A rotation monitoring system for intermittent work control system

Abstract

The present invention discloses a rotation monitoring system for an intermittent working control system, comprising: a determination module, used for determining parameters to be monitored and / or subsystems to be monitored; a signal distribution module, used for distributing monitoring signals of the parameters to be monitored and / or subsystems to be monitored to the control system and a processing module indiscriminately; a processing module, used for storing the monitoring signals and issuing an early warning when the monitoring signals exceed preset limits, wherein the parameters to be monitored are specifically parameters necessary for the logical operation of the control system and safety parameters in the control system, and the subsystems to be monitored are specifically subsystems necessary for the logical operation of the control system and safety subsystems in the control system, thereby achieving accurate monitoring of important parameters in the intermittent working control system and reducing monitoring costs.

Description

Technical Field

[0001] The invention belongs to the technical field of system monitoring, and in particular relates to a rotation monitoring system for an intermittent work control system. Background Art

[0002] For control systems that work intermittently, there are parameters of different sizes and types inside them. Based on the importance of the parameters, some parameters need to be monitored, stored and analyzed for a long time. The conventional processing method requires the control system to work with power on for a long time to ensure that the required information can be collected for storage, analysis and processing. The defect of this working mode is that the control system that only needs intermittent work also needs to be powered on for a long time during non-working periods, which affects the service life of the entire system and has high safety and maintenance costs. There is also another processing method, which is to configure a large number of on-site direct-reading primary instruments during the construction process, and power off the control system during non-task periods. The parameters that need to be monitored rely on personnel to take turns to go to the site in shifts to read the display values ​​of the on-site primary instruments for manual transcription and reporting. However, the installation positions of the on-site primary instruments vary, which is not conducive to personnel observation, and the on-site environment may be dangerous, which will pose a danger to the staff.

[0003] Therefore, how to accurately monitor important parameters in a control system that works intermittently and reduce the monitoring cost is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The purpose of the present invention is to accurately monitor important parameters in an intermittent working control system, and proposes a rotation monitoring system for an intermittent working control system.

[0005] The technical solution of the present invention is: a rotation monitoring system for an intermittent work control system, comprising:

[0006] A determination module, used for determining the parameters to be monitored and / or the subsystems to be monitored;

[0007] A signal distribution module, used for distributing the monitoring signals of the parameters to be monitored and / or the subsystems to be monitored to the control system and the processing module without distinction;

[0008] The processing module is used to store the monitoring signal and issue an early warning when the monitoring signal exceeds a preset limit.

[0009] Furthermore, the parameters to be monitored are specifically parameters necessary for the logical operation of the control system and safety parameters in the control system, and the subsystems to be monitored are specifically subsystems necessary for the logical operation of the control system and safety subsystems in the control system.

[0010] Furthermore, the monitoring signal is specifically divided into an analog signal, a switch signal and a pulse signal.

[0011] Furthermore, the signal distribution module specifically includes a signal isolation distributor and a relay, the signal isolation distributor is used to distribute analog signals and pulse signals indiscriminately to the control system and processing module, and the relay is used to distribute switch signals indiscriminately to the control system and processing module.

[0012] Furthermore, the rotation monitoring system is independently powered.

