Redundancy switching device and method for heat exchange station controller

Abstract

The invention discloses a heat exchange station controller redundancy switching device and method, and relates to the technical field of heat exchange station controllers and a redundancy switching system.The redundancy switching system comprises a main controller arranged on a main board, the main controller is in electrical input connection with a power supply unit and electrically outputs a data exchange unit, and the power supply unit is connected with the data exchange unit. The redundancy switching device comprises a main controller, the main controller electrically inputs and outputs a signal input and output unit, the main controller electrically inputs a signal output unit, the signal output unit is in electrical input connection with a redundancy switching system, and the redundancy switching system is in electrical input connection with a system monitoring unit. Compared with the prior art, the system has the advantages that the requirement for extra physical space is reduced, the design and installation process of the system is simplified, specifically, CPU redundancy is achieved in a physical individual, extra physical controller units and redundant optical fibers are not needed, and the overall construction cost of the system is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange station controllers, and particularly to a redundant switching device and method for a heat exchange station controller. Background Art

[0002] In modern heating systems, as a key node in urban central heating, the stable operation of a heat exchange station is crucial for ensuring the continuity and efficiency of heating services. Traditionally, most heat exchange station controllers use a single CPU architecture for data processing and control decisions. Although this design is simple and low-cost, it has significant risks: once the CPU fails, the entire heat exchange station system will face the risk of shutdown, seriously affecting the quality of heating services.

[0003] To improve the reliability and stability of the system, a common redundancy solution has been developed in the industry - to achieve CPU redundancy through two completely independent physical controller units. These two controller units are usually connected by an optical fiber link to ensure that when one CPU fails, the other CPU can quickly take over control. Although this dual physical unit redundancy design significantly improves the reliability of the system, it also brings the following problems:

[0004] 1. High construction cost: Since it is necessary to deploy two sets of independent physical controller units and redundant optical fibers, this significantly increases the initial construction cost of the system.

[0005] 2. Complex design and installation: The design of dual physical units not only increases the hardware complexity but also requires precise installation and configuration, increasing the implementation difficulty.

[0006] 3. High maintenance cost: Maintaining two independent physical units requires more resources and time, increasing the long-term operation cost.

[0007] 4. Large space occupation: Additional space is required to accommodate the second controller unit, which is a challenge for some heat exchange stations with limited space. Therefore, based on the actual usage situation, the above-mentioned existing technology is improved. Summary of the Invention

[0008] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions cannot be used to limit the scope of the present invention.

[0009] In view of the above and / or problems existing in the prior art, the present invention is proposed.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A redundant switching device for a heat exchange station controller, comprising:

[0012] A heat exchange station controller, the heat exchange station controller includes a main board, the main board is a circuit board, and electrical components required for the controller are provided on the circuit board, including a main CPU and a standby CPU, and also includes a system monitoring chip;

[0013] A redundant switching system, the redundant switching system includes a main controller arranged on the main board, the main controller is electrically connected to a power supply unit at the input, and the main controller is electrically connected to a data exchange unit at the output, and the main controller is electrically connected to a signal input / output unit at the input and output, the main controller is electrically connected to a signal output unit at the input, the signal output unit is electrically connected to the redundant switching system at the input, and the redundant switching system is electrically connected to a system monitoring unit at the input.

[0014] Further: The main CPU and standby CPU are installed on the top of the main board, the bottom and top of the main board are respectively connected with a lower guard plate and an upper guard plate, and the left and right sides of the main board are respectively connected with a left guard plate and a right guard plate, and a cooling fan is installed on the inner wall of the left guard plate, and the air outlet of the cooling fan corresponds to the main CPU and standby CPU, the main board is installed on a bottom plate, the end faces of the lower guard plate, upper guard plate, left guard plate and right guard plate are connected with a front guard plate, and a circuit board and a touch control screen are connected to the front guard plate.

[0015] Further: The data exchange unit is electrically connected to the touch control screen at the input, the data exchange unit is electrically connected to a communication unit at the output, and the communication unit is electrically connected to a data center at the output, and the data exchange unit is electrically connected to an alarm unit at the output.

[0016] Further: The signal input / output unit is bidirectionally electrically connected to an electronic valve, a water pump frequency converter and a sensor unit.

[0017] Further: The signal output unit includes a digital quantity output unit and an analog output unit, and the digital quantity output unit and the analog output unit are respectively electrically connected to the main controller at the output.

[0018] Further: The redundant switching system includes a system status identification unit and a system switching control unit, and the system status identification unit and the system switching control unit are respectively electrically connected to the signal output unit at the output.

