0041] The communication protocol between the server unit and the frequency conversion unit is Profi net, and the server unit obtains all function codes of the frequency conversion unit in real time;

[0042] The frequency conversion unit establishes a network communication GSD file and places it into the server unit;

[0043] The frequency conversion unit is set to manual control and automatic control.

[0044] Compared with the prior art, the beneficial effects of the present invention are: through the remote unit, the serial port unit, and the server unit, the signals of the thermal measuring points are remotely collected, transmitted, and analyzed, and there is no need to connect multiple control wiring cabinets to process the signals of the thermal measuring points, which saves the cables connected between them. The failure rate of the air-cooling equipment is reduced, the serial port unit realizes the conversion of different Ethernet communication protocols, and enhances the network adaptability of the system. The server unit accurately reads the target signal based on the control logic configuration, and provides reliable data support for the back pressure analysis and decision-making of the subsequent upper monitoring unit, which improves the remote level of the system. The upper monitoring unit ensures the dynamic correction and real-time optimization of the air-cooling back pressure value, and provides comprehensive operation data by real-time monitoring of the operation status of the entire system, which is convenient for fault diagnosis and remote management, so that the system has efficient data processing capabilities, intelligent control strategies and stable operation performance, which is helpful to improve the motor operation efficiency of the air-cooling fan. The frequency conversion unit flexibly adjusts the motor operation status of the air-cooling fan according to the control signal sent by the upper monitoring unit, ensuring the stability of the motor operation and energy-saving effect.

[0045] On the other hand, the present application also provides a remote intelligent air cooling control method for applying the above remote intelligent air cooling control system, comprising:

[0046] Acquiring a signal from a thermal power measurement point, and preprocessing the signal to obtain a target signal;

[0047] Converting a first network protocol to a second network protocol;

[0048] Using the second network protocol, establishing a network address and a corresponding port number, and using control logic configuration to read the target signal;

[0049] Monitor the pressure signal of the thermal power measuring point and convert it into an air cooling back pressure value, compare the air cooling back pressure value with a historical air cooling back pressure value, and determine whether to correct the air cooling back pressure value according to the comparison result;

[0050] When it is determined that the air-cooling back pressure value is to be corrected, the air-cooling back pressure value is similarly compared with the historical air-cooling back pressure value, a back pressure compensation factor is determined according to the back pressure similarity, and a target back pressure value is determined based on the back pressure compensation factor;

[0051] Comparing the target back pressure value with the back pressure alarm value, and issuing a corresponding control signal according to the comparison result;

[0052] The control signal is acquired and a frequency conversion mode is determined, and a motor of the air cooling fan is driven to operate based on the frequency conversion mode.

[0053] It is understandable that the above-mentioned remote intelligent air cooling control system and method have the same beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0055] Figure 1 A structural block diagram of a remote intelligent air cooling control system provided by an embodiment of the present invention;

[0056] Figure 2 A flow chart of a remote intelligent air cooling control method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0058] In some embodiments of the present application, see Figure 1 As shown, a remote intelligent air cooling control system includes: a remote unit, a serial port unit, a server unit, an upper monitoring unit and a frequency conversion unit. The remote unit is configured to obtain a signal from a thermal power measurement point, and pre-process the signal to obtain a target signal, and send the target signal to the serial port unit. The remote unit and the serial port unit communicate with each other using a first network protocol. The serial port unit is configured to convert the first network protocol into a second network protocol, and send the target signal to the server unit. The server unit is configured to use the second network protocol, and establish a network address and a corresponding port number with the serial port unit, and use a control logic configuration to read the target signal and send it to the upper monitoring unit. The upper monitoring unit The unit is configured to monitor the pressure signal of the thermal power measurement point and convert it into an air cooling back pressure value, compare the air cooling back pressure value with the historical air cooling back pressure value, and determine whether to correct the air cooling back pressure value based on the comparison result. When it is determined that the air cooling back pressure value is to be corrected, the air cooling back pressure value is similarly compared with the historical air cooling back pressure value, and a back pressure compensation factor is determined based on the back pressure similarity. The target back pressure value is determined based on the back pressure compensation factor. The upper monitoring unit compares the target back pressure value with the back pressure alarm value, and sends a corresponding control signal to the frequency conversion unit based on the comparison result. The frequency conversion unit is configured to obtain the control signal and determine the frequency conversion mode, and drive the motor of the air cooling fan to operate based on the frequency conversion mode.