[0013] Furthermore, the determination module is also used to classify the parameters to be monitored into levels based on the utilization rate of the parameters to be monitored, the communication mode and the main control requirements, and the levels include level one and level two. The monitoring signal of the level one parameter to be monitored is connected to the processing module and the control system, and the monitoring signal of the level two parameter to be monitored is only connected to the processing module.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a rotation monitoring system for an intermittent working control system, comprising: a determination module, used to determine parameters to be monitored and / or subsystems to be monitored; a signal distribution module, used to distribute monitoring signals of the parameters to be monitored and / or subsystems to be monitored to the control system and processing module indiscriminately; a processing module, used to store the monitoring signals and issue an early warning when the monitoring signals exceed preset limits, wherein the parameters to be monitored are specifically parameters necessary for the logical operation of the control system and safety parameters in the control system, and the subsystems to be monitored are specifically subsystems necessary for the logical operation of the control system and safety subsystems in the control system, thereby achieving accurate monitoring of important parameters in the intermittent working control system and reducing monitoring costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic structural diagram of a rotation monitoring system for an intermittent work control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] As described in the background technology, the existing technology cannot accurately monitor the important parameters in the control system of intermittent operation while reducing the monitoring cost. Taking the application scenario of the aerospace propellant support system as an example, the support system is a comprehensive system with a large volume, a wide variety of measurement and control types, complex measurement and control logic, and a high critical level. During the propellant filling mission with high support requirements, the main control support system needs to be fully switched in and operated in coordination according to the established measurement and control requirements to complete the core support tasks with complex logic and high precision requirements under the full support of the technical team. This working method is carried out intermittently in stages according to the test launch plan, and is not a long-term, uninterrupted operation mode. Because propellant is a substance with special properties such as combustion, explosion and toxicity, there are many subsystems and some key monitoring signals in the control support system. They are not only an integral part of the main control system, but also need to be monitored, stored, analyzed, and summarized and reported for a long time during the rotation work of non-main tasks. In response to this demand, in the past, a large number of on-site direct-reading primary instruments were configured during the design and construction of the process system. The main control system was powered off and shut down during non-mission periods, and important monitoring data relied on personnel to take turns to go to the site in shifts to read the display values ​​of the on-site primary instruments for manual transcription and reporting. This method has obvious disadvantages. The primary instruments are installed on-site, and the pipelines are complex and uneven, which is not conducive to personnel observation; the danger and toxicity of the propellant may cause personal injury, and on-site personnel need to wear protective equipment to work; manual transcription has the disadvantages of input errors, poor timeliness of summary statistics and analysis and judgment, and heavy workload. In order to overcome the aforementioned drawbacks, another working mode is to rely on the long-term startup of the entire main control system, and to add functional modules such as data storage, analysis, recording, summary and linkage to the main control system. The existing problem first lies in the long-term consumption of manpower and system investment. The long-term support force of professional and technical personnel during non-mission periods is limited, and more on-duty personnel do not have high system monitoring and maintenance capabilities. There is even the possibility of misoperation affecting the stability of the main control system or causing erroneous actions in the process system. The danger for such a large special combustion system is self-evident; the long-term power-on of a large number of electronic equipment in the control system increases the aging speed of the system control components and affects the service life of the control system; a huge amount of on-duty monitoring data is accumulated in the main control system, occupying system resources, increasing the operating load of the main control system, affecting the operating speed of the main control system, and bringing certain hidden dangers to the operating stability of the main control system during the mission, etc.

[0019] Therefore, the present application proposes a rotation monitoring system for an intermittent work control system, such as Figure 1 The figure is a schematic diagram of the structure of a rotation monitoring system for an intermittent work control system proposed in an embodiment of the present application, including:

[0020] A determination module, used for determining the parameters to be monitored and / or the subsystems to be monitored;

[0021] A signal distribution module, used for distributing the monitoring signals of the parameters to be monitored and / or the subsystems to be monitored to the control system and the processing module without distinction;

[0022] The processing module is used to store the monitoring signal and issue an early warning when the monitoring signal exceeds a preset limit.

[0023] In an embodiment of the present application, the parameters to be monitored are specifically parameters necessary for the logical operation of the control system and safety parameters in the control system, and the subsystems to be monitored are specifically subsystems necessary for the logical operation of the control system and safety subsystems in the control system.