[0019] Further: The system monitoring unit includes a system monitoring chip. The system monitoring chip is electrically connected to the timing unit in an input manner, electrically connected to the data storage unit in an output manner, and bidirectionally electrically connected to the data volumes of the main CPU and the standby CPU. The data volumes are the digital quantity input unit and the analog quantity input unit. The main CPU and the standby CPU are respectively electrically connected to the digital quantity input unit and the analog quantity input unit in an output manner. The system monitoring chip continuously monitors the working state of the main CPU at regular intervals by using the heartbeat signal detection method.

[0020] Further: Both the main CPU and the standby CPU adopt high-performance 32-bit ARM processors, and under normal circumstances, the standby CPU is in a standby state.

[0021] Further: A switching method for a heat exchange station controller redundancy switching device includes the following steps:

[0022] S1: The system monitoring chip periodically sends a heartbeat signal to the main CPU and waits for a response;

[0023] S2: If a response and reply are received in a timely manner, it is determined that the main CPU has no fault; if no response or an abnormal response is received, it is determined that the main CPU has a fault;

[0024] S3: When it is determined that the main CPU has a fault, a switching mechanism is triggered to transfer the control right to the standby CPU;

[0025] S4: After receiving the switching instruction, the standby CPU immediately enters the working state;

[0026] S5: Load the latest system status data to ensure seamless takeover of the control task.

[0027] Further: The method further includes: The CPU transmits a signal to the main controller, and the main controller controls the electronic valve, the water pump frequency converter, and the sensor unit through the signal input and output unit, thereby realizing the control of the opening and closing of the electronic valve and the water pump. And the sensor unit transmits the received pressure, temperature, and flow signals back to the main controller, and the main controller transmits the data to the data exchange unit. The data exchange unit displays the data on the touch control screen and simultaneously transmits it to the data center through the communication unit.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] The redundant switching device and method for the heat exchange station controller provided by the present invention not only reduce the demand for additional physical space, but also simplify the system design and installation process. Specifically, by implementing CPU redundancy within a single physical entity, without the need for additional physical controller units and redundant optical fibers, the overall construction cost of the system is reduced. The integrated design makes the system more compact, reducing hardware complexity and installation difficulty. The maintenance of a single physical controller is more convenient, reducing long-term operation costs. In the normal working state, the standby CPU can undertake part of the computing tasks, improving resource utilization rate.

[0030] Other features and advantages of the present application will be described in the following specification, and in part, will be obvious from the specification, or will be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained by the structures specifically pointed out in the written specification and the drawings.

[0031] The technical solutions of the present application will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 It is a flowchart of the method of the present invention;

[0034] Figure 2 It is a schematic structural diagram of the redundant switching system of the present invention;

[0035] Figure 3 It is an exploded view of the main body structure of the heat exchange controller of the present invention.

[0036] In the figure: 1, main board; 2, lower guard plate; 3, main CPU; 4, standby CPU; 5, left guard plate; 6, cooling fan; 7, front guard plate; 8, circuit board; 9, touch control screen; 10, upper guard plate; 11, right guard plate; 12, bottom plate. Detailed Embodiments

[0037] In order to make the above objectives, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings of the specification.

[0038] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0039] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general scale. Moreover, the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0040] Furthermore, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures, or characteristics that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0041] Please refer to Figures 1-3 , the present invention provides a technical solution: a redundant switching device for a heat exchange station controller, including a heat exchange station controller for controlling and monitoring the operation of the heat exchange station. By collecting various data and adjusting the equipment of the heat exchange station according to a preset program or manual instructions, safe, efficient, and energy-saving operation is achieved. The heat exchange station controller includes a main board 1, the main board 1 is a circuit board, and electrical components required for the controller are provided on the circuit board, including a main CPU 3 and a standby CPU 4. It also includes a system monitoring chip. It should be noted that the main CPU, standby CPU, and system monitoring chip are the main components of the main controller. The system monitoring chip is mainly a status monitoring chip, which helps to ensure the efficient operation and reliability of the system. Both the main CPU and the standby CPU use high-performance 32-bit ARM processors, and normally the standby CPU is in a standby state. Once an abnormality is detected, the switching procedure is immediately triggered to prompt the standby CPU to take over the data processing work;

[0042] The main board 1 is mounted with a main CPU 3 and a standby CPU 4 at the top. The bottom and top of the main board 1 are respectively connected with a lower guard plate 2 and an upper guard plate 10. The left and right sides of the main board 1 are respectively connected with a left guard plate 5 and a right guard plate 11. A cooling fan 6 is installed on the inner wall of the left guard plate 5, and the air outlet of the cooling fan 6 corresponds to the main CPU 3 and the standby CPU 4. The main board 1 is installed on a bottom plate 12. The front guard plate 7 is connected to the end faces of the lower guard plate 2, the upper guard plate 10, the left guard plate 5 and the right guard plate 11. A circuit board 8 and a touch control screen 9 are connected to the front guard plate 7. It should be noted that the above are the mechanical components of the heat exchange station controller. The main functions of the heat exchange controller include collecting various parameters in the heat exchange station, automatically adjusting the start and stop of equipment such as pump valves according to the collected data and preset control logic, and having the functions of data recording and storage, remote monitoring and alarm;