[0059] Specifically, the remote unit is responsible for obtaining and preprocessing the signals of the thermal power measurement point. The signals of the thermal power measurement point include temperature, pressure and vibration signals. The remote unit preprocesses the signals of the thermal power measurement point to ensure the accuracy and reliability of the transmission target signal. By adopting the first network protocol, the remote unit and the serial port unit can communicate stably and efficiently. Ethernet is a common communication form in industrial automation, with the characteristics of fast transmission speed, high bandwidth and strong reliability. It can ensure that the transmission process of the target signal between the remote unit and the serial port unit is not interfered, support remote management of the target signal and real-time data exchange, and improve the level of remoteness. The serial port unit converts the first network protocol of the remote unit into the second network protocol, and has good compatibility and network expansion capabilities. The server unit is the core of the system and is responsible for receiving the target signal from the serial port unit. The control logic configuration processes the target signal through built-in algorithms and rules, ensuring that the system can accurately parse the target signal and send it to the upper monitoring unit, laying a data support for the judgment of the upper monitoring unit. The upper monitoring unit is responsible for monitoring the pressure signal of the thermal power measurement point. Through the analysis of the control logic configuration, the upper monitoring unit intelligently analyzes and converts the pressure signal into the corresponding air-cooling back pressure value. The upper monitoring unit compares the converted air-cooling back pressure value with the historical air-cooling back pressure value to determine whether the current air-cooling back pressure value is within a reasonable range. If it is found that there is a large difference between the current air-cooling back pressure value and the historical air-cooling back pressure value, the back pressure correction mechanism will be triggered. The similarity algorithm is used to compare the air-cooling back pressure value and the historical air-cooling back pressure value to determine the degree of similarity between the two. The back pressure compensation factor is set according to the back pressure similarity, and then the air-cooling back pressure value is corrected, which improves the accuracy and reliability of the target back pressure value. After the correction is completed, the upper monitoring unit compares the target back pressure value with the back pressure alarm value. The back pressure alarm value is the rated standard back pressure value of the air-cooling fan. The upper monitoring unit sends a corresponding control signal based on the judgment result to decide how to adjust the motor operation state of the air-cooling fan to change the back pressure of the air-cooling fan. The frequency conversion unit is responsible for receiving the control signal sent by the upper monitoring unit and adjusting the corresponding frequency conversion mode, thereby changing the speed of the motor to prevent the air cooling fan from being damaged during operation.

[0060] It is understandable that the remote unit, serial port unit and server unit realize the function of remote signal processing, avoiding the connection of thermal measurement points to different control wiring cabinets through hard wiring, and then transferring to the server unit through the wiring cabinet, saving cables while improving the smoothness of system operation. The upper monitoring unit and frequency conversion unit improve the flexibility of intelligent adjustment of the air-cooling fan motor, and the upper monitoring unit monitors the operating status in real time to ensure the safety and stability of the system. Through the coordinated work of the remote unit, serial port unit, server unit, upper monitoring unit and frequency conversion unit, the system can realize real-time signal collection, intelligent analysis, precise control and monitoring, ensuring the efficiency and stability of the remote and intelligent system.

[0061] In some embodiments of the present application, when a signal is preprocessed to obtain a target signal and the target signal is sent to a serial port unit, and a first network protocol is used for communication between the remote unit and the serial port unit, the signal is preprocessed, and the preprocessing includes signal filtering, signal cleaning and standardization, and the first network protocol selects MODBUS RTU communication protocol.

[0062] It is understandable that the acquisition of signals from thermal measuring points will be affected by noise factors, resulting in inaccurate data or large fluctuations. By filtering the signal, useless noise and interference can be effectively removed to ensure that the system obtains stable and reliable target signals. Signal cleaning aims to remove irrelevant signal data, correct errors and fill missing values ​​to ensure the quality of the target signal. Standardization processing converts the signal into a unified target signal format for subsequent processing and analysis. The selection of MODBUS RTU communication protocol as the first network protocol can effectively support the acquisition and control of remote signal data. MODBUS RTU protocol is a communication protocol used in industrial automation. The baud rate adopts 9600bps. 9600bps can have good stability and anti-interference ability in environments with more interference or unstable communication. Through the MODBUS RTU protocol, the system can stably and reliably transmit the target signal, reduce the risk of communication delay and loss, and improve the stability of the remote system.