[0024] Specifically, in order to solve the problem of rotation of important information during non-task periods in intermittent control systems, we must first define which objects are in need of rotation. These research objects have such a significant characteristic: they are an integral and important part of the main control system based on the intermittent working system, and are monitoring parameters or subsystems necessary for the logical operation of the main control system. At the same time, due to their importance in the system, there is a need for dynamic long-term monitoring. Such parameters account for an absolute proportion for the purpose of monitoring, and there are also a small number of parameters that require interlocking drive control. Grasping these characteristics, we analyze and identify the measurement and control objects and subsystems of the main control system of the intermittent working system according to the process measurement and control requirements, and sort out and define and identify the parameters to be monitored that have rotation requirements. Through the analysis and analogy of similar systems, on this basis, the types of parameters to be measured and controlled that need to be monitored for a long time in the control system are analyzed. The monitoring signal types corresponding to the parameters to be measured and controlled are mainly analog signals, switch signals, and pulse signals, among which analog signals account for a relatively large proportion. For example, the tank level, temperature, pressure, valve opening and closing status, leakage monitoring signals, etc. of the propellant support system. For conventional propellants with relatively stable properties, the main monitoring is the tank level, temperature, and pressure. For cryogenic propellants, in addition to the monitoring requirements, there is also a requirement to open the valve according to the main pressure to ensure safety; there are also some functional blocks or subsystems in the intermittent control system, such as the decontamination function control module, etc. The functional blocks that need to be monitored mainly output data in RS485, modbus, and Ethernet communication modes, and the functional requirements of these functional blocks are relatively large. The definition and selection of the monitoring signals of the rotation system and the analysis of the signal types are the research basis for the construction of the rotation system.

[0025] In the embodiment of the present application, the monitoring signal is specifically divided into an analog signal, a switch signal and a pulse signal.

[0026] In an embodiment of the present application, the signal distribution module specifically includes a signal isolation distributor and a relay. The signal isolation distributor is used to distribute analog signals and pulse signals indiscriminately to the control system and processing module, and the relay is used to distribute switch signals indiscriminately to the control system and processing module.

[0027] Specifically, based on the analysis and research of signal types, the rotating monitoring system needs to solve the problem of distributing and sending the same-source signals shared by the intermittent master control system and the rotating system. The key point to solving this problem is to enable the data output by the same signal source to be distributed and sent to the rotating monitoring system and the intermittent master control system without distinction. Moreover, the process of the rotating monitoring system acquiring signals cannot affect the acquisition of the main control system signals and the main control system's requirements for signal correctness, stability, and safety. That is, the distribution of same-source signals must solve the identity and the accuracy of system safety and stability. The main control system is also the intermittent working control system in this application. Based on the judgment of the signal category of the rotating system and combined with the above-mentioned requirements, this method studies and determines the solution to the problem of acquisition, distribution and sending of analog signals and pulse signals from the same source. By customizing a one-to-two or one-to-three signal isolation distributor, the same-source signal is distributed to the main control system and the rotating monitoring system without distinction, solving the integrity, uniformity, and independent operation requirements of the two monitoring systems for signal acquisition. The processing method of three-wire analog and pulse signals is similar. The same source switch quantity signal is distributed and delivered by means of relay isolation distribution, ensuring that the main control system and the rotation system can obtain the same signal at the same time. Another optional signal acquisition solution is to find a solution from the process system. In the part where the process equipment installation conditions allow, two calibrated sensors with the same performance parameters can be installed at the same monitoring point to give the signal to the main control and rotation systems respectively, or a sensor with a 2-way output transmission function can be customized to achieve the same source dual-way output and solve the signal dual-system distribution problem. The above solutions are all feasible and are determined comprehensively based on the specific system implementation capability, reliability, and economy.

[0028] In an embodiment of the present application, the rotation monitoring system is independently powered.

[0029] Specifically, power distribution guarantee is the basic guarantee of the mainstream control system. The generation of homologous signals and the power distribution of the rotating system are an important part of this method. The solution to the power distribution problem must first be clearly positioned. The key level of the main control system is higher than that of the rotating monitoring system. The main control system adopts an intermittent working system, and the rotating monitoring system adopts a long-term uninterrupted working system. It is necessary to comprehensively consider the generation of homologous signals and the power distribution configuration of the rotating system, which are also necessary components of the two systems. Whether the homologous signal is isolated and distributed by a signal isolation distributor or by a relay, it requires basic support from power distribution. This solution uses an independent power distribution system to provide power for the homologous signal acquisition and distribution system alone, and the power distribution function supports installation in the rotating system control cabinet. The key point of the solution is that the power distribution, which is indispensable for the acquisition and distribution of homologous signals, needs to be separated from the main control system in intermittent operation to solve the problem that the intermittent main control system cannot obtain the data collection of the required signals when it is not powered on during non-working hours. This solution has a key point. The signal isolation distributor and relay used for the distribution of homologous signals must be configured in the rotation system of the uninterrupted working system. In addition, based on the high criticality of these signals, they are the necessary signal source of the main control system. In order to ensure the stable power distribution of the isolation signal distributor and relay, the UPS+dual power supply redundant backup mode is adopted. It can even be installed in the rotation monitoring system and directly draw power from the UPS independently of the rotation system.