[0043] A redundancy switching system. The redundancy switching system includes a main controller arranged on the main board 1. The main controller is electrically connected to a power supply unit in an input manner, and the main controller is electrically connected to a data exchange unit in an output manner. The main controller is electrically connected to a signal input / output unit in an input / output manner. The main controller is electrically connected to a signal output unit. The signal output unit is electrically connected to the redundancy switching system in an input manner, and the redundancy switching system is electrically connected to a system monitoring unit in an input manner. It should be noted that the signal output unit includes a digital quantity output unit and an analog quantity output unit. The signal output by the digital quantity is a discrete and binary signal, and the signal output by the analog quantity is a continuously changing signal, and its magnitude and change trend are in a proportional relationship with the control quantity.

[0044] Among them, preferably, the data exchange unit is electrically connected to the touch control screen 9 in an input manner, the data exchange unit is electrically connected to a communication unit in an output manner, the communication unit is electrically connected to a data center in an output manner, and the data exchange unit is electrically connected to an alarm unit in an output manner. It should be noted that the data exchange unit displays the data received in the main controller on the touch control screen 9, and at the same time transmits the data to the data center by means of the communication unit. At the same time, when the data is abnormal, the alarm unit issues an alarm warning to facilitate the staff to adjust and repair in time.

[0045] Preferably, the signal input / output unit is bidirectionally electrically connected to an electronic valve, a water pump frequency converter and a sensor unit. It should be noted that the electronic valve is installed on the heating pipeline and is feedback-signaled by the main controller through the signal input / output unit to realize opening during work, shutting down or closing during failure. The water pump frequency converter is used to control the circulating water pump. Under the program algorithm of the main controller, the signal is transmitted to the water pump frequency converter through the input / output unit to adjust the workload of the water pump. In addition, the sensor unit includes pressure, temperature and flow sensors, and the sensor unit transmits the detected real-time data to the main controller.

[0046] Preferably, the signal output unit includes a digital quantity output unit and an analog quantity output unit, and the digital quantity output unit and the analog quantity output unit are respectively electrically connected to the main controller for output.

[0047] Preferably, the redundancy switching system includes a system status identification unit and a system switching control unit, and the system status identification unit and the system switching control unit are respectively electrically connected to the signal output unit for output.

[0048] Preferably, the system monitoring unit includes a system monitoring chip. The system monitoring chip is electrically connected to the timing unit for input, and the system monitoring chip is electrically connected to the data storage unit for output. The system monitoring chip is bidirectionally electrically connected to the data quantities of the main CPU 3 and the standby CPU 4, and the data quantities are the digital quantity input unit and the analog quantity input unit. The main CPU 3 and the standby CPU 4 are respectively electrically connected to the digital quantity input unit and the analog quantity input unit. The system monitoring chip continuously monitors the working status of the main CPU 3 by using the heartbeat signal detection method. It should be noted that under the control of the timing unit, the system monitoring chip will periodically send heartbeat signals to the main CPU 3. At the same time, the main CPU 3 and the standby CPU 4 transmit data to the system monitoring chip through the digital quantity input unit and the analog quantity input unit. The system monitoring chip stores the data in the data storage unit, and the heartbeat signal transmitted to the main CPU 3 will also be timely fed back to the system monitoring chip. The redundancy switching system identifies the system monitoring chip through the system status identification unit, and the system switching control unit cooperates with the system monitoring chip to be able to realize the timely switching work between the main CPU 3 and the standby CPU 4.

[0049] Embodiment: A switching method for a redundancy switching device of a heat exchange station controller includes the following steps:

[0050] S1: The system monitoring chip periodically sends heartbeat signals to the main CPU 3 and waits for a response;

[0051] S2: If a response and reply are received in time, it is determined that the main CPU 3 is fault-free; if no response is received or the response is abnormal, it is determined that the main CPU 3 is faulty;

[0052] S3: When it is determined that the main CPU 3 is faulty, trigger the switching mechanism and transfer the control right to the standby CPU 4;

[0053] S4: After receiving the switching instruction, the standby CPU 4 immediately enters the working state;

[0054] S5: Load the latest system status data to ensure seamless takeover of the control task.

[0055] Preferably, the CPU transmits signals to the main controller, and the main controller controls the electronic valve, the water pump frequency converter, and the sensor unit through the signal input / output unit, so as to control the opening and closing of the electronic valve and the water pump. Moreover, the sensor unit transmits the received pressure, temperature, and flow signals back to the main controller, and the main controller transmits the data to the data exchange unit. The data exchange unit displays the data on the touch control screen 107 and simultaneously transmits it to the data center through the communication unit.