[0063] In some embodiments of the present application, the serial port unit is configured to convert a first network protocol into a second network protocol, including: the second network protocol selects the MODBUS TCP / IP communication protocol, the serial port unit receives a target signal, and encapsulates the target signal according to the MODBUS RTU communication protocol format, and sends the encapsulated package to the server unit according to the MODBUS TCP / IP communication protocol.

[0064] It is understandable that by adopting the MODBUS TCP / IP communication protocol, the system can achieve fast and stable signal data transmission in the Ethernet environment, ensuring seamless information exchange between various control units. The serial port unit receives the target signal and encapsulates it in the MODBUS RTU format, which enhances the compatibility of the system and further improves the efficiency and real-time performance of the target signal transmission.

[0065] In some embodiments of the present application, the server unit is configured to adopt a second network protocol, and establish a network address and a corresponding port number with the serial port unit. When the control logic configuration is used to read the target signal and send it to the upper-level monitoring unit, it includes: the server unit starts a TCP server program, listens to the TCP / IP address and port number of the serial port unit, and waits for a connection request from the serial port unit. When the connection request from the serial port unit is received, the server unit establishes a communication connection with the serial port unit through the TCP server program, and transmits the encapsulated packet from the serial port unit to the control logic configuration. The control logic configuration parses the encapsulated packet and sends it to the upper-level monitoring unit.

[0066] It is understandable that the second network protocol uses the MODBUS TCP / IP communication protocol. The serial port unit initiates a connection request, and the server unit establishes a stable communication connection with the serial port unit through the TCP server program to ensure the reliability of the transmission. After the communication connection is established, the serial port unit will send an encapsulation package to the server unit through the TCP connection. When the server unit receives the encapsulation package, it transmits it to the control logic configuration for processing. The control logic configuration is responsible for parsing the header information and data field of the encapsulation package and outputting it to the upper monitoring unit. The received encapsulation package is processed through the control logic configuration, which lays a data foundation for the subsequent judgment and analysis of the upper monitoring unit, and improves the flexibility and adaptability of the system.

[0067] In some embodiments of the present application, when comparing the air-cooling back pressure value with the historical air-cooling back pressure value, and judging whether to correct the air-cooling back pressure value according to the comparison result, it includes: when the air-cooling back pressure value is less than the minimum value of the historical air-cooling back pressure value, judging to correct the air-cooling back pressure value; when the air-cooling back pressure value is greater than or equal to the minimum value of the air-cooling back pressure value, judging not to correct the air-cooling back pressure value, and determining the air-cooling back pressure value as the target back pressure value.

[0068] It is understandable that comparing the air-cooling back pressure value with the historical air-cooling back pressure value can ensure the rationality of the air-cooling back pressure value. The air-cooling back pressure value of the air-cooling fan will fluctuate within a certain range. When the air-cooling back pressure value is lower than the minimum value of the historical air-cooling back pressure value, it deviates from the reasonable range of the air-cooling back pressure value and needs to be corrected to meet the actual situation. It effectively reduces the impact of abnormal values ​​caused by measurement factors, improves the accuracy of the target back pressure value, and enhances the objectivity and scientificity of the subsequent intelligent analysis of the target back pressure value.

[0069] In some embodiments of the present application, when the air-cooling back pressure value is compared with the historical air-cooling back pressure value for similarity, the back pressure compensation factor is determined according to the back pressure similarity, and the target back pressure value is determined based on the back pressure compensation factor, it includes: determining the ratio of the air-cooling back pressure value and the minimum value of the historical air-cooling back pressure value as the back pressure similarity, the back pressure similarity is recorded as T, pre-setting a first preset back pressure compensation factor, a second preset back pressure compensation factor and a third preset back pressure compensation factor, when T≤0.3, the first preset back pressure compensation factor is used as the back pressure compensation factor of the air-cooling back pressure value, when 0.3<T≤0.7, the second preset back pressure compensation factor is used as the back pressure compensation factor of the air-cooling back pressure value, when 0.7<T, the third preset back pressure compensation factor is used as the back pressure compensation factor of the air-cooling back pressure value, and the product value of the back pressure compensation factor and the air-cooling back pressure value is determined as the target back pressure value.