[0030] In an embodiment of the present application, the determination module is also used to classify the parameters to be monitored into levels based on the usage rate of the parameters to be monitored, the communication mode and the main control requirements, and the levels include level one and level two. The monitoring signal of the level one parameter to be monitored is connected to the processing module and the control system, and the monitoring signal of the level two parameter to be monitored is only connected to the processing module.

[0031] Specifically, the functional modules with high usage rates include some similar to disinfection, fire protection, strong exhaust fans, leakage monitoring, etc. These monitoring modules with independent functions are mostly connected to the measurement and control system using communication modes such as RS485, modbus, and Ethernet. This part is based on the uniqueness of the main control system in the early stage, and is all configured in the main control system. In the process of building the rotation monitoring system, in principle, the functional modules and subsystems that do not require main control and long-term monitoring are assigned to the rotation system, and the signals of functional blocks and subsystems that have main control requirements are processed separately. If the same or heterogeneous signal communication cards can be added to the functional modules, communication receiving cards can be added to the main control and rotation systems respectively to access the information source in communication mode. For functional modules with weaker critical levels, they can also only be connected to the rotation system and transferred to the main control through the rotation system.

[0032] The intermittent main control system is dominant, and the rotation is auxiliary support. The main control system fully assumes the main control functions of the entire system. The main control mostly uses controllers with redundant functions suitable for large-scale control systems. The main control program is carried out as much as possible around the main functions and adopts an intermittent working system. The rotation monitoring system adopts a compact controller suitable for small and medium-sized scales, works uninterruptedly for a long time, and assumes the functions of monitoring, storage, analysis, summary and reporting of key system parameters and systems. Its responsibilities focus on monitoring, supplemented by over-limit alarms, interlocking drives and other functions, sharing the storage and data processing functions of the main control system, and reducing the data processing pressure of the main control program. It is an auxiliary system of the main control system. At the same time, according to special usage requirements, the rotation system can be configured as a substation of the main control system. It can not only send key data to the main control system through the rotation system, but also assume part of the main control functions and play a backup role.

[0033] In this application, the dual systems are relatively independent, and sufficient reliability design ensures that the rotation system does not affect the integrity and reliability of the main control. The independent rotation system does not require high technical capabilities of the on-duty personnel, has its own alarm prompt function, and is supplemented by interlocking drive, which is easy to maintain and improves the system monitoring capability.

[0034] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A rotation monitoring system for an intermittent work control system, characterized in that: The system comprises: A determination module, used for determining the parameters to be monitored and / or the subsystems to be monitored; A signal distribution module, used for distributing the monitoring signals of the parameters to be monitored and / or the subsystems to be monitored to the control system and the processing module without distinction; A processing module, used for storing the monitoring signal and issuing an early warning when the monitoring signal exceeds a preset limit; The parameters to be monitored are specifically parameters necessary for the logical operation of the control system and safety parameters in the control system, and the subsystems to be monitored are specifically subsystems necessary for the logical operation of the control system and safety subsystems in the control system; The signal distribution module specifically includes a signal isolation distributor and a relay. The signal isolation distributor is used to distribute analog signals and pulse signals indiscriminately to the control system and processing module, and the relay is used to distribute switch signals indiscriminately to the control system and processing module.

2. The rotation monitoring system for an intermittent work control system according to claim 1, characterized in that: The monitoring signal is specifically divided into analog signal, switch signal and pulse signal.

3. The rotation monitoring system for an intermittent work control system according to claim 1, characterized in that: The rotating monitoring system is independently powered.

4. The rotation monitoring system for an intermittent work control system according to claim 1, characterized in that: The determination module is also used to classify the parameters to be monitored into levels based on the usage rate of the parameters to be monitored, the communication mode and the main control needs. The levels include level one and level two. The monitoring signals of the level one parameters to be monitored are connected to the processing module and the control system, and the monitoring signals of the level two parameters to be monitored are only connected to the processing module.

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