[0056] It should be understood that in the development process of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions can be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without excessive experimentation, such development efforts will be a routine task of design, manufacturing, and production.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A redundant switching device for a heat exchange station controller, characterized in that, including, a heat exchange station controller, the heat exchange station controller includes a main board (1), the main board (1) is a circuit board, and electrical components required for the controller are provided on the circuit board, including a main CPU (3) and a standby CPU (4), and also includes a system monitoring chip; a redundancy switching system, the redundancy switching system includes a main controller provided on the main board (1), the main controller is electrically connected to a power supply unit at the input, and the main controller is electrically connected to a data exchange unit at the output, and the main controller is electrically connected to a signal input / output unit at the input and output, the main controller is electrically connected to a signal output unit at the input, the signal output unit is electrically connected to the redundancy switching system at the input, and the redundancy switching system is electrically connected to a system monitoring unit at the input.

2. The redundant switching device of a heat exchange station controller according to claim 1, characterized in that: The main CPU (3) and the standby CPU (4) are installed on the top of the main board (1), the bottom and the top of the main board (1) are respectively connected to a lower guard plate (2) and an upper guard plate (10), and the left and right sides of the main board (1) are respectively connected to a left guard plate (5) and a right guard plate (11), and a cooling fan (6) is installed on the inner wall of the left guard plate (5), and the air outlet of the cooling fan (6) corresponds to the main CPU (3) and the standby CPU (4), the main board (1) is installed on a bottom plate (12), the front ends of the lower guard plate (2), the upper guard plate (10), the left guard plate (5) and the right guard plate (11) are connected to a front guard plate (7), and a circuit board (8) and a touch control screen (9) are connected to the front guard plate (7).

3. The redundant switching device for a heat exchange station controller according to claim 1, wherein: The data exchange unit is electrically connected to the touch control screen (9) at the input, the data exchange unit is electrically connected to a communication unit at the output, the communication unit is electrically connected to a data center at the output, and the data exchange unit is electrically connected to an alarm unit at the output.

4. A redundant switching device for a heat exchange station controller according to claim 1, characterized in that: The signal input / output unit is bidirectionally electrically connected to an electronic valve, a water pump frequency converter and a sensor unit.

5. A redundant switching device for a heat exchange station controller according to claim 1, characterized in that: The signal output unit includes a digital quantity output unit and an analog quantity output unit, and the digital quantity output unit and the analog quantity output unit are respectively electrically connected to a main controller at the output.

6. The redundant switching device of a heat exchange station controller according to claim 1, characterized in that: The redundancy switching system includes a system state identification unit and a system switching control unit, and the system state identification unit and the system switching control unit are respectively electrically connected to the signal output unit at the output.

7. A redundant switching device for a heat exchange station controller according to claim 1, characterized in that: The system monitoring unit includes a system monitoring chip, the system monitoring chip is electrically connected to a timing unit at the input, the system monitoring chip is electrically connected to a data storage unit at the output, the system monitoring chip is bidirectionally electrically connected to the data quantities of the main CPU (3) and the standby CPU (4), and the data quantities are a digital quantity input unit and an analog quantity input unit, the main CPU (3) and the standby CPU (4) are respectively electrically connected to the digital quantity input unit and the analog quantity input unit at the output, and the system monitoring chip continuously monitors the working state of the main CPU (3) by using a heartbeat signal detection method at regular intervals.

8. The redundant switching device for a heat exchange station controller according to claim 1, wherein: Both the main CPU (3) and the standby CPU adopt high-performance 32-bit ARM processors, and normally the standby CPU is in a standby state.

9. The switching method of a switching device for a heat exchange station controller redundancy according to claims 1-8, characterized in that, including the following steps: S1: The system monitoring chip periodically sends a heartbeat signal to the main CPU (3) and waits for a response; S2: If a response and reply are received in a timely manner, it is determined that the main CPU (3) is fault-free; if no response is received or the response is abnormal, it is determined that the main CPU (3) is faulty. S3: When it is determined that the main CPU (3) is faulty, a switching mechanism is triggered to transfer control to the standby CPU (4). S4: After receiving the switching instruction, the standby CPU (4) immediately enters the working state. S5: Load the latest system status data to ensure seamless takeover of the control task.

10. The switching method of a switching device for a heat exchange station controller redundancy according to claim 9, characterized in that, The method further includes: The CPU transmits a signal to the main controller, and the main controller controls the electronic valve, the water pump frequency converter, and the sensor unit through the signal input / output unit, thereby realizing the control of the opening and closing of the electronic valve and the water pump. Moreover, the sensor unit transmits the received pressure, temperature, and flow signals back to the main controller, and the main controller transmits the data to the data exchange unit. The data exchange unit displays the data on the touch control screen (9) and simultaneously transmits it to the data center through the communication unit.

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