[0070] It can be understood that the first preset backpressure compensation factor is preferably 2, the second preset backpressure compensation factor is preferably 1.5, and the third preset backpressure compensation factor is preferably 1.2. The dynamic adjustment mechanism ensures that the air cooling backpressure value can be adaptively corrected under different backpressure similarities, avoiding excessive or insufficient correction, improving the flexibility and real-time adaptability of the correction process, and ensuring the accuracy of the target backpressure value.

[0071] In some embodiments of the present application, the upper-level monitoring unit compares the target back pressure value with the back pressure alarm value, and sends a corresponding control signal to the frequency conversion unit based on the comparison result, including: when the target back pressure value is less than the back pressure alarm value, the upper-level monitoring unit sends a first control signal; when the target back pressure value is greater than the back pressure alarm value, the upper-level monitoring unit sends a second control signal, and the second control signal includes a deceleration signal and a stop signal.

[0072] Specifically, the target back pressure value is the actual back pressure value of the current air-cooling fan, and the back pressure alarm value is a reasonable back pressure value of the air-cooling fan. When the target back pressure value is lower than the back pressure alarm value, the upper monitoring unit sends a first control signal. The first control signal indicates that the current back pressure of the air-cooling fan is within a safe range. The first control signal includes an acceleration signal and a maintenance signal. When the target back pressure value is less than or equal to 0.5 times the back pressure alarm value, the first control signal is an acceleration signal. When the target back pressure value is greater than 0.5 times the back pressure alarm value and less than 1 times the back pressure alarm value, the first control signal is a maintenance signal. The purpose of the first control signal is to allow the motor to continue to operate normally or to accelerate appropriately within a reasonable back pressure alarm value to meet the needs of air cooling. When the target back pressure value is greater than the back pressure alarm value, the upper monitoring unit will send out a second control signal, and appropriate measures need to be taken to adjust the current state of the air-cooling fan motor. When the target back pressure value is greater than or equal to 1 times the back pressure alarm value and less than 1.5 times the back pressure alarm value, the second control signal is a deceleration signal. When the target back pressure value is greater than or equal to 1.5 times the back pressure alarm value, the second control signal is a stop signal. The deceleration signal of the second control signal is to gradually decelerate the motor until the target back pressure value returns to the normal range, avoiding damage to the air-cooling fan caused by long-term high-speed operation. The stop signal of the second control signal is the last protection for the air-cooling fan to avoid serious faults caused by the air-cooling fan directly.

[0073] It is understandable that the upper monitoring unit dynamically sends out corresponding control signals according to the comparison results, and the system can flexibly adjust the motor operating state of the air-cooling fan, thereby maintaining the stability and safety of the motor under different back pressure conditions. When the target back pressure value is lower than the back pressure alarm value, the motor can be kept in operation or accelerated appropriately, avoiding excessive acceleration of the motor and saving energy consumption. When the target back pressure value exceeds the back pressure alarm value, the deceleration signal and the stop signal effectively prevent the occurrence of overpressure, ensuring that the air-cooling fan will not be damaged due to excessive back pressure. The dynamic issuance of corresponding signals improves the flexibility and reliability of the system.

[0074] In some embodiments of the present application, the frequency conversion unit is configured to obtain a control signal and determine a frequency conversion mode, including: when the frequency conversion unit obtains a first control signal, the frequency conversion mode is adjusted to a maintenance mode; when the frequency conversion unit obtains a second control signal, the frequency conversion mode is adjusted to a deceleration or stop mode.

[0075] Specifically, when the frequency conversion unit obtains the first control signal or the second control signal, the mode will be adaptively adjusted for different signals. When the acceleration signal of the first control signal is received, the frequency conversion unit adjusts the frequency conversion mode to the acceleration mode. The acceleration mode increases the motor speed by increasing the power supply frequency of the motor, improves the power output to achieve appropriate working efficiency, and thus increases the cooling capacity of the air-cooling fan. When the frequency conversion unit obtains the maintenance signal of the first control signal, the frequency conversion mode is adjusted to the maintenance mode. In the maintenance mode, the current motor runs at a constant speed to maintain the existing working state. The maintenance mode ensures that the motor can drive the air-cooling fan to provide a stable cooling effect and avoid unnecessary energy waste. When the deceleration signal of the second control signal is received, the frequency conversion mode is adjusted to the deceleration mode. The deceleration mode reduces the workload of the air-cooling fan by reducing the speed of the motor, thereby gradually reducing the temperature of the motor and reducing the back pressure of the air-cooling fan. The deceleration mode reduces the motor speed by reducing the power supply frequency of the motor, helping the air-cooling fan to return to a normal back pressure range. When the stop signal of the second control signal is received, it means that the deceleration mode cannot effectively control the target back pressure value within the safe range, and the frequency conversion mode is adjusted to the stop mode. The stop mode will stop the operation of the motor to prevent the air cooler from being damaged or causing a safety accident.

[0076] It is understandable that when the second control signal is obtained, the frequency conversion unit will select the deceleration or stop mode according to the different signal forms. When the target back pressure value is too high, the frequency conversion unit will first enter the deceleration mode, and gradually restore the back pressure of the air-cooling fan by reducing the motor speed. When the target back pressure value increases further and the deceleration mode is invalid, the frequency conversion unit will switch to the stop mode to maximize the protection of the air-cooling fan, thereby extending the service life of the air-cooling fan and reducing maintenance costs. Through the reasonable use of the acceleration mode, maintenance mode, deceleration mode and stop mode, the frequency conversion unit can automatically adjust the motor speed according to the target back pressure value, avoid excessive operation of the air-cooling fan, dynamically adjust the frequency conversion mode, and the system can achieve precise control of the motor state, thereby ensuring the safety and reliability of the air-cooling fan and improving the intelligence level of the system.

[0077] In some embodiments of the present application, the communication protocol between the server unit and the frequency conversion unit is Profi net, the server unit obtains all function codes of the frequency conversion unit in real time, the frequency conversion unit establishes a network communication GSD file and places it into the server unit, and the frequency conversion unit is set to manual control and automatic control.

[0078] Specifically, the Profinet protocol is based on Ethernet technology and supports high-speed data transmission. The Profinet protocol has good scalability and compatibility, enabling the frequency conversion unit to be connected to the server unit, and the GSD file includes all the function code data of the frequency conversion unit. By transferring the GSD file of the frequency conversion unit to the server unit, the server unit can obtain all the function codes of the frequency conversion unit in real time, avoiding human configuration errors, enhancing the accuracy of system configuration, and improving the efficiency and intelligence level of the system. Manual control and automatic control are set between the frequency conversion unit and the server unit, so that the system allows users to flexibly control in different operating states and make timely adjustments according to actual conditions.

[0079] It is understandable that in the automatic control mode, the system will automatically adjust the frequency conversion mode of the frequency conversion unit according to the target temperature obtained by the upper monitoring unit. The automatic control mode can give full play to the intelligent performance of the system, reduce human intervention during operation, achieve accurate load matching, and optimize energy consumption. The manual control mode allows the user to directly control the frequency conversion mode of the frequency conversion unit to help troubleshoot possible faults or handle special situations.

[0080] In summary, the beneficial effects of the present invention are: through the remote unit, serial port unit, and server unit, the remote collection, transmission, and analysis of the signals of the thermal measuring points are realized, and there is no need to connect multiple control wiring cabinets to process the signals of the thermal measuring points, which saves the cables connected between them. The failure rate of the air-cooling equipment is reduced, the serial port unit realizes the conversion of different Ethernet communication protocols, and enhances the network adaptability of the system. The server unit accurately reads the target signal based on the control logic configuration, and provides reliable data support for the pressure analysis and decision-making of the subsequent upper monitoring unit, which improves the remote level of the system. The upper monitoring unit ensures the dynamic correction and real-time optimization of the air-cooling back pressure value, and provides comprehensive operation data by real-time monitoring of the operating status of the entire system, which is convenient for fault diagnosis and remote management, so that the system has efficient data processing capabilities, intelligent control strategies, and stable operating performance, which helps to improve the motor operating efficiency of the air-cooling fan. The frequency conversion unit flexibly adjusts the motor operating status of the air-cooling fan according to the control signal sent by the upper monitoring unit, ensuring the stability of the motor operation and energy-saving effect.

[0081] In another preferred embodiment based on the above embodiment, refer to Figure 2 As shown, this embodiment provides a remote intelligent air cooling control method, which is used to apply the above remote intelligent air cooling control system, including:

[0082] S100: Acquire the signal of the thermal power measurement point, and pre-process the signal to obtain the target signal;

[0083] S200: converting the first network protocol into a second network protocol;

[0084] S300: using the second network protocol, establishing a network address and a corresponding port number, and using the control logic configuration to read the target signal;

[0085] S400: monitoring the pressure signal of the thermal power measuring point and converting it into an air cooling back pressure value, comparing the air cooling back pressure value with a historical air cooling back pressure value, and determining whether to correct the air cooling back pressure value according to the comparison result;

[0086] When it is determined that the air cooling back pressure value is to be corrected, the air cooling back pressure value is compared with the historical air cooling back pressure value for similarity, a back pressure compensation factor is determined according to the back pressure similarity, and a target back pressure value is determined based on the back pressure compensation factor;

[0087] S500: Compare the target back pressure value with the back pressure alarm value, and issue a corresponding control signal according to the comparison result;

[0088] S600: Acquire a control signal and determine a frequency conversion mode, and drive a motor of the air cooling fan to operate based on the frequency conversion mode.

[0089] It can be understood that by acquiring the signal of the thermal power measurement point and preprocessing it, the target signal is obtained, which ensures the accuracy and stability of the target signal and provides reliable support for the subsequent transmission of the target signal. The first network protocol is converted into the second network protocol to enhance the adaptability and flexibility of network communication. The network address and port number are established through the second network protocol, and the target signal is read using the control logic configuration, which lays a data support for the subsequent acquisition of the target back pressure value. The pressure signal of the thermal power measurement point is monitored and converted into an air-cooled back pressure value, and the air-cooled back pressure value is compared with the historical air-cooled back pressure value. According to the back pressure trend, it is determined whether to correct the air-cooled back pressure value to ensure the accuracy of the target back pressure value. The target back pressure value is compared with the back pressure alarm value, and a control signal is issued according to the result. The frequency conversion mode is determined based on the control signal, which can dynamically adjust the operating state of the motor and ensure the stability and efficiency of the motor.

[0090] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0091] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0092] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A remote intelligent air cooling control system, characterized in that: include: Remote unit, serial port unit, server unit, upper monitoring unit and frequency conversion unit; The remote unit is configured to obtain a signal from a thermal power measurement point, pre-process the signal to obtain a target signal, and send the target signal to the serial port unit. The remote unit and the serial port unit communicate with each other using a first network protocol. The serial port unit is configured to convert the first network protocol into a second network protocol and send the target signal to the server unit; The server unit is configured to adopt the second network protocol, establish a network address and a corresponding port number with the serial port unit, and adopt a control logic configuration to read the target signal and send it to the upper monitoring unit; The upper monitoring unit is configured to monitor the pressure signal of the thermal power measuring point and convert it into an air cooling back pressure value, compare the air cooling back pressure value with a historical air cooling back pressure value, and determine whether to correct the air cooling back pressure value according to the comparison result; When it is determined that the air-cooling back pressure value is to be corrected, the air-cooling back pressure value is similarly compared with the historical air-cooling back pressure value, a back pressure compensation factor is determined according to the back pressure similarity, and a target back pressure value is determined based on the back pressure compensation factor; The upper monitoring unit compares the target back pressure value with the back pressure alarm value, and sends a corresponding control signal to the frequency conversion unit according to the comparison result; The frequency conversion unit is configured to obtain the control signal and determine a frequency conversion mode, and drive the motor of the air-cooling fan to operate based on the frequency conversion mode.

2. The remote intelligent air cooling control system according to claim 1 is characterized in that: When the signal is preprocessed to obtain a target signal, the target signal is sent to the serial port unit, and the remote unit and the serial port unit communicate using a first network protocol, the method includes: Preprocessing the signal, wherein the preprocessing includes signal filtering, signal cleaning and standardization; The first network protocol uses the MODBUS RTU communication protocol.

3. The remote intelligent air cooling control system according to claim 2 is characterized in that: The serial port unit is configured to convert the first network protocol into a second network protocol, including: The second network protocol uses MODBUS TCP / IP communication protocol; The serial port unit receives the target signal, encapsulates the target signal according to the MODBUS RTU communication protocol format, and sends the encapsulated packet to the server unit according to the MODBUS TCP / IP communication protocol.

4. The remote intelligent air cooling control system according to claim 3 is characterized in that: The server unit is configured to adopt the second network protocol, establish a network address and a corresponding port number with the serial port unit, and adopt a control logic configuration to read the target signal and send it to the upper monitoring unit, including: The server unit starts a TCP server program, monitors the TCP / IP address and port number of the serial port unit, and waits for a connection request from the serial port unit; When receiving the connection request from the serial port unit, the server unit establishes a communication connection with the serial port unit through the TCP server program, transmits the encapsulation packet from the serial port unit to the control logic configuration, and the control logic configuration parses the encapsulation packet and sends it to the upper monitoring unit.

5. The remote intelligent air cooling control system according to claim 4 is characterized in that: When comparing the air cooling back pressure value with the historical air cooling back pressure value and determining whether to correct the air cooling back pressure value according to the comparison result, the method includes: When the air-cooling back pressure value is less than the minimum value of the historical air-cooling back pressure values, it is determined to correct the air-cooling back pressure value; When the air-cooling back pressure value is greater than or equal to the minimum value of the air-cooling back pressure value, it is determined that the air-cooling back pressure value is not to be corrected, and the air-cooling back pressure value is determined as the target back pressure value.

6. The remote intelligent air cooling control system according to claim 5 is characterized in that: When the air-cooling back pressure value is similarly compared with the historical air-cooling back pressure value, a back pressure compensation factor is determined according to the back pressure similarity, and a target back pressure value is determined based on the back pressure compensation factor, the method includes: The ratio of the air-cooling back pressure value to the minimum value of the historical air-cooling back pressure values ​​is determined as the back pressure similarity, and the back pressure similarity is recorded as T; presetting a first preset backpressure compensation factor, a second preset backpressure compensation factor, and a third preset backpressure compensation factor; When T≤0.3, the first preset back pressure compensation factor is used as the back pressure compensation factor of the air cooling back pressure value; When 0.3<T≤0.7, the second preset back pressure compensation factor is used as the back pressure compensation factor of the air cooling back pressure value; When 0.7<T, the third preset back pressure compensation factor is used as the back pressure compensation factor of the air cooling back pressure value; The product value of the back pressure compensation factor and the air cooling back pressure value is determined as the target back pressure value.

7. The remote intelligent air cooling control system according to claim 6 is characterized in that: When the upper monitoring unit compares the target back pressure value with the back pressure alarm value and sends a corresponding control signal to the frequency conversion unit according to the comparison result, it includes: When the target back pressure value is less than the back pressure alarm value, the upper monitoring unit sends a first control signal; When the target back pressure value is greater than the back pressure alarm value, the upper monitoring unit sends a second control signal; The second control signal includes a deceleration signal and a stop signal.

8. The remote intelligent air cooling control system according to claim 7 is characterized in that: The frequency conversion unit is configured to obtain the control signal and determine the frequency conversion mode, including: When the frequency conversion unit obtains the first control signal, the frequency conversion mode is adjusted to the maintenance mode; When the frequency conversion unit obtains the second control signal, the frequency conversion mode is adjusted to a deceleration or stop mode.

9. The remote intelligent air cooling control system according to claim 8, characterized in that: include: The communication protocol between the server unit and the frequency conversion unit is Profinet, and the server unit obtains all function codes of the frequency conversion unit in real time; The frequency conversion unit establishes a network communication GSD file and places it into the server unit; The frequency conversion unit is set to manual control and automatic control.

10. A remote intelligent air cooling control method, used for applying the remote intelligent air cooling control system according to any one of claims 1 to 9, characterized in that: include: Acquiring a signal from a thermal power measurement point, and preprocessing the signal to obtain a target signal; Converting a first network protocol to a second network protocol; Using the second network protocol, establishing a network address and a corresponding port number, and using control logic configuration to read the target signal; Monitor the pressure signal of the thermal power measuring point and convert it into an air cooling back pressure value, compare the air cooling back pressure value with a historical air cooling back pressure value, and determine whether to correct the air cooling back pressure value according to the comparison result; When it is determined that the air-cooling back pressure value is to be corrected, the air-cooling back pressure value is similarly compared with the historical air-cooling back pressure value, a back pressure compensation factor is determined according to the back pressure similarity, and a target back pressure value is determined based on the back pressure compensation factor; Comparing the target back pressure value with the back pressure alarm value, and issuing a corresponding control signal according to the comparison result; The control signal is acquired and a frequency conversion mode is determined, and a motor of the air cooling fan is driven to operate based on the frequency conversion mode.

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